Communication method and related device

Abstract

A communication method and a related device, which are used for improving the accuracy of a terminal device implementing beam failure detection (BFD) on the basis of a beam failure instance (BFI), thereby reducing unnecessary beam failure recovery (BFR) procedures caused by the low accuracy of BFD, and reducing overheads to improve communication efficiency. In this method, first configuration information received by a terminal device is used for configuring resources of a first reference signal (RS) for BFD, the resources of the first RS comprising a time domain resource for downlink transmission only and a time domain resource for uplink transmission and downlink transmission; and thereafter, the terminal device may determine a BFI on the basis of first information, the first information comprising first signal quality information determined on the basis of the first RS carried by the time domain resource for downlink transmission only among the resources of the first RS, and / or second signal quality information determined on the basis of the first RS carried by the time domain resource for uplink transmission and downlink transmission among the resources of the first RS.

Description

A communication method and related equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on November 3, 2023, with application number 202311460946.1 and application name “A Communication Method and Related Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a communication method and related equipment. Background Art

[0003] In a communication system based on multiple-input, multiple-output (MIMO) technology, the antenna array of a network device can transmit and receive communication beams in multiple beam directions. When a communication beam is directed toward a terminal device, the communication quality between the network device and the terminal device is better. The process of selecting multiple beam directions by the network device is called beam training or beam scanning.

[0004] Currently, when a network device selects multiple beam directions, it can send configuration information for one or more reference signals. Different reference signals can correspond to different communication beams. Accordingly, a terminal device can receive the one or more reference signals based on the configuration information, perform measurements based on the received reference signals, and send the measurement results. The measurement results can be used by the network device in the process of selecting multiple beam directions. Generally, current communication systems generally default to network devices communicating in a half-duplex mode. Therefore, the above configuration information is configured based on the half-duplex mode.

[0005] However, in addition to communicating in half-duplex mode, network devices may also communicate in full-duplex mode. Accordingly, when the network device communicates in full-duplex mode, since the above configuration information is configured based on half-duplex mode, the reference signal sent by the network device based on the configuration information may be subject to different interference at different time units, thereby affecting the accuracy of the measurement results obtained by the terminal device based on the reference signal.

[0006] Summary of the Invention

[0007] The present application provides a communication method and related equipment for improving the accuracy of beam failure detection (BFD) implemented by a terminal device based on a beam failure event (BFI), thereby reducing unnecessary beam failure recovery (BFR) processes caused by the low accuracy of BFD, thereby reducing overhead and improving communication efficiency.

[0008] In a first aspect, the present application provides a communication method, which is executed by a terminal device (or terminal), or the method is executed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the terminal device functions. In the first aspect and its possible implementation, the method is described as being executed by a terminal device. In the method, the terminal device receives first configuration information, and the first configuration information is used to configure the resources of a first reference signal (RS), and the first RS is used for beam failure detection (BFD); the terminal device determines a beam failure event (BFI) based on the first information, and the first information is one of the following: first signal quality information and second signal quality information, the first signal quality information, and the second signal quality information; wherein the first signal quality information is determined based on the first RS carried by the time domain resources used only for downlink transmission in the resources of the first RS, and the second signal quality information is determined based on the first RS carried by the time domain resources used for uplink and downlink transmission in the resources of the first RS.

[0009] Based on the above technical solution, the first configuration information received by the terminal device configures the resources of the first RS for BFD, and the resources of the first RS include time domain resources used only for downlink transmission and time domain resources used for uplink and downlink transmission. Thereafter, the terminal device can determine the BFI based on the first information, where the first information includes first signal quality information determined by the first RS based on the time domain resources used only for downlink transmission in the resources of the first RS, and / or second signal quality information determined by the first RS based on the time domain resources used for uplink and downlink transmission in the resources of the first RS. Therefore, since the interference to the transmission of reference signals on different types of time domain resources is likely to be different (for example, in a time unit used only for downlink transmission, the signal that interferes with the terminal device is generally the downlink signal of other terminal devices; in a time unit used for uplink transmission and for downlink transmission, the signal that interferes with the terminal device includes not only the downlink signal of other terminal devices but also the uplink signal of other terminal devices), in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining BFI, which can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by the low accuracy of BFD, and can reduce overhead to improve communication efficiency.

[0010] It should be understood that time domain resources that can only be used for the same transmission direction at the same time are one type of time domain resources, and this type of time domain resources can be understood as half-duplex time domain resources. For example, time domain resources that can only be used for downlink transmission at the same time, or time domain resources that can only be used for uplink transmission at the same time. Time domain resources that can be used for different transmission directions at the same time are another type of time domain resources, and this type of time domain resources can be understood as full-duplex time domain resources. For example, time domain resources that can be used for both downlink transmission and uplink transmission at the same time. Half-duplex time domain resources and full-duplex time domain resources are different types of time domain resources.

[0011] It should be understood that the first configuration information received by the terminal device may come from the network device. In the process of communication between the terminal device and the network device, the network device may configure the time domain resource type for communication between the two by configuration, for example, configuring the time domain resource type for communication between the two as a time domain resource used only for downlink transmission, a time domain resource used for uplink and downlink transmission, a time domain resource used only for uplink transmission, or a flexible time domain resource, etc. Optionally, the network device may change the time domain resource type for communication between the two by reconfiguration. Optionally, the resource granularity of the time domain resource type configuration of the network device may be implemented in multiple ways, for example, the configured resource granularity may be a symbol, a time slot, a sub-time slot, a subframe, or a radio frame.

[0012] It should be understood that after the terminal device determines the BFI, the terminal device can indicate the BFI to the medium access control (MAC) layer, and when the number of BFIs recorded in the MAC layer is greater than or equal to a threshold, the terminal device can trigger the BFR process (for example, the terminal device executes one or more of sending a link recovery request (LRR), sending a MAC control element (CE) indicating BFR, performing random access, etc.). Optionally, the threshold can be pre-configured, or the threshold can be configured by the network device (for example, the threshold configured by the network device through the beam failure time maximum number (beamFailureInstanceMaxCount) information element).

[0013] It should be understood that the reference signals involved in this application may include channel state information reference signal (CSI-RS), synchronization signal / physical broadcast channel block (SS / PBCH block or SSB), etc.

[0014] In a possible implementation of the first aspect, when the first information is the first signal quality information and the second signal quality information, the terminal device determines the BFI based on the first information, including: the terminal device determines the BFI when the signal quality corresponding to the first signal quality information is lower than or equal to a first threshold and the signal quality corresponding to the second signal quality information is lower than or equal to a second threshold.

[0015] Based on the above technical solution, when a terminal device determines that the signal quality on time domain resources used only for downlink transmission is low, and the terminal device determines that the signal quality on time domain resources used for both uplink and downlink transmission is low, the terminal device determines the BFI. Thus, the terminal device determines whether BFI has occurred based on the signal quality information of the RS on both types of time domain resources, which can improve the accuracy of the terminal device's BFI determination and, in turn, improve the accuracy of BFD implementation based on the BFI.

[0016] Optionally, the first threshold and the second threshold are the same, or the first threshold and the second threshold are different. The first threshold and the second threshold may be pre-configured or configured by the network device, which is not limited here.

[0017] Optionally, the signal quality information can be implemented in multiple ways, such as one or more of block error rate (BLER), reference signal received power (RSRP), reference signal received quality (RSRQ), and received signal strength indicator (RSSI).

[0018] For example, when the signal quality information is BLER and the threshold value is a BLER threshold value (e.g., 0.1, 0.01, etc.), a larger BLER value indicates worse signal quality corresponding to the BLER, and conversely, a smaller BLER value indicates better signal quality corresponding to the BLER. Accordingly, if the signal quality corresponding to the signal quality information (e.g., the first signal quality information or the second signal quality information, or the third signal quality information or the fourth signal quality information mentioned below) is lower than or equal to the threshold value (e.g., the first threshold value, the second threshold value, etc.), it can be understood that the value of the signal quality information is greater than or equal to the threshold value. Conversely, if the signal quality corresponding to the signal quality information is higher than or equal to the threshold value, it can be understood that the value of the signal quality information is less than or equal to the threshold value.

[0019] For another example, when the signal quality information is RSRP and the value of the threshold is the RSRP threshold, the larger the RSRP value, the better the signal quality corresponding to the RSRP, and conversely, the smaller the RSRP value, the worse the signal quality corresponding to the RSRP. Accordingly, if the signal quality corresponding to the signal quality information (such as the first signal quality information or the second signal quality information, or the third signal quality information, the fourth signal quality information, etc. mentioned later) is lower than the threshold (such as the first threshold, the second threshold, etc.), it can be understood that the value of the signal quality information is less than the value of the threshold. Conversely, if the signal quality corresponding to the signal quality information is higher than or equal to the threshold, it can be understood that the value of the signal quality information is greater than or equal to the threshold.

[0020] In a possible implementation manner of the first aspect, the method further includes: when the first information is the first signal quality information, the terminal device determines not to receive the first RS on the time domain resources used for uplink transmission and downlink transmission.

[0021] Optionally, the terminal device determines not to receive the first RS on the time domain resources used for uplink transmission and downlink transmission, which can be replaced by the terminal device not expecting to receive the first RS on the time domain resources used for uplink transmission and downlink transmission, and / or the terminal device expects to receive the first RS on the time domain resources used only for downlink transmission.

[0022] Based on the above technical solution, the first information is used as one of the bases for the terminal device to determine the BFI. When the first information is the first signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can determine in a pre-configured manner not to receive the first RS on the time domain resources used for uplink and downlink transmission. For example, when the terminal device determines that the signal quality on the time domain resources used only for downlink transmission is low, the terminal device determines the BFI. Thus, the terminal device can determine whether BFI occurs by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the terminal device in determining the BFI while also reducing the overhead and power consumption of the terminal device.

[0023] In a possible implementation manner of the first aspect, when the first information is the first signal quality information, the method further includes: the terminal device receives first indication information, and the first indication information indicates receiving the first RS on a time domain resource used only for downlink transmission.

[0024] Based on the above technical solution, the first information is used as one of the bases for the terminal device to determine the BFI. When the first information is the first signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can also receive the first indication information indicating that the first RS is received on the time domain resources used only for downlink transmission, so that the terminal device determines not to receive the first RS on the time domain resources used for uplink and downlink transmission based on the first indication information. Thus, the terminal device can determine whether BFI occurs based on the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the terminal device in determining the BFI while reducing the overhead and power consumption of the terminal device.

[0025] In a possible implementation manner of the first aspect, the method further includes: when the first information is the second signal quality information, the terminal device determines not to receive the first RS on a time domain resource used only for downlink transmission.

[0026] Optionally, the terminal device determines not to receive the first RS on the time domain resources used only for downlink transmission, which can be replaced by the terminal device not expecting to receive the first RS on the time domain resources used only for downlink transmission, and / or the terminal device expecting to receive the first RS on the time domain resources used for uplink and downlink transmission.

[0027] Based on the above technical solution, the first information is used as one of the bases for the terminal device to determine the BFI. When the first information is the second signal quality information corresponding to the time domain resources used for uplink transmission and downlink transmission, the terminal device can determine in a pre-configured manner not to receive the first RS on the time domain resources used only for downlink transmission. For example, when the signal quality of the terminal device on the time domain resources used for uplink transmission and downlink transmission is low, the terminal device determines the BFI. Thus, the terminal device can determine whether BFI occurs by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink transmission and downlink transmission), which can improve the accuracy of the terminal device in determining the BFI while also reducing the overhead and power consumption of the terminal device.

[0028] In a possible implementation of the first aspect, when the first information is the second signal quality information, the method further includes: the terminal device receives second indication information, and the second indication information indicates receiving the first RS on the time domain resources used for uplink transmission and downlink transmission.

[0029] Based on the above technical solution, the first information is used as one of the bases for the terminal device to determine the BFI. When the first information is the second signal quality information corresponding to the time domain resources used for uplink and downlink transmission, the terminal device can also receive second indication information indicating that the first RS should be received on the time domain resources used for uplink and downlink transmission, so that the terminal device determines not to receive the first RS on the time domain resources used only for downlink transmission based on the second indication information. Thus, the terminal device can determine whether BFI occurs based on the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink and downlink transmission), which can reduce the overhead and power consumption of the terminal device.

[0030] In a possible implementation of the first aspect, the method further includes: the terminal device receives third indication information, and the third indication information is used to indicate that the first information is one of the following: the first signal quality information and the second signal quality information, the first signal quality information, and the second signal quality information.

[0031] Based on the above technical solution, the terminal device can also receive third indication information, so that the terminal device can determine that the first information is one of the above items based on the third indication information. Therefore, through the third indication information, the terminal device can clearly understand the basis for determining the BFI, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources and use this signal quality information as the basis for determining the BFI. This can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by the low accuracy of BFD, reducing overhead and improving communication efficiency.

[0032] Optionally, the terminal device determines that the first information is one of the above items through preconfiguration.

[0033] In a possible implementation of the first aspect, the method further includes: the terminal device receives second configuration information, the second configuration information is used to configure resources of a second RS, and the second RS is used for candidate beam detection (CBD); the method also includes: the terminal device determines the RS for BFR from the second RS based on the second information, the second information being one of the following: third signal quality information and fourth signal quality information; the third signal quality information; the fourth signal quality information; wherein the third signal quality information is determined based on the second RS carrying time domain resources used only for downlink transmission in the resources of the second RS, and the fourth signal quality information is determined based on the second RS carrying time domain resources used for uplink and downlink transmission in the resources of the second RS.

[0034] Based on the above technical solution, the second configuration information received by the terminal device configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink and downlink transmission. Thereafter, the terminal device can determine the RS for BFR based on the second information, and the second information includes determining third signal quality information based on the second RS carried by the time domain resources used only for downlink transmission in the resources of the second RS, and / or determining fourth signal quality information based on the second RS carried by the time domain resources used for uplink and downlink transmission in the resources of the second RS. Therefore, since the interference experienced by the transmission of reference signals on different types of time domain resources is likely to be different, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the RS for BFR, which can improve the accuracy of the RS determined for BFR, thereby reducing unnecessary BFR processes, and reducing overhead to improve communication efficiency.

[0035] Optionally, the first configuration information and the second configuration information may be carried in the same message or in different messages, which is not limited here.

[0036] In a possible implementation of the first aspect, when the second information is the third signal quality information and the fourth signal quality information, the terminal device determines the RS used for BFR from the second RS based on the second information, including: the terminal device determines the RS corresponding to the signal quality information with better signal quality between the third signal quality information and the fourth signal quality information as the RS used for BFR.

[0037] Based on the above technical solution, the terminal device determines the RS corresponding to the signal quality information with better signal quality among the second RS on the time domain resources used only for downlink transmission and the second RS on the time domain resources used for uplink and downlink transmission as the RS for BFR. Thus, the terminal device determines the RS for BFR based on the signal quality information of the RS on the two types of time domain resources, and can determine the RS for BFR with better communication quality on as many time domain resources as possible, thereby improving the communication quality of subsequent communications based on this RS.

[0038] In a possible implementation manner of the first aspect, the method further includes: when the second information is the third signal quality information, the terminal device determines not to receive the second RS on the time domain resources used for uplink transmission and downlink transmission.

[0039] Optionally, the terminal device determines not to receive the second RS on the time domain resources used for uplink transmission and downlink transmission, which can be replaced by the terminal device not expecting to receive the second RS on the time domain resources used for uplink transmission and downlink transmission, and / or the terminal device expects to receive the second RS on the time domain resources used only for downlink transmission.

[0040] Based on the above technical solution, the second information is used as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can determine in a pre-configured manner not to receive the second RS on the time domain resources used for uplink and downlink transmission. For example, the terminal device determines the RS for BFR from the second RS transmitted on the time domain resources used only for downlink transmission. Thus, the terminal device can determine the RS for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0041] In a possible implementation of the first aspect, when the second information is the third signal quality information, the method further includes: the terminal device receives fourth indication information, and the fourth indication information is used to indicate receiving the second RS on a time domain resource used only for downlink transmission.

