CN117158087A

CN117158087A - Method and device for receiving/sending information by PUSCH (physical uplink shared channel) based on non-codebook

Info

Publication number: CN117158087A
Application number: CN202280000698.XA
Authority: CN
Inventors: 高雪媛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2023-12-01
Also published as: WO2023184450A1

Abstract

The embodiment of the application discloses a method and a device for receiving/sending information by a PUSCH (physical uplink shared channel) based on a non-codebook, wherein the method comprises the following steps: the method comprises the steps of sending precoded SRS resources in a non-codebook SRS resource set to network equipment, receiving indication information sent by the network equipment, wherein the indication information is used for indicating TRI corresponding to a precoding matrix used for PUSCH transmission, determining the precoding matrix used for PUSCH transmission based on the TRI, determining a first resource combination corresponding to the TRI through a first mapping relation between a candidate data transmission layer and the candidate resource combination based on the TRI, and determining the precoding matrix actually used for PUSCH transmission based on the first resource combination. In the embodiment of the application, the mapping relation between the candidate data transmission layer and the candidate resource combination is constructed, and only the indication information of the indication TRI is required to be transmitted, so that the occupied bit number is less, and the expenditure of transmission signaling can be reduced. Further, based on the TRI, a precoding matrix satisfying PUSCH transmission requirements may be indicated.

Description

Method and device for receiving/sending information by PUSCH (physical uplink shared channel) based on non-codebook

Technical Field

The application relates to the technical field of communication, in particular to a method and a device for receiving/sending information by a PUSCH (physical uplink shared channel) based on a non-codebook.

Background

In order to adapt to the current service or scenario, the uplink transmission layer number of the terminal device may be increased to 8 layers, so as to support a higher uplink transmission rate compared with the downlink. When the uplink of the terminal device is enhanced to 8 layers, how to realize the transmission of the physical uplink shared channel (Physical Uplink Share Channel, PUSCH) of the non-codebook becomes a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for receiving/sending information on a PUSCH (physical uplink shared channel) based on a non-codebook, which can increase the number of uplink data transmission layers to 8 layers in terminal equipment so as to realize the PUSCH transmission based on the non-codebook.

In a first aspect, an embodiment of the present application provides a method for receiving information on PUSCH based on a non-codebook, which is applicable to a terminal device, and the method includes:

configuring and transmitting precoded SRS resources in a non-codebook SRS resource set to network equipment;

receiving indication information sent by the network equipment, wherein the indication information is used for indicating TRI (transmission request information) corresponding to a precoding matrix used for PUSCH (physical uplink shared channel) transmission;

determining a first resource combination corresponding to the TRI through a first mapping relation between a candidate data transmission layer and a candidate resource combination based on the TRI, wherein the first resource combination is determined from the SRS resource set based on the precoded SRS resource, and the first resource combination is a combination of one or more SRS resources or a port combination of one SRS resource;

And determining a precoding matrix used by the PUSCH transmission based on the first resource combination.

In the embodiment of the application, a transmitting network device configures a precoded SRS resource in a non-codebook SRS resource set as a function, receives indication information sent by a network device, wherein the indication information is used for indicating indication information TRI of a data transmission layer number used for PUSCH actual transmission, determines a target precoding matrix used for PUSCH transmission based on the TRI, determines a first resource combination corresponding to the TRI through a first mapping relation between a candidate data transmission layer and the candidate resource combination based on the TRI, and determines a precoding matrix used for PUSCH actual transmission based on the first resource combination. In the embodiment of the application, the mapping relation between the candidate data transmission layer and the candidate resource combination is constructed, and only the indication information of the indication TRI is required to be transmitted, so that the occupied bit number is less, and the expenditure of transmission signaling can be reduced. Further, based on TRI, the precoding matrix meeting the requirement of PUSCH transmission can be indicated, the safety, accuracy and reliability of PUSCH transmission are improved, the existing SRI mapping table is not required to be expanded, and the precoding matrix supporting 8-layer PUSCH transmission can be indicated through indication information under the scene of increasing the data transmission layer.

In a second aspect, an embodiment of the present application provides another method for transmitting information on PUSCH based on a non-codebook, which is applicable to a network device, and the method includes:

selecting a first resource combination from the SRS resource set based on the precoded SRS resources, wherein the first resource combination is a combination of one or more SRS resources or a port combination of one SRS resource;

generating indication information based on the number of SRS resources or ports of SRS resources in the first resource combination, wherein the indication information is used for indicating a precoding matrix used for PUSCH transmission and a corresponding TRI;

and sending the indication information to the terminal equipment.

In the embodiment of the application, a precoding SRS resource corresponding to a non-codebook SRS resource set sent by a terminal device is received, a first resource combination is selected from the SRS resource set based on the precoding SRS resource, and indication information is generated based on the number of SRS resources or ports in the first resource combination, wherein the indication information is used for indicating a precoding matrix and TRI used for PUSCH transmission. In the embodiment of the application, the mapping relation between the candidate data transmission layer and the candidate resource combination is constructed, and only the indication information of the indication TRI is required to be transmitted, so that the occupied bit number is less, and the expenditure of transmission signaling can be reduced. Further, based on TRI, the precoding matrix meeting the requirement of PUSCH transmission can be indicated, the safety, accuracy and reliability of PUSCH transmission are improved, the existing SRI mapping table is not required to be expanded, and the precoding matrix supporting 8-layer PUSCH transmission can be indicated through indication information under the scene of increasing the data transmission layer.

In a third aspect, an embodiment of the present application provides a communication device, where the communication device has a function of implementing part or all of the functions of the terminal device in the method described in the first aspect, for example, the function of the communication device may be provided with a function in part or all of the embodiments of the present application, or may be provided with a function of implementing any one of the embodiments of the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions in the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In a fourth aspect, an embodiment of the present application provides another communication apparatus having a function of implementing part or all of the network device in the method example described in the second aspect, for example, the function of the communication apparatus may be a function of some or all of the embodiments of the present application, or may be a function of implementing any one of the embodiments of the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions of the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device.

In one implementation, the communication device includes:

in a fifth aspect, an embodiment of the present application provides a communication device, which includes a processor, and when the processor invokes a computer program in a memory, performs the method described in the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication device, including a processor, which when calling a computer program in a memory, performs the method according to the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication apparatus including a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect described above.

In an eighth aspect, an embodiment of the present application provides a communication apparatus including a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the second aspect described above.

In a ninth aspect, an embodiment of the present application provides a communications device, the device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the device to perform the method of the first aspect.

In a tenth aspect, embodiments of the present application provide a communications device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the device to perform the method of the second aspect.

In an eleventh aspect, an embodiment of the present application provides a communication system, which includes the communication device of the third aspect and the communication device of the fourth aspect, or includes the communication device of the fifth aspect and the communication device of the sixth aspect, or includes the communication device of the seventh aspect and the communication device of the eighth aspect, or includes the communication device of the ninth aspect and the communication device of the tenth aspect.

In a twelfth aspect, an embodiment of the present application provides a computer readable storage medium storing instructions for use by the terminal device, where the instructions, when executed, cause the terminal device to perform the method of the first aspect.

In a thirteenth aspect, an embodiment of the present application provides a readable storage medium, configured to store instructions for use by a network device as described above, where the instructions, when executed, cause the network device to perform the method as described in the second aspect.

