A signal receiving method, a signal sending method, and corresponding devices

Abstract

Embodiments of the present application provide a signal receiving method, a transmitting method, and corresponding devices, which are used to improve the downlink signal receiving performance in the case of antenna port and / or beam switching of a terminal device. The method includes: the terminal device receives indication information from a network device, where the indication information is used to indicate at least one SRS resource, and the at least one SRS resource corresponds to a receiving antenna used by the terminal device to receive a downlink signal; the terminal device uses the receiving antenna corresponding to the at least one SRS resource to receive a downlink signal from the network device. The network device indicating the receiving antenna for the terminal device can avoid problems such as the inability to receive downlink signals during the switching time and the degradation of receiving performance after switching due to switching the receiving antenna port when the terminal device selects a receiving antenna, thereby improving the downlink signal receiving performance.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a signal receiving method, a sending method, and corresponding devices. Background Art

[0002] Compared with long term evolution (LTE) and long term evolution advanced (LTE-A) wireless communication systems, the deployment frequency band of the new radio (NR) wireless communication system of the fifth generation mobile communication technology (5G) is higher to obtain a larger communication bandwidth. As the communication frequency increases, the size of the antenna can be further reduced. Under the condition of the same antenna panel area, the number of antenna elements of NR is much larger than that of LTE and LTE-A, which helps to obtain diversity gain and achieve spatial multiplexing, thereby further improving the spectral efficiency of NR. th With the increase in the number of antenna elements, the number of radio frequency (RF) links also increases linearly. The RF links include expensive digital-to-analog / analog-to-digital converters, etc. Therefore, the increase in the number of antenna elements requires high costs and energy consumption expenditures. Therefore, the number of RF channels of most NR terminal devices is less than the actual number of antenna ports. Among them, one antenna port can perform digital beamforming (DBF) with a ratio of 1 to 1, or perform analog beamforming (ABF) with a ratio of 1 to X, where X>1. To make full use of these antennas, most NR terminal devices can support the selection function of receiving antennas and / or receiving ABF beams, thereby maximizing the receiving performance of NR terminal devices.

[0003] Currently, the measurement, selection, and switching of the antenna ports and / or beams of the terminal device are all implemented on the terminal device side. First, the network device sends a channel state information-reference signal (CSI-RS) to the terminal device. The terminal device measures the channel information of all antenna ports and / or beams based on the CSI-RS. Then, the terminal device selects a set of antenna ports and / or beams with the best receiving performance as the receiving antenna ports and / or receiving beams of the terminal device according to the measurement results of all antenna ports and / or beams.

[0004] Since the actual number of antenna ports of the terminal device is usually more than the number of receiving antenna ports (i.e., the number of receiving RF channels), the terminal device can only measure the channel information of some antenna ports and / or beams at a time. For example, see

[0005] Figure 1 ​, the terminal device has 8 antenna ports, but only 4 radio frequency receiving channels. Therefore, the terminal device can measure the channel information of at most 4 antenna ports and / or the channel information of the beams on these 4 antenna ports at a time. To complete the measurement of the channel information of all antenna ports and / or beams, the terminal device needs to switch the antenna ports and / or beams.

[0006] However, the switching of the antenna ports and / or beams of the terminal device takes a long time. During this switching time, the terminal device cannot receive downlink signals, and the channel may change severely after the switching of the antenna ports and / or beams of the terminal device, resulting in a sharp decline in the receiving performance of the terminal device. Summary of the Invention

[0007] Embodiments of the present application provide a signal receiving method, a signal sending method, and corresponding devices, which are used to improve the downlink signal receiving performance in the case of switching antenna ports and / or beams of a terminal device.

[0008] In a first aspect, a signal receiving method is provided, including: the terminal device receives indication information from a network device, where the indication information is used to indicate at least one channel sounding reference signal (SRS) resource, and the at least one SRS resource corresponds to the receiving antenna used by the terminal device to receive downlink signals; the terminal device uses the receiving antenna corresponding to the at least one SRS resource to receive the downlink signal from the network device.

[0009] In the embodiments of the present application, the network device indicates the receiving antenna (including antenna ports and / or beams) for the terminal device, which can avoid problems such as the inability to receive downlink signals during the switching time and the decline in receiving performance after switching caused by the terminal device switching the receiving antenna ports in the prior art, thereby improving the downlink spectrum efficiency.

[0010] In a possible implementation manner, the at least one SRS resource corresponding to the receiving antenna used by the terminal device to receive downlink signals includes: the at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, where each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each first SRS port is associated with an antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each second SRS port is associated with at least two antenna ports.

[0011] In this embodiment, the network device may configure two types of resources for the terminal device, namely, the first SRS resource and the second SRS resource. The network device may select and indicate a receiving antenna port and / or a receiving beam for the terminal device based on the association relationship between the first SRS resource and the antenna port of the terminal device, and the association relationship between the second SRS resource and the antenna port and beam of the terminal device, improving the reliability of the solution.

[0012] In a possible implementation, the terminal device determines a first receiving antenna port according to the first SRS resource in the at least one SRS resource, and determines a second receiving antenna port and a receiving beam according to the second SRS resource in the at least one SRS resource; and receives the downlink signal from the network device by using the determined first receiving antenna port, second receiving antenna port, and receiving beam.

[0013] In this embodiment, based on the association relationship between the first SRS resource and the antenna port of the terminal device, and the association relationship between the second SRS resource and the antenna port and beam of the terminal device, the terminal device can obtain from the indication information the first receiving antenna port, second receiving antenna port, and receiving beam selected by the network device for it, and then receive the downlink signal from the network device based on the first receiving antenna port, second receiving antenna port, and receiving beam, improving the reliability of the solution.

[0014] In a possible implementation, each second SRS port is associated with at least two antenna ports, including: each first SRS port is associated with one antenna port, each second SRS port corresponds to a plurality of first SRS ports, and different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located.

[0015] In this embodiment, since one second SRS port corresponds to a plurality of first SRS ports, and one first SRS port is associated with an actual physical antenna port, one second SRS port is indirectly associated with a plurality of physical antenna ports. By associating the second SRS port of the second SRS resource with the first SRS port of the first SRS resource, the technical effect of associating the second SRS resource with a plurality of actual physical antenna ports is achieved. And different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located, realizing the effect of configuring ABF beams based on a plurality of physical antenna ports.

[0016] In a possible implementation, the terminal device may also send SRS according to at least one first SRS resource and at least one second SRS resource, where the indication information is generated by the network device based on the SRS; the at least one first SRS resource and / or the at least one second SRS resource are configured by the network device.

[0017] In this implementation, the terminal device sends SRS according to at least one first SRS resource and at least one second SRS resource, enabling the network device to test the reception performance of each antenna port and / or beam based on these SRSs, and then select a receiving antenna port and / or a receiving beam for the terminal device based on the test results, and generate indication information based on the SRS resources corresponding to the receiving antenna port and / or the receiving beam, ensuring the reliability of the solution.

[0018] In a possible implementation, the indication information includes: the SRS resource identifier ID of the SRS resource corresponding to the receiving antenna, and the SRS port ID.

[0019] In this implementation, the indication information carries the SRS resource information of the receiving antenna port and / or the receiving beam, with little modification to the protocol, and the receiving antenna port and / or the receiving beam selected by the network device have excellent performance.

[0020] In a possible implementation, the indication information includes: the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the receiving antenna in a first subset; the first subset includes: the SRS resource ID, the SRS port ID of the SRS resource corresponding to each receiving antenna combination in multiple receiving antenna combinations, and the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination; wherein, the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination is unique in the first subset.

[0021] In this implementation, the indication information carries the index information of the receiving antenna port and / or the receiving beam, with low signaling design overhead and low computational complexity for the network device to select the receiving antenna port and / or the receiving beam.

[0022] In a possible implementation, the first subset is a proper subset of the universal set composed of all possible receiving antenna combinations of the terminal device, and the reception performance of each receiving antenna combination in the first subset meets a preset condition.

[0023] In this embodiment, it can be ensured that the receiving performance of the receiving antennas and / or receiving beams selected by the network device in the first subset must meet the preset conditions. At the same time, it can be ensured that the number of combinations of receiving antennas to be selected in the first subset is small, which can improve the efficiency of the network device to select receiving antenna ports and / or receiving beams for the terminal device.

[0024] In a possible implementation manner, before the terminal device receives the indication information from the network device, the terminal device may further send the antenna information of the terminal device to the network device. The antenna information corresponds to the first subset, and the first subset is one of multiple subsets, and the multiple subsets correspond to different antenna information.

[0025] In this embodiment, the network device may select the first subset corresponding to the antenna information of the terminal device according to the antenna information reported by the terminal device, and select receiving antennas and / or receiving beams in the first subset, which can ensure that the receiving antennas and / or receiving beams selected by the network device for the terminal device match the antenna information of the terminal device, and better ensure the receiving performance of the terminal device.

[0026] In a possible implementation manner, the antenna information includes one or more of the following items: the number of transmitting radio frequency channels, the number of receiving radio frequency channels, the total number of antenna ports, and the number of analog beams; wherein, one analog beam is generated by at least two antenna ports.

[0027] In a possible implementation manner, the indication information is carried by a MAC CE or DCI.

[0028] In a second aspect, a signal sending method is provided, including: the network device sends indication information to the terminal device, and the indication information is used to indicate at least one channel sounding reference signal (SRS) resource, and the at least one SRS resource corresponds to the receiving antenna used by the terminal device to receive the downlink signal; the network device sends a downlink signal to the terminal device.

[0029] In a possible implementation manner, the at least one SRS resource corresponds to the receiving antenna used by the terminal device to receive the downlink signal, including: the at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, wherein each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each first SRS port is associated with one antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each second SRS port is associated with at least two antenna ports.

[0030] In one possible implementation, the network device can also determine a first SRS resource corresponding to the first receiving antenna port of the terminal device, and a second SRS resource corresponding to the second receiving antenna port and the receiving beam of the terminal device; the network device generates the indication information based on the first SRS resource corresponding to the first receiving antenna port of the terminal device, and the second SRS resource corresponding to the second receiving antenna port and the receiving beam of the terminal device.

[0031] In one possible implementation, each second SRS port is associated with at least two antenna ports, including: each first SRS port is associated with one antenna port, each second SRS port corresponds to multiple first SRS ports, and the second SRS resources corresponding to the multiple second SRS ports of the same first SRS port are configured with different spatial relationship information.

[0032] In one possible implementation, the network device can also receive the SRS sent by the terminal device based on at least one first SRS resource and at least one second SRS resource, wherein the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device and the receiving beam are determined by the network device based on the SRS; and the at least one first SRS resource and the at least one second SRS resource are configured by the network device.

[0033] In a possible implementation manner, the indication information includes: an SRS resource identifier ID and an SRS port ID of the SRS resource corresponding to the receiving antenna.

[0034] In one possible implementation, the indication information includes: the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the receiving antenna in the first subset; the first subset includes: the SRS resource ID and SRS port ID of the SRS resource corresponding to each receiving antenna combination in multiple receiving antenna combinations, and the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination; wherein the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination is unique in the first subset.

