CN117882468A

CN117882468A - Precoding indication method and device for supporting 8Tx (physical uplink shared channel) PUSCH (physical uplink shared channel) transmission based on non-codebook

Info

Publication number: CN117882468A
Application number: CN202280002730.8A
Authority: CN
Inventors: 高雪媛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2024-04-12
Also published as: WO2024031718A1

Abstract

The embodiment of the application discloses a precoding indication method supporting 8Tx based on PUSCH transmission and a device thereof, which can be applied to communication systems such as a long term evolution system, a fifth generation mobile communication system, a 5G New Radio (NR) system or other future novel mobile communication systems, and the method comprises the following steps: configuring N single-port SRS resources corresponding to PUSCH transmission based on non-codebook with the maximum more than 4 layers for terminal equipment; respectively configuring the N SRS resources into at least two SRS resource sets; and sending SRI to the terminal equipment. By implementing the embodiment of the application, the terminal equipment can be indicated to upload SRS resources used for transmission by configuring N single-port sounding reference signal SRS resources corresponding to the PUSCH transmission based on the non-codebook with the maximum layer more than 4 for the terminal equipment and sending the SRS resource indication SRI to the terminal equipment, so that fewer supported uplink SRS resources are avoided, and the uplink transmission speed is improved.

Description

Precoding indication method and device for supporting 8Tx (physical uplink shared channel) PUSCH (physical uplink shared channel) transmission based on non-codebook

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a precoding indication method and apparatus for supporting 8Tx based PUSCH transmission of a physical uplink shared channel based on a non-codebook.

Background

In wireless communication, a non-codebook uplink transmission scheme is a spatial multiplexing technique, which is different from codebook-based uplink transmission in that its precoding is obtained based on a certain criterion, instead of determining precoding among limited candidate values based on a fixed codebook. Compared with a transmission scheme based on a codebook, the overhead of precoding indication can be saved, and better performance can be obtained.

The more the number of layers for uplink transmission configured for the terminal device, the faster the uplink transmission speed, and the fewer the number of layers for non-codebook uplink transmission supported by the current protocol, and the higher uplink transmission speed is difficult to obtain.

Disclosure of Invention

The embodiment of the application provides a precoding indication method supporting 8Tx (physical uplink shared channel) based on a non-codebook and a device thereof, which can be applied to 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 novel mobile communication systems and other communication systems.

In a first aspect, an embodiment of the present application provides a precoding indication method supporting 8Tx non-codebook based PUSCH transmission, where the method includes:

configuring N single-port sounding reference signal SRS resources corresponding to PUSCH transmission based on a non-codebook for supporting a maximum transmission layer number of more than 4 layers for terminal equipment, wherein N is a positive integer greater than 4 and less than or equal to 8;

the N SRS resources are respectively configured into at least two SRS resource sets, and each SRS resource set comprises 4 SRS resources at maximum;

and sending SRI (SRS resource indication) to the terminal equipment, wherein the SRI is used for indicating at least one SRS resource in the configured N SRS resources, and the terminal equipment sends the SRI in the same precoding used by the at least one SRS resource indicated by the SRI used by the PUSCH.

Optionally, the method further comprises:

and independently configuring Lmax corresponding to each SRS resource set.

Optionally, the at least two SRS resource sets are indicated by at least two independent SRI indication fields, respectively.

Optionally, each of the SRI indication fields has a predefined correspondence with the SRS resource set.

Optionally, the bit number of each SRI indication field is defined by the number N of SRS resources contained in the corresponding SRS resource set _SRS And determining Lmax corresponding to the SRS resource set together, wherein bit overhead corresponding to each SRI indication domain is the same or different.

Optionally, the at least two SRS resource sets are jointly indicated through one SRI indication field.

Optionally, the method further comprises:

and sending bitmap information to the terminal equipment, wherein a predefined corresponding relation is formed between each bit in the bitmap information and each SRS resource, the SRI is used for indicating at least one SRS resource under the predefined corresponding relation and indicating the terminal equipment to send the PUSCH by using the precoding identical to that of the at least one SRS resource, and the SRI indicates that the number of the selected SRS resources is equal to the number of transmission layers actually scheduled by the PUSCH.

