A beam pair training method and communication device

Abstract

The present application discloses a beam pair training method and a communication device, the method comprising: receiving configuration information sent by a network device, the configuration information being used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; measuring a downlink reference signal sent by the network device based on the downlink reference signal resource set through a first antenna panel of a terminal device; sending a first uplink reference signal to the network device based on the first uplink reference signal resource set through a second antenna panel of the terminal device, the first antenna panel being different from the second antenna panel. Based on the scheme provided by the present application, it is advantageous to train to obtain a co-receiving beam pair or a co-transmitting beam pair composed of beams generated by different antenna panels of a terminal device.

Description

Technical Field

[0001] The present invention relates to the field of terminal technology, and in particular to a beam pair training method and a communication device. Background Art

[0002] In high-frequency communication systems, in order to overcome path loss, networks and terminals usually use directional high-gain antenna arrays to form analog beams for communication. Generally speaking, analog beams are directional, and a simulated beam shape (beam pattern) can be described by the main lobe direction and the 3dB beam width. Among them, the narrower the beam width, the greater the antenna gain. Network equipment and terminal equipment can transmit data in a specific direction through analog beams. In order to improve the transmission capacity or the robustness of transmission, the terminal equipment can transmit data through a co-transmitting beam pair or a co-receiving beam pair. The so-called co-transmitting beam pair of the terminal device refers to the transmitting beams of two terminal devices that transmit at the same time. The so-called co-receiving beam pair of the terminal device refers to the receiving beams of two terminal devices that receive at the same time. In order to further improve the robustness of data transmission, the terminal device needs to transmit data through a co-receiving beam pair / co-transmitting beam pair composed of beams generated by different antenna panels. However, it is currently impossible to train the terminal device to obtain a co-receiving beam pair / co-transmitting beam pair composed of beams generated by different antenna panels. Summary of the invention

[0003] The present application provides a beam pair training method and a communication device, which are conducive to training a terminal device to obtain a co-receiving beam pair or a co-transmitting beam pair composed of beams generated by different antenna panels.

[0004] In a first aspect, the present application provides a beam pair training method, the method comprising: receiving configuration information sent by a network device, the configuration information being used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; measuring a downlink reference signal sent by the network device based on the downlink reference signal resource set through a first antenna panel of a terminal device; and sending a first uplink reference signal to the network device based on the first uplink reference signal resource set through a second antenna panel of the terminal device, the first antenna panel being different from the second antenna panel.

[0005] Based on the method described in the first aspect, uplink beam training and downlink beam training can be performed through different antenna panels of the terminal device to train and obtain the optimal receiving beam and the optimal transmitting beam of the different antenna panels of the terminal device, so that the same receiving beam pair or the same transmitting beam pair composed of the beams generated by the different antenna panels of the terminal device can be obtained based on the optimal receiving beam and the optimal transmitting beam of the different antenna panels of the terminal device. It can be seen that based on the method described in the first aspect, it is conducive to training and obtaining the same receiving beam pair or the same transmitting beam pair composed of the beams generated by the different antenna panels of the terminal device.

[0006] In a possible implementation, first indication information can also be fed back to the network device based on the measurement result of the downlink reference signal, and the first indication information includes information for indicating the first downlink reference signal resource in the downlink reference signal resource set; after sending the first uplink reference signal to the network device based on the first uplink reference signal resource set through the second antenna panel of the terminal device, second indication information sent by the network device can also be received, and the second indication information is used to indicate the same receiving beam pair and / or the same transmitting beam pair of the terminal device, the same receiving beam pair includes the first receiving beam and the second receiving beam, the same transmitting beam pair includes the first transmitting beam and the second transmitting beam, the first receiving beam is the receiving beam of the first downlink reference signal resource, the second transmitting beam is the transmitting beam determined by the network device based on the measurement result of the first uplink reference signal, the second receiving beam is the receiving beam corresponding to the second transmitting beam, and the first transmitting beam is the transmitting beam corresponding to the first receiving beam. Based on this possible implementation method, it is possible to train the same receiving beam pair or the same transmitting beam pair composed of beams generated by different antenna panels of the terminal device.

[0007] In a possible implementation, the co-receiving beam pair and / or co-transmitting beam pair of the terminal device can be indicated by the identification of the transmission configuration index state (TCI state). Based on this implementation, the co-receiving beam pair and / or co-transmitting beam pair of the terminal device can be indicated more accurately.

[0008] In a possible implementation, the reference signal (referenceSignal) of the TCIstate corresponding to the TCI state identifier for indicating the same receiving beam pair of the terminal device includes two reference signal resource identifiers, one of which is the uplink reference signal resource identifier SRS-ResourceId, for example, used to indicate SRS resource#1, and the other is the downlink reference signal resource identifier NZP-CSI-RS-ResourceId, for example, used to indicate CSI-RS resource#1. The TCI state also includes QCL type E, which is used to indicate the same receiving beam pair. Based on this implementation, the content included in the TCI state is redefined so that the TCIstate identifier can indicate the same receiving beam pair.

[0009] In a possible implementation, the reference signal (referenceSignal) of the TCIstate corresponding to the TCI state identifier for indicating the same-transmitting beam pair of the terminal device includes two reference signal resource identifiers, one of which is the uplink reference signal resource identifier SRS-ResourceId, for example, used to indicate SRS resource#1, and the other is the downlink reference signal resource identifier NZP-CSI-RS-ResourceId, for example, used to indicate CSI-RS resource#1. The TCI state also includes a QCL type F for indicating the same-transmitting beam pair. Based on this implementation, the content included in the TCI state is redefined so that the TCIstate identifier can indicate the same-transmitting beam pair.

[0010] In a possible implementation, the identifier of the TCI state used to indicate the same transmitting beam pair and the identifier of the TCI state used to indicate the same receiving beam pair may also be the identifier of the same TCI state. In this case, the QCL type in the TCI state is used to indicate that the transmitting beam and the receiving beam are consistent with respect to the spatial domain parameters.

[0011] In a possible implementation, the first indication information may not be sent and the second indication information may not be received. The terminal device may receive the third indication information sent by the network device, and the third indication information is used to indicate the optimal transmission beam of the second antenna panel of the terminal device obtained by uplink beam training or to indicate the receiving beam corresponding to the optimal transmission beam. After the terminal device receives the third indication information, it determines the same transmission beam pair and / or the same reception beam pair based on the third indication information and the first downlink reference signal resource (i.e., the downlink reference signal resource corresponding to the optimal reception beam of the first antenna panel). Based on this possible implementation, the network device only needs to indicate one beam to the terminal device, and the terminal device can accurately determine the same transmission beam pair and / or the same reception beam pair.

[0012] In one possible implementation, the transmit beam used to send the first uplink reference signal is determined based on the receive beam of the first downlink reference signal resource. That is, the receive beam of the first downlink reference signal resource is a beam reference for the transmit beam of the terminal device to send the first uplink reference signal, and the transmit beam used for uplink beam training is determined based on the optimal receive beam obtained through training. The transmit beam used to send the first uplink reference signal may be the transmit beam with the highest correlation with the receive beam of the first downlink reference signal resource, so that the co-transmit beam pair and / or the co-receive beam pair obtained through training can be used to transmit the same data, which is beneficial to increase the transmission capacity. Alternatively, the transmit beam used to send the first uplink reference signal may be the transmit beam with the lowest correlation with the receive beam of the first downlink reference signal resource, so that the co-transmit beam pair and / or the co-receive beam pair obtained through training can be beneficial to increase the reliability of data transmission when transmitting different data.

[0013] In a possible implementation, a downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set corresponding to the channel measurement resource set, a first downlink reference signal resource is a first channel measurement resource, the first channel measurement resource corresponds to a first interference measurement resource, and a transmit beam used to send a first uplink reference signal is determined based on a transmit beam used by a network device to send the first interference measurement resource. By implementing this implementation, it is helpful to reduce interference between trained co-receive beam pairs and / or co-transmit beam pairs.

[0014] In a possible implementation, the terminal device activates one of the first antenna panel and the second antenna panel at the same time. That is, the first antenna panel and the second antenna panel are not activated at the same time, which is conducive to reducing the complexity and power consumption of the terminal device.

[0015] In a possible implementation, the time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device. By implementing this possible implementation, it can be ensured that the first antenna panel and the second antenna panel are not activated at the same time, which is conducive to reducing the complexity and power consumption of the terminal device.

[0016] In a possible implementation, the configuration information is also used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal. Optionally, the configuration information may indicate the antenna panel used to measure the downlink reference signal, and the antenna panel used to send the first uplink reference signal may be pre-specified by the protocol. Alternatively, the configuration information may indicate the antenna panel used to send the first uplink reference signal, and the antenna panel used to measure the downlink reference signal may be pre-specified by the protocol. Alternatively, the configuration information is used to indicate the antenna panel used to measure the downlink reference signal and the antenna panel used to send the first uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training.

[0017] In a possible implementation, the configuration information is also used to indicate the use of different antenna panels to measure the downlink reference signal and send the first uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels to perform uplink beam training and downlink beam training.

[0018] In a possible implementation, the configuration information is also used to configure a second uplink reference signal resource set associated with the downlink reference signal resource set, and a second uplink reference signal can also be sent to the network device through the first antenna panel based on the second uplink reference signal resource set, and the transmit beam used to send the second uplink reference signal is determined based on the receive beam of the first downlink reference signal resource, and the first downlink reference signal resource is determined from the downlink reference signal resource set based on the measurement result of the downlink reference signal. The optimal receive beam found through downlink beam training is not necessarily suitable as one of the transmit beams in the uplink co-transmit beam pair of the terminal device, so in this possible implementation, uplink beam training is also performed for the optimal receive beam transmission, which is conducive to training the optimal terminal-side co-transmit beam pair and / or co-receive beam pair.

[0019] In a possible implementation, second indication information sent by a network device is received, and the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of a terminal device, the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, the co-receiving beam pair includes a first receiving beam corresponding to the first transmitting beam and a second receiving beam corresponding to the second transmitting beam, the first transmitting beam is a transmitting beam determined by the network device based on a measurement result of a first uplink reference signal, and the second transmitting beam is a transmitting beam determined by the network device based on a measurement result of a second uplink reference signal. Based on this possible implementation, the terminal device can obtain its co-receiving beam pair and / or co-transmitting beam pair.

[0020] In a possible implementation, the time of sending the first uplink reference signal is the same as the time of sending the second uplink reference signal. Based on this possible implementation, it is helpful for the network device to more accurately determine the co-transmitting beam pair and / or the co-receiving beam pair of the terminal device.

[0021] In a possible implementation, the configuration information is also used to indicate the antenna panel used for measuring the downlink reference signal and sending the second uplink reference signal, and / or to indicate the antenna panel used for sending the first uplink reference signal. Optionally, the configuration information may indicate the antenna panel used for measuring the downlink reference signal and the antenna panel used for sending the second uplink reference signal, and the antenna panel used for sending the first uplink reference signal may be pre-specified by the protocol. Alternatively, the configuration information may indicate the antenna panel used for sending the first uplink reference signal, and the antenna panel used for measuring the downlink reference signal and the antenna panel used for sending the second uplink reference signal may be pre-specified by the protocol. Alternatively, the configuration information is used to indicate the antenna panel used for measuring the downlink reference signal, the antenna panel used for sending the second uplink reference signal, and the antenna panel used for sending the first uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training.

[0022] In a possible implementation, the configuration information is also used to indicate the use of the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to indicate the terminal device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training.

[0023] In a possible implementation, capability information of the terminal device may be reported, where the capability information indicates whether the terminal device supports the method in the first aspect or a possible implementation manner of the first aspect.

[0024] In a possible implementation, the protocol predefines or the network device may instruct the terminal device to execute the method in the first aspect or a possible implementation manner of the first aspect.

