Wireless communication method and communication device

Abstract

The present application provides a wireless network communication method and a communication device. The wireless network communication method includes: a first communication device determines first quasi - co - location (QCL) information of a target signal; when the first QCL information becomes invalid, the first communication device receives the target signal according to second QCL information. In the above technical solution, when the first QCL information of the target signal becomes invalid, the first communication device can receive the target signal according to the second QCL information, so that when the first QCL information becomes invalid, that is, when some beams are turned off on the second communication device side, the QCL information and the receiving behavior for the first communication device to receive the target signal can be re - determined, thereby ensuring the accuracy of receiving the target signal.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly, to a wireless network communication method and a communication device. Background Art

[0002] With the development of communication technologies, network devices and terminal devices in a communication system such as the fifth generation (5G) mobile communication system can perform signal transmission based on beamforming technology, thereby overcoming the large propagation losses generated during signal transmission.

[0003] A plurality of beam pairs (transmitting beams and receiving beams) are determined between the network device and the terminal device for signal or channel transmission. To save the beam scanning time of the terminal device to achieve a power saving effect, generally, the network device can send quasi-co-location (QCL) information to the terminal device, and the terminal device can determine the information of the receiving beam for receiving the current signal or channel according to the QCL information.

[0004] To save power consumption, the network device side can only turn on the beams required by the served terminal and turn off other unnecessary beams. Since the terminal device still needs to receive signals with reference to the previously configured QCL information, and one QCL corresponds to one beam, when the beam corresponding to the configured QCL information is turned off, the terminal device may not be able to correctly receive the current signal or channel, resulting in poor accuracy of signal reception. Summary of the Invention

[0005] This application provides a wireless network communication method and a communication device, which can improve the accuracy of signal reception.

[0006] In a first aspect, a wireless network communication method is provided, including: a first communication device determines first quasi-co-location (QCL) information of a target signal; when the first QCL information fails, the first communication device receives the target signal according to second QCL information.

[0007] In the technical solution provided by the embodiments of this application, when the first QCL information of the target signal fails, the first communication device can receive the target signal according to the second QCL information. Thus, when the first QCL information configured by the second communication device for the first communication device fails, that is, when the second communication device side turns off some beams, such as the beam corresponding to the reference signal resource index in the first QCL information or the beam used to send the target signal, the QCL information and receiving behavior for the first communication device to receive the target signal can be re-determined, thereby ensuring the accuracy of target signal reception.

[0008] The first communication device in the embodiments of the present application may be a terminal device or a chip device, such as a chip device configured in a terminal device.

[0009] The second communication device in the embodiments of the present application may be a network device or a chip device, such as a chip device configured in a network device.

[0010] Taking the first communication device as a terminal device and the second communication device as a network device as an example, it should be understood that the failure of the first QCL information can be understood as that the terminal device cannot accurately receive the target signal according to the first QCL information. The reason for the failure of the first QCL information (that is, the terminal device cannot accurately receive the target signal according to the first QCL information) is that the filtering parameter of the receiving beam in the transceiver beam pair corresponding to the reference signal resource index used by the terminal device when receiving the target signal has poor referenceability. In the embodiments of the present application, the reason for the failure of the first QCL information is that the network device side turns off some beams. For example, the network device turns off the transmitting beam in the transceiver beam pair corresponding to the reference signal resource index in the first QCL information, so that the filtering parameter of the receiving beam corresponding to the reference signal resource index no longer has reference value or has poor referenceability. Another example is that the network device turns off the beam used to transmit the target signal indicated by the first QCL information, that is, the network device does not use the beam used to transmit the target signal indicated by the first QCL information to transmit the target signal, while the terminal device still receives the target signal according to the beam used to transmit the target signal indicated in the first QCL information, resulting in the terminal device being unable to correctly receive the target signal.

[0011] It should be noted that in the embodiments of the present application, the "beam" may also be referred to as the "reference signal resource", and correspondingly, the "beam index" may be referred to as the "reference signal resource index".

[0012] It should also be noted that in the embodiments of the present application, the QCL information may also be expressed as "beam information".

[0013] Combined with the first aspect, in a possible implementation manner, the second QCL information is predefined.

[0014] Combined with the first aspect, in a possible implementation manner, the target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: the index of the first synchronization signal block SSB received by the first communication device; or, the reference signal resource index in the first measurement result of the first communication device.

[0015] Taking the first communication device as the terminal device and the second communication device as the network device as an example, the index of the first synchronization signal block (SSB) corresponds to the filtering parameter when the terminal device measures based on this first SSB. The SSB is the basic signal for the terminal device to access the cell. Therefore, the beam scanning of the SSB is usually not easily turned off. When the beam of the network device is suddenly turned off, the terminal device can refer to the reception filtering parameter corresponding to the previous index of the first SSB to receive the target signal, so as to ensure that the terminal device can correctly receive the target signal.

[0016] Combined with the first aspect, in a possible implementation manner, the target signal is a physical downlink control channel (PDCCH) or a semi-persistent scheduling channel state information reference signal, and the second QCL information includes any one of the following information: a QCL information other than the first QCL information in the candidate QCL information set configured by the second communication device for the first communication device, where the candidate QCL information set includes the first QCL information; or, the index of the first SSB received by the first communication device; or, the reference signal resource index in the first measurement result of the first communication device.

[0017] Combined with the first aspect, in a possible implementation manner, the first SSB is the SSB associated with the physical random access channel (PRACH) sent by the first communication device, or is the SSB reported by the first communication device to the second communication device.

[0018] Combined with the first aspect, in a possible implementation manner, when the first SSB is the SSB associated with the PRACH sent by the first communication device, the first SSB is the SSB associated with the most recent PRACH sent by the first communication device.

[0019] The second QCL information includes the index of the SSB associated with the most recent PRACH sent by the first communication device, such as the terminal device. The terminal device can receive the target signal according to the reception filtering parameter corresponding to the index of the SSB associated with the most recent PRACH sent by the terminal device, thereby improving the accuracy of receiving the target signal.

[0020] Combined with the first aspect, in a possible implementation manner, the first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or is the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the first communication device.

[0021] In combination with the first aspect, in a possible implementation, it further includes: when the first communication device receives the indication information sent by the second communication device, the first communication device determines that the first QCL information fails, where the indication information is used to indicate the failure of the first QCL information and / or is used to indicate the second QCL information.

[0022] Optionally, the indication information for indicating the failure of the first QCL information and the indication information for indicating the second QCL information may be carried in the same message or in different messages.

[0023] Optionally, the indication information for indicating the failure of the first QCL information and the indication information for indicating the second QCL information may be sent simultaneously or separately.

[0024] In combination with the first aspect, in a possible implementation, the indication information is carried in the downlink control information DCI.

[0025] In combination with the first aspect, in a possible implementation, the first QCL information or the second QCL information is configured in any of the following ways: radio resource control RRC signaling; or, RRC signaling and medium access control element MAC CE signaling; or, RRC signaling and downlink control information DCI signaling.

[0026] In combination with the first aspect, in a possible implementation, before the first communication device receives a signal according to the second QCL information when the first QCL information fails, it further includes: the first communication device receives the second QCL information sent by the second communication device.

[0027] When the first QCL information fails, the second communication device, such as a network device, can reconfigure the second QCL information for the first communication device, such as a terminal device, so that when the network device turns off some beams, it can ensure that the terminal device can receive the target signal according to the QCL assumption corresponding to other effective beams, thereby ensuring the accuracy of target signal reception.

[0028] In combination with the first aspect, in a possible implementation, the second QCL information is carried in the downlink control information DCI signaling or the medium access control element MAC CE signaling.

[0029] In a second aspect, a wireless network communication method is provided, including: when the first QCL information of a target signal fails, a first communication device determines second QCL information; the first communication device receives the target signal according to the second QCL information.

[0030] In the technical solution provided by the embodiments of the present application, when the first QCL information of the target signal fails, the first communication device can determine the second QCL information and receive the target signal according to the second QCL information, so that when the first QCL information configured by the second communication device for the first communication device fails, that is, when the second communication device turns off some beams, such as the beam corresponding to the reference signal resource index in the first QCL information or the beam used to send the target signal, the QCL information and receiving behavior for the first communication device to receive the target signal can be re-determined, thereby ensuring the accuracy of target signal reception.

[0031] In combination with the second aspect, in a possible implementation manner, the second QCL information is predefined.

[0032] In combination with the second aspect, in a possible implementation manner, the target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: the index of the first synchronization signal block SSB received by the first communication device; or, the reference signal resource index in the first measurement result of the first communication device.

[0033] In combination with the second aspect, in a possible implementation manner, the target signal is a physical downlink control channel PDCCH or a semi-persistent scheduling channel state information reference signal, and the second QCL information includes any one of the following information: a QCL information other than the first QCL information in the candidate QCL information set configured by the second communication device for the first communication device, where the candidate QCL information set includes the first QCL information; or, the index of the first synchronization signal block SSB received by the first communication device; or, the reference signal resource index in the first measurement result of the first communication device.

[0034] In combination with the second aspect, in a possible implementation manner, the first synchronization signal block SSB is the synchronization signal block associated with the physical random access channel PRACH sent by the first communication device, or the synchronization signal block reported by the first communication device to the second communication device.

[0035] In combination with the second aspect, in a possible implementation manner, when the first synchronization signal block SSB is the synchronization signal block associated with the physical random access channel PRACH sent by the first communication device, the first synchronization signal block SSB is the synchronization signal block associated with the physical random access channel PRACH sent by the first communication device most recently.

[0036] The second QCL information includes the index of the synchronization signal block associated with the PRACH sent by the first communication device, such as a terminal device, most recently. The terminal device can receive the target signal according to the reception filtering parameter corresponding to the index of the synchronization signal block associated with the PRACH sent by the terminal device most recently, thereby improving the accuracy of receiving the target signal.

[0037] Combined with the second aspect, in a possible implementation, the first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the first communication device.

[0038] Combined with the second aspect, in a possible implementation, it further includes: when the first communication device receives the indication information sent by the second communication device, the first communication device determines that the first QCL information fails, where the indication information is used to indicate the failure of the first QCL information and / or is used to indicate the second QCL information.

[0039] Optionally, the indication information for indicating the failure of the first QCL information and the indication information for indicating the second QCL information may be carried in the same message or in different messages.

[0040] Optionally, the indication information for indicating the failure of the first QCL information and the indication information for indicating the second QCL information may be sent simultaneously or separately.

[0041] Combined with the second aspect, in a possible implementation, the indication information is carried in the downlink control information DCI.

[0042] Combined with the second aspect, in a possible implementation, the first QCL information or the second QCL information is configured in any of the following ways: radio resource control RRC signaling; or, RRC signaling and media access control unit MAC CE signaling; or, RRC signaling and downlink control information DCI signaling.

