CN115175214A

CN115175214A - Method and device for switching wave beams and communication equipment

Info

Publication number: CN115175214A
Application number: CN202110960213.9A
Authority: CN
Inventors: 袁世通; 陈雷; 张希; 樊波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-04-06
Filing date: 2021-08-20
Publication date: 2022-10-11

Abstract

The method configures one or more transmission configuration indication state sets with an existing sequence for a terminal device through a wireless access network device, the terminal device measures one or more reference signals and sends a measurement result to the wireless access network device, and when the measurement result meets a certain condition, the terminal device autonomously switches beams according to the one or more transmission configuration indication state sets. The method, the device and the communication equipment for switching the wave beams simplify the wave beam switching process, improve the performance of the terminal equipment in a mobility scene with relatively determined track, and reduce the time delay of wave beam switching and the time delay of reporting the wave beam measurement result.

Description

Method and device for switching wave beams and communication equipment

The present application claims priority of chinese patent application entitled "method, apparatus and communication device for beam switching" filed by the chinese intellectual property office of china patent application No. 202110368989.1 on 6/4/2021, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications, and in particular, to a method, an apparatus, and a communication device for beam switching.

Background

The fifth generation mobile communication system (5th generation, 5g) employs high-frequency communication based on analog beams. Currently, when a service beam is switched between a radio access network device and a terminal device, the terminal device usually measures a candidate beam in advance, and reports and switches the beam according to a beam indication issued by the radio access network device, and a signaling needs to be confirmed after the beam is successfully switched. The above series of processes are complex, and there are also unavoidable signaling overhead and processing delay, which affect the speed and efficiency of beam switching. Therefore, how to simplify the beam switching process and reduce the signaling overhead and processing delay in the beam switching process becomes a problem to be solved urgently.

Disclosure of Invention

The application provides a method, a device and a communication device for beam switching, which simplify the beam switching process and reduce signaling overhead and processing time delay in the beam switching process.

In a first aspect, a method for beam switching is provided, including: the terminal equipment receives a first transmission configuration indication state set from the wireless access network equipment, wherein the first transmission configuration indication state set comprises a plurality of transmission configuration indication states, and a first sequence exists among the plurality of transmission configuration indication states; the terminal device measures one or more reference signals, wherein the one or more reference signals comprise a reference signal corresponding to a first transmission configuration indication state; the terminal device sending a measurement result of a first parameter value of the one or more reference signals to the radio access network device; when the measurement result meets a first preset condition, the terminal device switches the currently applied transmission configuration indication state to the first transmission configuration indication state, wherein the first transmission configuration indication state is a next transmission configuration indication state of the currently applied transmission configuration indication state based on the first order.

According to the scheme, by defining a new beam switching method and a new reporting triggering method, the terminal device does not need to perform beam reporting and beam switching according to a beam instruction issued by the wireless access network device, the beam switching process is simplified, the performance of the terminal device in a mobility scene with a relatively determined track is improved, the time delay of beam switching and the time delay of reporting a beam measurement result are reduced, the terminal device can communicate under a beam which can provide the optimal communication performance for the terminal device more quickly, the wireless access network device can acquire channel information of the terminal device under a new service beam more quickly, and Multiple Input Multiple Output (MIMO) transmission is faster.

With reference to the first aspect, in certain implementations of the first aspect, in a case that the terminal device measures the multiple reference signals, the first preset condition includes: the first transmission configuration indication state corresponds to a reference signal with a maximum first parameter value in the plurality of reference signals; or, in a case that the terminal device measures the reference signal, the first preset condition includes: the first parameter value of the one reference signal is greater than a first preset value, and the one reference signal is a reference signal corresponding to the first transmission configuration indication state.

By the scheme, the quality of the reference signal to be switched is ensured under the condition that no beam indication is sent by the wireless access network equipment, and the best communication performance is provided for the terminal equipment as far as possible.

With reference to the first aspect, in certain implementations of the first aspect, the first order is an arrangement order of the transmission configuration indication statuses in the first transmission configuration indication status set, or the first order is an order of large indices or small indices of the transmission configuration indication statuses.

With reference to the first aspect, in some implementations of the first aspect, the first order is determined according to a scene characteristic or a type of the terminal device.

According to the scheme, the sequence is determined according to different scenes or types of the terminal equipment, so that the success rate of the terminal equipment for carrying out autonomous switching by using the method is improved.

With reference to the first aspect, in certain implementations of the first aspect, the measurement result includes: the first transmission configuration indicates an identity of a reference signal corresponding to the state.

According to the scheme, the terminal equipment directly sends the identifier of the reference signal to be switched to the wireless access network equipment, so that the processing process of the wireless access network equipment is reduced, the beam switching process is further simplified, and the processing time delay is reduced.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal device receives one or more second transmission configuration indication state sets from the radio access network device, each of the second transmission configuration indication state sets comprising a plurality of transmission configuration indication states, each of the second transmission configuration indication states in the plurality of transmission configuration indication states in the state set having a second order.

According to the scheme, the plurality of transmission configuration indication state sets with sequences are configured for the terminal equipment, so that the terminal equipment can perform faster beam switching on a plurality of moving tracks, and the success rate of autonomous beam switching of the terminal equipment is improved.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: when the first transmission configuration indication state is used as the currently applied transmission configuration indication state, the terminal device sends a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state to the radio access network device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

According to the scheme, when one transmission configuration indication state in the first transmission configuration indication state set is applied, the terminal device is automatically triggered to measure the reference signal indicated by the measurement configuration of the next transmission configuration indication state in the set based on the sequence, and the reference signal is reported according to the reported configuration, so that the beam switching process is further simplified, and the processing delay in the beam switching process is reduced.

With reference to the first aspect, in certain implementations of the first aspect, the measurement result is sent by the terminal device to the radio access network device based on an indication of the radio access network device, or the measurement result is periodically sent by the terminal device to the radio access network device based on a configuration of the radio access network device.

With reference to the first aspect, in certain implementations of the first aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

In a second aspect, a method for beam switching is provided, including: the method comprises the steps that a wireless access network device sends a first transmission configuration indication state set to a terminal device, wherein the first transmission configuration indication state set comprises a plurality of transmission configuration indication states, and a first sequence exists among the plurality of transmission configuration indication states; the radio access network device receiving a measurement result of a first parameter value of one or more reference signals from the terminal device, the one or more reference signals including a reference signal corresponding to the first transmission configuration indication state; when the measurement result meets a first preset condition, the radio access network device switches the currently applied transmission configuration indication state to the first transmission configuration indication state, wherein the first transmission configuration indication state is a next transmission configuration indication state of the currently applied transmission configuration indication state based on the first order.

It should be understood that, a beam used by the downlink signal transmitted by the radio access network device corresponds to a transmission beam of one reference signal in the first transmission configuration indication state, and the radio access network device may assume that the terminal device will receive the downlink signal according to the first transmission configuration indication state before switching the transmission configuration indication state. In contrast, the reception beam or the reception spatial filter used for the downlink signal received by the terminal device refers to the reception beam or the reception spatial filter used for receiving one reference signal in the first transmission configuration indication state. Before the terminal device switches the transmission configuration indication state, it may be assumed that the radio access network device will transmit a downlink signal according to the first transmission configuration indication state.

According to the scheme, by defining a new beam switching method and a new reporting triggering method, the terminal equipment does not need to wait for receiving a beam indication issued by the wireless access network equipment and then carry out beam reporting and beam switching, the beam switching process is simplified, the performance of the terminal equipment in a mobility scene with a relatively determined track is improved, the delay of beam switching and the delay of reporting a beam measurement result are reduced, the terminal equipment can communicate under a beam which can provide the optimal communication performance for the terminal equipment more quickly, the wireless access network equipment can acquire channel information of the terminal equipment under a new service beam more quickly, and MIMO transmission is faster.

With reference to the second aspect, in certain implementations of the second aspect, in a case where the radio access network device receives a measurement result of a first parameter value of the plurality of reference signals from the terminal device, the first preset condition includes: the first transmission configuration indication state corresponds to a reference signal with a maximum first parameter value in the plurality of reference signals; alternatively, in a case where the radio access network device receives a measurement result of the first parameter value of the one reference signal from the terminal device, the first preset condition includes: the first parameter value of the one reference signal is greater than a first preset value, and the one reference signal is a reference signal corresponding to the first transmission configuration indication state.

With reference to the second aspect, in some implementations of the second aspect, the first order is an arrangement order of the transmission configuration indication statuses in the first transmission configuration indication status set, or the first order is an order of big-to-small or big-to-big indexes of the transmission configuration indication statuses.

With reference to the second aspect, in some implementations of the second aspect, the first order is determined according to a scene characteristic or a type of the terminal device.

With reference to the second aspect, in certain implementations of the second aspect, the measurement result includes: the first transmission configuration indicates an identity of a reference signal corresponding to the state.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the radio access network device sends one or more second transmission configuration indication state sets to the terminal device, each second transmission configuration indication state set comprises a plurality of transmission configuration indication states, and each second transmission configuration indication state set comprises a second sequence of the plurality of transmission configuration indication states.

According to the scheme, the plurality of transmission configuration indication state sets with the sequence are configured for the terminal equipment, so that the terminal equipment can perform faster beam switching on a plurality of moving tracks, and the success rate of autonomous beam switching of the terminal equipment is improved.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: when the first transmission configuration indication state is used as the currently applied transmission configuration indication state, the radio access network device receives a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state from the terminal device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

With reference to the second aspect, in some implementations of the second aspect, the measurement result is sent by the terminal device to the radio access network device based on an indication of the radio access network device, or the measurement result is sent by the terminal device to the radio access network device periodically based on a configuration of the radio access network device.

With reference to the second aspect, in certain implementations of the second aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

In a third aspect, a method for beam switching is provided, including: the terminal equipment acquires a first reference signal group set, wherein the first reference signal group set comprises a plurality of reference signal groups, and the plurality of reference signal groups exist in sequence; the terminal equipment measures a plurality of reference signals, wherein the plurality of reference signals comprise a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group set; the terminal equipment sends the measurement result of the first parameter values of the plurality of reference signals to the wireless access network equipment; and when the measurement result meets a second preset condition, the terminal equipment switches the currently applied transmission configuration indication state into a transmission configuration indication state corresponding to the second reference signal.

It should be understood that the reference signal group set may be understood as one measurement configuration, or may be a further extension of the measurement configuration involved in the current beam switching process, and may or may not be applied in the same manner as the current measurement configuration, which is not limited in the present application. In addition, the reference signal set may follow the related names of the existing measurement configurations, and other names may also be used, which is not limited in this application.

According to the technical scheme, by defining the reference signal group, the terminal equipment does not need to report the beam and switch the beam according to the beam indication issued by the wireless access network equipment, the beam switching process is simplified, the performance of the terminal equipment in a mobility scene with a relatively determined track is improved, the time delay of beam switching and the time delay of reporting the beam measurement result are reduced, the terminal equipment can communicate under the beam which can provide the optimal communication performance for the terminal equipment more quickly, the wireless access network equipment can acquire the channel information of the terminal equipment under a new service beam more quickly, and the MIMO transmission is more quick.

With reference to the third aspect, in certain implementations of the third aspect, the second preset condition includes: the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal.

With reference to the third aspect, in certain implementations of the third aspect, in the first set of reference signal groups, two reference signal groups that are adjacent based on the order respectively include at least one same reference signal, or at least two reference signals respectively have a quasi-parity relationship.

According to the scheme, the success rate of the terminal equipment for switching the beams according to the first reference signal group set and the corresponding sequence thereof is improved by defining the characteristics of the first reference signal group set.

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: and the terminal equipment continuously sends the measurement result to the wireless access network equipment for N times, wherein N is a positive integer.

According to the scheme, the ping-pong effect is prevented by defining the specific condition for triggering the report switching, the problem that the radio access network equipment fails to detect the report information is reduced, and the terminal equipment and the radio access network equipment can be further ensured to synchronously switch the service beams.

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the terminal device receives first information from the radio access network device, where the first information is used to confirm that a transmission configuration indication state corresponding to the second reference signal is used as a transmission configuration indication state of a next application.

According to the scheme, the problem that the radio access network equipment fails to detect the reported information is reduced by defining the specific condition for triggering the reporting switching, and the terminal equipment and the radio access network equipment are further ensured to synchronously switch the service beams.

With reference to the third aspect, in certain implementations of the third aspect, the measurement result is used to indicate that the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal, or the measurement result includes the first parameter value of the second reference signal and the first parameter value of the first reference signal, or the measurement result includes an identification of the second reference signal.

With reference to the third aspect, in certain implementations of the third aspect, when the transmission configuration indication state corresponding to the second reference signal is a currently applied transmission configuration indication state, the terminal device sends, to the radio access network device, a measurement result of a first parameter value of a plurality of reference signals, the plurality of reference signals including the second reference signal and a third reference signal, the third reference signal corresponding to an available transmission configuration indication state, the second reference signal and the third reference signal belonging to a second reference signal group of the first set of reference signals, the second reference signal group being a next reference signal group of the first set of reference signals based on the order.

According to the scheme, when one reference signal in the first reference signal group is applied, the measurement configuration and the reporting configuration of the next transmission configuration indication state in the sequence-based first reference signal group set can be automatically triggered, the beam switching process is further simplified, and the processing delay in the beam switching process is reduced.

With reference to the third aspect, in certain implementations of the third aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

With reference to the third aspect, in certain implementations of the third aspect, the terminal device receives a plurality of second reference signal group sets from the radio access network device, where the second reference signal group sets include a plurality of reference signals, and there is an order of the plurality of reference signal groups, and in the second reference signal group sets, two adjacent reference signal groups based on the order respectively include at least one same reference signal, or at least two reference signals respectively have a quasi-co-located relationship.

According to the scheme, the plurality of reference signal group sets with the sequence are configured for the terminal equipment, so that the terminal equipment can perform faster beam switching on a plurality of moving tracks, and the success rate of autonomous beam switching of the terminal equipment is improved.

With reference to the third aspect, in certain implementations of the third aspect, the order is an order of the plurality of reference signal groups arranged in the first reference signal group set, or the order is an order of the indexes of the plurality of reference signal groups from large to small or from small to large, or the order is determined based on the transmission configuration indication statuses corresponding to the plurality of reference signal groups.

It is to be understood that the order is determined based on the transmission configuration indication states corresponding to the plurality of reference signal groups, it being understood that each reference signal group in the first reference signal group corresponds to a transmission configuration indication state. In particular, it may be that one reference signal in each set of reference signals corresponds to one transmission configuration indication state.

In a fourth aspect, a method for beam switching is provided, including: acquiring a first reference signal group set by a wireless access network device, wherein the first reference signal group set comprises a plurality of reference signal groups, and the plurality of reference signal groups exist in sequence; the radio access network device receives a measurement result of a first parameter value of a plurality of reference signals from the terminal device, wherein the plurality of reference signals include a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group; and when the measurement result meets a second preset condition, the radio access network equipment switches the currently applied transmission configuration indication state into a transmission configuration indication state corresponding to the second reference signal.

According to the scheme, by defining the reference signal group, the terminal equipment does not need to report and switch the beams according to the beam indication issued by the wireless access network equipment, the beam switching process is simplified, the performance of the terminal equipment in a mobile scene with a relatively determined track is improved, the time delay of beam switching and the time delay of reporting a beam measurement result are reduced, the terminal equipment can communicate under the beam which can provide the optimal communication performance for the terminal equipment more quickly, the wireless access network equipment can acquire the channel information of the terminal equipment under a new service beam more quickly, and the MIMO transmission is more quick.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the second preset condition includes: the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal.

With reference to the fourth aspect, in certain implementations of the fourth aspect, in the first set of reference signal groups, two reference signal groups that are adjacent to each other based on the order respectively include at least one same reference signal, or at least two reference signals respectively have a quasi-co-location relationship.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the radio access network device receives the measurement result from the terminal device N times consecutively, where N is a positive integer.

According to the scheme, the ping-pong effect is prevented by defining the specific condition for triggering the report switching, the problem that the report information is missed by the wireless access network equipment is reduced, and the terminal equipment and the wireless access network equipment can be further ensured to synchronously switch the service beams.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: and the radio access network equipment sends first information to the terminal equipment, wherein the first information is used for confirming that the transmission configuration indication state corresponding to the second reference signal is used as the transmission configuration indication state of the next application.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the measurement result is used to indicate that the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal, or the measurement result includes the first parameter value of the second reference signal and the first parameter value of the first reference signal, or the measurement result includes an identification of the second reference signal.

With reference to the fourth aspect, in certain implementations of the fourth aspect, when the transmission configuration indication state corresponding to the second reference signal is a currently applied transmission configuration indication state, the radio access network device receives a measurement result of a first parameter value of a plurality of reference signals from the terminal device, the plurality of reference signals including the second reference signal and a third reference signal, the third reference signal corresponding to an available transmission configuration indication state, the second reference signal and the third reference signal belonging to a second reference signal group of the first reference signal group, the second reference signal group being a next reference signal group of the first reference signal group based on the order.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the radio access network device sends, to the terminal device, a plurality of second reference signal group sets, where the second reference signal group set includes a plurality of reference signals, and an order of the plurality of reference signal groups exists, and in the second reference signal group set, two adjacent reference signal groups based on the order respectively include at least one same reference signal, or at least two reference signals respectively have a quasi-co-located relationship.

According to the scheme, the wireless access network equipment configures a plurality of reference signal group sets with sequences for the terminal equipment, so that the terminal equipment can perform faster beam switching on a plurality of moving tracks, and the success rate of autonomous beam switching of the terminal equipment is improved.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the order is an order of the plurality of reference signal groups arranged in the first reference signal group set, or the order is an order of the indexes of the plurality of reference signal groups from large to small or from small to large, or the order is determined based on the transmission configuration indication statuses corresponding to the plurality of reference signal groups.

It is to be understood that the order is determined based on the transmission configuration indication status corresponding to the plurality of reference signal groups, it being understood that each reference signal group in the first reference signal group corresponds to a transmission configuration indication status. In particular, it may be that one reference signal in each set of reference signals corresponds to one transmission configuration indication state.

In a fifth aspect, a method for beam measurement is provided, including: the terminal equipment receives first indication information from the radio access network equipment, wherein the first indication information is used for indicating a first spatial correlation beam set, the first spatial correlation beam set comprises at least one beam related to a first beam, the first beam is a service beam indicated by a first transmission configuration indication state and currently used for receiving a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH), and the first spatial correlation beam set is a spatial correlation beam set corresponding to the service beam; the terminal device makes measurements on the first beam and the at least one beam of the first set of spatially dependent beams.

According to the scheme, the space-related beam set configured for the terminal equipment by the wireless access network equipment can reduce the cost of measuring beams of the terminal equipment under the moving condition, save resources, promote more effective beam maintenance and simplify the beam switching process.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the at least one beam is spatially correlated with the first beam, the method further comprising: the terminal device sends to the radio access network device a measurement of a first parameter value of the first beam, a measurement of the first parameter value of the at least one beam of the first set of spatially related beams.

