Beam recovery method, beam failure detection method, and related apparatuses

Abstract

Embodiments of the present application disclose a beam recovery method, which is used for beam recovery of a neighbor cell of a terminal device and improves communication performance. The method comprises the following steps: a terminal device determines a target physical random access channel (PRACH) resource associated with a target reference signal resource from at least one PRACH resource, the target reference signal resource being a reference signal resource corresponding to a target candidate beam of a neighbor cell of the terminal device; and the terminal device initiates beam recovery of the neighbor cell based on the target PRACH resource.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a beam recovery method, a beam failure detection method, and related apparatus. Background Technology

[0002] Fifth-generation (5G) mobile communication systems can employ high-frequency communication, specifically ultra-high-frequency (>6GHz) signals for data transmission. A major problem with high-frequency communication is the sharp decrease in signal energy with transmission distance, resulting in short transmission ranges. To overcome this issue, high-frequency communication uses analog beamforming technology. By weighting the antenna array, the signal energy is concentrated within a small angular range, forming a beam-like signal (called an analog beam, or simply a beam), thereby increasing the transmission distance.

[0003] Terminal devices can communicate with network devices via the serving cell's beam. When this beam is blocked, communication between the terminal device and the network device will be disrupted. The terminal device can identify a new beam and initiate a beam recovery request to the network device. The network device can then send a beam recovery response back to the terminal device, enabling both devices to find a beam that meets communication quality requirements.

[0004] In addition to communicating with network devices through the beam of the serving cell, terminal devices can also communicate with network devices through the beams of neighboring cells. In this scenario, how the terminal device can restore the beam of a neighboring cell when the neighboring cell's beam fails is a problem worth considering. Summary of the Invention

[0005] This application provides a beam recovery method, a beam failure detection method, and related apparatus for beam recovery and detection in neighboring cells of a terminal device. This enables the terminal device to support beam failure detection and recovery in neighboring cells, thereby improving communication performance.

[0006] The first aspect of this application provides a beam recovery method, comprising:

[0007] The terminal device determines a target PRACH resource associated with a target reference signal resource from at least one physical random access channel (PRACH) resource. This target PRACH resource is the reference signal resource corresponding to the target candidate beam of the terminal device's neighboring cell. Then, the terminal device initiates beam recovery of the neighboring cell based on this target PRACH resource.

[0008] In the above technical solution, the terminal device can determine the target PRACH resource associated with the target reference signal resource from at least one PRACH resource. If the terminal device has only one PRACH resource, it directly uses that PRACH resource as the target PRACH resource. The terminal device initiates beam recovery for neighboring cells based on this target PRACH resource. This enables the terminal device to initiate beam recovery for neighboring cells, supporting beam recovery for neighboring cells and improving communication performance.

[0009] In one possible implementation, the at least one PRACH resource includes: at least one contention-free random access (CFRA) resource of a neighboring cell dedicated to beam recovery;

[0010] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and each reference signal resource of a neighboring cell corresponds to a candidate beam of the neighboring cell.

[0011] This implementation illustrates one possible way to implement at least one PRACH resource of the terminal device. The network device can configure at least one CFRA resource dedicated to beam recovery for the terminal device's neighboring cells. This facilitates beam recovery of neighboring cells by the terminal device based on the CFRA resource. This enables the terminal device to support beam recovery of neighboring cells, thereby improving the communication performance of the terminal device.

[0012] In another possible implementation, the at least one PRACH resource includes: at least one contention-based random access (CBRA) resource from a neighboring cell;

[0013] Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0014] This implementation illustrates another possible approach for at least one PRACH resource of the terminal device. The network device can configure CBRA resources for the terminal device's neighboring cells. This facilitates beam recovery of neighboring cells by the terminal device based on these CBRA resources. This enables the terminal device to support beam recovery of neighboring cells, thereby improving its communication performance. It enriches the implementation methods of the solution and enhances the robustness of the terminal device in performing beam recovery of neighboring cells.

[0015] In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource of the serving cell of the terminal device dedicated to beam recovery;

[0016] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0017] This implementation illustrates another possible implementation of at least one PRACH resource of the terminal device. The network device can configure CFRA resources for the serving cell of the terminal device. These CFRA resources can be associated with reference signal resources of neighboring cells, thereby facilitating beam recovery of neighboring cells by the terminal device based on these CFRA resources. This enables the terminal device to support beam recovery of neighboring cells, improving its communication performance. The CFRA resource is for the serving cell and is used to initiate random access to the serving cell. The CFRA resource is also associated with reference signal resources of neighboring cells, enabling the terminal device to support beam recovery of neighboring cells, thus improving its communication performance and increasing the utilization rate of PRACH resources.

[0018] In another possible implementation, each CFRA resource is also associated with a reference signal resource of the serving cell, different CFRA resources are associated with different reference signal resources of the serving cell, and each reference signal resource of the serving cell is associated with a candidate beam of the serving cell. In this implementation, the CFRA resources of the serving cell are also associated with the reference signal resources of the serving cell for beam recovery of the serving cell. This is beneficial for improving resource utilization.

[0019] Another possible implementation includes:

[0020] If the serving beam of the terminal device fails, and the reference signal resource corresponding to the serving beam is the reference signal resource of a neighboring cell, then the terminal device shall perform the action of determining the target PRACH resource associated with the target reference signal resource from the PRACH resources.

[0021] In this implementation, the terminal device can first determine whether the serving beam is a beam of a neighboring cell. If so, the terminal device performs the action described above of determining the target PRACH resource associated with the target reference signal resource from the PRACH resources. This facilitates the terminal device in selecting the target PRACH resource that can be used for beam recovery of the neighboring cell, and performing beam recovery of the neighboring cell based on the target PRACH resource.

[0022] In another possible implementation, before the terminal device determines the target PRACH resource associated with the target reference signal resource from at least one PRACH resource, the method further includes:

[0023] The terminal device measures the reference signal resources in the first resource set and obtains the measurement results. The first resource set includes one or more reference signal resources of neighboring cells, and each reference signal resource corresponds to a candidate beam of a neighboring cell. The terminal device determines the target reference signal resource from one or more reference signal resources of neighboring cells based on the measurement results.

[0024] In this implementation, the terminal device can measure one or more reference signal resources of neighboring cells and select a target reference signal resource from them. This target reference signal resource corresponds to a target candidate beam, meaning the terminal device selects a candidate beam to initiate beam recovery from neighboring cells and request access to the target candidate beam.

[0025] In another possible implementation, the target reference signal resource is one of the reference signal resources in the measurement result whose signal quality is greater than or equal to a first threshold value.

[0026] In this implementation, the terminal device can select a reference signal resource with better signal quality as the target reference signal resource, thereby facilitating the terminal device to request access to the beam with better signal quality during the beam recovery process in the neighboring cell, so as to improve the communication quality of the terminal device in the neighboring cell.

[0027] In another possible implementation, the method further includes: the terminal device receiving first configuration information from the network device, the first configuration information being used to configure a first resource set for the terminal device.

[0028] In this implementation, the network device can configure a first resource set for the terminal device to facilitate the terminal device's selection of target reference signal resources. This makes it easier for the terminal device to request access to a beam with better signal quality during beam recovery in neighboring cells, thereby improving the terminal device's communication quality in neighboring cells.

[0029] In another possible implementation, the method further includes: the terminal device receiving second configuration information from the network device;

[0030] The second configuration information is used to configure the at least one PRACH resource, wherein each PRACH resource is associated with a reference signal resource of a neighboring cell, and different PRACH resources are associated with different reference signal resources of neighboring cells.

[0031] In this possible implementation, the network device can configure at least one PRACH resource for the terminal device. Each PRACH resource is associated with a reference signal resource of a neighboring cell, and different PRACH resources are associated with different reference signal resources of neighboring cells. This allows the terminal device, after selecting the appropriate target reference signal resource, to determine the associated PRACH resource and initiate beam recovery for the neighboring cell to the network device. This ensures alignment between the network device and the terminal device; the network device can determine the beam the terminal device is requesting access to by using the target PRACH resource corresponding to the target reference signal resource. This enables the terminal device to perform beam recovery for the neighboring cell.

[0032] In another possible implementation, the reference signal resources in the first resource set include synchronization signal blocks and physical broadcast channel blocks (SSBs) from neighboring cells and / or channel state information-reference signal (CSI-RS) resources. This implementation illustrates two possible resource types of reference signal resources included in the first resource set, which is beneficial for the implementation of the scheme.

[0033] A second aspect of this application provides a beam recovery method, comprising:

[0034] The network device determines at least one PRACH resource of the terminal device, wherein each PRACH resource is associated with a reference signal resource of a neighboring cell of the terminal device, and different PRACH resources are associated with different reference signal resources of neighboring cells; the network device provides the terminal device with second configuration information, which is used to configure the PRACH resources for the terminal device.

[0035] In the above technical solution, the network device can configure at least one PRACH resource for the terminal device. Each PRACH resource is associated with a reference signal resource of a neighboring cell, and different PRACH resources are associated with different reference signal resources of neighboring cells. This allows the terminal device, after selecting the appropriate target reference signal resource, to determine the associated PRACH resource and initiate beam recovery for the neighboring cell to the network device. This ensures alignment between the network device and the terminal device; the network device can determine the beam the terminal device is requesting access to by using the target PRACH resource corresponding to the target reference signal resource. This enables the terminal device to recover beams from neighboring cells.

[0036] In one possible implementation, the at least one PRACH resource includes: at least one CFRA resource of a neighboring cell dedicated to beam recovery;

[0037] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and each reference signal resource of a neighboring cell corresponds to a candidate beam of the neighboring cell.

[0038] This implementation illustrates one possible approach for the at least one PRACH resource of the terminal device. The network device can configure at least one CFRA resource dedicated to beam recovery for the terminal device's neighboring cells. This facilitates beam recovery of neighboring cells by the terminal device based on the CFRA resource, thereby enabling the terminal device to support beam recovery of neighboring cells and improving its communication performance.

[0039] In another possible implementation, the at least one PRACH resource includes: at least one CBRA resource of a neighboring cell;

[0040] Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0041] This implementation illustrates another possible implementation of the at least one PRACH resource of the terminal device. The network device can configure CBRA resources for the terminal device's neighboring cells. This facilitates beam recovery of neighboring cells by the terminal device based on the CBRA resources. This enables the terminal device to support beam recovery of neighboring cells, thereby improving the terminal device's communication performance. It enriches the implementation methods of the solution and improves the robustness of the terminal device in performing beam recovery of neighboring cells.

[0042] In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource of the serving cell of the terminal device dedicated to beam recovery;

[0043] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0044] This implementation illustrates another possible implementation of the at least one PRACH resource of the terminal device. The network device can configure CFRA resources for the serving cell of the terminal device. These CFRA resources can be associated with reference signal resources of neighboring cells, thereby facilitating beam recovery of neighboring cells by the terminal device based on these CFRA resources. This enables the terminal device to support beam recovery of neighboring cells, improving the communication performance of the terminal device. The CFRA resource is the CFRA resource of the serving cell, used to initiate random access to the serving cell. The CFRA resource is also associated with reference signal resources of neighboring cells, enabling the terminal device to support beam recovery of neighboring cells, improving the communication performance of the terminal device, and increasing the utilization rate of PRACH resources.

[0045] In another possible implementation, each CFRA resource is also associated with a reference signal resource of the serving cell, and different CFRA resources are associated with different reference signal resources of the serving cell. Each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

[0046] In this implementation, each CFRA resource of the serving cell is also associated with the serving cell's reference signal resources for beam recovery. This improves resource utilization.

[0047] Another possible implementation includes:

[0048] The network device sends first configuration information to the terminal device. The first configuration information is used to configure a first resource set for the terminal device. The first resource set includes one or more reference signal resources of neighboring cells, and each reference signal resource corresponds to a candidate beam of a neighboring cell.

[0049] In this implementation, the network device can configure a first resource set for the terminal device to facilitate the terminal device's selection of target reference signal resources. This makes it easier for the terminal device to request access to a beam with better signal quality during beam recovery in neighboring cells, thereby improving the terminal device's communication quality in neighboring cells.

[0050] In another possible implementation, the reference signal resources in the first resource set include SSB resources and / or CSI-RS resources of neighboring cells. This implementation illustrates two possible resource types of reference signal resources included in the first resource set, which is beneficial for the implementation of the scheme.

[0051] A third aspect of this application provides a beam failure detection method, comprising:

[0052] The terminal device determines a first resource set, which includes at least one first reference signal resource. The at least one first reference signal resource is used for beam failure detection of the terminal device's neighboring cells. If the reference signal resource corresponding to the terminal device's serving beam is the reference signal resource of the neighboring cell, the terminal device uses the first reference signal resource included in the first resource set to perform beam failure detection on the serving beam.

[0053] In the above technical solution, if the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the neighboring cell, or if the serving beam of the terminal device is the beam of the neighboring cell, or if the reference signal resource included in the quasi-co-location (QCL) information corresponding to the serving beam of the terminal device is the reference signal resource of the neighboring cell, then the terminal device uses some or all of the first reference signal resources included in the first resource set to perform beam failure detection on the serving beam. This enables the terminal device to perform beam failure detection on the serving beam of the neighboring cell when beam failure occurs, thereby improving the communication performance of the terminal device. In other words, the terminal device can complete beam failure detection on the neighboring cell without performing radio resource control (RRC) reconfiguration, thus improving the communication performance of the terminal device.

[0054] One possible implementation method also includes:

[0055] If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam. The second reference signal resource and the resource corresponding to the physical downlink control channel demodulation reference signal (PDCCH DMRS) carried on the serving beam have a QCL relationship.

[0056] In this implementation, if the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, or in other words, if the serving beam of the terminal device is the beam of the serving cell; or in other words, if the reference signal resource included in the QCL information corresponding to the serving beam is the reference signal resource of the serving cell, then the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam. This enables the terminal device to perform beam failure detection on the serving beam of the serving cell when beam failure occurs, thereby improving communication performance.

[0057] In another possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the terminal device; the method further includes:

[0058] If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, the terminal device uses the third reference signal resource included in the first resource set to perform beam failure detection on the serving beam.

