WO2022193149A1 - Procédé de détermination de faisceau, dispositif de détermination de faisceau et support de stockage - Google Patents

Procédé de détermination de faisceau, dispositif de détermination de faisceau et support de stockage Download PDF

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Publication number
WO2022193149A1
WO2022193149A1 PCT/CN2021/081159 CN2021081159W WO2022193149A1 WO 2022193149 A1 WO2022193149 A1 WO 2022193149A1 CN 2021081159 W CN2021081159 W CN 2021081159W WO 2022193149 A1 WO2022193149 A1 WO 2022193149A1
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WIPO (PCT)
Prior art keywords
indication signaling
determination method
response
time threshold
report
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PCT/CN2021/081159
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English (en)
Chinese (zh)
Inventor
李明菊
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to CN202180000933.9A priority Critical patent/CN113196854B/zh
Priority to PCT/CN2021/081159 priority patent/WO2022193149A1/fr
Publication of WO2022193149A1 publication Critical patent/WO2022193149A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a beam determination method, a beam determination device, and a storage medium.
  • New Radio for example, when the communication frequency band is in frequency range 2 (FR2), since the high-frequency channel attenuates rapidly, in order to ensure the coverage, it is necessary to use beam-based transmission and reception.
  • FR2 frequency range 2
  • the network device sends beam indication signaling, and the terminal determines the beam used for transmission or reception according to the beam indication signaling.
  • the beam indication signaling includes medium access control (Medium Access Control, MAC) control element (Control Element, CE) signaling and downlink control signaling (Downlink Control Information, DCI).
  • MAC Medium Access Control
  • CE Control Element
  • DCI Downlink Control Information
  • the terminal updates the beam, it needs to determine whether to update the beam according to the beam indication signaling. For example, in order to improve the reliability of DCI, it is necessary to perform Hybrid Automatic Repeat request (HARQ) acknowledgment (ACK) feedback for DCI used for beam indication, which results in a longer beam update delay and signaling overhead. big.
  • HARQ Hybrid Automatic Repeat request
  • ACK acknowledgment
  • the present disclosure provides a beam determination method, a beam determination device and a storage medium.
  • a beam determination method which is applied to a terminal.
  • the beam determination method includes: in response to the terminal reporting a beam report, determining a to-be-used beam based on the beam report.
  • the beam report includes a beam measurement result
  • the to-be-used beam is determined based on the beam measurement result
  • the to-be-used beam is one or more beams selected according to the signal strength corresponding to the beam measurement result.
  • the to-be-used beam in response to the beam report being reported in a non-beam group manner, is a beam with the strongest signal strength selected according to the signal strength corresponding to the beam measurement result.
  • the to-be-used beam in response to the beam group-based method reporting, is a beam group with the strongest signal strength of the beam group selected according to the signal strength corresponding to the beam measurement result.
  • the to-be-used beam in response to the beam reporting method reporting based on a beam group, is a beam with the strongest signal strength selected in one or more beam groups according to the signal strength corresponding to the beam measurement result.
  • using the to-be-used beam for communication includes:
  • the to-be-used beam is used for communication, the first time condition being after a first time threshold after a beam report is reported.
  • the beam determination method further includes: determining that the beam indication signaling is not received before the first time threshold.
  • the beam determination method further includes: in response to receiving the beam indication signaling, using the beam indicated by the beam indication signaling for communication.
  • using the beam indicated by the beam indication signaling to communicate includes: in response to satisfying the second time condition, using the beam indicated by the beam indication signaling to communicate.
  • the meeting the second time condition includes at least one of the following:
  • the downlink control information schedules a designated channel and/or signal, between the time when the downlink control information is received and the time when the designated channel and/or signal is scheduled After the time interval is greater than the fifth time threshold, use the beam indicated by the beam indication signaling to transmit the designated channel and/or signal;
  • the downlink control information schedules a designated channel and/or signal, and the time when the downlink control information is received and the hybrid automatic repeat request feedback time for sending the downlink control information After the time interval between them is greater than the sixth time threshold, use the beam indicated by the beam indication signaling to transmit the HARQ feedback;
  • the downlink control information schedules a designated channel and/or signal, after a seventh time threshold after the HARQ feedback of the downlink control information is sent, using the The beam indicated by the beam indication signaling transmits the designated channel and/or signal, and the hybrid automatic repeat request feedback.