Optionally, the number of bits of the SRI indication field is 8 bits, where the valid bit of the SRI indication field is N, and N SRS resources are respectively configured correspondingly, where N _SRS And the number of SRS resource sets is correspondingly configured to the terminal equipment.

Optionally, the number of bits of the SRI indication field corresponds to N bits, wherein,n includes N in each SRS resource set configured _SRS 。

Optionally, the plurality of SRS reference signal sets are configured as any one of the following:

A periodic SRS resource set;

a semi-persistent SRS resource set;

aperiodic SRS resource set.

In a second aspect, an embodiment of the present application provides a communications device, where the communications 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, a function of the communications device may be provided in some 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 one implementation, the communication device includes:

A first configuration module, configured to configure, for a terminal device, N single-port sounding reference signal SRS resources corresponding to PUSCH transmission based on a non-codebook of at least 4 layers, where N is a positive integer greater than 4 and less than or equal to 8;

the second configuration module is used for respectively configuring the N SRS resources into at least two SRS resource sets, and each SRS resource set comprises 4 SRS resources at maximum;

and the receiving and transmitting module is used for sending SRI (SRS resource indication) to the terminal equipment, wherein the SRI is used for indicating at least one SRS resource in the configured N SRS resources, and the terminal equipment sends the SRI in the same precoding used by the at least one SRS resource indicated by the SRI used by the PUSCH.

In a third aspect, embodiments of the present application provide a communications device comprising a processor, which when calling a computer program in memory, performs the method of the first aspect described above.

In a fourth aspect, embodiments of the present application provide a communication device comprising 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 a fifth 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 first aspect described above.

In a sixth aspect, an embodiment of the present application provides a precoding indication system supporting non-codebook PUSCH transmission of 8Tx, where the system includes a communication device according to the third aspect and a communication device according to the fourth aspect, or the system includes a communication device according to the fifth aspect and a communication device according to the sixth aspect, or the system includes a communication device according to the seventh aspect and a communication device according to the eighth aspect, or the system includes a communication device according to the ninth aspect and a communication device according to the tenth aspect.

In a seventh aspect, an embodiment of the present invention 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 according to the first aspect.

In an eighth 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 first aspect described above.

In a ninth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a terminal device to implement the functionality referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above 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 tenth 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.

Drawings

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

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

fig. 2 is a flowchart of a precoding indication method supporting 8Tx non-codebook based PUSCH transmission provided in an embodiment of the present application;

fig. 3 is a flowchart illustrating a precoding indication method supporting 8Tx non-codebook based PUSCH transmission provided in an embodiment of the present application;

Fig. 4 is a flowchart of a precoding indication method supporting 8Tx non-codebook based PUSCH transmission provided in 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 another 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

For ease of understanding, the terms referred to in this application are first introduced.

Sounding reference signals (sounding reference signal, SRS)

The Reference Signals (RSs) include channel state information reference signals (channel state information reference signal, CSI-RS), sounding reference signals (sounding reference signal, SRS), positioning reference signals (positioning reference signal, PRS), phase reference signals (tracking reference signal, TRS), etc., and the SRS includes an SRS for channel state information measurement based on codebook transmission or non-codebook transmission or an SRS for beam measurement or an SRS for positioning measurement.

In a wireless communication network, an Evolved Node B (eNodeB) typically allocates a portion of the system bandwidth to a particular user equipment UE. I.e. a specific frequency region resource is allocated to the UE at a specific time. The eNodeB knows the area with higher quality in the specific frequency area through the SRS, and preferentially distributes the area to the UE so as to ensure the service quality of the UE, and the SRS is used for providing reference for the scheduling resource of the eNodeB.

In order to better understand a precoding indication method supporting PUSCH transmission based on a non-codebook of 8Tx disclosed in the embodiments of the present application, a communication system to which the embodiments of the present application are applicable is first described below.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, one network device and one terminal device, and the number and form of devices shown in fig. 1 are only used as examples and not limiting to the embodiments 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 embodiments 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 on the network side for transmitting or receiving signals. 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 device form adopted by the network device. The network device provided in this embodiment of the present application may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the network device, for example, a base station, where functions of part of the protocol layers are placed in the CU for centralized control, and functions of part or all of the protocol layers are distributed in the DU for centralized control of the DU by the CU.

