CN118202599A

CN118202599A - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN118202599A
Application number: CN202180103840.9A
Authority: CN
Inventors: 黄莹沛; 陈文洪; 史志华; 方昀; 刘哲
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2024-06-14
Also published as: WO2023123409A1

Abstract

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment. The method of wireless communication includes: the terminal equipment receives a first sounding reference signal SRS resource indication SRI, wherein the first SRI is used for determining at least one first SRS resource. The embodiment of the application can realize that at least one SRS resource, such as at least one first SRS resource of a broadband and/or at least one second SRS resource of a subband, is indicated through the SRI, so that the SRI can be flexibly indicated, and the efficiency of wireless communication is improved.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, and more particularly relates to a wireless communication method, terminal equipment and network equipment.

Background

When the terminal equipment sends uplink data, precoding processing is needed to be carried out on the uplink data so as to obtain uplink precoding gain. The precoding process is generally divided into two parts: analog domain processing and digital domain processing. Analog domain processing maps radio frequency signals onto physical antennas for transmitted analog signals, typically using beamforming. The digital domain processing is generally performed on a baseband for digital signals, and a precoding matrix is adopted to precode the digital signals, so that data of a transmission layer is mapped to a radio frequency port. Because of the limited number of radio frequency channels of the terminal device, two processing modes are generally adopted at the same time, namely, the digital signal is precoded, and then the analog signal is shaped by adopting wave beams. Uplink data transmission is classified into codebook-based transmission and non-codebook-based transmission according to the difference of precoding schemes.

In the uplink non-codebook-based precoding manner, the network side configures a Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) resource set dedicated for non-codebook transmission for the terminal device. The terminal equipment estimates a precoding matrix through a channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS) and forms the precoding matrix to each SRS port, the terminal equipment can send SRS on a plurality of SRS resources in a set, the SRS on each SRS resource adopts different forms, the network side selects the best SRS resource from the SRS resources, and meanwhile, the resource index is indicated to the terminal equipment through SRS resource indication (SRS resource indicator, SRI), so that the terminal equipment adopts corresponding beams of the SRS resources to carry out beam forming on data.

Currently, in non-codebook based uplink data transmission, the SRI may indicate at least one SRS resource of an uplink wideband, where each transmission layer of uplink data corresponds to at most one SRS resource. Therefore, how to flexibly indicate SRI is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which can flexibly indicate SRI, thereby being beneficial to improving the efficiency of wireless communication.

In a first aspect, a method of wireless communication is provided, the method comprising:

The terminal equipment receives a first sounding reference signal SRS resource indication SRI, wherein the first SRI is used for determining at least one first SRS resource.

In a second aspect, there is provided a method of wireless communication, the method comprising:

The network device transmits a first sounding reference signal, SRS, resource indication, SRI, the first SRI being used to determine at least one first SRS resource.

In a third aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device comprises functional modules for performing the method in the first aspect described above.

In a fourth aspect, a network device is provided for performing the method in the second aspect.

In particular, the network device comprises functional modules for performing the method in the second aspect described above.

In a fifth aspect, a terminal device is provided comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect described above.

In a seventh aspect, there is provided an apparatus for implementing the method of any one of the first to second aspects.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method of any of the first to second aspects as described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method of any one of the first to second aspects.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects above.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any of the first to second aspects described above.

By the technical scheme, the SRI can be used for indicating at least one SRS resource, such as at least one first SRS resource of a broadband and/or at least one second SRS resource of a subband, so that the SRI can be flexibly indicated, and the efficiency of wireless communication can be improved.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which embodiments of the present application apply.

Fig. 2 is a schematic diagram of non-codebook based transmission.

Fig. 3 is a schematic flow chart of a method of wireless communication provided in accordance with an embodiment of the present application.

Fig. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device provided in accordance with an embodiment of the present application.

Fig. 7 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication system provided in accordance with an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art to which the application pertains without inventive faculty, are intended to fall within the scope of the application.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio Service (GENERAL PACKET Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio, NR) system, NR system evolution system, LTE-based access to unlicensed spectrum on unlicensed spectrum, NR-based access to unlicensed spectrum, NR-U on unlicensed spectrum, non-terrestrial communication network (Non-TERRESTRIAL NETWORKS, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (WIRELESS FIDELITY, WIFI), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional Communication system is limited and easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-machine (Machine to Machine, M2M) Communication, machine type Communication (MACHINE TYPE Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) Communication, or internet of vehicles (Vehicle to everything, V2X) Communication, etc., and the embodiments of the present application can also be applied to these Communication systems.

In some embodiments, the communication system in the embodiments of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a stand-alone (Standalone, SA) networking scenario.

In some embodiments, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; or the communication system in the embodiment of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Embodiments of the present application are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), 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 (SELF DRIVING), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (SMART GRID), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (SMART CITY), or a wireless terminal device in smart home (smart home), or the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device or a base station (gNB) in an NR network, a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

By way of example, and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. In some embodiments, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth Orbit (medium earth Orbit, MEO) satellite, a geosynchronous Orbit (geostationary earth Orbit, GEO) satellite, a high elliptical Orbit (HIGH ELLIPTICAL Orbit, HEO) satellite, or the like. In some embodiments, the network device may also be a base station located on land, in water, etc.

In the embodiment of the present application, a network device may provide services for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (SMALL CELL), where the small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

An exemplary communication system 100 to which embodiments of the present application may be applied is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices, and in some embodiments, the communication system 100 may include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited by the embodiments of the present application.

In some embodiments, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined may refer to what is defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in the present application.

In order to better understand the embodiment of the present application, the existing uplink non-codebook transmission procedure will be described.

Fig. 2 shows a schematic diagram of a non-codebook based transmission. As shown in fig. 2, the network device is, for example, a gNB, and the terminal device is, for example, a UE. First, the gNB configures a set of Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) resources dedicated for non-codebook transmission for the UE, including SRS 1-SRS 4, for example. Referring to fig. 2, the gnb may transmit a channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS) to the UE, from which the UE estimates a precoding matrix and shapes onto each SRS port. This process may be referred to as precoder estimation (Estimationofprocoder). Thereafter, the UE transmits SRS on a plurality of SRS resources in the SRS resource set, the SRS on each SRS resource employing a different excipient. And the gNB selects the best one or more SRS resources from the SRS resources, and indicates the resource index of the SRS resources to the UE through the SRI, so that the UE adopts the corresponding wave beam of the SRS resources to carry out wave beam forming on the data. Then, the UE performs Uplink data transmission according to the SRI, and may perform beamforming by using a beam of SRS 2 in a transmission Layer 1 (Layer 1) of a Physical Uplink common channel (Physical Uplink SHARED CHANNEL, PUSCH) and using a beam of SRS3 in a transmission Layer 2 (Layer 2), for example. Wherein each SRS port corresponds to one demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS) port.

Illustratively, the number of SRS resources in the SRS resource set may be N _srs. As an example, N _srs may be the number of SRS resources in the SRS resource set configured for the higher layer parameters SRS-ResourceSetToAddModList (N _SRS is the number of configured SRS resources in the SRS resource set configured by higher layer parameter srs-ResourceSetToAddModList).

