CN115843114A

CN115843114A - Beam recovery and request method, device and computer readable storage medium

Info

Publication number: CN115843114A
Application number: CN202110893386.3A
Authority: CN
Inventors: 马大为
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-03-24

Abstract

A beam recovery and request method, device and computer readable storage medium, the beam recovery request method comprising: receiving indication information, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed from a second TCI state, and the PCIs associated with the at least one first TCI state are the same; measuring a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state, resulting in a first measurement result, the first measurement result being indicative of a signal quality of the beam monitoring reference signal; and if the first measurement result meets a first condition, sending a beam recovery request. The scheme can avoid longer time delay caused by RRC signaling reconfiguration, and reduce downlink resource overhead.

Description

Beam recovery and request method, device and computer readable storage medium

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a computer-readable storage medium for beam recovery and request.

Background

Based on the 3GPP NR protocol, in a cell, a next generation base station (next generation nodeB) and a User Equipment (UE) determine an optimal transmit-receive beam through a beam training process, and improve transmission quality of uplink and downlink signals by using the optimal transmit-receive beam. In the beam training and reporting process, the UE stores the receive beam corresponding to each reported transmit beam.

According to the NR protocol, while the gNB configures and/or instructs the UE to transmit and receive using the corresponding beam, the gNB configures a set of beam monitoring reference signals and a set of candidate beam identification reference signals to the UE through RRC signaling, which are respectively used for monitoring a beam failure event and identifying a candidate beam. And when monitoring a beam failure event, the UE sends a beam recovery request to the gNB, wherein the request information comprises a cell and/or a candidate beam with failed beam. And after receiving the beam recovery request, the gNB sends a beam recovery response message to the UE to indicate that the beam recovery is successful.

The 3GPP supports, in the NR Rel-17 version, fast Transmission and Reception Point (TRP) handover through Media Access Control (MAC) Control Element (CE) MAC CE signaling, and supports beam training on a target TRP in advance, thereby implementing seamless data communication in the UE moving process. In order to support that the UE can perform beam recovery when communicating with any TRP, after TRP handover, the gNB needs to reconfigure a beam monitoring reference signal and a candidate beam identification reference signal corresponding to the current TRP through RRC signaling. However, RRC signaling reconfiguration adds additional latency and overhead.

Disclosure of Invention

The embodiment of the invention solves the problems of longer time delay and higher downlink resource expense caused by RRC signaling reconfiguration.

The embodiment of the invention provides a beam recovery request method, which comprises the following steps: receiving indication information, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed from a second TCI state, and the PCIs associated with the at least one first TCI state are the same; measuring a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state, resulting in a first measurement result, the first measurement result being indicative of a signal quality of the beam monitoring reference signal; and if the first measurement result meets a first condition, sending a beam recovery request.

Optionally, the method for requesting beam recovery further includes: receiving cell configuration information, the cell configuration information including the at least one second TCI status, each second TCI status being associated with a PCI, and the at least one second TCI status including the at least one first TCI status.

Optionally, the cell configuration information further includes at least one of the following: at least one beam monitoring reference signal, and each beam monitoring reference signal is associated with a PCI; at least one candidate beam identifies a reference signal, and each beam monitoring reference signal is associated with a PCI.

Optionally, the receiving the cell configuration information includes: and receiving an RRC message, and acquiring the cell configuration information from the RRC message.

Optionally, the receiving the indication information includes: and receiving a first MAC CE message, and acquiring the indication information from the first MAC CE message.

Optionally, the method for requesting beam recovery further includes: measuring a specific candidate wave beam identification reference signal to obtain a second measurement result; wherein the second measurement result satisfies a second condition.

Optionally, the specific candidate beam identification reference signal includes at least one of: a PCI-associated candidate beam identification reference signal associated with at least one first TCI state indicated by the indication information; the PCI-unassociated candidate beam identification reference signals associated with the at least one first TCI state indicated by the indication information.

Optionally, the beam recovery request includes at least one of: the indication information indicates the identity of the PCI associated with the at least one first TCI state, and the index of the optimal candidate beam identification reference signal.

Optionally, the method for requesting beam recovery further includes: receiving the beam recovery response message, and performing beam recovery; the beam recovery response message corresponds to the beam recovery request.