[0043] Combined with the second aspect, in a possible implementation, before the first communication device determines the second QCL information, it further includes: the first communication device receives the second QCL information sent by the second communication device.

[0044] When the first QCL information fails, the second communication device, such as a network device, can reconfigure the second QCL information for the first communication device, such as a terminal device, so as to ensure that when the network device shuts down some beams, the terminal device can receive the target signal according to the QCL assumption corresponding to other effective beams, thereby ensuring the accuracy of receiving the target signal.

[0045] In combination with the second aspect, in a possible implementation manner, the second QCL information is carried in a downlink control information DCI signaling or a media access control unit MAC CE signaling.

[0046] In a third aspect, a wireless network communication method is provided, including: a second communication device configures first quasi co-location QCL information of a target signal for a first communication device; when the first QCL information fails, the second communication device instructs the first communication device to receive the target signal according to the second QCL information.

[0047] In the technical solution provided by the embodiments of the present application, when the first QCL information of the target signal fails, the first communication device can receive the target signal according to the second QCL information, so that when the QCL information configured by the second communication device fails, that is, when the second communication device turns off some beams, for example, the beam corresponding to the reference signal resource index in the first QCL information or the beam used to send the target signal, the QCL information and receiving behavior for the first communication device to receive the target signal can be re-determined, thereby ensuring the accuracy of target signal reception.

[0048] In combination with the third aspect, in a possible implementation manner, the second QCL information is predefined.

[0049] In combination with the third aspect, in a possible implementation manner, the target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: the index of the first synchronization signal block SSB received by the first communication device; or, the index of the reference signal in the first measurement result of the first communication device.

[0050] Taking the first communication device as a terminal device and the second communication device as a network device as an example, the index of the first synchronization signal block SSB corresponds to the filtering parameter when the terminal device measures based on the first synchronization signal block SSB. The synchronization signal block SSB is a basic signal for the terminal device to perform cell access. Therefore, the beam scanning of the synchronization signal block SSB is usually not easily turned off. When the beam of the network device is suddenly turned off, the terminal device can refer to the receiving filtering parameter corresponding to the previous first synchronization signal block index to receive the target signal, so as to ensure that the terminal device can correctly receive the target signal.

[0051] In combination with the third aspect, in a possible implementation, the target signal is a Physical Downlink Control Channel (PDCCH) or a Semi-Persistent Scheduling Channel State Information Reference Signal (SPS-CSI-RS), and the second Quasi-Co-Location (QCL) information includes any one of the following: a QCL information other than the first QCL information in the candidate QCL information set configured by the second communication device for the first communication device, where the candidate QCL information set includes the first QCL information; or, the index of the first Synchronization Signal Block (SSB) received by the first communication device; or, the index of the reference signal in the first measurement result of the first communication device.

[0052] In combination with the third aspect, in a possible implementation, the first Synchronization Signal Block (SSB) is the synchronization signal block associated with the Physical Random Access Channel (PRACH) sent by the first communication device, or is the synchronization signal block reported by the first communication device to the second communication device.

[0053] In combination with the third aspect, in a possible implementation, when the first Synchronization Signal Block (SSB) is the synchronization signal block associated with the Physical Random Access Channel (PRACH) sent by the first communication device, the first Synchronization Signal Block (SSB) is the synchronization signal block associated with the most recent Physical Random Access Channel (PRACH) sent by the first communication device.

[0054] The second QCL information includes the index of the synchronization signal block associated with the most recent PRACH sent by a first communication device, such as a terminal device. The terminal device can receive the target signal according to the reception filtering parameters corresponding to the index of the synchronization signal block associated with the most recent PRACH sent by the terminal device, thereby improving the accuracy of target signal reception.

[0055] In combination with the third aspect, in a possible implementation, the first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or is the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the first communication device.

[0056] In combination with the third aspect, in a possible implementation, the second communication device indicates the second QCL information to the first communication device, including: the second communication device sends indication information to the first communication device, and the indication information is used to indicate that the first QCL information is invalid and / or is used to indicate the second QCL information.

[0057] In combination with the third aspect, in a possible implementation, the indication information is carried in the Downlink Control Information (DCI).

[0058] In combination with the third aspect, in a possible implementation manner, the first QCL information or the second QCL information is configured by any one of the following methods: radio resource control (RRC) signaling; or, RRC signaling and media access control element (MAC CE) signaling; or, RRC signaling and downlink control information (DCI) signaling.

[0059] In combination with the third aspect, in a possible implementation manner, the second communication device indicates the second QCL information to the first communication device, including: the second communication device sends the second QCL information to the first communication device.

[0060] When the first QCL information fails, the second communication device, such as a network device, can reconfigure the second QCL information for the first communication device, such as a terminal device, so that when the network device turns off some beams, it can be ensured that the terminal device can receive the target signal according to the QCL assumption corresponding to other valid beams, thereby ensuring the accuracy of target signal reception.

[0061] In combination with the third aspect, in a possible implementation manner, the second QCL information is carried in the downlink control information (DCI) signaling or the media access control element (MAC CE) signaling.

[0062] In a fourth aspect, a communication device is provided, including modules or units corresponding one by one to the methods / operations / steps / actions described in the method of the first aspect or any possible implementation manner of the first aspect; or the device includes modules or units corresponding one by one to the methods / operations / steps / actions described in the method of the second aspect or any possible implementation manner of the second aspect, and the module or unit can be a hardware circuit, or software, or a combination of a hardware circuit and software.

[0063] Optionally, the communication device can be a terminal device or a chip device, and the chip device can be a chip device configured in the terminal device.

[0064] In a fifth aspect, a communication device is provided, including modules or units corresponding one by one to the methods / operations / steps / actions described in the method of the third aspect or any possible implementation manner of the third aspect, and the module or unit can be a hardware circuit, or software, or a combination of a hardware circuit and software.

[0065] Optionally, the communication device can be a network device or a chip device, and the chip device can be a chip device configured in the network device.

[0066] In a sixth aspect, a communication device is provided. The communication device may be the first communication device in the above method design. For example, the communication device is a terminal device or a chip disposed in a terminal device. The communication device includes: a processor coupled to a memory and configured to execute instructions in the memory to implement the method performed by the first communication device in the first aspect and any possible implementation thereof, or the method performed by the first communication device in the second aspect and any possible implementation thereof. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0067] When the communication device is a terminal device, the communication interface may be a transceiver or an input / output interface.

[0068] When the communication device is a chip disposed in a terminal device, the communication interface may be an input / output interface.

[0069] In a seventh aspect, a communication device is provided. The communication device may be the second communication device in the above method design. The second communication device is a network device or a chip disposed in a network device. The communication device includes: a processor coupled to a memory and configured to execute instructions in the memory to implement the method performed by the second communication device in the third aspect and any possible implementation thereof. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0070] When the communication device is a network device, the communication interface may be a transceiver or an input / output interface.

[0071] When the communication device is a chip disposed in a network device, the communication interface may be an input / output interface.

[0072] In an eighth aspect, a communication device is provided. The communication device includes: a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transmit and receive signals. The memory is configured to store a computer program. The processor is configured to call and run the computer program from the memory, so that the communication device executes the method in the first aspect or any possible implementation of the first aspect, or so that the communication device executes the method in the second aspect or any possible implementation of the second aspect.

[0073] In a ninth aspect, a communication device is provided. The communication device includes: a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transmit and receive signals. The memory is configured to store a computer program. The processor is configured to call and run the computer program from the memory, so that the communication device executes the method in the third aspect or any possible implementation of the third aspect.

[0074] In a tenth aspect, there is provided a computer-readable storage medium storing instructions which, when run on a computer, cause the computer to execute the method described in the first aspect or any possible implementation of the first aspect; or cause the computer to execute the method described in the second aspect or any possible implementation of the second aspect.

[0075] In an eleventh aspect, there is provided a computer-readable storage medium storing instructions which, when run on a computer, cause the computer to execute the method described in the third aspect or any possible implementation of the third aspect.

[0076] In a twelfth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to execute the method described in the first aspect or any possible implementation of the first aspect; or cause the computer to execute the method described in the second aspect or any possible implementation of the second aspect.

[0077] In a thirteenth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to execute the method described in the third aspect or any possible implementation of the third aspect.

[0078] In a fourteenth aspect, there is provided a communication system including the first communication device and the second communication device described above.

[0079] Optionally, the first communication device is a terminal device or a chip device configured in a terminal device, and the second communication device is a network device or a chip device configured in a network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 is a schematic diagram of an application scenario of an embodiment of the present application;

[0081] Figure 2 is a schematic diagram of a downlink signal transmission process;

[0082] Figure 3 is a schematic flowchart of a wireless network communication method according to an embodiment of the present application;

[0083] Figure 4 is a schematic flowchart of a wireless network communication method according to another embodiment of the present application;

[0084] Figure 5 is a schematic structural diagram of a device provided by an embodiment of the present application;

[0085] Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0086] Figure 7 It is a schematic structural diagram of a device provided by another embodiment of the present application;

[0087] Figure 8 It is a schematic structural diagram of a communication device provided by another embodiment of the present application. Specific embodiments

[0088] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0089] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System for Mobile Communications (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5th generation (5G) system or New Radio (NR) and future 6th generation communication systems, etc.

[0090] Figure 1 Shows a schematic diagram of the application scenario of the embodiments of the present application. As Figure 1 shown, the application scenario may include a network device 110 and a terminal device 120.

[0091] The network device 110 in the embodiments of the present application may be a device for communicating with the terminal device 120. For example, the network device 110 may be a base station for connecting the terminal device 120 to a radio access network (RAN). For ease of understanding, the embodiments of the present application will use the network device 110 as an example of a base station for illustration. A base station may sometimes also be referred to as an access network device or an access network node. It can be understood that in systems using different radio access technologies, the names of devices with base station functions may be different. For ease of description, the embodiments of the present application collectively refer to the devices that provide wireless communication access functions for terminal devices as base stations. For example, the network device 110 may be an evolved node B (eNB or eNodeB) in long term evolution (LTE), or a next generation node base station (gNB) in the fifth generation (5G) mobile communication system, or a radio controller in the cloud radio access network (CRAN) scenario, or a transmission and reception point (TRP). Alternatively, the network device 110 may be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc. The embodiments of the present application do not limit this. The network device 110 may be a macro base station or a micro base station. The coverage area of a network device 110 may include one cell or multiple cells.

[0092] In the embodiments of the present application, the terminal device 120 can communicate with one or more core networks (CNs) via an access network device. The terminal device 120 can also be referred to as a user equipment (UE), an access terminal, a terminal, a user unit, a user station, a mobile station, a mobile device, a remote station, a remote terminal, a mobile device, a user terminal, a wireless network device, a user agent, or a user device. The terminal device 120 can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a smart phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, or other devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a drone device, or a terminal in the Internet of Things, the Internet of Vehicles, and any form of terminal in a future network, a relay user equipment, or a terminal in a future evolved public land mobile network (PLMN). The embodiments of the present application are not limited thereto. For ease of description, in the embodiments of the present application, the terminal device 120 is taken as an example of a UE for illustration.

