CN110418357B - Communication method and device - Google Patents

Abstract

Embodiments of the present application provide a communication method and apparatus. The method includes: receiving first signaling from a network device, where the first signaling is MAC layer signaling or physical layer signaling, and the first signaling is used for updating the first reference signal set; according to the first signaling, updating the first reference signal set, where the first reference signal set is a reference signal set used for beam failure detection in the terminal physical layer. Because the delay of MAC layer signaling or physical layer signaling is small, after the terminal changes the serving beam, the first reference signal set can be quickly updated through the above-mentioned first signaling, which reduces the need to continue according to the previous first reference signal set. Beam failure detection time, thereby reducing the phenomenon of false detection as beam failure, reducing the number of communication interruptions, and improving communication quality.

Description

Communication method and device

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and apparatus.

Background technique

In order to ensure the effective transmission of services, the cell will introduce beam forming technology, that is, the base station concentrates the energy of the signal in a required direction and sends the signal to the terminal through the beam in this direction, thereby improving the demodulation of the terminal. Signal-to-noise ratio to improve user experience at the cell edge. When the terminal communicates with the base station through the beam, the terminal performs beam failure detection, that is, the terminal detects the quality of the serving beam according to the beam failure detection reference signal (BFD RS). When the quality of all serving beams of the terminal fails to meet the conditions for several consecutive times, it indicates that a beam failure phenomenon has occurred. Then, send a beam failure recovery request to the base station, and inform the base station of the candidate beam selected by the terminal through the request, so that the base station can use the candidate beam as the service beam for communication between the base station and the terminal. The base station then indicates the new service beam to the terminal, so that the base station and the terminal use the new service beam to communicate, and then the base station configures the terminal with a beam failure detection reference signal that matches the new service beam, so that the terminal can perform beam failure detection.

However, at present, the base station configures the beam failure detection reference signal to the terminal through Radio Resource Control (RRC) signaling. The delay of the RRC signaling is at least 5ms, and the time for the terminal to change the service beam is 1 to 2ms. After switching to the new serving beam and before receiving the RRC signaling, the beam failure detection will still be performed according to the previous beam failure detection reference signal, so that the beam failure phenomenon is falsely detected, and the communication is interrupted, affecting the communication quality.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a communication method and apparatus, which are used to reduce the number of false detections as a beam failure phenomenon, reduce the number of communication interruptions, and improve communication quality.

In a first aspect, an embodiment of the present application provides a communication method, including: first receiving a first signaling from a network device, where the first signaling is a media access control (Media Access Control, MAC) layer signaling or a physical layer signaling, where the first signaling is used to update the first reference signal set. Then, according to the first signaling, the first reference signal set is updated, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

Because the delay of MAC layer signaling or physical layer signaling is small, after the terminal changes the serving beam, the first reference signal set can be quickly updated through the above-mentioned first signaling, which reduces the need to continue according to the previous first reference signal set. Beam failure detection time, thereby reducing the phenomenon of false detection as beam failure, reducing the number of communication interruptions, and improving communication quality.

In a possible implementation manner, the first signaling includes: identifiers of one or more reference signals.

In a possible implementation manner, the first signaling is used to instruct: the network device sends the one or more reference signal beams to the terminal and sends the physical downlink control channel (Physical Downlink Control Channel, PDCCH) beam Beams are quasi-co-located. Since the beam for transmitting the reference signal in the first reference signal set is quasi-colocated with the beam for transmitting the PDCCH, the reference signal transmitted by the beam quasi-colocated with the beam for transmitting the PDCCH can be used as the reference signal in the first reference signal set.

In a possible implementation manner, the first signaling includes a transmission configuration number status indication.

Therefore, the existing MAC layer signaling can be used to: update the reference signal set used for beam failure detection in the physical layer of the terminal, which is equivalent to the existing signaling implicitly instructing to update the above reference signal set, without the need for the terminal and the network. Change the signaling content transmitted between devices.

In a possible implementation manner, before the updating of the first reference signal set according to the first signaling, second signaling is further received from the network device, and the second signaling is used for Instruct to update the first reference signal set according to the identifiers of one or more reference signals included in the first signaling, and the second signaling is MAC layer signaling or physical layer signaling.

Therefore, display signaling (ie, the second signaling) is added to indicate that the identifier of the reference signal in the existing signaling (ie, the first signaling) is used to update the reference signal used for beam failure detection in the physical layer of the terminal. Set, the newly added explicit signaling is MAC layer signaling or physical layer signaling. Since the delay of MAC layer signaling or physical layer signaling is small, the terminal can quickly update the physical layer for beam failure detection. Therefore, the phenomenon of false detection as beam failure is reduced, the number of communication interruptions is reduced, and the communication quality is improved. In addition, since the newly added signaling is an indication signaling and does not need to carry the identifier of the reference signal, the network overhead of the newly added signaling is low.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals.

Therefore, in this embodiment, a new MAC layer signaling or physical layer signaling is added, and the newly added signaling carries the identifier of the reference signal, and the newly added signaling indicates that the terminal is updated according to the identifier of the reference signal carried by it. For the reference signal set used for beam failure detection in the physical layer, since the newly added signaling has less delay, the terminal can quickly update the reference signal set used for beam failure detection in the physical layer, thereby reducing the occurrence of false detections. The phenomenon of beam failure reduces the number of communication interruptions and improves the communication quality.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal. The candidate beam is often an adjacent beam of the serving beam, so the first reference raw signal set can be updated according to the reference signal of the candidate beam, and the updated first reference signal set can reduce the number of falsely detected beam failures.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signal logo.

Therefore, in this embodiment, a new MAC layer signaling or physical layer signaling is added, and the newly added signaling instructs to update the reference signal set used for beam failure detection in the physical layer of the terminal according to the reference signal set of the candidate beam. Therefore, , the terminal can quickly update the reference signal set used for beam failure detection in the physical layer, thereby reducing the phenomenon of false detection of beam failure, reducing the number of communication interruptions, and improving communication quality. In addition, since the newly added signaling is an indication signaling and does not need to carry the identifier of the reference signal, the network overhead of the newly added signaling is low.

In a possible implementation manner, the updating the first reference signal set according to the first signaling includes:

The identified portion of the one or more reference signals is added to the first set of reference signals. or,

All of the identities of the one or more reference signals are added to the first set of reference signals. or,

Part or all of the identifiers of the reference signals in the first reference signal set is replaced with the identified part of the one or more reference signals. or,

Part or all of the identifiers of the reference signals in the first reference signal set are replaced by all of the identifiers of the one or more reference signals.

In a possible implementation manner, the method further updates a second reference signal set according to the first signaling, where the second reference signal set is used in the radio resource control (Radio Resource Control, RRC) layer of the terminal Reference signal set for beam failure detection.

In a second aspect, an embodiment of the present application provides a communication method, including: generating a third signaling, where the third signaling is MAC layer signaling or physical layer signaling;

Send the third signaling to the terminal, where the third signaling is used for the terminal to update the first reference signal set, where the first reference signal set is the reference signal used for beam failure detection in the physical layer of the terminal gather.

Since the delay of MAC layer signaling or physical layer signaling is small, after the terminal changes the serving beam, the first reference signal set can be quickly updated through the third signaling, which reduces the need to continue according to the previous first reference signal set. Beam failure detection time, thereby reducing the phenomenon of false detection as beam failure, reducing the number of communication interruptions, and improving communication quality.

