Communication method and device

Abstract

The embodiment of the invention provides a communication method and device, relates to the field of communication, and can perform beam switching in time. The method comprises the following steps: sending first indication information, and receiving second indication information; wherein the first indication information is used for requesting to measure a spatial parameter of a first channel or a first signal, the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or the first indication information is used for requesting to switch the spatial parameters of the first channel or the first signal, or the first indication information is used for requesting to recover the spatial parameters of the first channel or the first signal; the second indication information is used for indicating a first space parameter, and the first space parameter is used for transmitting a first channel or the first signal; or the second indication information is used for indicating the first reference signal resource set, and at least one reference signal resource included in the first reference signal resource set respectively corresponds to one spatial parameter.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular, to a communication method and device. Background Art

[0002] With the development of smart terminals, especially the emergence of video services, users' demand for capacity has exploded, so high-frequency bands with larger available bandwidth have become candidate bands for the next generation of communication systems. In addition, the signal transmission mechanism based on beamforming technology in high-frequency bands can overcome the large transmission loss caused by high-frequency bands.

[0003] Since terminals at different locations require different beams during signal transmission, the base station needs to switch beams for terminals at different locations. In the new radio (NR), the beam switching process is as follows: the base station measures all beams and determines the beam that matches the terminal at the current location based on the measurement results, and then switches to the beam.

[0004] However, current beam measurements are based on periodic triggering, so the base station cannot perform beam switching in a timely manner. Summary of the invention

[0005] The embodiments of the present application provide a communication method and device that can perform beam switching in a timely manner.

[0006] In the first aspect, a communication method is provided, which can be executed by a terminal device, or by a component of the terminal device, such as a processor, chip, or chip system of the terminal device, or by a logic module or software that can realize all or part of the functions of the terminal device. The method includes: sending a first indication message, wherein the first indication message is used to request measurement of a spatial parameter of a first channel or a first signal, the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, the first indication message is used to request switching of the spatial parameter of the first channel or the first signal, or, the first indication message is used to request recovery of the spatial parameter of the first channel or the first signal; receiving a second indication message, wherein the second indication message is used to indicate a first spatial parameter, and the first spatial parameter is used to transmit the first channel or the first signal; or, the second indication message is used to indicate a first reference signal resource set, and the first reference signal resource set includes at least one spatial parameter corresponding to each of the at least one reference signal resource.

[0007] Based on this solution, the terminal device triggers the measurement, switching, or recovery of the spatial parameters of the first channel or the first signal (i.e., the beam of the first channel / first signal) by sending a first indication message. Compared with the network device, the terminal device can promptly learn about the changes in its beam (for example, the beam of the first channel / first signal does not match due to the movement of the terminal device). Therefore, the terminal device can send the first indication message in the case of a beam change, instructing the network device to measure, switch, or restore the spatial parameters of the first channel or the first signal, so that the network device can promptly indicate a new beam to the terminal device (i.e., switch the beam) to ensure the transmission of the signal or channel, and ensure normal communication between the network device and the terminal device.

[0008] In one possible design, sending a first indication message includes: determining that a first condition is met, wherein the first condition includes one or more of the following: a first channel hybrid automatic repeat request HARQ feedback of the terminal device is negative NACK, and a signal quality of the first signal is less than or equal to a first threshold; sending the first indication message.

[0009] In one possible design, sending the first indication information includes: if there is an uplink scheduling request SR, sending the first indication information.

[0010] In one possible design, the communication method also includes: sending at least one of a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, or an uplink reference signal, and at least one of the PUSCH, PUCCH, or the uplink reference signal is related to the first spatial parameter.

[0011] In one possible design, the communication method also includes: receiving at least one of a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH, or a downlink reference signal, and at least one of the PDSCH, PDCCH, or the downlink reference signal is related to the first spatial parameter.

[0012] In the second aspect, a communication method is provided, which can be executed by a network device, or by a component of the network device, such as a processor, chip, or chip system of the network device, or by a logic module or software that can realize all or part of the functions of the network device. The method includes: receiving first indication information, wherein the first indication information is used to request measurement of a spatial parameter of a first channel or a first signal, the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, the first indication information is used to request switching of the spatial parameter of the first channel or the first signal, or, the first indication information is used to request recovery of the spatial parameter of the first channel or the first signal; according to the first indication information, sending second indication information, the second indication information is used to indicate a first reference signal resource set, and the first reference signal resource set includes at least one reference signal resource corresponding to a spatial parameter.

[0013] Based on this solution, the network device triggers the measurement, switching, or recovery of the spatial parameters of the first channel or the first signal (i.e., the beam of the first channel / first signal) according to the first indication information indicated by the terminal device. Compared with the network device, the terminal device can promptly learn about the changes in its beam (for example, the beam of the first channel / first signal does not match due to the movement of the terminal device). Therefore, the terminal device can send the first indication information in the case of a beam change, instructing the network device to measure, switch, or restore the spatial parameters of the first channel or the first signal, so that the network device can promptly indicate a new beam to the terminal device (i.e., switch the beam) to ensure the transmission of the signal or channel, and ensure normal communication between the network device and the terminal device.

[0014] In one possible design, the communication method also includes: receiving at least one of PUSCH, PUCCH or an uplink reference signal, and at least one of PUSCH, PUCCH or an uplink reference signal is related to the first spatial parameter.

[0015] In one possible design, the communication method also includes: sending at least one of PDSCH, PDCCH or a downlink reference signal, and at least one of PDSCH, PDCCH or a downlink reference signal is related to the first spatial parameter.

[0016] In combination with the first aspect and the second aspect, in a possible design, the first spatial parameter is used for transmission of the PDSCH corresponding to the NACK.

[0017] Based on this possible design, since the first channel HARQ feedback of the terminal device is NACK, the signal quality of the first signal is less than or equal to the first threshold, which means that the channel quality of the first channel or the signal quality of the first signal is poor, and a new beam (i.e., spatial parameters) needs to be switched. Therefore, at this time, the terminal device can send a first indication information to the network device to trigger the measurement, switching, or recovery of the spatial parameters of the first channel or the first signal (i.e., the beam of the first channel / first signal). That is, the network device can start beam measurement or beam switching, and compared with the solution in which the network device periodically performs beam measurement, it can switch the beam in time to ensure normal communication between the network device and the terminal device.

[0018] In combination with the first aspect and the second aspect, in a possible design, the first spatial parameter is used for transmission of a physical uplink shared channel PUSCH corresponding to the SR.

[0019] Based on this possible design, in the presence of SR, the terminal device sends a first indication message to the network device, which is used to trigger the measurement or switching of the spatial parameters of the first channel or the first signal (i.e., the beam of the first channel / first signal), so that the network device can promptly configure the preferred spatial parameters (i.e., the beam) for the terminal device, so that the terminal device can send PUSCH on the preferred spatial parameters, thereby ensuring normal communication between the network device and the terminal device.

[0020] In combination with the first aspect and the second aspect, in one possible design, the first indication information is located in the first field in the first uplink control information UCI, wherein the first field is used to request measurement of spatial parameters of a first channel or a first signal; or, the first field is used to request switching of the spatial parameters of the first channel or the first signal; or, the first field is used to request recovery of the spatial parameters of the first channel or the first signal.

[0021] In combination with the first aspect and the second aspect, in a possible design, the first indication information is also used to indicate a first spatial parameter group, and the first spatial parameter group includes a first spatial parameter.

[0022] In combination with the first aspect and the second aspect, in a possible design, the first indication information is used to indicate a second reference signal resource set, and the second reference signal resource set includes at least one reference signal resource corresponding to a spatial parameter.

[0023] In combination with the first aspect and the second aspect, in one possible design, the first spatial parameter group is related to the second spatial parameter, the second spatial parameter is the spatial parameter of the first channel, or the second spatial parameter is the spatial parameter of the first signal, and the signal quality of the first signal is less than or equal to the spatial parameter of the first threshold.

[0024] In combination with the first aspect and the second aspect, in a possible design, the first spatial parameter group is determined according to the second spatial parameter group.

[0025] In combination with the first aspect and the second aspect, in a possible design, a correlation between any one spatial parameter in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold.

[0026] Based on this possible design, since there is continuity in the change of the beam (i.e., the spatial parameters of the first channel or the first signal), when the beam changes, for the first channel or the first signal, the beam that has a stronger correlation with the beam before the change has better performance. Therefore, the terminal device can determine the beam that has a stronger correlation with the beam before the change as the first spatial parameter group, and report it to the network device, so that the network device can determine the first spatial parameter or the first reference signal resource set based on the first spatial parameter group. Compared with the solution in which the network device determines the first spatial parameter or the first reference signal resource set from all the spatial parameters of the first channel or the first signal, it can save resource consumption and reduce the delay and complexity of determining the first spatial parameter or the first reference signal resource set.

[0027] In combination with the first aspect and the second aspect, in a possible design, a difference between an index of any one spatial parameter in the first spatial parameter group and an index of the second spatial parameter is less than or equal to a third threshold.

[0028] Based on this possible design, since the change of the beam (i.e., the spatial parameter of the first channel or the first signal) is continuous, when the beam changes, for the first channel or the first signal, the beam near the beam before the change (i.e., the spatial parameter whose difference with the index of the second spatial parameter is less than or equal to the third threshold) has better performance. Therefore, the terminal device can determine the beam near the beam before the change as the first spatial parameter group and report it to the network device, so that the network device can determine the first spatial parameter or the first reference signal resource set based on the first spatial parameter group. Compared with the solution in which the network device determines the first spatial parameter or the first reference signal resource set from all the spatial parameters of the first channel or the first signal, it can save resource consumption and reduce the delay and complexity of determining the first spatial parameter or the first reference signal resource set.

[0029] In combination with the first aspect and the second aspect, in a possible design, the first indication information corresponds to a first index, and the first index is the same as the index of the control resource set group CORESET pool corresponding to the second indication information.

[0030] In combination with the first aspect and the second aspect, in a possible design, the first indication information corresponds to a first index, and the first index is the same as the index of the control resource set group CORESET pool corresponding to the second spatial parameter.

[0031] Based on the above two possible designs, since the CORESET pool is configured by the network device for the terminal device, different network devices are different, that is, the network device configuring the CORESET pool can be determined according to the index of the CORESET pool. Therefore, it can also be considered that the first index is used to indicate the network device configuring the CORESET pool. Therefore, in the multi-TRP transmission mode, after the terminal device sends the first indication information to multiple network devices, the multiple network devices can know the network device that responds to the first indication information through the first index.

[0032] In a third aspect, a communication device is provided for implementing various methods. The communication device may be the terminal device in the first aspect or the network device in the second aspect, or a device contained in the terminal device or the network device, such as a chip or a chip system. The communication device includes a module, unit, or means corresponding to the implementation method, and the module, unit, or means may be implemented by hardware, software, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the functions.

[0033] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be used to implement the processing function in any of the above aspects and any possible implementations thereof. The transceiver module may include a receiving module and a sending module, respectively used to implement the receiving function and the sending function in any of the above aspects and any possible implementations thereof.

[0034] In some possible designs, the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0035] In a fourth aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any aspect. The communication device can be the terminal device in the first aspect or the network device in the second aspect, or a device included in the terminal device or the network device, such as a chip or a chip system.

[0036] In a fifth aspect, a communication device is provided, comprising: a processor and a communication interface; the communication interface is used to communicate with a module outside the communication device; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any aspect. The communication device can be the terminal device in the first aspect or the network device in the second aspect, or a device included in the terminal device or the network device, such as a chip or a chip system.

[0037] In a sixth aspect, a communication device is provided, comprising: at least one processor; the processor is used to execute a computer program or instruction stored in a memory, so that the communication device performs the method described in any aspect. The memory may be coupled to the processor, or may be independent of the processor. The communication device may be the terminal device in the first aspect or the network device in the second aspect, or a device included in the terminal device or the network device, such as a chip or a chip system.

[0038] In some possible designs, the communication device includes a memory for storing necessary program instructions and data.