[0059] In this possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the terminal device. If the reference signal resource corresponding to the serving beam of the terminal device is a reference signal resource of the serving cell, or if the serving beam of the terminal device is the beam of the serving cell; or if the reference signal resource included in the QCL information corresponding to the serving beam is a reference signal resource of the serving cell, then the terminal device uses some or all of the third reference signal resources included in the first resource set to perform beam failure detection on the serving beam. This enables the terminal device to perform beam failure detection on the serving beam of the serving cell when beam failure occurs, improving communication performance. In other words, if the network device configures at least one third reference signal resource for beam failure detection for the serving cell of the terminal device, the terminal device can preferentially use this at least one third reference signal resource for beam failure detection of the serving beam.

[0060] In another possible implementation, the first resource set includes a first subset and a second subset; the first subset is associated with the physical cell identifier (PCI) of neighboring cells and includes at least one first reference signal resource; the second subset is associated with the PCI of the serving cell and includes at least one third reference signal resource.

[0061] In this possible implementation, the first resource set may include two subsets, namely, reference signal resources for beam failure detection from neighboring cells and reference signal resources for beam failure detection from the serving cell. Furthermore, the two subsets are associated with the PCI of their respective cells, thereby facilitating the terminal device to select the corresponding reference signal resources from the first resource set for beam failure detection based on the cell to which the serving beam belongs.

[0062] In another possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell. In this possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell, which facilitates the terminal device in determining the reference signal resources that can be used for beam failure detection in neighboring cells.

[0063] In another possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell. In this possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell, which facilitates the terminal device in determining the reference signal resources that can be used for beam failure detection of the serving cell.

[0064] Another possible implementation includes:

[0065] The terminal device receives first configuration information from the network device, which is used to configure a first resource set.

[0066] In this possible implementation, the network device can configure a first resource set for the terminal device, thereby enabling the terminal device to perform beam failure detection on the serving beams of neighboring cells based on the first resource set. This improves the communication performance of the terminal device.

[0067] In another possible implementation, the at least one first reference signal resource includes the SSB resources of the neighboring cell and / or the CSI-RS resources of the neighboring cell. The at least one third reference signal resource includes the SSB resources of the serving cell and / or the CSI-RS resources of the serving cell. This implementation illustrates two possible resource types for the first and third reference signal resources, which is beneficial for the implementation of the scheme.

[0068] The fourth aspect of this application provides a beam failure detection method, including:

[0069] The network device determines a first resource set, which includes at least one first reference signal resource. The at least one first reference signal resource is used for beam failure detection of neighboring cells of the terminal device. The network device sends first configuration information to the terminal device, which is used to configure the first resource set for the terminal device.

[0070] In the above technical solution, the network device can configure a first resource set for the terminal device, thereby enabling the terminal device to perform beam failure detection on the serving beam of the neighboring cell based on the first resource set when beam failure occurs. The terminal device can complete beam failure detection of the neighboring cell without performing RRC reconfiguration, thus improving the communication performance of the terminal device.

[0071] In another possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the terminal device.

[0072] In this possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell by the terminal device. This facilitates beam failure detection of the serving beam by the terminal device using the third reference signal resource included in the first resource set when beam failure occurs in the serving beam of the serving cell, thereby improving communication performance.

[0073] In another possible implementation, the first resource set includes a first subset and a second subset; the first subset is associated with the PCI of the serving cell and includes at least one first reference signal resource; the second subset is associated with the PCI of the neighboring cells and includes at least one third reference signal resource.

[0074] In this possible implementation, the first resource set may include two subsets, namely, reference signal resources for beam failure detection from neighboring cells and reference signal resources for beam failure detection from the serving cell. Furthermore, the two subsets are associated with the PCI of their respective cells, thereby facilitating the terminal device to select the corresponding reference signal resources from the first resource set for beam failure detection based on the cell to which the serving beam belongs.

[0075] In another possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell. In this possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell, which facilitates the terminal device in determining the reference signal resources that can be used for beam failure detection in neighboring cells.

[0076] In another possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell. In this possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell, which facilitates the terminal device in determining the reference signal resources that can be used for beam failure detection of the serving cell.

[0077] In another possible implementation, the at least one first reference signal resource includes the SSB resources of the neighboring cell and / or the CSI-RS resources of the neighboring cell. The at least one third reference signal resource includes the SSB resources of the serving cell and / or the CSI-RS resources of the serving cell. This implementation illustrates two possible resource types for the first and third reference signal resources, which is beneficial for the implementation of the scheme.

[0078] The fifth aspect of this application provides a beam failure detection method, including:

[0079] The terminal device uses a second reference signal resource to perform beam failure detection on its serving beam. The second reference signal resource and the resource corresponding to the PDCCH DMRS carried on the serving beam have a QCL relationship. Therefore, the terminal device achieves beam failure detection of neighboring cells through the technical solution of this application. The terminal device can complete beam failure detection of neighboring cells without performing RRC reconfiguration, thus improving communication performance.

[0080] One possible implementation method also includes:

[0081] The terminal device determines a first resource set, which includes at least one third reference signal resource. The at least one third reference signal resource is used for beam failure detection of the serving cell of the terminal device.

[0082] The terminal device uses a second reference signal resource to perform beam failure detection on the serving beam of the terminal device, including: if the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the neighboring cell accessed by the terminal device, then the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam.

[0083] In this possible implementation, the network device configures a first resource set for the terminal device, and the first resource set includes at least one third reference signal resource. This third reference signal resource is used for beam failure detection of the serving cell of the terminal device. If the serving beam is a beam from a neighboring cell, the terminal device uses a second reference signal resource to perform beam failure detection on the serving beam. This enables the terminal device to perform beam failure detection of neighboring cells without RRC reconfiguration, thus improving communication performance.

[0084] In another possible implementation, the at least one third reference signal resource includes the serving cell's SSB resources and / or the serving cell's CSI-RS resources. This implementation illustrates two possible resource types for the third reference signal resource, which is beneficial for scheme implementation.

[0085] A sixth aspect of this application provides a communication device, comprising:

[0086] The processing module is configured to determine, from at least one PRACH resource, a target PRACH resource associated with a target reference signal resource, which is a reference signal resource corresponding to a target candidate beam of a neighboring cell of the communication device;

[0087] The transceiver module is used to initiate beam recovery of neighboring cells based on the target PRACH resource.

[0088] In one possible implementation, the at least one PRACH resource includes: at least one CFRA resource of a neighboring cell dedicated to beam recovery;

[0089] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and each reference signal resource of a neighboring cell corresponds to a candidate beam of the neighboring cell.

[0090] In another possible implementation, the at least one PRACH resource includes: at least one CBRA resource of a neighboring cell;

[0091] Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0092] In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource of the serving cell of the communication device dedicated to beam recovery;

[0093] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0094] In another possible implementation, each CFRA resource is also associated with a reference signal resource of the serving cell, different CFRA resources are associated with different reference signal resources of the serving cell, and each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

[0095] In another possible implementation, the processing module is also used for:

[0096] If the serving beam of the communication device fails, and the reference signal resource corresponding to the serving beam is the reference signal resource of a neighboring cell, then the action of determining the target PRACH resource associated with the target reference signal resource from the at least one PRACH resource is performed.

[0097] In another possible implementation, before the communication device determines the target PRACH resource associated with the target reference signal resource from the at least one PRACH resource, the processing module is further configured to:

[0098] The reference signal resources in the first resource set are measured to obtain the measurement results. The first resource set includes one or more reference signal resources of neighboring cells, and each reference signal resource corresponds to a candidate beam of a neighboring cell.

[0099] The target reference signal resource is determined from one or more reference signal resources in neighboring cells based on the measurement results.

[0100] In another possible implementation, the target reference signal resource is one of the reference signal resources in the measurement result whose signal quality is greater than or equal to a first threshold value.

[0101] In another possible implementation, the transceiver module is also used for:

[0102] Receive first configuration information from a network device, the first configuration information being used to configure a first resource set for the communication device.

[0103] In another possible implementation, the transceiver module is also used for:

[0104] Receive second configuration information from the network device;

[0105] The second configuration information is used to configure the at least one PRACH resource, wherein each PRACH resource is associated with a reference signal resource of a neighboring cell, and different PRACH resources are associated with different reference signal resources of neighboring cells.

[0106] In another possible implementation, the reference signal resources in the first resource set include SSB resources and / or CSI-RS resources of neighboring cells.

[0107] A seventh aspect of this application provides a communication device, comprising:

[0108] The processing module is used to determine at least one PRACH resource of the terminal device, wherein each PRACH resource is associated with a reference signal resource of a neighboring cell of the terminal device, and different PRACH resources are associated with different reference signal resources of the neighboring cells.

[0109] The transceiver module is used to send second configuration information to the terminal device, the second configuration information being used to configure the at least one PRACH resource for the terminal device.

[0110] In one possible implementation, the at least one PRACH resource includes: at least one CFRA resource of a neighboring cell dedicated to beam recovery;

[0111] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and each reference signal resource of a neighboring cell corresponds to a candidate beam of the neighboring cell.

[0112] In another possible implementation, the at least one PRACH resource includes: at least one CBRA resource of a neighboring cell;

[0113] Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0114] In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource of the serving cell of the terminal device dedicated to beam recovery;

[0115] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0116] In another possible implementation, each CFRA resource is also associated with a reference signal resource of the serving cell, different CFRA resources are associated with different reference signal resources of the serving cell, and each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

[0117] In another possible implementation, the transceiver module is also used for:

[0118] Send first configuration information to the terminal device. The first configuration information is used to configure a first resource set for the terminal device. The first resource set includes one or more reference signal resources of neighboring cells, and each reference signal resource corresponds to a candidate beam of a neighboring cell.

[0119] In another possible implementation, the reference signal resources in the first resource set include SSB resources and / or CSI-RS resources of neighboring cells.

[0120] The eighth aspect of this application provides a communication device, comprising:

[0121] The processing module is configured to determine a first resource set, the first resource set including at least one first reference signal resource, the at least one first reference signal resource being used for beam failure detection of neighboring cells of the communication device; if the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the neighboring cell, then the first reference signal resource included in the first resource set is used to perform beam failure detection on the serving beam.

[0122] In one possible implementation, the processing module is also used for:

[0123] If the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the serving cell, then the second reference signal resource is used to perform beam failure detection on the serving beam. The second reference signal resource and the resource corresponding to the PDCCH DMRS carried on the serving beam have a QCL relationship.

[0124] In another possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the communication device; the processing module is also used for:

[0125] If the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the serving cell, then the third reference signal resource included in the first resource set is used to perform beam failure detection on the serving beam.

[0126] In another possible implementation, the first resource set includes a first subset and a second subset; the first subset is associated with the PCI of neighboring cells and includes at least one first reference signal resource; the second subset is associated with the PCI of the serving cell and includes at least one third reference signal resource.

[0127] In another possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell.

[0128] In another possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell.

[0129] In another possible implementation, the communication device also includes a transceiver module;

[0130] The transceiver module is used to receive first configuration information from the network device. The first configuration information is used to configure the first resource set.

[0131] In another possible implementation, the at least one first reference signal resource includes the SSB resources of the neighboring cell and / or the CSI-RS resources of the neighboring cell.

[0132] The ninth aspect of this application provides a communication device, comprising:

[0133] The processing module is used to determine a first resource set, the first resource set including at least one first reference signal resource, the at least one first reference signal resource being used for beam failure detection of neighboring cells of the terminal device;

[0134] The transceiver module is used to send first configuration information to the terminal device, and the first configuration information is used to configure a first resource set for the terminal device.

[0135] In another possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the terminal device.

[0136] In another possible implementation, the first resource set includes a first subset and a second subset; the first subset is associated with the PCI of the serving cell and includes at least one first reference signal resource; the second subset is associated with the PCI of the neighboring cells and includes at least one third reference signal resource.

[0137] In another possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell.

[0138] In another possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell.

[0139] In another possible implementation, the at least one first reference signal resource includes the SSB resources of the neighboring cell and / or the CSI-RS resources of the neighboring cell.

[0140] The tenth aspect of this application provides a communication device, comprising:

[0141] The processing module is used to perform beam failure detection on the service beam of the communication device using the second reference signal resource. The second reference signal resource has a QCL relationship with the resource corresponding to the PDCCH DMRS carried on the service beam.

[0142] In one possible implementation, the processing module is also used for:

[0143] A first resource set is determined, the first resource set including at least one third reference signal resource, the at least one third reference signal resource being used for beam failure detection of the serving cell of the communication device;

[0144] The processing module is specifically used for:

[0145] If the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the neighboring cell accessed by the communication device, then the second reference signal resource is used to perform beam failure detection on the serving beam.

[0146] In another possible implementation, the at least one third reference signal resource includes the serving cell's SSB resources and / or the serving cell's CSI-RS resources.

[0147] The eleventh aspect of this application provides a communication device, comprising a processor and a memory. The memory stores computer programs or computer instructions, and the processor is used to call and execute the computer programs or computer instructions stored in the memory, causing the processor to implement any one of the implementation methods of the first to fifth aspects.

[0148] Optionally, the communication device may also include a transceiver, and the processor is used to control the transceiver to send and receive signals.

[0149] The twelfth aspect of this application provides a communication device including a processor. The processor is configured to invoke a stored computer program or computer instructions, causing the processor to implement any one of the implementations of the first to fifth aspects.

[0150] Optionally, the communication device may also include a transceiver, and the processor is used to control the transceiver to send and receive signals.

[0151] The thirteenth aspect of this application provides a communication device including a processor for executing any implementation of any one of the first to fifth aspects.

[0152] The fourteenth aspect of this application provides a computer program product including instructions, characterized in that, when run on a computer, it causes the computer to perform any of the implementations of any one of the first to fifth aspects.

[0153] The fifteenth aspect of this application provides a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform any of the implementations of any one of the first to fifth aspects.

[0154] The sixteenth aspect of this application provides a chip device including a processor for calling a computer program or computer instructions in memory to cause the processor to execute any of the implementations described in any of the first to fifth aspects.

[0155] Optionally, the processor is coupled to the memory via an interface.