  • the beam determination method further includes: before at least one of the fifth time threshold, the sixth time threshold and the seventh time threshold, using the to-be-used beam to transmit the designation channel and/or signal, and the HARQ feedback.
  • an apparatus for determining a beam including:
  • the sending unit is configured to report the beam report; the processing unit is configured to determine the beam to be used based on the beam report.
  • the beam report includes a beam measurement result
  • the to-be-used beam is determined based on the beam measurement result
  • the to-be-used beam is one or more beams selected according to the signal strength corresponding to the beam measurement result.
  • the to-be-used beam in response to the beam group-based method reporting, is a beam group with the strongest signal strength of the beam group selected according to the signal strength corresponding to the beam measurement result.
  • the sending unit in response to satisfying the beam usage condition, uses the to-be-used beam for communication.
  • the sending unit in response to satisfying a first time condition, communicates using the to-be-used beam, and the first time condition is after a first time threshold after the beam report is reported.
  • the processing unit is further configured to determine that beam indication signaling has not been received before the first time threshold.
  • the receiving the beam indication signaling includes: receiving the beam indication signaling within the first time threshold, and/or decoding the beam indicated by the beam indication signaling within the first time threshold .
  • the sending unit in response to satisfying the second time condition, performs communication using the beam indicated by the beam indication signaling.
  • the hybrid automatic repeat request is sent after the After a fourth time threshold after feedback.
  • using the beam indicated by the beam indication signaling for communication includes at least one of the following:
  • the downlink control information schedules a designated channel and/or signal, and the time when the downlink control information is received and the hybrid automatic repeat request feedback time for sending the downlink control information After the time interval between them is greater than the sixth time threshold, use the beam indicated by the beam indication signaling to transmit the HARQ feedback;
  • the downlink control information schedules a designated channel and/or signal, after a seventh time threshold after the HARQ feedback of the downlink control information is sent, using the The beam indicated by the beam indication signaling transmits at least one of the designated channel and/or signal and the hybrid automatic repeat request feedback.
  • an apparatus for determining a beam including:
  • the processor is configured to: execute the beam determination method described in the first aspect or any implementation manner of the first aspect.
  • a storage medium where instructions are stored in the storage medium, and when the instructions in the storage medium are executed by a processor of a terminal, the terminal can execute the first aspect or the first aspect Aspect the beam determination method described in any one of the embodiments.
  • the technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: in response to the terminal reporting the beam report, determining the beam to be used based on the beam report, and determining the beam to be used after reporting the beam report, thereby reducing signaling of beam indications overhead, and can also reduce the delay of beam determination.
  • Fig. 2 is a flow chart of a beam determination method according to an exemplary embodiment.
  • Fig. 3 is a flow chart of a beam determination method according to an exemplary embodiment.
  • Fig. 6 is a flow chart of a beam determination method according to an exemplary embodiment.
  • Fig. 7 is a flow chart of a beam determination method according to an exemplary embodiment.
  • Fig. 8 is a flow chart of a beam determination method according to an exemplary embodiment.
  • Fig. 11 is a flow chart of a beam determination method according to an exemplary embodiment.
  • Fig. 12 is a schematic time diagram of determining a beam to be used for communication based on beam indication signaling according to an exemplary embodiment.
  • Fig. 13 is a flowchart illustrating a method for determining a beam according to an exemplary embodiment.
  • Fig. 14 is a block diagram of an apparatus for determining a beam according to an exemplary embodiment.
  • Fig. 15 is a block diagram of an apparatus for beam determination according to an exemplary embodiment.