[0093] The network device 110 and the terminal device 120 can transmit uplink and downlink signals through the transmission link therebetween. Among them, the transmission link from the network device 110 to the terminal device 120 can be referred to as a downlink, and the transmission link from the terminal device 120 to the network device 110 can be referred to as an uplink. The network device 110 can send downlink data to the terminal device 120 through the downlink. Correspondingly, the terminal device 120 receives the downlink data sent by the network device 110 through the downlink; the terminal device 120 can send uplink data to the network device 110 through the uplink. Correspondingly, the network device 110 receives the uplink data sent by the terminal device 120 through the uplink.

[0094] The embodiments of the present application can be applied to a wireless communication system, such as a 5G system. In the application scenarios of the embodiments of the present application, the terminal device 120 can include one or more terminal devices. Exemplarily, in Figure 1 the application scenario, the terminal device 120 includes UE#1, UE#2, UE#3, UE#4, UE#5, UE#6. It should be understood, however, Figure 1The number of the shown terminal devices 120 is merely exemplary. In some other embodiments, the number of the terminal devices 120 may also be 1, 2, 4, 8 or even more. Taking Figure 1 as an example, the network device 110 and UE#1 to UE#6 may form a communication system. In this communication system, UE#1 to UE#6 may send uplink information or data to the network device 110, and the network device 110 needs to receive the uplink information or data sent by UE#1 to UE#6; the network device 110 may send downlink information or data to UE#1 to UE#6, and UE#1 to UE#6 need to receive the downlink information or data sent by the network device 110 to themselves. Additionally, some of UE#1 to UE#6 may form another communication system. For example, UE#4 to UE#6 may form a communication system. In the entire communication system, the network device 110 may send downlink information or data to UE#1, UE#2, UE#3, UE#5, etc., and UE#5 may also send downlink information or data to UE#4, UE#6, etc.; correspondingly, UE#4, UE#6 may send uplink information or data to UE#5, and UE#1, UE#2, UE#3, UE#5, etc. may also send uplink information or data to the network device 110.

[0095] During the transmission of the uplink and downlink signals between the network device 110 and the terminal device 120 in the space propagation process, the quality of the wireless signal will attenuate. This attenuation phenomenon is called "path-loss". Path-loss will have a huge impact on the communication system. Especially for a communication system in the millimeter wave band (mmWave) (such as a 5G communication system), the excessive signal attenuation caused by the high path-loss characteristic of the millimeter wave may cause the system to fail to work properly. In order to overcome the large propagation loss generated during the signal transmission process, a signal transmission mechanism based on beamforming technology may be introduced. By using the directivity of the beam, the path-loss can be effectively countered. Among them, the beamformed signal may include broadcast signals, synchronization signals, and UE-specific reference signals, etc.

[0096] Figure 2 shows a schematic diagram of the signal transmission process based on beamforming technology. As Figure 2As shown in the figure, on the side of the network device 110, a massive multiple-input multiple-output (massive MIMO) array can be configured. For example, 64, 128, 256, or 1024 antennas or other numbers of antennas can be configured. Multi-antenna communication can improve the transmission quality of wireless signals. Beamforming technology is a signal processing technology used for directional signal transmission or reception in a sensor array. By adjusting the phases of each antenna, the signals can be effectively superimposed to generate a stronger signal gain to compensate for the above losses during signal propagation, thereby ensuring the transmission quality of wireless signals. Beamforming technology can also be applied to the side of the terminal device 120, that is, an antenna array can also be configured on the side of the terminal device 120. Taking the downlink process as an example, the network device 110 can use beams with different directions, such as beams 111, 112, 113, 114, and 115, to transmit wireless signals in different directions to cover the cells it serves, and the terminal device 120 can use beams with different directions, such as beams 121, 122, 123, to receive signals. In some embodiments, to save power consumption, considering the sparsity of the spatial channel, the network device side can only turn on the beams of the served terminal devices and turn off other useless beams. It should be understood that the number of beams on the network device side and the number of beams on the terminal device side listed in the embodiments of this application are only illustrative and do not impose any limitations on the embodiments of this application.

[0097] It should be understood that in the embodiments of this application, the term "wireless communication" can also be abbreviated as "communication", and the term "communication" can also be described as "data transmission", "signal transmission", "information transmission", or "transmission", etc. In the embodiments of this application, transmission can include sending or receiving. Exemplarily, the transmission can be an uplink transmission. For example, it can be that the terminal device sends a signal to the network device; the transmission can also be a downlink transmission. For example, it can be that the network device sends a signal to the terminal device.

[0098] Both the network device 110 and the terminal device 120 can send or receive signals using beams with different directions. Generally, however, the network device 110 and the terminal device 120 usually use N beam pairs (beam pair link, BPL) with better communication performance selected during the beam training process for data transmission. One BPL includes a transmit beam on the network device side and a receive beam on the terminal device side, or one BPL includes a transmit beam on the terminal device side and a receive beam on the network device side. It should be understood that in the embodiments of this application, the beam on the network device side / terminal device side can be either a transmit beam or a receive beam. When the network device / terminal device side is the transmitter, the beam on the network device side / terminal device side can be called a transmit beam or a sending beam. When the network device / terminal device is the receiver, the beam on the network device side / terminal device side can be called a receive beam. In other words, in the downlink process, the beam on the network device side can be called a transmit beam, and the beam on the terminal device side can be called a receive beam. In the uplink process, the beam on the network device side can be called a receive beam, and the beam on the terminal device side can be called a transmit beam. In other words, the beam of the transmitter can be called a transmit beam, and the beam of the receiver can be called a receive beam, where the transmitter can be the network device or the terminal device, and correspondingly, the receiver can be the terminal device or the network device.

[0099] The selection process of the N beam pairs with better communication performance can be understood as a channel quality measurement process based on reference signal resources of different beams. Among them, the measurement of the channel quality can be carried out based on the synchronized signal after beamforming or the UE-specific reference signal. The network device side can send reference signals using different transmit beams (this process can be called beam scanning on the network device side). Correspondingly, the terminal device side can receive reference signals using different receive beams. The terminal device side can also send reference signals using different transmit beams (this process can be called beam scanning on the terminal device side). Correspondingly, the network device side can receive reference signals using different receive beams. Based on the beam scanning on the network device side, the terminal device can select the transmit beam on the network device side and / or the receive beam on the terminal device side. And based on the beam scanning on the terminal device side, the network device can select the transmit beam on the terminal device side and / or the receive beam on the network device side, so as to obtain N beam pairs with better communication performance. Further, the beam training process also includes the update of the transmit beam and the update of the receive beam.

[0100] The update of the transmit beam can be an update of the transmit beam on the network device side or an update of the transmit beam on the terminal device side. Exemplarily, when the transmit beam is the transmit beam on the network device side, the network device can send reference signals to the terminal device based on different transmit beams (this process can be referred to as beam scanning on the network device side). The terminal device receives the reference signals sent by the network device based on different transmit beams through the same receive beam, and determines the optimal transmit beam of the network device based on the received signals (this process can be referred to as beam matching), and then feeds back the optimal transmit beam of the network device to the network device, so as to facilitate the network device to update the transmit beam. When the transmit beam is the transmit beam on the terminal device side, the terminal device can send reference signals to the network device based on different transmit beams (this process can be referred to as beam scanning on the terminal device side). The network device receives the reference signals sent by the terminal device based on different transmit beams through the same receive beam, and determines the optimal transmit beam of the terminal device based on the received signals (this process can be referred to as beam matching), and then indicates the optimal transmit beam of the terminal device to the terminal device, so as to facilitate the terminal device to update the transmit beam.

[0101] It should be noted that in the process of updating the transmit beam in the embodiments of the present application, the process of the receiving end receiving the reference signal can be understood as the process of the receiving end measuring different transmit beams sent by the sending end (this process can be referred to as beam measurement or beam channel quality measurement), and the measurement result obtained is beam measurement information (or beam state information (BSI)). The receiving end can report one or more relatively good beam measurement information obtained to the sending end. Exemplarily, if the receiving end is a terminal device and the sending end is a network device, the terminal device can send one or more relatively good measurement results obtained in the beam measurement process to the network device through the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH). The beam measurement information can include at least one of beam index, reference signal receiving power (RSRP) of the beam, reference signal receiving quality (RSRQ) of the beam, channel quality indication (CQI), etc.

[0102] The update of the receiving beam can be an update of the receiving beam on the network device side or an update of the receiving beam on the terminal device side. Exemplarily, when the receiving beam is the receiving beam on the network device side, the terminal device sends a reference signal to the network device based on the same transmitting beam, and the network device uses different receiving beams to receive the reference signal sent by the terminal device, and then determines the optimal receiving beam of the network device based on the received signal to update the receiving beam of the network device. When the receiving beam is the receiving beam on the terminal device side, the network device sends a reference signal to the terminal device based on the same transmitting beam, and the terminal device uses different receiving beams to receive the reference signal sent by the network device, and then determines the optimal receiving beam of the terminal device based on the received signal to update the receiving beam of the terminal device.

[0103] The beamforming technology can focus the energy of the wireless signal to form a directional beam, so that the energy of the signal is concentrated in the direction where the receiving end is located. As mentioned above, the beam has directivity, and different beams can have different transmitting directions. Once the direction of the beam deviates from the receiving end or the user moves, it may occur that the direction of the shaping beam corresponding to the transmitted signal no longer matches the position of the moved user, resulting in the problem that the receiving end may not receive high-quality wireless signals or the received signal is frequently interrupted. Or, if there is an obstruction during the communication process, due to the poor diffraction ability of the high-frequency channel, the current serving beam will also be blocked, causing the signal to be unable to continue to be transmitted. Therefore, during the signal transmission process, dynamic measurement reports also need to be performed to track the changes of the shaping beam.

[0104] Taking the downlink signal transmission process as an example, the transmitting beam on the network device side and the receiving beam on the terminal device side may both change dynamically. As mentioned above, during the beam training process, the network device and the terminal device obtain N beam pairs with better communication. To save the beam scanning time of the terminal device, the network device can indicate the receiving beam to the terminal device by sending beam indication information to the terminal device, so that the network device and the terminal device use one of the N beam pairs with better communication obtained before for signal transmission. The quasi-co-location (QCL) information in the embodiments of the present application (which can also be referred to as QCL hypothesis, QCL hypothesis information or co-location hypothesis in the embodiments of the present application) can be used to assist in describing the receiving beamforming information and receiving process on the terminal device side.