[0042] Based on the above technical solution, the second information is used as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can also receive fourth indication information indicating that the second RS is received on the time domain resources used only for downlink transmission, so that the terminal device determines not to receive the second RS on the time domain resources used for uplink and downlink transmission based on the fourth indication information. Thus, the terminal device can determine the RS for BFR based on the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0043] In a possible implementation manner of the first aspect, the method further includes: when the second information is the fourth signal quality information, the terminal device determines not to receive the second RS on a time domain resource used only for downlink transmission.

[0044] Optionally, the terminal device determines not to receive the second RS on the time domain resources used only for downlink transmission, which can be replaced by the terminal device not expecting to receive the second RS on the time domain resources used only for downlink transmission, and / or the terminal device expecting to receive the second RS on the time domain resources used for uplink and downlink transmission.

[0045] Based on the above technical solution, the second information is used as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used for uplink transmission and downlink transmission, the terminal device can determine in a pre-configured manner not to receive the second RS on the time domain resources used only for downlink transmission. For example, the terminal device determines the RS for BFR from the second RS transmitted on the time domain resources used for uplink transmission and downlink transmission. Thus, the terminal device can determine the RS for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink transmission and downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0046] In a possible implementation of the first aspect, when the second information is the fourth signal quality information, the method further includes: the terminal device receives fifth indication information, and the fifth indication information is used to indicate receiving the second RS on the time domain resources used for uplink transmission and downlink transmission.

[0047] Based on the above technical solution, the second information is used as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used for uplink and downlink transmission, the terminal device can also receive fifth indication information indicating that the second RS is received on the time domain resources used for uplink and downlink transmission, so that the terminal device determines not to receive the second RS on the time domain resources used only for downlink transmission based on the fifth indication information. Thus, the terminal device can determine the RS for BFR based on the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink and downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0048] In a possible implementation of the first aspect, the method further includes: the terminal device receives sixth indication information, and the sixth indication information is used to indicate that the second information is one of the following: the third signal quality information and the fourth signal quality information; the third signal quality information; the fourth signal quality information.

[0049] Based on the above technical solution, the terminal device may also receive sixth indication information, enabling the terminal device to determine, based on the sixth indication information, that the second information is one of the above items. Thus, the sixth indication information enables the terminal device to clearly identify the basis for determining the RS used for BFR, enabling the terminal device to determine the signal quality information of the reference signal on the same type of time domain resources and use the signal quality information as the basis for determining the RS used for BFR. This can improve the accuracy of the determined RS used for BFR, thereby reducing unnecessary BFR processes, lowering overhead, and improving communication efficiency.

[0050] In a possible implementation of the first aspect, after the terminal device determines the RS for BFR from the second RS based on the second information, the method further includes: the terminal device sends seventh indication information and eighth indication information, the seventh indication information indicating the RS for BFR; wherein the eighth indication information indicates that the RS for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

[0051] Based on the above technical solution, after the terminal device determines the RS for BFR from the second RS based on the second information, the terminal device may also send seventh indication information indicating the RS for BFR and eighth indication information indicating the type of time domain resource corresponding to the RS for BFR. Thus, the network device can communicate with the terminal device using the BFR RS in the corresponding type of time unit based on the seventh and eighth indication information to improve communication quality.

[0052] The second aspect of the present application provides a communication method, which is performed by a network device, or the method is performed by some components in the network device (such as a processor, chip or chip system, etc.), or the method can also be implemented by a logic module or software that can implement all or part of the network device functions. In the second aspect and its possible implementation, the method is described as being performed by a network device. In this method, the network device sends first configuration information, and the first configuration information is used to configure the resources of a first reference signal RS, and the first RS is used for BFD.

[0053] In a possible implementation of the second aspect, the method also includes: the network device determines not to send the first RS on the time domain resources used for uplink transmission and downlink transmission, and / or the network device sends first indication information, which indicates that the first RS is received on the time domain resources used only for downlink transmission.

[0054] It should be understood that after the terminal device receives the first indication information sent by the network device, the terminal device can receive the first RS on the time domain resources used only for downlink transmission based on the first indication information. The first indication information can also be replaced by other implementations. For example, the first indication information sent by the network device can instruct the network device to send the first RS on the time domain resources used only for downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used only for downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used only for downlink transmission, and instruct the first RS sent by the network device not to be carried on the time domain resources used for uplink and downlink transmission.

[0055] Based on the above technical solution, the first configuration information sent by the network device configures the resources of the first RS for BFD, and the resources of the first RS include time domain resources used only for downlink transmission, and time domain resources used for uplink transmission and downlink transmission. Thereafter, the network device may determine not to send the first RS on the time domain resources used for uplink transmission and downlink transmission, and / or the network device sends a first indication information indicating that the first RS is received on the time domain resources used only for downlink transmission. In other words, when the signal quality information corresponding to the time domain resources used only for downlink transmission is used as the basis for the terminal device to determine BFI, the network device can be pre-configured or indicated by the first indication information, so that the terminal device can determine whether BFI occurs through the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission). This can improve the accuracy of the terminal device in determining BFI while also reducing the overhead and power consumption of the terminal device.

[0056] In a possible implementation of the second aspect, the method also includes: the network device determines not to send the first RS on the time domain resources used only for downlink transmission, and / or the network device sends second indication information, wherein the second indication information indicates to receive the first RS on the time domain resources used for uplink transmission and downlink transmission.

[0057] It should be understood that after the terminal device receives the second indication information sent by the network device, the terminal device can receive the first RS on the time domain resources used for uplink transmission and downlink transmission based on the second indication information. The second indication information can also be replaced by other implementations. For example, the second indication information sent by the network device can instruct the network device to send the first RS on the time domain resources used for uplink transmission and downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission, and instruct the first RS sent by the network device not to be carried on the time domain resources used only for downlink transmission.

[0058] Based on the above technical solution, the first configuration information sent by the network device configures the resources of the first RS for BFD, and the resources of the first RS include time domain resources used only for downlink transmission and time domain resources used for uplink transmission and downlink transmission. Thereafter, the network device determines not to send the first RS on the time domain resources used only for downlink transmission, and / or the network device sends second indication information, and the second indication information indicates to receive the first RS on the time domain resources used for uplink transmission and downlink transmission. In other words, when the second signal quality information corresponding to the time domain resources used for uplink transmission and downlink transmission is used as the basis for the terminal device to determine BFI, the network device can be pre-configured or indicated by the second indication information, so that the terminal device can determine whether BFI occurs through the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink transmission and downlink transmission). This can improve the accuracy of the terminal device in determining BFI while also reducing the overhead and power consumption of the terminal device.

[0059] In a possible implementation of the second aspect, the method also includes: the network device sends third indication information, and the third indication information is used to indicate that the first information is one of the following: the first signal quality information and the second signal quality information; the first signal quality information; the second signal quality information; wherein, the first information is used to determine a beam failure event BFI, the first signal quality information is determined based on the first RS that carries time domain resources used only for downlink transmission in the resources of the first RS, and the second signal quality information is determined based on the first RS that carries time domain resources used for uplink and downlink transmission in the resources of the first RS.

[0060] Based on the above technical solution, the first configuration information sent by the network device configures the resources of the first RS for BFD, and the resources of the first RS include time domain resources used only for downlink transmission and time domain resources used for uplink transmission and downlink transmission. Thereafter, the network device can send a third indication information so that the terminal device can determine that the first information is one of the above items based on the third indication information. Thus, the third indication information enables the terminal device to clarify the basis for determining BFI, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining BFI, which can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by the low accuracy of BFD, and reducing overhead to improve communication efficiency.

[0061] A third aspect of the present application provides a communication method, which is performed by a network device, or the method is performed by some components in the network device (such as a processor, chip or chip system, etc.), or the method can also be implemented by a logic module or software that can implement all or part of the network device functions. In the third aspect and its possible implementation, the method is described as being performed by a network device. In this method, the network device sends second configuration information, and the second configuration information is used to configure the resources of a second reference signal RS, and the second RS is used for CBD.

[0062] In a possible implementation of the third aspect, the method also includes: the network device determines not to send the second RS on the time domain resources used for uplink transmission and downlink transmission, and / or the network device sends fourth indication information, which is used to indicate that the second RS is received on the time domain resources used only for downlink transmission.

[0063] It should be understood that after the terminal device receives the fourth indication information sent by the network device, the terminal device can receive the second RS on the time domain resources used only for downlink transmission based on the fourth indication information. The fourth indication information can also be replaced by other implementations. For example, the fourth indication information sent by the network device can instruct the network device to send the second RS on the time domain resources used only for downlink transmission; for another example, the fourth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used only for downlink transmission; for another example, the fourth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used only for downlink transmission, and instruct the second RS sent by the network device not to be carried on the time domain resources used for uplink and downlink transmission.

[0064] Based on the above technical solution, the second configuration information sent by the network device configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink transmission and downlink transmission. Thereafter, the network device determines not to send the second RS on the time domain resources used for uplink transmission and downlink transmission, and / or the network device sends fourth indication information, and the fourth indication information is used to indicate that the second RS is received on the time domain resources used only for downlink transmission. In other words, when the signal quality information corresponding to the time domain resources used only for downlink transmission is used as the basis for the terminal device to determine the RS for BFR, the network device can enable the terminal device to determine the signal quality information of the reference signal on the same type of time domain resources (i.e., time domain resources used only for downlink transmission) through preconfiguration or by indicating through the fourth indication information, and use the signal quality information as the basis for determining the RS for BFR, which can improve the accuracy of the RS determined for BFR, thereby reducing unnecessary BFR processes, and reducing overhead to improve communication efficiency.

[0065] In a possible implementation of the third aspect, the method also includes: the network device determines not to send the second RS on the time domain resources used only for downlink transmission, and / or the network device sends fifth indication information, which is used to indicate receiving the second RS on the time domain resources used for uplink transmission and downlink transmission.

[0066] It should be understood that after the terminal device receives the fifth indication information sent by the network device, the terminal device can receive the second RS on the time domain resources used for uplink transmission and downlink transmission based on the fifth indication information. The fifth indication information can also be replaced by other implementations. For example, the fifth indication information sent by the network device can instruct the network device to send the second RS on the time domain resources used for uplink transmission and downlink transmission; for another example, the fifth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission; for another example, the fifth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission, and instruct the second RS sent by the network device not to be carried on the time domain resources used only for downlink transmission.

[0067] Based on the above technical solution, the second configuration information sent by the network device configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink and downlink transmission. Thereafter, the network device determines not to send the second RS on the time domain resources used only for downlink transmission, and / or the network device sends fifth indication information, the fifth indication information being used to indicate that the second RS is received on the time domain resources used for uplink and downlink transmission. In other words, when the signal quality information corresponding to the time domain resources used for uplink and downlink transmission is used as the basis for the terminal device to determine the RS for BFR, the network device can, through pre-configuration or indication through the fifth indication information, enable the terminal device to determine the signal quality information of the reference signal on the same type of time domain resources (i.e., the time domain resources used for uplink and downlink transmission), and use the signal quality information as the basis for determining the RS for BFR. This can improve the accuracy of the RS determined for BFR, thereby reducing unnecessary BFR processes, reducing overhead, and improving communication efficiency.

[0068] In a possible implementation of the third aspect, the method also includes: the network device sends sixth indication information, where the sixth indication information is used to indicate that the second information is one of the following: third signal quality information and fourth signal quality information; the third signal quality information; the fourth signal quality information; wherein the second information is used to determine the RS for beam fault recovery BFR from the second RS, the third signal quality information is determined based on the second RS carrying the time domain resources used only for downlink transmission in the resources of the second RS, and the fourth signal quality information is determined based on the second RS carrying the time domain resources used for uplink and downlink transmission in the resources of the second RS.

[0069] Based on the above technical solution, the second configuration information sent by the network device configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink transmission and downlink transmission. Thereafter, the network device can send a sixth indication information so that the terminal device can determine that the second information is one of the above items based on the sixth indication information. Thus, the sixth indication information enables the terminal device to clearly determine the basis for determining the RS for BFR, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the RS for BFR, which can improve the accuracy of the determined RS for BFR, thereby reducing unnecessary BFR processes and reducing overhead to improve communication efficiency.

[0070] In a possible implementation of the third aspect, the method further includes: the network device sends second configuration information, where the second configuration information is used to configure resources of a second reference signal RS, and the second RS is used for candidate beam detection CBD; the network device receives seventh indication information and eighth indication information, where the seventh indication information indicates the RS used for BFR, and the RS used for BFR is determined based on signal quality information of the second RS; wherein the eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

[0071] Based on the above technical solution, the second configuration information sent by the network device configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink and downlink transmission. Thereafter, after the terminal device determines the RS for BFR from the second RS, the terminal device may also send seventh indication information indicating the RS for BFR, and eighth indication information for indicating the type of time domain resources corresponding to the RS for BFR. Thus, the network device can use the BFR RS on the corresponding type of time unit based on the seventh indication information and the eighth indication information to communicate with the terminal device to improve communication quality.

[0072] The fourth aspect of the present application provides a communication method, which is executed by a terminal device (or terminal), or the method is executed by some components in the terminal device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the terminal device functions. In the fourth aspect and its possible implementation, the method is described as being executed by a terminal device. In this method, the terminal device receives third configuration information and fourth configuration information, the third configuration information is used to configure the resources of the third reference signal RS, and the fourth configuration information is used to configure the resources of the fourth RS, and the third RS and the fourth RS are both used for beam failure detection BFD; wherein the resources of the third RS include time domain resources used only for downlink transmission, and the resources of the fourth RS include time domain resources used for uplink transmission and downlink transmission; the terminal device determines the beam failure event BFI based on the signal quality information of the third RS and the signal quality information of the fourth RS.

[0073] Based on the above technical solution, the third configuration information received by the terminal device configures resources for a third RS for BFD, and the resources for the third RS include time domain resources used only for downlink transmission. The fourth configuration information received by the terminal device configures resources for a fourth RS for BFD, and the resources for the fourth RS include time domain resources used for both uplink and downlink transmission. The terminal device can subsequently determine the BFI based on the signal quality information of the third RS and the signal quality information of the fourth RS. In other words, the network device can configure reference signals for BFD separately for different types of time domain resources. Therefore, because the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in the above technical solution, the terminal device can determine the signal quality information of the reference signals on the same type of time domain resources and use this signal quality information as the basis for determining the BFI. This can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by low BFD accuracy, and can reduce overhead to improve communication efficiency.

[0074] Optionally, the third configuration information and the fourth configuration information may be carried in the same message or in different messages, which is not limited here.

[0075] In a possible implementation of the fourth aspect, the BFI is one of the following: a first BFI, the first BFI including a BFI determined based on the signal quality information of the third RS and a BFI determined based on the signal quality information of the fourth RS; a second BFI, the second BFI being a BFI determined based on the signal quality information of the third RS and the signal quality information of the fourth RS.

[0076] Based on the above technical solution, the BFI determined by the terminal device may include a first BFI, that is, the terminal device can respectively determine the corresponding BFIs on the two types of time domain resources based on the reference signals on the two types of time domain resources, so that the terminal device determines the BFI on the corresponding type of time domain resources based on the third configuration information and the fourth configuration information respectively. Since the terminal device independently determines the BFI on the two types of time domain resources, the accuracy of BFD implemented based on the BFI can be further improved.

[0077] In addition, the BFI determined by the terminal device may include a second BFI, that is, the terminal device may jointly determine the BFI based on the signal quality information of the reference signals on the two types of time domain resources. In other words, the terminal device jointly determines the BFI based on the third configuration information and the fourth configuration information, which can improve the accuracy of BFD based on the BFI. At the same time, because the BFI is only determined when the signal quality information of the third RS and the signal quality information of the fourth RS are both poor, the occurrence of the BFR process can be minimized, and the overhead can be further reduced to improve communication efficiency.

[0078] In a possible implementation of the fourth aspect, the resources of the third RS do not include time domain resources used for uplink transmission and downlink transmission; or, the method also includes: the terminal device determines not to receive the third RS on the time domain resources used for uplink transmission and downlink transmission.