[0025] In the methods described in the above first aspect and possible implementation manners of the first aspect, the execution subject may be a terminal device or a chip in the terminal device.

[0026] In a second aspect, the present application provides a beam pair training method, the method comprising: sending configuration information to a terminal device, the configuration information being used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; sending a downlink reference signal to the terminal device based on the downlink reference signal resource set; receiving first indication information fed back by the terminal device, the first indication information comprising information for indicating a first downlink reference signal resource in the downlink reference signal resource set; measuring a first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set; sending second indication information to the terminal device, the second indication information being used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the terminal device, the co-receiving beam pair comprising a first receiving beam and a second receiving beam, the co-transmitting beam pair comprising a first transmitting beam and a second transmitting beam, the first receiving beam being a receiving beam of the first downlink reference signal resource, the second transmitting beam being a transmitting beam determined based on a measurement result of the first uplink reference signal, the second receiving beam being a receiving beam corresponding to the second transmitting beam, and the first transmitting beam being a transmitting beam corresponding to the first receiving beam.

[0027] In one possible implementation, the time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device.

[0028] In a possible implementation, the configuration information is also used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal. For how the configuration information specifically indicates, please refer to the corresponding description in the first aspect above, which will not be repeated here.

[0029] In a possible implementation, the configuration information is further used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

[0030] In a possible implementation, the co-receiving beam pair and / or co-transmitting beam pair of the terminal device can be specifically indicated by the TCI state identifier. Based on this implementation, it is helpful to more accurately indicate the co-receiving beam pair and / or co-transmitting beam pair of the terminal device. Among them, the content included in the TCI state corresponding to the TCI state identifier used to indicate the co-receiving beam pair of the terminal device can be found in the corresponding description in the above-mentioned first aspect, which is not repeated here.

[0031] In a possible implementation, instead of receiving the first indication information and sending the second indication information, a third indication information may be sent to the terminal device, and the third indication information is used to indicate the optimal transmission beam of the second antenna panel of the terminal device obtained by uplink beam training or to indicate the receiving beam corresponding to the optimal transmission beam. Thus, after the terminal device receives the third indication information, it determines the same transmission beam pair and / or the same reception beam pair based on the third indication information and the first downlink reference signal resource (i.e., corresponding to the optimal reception beam of the first antenna panel). Based on this possible implementation method, it is beneficial for the terminal device to accurately determine the same transmission beam pair and / or the same reception beam pair.

[0032] In a possible implementation, capability information of a reported terminal device may be received, where the capability information indicates whether the terminal device supports the method in the first aspect or a possible implementation manner of the first aspect.

[0033] In a possible implementation, the protocol predefines or the network device may instruct the terminal device to execute the method in the first aspect or a possible implementation manner of the first aspect.

[0034] In the method described in the second aspect and possible implementation manner of the second aspect, the execution subject may be a network device or a chip in the network device.

[0035] In a third aspect, the present application provides a beam pair training method, the method comprising: sending configuration information to a terminal device, the configuration information being used to configure a downlink reference signal resource set and a first uplink reference signal resource set and a second uplink reference signal resource set associated with the downlink reference signal resource set; sending a downlink reference signal to the terminal device based on the downlink reference signal resource set; measuring the first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set; measuring the second uplink reference signal sent by the terminal device based on the second uplink reference signal resource set; sending second indication information to the terminal device, the second indication information being used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the terminal device, the co-transmitting beam pair comprising a first transmitting beam and a second transmitting beam, the co-receiving beam pair comprising a first receiving beam corresponding to the first transmitting beam and a second receiving beam corresponding to the second transmitting beam, the first transmitting beam being a transmitting beam determined based on a measurement result of the first uplink reference signal, and the second transmitting beam being a transmitting beam determined based on a measurement result of the second uplink reference signal.

[0036] In a possible implementation, the configuration information is also used to indicate the antenna panel used to measure the downlink reference signal and send the second uplink reference signal, and / or to indicate the antenna panel used to send the first uplink reference signal. For how the configuration information specifically indicates, please refer to the corresponding description in the first aspect above, which will not be repeated here.

[0037] In a possible implementation, the configuration information is also used to indicate the use of the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to indicate the terminal device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal.

[0038] In a possible implementation, the co-receiving beam pair and / or co-transmitting beam pair of the terminal device can be specifically indicated by the TCI state identifier. Based on this implementation, it is helpful to more accurately indicate the co-receiving beam pair and / or co-transmitting beam pair of the terminal device. Among them, the content included in the TCI state corresponding to the TCI state identifier used to indicate the co-receiving beam pair of the terminal device can be found in the corresponding description in the above-mentioned first aspect, which is not repeated here.

[0039] In a possible implementation, capability information of a reported terminal device may be received, where the capability information indicates whether the terminal device supports the method in the first aspect or a possible implementation manner of the first aspect.

[0040] In a possible implementation, the protocol predefines or the network device may instruct the terminal device to execute the method in the first aspect or a possible implementation manner of the first aspect.

[0041] In the methods described in the third aspect and possible implementation manners of the third aspect, the execution entity may be a network device or a chip in the network device.

[0042] The beneficial effects of the second and third aspects can refer to the beneficial effects of the first aspect and will not be repeated here.

[0043] In a fourth aspect, the present application provides a communication device, which may be a terminal device, or a device in a terminal device, or a device that can be used in combination with a terminal device. The communication device may also be a chip system. The communication device may execute the method described in the first aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units corresponding to the above functions. The unit may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the first aspect above, and the repetitive parts will not be repeated.

[0044] In a fifth aspect, the present application provides a communication device, which may be a network device, a device in a network device, or a device that can be used in combination with a network device. The communication device may also be a chip system. The communication device may execute the method described in the second aspect or the third aspect. The functions of the communication device may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions. The unit may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the second aspect or the third aspect above, and the repetitive parts will not be repeated.

[0045] In a sixth aspect, the present application provides a communication device, comprising a processor, and when the processor calls a computer program in a memory, the method described in any one of the first aspect to the third aspect is executed.

[0046] In the seventh aspect, the present application provides a communication device, which includes a processor and a memory, the memory being used to store computer-executable instructions; the processor being used to execute the computer-executable instructions stored in the memory, so that the communication device executes a method as described in any one of the first aspect to the third aspect.

[0047] In an eighth aspect, the present application provides a communication device, comprising a processor, a memory and a transceiver, wherein the transceiver is used to receive or send signals; the memory is used to store program codes; and the processor is used to call the program code from the memory to execute a method as described in any one of the first to third aspects.

[0048] In a ninth aspect, the present application provides a communication device, comprising a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute a method as described in any one of the first to third aspects.

[0049] In a tenth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store instructions, and when the instructions are executed, the method described in any one of the first aspect to the third aspect is implemented.

[0050] In an eleventh aspect, the present application provides a computer program product comprising instructions, which, when executed, enables the method described in any one of the first to third aspects to be implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0052] Figure 2 It is a flowchart of a beam pair training method provided in an embodiment of the present application;

[0053] Figure 3 is a schematic diagram of configuration information provided by an embodiment of the present application;

[0054] Figure 4 is a schematic diagram of another configuration information provided in an embodiment of the present application;

[0055] Figure 5 is a schematic diagram of a beam pair training process provided in an embodiment of the present application;

[0056] Figure 6 is a flowchart of another beam pair training method provided in an embodiment of the present application;

[0057] Figure 7 is a schematic diagram of another beam pair training process provided in an embodiment of the present application;

[0058] Figure 8 It is a flowchart of another beam pair training method provided in an embodiment of the present application;

[0059] Fig. 9 is a schematic diagram of another configuration information provided in an embodiment of the present application;

[0060] Fig.10 is a schematic diagram of another configuration information provided in an embodiment of the present application;

[0061] Fig.11 is a schematic diagram of another beam pair training process provided in an embodiment of the present application;

[0062] Fig.12 This is a schematic diagram of a TCI state in the current standard;

[0063] Fig.13 is a schematic diagram of a TCI state provided in an embodiment of the present application;

[0064] Fig.14 is a schematic diagram of another TCI state provided in an embodiment of the present application;

[0065] Fig.15 is a structural diagram of a communication device provided in an embodiment of the present application;

[0066] Fig.16a is a structural diagram of another communication device provided in an embodiment of the present application;

[0067] Fig.16bIt is a structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0068] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0069] The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of operations or units is not limited to the listed operations or units, but may optionally include operations or units that are not listed, or may optionally include other operations or units that are inherent to these processes, methods, products or devices.

[0070] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0071] In the present application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the corresponding relationship of corresponding objects, indicating that there may be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the corresponding objects before and after are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0072] In order to better understand the embodiment of the present application, the system architecture of the embodiment of the present application is first described below:

[0073] The method provided in the embodiments of the present application can be applied to various communication systems, for example, an Internet of Things (IoT) system, a narrowband Internet of Things (NB-IoT) system, a long term evolution (LTE) system, a fifth-generation (5G) communication system, an LTE and 5G hybrid architecture, a 5G new radio (NR) system, and new communication systems that will emerge in future communication developments.

[0074] Figure 1 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application, and the solution in the present application can be applied to the communication system. The communication system may include at least one network device and at least one terminal device. Figure 1 For example, a communication system includes a network device and a terminal device. The network device includes one or more antenna panels, and the terminal device includes multiple antenna panels. Each antenna panel can send one or more beams. The network device and the terminal device communicate via beams. For example, Figure 1 As shown, the network device can transmit transmission beams a1 to a4 through the antenna panel, and the terminal device can transmit reception beams b1 to b4 through the antenna panel. The network device can perform downlink communication with the reception beam of the terminal device through the transmission beam. Of course, the terminal device can also include one or more transmission beams, and the network device can also include one or more reception beams. The terminal device can perform uplink communication with the reception beam of the network device through the transmission beam.

[0075] The antenna panel in the embodiment of the present application may also be referred to as an antenna group. An antenna group is a set of multiple antennas. One antenna panel may correspond to one antenna group, or, in another embodiment, one antenna panel may correspond to multiple antenna groups, that is, multiple antenna groups are located on the same antenna panel.

[0076] The network device involved in the embodiment of the present application is an entity for transmitting or receiving signals on the network side, which can be used to convert received air frames and Internet Protocol (IP) packets to each other, as a router between the terminal device and the rest of the access network, wherein the rest of the access network may include IP networks, etc. The network device can also coordinate the attribute management of the air interface. For example, the network device can be an evolutionary Node B (eNB or e-NodeB) in LTE, or a new radio controller (NR controller), a gNode B (gNB) in a 5G system, a centralized unit, a new wireless base station, a radio frequency remote module, a micro base station, a relay, a distributed unit, a transmission reception point (TRP) or a transmission point (TP) or any other wireless access device, but the embodiment of the present application is not limited thereto.

[0077] The terminal device involved in the embodiments of the present application is an entity on the user side for receiving or transmitting signals. The terminal device may be a device that provides voice and / or data connectivity to a user, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device may also be other processing devices connected to a wireless modem. The terminal device may communicate with a radio access network (RAN). The terminal device may also be referred to as a wireless terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment (UE), etc. The terminal device may be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with a wireless access network. For example, the terminal device may also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. Common terminal devices include, for example, mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, etc., but the embodiments of the present application are not limited thereto.