[0156] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0157] As described in the above technical solution, the terminal device determines a target PRACH resource associated with a target reference signal resource from at least one PRACH resource. This target PRACH resource is the reference signal resource corresponding to the target candidate beam of the terminal device's neighboring cell. Then, the terminal device initiates beam recovery for the neighboring cell based on this target PRACH resource. Therefore, the terminal device can determine the target PRACH resource associated with the target reference signal resource from at least one PRACH resource and initiate beam recovery for the neighboring cell based on this target PRACH resource, thereby supporting beam recovery for the neighboring cell and improving communication performance. Attached Figure Description

[0158] Figure 1 This is a schematic diagram illustrating a scenario to which the beam recovery method and beam failure detection method of the present application are applicable;

[0159] Figure 2 This is a schematic diagram illustrating another scenario to which the beam recovery method and beam failure detection method of the present application are applicable;

[0160] Figure 3 This is a schematic diagram of a medium access control element (MAC CE) for activating the transmission configuration indicator state (TCI-state), which is applicable to the beam usage method of this application embodiment.

[0161] Figure 4 This is a schematic diagram of one embodiment of the beam recovery method of this application;

[0162] Figure 5 This is a schematic diagram of one embodiment of the beam failure detection method of this application;

[0163] Figure 6 This is a schematic diagram of another embodiment of the beam failure detection method of this application;

[0164] Figure 7 This is a schematic diagram of the communication device according to an embodiment of this application;

[0165] Figure 8 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0166] Figure 9 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0167] Figure 10 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0168] Figure 11 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0169] Figure 12 This is another structural schematic diagram of the communication device according to an embodiment of this application;

[0170] Figure 13 This is another structural schematic diagram of the communication device according to an embodiment of this application. Detailed Implementation

[0171] This application provides a beam recovery method, a beam failure detection method, and related apparatus for beam recovery and detection in neighboring cells of a terminal device. This enables the terminal device to support beam failure detection and recovery in neighboring cells, thereby improving communication performance.

[0172] In this application, "at least one" means one or more, and "more than one" means two or more. For example, at least one PRACH resource includes one PRACH resource or includes multiple PRACH resources. "And / or" describes the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone. Here, A and B can be singular or plural. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc. Here, a, b, and c can be single or multiple.

[0173] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0174] The technical solution of this application can be applied to various communication systems. For example, 5G systems, new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication system (UMTS), mobile communication systems after 5G networks (e.g., 6G mobile communication systems), vehicle-to-everything (V2X) communication systems, etc.

[0175] The communication system to which this application applies includes terminal equipment and network equipment, and communication between the terminal equipment and the network equipment can be transmitted via beam.

[0176] The terminal equipment and network equipment of this application are described below.

[0177] The terminal device can be a wireless terminal device capable of receiving network device scheduling and instruction information. The terminal device can be a device that provides voice and / or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem.

[0178] Terminal equipment, also known as user equipment (UE), mobile station (MS), or mobile terminal (MT), is a device that includes wireless communication capabilities (providing voice / data connectivity to users). Examples include handheld devices with wireless connectivity and in-vehicle devices. Currently, some examples of terminal equipment include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in vehicle-to-everything (V2X) communication, wireless terminals in self-driving cars, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in V2X communication can be in-vehicle equipment, vehicle-mounted equipment, in-vehicle modules, or vehicles themselves. In industrial control, wireless terminals can be cameras, robots, etc. In smart homes, wireless terminals can be televisions, air conditioners, robot vacuums, speakers, set-top boxes, etc.

[0179] A network device can be a device within a wireless network. For example, a network device can be a device deployed in a radio access network (RAN) that provides wireless communication capabilities to terminal devices. For instance, a network device can be a RAN node that connects terminal devices to a wireless network; it can also be called an access network device.

[0180] Network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home-evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP) in a wireless fidelity (WIFI) system, and can also be network equipment in a 5G mobile communication system. For example, next-generation Node B (gNB), transmission and reception point (TRP), or TP in an NR system; or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system; or, network equipment can also be network nodes constituting a gNB or transmission point. For example, BBU, or distributed unit (DU), etc.

[0181] In some deployments, a gNB may include a centralized unit (CU) and a distribution unit (DU). A gNB may also include an active antenna unit (AAU). The CU implements some of the gNB's functions, and the DU implements others. For example, the CU handles non-real-time protocols and services, implementing RRC and Packet Data Convergence Protocol (PDCP) layer functions. The DU handles physical layer protocols and real-time services, implementing radio link control (RLC), MAC, and physical (PHY) layer functions. The AAU implements some physical layer processing functions, radio frequency processing, and active antenna-related functions. Information from the RRC layer ultimately becomes information from the PHY layer, or is derived from PHY layer information. Therefore, in this architecture, higher-layer signaling (such as RRC layer signaling) can be considered to be sent by the DU, or by both the DU and AAU. It is understood that network devices can be devices that include one or more of the following: CU nodes, DU nodes, and AAU nodes. In addition, the CU can be classified as a network device in the RAN or as a network device in the core network (CN), and this application does not limit this.

[0182] The following describes two possible application scenarios to which this application applies.

[0183] Figure 1 This is a schematic diagram illustrating a scenario to which the beam recovery method and beam failure detection method of this application are applicable. Figure 1 As shown, the terminal device is camped on the cell of base station 1, meaning that the cell of base station 1 is the serving cell of the terminal device. The terminal device also accesses a neighboring cell, namely the cell of base station 2. Optionally, the terminal device communicates with the neighboring cell via uplink beams and / or via downlink beams.

[0184] exist Figure 1 In the illustrated scenario, the terminal device can utilize the technical solution of this application to detect and restore the beam of a neighboring cell when a beam failure occurs. For example, when the uplink beam of a neighboring cell fails, the terminal device can detect and restore the uplink beam of that neighboring cell using the technical solution of this application. Similarly, when the downlink beam of a neighboring cell fails, the terminal device can detect and restore the downlink beam of that neighboring cell using the technical solution of this application.

[0185] Figure 2 This is a schematic diagram illustrating another scenario to which the beam recovery method and beam failure detection method of the embodiments of this application are applicable. For example... Figure 2 As shown, the terminal device is camped in the cell of base station 1, meaning that the cell of base station 1 is the serving cell for the terminal device. The terminal device also accesses a neighboring cell, namely the cell of base station 2.

[0186] In one possible implementation, the terminal device can communicate with the serving cell via the uplink beam of the serving cell and with neighboring cells via the downlink beam of a neighboring cell. The terminal device can utilize the technical solution of this application to detect and recover the downlink beam of a neighboring cell when a beam failure occurs.

[0187] In another possible implementation, the terminal device can communicate with the serving cell via the downlink beam of the serving cell and with neighboring cells via the uplink beam of the neighboring cell. The terminal device can use the technical solution of this application to detect and recover the uplink beam failure of a neighboring cell when such failure occurs.

[0188] It should be noted that the above Figure 1 and Figure 2 The scenario shown is merely an example. In practical applications, the base station corresponding to the serving cell and the base station corresponding to the neighboring cell can be the same base station or different base stations; this application does not impose any restrictions on this.

[0189] To facilitate understanding of the technical solution of this application, some technical terms involved in this application will be introduced below.

[0190] 1. Beam: A beam is a communication resource. A beam can be wide, narrow, or other types of beams, and the technology used to form a beam can be beamforming technology or other techniques. Beamforming technology can specifically be digital beamforming technology, analog beamforming technology, and hybrid digital / analog beamforming technology. Different beams can be considered different resources.

[0191] In the NR protocol, a beam can be referred to as a spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, quasi-colocation (QCL) information, QCL hypothesis, or QCL indication, etc. The beam can be indicated by TCI-state parameters or spatial relation parameters. Therefore, in this application, beam can be replaced by spatial domain filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL hypothesis, QCL indication, TCI-state (including uplink TCI-state and downlink TCI-state), or spatial relation, etc. The above terms are also equivalent to each other. Beam can also be replaced with other beam-related terms, which are not limited herein.

[0192] The beam used to transmit signals can be called the transmission beam (Tx beam), spatial domain transmission filter, spatial transmission filter, spatial domain transmission parameter, spatial transmission parameter, spatial domain transmission setting, or spatial transmission setting. The downlink transmission beam can be indicated by TCI-state.

[0193] The beam used to receive signals can be called a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception setting, or a spatial reception setting. The uplink transmit beam can be indicated by any of the following: spatial relation, uplink TCI-state, or a sounding reference signal (SRS) resource (indicating the transmit beam using that SRS). Therefore, the uplink beam can also be replaced by an SRS resource.

[0194] The transmitting beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted through an antenna, while the receiving beam can refer to the distribution of signal strength in different directions in space of a wireless signal received from an antenna.

[0195] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beam. The beamforming technology can be beamforming technology or other technologies. Specifically, beamforming technology can be digital beamforming technology, analog beamforming technology, hybrid digital beamforming technology, or hybrid analog beamforming technology, etc.

[0196] Beams are generally associated with resources. For example, during beam measurement, network devices measure different beams using different resources. The terminal devices provide feedback on the measured resource quality, allowing the network devices to determine the quality of the corresponding beam. During data transmission, beam information is also indicated through its corresponding resources. For instance, network devices use the TCI field in downlink control information (DCI) to indicate the physical downlink shared channel (PDSCH) beam information of the terminal devices.

[0197] In one possible implementation, multiple beams with the same or similar communication characteristics are considered as a single beam. A beam may include one or more antenna ports for transmitting data channels, control channels, and probe signals, etc. The one or more antenna ports forming a beam can also be considered as a set of antenna ports.

[0198] 2. TCI-state

[0199] The TCI-state is used to indicate the downlink beam. Network devices can generate different beams pointing in different transmission directions. During downlink data transmission, when a network device uses a specific beam to send data to a terminal device, it needs to inform the terminal device of the information of the transmit beam it is using. This allows the terminal device to use the corresponding receive beam to receive the data sent by the network device. In 3GPP Release 15 (3GPP R15) or 3GPP R16, the network device indicates the relevant information of the transmit beam it is using to the terminal device through the TCI field in the DCI. Specifically, the TCI field is 3 bits in size and can represent 8 different field values ​​(code points). Each value of the TCI field corresponds to an index of the TCI-state, and a TCI-state index can uniquely identify a TCI-state. A TCI-state includes several parameters that determine the relevant information of the transmit beam. The TCI-state is configured by the network device for each terminal device. The structure of the TCI-state is shown below:

[0200]

[0201]

[0202] Each TCI-state includes its own index, tci-state Id, and two quasi-co-location information (QCL-Info) entries. Each QCL-Info entry includes a cell field and a bwp-Id, indicating which bandwidth part (BWP) of which cell the TCI-state applies to. Different cells or different BWPs within the same cell can be configured with different QCL-Info entries. The QCL-Info entry also includes a reference signal indicating which reference signal resource constitutes a quasi-co-location relationship. In 3GPP R15 or 3GPP R16 protocols, beams are generally replaced by other terms. For example, in data transmission and channel measurements, beams correspond to reference signal resources, with one beam corresponding to one reference signal resource. Therefore, indicating which reference signal resource constitutes a QCL relationship essentially means which beam constitutes a QCL relationship. QCL relationship refers to two reference signal resources (or two antenna ports, with a one-to-one correspondence between antenna ports and reference signal resources) having certain identical spatial parameters. Which spatial parameters are identical depends on the type of the QCL-Info, specifically another field of the QCL-Info, qcl-Type. qcl-Type can have four values: {typeA, typeB, typeC, typeD}. Taking typeD as an example, typeD indicates that the two reference signal resources have the same spatial reception parameter information, meaning the two beams have the same receiving beam. At most one of the two QCL-Info values ​​included in the TCI-state can be TypeD.

[0203] The following example illustrates how network devices based on the 3GPP R15 or 3GPP R16 protocols use TCI-state to indicate the receive beam information of the data transmission beam to a terminal device, including the configuration, activation, and indication of TCI-state.

[0204] TCI-state configuration: Network devices configure multiple TCI-states to terminal devices via RRC signaling. Each of these TCI-states includes a QCL-Info of type type D. Network devices can also configure TCI-states that do not include a QCL-Info of type type D; however, these TCI-states are not used for data transmission beam indication and will not be discussed further here.

[0205] TCI-state activation: After configuring multiple TCI-states on a network device, eight of them need to be activated via MAC-CE. These eight TCI-states correspond one-to-one with the eight values ​​of the TCI field in the DCI. That is, which eight TCI-states correspond to the eight values ​​of the TCI field in the DCI is determined by MAC CE.

[0206] Figure 3 A schematic diagram of a MAC CE for activating the TCI state, applicable to embodiments of this application. (See diagram below.) Figure 3 As shown, fields T0 to T(N-2)*8+07 correspond to the TCI-states configured in the first step, with indices from 0 to (N-2)*8+7 respectively. Each field is 1 bit in size and can have a value of 0 or 1. A value of 1 indicates that the TCI-state is activated, and a value of 0 indicates that the TCI-state is not activated. Theoretically, each MAC CE can have 8 activated fields with a value of 1, and the rest are all 0. The TCI-states corresponding to these 8 fields with a value of 1 are the 8 TCI-states corresponding to the 8 values ​​of the TCI field in the DCI. For example, the minimum value of the TCI field (000) corresponds to the TCI-state with the smallest activated index in the MAC CE, and so on, one-to-one. There are many types of MAC CEs. In addition to MAC CEs used for TCI-state activation, there are many other types of MAC CEs for various purposes. This application only relates to MAC CEs used for TCI-state or TCI-state combination activation. Therefore, unless otherwise specified, the MAC CEs mentioned in this application refer to this type of MAC CE.

[0207] TCI-state indication: Network devices indicate a specific TCI-state through the TCI field in the DCI. For example, if the TCI field value in the DCI sent by the network device to the terminal device is 000, it indicates that the data transmission beam uses the TCI-state corresponding to 000. The reference signal contained in the type D QCL-Info within this TCI-state is CSI-RS with index #1, indicating that the beam used for data transmission is the same as the receiving beam corresponding to CSI-RS with index #1. The receiving beam corresponding to CSI-RS with index #1 can be determined through beam measurement procedures and is known to the terminal device. Therefore, through the specific value of the TCI field, the terminal device can determine the receiving beam corresponding to the data transmission beam and thus use the corresponding receiving beam to receive data. It should be noted that the two description methods of TCI-state and TCI status in this article can be used interchangeably.

[0208] 3. Spatial relation (used to indicate the uplink beam)

[0209] In current communication protocols, the uplink transmission beam is indicated by a spatial relation, which functions similarly to TCI-state, informing the terminal device which transmission beam to use for uplink transmission.