For example, the number of transmission layers of PUSCH (may also be referred to as the maximum number of transmission layers) may be L _max. Exemplary, if the UE supports processing the maximum MIMO layer number, and the serving cell's PUSCH is configured with the higher layer parameters of the maximum MIMO layer number, then L _max may give (if UE supports operation with maxMIMO-Layers and the higher layer parameter maxMIMO-Layers of PUSCH-ServingCellConfig of the serving cell is configured,L _max is given by that parameter). by this parameter or else L _max may give the maximum value of the transmission layer of the PUSCH of the non-codebook transmission of the serving cell supported by the UE (L _max is given by the maximum number of layers for PUSCH supported by the UE for the serving cell for non-codebook based operation)

Illustratively, the SRI may include at least two Bit map indexes (Bit FIELD MAPPED to index), and a resource index for SRS resources corresponding to each Bit FIELD MAPPED to index. When the number of transmission layers of the PUSCH is greater than 1, each Bit FIELD MAPPED to index may correspond to a resource index of SRS resource of each transmission layer.

Table 1 shows one example of SRI indication for non-codebook based PUSCH transmissions. L _max＝1,N _srs in Table 1 is 2, 3,4, respectively.

TABLE 1

Table 2 shows another example of SRI indication for non-codebook based PUSCH transmissions. L _max＝2,N _srs in Table 2 is 2,3,4, respectively.

TABLE 2

Table 3 shows another example of SRI indication for non-codebook based PUSCH transmissions. L _max＝3,N _srs in Table 3 is 2, 3,4, respectively.

TABLE 3 Table 3

Table 4 shows another example of SRI indication for non-codebook based PUSCH transmissions. L _max＝4,N _srs in Table 4 is 2,3,4, respectively.

TABLE 4 Table 4

As can be seen from the above description, the SRI indicates at least one SRS resource of the uplink wideband, wherein each transmission layer of the uplink data corresponds to at most one SRS resource. The manner in which the SRI is indicated is not yet flexible.

In view of this, an embodiment of the present application provides a method of wireless communication in which at least one SRS resource, e.g., at least one first SRS resource for a wideband and/or at least one second SRS resource for a subband, is indicated by an SRI. Therefore, the embodiment of the application can flexibly indicate the SRI, thereby being beneficial to improving the efficiency of wireless communication.

The technical scheme of the application is described in detail below through specific embodiments.

Fig. 3 is a schematic flow chart of a method 200 of wireless communication according to an embodiment of the application, as shown in fig. 3, the method 200 may include at least some of the following:

s210, the network device sends a first sounding reference signal SRS resource indication SRI to the terminal device, where the first SRI is used to determine at least one first SRS resource. Correspondingly, the terminal equipment receives the SRI of the SRS resource indication.

In an embodiment of the present application, the first SRI may be used to determine at least one first SRS resource for a wideband (e.g., an uplink wideband). In other words, the first SRS resource may include at least one SRS resource of a wideband (e.g., an uplink wideband). In some embodiments, the first SRI may also be referred to as a wideband SRI, as the application is not limited in this regard.

In some embodiments, the terminal device may determine at least one first SRS resource according to the first SRI. Optionally, the terminal device may further determine at least one beam for uplink data transmission according to the at least one first SRS resource, and send uplink data to the network device according to the beam. Illustratively, the uplink data includes PUSCH, which the present application is not limited to.

For example, in the embodiment of the present application, uplink data sent by a terminal device to a network device may correspond to at least one transmission layer, and each transmission layer may correspond to at least one of the first SRS resources.

Illustratively, each of the at least one first SRS resource may include at least one (i.e., one or more) SRS port.

Therefore, the embodiment of the application can flexibly indicate the SRI through the first SRI indicating at least one first SRS resource, such as at least one first SRS resource of an uplink broadband, thereby being beneficial to improving the efficiency of wireless communication.

In some optional embodiments, the network device may send DCI for scheduling PUSCH to the terminal device, where the DCI may include the first SRI. Correspondingly, the terminal device may receive the DCI for PUSCH scheduling sent by the network device, and obtain the first SRI from the DCI.

In some alternative embodiments, the at least one first SRS resource is determined from N _srs SRS resources configured for the terminal device. For example, N _srs is the number of SRS resources in the SRS resource set configured by the network device for the terminal device, and specific reference may be made to the description above. M SRS resource groups can be included in the SRS resource set corresponding to the N _srs SRS resources, each SRS resource group comprises X SRS resources, and M is smaller than or equal to N _srs,N _srs and M, X and is a positive integer respectively.

For example, the network device may configure the N _srs SRS resources for the terminal device, each of which may contain one or more SRS ports. In some embodiments, the N _srs SRS resources may be divided into M SRS resource groups in a predefined manner, each of which may include X SRS resources (or SRS ports). The M groups of SRS resources may not overlap (overlap), or may be part of overlap, which is not limited by the present application.

As an example, N _srs = 8 SRS resources may be divided into 4 SRS groups, respectively {0,1,2,3}, {2,3,4,5}, {4,5,6,7}, {6,7,0,1}.

As another example, N _srs = 8 SRS resources may be divided into 4 SRS groups, respectively {0,1}, {2,3}, {4,5}, {6,7}.

As another example, N _srs = 8 SRS resources may be divided into 4 SRS groups, respectively {0,4}, {1,5}, {2,6}, {3,7}.

As another example, N _srs = 8 SRS resources may be divided into 2 SRS groups, 0,1,2,3, 4,5,6,7, respectively.

As another example, N _srs = 8 SRS resources may be divided into 2 SRS groups, 0,2,4,6, 1,3,5,7, respectively.

Wherein 0 to 7 represent resource indexes of the 8 SRS resources, respectively.

In some optional embodiments, the at least one first SRS resource includes Q SRS resource groups of the M SRS resource groups, where Q is a positive integer less than or equal to M. That is, when the N _srs SRS resources are divided into M SRS resource groups, the first SRI is used to determine that the at least one first SRS resource is an SRS resource of Q SRS resource groups of the M resource groups. Illustratively, Q may be 1,2,3, or other values, without limitation.

Illustratively, at least one of M, X, Q is determined according to the number of transport layers of the uplink data.

In some alternative embodiments, method 200 further comprises step 220: the network device sends a second SRI to the terminal device, the second SRI being used to determine at least one second SRS resource. Correspondingly, the terminal equipment receives the second SRI.

In an embodiment of the present application, the second SRI may be used to determine at least one second SRS resource for a subband (e.g., an uplink subband). In other words, the second SRS resource may include at least one SRS resource of a subband (e.g., an uplink subband). In some embodiments, the second SRI may also be referred to as a subband SRI, as the application is not limited in this respect. The subband may be, for example, a subband occupied by uplink data (e.g., PUSCH).

In some embodiments, the terminal device may determine at least one second SRS resource according to the second SRI. Optionally, the terminal device may further determine at least one beam for uplink data transmission according to the at least one second SRS resource, and send uplink data to the network device according to the beam. Illustratively, the uplink data includes PUSCH, which the present application is not limited to.

For example, in the embodiment of the present application, uplink data sent by a terminal device to a network device may correspond to at least one transmission layer, and each transmission layer may correspond to at least one of the second SRS resources.

