WO2019192286A1

WO2019192286A1 - Secondary cell beam failure recovery method, terminal and base station

Info

Publication number: WO2019192286A1
Application number: PCT/CN2019/077655
Authority: WO
Inventors: 谌丽; 伯特兰·皮埃尔
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-04-04
Filing date: 2019-03-11
Publication date: 2019-10-10
Also published as: CN110351875A

Abstract

The present disclosure provides a secondary cell beam failure recovery method, a terminal and a base station. Said method comprises: sending a random access request on an uplink carrier of a secondary cell; and receiving, on a downlink control resource set (CORESET) configured by the base station, a random access response sent by the base station according to the random access request.

Description

Secondary cell beam failure recovery method, terminal and base station

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201 810 299 940 3.9 filed on Apr. 4, s.

Technical field

The present disclosure relates to the technical field of communication applications, and in particular, to a secondary cell beam failure recovery method, a terminal, and a base station.

Background technique

In the 5G NR system, beamforming is widely used for transmission. The terminal and the base station transmit signaling and data on the determined beam, and the receiving and transmitting beams of the base station and the terminal have a corresponding relationship. When the terminal measures that the current working beam channel quality is not good, it needs to initiate a Beam Failure Recovery (BFR) process, which is implemented by random access, specifically selecting a specific beam for the terminal, initiating random access, and randomly. After successful access, it is considered that beam failure recovery is completed on the selected beam. The random access procedure for beam failure recovery may be non-contention random access or contention random access. Beam failure recovery refers to the terminal re-finding the beam beam whose channel quality meets the requirements, which is represented by the terminal selecting a new available Synchronization Signal Block (SSB) or Channel State Information Reference Signal (Channel State Information Reference Signal, CSI-RS), different SSBs or CSI-RSs correspond to different beams. In the following description, selecting beam is equivalent to selecting SSB or CSI-RS.

The non-contention random access for BFR includes: the network side configures a candidate beam set for the terminal, and allocates non-contention access resources (PRACH resources and/or preamble codes) on multiple beams of the candidate beam set. If the terminal has a non-contention random access resource on the selected beam, the non-contention random access is initiated, and after the terminal sends the random access request Msg1 (uplink), the configured physical downlink control channel PDCCH command is configured in the configured time. In the control resource set (CORESET), the PDCCH command (downlink) that is scrambled by the Cell Radio Network Temporary Identifier (C-RNTI) is received, and the non-contention random access is considered successful. That is, the terminal obtains available uplink and downlink beam pairs.

The contention of the random access for the BFR includes: if the beams in the candidate beam set do not satisfy the channel quality condition, the terminal may initiate the contention random access on the beam with other good channel quality to perform beam failure recovery. The competitive random access procedure is consistent with other competing random access procedures in the connected state. After the contending random access is completed, the terminal determines the uplink and downlink beam pairs that are available after the beam failure recovery according to the uplink and downlink beams in the random access process.

The beam failure recovery process in a single cell in the related art directly acquires the uplink and downlink beam correspondences available in the cell through the transmission and reception of the uplink and downlink beams in the random access process. In Carrier Aggregation (CA), the terminal works on multiple cells, and the common search space for sending random access responses is not configured on the downlink carrier of the secondary cell SCell. That is, the random access response Msg2 cannot be sent on the SCell. The random access response Msg2 can only be sent on the primary cell PCell. In this way, through the random access process, the correspondence between the uplink and downlink beams cannot be obtained, that is, the beam failure recovery cannot be truly achieved, and the subsequent data transmission process is normally performed.

Summary of the invention

The purpose of the embodiments of the present disclosure is to provide a secondary cell beam failure recovery method, a terminal, and a base station, to solve the problem that the terminal cannot implement the beam failure recovery process on the secondary cell.

In order to achieve the above object, an embodiment of the present disclosure provides a method for recovering a secondary cell beam failure, which is applied to a terminal, including:

Sending a random access request on the uplink carrier of the secondary cell;

And receiving, by the base station, the downlink control resource set CORESET, the random access response sent by the base station according to the random access request.

Before the step of sending a random access request on the uplink carrier of the secondary cell, the method further includes:

Receiving a non-contention random access resource configuration for a beam failure recovery BFR sent by the base station;

The non-contention random access resource configuration includes:

Non-contention random access resources for beam failure recovery on the uplink carrier of the secondary cell;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.

The step of sending a random access request on the uplink carrier of the secondary cell includes:

When the BFR is resumed, the first measurement resource is measured, the first target measurement resource whose channel quality is greater than a preset threshold is selected, and the first target downlink beam direction corresponding to the first target measurement resource is determined;

Sending a random access request on the non-contention random access resource in the uplink beam direction corresponding to the first target downlink beam direction.

The beam failure recovery response is: a physical downlink physical control channel PDCCH with a terminal cell radio network temporary identifier C-RNTI.

Receiving a configuration of a contention random access resource sent by the base station;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource is an SSB or a CSI-RS.

When the BFR is initiated, the second target measurement resource whose channel quality is greater than the preset threshold is selected in the second measurement resource, and the random access request is sent on the contention random access resource corresponding to the second target measurement resource. .

The step of receiving the random access response sent by the base station according to the random access request on the downlink control resource set CORESET configured by the base station, further includes:

After the random access procedure is completed, the secondary cell downlink beam indication sent by the base station is received.

