CN108259148B - Method and device for transmitting reference signal - Google Patents
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- CN108259148B CN108259148B CN201611248195.7A CN201611248195A CN108259148B CN 108259148 B CN108259148 B CN 108259148B CN 201611248195 A CN201611248195 A CN 201611248195A CN 108259148 B CN108259148 B CN 108259148B
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Abstract
The application discloses a method and a device for transmitting reference signals, wherein the method comprises the following steps: a sending end determines a second resource, and the position of the second resource is not coincident with the position of the first resource; and the sending end sends a first reference signal to a receiving end through the second resource. According to the method and the device for transmitting the reference signal, the second resource is determined according to the configuration situation of the first resource, and the reference signal is sent or received according to the second resource, so that the reference signal can be transmitted on the premise of not influencing the forward or backward compatibility of the NR system.
Description
Technical Field
The embodiment of the application relates to the field of communication, in particular to a method and a device for transmitting reference signals.
Background
In a next generation wireless communication system, for example, a New Radio (NR) system, in order to ensure forward or backward compatibility, the system supports reserving some reserved resources (reserved resources), which may also be referred to as blank resources (blank resources), in resources, as one possible application, the reserved resources may be used for interference measurement through transmitting a pilot or a sensing symbol, the reserved resources may occupy all or part of a bandwidth in a frequency domain, and may occupy one or more symbols in a time domain, and thus, the reserved resources may also be referred to as reserved symbols or blank symbols. In a scenario where NR coexists with Long Term Evolution (LTE), the reserved resources may be used to transmit a reference signal of the LTE system.
In a scenario where an NR system or NR and LTE coexist, a transmitting end may transmit a Reference Signal (RS) to a receiving end through the NR system, where the Reference Signal is an NR Reference Signal; for a system in which NR and LTE coexist, a transmitting end also transmits a reference signal, i.e., an LTE reference signal, to a receiving end through the LTE system. In Downlink, the LTE Reference Signal may be, for example, a Cell-specific Reference Signal (CRS), a UE-specific Reference Signal (UE-specific Reference Signal, where UE is short for "User Equipment"), a Channel State Information Reference Signal (CSI-RS, where "CSI" is short for "Channel State Information"), an MBSFN (Multicast-Broadcast Single frequency Network) Reference Signal, a Positioning Reference Signal (Positioning Reference Signal), or an EPDCCH-associated Demodulation Reference Signal (Demodulation Reference associated with cch), where EPDCCH is short for Enhanced Physical Downlink Control Channel (EPDCCH), where the LTE Reference Signal in LTE resources has a time-frequency location Reference Signal (3.211), and the time-frequency location of the LTE Reference Signal in the time-frequency protocol (TS) is a time-frequency resource specified by the time-frequency protocol (GPP).
Since the resources used by the NR system for transmitting the reference signal and the reserved resources may occupy the same time-frequency position, how to transmit the reference signal without affecting the forward or backward compatibility of the NR system is a problem that needs to be solved urgently.
Disclosure of Invention
In view of this, an embodiment of the present application provides a method for transmitting an RS, which determines a second resource according to a configuration of a first resource, and transmits or receives an RS according to the second resource, so as to transmit a reference signal without affecting forward or backward compatibility of an NR system.
In one aspect, a method for transmitting a reference signal is provided, and the method includes: the sending end determines a second resource; and the sending end sends a first reference signal to a receiving end through the second resource.
According to the method for transmitting the reference signal provided by the embodiment of the application, the second resource which is not overlapped with the first resource is determined from the time-frequency resource, and the reference signal is sent to the receiving end through the second resource, so that the problem that the resource for transmitting the reference signal in the NR system is overlapped with the reserved resource can be solved.
Optionally, the determining, by the sending end, a second resource includes:
when the first resource is not configured in the time-frequency resource, the sending end determines the second resource according to a first mapping mode, wherein the first mapping mode is used for indicating the position of the second resource;
and when the first resource is configured in the time frequency resource, the sending end determines the second resource according to a second mapping mode, wherein the second mapping mode is used for indicating the position of the second resource.
According to the method for transmitting the reference signal provided by the embodiment of the application, the sending end determines the second resource from the time-frequency resources according to whether the first resource is configured or not, so that the problem that the resource for transmitting the reference signal in the NR system is overlapped with the reserved resource can be avoided.
Optionally, the determining, by the sending end, a second resource includes: and the sending end determines the second resource according to the position of the first resource.
According to the method for transmitting the reference signal provided by the embodiment of the application, after the position of the first resource in the time-frequency resource is determined, the sending end can determine the second resource from the time-frequency resource according to the position of the first resource, wherein the position of the second resource is not overlapped with the position of the first resource, the first resource is used as a reserved resource, and the second resource is used for transmitting the reference signal, so that the problem that the resource for transmitting the reference signal and the reserved resource occupy the same resource in an NR system can be avoided.
Optionally, the determining, by the sending end, a second resource includes: and the sending end determines the second resource according to the offset and the position of the first resource. Thereby the second resource can be flexibly determined.
Optionally, the method further comprises: the sending end sends first indication information to the receiving end, wherein the first indication information is used for indicating the offset. Therefore, the offset can be flexibly determined according to actual conditions.
Optionally, the method further comprises: and the transmitting end determines the offset according to the position of the first resource and the position of a third resource, wherein the third resource is used for transmitting a second reference signal. So that it is possible to avoid that the resources used for transmitting the first reference signal coincide with the resources used for transmitting the other reference signals.