[0105] For ease of understanding, the concept of QCL is briefly introduced below.

[0106] In the coordinated multiple point (CoMP) communication mode, signals may come from different transmitting receiving points (TRPs). To ensure the correct reception and demodulation of signals, the concept of antenna port quasi - co - location (QCL) is introduced in the LTE system. If two antenna ports are considered to be QCL, then the large - scale channel information of one antenna port can be inferred from the large - scale channel information of the other antenna port; conversely, if two antenna ports are indicated as non - QCL, then the terminal device cannot assume that the large - scale channel information of one antenna port can be inferred from the large - scale channel information of the other antenna port. Among them, the large - scale channel information includes: average gain, doppler spread, doppler shift, average delay, delay spread, etc. For example, when the QCL relationship is satisfied between antenna port A and antenna port B, it means that the large - scale channel characteristic parameters (i.e., the above - mentioned large - scale channel information) estimated from the signal on antenna port A are also applicable to the signal on antenna port B.

[0107] In a 5G communication system, a single transmission point (TRP) will also be configured with a large-scale antenna array structure with multiple panels. This structure will result in different large-scale information for different beams formed by different antenna panels. When the network device sends signals to the terminal device through a beam or the terminal device uploads signals to the network device through a beam, different signals will use different logical antenna ports. For example, the channel state information reference signal (CSI-RS) antenna port is used to transmit CSI-RS, and the demodulation reference signal (DMRS) antenna port is used to transmit DMRS. When the large-scale channel information of two antenna ports is quasi-co-located (QCL) (or satisfies the QCL relationship), it is considered that the beam used to transmit the reference signal of one antenna port can also be used to transmit the reference signal of the other antenna port. In addition to the time delay spread, Doppler spread, Doppler frequency shift, channel average gain, and average time delay mentioned above, the large-scale information of the beam also includes the angle of arrival (AoA) or the received angle of arrival, the dominant AoA, the average AoA, the power angular spectrum (PAS) of the AoA, the angle of departure (AoD) or the transmitted angle of departure, the dominant AoD, the average AoD, the power angular spectrum of the AoD, the terminal transmit beamforming, the terminal receive beamforming, the spatial channel correlation, the base station transmit beamforming, the base station receive beamforming, the spatial Rx parameters, and other parameters characterizing the spatial characteristics.

[0108] It should be noted that an antenna port refers to a logical port used for transmission, which can correspond to one or more actual physical antennas. The definition of an antenna port is from the perspective of the receiver, that is, if the receiver needs to distinguish the differences in resources in space, multiple antenna ports need to be defined. For the terminal device, the reference signal corresponding to a certain antenna port received by it defines the corresponding antenna port, although this reference signal may be a composite of signals transmitted by multiple physical antennas. In the embodiments of the present application, if the network device instructs the terminal device that two antenna ports are QCL with respect to a large-scale information characterizing the beam spatial characteristics, then the channel spatial characteristic parameters of one antenna port can be inferred from the channel spatial characteristic parameters of the other antenna port, and it can be shown that the terminal device / network device uses the same receive beam to receive the reference signals through these two antenna ports, or the terminal device / network device uses the same transmit beam to transmit the reference signals through these two antenna ports.

[0109] It should be noted that in the embodiments of the present application, the "beam" at the transmitting end can also be referred to as "reference signal resource". Correspondingly, the "beam index" can be referred to as "reference signal index (RS index)".

[0110] Exemplarily, the network device may indicate that the demodulation reference signal (DMRS) of the physical downlink control channel (PDCCH) or the physical downlink shared channel (PDSCH) of the terminal device is QCL-related to one or more of the multiple reference signal resources previously reported by the terminal device. For example, the reference signal may be CSI-RS, and the reference signal resources reported by the terminal device are CSI-RS resources (in fact, what the terminal device reports may be the CSI-RS resource index). Each CSI-RS resource index reported by the terminal device corresponds to a transceiver beam pair (i.e., a BPL) established during previous measurements based on the CSI-RS resource. Since the receive beam information of two reference signals or channels that satisfy the QCL relationship is the same, when the network device indicates that the demodulation reference signal of the PDCCH or PDSCH is QCL-related to one or more CSI-RS resources previously reported by the terminal device, the network device may send the QCL information of the demodulation reference signal of the PDCCH or PDSCH to the terminal device. The QCL information includes the CSI-RS resource index previously reported by the terminal device. Based on the CSI-RS resource index, the terminal device can infer the receive beam information for receiving the PDCCH or PDSCH, that is, the terminal device determines that the receive beam information for receiving the PDCCH or PDSCH is the same as the receive beam information in the beam pair corresponding to the CSI-RS resource index included in the QCL information. In other words, the terminal device can determine to use the receive beam in the beam pair corresponding to the CSI-RS resource index to receive the PDCCH or PDSCH based on the CSI-RS resource index; or it can also be understood that after receiving the QCL information sent by the network device, the terminal device will understand that the transmit beam on the network device side of the CSI-RS is also used to send the demodulation reference signal of the PDCCH or PDSCH, and thus use the same receive beam as the CSI-RS port to receive the PDCCH or PDSCH.On the other hand, when the network device indicates that the demodulation reference signal of the PDCCH or PDSCH and one or more CSI-RS resources previously reported by the terminal device satisfy the QCL relationship, the network device may send the QCL information of the demodulation reference signal of the PDCCH or PDSCH to the terminal device. It can be understood that the QCL information is used to instruct the terminal device to determine the filtering parameters for receiving the demodulation reference signal of the PDCCH or PDSCH. Specifically, the QCL information may include the CSI-RS resource index previously reported by the terminal device. The CSI-RS resource index reported by the terminal device corresponds to the receive filtering parameters obtained by the terminal device based on the CSI-RS resource measurement. The terminal device can determine that the filtering parameters for receiving the demodulation reference signal of the PDCCH or PDSCH are the same as the filtering parameters for receiving the CSI-RS by the terminal device before according to the CSI-RS resource index (i.e., the QCL information) indicated by the network device, that is, the receive beam information is the same. In the embodiments of the present application, the QCL information may also be expressed as "beam information". Without special instructions, the meanings expressed by the two are the same.

[0111] Exemplarily, in a specific implementation, when the receiving beam of the first reference signal received by the terminal device (for example, the first reference signal is DMRS) is the same as one of the receiving beams in the multiple transceiver beam pairs measured based on the second reference signal (for example, the second reference signal is CSI-RS) reported by the terminal device before, the QCL information sent by the network device to the terminal device may include at least one of the beam group index number of the second reference signal reported by the terminal device, the resource index number of the second reference signal, the port group number of the second reference signal, and the port number of the second reference signal. The second reference signal corresponds to one BPL in the multiple transceiver beam pairs measured based on the second reference signal reported by the terminal device before. In the embodiments of the present application, the beam group index number of the second reference signal reported by the terminal device can be understood as a resource set index number of the second reference signal reported by the terminal device. The resource index number of the second reference signal reported by the terminal device can be understood as a relative index number based on the multiple resource index number sets reported by the terminal device. For example, if the terminal device reports 4 absolute resource index numbers {1, 5, 7, 9} of the second reference signal, then based on the reporting result of the terminal device, the relative resource index number of the second reference signal is any one of {0, 1, 2, 3}. Among them, the relative resource index number 0 corresponds to the resource index number 1 of the second reference signal reported by the terminal device, the relative resource index number 1 corresponds to the resource index number 5 of the second reference signal reported by the terminal device, the relative resource index number 2 corresponds to the resource index number 7 of the second reference signal reported by the terminal device, and the relative resource index number 3 corresponds to the resource index number 9 of the second reference signal reported by the terminal device. The spatial characteristic parameters included in the QCL information describe the spatial channel characteristics between the antenna ports of the first reference signal and the second reference signal, and can enable the terminal device to complete the receiving-side beamforming or receiving processing process according to the QCL information.

[0112] The QCL information of a signal or a channel is usually indicated to the terminal device by being carried in the signaling sent by the network device to the terminal device. For different types of signals or channels, the configuration method of their QCL information is different. Taking the PDCCH, the periodic channel state information reference signal (abbreviated as periodic CSI-RS) and the semi-persistent scheduling channel state information reference signal (abbreviated as semi-persistent scheduling CSI-RS) as examples, in the current communication protocol standard, the QCL information of the above three types of signals or channels is indicated to the terminal device by means of explicit signaling.

[0113] For example, for PDCCH, the QCL information of PDCCH is configured by radio resource control (RRC) signaling and media access control control element (MAC CE) signaling. Specifically, the network device may configure one or more control resource sets (CORESETs) for the terminal device to send PDCCH. The network device may send a control channel to the terminal device on any control resource set corresponding to the terminal device, and the terminal device receives the PDCCH sent to itself by blindly detecting the control channel in the search space associated with the control resource set. The control resource set COREST is used to carry the time-frequency resources of the control channel PDCCH, and one COREST corresponds to one QCL information. Therefore, when the network device configures the COREST for the terminal device, it also configures K (K≥1, K is an integer) candidate QCL information of PDCCH. The K candidate QCL information can be configured by RRC signaling. When K>1, the network device may further indicate the QCL information of PDCCH through MAC CE signaling.

[0114] For another example, for periodic CSI-RS, the QCL information of periodic CSI-RS can be configured by RRC signaling. For semi-persistent scheduling CSI-RS, the QCL information of semi-persistent scheduling CSI-RS can be configured by RRC signaling and MAC CE signaling, where the MAC CE signaling for configuring semi-persistent scheduling CSI-RS may be the same as the MAC CE signaling or message for activating semi-persistent scheduling CSI-RS.

[0115] The above only exemplarily gives the configuration methods of the QCL information of three types of signals or channels. In specific implementations, there are also configuration methods for the QCL information of other types of signals or channels, which will not be listed one by one here. The configuration methods of the QCL information of the above several types of signals or channels all include semi-static configuration, which means that the terminal device will receive signals or channels according to the QCL information configured in the semi-static configuration method for a relatively long period of time. However, as mentioned above, the QCL information instructs the terminal device to receive the current signal or channel by referring to the information of the receiving beam used for receiving the reference signal before, that is, the QCL information instructs the terminal device to determine the receiving beam information for receiving the current signal or channel according to the reference signal resource index. However, when the network device turns off some beams, it may cause the terminal device to be unable to transmit and receive signals according to the receiving beam or receiving filtering parameters corresponding to the reference signal resource index indicated in the QCL information, or the network device does not use the transmitting beam having a QCL relationship with the reference signal indicated in the QCL information to transmit the current signal or channel, resulting in the terminal device being unable to obtain accurate receiving beam information for receiving the current signal or channel (that is, the terminal device is unable to determine the QCL information of the above signals or channels). If the terminal device still receives the current signal or channel according to the QCL information configured in the semi-static configuration method, it may cause the terminal device to be unable to correctly receive the signal or channel currently transmitted by the network device.

