CN116781120A - PUSCH transmission method, terminal and network side equipment - Google Patents

PUSCH transmission method, terminal and network side equipment Download PDF

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Publication number
CN116781120A
CN116781120A CN202210228037.4A CN202210228037A CN116781120A CN 116781120 A CN116781120 A CN 116781120A CN 202210228037 A CN202210228037 A CN 202210228037A CN 116781120 A CN116781120 A CN 116781120A
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China
Prior art keywords
srs
port
precoding matrix
terminal
pusch transmission
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Inventor
孙荣荣
刘昊
塔玛拉卡·拉盖施
宋扬
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN202210228037.4A priority Critical patent/CN116781120A/en
Priority to PCT/CN2023/080139 priority patent/WO2023169430A1/en
Publication of CN116781120A publication Critical patent/CN116781120A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a PUSCH transmission method, a terminal and network side equipment, belonging to the technical field of communication, wherein the PUSCH transmission method comprises the following steps: the terminal determines a second precoding matrix according to the two first precoding matrices, wherein the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer; and the terminal sends the PUSCH according to the second precoding matrix.

Description

PUSCH transmission method, terminal and network side equipment
Technical Field
The application belongs to the technical field of communication, and particularly relates to a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) transmission method, a terminal and network side equipment.
Background
With the development of communication technology, a terminal may use antennas with more ports (such as 6 ports or 8 ports) for uplink transmission, however, in the related art, a precoding matrix is designed only for 4-port antenna transmission, which is not suitable for a terminal using 6-port or 8-port antenna transmission, and affects the communication performance of the terminal.
Disclosure of Invention
The embodiment of the application provides a PUSCH transmission method, a terminal and network side equipment, which can solve the problem that the communication performance of the terminal is affected because the terminal is not supported to use more ports for antenna transmission in the related technology.
In a first aspect, a PUSCH transmission method is provided, including: the terminal determines a second precoding matrix according to the two first precoding matrices, wherein the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer; and the terminal sends the PUSCH according to the second precoding matrix.
In a second aspect, a PUSCH transmission method is provided, including: the network side equipment sends DCI, wherein the DCI is used for indicating two first precoding matrixes, the two first precoding matrixes are used for determining a second precoding matrix by the terminal, the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
In a third aspect, a PUSCH transmission apparatus is provided, including: a determining module, configured to determine a second precoding matrix according to the two first precoding matrices, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer; and a sending module, configured to send PUSCH according to the second precoding matrix.
In a fourth aspect, there is provided a PUSCH transmission apparatus including: a sending module, configured to send DCI, where the DCI is used to indicate two first precoding matrices, where the two first precoding matrices are used for determining a second precoding matrix by a terminal, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.
In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine a second precoding matrix according to two first precoding matrices, where the second precoding matrix is used for PUSCH transmission of K ports, K is a positive integer, and the communication interface is configured to send PUSCH according to the second precoding matrix.
In a seventh aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the second aspect.
In an eighth aspect, a network side device is provided, including a processor and a communication interface, where the communication interface is configured to send DCI, where the DCI is configured to indicate two first precoding matrices, where the two first precoding matrices are used by a terminal to determine a second precoding matrix, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
In a ninth aspect, there is provided a PUSCH transmission system including: a terminal operable to perform the steps of the method as described in the first aspect, and a network side device operable to perform the steps of the method as described in the second aspect.
In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the second aspect.
In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions, implementing the steps of the method as described in the first aspect, or implementing the steps of the method as described in the second aspect.
In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method as described in the first aspect or to implement the steps of the method as described in the second aspect.
In the embodiment of the application, the terminal can determine a second precoding matrix according to the two first precoding matrices, and perform PUSCH transmission of the K ports according to the second precoding matrix. The embodiment of the application can use two precoding matrixes supporting the PUSCH transmission with fewer ports to realize the PUSCH transmission with multiple ports, thereby being beneficial to improving the communication performance of the terminal.
Drawings
Fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a PUSCH transmission method according to an embodiment of the application;
fig. 3 is a schematic flowchart of a PUSCH transmission method according to an embodiment of the application;
fig. 4 is a schematic structural diagram of a PUSCH transmission device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a PUSCH transmission device according to an embodiment of the present application;
fig. 6 is a schematic structural view of a communication device according to an embodiment of the present application;
fig. 7 is a schematic structural view of a terminal according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a network side device according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.
It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) th Generation, 6G) communication system.
Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited.
The method for transmitting the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) provided by the embodiment of the application is described in detail below through some embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 2, an embodiment of the present application provides a PUSCH transmission method 200, which may be performed by a terminal, in other words, by software or hardware installed in the terminal, the method including the following steps.
S202: the terminal determines a second precoding matrix according to the two first precoding matrices, wherein the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
In this embodiment, the two first precoding matrices may be indicated by the network-side device, for example, before S202, the terminal may receive downlink control information (Downlink Control Information, DCI), which may be used to indicate the two first precoding matrices and so on.
Of the two first precoding matrices, one may be a precoding matrix supporting M-port PUSCH transmission, and the other may be a precoding matrix supporting N-port PUSCH transmission, where m+n=k, and M and N are positive integers. For example, the value of K may be 6 or 8, and when K is 6, the values of M and N may be 2 and 4, respectively; for another example, when K is 8, the values of M and N may both be 4.
The first precoding matrix may be a precoding matrix configured by the network side device for the terminal in the related art, for example, the first precoding matrix may be a precoding matrix supporting 4-port PUSCH transmission, such as
Etc.
For another example, the first precoding matrix may be a precoding matrix supporting 2-port PUSCH transmission, such as
Etc.
In one example, the second precoding matrix determined by the terminal may be one of:
wherein W is 1 And W is 2 For the first pre-coding matrix to be used,and alpha is a coefficient which may be a phase, amplitude or coefficient matrix, e.g. [1j ]] T Etc.