According to the scheme, the wireless access network equipment provides the space-related beam set of the current service beam for the UE, and the terminal can only track and measure the service beam and the beams in the space-related beam set according to the space-related beam set, so that the energy consumption and the cost of measurement and reporting of the terminal are reduced, and more effective beam maintenance is promoted.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first indication information is further used to indicate at least one second spatially-related beam set, where the second spatially-related beam set includes at least one beam spatially related to a second beam, and the second beam is different from the first beam, and when the beam indicated by the first transmission configuration indication status is switched to the second beam, the terminal device determines, according to the first indication information, the second spatially-related beam set as the spatially-related beam set corresponding to the service beam.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device receives second indication information from the radio access network device, where the second indication information is used to indicate at least one second beam, and the at least one second beam is in one-to-one correspondence with the at least one second spatially correlated beam set; the terminal device determines the second spatially-correlated beam set as a spatially-correlated beam set corresponding to the service beam according to the first indication information, including: and the terminal equipment determines the second spatial correlation beam set as a spatial correlation beam set corresponding to the service beam according to the first indication information and the second indication information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal equipment receives third indication information from the wireless access network equipment, wherein the third indication information is used for indicating the first resource; the terminal device sending the measurement result of the first parameter value of the first beam, the measurement result of the first parameter value of the beam in the first set of spatially related beams to the radio access network device, including: when the number of beams in the first spatially related beam set is greater than N, the terminal device sends, to the radio access network device on the first resource, a measurement result of a first parameter value of the first beam and a measurement result of the first parameter value of beams in the first spatially related beam set, where a minimum value of the first parameter values of the N beams is greater than or equal to a maximum value of the first parameter values of the N beams in the first spatially related beam set except for the N beams, where N is a positive integer, according to the measurement result of the first parameter value of the first beam and the measurement result of the first parameter value of the beams in the first spatially related beam set.

According to the scheme, the terminal can automatically update the measured and reported service beam and the related beam according to the switching condition of the current service beam based on the new reporting configuration preconfigured by the wireless access network equipment, so that more effective beam maintenance is further promoted, and particularly, when the beams are not matched in a complex propagation environment, the terminal can flexibly perform more effective beam maintenance.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device determines a beam for beam failure recovery or beam failure detection from the measurement of the first parameter value of a beam in the first set of spatially correlated beams.

According to the scheme, the space-related beam set configured by the wireless access network equipment is used as the candidate beam for beam failure recovery or the beam set for beam failure detection, so that the signaling sending expense of the wireless access network equipment is saved, the energy consumption and the expense of terminal measurement and reporting are reduced, and the effective beam maintenance is further promoted.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device sends an index of at least one third beam and a measurement result of the first parameter value to the radio access network device M times, wherein the third beam is not the first beam and does not belong to the first spatially correlated beam set, and the first parameter value of the at least one third beam is greater than a first threshold value; the terminal device adds the at least one third beam to the first spatially correlated beam set to obtain an updated first spatially correlated beam set.

According to the scheme, the terminal can update the space-related beam set according to the measurement result, beam maintenance is flexibly and effectively carried out autonomously, the defect that the space-related beam set is directly configured by the wireless access network equipment in the environment with changeable beam channel states is overcome, and the reliability and the expandability of the scheme are improved. Meanwhile, the network side updates the space correlation beam set according to the suggestion of the UE, so that the beams required to be measured can be reduced, and the energy consumption and the expense are reduced.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device sends fourth indication information to the radio access network device, wherein the fourth indication information is used for indicating at least one fourth beam; the terminal device updates the first spatially correlated beam set to the at least one fourth beam to obtain an updated first spatially correlated beam set.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device sends the measurement result of the first parameter value of the at least one fourth beam to the radio access network device.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device determines a beam for beam failure recovery or beam failure detection according to the measurement result of the first parameter value of the beam in the updated first spatial correlation beam set.

According to the scheme, the space-related beam set configured by the wireless access network equipment is used as the candidate beam for beam failure recovery or the beam set for beam failure detection, so that the signaling sending overhead of the wireless access network equipment is saved, the energy consumption and the overhead of terminal measurement and reporting are reduced, and the effective beam maintenance is further promoted.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device receives a transmission configuration indication state set from the radio access network device, where the transmission configuration indication state set includes a plurality of transmission configuration indication states, where the plurality of transmission configuration indication states include the first transmission configuration indication state, or a source reference signal of an antenna port quasi co-located (QCL) Type D of the first transmission configuration indication state is the same as a source reference signal of a quasi co-located QCL Type D of one of the plurality of transmission configuration indication states, or the source reference signal of the quasi co-located QCL Type D of the first transmission configuration indication state and the source reference signal of the quasi co-located QCL Type D of one of the plurality of transmission configuration indication states are QCL.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: the terminal device receives fifth indication information from the radio access network device, where the fifth indication information is used to indicate a second transmission configuration indication state, and the second transmission configuration indication state is used to indicate a fifth beam, where the fifth beam belongs to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states; the terminal device receives sixth indication information from the radio access network device, where the sixth indication information is used to indicate a third transmission configuration indication state, and the third transmission configuration indication state is used to indicate a sixth beam, where the sixth beam does not belong to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states, and where the fifth indication information indicates that the activation delay of the second transmission configuration indication state is smaller than the activation delay of the third transmission configuration indication state indicated by the sixth indication information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first parameter value includes a beam received power, RSRP, or a signal to interference plus noise ratio, SINR.

In a sixth aspect, a method of beam measurement is provided, comprising: the method comprises the steps that a wireless access network device generates first indication information, wherein the first indication information is used for indicating a first space-related beam set, the first space-related beam set comprises at least one beam related to a first beam, the first beam is a service beam indicated by a first transmission configuration indication state and currently used for receiving a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH), and the first space-related beam set is a space-related beam set corresponding to the service beam; the wireless access network equipment sends the first indication information to the terminal equipment.

According to the scheme, the space-related beam set configured for the terminal equipment by the wireless access network equipment can reduce the overhead of measuring the beam of the terminal equipment under the moving condition, save resources, promote more effective beam maintenance and simplify the beam switching process.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the at least one beam is spatially arranged in relation to the first beam, and the radio access network device receives measurements of a first parameter value of the first beam from the terminal device, measurements of the first parameter value of a beam of the first set of spatially related beams.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first indication information further includes at least one second set of spatially correlated beams including at least one beam spatially correlated with a second beam, the second beam being different from the first beam.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises:

the radio access network device sends second indication information to the terminal device, where the second indication information is used to indicate at least one of the second beams, and the at least one of the second beams corresponds to the at least one of the second spatially correlated beam sets one to one.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the radio access network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating the first resource; the radio access network device receiving a measurement of a first parameter value for the first beam from the terminal device, the measurement of the first parameter value for a beam of the first set of spatially related beams, comprising: when the number of beams in the first spatially related beam set is greater than N, the radio access network device receives, on the first resource, a measurement of a first parameter value from a terminal device, a measurement of the first parameter value of a beam in the first spatially related beam set, wherein a minimum value of the first parameter value of the N beams is greater than or equal to a maximum value of the first parameter value of the first spatially related beam set other than the N beams, N being a positive integer.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the radio access network device receives the measurement result of the index and the first parameter value of at least one third beam from the terminal device M times, wherein the third beam is not the first beam and does not belong to the first spatially correlated beam set, and the first parameter value of the at least one third beam is greater than a first threshold value; the radio access network device adds the at least one third beam to the first spatially correlated beam set to obtain an updated first spatially correlated beam set.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the radio access network equipment receives fourth indication information from the terminal equipment, wherein the fourth indication information is used for indicating at least one fourth beam; and the radio access network equipment updates the reference signal included in the first spatial correlation beam set into the at least one fourth beam according to the fourth indication information to obtain an updated first spatial correlation beam set.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the radio access network device receives a measurement of a value of the first parameter of the at least one fourth beam from the terminal device.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the wireless access network equipment determines a transmission configuration indication state set according to the updated first spatial correlation beam set, wherein the transmission configuration indication state set comprises a plurality of transmission configuration indication states.

According to the scheme, the space-related beam set which can be maintained by the terminal independently is used as the activated TCI list, so that the terminal can maintain the activated TCI list independently, time delay in the beam switching process is reduced, the situation of beam mismatching is reduced, and the robustness of a beam link is improved.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the radio access network device sends a transmission configuration indication state set to the terminal device, where the transmission configuration indication state set includes a plurality of transmission configuration indication states, where the plurality of transmission configuration indication states include the first transmission configuration indication state, or a source reference signal of quasi-co-located QCL Type D of the first transmission configuration indication state is the same as a source reference signal of quasi-co-located QCL Type D of one transmission configuration indication state of the plurality of transmission configuration indication states, or the source reference signal of quasi-co-located QCL Type D of the first transmission configuration indication state and the source reference signal of quasi-co-located QCL Type D of one transmission configuration indication state of the plurality of transmission configuration indication states are QCL.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: the radio access network device sends fifth indication information to the terminal device, where the fifth indication information is used to indicate a second transmission configuration indication state, and the second transmission configuration indication state is used to indicate a fifth beam, where the fifth beam belongs to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states; the radio access network device sends sixth indication information to the terminal device, where the sixth indication information is used to indicate a third transmission configuration indication state, and the third transmission configuration indication state is used to indicate a sixth beam, where the sixth beam does not belong to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states, and where the fifth indication information indicates that the activation delay of the second transmission configuration indication state is smaller than the activation delay of the third transmission configuration indication state indicated by the sixth indication information.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

In a seventh aspect, an apparatus for beam switching is provided, including: a transceiver module, configured to receive a first set of transmission configuration indication states from a radio access network device, where the first set of transmission configuration indication states includes a plurality of transmission configuration indication states, and where the plurality of transmission configuration indication states exist in a first order; a processing module, configured to measure one or more reference signals, where the one or more reference signals include a reference signal corresponding to a first transmission configuration indication state; the transceiver module is further configured to send a measurement result of a first parameter value of the one or more reference signals to the radio access network device; when the measurement result meets a first preset condition, the processing module switches the currently applied transmission configuration indication state to the first transmission configuration indication state, wherein the first transmission configuration indication state is a next transmission configuration indication state of the currently applied transmission configuration indication state based on the first order.

According to the scheme, by defining a new beam switching method and a new reporting triggering method, the terminal equipment does not need to perform beam reporting and beam switching according to the beam indication issued by the wireless access network equipment, the beam switching process is simplified, the performance of the terminal equipment in a mobile scene with a relatively determined track is improved, the time delay of beam switching and the time delay of reporting a beam measurement result are reduced, the terminal equipment can more quickly communicate under the beam which can provide the optimal communication performance for the terminal equipment, the wireless access network equipment can more quickly acquire the channel information of the terminal equipment under the new service beam, and the MIMO transmission is more quick.

With reference to the seventh aspect, in some implementations of the seventh aspect, in a case that the processing module measures the multiple reference signals, the first preset condition includes: the first transmission configuration indication state corresponds to a reference signal with a maximum first parameter value in the plurality of reference signals; or, in a case that the processing module measures the one reference signal, the first preset condition includes: the first parameter value of the one reference signal is greater than a first preset value, and the one reference signal is a reference signal corresponding to the first transmission configuration indication state.

With reference to the seventh aspect, in some implementations of the seventh aspect, the first order is an order of arrangement of the multiple transmission configuration indication states in the first transmission configuration indication state set, or the first order is an order of descending or ascending indexes of the multiple transmission configuration indication states.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the measurement result includes: the first transmission configuration indicates an identity of a reference signal corresponding to the state.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the transceiver module is configured to receive one or more second transmission configuration indication state sets from the radio access network device, where each of the second transmission configuration indication state sets includes a plurality of transmission configuration indication states, and each of the second transmission configuration indication states in the plurality of transmission configuration indication states in the state set has a second order.

With reference to the seventh aspect, in certain implementations of the seventh aspect, when the first transmission configuration indication state is a currently applied transmission configuration indication state, the transceiver module is configured to send, to the radio access network device, a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

With reference to the seventh aspect, in some implementations of the seventh aspect, the measurement result is sent by the transceiver module to the radio access network device based on an indication of the radio access network device, or the measurement result is periodically sent by the transceiver module to the radio access network device based on a configuration of the radio access network device.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the first parameter value includes reference signal received power, RSRP, or signal to interference plus noise ratio, SINR.

In an eighth aspect, an apparatus for beam switching is provided, including: a transceiver module, configured to send a first transmission configuration indication state set to a terminal device, where the first transmission configuration indication state set includes a plurality of transmission configuration indication states, and a first order exists among the plurality of transmission configuration indication states; the transceiver module is further configured to receive a measurement result of a first parameter value of one or more reference signals from the terminal device, where the one or more reference signals include a reference signal corresponding to the first transmission configuration indication state; when the measurement result meets a first preset condition, a processing module is configured to switch a currently applied transmission configuration indication state to the first transmission configuration indication state, where the first transmission configuration indication state is a next transmission configuration indication state of the currently applied transmission configuration indication state based on the first order.

According to the scheme, by defining a new beam switching method and a new reporting triggering method, the terminal equipment does not need to perform beam reporting and beam switching according to the beam indication issued by the wireless access network equipment, the beam switching process is simplified, the performance of the terminal equipment in a mobility scene with a relatively determined track is improved, the delay of beam switching and the delay of reporting a beam measurement result are reduced, the terminal equipment can communicate under the beam which can provide the optimal communication performance for the terminal equipment more quickly, the wireless access network equipment can acquire the channel information of the terminal equipment under the new service beam more quickly, and MIMO transmission is faster.

With reference to the eighth aspect, in some implementations of the eighth aspect, in a case that the transceiver module receives a measurement result of a first parameter value of the plurality of reference signals from the terminal device, the first preset condition includes: the first transmission configuration indication state corresponds to a reference signal with a maximum first parameter value in the plurality of reference signals; alternatively, in a case where the transceiver module receives a measurement result of a first parameter value of the one reference signal from the terminal device, the first preset condition includes: the first parameter value of the one reference signal is greater than a first preset value, and the one reference signal is a reference signal corresponding to the first transmission configuration indication state.

With reference to the eighth aspect, in some implementations of the eighth aspect, the first order is an arrangement order of the transmission configuration indication statuses in the first transmission configuration indication status set, or the first order is an order of big-to-small or big-to-big indexes of the transmission configuration indication statuses.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the measurement results include: the first transmission configuration indicates an identity of a reference signal corresponding to the state.

With reference to the eighth aspect, in some implementations of the eighth aspect, the transceiver module is further configured to send one or more second transmission configuration indication state sets to the terminal device, where each second transmission configuration indication state set includes a plurality of transmission configuration indication states, and each second transmission configuration indication state set indicates that a second order exists among the plurality of transmission configuration indication states.

With reference to the eighth aspect, in some implementations of the eighth aspect, when the first transmission configuration indication state is used as a currently applied transmission configuration indication state, the transceiver module is configured to receive a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state from the terminal device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

With reference to the eighth aspect, in some implementations of the eighth aspect, the measurement result is sent by the terminal device to the radio access network device based on an indication of the radio access network device, or the measurement result is sent by the terminal device to the radio access network device periodically based on a configuration of the radio access network device.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

In a ninth aspect, an apparatus for beam switching is provided, which includes: a processing module for obtaining a first set of reference signal groups, the first set of reference signal groups comprising a plurality of reference signal groups, the plurality of reference signal groups being in an order; the processing module is further configured to measure a plurality of reference signals, where the plurality of reference signals include a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group set; a transceiver module, configured to send a measurement result of a first parameter value of the multiple reference signals to the radio access network device; and when the measurement result meets a second preset condition, the processing module switches the currently applied transmission configuration indication state into a transmission configuration indication state corresponding to the second reference signal.

With reference to the ninth aspect, in certain implementations of the ninth aspect, the second preset condition includes: the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal.

With reference to the ninth aspect, in certain implementations of the ninth aspect, in the first set of reference signal groups, two reference signal groups adjacent to each other in the order include at least one same reference signal, or at least two reference signals have a quasi-co-location relationship.

With reference to the ninth aspect, in some implementations of the ninth aspect, the transceiver module is further configured to send the measurement result to the radio access network device N times in succession, where N is a positive integer.

With reference to the ninth aspect, in some implementations of the ninth aspect, the transceiver module is further configured to receive first information from the radio access network device, where the first information is used to confirm that a transmission configuration indication status corresponding to the second reference signal is used as a transmission configuration indication status of a next application.

With reference to the ninth aspect, in certain implementations of the ninth aspect, the measurement result is used to indicate that the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal, or the measurement result includes the first parameter value of the second reference signal and the first parameter value of the first reference signal, or the measurement result includes an identification of the second reference signal.

With reference to the ninth aspect, in certain implementations of the ninth aspect, when the transmission configuration indication state corresponding to the second reference signal is a currently applied transmission configuration indication state, the transceiver module is further configured to send, to the radio access network device, a measurement result of a first parameter value of a plurality of reference signals, the plurality of reference signals including the second reference signal and a third reference signal, the third reference signal corresponding to an available transmission configuration indication state, the second reference signal and the third reference signal belonging to a second reference signal group of the first reference signal group set, the second reference signal group being a next reference signal group of the first reference signal group based on the order.

With reference to the ninth aspect, in certain implementations of the ninth aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

With reference to the ninth aspect, in certain implementations of the ninth aspect, the order is an order of the plurality of reference signal groups arranged in the first reference signal group set, or the order is an order of the indexes of the plurality of reference signal groups from large to small or from small to large, or the order is determined based on the transmission configuration indication statuses corresponding to the plurality of reference signal groups.

In a tenth aspect, there is provided an apparatus for beam switching, comprising: a processing module for obtaining a first set of reference signal groups, the first set of reference signal groups comprising a plurality of reference signal groups, the plurality of reference signal groups being in an order; a transceiver module, configured to receive measurement results of first parameter values of multiple reference signals from the terminal device, where the multiple reference signals include a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group set; when the measurement result meets a second preset condition, the processing module is further configured to switch the currently applied transmission configuration indication state to the transmission configuration indication state corresponding to the second reference signal.

With reference to the tenth aspect, in certain implementations of the tenth aspect, the second preset condition includes: the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal.

With reference to the tenth aspect, in certain implementations of the tenth aspect, in the first set of reference signal groups, two reference signal groups adjacent to each other in the order include at least one same reference signal, or at least two reference signals have quasi-parity.

With reference to the tenth aspect, in some implementations of the tenth aspect, the transceiver module is further configured to receive the measurement result from the terminal device N times in succession, where N is a positive integer.

With reference to the tenth aspect, in some implementations of the tenth aspect, the transceiver module is configured to send, to the terminal device, first information, where the first information is used to confirm that a transmission configuration indication state corresponding to the second reference signal is used as a transmission configuration indication state of a next application.

With reference to the tenth aspect, in certain implementations of the tenth aspect, the measurement result is used to indicate that the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal, or the measurement result includes the first parameter value of the second reference signal and the first parameter value of the first reference signal, or the measurement result includes an identification of the second reference signal.

With reference to the tenth aspect, in certain implementations of the tenth aspect, when the transmission configuration indication state corresponding to the second reference signal is a currently applied transmission configuration indication state, the transceiver module is configured to receive measurement results of first parameter values of a plurality of reference signals from the terminal device, the plurality of reference signals including the second reference signal and a third reference signal, the third reference signal corresponding to an available transmission configuration indication state, the second reference signal and the third reference signal belonging to a second reference signal group of the first set of reference signals, the second reference signal group being a next reference signal group of the first set of reference signals based on the order.

With reference to the tenth aspect, in certain implementations of the tenth aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

With reference to the tenth aspect, in certain implementations of the tenth aspect, the order is an order of the plurality of reference signal groups arranged in the first reference signal group set, or the order is an order of the indexes of the plurality of reference signal groups from large to small or from small to large, or the order is determined based on the transmission configuration indication statuses corresponding to the plurality of reference signal groups.