Illustratively, each of the at least one second SRS resource may include at least one (i.e., one or more) SRS port.

Therefore, the embodiment of the application indicates at least one second SRS resource through the second SRI, for example, at least one second SRS resource of an uplink sub-band, and can flexibly indicate the SRI and support the pre-coding of the sub-band, thereby being beneficial to improving the pre-coding gain and improving the wireless communication efficiency.

In some optional embodiments, the second SRI may also be included in the DCI for scheduling PUSCH sent by the network device to the terminal device. Correspondingly, the terminal equipment acquires the second SRI from the received DCI for scheduling the PUSCH. Alternatively, when the first SRI and the second SRI described above are included in the DCI, the first SRI and the second SRI may be collectively referred to as an SRI.

In some alternative embodiments, the at least one second SRS resource is determined from the at least one first SRS resource. At this time, the second SRI and the first SRI may be included in the DCI for scheduling PUSCH. For example, after determining at least one first SRS resource according to the first SRI, the terminal device may further determine a second SRS resource among the at least one first SRS resource according to the second SRI.

As an example, when the at least one first SRS resource includes at least one SRS resource of the N _srs SRS resources, the terminal device may determine the at least one SRS resource according to the first SRI, and then determine at least one second SRS resource from the at least one SRS resource further according to the second SRI.

As a specific example, for a rank (rank) of 2 (i.e., k=2), where N _srs =8, the first SRI may indicate that q=4 first SRS resources are determined as the first resource set from the N _srs =8 SRS resource sets, and the second SRI may indicate that k=2 second SRS resources are further determined as the second resource set from the first resource set of the 4 SRS first resources. Exemplary, the first SRI may be viaBits (bits) determine q=4 first SRS resources as a first set of resources, e.g., {0,1,2,3}, the second SRI passOr Qbit, determines k=2 second SRS resources as a second set of resources, e.g., {0,1}.

As another example, when the at least one first SRS resource includes an SRS resource in Q SRS resource groups of the M SRS resource groups, the terminal device may determine the Q SRS resource groups according to the first SRI, and then determine the at least one second SRS resource from the Q SRS resource groups further according to the second SRI.

As a specific example, for k=2, N _srs =8, and the N _srs =8 SRS resources are divided into m=3 groups of SRS resources according to a predefined manner, i.e. m=3 SRS resource groups, for example {0,1,2,3}, {2,3,4,5}, {4,5,6,7}, respectively, each SRS resource group including x=4 SRS resources therein. The first SRI may indicate that q=1 SRS resource groups are determined from m=3 SRS resources as the first resource set, and the second SRI may indicate that k=2 second SRS resources are further determined from the first resource set, i.e. the q=1 SRS resource groups as the second resource set. Exemplary, the first SRI may be viaOr bit map of Mbit determines q=1 SRS resource groups, i.e. a first set of resources, e.g., {0,1,2,3}, the second SRI can be determined byOr the bitmap of the X bits determines k=2 second SRS resources as a second set of resources, e.g., {0,1}.

As another specific example, for k=2, N _srs =8, and the N _srs =8 SRS resources are divided into m=4 groups of SRS resources according to a predefined manner, i.e. m=4 SRS resource groups, for example {0,1}, {2,3}, {4,5}, {6,7}, respectively, each SRS resource group including x=2 SRS resources therein. The first SRI may indicate that q=2 SRS resource groups are determined from m=4 SRS resources as the first resource set, and the second SRI may indicate that k=2 second SRS resources are further determined from the first resource set, i.e. the q=2 SRS resource groups as the second resource set. Exemplary, the first SRI may be viaOr bit map of Mbit determines q=2 SRS resource groups, i.e., a first set of resources, e.g., {0,1} u {2,3}, the second SRI may pass throughOr the bitmap of the QX bit determines k=2 second SRS resources as a second set of resources, e.g., {0,1}. Or the second SRI may pass1 SRS resource, i.e., k=2 second SRS resources, are selected from each SRS group as the second resource set, e.g., {0,2}.

Therefore, the embodiment of the application determines at least one first SRS resource of the uplink broadband through the first SRI, and further determines at least one second SRS resource of the uplink sub-band in the at least one first SRS resource through the second SRI, so that the SRI can be flexibly indicated, and meanwhile, the precoding of the sub-band can be supported, thereby being beneficial to improving the precoding gain and improving the wireless communication efficiency.

In some optional embodiments, the at least one second SRS resource for which the second SRI is determined from the N _srs SRS resources, or the M SRS resource groups. At this time, the second SRI may be included in the DCI for scheduling PUSCH, but the first SRI is not included.

As a specific example, for k=2, n _srs =8 SRS resources, e.g. SRS resource set is {0,1,2,3,4,5,6,7}, the second SRI may pass throughK=2 second SRS resources, e.g., {0,1}, are determined.

Therefore, the embodiment of the application can flexibly indicate the SRI through the second SRI to indicate at least one second SRS resource, such as at least one second SRS resource of an uplink sub-band, thereby being beneficial to improving the efficiency of wireless communication.

In some optional embodiments, the network device may further send transmission rank information (TransmissionRankInformation, TRI) to the terminal device, where the TRI is used to indicate the number of transmission layers of uplink data (e.g., PUSCH). Correspondingly, the terminal device receives the TRI. In some embodiments, the terminal device may determine the number of transmission layers of the uplink data according to the TRI. Illustratively, the TRI may also indicate a rank value, where the rank value is the same as the number of transmission layers of the uplink data.

In some embodiments, the TRI may be included in DCI sent by the network device to the terminal device for scheduling PUSCH. Correspondingly, the terminal device may obtain the TRI according to the DCI. As a possible implementation, in the DCI, the TRI and the SRI (e.g., the first SRI and/or the second SRI described above) may be indicated separately, e.g., both may occupy different information fields. As another possible implementation, in the DCI, the TRI and SRI (e.g., the first SRI and/or the second SRI described above) may be jointly encoded, e.g., may be indicated by an information field.

In some optional embodiments, the number of the at least one second SRS resource is determined according to the number of transmission layers of the uplink data. As a possible implementation manner, the terminal device may determine the number of the at least one second SRS resource according to the TRI. The number of second SRS resources is the same as the number of transmission layers of the uplink data. In addition, the number of transmission layers may be the same as the rank value, that is, the number of second SRS resources, the number of uplink data transmission layers, and the rank value may be the same. As a specific example, when rank=2, the number of transmission layers of the uplink data is 2, and correspondingly, the number of the second SRS resources is also 2.

In some alternative embodiments, the number of bits of the first SRI is determined according to the number of transmission layers of uplink data.

As a possible implementation manner, the terminal device may determine the number Q _v of the at least one first SRS resource according to the TRI, and further may determine the number of bits of the first SRI according to the number Q _v of the second SRS resource. Illustratively, the Q _v first SRS resources may include all SRS resources in the Q SRS resource groups above, in other words, the value of Q _v may be a product of Q and X.

For example, for a group of TRIs, the number Q _v of the same number of first SRS resources may be corresponding. For example, for a first set of rank (such as rank1 and rank 2), Q ₁ first SRS resources are corresponding; for the second set of rank (e.g., rank3 and rank 4), Q ₂ first SRS resources are corresponding, and so on.