In the second precoding matrix, the "0" in the upper right corner indicates: and W is equal to 1 Is equal to the number of lines of W 2 All 0 matrices with equal columns; the "0" in the lower left corner indicates: and W is equal to 1 Is equal to W 2 All 0 matrices of equal number of rows, here two allThe 0 matrix may be configured or indicated by the network side device, or according to W 1 ，W 2 And (5) determining.
S204: and the terminal sends the PUSCH according to the second precoding matrix.
In this step, the terminal may perform precoding processing on the uplink data according to the second precoding matrix, and then map the uplink data after the precoding processing onto a PUSCH resource for transmission.
According to the PUSCH transmission method provided by the embodiment of the application, the terminal can determine a second precoding matrix according to the two first precoding matrices, and perform the PUSCH transmission of the K ports according to the second precoding matrix. The embodiment of the application can use two precoding matrixes supporting the PUSCH transmission with fewer ports to realize the PUSCH transmission with multiple ports, thereby being beneficial to improving the communication performance of the terminal.
Meanwhile, the embodiment of the application does not need to reconfigure the precoding matrix, has little change to the existing protocol, for example, can realize 8Tx transmission without introducing a new 8Tx (transmission) precoding matrix, has simple terminal realization and is beneficial to less resource expenditure.
Optionally, before the terminal determines a second precoding matrix according to the two first precoding matrices, the method further includes: the terminal receives configuration information comprising one or two sets of sounding reference signal (Sounding Reference Signal, SRS) resources for codebook transmission.
In the case that the configuration information includes one SRS resource set, the one SRS resource set may include one of the following 1) to 3):
1) At least one SRS of a K port, the SRS of the K port being used for PUSCH transmission of the K port. For example, the configuration information configures the terminal with an SRS resource set for codebook transmission, where the SRS resource set includes at least one 8 antenna transmission (Tx) SRS, i.e., 8-port SRS, for 8Tx PUSCH transmission, i.e., K is 8.
2) At least one SRS of an M-port and at least one SRS of an N-port, m+n=k, M and N being positive integers, the SRS of the M-port and the SRS of the N-port being used for PUSCH transmission of the K-port. For example, the configuration information configures an SRS resource set for the terminal for codebook transmission, where the SRS resource set includes at least two 4-port SRS, i.e. M and N are both 4, and k is 8.
In this embodiment, the two first precoding matrices may be an M-port precoding matrix and an N-port precoding matrix, respectively.
Optionally, the SRS of the M port in the one SRS resource set may be associated with the SRS of the N port, specifically by at least one of the following ways: a) The configuration information is explicitly configured; b) Associating the same spatial relationship, wherein the spatial relationship may be a beam, a transmission configuration indication (Transmission Configuration Indicator, TCI) state, a path loss reference signal, etc.; c) Predefined, as agreed upon by the protocol, the protocol may agree on the associated SRS; d) And determining according to the SRS resource index size.
3) And the SRS of the K ports is used for PUSCH transmission of the K ports. For example, the configuration information configures an SRS resource set for the terminal for codebook transmission, where the SRS resource set includes 8-port SRS resources and 4-port SRS resources, i.e. L is 4 and k is 8.
Optionally, in a case that the terminal is configured with a full power transmission mode, the one SRS resource set includes at least one SRS of a K port and at least one SRS of an L port; wherein the SRS of the K port is used for PUSCH transmission of the K port.
In the case that the configuration information includes two SRS resource sets, one SRS resource set includes at least one M-port SRS, the other SRS resource set includes at least one N-port SRS, m+n=k, M and N are positive integers, and the M-port SRS and the N-port SRS are used for PUSCH transmission of the K-port.
Optionally, the power control parameters of the two SRS resource sets are the same. According to the embodiment, the same transmitting power of SRS in the two SRS resource sets can be ensured as much as possible, so that the network side equipment can obtain the channel condition according to the received SRS, further calculate the precoding matrix of uplink transmission, and improve the communication performance.
For example, the configuration information configures two SRS resource sets for codebook transmission for the terminal, each SRS resource set includes at least one 4-port SRS, and power control parameters configured by the two SRS resource sets are the same; two SRS from the two SRS resource sets are used for 8Tx PUSCH transmission, i.e. M and N are both 4, k is 8.
Optionally, on the basis of the foregoing embodiments, before the terminal determines a second precoding matrix according to the two first precoding matrices, the method further includes: the terminal receives DCI, wherein the DCI is used for indicating the two first precoding matrixes.
The DCI may include at least one SRS resource indication (SRS Resource Indicator, SRI) field for indicating an SRS for the PUSCH transmission.
Optionally, in the case that the configuration information received by the terminal configures an SRS resource set for the terminal, the DCI includes an SRI field; in case that the configuration information received by the terminal includes two SRS resource sets, the DCI includes one SRI domain or two SRI domains. Optionally, in a case that the configuration information configures two SRS resource sets for the terminal, and the DCI includes one SRI field, the one SRI field indicates SRS in the two SRS resource sets at the same time.
Optionally, in a case that the configuration information received by the terminal includes one SRS resource set, and the one SRS resource set, the SRS of the M port is associated with the SRS of the N port, the bit length of the SRI field is determined by the number of groups of the associated SRS. The number of the correlated SRS (resources) is a set, the value of the SRI field is mapped to a set of SRS resources, it can be understood that the larger the number of the correlated SRS sets, the larger the bit length of the SRI field.
Optionally, in the case that the SRI field indicates SRS of K ports, the PUSCH is transmitted with K ports, for example, the SRI field indicates SRS of 8 ports, which indicates that PUSCH is transmitted with 8 Tx; in the case that the SRI field indicates both the SRS of the M port and the SRS of the N port, the PUSCH is transmitted with K ports, for example, if the SRI indicates two associated SRS of 4 ports, it indicates that the PUSCH is transmitted with 8Tx, that is, M and N are both 4, and K is 8.
Based on the above embodiments, the DCI received by the terminal may further include two transmission precoding matrix indicator (Transmitted Precoding Matrix Indicator, TPMI) fields, where the two TPMI fields are used to indicate the two first precoding matrices, for example, one TPMI field indicates one first precoding matrix.