The terminal device 102 in this 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 wireless communications, multi-antenna precoding of a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) supports two different mode configurations, one is codebook-based transmission and one is non-codebook-based transmission. Which mode to use is generally selected based on whether reciprocity of the uplink and downlink channels is established. Regardless of the precoding mode, the terminal is required to transmit SRS (sounding reference signal) for the base station to estimate the uplink channel state CSI.

For uplink transmission not based on the codebook, the terminal device sends a maximum capacity of simultaneously-transmittable SRS resource number to the base station, so as to inform the base station that the terminal device can transmit the SRS resource number.

Assuming that the base station indicates the terminal in the slot n through SRS resource indication (Sounding Resource Indicator, SRI), the SRS resource transmission corresponding to the base station is the SRS transmission last before the slot n.

And the terminal equipment determines the limit of precoding indication according to the maximum layer number maxRank in the high-layer parameter PUSCH-Config, wherein the SRS resource number indicated by SRI is not more than the maximum transmission layer number maxRank.

The network side device may configure one associated CSI-RS resource for channel measurement for the SRS resource set for non-codebook based uplink transmission. And the terminal obtains the precoding of SRS transmission of the SRS resource set for non-codebook uplink transmission according to the associated CSI-RS resource.

For uplink transmission based on a non-codebook, in an actual system, measurement is generally required to be performed on a downlink configured CSI-RS, and a terminal obtains uplink channel information by measuring a downlink signal by using uplink-downlink reciprocity. The method mainly comprises the following steps:

the network side equipment configures associated downlink CSI-RS for detecting a downlink channel of the terminal for transmission based on a non-codebook;

the terminal equipment calculates and selects a recommended precoding matrix through a downlink reference signal (CSI-RS), and simultaneously transmits a set of formed SRS resources according to the precoding matrix on a configured SRS resource set (SRS resource set), namely, transmits the set of SRS resources carrying precoding information;

a base station in network side equipment detects an uplink channel of SRS, and the network side equipment simultaneously carries out resource scheduling on terminal equipment and informs the terminal equipment through downlink signaling DCI, wherein a precoding matrix used for PUSCH transmission is selected through SRI indication in the DCI;

the terminal equipment uses a precoding matrix indicated by the base station to determine actual precoding and the number of actually scheduled transmission layers, and sends the PUSCH; and the terminal determines the limit of the precoding indication according to the higher-layer parameter maxRank, and the SRS resource number indicated by the SRI is not more than maxRank. In order to realize the indication of the precoding matrix actually used by the terminal by the network, for the transmission based on the non-codebook, the network needs to configure an SRS resource set for the terminal.

Only uplink transmission to maximum 4 layers is supported in the current communication protocol, and downlink transmission to maximum 8 layers can be supported. The research objective of R18 includes up-enhancing the number of transmit antennas to a maximum of 8 antennas for supporting higher up-transmission rates comparable to down-link.

In order to support non-codebook-based PUSCH transmission under uplink 8Tx, one of the ideas is to consider flexible configuration of configuring multiple SRS resource sets, which has the advantages that a new SRI indication table is not required to be designed, but the support for 8Tx is realized based on the existing SRI table as much as possible, the corresponding precoding indication scheme is required to be reconsidered, and meanwhile, the indication flexibility and signaling overhead are required to be considered.

The specific method of SRI indication field indication for non-codebook transmission can be as follows:

the following Lmax is a transport layer number limitation configured by the network side device, and the terminal device may decide the corresponding table of the SRI and the number of bits of the SRI indication field according to this parameter configuration.