In a fourteenth aspect, the application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a fifteenth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

In a sixteenth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a terminal device to perform the functions referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above-mentioned method. In one possible design, the chip system further includes a memory for holding computer programs and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a seventeenth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a network device to implement the functionality referred to in the second aspect, e.g. to determine or process at least one of data and information referred to in the above-described method. In one possible design, the chip system further includes a memory to hold computer programs and data necessary for the network device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In an eighteenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a nineteenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

Drawings

In order to more clearly describe the embodiments of the present application or the technical solutions in the background art, the following description will describe the drawings that are required to be used in the embodiments of the present application or the background art.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flow chart of a method for receiving information on PUSCH based on a non-codebook according to an embodiment of the present application;

fig. 3 is a flowchart of a method for receiving information on PUSCH based on a non-codebook according to an embodiment of the present application;

fig. 4 is a flowchart of a method for transmitting information on PUSCH based on a non-codebook according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. Depending on the context, the word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination"

For purposes of brevity and ease of understanding, the terms "greater than" or "less than," "above," or "below" are used herein in describing the magnitude relationship. But it will be appreciated by those skilled in the art that: the term "greater than" also encompasses the meaning of "greater than or equal to," less than "also encompasses the meaning of" less than or equal to "; the term "above" encompasses the meaning of "above and equal to" and "below" also encompasses the meaning of "below and equal to".

For ease of understanding, the terms involved in the present application are first introduced.

The uplink sounding signal SRS (Sounding Reference Signal) is used for estimating the frequency domain information of an uplink channel, performing frequency selective scheduling, and also estimating the uplink channel and performing downlink beam shaping.

The sounding reference signal SRS (Sounding Reference Signal) is used for estimating the frequency domain information of the uplink channel, performing frequency selective scheduling, and also estimating the uplink channel and performing downlink beam shaping.

An SRS resource indication (SRS Resource Indicator, SRI) for indicating which SRS resource the UE uses for uplink data transmission.

And the data transmission rank indication (Transmission Rank Indicator, TRI) is used for indicating the number of data transmission layers corresponding to the precoding matrix used for the actual transmission of the PUSCH.

In order to better understand a method for receiving/transmitting information on PUSCH without codebook disclosed in the embodiment of the present application, a communication system to which the embodiment of the present application is applicable is first described below.

Referring to fig. 1, fig. 1 is a schematic diagram of a communication system according to an embodiment of the application. The communication system may include, but is not limited to, a network device and a terminal device, and the number and form of devices shown in fig. 1 are only for example and not limiting to the embodiment of the present application, and may include two or more network devices and two or more terminal devices in practical applications. The communication system shown in fig. 1 is exemplified as including a network device 101 and a terminal device 102.

It should be noted that the technical solution of the embodiment of the present application may be applied to various communication systems. For example: a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation,5G) mobile communication system, a 5G New Radio (NR) system, or other future new mobile communication systems, etc. It should also be noted that the side link in the embodiment of the present application may also be referred to as a side link or a through link.

The network device 101 in the embodiment of the present application is an entity for transmitting or receiving signals on the network side. For example, the network device 101 may be an evolved NodeB (eNB), a transmission point (transmission reception point, TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (wireless fidelity, wiFi) system, etc. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the network equipment. The network device provided by the embodiment of the application can be composed of a Central Unit (CU) and a Distributed Unit (DU), wherein the CU can also be called a control unit (control unit), the protocol layers of the network device such as a base station can be separated by adopting the structure of the CU-DU, the functions of part of the protocol layers are placed in the CU for centralized control, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU centrally controls the DU.

The terminal device 102 in the embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be an automobile with a communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment.

In side link communication, there are 4 side link transmission modes. The side link transmission mode 1 and the side link transmission mode 2 are used for device-to-device (D2D) communication. Side link transmission mode 3 and side link transmission mode 4 are used for V2X communication. When the side link transmission mode 3 is employed, resource allocation is scheduled by the network device 101. Specifically, the network device 101 may transmit the resource allocation information to the terminal device 102, and then the terminal device 102 allocates resources to another terminal device, so that the other terminal device may transmit information to the network device 101 through the allocated resources. In V2X communication, a terminal device with a better signal or higher reliability may be used as the terminal device 102. The first terminal device mentioned in the embodiment of the present application may refer to the terminal device 102, and the second terminal device may refer to the other terminal device.

It may be understood that, the communication system described in the embodiment of the present application is for more clearly describing the technical solution of the embodiment of the present application, and is not limited to the technical solution provided in the embodiment of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of the new service scenario, the technical solution provided in the embodiment of the present application is equally applicable to similar technical problems.

The method for receiving/transmitting information on PUSCH based on non-codebook and the device thereof provided by the application are described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a method for receiving information on PUSCH based on a non-codebook according to an embodiment of the present application. The method for receiving information by the PUSCH based on the non-codebook is executed by the terminal equipment. As shown in fig. 2, the method may include, but is not limited to, the steps of:

step S21, the precoded SRS resources in the SRS resource set of the non-codebook are sent to the network equipment.

In the embodiment of the application, the maximum PUSCH transmission supported by the terminal equipment can be increased to 8 layers, and further can be used for supporting higher uplink transmission rate compared with downlink.

In the embodiment of the present application, the sounding reference signal (Sounding Reference Signal, SRS) resource set includes at least one SRS resource. The SRS resource may be a single-port SRS resource or a multi-port SRS resource. The number of ports of the multiport SRS resource configuration is 8 at maximum. And when the SRS resources are single-port, 8 SRS resources are configured in the SRS resource set at maximum.

Optionally, the resource configuration type of the SRS resource set is:

A first type: the SRS resource set comprises a plurality of first candidate SRS resources, wherein the first candidate SRS resources are single-port SRS resources.

The second type: the SRS resource set includes at least one second candidate SRS resource, different second candidate SRS resources having different numbers of ports. For example, the number of ports is 1,2,3,4, 8, and 8 for the second SRS resource 1,2,3, and 4.

Third type: the SRS resource set includes a third candidate SRS resource configured with a plurality of candidate ports. The number of ports may be 1,2,3,4,5,6,7,8.

Optionally, the network device configures the terminal device with a set of SRS resources with a function that is not codebook through higher layer signaling. For example, the network device may configure the SRS resource set to the terminal device through radio resource Control (Radio Resource Control, RRC) signaling or media access Control-Element (MAC-CE) signaling or other higher layer signaling. Optionally, the configuration or reconfiguration of the SRS resource set is implemented through RRC signaling, and the update configuration of all or part of SRS resources of a certain SRS resource set is implemented through MAC-CE signaling.

Alternatively, the time domain characteristic of the SRS resource set is periodic, semi-persistent or aperiodic, that is, the SRS resource set may be one periodic SRS resource set, one semi-persistent SRS resource set, or one aperiodic SRS resource set.

In the embodiment of the application, after the terminal equipment acquires the SRS resource set configured by the network equipment, the terminal equipment can perform precoding on the SRS resources configured in the SRS resource set based on the initial precoding matrix, and send the SRS resources adopting precoding to the network equipment. The precoded SRS resources may be used to obtain channel state information (Channel State Information, CSI) and thus channel estimation information that may reflect scheduling information such as channel conditions, interference conditions of the prescheduled users, and/or channel noise.