[0078] In order to improve the robustness (i.e., reliability) of data transmission, the terminal device needs to train the same-receive beam pair / the same-transmit beam pair composed of beams generated by different antenna panels, and transmit data through the trained same-receive beam pair / the same-transmit beam pair. Among them, the same-receive beam pair is a beam pair for simultaneously receiving data. The same-transmit beam pair is a beam pair for simultaneously sending data. The same-receive beam pair can be composed of two or more receiving beams. The same-transmit beam pair can be composed of two or more transmitting beams. For example, the optimal same-receive beam pair obtained by training the terminal device is the same-receive beam pair composed of beam b1 of antenna panel 1 and beam b4 of antenna panel 2. The terminal device uses beam b1 of antenna panel 1 and beam b4 of antenna panel 2 to simultaneously receive the same data, which can improve the robustness of data transmission. However, how to train the same-receive beam pair / the same-transmit beam composed of beams generated by different antenna panels for the terminal device is a problem that needs to be solved urgently.

[0079] The embodiment of the present application provides a beam pair training method and a communication device, which is conducive to training a terminal device to obtain a co-receiving beam pair or a co-transmitting beam pair composed of beams generated by different antenna panels. The beam pair training method provided in the embodiment of the present application is further described in detail below:

[0080] See also Figure 2 , Figure 2 FIG. 1 is a flow chart of a beam pair training method provided in an embodiment of the present application. Figure 2 As shown, the beam pair training method includes the following operations 201 to 205. Figure 2 The execution subject of the method shown may be a network device and a terminal device, or the subject may be a chip in the network device and a chip in the terminal device. Figure 2 The network device and the terminal device are used as the execution subjects of the method for illustration. The execution subjects of the beam pair training method shown in other figures of the embodiment of the present application are similar, and will not be repeated in the following text. Among them:

[0081] 201. A network device sends configuration information to a terminal device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set.

[0082] Among them, the network device can send the configuration information through radio resource control (RRC) signaling. Optionally, the downlink reference signal resource set configured by the configuration information includes one or more. The one or more downlink reference signal resource sets are associated with a first uplink reference signal resource set. A downlink reference signal resource set includes one or more downlink reference signal resources, and the first uplink reference signal resource set includes one or more uplink reference signal resources. Optionally, the downlink reference signal can be a channel status information reference signal (CSI-RS). When the CSI-RS is used for channel measurement, it can be called a channel measurement resource (CMR), and when the CSI-RS is used for interference measurement, it can be called an interference measurement resource (IMR). Alternatively, the downlink reference signal can also be a cell reference signal (CRS), a demodulation reference signal (DMRS), a multicast broadcast single frequency network (MBSFN) reference signal or a position reference signal (P-RS), etc. The uplink reference signal may be a sounding reference signal (SRS) or a DMRS.

[0083] The configuration information may specifically include the following two forms.

[0084] Form 1: The configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set. The downlink reference signal resource set includes a channel measurement resource set used for channel measurement.

[0085] Example 1: Take the downlink reference signal resource set as a CSI-RS resource set and the first uplink reference signal resource set as an SRS resource set as an example. Figure 3As shown, the network device sends a configuration information through RRC signaling, and the configuration information includes a reporting setting (ReportConfig#1). The reporting amount is CRI-RSRP (i.e. beam indication-beam quality, which can also be called channel state information reference signal resource indication-reference signal received power). And the reporting setting (ReportConfig#1) corresponds to the channel measurement resource setting (ResourceConfig#1), and its function is marked as channel measurement (resources for channel measurement).

[0086] The channel measurement resource setting (ResourceConfig#1) includes a resource set list (ResourceSetList), wherein the resource set list includes M (>=1) resource sets. For example, including CSI-RS resource set #1 (CSI-RS resource set#1) and the like. CSI-RS resource set #1 (CSI-RS resource set#1) includes Y (>=1) CSI-RS resources. For example, CSI-RS resource set #1 (CSI-RS resource set#1) includes CSI-RS resource #1 (CSI-RS resource#1) and CSI-RS resource #2 (CSI-RS resource#2). Among them, the resource set included in the channel measurement resource setting is the downlink reference signal resource set.

[0087] The reporting configuration (ReportConfig#1) is associated with SRS resource set #1, and the CSI-RS resource set included in the channel measurement resource configuration is associated with SRS resource set #1. For example, the SRS resource set #1 includes Z (>=1) SRS resources, and the SRS resource set #1 includes SRS resource #1 and SRS resource #2.

[0088] Form 2: The configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set. The downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set.

[0089] Example 2: Take the downlink reference signal resource set as a CSI-RS resource set and the first uplink reference signal resource set as an SRS resource set as an example. Figure 4As shown, the network device configures a reporting setting (ReportConfig#1) whose reporting quantity is CRI-SINR (Channel State Information Reference Signal Resource Indicator-Signal to Interference and Noise Ratio). The reporting setting (ReportConfig#1) corresponds to two resource settings (ResourceConfig), namely, channel measurement resource setting (ResourceConfig#1) and interference measurement resource setting (ResourceConfig#2). The channel measurement resource setting, whose function is marked as channel measurement (resources for channel measurement). The interference measurement resource setting, whose function is marked as interference measurement (resources for interference measurement).

[0090] RsourceConfig#1 includes a resource set list (ResourceSetList), wherein the resource set list includes M (>=1) resource sets. For example, it includes CSI-RS resource set #1 (CSI-RS resource set#1), etc. RsourceConfig#2 also includes a resource set list (ResourceSetList), wherein the resource set list includes N (>=1) resource sets, for example, it includes CSI-RS resource set #2 (CSI-RS resource set#2), etc. CSI-RS resource set #1 (CSI-RS resource set#1) includes Y (>=1) channel measurement resources (channel measurement resource, abbreviated as CMR). For example, CSI-RS resource set #1 (CSI-RS resourceset#1) includes CSI-RS resource #1 (CSI-RS resource#1) and CSI-RS resource #2 (CSI-RS resource#2). CSI-RS resource set #2 includes Y (>=1) interference measurement resources (IMRs). For example, CSI-RS resource set #2 includes CSI-RS resource #11 and CSI-RS resource #12. Among them, CSI-RS resource #1 is associated with CSI-RS resource #11, and CSI-RS resource #2 is associated with CSI-RS resource #12.

[0091] The reporting configuration (ReportConfig#1) is associated with SRS resource set #1, and the CSI-RS resource set included in the channel measurement resource configuration (ResourceConfig#1) and the interference measurement resource configuration (ResourceConfig#2) is associated with SRS resource set #1. For example, the SRS resource set #1 includes Z (>=1) SRS resources, and the SRS resource set #1 includes SRS resource #1 and SRS resource #2.

[0092] 202. The network device sends a downlink reference signal to the terminal device based on a downlink reference signal resource set.

[0093] In an embodiment of the present application, after the network device sends configuration information to the terminal device, it sends a downlink reference signal to the terminal device based on a downlink reference signal resource set.

[0094] 203. The terminal device measures the downlink reference signal sent by the network device based on the downlink reference signal resource set through the first antenna panel of the terminal device.

[0095] In an embodiment of the present application, after the terminal device receives the configuration information sent by the network device, the terminal device measures the downlink reference signal sent by the network device based on the downlink reference signal resource set through the first antenna panel of the terminal device.

[0096] 204. The terminal device sends a first uplink reference signal to the network device based on a first uplink reference signal resource set through a second antenna panel of the terminal device, where the first antenna panel is different from the second antenna panel.

[0097] In an embodiment of the present application, after the terminal device receives the configuration information sent by the network device, the terminal device sends a first uplink reference signal to the network device based on the first uplink reference signal resource set through the second antenna panel of the terminal device.

[0098] Operation 202 and operation 203 may be performed before, after, or simultaneously with operation 204 and operation 205 .

[0099] 205. The network device measures the first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set.

[0100] In the embodiment of the present application, after the network device sends configuration information to the terminal device, the network device measures the first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set. The antenna panels used by the network device to send the downlink reference signal and measure the first uplink reference signal may be the same or different.

[0101] For example, a network device is configured with Figure 3 The downlink reference signal resource set and the first uplink reference signal resource set are shown. Figure 5 As shown, the network device sends CSI-RS#1 in CSI-RS resource#1 and sends CSI-RS#2 in CSI-RSresource#2. Accordingly, the terminal device measures CSI-RS#1 in CSI-RSresource#1 through the receiving beam b1 of the antenna panel 1. The terminal device measures CSI-RS#2 in CSI-RS resource#2 through the receiving beam b2 of the antenna panel 1. That is, the terminal device performs downlink beam training through the antenna panel 1 to determine an optimal receiving beam from the antenna panel 1.

[0102] And the terminal device transmits SRS#1 in SRS resource#1 through the transmit beam b3 of antenna panel 2. The terminal device transmits SRS#2 in SRS resource#2 through the transmit beam b4 of antenna panel 2. Accordingly, the network device measures SRS#1 in SRSresource#1 and measures SRS#2 in SRS resource#2. That is, the terminal device performs uplink beam training through antenna panel 2 to determine an optimal transmit beam from antenna panel 2.

[0103] After determining the optimal receiving beam and the optimal transmitting beam of the terminal device, the transmitting beam corresponding to the optimal receiving beam and the optimal transmitting beam can be combined into a co-transmitting beam pair of the terminal device. Alternatively, after determining the optimal receiving beam and the optimal transmitting beam of the terminal device, the receiving beam corresponding to the optimal transmitting beam and the optimal receiving beam can be combined into a co-receiving beam pair of the terminal device. For example, the optimal receiving beam in antenna panel 1 obtained through training is receiving beam b2, and the optimal transmitting beam in antenna panel 2 is transmitting beam b4, then the transmitting beam corresponding to receiving beam b2 and transmitting beam b4 can be determined as the co-transmitting beam pair of the terminal device. The receiving beam corresponding to transmitting beam b4 and receiving beam b2 are determined as the co-receiving beam pair of the terminal device. The transmitting beam corresponding to receiving beam b2 refers to: a transmitting beam whose beam transmitting direction is the same as the beam receiving direction of receiving beam b2, or the transmitting beam corresponding to receiving beam b2 refers to: a transmitting beam that uses the same spatial domain transmission filter as receiving beam b2 for transmission. The receiving beam corresponding to the transmitting beam b4 refers to: a receiving beam whose beam receiving direction is the same as the beam transmitting direction of the transmitting beam b4, or, the receiving beam corresponding to the transmitting beam b4 refers to: a receiving beam that uses the same spatial domain transmission filter as the transmitting beam b4 for transmission.

[0104] In one possible implementation, the terminal device may report capability information indicating whether the terminal device supports Figure 2 The method described in the corresponding embodiment.

[0105] In a possible implementation, the protocol predefines or the network device can instruct the terminal device to execute Figure 2 The method described in the corresponding embodiment.

[0106] By implementing Figure 2 The described method can perform uplink beam training and downlink beam training through different antenna panels of the terminal device to train and obtain the optimal receiving beam and the optimal transmitting beam of the different antenna panels of the terminal device, so that the same receiving beam pair or the same transmitting beam pair composed of the beams generated by the different antenna panels of the terminal device can be obtained based on the optimal receiving beam and the optimal transmitting beam of the different antenna panels of the terminal device. Figure 2 The described method is conducive to training to obtain a co-receiving beam pair or a co-transmitting beam pair composed of beams generated by different antenna panels of a terminal device.

[0107] See also Figure 6 , Figure 6 FIG. 1 is a flow chart of another beam pair training method provided in an embodiment of the present application. Figure 6 As shown, the beam pair training method includes the following operations 601 to 607. Among them:

[0108] 601. A network device sends configuration information to a terminal device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set.

[0109] 602. The network device sends a downlink reference signal to the terminal device based on a downlink reference signal resource set.

[0110] 603. The terminal device measures the downlink reference signal sent by the network device based on the downlink reference signal resource set through the first antenna panel of the terminal device.

[0111] In an embodiment of the present application, after the terminal device receives the configuration information sent by the network device, the terminal device measures the downlink reference signal sent by the network device based on the downlink reference signal resource set through the first antenna panel of the terminal device.