[0079] Based on the above technical solution, for the resources of the third RS configured by the third configuration information, the terminal device may not receive the third RS on time domain resources used for uplink and downlink transmissions. In other words, the terminal device may receive the third RS on time domain resources used only for downlink transmission. Thus, the terminal device can determine whether BFI occurs based on the signal quality information of the RS on the same type of time domain resources (i.e., time domain resources used only for downlink transmission), which can reduce the terminal device's overhead and power consumption.

[0080] In a possible implementation of the fourth aspect, the resources of the fourth RS do not include time domain resources used only for downlink transmission, or the method further includes: the terminal device determines not to receive the fourth RS on time domain resources used only for downlink transmission.

[0081] Based on the above technical solution, for the resources of the fourth RS configured by the fourth configuration information, the terminal device may not receive the fourth RS on time domain resources used only for downlink transmission. In other words, the terminal device may receive the fourth RS on time domain resources used for both uplink and downlink transmission. Thus, the terminal device can determine whether BFI occurs based on the signal quality information of the RS on the same type of time domain resources (i.e., time domain resources used for uplink and downlink transmission), thereby reducing the overhead and power consumption of the terminal device.

[0082] In a possible implementation of the fourth aspect, the method also includes: the terminal device receives fifth configuration information and sixth configuration information, the fifth configuration information is used to configure the resources of the fifth RS, and the sixth configuration information is used to configure the resources of the sixth RS, and the fifth RS and the sixth RS are both used for CBD; wherein, the resources of the fifth RS include time domain resources used only for downlink transmission, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission; the terminal device determines the RS used for BFR based on the signal quality information of the fifth RS and the signal quality information of the sixth RS.

[0083] Based on the above technical solution, the fifth configuration information received by the terminal device configures the resources of the fifth RS for CBD, and the resources of the fifth RS include time domain resources used only for downlink transmission. The sixth configuration information received by the terminal device configures the resources of the sixth RS for CBD, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission. The terminal device can subsequently determine the BFI based on the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the network device can configure reference signals for CBD separately for different types of time domain resources. Therefore, since the interference to the transmission of reference signals on different types of time domain resources is likely to be different, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the RS for BFR, which can improve the accuracy of the determined RS for BFR, thereby reducing unnecessary BFR processes and reducing overhead to improve communication efficiency.

[0084] Optionally, the fifth configuration information and the sixth configuration information may be carried in the same message or in different messages, which is not limited here.

[0085] In a possible implementation of the fourth aspect, the RS used for BFR includes one of the following: an RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and an RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS; an RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS and the signal quality information of the sixth RS.

[0086] Based on the above technical solution, the RS for BFR determined by the terminal device may include the RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS, that is, the terminal device can respectively determine the RS for BFR corresponding to the two types of time domain resources based on the reference signals on the two types of time domain resources, so that the terminal device determines the RS for BFR on the corresponding type of time domain resources based on the fifth configuration information and the sixth configuration information, respectively. Since the terminal device independently determines the RS for BFR on the two types of time domain resources, the accuracy of the determined RS for BFR can be further improved.

[0087] In addition, the RS for BFR determined by the terminal device includes the RS corresponding to the signal quality information with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the terminal device jointly determines the RS for BFR based on the fifth configuration information and the sixth configuration information, which can improve the accuracy of the determined RS for BFR. At the same time, because the terminal device determines the RS with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS as the RS for BFR, it can also use the RS with better signal quality as the RS for BFR as much as possible, thereby improving the communication quality of subsequent communications based on the RS for BFR.

[0088] In a possible implementation of the fourth aspect, the resources of the fifth RS do not include time domain resources used for uplink transmission and downlink transmission; or, the method also includes: the terminal device determines not to receive the fifth RS on the time domain resources used for uplink transmission and downlink transmission.

[0089] Based on the above technical solution, for the resources of the fifth RS configured by the fifth configuration information, the terminal device may not receive the fifth RS on the time domain resources used for uplink and downlink transmission. In other words, the terminal device may receive the fifth RS on the time domain resources used only for downlink transmission. Thus, the terminal device can determine the RS used for BFR based on the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can reduce the overhead and power consumption of the terminal device.

[0090] In a possible implementation of the fourth aspect, the resources of the sixth RS do not include time domain resources used only for downlink transmission; or, the method further includes: the terminal device determines not to receive the sixth RS on time domain resources used only for downlink transmission.

[0091] Based on the above technical solution, for the resources of the sixth RS configured by the sixth configuration information, the terminal device may not receive the sixth RS on time domain resources used only for downlink transmission. In other words, the terminal device may receive the sixth RS on time domain resources used for both uplink and downlink transmission. Thus, the terminal device can determine the RS used for BFR based on the signal quality information of the RS on the same type of time domain resources (i.e., time domain resources used for uplink and downlink transmission), which can reduce the overhead and power consumption of the terminal device.

[0092] In a possible implementation of the fourth aspect, the method also includes: the terminal device sends seventh indication information and eighth indication information, the seventh indication information indicating the RS used for BFR; wherein the eighth indication information indicates that the RS used for BFR is an RS carried on time domain resources used only for downlink transmission, or the eighth indication information indicates that the RS used for BFR is an RS carried on time domain resources used for uplink transmission and downlink transmission.

[0093] Based on the above technical solution, after the terminal device determines the RS for BFR, the terminal device may also send seventh indication information indicating the RS for BFR and eighth indication information indicating the type of time domain resource corresponding to the RS for BFR. Thus, based on the seventh and eighth indication information, the network device may communicate with the terminal device using the BFR RS in the corresponding type of time unit, thereby improving communication quality.

[0094] The fifth aspect of the present application provides a communication method, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the fifth aspect and its possible implementation, the method is described as being executed by a network device. In this method, the network device determines third configuration information, and the third configuration information is used to configure the resources of a third reference signal RS, and the third RS is used for beam failure detection BFD; wherein the resources of the third RS include time domain resources used only for downlink transmission; the network device sends the third configuration information; wherein the resources of the third RS do not include time domain resources used for uplink transmission and for downlink transmission, or, it is determined not to send the third RS on the time domain resources used for uplink transmission and downlink transmission.

[0095] Based on the above technical solution, the third configuration information sent by the network device configures the resources of the third RS for BFD, and the resources of the third RS include time domain resources used only for downlink transmission. The terminal device can subsequently determine the BFI based on the signal quality information of the third RS. For the resources of the third RS configured by the third configuration information, the terminal device may not receive the third RS on time domain resources used for uplink and downlink transmission, that is, the terminal device can receive the third RS on time domain resources used only for downlink transmission. In other words, the network device can configure reference signals for BFD separately for different types of time domain resources. Therefore, since the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources (i.e., time domain resources used only for downlink transmission) and use this signal quality information as the basis for determining the BFI. This can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by low BFD accuracy, and can reduce overhead to improve communication efficiency.

[0096] The sixth aspect of the present application provides a communication method, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the sixth aspect and its possible implementation, the method is described as being executed by a network device. In the method, the network device determines fourth configuration information, and the fourth configuration information is used to configure the resources of a fourth RS, and the fourth RS is used for beam failure detection BFD; wherein the resources of the fourth RS include time domain resources for uplink transmission and downlink transmission; the network device sends the fourth configuration information; wherein the resources of the fourth RS do not include time domain resources used only for downlink transmission, or the network device determines not to send the fourth RS on time domain resources used only for downlink transmission.

[0097] Based on the above technical solution, the fourth configuration information sent by the network device configures resources for a fourth RS for BFD, and the resources for the fourth RS include time domain resources for uplink and downlink transmission. Subsequently, the terminal device can determine the BFI based on the signal quality information of the fourth RS. For the resources for the fourth RS configured by the fourth configuration information, the terminal device may not receive the fourth RS on time domain resources used only for downlink transmission, that is, the terminal device may receive the fourth RS on time domain resources used for both uplink and downlink transmission. In other words, the network device can configure reference signals for BFD separately for different types of time domain resources. Therefore, because the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources (i.e., time domain resources used for uplink and downlink transmission) and use this signal quality information as the basis for determining the BFI. This can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by low BFD accuracy, and can reduce overhead to improve communication efficiency.

[0098] The seventh aspect of the present application provides a communication method, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the seventh aspect and its possible implementation, the method is described as being executed by a network device. In the method, the network device determines fifth configuration information, and the fifth configuration information is used to configure the resources of the fifth RS, and the fifth RS is used for candidate beam detection CBD; wherein the resources of the fifth RS include time domain resources used only for downlink transmission; the network device sends the fifth configuration information; wherein the resources of the fifth RS do not include time domain resources for uplink transmission and for downlink transmission, or, it is determined not to send the fifth RS on the time domain resources used for uplink transmission and downlink transmission.

[0099] Based on the above technical solution, the fifth configuration information sent by the network device configures the resources of the fifth RS for CBD, and the resources of the fifth RS include time domain resources used only for downlink transmission. The terminal device can subsequently determine the RS for BFR based on the signal quality information of the fifth RS. For the resources of the fifth RS configured by the fifth configuration information, the terminal device may not receive the fifth RS on time domain resources used for uplink and downlink transmission, that is, the terminal device can receive the fifth RS on time domain resources used only for downlink transmission. In other words, the network device can configure reference signals for CBD separately for different types of time domain resources. Therefore, since the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources (i.e., time domain resources used only for downlink transmission) and use this signal quality information as the basis for determining the RS for BFR. This can improve the accuracy of the determined RS for BFR, thereby reducing unnecessary BFR processes and reducing overhead to improve communication efficiency.

[0100] In an eighth aspect of the present application, a communication method is provided, which is executed by a network device, or the method is executed by some components in the network device (such as a processor, a chip or a chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the eighth aspect and its possible implementation, the method is described as being executed by a network device. In the method, the network device determines sixth configuration information, and the sixth configuration information is used to configure the resources of the sixth RS, and the sixth RS is used for candidate beam detection CBD; wherein the resources of the sixth RS include time domain resources for uplink transmission and downlink transmission; the network device sends the sixth configuration information; wherein the resources of the sixth RS do not include time domain resources used only for downlink transmission, or, it is determined not to send the sixth RS on time domain resources used only for downlink transmission.

[0101] Based on the above technical solution, the sixth configuration information sent by the network device configures resources for a sixth RS for CBD, and the resources for the sixth RS include time domain resources for uplink and downlink transmission. Subsequently, the terminal device can determine the RS for BFR based on the signal quality information of the sixth RS. For the resources for the sixth RS configured by the sixth configuration information, the terminal device may not receive the sixth RS on time domain resources used for downlink-only transmission; that is, the terminal device may receive the sixth RS on time domain resources used for both uplink and downlink transmission. In other words, the network device can configure reference signals for CBD separately for different types of time domain resources. Therefore, because the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in the above technical solution, the terminal device can determine the signal quality information of the reference signals on the same type of time domain resources (i.e., time domain resources used for uplink and downlink transmission) and use this signal quality information as the basis for determining the RS for BFR. This can improve the accuracy of the RS determined for BFR, thereby reducing unnecessary BFR processes and lowering overhead to improve communication efficiency.

[0102] A ninth aspect of the present application provides a communication method, which is performed by a network device, or performed by a component of the network device (e.g., a processor, chip, or chip system), or implemented by a logic module or software that implements all or part of the network device's functions. In the ninth aspect and its possible implementations, the method is described as being performed by a network device. In this method, the network device sends fifth configuration information and sixth configuration information, the fifth configuration information is used to configure the resources of the fifth RS, and the sixth configuration information is used to configure the resources of the sixth RS, and the fifth RS and the sixth RS are both used for candidate beam detection CBD; wherein, the resources of the fifth RS include time domain resources used only for downlink transmission, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission; the network device receives seventh indication information and eighth indication information, the seventh indication information indicates the RS used for BFR, and the RS used for BFR is determined based on the signal quality information of the fifth RS and the signal quality information of the sixth RS; wherein, the eighth indication information indicates that the RS used for BFR is an RS carried on the time domain resources used only for downlink transmission, or, the eighth indication information indicates that the RS used for BFR is an RS carried on the time domain resources used for uplink transmission and downlink transmission.

[0103] Based on the above technical solution, the fifth configuration information sent by the network device configures resources for the fifth RS for CBD, and the resources for the fifth RS include time domain resources used only for downlink transmission. The sixth configuration information sent by the network device configures resources for the sixth RS for CBD, and the resources for the sixth RS include time domain resources used for uplink and downlink transmission. The terminal device can subsequently determine the RS for BFR based on the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the network device can configure reference signals for CBD separately for different types of time domain resources. Therefore, because the interference experienced by the transmission of reference signals on different types of time domain resources is likely to be different, in the above technical solution, the terminal device can determine the signal quality information of the reference signals on the same type of time domain resources and use this signal quality information as the basis for determining the RS for BFR. This can improve the accuracy of the RS determined for BFR, thereby reducing unnecessary BFR processes and reducing overhead to improve communication efficiency.

[0104] In a possible implementation of the ninth aspect, the RS used for BFR includes one of the following: an RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and an RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS; an RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS and the signal quality information of the sixth RS.

[0105] Based on the above technical solution, the RS for BFR determined by the terminal device may include the RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS, that is, the terminal device can respectively determine the RS for BFR corresponding to the two types of time domain resources based on the reference signals on the two types of time domain resources, so that the terminal device determines the RS for BFR on the corresponding type of time domain resources based on the fifth configuration information and the sixth configuration information, respectively. Since the terminal device independently determines the RS for BFR on the two types of time domain resources, the accuracy of the determined RS for BFR can be further improved.

[0106] In addition, the RS for BFR determined by the terminal device includes the RS corresponding to the signal quality information with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the terminal device jointly determines the RS for BFR based on the fifth configuration information and the sixth configuration information, which can improve the accuracy of the determined RS for BFR. At the same time, because the terminal device determines the RS with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS as the RS for BFR, it can also use the RS with better signal quality as the RS for BFR as much as possible, thereby improving the communication quality of subsequent communications based on the RS for BFR.

[0107] The tenth aspect of the present application provides a communication device, which can implement the method in any possible implementation of any aspect of the first to ninth aspects mentioned above. The device includes corresponding units or modules for executing the above methods. The units or modules included in the device can be implemented by software and / or hardware. For example, the device can be a terminal device or a network device, or the device can be a component in a terminal device or a network device (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module or software that can implement all or part of the functions of the terminal device or the network device. Among them, the device includes a processing unit and an interface unit, and the component modules of the communication device can also be used to execute the steps performed in each possible implementation of any aspect of the first to ninth aspects, and achieve corresponding technical effects. For details, please refer to the above description and will not be repeated here.

[0108] In the eleventh aspect of the present application, a communication device is provided, comprising at least one processor, which is used to execute programs or instructions in a memory so that the device can implement the method executed in each possible implementation manner of any one of the first to ninth aspects.

[0109] The twelfth aspect of the present application provides a communication device comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method executed in each possible implementation of any one of the first to ninth aspects mentioned above.

[0110] The thirteenth aspect of the present application provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method performed in any possible implementation of any one of the first to ninth aspects above.

[0111] In the fourteenth aspect, the present application provides a computer program product. When the computer program in the computer program product is executed by a processor, the processor executes the method performed in each possible implementation of any one of the first to ninth aspects above.

[0112] In the fifteenth aspect, the present application provides a chip system, which includes at least one processor for supporting a communication device to implement the method executed in each possible implementation manner of any one of the first to ninth aspects above.

[0113] In one possible design, the chip system may further include a memory for storing program instructions and data necessary for the first communication device. The chip system may be composed of a chip or may include a chip and other discrete components. Optionally, the chip system may further include an interface circuit that provides program instructions and / or data to the at least one processor.