[0039] In some possible designs, when the device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0040] It can be understood that when the communication device provided in any one of the third to sixth aspects is a chip, the sending action / function of the communication device can be understood as output information, and the receiving action / function of the communication device can be understood as input information.

[0041] In a seventh aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored, and when the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the aspects.

[0042] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, enables the communication device to execute the method described in any one of the aspects.

[0043] Among them, the technical effects brought about by any design method in the third to eighth aspects can refer to the technical effects brought about by different design methods in the above-mentioned first or second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of a communication system used in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of a framework of another communication system used in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of a beam indication process provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of a media access control-control element MAC-CE signaling provided for an embodiment of the present application;

[0048] Figure 5 A schematic diagram of another process of beam indication applied in an embodiment of the present application;

[0049] Figure 6 A flow chart of a communication method provided in an embodiment of the present application;

[0050] Figure 7 A flowchart of another communication method provided in an embodiment of the present application;

[0051] Figure 8 A flowchart of another communication method provided in an embodiment of the present application;

[0052] Fig. 9 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0053] Fig.10 A schematic diagram of the structure of another communication device provided in an embodiment of the present application;

[0054] Fig.11 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The technical solution provided in the present application can be used for various communication systems, which can be a third generation partnership project (3GPP) communication system, for example, a fourth generation (4G) long term evolution (LTE) system, an evolved LTE system (LTE-Advanced, LTE-A) system, a fifth generation (5G) new radio (NR) system, a vehicle to everything (V2X) system, a system of LTE and NR hybrid networking, or a device-to-device (D2D) system, a machine to machine (M2M) communication system, an Internet of Things (IoT), a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a LTE frequency division duplex (FDD) system, and a 5G new radio (NR) system. duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, and other next generation communication systems, such as the sixth generation (6G) communication system. Alternatively, the communication system may also be a non-3GPP communication system without limitation.

[0056] Among them, the above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this. It is uniformly explained here and will not be repeated below.

[0057] See also Figure 1 , is an exemplary communication system provided by the present application. The communication system includes at least one network device and at least one terminal device. Optionally, different terminal devices can communicate with each other.

[0058] Optionally, information transmission between network devices and terminal devices can be achieved through transmission media such as radio waves, visible light, laser, infrared light, optical fiber, etc.

[0059] Optionally, the network device in the embodiment of the present application is a device that connects a terminal device to a wireless network. The network device may be a node in a wireless access network, which may also be referred to as a base station, or a radio access network (RAN) node (or device).

[0060] For example, the network device may include an evolved NodeB (eNB or e-NodeB) in an LTE system or an LTE-A system, such as a traditional macro eNB and a micro eNB in ​​a heterogeneous network scenario. Alternatively, it may include a next generation node B (gNB) of wideband code division multiple access (WCDMA). Alternatively, it may include a transmission reception point (TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a base band unit (BBU), a base band pool (BBU pool), a base transceiver station (BTS) in a global system for mobile communication (GSM) or code division multiple access (CDMA) network, or a wireless fidelity (WiFi) access point (AP), etc. Alternatively, it may include a base station in NTN, that is, it may be deployed on a high-altitude platform or satellite. In NTN, the network device may be used as a layer 1 (L1) relay, or as a base station, or as a distributed unit (DU), or as an integrated access and backhaul (IAB) node. Alternatively, the network device may be a device that implements the base station function in IoT, such as a device that implements the base station function in V2X, D2D, or machine to machine (M2M), or it may include a vehicle-mounted device or a wearable device, or it may include a network device in a 5G network or a public land mobile network (PLMN) that evolves after 5G, and the embodiments of the present application are not limited thereto.

[0061] In some possible scenarios, the network device in the embodiment of the present application may also be a module or unit that can implement some functions of the base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU may be set separately, or may be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0062] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the access network device may be a network device or a module of a network device in an open radio access network (open RAN, ORAN) system. In the ORAN system, CU may also be referred to as open (open, O)-CU, DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0063] Optionally, the base station in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, home base stations, TRPs, transmitting points (TP), mobile switching centers, etc., and the embodiments of the present application do not specifically limit this.

[0064] Optionally, the terminal device in the embodiment of the present application may be a user-side device for implementing a wireless communication function, such as a terminal or a chip that can be used in a terminal, etc. The terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a terminal agent or a terminal device, etc. in a 5G network or a PLMN evolved after 5G. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a smart phone, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device or a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a wireless data card, a tablet computer, a wireless modem, a handheld device (handset), a laptop computer, a machine type communication (MTC) terminal, etc. Alternatively, the terminal may be a terminal with a communication function in IoT, such as a terminal in V2X (eg, a vehicle networking device), a terminal in D2D communication, or a terminal in M2M communication, etc. The terminal may be mobile or fixed.

[0065] Optionally, the roles between the network device and the terminal device may be relative, for example, Figure 1In the terminal device #9 and terminal device #10, since the terminal device #10 needs to access the network device #1 through the terminal device #9, the terminal device #9 can be configured as a network device relative to the terminal device #10; and relative to the network device #1, the terminal device #9 is a terminal device, that is, the network device #1 and the terminal device #9 communicate through the wireless air interface protocol. Optionally, the network device #1 and the terminal device #9 can also communicate through the interface protocol between network devices. At this time, relative to the network device #1, the terminal device #9 also acts as a network device.

[0066] Optionally, the network device and the terminal device, the network device and the network device, or the terminal device and the terminal device can communicate through the authorized spectrum, or can communicate through the unlicensed spectrum, or can communicate through the authorized spectrum and the unlicensed spectrum at the same time. Optionally, the network device and the terminal device, the network device and the network device, or the terminal device and the terminal device can communicate through the spectrum below 6 gigahertz (GHz), or can communicate through the spectrum above 6 GHz, or can use the spectrum below 6 GHz and the spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0067] Below in conjunction with accompanying drawing, the communication method that embodiment of the present application provides is described.It is understandable that, in embodiment of the present application, network equipment or terminal equipment can perform part or all of the steps in embodiment of the present application, and these steps or operations are only examples, and embodiment of the present application can also perform other operations or the deformation of various operations.In addition, each step can be performed in the different order presented in embodiment of the present application, and it is possible not to perform all the operations in embodiment of the present application.

[0068] As an example, the communication system of the present application can be applied to a single CC or carrier aggregation (CA) scenario.

[0069] Exemplarily, in this example, the communication system of the present application is as follows Figure 2 As shown in (a), Figure 2 The network device #1 in (a) communicates with the terminal device #1 via a wireless network. It should be understood that the network device #1 provides services for one or more cells.

[0070] As another example, the communication system of the present application may be applied to a dual connectivity (DC) or coordinated multipoint transmission / reception (CoMP) scenario.

[0071] Exemplarily, in this example, the communication system of the present application is as follows Figure 2 As shown in (b), Figure 2 In (b), network device #1 is the network device when terminal device #1 initially accesses, and is responsible for radio resource control (RRC) communication with terminal device #1. Network device #2 is added during RRC reconfiguration to provide additional radio resources.

[0072] The above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this. For example, the number of network devices and terminal devices included in the communication system can also be other numbers, or a single base station, multi-carrier aggregation scenario, dual-link scenario or D2D communication scenario can be adopted.

[0073] Optionally, the technical solution of the embodiment of the present application can be applied to beam indication in a single CC or CA scenario, or beam indication in a DC scenario.

[0074] Optionally, the technical solution in the embodiment of the present application can be applied to the case where the primary cell (Pcell) is high frequency or low frequency, and the secondary cell (Scell) is high frequency or low frequency, for example, when the Pcell is low frequency and the Scell ​​is high frequency. Usually low frequency and high frequency are relative, and can also be divided by a specific frequency, such as 6GHz.

[0075] It should be understood that the technical solution of the embodiment of the present application can also be applied to beam indication in a coordinated multipoint transmission / reception (CoMP) scenario. CoMP can be one or more scenarios of non coherent joint transmission (NCJT), coherent joint transmission (CJT), joint transmission (JT), etc.

[0076] In order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction to the related technologies of the present application is first given as follows.

[0077] 1. Control resource set (CORESET)

[0078] A control resource set is a resource set used to transmit downlink control information, which can also be called a control resource region or a physical downlink control channel resource set. A network device can configure one or more CORESETs for a terminal device to send a physical downlink control channel (PDCCH). A network device can send a PDCCH to a terminal device on any CORESET corresponding to the terminal device.

[0079] In addition, the network device may also configure other configuration information associated with the CORESET for the terminal device, such as a search space set, etc. There are differences in other configuration information associated with each CORESET, such as differences in frequency domain width, time domain length, etc.

[0080] Exemplarily, CORESET includes but is not limited to: CORESET, control region, or enhanced-physical downlink control channel (ePDCCH) set defined in a 5G mobile communication system.

[0081] In the embodiment of the present application, the time-frequency resources occupied by the PDCCH may be referred to as a downlink control region. Exemplarily, the PDCCH is always located in the first m symbols of a subframe, where m may be 1, 2, 3, or 4, and the first m symbols are the downlink control region.

[0082] Optionally, the downlink control region can be flexibly configured by RRC signaling through CORESET and search space set. Among them, CORESET can configure the frequency domain resources of PDCCH or control channel element (CCE), the number of continuous symbols in the time domain and other information. The search space set can configure the detection period, offset, and starting symbol of PDCCH in a time slot and other information.

[0083] Exemplarily, the search space set may configure the PDCCH period to be 1 time slot, and the time domain start symbol to be symbol 0, so that the terminal device may detect the PDCCH at the start position of each time slot.

[0084] 2. Beam:

[0085] A beam is a communication resource that refers to the distribution of signal strength formed by a wireless signal in different directions in space. A beam can also be called a spatial domain filter or a spatial parameter.

[0086] Optionally, multiple beams with the same or similar communication characteristics may be considered as one beam. One beam corresponds to one or more antenna ports, which are used to transmit data channels, control channels, and sounding signals. One or more antenna ports corresponding to one beam may also be considered as an antenna port set.

[0087] Different beams can be considered as different resources. For example, a beam can be a time domain resource, a frequency domain resource, a spatial domain resource (i.e., a spatial parameter), etc. The same information can be sent / received through different beams, or different information can be sent / received.

[0088] Optionally, the beam may also be a reference signal resource (eg, a beam-forming reference signal resource) or beam-forming information. Alternatively, the beam may also represent information associated with a reference signal resource of a network device.

[0089] Exemplarily, the reference signals include, but are not limited to: channel state information reference signal (CSI-RS), synchronization signal / physical broadcast channel block (SS / PBCH block) (for the convenience of description, the SS / PBCH block is referred to as synchronization signal block (SSB) below), demodulation reference signal (DMRS), phase tracking reference signal (PTRS), and tracking reference signal (TRS).

[0090] The information associated with the reference signal resource includes, but is not limited to, a reference signal resource identifier or quasi-collocation (QCL) information. The reference signal resource identifier corresponds to a transmit-receive beam pair established based on the reference signal resource measurement before the current moment. Through the reference signal resource index, the terminal device can infer the beam information.

[0091] 3. Space parameters:

[0092] Spatial parameters may also be referred to as spatial characteristics. Spatial parameters may include QCL information, or spatial parameters may also include spatial relation information. QCL information is used to indicate spatial parameters of downlink signals, and spatial relation information is used to indicate spatial parameters of uplink signals. In other words, QCL information is used to assist in describing the receiving beam of a terminal device, and spatial relation information is used to assist in describing the transmitting beam of a terminal device.

[0093] Exemplarily, uplink signals include but are not limited to: physical uplink control channel (PUCCH), PUSCH, sounding reference signal (SRS), PTRS, DMRS. Downlink signals include but are not limited to: PDCCH, PDSCH, TRS, CSI-RS, SSB, DMRS, PTRS, TRS.

[0094] The spatial relation information is used to indicate the relationship between the spatial parameters of two reference signals. For example, the two reference signals are the target reference signal and the reference signal. The target reference signal is generally an uplink signal. For example, the target reference signal includes but is not limited to: DMRS, SRS. The source reference signal includes but is not limited to: CSI-RS, SRS, SSB.

