CN104144468A - Method and device for enhancing PBCH in NCT network - Google Patents

Abstract

The invention provides a method and device for enhancing a PBCH in an NCT network. The NCT network comprises an NCT base station and one or more sets of NCT UE served by the NCT base station. The method is executed through the NCT base station and comprises the steps that the PBCH is configured to contain a DMRS specific to the NCT base station, wherein the DMRS is used for all the NCT UE served by the NCT base station to demodulate the PBCH; the configured PBCH is broadcasted to all the NCT UE served by the NCT base station.

Description

For strengthen the method and apparatus of PBCH at NCT network

Technical field

The present invention generally relates to wireless communication field, more specifically, relates to the method and apparatus for strengthen Physical Broadcast Channel (PBCH) at new carrier type (NCT) network.

Background technology

In order to tackle the continuous growth of wireless mobile communications data service and the network capacity demand that the thing followed constantly raises, third generation partner program (3GPP) Long Term Evolution (LTE)/senior LTE (LTE-A) network is proposed to new higher requirement.NCT technology is the key character that 3GPP Release12 on the horizon (R12) and version afterwards will be supported, it can help to realize required physical layer change, and saves base station energy, improves the flexibility of deployment and in heterogeneous network (HetNet), reduce interference.NCT technology not only can be optimized Microcell (small cell), also can be used in macrocell (macro cell).

In NCT scheme, redefine frame structure, remove cell specific reference signal for demodulation (CRS) of transmitting in PBCH etc., to reduce expense.

The schematic diagram of exemplary NCT network design has been shown in Fig. 1.As shown in Figure 1, in cordless communication network 100, comprise a macro base station 110, it provides larger network coverage; One or more microcell base stations 122,124 with smaller power, it provides respectively relatively little network coverage; And the subscriber equipment (UE) 132,134 and 136 that communicates of one or more and corresponding macro base station or microcell base station.Wherein, as just example, the coverage of microcell base station 122 is included in the coverage of macro base station 110, and the coverage of the coverage of microcell base station 124 and macro base station 110 partly overlaps or be completely non-intersect.Macro base station 110, microcell base station 122 and 124 and corresponding UE may adopt NCT technology to dispose also may to adopt original carrier type to dispose.In this article, by the base station (comprising macro base station and microcell base station) in the network that adopts NCT technology to dispose, referred to as NCT base station, the UE in the network that employing NCT technology is disposed is referred to as NCT UE.In the NCT shown in Fig. 1 disposes, especially for the NCT base station that does not have macrocell to cover, NCT UE (for example UE134 and/or UE136) incites somebody to action separately and NCT base station (for example microcell base station 124) communicates.

In Cell searching or cell reselection process, UE should read Master Information Block (MIB) by PBCH.According to current standard, first UE obtains synchronous and Physical Cell Identifier symbol from the master sync signal from its serving BS (PSS) or auxiliary synchronous signal (SSS), and then the cell specific reference signal CRS based on comprising in PBCH carries out demodulation code to obtain MIB as demodulated reference signal (DMRS) to PBCH.

Summary of the invention

As mentioned above, in NCT scheme, no longer there is the CRS for demodulation.On the other hand, if specific UE reference signal is carried out to demodulation as DMRS to PBCH in NCT disposes, be difficult to for all demodulation PBCH of all UE.Result is, NCT UE is difficult to obtain mib information, and this will become NCT UE and obtain during Cell searching or cell reselection process an obstacle of MIB.

For above problem, the invention provides a kind of scheme that strengthens PBCH in NCT network.

According to an aspect of the present invention, provide a kind of for strengthen the method for PBCH at NCT network.This NCT network comprises one or more NCT UE that He GaiNCT base station, NCT base station is served.The method is carried out by NCT base station, comprising: configure this PBCH to comprise specific to the DMRS of this NCT base station, all NCT UE that wherein this DMRS serves for this NCT base station carry out demodulation to this PBCH; And all NCT UE that serve to this NCT base station broadcast the PBCH configuring.