[0116] Therefore, a method for determining the QCL information of the terminal device or determining the receiving behavior of the terminal device is needed to ensure the accuracy of signal reception. The following will be combined with Figure 3 to describe the embodiments of the present application in detail.

[0117] It should be noted that the operations performed by the terminal device described above can also be performed by a chip device. For example, the chip device is a chip device configured in the terminal device; the operations performed by the network device described above can also be performed by a chip device. For example, the chip device is a chip device configured in the network device. For the convenience of description, in the embodiments of the present application, the terminal device and the chip device that perform the same operations as the terminal device are referred to as the first communication device, and the network device and the chip device that perform the same operations as the network device are referred to as the second communication device.

[0118] Figure 3 Fig. shows a schematic flowchart of the wireless network communication method according to the embodiment of the present application. Figure 3 The method 300 can be executed by the first communication device. The first communication device can be, for example, Figure 1 or Figure 2 the terminal device 120 shown in. The method 300 can include steps S310 to S340.

[0119] In step S310, the second communication device configures the first quasi - co - location (QCL) information of the target signal for the first communication device.

[0120] The first communication device may be a terminal device or a chip device. The chip device may be a chip device configured in the terminal device. The second communication device may be a network device or a chip device. The chip device may be a chip device configured in the network device. For ease of understanding, in the embodiments of the present application, the first communication device is taken as an example of a terminal device, and the second communication device is taken as an example of a network device for description.

[0121] The first quasi - co - location (QCL) information is used to indicate the beam information for the first communication device, such as a terminal device, to receive the target signal. For example, the first QCL information may indicate the reception filtering parameters when the terminal device receives the target signal. Exemplarily, the first QCL information includes one or more reference signal resource indexes reported by the terminal device before. Each of the one or more reference signal resource indexes corresponds to a transceiver beam pair (BPL) established when the terminal device measures based on the reference signal resource. Each reference signal resource index corresponds to a BPL, and each BPL includes a reception beam or reception filtering parameter information. The terminal device can consider that the reception filtering parameters for the terminal device to receive the target signal are the same as the reception filtering parameters when the terminal device previously received the reference signal corresponding to the reference signal resource index according to the first QCL information. That is, the terminal device can indirectly obtain the reception filtering parameters for receiving the target signal according to the reference signal resource index in the first QCL information. In some embodiments, the first QCL information configured by the network device for the terminal device can also be understood as the network device indicating the reception beam information for the terminal device to receive the target signal.

[0122] The target signal in the embodiments of the present application may be a signal or a channel, such as a physical downlink control channel (PDCCH), a periodic channel state information reference signal (periodic CSI - RS), a semi - persistent scheduling channel state information reference signal (semi - persistent scheduling CSI - RS), and other signals or channels, such as a synchronization broadcast channel block, an aperiodic CSI - RS, a broadcast - type physical downlink shared channel, etc. The configuration methods of the QCL information for different types of target signals are different. The configuration method of the QCL information for the target signal in the embodiments of the present application includes a semi - static configuration method, such as a radio resource control (RRC) signaling configuration method, etc.

[0123] In step S320, the first communication device determines the first quasi - co - location (QCL) information of the target signal.

[0124] For different types of target signals, the configuration methods of the first QCL information of the target signal are different. Correspondingly, the methods for the first communication device, such as a terminal device, to determine the first QCL information of the target signal are different.

[0125] As an example, if the target signal is the PDCCH, the first QCL information of the target signal (i.e., the first QCL information of the PDCCH) can be configured by RRC signaling and MAC CE signaling. For example, a second communication device such as a network device configures a set of candidate QCL information of the target signal through RRC signaling, and the set of candidate QCL information includes multiple candidate QCL information; the network device indicates, through MAC CE signaling, that one of the multiple candidate QCL information is the first QCL information of the target signal, that is, the first QCL information of the target signal is one of the multiple candidate QCL information.

[0126] As another example, if the target signal is the periodic CSI-RS, the first QCL information of the target signal (i.e., the first QCL information of the periodic CSI-RS) can be configured by RRC signaling. The terminal device can determine the first QCL information of the target signal according to the configuration information in the RRC signaling.

[0127] As yet another example, if the target signal is the semi-persistent scheduling CSI-RS, the first QCL information of the target signal (i.e., the first QCL information of the semi-persistent scheduling CSI-RS) can be configured by RRC signaling and MAC CE signaling. The terminal device can determine the first QCL information of the target signal according to the configuration information in the RRC signaling and MAC CE signaling.

[0128] In other words, in step S320, the terminal device can determine the first QCL information of the target signal in accordance with the existing method. For example, the network device indicates the first QCL information of the target signal to the terminal device through explicit signaling. It should be understood that the first QCL information of the target signal in the embodiments of the present application can also be predefined or preconfigured, and both the network device and the terminal device are preconfigured or predefined with the first QCL information of the target signal, and the terminal device can receive the target signal according to the preconfigured or predefined first QCL information.

[0129] In step S330, when the first QCL information fails, the first communication device determines the second QCL information.

[0130] It should be understood that the invalidation of the first QCL information can be understood as that the first communication device, such as a terminal device, cannot accurately receive the target signal according to the first QCL information. The reason for the invalidation of the first QCL information (that is, the terminal device cannot accurately receive the target signal according to the first QCL information) is that the filtering parameter of the receiving beam in the transceiver beam pair corresponding to the reference signal resource index used by the terminal device when receiving the target signal has poor reference. In the embodiments of the present application, the reason for the invalidation of the first QCL information is that the second communication device, such as the network device side, turns off some beams. For example, the network device turns off the transmitting beam corresponding to the reference signal resource index in the first QCL information, so that the reference signal under the transmitting beam cannot be transmitted, thereby making the filtering parameter of the receiving beam corresponding to the reference signal resource index no longer have reference value or have poor reference. Another example is that the network device turns off the beam used to transmit the target signal indicated by the first QCL information, that is, the network device does not use the beam used to transmit the target signal indicated by the first QCL information to transmit the target signal, while the terminal device still receives the target signal according to the receiving beam corresponding to the beam used to transmit the target signal indicated in the first QCL information, resulting in the terminal device being unable to correctly receive the target signal.

[0131] The second QCL information is used to indicate the beam information for the terminal device to receive the target signal. In other words, when the first QCL information of the target signal is invalid, the terminal device cannot correctly receive the target signal according to the first QCL information and can receive the target signal according to the second QCL information.

[0132] In the embodiments of the present application, the terminal device can determine the invalidation of the first QCL information by itself or according to the indication of the network device.

[0133] As an example, the terminal device can determine the invalidation of the first QCL information by itself.

[0134] For example, a network device may send beam shutdown information or a message to a terminal device. When the terminal device learns that the network device shuts down a beam based on the beam shutdown information or message, it may determine that the first QCL information becomes invalid. Among them, the network device may notify the terminal device of information about all the beams shut down on the network device side. The terminal device may determine whether the transmit beam corresponding to the reference signal resource index included in the first QCL information is shut down, and / or determine whether the transmit beam corresponding to the QCL information for guiding the transmission of a target signal is shut down, so as to determine whether the first QCL information becomes invalid. In other words, when the terminal device determines that the transmit beam corresponding to the reference signal resource index included in the first QCL information is shut down, and / or determines that the transmit beam corresponding to the QCL information of the transmit beam for transmitting the target signal is shut down, it may determine that the first QCL information becomes invalid. In some embodiments, the network device may only notify the terminal device whether the transmit beam corresponding to the reference signal resource index included in the first QCL information is shut down, and / or whether the transmit beam for transmitting the target signal is shut down. The terminal device may determine whether the first QCL information becomes invalid according to the information notified by the network device. In other words, when the network device notifies the terminal device that the transmit beam corresponding to the reference signal resource index included in the first QCL information is shut down, and / or the transmit beam for transmitting the target signal is shut down, the terminal device may determine that the first QCL information becomes invalid according to the beam shutdown information on the network device side. It should be understood that in the embodiments of the present application, when at least one beam in a BPL or a transceiver beam pair is shut down, it may be understood that the BPL or the transceiver beam pair is shut down. For example, when the transmit beam in a BPL is shut down, it may be considered that the BPL is shut down. It should also be understood that when at least one beam in a BPL is shut down, the BPL will no longer be used for signal transmission.

[0135] As another example, the terminal device may determine that the first QCL information becomes invalid according to an indication from the network device. There are various ways for the terminal device to determine that the first QCL information becomes invalid according to the indication from the network device.

[0136] For example, the network device may send indication information to the terminal device. The indication information is used to indicate whether the first QCL information is invalid or not. For example, the indication information may indicate that the first QCL information is invalid through a preset bit position 0, and indicate that the first QCL information is not invalid (or the first QCL information is valid) through a preset bit position 1. Correspondingly, when the terminal device receives the indication information sent by the network device, when the preset bit position in the indication information is 0, the terminal device may determine that the first QCL information is invalid; when the preset bit position in the indication information is 1, the terminal device may determine that the first QCL information is not invalid.

[0137] For another example, the network device may indicate to the terminal device that the first QCL information is invalid by sending indication information to the terminal device, and indicate to the terminal device that the first QCL information is not invalid by not sending the indication information; or, indicate to the terminal device that the first QCL information is not invalid by not sending the indication information, and indicate to the terminal device that the first QCL information is invalid by sending the indication information. Correspondingly, for the former case, if the terminal device receives the indication information sent by the network device, it can determine that the first QCL information is invalid; if the terminal device does not receive the indication information sent by the network device, it can determine that the first QCL information is not invalid. For the latter case, the judgment of the terminal device is opposite. For the sake of brevity, it will not be elaborated here.

[0138] For yet another example, the network device may send indication information to the terminal device, and the indication information is used to indicate that the first QCL information is valid or the second QCL information is valid. Exemplarily, the network device may indicate that the first QCL information is valid by a preset bit position 0 in the indication information, and indicate that the second QCL information is valid by a preset bit position 1. When the indication information indicates that the first QCL information is valid, the terminal device may receive the target signal according to the first QCL information; when the indication information indicates that the second QCL information is valid, the terminal device may receive the target signal according to the second QCL information. In other words, when the indication information indicates that the second QCL information is valid, the terminal device may determine that the first QCL information is invalid.

[0139] In other words, optionally, before step S330, the terminal device receives the indication information sent by the network device. When the terminal device receives the indication information sent by the network device, the terminal device determines that the first QCL information is invalid, where the indication information is used to indicate that the first QCL information is invalid and / or used to indicate the second QCL information. In some embodiments, the indication information for indicating that the first QCL information is invalid and the indication information for indicating the second QCL information may be carried or borne by the same message or signaling, or may be carried or borne by different messages or signaling. When the indication information for indicating that the first QCL information is invalid and the indication information for indicating the second QCL information are carried by different messages or signaling, the different messages or signaling may be sent simultaneously or separately. The embodiments of the present application do not make specific limitations. Optionally, the indication information may be carried in the downlink control information DCI.

