CN107925534A

CN107925534A - A kind of transmission method of reference signal, user equipment, base station and system

Info

Publication number: CN107925534A
Application number: CN201580082795.8A
Authority: CN
Inventors: 吴作敏; 马莎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2018-04-17
Also published as: WO2017075809A1

Abstract

The present invention provides a kind of transmission method of reference signal, user equipment, base station and system.This method may include that base station configures the first CRS for resource block, and the antenna port of the first CRS is cell-specific antenna port, and resource block is used to carry the information transmitted between base station and UE, and information includes data portion and reference signal part；For resource block configuration supplement CRS, the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different for base station；Transmission resource of base station block, the reference signal part of the information of resource block carrying include the first CRS and supplement CRS.Under conditions of short TTI transmission, since the first CRS layouts can only be demodulated so as to which demodulation performance is poor for some data portions on resource block by the extrapolation of CRS, the embodiment of the present invention can be demodulated the symbol that this kind of extrapolation by CRS is demodulated by being laid out supplement CRS UE in resource block by supplementing CRS, so as to improve demodulation performance.

Description

A kind of transmission method of reference signal, user equipment, base station and system

Technical field

The present invention relates to LTE communication field more particularly to a kind of transmission method of reference signal, user equipment, base station and systems.

Background technique

Time delay is the KPI Key Performance Indicator (Key Performance Indicator, KPI) of network in mobile network, directly affects the experience of user.The new business (such as car networking business) of emergence also proposes increasingly higher demands to time delay.For example, demand of some business end to end to time delay is as follows:

It is less than 25ms that event in movement interactive class game, which triggers the demand to time delay,；Demand of the communication of (Car-to-car) to time delay is less than 30ms between the automobile and automobile in automatic Pilot；Demand of the turnaround time (Round-Trip Time, RTT) to time delay in remote control is less than 50ms；Demand in smart grid power automation protection to time delay is less than 8ms；Demand of the call setup to time delay is less than 300ms in public safety, and demand of end-to-end (End To End, E2E) the media file transmission to time delay is less than 150ms.

It also is being continually striving to reduce time delay in the evolution process of mobile communication standard, it eats dishes without rice or wine technically to the scheduling interval of the most apparent physical layer of time delay influence in wideband code division multiple access (Wideband Code Division Multiple Access, it WCDMA) is 10ms, (High-Speed Packet Access is accessed to high-speed packet, HSPA 2ms) is shortened to, to long term evolution (Long Term Evolution, LTE) or long term evolution enhances (LTE Advanced, LTE-A Transmission Time Interval (Transmission Time Interval), TTI 1ms) is shortened to.The business demand of small time delay causes LTE physical layer to need to introduce short transmission time interval Short-TTI frame structure, further shortens scheduling interval, for example, TTI can shorten to 1 time-domain symbol to 0.5ms from 1ms.Wherein, the above-mentioned time-domain symbol referred to can be an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol in LTE system.

It include 14 time-domain symbols in the duration (1ms) of 1 subframe, if base station downlink time-domain symbol 3 to user device transmissions data, user equipment (User Equipment, UE it) can be fed back in the time-domain symbol 7 of uplink, base station can receive feedback in time-domain symbol 11, issue at this time from base station Data are to when a length of 8 time-domain symbols for receiving feedback, and about 0.57ms is transmitted relative to 1ms TTI, and time delay greatly shortens.

However, if the length of short TTI only has 1 to 2 time-domain symbol, when using the transmission mode of CRS demodulation, in order to reduce time delay, short TTI transmission can only carry out channel estimation using the CRS occurred before scheduled symbol, for some time-domain symbols, such as time-domain symbol 3 and 6 etc., the channel information in the time-domain symbol can only be obtained by the extrapolation of CRS, to not be able to satisfy the demodulation demand under high speed, high order modulation scene.

Summary of the invention

The embodiment of the invention provides a kind of transmission method of reference signal, user equipment, base station and systems, enable to performance bad time-domain symbol when some progress channel estimations using the first CRS that can improve precision of channel estimation by supplement CRS, so as to improve the demodulation performance of short TTI transmission under high speed or high order modulation scene.

In view of this, first aspect of the embodiment of the present invention provides a kind of transmission method of reference signal, can include: first, base station is that resource block configures the first CRS, the antenna port of first CRS is cell-specific antenna port, for the resource block for carrying the information transmitted between base station and UE, which includes data portion and reference signal part；Wherein, the antenna port of the first CRS refer to transmission the first CRS antenna port, if such as transmission the first CRS antenna port be port 0 and port 1, then for base station, the first CRS is issued by port 0 and port 1, for UE, the first CRS is received by port 0 and port 1.

Secondly, base station is that resource block is reconfigured supplement CRS, the antenna port of the antenna port and the first CRS that supplement CRS is identical or different antenna port；For resource block, the layout (i.e. the layout of the first CRS) of CRS is although can demodulate the data portion on resource block in the prior art, but due to using short TTI mode, when the length of especially short TTI only has one to two symbols, in order to reduce the influence of time delay, for the data on some resource units on resource block, such as symbol 3 and symbol 10 can only obtain the channel information on the symbol by the extrapolation of CRS, and due to may be three symbols or more with a distance from the symbol comprising CRS nearest from symbol 3, in high speed, demodulation performance under high order modulation scene has an impact, therefore, it can be demodulated by being laid out the symbol that supplement CRS enables UE to demodulate this kind of extrapolation by CRS in resource block by supplementing CRS.

Finally, transmission resource of base station block.The reference signal part of the information of resource block carrying includes the first CRS and supplement CRS, UE is after receiving the resource block, the first CRS and supplement CRS demodulation that the data portion in information carried on the resource block can be carried on the resource block, to improve demodulation performance.

With reference to first aspect, in the first possible implementation of the first aspect, supplementing CRS may include the 2nd CRS, i.e., in the first insufficient situation of CRS, can supplement in resource block with the 2nd base station CRS with same antenna port of the first CRS is that resource block configuration supplement CRS includes:

Base station configures the 2nd CRS in resource block for the antenna port of at least one the first CRS.Such as the first the antenna port of CRS have port 0 and port 1, when configuring two CRS, can only be configured on port 0, without considering port 1, or only be configured on port 1 without considering port 0, then or configured on two ports.

As can be seen that supplement when as to the first CRS deficiency；Under this situation, only need the antenna port of the first CRS as the transmission port of the first CRS and the 2nd CRS of transmission, be typically due to the first CRS have fixed form be arranged in resource block, it is only necessary to supplement the 2nd a small amount of CRS can be realized needed on resource block the data demodulated by CRS extrapolation can combine the first CRS and the 2nd CRS demodulation.

The possible implementation of with reference to first aspect the first, in the second possible implementation of the first aspect, supplementing CRS further includes the 3rd CRS, and supplement CRS antenna port is the 3rd CRS antenna port, and the 3rd CRS antenna port is different antenna ports from the antenna port of the first CRS.It is supplemented in resource block after the 2nd CRS, in some cases, UE has the more antenna ports of antenna port than the first CRS, supplement CRS may include the 3rd CRS at this time, and the 3rd CRS is to can be the proprietary reference signal of UE, or can be the proprietary reference signal of cell, or it can be some group in cell, such as the reference signal that all UE for supporting short TTI can be identified, the 3rd CRS is transmitted by the antenna port different from the first CRS, to meet the demodulation of such UE.

Base station is the logical supplement CRS of resource block configuration further include:

Base station determines the time domain length and/or frequency domain length of resource block；

Base station determines the 3rd CRS antenna port of resource block；

Base station is that at least one the 3rd CRS antenna port configures the 3rd CRS according to time domain length and/or frequency domain length in resource block.

Such 3rd CRS needs the time domain length and/or frequency domain in view of resource block when configuring in resource block Length needs to know that the time domain length of resource block is several time-domain symbols on earth, frequency domain length is how many a PRB, and each PRB includes 12 subcarriers, and the antenna port for then corresponding to the 3rd CRS is configured.

With reference to first aspect, in a third possible implementation of the first aspect, supplement CRS includes the 3rd CRS, and supplement CRS antenna port is the 3rd CRS antenna port, and the 3rd CRS antenna port is different antenna ports from the antenna port of the first CRS；

Base station configures for resource block

Base station determines that the CRS antenna port of resource block, CRS antenna port include the antenna port and the 3rd CRS antenna port of the first CRS；

Base station configures the 3rd CRS in resource block at least one the 3rd CRS antenna port.The reason of specific 3rd CRS is needed to configure and configuration requirement can be found in second of possible implementation of first aspect.

The third possible implementation of the possible implementation of second with reference to first aspect or first aspect, in a fourth possible implementation of the first aspect, base station determines in the time domain length and/or frequency domain length of resource block that base station determines that the mode of time domain length at least has following two；

The time domain length that resource block is determined one is base station is M time-domain symbol, and M is the integer not less than 1 and no more than 14；The length of resource block is divided according to the number of time-domain symbol.Another kind is that base station determines that the time domain length of resource block is N number of subframe, and N is the integer not less than 1 and no more than 10；The length of resource block is divided according to the integral multiple of subframe lengths.

Base station determines that the frequency domain length wise of resource block at least has following manner:

Base station determines that the frequency domain length of resource block is P PRB or RBG or RE or REG, and P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.That is the frequency domain length integral multiple that can be PRB, the integral multiple of RBG, the integral multiple of RE or the integral multiple of REG, specific divide can be defined in advance.

The 4th kind of possible implementation with reference to first aspect, in the fifth possible implementation of the first aspect, base station determines that the time domain length of resource block is M time-domain symbol, when M is the integer not less than 1 and no more than 3, base station configures the 3rd CRS in resource block at least one the 3rd CRS antenna port, comprising:

1 RE is configured in each PRB of the base station in resource block for the 3rd CRS antenna port of each of at least one the 3rd CRS antenna port；

Or,

When M is the integer not less than 4 and no more than 7, base station configures the 3rd CRS in resource block at least one the 3rd CRS antenna port, comprising:

2 RE are configured in each PRB of the base station in resource block for the 3rd CRS antenna port of each of at least one the 3rd CRS antenna port；

Or,

When M is the integer not less than 8 and no more than 14, base station configures the 3rd CRS in resource block at least one the 3rd CRS antenna port, comprising:

Antenna port in each PRB of the base station in resource block for the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 4 RE.

As can be seen that, according to the difference of time domain length, being the RE that the antenna port for being the 3rd CRS of each of the antenna port of at least one the 3rd CRS in each PRB configures different number in the time domain length using the number of time-domain symbol as resource block.

The 4th kind of possible implementation of the third possible implementation or first aspect of the possible implementation of second with reference to first aspect or first aspect or the 5th kind of possible implementation of first aspect, in the sixth possible implementation of the first aspect, method further include:

Base station sends the antenna port number and/or power contorl parameters of the 3rd CRS by signaling, and signaling is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling.

It should be noted that, the antenna port number of the 3rd CRS sent and the power contorl parameters of the 3rd CRS can be sent by the signaling of same type or different types of signaling, according to same type signaling send when, the antenna port number of the 3rd CRS and the power contorl parameters of the 3rd CRS can be indicated respectively with independent signaling, can also simultaneously include the antenna port number of the 3rd CRS and the power contorl parameters of the 3rd CRS in same signaling.

As can be seen that multitude of different ways, e.g. radio resource control RRC signaling or media access control MAC signaling or physical layer signaling etc. can be used in signaling.

Second aspect of the embodiment of the present invention also provides a kind of transmission method of reference signal, can include: base station determines the time domain length and/or frequency domain length of resource block, for resource block for carrying the information transmitted between base station and UE, the information includes data portion and reference signal part；

Base station is the first DM-RS that resource block configuration is transmitted by the first DM-RS antenna port, the ginseng Examining signal section includes the first DM-RS；

The resource block is transmitted in base station, and the reference signal part of the information carried on the resource block includes the first DM-RS.

The first DM-RS of configuration is carried out in this way, can satisfy the transmission of progress DMRS in the case of short TTI transmission.

In conjunction with second aspect, in the first possible implementation of the second aspect, base station is determined in the time domain length and/or frequency domain length of resource block, and base station determines that the time domain length of resource block includes:

Base station determines that the time domain length of resource block is M orthogonal frequency division multiplexing time-domain symbol, and M is the integer not less than 1 and no more than 14；

And/or

Base station determines that the time domain length of resource block is N number of subframe, and N is the integer not less than 1 and no more than 10；

Base station determines that the frequency domain length of resource block includes:

Base station determines that the frequency domain length of resource block is P PRB or RBG or RE or REG, and P is not less than 1 and to be not more than the integer of Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.That is the frequency domain length integral multiple that can be PRB, the integral multiple of RBG, the integral multiple of RE or the integral multiple of REG, specific divide can be defined in advance.

Base station determines that the time domain length of resource block and frequency domain length are similar with the third possible implementation of first aspect.

In conjunction with the first possible implementation of second aspect, in a second possible implementation of the second aspect,

The base station is that the resource block configures the first DM-RS, comprising:

Antenna port in each PRB of the base station in the resource block for the first DM-RS of each of the antenna port of at least one the first DM-RS configures Y RE, wherein, Y is the at most supported antenna port number of the first DM-RS, first DM-RS of different antennae port uses different reference signal sequences, and the first DM-RS of different antennae port occupies identical running time-frequency resource.In conjunction with the possible implementation of the first of second aspect or second aspect or second of possible implementation of second aspect, in the third possible implementation of the second aspect, method further include:

Base station is that resource block configures the first CRS, and the antenna port of the first CRS is cell-specific antenna end Mouthful, which includes the first CRS；

The resource block is transmitted in base station, and the reference signal part of the resource block includes that the first DM-RS includes:

Transmission resource of base station block, the reference signal part of the resource block include the first DM-RS and the first CRS.

As can be seen that in some cases, the first DM-RS and the first CRS coexist, i.e., for the data in a resource block, the first DM-RS and the first CRS are needed to be demodulated.

In conjunction with the third possible implementation of second aspect, in the fourth possible implementation of the second aspect, method further include:

Base station is that resource block configures the 2nd CRS according to the antenna port of at least one the first CRS；

Transmission resource of base station block, the reference signal part of the resource block include that the first DM-RS and the first CRS includes:

Transmission resource of base station block, the reference signal part of the resource block include the first DM-RS, the first CRS and the 2nd CRS.

In some cases, the layout of first CRS causes the data demodulation performance that should be demodulated by the first CRS on some resource blocks bad, therefore the 2nd CRS for needing additional supplement to transmit using the antenna port of the first CRS, the port number of 2nd CRS can be identical as the port number of the first CRS, can also be less than the port number of the first CRS.

The third aspect of the embodiment of the present invention also provides a kind of transmission method of reference signal, this method can include: UE receives the resource block of base station transmission, wherein, resource block is for carrying the information transmitted between base station and UE, information includes data portion and reference signal part, reference signal part includes the first CRS and supplements CRS, and the antenna port of the first CRS is cell-specific antenna port, and the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different；

UE demodulates the data portion of the information carried on resource block according to the first CRS and supplement CRS.

As can be seen that the resource block for carrying the first CRS and supplementing CRS that the base station for corresponding to first aspect configures, UE can demodulate the data portion of the information on resource block by the first CRS and supplement CRS after receiving the resource block.

In conjunction with the third aspect, in the first possible implementation of the third aspect, supplementing CRS includes the 2nd CRS and/or the 3rd CRS, and the antenna port of the 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS.

It can be seen that, supplementing CRS tool, there are three types of different situations, that is supplement CRS is the 2nd CRS, the 3rd CRS or the 2nd CRS and the 3rd CRS, in these three situations, 2nd CRS is similar with the first CRS, the data portion of corresponding information can be demodulated, the 3rd CRS then needs the first CRS of joint that can just demodulate the data portion of corresponding information.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, in the second possible implementation of the third aspect, method further includes,

UE determines the time domain length and/or frequency domain length of resource block, wherein UE determines that the time domain length of resource block includes:

UE determines that the time domain length of resource block is M time-domain symbol, and M is the integer not less than 1 and no more than 14；

And/or

UE determines that the frequency domain length of resource block includes:

UE determines that the frequency domain length of resource block is P PRB or RBG or RE or REG, and P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.

As can be seen that the first possible implementation of the 4th kind of possible implementation and second aspect of the determination of the time domain length and determination of frequency domain length and first aspect of resource block is similar.

In conjunction with the first possible implementation of the third aspect or second of possible implementation of the third aspect, in the third possible implementation of the third aspect, method further include:

It is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling that UE, which receives the port information for the antenna port for determining the 3rd CRS that base station is sent and/or the signaling of power contorl parameters, signaling,；

UE determines the antenna port and/or power contorl parameters of the 3rd CRS according to signaling.

The port information and/or power contorl parameters that UE knows the antenna port of the 3rd CRS by receiving the signaling of base station, and the data portion of the information in resource block can be demodulated using these port informations and power contorl parameters.