According to another aspect of the present invention, provide a kind of for strengthen the device of PBCH at NCT network.This NCT network comprises one or more NCT UE that He GaiNCT base station, NCT base station is served.This device is realized and being realized in NCT base station or by NCT base station.This device comprises: PBCH dispensing unit, and it is configured to this PBCH to be configured to comprise the DMRS specific to this NCT base station, and all NCT UE that wherein this DMRS serves for this NCT base station carry out demodulation to this PBCH; And transmitting element, its all NCT UE that are configured to serve to this NCT base station broadcast the PBCH configuring.

According to another aspect of the present invention, provide a kind of for strengthen the method for PBCH at NCT network.This NCT network comprises one or more NCT UE that He GaiNCT base station, NCT base station is served.The method is carried out by NCT base station, comprising: configure public search space (CSS) configuration of this PBCH with instruction enhancement mode Physical Downlink Control Channel (ePDCCH); And all NCT UE that serve to this NCT base station broadcast the PBCH configuring.

According to another aspect of the present invention, provide a kind of for strengthen the device of PBCH at NCT network.This NCT network comprises one or more NCT UE that He GaiNCT base station, NCT base station is served.This device is realized and being realized in NCT base station or by NCT base station, comprising: PBCH dispensing unit, and it is configured to the CSS configuration that this PBCH is configured to indicate ePDCCH; And transmitting element, its all NCT UE that are configured to serve to this NCT base station broadcast the PBCH configuring.

Brief description of the drawings

After the description below with reference to the given the specific embodiment of the present invention of following accompanying drawing, will understand better the present invention, and other objects of the present invention, details, feature and advantage will become more apparent.In the accompanying drawings:

Fig. 1 shows the schematic diagram of exemplary NCT network design;

Fig. 2 shows the schematic diagram of the subframe structure of the PBCH of comprising of the prior art;

Fig. 3 show according to the embodiment of the present invention for strengthen the flow chart of a kind of method of PBCH at NCT network;

Fig. 4 shows the schematic diagram of the subframe structure that comprises the PBCH configuring according to the execution mode of Fig. 3;

Fig. 5 shows the schematic diagram comprising according to a kind of subframe structure of replacing the PBCH that execution mode configures;

Fig. 6 show according to the embodiment of the present invention for strengthen the flow chart of the another kind of method of PBCH at NCT network;

Fig. 7 A and Fig. 7 B show respectively according to the continuous dispensing of the CSS position of the execution mode of Fig. 7 and the staggered schematic diagram distributing;

Fig. 8 show according to the embodiment of the present invention for strengthen the block diagram of a kind of device of PBCH at NCT network; And

Fig. 9 show according to the embodiment of the present invention for strengthen the block diagram of the another kind of device of PBCH at NCT network.

Embodiment

Preferred implementation of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown preferred implementation of the present disclosure in accompanying drawing, but should be appreciated that, can realize the disclosure and the execution mode that should do not set forth limits here with various forms.On the contrary, it is in order to make the disclosure more thorough and complete that these execution modes are provided, and can be by the those skilled in the art that conveys to complete the scope of the present disclosure.

In NCT network, owing to no longer there being the CRS for demodulation, so PBCH almost can not be demodulated.In order to address this problem, consider in NCT network, to adopt new mechanism to process the demodulation problem of PBCH.

Fig. 2 shows the schematic diagram of the subframe structure of the PBCH of comprising of the prior art.As shown in Figure 2, PBCH is positioned at front 4 symbols of second time slot of a subframe, and 72 subcarriers at band occupancy middle part.In the example of Fig. 2, the length of a subframe is for example 10ms.The situation that regular circulation prefix (CP) in Frequency Division Duplexing (FDD) (FDD) frame structure defining in LTE system has been shown in Fig. 2, one of them radio frames comprises 10 subframes, and each subframe comprises 2 time slots, and each time slot comprises 7 symbols.But be appreciated that the present invention is not limited to the frame structure shown in Fig. 2, but can be applied to other frame structures arbitrarily, the such as frame structure in extended cyclic prefix situation or time division duplex (TDD) frame structure etc.

In NCT network design, can still use above-mentioned PBCH configuration of the prior art, that is, PBCH is still positioned at front 4 symbols of second time slot of a subframe, and takies 72 middle subcarriers.But it will be understood by those skilled in the art that the present invention is not limited thereto, PBCH position arrangement existing or exploitation in the future all will fall within the scope of the present invention arbitrarily.

