Resource configuration method and apparatus, device, and storage medium

Abstract

A resource configuration method and apparatus, a device, and a storage medium, relating to the technical field of communications. The method comprises: a network device sends configuration information to a terminal device, the configuration information being used for configuring M resource sets related to a first antenna switching scheme, and each of the M resource sets comprising one or more uplink reference signal resources, wherein the number of receiving antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of receiving antennas supported by the terminal device, and M is a positive integer. The method reduces the number of receiving antennas configured for uplink reference signal resources, thereby reducing the resource overhead and delay of transmitting uplink reference signals between terminal devices and network devices.

Description

Resource configuration method, apparatus, device, and storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of communication, and particularly relate to a resource configuration method, apparatus, device, and storage medium. BACKGROUND

[0002] In actual application of a large-scale antenna array communication system, in order to support a terminal device with a number of sending antennas less than a number of receiving antennas to obtain downlink channel state information through channel reciprocity, a reference signal is usually transmitted in an antenna switching manner to obtain full downlink channel state information corresponding to all receiving antennas.

[0003] However, this manner causes a reference signal overhead problem.

[0004] SUMMARY

[0005] Embodiments of the present application provide a resource configuration method, apparatus, device, and storage medium. The technical solutions provided by embodiments of the present application are as follows.

[0006] According to an aspect of embodiments of the present application, a resource configuration method is provided, the method being performed by a terminal device, and the method comprising:

[0007] receiving configuration information, the configuration information being used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets comprising one or more uplink reference signal resources, wherein a number of receiving antennas of the terminal device corresponding to the first antenna switching scheme is less than a number of receiving antennas supported by the terminal device, and M is a positive integer.

[0008] According to an aspect of embodiments of the present application, a resource configuration method is provided, the method being performed by a network device, and the method comprising:

[0009] sending, to a terminal device, configuration information, the configuration information being used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets comprising one or more uplink reference signal resources, wherein a number of receiving antennas of the terminal device corresponding to the first antenna switching scheme is less than a number of receiving antennas supported by the terminal device, and M is a positive integer.

[0010] According to an aspect of embodiments of the present application, a resource configuration apparatus is provided, the apparatus comprising:

[0011] The receiving module is configured to receive configuration information, wherein the configuration information is used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets comprises one or more uplink reference signal resources, the number of receiving antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of receiving antennas supported by the terminal device, and M is a positive integer.

[0012] According to an aspect of some embodiments of the present application, a resource configuration apparatus is provided, and the apparatus comprises:

[0013] The sending module is configured to send configuration information to a terminal device, wherein the configuration information is used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets comprises one or more uplink reference signal resources, the number of receiving antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of receiving antennas supported by the terminal device, and M is a positive integer.

[0014] According to an aspect of some embodiments of the present application, a communication device is provided, and the communication device comprises a processor and a memory, the memory stores a computer program, and the processor executes the computer program to implement the above-mentioned resource configuration method.

[0015] According to an aspect of some embodiments of the present application, a computer readable storage medium is provided, and the storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the above-mentioned resource configuration method.

[0016] According to an aspect of some embodiments of the present application, a chip is provided, and the chip comprises a programmable logic circuit and / or program instructions, and when the chip is running, the chip is used to implement the above-mentioned resource configuration method.

[0017] According to an aspect of some embodiments of the present application, a computer program product is provided, and the computer program product comprises computer instructions, the computer instructions are stored in a computer readable storage medium, a processor reads and executes the computer instructions from the computer readable storage medium, and the computer instructions are used to implement the above-mentioned resource configuration method.

[0018] The technical scheme provided by the embodiments of the present application can have the following beneficial effects:

[0019] The number of receiving antennas for configuring uplink reference signal resources is reduced, and the resource overhead and time delay of transmitting uplink reference signals between the terminal device and the network device are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 is a schematic diagram of a scheme implementation environment according to an embodiment of the present application;

[0021] FIG. 2 is a schematic diagram of 2T4R antenna switching according to an embodiment of the present application;

[0022] FIG. 3 is a schematic diagram of a neural network structure according to an embodiment of the present application;

[0023] FIG. 4 is a flowchart of a resource configuration method according to an embodiment of the present application;

[0024] FIG. 5 is a schematic diagram of a 1T16 SRS resource set and antenna port group and SRS resource and antenna port correspondence according to an embodiment of the present application;

[0025] FIG. 6 is a flowchart of a resource configuration method according to another embodiment of the present application;

[0026] FIG. 7 is a schematic diagram of an antenna port group and antenna port activation according to an embodiment of the present application;

[0027] FIG. 8 is a block diagram of a resource configuration apparatus according to an embodiment of the present application;

[0028] FIG. 9 is a block diagram of a resource configuration apparatus according to another embodiment of the present application;

[0029] FIG. 10 is a block diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0031] The network architecture and service scenarios described in the embodiments of the present application are to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0032] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), and 5G (5G) communication. th -Generation, 5G) system, B5G (Beyond 5G) system, sixth-generation communication (6 th -Generation, 6G) systems or other communication systems, etc.

[0033] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0034] The communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) network deployment scenario.

[0035] The communication system in the embodiments of the present application can be applied to an unlicensed spectrum, which can also be regarded as a shared spectrum, or can also be applied to a licensed spectrum, which can also be regarded as a non-shared spectrum.

[0036] The embodiments of the present application can be applied to a non-terrestrial network (NTN) system, and can also be applied to a terrestrial network (TN) system. The NTN generally adopts a satellite communication mode to provide communication services to ground users. The NTN system currently includes an NR-NTN and an IoT-NTN system, and can also include other NTN systems in the future.

[0037] Please refer to FIG. 1, which shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application. The network architecture 100 can include a terminal device 10, an access network device 20, and a core network element 30.

[0038] The terminal device 10 can refer to a UE (User Equipment), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 can also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a 5GS (5 thTerminal devices in a Generation System (5G mobile communication system) or in a future evolved PLMN (Public Land Mobile Network), etc., are not limited to this embodiment. For ease of description, the devices mentioned above are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed within the cell managed by each access network device 20. Terminal devices can also be simply referred to as terminals or UEs, the meaning of which will be understood by those skilled in the art.

[0039] Access network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal device 10. Access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the name of the device with access network device functionality may differ; for example, in a 5G NR system, it is called gNodeB or gNB. As communication technologies evolve, the name "access network device" may change. For ease of description, in this embodiment, the aforementioned devices providing wireless communication functionality to terminal device 10 are collectively referred to as access network devices. In some embodiments, a communication relationship can be established between terminal device 10 and core network element 30 through access network device 20. For example, in an LTE (Long Term Evolution) system, access network device 20 may be one or more eNodeBs in an EUTRAN (Evolved Universal Terrestrial Radio Access Network) or EUTRAN; in a 5G NR system, access network device 20 may be one or more gNBs in a RAN (Radio Access Network). In the embodiments of this application, unless otherwise specified, the term "network device" refers to access network device 20, such as a base station.

[0040] Core network element 30 is a network element deployed in the core network. Its main functions are to provide user connectivity, manage users, and bear services, serving as an interface to external networks. For example, core network elements in a 5G NR system may include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function) entities, and SMF (Session Management Function) entities.

[0041] In some embodiments, the access network device 20 and the core network element 30 communicate with each other through an air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other through an air interface technology, such as the Uu interface.

[0042] The "5G NR system" in the embodiments of the present application can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applicable to the LTE system, and can also be applicable to the 5G NR system, and can also be applicable to the subsequent evolution system of the 5G NR system (for example, the B5G (Beyond 5G, Super Five Generation Mobile Communication Technology) system, the 6G system (6 th Generation System, Sixth Generation Mobile Communication System)), and can also be applicable to other communication systems such as the NB-IoT (Narrow Band Internet of Things, Narrow Band Internet of Things) system, and the like, which are not limited in the present application.

[0043] In the embodiments of the present application, the network device can serve a cell, and the terminal device communicates with the network device through the transmission resource (for example, frequency domain resource, or frequency spectrum resource) on the carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell (Small cell). The small cell can include a metro cell (Metro cell), a micro cell (Micro cell), a pico cell (Pico cell), a femto cell (Femto cell), and the like. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.