Fourth aspect present invention also provides a kind of transmission method of reference signal, this method can include:

UE receives the resource block of base station transmission, wherein, for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part, reference signal part includes the first DM-RS, and the antenna port of the first DM-RS is UE special demodulating antenna port；

UE demodulates the data portion of the information carried on resource block according to the first DM-RS.

As can be seen that the resource block for carrying the first DM-RS that the base station for corresponding to second aspect configures, UE can demodulate the data portion of the information on resource block by the first DM-RS after receiving the resource block.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, method further includes,

And/or

The base station determines that the time domain length of resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

UE determines that the frequency domain length of resource block includes:

As can be seen that the determination and the determination of frequency domain length of the time domain length of resource block and second of possible implementation of the third aspect are similar.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, in the second possible implementation of the fourth aspect, method further include:

Reference signal part further includes the first CRS, also carries the first CRS on resource block；

UE carries out demodulation according to data portion of the first DM-RS to the information carried on resource block

UE demodulates the data portion of the information carried on resource block according to the first DM-RS and the first CRS.

As can be seen that the resource block for carrying the first DM-RS and the first CRS of the third possible implementation configuration of corresponding second aspect, UE is by the first DM-RS and the first CRS to the resource block On the data portion of information demodulated.

In conjunction with the first possible implementation of fourth aspect or second of possible implementation of fourth aspect, in the third possible implementation of the fourth aspect, method further include:

Reference signal part further includes the first CRS and the 2nd CRS, also carries the first CRS and the 2nd CRS on resource block,；

UE carries out demodulation to the information carried on resource block according to the first DM-RS

UE demodulates the data portion of the information carried on resource block according to the first DM-RS, the first CRS and the 2nd CRS.

It can be seen that, the resource block for carrying the first DM-RS, the first CRS and the 2nd CRS of the possible implementation configuration of the 4th kind of corresponding second aspect, UE demodulate the data portion of the information on the resource block by the first DM-RS, the first CRS and the 2nd CRS.

The 5th aspect of the embodiment of the present invention also provides a kind of base station, it may include:

First configuration module, for configuring the first CRS for resource block, the antenna port of the first CRS is cell-specific antenna port, and for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

First configuration module is also used to configure supplement CRS for resource block, and the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different；

First transceiver module, is used for transmission resource block, and the reference signal part of the information of resource block carrying includes the first CRS and supplement CRS.

It is understood that the base station can realize the transmission method for the reference signal that first aspect provides.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, supplement CRS includes the 2nd CRS, and the antenna port for supplementing CRS is identical as the antenna port of the first CRS；

First configuration module is specifically used for:

The 2nd CRS is configured in resource block for the antenna port of at least one the first CRS.

It is understood that method involved in the first the possible implementation of the first configuration module for realizing first aspect in the implementation.

In conjunction with the first possible implementation of the 5th aspect, in second of possible implementation of the 5th aspect, supplementing CRS further includes the 3rd CRS, and the antenna port for supplementing CRS is the antenna port of the 3rd CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS；

First configuration module is specifically used for:

Determine the time domain length and/or frequency domain length of resource block；

Determine the antenna port of the 3rd CRS of resource block；

The 3rd CRS is configured according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in resource block.

It is understood that method involved in second of possible implementation of first aspect may be implemented in the first configuration module in the implementation.

In conjunction with the 5th aspect, in the third possible implementation of the 5th aspect, supplement CRS includes the 3rd CRS, and the antenna port for supplementing CRS is the antenna port of the 3rd CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS；

First configuration module is specifically used for:

Determine the antenna port of the 3rd CRS of resource block；

It is understood that method involved in the third possible implementation of first aspect may be implemented in the first configuration module in the implementation.

In conjunction with second of possible implementation of the 5th aspect or the third possible implementation of the 5th aspect, in the 4th kind of possible implementation of the 5th aspect, the first configuration module is specifically used for:

The time domain length for determining resource block is M time-domain symbol, and M is the integer not less than 1 and no more than 14；

And/or

The time domain length for determining resource block is N number of subframe, and N is the integer not less than 1 and no more than 10；

First configuration module also particularly useful for:

The frequency domain length for determining resource block is P PRB or RBG or RE or REG, and P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.

It is understood that method involved in the 4th kind of possible implementation of first aspect may be implemented in the first configuration module in the implementation.

In conjunction with the 4th kind of possible implementation of the 5th aspect, in the 5th kind of possible implementation of the 5th aspect, the time domain length of resource block is M time-domain symbol, and the first configuration module is specifically used for:

When M is the integer not less than 1 and no more than 3, the antenna port in each PRB in resource block for the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 1 RE；

Or,

When M is the integer not less than 4 and no more than 7, the antenna port in each PRB in resource block for the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 2 RE；

Or,

When M is the integer not less than 8 and no more than 14, the antenna port in each PRB in resource block for the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 4 RE.

It is understood that method involved in the 5th kind of possible implementation of first aspect may be implemented in the first configuration module in the implementation.

In conjunction with second of possible implementation of the 5th aspect or the 5th kind of possible implementation of the 4th kind of possible implementation or the 5th aspect of the third possible implementation of the 5th aspect or the 5th aspect, in the 6th kind of possible implementation of the 5th aspect, the first transceiver module is also used to:

The port information and/or power contorl parameters for determining the antenna port of the 3rd CRS are sent by signaling, signaling is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling.

It is understood that method involved in the 6th kind of possible implementation of first aspect may be implemented in the first transceiver module in the implementation.

The 6th aspect of the embodiment of the present invention also provides a kind of base station, it may include:

Second configuration module, for determining the time domain length and/or frequency domain length of resource block, for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

Second configuration module is also used to configure the first DM-RS for resource block, and the antenna port of the first DM-RS is UE special demodulating antenna port；

Second transceiver module, is used for transmission resource block, and the reference signal part of the information of resource block carrying includes the first DM-RS.

It is understood that the transmission method of the reference signal of second aspect offer may be implemented in the base station.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the second configuration module tool Body is used for:

And/or

Second configuration module also particularly useful for:

It is understood that method involved in the first possible implementation of second aspect may be implemented in second configuration module.

In conjunction with the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect, the second configuration module is specifically used for:

Antenna port in each PRB in resource block for the first DM-RS of each of the antenna port of at least one the first DM-RS configures Y RE, wherein, Y is the at most supported antenna port number of the first DM-RS, first DM-RS of different antennae port uses different reference signal sequences, and the first DM-RS of different antennae port occupies identical running time-frequency resource.

It is understood that method involved in second of possible implementation of second aspect may be implemented in second configuration module.

In conjunction with second of possible implementation of the first possible implementation or the 6th aspect of the 6th aspect or the 6th aspect, in the third possible implementation of the 6th aspect, the second configuration module is also used to:

The first CRS is configured for resource block, the antenna port of the first CRS is cell-specific antenna port；

Second transceiver module is specifically used for:

Transmission resource block, the reference signal part of resource block include the first DM-RS and the first CRS.

It is understood that method involved in the third possible implementation of second aspect may be implemented in second configuration module.

In conjunction with the third possible implementation of the 6th aspect, in the 4th kind of possible implementation of the 6th aspect, the second configuration module is also used to:

It is that resource block configures the 2nd CRS according to the antenna port of at least one the first CRS；

Second transceiver module is specifically used for:

Transmission resource block, the reference signal part of resource block include the first DM-RS, the first CRS and the 2nd CRS.

It is understood that method involved in the 4th kind of possible implementation of second aspect may be implemented in second configuration module.

Seventh aspect present invention also provides a kind of user equipment, can include: third transceiver module, for receiving the resource block for carrying the first CRS and supplementing CRS of base station transmission, wherein, resource block includes data portion and reference signal part for carrying the information transmitted between base station and UE, information, and reference signal part includes the first CRS and supplement CRS, the antenna port of first CRS is cell-specific antenna port, and the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different；

First demodulation module, for being demodulated according to the first CRS and supplement CRS to the data portion of the information carried on resource block.

It is understood that the transmission method of the reference signal of the third aspect may be implemented in the user equipment.

In conjunction with the 7th aspect, in the first possible implementation of the 7th aspect, supplementing CRS includes the 2nd CRS and/or the 3rd CRS, and the antenna port of the 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS.

In conjunction with the first possible implementation of the 7th aspect or the 7th aspect, in second of possible implementation of the 7th aspect, user equipment further include:

First determining module, for determining that the time domain length of resource block is M time-domain symbol, M is the integer not less than 1 and no more than 14；

And/or

For determining that the time domain length of resource block is N number of subframe, N is the integer not less than 1 and no more than 10；

First determining module is also used to:

It is understood that first determining module can realize second of possible implementation of the third aspect Involved in method.

In conjunction with the first possible implementation of the 7th aspect or second of possible implementation of the 7th aspect, in the third possible implementation of the 7th aspect, third transceiver module is also used to:

Receiving the port information for the antenna port for determining the 3rd CRS that base station is sent and/or the signaling of power contorl parameters, signaling is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling；

First determining module is also used to:

The antenna port and/or power contorl parameters of the 3rd CRS are determined according to signaling.

It is understood that method involved in the third possible implementation of the third aspect may be implemented in the third transceiver module and the first determining module in the implementation.

Eighth aspect present invention also provides a kind of user equipment, can include: the 4th transceiver module, for receiving the resource block of base station transmission, wherein, resource block is for carrying the information transmitted between base station and UE, information includes data portion and reference signal part, and reference signal part includes the first DM-RS, and the antenna port of the first DM-RS is UE special demodulating antenna port；

Second demodulation module, for being demodulated according to the first DM-RS to the data portion of the information carried on resource block.

It is understood that the transmission method of the reference signal of fourth aspect may be implemented in the user equipment.

In conjunction with eighth aspect, in the first possible implementation of eighth aspect, user equipment further include:

Second determining module, for determining that the time domain length of resource block is M time-domain symbol, M is the integer not less than 1 and no more than 14；

And/or

Second determining module is also used to:

It is understood that method involved in the first possible implementation of fourth aspect may be implemented in the second determining module in the implementation.

In conjunction with the possible implementation of the first of eighth aspect or eighth aspect, in second of possible implementation of eighth aspect, reference signal part further includes the first CRS, also carries the first CRS on resource block；

Second demodulation module is specifically used for:

The data portion of the information carried on resource block is demodulated according to the first DM-RS and the first CRS.

It is understood that method involved in second of possible implementation of fourth aspect may be implemented in the second demodulation module in the implementation.

In conjunction with the possible implementation of the first of eighth aspect or eighth aspect, in second of possible implementation of eighth aspect, reference signal part further includes the first CRS and the 2nd CRS, also carries the first CRS and the 2nd CRS on resource block；

Second demodulation module is specifically used for:

The data portion of the information carried on resource block is demodulated according to the first DM-RS, the first CRS and the 2nd CRS.

It is understood that method involved in the third possible implementation of fourth aspect may be implemented in the second demodulation module in the implementation.

Ninth aspect present invention also provides a kind of communication system, it may include:

Base station, for configuring the first CRS for resource block, the antenna port of the first CRS is cell-specific antenna port, and for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

It is also used to configure supplement CRS for resource block, the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different；

It is also used to transmission resource block, the reference signal part of the information of resource block includes the first CRS and supplement CRS；

UE, for receiving the resource block of base station transmission；

It is also used to demodulate the data portion of the information carried on resource block according to the first CRS and supplement CRS.

It is understood that the base station that the 5th aspect is related to can be used in the base station in the system, the user equipment that the 7th aspect is related to is can be used in the UE in the system.

Tenth aspect present invention also provides a kind of communication system, it may include:

Base station, for determining the time domain length and/or frequency domain length of resource block, for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

It is also used to configure the first DM-RS for resource block, the antenna port of the first DM-RS is UE special demodulating antenna port；

It is also used to transmission resource block, the reference signal part of the information of resource block includes the first DM-RS；

UE, for receiving resource block；

It is also used to demodulate the data portion of the information carried on resource block according to the first DM-RS.

It is understood that the base station that the 6th aspect is related to can be used in the base station in the system, the user equipment that eighth aspect is related to is can be used in the UE in the system.

As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that in the embodiment of the present invention when resource block is the first CRS and supplement CRS, supplementing CRS includes three types, that is the 2nd CRS, 3rd CRS and the 2nd CRS and the 3rd CRS, supplementing the 2nd CRS is since the mode of short TTI makes the first CRS poor for the demodulation performance of certain data, add that the 2nd CRS enables to that the first CRS can be combined by the poor data of the first CRS demodulation performance and the 2nd CRS is demodulated, 3rd CRS is due to supporting the UE expense of 4 antenna ports and DMRS very big, the expense of reference signal in each subframe can be reduced by the 3rd CRS that the first CRS and additional configurations of the less antenna port number of reasonable disposition increase antenna port newly, this Outside, the case where lazy weight of the DMRS under the mode for short TTI has also been devised in the embodiment of the present invention, by the time domain length and frequency domain length of determining resource block first, it then carries out according to the time domain length and frequency domain length of resource block the first DM-RS of corresponding configuration, so that all having enough DMRS in all resource blocks.

Detailed description of the invention

Fig. 1 a is the turnaround time time delay figure that OFDM symbol data are transmitted in prior art LTE system；

Fig. 1 b is the interaction schematic diagram of cell base station and UE in prior art LTE system；

Fig. 2 is the CRS mapping schematic diagram of different antennae port in normal sub-frames in the prior art；

Fig. 3 is one embodiment figure of the transmission method of the reference signal of the embodiment of the present invention；

Another implementation example figure of the transmission method of the reference signal of Fig. 4 a embodiment of the present invention；

Another implementation example figure of the transmission method of the reference signal of Fig. 4 b embodiment of the present invention；

Fig. 4 c is another implementation example figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 4 d is another implementation example figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 4 e is another implementation example figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 4 f is another implementation example figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 4 g is another implementation example figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 5 is another implementation example figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 6 is another implementation example figure of reference signal distribution in the method for transmitting signals of the embodiment of the present invention；

Fig. 7 is one embodiment figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 8 is one embodiment figure of the transmission method of the reference signal of the embodiment of the present invention；

Fig. 9 is one embodiment figure of the transmission method of the reference signal of the embodiment of the present invention；

Figure 10 is one embodiment figure of the transmission method of the reference signal of the embodiment of the present invention；

Figure 11 is one embodiment figure of the base station of the embodiment of the present invention；

Figure 12 is one embodiment figure of the base station of the embodiment of the present invention；

Figure 13 is one embodiment figure of the user equipment of the embodiment of the present invention；

Figure 14 is one embodiment figure of the user equipment of the embodiment of the present invention；

Figure 15 is one embodiment figure of the communication system of the embodiment of the present invention；

Figure 16 is one embodiment figure of the communication system of the embodiment of the present invention；

Figure 17 is one embodiment figure of the base station of the embodiment of the present invention；

Figure 18 is one embodiment figure of the user equipment of the embodiment of the present invention.

Specific embodiment

The embodiment of the invention provides a kind of transmission methods of reference signal, for enable it is some channel estimations are carried out using the first CRS when performance bad time-domain symbol precision of channel estimation improved by supplement CRS, so as to improve the demodulation performance of short TTI transmission under high speed or high order modulation scene.

In order to enable those skilled in the art to better understand the solution of the present invention, following will be combined with the drawings in the embodiments of the present invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.

It is described in detail separately below.

Description and claims of this specification and the (if present)s such as term " first " in above-mentioned attached drawing, " second ", " third " " the 4th " are to be used to distinguish similar objects, without specific for describing Sequence or precedence.It should be understood that the data used in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be implemented with the sequence other than the content for illustrating or describing herein.Furthermore, term " includes " and " having " and their any deformation, it is intended to cover and non-exclusive includes, such as, the process, method, system, product or equipment for containing series of steps or module those of are not necessarily limited to be clearly listed step or module, but may include other steps or module being not clearly listed or intrinsic for these process, methods, product or equipment.

It is being continually striving to reduce time delay in the evolution process of mobile communication standard, it eats dishes without rice or wine technically to the scheduling interval of the most apparent physical layer of time delay influence in wideband code division multiple access (Wideband Code Division Multiple Access, it WCDMA) is 10 milliseconds of (millisecond, ms), (High-Speed Packet Access is accessed to high-speed packet, 2ms is shortened to when HSPA), 1ms is shortened to when to long term evolution (Long Term Evolution, LTE).The business demand of small time delay causes LTE physical layer to need to introduce short transmission time interval (Transmission Time Interval, TTI), further shortens scheduling interval, i.e. TTI can shorten to the integer symbol less than 1ms from normal 1ms.Wherein, the above-mentioned symbol referred to can be an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol, alternatively referred to as time-domain symbol in LTE system.