[0095] QCL information can be used to indicate the QCL relationship between two reference signals. For example, the two reference signals are a target reference signal and a reference signal. The target reference signal is generally a downlink signal. For example, the target reference signal includes but is not limited to: DMRS, CSI-RS. The source reference signal includes but is not limited to: CSI-RS, TRS, SSB.

[0096] Taking the QCL information of PDCCH as an example, the network device can configure K candidate QCL information (for example, K transmission configuration indicator (TCI) states (TCI-state)) for the terminal device through RRC; further, through the media access control (MAC) control element (CE) (MAC-CE), the QCL information of PDCCH is indicated from the K candidate QCL information. Wherein, K is an integer greater than 1 or equal to 1.

[0097] The signals corresponding to the antenna ports having a QCL relationship may have the same or similar spatial characteristic parameters (or called parameters); or, the spatial characteristic parameters (or called parameters) of one antenna port may be used to determine the spatial characteristic parameters (or called parameters) of another antenna port having a QCL relationship with the antenna port; or, the two antenna ports have the same or similar spatial characteristic parameters (or called parameters); or, the difference in the spatial characteristic parameters (or called parameters) between the two antenna ports is less than a certain threshold.

[0098] It should be understood that the spatial parameters of two reference signals (or two channels, or a reference signal and a signal) having a QCL relation / spatial relation are the same (or close, or similar), so that the spatial parameters of the target reference signal can be inferred based on the index of the source reference signal resource.

[0099] Exemplarily, the spatial parameters include, but are not limited to, angle of arrival (AoA), dominant angle of incidence AoA, average angle of incidence, power angular spectrum (PAS) of the angle of incidence, angle of departure (AoD), dominant departure angle, average departure angle, power angular spectrum of the departure angle, terminal device transmit beamforming, terminal device receive beamforming, spatial channel correlation, network device transmit beamforming, network device receive beamforming, average channel gain, average channel delay, delay spread, Doppler spread, Doppler shift, or spatial reception parameters.

[0100] The spatial parameters describe the spatial channel characteristics between the antenna ports of the source reference signal and the target reference signal, which helps the terminal device to complete the receiving side beamforming or receiving processing according to the QCL information, and / or helps the terminal device to complete the transmitting side beamforming or transmitting processing according to the spatial relation information. For example, the terminal device can receive the target reference signal according to the receiving beam information of the source reference signal indicated by the QCL information. Alternatively, the terminal device can transmit the target reference signal according to the transmitting beam information of the source reference signal indicated by the spatial relation information.

[0101] Exemplarily, the network device may indicate to the terminal device that the demodulation reference signal of the PDCCH or PDSCH satisfies the QCL relationship with one or more of the multiple reference signal resources previously reported by the terminal device (or it may be considered that the demodulation reference signal of the PDCCH or PDSCH has a QCL relationship with one or more of the multiple reference signal resources previously reported by the terminal device). For example, the reference signal may be a CSI-RS. Each reported CSI-RS resource index corresponds to a transmit / receive beam pair previously established based on the measurement of the CSI-RS resource. It should be understood that the receiving beam information of two reference signals or channels that satisfy the QCL relationship is the same, and the terminal device can infer the receiving beam information of the received PDCCH or PDSCH based on the reference signal resource index.

[0102] In the existing protocol, QCL relationship can be divided into the following four types based on different parameters: Type A: Doppler shift, Doppler spread, average delay, delay spread; Type B: Doppler shift, Doppler spread; Type C: Doppler shift, average delay; and Type D: Spatial Rx parameter.

[0103] The network device can configure one or more types of QCL for the terminal device at the same time, such as QCL type A+D, C+D, etc.

[0104] When the QCL relationship refers to a QCL relationship of type D, it can be considered as spatial QCL. When the antenna port satisfies the spatial QCL relationship, it can be a QCL relationship between a port of a downlink signal and a port of a downlink signal, or between a port of an uplink signal and a port of an uplink signal (as referred to as spatial relation above). For example, for the QCL relationship between a downlink signal and an uplink signal, or the QCL relationship between an uplink signal and a port of a downlink signal, the two signals may have the same AOA or AOD, which is used to indicate that they have the same receiving beam or transmitting beam. For another example, for the QCL relationship between a downlink signal and an uplink signal, or the QCL relationship between an uplink signal and a port of a downlink signal, the AOA and AOD of the two signals may have a corresponding relationship, or the AOD and AOA of the two signals may have a corresponding relationship, that is, beam reciprocity may be used to determine the uplink transmitting beam according to the downlink receiving beam, or to determine the downlink receiving beam according to the uplink transmitting beam.

[0105] From the perspective of the transmitter, if two antenna ports are spatially QCL, it means that the corresponding beam directions of the two antenna ports are consistent in space. From the perspective of the receiver, if two antenna ports are spatially QCL, it means that the receiver can receive the signals sent by the two antenna ports in the same beam direction.

[0106] The signal transmitted on the port with a spatial QCL relationship may also have a corresponding beam, and the corresponding beam may include one or more of the following: the same receiving beam, the same transmitting beam, a transmitting beam corresponding to the receiving beam (such as it may correspond to a scenario with reciprocity), and a receiving beam corresponding to the transmitting beam (such as it may correspond to a scenario with reciprocity).

[0107] Signals transmitted on ports with a spatial QCL relationship can also be understood as signals received or sent using the same spatial filter. The spatial filter can be one or more of the following: precoding, antenna port weights, antenna port phase shift, or antenna port amplitude gain.

[0108] The signal transmitted on the port with a spatial QCL relationship can also be understood as having a corresponding beam pair link (BPL), and the corresponding BPL includes one or more of the following: the same downlink BPL, the same uplink BPL, an uplink BPL corresponding to the downlink BPL, or a downlink BPL corresponding to the uplink BPL.

[0109] Therefore, the spatial reception parameter (ie, QCL of type D) may be understood as a parameter for indicating the direction information of the reception beam.

[0110] In the examples of the present application, the correspondence between certain parameters can also be applied to the scenarios described by QCL.

[0111] It should be understood that the scenario applicable to the QCL assumption in the present application may also be two reference signals, or may also be an association relationship between transmission objects.

[0112] 4. TCI-state:

[0113] TCI-state includes QCL information of a signal or channel, or TCI-state is used to indicate QCL information of a signal or channel, and is configured by a network device to a terminal device. Exemplary channels include but are not limited to: PDCCH, CORESET, PDSCH. Signals include but are not limited to: CSI-RS, DMRS, TRS.

[0114] Exemplarily, TCI-state may indicate that the reference signal / channel included in the TCI satisfies the QCL relationship with the target reference signal / target channel, so that the terminal device may infer the spatial parameters of the target reference signal / target channel according to TCI-state.

[0115] TCI-state is configured by the network device to the terminal device. Specifically, the TCI-state field includes the TCI-state identifier (tci-StateId) field and two DCL type (qcl-Type1 and qcl-Type1) fields. Among them, for a DCL type (such as qcl-Type1 or qcl-Type1) field, it includes a cell field, a partial bandwidth identifier (bwp-Id) field, and an associated signal (referenceSignal) field. Among them, the cell field is used to indicate the index of the serving cell, and the referenceSignal field indicates two associated reference signals, such as a CRI-RS signal and an SSB signal. Exemplarily, a TCI-state can be configured with one or more source reference signals. In other words, the configuration information of a TCI-state may include the identifiers of one or more source reference signal resources.

[0116] In addition, in the TCI-states configured for different cells and different BWPs, if the index of the TCI-state is the same, the configuration of the corresponding TCI-state is also the same.

[0117] The unified TCI-state can simultaneously indicate the spatial parameters (i.e., beams) of at least two types of channels / signals; that is, the beam indicated by the unified TCI-state (e.g., the beam corresponding to the QCL information indicated by the unified TCI-state) can be used for the transmission of at least two types of channels / signals. That is, at least two types of channels / signals share the beam indicated by the unified TCI-state.

[0118] Exemplarily, taking the use of unified TCI-state to indicate PDSCH as an example, RRC signaling can configure a unified TCI-state pool for the terminal device, or RRC signaling indicates that the current TCI-state can simultaneously indicate spatial parameters of at least two types of channels / signals. Thus, after MCC-CE signaling indicates one or more unified TCI-states, a unified TCI-state indicated by DCI from one or more unified TCI-states can be used for the transmission of at least two types of channels / signals.

[0119] Exemplarily, the MCC-CE signaling indicates the implementation of one or more unified TCI-states and the above Figure 3 The implementation of MCC-CE signaling in (a) is similar. For details, please refer to the above Figure 3 The relevant description of (a) in the above description will not be repeated here.

[0120] 5. Reference signal:

[0121] Reference signals can be divided into two categories according to their functions: one type of reference signal is used for channel estimation, which can realize the demodulation of the received signal containing control information or data; the other type of reference signal is used for channel status / channel quality measurement, which can realize the scheduling of user equipment (UE).

[0122] Exemplarily, the UE can obtain CSI based on the measurement of the channel quality of CSI-RS, where the CSI may include: one or more of: rank indicator (RI), precoding matrix indicator (PMI), and channel quality indicator (CQI). Further, the UE can send the CSI to the base station to achieve channel estimation.

[0123] A non-periodic reference signal may refer to a reference signal that does not arrive at the receiving end at a predetermined fixed time interval. Alternatively, it may refer to a reference signal that is not sent by the transmitting end at a predetermined fixed time interval. For example, dynamically scheduled signals are generally non-periodic signals. Alternatively, although the transmitting end sets the reference signal to be sent as a periodically transmitted signal, due to various reasons, the reference signal cannot be sent at a determined fixed time interval. In this case, such a reference signal is also considered to be a non-periodic transmitted reference signal. For example, when a signal is transmitted on an unlicensed spectrum, the signal is delayed due to a channel sensing failure. In this case, the signal that should have been transmitted periodically is actually transmitted non-periodically. For another example, when the transmitting end sends a reference signal, a higher priority signal is being received, causing the transmitting end to be unable to send the reference signal. This may also cause the reference signal to be actually transmitted non-periodically.

[0124] Exemplarily, the non-periodic reference signal may include CSI-RS, DMRS, SSB, etc.; or, the reference signal may also include other non-periodic parameter signals in addition to the above examples, and the embodiments of the present application are not limited here.

[0125] 6. Beam indication:

[0126] Method 1: beam indication based on a single transmission reception point (TRP).

[0127] Exemplarily, based on different types of channels or signals, the beam indication information may include the following multiple possible implementations:

[0128] In a first possible implementation manner, the beam indication information is the beam information of the PDSCH (for example, the beam indication information may be the QCL information indicated by the TCI-state).

[0129] As an example, the indication of the beam information of the PDSCH may be based on Figure 3 Steps S301 to S303 shown in (a) of FIG. 1 are implemented as follows:

[0130] S301, the network device sends RRC signaling to the terminal device, and correspondingly, the terminal device receives the RRC signaling from the network device, wherein the RRC signaling indicates multiple TCI-states.

[0131] Optionally, RRC signaling may indicate multiple TCI-states by indicating a TCI-state list. Exemplarily, RRC signaling may indicate multiple TCI-states through a tci-statesToAddModList field.

[0132] Exemplarily, the multiple TCI-states indicated by the RCC signaling may include PDSCH TCI-states corresponding to all spatial parameters of PDSCH.

[0133] S302: The network device sends a MAC-CE signaling to the terminal device, and correspondingly, the terminal device receives the MAC-CE signaling from the network device, wherein the MAC-CE signaling indicates one or more TCI-states among a plurality of TCI-states.

[0134] Optionally, the network device may determine the one or more TCI-states based on beam measurement (i.e., beam scanning) of spatial parameters corresponding to the multiple TCI-states. That is, before step S402, beam measurement (i.e., beam scanning) may also be performed to determine the one or more TCI-states.