Fig. 3 show according to the embodiment of the present invention for strengthen the flow chart of a kind of method 300 of PBCH at NCT network.Method 300 is for example carried out by the NCT base station in NCT network.In the following description, the NCT network being formed taking the microcell base station 124 in Fig. 1 and its two UE (UE134 and UE136) that served describes as example, wherein microcell base station 124 is called to NCT base station 124, two UE (UE134 and UE136) that it is served are called NCT UE134 and NCT UE136.Although it will be understood by those skilled in the art that herein and as example is described, the invention is not restricted to this taking independent NCT network (wherein UE only communicates by letter with Microcell), but can also be applied in dependent NCT network.

In step 310, NCT base station 124 configures PBCH to comprise specific to the DMRS of this NCT base station 124.All NCT UE (being NCT UE134 and NCT UE136 in this example) that this DMRS can serve for NCT base station 124 carry out demodulation to this PBCH.

As mentioned above, because the specific reference signal of current UE is associated with PDSCH or ePDCCH, it can not directly be reused in the demodulation of PBCH, therefore can design new can be received the DMRS for the demodulation of PBCH by all UE.Therefore, in one embodiment, can produce the specific reference signal sequence of new PBCH specific to the pseudo random sequence of this PBCH by producing, thereby produce the new DMRS being associated with this PBCH.Be appreciated that this new DMRS is different from Legacy DMRS.

For example, suppose that { 111,112,113,114} is the PBCH port in NCT network to antenna port p ∈.So, for any antenna port p ∈ 111,112,113,114}, formula (1) definition that the specific reference signal sequence r of this new PBCH (m) can be by below:

$r\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),---\left(1\right)$

Wherein, 0≤m≤M, M is the quantity of reference signal, and c (i) is the pseudo random sequence of definition in Section 7.2 of 3GPP TS36.213, and its initial value is wherein n _sa timeslot number in subframe, with respectively predetermined PBCH relevant parameter, it is downward rounding operation symbol.Note with should be that UE knows in advance.

Fig. 4 shows the schematic diagram of the subframe structure that comprises the PBCH configuring according to this execution mode.As shown in Figure 4, the new DMRS producing is arranged in the 6-7 of this subframe structure and the Resource Block of 13-14 symbol, as shown in right oblique line square in figure.

Can find out, the position of the new DMRS producing according to this execution mode may cause the conflict between PSS/SSS and DMRS, being with as shown in retiform Resource Block in the 6-7 symbol in the subframe structure in Fig. 4.

Replace in execution mode at another kind, adopt configurable CRS demodulation for PBCH as DMRS.Specifically, produce CRS according to original (Legacy) scheme, and the Resource Block that this CRS is only arranged at this PBCH is opened.Fig. 5 shows the schematic diagram of the subframe structure that comprises the PBCH configuring according to this execution mode.As shown in Figure 5, the CRS producing with produce according to original (Legacy) scheme identical, but the CRS (CRS of the Resource Block that the 8-9 symbol of this subframe is positioned at) that is only arranged in the Resource Block that PBCH is arranged in is useful.

Reduce in this way CRS expense.

Come again with reference to figure 3.After having configured PBCH, in step 320, all NCT UE that NCT base station 124 is served to it broadcast the PBCH configuring in step 310.

For example, for above-mentioned new DMRS, the transmit port of the PBCH in independent NCT network is { 111}, { 111,112} and { in 111,112,113,114} one.

Again for example, for above-mentioned configurable CRS, the transmit port of the PBCH in independent NCT network is { 1}, { 0,1} and { in 0,1,2,3} one.

In one embodiment, the transmission mode of the PBCH in NCT network is space frequency block coding (SFBC).

In one embodiment, in the PBCH transmission in independent NCT network, PBCH can launch on an antenna port.If there are multiple antenna ports, for this new DMRS and configurable CRS, remaining 4 port resources are for PBCH (SFBC/SFBC+ frequency is switched transmission diversity (FSTD)) blind decoding, as shown in Figures 4 and 5.