[0044] Before introducing the technical solutions of the present application, some related technical knowledge involved in the present application will be introduced and explained. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, which all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0045] 1. Basic configuration of NR SRS (Sounding Reference Signal)

[0046] The basic configuration of SRS in NR is as follows:

[0047] a) NR Release 15 (Rel-15) supports 64 SRS bandwidth configuration methods, the minimum bandwidth of one SRS resource is 4 RBs (Resource Block), and the maximum bandwidth is 272 RBs.

[0048] b) For different SRS purposes, the base station can configure different SRS resource sets for the terminal device, and indicate the purpose of the SRS resource set through high-layer signaling, for example, the SRS resource set can be used for antenna switching. In order not to waste resources in the implementation of the target function, the NR system regulates the number of SRS resource sets and the configuration of the SRS resource set that can be configured for different purposes. The maximum number of SRS resources that one SRS resource set can contain and the maximum number of SRS ports that an SRS resource can contain depend on the capability of the terminal device and the purpose of the SRS resource set.

[0049] 2. SRS antenna switching scheme of NR Release 15

[0050] In the NR system, the base station side uses channel reciprocity to obtain downlink channel state information by measuring SRS. Limited by cost and hardware, the number of antennas that the terminal device can send at the same time may be less than the number of receiving antennas, resulting in different terminal devices having different antenna transceiving capabilities. In order to support terminal devices with fewer sending antennas than receiving antennas to also obtain downlink information through channel reciprocity, the SRS is sent in an antenna switching manner. The transceiving capabilities discussed in Rel-15 include: the number of sending antennas is the same as the number of receiving antennas (i.e. T = R), the number of sending antennas is 1 and the number of receiving antennas is 2 (i.e. 1T2R), the number of sending antennas is 1 and the number of receiving antennas is 4 (i.e. 1T4R), and the number of sending antennas is 2 and the number of receiving antennas is 4 (i.e. 2T4R). In the subsequent description, the number of sending antennas is the number of ports of the SRS resource, and the number of receiving antennas is the number of antenna ports. For different antenna transceiving capabilities, the base station can configure the SRS resource set for the terminal device in one of the following ways for downlink channel state information acquisition:

[0051] a) T = R: up to 2 SRS resource sets can be configured, each SRS resource set contains 1 SRS resource, and the number of ports of the SRS resource can be 1, 2, or 4.

[0052] b) 1T2R: up to 2 SRS resource sets can be configured, each SRS resource set contains 2 SRS resources sent in different OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the number of ports of each SRS resource is 1.

[0053] c) 2T4R: up to 2 SRS resource sets are configured, each SRS resource set contains 2 SRS resources sent in different OFDM symbols, and the number of ports of each SRS resource is 2. Taking 2T4R as an example, a schematic diagram of SRS antenna switching is shown in FIG. 2.

[0054] In order to support terminal devices with a number of transmit antennas less than a number of receive antennas to also obtain downlink information through channel reciprocity, the SRS is transmitted in an antenna switching manner, and the related art has the following problems:

[0055] Since the number of receive antennas of a terminal device can support larger-scale antenna deployment, the SRS antenna switching manner is used to obtain downlink channel quality, which will bring a large SRS resource overhead. For example, if a terminal device supports 32 receive antennas, if it is configured as 1T32R, the terminal device needs to send 32 single-port SRS resources to support 1T32R antenna switching, which will bring a large SRS resource overhead. Moreover, each SRS resource needs to have a time interval of 1 symbol, which will also bring a large latency. Therefore, how to reduce the SRS resource overhead and reduce the latency is a problem to be solved at present.

[0056] 3. Neural Network (NN) and Machine Learning

[0057] A neural network is an operation model composed of multiple neuron nodes connected to each other, and a neuron structure is shown in subgraph 1 of FIG. 3, where a1, …, an, 1 are input signals, and w1, …, wn, b are weights. The connection between nodes represents the weighted value from the input signal to the output signal, which is called the weight; each node performs weighted summation on different input signals, and obtains the output t through a specific activation function f.

[0058] A simple neural network is shown in subgraph 2 of FIG. 3, which includes an input layer, a hidden layer, and an output layer. Through different connection modes of multiple neurons, weights, and activation functions, different outputs can be generated, and the mapping relationship from input to output can be fitted. Each upper-level node is connected to all lower-level nodes. This full connection model can also be called a DNN (Deep Neural Network) in the present case, which can be used as the NN model of the present application.

[0059] The basic structure of a CNN (Convolutional Neural Network) is shown in subgraph 3 of FIG. 3, and can include an input layer, multiple convolutional layers, multiple pooling layers, a fully connected layer, and an output layer. Each neuron of a convolutional kernel in a convolutional layer is locally connected to its input, and the maximum or average value features of a local layer are extracted by introducing a pooling layer, effectively reducing the parameters of the network and mining local features, so that the convolutional neural network can quickly converge and achieve excellent performance.

[0060] An RNN (Recurrent Neural Networks) is a neural network for modeling sequence data, and has achieved remarkable results in natural language processing, such as machine translation, speech recognition, and other applications. Specifically, the network memorizes information at past time and uses it in the calculation of the current output, i.e., the nodes between the hidden layers are no longer unconnected but connected, and the input of the hidden layer includes not only the input layer but also the output of the previous hidden layer. Common RNNs include LSTM (Long Short-Term Memory) and GRU (Gated Recurrent Unit) structures.

[0061] Referring to FIG. 4, a flowchart of a resource configuration method according to an embodiment of the present application is shown. The method can be applied to the network architecture shown in FIG. 1. As shown in FIG. 4, the method can include the following step 410:

[0062] At step 410, the network device sends configuration information to the terminal device, the configuration information being used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets including one or more uplink reference signal resources, wherein the number of receive antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of receive antennas supported by the terminal device, and M is a positive integer.

[0063] Correspondingly, the terminal device receives the configuration information.

[0064] The antenna switching scheme refers to a strategy for determining how to select and switch the transmit antennas and receive antennas of the terminal device in a multi-antenna system to achieve uplink reference signal transmission. In some embodiments, at least one uplink reference signal resource included in the same resource set can have the same power control information to achieve unified management of the uplink reference signal resources. In some embodiments, the number of uplink reference signal resources included in different resource sets can be the same or different, which is not limited in the present application.

[0065] In some embodiments, the uplink reference signal is a reference signal sent by the terminal device to the network device. In some embodiments, the uplink reference signal is an SRS. The uplink reference signal resource refers to a time-frequency resource configured by the network device for the terminal device to send the uplink reference signal. Exemplarily, the uplink reference signal resource can be an SRS resource. The network device utilizes channel reciprocity to obtain the downlink channel state information (CSI) of the terminal device receiving antenna (also referred to as an antenna port) by measuring the uplink reference signal sent by the terminal device. That is, by means of channel reciprocity, the network device can obtain the downlink channel state information of the antenna port by measuring the uplink channel state information obtained by measuring the uplink reference signal.

[0066] In some embodiments, all the antenna ports included by the terminal device can be configured for the uplink reference signal resource, or part of the antenna ports included by the terminal device can be configured for the uplink reference signal resource. The number of receiving antennas supported by the terminal device refers to the maximum number of receiving antennas that can be configured by the terminal device, that is, the number of all the antenna ports included by the terminal device, which can be denoted as y in the present application, and y is a positive integer. In some embodiments, the number of receiving antennas of the terminal device corresponding to the first antenna switching scheme, that is, the number of part of the antenna ports included by the terminal device, can be denoted as p in the present application, and p is a positive integer, where p < y. It can be understood that p antenna ports can be determined from the y antenna ports of the terminal device as the antenna ports associated with the uplink reference signal resource.

[0067] In some embodiments, the number of transmitting antennas of the terminal device can be denoted as x in the present application, and x is a positive integer. Then, the first antenna switching scheme can be represented as xTpR, indicating that the number of transmitting antennas of the terminal device is x and the number of receiving antennas (the number of antenna ports) is p, that is, the number of antenna ports configured for the uplink reference signal resource is p. In some embodiments, when the antenna switching scheme is xTyR, it indicates that the number of transmitting antennas of the terminal device is x and the number of receiving antennas is y, that is, the number of antenna ports of the terminal device configured for the uplink reference signal resource is y.

[0068] In some embodiments, the terminal device transmits one or more uplink reference signals according to the configuration information. The terminal device transmits one or more uplink reference signals according to each uplink reference signal resource included in the configuration information. For example, when the number of ports of an uplink reference signal resource is one, one uplink reference signal can be transmitted according to the uplink reference signal resource. For example, when the number of ports of an uplink reference signal resource is multiple, multiple uplink reference signals can be transmitted according to the uplink reference signal resource. For example, for a 1T4R antenna switching scheme, four single-port uplink reference signal resources can be configured, wherein uplink reference signal resource 0, uplink reference signal resource 1, uplink reference signal resource 2, and uplink reference signal resource 3 can correspond to different OFDM symbols in the time domain, and a guard interval, such as a 1-symbol time interval, can exist between adjacent uplink reference signal resources.