According to the embodiment of the application, the number Q _v of the first SRS resources corresponding to the same number of at least one rank in the group of TRIs can be beneficial to reducing the bit number of the TRIs.

For example, the terminal device may determine the division of the SRS resource groups of the N _srs SRS resources according to the TRI, for example, determine one or more of the number M of SRS resource groups, the number Q of SRS resource groups indicated by the first SRI, and the number X of SRS resources in each SRS resource group. In particular, at least one of M, X, Q may be referred to the description above. As a specific example, for the case of N _srs =8, when it is determined that rank is 1 according to TRI, that is, the number of transmission layers of uplink data is 1, m=4, q=1, and x=3; when the rank is determined to be 2 according to the TRI, that is, the number of transmission layers of the uplink data is 2, m=2, q=1, x=4, or M, X, Q may take other values, which is not limited in the present application.

In some alternative embodiments, the number of bits of the first SRI may be a preset value. When the number of bits of the first SRI is a preset value, the number of bits of the first SRI is independent of the TRI, i.e. the number of bits of the first SRI does not need to be determined according to the TRI.

In some alternative embodiments, the number of bits of the second SRI may be determined according to the number of transmission layers of the uplink data. For example, the terminal device may determine the number of bits of the second SRI according to the TRI. That is, when the number of transmission layers of the uplink data is different, the number of bits of the second SRI is different.

As an example, when the first SRI and the second SRI are included in the DCI, when the number of transmission layers indicated by the TRI is 1, that is, the rank is 1, the second SRI corresponding to each subband is 1bit or 2 bits; when the number of transmission layers indicated by TRI is 2, namely, the rank is 2, the second SRI corresponding to each sub-band is 1bit or 2 bits; when the number of transmission layers indicated by TRI is 3, namely, the rank is 3, the second SRI corresponding to each sub-band is 0bit or 1bit; when the number of transmission layers indicated by the TRI is 4, that is, the rank is 4, the second SRI corresponding to each subband is 02 bits.

In some alternative embodiments, the number of bits of the second SRI may be determined according to the number of uplink data transmission layers and/or the number N _srs of SRS resources in the SRS resource set configured for the terminal device by the network device.

As an example, when the second SRI is included in the DCI and the first SRI is not included, the second SRI may pass through when the number of transmission layers indicated by the TRI is k, i.e., the rank is kThe indication, where N _srs is the number of SRS resources in the SRS resource set configured by the network device for the terminal device, may be specifically referred to the description above.

Optionally, the content indicated by the second SRI is determined according to the number of transmission layers of the uplink data. For example, the terminal device may determine, according to the TRI, the content indicated by the second SRI, that is, the at least one second SRS resource used for the determination of the second SRS, and may specifically include a resource index of the at least one second SRS resource, which is not limited by the present application. That is, when the number of transmission layers of the uplink data is different, the number of bits of the second SRI is different, and the SRS resource indicated by the second SRI is also different.

In some embodiments, the second SRI may be used to determine at least one second SRS resource for each of P subbands, where P is a positive integer. By way of example, the P subbands may be all or part of the subbands occupied by uplink data, and are not limited.

In some alternative implementations, the number of bits of the second SRI may be determined according to the number of subbands occupied by uplink data and/or the number of bits of the SRI of the corresponding subband of the different transport layer. Illustratively, the number of bits of the SRI of the sub-band corresponding to the different transmission layers is determined according to the number of transmission layers of the uplink data, i.e., the number of bits of the SRI of the sub-band is related to the number of transmission layers of the uplink data. Illustratively, the SRI of a subband may refer to an SRI used to indicate SRS resources of the subband.

As a possible implementation, when the second SRI is used to determine at least one second SRS resource for each of the P subbands, the number of bits occupied by the second SRI may be a product of P and M _v, where P is the number of subbands occupied by uplink data and M _v is the number of bits of the SRI for the subbands corresponding to different transmission layers. Specifically, M _v may refer to the number of bits of the SRI of each subband corresponding to v, where the SRI of each subband is used to determine at least one second SRS resource of each subband, and v is the number of transmission layers of uplink data indicated by TRI.

For example, M _v may be determined according to the number of transmission layers of uplink data. For example, the terminal device may determine M _v according to TRI. For example, when the number of transmission layers indicated by TRI is different, the number of bits of the SRI (e.g., the SRI for indicating at least one SRS resource of a subband) on each corresponding subband is different.

Or M _v may be determined according to the number of transmission layers of uplink data and SRI of at least one SRS resource for determining an uplink wideband, which is not limited by the present application. For example, when the TRI and the SRI (e.g., the SRI for determining at least one SRS resource of the uplink wideband) are jointly encoded, the number of bits corresponding to the SRI on each subband (e.g., the SRI for indicating at least one SRS resource of the subband) is different when the value indicated by the information field of the joint encoding is different.

The embodiment of the application can help reduce the bit number of the SRI information of the sub-band while ensuring the pre-coding gain of the sub-band through the bit number of the SRI of different sub-bands corresponding to different transmission layers. For example, for some transmission layers corresponding to subbands with smaller precoding gains, a smaller number of bits may be required.

In some alternative embodiments, the network device may also send indication information to the terminal device, where the indication information is used to indicate the number of subbands from the candidate values, e.g. to indicate the value of P. Accordingly, the terminal device may receive the indication information and determine the number of subbands from the candidate values according to the indication information. The candidate value is predefined, or determined according to higher layer signaling, or determined according to the bandwidth portion (Band WIDTH PART, BWP) in which the uplink data is located, for example.

As a possible implementation, the indication information may be sent through high-layer signaling, i.e. the indication information may be carried in the high-layer signaling, which is not limited by the present application. Illustratively, the higher layer signaling may be radio resource control (Radio Resource Control, RRC) signaling, medium access control (Medium Access Control, MAC) layer signaling, etc., without limitation. The higher layer signaling for determining the candidate value may be RRC signaling, MAC layer signaling, or the like, and is not limited thereto.

As an example, the network device may send radio resource control (Radio Resource Control, RRC) signaling to the terminal device, including a number of candidates for the number of subbands, and then indicate the number of subbands currently used from the candidates through MAC layer signaling. For example, when the possible value of the number of subbands is 1-16, 4 or 8 values may be selected from 1-16 as candidate values through the RRC signaling, and then the number of currently used subbands is indicated from 4 or 8 candidate values through the 2-3bit MAC layer signaling, for example, 2 or 3, without limitation.

As an example, for example, in case the candidate value is predefined, the number of currently used subbands may be indicated from the candidate value by RRC signaling.

As an example, in the case where the candidate value is determined according to the BWP where the uplink data is located, the number of currently used subbands may be indicated from the candidate value through RRC signaling.

For example, if the bandwidths of the BWP where the uplink data is located are different, the candidate values of the number of subbands are different. For example, when the bandwidth of the BWP where the PUSCH is located is 5M, the candidate value of the number of subbands is {1,2,3,4,5,6,7,8}; when the bandwidth of the BWP where the PUSCH is located is 20M, the candidate value of the number of subbands is {2,4,6,8,10,12,14,16}. Thus, when the uplink data corresponds to different BWP, the number of subbands indicated by the same RRC signaling is different.