In order to achieve the above object, an embodiment of the present disclosure further provides a method for recovering a secondary cell beam failure, which is applied to a base station, including:

Receiving a random access request sent by the terminal on the uplink carrier of the secondary cell;

And transmitting, according to the random access request, a random access response on a downlink control resource set CORESET configured for the terminal.

Before the step of the random access request sent by the receiving terminal on the uplink carrier of the secondary cell, the method further includes:

Transmitting a non-contention random access resource configuration for beam failure recovery BFR to the terminal;

The non-contention random access resource configuration includes: a non-contention random access resource for beam failure recovery on a secondary cell uplink carrier;

Receiving a downlink CORESET of the random access response;

The random access response is a beam failure recovery response.

And the step of sending a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request, including:

Determining a downlink CORESET of the downlink carrier of the primary cell corresponding to the target random access resource, where the target random access resource is a transmission resource for the terminal to send a random access request, where the target random access resource is a non-contention random access resource or Competitive random access resources;

A random access response is sent on the downlink CORESET of the downlink carrier of the primary cell.

The downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

And the step of sending a random access response on the target resource configured for the terminal according to the random access request, including:

Determining a downlink beam direction of the secondary carrier downlink carrier corresponding to the target random access resource, where the target random access resource is a sending resource for the terminal to send a random access request;

A random access response is sent on the downlink CORESET in the downlink beam direction.

The beam failure recovery response is: a PDCCH with a terminal C-RNTI.

Sending a contention of a random access resource to the terminal;

The contention of the contention random access resource includes:

Receiving a downlink CORESET of the random access response;

The second measurement resource includes an SSB or a CSI-RS.

The step of sending a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request includes:

Sending a random access response on the downlink CORESET of the downlink carrier of the primary cell corresponding to the target uplink beam;

The target uplink beam is an uplink beam that sends a random access request.

After the step of sending a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request, the method further includes:

After the random access procedure is completed, the secondary cell downlink beam indication is sent to the terminal, where the downlink beam indication is used to indicate the downlink beam direction that the terminal is available on the secondary cell.

In order to achieve the above object, an embodiment of the present disclosure further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, where the processor implements the program The following steps:

Sending a random access request on the uplink carrier of the secondary cell by the transceiver;

The random access response sent by the base station according to the random access request is received by the transceiver on the downlink control resource set CORESET configured by the base station.

Wherein, when the processor executes the program, the following steps may also be implemented:

Receiving, by the transceiver, a non-contention random access resource configuration for a beam failure recovery BFR sent by the base station;

The non-contention random access resource configuration includes:

Receiving a downlink CORESET of the random access response;

The random access response is a beam failure recovery response.

Receiving, by the transceiver, a configuration of a contention random access resource sent by the base station;

The contention of the contention random access resource includes:

Receiving a downlink CORESET of the random access response;

The second measurement resource is an SSB or a CSI-RS.

In order to achieve the above object, an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the secondary cell beam failure recovery method as described above.

In order to achieve the above object, an embodiment of the present disclosure further provides a base station, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, where the processor implements the program The following steps:

Receiving, by the transceiver, a random access request sent by the terminal on the uplink carrier of the secondary cell;

The non-contention random access resource configuration includes:

Receiving a downlink CORESET of the random access response;

The random access response is a beam failure recovery response.

The processor may also implement the following steps when executing the program:

The beam failure recovery response is: a PDCCH with a terminal C-RNTI.

Sending a contention of a random access resource to the terminal;

The contention of the contention random access resource includes:

Receiving a downlink CORESET of the random access response;

The second measurement resource includes an SSB or a CSI-RS.

The target uplink beam is an uplink beam that sends a random access request.

In order to achieve the above object, an embodiment of the present disclosure further provides a terminal, including:

a first sending module, configured to send a random access request on the uplink carrier of the secondary cell;

The first receiving module is configured to receive, by the base station, the downlink control resource set CORESET, the random access response sent by the base station according to the random access request.

The terminal of the embodiment of the present disclosure further includes:

a second receiving module, configured to receive a non-contention random access resource configuration for a beam failure recovery BFR sent by the base station;

The non-contention random access resource configuration includes:

Receiving a downlink CORESET of the random access response;

The random access response is a beam failure recovery response.

The terminal of the embodiment of the present disclosure further includes:

a third receiving module, configured to receive a contention of a random access resource sent by the base station;

The contention of the contention random access resource includes:

Receiving a downlink CORESET of the random access response;

The second measurement resource is an SSB or a CSI-RS.

In order to achieve the above object, an embodiment of the present disclosure further provides a base station, including:

a fourth receiving module, configured to receive a random access request sent by the terminal on the uplink carrier of the secondary cell;

The second sending module is configured to send a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request.

The base station of the embodiment of the present disclosure further includes:

a third sending module, configured to send, to the terminal, a non-contention random access resource configuration for beam failure recovery BFR;

The non-contention random access resource configuration includes:

Receiving a downlink CORESET of the random access response;

The random access response is a beam failure recovery response.

The base station of the embodiment of the present disclosure further includes:

a fourth sending module, configured to send a contention of a random access resource to the terminal;

The contention of the contention random access resource includes:

Receiving a downlink CORESET of the random access response;

The second measurement resource includes an SSB or a CSI-RS.