In an eleventh aspect, there is provided an apparatus for beam measurement, comprising: a transceiver module, configured to receive first indication information from a radio access network device, where the first indication information is used to indicate a first spatially related beam set, where the first spatially related beam set includes at least one beam related to a first beam, and the first beam is a serving beam currently used for receiving a physical downlink control channel PDCCH and/or a physical downlink shared channel PDSCH, and the first spatially related beam set is a spatially related beam set corresponding to the serving beam, and the first transmission configuration indication status indicates a first transmission configuration indication status; a processing module for measuring the first beam and the at least one beam of the first set of spatially correlated beams.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the at least one beam is spatially arranged in relation to the first beam, and the processing module is specifically configured to perform measurements on the first beam and a beam of a first set of spatially related beams; the transceiver module is specifically configured to send, to the radio access network device, a measurement result of a first parameter value of the first beam and a measurement result of the first parameter value of a beam in the first set of spatially correlated beams.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the first indication information is further used to indicate at least one second spatially-related beam set, where the second spatially-related beam set includes at least one beam spatially arranged with respect to a second beam, and the second beam is different from the first beam, and when the beam indicated by the first transmission configuration indication status is switched to the second beam, the processing module is further used to determine the second spatially-related beam set as the spatially-related beam set corresponding to the service beam according to the first indication information.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is further configured to receive second indication information from the radio access network device, where the second indication information is used to indicate at least one of the second beams, and the at least one of the second beams is in one-to-one correspondence with the at least one of the second spatially correlated beam sets; the processing module is further specifically configured to determine the second spatially correlated beam set as a spatially correlated beam set corresponding to the service beam according to the first indication information and the second indication information.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is configured to receive third indication information from the radio access network device, where the third indication information is used to indicate the first resource; when the number of beams in the first spatially correlated beam set is greater than N, the processing module is specifically configured to send, to the radio access network device, a measurement result of a first parameter value of the first beam and measurement results of the first parameter value of the beams in the first spatially correlated beam set on the first resource, where a minimum value of the first parameter values of the N beams is greater than or equal to a maximum value of the first parameter values of the N beams in the first spatially correlated beam set except for the N beams, and N is a positive integer.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the processing module is further configured to determine a beam for beam failure recovery or beam failure detection from the measurement of the first parameter value for a beam of the first set of spatially correlated beams.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is further configured to transmit, to the radio access network device, M times a measurement result of an index and a first parameter value of at least one third beam, where the third beam is not the first beam and does not belong to the first spatially correlated beam set, and the first parameter value of the at least one third beam is greater than a first threshold value; the processing module is further configured to add the at least one third beam to the first spatially correlated beam set to obtain an updated first spatially correlated beam set.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is further configured to transmit fourth indication information to the radio access network device, where the fourth indication information indicates at least one fourth beam; the processing module is further configured to update the first spatially correlated beam set to the at least one fourth beam, so as to obtain an updated first spatially correlated beam set.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is further configured to transmit the measurement result of the first parameter value of the at least one fourth beam to the radio access network device.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the processing module is further configured to determine a beam for beam failure recovery or beam failure detection according to the measurement result of the first parameter value of a beam in the updated first set of spatially correlated beams.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is further configured to receive a transmission configuration indication state set from the radio access network device, where the transmission configuration indication state set includes a plurality of transmission configuration indication states, where the plurality of transmission configuration indication states include the first transmission configuration indication state, or a source reference signal of the quasi-co-located QCL Type D of the first transmission configuration indication state is the same as a source reference signal of the quasi-co-located QCL Type D of one of the plurality of transmission configuration indication states, or the source reference signal of the quasi-co-located QCL Type D of the first transmission configuration indication state is QCL with the source reference signal of the quasi-co-located QCL Type D of one of the plurality of transmission configuration indication states.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the transceiver module is further configured to receive fifth indication information from the radio access network device, where the fifth indication information is used to indicate a second transmission configuration indication state, and the second transmission configuration indication state is used to indicate a fifth beam, where the fifth beam belongs to the first spatially dependent beam set and is not a beam indicated by the multiple transmission configuration indication states; the transceiver module is further configured to receive sixth indication information from the radio access network device, where the sixth indication information is used to indicate a third transmission configuration indication state, and the third transmission configuration indication state is used to indicate a sixth beam, where the sixth beam does not belong to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states, and where the fifth indication information indicates that an activation delay of the second transmission configuration indication state is smaller than an activation delay of the sixth indication information indicating the third transmission configuration indication state.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the first parameter value includes a beam received power RSRP or a signal to interference plus noise ratio SINR.

In a twelfth aspect, an apparatus for beam measurement is provided, which includes: a processing module, configured to generate first indication information, where the first indication information is used to indicate a first spatially dependent beam set, where the first spatially dependent beam set includes at least one beam related to a first beam, the first beam is a serving beam currently used for receiving a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH) and indicated by a first transmission configuration indication status, and the first spatially dependent beam set is a spatially dependent beam set corresponding to the serving beam; and the transceiver module is used for sending the first indication information to the terminal equipment.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the at least one beam is spatially arranged in relation to the first beam, and the transceiver module is further configured to receive a measurement result of a first parameter value of the first beam from the terminal device and a measurement result of the first parameter value of a beam in the first set of spatially related beams.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the first indication information further includes at least one second spatially-related beam set including at least one beam spatially arranged in relation to a second beam, the second beam being different from the first beam.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the transceiver module is further configured to send second indication information to the terminal device, where the second indication information is used to indicate at least one of the second beams, and the at least one of the second beams corresponds to the at least one of the second spatially correlated beam sets in a one-to-one manner.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the apparatus further includes: the transceiver module is further configured to send third indication information to the terminal device, where the third indication information is used to indicate the first resource; when the number of beams in the first spatially correlated beam set is greater than N, the transceiver module is specifically configured to receive, on the first resource, a measurement result of a first parameter value from a terminal device and a measurement result of the first parameter value of a beam in the first spatially correlated beam set, where a minimum value of the first parameter values of the N beams is greater than or equal to a maximum value of the first parameter values of the first spatially correlated beam set except for the N beams, and N is a positive integer.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the transceiver module is further configured to receive, M times, measurement results of an index and a first parameter value of at least one third beam from the terminal device, where the third beam is not the first beam and does not belong to the first set of spatially dependent beams, and the first parameter value of the at least one third beam is greater than a first threshold; the processing module is further configured to add the at least one third beam to the first spatially correlated beam set to obtain an updated first spatially correlated beam set.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the transceiver module is further configured to receive fourth indication information from the terminal device, where the fourth indication information is used to indicate at least one fourth beam; the processing module is further configured to update the reference signal included in the first spatially correlated beam set to the at least one fourth beam according to the fourth indication information, so as to obtain an updated first spatially correlated beam set.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the transceiver module is further configured to receive a measurement result of the first parameter value of the at least one fourth beam from the terminal device.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the processing module is further configured to determine a transmission configuration indication state set according to the updated first spatially correlated beam set, where the transmission configuration indication state set includes a plurality of transmission configuration indication states.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the transceiver module is configured to send a transmission configuration indication state set to the terminal device, where the transmission configuration indication state set includes a plurality of transmission configuration indication states, where the plurality of transmission configuration indication states include the first transmission configuration indication state, or a source reference signal of the quasi-co-located QCL Type D of the first transmission configuration indication state is the same as a source reference signal of the quasi-co-located QCL Type D of one of the plurality of transmission configuration indication states, or the source reference signal of the quasi-co-located QCL Type D of the first transmission configuration indication state and the source reference signal of the quasi-co-located QCL Type D of one of the plurality of transmission configuration indication states are QCL.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the transceiver module is further configured to send fifth indication information to the terminal device, where the fifth indication information is used to indicate a second transmission configuration indication state, and the second transmission configuration indication state is used to indicate a fifth beam, where the fifth beam belongs to the first spatially related beam set and is not a beam indicated by the multiple transmission configuration indication states; the transceiver module is further configured to send fifth indication information to the terminal device, where the fifth indication information is used to indicate a third transmission configuration indication state, and the third transmission configuration indication state is used to indicate a sixth beam, where the sixth beam does not belong to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states, and the fifth indication information indicates that the activation delay of the second transmission configuration indication state is smaller than the activation delay of the fifth indication information indicating the third transmission configuration indication state.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the first parameter value includes a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

In a thirteenth aspect, a communication apparatus is provided, including: a processor and a memory; the memory for storing a computer program; the processor is configured to execute the computer program stored in the memory to enable the communication apparatus to perform the communication method according to any one of the first aspect to the sixth aspect.

In a fourteenth aspect, there is provided a computer readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method of any one of the first to sixth aspects.

In a fifteenth aspect, a chip is provided, comprising: a memory for storing a computer program; a processor for reading and executing the computer program stored in the memory, the processor performing the method according to any of the first to sixth aspects when the computer program is executed.

A sixteenth aspect provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method of any of the first to sixth aspects.

Drawings

Fig. 1 shows a schematic diagram of a communication system 100 suitable for use in the method and apparatus for beam switching of the embodiments of the present application.

Fig. 2 shows a schematic diagram of a network element architecture for beam switching suitable for the embodiment of the present application.

Fig. 3 illustrates a typical mobile scenario suitable for use in embodiments of the present application.

Fig. 4 illustrates yet another exemplary motion scenario suitable for use in embodiments of the present application.

Fig. 5 shows a schematic interaction diagram of a method 500 of beam switching suitable for use in embodiments of the present application.

Fig. 6 shows a schematic interaction diagram of a method 600 of beam switching suitable for use in embodiments of the present application.

Fig. 7 shows a schematic interaction diagram of a method 700 of beam switching suitable for use in embodiments of the present application.

Fig. 8 shows a schematic block diagram of a set of transport configuration indication states suitable for use with embodiments of the present application.

Fig. 9 shows a schematic interaction diagram of beam switching suitable for use in embodiments of the present application.

Fig. 10 shows a schematic interaction diagram of beam switching suitable for use in embodiments of the present application.

Fig. 11 shows a schematic interaction diagram of a method 800 of beam switching suitable for use in embodiments of the present application.

Fig. 12 shows a schematic block diagram of a set of transport configuration indication states suitable for use with embodiments of the present application.

Fig. 13 shows a schematic interaction diagram of a method 900 of beam switching suitable for use in embodiments of the present application.

FIG. 14 shows a schematic block diagram of a set of reference signal groups suitable for use with embodiments of the present application.

Fig. 15 shows a schematic interaction diagram of beam switching suitable for use in embodiments of the present application.

Fig. 16 is a schematic block diagram showing an example of a communication apparatus for beam switching according to the present application.

Fig. 17 is a schematic block diagram of another example of a communication apparatus for beam switching according to the present application.

Fig. 18 shows a schematic interaction diagram of a method 1000 of beam measurement suitable for use in embodiments of the present application.

Fig. 19 shows a schematic interaction diagram of a method 1100 of beam measurement suitable for use with embodiments of the present application.

Fig. 20 shows a schematic interaction diagram of a method 1200 of beam measurement suitable for use in embodiments of the present application.

Fig. 21 shows a schematic interaction diagram of a method 1300 of beam measurement suitable for use in embodiments of the present application.

Fig. 22 shows a schematic diagram of the beam profile of the present application.

Detailed Description

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

The embodiment of the application is suitable for a multi-carrier communication system based on wave beams, for example: global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) systems, general Packet Radio Service (GPRS), long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide Interoperability for Microwave Access (WiMAX) communication systems, future fifth generation (5 g) or new radio NR systems, etc.

Fig. 1 shows a schematic diagram of a communication system 100 suitable for use in the method and apparatus for beam switching of the embodiments of the present application. As shown, the communication system 100 may include at least one radio access network device, such as the radio access network device 110 shown in fig. 1; the communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in fig. 1. Radio access network device 110 and terminal device 120 may communicate over a wireless link.

Each communication device, such as radio access network device 110 or terminal device 120 in fig. 1, may be configured with multiple antennas. The plurality of antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. Additionally, each communication device can additionally include a transmitter chain and a receiver chain, each of which can comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art. Therefore, the wireless access network equipment and the terminal equipment can communicate through the multi-antenna technology.

It should be understood that the radio access network device in the wireless communication system may be any device having a radio transceiving function. Such devices include, but are not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (Node B, NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Base Station (e.g., home evolved NodeB, or Home Node B, HNB), a Base Band Unit (BBU), an Access Point (AP) in a Wireless Fidelity (WIFI) system, a Wireless relay Node, a Wireless backhaul Node, a Transmission Point (TP), or a transmission and reception Point (transmission and reception Point), etc., and may also be 5G, such as NR, a gbb in a system, or a transmission Point (TRP or TP), one or a group of antennas (including multiple antennas, NB, or a panel) of a Base Station in a 5G system, or a distributed Node B, such as a Base Band Unit (BBU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may further include a Radio Unit (RU). A CU implements part of the function of a gNB, and a DU implements part of the function of the gNB, for example, the CU implements the function of a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and the DU implements the function of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or the DU + CU under this architecture. It will be appreciated that the radio access network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into Radio Access Network (RAN) devices in an access network (RAN), or may be divided into radio access network (CN) devices in a Core Network (CN), which is not limited in this application.

It should also be understood that terminal equipment in the wireless communication system may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

Communication between radio access network device 110 and terminal device 120 in the communication system shown in fig. 1 may also be represented in another form, as shown in fig. 2, terminal device 120 comprising a processor 121, a memory 122 and a transceiver 123, transceiver 123 comprising a transmitter 1231, a receiver 1232 and an antenna 1233. Radio access network device 110 includes a processor 111, a memory 112, and a transceiver 113, transceiver 113 including a transmitter 1131, a receiver 1132, and an antenna 1133. Receiver 1132 may be used to receive transmission control information via antenna 1133 and transmitter 1131 may be used to send transmission feedback information to radio access network device 110 via antenna 1133. Transmitter 1131 may be configured to transmit transmission control information to terminal device 120 through antenna 1133, and receiver 1132 may be configured to receive transmission feedback information transmitted by terminal device 120 through antenna 1133.

Fig. 3 illustrates a typical mobile scenario suitable for use in embodiments of the present application. As shown in fig. 3, in this scenario, the terminal device moves along an existing road or track, or it can be said that the motion track of the terminal device is relatively determined, the beam on the radio access network device side is also relatively static, and the coverage area of the beam on each radio access network device side is also relatively determined. Even if the influence of environmental reflection and other factors on the beam exists, the beam which can be received by the terminal equipment in one area is relatively determined.

Fig. 4 illustrates yet another exemplary motion scenario suitable for use in embodiments of the present application. As shown in fig. 4, in this scenario, when the terminal device moves on a planned common road or track, the heading of the terminal device is predictable, even if its exact heading path is not known.

It should be noted that, for convenience of description and better illustration of the embodiments of the present application, fig. 3 and fig. 4 are taken as examples to make a brief description of an applicable scenario of the embodiments of the present application, but the applicable scenario of the embodiments of the present application includes, but is not limited to, fig. 3 and fig. 4.

To facilitate understanding of the embodiments of the present application, a brief description of several terms referred to in the present application will be given below.

1. Beam (beam): a beam is a communication resource. The beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beamforming technique or other technical means. The beamforming technique may be embodied as a digital beamforming technique, an analog beamforming technique, a hybrid digital/analog beamforming technique. Different beams may be considered different resources. The same information or different information may be transmitted through different beams. Alternatively, a plurality of beams having the same or similar communication characteristics may be regarded as one beam. One beam may include one or more antenna ports for transmitting data channels, control channels, sounding signals, and the like, for example, a transmission beam may refer to the distribution of signal strength formed in different spatial directions after signals are transmitted through the antenna, and a reception beam may refer to the distribution of signal strength in different spatial directions of wireless signals received from the antenna. It is to be understood that the one or more antenna ports forming one beam may also be seen as one set of antenna ports.

When the low-frequency or intermediate-frequency band is used, signals can be sent in an omnidirectional mode or through a wide angle, when the high-frequency band is used, due to the fact that the carrier wave length of a high-frequency communication system is small, an antenna array formed by a plurality of antenna arrays can be arranged on a sending end and a receiving end, the sending end sends the signals with a certain beam forming weight value, the sending signals form beams with space directivity, meanwhile, the receiving end receives the signals with the antenna array with the certain beam forming weight value, the receiving power of the signals at the receiving end can be improved, and path loss is resisted.

The beams include a transmit beam and a receive beam. The transmit beam may refer to distribution of signal strength formed in different spatial directions after the signal is transmitted by the antenna, and the receive beam may refer to distribution of the antenna array for reinforcing or weakening reception of the wireless signal in different spatial directions.

In the current NR protocol, beams can be represented by a quasi co-location (QCL) relationship at the antenna port. Specifically, the two co-beamformed signals have a QCL relationship with respect to Spatial Rx parameters, i.e., QCL-Type D in the protocol. The beam may be specifically represented in the protocol by identification of various signals, such as a resource index of a channel state information reference signal (CSI-RS), an index of a synchronization signal broadcast channel block (SS/PBCH block or SSB), a resource index of a Sounding Reference Signal (SRS), and a resource index of a Tracking Reference Signal (TRS).

The beam generally corresponds to the resource, for example, when the beam measurement is performed, the radio access network device sends different resources through different beams, the terminal feeds back the measured resource quality, and the radio access network device knows the quality of the corresponding beam. In data transmission, the beam information is also indicated by its corresponding resource. For example, the radio access network apparatus instructs the terminal to receive the beam of the Physical Downlink Shared Channel (PDSCH) through a Transmission Configuration Indication (TCI) field in the Downlink Control Information (DCI).

In addition, in general, one beam corresponds to one reference signal or one TCI or one TRP or one sounding reference Signal Resource Indicator (SRI) (for uplink data transmission), and thus, different beams may also be represented by different reference signals or TCIs or TRPs or SRIs.

For convenience of description, in the embodiments of the present application, reference signals, TCIs, and beams are taken as examples to describe the scheme provided in the embodiments of the present application, and since the reference signals, the TCIs, the TRPs, the SRIs, the resource indexes of the CSI-RS, the indexes of the SS/PBCH block, the resource indexes of the SRS, and the resource indexes of the TRS may all represent beams. Therefore, the reference signals, TCI, beams in the following may also be replaced by TRP, SRI, resource index of CSI-RS, index of SS/PBCH block, resource index of SRS, or resource index of TRS, and the replacement does not change the essence of the method provided by the embodiments of the present application.

2. Quasi-co-location (QCL): the co-location relationship is used to indicate that the plurality of resources have one or more identical or similar communication characteristics, and the identical or similar communication configuration may be adopted for the plurality of resources having the co-location relationship. For example, if two antenna ports have a co-located relationship, the channel large scale characteristic of one port transmitting one symbol can be inferred from the channel large scale characteristic of the other port transmitting one symbol. The large scale features may include: delay spread, average delay, doppler spread, doppler shift, average gain, reception parameters, terminal device received beam number, transmit/receive channel correlation, received angle of arrival, spatial correlation of receiver antennas, angle of arrival (AoA), average angle of arrival, aoA spread, and the like. Specifically, the parity indication is used to indicate whether the at least two antenna ports have a parity relationship: the co-located indication is used to indicate whether the csi reference signals sent by the at least two antenna ports are from the same transmission point, or the co-located indication is used to indicate whether the csi reference signals sent by the at least two antenna ports are from the same beam group.

