CN116156629A

CN116156629A - Beam recovery method, beam failure detection method and related device

Info

Publication number: CN116156629A
Application number: CN202111365205.6A
Authority: CN
Inventors: 李芳�; 袁世通; 樊波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2023-05-23
Also published as: WO2023088114A1

Abstract

The embodiment of the application discloses a beam recovery method, which is used for beam recovery of neighbor cells of terminal equipment and improves communication performance. The method comprises the following steps: the method comprises the steps that a terminal device determines target physical random access channel resources associated with target reference signal resources from at least one physical random access channel PRACH resource, wherein the target reference signal resources are reference signal resources corresponding to target candidate beams of neighbor cells of the terminal device; the terminal equipment initiates beam recovery of the neighbor cell based on the target physical random access channel resource.

Description

Beam recovery method, beam failure detection method and related device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a beam recovery method, a beam failure detection method, and a related device.

Background

The fifth generation mobile communication system (5th generation,5G) can transmit data using high frequency communication, i.e., using ultra-high frequency band (> 6 GHz) signals. A major problem with high frequency communications is that the signal energy drops sharply with transmission distance, resulting in a short signal transmission distance. To overcome this problem, the high frequency communication adopts an analog beam technique, and the signal energy is concentrated in a small angle range by weighting the antenna array to form a signal (called an analog beam, abbreviated as a beam) similar to a light beam, thereby increasing the transmission distance.

The terminal device may communicate with the network device via a beam of the serving cell. When the beam is blocked, normal communication between the terminal device and the network device is not possible. The terminal device may identify the new beam and initiate a beam restoration request to the network device. The network device may feed back a beam restoration response to the terminal device so that the network device and the terminal device re-find a beam satisfying the communication quality.

The terminal device may communicate with the network device via the beam of the neighbor cell in addition to the beam of the serving cell. In this scenario, when the beam of the neighbor cell fails, how the terminal device performs beam recovery of the neighbor cell is a considerable problem.

Disclosure of Invention

The application provides a beam recovery method, a beam failure detection method and a related device, which are used for beam recovery and detection of neighbor cells of terminal equipment. The method and the device realize the detection and recovery of beam failure of the terminal equipment supporting neighbor cells, and improve communication performance.

A first aspect of the present application provides a beam recovery method, including:

the terminal device determines a target PRACH resource associated with a target reference signal resource from at least one physical random access channel (physical random access channel, PRACH) resource, the target PRACH resource being a reference signal resource corresponding to a target candidate beam of a neighbor cell of the terminal device. The terminal device then initiates beam recovery of the neighbor cell based on the target PRACH resource.

In the above technical solution, the terminal device may determine a target PRACH resource associated with the target reference signal resource from at least one PRACH resource. If the terminal equipment has only one PRACH resource, the terminal equipment directly takes the PRACH resource as a target PRACH resource. The terminal equipment initiates beam recovery of the neighbor cell based on the target PRACH resource. Therefore, the terminal equipment initiates the beam recovery of the neighbor cell, so that the beam recovery of the neighbor cell is supported, and the communication performance is improved.

In a possible implementation, the at least one PRACH resource includes: at least one non-contention random access (CFRA) resource dedicated to beam recovery for a neighbor cell;

wherein each CFRA resource is associated with one reference signal resource of a neighbor cell, different CFRA resources are associated with different reference signal resources of the neighbor cell, and each reference signal resource of the neighbor cell corresponds to one candidate beam of the neighbor cell.

In this implementation, one possible implementation of at least one PRACH resource of the terminal device is shown, and the network device may configure at least one CFRA resource dedicated to beam recovery for a neighbor cell of the terminal device. Thereby facilitating beam recovery of neighbor cells by the terminal device based on the CFRA resources. The method and the device realize that the terminal equipment supports beam recovery of the neighbor cells so as to improve the communication performance of the terminal equipment.

In another possible implementation, the at least one PRACH resource includes: at least one contended random access (CBRA) resource of the neighbor cell;

wherein each CBRA resource is associated with one reference signal resource of a neighbor cell, different CBRA resources are associated with different reference signal resources of the neighbor cell, and the reference signal resource of each neighbor cell corresponds to one candidate beam of the neighbor cell.

In this implementation, another possible implementation of at least one PRACH resource of the terminal device is shown. The network device may configure CBRA resources for neighbor cells of the terminal device. Thereby facilitating beam recovery of neighbor cells by the terminal device based on the CBRA resource. The method and the device realize that the terminal equipment supports beam recovery of the neighbor cells so as to improve the communication performance of the terminal equipment. The implementation mode of the scheme is enriched, and the robustness of the terminal equipment for carrying out the beam recovery of the neighbor cell is improved.

In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource dedicated to beam restoration for a serving cell of a terminal device;

wherein each CFRA resource is associated with one reference signal resource of a neighbor cell, different CFRA resources are associated with different reference signal resources of a neighbor cell, and the reference signal resource of each neighbor cell corresponds to one candidate beam of the neighbor cell.

In this implementation, another possible implementation of at least one PRACH resource of the terminal device is shown. The network device may configure CFRA resources for a serving cell of the terminal device. The CFRA resource can be associated with the reference signal resource of the neighbor cell, so that the terminal equipment can recover the beam of the neighbor cell based on the CFRA resource. The method and the device realize that the terminal equipment supports beam recovery of the neighbor cells so as to improve the communication performance of the terminal equipment. The CFRA resource is a CFRA resource of a serving cell and is used for initiating random access of the serving cell. The CFRA resource is also related to the reference signal resource of the neighbor cell, so that the terminal equipment supports beam recovery of the neighbor cell, the communication performance of the terminal equipment is improved, and the utilization rate of the PRACH resource is improved.

In another possible implementation, each CFRA resource is also associated with one reference signal resource of the serving cell, a different CFRA resource is associated with a different reference signal resource of the serving cell, and each reference signal resource of the serving cell is associated with one candidate beam of the serving cell. In this implementation, the CFRA resource of the serving cell is also associated with the reference signal resource of the serving cell for beam recovery of the serving cell. Is beneficial to improving the utilization rate of resources.

In another possible implementation, the method further includes:

if the service beam of the terminal equipment fails and the reference signal resource corresponding to the service beam is the reference signal resource of the neighbor cell, the terminal equipment determines the action of associating the target PRACH resource with the target reference signal resource from the PRACH resource.

In this implementation manner, the terminal device may first determine whether the serving beam is a beam of a neighbor cell, and if so, the terminal device performs the above-described action of determining, from the PRACH resources, a target PRACH resource associated with the target reference signal resource. Thereby facilitating the terminal device to select the target PRACH resource which can be used for beam recovery of the neighbor cell, and carrying out beam recovery of the neighbor cell based on the target PRACH resource.

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

the terminal equipment measures reference signal resources in a first resource set to obtain a measurement result, wherein the first resource set comprises one or more reference signal resources of a neighbor cell, and each reference signal resource corresponds to one candidate beam of the neighbor cell; and the terminal equipment determines target reference signal resources from one or more reference signal resources of the neighbor cells according to the measurement result.

In this implementation, the terminal device may measure one or more reference signal resources of the neighbor cell and select a target reference signal resource therefrom. The target reference signal resource corresponds to a target candidate beam, that is, the terminal device selects a candidate beam, so that the terminal device initiates beam recovery to the neighbor cell and requests to access the target candidate beam.

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

In the implementation manner, the terminal equipment can select the reference signal resource with better signal quality as the target reference signal resource, so that the terminal equipment can request to access the beam with better signal quality in the process of beam recovery in the neighbor cell, and the communication quality of the terminal equipment in the neighbor cell is improved.

In another possible implementation, 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 set of resources for the terminal device.

In this implementation, the network device may configure the first set of resources for the terminal device to facilitate the terminal device to select the target reference signal resource. Therefore, the process of beam recovery of the terminal equipment in the neighbor cell is facilitated, and the beam with better signal quality is requested to be accessed, so that the communication quality of the terminal equipment in the neighbor cell is improved.

In another possible implementation, the method further includes: the terminal equipment receives second configuration information from the network equipment;

the second configuration information is used for configuring at least one PRACH resource, each PRACH resource in the at least one PRACH resource is associated with one reference signal resource of a neighbor cell, and different PRACH resources are associated with different reference signal resources of the neighbor cell.

In this possible implementation, the network device may configure at least one PRACH resource for the terminal device, each PRACH resource being associated with one reference signal resource of a neighbor cell, different PRACH resources being associated with different reference signal resources of the neighbor cell. Thereby, after the terminal equipment selects the corresponding target reference signal resource, the associated PRACH resource can be determined to initiate the beam recovery of the neighbor cell to the network equipment. Thus, the network equipment and the terminal equipment can be aligned, and the network equipment can know the beam which the terminal equipment requests to access through the target PRACH resource corresponding to the target reference signal resource. Thereby realizing the beam recovery of the terminal equipment to the neighbor cell.

In another possible implementation, the reference signal resources in the first set of resources include synchronization signal block and physical broadcast channel block (synchronization signal and physical broadcast channel block, SSB) resources and/or channel state information-reference signal (channel state information-reference signal, CSI-RS) resources of the neighbor cells. In this implementation, two possible resource types of reference signal resources included in the first resource set are shown, which is advantageous for implementation of the scheme.

A second aspect of the present application provides a beam recovery method, including:

the network equipment determines at least one PRACH resource of the terminal equipment, wherein each PRACH resource in the at least one PRACH resource is associated with one reference signal resource of a neighbor cell of the terminal equipment, and different PRACH resources are associated with different reference signal resources of the neighbor cell; and the network equipment is used for configuring PRACH resources for the terminal equipment.

In the above technical solution, the network device may configure at least one PRACH resource for the terminal device, where each PRACH resource is associated with one reference signal resource of a neighbor cell, and different PRACH resources are associated with different reference signal resources of a neighbor cell. Thereby, after the terminal equipment selects the corresponding target reference signal resource, the associated PRACH resource can be determined to initiate the beam recovery of the neighbor cell to the network equipment. Thus, the network equipment and the terminal equipment can be aligned, and the network equipment can know the beam which the terminal equipment requests to access through the target PRACH resource corresponding to the target reference signal resource. Thereby realizing the beam recovery of the terminal equipment to the neighbor cell.

In a possible implementation, the at least one PRACH resource includes: at least one CFRA resource dedicated to beam restoration by the neighbor cell;

In this implementation, one possible implementation of the at least one PRACH resource of the terminal device is shown, the network device may configure at least one CFRA resource dedicated to beam restoration for a neighbor cell of the terminal device. Thereby facilitating beam recovery of neighbor cells by the terminal device based on the CFRA resources. The method and the device realize that the terminal equipment supports beam recovery of the neighbor cells so as to improve the communication performance of the terminal equipment.

In another possible implementation, the at least one PRACH resource includes: at least one CBRA resource of a neighbor cell;

In this implementation, another possible implementation of the at least one PRACH resource of the terminal device is shown. The network device may configure CBRA resources for neighbor cells of the terminal device. Thereby facilitating beam recovery of neighbor cells by the terminal device based on the CBRA resource. The method and the device realize that the terminal equipment supports beam recovery of the neighbor cells so as to improve the communication performance of the terminal equipment. The implementation mode of the scheme is enriched, and the robustness of the terminal equipment for carrying out the beam recovery of the neighbor cell is improved.

In this implementation, another possible implementation of the at least one PRACH resource of the terminal device is shown. The network device may configure CFRA resources for a serving cell of the terminal device. The CFRA resource can be associated with the reference signal resource of the neighbor cell, so that the terminal equipment can recover the beam of the neighbor cell based on the CFRA resource. The method and the device realize that the terminal equipment supports beam recovery of the neighbor cells so as to improve the communication performance of the terminal equipment. The CFRA resource is a CFRA resource of a serving cell and is used for initiating random access of the serving cell. The CFRA resource is also related to the reference signal resource of the neighbor cell, so that the terminal equipment supports beam recovery of the neighbor cell, the communication performance of the terminal equipment is improved, and the utilization rate of the PRACH resource is improved.

In another possible implementation, each CFRA resource is also associated with one 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 one candidate beam of the served cell.

In this implementation, each CFRA resource of the serving cell is also associated with a reference signal resource of the serving cell for beam recovery of the serving cell. Is beneficial to improving the utilization rate of resources.

In another possible implementation, the method further includes:

the network device sends first configuration information to the terminal device, wherein the first configuration information is used for configuring a first resource set for the terminal device, the first resource set comprises one or more reference signal resources of a neighbor cell, and each reference signal resource corresponds to one candidate wave beam of the neighbor cell.

In another possible implementation, the reference signal resources in the first set of resources include SSB resources and/or CSI-RS resources of the neighbor cell. In this implementation, two possible resource types of reference signal resources included in the first resource set are shown, which is advantageous for implementation of the scheme.