[0114] It should be understood that the technical effects brought about by any design method in the tenth to fifteenth aspects can be referred to the technical effects brought about by the different design methods in the above-mentioned first to ninth aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0115] FIG1 is a schematic diagram of a communication system provided by the present application;

[0116] FIG2a is a schematic diagram of the implementation process of the BFR involved in this application;

[0117] Figures 2b, 2c, and 2d are schematic diagrams of signal transmission of different types of time domain resources involved in this application;

[0118] Figures 3 to 5 are schematic diagrams of the communication method provided by this application;

[0119] FIG6 is a schematic diagram of signal transmission of different types of time domain resources involved in this application;

[0120] FIG7 is a schematic diagram of a communication method provided by the present application;

[0121] 8-11 are schematic diagrams of the communication device provided in this application. DETAILED DESCRIPTION

[0122] First, some of the terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0123] (1) Configuration and pre-configuration: In this application, configuration and pre-configuration will be used at the same time. Configuration refers to the network equipment such as base stations or servers sending some parameter configuration information or parameter values ​​to the terminal through messages or signaling, so that the terminal can determine the communication parameters or resources during transmission based on these values ​​or information. Pre-configuration is to directly give the definition of the corresponding parameters or parameter values ​​in the standard protocol (without sending the parameters to the terminal through messages or signaling), or by setting the relevant parameters or values ​​in the terminal device in advance. This application does not limit this. Furthermore, these values ​​and parameters can be changed or updated.

[0124] (2) In this application, “used for indication” can include direct indication and indirect indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0125] In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, it can be implemented by direct indication, such as by indicating the information to be indicated itself or the index of the information to be indicated. It can also be implemented by indirectly indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each information agreed in advance (for example, stipulated in the protocol), thereby reducing the indication overhead to a certain extent.

[0126] The information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending timing of these sub-information can be the same or different. The specific sending method is not limited in this application. Among them, the sending period and / or sending timing of these sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can, for example, but not limited to, include one or a combination of at least two of radio resource control (RRC) signaling, medium access control (MAC) layer signaling and physical layer signaling. Among them, MAC layer signaling, for example, includes a medium access control control element (MAC CE); physical layer signaling, for example, includes downlink control information (DCI).

[0127] (3) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. In addition, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0128] (4) "Sending" and "receiving" in the embodiments of the present application indicate the direction of signal transmission. In the present application, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it indirectly to B through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0129] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (such as 120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is connected to the RAN node 110 wirelessly, and the RAN node 110 is connected to the core network 200 wirelessly or by wire. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device that integrates the logical functions of the core network equipment and the logical functions of the RAN node. Terminals and RAN nodes may be connected to each other via wired or wireless means.

[0130] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, or a future radio access system defined in the 3rd Generation Partnership Project (3GPP). RAN100 may also include two or more of the aforementioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0131] A RAN node, also known as a radio access network device, RAN entity, or access node, facilitates wireless access to a communication system by a terminal. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a sixth-generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as 110a in Figure 1), a micro base station, an indoor station (such as 110b in Figure 1), a relay node, or a donor node.

[0132] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, and can also implement the service data adaptation protocol (SDAP) functions; the DU implements the base station's radio link control layer and MAC layer functions, and can also implement some or all of the physical layer functions. For detailed descriptions of each of the above protocol layers, please refer to the relevant technical specifications of 3GPP. The RU can be used to implement the transmission and reception of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, such as in a baseband unit (BBU). The RU can be included in radio frequency equipment, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0133] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU may be called an open CU (O-CU), a DU may be called an open DU (O-DU), and a RU may be called an open RU (O-RU). The RAN node in the embodiments of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with the corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For ease of description, the following description takes a base station as an example of a RAN node.

[0134] A terminal is a device with wireless transceiver capabilities that can send signals to a base station or receive signals from a base station. A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. A terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the terminal.

[0135] Base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0136] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. To terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, to base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal functionality.

[0137] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0138] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0139] In this application, the base station sends downlink signals or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel. The following will introduce the BFR process involved in this application with some implementation examples.

[0140] Please refer to FIG. 2 a , which shows an implementation example of a process of performing BFR on a terminal device. The process may include the following steps.

[0141] Step 1. The network device sends configuration information of a reference signal to the terminal device. Thereafter, the network device may send the reference signal based on the configuration information, and correspondingly, the terminal device may receive the reference signal based on the configuration information.

[0142] Specifically, in step 1, the network device may configure the RS for BFD through an RRC message (wherein the set of RSs for BFD may be referred to as set ), and the RRC message also configures the RS for CBD (wherein the set of RS for CBD can be called set ). Generally, set It contains at most 2 RSs, each of which can be SSB or CSI-RS.

[0143] Please refer to the example shown in Figure 2b. The network device can operate in half-duplex mode, that is, the network device performs one of uplink transmission and downlink transmission on a certain time slot. For example, in the twenty time slots from time slot 0 to time slot 19, the network device can configure the time slot type of every five time slots (i.e., time slot 0 to time slot 4, time slot 5 to time slot 9, time slot 10 to time slot 14, time slot 15 to time slot 19) to be "DDDSU" through configuration. Among them, the time slot type D indicates that the signal transmission direction on the time slot is downlink, that is, the time slot with the slot type D is only used for downlink transmission. The time slot type U indicates that the signal transmission direction on the time slot is uplink, that is, the time slot with the slot type U is only used for uplink transmission. The time slot type F indicates that the signal transmission direction on the time slot can be uplink or downlink, which can be understood as a flexible time slot.

[0144] Taking Figure 2b as an example, the network device can configure set in the configuration information of step 1 Contains 2 periodic CSI-RS, namely set The CSI-RS 0 and CSI-RS1 shown in Figure 2b are included. CSI-RS 0 has a period of three time slots, i.e., it is transmitted on time slots 0, 3, 6, 12, 15, and 18 (since time slot 9 is configured as time slot type U, the network device does not transmit CSI-RS 0 in time slot 9). CSI-RS1 has a period of two time slots, i.e., it is transmitted on time slots 1, 3, 5, 7, 8, 11, 13, 15, and 17 (since time slot 19 is configured as time slot type U, the network device does not transmit CSI-RS1 in time slot 19).

[0145] After step 1, the terminal device can receive the reference signal based on the configuration information. and Furthermore, the terminal device can be based on the reference signal and Execute steps 2 and 3 based on the corresponding signal quality information.

[0146] Step 2. The terminal device executes BFD. The RS in the RX_S is used to detect whether a beam failure occurs.

[0147] In step 2, still taking the scenario shown in Figure 2a as an example, the terminal device can obtain a BLER through CSI-RS 0, which can be understood as the BLER of the hypothetical physical downlink control channel (PDCCH) (hypothetical PDCCH BLER). For example, the terminal device measures the signal to interference plus noise ratio (SINR) through CSI-RS 0. Under this SINR, it is assumed that the network device sends the PDCCH. The BLER of the PDCCH received by the terminal device at this time is the BLER obtained by the terminal device through CSI-RS 0. Similarly, the terminal device can also obtain another BLER through CSI-RS1.

[0148] And, when The BLER corresponding to CSI-RS 0 and CSI-RS1 in the above example is worse than the threshold (for example, the threshold can be recorded as Q out,LR , where the BLER value is greater than Q out,LR , Q out,LR The value of can be 0.1, 0.01, etc. out,LR And the Q that appears later in,LR The terminal device determines that this is a BFI and notifies the MAC layer of the BFI. Furthermore, before a configured timer (e.g., the beam failure detection timer (beamFailureDetectionTimer) configured on the network device) expires, if the number of BFIs is greater than or equal to a threshold configured on the network device (e.g., beamFailureInstanceMaxCount), the terminal device may be triggered to execute step 4a or step 4b.

[0149] Step 3. The terminal device executes CBD.

[0150] In step 3, the terminal device Based on the configured RSRP threshold (e.g. Q in,LR ) selects a suitable new beam, which can be understood as selecting a new beam from the set Select RSRP greater than or equal to Q in,LR The reference signal (denoted as q new ).

[0151] It should be understood that after the terminal device receives the configuration information of the reference signal in step 1, the terminal device can execute steps 2 and 3 based on the configuration information, that is, the execution of step 3 may not depend on the triggering of step 2, and may be before or after step 2.

[0152] Step 4a. The terminal device initiates a random access process.

[0153] In step 4a, the terminal device can new Perform random access process so that the network device determines q through random access process new . Subsequent network devices and terminal devices can be based on q new Communicate to achieve BFR. For example, the terminal device can perform a random access process through a non-contention random access (CFRA) or a contention-based random access (CBRA). Taking CBRA as an example, the terminal device can send a message 3 (MSG3) carrying a BFR MAC CE during the CBRA process, so that the network device determines q based on MSG3. new .

[0154] Step 4b. The terminal device indicates the candidate beams through MAC CE.

[0155] In step 4b, the terminal device can carry the BFR MAC CE in the physical uplink shared channel (PUSCH) scheduled by the DCI, so that the network device determines q based on the BFR MAC CE. new . Subsequent network devices and terminal devices can be based on q new Optionally, the terminal device may also send a PUCCH carrying a link recovery request (LRR), and the LRR may trigger the network device to send a DCI to schedule the PUSCH.

[0156] It should be noted that in step 4a and step 4b, the BFR MAC CE may indicate which cells have detected beam failures and whether there are q new , and q new The index of (index).

[0157] Optionally, if the network device configures two reference signals for TRP transmission in step 1 (i.e., Corresponding to TRP 0, Corresponding to TRP 1, x takes the value of 0 or 1), which is equivalent to configuring two RS sets for BFR. The BFR MAC CE can also indicate on which of the two TRPs the beam failure was detected, and q new Correspondence with TRP.

[0158] In a MIMO-based communication system, the antenna array of a network device can transmit and receive communication beams in multiple beam directions. When a communication beam is directed toward a terminal device, the communication quality between the network device and the terminal device is better. The process of selecting multiple beam directions by the network device is called beam training or beam scanning.

[0159] At present, when a network device is selecting from multiple beam directions, the network device may send configuration information of one or more reference signals, and different reference signals may correspond to different communication beams. Accordingly, a terminal device may receive the one or more reference signals based on the configuration information, and the terminal device may perform measurements based on the received reference signals and send measurement results, which may be used in the process of the network device selecting from multiple beam directions. Generally, current communication systems generally default to the network device communicating in a half-duplex manner, and for this reason, the above configuration information is configured based on a half-duplex manner (for example, the configuration of the time slot type "DDDSU" shown in FIG. 2a ).

[0160] Furthermore, when network devices communicate in half-duplex mode, latency is affected to a certain extent because they can only send downlink signals or receive uplink signals in the same time unit, but not simultaneously. Therefore, in addition to half-duplex communication, network devices can also communicate in full-duplex mode.

[0161] As an implementation example, as shown in Figure 2c, it is an implementation example of a network device operating in full-duplex mode. For example, in the twenty time slots from time slot 0 to time slot 19, the network device can configure the time slot type of every five time slots (that is, time slot 0 to time slot 4, time slot 5 to time slot 9, time slot 10 to time slot 14, time slot 15 to time slot 19) to be "DXXXU" through configuration. Among them, the implementation of time slot type D and time slot type U can refer to the implementation process of Figure 2b above. The time slot type of X indicates that the signal transmission direction between the network device and the terminal device in the time slot is downlink and uplink, that is, the time slot with a time slot type of X is used for uplink transmission and downlink transmission. In the example shown in Figure 2c, taking time slot 3, a time slot with a time slot type of X, as an example, in time slot 3, the communication frequency band of the network device includes the frequency band for uplink transmission, the guard band, and the frequency band for downlink transmission. In timeslot 3, the network device can receive uplink signals in the uplink frequency band and transmit downlink signals in the downlink frequency band. The network device can also operate in full-duplex mode at a symbol granularity. For example, in a given symbol, the network device can simultaneously perform downlink and uplink transmissions. Terminal devices can operate in half-duplex mode, meaning they cannot simultaneously perform uplink and downlink transmissions.

[0162] Accordingly, when a network device communicates in full-duplex mode, since the configuration information of the reference signal is configured in half-duplex mode, the reference signal sent by the network device based on the configuration information may be subject to different interference in different time units, thereby affecting the accuracy of the measurement results obtained by the terminal device based on the reference signal. A time unit can be understood as a symbol, a time slot, a sub-time slot, a subframe, or a radio frame.

[0163] Exemplarily, as shown in Figure 2d, it is an implementation example of configuring a reference signal for a network device based on a full-duplex manner. In this example, the transmission period and time domain position of CSI-RS 0 and CSI-RS1 can refer to Figure 2b and related descriptions above. In Figure 2d, due to the presence of uplink frequency bands and protection frequency bands (i.e., the shaded portion on the time slots with time slot type X in Figure 2d) in the time slots with time slot type X (i.e., time slots 1, 3, 6, 7, 11, 12, 13, 17, 18), the bandwidth of CSI-RS 0 or CSI-RS1 will be split. For the terminal device, when the terminal device executes BFD and CBD, the terminal device will still use the signal quality of CSI-RS 0 and CSI-RS1 as the execution basis of BFD and CBD.

[0164] However, when a terminal device receives the CSI-RS in a slot type X time slot, it may also receive uplink signals transmitted by other terminal devices in the uplink frequency band of that time slot, thereby affecting the reception of the CSI-RS in that time slot. Furthermore, network devices only perform downlink transmissions in slot type D time slots, but they may also perform uplink transmissions in slot type X time slots in addition to downlink transmissions. Therefore, the number of antennas used by the network device to transmit reference signals in these two types of time slots may be different, thus also affecting the reception of the CSI-RS in slot type X time slots.

[0165] For example, it is possible that the signal quality of the reference signal on the time slot of time slot type X is not very good, but the signal quality of the reference signal on the time slot of time slot type D is better. When the terminal device still performs BFD or CBD based on the above method, it will affect the accuracy of the measurement result obtained by the terminal device based on the reference signal. For example, since CSI-RS is periodic, that is, the terminal device may receive CSI-RS on both the time slot of time slot type D and the time slot of time slot type X. However, since the transmission conditions of CSI-RS on these two types of time slots are different, the BLER obtained based on the CSI-RS may be relatively poor, so BFR will still be triggered, which may cause BFR to be triggered frequently (for example, the terminal device frequently initiates random access), thereby reducing communication efficiency.

[0166] To address the aforementioned issues, this application provides a communication method and related devices for improving the accuracy of BFD implementation by terminal devices based on BFI. This reduces unnecessary BFR processes caused by low BFD accuracy, reduces overhead, and improves communication efficiency. The solution provided by this application is described below with reference to additional figures.

[0167] Please refer to FIG3 , which is a schematic diagram of the communication method provided in this application. The method includes the following steps.

[0168] It should be noted that in the implementation process shown in Figures 3 / 5 / 6 / 7, the network device and the terminal device are used as the execution subjects of the interactive schematic to illustrate the method provided by this application, but this application does not limit the execution subjects of the interactive schematic. For example, the method executed by the network device can also be executed by a module of the network device (such as a chip, a chip system, or a processor), and can also be implemented by a logical node, a logical module, or software that can implement all or part of the network device. The method executed by the terminal device can also be executed by a module of the terminal device (such as a chip, a chip system, or a processor), and can also be implemented by a logical node, a logical module, or software that can implement all or part of the terminal device functions.

[0169] The method shown in FIG3 includes steps S301 and S302 , and each step will be described below.

[0170] S301. A network device sends first configuration information, and a terminal device receives the first configuration information accordingly. The first configuration information is used to configure resources of a first RS, and the first RS uses BFD.

[0171] S302. The terminal device determines the BFI based on the first information, wherein the first information is one of the following information A to information C:

[0172] Information A. first signal quality information and second signal quality information;

[0173] Information B. first signal quality information;

[0174] Information C. Second signal quality information.

[0175] In which, after the terminal device receives the first configuration information in step S301, the terminal device can receive the first RS based on the first configuration information, and determine the signal quality information based on the first RS. Accordingly, in information A to information C in step S302, the first signal quality information is determined based on the first RS carried by time domain resources used only for downlink transmission in the resources of the first RS, and the second signal quality information is determined based on the first RS carried by time domain resources used for uplink and downlink transmission in the resources of the first RS.

[0176] It should be noted that the first RS configured by the first configuration information may include N periodic RSs (for example, the two periodic RSs shown in FIG2a above, namely CSI-RS 0 and CSI-RS1), where N is a positive integer, for example, may be equal to 2. Accordingly, after the terminal device receives the N periodic RSs contained in the first RS based on the first configuration information, the one or more RSs may include two categories, one category being RSs carried on time domain resources used only for downlink transmission (for ease of reference later, denoted as RS 0), and the other category being RSs carried on time domain resources used for uplink and downlink transmission (for ease of reference later, denoted as RS1). In other words, RS 0 includes N periodic RSs carried on time domain resources used only for downlink transmission, and RS1 includes N periodic RSs carried on time domain resources used for uplink and downlink transmission.