In addition,, in Cell searching or cell reselection process, NCT UE should obtain enough information from PBCH.For example, NCT UE considers that UE is dispatched by ePDCCH in NCT disposes, so should obtain other system block of information (SIB) information (as SIB1, SIB2 etc.) and obtain before public search space (CSS) configuration information of ePDCCH.Therefore according to another aspect of the present invention, should strengthen the CSS configuration can indicate ePDCCH to the PBCH in NCT network.Meanwhile, indicate CSS configuration because PBCH can not transmit too many bit, therefore should redesign the content of original PBCH (Legacy PBCH) to adapt to NCT scheme.

Fig. 6 show according to the embodiment of the present invention for strengthen the flow chart of the another kind of method 600 of PBCH at NCT network.Method 600 is for example carried out by the NCT base station in NCT network.Similar with method 300, the NCT network being formed taking the microcell base station 124 in Fig. 1 and its two UE (UE134 and UE136) that served describes as example, wherein microcell base station 124 is called to NCT base station 124, two UE (UE134 and UE136) that it is served are called NCT UE134 and NCT UE136.

In step 610, NCT base station is configured to indicate the CSS configuration of ePDCCH to PBCH.

The CSS configuration of ePDCCH can comprise at least one in following information:

ePDCCH transport-type is distributed or localized transmission type

cSS position, the right index of Physical Resource Block (PRB) that CSS is positioned at

cSS size

In 3GPP TS36.331, Radio Resource control (RRC) signaling of the specific ePDCCH configuration of UE is as follows:

Due in NCT network, PBCH amount of bits is limited, and it can not support the Bit String resourceBlockAssignment-rl l of size for 4..38.Therefore, according to another aspect of the present invention, can indicate CSS configuration by some reserved bit.

In order to reduce expense, ePDCCH transport-type (being distributed or localized transmission type) and CSS size can pre-define.Notice in Legacy PDCCH, CSS is made up of 16 control channel elements (CCE).4 PRB are to comprising 16 enhancement mode CCE (eCCE), and therefore, 4 PRB are to just enough the CSS in ePDCCH.Consider this point, for example the CSS size of ePDCCH can be pre-defined is 4 PRB couple.

Therefore, following discussion only concentrates on and how to indicate CSS position.

According to a kind of execution mode, utilize cell identifier (for example Physical Cell Identifier PCI) and CSS index to come joint instructions CSS position.

In this embodiment, staggered pointing-type and continuous pointing-type have been defined.Below to its detailed description.

1, staggered pointing-type:

First community is set and is specifically offset o, skew o can provide by formula (2) below:

$o=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}\left(N\right),---\left(2\right)$

Wherein be cell identifier, N is the integer that depends on bandwidth, and it can pre-define.

If for the right CSS index of PRB, have:

Wherein with respectively number and the CSS size that down link PRB is right, be downward rounding operation symbol, *: * is jump operator, and wherein * a:n:b* represents taking a as starting point, and n is step-length counting, and to be not more than the number of b as the computing of terminal, a, b, n are all integers.

In an example, establishing downlink bandwidth is 10Mbps, this expression and establish N=6, and in staggered pointing-type, CSS index can be expressed as:

2, continuous pointing-type

First community is set and is specifically offset o, the setting of skew o is identical with formula (2) above, the CSS index that PRB is right can be expressed as:

Wherein *: * is jump operator, and * a:b* represents taking a as starting point, and 1 is step-length counting, and to be not more than the number of b as the computing of terminal, a, b are all integers. the number that down link PRB is right, it is downward rounding operation symbol.

In an example, establishing downlink bandwidth is 10Mbps, this expression offer N=6, in continuous pointing-type, CSS index can be expressed as:

In this way, reduced needed CSS configuration indication bit in PBCH.On the other hand, can also avoid the presence of intercell interference on CSS.

Fig. 7 A and Fig. 7 B show respectively according to the continuous dispensing of the CSS position of this execution mode and the staggered schematic diagram distributing.

The advantage of CSS instruction of the present invention comprises: reduced the expense of PBCH for the instruction of CSS position, and the CSS that can reduce between community disturbs.

The execution mode of replacing according to another kind, by starting index with continuous individual PRB is to indicating CSS position, it is CSS size.This indicating means is also referred to as " directly instruction ".