[0035] In one possible implementation, the first subset is a true subset of the full set consisting of all possible receiving antenna combinations of the terminal device, and the receiving performance of each receiving antenna combination in the first subset meets a preset condition.

[0036] In a possible implementation, before the network device generates the indication information, the network device receives antenna information from the terminal device. The antenna information corresponds to the first subset, and the first subset is one of multiple subsets, where the multiple subsets correspond to different antenna information.

[0037] In a possible implementation, the antenna information includes one or more of the following: the number of transmit RF channels, the number of receive RF channels, the total number of antenna ports, the number of analog beams; where one analog beam is generated by at least two antenna ports.

[0038] In a possible implementation, the indication information is carried by a MAC CE or DCI.

[0039] In a third aspect, a signal receiving device is provided. The device can be a terminal device or a device on the terminal device. The device includes a module for performing the method described in the first aspect or any possible implementation manner of the first aspect.

[0040] Exemplarily, the device may include: a receiving module, configured to receive indication information from the network device, where the indication information is used to indicate at least one channel sounding reference signal (SRS) resource, and the at least one SRS resource corresponds to the receiving antenna used by the device to receive the downlink signal; a processing module, configured to control the receiving module to receive the downlink signal from the network device using the receiving antenna corresponding to the at least one SRS resource.

[0041] In a possible implementation, that the at least one SRS resource corresponds to the receiving antenna used by the device to receive the downlink signal may include: the at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, where each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each first SRS port is associated with one antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each second SRS port is associated with at least two antenna ports.

[0042] In a possible implementation, the processing module is specifically configured to: determine a first receiving antenna port according to the first SRS resource in the at least one SRS resource, determine a second receiving antenna port and a receiving beam according to the second SRS resource in the at least one SRS resource; control the receiving module to receive the downlink signal from the network device using the determined first receiving antenna port, second receiving antenna port, and receiving beam.

[0043] In a possible implementation manner, each of the second SRS ports is associated with at least two antenna ports, which may include: each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located.

[0044] In a possible implementation manner, the apparatus may further include: a sending module, configured to send SRS according to at least one first SRS resource and at least one second SRS resource, where the indication information is generated by the network device based on the SRS; the at least one first SRS resource and / or the at least one second SRS resource is configured by the network device.

[0045] In a possible implementation manner, the indication information may include: an index value of a combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the receiving antenna in a first subset; the first subset may include: the SRS resource ID, the SRS port ID of the SRS resources corresponding to each receiving antenna combination in a plurality of receiving antenna combinations, and the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resources corresponding to each receiving antenna combination; where the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination is unique in the first subset.

[0046] In a possible implementation manner, the apparatus may further include: a sending module, configured to send the antenna information of the apparatus to the network device before the receiving module receives the indication information from the network device, where the antenna information corresponds to the first subset, and the first subset is one of a plurality of subsets, and different antenna information corresponds to the plurality of subsets.

[0047] In a possible implementation manner, the antenna information may include one or more of the following items: the number of transmit RF channels, the number of receive RF channels, the total number of antenna ports, the number of analog beams; where one analog beam is generated by at least two antenna ports.

[0048] In a fourth aspect, a signal sending apparatus is provided. The apparatus may be a network device or a device on the network device, and the apparatus may include a module for performing the method described in the second aspect or any possible implementation manner of the second aspect.

[0049] Exemplarily, the apparatus may include: a processing module, configured to generate indication information; the indication information is used to indicate at least one channel sounding reference signal (SRS) resource, and the at least one SRS resource corresponds to a receiving antenna used by the terminal device to receive a downlink signal; a transmitting module, configured to send the indication information to the terminal device, and send a downlink signal to the terminal device.

[0050] In a possible implementation manner, the at least one SRS resource corresponding to the receiving antenna used by the terminal device to receive a downlink signal may include: the at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, where each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with one antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports.

[0051] In a possible implementation manner, the processing module is configured to: determine a first SRS resource corresponding to a first receiving antenna port of the terminal device, and a second SRS resource corresponding to a second receiving antenna port and a receiving beam of the terminal device; generate the indication information according to the first SRS resource corresponding to the first receiving antenna port of the terminal device, and the second SRS resource corresponding to the second receiving antenna port and the receiving beam of the terminal device.

[0052] In a possible implementation manner, each of the second SRS ports being associated with at least two antenna ports may include: each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located.

[0053] In a possible implementation manner, the apparatus may further include: a receiving module, configured to receive SRSs sent by the terminal device according to at least one first SRS resource and at least one second SRS resource, where the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device, and the receiving beam are determined by the apparatus according to the SRSs; the at least one first SRS resource and the at least one second SRS resource are configured by the apparatus.

[0054] In a possible implementation, the indication information may include: an index value of a combination of an SRS resource ID and an SRS port ID of an SRS resource corresponding to the receiving antenna in a first subset; the first subset may include: SRS resource IDs, SRS port IDs of SRS resources corresponding to each receiving antenna combination in a plurality of receiving antenna combinations, and index values of combinations of SRS resource IDs and SRS port IDs of SRS resources corresponding to each receiving antenna combination; wherein, the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination is unique in the first subset.

[0055] In a possible implementation, the apparatus may further include: a receiving module, configured to receive antenna information from the terminal device before the processing module generates the indication information, the antenna information corresponding to the first subset, and the first subset is one of a plurality of subsets, and the plurality of subsets correspond to different antenna information.

[0056] In a possible implementation, the antenna information may include one or more of the following: the number of transmit radio frequency channels, the number of receive radio frequency channels, the total number of antenna ports, the number of analog beams; wherein, one analog beam is generated by at least two antenna ports.

[0057] In a fifth aspect, there is provided a communication apparatus, including: at least one processor; and a memory and a communication interface communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the at least one processor, by executing the instructions stored in the memory, causes the apparatus to execute the method according to the first aspect or any optional implementation manner of the first aspect or the second aspect or any optional implementation manner of the second aspect.

[0058] In a sixth aspect, there is provided a computer-readable storage medium, including a program or instructions, which, when running on a computer, causes the method according to the first aspect or any optional implementation manner of the first aspect or the second aspect or any optional implementation manner of the second aspect to be executed.

[0059] In a seventh aspect, there is provided a computer program product, which, when running on a computer, causes the method according to the first aspect or any optional implementation manner of the first aspect or the second aspect or any optional implementation manner of the second aspect to be executed.

[0060] In an eighth aspect, there is provided a chip, coupled to a memory, for reading and executing program instructions stored in the memory to implement the method according to the first aspect or any optional implementation manner of the first aspect or the second aspect or any optional implementation manner of the second aspect.

[0061] For the beneficial effects of the embodiments in the second to eighth aspects above, refer to the beneficial effects of the corresponding embodiments in the first aspect, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic diagram of the switching of antenna ports and / or beams of a terminal device in the prior art;

[0063] Figure 2 It is a schematic diagram of the network architecture of a communication system provided by an embodiment of the present application;

[0064] Figure 3 It is a flowchart of a signal receiving method and a sending method provided by an embodiment of the present application;

[0065] Figure 4 It is a flowchart of a method for selecting antenna ports and beams provided by an embodiment of the present application;

[0066] Figure 5 It is a schematic diagram of a signaling format provided by an embodiment of the present application;

[0067] Figure 6 It is a schematic diagram of an antenna panel provided by an embodiment of the present application;

[0068] Figure 7A It is a schematic diagram of the signaling format of a MAC CE provided by an embodiment of the present application;

[0069] Figure 7B It is a schematic diagram of the signaling format of a DCI provided by an embodiment of the present application;

[0070] Figure 8 It is a schematic diagram of the structure of a signal receiving device 800 provided by an embodiment of the present application;

[0071] Figure 9 It is a schematic diagram of the structure of a signal sending device 900 provided by an embodiment of the present application;

[0072] Figure 10 It is a schematic diagram of the structure of a communication device 1000 provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0073] To solve the problems that a terminal device cannot receive downlink signals during the switching of antenna ports and / or beams, and the receiving performance of the terminal device deteriorates after the switching of antenna ports and / or beams, embodiments of the present application provide a signal receiving method, a sending method, and corresponding devices.

[0074] The technical solutions of the embodiments of this application can be applied to various wireless communication systems, such as: the fifth-generation (5G) system, such as NR, and future communication systems, such as the 6G system, etc. Of course, the technical solutions of the embodiments of this application can also be applied to other communication systems as long as there is a need for antenna port and / or beam selection in the communication system.

[0075] Exemplarily, Figure 2 It is a schematic diagram of the network architecture of a communication system provided by the embodiments of this application. The communication system includes a network device and a terminal device. The network device can send a downlink signal to the terminal device, and the terminal device can receive the downlink signal sent by the network device. Of course, the terminal device can send an uplink signal to the network device, and the network device can receive the uplink signal sent by the terminal device.

[0076] In the embodiments of this application, the network device can configure sounding reference signal (SRS) resources for the terminal device. These SRS resources have a clear association with the antenna ports and / or beams of the terminal device. The terminal device sends SRS on each antenna port and / or beam based on the SRS resources configured by the network device. The network device obtains the transmission performance of each antenna port and / or beam by measuring these SRS of the terminal device, and then determines the reception performance of each antenna port and / or beam by using the correlation or reciprocity between the uplink channel and the downlink channel. Furthermore, the network device determines the antenna ports and / or beams whose reception performance meets the preset conditions as the receiving antenna ports and / or receiving beams of the terminal device, and finally notifies the determined receiving antenna ports and / or receiving beams to the terminal device through signaling. After receiving the signaling, the terminal device determines the receiving antenna ports and / or receiving beams according to the signaling, and receives the downlink signal from the network device based on the receiving antenna ports and / or receiving beams.

[0077] Since the terminal device in the embodiments of this application only needs to switch the transmit antenna ports and / or transmit beams to send SRS, instead of switching the receive antenna ports and / or receive beams to receive CSI-RS, it can complete the measurement of the downlink channel information. Therefore, it can effectively avoid problems such as the terminal device being unable to receive the downlink signal during the switching time and the reception performance decreasing after switching due to the receive antenna switching, thereby improving the downlink spectrum efficiency. Moreover, since the uplink transmission is controllable for the terminal device, when the terminal device switches the transmit antenna ports and / or transmit beams, it can control and avoid the impact on the uplink transmission, that is, ensure the transmission performance of the terminal device at the same time.

[0078] Next, with reference to the accompanying drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. To make the embodiments of the present application clearer, the following will further provide a unified introduction to some content and concepts related to the embodiments of the present application here.

[0079] 1) A terminal device, also known as a terminal, is an entity on the user side that is used to receive or transmit signals, used to send uplink signals to a network device or receive downlink signals from a network device. It includes devices that provide voice and / or data connectivity to users, such as handheld devices with wireless connection capabilities or processing devices connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal device can include user equipment (UE), V2X terminal device, wireless terminal device, mobile terminal device, device-to-device (D2D) terminal device, machine-to-machine / machine-type communications (M2M / MTC) terminal device, internet of things (IoT) terminal device, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user device, etc. For example, it can include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, or computer-integrated mobile devices, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), etc. It also includes restricted devices, such as devices with lower power consumption, or limited storage capacity, or limited computing capacity, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners, etc.

