WO2023050208A1 - 波束切换、评估上报方法和装置、通信装置及存储介质 - Google Patents

波束切换、评估上报方法和装置、通信装置及存储介质 Download PDF

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Publication number
WO2023050208A1
WO2023050208A1 PCT/CN2021/121918 CN2021121918W WO2023050208A1 WO 2023050208 A1 WO2023050208 A1 WO 2023050208A1 CN 2021121918 W CN2021121918 W CN 2021121918W WO 2023050208 A1 WO2023050208 A1 WO 2023050208A1
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Prior art keywords
terminal
channel
channel corresponding
base station
dci
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PCT/CN2021/121918
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English (en)
French (fr)
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罗星熠
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2021/121918 priority Critical patent/WO2023050208A1/zh
Priority to CN202180003189.8A priority patent/CN116195290A/zh
Publication of WO2023050208A1 publication Critical patent/WO2023050208A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a beam switching method, an evaluation and reporting method, a beam switching device, an evaluation and reporting device, a communication device, and a computer-readable storage medium.
  • the base station When the base station communicates with the terminal through the beam, when the base station determines that the channel C1 corresponding to the beam beam1 is idle (that is, not occupied) through LBT (Listen Before Talk), it can occupy the channel C1, and communicate with the terminal through the beam beam1 communication.
  • LBT Listen Before Talk
  • the base station may need to perform beam switching (beam switching), for example, it needs to switch to beam beam2 to communicate with the terminal, and the conditions of the channels corresponding to different beams may be different, for example, in channel C1 and channel C2
  • beam switching beam switching
  • the base station only determines that channel C1 corresponding to beam1 is idle, but cannot determine whether channel C2 corresponding to beam beam2 is idle. If the terminal is rashly instructed to switch to beam beam2 for communication, it may be due to channel C2 is busy causing problems.
  • embodiments of the present disclosure propose a beam switching method, an evaluation and reporting method, a beam switching device, an evaluation and reporting device, a communication device, and a computer-readable storage medium to solve technical problems in related technologies.
  • a beam switching method is proposed, performed by the base station, the method includes: when communicating with the terminal through the first beam, when switching to the second beam is required, sending to the The terminal sends the first indication information, which is used to instruct the terminal to evaluate the channel corresponding to the second beam; receive the evaluation result of the channel corresponding to the second beam reported by the terminal; determine according to the evaluation result Whether to switch to the second beam to communicate with the terminal through the second beam.
  • an evaluation and reporting method executed by a terminal, the method includes: receiving first indication information sent by the base station in the case of communicating with the base station through the first beam, the The first instruction information is used to instruct the terminal to evaluate the channel corresponding to the second beam; to evaluate the channel corresponding to the second beam; to report the evaluation result obtained by evaluating the channel corresponding to the second beam to the base station.
  • an evaluation and reporting device including one or more processors, the processors are configured to execute: in the case of communicating with the base station through the first beam, receiving the The first instruction information sent, the first instruction information is used to instruct the terminal to evaluate the channel corresponding to the second beam; evaluate the channel corresponding to the second beam; and evaluate the channel corresponding to the second beam The evaluation result obtained by the channel evaluation is reported to the base station.
  • a communication device including: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the above beam switching method.
  • a communication device including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the above evaluation and reporting method.
  • a computer-readable storage medium for storing a computer program, and when the program is executed by a processor, the steps in the above beam switching method are implemented.
  • a computer-readable storage medium for storing a computer program, and when the program is executed by a processor, the steps in the above evaluation and reporting method are implemented.
  • the base station when it communicates with the first beam passed by the terminal, when it needs to switch to the second beam, it can send indication information to the terminal, instructing the terminal to evaluate the channel corresponding to the second beam, and report The evaluation result can further determine whether to switch to the second beam to communicate with the terminal according to the evaluation result, which is beneficial to avoid communication problems caused by switching to the second beam when the channel corresponding to the second beam is occupied.
  • Fig. 2 is a schematic flowchart of another beam switching method according to an embodiment of the present disclosure.
  • Fig. 3 is a schematic flow chart showing another beam switching method according to an embodiment of the present disclosure.
  • Fig. 5 is a schematic flow chart showing another beam switching method according to an embodiment of the present disclosure.
  • Fig. 6 is a schematic diagram showing a sequence of indication information and evaluation results according to an embodiment of the present disclosure.
  • Fig. 7 is a schematic flowchart of a method for evaluating and reporting according to an embodiment of the present disclosure.
  • Fig. 9 is a schematic flow chart showing yet another evaluation and reporting method according to an embodiment of the present disclosure.
  • Fig. 10 is a schematic block diagram of an apparatus for beam switching according to an embodiment of the present disclosure.
  • Fig. 11 is a schematic block diagram of an apparatus for evaluating and reporting according to an embodiment of the present disclosure.
  • first, second, third, etc. may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another.
  • a first beam may also be called a second beam, and similarly, a second beam may also be called a first beam.
  • the word "if” as used herein may be interpreted as “at” or “when” or “in response to a determination.”
  • the terms used herein are “greater than” or “less than”, “higher than” or “lower than” when representing a size relationship. But for those skilled in the art, it can be understood that the term “greater than” also covers the meaning of “greater than or equal to”, and “less than” also covers the meaning of “less than or equal to”; the term “higher than” covers the meaning of “higher than or equal to”. “The meaning of "below” also covers the meaning of "less than or equal to”.
  • Fig. 1 is a schematic flowchart of a beam switching method according to an embodiment of the present disclosure.
  • the beam switching method shown in this embodiment can be performed by a base station, and the base station can communicate with terminals, and the terminals include but are not limited to communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices. Including but not limited to base stations in communication systems such as 4G, 5G, and 6G.
  • the base station can communicate with the terminal through a beam, wherein the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the beam switching method may include the following steps:
  • step S101 in the case of communicating with the terminal through the first beam, when it is necessary to switch to the second beam, send indication information to the terminal, which is used to instruct the terminal to perform the channel corresponding to the second beam Evaluate;
  • step S102 receiving the evaluation result of the channel corresponding to the second beam reported by the terminal;
  • step S103 it is determined whether to switch to the second beam according to the evaluation result, so as to communicate with the terminal through the second beam.
  • the base station when the base station communicates with the terminal through the first beam, it may need to perform beam switching, for example, switching to the second beam for communication, wherein the first beam corresponds to channel C1, the second beam corresponds to channel C2, and channel C1 and channel C2 may belong to an unlicensed frequency band.
  • the base station Since the base station will use the beam for communication when it determines that the channel corresponding to the beam is idle, when the base station is using the first beam to communicate with the terminal, it has already determined that the channel corresponding to the first beam is not occupied. Therefore, you can Send indication information to the terminal through the first beam, instructing the terminal to evaluate the channel corresponding to the second beam.
  • the terminal may evaluate the channel corresponding to the second beam after receiving the indication information from the base station.
  • the method of evaluating the channel corresponding to the second beam will be described in subsequent embodiments.
  • the terminal may report the evaluation result to the base station, for example, report the evaluation result to the base station through the first beam.
  • the second beam may be one beam, or may be multiple beams.
  • the base station may instruct the terminal to evaluate the channel corresponding to one beam, and may also instruct the terminal to evaluate the channels corresponding to multiple beams.
  • the terminal when instructing the terminal to evaluate a channel corresponding to a second beam, the terminal may report the evaluation result of the channel corresponding to the second beam, and the base station may instruct the terminal to switch to the second beam when the channel is determined to be idle according to the evaluation result.
  • the terminal may report the evaluation results of the channels corresponding to the multiple second beams, and may also mark the beam corresponding to each evaluation result.
  • the evaluation result determines that at least one channel is idle
  • the terminal may be instructed to switch to the second beam corresponding to the idle channel, for example, the base station selects a second beam corresponding to a channel among multiple idle channels according to the actual situation to indicate to the terminal; If it is determined according to the evaluation result that all channels corresponding to the second beam are occupied, it is not necessary to instruct the terminal to switch to the second beam, but to continue to use the first beam to communicate with the terminal.
  • the first indication information is further used to indicate that the beam corresponding to the channel to be evaluated is the second beam
  • the method further includes: sending second indication information to the terminal for Indicates that the beam corresponding to the channel to be evaluated is the second beam.
  • the base station can trigger the terminal to perform an evaluation operation through the first indication information, but the specific channels of the second beams to be evaluated also need to be instructed by the base station, for example, the base station can trigger the terminal to perform the evaluation through the first indication information operation, instructing the terminal that the beam corresponding to the channel to be evaluated is the second beam; or the base station may trigger the terminal to perform the evaluation operation through the first indication signal, and indicate that the beam corresponding to the channel to be evaluated by the terminal is the second beam through the second indication information. beam.
  • the first indication information includes downlink control information DCI (Downlink Control Information);
  • the second indication information includes at least one of the following: radio resource control RRC (Radio Resource Control) signaling, medium access control MAC (Media Access Control) signaling.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • one or more bits in the DCI can be set to indicate the sensing beam (sensing beam) that needs to be evaluated by the terminal, and the indicated sensing beam is A second beam needs to be evaluated.
  • the number of bits used for indication may be related to the number of candidate beams (which may be pre-agreed), for example, there are 4 candidate beams, and the base station selects one or more beams as the sensing beams, then 2 bits can be used to perform Indication, instructing the terminal to evaluate the channel corresponding to the sensing beam; for example, there are 2 candidate beams, and the base station selects one or more beams as the second beam, then it can be indicated by 1 bit, indicating that the terminal corresponds to the second beam channels are evaluated.
  • the second indication information is RRC signaling
  • the QCL Quasi Co-Location, quasi-co-location parameter in this field
  • the MAC CE information element
  • the number of occupied bits required by the indication information in these two cases is similar to that of the foregoing embodiment, so details are not repeated here.
  • the first indication information and the second indication information may also jointly indicate that the beam corresponding to the channel to be evaluated is the second beam, for example, joint RRC signaling and DCI indicate that the beam corresponding to the channel to be evaluated by the terminal is the second beam , or jointly MAC signaling and DCI indicate that the terminal needs to evaluate the beam corresponding to the channel as the second beam.
  • RRC signaling or MAC signaling firstly indicates the terminal candidate beams or candidate beam combinations, and then indicates through DCI that the candidate beams or the beams or beam combinations in the candidate beam combinations are the second beams corresponding to the channels that the terminal needs to evaluate.
  • the channel occupation time (Channel Occupied Time, COT) corresponding to the first beam by the base station may be COT1.
  • the channel corresponding to the first beam may continue to be occupied until the end of COT1.
  • the base station may re-determine the channel occupancy time of the channel C2 corresponding to the second beam, such as COT2, and further determine the channel C2 corresponding to the second beam Occupy until the end of COT2; you can also continue to occupy according to COT1, that is, the sum of the occupied time of the channel C1 corresponding to the first beam before the beam switching and the occupied time of the channel C2 corresponding to the second beam after the beam switching for COT1.