[0210] Spatial relations also need to be configured via RRC first. The configuration structure is shown below:

[0211]

[0212] This includes spatial relation identifiers, cell identifiers, target reference signal resources, path loss measurement reference signals, and power control parameters. The target reference signal resource (which can be any of SRS, SSB, or CSI-RS) indicates the corresponding uplink beam. If the uplink transmission uses spatial relation #1, and this spatial relation #1 includes a target reference signal resource #2, it indicates that the transmit beam used for this uplink transmission is the transmit or receive beam of the target reference signal. For example, if the target reference signal resource is an uplink resource SRS, it means that the transmit beam used for the uplink transmission is the transmit beam of that SRS (which is known). Similarly, if the target reference signal resource is a downlink resource such as SSB or CSI-RS, it means that the transmit beam used for the uplink transmission is the receive beam of that SSB or the receive beam of that CSI-RS (which is known).

[0213] Network devices can configure multiple spatial relations for terminal devices. Then, one of these is activated via MAC CE for the corresponding data transmission. Uplink transmission includes the Physical Uplink Control Channel (PUCCH), SRS, and Physical Uplink Shared Channel (PUSCH), all requiring corresponding spatial relations. The spatial relation of PUCCH is indicated by MAC CE signaling. The spatial relation of SRS is also indicated by MAC CE signaling. During PUSCH transmission, a specific SRS is associated, and the spatial relation of that SRS is used for transmission.

[0214] 4. QCL: Co-location relationship is used to indicate that multiple resources share one or more identical or similar communication characteristics. For multiple resources with a co-location relationship, the same or similar communication configurations can be used. For example, if two antenna ports are co-located, the large-scale channel characteristics of one port transmitting one symbol can be inferred from the large-scale channel characteristics of the other port transmitting one symbol. Large-scale characteristics can include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receive parameters, terminal equipment receive beam number, transmit / receive channel correlation, receive angle of arrival, spatial correlation of receiver antennas, main angle of arrival (Angle-of-Arrival, AoA), average angle of arrival, AoA spread, etc. For example, a co-location indicator is used to indicate whether at least two sets of antenna ports are co-located, including: a co-location indicator indicating whether the channel state information reference signals transmitted by at least two sets of antenna ports originate from the same transmission point, or a co-location indicator indicating whether the channel state information reference signals transmitted by at least two sets of antenna ports originate from the same beamgroup. For example, a QCL relationship between two resources means that the beams corresponding to the two resources are the same beam. Having a QCL relationship between two resources can include the two resources having the same QCL TypeD.

[0215] 5. Service beam of terminal equipment: refers to the beam currently used by the terminal equipment.

[0216] 6. Serving cell of the terminal device: This refers to the cell where the terminal device resides. The terminal device can communicate and transmit with the serving cell through the beam of the serving cell.

[0217] 7. Neighboring Cells of Terminal Equipment: These are cells whose PCI differs from the serving cell of the terminal equipment. Terminal equipment can communicate with neighboring cells via their beams.

[0218] Currently, in the 3GPP R15 protocol, network devices can configure a beam failure detection resource set q0 for terminal devices within the serving cell. This set q0 includes periodic CSI-RS resources. The terminal device communicates with the network device through the beam of this serving cell. When a beam failure occurs in the serving cell, the terminal device can utilize the resources in the beam failure detection resource set q0 for beam failure detection. If the network device has not configured this beam failure detection resource set q0 for the terminal device, the terminal device can search for reference signal resources (e.g., periodic CSI-RS resources or SSB resources) in the TCI status information that have a QCL relationship with the resources corresponding to the PDCCH carried on the beam of the serving cell, as beam failure detection resources. Then, the terminal device uses these beam failure detection resources to perform beam failure detection for the serving cell.

[0219] Network devices can also configure dedicated PRACH resources for beam recovery in the serving cell of a terminal device. Each PRACH resource is associated with a candidate beam of the serving cell, and different PRACH resources are associated with different candidate beams of the serving cell. When the serving cell's beam fails, the terminal device can initiate beam recovery for the serving cell through this PRACH resource.

[0220] As mentioned above Figure 1 or Figure 2 In the scenario shown, the terminal device can communicate with the network device using both the serving cell's beam and the neighboring cell's beam. However, currently, it is not supported to configure the terminal device to use the neighboring cell's reference signal resources as beam failure detection reference signal resources, nor is it possible to configure the terminal device for PRACH resources used for beam recovery in the neighboring cell. This results in the terminal device being unable to perform beam failure detection and beam recovery when a beam failure occurs in a neighboring cell.

[0221] In view of this, this application provides a beam recovery scheme for neighboring cells, which can be found in detail below. Figure 4 The embodiments shown are described in detail below. This application also provides a beam failure detection scheme for neighboring cells; please refer to the following text for details. Figure 5 and Figure 6 The following is a description of the illustrated embodiments. In the following text, "network device" can refer to the network device corresponding to the serving cell of the terminal device or the network device corresponding to a neighboring cell. For example, the network device is the base station of the serving cell or the base station corresponding to a neighboring cell. In the following text, "terminal device sending a signal to the serving cell" means the terminal device sends a signal to the network device corresponding to the serving cell (e.g., the base station corresponding to the serving cell), and "terminal device sending a signal to a neighboring cell" means the terminal device sends a signal to the network device corresponding to the neighboring cell (e.g., the base station corresponding to the neighboring cell). "Terminal device receiving a signal from the serving cell" means the terminal device receives a signal sent by the network device corresponding to the serving cell. "Terminal device receiving a signal from a neighboring cell" means the terminal device receives a signal sent by the network device corresponding to the neighboring cell. In the following text, PRACH resources can also be abbreviated as random access resources.

[0222] The technical solution of this application is described below with reference to specific embodiments.

[0223] Figure 4 This is a schematic diagram of one embodiment of the beam recovery method according to this application. Please refer to... Figure 4 Beam recovery methods include:

[0224] 401. The terminal device determines the target PRACH resource associated with the target reference signal resource from at least one PRACH resource.

[0225] The target reference signal resource is the reference signal resource corresponding to the target candidate beam of the neighboring cell of the terminal device. The target candidate beam is used by the terminal device to initiate beam recovery. Optionally, the target reference signal resource includes CSI-RS resources or SSB resources.

[0226] Specifically, the terminal device determines the target reference signal resource. Then, the terminal device selects the target PRACH resource associated with the target reference signal resource from among the at least one PRACH resource. It should be noted that if the network device configures one PRACH resource for the terminal device, the terminal device can directly use that PRACH resource as the target PRACH resource. If the network device configures multiple PRACH resources for the terminal device, the terminal device determines the target reference signal resource and selects the target PRACH resource associated with that target reference signal resource from among the multiple PRACH resources.

[0227] The following section describes a specific implementation method for determining target reference signal resources by terminal equipment, using 401a to 401b as examples.

[0228] Optional, Figure 4 The illustrated embodiment also includes 401a to 401b, which can be executed before 401.

[0229] 401a. The terminal device measures the reference signal resources in the first resource set and obtains the measurement results.

[0230] The first resource set includes one or more reference signal resources from neighboring cells, with each reference signal resource corresponding to a candidate beam from a neighboring cell.

[0231] For example, network devices configure a set of candidate beam detection reference signals (CBD RS) for neighboring cells for terminal devices. This CBD RS set includes one or more reference signal resources, such as SSB resources or CSI-RS resources. The CBD RS set is associated with the PCI of the neighboring cell, and the terminal device measures the reference signal resources in the neighboring cell's CBD RS set to obtain measurement results. For example, these measurement results include the signal quality of the beam corresponding to each reference signal resource in the neighboring cell's CBD RS set, such as the beam's reference signal received power (RSRP) or reference signal received quality (RSRQ).

[0232] Optionally, the reference signal resources of neighboring cells include: the SSB resources of neighboring cells, and / or, the CSI-RS resources of neighboring cells.

[0233] 401b. The terminal device determines the target reference signal resource from one or more reference signal resources in neighboring cells based on the measurement results.

[0234] Optionally, the target reference signal resource is one of the reference signal resources in the measurement result whose signal quality is greater than or equal to the first threshold value.

[0235] It should be noted that, optionally, the first threshold value can be set according to factors such as channel conditions and the terminal device's desired network speed. For example, the first threshold value can be between -80 dBm (decibels per milliwatt) and -90 dBm.

[0236] For example, the measurement results include the signal quality of SSB0 resources, the signal quality of SSB1 resources, the signal quality of CSI-RS0 resources, and the signal quality of CSI-RS1 resources. The terminal device selects an SSB0 resource that is greater than or equal to a first threshold value from the measurement results as the target reference signal resource.

[0237] Optionally, the network device can configure the first resource set for the terminal device. Figure 4 The illustrated embodiment also includes 401c, which can be executed before 401a.

[0238] 401c. The network device sends first configuration information to the terminal device. The first configuration information is used to configure the first resource set for the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device.

[0239] Optionally, this first configuration information is carried in RRC signaling. For example, the network device configures the CBD RS set of neighboring cells for the terminal device via RRC signaling.

[0240] Each PRACH resource in the at least one PRACH resource is associated with a reference signal resource of a neighboring cell, and each reference signal resource of the neighboring cell corresponds to a candidate beam of the neighboring cell.

[0241] The following describes some possible implementations of at least one PRACH resource.

[0242] Implementation Method 1: The at least one PRACH resource includes at least one CFRA resource from a neighboring cell dedicated to beam recovery.

[0243] In this neighboring cell, each CFRA resource is associated with a reference signal resource of the neighboring cell in at least one CFRA resource, and different CFRA resources are associated with different reference signal resources of the neighboring cells. Each reference signal resource of the neighboring cell corresponds to a candidate beam of the neighboring cell.

[0244] The following describes implementation method 1 with reference to the example shown in Table 1. As shown in Table 1, each CFRA resource of a neighboring cell is associated with a reference signal resource of that neighboring cell. Each CFRA resource of a neighboring cell is associated with the PCI of that neighboring cell, which indicates that the CFRA resource is a random access resource of the neighboring cell. Here, PCI = Y represents the neighboring cell, that is, the PCI of the neighboring cell is Y.

[0245] Table 1

[0246] CFRA Resources Reference signal resources of neighboring communities CFRA0(PCI=Y) SSB0(PCI=Y) CFRA1(PCI=Y) SSB1(PCI=Y) CFRA2(PCI=Y) CSI-RS0(PCI=Y) CFRA3(PCI=Y) CSI-RS1 (PCI=Y)

[0247] For example, if the target reference signal resource is the SSB0 resource of a neighboring cell, the terminal device can determine the associated CFRA0 resource of the neighboring cell using Table 1 above. That is, the target PRACH resource is the CFRA0 resource of the neighboring cell. In other words, if the network device has configured CFRA resources for beam recovery for a neighboring cell, the terminal device will preferentially use those CFRA resources for beam recovery in the neighboring cell.

[0248] It should be noted that at least one dedicated CFRA resource for beam recovery from a neighboring cell and the dedicated CFRA resource for beam recovery from the serving cell of the terminal device can be configured in the same set or in different sets. If both are configured in the same set, each CFRA resource of the terminal device is associated with the PCI of the corresponding cell; or, each CFRA resource of a neighboring cell is associated with the PCI of the neighboring cell, while each CFRA resource of the serving cell is not associated with a PCI; or, each CFRA resource of the serving cell is associated with the PCI of the serving cell, while each CFRA resource of a neighboring cell is not associated with a PCI. If both are configured in different sets, each set is associated with the PCI of the corresponding cell; or, the set of neighboring cells is associated with the PCI of the neighboring cells, while the set of serving cells is not associated with a PCI; or, the set of serving cells is associated with the PCI of the serving cell, while the set of neighboring cells is not associated with a PCI.

[0249] Optionally, each CFRA resource in at least one CFRA resource of the neighboring cell is also associated with a reference signal resource of the serving cell, and different CFRA resources are associated with different reference signal resources of the serving cell. Each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

[0250] In this implementation, it is understood that the network device configures at least one CFRA resource dedicated to beam recovery for the neighboring cell of the terminal device, but does not configure a dedicated CFRA resource for beam recovery for the serving cell. Each CFRA resource in the at least one CFRA resource of the neighboring cell can be associated with the reference signal resource of the serving cell for beam recovery of the serving cell.

[0251] Implementation method 2: The at least one PRACH resource includes at least one CBRA resource of the neighboring cell.

[0252] In at least one CBRA resource of the neighboring cell, each CBRA resource is associated with a reference signal resource of the neighboring cell, and different CBRA resources are associated with different reference signal resources of the neighboring cells. The reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0253] The following describes implementation method 2 in conjunction with Table 2. As shown in Table 2, each CBRA resource of a neighboring cell is associated with a reference signal resource of that neighboring cell. Each CBRA resource of a neighboring cell is associated with the PCI of that neighboring cell, which indicates that the CBRA resource is a random access resource of the neighboring cell. Here, PCI = Y represents the neighboring cell, meaning the PCI of the neighboring cell is Y.

[0254] Table 2

[0255] CBRA Resources Reference signal resources of neighboring communities CBRA0(PCI=Y) SSB0(PCI=Y) CBRA1(PCI=Y) SSB1(PCI=Y) CBRA2(PCI=Y) CSI-RS0(PCI=Y) CBRA3(PCI=Y) CSI-RS1 (PCI=Y)

[0256] For example, if the target reference signal resource is the CSI-RS0 resource of a neighboring cell, the terminal device can determine the associated CBRA2 resource of the neighboring cell using Table 2 above. That is, the target PRACH resource is the CBRA2 resource of the neighboring cell. In other words, if the network device has not configured CBRA resources for beam recovery for the neighboring cell, the terminal device can perform beam recovery for the neighboring cell based on the CBRA resources configured by the network device for the neighboring cell.