[0080] By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. A wearable device may also be referred to as a wearable intelligent device or a smart wearable device, etc. It is a general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions, large sizes, and can realize complete or partial functions without relying on a smartphone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones, such as various smart bracelets for vital sign monitoring, smart helmets, smart jewelry, etc.

[0081] And for the various terminal devices introduced above, if they are located on a vehicle (for example, placed inside the vehicle or installed inside the vehicle), they can all be considered in-vehicle terminal devices. In-vehicle terminal devices are also referred to as on-board units (OBUs) for example.

[0082] 2) A network device is used to receive an uplink signal from a terminal device or send a downlink signal to a terminal device. For example, it includes an access network (AN) device, a radio access network (RAN) device. The access network device such as a base station (e.g., an access point) can refer to a device in the access network that communicates with wireless terminal devices through one or more cells over the air interface. The base station can be used to mutually convert the received airframe and Internet Protocol (IP) packets and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The network device can also coordinate the attribute management of the air interface. For example, the network device can include an evolved NodeB (NodeB or eNB or e-NodeB, evolved Node B) in a Long Term Evolution (LTE) system or a Long Term Evolution - Advanced (LTE-A) system, or it can also include a next-generation NodeB (gNB) or a next-generation evolved NodeB (ng-eNB), en-gNB (enhanced next-generation Node B, gNB): an enhanced next-generation base station in a 5th generation (5G) New Radio (NR) system; it can also include a centralized unit (CU) and a distributed unit (DU) in a Cloud Radio Access Network (Cloud RAN) system, or it can also include a relay device. The embodiments of the present application do not limit this.

[0083] In the embodiments of the present application, the network device may further include a core network device, which, for example, includes a network device that processes and forwards signaling and data of users. In a 4G system, a core network device is, for example, a mobility management entity (MME). The MME is a key control node of the access network of the LTE system defined by the 3rd generation partnership project (3GPP) protocol. It is responsible for the location and paging processes of terminal devices in the idle mode, including relaying. Simply put, the MME is a core network device responsible for the signaling processing part. Alternatively, in a 5G system, the core network device includes, for example, core network devices such as an access management network element, a session management network element, or a user plane gateway. The user plane gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW), a packet data network gateway (PGW), or a user plane function entity (UPF).

[0084] 3) SRS resource (SRS resource), which is used to indicate resources such as the time domain, frequency domain, and spatial domain for the terminal to send SRS.

[0085] 4) SRS resource set: A set of SRS resources with the same function and resource type.

[0086] 5) Antenna port: The actual physical antenna port of the terminal device. For example, Figure 1 antenna ports 0 to 7 in

[0087] 6) Receive antenna port: The physical antenna port of the terminal device for receiving signals. The number of receive antenna ports is the same as the number of receive radio frequency channels of the terminal device, cannot exceed the total number of physical antenna ports of the terminal device, and is generally less than the total number of physical antenna ports of the terminal device.

[0088] Correspondingly, the physical antenna port of the terminal device for sending signals is the transmit antenna port, and the number of transmit antenna ports is the same as the number of transmit radio frequency channels of the terminal device, and is generally less than the total number of physical antenna ports of the terminal device.

[0089] 7) SRS port: An antenna port virtualized from an SRS resource, representing the antenna port for transmitting SRS. An SRS resource includes one or more SRS ports; there is a clear correspondence between the SRS port and the antenna port. For example, one SRS port corresponds to one or more actual physical antenna ports.

[0090] 8) Beam: It includes two types, namely analog beamforming (ABF) beam and digital beamforming (DBF) beam.

[0091] In a wireless communication system, the high-frequency wireless signals propagating in the air are basically analog signals, while the devices inside the base station or terminal equipment process digital signals. Therefore, there must be a digital-to-analog converter (DAC) at the signal transmitting end and an analog-to-digital converter (ADC) at the receiving end. The main difference between ABF and DBF lies in that: at the transmitting end of ABF, the signal processing for beamforming is completed after digital-to-analog conversion, that is, it processes analog signals; at the receiving end, the signal processing for beamforming is completed before analog-to-digital conversion, that is, it processes analog signals. While at the transmitting end of DBF, the signal processing for beamforming is completed before digital-to-analog conversion, that is, it processes digital signals; at the receiving end, the signal processing for beamforming is completed after analog-to-digital conversion, that is, it processes digital signals.

[0092] Due to the large number of antennas in 5G NR, to reduce the complexity and power consumption of the antennas, 5G NR generally considers using ABF antennas, or using ABF antennas and DBF antennas simultaneously.

[0093] In the embodiments of this application, the beam transmitted or received by the ABF antenna is called an analog beam or an ABF beam. An analog beam can be generated by one antenna port, or can be generated by combining two or more antenna ports. There is no limitation here.

[0094] It should be understood that in this article, unless otherwise specified, the beams in this article all refer to analog beams.

[0095] 9) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "At least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (item)" or a similar expression thereof refers to any combination of these items, including any combination of single items or plural items. For example, at least one (item) of a, b, or c may represent: a, b, c, a and b, a and c, b and c, or a, b, and c.

[0096] Moreover, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, time sequence, priority, or importance of multiple objects. For example, the first priority criterion and the second priority criterion are only used to distinguish different criteria, rather than indicating differences in the content, priority, or importance of these two criteria, etc.

[0097] In addition, the terms "comprising" and "having" in the embodiments of the present application and the claims and the drawings are not exclusive. For example, a process, method, system, product, or device comprising a series of steps or modules is not limited to the listed steps or modules, and may further include steps or modules not listed.

[0098] As Figure 3 shown, the embodiments of the present application provide a signal receiving method and a sending method, and this method can be applied to Figure 2 the wireless communication system shown. The process of this method is introduced as follows.

[0099] S301. The network device generates indication information, and the indication information is used to indicate at least one channel sounding reference signal (SRS) resource, and at least one SRS resource corresponds to the receiving antenna used by the terminal device to receive the downlink signal.

[0100] S302. The network device sends the indication information to the terminal device, and the terminal device receives the indication information from the network device.

[0101] S303. The network device sends a downlink signal to the terminal device, and the terminal device uses the receiving antenna corresponding to at least one SRS resource to receive the downlink signal from the network device.

[0102] In the embodiments of the present application, the receiving antenna used by the terminal device to receive the downlink signal includes a receiving antenna port and / or a receiving beam. The receiving antenna port and / or the receiving beam are selected by the network device for the terminal device.

[0103] Specifically, 1) if none of the antenna ports of the terminal device performs ABF, the network device only selects a receiving antenna port for the terminal device; 2) if the beamforming method of each antenna port of the terminal device can perform ABF, the network device can first select a receiving antenna port for the terminal device, and then select a receiving beam for the terminal device from the beams of the receiving antenna port; 3) if none of the antenna ports of the terminal device performs ABF (for the sake of description, the antenna ports that do not perform ABF are called the first antenna ports), but the combination of multiple antenna ports can perform ABF (for the sake of description, the combination of multiple antenna ports that can perform ABF is called the second antenna port here), the network device can first select the first antenna port and / or the second antenna port for the terminal device. If the selection result includes the second antenna port, further select a receiving beam for the terminal device from the beams on the second antenna port; 4) if a part of the antenna ports of the terminal device can perform ABF and another part of the antenna ports do not perform ABF, the network device can first select the receiving antenna port that performs ABF and / or the receiving antenna port that does not perform ABF for the terminal device, and then further select a receiving beam for the terminal device from the beams of the receiving antenna port that performs ABF.

[0104] The following will respectively elaborate on these four cases in detail.

[0105] Case 1: Assume that none of the antenna ports performs ABF. The network device selects a receiving antenna port for the terminal device and indicates the receiving antenna port to the terminal device.

[0106] In this case, the network device can only consider the selection of antenna ports and does not need to consider beam selection.

[0107] (1) First, the network device configures a first SRS resource set (SRS resource set #0) for the terminal device. The SRS resources in the SRS resource set #0 have an association relationship (or correspondence relationship) with the antenna ports of the terminal device. For the sake of description, the association relationship between the SRS resources in the SRS resource set #0 and the antenna ports of the terminal device is called the first association relationship.

[0108] It should be understood that the so-called first association relationship means that the SRS resources in the SRS resource set #0 have a clear mapping relationship with the antenna ports of the terminal device allocated to them; based on this mapping relationship, the network device and the terminal device can find the corresponding terminal device antenna ports according to the SRS resources, and can also find the corresponding SRS resources according to the terminal device antenna ports.

[0109] One possible first association relationship is that: SRS resource set #0 includes at least one first SRS resource, each first SRS resource includes at least one first SRS port, and each first SRS port is associated with one antenna port of the terminal device.

[0110] Optionally, the specific configuration of SRS resource set #0 may be related to the antenna capabilities reported by the terminal device. Among them, the antenna capabilities include some or all of the following information: the number of transmit antenna ports (T) (i.e., the number of transmit RF channels), the number of receive antenna ports (R) (i.e., the number of receive RF channels), the total number of antenna ports (A), and the number of analog beams (B). It should be understood that only when the terminal device reports A > R (i.e., there is a need to switch the receive antenna ports), the network device will configure the SRS resource set #0 for the terminal device.

[0111] Exemplarily, the first association relationship may be:

[0112] SRS resource#r0+i and SRS Port#j are associated with Antenna Port#p0+i*T+j;

[0113] where i = 0, 1, …, A / T – 1; j = 0, 1, …, T – 1; A is the total number of antenna ports, and T is the number of transmit antenna ports.

[0114] It can be seen from this that one antenna port can be uniquely identified by one first SRS resource and one first SRS port.

[0115] Illustrated with a specific example: Suppose SRS resource set #0 includes 4 first SRS resources, each first SRS resource consists of 2 first SRS ports (SRS Port#0 and SRS Port#1), each first SRS port is associated with 1 antenna port, and the first association relationship is as follows: SRS resource#r0+i, SRS Port#0 is associated with antenna port Antenna Port#p0+2i, SRS Port#1 is associated with antenna port Antenna Port#p0+2i+1, where i = 0, 1, …, 3; r0 represents the initial ID of the first SRS resource in the SRS resource set #0, and p0 represents the initial ID of the antenna port of the terminal device. Specifically as shown in Table 1, according to Table 1, one antenna port can be uniquely identified by one first SRS resource ID and one first SRS port ID.

[0116] Table 1 SRS resource set #0

[0117] First SRS Resource ID First SRS Port ID Antenna Port ID r0+0 0 p0+0 r0+0 1 p0+1 r0+1 0 p0+2 r0+1 1 p0+3 r0+2 0 p0+4 r0+2 1 p0+5 r0+3 0 p0+6 r0+3 1 p0+7

[0118] (2) After the network device configures the SRS resource set #0 for the terminal device, the terminal device sends the first SRS on each antenna port. The network device tests the reception performance of each antenna port based on the first SRS, and uses the set of antenna ports with the best reception performance (a set of antenna ports includes one or more antenna ports) as the reception antenna ports of the terminal device.

[0119] Since the first SRS resource in the SRS resource set #0 has a first association relationship with the antenna ports of the terminal device, the network device can measure the channel information of all antenna ports of the terminal device (such as AntennaPort#p0 to Antenna Port#p0+7) by receiving the first SRS, and select a set of antenna ports with the best reception performance (such as antenna ports Antenna Port#p0, Antenna Port#p0+1) as the reception antenna ports of the terminal device.