  • the wireless communication system includes a terminal and a network device.
  • the terminal is connected to the network device through wireless resources, and transmits and receives data.
  • the wireless communication system shown in FIG. 1 is only a schematic illustration, and the wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, etc. Not shown in Figure 1.
  • the embodiments of the present disclosure do not limit the number of network devices and the number of terminals included in the wireless communication system.
  • the wireless communication system of the embodiment of the present disclosure is a network that provides a wireless communication function.
  • Wireless communication systems can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA) , frequency division multiple access (frequency division multiple access, FDMA), orthogonal frequency division multiple access (orthogonal frequency-division multiple access, OFDMA), single carrier frequency division multiple access (single Carrier FDMA, SC-FDMA), carrier sense Carrier Sense Multiple Access with Collision Avoidance.
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • single carrier frequency division multiple access single Carrier FDMA, SC-FDMA
  • carrier sense Carrier Sense Multiple Access with Collision Avoidance carrier sense Carrier Sense Multiple Access with Collision Avoidance.
  • the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, 5G network can also be called a new wireless network ( New Radio, NR).
  • 2G International: generation
  • 3G network 4G network or future evolution network, such as 5G network
  • 5G network can also be called a new wireless network ( New Radio, NR).
  • New Radio New Radio
  • the present disclosure will sometimes refer to a wireless communication network simply as a network.
  • the terminal involved in the present disclosure may also be referred to as terminal equipment, user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), etc.
  • a device that provides voice and/or data connectivity may be a handheld device with a wireless connection function, a vehicle-mounted device, or the like.
  • some examples of terminals are: Smartphone (Mobile Phone), Pocket Personal Computer (PPC), PDA, Personal Digital Assistant (PDA), notebook computer, tablet computer, wearable device, or Vehicle equipment, etc.
  • the terminal device may also be an in-vehicle device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.
  • the communication between the network device and the terminal is based on beams.
  • the network device sends beam indication signaling, and the terminal determines the beam used for transmission or reception according to the beam indication signaling.
  • beam indication signaling includes MAC CE and DCI.
  • MAC CE and DCI may be used to schedule designated channels and/or signals for transmission using beams.
  • the MAC CE can be used to indicate the beams of the physical downlink control channel (PDCCH) and the physical uplink control channel (PUCCH).
  • DCI may be used to indicate beams of a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH).
  • beams of various reference signals such as CSI-RS, sounding reference signal (sounding reference signal, SRS), TRS, etc., may also be indicated by MAC CE or DCI.
  • Common beam means that multiple channels or reference signals use the same beam, and use one beam indication signaling to indicate. That is, one beam indication signaling indicates a common beam for various channels or reference signals.
  • general beams can also be indicated by MAC CE or DCI. Since the DCI indicates a general beam, in order to improve the reliability of the DCI, it is necessary to perform Hybrid Automatic Repeat request (HARQ) correct response (ACK) feedback for the DCI used for beam indication, which leads to the determination of the beam to be used. The delay is large, and the signaling overhead is large.
  • HARQ Hybrid Automatic Repeat request
  • the beam to be used in the embodiment of the present disclosure may be an initially used beam determined by the terminal, or may be a beam determined by the terminal for updating.
  • Fig. 2 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 2, the method for determining a beam includes the following steps.
  • step S11 the beam report is reported and the to-be-used beam is determined based on the beam report.
  • the beam report is a beam report generated based on a measurement result obtained by beam measurement.
  • the beam to be used can be determined based on the reported beam report, thereby reducing the signaling overhead of beam indication and reducing the delay of beam determination.
  • the embodiment of the present disclosure does not limit the sequence between the timing of determining the beam to be used and the timing of reporting the beam report.
  • the beam to be used may be determined before, after, or at the same time when the beam report is reported. Because the terminal can determine the beam report after completing the beam measurement, it can determine the beam to be used at this time, and when does the terminal determine the beam to be used, before reporting the beam report or after reporting the beam report, While reporting the beam report, there is no restriction here.