[0135] Exemplarily, MAC-CE signaling indicates one or more TCI-states among multiple TCI-states, which can also be understood as: MAC-CE signaling activates one or more TCI-states among one or more TCI-states, and maps the one or more TCI-states to the TCI field of downlink control information (DCI). It can be understood that, taking a TCI-state as an example, if MAC-CE signaling activates the TCI-state, the TCI-state is mapped to the TCI field of the DCI; if MAC-CE signaling deactivates the TCI-state, the TCI-state will not be mapped to the TCI field of the DCI.

[0136] Optionally, the number of TCI-states indicated by the MAC-CE signaling is less than or equal to 8. That is, the MAC-CE signaling can activate at most 8 TCI-states among the multiple TCI-states, and can map at most 8 TCI-states to different code points of the TCI field of the DCI.

[0137] Exemplarily, taking the MAC-CE signaling indicating up to 8 TCI-states as an example, the mapping relationship between one or more TCI-states and the TCI field of the DCI includes the content shown in Table 1:

[0138] Table 1

[0139] Code point of the TCI field TCI-state 000 TCI-state ID#1 001 TCI-state ID#2 010 TCI-state ID#3 011 TCI-state ID#4 100 TCI-state ID#5 101 TCI-state ID#6 110 TCI-state ID#7 111 TCI-state ID#8

[0140] Among them, TCI-state ID#1 to TCI-state ID#8 in Table 1 respectively represent that MAC-CE signaling indicates 8 TCI-states. Therefore, DCI can indicate one TCI-state among the 8 TCI-states by indicating the code point of the TCI field.

[0141] For example, Figure 4 As shown, MAC-CE signaling includes a serving cell indicator (ID) field, a BWP ID, and fields corresponding to each TCI-state. Among them, the serving cell ID field is used to indicate the ID of the serving cell to which one or more TCI-states belong; the BWP ID field is used to indicate the downlink bandwidth area to which one or more TCI-states are applied. The field corresponding to any one of the one or more TCI-states is used to indicate whether the TCI-state is activated and whether it is mapped to the TCI field of the DCI.

[0142] For example, if the value of the field corresponding to TCI-state is 1, it can indicate that the TCI-state is activated and mapped to the TCI field of DCI; correspondingly, if the value of the field corresponding to TCI-state is 0, it can indicate that the TCI-state is deactivated and will not be mapped to the TCI field of DCI. Alternatively, if the value of the field corresponding to TCI-state is 0, it can indicate that the TCI-state is activated and mapped to the TCI field of DCI; correspondingly, if the value of the field corresponding to TCI-state is 1, it can indicate that the TCI-state is deactivated and will not be mapped to the TCI field of DCI.

[0143] S303. The network device sends downlink control information (DCI) to the terminal device. Correspondingly, the terminal device receives the DCI from the network device. The DCI indicates the beam information of the terminal device. The beam information includes one TCI-state among one or more TCI-states. Thus, the spatial parameters indicated by the one TCI-state are used for the transmission of PDSCH.

[0144] Exemplarily, the network device may indicate one of the one or more TCI-states through different values ​​of the TCI field according to the content shown in Table 1 above.

[0145] As another example, the indication of the beam information of the PDSCH may be based on the following: Figure 3 Steps S304 to S305 shown in (b) of FIG. 1 are implemented as follows:

[0146] S304, wherein step S304 is the same as step S301, and the details may refer to the relevant description of the above step S301 and will not be repeated here.

[0147] S305. The network device sends DCI to the terminal device, and correspondingly, the terminal device receives DCI from the network device. The DCI indicates the beam information of the terminal device. The beam information includes one TCI-state among multiple TCI-states. Thus, the spatial parameters indicated by the one TCI-state are used for the transmission of PDSCH.

[0148] Optionally, the network device may perform beam measurement (i.e., beam scanning) on ​​spatial parameters corresponding to multiple TCI-states to determine a TCI-state indicated by the DCI. That is, before step S402, beam measurement (i.e., beam scanning) may also be performed to determine the TCI-state.

[0149] In a second possible implementation manner, the beam indication information is the beam information of the PDCCH (for example, the beam indication information may be the QCL information indicated by the TCI-state).

[0150] Exemplarily, the indication of the beam information of the PDSCH may be based on the following: Figure 5 The steps S501 to S503 shown are implemented as follows:

[0151] S501, wherein step S501 is the same as step S301, and the details may refer to the relevant description of the above step S401 and will not be repeated here.

[0152] S502: The network device sends an RRC signaling to the terminal device, and correspondingly, the terminal device receives the RRC signaling from the network device, wherein the RRC signaling indicates one or more TCI-states among a plurality of TCI-states.

[0153] Exemplarily, the network device may determine the one or more TCI-states based on beam measurement (i.e., beam scanning) of spatial parameters corresponding to the multiple TCI-states. That is, before step S502, beam measurement (i.e., beam scanning) may also be performed to determine the one or more TCI-states.

[0154] S503. The network device sends a MAC-CE signaling to the terminal device, and correspondingly, the terminal device receives the MAC-CE signaling from the network device. The MAC-CE signaling indicates the beam information of the terminal device. The beam information includes one TCI-state in one or more TCI-states. Thus, the spatial parameters indicated by the one TCI-state are used for the transmission of the PDCCH.

[0155] In a third possible implementation manner, the beam indication information is beam information of the CSI-RS (for example, the beam indication information may be QCL information indicated by the TCI-state).

[0156] Optionally, the network device may indicate beam information of the terminal device through RRC signaling. The beam information includes one TCI-state among multiple TCI-states. Thus, the spatial parameters indicated by the one TCI-state are used for the transmission of CSI-RS.

[0157] Exemplarily, multiple TCI-states may be configured by a network device, and details may be referred to the related description of the above step S501 and will not be repeated here.

[0158] Exemplarily, the network device may determine one TCI-state among multiple TCI-states based on performing beam measurement (ie, beam scanning) on ​​spatial parameters respectively corresponding to the multiple TCI-states.

[0159] In a fourth possible implementation manner, the beam indication information is beam information of the PUCCH (for example, the beam indication information may be spatial relation information indicated by the TCI-state).

[0160] As an example, the network device may indicate the beam information of the terminal device through RRC signaling. The specific implementation may refer to the relevant description in the above third possible implementation method, which will not be repeated here.

[0161] As another example, the network device may indicate the beam information of the terminal device through MAC-CE signaling. Figure 3 The relevant description of (b) in the above description will not be repeated here.

[0162] In a fifth possible implementation manner, the beam indication information is beam information of the SRS (for example, the beam indication information may be spatial relation information indicated by the TCI-state).

[0163] Exemplarily, SRS includes periodic SRS, semi-periodic SRS, and non-periodic SRS. For periodic SRS, the implementation method of its beam information is similar to the implementation method of the beam information of the above-mentioned CSI-RS; for semi-periodic SRS and non-periodic SRS, the implementation method of its beam information is similar to the implementation method of the beam information of the above-mentioned PUCCH; for details, please refer to the relevant description of the beam information of the above-mentioned CSI-RS and / or the beam information of PUCCH, which will not be repeated here.

[0164] In a sixth possible implementation manner, the beam indication information is the beam information of the PUSCH (for example, the beam indication information may be the spatial relation information indicated by the TCI-state).

[0165] Exemplarily, the network device may indicate the beam information of the terminal device through DCI. Specifically, the network device may indicate one TCI-state among one or more TCI-states through different values ​​of the SRS resource indicator (SRI) field.

[0166] Method 2: beam indication based on multiple TRPs.

[0167] The 3rd Generation Partnership Project (3GPP) Release 16 (R16) standard defines a multi-transmission reception point (TRP) transmission mode (taking two TRPs as an example), that is, a terminal device is served by multiple cells at the same time, which is used to improve the rate and coverage of the cell edge.

[0168] As an example, one DCI indicates TCI-states corresponding to multiple TRPs. That is, one DCI is used to indicate two TCI-states. Specifically, the implementation of one DCI scheduling indicating TCI-states corresponding to multiple TRPs is the same as above. Figure 3 The process shown in (a) is similar to the above Figure 3 The difference between the process shown in (a) is that in the implementation of a DCI scheduling indicating TCI-states corresponding to multiple TRPs, the MAC-CE signaling maps the eight TCI-states to the TCI field of the DCI, and different code points of the TCI field can correspond to two TCI-states. Thus, the DCI can indicate two TCI-states among the eight TCI-states through the code points of the TCI field.

[0169] Exemplarily, in this example, since the TCI-states corresponding to multiple TRPs are respectively based on one DCI indication, the one DCI corresponds to one acknowledgment character (ACK) / negative acknowledgment character (NACK).

[0170] As another example, two DCIs respectively indicate different TCI-states in the TCI-states corresponding to multiple TRPs, that is, one DCI indicates one TCI-state in the TCI-states corresponding to multiple TRPs.

[0171] Specifically, each of the two DCIs indicates that the TCI-state is implemented in the same manner as above. Figure 3 The process is the same as shown in (a) above. Figure 3 The relevant description in (a) will not be repeated here.

[0172] Exemplarily, in this example, since the TCI-states corresponding to multiple TRPs are respectively indicated based on two DCIs, each of the two DCIs corresponds to an ACK / NACK.

[0173] According to the above beam indication process, the beam indication in the current new radio (NR) is initiated by the network device. And the network device periodically performs beam measurement; compared with the terminal device, the network device is not sensitive to the changes in the beam on the terminal device side (that is, it is impossible to timely know the changes in the beam on the terminal device side). For example, when the mobility of the terminal device (such as the moving speed and direction of the terminal device) changes, or the receiving antenna / receiving link of the terminal device is blocked, if this is not the time for the network device to perform beam measurement, then the network device cannot know the changes in the terminal device; resulting in the network device being unable to timely indicate the new beam to ensure the transmission of the signal or channel.

[0174] Based on this, an embodiment of the present application provides a communication method, in which a terminal device triggers the measurement, switching, or recovery of the spatial parameters of a first channel or a first signal (i.e., the beam of the first channel / first signal) by sending a first indication message. Compared with the network device, the terminal device can promptly learn about the changes in its beam (for example, the beam of the first channel / first signal does not match due to the movement of the terminal device), so the terminal device can send the first indication message in the case of a beam change, instructing the network device to measure, switch, or restore the spatial parameters of the first channel or the first signal, so that the network device can promptly indicate a new beam to the terminal device to ensure the transmission of the signal or channel, and ensure normal communication between the network device and the terminal device.

[0175] See also Figure 6 , is a communication method provided in an embodiment of the present application, the communication method comprising the following steps:

[0176] S601. The terminal device sends first indication information to the network device, and correspondingly, the terminal device receives the first indication information from the network device. The first indication information is used to request measurement of spatial parameters of a first channel or a first signal, where the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, the first indication information is used to request switching of spatial parameters of the first channel or the first signal; or, the first indication information is used to request recovery of spatial parameters of the first channel or the first signal.

[0177] Exemplarily, the first channel or the first signal can be understood as: a channel or signal being transmitted between the terminal device and the network device. For example, the first channel includes but is not limited to: PUCCH, PUSCH, PDCCH, PDSCH. The first signal includes but is not limited to: SRS, PTRS, DMRS, TRS, CSI-RS, SSB.

[0178] Optionally, the spatial parameter of the first channel or the first signal can be understood as: the spatial resources of the first channel or the first channel (such as a beam). Alternatively, it can also be understood as: the spatial resources that can be used to transmit the first channel or the first signal. The spatial parameter of the first channel or the first channel includes one or more spatial parameters. Alternatively, it can also be understood as: the qcl-Info configured for the first channel or the first signal. Alternatively, it can also be understood as: the specific TCI state in the qcl-Info configured for the first channel or the first signal.

[0179] Optionally, the first indication information is used to request measurement of a spatial parameter of a first channel or a first signal, which can be understood as: the first indication information is used to trigger measurement of a spatial parameter of a first channel or a first signal. At this time, the first indication information can also be referred to as a spatial parameter measurement request, or can also be referred to as a beam measurement request, or can also be other names without limitation.