[0120] (3) The network device notifies the terminal device of the selected reception antenna ports through a signaling (carrying indication information); the terminal device receives the downlink signal from the network device based on the reception antenna ports selected for it by the network device.

[0121] Similarly, since the first SRS resource in the SRS resource set #0 has a first association relationship with the antenna ports of the terminal device, the network device can indicate the first SRS resource associated with the reception antenna ports to the terminal device (that is, send indication information). And the terminal device determines the reception antenna ports corresponding to the first SRS resource indicated by the network device based on the first association relationship between the first SRS resource and the antenna ports of the terminal device, and then receives the downlink signal from the network device based on the reception antenna ports.

[0122] For example, still taking Table 1 above as an example, assuming that after the network device measures the channel information of all antenna ports of the terminal device, the set of antenna ports with the best performance is Antenna Port#p0, Antenna Port#p0+1, then the network device can indicate SRS resource#r0, SRS Port#0, and SRS resource#r0, SRS Port#1 to the terminal device.

[0123] Case 2: Assume that all reception antennas perform ABF. The network device selects a reception beam for the terminal device and indicates the reception beam to the terminal device.

[0124] In the embodiments of the present application, the ABF beam can be generated by a single antenna port, or can be generated by combining two or more antenna ports. Hereinafter, the case of generating an ABF beam by a single antenna port will be described separately.

[0125] Specifically, if one antenna port drives multiple antenna elements in the horizontal direction, ABF in the horizontal direction can be achieved, that is, the ABF beam can be generated by one antenna port.

[0126] Since the terminal device has multiple antenna ports, considering obtaining better reception performance and higher beam selection efficiency, the network device can first (based on the first SRS resource set) select a receiving antenna port with good reception performance for the terminal device, and then (based on the second SRS resource set) select a receiving beam with good reception performance for the terminal device from the beams corresponding to these receiving antenna ports.

[0127] (1) First, the network device configures the first SRS resource set (SRS resource set #0) for the terminal device.

[0128] The specific implementation method of part (1) in case 2 here can refer to the specific implementation method of part (1) in case 1 above. For example, in Table 1 above, it will not be elaborated here.

[0129] (2) After the network device configures the SRS resource set #0 for the terminal device, the terminal device sends the first SRS on each antenna port. The network device tests the reception performance of each antenna port according to the first SRS, and takes the antenna ports whose reception performance meets the preset conditions as the receiving antenna ports of the terminal device.

[0130] (3) The network device configures the second SRS resource set (SRS resource set #1) for the terminal device. The SRS resources in the SRS resource set #1 have an association relationship (or a corresponding relationship) with the antenna ports of the terminal device and the beams generated by the antenna ports. For the sake of description, the association relationship between the SRS resources in the SRS resource set #1 and the antenna ports of the terminal device and the beams generated by the antenna ports is called the second association relationship here.

[0131] It should be understood that the so-called second association relationship means that the SRS resources in the SRS resource set #1 have a clear mapping relationship with the allocated antenna ports of the terminal device and the beams generated by the antenna ports; based on this mapping relationship, the network device and the terminal device can find the corresponding antenna ports of the terminal device and the corresponding beams according to the SRS resources, and can also find the corresponding SRS resources according to the antenna ports of the terminal device and the beams.

[0132] A possible second association relationship is that the SRS resource set #1 includes at least one second SRS resource, each second SRS resource includes at least one second SRS port, and each second SRS port is associated with an antenna port of the terminal device and a beam generated by the antenna port.

[0133] Optionally, the specific configuration of SRS resource set #1 may be related to the antenna capabilities reported by the terminal device. Among them, the antenna capabilities include some or all of the following information: the number of transmit antenna ports (T) (i.e., the number of transmit radio frequency channels), the number of receive antenna ports (R) (i.e., the number of receive radio frequency channels), the total number of antenna ports (A), and the number of analog beams (B). It should be understood that only when the terminal device reports B>1 (i.e., there is a beam switching requirement), the network device will configure the SRS resource set #1 for the terminal device.

[0134] Exemplarily, the second association relationship may be:

[0135] SRS resource#r1+i and SRS Port#j are associated with the Beam on Antenna Port#p0+(i*T+j)%A

[0136] Where i = 0, 1,..., A / T*B–1; j = 0, 1,..., T–1; A is the total number of antenna ports, T is the number of transmit antenna ports, B is the number of analog beams, and % is the modulo operation. is the floor operation.

[0137] It can be seen from this that a beam generated on one antenna port can be uniquely identified by a second SRS resource and a second SRS port.

[0138] Illustrated with a specific example: Suppose SRS resource set #1 includes 8 second SRS resources, each second SRS resource includes 2 second SRS ports (SRS Port#0 and SRS Port#1), and each second SRS port is associated with 1 antenna port and a beam generated by it, as shown in Table 2 below.

[0139] Table 2 SRS resource set #1

[0140] Second SRS Resource ID Second SRS Port ID Antenna Port ID Beam ID r1+0 0 p0+0 0 r1+0 1 p0+1 0 r1+1 0 p0+2 0 r1+1 1 p0+3 0 r1+2 0 p0+4 0 r1+2 1 p0+5 0 r1+3 0 p0+6 0 r1+3 1 p0+7 0 r1+4 0 p0+0 1 r1+4 1 p0+1 1 r1+5 0 p0+2 1 r1+5 1 p0+3 1 r1+6 0 p0+4 1 r1+6 1 p0+5 1 r1+7 0 p0+6 1 r1+7 1 p0+7 1

[0141] Optionally, the network device may configure SRS resource set #1 when configuring SRS resource set #0, or may configure SRS resource set #1 for the terminal device after determining the receive antenna ports. The embodiments of the present application do not make specific limitations.

[0142] Exemplarily, when the network device configures SRS resource set #0, it simultaneously configures SRS resource set #1. In this case, the SRS resources in SRS resource set #1 can correspond to all the antenna ports of the terminal device, such as all the SRS resources in Table 2, and a part of the SRS resources in SRS resource set #1 are triggered. In this way, the terminal device only needs to send SRS on different beams generated by the receiving antenna ports, which can reduce the number of times the terminal device sends SRS.

[0143] For example, if Antenna Port#p0+0 and Antenna Port#p0+1 are selected, although SRS resource set #1 includes SRS resource#r1+0 to 7, only SRS resource#r1+1 and SRS resource#r1+4 need to be triggered.

[0144] Exemplarily, after determining the receiving antenna ports, the network device can configure SRS resource set #1 for the terminal device according to the receiving antenna ports. In this case, the SRS resources in SRS resource set #1 only correspond to some of the antenna ports (i.e., the receiving antenna ports) of the terminal device, and all the SRS resources in SRS resource set #1 are triggered. In this way, the terminal device only needs to send SRS on different beams generated by the receiving antenna ports, which can not only reduce the number of times the terminal device sends SRS, but also effectively reduce the overhead of the network device for configuring the second SRS resource set.

[0145] For example, if Antenna Port p0+2 and Antenna Port p0+1 are selected, then SRS resource set #1 only needs to configure SRS resource#r1+1 and SRS resource#r1+4, and trigger SRS resource#r1+1 and SRS resource#r1+4.

[0146] (4) After the network device configures SRS resource set #1 for the terminal device, the terminal device sends the second SRS on each beam of each antenna port, and the network device tests the receiving performance of each beam on each antenna port according to the second SRS, and takes the set of beams with the best receiving performance as the receiving beams.

[0147] Since the second SRS resources in SRS resource set #0 have a second association relationship with the beams generated by the antenna ports of the terminal device, the network device can measure the channel information of the beams on all the antenna ports of the terminal device by receiving the second SRS, and select a set of beams with the best receiving performance (such as beam 0 on Antenna Port Antenna Port#p0 and beam 1 on Antenna Port#p0+1) as the receiving beams of the terminal device.

[0148] It should be noted that in specific implementation, steps (1) and (2) above may not be executed, that is, the second SRS resource can be directly configured for all antenna ports, and all beams on all antenna ports are measured based on the second SRS resource, and then the receiving beam with the best receiving performance is directly selected.

[0149] (5) Finally, the network device notifies the selected receiving beam (and the antenna port where the beam is located) to the terminal device through signaling; the terminal device determines the receiving beam (and the antenna port where the beam is located) according to the signaling, and receives the downlink signal from the network device based on the receiving beam.

[0150] Similarly, since the second SRS resource in SRS resource set #1 has a second association relationship with the antenna ports of the terminal device and the beams on the antenna ports, the network device can indicate the second SRS resource associated with the receiving beam to the terminal device (that is, send indication information), so that the terminal device determines the receiving antenna port and the receiving beam on the antenna port according to the second SRS resource indicated by the network device, and then receives the downlink signal from the network device based on the receiving beam on the antenna port.

[0151] For example, still taking Table 2 above as an example, assuming that after the network device measures the channel information of all antenna ports of the terminal device, the set of beams with the best performance is beam 0 on Antenna Port #p0 and beam 1 on Antenna Port #p0 + 1, then the network device can indicate SRS resource #r1 + 0, SRS Port #0, and SRS resource #r1 + 4, SRS Port #1 to the terminal device.

[0152] To more clearly understand the above method for selecting antenna ports and beams, a possible complete implementation process example is given below. See Figure 4 , a method for selecting antenna ports and beams, specifically including:

[0153] S401. The network device configures and triggers the first SRS resource set (SRS resourse set #0) for the terminal device.

[0154] S402. The terminal device transmits the first SRS on each antenna port in turn based on the first SRS resource set.

[0155] That is, the physical resources for the terminal device to transmit the first SRS are indicated by the first SRS resource set (SRS resource set #0).

[0156] S403. The network device measures the first SRS sent by the terminal device on each antenna port, and selects the receiving antenna port of the terminal device.

[0157] The network device receives the first SRS, measures the channel information of all antenna ports, and selects a set of antenna ports with the best receiving performance as the receiving antenna port of the terminal device. It should be understood that a set of antenna ports here may include multiple antenna ports.

[0158] Optionally, after performing step S403, the network device can immediately notify the terminal device of the receiving antenna port. The network device can also notify the terminal device of the receiving antenna port and the receiving beam together after selecting the receiving beam for the terminal device.

[0159] Taking the example that the network device notifies the terminal device of the receiving antenna port and the receiving beam together after selecting the receiving beam for the terminal device.

[0160] S404. The network device configures and triggers a second SRS resource set (SRS resourse set#1) for the terminal device.

[0161] S405. The terminal device sends a second SRS on each beam of the receiving antenna port based on the second SRS resource set.

[0162] That is, the physical resources for the terminal device to send the second SRS are indicated by the second SRS resource set (SRS resource set#2).

[0163] S406. The network device measures the second SRS sent by the terminal device on each beam of the receiving antenna port, and selects the receiving beam of the terminal device.

[0164] The network device receives the second SRS, measures the channel information of all beams of the receiving antenna port, and selects a set of beams with the best receiving performance as the receiving beam of the terminal device. It should be understood that a set of beams here may include one or more beams.

[0165] S407. The network device notifies the terminal device of the receiving antenna port and the receiving beam through signaling, and sends a downlink signal.