3. Quasi co-location assumption (QCL assignment): it is assumed whether there is a QCL relationship between the two ports. The configuration and indication of the quasi-co-located hypothesis can be used to assist the receiving end in receiving and demodulating the signal. For example, the receiving end can confirm that the a port and the B port have the QCL relationship, that is, the large-scale parameter of the signal measured on the a port can be used for signal measurement and demodulation on the B port.

4. Spatial quasi-parity (spatial QCL): spatial QCLs can be considered as a type of QCL. Two angles can be understood for spatial: from the transmitting end or from the receiving end. From the transmitting end, if two antenna ports are spatially quasi-co-located, it means that the corresponding beam directions of the two antenna ports are spatially identical. From the perspective of the receiving end, if it is said that the two antenna ports are spatially quasi-co-located, it means that the receiving end can receive signals transmitted by the two antenna ports in the same beam direction. Two signals are transmitted from two different antenna ports, and the experienced large-scale characteristics are the same, so that the two antenna ports are regarded as QCL; meaning that the channel estimation results obtained from one antenna port are available for the other antenna port to facilitate receiver processing.

5. Reference Signal (RS): according to the protocol of long term evolution LTE/NR, in the physical layer, uplink communication includes transmission of an uplink physical channel and an uplink signal. The uplink physical channel includes a random access channel (PRACH), an uplink control channel (PUCCH), an uplink data channel (PUSCH), and the like, and the uplink signal includes a channel sounding signal (SRS), an uplink control channel demodulation reference signal (PUCCH-DMRS), an uplink data channel demodulation reference signal (PUSCH-DMRS), an uplink phase noise tracking signal (PTRS), an uplink positioning signal (RS), and the like. The downlink communication includes transmission of a downlink physical channel and a downlink signal. The downlink physical channel includes a broadcast channel (PBCH), a downlink control channel (PDCCH), a downlink data channel (PDSCH), etc., and the downlink signal includes a Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS), a downlink control channel demodulation reference signal (PDCCH-DMRS), a downlink data channel demodulation reference signal (PDSCH-DMRS), a phase noise tracking signal (PTRS), a channel state information reference signal (CSI-RS), a cell signal (cell reference signal, CRS) (NR not), a fine synchronization signal (time/frequency feedback reference, TRS) (LTE not), a location/NR positioning signal (positioning RS), etc.

6. Transmission Configuration Indicator (TCI): the TCI may be configured to indicate QCL information of a physical downlink control channel (PDCCH for short) and a physical downlink shared channel (PDSCH for short), and specifically may be configured to indicate which reference signal satisfies a QCL relationship with a DMRS of the PDCCH/PDSCH, and the terminal may receive the PDCCH/PDSCH by using a spatial parameter that is the same as or close to a spatial parameter of the reference signal.

The TCI may specifically indicate which reference signal the DMRS of the PDCCH/PDSCH satisfies the QCL relationship with by reference signal index.

Further, the TCI state may be globally configured. In the TCI states configured for different cells and different BWPs, if the indexes of the TCI states are the same, the corresponding TCI states are also configured the same.

As an example, the TCI state mainly includes the type of QCL (for example, two different QCL types may be configured), and a reference signal of each QCL type, and the reference signal specifically includes a Carrier Component (CC) Identifier (ID) or a bandwidth part identifier (BWP ID) where the reference signal is located, and a number (ssb-index or CSI-RS resource index) of each reference signal resource.

The configuration method of TCI state in the existing protocol is as follows:

wherein, the QCL type division can be as follows:

QCL typeA: delay, doppler shift, delay spread, doppler spread;

QCL typeB: doppler shift, doppler spread;

QCL typeC: time delay, doppler shift;

QCL typeD: and spatial domain receiving parameters, namely receiving beams.

7. TCI state (QCL indicating method): the QCL is configured by the upper layer in the protocol through the TCI-State, and parameters of the TCI-State are used for configuring a quasi-co-location relation between one or two downlink reference signals and demodulation reference signals (DMRS) of the PDSCH. The transport configuration indication is configured by RRC, referred to as TCIstate in the configuration signaling. After RRC configuration, a radio access network device sends a media access control-control element (MAC-CE) to activate one or more TCI states, which are currently generally 8 TCI states. This activated 8 TCI states is referred to herein as an activated TCI list. The radio access network device may further transmit a DCI indicating activation of one of the TCI states in the TCI list.

The TCI includes one or two QCL relationships that characterize the signal/channel that is currently to be received, with some consistency relationship between some reference signal that is known earlier. If QCL relationships exist, the UE may inherit the reception parameters of a previous reception of a reference signal to receive the upcoming signal/channel.

The TCI state includes an ID and at most two QCL relations (in the current 3GPP Rel-17 protocol, one of which must be type D if there are two QCLs), the QCL relation indicating a reference signal under a BWP (partial Bandwidth part) of a cell.

Currently, when a service beam is switched between a radio access network device and a terminal device, the terminal device mostly measures a candidate beam in advance, the radio access network device issues a signaling to trigger a beam indication, and the signaling needs to be confirmed after the beam switching is successful. For example, in one implementation, the radio access network device triggers the terminal device to measure and report a new reference signal by issuing a CSI request to implement continuous beam switching, for the terminal device, there is a time delay for waiting for the CSI request, and for the radio access network device, the overhead of a PDCCH is also required for issuing the CSI request each time. For example, in another implementation, the beams of the control channel are indicated based on DCI signaling, and the updating of all channel beams is completed using one TCI state indication. In this manner, there still exists a DCI processing delay and a hybrid automatic repeat request (HARQ) delay.

A series of processes required by the beam switching method are complex, and unavoidable signaling overhead and processing delay exist, which affects the speed and efficiency of beam switching. Therefore, how to simplify the beam switching process and reduce the signaling overhead and processing delay in the beam switching process becomes a problem to be solved urgently.

The method 500 for switching beams according to the embodiment of the present application is described in detail below with reference to fig. 5. Fig. 7 is a schematic interaction diagram of a method 500 of the present application.

S501, the radio access network device sends a first transmission configuration indication state set to the terminal device, where the first transmission configuration indication state set includes multiple transmission configuration indication states, and the multiple transmission configuration indication states have an order.

It should be noted that the first transmission configuration indication state set and the corresponding sequence may be determined according to a possible movement track of the terminal device. The condition for triggering the radio access network device to configure the terminal device to perform beam switching according to the first transmission configuration indication state set may be the type of the terminal device, for example, the terminal device is a high-speed rail; alternatively, the route may be a specific route, or may be other scenes, and this is not limited in this application.

As an example, each of the plurality of first transmission configuration states herein indicates that the state is configured by the radio access network device with a corresponding ID, and the RRC layer may be dedicated to configure the above sequence through a new signaling, for example, may configure:

TCIsequence：{

TCIsequence ID:0

TCI-list：{

TCI state#10

TCI state#4

TCI state#7

TCI state#12

…

}

s502, the terminal device measures one or more reference signals, where the one or more reference signals include a reference signal corresponding to the first transmission configuration indication state.

It should be noted that, the terminal device may measure one reference signal or may measure multiple reference signals, where the one or more reference signals include the reference signal corresponding to the first transmission configuration indication state, which is a precondition for continuing to perform step S503.

S503, the terminal device sends the measurement result of the first parameter value of the one or more reference signals to the radio access network device.

It should be understood that the measurement result herein may be the result of all measured csi, or may be an event report performed after the terminal device makes a decision according to the measured csi result.

As an example, when the terminal device measures one reference signal, the terminal device may directly report a result of the measured channel state information of the one reference signal, or may determine whether the result of the channel state information of the one reference signal is greater than a first preset value, and then send the determined result as a measurement result to the radio access network device.

As an example, when the terminal device measures multiple reference signals, the terminal device may directly report the measured results of the channel state information of the multiple reference signals, or may determine, according to the measured results of the channel state information of the multiple reference signals, a reference signal with a maximum correlation parameter value of the channel state information in the multiple reference signals, and report the reference signal identifier with the maximum correlation parameter value to the radio access network device.

S504, when the measurement result satisfies a first preset condition, the terminal device and the radio access network device switch the currently applied transmission configuration indication state to the first transmission configuration indication state, where the first transmission configuration indication state is a next transmission configuration indication state of the currently applied transmission configuration indication state based on the first order.

It should be understood that, when the terminal device measures a reference signal in S502, the first preset condition is that the first parameter value of the reference signal is greater than the first preset value, and the reference signal is the reference signal corresponding to the first transmission configuration indication state. Alternatively, it may be understood that, when the terminal device only measures one reference signal, the measured one reference signal is the reference signal corresponding to the first transmission configuration indication state, and as long as the measured first parameter value is greater than the first preset value, the first preset condition is satisfied. When the terminal device measures a plurality of reference signals in S502, the first parameter value of the reference signal corresponding to the first transmission configuration indication state is the largest among the plurality of reference signals. Alternatively, it may also be understood that the plurality of reference signals measured by the terminal device include a reference signal corresponding to the first transmission configuration indication state, and the first parameter value of the reference signal is required to be larger than the first parameter values of other reference signals in the plurality of reference signals.

According to the method and the device for triggering the beam switching, the terminal equipment does not need to perform the beam reporting and the beam switching according to the beam indication issued by the wireless access network equipment, the performance of the terminal equipment in a mobility scene with a relatively determined track is improved, the time delay of the beam switching and the time delay of the beam measurement result reporting are reduced, the terminal equipment can communicate under the beam which can provide the optimal communication performance for the terminal equipment more quickly, the wireless access network equipment can acquire the channel information of the terminal equipment under the new service beam more quickly, and the MIMO transmission is more rapid.

The method 600 for switching beams according to the embodiment of the present application is described in detail below with reference to fig. 6. Fig. 6 is a schematic interaction diagram of a method 600 of the present application.

S601, the radio access network device and the terminal device acquire a first reference signal group set, wherein the first reference signal group set comprises a plurality of reference signal groups, and the plurality of reference signal groups exist in sequence.

It should be understood that the reference signal set referred to in this application may be understood as a measurement configuration, and specifically includes a plurality of measurement reporting configurations, where each measurement reporting configuration includes at least two reference signals to be measured, and the reference signals are of the SSB or CSI-RS type. The measurement configuration further includes a configuration of a report quantity, where the report quantity may be L1-SINR, or L1-RSRP, or may also be other report quantities, which is not limited in this application. Alternatively, in a possible implementation, the set of reference signal groups referred to in this application may include a special measurement reporting configuration, where the measurement reporting configuration is composed of multiple sets of reference signal measurement reports, and the multiple sets have a sequential relationship. Each group of reference signal measurement reporting configuration comprises at least two reference signals needing to be measured, the type of the reference signals is SSB or CSI-RS, and the measurement configuration also comprises the configuration of reporting quantity.

S602, the terminal device measures a plurality of reference signals, where the plurality of reference signals include a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group set.

It should be understood that the second reference signal may be one or more, that is, when the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the reference signal corresponding to an applicable transmission configuration indication state may be one or more.

S603, the terminal device sends the measurement result of the first parameter values of the multiple reference signals to the radio access network device.

It will be appreciated that the measurement may be of a first parameter value of the second reference signal which is greater than the first parameter value of the first reference signal, or may be an identification of the reference signal for which the first parameter value is the largest.

S604, when the measurement result meets a second preset condition, the terminal device and the radio access network device switch the currently applied transmission configuration indication state to the transmission configuration indication state corresponding to the second reference signal.

It is to be understood that the second predetermined condition may be that the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal.

As an example, in S603, the terminal device may report to the radio access network device by using a bit whether a first parameter value of the second reference signal is greater than a first parameter value of the first reference signal, and when the second preset condition is met, the radio access network device and the terminal device perform corresponding beam switching.

As an example, the terminal device may only report, in S603, an identifier of a reference signal with a largest first parameter value in the measured multiple signals to the radio access network device, and when the reference signal corresponding to the identifier is a second reference signal, the second preset condition is also met.

According to the embodiment of the application, by defining the reference signal group, the terminal equipment does not need to report the beam and switch the beam according to the beam indication issued by the wireless access network equipment, the beam switching process is simplified, the performance of the terminal equipment in a mobility scene with a relatively determined track is improved, the time delay of beam switching and the time delay of reporting the beam measurement result are reduced, the terminal equipment can communicate under the beam which can provide the optimal communication performance for the terminal equipment more quickly, the wireless access network equipment can acquire the channel information of the terminal equipment under a new service beam more quickly, and MIMO transmission is more rapid.

The method 700 for switching beams according to the embodiment of the present application is described in detail below with reference to fig. 7. Fig. 7 is a schematic interaction diagram of a method 700 of the present application.

S701, the wireless access network equipment configures a group of TCI states for the UE, and the TCI states are used for indicating a beam switching sequence which is used for indicating the UE to perform beam switching in sequence.

It should be understood that the set of TCI states herein may be a first set of transport configuration indication states including a plurality of TCI states. Examples of two possible "sets of TCI states" are shown in fig. 8 (a) and (b), where there are 5 different TCI states, identified by numbers 1 through 5, respectively. It should be noted that "a set of TCI states" may also be expressed in other forms, and this application is not limited to this. Each TCI state itself carries a number or identity, such as TCI1, where the number or identity is assigned by the radio access network device for each TCI state when the TCI state is configured for the UE. The UE may sequentially apply multiple TCI states of a set of TCI states when performing beam switching in sequence. And the sequence in which the UE applies the multiple TCI states is also configured as the UE by the radio access network device. Specifically, there are various ways in which the radio access network device configures the UE with the above-mentioned sequence applying multiple TCI states, and two possible ways are described below with two examples.

As a possible way, the order is indicated by the rank order of the TCI states configured by the radio access network device in the first transmission configuration indication state set. As an example, the first transmission configuration indicates that the order of arrangement of the TCI states in the state set is as shown in (a) of fig. 8, and then the order in which the UE applies a plurality of TCI states is as shown in (c) of fig. 8. Fig. 8 (c) shows a sequence of TCI states, which are sequentially switched by the UE as indicated by arrows. Specifically, the TCI state currently applied by the UE is TCI1, and when the condition for switching beams is satisfied, the TCI state currently applied is switched to TCI2, and the current beam is switched to the beam corresponding to TCI 2.

A second possible way, the order is indicated by the index of the TCI status configured by the radio access network device. The index here may be a number other than the number of the TCI state itself. As an example, the first transmission configuration indicates that the order of the TCI states in the state set is as shown in (b) of fig. 8, and the radio access network device further indicates indexes of a plurality of TCI states, an index of TCI1 is 4, an index of TCI2 is 1, an index of TCI3 is 3, an index of TCI4 is 5, and an index of TCI5 is 2, and then the UE switches in sequence in order of applying the plurality of TCI states as shown in (c) of fig. 8, in sequence as indicated by arrows. The specific switching manner is the same as above.

S702, the UE measures one or more beams to obtain a measurement result.

It is to be understood that the one or more beams measured in S702 may or may not match the first set of transmission configuration indication states. With respect to the one or more beams measured in S702 matching the first transmission configuration indication state set, it may be understood that the one or more beams measured by the UE in S702 include a beam corresponding to the currently applied TCI state at the next TCI state in the first transmission configuration indication state set. Further explanation is provided below on whether the one or more beams match the first set of transmission configuration indication states, respectively.

Possibly, the UE measures one beam to obtain the first parameter value of the one beam.

As an example, the beam currently applied by the UE corresponds to TCI1 in the first transmission configuration indication state set of the example of (a) in fig. 8, and then the beam of the next application corresponds to TCI2 in the order indication of the first transmission configuration indication state set. Then one beam measured by the UE is matched with the first transmission configuration indication state set when the one beam measured by the UE is the beam corresponding to TCI2, otherwise, the one beam measured by the UE is not matched.

In a possible case two, the UE measures multiple beams in S702 to obtain first parameter values of the multiple beams.

As an example, the beam currently applied by the UE corresponds to TCI1 in the first transmission configuration indication state set of the example of (a) in fig. 8, and then the beam of the next application corresponds to TCI2 in the order indication of the first transmission configuration indication state set. Then the plurality of beams measured by the UE match the first set of transmission configuration indication states when the plurality of beams measured by the UE includes a beam corresponding to TCI2, and otherwise do not match.

And S703, reporting the measurement result of the one or more beams to the wireless access network equipment by the UE.

It should be understood that the measurement result reported by the UE in S703 may or may not match the first transmission configuration indication state set. As for the matching between the measurement result reported in S703 and the first transmission configuration indication state set, it can be understood that the measurement result reported in S703 for the one or more beams satisfies a predetermined condition related to the first transmission configuration indication state set. The preset conditions will be further described below.

A possible case one corresponds to the possible case one in S702, and when one beam measured by the UE matches the first transmission configuration indication state set, the preset condition is that the first parameter value of the one beam is greater than the first preset value.

As an example, the beam currently applied by the UE corresponds to TCI1 in the first transmission configuration indication state set of the example of (a) in fig. 8, and then the beam of the next application corresponds to TCI2 in the order indication of the first transmission configuration indication state set. In S702, the UE measures a beam corresponding to TCI2 to obtain RSRP or SINR of the beam. The preset condition is that the obtained RSRP or SINR is larger than a corresponding preset value. Or, the UE may further obtain a Rank Indicator (RI), a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), and a Layer Indicator (LI) of the beam, where the preset condition may also be that the obtained parameter value is greater than a corresponding preset value.

A second possible case corresponds to the second possible case in S702, and when the multiple beams measured by the UE match the first transmission configuration indication state set, the preset condition is that a beam with a maximum first parameter value among the multiple beams corresponds to a next TCI state in the first transmission configuration indication state set, or the preset condition may be that a beam with a maximum first parameter value among the multiple beams is a source reference signal source RS of QCL Type D in the next TCI state in the first transmission configuration indication state set.

The beam currently applied by the UE corresponds to TCI1 in the first transmission configuration indication state set of the example of (a) in fig. 8, and then the beam next applied corresponds to TCI2 in the order indicated by the first transmission configuration indication state set. As an example, the UE performs measurement on a plurality of beams in S702, and obtains RSRP or SINR of the plurality of beams. The preset condition is that the maximum wave beam of RSRP or SINR is the source RS of QCL Type D in TCI 2. As an example, the preset condition is that the maximum RSRP or SINR beam and TCI2 conform to a preconfigured correspondence. For example, when the radio access network device configures the first transmission configuration indication state set for the UE, the radio access network device also configures corresponding beams for the multiple TCI states, respectively. For example, it is assumed that the radio access network device configures, for the UE, a first identifier of a beam corresponding to TCI2, where the first identifier is an ID of a reference signal corresponding to the beam, and the first identifier may be, for example, a CSI-RS resource ID of a CSI-RS, an SSB index of an SS/PBCH, or an ID of another reference signal, which is not limited in this application. Then, if the current TCI state is to be switched to TCI2, the preset condition is that the ID of the beam with the largest RSRP or SINR in the measurement results reported by the UE is the first identifier.

It should be noted that, when the one or more beams measured in S702 are matched with the first transmission configuration indication state set and the measurement result reported in S703 is matched with the first transmission configuration indication state set, steps S704a and S705a are continued, otherwise steps S704b and S705b are performed.

S704a, the radio access network device and the UE correspondingly switch the currently applied TCI state to the next TCI state in the first transmission configuration indication state set.