[0069] In some embodiments, when the terminal device includes part of the antenna ports (p antenna ports) for the uplink reference signal resource, the network device can obtain the downlink CSI of the part of the antenna ports (p antenna ports). In some embodiments, when the terminal device includes all of the antenna ports (y antenna ports) for the uplink reference signal resource, the network device can obtain the full downlink CSI of all of the antenna ports (y antenna ports).

[0070] Compared with the case where the receiving antenna of the terminal device corresponding to the antenna switching scheme is all of the receiving antennas of the terminal device, in step 410, the receiving antenna of the terminal device corresponding to the first antenna switching scheme is only part of the receiving antennas of all of the receiving antennas, that is, the antenna ports of the terminal device configured for the uplink reference signal resource are only part of the antenna ports of all of the antenna ports, which reduces the number of uplink reference signal resources used to obtain the downlink CSI, thereby reducing the resource overhead and time delay of transmitting the uplink reference signal between the terminal device and the network device.

[0071] In summary, the technical scheme provided by the embodiments of the present application reduces the number of receiving antennas configured for the uplink reference signal resource, thereby reducing the resource overhead and time delay of transmitting the uplink reference signal between the terminal device and the network device.

[0072] The following describes a specific implementation of configuring the antenna port group of the terminal device for the resource set and configuring the antenna ports of the terminal device for the uplink reference signal resource.

[0073] In some embodiments, the association between the resource set and the antenna port group of the terminal device is predefined. In some embodiments, the association between the resource set and the antenna port group of the terminal device indicates a manner in which the resource set configures the antenna port group of the terminal device. In some embodiments, one antenna port group includes at least one antenna port. For example, the number of the at least one antenna port can be 2, 4, 6, 8, which is not limited in the present application. In some embodiments, the number of antenna ports included in different antenna port groups can be the same or different, which is not limited in the present application. In some embodiments, the antenna ports of the terminal device can be divided into a plurality of antenna port groups according to different setting positions of the antenna ports on the terminal device, wherein the antenna ports included in different antenna port groups correspond to different setting positions. For example, assuming that the setting positions of the antenna ports on the terminal device include four setting positions of up, down, left and right, the antenna ports of the terminal device are divided into four antenna port groups, namely antenna port group 0, antenna port group 1, antenna port group 2 and antenna port group 3. Wherein, the antenna port group 0 can correspond to the position of up, the antenna port group 1 can correspond to the position of down, the antenna port group 2 can correspond to the position of left and the antenna port group 3 can correspond to the position of right.

[0074] In some embodiments, one resource set corresponds to one antenna port group of the terminal device. That is, the resource set and the antenna port group of the terminal device are in a one-to-one correspondence. In some embodiments, the index of the resource set and the index of the antenna port group are associated in order. For example, the association between the resource set and the antenna port group of the terminal device can be as shown in Table 1, wherein the index of the antenna port group can also start from 0, which is not limited in the present application.

[0075] Table 1

[0076] In some embodiments, the association between the uplink reference signal resource and the antenna port of the terminal device is predefined. In some embodiments, the number of ports of the uplink reference signal resource can be equal to the number of transmission antennas of the terminal device. For example, the number of transmission antennas of the terminal device can be x, and the number of ports of the uplink reference signal resource is also x.

[0077] In some embodiments, one uplink reference signal resource corresponds to one antenna port of the terminal device. That is, the uplink reference signal resource is in one-to-one correspondence with the antenna port of the terminal device. That is, the number of ports of the uplink reference signal resource is 1, such as port 0. In some embodiments, the index of the uplink reference signal resource is associated with the index of the antenna port in order. The index of the uplink reference signal resource refers to the identifier of the uplink reference signal resource, which is used to distinguish different uplink reference signal resources. The index of the antenna port refers to the identifier of the antenna port, which is used to distinguish different antenna ports.

[0078] In some embodiments, in the case where one uplink reference signal resource corresponds to one antenna port of the terminal device, the index of one uplink reference signal resource is associated with the index of one antenna port. For example, taking SRS as an example, Table 2 below shows the correspondence between the index of the uplink reference signal resource and the index of the antenna port in the 1T4R (i.e., the number of terminal device transmitting antennas is 1 and the number of antenna ports is 4) antenna switching scheme. Wherein the number of ports of each SRS resource is 1, the correspondence between the index of the uplink reference signal resource and the index of the antenna port is shown in Table 2.

[0079] Table 2

[0080] In some embodiments, one resource set corresponds to one antenna port group of the terminal device. The index of the resource set is associated with the index of the antenna port group in order. As shown in FIG. 5, the number of antenna ports of the terminal device is 16, including 4 antenna port groups, and the index information of the antenna port of the terminal device transmitting the uplink reference signal can be distributed in the 4 antenna port groups. Wherein the index information of the 16 antenna ports can be 0-15 respectively, assuming that the number of ports of each SRS resource is 1. It can be that SRS resource set 0 corresponds to antenna port group 0, SRS resource set 1 corresponds to antenna port group 1, SRS resource set 2 corresponds to antenna port group 2, and SRS resource set 3 corresponds to antenna port group 3.

[0081] In some embodiments, when the uplink reference signal resource comprises a single port, then one single-port uplink reference signal resource corresponds to one antenna port. The index of the uplink reference signal resource is associated with the index of the antenna port in sequence, and the index of one reference signal resource corresponds to the index of one antenna port. As shown in FIG. 5, the number of ports of each SRS resource is 1, which can be that SRS resource 0 corresponds to antenna port 0, …, SRS resource 15 corresponds to antenna port 15. The network device indicates the terminal device to send the SRS resource associated with a specific antenna port by activating the SRS resource, so that the network device can indicate the SRS resource and the associated antenna port by configuring and activating the SRS resource set / SRS resource at the same time. For example, the network device activates the SRS resources corresponding to indexes 0, 6, 8, and 14, i.e., when indicating 1T4R transmission, the SRS resource transmission is associated with the antenna port of the terminal device.

[0082] In some embodiments, one uplink reference signal resource corresponds to multiple antenna ports of a terminal device. In some embodiments, one uplink reference signal resource port corresponds to one antenna port of a terminal device. In some embodiments, the index of the uplink reference signal resource is associated with the index of the antenna port in sequence.

[0083] In some embodiments, in the case where one uplink reference signal resource corresponds to multiple antenna ports of a terminal device, the index of one uplink reference signal resource is associated with the indexes of multiple antenna ports. Exemplarily, taking SRS as an example of the uplink reference signal, Table 3 below shows the correspondence between the index of the uplink reference signal resource and the index of the antenna port under a 2T4R (i.e., the number of terminal device sending antennas is 2 and the number of antenna ports is 4) antenna switching scheme. Wherein each SRS resource contains two ports, wherein SRS resource 0 can contain port 0 and port 1, and SRS resource 1 can contain port 2 and port 3. The correspondence between the index of the uplink reference signal resource and the index of the antenna port is shown in Table 3 below.

[0084] Table 3

[0085] In some embodiments, when the uplink reference signal resource comprises multiple ports, then one multi-port uplink reference signal resource corresponds to multiple antenna ports. The index of the uplink reference signal resource is associated with the index of the antenna port in sequence, and the index of one reference signal resource corresponds to the index of multiple antenna ports. Assuming that the number of antenna ports of the terminal device is 16, including 4 antenna port groups, the index information of the antenna port of the terminal device sending the uplink reference signal can be distributed in the 4 antenna port groups. The index information of the 16 antenna ports can be 0-15 respectively, and assuming that the number of ports of each SRS resource is 2. The SRS resource set and the antenna port group have a one-to-one correspondence, and the specific correspondence can be seen from the above related content. Since the number of ports of each SRS resource is 2, each SRS resource index corresponds to 2 antenna port indexes, which can be SRS resource 0 corresponding to antenna port 0 and antenna port 1, SRS resource 1 corresponding to antenna port 2 and antenna port 3, …, SRS resource 7 corresponding to antenna port 14 and antenna port 15. The network device indicates the terminal device to send the SRS resource associated with a specific antenna port by activating the SRS resource, so that the network device can indicate the SRS resource and the associated antenna port by configuring and activating the SRS resource set / SRS resource at the same time. For example, the network device activates the SRS resources corresponding to indexes 0 and 2, that is, when 2T4R transmission is indicated, the SRS resource transmission is associated with the antenna port of the terminal device.