In some alternative embodiments, when the second SRI is carried in the DCI for scheduling PUSCH, the number of bits reserved for the second SRI in the DCI is determined according to the number of subbands (e.g., the maximum number) and/or the number of bits (e.g., the maximum number of bits) of the SRI of the corresponding subband of different number of transmission layers.

Illustratively, the number of bits reserved for the second SRI may be expressed as the product of P _m and Max (M _v). Wherein P _m is the number of subbands indicated by the higher layer signaling, or the maximum number of subbands allowed under the broadband of the BWP where the uplink data is located, and Max (M _v) represents the maximum number of bits of SRI of each subband corresponding to different TRIs. For example, P _m may be the maximum number of subbands that the network device can schedule on the bandwidth of BWP where uplink data is located, max (M _v)＝max{M ₁,M ₂,M ₃,M ₄ }, where when the number of transmission layers indicated by TRI is 1-4, the number of bits of SRI of each corresponding subband is { M ₁,M ₂,M ₃,M ₄ }, respectively.

In some embodiments, in the DCI for scheduling PUSCH, the position of SRS resources that are not used for the indication subband in the number of bits reserved for the second SRI may be set to zero. For example, assuming that for the current TRI, the number of bits occupied by SRIs of all subbands is ase:Sub>A and the number of bits reserved in the DCI is B, the first ase:Sub>A bits of the B bits correspond to SRIs of the subbands, and the last (B-ase:Sub>A) bits may be set to zero, where B is greater than or equal to ase:Sub>A and A, B is ase:Sub>A positive integer.

In other embodiments, in the DCI for scheduling PUSCH, the position of the SRS resource that is not used to indicate the subband in the number of bits reserved for the second SRI may be used for other purposes, for example, may be used to indicate other information, which is not limited by the present application.

Therefore, according to the embodiment of the application, the number of bits reserved for the second SRI in the DCI is determined according to the number of sub-bands (such as the maximum number) and/or the number of bits (such as the maximum number of bits) of the SRI of the sub-band corresponding to different transmission layers, so that the terminal can pre-determine the size of the DCI before detecting the DCI, and the difference of the DCI lengths caused by the difference of the information lengths of the second SRI can be avoided, thereby being beneficial to reducing the complexity of blind PDCCH detection of the terminal equipment and improving the reliability of PDCCH detection.

In some alternative embodiments, the sub-band occupied by the upstream data may include a first portion of the sub-band. The second SRI indicates at least one SRS resource for the first portion of subbands (i.e., the second SRI indicates at least one second SRS resource for each of the partial subbands in the subband), if at least one of the following conditions is satisfied:

The number of bits of the second SRI satisfies a first condition;

The code rate of the downlink channel carrying the DCI of the second SRI satisfies a second condition.

Illustratively, the first condition may refer to: the number of bits of the second SRI exceeds a first threshold, and/or the ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds a second threshold, and/or the ratio of the number of bits of the second SRI to the total number of bits of other information in the DCI carrying the second SRI than the second SRI exceeds a third threshold.

Illustratively, the second condition may refer to: the code rate of a channel (such as PDCCH) carrying DCI of the second SRI is greater than or equal to a fourth threshold.

For example, the above-described judgment conditions may be used independently or in combination. For example, if the code rate of the PDCCH carrying the DCI of the second SRI exceeds a fourth threshold, or the number of bits of the second SRI exceeds a first threshold, the second SRI indicates at least one second SRS resource for each of the partial subbands. For another example, if the number of bits of the second SRI is superconducting to the first threshold and the ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds the second threshold, the second SRI indicates at least one second SRS resource for each of the partial subbands.

In some embodiments, the at least one threshold value may be configured by the network device, or predefined by the network device and the terminal device.

In some embodiments, at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold is determined according to a format of DCI carrying the second SRI. That is, for DCI carrying the second SRI, the set threshold value may be different for different DCI formats. For example, the threshold value corresponding to DCI format 1_2 may be lower than the threshold value corresponding to DCI format 1_1, so as to ensure performance of Ultra-high reliability low-delay communication related services (Ultra-Reliable Low Latency Communications, URLLC).

In some alternative embodiments, the first portion of subbands may include at least one of an even subband, an odd subband, a first half of subbands, a second half of subbands, and a high priority subband among subbands occupied by uplink data.

The number n of the first partial subbands may be, for example, a maximum number of subbands that the first condition and/or the second condition cannot meet, for example, a maximum number of subbands that the code rate of the PUCCH carrying the second SRI does not exceed the fourth threshold, or a maximum number of subbands that the bit number of the second SRI does not exceed the first threshold, which is not limited by the present application.

For example, when the second SRI indicates at least one SRS resource of an even sub-band and does not indicate at least one SRS resource of an odd sub-band, the SRI corresponding to the odd sub-band for indicating the SRS resource is discarded.

For example, when the second SRI indicates at least one SRS resource of an odd subband and does not indicate at least one SRS resource of an even subband, the SRI corresponding to the even subband for indicating the SRS resource is discarded.

For example, when the second SRI indicates at least one SRS resource of the n subbands with higher priority, SRS information corresponding to other subbands with lower priority in the subbands is discarded. As an example, the priority of the even subbands may be higher Yu Jishu subbands, or the priority of the odd subbands may be higher Yu Oushu subbands. As another example, in even subbands or in odd subbands, subbands with smaller subband index values may have a higher priority than subbands with larger subband index values, as the application is not limited in this regard.

According to the embodiment of the application, the SRI used for indicating the SRS resource of a part of the sub-band is discarded, so that the bit number of the second SRI can be reduced, and further, the bit number of DCI carrying the second SRI can be reduced, thereby improving the transmission performance of the PDCCH.

In some optional embodiments, the sub-band occupied by the uplink data may further include a second portion sub-band, where at least one SRS resource of the second portion sub-band is the same as at least one SRS resource of the first portion sub-band, and the first portion sub-band and the second portion sub-band are different sub-bands.

For example, the terminal device may assume that, of the subbands occupied by uplink data, a subband (one example of the second portion subband) that does not indicate at least one SRS resource of the subband is the same as an SRS resource on a subband (one example of the first portion subband) that is closest to the subband and indicates the SRS resource.

For example, when the first partial subband is an even subband, e.g., a subband having a subband index of 0,2,4, …, etc., the terminal device may assume that the SRS resource of each of the second partial subbands, i.e., the subbands having a subband index of 1,3,5, …, etc., is the SRS resource of the previous subband, or the SRS resource of the next subband, of the subband. As a specific example, if a subband with a subband index of 1 (i.e., subband 1) is not indicated for SRS resources, the terminal device assumes that the SRS resources for this subband 1 are the same as the SRS resources with a subband index of 0 (i.e., subband 0), or with a subband index of 1 (i.e., subband 1).

For example, when the first partial subband is an odd subband, e.g., a subband having a subband index of 1,3,5, …, etc., the terminal device may assume that the SRS resource of each of the second partial subbands, i.e., the subbands having a subband index of 0,2,4, …, etc., is the SRS resource of the previous subband, or the SRS resource of the next subband, of the subband. As a specific example, if the subband with the subband index of 2 (i.e., subband 2) is not indicated with SRS resources, the terminal device assumes that the SRS resources of this subband 2 are identical to the SRS resources with the subband index of 1 (i.e., subband 1) or with the subband index of 3 (i.e., subband 3).