In a possible implementation manner, before sending the third signaling to the terminal, a fourth signaling is also sent to the terminal, where the fourth signaling includes identifiers of one or more reference signals, so The fourth signaling is MAC layer signaling or physical layer signaling.

The third signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals in the fourth signaling.

In a possible implementation manner, the fourth signaling is used to indicate that: the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

Therefore, new display signaling (ie, the fourth signaling) is added to indicate that the identifier of the reference signal in the existing signaling (ie, the third signaling) is used to update the reference signal used for beam failure detection in the physical layer of the terminal Set, the newly added explicit signaling is MAC layer signaling or physical layer signaling. Since the delay of MAC layer signaling or physical layer signaling is small, the terminal can quickly update the physical layer for beam failure detection. Therefore, the phenomenon of false detection as beam failure is reduced, the number of communication interruptions is reduced, and the communication quality is improved. In addition, since the newly added signaling is an indication signaling and does not need to carry the identifier of the reference signal, the network overhead of the newly added signaling is low.

In a possible implementation manner, the third signaling further includes: identifiers of one or more reference signals, and the third signaling is used to instruct to update the reference signal according to the identifiers of the one or more reference signals The first reference signal set. Therefore, in this embodiment, a new MAC layer signaling or physical layer signaling is added, and the newly added signaling carries the identifier of the reference signal, and the newly added signaling indicates that the terminal is updated according to the identifier of the reference signal carried by it. For the reference signal set used for beam failure detection in the physical layer, since the newly added signaling has less delay, the terminal can quickly update the reference signal set used for beam failure detection in the physical layer, thereby reducing the occurrence of false detections. The phenomenon of beam failure reduces the number of communication interruptions and improves the communication quality.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal. The candidate beam is often an adjacent beam of the serving beam, so the first reference raw signal set can be updated according to the reference signal of the candidate beam, and the updated first reference signal set can reduce the number of falsely detected beam failures.

In a possible implementation manner, the third signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signals logo.

Therefore, in this embodiment, a new MAC layer signaling or physical layer signaling is added, and the newly added signaling instructs to update the reference signal set used for beam failure detection in the physical layer of the terminal according to the reference signal set of the candidate beam. Therefore, , the terminal can quickly update the reference signal set used for beam failure detection in the physical layer, thereby reducing the phenomenon of false detection of beam failure, reducing the number of communication interruptions, and improving communication quality. In addition, since the newly added signaling is an indication signaling and does not need to carry the identifier of the reference signal, the network overhead of the newly added signaling is low.

In combination with any one or more of the above, or one or more possible implementations of any one or more of the above, in a third aspect, an embodiment of the present application provides a communication method, including:

The terminal receives an indication, where the indication is used to instruct the terminal to update a first reference signal set according to the indication, wherein the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal side;

The terminal updates the first reference signal set.

Therefore, the terminal can quickly update the first reference signal set through the above-mentioned instruction, which reduces the time for continuing beam failure detection according to the previous first reference signal set, thereby reducing the phenomenon that the false detection is a beam failure, and reducing the occurrence of communication interruption. times, improving the communication quality.

In a fourth aspect, an embodiment of the present application provides a communication method, including:

The network device generates an indication, where the indication is used to instruct the terminal to update a first reference signal set according to the indication, where the first reference signal set is a reference signal set used for beam failure detection in the terminal-side physical layer ;

The network device sends the indication.

Therefore, the terminal updates the first reference signal set through the above-mentioned instruction, which reduces the time for continuing to perform beam failure detection according to the previous first reference signal set, thereby reducing the phenomenon that the false detection is a beam failure, and reducing the number of communication interruptions. Communication quality is improved.

In a possible implementation manner of the third aspect and/or the fourth aspect, the indication is a transmission configuration index state indication (Transmission Configuration Index State Indication, TCI StateIndication). Therefore, the existing TCI State Indication can be used to: update the reference signal set used for beam failure detection at the physical layer of the terminal, which is equivalent to the existing TCI State Indication implicitly instructing to update the above reference signal set, without the need for the terminal and the network. Change the signaling content transmitted between devices.

In a possible implementation manner of the third aspect and/or the fourth aspect, the indication is further used to indicate the identifier of the reference signal.

In a possible implementation manner of the third aspect and/or the fourth aspect, the indication further includes an identifier of the reference signal.

In a possible implementation manner of the third aspect and/or the fourth aspect, the indication is underlying signaling.

Since the indication is the bottom layer signaling, the delay of the bottom layer signaling is small, and the terminal can quickly update the first reference signal set through the above-mentioned instruction.

In a possible implementation manner of the third aspect and/or the fourth aspect, the indication is the first signaling.

In a possible implementation manner of the third aspect and/or the fourth aspect, the method further includes the terminal receiving the second signaling.

In a possible implementation manner of the third aspect and/or the fourth aspect, the method further includes the network device sending the second signaling.

In a fifth aspect, an embodiment of the present application provides a communication device, including: a receiving module and a processing module.

The receiving module is configured to receive first signaling from a network device, where the first signaling is MAC layer signaling or physical layer signaling, and the first signaling is used to update the first reference signal set.

The processing module is configured to update the first reference signal set according to the first signaling, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

The receiving module may be a receiver, and the processing module may be a processor.

In a possible implementation manner, the first signaling includes: identifiers of one or more reference signals.

In a possible implementation manner, the first signaling is used to indicate that the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the first signaling includes a transmission configuration number status indication.

In a possible implementation manner, the receiving module is further configured to receive second signaling from the network device before the processing module updates the first reference signal set according to the first signaling , the second signaling is used to instruct to update the first reference signal set according to the identifiers of one or more reference signals included in the first signaling, where the second signaling is MAC layer signaling or physical layer signaling signaling.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signal logo.

In a possible implementation manner, the processing module is specifically used for:

adding the identified portion of the one or more reference signals to the first set of reference signals; or,

adding all of the identifiers of the one or more reference signals to the first set of reference signals; or,

replacing part or all of the identifiers of the reference signals in the first reference signal set with the identified part of the one or more reference signals; or,

Part or all of the identifiers of the reference signals in the first reference signal set are replaced by all of the identifiers of the one or more reference signals.

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

According to the first signaling, a second reference signal set is updated, where the second reference signal set is a reference signal set used for beam failure detection in the RRC layer of the terminal.

In a possible implementation, the receiving module is configured to receive an indication, where the indication is used to instruct the terminal to update a first reference signal set according to the indication, where the first reference signal set is the terminal side The set of reference signals used for beam failure detection in the physical layer.

The processing module is configured to update the first reference signal set.

In a possible implementation manner, the receiving module is further configured to receive the second signaling.

In a sixth aspect, an embodiment of the present application provides a communication device, including: a processing module and a sending module.

The processing module is configured to generate third signaling, where the third signaling is MAC layer signaling or physical layer signaling.

The sending module is configured to send the third signaling to the terminal, where the third signaling is used for the terminal to update the first reference signal set, and the first reference signal set is used in the physical layer of the terminal. Reference signal set for beam failure detection.

The processing module may be a processor, and the sending module may be a transmitter.

In a possible implementation manner, the sending module is further configured to send fourth signaling to the terminal before sending the third signaling to the terminal, where the fourth signaling includes one or more reference The identifier of the signal, the fourth signaling is MAC layer signaling or physical layer signaling;

The third signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals in the fourth signaling.

In a possible implementation manner, the fourth signaling is used to indicate that: the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the third signaling further includes: identifiers of one or more reference signals, and the third signaling is used to instruct to update the reference signal according to the identifiers of the one or more reference signals The first reference signal set.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the third signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signal logo.