In one implementation, define beginning index by following equation (5)

$n_s^{\mathrm{CSS}}\mathrm{mod}{N}_{\mathrm{RB}}^{\mathrm{CSS}}=0---\left(5\right)$

The CSS index that PRB is right can be expressed as:

$n_{\mathrm{RB}}^{\mathrm{CSS}}=n_s^{\mathrm{CSS}}:1:(n_s^{\mathrm{CSS}}+N_{\mathrm{RB}}^{\mathrm{CSS}}-1).---\left(6\right)$

Wherein *: * is jump operator, and wherein * a:n:b* represents taking a as starting point, and n is step-length counting, and to be not more than the number of b as the computing of terminal, a, b, n are all integers.

For example,, if the right quantity of down link PRB and will have 12 candidates' therefore only need 4 reserved bit to indicate CSS to distribute.

In this implementation, for the needed PBCH bit of different bandwidth as shown in Table 1 below:

Table 1 is for the needed PBCH bit number of different bandwidth

In the one distortion of this execution mode, indicate CSS position by " directly instruction+CSS skew ".

First, define beginning index by formula (5) above

Next, to starting index increase skew k and obtain NEW BEGINNING index with instruction CSS position, it can be provided by following formula (7):

$n_s^{{\mathrm{CSS}}^{\′}}=n_s^{\mathrm{CSS}}+k---\left(7\right)$

Wherein k be integer and

Use NEW BEGINNING index beginning index in replacement formula (6) can determine the CSS index that PRB is right

For example,, if the right quantity of down link PRB and will have 12 candidates' with 4 candidates' k, therefore will need 6 bits to indicate CSS to distribute.

Come again with reference to figure 7.After having configured PBCH, in step 720, all NCT UE that NCT serves to it base station broadcast the PBCH configuring in step 710.

In one embodiment, the transmission mode of the PBCH in NCT network is space frequency block coding (SFBC).

In one embodiment, in the PBCH transmission in independent NCT network, PBCH can launch on an antenna port.

Fig. 8 show according to the embodiment of the present invention for strengthen the block diagram of a kind of device 800 of PBCH at NCT network.Device 800 for example can be realized in NCT base station or by NCT base station and realizing.

As shown in the figure, device 800 comprises: PBCH dispensing unit 810, it is configured to PBCH to be configured to comprise the DMRS specific to NCT base station, all NCT UE that wherein this DMRS serves for this NCT base station carry out demodulation to this PBCH, and transmitting element 820, its all NCT UE that are configured to serve to this NCT base station broadcast the PBCH configuring.

In one embodiment, PBCH dispensing unit 810 is configured to produce the new specific reference signal sequence of this PBCH by producing specific to the pseudo random sequence of this PBCH, thereby produce the DMRS being associated with this PBCH, the specific reference signal sequence r of this new PBCH (m) is:

$r\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$

Wherein 0≤m≤M, M is the quantity of reference signal, and c (i) is Section of 7.2 defined pseudo random sequence of 3GPP TS36.213, and its initial value is

wherein n _sa timeslot number in subframe, with it is respectively predetermined PBCH coordination parameter.

In one embodiment, PBCH dispensing unit 810 is also configured to produce CRS according to original scheme, and the Resource Block that this CRS is only arranged at this PBCH is opened.

Fig. 9 show according to the embodiment of the present invention for strengthen the block diagram of the another kind of device 900 of PBCH at NCT network.Device 900 for example can be realized in NCT base station or by NCT base station and realizing.

As shown in the figure, device 900 comprises: PBCH dispensing unit 910, and it is configured to the CSS configuration that PBCH is configured to indicate ePDCCH, and transmitting element 920, and its all NCT UE that are configured to serve to this NCT base station broadcast the PBCH configuring.

In one embodiment, this CSS configuration comprises at least one in the following: ePDCCH transport-type, CSS position and CSS size.

In one embodiment, PBCH dispensing unit 910 is configured to utilize cell identifier and CSS index to come joint instructions CSS position.

In one embodiment, PBCH dispensing unit 910 is configured to determine according to following formula the right CSS index of PRB that CSS is positioned at:

Wherein with respectively number and the CSS size that down link PRB is right, be downward rounding operation symbol, community is specifically offset be cell identifier, N is the integer that depends on bandwidth, and it is predefined.

In one embodiment, PBCH dispensing unit 910 is configured to determine according to following formula the right CSS index of PRB that CSS is positioned at:

Wherein the number that down link PRB is right, be downward rounding operation symbol, community is specifically offset be cell identifier, N is the integer that depends on bandwidth, and it is predefined.