Optionally, the receive beam recovery response message includes any one of: receiving a second MAC CE message indicating reactivation of one or more TCI states; and receiving DCI signaling for scheduling new uplink data on the HARQ process corresponding to the beam recovery request.

The embodiment of the invention also provides a beam recovery method, which comprises the following steps: sending indication information, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed from a second TCI state, and the PCIs associated with the at least one first TCI state are the same; receiving a beam recovery request; and transmitting a beam recovery response message corresponding to the beam recovery request.

Optionally, the method further includes: sending cell configuration information; the cell configuration information includes the at least one second TCI state, each second TCI state is associated with a PCI, and the at least one second TCI state includes the at least one first TCI state.

Optionally, the cell configuration information further includes at least one of the following: at least one beam monitoring reference signal, and each beam monitoring reference signal is associated with a PCI; at least one candidate beam identifies a reference signal and each beam monitoring reference signal is associated with a PCI.

Optionally, the sending the cell configuration information includes: and sending RRC message, wherein the RRC message carries the cell configuration information.

Optionally, the sending the indication information includes: and sending a first MAC CE message, wherein the first MAC CE message carries the indication information.

Optionally, the beam recovery request includes at least one of: the identity of the PCI associated with the at least one first TCI state indicated by the indication information, an index of an optimal candidate beam identification reference signal; the optimal candidate beam identification reference signal is selected from specific candidate beam identification reference signals.

Optionally, the sending the beam recovery response message includes any one of: transmitting a second MAC CE message indicating reactivation of one or more TCI states; and sending DCI signaling, wherein the DCI signaling is used for scheduling new uplink data on the HARQ process occupied by sending the beam recovery request.

An embodiment of the present invention further provides a beam recovery request apparatus, including: the indication information receiving unit is used for receiving indication information, the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed out of a second TCI state, and the PCI associated with the at least one first TCI state is the same; a measurement unit, configured to measure a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state, and obtain a first measurement result, where the first measurement result is used to indicate signal quality of the beam monitoring reference signal; a transmitting unit, configured to transmit a beam recovery request when the first measurement result satisfies a first condition.

An embodiment of the present invention further provides a beam recovery apparatus, including: the device comprises an indication information sending unit, a first TCI state determination unit and a second TCI state determination unit, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed out of the second TCI state, and the PCI associated with the at least one first TCI state is the same; a beam recovery request receiving unit for receiving a beam recovery request; a response message transmitting unit for transmitting a beam recovery response message corresponding to the beam recovery request.

An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has a computer program stored thereon, where the computer program is executed by a processor to perform the steps of any of the beam recovery request methods described above, or to perform the steps of any of the beam recovery methods described above.

An embodiment of the present invention further provides a communication apparatus, including a memory and a processor, where the memory stores a computer program executable on the processor, and when the processor executes the computer program, the communication apparatus executes any one of the beam recovery request methods described above.

An embodiment of the present invention further provides another wave communication apparatus, including a memory and a processor, where the memory stores a computer program executable on the processor, and when the processor executes the computer program, the communication apparatus executes any one of the beam recovery methods described above.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

receiving indication information, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed from a second TCI state, and the at least one TCI state is associated with the same PCI. And measuring a beam monitoring reference signal corresponding to the PCI associated with the at least one TCI state according to the received indication information to obtain a first measurement result. When the first measurement result satisfies a first condition, a beam recovery request is transmitted. At least one beam monitoring reference signal associated with the PCI associated with the TCI state can be obtained in advance, so that the beam monitoring reference signal does not need to be reconfigured by using RRC signaling during TRP switching, and time delay caused by using the RRC signaling can be avoided and downlink resource overhead can be reduced.

Drawings

Fig. 1 is a flowchart of a beam recovery request method in an embodiment of the present invention;

fig. 2 is a flow chart of a beam recovery method in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a beam recovery request apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a beam recovery apparatus in an embodiment of the present invention.

Detailed Description

As described in the above background art, in order to support that the UE can perform beam recovery when communicating with any TRP, after TRP handover, the gNB needs to reconfigure a beam monitoring reference signal and a candidate beam identification reference signal corresponding to a current TRP through RRC signaling. Therefore, RRC signaling reconfiguration adds additional latency and overhead.