[0166] S408. The terminal device receives the downlink signal from the network device based on the receiving antenna port and the receiving beam.

[0167] Scenario 3: If no ABF is performed on each antenna port of the terminal device (for ease of description, the antenna port without ABF is referred to as the first antenna port), but ABF can be performed on a combination of multiple antenna ports (for ease of description, the combination of multiple antenna ports that can perform ABF is referred to as the second antenna port) here, then the network device can first select a receiving antenna port for the terminal device from the first antenna port and / or the second antenna port. If the receiving antenna port selection result includes the antenna ports in the second antenna port, then a receiving beam is further selected for the terminal device from the beams on the second antenna port.

[0168] Specifically, taking the horizontal beam scanning as an example, one antenna port only drives 1 antenna element in the horizontal direction, but after multiple antenna ports are combined, multiple antenna elements can be driven in the horizontal direction. Then the ABF beam is generated by two or more antenna ports.

[0169] Since there are multiple antennas on the terminal device, there may also be multiple combinations of antenna ports on the terminal device that can generate ABF beams.

[0170] Exemplarily, assume that the terminal device has a total of 8 physical antenna ports Antenna Port#p0 to Antenna Port#p7. Taking the combination of two actual physical antenna ports that can generate an ABF beam as an example, these two actual physical antenna ports can be referred to as an antenna port group for ABF. As shown in Table 3, assume there are four antenna port groups available for ABF: namely, the antenna port group Antenna Port#p1+0 composed of Antenna Port#p0+0 and Antenna Port#p0+1, the antenna port group Antenna Port#p1+1 composed of Antenna Port#p0+2 and Antenna Port#p0+3, the antenna port group Antenna Port#p1+2 composed of Antenna Port#p0+4 and Antenna Port#p0+5, and the antenna port group Antenna Port#p1+3 composed of Antenna Port#p0+6 and Antenna Port#p0+7.

[0171] Table 3 Correspondence between the first antenna port and the second antenna port

[0172]

[0173] It should be understood that each of the second antenna ports in Table 3 above actually corresponds to two actual physical antenna ports (i.e., the first antenna ports). The ID of the second antenna port here (such as p1+0, p1+1, etc.) is just a name given for the convenience of describing a group of antenna ports that can generate ABF beams. In actual applications, the second antenna port can also be directly described by the IDs of the respective antenna ports corresponding to ABF. For example, Antenna Port#p1+0 can also be expressed as Antenna Port#p0+0 and Antenna Port#p0+1, and Antenna Port#p1+1 can also be expressed as Antenna Port#p0+2 and Antenna Port#p0+3. Of course, there can also be other ways to describe the combination of multiple antenna ports, which are not restricted here.

[0174] Considering obtaining better reception performance and higher beam selection efficiency, the network device can first select a set of receiving antenna ports with good reception performance for the terminal device, and then select a receiving beam with good reception performance for the terminal device from the beams corresponding to these receiving antenna port sets. The specific steps include:

[0175] (1) First, the network device configures a first SRS resource set (SRS resource set #0) for the terminal device.

[0176] The specific implementation method of part (1) in case 2 here can refer to the specific implementation method of part (1) in case 1 above, such as Table 1 above, which will not be elaborated here.

[0177] (2) After the network device configures the SRS resource set #0 for the terminal device, the terminal device sends the first SRS on each antenna port. The network device tests the reception performance of each antenna port according to the first SRS, and takes the antenna ports whose reception performance meets the preset conditions as the receiving antenna ports of the terminal device.

[0178] After the network device tests the reception performance of each antenna port according to the first SRS, it selects antenna ports with better reception performance from Table 3 above. The types of these antenna ports may only include the first antenna ports, may only include the second antenna ports, or may include both the first antenna ports and the second antenna ports.

[0179] If only the first antenna ports are included, the network device can directly notify the selected first antenna ports (here, the first antenna ports selected by the network device are called the first receiving antenna ports) to the terminal device. The terminal device determines the first receiving antenna ports according to the first SRS resources indicated by the network device, and receives the downlink signal from the network device based on the first receiving antenna ports. The specific implementation can refer to part (3) in case 1 above.

[0180] If only the second antenna port is included, or both the first antenna port and the second antenna port are included, the network device performs the following (3) to (5).

[0181] (3) The network device configures a second SRS resource set (SRS resource set #1) for the second antenna port of the terminal device. The SRS resources in SRS resource set #1 have an association relationship (or correspondence relationship) with the second antenna port of the terminal device and the beam on the second antenna port. For ease of description, the association relationship between the SRS resources in SRS resource set #1, the second antenna port of the terminal device, and the beam on the second antenna port is referred to as the second association relationship. It should be understood that unless otherwise specified, the beams in this document refer to ABF beams.

[0182] The so-called second association relationship means that the SRS resources in SRS resource set #1 have a clear mapping relationship with the second antenna port of the terminal device to which they are allocated and the beam. Based on this mapping relationship, the network device and the terminal device can find the corresponding second antenna port of the terminal device and the beam on the second antenna port according to the SRS resources, and can also find the corresponding SRS resources according to the second antenna port of the terminal device and the beam on the second antenna port.

[0183] A possible association method is: SRS resource set #1 includes at least one second SRS resource, each second SRS resource includes at least one second SRS port, and each second SRS port is associated with at least two actual physical antenna ports.

[0184] In a possible implementation manner of the embodiments of the present application, SRS resource set #1 may not be directly associated with the physical antenna port of the terminal device. A third association relationship may be established between SRS resource set #0 and SRS resource set #1, and then SRS resource set #1 is indirectly associated with the actual physical antenna port of the terminal device through the third association relationship and SRS resource set #0.

[0185] Exemplarily, the third association relationship includes: one second SRS port corresponds to multiple first SRS ports, and the second SRS resources where the multiple second SRS ports corresponding to the same first SRS port are located are configured with different spatial relationship information (SpatialRelationInfo). The spatial relationship information is used to indirectly indicate beam information, such as the filter coefficients used by the terminal device to receive signals. Since one second SRS port corresponds to multiple first SRS ports, and one first SRS port is associated with one actual physical antenna port, one second SRS port is indirectly associated with multiple physical antenna ports.

[0186] Similarly, the specific configuration of the SRS resource set #1 here is related to the antenna capabilities reported by the terminal device. It should be understood that only when the terminal device reports B>1 (i.e., there is a beam selection requirement), the network device will configure the SRS resource set #1 for the terminal device.

[0187] Exemplarily, the first association relationship is:

[0188] SRS resource r0+i, SRS Port j is associated with Antenna Port p0+i*T+j;

[0189] where i = 0, 1, …, A / T – 1, j = 0, 1, …, T – 1; A is the actual number of antenna ports of the terminal device (i.e., the total number of the first antenna ports), and T is the number of transmit RF channels;

[0190] The second association relationship is:

[0191] SRS resource r1+i’, SRS Port j’ is associated with Antenna Port p0+(i’*T+j’)%A’,

[0192] where i’ = 0, 1, …, A’ / T*B – 1; j’ = 0, 1, …, T – 1; it should be understood that A’ is different from A, A is the total number of the first antenna ports, A’ is the total number of the second antenna ports; T is the number of transmit RF link channels;

[0193] The third association relationship is:

[0194] SRS resource r1+i”, SRS Port j” is associated with SRS resource r0+(i”*T+j”)%A’, SRS Port k;

[0195] where k = {0, 1, …, T-1}; i” = 0, 1, …A’ / T*B – 1; j” = 0, 1, …T – 1.

[0196] From the above, it can be seen that: a beam on a second antenna port (i.e., a group of antenna ports that can be combined to generate an ABF beam) can be uniquely identified by a second SRS resource and a second SRS port.

[0197] Illustrated with a specific example: Suppose SRS resource set #1 includes 4 second SRS resources, and each second SRS resource includes 2 second SRS ports (SRS Port #0’ and SRS Port #1’). Then, the configuration of SRS resource set #1 can be as shown in Table 4 below. Combining Table 4 and Table 3, the third association relationship between SRS resource set #1 and SRS resource set #0 can be as shown in Table 5.

[0198] Table 4 SRS resource set #1

[0199]

[0200] Table 5 The third association relationship between SRS resource set #1 and SRS resource set #0

[0201]

[0202] Optionally, the network device may configure SRS resource set #1 when configuring SRS resource set #0, or may configure SRS resource set #1 for the terminal device after selecting the receiving antenna port. The embodiments of the present application do not make specific limitations.

[0203] Exemplarily, the network device configures SRS resource set #1 when configuring SRS resource set #0. In this case, the SRS resources in SRS resource set #1 may correspond to all the second antenna ports of the terminal device (i.e., all antenna port groups that can generate ABF), such as all SRS resources in Table 3, and trigger some SRS resources in SRS resource set #1. In this way, it can be ensured that the terminal device only needs to send SRS on different beams generated by the receiving antenna port, and the number of times the terminal device sends SRS can be reduced.

[0204] For example, referring to Table 4, if the network device selects Antenna Port p1+2 and Antenna Port p1+3, although SRS resource set #1 includes SRS resource#r1+0, SRS resource#r1+1, SRS resource#r1+2, and SRS resource#r1+3, only SRS resource#r1+1 and SRS resource#r1+3 need to be triggered.

[0205] Exemplarily, after selecting a receiving antenna port, the network device may configure SRS resource set #1 for the terminal device according to the selected receiving antenna port. In this case, the SRS resources in SRS resource set #1 only correspond to some of the second antenna ports of the terminal device (i.e., the antenna port groups that can generate ABF), and all SRS resources in SRS resource set #1 are triggered. In this way, the overhead of the network device for configuring the second SRS resource set can be effectively reduced.

[0206] For example, referring to Table 4, if the network device selects Antenna Port p1+2 and Antenna Port p1+3, then SRS resource set #1 only needs to include SRS resource #r1+1 and SRS resource #r1+3, and SRS resource #r1+1 and SRS resource #r1+3 are triggered.

[0207] (4) After the network device configures SRS resource set #1 for the terminal device, the terminal device sends the second SRS on each beam of the second antenna port. The network device tests the reception performance of each beam on each second antenna port according to the second SRS, and uses the set of beams with the best reception performance (including one or more beams) as the reception beam of the terminal device, where the second antenna port where the reception beam is located is the second receiving antenna port.

[0208] Similarly, since the second SRS resources in SRS resource set #1 have a second association relationship with the second antenna ports of the terminal device and the beams on the second antenna ports, the network device can measure the channel information of the beams on each second antenna port of the terminal device by receiving the second SRS, select the set of beams with the best reception performance as the reception beam of the terminal device, and use the second antenna port where the reception beam is located as the second receiving antenna port.

[0209] It should be understood that the beam selection here is considered from the perspective of the reception performance of the beam. Therefore, only some of the beams on each second receiving antenna port may be selected as the reception beam, or all of the beams may be selected as the reception beam, which is not restricted here.

[0210] (5) Finally, the network device notifies the terminal device of the selected second receiving antenna port and the reception beam through signaling, and the terminal device receives the downlink signal from the network device according to the second receiving antenna port and the reception beam.