[0112] The specific implementation of operations 601 to 603 may refer to the above operations 201 to 203, which will not be described in detail here.

[0113] 604. The terminal device feeds back first indication information to the network device based on the measurement result of the downlink reference signal, where the first indication information includes information for indicating a first downlink reference signal resource in the downlink reference signal resource set.

[0114] In an embodiment of the present application, after the terminal device measures the downlink reference signal sent by the network device, it feeds back the first indication information to the network device based on the measurement result of the downlink reference signal. Among them, the first downlink reference signal resource is a downlink reference signal resource for channel measurement. The first downlink reference signal resource can be a resource of the downlink reference signal for channel measurement with the best quality in the downlink reference signal resource set. Alternatively, the first downlink reference signal resource can be a resource of a downlink reference signal for channel measurement in the downlink reference signal resource set whose quality exceeds a threshold. It can be understood that the first downlink reference signal resource is a downlink reference signal resource for channel measurement corresponding to the optimal receiving beam of the terminal device obtained by downlink beam training.

[0115] In a possible implementation, the first indication information may include, in addition to information used to indicate the first downlink reference signal resource in the downlink reference signal resource set, one or more of the following three types of information:

[0116] 1. Information related to the signal quality of the reference signal corresponding to the first downlink reference signal resource. For example, the first indication information may also include reference signal received power (RSRP), signal to interference and noise ratio (SINR), or reference signal receiving quality (RSRQ).

[0117] 2. Information used to indicate channel information obtained by the terminal device through the reference signal corresponding to the first downlink reference signal resource. For example, the first indication information may also include a rank indicator (RI), a precoding matrix indicator (PMI), a channel quality indicator (CQI) or a layer indicator (LI).

[0118] 3. Used to indicate information related to a downlink channel matrix obtained by the terminal device through the reference signal measurement corresponding to the first downlink reference signal resource, and / or information related to an uplink channel matrix corresponding to the downlink channel matrix. For example, the first indication information may also include a rank, a determinant, a trace, one or more elements, rows, columns, eigenvalues ​​or eigenvectors of the matrix, etc.

[0119] In a possible implementation, the receiving beam of the first downlink reference signal resource is a beam reference of a transmitting beam for sending the first uplink reference signal by the terminal device.

[0120] 605. The terminal device sends a first uplink reference signal to the network device based on a first uplink reference signal resource set through a second antenna panel of the terminal device, where the first antenna panel is different from the second antenna panel.

[0121] In an embodiment of the present application, after the terminal device receives the configuration information sent by the network device, the terminal device sends a first uplink reference signal to the network device based on the first uplink reference signal resource set through the second antenna panel of the terminal device.

[0122] 606. The network device measures the first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set.

[0123] The specific implementation of operation 605 and operation 606 can refer to the above operation 204 and operation 205, which will not be repeated here. Operation 604 and operation 605 can be performed before, after or simultaneously with operation 602 to operation 604.

[0124] 607. The network device sends second indication information to the terminal device.

[0125] In an embodiment of the present application, after the network device receives the first indication information and measures the first uplink reference signal, the network device sends the second indication information to the terminal device based on the first indication information and the measurement result of the first uplink reference signal. The second indication information is used to indicate the same receiving beam pair and / or the same transmitting beam pair of the terminal device, the same receiving beam pair includes a first receiving beam and a second receiving beam, the same transmitting beam pair includes a first transmitting beam and a second transmitting beam, the first receiving beam is a receiving beam of the first downlink reference signal resource, the second transmitting beam is a transmitting beam determined based on the measurement result of the first uplink reference signal, the second receiving beam is a receiving beam corresponding to the second transmitting beam, and the first transmitting beam is a transmitting beam corresponding to the first receiving beam. It can be understood that the second transmitting beam is the optimal transmitting beam of the terminal device obtained by uplink beam training.

[0126] The receiving beam of the first downlink reference signal resource may also be referred to as a receiving beam corresponding to the first downlink reference signal resource, or a receiving beam associated with the first downlink reference signal resource.

[0127] The receiving beam corresponding to the second transmitting beam refers to a receiving beam having a beam receiving direction that is the same as the beam transmitting direction of the second transmitting beam, or the receiving beam corresponding to the second transmitting beam refers to a receiving beam that is transmitted using the same spatial domain transmission filter as the second transmitting beam. The transmitting beam corresponding to the first receiving beam refers to a receiving beam having a beam transmitting direction that is the same as the beam receiving direction of the first receiving beam, or the transmitting beam corresponding to the first receiving beam refers to a transmitting beam that is transmitted using the same spatial domain transmission filter as the first receiving beam.

[0128] For example, the downlink reference signal resource set configured by the network device is Figure 3 The CSI-RS resource set #1 shown in the figure, the first uplink reference signal resource set configured by the network device is Figure 3 SRS resource set #1 as shown. Figure 7 As shown, the network device sends CSI-RS#1 in CSI-RS resource#1 and sends CSI-RS#2 in CSI-RS resource#2. Accordingly, the terminal device measures CSI-RS#1 in CSI-RS resource#1 through the receiving beam b1 of the antenna panel 1. The terminal device measures CSI-RS#2 in CSI-RS resource#2 through the receiving beam b2 of the antenna panel 1. Based on the measurement results of CSI-RS#1 and CSI-RS#2, the terminal device determines that the reception quality of CSI-RS#1 is the best. Therefore, the terminal device sends a first indication information to the network device, and the first indication information indicates CSI-RS resource#1.

[0129] After the terminal device sends the first indication information to the network device, the terminal device sends SRS#1 at SRS resource#1 through the transmission beam b3 of the antenna panel 2. The terminal device sends SRS#2 at SRSresource#2 through the transmission beam b4 of the antenna panel 2. Accordingly, the network device measures SRS#1 at SRS resource#1 and measures SRS#2 at SRSresource#2. Based on the measurement results of SRS#1 and SRS#2, the network device determines that SRS#1 has the best quality. Therefore, the network device determines that the optimal transmission beam of the terminal device is the transmission beam b3 corresponding to SRS resource#1.

[0130] When data transmission is required subsequently, the network device sends second indication information to the terminal device based on the first indication information and the measurement result of the uplink reference signal. The second indication information indicates the same-transmit beam pair and / or the same-receive beam pair of the terminal device. Among them, the same-transmit beam pair includes the transmit beam b3 and the transmit beam b1 corresponding to the receive beam. The same-receive beam pair includes the receive beam corresponding to the transmit beam b3 and the receive beam b1. Specifically, the network device can indicate the same-receive beam pair and / or the same-transmit beam pair of the terminal device through the identification of the transmission configuration index state (TCI state).

[0131] The following is a relevant introduction on how to indicate the co-receiving beam pair and / or co-transmitting beam pair of the terminal device through the TCI state identifier in the embodiment of the present application. Before introducing how to indicate the co-receiving beam pair and / or co-transmitting beam pair of the terminal device through the TCI state identifier, in order to facilitate the understanding of the format of the second indication information provided in the embodiment of the present application, the TCI state and quasi-co-location (QCL) in the current standard are first introduced:

[0132] 1. TCI state defined in the current standard:

[0133] The TCI state mainly includes the quasi-co-location (QCL) type (such as two different QCL types can be configured) and the reference signal of each QCL type. The reference signal specifically includes the carrier component (CC) identification (ID) or BWP ID where the reference signal is located, and the number of each reference signal resource (ssb-index, or CSI-RS resource index). Fig.12 As shown, the classification of QCL types can be shown as follows:

[0134] QCL typeA: indicates time delay, Doppler shift, delay spread, and Doppler spread, i.e., QCL typeA can be called time-frequency deviation information;

[0135] QCL typeB: indicates Doppler shift and Doppler expansion;

[0136] QCL typeC: indicates time delay and Doppler shift;

[0137] QCL typeD: indicates the spatial reception parameters, that is, the receiving beam.

[0138] 2. QCL defined in current standards:

[0139] The co-location relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics. For multiple resources with a co-location relationship, the same or similar communication configuration can be used. For example, if two antenna ports have a co-location relationship, the large-scale characteristics of the channel for transmitting a symbol on one port can be inferred from the large-scale characteristics of the channel for transmitting a symbol on the other port. The large-scale characteristics may include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receiving parameters, terminal receiving beam number, transmit / receive channel correlation, receiving arrival angle, spatial correlation of receiver antenna, main arrival angle (Angel-of-Arrival, AoA), average arrival angle, extension of AoA, etc. The parameters of quasi-co-location include: at least one of Doppler spread, Doppler shift, average delay, delay spread and spatial reception parameters. QCL relationships can be divided into four categories: 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}; 'QCL-TypeB': {Doppler shift, Doppler spread}; 'QCL-TypeC': {Doppler shift, average delay}; 'QCL-TypeD': {spatial reception parameters}.

[0140] The following is a relevant introduction to indicating the co-receiving beam pair of the terminal device through the TCI state identifier in the embodiment of the present application:

[0141] The network device can configure the beam by configuring the TCI state. The TCI state is generally configured through RRC signaling. The network device can configure one or more TCI states, and when it needs to instruct the terminal device to switch the beam, it can notify the terminal device of the identifier (TCI state ID) of different TCI states.

[0142] In a possible implementation, a typical TCI state contains the following contents: Fig.13 As shown, the most relevant part is the reference signal (referenceSignal) which includes two reference signal resource identifiers, one of which is the uplink reference signal resource identifier SRS-ResourceId, for example, used to indicate SRS resource#1, and the other is the downlink reference signal resource identifier NZP-CSI-RS-ResourceId, for example, used to indicate CSI-RS resource#1.

[0143] In addition, if Fig.13As shown, QCL type E is a newly defined QCL type for the method of this embodiment, which is used to indicate the same receiving beam pair. Among them, the transmit beam and the receive beam are consistent with each other regarding the spatial domain parameters. That is to say, it indicates that the terminal device can use the receive beam corresponding to the transmit beam of SRS for downlink reception. The downlink reception here includes but is not limited to the reception of PDSCH, PDCCH, PDSCH-DMRS, PDCCH-DMRS, and CSI-RS. Since the terminal device in this embodiment uses two antenna panels to receive CSI-RS and send SRS respectively, the reference signal resource identifier of QCL type E may also include a CSI-RS resource identifier and an SRS resource identifier. Based on this implementation, the content included in the TCI state is redefined so that the TCI state identifier can indicate the same receiving beam pair.

[0144] In a possible implementation, the TCI state may also include information such as a TCI state ID, a cell ID and a BWP ID of a reference signal.

[0145] In one possible implementation, when TCI state is used for PDCCH reception, in addition to configuring multiple TCIstates in RRC, the terminal device can also be notified through Medium Access Control-Control Element (MAC-CE) signaling which TCI state corresponding to the TCI state ID needs to be used.

[0146] In one possible implementation, when TCI state is used for PDSCH reception, in addition to configuring multiple TCIstates in RRC, the TCI field in DCI can also be used to notify the terminal device which TCI state corresponding to the TCI state ID needs to be used.

[0147] In one possible implementation, when TCI state is used for CSI-RS reception, in addition to configuring multiple TCIstates in RRC, the qcl-info parameter of each CSI-RS resource can also be specifically configured in RRC to notify the terminal device which TCI state corresponding to which TCI state ID needs to be used to receive which CSI-RS resource.

[0148] The following is a relevant introduction to the co-transmitted beam pair of the terminal device indicated by the TCI state identifier in the embodiment of the present application:

[0149] The network device can configure the beam by configuring the TCI state. The TCI state is generally configured through RRC signaling. The network device can configure one or more TCI states, and when it needs to instruct the terminal device to switch the beam, it can notify the terminal device of the identifier (TCI state ID) of different TCI states.