S705a, the radio access network device and the UE correspondingly apply the beam corresponding to the next TCI status in the first transmission configuration indication status set.

As an example, step S705a is performed after a first time period has elapsed after step S703.

It should be understood that the first time period may be X milliseconds (ms) or Y Orthogonal Frequency Division Multiplexing (OFDM) symbols, or may be other representations, which are not limited in this application.

It should be noted that, for the UE, the beam in S705a may be a downlink receive beam, an uplink transmit beam, or an uplink transmit beam and a downlink receive beam, where the uplink transmit beam and the downlink receive beam may be the same or different corresponding to the first time period.

Illustratively, if the TCI status is the existing common TCI, used for both uplink and downlink channels/signals, the UE updates both uplink and downlink beams; and if the TCI state is a downlink or uplink TCI state, the UE only updates the downlink or uplink beam.

After S705a is completed, S702 is executed again, and when the condition for switching beams is satisfied, beam switching is performed, and the process loops. If S702 and S703 always satisfy the two matching conditions, beam switching is always performed according to the first transmission configuration indication state set configured by the radio access network device in S701 and the corresponding application sequence; if the matched condition is not satisfied by S702 or S703 in the loop process, S704b and S705b are executed.

As an example, the TCI sequence configured by the radio access network device in S701 is as shown in (c) in fig. 8, and the UE and the radio access network device circularly execute the flow chart of steps S702 to S705a for indicating the state set for the first transmission configuration in S701 as shown in fig. 9.

Optionally, the method 700 further includes associating triggers for measurement and reporting of Channel State Information (CSI) with the TCI state sequence. When one TCI state in the sequence of TCI states is switched to the current TCI state, the measurement configuration and the reporting configuration associated with the next TCI state in the sequence are automatically triggered.

As an example, according to the sequence of the TCI state shown in (c) of fig. 8, as shown in fig. 9, when the current TCI state is a TCI3, the UE may be triggered to measure and report the beam corresponding to the TCI4, specifically, the UE may measure and report various information of the reference signal corresponding to the beam corresponding to the TCI4, for example, the information may include Rank Indicator (RI), channel Quality Indicator (CQI), precoding Matrix Indicator (PMI), layer Indicator (LI), RSRP, SINR, and the like.

S704b, the radio access network device sends a beam indication to the UE. The indication may be sent in the form of DCI or MAC-CE signaling.

As an example, it is assumed that the order of applying the TCI state in the first transmission configuration indication state set configured to the UE in step S701 by the radio access network apparatus is as shown in (c) of fig. 8. As shown in (b) of fig. 10, after the UE switches the current TCI state to TCI2, a beam corresponding to TCI6 is reported to the radio access network device, and then the order in which the UE applies the TCI state is shown in (a) of fig. 10, which is not consistent with the application order configured by the radio access network device, so that the UE does not autonomously switch the TCI state to TCI3, and is no longer executed according to the foregoing methods from S702 to S705a, but the radio access network device issues an indication of beam switching to update the activated TCI state, which is used to receive a PDCCH and/or a PDSCH, and optionally, is also used to send an SRS, a PUCCH, and a PUSCH.

S705b, the UE and the radio access network device perform beam switching accordingly.

According to the embodiment of the application, the performance of the UE in a mobility scene with a relatively determined track is improved by defining a new beam switching method and a method for triggering reporting, the time delay of beam switching and the time delay of reporting a beam measurement result are reduced, the UE can communicate with the beam which can provide the optimal communication performance for the UE more quickly, the wireless access network equipment can acquire the channel information of the UE under the new service beam more quickly, and MIMO transmission is more quick.

The method 800 for switching beams according to the embodiment of the present application is described in detail below with reference to fig. 11. Fig. 11 is a schematic interaction diagram of a method 800 of the present application.

S801, configuring a plurality of transmission configuration indication state sets for the UE by the wireless access network equipment, wherein each transmission configuration indication state set comprises a plurality of TCI states. Similar to S701, each transmission configuration indicates an order of application of the TCI states in the state set, which is also configured by the radio access network device. Thus, the multiple transport configuration indication state sets herein may be used to indicate multiple possible TCI state sequences.

As an example, as shown in fig. 12, (a) and (b) in fig. 12 respectively show two TCI status sequences that the above-mentioned multiple transmission configuration indication status sets may indicate. The radio access network equipment sends a first transmission configuration indication state set to the UE, the first transmission configuration indication state set has a first sequence, and the sequence of TCI states indicated by the first transmission configuration indication state set is shown in the figure (a). The radio access network device also sends a second transmission configuration indication state set to the UE, the transmission configuration indication state set having a second order, the second transmission configuration indication state set indicating a TCI state sequence as shown in fig. (b).

It will be appreciated that it is also possible for the radio access network device to send a plurality of second transmission configuration indication state sets to the UE, each second transmission configuration indication state set having a corresponding order. For example, the TCI sequence indicated by the different second transmission configuration indication state set may be determined according to a possible motion trajectory of the UE.

S802, the UE measures one or more reference signals and reports the measurement result to the wireless access network equipment.

Step S802 is similar to steps S702 and S703 in method 700, except that method 700 is directed to a first set of transmission configuration indication states when considering whether S702 and S703 simultaneously satisfy the matching condition; however, whether S802 in the method 800 satisfies the matching condition considers whether one or more beams measured in S802 match one transmission configuration indication state set of the plurality of transmission configuration indication state sets, and whether the measurement result of one or more beams reported in S802 match one transmission configuration indication state set of the plurality of transmission configuration indication state sets.

When S802 satisfies the above two matching conditions, the process proceeds to step S803a, whereas the process proceeds to step S803b.

S803a, the UE performs beam switching according to one transmission configuration indication state set of the plurality of transmission configuration indication state sets, and the radio access network device also performs beam switching accordingly.

Here, one of the plurality of transmission configuration indication state sets is determined when two matching conditions are satisfied in S802.

The specific implementation flow of S803a is similar to S704a and S705 a.

Similarly, after the step S803a is finished, the step S802 is continued, and when the condition for switching beams is satisfied, the beam switching is performed, and the process is repeated. If S802 always satisfies the two matching conditions, beam switching is always performed according to the multiple transmission configuration indication state sets configured by the radio access network device in S801 and the corresponding application order; if the matching condition is not satisfied in S802 during the loop, S803b is executed.

And S803b, respectively carrying out beam switching between the UE and the wireless access network equipment based on the beam indication.

It should be understood that, in the TCI state sequence including the current TCI state indicated by the plurality of transmission configuration indication state sets, when the beam with the largest relevant parameter reported by the UE in S802 does not have a corresponding relationship with the next TCI state of the current TCI state in any of the TCI state sequences, the UE cannot autonomously perform beam switching. Or, it can be said that the beam with the strongest related parameter reported by the UE does not belong to any of the TCI state sequences indicated in S801, and the UE cannot autonomously perform beam switching.

As an example, the radio access network device indicates two TCI status sequences shown in (a) and (b) in fig. 12 to the UE in S701. Assuming that the currently applied TCI state is TCI1, or assuming that the TCI state initially activated by the UE is TCI1, when the reference signal with the maximum RSRP reported by the UE corresponds to TCI6, the UE satisfies the TCI state preconfigured by the TCI state sequence shown in (b) in fig. 12. The UE switches the current TCI status to TCI6 according to S803a based on the configuration. Subsequently, when S802 is performed in a loop, if the reference signal with the maximum RSRP reported by the UE corresponds to the TCI7, the beam switching is continued according to the TCI state sequence. Otherwise, the sequential beam switching is not performed according to the TCI state sequence, but S803b is performed. It should be noted that even if the reference signal with the maximum RSRP reported by the UE corresponds to TCI3, the beam switching cannot be performed again according to the TCI state sequence shown in (a) in fig. 12.

According to the embodiment of the application, when the movement track of the UE is uncertain, the wireless access network equipment predictively configures a plurality of TCI state switching sequences for the UE based on the obtained potential movement track of the UE, and when a wave beam capable of covering the real action track of the UE conforms to any one of the TCI state switching sequences, the wave beam can be switched autonomously, so that the signaling overhead and the wave beam switching time delay are reduced.

The method 900 for switching beams according to the embodiment of the present application is described in detail below with reference to fig. 13. Fig. 13 is a schematic interaction diagram of a method 900 of the present application.

S901, a UE and a radio access network device acquire a first reference signal group set, the first reference signal group set comprises a plurality of reference signal groups, and an order exists among the plurality of reference signal groups.

It should be understood that the first set of reference signals and the corresponding order thereof may be determined according to a relative determined movement trajectory of the UE.

As an example, (a) in fig. 14 shows one possible first reference signal group set, and the order of the reference signal groups in the first reference signal group set is indicated by an arrow direction. As can be seen from the figure, there are two reference signals in each reference signal group, and two consecutive reference signal groups in sequence respectively include 1 identical reference signal. For example, the order of the first set of reference signal groups may be determined according to a relatively determined movement trajectory of the UE.

S902, the UE measures a plurality of reference signals, including the reference signals in the first reference signal group. The first reference signal group here is one reference signal group in the first reference signal group set.

S903, the UE reports measurement results of the first parameter values of the multiple reference signals.

There are various ways to report the measurement result of the first parameter values of the multiple reference signals.

In a first possible manner, when there are only two reference signals in the first reference signal group, and the UE measures that the first parameter value of the reference signal corresponding to the next candidate beam in the first signal group is better than the first parameter value of the reference signal corresponding to the current serving beam, 1 bit may be used to report the measurement result.

For example, the reported measurement result may be carried in a PUCCH channel based on Uplink Control Information (UCI). Or carried in the PUSCH based on MAC-CE signaling.

As one example, as shown in (a) of fig. 14, the first reference signal group includes RS0 and RS1, and the next reference signal group of the first reference signal group is the second reference signal group including RS1 and RS 2 on an order basis. When the plurality of reference signals measured by the UE include RS0 and RS1, and the first parameter value of the RS1 is better than the first parameter value of the RS0, the UE may report the result using 1 bit.

In a second possible manner, when there are more than or equal to 2 reference signals in the first reference signal group, and the UE measures that the first parameter value of the reference signal in the first reference signal group except the reference signal corresponding to the current serving beam is better than the first parameter value of the reference signal corresponding to the current serving beam, the UE reports the measurement result to the radio access network device. Specifically, when there are only 1 other reference signal, the UE reports the ID of the other reference signal to the radio access network device, and when there are a plurality of other reference signals, the UE reports the ID of the reference signal with the largest corresponding first parameter value in the other reference signals to the radio access network device.

In a possible third manner, the UE reports the measurement result in the possible first manner or the possible second manner N times, and after the UE reports N times, the step S904 is performed. As an example, the first set of reference signal groups is shown in (a) in fig. 14, the process of beam switching is shown in fig. 15, where when the first parameter value of RS 0 is greater than the first parameter value of RS 1, the UE reports RS 0, then, when the first parameter value of RS 1 is greater than the first parameter value of RS 0, the UE reports RS 1, and after reporting N times, the UE and the radio access network device switch the beam corresponding to RS 1 to the current beam.

In a possible manner four, regarding the possible manner one and the possible manner two, further, the radio access network device may perform step S904 after receiving a period of time of the reported measurement result, where the period of time may be several milliseconds; or, the radio access network device may send acknowledgement feedback information to the UE after receiving the reported measurement result, and perform step S904 after the UE receives the acknowledgement feedback information, where the acknowledgement feedback information may be an Acknowledgement Character (ACK). Further, after each report of the UE, the radio access network device sends a feedback confirmation message to the UE.

S904a, the radio access network device and the UE switch beams together.

S905a, the UE measures a plurality of reference signals, the plurality of reference signals including reference signals in a second set of reference signals, the second set of reference signals being order-based, the first set of reference signals being a next set of reference signals in the first set of reference signals.

Note that, if the plurality of reference signals measured in step S902 does not include the reference signals in the first reference signal group, S904b and S905b are performed.

S904b, the radio access network device performs beam indication to the UE.

As shown in fig. 14 (b), each reference signal group has a correspondence relationship with a TCI status, and when the radio access network device indicates to the UE a TCI status to be applied next, the UE determines a candidate next reference signal group according to the correspondence relationship.

The correspondence may be such that the reference signal of the first order in each reference signal group corresponds to the TCI state.

And S905b, the wireless access network equipment and the UE switch beams based on the beam indication. In addition, the method 900 further includes:

in S901, the terminal device and the radio access network device acquire other reference signal group sets in addition to the first reference signal group set, and there is an order for each reference signal group set. Each set of reference signal groups and their corresponding order may be determined according to a possible movement trajectory of the UE. In S902, the plurality of reference signals measured by the terminal device may also include reference signals in a reference signal group in another reference signal group set.

According to the embodiment of the application, the reference signal group is defined, and the specific conditions of switching the beams after the measurement result of the reference signal is reported are defined, such as a mechanism of reporting and confirming feedback for multiple times, so that the problems of ping-pong effect and missed detection of the reported information by the wireless access network equipment are solved, the delay of beam switching and the delay of reporting the measurement result of the beams are reduced while the UE and the wireless access network equipment can synchronously switch the service beams, the UE can communicate with the beams which can provide the optimal communication performance for the UE more quickly, the wireless access network equipment can acquire the channel information of the UE under the new service beams more quickly, and the MIMO transmission is more rapid. Further, by corresponding the reference signal group to the transmission configuration indication state, the reference signal group can be updated with the update of the transmission configuration indication state.

The method 1000 for beam measurement according to the embodiment of the present application is described in detail below with reference to fig. 18. Fig. 18 is a schematic interaction diagram of a method 1000 of the present application.

S1001, the radio access network device sends first indication information to the terminal device, and accordingly, the terminal device receives the first indication information from the radio access network device, where the first indication information is used to indicate one or more spatially correlated beam sets.

Wherein the one or more spatially related beam sets comprise a first spatially related beam set comprising at least one beam related to a first beam currently used for receiving a physical downlink control channel, PDCCH, and/or a physical downlink shared channel, PDSCH, indicated by a first TCI state.

It should be understood that, based on the correspondence of the beam, the TCI state, and the reference signal, the expression related to the beam herein may be replaced by the expression related to the TCI state or the reference signal accordingly.

Taking the example that the first beam, the first TCI state, and the first reference signal correspond to each other, the first TCI state is used to determine that the receiving beam of the PDCCH and/or the PDSCH is the first beam, and the first reference signal may be a source reference signal directly serving as QCL Type D of the first TCI state, or the first reference signal and the source reference signal of QCL Type D of the first TCI state may be QCL.

Illustratively, the first reference signal may be an SSB.

It will also be appreciated that the first set of spatially related beams is a set of beams related to the first beam, for example a set of at least one beam related in spatial arrangement to the first beam. By way of example, spatially arranged correlation herein may be understood as an angle between the pointing direction of any one beam of the first set of spatially correlated beams and the pointing direction of the first beam being smaller relative to an angle between the pointing direction of any one beam of the first set of spatially correlated beams and the pointing direction of the first beam. Alternatively, the spatial arrangement relationship here can be understood from the radio access network device side, for example, and is described below with the aid of fig. 22.

Fig. 22 (a) shows a typical beam distribution diagram on the radio access network device side. Each circle in the figure may represent a beam, and the number in each circle is for convenience of the following description and does not limit the method of the present application. All circles in the figure are beams transmitted by the radio access network device, and the arrangement of the circles in the figure may be understood as a spatial arrangement or a spatial orientation of the beams when the beams are transmitted from the radio access network device. For example, the circle 13 is adjacent to the

circles

5, 12, 14, 21 in the figure, and it can be understood that the beam represented by the circle 13 is spatially correlated with the beam represented by the

circles

5, 12, 14, 21 when the beams are emitted from the radio access network device, that is, the

beams

5, 12, 14, 21 are adjacent to the beam 13, respectively, and the angle of departure (AOD) between the beam directions is small; the other beams are non-adjacent beams to beam 13, with a larger AOD between beam directions.

A spatially dependent set of beams here may be understood as beams that are spatially arranged in relation to the current serving beam (the beam on which the current UE receives PDCCH and/or PDSCH signals), for example, the current beam is used to characterize the resources carrying the first SSB/CSI-RS, the current beam is used to characterize the resources carrying the second SSB/CSI-RS, and the resources carrying the first SSB/CSI-RS received by the terminal device are spatially related to the resources carrying the second SSB/CSI-RS.

It should be noted that there are many ways to determine the spatially correlated beams, and several possible examples are given below, but the present application is not limited thereto.

(1) The wireless access network device looks from the transmitting end that the beam related to the current service beam is the spatial correlation beam.

As an example, if the serving beam of the current UE is beam No. 20, the radio access network device further configures a spatially correlated beam, which may include a beam No. 19,12,21,28 as shown in (b) in fig. 22, or a beam No. 11,12,13,21,29,28,27,19 as shown in (c) in fig. 22.

It will be appreciated that in general, the serving beam is the beam with the best beam quality that the terminal device can receive during a period of time, after which time the better likelihood of the beam quality of the beam associated with the serving beam in spatial arrangement is higher for the terminal device in a mobility scenario.

(2) The wireless access network equipment determines the space-dependent beams based on the historical reported information of the UE.

As an example, if the UE indicates in the historical report information that certain parameters of beam 8 in fig. 22 satisfy the requirement of the spatially related beam (which may be, for example, that RSRP of beam 8 satisfies a certain threshold, or that the difference between RSRP of beam 8 and RSRP of beam 20 satisfies a certain threshold), beam 8 may be taken as the spatially related beam of beam 20 even if beam 8 and beam 20 are not spatially related.

For example, the beam 8 may be transmitted to the terminal device after being reflected by an object, so that the beam 8 received by the terminal device in a period of time meets the above requirements.

(3) The set of spatially correlated beams is determined by means of artificial intelligence.

It should be noted that the method of the present application is not limited in implementation that the radio access network device must configure the beams around the service beam to the UE as spatially correlated beams, and fig. 22 is only an example.

As an example, in a case that the first indication information is used to indicate a spatial correlation beam set (i.e. a first spatial correlation beam set), the first beam is a current service beam, and the first spatial correlation beam set is a spatial correlation beam set corresponding to the first beam. When the service beam is switched to a beam other than the first beam, the radio access network device also sends indication information of a spatial correlation beam set corresponding to the switched service beam to the terminal device. Specifically, reference may be made to the second method in S1101.

It should be appreciated that in this example, the radio access network dynamically indicates the spatially dependent service beams to the terminal device. That is, the radio access network device indicates a spatial correlation beam set of the current service beam to the terminal device according to the current service beam, and sends the spatial correlation set of the switched service beam after switching the service beam.

As another example, in case the first indication information is indicative of a plurality of spatially related beam sets, the first indication information is further indicative of at least one second spatially related beam set comprising at least one beam spatially arranged in relation to a second beam, the second beam being different from the first beam. The radio access network device further sends second indication information to the terminal device, and accordingly, the terminal device receives the second indication information from the radio access network device, where the second indication information is used to indicate at least one second beam, and the at least one second beam corresponds to the at least one second spatially related beam set one to one. Specifically, reference may be made to the first mode in S1101. Correspondingly, when the service beam is switched to the second beam, the terminal device determines the second set of spatially related beams as the set of spatially related beams corresponding to the current service beam according to the first indication information and the second indication information.