[0211] Similarly, since the second SRS resource in the SRS resource set #1 has a second association relationship with the second antenna port and beam of the terminal device, the network device can indicate the SRS resource associated with the second receiving antenna port and the receiving beam to the terminal device. The terminal device can find the corresponding receiving beam and the second receiving antenna port based on the second association relationship, find the actual physical antenna port corresponding to the second receiving antenna port based on the third association relationship and the first association relationship, and then receive the downlink signal from the network device based on the second receiving antenna port and the receiving beam.

[0212] For example, assume that a set of beams finally selected by the network device is beam #0 generated by Antenna Port#p1+0. Then, according to Table 4 above, the indication information may include: SRS resource#r1+0, SRS Port#0’. After receiving the indication information (SRS resource#r1+0, SRS Port#0’), the terminal device can find the corresponding SRS resource#r0+0, SRS Port#0 and SRS resource#r0+0, SRS Port#1 for SRS resource#r1+0, SRS Port#0’ according to the third association relationship (see Table 5); and then determine the actual physical antenna ports Antenna Port#p0+0 and Antenna Port#p0+1 corresponding to SRS resource#r0+0, SRS Port#0 and SRS resource#r0+0, SRS Port#1 (i.e., corresponding to Antenna Port#p1+0) according to the first association relationship (see Table 3 or Table 5). After that, the terminal device receives the downlink signal from the network device based on the spatial relationship information configured by Antenna Port#p0+0 and Antenna Port#p0+1 and SRS resource#r1+0 (the spatial relationship information can determine beam #0).

[0213] In practical applications, the above various situations can also be combined with each other. For example, situation 1 and situation 2 above can be combined with each other to implement situation 4 below.

[0214] Scenario 4: If some antenna ports of the terminal device can perform ABF (for example, each of the M antenna ports can perform ABF), and some other antenna ports do not perform ABF (for example, each of the N antenna ports does not perform ABF), the network device can first select receiving antenna ports for the terminal device (which may include antenna ports among the M receiving antennas or may also include antenna ports among the N receiving antennas). If none of the selected receiving antenna ports perform ABF, the network device directly notifies the terminal device of the receiving antenna ports. If there are antenna ports among the selected receiving antenna ports that perform ABF, the network device can further select a beam for the terminal device.

[0215] (1) First, the network device configures a first SRS resource set (SRS resource set #1) for the terminal device, SRS resource set #1.

[0216] For the specific details here, reference can be made to the relevant parts in Scenario 1 above, which will not be elaborated here.

[0217] (2) After the network device configures SRS resource set #0 for the terminal device, the terminal device sends the first SRS on each antenna port. The network device tests the receiving performance of each antenna port based on the first SRS and selects receiving antenna ports that are not used for ABF and receiving antenna ports that are used for ABF.

[0218] Suppose the terminal device has a total of 8 physical antenna ports, Antenna Port #p0 to Antenna Port #p7. Among them, each of Antenna Port #p0 to Antenna Port #p3 cannot perform ABF, and each of Antenna Port #p4 to Antenna Port #p7 can perform ABF. The antenna ports selected by the terminal device include Antenna Port #p0 and Antenna Port #p1 that cannot perform ABF, and Antenna Port #p6 and Antenna Port #p7 that can perform ABF.

[0219] (3) The network device configures a second SRS resource set for the receiving antenna ports used for ABF. There is a clear association relationship between the SRS resources in SRS resource set #1 and the beams (on the antenna ports that can be used for ABF and the antenna ports that can be used for ABF) of the terminal device.

[0220] For example, continuing with the example where the antenna ports selected by the terminal device are Antenna Port#p0, Antenna Port#p1, Antenna Port#p6, and Antenna Port#p7, the network device may configure a second SRS resource set for the selected receive antenna ports Antenna Port#p6 and Antenna Port#p7 for ABF, or configure a second SRS resource set for all receive antenna ports Antenna Port#p4 to Antenna Port#p7 that can be used for ABF. The specific implementation of this part can refer to the relevant part in Case 2 above.

[0221] (4) After the network device configures the SRS resource set #1 for the terminal device, the terminal device sends the second SRS on each beam of the receive antenna ports for ABF, and the network device tests the receive performance of each beam based on the second SRS, and uses the set of beams with the optimal receive performance as the receive beams of the terminal device.

[0222] For example, the network device selects beam#0 on Antenna Port#p6 and beam#1 on Antenna Port#p7.

[0223] (5) Finally, the network device notifies the terminal device of the selected receive antenna ports and receive beams through signaling, and the terminal device receives the downlink signal from the network device based on the selected receive antenna ports and receive beams of the network device.

[0224] For example, the network device notifies the terminal device of the selected Antenna Port#p0 and Antenna Port#p1 that cannot be used for ABF, as well as beam#0 on Antenna Port#p6 and beam#1 on Antenna Port#p7. The terminal device receives the downlink signal based on the selected Antenna Port#p0 and Antenna Port#p1 of the network device, and receives the downlink signal based on beam#0 on Antenna Port#p6 and beam#1 on Antenna Port#p7 selected by the network device.

[0225] The above introduces the specific implementation of the network device configuring the SRS resource set for the terminal device and selecting the receive antenna ports and / or receive beams for the terminal device based on the SRS resource set. The following introduces the specific implementation of the network device indicating the antenna ports and / or receive beams to the terminal device after determining the antenna ports and / or receive beams.

[0226] Method 1: The signaling (i.e., the indication information) carries the SRS resource information.

[0227] For example, the signaling is composed of an SRS resource ID and an SRS Port ID. According to the association relationship between the SRS resource and the antenna port and / or beam, the SRS resource ID and the SRS Port ID jointly indicate the receiving antenna port and / or the receiving beam.

[0228] Optionally, the signaling may be carried by a semi-persistent SRS activation / deactivation (SP SRS Activation / Deactivation) media access control control element (MAC CE).

[0229] The signaling format may be as Figure 5 shown, Figure 5 The unshaded part in it is the existing field of the MAC CE, and the shaded part is the newly added or modified field. The specific definitions of each field are as follows:

[0230] *PE: 1 bit. When the value of PE is "1", the MAC CE is used to enable the receiving antenna port and / or the receiving beam of the terminal device; when the value of PE is "0", the MAC CE is used for semi-persistent SRS activation / deactivation.

[0231] *SRS Resource IDm: 1 bit. The ID of the SRS resource associated with the receiving antenna port and / or the receiving beam.

[0232] *SRS Port IDm: 2 bits. The ID of the SRS port associated with the receiving antenna port.

[0233] In Mode 2, the signaling (i.e., the indication information) carries the index information of the receiving antenna port and / or the receiving beam.

[0234] In a possible design, the index information may specifically be the index value of the antenna port and / or the receiving beam itself.

[0235] Exemplarily, taking the receiving antenna port index as an example. As Figure 6 shown, assume that the terminal device has 4 panels, 2 antenna ports on each panel, and no ABF beam is generated by each antenna port. Table 6 is an example of a possible subset of receiving antenna port combinations, giving 10 possible receiving antenna port combinations. It should be understood that the combination method of the antenna ports is actually more than the 10 shown in Table 6. The groups of antenna ports listed in Table 6 are those with high probability of receiving performance reaching the preset conditions. When the network device selects the receiving antenna port for the terminal device, only one set of antenna port combinations with the best performance is selected from Table 6, which can improve the calculation rate.

[0236] Table 6 Subset of receiving antenna port combinations

[0237] Combination Index Antenna Port ID 0 0 1 2 3 1 2 3 4 5 2 4 5 6 7 3 0 1 6 7 4 0 3 5 6 5 1 2 4 7 6 0 1 2 7 7 1 2 3 4 8 2 4 5 7 9 1 4 6 7

[0238] In rows 2 to 5 of Table 6, assuming that the signal propagation is a line of sight (LOS) path, the antenna ports with the optimal reception performance are most likely concentrated on two adjacent panels of the terminal device; in rows 6 and 7 of Table 6, assuming that the signal propagation is a non-line of sight (NLOS) path, the antenna ports with the optimal reception performance are most likely evenly distributed on all the panels of the terminal device; in rows 8 to 11 of Table 6, assuming that one panel of the terminal device is blocked, the antenna ports with the optimal reception performance are most likely concentrated on the opposite panel of the blocked panel, and a small part is distributed on other panels.

[0239] It should be understood that the subset of the received antenna port combinations is related to the antenna capabilities reported by the terminal device.

[0240] In addition, if a beam needs to be selected for the terminal device, the row where each of the above indexes is located may further include the ID of the beam, and no detailed examples are given here.

[0241] Optionally, embodiments of the present application can pre-design multiple sets of received antenna port / received beam combination subsets according to different antenna capabilities. When the network device selects a received antenna port / received beam for the terminal device, it selects the received antenna port / received beam for the terminal device from the subset of the received antenna port / received beam combinations corresponding to the antenna capabilities of the terminal device.

[0242] In another possible design, based on the above-mentioned association relationship between the antenna port and / or beam and the SRS resource, the index information can also be the index value of the combination composed of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the antenna port and / or received beam.

[0243] Exemplarily, the indication information is specifically: the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the received antenna port and / or received beam of the receiving antenna in the subset of the received antenna port / received beam combinations (for the convenience of description, referred to as the first subset here). The first subset includes the SRS resource ID, the SRS port ID of the SRS resource corresponding to each received antenna combination in multiple received antenna combinations, and the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each received antenna combination. The index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each received antenna combination is unique in the first subset. For example, as shown in Table 7:

[0244] Table 7 First subset

[0245]

[0246] Of course, there are more than 8 combinations of actual antenna ports and / or beams shown in Table 7. Table 7 can be a proper subset of the complete set composed of all possible combinations of antenna ports and / or beams of the terminal device. What is listed in Table 7 is a set of combinations of antenna ports and / or beams whose reception performance can probably reach the preset conditions. When the network device selects a receiving antenna port and / or a receiving beam for the terminal device, it selects a set of antenna ports and / or beam combinations with the best performance from Table 7, which can improve the calculation rate.

[0247] Similarly, the first subsets corresponding to terminal devices with different antenna capabilities can be different. Therefore, before the terminal device receives the indication information from the network device, the terminal device can also send the antenna information of the terminal device to the network device, so that the network device determines the first subset according to the antenna information of the terminal device, and selects a receiving antenna port and / or a receiving beam for the terminal device from the first subset.

[0248] Similarly, in Mode 2, the signaling (index information) can also be carried by the MAC CE or the downlink control information (DCI).

[0249] For example, Figure 7A is the format of the signaling carried by the MAC CE, where the Combined Index: 8 bits, represents the index of the receiving antenna port and / or the receiving beam in the receiving antenna port / receiving beam combination subset. For example, Figure 7B is the format of the signaling carried by the DCI, where the Combined Index: 8 bits, represents the index of the receiving antenna port and / or the receiving beam in the receiving antenna port / receiving beam combination subset.