[0177] The first signal quality information described above can be understood as the signal quality information corresponding to RS 0. That is, after the terminal device receives the RS carried on the time domain resources used only for downlink transmission in the N periodic RSs, the terminal device determines the first signal quality information based on the average value, maximum value, minimum value, etc. of the signal quality information corresponding to the RS carried on the time domain resources used only for downlink transmission in the N periodic RSs. Alternatively, each RS of the N periodic RSs carried on the time domain resources used only for downlink transmission corresponds to one signal quality information, that is, there are N signal quality information, and at this time the first signal quality information can include the N signal quality information.

[0178] Similarly, the second signal quality information described above can be understood as the signal quality information corresponding to RS1. That is, after the terminal device receives the RS carried on the time domain resources for uplink transmission and downlink transmission in the N periodic RSs, the terminal device determines the second signal quality information based on the average value, maximum value, minimum value, etc. of the signal quality information corresponding to the RS carried on the time domain resources for uplink transmission and downlink transmission in the N periodic RSs. Alternatively, each RS of the N periodic RSs carried on the time domain resources for uplink transmission and downlink transmission corresponds to a signal quality information, that is, there are N signal quality information, and the second signal quality information can include the N signal quality information.

[0179] It should be understood that the reference signals involved in this application may include channel state information reference signal (CSI-RS), synchronization signal / physical broadcast channel block (SS / PBCH block or SSB), etc.

[0180] It should be understood that time domain resources that can only be used for the same transmission direction at the same time are one type of time domain resources, and this type of time domain resources can be understood as half-duplex time domain resources. For example, time domain resources that can only be used for downlink transmission at the same time, or time domain resources that can only be used for uplink transmission at the same time. Time domain resources that can be used for different transmission directions at the same time are another type of time domain resources, and this type of time domain resources can be understood as full-duplex time domain resources. For example, time domain resources that can be used for both downlink transmission and uplink transmission at the same time. Half-duplex time domain resources and full-duplex time domain resources are different types of time domain resources.

[0181] It should be understood that the first configuration information received by the terminal device in step S301 may come from the network device. In the process of communication between the terminal device and the network device, the network device may configure the time domain resource type for communication between the two by configuration, for example, configuring the time domain resource type for communication between the two as a time domain resource used only for downlink transmission, a time domain resource used for uplink and downlink transmission, or a time domain resource used only for uplink transmission, or a flexible time domain resource, etc. Optionally, the network device may change the resource type for communication between the two by reconfiguration. Optionally, the resource granularity of the time domain resource type configured by the network device may be implemented in multiple ways, for example, the configured resource granularity may be a symbol, a time slot, a sub-time slot, a subframe, or a radio frame.

[0182] It should be understood that after the terminal device determines the BFI in step S302, the terminal device can indicate the BFI to the medium access control (MAC) layer, and when the number of BFIs recorded in the MAC layer is greater than or equal to a threshold, the terminal device can trigger a BFR process (for example, the terminal device executes one or more of sending a link recovery request (LRR), sending a MAC control element (CE) indicating BFR, performing random access, etc.). Optionally, the threshold can be pre-configured, or the threshold can be configured by the network device (for example, the threshold configured by the network device through the beam failure time maximum number (beamFailureInstanceMaxCount) information element).

[0183] In one possible implementation, when the first information is the aforementioned information A, in step S302, the process of the terminal device determining the BFI based on the first information may include: the terminal device determining the BFI when the signal quality corresponding to the first signal quality information is lower than or equal to a first threshold and the signal quality corresponding to the second signal quality information is lower than or equal to a second threshold.

[0184] Specifically, in step S302, if the terminal device determines that the signal quality on the time domain resources used only for downlink transmission is low, and if the terminal device determines that the signal quality on the time domain resources used for uplink and downlink transmission is low, the terminal device determines the BFI. Thus, the terminal device determines whether BFI has occurred based on the signal quality information of the RS on the two types of time domain resources, which can improve the accuracy of the terminal device's determination of BFI, and thereby improve the accuracy of implementing BFD based on the BFI.

[0185] Optionally, the first threshold and the second threshold are the same, or the first threshold and the second threshold are different. The first threshold and the second threshold may be pre-configured or configured by the network device, which is not limited here.

[0186] Optionally, the signal quality information can be implemented in multiple ways, such as one or more of block error rate (BLER), reference signal received power (RSRP), reference signal received quality (RSRQ), and received signal strength indicator (RSSI).

[0187] For example, when the signal quality information is BLER and the threshold value is a BLER threshold value (e.g., 0.1, 0.01, etc.), a larger BLER value indicates worse signal quality corresponding to the BLER, and conversely, a smaller BLER value indicates better signal quality corresponding to the BLER. Accordingly, if the signal quality corresponding to the signal quality information (e.g., the first signal quality information or the second signal quality information, or the third signal quality information or the fourth signal quality information mentioned below) is lower than or equal to the threshold value (e.g., the first threshold value, the second threshold value, etc.), it can be understood that the value of the signal quality information is greater than or equal to the threshold value. Conversely, if the signal quality corresponding to the signal quality information is higher than or equal to the threshold value, it can be understood that the value of the signal quality information is less than or equal to the threshold value.

[0188] For another example, when the signal quality information is RSRP and the value of the threshold is the RSRP threshold, the larger the RSRP value, the better the signal quality corresponding to the RSRP, and conversely, the smaller the RSRP value, the worse the signal quality corresponding to the RSRP. Accordingly, if the signal quality corresponding to the signal quality information (such as the first signal quality information or the second signal quality information, or the third signal quality information, the fourth signal quality information, etc. mentioned later) is lower than the threshold (such as the first threshold, the second threshold, etc.), it can be understood that the value of the signal quality information is less than the value of the threshold. Conversely, if the signal quality corresponding to the signal quality information is higher than or equal to the threshold, it can be understood that the value of the signal quality information is greater than or equal to the threshold.

[0189] It should be understood that when the first information is the aforementioned information A, the terminal device may also determine the BFI based on the higher signal quality between the signal quality corresponding to the first signal quality information and the signal quality corresponding to the second signal quality information. For example, when the signal quality information is BLER, the first signal quality information is a first BLER and the second signal quality information is a second BLER, then the higher signal quality is the signal quality corresponding to the minimum of the first BLER and the second BLER. The BFI is determined when the signal quality is lower than or equal to the BLER threshold.

[0190] In another implementation, when the first information is the aforementioned information A, the terminal device may further determine the BFI based on the worse signal quality between the signal quality corresponding to the first signal quality information and the signal quality corresponding to the second signal quality information. For example, when the signal quality information is BLER, the first signal quality information is a first BLER and the second signal quality information is a second BLER, then the worse signal quality is the signal quality corresponding to the maximum value between the first BLER and the second BLER. The BFI is determined when the signal quality is less than or equal to the BLER threshold.

[0191] In a possible implementation, when the first information is the information B, the method further includes: the terminal device determines not to receive the first RS on the time domain resources used for uplink transmission and downlink transmission.

[0192] Specifically, the first information serves as one of the bases for the terminal device to determine the BFI. When the first information is the first signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can determine in a preconfigured manner not to receive the first RS on the time domain resources used for uplink and downlink transmissions. For example, when the terminal device determines that the signal quality on the time domain resources used only for downlink transmission is low, the terminal device determines the BFI. Thus, the terminal device can determine whether BFI occurs by using the signal quality information of the RS on the same type of time domain resources (i.e., time domain resources used only for downlink transmission), which can improve the accuracy of the terminal device in determining the BFI while also reducing the overhead and power consumption of the terminal device.

[0193] In a possible implementation, when the first information is the information B, the method further includes: the terminal device receives first indication information, and the first indication information indicates receiving the first RS on a time domain resource used only for downlink transmission.

[0194] Specifically, the first information serves as one of the bases for the terminal device to determine BFI. When the first information is the first signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can also receive the first indication information indicating that the first RS is received on the time domain resources used only for downlink transmission, so that the terminal device determines not to receive the first RS on the time domain resources used for uplink and downlink transmission based on the first indication information. Thus, the terminal device can determine whether BFI occurs by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the terminal device in determining BFI while also reducing the overhead and power consumption of the terminal device.

[0195] It should be understood that after the terminal device receives the first indication information sent by the network device, the terminal device can receive the first RS on the time domain resources used only for downlink transmission based on the first indication information. The first indication information can also be replaced by other implementations. For example, the first indication information sent by the network device can instruct the network device to send the first RS on the time domain resources used only for downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used only for downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used only for downlink transmission, and instruct the first RS sent by the network device not to be carried on the time domain resources used for uplink and downlink transmission.

[0196] In a possible implementation, when the first information is the information C, the method further includes: the terminal device determines not to receive the first RS on a time domain resource used only for downlink transmission.

[0197] Specifically, the first information serves as one of the bases for the terminal device to determine the BFI. When the first information is the second signal quality information corresponding to the time domain resources used for uplink transmission and downlink transmission, the terminal device can determine in a preconfigured manner not to receive the first RS on the time domain resources used only for downlink transmission. For example, when the signal quality of the terminal device on the time domain resources used for uplink transmission and downlink transmission is low, the terminal device determines the BFI. Thus, the terminal device can determine whether BFI occurs by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink transmission and downlink transmission), which can improve the accuracy of the terminal device in determining the BFI while also reducing the overhead and power consumption of the terminal device.

[0198] In a possible implementation, when the first information is the information C, the method further includes: the terminal device receives second indication information, and the second indication information indicates receiving the first RS on the time domain resources used for uplink transmission and downlink transmission.

[0199] Specifically, the first information serves as one of the bases for the terminal device to determine BFI. When the first information is the second signal quality information corresponding to the time domain resources used for uplink and downlink transmission, the terminal device may also receive second indication information indicating that the first RS is received on the time domain resources used for uplink and downlink transmission, so that the terminal device determines not to receive the first RS on the time domain resources used only for downlink transmission based on the second indication information. Thus, the terminal device can determine whether BFI occurs by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink and downlink transmission), thereby reducing the overhead and power consumption of the terminal device.

[0200] It should be understood that after the terminal device receives the second indication information sent by the network device, the terminal device can receive the first RS on the time domain resources used for uplink transmission and downlink transmission based on the second indication information. The second indication information can also be replaced by other implementations. For example, the second indication information sent by the network device can instruct the network device to send the first RS on the time domain resources used for uplink transmission and downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission; for another example, the first indication information sent by the network device can instruct the first RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission, and instruct the first RS sent by the network device not to be carried on the time domain resources used only for downlink transmission.

[0201] In a possible implementation, in the technical solution shown in FIG3 , before step S302 , the method further includes: the terminal device receives third indication information, and the third indication information is used to indicate that the first information is one of information A to information C.

[0202] Specifically, the terminal device may also receive third indication information, so that the terminal device can determine that the first information is one of the above items based on the third indication information. Thus, the third indication information enables the terminal device to clarify the basis for determining the BFI, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the BFI, which can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by the low accuracy of BFD, and reducing overhead to improve communication efficiency.

[0203] Optionally, the terminal device determines that the first information is one of information A to information C through preconfiguration.

[0204] Based on the technical solution shown in Figure 3, the first configuration information received by the terminal device in step S301 configures the resources of the first RS for BFD, and the resources of the first RS include time domain resources used only for downlink transmission and time domain resources used for uplink and downlink transmission. Thereafter, the terminal device can determine the BFI based on the first information in step S302, where the first information includes first signal quality information determined by the first RS based on the time domain resources used only for downlink transmission in the resources of the first RS, and / or second signal quality information determined by the first RS based on the time domain resources used for uplink and downlink transmission in the resources of the first RS. Therefore, since the interference to the transmission of reference signals on different types of time domain resources is likely to be different (for example, in a time unit used only for downlink transmission, the signal that interferes with the terminal device is generally the downlink signal of other terminal devices; in a time unit used for uplink transmission and for downlink transmission, the signal that interferes with the terminal device includes not only the downlink signal of other terminal devices but also the uplink signal of other terminal devices), in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining BFI, which can improve the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by the low accuracy of BFD, and can reduce overhead to improve communication efficiency.

[0205] Steps S301 and S302 above describe the implementation process of configuring the first RS for BFD using the first configuration information. As shown in FIG2a , the network device can also configure an RS for CBD. The following describes how, after receiving the RS for CBD, the terminal device determines the RS for BFD.

[0206] In one possible implementation, the method shown in FIG3 further includes: the terminal device receiving second configuration information, the second configuration information being used to configure resources of a second RS, the second RS being used for candidate beam detection (CBD); the method further includes: the terminal device determining, from the second RS, an RS for BFR based on the second information, the second information being one of information D to information E:

[0207] Information D. Third signal quality information and fourth signal quality information.

[0208] Information E. Third signal quality information.

[0209] Information F. Fourth signal quality information.

[0210] After receiving the second configuration information, the terminal device may receive the second RS based on the second configuration information and determine signal quality information based on the second RS. Accordingly, in information D to information F, the third signal quality information is determined based on the second RS carried by time domain resources used only for downlink transmission in the resources of the second RS, and the fourth signal quality information is determined based on the second RS carried by time domain resources used for uplink and downlink transmission in the resources of the second RS.

[0211] It should be noted that the second RS configured by the second configuration information may include K periodic RSs (for example, the two periodic RSs shown in Figure 2a above, namely CSI-RS 0 and CSI-RS1), where K is a positive integer (K ​​and N may be equal, or K and N may not be equal, which is not limited here). Accordingly, after the terminal device receives the K periodic RSs contained in the second RS based on the second configuration information, the one or more RSs may include two categories, one is the RS carried on the time domain resources used only for downlink transmission (for the convenience of reference later, denoted as RS2), and the other is the RS carried on the time domain resources used for uplink transmission and downlink transmission (for the convenience of reference later, denoted as RS 3). In other words, RS2 includes K periodic RSs carried on the time domain resources used only for downlink transmission, and RS 3 includes K periodic RSs carried on the time domain resources used for uplink transmission and downlink transmission.

[0212] The third signal quality information described above can be understood as the signal quality information corresponding to RS2. That is, after the terminal device receives K periodic RSs carried on the time domain resources used only for downlink transmission, the terminal device determines the third signal quality information based on the average value, maximum value, minimum value, etc. of the signal quality information corresponding to the RS carried on the time domain resources used only for downlink transmission in the K periodic RSs. Alternatively, each RS of the K periodic RSs carried on the time domain resources used only for downlink transmission corresponds to a signal quality information, that is, there are K signal quality information, and the third signal quality information can include the K signal quality information.

[0213] Similarly, the fourth signal quality information described above can be understood as the signal quality information corresponding to RS 3. That is, after the terminal device receives K periodic RSs carried on the time domain resources for uplink transmission and downlink transmission, the terminal device determines the fourth signal quality information based on the average value, maximum value, minimum value, etc. of the signal quality information corresponding to the RS carried on the time domain resources for uplink transmission and downlink transmission in the K periodic RSs. Alternatively, each RS in the K periodic RSs carried on the time domain resources for uplink transmission and downlink transmission corresponds to a signal quality information, that is, there are K signal quality information, and the fourth signal quality information can include the K signal quality information.

[0214] Optionally, the first configuration information and the second configuration information may be carried in the same message (eg, the same RRC message), or in different messages (eg, different RRC messages), which is not limited here.

[0215] Specifically, the second configuration information received by the terminal device configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink transmission and downlink transmission. Thereafter, the terminal device can determine the RS for BFR based on the second information, and the second information includes determining the third signal quality information based on the second RS carried by the time domain resources used only for downlink transmission in the resources of the second RS, and / or determining the fourth signal quality information based on the second RS carried by the time domain resources used for uplink transmission and downlink transmission in the resources of the second RS. Therefore, since the interference to the transmission of reference signals on different types of time domain resources is likely to be different, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the RS for BFR, which can improve the accuracy of the determined RS for BFR, thereby reducing unnecessary BFR processes and reducing overhead to improve communication efficiency.