It should be noted that the non-codebook uplink transmission scheme is also a spatial multiplexing technique, and is different from the codebook-based uplink transmission in that its precoding is obtained based on a certain criterion, instead of determining the precoding among limited candidate values based on a fixed codebook. If the reciprocity of the uplink and downlink channels exists, the terminal can calculate the information of the downlink channels based on the channel reciprocity, so as to obtain an uplink precoding matrix. If the channel reciprocity is good enough, the terminal can obtain more accurate precoding through the downlink channel, and compared with a codebook-based transmission scheme, the overhead of precoding indication can be saved, and better performance can be obtained.

Optionally, the terminal device receives an associated downlink channel state information Reference Signal (CSI-RS) resource configured by the network device, and the terminal device may determine an initial precoding matrix based on the downlink CSI-RS resource.

Step S22, receiving indication information sent by the network equipment, wherein the indication information is used for indicating TRI corresponding to a precoding matrix used for PUSCH transmission.

Optionally, the network device may receive the precoded SRS resource to perform channel estimation, and obtain channel estimation information, where the channel estimation information may reflect a channel condition, an interference condition of the prescheduled multiuser, and/or channel noise, so that the TRI of the terminal device may be determined based on the channel estimation information. That is, the network device may comprehensively consider scheduling factors such as estimated uplink channel information and interference conditions of pre-scheduled users, determine a first resource combination used for PUSCH actual transmission from an SRS resource set configured for the terminal device, determine a target precoding matrix based on the first resource combination, and determine a number of data transmission layers corresponding to the target precoding matrix based on the number of resources in the first resource combination, that is, the network device selects the first resource combination from the SRS resource set based on the precoded SRS resource, and determines a precoding matrix used for PUSCH transmission, and a TRI corresponding to the precoding matrix.

Alternatively, the TRI is indicated by the SRI with indication information (Sounding Reference Signal ResourceIndicator, SRI) of the SRS resource as indication information. Alternatively, the indication information may be TRI directly.

Step S23, based on TRI, a first resource combination corresponding to TRI is determined through a first mapping relationship between the candidate data transmission layer and the candidate resource combination, where the first resource combination is determined from the SRS resource set based on the precoded SRS resource, and the first resource combination includes an SRS resource combination of one or more SRS resources or the first resource combination is a port combination of one SRS resource.

In the embodiment of the present application, a first mapping relationship between the candidate data transmission layer and the candidate resource combination is predefined or indicated, for example, a mapping table may be predefined, where the mapping table includes the first mapping relationship between the candidate data transmission layer number and the candidate resource combination. For another example, the candidate data transport layer and candidate resource combination may be: tri=1 corresponds to SRS resource #0, tri=2 corresponds to SRS resources #0 and #1.

The first resource combination is a combination of one or more SRS resources selected from the SRS resource set based on the precoded SRS, or a port combination of the same SRS resource.

The first resource allocation type corresponding to the SRS resource set, namely the SRS resource set comprises first candidate SRS resources, and the first resource combination comprises one or more first candidate SRS resources selected by the network equipment. In this case, the first mapping relationship includes a correspondence relationship between the candidate TRI and the first candidate SRS resources, and different candidates TRI correspond to different candidate resource combinations formed by combining one or more first candidate SRS resources, where the value of the candidate TRI sequentially increases, and then the number and the number of the first candidate SRS resources included in the candidate resource combination also sequentially increases.

Illustratively, when the TRI indicated by the indication information (SRI) is 1, the number #0 of the first candidate SRS resource corresponds, when the TRI indicated by the indication information (SRI) is 2, the numbers #0 and #1 of the first candidate SRS resource correspond, when the TRI indicated by the indication information (SRI) is 3, the numbers #0, #1 and #2 of the first candidate SRS resource correspond, and so on.

And the network equipment selects one second candidate SRS resource from the SRS resource set based on the pre-coding SRS, and the first resource combination is a port combination of all ports configured by the selected second candidate SRS resource. Optionally, the first mapping relationship includes a correspondence relationship between the candidate TRI and the second candidate SRS resource, which may be determined by a table or a predefined manner, where the value of the candidate TRI corresponds to the number of the second candidate SRS resource one by one, and when the value of the candidate TRI increases sequentially, the number of the second candidate SRS resource and the number of ports included also increase sequentially.

Illustratively, when the TRI indicated by the indication information (SRI) is 1, the number #0 of the second candidate SRS resource corresponds, when the TRI indicated by the indication information (SRI) is 2, the number #1 of the second candidate SRS resource corresponds, when the indication information (SRI) is 3, the number #2 of the first candidate SRS resource corresponds, and so on.

Alternatively, the correspondence between the candidate SRI and the second candidate SRS resource may be configured, and may be determined by a table or a predefined manner, where the values of the candidate SRI and the numbers of the second candidate SRS resource are in one-to-one correspondence, and when the values of the candidate SRIs sequentially increased, the numbers of the second candidate SRS resource and the number of ports included are sequentially increased.

Illustratively, the number #0 of the second candidate SRS resource corresponds to when the SRI indicated by the indication information (SRI) is 0, the number #1 of the second candidate SRS resource corresponds to when the SRI indicated by the indication information (SRI) is 1, the number #2 of the first candidate SRS resource corresponds to when the SRI indicated by the indication information (SRI) is 2, and so on.

And selecting one or more candidate ports from the candidate ports of the third candidate SRS resource based on the pre-coded SRS by the network equipment, wherein the first resource combination is a port combination formed by the selected one or more candidate ports. In this case, the first mapping relationship includes a correspondence relationship between the candidate TRI and the candidate ports, and different candidates TRI correspond to different candidate port combinations synthesized by one or more candidate ports, where the value of the candidate TRI sequentially increases, and then the number of candidate ports and the port number included in the candidate port combination also sequentially increases.

Illustratively, when the TRI indicated by the indication information (SRI) is 1, corresponding to the port number #0 in the third candidate SRS resource, when the TRI indicated by the indication information (SRI) is 2, corresponding to the port numbers #0 and #1 in the third candidate SRS resource, when the TRI indicated by the indication information (SRI) is 3, corresponding to the port numbers #0, #1 and #2 in the third candidate SRS resource, and so on.

Step S24, determining a precoding matrix used for PUSCH transmission based on the first resource combination.

Optionally, after the terminal device acquires the first resource combination, the precoding vector or the precoding matrix used by the first resource combination may be determined to be the precoding matrix used for PUSCH transmission.

In one case, a resource configuration of a set of SRS resources is determined as a first type, wherein a first combination of resources includes one or more first SRS resources that are first candidate SRS resources within the set of SRS resources selected by the network device. The terminal equipment determines a precoding vector used by the first SRS resource correspondingly, and determines a precoding matrix used by the PUSCH transmission based on the precoding vector used by the first SRS resource. Wherein the precoding vector is one vector of the initial precoding matrix.

Optionally, the precoding vectors used by the first candidate SRS resources in the combination are combined according to the numbering sequence of the first candidate SRS resources, so as to obtain a precoding matrix used by PUSCH transmission.