Optionally, the determining, by the sending end, the second resource according to the offset and the position of the first resource includes: and the sending end determines the second resource according to the position of the first resource, the offset and a position parameter, wherein the position parameter comprises at least one parameter of a frame number of a subframe used for sending the first reference signal and a port number of an antenna port used for sending the reference signal.
Optionally, the location of the second resource is at least one location in a set { (i, k), i ═ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11}, (i, k) denotes a resource located at an ith symbol and a kth subcarrier in one physical resource block, where the physical resource block is a resource block including 7 symbols and 12 subcarriers with reference to a subcarrier spacing of 15kHz, and (i, k) satisfies the following condition:
i ═ m +7) mod7, where m represents a time offset between a first symbol index and a second symbol index, m is an integer greater than or equal to 0, where n represents the first symbol index, n ═ 0, 1, 2, 3, 4, 5, and 6, where (n-m +7) mod7 represents the remainder of (n-m +7) divided by 7,
when n is 0, k is not equal to 0 and 6; or,
when n is 4, k is not equal to 3 and 9; or,
when n is 0 or 1 or 4, k is not equal to 0, 3, 6 and 9.
Optionally, the method further comprises: and the sending end sends second indication information to the receiving end, wherein the second indication information is used for indicating the mapping mode of the first reference signal. So that the receiving end can directly determine the second resource.
Optionally, the first resource is at least used for transmitting a reference signal of a long term evolution, LTE, system, the reference signal of the LTE system including a cell-specific reference signal, CRS.
In another aspect, a method of transmitting a reference signal is provided, the method including: a receiving end determines a second resource, and the position of the second resource is not coincident with the position of the first resource; the receiving end receives a first reference signal from the transmitting end through the second resource.
According to the method for transmitting the reference signal provided by the embodiment of the application, the second resource which is not overlapped with the first resource is determined from the time-frequency resource, and the first reference signal sent by the sending end is received through the second resource, so that the problem that the resource used for transmitting the reference signal in the NR system is overlapped with the reserved resource can be solved.
Optionally, the determining, by the receiving end, a second resource includes:
when the first resource is not configured in the time-frequency resource, the receiving end determines the second resource according to a first mapping mode, wherein the first mapping mode is used for indicating the position of the second resource;
and when the first resource is configured in the time frequency resource, the receiving end determines the second resource according to a second mapping mode, wherein the second mapping mode is used for indicating the position of the second resource.
According to the method for transmitting the reference signal provided by the embodiment of the application, the receiving end determines the second resource from the time-frequency resources according to whether the first resource is configured, so that the problem that the resource for transmitting the reference signal in the NR system is overlapped with the reserved resource can be avoided.
Optionally, the determining, by the receiving end, a second resource includes: and the receiving end determines the second resource according to the position of the first resource.
According to the method for transmitting the reference signal provided by the embodiment of the application, after the position of the first resource in the time-frequency resource is determined, the receiving end can determine the second resource from the time-frequency resource according to the position of the first resource, wherein the position of the second resource is not overlapped with the position of the first resource, the first resource is used as a reserved resource, and the second resource is used for transmitting the reference signal, so that the problem that the resource used for transmitting the reference signal in the NR system and the reserved resource occupy the same resource can be avoided.
Optionally, the determining, by the receiving end, a second resource includes: and the receiving end determines the second resource according to the position and the offset of the first resource. Thereby the second resource can be flexibly determined.
Optionally, the method further comprises: the receiving end receives first indication information from the sending end; and the receiving end determines the offset according to the first indication information. Therefore, the offset can be flexibly determined according to actual conditions.
Optionally, the determining, by the sending end, the second resource according to the offset and the position of the first resource includes: and the receiving end determines the second resource according to the position of the first resource, the offset and a position parameter, wherein the position parameter comprises at least one parameter of a frame number of a subframe used for sending the first reference signal and a port number of an antenna port used for sending the reference signal.
Optionally, the location of the second resource is at least one location in a set { (i, k), i ═ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11}, (i, k) denotes a resource located at an ith symbol and a kth subcarrier in one physical resource block, where the physical resource block is a resource block including 7 symbols and 12 subcarriers with reference to a subcarrier spacing of 15kHz, and (i, k) satisfies the following condition:
i ═ m +7) mod7, where m represents a time offset between a first symbol index and a second symbol index, m is an integer greater than or equal to 0, where n represents the first symbol index, n ═ 0, 1, 2, 3, 4, 5, and 6, where (n-m +7) mod7 represents the remainder of (n-m +7) divided by 7,
when n is 0, k is not equal to 0 and 6; or,
when n is 4, k is not equal to 3 and 9; or,
when n is 0 or 1 or 4, k is not equal to 0, 3, 6 and 9.
Optionally, the determining, by the receiving end, a second resource includes: the receiving end receives second indication information from the sending end, wherein the second indication information is used for indicating the mapping mode of the first reference signal; and the receiving end determines the second resource according to the second indication information. So that the receiving end can flexibly determine the second resource.
Optionally, the first resource is at least used for transmitting a reference signal of a long term evolution, LTE, system, the reference signal of the LTE system including a cell-specific reference signal, CRS.
In another aspect, an embodiment of the present application provides an apparatus for transmitting a reference signal, where the apparatus may implement a function executed by a sending end in the method in the above aspect, and the function may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.