[0180] Similarly, the first indication information is used to request switching of the spatial parameters of the first channel or the first signal, which can be understood as: the first indication information is used to trigger switching of the spatial parameters of the first channel or the first signal. At this time, the first indication information can also be called a switching request of the spatial parameters, or can also be called a beam switching request, or can also be other names, without limitation.

[0181] Similarly, the first indication information is used to request recovery of the spatial parameters of the first channel or the first signal, which can be understood as: the first indication information is used to trigger recovery of the spatial parameters of the first channel or the first signal. At this time, the first indication information can also be called a failure recovery request for the spatial parameters, or a beam failure recovery request, or other names without limitation.

[0182] Optionally, after receiving the first indication information from the terminal device, the operations of the network device may include the following two operations:

[0183] As a possible implementation manner, the network device does not respond to the first indication information, that is, the network device does not respond to the first indication information.

[0184] Exemplarily, under this possible implementation, the network device may not perform any operation. Alternatively, the network device may continue to perform its original operation. That is, the network device is not affected by the first indication information. At this time, it can also be considered that the first indication information fails to trigger the measurement of the spatial parameters of the first channel or the first signal, or the first indication information fails to trigger the switching of the spatial parameters of the first channel or the first signal, or the first indication information fails to trigger the recovery of the spatial parameters of the first channel or the first signal.

[0185] As another possible implementation manner, the network device responds to the first indication information.

[0186] Optionally, in this possible implementation, Figure 6 As shown, the communication method may further include step S602:

[0187] S602. The network device sends second indication information to the terminal device, and correspondingly, the network device receives the second indication information from the terminal device. The second indication information is used to indicate a first spatial parameter, and the first spatial parameter is used to transmit a first channel or a first signal; or the second indication information is used to indicate a first reference signal resource set, and at least one reference signal resource included in the first reference signal resource set corresponds to a spatial parameter. At least one reference signal resource set includes at least one first signal.

[0188] An embodiment of the present application provides a communication method, in which a terminal device triggers the measurement, switching, or recovery of a spatial parameter of a first channel or a first signal (i.e., a beam of the first channel / first signal) by sending a first indication message. Compared with a network device, a terminal device can promptly learn about changes in its beam (e.g., a beam mismatch of the first channel / first signal caused by movement of the terminal device), so the terminal device can send a first indication message in the event of a beam change, instructing the network device to measure, switch, or recover the spatial parameter of the first channel or the first signal, that is, the network device can start beam measurement or beam switching according to the first indication message, so that the network device can promptly indicate a new beam to the terminal device, thereby ensuring normal communication between the network device and the terminal device.

[0189] The above is an overall description of the communication method provided in the embodiment of the present application. The following describes steps S601 to S602 in the above embodiment respectively:

[0190] For step S601:

[0191] Optionally, the first indication information is located in the first field in the uplink control information (UCI), wherein the first field is used to request measurement of spatial parameters of a first channel or a first signal; or, the first field is used to request switching of the spatial parameters of the first channel or the first signal; or, the first field is used to request recovery of the spatial parameters of the first channel or the first signal.

[0192] Exemplarily, the implementation of the first field is introduced below by taking the example of the first field being used to request measurement of the spatial parameters of the first channel or the first signal.

[0193] As an example, when the UCI has a first field, the first field is used to request measurement of a spatial parameter of a first channel or a first signal.

[0194] As another example, the first field is a fixed field in the UCI, that is, the first field is newly defined in the UCI.

[0195] Exemplarily, in this example, the first field can be used to request measurement of the spatial parameters of the first channel or the first signal through the value of the first field.

[0196] For example, the first field can be represented by 1 bit. When the value of this 1 bit is 1, the first field is used to request the measurement of the spatial parameters of the first channel or the first signal; at this time, the value of the first indication information is 1. Alternatively, when the value of this 1 bit is 0, the first field is used to request the measurement of the spatial parameters of the first channel or the first signal; at this time, the value of the first indication information is 0. The above only describes the implementation of the first field using 1 bit as an example. In fact, the first field can also be 2 bits, or the first field can be greater than 2 bits, without limitation.

[0197] The above only takes the first field used to request the measurement of the spatial parameters of the first channel or the first signal as an example to illustrate the implementation of the first field. When the first field is used to request the switching of the spatial parameters of the first channel or the first signal, or when the first field is used to request the restoration of the spatial parameters of the first channel or the first signal, the implementation of the first field can refer to the relevant description of the implementation of the first field used to request the measurement of the spatial parameters of the first channel or the first signal, and will not be repeated here.

[0198] Exemplarily, the terminal device may send the first indication information based on the following two implementation methods:

[0199] As a possible implementation, the terminal device sends the first indication information based on the first condition, wherein the first condition includes one or more of the following: the first channel hybrid automatic repeat request (HARQ) feedback of the terminal device is NACK, and the signal quality of the first signal is less than or equal to the first threshold.

[0200] Optionally, the terminal device sends the first indication information, including: the terminal device determines that the first condition is met, and sends the first indication information. That is, when the first condition is met, the terminal device sends the first indication information to the network device.

[0201] Exemplarily, the signal quality of the first signal is less than or equal to the first threshold, including: the signal quality of the first signal is less than the first threshold, or the signal quality of the first signal is equal to the first threshold.

[0202] Optionally, the signal quality of the first signal is less than or equal to a first threshold, which can also be understood as: the signal quality of the first signal is within a first range, wherein a maximum value of the first range is equal to the first threshold.

[0203] Exemplarily, the signal quality of the first signal may be characterized by a reference signal received power (RSRP) of the first signal, or a signal to interference plus noise ratio (SINR) of the reference signal.

[0204] Exemplarily, the signal quality of the first signal is RSRP, and the first threshold is -100dBm.

[0205] Exemplarily, the signal quality of the first signal is SINR, and the first threshold is -20 dB.

[0206] Exemplarily, NACK and the first indication information may be carried in the same UCI. Alternatively, the first indication information may also be NACK; in this case, NACK is used to request measurement of the spatial parameters of the first channel or the first signal; or, NACK is used to request switching of the spatial parameters of the first channel or the first signal; or, NACK is used to request recovery of the spatial parameters of the first channel or the first signal.

[0207] Optionally, the terminal device sends the first indication information, including: if there is HARQ feedback as NACK, it is deemed that the first indication information is sent at the same time. That is, when there is HARQ feedback of PDSCH as NACK, a corresponding beam measurement or switching request is also included.

[0208] Based on this optional scheme, since the first channel HARQ feedback of the terminal device is NACK, the signal quality of the first signal is less than or equal to the first threshold, which means that the channel quality of the first channel or the signal quality of the first signal is poor, and a new beam (i.e., spatial parameters) needs to be switched. Therefore, at this time, the terminal device can send a first indication information to the network device to trigger the measurement, switching, or recovery of the spatial parameters of the first channel or the first signal (i.e., the beam of the first channel / first signal). That is, the network device can start beam measurement or beam switching, and compared with the scheme in which the network device periodically performs beam measurement, it can switch the beam in time to ensure normal communication between the network device and the terminal device.

[0209] As another possible implementation manner, the terminal device sends the first indication information based on an uplink scheduling request (scheduling request, SR).

[0210] Optionally, the terminal device sends the first indication information, including: if there is SR, sending the first indication information.

[0211] Exemplarily, the existence of SR can be understood as: the terminal device has a need to send PUSCH.

[0212] Based on this optional scheme, in the presence of SR, the terminal device sends a first indication message to the network device, which is used to trigger the measurement or switching of the spatial parameters of the first channel or the first signal (i.e., the beam of the first channel / first signal), so that the network device can promptly configure the preferred spatial parameters (i.e., the beam) for the terminal device, so that the terminal device can send PUSCH on the preferred spatial parameters, thereby ensuring normal communication between the network device and the terminal device.

[0213] As another possible implementation manner, the terminal device sends the first indication information based on the SR and the signal quality of the first signal.

[0214] Optionally, the terminal device sends a first indication message, including: if there is a first SR and the signal quality of the first signal is less than or equal to a first threshold, sending the first indication message.

[0215] Optionally, the terminal device sends the first indication information, including: if there is an SR, it is deemed that the first indication information is sent at the same time. That is, when there is an uplink scheduling request, a corresponding beam measurement or switching request is also included.

[0216] Exemplarily, in the above two possible implementations, the SR and the first indication information may be carried in the same UCI. Alternatively, the first indication information may also be the SR; in this case, the SR is used to request measurement of the spatial parameters of the first channel or the first signal; or, the SR is used to request switching of the spatial parameters of the first channel or the first signal; or, the SR is used to request recovery of the spatial parameters of the first channel or the first signal.

[0217] As an example, the first indication information can also be used to indicate a first spatial parameter group, and the first spatial parameter group includes the first spatial parameter. In this case, the first indication information is used to request measurement of the spatial parameters of the first channel, or the first indication information is used to request switching of the spatial parameters of the first channel, or the first indication information is used to request recovery of the spatial parameters of the first channel.

[0218] That is, when the first indication information is used to request measurement of the spatial parameters of the first channel, or the first indication information is used to request switching of the spatial parameters of the first channel, or the first indication information is used to request restoration of the spatial parameters of the first channel, the first indication information can also be used to indicate the first spatial parameter group.

[0219] Exemplarily, the first spatial parameter group may also be referred to as a first group of spatial parameters, and the first spatial parameter group includes one or more spatial parameters.

[0220] Exemplarily, the first indication information is used to indicate one or more TCI-states, and in this case, the first space parameter group includes one or more TCI-states. Since each TCI-state corresponds to a space parameter.

[0221] Optionally, when the first indication information is used to request measurement of the spatial parameters of the first channel or the first signal, or the first indication information is used to request switching of the spatial parameters of the first channel or the first signal, or when the first indication information is used to request recovery of the spatial parameters of the first channel or the first signal, the first spatial parameters corresponding to the first channel or the first signal may also be included in a set of predefined spatial parameter groups, and the predefined spatial parameter group may be the first spatial parameter group. Alternatively, it may also include obtaining the first spatial parameter corresponding to the first channel by measuring at least one spatial parameter included in the first spatial parameter group. Alternatively, it may also include sending the signal corresponding to the first channel through the first spatial parameter.

[0222] Optionally, when the first indication information is used to request measurement of the spatial parameter of the first channel or the first signal, or the first indication information is used to request switching of the spatial parameter of the first channel or the first signal, or when the first indication information is used to request recovery of the spatial parameter of the first channel or the first signal, the first spatial parameter corresponding to the first channel or the first signal may also be included in a spatial parameter group reported by a group of terminal devices, where the spatial parameter group may be a first spatial parameter group. Alternatively, it may also include that the terminal device reports the first spatial parameter group through the first indication information; or the terminal device reports the reference signal resource set index through the first indication information, the reference signal resource includes at least one reference signal, and each reference signal in the at least one reference signal corresponds to a spatial parameter. Alternatively, it may also include obtaining the first spatial parameter corresponding to the first channel. Alternatively, it may also include sending the signal corresponding to the first channel through the first spatial parameter. As another example, the first indication information is used to indicate a second reference signal resource set, and one or more reference signal resources included in the second reference signal resource set correspond to one or more spatial parameters included in the first spatial parameter group.

[0223] At this time, the first indication information is used to request measurement of the spatial parameter of the first signal, or the first indication information is used to request switching of the spatial parameter of the first signal, or the first indication information is used to request restoration of the spatial parameter of the first signal.

[0224] That is to say, when the first indication information is used to request measurement of the spatial parameters of the first signal, or the first indication information is used to request switching of the spatial parameters of the first signal, or the first indication information is used to request recovery of the spatial parameters of the first signal, the first indication information can also be used to indicate the second reference signal resource set.

[0225] Exemplarily, the one or more reference signal resources included in the second reference signal resource set correspond to the one or more spatial parameters included in the first spatial parameter group, which can be understood as: one or more reference signal resources correspond to one or more spatial parameters one by one. Since each reference signal resource corresponds to a TCI-state, and each TCI-state corresponds to a spatial parameter, it can be considered that the reference signal resource indirectly indicates the spatial parameter by indicating the TCI-state. Therefore, it can be considered that the second reference signal resource set indicates one or more spatial parameters. That is, the second reference resource set indicates the first spatial parameter group.