Embodiments of the present disclosure have the following beneficial effects:

In the above technical solution of the embodiment of the present disclosure, a random access request is sent on the uplink carrier of the secondary cell; on the downlink control resource set CORESET configured by the base station, the random access response sent by the base station according to the random access request is implemented, thereby implementing In the carrier aggregation CA, the beam failure recovery process of the terminal on the secondary cell SCell enables the terminal to correctly complete the uplink and downlink beam identification and matching on the secondary cell, so that the terminal can work normally on the secondary cell, and can also implement uplink and downlink resources. Rational use.

DRAWINGS

FIG. 1 is a schematic flowchart of a method for recovering a secondary cell beam failure according to an embodiment of the present disclosure;

2 is a second schematic flowchart of a secondary cell beam failure recovery method according to an embodiment of the present disclosure;

3 is a structural block diagram of a terminal according to an embodiment of the present disclosure;

4 is a schematic block diagram of a terminal according to an embodiment of the present disclosure;

FIG. 5 is a structural block diagram of a base station according to an embodiment of the present disclosure;

FIG. 6 is a schematic block diagram of a base station according to an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

FIG. 1 is a schematic flowchart of a method for recovering a secondary cell beam failure according to an embodiment of the present disclosure. As shown in FIG. 1 , a method for recovering a secondary cell beam failure in the embodiment of the present disclosure is applied to a terminal, including:

Step 101: Send a random access request on the secondary cell uplink carrier.

The random access request is specifically a random access preamble preamble.

Step 102: Receive, on a downlink control resource set CORESET configured by the base station, a random access response sent by the base station according to the random access request.

The downlink control resource set CORESET is located on the downlink carrier of the primary cell or on the downlink carrier of the secondary cell.

The foregoing step 102 may specifically include: receiving, on a downlink CORESET of a downlink carrier of a primary cell or a downlink CORESET of a secondary carrier downlink carrier, a random access response sent by the base station according to the random access request.

The secondary cell beam failure recovery method of the embodiment of the present disclosure sends a random access request on the secondary cell uplink carrier; on the downlink control resource set CORESET configured by the base station, the receiving base station sends a random access response according to the random access request. Therefore, the beam failure recovery process of the terminal on the secondary cell SCell is implemented in the carrier aggregation CA, so that the terminal correctly completes the uplink and downlink beam identification and matching on the secondary cell, so that the terminal can work normally on the secondary cell, and can also be implemented. Rational use of upstream and downstream resources.

Further, before the step of sending a random access request on the uplink carrier of the secondary cell, the step 101 further includes:

The non-contention random access resource configuration includes: a non-contention random access resource for beam failure recovery on the secondary cell uplink carrier; a secondary cell downlink carrier for downlink measurement, and corresponding to the non-contention random access resource a first measurement resource; and a downlink CORESET that receives the random access response;

The random access response is a beam failure recovery response.

Based on this, as an optional implementation, the foregoing step 101 sends a random access request on the uplink carrier of the secondary cell, including:

And transmitting a random access request on the non-contention random access resource in the uplink beam direction corresponding to the first target downlink beam direction.

Here, the base station sends a non-contention random access resource configuration for the beam failure recovery BFR to the terminal, and after the terminal sends a random access request on the secondary cell uplink carrier, according to the non-contention random access resource configuration, the downlink carrier in the primary cell The downlink CORESET or the downlink CORESET receive beam failure recovery response of the secondary cell downlink carrier completes the beam failure recovery process on the secondary cell.

Specifically, the beam failure recovery response is: a physical downlink physical control channel PDCCH with the terminal cell radio network temporary identifier C-RNTI.

The contending random access resource configuration includes: a contending random access resource for the beam failure recovery on the secondary cell uplink carrier; a downlink measurement on the secondary cell downlink carrier, and a second corresponding to the contending random access resource Measuring resources; and receiving a downlink CORESET of the random access response;

The second measurement resource is an SSB or a CSI-RS.

It should be noted that, in the embodiment of the present disclosure, the terminal preferentially performs non-contention random access, performs measurement on the first measurement resource in the non-contention random access resource configuration, and detects that the channel quality of the first measurement resource is not satisfied. When conditions are met, then competitive random access is performed.

Specifically, when the BFR is initiated, and the first target measurement resource is detected in the first measurement resource, the random access request is sent on the non-contention random access resource corresponding to the first measurement resource, where the The first measurement resource is a measurement resource corresponding to the non-contention random access resource, and the first target measurement resource is a measurement resource whose channel quality is greater than a preset threshold in the first measurement resource;

When the BFR is initiated, and the first target measurement resource is not detected in the first measurement resource, the second target measurement resource whose channel quality is greater than a preset threshold is selected in the second measurement resource, and the second target is in the second target A random access request is sent on the contention random access resource corresponding to the measurement resource.

Here, the base station sends the contending random access resource configuration to the terminal, and the terminal sends the random access request on the secondary cell uplink carrier according to the non-contention random access resource configuration and the contending random access resource configuration, and then downlinks in the primary cell downlink carrier. The receive beam fails to recover the response on CORESET, thereby completing the beam failure recovery process on the secondary cell.

Further, after the step 102, the beam failure recovery method of the embodiment of the present disclosure further includes:

In the embodiment of the present disclosure, for the non-contention random access, after receiving the random access response, the terminal considers that the non-contention random access is successful. For the contention random access, the terminal receives the random access response Msg2, and completes After the transmission of Msg3 and Msg4, it is considered that the random access is successful.