In one possible design, the apparatus includes a processor and a transceiver in the structure, and the processor is configured to support the apparatus to perform the corresponding functions of the method. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.
In another aspect, an embodiment of the present application provides an apparatus for transmitting a reference signal, where the apparatus may implement a function executed by a receiving end in the method in the above aspect, and the function may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.
In one possible design, the apparatus includes a processor and a transceiver in the structure, and the processor is configured to support the apparatus to perform the corresponding functions of the method. The transceiver is for supporting communication between the apparatus and other network elements. The apparatus may also include a memory, coupled to the processor, that retains program instructions and data necessary for the apparatus.
In another aspect, the present application provides a computer storage medium for storing computer software instructions for the sender, which includes a program designed to execute the above aspects.
In another aspect, the present invention provides a computer storage medium for storing computer software instructions for the receiving end, which includes a program designed to execute the above aspects.
Compared with the prior art, according to the method and the device for transmitting the reference signal provided by the embodiment of the application, the second resource is determined according to the configuration of the first resource, and the reference signal is sent or received according to the second resource, so that the reference signal is transmitted on the premise of not influencing the forward or backward compatibility of the NR system.
Drawings
Fig. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable;
fig. 2 is a schematic flow chart of a method for transmitting an RS according to an embodiment of the present application;
fig. 3A is a schematic diagram of a method for determining a second resource according to an embodiment of the present application;
fig. 3B is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 3C is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 4 is a schematic diagram of one possible LTE and NR coexistence scenario;
fig. 5A is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 5B is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 5C is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 5D is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 6 is a schematic diagram of another method for determining a second resource according to an embodiment of the present application;
fig. 7A is a schematic structural diagram of a possible transmitting end according to an embodiment of the present disclosure;
fig. 7B is a schematic structural diagram of another possible transmitting end provided in the embodiment of the present application;
fig. 8A is a schematic structural diagram of a possible receiving end according to an embodiment of the present disclosure;
fig. 8B is a schematic structural diagram of another possible receiving end according to the embodiment of the present application.
Detailed Description
Fig. 1 is a diagram of a communication system 100 to which embodiments of the present application are applicable. As shown in fig. 1, the communication system includes a base station 110 and a User Equipment (UE) 120, where the base station 110 may only support a next generation communication system, such as an NR system, or referred to as a fifth generation (5G) communication system, the base station 110 may also support both an NR system and a current communication system, and the current communication system may be an LTE system, or a CDMA (Code Division Multiple Access) system, or another communication system, and hereinafter, the NR system and the LTE system are taken as examples for description, but should not be construed as a limitation to the application scope of the embodiments of the present application. The UE120 may support both the NR system and the LTE system, or may support only the NR system. The base station 110 may transmit an NR reference signal and/or an LTE reference signal to the UE120, and the UE120 performs channel estimation or signal demodulation according to the corresponding reference signal or uses the signal for other purposes, where the transmitting end is the base station 110 and the receiving end is the UE 120.
Optionally, the UE120 may send an NR reference signal and/or an LTE reference signal to the base station 110, and the base station 110 performs channel estimation or signal demodulation or uses for other purposes according to the corresponding reference signal, where the sending end is the UE120 and the receiving end is the base station 110.
In embodiments of the present application, a terminal device, which may be referred to as an access terminal, user equipment, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment, may communicate with one or more core networks via a radio access network. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, and a terminal device in future 5G networks.
It should also be understood that, in the embodiment of the present application, the Base Station may be a Base Station (BTS) in a CDMA system, a Base Station (Node B, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB) or eNode B in an LTE system, the Base Station is only one of network devices, and the network device communicating with the user equipment may be a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Base Station device in a future 5G network, and the like.
The communication system 100 is only an example, the number of base stations and terminal devices is not limited to the number shown in fig. 1, and the systems supported by different UEs within the management range of one base station may be one or more of the above communication systems.
Fig. 2 is a communication diagram of a method for transmitting a reference signal according to an embodiment of the present disclosure. As shown in fig. 2, the method 200 includes:
s201, a sending end determines a second resource, and the position of the second resource is not overlapped with the position of the first resource.
S202, the receiving end determines a second resource, and the position of the second resource is not overlapped with the position of the first resource.
In this embodiment, the first Resource and the second Resource are at least one Resource Element (RE) in time-frequency resources used by the sending end and the receiving end for communication, and the sending end and the receiving end may determine the second Resource from the time-frequency resources according to the configuration of the first Resource. The first resource may be, for example, a reserved resource, which may or may not be used for transmitting information.
After the sending end determines the second resource, the method 200 further includes:
s203, the transmitting end transmits the first reference signal to the receiving end through the second resource.
S204, the receiving end receives the first reference signal from the transmitting end through the second resource.
After the sending end and the receiving end determine the second resource, the sending end sends a first reference signal through the second resource, and the receiving end receives the first reference signal according to the position of the second resource, where the first reference signal refers to a reference signal sent by an NR system (hereinafter, unless otherwise specified, the first reference signal refers to a reference signal sent by the NR system). Because the second resource determined by the sending end and the receiving end does not coincide with the first resource, the problem that the resource used for transmitting the reference signal in the NR system coincides with the reserved resource can be avoided.
Optionally, the determining, by the sending end, a second resource includes:
s205, when the first resource is not configured in the time-frequency resource, the sending end determines the second resource according to a first mapping mode, wherein the first mapping mode is used for indicating the position of the second resource;
and when the first resource is configured in the time frequency resource, the sending end determines the second resource according to a second mapping mode, wherein the second mapping mode is used for indicating the position of the second resource.