In an embodiment of the present invention, indication information is received, the indication information being used to determine at least one first TCI state, the at least one first TCI state being indexed from a second TCI state, and the at least one first TCI state being associated with the same PCI. And measuring a beam monitoring reference signal corresponding to the PCI associated with at least one TCI state according to the received indication information to obtain a first measurement result. When the first measurement result satisfies a first condition, a beam recovery request is transmitted. At least one beam monitoring reference signal associated with the PCI associated with the TCI state can be obtained in advance, so that the beam monitoring reference signal does not need to be reconfigured by using RRC signaling during TRP handover, thereby avoiding time delay caused by using RRC signaling and reducing downlink resource overhead.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

An embodiment of the present invention provides a method for requesting a beam recovery, which is described in detail with reference to fig. 1 through specific steps.

In the embodiment of the present invention, the beam recovery request method provided in the following steps S101 to S103 may be executed by the user equipment. Specifically, the following steps S101 to S103 may be executed by a baseband chip in the user equipment, or executed by a chip module including the baseband chip in the user equipment.

Step S101, receiving indication information.

In a specific implementation, the user equipment may receive indication information, which may be used to indicate at least one first TCI state, at least one indicated first TCI state being activated. The indication information may be sent by the base station or the network side. For example, the indication information is generated and transmitted by the gNB. Accordingly, the user equipment receives the indication information sent by the base station or the network side equipment.

In an embodiment of the invention, at least one first TCI state may be associated with the same PCI. In other words, the indication information may be used to indicate the first TCI states corresponding to the same PCI, and the number of the first TCI states corresponding to the same PCI may be 1 or more.

In a specific implementation, the ue may further receive cell configuration information before receiving the indication information. The cell configuration information may be sent from the base station to the ue. That is, the base station may configure and issue the indication information for the ue in advance, and the ue substantially stores the cell configuration information issued by the base station before receiving the indication information. The cell configuration information may correspond to one or more serving/physical cells.

The user equipment may obtain the first TCI status indicated by the indication information from the received cell configuration information after receiving the indication information.

In the embodiment of the present invention, the ue may receive a Radio Resource Control (RRC) message, and acquire cell configuration information from the received RRC message.

In an embodiment of the present invention, the cell configuration information may include at least one second TCI status, each second TCI status is associated with one PCI, the PCIs associated with different second TCI statuses may be the same or different, and the at least one second TCI status includes at least one first TCI status. In other words, the first TCI state may be a subset of the second TCI state.

For example, the second TCI state includes TCI state 1, TCI state 2, TCI state 3, and TCI state 4. The first TIC state includes TCI state 1, TCI state 2. The first TCI state is part of the second TCI state.

As another example, the second TCI state includes TCI state 1, TCI state 2. The first TIC state includes TCI state 1 and TCI state 2. The first TCI state is the second TCI state.

The cell configuration information may further include at least one of: at least one beam monitors a reference signal, and at least one candidate beam identifies the reference signal. That is, the cell configuration information may further include at least one beam monitoring reference signal, or at least one candidate beam identification reference signal, or at least one beam monitoring reference signal and at least one candidate beam identification reference signal.

When the cell configuration information includes at least one beam monitoring reference signal, each beam monitoring reference signal may be associated with one PCI, and different beam monitoring reference signals may be associated with the same or different PCIs.

There may be a PCI corresponding to one of the different beam-monitoring reference signals. For example, the number of the configured beam monitoring reference signals is 2, and there are 2 PCIs, where the beam monitoring reference signal 1 is associated with the PCI1, and the beam monitoring reference signal 2 is associated with the PCI2.

Different beam-monitoring reference signals may also be associated with the same PCI. For example, each of the beam monitor reference signal 1 and the beam monitor reference signal 2 is associated with PCI1.

Among the multiple beam monitoring reference signals, part of the beam monitoring reference signals may be associated with the same PCI, and part of the beam monitoring reference signals may be associated with PCIs in one-to-one correspondence. For example, beam monitor reference signal 1 and beam monitor reference signal 2 are both associated with PCI, and beam monitor reference signal 3 is associated with PCI2.

When the cell configuration information includes at least one candidate beam identification reference signal, each candidate beam identification reference signal may be associated with one PCI, and different candidate beam identification references may be associated with the same or different PCIs.

The different candidate beam identification reference signals may have a PCI corresponding to one of them. For example, the number of candidate beam id reference signals is 2, and there are 2 different PCIs, the candidate beam id reference signal 1 is associated with PCI1, and the candidate beam id reference signal 2 is associated with PCI2.