A third aspect of the present application provides a beam failure detection method, including:

the method comprises the steps that a terminal device determines a first resource set, wherein the first resource set comprises at least one first reference signal resource, and the at least one first reference signal resource is used for beam failure detection of a neighbor cell of the terminal device; if the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell, the terminal equipment adopts the first reference signal resource included in the first resource set to perform beam failure detection on the service beam.

In the above technical solution, if the reference signal resource corresponding to the service beam of the terminal device is the reference signal resource of the neighbor cell, or if the service beam of the terminal device is the beam of the neighbor cell, or if the reference signal resource included in the quasi-co-location (QCL) information corresponding to the service beam of the terminal device is the reference signal resource of the neighbor cell, the terminal device uses part or all of the first reference signal resources included in the first resource set to perform beam failure detection on the service beam. Therefore, when the service beam of the neighbor cell fails, the terminal equipment can detect the beam failure of the service beam of the neighbor cell, so that the communication performance of the terminal equipment is improved. Namely, the terminal equipment can complete the beam failure detection of the neighbor cell without radio resource control (radio resource control, RRC) reconfiguration, and the communication performance of the terminal equipment is improved.

In a possible implementation manner, the method further includes:

if the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts a second reference signal resource to perform beam failure detection on the service beam, and the second reference signal resource has a QCL relationship with the resource corresponding to the physical downlink control channel demodulation reference signal (physical downlink control channel demodulation reference signal, PDCCH DMRS) carried on the service beam.

In this implementation manner, if the reference signal resource corresponding to the service beam of the terminal device is a reference signal resource of the serving cell, or in other words, if the service beam of the terminal device is a beam of the serving cell; or if the reference signal resource included in the QCL information corresponding to the service beam 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 service beam. Therefore, when the service beam of the service cell fails, the terminal equipment can detect the beam failure of the service beam of the service cell, and the communication performance is improved.

In another possible implementation manner, the first resource set further includes at least one third reference signal resource, where the at least one third reference signal resource is used for beam failure detection of a serving cell of the terminal device; the method further comprises the steps of:

If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts the third reference signal resource included in the first resource set to perform beam failure detection on the service beam.

In this possible implementation, the first set of resources further comprises at least one third reference signal resource for beam failure detection of a serving cell of the terminal device. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, or if the service beam of the terminal equipment is the beam of the service cell; or if the reference signal resource included in the QCL information corresponding to the service beam is the reference signal resource of the serving cell, the terminal device uses part or all of the third reference signal resource included in the first resource set to perform beam failure detection on the service beam. Therefore, when the service beam of the service cell fails, the terminal equipment can detect the beam failure of the service beam of the service cell, and the communication performance is improved. That is, the network device configures at least one third reference signal resource for beam failure detection for the serving cell of the terminal device, and the terminal device may preferentially use the at least one third reference signal resource for beam failure detection of the serving beam.

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

In this possible implementation, the first set of resources may comprise two subsets, including reference signal resources for beam failure detection of the neighbor cell and reference signal resources for beam failure detection of the serving cell, respectively. And, the two subsets are respectively associated with the PCI of the corresponding cell, so that the terminal equipment can select the corresponding reference signal resource from the first resource set according to the cell to which the service beam belongs to perform beam failure detection.

In another possible implementation, each first reference signal resource in the first set of resources is associated with a PCI of the neighbor cell. In this possible implementation, each first reference signal resource in the first resource set is associated with a PCI of the neighbor cell, so that the terminal device can determine the reference signal resource that can be used for beam failure detection of the neighbor cell.

In another possible implementation, each third reference signal resource in the first set of resources is associated with a PCI of the serving cell. In this possible implementation, each third reference signal resource in the first resource set is associated with a PCI of the serving cell, so that the terminal device can determine the reference signal resource that can be used for beam failure detection of the serving cell.

In another possible implementation, 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 set of resources.

In this possible implementation manner, the network device may configure the first resource set for the terminal device, so as to implement beam failure detection for the service beam of the neighbor cell by the terminal device based on the first resource set. And the communication performance of the terminal equipment is improved.

In another possible implementation, the at least one first reference signal resource includes SSB resources of the neighbor cell and/or CSI-RS resources of the neighbor cell. The at least one third reference signal resource comprises SSB resources of the serving cell and/or CSI-RS resources of the serving cell. In this implementation, two possible resource types of the first reference signal resource and the third reference signal resource are shown, which is advantageous for implementation of the scheme.

A fourth aspect of the present application provides a beam failure detection method, including:

the method comprises the steps that a network device determines a first resource set, wherein the first resource set comprises at least one first reference signal resource, and the at least one first reference signal resource is used for beam failure detection of a neighbor cell of a terminal device; the network device sends first configuration information to the terminal device, wherein the first configuration information is used for configuring a first resource set for the terminal device.

In the above technical solution, the network device may configure the first resource set for the terminal device, so that when the service beam of the neighbor cell fails, the terminal device may perform beam failure detection on the service beam of the neighbor cell based on the first resource set. The terminal equipment can complete the beam failure detection of the neighbor cell under the condition of not carrying out RRC reconfiguration, and the communication performance of the terminal equipment is improved.

In another possible implementation, the first set of resources further includes at least one third reference signal resource, the at least one third reference signal resource being used for beam failure detection of a serving cell of the terminal device.

In this possible implementation, the first set of resources further comprises at least one third reference signal resource for beam failure detection of a serving cell of the terminal device. Therefore, when the service beam of the service cell fails, the terminal equipment adopts the third reference signal resource included in the first resource set to detect the beam failure of the service beam, and the communication performance is improved.

In another possible implementation, the first set of resources includes a first subset and a second subset; a first subset associated with a PCI of the serving cell, the first subset including at least one first reference signal resource; the second subset is associated with PCIs of neighbor cells, the second subset including at least one third reference signal resource.

A fifth aspect of the present application provides a beam failure detection method, including:

the terminal equipment adopts a second reference signal resource to carry out beam failure detection on the service beam of the terminal equipment, and the second reference signal resource has a QCL relation with the resource corresponding to PDCCH DMRS carried on the service beam. Therefore, the terminal equipment realizes the beam failure detection of the neighbor cells through the technical scheme. The terminal equipment can complete the beam failure detection of the neighbor cell under the condition of not carrying out RRC reconfiguration, thereby improving the communication performance.

In a possible implementation manner, the method further includes:

the method comprises the steps that a terminal device determines a first resource set, wherein the first resource set comprises at least one third reference signal resource, and the at least one third reference signal resource is used for beam failure detection of a serving cell of the terminal device;

The terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam of the terminal equipment, and the method comprises the following steps: if the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell accessed by the terminal equipment, the terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam.

In this possible implementation, the network device configures a first set of resources for the terminal device, and the first set of resources includes at least one third reference signal resource for beam failure detection of a serving cell of the terminal device. And if the service beam is the beam of the neighbor cell, the terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam. The method and the device can complete beam failure detection of the neighbor cells under the condition that RRC reconfiguration is not carried out by the terminal equipment, and improve communication performance.

In another possible implementation, the at least one third reference signal resource includes SSB resources of the serving cell and/or CSI-RS resources of the serving cell. In this implementation two possible resource types of the third reference signal resource are shown, facilitating implementation of the scheme.

A sixth aspect of the present application provides a communication apparatus, comprising:

a processing module, configured to determine a target PRACH resource associated with a target reference signal resource from at least one PRACH resource, where the target PRACH resource is a reference signal resource corresponding to a target candidate beam of a neighbor cell of the communication device;

and the receiving and transmitting module is used for initiating beam recovery of the neighbor cells based on the target PRACH resources.

In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource dedicated to beam restoration by a serving cell of the communication apparatus;

In another possible implementation, each CFRA resource is also associated with one 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 one candidate beam of the serving cell.

In another possible implementation, the processing module is further configured to:

if the service beam of the communication device fails and the reference signal resource corresponding to the service beam is the reference signal resource of the neighbor cell, the action of determining the target PRACH resource related to the target reference signal resource from the at least one PRACH resource is executed.

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

Measuring reference signal resources in a first resource set to obtain a measurement result, wherein the first resource set comprises one or more reference signal resources of a neighbor cell, and each reference signal resource corresponds to one candidate beam of the neighbor cell;

and determining target reference signal resources from one or more reference signal resources of the neighbor cells according to the measurement results.

In another possible implementation, the transceiver module is further configured to:

first configuration information is received from the network device, the first configuration information being used to configure a first set of resources for the communication device.

receiving second configuration information from the network device;

In another possible implementation, the reference signal resources in the first set of resources include SSB resources and/or CSI-RS resources of the neighbor cell.

A seventh aspect of the present application provides a communication apparatus, comprising:

a processing module, configured to determine at least one PRACH resource of the terminal device, where each PRACH resource in the at least one PRACH resource is associated with one reference signal resource of a neighbor cell of the terminal device, and different PRACH resources are associated with different reference signal resources of the neighbor cell;

and the transceiver module is used for configuring second configuration information of the terminal equipment, wherein the second configuration information is used for configuring the at least one PRACH resource for the terminal equipment.

and sending first configuration information to the terminal equipment, wherein the first configuration information is used for configuring a first resource set for the terminal equipment, the first resource set comprises one or more reference signal resources of the neighbor cell, and each reference signal resource corresponds to one candidate wave beam of the neighbor cell.

An eighth aspect of the present application provides a communication apparatus, comprising:

a processing module configured to determine a first set of resources including at least one first reference signal resource, the at least one first reference signal resource being used for beam failure detection of a neighbor cell of the communication device; if the reference signal resource corresponding to the service beam of the communication device is the reference signal resource of the neighbor cell, performing beam failure detection on the service beam by adopting the first reference signal resource included in the first resource set.

In a possible implementation manner, the processing module is further configured to:

if the reference signal resource corresponding to the service beam of the communication device is the reference signal resource of the service cell, performing beam failure detection on the service beam by adopting a second reference signal resource, wherein the second reference signal resource has a QCL relationship with the resource corresponding to PDCCH DMRS carried on the service beam.

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

if the reference signal resource corresponding to the service beam of the communication device is the reference signal resource of the service cell, adopting the third reference signal resource included in the first resource set to perform beam failure detection on the service beam.

In another possible implementation, the first set of resources includes a first subset and a second subset; a first subset of PCIs associated with neighbor cells, the first subset including at least one first reference signal resource; the second subset is associated with a PCI of the serving cell, the second subset comprising at least one third reference signal resource.

In another possible implementation, each first reference signal resource in the first set of resources is associated with a PCI of the neighbor cell.

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

In another possible implementation manner, the communication device further includes a transceiver module;

and the transceiver module is used for receiving first configuration information from the network equipment, and the first configuration information is used for configuring the first resource set.

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

A ninth aspect of the present application provides a communication apparatus, comprising:

a processing module, configured to determine a first resource set, where the first resource set includes at least one first reference signal resource, and the at least one first reference signal resource is used for beam failure detection of a neighbor cell of the terminal device;

The transceiver module is used for providing first configuration information for the terminal equipment, and the first configuration information is used for configuring a first resource set for the terminal equipment.

A tenth aspect of the present application provides a communication apparatus, comprising:

And the processing module is used for carrying out beam failure detection on the service beam of the communication device by adopting a second reference signal resource, and the second reference signal resource has a QCL relationship with resources corresponding to PDCCH DMRS carried on the service beam.

determining a first set of resources, the first set of resources including at least one third reference signal resource, the at least one third reference signal resource being used for beam failure detection of a serving cell of the communication device;

the processing module is specifically used for:

if the reference signal resource corresponding to the service beam of the communication device is the reference signal resource of the neighbor cell accessed by the communication device, adopting the second reference signal resource to detect the beam failure of the service beam.

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

An eleventh aspect of the present application provides a communication apparatus, comprising: a processor and a memory. The memory has stored therein a computer program or computer instructions for invoking and running the computer program or computer instructions stored in the memory to cause the processor to implement any of the implementations of any of the first to fifth aspects.

Optionally, the communication device further comprises a transceiver, and the processor is configured to control the transceiver to transmit and receive signals.

A twelfth aspect of the present application provides a communication device comprising a processor. The processor is configured to invoke a computer program or computer instructions stored therein to cause the processor to implement any of the implementations as in any of the first to fifth aspects.

A thirteenth aspect of the present application provides a communication device comprising a processor for performing any one of the implementations of the first to fifth aspects.

A fourteenth aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform an implementation of any of the first to fifth aspects.

A fifteenth aspect of the present application provides a computer readable storage medium comprising computer instructions which, when run on a computer, cause the computer to perform any one of the implementations of any one of the first to fifth aspects.

A sixteenth aspect of the present application provides a chip device comprising a processor for invoking a computer program or computer instructions in a memory to cause the processor to perform any of the implementations of any of the first to fifth aspects above.