  • the base station when the base station communicates with the terminal through the first beam and needs to switch to the second beam, it can send indication information to the terminal, instructing the terminal to evaluate the channel corresponding to the second beam, and report the evaluation
  • whether to switch to the second beam to communicate with the terminal can be determined according to the evaluation result, which is beneficial to avoid communication problems caused by switching to the second beam when the channel corresponding to the second beam is occupied.
  • the manner of evaluating the channel corresponding to the second beam includes at least one of the following:
  • CCA Clear Channel Assessment
  • eCCA enhanced clear channel assessment
  • the terminal evaluates the occupancy of the channel corresponding to the second beam to be switched to, either by measuring the L1-RSSI of the channel corresponding to the second beam, or by measuring the second
  • the channel corresponding to the beam performs CCA or eCCA.
  • Fig. 2 is a schematic flowchart of another beam switching method according to an embodiment of the present disclosure.
  • the manner of evaluating the channel corresponding to the second beam includes measuring the L1-RSSI of the channel corresponding to the second beam, and the method further includes:
  • a preset aperiodic trigger state (aperiodic trigger state) dedicated to L1-RSSI measurement is sent to the terminal, wherein the preset aperiodic trigger state is associated with at least one zero-power channel state information reference signal ZP-CSI-RS(Zero Power-Channel State Information-Reference Signal);
  • the sending the first indication information to the terminal includes:
  • step S202 downlink control information DCI is sent to the terminal, and the DCI carries the preset aperiodic trigger state, which is used to trigger the terminal to measure the The channel corresponding to the second beam obtains the L1-RSSI.
  • the base station may send a preset aperiodic trigger state to the terminal in advance, the preset aperiodic trigger state is dedicated to L1-RSSI, for example, the preset aperiodic trigger state may be sent to the terminal through RRC signaling , and the preset aperiodic trigger state is associated with at least one ZP-CSI-RS.
  • DCI may be sent to the terminal, and the DCI may carry a preset aperiodic trigger state.
  • the terminal After the terminal receives the DCI, it can detect the CSI request field in the DCI, which carries the aperiodic trigger status. If the aperiodic trigger status in the CSI request field is the preset aperiodic trigger status, it can trigger the terminal to trigger in the preset aperiodic trigger state.
  • the L1-RSSI of the channel corresponding to the second beam is measured on the resources corresponding to the state-associated ZP-CSI-RS.
  • the DCI includes uplink scheduling DCI
  • the uplink scheduling DCI is further used to instruct the terminal to report the evaluation result through a physical uplink shared channel PUSCH (Physical Uplink Shared Channel) scheduled by the uplink scheduling DCI.
  • PUSCH Physical Uplink Shared Channel
  • the type of DCI may be DCI format 0_1 or DCI format 0_2. These two types of DCI are uplink scheduling DCI. After the terminal evaluates and obtains the L1-RSSI, it can use the uplink resources scheduled by the DCI. RSSI is reported to the base station. Accordingly, the DCI can not only realize the function of indication, but also play the role of scheduling, which is beneficial to improve communication efficiency.
  • Fig. 3 is a schematic flow chart showing another beam switching method according to an embodiment of the present disclosure. As shown in FIG. 3, the determining whether to switch to the second beam according to the evaluation result to communicate with the terminal through the second beam includes:
  • step S301 when the L1-RSSI is greater than a first threshold, determine that the channel corresponding to the second beam is occupied, and continue to use the first beam to communicate with the terminal;
  • step S302 when the L1-RSSI is smaller than the second threshold, it is determined that the channel corresponding to the second beam is idle, and the channel is switched to the second beam, so as to communicate with the terminal through the second beam communication.
  • the base station may determine whether the channel corresponding to the second beam is idle based on the L1-RSSI.
  • the L1-RSSI When the L1-RSSI is large, for example greater than the first threshold, it can be determined that the channel corresponding to the second beam is occupied, then switching to the second beam may cause communication problems, so that the first beam can continue to be used to communicate with the terminal communication.
  • the L1-RSSI When the L1-RSSI is small, for example, less than the second threshold, it can be determined that the channel corresponding to the second beam is idle, then it can be switched to the second beam to communicate with the terminal through the second beam, so that Instruct the terminal to switch beams and switch to the second beam for communication.
  • the first threshold and the second threshold can be set as required, and the second threshold is less than or equal to the first threshold.
  • Fig. 4 is a schematic flow chart showing another beam switching method according to an embodiment of the present disclosure.
  • the manner of evaluating the channel corresponding to the second beam includes performing CCA or eCCA on the channel corresponding to the second beam, wherein the sending the indication information to the terminal includes:
  • step S401 DCI is sent to the terminal, and the DCI carries a dedicated identifier for instructing the terminal to perform CCA or eCCA on the channel corresponding to the second beam.
  • the base station sends DCI carrying a dedicated identifier to the terminal to instruct the terminal to perform CCA or eCCA on the channel corresponding to the second beam.
  • the base station can send multiple DCIs to the terminal during communication with the terminal, different DCIs can have different functions.
  • the base station can send DCIs to the terminal for regular scheduling, or indicate the COT of the channel corresponding to the first beam. Therefore, in order to instruct the terminal to perform CCA or eCCA on the channel corresponding to the second beam through the DCI, a dedicated identifier can be added to the DCI. After receiving the DCI, the terminal can determine the presence of the dedicated identifier in the DCI.
  • the DCI is at least used to instruct the terminal to perform CCA or eCCA on the channel corresponding to the second beam.
  • the DCI includes uplink scheduling DCI and/or downlink scheduling DCI;
  • the uplink scheduling DCI is further used to instruct the terminal to report the evaluation result through the PUSCH scheduled by the uplink scheduling DCI;
  • the downlink scheduling DCI is also used to indicate the physical uplink control channel corresponding to the hybrid automatic repeat request HARQ (Hybrid Automatic Repeat reQuest) corresponding to the physical downlink shared PDSCH (Physical Downlink Shared CHannel) scheduled by the terminal through the downlink scheduling DCI PUCCH (Physical Uplink Control Channel) reports the evaluation result.
  • HARQ Hybrid Automatic Repeat reQuest
  • PUCCH Physical Uplink Control Channel
  • the DCI may be downlink scheduling DCI or uplink scheduling DCI.
  • the terminal can determine the PDSCH scheduled by the DCI, and then determine the PUCCH used to transmit the HARQ corresponding to the PDSCH, so that On the PUCCH, the result of the CCA or eCCA is reported to the base station.
  • step S501 when the result of CCA or eCCA is that the channel corresponding to the second beam is occupied, continue to use the first beam to communicate with the terminal;
  • step S502 if the result of CCA or eCCA is that the channel corresponding to the second beam is idle, switch to the second beam to communicate with the terminal through the second beam.
  • the base station may determine whether the channel corresponding to the second beam is idle based on the CCA or eCCA result.
  • the result of CCA or eCCA can be reported in the form of auxiliary information, for example, occupying 1 bit, when the bit is 0, it indicates that the channel corresponding to the second beam is occupied, and when the bit is 1, it indicates that the channel corresponding to the second beam is idle.
  • auxiliary information for example, occupying 1 bit, when the bit is 0, it indicates that the channel corresponding to the second beam is occupied, and when the bit is 1, it indicates that the channel corresponding to the second beam is idle.
  • switching to the second beam may cause communication problems, so that the first beam can continue to be used to communicate with the terminal; in the case of determining that the channel of the second authorized frequency band is idle
  • the terminal may be switched to the second beam to communicate with the terminal through the second beam, so that the terminal may be instructed to perform beam switching to switch to the second beam for communication.
  • Fig. 6 is a schematic diagram showing a sequence of indication information and evaluation results according to an embodiment of the present disclosure.
  • first indication information may be sent to the terminal to trigger the terminal to evaluate channel C2 corresponding to the second beam beam2.
  • the terminal may evaluate the channel corresponding to the second beam, and report the evaluation result to the base station, for example, at time t2 shown in FIG. 6 .
  • the channel C1 corresponding to the first beam may be continuously occupied until the end of COT1.
  • the base station may re-determine the channel occupancy time of the channel C2 corresponding to the second beam, such as COT2, and further determine the channel C2 corresponding to the second beam Occupy until the end of COT2; you can also continue to occupy according to COT1, that is, the sum of the occupied time of the channel C1 corresponding to the first beam before the beam switching and the occupied time of the channel C2 corresponding to the second beam after the beam switching for COT1.
  • the base station can communicate with the terminal through a beam, wherein the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the beam switching method may include the following steps:
  • step S701 in the case of communicating with the base station through the first beam, receiving first indication information sent by the base station, the first indication information is used to instruct the terminal to evaluate the channel corresponding to the second beam,
  • the second beam is a beam that the base station expects to switch to;
  • step S702 evaluate the channel corresponding to the second beam
  • step S703 report the evaluation result obtained from the channel evaluation corresponding to the second beam to the base station.
  • the base station Since the base station will use the beam for communication when it determines that the channel corresponding to the beam is idle, when the base station is using the first beam to communicate with the terminal, it has already determined that the channel corresponding to the first beam is not occupied. Therefore, you can Send indication information to the terminal through the first beam, instructing the terminal to evaluate the channel corresponding to the second beam.
  • the terminal may evaluate the channel corresponding to the second beam after receiving the indication information from the base station.
  • the method of evaluating the channel corresponding to the second beam will be described in subsequent embodiments.
  • the terminal may report the evaluation result to the base station, for example, report the evaluation result to the base station through the first beam.
  • the second beam may be one beam, or may be multiple beams.
  • the base station can instruct the terminal to evaluate the channel corresponding to one beam, or instruct the terminal to evaluate the channels corresponding to multiple beams.
  • the terminal when instructing the terminal to evaluate a channel corresponding to a second beam, the terminal may report the evaluation result of the channel corresponding to the second beam, and the base station may instruct the terminal to switch to the second beam when the channel is determined to be idle according to the evaluation result.
  • the terminal may report the evaluation results of the channels corresponding to the multiple second beams, and may also mark the beam corresponding to each evaluation result.
  • the evaluation result determines that at least one channel is idle
  • the terminal may be instructed to switch to the second beam corresponding to the idle channel, for example, the base station selects a second beam corresponding to a channel among multiple idle channels according to the actual situation to indicate to the terminal; If it is determined according to the evaluation result that all channels corresponding to the second beam are occupied, it is not necessary to instruct the terminal to switch to the second beam, but to continue to use the first beam to communicate with the terminal.
  • the reporting to the base station an evaluation result obtained by evaluating a channel corresponding to the second beam includes: reporting the evaluation result to the base station through the first beam.