It should be understood that the second beam here is a beam other than the first beam, or the second beam may be a candidate service beam determined by the radio access network according to the self-configuration information or information reported by the terminal device, for example, the second beam may be a beam indicated by the TCL state in the current activated TCI list.

S1002, the terminal device measures the first beam and at least one beam in the first set of spatially correlated beams.

It should be appreciated that in the prior art, the terminal device would measure the beam quality of a plurality of beams, including the serving beam, determine from which rules or criteria the measured beam is not currently specified in relation, and generally the number of measured beams is much larger than the number of beams included in the spatially related set of beams. In the embodiment of the present invention, when performing beam measurement, the terminal device determines which beams to measure according to the first indication information received from the radio access network device, so compared to the prior art, the terminal device performs some internal processing according to the first indication information before performing beam measurement, for example, only considering beams in the first spatially related beam set, and the like.

As an example, in case the first indication information is used to indicate one set of spatially dependent beams (i.e. a first set of spatially dependent beams), the terminal device determines which beams to measure in connection with the first set of spatially dependent beams. It should be noted that, in this embodiment, the terminal device is not limited to perform measurement only on the first beam and the beam in the first spatially correlated beam set, that is, one or more beams herein include the first beam, may also include some or all beams in the first spatially correlated beam set, may also include some or all beams in the current activated TCI list, and may also include beams that do not belong to either the first spatially correlated beam set or the activated TCI list.

As another example, in a case that the first indication information is used to indicate a plurality of spatially correlated beam sets, the terminal device determines, according to the current serving beam, the first indication information and the second indication information, a spatially correlated beam set corresponding to the current serving beam (assuming that the current beam is the second beam 01 among the second beams) (assuming that the spatially correlated set corresponding to the current serving beam is the second spatially correlated beam set 01).

It should be noted that, in this embodiment, the terminal device is not limited to perform measurement only on a current serving beam (i.e., the second beam 01) and a beam in the second spatially correlated beam set 01, that is, one or more beams herein include the second beam 01, and may also include some or all beams in the second spatially correlated beam set 01, and may also include some or all beams in the current activated TCI list, and may also include a beam that does not belong to either the second spatially correlated beam set 01 or the activated TCI list.

According to the embodiment of the application, under a mobile scene, the wireless access network equipment configures the space-related beam set for the terminal equipment, and the terminal equipment performs beam measurement according to the space-related beam set, so that the expense of measuring beams by the terminal equipment under a mobile condition can be reduced to a certain extent, and resources are saved.

Optionally, in S1002, the method 1000 may further define that the terminal device performs measurement on the first beam and one or more beams in the first spatially correlated beam set, that is, the "one or more beams" in S1002 are the first beam and one or more beams in the first spatially correlated beam set.

Optionally, the method 1000 comprises: s1003, the terminal device sends the measurement result of the first beam and the measurement result of one or more beams in the first spatial correlation beam set to the radio access network device.

Accordingly, the radio access network device receives measurements of the first beam, measurements of one or more beams of the first set of spatially dependent beams from the terminal device.

Illustratively, the measurement result of a beam referred to in this application includes a measurement result of a first parameter of the beam, and the measurement result may be expressed as an index of the beam and the measurement result of the first parameter of the beam. The first parameter may be reference signal received power RSRP or signal to interference plus noise ratio SINR, or may also be another parameter characterizing beam quality, which is not limited in this application. The measurements presented in the other examples in this application are as described above.

According to the embodiment of the application, the wireless access network equipment provides the space-related beam set of the current service beam for the terminal equipment, or the wireless access network equipment determines the space-related beam set of the current service beam according to a plurality of beams and a plurality of space-related beam sets provided by the terminal, so that the terminal can only track and measure the beams in the service beam and the space-related beam set according to the space-related beam set, the energy consumption and the expense of measurement and report of the terminal are further reduced, resources are saved, and more effective beam maintenance is promoted.

Optionally, the method 1000 further comprises:

the terminal device receives third indication information from the radio access network device, and correspondingly, the radio access network device sends the third indication information to the terminal device, where the third indication information is used to indicate a first resource, and the first resource is used to carry a measurement result of a current service beam and measurement results of N beams in the first spatial correlation set.

It should be understood that the number N of beams may be indicated by the third indication information, and then the third indication information is further used to instruct the terminal device to report the measurement result of the current serving beam and the measurement results of the N beams in the first spatial correlation set on the first resource, or, as defined by the protocol, the third indication information does not instruct to transmit the N beam measurement results.

It should be noted that, in some possible cases, in addition to reporting the measurement result of the serving beam on the first resource, the number of beams corresponding to the reported measurement result may also be less than N (for example, when the number of beams included in the first spatial correlation set is less than N). It should be further understood that, in the prior art, after the service beam is switched between the radio access network device and the terminal device, the radio access network device instructs the terminal device to measure and report the measurement results of the service beam and the candidate beam, the terminal device reports according to the instruction, and each beam reported by the terminal device is specified by the radio access network device. In other words, the terminal device cannot report itself after the measurement is finished, and cannot determine which beam measurement result to report. In addition, after the service beam is switched, if there is no further indication from the radio access network device, the terminal device still performs measurement and reporting according to the beam indicated last time by the radio access network device, and the beam indicated last time after the service beam is switched is likely to have poor beam quality, thereby wasting resources.

It should be further understood that, in the embodiment of the present application, a new reporting mechanism is provided, that is, a radio access network device configures, to a terminal device, a first resource, where the first resource is used for the terminal device to report measurement results of a current service beam and N spatially related beams, where, each time a service beam is switched, the terminal device may update the service beam reported on the first resource, and simultaneously update the N spatially related beams reported last time to spatially related beams of the switched service beam. In other words, on one hand, the terminal device may report the measurement results of the current serving beam and the N spatially correlated beams on the first resource without obtaining an indication of the radio access network device, and after each serving beam handover, the terminal device may update the reported measurement results of the N spatially correlated beams according to the spatially correlated beam set corresponding to the serving beam. On the other hand, the measurement results of which beams, the arrangement order of the measurement results of the beams on the first resource, and the like are determined by the terminal device, but not indicated by the radio access network device.

In S1003, for the terminal device sending the measurement result of the first parameter value of the first beam and the measurement result of the first parameter value of the beam in the first spatially related beam set to the radio access network device, the method 1000 may further define:

The number of beams in the first spatial correlation beam set is M, the terminal device sends, to the radio access network device on the first resource, a measurement result of a first parameter value of the first beam and a measurement result of a first parameter value of a beam in the first spatial correlation beam set according to a measurement result of the first parameter value of the first beam and the measurement result of the first parameter value of the beam in the first spatial correlation beam set, where a minimum value of the first parameter values of the N beams is greater than or equal to a maximum value of the first parameter values of the M beams except the N beams, M and N are positive integers, and M is greater than or equal to N.

Or the terminal device sends a measurement result of a first parameter value of a first beam and a measurement result of a first parameter value of a beam in a first spatial correlation beam set to the radio access network device on the first resource, where the number of beams in the first spatial correlation beam set is M, and M is smaller than N.

Or, the terminal device may also determine the sequence of the reported beam on the first resource by itself, which may specifically refer to the description corresponding to S1103.

According to the method and the device, under a mobile scene, the terminal automatically determines when to report and report which beams are based on the reporting resources configured by the wireless access network equipment, and does not need to report the beams according to the beam indication issued by the wireless access network equipment, so that the beam switching process is simplified, the time delay of reporting the beam measurement result is reduced, meanwhile, the terminal equipment can automatically update the measurement result of the measurement and report service beams and the measurement result of the space-related beams according to the current service beam switching condition, more effective beam maintenance is further promoted, and particularly when the beams are not matched under a complex propagation environment, the terminal can flexibly perform more effective beam maintenance.

Optionally, the method 1000 further comprises:

the terminal device determines a beam for beam failure recovery or beam failure detection from the measurement of the first parameter value of a beam in the first set of spatially correlated beams.

Illustratively, the terminal device selects the first X beams in the first spatial correlation beam set as candidate beams for beam failure recovery or beams for beam failure detection, and how to select these X beams may be referred to the correlation description in S1100.

It should be understood that, taking beam failure detection as an example, in general, after receiving a signaling indication sent by the radio access network device, the terminal device performs beam failure detection, where a beam set for performing beam failure detection is configured in the signaling. If the terminal device considers that the beam quality in the set does not meet the condition after measuring the set, the beam is considered to fail, the current link quality is poor, otherwise, the current link quality can be considered to be still. In the embodiment of the application, when the beam failure detection is performed, the radio access network device does not need to configure a beam set specially used for performing the beam failure detection, but the terminal device can use one or more beams in the first spatial correlation beam set as candidate beams for the beam failure detection, so that the signaling sending overhead of the radio access network device is saved. Meanwhile, the beams in the first spatial correlation beam set are already tracked and measured by the terminal device, and therefore, the beams are used as candidate beams for beam failure detection, and energy consumption and overhead of terminal measurement can be reduced.

According to the method and the device, the terminal device takes the tracked and detected space-related beam set as the candidate beam for beam failure recovery or the beam set for beam failure detection, signaling configuration is not required to be issued by the wireless access network device to configure the beam set for beam failure detection or beam failure recovery, and the terminal device detects the beam set, so that signaling issuing overhead of the wireless access network device is saved, energy consumption and overhead of beam measurement of the terminal are reduced, and effective beam maintenance is further promoted.

Optionally, the method 1000 further comprises:

the terminal device updates the first spatially correlated beam set according to the measurement result, and the specific implementation includes the following two ways:

in the first mode, the terminal device reports the measurement result of at least one third beam to the radio access network device, and correspondingly, the radio access network device receives the measurement result of the at least one third beam; then, the terminal device and the radio access network device add the at least one third beam to the first spatially correlated beam set configured by the radio access network device, and obtain the updated first spatially correlated beam set. Wherein the third beam is required to satisfy the following condition:

(1) The third beam is not the first beam, i.e. not the current serving beam.

(2) The third beam does not belong to the first set of spatially correlated beams configured by the radio access network device.

(3) The measurement of the third beam satisfies a first threshold.

Optionally, it may be further specified that the terminal device needs to report the measurement result of the at least one third beam M times to perform the subsequent step, or it may be further specified that the terminal device needs to report the measurement result of the at least one third beam M times continuously to perform the subsequent step.

See the description relating to method 1200.

In the second mode, the terminal device reports the measurement result of the at least one fourth beam to the radio access network device, and correspondingly, the radio access network device receives the measurement result of the at least one fourth beam; then, the terminal device and the radio access network device replace the at least one fourth beam with the first spatially correlated beam set configured by the radio access network device, and obtain an updated first spatially correlated beam set. Wherein the conditions that the fourth beam needs to satisfy are similar to the conditions that the third beam needs to satisfy.

Or the terminal equipment reports the measurement result of one beam set to the wireless access network equipment, and correspondingly, the wireless access network equipment receives the measurement result of the beam set; then, the terminal device and the radio access network device replace the beam set with the first spatially correlated beam set configured by the radio access network device to obtain an updated first spatially correlated beam set. Wherein the conditions that all beams in the beam set need to satisfy are similar to the conditions that the third beam needs to satisfy.

Reference may be made specifically to the description of method 1300.

According to the embodiment of the application, the terminal can update the space-related beam set according to the measurement result, beam maintenance is flexibly and effectively carried out autonomously, the defect that the wireless access network equipment directly configures the space-related beam set in the environment with changeable channel states is overcome, and the reliability and the expandability of the scheme are improved. Meanwhile, the network side updates the space correlation beam set according to the suggestion of the UE, so that the beams required to be measured can be reduced, and the energy consumption and the expense are reduced.

Optionally, the method 1000 further comprises:

the terminal device determines a beam for beam failure recovery or beam failure detection according to the measurement result of the first parameter value of the beam in the updated first spatial correlation beam set.

According to the method and the device, the terminal device takes the updated space-related beam set which is tracked and detected as the candidate beam for beam failure recovery or the beam set for beam failure detection, signaling configuration is not required to be issued by the wireless access network device for carrying out the beam failure detection or the beam set for beam failure recovery, and the terminal device detects the beam pair, so that signaling issuing cost of the wireless access network device is saved, energy consumption and cost of terminal measurement and reporting are reduced, effective beam maintenance is further promoted, and particularly when the beams are not matched in a complex propagation environment, the terminal can flexibly carry out more effective beam maintenance.

Optionally, the method 1000 further comprises:

the terminal device receives a transmission configuration indication state set from the radio access network device, wherein the transmission configuration indication state set comprises a plurality of transmission configuration indication states, and correspondingly, the terminal device receives the transmission configuration indication state set from the radio access network device.

Here, the transmission configuration indication state set may be understood as an activated TCI list mentioned in this application.

The set of transmission configuration indication states includes a plurality of transmission configuration indication states, wherein the plurality of transmission configuration indication states include the first transmission configuration indication state (in S1001, the first beam is a beam indicated by the first transmission configuration indication state and currently used for receiving a PDCCH and/or a PDSCH), or a source reference signal of the quasi-co-located QCL Type D of the first transmission configuration indication state is the same as a source reference signal of the quasi-co-located QCL Type D of one of the plurality of transmission configuration indication states, or the source reference signal of the quasi-co-located QCL Type D of the first transmission configuration indication state is QCL as the source reference signal of the quasi-co-located QCL Type D of one of the plurality of transmission configuration indication states.

It is to be understood that the terminal device receives the one or more sets of spatially dependent beams on the basis of receiving the set of transmission configuration indication states of the radio access network device. That is, this step may be performed before step S1001.

It should also be understood that, if this step is not performed, the radio access network device may replace the transmission configuration indication state set with the transmitted spatially correlated beam set in the present embodiment; if this step is performed, it can be understood in this embodiment of the present application that the radio access network device also sends the spatially correlated beam set on the basis of sending the transmission configuration indication state set to the terminal device.

Optionally, the method 1000 further comprises:

the radio access network device sends fifth indication information to the terminal device, and correspondingly, the terminal device receives fifth indication information from the radio access network device, where the fifth indication information is used to indicate a second transmission configuration indication state, and the second transmission configuration indication state is used to indicate a fifth beam, where the fifth beam belongs to the first spatially-related beam set and is not a beam indicated by the multiple transmission configuration indication states; the terminal device receives sixth indication information from the radio access network device, where the sixth indication information is used to indicate a third transmission configuration indication state, and the third transmission configuration indication state is used to indicate a sixth beam, where the sixth beam does not belong to the first spatially correlated beam set and is not a beam indicated by the multiple transmission configuration indication states, and where the fifth indication information indicates that the activation delay of the second transmission configuration indication state is smaller than the activation delay of the third transmission configuration indication state indicated by the sixth indication information.

It should be understood that for the sixth beam, the terminal device has not performed tracking measurement, and if the radio access network device indicates the sixth beam as the service beam to the terminal device, the terminal device needs to perform measurement and reporting on the beam. And the terminal device has already measured and reported the beam in the first space-dependent beam set, so when the radio access network device indicates the fifth beam as the service beam, it does not need to measure and report any more, and therefore the activation delay is less than the activation delay of the radio access network device indicating the sixth beam.

Reference may be made specifically to the description of method 1300.

According to the embodiment of the application, the terminal can update the space-related beam set according to the measurement result, beam maintenance is flexibly and effectively carried out autonomously, the defect that the wireless access network equipment directly configures the space-related beam set in the environment with changeable beam channel states is overcome, and the reliability and the expandability of the scheme are improved. Meanwhile, the network side updates the space-dependent beam set according to the suggestion of the terminal equipment, so that beams required to be measured can be reduced, and energy consumption and expenditure are reduced.

Optionally, the method 1000 further comprises:

and the wireless access network equipment determines a transmission configuration indication state set according to the updated first spatial correlation beam set, wherein the transmission configuration indication state set comprises a plurality of transmission configuration indication states.

Reference may be made specifically to the description relating to method 1200.

According to the embodiment of the application, the space-related beam set which can be maintained by the terminal can be used as the activated TCI list, so that the terminal can maintain the activated TCI list independently, time delay in the beam switching process is reduced, the situation of beam mismatching is reduced, and the robustness of a beam link is improved.

In order to further consider the beam distribution on the radio access network device side in practical deployment and the problem of beam mismatch in a complex propagation environment, the present application proposes a method 1100 for beam measurement. The beam mismatching here can be understood as that the real beam distribution situation at the terminal device side is not consistent with the beam distribution situation configured at the radio access network device side. For example, the radio access network device pre-configures the terminal device with the set of transmission configuration indication states as in methods 500 to 700, and configures the sequence of the corresponding transmission configuration indication states, but the terminal device does not move according to the trajectory envisioned by the radio access network device in the actual moving process, and the service beams sequentially switched by the terminal device are not switched according to the sequence in the corresponding transmission configuration indication state set.

The method 1100 for beam measurement according to the embodiment of the present application is described in detail below with reference to fig. 19. Fig. 19 is a schematic interaction diagram of a method 1100 of the present application.

S1101, the radio access network device transmits one or more spatially correlated sets of beams to the terminal device. In S1101, the following two implementations are included.

In a first mode, the radio access network device may configure a plurality of beams for the UE through higher layer signaling (e.g. RRC), and the plurality of beams respectively correspond to the spatially correlated beam sets.

It should be understood that when the current serving beam is a first beam, the UE regards a beam in the spatially dependent beam set corresponding to the first beam configured by the radio access network device as a spatially dependent beam.

In a second way, the radio access network device may only maintain the relevant beam set of the current serving beam, in other words, the radio access network device sends the spatial relevant beam set corresponding to the current serving beam to the UE. Alternatively, the radio access network device may dynamically maintain the set of associated beams, or the set may be updated through MAC-CE signaling.

Illustratively, the radio access network device issues a spatially correlated beam set corresponding to a current serving beam for the UE through MAC-CE signaling.

It should be understood that when the radio access network device indicates the spatially-correlated beam set in the above manner, the beam may be indicated in a variety of manners, for example, by using a TCI state ID or a reference signal ID (such as an SSB index or a CSI-RS resource ID), which is not limited in this application.

S1102, the terminal device tracks the measurement service beam and the related beam.

The terminal device tracks and measures one or more beams, including the serving beam.

The one or more beams may include some or all of the beams in the spatially correlated set of beams, may include one or more beams in the active TCI list, and may include one or more correlated beams that are neither in the spatially correlated set of beams nor in the active TCI list.

Optionally, the embodiments of the present application may further provide that the UE only needs to perform beam tracking on the serving beam and a beam in the spatially correlated beam set.

And S1103, the terminal equipment reports the measurement result to the wireless access network equipment.

It should be understood that the measurement result here is the ID and beam quality of the beam measured by the UE, or the TCI state ID and beam quality corresponding to the beam measured by the UE.

It should be noted that, in the present application, the description of the beam quality measured by the UE, or the measurement performed by the UE on the beam, may be understood as a result of at least one of the following parameters of the beam measured by the UE: RSRP, SINR, RI, CQI, PMI, LI.

It should be understood that, here, the radio access network device pre-configures a reporting configuration and the number of reference signal resources (beams) associated with the reporting configuration for the UE.

For example, the reporting configuration preconfigured by the radio access network device is used to report the serving beam and N other beams, which are specific to the N beams, and the radio access network device is not limited and may be determined by the UE. Wherein the N other beams are the first N beams with the best beam quality except for the serving beam among the one or more beams measured by the UE. Of course, if the number of beams other than the serving beam among the one or more beams measured by the UE is less than N, the UE only reports the ID and the beam quality of the measured beam.