Optionally, the processor is coupled to the memory through an interface.

From the above technical solutions, the embodiments of the present application have the following advantages:

according to the technical scheme, the terminal equipment determines the target PRACH resource associated with the target reference signal resource from at least one PRACH resource, wherein the target PRACH resource is the reference signal resource corresponding to the target candidate beam of the neighbor cell of the terminal equipment. The terminal device then initiates beam recovery of the neighbor cell based on the target PRACH resource. From this, it can be known that 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 of the neighbor cell based on the target PRACH resource, so as to support beam recovery of the terminal device to the neighbor cell, and improve communication performance.

Drawings

Fig. 1 is a schematic diagram of a scenario to which a beam recovery method and a beam failure detection method according to an embodiment of the present application are applicable;

Fig. 2 is a schematic diagram of another scenario to which the beam recovery method and the beam failure detection method according to the embodiments of the present application are applicable;

fig. 3 is a schematic structural diagram of a medium access control element (medium access control control element, MAC CE) adapted to activate a transmission configuration indication state (transmission configuration indicator state, TCI-state) according to the beam usage method of the embodiment of the present application;

FIG. 4 is a schematic diagram of one embodiment of a beam recovery method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of one embodiment of a beam failure detection method according to the embodiments of the present application;

FIG. 6 is a schematic diagram of another embodiment of a beam failure detection method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is another schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a beam recovery method, a beam failure detection method and a related device, which are used for beam recovery and detection of neighbor cells of terminal equipment. The method and the device realize the detection and recovery of beam failure of the terminal equipment supporting neighbor cells, and improve communication performance.

In the present application, "at least one" means one or more, and "a plurality" means two or more. For example, the at least one PRACH resource comprises one PRACH resource or comprises a plurality of PRACH resources. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c. Wherein a, b and c can be single or multiple.

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the application can be applied to various communication systems. Such as a 5G system, a New Radio (NR) system, a long term evolution (long term evolution, LTE) system, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD), a universal mobile telecommunications system (universal mobile telecommunication system, UMTS), a mobile telecommunications system behind a 5G network (e.g., a 6G mobile telecommunications system), an internet of vehicles (vehicle to everything, V2X) telecommunications system, and the like.

The communication system suitable for the application comprises the terminal equipment and the network equipment, wherein communication transmission can be carried out between the terminal equipment and the network equipment through wave beams.

The terminal device and the network device of the present application are described below.

The terminal device may be a wireless terminal device capable of receiving network device scheduling and indication information. The terminal device may be a device that provides voice and/or data connectivity to a user, or a handheld device with wireless connectivity, or other processing device connected to a wireless modem.

A terminal device, also called User Equipment (UE), mobile Station (MS), mobile Terminal (MT), etc. A terminal device is a device that includes wireless communication functionality (providing voice/data connectivity to a user). For example, a handheld device having a wireless connection function, an in-vehicle device, or the like. Currently, examples of some terminal devices are: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in the internet of vehicles, a wireless terminal in the unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in the smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city, or a wireless terminal in smart home (smart home), and the like. For example, the wireless terminal in the internet of vehicles may be a vehicle-mounted device, a whole vehicle device, a vehicle-mounted module, a vehicle, or the like. The wireless terminal in the industrial control can be a camera, a robot and the like. The wireless terminal in the smart home can be a television, an air conditioner, a floor sweeping machine, a sound box, a set top box and the like.

The network device may be a device in a wireless network. For example, the network device may be a device deployed in a radio access network to provide wireless communication functionality for terminal devices. For example, the network device may be a radio access network (radio access network, RAN) node, also referred to as access network device, that accesses the terminal device to the wireless network.

Network devices include, but are not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (home evolved NodeB, or home Node B, HNB, for example), a baseband unit (BBU), an Access Point (AP) in a wireless fidelity (wireless fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), etc., may also be a network device in a 5G mobile communication system. For example, next generation base stations (gNB) in NR systems, transmission reception points (transmission reception point, TRP), TP; or one or a group (including a plurality of antenna panels) of base stations in a 5G mobile communication system; alternatively, the network device may also be a network node constituting a gNB or a transmission point. Such as a BBU, or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the RRC, packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DU is responsible for handling physical layer protocols and real-time services, and implements functions of a radio link control (radio link control, RLC), MAC, and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. The information of the RRC layer may eventually become information of the PHY layer or may be converted from the information of the PHY layer. Under this architecture, higher layer signaling (e.g., RRC layer signaling) may also be considered to be sent by DUs, or by DUs and AAUs. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in the RAN, or may be divided into network devices in a Core Network (CN), which is not limited in this application.

Two possible application scenarios to which the present application applies are presented below.

Fig. 1 is a schematic diagram of a scenario in which the beam recovery method and the beam failure detection method according to the embodiments of the present application are applicable. As shown in fig. 1, the terminal device resides in a cell of the base station 1, i.e. the cell of the base station 1 is a serving cell of the terminal device. The terminal device also accesses a neighbor cell, i.e. a cell of the base station 2. Optionally, the terminal device communicates with the neighbor cell through an uplink beam and/or communicates with the neighbor cell through a downlink beam.

In the scenario shown in fig. 1, the terminal device may implement beam failure detection and beam recovery of a neighbor cell when beam failure occurs in the neighbor cell through the technical solution of the present application. For example, when the uplink beam of the neighbor cell fails, the terminal device can detect the beam failure of the uplink beam through the technical scheme of the application, and can recover the beam of the uplink beam of the neighbor cell through the technical scheme of the application. For example, when the downlink beam of the neighbor cell fails, the terminal device may implement beam failure detection on the downlink beam through the technical scheme of the present application, and implement beam recovery on the downlink beam of the neighbor cell through the technical scheme of the present application.

Fig. 2 is a schematic diagram of another scenario to which the beam recovery method and the beam failure detection method according to the embodiments of the present application are applicable. As shown in fig. 2, the terminal device resides in the cell of the base station 1, i.e. the cell of the base station 1 is the serving cell of the terminal device. The terminal device also accesses a neighbor cell, i.e. a cell of the base station 2.

In a possible implementation manner, the terminal device may perform communication transmission with the serving cell through an uplink beam of the serving cell, and perform communication transmission with the neighbor cell through a downlink beam of the neighbor cell. The terminal equipment can realize the beam failure detection and the beam recovery of the downlink beam of the neighbor cell when the downlink beam of the neighbor cell fails.

In another possible implementation manner, the terminal device may communicate with the serving cell through a downlink beam of the serving cell and communicate with the neighbor cell through an uplink beam of the neighbor cell. The terminal equipment can realize beam failure detection and beam recovery of the uplink beam of the neighbor cell when the uplink beam of the neighbor cell fails.

It should be noted that the scenario shown in fig. 1 and 2 is merely an example. In practical application, the base station corresponding to the serving cell and the base station corresponding to the neighbor cell may be the same base station or different base stations, which is not limited in the present application.

In order to facilitate understanding of the technical solutions of the present application, some technical terms related to the present application are described below.

1. Beam (beam): a beam is a communication resource. The beam may be a wide beam, or a narrow beam, or other type of beam, and the technique of forming the beam may be a beam forming technique or other means of technique. The beamforming technique may be embodied as a digital beamforming technique, an analog beamforming technique, and a hybrid digital/analog beamforming technique. Different beams may be considered different resources.

The beams may be referred to in the NR protocol as spatial filters (spatial domain filter), spatial filters (spatial filters), spatial parameters (spatial domain parameter), spatial parameters (spatial parameter), spatial settings (spatial domain setting), spatial settings (spatial setting), quasi co-location (QCL) information, QCL hypotheses, or QCL indications, among others. The beam may be indicated by a TCI-state parameter or by a spatial relationship (spatial relationship) parameter. Thus, in this application, beams may be replaced by spatial filters, spatial parameters, spatial settings, QCL information, QCL hypotheses, QCL indications, TCI-states (including uplink TCI-states, downlink TCI-states), spatial relationships, or the like. The terms are also equivalent to each other. The beam may also be replaced with other terms that represent beams and are not limited herein.

The beam used to transmit the signal may be referred to as a transmit beam (transmission beam, tx beam), spatial transmit filter (spatial domain transmission filter), spatial transmit filter (spatial transmission filter), spatial transmit parameter (spatial domain transmission parameter), spatial transmit parameter (spatial transmission parameter), spatial transmit setting (spatial domain transmission setting), or spatial transmit setting (spatial transmission setting). The downlink transmit beam may be indicated by a TCI-state.

The beam used to receive the signal may be referred to as a receive beam (Rx beam), a spatial receive filter (spatial domain reception filter), a spatial receive filter (spatial reception filter), spatial receive parameters (spatial domain reception parameter) or spatial receive parameters (spatial reception parameter), spatial receive settings (spatial domain reception setting), or spatial receive settings (spatial reception setting). The uplink transmission beam may be indicated by any one of spatial relationship, uplink TCI-state, sounding reference signal (sounding reference signal, SRS) resource (indicating a transmission beam using the SRS). Thus, the uplink beam may also be replaced with SRS resources.

The transmit beam may refer to a distribution of signal strengths formed in spatially different directions after signals are transmitted through the antennas, and the receive beam may refer to a distribution of signal strengths of wireless signals received from the antennas in spatially different directions.

Furthermore, the beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beamforming technique or other technique. The beamforming technique may specifically be a digital beamforming technique, an analog beamforming technique, a hybrid digital beamforming technique, or a hybrid analog beamforming technique, etc.

The beam generally corresponds to a resource, for example, when the network device measures the beam, the network device measures different beams through different resources, the terminal device feeds back the measured quality of the resource, and the network device knows the quality of the corresponding beam. When data is transmitted, beam information is also indicated by its corresponding resource. For example, the network device indicates information of a physical downlink shared channel (physical downlink shared channel, PDSCH) beam of the terminal device through a TCI field in downlink control information (downlink control information, DCI).

In one manner of possible implementation, multiple beams with the same or similar communication characteristics are considered to be one beam. One or more antenna ports may be included in a beam for transmitting data channels, control channels, and sounding signals, etc. One or more antenna ports forming a beam may also be considered as a set of antenna ports.

2、TCI-state

The TCI-state is used to indicate the downlink beam. The network device may generate different beams pointing in different directions of transmission. In downlink data transmission, when a network device transmits data to a terminal device using one specific beam, the terminal device needs to be informed of information of a transmission beam used by the terminal device, and thus, the terminal device can receive the data transmitted by the network device using a reception beam corresponding to the transmission beam. In the third generation partnership project release15 (3rd generation partnership project release15,3GPP R15) protocol or the 3gpp r16 protocol, the network device indicates to the terminal device, via the TCI field in the DCI, information about the transmit beam it uses. Specifically, the TCI field size is 3 bits, and may specifically represent 8 different field values (code points). Each value of the TCI field corresponds to an index of TCI-states, which can uniquely identify a TCI-state. One TCI-state comprises several parameters from which the information about the transmit beam can be determined. The TCI-state is configured to each terminal device by the network device, and the structure of the TCI-state is as follows:

Each TCI-State includes an own index TCI-State Id, and two quasi co-ordinates information (QCII-co-location information, QCL-Info). Each QCL-Info includes a cell (cell) field and BWP-Id, which indicates which bandwidth part (BWP) of which cell the TCI-state is applied to, i.e., different cells or different BWP of the same cell may configure different QCL-Info. The QCL-Info also includes a reference signal (reference signal) for indicating with which reference signal resource a quasi co-ordination is made. In the 3gpp r15 protocol or 3gpp r16 protocol, the beams are generally replaced by other terms. For example, in both data transmission and channel measurement, beams correspond to reference signal resources, one for each reference signal resource. Accordingly, the reference signal resource and the QCL relation are shown here, and the essential meaning is that the QCL relation is formed by which beam. The QCL relationship means that two reference signal resources (or two antenna ports, antenna port and reference signal resource are also in one-to-one correspondence) have some identical spatial parameters, and that the specific spatial parameters are identical depends on the Type of the QCL-Info, i.e. another field QCL-Type of the QCL-Info. qcl-Type can have four values { typeA, typeB, typeC, typeD }. Taking typeD as an example, typeD indicates that two reference signal resources have the same spatial reception parameter information, i.e., two beams have the same reception beam. At most only one of the two QCL-Info's included in the TCI-state is TypeD.

In the following, it is explained in detail with an example how the network device indicates the reception beam information of the data transmission beam to one terminal device via the TCI-state based on the 3gpp r15 protocol or the 3gpp r16 protocol, including the configuration, activation and indication of the TCI-state.

TCI-state configuration: the network device configures a plurality of TCI-states to the terminal device through RRC signaling. These TCI-states each include a QCL-Info of type typeD. The network device may also configure TCI-states that do not include QCL-info of type typeD, although these TCI-states are not indications for the data transmission beam and are not further described herein.