Optionally, the determining, by the receiving end, a second resource includes:
s206, when the first resource is not configured in the time frequency resource, the receiving end determines the second resource according to a first mapping mode, wherein the first mapping mode is used for indicating the position of the second resource;
and when the first resource is configured in the time frequency resource, the receiving end determines the second resource according to a second mapping mode, wherein the second mapping mode is used for indicating the position of the second resource.
As an optional embodiment, when the time-frequency resource is not configured with the first resource, the sending end and the receiving end may determine the second resource from the time-frequency resource according to a first mapping manner, where the first mapping manner is to pre-configure information in the sending end and the receiving end, respectively.
As another optional embodiment, when the communication system configures the first resource, the sending end and the receiving end may determine the second resource from the time-frequency resource according to a second mapping manner, respectively, where a position of the second resource in the time-frequency resource is not overlapped with a position of the first resource in the time-frequency resource, where the second mapping manner is to pre-configure information in the sending end and the receiving end, respectively.
In a scenario where LTE and NR coexist, taking the time offset of the LTE system and the NR system equal to 0 as an example, the symbol index (n) of the LTE system and the symbol index (i) of the NR system are consistent, that is, i equals to n.
Fig. 3A shows a schematic diagram of a method of determining a second resource. As shown in fig. 3A, the symbol R0Is used for transmitting LTE reference signals, and time-frequency resources (resources in a bold frame in fig. 3A) corresponding to subcarriers having i equal to 1, 2, and 3 and k equal to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 are allocated to the NR system since the NR system and the identifier R are assigned to the NR system0The RE(s) are not overlapped, so that no reserved resource (i.e., first resource) may be configured in the NR, and at this time, the transmitting end and the receiving end may determine the second resource (i.e., the identifier R) according to the mapping manner shown in fig. 3A respectively1RE) of the first resource, and transmits the NR reference signal through the second resource, so that a problem of coincidence of resources used for transmitting the reference signal and reserved resources in the NR system can be avoided.
Fig. 3B shows a schematic diagram of another method of determining the second resource. As shown in fig. 3B, the symbol R0RE of (2), 3, 4, 5 and 6, and time-frequency resources (resources in the bold line frame in fig. 3A) corresponding to subcarriers having i equal to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 are allocated to the NR system, in order not to affect the operation of the LTE system, the NR system needs to take the position of { i equal to 4, k equal to 3 and 9} as reserved resources (i.e., first resources) for transmitting the LTE reference signal, and the transmitting end may determine second resources (i.e., identified as R) according to the mapping manner shown in fig. 3B (i.e., the reserved resources are used for transmitting the LTE reference signal)1RE) of (b) is used for transmitting NR reference signals.
Fig. 3C is a schematic diagram illustrating yet another method of determining a second resource. As shown in fig. 3C, the symbol R0Is used for transmitting reference signals, and time-frequency resources (RE in the bold line frame in fig. 3A) corresponding to subcarriers having i of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 and k of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 are allocated to the NR system, and in order not to affect the operation of the LTE system, the NR system needs to allocate bits having { i of 0, k of 0, and 6} and { i of 4, k of 3, and 9}Set as a reserved resource (i.e., a first resource) for transmitting LTE reference signals, the transmitting end may determine a second resource (i.e., identified as R) according to the mapping manner shown in fig. 3C1RE) of (b) is used for transmitting NR reference signals.
Fig. 3A to 3C show three mapping manners of the reference signal (i.e., mapping to different positions of the time-frequency resource), the mapping manners shown in fig. 3A to 3C may be preset in the transmitting end and the receiving end, and the transmitting end and the receiving end may also determine the second resource in other manners.
The methods shown in fig. 3A to 3C are merely examples, and the embodiment of the present application is not limited thereto, and when the first resource is configured in the time frequency resource, the transmitting end and the receiving end may also determine the second resource according to other methods.
Therefore, the method for transmitting the reference signal according to the embodiment of the present application determines the second resource from the time-frequency resource according to whether the first resource is configured in the time-frequency resource, and transmits the first reference signal to the receiving end through the second resource, so as to avoid the problem that the resource for transmitting the reference signal in the NR system coincides with the reserved resource.
Optionally, the determining, by the sending end, a second resource includes:
s207, the sending end determines the second resource according to the position of the first resource.
Optionally, the determining, by the receiving end, a second resource includes:
s208, the receiving end determines the second resource according to the position of the first resource.
When the position of the first resource coincides with the position of the resource allocated by the reference signal for transmitting the NR system, the transmitting end and the receiving end may determine a second resource according to the position of the first resource (in each embodiment of the present application, no limitation is made on how the transmitting end sets the reserved resource and how the transmitting end knows the configuration of the reserved resource), the position of the second resource does not coincide with the position of the first resource, and the reference signal for the NR system may be transmitted through the second resource; when the position of the first resource does not coincide with the position of the resource allocated to transmit the reference signal of the NR system, the transmitting end and the receiving end may transmit the reference signal of the NR system according to the allocated resource. As an optional embodiment, in a communication system where NR and LTE coexist, the first resource may be used for transmitting a reference signal of the LTE system.