By taking the short TTI length of uplink and downlink is all 1 time-domain symbol as an example.It as shown in Figure 1a, is turnaround time (Round-Trip Time, RTT) time delay figure of 1 OFDM symbol data transmission.Based on hybrid automatic repeat-request (Hybrid Automatic Repeat Request, HARQ) technology, if base station is in OFDM symbol 3 to user device transmissions data, if user equipment is to the correct demodulation coding of the data received, then character (Acknowledgement is confirmed to base station feedback in OFDM symbol 7, ACK), if user equipment does not have correct demodulation coding to the data received, then in OFDM symbol 7 to base station feedback negative acknowledge character (Negative Acknowledgment, NACK), and base station then acknowledges receipt of ACK/NACK in symbol 11.Therefore when being carried out data transmission with 1 symbol TTI, the RTT of data transmission is 8 symbols, and about 576 microseconds need the RTT of 8ms when relative to 1ms TTI transmission, time delay greatly shortens.

In the scheduling of normal 1ms, the transmission mode demodulated based on CRS and DMRS can be supported.However, in order to reduce time delay, UE can only carry out channel estimation and demodulation using the short TTI being scheduled and the CRS that occur before when carrying out short TTI transmission to UE using the transmission mode demodulated based on CRS.If the length of short TTI only has one to two time-domain symbols, for some symbols, such as OFDM Symbol 3, OFDM symbol 10 etc., the channel information on the symbol can only be obtained by the extrapolation of CRS, and the time gap of a symbol comprising CRS nearest from the symbol may be 3 symbols, have an impact to the demodulation performance under high speed, high order modulation scene, therefore, it is necessary to supplement CRS to improve the demodulation performance of short TTI.In addition, if short TTI is also required to the transmission mode for supporting to demodulate based on DMRS, needing to redesign DMRS to each scheduling unit of short TTI since present demodulated reference signal is all based on 1ms TTI design.If the UE of the transmission mode of CRS demodulation of the existing support based on 4 antenna ports in system, have again and supports the UE based on the DMRS transmission mode demodulated, in view of needing while configuring the CRS and additional DMRS of 4 antenna ports, the reference signal expense of each subframe can be very big, therefore, it is necessary to rationally control the expense of the CRS of supplement.Therefore, in order to solve CRS and additional DMRS above-mentioned while that configure 4 antenna ports, the reference signal expense of each subframe can be very big, and when being dispatched using the short TTI of the transmission mode of DMRS demodulation, each scheduling unit has required two problems of DMRS, needs to there are reference signals when short TTI transmission to redesign in system.

Here is a technical application scene of the embodiment of the present invention: please referring to Fig. 1 b, Fig. 1 b is the interaction schematic diagram of cell base station and UE in prior art LTE system；Wherein, it is in the UE102 and UE103 communicated in 101 coverage area of cell base station and with cell base station 101；Wherein, cell base station 101 is the base station of LTE system, and UE102 and UE103 are the UE under corresponding LTE system, and cell base station 101 and UE102 are the equipment for supporting short TTI transmission, and UE103 is the equipment for not supporting short TTI transmission.Short TTI can be used in cell base station 101 or normal 1ms TTI and UE102 is communicated；Cell base station 101 can be used normal 1ms TTI and UE103 and be communicated.

It is understood that the technical solution of the embodiment of the present invention can be applied to LTE or lte-a system, it also can be applied to other communication systems for needing to increase reference signal density.

It can be understood that, the symbol referred in the technical solution of the embodiment of the present invention can be OFDM symbol, one OFDM symbol includes cyclic prefix (Cyclic Prefix, CP) partially with message segment part, and wherein message segment part includes all information of an OFDM symbol；CP is the repetition to a part of information segment signal.The symbol referred in the technical solution of the embodiment of the present invention can be an OFDM symbol in LTE or lte-a system, be also possible to the symbol of other kinds of communication, this is not limited by the present invention.

It is understood that from time dimension, the time span of a radio frames is 10ms, and the time span of a subframe is 1ms, and a radio frames include 10 sons in LTE or lte-a system Frame.Specific there are two types of sub-frame formats: one is normal cyclic prefix (Normal Cyclic Prefix, NCP) sub-frame formats, a NCP subframe includes 14 OFDM symbols or 2 time slots；By OFDM symbol, label to 13, No. 0 to No. 6 OFDM symbol is odd numbered slots since 0, and No. 7 to No. 13 OFDM symbol is even timeslots.Another kind is long loop prefix (Extended Cyclic Prefix, ECP) sub-frame formats, and an ECP subframe includes 12 OFDM symbols or 2 time slots；By OFDM symbol, label to 11, No. 0 to No. 5 OFDM symbol is odd numbered slots since 0, and No. 6 to o.11 OFDM symbol is even timeslots.

From frequency dimension, minimum unit is subcarrier.From the point of view of time-frequency two-dimensional is combined, the resource used is transmitted for an antenna port, minimum unit is resource units (Resource Element, RE), and a RE includes an OFDM symbol in the time domain, includes a subcarrier on frequency domain.Resource unit group (Resource-Element Group, REG) may include integer RE, for example, a REG may include 4 or 16 RE.One Physical Resource Block (Physical Resource Block, PRB) includes a time slot in the time domain, includes 12 subcarriers on frequency domain；It include a PRB pair (PRB pair) in one subframe.Resource block group (Resource Block Group, RBG) may include integer PRB, for example, a RBG may include 1,2,3,4 or other integers PRB.

It is understood that the time domain length of resource block can be indicated by the number of symbol, and the frequency domain length of resource block can be indicated by the number of PRB or RBG or subcarrier or RE or REG in short TTI transmission.System bandwidth can be indicated by integer PRB or integer number of subcarriers or integer RE or integer REG.For example, 10M system bandwidth can be indicated by 50 PRB or 600 subcarriers or 600 RE, or when a REG includes 4 RE, 10M system bandwidth can be indicated with 150 REG.It should be noted that system bandwidth can also be indicated with integer RBG, it is assumed for example that system bandwidth is 10M or 50 PRB, and 1 RBG includes 3 PRB, then system bandwidth includes 17 RBG, and wherein the last one RBG only includes 2 PRB.In addition, if being all by taking NCP sub-frame formats as an example, ECP sub-frame formats can be derived from embodiments of the present invention without specified otherwise.

It will also be appreciated that base station can configure cell-specific antenna port (Cell-specific antenna port) for community user in LTE or lte-a system, the number of the cell-specific antenna port can be 1,2 or 4.When the number of cell-specific antenna port is 1, base station is that community user configures port 0；When the number of cell-specific antenna port is 2, base station is that community user configures port 0 and port 1；When the number of cell-specific antenna port is 4, base station is that community user configures port 0, port 1, end Mouth 2 and port 3.Base station is according to the cell-specific antenna port of configuration and public reference signal (the Cell-specific Reference Signal of predefined respective cell dedicated antenna port, CRS) pattern configures CRS on resource block, and the resource block for carrying the CRS is transmitted to community user.Since CRS can be identified by community user, community user can use CRS and carry out automatic growth control (Automatic Gain Control, AGC) adjustment, Time and Frequency Synchronization, wireless resource management (Radio Resource Management, RRM) measurement, control channel demodulation, channel state information (Channel State Information, CSI) measurement, data channel demodulation etc. operate.

It will also be appreciated that different according to the format of sub-frame transmission, can there are two types of sub-frame transmission modes, one is normal sub-frames, Fig. 2 gives position of the RE of the CRS mapping of different antennae port in prior art normal sub-frames in PRB pair, wherein symbol R_pIndicate the RE where the reference signal of cell-specific antenna port p, filling pattern is that the straight line of lower-left or upper right then indicates that on RE where the filling pattern be existing CRS in Fig. 2.It is distinguished since signal corresponding on different antenna ports is transmitted using different space resources, when the RE on an antenna port is used for transmission CRS, the RE on other antenna ports does not transmit any information, therefore the resource of the CRS transmission of different antennae port is that time-frequency is separated.In FIG. 2, it is assumed that Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) occupies the first two symbol of subframe.Another kind is multimedia broadcast multicast single frequency network (Multimedia Broadcast multicast service ingle Frequency Network, MBSFN) subframe, for MBSFN sub-frame, CRS is only in the non-MBSFN area transmissions of MBSFN sub-frame, wherein, the non-region MBSFN of MBSFN sub-frame can refer to region shared by PDCCH, usually preceding 1 to 2 symbols of the subframe.For example, it is assumed that the PDCCH symbol numbers of a MBSFN sub-frame are 2, when the port number of CRS is 1 or 2, CRS only is transmitted on first symbol of the MBSFN sub-frame；When the port number of CRS is 4, CRS only is transmitted on the first two symbol of the MBSFN sub-frame.

UE in all embodiments of the invention can be mobile phone, computer or portable, pocket, hand-held, built-in computer, the vehicle-mounted terminal device that can be exchanged mobile device of voice or data etc. with wireless access network and can be communicated through wireless access network (Radio Access Network, RAN) with one or more core nets.

Base station in all embodiments of the invention can be evolved base station (Evolutional Node B, eNB), macro base station, micro-base station, femto base station, access website (Access Point, AP), website (Transmission Point is transmitted, TP), distal end radio port (Remote Radio Head, RRH) etc. The present invention does not limit this.But for convenience of description, following embodiments will be illustrated by taking base station and UE as an example.

Embodiments of the present invention is described in detail with reference to the accompanying drawing.

Embodiment 1

Referring to Fig. 3, be one embodiment figure of reference signal transmission method provided in an embodiment of the present invention, as shown in figure 3, a kind of reference signal transmission method provided in an embodiment of the present invention, it may include following steps:

301, base station is that resource block configures the first CRS.

Wherein, the antenna port of the first CRS is cell-specific antenna port, and for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part.

It should be noted that, data portion in information includes control information and/or data information, these information specifically carry on the physical channel, the physical channel includes following one or combination: PDCCH, PDSCH, Physical Downlink Control Channel (the Enhanced-Physical Downlink Control CHannel of enhancing, EPDCCH), Physical Control Format Indicator Channel (Physical Control Format Indicator Channel, PCFICH), physical mixing retransmission indicating chanel (Physical hybrid ARQ indicator channel, PHICH), or it is some Function is identical in new standard, but the channel that title is different, such as the control channel introduced in short TTI transmission or data channel etc., and certainly, the control information for dispatching the resource block can not also be carried on the resource block.UE can determine the time domain length of the resource block by the control information or predefined mode of the demodulation dispatching resource block.In addition, a kind of more special situation is that data portion in information does not include any information, i.e. the information of resource block carrying only includes reference signal part.

It should be noted that in embodiments of the present invention, the antenna port information of the first CRS is usually determined by base station.Base station can make the antenna port information of the first CRS of UE acquisition in several ways.Such as base station can be notified the antenna port information of the first CRS to UE by RRC signaling or the modes such as MAC signaling or physical layer signaling；It base station can be by Physical Broadcast Channel (Physical broadcast channel, PBCH the mode that cyclic redundancy check (Cyclic Redundancy Check, CRC)) carries out scrambling code notifies the antenna port information of the first CRS to UE；Base station can be notified the antenna port information of the first CRS to UE by predefined mode；When base station can be communicated by multiple carrier waves and UE, base station can also be notified the antenna port information of the first CRS of this carrier wave to UE by the signaling of non-carrier wave, specifically which kind of mode notify UE that can be selected according to the actual situation using.Correspondingly, UE can determine of the antenna port of the first CRS according to the antenna port information of the first CRS of acquisition Several or the first CRS antenna end slogan.

It should be noted that the first CRS can be transmitted in a variety of different subframes during specific implementation step 301, as optional, such as the first CRS can be the CRS transmitted in normal sub-frames.In another example the first CRS is the CRS transmitted in MBSFN sub-frame.

It should be noted that, during specific implementation step 301, the antenna port of first CRS can change according to the variation of the quantity for the antenna port that base station is the first CRS that resource block configures, for example, if base station is that the number of the antenna port of the first CRS of resource block configuration is 1, the antenna port of the first CRS is port 0 at this time.In another example the antenna port of the first CRS is port 0 and port 1 at this time if the number that base station is the antenna port of the first CRS of resource block configuration is 2.In another example the antenna port of the first CRS is port 0, port 1, port 2 and port 3 at this time if the number that base station is the antenna port of the first CRS of resource block configuration is 4.

It should be noted that the size of resource block can be configured according to the actual situation during specific implementation step 301, for example, resource block size can be all available resources of system integer subframe, such as include a subframe in resource block time domain, include whole system bandwidth on frequency domain.Again for example, resource block size can be the complete or collected works of all available resources of system.Again for example, resource block size can be the subset of all available resources of system, such as resource block size is determined by the scheduling mode that short TTI is transmitted, and include integer PRB or integer RBG or integer number of subcarriers on frequency domain, include integer symbol in time domain.Certainly, the size of resource block can also be configured according to other rules, as long as meeting short TTI transmission requirement.

It should be noted that during specific implementation step 301, since resource block can be subset or the complete or collected works of all available resources of system, base station is that concretely base station is that all available resources of system configure the first CRS to the first CRS of resource block configuration.Alternatively, base station be resource block configure the first CRS specifically can also be base station be the first CRS of resource distribution comprising the resource block.Alternatively, base station be resource block configure the first CRS specifically can also be base station be only the resource block configure the first CRS.

302, base station is the resource block configuration supplement CRS configured with the first CRS.

Wherein, the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different, and reference signal part includes the first CRS and supplement CRS.

It should be noted that the antenna port of the first CRS refers to the antenna port of the first CRS of transmission, for example, for the situation of the first CRS of only one port transmission, to transmit the antenna of the first CRS For port-for-port 0, then for base station, the first CRS is issued by port 0, for UE, the first CRS is received by port 0；Again for example, the situation that the first CRS is spread out of for multiple ports, for the antenna port to transmit the first CRS is port 0 and port 1, then for base station, the first CRS is issued by the port 0 and port 1, for UE, the first CRS is received by port 0 and port 1.The antenna port of the 2nd CRS of subsequent appearance and the antenna port of the 3rd CRS are similar with this situation in the embodiment of the present invention.

It should be noted that, when carrying out short TTI transmission to UE using the transmission mode demodulated based on CRS, in order to reduce time delay, UE can only carry out channel estimation and demodulation using the short TTI being scheduled and the CRS that occur before in the scheduling of normal 1ms.If the length of short TTI only has one to two time-domain symbols, for some symbols, such as OFDM symbol 3, OFDM symbol 10 etc. can only obtain the channel information on the symbol by the extrapolation of CRS, and the time gap of a symbol comprising CRS nearest from the symbol may be 3 symbols, have an impact to the demodulation performance under high speed, high order modulation scene, therefore, for the demodulation performance under this situation, needing to improve short TTI by supplement supplement CRS on the basis of a CRS.

It should be noted that there is no absolute ordinal relations between step 302 and step 301.

It should be noted that the antenna port information for supplementing CRS can be used various ways and be determined during specific implementation step 302, for example, the antenna port information of supplement CRS is determined by base station.In another example the antenna port information for supplementing CRS is to be determined by UE and passed through signaling the antenna port information of supplement CRS is reported to base station.In another example the antenna port information for supplementing CRS is predetermined.

It should be noted that during specific implementation step 302, as optional, supplement CRS includes the 2nd CRS, and the antenna port of supplement CRS is identical as the antenna port of the first CRS.

For example, base station is the first CRS that resource block configuration antenna port is port 0 and port 1, and base station is that the resource block configured with the first CRS configures the 2nd CRS, and the antenna port of the 2nd CRS is port 0 and port 1, identical as the antenna port of the first CRS.

It should be noted that during specific implementation step 302, as optional, supplement CRS includes the 3rd CRS, and the antenna port of supplement CRS is different from the antenna port of the first CRS.

For example, base station is the first CRS that resource block configuration antenna port is port 0 and port 1, and base station is that the resource block configured with the first CRS configures the 3rd CRS, and the antenna port of the 3rd CRS is Port 2 and port 3, it is different from the antenna port of the first CRS.It is further alternative, the value of the antenna port number of first CRS can be 1,2,4, up to 4, corresponding four ports are respectively port 0, port 1, port 2 and port 3, when the antenna port of the first CRS is only port 0 and port 1, and the number of the antenna port of the 3rd CRS is 2, the antenna port of the 3rd CRS can be port I and port I+1, port I and port I+1 can be port 2 and port 3 or port I and port I+1 as other port numbers.When the antenna port of the first CRS is only port 0, the number of the antenna port of 3rd CRS is 1 or 3, when the number of the antenna port of the 3rd CRS is 1, the antenna port of the 3rd CRS can be port I, and port I can be port 1 or other are not the port numbers of port 2 and port 3；When the number of the antenna port of the 3rd CRS is 3, the antenna port of 3rd CRS can be port I, port I+1 and port I+2, port I, port I+1 and port I+2 can be port 1, port 2 and port 3, or port I, port I+1 and port I+2 can be other port numbers, that is the antenna port of the 3rd CRS is the virtual-antenna port of the first CRS, and UE, which needs to combine the first CRS and the 3rd CRS, could complete the operation such as CSI measurement, data channel demodulation.