TCI-state activation: after the network device configures multiple TCI-states, 8 of them also need to be activated by MAC-CE. These 8 TCI-states are in one-to-one correspondence with 8 values of the TCI field in the DCI. That is, which 8 TCI-states the 8 values of the TCI field of the DCI correspond to is determined by the MAC CE.

Fig. 3 is a schematic diagram of a structure of a MAC CE for activating TCI states according to an embodiment of the present application. As shown in fig. 3, the fields T0 to T (N-2) x 8+07 correspond to the TCI-states of the indexes of the first step configuration respectively from 0 to (N-2) x 8+7, and each field has a size of 1 bit, and the value may be 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. Each MAC CE may theoretically have 8 active fields with a value of 1, with the remainder all being 0. The 8 TCI-states corresponding to the 1-valued fields are 8 TCI-states corresponding to 8 values of the TCI field in the DCI. For example, the minimum value (000) of the TCI field corresponds to the lowest indexed TCI-state activated in the MAC CE, and so on, one-to-one. There are many types of MAC CEs, and there are many other uses of MAC CEs other than those for TCI-state activation. The present application relates only to MAC CEs for TCI-state or TCI-state combination activation. Therefore, unless otherwise specified, the MAC CEs described herein refer to such MAC CEs.

TCI-state indicates: the network device indicates a specific TCI-state through the TCI field in the DCI. For example, the value of the TCI field in the DCI transmitted by the network device to the terminal device is 000, which indicates the TCI-state corresponding to 000 employed for the data transmission beam. The reference signal included in the QCL-Info of type typeD in the TCI-state is CSI-RS with index #1, which indicates that the beam used for data transmission is the same as the received beam corresponding to CSI-RS with index # 1. The reception beam corresponding to CSI-RS with index #1 may be determined through a beam measurement procedure, which is known to the terminal device. Therefore, by the specific value of the TCI field, the terminal device can determine the receiving beam corresponding to the data transmission beam, so as to receive the data by adopting the corresponding receiving beam. It should be noted that, the two descriptions of the TCI-state and the TCI state may be replaced with each other.

3. spatial correlation (for indicating uplink beam)

In the current communication protocol, the transmit beam of the uplink is indicated by a spatial correlation, which functions similarly to TCI-state to tell the terminal device what transmit beam to use for the uplink.

The Spatial relation also needs to be configured first by RRC. The configuration structure is as follows:

The method comprises the steps of identifying a spatial relation, identifying a cell, target reference signal resources, path loss measurement reference signals, power control parameters and the like. Wherein, the target reference signal resource (may be any one of SRS, SSB, and CSI-RS) is used to indicate the corresponding uplink beam. If the uplink transmission adopts the spatial relation #1, and the spatial relation #1 includes a target reference signal resource #2, the sending beam adopting the uplink transmission is the sending beam or the receiving beam of the target reference signal. For example, when the target reference signal resource is an uplink resource SRS, it means that the transmission beam used for uplink transmission is the transmission beam of the SRS (the transmission beam of the SRS is known). For another example, the target reference signal resource is a downlink resource such as SSB or CSI-RS, and indicates that the transmission beam used for uplink transmission is the reception beam of the SSB or the reception beam of CSI-RS (the reception beam of the SSB or the reception beam of CSI-RS is known).

The network device may configure a plurality of spatial references for the terminal device. One of them is then activated for the corresponding data transmission by the MAC CE. The uplink transmission includes a physical uplink control channel (physical uplink control channel, PUCCH), SRS, a physical uplink shared channel (physical uplink shared channel, PUSCH), and the like, and a corresponding spatial correlation is required. The spatial relation of the PUCCH is indicated by MAC CE signaling. The spatial relation of SRS is also indicated by MAC CE signaling. And a specific SRS is associated during the transmission of the PUSCH, and the transmission is carried out by adopting the spatial relation of the SRS.

4. QCL: the co-ordination relationship is used to indicate that the plurality of resources have one or more identical or similar communication characteristics therebetween, and the same or similar communication configuration may be employed for the plurality of resources having the co-ordination relationship. For example, if two antenna ports have a co-located relationship, the channel large-scale characteristics of one port transmitting one symbol can be inferred from the channel large-scale characteristics of the other port transmitting one symbol. The large scale characteristics may include: delay spread, average delay, doppler spread, doppler shift, average gain, reception parameters, terminal device reception beam number, transmit/receive channel correlation, reception angle of Arrival, spatial correlation of receiver antennas, angle of main Arrival (AoA), average angle of Arrival, extension of AoA, etc. For example, the parity indication for indicating whether at least two groups of antenna ports have a parity relationship comprises: the parity indication indicates whether channel state information reference signals transmitted by at least two groups of antenna ports are from the same transmission point or whether channel state information reference signals transmitted by at least two groups of antenna ports are from the same beam group. For example, having a QCL relationship between two resources represents that the beams corresponding to the two resources are the same beam. Having a QCL relationship between two resources may include two resources having the same QCL type.

5. Service beam of terminal equipment: refers to the beam currently used by the terminal device.

6. Serving cell of terminal equipment: refers to the cell in which the terminal device resides. The terminal device may communicate with the serving cell via a beam of the serving cell.

7. Neighbor cells of terminal equipment: refers to a cell in which the PCI is different from the PCI of the serving cell of the terminal device. The terminal device may communicate with the neighbor cell via the beam of the neighbor cell.

Currently, in the 3gpp r15 protocol, the network device may configure a beam failure detection resource set q0 for the terminal device in the serving cell of the terminal device, where the beam failure detection resource set q0 includes periodic CSI-RS resources. The terminal device communicates with the network device via the beam of the serving cell. When the beam of the serving cell fails, the terminal device may perform beam failure detection by using the resources in the beam failure detection resource set q 0. If the network device does not configure the set q0 of beam failure detection resources for the terminal device, the terminal device may find, in the TCI status information, a reference signal resource (e.g., a periodic CSI-RS resource or SSB resource) having a QCL relationship with a resource corresponding to a PDCCH carried on a beam of the serving cell as the beam failure detection resource. Then, the terminal device performs beam failure detection of the serving cell through the beam failure detection resource.

The network device may also configure a serving cell of the terminal device with PRACH resources dedicated for beam recovery, each PRACH resource associated with a candidate beam of the serving cell, different PRACH resources associated with different candidate beams of the serving cell. When the beam of the service cell fails, the terminal equipment can initiate beam recovery of the service cell through the PRACH resource.

In the scenario shown in fig. 1 or fig. 2, the terminal device may communicate with the network device through the beam of the serving cell, or through the beam of the neighbor cell. But currently, the terminal equipment is not supported to configure the reference signal resource of the neighbor cell as the beam failure detection reference signal resource, and the terminal equipment cannot be configured with the PRACH resource for beam recovery of the neighbor cell. When the beam failure of the neighbor cell occurs, the terminal equipment cannot perform the beam failure detection and the beam recovery of the neighbor cell.

In view of this, the present application provides a beam recovery scheme for a neighbor cell, and refer to the related description of the embodiment shown in fig. 4 hereinafter for details. The present application also provides a beam failure detection scheme for a neighbor cell, and refer to the related description of the embodiments shown in fig. 5 and 6 hereinafter for details. Hereinafter, the network device may refer to a network device corresponding to a serving cell of the terminal device, or may refer to a network device corresponding to a neighbor cell. For example, the network device is a base station of a serving cell or a base station corresponding to a neighbor cell. Hereinafter, the terminal device sending a signal to the serving cell means that the terminal device sends a signal to a network device corresponding to the serving cell (for example, a base station corresponding to the serving cell), and the terminal device sending a signal to the neighbor cell means that the terminal device sends a signal to a network device corresponding to the neighbor cell (for example, a base station corresponding to the neighbor cell). The terminal device receiving the signal of the service cell means that the terminal device receives the signal sent by the network device corresponding to the service cell. The terminal equipment receiving the signal sent by the neighbor cell means that the terminal equipment receives the signal sent by the network equipment corresponding to the neighbor cell. Hereinafter, the PRACH resource may also be simply referred to as a random access resource.

The following describes the technical scheme of the present application in connection with specific embodiments.

Fig. 4 is a schematic diagram of an embodiment of a beam recovery method according to an embodiment of the present application. Referring to fig. 4, the beam recovery method includes:

401. the terminal device determines a target PRACH resource associated with the target reference signal resource from the at least one PRACH resource.

The target reference signal resource is a reference signal resource corresponding to a target candidate beam of a neighbor cell of the terminal device, and the target candidate beam is used for the terminal device to initiate beam recovery. Optionally, the target reference signal resource comprises a CSI-RS resource or an SSB resource.

Specifically, the terminal device determines a target reference signal resource. The terminal device then selects a target PRACH resource associated with the target reference signal resource from the at least one PRACH resource. It should be noted that, if the network device configures a PRACH resource for the terminal device, the terminal device may directly use the PRACH resource as the target PRACH resource. If the network device configures a plurality of PRACH resources for the terminal device, the terminal device determines a target reference signal resource and selects a target PRACH resource associated with the target reference signal resource from the plurality of PRACH resources.

One specific implementation of the terminal device determining the target reference signal resource is described below in connection with 401a to 401 b.

Optionally, the embodiment shown in fig. 4 further comprises 401a to 401b,401a to 401b may be performed before 401.

401a, the terminal device measures the reference signal resource in the first resource set, and obtains a measurement result.

The first set of resources includes one or more reference signal resources of the neighbor cell, each reference signal resource corresponding to one candidate beam of the neighbor cell.

For example, the network device configures a set of candidate beam detection reference signals (candidate beam detection reference signal, CBD RS) of neighbor cells for the terminal device. The CBD RS set includes one or more reference signal resources. For example, SSB resources or CSI-RS resources. The CBD RS set is associated with the PCI of the neighbor cell, and the terminal equipment measures the reference signal resource in the CBD RS set of the neighbor cell to obtain a measurement result. For example, the measurement result includes the signal quality of the beam corresponding to each reference signal resource in the CBD RS set of the neighbor cell. For example, the reference signal received power (reference signal received power, RSRP) or reference signal received quality (reference signal received quality, RSRQ) of the beam.

Optionally, the reference signal resources of the neighbor cell include: SSB resources of the neighbor cell and/or CSI-RS resources of the neighbor cell.

401b, the terminal device determines a target reference signal resource from one or more reference signal resources of the neighbor cell according to the measurement result.

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

It should be noted that, alternatively, the first threshold may be set according to factors such as a channel state, an expected rate of the terminal device to the network, and the like. For example, the magnitude of the first threshold value may be between-80 dBm (decibel milliwatts) and-90 dBm.

For example, the measurement result includes the signal quality of the SSB0 resource, the signal quality of the SSB1 resource, the signal quality of the CSI-RS0 resource, and the signal quality of the CSI-RS1 resource. The terminal equipment selects an SSB0 resource which is larger than or equal to a first threshold value from the measurement result as the target reference signal resource.

Alternatively, the network device may configure the first set of resources for the terminal device. The embodiment shown in fig. 4 also includes 401c,401c may be performed before 401 a.

401c, the network device sends the first configuration information to the terminal device. The first configuration information is used to configure the first set of resources for the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device.

Optionally, the first configuration information is carried in RRC signaling. For example, the network device configures the CBD RS set of the neighbor cell for the terminal device through RRC signaling.

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

Some possible implementations of the at least one PRACH resource are described below.

Implementation 1, the at least one PRACH resource includes at least one CFRA resource of a neighbor cell dedicated to beam recovery.

Each CFRA resource of the at least one CFRA resource of the neighbor cell is associated with one reference signal resource of the neighbor cell, and different CFRA resources are associated with different reference signal resources of the neighbor cell. One candidate beam of the neighbor cell corresponding to each reference signal resource of the neighbor cell.

Implementation 1 is described below in connection with the example shown in table 1. As shown in table 1, each CFRA resource of a neighbor cell is associated with one reference signal resource of the neighbor cell. Each CFRA resource of a neighbor cell is associated with the PCI of the neighbor cell for indicating that the CFRA resource is a random access resource of the neighbor cell. Where pci=y represents the neighbor cell, i.e., the PCI of the neighbor cell is Y.

TABLE 1

CFRA resource	Reference signal resource of neighbor cell
		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)

For example, if the target reference signal resource is an SSB0 resource of a neighbor cell, the terminal device may determine that the SSB0 resource is associated with a CFRA0 resource of the neighbor cell through table 1 above. I.e. the target PRACH resource is the CFRA0 resource of the neighbor cell. That is, if the network device configures CFRA resources for beam restoration for the neighbor cell, the terminal device preferentially uses the CFRA resources for beam restoration of the neighbor cell.