According to the method for transmitting the reference signal provided by the embodiment of the application, after the position of the first resource in the time-frequency resource is determined, the transmitting end or the receiving end can determine the second resource from the time-frequency resource according to the position of the first resource, wherein the position of the second resource is not overlapped with the position of the first resource, the first resource is used as a reserved resource, and the second resource is used for transmitting the reference signal, so that the problem that the resource for transmitting the reference signal and the reserved resource occupy the same resource in an NR system can be avoided.
Optionally, the determining, by the sending end, a second resource includes:
s209, the sending end determines the second resource according to the offset and the position of the first resource.
Optionally, the determining, by the receiving end, a second resource includes:
s210, the receiving end determines the second resource according to the offset and the position of the first resource.
The offset may be 0 or a non-zero value, for example, when the position of the first resource coincides with the position of the resource for transmitting the reference signal, the offset is a non-zero value, and the second resource may be a resource that differs from the first resource by several symbols, a resource that differs from the first resource by several subcarriers, or a resource that differs from the first resource by several symbols and several subcarriers. For another example, when the position of the first resource does not coincide with the position of the resource for transmitting the reference signal, the offset is 0. In addition, the offset may be information preset in the transmitting end and the receiving end.
Therefore, in the method for transmitting the reference signal provided by the embodiment of the present application, the sending end or the receiving end determines the second resource according to the position and the offset of the first resource, which can avoid the situation that the resource used for transmitting the reference signal coincides with the reserved resource in the NR scenario, and can flexibly determine the second resource. In addition, in a scenario where NR and LTE coexist, resources are reserved for transmitting LTE reference signals, and the embodiments of the present application can avoid a situation that resources occupied by reference signals of different communication systems may coincide, and can flexibly determine the second resource.
Optionally, the method 200 further comprises:
s211, the sending end sends first indication information to the receiving end, and the first indication information is used for indicating offset.
S212, the receiving end determines the offset according to the first indication information.
In the embodiment of the present application, after determining the offset, the sending end informs the receiving end of the offset by sending the indication information, for example, when the position of the first resource coincides with the position of the resource configured by the transmission reference signal, the sending end may determine that the offset is 1 symbol, or the sending end may determine that the offset is 1 subcarrier and informs the receiving end of the offset by the first indication information; when the position of the first Resource does not coincide with the position of the transmission reference signal, the transmitting end may determine that the offset is 0, and notify the receiving end through first indication Information, where the first indication Information may be Downlink Control Information (DCI), or may be other indication Information, such as Radio Resource Control (RRC) signaling.
Therefore, in the method for transmitting the reference signal provided by the embodiment of the application, the sending end sends the first indication information to the receiving end, and the receiving end determines the offset according to the first indication information, so that the offset can be flexibly determined according to the actual situation.
Optionally, the method 200 further comprises:
s213, the transmitting end determines the offset according to the position of the first resource and the position of a third resource, and the third resource is used for transmitting a second reference signal.
For example, for a scenario where the reference signal is transmitted by multiple antennas, in order to enable the receiving end to distinguish reference signals of different antennas, the transmitting end transmits the reference signal in a frequency division manner, that is, different antennas use different REs to transmit the reference signal, and when the transmitting end is ready to transmit the first reference signal by using the second resource, the transmitting end may determine the offset according to the position of the first resource and the position of a resource (that is, the third resource) configured to transmit the second reference signal, so that the position of the second resource does not coincide with the position of the third resource.
Therefore, in the method for transmitting the reference signal provided in the embodiment of the present application, the transmitting end determines the offset according to the position of the first resource and the position of the third resource, so that a situation that resources occupied by reference signals corresponding to different antennas may coincide may be avoided.
Optionally, the determining, by the sending end, the second resource according to the position and the offset of the first resource includes:
s214, the sending end determines the second resource according to the position of the first resource, the offset and a position parameter, wherein the position parameter includes at least one of a frame number of a subframe used for sending the first reference signal and a port number of an antenna port used for sending the reference signal.
The position of the second resource is related to the frame number of the subframe to which the first RS is to be transmitted and/or the port number of the antenna port used for transmitting the reference signal, in addition to the offset and the position of the first resource in the time-frequency resource. As an optional embodiment, in a scenario where NR and LTE coexist, the location of the second resource is further related to a frame number of a subframe in which the LTE system transmits the reference signal and/or a port number of an antenna port configured at the transmitting end.
The foregoing method is merely an example, and the embodiment of the present application is not limited to this, for example, the sending end may also determine the second resource according to the location of the first resource and the location parameter.
In various embodiments of the present application, the location of the second resource is at least one location in a set { (i, k), where i is 0, 1, 2, 3, 4, 5, and 6, and k is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11}, (i, k) denotes a resource located at an ith symbol and a kth subcarrier in one physical resource block, and the physical resource block is a resource block including 7 symbols and 12 subcarriers with reference to a subcarrier spacing of 15kHz, where (i, k) satisfies the following condition:
i ═ m +7) mod7, where m represents the time offset between a first symbol index representing the symbol index in one slot of the LTE system and a second symbol index representing the symbol index in one slot of the NR system (assuming that each slot includes 7 symbols, and so on if the number of symbols included in one slot is other numbers), in the case where NR and LTE coexist, m is an integer greater than or equal to 0, fig. 4 shows the case where m is an integer greater than 0. The time offset of the LTE system from the NR system is 0 when m is 0, n denotes an index number of a symbol in one slot of the LTE communication system, n is 0, 1, 2, 3, 4, 5, and 6, (n-m +7) mod7 denotes a remainder obtained by dividing (n-m +7) by 7,
when n is 0, k is not equal to 0 and 6; or,
when n is 4, k is not equal to 3 and 9; or,
when n is 0 or 1 or 4, k is not equal to 0, 3, 6 and 9.