TABLE 1

TABLE 2

TABLE 3 Table 3

TABLE 4 Table 4

As shown in the above table, when table 1 is configured for the network side device, the maximum transmission layer lmax=1, the corresponding bit field is used to support the SRI indication during the non-codebook PUSCH transmission. Table 2 is a corresponding bit field for supporting SRI indication during non-codebook PUSCH transmission when maximum transmission layer lmax=2 configured by a network side device, table 3 is a corresponding bit field for supporting SRI indication during non-codebook PUSCH transmission when maximum transmission layer lmax=3 configured by a network side device, table 4 is a corresponding bit field for supporting SRI indication during non-codebook PUSCH transmission when maximum transmission layer lmax=4 configured by a network side device, N _SRS The number of SRS resource sets configured to the terminal equipment.

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

The precoding indication method supporting 8Tx non-codebook based PUSCH transmission and the apparatus thereof provided by the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a precoding indication method supporting non-codebook based PUSCH transmission of 8Tx according to an embodiment of the present application. The method is performed by a network side device. As shown in fig. 2, the method may include, but is not limited to, the steps of:

step S201: configuring N single-port sounding reference signal SRS resources corresponding to PUSCH transmission based on a non-codebook for supporting a maximum transmission layer number of more than 4 layers for terminal equipment, wherein N is a positive integer greater than 4 and less than or equal to 8;

In this embodiment, PUSCH transmission by the terminal device is uplink transmission based on a non-codebook, and the terminal device may send the supported maximum number of transmission layers to the base station. The network side equipment can configure a plurality of SRS resources for the terminal according to the capacity corresponding to the maximum transmission layer number which can be supported by the terminal, so that the terminal equipment adapts to the transmission of precoding information carried by the corresponding SRS according to the number of the SRS resources configured by the network side equipment. In order to support the terminal device to utilize more layers to perform PUSCH transmission in uplink, the network side device firstly configures a plurality of corresponding single-port SRS resources for the terminal device. In order to support the terminal equipment to perform PUSCH transmission with more than four layers, the number of single-port SRS resources configured by the network side equipment is N, where N is a positive integer greater than 4 and less than or equal to 8, and the network also configures a maximum layer number limit Lmax for scheduling for the terminal, so as to limit the maximum number of transmission layers that the terminal can support under the current scheduling configuration.

Step S202: the N SRS resources are respectively configured into at least two SRS resource sets, and each SRS resource set comprises 4 SRS resources at maximum;

in the embodiment of the present application, at most 4 SRS resources, namely N, are configured for the terminal device in the current single SRI mapping table _SRS Upper limit of 4, in the absence of development of N _SRS On the premise that the upper limit of the new mapping table is higher, if 5-8 SRS resources are to be configured for the terminal equipment by using the existing SRI mapping table to support the terminal equipment to perform the PUSCH transmission based on the non-codebook with the transmission layer number of more than 4 layers,multiple SRS resource sets configured for the terminal device are required, and each resource set may be applicable to an existing SRI mapping table. The network side equipment configures the N SRS resources into at least two SRS resource sets respectively so as to facilitate the configuration of the SRS resources, and configures the SRS resources in one SRS resource set for the terminal equipment each time, wherein the maximum of each SRS resource set can comprise 4 SRS resources. Step S203: and sending SRI (SRS resource indication) to the terminal equipment, wherein the SRI is used for indicating at least one SRS resource in the configured N SRS resources, and the terminal equipment sends the SRI in the same precoding used by the at least one SRS resource indicated by the SRI used by the PUSCH.

In the embodiment of the present application, the uplink transmission is PUSCH transmission not based on a codebook, and the network side device configures a plurality of SRS resources for the terminal, where each SRS carries the terminal and indicates, through the SRI, the SRS resource selected by the network side device. The terminal device may determine, according to the SRI, that PUSCH transmission uses the same precoding used for SRS transmission corresponding to the SRS resource indicated by the SRI. Each SRS resource is configured as 1 antenna port and carries precoding of a corresponding layer, and the terminal can also determine the number of layers of uplink transmission through the number of SRS resources indicated by the SRI.

By implementing the embodiment of the application, the terminal equipment can be indicated to upload SRS resources used for transmission by configuring N single-port sounding reference signal SRS resources corresponding to the PUSCH transmission based on the non-codebook with the maximum layer more than 4 for the terminal equipment and sending the SRS resource indication SRI to the terminal equipment, so that fewer supported uplink SRS resources are avoided, and the uplink transmission speed is improved.