  • the network device may configure a reporting manner of the beam report for the terminal.
  • the reporting manner of the beam report may be a reporting manner based on a beam group (group) or a reporting manner based on a non-beam group (non group).
  • the beam report can be a group-based beam report, a non-group-based beam report, or a non-group-based beam report.
  • the number of beams included in the beam report reported by the terminal may be one or more.
  • the beams in the reported beam report may be multiple beam groups, and each beam group contains at least one beam, that is, Only two beam groups are reported, and each beam group includes one beam, or multiple beam groups can be reported, and each beam group includes multiple beams.
  • the beam determination method in this embodiment of the present disclosure may be performed by a terminal.
  • the terminal performs beam measurement and reports a beam report based on the beam measurement result. Beam measurement results are included in the beam report. Therefore, the beam to be used can be determined based on the measurement results included in the beam report.
  • Fig. 3 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 3, the method for determining a beam includes the following steps.
  • step S21 the beam to be used is determined based on the beam measurement result included in the beam report.
  • the signal strength corresponding to the measurement result may include at least one of the following: Layer 1-Reference Signal Received Power (Layer1-Reference Signal Received
  • L1-RSRP Layer 1 Signal to Interference Noise Ratio
  • Layer1-Signal Interference Noise Ratio Layer1-Signal Interference Noise Ratio
  • L1-RSRQ Layer 1 Reference Signal Received Quality
  • step S31 one or more beams are selected as to-be-used beams according to the signal strength corresponding to the beam measurement result.
  • the network device may configure a reporting manner of the beam report for the terminal.
  • the reporting manner of the beam report may be a reporting manner based on a beam group, or a reporting manner based on a non-beam group.
  • the beam report may be a beam group-based beam report, or a non-beam group-based beam report.
  • the to-be-used beam in response to the beam report being reported in a non-beam group manner, is a beam with the strongest signal strength selected according to the signal strength corresponding to the beam measurement result.
  • Fig. 5 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 5 , the method for determining a beam includes the following steps.
  • step S41 in response to the beam report being reported in a non-beam group manner, according to the signal strength corresponding to the beam measurement result, a beam with the strongest beam signal strength is selected as the to-be-used beam.
  • one or more beams may be determined as the to-be-used beams, and one of the beams is a typical value.
  • the determination of the to-be-used beam may be performed based on the signal strength corresponding to the beam measurement result of the beam group.
  • the beam to be used may be the beam group signal selected according to the signal strength corresponding to the beam measurement result. The beam in the strongest beam group.
  • Fig. 6 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 6 , the method for determining a beam includes the following steps.
  • step S51 in response to the beam group-based method reporting the beam report, according to the signal strength corresponding to the beam measurement result, a beam group with the strongest signal strength of the beam group is selected as the to-be-used beam.
  • the signal strengths corresponding to the beam measurement results of the beam groups are respectively determined for the two beam groups.
  • the signal strength of the beam measurement result of the beam group may be understood as the measurement result corresponding to the beam with the strongest signal strength corresponding to the beam measurement result among the multiple beams included in the beam group.
  • beam group 1 includes beam 1 and beam 2, and beam 1 has a stronger signal strength than beam 2;
  • beam group 2 includes beam 3 and beam 4, and beam 3 has a stronger signal strength than beam 4.
  • the beam measurement result of beam group 1 is the signal strength of beam 1
  • the beam measurement result of beam group 2 is the signal strength of beam 3.
  • beam group 1 is selected as the beam group to be used, that is, beam 1 and beam 2 are selected as beams to be used.
  • it may be the average value of the signal strengths corresponding to the beam measurement results of the multiple beams included in the beam group.
  • beam group 1 includes beam 1 and beam 2; beam group 2 includes beam 3 and beam 4.
  • the beam measurement result of beam group 1 is the average value of the signal strength of beam 1 and the signal strength of beam 2, which is recorded as average value 1
  • the beam measurement result of beam group 2 is the average value of the signal strength of beam 3 and the signal strength of beam 4. Values are recorded as mean 2.