[0257] It should be noted that at least one CBRA resource of a neighboring cell and at least one CBRA resource of the serving cell of the terminal device can be configured in the same set or in different sets. If both are configured in the same set, each CBRA resource of the terminal device is associated with the PCI of the corresponding cell; or, each CBRA resource of a neighboring cell is associated with the PCI of the neighboring cell, and the CBRA resource of the serving cell is not associated with the PCI; or, each CBRA resource of the serving cell is associated with the PCI of the serving cell, and each CBRA resource of a neighboring cell is not associated with the PCI. If both are configured in different sets, each set is associated with the PCI of the corresponding cell; or, the set of neighboring cells is associated with the PCI of the neighboring cells, and the set of serving cells is not associated with the PCI; or, the set of serving cells is associated with the PCI of the serving cell, and the set of neighboring cells is not associated with the PCI.

[0258] It should be noted that in implementation method 2 above, each CRBA resource in at least one CBRA resource of the neighboring cell is associated with a reference signal resource of the neighboring cell. Each reference signal resource is associated with a candidate beam of the neighboring cell. The at least one CBRA resource shown in implementation method 2 above is a CBRA resource of the neighboring cell that can be used for both beam recovery and random access of the neighboring cell. In practical applications, the neighboring cell also includes other CBRA resources used for random access of the neighboring cell, but not for beam recovery.

[0259] Implementation method 3: The at least one PRACH resource includes at least one CFRA resource dedicated to beam recovery of the serving cell of the terminal device.

[0260] In the serving cell, each CFRA resource in at least one CFRA resource is associated with a reference signal resource of a neighboring cell, and different CFRA resources are associated with different reference signal resources of neighboring cells. The reference signal of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0261] The following describes implementation method 3 with reference to Table 3. As shown in Table 3, each CFRA resource of the serving cell is associated with a reference signal resource of a neighboring cell. Each CFRA resource of the serving cell is associated with the PCI of the serving cell, which indicates that the CFRA resource is a random access resource of the serving cell. Where PCI = X represents the neighboring cell, that is, the PCI of the serving cell is X. PCI = Y represents the neighboring cell, that is, the PCI of the neighboring cell is Y.

[0262] Table 3

[0263] CFRA Resources Reference signal resources of neighboring communities CFRA0(PCI=X) SSB0(PCI=Y) CFRA1(PCI=X) SSB1(PCI=Y) CFRA2(PCI=X) CSI-RS0(PCI=Y) CFRA3(PCI=X) CSI-RS1 (PCI=Y)

[0264] For example, if the target reference signal resource is the CSI-RS1 resource of a neighboring cell, the terminal device can determine the CFRA3 resource of the serving cell associated with this CSI-RS1 resource using Table 3 above. That is, the target PRACH resource is the CFRA3 resource of the serving cell. In other words, if the network device has not configured CFRA resources for beam recovery for the neighboring cell, the terminal device can perform beam recovery for the neighboring cell based on the CFRA resource of the serving cell associated with the reference signal resource of the neighboring cell.

[0265] Based on the above implementation method 3, optionally, each CFRA resource of the serving cell is also associated with a reference signal resource of the serving cell, different CFRA resources are associated with different reference signal resources of the serving cell, and the reference signal resource of each serving cell corresponds to a candidate beam of the serving cell.

[0266] In this implementation, the network device configures at least one dedicated CFRA resource for beam recovery for the serving cell of the terminal device. However, no dedicated CFRA resource for beam recovery is configured for the serving cell. Each CFRA resource of the serving cell is associated with both a reference signal resource of a neighboring cell and a reference signal resource of the serving cell for beam recovery in the neighboring cell. For example, as shown in Table 4:

[0267] Table 4

[0268]

[0269] Network devices can configure two sets of candidate beam detection reference signals (CDB RS) for terminal devices: one set of CDB RS for the serving cell and one set of CDB RS for neighboring cells. The CDB RS set for the serving cell includes one or more reference signal resources of the serving cell. The CDB RS set for neighboring cells includes one or more reference signal resources of the neighboring cells.

[0270] Optionally, in implementation 3 above, the at least one CFRA resource can also replace at least one CBRA resource of the serving cell. Each CBRA resource is associated with a reference signal resource of a neighboring cell, and different reference signal resources are associated with a candidate beam of a neighboring cell.

[0271] Optionally, prior to step 401 above, if the serving beam of the terminal device experiences beam failure, and the reference signal resource corresponding to the serving beam is a reference signal resource of a neighboring cell, then the process described in step 401 is executed. That is, the terminal device can measure the reference signal resources in the CDB RS set of the neighboring cell to obtain measurement results, determine the target reference signal resource from the measurement results, and then select the target PRACH resource associated with the target reference signal resource from the PRACH resources.

[0272] The reference signal resources corresponding to the serving beam are the reference signal resources of the neighboring cell. Alternatively, it can be described as follows: the reference signal resources included in the QCL information corresponding to the serving beam are the reference signal resources of the neighboring cell; or, the serving beam of the terminal device is the beam of the neighboring cell. For a more detailed introduction to beams and QCL information, please refer to the aforementioned explanation of related terms.

[0273] It should be noted that if the serving beam of the terminal device fails, and the reference signal resource corresponding to the serving beam is the reference signal resource of the serving cell, the terminal device measures the reference signal resources in the CDR RS set of the serving cell and selects a reference signal resource that is greater than a first threshold value. Based on Table 4 above, the terminal device determines the CFRA resource corresponding to the reference signal resource greater than the first threshold value and initiates beam recovery of the serving cell based on the CFRA resource. The statement that the reference signal resource corresponding to the serving beam is the reference signal resource of the serving cell can also be described as: the reference signal resource included in the QCL information corresponding to the serving beam is the reference signal resource of the serving cell; or, the serving beam is the beam of the serving cell.

[0274] As described above regarding at least one PRACH resource of the terminal device, there are multiple configuration methods for this resource. The terminal device can initiate beam recovery of neighboring cells based on different PRACH resource configuration methods, thereby improving the robustness of the terminal device in performing beam recovery of neighboring cells.

[0275] It should be noted that if at least one CFRA resource dedicated to beam recovery in the serving cell is associated only with the reference signal resources of the serving cell and not with the reference signal resources of neighboring cells, then the terminal device can only initiate beam recovery of the serving cell based on the CFRA resources of the serving cell and cannot initiate beam recovery of neighboring cells.

[0276] It should be noted that if the network device does not configure dedicated CFRA resources for beam recovery for the serving cell, but configures other PRACH resources for the serving cell, such as CBRA resources, then the terminal device can initiate beam recovery for the serving cell based on the other PRACH resources of that serving cell, but cannot initiate beam recovery for neighboring cells.

[0277] Optional, Figure 4 The illustrated embodiment also includes 401d, which can be executed before 401.

[0278] 401d. The network device sends second configuration information to the terminal device. The second configuration information is used to configure PRACH resources for the terminal device.

[0279] For example, network devices can send this second configuration information to terminal devices via RRC signaling.

[0280] It should be noted that there is no fixed execution order between 401c and 401d. 401c can be executed first and then 401d; or 401d can be executed first and then 401c; or 401c and 401d can be executed simultaneously depending on the situation. This application does not impose any specific restrictions.

[0281] It should be noted that the aforementioned 401c and 401d are implementations where the network device configures PRACH resources and the first resource set for the terminal device using two different configuration information. In practical applications, the network device can also configure PRACH resources and the first resource set for the terminal device using the same configuration information; this application does not impose any specific limitations on this.

[0282] 402. The terminal device initiates beam recovery of neighboring cells based on the target PRACH resource.

[0283] Specifically, the terminal device can send pilot signals to neighboring cells through the target PRACH resource to request access to the beam corresponding to the reference signal resource associated with the PRACH resource.

[0284] In this embodiment, the terminal device determines a target PRACH resource associated with a target reference signal resource from the at least one PRACH resource. This target PRACH resource is the reference signal resource corresponding to the target candidate beam of the terminal device's neighboring cell. Then, the terminal device initiates beam recovery for the neighboring cell based on this target PRACH resource. Therefore, the terminal device can determine the target PRACH resource associated with the target reference signal resource from at least one PRACH resource and initiate beam recovery for the neighboring cell based on this target PRACH resource. This enables the terminal device to initiate beam recovery for the neighboring cell, supporting beam recovery for the neighboring cell and improving communication performance.

[0285] It should be noted that, in Figure 4 In the illustrated embodiment, prior to beam failure in a neighboring cell, the terminal device can first perform beam failure detection for the neighboring cell. When the beam failure detection determines that the neighboring cell's beam is unavailable (e.g., the beam's signal quality is poor), the terminal device can execute the above... Figure 4 The embodiment shown illustrates a scheme for enabling a terminal device to initiate beam recovery in a neighboring cell. The terminal device can be accessed via the following... Figure 5 or Figure 6 The embodiment shown implements beam failure detection for neighboring cells; please refer to the following text for details. Figure 5 or Figure 6 The relevant descriptions of the embodiments shown will not be repeated here.

[0286] Optionally, the relationship between the terminal device and the serving cell and neighboring cells can be implemented in the following three possible ways.

[0287] Implementation Method 1: The terminal device communicates with the serving cell via the uplink beam of the serving cell and with neighboring cells via the downlink beam of the neighboring cells.

[0288] In this implementation, the serving beam of the terminal device is the downlink beam of the neighboring cell. If the downlink beam of the neighboring cell fails, the terminal device can resolve the issue through the aforementioned... Figure 4 The process of the illustrated embodiment initiates beam recovery to the neighboring cell. That is, the terminal device requests the downlink beam corresponding to the reference signal resource of the neighboring cell associated with the target PRACH resource from the neighboring cell.

[0289] It should be noted that, based on the above implementation method 1, the terminal device can also initiate beam recovery of neighboring cells in the following way: After the terminal device determines the target reference signal resource, the terminal device can send the identifier of the target reference signal resource to the serving cell through the uplink beam of the serving cell, and then the serving cell can send the identifier of the target reference signal resource to the neighboring cell to realize the beam recovery of the neighboring cell by the terminal device.

[0290] Implementation Method 2: The terminal device communicates downlink with the serving cell through the downlink beam of the serving cell and communicates uplink with the neighboring cell through the uplink beam of the neighboring cell.

[0291] In this implementation, the serving beam of the terminal device is the uplink beam of the neighboring cell. If the uplink beam of the neighboring cell fails, the terminal device can resolve the issue through the aforementioned... Figure 4The illustrated embodiment involves initiating beam recovery from a neighboring cell. This means the terminal device requests the uplink beam corresponding to the reference signal resource of the neighboring cell associated with the target PRACH resource.

[0292] In this implementation method 2, if the downlink beam of the serving cell fails, the terminal device can measure the CDB RS set of the serving cell and determine a reference signal resource greater than or equal to a first threshold value. Then, the terminal device can send the identifier of the reference signal resource greater than or equal to the first threshold value to the neighboring cell via the uplink beam of the neighboring cell. The neighboring cell then sends the identifier of the reference signal resource greater than or equal to the first threshold value to the serving cell, thereby enabling the terminal device to initiate beam recovery of the serving cell.

[0293] Implementation method 3: The terminal device communicates with the neighboring cell via the uplink beam and with the neighboring cell via the downlink beam.

[0294] In this implementation, the serving beam of the terminal device is either the uplink beam or the downlink beam of the neighboring cell. For example, if the uplink beam of the neighboring cell fails, the terminal device can resolve the issue through the aforementioned... Figure 4 The illustrated embodiment involves initiating beam recovery from a neighboring cell. Specifically, the terminal device requests the uplink beam corresponding to the reference signal resource of the neighboring cell associated with the target PRACH resource. For example, if the downlink beam of the neighboring cell fails, the terminal device can recover the beam using the method described above. Figure 4 The process of the illustrated embodiment initiates beam recovery to the neighboring cell. That is, the terminal device requests the downlink beam corresponding to the reference signal resource of the neighboring cell associated with the target PRACH resource from the neighboring cell.

[0295] The following is combined with Figure 5 and Figure 6 The embodiments shown illustrate two possible schemes for a terminal device to perform beam failure detection of neighboring cells.

[0296] Figure 5 This is a schematic diagram of one embodiment of the beam failure detection method according to this application. Please refer to... Figure 5 Beam failure detection methods include:

[0297] 501. The terminal device determines the first resource set.

[0298] The first resource set includes at least one first reference signal resource, which is used for beam failure detection of neighboring cells of the terminal device. This first resource set may also be referred to as a first beam failure detection reference signal (BFD RS) set; however, this application does not specifically limit the name of this set. The first reference signal resource may also be referred to as the BFD RS resource of the neighboring cell.

[0299] The at least one first reference signal resource includes the SSB resources and / or CSI-RS resources of the neighboring cell.

[0300] The following describes two possible implementations of the first resource set.

[0301] Implementation method 1: The first resource set includes at least one first reference signal resource.

[0302] The following section, in conjunction with Table 5, describes one possible implementation of this first resource set. Here, PCI = Y represents the neighboring cell. That is, the PCI of the neighboring cell is equal to Y.

[0303] Table 5

[0304]

[0305] The BFD RS set of a neighboring cell is associated with the PCI of that neighboring cell. This BFD RS set includes the BFD RS resources of the neighboring cell. For example, the BFD RS resources of a neighboring cell may include its SSB resources or CSI-RS resources. Each BFDRS resource corresponds to a candidate beam of the neighboring cell. For an explanation of the relationship between beams and resources, please refer to the aforementioned introduction to related terminology.

[0306] Implementation method 2: The first resource set includes at least one first reference signal resource and at least one third reference signal resource. The at least one third reference signal resource is used for beam failure detection of the serving cell of the terminal equipment.

[0307] In this implementation, the first resource set includes both the BFD RS resources of neighboring cells and the BFD RS resources of the serving cell. The following describes two possible forms of the first resource set under this implementation.

[0308] 1. The first resource set includes at least one first reference signal resource and at least one third reference signal resource. Each first reference signal resource is associated with the PCI of the neighboring cell; and / or, each third reference signal resource is associated with the PCI of the serving cell.

[0309] For example, the first resource set is BFD RS set 0 as shown in Table 6, where PCI=X represents the serving cell and PCI=Y represents the neighboring cell. Each BFD RS resource in BFD RS set 0 is associated with the PCI of the corresponding cell.

[0310] Table 6

[0311]

[0312] For example, the first resource set is BFD RS set 0 as shown in Table 7, where PCI = X represents the serving cell. Each reference signal resource of the serving cell in BFD RS set 0 is associated with the PCI of the serving cell. The reference signal resources of neighboring cells do not need to be explicitly configured with corresponding PCIs; the reference signal resources in Table 7 that do not carry corresponding PCIs are the reference signal resources of neighboring cells.