Different candidate beam identification reference signals may also be associated with the same PCI. For example, the candidate beam identification reference signal 1 and the candidate beam identification reference signal 2 are both associated with PCI1.

Among the multiple candidate beam identification reference signals, part of the candidate beam identification reference signals may be associated with the same PCI, and part of the candidate beam identification reference signals may be associated with one-to-one corresponding PCIs. For example, candidate beam identification reference signal 1 is associated with candidate beam identification reference signal 2 PCI1, candidate beam identification reference signal 3 is associated with PCI2, and candidate beam identification reference signal 4 is associated with PCI3.

In the embodiment of the present invention, the cell configuration information may configure a plurality of second TCI states, a plurality of beam monitoring reference signals, and a plurality of candidate beam identification reference signals. The plurality of beam monitoring reference signals and the plurality of candidate beam identification reference signals in the cell configuration information may correspond to different TRPs.

It should be noted that, in the embodiment of the present invention, the at least one second TCI status, the at least one beam monitoring reference signal, and the at least one candidate beam identification reference signal may be preconfigured by the base station or the network side device. The base station or the network side device may configure the information for the user equipment through the cell configuration information, or may configure the information for the user equipment through configuration information of other types or names.

In a specific implementation, the ue may receive the first MAC CE message and obtain the indication information from the first MAC CE message.

With reference to the foregoing example, the ue receives the first MAC CE message, and acquires the indication information from the first MAC CE message, where the first TCI status indicated by the indication information is: TCI State 1 and TCI State 2, and both TCI State 1 and TCI State 2 are associated with PCI1.

Step S102, measuring a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state.

In a specific implementation, the ue may measure at least one beam monitoring reference signal, which is associated with a PCI associated with at least one first TCI state, to obtain a first measurement result. The first measurement result may be used to indicate a signal quality of the beam monitoring reference signal. In the embodiment of the present invention, the user equipment may use the existing protocol to measure the beam monitoring reference signal, and the specific measurement process and principle may refer to the existing protocol specification.

For example, the index of the at least one TCI state indicated by the indication information corresponds to TCI state 1 and TCI state 2, and both TCI state 1 and TCI state 2 are associated with PCI1. And the beam monitoring reference signal 1 is associated with the PCI1, and the user equipment measures the beam monitoring reference signal 1 corresponding to the PCI1 to obtain the signal quality of the beam monitoring reference signal 1.

In the embodiment of the present invention, the ue may further measure at least one specific candidate beam identification reference signal to obtain a second measurement result, where the second measurement result satisfies a second condition. The second measurement result is used to indicate the signal quality of the particular candidate beam identification reference signal. The at least one specific candidate beam-identifying reference signal may be selected from the at least one candidate beam-identifying reference signal in the cell configuration information.

For example, the cell configuration information includes the following configurations: candidate beam identification reference signal 1, candidate beam identification reference signal 2, candidate beam identification reference signal 3, candidate beam identification reference signal 4. The user equipment selects the candidate beam identification reference signal 2 as a specific candidate beam identification reference signal, performs corresponding measurement on the candidate beam identification reference signal 2, and obtains a second measurement result corresponding to the candidate beam identification reference signal 2.

Step S103, if the first measurement result satisfies a first condition, sending a beam recovery request.

In a specific implementation, after the user equipment acquires the first measurement result, it may be determined whether the first measurement result meets a preset first condition. If the first measurement result meets a preset first condition, the ue may generate and transmit a beam recovery request.

In the embodiment of the present invention, the user equipment may send the generated beam recovery request to the base station.

In an embodiment of the present invention, the first condition may be that a condition for triggering a transmission beam recovery request is satisfied. In an embodiment of the present invention, a hypothetical downlink control channel block error rate is calculated according to a beam monitoring reference signal associated with a PCI associated with at least one first TCI state indicated by the indication information; and if the block error rate of the hypothetical downlink control channel is greater than a specific threshold value within a period of time, determining that beam failure occurs. Meanwhile, signal receiving power is calculated according to the specific candidate beam identification reference signal, and if the signal receiving power of the specific candidate beam identification reference signal is greater than a threshold (that is, the second measurement result meets the second condition), it is determined that the first condition is met, and a beam recovery request is generated and transmitted.