It should be noted that, at least one CFRA resource dedicated for beam restoration of the neighbor cell and the CFRA resource dedicated for beam restoration of the serving cell of the terminal device may be configured in the same set, or may be configured in different sets. If the two are configured in the same set, each CFRA resource of the terminal equipment is associated with the PCI of the corresponding cell; alternatively, each CFRA resource of a neighbor cell is associated with a PCI of the neighbor cell, while each CFRA resource of a serving cell is not associated with a PCI; alternatively, each CFRA resource of a serving cell is associated with a PCI of the serving cell, while each CFRA resource of a neighbor cell is not associated with a PCI. If the two are configured in different sets, each set associates the PCI of the corresponding cell; or, the set of neighbor cells is associated with the PCI of the neighbor cells, and the set of serving cells is not associated with the PCI; alternatively, the set of serving cells is associated with the PCI of the serving cell and the set of neighbor cells is not associated with the PCI.

Optionally, each CFRA resource of the at least one CFRA resource of the neighbor cell is further associated with one 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 one candidate beam of the serving cell.

In this implementation, it can be appreciated that the network device configures at least one CFRA resource dedicated for beam restoration for the neighbor cell of the terminal device, and does not configure CFRA resources dedicated for beam restoration for the serving cell. Each of the at least one CFRA resource of the neighbor cell may be associated with a reference signal resource of the serving cell for beam recovery of the serving cell.

Implementation 2, the at least one PRACH resource comprises at least one CBRA resource of a neighbor cell.

Each CBRA resource of the at least one CBRA resource of the neighbor cell is associated with one reference signal resource of the neighbor cell, and a different CBRA resource is associated with a different reference signal resource of the neighbor cell. The reference signal resource of each neighbor cell corresponds to one candidate beam of the neighbor cell.

Implementation 2 is described below in conjunction with table 2. As shown in table 2, each CBRA resource of a neighbor cell is associated with one reference signal resource of the neighbor cell. Each CBRA resource of a neighbor cell is associated with the PCI of the neighbor cell for indicating that the CBRA resource is a random access resource of the neighbor cell. Where pci=y represents the neighbor cell, i.e., the PCI of the neighbor cell is Y.

TABLE 2

CBRA resource	Reference signal resource of neighbor cell
		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)

For example, if the target reference signal resource is a CSI-RS0 resource of the neighbor cell, the terminal device may determine, through table 2 above, that the CSI-RS0 resource is associated with a CBRA2 resource of the neighbor cell. I.e. the target PRACH resource is the CBRA2 resource of the neighbor cell. That is, if the network device does not configure CFRA resources for beam restoration for the neighbor cell, the terminal device may perform beam restoration for the neighbor cell based on CBRA resources configured by the network device for the neighbor cell.

It should be noted that, at least one CBRA resource of the neighbor cell and at least one CBRA resource of the serving cell of the terminal device may be configured in the same set, or may be configured in different sets respectively. If the two are configured in the same set, each CBRA resource of the terminal equipment is associated with the PCI of the corresponding cell; or, each CBRA resource of the neighbor cell is associated with the PCI of the neighbor cell, and the CBRA resource of the serving cell is not associated with the PCI; alternatively, each CBRA resource of the serving cell is associated with the PCI of the serving cell and each CBRA resource of the neighbor cell is not associated with the PCI. If the two are configured in different sets, each set associates the PCI of the corresponding cell; or, the set of neighbor cells is associated with the PCI of the neighbor cells, and the set of serving cells is not associated with the PCI; alternatively, the set of serving cells is associated with the PCI of the serving cell and the set of neighbor cells is not associated with the PCI.

In implementation 2, each CRBA resource in at least one CBRA resource of the neighbor cell is associated with one reference signal resource of the neighbor cell. Each reference signal resource is associated with one candidate beam of a neighbor cell. The at least one CBRA resource shown in the above-described implementation 2 is a CBRA resource of a neighbor cell that can be used for both beam recovery and random access of the neighbor cell. In practical applications, the neighbor cell also includes other CBRA resources, which are used for random access of the neighbor cell and are not used for beam recovery.

Implementation 3, the at least one PRACH resource includes at least one CFRA resource dedicated to beam recovery of a serving cell of the terminal device.

Each CFRA resource of the at least one CFRA resource of the serving cell is associated with one reference signal resource of a neighbor cell, and different CFRA resources are associated with different reference signal resources of the neighbor cell. The reference signal of each neighbor cell corresponds to one candidate beam of the neighbor cell.

Implementation 3 is described below in conjunction with table 3. As shown in table 3, each CFRA resource of the serving cell is associated with one reference signal resource of the neighbor cell. Each CFRA resource of a serving cell is associated with the PCI of the serving cell for indicating that the CFRA resource is a random access resource of the serving cell. Where pci=x represents the PCI of the neighbor cell, i.e., the serving cell, is X. Pci=y represents the neighbor cell, i.e., the PCI of the neighbor cell is Y.

TABLE 3 Table 3

CFRA resource	Reference signal resource of neighbor cell
		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)

For example, if the target reference signal resource is a CSI-RS1 resource of a neighbor cell, the terminal device may determine, through table 3 above, that the CSI-RS1 resource is associated with a CFRA3 resource of a serving cell. I.e. the target PRACH resource is the CFRA3 resource of the serving cell. That is, if the network device does not configure CFRA resources for beam restoration for the neighbor cell, the terminal device may perform beam restoration for the neighbor cell based on the CFRA resources of the serving cell associated with the reference signal resources of the neighbor cell.

Based on the above implementation 3, optionally, each CFRA resource of the serving cell is further associated with one 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 one candidate beam of the serving cell.

In this implementation, the network device configures at least one CFRA resource dedicated to beam restoration for the serving cell of the terminal device. Without configuring the serving cell with CFRA resources dedicated to beam recovery. Each CFRA resource of the serving cell is associated with both one reference signal resource of the neighbor cell and one reference signal resource of the serving cell for beam recovery of the neighbor cell. For example, as shown in table 4:

TABLE 4 Table 4

The network device may configure the terminal device with two sets of candidate beam detection reference signals (candidate beam detection reference signal, CDB RS), one set of CDR RS for the serving cell and one set of CDR RS for the neighbor cell. The CDR RS set of the serving cell includes one or more reference signal resources of the serving cell. The CDR RS set of the neighbor cell includes one or more reference signal resources of the neighbor cell.

Optionally, the at least one CFRA resource in the above implementation 3 may also replace at least one CBRA resource of the serving cell. Each of the at least one CBRA resource is associated with one reference signal resource of a neighbor cell, and a different reference signal resource is associated with one candidate beam of the neighbor cell.

Optionally, before 401, if the service beam of the terminal device fails, and the reference signal resource corresponding to the service beam is a reference signal resource of a neighbor cell, the process of 401 is performed. That is, the terminal device may measure the reference signal resources in the CDB RS set of the neighbor cell to obtain a measurement result, determine a target reference signal resource from the measurement result, and then select a target PRACH resource associated with the target reference signal resource from the PRACH resources.

The reference signal resource corresponding to the service beam is a reference signal resource of a neighbor cell, which can be alternatively described as: the reference signal resource included in the QCL information corresponding to the service beam is a reference signal resource of a neighbor cell; alternatively, the serving beam of the terminal device is a beam of the neighbor cell. The description of the beam and QCL information may be referred to by the description of the related terms.

It should be noted that, if the service beam of the terminal device fails and the reference signal resource corresponding to the service beam is the reference signal resource of the serving cell, the terminal device measures the reference signal resource in the CDR RS set of the serving cell and selects a reference signal resource greater than the first threshold value from the reference signal resources. The terminal equipment determines CFRA resources corresponding to the reference signal resources larger than the first threshold value based on the table 4, and initiates beam recovery of the serving cell based on the CFRA resources. The reference signal resource corresponding to the service beam is a reference signal resource of a serving cell, which can be alternatively described as: the reference signal resource included in the QCL information corresponding to the service beam is a reference signal resource of a serving cell; alternatively, the serving beam is a beam of the serving cell.

As can be seen from the above description about at least one PRACH resource of the terminal device, the at least one PRACH resource may be configured in multiple manners, and the terminal device may initiate beam recovery of the neighbor cell based on different PRACH resource configurations. The robustness of the terminal equipment for beam recovery of the neighbor cells is improved.

It should be noted that, if at least one CFRA resource dedicated for beam restoration of the serving cell is associated with only the reference signal resource of the serving cell and not the reference signal resource of the neighbor cell, the terminal device can initiate beam restoration of the serving cell only based on the CFRA resource of the serving cell, and cannot initiate beam restoration of the neighbor cell.

It should be noted that if the network device does not configure CFRA resources dedicated to beam recovery for the serving cell, the network device configures other PRACH resources for the serving cell, for example CBRA resources of the serving cell. The terminal device may initiate beam recovery of the serving cell based on other PRACH resources of the serving cell, and may not initiate beam recovery of the neighbor cell.

Optionally, the embodiment shown in fig. 4 also includes 401d,401d may be performed before 401.

401d, the network device sends the second configuration information to the terminal device. The second configuration information is used for configuring PRACH resources for the terminal equipment.

For example, the network device may send the second configuration information to the terminal device through RRC signaling.

Note that, there is no fixed execution sequence between 401c and 401d, and 401c may be executed first, and then 401d may be executed; alternatively, 401d is performed first, followed by 401c; alternatively, 401c and 401d may be performed simultaneously, as the case may be, and the present application is not limited.

It should be noted that 401c and 401d are implementation manners in which the network device configures the PRACH resource and the first resource set for the terminal device through two different configuration information. In practical application, the network device may also configure PRACH resources and the first resource set for the terminal device through the same configuration information, which is not limited in the present application.

402. The terminal equipment initiates beam recovery of the neighbor cell based on the target PRACH resource.

Specifically, the terminal device may send a pilot signal to the neighbor cell at the target PRACH resource to request access to a beam corresponding to the reference signal resource associated with the PRACH resource.

In the embodiment of the present application, the terminal device determines, from the at least one PRACH resource, a target PRACH resource associated with a target reference signal resource, where the target PRACH resource is a reference signal resource corresponding to a target candidate beam of a neighbor cell of the terminal device. The terminal device then initiates beam recovery of the neighbor cell based on the target PRACH resource. From this, it can be seen that the terminal device may determine a target PRACH resource associated with the target reference signal resource from the at least one PRACH resource, and initiate beam recovery of the neighbor cell based on the target PRACH resource. Therefore, the terminal equipment initiates the beam recovery of the neighbor cell, so that the beam recovery of the terminal equipment to the neighbor cell is supported, and the communication performance is improved.

It should be noted that, before the embodiment shown in fig. 4, when the beam failure occurs in the beam of the neighbor cell, the terminal device may first detect the beam failure of the neighbor cell. When the beam failure detection determines that the beam of the neighbor cell is not available (e.g., the signal quality of the beam is poor), the terminal device may perform the scheme of the embodiment shown in fig. 4 described above to enable the terminal device to initiate beam recovery of the neighbor cell. The terminal device may implement beam failure detection for the neighbor cell through the scheme of the embodiment shown in fig. 5 or fig. 6, and refer to the related description of the embodiment shown in fig. 5 or fig. 6, which is not repeated herein.

Optionally, the relationship between the terminal device and the serving cell and the neighbor cell includes the following three possible implementations.

In implementation mode 1, a terminal device performs uplink communication with a serving cell through an uplink beam of the serving cell, and performs communication with a neighbor cell through a downlink beam of the neighbor cell.

In this implementation, the serving beam of the terminal device is the downlink beam of the neighbor cell. The downlink beam of the neighbor cell fails, and the terminal device may initiate beam recovery to the neighbor cell through the procedure of the embodiment shown in fig. 4. Namely, the terminal equipment requests the neighbor cell to access the downlink wave beam corresponding to the reference signal resource of the neighbor cell associated with the target PRACH resource.

It should be noted that, based on the case of implementation 1, the terminal device may also initiate beam recovery of the neighbor cell by: after the terminal equipment determines the target reference signal resource, the terminal equipment can send the identification of the target reference signal resource to the service cell through the uplink beam of the service cell, and then the service cell sends the identification of the target reference signal resource to the neighbor cell, so that the beam recovery of the neighbor cell by the terminal equipment is realized.

In implementation 2, the terminal device performs downlink communication with the serving cell through a downlink beam of the serving cell, and performs uplink communication with the neighbor cell through an uplink beam of the neighbor cell.

In this implementation, the serving beam of the terminal device is the uplink beam of the neighbor cell. The uplink beam of the neighbor cell fails, and the terminal device may initiate beam recovery to the neighbor cell through the procedure of the embodiment shown in fig. 4. That is, the terminal device requests the neighbor cell to access the uplink beam corresponding to the reference signal resource of the neighbor cell associated with the target PRACH resource.