Optionally, the method further comprises: the terminal selects the two first precoding matrices from two codebook subsets according to the two TPMI fields, wherein the two codebook subsets can be configured by radio resource control (Radio Resource Control, RRC), and the coherence type of the two codebook subsets can also be configured by RRC.
Optionally, the method further comprises: the terminal determines the two codebook subsets from a plurality of codebook subsets according to at least one of:
1) The number of ports of the precoding matrix contained in the codebook subset;
in this embodiment, the number of ports of the precoding matrix included in the two codebook subsets selected by the terminal is determined by one of the following: a) The configuration of the SRS configured for the terminal, for example, the port numbers are M and N, respectively, where the configuration of the SRS mentioned herein may refer to the content of the foregoing configuration information; b) And a preset value is obtained, for example, the protocol pre-agrees with the port numbers of the precoding matrixes contained in the two codebook subsets, for example, for 8-port SRS, the two codebook subsets are respectively 4-port.
2) The coherence type of the codebook subset;
in this embodiment, the terminal may determine the two codebook subsets according to the PUSCH transmission of the K-port (antenna port coherence type). For example, the network side device configures the antenna port coherence type of the 8Tx transmission through RRC, and the terminal determines two codebook subsets through the antenna port coherence type. Or the network side configures the coherence type of the codebook subset transmitted by 8Tx, and the terminal determines the precoding coherence type of the two codebook subsets according to the coherence type of the codebook subset transmitted by 8 Tx.
3) Maximum rank information corresponding to the codebook subset.
In this embodiment, the maximum rank information corresponding to the two TPMI domains may be equal to the maximum rank information corresponding to the two codebook subsets.
The coherence type of the two codebook subsets may include at least one of: full-coherence and full-coherence { full-coherence; full-coherent, partially coherent { partial-coherent }; partial-coherent, incoherent { non-coherent }; non-coherent, partially incoherent { partial-non-coherent }; partial-non-coherent, all partial incoherent { full-partial-non-coherent }; full-partial-non-pixel }.
Optionally, the method further comprises: and the terminal determines the two codebook subsets according to the antenna port coherence type of the PUSCH transmission of the K port, wherein the antenna port coherence type can be configured by RRC signaling. For example, the network side device configures the antenna port coherence type of the 8Tx transmission through RRC, and the terminal determines two codebook subsets through the antenna port coherence type. Or the network side configures the coherence type of the codebook subset transmitted by 8Tx, and the terminal determines the precoding coherence type of the two codebook subsets according to the coherence type of the codebook subset transmitted by 8 Tx.
Optionally, in case the antenna port coherence type is K port full coherence, the two codebook subsets are full coherence and full coherence. For example, the antenna port coherence type is 8-port full coherence, and the two codebook subsets corresponding to the two TPMI are full coherence and full coherence { full-coherence; full-sphere }.
Optionally, in the case that the K ports are divided into two groups, and the antenna ports within each group are fully coherent, the two codebook subsets are one of the following: all partially incoherent and all partially incoherent, all coherent and partially coherent. For example, the 8 ports are divided into two groups, each group has 4 antenna ports fully coherent (4+4), and the two codebook subsets corresponding to the two TPMI are at least one of the following: all incoherent and all incoherent { full-partial-non-coherent; full-partial-non-existence }; full-coherence and partial coherence { full-coherence; full-sphere }.
Optionally, in the case that the K ports are divided into two groups, and two coherent antenna ports exist in each group, the two codebook subsets are one of the following: partially coherent and partially coherent, partially incoherent and partially incoherent. For example, the 8 ports are divided into two groups, 2 antenna ports in each group of 4 antenna ports are a group of coherent ports (2+2+2+2), in which case the two codebook subsets corresponding to the two TPMI are at least one of the following: partial coherence and partial coherence { partial-coherence; partial-local }; partially incoherent and partially incoherent { partial-non-coherent; partial-non-local }.
Optionally, in the case that the K ports are divided into two groups, where the antenna ports in the first group are fully coherent, and one part of the antenna ports in the second group are fully coherent, and the other part of the antenna ports are fully coherent, the two codebook subsets are one of the following: all partially incoherent and partially incoherent, all coherent and partially coherent. For example, the 8 ports are divided into two groups, 4 antenna ports in one group of antenna ports are fully coherent, 2 antenna ports in the other group of antenna ports are a group of coherent ports (4+2+2), and in this case, the two codebook subsets corresponding to the two TPMI are at least one of the following: all-part incoherent { full-partial-non; partial-non-local }; full-coherence and partial coherence { full-coherence; partial-local }.
The full coherence, partial coherence, and incoherent codebook subset satisfy the precoding matrix of the following table 1 for TPMI index:
TABLE 1
Optionally, in a case that the DCI received by the terminal includes two TPMI domains, the terminal selects the two first precoding matrices from two codebook subsets according to the two TPMI domains, the method further includes: the terminal determines maximum rank information (e.g., maximum rank) corresponding to the two codebook subsets according to at least one of the following 1) to 3):
1) RRC signaling configuration; the RRC signaling is configured with maximum rank information corresponding to the two codebook subsets, respectively.
2) The maximum rank corresponding to the first codebook subset is A and the maximum rank corresponding to the second codebook subset is (R max -a); wherein A is R max Half of the number of R is rounded up or rounded down, R is max May be configured for RRC signaling;
3) The maximum rank corresponding to the first codebook subset and the second codebook subset is the port number indicated by SRS domain and R max The smallest of (a) is min { SRS domain indicated port number, R max -said R max May be configured for RRC signaling.
Optionally, in the case that the DCI received by the terminal includes two TPMI domains, the method further includes: the terminal determines the bit length and meaning of the two TPMI fields according to the two codebook subsets, wherein the bit length and meaning of the TPMI fields are shown in table 2 and table 3.
