WO2020221092A1 - 电子装置、无线通信方法和计算机可读介质 - Google Patents

电子装置、无线通信方法和计算机可读介质 Download PDF

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Publication number
WO2020221092A1
WO2020221092A1 PCT/CN2020/086336 CN2020086336W WO2020221092A1 WO 2020221092 A1 WO2020221092 A1 WO 2020221092A1 CN 2020086336 W CN2020086336 W CN 2020086336W WO 2020221092 A1 WO2020221092 A1 WO 2020221092A1
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Prior art keywords
information
base station
time
beam switching
electronic device
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PCT/CN2020/086336
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English (en)
French (fr)
Inventor
刘敏
孙晨
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索尼公司
刘敏
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Application filed by 索尼公司, 刘敏 filed Critical 索尼公司
Priority to JP2021564633A priority Critical patent/JP7487743B2/ja
Priority to US17/598,304 priority patent/US20220182913A1/en
Priority to CN202080030371.8A priority patent/CN113875168B/zh
Priority to EP20798365.1A priority patent/EP3965315A4/en
Publication of WO2020221092A1 publication Critical patent/WO2020221092A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • 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
    • 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 signaling, i.e. of overhead other than pilot signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/249—Reselection being triggered by specific parameters according to timing information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/326—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by proximity to another entity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the present disclosure generally relates to the field of wireless communication, and more specifically, to electronic devices, wireless communication methods, and computer-readable media for non-terrestrial networks (NTN) communication.
  • NTN non-terrestrial networks
  • 3GPP (Third Generation Partnership Project) has proposed satellite communications as an option in scenarios such as aircraft communications, maritime ships, and backhauls in remote areas, and it is recommended to make full use of satellite capabilities.
  • the service beam of the satellite base station needs to be continuously adjusted according to the movement of the satellite to ensure user coverage, that is, the movement of the satellite will cause the base station and the user side beam switching.
  • the beam providing service to the user is SSB#1
  • the beam providing service to the user becomes SSB#2 due to the movement of the satellite.
  • SSB#1 and SSB#2 belong to the same cell, that is, they are generated by the same satellite (low earth orbit satellite LEO#1 in Fig. 5).
  • the beam may need to be adjusted due to the movement of the user equipment. For example, when a geosynchronous orbit (GEO) satellite provides services to users on an airplane, GEO needs to switch beams to ensure coverage due to the movement of the airplane.
  • GEO geosynchronous orbit
  • an electronic device for wireless communication which includes a processing circuit.
  • the processing circuit is configured to: perform control to send information about the beam switching of the base station to the user equipment through beam-based non-terrestrial network communication; determine the time or space position of the beam switching; and perform control to arrive at the determined time or space Perform beam switching when in position.
  • a wireless communication method includes: transmitting information about beam switching of a base station to a user equipment through beam-based non-terrestrial network communication; determining the time or space position of the beam switching; and at the determined time or Perform beam switching at spatial location.
  • an electronic device for wireless communication which includes a processing circuit.
  • the processing circuit is configured to: perform control to receive information about the beam switching of the base station from the base station through beam-based non-terrestrial network communication; determine the time position of the beam switching of the user equipment; and perform control to perform the user at the determined time position Beam switching of the device.
  • a wireless communication method includes: receiving information about beam switching of a base station from a base station through beam-based non-terrestrial network communication; determining a time position of beam switching of a user equipment; and performing at the determined time position Beam switching of user equipment.
  • the embodiment of the present invention also includes a computer-readable medium, which includes executable instructions, and when the executable instructions are executed by an information processing device, the information processing device executes the method according to the foregoing embodiment.
  • the base station and the user equipment can realize correct beam switching, and the misalignment of the base station beam and the user equipment beam caused by the inconsistency of the beam switching time of the base station and the user equipment can avoid link failure.
  • FIG. 1 is a block diagram showing a configuration example of an electronic device for wireless communication according to an embodiment of the present invention
  • FIG. 2 is a flowchart showing a process example of a wireless communication method according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing a configuration example of an electronic device for wireless communication according to another embodiment of the present invention.
  • FIG. 4 is a flowchart showing a process example of a wireless communication method according to another embodiment of the present invention.
  • 5 and 6 are schematic diagrams showing example situations of beam switching caused by satellite movement
  • 7 to 13 are schematic diagrams for explaining examples of the timing configuration of the beam switching on the base station and the user equipment side;
  • FIG. 14 is a block diagram showing an exemplary structure of a computer implementing the method and device of the present disclosure
  • 15 is a block diagram showing an example of a schematic configuration of a smart phone to which the technology of the present disclosure can be applied.
  • FIG. 16 is a block diagram showing an example of a schematic configuration of a gNB (base station) to which the technology of the present disclosure can be applied.
  • the electronic device 100 for wireless communication includes a processing circuit 110.
  • the processing circuit 110 may be implemented as a specific chip, a chipset, or a central processing unit (CPU), for example.
  • the processing circuit 110 includes a first control unit 111, a determination unit 113, and a second control unit 115. It should be pointed out that although the first control unit 111, the determination unit 113 and the second control unit 115 are shown in the form of functional blocks in the drawings, it should be understood that the functions of each unit can also be implemented by the processing circuit as a whole. It is not necessarily achieved by processing discrete actual components in the circuit. In addition, although the processing circuit is shown as a block in the figure, the electronic device may include multiple processing circuits, and the functions of each unit may be distributed to multiple processing circuits, so that the multiple processing circuits perform these functions in cooperation. .