  • the beam group 1 is selected as the to-be-used beam group, that is, the beam 1 and the beam 2 are selected as the to-be-used beams.
  • the beam to be used may be the signal strength corresponding to the beam measurement result. The beam with the strongest signal strength is selected in the beam group.
  • Fig. 7 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 7 , the method for determining a beam includes the following steps.
  • beam group 1 includes beam 1 and beam 2, and beam 1 has a stronger signal strength than beam 2; beam group 2 includes beam 3 and beam 4, and beam 3 has a stronger signal strength than beam 4. Then beam 1 and/or beam 3 are selected as the beams to be used.
  • the beam to be used can be determined after the beam report is reported, thereby reducing the signaling overhead of beam indication and reducing the delay of beam determination.
  • Fig. 8 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 8, the method for determining a beam includes the following steps.
  • step S71 in response to satisfying the beam usage condition, communication is performed using the beam to be used.
  • the beam usage condition may be a time condition set based on time.
  • Fig. 9 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 9 , the method for determining a beam includes the following steps.
  • the terminal when the terminal uses the to-be-used beam determined based on the beam report for communication, it may be implemented without receiving the beam indication signaling. That is, in the embodiment of the present disclosure, before the beam uses the to-be-used beam determined based on the beam report for communication, it is determined that the beam indication signaling is not received before the first time threshold. That is, if the beam indication signaling that can be used to indicate a new beam is not received within the first time threshold, the terminal uses the beam to be used determined based on the beam report to communicate after it is greater than or equal to the first time threshold.
  • Fig. 11 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 11 , the method for determining a beam includes the following steps.
  • step S91 in response to receiving the beam indication signaling, communication is performed using the beam indicated by the beam indication signaling.
  • the time when the terminal involved in the embodiment of the present disclosure receives the beam indication signaling for indicating the beam within the first time threshold may be, on the one hand, receiving the beam indication signaling within the first time threshold. and/or the time at which the beam indicated by the beam indication signaling is decoded within the first time threshold.
  • the network device may send beam indication signaling to the terminal , the beam that the terminal can use is indicated by the beam indication signaling.
  • the terminal receives the beam indication signaling sent by the network device, and communicates based on the beam indicated by the beam indication signaling.
  • This method can be understood as an optimized method of determining beams based on reporting reports in the embodiments of the present disclosure, that is, the method of indicating beams based on beam indication signaling replaces the method of determining beams according to beam reports.
  • the timing of the first time threshold may be stopped, that is, after the end of the first time threshold, the new signal determined based on the beam report may not be used. Instead, the beams indicated by the beam indication signaling are used for communication.
  • Fig. 12 is a schematic time diagram of determining a beam to be used for communication based on beam indication signaling according to an exemplary embodiment.
  • the terminal sends a beam report at time t0, the first time threshold is set to t1, and the time when the terminal receives the beam indication signaling such as MAC CE or DCI is t2.
  • t2 is less than t1, in this case, the terminal can stop timing the first time threshold after time t2, but use the beam designation signal according to the beam designation signaling such as MAC CE or DCI received at time t2. to communicate with the indicated beam.
  • Fig. 13 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 13 , the method for determining a beam includes the following steps.
  • the second time condition may be determined based on beam indication signaling.
  • the second time condition for communicating using the beam indicated by the beam indication signaling may be determined based on the time rule of the beam indication signaling.
  • the communication using the beam indicated by the beam indication signaling may be at least one of the following manners:
  • Manner 1 In response to the beam indication signaling including the MAC CE, after receiving the second time threshold after the MAC CE, use the beam indicated by the beam indication signaling to communicate.
  • Mode 3 In response to the beam indication signaling including DCI and the terminal sending the HARQ ACK for the DCI, after a fourth time threshold after the HARQ ACK is sent, the beam indicated by the beam indication signaling is used for communication.