TABLE 2TPMI Domain interpretation Table
TABLE 3TPMI Domain interpretation Table
The foregoing embodiments are described by taking the example that both TPMI fields are valid, and there may be cases where one of the two TPMI fields is invalid. Optionally, in the case that the DCI received by the terminal includes two TPMI domains, the method further includes: the terminal determines invalid ones of the two TPMI domains according to at least one of:
1) Whether a reserved code point is indicated, e.g., TPMI field indicating the reserved code point is invalid.
2) Whether a codeword is enabled, e.g., if a second codeword in the DCI is not enabled, one of the TPMI fields is disabled.
3) Whether the indicated precoding matrix combination exceeds the maximum rank limit, e.g. if a precoding matrix combination exceeding the maximum rank limit is indicated, i.e. the indicated combination of ranks of the two first precoding matrices exceeds the maximum rank limit, the second TPMI domain is not valid.
Optionally, in the case that the DCI received by the terminal includes an SRI field and two TPMI fields, the method further includes: in the case that the SRI field in the DCI indicates that SRS of a J port is used for PUSCH transmission and J is less than K, the terminal only interprets the first TPMI field of the two TPMI fields, and of course, the terminal may normally interpret an indication field other than the TPMI field in the DCI; or, the terminal jointly interprets the two TPMI domains; wherein J is a positive integer, and J can be 2 or 4.
This embodiment, for example, where k=8, when the SRI field indicates that a 4-port or 2-port SRS resource is used for PUSCH transmission, the terminal interprets only the first one of the two TPMI fields, or the terminal interprets both TPMI fields as one TPMI field jointly.
Optionally, in the case that the DCI received by the terminal includes two TPMI fields, the DCI may further include a first indication field, where the first indication field is used to indicate one of the following: the first TPMI domain is active; the second TPMI domain is active; both TPMI domains are active; and under the condition that the TPMI domain is valid, the terminal interprets the TPMI domain, or the terminal uplink transmission adopts the parameters indicated by the valid TPMI domain.
Optionally, in the case that the DCI received by the terminal includes two TPMI fields, the DCI may further include a second indication field, where the second indication field is used to indicate coefficients of the two first precoding matrices, where the coefficients are used to calculate the second precoding matrix, and the coefficients may be a phase, amplitude, or coefficient matrix.
In one example, the second precoding matrix is one of:
wherein W is 1 And W is 2 For the two first precoding matrices, W 1 And W is 2 Respectively associating different SRSs;and alpha is a coefficient, which can be indicated by DCI, e.g. { [1 0 ]]；[0 1]；[1 1]；[1 j]}。
For example, the number of the cells to be processed,
wherein W is 1 And W is 2 For the first precoding matrix, W 1 And W is 2 Indicated by the two TPMI fields, right of the equal sign is the second precoding matrix.
It can be seen that the transmission rank of the second precoding matrix is W 1 And W is 2 Is the sum of the ranks of the W 1 And W is 2 The rank may satisfy a certain condition, e.g., the terminal does not expect W 1 And W is 2 Is: 3+2;1+4;4+1;4+2;2+4;4+3.
Optionally, the transmission rank of the second precoding matrix does not exceed a maximum transmission rank, which may be configured by the network side device.
Optionally, in various embodiments of the present application, the rank of the second precoding matrix is a sum of ranks of the valid first precoding matrix.
Optionally, in the case that the DCI received by the terminal includes two TPMI domains, the method further includes: one of the two TPMI fields indicates an invalid code point or an invalid precoding matrix, and the other one indicates an effective precoding matrix W 1 In the case of (2), the terminal is based on W 1 Determining a third precoding matrix for PUSCH transmission, the third precoding matrix being one of:
optionally, the method further comprises: the terminal determines the number of code words transmitted by the PUSCH of the K port according to the precoding indication; wherein two codewords are enabled when the transmission rank is greater than a first value and/or are enabled when the two TPMI domains are active. The first codeword is mapped to P transmission layers, the second codeword is mapped to Q transmission layers, and P is W 1 Rank number, Q is W 2 Rank number, W 1 And W is 2 For the two first precoding matrices, and/or, P and Q are predefined, P and Q are positive integers, e.g., P and Q are agreed by a protocol, such as: (P, Q) = (2, 3), (3, 4), (4, 4), and the like.
The PUSCH transmission method according to the embodiment of the present application is described in detail above in connection with fig. 2. A PUSCH transmission method according to another embodiment of the present application will be described in detail below with reference to fig. 3. It will be appreciated that the interaction of the network side device with the terminal described from the network side device is the same as or corresponds to the description of the terminal side in the method shown in fig. 2, and the relevant description is omitted as appropriate to avoid repetition.
Fig. 3 is a schematic flow chart of implementation of a PUSCH transmission method according to an embodiment of the present application, which may be applied to a network side device. As shown in fig. 3, the method 300 includes the following steps.
S302: the network side equipment sends DCI, wherein the DCI is used for indicating two first precoding matrixes, the two first precoding matrixes are used for determining a second precoding matrix by the terminal, the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
According to the PUSCH transmission method provided by the embodiment of the application, the network side equipment sends DCI, wherein the DCI is used for indicating two first precoding matrixes, the two first precoding matrixes are used for determining a second precoding matrix by the terminal, and the second precoding matrix is used for PUSCH transmission of K ports. The embodiment of the application can use two precoding matrixes supporting the PUSCH transmission with fewer ports to realize the PUSCH transmission with multiple ports, thereby being beneficial to improving the communication performance of the terminal.
Optionally, as an embodiment, before the network side device sends DCI, the method further includes: the network side equipment sends configuration information, wherein the configuration information comprises one or two SRS resource sets for codebook transmission; the one SRS resource set includes one of: SRS for at least one K port; at least one M-port SRS and at least one N-port SRS; at least one K-port SRS and at least one L-port SRS; one SRS resource set comprises at least one SRS of an M port, and the other SRS resource set comprises at least one SRS of an N port; the SRS of the K port is used for PUSCH transmission of the K port; m+n=k, M, N and L are positive integers, L is smaller than K, and SRS of the M port and SRS of the N port are used for PUSCH transmission of the K port.