[0216] In one possible implementation, when the second information is information D, the process of the terminal device determining the RS used for BFR from the second RS based on the second information may include: the terminal device determines the RS corresponding to the signal quality information with better signal quality between the third signal quality information and the fourth signal quality information as the RS used for BFR.

[0217] Specifically, the terminal device can determine the RS corresponding to the signal quality information with better signal quality among the second RS on the time domain resources used only for downlink transmission and the second RS on the time domain resources used for uplink and downlink transmission as the RS for BFR. Thus, the terminal device determines the RS for BFR based on the signal quality information of the RS on the two types of time domain resources, and can determine the RS for BFR with better communication quality on as many time domain resources as possible, thereby improving the communication quality of subsequent communications based on the RS.

[0218] As an implementation example, in the case where the second information is information D, take the signal quality information as RSRP as an example. After the terminal device receives the second RS based on the second configuration information, the terminal device can determine the second RS (for the convenience of reference later, denoted as RS 4, RS 4 may include 0 or 1 or more RSs) that is greater than the RSRP threshold among the one or more RSRPs corresponding to the second RS on the time domain resources used only for downlink transmission, and the terminal device can also determine the second RS (for the convenience of reference later, denoted as RS 5, RS 5 may include 0 or 1 or more RSs) that is greater than the RSRP threshold among the one or more RSRPs corresponding to the second RS on the time domain resources used for uplink transmission and downlink transmission. Thereafter, the terminal device can determine any one of RS 4 and RS 5 as the RS for BFR.

[0219] When the second information is information E, the process of the terminal device determining the RS used for BFR from the second RS based on the second information may include: the terminal device determines the RS corresponding to the signal quality information with better signal quality in the third signal quality information as the RS used for BFR.

[0220] When the second information is information F, the process of the terminal device determining the RS used for BFR from the second RS based on the second information may include: the terminal device determines the RS corresponding to the signal quality information with better signal quality in the fourth signal quality information as the RS used for BFR.

[0221] It should be understood that, taking RSRP as the signal quality information, better signal quality can be understood as better RSRP, for example, the RSRP corresponding to a certain RS in the second RS is greater than or equal to the RSRP threshold. Taking BLER as the signal quality information, better signal quality can be understood as lower BLER, for example, the BLER is lower than the threshold.

[0222] In a possible implementation, when the second information is information E, the method further includes: the terminal device determines not to receive the second RS on the time domain resources used for uplink transmission and downlink transmission.

[0223] Specifically, the second information serves as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device can determine in a preconfigured manner not to receive the second RS on the time domain resources used for uplink and downlink transmission. For example, the terminal device determines the RS for BFR in the second RS transmitted on the time domain resources used only for downlink transmission. Thus, the terminal device can determine the RS for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the determined RS for BFR while also reducing the overhead and power consumption of the terminal device.

[0224] In a possible implementation, when the second information is information E, the method further includes: the terminal device receives fourth indication information, where the fourth indication information is used to indicate receiving the second RS on a time domain resource used only for downlink transmission.

[0225] Specifically, the second information serves as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used only for downlink transmission, the terminal device may also receive fourth indication information indicating that the second RS is to be received on the time domain resources used only for downlink transmission, so that the terminal device determines not to receive the second RS on the time domain resources used for uplink and downlink transmission based on the fourth indication information. Thus, the terminal device can determine the RS for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0226] It should be understood that after the terminal device receives the fourth indication information sent by the network device, the terminal device can receive the second RS on the time domain resources used only for downlink transmission based on the fourth indication information. The fourth indication information can also be replaced by other implementations. For example, the fourth indication information sent by the network device can instruct the network device to send the second RS on the time domain resources used only for downlink transmission; for another example, the fourth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used only for downlink transmission; for another example, the fourth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used only for downlink transmission, and instruct the second RS sent by the network device not to be carried on the time domain resources used for uplink and downlink transmission.

[0227] In a possible implementation, when the second information is information F, the method further includes: the terminal device determines not to receive the second RS on a time domain resource used only for downlink transmission.

[0228] Specifically, the second information serves as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used for uplink transmission and downlink transmission, the terminal device can determine in a preconfigured manner not to receive the second RS on the time domain resources used only for downlink transmission. For example, the terminal device determines the RS for BFR from the second RS transmitted on the time domain resources used for uplink transmission and downlink transmission. Thus, the terminal device can determine the RS for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink transmission and downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0229] In a possible implementation, when the second information is information F, the method further includes: the terminal device receives fifth indication information, and the fifth indication information is used to indicate receiving the second RS on the time domain resources used for uplink transmission and downlink transmission.

[0230] Specifically, the second information is used as one of the bases for the terminal device to determine the RS for BFR. When the second information is the third signal quality information corresponding to the time domain resources used for uplink and downlink transmission, the terminal device can also receive fifth indication information indicating that the second RS is received on the time domain resources used for uplink and downlink transmission, so that the terminal device determines not to receive the second RS on the time domain resources used only for downlink transmission based on the fifth indication information. Thus, the terminal device can determine the RS for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used for uplink and downlink transmission), which can improve the accuracy of the determined RS for BFR while reducing the overhead and power consumption of the terminal device.

[0231] It should be understood that after the terminal device receives the fifth indication information sent by the network device, the terminal device can receive the second RS on the time domain resources used for uplink transmission and downlink transmission based on the fifth indication information. The fifth indication information can also be replaced by other implementations. For example, the fifth indication information sent by the network device can instruct the network device to send the second RS on the time domain resources used for uplink transmission and downlink transmission; for another example, the fifth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission; for another example, the fifth indication information sent by the network device can instruct the second RS sent by the network device to be carried on the time domain resources used for uplink transmission and downlink transmission, and instruct the second RS sent by the network device not to be carried on the time domain resources used only for downlink transmission.

[0232] In a possible implementation, the method may further include: the terminal device receiving sixth indication information, where the sixth indication information is used to indicate that the second information is one of information D to information F.

[0233] Specifically, the terminal device may also receive sixth indication information, so that the terminal device can determine that the second information is one of the above items based on the sixth indication information. Thus, through the sixth indication information, the terminal device can clearly determine the basis for determining the RS used for BFR, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the RS used for BFR, which can improve the accuracy of the determined RS used for BFR, thereby reducing unnecessary BFR processes, reducing overhead, and improving communication efficiency.

[0234] In one possible implementation, after the terminal device determines the RS for BFR from the second RS based on the second information, the method further includes: the terminal device sends seventh indication information and eighth indication information, the seventh indication information indicating the RS for BFR; wherein the eighth indication information indicates that the RS for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

[0235] Specifically, after the terminal device determines the RS for BFR from the second RS based on the second information, the terminal device may further send seventh indication information indicating the RS for BFR, and eighth indication information indicating the type of time domain resource corresponding to the RS for BFR. Thus, the network device may communicate with the terminal device using the BFR RS in the corresponding type of time unit based on the seventh indication information and the eighth indication information, to improve communication quality.

[0236] As shown in the implementation process shown in Figure 2a above, a network device can configure RSs for BFD and CBD. In the technical solution shown in Figure 3, the network device can at least send configuration information for configuring the RS for BFD. In actual applications, the network device can at least send configuration information for configuring the RS for CBD. This will be explained below in conjunction with the technical solution shown in Figure 4.

[0237] Please refer to Figure 4, which is a schematic diagram of the communication method provided by this application, and the method includes the following steps: The method shown in Figure 4 includes steps S401 and S402, and each step will be described below.

[0238] S401. The network device sends second configuration information, and the terminal device receives the second configuration information accordingly, wherein the second configuration information is used to configure resources of a second reference signal (RS) used for CBD.

[0239] Specifically, after the terminal device receives the second configuration information in step S401, the terminal device may receive the second RS based on the second configuration information, and the terminal device may determine signal quality information based on the received second RS.

[0240] S402. The terminal device sends seventh indication information and eighth indication information, and the network device receives the seventh indication information and eighth indication information accordingly. The seventh indication information indicates an RS for BFR, where the RS for BFR is determined based on signal quality information of the second RS, and the eighth indication information indicates that the RS for BFR is an RS carried on time domain resources used only for downlink transmission, or the eighth indication information indicates that the RS for BFR is an RS carried on time domain resources used for both uplink and downlink transmission.

[0241] Based on the technical solution shown in Figure 4, the second configuration information sent by the network device in step S401 configures the resources of the second RS for CBD, and the resources of the second RS include time domain resources used only for downlink transmission and time domain resources used for uplink and downlink transmission. Thereafter, after the terminal device determines the RS for BFR from the second RS, the terminal device may also send seventh indication information indicating the RS for BFR and eighth indication information indicating the type of time domain resources corresponding to the RS for BFR in step S402. Thus, the network device can use the BFR RS on the corresponding type of time unit based on the seventh indication information and the eighth indication information to communicate with the terminal device to improve communication quality.

[0242] It should be noted that, in the technical solution shown in FIG4 , the specific implementation process of each step can refer to the description of FIG3 and the related implementation process above.

[0243] As shown in the example of Figure 2d above, the RS sent by the network device may be periodic, and accordingly, the RS sent by the network device may be located in the time domain resources used only for downlink transmission, or may be located in the time domain resources used for uplink and downlink transmission. To this end, in the implementation process shown in Figure 3 above, the first configuration information sent by the network device can be used to configure the first RS carried by the time domain resources used only for downlink transmission, and the first RS carried by the time domain resources used for uplink and downlink transmission, and in step S302, the terminal device receives the first RS on the time domain resources of different time domain types configured by the first configuration information, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources. In the technical solution provided by the present application, in addition to the implementation of the first configuration information shown in Figure 3 above, the network device can also send different configuration information for different types of time domain resources, so that the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources. This will be introduced in conjunction with more drawings below.

[0244] Please refer to Figure 5, which is a schematic diagram of the communication method provided by this application, and the method includes the following steps: The method shown in Figure 5 includes steps S501 and S502, and each step will be described below.

[0245] S501. The network device sends third configuration information and fourth configuration information, and the terminal device receives the third configuration information and the fourth configuration information accordingly. The third configuration information is used to configure resources of a third reference signal (RS), and the fourth configuration information is used to configure resources of a fourth RS, both of which are used for beam failure detection (BFD); the resources of the third RS include time domain resources used only for downlink transmission, and the resources of the fourth RS include time domain resources used for both uplink and downlink transmission.

[0246] It should be noted that after the terminal device receives the third configuration information and the fourth configuration information in step S501, the terminal device may receive a third RS based on the third configuration information and determine the signal quality information of the third RS based on the received third RS. Similarly, the terminal device may receive a fourth RS based on the fourth configuration information and determine the signal quality information of the fourth RS based on the received fourth RS. Subsequently, the terminal device may perform step S502 based on the signal quality information of the third RS and the signal quality information of the fourth RS.

[0247] Figure 6 is an implementation example, taking the case where the period of the third RS configured by the network device through the third configuration information is 5 time units (the time unit can be a symbol, a time slot, a subframe, a frame, etc.), and the period of the fourth RS configured by the network device through the fourth configuration information is 5 time units as an example. The third RS can be carried on the four time domain resources 0, 5, 10, and 15 that are only used for downlink transmission (i.e., the type is "D"), and the fourth RS can be carried on the four time domain resources 2, 7, 12, and 17 that are used for uplink and downlink transmission (i.e., the type is "X"). Accordingly, in step S502, the terminal device can determine the signal quality information of the third RS based on the third RS received in time units 0, 5, 10, and 15, and the terminal device can determine the signal quality information of the fourth RS based on the fourth RS received in time units 2, 7, 12, and 17.

[0248] S502. The terminal device determines a BFI based on the signal quality information of the third RS and the signal quality information of the fourth RS.

[0249] In a possible implementation, the BFI determined by the terminal device in step S502 is one of the following:

[0250] A first BFI, the first BFI including a BFI determined based on the signal quality information of the third RS and a BFI determined based on the signal quality information of the fourth RS. For example, the BFI is determined based on the signal quality information of the third RS, and the BFI can be understood as a BFI corresponding to time domain resources used only for downlink transmission. The BFI is determined based on the signal quality information of the fourth RS, and the BFI can be understood as a BFI corresponding to time domain resources used for downlink and uplink transmission. When the third RS includes multiple RSs, the BFI is determined when the signal quality corresponding to the signal quality information corresponding to each RS in the third RS is lower than the threshold. Similarly, when the fourth RS includes multiple RSs, the same is true.

[0251] A second BFI is a BFI determined based on the signal quality information of the third RS and the signal quality information of the fourth RS.

[0252] Specifically, the BFI determined by the terminal device may include a first BFI, that is, the terminal device may determine the corresponding BFIs on the two types of time domain resources based on the reference signals on the two types of time domain resources, so that the terminal device determines the BFI on the corresponding type of time domain resources based on the third configuration information and the fourth configuration information, respectively. Since the terminal device independently determines the BFI on the two types of time domain resources, the accuracy of BFD based on the BFI can be further improved. Among them, the process of the terminal device determining the BFI based on the signal quality information of the third RS and executing BFR based on the BFI, and the process of the terminal device determining the BFI based on the signal quality information of the fourth RS and executing BFR based on the BFI, can refer to the implementation process of step 2, step 4a and step 4b shown in Figure 2b above. For example, after the terminal device determines the BFI based on the configured parameters such as beamFailureDetectionTimer and beamFailureInstanceMaxCount, the terminal device can send a random access process, or the terminal device indicates the candidate beam through the MAC CE to implement BFR.

[0253] In addition, the BFI determined by the terminal device may include a second BFI, that is, the terminal device may jointly determine the BFI based on the signal quality information of the reference signals on the two types of time domain resources. In other words, the terminal device jointly determines the BFI based on the third configuration information and the fourth configuration information, which can improve the accuracy of BFD based on the BFI. At the same time, because the BFI is only determined when the signal quality information of the third RS and the signal quality information of the fourth RS are both poor, the occurrence of the BFR process can be minimized, and the overhead can be further reduced to improve communication efficiency.

[0254] It should be understood that when the BFI determined by the terminal device includes the second BFI, the terminal device may determine the BFI based on the higher signal quality between the signal quality corresponding to the signal quality information of the third RS and the signal quality information of the fourth RS. For example, when the signal quality information is BLER, the signal quality information of the third RS is the third BLER, and the signal quality information of the fourth RS is the fourth BLER, then the higher signal quality is the signal quality corresponding to the minimum of the third BLER and the fourth BLER. When the signal quality is lower than or equal to the BLER threshold, the BFI is determined, thereby enabling the terminal device to jointly determine the BFI based on the signal quality information of the reference signals on two types of time domain resources. When the third RS includes multiple RSs and / or the fourth RS includes multiple RSs, the terminal device may determine the BFI based on the higher signal quality between the signal quality corresponding to the signal quality information of one or more RSs in the third RS and the signal quality information of one or more RSs in the fourth RS.

[0255] In another implementation, when the BFI determined by the terminal device includes a second BFI, the terminal device may determine the BFI based on the worse signal quality between the signal quality corresponding to the signal quality information of the third RS and the signal quality information of the fourth RS. For example, when the signal quality information is BLER, the signal quality information of the third RS is a third BLER, and the signal quality information of the fourth RS is a fourth BLER, then the worse signal quality is the signal quality corresponding to the maximum value between the third BLER and the fourth BLER. When this signal quality is lower than or equal to a BLER threshold, the BFI is determined, thereby enabling the terminal device to jointly determine the BFI based on the signal quality information of the reference signals on two types of time domain resources. When the third RS includes multiple RSs and / or the fourth RS includes multiple RSs, the terminal device may determine the BFI based on the worse signal quality between the signal quality corresponding to the signal quality information of one or more RSs in the third RS and the signal quality information of one or more RSs in the fourth RS.

[0256] In one possible implementation, in step S501, the resources of the third RS configured by the network device through the third configuration information do not include time domain resources for uplink transmission and downlink transmission; or, in the implementation process shown in Figure 5, before step S502, the method also includes: the terminal device determines not to receive the third RS on the time domain resources used for uplink transmission and downlink transmission.