  • the beam indication signaling is DCI
  • the DCI schedules a designated channel and/or signal at least one of the following methods may be used to determine the beam indication signaling based on the time rule of the beam indication signaling. Communication is performed using the beam indicated by the beam indication signaling.
  • Manner 4 In response to the beam indication signaling including DCI and the DCI scheduling the designated channel and/or signal, after the time interval between the time when the DCI is received and the time when the designated channel and/or signal is scheduled is greater than the fifth time threshold , using the beam indicated by the beam indication signaling to transmit the designated channel and/or signal.
  • the designated channel and/or signal may be PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc., for example.
  • the time interval between the DCI and the PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc. scheduled by the DCI is greater than the fifth time threshold, then the PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc. scheduled by the DCI can be Communicate using the new beam indicated by the DCI.
  • the transmission designation of the to-be-used beam determined based on the beam report may be used. channel and/or signal, and HARQ ACK.
  • using a beam to transmit a certain channel or signal refers to using the QCL parameter indicated by the TCI state corresponding to the beam to transmit a certain channel or signal.
  • the various time thresholds involved in the above may be determined in at least one of the following manners:
  • the network device After the terminal reports based on the capability, the network device will indicate again.
  • the to-be-used beam determined in the beam determination method provided by the embodiment of the present disclosure may be applicable to all communication transmissions, or applicable for certain communication transmissions.
  • some specific PDCCHs may use the beams determined based on the beam report for communication, while other communication transmission beams still use the beams indicated by the beam indication signaling for communication.
  • the beam determination method provided by the present disclosure can be understood as a beam determination method using beam-free indication signaling. After reporting the beam report, the terminal determines a new beam based on the beam measurement result indicated by the beam report, and when certain conditions are met. Starting to use a new beam reduces the signaling overhead of beam indication and reduces the delay in beam determination.
  • an embodiment of the present disclosure also provides an apparatus for determining a beam.
  • the beam determination apparatus includes corresponding hardware structures and/or software modules for executing each function.
  • the embodiments of the present disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.
  • Fig. 14 is a block diagram of an apparatus for determining a beam according to an exemplary embodiment.
  • the beam determination apparatus 100 includes a sending unit 101 and a processing unit 102 .
  • the sending unit 101 is configured to report the beam report.
  • the processing unit 102 is configured to determine the to-be-used beam based on the beam report.
  • the beam report includes beam measurement results, and the to-be-used beam is determined based on the beam measurement results.
  • the beam to be used is one or more beams selected according to the signal strength corresponding to the beam measurement result.
  • the to-be-used beam in response to the beam report being reported in a non-beam group manner, is a beam with the strongest signal strength selected according to the signal strength corresponding to the beam measurement result.
  • the to-be-used beam in response to the beam group-based method reporting, is a beam group with the strongest signal strength of the beam group selected according to the signal strength corresponding to the beam measurement result.
  • the beam to be used in response to the beam group-based method reporting, is the beam with the strongest signal strength selected from one or more beam groups according to the signal strength corresponding to the beam measurement result.
  • the sending unit 101 in response to the beam usage condition being satisfied, uses the to-be-used beam for communication.
  • the sending unit 101 in response to satisfying the first time condition, uses the beam to be used for communication, and the first time condition is after the first time threshold after the beam report is reported.
  • the processing unit 102 is further configured to determine that the beam indication signaling has not been received before the first time threshold.
  • the beam determination apparatus 100 further includes a receiving unit 103, and the receiving unit 103 is configured to receive beam indication signaling. In response to the receiving unit 103 receiving the beam indication signaling, the transmitting unit 101 communicates using the beam indicated by the beam indication signaling.
  • the beam indication signaling including the MAC CE In response to the beam indication signaling including the MAC CE, after a second time threshold after the MAC CE is received. In response to beam indication signaling including DCI, after a third time threshold after DCI is received. In response to the beam indication signaling including DCI and the terminal sending HARQ ACK feedback for the DCI, after a fourth time threshold after sending the HARQ ACK feedback.