Optionally, when the UE reports N other beams, the beams are ranked from high to low according to the beam quality, for example, ranked from high to low according to the RSRP value.

Alternatively, if the optional correspondence in S1102 is that the terminal device only performs measurement on the serving beam and the beam in the spatial correlation beam set, the N correlated other beams may all be spatial correlation beams in the spatial correlation beam set.

As an example, the radio access network device may also configure the UE to periodically/semi-continuously (semi-persistently) report the measurement result, and then the measurement result reported by the UE is automatically updated according to the switching of the service beam.

As another example, the radio access network device may also configure the UE with aperiodic triggered beam reporting. That is, the radio access network equipment sends DCI to the UE to trigger the UE to report the measurement result.

According to the embodiment of the application, the wireless access network equipment provides the space-related beam set of the current service beam for the UE, and the terminal can only track and measure the service beam and the beams in the space-related beam set according to the space-related beam set, so that the energy consumption and the expense of measurement and report of the terminal are reduced, resources are saved, and more effective beam maintenance is promoted; in a mobile scene, the terminal does not need to report the beam according to the beam indication issued by the wireless access network equipment based on the reporting configuration preconfigured by the wireless access network equipment, so that the beam switching process is simplified, the time delay of reporting the beam measurement result is reduced, and meanwhile, the terminal equipment can automatically update the measurement results of the measured and reported service beam and the space-related beam according to the current service beam switching condition, so that more effective beam maintenance is further promoted, and particularly when the beams are not matched under a complex propagation environment, the terminal can flexibly perform more effective beam maintenance.

Optionally, the method 1100 may also be used for an automatic update mechanism of candidate beams (reference signals) for beam failure recovery or beams (reference signals) for beam failure detection.

The terminal may take X beams from the spatial correlation beam set as candidate beams for beam failure recovery or a beam set for beam failure detection, where X is a positive integer.

It should be understood that the terminal device may determine candidate beams for beam failure recovery and a beam set for beam failure detection according to the configured spatially correlated beam set without receiving a signaling (such as RRC) indication of the radio access network device.

Two possible ways of selecting the X beams are described below, but the present application is not limited to the manner of selection.

In a first manner, after the UE switches the service beams, the first X beams may be taken as candidate beams for beam failure recovery or a beam set for beam failure detection according to the ranking from high to low of the beam quality in the spatial correlation beam set, or according to the ranking from high to low of the RSRP value or the SINR value of the reference signal corresponding to the beams in the spatial correlation beam set.

The RSRP or SINR may be replaced by other parameters that characterize the quality of the beam, which is not limited in this application.

In the second method, after the UE switches the service beams, the first X beams may be taken from front to back as candidate beams for beam failure recovery or a beam set for beam failure detection according to the order of arrangement of beams in the spatial correlation beam set.

According to the method and the device, the wireless access network equipment does not need to issue signaling to configure the beam set for carrying out beam failure detection or beam failure recovery, the terminal equipment detects the beam of the set pair, and the space-related beam set which is tracked and detected is used as the candidate beam for beam failure recovery or the beam set for beam failure detection, so that signaling issuing overhead of the wireless access network equipment is saved, energy consumption and overhead of beam measurement of the terminal are reduced, and effective beam maintenance is further promoted.

After the radio access network device configures a spatial correlation beam set for the terminal device, in order to further support the terminal device to autonomously maintain the spatial correlation beam set, the present application proposes a method 1200 and a method 1300 for beam measurement.

The method 1200 for beam measurement according to the embodiment of the present application is described in detail below with reference to fig. 20. Fig. 20 is a schematic interaction diagram of a method 1200 of the present application.

S1201, the radio access network device sends one or more sets of spatially correlated beams to the terminal device.

For specific implementation, refer to step S1101 in method 1100, which is not described herein again.

S1202, the UE reports the index of the at least one third beam and the beam quality of the at least one third beam to the radio access network device M times.

It should be understood that the third beam needs to satisfy the following condition: (1) The third beam here is neither the serving beam nor a spatially dependent beam of the set of spatially dependent beams. (2) The beam quality of the third beam satisfies a condition, such as RSRP being greater than a pre-configured threshold or a protocol specified threshold.

Optionally, when the UE reports the information M times, the reporting may be performed M consecutive times.

S1203, the UE and the radio access network device add at least one third beam to the spatially correlated set of beams.

The UE adds the beam reported in S1203 to the candidate beam list, and the radio access network device also considers that the UE updates the spatially correlated beam set accordingly.

Optionally, the method 1200 may also be used for an automatic update mechanism of candidate beams (reference signals) for beam failure recovery or beams (reference signals) for beam failure detection.

The specific implementation is similar to the corresponding part in the method 1100, and is not described herein again.

According to the embodiment of the application, the space-related beam set configured by the wireless access network equipment is used as the candidate beam for beam failure recovery or the beam set for beam failure detection, so that the signaling sending overhead of the wireless access network equipment is saved, the energy consumption and the overhead of terminal measurement and reporting are reduced, and the effective beam maintenance is further promoted.

Optionally, the method 1200 may include:

and the terminal and the wireless access network equipment update the activated TCI state set or the activated TCI list based on the updated space-dependent beam set.

As an example, if the number of beams in the spatially dependent set of beams is greater than or equal to 7, the first beam of the TCI list is activated as the serving beam, and the next 7 beams are the first 7 beams in the spatially dependent set of beams with good to bad beam quality. For example, the service beams and the spatial correlation beam sets 1 to 7 in table 1 are used as the updated activated TCI list, and RSRPs of the spatial correlation beam sets 1 to 7 are ranked from large to small as 1 to 7, respectively.

As another example, the radio access network device may subsequently instruct the terminal to switch the service beam or receive data using the current service beam by mapping a specific bit field (3 bits in length) in the DCI signaling. According to the order of table 1, each beam may automatically correspond to a code point (codepoint) of DCI as shown in table 1.

TABLE 1

According to the embodiment of the application, the space-dependent beam set which can be autonomously maintained by the terminal is used as the activated TCI list, so that the terminal can autonomously maintain the activated TCI list, time delay in the beam switching process is reduced, the situation of beam mismatching is reduced, and the robustness of a beam link is improved.

The method 1300 for beam measurement according to the embodiment of the present application is described in detail below with reference to fig. 21. Fig. 21 is a schematic interaction diagram of a method 1300 of the present application.

S1301, the radio access network device sends one or more spatially correlated beam sets to the terminal device.

S1302, the UE transmits at least one fourth beam to the radio access network device.

Based on a new reporting signaling, the terminal device autonomously reports one or more fourth beams to the network, where the fourth beam is a beam to be tracked. It can be understood that the terminal determines one or more fourth beams according to the measured condition of one or more beams on the basis of receiving the spatially correlated beam set. The one or more beams herein include the service beam, and may also include some or all of the beams in the spatially correlated set of beams, and may also include beams other than the service beam and the spatially correlated set of beams.

S1303, the radio access network device sends an acknowledgement message to the UE.

S1304, the UE and the radio access network device update the spatially dependent set of beams to at least one fourth beam.

Specifically, there are many possible implementations of the terminal in S1304.

As an example, after receiving the acknowledgement message of S1303, the terminal device further reports a measurement result of beam quality of at least one fourth beam, for example, a value of RSRP and/or SINR of at least one fourth beam quality. The UE and the radio access network device then update the set of spatially correlated beams to at least one fourth beam.

As another example, after the radio access network device receives the at least one fourth beam, the fourth beam reported by the UE is considered to be tracked and measured by the terminal, and then if any one of the at least one fourth beam is indicated as the serving beam by MAC-CE signaling, the UE subsequently reports the fourth beam to the terminal.

As another example, after receiving the acknowledgement message of S1303, the terminal device further reports a measurement result of the beam quality of at least one fourth beam, for example, a value of RSRP and/or SINR of at least one fourth beam quality. After the radio access network equipment receives the at least one fourth beam, the fourth beam reported by the UE is considered to be tracked and measured by the terminal, and then if any one of the at least one fourth beam is indicated as a serving beam by MAC-CE signaling subsequently.

It should be understood that the delay of the network side instructing the UE to switch a beam to a serving beam is not the same when the beam belongs to the following different categories.

(1) The beam belongs to the list of active TCIs.

(2) The beam belongs to the spatially dependent set of beams but not to the active TCI list.

(3) The beam does not belong to either the active TCI list or the spatially correlated set of beams.

For (1), the network side may use DCI to indicate, and the effective time is short, or the indicated time delay is short;

for (2), the network side cannot indicate the beams through the DCI, but at this time, the network side may consider that the terminal is maintaining the information of the beam, and if the beams are indicated by the MAC-CE, the effective time is very short;

for (3), the beams are not measured and reported by the UE, and if the network side deactivates the beam through a MAC-CE, the activation delay (activation delay) is relatively large, because the beams need to be measured and reported.

According to the embodiment of the application, the terminal can update the space-related beam set according to the measurement result, beam maintenance is flexibly and effectively carried out autonomously, the defect that the wireless access network equipment directly configures the space-related beam set in the environment with changeable beam channel states is overcome, and the reliability and the expandability of the scheme are improved. Meanwhile, the network side updates the space correlation beam set according to the suggestion of the UE, so that the beams required to be measured can be reduced, and the energy consumption and the expense are reduced.

Optionally, the method 1300 may include:

The specific implementation is similar to the content of the corresponding part in the method 1200, and is not described herein again.

In the above, with reference to fig. 5 to 15, fig. 18 to 21, the method provided by the embodiment of the present application is described in detail. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 16 to 17.

Fig. 16 is a schematic block diagram of a communication apparatus for beam switching according to an embodiment of the present application. As shown in fig. 16, the communication device 10 may include a transceiver module 11 and a processing module 12.

The transceiver module 11 may be configured to receive information sent by another apparatus, and may also be configured to send information to another apparatus. Such as receiving a first transmission configuration indication state set or sending a measurement result. The processing module 12 may be used to perform content processing of the device, such as making measurements of one or more reference signals.

In one possible design, the communication device 10 may correspond to a terminal equipment or UE in the above-described method embodiment.

Specifically, the communication apparatus 10 may correspond to a terminal device or a UE in any one of the methods 500 to 900 according to the embodiment of the present application, the communication apparatus 10 may include means for performing operations performed by the terminal device or the UE in the corresponding method, and each unit in the communication apparatus 10 is configured to implement the operations performed by the terminal device or the UE in the corresponding method.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 500, the transceiver module 11 is configured to execute steps S501 and S503, and the processing module 12 is configured to instruct steps S502 and S504.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 600, the transceiver module 11 is configured to execute steps S601 and S603, and the processing module 12 is configured to instruct steps S602 and S604.

Illustratively, when the communication device 10 corresponds to the UE in the method 700, the transceiver module 11 is configured to execute steps S701, S703, and S704b, and the processing module 12 is configured to instruct steps S702, S704a, S705a, and S705b.

Exemplarily, when the communication device 10 corresponds to the UE in the method 800, the transceiver module 11 is configured to perform step S801, and the processing module 12 is configured to instruct steps S802, S803a, and S803b.

Illustratively, when the communication device 10 corresponds to the UE in the method 900, the transceiver module 11 is configured to execute steps S903 and S904b, and the processing module 12 is configured to instruct steps S901, S902, S904a, S905a, and S905b.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 1000, the transceiver module 11 is configured to execute steps S1001 and S1003, and the processing module 12 is configured to instruct step S1002.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 1100, the transceiver module 11 is configured to execute steps S1101 and S1103, and the processing module 12 is configured to instruct step S1102.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 1200, the transceiver module 11 is configured to execute steps S1201 and S1202, and the processing module 12 is configured to instruct step S1203.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 1300, the transceiver module 11 is configured to execute steps S1301, S1302, and S1303, and the processing module 12 is configured to instruct step S1304.

Specifically, in one possible embodiment, the transceiver module 11 is configured to receive a first transmission configuration indication state set from the radio access network device, where the first transmission configuration indication state set includes a plurality of transmission configuration indication states, and the plurality of transmission configuration indication states exist in a first order; a processing module 12, configured to measure one or more reference signals, where the one or more reference signals include a reference signal corresponding to a first transmission configuration indication state; the transceiver module 11 is further configured to send a measurement result of a first parameter value of the one or more reference signals to the radio access network device; when the measurement result satisfies a first predetermined condition, the processing module 12 switches the currently applied transmission configuration indicating status to the first transmission configuration indicating status, where the first transmission configuration indicating status is a next transmission configuration indicating status of the currently applied transmission configuration indicating status based on the first order.

Wherein, in the case that the processing module 12 measures the plurality of reference signals, the first preset condition includes: the first transmission configuration indicates that a first parameter value of a reference signal corresponding to a state is maximum in the plurality of reference signals; alternatively, in the case that the processing module 12 measures the reference signal, the first preset condition includes: the first parameter value of the one reference signal is greater than a first preset value, and the one reference signal is a reference signal corresponding to the first transmission configuration indication state.

The first order is an arrangement order of the plurality of transmission configuration indication states in the first transmission configuration indication state set, or the first order is an order of descending or ascending indexes of the plurality of transmission configuration indication states.

Wherein the measurement result comprises: the first transmission configuration indicates an identity of a reference signal corresponding to the state.

Wherein, the transceiver module 11 is configured to receive one or more second transmission configuration indication state sets from the radio access network device, each of the second transmission configuration indication state sets includes a plurality of transmission configuration indication states, and each of the second transmission configuration indication states in the second transmission configuration indication state sets has a second order.

Optionally, when the first transmission configuration indication state is used as a currently applied transmission configuration indication state, the transceiver module 11 is configured to send a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state to the radio access network device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

Wherein the measurement result is sent to the radio access network device by the transceiver module 11 based on the indication of the radio access network device, or the measurement result is periodically sent to the radio access network device by the transceiver module 11 based on the configuration of the radio access network device.

Wherein the first parameter value comprises a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

In particular, in another possible embodiment, the processing module 12 is configured to obtain a first set of reference signal groups, the first set of reference signal groups comprising a plurality of reference signal groups, the plurality of reference signal groups being in an order; the processing module 12 is further configured to measure a plurality of reference signals, where the plurality of reference signals include a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group set; a transceiver module 11, configured to send a measurement result of a first parameter value of the multiple reference signals to the radio access network device; when the measurement result meets a second preset condition, the processing module 12 switches the currently applied transmission configuration indication state to the transmission configuration indication state corresponding to the second reference signal.

Wherein the second preset condition comprises: the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal.

In the first reference signal group set, two adjacent reference signal groups based on the order respectively include at least one same reference signal, or at least two reference signals respectively have quasi-parity.

The transceiver module 11 is further configured to send the measurement result N times consecutively to the radio access network device, where N is a positive integer.

The transceiver module 11 is further configured to receive first information from the radio access network device, where the first information is used to confirm that a transmission configuration indication state corresponding to the second reference signal is used as a transmission configuration indication state of a next application.

Wherein the measurement result is used to indicate that the first parameter value of the second reference signal is greater than the first parameter value of the first reference signal, or the measurement result includes the first parameter value of the second reference signal and the first parameter value of the first reference signal, or the measurement result includes an identifier of the second reference signal.

Wherein, when the transmission configuration indication status corresponding to the second reference signal is used as the currently applied transmission configuration indication status, the transceiver module 11 is further configured to send a measurement result of a first parameter value of a plurality of reference signals to the radio access network device, where the plurality of reference signals include the second reference signal and a third reference signal, the third reference signal corresponds to an available transmission configuration indication status, the second reference signal and the third reference signal belong to a second reference signal group in the first reference signal group set, and the second reference signal group is a next reference signal group in the first reference signal group based on the order.

The sequence is an order of the plurality of reference signal groups in the first reference signal group set, or the sequence is an order of the indexes of the plurality of reference signal groups from large to small or from small to large, or the order is determined based on the transmission configuration indication states corresponding to the plurality of reference signal groups.

In one possible design, the communication device 10 may correspond to a radio access network apparatus or a radio access network apparatus in the above-described method embodiment.

Specifically, the communication apparatus 10 may correspond to a radio access network device or a radio access network device in any one of the methods 500 to 900 according to the embodiments of the present application, the communication apparatus 10 may include a module for performing an operation performed by the radio access network device or the radio access network device in the corresponding method, and each unit in the communication apparatus 10 is to implement the operation performed by the radio access network device or the radio access network device in the corresponding method, respectively.

Illustratively, when the communication device 10 corresponds to the radio access network device in the method 500, the transceiver module 11 is configured to execute steps S501 and S503, and the processing module 12 is configured to execute step S504.

Illustratively, when the communication device 10 corresponds to the radio access network device in the method 600, the transceiver module 11 is configured to perform step S603, and the processing module 12 is configured to perform steps S601 and S604.

Illustratively, when the communication device 10 corresponds to the radio access network apparatus in the method 700, the transceiver module 11 is configured to execute steps S701, S703, and S704b, and the processing module 12 is configured to execute steps S704a, S705a, and S705b.

Illustratively, when the communication device 10 corresponds to the radio access network device in the method 800, the transceiver module 11 is configured to execute step S801, and the processing module 12 is configured to execute steps S802, S803a, and S803b.

Illustratively, when the communication device 10 corresponds to the radio access network device in the method 900, the transceiver module 11 is configured to execute steps S903 and S904b, and the processing module 12 is configured to execute steps S901, S904 and S905b.

Illustratively, when the communication device 10 corresponds to the radio access network equipment in the method 1000, the transceiver module 11 is configured to perform steps S1001 and S1003.

Illustratively, when the communication device 10 corresponds to the radio access network device in the method 1100, the transceiver module 11 is configured to perform steps S1101 and S1103.

Illustratively, when the communication device 10 corresponds to the radio access network device in the method 1200, the transceiver module 11 is configured to execute steps S1201 and S1202, and the processing module 12 is configured to execute step S1203.

Illustratively, when the communication apparatus 10 corresponds to the radio access network device in the method 1300, the transceiver module 11 is configured to execute steps S1301, S1302, and S1303, and the processing module 12 is configured to execute step S1304.

Specifically, in a possible embodiment, the transceiver module 11 is configured to send a first transmission configuration indication state set to the terminal device, where the first transmission configuration indication state set includes a plurality of transmission configuration indication states, and the plurality of transmission configuration indication states exist in a first order; the transceiver module 11 is further configured to receive a measurement result of a first parameter value of one or more reference signals from the terminal device, where the one or more reference signals include a reference signal corresponding to the first transmission configuration indication state; when the measurement result satisfies a first preset condition, the processing module 12 is configured to switch the currently applied transmission configuration indication state to the first transmission configuration indication state, where the first transmission configuration indication state is a transmission configuration indication state next to the currently applied transmission configuration indication state based on the first order.

Wherein, in a case that the transceiver module 11 receives the measurement result of the first parameter values of the plurality of reference signals from the terminal device, the first preset condition includes: the first transmission configuration indication state corresponds to a reference signal with a maximum first parameter value in the plurality of reference signals; alternatively, in the case that the transceiver module 11 receives the measurement result of the first parameter value of the one reference signal from the terminal device, the first preset condition includes: the first parameter value of the one reference signal is greater than a first preset value, and the one reference signal is a reference signal corresponding to the first transmission configuration indication state.

The first order is an arrangement order of the plurality of transmission configuration indication states in the first transmission configuration indication state set, or the first order is an order of the indexes of the plurality of transmission configuration indication states from large to small or from small to large.