The initial precoding matrix is illustrated as h= [ V ₀ ,V ₁ ,V ₂ ,V ₃ ,V ₄ ,V ₅ ,V ₆ ,V ₇ ]The numbers of the first candidate SRS resources are #0 to #7, where each first candidate SRS resource port corresponds to one precoding column vector, for example, the first candidate SRS resource #0 corresponds to V ₀ The first candidate SRS resource #1 corresponds to V ₁ The first candidate SRS resource #2 corresponds to V ₂ The first candidate SRS resource #3 corresponds to V ₃ And so on, the first candidate SRS resource #7 corresponds to V ₇ . When the first resource combination determined by the terminal equipment is the first candidate SRS resource #0 and the first candidate SRS resource #1, the corresponding V is determined ₁ And V ₂ And combining to obtain a precoding matrix used for PUSCH transmission.

In another case, it is determined that the resource configuration of the SRS resource set is of a first type, wherein the first combination of resources includes one second SRS resource, the second SRS resource being a second candidate SRS resource in the SRS resource set selected by the network device. Further, the terminal equipment determines a precoding matrix used by the port combination corresponding to the second SRS resource, and determines the precoding matrix corresponding to the second SRS resource as a precoding matrix used by PUSCH transmission.

It should be noted that, the terminal device performs precoding on each second candidate SRS resource in the SRS resource set by using a different precoding matrix, so as to obtain a precoded second candidate SRS resource. The precoding matrix corresponding to the second candidate SRS resource may be determined based on the port combination corresponding to the second candidate SRS resource. The precoding matrix corresponding to the second candidate SRS resource is formed by combining one or more precoding vectors of the initial precoding matrix.

The initial precoding matrix is illustrated as h= [ V ₀ ,V ₁ ,V ₂ ,V ₃ ,V ₄ ,V ₅ ,V ₆ ,V ₇ ]Second candidate SRS resourcesThe numbers #0 to #7, wherein the second candidate SRS resource #0 is configured with one port #0, the second candidate SRS resource #1 is configured with two ports #0 and #1, and the second candidate SRS resource #2 corresponds to three ports #0, #1 and #2; a second candidate SRS resource #3 configured with four ports #0, #1, and, #2, and port #3; and so on, the second candidate SRS resource #7 corresponds to four ports #0 to #7. A precoding matrix corresponding to a different second candidate SRS resource, for example, a second candidate SRS resource #1, is configured with two ports #0 and #1, and the corresponding precoding matrix is [ V ₀ ,V ₁ ]The method comprises the steps of carrying out a first treatment on the surface of the For example, the second candidate SRS resource #3 is configured with two ports #0, #1, and, #2, and port #3, and the corresponding precoding matrix is [ V ₀ ,V ₁ ,V ₂ ,V ₃ ]。

When the terminal equipment determines that the first resource combination is the second SRS resource #1, and the included port combination is ports #0 and #1, the second candidate SRS resource #1 corresponds to a precoding matrix of [ V ] ₀ ,V ₁ ]A precoding matrix to use for PUSCH transmission is determined.

In yet another case, a resource configuration of the SRS resource set is determined to be a first type, wherein the first combination of resources includes one or more first ports, the first ports being ports of the plurality of candidate ports selected by the network device. Further, a precoding vector of the first port is obtained, and a precoding matrix used for PUSCH transmission is determined based on the precoding vector corresponding to the first port. Optionally, the precoding vectors used by the first port in the combination are combined according to the serial number sequence of the first port, so as to obtain a precoding matrix used by PUSCH transmission.

It should be noted that, each port in the third candidate SRS resource has a corresponding precoding vector, where the precoding vector is a vector of the initial precoding matrix.

The initial precoding matrix is illustrated as h= [ V ₀ ,V ₁ ,V ₂ ,V ₃ ,V ₄ ,V ₅ ,V ₆ ,V ₇ ]Candidate ports of the third candidate SRS resource are respectivelyCorresponding to one precoding column vector, e.g., candidate port #0 corresponds to V ₀ Candidate port #1 corresponds to V ₁ Candidate port #2 corresponds to V ₂ Candidate port #3 corresponds to V ₃ And so on, candidate port #7 corresponds to V ₇ . When the first resource combination determined by the terminal equipment is the candidate port #0 and the candidate port #1, the corresponding V is determined ₀ And V ₁ And combining to obtain a precoding matrix used for PUSCH transmission.

When it needs to be described, the maximum number of transmission layers RANK of the higher layer configuration needs to be applied to the SRS resource selected in the first resource combination as the codebook subset restriction, that is, the number of data transmission layers corresponding to the target precoding matrix determined by the terminal device is smaller than or equal to the maximum number of data transmission layers supported by the terminal device.

In the embodiment of the application, a transmitting network device configures a precoded SRS resource in a non-codebook SRS resource set as a function, receives indication information sent by a network device, wherein the indication information is used for indicating indication information TRI of a data transmission layer number used for PUSCH actual transmission, determines a target precoding matrix used for PUSCH transmission based on the TRI, determines a first resource combination corresponding to the TRI through a first mapping relation between a candidate data transmission layer and the candidate resource combination based on the TRI, and determines a precoding matrix used for PUSCH actual transmission based on the first resource combination. In the embodiment of the application, the mapping relation between the candidate data transmission layer and the candidate resource combination is constructed, and only the indication information of the indication TRI is required to be transmitted, so that the occupied bit number is less, and the expenditure of transmission signaling can be reduced. Further, the target precoding matrix meeting the PUSCH transmission requirement can be indicated based on the TRI, the safety, accuracy and reliability of PUSCH transmission are improved, the existing SRI mapping table is not required to be expanded, and the precoding matrix supporting PUSCH transmission of 8 layers can be indicated through the indication information under the scene of increasing the data transmission layers.

Referring to fig. 3, fig. 3 is a flowchart illustrating a method for receiving information on PUSCH based on a non-codebook according to an embodiment of the present application. The method for receiving information by the PUSCH based on the non-codebook is executed by the terminal equipment. As shown in fig. 3, the method may include, but is not limited to, the steps of:

step S31, the transmitting network device configures the precoded SRS resources in the non-codebook SRS resource set.

Any implementation manner of the step S31 may be adopted in any embodiment of the present application, and specific description may be given to the description of the related content, which is not repeated here.

In step S32, receiving indication information sent by the network device, where the indication information is used to indicate indication information TRI of the number of data transmission layers actually used for PUSCH transmission.

Optionally, the TRI is indicated to the terminal device by means of indication information (Sounding Reference Signal ResourceIndicator, SRI) of SRS resources, optionally, the TRI is sent to the terminal device by means of an indication field of the SRI, that is to say an indication field of the existing SRI is multiplexed, by means of which the TRI is indicated to the terminal device, which indication field may carry an index value of the indexable TRI.

In step S33, in the case where the SRI is used to indicate TRI, the TRI is determined based on the SRI and the second mapping relationship between the candidate SRI and the candidate TRI.

In the embodiment of the present application, a second mapping relationship exists between the candidate SRI and the candidate TRI, and the TRI may be determined based on the second mapping relationship, as shown in table 1. Referring to table 1, for example, the second mapping relationship may be: SRI takes a value of 1, corresponding tri=1, SRI takes a value of 5, corresponding tri=6.

TABLE 1

It will be appreciated that each element in table 1 is independent, and that these elements are illustratively listed in the same table, but do not represent that all elements in the table must exist simultaneously in accordance with what is shown in the table. Wherein the value of each element is independent of any other element value in table 1. It will be appreciated by those skilled in the art that the values of each of the elements in Table 1 are a separate embodiment.

Optionally, the second mapping relationship may be determined in advance according to a protocol convention and stored in the terminal device, or may be indicated to the terminal device by higher layer signaling.