Taking the reserved resources as an example for transmitting the CRS in the LTE system, when the LTE system uses a single antenna to transmit the CRS, the CRS is located at { n-0, k-0 and 6}, { n-4, k-3 and 9}, so that when the set of second resources satisfies n-0, k is not equal to 0 and 6, and when n-4, k is not equal to 3 and 9,
when the LTE system employs dual antennas, the location of the CRS is { n ═ 0, k ═ 0, 3, 6, and 9}, { n ═ 4, k ═ 0, 1, 3, 6, and 9}, when the LTE system employs four antennas, the location of the CRS is { n ═ 0, k ═ 0, 1, 3, 6, and 9}, { n ═ 4, 0, 1, 3, 6, and 9}, and { n ═ 1, 0, 1, 3, 6, and 9}, so when the set of second resources satisfies n ═ 0 or 1 or 4, the k is not equal to 0, 3, 6, and 9.
The above-mentioned physical resource block comprising 7 symbols and 12 subcarriers is only an example, and other physical resource blocks of other sizes may be analogized.
The method for transmitting the reference signal provided by the embodiment of the application can avoid the situation that the reference signals of different communication systems occupy the same resource in the communication system with the coexistence of NR and LTE.
Optionally, the method 200 further comprises:
s215, the sending end sends second indication information to the receiving end, where the second indication information is used to indicate a mapping manner of the first reference signal.
S216, the receiving end determines the second resource according to the second indication information.
The sending end may directly determine the second resource according to one of the at least two mapping manners, and send the second indication information to the receiving end to indicate the mapping manner of the first reference signal selected by the sending end, for example, when the position of the first resource coincides with the position of the resource corresponding to the first mapping manner of the first reference signal, the sending end may select the second mapping manner, and determine the second resource according to the second mapping manner, at this time, the second indication information indicates the second mapping manner; when the location of the first resource does not coincide with the location of the resource corresponding to the first mapping manner of the first reference signal, the sending end may select the first mapping manner and determine the second resource according to the first mapping manner, and at this time, the second indication information indicates the first mapping manner. The second indication information may be DCI, or may be other indication information, such as RRC signaling.
For another example, after determining the mapping manner of the second resource according to the offset, the sending end may send second indication information to the receiving end, where the second indication information is used to indicate the mapping manner of the second resource.
Therefore, in the method for transmitting a reference signal provided in this embodiment of the present application, the sending end sends the second indication information to the receiving end, and the receiving end directly determines the mapping manner of the second resource according to the second indication information.
Optionally, the first resource is used for transmitting a reference signal of an LTE system and the reference signal of the LTE system includes a CRS.
When the communication system configures the first resource, the first resource may be used for transmitting a reference signal of the LTE system, where the reference signal of the LTE system includes the CRS and may also include other types of reference signals.
Fig. 5A shows a schematic diagram of a method of determining a second resource. The time-frequency resources shown in fig. 5A and in the following figures are illustrated with a 15kHz subcarrier spacing of the normal cyclic prefix. If it is other parameters (numerology, referring to a set including { subcarrier spacing, cyclic prefix, frame/subframe/slot/minislot (mini-slot)/symbol, bandwidth }, or a subset thereof), the relationship between different numerologies may be analogized. The pattern shown in fig. 5A represents time-frequency resources included in one subframe, 12 subcarriers are taken as an example in the frequency domain, where each small square represents an RE occupying one symbol in the time domain and one subcarrier in the frequency domain, the light gray RE not identified in fig. 5A represents a part of the time-frequency resources allocated to the reference signal, the RE in the thick line frame represents a reserved resource (i.e., a first resource), and since the reserved resource coincides with the part of the RE allocated to the reference signal, the mapping position of the reference signal needs to be determined again. Optionally, as shown by the arrow in the figure, the RE of the symbol with i-4 in the even slot is determined according to the position of the reserved resource for transmitting the reference signal, so that, when the RE for transmitting the reference signal is occupied by the reserved resource, the reference signal can be transmitted through other REs, where the position of the reference signal transmission is identified as R0RE of (1).
Fig. 5B shows a schematic diagram of another method of determining the second resource. The pattern shown in fig. 5B represents time-frequency resources included in one subframe, wherein each small square represents an RE occupying one symbol in the time domain and one subcarrier in the frequency domain, the light gray RE not identified in fig. 5B represents a part of the time-frequency resources allocated to the reference signal, and the RE in the thick line frame represents a reserved resource (i.e., a first resource), and since the reserved resource is partially overlapped with the RE allocated to the reference signal, the mapping position of the reference signal needs to be determined again. Optionally, as shown by the arrow in the figure, the RE of the subcarrier located at k-7 is determined according to the position of the reserved resource for transmitting the reference signal, so that when the RE for transmitting the reference signal is occupied by the reserved resource, the reference signal can pass through other REsRE is transmitted, and the position of reference signal transmission is marked as R0RE of (1).