[0226] Exemplarily, the second reference signal resource set includes but is not limited to a CSI-RS resource set and an SRS resource set.

[0227] Optionally, the first spatial parameter group is determined according to a second spatial parameter, wherein the second spatial parameter is a spatial parameter of a first channel, or the second spatial parameter is a spatial parameter of a first signal, and a signal quality of the first signal is less than or equal to a first threshold.

[0228] Alternatively, it can also be understood that: the second spatial parameter is a spatial parameter for carrying the first channel, or the second spatial parameter is a spatial parameter for carrying the first signal, wherein the signal quality of the first signal is less than or equal to the first threshold.

[0229] Exemplarily, since the second reference resource set indicates the first spatial parameter group, the first spatial parameter is related to the second spatial parameter, which is equivalent to the second reference resource set being related to the second spatial parameter. That is, the implementation of determining the first spatial parameter group according to the second spatial parameter is the same as the implementation of determining the second reference resource set according to the second spatial parameter. For the convenience of description, the following only takes the implementation of determining the first spatial parameter group according to the second spatial parameter as an example for introduction; the implementation of determining the second reference resource set according to the second spatial parameter can refer to the relevant description of the implementation of determining the first spatial parameter group according to the second spatial parameter, which will not be repeated here.

[0230] Exemplarily, the first spatial parameter group is determined according to the second spatial parameter, which can also be understood as: the first spatial parameter group is associated with the second spatial parameter.

[0231] Exemplarily, since the condition for the terminal device to send the first indication information is to satisfy the first condition, and the first condition includes that the first channel HARQ feedback of the terminal device is NACK, and / or the signal quality of the first signal is less than or equal to the first threshold; combined with the concept of the above-mentioned second spatial parameter, it can be seen that the step of the network device sending the first channel or the first signal to the terminal device on the second spatial parameter is executed before the terminal device sends the first uplink indication signal. Therefore, it can also be considered that the second spatial parameter is the spatial parameter for transmitting the first channel or the first signal with the network device before the terminal device sends the first indication information.

[0232] As an implementation manner, the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold.

[0233] Exemplarily, the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold, including: the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is greater than the second threshold, or the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is equal to the second threshold.

[0234] Optionally, the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold, which can also be understood as: the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is within a second range, where the minimum value of the second range is equal to the second threshold.

[0235] Based on the above optional scheme, since the change of the beam (i.e., the spatial parameter of the first channel or the first signal) is continuous, when the beam changes, for the first channel or the first signal, the beam that has a stronger correlation with the beam before the change has better performance. Therefore, the terminal device can determine the beam that has a stronger correlation with the beam before the change as the first spatial parameter group, and report it to the network device, so that the network device can determine the first spatial parameter or the first reference signal resource set based on the first spatial parameter group. Compared with the scheme in which the network device determines the first spatial parameter or the first reference signal resource set from all the spatial parameters of the first channel or the first signal, it can save resource consumption and reduce the delay and complexity of determining the first spatial parameter or the first reference signal resource set.

[0236] As another implementation manner, the correlation between any one spatial parameter in the first spatial parameter group and the second spatial parameter is less than or equal to a second threshold.

[0237] Optionally, the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is less than or equal to a second threshold, which can also be understood as: the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter is within a third range, where the maximum value of the third range is equal to the second threshold.

[0238] As yet another implementation manner, the correlation between any spatial parameter in the first spatial parameter group and the second spatial parameter satisfies a specific threshold range.

[0239] Exemplarily, the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter satisfies being greater than or equal to an Xth threshold value and less than or equal to a Yth threshold value, including: the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter is greater than the Xth threshold value, or the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter is equal to the Xth threshold value, or the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter is less than the Yth threshold value, and the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter is equal to the Yth threshold value. Y is an integer greater than 0.

[0240] Exemplarily, the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold, and the value of the second threshold is a rational number between 0 and 1.

[0241] Exemplarily, the value of the second threshold is 0.9 or 0.8.

[0242] As yet another implementation manner, a difference between an index of any spatial parameter in the first spatial parameter group and an index of the second spatial parameter is less than or equal to a third threshold.

[0243] Exemplarily, the difference between the index of any spatial parameter in the first spatial parameter group and the index of the second spatial parameter is less than or equal to a third threshold, including: the difference between the index of any spatial parameter in the first spatial parameter group and the index of the second spatial parameter is less than the third threshold, or the difference between the index of any spatial parameter in the first spatial parameter group and the index of the second spatial parameter is equal to the third threshold.

[0244] Optionally, the difference between the index of any spatial parameter in the first spatial parameter group and the index of the second spatial parameter is less than or equal to a third threshold, which can also be understood as: the difference between the index of any spatial parameter in the first spatial parameter group and the index of the second spatial parameter is within a fourth range, where the maximum value of the fourth range is equal to the third threshold.

[0245] Exemplarily, the correlation between any one of the spatial parameters in the first spatial parameter group and the second spatial parameter is greater than or equal to a third threshold, and the value of the third threshold is a rational number between 0 and 1.

[0246] Exemplarily, the value of the third threshold is smaller than the value of the second threshold.

[0247] Exemplarily, the value of the third threshold is 0.6 or 0.5.

[0248] Based on the above optional scheme, since there is continuity in the change of the beam (i.e., the spatial parameter of the first channel or the first signal), when the beam changes, for the first channel or the first signal, the beam near the beam before the change (i.e., the spatial parameter whose difference with the index of the second spatial parameter is less than or equal to the third threshold) has better performance. Therefore, the terminal device can determine the beam near the beam before the change as the first spatial parameter group and report it to the network device, so that the network device can determine the first spatial parameter or the first reference signal resource set based on the first spatial parameter group. Compared with the scheme in which the network device determines the first spatial parameter or the first reference signal resource set from all the spatial parameters of the first channel or the first signal, it can save resource consumption and reduce the delay and complexity of determining the first spatial parameter or the first reference signal resource set.

[0249] Optionally, the first indication information corresponds to a first index, and the first index is the same as the index of the control resource set group CORESET pool corresponding to the second spatial parameter.

[0250] Exemplarily, the first index is the same as the index of the control resource set group CORESET pool corresponding to the second spatial parameter, which can also be understood as: the first index is used to indicate the CORESET pool corresponding to the second spatial parameter. Optionally, the first index corresponding to the first indication information is the control resource set group index corresponding to the first indication information.

[0251] Exemplarily, the CORESET pool corresponding to the second spatial parameter can be understood as: the CORESET pool corresponding to the DCI scheduled by the PDCCH (ie, the DCI indicating the second spatial parameter, such as the second indication information). That is, the first index and the index of the control resource set group CORESET pool corresponding to the second indication information are the same.

[0252] Based on this optional solution, since the CORESET pool is configured by the network device for the terminal device, different network devices are different, that is, the network device configuring the CORESET pool can be determined according to the index of the CORESET pool. Therefore, it can also be considered that the first index is used to indicate the network device configuring the CORESET pool. Therefore, in the multi-TRP transmission mode, after the terminal device sends the first indication information to multiple network devices, the multiple network devices can know the network device that responds to the first indication information through the first index.

[0253] For step S602:

[0254] Exemplarily, based on the first request message, the second indication information may include the following two possible implementation forms:

[0255] In a possible implementation, when the first indication information is used to request switching of a spatial parameter of a first channel or a first signal, the second indication information is used to indicate a first spatial parameter, and the first spatial parameter is used to transmit the first channel or the first signal.

[0256] Exemplarily, the second indication information may be carried in any one of RRC signaling, MAC-CE signaling, and DCI.

[0257] Exemplarily, in this possible implementation, the network device may determine the first space parameter based on the following two methods:

[0258] Method 1: When the first indication information indicates the first spatial parameter group or the second reference signal resource set, the network device may use one of the one or more spatial parameters indicated by the first spatial parameter group or included in the second reference signal resource set as the first spatial parameter.

[0259] Method 2: When the first indication information does not indicate the first spatial parameter group or the second reference signal resource set, the network device may use one of the one or more spatial parameters indicated by the predefined spatial parameter group or the predefined reference signal resource set as the first spatial parameter.

[0260] Optionally, the predefined space parameter group or the predefined reference signal resource set is predefined, or may also be predefined by a network device.

[0261] Exemplarily, based on the above two methods, the network device can determine any one of the one or more spatial parameters indicated by the spatial parameter group (i.e., the first spatial parameter group or the predefined spatial parameter group) or the reference signal resource set (i.e., the second reference signal resource set or the predefined reference signal resource set) as the first spatial parameter.

[0262] Alternatively, the network device may determine, as the first spatial parameter, a spatial parameter with the best performance (such as the smallest difference between the index and the index of the second spatial parameter, or the strongest correlation with the second spatial parameter) among one or more spatial parameters represented by the spatial parameter group or the reference signal resource set.

[0263] Exemplarily, the first spatial parameter group includes K TCI state index values

[0264] Exemplarily, if the TCI state index value corresponding to the spatial parameter of the first channel or the first signal is Q, the K value among the K TCI state index values ​​included in the first spatial parameter group is 8, and the K TCIstate indexes included in the first spatial parameter group correspond to {K-4, K-3, K-2, K-1, K+1, K+2, K+3, K+4} 8 TCI state indexes. It should be noted that the number of values ​​and index numbers of the first spatial parameter group here is only used as a possible example, and the present invention does not exclude other K values ​​and methods for determining K TCI state indexes.

[0265] Optionally, since the first indication information and NACK are carried in the same UCI, or the first indication information is NACK, indicating that the channel quality of the PDSCH corresponding to the NACK is poor and the spatial parameters need to be updated, the terminal device requests the network device to measure, switch, or recover the spatial parameters of the PDSCH corresponding to the NACK by sending the first indication information. At this time, the first spatial parameter determined by the network device is the spatial parameter updated for the PDSCH corresponding to the NACK. That is, the first spatial parameter is used for the transmission of the PDSCH corresponding to the NACK.

[0266] Exemplarily, the PDSCH corresponding to NACK can be understood as: the PDSCH that triggers the terminal device to send NACK; or, it can also be understood as: the PDSCH used by the terminal device to determine NACK.

[0267] Optionally, since the first indication information and the SR are carried in the same UCI, or the first indication information is SR, it indicates that the terminal device has a need to send PUSCH, and the network device needs to allocate spatial parameters for sending PUSCH to it. Therefore, the terminal device requests the network device to measure or switch the spatial parameters corresponding to the SR (i.e., the spatial parameters of PUSCH) by sending the first indication information. At this time, the first spatial parameter determined by the network device is the spatial parameter for sending PUSCH. That is, the first spatial parameter is used for the transmission of PUSCH corresponding to SR.

[0268] Optionally, the first spatial parameter may also be used for transmission of other channels or channels except the first channel or the first signal.

[0269] As an example, Figure 7 As shown, the communication method further includes step S603:

[0270] S603: The terminal device sends at least one of PUSCH, PUCCH or uplink reference signal to the network device, and correspondingly, the network device receives at least one of PUSCH, PUCCH or uplink reference signal from the terminal device, wherein at least one of PUSCH, PUCCH or uplink reference signal is related to the first spatial parameter.

[0271] Exemplarily, at least one of PUSCH, PUCCH or uplink reference signal is related to the first spatial parameter, including: at least one of PUSCH, PUCCH or uplink reference signal is carried on the first spatial parameter, that is, the terminal device sends at least one of PUSCH, PUCCH or uplink reference signal through the first spatial parameter.

[0272] Exemplarily, when the first indication information and NACK are carried in the same UCI, or the first indication information is NACK, the first spatial parameter can be used for the transmission of at least one of PUSCH, PUCCH or uplink reference signal (such as SRS) in addition to the transmission of PDSCH corresponding to NACK.