[0150] In a possible implementation, a typical TCI state for PUSCH includes the following: Fig.14 As shown, the most relevant part is the reference signal (referenceSignal), which includes two reference signal representations, one of which is the uplink reference signal resource identifier SRS-ResourceId, for example, used to indicate SRS resource#1, and the other is the downlink reference signal resource identifier NZP-CSI-RS-ResourceId, for example, used to indicate CSI-RS resource#1.

[0151] In addition, QCL type F is a newly defined QCL type for the method of this embodiment, which is used to indicate a co-transmitted beam pair. Among them, the transmit beam and the receive beam are consistent with respect to the spatial domain parameters. That is to say, it indicates that the terminal device can use the transmit beam corresponding to the receive beam of the downlink signal such as SSB or CSI-RS for uplink transmission. The downlink reception here includes but is not limited to the reception of PDSCH, PDCCH, PDSCH-DMRS, PDCCH-DMRS, and CSI-RS. Since the terminal device in this embodiment uses two antenna panels to receive CSI-RS and send SRS respectively, the reference signal of QCL type F may also include a CSI-RS resource identifier and an SRS resource identifier. Based on this implementation, the content included in the TCI state is redefined so that the TCI state identifier can indicate a co-transmitted beam pair.

[0152] In a possible implementation, the TCI state may also include information such as a TCI state ID, a cell ID and a BWP ID of a reference signal.

[0153] In a possible implementation, when TCI state is used for PUCCH transmission, in addition to configuring multiple TCIstates in RRC, the terminal may also be notified through MAC CE signaling of which TCIstate corresponding to the TCI state ID to use.

[0154] In a possible implementation, when TCI state is used for PUSCH transmission, in addition to configuring multiple TCIstates in RRC, the TCI field in DCI can also be used to notify the terminal which TCIstate corresponding to the TCI state ID needs to be used. Optionally, the SRI field in DCI can be reused to notify the terminal which TCI state corresponding to the TCI state ID needs to be used.

[0155] In one possible implementation, when TCI state is used for SRS transmission, in addition to configuring multiple TCIstates in RRC, the transmission beam parameters of each SRS resource can also be specifically configured in RRC. For example, the spatial relation parameter is used to notify the terminal which TCI state corresponding to which TCI state ID needs to be used to send which SRS resource.

[0156] In one possible implementation, the identifier of the TCI state used to indicate the same transmit beam pair and the identifier of the TCI state used to indicate the same receive beam pair can be the identifier of the same TCI state. In this case, the QCL type in the TCI state is used to indicate that the transmit beam and the receive beam are consistent with respect to the spatial domain parameters.

[0157] In a possible implementation, operations 601 to 606 may be performed, and the above operation 607 may not be performed. In a possible implementation, the above operation 604 may not be performed, and in the above operation 607, the second indication information sent by the network device is used to indicate the second transmit beam. The terminal device can determine the co-transmit beam pair and / or co-receive beam pair of the terminal device based on the receive beam of the first downlink reference signal resource and the second transmit beam.

[0158] It can be seen that through the implementation Figure 6 The described method can train and obtain a co-receiving beam pair or a co-transmitting beam pair composed of beams generated by different antenna panels of a terminal device.

[0159] In one possible implementation, the transmit beam used to send the first uplink reference signal is determined based on the receive beam of the first downlink reference signal resource. That is, the transmit beam used for uplink beam training is determined based on the optimal receive beam obtained through training. The transmit beam used to send the first uplink reference signal can be the transmit beam with the highest correlation with the receive beam of the first downlink reference signal resource, so that the co-transmit beam pair and / or co-receive beam pair obtained through training can be used to transmit the same data, which is beneficial to increase the transmission capacity. Alternatively, the transmit beam used to send the first uplink reference signal can be the transmit beam with the lowest correlation with the receive beam of the first downlink reference signal resource, so that the co-transmit beam pair and / or co-receive beam pair obtained through training can be beneficial to increase the reliability of data transmission when transmitting different data.

[0160] For example, in Figure 7 , the transmission beam b3 used to send SRS#1 and the transmission beam b4 used to send SRS#2 are determined based on the receiving beam b1. The transmission beam b3 and the transmission beam b4 can be the transmission beams with the highest correlation with the receiving beam b1 in the second antenna panel. For example, the transmission beam b3 and the transmission beam b4 can be the two transmission beams that are spatially adjacent to the receiving beam b1 in the second antenna panel. Alternatively, the transmission beam b3 and the transmission beam b4 can be the transmission beams with the lowest correlation with the receiving beam b1 in the second antenna panel. For example, the transmission beam b3 and the transmission beam b4 can be the two transmission beams that are spatially farthest apart from the receiving beam b1 in the second antenna panel.

[0161] In a possible implementation, a downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set corresponding to the channel measurement resource set, a first downlink reference signal resource is a first channel measurement resource, the first channel measurement resource corresponds to a first interference measurement resource, and a transmit beam used to send a first uplink reference signal is determined based on a transmit beam used by a network device to send the first interference measurement resource. By implementing this implementation, it is helpful to reduce interference between trained co-receive beam pairs and / or co-transmit beam pairs.

[0162] For example, in this possible implementation, the downlink reference signal resource set includes Figure 4The channel measurement resource set (i.e., CSI-RS resource set #1) and the interference measurement resource set (i.e., CSI-RS resource set #2) are shown. If the first downlink reference signal resource is CSI-RS resource #1, the first interference measurement resource is CSI-RS resource #12. The transmit beam b3 used to send SRS #1 and the transmit beam b4 used to send SRS #2 are determined based on the transmit beam used by the network device to send CSI-RSresource #12. For example, the receiving beam X of the terminal device corresponding to the transmitting beam used by the network device to send CSI-RSresource #12 can be determined first. Then, the two beams with the highest correlation with the receiving beam X in the second antenna panel are used as the transmitting beams of SRS #1 and SRS #2, respectively.

[0163] In a possible implementation, the terminal device activates one of the first antenna panel and the second antenna panel at the same time. That is, the first antenna panel and the second antenna panel are not activated at the same time, which is conducive to reducing the complexity and power consumption of the terminal device. Alternatively, the terminal device can also activate the first antenna panel and the second antenna panel at the same time, which can train the terminal device's co-transmitting beam pair and / or co-receiving beam pair more quickly.

[0164] In a possible implementation, the time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device. By implementing this implementation method, it can be ensured that the first antenna panel and the second antenna panel are not activated at the same time, which is conducive to reducing the complexity and power consumption of the terminal device.

[0165] In a possible implementation, the configuration information is also used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal. Optionally, the configuration information may indicate the antenna panel used to measure the downlink reference signal, and the antenna panel used to send the first uplink reference signal may be pre-specified by the protocol. Alternatively, the configuration information may indicate the antenna panel used to send the first uplink reference signal, and the antenna panel used to measure the downlink reference signal may be pre-specified by the protocol. Alternatively, the configuration information is used to indicate the antenna panel used to measure the downlink reference signal and the antenna panel used to send the first uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training.

[0166] Optionally, the terminal device may feed back the identification (such as the number) of the antenna panel of the terminal device to the network device in advance, so that the network device may configure the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal.

[0167] Optionally, the network device may indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal through configuration information. Alternatively, the network device may also indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal through other signaling, that is, the signaling used by the network device to configure the reference signal resource set may be different from the signaling used by the network device to indicate the antenna panel.

[0168] In a possible implementation, the configuration information is also used to indicate the use of different antenna panels to measure the downlink reference signal and to send the first uplink reference signal. In this possible implementation, the network device does not need to specify to the terminal device which antenna panel to use to measure the downlink reference signal and to send the first uplink reference signal. The network device only needs to instruct the terminal device to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training. Optionally, the network device may not indicate the use of different antenna panels to measure the downlink reference signal and to send the first uplink reference signal through the above configuration information. The network device may indicate the use of different antenna panels to measure the downlink reference signal and to send the first uplink reference signal through other signaling.

[0169] In one possible implementation, the terminal device may report capability information indicating whether the terminal device supports Figure 6 The method described in the corresponding embodiment.

[0170] In a possible implementation, the protocol predefines or the network device can instruct the terminal device to execute Figure 6 The method described in the corresponding embodiment.

[0171] In a possible implementation, the above-mentioned operations 604 and 607 may not be performed, and the network device sends a third indication information to the terminal device, and the third indication information is used to indicate the optimal transmission beam of the second antenna panel of the terminal device obtained by uplink beam training or to indicate the receiving beam corresponding to the optimal transmission beam. After receiving the third indication information, the terminal device determines the same transmission beam pair and / or the same reception beam pair based on the third indication information and the first downlink reference signal resource (i.e., corresponding to the optimal receiving beam of the first antenna panel). For example, after the terminal device performs downlink beam training through antenna panel 1, it determines that the receiving beam b1 corresponding to CSI-RS resource#1 is the optimal receiving beam of antenna panel 1. After the terminal device performs uplink beam training through antenna panel 2, the network device confirms that the transmission beam b3 corresponding to SRS resource#1 is the optimal transmission beam of antenna panel 2. The network device sends a third indication information to the terminal device, and the third indication information is used to indicate the transmission beam b3 or to indicate the receiving beam corresponding to the transmission beam b3. After receiving the third indication information, the terminal device determines that the receiving beam b1 and the receiving beam b3 corresponding to the receiving beam are the same receiving beam pair, and / or determines that the transmitting beam b3 and the transmitting beam b1 corresponding to the receiving beam are the same transmitting beam pair. Based on this possible implementation, the network device only needs to indicate one beam to the terminal device, and the terminal device can accurately determine the same transmitting beam pair and / or the same receiving beam pair.

[0172] In order to enable the terminal device to receive / transmit simultaneously through multiple panels, the beam training process needs to be able to determine the multiple beams that the terminal device can use simultaneously, which are generated by different terminal antenna panels. Uplink and downlink joint beam training can be achieved by configuring an SRS resource set with an associated CSI report. Assuming that the terminal device has beam consistency across antenna panels (that is, the receiving beam of terminal antenna panel 1 can be used to indicate the transmitting beam of terminal antenna panel 2, and vice versa), the terminal device can use one of the antenna panels to measure and report the downlink beam, and use another antenna panel to send uplink SRS resources, and its transmit beam can refer to the reported downlink beam. By selecting the best uplink beam pairing the reported DL beam, the gNB could determine simultaneous multi-beam for the UE.

[0173] Proposal: In order to realize the terminal multi-panel simultaneous transmission / reception function, support joint DL / UL beam training (ProposalX: support joint DL / UL beam training for simultaneous multi-panel transmission and reception).

[0174] See also Figure 8 , Figure 8 FIG. 1 is a flow chart of another beam pair training method provided in an embodiment of the present application. Figure 8 As shown, the beam pair training method includes the following operations 801 to 808. Among them:

[0175] 801. A network device sends configuration information to a terminal device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set and a second uplink reference signal resource set associated with the downlink reference signal resource set.

[0176] For the description of the downlink reference signal resource set and the first uplink reference signal resource set, please refer to the above Figure 2 The description in the corresponding embodiment is not repeated here. The second uplink reference signal resource set is similar to the first uplink reference signal resource set, and is not repeated here.

[0177] exist Figure 8 In the described embodiment, the configuration information may include the following two forms:

[0178] Form 1: The configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set and a second uplink reference signal resource set associated with the downlink reference signal resource set. The downlink reference signal resource set includes a channel measurement resource set used for channel measurement.

[0179] For example, the downlink reference signal resource set is a CSI-RS resource set, and the first uplink reference signal resource set and the second uplink reference signal resource set are SRS resource sets. Fig. 9As shown, the network device sends a configuration information through RRC signaling, and the configuration information includes a reporting setting (ReportConfig#1). The reporting amount is CRI-RSRP (i.e., beam indication-beam quality, which can also be called channel state information reference signal resource indication-reference signal received power). And the reporting setting (ReportConfig#1) corresponds to the channel measurement resource setting (ResourceConfig#1), and its function is marked as channel measurement (resources for channel measurement). For a description of the channel measurement resource setting (ResourceConfig#1), please refer to the above Figure 3 The description of the corresponding examples is not repeated here.