[0086] The above method can flexibly determine the association relationship between the resource set and the antenna port group of the terminal device and between the uplink reference signal resource and the antenna port of the terminal device.

[0087] The specific implementation of determining the downlink channel state information corresponding to the second antenna switching scheme (i.e., xTyR) based on the first antenna switching scheme (i.e., xTpR) will be introduced below. That is, the specific implementation of determining the full downlink channel state information corresponding to xTyR based on the partial downlink channel state information corresponding to xTpR.

[0088] In some embodiments, as shown in FIG. 6, the network device sends first information to the terminal device, the first information being used to instruct to apply an AI (Artificial Intelligence) model to determine the downlink channel state information corresponding to the second antenna switching scheme based on the first antenna switching scheme, wherein the number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is the number of receiving antennas supported by the terminal device. Correspondingly, the terminal device receives the first information. The above method only needs to use the downlink channel state information corresponding to part of the antenna ports to estimate the full downlink channel state information through the AI model. The number of antenna ports configured for the uplink reference signal resource is reduced, thereby reducing the resource overhead and latency of transmitting the uplink reference signal between the terminal device and the network device.

[0089] In some embodiments, the above-mentioned way of determining the downlink channel state information corresponding to the second antenna switching scheme (i.e., xTyR) based on the first antenna switching scheme (i.e., xTpR) is different from the way of determining the corresponding downlink channel state information based on the first antenna switching scheme (i.e., xTpR) in the association relationship between the uplink reference signal resource and the terminal device antenna port. The above-mentioned way of determining the full downlink channel state information corresponding to xTyR based on xTpR can use the AI model to obtain the partial downlink state information obtained from xTpR to determine the full downlink CSI corresponding to xTyR. The method of determining the corresponding downlink channel state information based on xTpR only uses the antenna switching mode to transmit the uplink reference signal to obtain the downlink CSI. The design of the association relationship between the uplink reference signal resource and the terminal device antenna port is different in the two ways.

[0090] In some embodiments, the first information is carried in RRC (Radio Resource Control) signaling, or MAC CE (Medium Access Control Control Element), or DCI (Downlink Control Information). Exemplarily, the first information can be carried in RRC signaling, specifically, the RRC signaling can include: a first function ENUMERATED{enabled}OPTIONAL. The first function is used to instruct the network device to obtain the downlink channel state information corresponding to xTyR through the AI model. Exemplarily, the first information can be carried in DCI, and the DCI can include a first bit, which is used to instruct the network device to obtain the downlink CSI corresponding to xTyR through the AI model.

[0091] In some embodiments, before the terminal device receives the configuration information, the terminal device sends capability information, the capability information being used to indicate at least one of the following: a second antenna switching capability supported by the terminal device, a first antenna switching capability expected by the terminal device; wherein the number of receiving antennas corresponding to the first antenna switching capability is less than the number of receiving antennas corresponding to the second antenna switching capability. Correspondingly, the network device receives the capability information.

[0092] In some embodiments, the second antenna switching capability supported by the terminal device refers to an xTyR antenna switching scheme supported by the terminal device. In some embodiments, for a certain terminal device, the second antenna switching capability supported by the terminal device includes one antenna switching scheme. For example, assuming that the number of transmitting antennas of the terminal device is 1 and the number of receiving antennas supported is 32, the second antenna switching capability supported by the terminal device can be represented as 1T32R; for example, assuming that the number of transmitting antennas of the terminal device is 1 and the number of receiving antennas supported is 16, the second antenna switching capability supported by the terminal device can be represented as 1T16R; for example, assuming that the number of transmitting antennas of the terminal device is 1 and the number of receiving antennas supported is 24, the second antenna switching capability supported by the terminal device can be represented as 1T24R.

[0093] In some embodiments, the first antenna switching capability expected by the terminal device refers to an xTpR antenna switching scheme expected by the terminal device. Wherein p < y. In some embodiments, for a certain terminal device, the first antenna switching capability expected by the terminal device can include multiple antenna switching schemes. For example, assuming that the number of transmitting antennas of the terminal device is 1 and the number of receiving antennas supported is 32, the number of receiving antennas corresponding to the first antenna switching capability can be 8, 16, 24, etc., which is not limited in the present application. Then the first antenna switching capability expected by the terminal device can be represented as 1T8R, 1T16R, 1T24R, respectively.

[0094] The above method can realize effective communication and coordination of the resource demand of the terminal device by sending the capability information, thereby optimizing the configuration of the uplink reference signal resource.

[0095] In some embodiments, as shown in FIG. 6, the terminal device sends second information, the second information being used to determine an AI model and / or configuration information, the AI model being used to determine the downlink channel state information corresponding to the second antenna switching scheme based on the first antenna switching scheme, wherein the number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is the number of receiving antennas supported by the terminal device.

[0096] In some embodiments, the second information can be sent together with the capability information or separately from the capability information. In some embodiments, the second information can be sent in the same time slot as the capability information or in different time slots from the capability information. In some embodiments, the second information can be sent through the same signaling as the capability information or through different signaling from the capability information. In some embodiments, the terminal device sends the second information, and the network device receives the second information to determine the configuration information. In this case, the terminal device sends the second information before receiving the configuration information. In some embodiments, the terminal device sends the second information, and the network device receives the second information to determine the AI model. In this case, the terminal device can send the second information after receiving the configuration information.

[0097] In some embodiments, the second information includes at least one of the following: antenna port information of the terminal device; indication information of the first antenna switching scheme; indication information of the second antenna switching scheme; indication information of the AI model.

[0098] In some embodiments, the antenna port information of the terminal device includes at least one of the following: the number of antenna port groups of the terminal device; the activated antenna port group of the terminal device; the closed antenna port group of the terminal device; the index information of the antenna port of the terminal device sending the uplink reference signal.

[0099] In some embodiments, the antenna port group activated by the terminal device, also referred to as the visible antenna port group, refers to the antenna port group that is currently actually used for communication. The terminal device can selectively activate part of the antenna port groups according to different requirements (such as service type, energy saving requirement, etc.). It can be understood that all the antenna ports included in the activated antenna port group are in the activated state. Exemplarily, as shown in subgraph 1 in FIG. 7, the terminal device includes 4 antenna port groups, and the terminal device can activate only one of the antenna port groups, and all the antenna ports included in the activated antenna port group are in the activated state. In some embodiments, the antenna port information of the terminal device can include the index of the antenna port group activated by the terminal device. Specifically, the index of the antenna port group activated by the terminal device can be indicated in the form of bitmap, where each bit in the bitmap corresponds to an antenna port group index, and is used to indicate the activation state of the corresponding antenna port group. Assuming that the index information of the 4 antenna port groups is 0-3 respectively. If bit 1 is used to indicate the activation state, then bitmap [1, 0, 0, 0] is used to indicate that the antenna port group corresponding to index 0 is in the activated state, and the antenna port groups corresponding to index 1, index 2 and index 3 are in the closed state. The above method only needs the network device to know the currently working (activated) antenna port group, thereby reducing the measurement cost of SRS and also reducing the SRS transmission cost. The terminal device reports the antenna port information through the second information, which is beneficial for the network device to select the AI model on the one hand, and is also beneficial for the network device to obtain the full downlink CSI by using less SRS on the other hand.

[0100] In some embodiments, the antenna port group closed by the terminal device, also referred to as the antenna port group not activated, refers to the antenna port group not currently activated. The terminal device can selectively activate part of the antenna port groups according to different requirements (such as service type, energy saving requirement, etc.). It can be understood that all the antenna ports included in the closed antenna port group are in a closed state. For example, the terminal device includes 4 antenna port groups, and the terminal device can close 2 antenna port groups, and the antenna ports included in the closed 2 antenna port groups are in a closed state. In some embodiments, the antenna port information of the terminal device can include the index of the antenna port group closed by the terminal device. Specifically, the index of the antenna port group closed by the terminal device can be indicated in the form of bitmap, wherein each bit in the bitmap corresponds to an antenna port group index, and is used to indicate the closed state of the corresponding antenna port group. Assuming that the index information of the 4 antenna port groups is 0~3. If bit 1 is used to indicate the closed state, then bitmap [1, 1, 0, 0] is used to indicate that the antenna port groups corresponding to index 0 and index 1 are in a closed state, and the antenna port groups corresponding to index 2 and index 3 are in an activated state. The above method only needs the network device to know the currently closed antenna port group, thereby reducing the measurement SRS overhead and also reducing the SRS transmission overhead. The terminal device reports the antenna port information through the second information, which is beneficial for the network device to select the AI model. On the other hand, it is also beneficial for the network device to obtain full downlink CSI with less SRS.