[0257] Specifically, for the resources of the third RS configured by the third configuration information, the terminal device may not receive the third RS on time domain resources used for uplink and downlink transmissions. In other words, the terminal device may receive the third RS on time domain resources used only for downlink transmission. Thus, the terminal device can determine whether BFI occurs based on the signal quality information of the RS on the same type of time domain resources (i.e., time domain resources used only for downlink transmission), thereby reducing the overhead and power consumption of the terminal device.

[0258] In one possible implementation, in step S501, the resources of the fourth RS configured by the network device through the fourth configuration information do not include time domain resources used only for downlink transmission, or, in the implementation process shown in Figure 5, before step S502, the method also includes: the terminal device determines not to receive the fourth RS on the time domain resources used only for downlink transmission.

[0259] Specifically, for the resources of the fourth RS configured by the fourth configuration information, the terminal device may not receive the fourth RS on time domain resources used only for downlink transmission. In other words, the terminal device may receive the fourth RS on time domain resources used for both uplink and downlink transmission. Thus, the terminal device can determine whether BFI occurs by using signal quality information of RSs on the same type of time domain resources (i.e., time domain resources used for uplink and downlink transmission), thereby reducing the overhead and power consumption of the terminal device.

[0260] Based on the technical solution shown in Figure 5, the third configuration information received by the terminal device in step S501 configures resources for a third RS for BFD, and the resources for the third RS include time domain resources used only for downlink transmission. The fourth configuration information received by the terminal device in step S501 configures resources for a fourth RS for BFD, and the resources for the fourth RS include time domain resources used for both uplink and downlink transmission. Subsequently, in step S502, the terminal device can determine the BFI based on the signal quality information of the third RS and the signal quality information of the fourth RS. In other words, the network device can configure reference signals for BFD on different types of time domain resources. Therefore, because the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in this technical solution, the terminal device can determine the signal quality information of the reference signals on the same type of time domain resources and use this signal quality information as the basis for determining the BFI. This improves the accuracy of BFD based on the BFI, thereby reducing unnecessary BFR processes caused by low BFD accuracy, and reducing overhead to improve communication efficiency.

[0261] Steps S501 and S502 above describe the implementation process of configuring the RS for BFD using the third and fourth configuration information. As shown in the implementation process shown in FIG2a , a network device can also configure the RS for CBD. The following describes the implementation process of how a terminal device determines the RS for BFD after receiving the RS for CBD.

[0262] In one possible implementation, in the implementation process shown in Figure 5, the method also includes: the terminal device receives fifth configuration information and sixth configuration information, the fifth configuration information is used to configure the resources of the fifth RS, and the sixth configuration information is used to configure the resources of the sixth RS, and the fifth RS and the sixth RS are both used for CBD; wherein, the resources of the fifth RS include time domain resources used only for downlink transmission, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission; the terminal device determines the RS used for BFR based on the signal quality information of the fifth RS and the signal quality information of the sixth RS.

[0263] Specifically, the fifth configuration information received by the terminal device configures the resources of the fifth RS for CBD, and the resources of the fifth RS include time domain resources used only for downlink transmission. The sixth configuration information received by the terminal device configures the resources of the sixth RS for CDB, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission. The terminal device can subsequently determine the BFI based on the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the network device can configure reference signals for CBD respectively for different types of time domain resources. Therefore, since the interference to the transmission of reference signals on different types of time domain resources is likely to be different, in the above technical solution, the terminal device can determine the signal quality information of the reference signal on the same type of time domain resources, and use the signal quality information as the basis for determining the RS for BFR, which can improve the accuracy of the determined RS for BFR, thereby reducing unnecessary BFR processes and reducing overhead to improve communication efficiency.

[0264] In a possible implementation, the RS for BFR includes one of the following:

[0265] Item 1: the RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS;

[0266] The second item: the RS corresponding to the signal quality information having better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS.

[0267] Specifically, the RS for BFR determined by the terminal device may include the RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS, that is, the terminal device can respectively determine the RS for BFR corresponding to the two types of time domain resources based on the reference signals on the two types of time domain resources, so that the terminal device determines the RS for BFR on the corresponding type of time domain resources based on the fifth configuration information and the sixth configuration information, respectively. Since the terminal device independently determines the RS for BFR on the two types of time domain resources, the accuracy of the determined RS for BFR can be further improved.

[0268] In addition, the RS for BFR determined by the terminal device includes the RS corresponding to the signal quality information with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the terminal device jointly determines the RS for BFR based on the fifth configuration information and the sixth configuration information, which can improve the accuracy of the determined RS for BFR. At the same time, because the terminal device determines the RS with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS as the RS for BFR, it can also use the RS with better signal quality as the RS for BFR as much as possible, thereby improving the communication quality of subsequent communications based on the RS for BFR.

[0269] In one possible implementation, the resources of the fifth RS configured by the network device through the fifth configuration information do not include time domain resources for uplink transmission and downlink transmission; or, before the terminal device determines the RS for BFR, the method also includes: the terminal device determines not to receive the fifth RS on the time domain resources used for uplink transmission and downlink transmission.

[0270] Specifically, for the resources of the fifth RS configured by the fifth configuration information, the terminal device may not receive the fifth RS on the time domain resources used for uplink transmission and downlink transmission. In other words, the terminal device may receive the fifth RS on the time domain resources used only for downlink transmission. Thus, the terminal device can determine the RS used for BFR through the signal quality information of the RS on the same type of time domain resources (i.e., the time domain resources used only for downlink transmission), which can reduce the overhead and power consumption of the terminal device.

[0271] In one possible implementation, the resources of the sixth RS configured by the network device through the sixth configuration information do not include time domain resources used only for downlink transmission; or, before the terminal device determines the RS for BFR, the method also includes: the terminal device determines not to receive the sixth RS on the time domain resources used only for downlink transmission.

[0272] Specifically, for the resources of the sixth RS configured by the sixth configuration information, the terminal device may not receive the sixth RS on time domain resources used only for downlink transmission. In other words, the terminal device may receive the sixth RS on time domain resources used for uplink and downlink transmission. Thus, the terminal device can determine the RS used for BFR by using the signal quality information of the RS on the same type of time domain resources (i.e., time domain resources used for uplink and downlink transmission), which can reduce the overhead and power consumption of the terminal device.

[0273] In one possible implementation, after the terminal device determines the RS for BFR, the method further includes: the terminal device sends seventh indication information and eighth indication information, the seventh indication information indicating the RS for BFR; wherein the eighth indication information indicates that the RS for BFR is an RS carried on time domain resources used only for downlink transmission, or the eighth indication information indicates that the RS for BFR is an RS carried on time domain resources used for uplink transmission and downlink transmission.

[0274] Specifically, after the terminal device determines the RS for BFR, the terminal device may also send seventh indication information indicating the RS for BFR, and eighth indication information indicating the type of time domain resource corresponding to the RS for BFR. Thus, the network device can communicate with the terminal device using the BFR RS in the corresponding type of time unit based on the seventh indication information and the eighth indication information to improve communication quality.

[0275] As shown in the implementation process shown in Figure 2a above, a network device can configure RSs for BFD and CBD. In the technical solution shown in Figure 5, the network device can at least send configuration information for configuring the RS for BFD. In actual applications, the network device can at least send configuration information for configuring the RS for CBD. This will be explained below in conjunction with the technical solution shown in Figure 7.

[0276] Please refer to Figure 7, which is a schematic diagram of the communication method provided by this application, which includes the following steps: The method shown in Figure 7 includes steps S701 and S702, and each step will be described below.

[0277] S701. The network device sends fifth and sixth configuration information, and the terminal device receives the fifth and sixth configuration information accordingly. The fifth configuration information is used to configure resources of a fifth RS, where the resources of the fifth RS include time domain resources used only for downlink transmission, and the sixth configuration information is used to configure resources of a sixth RS, where both the fifth RS and the sixth RS are used for CBD.

[0278] S702. The terminal device sends seventh and eighth indication information, and the network device receives the seventh and eighth indication information accordingly. The seventh indication information indicates an RS for BFR, which is determined based on the signal quality information of the fifth and sixth RSs. Furthermore, the eighth indication information indicates that the RS for BFR is an RS carried on time domain resources used only for downlink transmission, or the eighth indication information indicates that the RS for BFR is an RS carried on time domain resources used for both uplink and downlink transmission.

[0279] In a possible implementation, the RS for BFR includes one of the following:

[0280] First item: the RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS;

[0281] Second item: the RS corresponding to the signal quality information having better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS.

[0282] Specifically, the RS for BFR determined by the terminal device may include the RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS, that is, the terminal device can respectively determine the RS for BFR corresponding to the two types of time domain resources based on the reference signals on the two types of time domain resources, so that the terminal device determines the RS for BFR on the corresponding type of time domain resources based on the fifth configuration information and the sixth configuration information, respectively. Since the terminal device independently determines the RS for BFR on the two types of time domain resources, the accuracy of the determined RS for BFR can be further improved.

[0283] In addition, the RS for BFR determined by the terminal device includes the RS corresponding to the signal quality information with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the terminal device jointly determines the RS for BFR based on the fifth configuration information and the sixth configuration information, which can improve the accuracy of the determined RS for BFR. At the same time, because the terminal device determines the RS with better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS as the RS for BFR, it can also use the RS with better signal quality as the RS for BFR as much as possible, thereby improving the communication quality of subsequent communications based on the RS for BFR.

[0284] Based on the technical solution shown in Figure 7, the fifth configuration information sent by the network device in step S701 configures resources for the fifth RS for CBD, and the resources for the fifth RS include time domain resources used only for downlink transmission. The sixth configuration information sent by the network device in step S701 configures resources for the sixth RS for CBD, and the resources for the sixth RS include time domain resources used for both uplink and downlink transmission. Subsequently, in step S702, the terminal device can determine the RS for BFR based on the signal quality information of the fifth RS and the signal quality information of the sixth RS. In other words, the network device can configure reference signals for CBD separately for different types of time domain resources. Therefore, because the transmission of reference signals on different types of time domain resources is likely to be subject to different interference, in this technical solution, the terminal device can determine the signal quality information of the reference signals on the same type of time domain resources and use this signal quality information as the basis for determining the RS for BFR. This can improve the accuracy of the RS determined for BFR, thereby reducing unnecessary BFR processes and lowering overhead, thereby improving communication efficiency.

[0285] It should be noted that, in the technical solution shown in FIG7 , the specific implementation process of each step can refer to the description of FIG5 and the related implementation process.

[0286] In one possible implementation, the fourth configuration information sent by the network device in step S501 may also be used to configure the frequency domain resources of the fourth RS on the time domain resources used for uplink transmission and downlink transmission. Similarly, the sixth configuration information sent by the network device in step S701 may also be used to configure the frequency domain resources of the sixth RS on the time domain resources used for uplink transmission and downlink transmission.

[0287] In an implementation example, the frequency domain resources of the fourth RS (or sixth RS) may include frequency domain resources across subbands, that is, include at least two downlink subbands, that is, the frequency domain resources of the fourth RS (or sixth RS) are not continuous in the frequency domain. For example, in Figure 6, the fourth RS (or sixth RS) is in time slots 2 / 7 / 12 / 17, and the frequency domain resources occupied by the fourth RS (or sixth RS) may be two downlink bandwidths without shaded parts, and the bandwidth of the shaded part may be the bandwidth of the frequency band used only for uplink transmission or the bandwidth of the protection band (which can be understood in conjunction with the example described in Figure 2c above). In this way, while being able to adapt to signal transmission on time domain resources used for uplink and downlink transmissions, it can also enable network equipment to configure RS on as many frequency domain resources as possible to improve the reception success rate of RS.

[0288] In another implementation example, the frequency domain resources of the fourth RS (or sixth RS) may include the frequency domain resources of a subband. In other words, the frequency domain resources do not include frequency domain resources across subbands, that is, the frequency domain resources of the fourth RS (or sixth RS) are continuous in the frequency domain. In this way, the interference received by the RS received by the terminal device can be reduced as much as possible to improve the RS reception success rate.

[0289] It should be noted that the configuration method of frequency domain resources using the fourth configuration information or the sixth configuration information can also be used in other embodiments. For example, the frequency domain resources of the first RS configured by the first configuration information and the frequency domain resources of the second RS configured by the second configuration information can also refer to this configuration method.

[0290] Referring to FIG. 8 , an embodiment of the present application provides a communication device 800 , which includes an interface unit 801 and a processing unit 802 .

[0291] It should be understood that the communication device 800 can implement the functions of any communication device (such as a terminal device or a network device) in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In the embodiment of the present application, the communication device 800 can be any communication device in the above method embodiments, or it can be an integrated circuit or component, such as a chip, within any communication device in the above method embodiments.

[0292] In one possible implementation, when the device 800 is used to execute the method executed by the terminal device in the aforementioned embodiment, the interface unit 801 receives first configuration information, and the first configuration information is used to configure the resources of the first reference signal RS, and the first RS is used for beam failure detection BFD; the processing unit 802 determines the beam failure event BFI based on the first information, and the first information is one of the following: first signal quality information and second signal quality information; the first signal quality information; the second signal quality information; wherein the first signal quality information is determined based on the first RS that carries the time domain resources used only for downlink transmission in the resources of the first RS, and the second signal quality information is determined based on the first RS that carries the time domain resources used for uplink and downlink transmission in the resources of the first RS.

[0293] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the processing unit 802 is used to determine the first configuration information; the interface unit 801 is used to send the first configuration information, and the first configuration information is used to configure the resources of the first reference signal RS, and the first RS is used for beam failure detection BFD.

[0294] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the processing unit 802 is used to determine the second configuration information; the interface unit 801 is used to send the second configuration information, and the second configuration information is used to configure the resources of the second reference signal RS, and the second RS is used for candidate beam detection CBD.

[0295] In another possible implementation, when the device 800 is used to execute the method executed by the terminal device in the aforementioned embodiment, the interface unit 801 receives third configuration information and fourth configuration information, the third configuration information is used to configure the resources of the third reference signal RS, and the fourth configuration information is used to configure the resources of the fourth RS, and the third RS and the fourth RS are both used for beam failure detection BFD; wherein, the resources of the third RS include time domain resources used only for downlink transmission, and the resources of the fourth RS include time domain resources used for uplink transmission and downlink transmission; the processing unit 802 determines the beam failure event BFI based on the signal quality information of the third RS and the signal quality information of the fourth RS.

[0296] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the processing unit 802 determines third configuration information, and the third configuration information is used to configure the resources of the third reference signal RS, and the third RS is used for beam failure detection BFD; wherein, the resources of the third RS include time domain resources used only for downlink transmission; the interface unit 801 sends the third configuration information; wherein, the resources of the third RS do not include time domain resources for uplink transmission and for downlink transmission, or, the processing unit 802 determines not to send the third RS on the time domain resources used for uplink transmission and downlink transmission.

[0297] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the processing unit 802 determines fourth configuration information, and the fourth configuration information is used to configure the resources of the fourth RS, and the fourth RS is used for beam failure detection BFD; wherein, the resources of the fourth RS include time domain resources for uplink transmission and downlink transmission; the interface unit 801 sends the fourth configuration information; wherein, the resources of the fourth RS do not include time domain resources used only for downlink transmission, or, the processing unit 802 determines not to send the fourth RS on the time domain resources used only for downlink transmission.

[0298] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the processing unit 802 determines the fifth configuration information, and the fifth configuration information is used to configure the resources of the fifth RS, and the fifth RS is used for candidate beam detection CBD; wherein, the resources of the fifth RS include time domain resources used only for downlink transmission; the interface unit 801 sends the fifth configuration information; wherein, the resources of the fifth RS do not include time domain resources for uplink transmission and for downlink transmission, or, the processing unit 802 determines not to send the fifth RS on the time domain resources used for uplink transmission and downlink transmission.

[0299] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the processing unit 802 determines the sixth configuration information, and the sixth configuration information is used to configure the resources of the sixth RS, and the sixth RS is used for candidate beam detection CBD; wherein, the resources of the sixth RS include time domain resources for uplink transmission and downlink transmission; the interface unit 801 sends the sixth configuration information; wherein, the resources of the sixth RS do not include time domain resources used only for downlink transmission, or, the processing unit 802 determines not to send the sixth RS on the time domain resources used only for downlink transmission.