Step S34, determining a first resource combination corresponding to the TRI based on the first mapping relation.

The first resource combination is selected from the SRS resource set based on the pre-coding SRS, and is a combination of one or more SRS resources or a port combination of one SRS resource.

Optionally, the first mapping relationship includes a correspondence between the candidate TRI and the first candidate SRS resources, and different candidates TRI correspond to different candidate resource combinations formed by combining one or more first candidate SRS resources, where the value sequence of the candidate TRI is increased, and then the number and the number of the first candidate SRS resources included in the candidate resource combination are also increased sequentially.

Optionally, the first mapping relationship includes a correspondence between the candidate TRI and the second candidate SRS resource, where the value of the candidate TRI corresponds to the number of the second candidate SRS resource one by one, and if the value of the candidate TRI increases sequentially, the number of the second candidate SRS resource and the number of the ports included also increase sequentially.

Optionally, the first mapping relationship includes a correspondence between a candidate TRI and a candidate port, where different candidates TRI correspond to different candidate port combinations synthesized by one or more candidate ports, and the number of candidate ports and the port number included in the candidate port combination are sequentially increased if the value of the candidate TRI is sequentially increased.

The first resource combination is a combination of one or more SRS resources selected from the SRS resource set based on the precoded SRS, or a port combination of the same SRS resource. For example, the set of SRS resources includes first candidate SRS resources, and the first combination of resources includes one or more first candidate SRS resources selected by the network device. For another example, the SRS resource set includes second candidate SRS resources, the network device selects one second candidate SRS resource from the SRS resource set based on the precoded SRS, and the first resource combination is a port combination of ports configured for the selected second candidate SRS resource. For another example, the SRS resource set includes a third candidate SRS resource, the network device selects one or more candidate ports from the candidate ports of the third candidate SRS resource based on the precoded SRS, and the first resource combination is a port combination formed by the selected one or more candidate ports.

The exemplary description may be referred to the related examples in the above embodiments, and will not be repeated here.

Step S35, determining a precoding matrix used for PUSCH transmission based on the first resource combination.

In one case, a set of SRS resources is determined to be a resource allocation type one, wherein a first combination of resources includes one or more first SRS resources that are first candidate SRS resources within the set of SRS resources selected by the network device. The terminal equipment determines a precoding vector used by the first SRS resource correspondingly, and determines a precoding matrix used by the PUSCH transmission based on the precoding vector used by the first SRS resource. Wherein the precoding vector is one vector of the initial precoding matrix.

In another case, the SRS resource set is determined to be of a second resource allocation type, where the first resource combination includes a second SRS resource, and the second SRS resource is a second candidate SRS resource selected by the network device in the SRS resource set. Further, the terminal equipment determines a precoding matrix used by the port combination corresponding to the second SRS resource, and determines the precoding matrix corresponding to the second SRS resource as a precoding matrix used by PUSCH transmission.

In yet another case, a determination is made that the resource configuration of the SRS resource set is of a third type, wherein the first combination of resources includes one or more first ports, the first ports being ports of the plurality of candidate ports selected by the network device. Further, a precoding vector of the first port is obtained, and a precoding matrix used for PUSCH transmission is determined based on the precoding vector corresponding to the first port. Optionally, the precoding vectors used by the first port in the combination are combined according to the serial number sequence of the first port, so as to obtain a precoding matrix used by PUSCH transmission.

In the embodiment of the application, the mapping relation between the candidate data transmission layer and the candidate resource combination is constructed, and only the indication information of the indication TRI is required to be transmitted, so that the occupied bit number is less, and the expenditure of transmission signaling can be reduced. Further, based on TRI, the precoding matrix meeting the requirement of PUSCH transmission can be indicated, the safety, accuracy and reliability of PUSCH transmission are improved, the existing SRI mapping table is not required to be expanded, and the precoding matrix supporting 8-layer PUSCH transmission can be indicated through indication information under the scene of increasing the data transmission layer.

Referring to fig. 4, fig. 4 is a flowchart of a PUSCH information transmission method based on a non-codebook according to an embodiment of the present application. The method for transmitting information by the PUSCH based on the non-codebook is executed by the network equipment. As shown in fig. 4, the method may include, but is not limited to, the steps of:

step S41, receiving the precoded SRS resources in the SRS resource set of the non-codebook sent by the terminal equipment.

The SRS resource set includes at least one SRS resource. The SRS resource may be a single-port SRS resource or a multi-port SRS resource. The number of ports of the multiport SRS resource configuration is 8 at maximum. And when the SRS resources are single-port, 8 SRS resources are configured in the SRS resource set at maximum.

Optionally, the resource configuration type of the SRS resource set:

a first type: the SRS resource set comprises a plurality of first candidate SRS resources, wherein the first candidate SRS resources are single-port SRS resources, and each port corresponds to one data transmission layer. Or,

a first type: the SRS resource set includes at least one second candidate SRS resource, different second candidate SRS resources having different numbers of ports. For example, the number of ports is 1, 2, 3, 4, 8, and 8 for the second SRS resource 1, 2, 3, and 4. Wherein each port corresponds to a data transmission layer. Or,

Third type: the SRS resource set includes a third candidate SRS resource having a plurality of candidate ports. The number of ports may include 1,2,3,4,5,6,7,8, where each port corresponds to a data transport layer.

Optionally, the network device configures the terminal device with a set of SRS resources with a function that is not codebook through higher layer signaling. For example, the network device may configure the SRS resource set to the terminal device through RRC signaling or MAC-CE signaling.

Alternatively, the SRS resource set may be a periodic SRS resource set, or a semi-persistent SRS resource set, or an aperiodic SRS resource set.

In the embodiment of the application, after the terminal equipment acquires the SRS resource set configured by the network equipment, the terminal equipment can perform precoding on the SRS resources configured in the SRS resource set based on the initial precoding matrix, and send the SRS resources adopting precoding to the network equipment. The precoded SRS resources may be used to obtain CSI, and thus may obtain channel estimation information, which may reflect scheduling factors such as channel conditions, interference conditions of pre-scheduled multiple users, and/or channel noise.

In the embodiment of the present application, the determining process of the initial precoding matrix may refer to the description of the related content in the above embodiment, and will not be repeated here.

Step S42, a first combination of resources is determined from the SRS resource set based on the precoded SRS resources.

The first resource combination is an SRS resource combination comprising one or more SRS resources or a port combination of the same SRS resource.

Optionally, the network device may receive the precoded SRS resource to perform channel estimation, and obtain channel estimation information, where the channel estimation information may reflect a channel condition, an interference condition of multiple users, and/or channel noise, so that the TRI of the terminal device may be determined based on the channel estimation information. That is, the network device may comprehensively consider scheduling factors such as estimated uplink channel information and interference conditions of the prescheduled user, and determine the first resource combination used for PUSCH transmission from the SRS resource set configured for the terminal device. Further, the network device may determine the target precoding matrix based on the first resource combination, and determine the number of data transmission layers corresponding to the target precoding matrix based on the number of resources in the first resource combination, that is, the network device selects the first resource combination from the SRS resource set based on the precoded SRS resource, and determines the precoding matrix used for PUSCH transmission, and the indication information TRI of the number of data transmission layers actually used for PUSCH transmission.

In step S43, based on the SRS resource or the number of ports of the SRS resource in the first resource combination, indication information is generated, where the indication information is used to indicate PUSCH transmission to use the precoding matrix and the corresponding TRI.