[0250] According to the above, in the embodiment of the present application, based on the correlation or reciprocity between the uplink channel and the downlink channel, the network device receives the uplink SRS sent by the terminal device and tests the reception performance of each antenna port and / or beam of the terminal device, and then the network device selects a receiving antenna port and / or a beam for the terminal device. Then, for the terminal device, it only needs to switch the transmitting antenna port to send the SRS to complete the measurement of all downlink channel information, which can avoid problems such as the inability to receive downlink signals during the switching time and the degradation of reception performance after switching caused by the terminal device switching the receiving antenna port in the prior art, thereby improving the downlink spectrum efficiency. And since the uplink transmission is controllable for the terminal device, the terminal device can avoid affecting other uplink transmissions when switching the transmitting antenna port and / or the transmitting beam, and can ensure the transmission performance of the terminal device.

[0251] Second, in the embodiments of the present application, there is a clear association relationship between the SRS resources configured by the network device for the terminal device and the antenna ports and / or beams of the terminal device (such as the first association relationship, the second association relationship, the third association relationship, etc. mentioned above). This not only enables the network device to select the receiving antenna ports and / or receiving beams for the terminal device through these association relationships, but also enables the network device to notify the terminal device of the receiving antenna port and / or receiving beam information based on these association relationships through signaling carrying SRS resource information.

[0252] In addition, in the embodiments of the present application, when the network device notifies the terminal device of the selected receiving antenna port and / or receiving beam information through signaling, there are two designs for the signaling: The first type of signaling carries the SRS resource information of the receiving antenna port and / or receiving beam, and the second type of signaling receives the index information of the receiving antenna port and / or receiving beam (or the index information of the SRS resource corresponding to the receiving antenna port and / or receiving beam). The first signaling design has little impact on the protocol, and the performance of the receiving antenna port and / or receiving beam selected by the network device is excellent. The second signaling design has low overhead, and the computational complexity of the network device for selecting the receiving antenna port and / or receiving beam is low.

[0253] It should be understood that the above-mentioned various embodiments of the present application can be combined with each other to achieve different technical effects.

[0254] The method in the embodiments of the present application has been introduced above in conjunction with the accompanying drawings. Next, the apparatus for implementing the above method in the embodiments of the present application will be introduced in conjunction with the accompanying drawings.

[0255] See Figure 8 , based on the same technical concept, the embodiments of the present application provide a signal receiving apparatus 800. The apparatus 800 can be a terminal device or a device 800 on the terminal device. The apparatus 800 includes modules for executing Figure 3 or Figure 4 the above-mentioned method.

[0256] Exemplarily, the apparatus 800 may include:

[0257] A receiving module 801, configured to receive indication information from a network device, where the indication information is used to indicate at least one channel sounding reference signal SRS resource, and the at least one SRS resource corresponds to a receiving antenna used by the apparatus 800 to receive a downlink signal;

[0258] A processing module 802, configured to control the receiving module 801 to receive the downlink signal from the network device using the receiving antenna corresponding to the at least one SRS resource.

[0259] In a possible implementation, the at least one SRS resource corresponds to the receiving antenna used by the apparatus 800 to receive a downlink signal, and may include:

[0260] The at least one SRS resource includes at least one first SRS resource and at least one second SRS resource. Among them, each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with an antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports.

[0261] In a possible implementation, the processing module 802 is specifically configured to:

[0262] Determine a first receiving antenna port according to the first SRS resource in the at least one SRS resource, determine a second receiving antenna port and a receiving beam according to the second SRS resource in the at least one SRS resource; control the receiving module 801 to use the determined first receiving antenna port, second receiving antenna port and receiving beam to receive the downlink signal from the network device.

[0263] In a possible implementation, each of the second SRS ports being associated with at least two antenna ports may include:

[0264] Each of the first SRS ports is associated with an antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located.

[0265] In a possible implementation, the apparatus 800 may further include: a sending module 803, configured to send SRS according to at least one first SRS resource and at least one second SRS resource, where the indication information is generated by the network device according to the SRS; the at least one first SRS resource and / or the at least one second SRS resource are configured by the network device.

[0266] Wherein, Figure 8 The dashed box in indicates that the sending module 803 is optional for the apparatus 800.

[0267] In a possible implementation, the indication information may include:

[0268] The index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the receiving antenna in a first subset;

[0269] The first subset may include:

[0270] The SRS resource ID and SRS port ID corresponding to the SRS resource of each receiving antenna combination in multiple receiving antenna combinations, and the index value of the combination of the SRS resource ID and SRS port ID corresponding to the SRS resource of each receiving antenna combination;

[0271] Wherein, the index value of the combination of the SRS resource ID and SRS port ID corresponding to the SRS resource of each receiving antenna combination is unique in the first subset.

[0272] In a possible implementation manner, the apparatus 800 may further include:

[0273] A sending module 803, configured to send the antenna information of the apparatus 800 to the network device before the receiving module 801 receives the indication information from the network device, where the antenna information corresponds to the first subset, and the first subset is one of multiple subsets, and the multiple subsets correspond to different antenna information.

[0274] In a possible implementation manner, the antenna information may include one or more of the following items: the number of transmit RF channels, the number of receive RF channels, the total number of antenna ports, the number of analog beams; wherein, one analog beam is generated by at least two antenna ports.

[0275] Based on the same inventive concept, an embodiment of the present application further provides a signal sending apparatus 900. The apparatus 900 may be a network device or a device 900 on the network device. The apparatus 900 may include modules for executing Figure 3 or Figure 4 The method.

[0276] See Figure 9 , the apparatus 900 may include:

[0277] A processing module 901, configured to generate indication information; the indication information is used to indicate at least one channel sounding reference signal SRS resource, and the at least one SRS resource corresponds to the receiving antenna used by the terminal device to receive the downlink signal;

[0278] A sending module 902, configured to send the indication information to the terminal device, and send a downlink signal to the terminal device.

[0279] In a possible implementation manner, the at least one SRS resource corresponding to the receiving antenna used by the terminal device to receive the downlink signal may include:

[0280] The at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, where each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with an antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports;

[0281] In a possible implementation, the processing module 901 is configured to:

[0282] Determine a first SRS resource corresponding to the first receiving antenna port of the terminal device, and a second SRS resource corresponding to the second receiving antenna port and the receiving beam of the terminal device;

[0283] Generate the indication information according to the first SRS resource corresponding to the first receiving antenna port of the terminal device, and the second SRS resource corresponding to the second receiving antenna port and the receiving beam of the terminal device.

[0284] In a possible implementation, each of the second SRS ports being associated with at least two antenna ports may include:

[0285] Each of the first SRS ports is associated with an antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located.

[0286] In a possible implementation, the apparatus 900 may further include:

[0287] A receiving module 903, configured to receive the SRS sent by the terminal device according to at least one first SRS resource and at least one second SRS resource, where the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device, and the receiving beam are determined by the apparatus 900 according to the SRS; the at least one first SRS resource and the at least one second SRS resource are configured by the apparatus 900.

[0288] Wherein, Figure 9 The dashed box indicates that the receiving module 903 is optional for the apparatus 900.

[0289] In a possible implementation, the indication information may include:

[0290] An index value of a combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the receiving antenna in a first subset;

[0291] The first subset may include:

[0292] The SRS resource ID, SRS port ID corresponding to the SRS resource of each receive antenna combination in multiple receive antenna combinations, and the index value of the combination of the SRS resource ID and SRS port ID corresponding to the SRS resource of each receive antenna combination;

[0293] Wherein, the index value of the combination of the SRS resource ID and SRS port ID corresponding to the SRS resource of each receive antenna combination is unique in the first subset.

[0294] In a possible implementation manner, the device 900 may further include:

[0295] A receiving module 903, configured to receive antenna information from the terminal device before the processing module 901 generates the indication information, where the antenna information corresponds to the first subset, and the first subset is one of multiple subsets, and the multiple subsets correspond to different antenna information.

[0296] In a possible implementation manner, the antenna information may include one or more of the following: the number of transmit RF channels, the number of receive RF channels, the total number of antenna ports, the number of analog beams; wherein, one analog beam is generated by at least two antenna ports.

[0297] Based on the same inventive concept, referring to Figure 10 , an embodiment of the present application further provides a communication device 1000, including:

[0298] At least one processor 1001; and a memory 1002 and a communication interface 1003 communicatively connected to the at least one processor;

[0299] Wherein, the memory 1002 stores instructions executable by the at least one processor 1001, and the at least one processor 1001 makes the device 1000 execute as Figure 3 or Figure 4 the method described above.

[0300] Optionally, the memory 1002 is located outside the device 1000.

[0301] Optionally, the device 1000 includes the memory 1002, the memory 1002 is connected to the at least one processor 1001, and the memory 1002 stores instructions executable by the at least one processor 1001. Attached Figure 10 The memory 1002 being optional for the device 1000 is indicated by a dashed line.

[0302] Among them, the processor 1001 and the memory 1002 can be coupled through an interface circuit or integrated together, without limitation here.

[0303] In the embodiments of the present application, the specific connection medium between the above-mentioned processor 1001, memory 1002 and communication interface 1003 is not limited. In the embodiments of the present application Figure 10 it is shown that the processor 1001, memory 1002 and communication interface 1003 are connected through a bus 1004. The bus is Figure 10 shown by a thick line in the figure. The connection manners between other components are only for illustrative purposes and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 10 only one thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0304] It should be understood that the processor mentioned in the embodiments of the present application can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor that realizes functions by reading software codes stored in the memory.

[0305] Exemplarily, the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0306] It should be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM).

[0307] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) may be integrated in the processor.

[0308] It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0309] Based on the same technical concept, the embodiments of the present application further provide a computer-readable storage medium, including a program or instruction, which, when the program or instruction runs on a computer, causes the method as Figure 3 or Figure 4 described to be executed.

[0310] Based on the same technical concept, the embodiments of the present application further provide a computer program product, which, when it runs on a computer, causes the method as Figure 3 or Figure 4 described to be executed.

[0311] Based on the same inventive concept, an embodiment of the present application further provides a chip, which is coupled to a memory and is configured to read and execute program instructions stored in the memory to implement the method as described in Figure 3 or Figure 4 the method described above.

[0312] All relevant contents of each step involved in the above method embodiment can be cited in the function description of the corresponding functional module and will not be elaborated here.

[0313] Embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0314] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital versatile disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)).

[0315] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to cover these changes and modifications.

Claims

1. A signal receiving method, characterized in that, including: A terminal device receives indication information from a network device, where the indication information is used to indicate at least one sounding reference signal (SRS) resource, and the at least one SRS resource corresponds to a receiving antenna used by the terminal device to receive a downlink signal; The terminal device uses the receiving antenna corresponding to the at least one SRS resource to receive the downlink signal from the network device; Wherein, the indication information includes: an index value of a combination of an SRS resource ID and an SRS port ID of the SRS resource corresponding to the receiving antenna in a first subset; the first subset includes: the SRS resource ID, the SRS port ID of the SRS resource corresponding to each receiving antenna combination in multiple receiving antenna combinations, and the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination; wherein, the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination is unique in the first subset.

2. The method according to claim 1, wherein The at least one SRS resource corresponding to the receiving antenna used by the terminal device to receive a downlink signal includes: The at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, wherein each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with an antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports.

3. The method according to claim 2, wherein The terminal device uses the receiving antenna corresponding to the at least one SRS resource to receive the downlink signal from the network device, including: The terminal device determines a first receiving antenna port according to the first SRS resource in the at least one SRS resource, and determines a second receiving antenna port and a receiving beam according to the second SRS resource in the at least one SRS resource; and uses the determined first receiving antenna port, second receiving antenna port and receiving beam to receive the downlink signal from the network device.