Therefore, the embodiment of the application can obtain the SRS resource of each sub-band occupied by the uplink data on the premise of ensuring the precoding gain by determining that at least one SRS resource of the second sub-band is the same as at least one SRS resource of the first sub-band.

The method embodiment of the present application is described in detail above with reference to fig. 3, and the apparatus embodiment of the present application is described in detail below with reference to fig. 4 to 8, it being understood that the apparatus embodiment corresponds to the method embodiment, and similar descriptions can refer to the method embodiment.

Fig. 4 shows a schematic block diagram of a terminal device 300 according to an embodiment of the application. As shown in fig. 4, the terminal device 300 includes:

A communication unit 310, configured to receive a first sounding reference signal SRS resource indication SRI, where the first SRI is used to determine at least one first SRS resource.

Optionally, the terminal device 300 may further include a processing unit 320, configured to process the first SRI, for example, determine the at least one first SRS resource according to the first SRI.

Optionally, the at least one first SRS resource is determined from N _srs SRS resources configured for the terminal device, where the N _srs SRS resources include M SRS resource groups, each SRS resource group includes X SRS resources, and M is less than or equal to N _srs,N _srs and M, X is a positive integer respectively.

Optionally, the at least one first SRS resource includes Q SRS resource groups of the M SRS resource groups, Q is a positive integer less than or equal to M.

Optionally, at least one of M, X is determined according to the number of transmission layers of the uplink data.

Optionally, Q is determined according to the number of transmission layers of the uplink data.

Optionally, the communication unit 310 is further configured to:

a second SRI is received, the second SRI being used to determine at least one second SRS resource.

Optionally, the at least one second SRS resource includes an SRS resource of a subband.

Optionally, the processing unit 320 is further configured to process the second SRI, for example, determine the at least one second SRS resource according to the second SRI.

Optionally, the at least one second SRS resource is determined from the at least one first SRS resource.

Optionally, the number of the at least one second SRS resource is determined according to the number of transmission layers of the uplink data.

Optionally, the number of bits of the second SRI is determined according to at least one of the number of transmission layers of uplink data, the number N _srs of SRS resources configured for the terminal device, the number of subbands, and the number of bits of the SRI of the subband corresponding to different transmission layers.

Optionally, the communication unit 310 is further configured to:

And receiving indication information, wherein the indication information is used for indicating the number of the sub-bands from candidate values, and the candidate values are predefined, are determined according to high-layer signaling or are determined according to a bandwidth part BWP where uplink data are located.

Optionally, the processing unit 320 is further configured to determine, according to the indication information, the number of subbands from candidate values.

Optionally, the second SRI is carried in downlink control information DCI, where the number of bits reserved in the DCI for the second SRI is determined according to the number of subbands and/or the number of bits of the SRI of the subband corresponding to different transmission layers.

Optionally, the sub-band comprises a first portion sub-band;

The second SRI indicates at least one SRS resource in the first partial subband if at least one of the following conditions is met:

The number of bits of the second SRI exceeds a first threshold;

The ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds a second threshold;

The ratio of the number of bits of the second SRI to the total number of bits of other information in the DCI carrying the second SRI except the second SRI exceeds a third threshold;

And the code rate of a downlink channel carrying the DCI of the second SRI exceeds a fourth threshold.

Optionally, at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold is determined according to a format of DCI carrying the second SRI.

Optionally, the first part of subbands includes at least one of an even subband, an odd subband, a first half of subbands, a second half of subbands, and a high priority subband among the subbands.

Optionally, the subband further includes a second portion subband, wherein at least one SRS resource of the second portion subband is the same as at least one SRS resource of the first portion subband, and wherein the first portion subband and the second portion subband are different subbands.

Optionally, the number of bits of the first SRI is determined according to the number of transmission layers of uplink data, or is a preset value.

Optionally, the communication unit 310 is further configured to receive transmission rank information TRI, where the TRI is used to indicate a transmission layer number of uplink data.

Optionally, the processing unit 320 is further configured to determine the number of transmission layers of the uplink data according to the TRI.

In some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 3, and are not described herein for brevity.

Fig. 5 shows a schematic block diagram of a network device 400 according to an embodiment of the application. As shown in fig. 5, the network device 400 includes:

And a communication unit, configured to send a first sounding reference signal SRS resource indication SRI, where the first SRI is used to determine at least one first SRS resource.

Optionally, the network device 400 may further comprise a processing unit 420 for determining said first SRI.

Optionally, the communication unit 410 is further configured to send a second SRI, where the second SRI is used to determine at least one second SRS resource.

Optionally, the processing unit 420 is further configured to determine the second SRI.

Optionally, the communication unit 410 is further configured to send indication information, where the indication information is used to indicate the number of subbands from candidate values, where the candidate values are predefined, are determined according to higher layer signaling, or are determined according to a bandwidth portion BWP where uplink data is located.

Optionally, the processing unit 420 is further configured to determine the indication information.

Optionally, the sub-band comprises a first portion sub-band;

The number of bits of the second SRI exceeds a first threshold;

Optionally, the communication unit 410 is further configured to send transmission rank information TRI, where the TRI is used to indicate a transmission layer number of uplink data.

Optionally, the processing unit 420 is further configured to determine the TRI.

It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 400 are respectively for implementing the corresponding flow of the network device in the method 200 shown in fig. 3, which is not described herein for brevity.

Fig. 6 is a schematic block diagram of a communication device 500 according to an embodiment of the present application. The communication device 500 shown in fig. 6 comprises a processor 510, from which the processor 510 may call and run a computer program to implement the method in an embodiment of the application.

In some embodiments, as shown in fig. 6, the communication device 500 may also include a memory 520. Wherein the processor 510 may call and run a computer program from the memory 520 to implement the method in an embodiment of the application.

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

In some embodiments, as shown in fig. 6, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, and in particular, may transmit information or data to other devices, or receive information or data transmitted by other devices.

Wherein the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, the number of which may be one or more.

In some embodiments, the communication device 500 may be a network device in the embodiments of the present application, and the communication device 500 may implement corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the communication device 500 may be specifically a terminal device according to an embodiment of the present application, and the communication device 500 may implement a corresponding flow implemented by the terminal device in each method according to an embodiment of the present application, which is not described herein for brevity.

Fig. 7 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 600 shown in fig. 7 includes a processor 610, and the processor 610 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

In some embodiments, as shown in fig. 7, the apparatus 600 may further include a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the method in an embodiment of the application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

In some embodiments, the apparatus 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and in particular, may acquire information or data sent by the other devices or chips.

In some embodiments, the apparatus 600 may further comprise an output interface 640. Wherein the processor 610 may control the output interface 640 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

In some embodiments, the apparatus may be applied to a network device in the embodiments of the present application, and the apparatus may implement corresponding flows implemented by the network device in each method in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the apparatus may be applied to a terminal device in the embodiments of the present application, and the apparatus may implement corresponding flows implemented by the terminal device in each method in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the device according to the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 8 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in fig. 8, the communication system 700 includes a terminal device 710 and a network device 720.