  • the first indication information is further used to indicate that the beam corresponding to the channel to be evaluated is the second beam
  • the method further includes: sending second indication information to the terminal for Indicates that the beam corresponding to the channel to be evaluated is the second beam.
  • the base station can trigger the terminal to perform an evaluation operation through the first indication information, but the specific channels of the second beams to be evaluated also need to be instructed by the base station, for example, the base station can trigger the terminal to perform the evaluation through the first indication information operation, instructing the terminal that the beam corresponding to the channel to be evaluated is the second beam; or the base station may trigger the terminal to perform the evaluation operation through the first indication signal, and indicate that the beam corresponding to the channel to be evaluated by the terminal is the second beam through the second indication information. beam.
  • the first indication information includes downlink control information DCI;
  • the second indication information includes at least one of the following: radio resource control RRC signaling and medium access control MAC signaling.
  • one or more bits in the DCI can be set to indicate the sensing beam (sensing beam) that needs to be evaluated by the terminal, and the indicated sensing beam is A second beam needs to be evaluated.
  • the number of bits used for indication may be related to the number of candidate beams (which may be pre-agreed), for example, there are 4 candidate beams, and the base station selects one or more beams as the sensing beams, then 2 bits can be used to perform Indication, instructing the terminal to evaluate the channel corresponding to the sensing beam; for example, there are two candidate beams, and the base station selects one or more beams as the second beam, then it can be indicated by 1 bit, indicating that the terminal corresponds to the second beam channels are evaluated.
  • the second indication information is RRC signaling
  • the second indication information is MAC signaling
  • the beam corresponding to the channel that needs to be measured by the terminal may be indicated through the MAC CE.
  • the number of occupied bits required by the indication information in these two cases is similar to that of the foregoing embodiment, so details are not repeated here.
  • the first indication information and the second indication information may also jointly indicate that the beam corresponding to the channel to be evaluated is the second beam, for example, joint RRC signaling and DCI indicate that the beam corresponding to the channel to be evaluated by the terminal is the second beam , or jointly MAC signaling and DCI indicate that the terminal needs to evaluate the beam corresponding to the channel as the second beam.
  • RRC signaling or MAC signaling firstly indicates the terminal candidate beams or candidate beam combinations, and then indicates through DCI that the candidate beams or the beams or beam combinations in the candidate beam combinations are the second beams corresponding to the channels that the terminal needs to evaluate.
  • the base station when the base station communicates with the terminal through the first beam and needs to switch to the second beam, it can send indication information to the terminal, instructing the terminal to evaluate the channel corresponding to the second beam, and report the evaluation
  • whether to switch to the second beam to communicate with the terminal can be determined according to the evaluation result, which is beneficial to avoid communication problems caused by switching to the second beam when the channel corresponding to the second beam is occupied.
  • the manner of evaluating the channel corresponding to the second beam includes at least one of the following:
  • the terminal evaluates the occupancy of the channel corresponding to the second beam that needs to be switched to, either by measuring the L1-RSSI of the channel corresponding to the second beam, or by measuring the second beam CCA or eCCA is performed on the corresponding channel, which can be referred to as receiver-assisted CCA or eCCA through existing channels/signals.
  • the following embodiments mainly illustrate the two ways.
  • Fig. 8 is a schematic flow chart of another evaluation reporting method according to an embodiment of the present disclosure.
  • the manner of evaluating the channel corresponding to the second beam includes measuring the L1-RSSI of the channel corresponding to the second beam, and the method further includes:
  • step S801 a preset aperiodic trigger state dedicated to L1-RSSI measurement sent by the base station is received, wherein the preset aperiodic trigger state is associated with at least one zero-power channel state information reference signal ZP-CSI- RS;
  • step S802 receive the DCI sent by the base station
  • the evaluating the channel corresponding to the second beam includes:
  • step S803 if it is determined that the DCI carries the preset aperiodic trigger state, measure the L1-RSSI of the channel corresponding to the second beam on the resource corresponding to the ZP-CSI-RS.
  • the base station may send a preset aperiodic trigger state to the terminal in advance, the preset aperiodic trigger state is dedicated to L1-RSSI, for example, the preset aperiodic trigger state may be sent to the terminal through RRC signaling , and the preset aperiodic trigger state is associated with at least one ZP-CSI-RS.
  • DCI may be sent to the terminal, and the DCI may carry a preset aperiodic trigger state.
  • the terminal After the terminal receives the DCI, it can detect the CSI request field in the DCI, which carries the aperiodic trigger status. If the aperiodic trigger status in the CSI request field is the preset aperiodic trigger status, it can trigger the terminal to trigger in the preset aperiodic trigger state.
  • the L1-RSSI of the channel corresponding to the second beam is measured on the resources corresponding to the state-associated ZP-CSI-RS.
  • the DCI includes uplink scheduling DCI
  • reporting the evaluation result obtained from the channel evaluation corresponding to the second beam to the base station includes:
  • the evaluation result is reported on the PUSCH scheduled by the uplink scheduling DCI.
  • the type of DCI may be DCI format 0_1 or DCI format 0_2. These two types of DCI are uplink scheduling DCI. After the terminal evaluates and obtains the L1-RSSI, it can use the uplink resources scheduled by the DCI. RSSI is reported to the base station. Accordingly, the DCI can not only realize the function of indication, but also play the role of scheduling, which is beneficial to improve communication efficiency.
  • Fig. 9 is a schematic flow chart showing yet another evaluation and reporting method according to an embodiment of the present disclosure.
  • the manner of evaluating the channel corresponding to the second beam includes performing CCA or eCCA on the channel corresponding to the second beam, and the method further includes:
  • step S901 receive the DCI sent by the base station
  • step S902 if it is determined that the DCI carries a dedicated identifier, perform CCA or eCCA on the channel corresponding to the second beam.
  • the base station sends DCI carrying a dedicated identifier to the terminal to instruct the terminal to perform CCA or eCCA on the channel corresponding to the second beam.
  • the base station can send multiple DCIs to the terminal during communication with the terminal, different DCIs can have different functions.
  • the base station can send DCIs to the terminal for regular scheduling, or indicate the COT of the channel corresponding to the first beam. Therefore, in order to instruct the terminal to perform CCA or eCCA on the channel corresponding to the second beam through the DCI, a dedicated identifier can be added to the DCI. After receiving the DCI, the terminal can determine the presence of the dedicated identifier in the DCI.
  • the DCI is at least used to instruct the terminal to perform CCA or eCCA on the channel corresponding to the second beam.
  • the DCI includes uplink scheduling DCI and/or downlink scheduling DCI
  • reporting the evaluation result obtained by evaluating the channel corresponding to the second beam to the base station includes:
  • the evaluation result is reported on the physical uplink control channel PUCCH corresponding to the HARQ corresponding to the PDSCH scheduled by the downlink scheduling DCI.
  • the DCI may be downlink scheduling DCI or uplink scheduling DCI.
  • the terminal after the terminal performs CCA or eCCA on the channel corresponding to the second beam to obtain the evaluation result, it can report the CCA or eCCA result to the base station on the uplink resource scheduled by the DCI.
  • the terminal can determine the PDSCH scheduled by the DCI, and then determine the PUCCH used to transmit the HARQ corresponding to the PDSCH, so that On the PUCCH, the result of the CCA or eCCA is reported to the base station.
  • the present disclosure also provides embodiments of the beam switching device and the evaluation reporting device.
  • Embodiments of the present disclosure also propose a beam switching device, which can be applied to a base station, and the base station can communicate with a terminal, and the terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, and an Internet of Things device and other communication devices, and the base station includes but not limited to base stations in communication systems such as 4G, 5G, and 6G.
  • the base station can communicate with the terminal through a beam, wherein the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the beam switching device includes one or more processors configured to:
  • the manner of evaluating the channel corresponding to the second beam includes measuring the L1-RSSI of the channel corresponding to the second beam, and the processor is further configured to execute:
  • the DCI carries the preset aperiodic trigger state, and is used to trigger the terminal to measure the resource corresponding to the second beam on the resource corresponding to the ZP-CSI-RS L1-RSSI of the channel.
  • the DCI includes uplink scheduling DCI; wherein, the uplink scheduling DCI is further used to instruct the terminal to report the evaluation result through a physical uplink shared channel PUSCH scheduled by the uplink scheduling DCI.
  • the processor is configured to:
  • the L1-RSSI When the L1-RSSI is greater than the first threshold, determine that the channel corresponding to the second beam is occupied, and continue to use the first beam to communicate with the terminal;
  • the L1-RSSI is smaller than the second threshold, it is determined that the channel corresponding to the second beam is idle, and switching to the second beam to communicate with the terminal.
  • the manner of evaluating the channel corresponding to the second beam includes performing CCA or eCCA on the channel corresponding to the second beam, wherein the processor is further configured to execute:
  • the DCI carries a dedicated identifier for instructing the terminal to perform CCA or eCCA on the channel corresponding to the second beam.
  • the DCI includes uplink scheduling DCI and/or downlink scheduling DCI;
  • the downlink scheduling DCI is further used to instruct the terminal to report the evaluation result through the physical uplink control channel PUCCH corresponding to the hybrid automatic repeat request HARQ corresponding to the physical downlink shared PDSCH scheduled by the downlink scheduling DCI.
  • the processor is configured to:
  • the first indication information is further used to indicate that the beam corresponding to the channel to be evaluated is the second beam
  • the processor is further configured to: send the second indication information to the terminal , used to indicate that the beam corresponding to the channel to be evaluated is the second beam.
  • Embodiments of the present disclosure also propose an evaluation and reporting device, which can be applied to a terminal that can communicate with a base station, and the terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, and an Internet of Things device and other communication devices, and the base station includes but not limited to base stations in communication systems such as 4G, 5G, and 6G.
  • the base station can communicate with the terminal through a beam, wherein the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the frequency band corresponding to the beam can include a licensed frequency band or an unlicensed frequency band.
  • the evaluation reporting device includes one or more processors, the processors are configured to execute:
  • the first indication information is used to instruct the terminal to evaluate the channel corresponding to the second beam, where the first The second beam is the beam that the base station expects to switch to;
  • the processor is configured to: report the evaluation result to the base station through the first beam.
  • the manner of evaluating the channel corresponding to the second beam includes measuring the L1-RSSI of the channel corresponding to the second beam, and the processor is further configured to execute:
  • a preset aperiodic trigger state dedicated to L1-RSSI measurement sent by the base station wherein the preset aperiodic trigger state is associated with at least one zero-power channel state information reference signal ZP-CSI-RS; receiving the DCI sent by the base station;
  • the processor is configured to execute: in the case of determining that the DCI carries the preset aperiodic trigger state, measure the resource corresponding to the second beam on the resource corresponding to the ZP-CSI-RS L1-RSSI of the channel.