The methods shown in fig. 5A and 5B are only examples, and the offset may be other numbers of symbols or subcarriers, such as the offset method shown in fig. 5C, where the light gray REs without identification represent a part of time-frequency resources allocated to the reference signal, the REs in the bold line frame represent reserved resources, where the reserved resources occupy two symbols, and the offset may be two symbols, and the arrow in fig. 5C represents that the resources used for transmitting the reference signal are determined according to the position of the reserved resources and the offset, and the position of the reference signal transmission is identified as R0RE of (1); as shown in fig. 5D, the grey REs without identifiers represent a part of time-frequency resources allocated to the reference signal, the REs allocated to the reference signal occupy two symbols, the REs in the bold frame represent reserved resources, the reserved resources coincide with the resources allocated to the reference signal, and the offset may be determined as two symbols. The arrow in FIG. 5D indicates that the resource for transmitting the reference signal is determined according to the position and offset of the reserved resource, when the position of the reference signal transmission is marked R7RE of (1). Thereby, the RE transmitting the reference signal can be prevented from being overlapped with the RE occupied by the reserved resource.
In addition, in the method for determining the second resource shown in fig. 5A to 5D, the second resource for transmitting the reference signal may also be determined from the reserved resources.
Fig. 6 is a schematic diagram illustrating yet another method of determining a second resource. As shown in fig. 6, a first antenna transmits a first RS, time-frequency resources allocated to the first RS are gray (without grid) REs, a second antenna transmits a second RS, the time-frequency resources allocated to the second RS are gray (with grid) REs, the REs in a thick line frame are reserved resources, the reserved resources coincide with the REs used for transmitting the first RS, so the REs used for transmitting the first RS need to be RE-determined, and when the REs RE-allocated to the first RS are determined according to an offset, since the REs (i.e., third resources) at a symbol position where i ═ 4 are already allocated to the second RS, the offset cannot be equal to 4 symbols, that is, a transmitting end needs to determine the position of the reserved resources in the time-frequency resources according to the reserved resources and the third resourcesThe location of the source in the system time-frequency resource determines the offset. The arrows in FIG. 6 indicate the radicals according to R1Determines the first RS according to the position and offset of the first RS, and the position where the first RS is transmitted is marked as R0RE of (1). The above embodiments are merely examples, and the embodiments of the present application are not limited thereto, and the method for transmitting an RS according to the present application may also be applied to a scenario including a plurality of antennas simultaneously transmitting an RS.
The scheme of the embodiment of the present application is mainly introduced from the perspective of interaction between the sending end and the receiving end. It is to be understood that the transmitting end and the receiving end include hardware structures and/or software modules for performing the respective functions in order to implement the above functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the sending end, the receiving end, and the like may be divided according to the above method examples, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
In the case of an integrated unit, fig. 7A shows a possible structural diagram of the transmitting end involved in the above embodiment. The transmitting end 700 includes: a processing unit 702 and a communication unit 703. The processing unit 702 is configured to control and manage actions of the transmitting end 700, for example, the processing unit 702 is configured to support the transmitting end 700 to perform S201 and S203 of fig. 2 and/or other processes for the technology described herein through the communication unit 703. The communication unit 703 is configured to support communication between the transmitting end 700 and other network entities, for example, communication between the receiving end shown in fig. 2. The sender 700 may further comprise a storage unit 701 for storing program codes and data of the sender 700.
The Processing Unit 702 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 703 may be a transceiver, a transceiver circuit, or the like. The memory unit 701 may be a memory.
When the processing unit 702 is a processor, the communication unit 703 is a transceiver, and the storage unit 701 is a memory, the transmitting end according to the embodiment of the present application may be the transmitting end shown in fig. 7B.
Referring to fig. 7B, the transmitting end 710 includes: a processor 712, a transceiver 713, and a memory 711. The transceiver 713, the processor 712, and the memory 711 may communicate with each other via internal communication paths to transfer control and/or data signals.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Therefore, the transmitting end provided in the embodiment of the present application determines the second resource according to the configuration of the first resource, and transmits the RS according to the second resource, so as to transmit the reference signal without affecting the forward or backward compatibility of the NR system.
In case of using integrated units, fig. 8A shows a possible structure diagram of the receiving end involved in the above embodiment. The receiving end 800 includes: a processing unit 802 and a communication unit 803. The processing unit 802 is configured to control and manage actions of the receiving end 800, for example, the processing unit 802 is configured to support the receiving end 800 to execute S202 of fig. 2 through the communication unit 803, and/or other processes for the technology described herein. The communication unit 803 is configured to support communication between the receiving end 800 and other network entities, for example, between the transmitting end shown in fig. 2. The receiver 800 may further include a storage unit 801 for storing program codes and data of the receiver 800.
The processing unit 802 may be a processor or a controller, and may be, for example, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a transceiver, a transceiving circuit, or the like. The storage unit 801 may be a memory.
When the processing unit 802 is a processor, the communication unit 803 is a transceiver, and the storage unit 801 is a memory, the receiving end according to the embodiment of the present application may be the receiving end shown in fig. 8B.
Referring to fig. 8B, the receiving end 810 includes: processor 812, transceiver 813, memory 811. The transceiver 813, the processor 812, and the memory 811 may communicate with each other via internal connection paths, passing control and/or data signals.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Therefore, the receiving end provided in the embodiment of the present application determines the second resource according to the configuration of the first resource, and receives the RS according to the second resource, thereby transmitting the reference signal without affecting the forward or backward compatibility of the NR system.