4. The method according to claim 2, wherein Each of the second SRS ports being associated with at least two antenna ports includes: Each of the first SRS ports is associated with an antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located are configured with different spatial relationship information.

5. The method according to claim 3, characterized in that, Each of the second SRS ports being associated with at least two antenna ports includes: Each of the first SRS ports is associated with an antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located are configured with different spatial relationship information.

6. The method according to claim 2, wherein also including: The terminal device transmits SRS according to at least one first SRS resource and at least one second SRS resource, wherein the indication information is generated by the network device according to the SRS; The at least one first SRS resource and / or the at least one second SRS resource are configured by the network device.

7. The method according to claim 3, wherein Further included: The terminal device transmits SRS according to at least one first SRS resource and at least one second SRS resource, wherein the indication information is generated by the network device according to the SRS; The at least one first SRS resource and / or the at least one second SRS resource are configured by the network device.

8. The method according to any one of claims 1 to 7, characterized in that, Before the terminal device receives the indication information from the network device, further included: The terminal device sends the antenna information of the terminal device to the network device, the antenna information corresponding to the first subset, the first subset being one of a plurality of subsets, and the plurality of subsets corresponding to different antenna information.

9. The method according to claim 8, wherein The antenna information includes one or more of the following: the number of transmit RF channels, the number of receive RF channels, the total number of antenna ports, the number of analog beams; wherein one analog beam is generated by at least two antenna ports.

10. A signal sending method, characterized in that, Included: The network device sends indication information to the terminal device, the indication information being used to indicate at least one channel sounding reference signal SRS resource, the at least one SRS resource corresponding to the receive antenna used by the terminal device to receive the downlink signal; The network device sends a downlink signal to the terminal device; Wherein, the indication information includes: the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to the receive antenna in the first subset; the first subset includes: the SRS resource ID, the SRS port ID of the SRS resources corresponding to each receive antenna combination in the plurality of receive antenna combinations, and the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resources corresponding to each receive antenna combination; wherein the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receive antenna combination is unique in the first subset.

11. The method according to claim 10, wherein The at least one SRS resource corresponding to the receive antenna used by the terminal device to receive the downlink signal includes: The at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, wherein each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with one antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports.

12. The method according to claim 11, wherein The method further includes: The network device determines a first SRS resource corresponding to the first receive antenna port of the terminal device, and a second SRS resource corresponding to the second receive antenna port and the receive beam of the terminal device; The network device generates the indication information based on a first sounding reference signal (SRS) resource corresponding to a first receiving antenna port of the terminal device, a second receiving antenna port of the terminal device, and a second SRS resource corresponding to a receiving beam.

13. The method according to claim 11, wherein Each of the second SRS ports is associated with at least two antenna ports, including: Each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to multiple first SRS ports, and different spatial relationship information is configured for the second SRS resources where multiple second SRS ports corresponding to the same first SRS port are located.

14. The method according to claim 12, wherein Each of the second SRS ports is associated with at least two antenna ports, including: Each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to multiple first SRS ports, and different spatial relationship information is configured for the second SRS resources where multiple second SRS ports corresponding to the same first SRS port are located.

15. The method according to claim 11, wherein Further included is: The network device receives SRS sent by the terminal device according to at least one first SRS resource and at least one second SRS resource, where the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device, and the receiving beam are determined by the network device according to the SRS; the at least one first SRS resource and the at least one second SRS resource are configured by the network device.

16. The method according to claim 12, wherein Further included is: The network device receives SRS sent by the terminal device according to at least one first SRS resource and at least one second SRS resource, where the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device, and the receiving beam are determined by the network device according to the SRS; the at least one first SRS resource and the at least one second SRS resource are configured by the network device.

17. The method according to any one of claims 10-16, characterized in that, Further included is: Before the network device generates the indication information, the network device receives antenna information from the terminal device, the antenna information corresponding to a first subset, the first subset being one of multiple subsets, and the multiple subsets corresponding to different antenna information.

18. The method according to claim 17, wherein The antenna information includes one or more of the following: the number of transmit radio frequency channels, the number of receive radio frequency channels, the total number of antenna ports, the number of analog beams; where one analog beam is generated by at least two antenna ports.

19. A signal receiving device, characterized in that, Included is: a receiving module, configured to receive indication information from a network device, the indication information being used to indicate at least one channel sounding reference signal (SRS) resource, the at least one SRS resource corresponding to a receiving antenna used by the device to receive a downlink signal; a processing module, configured to control the receiving module to receive the downlink signal from the network device using the receiving antenna corresponding to the at least one SRS resource; Wherein, the indication information includes: an index value of a combination of an SRS resource ID and an SRS port ID of an SRS resource corresponding to the receiving antenna in a first subset; the first subset includes: SRS resource IDs, SRS port IDs of SRS resources corresponding to each receiving antenna combination among multiple receiving antenna combinations, and index values of combinations of SRS resource IDs and SRS port IDs of SRS resources corresponding to each receiving antenna combination; wherein, the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receiving antenna combination is unique in the first subset.

20. The device according to claim 19, characterized in that, The at least one SRS resource corresponds to a receiving antenna used by the device to receive a downlink signal, including: The at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, wherein each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with one antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports.

21. The device according to claim 20, wherein The processing module is specifically configured to: Determine a first receiving antenna port according to the first SRS resource in the at least one SRS resource, and determine a second receiving antenna port and a receiving beam according to the second SRS resource in the at least one SRS resource; Control the receiving module to receive the downlink signal from the network device by using the determined first receiving antenna port, second receiving antenna port, and receiving beam.

22. The device according to claim 20, wherein Each of the second SRS ports is associated with at least two antenna ports, including: Each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to multiple first SRS ports, and different spatial relationship information is configured for the second SRS resources where multiple second SRS ports corresponding to the same first SRS port are located.

23. The device according to claim 21, wherein Each of the second SRS ports is associated with at least two antenna ports, including: Each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to multiple first SRS ports, and different spatial relationship information is configured for the second SRS resources where multiple second SRS ports corresponding to the same first SRS port are located.

24. The device according to claim 20, wherein Further included: A sending module, configured to send SRS according to at least one first SRS resource and at least one second SRS resource, wherein the indication information is generated by the network device according to the SRS; The at least one first SRS resource and / or the at least one second SRS resource are configured by the network device.

25. The device according to claim 21, characterized in that, Further included: A sending module, configured to send SRS according to at least one first SRS resource and at least one second SRS resource, wherein the indication information is generated by the network device according to the SRS; The at least one first SRS resource and / or the at least one second SRS resource are configured by the network device.

26. The device according to any one of claims 19-25, characterized in that, The device further includes: a sending module, configured to send antenna information of the device to a network device before the receiving module receives indication information from the network device, where the antenna information corresponds to a first subset, the first subset is one of a plurality of subsets, and the plurality of subsets correspond to different antenna information.

27. The device according to claim 26, characterized in that, The antenna information includes one or more of the following: the number of transmit radio frequency channels, the number of receive radio frequency channels, the total number of antenna ports, and the number of analog beams; wherein, one analog beam is generated by at least two antenna ports.

28. A signal transmitting device, characterized in that, including: a processing module, configured to generate indication information; the indication information is used to indicate at least one channel sounding reference signal (SRS) resource, and the at least one SRS resource corresponds to a receive antenna used by a terminal device to receive a downlink signal; a sending module, configured to send the indication information to the terminal device and send a downlink signal to the terminal device; wherein, the indication information includes: an index value of a combination of an SRS resource ID and an SRS port ID of the SRS resource corresponding to the receive antenna in a first subset; the first subset includes: the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receive antenna combination in a plurality of receive antenna combinations, and an index value of a combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receive antenna combination; wherein, the index value of the combination of the SRS resource ID and the SRS port ID of the SRS resource corresponding to each receive antenna combination is unique in the first subset.

29. The device according to claim 28, wherein The fact that the at least one SRS resource corresponds to a receive antenna used by the terminal device to receive a downlink signal includes: the at least one SRS resource includes at least one first SRS resource and at least one second SRS resource, wherein, each first SRS resource in the at least one first SRS resource includes at least one first SRS port, and each of the first SRS ports is associated with one antenna port; each second SRS resource in the at least one second SRS resource includes at least one second SRS port, and each of the second SRS ports is associated with at least two antenna ports.

30. The device according to claim 29, wherein, The processing module is configured to: determine a first SRS resource corresponding to a first receive antenna port of the terminal device, a second SRS resource corresponding to a second receive antenna port of the terminal device and a receive beam; generate the indication information according to the first SRS resource corresponding to the first receive antenna port of the terminal device, the second SRS resource corresponding to the second receive antenna port of the terminal device and the receive beam.

31. The device according to claim 29, characterized in that, Each of the second SRS ports being associated with at least two antenna ports includes: each of the first SRS ports is associated with one antenna port, each of the second SRS ports corresponds to a plurality of the first SRS ports, and different spatial relationship information is configured for the second SRS resources where the plurality of second SRS ports corresponding to the same first SRS port are located.

32. The device according to claim 30, characterized in that, Each of the second SRS ports being associated with at least two antenna ports includes: Each of the first SRS ports is associated with an antenna port. Each of the second SRS ports corresponds to multiple first SRS ports, and different spatial relationship information is configured for the second SRS resources where multiple second SRS ports corresponding to the same first SRS port are located.

33. The device according to claim 29, characterized in that Further included: A receiving module, configured to receive SRS sent by the terminal device according to at least one first SRS resource and at least one second SRS resource, wherein the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device, and the receiving beam are determined by the apparatus according to the SRS; The at least one first SRS resource and the at least one second SRS resource are configured by the apparatus.

34. The device according to claim 30, characterized in that, Further included: A receiving module, configured to receive SRS sent by the terminal device according to at least one first SRS resource and at least one second SRS resource, wherein the first receiving antenna port of the terminal device, the second receiving antenna port of the terminal device, and the receiving beam are determined by the apparatus according to the SRS; The at least one first SRS resource and the at least one second SRS resource are configured by the apparatus.

35. The device according to any one of claims 28-34, characterized in that, Further included: A receiving module, configured to receive antenna information from the terminal device before the processing module generates the indication information, where the antenna information corresponds to the first subset, and the first subset is one of multiple subsets, and different antenna information corresponds to the multiple subsets.

36. The device according to claim 35, wherein The antenna information includes one or more of the following: the number of transmit RF channels, the number of receive RF channels, the total number of antenna ports, and the number of analog beams; wherein one analog beam is generated by at least two antenna ports.

37. A communication device, characterized in that, Including: At least one processor; And a memory and a communication interface communicatively connected to the at least one processor; Wherein, the memory stores instructions executable by the at least one processor, and the at least one processor, by executing the instructions stored in the memory, causes the apparatus to execute the method according to any one of claims 1-9, or causes the apparatus to execute the method according to any one of claims 10-18.

38. A computer-readable storage medium, characterized in that, Including a program or instructions, when the program or instructions run on a computer, causing the method according to any one of claims 1-9 to be executed, or causing the method according to any one of claims 10-18 to be executed.

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