In the embodiment of the present invention, the first condition may also be a condition for determining that a beam fails. An existing condition for determining a beam failure may be used as the first condition provided in the embodiment of the present invention. Accordingly, when the user equipment detects that the beam monitoring reference signal beam associated with the PCI associated with the at least one first TCI status indicated by the indication information fails, a beam recovery request may be transmitted.

In particular implementations, the number of specific candidate beam identification signals may be multiple. When the number of the specific candidate beam identification reference signals is multiple, the user equipment measures all the specific candidate beam identification reference signals, and determines the optimal candidate beam identification reference signal according to the measurement result.

In this embodiment of the present invention, after detecting that the first measurement result satisfies the first condition, the beam recovery request generated by the user equipment may include only the identifier of the PCI associated with the at least one first TCI state indicated by the indication information, may also include only the index of the optimal candidate beam identification reference signal, and may also include both the identifier of the PCI associated with the at least one first TCI state indicated by the indication information and the index of the optimal candidate beam identification reference signal.

In the embodiment of the present invention, the identification of the PCI associated with the at least one first TCI state indicated by the indication information may be the same as or different from the PCI corresponding to the optimal candidate beam identification reference signal.

For example, the PCI associated with the at least one first TCI state indicated by the indication information is PCI1, and the PCI corresponding to the optimal candidate beam identification reference signal is PCI2. For another example, the PCI associated with the at least one first TCI state indicated by the indication information is PCI1, and the PCI corresponding to the optimal candidate beam identification reference signal is PCI1.

In a specific implementation, the specific candidate beam identification reference signal may be a candidate beam identification reference signal associated with the PCI associated with the at least one first TCI state indicated by the indication information, may be a candidate beam identification reference signal not associated with the PCI associated with the at least one first TCI state indicated by the indication information, and may be all candidate beam identification reference signals included in the cell configuration information. In a specific application, a specific candidate beam identification reference signal may be determined according to a specific application scenario.

In a specific implementation, the user equipment may further receive a beam recovery response message after transmitting the beam recovery request. After receiving the beam recovery response message, the user equipment may perform a corresponding beam recovery operation until the beam recovery is successful. The specific procedure of the beam recovery operation performed by the user equipment may also refer to the existing protocol.

In the embodiment of the present invention, the user equipment may send a beam recovery request to the base station. After receiving the beam recovery request, the base station may generate a beam recovery response message corresponding to the beam recovery request and transmit the beam recovery response message to the user equipment.

In an embodiment of the present invention, the beam recovery response message sent by the base station to the user equipment is a second MAC CE message. The second MAC CE message may be used to indicate reactivation of one or more TCI states. And the user equipment receives a second MAC CE message transmitted by the base station and reactivates one or more TCI states according to the indication of the second MAC CE message.

In another embodiment of the present invention, the beam recovery response message sent by the base station to the user equipment is: and scheduling the DCI signaling of the new uplink data on the HARQ process occupied by the transmission beam recovery request. And the user equipment receives DCI signaling for scheduling new uplink data on the HARQ process corresponding to the beam recovery request, thereby determining that the beam recovery response message is received.

In summary, in the embodiment of the present invention, the beam monitoring reference signal associated with the PCI associated with at least one TCI state may be obtained in advance, so that it is not necessary to reconfigure the beam monitoring reference signal using RRC signaling during TRP handover, which can avoid delay caused by using RRC signaling and reduce downlink resource overhead.

Referring to fig. 2, a beam recovery method in an embodiment of the present invention is shown, and the following detailed description is made by specific steps.

In the embodiment of the present invention, the beam recovery method provided in steps S201 to S202 described below may be executed by a base station or a network side device. Specifically, the following steps S201 to S203 may be executed by a chip having a data processing capability in the base station or the network side device, or executed by a chip module including a data processing chip in the base station or the network side device.

Step S201, the instruction information is transmitted.

In a specific implementation, the indication information may be used to indicate at least one first TCI status, and the at least one first TCI status indicated by the indication information may be associated with the same PCI. In other words, the indication information may be used to indicate the first TCI states corresponding to the same PCI, and the number of the first TCI states corresponding to the same PCI may be 1 or more.

In the embodiment of the invention, the indication information can be issued by the base station or the network side and received by the user equipment. For example, the indication information is generated and transmitted by the gNB.