[0180] The reporting setting (ReportConfig#1) is associated with SRS resource set #1 (SRS resource set#1) and SRS resource set #2 (SRS resource set#2), and the CSI-RS resource set included in the channel measurement resource setting is associated with SRS resource set #1 and SRS resource set #2. Among them, SRS resource set #1 (SRS resource set#1) is the first uplink reference signal resource set, and SRS resource set #2 (SRS resource set#2) is the second uplink reference signal resource set. The SRS resource set #1 includes Z (>=1) SRS resources, for example, SRS resource set #1 includes SRS resource #1 (SRSresource#1) and SRS resource #2 (SRS resource#2). The SRS resource set #2 includes Z (>=1) SRS resources, for example, SRS resource set #2 includes SRS resource #11 (SRS resource#11) and SRS resource #12 (SRSresource#12).

[0181] Form 2: The configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set and a second uplink reference signal resource set associated with the downlink reference signal resource set. The downlink reference signal resource set includes a channel measurement resource set for channel measurement and an interference measurement resource set for interference measurement.

[0182] For example, the downlink reference signal resource set is a CSI-RS resource set, and the first uplink reference signal resource set and the second uplink reference signal resource set are SRS resource sets. Fig.10As shown, the network device configures a reporting setting (ReportConfig#1) whose reporting quantity is CRI-SINR (channel state information reference signal resource indication - signal to interference and noise ratio). The reporting setting (ReportConfig#1) corresponds to two resource settings (ResourceConfig), namely the channel measurement resource setting (ResourceConfig#1) and the interference measurement resource setting (ResourceConfig#2). The channel measurement resource setting, whose function is marked as channel measurement (resources for channel measurement). The interference measurement resource setting, whose function is marked as interference measurement (resources for interference measurement). For a description of the channel measurement resource setting (ResourceConfig#1) and the interference measurement resource setting (ResourceConfig#2), see Figure 4 The description of the corresponding examples is not repeated here.

[0183] The reporting setting (ReportConfig#1) is associated with SRS resource set #1 (SRS resource set#1) and SRS resource set #2 (SRS resource set#2), that is, the CSI-RS resource set in the channel measurement resource setting is associated with SRS resource set #1 and SRS resource set #2. Among them, SRS resource set #1 (SRS resource set#1) is the first uplink reference signal resource set, and SRS resource set #2 (SRS resource set#2) is the second uplink reference signal resource set. The SRS resource set #1 includes Z (>=1) SRS resources, for example, SRS resource set #1 includes SRS resource #1 (SRSresource#1) and SRS resource #2 (SRS resource#2). The SRS resource set #2 includes Z (>=1) SRS resources, for example, SRS resource set #2 includes SRS resource #11 (SRS resource#11) and SRS resource #12 (SRSresource#12).

[0184] 802. The network device sends a downlink reference signal to the terminal device based on a downlink reference signal resource set.

[0185] 803. The terminal device measures the downlink reference signal sent by the network device based on the downlink reference signal resource set through the first antenna panel of the terminal device.

[0186] In the embodiment of the present application, after receiving the configuration information sent by the network device, the terminal device measures the downlink reference signal sent by the network device based on the downlink reference signal resource set through the first antenna panel of the terminal device. The specific implementation of operation 802 and operation 803 can refer to the above operation 202 and operation 203, which will not be repeated here.

[0187] 804. The terminal device sends a second uplink reference signal to the network device through the first antenna panel based on the second uplink reference signal resource set. The transmit beam used for sending the second uplink reference signal is determined based on the receive beam of the first downlink reference signal resource. The first downlink reference signal resource is determined from the downlink reference signal resource set based on the measurement result of the downlink reference signal.

[0188] For a description of the first downlink reference signal resource, see the above Figure 6 The description in the corresponding embodiment is not repeated here.

[0189] In a possible implementation, the transmission beam used by the terminal device to send the second uplink reference signal through the first antenna panel may be the transmission beam with the highest correlation with the reception beam of the first downlink reference signal resource. In this way, beam training can be strengthened in the direction of the optimal reception beam.

[0190] 805. The network device measures the second uplink reference signal sent by the terminal device based on the second uplink reference signal resource set.

[0191] 806. The terminal device sends a first uplink reference signal to the network device based on a first uplink reference signal resource set through a second antenna panel of the terminal device, and the first antenna panel is different from the second antenna panel.

[0192] 807. The network device measures the first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set.

[0193] Operations 802 to 805 may be performed before, after, or simultaneously with operations 806 to 807 .

[0194] 808. The network device sends second indication information to the terminal device.

[0195] In an embodiment of the present application, after the network device measures the first uplink reference signal and the second uplink reference signal, the network device sends the second indication information to the terminal device based on the first indication information and the measurement result of the first uplink reference signal. The first indication information is used to indicate the same-receive beam pair and / or the same-transmit beam pair of the terminal device, the same-transmit beam pair includes the first transmit beam and the second transmit beam, the same-receive beam pair includes the first receive beam corresponding to the first transmit beam and the second receive beam corresponding to the second transmit beam, the first transmit beam is the transmit beam determined by the network device based on the measurement result of the first uplink reference signal, and the second transmit beam is the transmit beam determined by the network device based on the measurement result of the second uplink reference signal.

[0196] The receiving beam corresponding to the first transmitting beam refers to a receiving beam having a beam receiving direction that is the same as the beam transmitting direction of the first transmitting beam, or the receiving beam corresponding to the first transmitting beam refers to a receiving beam that is transmitted using the same spatial domain transmission filter as the first transmitting beam. The receiving beam corresponding to the second transmitting beam is similar and will not be described in detail here.

[0197] For example, the downlink reference signal resource set configured by the network device is Fig. 9 The CSI-RS resource set #1 shown in the figure, the first uplink reference signal resource set configured by the network device is Fig. 9 The SRS resource set #1 shown in the figure, the second uplink reference signal resource set configured by the network device is Fig. 9 SRS resource set #2 as shown. Fig.11 As shown, the network device sends CSI-RS#1 in CSI-RS resource#1 and sends CSI-RS#2 in CSI-RS resource#2. Correspondingly, the terminal device measures CSI-RS#1 in CSI-RS resource#1 through the receiving beam b1 of the antenna panel 1. The terminal device measures CSI-RS#2 in CSI-RS resource#2 through the receiving beam b2 of the antenna panel 1. Based on the measurement results of CSI-RS#1 and CSI-RS#2, the terminal device determines that the reception quality of CSI-RS#1 is the best. Therefore, the first downlink reference signal resource is CSI-RS resource#1. The terminal device determines the transmission beams of SRS resource#11 and SRS resource#12 based on the receiving beam b1 of CSI-RS resource#1. For example, as Fig.11As shown, the terminal device determines that the transmit beams of SRSresource#11 and SRS resource#12 are transmit beams b5 and b6 respectively based on the receive beam b1 of CSI-RS resource#1. The terminal device sends SRS#11 in SRS resource#11 through the transmit beam b5 of antenna panel 1. The terminal device sends SRS#12 in SRS resource#12 through the transmit beam b6 of antenna panel 2. Accordingly, the network device measures SRS#11 in SRS resource#11 and measures SRS#12 in SRS resource#12. Based on the measurement results of SRS#11 and SRS#12, the network device determines that SRS#11 has the best quality. Therefore, the network device determines that the optimal transmit beam in the first antenna panel of the terminal device is the transmit beam b5 of SRS resource#11.

[0198] The terminal device sends SRS#1 in SRS resource#1 through the transmit beam b3 of antenna panel 2. The terminal device sends SRS#2 in SRS resource#2 through the transmit beam b4 of antenna panel 2. Accordingly, the network device measures SRS#1 in SRSresource#1 and measures SRS#2 in SRS resource#2. Based on the measurement results of SRS#1 and SRS#2, the network device determines that SRS#1 has the best quality. Therefore, the network device determines that the optimal transmit beam in the second antenna panel of the terminal device is the transmit beam b3 corresponding to SRS resource#1.

[0199] When data transmission is required subsequently, the network device sends a second indication message to the terminal device based on the measurement results of the first uplink reference signal and the second uplink reference signal. The second indication message indicates the same-transmit beam pair and / or the same-receive beam pair of the terminal device. Among them, the same-transmit beam pair includes a transmit beam b5 and a transmit beam b3. The same-receive beam pair includes a receive beam corresponding to the transmit beam b5 and a receive beam corresponding to the transmit beam b3. Specifically, the network device can indicate the same-receive beam pair and / or the same-transmit beam pair of the terminal device through the TCIstate identifier. The specific implementation method of the network device indicating the same-receive beam pair and / or the same-transmit beam pair of the terminal device through the TCI state identifier can be found in the description above and will not be repeated here.

[0200] In a possible implementation, operations 801 to 807 may be performed, and operation 808 may not be performed.

[0201] The optimal receiving beam found by the terminal device through downlink beam training is not necessarily suitable as one of the transmitting beams in the uplink co-transmitting beam pair. For example, when the terminal does not have consistent transmit and receive beams, the optimal receiving beam found through downlink beam training is not necessarily suitable as one of the transmitting beams in the uplink co-transmitting beam pair. Figure 8 In the described method, uplink beam training is also performed for the optimal receiving beam transmission, which is conducive to training the optimal terminal-side co-transmitting beam pair and / or co-receiving beam pair.

[0202] In one possible implementation, the transmit beam used to send the first uplink reference signal is determined based on the receive beam of the first downlink reference signal resource. That is, the transmit beam used for uplink beam training is determined based on the optimal receive beam obtained through training. The transmit beam used to send the first uplink reference signal can be the transmit beam with the highest correlation with the receive beam of the first downlink reference signal resource, so that the co-transmit beam pair and / or co-receive beam pair obtained through training can be used to transmit the same data, which is beneficial to increase the transmission capacity. Alternatively, the transmit beam used to send the first uplink reference signal can be the transmit beam with the lowest correlation with the receive beam of the first downlink reference signal resource, so that the co-transmit beam pair and / or co-receive beam pair obtained through training can be beneficial to increase the reliability of data transmission when transmitting different data.

[0203] In a possible implementation, a downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set corresponding to the channel measurement resource set, a first downlink reference signal resource is a first channel measurement resource, the first channel measurement resource corresponds to a first interference measurement resource, and a transmit beam used to send a first uplink reference signal is determined based on a transmit beam used by a network device to send the first interference measurement resource. By implementing this implementation, it is helpful to reduce interference between trained co-receive beam pairs and / or co-transmit beam pairs.

[0204] In a possible implementation, the time of sending the first uplink reference signal is the same as the time of sending the second uplink reference signal. Based on this possible implementation, it is helpful for the network device to more accurately determine the co-transmitting beam pair and / or the co-receiving beam pair of the terminal device.

[0205] In a possible implementation, the configuration information is also used to indicate the antenna panel used for measuring the downlink reference signal and sending the second uplink reference signal, and / or to indicate the antenna panel used for sending the first uplink reference signal. Optionally, the configuration information may indicate the antenna panel used for measuring the downlink reference signal and the antenna panel used for sending the second uplink reference signal, and the antenna panel used for sending the first uplink reference signal may be pre-specified by the protocol. Alternatively, the configuration information may indicate the antenna panel used for sending the first uplink reference signal, and the antenna panel used for measuring the downlink reference signal and the antenna panel used for sending the second uplink reference signal may be pre-specified by the protocol. Alternatively, the configuration information is used to indicate the antenna panel used for measuring the downlink reference signal, the antenna panel used for sending the second uplink reference signal, and the antenna panel used for sending the first uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training.