[0140] Optionally, when the network device indicates to the terminal device that the first QCL information is invalid, the network device may first determine that the first QCL information is invalid. The network device may determine whether the first QCL information is invalid according to the information of the beam shutdown. For example, if the network device shuts down the transmit beam in the transceiver beam pair corresponding to the reference signal resource index included in the first QCL information, and / or the network device shuts down the transmit beam for transmitting the target signal, the network device may determine that the first QCL information is invalid. Another example is that the network device may also consider that as long as there is a beam shutdown, it is considered that the first QCL information is invalid.

[0141] In other words, when the transmit beam in the transceiver beam pair corresponding to the reference signal resource index included in the first QCL information is shut down, and / or the transmit beam on the network device side for transmitting the target signal is shut down, it can be used as a criterion or condition for determining the invalidity of the first QCL information, which is equivalent to the invalidity of the first QCL information. The network device and the terminal device may determine whether the first QCL information is invalid according to this criterion (condition) or determine the invalidity of the first QCL information according to this criterion (condition). When the network device determines that the first QCL information is invalid, the network device may notify the terminal device that the first QCL information is invalid. For example, the network device directly indicates that the first QCL information is invalid, or the network device indirectly indicates the invalidity of the first QCL information by indicating the validity of the second QCL information.

[0142] There are various ways for the terminal device to determine the second QCL information. The second QCL information may be predefined or configured by the network device.

[0143] As an example, the second QCL information may be predefined, that is, the second QCL information in the embodiments of the present application may be pre-configured. The second QCL information is pre-defined or pre-configured on both the network device side and the terminal device side. When the first QCL information of the target signal is invalid, the terminal device may determine the predefined second QCL information.

[0144] For example, the second QCL information may include the index of a first synchronization signal block (SSB) received by a first communication device, such as a terminal device. The index of the first synchronization signal block SSB corresponds to the reception filtering parameter when the terminal device measures based on the first synchronization signal block SSB. That is to say, the second QCL information instructs the terminal device to use the same filtering parameter as the reception beam of the first synchronization signal block it receives to receive the target signal. The synchronization signal block SSB is a basic signal for the terminal device to access the cell. Therefore, the beam scanning of the synchronization signal block SSB is usually not easily turned off. When the beam of the network device is suddenly turned off, the terminal device can refer to the reception filtering parameter corresponding to the previous first synchronization signal block index to receive the target signal, so as to ensure that the terminal device can correctly receive the target signal.

[0145] Optionally, the first synchronization signal block may be the synchronization signal block associated with a physical random access channel (PRACH) sent by the first communication device, such as a terminal device. Correspondingly, the index of the first synchronization signal block may be the index of the synchronization signal block associated with the PRACH sent by the terminal device. It should be understood that when the terminal device accesses the network, the network device may send SSB messages to the terminal device using beams in different directions. The SSBs sent in different directions may be the same or different. The terminal device can measure the SSBs to determine the beam pair used for the terminal device to access the network. Each SSB is associated with the PRACH resources used by the terminal device to access the network. The PRACH resources associated with different SSBs are different. It can also be understood that the SSBs sent in different directions and the PRACH resources are in one-to-one correspondence, or it can be understood that the beams in different directions and the PRACH resources are in one-to-one correspondence. Therefore, the synchronization signal block associated with the PRACH can be determined according to the PRACH sent by the terminal device, that is, the first synchronization signal block. Optionally, the first synchronization signal block may be the synchronization signal block associated with the physical random access channel PRACH sent by the terminal device most recently. This can ensure the validity of the reference beam indicated in the QCL information obtained by the terminal device, thereby improving the accuracy of target signal reception. In some embodiments, the first synchronization signal block may be the synchronization signal block associated with a physical random access channel PRACH sent by the terminal device at a certain time within a preset time. The embodiments of the present application do not make specific limitations.

[0146] Optionally, the first synchronization signal block may be a synchronization signal block reported by a first communication device, such as a terminal device, to a network device. After the terminal device performs synchronization signal block measurement, it may report one or more SSB measurement results obtained to the network device. In some embodiments, if the terminal device reports one SSB measurement result to the network device, the first synchronization signal block may be the one SSB reported by the terminal device to the network device. In some embodiments, if the terminal device reports multiple SSB measurement results to the network device, the first synchronization signal block may be one of the multiple SSBs reported by the terminal device to the network device. It should be understood that what the terminal device reports to the network device may be a synchronization signal block index. Optionally, the first synchronization signal block may be one SSB among the synchronization signal blocks reported by the terminal device most recently. Optionally, the first synchronization signal block may be the strongest SSB reported by the terminal device to the network device, or the first synchronization signal block may be an SSB among the multiple SSBs reported by the terminal device to the network device whose SSB measurement result meets a preset condition or threshold.

[0147] Optionally, there are multiple types of synchronization signal blocks in the embodiments of the present application. For example, it may be an SSB corresponding to the lowest SSB time index, an SSB corresponding to the received control channel resource set 0, an SSB in the initial access phase, or other SSBs. The embodiments of the present application do not make specific limitations.

[0148] For another example, the second QCL information may include a reference signal resource index in a first measurement result of a first communication device, such as a terminal device. "The measurement result of the terminal device" may be understood as the channel quality measurement result of the terminal device for a reference signal, and "the first measurement result of the terminal device" may be understood as one of the channel quality measurement results of the terminal device for a reference signal. The measurement result of the terminal device includes one or more reference signal indexes, and each reference signal index corresponds to a channel quality. For example, the channel quality may be characterized by a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ).

[0149] Optionally, the first measurement result may be a measurement result of a channel quality measurement for a first reference signal resource set. The first reference signal resource set includes a plurality of reference signal resources, each of which corresponds to a reference signal. As described above, "reference signal resource" may also be expressed as a "beam", and accordingly, the "first reference signal resource set" may be understood as a "beam set" or a "full set of beams", wherein the beam set includes a plurality of beams, each of which corresponds to a reference signal. Generally, the network device side needs to open all reference signal resources in the reference signal resource set at regular intervals to obtain information on the channel quality measurement of the first reference signal resource set on the network device side. For example, the network device may configure a long-period reference signal set, which corresponds to a first reference signal resource set on the network device side, wherein each reference signal in the reference signal set corresponds to a reference signal resource (or beam) in the first reference signal resource set, and the terminal device monitors and obtains the channel quality of all reference signal resources in the first reference signal resource set on the network device side based on the channel quality measurement of all reference signals in the reference signal set corresponding to the first reference signal resource set. Optionally, the first reference signal resource set includes part or all of the reference signal resources of all reference signal resources covering the service cell of the network device (it can also be understood that the first reference signal resource set includes part or all of the beams of the service cell covering the network device). Optionally, the first measurement result may be one of the channel quality measurement results of the most recent first reference signal resource set. For example, the first measurement result may be the strongest channel quality measurement result among the channel quality measurement results of the most recent first reference signal resource set. In some embodiments, the first measurement result may also be a channel quality measurement result that meets a preset condition or threshold in the channel quality measurement results of a first reference signal resource set within a preset time.

[0150] Optionally, the first measurement result may be the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by a first communication device, such as a terminal device. In other words, "the second QCL information may include the reference signal resource index in the first measurement result of the terminal device" can be understood as that the second QCL information may include the preset reference signal resource index in the channel quality measurement results reported by the terminal device, and the first measurement result includes the preset reference signal resource index. As an example but not a limitation, the first measurement result may be the measurement result corresponding to the reference signal resource index with the largest, smallest, or intermediate value in the channel quality measurement results reported by the terminal device, that is, the preset reference signal resource index is the reference signal resource index with the largest index, the reference signal resource index with the smallest index, or the reference signal resource index with the intermediate value. That is to say, the second QCL information may include the reference signal resource index with the largest, smallest, or intermediate value in the channel quality measurement results reported by the terminal device. The preset reference signal resource index may also be other values, which are not limited in the embodiments of the present application.

[0151] Optionally, in the embodiments of the present application, the reference signal associated with the "first reference signal resource set" may be a synchronization signal block SSB, a channel state information reference signal, or other reference signals, such as a demodulation reference signal (DMRS), which is not limited in the embodiments of the present application.

[0152] Optionally, when the reference signal associated with the "first reference signal resource set" is a synchronization signal block SSB, specifically, there can be multiple types of SSBs. For example, it can be the SSB corresponding to the lowest SSB time index, the SSB corresponding to the received control channel resource set 0, the SSB in the initial access phase, or other SSBs, which are not specifically limited in the embodiments of the present application.

[0153] When the second QCL information described above is predefined, the target signal applicable to the manner in which the terminal device determines the second QCL information may be a PDCCH, a periodic CSI-RS, a semi-persistent scheduling CSI-RS, or other signals or channels, which are not specifically limited in the embodiments of the present application.

[0154] When the target signal is a PDCCH or a semi-persistent scheduling CSI-RS, the terminal device may also determine the second QCL information in the following manner.

[0155] As mentioned above, a second communication device such as a network device may configure a candidate QCL information set for a target signal through RRC signaling. The candidate QCL information set includes multiple candidate QCL information. The network device indicates, through MAC CE signaling, that one of the multiple candidate QCL information is the first QCL information of the target signal. When the first QCL information becomes invalid, a first communication device such as a terminal device may determine, as the second QCL information, one QCL information in the candidate QCL information set configured by the network device for the terminal device, excluding the first QCL information. By way of example and not limitation, the multiple candidate QCL information in the candidate QCL information set may be indicated through transmission configuration indicator (TCI) signaling. The network device may configure a TCI state set for the terminal device through RRC signaling. The TCI state set includes multiple TCIs, where the multiple TCIs in the TCI state set correspond one-to-one to the multiple candidate QCL information in the candidate QCL information set. The MAC CE signaling may indicate one TCI among the multiple TCIs. The terminal device determines the TCI according to the MAC CE signaling, and thus determines the QCL information. If the TCI indicated by the MAC CE signaling becomes invalid, the terminal device may select, as the second QCL information, the QCL information indicated by another TCI in the TCI state set configured by the RRC signaling, excluding the TCI used to indicate the first QCL information.

[0156] Optionally, if the TCI indicated by the MAC CE becomes invalid, the terminal device may select, as the second QCL information, the QCL information indicated by a valid TCI state with the largest or smallest reference signal resource index in the TCI state set. It should be understood that the terminal device may also select, as the second QCL information, the QCL information indicated by a valid TCI state with other numerical values of the reference signal resource index in the TCI state set. The embodiments of the present application do not make specific limitations.