Preferably, when the downlink CORESET is located on the downlink carrier of the primary cell, after the random access procedure is completed, the secondary cell downlink beam indication sent by the base station is received, and the terminal determines, according to the secondary cell downlink beam indication, that the terminal is available on the secondary cell. Downstream beam direction.

As shown in FIG. 2, an embodiment of the present disclosure further provides a secondary cell beam failure recovery method, which is applied to a base station, and includes:

Step 201: Receive a random access request sent by the terminal on the uplink carrier of the secondary cell.

The random access request is specifically a random access preamble preamble.

Step 202: Send a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request.

The foregoing step 202 may specifically include: sending a random access response on the downlink CORESET of the downlink carrier of the primary cell or the downlink CORESET of the secondary carrier downlink carrier.

The secondary cell beam failure recovery method of the embodiment of the present disclosure, the receiving the random access request sent by the terminal on the uplink carrier of the secondary cell; and sending the random access on the downlink control resource set CORESET configured for the terminal according to the random access request In response to the carrier aggregation CA, the terminal fails to recover the beam on the secondary cell SCell, so that the terminal correctly completes the uplink and downlink beam identification and matching on the secondary cell, so that the terminal can work normally on the secondary cell, and at the same time, Realize the rational use of upstream and downstream resources.

Further, before the step 201 receives the random access request sent by the terminal on the uplink carrier of the secondary cell, the method further includes:

The random access response is a beam failure recovery response.

Specifically, when the downlink CORESET is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell, the foregoing step 202 is configured to configure the downlink control resource for the terminal according to the random access request. The steps of sending a random access response on the CORESET, including:

Specifically, when the downlink CORESET is located in the terminal-specific search space USS of the secondary cell downlink carrier, the step 202 is configured to send a random access response on the target resource configured for the terminal according to the random access request, including:

Here, the base station configures the non-contention random access resource configuration for the beam failure recovery BFR, and after the terminal sends the random access request on the secondary cell uplink carrier, the base station downlinks in the primary cell according to the non-contention random access resource configuration. The downlink CORESET of the carrier or the downlink CORESET of the secondary cell downlink carrier transmits a beam failure recovery response, thereby completing the beam failure recovery process on the secondary cell.

Specifically, the beam failure recovery response is: a PDCCH with a terminal C-RNTI.

Sending a contention of a random access resource to the terminal;

The second measurement resource includes an SSB or a CSI-RS.

Based on this, the foregoing step 202 sends a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request, including:

The target uplink beam is an uplink beam that sends a random access request.

Here, the base station sends a contending random access resource configuration to the terminal, and after receiving the random access request sent by the terminal on the secondary cell uplink carrier, sends a beam failure recovery response to the terminal on the downlink CORESET of the primary cell downlink carrier, thereby The beam failure recovery process on the secondary cell is completed.

Further, after the step 202, the beam failure recovery method of the embodiment of the present disclosure further includes:

The downlink beam direction that is available on the secondary cell is determined according to the relationship between the sending resource of the random access request sent by the terminal and the downlink beam of the downlink carrier of the secondary cell.

Preferably, when the downlink CORESET is located on the downlink carrier of the primary cell, after the random access procedure is completed, the base station sends a secondary cell downlink beam indication to the terminal, so that the terminal determines, according to the secondary cell downlink beam indication, that the terminal is on the secondary cell. The available downstream beam direction.

The following describes the exchange process between the terminal and the base station in the specific implementation manner of the embodiment of the present disclosure.

Implementation 1: Non-contention random access (receive random access response on the secondary cell SCell)

The interaction process includes:

Step 11: The base station configures the non-contention random access resource configuration for the BFR on the secondary cell for the terminal and sends the configuration to the terminal.

The content included in the non-contention random access resource configuration has been described in detail in the above content, and details are not described herein again.

Step 12: The terminal receives the non-contention random access resource configuration configured by the base station for BFR.

Step 13: When the terminal needs to initiate the BFR, the first measurement resource is measured according to the non-contention random access resource configuration, and the first target downlink beam direction of the first target measurement resource whose channel quality is greater than a preset threshold is selected. A random access request Msg1 is sent on the non-contention random access resource in the uplink beam direction corresponding to the target downlink beam direction.

Step 14: The base station receives the random access request Msg1 sent by the terminal, and determines the downlink beam direction of the secondary cell downlink carrier corresponding to the non-contention random access resource according to the non-contention random access resource that the terminal sends the Msg1.

Step 15: The base station transmits a PDCCH with the terminal C-RNTI on the downlink CORESET in the downlink beam direction determined in step 14.

Step 16: The terminal monitors the PDCCH with the C-RNTI in the downlink CORESET for monitoring the BFR response on the downlink carrier of the secondary cell.

In the first implementation manner, the base station sends the non-contention random access resource configuration to the terminal, and the terminal sends the Msg1 on the secondary cell uplink carrier according to the non-contention random access resource configuration, and the base station sends the Msg1 non-contention random access resource according to the The PDCCH with the C-RNTI of the terminal is transmitted on the CORESET of the downlink beam direction of the downlink carrier of the secondary cell corresponding to the non-contention random access resource, so as to implement a beam failure recovery process of the terminal on the secondary cell SCell under carrier aggregation CA.

Implementation 2: Non-contention random access (receive random access response on the primary cell)

The interaction process includes:

Step 21: The base station configures, for the terminal, the non-contention random access resource configuration for the BFR on the secondary cell, and sends the configuration to the terminal.