Optionally, as an embodiment, the DCI includes at least one SRI field, where the SRI field is used to indicate an SRS, where the SRS is used for the PUSCH transmission.
Optionally, as an embodiment, the DCI includes two TPMI fields, where the two TPMI fields are used to indicate the two first precoding matrices.
According to the PUSCH transmission method provided by the embodiment of the present application, the execution body may be a PUSCH transmission device. In the embodiment of the present application, a PUSCH transmission method performed by a PUSCH transmission device is taken as an example, and the PUSCH transmission device provided in the embodiment of the present application is described.
Fig. 4 is a schematic structural diagram of a PUSCH transmission apparatus according to an embodiment of the present application, which may correspond to a terminal in other embodiments. As shown in fig. 4, the apparatus 400 includes the following modules.
A determining module 402, configured to determine a second precoding matrix according to the two first precoding matrices, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
A transmitting module 404, configured to transmit PUSCH according to the second precoding matrix.
According to the PUSCH transmission device provided by the embodiment of the application, a second precoding matrix can be determined according to the two first precoding matrices, and the PUSCH transmission of the K ports is performed according to the second precoding matrix. The embodiment of the application can use two precoding matrixes supporting the PUSCH transmission with fewer ports to realize the PUSCH transmission with multiple ports, thereby being beneficial to improving the communication performance of the terminal.
Optionally, as an embodiment, the apparatus further includes a receiving module, configured to receive configuration information, where the configuration information includes one or two SRS resource sets for codebook transmission; the one SRS resource set includes one of: SRS for at least one K port; at least one M-port SRS and at least one N-port SRS; at least one K-port SRS and at least one L-port SRS; one SRS resource set comprises at least one SRS of an M port, and the other SRS resource set comprises at least one SRS of an N port; the SRS of the K port is used for PUSCH transmission of the K port; m+n=k, M, N and L are positive integers, L is smaller than K, and SRS of the M port and SRS of the N port are used for PUSCH transmission of the K port.
Optionally, as an embodiment, the SRS of the M port and the SRS of the N port in the one SRS resource set are associated by at least one of the following ways: the configuration information is explicitly configured; correlating the same spatial relationships; the protocol conventions are predefined; and determining according to the index size of the SRS resource.
Optionally, as an embodiment, the power control parameters of the two SRS resource sets are configured to be the same.
Optionally, as an embodiment, in a case that the terminal configures a full power transmission mode, the one SRS resource set includes at least one K-port SRS and at least one L-port SRS, where the K-port SRS is used for PUSCH transmission of the K-port.
Optionally, as an embodiment, the apparatus further includes a receiving module, configured to receive DCI, where the DCI is used to indicate the two first precoding matrices.
Optionally, as an embodiment, the DCI includes at least one SRI field, where the SRI field is used to indicate an SRS, where the SRS is used for the PUSCH transmission.
Optionally, as an embodiment, in a case that the configuration information configures one SRS resource set for the apparatus, the DCI includes one SRI field; in case the configuration information configures two SRS resource sets for the apparatus, the DCI includes one SRI field or two SRI fields.
Optionally, as an embodiment, the SRS of the M port is associated with the SRS of the N port in the one SRS resource set; wherein the bit length of the SRI field is determined by the number of groups of the associated SRS; wherein the associated SRS is a group.
Optionally, as an embodiment, in a case where the SRI field indicates SRS of K port, the PUSCH employs K port transmission; and under the condition that the SRI domain simultaneously indicates the SRS of the M port and the SRS of the N port, the PUSCH adopts K port transmission.
Optionally, as an embodiment, the DCI includes two TPMI fields, where the two TPMI fields are used to indicate the two first precoding matrices.
Optionally, as an embodiment, the apparatus further includes a selecting module configured to select the two first precoding matrices from two codebook subsets according to the two TPMI fields.
Optionally, as an embodiment, the determining module 402 is further configured to determine the two codebook subsets from the plurality of codebook subsets according to at least one of: 1) The number of ports of the precoding matrix contained in the codebook subset; 2) The coherence type of the codebook subset; 3) Maximum rank information corresponding to the codebook subset.
Optionally, as an embodiment, the number of ports of the precoding matrix contained in the two codebook subsets is determined by one of the following: configuration of SRS configured for the apparatus; a defined value.
Optionally, as an embodiment, the coherence type of the two codebook subsets includes at least one of: full and full, partial and partial, incoherent and incoherent, partial and incoherent, all partial and all partial incoherent.
Alternatively, as an embodiment, the coherence type of the two codebook subsets is configured by RRC.
Optionally, as an embodiment, the determining module 402 is further configured to determine the two codebook subsets according to an antenna port coherence type of PUSCH transmission of the K port.
Optionally, as an embodiment, in case the antenna port coherence type is K port full coherence, the two codebook subsets are full coherence and full coherence; in the case where the K ports are divided into two groups, the antenna ports within each group are fully coherent, the two codebook subsets are one of the following: all partially incoherent and all partially incoherent, all coherent and partially coherent; in the case where the K ports are divided into two groups, and there are two groups of coherent antenna ports in each group, the two codebook subsets are one of the following: partially coherent and partially coherent, partially incoherent and partially incoherent; and in the case that the K ports are divided into two groups, the antenna ports in the first group are fully coherent, one part of the antenna ports in the second group are fully coherent, and the other part of the antenna ports are fully coherent, the two codebook subsets are one of the following: all partially incoherent and partially incoherent, all coherent and partially coherent.
Optionally, as an embodiment, the determining module 402 is further configured to determine maximum rank information corresponding to the two codebook subsets according to at least one of: RRC signaling configuration; the RRC signaling is configured with maximum rank information corresponding to the two codebook subsets respectively; the maximum rank corresponding to the first codebook subset is A, and the maximum rank corresponding to the second codebook subset is R max -a; wherein A is R max Half of (2) is rounded up or rounded down; the maximum rank corresponding to the first codebook subset and the second codebook subset is the port number indicated by SRS domain and R max The smallest of (3); wherein the R is max Is configured for RRC signaling.