The terminal device 710 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The Processor may be a general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), an Application SPECIFIC INTEGRATED Circuit (ASIC), an off-the-shelf programmable gate array (Field Programmable GATE ARRAY, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDR SDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and Direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be appreciated that the above memory is exemplary and not limiting, and for example, the memory in the embodiments of the present application may be static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous connection dynamic random access memory (SYNCH LINK DRAM, SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

In some embodiments, the computer readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the computer readable storage medium may be applied to the terminal device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

In some embodiments, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the computer program product may be applied to a terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

In some embodiments, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the computer program may be applied to a terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the terminal device in each method in the embodiments of the present application, which are not described herein for brevity.

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.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

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 of wireless communication, comprising:

The terminal equipment receives a first sounding reference signal SRS resource indication SRI, wherein the first SRI is used for determining at least one first SRS resource.
The method of claim 1, wherein the at least one first SRS resource is determined from N _srs SRS resources configured for the terminal device, wherein the N _srs SRS resources comprise M SRS resource groups, each SRS resource group comprising X SRS resources, M being less than or equal to N _srs,N _srs, M, X, respectively, being a positive integer.
The method of claim 2, wherein the at least one first SRS resource comprises Q SRS resource groups of the M SRS resource groups, Q being a positive integer less than or equal to M.
The method of claim 2, wherein at least one of M, X is determined based on a number of transmission layers of uplink data.
A method according to claim 3, wherein Q is determined based on the number of uplink data transmission layers.
The method of any one of claims 1-5, further comprising:

the terminal device receives a second SRI, where the second SRI is used to determine at least one second SRS resource.
The method of claim 6, wherein the at least one second SRS resource is determined from the at least one first SRS resource.
The method according to claim 6 or 7, characterized in that the number of the at least one second SRS resource is determined according to the number of transmission layers of uplink data.
The method according to any of claims 6-8, wherein the at least one second SRS resource comprises an SRS resource of a subband, and the number of bits of the second SRI is determined according to at least one of a number of transmission layers of uplink data, a number N _srs of SRS resources configured for the terminal device, a number of subbands, and a number of bits of an SRI of a subband corresponding to a different number of transmission layers.
The method as recited in claim 9, further comprising:

The terminal device receives indication information, where the indication information is used to indicate the number of the subbands from candidate values, where the candidate values are predefined, are determined according to higher layer signaling, or are determined according to a bandwidth portion BWP where uplink data is located.
The method according to claim 9 or 10, wherein the second SRI is carried in downlink control information DCI, wherein the number of bits reserved for the second SRI in the DCI is determined according to the number of subbands and/or the number of bits of the SRI of the corresponding subband of different number of transmission layers.
The method according to any of claims 6-11, wherein the at least one second SRS resource comprises an SRS resource of a subband; the sub-bands include a first portion of sub-band;

The second SRI indicates at least one SRS resource in the first partial subband if at least one of the following conditions is met:

The number of bits of the second SRI exceeds a first threshold;

The ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds a second threshold;

The ratio of the number of bits of the second SRI to the total number of bits of other information in the DCI carrying the second SRI except the second SRI exceeds a third threshold;

And the code rate of a downlink channel carrying the DCI of the second SRI exceeds a fourth threshold.
The method of claim 12, wherein at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold is determined based on a format of DCI carrying the second SRI.
The method of claim 12 or 13, wherein the first portion of subbands comprises at least one of an even subband, an odd subband, a first half of subbands, a second half of subbands, and a high priority subband of the subbands.
The method of any of claims 12-14, wherein the subband further comprises a second partial subband, wherein at least one SRS resource of the second partial subband is the same as at least one SRS resource of the first partial subband, wherein the first partial subband is a different subband than the second partial subband.
The method according to any of claims 1-15, wherein the number of bits of the first SRI is determined according to the number of transmission layers of uplink data or is a preset value.
The method of any one of claims 1-16, further comprising:

the terminal equipment receives transmission rank information TRI, wherein the TRI is used for indicating the number of transmission layers of uplink data.
A method of wireless communication, comprising:

The network device transmits a first sounding reference signal, SRS, resource indication, SRI, the first SRI being used to determine at least one first SRS resource.
The method of claim 18, wherein the at least one first SRS resource is determined from N _srs SRS resources configured for the terminal device, wherein the N _srs SRS resources comprise M SRS resource groups, each SRS resource group comprising X SRS resources, M being less than or equal to N _srs,N _srs, M, X, respectively, being a positive integer.
The method of claim 19, wherein the at least one first SRS resource comprises Q SRS resource groups of the M SRS resource groups, Q being a positive integer less than or equal to M.
The method of claim 19, wherein at least one of M, X is determined based on a number of transmission layers of uplink data.
The method of claim 20, wherein Q is determined based on a number of transmission layers of uplink data.
The method according to any one of claims 18-22, further comprising:

the network device transmits a second SRI, the second SRI being used to determine at least one second SRS resource.
The method of claim 23, wherein the at least one second SRS resource is determined from the at least one first SRS resource.
The method according to claim 23 or 24, wherein the number of the at least one second SRS resource is determined according to the number of transmission layers of uplink data.
The method according to any of claims 23-25, wherein the at least one second SRS resource comprises an SRS resource of a subband, and the number of bits of the second SRI is determined according to at least one of a number of transmission layers of uplink data, a number N _srs of SRS resources configured for the terminal device, a number of subbands, and a number of bits of an SRI of a subband corresponding to a different number of transmission layers.
The method as recited in claim 26, further comprising:

The network device sends indication information, where the indication information is used to indicate the number of the subbands from candidate values, where the candidate values are predefined, or determined according to higher layer signaling, or determined according to a bandwidth portion BWP where uplink data is located.
The method according to claim 26 or 27, wherein the second SRI is carried in downlink control information, DCI, and wherein the number of bits reserved for the second SRI in the DCI is determined according to the number of subbands and/or the number of bits of the SRI of the corresponding subband of different number of transmission layers.
The method of any of claims 23-28, wherein the at least one second SRS resource comprises an SRS resource for a subband; the sub-bands include a first portion of sub-band;

The second SRI indicates at least one SRS resource in the first partial subband if at least one of the following conditions is met:

The number of bits of the second SRI exceeds a first threshold;

The ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds a second threshold;

The ratio of the number of bits of the second SRI to the total number of bits of other information in the DCI carrying the second SRI except the second SRI exceeds a third threshold;

And the code rate of a downlink channel carrying the DCI of the second SRI exceeds a fourth threshold.
The method of claim 29, wherein at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold is determined based on a format of DCI carrying the second SRI.
The method of claim 29 or 30, wherein the first portion of subbands comprises at least one of an even subband, an odd subband, a first half of subbands, a second half of subbands, and a high priority subband of the subbands.
The method of any of claims 29-31, wherein the subband further comprises a second partial subband, wherein at least one SRS resource of the second partial subband is the same as at least one SRS resource of the first partial subband, wherein the first partial subband is a different subband than the second partial subband.
The method according to any of claims 18-32, wherein the number of bits of the first SRI is determined according to the number of transmission layers of uplink data or is a preset value.
The method of any one of claims 18-33, further comprising:

the network device sends transmission rank information TRI, wherein the TRI is used for indicating the number of transmission layers of uplink data.
A terminal device, comprising:

A communication unit, configured to receive a first sounding reference signal, SRS, resource indicator, SRI, where the first SRI is used to determine at least one first SRS resource.
The terminal device of claim 35, wherein the at least one first SRS resource is determined from N _srs SRS resources configured for the terminal device, wherein the N _srs SRS resources comprise M SRS resource groups, each SRS resource group comprising X SRS resources, M being less than or equal to N _srs,N _srs, M, X, respectively, being a positive integer.
The terminal device of claim 36, wherein the at least one first SRS resource comprises Q SRS resource groups of the M SRS resource groups, Q being a positive integer less than or equal to M.
The terminal device of claim 36, wherein at least one of M, X is determined based on a number of transmission layers of uplink data.
The terminal device of claim 37, wherein Q is determined based on a number of transmission layers of uplink data.
The terminal device according to any of the claims 35-39, wherein the communication unit is further adapted to:

a second SRI is received, the second SRI being used to determine at least one second SRS resource.
The terminal device of claim 40, wherein the at least one second SRS resource is determined from the at least one first SRS resource.
The terminal device of claim 40 or 41, wherein the number of the at least one second SRS resource is determined according to a number of transmission layers of uplink data.
The terminal device of any of claims 40-42, wherein the at least one second SRS resource comprises an SRS resource of a subband; the number of bits of the second SRI is determined according to at least one of the number of transmission layers of uplink data, the number N _srs of SRS resources configured for the terminal device, the number of subbands, and the number of bits of the SRI of the subband corresponding to different transmission layers.
The terminal device of claim 43, wherein the communication unit is further configured to:

And receiving indication information, wherein the indication information is used for indicating the number of the sub-bands from candidate values, and the candidate values are predefined, are determined according to high-layer signaling or are determined according to a bandwidth part BWP where uplink data are located.
The terminal device according to claim 43 or 44, wherein the second SRI is carried in downlink control information DCI, and wherein the number of bits reserved for the second SRI in the DCI is determined according to the number of subbands and/or the number of bits of the SRI of the corresponding subband of different transmission layers.
The terminal device of any of claims 40-45, wherein the at least one second SRS resource comprises an SRS resource of a subband; the sub-bands include a first portion of sub-band;

The second SRI indicates at least one SRS resource in the first partial subband if at least one of the following conditions is met:

The number of bits of the second SRI exceeds a first threshold;

The ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds a second threshold;

The ratio of the number of bits of the second SRI to the total number of bits of other information in the DCI carrying the second SRI except the second SRI exceeds a third threshold;

And the code rate of a downlink channel carrying the DCI of the second SRI exceeds a fourth threshold.
The terminal device of claim 46, wherein at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold is determined according to a format of DCI carrying the second SRI.
The terminal device of claim 46 or 47, wherein the first portion of subbands includes at least one of an even subband, an odd subband, a first half of subbands, a second half of subbands, and a high priority subband of the subbands.
The terminal device of any of claims 46-48, wherein the sub-band further comprises a second portion sub-band, wherein at least one SRS resource of the second portion sub-band is the same as at least one SRS resource of the first portion sub-band, wherein the first portion sub-band and the second portion sub-band are different sub-bands.
The terminal device according to any of claims 35-49, wherein the number of bits of the first SRI is determined according to the number of transmission layers of uplink data or is a preset value.
The terminal device according to any of the claims 15-50, wherein the communication unit is further adapted to:

And receiving transmission rank information TRI, wherein the TRI is used for indicating the transmission layer number of uplink data.
A network device, comprising:

a communication unit configured to send a first sounding reference signal, SRS, resource indicator, SRI, the first SRI being configured to determine at least one first SRS resource
The network device of claim 52, wherein the at least one first SRS resource is determined from N _srs SRS resources configured for the terminal device, wherein the N _srs SRS resources comprise M SRS resource groups, each SRS resource group comprising X SRS resources, M being less than or equal to N _srs,N _srs, M, X, respectively, being a positive integer.
The network device of claim 53, wherein the at least one first SRS resource comprises Q SRS resource groups of the M SRS resource groups, Q being a positive integer less than or equal to M.
The network device of claim 53, wherein at least one of M, X is determined based on a number of transport layers of uplink data.
The network device of claim 54, wherein Q is determined based on a number of layers of transmission of uplink data.
The network device of any one of claims 52-56, wherein the communication unit is further configured to:

And transmitting a second SRI, wherein the second SRI is used for determining at least one second SRS resource.
The network device of claim 57, wherein the at least one second SRS resource is determined from the at least one first SRS resource.
The network device of claim 57 or 58, wherein the number of at least one second SRS resource is determined according to a number of transmission layers of uplink data.
The network device of any of claims 57-59, wherein the at least one second SRS resource comprises an SRS resource for a subband; the number of bits of the second SRI is determined according to at least one of the number of transmission layers of uplink data, the number N _srs of SRS resources configured for the terminal device, the number of subbands, and the number of bits of the SRI of the subband corresponding to different transmission layers.
The network device of claim 60, wherein the communication unit is further configured to:

And sending indication information, wherein the indication information is used for indicating the number of the sub-bands from candidate values, and the candidate values are predefined, are determined according to high-layer signaling or are determined according to a bandwidth part BWP where uplink data are located.
The network device of claim 60 or 61, wherein the second SRI is carried in downlink control information DCI, and wherein the number of bits reserved for the second SRI in the DCI is determined according to the number of subbands and/or the number of bits of the SRI of the corresponding subband of different transmission layers.
The network device of any of claims 57-62, wherein the at least one second SRS resource comprises an SRS resource for a subband; the sub-bands include a first portion of sub-band;

The second SRI indicates at least one SRS resource in the first partial subband if at least one of the following conditions is met:

The number of bits of the second SRI exceeds a first threshold;

The ratio of the number of bits of the second SRI to the total number of bits of the DCI carrying the second SRI exceeds a second threshold;

The ratio of the number of bits of the second SRI to the total number of bits of other information in the DCI carrying the second SRI except the second SRI exceeds a third threshold;

And the code rate of a downlink channel carrying the DCI of the second SRI exceeds a fourth threshold.
The network device of claim 63, wherein at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold is determined based on a format of DCI carrying the second SRI.
The network device of claim 63 or 64, wherein the first portion of subbands comprises at least one of an even subband, an odd subband, a first half of subbands, a second half of subbands, and a high priority subband of the subbands.
The network device of any of claims 63-65, wherein the sub-band further comprises a second portion sub-band, wherein at least one SRS resource of the second portion sub-band is the same as at least one SRS resource of the first portion sub-band, wherein the first portion sub-band is a different sub-band than the second portion sub-band.
The network device of any of claims 52-66, wherein the number of bits of the first SRI is determined according to the number of transmission layers of uplink data or is a preset value.
The network device of any one of claims 52-67, wherein the communication unit is further configured to:

And transmitting transmission rank information TRI, wherein the TRI is used for indicating the transmission layer number of the uplink data.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 17.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 18 to 34.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 17.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 18 to 34.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 17.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 18 to 34.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 17.
A computer program product comprising computer program instructions which cause a computer to perform the method of any of claims 18 to 34.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 17.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 18 to 34.