  • the manner of evaluating the channel corresponding to the second beam includes performing CCA or eCCA on the channel corresponding to the second beam, and the processor is further configured to perform: receiving the channel sent by the base station DCI;
  • the DCI includes uplink scheduling DCI and/or downlink scheduling DCI
  • the processor is configured to: report the evaluation result on the PUSCH scheduled by the uplink scheduling DCI; and/or in the The physical uplink control channel PUCCH corresponding to the HARQ corresponding to the PDSCH scheduled by the downlink scheduling DCI reports the evaluation result.
  • the processor is further configured to: determine according to the first indication information that the beam corresponding to the channel to be evaluated is the second beam, and/or according to the second indication information sent by the base station It is determined that the beam corresponding to the channel to be evaluated is the second beam.
  • An embodiment of the present disclosure also proposes a communication device, including: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, the evaluation and reporting method described in any of the above embodiments is implemented .
  • Embodiments of the present disclosure also provide a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the beam switching method described in any of the foregoing embodiments are implemented.
  • Embodiments of the present disclosure also provide a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the evaluation and reporting method described in any of the above-mentioned embodiments are implemented.
  • FIG. 10 is a schematic block diagram of an apparatus 1000 for beam switching according to an embodiment of the present disclosure.
  • Apparatus 1000 may be provided as a base station.
  • the device 1000 includes a processing component 1022 , a wireless transmitting/receiving component 1024 , an antenna component 1026 , and a signal processing part specific to the wireless interface.
  • the processing component 1022 may further include one or more processors.
  • One of the processors in the processing component 1022 may be configured to implement the beam switching method described in any of the foregoing embodiments.
  • Fig. 11 is a schematic block diagram of an apparatus 1100 for evaluating and reporting according to an embodiment of the present disclosure.
  • the apparatus 1100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • device 1100 may include one or more of the following components: processing component 1102, memory 1104, power supply component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, and communication component 1116.
  • the processing component 1102 generally controls the overall operations of the device 1100, such as those associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 1102 may include one or more processors 1120 to execute instructions to complete all or part of the steps of the above-mentioned evaluation and reporting method.
  • processing component 1102 may include one or more modules that facilitate interaction between processing component 1102 and other components.
  • processing component 1102 may include a multimedia module to facilitate interaction between multimedia component 1108 and processing component 1102 .
  • the memory 1104 is configured to store various types of data to support operations at the device 1100 . Examples of such data include instructions for any application or method operating on device 1100, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 1104 can be implemented by any type of volatile or non-volatile memory device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 1106 provides power to various components of the device 1100 .
  • Power components 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 1100 .
  • the multimedia component 1108 includes a screen that provides an output interface between the device 1100 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action.
  • the multimedia component 1108 includes a front camera and/or a rear camera. When the device 1100 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 1110 is configured to output and/or input audio signals.
  • the audio component 1110 includes a microphone (MIC), which is configured to receive external audio signals when the device 1100 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 1104 or sent via communication component 1116 .
  • the audio component 1110 also includes a speaker for outputting audio signals.
  • the I/O interface 1112 provides an interface between the processing component 1102 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor assembly 1114 includes one or more sensors for providing status assessments of various aspects of device 1100.
  • the sensor component 1114 can detect the open/closed state of the device 1100, the relative positioning of components, such as the display and keypad of the device 1100, and the sensor component 1114 can also detect a change in the position of the device 1100 or a component of the device 1100 , the presence or absence of user contact with the device 1100 , the device 1100 orientation or acceleration/deceleration and the temperature change of the device 1100 .
  • Sensor assembly 1114 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • the sensor assembly 1114 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 1114 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 1116 is configured to facilitate wired or wireless communication between the apparatus 1100 and other devices.
  • the device 1100 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, 4G LTE, 5G NR or a combination thereof.
  • the communication component 1116 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 1116 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • apparatus 1100 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Realized by gate array (FPGA), controller, microcontroller, microprocessor or other electronic components, used to execute the above evaluation and reporting method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable Realized by gate array