In this implementation 2, if the downlink beam of the serving cell fails, the terminal device may measure the CDB RS set of the serving cell and determine a reference signal resource greater than or equal to the first threshold. Then, the terminal device may send, to the neighbor cell, the identity of the reference signal resource greater than or equal to the first threshold value through an uplink beam of the neighbor cell. And the neighbor cell sends the identifier of the reference signal resource which is larger than or equal to the first threshold value to the service cell so as to realize that the terminal equipment initiates the beam recovery of the service cell.

In implementation 3, the terminal device performs uplink communication with the neighbor cell through an uplink beam of the neighbor cell, and performs downlink communication with the neighbor cell through a downlink beam of the neighbor cell.

In this implementation, the service beam of the terminal device is an uplink beam of the neighbor cell or a downlink beam of the neighbor cell. For example, the uplink beam of the neighbor cell fails, and the terminal device may initiate beam recovery to the neighbor cell through the procedure of the embodiment shown in fig. 4. That is, the terminal device requests the neighbor cell to access the uplink beam corresponding to the reference signal resource of the neighbor cell associated with the target PRACH resource. For example, the downlink beam of the neighbor cell fails, and the terminal device may initiate beam recovery to the neighbor cell through the procedure of the embodiment shown in fig. 4. Namely, the terminal equipment requests the neighbor cell to access the downlink wave beam corresponding to the reference signal resource of the neighbor cell associated with the target PRACH resource.

Two possible schemes for the terminal device to perform beam failure detection of the neighbor cell are described below in connection with the embodiments shown in fig. 5 and 6.

Fig. 5 is a schematic diagram of an embodiment of a beam failure detection method according to an embodiment of the present application. Referring to fig. 5, the beam failure detection method includes:

501. The terminal device determines a first set of resources.

The first set of resources includes at least one first reference signal resource for beam failure detection of a neighbor cell of the terminal device. The first set of resources may also be referred to as a first set of beam failure detection reference signals (beam failure detection reference signal, BFD RS), and the name of the set is not limited in this application. The first reference signal resource may also be referred to as a BFD RS resource of the neighbor cell.

The at least one first reference signal resource comprises SSB resources and/or CSI-RS resources of the neighbor cell.

Two possible implementations of the first set of resources are presented below.

Implementation 1, the first set of resources includes at least one first reference signal resource.

One possible implementation of this first set of resources is described below in connection with table 5. Where pci=y represents a neighbor cell. I.e. the PCI of the neighbor cell is equal to Y.

TABLE 5

The BFD RS set of the neighbor cell is associated with the PCI of the neighbor cell, the BFD RS set including BFD RS resources of the neighbor cell. For example, the BFD RS resources of the neighbor cell include SSB resources or CSI-RS resources of the neighbor cell. Each BFD RS resource corresponds to one candidate beam of the neighbor cell. Reference may be made to the description of the related terms as to the relationship of beams to resources.

Implementation 2, the first set of resources includes the 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 a serving cell of the terminal device.

In this implementation, the first set of resources includes both BFD RS resources of the neighbor cell and BFD RS resources of the serving cell. Two possible forms of the first set of resources under this implementation are presented below.

1. The first set of resources includes the 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 neighbor cell; and/or, each third reference signal resource is associated with a PCI of the serving cell.

For example, the first resource set is BFD RS set 0 as shown in table 6, pci=x represents the serving cell, and pci=y represents the neighbor cell. Each BFD RS resource in BFD RS set 0 is associated with a PCI of the corresponding cell.

TABLE 6

For example, the first set of resources is BFD RS set 0 as shown in table 7, and 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 resource of the neighbor cell does not need to display and configure the corresponding PCI, and the reference signal resource without the corresponding PCI in the table 7 is the reference signal resource of the neighbor cell.

TABLE 7

For example, the first set of resources is BFD RS set 0 as shown in table 8, and pci=y represents a neighbor cell. Each reference signal resource of a neighbor cell in BFD RS set 0 is associated with a PCI of the neighbor cell. The reference signal resource of the serving cell does not need to display and configure the corresponding PCI, and the reference signal resource without the corresponding PCI in table 8 is the reference signal resource of the serving cell.

TABLE 8

2. The first set of resources 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 third reference signal resource.

Optionally, the first subset is associated with the PCI of the neighbor cell and/or the second subset is associated with the PCI of the serving cell.

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 a serving cell, and pci=y represents a neighbor cell.

TABLE 9

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 set of resources including at least one third reference signal resource. That is, the BFD RS resources of the neighbor 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 neighbor cell; and/or, the second set of resources is associated with the PCI of the serving cell. The technical solutions of the present application will be described below by taking the above-mentioned implementation 1 and implementation 2 as examples.

Optionally, the embodiment shown in fig. 5 further comprises 501a,501a may be performed prior to 501.

501a, the network device sends first configuration information to the terminal device. The first configuration information is used to configure the first set of resources. Correspondingly, the terminal device receives the first configuration information from the network device.

For example, the network device sends the first configuration information to the terminal device through RRC signaling, for configuring the first set of resources for the terminal device.

502. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell, the terminal equipment adopts the first reference signal resource included in the first resource set to perform beam failure detection on the service beam.

For example, if the reference signal resource corresponding to the service beam of the terminal device is a reference signal resource of a neighbor cell, the terminal device may use some or all of the first reference signal resources in the first resource set to perform beam failure detection on the service beam. Specifically, the terminal device may receive the reference signal from the neighbor cell on the part or all of the first reference signal resources, and measure the signal quality of the reference signal. If the signal quality of the reference signal is determined to be less than the preset threshold value through multiple measurements, the terminal device can determine that the service beam is no longer available, and the terminal device can initiate beam recovery to the neighbor cell to request access to a new beam. If the signal quality of the reference signal is determined to be greater than the preset threshold value through multiple measurements, the terminal equipment can determine that the service beam is available, and continue to use the service beam to communicate with the neighbor cell.

The 502 above may alternatively be described as: if the reference signal resource included in the QCL information corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell, the terminal equipment adopts the first reference signal resource included in the first resource set to carry out beam failure detection on the service beam of the terminal equipment; or if the service beam of the terminal equipment is the beam of the neighbor cell, the terminal equipment adopts the first reference signal resource included in the first resource set to perform beam failure detection on the service beam of the terminal equipment.

As can be seen from the above description 502, the terminal device determines that the reference signal resource included in the QCL information corresponding to the service beam is from the neighbor cell. The terminal equipment determines BFD RS resources corresponding to the neighbor cell and carries out beam failure detection based on the BFD RS resources of the neighbor cell.

Based on implementation 1 of the first set of resources described above, the embodiment shown in fig. 5 optionally further comprises 503. 503 may be performed after 501.

503. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam.

The second reference signal resource has a QCL relationship with a resource corresponding to PDCCH DMRS carried on the service beam of the terminal device. It will be appreciated 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 PDCCH DMRS carried on the serving beam.

The first set of resources comprises only at least one first reference signal resource of the neighbor cell. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam of the terminal equipment. For example, the terminal device receives the reference signal transmitted by the serving cell on the second reference signal resource and measures the signal quality of the reference signal. If the signal quality of the reference signal is determined to be less than the preset threshold value through multiple measurements, the terminal device can determine that the service 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 the signal quality of the reference signal is determined to be greater than the preset threshold value through multiple measurements, the terminal equipment can determine that the service beam is available, and continue to use the service beam to communicate with the serving cell.

The above 503 may alternatively be described as: if the service beam of the terminal equipment is the beam of the service cell, the terminal equipment adopts a second reference signal resource to carry out beam failure detection on the service beam of the terminal equipment; or if the reference signal resource included in the QCL information corresponding to the service 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 service beam of the terminal device.

Based on implementation 2 of the first set of resources described above, the embodiment shown in fig. 5 optionally further comprises 504. 504 may be performed after 501.

504. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts the third reference signal resource included in the first resource set to perform beam failure detection on the service beam.

The first set of resources includes at least one first reference signal resource and at least one third reference signal resource. And the terminal equipment adopts part or all of the third reference signal resources in the first resource set to carry out beam failure detection on the service beam.

For example, the terminal device receives the reference signal transmitted by the serving cell on part or all of the third reference signal resources in the first set of resources, and measures the signal quality of the reference signal. If the signal quality of the reference signal is determined to be less than the preset threshold value through multiple measurements, the terminal device can determine that the service 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 the signal quality of the reference signal is determined to be greater than the preset threshold value through multiple measurements, the terminal equipment can determine that the service beam is available, and continue to use the service beam to communicate with the serving cell. That is, in the above-mentioned 504, if the network device configures the terminal device with at least one third reference signal resource for beam failure detection of the serving cell, the terminal device preferentially uses the at least one third reference signal resource for beam failure detection of the serving cell.

The 504 above may alternatively be described as: if the reference signal resource included in the QCL information corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts the third reference signal resource included in the first resource set to carry out beam failure detection on the service beam; or if the service beam of the terminal equipment is the beam of the service cell, the terminal equipment adopts the third reference signal resource included in the first resource set to perform beam failure detection on the service beam.

As can be seen from the above description, in 504, the terminal device determines that the reference signal resource included in the QCL information corresponding to the service beam is from the serving cell. The terminal equipment determines BFD RS resources of the service cell and performs beam failure detection on the service beam based on the BFD RS resources of the service cell.

For example, the serving beam of the terminal device is the downlink beam of the neighbor cell. If the downlink beam of the neighboring cell fails, the terminal device may perform beam failure detection on the downlink beam of the neighboring cell through the procedure of the embodiment shown in fig. 5.

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 may perform beam failure detection on the downlink beam of the serving cell through the procedure of the embodiment shown in fig. 5.

In the embodiment of the application, the terminal equipment determines a first resource set. The first set of resources includes at least one first reference signal resource for beam failure detection of a neighbor cell of the terminal device. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell, the terminal equipment adopts the first reference signal resource included in the first resource set to perform beam failure detection on the service beam. Therefore, the terminal equipment realizes the beam failure detection of the neighbor cells through the technical scheme. The terminal equipment can complete the beam failure detection of the neighbor cell under the condition of not carrying out RRC reconfiguration, thereby improving the communication performance.

Fig. 6 is a schematic diagram of another embodiment of a beam failure detection method according to an embodiment of the present application. Referring to fig. 6, the beam failure detection method includes:

601. and the terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam of the terminal equipment.

The second reference signal resource is a resource having a QCL relationship corresponding to PDCCH DMRS carried on the service beam of the terminal device. It will be appreciated 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 PDCCH DMRS carried on the serving beam. The second reference signal resource is a CSI-RS resource or an SSB resource.

In a possible implementation, the network device does not configure reference signal resources for beam failure detection for the serving cell and neighbor cells of the terminal device. Whether the service beam is the beam of the service cell or the beam of the neighbor cell, if the service beam fails, the terminal equipment adopts the second reference signal resource to detect the beam failure of the service beam of the terminal equipment.

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

Based on this implementation, optionally, 601a is also included in the embodiment shown in fig. 6, 601a may be performed prior to 601.

601a, the network device sends second configuration information to the terminal device. The second configuration information is used to configure the first set of resources. Correspondingly, the terminal device receives the second configuration information from the network device.

For example, the network device sends the second configuration information to the terminal device through RRC signaling.

The first set of resources includes the at least one third set of reference signal resources for beam failure detection of the serving cell. For example, as shown in table 10, the first set of resources is BFD RS set 0, which BFD RS set 0 is associated with the PCI of the serving cell. Pci=x stands for serving cell. BFD RS set 0 includes BFD RS resources of the serving cell.

Table 10

Based on 601a, the above 601 specifically includes: if the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell, the terminal equipment adopts the second reference signal resource to carry out beam failure detection on the service beam of the terminal equipment.

That is to say, if the service beam is a beam of a neighbor cell, the terminal device uses the second reference signal resource to perform beam failure detection on the service beam of the terminal device. Or if the reference signal resource included in the QCL information corresponding to the service beam is the reference signal resource of the neighbor cell, the terminal device uses the second reference signal resource to perform beam failure detection on the service beam of the terminal device.

Based on 601a above, optionally, the embodiment shown in fig. 6 further comprises 602,602 may be performed after 601.

602. If the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the service cell, the terminal equipment adopts the first resource set to carry out beam failure detection on the service beam.

The 602 above may alternatively be described as: if the service beam of the terminal equipment is the beam of the service cell, the terminal equipment adopts the first resource set to carry out beam failure detection on the service beam; or if the reference signal resource included in the QCL information corresponding to the service 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 service beam. That is, in 602 above, if the network device configures the terminal device with at least one third reference signal resource for beam failure detection of the serving cell, the terminal device preferentially uses the at least one third reference signal resource for beam failure detection of the serving cell.

Alternatively, the relationship between the terminal device and the serving cell and the neighbor cells is described in the embodiment shown in fig. 5, and will not be described in detail herein.