[0101] In some embodiments, the terminal device sends the index information of the antenna port of the uplink reference signal, which can be understood as the index corresponding to the activated antenna port of the terminal device. The index information of the antenna port can cover all the antenna port groups included by the terminal device, and the index information of the antenna port can also not cover all the antenna port groups included by the terminal device. The index information of different antenna ports can correspond to the same antenna port group, or can correspond to different antenna port groups. As shown in subgraph 2 in FIG. 7, where the number of antenna ports of the terminal device is 16, including 4 antenna port groups, the terminal device can distribute the index information of the antenna port of the uplink reference signal in the 4 antenna port groups. For example, assuming that the index information of the 16 antenna ports is 0-15 respectively, the terminal device can send the index information of the antenna port of the uplink reference signal including 2, 6, 9, and 15. Assuming that the number of transmission antennas of the terminal device is 1, by configuring the terminal device with 4 single-port uplink reference signal resources, the terminal device can estimate the full downlink CSI corresponding to 1T16R based on 1T4R through the AI model. For example, for the above example, the terminal device includes 16 antenna ports, and the terminal device can only activate 4 antenna ports, which belong to different antenna port groups, and cover the 4 antenna port groups included by the terminal device.

[0102] In some embodiments, the activated antenna port can be indicated in two ways. Way 1: the antenna port information of the terminal device can include the index of the activated antenna port of the terminal device. Specifically, the index of the activated antenna port of the terminal device can be indicated by bitmap, where each bit in the bitmap corresponds to an antenna port index, which is used to indicate the activation state of the corresponding antenna port. Where bit 1 is used to indicate the activation state, bitmap [0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1] is used to indicate that the antenna ports corresponding to indexes 2, 6, 9 and 15 are in the activated state, and the remaining indexes correspond to the antenna port group in the closed state. Way 2: it can be first indicated whether there is an activated antenna port in the antenna port group included by the terminal device; for the antenna port group with activated antenna ports, the activation state of each antenna port included is further indicated. Exemplarily, for the above example, the bitmap can be [1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1]. Among them, the first 4 bits "1111" are used to indicate that there is an activated antenna port in any one of the four antenna port groups. The 5th-8th bits "0010" are used to indicate the activation state of the 4 antenna ports included in the antenna port group 0, where the 3rd bit corresponds to the activated antenna port with index 2. Similarly, the 9th-12th bits "0010" are used to indicate the activation state of the 4 antenna ports included in the antenna port group 1, the 13th-16th bits "0100" are used to indicate the activation state of the 4 antenna ports included in the antenna port group 2, and the 17th-20th bits "0001" are used to indicate the activation state of the 4 antenna ports included in the antenna port group 3. Then it is finally determined that the antenna ports corresponding to indexes 2, 6, 9 and 15 are in the activated state.

[0103] In some embodiments, the indication information of the second antenna switching scheme xTyR is used to determine the first AI model from a plurality of AI models. In this way, the AI model training method 1 is used, and the details are described below. The second antenna switching scheme and the AI model are in a one-to-one correspondence, that is, one second antenna switching scheme corresponds to one AI model. Different second antenna switching schemes correspond to different AI models. That is, the value of y is used to determine the first AI model from a plurality of AI models. Exemplarily, the AI models corresponding to 1T32R and 1T16R are different. Assuming that y = 16, the AI model corresponding to 1T16R is determined as the first AI model from the two AI models corresponding to 1T32R and 1T16R. In some embodiments, the first AI model can obtain the downlink CSI corresponding to xTyR according to the partial uplink CSI measured by the first AI model.

[0104] In some embodiments, the indication information of the first antenna switching scheme xTpR and the indication information of the second antenna switching scheme xTyR are used to determine the first AI model from a plurality of AI models. In this way, the corresponding AI model training method 2 is used, and the details are described below. The combination of the first antenna switching scheme and the second antenna switching scheme is in a one-to-one correspondence with the AI model, that is, one combination of the first antenna switching scheme and the second antenna switching scheme corresponds to one AI model. Different combinations of the first antenna switching scheme and the second antenna switching scheme correspond to different AI models. That is, the first AI model is determined from a plurality of AI models by the values of y and p. Exemplarily, the combination of 1T32R and 1T16R (where y = 32, p = 16) corresponds to an AI model different from the AI model corresponding to the combination of 1T32R and 1T24R (where y = 32, p = 24). Assuming that y = 32, p = 16, the AI model corresponding to the combination of 1T32R and 1T16R is determined as the first AI model from the two AI models corresponding to the combination of 1T32R and 1T16R and the combination of 1T32R and 1T24R. In some embodiments, the first AI model can obtain the downlink CSI corresponding to xTyR according to the partial uplink CSI measured by the first AI model, and the port group index and / or port index of the p antenna ports.

[0105] In some embodiments, the indication information of the AI model is used to report the AI model index determined by the terminal device or the associated ID (associated ID) related to the AI model to the network device. The AI model corresponding to the AI model index or the associated ID is applicable to different scenarios of the first antenna switching scheme. In some embodiments, the terminal device reports the AI model index determined by the terminal device or the associated ID (associated ID) related to the AI model to the network device. The network device can predict the downlink CSI corresponding to xTyR based on the AI model reported by the terminal device, or can not use the AI model reported by the terminal device to predict the downlink CSI corresponding to xTyR, which is not limited in the present application.

[0106] In some embodiments, when the configuration information is determined based on the second information, the configuration information is associated with the second information, that is, the network device can determine the first antenna switching scheme in a manner expected by the terminal device. In this case, M is the same as the number of antenna port groups of the terminal device; or M is the same as the number of activated antenna port groups of the terminal device; or a total of N uplink reference signal resources are included in the M resource sets, the number of transmission antennas x of each of the N uplink reference signal resources is the number of transmission antennas of the terminal device corresponding to the first antenna switching scheme, the x transmission antennas of each uplink reference signal resource are associated with different x reception antennas of the terminal device, the total number of reception antennas associated with the N uplink reference signal resources is the number of reception antennas p of the terminal device corresponding to the first antenna switching scheme, N is a positive integer, and x is a positive integer.

[0107] The transmission antennas of the uplink reference signal resource are also referred to as the ports of the uplink reference signal resource. The x transmission antennas (ports) of each uplink reference signal resource are associated with different x reception antennas of the terminal device, that is, the total number of reception antennas associated with the N uplink reference signal resources can be represented as N*x, where N*x=p. In this way, the total number of reception antennas associated with the N uplink reference signal resources can be matched with the number of reception antennas corresponding to the first antenna switching scheme.

[0108] In some embodiments, the network device monitors the performance indicators of the AI model, and when the performance indicators do not meet the expected values, the mechanism of transmitting the uplink reference signal using xTyR is used. In some embodiments, the performance indicators include at least one of the following: Generalized Cosine Similarity (GCS), Squared Generalized Cosine Similarity (SGCS), Block Error Rate (BLER), Spectral Efficiency, etc. According to the monitoring result of the performance indicators, the above method can select whether to fallback to the mechanism of transmitting the uplink reference signal using xTyR to ensure the accuracy and reliability of the obtained downlink CSI.

[0109] The training process of the AI model is introduced below.

[0110] In some embodiments, the AI model is trained by the terminal device or the network device. When the AI model is trained by the terminal device, the terminal device sends the AI model trained offline to the network device, and the network device receives and stores the AI model, so as to subsequently realize prediction of full downlink CSI. When the AI model is trained by the network device, the complexity and power consumption pressure of the terminal device side can be reduced, and the efficiency of AI model training can be improved.

[0111] In some embodiments, the AI model can be trained using the following two methods.

[0112] Method 1: The AI model can be trained for a terminal device supported receive antenna number y. In this case, different AI models are trained for different terminal device supported receive antenna numbers. Exemplarily, when y = 32, an AI model 1 can be trained for xT32R, and when y = 64, an AI model 2 can be trained for xT64R, where the AI model 1 and the AI model 2 are different AI models, and x is a transmit antenna number of the terminal device.