It should be noted that, during specific implementation step 302, as optional, supplement CRS includes above-mentioned 2nd CRS and the 3rd CRS, i.e. the antenna port of the 2nd CRS is identical as the antenna port of the first CRS in the antenna port of supplement CRS, and the antenna port of the 3rd CRS is different from the antenna port of the first CRS.

For example, base station is the first CRS that resource block configuration antenna port is port 0 and port 1, base station is that the resource block configured with the first CRS configures the 2nd CRS and the 3rd CRS, wherein, the antenna port of 2nd CRS is port 0 and port 1, the antenna port of 3rd CRS is port 2 and port 3, i.e., some antennas port is identical as the antenna port of the first CRS in the antenna port of supplement CRS, and some antennas port is different from the antenna port of the first CRS.

It should be noted that situation one, supplement CRS only include the 2nd CRS since the supplement CRS in the embodiment of the present invention particularly may be divided into three kinds of situations；Situation two, supplement CRS only include the 3rd CRS；Not only included the 2nd CRS in situation three, supplement CRS, but also has included the 3rd CRS；This three kinds of situations are introduced separately below.

Situation one, supplement CRS only include the 2nd CRS.

It is understood that in the demand of not newly-increased antenna port, it is only necessary to the quantity for rationally increasing by twoth the CRS identical with antenna port of the first CRS in resource block, allow CRS guarantee at a high speed or Performance under the various scenes such as high order modulation, i.e. supplement CRS only includes the 2nd CRS.

It should be noted that during specific implementation step 302, as optional, it include base station is that the antenna port of at least one the first CRS configures the 2nd CRS in resource block that base station, which is resource block configuration supplement CRS,.Such as the first the antenna port of CRS have port 0 and port 1, when configuring two CRS, if the CRS required supplementation in resource block only relates to a port, then can only it be configured on port 0, without considering port 1, or it only configures on port 1 without considering port 0, the CRS required supplementation in resource block only relates to two ports, then configured on two ports, if the antenna port of corresponding first CRS is there are four situation, the 2nd CRS is configured on 1 to 4 ports according to supplement demand.Further alternative, base station can determine the position in resource block of corresponding 2nd CRS of antenna port of at least one the first CRS according to the position or density of the first CRS.

For example, please refer to Fig. 4 a, wherein in Fig. 4 a to Fig. 4 g and Fig. 5 and Fig. 6, each filling pattern is expressed as follows: filling pattern is that the straight line of lower-left or upper right then indicates that on RE where the filling pattern be the first CRS, filling pattern is the straight line of upper left or lower right then indicates to be the 2nd CRS on RE where the filling pattern, and filling pattern is that the straight line of longitudinal direction then indicates that on RE where the filling pattern be the 3rd CRS.

First CRS is position of the RE of the CRS mapping of 2 cell-specific antenna ports of configuration in normal sub-frames in PRB pair, symbol R_pIndicate the RE where the reference signal of antenna port p；2nd CRS is position of the RE of the CRS mapping of the port 0 and port 1 of the correspondence CRS antenna port of the position and density determination according to the RE where the first CRS in PRB pair in PRB pair.In 1 PRB pair, 168 RE are shared, wherein the density of the first CRS is 16/168, and the place the first CRS symbol is 0,4,7,11, considers time-domain position, can be respectively the 2nd CRS that port 0 and port 1 respectively supplement 1 RE on symbol 2 and symbol 9；Consider frequency domain position, the port 0 of supplement is equal at the interval of frequency domain with the reference signal of port 1.The density of the first CRS and the 2nd CRS in 1 PRB pair after supplement is 20/168.

Again for example, Fig. 4 b is please referred to, the first CRS is position of the RE of the CRS mapping of 4 cell-specific antenna ports of configuration in normal sub-frames in PRB pair, symbol R_pIndicate the RE where the reference signal of antenna port p.Wherein, the CRS density of the CRS density ratio port 0 and port 1 of port 2 and port 3 is small, therefore base station can supplement the 2nd CRS of corresponding ports 2 and port 3 on symbol 5 and symbol 12 according to the reference signal pattern of port 2 and port 3 in the first CRS on symbol 1 and symbol 8. It should be noted that Fig. 4 b is a schematic diagram, wherein the position of the reference signal of corresponding ports 2 and the 2nd CRS of port 3 can be interchanged.

Due to the UE that may be simultaneously present the UE using normal 1ms TTI transmission in system and transmitted using short TTI, for the UE for using short TTI to transmit, UE by CSI metrical information be reported to base station to base station using the CSI information to the UE be scheduled between time shorten, the gain of available quick CSI feedback under the scene of high speed, therefore CRS can be supplemented according to the length of scheduled TTI.During specific implementation step 302, as optional, base station is that resource block configuration supplement CRS includes that base station according to the time domain length and/or frequency domain length of resource block configures supplement CRS.Before base station is resource block configuration supplement CRS, the time domain length and/or frequency domain length for being scheduled to the resource block of UE can be first determined.In short TTI transmission, the length of TTI can be the integer time-domain symbol less than 14, such as the time-domain symbol number of the TTI dispatched every time is 1,2,3,4,5,6,7 etc.；Frequency domain dispatching length can be identical with the length that 1ms TTI is dispatched, can also be longer or shorter than the length that 1ms TTI is dispatched.Optionally, base station configures the 2nd CRS in the resource block according to the time domain length and/or frequency domain length of resource block for the antenna port of at least one the first CRS.Further alternative, base station can determine the position in the resource block of corresponding 2nd CRS of antenna port of at least one the first CRS according to the position or density of the first CRS in the time domain length and/or frequency domain length of resource block and the resource block.

For example, Fig. 4 b is equally please referred to, the first CRS is position of the RE of the CRS mapping of 4 cell-specific antenna ports of configuration in normal sub-frames in PRB pair, symbol R_pIndicate the RE where the reference signal of antenna port p.Assuming that the subframe can be divided into four short TTI, wherein the length of the 1st and the 3rd short TTI is 4 symbols, the length of 2nd and the 4th short TTI is 3 symbols, it can be seen from Fig. 4 b in the scheduling resource block of the 2nd and the 4th short TTI, the CRS not comprising port 2 and port 3.In view of small in the CRS density ratio port 0 of 1 PRB pair inner port 2 and port 3 and the CRS density of port 1, base station can supplement the 2nd CRS of corresponding ports 2 and port 3 in the resource block of the 2nd and the 4th short TTI according to the reference signal pattern of port 2 and port 3 in the first CRS on symbol 1 and symbol 8.

It should be noted that a subframe may include the short TTI of a variety of different lengths, it can also only include a kind of short TTI of length.A subframe contains the short TTI of two kinds of length of 3 symbols and 4 symbols in above-mentioned example.Fig. 4 c, Fig. 4 d, Fig. 4 e and Fig. 4 f be set forth the antenna port number of the first CRS be 2, TTI length is 1,2,3,4 time-domain symbols when according to TTI length supplement second The example of CRS, wherein the port-for-port 0 of the 2nd CRS or port 1.

In an embodiment of the present invention, optionally, the 2nd CRS is the proprietary reference signal of cell, it can the reference signal identified by all UE in cell.Optionally, the 2nd CRS is the proprietary reference signal of group, for example is the reference signal that can be supported the UE identification of short TTI transmission of one or more length.Optionally, the 2nd CRS is UE special reference signal, is only scheduled for the reference signal that the UE of the resource block comprising the 2nd CRS could be identified.Optionally, the 2nd CRS is UE special reference signal, and base station indicates that the 2nd CRS of UE whether there is and/or indicate position of the 2nd CRS in resource block by signaling.

Wherein, as optional, the transmission power of the 2nd CRS and the first CRS are identical or different.Optionally, when the transmission power difference of the 2nd CRS and the first CRS, base station can notify the relationship of the transmission power of UE the 2nd CRS and the first CRS by RRC signaling or MAC signaling or physical layer signaling or the modes such as predefined, the 2nd CRS and data transmission power relationship or the 2nd CRS transmission power information.The antenna port information of first CRS is notified the mode to UE similar by specific advice method with the explanation of 1 step 301 of embodiment, and details are not described herein again.

Wherein, as optional, the 2nd CRS and the first CRS are the reference signals with same characteristic features, such as the first CRS and the 2nd CRS do not carry precoding matrix information or the first CRS and the 2nd CRS carries precoding matrix information.Since the antenna port of the first CRS and the antenna port of the 2nd CRS are identical, UE can combine the first CRS and the 2nd CRS and carry out the operation such as AGC adjustment, Time and Frequency Synchronization, RRM measurement, control channel demodulation, CSI measurement, data channel demodulation.

Situation two, supplement CRS only include the 3rd CRS.

It is understood that in systems, base station can provide service for multiple UE in a cell, it is thus possible to the different scene of CRS antenna port number demand of the different UE to configuration occur.Optionally, base station is all UE the first CRS of configuration in a cell, to there is the UE of newly-increased antenna port demand to configure the first CRS and supplement CRS, wherein supplement CRS only includes the antenna port difference of the 3rd CRS, the 3rd CRS and the first CRS.

It should be noted that the newly-increased antenna port that base station is different UE configuration can be identical or different.For example, base station can be to the first CRS of all UE (such as the UE transmitted using 1ms and short TTI) 2 antenna ports of configuration, to the 3rd CRS of all 2 newly-increased antenna ports of the UE additional configurations transmitted using short TTI.Again for example, base station can configure the first of 1 antenna port to all UE CRS, to the 3rd CRS of 1 newly-increased antenna port of a portion UE additional configurations, to the 3rd CRS of wherein 3 newly-increased antenna ports of another part UE additional configurations.

During specific implementation step 302, optionally, base station is that resource block configuration supplement CRS includes the 3rd CRS of antenna port configuration that base station is at least one the 3rd CRS in resource block.

For example, referring to Fig. 5, the first CRS is position of the RE of the CRS mapping of 2 cell-specific antenna ports of configuration in normal sub-frames in PRB pair, symbol R_pIndicate that the RE where the reference signal of antenna port p, the antenna port of the first CRS are port 0 and port 1；The antenna port of 3rd CRS is port 2 and port 3, and the 3rd CRS is given in Fig. 5 and correspond to the position of RE that the CRS of CRS antenna port 2 and port 3 maps in PRB pair.Wherein, base station supplements the 3rd CRS of corresponding ports 2 ' and port 3 ' on symbol 1 and symbol 8 according to the reference signal pattern of port 2 and port 3 in the first CRS；According to the 3rd CRS of reference signal pattern supplement corresponding ports 2 and port 3 on symbol 1 and symbol 8 on symbol 5 and symbol 12.

During specific implementation step 302, optionally, base station can configure the 3rd CRS in the resource block according to the time domain length and/or frequency domain length of resource block for the antenna port of at least one the 3rd CRS.Base station is that before resource block configures the 3rd CRS, can first determine the time domain length and/or frequency domain length for being scheduled to the resource block of UE.

In one embodiment, referring to Fig. 5, the first CRS is position of the RE of the CRS mapping of 2 cell-specific antenna ports of configuration in normal sub-frames in PRB pair, symbol R_pIndicate the RE where the reference signal of antenna port p.Assuming that the subframe can be divided into four short TTI, wherein the length of the 1st and the 3rd short TTI is 4 symbols, and the length of the 2nd and the 4th short TTI is 3 symbols.Assuming that base station determines that the antenna port of the supplement CRS of the subframe is port 2 and port 3, base station can supplement the 3rd CRS of corresponding ports 2 and port 3 respectively in the scheduling resource block of above-mentioned short TTI.

In another embodiment, optionally, base station determines that the time domain length of the resource block is M time-domain symbol, and wherein M is the integer not less than 1 and no more than 14；And/or base station determines that the time domain length of the resource block is N number of subframe, wherein N is the integer not less than 1 and no more than 10.Optionally, base station determines that the frequency domain length of the resource block is P PRB or RBG or RE or REG, and wherein P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.At least one of it is further alternative, when base station determines that the time domain length of the resource block is M time-domain symbol, base station configuration supplement CRS includes the following steps: when M is whole not less than 1 and no more than 3 When number, the antenna port in each PRB of the base station in the resource block for the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 1 RE；When M is the integer not less than 4 and no more than 7, the antenna port in each PRB of the base station in the resource block for the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 2 RE；When M is the integer not less than 8 and no more than 14, the antenna port in each PRB of the base station in the resource block for the 3rd CRS of each of the CRS antenna port of at least one third configures 4 RE.

It should be noted that a subframe may include a variety of different short TTI length, it can also only include a kind of short TTI length.The port-for-port 0 and port 1, TTI length that the first CRS is set forth in Fig. 4 c to Fig. 4 g supplement the example of the 3rd CRS according to mentioned above principle when being 1,2,3,4,7 symbols, wherein the port-for-port 2 of the 3rd CRS and port 3.

In an embodiment of the present invention, the 3rd CRS can be configured to a plurality of types of reference signals, such as the 3rd CRS can be the proprietary reference signal of cell, it can the reference signal identified by all UE in cell.It in another example the 3rd CRS can be the proprietary reference signal of group, for example is the reference signal that can be supported the UE identification of short TTI transmission of one or more length.In another example, 3rd CRS is UE special reference signal, the reference signal that could identify of UE or UE that are only scheduled for the resource block comprising the 3rd CRS are only configured for the antenna port of the 3rd CRS, and base station just can supplement the 3rd CRS on the resource block that UE is scheduled for the UE.For another example the 3rd CRS is UE special reference signal, base station indicates that the 3rd CRS of UE whether there is and/or indicate position of the 3rd CRS in resource block by signaling.

Optionally, the transmission power of the 3rd CRS and the first CRS is identical or different.Optionally, when the transmission power difference of the 3rd CRS and the first CRS, base station can notify the relationship of the transmission power of UE the 3rd CRS and the first CRS by RRC signaling or MAC signaling or physical layer signaling or the modes such as predefined, the 3rd CRS and data transmission power relationship or the 3rd CRS transmission power information.

Optionally, the 3rd CRS and the first CRS is the reference signal with same characteristic features, such as the first CRS and the 3rd CRS do not carry precoding matrix information or the first CRS and the 3rd CRS carries precoding matrix information.Since the antenna port of the first CRS and the antenna port of the 3rd CRS are different, the antenna port of 3rd CRS is considered the virtual-antenna port of the first CRS, UE it needs to be determined that the 3rd CRS antenna port, can just combine the first CRS and the 3rd CRS and carry out AGC adjustment, Time and Frequency Synchronization, RRM measurement, control channel demodulation, CSI measurement, data channel demodulation etc. and operate.

Optionally, base station can make UE determine the antenna port of the 3rd CRS in several ways.For example, base station can be notified the port information for being used to determine the antenna port of the 3rd CRS to UE by RRC signaling or the modes such as MAC signaling or physical layer signaling；Base station can notify the port information for being used to determine the antenna port of the 3rd CRS to UE in such a way that the CRC to the PDCCH for dispatching the UE carries out scrambling code；Base station can be notified the port information for being used to determine the antenna port of the 3rd CRS to UE by predefined mode；When there are multiple carrier waves in base station, base station can also be notified the port information of the antenna port for being used to determine the 3rd CRS of this carrier wave to UE by the signaling of non-carrier wave, specifically which kind of mode notify UE that can be selected according to the actual situation using.It should be noted that, this is for determining that the port information of the antenna port of the 3rd CRS can be the number of the antenna port of the 3rd CRS, it is also possible to the antenna end slogan of the 3rd CRS, it can also be the total number of CRS antenna port, the total number of the CRS antenna port includes the number of the number of the antenna port of the 3rd CRS and the antenna port of the first CRS, since UE can determine the number of the antenna port of the first CRS, the number of the antenna port of the 3rd CRS can be calculated by the total number of CRS antenna port.Correspondingly, the number for the antenna port that UE can be used to determine that the port information of the antenna port of the 3rd CRS determines the 3rd CRS according to this or the antenna end slogan of the 3rd CRS.

It is understood that in systems, UE, which needs first to demodulate PDCCH just, can determine whether to receive Physical Downlink Shared Channel (Physical Downlink Shared CHannel, PDSCH).For being configured the UE of the 3rd CRS, optionally, UE is used only the first CRS and demodulates to PDCCH.Optionally, UE is used only the 3rd CRS and demodulates to PDCCH.Optionally, UE needs to be used in combination the first CRS and the 3rd CRS and could demodulate to PDCCH.It is understood that UE is before using the 3rd CRS it needs to be determined that the antenna end slogan of the number of the antenna port of the 3rd CRS or the 3rd CRS.