In the embodiment of the application, the terminal equipment adopts the second reference signal resource to perform beam failure detection on the service beam of the terminal equipment. The second reference signal resource is a resource having a QCL relationship corresponding to PDCCH DMRS carried on the service beam of the terminal device. Therefore, the terminal equipment realizes the beam failure detection of the neighbor cells through the technical scheme. The terminal equipment can complete the beam failure detection of the neighbor cell under the condition of not carrying out RRC reconfiguration, thereby improving the communication performance.

The embodiments shown in fig. 5 and fig. 6 above illustrate various possible implementations in which the network device configures the beam failure detection resources for the terminal device, and the terminal device performs beam failure detection of the neighbor cell based on the beam failure detection resources configured by the network device. Therefore, the terminal equipment can complete beam failure detection of the neighbor cells under the condition of not carrying out RRC reconfiguration, and the communication performance is improved.

Communication devices provided in embodiments of the present application are described below.

Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application. Referring to fig. 7, a communication apparatus 700 may be used to perform the process performed by the terminal device in the embodiment shown in fig. 4, and specifically refer to the related description in the embodiment shown in fig. 4.

The communication device 700 comprises 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 configured to implement a corresponding communication function, and the transceiver module 702 may also be referred to as a communication interface or a communication module.

Optionally, the communication device 700 may further include a storage module, where the storage module may be used to store instructions and/or data, and the processing module 701 may read the instructions and/or data in the storage module, so that the communication device implements the embodiment shown in fig. 4 described above.

The communication apparatus 700 may be used to perform the actions performed by the terminal device in the embodiment shown in fig. 4 above. The communication device 700 may be a terminal device or a component configurable at a terminal device. The processing module 701 is configured to perform the operations related to the processing on the terminal device side in the embodiment shown in fig. 4 above. Optionally, the transceiver module 702 is configured to perform the operations related to the reception on the terminal device side in the embodiment shown in fig. 4 above.

Alternatively, the transceiver module 702 may include a transmitting module and a receiving module. The transmitting module is configured to perform the transmitting operation in the embodiment shown in fig. 4. The receiving module is configured to perform the receiving operation in the embodiment shown in fig. 4.

It should be noted that, the communication apparatus 700 may include a transmitting module, and not include a receiving module. Alternatively, the communication device 700 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether or not the above scheme executed by the communication apparatus 700 includes a transmission action and a reception action.

The communication device 700 may be used for the following schemes:

a processing module 701, configured to determine a target PRACH resource associated with a target reference signal resource from at least one PRACH resource, where the target PRACH resource is a reference signal resource corresponding to a target candidate beam of a neighbor cell of the communication device 700;

a transceiver module 702, configured to initiate beam recovery of a neighbor cell based on the target PRACH resource.

In another possible implementation, the at least one PRACH resource includes: at least one CFRA resource dedicated to beam restoration by the serving cell of communication apparatus 700;

In another possible implementation, the processing module 701 is further configured to:

if the service beam of the communication apparatus 700 fails and the reference signal resource corresponding to the service beam is a reference signal resource of a neighbor cell, determining a target PRACH resource associated with the target reference signal resource from the at least one PRACH resource.

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

In another possible implementation, the transceiver module 702 is further configured to:

first configuration information is received from the network device, the first configuration information being used to configure the first set of resources for the communication apparatus 700.

receiving second configuration information from the network device;

It should be understood that the specific process of each module to perform the corresponding process is described in detail in the embodiment shown in fig. 4, and is not described herein for brevity.

The processing module 701 in the above embodiments may be implemented by at least one processor or processor-related circuits. Transceiver module 702 may be implemented by a transceiver or transceiver-related circuitry. Transceiver module 702 may also be referred to as a communication module or communication interface. The memory module may be implemented by at least one memory.

Fig. 8 is another schematic structural diagram of a communication device according to an embodiment of the present application. Referring to fig. 8, a communication apparatus 800 may be used to perform the process performed by the network device in the embodiment shown in fig. 4, and specifically refer to the related description in the embodiment shown in fig. 4.

The communication device 800 comprises 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 configured to implement a corresponding communication function, and the transceiver module 802 may also be referred to as a communication interface or a communication module.

Optionally, the communication device 800 may further include a storage module, where the storage module may be used to store instructions and/or data, and the processing module 801 may read the instructions and/or data in the storage module, so that the communication device implements the embodiment shown in fig. 4 described above.

The communications apparatus 800 can be configured to perform the actions performed by the network device in the embodiment illustrated in fig. 4 above. The communication apparatus 800 may be a network device or a component configurable in a network device. The processing module 801 is configured to perform the operations related to the processing on the network device side in the embodiment shown in fig. 4 above. Optionally, the transceiver module 802 is configured to perform the operations related to the reception on the network device side in the embodiment shown in fig. 4 above.

Alternatively, the transceiver module 802 may include a transmitting module and a receiving module. The transmitting module is configured to perform the transmitting operation in the embodiment shown in fig. 4. The receiving module is configured to perform the receiving operation in the embodiment shown in fig. 4.

It should be noted that, the communication apparatus 800 may include a transmitting module, and not include a receiving module. Alternatively, the communication device 800 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether or not the above scheme executed by the communication apparatus 800 includes a transmission action and a reception action.

The communication device 800 may be used to perform the following scheme:

a processing module 801, configured to determine at least one PRACH resource of the terminal device, where each PRACH resource in the at least one PRACH resource is associated with one reference signal resource of a neighbor cell of the terminal device, and different PRACH resources are associated with different reference signal resources of the neighbor cell;

A transceiver module 802, configured to provide second configuration information to the terminal device, where the second configuration information is used to configure the plurality of PRACH resources for the terminal device.

In another possible implementation, the transceiver module 802 is further configured to:

It should be understood that the specific process of each module to perform the corresponding process is described in detail in the embodiment shown in fig. 8, and is not described herein for brevity.

The processing module 801 in the above embodiments may be implemented by at least one processor or processor-related circuits. Transceiver module 802 may be implemented by a transceiver or transceiver related circuitry. Transceiver module 802 may also be referred to as a communication module or communication interface. The memory module may be implemented by at least one memory.

Fig. 9 is another schematic structural diagram of a communication device according to an embodiment of the present application. Referring to fig. 9, a communication apparatus 900 may be used to perform the procedure performed by the terminal device in the embodiment shown in fig. 5, and specifically refer to the related description in the embodiment shown in fig. 5.

The communication device 900 comprises 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 configured to implement a corresponding communication function, and the transceiver module 902 may also be referred to as a communication interface or a communication module.

Optionally, the communication device 900 may further include a storage module, where the storage module may be used to store instructions and/or data, and the processing module 901 may read the instructions and/or data in the storage module, so that the communication device implements the embodiment shown in fig. 5.

The communication apparatus 900 may be used to perform the actions performed by the terminal device in the embodiment shown in fig. 5 above. The communication apparatus 900 may be a terminal device or a component configurable at a terminal device. The processing module 901 is configured to perform the operations related to the processing on the terminal device side in the embodiment shown in fig. 5 above. Optionally, the transceiver module 902 is configured to perform the operations related to the reception on the terminal device side in the embodiment shown in fig. 5 above.

Alternatively, the transceiver module 902 may include a transmitting module and a receiving module. The transmitting module is configured to perform the transmitting operation in the embodiment shown in fig. 5. The receiving module is configured to perform the receiving operation in the embodiment shown in fig. 5.

It should be noted that, the communication apparatus 900 may include a transmitting module, and not include a receiving module. Alternatively, the communication device 900 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether or not the above scheme executed by the communication apparatus 900 includes a transmission action and a reception action.

The communication device 900 may be used to perform the following:

a processing module 901, configured to determine a first resource set, where the first resource set includes at least one first reference signal resource, and the at least one first reference signal resource is used for beam failure detection of a neighbor cell of the communication device; if the reference signal resource corresponding to the service beam of the communication device is the reference signal resource of the neighbor cell, performing beam failure detection on the service beam by adopting the first reference signal resource included in the first resource set.

In a possible implementation manner, the processing module 901 is further configured to:

In another possible implementation, the first set of resources further includes at least one third reference signal resource for beam failure detection of a serving cell of the communication device; the processing module 901 is further configured to:

In another possible implementation, the communication device further includes a transceiver module 902;

the transceiver module 902 is configured to receive first configuration information from a network device, where the first configuration information is used to configure a first resource set.

It should be understood that the specific process of each module to perform the corresponding process is described in detail in the embodiment shown in fig. 9, and is not described herein for brevity.

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

Alternatively, the communication apparatus 900 shown in fig. 9 may be further configured to perform the steps performed by the terminal device in the embodiment shown in fig. 6. For example, the communication device 900 may also be used to perform the following schemes:

the processing module 901 is configured to perform beam failure detection on a service beam of the communication device 900 by using a second reference signal resource, where the second reference signal resource has a QCL relationship with a resource corresponding to PDCCH DMRS carried on the service beam.

Determining a first set of resources including at least one third reference signal resource for beam failure detection of a serving cell of the communication device 900;

the processing module 901 is specifically configured to:

if the reference signal resource corresponding to the service beam of the communication device 900 is the reference signal resource of the neighbor cell accessed by the communication device 900, the second reference signal resource is used to perform beam failure detection on the service beam.

Fig. 10 is another schematic structural diagram of a communication device according to an embodiment of the present application. Referring to fig. 10, a communication apparatus 1000 may be used to perform the process performed by the network device in the embodiment shown in fig. 5, and specifically refer to the related description in the embodiment shown in fig. 5.

The communication device 1000 comprises 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 configured to implement a corresponding communication function, and the transceiver module 1002 may also be referred to as a communication interface or a communication module.

Optionally, the communication device 1000 may further include a storage module, where the storage module may be used to store instructions and/or data, and the processing module 1001 may read the instructions and/or data in the storage module, so that the communication device implements the embodiment shown in fig. 5 described above.

The communications apparatus 1000 can be configured to perform the actions performed by the network device in the embodiment illustrated in fig. 5 above. The communication apparatus 1000 may be a network device or a component configurable in a network device. The processing module 1001 is configured to perform the operations related to the processing on the network device side in the embodiment shown in fig. 5 above. Optionally, the transceiver module 1002 is configured to perform the operations related to the reception on the network device side in the embodiment shown in fig. 5 above.

Alternatively, the transceiver module 1002 may include a transmitting module and a receiving module. The transmitting module is configured to perform the transmitting operation in the embodiment shown in fig. 5. The receiving module is configured to perform the receiving operation in the embodiment shown in fig. 5.

It should be noted that the communication apparatus 1000 may include a transmitting module, and not include a receiving module. Alternatively, the communication device 1000 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether or not the above scheme executed by the communication apparatus 1000 includes a transmission operation and a reception operation.

The communication device 1000 may be used to perform the following scheme:

a processing module 1001, configured to determine a first resource set, where the first resource set includes at least one first reference signal resource, and the at least one first reference signal resource is used for beam failure detection of a neighbor cell of a terminal device;

the transceiver module 1002 is configured to provide first configuration information to the terminal device, where the first configuration information is used to configure a first resource set for the terminal device.

The embodiment of the application also provides a communication device 1100. The communication device 1100 comprises a processor 1110, the processor 1110 being coupled to a memory 1120, the memory 1120 being for storing computer programs or instructions and/or data, the processor 1110 being for executing the computer programs or instructions and/or data stored by the memory 1120, such that the method in the above method embodiments is performed.

Optionally, the communication device 1100 includes one or more processors 1110.

Optionally, as shown in fig. 11, the communication device 1100 may also include a memory 1120.

Optionally, the communications apparatus 1100 can include one or more memories 1120.

Alternatively, the memory 1120 may be integrated with the processor 1110 or provided separately.

Optionally, as shown in fig. 11, the communication device 1100 may further include a transceiver 1130, the transceiver 1130 being configured to receive and/or transmit signals. For example, the processor 1110 is configured to control the transceiver 1130 to receive and/or transmit signals.

As an aspect, the communication apparatus 1100 is configured to implement the operations performed by the terminal device in the above method embodiment.

For example, the processor 1110 is configured to implement operations related to processing performed by the terminal device in the above method embodiment, and the transceiver 1130 is configured to implement operations related to transceiving performed by the terminal device in the above method embodiment.

As an option, the communication apparatus 1100 is configured to implement the operations performed by the network device in the above method embodiments.

For example, processor 1110 is configured to implement the process-related operations performed by the network device in the above method embodiments, and transceiver 1130 is configured to implement the transceiver-related operations performed by the network device in the above method embodiments.

The present application also provides a communication apparatus 1200, where the communication apparatus 1200 may be a terminal device, a processor of a terminal device, or a chip. The communication apparatus 1200 may be configured to perform the operations performed by the terminal device in the above-described method embodiments.

When the communication apparatus 1200 is a terminal device, fig. 12 shows a simplified schematic structure of the terminal device. As shown in fig. 12, the terminal device includes a processor, a memory, and a transceiver. The memory may store computer program codes, and the transceiver includes a transmitter 1231, a receiver 1232, radio frequency circuits (not shown), an antenna 1233, and input and output devices (not shown).