In one embodiment, PBCH dispensing unit 910 is configured to by starting index with continuous individual PRB is to indicating CSS position, wherein it is CSS size.

In one embodiment, PBCH dispensing unit 910 is configured to define beginning index by following formula

$n_s^{\mathrm{CSS}}\mathrm{mod}{N}_{\mathrm{RB}}^{\mathrm{CSS}}=0.$

In one embodiment, PBCH dispensing unit 910 be also configured to by start index increase skew k and obtain NEW BEGINNING index with instruction CSS position, wherein k be integer and $0\≤k\≤N_{\mathrm{RB}}^{\mathrm{CSS}}-1.$

In the disclosure, according to the linguistic context that uses this term, base station or base station sub-system that term " base station " can refer to the overlay area of base station and/or this overlay area is served.In the disclosure, based on context, term " base station " can exchange and use with " community ", " Node B " " eNodeB " etc.

Here with reference to accompanying drawing, method disclosed herein is described.But be to be understood that, shown in accompanying drawing and specification described in sequence of steps be only schematic, without departing from the scope of the claims, these method steps and/or action can according to different order carry out and be not limited to shown in accompanying drawing and specification described in concrete order.

In one or more exemplary design, can realize the function described in the application by hardware, software, firmware or their combination in any.If realized with software, can be using described function as one or more instructions or code storage on computer-readable medium, or transmit as one or more instructions or code on computer-readable medium.Computer-readable medium comprises computer-readable storage medium and communication media, and wherein communication media comprises the arbitrary medium that contributes to computer program to be delivered to another place from a place.Storage medium can be any usable medium of universal or special computer-accessible.This computer-readable medium can comprise, such as but not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disc memory apparatus, disk storage device or other magnetic storage apparatus, or can be used for carrying or storing with the form of universal or special computer or the addressable instruction of universal or special processor or data structure any other medium of the code modules of hope.And, the arbitrarily connection computer-readable medium of also can being known as.For example, if software be use that coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or the wireless technology such as infrared ray, radio and microwave are come from website, server or the transmission of other remote source, coaxial cable, optical fiber cable, twisted-pair feeder, DSL or the wireless technology such as infrared ray, radio and microwave are also included within the definition of medium so.

Can or realize or carry out in conjunction with the described various exemplary logical blocks of the disclosure, module and circuit for carrying out the combination in any of function as herein described by general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components.General processor can be microprocessor, or processor can be also processor, controller, microcontroller or the state machine of any routine.Processor also can be implemented as the combination of computing equipment, for example, and the combination of the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessor and DSP kernel, or any other this kind of structure.

Those of ordinary skill in the art it is also understood that various exemplary logical block, module, circuit and the algorithm steps described in conjunction with the application's embodiment can be embodied as electronic hardware, computer software or the combination of the two.In order clearly to represent this interchangeability between hardware and software, various exemplary parts, piece, module, circuit and step are all carried out to general description around its function above.Be embodied as hardware or be embodied as software as for this function, depend on specific application and be applied to the design constraint in whole system.Those skilled in the art can, for every kind of application-specific, realize described function in flexible mode, still, thisly realize decision-making and should not be construed as and deviate from protection scope of the present invention.

Above description for making any those of ordinary skill of this area can realize or use the present invention of the present disclosure.To those skilled in the art, various amendments of the present disclosure are all apparent, and general principle defined herein also can be applied to other distortion in the situation that not departing from spirit of the present invention and protection range.Therefore, the present invention is not limited to example as herein described and design, but consistent with the widest scope of principle disclosed herein and novel features.

Claims (14)

1. one kind for strengthening the method for Physical Broadcast Channel (PBCH) at new carrier type (NCT) network, wherein this NCT network comprises one or more NCT subscriber equipmenies (UE) that He GaiNCT base station, NCT base station is served, the method is carried out by NCT base station, comprising:

Configure this PBCH to comprise the demodulated reference signal (DMRS) specific to this NCT base station, all NCT UE that wherein this DMRS serves for this NCT base station carry out demodulation to this PBCH; And

The all NCT UE that serve to this NCT base station broadcast the PBCH configuring.