[0157] Optionally, if all TCI states in the TCI state set configured by the network device for the terminal device become invalid, the terminal device may determine the second QCL information according to several determination methods for the terminal device to determine the second QCL information when the target signal is a periodic CSI-RS. For details, reference may be made to the above description. For simplicity, it will not be elaborated here.

[0158] It should be understood that in the embodiments of the present application, "TCI invalid" may be understood as the QCL information indicated by the TCI becoming invalid, that is, the transmit beam corresponding to the reference signal resource index indicated by the TCI is turned off.

[0159] When the second QCL information is predefined, the configuration method of the second QCL information can be determined according to different types of signals or channels. The second QCL information can be configured in any of the following ways: radio resource control (RRC) signaling; or, RRC signaling and media access control element (MAC CE) signaling; or, RRC signaling and downlink control information (DCI) signaling. The configuration method of the second QCL information can be the same as that of the first QCL information. For details, please refer to the above description.

[0160] The above introduces the case where the second QCL information is predefined. As another example, the second QCL information can be configured by a second communication device, such as a network device. It should be understood that in the embodiments of the present application, the second QCL information is dynamically configured by the network device.

[0161] For example, when the first QCL information fails, a first communication device, such as a terminal device, can receive the second QCL information sent by a second communication device, such as a network device. The second QCL information is dynamically configured by the network device for the terminal device after determining that the first QCL information fails. The second QCL information can include a reference signal resource index reconfigured by the network device for the terminal device. The terminal device can determine the filtering parameter (or receiving beam) for receiving the target signal according to the reference signal resource index reconfigured by the network device.

[0162] When the first QCL information fails, the network device can reconfigure the second QCL information for the terminal device, so as to ensure that when the network device turns off some beams, the terminal device can receive the target signal according to the QCL assumption corresponding to other valid beams, thereby ensuring the accuracy of target signal reception.

[0163] Optionally, the second QCL information can be carried in the downlink control information (DCI) signaling or the media access control element (MAC CE) signaling. The DCI signaling can be designed accordingly according to different types of signals or channels. For example, the DCI can be a DCI indicating the failure of the reference signal resource index, or a newly added DCI, or a DCI indicating the dynamic release of the CSI-RS. The MAC CE signaling can also be designed accordingly according to different types of signals or channels, similar to the case of the DCI signaling. The embodiments of the present application do not make specific limitations.

[0164] Optionally, when the second QCL information is configured by the network device, before or at step S330, a first communication device, such as a terminal device, can receive the indication information sent by a second communication device, such as a network device. The indication information is used to indicate the failure of the first QCL information. In some embodiments, when the network device sends the second QCL information to the terminal device through signaling, it can also send the indication information to the terminal device. The indication information is used to indicate the failure of the first QCL information.

[0165] In step S340, the terminal device receives the target signal according to the second QCL information.

[0166] In this step, the terminal device can determine the reception filtering parameters for receiving the target signal according to the second QCL information, and thus receive the target signal according to the reception filtering parameters.

[0167] In the technical solution provided by the embodiments of the present application, when the first QCL information of the target signal fails, the first communication device, such as the terminal device, can receive the target signal according to the second QCL information. Therefore, when the first QCL information configured by the second communication device, such as the network device, for the first communication device fails, that is, when the second communication device turns off some beams, such as the transmission beam corresponding to the reference signal resource index in the first QCL information or the transmission beam for transmitting the target signal, the QCL information and reception behavior for the first communication device, such as the terminal device, to receive the target signal can be re-determined, thereby ensuring the accuracy of target signal reception.

[0168] As described above, the wireless network communication method provided by the embodiments of the present application can be applied to the case where the terminal device operates on one bandwidth part (BWP) (that is, the terminal device does not perform BWP switching). However, it should be understood that the embodiments of the present application can also be applied to the case where the terminal device switches between different bandwidth parts BWP. The following combines Figure 4 to describe a specific non-limiting example of the embodiments of the present application in more detail. Figure 4 In the following, the target signal is taken as an example of PDCCH for description, but the embodiments of the present application can also be applied to other types of signals or channels.

[0169] Figure 4 shows a schematic flowchart of a wireless network communication method according to another embodiment of the present application. As Figure 4 shown, the method 400 includes steps S410 to S450.

[0170] In step S410, the second communication device configures a CORESET / PDSCH TCI state set for the first communication device.

[0171] For ease of understanding, in the embodiments of the present application, the first communication device is taken as an example of a terminal device, and the second communication device is taken as an example of a network device for description.

[0172] In this step, the second communication device, such as a network device, can configure a set of TCI states for different bandwidth parts (BWPs). A BWP can be understood as the operating bandwidth of the first communication device, such as a terminal device, corresponding to a specific carrier and a specific parameter set. The terminal device can configure multiple BWPs, but only one can be activated at the same time. Different BWPs can adopt different parameter sets. The terminal device transmits and receives signals within the activated BWP range. Outside the BWP, the terminal device will not receive PDSCH, PDCCH, or CSI-RS. Therefore, in this step, the network device configures a set of TCI states for different BWPs of the terminal device. Each set of TCI states includes multiple TCI states, and a TCI state can indicate the QCL information for the terminal device to receive signals. For example, taking the terminal device configured with 2 BWPs (BWP#1 and BWP#2) as an example, the network device can configure set of TCI states #1 for BWP#1 and set of TCI states #2 for BWP#2, where one TCI state in set of TCI states #1 is used to indicate the first QCL information for the terminal device to receive signals on BWP#1.

[0173] In step S420, when the first QCL information becomes invalid, the second communication device uses DCI#1 to instruct the first communication device to switch from the current BWP#1 to BWP#2 and schedules the data PDSCH#1 on BWP#2.

[0174] In this step, when the first QCL information indicated in set of TC states #1 becomes invalid, the second communication device, such as a network device, can notify the terminal device that the first QCL information has become invalid and at the same time instruct the first communication device, such as a terminal device, to receive signals on the activated BWP#2, such as Figure 4 the PDSCH#1 shown in

[0175] In step S430, the first communication device switches to BWP#2.

[0176] In step S440, the first communication device receives PDSCH#1 using the second QCL information.

[0177] In this step, since the first QCL information for receiving PDSCH#1 has become invalid, the first communication device, such as a terminal device, can receive PDSCH#1 using the second QCL information. In the embodiments of the present application, the second QCL information can be predefined or dynamically configured by the network device for the terminal device. The determination method of the second QCL information can refer to the description in the above method 300. For the sake of brevity, it will not be elaborated here.

[0178] In step S450, the first communication device receives DCI#2 on BWP#2 and schedules the data PDSCH#2 on BWP#2.

[0179] In this step, since BWP#2 is in an active state, a first communication device, such as a terminal device, can receive signals on BWP#2. It should be understood that in this step, the terminal device receives the data PDSCH#2 on BWP#2 using the second QCL information.

[0180] As described above in connection with Figures 1 to 4 the method embodiments of the present application have been described in detail. Next, in connection with Figures 5 to 8 the device embodiments of the present application will be described in detail. It should be understood that the descriptions of the method embodiments and the device embodiments correspond to each other. Therefore, for the parts not described in detail, reference can be made to the previous method embodiments.

[0181] Figure 5 FIG. is a schematic structural diagram of a device provided in an embodiment of the present application. Figure 5 The device 500 may be the first communication device mentioned above. For example, it may be Figure 1 or Figure 2 a specific example of the terminal device 120 shown in FIG. The device 500 can be used to implement the steps performed by the first communication device in the above, such as Figure 3 or Figure 4 the methods shown in FIG. To avoid redundancy, the description will not be repeated.

[0182] Figure 5 The device 500 shown in FIG. includes a determination module 510 and a reception module 520.

[0183] The determination module 510 is used to determine the first quasi co-location (QCL) information of the target signal.

[0184] The reception module 520 is used to receive the target signal according to the second QCL information when the first QCL information becomes invalid.

[0185] Optionally, the second QCL information is predefined.

[0186] Optionally, the target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: the index of the first synchronization signal block (SSB) received by the device 500; or, the reference signal resource index in the first measurement result of the device 500.

[0187] Optionally, the target signal is a Physical Downlink Control Channel (PDCCH) or a Semi-Persistent Scheduling Channel State Information Reference Signal (SPS-CSI-RS), and the second QCL information includes any one of the following: a QCL information other than the first QCL information in the candidate QCL information set configured by the second communication device for the device 500, where the candidate QCL information set includes the first QCL information; or, the index of the first Synchronization Signal Block (SSB) received by the device 500; or, the reference signal resource index in the first measurement result of the device 500.

[0188] Optionally, the first Synchronization Signal Block (SSB) is the synchronization signal block associated with the Physical Random Access Channel (PRACH) sent by the device 500, or the synchronization signal block reported by the device 500 to the network device.

[0189] Optionally, when the first Synchronization Signal Block (SSB) is the synchronization signal block associated with the Physical Random Access Channel (PRACH) sent by the device 500, the first Synchronization Signal Block (SSB) is the synchronization signal block associated with the most recent Physical Random Access Channel (PRACH) sent by the device 500.

[0190] Optionally, the first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the device 500.

[0191] Optionally, the determination module 510 is further configured to determine that the first QCL information is invalid when the receiving module 520 receives the indication information sent by the second communication device, where the indication information is used to indicate that the first QCL information is invalid and / or is used to indicate the second QCL information.

[0192] Optionally, the indication information is carried in the Downlink Control Information (DCI).

[0193] Optionally, the first QCL information or the second QCL information is configured in any one of the following ways: Radio Resource Control (RRC) signaling; or, RRC signaling and Medium Access Control Element (MAC CE) signaling; or, RRC signaling and Downlink Control Information (DCI) signaling.

[0194] Optionally, when the first QCL information is invalid, the receiving module 520 is further configured to receive the second QCL information sent by the network device.

[0195] Optionally, the second QCL information is carried in the Downlink Control Information (DCI) signaling or the Medium Access Control Element (MAC CE) signaling.

[0196] Optionally, the determination module 510 may be a processor.

[0197] Optionally, the receiving module 520 may be a receiver, transceiver, or transceiver unit.

[0198] Figure 6 It is a schematic structural diagram of a communication device provided by an embodiment of the present application. Figure 6 The illustrated communication device 600 may correspond to the first communication device described above, for example, it may be Figure 1 or Figure 2 a specific example of the terminal device 120 in. The communication device 600 includes: a processor 602. In the embodiments of the present application, the processor 602 is used to control and manage the actions of the first communication device, such as the terminal device. For example, the processor 602 is used to support the first communication device, such as the terminal device, to execute the Figure 3 or Figure 4 methods, operations, or functions shown. Optionally, the communication device 600 may further include: a memory 601 and a communication interface 603; the processor 602, the communication interface 603, and the memory 601 may be connected to each other or connected to each other through a bus 604. Among them, the communication interface 603 is used to support the first communication device, such as the terminal device, to communicate, and the memory 601 is used to store the program code and data of the first communication device, such as the terminal device. The processor 602 calls the code stored in the memory 601 for control and management. The memory 601 may or may not be coupled to the processor. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be electrical, mechanical, or other forms, and is used for information interaction between devices, units, or modules.