Step 22: The terminal receives the non-contention random access resource configuration configured by the base station for BFR.

Step 23: When the terminal needs to initiate the BFR, the first measurement resource is measured according to the non-contention random access resource configuration, and the first target downlink beam direction of the first target measurement resource whose channel quality is greater than a preset threshold is selected. A random access request Msg1 is sent on the non-contention random access resource in the uplink beam direction corresponding to the target downlink beam direction.

Step 24: The base station receives the random access request Msg1 sent by the terminal, and determines, according to the non-contention random access resource of the Msg1, the downlink CORESET of the downlink carrier of the primary cell corresponding to the non-contention random access resource.

Step 25: The base station sends a PDCCH with the terminal C-RNTI on the downlink CORESET determined in step 24.

Step 26: The terminal receives the PDCCH with the C-RNTI in the CORESET for receiving the BFR response on the downlink carrier of the primary cell.

Optionally, in the implementation manner 2, the method further includes:

Step 27: The base station sends a beam indication of the secondary cell to the terminal, which is used to indicate the downlink beam direction that the terminal is available in the secondary cell.

The downlink beam direction available to the secondary cell is determined by the base station according to the relationship between the transmission resource of the Msg1 and the downlink beam of the secondary carrier downlink carrier.

Step 28: The terminal receives the secondary cell beam indication sent by the base station, and determines the downlink beam direction that the terminal is available in the secondary cell.

In the second implementation manner, the base station sends a non-contention random access resource configuration to the terminal, and the terminal sends the Msg1 on the secondary cell uplink carrier according to the non-contention random access resource configuration, and the base station sends the Msg1 non-contention random access resource according to the The PDCCH with the C-RNTI of the terminal is sent on the downlink CORESET of the downlink carrier of the primary cell corresponding to the non-contention random access resource, so that the beam failure recovery process of the terminal on the secondary cell SCell under the carrier aggregation CA is implemented.

Implementation 3: Competitive random access

The interaction process includes:

Step 31: The base station configures the contention of the contending random access resources on the uplink carrier of the secondary cell for the terminal and sends the configuration to the terminal.

Step 32: The terminal receives the contention of the contention random access resource sent by the base station.

Step 33: When the terminal needs to initiate the BFR, the first measurement resource is measured according to the non-contention random access resource configuration. If the channel quality of the first target measurement resource corresponding to the non-contention random access resource is greater than a preset threshold, A non-contention random access is initiated, and a second target measurement resource whose channel quality is greater than a preset threshold is selected in the second measurement resource, and a contention random connection is initiated on the contention random access resource corresponding to the second target measurement resource. In.

The specific implementation manner of initiating non-contention random access is the same as the implementation manner of the foregoing implementation manner 1 or 2.

Step 34: The base station receives the random access request sent by the terminal, and determines the downlink beam direction of the terminal on the secondary cell according to the sending resource of the terminal sending the random access request.

Step 35: The base station sends a random access response on the downlink beam of the primary cell corresponding to the uplink beam that sends the random access request.

Step 36: The terminal receives a random access response on the downlink carrier of the primary cell.

Step 37: The base station and the terminal complete the subsequent process of random access on the primary cell.

Optionally, the implementation manner 3 further includes:

Step 38: The base station sends a beam indication of the secondary cell to the terminal, which is used to indicate the downlink beam direction that the terminal is available in the secondary cell.

The downlink beam direction is determined by the base station according to the relationship between the transmission resource of the Msg1 and the downlink beam of the secondary carrier downlink carrier.

Step 39: The terminal receives the secondary cell beam indication sent by the base station, and is used to determine a downlink beam direction that the terminal is available in the secondary cell.

In the third implementation manner, the base station sends the contention of the contending random access resource to the terminal, and the terminal sends the Msg1 on the uplink carrier of the secondary cell according to the non-contention random access resource configuration and the contending random access resource configuration, and the base station sends the random access request. A random access response is sent on the downlink beam of the primary cell corresponding to the uplink beam, so that the terminal fails to recover the beam on the secondary cell SCell.

The secondary cell beam failure recovery method of the embodiment of the present disclosure can implement the beam failure recovery process of the terminal on the secondary cell SCell under the carrier aggregation CA, so that the terminal correctly completes the uplink and downlink beam identification and matching on the secondary cell, thereby enabling the terminal to It can work normally in the secondary cell, and at the same time, it can also realize the rational use of uplink and downlink resources.

As shown in FIG. 3, an embodiment of the present disclosure further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor executing the program The following steps are implemented:

Sending a random access request on the uplink carrier of the secondary cell;

Here, in FIG. 3, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 300 and various circuits of memory represented by memory 320. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 310 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 330 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 300 is responsible for managing the bus architecture and general processing, and the memory 320 can store data used by the processor 300 in performing operations.

Optionally, the processor 300 is further configured to read the program in the memory 320, and perform the following steps:

The random access response is a beam failure recovery response.

Optionally, the beam failure recovery response is: a physical downlink physical control channel PDCCH with a terminal cell radio network temporary identifier C-RNTI.

The second measurement resource is an SSB or a CSI-RS.

In some embodiments of the present disclosure, there is also provided a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:

Sending a random access request on the uplink carrier of the secondary cell;

When the program is executed by the processor, all the implementation manners in the foregoing embodiment of the secondary cell beam failure recovery method applied to the terminal side can be implemented. To avoid repetition, details are not described herein again.