In the embodiment of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic of the processes, and should not limit the implementation processes of the embodiment of the present application.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The steps of a method or algorithm described in connection with the disclosure of the embodiments of the application may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in either the transmitting end or the receiving end. Of course, the processor and the storage medium may reside as discrete components in a transmitting end or a receiving end.
Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.
Claims (16)
1. A method of transmitting reference signals, the method comprising:
the method comprises the steps that a base station determines a second resource according to an offset and the position of a first resource, the position of the first resource coincides with the position of a resource used for transmitting a first reference signal, the position of the second resource does not coincide with the position of the first resource, the offset is information preset in the base station, the difference between the second resource and the first resource is resources of a plurality of symbols and a plurality of subcarriers, the first resource is at least used for transmitting a reference signal of a Long Term Evolution (LTE) system, and the reference signal of the LTE system comprises a Cell Reference Signal (CRS);
and the base station sends the first reference signal to the terminal equipment through the second resource, wherein the first reference signal is a reference signal of a new wireless NR system.
2. The method of claim 1,
the second resource differs from the first resource by one or more symbols.
3. The method of claim 1 or 2, wherein the offset is at least one symbol.
4. The method according to claim 1 or 2,
the cyclic prefix of the first reference signal is a normal cyclic prefix;
the subcarrier spacing of the first reference signal is 15 kHz.
5. The method of claim 1 or 2, wherein the base station determines the second resource according to the offset and the position of the first resource, comprising:
and the base station determines the second resource according to the position of the first resource, the offset and a position parameter, wherein the position parameter comprises at least one parameter of a frame number of a subframe for transmitting the first reference signal and a port number of an antenna port for transmitting the first reference signal.
6. The method according to claim 1 or 2, wherein the location of the second resource is at least one location in the set { (i, k), i { (i, k) } 0, 1, 2, 3, 4, 5, and 6, k { (i, k) }, (i, k) represents a resource located at an ith symbol and a kth subcarrier in one physical resource block, wherein the physical resource block is a resource block including 7 symbols and 12 subcarriers with reference to a subcarrier spacing of 15kHz, and (i, k) satisfies the following condition:
i ═ m +7) mod7, where m represents a time offset between a first symbol index and a second symbol index, m is an integer greater than or equal to 0, where n represents the first symbol index, n ═ 0, 1, 2, 3, 4, 5, and 6, where (n-m +7) mod7 represents the remainder of (n-m +7) divided by 7,
when n is 0, k is not equal to 0 and 6; or,
when n is 4, k is not equal to 3 and 9; or,
when n is 0 or 1 or 4, k is not equal to 0, 3, 6 and 9.
7. The method according to claim 1 or 2, characterized in that the method further comprises:
and the base station sends indication information to the terminal equipment, wherein the indication information is used for indicating the mapping mode of the first reference signal.
8. A method of transmitting reference signals, the method comprising:
the method comprises the steps that terminal equipment determines a second resource according to an offset and the position of a first resource, wherein the position of the first resource coincides with the position of a resource used for transmitting a first reference signal, the position of the second resource does not coincide with the position of the first resource, the offset is information preset in a base station, the difference between the second resource and the first resource is resources of a plurality of symbols and a plurality of subcarriers, the first resource is at least used for transmitting a reference signal of a Long Term Evolution (LTE) system, and the reference signal of the LTE system comprises a Cell Reference Signal (CRS);
the terminal device receives the first reference signal from the base station through the second resource, and the first reference signal is a reference signal of a new wireless NR system.
9. The method of claim 8,
the second resource differs from the first resource by one or more symbols.
10. The method of claim 8 or 9, wherein the offset is at least one symbol.
11. The method according to claim 8 or 9,
the cyclic prefix of the first reference signal is a normal cyclic prefix;
the subcarrier spacing of the first reference signal is 15 kHz.
12. The method of claim 8 or 9, wherein the terminal device determines the second resource according to the offset and the position of the first resource, comprising:
and the terminal equipment determines the second resource according to the position of the first resource, the offset and a position parameter, wherein the position parameter comprises at least one parameter of a frame number of a subframe for sending the first reference signal and a port number of an antenna port for sending the first reference signal.
13. The method according to claim 8 or 9, wherein the location of the second resource is at least one location in a set { (i, k), i { (i, k) } 0, 1, 2, 3, 4, 5, and 6, k { (i, k) }, (i, k) represents a resource located at an ith symbol and a kth subcarrier in one physical resource block, wherein the physical resource block is a resource block including 7 symbols and 12 subcarriers with reference to a subcarrier spacing of 15kHz, and (i, k) satisfies the following condition:
i ═ m +7) mod7, where m represents a time offset between a first symbol index and a second symbol index, m is an integer greater than or equal to 0, where n represents the first symbol index, n ═ 0, 1, 2, 3, 4, 5, and 6, where (n-m +7) mod7 represents the remainder of (n-m +7) divided by 7,
when n is 0, k is not equal to 0 and 6; or,
when n is 4, k is not equal to 3 and 9; or,
when n is 0 or 1 or 4, k is not equal to 0, 3, 6 and 9.
14. The method according to claim 8 or 9, characterized in that the method further comprises:
the terminal equipment receives indication information from the base station, wherein the indication information is used for indicating the mapping mode of the first reference signal.
15. An apparatus for transmitting a reference signal, the apparatus comprising a processor and a transceiver, the processor to invoke program instructions stored in a memory to cause the apparatus to implement the method of any one of claims 1-14.
16. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 14.
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|---|
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