[0113] In some embodiments, in the training stage, the input of the AI model can include partial uplink CSI measured by an uplink reference signal corresponding to xTpR under different p values. Wherein, p can be 4, 8, 16, etc. Optionally, the input can also include a terminal device supported receive antenna number y value and a terminal device actually used receive antenna number p value. Optionally, the input can also include an index of each of the p antenna ports and / or an index of an antenna port group of each of the p antenna ports. The output of the AI model is predicted downlink CSI corresponding to xTyR. The parameters of the AI model can be updated to minimize the error between the predicted downlink CSI corresponding to xTyR and the actual downlink CSI corresponding to xTyR, so as to obtain the trained AI model.

[0114] Method 2: The AI model is trained for a combination of a terminal device supported receive antenna number and a terminal device actually used receive antenna number. In this case, different AI models are trained for different combinations of terminal device supported receive antenna numbers and terminal device actually used receive antenna numbers. Exemplarily, when y = 32 and p = 24, an AI model 1 can be trained for a combination of xT32R and xT24R, and when y = 32 and p = 16, an AI model 2 can be trained for a combination of xT32R and xT16R, where the AI model 1 and the AI model 2 are different AI models, and x is a transmit antenna number of the terminal device.

[0115] In some embodiments, in the training phase, the input of the AI model can include the partial uplink CSI measured by the uplink reference signal corresponding to xTpR at a certain p value. Optionally, the input can also include the number of receive antennas y supported by the terminal device and the number of receive antennas p actually used by the terminal device. Optionally, the input can also include the index of each of the p antenna ports and / or the index of the antenna port group of each of the p antenna ports. The output of the AI model is the predicted downlink CSI corresponding to xTyR. The parameters of the AI model can be updated to minimize the error between the predicted downlink CSI corresponding to xTyR and the actual downlink CSI corresponding to xTyR, so as to obtain the trained AI model.

[0116] In some embodiments, the AI model in the above method 1 and method 2 can be constructed based on the above DNN network. Specifically, the DNN network can include an input layer, a hidden layer, a fully connected layer, an activation function layer (such as ReLU, Sigmoid, etc.), and an output layer. The input layer receives the partial uplink CSI measured by the uplink reference signal corresponding to xTpR at different p values (corresponding to method 1) or the partial uplink CSI measured by the uplink reference signal corresponding to xTpR at a certain p value (corresponding to method 2). The input data can also include the number of receive antennas y supported by the terminal device and the number of receive antennas p actually used. The input data can also include the index of each of the p antenna ports and / or the index of the antenna port group of each of the p antenna ports. These input data are preliminarily processed in the input layer and transmitted to the subsequent hidden layer for further feature extraction and learning. The hidden layer extracts deep features of the input data through a multi-layer neural network structure. The output of each layer can be converted through a nonlinear activation function to improve the fitting ability of the model to complex data patterns. The number of layers and the number of neurons in each layer of the hidden layer can be adjusted according to actual needs, which are not limited in the present application. The output layer generates the predicted downlink CSI corresponding to xTyR. The loss function of the DNN network is used to measure the error between the predicted downlink CSI and the actual downlink CSI. The loss function can include mean squared error (MSE) or other loss functions suitable for regression tasks. The parameters of the DNN network are optimized by minimizing the value of the loss function. In the training process, the model parameters can be adjusted based on the gradient information of the loss function using optimization algorithms (such as Adam, SGD, etc.) to reduce the prediction error and improve the model performance. In some embodiments, the AI model can also be constructed based on neural network models such as CNN, RNN, etc., which are not limited in the present application.

[0117] The method 1 can improve the generalization and flexibility of the model by training for the number of receive antennas y supported by the terminal device. The method 2 can improve the prediction accuracy of the model by training for the combination of the number of receive antennas supported by the terminal device and the number of receive antennas actually used by the terminal device.

[0118] The above embodiments only introduce the technical solutions provided by the present application from the perspective of the interaction between the terminal device and the network device. The steps performed by the terminal device can be implemented as a resource configuration method on the terminal device side. The steps performed by the network device can be implemented as a resource configuration method on the network device side.

[0119] The following is a device embodiment of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0120] Please refer to FIG. 8, which shows a block diagram of a resource configuration device according to an embodiment of the present application. The device has the function of implementing the above-mentioned resource configuration method, which can be implemented by hardware or by executing corresponding software by hardware. The device can be the terminal device introduced above or can be arranged in the terminal device. As shown in FIG. 8, the device 800 can include a receiving module 810.

[0121] The receiving module 810 is configured to receive configuration information, wherein the configuration information is used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets includes one or more uplink reference signal resources, the number of receive antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of receive antennas supported by the terminal device, and M is a positive integer.

[0122] In some embodiments, the association relationship between the resource set and the antenna port group of the terminal device is predefined, and / or the association relationship between the uplink reference signal resource and the antenna port of the terminal device is predefined.

[0123] In some embodiments, one resource set corresponds to one antenna port group of the terminal device, and / or one uplink reference signal resource corresponds to one or more antenna ports of the terminal device.

[0124] In some embodiments, the index of the uplink reference signal resource is associated with the index of the antenna port in sequence.

[0125] In a case where one uplink reference signal resource corresponds to one antenna port of the terminal device, an index of one uplink reference signal resource is associated with an index of one antenna port; or in a case where one uplink reference signal resource corresponds to multiple antenna ports of the terminal device, an index of one uplink reference signal resource is associated with indexes of multiple antenna ports.

[0126] In some embodiments, the receiving module 810 is further configured to receive first information, the first information being used to indicate that an AI model is applied to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein a number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is a number of receiving antennas supported by the terminal device.

[0127] In some embodiments, the first information is carried in RRC signaling, or MAC CE, or DCI.

[0128] In some embodiments, the apparatus 800 further includes a sending module (not shown in FIG. 8).

[0129] The sending module is configured to send capability information, the capability information being used to indicate at least one of the following: a second antenna switching capability supported by the terminal device, a first antenna switching capability expected by the terminal device; wherein a number of receiving antennas corresponding to the first antenna switching capability is less than a number of receiving antennas corresponding to the second antenna switching capability.

[0130] In some embodiments, the sending module is further configured to send second information, the second information being used to determine an AI model and / or the configuration information, the AI model being used to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein a number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is a number of receiving antennas supported by the terminal device.

[0131] In some embodiments, the second information includes at least one of the following: antenna port information of the terminal device; indication information of the first antenna switching scheme; indication information of the second antenna switching scheme; indication information of the AI model.

[0132] In some embodiments, the antenna port information of the terminal device includes at least one of the following: a number of antenna port groups of the terminal device; an activated antenna port group of the terminal device; a closed antenna port group of the terminal device; index information of an antenna port used by the terminal device to send the uplink reference signal.

[0133] In some embodiments, when the configuration information is determined based on the second information, the M is the same as the number of antenna port groups of the terminal device; or, the M is the same as the number of activated antenna port groups of the terminal device; or, a total of N uplink reference signal resources are included in the M resource sets, a number of transmission antennas x of each of the N uplink reference signal resources is the number of transmission antennas of the terminal device corresponding to the first antenna switching scheme, the x transmission antennas of each uplink reference signal resource are associated with different x reception antennas of the terminal device, a total number of reception antennas associated with the N uplink reference signal resources is the number of reception antennas of the terminal device corresponding to the first antenna switching scheme, N is a positive integer, and x is a positive integer.

[0134] In some embodiments, the AI model is trained by the terminal device or the network device.

[0135] In some embodiments, the AI model is trained for the number of reception antennas supported by the terminal device; or, the AI model is trained for a combination of the number of reception antennas supported by the terminal device and the number of reception antennas actually used by the terminal device.

[0136] In some embodiments, the sending module is further configured to send one or more uplink reference signals according to the configuration information.

[0137] In some embodiments, the uplink reference signal is an SRS.

[0138] Please refer to FIG. 9, which shows a block diagram of a resource configuration apparatus provided by another embodiment of the present application. The apparatus has the functions of implementing the above-mentioned resource configuration method, which can be implemented by hardware, or by executing corresponding software by hardware. The apparatus can be the network device introduced above, or can be arranged in the network device. As shown in FIG. 9, the apparatus 900 can include a sending module 910.

[0139] The sending module 910 is configured to send configuration information to a terminal device, the configuration information being used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets including one or more uplink reference signal resources, wherein the number of reception antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of reception antennas supported by the terminal device, and the M is a positive integer.