[0313] Table 7

[0314]

[0315] For example, the first resource set is BFD RS set 0 as shown in Table 8, where PCI = Y represents a neighboring cell. Each reference signal resource of a neighboring cell in BFD RS set 0 is associated with the neighboring cell's PCI. The reference signal resources of the serving cell do not need to be explicitly configured with corresponding PCIs; the reference signal resources in Table 8 that do not carry corresponding PCIs are the reference signal resources of the serving cell.

[0316] Table 8

[0317]

[0318] 2. The first resource set includes a first subset and a second subset. The first subset includes the at least first reference signal resource, and the second subset includes the at least one third reference signal resource.

[0319] Optionally, the first subset is associated with the PCI of neighboring cells, and / or the second subset is associated with the PCI of the serving cell.

[0320] For example, as shown in Table 9, the first subset is BFD RS set 1, and the second subset is BFD RS set 2. PCI=X represents the serving cell, and PCI=Y represents the neighboring cell.

[0321] Table 9

[0322]

[0323] It should be noted that the first resource set includes at least one first reference signal resource. The network device may also configure a second resource set, which includes at least one third reference signal resource. That is, the BFD RS resources of the neighboring cell and the BFD RS resources of the serving cell are configured in different sets. Optionally, the first resource set is associated with the PCI of the neighboring cell; and / or, the second resource set is associated with the PCI of the serving cell. The technical solution of this application will be described below using implementation methods 1 and 2 as examples.

[0324] Optional, Figure 5 The illustrated embodiment also includes 501a, which can be executed before 501.

[0325] 501a. The network device sends first configuration information to the terminal device. The first configuration information is used to configure a first resource set. Correspondingly, the terminal device receives the first configuration information from the network device.

[0326] For example, the network device sends the first configuration information to the terminal device via RRC signaling to configure the first resource set for the terminal device.

[0327] 502. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the neighboring cell, the terminal device uses the first reference signal resource included in the first resource set to perform beam failure detection on the serving beam.

[0328] For example, if the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of a neighboring cell, the terminal device can use some or all of the first reference signal resources in the first resource set to perform beam failure detection on the serving beam. Specifically, the terminal device can receive reference signals from the neighboring cell on some or all of the first reference signal resources and measure the signal quality of the reference signals. If, after multiple measurements, it is determined that the signal quality of the reference signal is less than a preset threshold, the terminal device can determine that the serving beam is no longer available, and the terminal device can initiate beam recovery to the neighboring cell to request access to a new beam. If, after multiple measurements, it is determined that the signal quality of the reference signal is greater than the preset threshold, the terminal device can determine that the serving beam is available, and then continue to use the serving beam to communicate with the neighboring cell.

[0329] The above 502 can also be described as follows: if the reference signal resources included in the QCL information corresponding to the serving beam of the terminal device are reference signal resources of the neighboring cell, then the terminal device uses the first reference signal resources included in the first resource set to perform beam failure detection on the serving beam of the terminal device; or, if the serving beam of the terminal device is the beam of the neighboring cell, then the terminal device uses the first reference signal resources included in the first resource set to perform beam failure detection on the serving beam of the terminal device.

[0330] Therefore, in step 502 above, the terminal device determines that the reference signal resources included in the QCL information corresponding to the serving beam come from a neighboring cell. The terminal device determines the BFD RS resources corresponding to the neighboring cell and performs beam failure detection based on the BFD RS resources of the neighboring cell.

[0331] Based on the above-mentioned implementation method 1 of the first resource set, optionally, Figure 5 The illustrated embodiment also includes 503. 503 can be executed after 501.

[0332] 503. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam.

[0333] The second reference signal resource has a QCL relationship with the resource corresponding to the PDCCH DMRS carried on the serving beam of the terminal device. It can be understood that the beam corresponding to the second reference signal resource is the same as or similar to the beam corresponding to the resource corresponding to the PDCCH DMRS carried on the serving beam.

[0334] The first resource set includes only at least one first reference signal resource from a neighboring cell. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam of the terminal device. For example, the terminal device receives a reference signal sent by the serving cell on the second reference signal resource and measures the signal quality of the reference signal. If, after multiple measurements, it is determined that the signal quality of the reference signal is less than a preset threshold, the terminal device can determine that the serving beam is no longer available, and the terminal device can initiate beam recovery to the serving cell to request access to a new beam. If, after multiple measurements, it is determined that the signal quality of the reference signal is greater than the preset threshold, the terminal device can determine that the serving beam is available, and continues to use the serving beam to communicate with the serving cell.

[0335] The above 503 can also be described as follows: if the serving beam of the terminal device is the beam of the serving cell, then the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam of the terminal device; or, if the reference signal resource included in the QCL information corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, then the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam of the terminal device.

[0336] Based on the above-mentioned implementation method 2 of the first resource set, optionally, Figure 5 The illustrated embodiment also includes 504. 504 can be executed after 501.

[0337] 504. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, the terminal device uses the third reference signal resource included in the first resource set to perform beam failure detection on the serving beam.

[0338] The first resource set includes at least one first reference signal resource and at least one third reference signal resource. The terminal equipment uses some or all of the third reference signal resources in the first resource set to perform beam failure detection on the serving beam.

[0339] For example, the terminal device receives a reference signal transmitted by the serving cell on some or all of the third reference signal resources in the first resource set, and measures the signal quality of the reference signal. If, after multiple measurements, the signal quality of the reference signal is determined to be less than a preset threshold, the terminal device can determine that the serving beam is no longer available, and the terminal device can initiate beam recovery to the serving cell to request access to a new beam. If, after multiple measurements, the signal quality of the reference signal is determined to be greater than the preset threshold, the terminal device can determine that the serving beam is available, and continues to use the serving beam to communicate with the serving cell. That is, in step 504 above, if the network device configures at least one third reference signal resource for serving cell beam failure detection for the terminal device, the terminal device preferentially uses the at least one third reference signal resource for serving cell beam failure detection.

[0340] The above 504 can also be described as follows: if the reference signal resources included in the QCL information corresponding to the serving beam of the terminal device are the reference signal resources of the serving cell, then the terminal device uses the third reference signal resources included in the first resource set to perform beam failure detection on the serving beam; or, if the serving beam of the terminal device is the beam of the serving cell, then the terminal device uses the third reference signal resources included in the first resource set to perform beam failure detection on the serving beam.

[0341] Therefore, in step 504 above, the terminal device determines that the reference signal resources included in the QCL information corresponding to the serving beam originate from the serving cell. The terminal device determines the BFD RS resources of the serving cell and performs beam failure detection on the serving beam based on the BFD RS resources of the serving cell.

[0342] Optionally, the relationship between the terminal device and the serving cell and neighboring cells can be implemented in the following three possible ways.

[0343] Implementation Method 1: The terminal device communicates with the serving cell via the uplink beam of the serving cell and with neighboring cells via the downlink beam of the neighboring cells.

[0344] For example, the serving beam of this terminal device is the downlink beam of the neighboring cell. If the downlink beam of the neighboring cell fails, the terminal device can use the above... Figure 5 The process of the illustrated embodiment performs beam failure detection on the downlink beam of the neighboring cell.

[0345] Implementation Method 2: The terminal device communicates downlink with the serving cell through the downlink beam of the serving cell and communicates uplink with the neighboring cell through the uplink beam of the neighboring cell.

[0346] For example, the serving beam of the terminal device is the downlink beam of the serving cell. If the downlink beam of the serving cell fails, the terminal device can use the above... Figure 5 The process of the illustrated embodiment performs beam failure detection on the downlink beam of the serving cell.

[0347] Implementation method 3: The terminal device communicates with the neighboring cell via the uplink beam and with the neighboring cell via the downlink beam.

[0348] For example, the serving beam of this terminal device is the downlink beam of the neighboring cell. If the downlink beam of the neighboring cell fails, the terminal device can use the above... Figure 5 The process of the illustrated embodiment performs beam failure detection on the downlink beam of the neighboring cell.

[0349] In this embodiment, the terminal device determines a first resource set. The first resource set includes at least one first reference signal resource, which is used for beam failure detection of neighboring cells by the terminal device. If the reference signal resource corresponding to the serving beam of the terminal device is a reference signal resource of a neighboring cell, the terminal device uses the first reference signal resource included in the first resource set to perform beam failure detection on the serving beam. Therefore, the terminal device achieves beam failure detection of neighboring cells through the technical solution of this application. The terminal device can complete beam failure detection of neighboring cells without performing RRC reconfiguration, thus improving communication performance.

[0350] Figure 6 This is a schematic diagram of another embodiment of the beam failure detection method of this application. Please refer to... Figure 6 Beam failure detection methods include:

[0351] 601. The terminal equipment uses the second reference signal resource to perform beam failure detection on the service beam of the terminal equipment.

[0352] The second reference signal resource has a QCL relationship with the resource corresponding to the PDCCH DMRS carried on the serving beam of the terminal device. It can be understood that the beam corresponding to the second reference signal resource is the same as or similar to the beam corresponding to the resource corresponding to the PDCCH DMRS carried on the serving beam. The second reference signal resource is a CSI-RS resource or an SSB resource.

[0353] In one possible implementation, the network device does not configure reference signal resources for beam failure detection for the serving cell and neighboring cells of the terminal device. Regardless of whether the serving beam is the serving cell's beam or the neighboring cell's beam, if the serving beam fails, the terminal device uses a second reference signal resource to perform beam failure detection on the terminal device's serving beam.

[0354] In another possible implementation, the network device configures a first resource set for the terminal device, the first resource set being used for beam failure detection of the serving cell. The first resource set includes at least one third reference signal resource.

[0355] Based on this implementation method, optional, Figure 6 The illustrated embodiment also includes 601a, which can be executed before 601.

[0356] 601a. ​​The network device sends second configuration information to the terminal device. The second configuration information is used to configure the first resource set. Correspondingly, the terminal device receives the second configuration information from the network device.

[0357] For example, network devices send this second configuration information to terminal devices via RRC signaling.

[0358] The first resource set includes the at least one third reference signal resource set used for beam failure detection of the serving cell. For example, as shown in Table 10, the first resource set is BFD RS set 0, which is associated with the PCI of the serving cell. PCI = X represents the serving cell. BFD RS set 0 includes the BFD RS resources of the serving cell.

[0359] Table 10

[0360]

[0361] Based on 601a, the aforementioned 601 specifically includes: if the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the neighboring cell, then the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam of the terminal device.

[0362] In other words, if the serving beam is a beam from a neighboring cell, the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam. Alternatively, if the reference signal resource included in the QCL information corresponding to the serving beam is a reference signal resource from a neighboring cell, the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam.

[0363] Based on the above 601a, optionally, Figure 6 The illustrated embodiment also includes 602, which can be executed after 601.

[0364] 602. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, the terminal device uses the first resource set to perform beam failure detection on the serving beam.

[0365] The above 602 can be alternatively described as follows: if the serving beam of the terminal device is the serving cell's beam, then the terminal device uses the first resource set to perform beam failure detection on the serving beam; or, if the reference signal resources included in the QCL information corresponding to the serving beam of the terminal device are the reference signal resources of the serving cell, then the terminal device uses the first resource set to perform beam failure detection on the serving beam. In other words, in the above 602, if the network device configures at least one third reference signal resource for serving cell beam failure detection for the terminal device, then the terminal device preferentially uses this at least one third reference signal resource for serving cell beam failure detection.

[0366] Optionally, the relationship between the terminal device and the serving cell and neighboring cells is described above. Figure 5The relevant descriptions in the illustrated embodiments will not be explained in detail here.

[0367] In this embodiment, the terminal device uses a second reference signal resource to perform beam failure detection on its serving beam. The second reference signal resource has a QCL relationship with the resource corresponding to the PDCCH DMRS carried on the serving beam of the terminal device. Therefore, the terminal device achieves beam failure detection of neighboring cells through the technical solution of this application. The terminal device can complete beam failure detection of neighboring cells without performing RRC reconfiguration, thus improving communication performance.

[0368] The above Figure 5 and Figure 6 The illustrated embodiments demonstrate various possible implementation schemes for the network device to configure beam failure detection resources for the terminal device. The terminal device performs beam failure detection of neighboring cells based on the beam failure detection resources configured by the network device. This enables the terminal device to complete beam failure detection of neighboring cells without performing RRC reconfiguration, thereby improving communication performance.

[0369] The communication device provided in the embodiments of this application is described below.

[0370] Figure 7 This is a schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 7 The communication device 700 can be used to perform the above. Figure 4 For details regarding the process executed by the terminal device in the illustrated embodiment, please refer to the above. Figure 4 The relevant descriptions in the illustrated embodiments are as follows.

[0371] The communication device 700 includes a processing module 701 and a transceiver module 702. The processing module 701 is used for data or signal processing. The transceiver module 702 is used to implement corresponding communication functions; the transceiver module 702 can also be referred to as a communication interface or a communication module.

[0372] Optionally, the communication device 700 may further include a storage module for storing instructions and / or data, and the processing module 701 may read the instructions and / or data from the storage module to enable the communication device to perform the aforementioned functions. Figure 4 The example shown.

[0373] The communication device 700 can be used to perform the above. Figure 4 The actions performed by the terminal device in the illustrated embodiment. The communication device 700 can be a terminal device or a component configurable on a terminal device. The processing module 701 is used to execute the above... Figure 4 The embodiments shown depict processing-related operations on the terminal device side. Optionally, the transceiver module 702 is used to perform the above-described operations. Figure 4 The embodiment shown illustrates the receiving-related operations on the terminal device side.

[0374] Optionally, the transceiver module 702 may include a sending module and a receiving module. The sending module is used to perform the above-described... Figure 4 The transmitting operation in the illustrated embodiment. The receiving module is used to perform the above. Figure 4 The receiving operation in the illustrated embodiment.

[0375] It should be noted that the communication device 700 may include a transmitting module but not a receiving module. Alternatively, the communication device 700 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 700 includes both transmitting and receiving actions.

[0376] The communication device 700 can be used in the following scenarios:

[0377] Processing module 701 is configured to determine, from at least one PRACH resource, a target PRACH resource associated with a target reference signal resource, which is a reference signal resource corresponding to a target candidate beam of a neighboring cell of communication device 700;

[0378] The transceiver module 702 is used to initiate beam recovery of neighboring cells based on the target PRACH resource.