In a specific implementation, before issuing the indication information, the cell configuration information may also be issued first. In the embodiment of the invention, the base station or the network side can issue the cell configuration information, and the user equipment receives the cell configuration information. After receiving the cell configuration information, the user equipment receives the indication information.

That is, the indication information may be configured in advance for the ue and issued, and the ue substantially stores the cell configuration information issued in advance before receiving the indication information. The cell configuration information may correspond to one or more serving/physical cells.

In a specific implementation, after receiving the indication information, the user equipment may obtain at least one first TCI status indicated by the indication information from the received cell configuration information.

In the embodiment of the invention, the base station can send the cell configuration information to the user equipment through the RRC message. The user equipment may receive the RRC message and obtain cell configuration information from the received RRC message.

In an embodiment of the present invention, the cell configuration information may include at least one second TCI status, each second TCI status is associated with one PCI, the PCIs associated with different second TCI statuses may be the same or different, and the at least one second TCI status includes at least one first TCI status. In other words, the first TCI state may be a subset corresponding to the second TCI state.

For example, the second TCI state includes TCI state 1, TCI state 2, TCI state 3, and TCI state 4. The first TIC state includes TCI state 1 and TCI state 2. The first TCI state is part of the second TCI state.

Among the plurality of beam monitoring reference signals, part of the beam monitoring reference signals may be associated with the same PCI, and part of the beam monitoring reference signals may be associated with one-to-one corresponding PCIs. For example, beam monitor reference signal 1 and beam monitor reference signal 2 are both associated with PCI, and beam monitor reference signal 3 is associated with PCI2.

The different candidate beam identification reference signals may have a PCI associated with one of the correspondences. For example, the number of candidate beam id reference signals is 2, and there are 2 different PCIs, the candidate beam id reference signal 1 is associated with PCI1, and the candidate beam id reference signal 2 is associated with PCI2.

In a specific implementation, the indication information may be transmitted to the user equipment through a first MAC CE message. The user equipment may receive the first MAC CE message and obtain the indication information from the first MAC CE message.

Step S202, a beam recovery request is received.

In a specific implementation, after activating one or more TCI states associated with the same PCI, the ue may measure a beam monitoring reference signal associated with the PCI associated with at least one first TCI state to obtain a first measurement result. The first measurement result may be used to indicate a signal quality of the beam monitoring reference signal. In the embodiment of the present invention, the user equipment may use the existing protocol to measure the beam monitoring reference signal, and the specific measurement process and principle may refer to the existing protocol specification.

In the embodiment of the present invention, the first condition may be that a condition for triggering a transmission beam recovery request is satisfied. In an embodiment of the present invention, a hypothetical downlink control channel block error rate is calculated according to a beam monitoring reference signal associated with a PCI associated with at least one first TCI state indicated by the indication information; and if the block error rate of the hypothetical downlink control channel is greater than a specific threshold value within a period of time, determining that beam failure occurs. Meanwhile, signal receiving power is calculated according to the specific candidate beam identification reference signal, and if the signal receiving power of the specific candidate beam identification reference signal is greater than a threshold (that is, the second measurement result meets the second condition), it is determined that the first condition is met, and a beam recovery request is generated and transmitted.

In the embodiment of the present invention, the first condition may also be a condition for determining that the beam fails. An existing condition for determining a beam failure may be used as the first condition provided in the embodiment of the present invention. Accordingly, when the user equipment detects that the beam monitoring reference signal beam associated with the PCI associated with the at least one first TCI status indicated by the indication information fails, a beam recovery request may be transmitted.

In the embodiment of the present invention, the identification of the PCI associated with the at least one first TCI state indicated by the indication information may be the same as or different from the PCI corresponding to the optimal candidate beam recognition reference signal.

Step S203, transmitting a beam recovery response message corresponding to the beam recovery request.

In a specific implementation, after receiving the beam recovery response message, the user equipment may perform a corresponding beam recovery operation until the beam recovery is successful. The specific procedure of the beam recovery operation performed by the user equipment may also refer to the existing protocol.

In another embodiment of the present invention, the beam recovery response message sent by the base station to the user equipment is: and scheduling the DCI signaling of the new uplink data on the HARQ process occupied by the transmission beam recovery request. And the user equipment receives DCI signaling for scheduling new uplink data on the HARQ process corresponding to the transmission beam recovery request, thereby determining that the beam recovery response message is received.