Wherein, this measurement result includes: the first transmission configuration indicates an identity of a reference signal corresponding to the state.

The transceiver module 11 is further configured to send one or more second transmission configuration indication state sets to the terminal device, where each second transmission configuration indication state set includes a plurality of transmission configuration indication states, and each second transmission configuration indication state set indicates that a second order exists among the plurality of transmission configuration indication states.

When the first transmission configuration indication state is used as the currently applied transmission configuration indication state, the transceiver module 11 is configured to receive a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state from the terminal device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

Wherein the measurement result is sent by the terminal device to the radio access network device based on the indication of the radio access network device, or the measurement result is periodically sent by the terminal device to the radio access network device based on the configuration of the radio access network device.

In particular, in another possible embodiment, the processing module 11 is configured to obtain a first set of reference signal groups, the first set of reference signal groups including a plurality of reference signal groups, the plurality of reference signal groups being in an order; a transceiver module 12, configured to receive measurement results of first parameter values of multiple reference signals from the terminal device, where the multiple reference signals include a first reference signal and a second reference signal, the first reference signal is a reference signal corresponding to a currently applied transmission configuration indication state, the second reference signal is a reference signal corresponding to an available transmission configuration indication state, and the first reference signal and the second reference signal belong to a first reference signal group in the first reference signal group set; when the measurement result meets a second preset condition, the processing module 12 is further configured to switch the currently applied transmission configuration indication state to the transmission configuration indication state corresponding to the second reference signal.

The transceiver module 11 is configured to receive the measurement result from the terminal device N times continuously, where N is a positive integer.

The transceiver module 11 is configured to send first information to the terminal device, where the first information is used to confirm that the transmission configuration indication state corresponding to the second reference signal is used as the transmission configuration indication state of the next application.

Wherein, when the transmission configuration indication status corresponding to the second reference signal is used as the currently applied transmission configuration indication status, the transceiver module 11 is configured to receive the measurement result of the first parameter value of a plurality of reference signals from the terminal device, the plurality of reference signals include the second reference signal and a third reference signal, the third reference signal corresponds to the available transmission configuration indication status, the second reference signal and the third reference signal belong to a second reference signal group in the first reference signal group set, and the second reference signal group is a next reference signal group in the first reference signal group based on the order.

Fig. 17 is a schematic diagram of an apparatus 20 for information transmission according to an embodiment of the present application.

In a possible design, the apparatus 20 may be a radio access network device or a radio access network device, or may be a chip or a chip system located on the radio access network device or the radio access network device.

In one possible design, the apparatus 20 may be a terminal device or UE, including various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of terminals, mobile stations, terminals, user equipment, soft terminals, etc., and may also be a chip or a system of chips located on the terminal device.

The apparatus 20 may include a processor 21 (i.e., an example of a processing module) and a memory 22. The memory 22 is configured to store instructions, and the processor 21 is configured to execute the instructions stored in the memory 22 to enable the apparatus 20 to implement the steps performed by the devices in the various possible designs as described above in the corresponding methods in fig. 4 to 9.

Further, the apparatus 20 may further include an input port 23 (i.e., one example of a transceiver module) and an output port 24 (i.e., another example of a transceiver module). Further, the processor 21, memory 22, input 23 and output 24 may communicate with each other via internal connection paths to transfer control and/or data signals. The memory 22 is used for storing a computer program, and the processor 21 may be used for calling and running the computer program from the memory 22 to control the input port 23 to receive a signal and the output port 24 to send a signal, so as to complete the steps of the method described above, wherein the steps are performed by the terminal device, the radio access network device, the UE, or the radio access network device. The memory 22 may be integrated in the processor 21 or may be provided separately from the processor 21.

Alternatively, if the information transmission apparatus 20 is a communication device, the input port 23 is a receiver, and the output port 24 is a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver.

Alternatively, if the device 20 is a chip or a circuit, the input port 23 is an input interface, and the output port 24 is an output interface.

As an implementation manner, the functions of the input port 23 and the output port 34 may be realized by a transceiver circuit or a dedicated chip for transceiving. The processor 21 may be considered to be implemented by a dedicated processing chip, processing circuitry, a processor, or a general purpose chip.

As another implementation manner, a device provided by the embodiment of the present application may be implemented by using a general-purpose computer. Program codes that will implement the functions of the processor 21, the input port 23 and the output port 24 are stored in the memory 22, and a general-purpose processor implements the functions of the processor 21, the input port 23 and the output port 24 by executing the codes in the memory 22.

Each module or unit in the apparatus 20 may be configured to execute each action or processing procedure executed by a device (e.g., a terminal device) performing random access in the foregoing method, and a detailed description thereof is omitted here to avoid redundancy.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 20, please refer to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Embodiments of the present application also provide a computer-readable storage medium, on which computer instructions for implementing the method performed by the terminal device or the UE in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the terminal device or the UE in the above method embodiment.

Embodiments of the present application also provide a computer-readable storage medium, on which computer instructions for implementing the method performed by the radio access network device or the radio access network device in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the radio access network device or the radio access network device in the above method embodiments.

It will also be appreciated that the memory in the embodiments of the subject application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may 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 or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, data center, etc., that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" herein is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of beam switching, comprising:

the method comprises the steps that a terminal device receives a first transmission configuration indication state set from a wireless access network device, wherein the first transmission configuration indication state set comprises a plurality of transmission configuration indication states, and a first sequence exists among the plurality of transmission configuration indication states;

the terminal equipment measures one or more reference signals, wherein the one or more reference signals comprise a reference signal corresponding to a first transmission configuration indication state;

the terminal device sending a measurement result of a first parameter value of the one or more reference signals to the radio access network device;

and when the measurement result meets a first preset condition, the terminal device switches the transmission configuration indication state of the current application to the first transmission configuration indication state, wherein the first transmission configuration indication state is the next transmission configuration indication state of the transmission configuration indication states of the current application based on the first sequence.

2. The method of claim 1,

in a case where the terminal device measures the plurality of reference signals, the first preset condition includes: the first transmission configuration indicates that a first parameter value of a reference signal corresponding to a state is maximum in the plurality of reference signals;

or, in a case that the terminal device measures the reference signal, the first preset condition includes: the first parameter value of the reference signal is greater than a first preset value, and the reference signal is a reference signal corresponding to the first transmission configuration indication state.

3. The method according to claim 1 or 2,

4. The method according to any one of claims 1 to 3, wherein the measurement results comprise:

the first transmission configuration indicates an identity of a reference signal corresponding to a state.

5. The method of claim 1, further comprising:

The terminal device receives one or more second transmission configuration indication state sets from the radio access network device, wherein each second transmission configuration indication state set comprises a plurality of transmission configuration indication states, and a second sequence exists in the plurality of transmission configuration indication states in each second transmission configuration indication state set.

6. The method of claim 5, further comprising:

and when the first transmission configuration indication state is used as a currently applied transmission configuration indication state, the terminal device sends a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state to the radio access network device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

7. The method according to any one of claims 1 to 6,

the measurement result is sent by the terminal device to the radio access network device based on the indication of the radio access network device,

or the measurement result is periodically sent to the radio access network device by the terminal device based on the configuration of the radio access network device.

8. The method according to any one of claims 1 to 7,

the first parameter value comprises a reference signal received power, RSRP, or a signal to interference plus noise ratio, SINR.

9. A method of beam switching, comprising:

the method comprises the steps that a wireless access network device sends a first transmission configuration indication state set to a terminal device, wherein the first transmission configuration indication state set comprises a plurality of transmission configuration indication states, and a first sequence exists among the plurality of transmission configuration indication states;

the radio access network equipment receives a measurement result of a first parameter value of one or more reference signals from the terminal equipment, wherein the one or more reference signals comprise a reference signal corresponding to the first transmission configuration indication state;

and when the measurement result meets a first preset condition, the radio access network equipment switches the currently applied transmission configuration indication state into the first transmission configuration indication state, wherein the first transmission configuration indication state is a next transmission configuration indication state of the currently applied transmission configuration indication states based on the first sequence.

10. The method of claim 9,

In a case where the radio access network device receives a measurement result of a first parameter value of the plurality of reference signals from the terminal device, the first preset condition includes: the first transmission configuration indication state corresponds to a reference signal with a maximum first parameter value in the plurality of reference signals; alternatively, the first and second electrodes may be,

in a case where the radio access network device receives a measurement result of a first parameter value of the one reference signal from the terminal device, the first preset condition includes: and the first parameter value of the reference signal is greater than a first preset value, and the reference signal is a reference signal corresponding to the first transmission configuration indication state.

11. The method according to claim 9 or 10,

12. The method according to any one of claims 9 to 11, wherein the measurement results comprise:

13. The method of claim 9, further comprising:

the radio access network device sends one or more second transmission configuration indication state sets to the terminal device, wherein each second transmission configuration indication state set comprises a plurality of transmission configuration indication states, and each second transmission configuration indication state set comprises a second sequence of the plurality of transmission configuration indication states.

14. The method of claim 13, further comprising:

when the first transmission configuration indication state is used as a currently applied transmission configuration indication state, the radio access network device receives a measurement result of a first parameter value of a reference signal corresponding to a second transmission configuration indication state from the terminal device, where the second transmission configuration indication state is a next transmission configuration indication state of the first transmission configuration indication state based on the second order.

15. The method according to any one of claims 9 to 14, wherein:

16. The method according to any one of claims 9 to 15,

17. A method of beam measurement, comprising:

the method comprises the steps that a terminal device receives first indication information from a wireless access network device, wherein the first indication information is used for indicating a first spatial correlation beam set, the first spatial correlation beam set comprises at least one beam related to a first beam, the first beam is a service beam indicated by a first transmission configuration indication state and currently used for receiving a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH), and the first spatial correlation beam set is a spatial correlation beam set corresponding to the service beam;

the terminal device makes measurements on the first beam and the at least one beam of the first set of spatially dependent beams.

18. The method of claim 17, wherein the at least one beam is spatially correlated with the first beam,

The method further comprises the following steps:

the terminal device sends to the radio access network device a measurement of a first parameter value of the first beam, a measurement of the first parameter value of the at least one beam of the first set of spatially related beams.

19. The method of claim 17 or 18,

the first indication information is further for indicating at least one second set of spatially related beams comprising at least one beam spatially related to a second beam, the second beam being different from the first beam,

when the service beam is switched to the second beam, the terminal device determines the second spatially-related beam set as a spatially-related beam set corresponding to the service beam according to the first indication information.

20. The method of claim 19, further comprising:

the terminal device receiving second indication information from the radio access network device, the second indication information indicating at least one of the second beams, the at least one of the second beams corresponding to the at least one of the second spatially correlated beam sets in a one-to-one manner;

The determining, by the terminal device, the second spatially-related beam set as a spatially-related beam set corresponding to the serving beam according to the first indication information includes:

and the terminal equipment determines the second spatial correlation beam set as a spatial correlation beam set corresponding to the service beam according to the first indication information and the second indication information.

21. The method of claim 18, further comprising:

the terminal equipment receives third indication information from the wireless access network equipment, wherein the third indication information is used for indicating the first resource;

the terminal device sending a measurement of a first parameter value of the first beam, a measurement of the first parameter value of the at least one beam of the first set of spatially related beams to the radio access network device, comprising:

when the number of the at least one beam in the first spatially correlated beam set is greater than N, the terminal device sends, to the radio access network device, a measurement result of a first parameter value of the first beam and a measurement result of the first parameter value of the at least one beam in the first spatially correlated beam set on the first resource, where a minimum value of the first parameter values of the N beams is greater than or equal to a maximum value of the first parameter values of the N beams in the first spatially correlated beam set except for the N beams, where N is a positive integer.

22. The method according to any one of claims 17 to 21, further comprising:

the terminal device determines a beam for beam failure recovery or beam failure detection from the measurement result of the first parameter value of the at least one beam in the first set of spatially related beams.

23. The method according to claim 17 or 18, further comprising:

the terminal device sends an index of at least one third beam and a measurement result of a first parameter value to the radio access network device M times, wherein the third beam is not the first beam and does not belong to the first spatially correlated beam set, and the first parameter value of the at least one third beam is greater than a first threshold value;

and the terminal equipment adds the at least one third beam into the first space correlation beam set to obtain an updated first space correlation beam set.

24. The method of claim 17 or 18, further comprising:

the terminal device sends fourth indication information to the radio access network device, wherein the fourth indication information is used for indicating at least one fourth beam;

And the terminal equipment updates the first space-related beam set into the at least one fourth beam to obtain an updated first space-related beam set.

25. The method of claim 24, further comprising:

the terminal device sends the measurement result of the first parameter value of the at least one fourth beam to the radio access network device.

26. The method of any one of claims 23 to 25, further comprising:

and the terminal equipment determines the beam for beam failure recovery or beam failure detection according to the measurement result of the first parameter value of the beam in the updated first spatial correlation beam set.

27. The method of claim 17 or 18, further comprising:

the terminal device receiving a transmission configuration indication state set from the radio access network device, the transmission configuration indication state set comprising a plurality of transmission configuration indication states,

the plurality of transmission configuration indication states comprises the first transmission configuration indication state,

alternatively, the first and second electrodes may be,

the source reference signal of the quasi co-located QCL Type D of the first transmission configuration indication state is the same as the source reference signal of the quasi co-located QCL Type D of one transmission configuration indication state of the plurality of transmission configuration indication states,

Alternatively, the first and second electrodes may be,

the source reference signal of the quasi co-located QCL Type D of the first transmission configuration indication state and the source reference signal of the quasi co-located QCL Type D of one transmission configuration indication state of the plurality of transmission configuration indication states are QCL.

28. The method of claim 27, further comprising:

the terminal device receiving fifth indication information from the radio access network device, the fifth indication information being used for indicating a second transmission configuration indication state, the second transmission configuration indication state being used for indicating a fifth beam, the fifth beam belonging to the first spatial correlation beam set and not being a beam indicated by the plurality of transmission configuration indication states;

the terminal device receiving sixth indication information from the radio access network device, the sixth indication information indicating a third transmission configuration indication status, the third transmission configuration indication status indicating a sixth beam, the sixth beam not belonging to the first set of spatially dependent beams and not being a beam indicated by the plurality of transmission configuration indication statuses,

wherein the fifth indication information indicates that the activation delay of the second transmission configuration indication state is smaller than the activation delay of the sixth indication information indicating the third transmission configuration indication state.

29. The method of any one of claims 18 to 28,

the first parameter value comprises a beam received power, RSRP, or a signal to interference plus noise ratio, SINR.

30. A method of beam measurement, comprising:

generating first indication information by a wireless access network device, wherein the first indication information is used for indicating a first spatial correlation beam set, the first spatial correlation beam set comprises at least one beam related to a first beam, the first beam is a service beam indicated by a first transmission configuration indication state and currently used for receiving a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH), and the first spatial correlation beam set is a spatial correlation beam set corresponding to the service beam;

and the wireless access network equipment sends the first indication information to terminal equipment.

31. The method of claim 30, further comprising:

the at least one beam is spatially correlated with the first beam, and the radio access network device receives from the terminal device a measurement of a first parameter value for the first beam, the measurement of the first parameter value for the at least one beam of the first set of spatially correlated beams.

32. The method of claim 30 or 31,

the first indication information further comprises at least one second set of spatially related beams comprising at least one beam spatially related to a second beam, the second beam being different from the first beam.

33. The method of claim 32, further comprising:

the radio access network device sends second indication information to the terminal device, where the second indication information is used to indicate at least one second beam, and the at least one second beam corresponds to the at least one second spatially-related beam set one to one.

34. The method of claim 31, further comprising:

the wireless access network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating the first resource;

the radio access network device receiving a measurement of a first parameter value for the first beam from the terminal device, a measurement of the first parameter value for the at least one beam of the first set of spatially related beams, comprising:

When the number of the at least one beam of the first set of spatially related beams is greater than N, the radio access network device receives, on the first resource, a measurement of a first parameter value from a terminal device, a measurement of the first parameter value of the at least one beam of the first set of spatially related beams, wherein a minimum value of the first parameter value of the N beams is greater than or equal to a maximum value of the first parameter value of the first set of spatially related beams except for the N beams, N being a positive integer.

35. The method of claim 30 or 31, further comprising:

the radio access network device receives, M times, a measurement result of an index and a first parameter value of at least one third beam from the terminal device, where the third beam is not the first beam and does not belong to the first spatially correlated beam set, and the first parameter value of the at least one third beam is greater than a first threshold;

and the radio access network equipment adds the at least one third beam into the first spatial correlation beam set to obtain an updated first spatial correlation beam set.

36. The method of claim 30 or 31, further comprising:

the radio access network equipment receives fourth indication information from the terminal equipment, wherein the fourth indication information is used for indicating at least one fourth beam;

and the radio access network equipment updates the reference signal included in the first spatial correlation beam set into the at least one fourth beam according to the fourth indication information to obtain an updated first spatial correlation beam set.

37. The method of claim 36, further comprising:

the radio access network device receives a measurement of a first parameter value of the at least one fourth beam from the terminal device.

38. The method of any one of claims 35 to 37, further comprising:

39. The method of claim 30 or 31, further comprising:

The radio access network device sending a transmission configuration indication state set to the terminal device, the transmission configuration indication state set comprising a plurality of transmission configuration indication states, wherein,

alternatively, the first and second electrodes may be,

40. The method of claim 39, further comprising:

the radio access network device sends fifth indication information to the terminal device, where the fifth indication information is used to indicate a second transmission configuration indication state, and the second transmission configuration indication state is used to indicate a fifth beam, where the fifth beam belongs to the first spatial correlation beam set and is not a beam indicated by the multiple transmission configuration indication states;

The radio access network device sending sixth indication information to the terminal device, the sixth indication information indicating a third transmission configuration indication state, the third transmission configuration indication state indicating a sixth beam, the sixth beam not belonging to the first spatially dependent beam set and not being a beam indicated by the plurality of transmission configuration indication states,

41. The method of any one of claims 31 to 40,

42. An apparatus for multiple access session management, comprising:

means for implementing the method of any one of claims 1 to 8; alternatively, the first and second electrodes may be,

means for implementing the method of any one of claims 9 to 16; alternatively, the first and second electrodes may be,

means for implementing the method of any one of claims 17 to 29; alternatively, the first and second electrodes may be,

means for implementing the method of any one of claims 30 to 41.

43. A communications apparatus, comprising:

a processor and a memory;

the memory for storing a computer program;

the processor configured to execute a computer program stored in the memory to cause the communication apparatus to perform the communication method of any one of claims 1 to 8, or to perform the communication method of any one of claims 9 to 16, or to perform the communication method of any one of claims 17 to 29, or to perform the communication method of any one of claims 30 to 41.

44. A computer readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any of claims 1 to 8, or the method of any of claims 9 to 16, or the method of any of claims 17 to 29, or the method of any of claims 30 to 41.

45. A chip, comprising:

a memory for storing a computer program;

a processor for reading and executing the computer program stored in the memory, the processor performing the method of any of claims 1 to 8, or performing the method of any of claims 9 to 16, or performing the method of any of claims 17 to 29, or performing the method of any of claims 30 to 41, when the computer program is executed.

46. A computer program product, characterized in that it comprises computer program code which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 8, or the method of any one of claims 9 to 16, or the method of any one of claims 17 to 29, or the method of any one of claims 30 to 41.