2. the method for claim 1, wherein configures this PBCH and comprises:

Produce the new reference signal sequence specific to this PBCH by producing specific to the pseudo random sequence of this PBCH, thereby produce the DMRS being associated with this PBCH.

3. method as claimed in claim 2, wherein this new reference signal sequence r (m) specific to this PBCH is:

Wherein 0≤m≤M, M is the quantity of reference signal, and c (i) is Section of 7.2 defined pseudo random sequence of 3GPP TS36.213, and its initial value is

Wherein n _sa timeslot number in subframe, with it is respectively predetermined PBCH coordination parameter.

4. the method for claim 1, wherein configures this PBCH and comprises:

Produce cell specific reference signal (CRS) according to original scheme, and the Resource Block that this CRS is only arranged at this PBCH is opened.

5. one kind for strengthening the method for Physical Broadcast Channel (PBCH) at new carrier type (NCT) network, wherein this NCT network comprises one or more NCT subscriber equipmenies (UE) that He GaiNCT base station, NCT base station is served, the method is carried out by NCT base station, comprising:

Configure public search space (CSS) configuration of this PBCH with instruction enhancement mode Physical Downlink Control Channel (ePDCCH); And

The all NCT UE that serve to this NCT base station broadcast the PBCH configuring.

6. method as claimed in claim 5, wherein this CSS configuration comprises at least one in the following: ePDCCH transport-type, CSS position and CSS size.

7. method as claimed in claim 5, wherein configures this PBCH and comprises with the CSS configuration of instruction ePDCCH: utilize cell identifier and CSS index to come joint instructions CSS position.

8. method as claimed in claim 7, wherein utilize cell identifier and CSS index to come joint instructions CSS position and comprise according to following formula and determine the right CSS index of PRB that CSS is positioned at:

Wherein with respectively number and the CSS size that down link PRB is right; it is downward rounding operation symbol; Community is specifically offset be cell identifier, N is the integer that depends on bandwidth, and it is predefined; *: * is jump operator, * a:n:b* represents taking a as starting point, and n is step-length counting, and to be not more than the number of b as the computing of terminal, a, b, n are all integers.

9. method as claimed in claim 7, wherein utilize cell identifier and CSS index to come joint instructions CSS position and comprise according to following formula and determine the right CSS index of PRB that CSS is positioned at:

Wherein it is the number that down link PRB is right; it is downward rounding operation symbol; Community is specifically offset be cell identifier, N is the integer that depends on bandwidth, and it is predefined; *: * is jump operator, * a:b* represents taking a as starting point, and 1 is step-length counting, and to be not more than the number of b as the computing of terminal, a, b are all integers.

10. method as claimed in claim 5, wherein configures this PBCH and comprises with the CSS configuration of instruction ePDCCH: by starting index with continuous individual PRB is to indicating CSS position, wherein it is CSS size.

11. methods as claimed in claim 10, wherein define beginning index by following formula

12. methods as claimed in claim 11, wherein also pass through to starting index increase skew k and obtain NEW BEGINNING index with instruction CSS position, wherein k be integer and

13. 1 kinds for strengthening the device of Physical Broadcast Channel (PBCH) at new carrier type (NCT) network, wherein this NCT network comprises one or more NCT subscriber equipmenies (UE) that He GaiNCT base station, NCT base station is served, this device is realized and being realized in NCT base station or by NCT base station, comprising:

PBCH dispensing unit, it is configured to this PBCH to be configured to comprise the demodulated reference signal (DMRS) specific to this NCT base station, and all NCT UE that wherein this DMRS serves for this NCT base station carry out demodulation to this PBCH; And

Transmitting element, its all NCT UE that are configured to serve to this NCT base station broadcast the PBCH configuring.

14. 1 kinds for strengthening the device of Physical Broadcast Channel (PBCH) at new carrier type (NCT) network, wherein this NCT network comprises one or more NCT subscriber equipmenies (UE) that He GaiNCT base station, NCT base station is served, this device is realized and being realized in NCT base station or by NCT base station, comprising:

PBCH dispensing unit, it is configured to public search space (CSS) configuration that this PBCH is configured to indicate enhancement mode Physical Downlink Control Channel (ePDCCH); And

Transmitting element, its all NCT UE that are configured to serve to this NCT base station broadcast the PBCH configuring.