Therefore, in the embodiment of the invention, at least one beam monitoring reference signal associated with the PCI associated with the TCI state is configured for the user equipment in advance, and the beam monitoring reference signal does not need to be reconfigured by using RRC signaling during TRP switching, so that the time delay caused by using the RRC signaling can be avoided, and the downlink resource overhead can be reduced.

Referring to fig. 3, a schematic structural diagram of a beam recovery request apparatus in an embodiment of the present invention is shown, where the beam recovery request apparatus 30 includes: an instruction information receiving unit 301, a measuring unit 302, and a transmitting unit 303, wherein:

an indication information receiving unit 301, configured to receive indication information, where the indication information is used to determine at least one first TCI state, where the at least one first TCI state is indexed from a second TCI state, and PCIs associated with the at least one first TCI state are the same; (ii) a

A measuring unit 302, configured to measure a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state, and obtain a first measurement result, where the first measurement result is used to indicate a signal quality of the beam monitoring reference signal;

a sending unit 303, configured to send a beam recovery request when the first measurement result satisfies a first condition.

In a specific implementation, the specific execution processes of the indication information receiving unit 301, the measuring unit 302, and the sending unit 303 may refer to step S101 to step S103, which is not described herein again in this embodiment of the present invention.

In an implementation, the beam recovery request device 30 may correspond to a chip having a data processing function in the user equipment, such as a baseband chip; or to a chip module comprising a chip with data processing function in the user equipment, or to the user equipment.

Referring to fig. 4, a beam recovery apparatus 40 in an embodiment of the present invention is provided, including: an instruction information transmitting unit 401, a beam recovery request receiving unit 402, and a response information transmitting unit 403, wherein:

an indication information sending unit 401, configured to send indication information, where the indication information is used to determine at least one first TCI status, where the at least one first TCI status is retrieved from a second TCI status, and PCIs associated with the at least one first TCI status are the same;

a beam recovery request receiving unit 402 for receiving a beam recovery request;

a response message sending unit 403, configured to send a beam recovery response message corresponding to the beam recovery request.

In a specific implementation, the specific execution processes of the indication information sending unit 401, the beam recovery request receiving unit 402, and the response information sending unit 403 may refer to step S201 to step S203, which is not described herein again in this embodiment of the present invention.

In a specific implementation, the beam recovery apparatus 40 may correspond to a chip having a data processing function in a base station or a network-side device, such as a data signal processing chip; or the chip module with the data processing function in the base station or the network side equipment, or the base station or the network side equipment.

In a specific implementation, each module/unit included in each apparatus and product described in the foregoing embodiments may be a software module/unit, may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit.

For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated within the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.

An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the beam recovery request method provided in any of the above embodiments, or to perform the steps of the beam recovery method provided in any of the above embodiments.

The embodiment of the present invention further provides another communication apparatus, which includes a memory and a processor, where the memory stores a computer program executable on the processor, and when the processor executes the computer program, the communication apparatus executes the beam recovery request method provided in any of the above embodiments.

The embodiment of the present invention further provides another communication apparatus, which includes a memory and a processor, where the memory stores a computer program executable on the processor, and when the processor executes the computer program, the communication apparatus executes the beam recovery method provided in any of the above embodiments.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by instructing the relevant hardware through a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for requesting beam recovery, comprising:

receiving indication information, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed from a second TCI state, and the PCIs associated with the at least one first TCI state are the same;

measuring a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state, resulting in a first measurement result, the first measurement result being indicative of a signal quality of the beam monitoring reference signal;

and if the first measurement result meets a first condition, sending a beam recovery request.

2. The beam recovery request method of claim 1, further comprising:

receiving cell configuration information, the cell configuration information including the at least one second TCI status, each second TCI status being associated with a PCI, and the at least one second TCI status including the at least one first TCI status.

3. The beam recovery request method of claim 2, wherein the cell configuration information further comprises at least one of:

at least one beam monitoring reference signal, and each beam monitoring reference signal is associated with a PCI;

at least one candidate beam identifies a reference signal and each beam monitoring reference signal is associated with a PCI.

4. The beam recovery request method of claim 2, wherein the receiving the cell configuration information comprises: and receiving an RRC message, and acquiring the cell configuration information from the RRC message.