[0273] Similarly, when the first indication information and SR are carried in the same UCI, or the first indication information is SR, the first spatial parameter can be used for the transmission of at least one of PUSCH, PUCCH or uplink reference signal (such as SRS) in addition to the transmission of PUSCH corresponding to SR.

[0274] As another example, Figure 7 As shown, the communication method further includes step S604:

[0275] S604: The network device sends at least one of PDSCH, PDCCH or downlink reference signal to the terminal device, and correspondingly, the terminal device receives at least one of PDSCH, PDCCH or downlink reference signal from the network device, wherein at least one of PDSCH, PDCCH or downlink reference signal is related to the first spatial parameter.

[0276] Exemplarily, at least one of PDSCH, PDCCH or downlink reference signal is related to the first spatial parameter, including: at least one of PDSCH, PDCCH or downlink reference signal is carried on the first spatial parameter, that is, the network device sends at least one of PDSCH, PDCCH or downlink reference signal through the first spatial parameter.

[0277] Exemplarily, when the first indication information and NACK are carried in the same UCI, or the first indication information is NACK, the first spatial parameter can be used for the transmission of at least one of PDSCH, PDCCH or downlink reference signal (such as CSI-RS) in addition to the transmission of PDSCH corresponding to NACK.

[0278] Similarly, when the first indication information and SR are carried in the same UCI, or the first indication information is SR, the first spatial parameter can be used for the transmission of at least one of PDSCH, PDCCH or downlink reference signal (such as CSI-RS) in addition to the transmission of PUSCH corresponding to SR.

[0279] In another possible implementation, the first request message is used to request measurement of a spatial parameter of a first channel or a first signal, or, when the first indication information is used to request recovery of a spatial parameter of a first channel or a first signal, the second indication information is used to indicate a first reference signal resource set, wherein the first reference signal resource set includes at least one reference signal resource corresponding to a spatial parameter.

[0280] Exemplarily, at least one reference signal resource respectively corresponds to a spatial parameter, which can be understood as: each reference signal resource in the at least one reference signal resource respectively indicates a spatial parameter.

[0281] Exemplarily, the second indication information may be carried in RRC signaling or MAC-CE signaling.

[0282] Optionally, in this possible implementation, after step S602, as Figure 8 As shown, the communication method may further include step S605:

[0283] S605. The network device sends third indication information to the terminal device, and correspondingly, the terminal device receives the third indication information from the network device. The third indication information is used to indicate a third spatial parameter. The first reference signal resource set includes the third spatial parameter.

[0284] Exemplarily, the implementation of determining the third spatial parameter from the first reference signal resource set is similar to the above-mentioned implementation of determining the first spatial parameter from the second reference signal resource set or the first spatial parameter group. For details, please refer to the above-mentioned implementation of determining the first spatial parameter from the second reference signal resource set or the first spatial parameter group, which will not be repeated here.

[0285] Exemplarily, the third indication information may be carried in any one of RRC signaling, MAC-CE signaling or DCI.

[0286] Optionally, the network device determines the first reference signal resource set by measuring spatial parameters (ie, beam measurement).

[0287] As a possible implementation, the network device may measure all spatial parameters of the first channel or the first signal, select one or more spatial parameters with better selectivity, and then determine the first reference signal resource set.

[0288] Optionally, in this possible implementation, the first indication information indicates the first spatial parameter group or the second reference signal resource set (for the convenience of description, the first spatial parameter group or the second reference signal resource set is referred to as the uplink parameter group below), or the first indication information does not indicate the uplink parameter group. That is, regardless of whether the first indication information indicates the uplink parameter group, the network device measures all spatial parameters of the first channel or the first signal.

[0289] Exemplarily, the relationship between the first reference signal resource set and the uplink parameter group may include: the spatial parameters indicated by the first reference signal resource set include the spatial parameters indicated by the uplink parameter group; or, the spatial parameters indicated by the uplink parameter group include the spatial parameters indicated by the first reference signal resource set; or the spatial parameters indicated by the first reference signal resource set are the same as the spatial parameters indicated by the uplink parameter group; or, the spatial parameters indicated by some reference signal resources in the first reference signal resource set are the same as the spatial parameters indicated by some parameters in the uplink parameter group.

[0290] As another possible implementation, the network device may measure one or more spatial parameters indicated by the uplink parameter group, select one or more spatial parameters with better selectivity, and then determine the first reference signal resource set.

[0291] Exemplarily, this possible implementation is based on the first indication information indicating the uplink parameter group implementation, that is, when the first indication information indicates the uplink parameter group, the network device can measure one or more spatial parameters indicated by the uplink parameter group, select one or more spatial parameters with better selectivity, and then determine the first reference signal resource set.

[0292] Exemplarily, the relationship between the first reference signal resource set and the uplink parameter group may include: the spatial parameters indicated by the uplink parameter group include the spatial parameters indicated by the first reference signal resource set; or, the spatial parameters indicated by the first reference signal resource set are the same as the spatial parameters indicated by some parameters in the uplink parameter group.

[0293] Based on the above possible implementation, the network device can measure the first spatial parameter group or the second reference signal resource set indicated by the first indication information, so as to determine the first reference signal resource set. Compared with the scheme in which the network device determines the first reference signal resource set from all the spatial parameters of the first channel or the first signal, it can save resource consumption and reduce the delay and complexity of determining the first reference signal resource set.

[0294] As another possible implementation, the network device may measure a predefined spatial parameter group or a predefined reference signal resource set (for the convenience of description, the predefined spatial parameter group or the predefined reference signal resource set will be referred to as the predefined parameter group below), select one or more spatial parameters with better selectivity, and then determine the first reference signal resource set.

[0295] Exemplarily, this possible implementation is based on a predefined parameter group predefined by the protocol or the network device, that is, when the predefined parameter group is predefined by the protocol or the network device, the network device can measure one or more spatial parameters indicated by the predefined parameter group, select one or more spatial parameters with better selectivity, and then determine the first reference signal resource set.

[0296] Exemplarily, the relationship between the first reference signal resource set and the predefined parameter group may include: the spatial parameters indicated by the predefined parameter group include the spatial parameters indicated by the first reference signal resource set; or, the spatial parameters indicated by the first reference signal resource set are the same as the spatial parameters indicated by some parameters in the predefined parameter group.

[0297] Based on the above possible implementation, the network device can measure a predefined spatial parameter group or a predefined reference signal resource set to determine the first reference signal resource set. Compared with the solution in which the network device determines the first reference signal resource set from all the spatial parameters of the first channel or the first signal, it can save resource consumption and reduce the delay and complexity of determining the first reference signal resource set.

[0298] Optionally, when the first indication information is used to request recovery of the spatial parameters of the first channel or the first signal, a default spatial parameter can be configured for the terminal device before determining the first reference signal resource set, and after determining the third spatial parameter, the default spatial parameter can be switched to the third spatial parameter.

[0299] Based on the above optional scheme, when the first indication information is used to request the recovery of the spatial parameters of the first channel or the first signal, it indicates that the transmission of the first signal or the first channel between the terminal device and the network device has been affected, and the beam measurement process still requires a long time. Therefore, the network device can configure a default spatial parameter for the terminal device, so that the terminal device and the network device transmit the first channel or the first signal on the default spatial parameter, thereby reducing the transmission loss of the first channel or the first signal.

[0300] It can be understood that in each of the above embodiments, the methods and / or steps implemented by the terminal device or network device can also be implemented by components that can be used in any of the terminal devices or network devices (such as a processor, chip, chip system, circuit, logic module, or software such as a chip or circuit).

[0301] The above mainly introduces the solutions provided by the present application. Correspondingly, the present application also provides a communication device, which is used to implement the above various methods.

[0302] The communication device may be the terminal device or network device mentioned above in the method embodiment mentioned above, or a device including a terminal device or a network device, or a component that can be used for any of the terminal devices or network devices mentioned above, such as a chip or a chip system.

[0303] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0304] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0305] Fig. 9The schematic diagram of the structure of a communication device 90 is shown. The communication device 90 includes a processing module 901 and a transceiver module 902. The communication device 90 can be used to implement the functions of the above terminal equipment.

[0306] In some embodiments, the communication device 90 may further include a storage module ( Fig. 9 ), for storing program instructions and data.

[0307] In some embodiments, the transceiver module 902, which may also be referred to as a transceiver unit, is used to implement the sending and / or receiving functions. The transceiver module 902 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0308] In some embodiments, the transceiver module 902 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the above-mentioned terminal device in the above-mentioned method embodiment, and / or used to support other processes of the technology described in this document; the processing module 901 may be used to execute the processing steps (such as determination, generation, etc.) performed by the above-mentioned terminal device in the above-mentioned method embodiment, and / or used to support other processes of the technology described in this document.

[0309] When the communication device 90 is used to implement the functions of the above terminal device:

[0310] In some embodiments, the transceiver module 902 is used to send first indication information, wherein the first indication information is used to request measurement of spatial parameters of a first channel or a first signal, the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, the first indication information is used to request switching of the spatial parameters of the first channel or the first signal, or, the first indication information is used to request recovery of the spatial parameters of the first channel or the first signal; the transceiver module 902 is also used to receive second indication information, the second indication information is used to indicate the first spatial parameter, and the first spatial parameter is used to transmit the first channel or the first signal; or, the second indication information is used to indicate a first reference signal resource set, and the first reference signal resource set includes at least one spatial parameter corresponding to each of the at least one reference signal resources.

[0311] Optionally, the processing module 901 is used to determine whether a first condition is met, wherein the first condition includes one or more of the following: the first channel hybrid automatic repeat request HARQ feedback of the terminal device is NACK, and the signal quality of the first signal is less than or equal to a first threshold; the transceiver module 902 is also used to send a first indication information.

[0312] Optionally, the transceiver module 902 is further used to send at least one of a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH or an uplink reference signal, and at least one of the PUSCH, PUCCH or the uplink reference signal is related to the first spatial parameter.

[0313] Optionally, the transceiver module 902 is further used to receive at least one of a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH or a downlink reference signal, and at least one of the PDSCH, PDCCH or the downlink reference signal is related to the first spatial parameter.

[0314] When the communication device 90 is used to implement the functions of the above network device:

[0315] In some embodiments, the transceiver module 902 is used to receive first indication information, wherein the first indication information is used to request measurement of a spatial parameter of a first channel or a first signal, the first channel is a physical channel between the terminal device and the network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, the first indication information is used to request switching of the spatial parameter of the first channel or the first signal, or, the first indication information is used to request recovery of the spatial parameter of the first channel or the first signal; the transceiver module 902 is also used to send second indication information according to the first indication information, the second indication information is used to indicate a first reference signal resource set, and the first reference signal resource set includes at least one reference signal resource corresponding to a spatial parameter

[0316] Optionally, the transceiver module 902 is further used to receive at least one of a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH or an uplink reference signal, and at least one of the PUSCH, PUCCH or the uplink reference signal is related to the first spatial parameter.

[0317] Optionally, the transceiver module 902 is further used to send at least one of a physical downlink shared channel PDSCH, a physical downlink control channel PDCCH or a downlink reference signal, and at least one of the PDSCH, PDCCH or the downlink reference signal is related to the first spatial parameter.

[0318] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0319] In the present application, the communication device 90 may be presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0320] In some embodiments, when Fig. 9 When the communication device 90 is a chip or a chip system, the function / implementation process of the transceiver module 902 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function / implementation process of the processing module 901 can be implemented through the processor (or processing circuit) of the chip or the chip system.

[0321] Since the communication device 90 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0322] As a possible product form, the terminal device or network device described in the embodiments of the present application can also be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.

[0323] As another possible product form, the terminal device or network device of the embodiment of the present application can be implemented by a general bus architecture. Fig.10 , Fig.10 1 is a schematic diagram of the structure of a communication device 1000 provided in an embodiment of the present application, wherein the communication device 1000 includes a processor 1001 and a transceiver 1002. The communication device 1000 may be a terminal device or a network device, or a chip or chip system therein. Fig.10 Only the main components of the communication device 1000 are shown. In addition to the processor 1001 and the transceiver 1002, the communication device may further include a memory 1003 and an input and output device (not shown in the figure).