It can be understood that, channel estimation can be made more acurrate in view of the transmission power of reference signal is larger, when reference signal and data are sent on the same symbol, the fractional transmission power of data on the symbol can be put into the reference signal of the symbol by base station, so that the transmission power of reference signal is become larger, improves the performance of channel estimation.Correspondingly, UE it needs to be determined that reference signal and data power information, correctly data could be demodulated.Therefore, optionally, the power contorl parameters information of base station notice UE reference signal and data transmission, which may include at least one of following information: have the pilot data power ratio on the symbol of the first CRS and supplement CRS；Without the pilot data power ratio on the symbol of the first CRS and supplement CRS；There is the first CRS and supplements data power on the symbol of CRS and without the The ratio of data power on the symbol of one CRS and supplement CRS；The number of the antenna port of first CRS；The number of the antenna port of 3rd CRS；The sum of the number of antenna port of first CRS and the 3rd CRS.

Situation three, supplement CRS include the 2nd CRS and the 3rd CRS.

It can be understood that, in systems, base station can provide service for multiple UE in a cell, it may simultaneously include the situation for requiring supplementation with the 2nd CRS and the 3rd CRS, such as it is likely to occur the different scene of CRS antenna port number demand of the different UE to configuration, such as the CRS antenna port number that a portion UE is required is the CRS antenna port number required more than other UE, in another example for for all UE in the cell, the lazy weight of the first CRS in resource block leads to not guarantee the performance under the various scenes such as high speed or high order modulation.At this time, as optional, base station can configure the first CRS and the 2nd CRS for the UE in a cell, and to there is the UE of newly-increased antenna port demand additionally to configure the 3rd CRS again in these UE, the antenna port of 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS and the first CRS are different.

Wherein, during specific implementation step 302, as optional, including the 2nd CRS configuration step: base station configures the 2nd CRS in resource block for the antenna port of at least one the first CRS；And the 3rd CRS configuration step: base station configures the 3rd CRS in resource block for the antenna port of at least one the 3rd CRS.

It can be understood that, there is no absolute ordinal relations between 2nd CRS configuration step and the 3rd CRS configuration step, wherein, specific 2nd CRS configuration step is similar with said circumstances one, it can be found in said circumstances one, and specific 3rd CRS configuration step is similar with said circumstances two, reference can be made to said circumstances two, repeat no more herein.

It can be understood that, 2nd CRS and the 3rd CRS can be the reference signal of same type, such as the 2nd CRS and the 3rd CRS is cell special reference signal or the 2nd CRS and the 3rd CRS is group special reference signal or the 2nd CRS and the 3rd CRS is UE special reference signal.2nd CRS and the 3rd CRS can be different types of reference signal, such as the 2nd CRS is a group special reference signal, and the 3rd CRS is UE special reference signal or the 2nd CRS is UE special reference signal, and the 3rd CRS is a group special reference signal.In one embodiment, referring to Fig. 6, the first CRS is position of the RE of the CRS mapping of 2 cell-specific antenna ports of configuration in normal sub-frames in PRB pair, symbol R_pIndicate the RE where the reference signal of antenna port p.2nd CRS is corresponding CRS antenna port 0 and port 1 Group special reference signal, the 2nd CRS can identify by all UE for supporting short TTI to transmit；3rd CRS is the UE special reference signal of corresponding CRS antenna port 2 and port 3, and the 3rd CRS can be configured for the 3rd CRS antenna port and be scheduled for carrying the UE identification of the resource block of the 3rd CRS.

It can be understood that, equally can be found in Fig. 4 c to Fig. 4 g, Fig. 4 c to Fig. 4 g be respectively the antenna port number of the first CRS be 2, when the time-domain symbol quantity of short TTI is 1,2,3,4,7 in PRB pair the first CRS, the 2nd CRS and the 3rd CRS potassium ion distribution.

It should be noted that, when the time-domain symbol according to short TTI configures the first CRS, the 2nd CRS and three CRS in resource block, in the resource block, RE where RE and the 3rd CRS where 2nd CRS is different, it is directed to for a RE in resource block, the CRS of an antenna port can be only configured as, certainly, if can be configured according to system current demand when the 3rd CRS of the 2nd CRS and configuration the 3rd CRS step configuration that configure according to above-mentioned the 2nd CRS step of configuration are configured in the same RE on resource block.For example, it is such as currently big to the 3rd CRS demand, then priority of the 3rd CRS in configuration is higher, such as, assuming that major part UE requires to complete receiving end signal processing using the 3rd CRS in cell, the 3rd CRS can be preferentially configured on the RE in same RE overlapping cases for the 2nd CRS and the 3rd CRS at this time；In another example, it is currently big to the 2nd CRS demand, the UE for only having very little part i.e. in cell needs to complete receiving end signal processing using the 3rd CRS, more UE need to carry out assisted channel estimation using the 2nd CRS, make the demodulation performance that can guarantee receiving end under high speed or the scene of high-order, at this point, can preferentially configure the 2nd CRS on the RE in same RE overlapping cases for the 2nd CRS and the 3rd CRS.It should be noted that this corresponding antenna port of CRS needed in the way of the configuration of system current demand on the notice UE RE of base station.

It can be seen that, in the present embodiment, when appearance the 2nd CRS and the 3rd CRS is overlapped on the RE of resource block, maximally efficient distribution can be flexibly carried out according to present case, certainly, in some embodiments, when appearance the 2nd CRS and the 3rd CRS is overlapped on the RE of resource block, rule can also be pre-defined, i.e., when an overlap occurs, is allocated to the 2nd CRS or the 3rd CRS without exception.

Optionally, in the present embodiment, the first CRS and the 2nd CRS have identical antenna virtualization mode, and the first CRS and the 3rd CRS can have identical antenna virtualization mode, can also there is different antenna virtualization modes.As an example it is assumed that the antenna port number that base station configures the first CRS is 2, the antenna port number of the 3rd CRS is also 2, and there are 8 physical antennas in base station.During antenna virtualization, the antenna port of each first CRS and the antenna port of each 3rd CRS can correspond to 2 physical antennas, i.e., 2 physical antennas send the information of the same antenna port carrying；Or, corresponding 2 physical antennas of the antenna port of each first CRS, the information of corresponding 1 physical antenna of the antenna port of each 3rd CRS, i.e., each first CRS antenna port carrying is sent by 2 physical antennas, and the information of each 3rd CRS antenna port carrying is sent by 1 physical antenna.

303, base station transmission carries the first CRS and supplements the resource block of CRS.

It is understood that the resource block is transmitted in base station after base station configures the first CRS and supplement CRS on resource block.Wherein, optionally, the first CRS and supplement CRS are only carried on the resource block；Optionally, on the resource block other than carrying the first CRS and supplement CRS, also carrying other information, such as control information and/or data information etc..

It should be noted that in the present embodiment, optionally, base station can be notified the size of resource block to UE by way of the instruction of predefined or signaling.Optionally, base station notifies that the time domain length of the resource block and the mode of frequency domain length can be identical or different.For example, base station can provide the length of resource block by predefined mode, and the frequency domain length of UE resource block is notified in such a way that signaling indicates；Base station can also notify the time domain length and frequency domain length of resource block in such a way that signaling indicates.

It should be noted that the content specifically executed for above-mentioned three kinds of situation steps 303 is different, for example, be directed to said circumstances one, when supplement CRS only includes two CRS, step 303 concretely: transmit the resource block for carrying the first CRS and the 2nd CRS in base station；

In another example for situation two, when supplement CRS only includes three CRS, step 303 concretely: transmit the resource block for carrying the first CRS and the 3rd CRS in base station；

For another example being directed to situation three, CRS was when not only having included the 2nd CRS but also having included three CRS for supplement, step 303 concretely: base station transmission carries the resource block of the first CRS, the 2nd CRS and the 3rd CRS.

It can be seen that, using the transmission method of the reference signal of the embodiment of the present invention, by the way that the first CRS and supplement CRS are configured and transmitted in resource block, when the antenna port of the antenna port of supplement CRS and the first CRS is identical, density of the first CRS in resource block can be increased, CRS is allowed to guarantee the performance under the various scenes such as high speed or high order modulation；When the antenna port difference of the antenna port of supplement CRS and the first CRS, it can support that difference UE is carried out data transmission using different CRS antenna ports in a cell.

Embodiment 2

The transmission method of another reference signal of the embodiment of the present invention is introduced below, referring to Fig. 7, one embodiment figure of reference signal transmission method provided in an embodiment of the present invention, as shown in Figure 7, the embodiment of the present invention provides a kind of transmission method of reference signal, it may include following steps:

701, base station determines the time domain length and/or frequency domain length of resource block.

Wherein, for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part.

It should be noted that the resource block is the resource block for signal transmission for being scheduled to UE, it is therefore desirable to determine the size of the resource block, the i.e. time domain length of the resource block and/or frequency domain length.Under normal conditions, which can be the subset of all available resources of system, be determined by the scheduling mode of base station, i.e., include integer PRB or integer RBG or integer number of subcarriers on frequency domain, include integer symbol in time domain.

It should be noted that, when not determining time domain length if frequency domain length has only been determined, then defaulting time domain length is 7 time-domain symbols or 14 time-domain symbols, that is, 1 time slot or 1 subframe of existing division mode, if determine time domain length and do not determine frequency domain length, then default is according to existing division mode, i.e. the frequency domain length frequency domain length that is 1 PRB or 1 RBG.

As optional, the time domain length and/or frequency domain length that base station determines resource block in step 701 are there are many mode, the specific time domain length that resource block is determined for base station, can be used such as at least one of under type,

Mode one, base station determine that the time domain length of resource block is M time-domain symbol, and M is the integer not less than 1 and no more than 14.

Mode two, base station determine that the time domain length of resource block is N number of subframe, and N is the integer not less than 1 and no more than 10.

Mode three, base station determine in a subframe comprising integer resource block, wherein, the time domain length of each resource block can be identical, such as subframe includes the resource block that resource block or a subframe that 7 TTI length be 2 symbols are 7 symbols comprising 2 TTI length；The time domain length of each resource block can not also be identical, such as a subframe includes 4 resource blocks, and corresponding TTI length is respectively 4,3,4,3 symbols.

The frequency domain length that resource block is determined for base station, can be used such as under type:

Base station determines that the frequency domain length of resource block is P PRB or RBG or RE or REG, and P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.

702, base station is that resource block configures the first DM-RS.

Wherein, the antenna port of the first DM-RS is UE special demodulating antenna port, and reference signal part includes the first DM-RS.

It is understood that can carry out the configuration process of the first DM-RS after determining resource block, specifically, determining the antenna port of the first DM-RS first, the port information of the antenna port can be determined by base station；It can also be determined by UE, and the antenna port information of the first DM-RS is reported to by base station by signaling；The antenna port of first DM-RS, which can also be, to be pre-defined, and base station and UE determine all in accordance with preparatory definition the antenna port of the first DM-RS.

Wherein, after being determined in step 701 to time domain length and/or frequency domain length, base station can be according to the difference of time domain length, and the antenna port for being the first DM-RS in every PRB configures different first DM-RS of RE quantity.

At least one of during specific implementation step 702, optionally, base station determines that the time domain length of resource block is M time-domain symbol, according to the difference of the time domain length of resource block, base station the first DM-RS of configuration includes the following steps:

One, when M is the integer not less than 1 and no more than 3, base station is that resource block configures the first DM-RS according to the antenna port of the first DM-RS, comprising:

Antenna port in each PRB of the base station in resource block for the first DM-RS of each of the antenna port of at least one the first DM-RS configures 1 RE；

Specifically, the distribution situation of the oneth DM-RS is similar with the situation for the 3rd CRS distribution in embodiment illustrated in fig. 3 in situation two when M is not less than 1 and is not more than 3.

Two, when M is the integer not less than 4 and no more than 7, base station is that resource block configures the first DM-RS according to the antenna port of the first DM-RS, comprising:

Antenna port in each PRB of the base station in resource block for the first DM-RS of each of the antenna port of at least one the first DM-RS configures 2 RE；

Specifically, the distribution situation of the oneth DM-RS is similar with the situation for the 3rd CRS distribution in embodiment illustrated in fig. 3 in situation two when M is not less than 4 and is not more than 7.

Three, when M is the integer not less than 8 and no more than 14, base station is that resource block configures the first DM-RS according to the antenna port of the first DM-RS, comprising:

Antenna port in each PRB of the base station in resource block for the first DM-RS of each of the antenna port of at least one the first DM-RS configures 4 RE.

It should be noted that in all non-threatening conditions, M can also take 3 and the alternate mode of 4 two kind of value, i.e. the time domain length of resource block is not one layer constant, but be alternately made of four time-domain symbols and three time-domain symbol length.

During specific implementation step 702, optionally, the at most supported antenna port number of the first DM-RS is Y, and corresponding ports are port A to port (A+Y-1)；Base station determines that the time domain length of resource block is M time-domain symbol, and M is the integer no more than 7；Base station determines that the antenna port number of the first DM-RS of UE is X, and corresponding ports are port A to port (A+X-1)；It includes at least one of following manner that base station, which configures the first DM-RS:

One, the antenna port for being each first DM-RS in each PRB of the base station in resource block configures X RE；Wherein, the first DM-RS of different antennae port uses different reference signal sequences, and the first DM-RS of different antennae port occupies identical running time-frequency resource.

Two, the antenna port for being each first DM-RS in each PRB of the base station in resource block configures Z RE, and Z can be the at most supported antenna port number Y of predefined value or the first DM-RS；Wherein, the first DM-RS of different antennae port uses different reference signal sequences, and when X is greater than 1, the first DM-RS of port occupies identical running time-frequency resource some or all of in X antenna port.For example, it is assumed that it is 2 that Y value, which is 4, Z value, when X is equal to 2, the first DM-RS of port A and port (A+1) occupy identical running time-frequency resource, occupy 2 RE in each PRB specially in resource block； When X is equal to 4, the first DM-RS of port A and port (A+1) occupy identical running time-frequency resource, 2 RE are occupied in each PRB specially in resource block, the first DM-RS of port (A+2) and port (A+3) occupy identical running time-frequency resource, occupy other 2 RE in each PRB specially in resource block.

Three, the antenna port for being each first DM-RS in each PRB of the base station in resource block configures Z RE, and Z is the value determined by the antenna port number X of the first DM-RS；Wherein, the first DM-RS of different antennae port uses different reference signal sequences.Such as, as shown in Figure 8, wherein, filling pattern is that the straight line of lower-left or upper right then indicates that on RE where the filling pattern be the first CRS, filling pattern is that the reference signal on the RE where laterally crossed longitudinally straight line then indicates the filling pattern is port A and port (A+1), filling pattern is that the reference signal on the RE where diagonal cross line then indicates the filling pattern is port A and port (A+1) when configuring two ports, it is when configuring four ports port (A+2) and port (A+3), specifically, assuming that Y value is 4, when X is equal to 2, Z value is 4, the first DM-RS of port A and port (A+1) occupy identical running time-frequency resource, 4 RE are occupied in each PRB specially in resource block；When X is equal to 4, Z value is 2, the first DM-RS of port A and port (A+1) occupy identical running time-frequency resource, 2 RE in above-mentioned 4 RE are occupied in each PRB specially in resource block, the first DM-RS of port (A+2) and port (A+3) occupy identical running time-frequency resource, and other 2 RE in above-mentioned 4 RE are occupied in each PRB specially in resource block.

During specific implementation step 702, optionally, first DM-RS is configured on first symbol or the first two symbol of resource block, UE can carry out the operation such as channel estimation after first symbol or the first two symbol for receiving resource block by the first DM-RS on the symbol, to reduce the time delay that UE demodulates the resource block.

It should be noted that the first DM-RS can be the reference signal for being used for down control channel or data channel demodulation that base station is transferred to UE, it is also possible to the reference signal for being used for uplink control channel or data channel demodulation that UE is transferred to base station.

Optionally, first DM-RS is UE special reference signal, the reference signal that could identify of UE or UE that are only scheduled for the resource block comprising the first DM-RS are only configured for the antenna port of the first DM-RS, and base station just can transmit the first DM-RS on the resource block that UE is scheduled for the UE.Optionally, the first DM-RS is UE special reference signal, and base station indicates the first DM-RS of UE by signaling It whether there is and/or indicate position of the first DM-RS in resource block.

Other than configuring the first DM-RS for resource block, as optional, base station is that the resource block configures the first CRS, and the antenna port of the first CRS is cell-specific antenna port.Optionally, when configuring a CRS in resource block, base station is that the resource block configures the 2nd CRS according to the antenna port of at least one the first CRS.

Wherein, the mode of the first CRS of concrete configuration can be found in step 301 part in embodiment illustrated in fig. 3, and the configuration process of the 2nd CRS can be found in the explanation of the situation one in the step 302 in embodiment illustrated in fig. 3, repeat no more herein.