The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. An input/output device. For example, touch screens, display screens, keyboards, etc. are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory, processor, and transceiver are shown in fig. 12, and in an actual end device product, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, which is not limited by the embodiments of the present application.

In the embodiment of the application, the antenna and the radio frequency circuit with the transceiving function can be regarded as a transceiving module of the terminal equipment, and the processor with the processing function can be regarded as a processing module of the terminal equipment.

As shown in fig. 12, the terminal device includes a processor 1210, a memory 1220, and a transceiver 1230. Processor 1210 may also be referred to as a processing unit, processing board, processing module, processing device, etc., and transceiver 1230 may also be referred to as a transceiver unit, transceiver device, etc.

Alternatively, the means for implementing the receiving function in the transceiver 1230 may be regarded as a receiving module, and the means for implementing the transmitting function in the transceiver 1230 may be regarded as a transmitting module, i.e. the transceiver 1230 comprises a receiver and a transmitter. The transceiver may also be referred to as a transceiver, transceiver module, transceiver circuitry, or the like. The receiver may also be sometimes referred to as a receiver, a receiving module, a receiving circuit, or the like. The transmitter may also sometimes be referred to as a transmitter, a transmitting module, or a transmitting circuit, etc.

For example, in one implementation, the processor 1210 is configured to perform the processing actions on the terminal device side of the embodiment shown in fig. 4, and the transceiver 1230 is configured to perform the transceiving actions on the terminal device side in fig. 4. For example, processor 1210 is configured to perform the processing operations of 401 in the embodiment shown in FIG. 4. The transceiver 1230 is used to perform the process of 402 in the embodiment shown in fig. 4. Optionally, the transceiver 1230 is also used to perform 401c and 401d in the embodiment shown in fig. 4. Processor 1210 is also operative to perform processing operations 401a and 401b in the embodiment illustrated in fig. 4.

For example, in one implementation, the processor 1210 is configured to perform the processing actions on the terminal device side of the embodiment shown in fig. 5, and the transceiver 1230 is configured to perform the transceiving actions on the terminal device side in fig. 5. For example, processor 1210 is configured to perform the processing operations of 501 and 502 in the embodiment shown in fig. 5. Optionally, transceiver 1230 is used to perform the process of 501a in the embodiment shown in fig. 5. Processor 1210 is also operative to perform processing operations of 503 or 504 in the embodiment illustrated in fig. 5.

For example, in one implementation, the processor 1210 is configured to perform the processing actions on the terminal device side of the embodiment shown in fig. 6, and the transceiver 1230 is configured to perform the transceiving actions on the terminal device side in fig. 6. For example, processor 1210 is configured to perform the processing operations of 601 in the embodiment shown in fig. 6. Alternatively, the transceiver 1230 is used to perform the process of 601a in the embodiment shown in fig. 6. Processor 1210 is also operative to perform processing operations for 602 in the embodiment illustrated in fig. 6.

It should be understood that fig. 12 is only an example and not a limitation, and the above-described terminal device including the transceiver module and the processing module may not depend on the structure shown in fig. 7 or 9.

When the communication device 1200 is a chip, the chip includes a processor, a memory, and a transceiver. Wherein the transceiver may be an input-output circuit or a communication interface; the processor may be an integrated processing module or microprocessor or an integrated circuit on the chip. The sending operation of the terminal device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the terminal device in the above method embodiment may be understood as the input of the chip.

The present application also provides a communication apparatus 1300, where the communication apparatus 1300 may be a network device or a chip. The communications apparatus 1300 can be configured to perform the operations performed by a network device in the method embodiments described above with respect to fig. 4, 5, and 6.

When the communication apparatus 1300 is a network device, for example, a base station. Fig. 13 shows a simplified schematic of a base station architecture. The base station includes a portion 1310, a portion 1320, and a portion 1330. The 1310 part is mainly used for baseband processing, controlling a base station and the like; portion 1310 is typically a control center of the base station, and may be generally referred to as a processor, for controlling the base station to perform the processing operations on the network device side in the above method embodiment. Portion 1320 is mainly used for storing computer program code and data. The 1330 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; section 1330 may be referred to generally as a transceiver module, transceiver circuitry, or transceiver, etc. Section 1330, which may also be referred to as a transceiver or transceiver, includes an antenna 1333 and radio frequency circuitry (not shown) that is primarily configured to perform radio frequency processing. Alternatively, the means for implementing the receiving function in section 1330 may be considered a receiver and the means for implementing the transmitting function may be considered a transmitter, i.e., section 1330 includes a receiver 1332 and a transmitter 1331. The receiver may also be referred to as a receiving module, receiver, or receiving circuit, etc., and the transmitter may be referred to as a transmitting module, transmitter, or transmitting circuit, etc.

Portions

1310 and 1320 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used for reading and executing the program in the memory to realize the baseband processing function and control of the base station. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one implementation, the transceiver module of section 1330 is configured to perform the transceiver-related procedures performed by the terminal device in the embodiments shown in fig. 4-6. The processor of part 1310 is configured to perform the processes associated with the processing performed by the terminal device in the embodiments illustrated in fig. 4-6.

It should be understood that fig. 13 is merely an example and not a limitation, and that the network device including the processor, memory, and transceiver described above may not rely on the structure shown in fig. 8 or 10.

When the communications device 1300 is a chip, the chip includes a transceiver, a memory, and a processor. Wherein, the transceiver can be an input-output circuit and a communication interface; the processor is an integrated processor, or microprocessor, or integrated circuit on the chip. The sending operation of the network device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the network device in the above method embodiment may be understood as the input of the chip.

The embodiment of the application also provides a computer readable storage medium, on which computer instructions for implementing the method executed by the terminal device or the network device in the above method embodiment are stored.

Embodiments of the present application also provide a computer program product containing instructions that, when executed by a computer, cause the computer to implement a method performed by a terminal device or a network device in the above method embodiments.

The embodiment of the application also provides a communication system, which comprises the terminal equipment and the network equipment in the embodiment.

The embodiment of the application further provides a chip device, which comprises a processor, and the processor is used for calling the computer degree or the computer instruction stored in the memory, so that the processor executes the method of the embodiment shown in fig. 4 to 6.

In a possible implementation, the input of the chip device corresponds to the receiving operation in the embodiment shown in fig. 4 to 6, and the output of the chip device corresponds to the transmitting operation in the embodiment shown in fig. 4 to 6.

Optionally, the processor is coupled to the memory through an interface.

Optionally, the chip device further comprises a memory, in which the computer degree or the computer instructions are stored.

The processor mentioned in any of the above may be a general purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the methods of the embodiments shown in fig. 4 to 6. The memory mentioned in any of the above may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM), etc.

It will be clearly understood by those skilled in the art that, for convenience and brevity, explanation and beneficial effects of the relevant content in any of the above-mentioned communication devices may refer to the corresponding method embodiments provided above, and are not repeated here.

In the present application, the terminal device or the network device may include a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer may include a central processing unit (central processing unit, CPU), a memory management module (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes (processes), for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or windows operating system, etc. The application layer may include applications such as a browser, address book, word processor, instant messaging software, and the like.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, apparatuses and modules described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.

The integrated modules, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, a portion of the technical solution of the present application, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the procedures of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the technical scope of the embodiments of the present application.

Claims

1. A method of beam restoration, the method comprising:

the method comprises the steps that a terminal device determines target physical random access channel resources associated with target reference signal resources from at least one physical random access channel PRACH resource, wherein the target reference signal resources are reference signal resources corresponding to target candidate beams of neighbor cells of the terminal device;

the terminal equipment initiates beam recovery of the neighbor cell based on the target physical random access channel resource.

2. The method of claim 1, wherein the at least one physical random access channel, PRACH, resource comprises: at least one non-contention random access, CFRA, resource dedicated for beam recovery by the neighbor cell;

Wherein each CFRA resource is associated with one reference signal resource of the neighbor cell, different CFRA resources are associated with different reference signal resources of the neighbor cell, and each reference signal resource of the neighbor cell corresponds to one candidate beam of the neighbor cell.

3. The method of claim 1, wherein the at least one physical random access channel, PRACH, resource comprises: at least one contended random access CBRA resource of the neighbor cell;

wherein each CBRA resource is associated with one reference signal resource of the neighbor cell, different CBRA resources are associated with different reference signal resources of the neighbor cell, and each reference signal resource of the neighbor cell corresponds to one candidate beam of the neighbor cell.

4. The method of claim 1, wherein the at least one physical random access channel, PRACH, resource comprises: at least one non-contention random access, CFRA, resource dedicated for beam recovery for a serving cell of the terminal device;

5. The method of claim 2 or 4, wherein each CFRA resource is further associated with one reference signal resource of the serving cell, different CFRA resources being associated with different reference signal resources of the serving cell, each reference signal resource of a serving cell corresponding to one candidate beam of the serving cell.

6. The method according to any one of claims 1 to 5, further comprising:

and if the service beam of the terminal equipment fails and the reference signal resource corresponding to the service beam is the reference signal resource of the neighbor cell, executing the action that the terminal equipment 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.

7. The method according to any of claims 1 to 6, wherein before the terminal device determines a target physical random access channel resource associated with a target reference signal resource from at least one physical random access channel, PRACH, resource, the method further comprises:

the terminal equipment measures reference signal resources in a first resource set to obtain a measurement result, wherein the first resource set comprises one or more reference signal resources of the neighbor cell, and each reference signal resource corresponds to one candidate wave beam of the neighbor cell;

And the terminal equipment determines target reference signal resources from one or more reference signal resources of the neighbor cell according to the measurement result.

8. The method of claim 7, wherein the target reference signal resource is one of the reference signal resources having a signal quality greater than or equal to a first threshold value in the measurement result.

9. The method according to claim 7 or 8, characterized in that the method further comprises:

the terminal device receives first configuration information from a network device, where the first configuration information is used to configure the first resource set for the terminal device.

10. The method according to any one of claims 1 to 9, further comprising:

the terminal equipment receives second configuration information from the network equipment;

the second configuration information is used for configuring the at least one physical random access channel PRACH resource, each physical random access channel resource in the at least one physical random access channel PRACH resource is associated with one reference signal resource of the neighbor cell, and different physical random access channel resources are associated with different reference signal resources of the neighbor cell.

11. A method of beam failure detection, the method comprising:

the method comprises the steps that a terminal device determines a first resource set, wherein the first resource set comprises at least one first reference signal resource, and the at least one first reference signal resource is used for beam failure detection of a neighbor cell of the terminal device;

if the reference signal resource corresponding to the service beam of the terminal equipment is the reference signal resource of the neighbor cell, the terminal equipment adopts the first reference signal resource included in the first resource set to perform beam failure detection on the service beam.

12. The method of claim 11, wherein the method further comprises:

if the reference signal resource corresponding to the service beam of the terminal device is the reference signal resource of the serving cell, the terminal device performs beam failure detection on the service beam by adopting a second reference signal resource, where the second reference signal resource has a quasi-parity QCL relationship with a resource corresponding to a physical downlink control channel demodulation reference signal PDCCH DMRS carried on the service beam.

13. The method of claim 12, wherein the first set of resources further comprises at least one third reference signal resource for beam failure detection of a serving cell of the terminal device; the method further comprises the steps of:

14. The method of claim 13, wherein the first set of resources comprises a first subset and a second subset;

the first subset is associated with a physical cell identity, PCI, of the neighbour cell, the first subset comprising the at least one first reference signal resource;

the second subset is associated with a physical cell identity, PCI, of the serving cell, the second subset comprising the at least one third reference signal resource.

15. The method of claim 13, wherein each first reference signal resource in the first set of resources is associated with a physical cell identity, PCI, of the neighbor cell.

16. The method according to claim 13 or 15, wherein each third reference signal resource in the first set of resources is associated with a physical cell identity, PCI, of the serving cell.

17. The method according to any one of claims 11 to 16, further comprising:

The terminal device receives first configuration information from a network device, wherein the first configuration information is used for configuring the first resource set.

18. A communication device, the communication device comprising:

a memory for storing computer instructions;

a processor for executing a computer program or computer instructions stored in the memory, causing the communication device to perform the method of any one of claims 1 to 10; or cause the communication device to perform the method of any one of claims 11 to 17.

19. A communication device comprising a processor for executing a computer program or computer instructions in a memory to perform the method of any of claims 1 to 10 or to perform the method of any of claims 11 to 17.

20. A communication device comprising a processor for performing the method of any one of claims 1 to 10 or for performing the method of any one of claims 11 to 17.

21. A computer readable storage medium, having stored thereon a computer program which, when executed by a communication device, causes the communication device to perform the method of any of claims 1 to 10 or causes the communication device to perform the method of any of claims 11 to 17.