  • controller microcontroller, microprocessor or other electronic components, used to execute the above evaluation and reporting method.

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Abstract

本公开涉及波束切换方法，包括：在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向终端发送指示信息，用于指示终端对第二波束对应的信道进行评估；接收终端上报的对第二波束对应的信道的评估结果；根据评估结果确定是否切换到第二波束以通过所述第二波束与终端进行通信。根据本公开，基站在与终端通过第一波束进行通信时，在需要切换到对应第二波束对应的信道的第二波束时，可以向终端发送指示信息，指示终端对第二波束对应的信道进行评估，并上报评估结果，进而可以根据评估结果确定是否切换到第二波束，以通过所述第二波束与终端进行通信，有利于避免在第二波束对应的信道被占用的情况下切换到第二波束而引发通信问题。

Description

波束切换、评估上报方法和装置、通信装置及存储介质 技术领域
本公开涉及通信技术领域，具体而言，涉及波束切换方法、评估上报方法、波束切换装置、评估上报装置、通信装置和计算机可读存储介质。
背景技术
基站在与终端通过波束进行通信时，当基站通过先听后说LBT(Listen Before Talk)确定波束beam1对应的信道C1空闲时(也即未被占用)，可以占用信道C1，通过波束beam1与终端通信。
在通过波束beam1与终端通信的过程中，基站可能需要进行波束切换(beam switching)，例如需要切换到波束beam2与终端进行通信，而不同波束对应信道的状况可以不同，例如在信道C1和信道C2属于非授权频段的情况下，基站只是确定了beam1对应的信道C1是空闲的，并不能确定波束beam2对应的信道C2是否为空闲的，如果贸然指示终端切换到波束beam2进行通信，可能会由于信道C2忙碌而引发问题。
发明内容
有鉴于此，本公开的实施例提出了波束切换方法、评估上报方法、波束切换装置、评估上报装置、通信装置和计算机可读存储介质，以解决相关技术中的技术问题。
根据本公开实施例的第一方面，提出一种波束切换方法，由基站执行，所述方法包括：在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向所述终端发送第一指示信息，用于指示所述终端对所述第二波束对应的信道进行评估；接收所述终端上报的对所述第二波束对应的信道的评估结果；根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
根据本公开实施例的第二方面，提出一种评估上报方法，由终端执行，所述方法包括：在与基站通过第一波束通信的情况下，接收所述基站发送的第一指示信息，所述第一指示信息用于指示所述终端对第二波束对应的信道进行评估；对所述第二波束对应的信道进行评估；将对所述第二波束对应的信道评估得到的评估结果上报至所述基站。
根据本公开实施例的第三方面，提出一种波束切换装置，包括一个或多个处理器，所述处理器被配置为执行：在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向所述终端发送第一指示信息，用于指示所述终端对所述第二波束对应的信道进行评估；接收所述终端上报的对所述第二波束对应的信道的评估结果；根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
根据本公开实施例的第四方面，提出一种评估上报装置，包括一个或多个处理器，所述处理器被配置为执行：在与基站通过第一波束通信的情况下，接收所述基站发送的第一指示信息，所述第一指示信息用于指示所述终端对第二波束对应的信道进行评估；对所述第二波束对应的信道进行评估；将对所述第二波束对应的信道评估得到的评估结果上报至所述基站。
根据本公开实施例的第五方面，提出一种通信装置，包括：处理器；用于存储处理器可执行指令的存储器；其中，所述处理器被配置为执行上述波束切换方法。
根据本公开实施例的第六方面，提出一种通信装置，包括：处理器；用于存储处理器可执行指令的存储器；其中，所述处理器被配置为执行上述评估上报方法。
根据本公开实施例的第七方面，提出一种计算机可读存储介质，用于存储计算机程序，所述程序被处理器执行时实现上述波束切换方法中的步骤。
根据本公开实施例的第八方面，提出一种计算机可读存储介质，用于存储计算机程序，所述程序被处理器执行时实现上述评估上报方法中的步骤。
根据本公开的实施例，基站在与终端通过的第一波束进行通信时，在需要切换到第二波束时，可以向终端发送指示信息，指示终端对第二波束对应的信道进行评估，并上报评估结果，进而可以根据评估结果确定是否切换到第二波束上与终端进行通信，有利于避免在第二波束对应的信道被占用的情况下切换到第二波束而引发通信问题。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是根据本公开的实施例示出的一种波束切换方法的示意流程图。
图2是根据本公开的实施例示出的另一种波束切换方法的示意流程图。
图3是根据本公开的实施例示出的又一种波束切换方法的示意流程图。
图4是根据本公开的实施例示出的又一种波束切换方法的示意流程图。
图5是根据本公开的实施例示出的又一种波束切换方法的示意流程图。
图6是根据本公开的实施例示出的一种指示信息和评估结果的时序示意图。
图7是根据本公开的实施例示出的一种评估上报方法的示意流程图。
图8是根据本公开的实施例示出的另一种评估上报方法的示意流程图。
图9是根据本公开的实施例示出的又一种评估上报方法的示意流程图。
图10是根据本公开的实施例示出的一种用于波束切换的装置的示意框图。
图11是根据本公开的实施例示出的一种用于评估上报的装置的示意框图。
具体实施方式
下面将联合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一波束也可以被称为第二波束，类似地，第二波束也可以被称为第一波束。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
出于简洁和便于理解的目的，本文在表征大小关系时，所使用的术语为“大于”或“小于”、“高于”或“低于”。但对于本领域技术人员来说，可以理解：术语“大于” 也涵盖了“大于等于”的含义，“小于”也涵盖了“小于等于”的含义；术语“高于”涵盖了“高于等于”的含义，“低于”也涵盖了“低于等于”的含义。
图1是根据本公开的实施例示出的一种波束切换方法的示意流程图。本实施例所示的波束切换方法可以由基站执行，所述基站可以与终端通信，所述终端包括但不限于手机、平板电脑、可穿戴设备、传感器、物联网设备等通信装置，所述基站包括但不限于4G、5G、6G等通信系统中的基站。
在一个实施例中，所述基站可以通过波束与终端通信，其中，波束对应的频段可以包括授权频段，也可以包括非授权频段，以下实施例主要针对基站与终端之间通过非授权频段的波束进行通信的场景对本公开的技术方案进行示例性说明。
如图1所示，所述波束切换方法可以包括以下步骤：
在步骤S101中，在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向所述终端发送指示信息，用于指示所述终端对所述第二波束对应的信道进行评估；
在步骤S102中，接收所述终端上报的对所述第二波束对应的信道的评估结果；
在步骤S103中，根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
在一个实施例中，基站在与终端通过第一波束通信时，可能会需要进行波束切换，例如切换到第二波束进行通信，其中，第一波束对应信道C1，第二波束对应信道C2，信道C1和信道C2可以属于非授权频段。
由于基站在确定波束对应的信道是空闲时，才会使用该波束进行通信，所以基站正在使用第一波束与终端进行通信时，是已经确定了第一波束对应的信道未被占用，因此，可以通过第一波束向终端发送指示信息，指示终端对第二波束对应的信道进行评估。
终端作为接收端receiver，在接收到基站的指示信息后，可以对第二波束对应的信道进行评估，关于对第二波束对应的信道的评估方式，在后续实施例中进行说明。终端在完成对第二波束对应的信道的测量后，可以将评估结果上报给基站，例如通过第一波束上报评估结果给基站。
基站根据评估结果可以确定是否切换到第二波束以通过所述第二波束与终端 进行通信，例如基站根据评估结果可以确定第二波束对应的信道C2是否被占用，若未被占用，也即空闲时，可以指示终端切换到第二波束进行通信，若已被占用，那么可以持续使用第一波束与终端进行通信。
需要说明的是，第二波束可以是一个波束，也可以是多个波束。基站可以指示终端对一个波束对应的信道进行评估，也可以指示终端对多个波束对应的信道进行评估。
例如在指示终端对一个第二波束对应的信道进行评估时，终端可以上报针对这个第二波束对应的信道的评估结果，基站在根据评估结果确定信道空闲的情况下，可以指示终端切换到这个第二波束；在根据评估结果确定信道被占用的情况下，则不必指示终端切换到第二波束，而是持续使用第一波束与终端进行通信。
例如在指示终端对多个第二波束对应的信道进行评估时，终端可以上报针对多个第二波束的对应的信道的评估结果，还可以标注每个评估结果对应的波束，基站在根据多个评估结果确定至少一个信道空闲的情况下，可以指示终端切换到空闲信道对应的第二波束，例如由基站根据实际情况在多个空闲的信道中选择一个信道对应的第二波束指示给终端；在根据评估结果确定所有第二波束对应的信道都被占用的情况下，则不必指示终端切换到第二波束，而是持续使用第一波束与终端进行通信。
在一个实施例中，所述第一指示信息还用于指示需要评估信道对应的波束为所述第二波束，和/或所述方法还包括：向所述终端发送第二指示信息，用于指示需要评估信道对应的波束为所述第二波束。
在一个实施例中，基站通过第一指示信息可以触发终端执行评估操作，但是具体针对哪些第二波束的信道进行评估，也是需要基站指示的，例如基站通过第一指示信息可以既触发终端执行评估操作，又指示终端需要评估信道对应的波束为所述第二波束；或者基站可以通过第一指示信触发终端执行评估操作，通过第二指示信息指示终端需要评估信道对应的波束为所述第二波束。
在一个实施例中，第一指示信息包括下行控制信息DCI(Downlink Control Information)；第二指示信息包括以下至少之一：无线资源控制RRC(Radio Resource Control)信令、介质访问控制MAC(Media Access Control)信令。
在通过DCI指示终端需要评估信道对应的波束为所述第二波束的情况下，可以设置DCI中一个或多个比特用于指示需要终端评估的感知波束(sensing beam)，所指示 的感知波束就是需要评估的第二波束。用于指示的比特的数量，可以与候选波束(可以是预先约定的)的数量相关，例如存在4个候选波束，基站在其中选择一个或多个波束作为感知波束，那么可以通过2个比特进行指示，指示终端对感知波束对应的信道进行评估；例如存在2个候选波束，基站在其中选择一个或多个波束作为第二波束，那么可以通过1个比特进行指示，指示终端对第二波束对应的信道进行评估。
在第二指示信息为RRC信令的情况下，RRC信令中也可以存在非周期触发状态字段，可以通过该字段中的QCL(Quasi Co-Location，准共址)参数指示需要终端测量的信道对应的波束。在第二指示信息为MAC信令的情况下，可以通过MAC CE(信息元素)指示需要终端测量的信道对应的波束。这两种情况指示信息所需占用比特的数量与前述实施例类似，因此不再赘述。
另外，还可以通过第一指示信息和第二指示信息联合指示需要评估信道对应的波束为所述第二波束，例如联合RRC信令和DCI指示终端需要评估信道对应的波束为所述第二波束，或者联合MAC信令和DCI指示终端需要评估信道对应的波束为所述第二波束。例如先通过RRC信令或者MAC信令指示终端候选波束或者候选波束组合，然后通过DCI指示候选波束或者候选波束组合中的波束或波束组合为终端需要评估信道对应的第二波束。
在一个实施例中，基站对第一波束对应的信道占用时间(Channel Occupied Time，COT)可以为COT1。
基站在持续使用第一波束与终端进行通信的情况下，对于第一波束对应的信道可以持续占用，直至COT1结束。
基站在切换到第二波束以通过所述第二波束与终端进行通信的情况下，可以重新确定对第二波束对应的信道C2的信道占用时间，例如COT2，进而对第二波束对应的信道C2进行占用，直至COT2结束；也可以继续按照COT1进行占用，也即在波束切换前对于第一波束对应的信道C1占用的时长，和在波束切换后第二波束对应的信道C2占用的时长之和为COT1。
根据本公开的实施例，基站在与终端通过第一波束进行通信时，在需要切换到第二波束时，可以向终端发送指示信息，指示终端对第二波束对应的信道进行评估，并上报评估结果，进而可以根据评估结果确定是否切换到第二波束上与终端进行通信，有利于避免在第二波束对应的信道被占用的情况下切换到第二波束而引发通信问题。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括以下至少之一：
测量所述第二波束对应的信道的层1接收信号强度指示L1-RSSI(Received Signal Strength Indication)；
对所述第二波束对应的信道进行空闲信道评估CCA(Clear Channel Assessment)或增强空闲信道评估eCCA，其中e表示增强enhance。