[0379] In one possible implementation, the at least one PRACH resource includes: at least one CFRA resource of a neighboring cell dedicated to beam recovery;

[0380] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and each reference signal resource of a neighboring cell corresponds to a candidate beam of the neighboring cell.

[0381] In another possible implementation, the at least one PRACH resource includes: at least one CBRA resource of a neighboring cell;

[0382] Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0383] In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource of the serving cell of the communication device 700 dedicated to beam recovery;

[0384] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0385] In another possible implementation, each CFRA resource is also associated with a reference signal resource of the serving cell, different CFRA resources are associated with different reference signal resources of the serving cell, and each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

[0386] In another possible implementation, the processing module 701 is also used for:

[0387] If the serving beam of the communication device 700 fails, and the reference signal resource corresponding to the serving beam is the reference signal resource of a neighboring cell, then the action of determining the target PRACH resource associated with the target reference signal resource from the at least one PRACH resource is performed.

[0388] In another possible implementation, before the communication device 700 determines the target PRACH resource associated with the target reference signal resource from the at least one PRACH resource, the processing module 701 is further configured to:

[0389] The reference signal resources in the first resource set are measured to obtain the measurement results. The first resource set includes one or more reference signal resources of neighboring cells, and each reference signal resource corresponds to a candidate beam of a neighboring cell.

[0390] The target reference signal resource is determined from one or more reference signal resources in neighboring cells based on the measurement results.

[0391] In another possible implementation, the target reference signal resource is one of the reference signal resources in the measurement result whose signal quality is greater than or equal to a first threshold value.

[0392] In another possible implementation, the transceiver module 702 is also used for:

[0393] The first configuration information is received from the network device, which is used to configure a first resource set for the communication device 700.

[0394] In another possible implementation, the transceiver module 702 is also used for:

[0395] Receive second configuration information from the network device;

[0396] The second configuration information is used to configure the at least one PRACH resource, wherein each PRACH resource is associated with a reference signal resource of a neighboring cell, and different PRACH resources are associated with different reference signal resources of neighboring cells.

[0397] In another possible implementation, the reference signal resources in the first resource set include SSB resources and / or CSI-RS resources of neighboring cells.

[0398] It should be understood that the specific procedures for each module to execute the above-mentioned corresponding processes are described above. Figure 4 The embodiments shown have been described in detail, and for the sake of brevity, they will not be repeated here.

[0399] The processing module 701 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 702 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 702 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0400] Figure 8 This is another structural schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 8 The communication device 800 can be used to perform the above. Figure 4 For details regarding the process executed by the network device in the illustrated embodiment, please refer to the above. Figure 4 The relevant descriptions in the illustrated embodiments are as follows.

[0401] The communication device 800 includes a processing module 801 and a transceiver module 802. The processing module 801 is used for data or signal processing. The transceiver module 802 is used to implement corresponding communication functions; the transceiver module 802 can also be referred to as a communication interface or a communication module.

[0402] Optionally, the communication device 800 may further include a storage module for storing instructions and / or data. The processing module 801 can read the instructions and / or data from the storage module to enable the communication device to perform the aforementioned functions. Figure 4 The example shown.

[0403] The communication device 800 can be used to perform the above. Figure 4 The actions performed by the network device in the illustrated embodiment. The communication device 800 can be a network device or a component configurable within a network device. The processing module 801 is used to execute the above... Figure 4 The illustrated embodiment shows processing-related operations on the network device side. Optionally, the transceiver module 802 is used to perform the above-described operations. Figure 4 The embodiment shown illustrates the receiving-related operations on the network device side.

[0404] Optionally, the transceiver module 802 may include a sending module and a receiving module. The sending module is used to perform the above-described... Figure 4 The transmitting operation in the illustrated embodiment. The receiving module is used to perform the above. Figure 4 The receiving operation in the illustrated embodiment.

[0405] It should be noted that the communication device 800 may include a transmitting module but not a receiving module. Alternatively, the communication device 800 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 800 includes both transmitting and receiving actions.

[0406] The communication device 800 can be used to execute the following schemes:

[0407] Processing module 801 is used to determine at least one PRACH resource of terminal device, wherein each PRACH resource is associated with a reference signal resource of a neighboring cell of terminal device, and different PRACH resources are associated with different reference signal resources of neighboring cells;

[0408] The transceiver module 802 is used to send second configuration information to the terminal device, which is used to configure the multiple PRACH resources for the terminal device.

[0409] In one possible implementation, the at least one PRACH resource includes: at least one CFRA resource of a neighboring cell dedicated to beam recovery;

[0410] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and each reference signal resource of a neighboring cell corresponds to a candidate beam of the neighboring cell.

[0411] In another possible implementation, the at least one PRACH resource includes: at least one CBRA resource of a neighboring cell;

[0412] Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0413] In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource of the serving cell of the terminal device dedicated to beam recovery;

[0414] Each CFRA resource is associated with a reference signal resource of a neighboring cell, different CFRA resources are associated with different reference signal resources of neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

[0415] In another possible implementation, each CFRA resource is also associated with a reference signal resource of the serving cell, different CFRA resources are associated with different reference signal resources of the serving cell, and each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

[0416] In another possible implementation, the transceiver module 802 is also used for:

[0417] Send first configuration information to the terminal device. The first configuration information is used to configure a first resource set for the terminal device. The first resource set includes one or more reference signal resources of neighboring cells, and each reference signal resource corresponds to a candidate beam of a neighboring cell.

[0418] In another possible implementation, the reference signal resources in the first resource set include SSB resources and / or CSI-RS resources of neighboring cells.

[0419] It should be understood that the specific procedures for each module to execute the above-mentioned corresponding processes are described above. Figure 8 The embodiments shown have been described in detail, and for the sake of brevity, they will not be repeated here.

[0420] The processing module 801 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 802 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 802 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0421] Figure 9 This is another structural schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 9 The communication device 900 can be used to perform the above. Figure 5 For details regarding the process executed by the terminal device in the illustrated embodiment, please refer to the above. Figure 5 The relevant descriptions in the illustrated embodiments are as follows.

[0422] The communication device 900 includes a processing module 901. The communication device 900 also includes a transceiver module 902. The processing module 901 is used for data or signal processing. The transceiver module 902 is used to implement corresponding communication functions; the transceiver module 902 can also be referred to as a communication interface or communication module.

[0423] Optionally, the communication device 900 may further include a storage module for storing instructions and / or data, and the processing module 901 may read the instructions and / or data from the storage module to enable the communication device to perform the aforementioned functions. Figure 5 The example shown.

[0424] The communication device 900 can be used to perform the above. Figure 5 The actions performed by the terminal device in the illustrated embodiment. The communication device 900 can be a terminal device or a component configurable on a terminal device. The processing module 901 is used to execute the above... Figure 5 The embodiments shown depict processing-related operations on the terminal device side. Optionally, the transceiver module 902 is used to perform the above-described operations. Figure 5 The embodiment shown illustrates the receiving-related operations on the terminal device side.

[0425] Optionally, the transceiver module 902 may include a sending module and a receiving module. The sending module is used to perform the above-described... Figure 5 The transmitting operation in the illustrated embodiment. The receiving module is used to perform the above. Figure 5 The receiving operation in the illustrated embodiment.

[0426] It should be noted that the communication device 900 may include a transmitting module but not a receiving module. Alternatively, the communication device 900 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 900 includes both transmitting and receiving actions.

[0427] The communication device 900 can be used to execute the following schemes:

[0428] The processing module 901 is used to determine a first resource set, the first resource set including at least one first reference signal resource, the at least one first reference signal resource being used for beam failure detection of the neighboring cell of the communication device; if the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the neighboring cell, then the first reference signal resource included in the first resource set is used to perform beam failure detection on the serving beam.

[0429] In one possible implementation, the processing module 901 is further used for:

[0430] If the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the serving cell, then the second reference signal resource is used to perform beam failure detection on the serving beam. The second reference signal resource and the resource corresponding to the PDCCH DMRS carried on the serving beam have a QCL relationship.

[0431] In another possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the communication device; the processing module 901 is also used for:

[0432] If the reference signal resource corresponding to the serving beam of the communication device is the reference signal resource of the serving cell, then the third reference signal resource included in the first resource set is used to perform beam failure detection on the serving beam.

[0433] In another possible implementation, the first resource set includes a first subset and a second subset; the first subset is associated with the PCI of neighboring cells and includes at least one first reference signal resource; the second subset is associated with the PCI of the serving cell and includes at least one third reference signal resource.

[0434] In another possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell.

[0435] In another possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell.

[0436] In another possible implementation, the communication device also includes a transceiver module 902;

[0437] The transceiver module 902 is used to receive first configuration information from the network device, the first configuration information being used to configure a first resource set.

[0438] In another possible implementation, the at least one first reference signal resource includes the SSB resources of the neighboring cell and / or the CSI-RS resources of the neighboring cell.

[0439] It should be understood that the specific procedures for each module to execute the above-mentioned corresponding processes are described above. Figure 9 The embodiments shown have been described in detail, and for the sake of brevity, they will not be repeated here.

[0440] The processing module 901 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 902 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 902 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0441] Optionally, the above Figure 9 The communication device 900 shown can also be used to perform the above. Figure 6 The steps performed by the terminal device in the illustrated embodiment. For example, the communication device 900 can also be used to perform the following scheme:

[0442] The processing module 901 is used to perform beam failure detection on the service beam of the communication device 900 using the second reference signal resource. The second reference signal resource has a QCL relationship with the resource corresponding to the PDCCH DMRS carried on the service beam.

[0443] In one possible implementation, the processing module 901 is further used for:

[0444] A first resource set is determined, the first resource set including at least one third reference signal resource, the at least one third reference signal resource being used for beam failure detection of the serving cell of the communication device 900;

[0445] Processing module 901 is specifically used for:

[0446] If the reference signal resource corresponding to the serving beam of the communication device 900 is the reference signal resource of the neighboring cell accessed by the communication device 900, then the second reference signal resource is used to perform beam failure detection on the serving beam.

[0447] In another possible implementation, the at least one third reference signal resource includes the serving cell's SSB resources and / or the serving cell's CSI-RS resources.

[0448] Figure 10 This is another structural schematic diagram of the communication device according to an embodiment of this application. Please refer to... Figure 10 The communication device 1000 can be used to perform the above. Figure 5 For details regarding the process executed by the network device in the illustrated embodiment, please refer to the above. Figure 5 The relevant descriptions in the illustrated embodiments are as follows.

[0449] The communication device 1000 includes a processing module 1001 and a transceiver module 1002. The processing module 1001 is used for data or signal processing. The transceiver module 1002 is used to implement corresponding communication functions; the transceiver module 1002 can also be referred to as a communication interface or a communication module.

[0450] Optionally, the communication device 1000 may further include a storage module for storing instructions and / or data. The processing module 1001 can read the instructions and / or data from the storage module to enable the communication device to perform the aforementioned functions. Figure 5 The example shown.

[0451] The communication device 1000 can be used to perform the above. Figure 5 The actions performed by the network device in the illustrated embodiment. The communication device 1000 can be a network device or a component configurable on a network device. The processing module 1001 is used to execute the above... Figure 5 The illustrated embodiment shows processing-related operations on the network device side. Optionally, the transceiver module 1002 is used to perform the above-described operations. Figure 5 The embodiment shown illustrates the receiving-related operations on the network device side.

[0452] Optionally, the transceiver module 1002 may include a sending module and a receiving module. The sending module is used to perform the above-described... Figure 5 The transmitting operation in the illustrated embodiment. The receiving module is used to perform the above. Figure 5The receiving operation in the illustrated embodiment.

[0453] It should be noted that the communication device 1000 may include a transmitting module but not a receiving module. Alternatively, the communication device 1000 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 1000 includes both transmitting and receiving actions.

[0454] The communication device 1000 can be used to execute the following schemes:

[0455] Processing module 1001 is used to determine a first resource set, the first resource set including at least one first reference signal resource, the at least one first reference signal resource being used for beam failure detection of neighboring cells of terminal equipment;

[0456] The transceiver module 1002 is used to send first configuration information to the terminal device, and the first configuration information is used to configure a first resource set for the terminal device.

[0457] In another possible implementation, the first resource set further includes at least one third reference signal resource, which is used for beam failure detection of the serving cell of the terminal device.

[0458] In another possible implementation, the first resource set includes a first subset and a second subset; the first subset is associated with the PCI of the serving cell and includes at least one first reference signal resource; the second subset is associated with the PCI of the neighboring cells and includes at least one third reference signal resource.

[0459] In another possible implementation, each first reference signal resource in the first resource set is associated with the PCI of a neighboring cell.

[0460] In another possible implementation, each third reference signal resource in the first resource set is associated with the PCI of the serving cell.

[0461] In another possible implementation, the at least one first reference signal resource includes the SSB resources of the neighboring cell and / or the CSI-RS resources of the neighboring cell.

[0462] This application embodiment also provides a communication device 1100. The communication device 1100 includes a processor 1110, which is coupled to a memory 1120. The memory 1120 is used to store computer programs or instructions and / or data. The processor 1110 is used to execute the computer programs or instructions and / or data stored in the memory 1120, so that the methods in the above method embodiments are executed.

[0463] Optionally, the communication device 1100 may include one or more processors 1110.

[0464] Optionally, such as Figure 11 As shown, the communication device 1100 may also include a memory 1120.

[0465] Optionally, the communication device 1100 may include one or more memory 1120s.

[0466] Alternatively, the memory 1120 may be integrated with the processor 1110 or set separately.

[0467] Optionally, such as Figure 11 As shown, the communication device 1100 may further include a transceiver 1130, which is used for receiving and / or transmitting signals. For example, the processor 1110 is used to control the transceiver 1130 to receive and / or transmit signals.

[0468] As one approach, the communication device 1100 is used to implement the operations performed by the terminal device in the above method embodiments.

[0469] For example, processor 1110 is used to implement the processing-related operations performed by the terminal device in the above method embodiments, and transceiver 1130 is used to implement the sending and receiving-related operations performed by the terminal device in the above method embodiments.

[0470] As one option, the communication device 1100 is used to implement the operations performed by the network device in the above method embodiments.