[0300] In another possible implementation, when the device 800 is used to execute the method executed by the network device in the aforementioned embodiment, the interface unit 801 sends fifth configuration information and sixth configuration information, the fifth configuration information is used to configure the resources of the fifth RS, and the sixth configuration information is used to configure the resources of the sixth RS, and the fifth RS and the sixth RS are both used for candidate beam detection CBD; wherein, the resources of the fifth RS include time domain resources used only for downlink transmission, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission; the interface unit 801 receives seventh indication information and eighth indication information, the seventh indication information indicates the RS used for BFR, and the RS used for BFR is determined based on the signal quality information of the fifth RS and the signal quality information of the sixth RS; wherein, the eighth indication information indicates that the RS used for BFR is an RS carried on the time domain resources used only for downlink transmission, or, the eighth indication information indicates that the RS used for BFR is an RS carried on the time domain resources used for uplink transmission and downlink transmission.

[0301] It should be noted that the information execution process of the units of the above-mentioned communication device 800 and the corresponding technical effects, etc., can be specifically referred to the description in the method embodiment shown above in this application, and will not be repeated here.

[0302] Please refer to Fig. 9, which is another schematic structural diagram of a communication device 900 provided in this application. The communication device 900 at least includes an input and output interface 901. The communication device 900 may be a chip or an integrated circuit.

[0303] Optionally, the communication device further includes a logic circuit 902 .

[0304] The interface unit 801 shown in FIG8 may be a communication interface, which may be the input / output interface 901 in FIG9 , which may include an input interface and an output interface. Alternatively, the communication interface may be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0305] Among them, the logic circuit 902 and the input and output interface 901 can execute the method executed by any communication device (such as terminal equipment or network equipment) in the aforementioned method embodiments and achieve corresponding beneficial effects, which will not be repeated here.

[0306] In a possible implementation, the processing unit 802 shown in FIG. 8 may be the logic circuit 902 in FIG. 9 .

[0307] Optionally, the logic circuit 902 may be a processing device, and the functions of the processing device may be partially or entirely implemented by software. The functions of the processing device may be partially or entirely implemented by software.

[0308] Optionally, the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and / or steps in any one of the method embodiments.

[0309] Alternatively, the processing device may include only a processor. A memory for storing the computer program is located outside the processing device, and the processor is connected to the memory via circuits / wires to read and execute the computer program stored in the memory. The memory and processor may be integrated or physically separate.

[0310] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processor units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0311] Please refer to FIG. 10 , which shows a communication device 1000 involved in the above embodiments provided in an embodiment of the present application. Specifically, the communication device 1000 may be a communication device serving as a terminal device in the above embodiments.

[0312] Herein, a possible logical structure diagram of the communication device 1000 is shown. The communication device 1000 may include but is not limited to at least one processor 1001 and a communication interface 1002 .

[0313] Further optionally, the device may also include at least one of a memory 1003 and a bus 1004. In an embodiment of the present application, the at least one processor 1001 is used to control and process the actions of the communication device 1000.

[0314] In addition, the processor 1001 can 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 device, a transistor logic device, a hardware component, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can 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. Those skilled in the art will 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 aforementioned method embodiments and will not be repeated here.

[0315] It should be noted that the communication device 1000 shown in Figure 10 can be specifically used to implement the steps implemented by the terminal device in the aforementioned method embodiment and achieve the corresponding technical effects of the terminal device. The specific implementation methods of the communication device shown in Figure 10 can refer to the description in the aforementioned method embodiment and will not be repeated here.

[0316] Please refer to Figure 11, which is a structural diagram of the communication device involved in the above embodiments provided in an embodiment of the present application. The communication device can specifically be the network device in the above embodiments, wherein the structure of the communication device can refer to the structure shown in Figure 11.

[0317] The communication device includes at least one processor 1111 and at least one network interface 1114 .

[0318] Optionally, the communication device further includes at least one memory 1112, at least one transceiver 1113 and one or more antennas 1115. The processor 1111, the memory 1112, the transceiver 1113 and the network interface 1114 are connected, for example, via a bus. In an embodiment of the present application, the connection may include various interfaces, transmission lines or buses, etc., which are not limited in this embodiment. The antenna 1115 is connected to the transceiver 1113. The network interface 1114 is used to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 1114 may include a network interface between the communication device and the core network device, such as an S1 interface, and the network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as an X2 or Xn interface.

[0319] Processor 1111 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process software program data, for example, to support the communication device in performing the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit. The baseband processor is primarily used to process communication protocols and communication data, while the central processing unit is primarily used to control the entire terminal device, execute software programs, and process software program data. Processor 1111 in Figure 11 may integrate the functions of both a baseband processor and a central processing unit. Those skilled in the art will appreciate that the baseband processor and the central processing unit may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to accommodate different network standards, multiple central processing units to enhance its processing capabilities, and various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored in memory as a software program, which is executed by the processor to implement the baseband processing functionality.

[0320] The memory is primarily used to store software programs and data. Memory 1112 can exist independently and be connected to processor 1111. Alternatively, memory 1112 can be integrated with processor 1111, for example, within a single chip. Memory 1112 can store program code for executing the technical solutions of the embodiments of the present application, and execution is controlled by processor 1111. The various computer program codes executed can also be considered drivers for processor 1111.

[0321] Figure 11 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device. The memory may be a storage element on the same chip as the processor, i.e., an on-chip storage element, or an independent storage element, which is not limited in the present embodiment.

[0322] The transceiver 1113 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal. The transceiver 1113 can be connected to the antenna 1115. The transceiver 1113 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1115 can receive radio frequency signals. The receiver Rx of the transceiver 1113 is used to receive the radio frequency signal from the antenna, convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or digital intermediate frequency signal to the processor 1111 so that the processor 1111 can further process the digital baseband signal or digital intermediate frequency signal, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 1113 is also used to receive a modulated digital baseband signal or digital intermediate frequency signal from the processor 1111, convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and transmit the radio frequency signal through one or more antennas 1115. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal. The order of the up-mixing and digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as digital signals.

[0323] The transceiver 1113 may also be referred to as an interface unit, a transceiver unit, a transceiver, a transceiver device, an interface module, etc. Optionally, a device in the interface unit that implements a receiving function may be referred to as a receiving unit, and a device in the interface unit that implements a transmitting function may be referred to as a transmitting unit. That is, the interface unit includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0324] It should be noted that the communication device shown in Figure 11 can be specifically used to implement the steps implemented by the network device in the aforementioned method embodiment, and to achieve the corresponding technical effects of the network device. The specific implementation methods of the communication device shown in Figure 11 can refer to the descriptions in the aforementioned various method embodiments, and will not be repeated here one by one.

[0325] An embodiment of the present application also provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a computer, the processor executes the method described in any possible implementation method of any communication device (such as a terminal device or a network device) in the aforementioned method embodiment.

[0326] An embodiment of the present application also provides a computer program product (or computer program), including instructions. When the instructions in the computer program product are executed by a processor, the processor executes a method that may be implemented by any communication device (such as a terminal device or a network device) in the above method embodiment.

[0327] An embodiment of the present application also provides a chip system, which includes at least one processor for implementing the functions involved in the possible implementation methods of any communication device (such as a terminal device or a network device) in the above method embodiments.

[0328] Optionally, the chip system further includes an interface circuit that provides program instructions and / or data to the at least one processor. In one possible design, the chip system may further include a memory for storing program instructions and data necessary for the terminal device. The chip system may be composed of a chip alone or may include a chip and other discrete components.

[0329] In one possible design, the chip system may further include a memory for storing the necessary program instructions and data of any communication device in the above method embodiment. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0330] An embodiment of the present application also provides a communication system, and the network system architecture includes the terminal device and network device in any of the above embodiments.

[0331] In the several embodiments provided in this 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 schematic. For example, the division of the units is a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0332] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0333] In addition, the functional units in the various embodiments of the present application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0334] The above description is merely a specific implementation of the embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the embodiments of the present application should be included in the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: receiving first configuration information, where the first configuration information is used to configure resources of a first reference signal RS, where the first RS is used for beam failure detection BFD; A beam failure event BFI is determined based on first information, where the first information is one of the following: first signal quality information and second signal quality information; the first signal quality information; the second signal quality information; The first signal quality information is determined based on the first RS that carries time domain resources used only for downlink transmission in the resources of the first RS, and the second signal quality information is determined based on the first RS that carries time domain resources used for uplink and downlink transmission in the resources of the first RS.

2. The method according to claim 1, characterized in that In a case where the first information is the first signal quality information and the second signal quality information, determining the BFI based on the first information includes: The BFI is determined when the signal quality corresponding to the first signal quality information is lower than or equal to a first threshold and the signal quality corresponding to the second signal quality information is lower than or equal to a second threshold.

3. The method according to claim 1, characterized in that The method further comprises: When the first information is the first signal quality information, it is determined not to receive the first RS on time domain resources used for uplink transmission and downlink transmission.

4. The method according to claim 1 or 3, characterized in that: In a case where the first information is the first signal quality information, the method further includes: First indication information is received, where the first indication information indicates receiving the first RS on a time domain resource used only for downlink transmission.

5. The method according to claim 1, characterized in that: The method further comprises: In a case where the first information is the second signal quality information, it is determined not to receive the first RS on a time domain resource used only for downlink transmission.

6. The method according to claim 1 or 5, characterized in that: In a case where the first information is the second signal quality information, the method further includes: Second indication information is received, where the second indication information indicates receiving the first RS on a time domain resource used for uplink transmission and downlink transmission.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Receive third indication information, where the third indication information is used to indicate that the first information is one of the following: the first signal quality information and the second signal quality information; the first signal quality information; The second signal quality information.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: receiving second configuration information, where the second configuration information is used to configure resources of a second RS, where the second RS is used for candidate beam detection CBD; The method further comprises: An RS for beam failure recovery BFR is determined from the second RS based on second information, where the second information is one of the following: third signal quality information and fourth signal quality information; the third signal quality information; the fourth signal quality information; The third signal quality information is based on the time domain resource carried only for downlink transmission in the resources of the second RS. The fourth signal quality information is determined by the second RS, and the fourth signal quality information is determined based on the second RS carried by the time domain resources used for uplink transmission and downlink transmission in the resources of the second RS.

9. The method according to claim 8, characterized in that In a case where the second information is the third signal quality information and the fourth signal quality information, the determining the RS for BFR from the second RS based on the second information includes: The RS corresponding to the signal quality information with better signal quality between the third signal quality information and the fourth signal quality information is determined as the RS for BFR.

10. The method according to claim 8, characterized in that The method further comprises: In a case where the second information is the third signal quality information, it is determined not to receive the second RS on a time domain resource used for uplink transmission and downlink transmission.

11. The method according to claim 8 or 10, characterized in that: In a case where the second information is the third signal quality information, the method further includes: Receive fourth indication information, where the fourth indication information is used to indicate receiving the second RS on a time domain resource used only for downlink transmission.

12. The method according to claim 8, characterized in that The method further comprises: In a case where the second information is the fourth signal quality information, it is determined not to receive the second RS on a time domain resource used only for downlink transmission.

13. The method according to claim 8 or 12, characterized in that: In a case where the second information is the fourth signal quality information, the method further includes: Fifth indication information is received, where the fifth indication information is used to indicate receiving the second RS on a time domain resource used for uplink transmission and downlink transmission.

14. The method according to any one of claims 8 to 13, characterized in that The method further comprises: Receive sixth indication information, where the sixth indication information is used to indicate that the second information is one of the following: the third signal quality information and the fourth signal quality information; the third signal quality information; The fourth signal quality information.

15. The method according to any one of claims 8 to 14, characterized in that After determining the RS for BFR from the second RS based on the second information, the method further includes: Sending seventh indication information and eighth indication information, wherein the seventh indication information indicates the RS used for BFR; The eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

16. A communication method, characterized in that: include: Sending second configuration information, where the second configuration information is used to configure resources of a second reference signal RS, where the second RS is used for candidate beam detection CBD; receiving seventh indication information and eighth indication information, wherein the seventh indication information indicates an RS used for BFR, and the RS used for BFR is determined based on signal quality information of the second RS; The eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

17. A communication method, characterized in that: include: receiving third configuration information and fourth configuration information, wherein the third configuration information is used to configure resources of a third reference signal RS, and the fourth configuration information is used to configure resources of a fourth RS, and both the third RS and the fourth RS are used for beam failure detection BFD; wherein the third The resources of the third RS include time domain resources used only for downlink transmission, and the resources of the fourth RS include time domain resources used for uplink transmission and downlink transmission; A beam failure event (BFI) is determined based on the signal quality information of the third RS and the signal quality information of the fourth RS.

18. The method according to claim 17, characterized in that The BFI is one of the following: a first BFI, the first BFI comprising a BFI determined based on the signal quality information of the third RS and a BFI determined based on the signal quality information of the fourth RS; A second BFI, where the second BFI is a BFI determined based on the signal quality information of the third RS and the signal quality information of the fourth RS.

19. The method according to claim 17 or 18, characterized in that The resources of the third RS do not include time domain resources for uplink transmission and downlink transmission; or, The method further includes: determining not to receive the third RS on time domain resources used for uplink transmission and downlink transmission.

20. The method according to any one of claims 17 to 19, characterized in that The resources of the fourth RS do not include time domain resources used only for downlink transmission, or, The method further includes: determining not to receive the fourth RS on a time domain resource used only for downlink transmission.

21. The method according to any one of claims 17 to 20, characterized in that The method further comprises: Receive fifth configuration information and sixth configuration information, where the fifth configuration information is used to configure resources of a fifth RS, and the sixth configuration information is used to configure resources of a sixth RS, where both the fifth RS and the sixth RS are used for candidate beam detection CBD; wherein the resources of the fifth RS include time domain resources used only for downlink transmission, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission; An RS for beam failure recovery (BFR) is determined based on the signal quality information of the fifth RS and the signal quality information of the sixth RS.

22. The method according to claim 21, characterized in that The RS for BFR includes one of the following: The RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS; The RS corresponding to the signal quality information having better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS.

23. The method according to claim 21 or 22, characterized in that The resources of the fifth RS do not include time domain resources for uplink transmission and downlink transmission; or, The method further includes: determining not to receive the fifth RS on time domain resources used for uplink transmission and downlink transmission.

24. The method according to any one of claims 21 to 23, characterized in that The resources of the sixth RS do not include time domain resources used only for downlink transmission; or, The method further includes: determining not to receive the sixth RS on a time domain resource used only for downlink transmission.

25. The method according to any one of claims 21 to 24, further comprising: Sending seventh indication information and eighth indication information, wherein the seventh indication information indicates the RS used for BFR; The eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

26. A communication method, characterized in that: include: Sending fifth configuration information and sixth configuration information, where the fifth configuration information is used to configure resources of a fifth RS, and the sixth configuration information is used to configure resources of a sixth RS, where both the fifth RS and the sixth RS are used for candidate beam detection CBD; wherein the resources of the fifth RS include time domain resources used only for downlink transmission, and the resources of the sixth RS include time domain resources used for uplink transmission and downlink transmission; receiving seventh indication information and eighth indication information, wherein the seventh indication information indicates an RS for BFR, and the RS for BFR is based on determined based on the signal quality information of the fifth RS and the signal quality information of the sixth RS; The eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used only for downlink transmission, or the eighth indication information indicates that the RS used for BFR is an RS carried on a time domain resource used for uplink transmission and downlink transmission.

27. The method according to claim 26, characterized in that The RS for BFR includes one of the following: The RS corresponding to the signal quality information with better signal quality in the signal quality information of the fifth RS, and the RS corresponding to the signal quality information with better signal quality in the signal quality information of the sixth RS; The RS corresponding to the signal quality information having better signal quality between the signal quality information of the fifth RS and the signal quality information of the sixth RS.

28. A communication device, characterized in that: Comprising means for performing the method as claimed in any one of claims 1 to 27.

29. A communication device, characterized in that: The method comprises at least one processor coupled to a memory; the at least one processor is configured to execute the method according to any one of claims 1 to 27.

30. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction, and when the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 27 is implemented.

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