Optionally, as an embodiment, the determining module 402 is further configured to determine a bit length and a meaning of the two TPMI domains according to the two codebook subsets.
Optionally, as an embodiment, the determining module 402 is further configured to determine an invalid TPMI domain of the two TPMI domains according to at least one of: whether a reserved code point is indicated; whether the codeword is enabled; whether the indicated precoding matrix combination exceeds a maximum rank limit.
Optionally, as an embodiment, the determining module 402 is further configured to interpret only a first one of the two TPMI fields if the SRI field in the DCI indicates that SRS of a J port is used for PUSCH transmission and J is less than K; alternatively, the two TPMI domains are jointly interpreted; wherein J is a positive integer.
Optionally, as an embodiment, the DCI includes a first indication field, where the first indication field is used to indicate one of: the first TPMI domain is active; the second TPMI domain is active; both TPMI fields are active.
Optionally, as an embodiment, the DCI includes a second indication field, where the second indication field is used to indicate coefficients of the two first precoding matrices, and the coefficients are used to calculate the second precoding matrix.
Optionally, as an embodiment, the second precoding matrix is one of the following:
wherein W is 1 And W is 2 For the two first precoding matrices, W 1 And W is 2 Respectively associating different SRSs;and α is a coefficient.
Optionally, as an embodiment, the determining module 402 is further configured to indicate, in one of the two TPMI fields, an invalid code point or an invalid precoding matrix, and indicate, in the other TPMI field, an valid precoding matrix W 1 In the case of (1), according to W 1 Determining a third precoding matrix for PUSCH transmission, the third precoding matrix being one of:
optionally, as an embodiment, the determining module 402 is further configured to determine, according to a precoding indication, a number of codewords of PUSCH transmission of the K port; wherein two codewords are enabled when the transmission rank is greater than a first value and/or are enabled when the two TPMI domains are active.
Optionally, as an embodiment, the first codeword is mapped to P transport layers and the second codeword is mapped to Q transport layers in the two codewords; wherein P is a rank number of W1, Q is a rank number of W2, W1 and W2 are the two first precoding matrices, and/or P and Q are predefined, and P and Q are positive integers.
Optionally, as an embodiment, the rank of the second precoding matrix is a sum of ranks of the valid first precoding matrices.
The apparatus 400 according to the embodiment of the present application may refer to the flow of the method 200 corresponding to the embodiment of the present application, and each unit/module in the apparatus 400 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 200, and may achieve the same or equivalent technical effects, which are not described herein for brevity.
The PUSCH transmission device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.
Fig. 5 is a schematic structural diagram of a PUSCH transmission apparatus according to an embodiment of the present application, which may correspond to the network side device in other embodiments. As shown in fig. 5, the apparatus 500 includes the following modules.
A sending module 502, configured to send DCI, where the DCI is used to indicate two first precoding matrices, where the two first precoding matrices are used for determining a second precoding matrix by a terminal, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
In the PUSCH transmission device provided in the embodiment of the present application, the sending module 502 sends DCI, where the DCI is used to indicate two first precoding matrices, where the two first precoding matrices are used for determining a second precoding matrix by a terminal, and the second precoding matrix is used for PUSCH transmission of K ports. The embodiment of the application can use two precoding matrixes supporting the PUSCH transmission with fewer ports to realize the PUSCH transmission with multiple ports, thereby being beneficial to improving the communication performance of the terminal.
Optionally, as an embodiment, the sending module 502 is further configured to send configuration information, where the configuration information includes one or two SRS resource sets for codebook transmission; the one SRS resource set includes one of: SRS for at least one K port; at least one M-port SRS and at least one N-port SRS; at least one K-port SRS and at least one L-port SRS; one SRS resource set comprises at least one SRS of an M port, and the other SRS resource set comprises at least one SRS of an N port; the SRS of the K port is used for PUSCH transmission of the K port; m+n=k, M, N and L are positive integers, L is smaller than K, and SRS of the M port and SRS of the N port are used for PUSCH transmission of the K port.
Optionally, as an embodiment, the DCI includes at least one SRI field, where the SRI field is used to indicate an SRS, where the SRS is used for the PUSCH transmission.
Optionally, as an embodiment, the DCI includes two TPMI fields, where the two TPMI fields are used to indicate the two first precoding matrices.
The apparatus 500 according to the embodiment of the present application may refer to the flow of the method 300 corresponding to the embodiment of the present application, and each unit/module in the apparatus 500 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 300, and may achieve the same or equivalent technical effects, which are not described herein for brevity.
The PUSCH transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiments of fig. 2 to 3, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.
Optionally, as shown in fig. 6, the embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, where the memory 602 stores a program or instructions that can be executed on the processor 601, for example, when the communication device 600 is a terminal, the program or instructions implement the steps of the PUSCH transmission method embodiment when executed by the processor 601, and achieve the same technical effects. When the communication device 600 is a network side device, the program or the instruction, when executed by the processor 601, implements the steps of the PUSCH transmission method embodiment described above, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for determining a second precoding matrix according to the two first precoding matrices, the second precoding matrix is used for transmitting the PUSCH of the K ports, K is a positive integer, and the communication interface is used for transmitting the PUSCH according to the second precoding matrix. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.
The terminal 700 includes, but is not limited to: at least some of the components of the radio frequency unit 701, the network module 702, the audio output unit 703, the input unit 704, the sensor 705, the display unit 706, the user input unit 707, the interface unit 708, the memory 709, and the processor 710.
Those skilled in the art will appreciate that the terminal 700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 710 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.
It should be appreciated that in embodiments of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.
In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 701 may transmit the downlink data to the processor 710 for processing; in addition, the radio frequency unit 701 may send uplink data to the network side device. Typically, the radio unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
The memory 709 may be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 709 may include volatile memory or nonvolatile memory, or the memory 709 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 709 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.
Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 710.
The radio frequency unit 701 may be configured to send PUSCH according to the second precoding matrix.
The processor 710 may be configured to determine a second precoding matrix from the two first precoding matrices, where the second precoding matrix is used for PUSCH transmission for K ports, and K is a positive integer.
The terminal provided by the embodiment of the application can determine a second precoding matrix according to the two first precoding matrices, and perform the PUSCH transmission of the K ports according to the second precoding matrix. The embodiment of the application can use two precoding matrixes supporting the PUSCH transmission with fewer ports to realize the PUSCH transmission with multiple ports, thereby being beneficial to improving the communication performance of the terminal. The terminal 700 provided in the embodiment of the present application may further implement each process of the PUSCH transmission method embodiment described above, and may achieve the same technical effects, so that repetition is avoided and no further description is given here.
The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending DCI, the DCI is used for indicating two first precoding matrixes, the two first precoding matrixes are used for determining a second precoding matrix by a terminal, the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.
Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 8, the network side device 800 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84 and a memory 85. The antenna 81 is connected to a radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information via the antenna 81, and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes information to be transmitted, and transmits the processed information to the radio frequency device 82, and the radio frequency device 82 processes the received information and transmits the processed information through the antenna 81.
The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 83, and the baseband apparatus 83 includes a baseband processor.
The baseband device 83 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 8, where one chip, for example, a baseband processor, is connected to the memory 85 through a bus interface, so as to call a program in the memory 85 to perform the network device operation shown in the above method embodiment.
The network-side device may also include a network interface 86, such as a common public radio interface (common public radio interface, CPRI).
Specifically, the network side device 800 of the embodiment of the present application further includes: instructions or programs stored in the memory 85 and executable on the processor 84, the processor 84 invokes the instructions or programs in the memory 85 to perform the method performed by the modules shown in fig. 5, and achieve the same technical effects, and are not repeated here.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the PUSCH transmission method embodiment described above, and the same technical effect can be achieved, so that repetition is avoided, and no description is repeated here.
Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the PUSCH transmission method embodiment can be realized, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the PUSCH transmission method embodiment described above, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.
The embodiment of the application also provides a PUSCH transmission system, which comprises: the terminal can be used for executing the steps of the PUSCH transmission method, and the network side device can be used for executing the steps of the PUSCH transmission method.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (38)

1. The method for transmitting the PUSCH of the physical uplink shared channel is characterized by comprising the following steps:
the terminal determines a second precoding matrix according to the two first precoding matrices, wherein the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer;
and the terminal sends the PUSCH according to the second precoding matrix.
2. The method of claim 1, wherein before the terminal determines a second precoding matrix from the two first precoding matrices, the method further comprises: the terminal receives configuration information, wherein the configuration information comprises one or two SRS resource sets for codebook transmission;
the one SRS resource set includes one of: SRS for at least one K port; at least one M-port SRS and at least one N-port SRS; at least one K-port SRS and at least one L-port SRS;
One SRS resource set comprises at least one SRS of an M port, and the other SRS resource set comprises at least one SRS of an N port;
the SRS of the K port is used for PUSCH transmission of the K port; m+n=k, M, N and L are positive integers, L is smaller than K, and SRS of the M port and SRS of the N port are used for PUSCH transmission of the K port.
3. The method of claim 2, wherein the SRS for the M port and the SRS for the N port in the one SRS resource set are associated by at least one of:
the configuration information is explicitly configured;
correlating the same spatial relationships;
predefined;
and determining according to the index size of the SRS resource.
4. The method of claim 2, wherein the power control parameters for the two SRS resource sets are configured identically.
5. The method of claim 2, wherein the one SRS resource set includes at least one K-port SRS and at least one L-port SRS, the K-port SRS being used for PUSCH transmission for the K-port, if the terminal is configured with a full power transmission mode.
6. The method according to any of claims 1 to 5, wherein before the terminal determines a second precoding matrix from the two first precoding matrices, the method further comprises:
The terminal receives Downlink Control Information (DCI), wherein the DCI is used for indicating the two first precoding matrixes.
7. The method of claim 6, wherein the DCI includes at least one SRI field for indicating an SRS for the PUSCH transmission.
8. The method of claim 7, wherein the step of determining the position of the probe is performed,
under the condition that the configuration information configures an SRS resource set for the terminal, the DCI comprises an SRI domain;
in case that the configuration information configures two SRS resource sets for the terminal, the DCI includes one SRI domain or two SRI domains.
9. The method of claim 7, wherein the SRS of the M port is associated with the SRS of the N port in the one SRS resource set; wherein the bit length of the SRI field is determined by the number of groups of the associated SRS; wherein the associated SRS is a group.
10. The method of claim 7, wherein the step of determining the position of the probe is performed,
in the case that the SRI field indicates SRS of K ports, the PUSCH is transmitted using K ports;
and under the condition that the SRI domain simultaneously indicates the SRS of the M port and the SRS of the N port, the PUSCH adopts K port transmission.
11. The method of claim 6, wherein the DCI comprises two transmission precoding matrix indicator TPMI fields, the two TPMI fields being used to indicate the two first precoding matrices.
12. The method of claim 11, wherein the method further comprises:
the terminal selects the two first precoding matrices from two codebook subsets according to the two TPMI fields.
13. The method according to claim 12, wherein the method further comprises: the terminal determines the two codebook subsets from a plurality of codebook subsets according to at least one of:
the number of ports of the precoding matrix contained in the codebook subset;
the coherence type of the codebook subset;
maximum rank information corresponding to the codebook subset.
14. The method of claim 13, wherein the number of ports of the precoding matrix comprised by the two codebook subsets is determined by one of:
configuration of SRS configured for the terminal;
a defined value.
15. The method of claim 13, wherein the step of determining the position of the probe is performed,
the coherence type of the two codebook subsets comprises at least one of: full and full, partial and partial, incoherent and incoherent, partial and incoherent, all partial and all partial incoherent.