终端作为在非授权频段通信的接收端，对需要切换到的第二波束对应的信道的占用情况进行评估的方式，可以是测量第二波束对应的信道的L1-RSSI，也可以是对第二波束对应的信道进行CCA或eCCA。以下实施例主要针对这两种方式进行示例性说明。
图2是根据本公开的实施例示出的另一种波束切换方法的示意流程图。如图2所示，对所述第二波束对应的信道进行评估的方式包括测量所述第二波束对应的信道的L1-RSSI，所述方法还包括：
在步骤S201中，向所述终端发送专用于L1-RSSI测量的预设非周期触发状态(aperiodic trigger state)，其中，所述预设非周期触发状态关联有至少一个零功率信道状态信息参考信号ZP-CSI-RS(Zero Power-Channel State Information-Reference Signal)；
其中，所述向所述终端发送第一指示信息包括：
在步骤S202中，向所述终端发送下行控制信息DCI，所述DCI中携带有所述预设非周期触发状态，用于触发所述终端在所述ZP-CSI-RS对应资源上测量所述第二波束对应的信道得到L1-RSSI。
在一个实施例中，基站可以预先向终端发送预设非周期触发状态，该预设非周期触发状态式专用于L1-RSSI的，例如可以通过RRC信令将预设非周期触发状态发送至终端，并且预设非周期触发状态关联有至少一个ZP-CSI-RS。
进而在需要进行波束切换时，可以向终端发送DCI，在DCI中可以携带有预设非周期触发状态。终端接收到DCI后，可以检测DCI中的CSI request域，其中携带有非周期触发状态，若CSI request域中的非周期触发状态为预设非周期触发状态，可以触发终端在预设非周期触发状态关联的ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
在一个实施例中，所述DCI包括上行调度DCI；
其中，所述上行调度DCI还用于指示所述终端通过所述上行调度DCI调度的物理上行共享信道PUSCH(Physical Uplink Shared Channel)上报所述评估结果。
在一个实施例中，DCI的类型可以是DCI format 0_1或DCI format 0_2，这两种类型的DCI为上行调度DCI，终端在评估得到L1-RSSI后，可以在DCI所调度的上行资源将L1-RSSI上报至基站。据此，DCI不仅能够实现指示作用，还可以起到调度作用，有利于提高通信效率。
图3是根据本公开的实施例示出的又一种波束切换方法的示意流程图。如图3所示，所述根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信包括：
在步骤S301中，在所述L1-RSSI大于第一阈值的情况下，确定所述第二波束对应的信道被占用，持续使用所述第一波束与所述终端通信；
在步骤S302中，在所述L1-RSSI小于第二阈值的情况下，确定所述第二波束对应的信道空闲，切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
在一个实施例中，基站在接收到终端上报的L1-RSSI后，可以基于L1-RSSI确定第二波束对应的信道是否空闲。
在L1-RSSI较大的情况下，例如大于第一阈值，可以确定第二波束对应的信道被占用，那么切换到第二波束将可能引发通信问题，从而可以继续保持使用第一波束与终端进行通信。
在L1-RSSI较小的情况下，例如小于第二阈值，可以确定第二波束对应的信道空闲，那么可以切换到第二波束，以通过所述第二波束与所述终端进行通信，从而可以指示终端进行波束切换，切换到第二波束进行通信。其中，第一阈值和第二阈值可以根据需要进行设置，第二阈值小于或等于第一阈值。
图4是根据本公开的实施例示出的又一种波束切换方法的示意流程图。如图4所示，对所述第二波束对应的信道进行评估的方式包括对所述第二波束对应的信道进行CCA或eCCA，其中，所述向所述终端发送指示信息包括：
在步骤S401中，向所述终端发送DCI，所述DCI中携带有专用标识符，用于指示所述终端对所述第二波束对应的信道进行CCA或eCCA。
在一个实施例中，基站向终端发送携带有专用标识符的DCI，来指示终端对第二波束对应的信道进行CCA或eCCA。
由于基站在与终端通信过程中，可以向终端发送多个DCI，不同DCI的作用可以有所不同，例如基站可以向终端发送DCI进行常规调度，或者指示对于第一波束对应信道的COT。因此，为了通过DCI指示终端对第二波束对应的信道进行CCA或eCCA，可以在DCI中添加专用标识符，终端在接收到DCI后，在确定DCI中存在专用标识符的情况下，可以确定该DCI至少用于指示终端对第二波束对应的信道进行CCA或eCCA。
在一个实施例中，所述DCI包括上行调度DCI和/或下行调度DCI；
其中，所述上行调度DCI还用于指示所述终端通过所述上行调度DCI调度的PUSCH向上报所述评估结果；
所述下行调度DCI还用于指示所述终端通过所述下行调度DCI调度的物理下行共享PDSCH(Physical Downlink Shared CHannel)对应的混合自动重传请求HARQ(Hybrid Automatic Repeat reQuest)对应的物理上行控制信道PUCCH(Physical Uplink Control Channel)向上报所述评估结果。
在一个实施例中，所述DCI可以是下行调度DCI，也可以是上行调度DCI。
以上行调度DCI为例，终端在对第二波束对应的信道进行CCA或eCCA得到评估结果后，可以在DCI所调度的上行资源将CCA或eCCA的结果上报至基站。
以下行调度DCI为例，终端在对第二波束对应的信道进行CCA或eCCA得到评估结果后，可以确定DCI调度的PDSCH，进而确定用于传输该PDSCH对应的HARQ的PUCCH，从而可以在确定的PUCCH上，将CCA或eCCA的结果上报至基站。
图5是根据本公开的实施例示出的又一种波束切换方法的示意流程图。如图5所示，所述根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信包括：
在步骤S501中，在CCA或eCCA的结果为所述第二波束对应的信道被占用的情况下，持续使用所述第一波束与所述终端通信；
在步骤S502中，在CCA或eCCA的结果为所述第二波束对应的信道空闲的情况下，切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
在一个实施例中，基站在接收到终端上报的CCA或eCCA的结果后，可以基于CCA或eCCA的结果确定第二波束对应的信道是否空闲。
其中，CCA或eCCA的结果可以以辅助信息的形式上报，例如占用1比特，该比特位0时表示第二波束对应的信道被占用，该比特位1时表示第二波束对应的信道空闲。那么在确定第二授权频段的信道被占用的情况下，切换到第二波束将可能引发通信问题，从而可以继续保持使用第一波束与终端进行通信；在确定第二授权频段的信道空闲的情况下，可以切换到第二波束，以通过所述第二波束与所述终端进行通信，从而可以指示终端进行波束切换，切换到第二波束进行通信。
图6是根据本公开的实施例示出的一种指示信息和评估结果的时序示意图。
如图6所示，基站在与终端通过第一波束beam1通信的情况下，例如第一波束beam1对应信道C1，对于信道C1的占用时间为COT1。在需要进行波束切换时，例如需要切换到第二波束beam2时，对应图6所示t1时刻，可以向终端发送第一指示信息，触发终端对第二波束beam2对应的信道C2进行评估。
终端接收到第一指示信息后，可以对第二波束对应的信道进行评估，并将评估结果上报给基站，例如在图6所示的t2时刻上报。
基站接收到评估结果后，可以根据评估结果确定信道C2是否空闲，在确定信道C2空闲的情况下，可以指示终端进行波束切换，切换到第二波束beam2上进行通信，在确定信道C2被占用的情况下，则不必指示终端进行波束切换，而是继续通过第一波束beam1进行通信。
基站在持续使用第一波束与终端进行通信的情况下，对于第一波束对应的信道C1可以持续占用，直至COT1结束。
基站在切换到第二波束以通过所述第二波束与终端进行通信的情况下，可以重新确定对第二波束对应的信道C2的信道占用时间，例如COT2，进而对第二波束对应的信道C2进行占用，直至COT2结束；也可以继续按照COT1进行占用，也即在波束切换前对于第一波束对应的信道C1占用的时长，和在波束切换后第二波束对应的信道C2占用的时长之和为COT1。
图7是根据本公开的实施例示出的一种评估上报方法的示意流程图。本实施例所示的波束切换方法可以由终端执行，所述终端可以与基站通信，所述终端包括但不限于手机、平板电脑、可穿戴设备、传感器、物联网设备等通信装置，所述基站包括 但不限于4G、5G、6G等通信系统中的基站。
在一个实施例中，所述基站可以通过波束与终端通信，其中，波束对应的频段可以包括授权频段，也可以包括非授权频段，以下实施例主要针对基站与终端之间通过非授权频段的波束进行通信的场景对本公开的技术方案进行示例性说明。
如图7所示，所述波束切换方法可以包括以下步骤：
在步骤S701中，在与基站通过第一波束通信的情况下，接收所述基站发送的第一指示信息，所述第一指示信息用于指示所述终端对第二波束对应的信道进行评估，其中，所述第二波束为所述基站期望切换到的波束；
在步骤S702中，对所述第二波束对应的信道进行评估；
在步骤S703中，将对所述第二波束对应的信道评估得到的评估结果上报至所述基站。
在一个实施例中，基站在与终端通过第一波束通信时，可能会需要进行波束切换，例如切换到第二波束进行通信，其中，第一波束对应信道C1，第二波束对应信道C2，信道C1和信道C2可以属于非授权频段。
由于基站在确定波束对应的信道是空闲时，才会使用该波束进行通信，所以基站正在使用第一波束与终端进行通信时，是已经确定了第一波束对应的信道未被占用，因此，可以通过第一波束向终端发送指示信息，指示终端对第二波束对应的信道进行评估。
终端作为接收端receiver，在接收到基站的指示信息后，可以对第二波束对应的信道进行评估，关于对第二波束对应的信道的评估方式，在后续实施例中进行说明。终端在完成对第二波束对应的信道的测量后，可以将评估结果上报给基站，例如通过第一波束上报评估结果给基站。
基站根据评估结果可以确定是否切换到第二波束以通过所述第二波束与终端进行通信，例如基站根据评估结果可以确定第二波束对应的第二信道C2是否被占用，若未被占用，也即空闲时，可以指示终端切换到第二波束进行通信，若已被占用，那么可以持续使用第一波束与终端进行通信。
需要说明的是，第二波束可以是一个波束，也可以是多个波束。基站可以指示终端对一个波束对应的信道进行评估，也可以指示终端对多个波束对应的信道进行评 估。
例如在指示终端对一个第二波束对应的信道进行评估时，终端可以上报针对这个第二波束对应的信道的评估结果，基站在根据评估结果确定信道空闲的情况下，可以指示终端切换到这个第二波束；在根据评估结果确定信道被占用的情况下，则不必指示终端切换到第二波束，而是持续使用第一波束与终端进行通信。
例如在指示终端对多个第二波束对应的信道进行评估时，终端可以上报针对多个第二波束的对应的信道的评估结果，还可以标注每个评估结果对应的波束，基站在根据多个评估结果确定至少一个信道空闲的情况下，可以指示终端切换到空闲的信道对应的第二波束，例如由基站根据实际情况在多个空闲的信道中选择一个信道对应的第二波束指示给终端；在根据评估结果确定所有第二波束对应的信道都被占用的情况下，则不必指示终端切换到第二波束，而是持续使用第一波束与终端进行通信。
在一个实施例中，所述将对所述第二波束对应的信道评估得到的评估结果上报至所述基站包括：通过所述第一波束将所述评估结果上报至所述基站。
在一个实施例中，所述第一指示信息还用于指示需要评估信道对应的波束为所述第二波束，和/或所述方法还包括：向所述终端发送第二指示信息，用于指示需要评估信道对应的波束为所述第二波束。
在一个实施例中，基站通过第一指示信息可以触发终端执行评估操作，但是具体针对哪些第二波束的信道进行评估，也是需要基站指示的，例如基站通过第一指示信息可以既触发终端执行评估操作，又指示终端需要评估信道对应的波束为所述第二波束；或者基站可以通过第一指示信触发终端执行评估操作，通过第二指示信息指示终端需要评估信道对应的波束为所述第二波束。
在一个实施例中，第一指示信息包括下行控制信息DCI；第二指示信息包括以下至少之一：无线资源控制RRC信令、介质访问控制MAC信令。
在通过DCI指示终端需要评估信道对应的波束为所述第二波束的情况下，可以设置DCI中一个或多个比特用于指示需要终端评估的感知波束(sensing beam)，所指示的感知波束就是需要评估的第二波束。用于指示的比特的数量，可以与候选波束(可以是预先约定的)的数量相关，例如存在4个候选波束，基站在其中选择一个或多个波束作为感知波束，那么可以通过2个比特进行指示，指示终端对感知波束对应的信道进行评估；例如存在2个候选波束，基站在其中选择一个或多个波束作为第二波束， 那么可以通过1个比特进行指示，指示终端对第二波束对应的信道进行评估。
在第二指示信息为RRC信令的情况下，RRC信令中也可以存在非周期触发状态字段，可以通过该字段中的QCI参数指示需要终端测量的信道对应的波束。在第二指示信息为MAC信令的情况下，可以通过MAC CE指示需要终端测量的信道对应的波束。这两种情况指示信息所需占用比特的数量与前述实施例类似，因此不再赘述。
另外，还可以通过第一指示信息和第二指示信息联合指示需要评估信道对应的波束为所述第二波束，例如联合RRC信令和DCI指示终端需要评估信道对应的波束为所述第二波束，或者联合MAC信令和DCI指示终端需要评估信道对应的波束为所述第二波束。例如先通过RRC信令或者MAC信令指示终端候选波束或者候选波束组合，然后通过DCI指示候选波束或者候选波束组合中的波束或波束组合为终端需要评估信道对应的第二波束。
根据本公开的实施例，基站在与终端通过第一波束进行通信时，在需要切换到第二波束时，可以向终端发送指示信息，指示终端对第二波束对应的信道进行评估，并上报评估结果，进而可以根据评估结果确定是否切换到第二波束上与终端进行通信，有利于避免在第二波束对应的信道被占用的情况下切换到第二波束而引发通信问题。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括以下至少之一：