[0206] Optionally, the terminal device may feed back the identification (such as the number) of the antenna panel of the terminal device to the network device in advance, so that the network device may configure the antenna panel used to measure the downlink reference signal and the antenna panel used to send the second uplink reference signal, and / or the antenna panel used to send the first uplink reference signal.

[0207] Optionally, the network device may indicate the antenna panel used to measure the downlink reference signal and the antenna panel used to send the second uplink reference signal, and / or the antenna panel used to send the first uplink reference signal through configuration information. Alternatively, the network device may also indicate the antenna panel used to measure the downlink reference signal and the antenna panel used to send the second uplink reference signal, and / or the antenna panel used to send the first uplink reference signal through other signaling, that is, the signaling used by the network device to configure the reference signal resource set may be different from the signaling used by the network device to indicate the antenna panel.

[0208] In a possible implementation, the configuration information is also used to indicate the use of the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to indicate the terminal device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal. By implementing this possible implementation, the terminal device can use different antenna panels for uplink beam training and downlink beam training. Optionally, the network device may not instruct the terminal device to use the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to instruct the terminal device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal through the above configuration information. The network device may instruct the terminal device to use the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to instruct the terminal device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal through other signaling.

[0209] In one possible implementation, the terminal device may report capability information indicating whether the terminal device supports Figure 8 The method described in the corresponding embodiment.

[0210] In a possible implementation, the protocol predefines or the network device can instruct the terminal device to execute Figure 8 The method described in the corresponding embodiment.

[0211] See also Fig.15 , Fig.15 A schematic structural diagram of a communication device according to an embodiment of the present application is shown. Fig.15 The communication device shown can be used to perform the above Figure 2 , Figure 6 or Figure 8 The method described in the embodiment of the invention can be part or all of the functions of the terminal device. The device can be a terminal device, or a device in the terminal device, or a device that can be used in conjunction with the terminal device. The communication device can also be a chip system. Fig.15 The communication device shown may include a communication unit 1501 and a processing unit 1502. The processing unit 1502 is used to perform data processing. The communication unit 1501 integrates a receiving unit and a sending unit. Alternatively, the communication unit 1501 may be split into a receiving unit and a sending unit. The communication unit 1501 may also be referred to as a transceiver unit. The communication unit 1501 below is similar and will not be described in detail below.

[0212] The communication unit 1501 is used to receive configuration information sent by a network device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; the communication unit 1501 is also used to measure a downlink reference signal sent by the network device based on the downlink reference signal resource set via a first antenna panel of the communication device; the communication unit 1501 is also used to send a first uplink reference signal to the network device based on the first uplink reference signal resource set via a second antenna panel of the communication device, where the first antenna panel is different from the second antenna panel.

[0213] In one possible implementation, the communication unit 1501 is also used to feed back first indication information to the network device based on the measurement result of the downlink reference signal, and the first indication information includes information used to indicate the first downlink reference signal resource in the downlink reference signal resource set; the communication unit 1501 is also used to receive second indication information sent by the network device after sending the first uplink reference signal to the network device based on the first uplink reference signal resource set through the second antenna panel of the communication device, and the second indication information is used to indicate the same-receive beam pair and / or the same-transmit beam pair of the communication device, the same-receive beam pair includes a first receive beam and a second receive beam, the same-transmit beam pair includes a first transmit beam and a second transmit beam, the first receive beam is a receive beam of the first downlink reference signal resource, the second transmit beam is a transmit beam determined by the network device based on the measurement result of the first uplink reference signal, the second receive beam is a receive beam corresponding to the second transmit beam, and the first transmit beam is a transmit beam corresponding to the first receive beam.

[0214] In a possible implementation, a transmit beam used to send the first uplink reference signal is determined based on a receive beam of the first downlink reference signal resource.

[0215] In one possible implementation, a downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set corresponding to the channel measurement resource set, a first downlink reference signal resource is a first channel measurement resource, the first channel measurement resource corresponds to a first interference measurement resource, and a transmit beam used to send a first uplink reference signal is determined based on a transmit beam used by a network device to send the first interference measurement resource.

[0216] In a possible implementation, the communication device activates one of the first antenna panel and the second antenna panel at the same time.

[0217] In one possible implementation, the time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the communication device.

[0218] In a possible implementation, the configuration information is further used to indicate an antenna panel used for measuring a downlink reference signal and / or an antenna panel used for sending a first uplink reference signal.

[0219] In a possible implementation, the configuration information is further used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

[0220] In a possible implementation, the configuration information is further used to configure a second uplink reference signal resource set associated with the downlink reference signal resource set.

[0221] The communication unit 1501 is also used to send a second uplink reference signal to the network device through the first antenna panel based on the second uplink reference signal resource set. The transmit beam used for sending the second uplink reference signal is determined based on the receive beam of the first downlink reference signal resource. The first downlink reference signal resource is determined from the downlink reference signal resource set based on the measurement result of the downlink reference signal.

[0222] In one possible implementation, the communication unit 1501 is also used to receive second indication information sent by the network device, where the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the communication device, where the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, and the co-receiving beam pair includes a first receiving beam corresponding to the first transmitting beam and a second receiving beam corresponding to the second transmitting beam, where the first transmitting beam is a transmitting beam determined by the network device based on a measurement result of a first uplink reference signal, and the second transmitting beam is a transmitting beam determined by the network device based on a measurement result of a second uplink reference signal.

[0223] In a possible implementation, the time for sending the first uplink reference signal is the same as the time for sending the second uplink reference signal.

[0224] In a possible implementation, the configuration information is further used to indicate an antenna panel used for measuring a downlink reference signal and sending a second uplink reference signal, and / or to indicate an antenna panel used for sending a first uplink reference signal.

[0225] In a possible implementation, the configuration information is also used to instruct the use of the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to instruct the communication device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal.

[0226] See also Fig.15 , Fig.15 A schematic structural diagram of a communication device according to an embodiment of the present application is shown. Fig.15 The communication device shown can be used to perform the above Figure 6 The method described in the embodiment of the invention can be part or all of the functions of the network device. The device can be a network device, or a device in a network device, or a device that can be used in conjunction with a network device. The communication device can also be a chip system. Fig.15 The communication device shown may include a communication unit 1501 and a processing unit 1502. The processing unit 1502 is used to perform data processing.

[0227] The communication unit 1501 is used to send configuration information to the terminal device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; the communication unit 1501 is also used to send a downlink reference signal to the terminal device based on the downlink reference signal resource set; the communication unit 1501 is also used to receive first indication information fed back by the terminal device, where the first indication information includes information for indicating a first downlink reference signal resource in the downlink reference signal resource set; the communication unit 1501 is also used to measure the terminal device based on the first uplink reference signal resource set The device sends a first uplink reference signal; the communication unit 1501 is also used to send second indication information to the terminal device, and the second indication information is used to indicate a same-receive beam pair and / or a same-transmit beam pair of the terminal device, the same-receive beam pair includes a first receive beam and a second receive beam, the same-transmit beam pair includes a first transmit beam and a second transmit beam, the first receive beam is a receive beam of a first downlink reference signal resource, the second transmit beam is a transmit beam determined based on a measurement result of the first uplink reference signal, the second receive beam is a receive beam corresponding to the second transmit beam, and the first transmit beam is a transmit beam corresponding to the first receive beam.

[0228] In one possible implementation, the time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device.

[0229] In a possible implementation, the configuration information is further used to indicate an antenna panel used for measuring a downlink reference signal and / or an antenna panel used for sending a first uplink reference signal.

[0230] In a possible implementation, the configuration information is further used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

[0231] See also Fig.15 , Fig.15 A schematic structural diagram of a communication device according to an embodiment of the present application is shown. Fig.15 The communication device shown can be used to perform the above Figure 8 The method described in the embodiment of the invention can be part or all of the functions of the network device. The device can be a network device, or a device in a network device, or a device that can be used in conjunction with a network device. The communication device can also be a chip system. Fig.15 The communication device shown may include a communication unit 1501 and a processing unit 1502. The processing unit 1502 is used to perform data processing.

[0232] The communication unit 1501 is used to send configuration information to the terminal device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set and a second uplink reference signal resource set associated with the downlink reference signal resource set; the communication unit 1501 is also used to send a downlink reference signal to the terminal device based on the downlink reference signal resource set; the communication unit 1501 is also used to measure a first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set; the communication unit 1501 is also used to measure a second uplink reference signal sent by the terminal device based on the second uplink reference signal resource set; the communication unit 1501 is also used to send second indication information to the terminal device, where the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the terminal device, where the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, where the co-receiving beam pair includes a first receiving beam corresponding to the first transmitting beam and a second receiving beam corresponding to the second transmitting beam, where the first transmitting beam is a transmitting beam determined based on a measurement result of the first uplink reference signal, and the second transmitting beam is a transmitting beam determined based on a measurement result of the second uplink reference signal.

[0233] In a possible implementation, the configuration information is further used to indicate an antenna panel used for measuring a downlink reference signal and sending a second uplink reference signal, and / or to indicate an antenna panel used for sending a first uplink reference signal.

[0234] In a possible implementation, the configuration information is also used to indicate the use of the same antenna panel to measure the downlink reference signal and send the second uplink reference signal, and to indicate the terminal device to use different antenna panels to send the first uplink reference signal and the second uplink reference signal.

[0235] like Fig.16a The figure shows a communication device 160 provided in an embodiment of the present application, which is used to implement the above Figure 2 , Figure 6 or Figure 8 The device may be a terminal device or a device for a terminal device. The device for a terminal device may be a chip system or a chip in a terminal device. The chip system may be composed of a chip or may include a chip and other discrete devices. Alternatively, the communication device 160 is used to implement the above Figure 2 , Figure 6 or Figure 8 The device can be a network device or a device for a network device. The device for a network device can be a chip system or a chip in a network device. The chip system can be composed of a chip or can include a chip and other discrete devices.

[0236] The communication device 160 includes at least one processor 1620, which is used to implement the data processing function of the terminal device or network device in the method provided in the embodiment of the present application. The device 160 may also include a communication interface 1610, which is used to implement the transceiver operation of the terminal device or network device in the method provided in the embodiment of the present application. In the embodiment of the present application, the communication interface can be a transceiver, circuit, bus, module or other type of communication interface, which is used to communicate with other devices through a transmission medium. For example, the communication interface 1610 is used for the device in the device 160 to communicate with other devices. The processor 1620 uses the communication interface 1610 to send and receive data, and is used to implement the above method embodiment Figure 2 , Figure 6 or Figure 8 The method described.

[0237] For example, when the communication device 160 is a terminal device or a device for a terminal device, the communication interface 1610 may receive configuration information and perform operations 203 and 204. Alternatively, the communication interface 1610 may receive configuration information and perform operations 603 to 605 and receive the second indication information. Alternatively, the communication interface 1610 may receive configuration information and perform operations 803, 805, and 806 and receive the second indication information.

[0238] For another example, when the communication device 160 is a network device or a device for a network device, the communication interface 1610 may perform operations 201, 202, and 205. Alternatively, the communication interface 1610 may perform operations 601, 602, 606, and 607. Alternatively, the communication interface 1610 may perform operations 801, 802, 805, 807, and 808.

[0239] The device 160 may also include at least one memory 1630 for storing program instructions and / or data. The memory 1630 is coupled to the processor 1620. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, for information exchange between devices, units or modules. The processor 1620 may operate in conjunction with the memory 1630. The processor 1620 may execute program instructions stored in the memory 1630. At least one of the at least one memory may be included in the processor.