Referring to fig. 3, fig. 3 is a flowchart illustrating a precoding indication method for supporting 8Tx non-codebook-based PUSCH transmission according to an embodiment of the present application. The method is performed by a network side device. As shown in fig. 3, the method may include, but is not limited to, the steps of:

step S301: and independently configuring Lmax corresponding to each SRS resource set.

In the embodiment of the present application, the maximum transmission layer number configured by the network side device is Lmax, where the layer number is a spatial transmission stream number corresponding to space division multiplexing MIMO transmission performed by the terminal. The time-frequency resource positions of different SRSs are different, the number of the possible maximum code division terminal equipment is different, and the maximum transmission layer number is set to be different by independently configuring Lmax corresponding to each SRS resource set.

In the embodiment of the present application, one SRI is used for each SRS resource set to indicate in at least two SRS resource sets, and different SRS resource sets are allowed to be indicated by different SRI indication domains respectively.

For example, two SRS resource sets (SRS resource set 1, SRS resource set 2) are indicated by 2 SRI (SRI 1 and SRI 2) indication fields in total. In one possible embodiment, the SRS resource set 1 and the SRS resource set 2 are in one-to-one correspondence with the SRI1 indication domain and the SRI2 indication domain, and the correspondence may be defined according to a predefined relationship, where the predefined relationship is that the SRS resource set 1 is indicated by the SRI1 indication domain and the SRS resource set 2 is indicated by the SRI2 indication domain.

In a possible embodiment, the correspondence between the SRS resource set and the SRI indication field is determined according to the size of the index ID of the SRS resource set, where the index ID of the SRS resource set is sequentially, from small to large, SRS resource set 1 and SRS resource set 2. The SRS resource set with the smallest index is used as the first SRS resource set to correspond to the first SRI indication field (indication field of SRI 1), and then sequentially corresponds to the first SRS resource set, that is, SRS resource set 2 is used as the second SRS resource set and indicated by the SRI2 indication field.

In the embodiment of the present application, the network side device indicates a correspondence between an SRS resource set/SRS resource and precoding, an association needs to be defined between an SRI indication domain and the SRS resource/SRS resource set, and the network side predefines the correspondence between the SRI indication domain and the SRS resource set. The SRS indication does not distinguish between layers, but only represents precoding information corresponding to one data layer, and specifically, the correspondence between which SRS resource and which layer is corresponding to the terminal device.

In the embodiment of the present application, the number of bits of each SRI corresponds to the existing SRI mapping table, but the parameters are configured independently, so that the number of bits of each SRI field may be the same or different

In a possible embodiment, the overhead of each of the SRI indication fields is based onAnd (5) calculating to obtain the product.

In the embodiment of the application, one SRI indication field is utilized to indicate a plurality of SRS resource sets.

Referring to fig. 4, fig. 4 is a flowchart illustrating a precoding indication method for supporting 8Tx non-codebook-based PUSCH transmission according to an embodiment of the present application. The method is performed by a network side device. As shown in fig. 4, the method may include, but is not limited to, the steps of:

step S401: and sending bitmap information to the terminal equipment, wherein a predefined corresponding relation is formed between each bit in the bitmap information and each SRS resource, the SRI is used for indicating at least one SRS resource under the predefined corresponding relation and indicating the terminal equipment to send the PUSCH by using the precoding identical to that of the at least one SRS resource, and the SRI indicates that the number of the selected SRS resources is equal to the number of transmission layers actually scheduled by the PUSCH.

Optionally, the number of bits of the SRI indication field is 8 bits, where the valid bit of the SRI indication field is N, and N SRS resources are respectively configured correspondingly, where N _SRS For corresponding allocation toThe SRS resource set number of the terminal equipment.

In the embodiment of the present application, the number of bits of the SRI indication field is 8 bits to support non-codebook-based PUSCH transmission indicating maximum 8 Tx. The network side equipment configures N SRS resources for the terminal equipment, and the valid bits of the SRI indication domain are N.