[0324] Optionally, the processor 1001 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program. The memory 1003 is mainly used to store the software program and data. The transceiver 1002 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input and output devices, such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.

[0325] Optionally, the processor 1001, the transceiver 1002, and the memory 1003 may be connected via a communication bus.

[0326] When the communication device is turned on, the processor 1001 can read the software program in the memory 1003, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1001 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1001. The processor 1001 converts the baseband signal into data and processes the data.

[0327] In another implementation, the RF circuit and antenna may be arranged independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged remotely from the communication device.

[0328] In some embodiments, in terms of hardware implementation, those skilled in the art may imagine that the communication device 90 may be implemented as Fig.10 The communication device 1000 is shown in FIG.

[0329] As an example, Fig. 9 The function / implementation process of the processing module 901 in Fig.10 The processor 1001 in the communication device 1000 shown calls the computer execution instructions stored in the memory 1003 to implement. Fig. 9 The function / implementation process of the transceiver module 902 can be Fig.10 The transceiver 1002 in the communication device 1000 is shown to be implemented.

[0330] As another possible product form, the terminal device or network device in this application can adopt Fig. 9 The structure shown, or including Fig.11Parts shown. Fig.11 A schematic diagram of the composition of a communication device 1100 provided in the present application, wherein the communication device 1100 may be a terminal device or a network device, or a chip or a system on chip in the terminal device or the network device.

[0331] like Fig.11 As shown, the communication device 1100 includes at least one processor 1101 and at least one communication interface ( Fig.11 The communication device 1100 is merely illustrative and is described by taking a communication interface 1104 and a processor 1101 as an example. Optionally, the communication device 1100 may further include a communication bus 1102 and a memory 1103.

[0332] The processor 1101 may be a general-purpose central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 1101 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0333] The communication bus 1102 is used to connect different components in the communication device 1100 so that the different components can communicate. The communication bus 1102 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.11 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.

[0334] The communication interface 1104 is used to communicate with other devices or communication networks. Exemplarily, the communication interface 1104 can be a module, a circuit, a transceiver, or any device capable of implementing communication. Optionally, the communication interface 1104 can also be an input / output interface located in the processor 1101 to implement signal input and signal output of the processor.

[0335] The memory 1103 may be a device with a storage function, used to store instructions and / or data, wherein the instructions may be computer programs.

[0336] Exemplarily, the memory 1103 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0337] It should be noted that the memory 1103 may exist independently of the processor 1101 or may be integrated with the processor 1101. The memory 1103 may be located inside the communication device 1100 or outside the communication device 1100, without limitation. The processor 1101 may be used to execute instructions stored in the memory 1103 to implement the methods provided in the following embodiments of the present application.

[0338] As an optional implementation, the communication device 1100 may also include an output device 1105 and an input device 1106. The output device 1105 communicates with the processor 1101 and can display information in a variety of ways. For example, the output device 1105 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 1106 communicates with the processor 1101 and can receive user input in a variety of ways. For example, the input device 1106 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0339] In some embodiments, in terms of hardware implementation, those skilled in the art may imagine that the communication device 90 may be implemented as Fig.11 The form of the communication device 1100 is shown.

[0340] As an example, Fig. 9 The function / implementation process of the processing module 901 in Fig.11 The processor 1101 in the communication device 1100 shown calls the computer execution instructions stored in the memory 1103 to implement. Fig. 9The function / implementation process of the transceiver module 902 can be Fig.11 The communication interface 1104 in the communication device 1100 is implemented.

[0341] It should be noted that Fig.11 The structure shown does not constitute a specific limitation on the terminal device or network device. For example, in other embodiments of the present application, the terminal device or network device may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0342] In some embodiments, an embodiment of the present application further provides a communication device, which includes a processor for implementing a method in any of the above method embodiments.

[0343] As a possible implementation, the communication device further includes a memory. The memory is used to store necessary computer programs and data. The computer program may include instructions, and the processor may call the instructions in the computer program stored in the memory to instruct the communication device to execute the method in any of the above method embodiments. Of course, the memory may not be in the communication device.

[0344] As another possible implementation, the communication device also includes an interface circuit, which is a code / data read / write interface circuit, which is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.

[0345] As another possible implementation manner, the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.

[0346] It can be understood that the communication device can be a chip or a chip system. When the communication device is a chip system, it can be composed of chips, or it can include chips and other discrete devices. The embodiments of the present application do not specifically limit this.

[0347] The present application also provides a computer-readable storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed by a computer, the functions of any of the above method embodiments are implemented.

[0348] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0349] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0350] It is understood that the systems, devices and methods described in the present application can also be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0351] The units described as separate components may or may not be physically separated, i.e., they may be located in one place, or they may be distributed over multiple network units. The components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0352] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0353] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with the medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)), etc. In the embodiment of the present application, the computer may include the aforementioned device.

[0354] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0355] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The method comprises: Sending first indication information, wherein: The first indication information is used to request measurement of a spatial parameter of a first channel or a first signal, where the first channel is a physical channel between a terminal device and a network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, The first indication information is used to request switching of the spatial parameters of the first channel or the first signal, or, The first indication information is used to request recovery of the spatial parameters of the first channel or the first signal; Receive second indication information, where the second indication information is used to indicate a first spatial parameter, where the first spatial parameter is used to transmit the first channel or the first signal; or, the second indication information is used to indicate a first reference signal resource set, where the first reference signal resource set includes at least one reference signal resource that corresponds to a spatial parameter respectively.

2. The method according to claim 1, characterized in that: The sending of the first indication information includes: Determine that a first condition is met, wherein the first condition includes one or more of the following: a first channel hybrid automatic repeat request HARQ feedback of the terminal device is negative NACK, and a signal quality of the first signal is less than or equal to a first threshold; Send the first indication information.

3. The method according to claim 2, characterized in that The first spatial parameter is used for transmission of a physical downlink shared channel PDSCH corresponding to NACK.

4. The method according to claim 1, characterized in that: The sending of the first indication information includes: If there is an uplink scheduling request SR, the first indication information is sent.

5. The method according to claim 4, characterized in that The first spatial parameter is used for transmission of a physical uplink shared channel PUSCH corresponding to the SR.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: At least one of a PUSCH, a physical uplink control channel PUCCH, or an uplink reference signal is sent, and at least one of the PUSCH, the PUCCH, or the uplink reference signal is related to the first spatial parameter.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: At least one of a PDSCH, a PDCCH, or a downlink reference signal is received, wherein at least one of the PDSCH, the PDCCH, or the downlink reference signal is related to the first spatial parameter.

8. The method according to any one of claims 1 to 7, characterized in that: The first indication information is located in the first field of the uplink control information UCI, wherein: The first field is used to indicate a spatial parameter for measuring the first channel or the first signal; or, The first field is used to indicate a spatial parameter for switching the first channel or the first signal; or, The first field is used to indicate the spatial parameter for recovering the first channel or the first signal.

9. The method according to any one of claims 1 to 8, characterized in that: The first indication information is further used to indicate a first spatial parameter group, and the first spatial parameter group includes the first spatial parameter.

10. The method according to claim 9, characterized in that The first indication information is used to indicate a second reference signal resource set, and the one or more reference signal resources included in the second reference signal resource set correspond to one or more space parameters in the first space parameter group respectively.

11. The method according to claim 9 or 10, characterized in that: The first spatial parameter group is related to a second spatial parameter, where the second spatial parameter is a spatial parameter of the first channel, or the second spatial parameter is a spatial parameter of the first signal, and a signal quality of the first signal is less than or equal to a first threshold.

12. The method according to claim 11, characterized in that A correlation between any one spatial parameter in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold.

13. The method according to claim 11 or 12, characterized in that: A difference between an index of any one spatial parameter in the first spatial parameter group and an index of the second spatial parameter is less than or equal to a third threshold.

14. The method according to any one of claims 1 to 13, characterized in that: The first indication information corresponds to a first index, and the first index is the same as the index of the control resource set group CORESET pool corresponding to the second indication information.

15. A communication method, characterized in that: The method comprises: Receive first indication information, wherein: The first indication information is used to request measurement of a spatial parameter of a first channel or a first signal, where the first channel is a physical channel between a terminal device and a network device, and the first signal is a reference signal transmitted between the terminal device and the network device; or, The first indication information is used to request switching of the spatial parameters of the first channel or the first signal, or, The first indication information is used to request recovery of the spatial parameters of the first channel or the first signal; According to the first indication information, second indication information is sent, where the second indication information is used to indicate a first reference signal resource set, wherein at least one reference signal resource included in the first reference signal resource set respectively corresponds to a spatial parameter.

16. The method according to claim 15, characterized in that The first spatial parameter is used to deny transmission of a physical downlink shared channel PDSCH corresponding to NACK.

17. The method according to claim 15, characterized in that The first spatial parameter is used for transmission of a physical uplink shared channel PUSCH corresponding to a scheduling request SR.

18. The method according to any one of claims 15 to 17, characterized in that: The method further comprises: At least one of a PUSCH, a physical uplink control channel PUCCH, or an uplink reference signal is received, and at least one of the PUSCH, the PUCCH, or the uplink reference signal is related to the first spatial parameter.

19. The method according to any one of claims 15 to 18, characterized in that: The method further comprises: At least one of a PDSCH, a PDCCH, or a downlink reference signal is sent, and at least one of the PDSCH, the PDCCH, or the downlink reference signal is related to the first spatial parameter.

20. The method according to any one of claims 15 to 19, characterized in that: The first indication information is located in the first field of the first uplink control information UCI, wherein: The first field is used to request measurement of a spatial parameter of the first channel or the first signal; or, The first field is used to request switching of the spatial parameters of the first channel or the first signal; or, The first field is used to request recovery of the spatial parameters of the first channel or the first signal.

21. The method according to any one of claims 15 to 20, characterized in that: The first indication information is further used to indicate a first spatial parameter group, and the first spatial parameter group includes the first spatial parameter.

22. The method according to claim 21, characterized in that The first indication information is used to indicate a second reference signal resource set, and the second reference signal resource set includes at least one reference signal resource corresponding to each of them.

23. The method according to claim 21 or 22, characterized in that The first spatial parameter group is related to a second spatial parameter, where the second spatial parameter is a spatial parameter of the first channel, or the second spatial parameter is a spatial parameter of the first signal, and the signal quality of the first signal is less than or equal to a spatial parameter of a first threshold.

24. The method according to claim 23, characterized in that A correlation between any one spatial parameter in the first spatial parameter group and the second spatial parameter is greater than or equal to a second threshold.

25. The method according to claim 23 or 24, characterized in that A difference between an index of any one spatial parameter in the first spatial parameter group and an index of the second spatial parameter is less than or equal to a third threshold.

26. The method according to any one of claims 15 to 25, characterized in that: The first indication information corresponds to a first index, and the first index is the same as the index of the control resource set group CORESET pool corresponding to the second indication information.

27. A communication device, characterized in that: The communication device includes a transceiver module and a processing module. The transceiver module is used to perform the receiving behavior or the sending behavior in the method according to any one of claims 1 to 14, or to perform the receiving behavior or the sending behavior in the method according to any one of claims 15 to 26; The processing module is used to execute the processing behavior in the method according to any one of claims 1-14, or to execute the processing behavior in the method according to any one of claims 15-26.

28. A communication device, characterized in that: The communication device comprises a processor; the processor is configured to run a computer program or instruction so that the communication device executes the method according to any one of claims 1 to 14, or so that the communication device executes the method according to any one of claims 15 to 26.

29. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions or programs. When the computer instructions or programs are executed on a computer, the method according to any one of claims 1 to 14 is executed, or the method according to any one of claims 15 to 26 is executed.

30. A computer program product, characterized in that When the computer program product is executed on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 14, or the communication device is caused to execute the method according to any one of claims 15 to 26.

31. A chip, characterized in that: include: A processor, wherein the processor is coupled to a memory, wherein the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the chip executes the method as described in any one of claims 1-14, or the chip executes the method as described in any one of claims 15-26.

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