703, base station transmission carries the resource block of the first DM-RS.

It is understood that the resource block is transmitted in base station after base station configures the first DM-RS in resource block.Wherein, optionally, reference signal is only carried on the resource block, specifically, the reference signal includes the first DM-RS or the reference signal includes the first DM-RS and the first CRS or the reference signal includes the first DM-RS, the first CRS and the 2nd CRS；Optionally, on the resource block other than carrying reference signal, also carrying other information, such as control information and/or data information etc..It should be noted that optionally, at least one of the first DM-RS and control information and data information carry identical precoding information when existing simultaneously at least one of the first DM-RS and control information and data information in resource block in resource block.

It is understood that being directed to above-mentioned three kinds of situations, the content that step 703 specifically executes is different, for example, being configured with the situation of the first DM-RS, step 703 for resource block specifically: transmit the resource block for carrying the first DM-RS in base station；

The situation of the first DM-RS and the first CRS, step 703 are configured with for resource block specifically: transmit the resource block for carrying the first DM-RS and the first CRS in base station；

Situation for resource block configured with the first DM-RS, the first CRS and the 2nd CRS, step 703 specifically: transmit the resource block for carrying the first DM-RS, the first CRS and the 2nd CRS in base station.

As can be seen that the embodiment of the present invention devises DM-RS proprietary in each short TTI transmission resource block for the short TTI transmission of different length, base station can be used based on the transmission mode of the short TTI transmission of DMRS demodulation and communicated with UE.

Embodiment 3

The embodiment of the present invention proposes the transmission method for corresponding to a kind of reference signal of the embodiment of the present invention 1, shows Method out can be executed by receiving device corresponding with the base station corresponded in the embodiment of the present invention 1.

Referring to Fig. 9, Fig. 9 is one embodiment figure of the transmission method of reference signal provided in an embodiment of the present invention, as shown in figure 9, the embodiment of the present invention provides a kind of transmission method of reference signal, it may include following steps:

901, UE receives the resource block for carrying the first CRS and supplementing CRS of base station transmission.

Wherein, the resource block is for carrying the information transmitted between the base station and UE, the information includes data portion and reference signal part, the reference signal part includes the first CRS and supplement CRS, the antenna port of first CRS is cell-specific antenna port, and the antenna port of the antenna port and the first CRS of the supplement CRS is identical or different.

It is understood that in embodiments of the present invention, UE, which obtains the method for the antenna port information of the first CRS and base station described in the embodiment of the present invention 1, keeps the UE acquisition method of antenna port information of the first CRS identical, and details are not described herein again.

It is understood that in embodiments of the present invention, the first CRS can be the CRS transmitted in normal sub-frames, it is also possible to the CRS transmitted in MBSFN sub-frame.

It is understood that in embodiments of the present invention, the configuration method of resource block size is identical as the configuration method of resource block size described in the embodiment of the present invention 1, and details are not described herein again.

It is understood that in embodiments of the present invention, base station is that resource block configures the method for the first CRS and base station described in the embodiment of the present invention 1 is that the resource block configuration method of the first CRS is identical, and details are not described herein again.

It should be noted that supplement CRS may include the 2nd CRS and/or the 3rd CRS, the antenna port of the 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the 2nd CRS.

Optionally, supplement CRS only includes the 2nd CRS, wherein the determination of the antenna port of the 2nd CRS and the 2nd CRS configuration process are identical as the method that the situation one in the step 302 of the embodiment of the present invention 1 describes, details are not described herein again.

Optionally, supplement CRS only includes the 3rd CRS, wherein the determination of the antenna port of the 3rd CRS and the 3rd CRS configuration process are identical as the method that the situation two in the step 302 of the embodiment of the present invention 1 describes, details are not described herein again.

Optionally, supplement CRS includes the 2nd CRS and the 3rd CRS, wherein the 2nd CRS and the 3rd CRS Antenna port determination and the 2nd CRS and the 3rd CRS configuration process in the step 302 of the embodiment of the present invention 1 situation three describe method it is identical, details are not described herein again.

It can be understood that, in embodiments of the present invention, when supplementing CRS including at least three CRS, UE, which obtains the method for the antenna port information of the 3rd CRS and base station described in the embodiment of the present invention 1, keeps the UE acquisition method of antenna port information of the 3rd CRS identical, and details are not described herein again.

It is understood that in embodiments of the present invention, UE determines that the method for the power information of reference signal and data notifies UE reference signal and the method for power contorl parameters information of data transmission identical with base station described in the embodiment of the present invention 1, and details are not described herein again.

It is understood that in embodiments of the present invention, UE determine the time domain length of resource block and method and the base station described in the embodiment of the present invention 1 of frequency domain length make UE determine resource block time domain length and frequency domain length method it is identical, details are not described herein again.

It should be noted that supplement CRS and the first CRS is the reference signal with same characteristic features, such as the first CRS and supplement CRS do not carry precoding matrix information or the first CRS and supplement CRS carries precoding matrix information.

Optionally, in embodiments of the present invention, the first CRS and the 2nd CRS has identical antenna virtualization mode, and the first CRS and the 3rd CRS can have identical antenna virtualization mode, can also there is different antenna virtualization modes.Specific virtualization mode process is similar with the process in the explanation of step 302 in embodiment illustrated in fig. 31 about antenna virtualization, and details are not described herein again.

902, UE demodulates the data portion of the information carried on resource block according to the first CRS and supplement CRS.

In the specific implementation process, which can also be performed following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation, RRM measurement, CSI measurement etc. according to the first CRS and supplement CRS.

It should be noted that, data portion in information includes control information and/or data information, these information specifically carry on the physical channel, the physical channel includes following one or combination: PDCCH, PDSCH, EPDCCH, PCFICH, PHICH, or function is identical in some new standards, but the control channel introduced in the channel that title is different, such as short TTI transmission or data channel etc., certainly, the control information for dispatching the resource block can not also be carried on the resource block.UE can determine the time domain length of the resource block by the control information or predefined mode of the demodulation dispatching resource block.Due to supplementing CRS It is the reference signal with same characteristic features with the first CRS, UE can demodulate the information carried on the resource block with Joint Replenishment CRS and the first CRS.In addition, a kind of more special situation is that data portion in information does not include any information, i.e. the information of resource block carrying only includes reference signal part.In this case, UE can execute following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation, RRM measurement, CSI measurement etc. according to the first CRS and supplement CRS.

It is understood that in systems, UE, which needs first to demodulate PDCCH just, can determine whether to receive PDSCH.For being configured the UE of the 3rd CRS, optionally, UE is used only the first CRS and demodulates to PDCCH.Optionally, UE is used only the 3rd CRS and demodulates to PDCCH.Optionally, UE needs to be used in combination the first CRS and the 3rd CRS and could demodulate to PDCCH.It is understood that UE is before using the 3rd CRS it needs to be determined that the antenna end slogan of the number of the antenna port of the 3rd CRS or the 3rd CRS.

It should be noted that, in the case where no supplement CRS, base station can notify the antenna port number of UE power contorl parameters and the first CRS by high-level signaling, UE is according to the data power on the determining symbol for having the first CRS of the antenna port number of the power contorl parameters and the first CRS and without the data power ratio on the symbol of the first CRS, to correctly be demodulated using the channel estimation results that the first CRS is obtained to the information carried on resource block.Therefore optional, UE receives the signaling for being used to determine power contorl parameters that base station is sent, the signaling can determine the power control information on resource block according to the signaling for radio resource control RRC signaling or media access control MAC signaling or physical layer signaling, UE.Optionally, the power control information is specially to have the data power on the symbol of the first CRS and supplement CRS and the ratio without the data power on the symbol of the first CRS and supplement CRS, and UE correctly demodulates the information carried on resource block using the channel estimation results that the first CRS and supplement CRS are obtained according to the power control information.

Embodiment 4

The embodiment of the present invention proposes the transmission method for corresponding to a kind of reference signal of the embodiment of the present invention 2, and the method shown can be executed by receiving device corresponding with the base station corresponded in the embodiment of the present invention 2.

Referring to Fig. 10, Figure 10 is one embodiment figure of the transmission method of reference signal provided in an embodiment of the present invention, as shown in Figure 10, the embodiment of the invention provides a kind of transmission methods of reference signal, it may include following steps:

1001, UE receives the resource block for carrying the first DM-RS of base station transmission.

Wherein, resource block includes data portion and reference signal part for carrying the information transmitted between base station and UE, information, and reference signal part includes the first DM-RS, and the antenna port of the first DM-RS is UE special demodulating antenna port.

It should be noted that, data portion in information includes control information and/or data information, these information specifically carry on the physical channel, the physical channel includes following one or combination: PDCCH, PDSCH, EPDCCH, PCFICH, PHICH, or function is identical in some new standards, but the control channel introduced in the channel that title is different, such as short TTI transmission or data channel etc., certainly, the control information for dispatching the resource block can not also be carried on the resource block.UE can determine the time domain length of the resource block by the control information or predefined mode of the demodulation dispatching resource block.UE can be used the first DM-RS and demodulate to the information carried on the resource block.In addition, a kind of more special situation is that data portion in information does not include any information, i.e. the information of resource block carrying only includes reference signal part.In this case, UE can execute following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation etc. according to the first DM-RS.

It is understood that in embodiments of the present invention, UE, which obtains the method for the antenna port information of the first DM-RS and base station described in the embodiment of the present invention 2, keeps the UE acquisition method of antenna port information of the first DM-RS identical, and details are not described herein again.

It is understood that in embodiments of the present invention, UE determine the time domain length of resource block and method and the base station described in the embodiment of the present invention 2 of frequency domain length make UE determine resource block time domain length and frequency domain length method it is identical, details are not described herein again.

It is understood that in embodiments of the present invention, base station is that resource block configures the method for the first DM-RS and base station described in the embodiment of the present invention 2 is that the resource block configuration method of the first DM-RS is identical, and details are not described herein again.

Optionally, base station can configure the first CRS for resource block.In embodiments of the present invention, base station is that resource block configures the method for the first CRS and base station described in the embodiment of the present invention 2 is that the resource block configuration method of the first CRS is identical, and details are not described herein again.

Optionally, base station can configure the first CRS and the 2nd CRS for resource block.In embodiments of the present invention, the method that base station is resource block configuration the first CRS and the 2nd CRS is that the resource block configuration method of the first CRS and the 2nd CRS is identical with base station described in the embodiment of the present invention 2, and details are not described herein again.

1002, UE is demodulated according to data portion of the first DM-RS to the information carried on the resource block.

In the specific implementation process, which can also be performed following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation etc. according to the first DM-RS.

Optionally, during specific implementation step 1002, the information carried on the resource block includes that control information and/or data information, UE can combine the first DM-RS and demodulate to the information carried on the resource block.

Optionally, when also carrying the first CRS and/or two CRS on the resource block, UE can be used for combining the first CRS and/or the 2nd CRS and execute following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation, RRM measurement, CSI measurement etc..

Embodiment 5

The transmission method of the reference signal of the embodiment of the present invention is described above, the base station of the embodiment of the present invention is introduced below, please refer to Figure 11, Figure 11 is one embodiment figure of the base station of the embodiment of the present invention, and as shown in figure 11, the embodiment of the invention provides a kind of base stations, support short TTI transmission in the base station, multiple UE for supporting short TTI transmission can be serviced, multiple UE for not supporting short TTI transmission, the base station can be also serviced can include:

First configuration module 1101, for configuring the first CRS for resource block, the antenna port of the first CRS is cell-specific antenna port, and for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

Wherein, which can notify in several ways to UE, and specific advice method is similar with the related content in the explanation for step 301 in embodiment illustrated in fig. 3, and details are not described herein again.

Wherein, data portion includes control information and/or data information, and the explanation of the control information and data information is similar for relevant portion in the explanation of step 301 with embodiment illustrated in fig. 31, and details are not described herein again.

Wherein, the size of resource block can be configured according to the actual situation, and specific configuration process is similar for relevant portion in the explanation of step 301 with embodiment illustrated in fig. 31, and details are not described herein again.

In addition, the first configuration module 1101 is also used to configure supplement CRS for resource block, the day of CRS is supplemented Line end mouth and the antenna port of the first CRS are identical or different；

Wherein, supplementing CRS may include three kinds of different situations, i.e. supplement CRS is the 2nd CRS, supplement CRS is the 3rd CRS, and supplement CRS is the 2nd CRS and the 3rd CRS totally three kinds of situations, the 2nd CRS and the first CRS antenna port having the same, and the antenna port of the antenna port and the first CRS and the 2nd CRS of the 3rd CRS is all different, when supplementing CRS is two CRS, the first configuration module 1101 can configure the 2nd CRS in resource block for the antenna port of at least one the first CRS；When supplementing CRS is three CRS, first configuration module 1101 can determine the time domain length and/or frequency domain length of resource block first, and determine the antenna port of the 3rd CRS of resource block, the 3rd CRS is then configured according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS；Supplement CRS includes that the situation of the 2nd CRS and the 3rd CRS is to merge two kinds of situations.

Wherein, the configuration process of specific three kinds of situations in embodiment illustrated in fig. 3 be directed to step 302 explanation in for the explanation of situation one, situation two and situation three it is similar, wherein, the corresponding supplement CRS of situation one is the 2nd CRS, the corresponding supplement CRS of situation two is the 3rd CRS, the corresponding supplement CRS of situation three is the 2nd CRS and the 3rd CRS, and details are not described herein again.

Furthermore, first configuration module 1101 can also be used to be determined the time domain length and frequency domain length of resource block, it wherein, is M time-domain symbol for the time domain length that the determination of the time domain length of resource block may include: determining resource block, M is the integer not less than 1 and no more than 14；The time domain length for determining resource block is N number of subframe, and N is the integer not less than 1 and no more than 10；It is determined among this two ways using one or two kinds of joints, determination for the frequency domain length of resource block can include: the frequency domain length for determining resource block is P PRB or RBG or RE or REG, P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.Specifically to the determination process of the time domain length of resource block and frequency domain length be directed to similar about the time domain length of resource block and the determination of frequency domain length in the explanation of situation two in the explanation of step 302 in embodiment 1 shown in Fig. 3, details are not described herein again.

Wherein, when determining the time domain length of resource block by way of being M time-domain symbol in the time domain length determining resource block, first configuration module 1101 also particularly useful for:

Or,

As can be seen that in the time domain length difference of resource block, the first configuration module 1101 is different for the quantity of the RE of the antenna port configuration of the 3rd CRS of each of the antenna port of at least one the 3rd CRS in every PRB.

The base station further includes the first transceiver module 1102, is used for transmission resource block, and the reference signal part of the information of resource block carrying includes the first CRS and supplement CRS.

It should be noted that the first configuration module 1101 is for realizing content involved in step 301 in embodiment illustrated in fig. 31 and step 302, the first transceiver module 1102 is for realizing content involved in the step 303 in embodiment illustrated in fig. 31.

It can be understood that, first configuration module 1101 is when configuring a CRS for resource block, the antenna port information of the first CRS can be determined first, after the first configuration module 1101 configures the first CRS, it can be further resource block configuration supplement CRS, and since supplement CRS includes three types, that is the 2nd CRS, 3rd CRS and the 2nd CRS and the 3rd CRS, supplementing the 2nd CRS is to keep shorter again due to the mode of short TTI to be delayed so that the first CRS is poor for the demodulation performance of certain data, 3rd CRS is due to supporting the UE expense of 4 antenna ports and DMRS very big, the expense of reference signal in each subframe can be reduced by the 3rd CRS of reasonable disposition, after supplement CRS is completed in configuration, the first transceiver module 11 can be passed through 02 sends configured resource block, in order to which UE can receive the resource block, and combines the first CRS and supplements CRS and demodulate to the data portion of the information of resource block.

Embodiment 6

The transmission method of the reference signal of the embodiment of the present invention is described above, another implementation of the base station of the embodiment of the present invention is introduced below, please refer to Figure 12, Figure 12 is one embodiment figure of the base station of the embodiment of the present invention, and as shown in figure 12, the embodiment of the invention provides a kind of base stations, support short TTI transmission in the base station, multiple UE for supporting short TTI transmission can be serviced, multiple UE for not supporting short TTI transmission, the base station can be also serviced can include:

Second configuration module 1201, for determining the time domain length and/or frequency domain length of resource block, for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

Wherein, second configuration module 1201 can also be used to be determined the time domain length and frequency domain length of resource block, it wherein, is M time-domain symbol for the time domain length that the determination of the time domain length of resource block may include: determining resource block, M is the integer not less than 1 and no more than 14；The time domain length for determining resource block is N number of subframe, and N is the integer not less than 1 and no more than 10；It is determined among this two ways using one or two kinds of joints, determination for the frequency domain length of resource block can include: the frequency domain length for determining resource block is P PRB or RBG or RE or REG, P is the integer not less than 1 and no more than Q, and Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.Specifically to the determination process of the time domain length of resource block and frequency domain length be directed to similar about the time domain length of resource block and the determination of frequency domain length in the explanation of situation two in the explanation of step 302 in embodiment 1 shown in Fig. 3, details are not described herein again.