  • the communication using the beam indicated by the beam indication signaling includes at least one of the following:
  • the beam In response to the beam indication signaling including DCI, and the DCI schedules the designated channel and/or signal, the beam is used after the time interval between the time the DCI is received and the time the designated channel and/or signal is scheduled is greater than a fifth time threshold
  • the beam indicated by the signaling signaling transmits a designated channel and/or signal.
  • the DCI schedules the designated channel and/or signal, and the time interval between the time when the DCI is received and the time when the HARQ ACK feedback of the DCI is sent is greater than the sixth time threshold, the beam indication signaling is used
  • the indicated beam transmits HARQ ACK feedback.
  • the sending unit 101 transmits the designated channel and/or signal using the beam to be used, and the HARQ ACK feedback.
  • Fig. 15 is a block diagram of an apparatus for beam determination according to an exemplary embodiment.
  • apparatus 200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.
  • apparatus 200 may include one or more of the following components: processing component 202, memory 204, power component 206, multimedia component 208, audio component 210, input/output (I/O) interface 212, sensor component 214, and Communication component 216 .
  • the processing component 202 generally controls the overall operation of the device 200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 202 may include one or more processors 220 to execute instructions to perform all or some of the steps of the methods described above.
  • processing component 202 may include one or more modules that facilitate interaction between processing component 202 and other components.
  • processing component 202 may include a multimedia module to facilitate interaction between multimedia component 208 and processing component 202.
  • Memory 204 is configured to store various types of data to support operation at device 200 . Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and the like. Memory 204 may be implemented by any type of volatile or non-volatile storage device or combination thereof, 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
  • Power components 206 provide power to various components of device 200 .
  • Power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to device 200 .
  • the multimedia component 208 includes a screen that provides an output interface between the device 200 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 touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect the duration and pressure associated with the touch or swipe action.
  • the multimedia component 208 includes a front-facing camera and/or a rear-facing camera. When the apparatus 200 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.
  • the I/O interface 212 provides an interface between the processing component 202 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.
  • Sensor assembly 214 includes one or more sensors for providing status assessments of various aspects of device 200 .
  • the sensor assembly 214 can detect the open/closed state of the device 200, the relative positioning of components, such as the display and keypad of the device 200, and the sensor assembly 214 can also detect a change in the position of the device 200 or a component of the device 200 , the presence or absence of user contact with the device 200 , the orientation or acceleration/deceleration of the device 200 and the temperature change of the device 200 .
  • Sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • apparatus 200 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component implementation is used to perform the above method.
  • non-transitory computer-readable storage medium including instructions, such as a memory 204 including instructions, executable by the processor 220 of the apparatus 200 to perform the method described above.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • first”, second, etc. are used to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish the same type of information from one another, and do not imply a particular order or level of importance. In fact, the expressions “first”, “second” etc. are used completely interchangeably.
  • a first time condition may also be referred to as a second time condition
  • a second time condition may also be referred to as a first time condition

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Abstract

La présente divulgation se rapporte à un procédé de détermination de faisceau, à un dispositif de détermination de faisceau et à un support de stockage. Le procédé de détermination de faisceau consiste : en réponse à un terminal signalant une signalisation de faisceau, à déterminer, sur la base de la signalisation de faisceau, un faisceau à utiliser. Au moyen de la présente divulgation, le faisceau à utiliser peut être déterminé sur la base de la signalisation de faisceau, ce qui permet de réduire le retard de détermination de faisceau et de réduire le surdébit de signalisation.
PCT/CN2021/081159 2021-03-16 2021-03-16 Procédé de détermination de faisceau, dispositif de détermination de faisceau et support de stockage Ceased WO2022193149A1 (fr)

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PCT/CN2021/081159 WO2022193149A1 (fr) 2021-03-16 2021-03-16 Procédé de détermination de faisceau, dispositif de détermination de faisceau et support de stockage

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