As shown in FIG. 4, an embodiment of the present disclosure further provides a terminal, including:

The first sending module 401 is configured to send a random access request on the uplink carrier of the secondary cell;

The first receiving module 402 is configured to receive, by the base station, the downlink control resource set CORESET, the random access response sent by the base station according to the random access request.

The terminal of the embodiment of the present disclosure further includes:

The random access response is a beam failure recovery response.

In the terminal of the embodiment of the present disclosure, the first sending module 401 includes:

a measurement submodule, configured to: when the BFR is initiated to recover the BFR, measure the first measurement resource, select a first target measurement resource whose channel quality is greater than a preset threshold, and determine a first corresponding to the first target measurement resource a target downlink beam direction;

The first sending submodule is configured to send a random access request on the non-contention random access resource in the uplink beam direction corresponding to the first target downlink beam direction.

In the terminal of the embodiment of the present disclosure, the beam failure recovery response is: a physical downlink physical control channel PDCCH with a terminal cell radio network temporary identifier C-RNTI.

The terminal of the embodiment of the present disclosure further includes:

The second measurement resource is an SSB or a CSI-RS.

In the terminal of the embodiment of the present disclosure, the first sending module 401 is configured to: when the BFR is initiated, select, in the second measurement resource, a second target measurement resource whose channel quality is greater than a preset threshold, and in the second target A random access request is sent on the contention random access resource corresponding to the measurement resource.

The terminal of the embodiment of the present disclosure further includes:

The fifth receiving module is configured to receive a secondary cell downlink beam indication sent by the base station after the random access procedure is completed.

The terminal in the embodiment of the present disclosure sends a random access request on the secondary cell uplink carrier; on the downlink control resource set CORESET configured by the base station, the receiving base station sends a random access response according to the random access request, thereby implementing carrier aggregation. In the CA, the beam failure recovery process of the terminal on the secondary cell SCell enables the terminal to correctly complete the uplink and downlink beam identification and matching on the secondary cell, so that the terminal can work normally on the secondary cell, and the uplink and downlink resources can be realized reasonably. use.

As shown in FIG. 5, an embodiment of the present disclosure further provides a base station, including a memory 520, a processor 500, a transceiver 510, a bus interface, and a program stored on the memory 520 and executable on the processor 500. The processor 500 is configured to read a program in the memory 520 and perform the following process:

In FIG. 5, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

Optionally, when the processor 500 executes the program, the following steps may also be implemented:

The random access response is a beam failure recovery response.

Optionally, the downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Optionally, the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

Optionally, the beam failure recovery response is: a PDCCH with a terminal C-RNTI.

Sending a contention of a random access resource to the terminal;

The second measurement resource includes an SSB or a CSI-RS.

The target uplink beam is an uplink beam that sends a random access request.

When the program is executed by the processor, all the implementation manners of the foregoing method embodiments applied to the base side can be implemented. To avoid repetition, details are not described herein again.

As shown in FIG. 6, an embodiment of the present disclosure further provides a base station, including:

The fourth receiving module 601 is configured to receive a random access request sent by the terminal on the uplink carrier of the secondary cell;

The second sending module 602 is configured to send a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request.

The base station of the embodiment of the present disclosure further includes:

The random access response is a beam failure recovery response.

In the base station of the embodiment of the present disclosure, the downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

The second sending module 602 includes:

a first determining submodule, configured to determine a downlink CORESET of a downlink carrier of the primary cell corresponding to the target random access resource, where the target random access resource is a sending resource for the terminal to send a random access request, and the target random access resource Non-competitive random access resources or competitive random access resources;

The second sending submodule is configured to send a random access response on the downlink CORESET of the downlink carrier of the primary cell.

In the base station of the embodiment of the present disclosure, the downlink CORESET is located in a terminal-specific search space USS of a secondary carrier downlink carrier;

The second sending module 602 includes:

a second determining submodule, configured to determine a downlink beam direction of the secondary cell downlink carrier corresponding to the target random access resource, where the target random access resource is a sending resource for the terminal to send a random access request;

The third sending submodule is configured to send a random access response on the downlink CORESET in the downlink beam direction.

In the base station of the embodiment of the present disclosure, the beam failure recovery response is: a PDCCH with a terminal C-RNTI.

The base station of the embodiment of the present disclosure further includes:

The second measurement resource includes an SSB or a CSI-RS.

In the base station of the embodiment of the present disclosure, the second sending module 602 is configured to send a random access response on the downlink CORESET of the downlink carrier of the primary cell corresponding to the target uplink beam.

The target uplink beam is an uplink beam that sends a random access request.

The base station of the embodiment of the present disclosure further includes:

The indication module is configured to send, after the random access procedure is completed, a secondary cell downlink beam indication to the terminal, where the downlink beam indication is used to indicate a downlink beam direction that is available to the terminal on the secondary cell.

The base station of the embodiment of the present disclosure receives a random access request sent by the terminal on the uplink carrier of the secondary cell, and sends a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request, thereby implementing the carrier. The aggregation failure recovery process of the terminal in the secondary cell SCell enables the terminal to correctly complete the uplink and downlink beam identification and matching on the secondary cell, so that the terminal can work normally on the secondary cell and also implement uplink and downlink resources. Rational use.

In various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present disclosure. The implementation process constitutes any limitation.

The above is a preferred embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present disclosure. It should be considered as the scope of protection of this disclosure.