The valid bits may be N bits of the upper MSB or N bits of the lower LSB.

Optionally, the number of bits of the SRI indication field corresponds to N bits, where N includes N in each SRS resource set configured _SRS 。

a periodic SRS resource set;

a semi-persistent SRS resource set;

aperiodic SRS resource set.

In a possible embodiment, one SRS resource set may be configured for the terminal device according to one SRI, and when 2 different SRS resource sets are configured for the terminal device, configuration needs to be performed through two SRIs, where the SRS resource set to be configured for the terminal device by the network side device is a first SRS resource set and a second SRS resource set, where each of the first SRS resource set and the second SRS resource set includes 4 SRS resources, and a total of 8 SRS resources, that is, the number N of SRS resources included in the first SRS resource set _SRS =4, corresponding to SRS resources 0-3, and lmax=4 corresponding to the first SRS resource set, the terminal root may query the table corresponding to lmax=4, that is, table 4, where table 4 is a predefined table, and query N in table 4 _SRS The table content corresponding to=4, and the terminal device determines one or more SRS resources selected from the first SRS resource set, that is, the number N of SRS resources included in the second SRS resource set according to the SRI indication field _SRS =4, corresponding to SRS resources 4-7, and lmax=4 corresponding to the second SRS resource set, the terminal root may query the table corresponding to lmax=4, that is, table 4, where table 4 is a predefined table, and query N in table 4 _SRS In the table corresponding to=4And the terminal equipment determines one or more SRS resources selected from the second SRS resource set according to the SRI indication domain. If the SRI1 indication field is 0, selecting the first SRS resource in the first SRS resource set, namely SRS resource 0; if the SRI indication field is 4, the first SRS resource and the second SRS resource in the second SRS resource set, i.e. resource 4 and resource 5, are selected, so that the SRS resource selected by the corresponding 8 ports is {0,4,5}, and the transmission layer number is 3, and the PUSCH will use the precoding corresponding to the SRS resource {0,4,5} for PUSCH transmission

In a possible embodiment, one SRS resource set may be configured for the terminal device according to one SRI, and when 2 different SRS resource sets are configured for the terminal device, configuration needs to be performed through two SRIs, where the SRS resource set to be configured for the terminal device by the network side device is a first SRS resource set and a second SRS resource set, where each of the first SRS resource set and the second SRS resource set includes 4 SRS resources, and total 8 SRS resources. If the network side equipment adopts the bit bitmap to indicate the first SRS resource set and the second SRS resource set, 8 SRS resources correspondingly configured in the two SRS resource sets are indicated corresponding to 8 bits, wherein the number N of the SRS resources contained in the first SRS resource set is indicated _SRS =4, corresponding to SRS resources 0-3, corresponding to bits 0-3 in the bitmap, number N of SRS resources contained in the second SRS resource set _SRS =4, corresponding to SRS resources of 4-7 bits, corresponding to bits 4-7 bits in the bitmap. For the case where the base station selects SRS resource {0,4,5}, and the number of transmission layers is 3, the bit map correspondence is indicated as 10001100 if the correspondence is indicated from SRS resource 0.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the perspective of the network device and the terminal device, respectively. In order to implement the functions in the methods provided in the embodiments 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 present application. The communication device 50 shown in fig. 5 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 the terminal device in the foregoing method embodiment), or may be a device in the terminal device, or may be a device that can be used in a matching manner with the terminal device. Alternatively, the communication device 50 may be a network device, a device in a network device, or a device that can be used in cooperation with a network device.

The communication apparatus 50 is a network device:

Referring to fig. 6, fig. 6 is a schematic structural diagram of another communication device 60 according to an embodiment of the present 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 603 may be stored, and the processor 601 executes the computer program 603, 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 604, an antenna 605. The transceiver 604 may be referred to as a transceiver unit, a transceiver circuit, etc. for implementing a transceiver function. The transceiver 604 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; 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 606 may also be included in the communication device 60. The interface circuit 606 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.

The communication device 60 is a terminal device (such as the terminal device in the foregoing method embodiment): the processor 601 is configured to execute step S202 in fig. 2; step S302 in fig. 3a is performed; step S402 in fig. 4; step S502 in fig. 5; or step S604 in fig. 6. The transceiver 604 is used to perform step S601 in fig. 6.