[0199] Among them, the processor 602 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in combination with the disclosure of the present application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication interface 603 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces. The bus 604 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6It is represented by only one thick line, but it does not mean that there is only one bus or one type of bus.

[0200] Figure 7 It is a schematic structural diagram of a device provided by another embodiment of the present application. Figure 7 The device 700 can be the second communication device mentioned above. For example, it can be Figure 1 or Figure 2 a specific example of the network device 110 shown. The device 700 can be used to implement the steps performed by the second communication device in the above, such as Figure 3 or Figure 4 the method. To avoid redundancy, it will not be described repeatedly.

[0201] Figure 7 The device 700 shown includes a configuration module 710 and a sending module 720.

[0202] The configuration module 710 is used to configure the first quasi - co - location (QCL) information of the target signal for the first communication device.

[0203] The sending module 720 is used to, when the first QCL information fails, instruct the first communication device to receive the target signal according to the second QCL information.

[0204] Optionally, the second QCL information is pre - defined.

[0205] Optionally, the target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: the index of the first synchronization signal block (SSB) received by the first communication device; or, the index of the reference signal in the first measurement result of the first communication device.

[0206] Optionally, the target signal is a physical downlink control channel (PDCCH) or a semi - persistent scheduling channel state information reference signal, and the second QCL information includes any one of the following information: a QCL information other than the first QCL information in the candidate QCL information set configured by the configuration module 710 for the first communication device, where the candidate QCL information set includes the first QCL information; or, the index of the first synchronization signal block (SSB) received by the first communication device; or, the index of the reference signal in the first measurement result of the first communication device.

[0207] Optionally, the first synchronization signal block (SSB) is the synchronization signal block associated with the physical random access channel (PRACH) sent by the first communication device, or the synchronization signal block reported by the first communication device to the network device.

[0208] Optionally, when the first synchronization signal block (SSB) is the synchronization signal block associated with the physical random access channel (PRACH) sent by the first communication device, the first SSB is the synchronization signal block associated with the most recent PRACH sent by the first communication device.

[0209] Optionally, the first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the first communication device.

[0210] Optionally, the sending module 720 is further configured to send indication information to the first communication device, where the indication information is used to indicate that the first QCL information is invalid, and / or is used to indicate the second QCL information.

[0211] Optionally, the indication information is carried in the downlink control information (DCI).

[0212] Optionally, the first QCL information or the second QCL information is configured in any of the following ways: radio resource control (RRC) signaling; or, RRC signaling and media access control element (MAC CE) signaling; or, RRC signaling and downlink control information (DCI) signaling.

[0213] Optionally, the sending module 720 is specifically configured to send the second QCL information to the first communication device.

[0214] Optionally, the second QCL information is carried in the downlink control information (DCI) signaling or the media access control element (MAC CE) signaling.

[0215] Figure 8 It is a schematic structural diagram of a communication device provided in another embodiment of the present application. Figure 8 The shown communication device 800 may correspond to the second communication device described above, for example, it may be Figure 1 or Figure 2 a specific example of the network device 110 in. The communication device 800 includes: a processor 802. In an embodiment of the present application, the processor 802 is used to control and manage the actions of the second communication device, for example, the network device. For example, the processor 802 is used to support the second communication device, such as the network device, to execute the foregoing embodiments Figure 3 or Figure 4The method, operation, or function shown. Optionally, the communication device 800 may further include: a memory 801 and a communication interface 803; the processor 802, the communication interface 803, and the memory 801 may be connected to each other or connected to each other through a bus 804. Among them, the communication interface 803 is used to support the second communication device, such as a network device, to communicate, and the memory 801 is used to store the program code and data of the second communication device, such as a network device. The processor 802 calls the code stored in the memory 801 for control and management. The memory 801 may or may not be coupled to the processor. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be electrical, mechanical, or other forms, and is used for information interaction between devices, units, or modules.

[0216] Among them, the processor 802 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the present application. The processor may also be a combination that implements a computing function, such as a combination including one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication interface 803 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces. The bus 804 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, Figure 8 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0217] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0218] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0219] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, 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 displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0220] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0221] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0222] In the method provided by the embodiments of the present application, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium (such as an SSD), etc.

[0223] In the embodiments of the present application, on the premise of no logical contradiction, the embodiments may refer to each other. For example, the methods and / or terms between method embodiments may refer to each other, for example, the functions and / or terms between device embodiments may refer to each other, and for example, the functions and / or terms between device embodiments and method embodiments may refer to each other.

[0224] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wireless network communication method, characterized in that, Including: The first communication device determines first quasi - co - location (QCL) information of a target signal, and the first QCL information is configured for the first communication device by the second communication device; When the first QCL information becomes invalid because the second communication device turns off the transmit beam corresponding to the reference signal resource index in the first QCL information and / or the transmit beam for transmitting the target signal indicated by the first QCL information, the first communication device receives the target signal according to second QCL information.

2. The method according to claim 1, characterized in that, The second QCL information is pre - defined.

3. The method according to claim 2, wherein The target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: The index of the first synchronization signal block (SSB) received by the first communication device; or, The reference signal resource index in the first measurement result of the first communication device.

4. The method according to claim 2, wherein The target signal is a physical downlink control channel (PDCCH) or a semi - persistent scheduling channel state information reference signal, and the second QCL information includes any one of the following information: A QCL information other than the first QCL information in the candidate QCL information set configured for the first communication device by the second communication device, where the candidate QCL information set includes the first QCL information; Or, The index of the first synchronization signal block (SSB) received by the first communication device; or, The reference signal resource index in the first measurement result of the first communication device.

5. The method according to claim 3 or 4, characterized in that, The first synchronization signal block (SSB) is the synchronization signal block associated with the physical random access channel (PRACH) sent by the first communication device, or the synchronization signal block reported by the first communication device to the second communication device.

6. The method according to claim 5, wherein When the first synchronization signal block (SSB) is the synchronization signal block associated with the physical random access channel (PRACH) sent by the first communication device, the first synchronization signal block (SSB) is the synchronization signal block associated with the most recent physical random access channel (PRACH) sent by the first communication device.

7. The method according to claim 3 or 4, characterized in that, The first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the first communication device.

8. The method according to any one of claims 1 to 4, characterized in that Also including: When the first communication device receives indication information sent by the second communication device, the first communication device determines that the first QCL information is invalid, where the indication information is used to indicate that the first QCL information is invalid and / or is used to indicate the second QCL information.

9. The method according to claim 8, characterized in that The indication information is carried in the downlink control information (DCI).

10. The method according to any one of claims 2 to 4, characterized in that, The first QCL information or the second QCL information is configured by any of the following methods: Radio resource control (RRC) signaling; or, RRC signaling and medium access control element (MAC CE) signaling; or, RRC signaling and downlink control information (DCI) signaling.

11. The method according to claim 1, wherein Before the first communication device receives the signal according to the second QCL information when the first QCL information is invalid, it further includes: The first communication device receives the second QCL information sent by the second communication device.

12. The method according to claim 11, wherein, The second QCL information is carried in a downlink control information DCI signaling or a media access control element MAC CE signaling.

13. A wireless network communication method, characterized in that, Including: The second communication device configures the first quasi-co-location QCL information of the target signal for the first communication device; When the first QCL information fails because the second communication device turns off the transmission beam corresponding to the reference signal resource index in the first QCL information and / or the transmission beam for transmitting the target signal indicated by the first QCL information, the second communication device instructs the first communication device to receive the target signal according to the second QCL information.

14. The method according to claim 13, wherein The second QCL information is pre-defined.

15. The method according to claim 14, characterized in that, The target signal is a periodic channel state information reference signal, and the second QCL information includes any one of the following information: The index of the first synchronization signal block SSB received by the first communication device; or, The reference signal resource index in the first measurement result of the first communication device.

16. The method according to claim 14, characterized in that, The target signal is a physical downlink control channel PDCCH or a semi-persistent scheduling channel state information reference signal, and the second QCL information includes any one of the following information: A QCL information other than the first QCL information in the candidate QCL information set configured by the second communication device for the first communication device, where the candidate QCL information set includes the first QCL information; Or, The index of the first synchronization signal block SSB received by the first communication device; or, The index of the reference signal in the first measurement result of the first communication device.

17. The method according to claim 15 or 16, characterized in that The first synchronization signal block SSB is the synchronization signal block associated with the physical random access channel PRACH sent by the first communication device, or the synchronization signal block reported by the first communication device to the second communication device.

18. The method according to claim 17, wherein When the first synchronization signal block SSB is the synchronization signal block associated with the physical random access channel PRACH sent by the first communication device, the first synchronization signal block SSB is the synchronization signal block associated with the physical random access channel PRACH sent by the first communication device most recently.

19. The method according to claim 15 or 16, characterized in that The first measurement result is the measurement result of the channel quality measurement for the first reference signal resource set, or the measurement result corresponding to the preset reference signal resource index in the channel quality measurement results reported by the first communication device.

20. The method according to any one of claims 13 to 16, characterized in that, The second communication device instructs the first communication device of the second QCL information, including: The second communication device sends indication information to the first communication device, and the indication information is used to indicate the failure of the first QCL information and / or to indicate the second QCL information.

21. The method according to claim 20, wherein The indication information is carried in the downlink control information DCI.

22. The method according to any one of claims 14 to 16, characterized in that, The first QCL information or the second QCL information is configured by any of the following methods: Radio resource control RRC signaling; or, RRC signaling and media access control element MAC CE signaling; or, RRC signaling and downlink control information DCI signaling.

23. The method according to claim 13, wherein The second communication device indicates second QCL information to the first communication device, including: The second communication device sends the second QCL information to the first communication device.

24. The method according to claim 23, wherein The second QCL information is carried in a downlink control information (DCI) signaling or a medium access control element (MAC CE) signaling.

25. A communication device, characterized in that, Comprising a processor and a memory, the memory stores instructions, and the processor is configured to call and execute the instructions from the memory, and the instructions are configured to execute the method according to any one of claims 1 to 12.

26. A communication device, characterized in that, Comprising a processor and a memory, the memory stores instructions, and the processor is configured to call and execute the instructions from the memory, and the instructions are configured to execute the method according to any one of claims 13 to 24.

27. A computer-readable storage medium, characterized in that, Stored with computer-executable instructions, the computer-executable instructions are configured to execute the method according to any one of claims 1 to 24.

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