5. The beam recovery request method of claim 1, wherein the receiving indication information comprises: and receiving a first MAC CE message, and acquiring the indication information from the first MAC CE message.

6. The beam recovery request method of claim 1, further comprising:

measuring a specific candidate wave beam identification reference signal to obtain a second measurement result; wherein the second measurement result satisfies a second condition.

7. The beam recovery request method of claim 6 wherein the particular candidate beam identification reference signal comprises at least one of:

a candidate beam identification reference signal associated with the PCI associated with the at least one first TCI state;

the PCI-unassociated candidate beam identification reference signal associated with the at least one first TCI state.

8. The beam recovery request method of claim 1, wherein the beam recovery request comprises at least one of: an identity of the PCI associated with the at least one first TCI state, an index of an optimal candidate beam identification reference signal.

9. The beam recovery request method of claim 1, further comprising:

receiving the beam recovery response message, and performing beam recovery; the beam recovery response message corresponds to the beam recovery request.

10. The beam recovery request method according to claim 9, wherein the reception beam recovery response message includes any one of:

receiving a second MAC CE message indicating reactivation of one or more TCI states;

and receiving DCI signaling for scheduling new uplink data on the HARQ process corresponding to the transmission of the beam recovery request.

11. A method of beam recovery, comprising:

sending indication information, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed from a second TCI state, and the PCIs associated with the at least one first TCI state are the same;

receiving a beam recovery request;

and transmitting a beam recovery response message corresponding to the beam recovery request.

12. The beam recovery method of claim 11, further comprising:

sending cell configuration information; the cell configuration information includes the at least one second TCI state, each second TCI state is associated with a PCI, and the at least one second TCI state includes the at least one first TCI state.

13. The beam recovery method of claim 12, wherein the cell configuration information further comprises at least one of:

at least one candidate beam identifies a reference signal, and each beam monitoring reference signal is associated with a PCI.

14. The beam recovery method of claim 12, wherein the transmitting the cell configuration information comprises: and sending RRC message, wherein the RRC message carries the cell configuration information.

15. The beam recovery method of claim 11, wherein the transmitting the indication information comprises: and sending a first MAC CE message, wherein the first MAC CE message carries the indication information.

16. The beam recovery method of claim 11 wherein the beam recovery request comprises at least one of: an identification of the PCI associated with the at least one first TCI state, an index of an optimal candidate beam identification reference signal; the optimal candidate beam identification reference signal is selected from specific candidate beam identification reference signals.

17. The beam recovery method of claim 16 wherein the particular candidate beam identification reference signal comprises at least one of:

18. The beam recovery method of claim 11 wherein the transmitting of the beam recovery response message comprises at least one of:

transmitting a second MAC CE message indicating reactivation of one or more TCI states;

and sending DCI signaling, wherein the DCI signaling is used for scheduling new uplink data on the HARQ process occupied by sending the beam recovery request.

19. A beam recovery request apparatus, comprising:

the device comprises an indication information receiving unit and a processing unit, wherein the indication information is used for receiving indication information, the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed out of a second TCI state, and the PCI associated with the at least one first TCI state is the same;

a measurement unit, configured to measure a beam monitoring reference signal associated with the PCI associated with the at least one first TCI state, and obtain a first measurement result, where the first measurement result is used to indicate signal quality of the beam monitoring reference signal;

a transmitting unit, configured to transmit a beam recovery request when the first measurement result satisfies a first condition.

20. A beam recovery apparatus, comprising:

the device comprises an indication information sending unit, a first TCI state determination unit and a second TCI state determination unit, wherein the indication information is used for determining at least one first TCI state, the at least one first TCI state is indexed out of the second TCI state, and the PCI associated with the at least one first TCI state is the same;

a beam recovery request receiving unit for receiving a beam recovery request;

a response message transmitting unit for transmitting a beam recovery response message corresponding to the beam recovery request.

21. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, is configured to perform the steps of the beam recovery request method according to any one of claims 1 to 10 or the steps of the beam recovery method according to any one of claims 11 to 18.

22. A communication device comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the communication device performs the method of any of claims 1 to 10 when the processor executes the computer program.

23. A communication apparatus comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the communication apparatus executes the computer program to perform the method of any of claims 11 to 18.