In a possible implementation manner, the processing module is configured to generate an indication, where the indication is used to instruct the terminal to update a first reference signal set according to the indication, wherein the first reference signal set is the terminal side The set of reference signals used for beam failure detection in the physical layer.

The sending module is configured to send the indication.

In a possible implementation manner, the sending module is further configured to send the fourth signaling.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, including: an interface and a processor, where the interface is coupled to the processor.

the processor, configured to receive first signaling from the network device through the interface, where the first signaling is MAC layer signaling or physical layer signaling, and the first signaling is used to update the first reference signal set; according to the first signaling, update the first reference signal set, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

In a possible implementation manner, the first signaling includes: identifiers of one or more reference signals.

In a possible implementation manner, the first signaling is used to indicate that the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the first signaling includes a transmission configuration number status indication.

In a possible implementation manner, the processor is further configured to receive second signaling from the network device through the interface before updating the first reference signal set according to the first signaling , the second signaling is used to instruct to update the first reference signal set according to the identifiers of one or more reference signals included in the first signaling, where the second signaling is MAC layer signaling or physical layer signaling signaling.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signals of logo.

In a possible implementation manner, the processor is specifically used for:

adding the identified portion of the one or more reference signals to the first set of reference signals; or,

adding all of the identifiers of the one or more reference signals to the first set of reference signals; or,

replacing part or all of the identifiers of the reference signals in the first reference signal set with the identified part of the one or more reference signals; or,

Part or all of the identifiers of the reference signals in the first reference signal set are replaced by all of the identifiers of the one or more reference signals.

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

According to the first signaling, a second reference signal set is updated, where the second reference signal set is a reference signal set used for beam failure detection in the RRC layer of the terminal.

In a possible implementation manner, the processor is configured to receive an indication through the interface, and update the first reference signal set. The indication is used to instruct the terminal to update the first reference signal set according to the indication, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal side.

In a possible implementation manner, the processor is further configured to receive the second signaling through the interface.

The above-mentioned communication device may be a terminal or a chip; the memory and the processor may be integrated on the same chip, or may be separately provided on different chips.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, including: an interface and a processor, where the interface is coupled to the processor.

The processor is configured to generate third signaling, where the third signaling is MAC layer signaling or physical layer signaling; and send the third signaling to the terminal through the interface, where the third signaling is Let the terminal update a first reference signal set, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

In a possible implementation manner, the processor is further configured to send fourth signaling to the terminal through the interface before sending the third signaling to the terminal through the interface, and the first signaling Four signaling includes the identifier of one or more reference signals, and the fourth signaling is MAC layer signaling or physical layer signaling;

The third signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals in the fourth signaling.

In a possible implementation manner, the fourth signaling is used to indicate that: the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the third signaling further includes: identifiers of one or more reference signals, and the third signaling is used to instruct to update the reference signal according to the identifiers of the one or more reference signals The first reference signal set.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the third signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signals logo.

In a possible implementation, the processor is configured to generate an indication and send the indication through the interface. The indication is used to instruct the terminal to update the first reference signal set according to the indication, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal side.

In a possible implementation manner, the processor is further configured to send the fourth signaling through the interface.

The above-mentioned communication device may be a network device or a chip; the memory and the processor may be integrated on the same chip, or may be separately provided on different chips.

In a ninth aspect, an embodiment of the present application provides a communication apparatus, including: a memory, a processor, and a receiver, where the memory, the receiver, and the processor are coupled.

the memory for storing program instructions;

The processor is used to invoke program instructions in the memory to execute:

The receiver receives first signaling from the network device, where the first signaling is MAC layer signaling or physical layer signaling, and the first signaling is used to update the first reference signal set; according to the first signaling A signaling to update the first reference signal set, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

In a possible implementation manner, the first signaling includes: identifiers of one or more reference signals.

In a possible implementation manner, the first signaling is used to indicate that the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the first signaling includes a transmission configuration number status indication.

In a possible implementation manner, the processor is further configured to receive a second signal from the network device through the receiver before updating the first reference signal set according to the first signaling. command, the second signaling is used to instruct to update the first reference signal set according to the identifiers of one or more reference signals included in the first signaling, and the second signaling is MAC layer signaling or physical layer signaling.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signal logo.

In a possible implementation manner, the processor is specifically used for:

adding the identified portion of the one or more reference signals to the first set of reference signals; or,

adding all of the identifiers of the one or more reference signals to the first set of reference signals; or,

replacing part or all of the identifiers of the reference signals in the first reference signal set with the identified part of the one or more reference signals; or,

Part or all of the identifiers of the reference signals in the first reference signal set are replaced by all of the identifiers of the one or more reference signals.

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

According to the first signaling, a second reference signal set is updated, where the second reference signal set is a reference signal set used for beam failure detection in the RRC layer of the terminal radio resource control.

In a possible implementation manner, the processor is configured to receive an indication through a receiver and update the first reference signal set. The indication is used to instruct the terminal to update the first reference signal set according to the indication, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal side.

In a possible implementation manner, the processor is further configured to receive the second signaling through the receiver.

In a tenth aspect, an embodiment of the present application provides a communication apparatus, including: a memory, a processor, and a transmitter, where the memory, the transmitter, and the processor are coupled.

the memory for storing program instructions;

The processor is used to invoke program instructions in the memory to execute:

generating third signaling, where the third signaling is MAC layer signaling or physical layer signaling; and sending the third signaling to the terminal through the transmitter, where the third signaling is used for the terminal A first reference signal set is updated, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

In a possible implementation manner, the processor is further configured to send the fourth signaling to the terminal through the transmitter before sending the third signaling to the terminal through the transmitter, so that the The fourth signaling includes identifiers of one or more reference signals, and the fourth signaling is MAC layer signaling or physical layer signaling;

The third signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals in the fourth signaling.

In a possible implementation manner, the fourth signaling is used to indicate that: the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the third signaling further includes: identifiers of one or more reference signals, and the third signaling is used to instruct to update the reference signal according to the identifiers of the one or more reference signals The first reference signal set.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the third signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signals logo.

In a possible implementation, the processor is configured to generate an indication and send the indication through a transmitter. The indication is used to instruct the terminal to update the first reference signal set according to the indication, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal side.

In a possible implementation manner, the processor is further configured to send the fourth signaling through the transmitter.

In an eleventh aspect, an embodiment of the present application provides a processor, where the processor includes:

At least one circuit is configured to receive first signaling from a network device, where the first signaling is MAC layer signaling or physical layer signaling, and the first signaling is used to update the first reference signal set.

At least one circuit is configured to update the first reference signal set according to the first signaling, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal.

In a possible implementation manner, the first signaling includes: identifiers of one or more reference signals.

In a possible implementation manner, the first signaling is used to indicate that the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the first signaling includes a transmission configuration number status indication.

In a possible implementation manner, at least one circuit is further configured to receive second signaling from the network device, where the second signaling is used to indicate one or more references included according to the first signaling The identifier of the signal updates the first reference signal set, and the second signaling is MAC layer signaling or physical layer signaling.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the first signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signal logo.

In a possible implementation, at least one circuit is specifically used to:

adding the identified portion of the one or more reference signals to the first set of reference signals; or,

adding all of the identifiers of the one or more reference signals to the first set of reference signals; or,

replacing part or all of the identifiers of the reference signals in the first reference signal set with the identified part of the one or more reference signals; or,

Part or all of the identifiers of the reference signals in the first reference signal set are replaced by all of the identifiers of the one or more reference signals.