[0471] For example, processor 1110 is used to implement the processing-related operations performed by the network device in the above method embodiments, and transceiver 1130 is used to implement the sending and receiving-related operations performed by the network device in the above method embodiments.

[0472] This application also provides a communication device 1200, which can be a terminal device, a processor of the terminal device, or a chip. The communication device 1200 can be used to perform the operations performed by the terminal device in the above method embodiments.

[0473] When the communication device 1200 is a terminal device Figure 12 A simplified structural diagram of a terminal device is shown. (For example...) Figure 12 As shown, the terminal device includes a processor, a memory, and a transceiver. The memory can store computer program code, and the transceiver includes a transmitter 1231, a receiver 1232, radio frequency circuitry (not shown in the figure), an antenna 1233, and input / output devices (not shown in the figure).

[0474] The processor is primarily used for processing communication protocols and data, controlling terminal devices, executing software programs, and processing software program data. The memory is primarily used for storing software programs and data. The radio frequency (RF) circuit is primarily used for converting baseband signals to RF signals and processing RF signals. The antenna is primarily used for transmitting and receiving RF signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are primarily used for receiving user input data and outputting data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0475] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor then converts the baseband signal back into data and processes it. For ease of explanation, Figure 12 Only one memory, processor, and transceiver are shown in the illustration. In actual terminal device products, there may be one or more processors and one or more memories. Memory can also be called storage medium or storage device, etc. Memory can be set up independently of the processor or integrated with the processor; this application does not limit this.

[0476] In this embodiment, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver module of the terminal device, and the processor with processing function can be regarded as the processing module of the terminal device.

[0477] like Figure 12 As shown, the terminal device includes a processor 1210, a memory 1220, and a transceiver 1230. The processor 1210 can also be referred to as a processing unit, processing board, processing module, processing device, etc., and the transceiver 1230 can also be referred to as a transceiver unit, transceiver, transceiver device, etc.

[0478] Optionally, the device in transceiver 1230 used to implement the receiving function can be regarded as a receiving module, and the device in transceiver 1230 used to implement the transmitting function can be regarded as a transmitting module. That is, transceiver 1230 includes a receiver and a transmitter. A transceiver may also be called a transceiver unit, transceiver module, or transceiver circuit, etc. A receiver may also be called a receiver unit, receiving module, or receiving circuit, etc. A transmitter may also be called a transmitter, transmitting module, or transmitting circuit, etc.

[0479] For example, in one implementation, processor 1210 is used to execute Figure 4 The transceiver 1230 is used to perform the processing actions on the terminal device side of the embodiment shown. Figure 4 The sending and receiving actions on the terminal device side. For example, the processor 1210 is used to perform... Figure 4 The processing operation of 401 in the illustrated embodiment. Transceiver 1230 is used to perform... Figure 4 The process 402 in the illustrated embodiment. Optionally, the transceiver 1230 is also used to perform... Figure 4 Examples 401c and 401d in the illustrated embodiments. Processor 1210 is also used to perform... Figure 4 The processing operations of 401a and 401b in the illustrated embodiments.

[0480] For example, in one implementation, processor 1210 is used to execute Figure 5 The transceiver 1230 is used to perform the processing actions on the terminal device side of the embodiment shown. Figure 5 The sending and receiving actions on the terminal device side. For example, the processor 1210 is used to perform... Figure 5 The processing operations 501 and 502 in the illustrated embodiment. Optionally, transceiver 1230 is used to perform... Figure 5 The process of 501a in the illustrated embodiment. Processor 1210 is also used to execute Figure 5 The processing operations 503 or 504 in the illustrated embodiments.

[0481] For example, in one implementation, processor 1210 is used to execute Figure 6 The transceiver 1230 is used to perform the processing actions on the terminal device side of the embodiment shown. Figure 6 The sending and receiving actions on the terminal device side. For example, the processor 1210 is used to perform... Figure 6 The processing operation of 601 in the illustrated embodiment. Optionally, transceiver 1230 is used to perform... Figure 6 The process of 601a in the illustrated embodiment. Processor 1210 is also used to execute Figure 6 The processing operation of 602 in the illustrated embodiment.

[0482] It should be understood that Figure 12 This is merely an example and not a limitation; the terminal device described above, which includes a transceiver module and a processing module, may not rely on... Figure 7 or Figure 9 The structure shown.

[0483] When the communication device 1200 is a chip, the chip includes a processor, a memory, and a transceiver. The transceiver can be an input / output circuit or a communication interface; the processor can be a processing module integrated on the chip, a microprocessor, or an integrated circuit. In the above method embodiments, the sending operation of the terminal device can be understood as the output of the chip, and the receiving operation of the terminal device in the above method embodiments can be understood as the input of the chip.

[0484] This application also provides a communication device 1300, which can be a network device or a chip. The communication device 1300 can be used to perform the above-described... Figure 4 , Figure 5 and Figure 6 The operations performed by the network device in the illustrated method embodiment.

[0485] When the communication device 1300 is a network device, such as a base station. Figure 13 A simplified schematic diagram of a base station structure is shown. The base station includes sections 1310, 1320, and 1330. Section 1310 is mainly used for baseband processing and base station control; section 1310 is typically the control center of the base station, often referred to as a processor, used to control the base station to perform processing operations on the network device side in the above method embodiments. Section 1320 is mainly used to store computer program code and data. Section 1330 is mainly used for the transmission and reception of radio frequency signals and the conversion between radio frequency signals and baseband signals; section 1330 is often referred to as a transceiver module, transceiver, transceiver circuit, or transceiver unit. The transceiver module of section 1330, also referred to as a transceiver or transceiver unit, includes an antenna 1333 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the device in section 1330 used to implement the receiving function can be regarded as a receiver, and the device used to implement the transmitting function can be regarded as a transmitter; that is, section 1330 includes a receiver 1332 and a transmitter 1331. A receiver can also be called a receiving module, receiver, or receiving circuit, while a transmitter can be called a transmitting module, transmitter, or transmitting circuit.

[0486] Sections 1310 and 1320 may include one or more circuit boards, each of which may include one or more processors and one or more memories. The processors are used to read and execute programs from the memories to implement baseband processing functions and control the base station. If multiple circuit boards exist, they can be interconnected to enhance processing capabilities. As an alternative implementation, multiple circuit boards may share one or more processors, multiple circuit boards may share one or more memories, or multiple circuit boards may simultaneously share one or more processors.

[0487] For example, in one implementation, the transceiver module of part 1330 is used to perform... Figures 4 to 6 The transmit / receive related processes are executed by the terminal device in the illustrated embodiment. The processor in section 1310 is used to execute... Figures 4 to 6 The process related to the processing performed by the terminal device in the illustrated embodiment.

[0488] It should be understood that Figure 13 This is for illustrative purposes only and not as a limitation. The network devices mentioned above, including processors, memory, and transceivers, may be independent of... Figure 8 or Figure 10 The structure shown.

[0489] When the communication device 1300 is a chip, the chip includes a transceiver, a memory, and a processor. The transceiver can be an input / output circuit or a communication interface; the processor can be a processor integrated on the chip, a microprocessor, or an integrated circuit. In the above method embodiments, the transmitting operation of the network device can be understood as the output of the chip, and the receiving operation of the network device in the above method embodiments can be understood as the input of the chip.

[0490] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a terminal device or a network device in the above method embodiments.

[0491] This application also provides a computer program product containing instructions that, when executed by a computer, cause the computer to implement the method executed by a terminal device or network device in the above method embodiments.

[0492] This application also provides a communication system, which includes the terminal device and network device described in the above embodiments.

[0493] This application also provides a chip device, including a processor, configured to call computer programs or computer instructions stored in a memory, so that the processor executes the above-described... Figures 4 to 6 The method of the embodiment shown.

[0494] In one possible implementation, the input of the chip device corresponds to the above. Figures 4 to 6 The receiving operation in the illustrated embodiment corresponds to the output of the chip device described above. Figures 4 to 6 The sending operation in the illustrated embodiment.

[0495] Optionally, the processor is coupled to the memory via an interface.

[0496] Optionally, the chip device may also include a memory that stores computer programs or computer instructions.

[0497] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more devices used to control the above. Figures 4 to 6The illustrated embodiment is an integrated circuit for program execution of the method. The memory mentioned above may be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM).

[0498] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the explanations and beneficial effects of the relevant content in any of the communication devices provided above can be referred to the corresponding method embodiments provided above, and will not be repeated here.

[0499] In this application, the terminal device or network device may include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system layer may be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0500] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0501] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, apparatuses, or modules, and may be electrical, mechanical, or other forms.

[0502] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0503] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0504] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essential contribution of the technical solution of this application, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the processes of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0505] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A beam recovery method, characterized in that, The method includes: When the serving beam of the terminal device fails and the reference signal resource corresponding to the serving beam is the reference signal resource of the neighboring cell, the terminal device determines the target physical random access channel resource associated with the target reference signal resource from at least one physical random access channel (PRACH) resource. The target reference signal resource is the reference signal resource corresponding to the target candidate beam of the neighboring cell of the terminal device. The terminal device initiates beam recovery of the neighboring cell based on the target physical random access channel resources.

2. The method according to claim 1, characterized in that, The at least one Physical Random Access Channel (PRACH) resource includes: at least one non-contentionable random access channel (CFRA) resource of the neighboring cell dedicated to beam recovery; Each CFRA resource is associated with a reference signal resource of the neighboring cell, different CFRA resources are associated with different reference signal resources of the neighboring cells, and each reference signal resource of the neighboring cell corresponds to a candidate beam of the neighboring cell.

3. The method according to claim 1, characterized in that, The at least one Physical Random Access Channel (PRACH) resource includes: at least one contested random access channel (CBRA) resource of the neighboring cell; Each CBRA resource is associated with a reference signal resource of a neighboring cell, different CBRA resources are associated with different reference signal resources of the neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

4. The method according to claim 1, characterized in that, The at least one Physical Random Access Channel (PRACH) resource includes: at least one non-contentionable random access channel (CFRA) resource of the serving cell of the terminal device dedicated to beam recovery; Each CFRA resource is associated with a reference signal resource of the neighboring cell, different CFRA resources are associated with different reference signal resources of the neighboring cells, and the reference signal resource of each neighboring cell corresponds to a candidate beam of the neighboring cell.

5. The method according to claim 2 or 4, characterized in that, Each CFRA resource is also associated with a reference signal resource of the serving cell. Different CFRA resources are associated with different reference signal resources of the serving cell, and each reference signal resource of the serving cell corresponds to a candidate beam of the serving cell.

6. The method according to any one of claims 1 to 5, characterized in that, Before the terminal device determines the target physical random access channel resource associated with the target reference signal resource from at least one physical random access channel (PRACH) resource, the method further includes: The terminal device measures reference signal resources in a first resource set to obtain measurement results. The first resource set includes one or more reference signal resources of the neighboring cells, and each reference signal resource corresponds to a candidate beam of the neighboring cell. The terminal device determines the target reference signal resource from one or more reference signal resources of the neighboring cell based on the measurement results.

7. The method according to claim 6, characterized in that, The target reference signal resource is one of the reference signal resources in the measurement results whose signal quality is greater than or equal to a first threshold value.

8. The method according to claim 6 or 7, characterized in that, The method further includes: The terminal device receives first configuration information from the network device, the first configuration information being used to configure the first resource set for the terminal device.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: The terminal device receives second configuration information from the network device; The second configuration information is used to configure the at least one Physical Random Access Channel (PRACH) resource. Each PRACH resource is associated with a reference signal resource of the neighboring cell, and different PRACH resources are associated with different reference signal resources of the neighboring cells.

10. A beam failure detection method, characterized in that, The method includes: The terminal device determines a first resource set, which includes at least one first reference signal resource and at least one third reference signal resource. The at least one first reference signal resource is used for beam failure detection of the terminal device's neighboring cells, and the at least one third reference signal resource is used for beam failure detection of the terminal device's serving cell. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the neighboring cell, then the terminal device uses the first reference signal resource included in the first resource set to perform beam failure detection on the serving beam. If the reference signal resource corresponding to the serving beam of the terminal device is the reference signal resource of the serving cell, then the terminal device uses the second reference signal resource to perform beam failure detection on the serving beam. The second reference signal resource and the resource corresponding to the Physical Downlink Control Channel Demodulation Reference Signal (PDCCH) DMRS carried on the serving beam have a quasi-co-position QCL relationship, or... The terminal device uses the third reference signal resources included in the first resource set to perform beam failure detection on the service beam.

11. The method according to claim 10, characterized in that, The first resource set includes a first subset and a second subset; The first subset is associated with the Physical Cell Identifier (PCI) of the neighboring cells, and the first subset includes the at least one first reference signaling resource; The second subset is associated with the Physical Cell Identifier (PCI) of the serving cell, and the second subset includes the at least one third reference signaling resource.

12. The method according to claim 10, characterized in that, Each first reference signal resource in the first resource set is associated with the physical cell identifier (PCI) of the neighboring cell.

13. The method according to claim 10 or 12, characterized in that, Each third reference signal resource in the first resource set is associated with the Physical Cell Identifier (PCI) of the serving cell.

14. The method according to any one of claims 10 to 13, characterized in that, The method further includes: The terminal device receives first configuration information from the network device, the first configuration information being used to configure the first resource set.

15. A communication device, characterized in that, The communication device includes: Memory, used to store computer instructions; A processor is configured to execute a computer program or computer instructions stored in the memory, causing the communication device to perform the method as described in any one of claims 1 to 9; or, causing the communication device to perform the method as described in any one of claims 10 to 14.

16. A communication device, characterized in that, The communication device includes a processor for executing a computer program or computer instructions in a memory to perform the method as described in any one of claims 1 to 9, or to perform the method as described in any one of claims 10 to 14.

17. A communication device, characterized in that, The communication device includes a processor, the processor being configured to perform the method as described in any one of claims 1 to 9, or to perform the method as described in any one of claims 10 to 14.

18. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a communication device, causes the communication device to perform the method as described in any one of claims 1 to 9, or causes the communication device to perform the method as described in any one of claims 10 to 14.

19. A computer program product, characterized in that, The computer program product includes a program that, when executed by a communication device, causes the communication device to perform the method as described in any one of claims 1 to 9, or causes the communication device to perform the method as described in any one of claims 10 to 14.

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