In one case, determining that the SRS resource set is of a first resource allocation type, and the first resource combination includes one or more first SRS resources, where the first SRS resources are first candidate SRS resources selected by the network device in the SRS resource set. Further, the network device may determine a number of first SRS resources, and determine the indication information based on the number. In this case, one first candidate SRS resource corresponds to one data transmission layer, and the network device determines the number of the first SRS resources, so that the data transmission layer actually used for PUSCH transmission can be determined, that is, the indication information for indicating the data transmission layer can be determined.

In another case, if the SRS resource set is determined to be of the second resource allocation type, the first resource combination includes a second SRS resource, where the second SRS resource is a second candidate SRS resource selected by the network device in the SRS resource set. The network device generates indication information based on the number of ports for which the second SRS resource is configured. In this case, the network device determines the number of the second SRS resources, and may determine the data transmission layer actually used for PUSCH transmission, that is, may determine the indication information for indicating the data transmission layer. For example, the second SRS resource is a second candidate SRS resource #2 in the SRS resource set, where the second candidate SRS resource #2 includes ports #0, #1 and #2, and based on the number of ports of the second SRS resource, it may be determined that the data transmission layer actually used for PUSCH transmission is 3.

In yet another case, the SRS resource set is determined to be a resource allocation type three, and the first resource combination includes one or more first ports, where the first ports are ports selected by the network device from a plurality of candidate ports. Further, the network device generates the indication information based on the number of the first ports. For example, the third candidate SRS resource includes candidate ports #0 to #7, and the network device may determine that the candidate port #0 and the candidate port #1 are the first ports, and may determine that the data transmission layer used for PUSCH actual transmission is 2 based on the number of the first ports.

Alternatively, the method may use 3 bits to encode, determine the indication information, and send the indication information to the terminal device. For example, the data transmission layer 2 used for PUSCH actual transmission is determined, and encoded as 101 as the indication information. And determining that the data transmission layer used for the actual transmission of the PUSCH is 5, and encoding the data transmission layer into 101 as indication information.

Step S44, sending indication information to the terminal equipment.

Alternatively, the TRI is indicated by the SRI as the indication information. Alternatively, the indication information may be TRI directly. Optionally, the TRI is sent to the terminal device via an indication field of the SRI, that is to say an indication field of the existing SRI is multiplexed, via which the TRI is indicated to the terminal device, which indication field may carry an index value that can index the TRI. Alternatively, the network device may send the indication information to the terminal device through DCI signaling.

In the embodiment of the application, a precoding SRS resource corresponding to a non-codebook SRS resource set sent by a terminal device is received, a first resource combination is selected from the SRS resource set based on the precoding SRS resource, and indication information is generated based on the number of SRS resources or ports in the first resource combination, wherein the indication information is used for determining a precoding matrix used for PUSCH transmission and a corresponding TRI. In the embodiment of the application, the mapping relation between the candidate data transmission layer and the candidate resource combination is constructed, and only the indication information of the indication TRI is required to be transmitted, so that the occupied bit number is less, and the expenditure of transmission signaling can be reduced. Further, based on TRI, the precoding matrix meeting the requirement of PUSCH transmission can be indicated, the safety, accuracy and reliability of PUSCH transmission are improved, the existing SRI mapping table is not required to be expanded, and the precoding matrix supporting 8-layer PUSCH transmission can be indicated through indication information under the scene of increasing the data transmission layer.

In the embodiment provided by the application, the method provided by the embodiment of the application is introduced from the angles of the network equipment and the terminal equipment respectively. In order to implement the functions in the method provided by the embodiment of the present application, the network device and the terminal device may include hardware structures, software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

Fig. 5 is a schematic structural diagram of a communication device 50 according to an embodiment of the application. The communication device 70 shown in fig. 7 may include a transceiver module 501 and a processing module 502. The transceiver module 501 may include a transmitting module for implementing a transmitting function and/or a receiving module for implementing a receiving function, and the transceiver module 501 may implement a transmitting function and/or a receiving function.

The communication device 50 may be a terminal device (such as a network device in the foregoing method embodiment), or may be a device in a network device, or may be a device that can be used in a matching manner with a network device. Alternatively, the communication device 50 may be a terminal device, a device in a terminal device, or a device that can be used in cooperation with a terminal device.

The communication apparatus 50 is a terminal device:

a transceiver module 502, configured to send precoded SRS resources in a non-codebook SRS resource set to a network device, and receive indication information sent by the network device, where the indication information is used to determine TRI corresponding to a precoding matrix used for PUSCH transmission;

a processing module 501, configured to determine, based on the TRI, a first resource combination corresponding to the TRI through a first mapping relationship between a candidate data transmission layer and a candidate resource combination, and determine, based on the first resource combination, a precoding matrix used for PUSCH transmission; the first resource combination is determined from the SRS resource set based on the precoded SRS resource, the first resource combination is a combination of one or more SRS resources, or the first resource combination is a port combination of one SRS resource, and the precoding matrix used for PUSCH transmission is determined based on the first resource combination.

Optionally, the transceiver module 502 is further configured to receive a sounding reference signal resource indicator SRI, where the SRI is configured to indicate the TRI; alternatively, the TRI is received.

Optionally, the processing module 501 is further configured to:

Determining the TRI based on the SRI and a second mapping relation between the candidate SRI and the candidate TRI when the SRI instruction is used for the TRI;

and determining a first resource combination corresponding to the TRI based on the first mapping relation.

Optionally, the resource configuration type of the SRS resource set is:

a first type: the SRS resource set comprises a plurality of first candidate SRS resources, and the first candidate SRS resources are single-port SRS resources; or alternatively

The second type: the SRS resource set comprises at least one second candidate SRS resource, and different second candidate SRS resources have different numbers of ports; or alternatively

Third type: the SRS resource set includes a third candidate SRS resource configured with a plurality of candidate ports.

Optionally, the processing module 501 is further configured to: determining that the resources of the SRS resource set are configured to be of the first type, wherein the first resource combination comprises one or more first SRS resources, and the first SRS resources are first candidate SRS resources measured by the network equipment in the SRS resource set;

determining a precoding vector used correspondingly by the first SRS resource;

And determining a target precoding matrix used for the PUSCH transmission based on the precoding vector correspondingly used by the first SRS resource.

Optionally, the first mapping relationship includes a correspondence between a candidate TRI and first candidate SRS resources, different candidates TRI correspond to different candidate resource combinations formed by combining one or more first candidate SRS resources, where the value sequence of the candidate TRI is increased, and then the number and the number of the first candidate SRS resources included in the candidate resource combination are also increased sequentially.

Optionally, the processing module 501 is further configured to:

determining that the resources of the SRS resource set are configured to be of the first type, wherein the first resource combination comprises a second SRS resource, and the second SRS resource is a second candidate SRS resource measured by the network equipment;

determining a precoding matrix used by a port combination corresponding to the second SRS resource;

and determining the precoding matrix used by the second SRS resource as a target precoding matrix used by the PUSCH transmission.

Optionally, the first mapping relationship includes a correspondence between a candidate TRI and a second candidate SRS resource, where the value of the candidate TRI corresponds to the number of the second candidate SRS resource one by one, and the number of the second candidate SRS resource and the number of the included ports are sequentially increased if the value of the candidate TRI is sequentially increased.