[0140] In some embodiments, an association relationship between the resource set and the antenna port group of the terminal device is predefined, and / or an association relationship between the uplink reference signal resource and the antenna port of the terminal device is predefined.

[0141] In some embodiments, one set of resources corresponds to one set of antenna ports of the terminal device, and / or one uplink reference signal resource corresponds to one or more antenna ports of the terminal device.

[0142] In some embodiments, the index of the uplink reference signal resource is associated with the index of the antenna port in sequence; in the case that one uplink reference signal resource corresponds to one antenna port of the terminal device, the index of one uplink reference signal resource is associated with the index of one antenna port; or in the case that one uplink reference signal resource corresponds to multiple antenna ports of the terminal device, the index of one uplink reference signal resource is associated with the index of multiple antenna ports.

[0143] In some embodiments, the sending module 910 is further configured to send first information to the terminal device, the first information being used to indicate that an AI model is applied to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein the number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is the number of receiving antennas supported by the terminal device.

[0144] In some embodiments, the first information is carried in RRC signaling, or MAC CE, or DCI.

[0145] In some embodiments, the apparatus 900 further includes a receiving module (not shown in FIG. 9).

[0146] The receiving module is configured to receive capability information sent by the terminal device, the capability information being used to indicate at least one of the following: a second antenna switching capability supported by the terminal device, a first antenna switching capability expected by the terminal device; wherein the number of receiving antennas corresponding to the first antenna switching capability is less than the number of receiving antennas corresponding to the second antenna switching capability.

[0147] In some embodiments, the receiving module is further configured to receive second information sent by the terminal device, the second information being used to determine an AI model and / or the configuration information, the AI model being used to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein the number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is the number of receiving antennas supported by the terminal device.

[0148] In some embodiments, the second information includes at least one of the following: antenna port information of the terminal device; indication information of the first antenna switching scheme; indication information of the second antenna switching scheme; and indication information of the AI model.

[0149] In some embodiments, the antenna port information of the terminal device comprises at least one of: a number of antenna port groups of the terminal device; an activated antenna port group of the terminal device; a closed antenna port group of the terminal device; and index information of an antenna port used by the terminal device to send the uplink reference signal.

[0150] In some embodiments, when the configuration information is determined based on the second information, the M is the same as the number of antenna port groups of the terminal device; or the M is the same as the number of activated antenna port groups of the terminal device; or a total of N uplink reference signal resources are included in the M resource sets, a number of transmission antennas x of each of the N uplink reference signal resources is the number of transmission antennas of the terminal device corresponding to the first antenna switching scheme, x transmission antennas of each of the N uplink reference signal resources are associated with different x reception antennas of the terminal device, a total number of reception antennas associated with the N uplink reference signal resources is the number of reception antennas of the terminal device corresponding to the first antenna switching scheme, N is a positive integer, and x is a positive integer.

[0151] In some embodiments, the AI model is trained by the terminal device or the network device.

[0152] In some embodiments, the AI model is trained for a number of reception antennas supported by the terminal device; or the AI model is trained for a combination of the number of reception antennas supported by the terminal device and a number of reception antennas actually used by the terminal device.

[0153] In some embodiments, the receiving module is further configured to receive one or more uplink reference signals sent by the terminal device according to the configuration information.

[0154] In some embodiments, the uplink reference signal is an SRS.

[0155] Referring to FIG. 10, a structural schematic diagram of a communication device is shown according to an embodiment of the present application. The communication device 1000 can include a processor 1001, a transceiver 1002, and a memory 1003. The transceiver 1002 is configured to implement a sending and receiving function, such as the functions of the sending module and the receiving module described above. The processor can be configured to implement other processing functions or control the sending and / or receiving.

[0156] The processor 1001 includes one or more processing cores. The processor 1001 performs various functional applications and information processing by running software programs and modules.

[0157] The transceiver 1002 can include a receiver and a transmitter, which can be implemented as a same wireless communication component, and can include a wireless communication chip and a radio frequency antenna.

[0158] The memory 1003 can be connected with the processor 1001 and the transceiver 1002.

[0159] The memory 1003 can be used to store a computer program executed by the processor 1001.

[0160] In some embodiments, when the communication device is a terminal device, the transceiver 1002 is configured to receive configuration information, the configuration information being used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets including one or more uplink reference signal resources, wherein the first antenna switching scheme corresponds to a number of receive antennas of the terminal device being less than a number of receive antennas supported by the terminal device, and M is a positive integer.

[0161] In some embodiments, when the communication device is a network device, the transceiver 1002 is configured to send configuration information to a terminal device, the configuration information being used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets including one or more uplink reference signal resources, wherein the first antenna switching scheme corresponds to a number of receive antennas of the terminal device being less than a number of receive antennas supported by the terminal device, and M is a positive integer.

[0162] For details not described in the present embodiment, refer to the above embodiments, which will not be repeated here.

[0163] In addition, the memory can be implemented by any type of volatile or nonvolatile storage devices or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memories, erasable programmable read-only memories, static random access memories, read-only memories, magnetic memories, flash memories, programmable read-only memories.

[0164] The embodiment of the present application further provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor to implement the resource configuration method. In some embodiments, the computer readable storage medium can include a ROM (Read-Only Memory), a RAM (Random-Access Memory), a SSD (Solid State Drives) or an optical disc, and the like. The random access memory can include a ReRAM (Resistance Random Access Memory) and a DRAM (Dynamic Random Access Memory).

[0165] The embodiment of the present application further provides a chip, wherein the chip includes a programmable logic circuit and / or program instructions, and when the chip is running, the chip is used for implementing the resource configuration method.

[0166] The embodiment of the present application further provides a computer program product, wherein the computer program product includes computer instructions, the computer instructions are stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the resource configuration method.

[0167] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, or indirect indication, or can be an indication of an associated relationship. For example, A indicates B, which can mean that B can be obtained by A directly; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0168] In the description of the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or can mean that there is an associated relationship between the two, or can mean an indication and being indicated, configuration and being configured, and the like.

[0169] In some embodiments of the present application, "predefined" can be implemented by pre-storing corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner thereof. For example, predefined can mean defined in a protocol.

[0170] In some embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include an LTE protocol, an NR protocol and a related protocol applied to a future communication system, and the present application does not limit the same.

[0171] The "multiple" mentioned in the present text refers to two or more. The "and / or" describes the association between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0172] The "greater than or equal to" mentioned in the present text can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0173] In addition, the step numbers described in the present text only exemplarily show a possible execution order between steps, and in some other embodiments, the above steps can also be executed in a sequence different from the number, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in an order opposite to the illustration, which is not limited by the embodiments of the present application.

[0174] Those skilled in the art should be aware that in one or more of the examples described above, the functions described in the embodiments of the present application can be implemented by hardware, software, firmware or any combination thereof. When implemented by software, these functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, wherein the communication medium includes any medium that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general or special purpose computer.

[0175] The above is only an exemplary embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A resource configuration method, characterized by, The method is performed by a terminal device, and the method comprises: receiving configuration information, the configuration information being used for configuring M resource sets related to a first antenna switching scheme, each of the M resource sets comprising one or more uplink reference signal resources, wherein the first antenna switching scheme corresponds to a number of receive antennas of the terminal device being less than a number of receive antennas supported by the terminal device, and M is a positive integer.

2. The method of claim 1, wherein, An association relationship between the resource sets and antenna port groups of the terminal device is predefined, and / or an association relationship between the uplink reference signal resources and antenna ports of the terminal device is predefined.

3. The method according to claim 1 or 2, characterized in that, One resource set corresponds to one antenna port group of the terminal device, and / or one uplink reference signal resource corresponds to one or more antenna ports of the terminal device.

4. The method of claim 3, wherein, Indices of the uplink reference signal resources are sequentially associated with indices of the antenna ports. In a case where one uplink reference signal resource corresponds to one antenna port of the terminal device, an index of one uplink reference signal resource is associated with an index of one antenna port. Or, In a case where one uplink reference signal resource corresponds to a plurality of antenna ports of the terminal device, an index of one uplink reference signal resource is associated with indices of the plurality of antenna ports.

5. The method according to any one of claims 1 to 4, characterized in that, The method further comprises: receiving first information, the first information being used for indicating an application of an artificial intelligence (AI) model to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein the second antenna switching scheme corresponds to a number of receive antennas of the terminal device being the number of receive antennas supported by the terminal device.