测量所述第二波束对应的信道的层1接收信号强度指示L1-RSSI；
对所述第二波束对应的信道进行空闲信道评估CCA或增强空闲信道评估eCCA。
终端作为在非授权频段通信的接收端，对需要切换到的第二波束对应的信道占用情况进行评估的方式，可以是测量第二波束对应的信道的L1-RSSI，也可以是对第二波束对应的信道进行CCA或eCCA，这种方式可以称作通过现存信道/信号的基于接收端辅助的CCA或eCCA。以下实施例主要针对这两种方式进行示例性说明。
图8是根据本公开的实施例示出的另一种评估上报方法的示意流程图。如图8所示，对所述第二波束对应的信道进行评估的方式包括测量所述第二波束对应的信道的L1-RSSI，所述方法还包括：
在步骤S801中，接收所述基站发送的专用于L1-RSSI测量的预设非周期触发状态，其中，所述预设非周期触发状态关联有至少一个零功率信道状态信息参考信号 ZP-CSI-RS；
在步骤S802中，接收所述基站发送的DCI；
其中，所述对所述第二波束对应的信道进行评估包括：
在步骤S803中，在确定所述DCI中携带有所述预设非周期触发状态的情况下，在所述ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
在一个实施例中，基站可以预先向终端发送预设非周期触发状态，该预设非周期触发状态式专用于L1-RSSI的，例如可以通过RRC信令将预设非周期触发状态发送至终端，并且预设非周期触发状态关联有至少一个ZP-CSI-RS。
进而在需要进行波束切换时，可以向终端发送DCI，在DCI中可以携带有预设非周期触发状态。终端接收到DCI后，可以检测DCI中的CSI request域，其中携带有非周期触发状态，若CSI request域中的非周期触发状态为预设非周期触发状态，可以触发终端在预设非周期触发状态关联的ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
在一个实施例中，所述DCI包括上行调度DCI，所述将对所述第二波束对应的信道评估得到的评估结果上报至所述基站包括：
在所述上行调度DCI调度的PUSCH上报所述评估结果。
在一个实施例中，DCI的类型可以是DCI format 0_1或DCI format 0_2，这两种类型的DCI为上行调度DCI，终端在评估得到L1-RSSI后，可以在DCI所调度的上行资源将L1-RSSI上报至基站。据此，DCI不仅能够实现指示作用，还可以起到调度作用，有利于提高通信效率。
图9是根据本公开的实施例示出的又一种评估上报方法的示意流程图。如图9所示，对所述第二波束对应的信道进行评估的方式包括对所述第二波束对应的信道进行CCA或eCCA，所述方法还包括：
在步骤S901中，接收所述基站发送的DCI；
其中，所述对所述第二波束对应的信道进行评估包括：
在步骤S902中，在确定所述DCI中携带有专用标识符的情况下，对所述第二波束对应的信道进行CCA或eCCA。
在一个实施例中，基站向终端发送携带有专用标识符的DCI，来指示终端对第 二波束对应的信道进行CCA或eCCA。
由于基站在与终端通信过程中，可以向终端发送多个DCI，不同DCI的作用可以有所不同，例如基站可以向终端发送DCI进行常规调度，或者指示对于第一波束对应信道的COT。因此，为了通过DCI指示终端对第二波束对应的信道进行CCA或eCCA，可以在DCI中添加专用标识符，终端在接收到DCI后，在确定DCI中存在专用标识符的情况下，可以确定该DCI至少用于指示终端对第二波束对应的信道进行CCA或eCCA。
在一个实施例中，所述DCI包括上行调度DCI和/或下行调度DCI，所述将对所述第二波束对应的信道评估得到的评估结果上报至所述基站包括：
在所述上行调度DCI调度的PUSCH向上报所述评估结果；和/或
在所述下行调度DCI调度的PDSCH对应的HARQ对应的物理上行控制信道PUCCH向上报所述评估结果。
在一个实施例中，所述DCI可以是下行调度DCI，也可以是上行调度DCI。
以上行调度DCI为例，终端在对第二波束对应的信道进行CCA或eCCA得到评估结果后，可以在DCI所调度的上行资源将CCA或eCCA的结果上报至基站。
以下行调度DCI为例，终端在对第二波束对应的信道进行CCA或eCCA得到评估结果后，可以确定DCI调度的PDSCH，进而确定用于传输该PDSCH对应的HARQ的PUCCH，从而可以在确定的PUCCH上，将CCA或eCCA的结果上报至基站。
与前述的波束切换方法和评估上报方法的实施例相对应，本公开还提供了波束切换装置和评估上报装置的实施例。
本公开的实施例还提出一种波束切换装置，所述装置可以适用于基站，所述基站可以与终端通信，所述终端包括但不限于手机、平板电脑、可穿戴设备、传感器、物联网设备等通信装置，所述基站包括但不限于4G、5G、6G等通信系统中的基站。
在一个实施例中，所述基站可以通过波束与终端通信，其中，波束对应的频段可以包括授权频段，也可以包括非授权频段，以下实施例主要针对基站与终端之间通过非授权频段的波束进行通信的场景对本公开的技术方案进行示例性说明。
在一个实施例中，所述波束切换装置包括一个或多个处理器，所述处理器被配置为执行：
在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向所述终端发送第一指示信息，用于指示所述终端对所述第二波束对应的信道进行评估；
接收所述终端上报的对所述第二波束对应的信道的评估结果；
根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括以下至少之一：测量所述第二波束对应的信道的层1接收信号强度指示L1-RSSI；对所述第二波束对应的信道进行空闲信道评估CCA或增强空闲信道评估eCCA。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括测量所述第二波束对应的信道的L1-RSSI，所述处理器还被配置为执行：
向所述终端发送专用于L1-RSSI测量的预设非周期触发状态，其中，所述预设非周期触发状态关联有至少一个零功率信道状态信息参考信号ZP-CSI-RS；
向所述终端发送下行控制信息DCI，所述DCI中携带有所述预设非周期触发状态，用于触发所述终端在所述ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
在一个实施例中，所述DCI包括上行调度DCI；其中，所述上行调度DCI还用于指示所述终端通过所述上行调度DCI调度的物理上行共享信道PUSCH上报所述评估结果。
在一个实施例中，所述处理器被配置为执行：
在所述L1-RSSI大于第一阈值的情况下，确定所述第二波束对应的信道被占用，持续使用所述第一波束与所述终端通信；
在所述L1-RSSI小于第二阈值的情况下，确定所述第二波束对应的信道空闲，切换到所述第二波束与所述终端通信。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括对所述第二波束对应的信道进行CCA或eCCA，其中，所述处理器还被配置为执行：
向所述终端发送DCI，所述DCI中携带有专用标识符，用于指示所述终端对所述第二波束对应的信道进行CCA或eCCA。
在一个实施例中，所述DCI包括上行调度DCI和/或下行调度DCI；
其中，所述上行调度DCI还用于指示所述终端通过所述上行调度DCI调度的PUSCH向上报所述评估结果；
所述下行调度DCI还用于指示所述终端通过所述下行调度DCI调度的物理下行共享PDSCH对应的混合自动重传请求HARQ对应的物理上行控制信道PUCCH向上报所述评估结果。
在一个实施例中，所述处理器被配置为执行：
在CCA或eCCA的结果为所述第二波束对应的信道被占用的情况下，持续使用所述第一波束与所述终端通信；
在CCA或eCCA的结果为所述第二波束对应的信道空闲的情况下，切换到所述第二波束与所述终端通信。
在一个实施例中，所述第一指示信息还用于指示需要评估信道对应的波束为所述第二波束，和/或所述处理器还被配置为：向所述终端发送第二指示信息，用于指示需要评估信道对应的波束为所述第二波束。
本公开的实施例还提出一种评估上报装置，所述装置可以适用于终端，所述终端可以与基站通信，所述终端包括但不限于手机、平板电脑、可穿戴设备、传感器、物联网设备等通信装置，所述基站包括但不限于4G、5G、6G等通信系统中的基站。
在一个实施例中，所述基站可以通过波束与终端通信，其中，波束对应的频段可以包括授权频段，也可以包括非授权频段，以下实施例主要针对基站与终端之间通过非授权频段的波束进行通信的场景对本公开的技术方案进行示例性说明。
在一个实施例中，所述评估上报装置，包括一个或多个处理器，所述处理器被配置为执行：
在与基站通过第一波束通信的情况下，接收所述基站发送的第一指示信息，所述第一指示信息用于指示所述终端对第二波束对应的信道进行评估，其中，所述第二波束为所述基站期望切换到的波束；
对所述第二波束对应的信道进行评估；
将对所述第二波束对应的信道评估得到的评估结果上报至所述基站。
在一个实施例中，所述处理器被配置为执行：通过所述第一波束将所述评估结果上报至所述基站。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括以下至少之一：测量所述第二波束对应的信道的层1接收信号强度指示L1-RSSI；对所述第二波束对应的信道进行空闲信道评估CCA或增强空闲信道评估eCCA。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括测量所述第二波束对应的信道的L1-RSSI，所述处理器还被配置为执行：
接收所述基站发送的专用于L1-RSSI测量的预设非周期触发状态，其中，所述预设非周期触发状态关联有至少一个零功率信道状态信息参考信号ZP-CSI-RS；接收所述基站发送的DCI；
其中，所述处理器被配置为执行：在确定所述DCI中携带有所述预设非周期触发状态的情况下，在所述ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
在一个实施例中，所述DCI包括上行调度DCI，所述处理器被配置为执行：在所述上行调度DCI调度的PUSCH上报所述评估结果。
在一个实施例中，对所述第二波束对应的信道进行评估的方式包括对所述第二波束对应的信道进行CCA或eCCA，所述处理器还被配置为执行：接收所述基站发送的DCI；
其中，所述处理器被配置为执行：在确定所述DCI中携带有专用标识符的情况下，对所述第二波束对应的信道进行CCA或eCCA。
在一个实施例中，所述DCI包括上行调度DCI和/或下行调度DCI，所述处理器被配置为执行：在所述上行调度DCI调度的PUSCH向上报所述评估结果；和/或在所述下行调度DCI调度的PDSCH对应的HARQ对应的物理上行控制信道PUCCH向上报所述评估结果。
在一个实施例中，所述处理器还被配置为执行：根据所述第一指示信息确定需要评估信道对应的波束为所述第二波束，和/或根据所述基站发送的第二指示信息确定需要评估信道对应的波束为所述第二波束。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在相关方法的实施例中进行了详细描述，此处将不做详细阐述说明。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法 实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
本公开的实施例还提出一种通信装置，包括：处理器；用于存储计算机程序的存储器；其中，当所述计算机程序被处理器执行时，实现上述任一实施例所述的波束切换方法。
本公开的实施例还提出一种通信装置，包括：处理器；用于存储计算机程序的存储器；其中，当所述计算机程序被处理器执行时，实现上述任一实施例所述的评估上报方法。
本公开的实施例还提出一种计算机可读存储介质，用于存储计算机程序，当所述计算机程序被处理器执行时，实现上述任一实施例所述的波束切换方法中的步骤。
本公开的实施例还提出一种计算机可读存储介质，用于存储计算机程序，当所述计算机程序被处理器执行时，实现上述任一实施例所述的评估上报方法中的步骤。
如图10所示，图10是根据本公开的实施例示出的一种用于波束切换的装置1000的示意框图。装置1000可以被提供为一基站。参照图10，装置1000包括处理组件1022、无线发射/接收组件1024、天线组件1026、以及无线接口特有的信号处理部分，处理组件1022可进一步包括一个或多个处理器。处理组件1022中的其中一个处理器可以被配置为实现上述任一实施例所述的波束切换方法。
图11是根据本公开的实施例示出的一种用于评估上报的装置1100的示意框图。例如，装置1100可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图11，装置1100可以包括以下一个或多个组件：处理组件1102，存储器1104，电源组件1106，多媒体组件1108，音频组件1110，输入/输出(I/O)的接口1112，传感器组件1114，以及通信组件1116。
处理组件1102通常控制装置1100的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1102可以包括一个或多个处理器1120来执行指令，以完成上述的评估上报方法的全部或部分步骤。此外，处理组件1102 可以包括一个或多个模块，便于处理组件1102和其他组件之间的交互。例如，处理组件1102可以包括多媒体模块，以方便多媒体组件1108和处理组件1102之间的交互。
存储器1104被配置为存储各种类型的数据以支持在装置1100的操作。这些数据的示例包括用于在装置1100上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1104可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1106为装置1100的各种组件提供电力。电源组件1106可以包括电源管理系统，一个或多个电源，及其他与为装置1100生成、管理和分配电力相关联的组件。