In one possible implementation, at least one circuit is also used to:

According to the first signaling, a second reference signal set is updated, where the second reference signal set is a reference signal set used for beam failure detection in the RRC layer of the terminal.

In a possible implementation manner, at least one circuit is configured to receive an indication, where the indication is used to instruct the terminal to update a first reference signal set according to the indication, where the first reference signal set is the terminal-side physical The set of reference signals in the layer used for beam failure detection.

at least one circuit for updating the first set of reference signals.

In a possible implementation manner, at least one circuit is further configured to receive the second signaling.

The above-mentioned processor may be a chip.

In a possible implementation manner of the fifth aspect, the seventh aspect, the ninth aspect, and the eleventh aspect, the indication is the first signaling.

In a twelfth aspect, an embodiment of the present application provides a processor, where the processor includes:

At least one circuit is configured to generate third signaling, where the third signaling is MAC layer signaling or physical layer signaling.

At least one circuit is configured to send the third signaling to the terminal, where the third signaling is used for the terminal to update the first reference signal set, and the first reference signal set is used in the physical layer of the terminal. The set of reference signals for beam failure detection.

In a possible implementation manner, at least one circuit is further configured to send fourth signaling to the terminal, where the fourth signaling includes identifiers of one or more reference signals, and the fourth signaling is MAC layer signaling or physical layer signaling;

The third signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals in the fourth signaling.

In a possible implementation manner, the fourth signaling is used to indicate that: the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the PDCCH is sent.

In a possible implementation manner, the third signaling further includes: identifiers of one or more reference signals, and the third signaling is used to instruct to update the reference signal according to the identifiers of the one or more reference signals The first reference signal set.

In a possible implementation manner, the reference signal is a reference signal of a candidate beam of the terminal.

In a possible implementation manner, the third signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, where the reference signal set of the candidate beam includes one or more reference signal logo.

In a possible implementation manner, at least one circuit is configured to generate an indication, and the indication is used to instruct the terminal to update the first reference signal set according to the indication, wherein the first reference signal set is the terminal-side physical The set of reference signals in the layer used for beam failure detection.

at least one circuit for sending the indication.

In a possible implementation manner, at least one circuit is further configured to send the fourth signaling.

The above-mentioned processor may be a chip.

In a possible implementation manner of the sixth aspect, the eighth aspect, the tenth aspect, and the twelfth aspect, the indication is the third signaling.

In a possible implementation manner of at least one of the first to twelfth aspects, the identifier of the reference signal is an identifier of a non-zero power channel state information reference signal resource.

In a possible implementation manner of at least one of the foregoing first to twelfth aspects, the MAC layer signaling is a MAC Control Element (Control Element, CE).

In a possible implementation manner of at least one of the fifth aspect to the twelfth aspect, the indication is a TCI State Indication.

In a possible implementation manner of at least one of the fifth aspect to the twelfth aspect, the indication is further used to indicate the identifier of the reference signal.

In a possible implementation manner of at least one of the fifth aspect to the twelfth aspect, the indication further includes an identifier of the reference signal.

In a possible implementation manner of at least one of the fifth aspect to the twelfth aspect, the indication is underlying signaling.

In a thirteenth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program includes at least one piece of code, and the at least one piece of code can be executed by a computer to control the computer The communication method described in the first aspect or the second aspect or the third aspect or the fourth aspect is performed.

In a fourteenth aspect, an embodiment of the present application provides a computer program, which, when the computer program is executed by a computer, is used to execute the communication method described in the first aspect or the second aspect or the third aspect or the fourth aspect.

The program may be stored in whole or in part on a storage medium packaged with the processor, or may be stored in part or in part on a memory not packaged with the processor.

Description of drawings

1 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a protocol stack of a network device provided by an embodiment of the present application;

3 is a flowchart of a communication method provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication device provided by another embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication device provided by another embodiment of the present application;

FIG. 7 is a schematic structural diagram of a communication device provided by another embodiment of the present application;

FIG. 8 is a schematic structural diagram of a communication device provided by another embodiment of the present application;

FIG. 9 is a schematic structural diagram of a communication apparatus according to another embodiment of the present application.

Detailed ways

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. Wherein, the terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present application and the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that data used in this way can be interchanged under appropriate circumstances, for example: "third signaling" in the claims is "first signaling" in some cases, and "second signaling" in other cases ".

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 1 , the communication system includes a network device and a terminal.

Network equipment: Also known as Radio Access Network (RAN) equipment, it is a device that accesses terminals to a wireless network, and can be an evolved base station (Evolutional) in Long Term Evolution (LTE). Node B, eNB or eNodeB), or a relay station or an access point, or a base station in a 5G network, such as a transmission and reception point (Transmission and Reception Point, TRP), and a controller, which are not limited herein. In a possible manner, the access network device may be a base station (eg gNB) with a CU and DU separation architecture, as shown in FIG. 2 , which is a schematic diagram of a protocol stack of a network device according to an embodiment of the present application. The RAN equipment can be connected to the core network equipment (for example, it can be the core network of LTE, or the core network of 5G, etc.). CU and DU can be understood as the division of the base station from the perspective of logical functions. CUs and DUs can be physically separate or deployed together. Multiple DUs can share one CU. One DU can also be connected to multiple CUs (not shown in the figure). The CU and the DU can be connected through an interface, such as an F1 interface. CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP) and Packet Data Convergence Protocol (PDCP) layer are set in the CU, while the wireless link The functions of the radio link control (radiolink control, RLC), the media access control (Media Access Control, MAC) layer, and the physical (physical, PHY) layer are set in the DU. It can be understood that the division of CU and DU processing functions according to this protocol layer is only an example, and may also be divided in other ways. For example, a CU or DU may be divided into functions with more protocol layers. For example, a CU or DU can also be divided into partial processing functions with a protocol layer. In one design, some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU. In another design, the functions of the CU or DU may also be divided according to service types or other system requirements. For example, according to the delay, the functions whose processing time needs to meet the delay requirements are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU. In another design, the CU may also have one or more functions of the core network. One or more CUs can be set centrally or separately. For example, the CU can be set on the network side to facilitate centralized management. The DU can have multiple radio functions, or the radio functions can be set farther away.

The functions of the CU can be implemented by one entity or by different entities. For example, the functions of the CU may be further segmented, for example, the control plane (CP) and the user plane (UP) may be separated, that is, the CU control plane (CU-CP) and the CU user plane (CU-UP). For example, the CU-CP and the CU-UP may be implemented by different functional entities, and the CU-CP and the CU-UP may be coupled with the DU to jointly complete the functions of the base station. In a possible way, the CU-CP is responsible for the control plane function, mainly including RRC and PDCP-C. PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, and data transmission. CU-UP is responsible for user plane functions, mainly including SDAP and PDCP-U. SDAP is mainly responsible for processing the data of the core network and mapping the data flow to the bearer. PDCP-U is mainly responsible for data plane encryption and decryption, integrity protection, header compression, serial number maintenance, data transmission, etc. The CU-CP and CU-UP are connected through the E1 interface. CU-CP represents that the gNB is connected to the core network through the Ng interface. Connect via F1-C (control plane) and DU. CU-UP is connected through F1-U (user plane) and DU. Of course, there is also a possible implementation that PDCP-C is also in CU-UP.