[0240] The specific connection medium between the communication interface 1610, the processor 1620 and the memory 1630 is not limited in the embodiment of the present application. Fig.16a The memory 1630, the communication interface 1620 and the communication interface 1610 are connected via a bus 1640. Fig.16a The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.16a Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0241] When the device 160 is specifically a device for a terminal device or a network device, for example, when the device 160 is specifically a chip or a chip system, the communication interface 1610 may output or receive a baseband signal. When the device 160 is specifically a terminal device or a network device, the communication interface 1610 may output or receive a radio frequency signal. In an embodiment of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the various methods, operations, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. The operation of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0242] As an example, Fig.16bThis is a schematic diagram of the structure of another terminal device 1600 provided in an embodiment of the present application. The terminal device can execute the operations executed by the terminal device in the above method embodiment.

[0243] For ease of explanation, Fig.16b Only the main components of the terminal device are shown. Fig.16b As shown, the terminal device 1600 includes a processor, a memory, a radio frequency circuit, an antenna, and an input / output device. The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device, execute software programs, and process the data of the software programs, such as to support the terminal device to execute Figure 2 , Figure 6 , Figure 8 The process described. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for converting baseband signals into radio frequency signals and processing radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The terminal device 1600 may also include input and output devices, such as a touch screen, a display screen, a keyboard, etc., which are mainly used to receive data input by a user and output data to the user. It should be noted that some types of terminal devices may not have input and output devices.

[0244] When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0245] Those skilled in the art will appreciate that for ease of description, Fig.16b Only one memory and processor are shown. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.

[0246] As an optional implementation, the processor may include a baseband processor and a central processing unit (CPU), wherein the baseband processor is mainly used to process the communication protocol and communication data, and the CPU is mainly used to control the entire terminal device, execute the software program, and process the data of the software program. Optionally, the processor may also be a network processor (NP) or a combination of a CPU and an NP. The processor may further include a hardware chip. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof. The memory may include volatile memory, such as random-access memory (RAM); the memory may also include non-volatile memory, such as flash memory, hard disk drive (HDD) or solid-state drive (SSD); the memory may also include a combination of the above types of memory.

[0247] For example, in the embodiments of the present application, Fig.16b As shown, the antenna and the radio frequency circuit with transceiver functions can be regarded as the communication unit 1601 of the terminal device 1600, and the processor with processing function can be regarded as the processing unit 1602 of the terminal device 1600.

[0248] The communication unit 1601 may also be referred to as a transceiver, a transceiver, a transceiver device, a transceiver unit, etc., and is used to implement the transceiver function. Optionally, the device used to implement the receiving function in the communication unit 1601 may be regarded as a receiving unit, and the device used to implement the sending function in the communication unit 1601 may be regarded as a sending unit, that is, the communication unit 1601 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0249] In some embodiments, the communication unit 1601 and the processing unit 1602 may be integrated into one device or separated into different devices. In addition, the processor and the memory may also be integrated into one device or separated into different devices.

[0250] The communication unit 1601 may be used to perform the sending and receiving operations of the terminal device in the above method embodiment. The processing unit 1602 may be used to perform the data processing operations of the terminal device in the above method embodiment.

[0251] An embodiment of the present application also provides a computer-readable storage medium, in which instructions are stored. When the computer-readable storage medium is executed on a processor, the method flow of the above method embodiment is implemented.

[0252] The embodiment of the present application also provides a computer program product. When the computer program product runs on a processor, the method flow of the above method embodiment is implemented.

[0253] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain operations can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0254] The descriptions of the various embodiments provided in this application can refer to each other, and the descriptions of the various embodiments have different focuses. For parts that are not described in detail in a certain embodiment, refer to the relevant descriptions of other embodiments. For the convenience and simplicity of description, for example, the functions of the various devices and equipment provided in the embodiments of this application and the operations performed can refer to the relevant descriptions of the method embodiments of this application, and the various method embodiments and the various device embodiments can also refer to, combine or quote each other.

[0255] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A beam pair training method, characterized in that: The method comprises: receiving configuration information sent by a network device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; Measuring, by a first antenna panel of a terminal device, a downlink reference signal sent by the network device based on the downlink reference signal resource set; Feedback first indication information to the network device based on the measurement result of the downlink reference signal, where the first indication information includes information used to indicate a first downlink reference signal resource in the downlink reference signal resource set; Sending a first uplink reference signal to the network device based on the first uplink reference signal resource set through a second antenna panel of the terminal device, wherein the first antenna panel is different from the second antenna panel; Receive second indication information sent by the network device, where the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the terminal device, where the co-receiving beam pair includes a first receiving beam and a second receiving beam, and the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, where the first receiving beam is a receiving beam of the first downlink reference signal resource, and the second transmitting beam is a transmitting beam determined by the network device based on a measurement result of the first uplink reference signal, where the second receiving beam is a receiving beam corresponding to the second transmitting beam, and the first transmitting beam is a transmitting beam corresponding to the first receiving beam.

2. The method according to claim 1, characterized in that A transmit beam used to send the first uplink reference signal is determined based on a receive beam of the first downlink reference signal resource.

3. The method according to claim 1, characterized in that The downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set corresponding to the channel measurement resource set, the first downlink reference signal resource is a first channel measurement resource, the first channel measurement resource corresponds to a first interference measurement resource, and the transmission beam used to send the first uplink reference signal is determined based on the transmission beam used by the network device to send the first interference measurement resource.

4. The method according to any one of claims 1 to 3, characterized in that: The terminal device activates one of the first antenna panel and the second antenna panel at the same time.

5. The method according to any one of claims 1 to 3, characterized in that: The time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device.

6. The method according to any one of claims 1 to 3, characterized in that: The configuration information is further used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal.

7. The method according to any one of claims 1 to 3, characterized in that: The configuration information is also used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

8. A beam pair training method, characterized in that: The method comprises: Sending configuration information to a terminal device, where the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; Sending a downlink reference signal to the terminal device based on the downlink reference signal resource set; receiving first indication information fed back by the terminal device, where the first indication information includes information used to indicate a first downlink reference signal resource in the downlink reference signal resource set; Measuring a first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set; Send second indication information to the terminal device, the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the terminal device, the co-receiving beam pair includes a first receiving beam and a second receiving beam, the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, the first receiving beam is a receiving beam of the first downlink reference signal resource, the second transmitting beam is a transmitting beam determined based on the measurement result of the first uplink reference signal, the second receiving beam is a receiving beam corresponding to the second transmitting beam, and the first transmitting beam is a transmitting beam corresponding to the first receiving beam.

9. The method according to claim 8, characterized in that The time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device.

10. The method according to claim 8 or 9, characterized in that: The configuration information is also used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal.

11. The method according to claim 8 or 9, characterized in that: The configuration information is also used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

12. A communication device, characterized in that: The communication device comprises: A communication unit, configured to receive configuration information sent by a network device, wherein the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; The communication unit is further configured to measure, through the first antenna panel of the communication device, a downlink reference signal sent by the network device based on the downlink reference signal resource set; The communication unit is further configured to feed back first indication information to the network device based on the measurement result of the downlink reference signal, wherein the first indication information includes information used to indicate a first downlink reference signal resource in the downlink reference signal resource set; The communication unit is further configured to send a first uplink reference signal to the network device based on the first uplink reference signal resource set through a second antenna panel of the communication device, wherein the first antenna panel is different from the second antenna panel; The communication unit is further used to receive second indication information sent by the network device after sending the first uplink reference signal to the network device based on the first uplink reference signal resource set through the second antenna panel of the communication device, the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the communication device, the co-receiving beam pair includes a first receiving beam and a second receiving beam, the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, the first receiving beam is a receiving beam of the first downlink reference signal resource, the second transmitting beam is a transmitting beam determined by the network device based on the measurement result of the first uplink reference signal, the second receiving beam is a receiving beam corresponding to the second transmitting beam, and the first transmitting beam is a transmitting beam corresponding to the first receiving beam.

13. The communication device according to claim 12, characterized in that: A transmit beam used to send the first uplink reference signal is determined based on a receive beam of the first downlink reference signal resource.

14. The communication device according to claim 12, characterized in that: The downlink reference signal resource set includes a channel measurement resource set and an interference measurement resource set corresponding to the channel measurement resource set, the first downlink reference signal resource is a first channel measurement resource, the first channel measurement resource corresponds to a first interference measurement resource, and the transmission beam used to send the first uplink reference signal is determined based on the transmission beam used by the network device to send the first interference measurement resource.

15. The communication device according to any one of claims 12 to 14, characterized in that: The communication device activates one of the first antenna panel and the second antenna panel at the same time.

16. The communication device according to any one of claims 12 to 14, characterized in that: The time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the communication device.

17. The communication device according to any one of claims 12 to 14, characterized in that: The configuration information is further used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal.

18. The communication device according to any one of claims 12 to 14, characterized in that: The configuration information is also used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

19. A communication device, characterized in that: The communication device comprises: A communication unit, configured to send configuration information to a terminal device, wherein the configuration information is used to configure a downlink reference signal resource set and a first uplink reference signal resource set associated with the downlink reference signal resource set; The communication unit is further configured to send a downlink reference signal to the terminal device based on the downlink reference signal resource set; The communication unit is further used to receive first indication information fed back by the terminal device, where the first indication information includes information used to indicate a first downlink reference signal resource in the downlink reference signal resource set; The communication unit is further configured to measure a first uplink reference signal sent by the terminal device based on the first uplink reference signal resource set; The communication unit is also used to send second indication information to the terminal device, where the second indication information is used to indicate a co-receiving beam pair and / or a co-transmitting beam pair of the terminal device, where the co-receiving beam pair includes a first receiving beam and a second receiving beam, and the co-transmitting beam pair includes a first transmitting beam and a second transmitting beam, where the first receiving beam is a receiving beam of the first downlink reference signal resource, and the second transmitting beam is a transmitting beam determined based on a measurement result of the first uplink reference signal, where the second receiving beam is a receiving beam corresponding to the second transmitting beam, and the first transmitting beam is a transmitting beam corresponding to the first receiving beam.

20. The communication device according to claim 19, characterized in that The time offset between the last downlink reference signal resource in the downlink reference signal resource set and the first uplink reference signal resource in the first uplink reference signal resource set is a preset value, or the time offset between the first downlink reference signal resource in the downlink reference signal resource set and the last uplink reference signal resource in the first uplink reference signal resource set is a preset value, and the preset value is greater than or equal to the activation time of the antenna panel of the terminal device.

21. The communication device according to claim 19 or 20, characterized in that: The configuration information is also used to indicate the antenna panel used to measure the downlink reference signal and / or the antenna panel used to send the first uplink reference signal.

22. The communication device according to claim 19 or 20, characterized in that: The configuration information is also used to instruct to use different antenna panels to measure the downlink reference signal and to send the first uplink reference signal.

23. A communication device, comprising a processor, wherein when the processor executes a computer program in a memory, the method according to any one of claims 1 to 7 or 8 to 11 is executed.

24. A communication device, characterized in that: including a processor and a memory; The memory is used to store computer-executable instructions; The processor is configured to execute the computer-executable instructions stored in the memory, so that the communication device executes the method according to any one of claims 1 to 7 or 8 to 11.

25. A communication device, characterized in that: Includes processor, memory and transceiver; The transceiver is used to receive a signal or send a signal; The memory is used to store program code; The processor is configured to call the program code from the memory to execute the method according to any one of claims 1 to 7 or 8 to 11.

26. A communication device, characterized in that: including a processor and an interface circuit; The interface circuit is used to receive code instructions and transmit them to the processor; the processor runs the code instructions to execute the method according to any one of claims 1 to 7 or 8 to 11.

27. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store instructions, and when the instructions are executed, the method according to any one of claims 1 to 7 or 8 to 11 is implemented.

28. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed, the method according to any one of claims 1 to 7 or 8 to 11 is implemented.

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