In addition, the second configuration module 1201 is also used to configure the first DM-RS for resource block, the antenna port of the first DM-RS is UE special demodulating antenna port；

Wherein, second configuration module 1201 can also configure Y RE for the antenna port of the first DM-RS of each of the antenna port of at least one the first DM-RS in each PRB in resource block, wherein, Y is the at most supported antenna port number of the first DM-RS, first DM-RS of different antennae port uses different reference signal sequences, and the first DM-RS of different antennae port occupies identical running time-frequency resource.

It should be noted that the time domain length of specific resource block and the determination process of frequency domain length are similar for the relevant portion of explanation of step 701 with embodiment illustrated in fig. 7, details are not described herein again.

The base station further includes the second transceiver module 1202, is used for transmission resource block, and the reference signal part of the information of resource block carrying includes the first DM-RS.

In addition, the second configuration module 1201 can also configure the first CRS to the resource block configured with the first DM-RS, the second transceiver module 1202 is specifically used for transmission resource block at this time, and the reference signal part of the resource block includes the first DM-RS and the first CRS；Second configuration module 1201 can also be reconfigured the 2nd CRS to the resource block configured with the first DM-RS and the first CRS, the second transceiver module 1202 is specifically used for transmission resource block at this time, and the reference signal part of the resource block includes the first DM-RS, the first CRS and the 2nd CRS.The configuration process of specific first CRS and the 2nd CRS is similar with the relevant configuration process being directed in the explanation of step 702 in embodiment 2 shown in Fig. 7, and details are not described herein again.

It can be understood that, since short TTI also will affect the first CRS simultaneously, in order to keep shorter delay, so that some data portions on resource block are deteriorated by the demodulation performance of the demodulation of the first CRS, therefore it needs to be laid out (layout of existing CRS) to the first CRS and be adjusted, second configuration module 1201, which can be used, supplements the 2nd CRS in resource block to improve demodulation performance, so that the poor data portion of demodulation performance can combine the first CRS and the 2nd CRS demodulation on resource block, for details, reference can be made to the relevant portions being directed in the explanation of step 702 in embodiment 2 shown in Fig. 7, details are not described herein again.

It should be noted that the second configuration module 1201 is for realizing content involved in step 701 in embodiment illustrated in fig. 72 and step 702, the first transceiver module 1202 is for realizing content involved in the step 703 in embodiment illustrated in fig. 72.

It can be understood that, due to using short TTI mode transmission resource block, if the data portion on resource block is still using the layout of original DMRS (i.e. existing DMRS layout), it then will appear some situations without DMRS of resource block, therefore it needs to increase new DMRS and makes that all there is DMRS on all resource blocks, specifically arrangement can be used a variety of, as long as all resource blocks is made all to have DMRS；In embodiments of the present invention, second configuration module 1201 is before configuring the first DM-RS for resource block, the time domain length and frequency domain length of resource block can be determined first, it then carries out according to the time domain length and frequency domain length of resource block the first DM-RS of corresponding configuration, so that all having enough DMRS in all resource blocks.

Embodiment 7

The transmission method of the reference signal of the embodiment of the present invention is described above, the base station of the embodiment of the present invention is introduced below, please refer to Figure 13, Figure 13 is one embodiment figure of the user equipment of the embodiment of the present invention, as shown in figure 13, the embodiment of the invention provides a kind of user equipmenies, it may include:

Third transceiver module 1301, for receiving the resource block for carrying the first CRS and supplementing CRS of base station transmission, wherein, resource block is for carrying the information transmitted between base station and UE, information includes data portion and reference signal part, reference signal part includes the first CRS and supplements CRS, and the antenna port of the first CRS is cell-specific antenna port, and the antenna port for supplementing the antenna port and the first CRS of CRS is identical or different；

Wherein, supplement CRS includes the 2nd CRS and/or the 3rd CRS, and the antenna port of the 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS.

It can be understood that, the type of supplement CRS in the received resource block of third transceiver module 1301 can be divided into three kinds of situations, that is supplement CRS is the 2nd CRS, supplement CRS is the 3rd CRS or supplement CRS is the 2nd CRS and the 3rd CRS, and the configuration process of the CRS of this three kinds of situations can correspond in embodiment illustrated in fig. 31 three kinds of situations that supplement CRS is directed in the explanation of step 302.

The user equipment further includes the first demodulation module 1302, for being demodulated according to the first CRS and supplement CRS to the data portion of the information carried on resource block.Wherein, specific demodulating process is similar with the demodulating process in the explanation of the step 902 in embodiment illustrated in fig. 9 about data portion, and details are not described herein again.

It is understood that

Wherein, data portion may include control information and data information, and the control information and data information is similar for relevant portion in the explanation of step 301 with embodiment illustrated in fig. 31, and details are not described herein again.

As optional, in the present embodiment, user equipment may also include that

First determining module 1303, for determining that the time domain length of resource block is M time-domain symbol, M is the integer not less than 1 and no more than 14；

And/or

First determining module 1303 is also used to:

It can be seen that, the time domain length that determining resource block can be used in first determining module 1303 is M time-domain symbol, or determine that the time domain length of resource block is N number of subframe, or the two is combined and is determined to the time domain length of resource block, specific determination process with for similar about the time domain length of resource block and the determination of frequency domain length in the explanation of situation two, details are not described herein again in the explanation of step 302 in embodiment 1 shown in Fig. 3.

Furthermore, it is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling that third transceiver module 1301, which is also used to receive the port information of the antenna port for determining the 3rd CRS of base station transmission and/or the signaling of power contorl parameters, signaling,；At this point, the first determining module 1303 is also For determining the antenna port and/or power contorl parameters of the 3rd CRS according to signaling.Wherein, when the port information and/or power contorl parameters of the antenna port of received 3rd CRS of third transceiver module 1301, the signaling that the received signaling of third transceiver module 1301 can be same type is also possible to different types of signaling, i.e. comprising the 3rd CRS antenna port port information signaling and the signaling comprising power contorl parameters can be it is identical be also possible to it is different, if the signaling of same type, independent signaling then can be used to indicate respectively the antenna port number of the 3rd CRS and the power contorl parameters of the 3rd CRS, it can also simultaneously include the antenna port number of the 3rd CRS and the power contorl parameters of the 3rd CRS in same signaling.The port information of the antenna port of specific 3rd CRS and/or the treatment process of power contorl parameters are similar with the port information and/or power contorl parameters in the explanation of the step 901 in embodiment illustrated in fig. 93 about the antenna port of the 3rd CRS, and details are not described herein again.

It should be noted that third transceiver module 1301 is for realizing content involved in step 901 in embodiment illustrated in fig. 93, the first demodulation module 1302 is for realizing content involved in the step 902 in embodiment illustrated in fig. 93.

It can be understood that, third transceiver module 1301 is after the resource block for receiving comprising the first CRS and supplementing CRS, the data portion of the information of resource block can be demodulated by the first CRS and supplement CRS by the first demodulation module 1302, since the first CRS and supplement CRS are that base station is configured according to the time domain length and frequency domain length of resource block, therefore the first CRS and supplement CRS can guarantee that the data portion in resource block can be by the first CRS and supplement CRS demodulation, and have preferable demodulation performance.

Embodiment 8

The transmission method of the reference signal of the embodiment of the present invention is described above, the base station of the embodiment of the present invention is introduced below, please refer to Figure 14, Figure 14 is one embodiment figure of the base station of the embodiment of the present invention, as shown in figure 14, the embodiment of the invention provides a kind of user equipmenies, it may include:

4th transceiver module 1401, for receiving the resource block of base station transmission, wherein, resource block is for carrying the information transmitted between base station and UE, information includes data portion and reference signal part, reference signal part includes the first DM-RS, and the antenna port of the first DM-RS is UE special demodulating antenna port；

Wherein, the 4th transceiver module 1401, which obtains the method for the antenna port information of the first DM-RS and base station described in embodiment illustrated in fig. 72, keeps the UE acquisition method of antenna port information of the first DM-RS similar, and details are not described herein again.

Wherein, in the received resource block of user equipment in addition to the first DM-RS, also there is the first CRS, the first CRS to be configured by base station, the first CRS configuration process is that the resource block configuration process of the first CRS is similar with base station in embodiment illustrated in fig. 72, and details are not described herein again.

Wherein, in the received resource block of user equipment in addition to the first DM-RS and the first CRS, it may also include including the 2nd CRS, the first CRS for including in resource block and the 2nd CRS are configured by base station, first CRS and the 2nd CRS configuration process are similar for the resource block configuration process of the first CRS and the 2nd CRS with base station in embodiment illustrated in fig. 72, and details are not described herein again.In addition, the first CRS can be the CRS transmitted in normal sub-frames, it is also possible to the CRS transmitted in MBSFN sub-frame.

Second demodulation module 1402, for being demodulated according to the first DM-RS to the data portion of the information carried on resource block.

Wherein, when resource block only includes a DM-RS, second demodulation module 1402 demodulates the data portion of the information carried on resource block according to the first DM-RS, when including simultaneously a first DM-RS and CRS in resource block, second demodulation module 1402 demodulates the data portion of the information carried on resource block according to the first DM-RS, executes following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation, RRM measurement, CSI measurement etc. according to the first CRS；When including simultaneously the first DM-RS, the first CRS and two CRS in resource block, second demodulation module 1402 demodulates the data portion of the information carried on resource block according to the first DM-RS, and specific second demodulation module 1402 can combine the first CRS and/or the 2nd CRS and execute following at least one operation: AGC adjustment, Time and Frequency Synchronization, channel characteristic estimation, RRM measurement, CSI measurement etc..

It should be noted that, the information carried on the resource block includes control information and/or data information, the information specifically carries on the physical channel, the physical channel includes following one or combination: PDCCH, PDSCH, EPDCCH, PCFICH, PHICH, and the second demodulation module 1402 can combine the first DM-RS and demodulate to the information carried on the resource block.

As optional, the user equipment further include:

Second determining module 1403, for determining that the time domain length of resource block is M time-domain symbol, M is the integer not less than 1 and no more than 14；

And/or

Second determining module 1403 is also used to:

It can be seen that, the time domain length that determining resource block can be used in second determining module 1403 is M time-domain symbol, or determine that the time domain length of resource block is N number of subframe, or the two is combined and is determined to the time domain length of resource block, specific determination process with for similar about the time domain length of resource block and the determination of frequency domain length in the explanation of situation two, details are not described herein again in the explanation of step 702 in embodiment 2 shown in Fig. 7.

It should be noted that the 4th transceiver module 1401 is for realizing content involved in step 1001 in embodiment illustrated in fig. 10 4, the second demodulation module 1402 is for realizing content involved in the step 1002 in embodiment illustrated in fig. 10 4.

It can be understood that, 4th transceiver module 1401 is after receiving the resource block comprising the first DM-RS, the data portion of the information of resource block can be demodulated by the first DM-RS by the second demodulation module 1402, since the first DM-RS is that base station is configured according to the time domain length and frequency domain length of resource block, therefore the first DM-RS can guarantee that the data portion in resource block can be demodulated by the first DM-RS, and have preferable demodulation performance.

Embodiment 9

Above in the embodiment of the present invention base station and user equipment be described, the communication system of the base station and user equipment is used to be introduced in the embodiment of the present invention below, please refer to Figure 15, Figure 15 is one embodiment figure of the communication system of the embodiment of the present invention, as shown in figure 15, the communication system can include:

Base station 1501, for configuring the first CRS for resource block, the antenna port of the first CRS is cell-specific antenna port, and for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

UE1502, for receiving the resource block of base station transmission；

It can be understood that, base station 1501 in the present embodiment is identical as the base station in embodiment illustrated in fig. 11 5, i.e. the base station 1501 is able to achieve the step 301 in embodiment illustrated in fig. 31 to step 303, UE1502 in the present embodiment is identical as the UE in embodiment illustrated in fig. 13 7, i.e. the UE is able to achieve step 901 and step 902 in embodiment illustrated in fig. 93, i.e. base station 1501 also issues the process for configuring resource block and down distributing resource block comprising the base station in the embodiment illustrated in fig. 11 5, three kinds of situations that the part supplement CRS in the resource block issued includes are similar with three kinds of situations that the base station in embodiment illustrated in fig. 11 5 includes, UE1502 receives resource block and the data portion according to the first CRS in resource block with supplement CRS to the information of resource block Divide the demodulating process carried out, it is similar with the reception resource block of the UE in embodiment illustrated in fig. 13 7 and demodulating process, it repeats no more herein.

Embodiment 10

Above in the embodiment of the present invention base station and user equipment be described, another communication system of the base station and user equipment is used to be introduced in the embodiment of the present invention below, please refer to Figure 16, Figure 16 is one embodiment figure of the communication system of the embodiment of the present invention, as shown in figure 16, the communication system can include:

Base station 1601, for determining the time domain length and/or frequency domain length of resource block, for resource block for carrying the information transmitted between base station and UE, information includes data portion and reference signal part；

UE1602, for receiving resource block；

It can be understood that, base station 1601 in the present embodiment is identical as the base station in embodiment illustrated in fig. 12 6, UE1602 in the present embodiment is identical as the UE in embodiment illustrated in fig. 14 8, i.e. the UE is able to achieve step 1001 and step 1002 in embodiment illustrated in fig. 10 4, the base station 1601 is able to achieve the step 701 in embodiment illustrated in fig. 72 to step 703, i.e. base station 1601 also includes the embodiment illustrated in fig. 12 Base station in 6 issues the process of configuration resource block and down distributing resource block, three kinds of situations of the reference signal in resource block issued are similar with three kinds of situations that the base station in embodiment illustrated in fig. 12 6 includes, three kinds of situations are respectively that reference signal is the first DM-RS, reference signal is the first DM-RS and the first CRS, and reference signal is the first DM-RS, first CRS and the 2nd CRS, UE1602 receives resource block and according to the first DM-RS or the first DM-RS and the first CRS in resource block, again or the first DM-RS, the demodulating process that first CRS and the 2nd CRS carries out the data portion of the information of resource block, it is similar with the reception resource block and demodulating process of the UE in embodiment illustrated in fig. 13 7, it repeats no more herein.

The structure of base station in the embodiment of the present invention is described below, please refer to Figure 17, Figure 17 is one embodiment figure of the base station of the embodiment of the present invention, wherein, base station 17 may include at least one processor 1701 being connected with bus, at least one receiver 1702 and at least one transmitter 1703, the present embodiments relate to base station can have than more or fewer components illustrated in fig. 17, two or more components can be combined, or it can have different components and configure or set up, all parts can be in the hardware including one or more signal processings and/or specific integrated circuit, the combination of software or hardware and software is realized.

Specifically, for the embodiment 5 shown in Figure 11, the processor 1701 is able to achieve the function of the first configuration module 1101 in embodiment illustrated in fig. 11 5, and the receiver 1702 and the transmitter 1703 combine the function for the first transceiver module 1102 being able to achieve in embodiment illustrated in fig. 11 5；

For Figure 12, which is able to achieve the function of the secondth configuration module 1201 in embodiment illustrated in fig. 12 6, which combines the function for the second transceiver module 1202 being able to achieve in embodiment illustrated in fig. 12 with the transmitter 1703.

The structure of user equipment in the embodiment of the present invention is described below, please refer to Figure 18, Figure 18 is one embodiment figure of the user equipment of the embodiment of the present invention, wherein, user equipment 18 may include at least one processor 1801 being connected with bus, at least one receiver 1802 and at least one transmitter 1803, the present embodiments relate to base station can have than more or fewer components illustrated in fig. 18, two or more components can be combined, or it can have different components and configure or set up, all parts can be in the hardware including one or more signal processings and/or specific integrated circuit, the combination of software or hardware and software is realized.

Specifically, the processor 1801 is able to achieve the function of the first demodulation module 1302 and the first determining module 1303 in embodiment illustrated in fig. 13, the receiver 1802 for the embodiment shown in Figure 13 The function for the third transceiver module 1301 being able to achieve in embodiment illustrated in fig. 13 is combined with the transmitter 1803.

For Figure 14, the processor 1801 is able to achieve the function of the second demodulation module 1402 and the second determining module 1403 in embodiment illustrated in fig. 14, and the receiver 1802 and the transmitter 1803 combine the function for the 4th transceiver module 1401 being able to achieve in embodiment illustrated in fig. 13.In several embodiments provided herein, it should be understood that disclosed system, device and method may be implemented in other ways.Such as, the apparatus embodiments described above are merely exemplary, such as, the division of the unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, and component shown as a unit may or may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.

In addition, the functional units in various embodiments of the present invention may be integrated into one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a computer readable storage medium.Based on this understanding, substantially all or part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products technical solution of the present invention in other words, the computer software product is stored in a storage medium, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.