Terminal: It can be a wireless terminal or a wired terminal. A wireless terminal can refer to a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; it can also be deployed on water (such as ships). etc.); can also be deployed in the air (eg on airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobilephone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal, an augmented reality (Augmented Reality, AR) terminal, an industrial control (industrial control) terminal. wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, smart Wireless terminals in a city (smart city), wireless terminals in a smart home (smart home), etc., are not limited here. It can be understood that, in this embodiment of the present application, the terminal may also be referred to as user equipment (user equipment, UE).

Each protocol layer of the wireless network is explained below.

RRC layer: used to perform broadcast, paging, RRC connection establishment, radio bearer control, mobility management, terminal measurement reporting control, etc.

PDCP layer: It can perform services such as security, header compression, and encryption. The PDCP layer can correspond to multiple PDCP entities, and each PDCP entity carries the data of one radio bearer (Radio Bear, RB).

RLC layer: performs services such as segmentation, reassembly, and retransmission. The RLC layer can correspond to multiple RLC entities, and each RLC entity provides services for the corresponding PDCP entity.

MAC layer: Provides data transmission services for services on logical channels, and performs acknowledgment and negation services such as scheduling, Hybrid Automatic Repeat reQuest (HARQ).

PHY layer: encodes and transmits the data passed down from the MAC layer.

In this embodiment of the present application, the English of the beam may be written as beam. The beams may include transmit beams and receive beams. The transmitting beam may refer to the distribution of signal strength in different directions in space after the signal is transmitted by the antenna, and the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space. It can be understood that one or more antenna ports of a beam can also be regarded as an antenna port set, that is, an antenna port set includes at least one antenna port.

Specifically, a beam may refer to a precoding vector with a certain energy transmission directivity, and the precoding vector can be identified by identification information. The signal after precoding processing has better received power, such as satisfying the signal-to-noise ratio of receiving demodulation, etc., while in other spatial positions, the power of receiving the signal after precoding processing by the precoding vector is low, which does not satisfy Receive demodulation signal-to-noise ratio. Different communication devices may have different precoding vectors, that is, corresponding to different beams. According to the configuration or capability of the communication device, a communication device may use one or more of multiple different precoding vectors at the same time, that is, at the same time. One beam or multiple beams can be formed. The beams can be understood as space resources. The beam may be marked by an identifier, and optionally, the identifier may correspond to a resource identifier (identity, ID) configured for the user, for example, the identifier may correspond to a configured channel status information reference signal (Channel status information Reference Signal, CSI-RS) ID or resource; it may also be the ID or resource of a correspondingly configured uplink sounding reference signal (Sounding Reference Signal, SRS). Or, optionally, the identification can also be identification information displayed or implicitly carried by a signal or channel borne by a beam, for example, the identification includes but is not limited to a synchronization signal sent through a beam or a broadcast channel indicating the beam's Identification, including but not limited to a synchronization signal block (Synchronization Signal block, SS block) sent through the beam indicating the identification of the beam (for example, SS block index), wherein the SS block (SSB) at least includes the primary synchronization signal (PSS) and /or Secondary Synchronization Signal (SSS) and/or Broadcast Channel (PBCH). The CSI-RS may be used to indicate the beam direction, and the CSI-RS may be used to measure signal strength and/or signal quality, and the like. The SRS can also be used to indicate the beam direction, and the SRS can be used for uplink synchronization, uplink beam management, and so on.

FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application. As shown in FIG. 3 , the method of this embodiment may include:

Optionally, in S301, the network device determines that the service beam of the terminal changes.

S302. The network device generates first signaling.

S303. The network device sends the first signaling to the terminal.

In this embodiment, the network device generates the first signaling, and then sends the first signaling to the terminal, and accordingly, the terminal receives the first signaling from the network device. Wherein, the first signaling in this embodiment is MAC layer signaling, or the first signaling is physical layer signaling. Optionally, the MAC layer signaling may be MAC CE.

Optionally, the network device may generate the first signaling after the service beam of the terminal changes, and then send the first signaling to the terminal, where the service beam of the terminal refers to the beam used by the terminal to communicate with the network device. . Wherein, for the network device to determine that the service beam of the terminal has changed, reference may be made to the relevant description in the prior art, which will not be repeated here.

S304. The terminal updates the first reference signal set according to the first signaling.

In this embodiment, the first signaling can be used to update the first reference signal set. Therefore, after receiving the first signaling, the terminal updates the first reference signal set according to the first signaling. The first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal. The reference signal set used for beam failure detection in the physical layer of the terminal may be configured by the RRC layer and/or the MAC layer of the terminal to the physical layer. Therefore, in this embodiment, the set of reference signals used for beam failure detection configured before the RRC and/or the MAC layer to the physical layer can be updated through the first signaling. Then, the terminal can perform beam failure detection according to the updated first reference signal set, so as to avoid the phenomenon of beam failure erroneous detection.

The first reference signal set includes identifiers of one or more reference signals, and the identifiers of the reference signals in the first reference signal set include at least one item: an SSB identifier and a CSI-RS identifier. The identifier of the SSB may be a time index (time index). The reference signals used for beam failure detection in the first reference signal set may be SSB and/or CSI-RS.

In one case, the first signaling itself may instruct to update the first reference signal set, and accordingly, the terminal updates the first reference signal set according to the instruction of the first signaling. The first signaling may be newly added signaling, such as newly added MAC layer signaling or newly added physical layer signaling.

In another case, the first signaling itself does not instruct to update the first reference signal set. The first signaling is a trigger condition for the terminal to update the first reference signal set. As long as the terminal receives the first signaling, it will update the first reference signal set. A set of reference signals. The first signaling may be existing signaling, and the first signaling may be, for example, existing signaling including a transmission configuration number status indication TCI State indication.

Optionally, in some embodiments, this embodiment may further perform the following S305.

S305. The terminal updates the second reference signal set according to the first signaling.

In this embodiment, after receiving the first signaling, the terminal may also update the second reference signal set according to the first signaling. The second reference signal set is a reference signal set used for beam failure detection in the RRC layer of the terminal. The reference signal set used for beam failure detection in the RRC layer of the terminal may be configured by the network device to the RRC layer of the terminal through RRC layer signaling. In some embodiments, the first set of reference signals is a subset of the second set of reference signals.

In other embodiments, after receiving the first signaling, the terminal does not perform S304, that is, does not update the second reference signal set according to the first signaling. It can also be considered that the terminal will update the second reference signal set only after receiving the RRC signaling.

In some embodiments, the first reference signal set may be represented by q ₀ , and the second reference signal set may be represented by q ₁ .

In the communication method provided by this embodiment, after the terminal receives the first signaling from the network device, the terminal updates the first reference signal set according to the first signaling, and the first signaling is MAC layer signaling or physical layer signaling. Because the delay of MAC layer signaling or physical layer signaling is small, after the terminal changes the serving beam, the first reference signal set can be quickly updated through the above-mentioned first signaling, which reduces the need to continue according to the previous first reference signal set. Beam failure detection time, thereby reducing the phenomenon of false detection as beam failure, reducing the number of communication interruptions, and improving communication quality.

In some embodiments, the first signaling includes: identification of one or more reference signals. Correspondingly, when the terminal updates the first reference signal set according to the first signaling, the specific implementation process may be: the terminal updates the first reference signal set according to the identifiers of one or more reference signals included in the first signaling. .