Optionally, the processing module 501 is further configured to:

determining that resources of the SRS resource set are configured to be of the first type, wherein the first resource combination includes one or more first ports, and the first ports are ports measured by the network device in the plurality of candidate ports;

and acquiring a precoding vector of the first port, and determining a precoding matrix used for PUSCH transmission based on the precoding vector corresponding to the first port.

Optionally, the first mapping relationship includes a correspondence between a candidate TRI and a candidate port, different candidate TRI corresponds to different candidate port combinations synthesized by one or more candidate ports, where the value of the candidate TRI sequentially increases, and then the number of candidate ports and the port number included in the candidate port combination also sequentially increases.

Optionally, the SRS resource set is one of the following types:

a periodic SRS resource set; or alternatively

A semi-persistent SRS resource set; or alternatively

And (3) an aperiodic SRS resource set.

Optionally, the number of data transmission layers corresponding to the target precoding matrix is smaller than or equal to the maximum number of data transmission layers supported by the terminal device

The communication apparatus 50 is a network device:

A transceiver module 502, configured to receive a precoded SRS resource collected from SRS resources of a non-codebook sent by a terminal device, and send indication information to the terminal device, where the indication information is used to indicate a target precoding matrix used for PUSCH actual transmission and a corresponding TRI;

a processing module 501, configured to determine a first resource combination from the SRS resource set based on the precoded SRS resources, and generate the indication information based on the number of SRS resources or ports in the first resource combination; the first resource combination is a source combination of one or more SRS resources, or the first resource combination is a port combination of one SRS resource.

Optionally, the transceiver module 502 is further configured to:

determining the indication information as SRI, and sending the SRI to the terminal equipment, wherein the SRI is used for indicating TRI; or,

and determining the indication information as the TRI and sending the TRI to the terminal equipment.

Optionally, the resource configuration type of the SRS resource set is:

Optionally, the processing module 501 is further configured to:

determining that the resources of the SRS resource set are configured to be of the first type, wherein the first resource combination comprises one or more first SRS resources, and the first SRS resources are first candidate SRS resources measured by the network equipment in the SRS resource set;

and acquiring the number of the first SRS resources, and determining the indication information based on the number.

Optionally, the processing module 501 is further configured to:

determining that the resources of the SRS resource set are configured to be of the second type, wherein the first resource combination comprises a second SRS resource, and the second SRS resource is a second candidate SRS resource measured by the network equipment in the SRS resource set;

and generating the indication information based on the number of ports configured by the second SRS resource.

Optionally, the processing module 501 is further configured to:

Determining that the resources of the SRS resource set are configured to be of the third type, wherein the first resource combination includes one or more first ports, and the first ports are ports measured by the network device in the plurality of candidate ports;

the indication information is generated based on the number of the first ports.

Optionally, the SRS resource set is one of the following types:

a periodic SRS resource set; or alternatively

A semi-persistent SRS resource set; or alternatively

And (3) an aperiodic SRS resource set.

Optionally, the number of data transmission layers corresponding to the precoding matrix used for PUSCH transmission is smaller than or equal to the maximum number of data transmission layers supported by the terminal device.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another communication device 60 according to an embodiment of the application. The communication device 60 may be a network device, a terminal device (such as the terminal device in the foregoing method embodiment), a chip system, a processor or the like that supports the network device to implement the foregoing method, or a chip, a chip system, a processor or the like that supports the terminal device to implement the foregoing method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communication device 60 may include one or more processors 601. The processor 601 may be a general purpose processor or a special purpose processor or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 60 may further include one or more memories 602, on which a computer program 604 may be stored, and the processor 601 executes the computer program 604, so that the communication device 60 performs the method described in the above method embodiments. Optionally, the memory 602 may also store data. The communication device 60 and the memory 602 may be provided separately or may be integrated.

Optionally, the communication device 60 may also include a transceiver 605, an antenna 606. The transceiver 605 may be referred to as a transceiver unit, transceiver circuitry, or the like, for implementing the transceiver function. The transceiver 605 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 607 may also be included in the communication device 60. The interface circuit 607 is used to receive code instructions and transmit them to the processor 601. The processor 601 executes the code instructions to cause the communication device 60 to perform the method described in the method embodiments described above.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 601. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 601 may store a computer program 603, the computer program 603 running on the processor 601 may cause the communication device 60 to perform the method described in the method embodiments above. The computer program 603 may be solidified in the processor 601, in which case the processor 601 may be implemented in hardware.

In one implementation, the communication device 60 may include circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in the present application may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiment may be a network device or a terminal device (such as the first terminal device in the foregoing method embodiment), but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 6. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 7. The chip shown in fig. 7 includes a processor 701 and an interface 702. Wherein the number of processors 701 may be one or more, and the number of interfaces 702 may be a plurality.

Optionally, the chip further comprises a memory 703, the memory 703 being for storing the necessary computer programs and data.

The chip may be used to implement the functionality of any of the method embodiments described above.

Those of skill in the art will further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (step) described in connection with the embodiments of the present application may be implemented by electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The embodiment of the application also provides a communication system, which comprises the communication device as a terminal device (such as the terminal device in the embodiment of the method) and the communication device as a network device in the embodiment of the foregoing fig. 5, or comprises the communication device as a terminal device (such as the terminal device in the embodiment of the method) and the communication device as a network device in the embodiment of the foregoing fig. 6.

The application also provides a readable storage medium having stored thereon instructions which when executed by a computer perform the functions of any of the method embodiments described above.

The application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions according to the embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in the present application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the application, for a technical feature, the technical features of the technical feature are distinguished by a first, a second, a third, a, B, a C, a D and the like, and the technical features described by the first, the second, the third, the a, the B, the C, the D are not in sequence or in order of magnitude.

The correspondence relation shown in each table in the application can be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, and the present application is not limited thereto. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table of the present application, the correspondence relation shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in the present application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-sintering.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software 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.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for receiving information on a PUSCH based on a physical uplink shared channel of a non-codebook, the method being performed by a terminal device, the method comprising:

transmitting precoded SRS resources in a Sounding Reference Signal (SRS) resource set of a non-codebook to network equipment;

receiving indication information sent by the network equipment, wherein the indication information is used for indicating a transmission rank indication TRI corresponding to a precoding matrix used for PUSCH transmission;

determining a first resource combination corresponding to the TRI through a first mapping relation between a candidate data transmission layer and a candidate resource combination based on the TRI, wherein the first resource combination is determined from the SRS resource set based on the precoded SRS resource, and the first resource combination is a combination of one or more SRS resources or a port combination of one SRS resource;

and determining a precoding matrix used by the PUSCH transmission based on the first resource combination.
The method of claim 1, wherein receiving the indication information sent by the network device comprises:

receiving a sounding reference Signal Resource Indication (SRI) for indicating the TRI; alternatively, the TRI is received.
The method of claim 2, wherein the determining a first resource combination based on the TRI by a first mapping between candidate data transport layers and candidate resource combinations comprises:

determining the TRI based on the SRI and a second mapping relationship between a candidate SRI and a candidate TRI, in the case that the SRI indication is for the TRI;

and determining a first resource combination corresponding to the TRI based on the first mapping relation.
A method according to any of claims 1-3, characterized in that the resource configuration type of the SRS resource set is:

a first type: the SRS resource set comprises a plurality of first candidate SRS resources, and the first candidate SRS resources are single-port SRS resources; or alternatively