The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should manage Solution: it is still possible to modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And these are modified or replaceed, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims

A kind of transmission method of reference signal, it is characterized in that, include: base station be resource block configure the first public reference signal CRS, the antenna port of first CRS is cell-specific antenna port, for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part；

The base station is resource block configuration supplement CRS, and the antenna port of the antenna port and the first CRS of the supplement CRS is identical or different；

The resource block is transmitted in the base station, and the reference signal part of the information of the resource block carrying includes the first CRS and supplement CRS.
The method according to claim 1, wherein the supplement CRS includes the 2nd CRS, the antenna port of the supplement CRS is identical as the antenna port of the first CRS；

The base station is that resource block configuration supplement CRS includes:

The base station configures the 2nd CRS in the resource block for the antenna port of at least one the first CRS.
According to the method described in claim 2, it is characterized in that, the supplement CRS further includes the 3rd CRS, the antenna port that the antenna port of the supplement CRS is the 3rd CRS, the antenna port of the 3rd CRS is identical as the antenna port of the first CRS；

The base station is resource block configuration supplement CRS further include:

The base station determines the time domain length and/or frequency domain length of the resource block；

The base station determines the antenna port of the 3rd CRS of the resource block；

The base station configures the 3rd CRS according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in the resource block.
The method according to claim 1, wherein the supplement CRS includes the 3rd CRS, the antenna port that the antenna port of the supplement CRS is the 3rd CRS, the antenna port of the 3rd CRS is identical as the antenna port of the first CRS；

The base station is that resource block configuration supplement CRS includes:

The base station determines the time domain length and/or frequency domain length of the resource block；

The base station determines the antenna port of the 3rd CRS of the resource block；

The base station in the resource block according to time domain length and/or frequency domain length be at least one described the The antenna port of three CRS configures the 3rd CRS.
The method according to claim 3 or 4, which is characterized in that the base station determines in the time domain length and/or frequency domain length of the resource block that the base station determines that the time domain length of the resource block includes:

The base station determines that the time domain length of the resource block is M time-domain symbol, and the M is the integer not less than 1 and no more than 14；

And/or

The base station determines that the time domain length of the resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

The base station determines that the frequency domain length of the resource block includes:

The base station determines that the frequency domain length of the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P is the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
According to the method for claim 5, it is characterized in that, the base station determines that the time domain length of the resource block is M time-domain symbol, when the M is the integer not less than 1 and no more than 3, the base station configures the 3rd CRS according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in the resource block, comprising:

The base station is that the antenna port of the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 1 RE in each PRB in the resource block；

Or,

When the M is the integer not less than 4 and no more than 7, the base station configures the 3rd CRS according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in the resource block, comprising:

The base station is that the antenna port of the 3rd CRS of each of the antenna port of at least one the 3rd CRS configures 2 RE in each PRB in the resource block；

Or,

When the M is the integer not less than 8 and no more than 14, the base station configures the 3rd CRS according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in the resource block, comprising:

The base station is at least one described described 3rd CRS in each PRB in the resource block The antenna port of the 3rd CRS of each of antenna port configures 4 RE.
Method according to any one of claim 3 to 6, which is characterized in that the method also includes:

The base station sends the port information and/or power contorl parameters for determining the antenna port of the 3rd CRS by signaling, and the signaling is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling.
A kind of transmission method of reference signal characterized by comprising

Base station determines the time domain length and/or frequency domain length of resource block, and for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part；

The base station is that the antenna port that the resource block configures the first demodulated reference signal DM-RS, the first DM-RS is UE special demodulating antenna port；

The resource block is transmitted in the base station, and the reference signal part of the information of the resource block carrying includes the first DM-RS.
According to the method described in claim 8, the base station determines that the time domain length of resource block includes: it is characterized in that, the base station determines in the time domain length and/or frequency domain length of resource block

The base station determines that the time domain length of resource block is M time-domain symbol, and the M is the integer not less than 1 and no more than 14；

And/or

The base station determines that the time domain length of resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

The base station determines that the frequency domain length of resource block includes:

The base station determines that the frequency domain length of resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P is not less than 1 and to be not more than the integer of Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
Method according to claim 8 or claim 9, which is characterized in that the base station is that the resource block configures the first DM-RS, comprising:

The base station configures Y RE in each PRB in the resource block for the antenna port of the first DM-RS of each of the antenna port of at least one the first DM-RS, wherein, Y is the at most supported antenna port number of the first DM-RS, and the first DM-RS of different antennae port is believed using different references First DM-RS of number sequence, different antennae port occupies identical running time-frequency resource.
The method according to any one of claim 8 to 10, which is characterized in that the method also includes:

The base station is that the antenna port that the resource block configures the first public reference signal CRS, the first CRS is cell-specific antenna port；

The resource block is transmitted in the base station, and the reference signal part of the resource block includes that the first DM-RS includes:

The resource block is transmitted in the base station, and the reference signal part of the resource block includes the first DM-RS and the first CRS.
According to the method for claim 11, which is characterized in that the method also includes:

The base station is that the resource block configures the 2nd CRS according to the antenna port of the first CRS described at least one；

The resource block is transmitted in the base station, and the reference signal part of the resource block includes the first DM-RS and the first CRS includes:

The resource block is transmitted in the base station, and the reference signal part of the resource block includes the first DM-RS, the first CRS and the 2nd CRS.
A kind of transmission method of reference signal characterized by comprising

User equipment (UE) receives the resource block for carrying the first public reference signal CRS and supplementing CRS of base station transmission, wherein, the resource block is for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part, the reference signal part includes the first CRS and supplement CRS, the antenna port of first CRS is cell-specific antenna port, and the antenna port of the antenna port and the first CRS of the supplement CRS is identical or different；

The UE demodulates the data portion of the information carried on the resource block according to the first CRS and the supplement CRS.
According to the method for claim 13, it is characterized by: the supplement CRS includes the 2nd CRS and/or the 3rd CRS, the antenna port of 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS.
Method described in 3 or 14 according to claim 1, which is characterized in that the method also includes,

The UE determines the time domain length and/or frequency domain length of the resource block, wherein the UE is determined The time domain length of the resource block includes:

The UE determines that the time domain length of the resource block is M time-domain symbol, and the M is the integer not less than 1 and no more than 14；

And/or

The base station determines that the time domain length of resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

The UE determines that the frequency domain length of the resource block includes:

The UE determines that the frequency domain length of the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P is the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
Method according to claim 14 or 15, which is characterized in that the method also includes:

It is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling that the UE, which receives the port information for the antenna port for determining the 3rd CRS that the base station is sent and/or the signaling of power contorl parameters, the signaling,；

The UE determines the antenna port and/or the power contorl parameters of the 3rd CRS according to the signaling.
A kind of transmission method of reference signal characterized by comprising

User equipment (UE) receives the resource block of base station transmission, wherein, the resource block is for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part, the reference signal part includes the first DM-RS, and the antenna port of the first DM-RS is UE special demodulating antenna port；

The UE demodulates the data portion of the information carried on the resource block according to the first DM-RS.
According to the method for claim 17, which is characterized in that the method also includes the UE determines the time domain length and/or frequency domain length of the resource block, wherein the UE determines that the time domain length of the resource block includes:

The UE determines that the time domain length of the resource block is M time-domain symbol, and the M is the integer not less than 1 and no more than 14；

And/or

The base station determines that the time domain length of resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

The UE determines that the frequency domain length of the resource block includes:

The UE determines that the frequency domain length of the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P is the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
Method described in 7 or 18 according to claim 1, which is characterized in that the method also includes:

The reference signal part further includes the first CRS, also carries the first CRS on the resource block；

The UE carries out demodulation to the data portion of the information carried on the resource block according to the first DM-RS

The UE demodulates the data portion of the information carried on the resource block according to the first DM-RS and the first CRS.
Method described in 7 or 18 according to claim 1, which is characterized in that the method also includes:

The reference signal part further includes the first CRS and the 2nd CRS, also carries the first CRS and the 2nd CRS on the resource block；

The UE carries out demodulation to the information carried on the resource block according to the first DM-RS

The UE demodulates the data portion of the information carried on the resource block according to the first DM-RS, the first CRS and the 2nd CRS.
A kind of base station characterized by comprising

First configuration module, for configuring the first public reference signal CRS for resource block, the antenna port of first CRS is cell-specific antenna port, and for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part；

First configuration module is also used to configure supplement CRS for the resource block, and the antenna port of the antenna port and the first CRS of the supplement CRS is identical or different；

First transceiver module is used for transmission the resource block, and the reference signal part of the information of the resource block carrying includes the first CRS and supplement CRS.
Base station according to claim 21, which is characterized in that the supplement CRS includes the 2nd CRS, and the antenna port of the supplement CRS is identical as the antenna port of the first CRS；

First configuration module is specifically used for:

The 2nd CRS is configured in the resource block for the antenna port of at least one the first CRS.
Base station according to claim 22, which is characterized in that the supplement CRS further includes the 3rd CRS, the antenna port that the antenna port of the supplement CRS is the 3rd CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS；

First configuration module is specifically used for:

Determine the time domain length and/or frequency domain length of the resource block；

Determine the antenna port of the 3rd CRS of the resource block；

The 3rd CRS is configured according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in the resource block.
Base station according to claim 21, which is characterized in that the supplement CRS includes the 3rd CRS, the antenna port that the antenna port of the supplement CRS is the 3rd CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS；

First configuration module is specifically used for:

Determine the time domain length and/or frequency domain length of the resource block；

Determine the antenna port of the 3rd CRS of the resource block；

The 3rd CRS is configured according to the antenna port that time domain length and/or frequency domain length are at least one the 3rd CRS in the resource block.
The base station according to claim 23 or 24, which is characterized in that first configuration module is specifically used for:

The time domain length for determining the resource block is M time-domain symbol, and the M is the integer not less than 1 and no more than 14；

And/or

The time domain length for determining the resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

First configuration module also particularly useful for:

The frequency domain length for determining the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P are the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
Base station according to claim 25, which is characterized in that the time domain length of the resource block For M time-domain symbol, first configuration module is specifically used for:

The antenna port for being the 3rd CRS of each of the antenna port of at least one the 3rd CRS when the M is the integer not less than 1 and no more than 3, in each PRB in the resource block configures 1 RE；

Or,

The antenna port for being the 3rd CRS of each of the antenna port of at least one the 3rd CRS when the M is the integer not less than 4 and no more than 7, in each PRB in the resource block configures 2 RE；

Or,

The antenna port for being the 3rd CRS of each of the antenna port of at least one the 3rd CRS when the M is the integer not less than 8 and no more than 14, in each PRB in the resource block configures 4 RE.
The method according to any one of claim 23 to 26, which is characterized in that first transceiver module is also used to:

The port information and/or power contorl parameters for determining the antenna port of the 3rd CRS are sent by signaling, the signaling is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling.
A kind of base station characterized by comprising

Second configuration module, for determining the time domain length and/or frequency domain length of resource block, for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part；

It is UE special demodulating antenna port that second configuration module, which is also used to configure the antenna port of the first demodulated reference signal DM-RS, the first DM-RS for the resource block,；

Second transceiver module is used for transmission the resource block, and the reference signal part of the information of the resource block carrying includes the first DM-RS.
Base station according to claim 28, which is characterized in that second configuration module is specifically used for:

The time domain length for determining the resource block is M time-domain symbol, and the M is the integer not less than 1 and no more than 14；

And/or

The time domain length for determining the resource block is N number of subframe, and the N is the integer not less than 1 and no more than 10；

Second configuration module also particularly useful for:

The frequency domain length for determining the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P are the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
The base station according to claim 28 or 29, which is characterized in that the configuration module is specifically used for:

Antenna port in each PRB in the resource block for the first DM-RS of each of the antenna port of at least one the first DM-RS configures Y RE, wherein, Y is the at most supported antenna port number of the first DM-RS, first DM-RS of different antennae port uses different reference signal sequences, and the first DM-RS of different antennae port occupies identical running time-frequency resource.
The base station according to any one of claim 28 to 30, which is characterized in that second configuration module is also used to:

The antenna port that the first public reference signal CRS, the first CRS is configured for the resource block is cell-specific antenna port；

Second configuration module is specifically used for:

The resource block is transmitted, the reference signal part of the resource block includes the first DM-RS and the first CRS.
Base station according to claim 31, which is characterized in that second configuration module is also used to:

It is that the resource block configures the 2nd CRS according to the antenna port of the first CRS described at least one；

Second configuration module is specifically used for:

The resource block is transmitted, the reference signal part of the resource block includes the first DM-RS, the first CRS and the 2nd CRS.
A kind of user equipment characterized by comprising

Third transceiver module, for receiving the resource block for carrying the first public reference signal CRS and supplementing CRS of base station transmission, wherein the resource block is for carrying between the base station and user equipment (UE) The information of transmission, the information includes data portion and reference signal part, the reference signal part includes the first CRS and supplement CRS, the antenna port of first CRS is cell-specific antenna port, and the antenna port of the antenna port and the first CRS of the supplement CRS is identical or different；

First demodulation module, for being demodulated according to the first CRS and the supplement CRS to the data portion of the information carried on the resource block.
User equipment according to claim 33, it is characterized by: the supplement CRS includes the 2nd CRS and/or the 3rd CRS, the antenna port of 2nd CRS is identical as the antenna port of the first CRS, and the antenna port of the 3rd CRS is not identical as the antenna port of the first CRS.
The user equipment according to claim 33 or 34, which is characterized in that the user equipment further include:

First determining module, for determining that the time domain length of the resource block is M time-domain symbol, the M is the integer not less than 1 and no more than 14；

And/or

For determining that the time domain length of resource block is N number of subframe, the N is the integer not less than 1 and no more than 10；

First determining module is also used to:

The frequency domain length for determining the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P are the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
The user equipment according to claim 34 or 35, which is characterized in that the third transceiver module is also used to:

Receiving the port information for the antenna port for determining the 3rd CRS that the base station is sent and/or the signaling of power contorl parameters, the signaling is radio resource control RRC signaling or media access control MAC signaling or physical layer signaling；

First determining module is also used to:

The antenna port and/or the power contorl parameters of the 3rd CRS are determined according to the signaling.
A kind of user equipment characterized by comprising

4th transceiver module, for receiving the resource block of base station transmission, wherein for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal Part, the reference signal part include the first DM-RS, and the antenna port of the first DM-RS is UE special demodulating antenna port；

Second demodulation module, for being demodulated according to the first DM-RS to the data portion of the information carried on the resource block.
The base station according to claim 37, which is characterized in that the user equipment further include:

Second determining module, for determining that the time domain length of the resource block is M time-domain symbol, the M is the integer not less than 1 and no more than 14；

And/or

For determining that the time domain length of resource block is N number of subframe, the N is the integer not less than 1 and no more than 10；

Second determining module is also used to:

The frequency domain length for determining the resource block is P Physical Resource Block PRB or resource block group RBG or resource unit RE or resource unit group REG, the P are the integer not less than 1 and no more than Q, and the Q is the corresponding PRB number of system bandwidth or RBG number or RE number or REG number.
The user equipment according to claim 37 or 38, which is characterized in that the reference signal part further includes the first CRS, also carries the first CRS on the resource block；

Second demodulation module is specifically used for:

The data portion of the information carried on the resource block is demodulated according to the first DM-RS and the first CRS.
The user equipment according to claim 37 or 38, which is characterized in that the reference signal part further includes the first CRS and the 2nd CRS, also carries the first CRS and the 2nd CRS on the resource block；

Second demodulation module is specifically used for:

The data portion of the information carried on the resource block is demodulated according to the first DM-RS, the first CRS and the 2nd CRS.
A kind of communication system, which is characterized in that the system comprises:

Base station, for configuring the first public reference signal CRS for resource block, the antenna port of first CRS is cell-specific antenna port, and for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part；

It is also used to configure supplement CRS for the resource block, the antenna port of the antenna port and the first CRS of the supplement CRS is identical or different；

It is also used to transmit the resource block, the reference signal part of the information of the resource block includes the first CRS and supplement CRS；

UE, for receiving the resource block of the base station transmission；

It is also used to demodulate the data portion of the information carried on the resource block according to the first CRS and the supplement CRS.
A kind of communication system, which is characterized in that the system comprises:

Base station, for determining the time domain length and/or frequency domain length of resource block, for the resource block for carrying the information transmitted between the base station and user equipment (UE), the information includes data portion and reference signal part；

Being also used to configure the antenna port of the first demodulated reference signal DM-RS, the first DM-RS for the resource block is UE special demodulating antenna port；

It is also used to transmit the resource block, the reference signal part of the information of the resource block includes the first DM-RS；

UE, for receiving the resource block；

It is also used to demodulate the data portion of the information carried on the resource block according to the first DM-RS.