6. The method of claim 5, wherein, The first information is carried in radio resource control (RRC) signaling, medium access control (MAC) control element (CE), or downlink control information (DCI).

7. The method according to any one of claims 1 to 6, characterized in that, Before the receiving of the configuration information, the method further comprises: sending capability information, the capability information being used for indicating at least one of the following: a second antenna switching capability supported by the terminal device, and a first antenna switching capability expected by the terminal device, wherein the first antenna switching capability corresponds to a number of receive antennas being less than a number of receive antennas corresponding to the second antenna switching capability.

8. The method according to any one of claims 1 to 7, characterized in that, The method further comprises: sending second information, the second information being used for determining an AI model and / or the configuration information, the AI model being used for determining downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein the second antenna switching scheme corresponds to a number of receive antennas of the terminal device being the number of receive antennas supported by the terminal device.

9. The method of claim 8, wherein, The second information comprises at least one of the following: antenna port information of the terminal device; indication information of the first antenna switching scheme; indication information of the second antenna switching scheme; indication information of the AI model.

10. The method of claim 9, wherein, The antenna port information of the terminal device comprises at least one of the following: a number of antenna port groups of the terminal device; an activated antenna port group of the terminal device; a closed antenna port group of the terminal device; index information of an antenna port of the terminal device used for sending the uplink reference signal.

11. The method according to any one of claims 8 to 10, characterized in that, In a case where the configuration information is determined based on the second information, The M is the same as a number of antenna port groups of the terminal device; or, The M is the same as a number of activated antenna port groups of the terminal device. Or, The M resource sets collectively include N uplink reference signal resources, a number x of transmission antennas of each of the N uplink reference signal resources is a number of transmission antennas of the terminal device corresponding to the first antenna switching scheme, the x transmission antennas of each uplink reference signal resource are associated with different x reception antennas of the terminal device, a total number of reception antennas associated with the N uplink reference signal resources is a number of reception antennas of the terminal device corresponding to the first antenna switching scheme, N is a positive integer, and x is a positive integer.

12. The method according to any one of claims 5 to 6, 8 to 11, characterized in that, The AI model is trained by the terminal device or a network device.

13. The method according to any one of claims 5 to 6, 8 to 12, characterized in that, The AI model is trained for a number of reception antennas supported by the terminal device; or, the AI model is trained for a combination of the number of reception antennas supported by the terminal device and a number of reception antennas actually used by the terminal device.

14. The method according to any one of claims 1 to 13, characterized in that, The method further includes: According to the configuration information, one or more uplink reference signals are transmitted.

15. The method according to any one of claims 1 to 14, characterized in that, The uplink reference signal is a sounding reference signal (SRS).

16. A resource configuration method, comprising: The method is performed by a network device, and the method includes: Sends configuration information to a terminal device, the configuration information is used to configure M resource sets related to a first antenna switching scheme, each of the M resource sets includes one or more uplink reference signal resources, wherein the number of reception antennas of the terminal device corresponding to the first antenna switching scheme is less than the number of reception antennas supported by the terminal device, and M is a positive integer.

17. The method of claim 16, wherein, The association relationship between the resource set and the antenna port group of the terminal device is predefined, and / or the association relationship between the uplink reference signal resource and the antenna port of the terminal device is predefined.

18. The method of claim 16 or 17, wherein, One resource set corresponds to one antenna port group of the terminal device, and / or one uplink reference signal resource corresponds to one or more antenna ports of the terminal device.

19. The method of claim 18, wherein, The index of the uplink reference signal resource is associated with the index of the antenna port in sequence; In a case where one uplink reference signal resource corresponds to one antenna port of the terminal device, the index of one uplink reference signal resource is associated with the index of one antenna port; Or, In a case where one uplink reference signal resource corresponds to multiple antenna ports of the terminal device, the index of one uplink reference signal resource is associated with the index of multiple antenna ports.

20. The method according to any one of claims 16 to 19, characterized in that, The method further includes: Sends first information to the terminal device, the first information is used to indicate that an artificial intelligence (AI) model is applied to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein the number of reception antennas of the terminal device corresponding to the second antenna switching scheme is the number of reception antennas supported by the terminal device.

21. The method of claim 20, wherein, The first information is carried in radio resource control (RRC) signaling, a medium access control (MAC) control element (CE), or downlink control information (DCI).

22. The method according to any one of claims 16 to 21, characterized in that, Before the sending of the configuration information to the terminal device, the method further includes: receiving capability information sent by the terminal device, the capability information being used to indicate at least one of the following: a second antenna switching capability supported by the terminal device, and a first antenna switching capability expected by the terminal device; wherein the number of receiving antennas corresponding to the first antenna switching capability is less than the number of receiving antennas corresponding to the second antenna switching capability.

23. The method according to any one of claims 16 to 22, characterized in that, The method further includes: receiving second information sent by the terminal device, the second information being used to determine an AI model and / or the configuration information, the AI model being used to determine downlink channel state information corresponding to a second antenna switching scheme based on the first antenna switching scheme, wherein the number of receiving antennas of the terminal device corresponding to the second antenna switching scheme is the number of receiving antennas supported by the terminal device.

24. The method of claim 23, wherein, The second information includes at least one of the following: antenna port information of the terminal device; indication information of the first antenna switching scheme; indication information of the second antenna switching scheme; indication information of the AI model.

25. The method of claim 24, wherein, The antenna port information of the terminal device includes at least one of the following: the number of antenna port groups of the terminal device; an activated antenna port group of the terminal device; a closed antenna port group of the terminal device; index information of an antenna port used by the terminal device to send the uplink reference signal.

26. The method of any one of claims 23 to 25, wherein, In a case where the configuration information is determined based on the second information, the M is the same as the number of antenna port groups of the terminal device; or the M is the same as the number of activated antenna port groups of the terminal device; or a total of N uplink reference signal resources are included in the M resource sets, the number of transmitting antennas x of each of the N uplink reference signal resources is the number of transmitting antennas of the terminal device corresponding to the first antenna switching scheme, the x transmitting antennas of each uplink reference signal resource are associated with different x receiving antennas of the terminal device, the total number of receiving antennas associated with the N uplink reference signal resources is the number of receiving antennas of the terminal device corresponding to the first antenna switching scheme, N is a positive integer, and x is a positive integer.

27. The method of any one of claims 20-21, 23-26, wherein, The AI model is trained by the terminal device or the network device.

28. The method of any one of claims 20-21, 23-27, wherein, The AI model is trained for the number of receiving antennas supported by the terminal device; or the AI model is trained for a combination of the number of receiving antennas supported by the terminal device and the number of receiving antennas actually used by the terminal device.

29. The method according to any one of claims 16 to 28, characterized in that, The method further includes: receiving one or more uplink reference signals sent by the terminal device according to the configuration information.

30. The method of any one of claims 16 to 29, wherein, The uplink reference signal is a sounding reference signal (SRS).

31. A resource configuration apparatus, comprising: The apparatus includes: The receiving module is configured to receive configuration information, the configuration information being used for configuring M resource sets related to a first antenna switching scheme, each of the M resource sets comprising one or more uplink reference signal resources, wherein the first antenna switching scheme corresponds to a number of receive antennas of a terminal device being less than a number of receive antennas supported by the terminal device, and M is a positive integer.

32. A resource configuration apparatus, comprising: The apparatus comprises: The sending module is configured to send configuration information to a terminal device, the configuration information being used for configuring M resource sets related to a first antenna switching scheme, each of the M resource sets comprising one or more uplink reference signal resources, wherein the first antenna switching scheme corresponds to a number of receive antennas of the terminal device being less than a number of receive antennas supported by the terminal device, and M is a positive integer.

33. A communications device, characterized by The computer device comprises a processor and a memory, and the memory stores a computer program, and the processor executes the computer program to implement the method according to any one of claims 1 to 15, or to implement the method according to any one of claims 16 to 30.

34. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program is used for being executed by a processor to implement the method according to any one of claims 1 to 15, or to implement the method according to any one of claims 16 to 30.

35. A chip, comprising: The chip comprises a programmable logic circuit and / or program instructions, and when the chip is running, the programmable logic circuit and / or program instructions are used to implement the method according to any one of claims 1 to 15, or to implement the method according to any one of claims 16 to 30.

36. A computer program product, characterised in that, The computer program product comprises computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the method according to any one of claims 1 to 15, or to implement the method according to any one of claims 16 to 30.

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