Optionally, the network device in this embodiment may also send second signaling to the terminal, where the second signaling is used to instruct the first reference to be updated according to the identifiers of one or more reference signals included in the first signaling. A signal set, where the second signaling is MAC layer signaling or physical layer signaling. Correspondingly, the terminal receives the second signaling from the network device, determines according to the second signaling that the first reference signal set of the terminal can be updated according to the first signaling, and then determines according to one or more reference signals in the first signaling. The identity of the update the first reference signal set.

It should be noted that, in some embodiments, the above-mentioned first signaling may be referred to as third signaling or fourth signaling. In some embodiments, the above-mentioned second signaling may be referred to as third signaling.

The process of updating the first reference signal set by the terminal may include the following ways:

In the first manner, the terminal adds all the identifiers of the one or more reference signals to the first reference signal set. For example: if the first reference signal set includes the identifiers of two reference signals at most, the first reference signal set already includes the identifier of one reference signal before the update, and the first signaling includes the identifier of one reference signal, then the terminal The identification of the reference signal in the first signaling may be added to the first reference signal set.

In the second manner, the terminal adds the identified part of the one or more reference signals to the first reference signal set. For example: if the first reference signal set includes at most two reference signal identifiers, the first reference signal set already includes one reference signal identifier before the update, and the first signaling includes two reference signal identifiers, then the terminal The identifier of one reference signal in the first signaling may be added to the first reference signal set.

In a third manner, the terminal replaces all the identifiers of the one or more reference signals with the identifiers of the reference signals in the first reference signal set. For example: if the first reference signal set includes at most two reference signal identifiers, the first reference signal set already includes two reference signal identifiers before the update, and the first signaling includes two reference signal identifiers, then the terminal The identifiers of the two reference signals in the first signaling may be replaced by the identifiers of the two reference signals in the first reference signal set.

In the fourth manner, the terminal replaces the part of the identifier of the one or more reference signals with the identifier of the reference signal in the first reference signal set. For example: if the first reference signal set includes at most two reference signal identifiers, the first reference signal set already includes two reference signal identifiers before the update, and the first signaling includes three reference signal identifiers, then the terminal The identifiers of the two reference signals in the first signaling may be replaced by the identifiers of the two reference signals in the first reference signal set.

In some embodiments, the above manners can also be implemented in combination with each other. For example, if the first reference signal set includes identifiers of two reference signals at most, the first reference signal set already includes the identifier of one reference signal before the update, and The first signaling includes identifiers of two reference signals, then the terminal may replace the identifier of one reference signal in the first signaling with the identifier of one reference signal in the first reference signal set, and replace the identifier of one reference signal in the first signaling with the identifier of one reference signal in the first reference signal set. The identifier of the other reference signal in is added to the first reference signal set.

For the manner in which the terminal updates the second reference signal set, reference may be made to the description of the manner in which the terminal updates the first reference signal set, and details are not described herein again.

The following describes the solution in which the first signaling includes the identification of one or more reference signals by using several embodiments.

In a first implementation manner, the network device sends first signaling to the terminal, where the first signaling includes identifiers of one or more reference signals, and the first signaling is used to instruct: the network device to the terminal The beam through which the terminal transmits the one or more reference signals is quasi-co-located with the beam through which the network device sends the PDCCH to the terminal, and the beam through which the one or more reference signals is quasi-co-located with the beam through which the PDCCH is transmitted may indicate the one or more beams. The reference signals are used for the terminal to receive the PDCCH. Wherein, since the beam that transmits the reference signal in the first reference signal set is quasi-co-located with the beam that transmits the PDCCH, it can be considered that the reference signal sent by the beam that is quasi-co-located with the beam that transmits the PDCCH is the reference signal in the first reference signal set , so, after receiving the first signaling, the terminal in this embodiment can determine that the one or more reference signals can be used for beam failure detection, and then, according to the one or more reference signals in the first signaling Identifies updating the first set of reference signals. In some implementations, the first signaling is existing signaling, such as TCI StateIndication for UE-specific PDCCH.

For example, it may be stipulated in the standard that when the serving beam of the terminal changes due to factors such as movement (that is, the beam monitoring the PDCCH changes), the terminal automatically updates the beam used for beam failure detection accordingly. The updating of the beam used for beam failure detection may be embodied in updating the reference signal set used for beam failure detection in the physical layer of the terminal.

Specifically: the terminal receives the TCI State Indication for UE-specific PDCCH of the MAC layer from the network device, and uses the received TCI State Indication for UE-specific PDCCH for beam dectection, that is, according to the TCI State Indication For the identifiers of one or more reference signals in the UE-specific PDCCH, update a reference signal set (beam failure detection RS set) in the physical layer of the terminal for beam failure detection to obtain a new reference signal set. Then, the terminal may perform beam failure detection based on the new reference signal set, that is, determine whether to send a beam failure instance.

In addition, after the terminal receives the TCI State Indication for UE-specific PDCCH, the terminal can automatically update the reference signal set (detection Resource set) used for beam failure detection in the RRC layer of the terminal; or, the terminal does not update the beam used in the RRC layer. The set of reference signals for failure detection, unless the terminal receives the RRC reconfiguration command sent by the network device; or, the terminal also receives a new explicit lower layer signaling (MAC layer signaling or physical layer signaling), the new The explicit low-layer signaling is used to instruct: the terminal updates the reference signal set used for beam failure detection in the RRC layer according to the identifier of the reference signal in the TCI State Indication for UE-specific PDCCH, and then the terminal displays the low-layer signaling according to the newly added Update the reference signal set used for beam failure detection in the RRC layer.

Based on the above, in order to realize the above scheme, the MAC protocol can be changed to:

The MAC entity shall:

if the MAC entity receives a TCI State Indication for UE-specific PDCCH MAC CE on a Serving Cell:

1>indicate to lower layers the information regarding the TCI StateIndication for UE-specific PDCCH MAC CE.

2>indicate to lower layers the information regarding the TCI StateIndication for beam failure detection MAC CE.

Physical layer protocols can be added as described below:

If the UE receives an instruction to switch the beam to monitor the PDCCH, the reference signal for beam failure detection will also be automatically updated accordingly. (If a UE has been indicated to switch beam for monitoring PDCCH, the BFD RS are updated automatically and accordingly.)

Therefore, in this embodiment, the existing MAC layer signaling is used to update: the reference signal set used for beam failure detection in the physical layer of the terminal, which is equivalent to the existing signaling implicitly instructing to update the above reference signal set, thereby It can reduce the phenomenon that the false detection is the occurrence of beam failure, reduce the number of communication interruptions, improve the communication quality, and do not need to change the signaling content transmitted between the terminal and the network device.

In a second implementation manner, the network device sends first signaling to the terminal, where the first signaling includes identifiers of one or more reference signals, and the first signaling is used to indicate: the one or more reference signals The identifier is used by the terminal to receive the PDCCH. The first signaling may be existing signaling, for example, may be TCI State Indication for UE-specific PDCCH. Moreover, the network device also sends second signaling to the terminal, where the second signaling is newly added signaling, the second signaling is MAC layer signaling or physical layer signaling, and the second signaling is used to indicate The first reference signal set is updated according to the identifiers of one or more reference signals included in the first signaling. It should be noted that the sequence in which the terminal receives the first signaling and the second signaling is not limited. After receiving the first signaling and the second signaling, the terminal determines according to the second signaling that the identifier of the reference signal in the first signaling can be used to update the first reference signal set, and then the terminal determines according to the first signaling The identifiers of the reference signals in update the first reference signal set.