多媒体组件1108包括在所述装置1100和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件1108包括一个前置摄像头和/或后置摄像头。当装置1100处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1110被配置为输出和/或输入音频信号。例如，音频组件1110包括一个麦克风(MIC)，当装置1100处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1104或经由通信组件1116发送。在一些实施例中，音频组件1110还包括一个扬声器，用于输出音频信号。
I/O接口1112为处理组件1102和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1114包括一个或多个传感器，用于为装置1100提供各个方面的状 态评估。例如，传感器组件1114可以检测到装置1100的打开/关闭状态，组件的相对定位，例如所述组件为装置1100的显示器和小键盘，传感器组件1114还可以检测装置1100或装置1100一个组件的位置改变，用户与装置1100接触的存在或不存在，装置1100方位或加速/减速和装置1100的温度变化。传感器组件1114可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1114还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1114还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1116被配置为便于装置1100和其他设备之间有线或无线方式的通信。装置1100可以接入基于通信标准的无线网络，如WiFi，2G或3G，4G LTE、5G NR或它们的组合。在一个示例性实施例中，通信组件1116经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件1116还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置1100可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述评估上报方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1104，上述指令可由装置1100的处理器1120执行以完成上述评估上报方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来 限制。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上对本公开实施例所提供的方法和装置进行了详细介绍，本文中应用了具体个例对本公开的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本公开的方法及其核心思想；同时，对于本领域的一般技术人员，依据本公开的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本公开的限制。

Claims (23)

  1. 一种波束切换方法，其特征在于，由基站执行，所述方法包括：
    在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向所述终端发送第一指示信息，用于指示所述终端对所述第二波束对应的信道进行评估；
    接收所述终端上报的对所述第二波束对应的信道的评估结果；
    根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
  2. 根据权利要求1所述的方法，其特征在于，对所述第二波束对应的信道进行评估的方式包括以下至少之一：
    测量所述第二波束对应的信道的层1接收信号强度指示L1-RSSI；
    对所述第二波束对应的信道进行空闲信道评估CCA或增强空闲信道评估eCCA。
  3. 根据权利要求2所述的方法，其特征在于，对所述第二波束对应的信道进行评估的方式包括测量所述第二波束对应的信道的L1-RSSI，所述方法还包括：
    向所述终端发送专用于L1-RSSI测量的预设非周期触发状态，其中，所述预设非周期触发状态关联有至少一个零功率信道状态信息参考信号ZP-CSI-RS；
    其中，所述向所述终端发送指示信息包括：
    向所述终端发送下行控制信息DCI，所述DCI中携带有所述预设非周期触发状态，用于触发所述终端在所述ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
  4. 根据权利要求3所述的方法，其特征在于，所述DCI包括上行调度DCI；
    其中，所述上行调度DCI还用于指示所述终端通过所述上行调度DCI调度的物理上行共享信道PUSCH上报所述评估结果。
  5. 根据权利要求3所述的方法，其特征在于，所述根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信包括：
    在所述L1-RSSI大于第一阈值的情况下，确定所述第二波束对应的信道被占用，持续使用所述第一波束与所述终端通信；
    在所述L1-RSSI小于第二阈值的情况下，确定所述第二波束对应的信道空闲，切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
  6. 根据权利要求2所述的方法，其特征在于，对所述第二波束对应的信道进行评估的方式包括对所述第二波束对应的信道进行CCA或eCCA，其中，所述向所述终端发送指示信息包括：
    向所述终端发送DCI，所述DCI中携带有专用标识符，用于指示所述终端对所述第二波束对应的信道进行CCA或eCCA。
  7. 根据权利要求6所述的方法，其特征在于，所述DCI包括上行调度DCI和/或下行调度DCI；
    其中，所述上行调度DCI还用于指示所述终端通过所述上行调度DCI调度的PUSCH向上报所述评估结果；
    所述下行调度DCI还用于指示所述终端通过所述下行调度DCI调度的物理下行共享PDSCH对应的混合自动重传请求HARQ对应的物理上行控制信道PUCCH向上报所述评估结果。
  8. 根据权利要求6所述的方法，其特征在于，所述根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信包括：
    在CCA或eCCA的结果为所述第二波束对应的信道被占用的情况下，持续使用所述第一波束与所述终端通信；
    在CCA或eCCA的结果为所述第二波束对应的信道空闲的情况下，切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述第一指示信息还用于指示需要评估信道对应的波束为所述第二波束，和/或所述方法还包括：
    向所述终端发送第二指示信息，用于指示需要评估信道对应的波束为所述第二波束。
  10. 一种评估上报方法，其特征在于，由终端执行，所述方法包括：
    在与基站通过第一波束通信的情况下，接收所述基站发送的第一指示信息，所述第一指示信息用于指示所述终端对第二波束对应的信道进行评估，其中，所述第二波束为所述基站期望切换到的波束；
    对所述第二波束对应的信道进行评估；
    将对所述第二波束对应的信道评估得到的评估结果上报至所述基站。
  11. 根据权利要求10所述的方法，其特征在于，所述将对所述第二波束对应的信道评估得到的评估结果上报至所述基站包括：
    通过所述第一波束将所述评估结果上报至所述基站。
  12. 根据权利要求10所述的方法，其特征在于，对所述第二波束对应的信道进行评估的方式包括以下至少之一：
    测量所述第二波束对应的信道的层1接收信号强度指示L1-RSSI；
    对所述第二波束对应的信道进行空闲信道评估CCA或增强空闲信道评估eCCA。
  13. 根据权利要求12所述的方法，其特征在于，对所述第二波束对应的信道进行评估的方式包括测量所述第二波束对应的信道的L1-RSSI，所述方法还包括：
    接收所述基站发送的专用于L1-RSSI测量的预设非周期触发状态，其中，所述预设非周期触发状态关联有至少一个零功率信道状态信息参考信号ZP-CSI-RS；
    接收所述基站发送的DCI；
    其中，所述对所述第二波束对应的信道进行评估包括：
    在确定所述DCI中携带有所述预设非周期触发状态的情况下，在所述ZP-CSI-RS对应资源上测量所述第二波束对应的信道的L1-RSSI。
  14. 根据权利要求13所述的方法，其特征在于，所述DCI包括上行调度DCI，所述将对所述第二波束对应的信道评估得到的评估结果上报至所述基站包括：
    在所述上行调度DCI调度的PUSCH上报所述评估结果。
  15. 根据权利要求12所述的方法，其特征在于，对所述第二波束对应的信道进行评估的方式包括对所述第二波束对应的信道进行CCA或eCCA，所述方法还包括：
    接收所述基站发送的DCI；
    其中，所述对所述第二波束对应的信道进行评估包括：
    在确定所述DCI中携带有专用标识符的情况下，对所述第二波束对应的信道进行CCA或eCCA。
  16. 根据权利要求15所述的方法，其特征在于，所述DCI包括上行调度DCI和/或下行调度DCI，所述将对所述第二波束对应的信道评估得到的评估结果上报至所述基站包括：
    在所述上行调度DCI调度的PUSCH向上报所述评估结果；和/或
    在所述下行调度DCI调度的PDSCH对应的HARQ对应的物理上行控制信道PUCCH向上报所述评估结果。
  17. 根据权利要求10至16中任一项所述的方法，其特征在于，所述方法还包括：
    根据所述第一指示信息确定需要评估信道对应的波束为所述第二波束，和/或
    根据所述基站发送的第二指示信息确定需要评估信道对应的波束为所述第二波束。
  18. 一种波束切换装置，其特征在于，包括一个或多个处理器，所述处理器被配置为执行：
    在与终端通过第一波束通信的情况下，在需要切换到第二波束时，向所述终端发 送第一指示信息，用于指示所述终端对所述第二波束对应的信道进行评估；
    接收所述终端上报的对所述第二波束对应的信道的评估结果；
    根据所述评估结果确定是否切换到所述第二波束，以通过所述第二波束与所述终端进行通信。
  19. 一种评估上报装置，其特征在于，包括一个或多个处理器，所述处理器被配置为执行：
    在与基站通过第一波束通信的情况下，接收所述基站发送的第一指示信息，所述第一指示信息用于指示所述终端对第二波束对应的信道进行评估，其中，所述第二波束为所述基站期望切换到的波束；
    对所述第二波束对应的信道进行评估；
    将对所述第二波束对应的信道评估得到的评估结果上报至所述基站。
  20. 一种通信装置，其特征在于，包括：
    处理器；
    用于存储计算机程序的存储器；
    其中，当所述计算机程序被处理器执行时，实现权利要求1至8中任一项所述的波束切换方法。
  21. 一种通信装置，其特征在于，包括：
    处理器；
    用于存储计算机程序的存储器；
    其中，当所述计算机程序被处理器执行时，实现权利要求10至17中任一项所述的评估上报方法。
  22. 一种计算机可读存储介质，用于存储计算机程序，其特征在于，当所述计算机程序被处理器执行时，实现权利要求1至8中任一项所述的波束切换方法中的步骤。
  23. 一种计算机可读存储介质，用于存储计算机程序，其特征在于，当所述计算机程序被处理器执行时，实现权利要求10至17中任一项所述的评估上报方法中的步骤。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003298483A (ja) * 2002-03-29 2003-10-17 Fujitsu Ltd 指向性ビーム切替受信機
CN107733473A (zh) * 2016-08-12 2018-02-23 电信科学技术研究院 一种波束管理方法和相关设备
WO2018059128A1 (zh) * 2016-09-30 2018-04-05 中兴通讯股份有限公司 一种波束扫描和切换的方法及装置
WO2020220871A1 (zh) * 2019-04-30 2020-11-05 大唐移动通信设备有限公司 一种波束切换方法和设备
CN113037348A (zh) * 2017-01-26 2021-06-25 华为技术有限公司 一种波束切换方法及相关设备
WO2021147641A1 (zh) * 2020-01-20 2021-07-29 华为技术有限公司 一种调整波束的方法及装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003298483A (ja) * 2002-03-29 2003-10-17 Fujitsu Ltd 指向性ビーム切替受信機
CN107733473A (zh) * 2016-08-12 2018-02-23 电信科学技术研究院 一种波束管理方法和相关设备
WO2018059128A1 (zh) * 2016-09-30 2018-04-05 中兴通讯股份有限公司 一种波束扫描和切换的方法及装置
CN113037348A (zh) * 2017-01-26 2021-06-25 华为技术有限公司 一种波束切换方法及相关设备
WO2020220871A1 (zh) * 2019-04-30 2020-11-05 大唐移动通信设备有限公司 一种波束切换方法和设备
WO2021147641A1 (zh) * 2020-01-20 2021-07-29 华为技术有限公司 一种调整波束的方法及装置

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