The second type: the SRS resource set comprises at least one second candidate SRS resource, and different second candidate SRS resources have different numbers of ports; or alternatively

Third type: the SRS resource set includes a third candidate SRS resource having a plurality of candidate ports.
The method of claim 4, wherein the determining a precoding matrix for use with the PUSCH transmission based on the first combination of resources comprises:

Determining that the resources of the SRS resource set are configured to be of the first type, wherein the first resource combination comprises one or more first SRS resources, and the first SRS resources are first candidate SRS resources measured by the network equipment in the SRS resource set;

determining a precoding vector used correspondingly by the first SRS resource;

and determining the precoding matrix based on the precoding vector correspondingly used by the first SRS resource.
The method of claim 5, wherein the first mapping relationship includes a correspondence between a candidate TRI and first candidate SRS resources, different candidates TRI correspond to different candidate resource combinations formed by combining one or more first candidate SRS resources, and wherein the number and the number of first candidate SRS resources included in the candidate resource combinations are sequentially increased when the value of the candidate TRI is sequentially increased.
The method of claim 4, wherein the determining a precoding matrix for use with the PUSCH transmission based on the first combination of resources comprises:

determining that the resources of the SRS resource set are configured to be of the second type, wherein the first resource combination comprises a second SRS resource, and the second SRS resource is a second candidate SRS resource measured by the network equipment;

Determining a precoding matrix used by a port combination corresponding to the second SRS resource;

and determining a precoding matrix used by the second SRS resource correspondingly as the precoding matrix.
The method of claim 7, wherein the first mapping relationship comprises a correspondence between a candidate TRI and a second candidate SRS resource, the values of the candidate TRI and the numbers of the second candidate SRS resource are in one-to-one correspondence, wherein the numbers of the second candidate SRS resource and the number of ports included are sequentially increased when the values of the candidate TRI are sequentially increased.
The method of claim 4, wherein the determining a precoding matrix for use with the PUSCH transmission based on the first combination of resources comprises:

determining that resources of the SRS resource set are configured to the third type, the first combination of resources including one or more first ports, the first ports being ports of the plurality of candidate ports selected by the network device;

and acquiring a precoding vector of the first port, and determining the target precoding matrix based on the precoding vector corresponding to the first port.
The method of claim 8, wherein the first mapping relationship includes a correspondence between a candidate TRI and candidate ports, different candidates TRI corresponding to different candidate port combinations synthesized by one or more of the candidate ports, wherein the number of candidate ports and port numbers included in the candidate port combinations are sequentially increased when the value of the candidate TRI is sequentially increased.
The method of any of claims 1-10, wherein the set of SRS resources is one of:

a periodic SRS resource set; or alternatively

A semi-persistent SRS resource set; or alternatively

And (3) an aperiodic SRS resource set.
The method according to any one of claims 1-10, wherein the number of data transmission layers corresponding to the precoding matrix is less than or equal to the maximum number of data transmission layers supported by the terminal device.
A method of PUSCH transmission information based on a non-codebook, the method being performed by a network device, the method comprising:

receiving precoded SRS resources in a non-codebook SRS resource set sent by terminal equipment;

determining a first resource combination from the SRS resource set based on the precoded SRS resources, wherein the first resource combination is an SRS resource combination comprising one or more SRS resources or a port combination of one SRS resource;

Generating indication information based on the number of SRS resources or ports of SRS resources in the first resource combination, wherein the indication information is used for indicating a precoding matrix used for PUSCH transmission and a corresponding TRI;

and sending the indication information to the terminal equipment.
The method of claim 13, wherein the sending the indication information to the terminal device comprises:

determining the indication information as a sounding reference Signal Resource Indication (SRI), and sending the SRI to the terminal equipment, wherein the SRI is used for indicating the TRI; or,

and determining the indication information as the TRI and sending the TRI to the terminal equipment.
The method according to claim 13 or 14, wherein the resource configuration type of the SRS resource set is:

a first type: the SRS resource set comprises a plurality of first candidate SRS resources, and the first candidate SRS resources are single-port SRS resources; or alternatively

The second type: the SRS resource set comprises at least one second candidate SRS resource, and different second candidate SRS resources have different numbers of ports; or alternatively

Third type: the SRS resource set includes a third candidate SRS resource configured with a plurality of candidate ports.
The method of claim 15, wherein the generating the indication information based on the number of resources within the first combination of resources comprises:

determining that the resources of the SRS resource set are configured to be of the first type, wherein the first resource combination comprises one or more first SRS resources, and the first SRS resources are first candidate SRS resources measured by the network equipment in the SRS resource set;

and acquiring the number of the first SRS resources, and determining the indication information based on the number.
The method of claim 15, wherein the generating the indication information based on the number of resources within the first combination of resources comprises:

determining that the resources of the SRS resource set are configured to be of the second type, wherein the first resource combination comprises a second SRS resource, and the second SRS resource is a second candidate SRS resource measured by the network equipment in the SRS resource set;

and generating the indication information based on the port number of the second SRS resource.
The method of claim 15, wherein the generating the indication information based on the number of resources within the first combination of resources comprises:

Determining that the resources of the SRS resource set are configured to be of the third type, wherein the first resource combination includes one or more first ports, and the first ports are ports measured by the network device in the plurality of candidate ports;

the indication information is generated based on the number of the first ports.
The method according to any of claims 10-15, wherein the set of SRS resources is one of the following types:

a periodic SRS resource set; or alternatively

A semi-persistent SRS resource set; or alternatively

And (3) an aperiodic SRS resource set.
The method according to any one of claims 10-15, wherein the number of data transmission layers corresponding to the precoding matrix is less than or equal to the maximum number of data transmission layers supported by the terminal device.
A terminal device, comprising:

the receiving and transmitting module is used for sending precoded SRS resources in a non-codebook SRS resource set to the network equipment and receiving indication information sent by the network equipment, wherein the indication information is used for indicating TRIs corresponding to a precoding matrix used for PUSCH transmission;

the processing module is used for determining a first resource combination corresponding to the TRI through a first mapping relation between a candidate data transmission layer and the candidate resource combination based on the TRI, and determining a precoding matrix used by the PUSCH transmission based on the first resource combination; the first resource combination is determined from the SRS resource set based on the precoded SRS resources, and the first resource combination comprises one or more SRS resource combinations of SRS resources or is a port combination of one SRS resource;
A network device, comprising:

the receiving and transmitting module is used for receiving the precoded SRS resources in the SRS resource set of the non-codebook sent by the terminal equipment and sending indication information to the terminal equipment, wherein the indication information is used for indicating a precoding matrix used for PUSCH transmission and a corresponding TRI;

the processing module is used for determining a first resource combination from the SRS resource set based on the precoded SRS resources and generating the indication information based on the SRS resources or the number of ports of the SRS resources in the first resource combination; the first combination is an SRS resource combination comprising one or more SRS resources, or the first combination is a port combination of one SRS resource.
A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method according to any of claims 1 to 12.
A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method of any of claims 13 to 20.
A communication device, comprising: a processor and interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor for executing the code instructions to perform the method of any one of claims 1 to 12.
A communication device, comprising: a processor and interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor for executing the code instructions to perform the method of any one of claims 13 to 20.
A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 1 to 12 to be implemented.
A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 13 to 20 to be implemented.