The communication apparatus 60 is a network device: the transceiver 604 is configured to perform step S201 in fig. 2; step S301 in fig. 3 is performed.

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 herein 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 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.

For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present application (such as the terminal device in the foregoing method embodiment):

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

Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as 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 precoding indication system supporting 8Tx non-codebook-based PUSCH transmission, 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 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 fig. 6.

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

The present 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 described in accordance with 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 this 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 present application, for a technical feature, the technical features of the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

The correspondence relationship shown in each table in the present application may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, which are not limited in this application. 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 in the present application, the correspondence 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 this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

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 specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by 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 precoding indication method for supporting 8Tx non-codebook-based physical uplink shared channel PUSCH transmission, wherein the method is performed by a network side device, the method comprising:

configuring N single-port sounding reference signal SRS resources corresponding to PUSCH transmission based on a non-codebook for supporting a maximum transmission layer number of more than 4 layers for terminal equipment, wherein N is a positive integer greater than 4 and less than or equal to 8;

the N SRS resources are respectively configured into at least two SRS resource sets, and each SRS resource set comprises 4 SRS resources at maximum;

and sending SRI (SRS resource indication) to the terminal equipment, wherein the SRI is used for indicating at least one SRS resource in the configured N SRS resources, and the terminal equipment sends the SRI in the same precoding used by the at least one SRS resource indicated by the SRI used by the PUSCH.
The method as recited in claim 1, further comprising:

and independently configuring Lmax corresponding to each SRS resource set.
The method of claim 1, wherein the at least two SRS resource sets are each indicated by at least two independent SRI indication fields.
The method of claim 3, wherein each of the SRI indication fields has a predefined correspondence with the set of SRS resources.
The method of claim 4, wherein the number of bits for each of the SRI indication fields is determined by a number of SRS resources N contained by a corresponding set of SRS resources _SRS And determining Lmax corresponding to the SRS resource set.
The method of claim 1, wherein the at least two SRS resource sets are jointly indicated by one SRI indication field.
The method as recited in claim 6, further comprising:

and sending bitmap information to the terminal equipment, wherein a predefined corresponding relation is formed between each bit in the bitmap information and each SRS resource, the SRI is used for indicating at least one SRS resource under the predefined corresponding relation and indicating the terminal equipment to send the PUSCH by using the precoding identical to that of the at least one SRS resource, and the SRI indicates that the number of the selected SRS resources is equal to the number of transmission layers actually scheduled by the PUSCH.
The method of claim 6, wherein the number of bits of the SRI indication field is 8 bits, wherein the valid bit of the SRI indication field is N, and N SRS resources are respectively and correspondingly configured, wherein N _SRS And the number of SRS resource sets is correspondingly configured to the terminal equipment.
The method of claim 6, wherein the number of bits of the SRI indication field corresponds to N bits, wherein N comprises N in each SRS resource set configured respectively _SRS 。
The method of claim 6, wherein the plurality of SRS reference signal sets are configured as any one of:

a periodic SRS resource set;

a semi-persistent SRS resource set;

aperiodic SRS resource set.
A precoding indication device supporting 8Tx non-codebook based physical uplink shared channel PUSCH transmission, the device being applied to a network side device, comprising:

a first configuration module, configured to configure, for a terminal device, N single-port sounding reference signal SRS resources corresponding to PUSCH transmission based on a non-codebook of at least 4 layers, where N is a positive integer greater than 4 and less than or equal to 8;

the second configuration module is used for respectively configuring the N SRS resources into at least two SRS resource sets, and each SRS resource set comprises 4 SRS resources at maximum;

and the receiving and transmitting module is used for sending SRI (SRS resource indication) to the terminal equipment, wherein the SRI is used for indicating at least one SRS resource in the configured N SRS resources, and the terminal equipment sends the SRI in the same precoding used by the at least one SRS resource indicated by the SRI used by the PUSCH.
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 10.
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 10.
A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 1 to 10 to be implemented.