Claims

A method for recovering a secondary cell beam failure is applied to a terminal, where the method includes:

Sending a random access request on the uplink carrier of the secondary cell;

And receiving, by the base station, the downlink control resource set CORESET, the random access response sent by the base station according to the random access request.
The method for recovering a secondary cell beam failure according to claim 1, before the step of sending a random access request on the uplink carrier of the secondary cell, the method further includes:

Receiving a non-contention random access resource configuration for a beam failure recovery BFR sent by the base station;

The non-contention random access resource configuration includes:

Non-contention random access resources for beam failure recovery on the uplink carrier of the secondary cell;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.
The method of claim 2, wherein the step of transmitting a random access request on the uplink carrier of the secondary cell comprises:

When the BFR is resumed, the first measurement resource is measured, the first target measurement resource whose channel quality is greater than a preset threshold is selected, and the first target downlink beam direction corresponding to the first target measurement resource is determined;

Sending a random access request on the non-contention random access resource in the uplink beam direction corresponding to the first target downlink beam direction.
The secondary cell beam failure recovery method according to claim 2, wherein the beam failure recovery response is: a physical downlink physical control channel PDCCH with a terminal cell radio network temporary identifier C-RNTI.
The method for recovering a secondary cell beam failure according to claim 1, before the step of sending a random access request on the uplink carrier of the secondary cell, the method further includes:

Receiving a configuration of a contention random access resource sent by the base station;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource is an SSB or a CSI-RS.
The method for recovering a random access request on the secondary carrier uplink carrier according to claim 5, wherein the step of transmitting a random access request on the secondary cell uplink carrier includes:

When the BFR is initiated, the second target measurement resource whose channel quality is greater than the preset threshold is selected in the second measurement resource, and the random access request is sent on the contention random access resource corresponding to the second target measurement resource. .
The secondary cell beam failure recovery method according to claim 1, after the step of receiving the random access response sent by the base station according to the random access request on the downlink control resource set CORESET configured by the base station, the method further includes:

After the random access procedure is completed, the secondary cell downlink beam indication sent by the base station is received.
A secondary cell beam failure recovery method is applied to a base station, and the method includes:

Receiving a random access request sent by the terminal on the uplink carrier of the secondary cell;

And transmitting, according to the random access request, a random access response on a downlink control resource set CORESET configured for the terminal.
The method for recovering a secondary cell beam failure according to claim 8, before the step of the random access request sent by the receiving terminal on the uplink carrier of the secondary cell, the method further includes:

Transmitting a non-contention random access resource configuration for beam failure recovery BFR to the terminal;

The non-contention random access resource configuration includes: a non-contention random access resource for beam failure recovery on a secondary cell uplink carrier;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.
The secondary cell beam failure recovery method according to claim 9, wherein the downlink CORESET is located in a common search space CSS of a primary cell downlink carrier or a terminal-specific search space USS of a primary cell downlink carrier;

And the step of sending a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request, including:

Determining a downlink CORESET of the downlink carrier of the primary cell corresponding to the target random access resource, where the target random access resource is a transmission resource for the terminal to send a random access request, where the target random access resource is a non-contention random access resource or Competitive random access resources;

A random access response is sent on the downlink CORESET of the downlink carrier of the primary cell.
The secondary cell beam failure recovery method according to claim 9, wherein the downlink CORESET is located in a terminal-specific search space USS of a secondary cell downlink carrier;

And the step of sending a random access response on the target resource configured for the terminal according to the random access request, including:

Determining a downlink beam direction of the secondary carrier downlink carrier corresponding to the target random access resource, where the target random access resource is a sending resource for the terminal to send a random access request;

A random access response is sent on the downlink CORESET in the downlink beam direction.
The secondary cell beam failure recovery method according to claim 10 or 11, wherein the beam failure recovery response is: a PDCCH with a terminal C-RNTI.
The method for recovering a secondary cell beam failure according to claim 8, wherein before the step of the random access request sent by the receiving terminal on the uplink carrier of the secondary cell, the method further includes:

Sending a contention of a random access resource to the terminal;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource includes an SSB or a CSI-RS.
The method according to claim 13, wherein the step of transmitting a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request comprises:

Sending a random access response on the downlink CORESET of the downlink carrier of the primary cell corresponding to the target uplink beam;

The target uplink beam is an uplink beam that sends a random access request.
The method for recovering a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request according to the method of claim 8, further comprising:

After the random access procedure is completed, the secondary cell downlink beam indication is sent to the terminal, where the downlink beam indication is used to indicate the downlink beam direction that the terminal is available on the secondary cell.
A terminal includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor executes the program to implement the following steps:

Sending a random access request on the uplink carrier of the secondary cell by the transceiver;

The random access response sent by the base station according to the random access request is received by the transceiver on the downlink control resource set CORESET configured by the base station.
The terminal of claim 16, wherein the processor further implements the following steps when the program is executed:

Receiving, by the transceiver, a non-contention random access resource configuration for a beam failure recovery BFR sent by the base station;

The non-contention random access resource configuration includes:

Non-contention random access resources for beam failure recovery on the uplink carrier of the secondary cell;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.
The terminal of claim 17, wherein the processor further implements the following steps when the program is executed:

When the BFR is resumed, the first measurement resource is measured, the first target measurement resource whose channel quality is greater than a preset threshold is selected, and the first target downlink beam direction corresponding to the first target measurement resource is determined;