16. The method of claim 12, wherein the coherence type of the two codebook subsets is configured by RRC.
17. The method according to claim 12, wherein the method further comprises:
and the terminal determines the two codebook subsets according to the antenna port coherence type of the PUSCH transmission of the K port.
18. The method of claim 17, wherein the step of determining the position of the probe is performed,
in the case that the antenna port coherence type is K port full coherence, the two codebook subsets are full coherence and full coherence;
in the case where the K ports are divided into two groups, the antenna ports within each group are fully coherent, the two codebook subsets are one of the following: all partially incoherent and all partially incoherent, all coherent and partially coherent;
in the case where the K ports are divided into two groups, and there are two groups of coherent antenna ports in each group, the two codebook subsets are one of the following: partially coherent and partially coherent, partially incoherent and partially incoherent; and
in the case that the K ports are divided into two groups, the antenna ports in the first group are fully coherent, and one part of the antenna ports in the second group are fully coherent, and the other part of the antenna ports are fully coherent, the two codebook subsets are one of the following: all partially incoherent and partially incoherent, all coherent and partially coherent.
19. The method of claim 13, wherein the method further comprises:
the terminal determines maximum rank information corresponding to the two codebook subsets according to at least one of the following:
RRC signaling configuration; the RRC signaling is configured with maximum rank information corresponding to the two codebook subsets respectively;
the maximum rank corresponding to the first codebook subset is A, and the maximum rank corresponding to the second codebook subset is R max -a; wherein A is R max Half of (2) is rounded up or rounded down;
the maximum rank corresponding to the first codebook subset and the second codebook subset is the port number indicated by SRS domain and R max The smallest of (3);
wherein the R is max Is configured for RRC signaling.
20. The method of claim 13, wherein the method further comprises:
and the terminal determines the bit length and the meaning of the two TPMI domains according to the two codebook subsets.
21. The method of claim 11, wherein the method further comprises: the terminal determines invalid ones of the two TPMI domains according to at least one of:
whether a reserved code point is indicated;
whether the codeword is enabled;
whether the indicated precoding matrix combination exceeds a maximum rank limit.
22. The method of claim 11, wherein the method further comprises:
in the case that the SRI field in the DCI indicates that SRS of a J port is used for PUSCH transmission and J is less than K, the terminal interprets only the first one of the two TPMI fields; or, the terminal jointly interprets the two TPMI domains; wherein J is a positive integer.
23. The method of claim 11, wherein the DCI includes a first indication field for indicating one of:
the first TPMI domain is active;
the second TPMI domain is active;
both TPMI fields are active.
24. The method of claim 11, wherein the DCI includes a second indication field for indicating coefficients of the two first precoding matrices, the coefficients being used to calculate the second precoding matrix.
25. The method of claim 11, wherein the second precoding matrix is one of:
wherein W is 1 And W is 2 For the two first precoding matrices, W 1 And W is 2 Respectively associating different SRSs;and α is a coefficient.
26. The method of claim 11, wherein the method further comprises:
One of the two TPMI fields indicates an invalid code point or an invalid precoding matrix, and the other one indicates an effective precoding matrix W 1 In the case of (2), the terminal is based on W 1 Determining a third precoding matrix for PUSCH transmission, the third precoding matrix being one of:
27. the method of claim 11, wherein the method further comprises: the terminal determines the number of code words transmitted by the PUSCH of the K port according to the precoding indication;
wherein, when the transmission rank is greater than a first value, two codewords are enabled; and/or
When both TPMI fields are active, both codewords are enabled.
28. The method of claim 27, wherein a first codeword among the two codewords is mapped to P transport layers and a second codeword is mapped to Q transport layers;
wherein P is W 1 Rank number, Q is W 2 Rank number, W 1 And W is 2 For the two first precoding matrices and/or P and Q are predefined, P and Q being positive integers.
29. The method of claim 1, wherein a rank of the second precoding matrix is a sum of ranks of the first precoding matrix that are valid.
30. A PUSCH transmission method, comprising:
The network side equipment sends DCI, wherein the DCI is used for indicating two first precoding matrixes, the two first precoding matrixes are used for determining a second precoding matrix by the terminal, the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
31. The method of claim 30, wherein prior to the network side device transmitting DCI, the method further comprises: the network side equipment sends configuration information, wherein the configuration information comprises one or two SRS resource sets for codebook transmission;
the one SRS resource set includes one of: SRS for at least one K port; at least one M-port SRS and at least one N-port SRS; at least one K-port SRS and at least one L-port SRS;
one SRS resource set comprises at least one SRS of an M port, and the other SRS resource set comprises at least one SRS of an N port;
the SRS of the K port is used for PUSCH transmission of the K port; m+n=k, M, N and L are positive integers, L is smaller than K, and SRS of the M port and SRS of the N port are used for PUSCH transmission of the K port.
32. The method of claim 30, wherein the DCI includes at least one SRI field for indicating an SRS for the PUSCH transmission.
33. The method of claim 30, wherein the DCI comprises two TPMI fields indicating the two first precoding matrices.
34. A PUSCH transmission device, comprising:
a determining module, configured to determine a second precoding matrix according to the two first precoding matrices, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer;
and a sending module, configured to send PUSCH according to the second precoding matrix.
35. A PUSCH transmission device, comprising:
a sending module, configured to send DCI, where the DCI is used to indicate two first precoding matrices, where the two first precoding matrices are used for determining a second precoding matrix by a terminal, where the second precoding matrix is used for PUSCH transmission of K ports, and K is a positive integer.
36. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the method of any one of claims 1 to 29.
37. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of any one of claims 30 to 33.
38. A readable storage medium, characterized in that it stores thereon a program or instructions, which when executed by a processor, implement the steps of the method according to any of claims 1 to 33.
CN202210228037.4A 2022-03-08 2022-03-08 PUSCH transmission method, terminal and network side equipment Pending CN116781120A (en)

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