For example, if the service beam of the terminal changes, the network device can instruct the terminal to update according to the identifier of the reference signal in the existing signaling through a newly added explicit lower layer signaling (MAC layer signaling or physical layer signaling). The set of reference signals used for beam failure detection in the physical layer of the terminal.

Specifically, the network device sends the TCI State Indication for UE-specific PDCCH to the terminal, and also sends newly added signaling (such as MAC CE) to the terminal, where the newly added signaling indicates according to the TCI State Indication for UE-specific PDCCH. The identifier of the reference signal updates the reference signal set used for beam failure detection in the physical layer of the terminal to obtain a new reference signal set. Correspondingly, after the terminal receives the TCI State Indication for UE-specific PDCCH of the MAC layer from the network device, and after receiving the newly added signaling (such as MAC CE), the terminal according to the identifier of the reference signal in the TCI State Indication for UE-specific PDCCH The reference signal set used for beam failure detection in the physical layer is updated, and then the terminal can perform beam failure detection based on the new reference signal set, that is, determine whether to send a beam failure event.

In addition, after the terminal receives the newly added signaling, the terminal can also automatically update the reference signal set used for beam failure detection in the RRC layer of the terminal according to the identifier of the reference signal in the TCI State Indication for UE-specific PDCCH; or, the terminal The reference signal set used for beam failure detection in the RRC layer is not updated unless the terminal receives the RRC reconfiguration command sent by the network device.

Therefore, in this embodiment, explicit signaling is added to indicate that the identifier of the reference signal in the existing MAC signaling is used to update the reference signal set used for beam failure detection in the physical layer of the terminal. The signaling is MAC layer signaling. Because the delay of MAC layer signaling is small, the terminal can quickly update the reference signal set used for beam failure detection in the physical layer, thereby reducing false detections as beam failures. The number of communication interruptions is reduced, and the communication quality is improved. In addition, since the newly added signaling is an indication signaling and does not need to carry the identifier of the reference signal, the network overhead of the newly added signaling is low.

In a third implementation manner, the terminal receives first signaling from the network device, where the first signaling includes identifiers of one or more reference signals, and the first signaling is used to indicate that according to the one or more reference signals The identifier of the update first reference signal set, the first signaling is newly added signaling, and the first signaling is MAC layer signaling or physical layer signaling. After receiving the first signaling, the terminal determines, according to the indication of the first signaling, that the identifier of the reference signal in the first signaling can be used to update the first reference signal set, and then the terminal according to the first signaling The identification of the reference signal updates the first reference signal set.

Optionally, the reference signal is a reference signal of a candidate beam of the terminal. Among them, the candidate beam is often a beam adjacent to the serving beam of the terminal. Due to the poor quality of the serving beam caused by the terminal movement, generally speaking, the quality of the adjacent beams received by the terminal will become better, so the network device will configure candidate beams in advance. When the beam detection fails, the terminal can try to find a new candidate beam in the candidate beam. The beam is used as the serving beam for beam failure recovery. Therefore, after the serving beam of the terminal is changed, the changed serving beam belongs to the candidate beam. Therefore, in this embodiment, the first reference signal set is updated according to the reference signal of the candidate beam, and the updated first reference signal set can reduce false detection as The number of times the beam failure phenomenon occurred.

For example, the network device indicates to the terminal through the MAC CE the identifiers of one or two reference signals (such as NZP-CSI-RS-Resource ID) in the candidate beam reference signal set (candidateBeam RS List) to update the terminal The set of reference signals used for beam failure detection in the physical layer.

Specifically, the network device sends the newly added MAC CE to the terminal, where the newly added MAC CE includes: one or two NZP-CSI-RS-Resource IDs in the reference signal set (candidate Beam RS List) of the candidate beam. And the newly added MAC CE indication updates the reference signal set used for beam failure detection in the physical layer according to the identifiers of the one or two reference signals. After receiving the newly added MAC CE, the terminal updates the reference signal set used for beam failure detection in the physical layer according to the NZP-CSI-RS-Resource ID in the newly added MAC CE. Then, the terminal may perform beam failure detection based on the new reference signal set, that is, determine whether to send a beam failure event.

In a possible scenario, when the terminal receives the newly added MAC CE after receiving the beam failure recovery request response from the network side, the newly added MAC CE may be carried in the PDSCH scheduled by the PDCCH in response to the BFRQ by the network device.

In addition, after the terminal receives the newly added MAC CE, the terminal may also automatically update the reference signal set used for beam failure detection in the RRC layer of the terminal according to the identifier of the reference signal in the newly added MAC CE; The reference signal set used for beam failure detection in the RRC layer is updated unless the terminal receives an RRC reconfiguration command sent by the network device.

Therefore, in this embodiment, a new MAC CE is added, and the MAC CE carries the identifier of the reference signal, and the MAC CE indicates to update the reference signal set used for beam failure detection at the physical layer of the terminal according to the identifier of the reference signal carried by the MAC CE. The MAC CE has less time delay, so the terminal can quickly update the reference signal set used for beam failure detection in the physical layer, thereby reducing false detections as beam failures, reducing the number of communication interruptions, and improving communication quality.

In other embodiments, unlike the first signaling in the above-mentioned embodiments, which includes the identifiers of one or more reference signals, the first signaling in this embodiment does not include the identifiers of the reference signals, but the first signaling. A signaling to indicate the identity of the reference signal. Correspondingly, the terminal may determine the identifiers of one or more reference signals indicated by the first signaling according to the first signaling, and then the terminal updates the first reference signal set according to the identifiers of the one or more reference signals.

In an implementation manner, the network device sends first signaling to the terminal, where the first signaling is used to instruct to update the first reference signal set according to the reference signal set of the candidate beam, and the first signaling is newly added signaling. After receiving the first signaling from the network device, the terminal determines, according to the first signaling, to update the first reference signal set according to the reference signal set of the candidate beam, where the terminal learns the identifiers of which reference signals are included in the reference signal set of the candidate beam For example, the reference signal set of the candidate beam includes identifiers of one or more reference signals, and then the terminal updates the first reference signal set according to the identifiers of the one or more reference signals.

For example, the network device indicates the reference signal set (candidateBeam RS List) of the candidate beam to the terminal through the MAC CE for updating the reference signal set used for beam failure detection in the physical layer.

Specifically: the network device sends the newly added MAC CE to the terminal, and the newly added MAC CE indicates that the physical layer is updated for the beam according to the NZP-CSI-RS-Resource ID in the reference signal set (candidate Beam RS List) of the candidate beam. The set of reference signals that failed detection. After receiving the newly added MAC CE, the terminal obtains the NZP-CSI-RS-Resource ID in the reference signal set of the candidate beam according to the newly added MAC CE, and then updates the obtained NZP-CSI-RS-Resource ID The set of reference signals used for beam failure detection in the physical layer. Then, the terminal may perform beam failure detection based on the new reference signal set, that is, determine whether to send a beam failure event.

In a possible scenario, when the terminal receives the newly added MAC CE after receiving the beam failure recovery request response from the network side, the newly added MAC CE may be carried in the PDSCH scheduled by the PDCCH in response to the BFRQ by the network device.

In addition, after the terminal receives the newly added MAC CE, the terminal may also automatically update the reference signal set used for beam failure detection in the RRC layer of the terminal according to the identifier of the reference signal in the newly added MAC CE; The reference signal set used for beam failure detection in the RRC layer is updated unless the terminal receives an RRC reconfiguration command sent by the network device.