Sending a random access request on the non-contention random access resource in the uplink beam direction corresponding to the first target downlink beam direction.
The terminal according to claim 17, wherein the beam failure recovery response is: a physical downlink physical control channel PDCCH with a terminal cell radio network temporarily identifying a C-RNTI.
The terminal of claim 16, wherein the processor further implements the following steps when the program is executed:

Receiving, by the transceiver, a configuration of a contention random access resource sent by the base station;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource is an SSB or a CSI-RS.
The terminal of claim 20, wherein the processor further implements the following steps when the program is executed:

When the BFR is initiated, the second target measurement resource whose channel quality is greater than the preset threshold is selected in the second measurement resource, and the random access request is sent on the contention random access resource corresponding to the second target measurement resource. .
The terminal of claim 16, wherein the processor further implements the following steps when the program is executed:

After the random access procedure is completed, the secondary cell downlink beam indication sent by the base station is received.
A computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the steps of the secondary cell beam failure recovery method of any one of claims 1 to 7.
A base station includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor executes the program to implement the following steps:

Receiving, by the transceiver, a random access request sent by the terminal on the uplink carrier of the secondary cell;

And transmitting, according to the random access request, a random access response on a downlink control resource set CORESET configured for the terminal.
The base station according to claim 24, wherein said processor further implements the following steps when said program is executed:

Transmitting a non-contention random access resource configuration for beam failure recovery BFR to the terminal;

The non-contention random access resource configuration includes:

Non-contention random access resources for beam failure recovery on the uplink carrier of the secondary cell;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.
The base station according to claim 25, wherein the downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

The processor may also implement the following steps when executing the program:

Determining a downlink CORESET of the downlink carrier of the primary cell corresponding to the target random access resource, where the target random access resource is a transmission resource for the terminal to send a random access request, where the target random access resource is a non-contention random access resource or Competitive random access resources;

A random access response is sent on the downlink CORESET of the downlink carrier of the primary cell.
The base station according to claim 25, wherein the downlink CORESET is located in a terminal-specific search space USS of a secondary cell downlink carrier;

The processor may also implement the following steps when executing the program:

Determining a downlink beam direction of the secondary carrier downlink carrier corresponding to the target random access resource, where the target random access resource is a sending resource for the terminal to send a random access request;

A random access response is sent on the downlink CORESET in the downlink beam direction.
The base station according to claim 26 or 27, wherein the beam failure recovery response is: a PDCCH with a terminal C-RNTI.
The base station according to claim 24, wherein said processor further implements the following steps when said program is executed:

Sending a contention of a random access resource to the terminal;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource includes an SSB or a CSI-RS.
The base station according to claim 29, wherein said processor further implements the following steps when said program is executed:

Sending a random access response on the downlink CORESET of the downlink carrier of the primary cell corresponding to the target uplink beam;

The target uplink beam is an uplink beam that sends a random access request.
The base station according to claim 24, wherein said processor further implements the following steps when said program is executed:

After the random access procedure is completed, the secondary cell downlink beam indication is sent to the terminal, where the downlink beam indication is used to indicate the downlink beam direction that the terminal is available on the secondary cell.
A computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the steps of the secondary cell beam failure recovery method of any one of claims 8 to 15.
A terminal comprising:

a first sending module, configured to send a random access request on the uplink carrier of the secondary cell;

The first receiving module is configured to receive, by the base station, the downlink control resource set CORESET, the random access response sent by the base station according to the random access request.
The terminal of claim 33, further comprising:

a second receiving module, configured to receive a non-contention random access resource configuration for a beam failure recovery BFR sent by the base station;

The non-contention random access resource configuration includes:

Non-contention random access resources for beam failure recovery on the uplink carrier of the secondary cell;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.
The terminal of claim 33, further comprising:

a third receiving module, configured to receive a contention of a random access resource sent by the base station;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource is an SSB or a CSI-RS.
A base station comprising:

a fourth receiving module, configured to receive a random access request sent by the terminal on the uplink carrier of the secondary cell;

The second sending module is configured to send a random access response on the downlink control resource set CORESET configured for the terminal according to the random access request.
The base station according to claim 36, further comprising:

a third sending module, configured to send, to the terminal, a non-contention random access resource configuration for beam failure recovery BFR;

The non-contention random access resource configuration includes:

Non-contention random access resources for beam failure recovery on the uplink carrier of the secondary cell;

a first measurement resource corresponding to the non-contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET is located in a common search space CSS of a downlink carrier of a primary cell or a terminal-specific search space USS of a downlink carrier of a primary cell;

Or the downlink CORESET is located in a terminal-specific search space USS of the downlink carrier of the secondary cell;

The first measurement resource is a synchronization signal block SSB or a channel state information reference signal CSI-RS;

The random access response is a beam failure recovery response.
The base station according to claim 36, further comprising:

a fourth sending module, configured to send a contention of a random access resource to the terminal;

The contention of the contention random access resource includes:

a contention random access resource for beam failure recovery on the uplink carrier of the secondary cell;

And a second measurement resource corresponding to the contention random access resource on the downlink carrier of the secondary cell; and

Receiving a downlink CORESET of the random access response;

The downlink CORESET in the contention of the contending random access resource is located in the common search space CSS of the downlink carrier of the primary cell or the terminal-specific search space USS of the downlink carrier of the primary cell;

The second measurement resource includes an SSB or a CSI-RS.