Therefore, in this embodiment, a MAC CE is added, and the MAC CE instructs to update the reference signal set used for beam failure detection in the physical layer of the terminal according to the reference signal set of the candidate beam. Therefore, the terminal can quickly update the reference signal set used for beam failure detection in the physical layer. A set of reference signals for failure detection, thereby reducing false detections as beam failures, reducing the number of communication interruptions, and improving communication quality. In addition, since the newly added MAC CE is an indication signaling and does not need to carry the identifier of the reference signal, the network overhead of the newly added MAC CE is low.

It can be understood that, in the above embodiments, the methods or steps implemented by the terminal may also be implemented by components (such as chips or circuits) that can be used in the terminal, and the methods or steps implemented by the network device may also be implemented by the terminal. A component (eg, a chip or circuit, etc.) of a network device is implemented.

FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the application. As shown in FIG. 4 , the communication device may be a terminal, or a component of a terminal (for example, an integrated circuit, a chip, etc.), or may be other The communication module is configured to implement operations or steps corresponding to the terminal in the above method embodiments. The communication apparatus 400 may include: a receiving module 401 and a processing module 402 .

The receiving module 401 may be used to implement the receiving function of the terminal in the above method embodiments, and the processing module 402 may be used to implement the updating function of the terminal in each method embodiment.

The communication apparatus in this embodiment can be used to execute the technical solutions of the terminal in the above method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 5 is a schematic structural diagram of a communication apparatus provided by another embodiment of the present application. As shown in FIG. 5 , the communication apparatus may be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.), or Other communication modules may be used to implement operations or steps corresponding to network devices in the above method embodiments. The communication apparatus 500 may include: a processing module 501 and a sending module 502 .

The processing module 501 may be used to implement the generation function of the network device in the above method embodiments, and the sending module 502 may be used to implement the transmission function of the network device in the above method embodiments.

The communication apparatus in this embodiment can be used to execute the technical solutions of the network equipment in the above method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 6 is a schematic structural diagram of a communication device provided by another embodiment of the present application. As shown in FIG. 6 , the communication device may be a terminal, or a component of a terminal (for example, an integrated circuit, a chip, etc.), or may be a Other communication modules are used to implement operations or steps corresponding to the terminal in the foregoing method embodiments. The communication apparatus 600 may include: an interface 601 and a processor 602, where the interface 601 and the processor 602 are coupled.

The processor 602 may be configured to implement the update function of the terminal in each method embodiment, and may also implement the terminal receiving function in the above method embodiments through the interface 601 .

The communication apparatus in this embodiment can be used to execute the technical solutions of the terminal in the above method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 7 is a schematic structural diagram of a communication apparatus provided by another embodiment of the present application. As shown in FIG. 7 , the communication apparatus may be a network device, or may be a component of a network device (for example, an integrated circuit, a chip, etc.), or It may be other communication modules for implementing operations or steps corresponding to network devices in the above method embodiments. The communication apparatus 700 may include: an interface 701 and a processor 702, where the interface 701 and the processor 702 are coupled.

The processor 702 may be configured to implement the generation function of the network device in each method embodiment, and may also implement the sending function of the network device in the above method embodiments through the interface 701 .

The communication apparatus in this embodiment can be used to execute the technical solutions of the network equipment in the above method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 8 is a schematic structural diagram of a communication device provided by another embodiment of the present application. As shown in FIG. 8 , the communication device may be a terminal, or a component of a terminal (for example, an integrated circuit, a chip, etc.), or may be a Other communication modules are configured to implement operations or steps corresponding to the terminal in the above method embodiments. The communication apparatus 800 may include: a memory 801 and a processor 802, and the memory 801 and the processor 802 are coupled.

The memory 801 is used to store program instructions

The processor 802 is configured to invoke the program instructions in the memory 801, so that the communication apparatus 800 executes the technical solutions of the terminal in the foregoing method embodiments.

The communication apparatus in this embodiment can be used to execute the technical solutions of the terminal in the above method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 9 is a schematic structural diagram of a communication apparatus provided by another embodiment of the present application. As shown in FIG. 9 , the communication apparatus may be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.), or Other communication modules may be used to implement operations or steps corresponding to network devices in the foregoing method embodiments. The communication apparatus 900 may include: a memory 901 and a processor 902, where the memory 901 and the processor 902 are coupled.

The memory 901 is used to store program instructions.

The processor 902 is configured to invoke the program instructions in the memory 901, so that the communication apparatus 900 executes the technical solutions of the network device in the foregoing method embodiments.

The communication apparatus in this embodiment can be used to execute the technical solutions of the network equipment in the above method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. Each functional module in the embodiments of the present application may be integrated into one processing module, or each module may exist physically alone, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

Claims (9)

1. a communication method, is characterized in that, comprises: Receive first signaling from a network device, where the first signaling is physical layer signaling, and the first signaling is used to update the first reference signal set; the first signaling includes a transmission configuration number status indication and a identifiers of one or more reference signals; the first signaling is used to indicate that: the beam for sending the one or more reference signals to the terminal by the network device is quasi-co-located with the beam for sending the physical downlink control channel PDCCH; According to the first signaling, the first reference signal set is updated, where the first reference signal set is a reference signal set used for beam failure detection in the physical layer of the terminal. 2 . The method according to claim 1 , wherein before the updating the first reference signal set according to the first signaling, the method further comprises: 2 . Receive second signaling from the network device, where the second signaling is used to instruct to update the first reference signal set according to the identifiers of one or more reference signals included in the first signaling, the second The signaling is physical layer signaling. 3. The method according to claim 2, wherein the updating the first reference signal set according to the first signaling comprises: adding the identified portion of the one or more reference signals to the first set of reference signals; or, adding all of the identifiers of the one or more reference signals to the first set of reference signals; or, replacing part or all of the identifiers of the reference signals in the first reference signal set with the identified part of the one or more reference signals; or, Part or all of the identifiers of the reference signals in the first reference signal set are replaced by all of the identifiers of the one or more reference signals. 4. The method according to any one of claims 1-3, further comprising: According to the first signaling, a second reference signal set is updated, where the second reference signal set is a reference signal set used for beam failure detection in the RRC layer of the terminal radio resource control. 5. A communication method, characterized in that, comprising: generating third signaling, where the third signaling is physical layer signaling; Send the third signaling to the terminal, where the third signaling is used for the terminal to update the first reference signal set, where the first reference signal set is the reference signal used for beam failure detection in the physical layer of the terminal gather; Before the sending the third signaling to the terminal, the method further includes: Send fourth signaling to the terminal, where the fourth signaling is physical layer signaling, and the fourth signaling includes a transmission configuration number status indication and an identifier of one or more reference signals; the fourth signaling It is used to indicate that the beam through which the network device sends the one or more reference signals to the terminal is quasi-co-located with the beam through which the physical downlink control channel PDCCH is sent. 6. The method of claim 5, wherein The third signaling is used to instruct to update the first reference signal set according to the identifiers of the one or more reference signals in the fourth signaling. 7. A communication device, comprising: a memory and a processor, wherein the memory and the processor are coupled; the memory for storing program instructions; The processor is configured to invoke the program instructions in the memory, so that the communication apparatus executes the communication method according to any one of claims 1-4. 8. A communication device, comprising: a memory and a processor, wherein the memory and the processor are coupled; the memory for storing program instructions; The processor is configured to invoke program instructions in the memory, so that the communication device executes the communication method according to any one of claims 5 or 6. 9. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, the computer program comprises at least a piece of code, and the at least one piece of code can be executed by a computer to control the computer to execute The communication method according to any one of claims 1-6.

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