  • the service beam of the satellite base station needs to be adjusted according to the movement of the satellite or UE to ensure coverage of the UE, that is, the movement of the satellite or UE will This leads to beam switching on the base station and the UE side.
  • the electronic device according to this embodiment can be implemented on the base station (satellite) side.
  • the first control unit 111 is configured to perform control to transmit information about beam switching of the base station to the UE through beam-based NTN communication.
  • channels or signals related to beam switching may include, for example, physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH) , Channel State Information Interference Measurement (CSI-IM) or Channel State Information Reference Signal (CSI-RS) and Sounding Reference Signal (SRS).
  • PDCCH and PDSCH are taken as examples for brief description.
  • For PDCCH first configure multiple transmission configuration indication (TCI) states for the core set (Coreset) through Radio Resource Control (RRC), and then activate/indicate one of the TCI states through the Media Access Control Control Unit (MAC CE), UE The beam switching is performed 3 ms after the hybrid automatic repeat acknowledgement (HARQ-ACK) containing the beam switching information of the PDCCH is fed back.
  • TCI transmission configuration indication
  • RRC Radio Resource Control
  • MAC CE Media Access Control Unit
  • HARQ-ACK hybrid automatic repeat acknowledgement
  • the activation of the beam indicated by this part of the TCI state is the HARQ-ACK that contains the PDSCH beam activation information fed back by the UE It is completed after 3ms, and finally one of the TCI states is indicated through the downlink control information (DCI).
  • DCI downlink control information
  • the beam switching in the terrestrial network is determined based on the time when the UE feedbacks the HARQ-ACK.
  • the HARQ-ACK mechanism in the traditional terrestrial network and the beam switching timing determined based on the time when the UE feedbacks the HARQ-ACK are not applicable to the non-terrestrial network.
  • the embodiments of the present disclosure provide solutions for beam switching of non-terrestrial networks.
  • the timing of the semi-static resource configuration in the terrestrial network is also determined based on the HARQ-ACK time.
  • the semi-static resource configuration includes, for example, activation/deactivation of one or more of the following: semi-static zero power channel state information reference Signal (semi-persistent ZP-CSI-RS), semi-static non-zero power channel state information reference signal (semi-persistent CSI-RS), semi-static channel state information interference measurement (semi-persistent CSI-IM), semi-static channel Status information reporting (semi-persistent CSI reporting), semi-static sounding reference signal (semi-persistent SRS).
  • semi-static zero power channel state information reference Signal (semi-persistent ZP-CSI-RS), semi-static non-zero power channel state information reference signal (semi-persistent CSI-RS), semi-static channel state information interference measurement (semi-persistent CSI-IM), semi-static channel Status information reporting (s
  • CSI-RS resource sets multiple channel state information reference signal resource sets (CSI-RS resource sets) for the user equipment through the radio resource control (RRC), and then use the media access control control unit (MAC CE) activates one of the CSI-RS resource sets.
  • RRC radio resource control
  • MAC CE media access control control unit
  • the UE feeds back an ACK for the PDSCH containing activation information in slot n
  • the UE considers that the activation of the CSI-RS semi-static resource is applied after slot n+3ms, where 3ms can also be replaced by the number of slots, for example, Time slots, where N represents the number of slots contained in each subframe (subframe) under the subcarrier interval (SCS) indicated by ⁇ .
  • N represents the number of slots contained in each subframe (subframe) under the subcarrier interval (SCS) indicated by ⁇ .
  • the HARQ-ACK mechanism in the traditional terrestrial network and the semi-static resource activation determined based on the time the UE feedbacks the HARQ-ACK (for example, the above slot n) (similar to the deactivation situation) Timing does not apply to non-terrestrial networks.
  • the embodiments of the present disclosure can also be applied to activation/deactivation of semi-static resources.
  • the beam switching and the activation/deactivation of semi-static resources described above are only examples, and the embodiments of the present disclosure can be applied to other scenarios, such as beam deactivation (beam indication through MAC CE). More generally, the embodiments of the present disclosure can be applied to any occasion where the HARQ feedback mechanism is not applicable due to time delay and/or the communication configuration operation performed based on the HARQ feedback mechanism is not applicable, and is not limited to the specific examples given in this embodiment.
  • the first control unit 111 may be configured to perform control to transmit information about the communication configuration operation of the base station to the user equipment through beam-based non-terrestrial network communication.
  • the communication configuration operations here include but are not limited to beam switching, beam activation/deactivation, semi-static resource activation/deactivation, and so on.
  • time position mentioned here not only includes the time value expressed in time units such as hours, minutes, seconds, or milliseconds, but also includes the slot number used in the synchronization state of the base station and the user equipment.
  • time value represented by the system time position such as the system frame number (system frame number).
  • various durations mentioned in this article include not only the duration expressed in various time units such as hours, minutes, seconds, or milliseconds, but also the duration expressed in the number of time slots.
  • the time position, absolute time position, time value, and absolute time value mentioned in the following detailed description also have the same situation, which will not be repeated in the following text.
  • the first control unit 111 may be configured to indicate the beam to which the base station is to be switched or the beam to which the user equipment is to be switched through the indication information on the spatial colocation relationship in the PDCCH or PDSCH. That is to say, the information about the beam switching of the base station sent by the base station to the UE may include the beam that indicates the base station to switch to, and may also include the beam that indicates the UE to switch to (because the beam to which the UE is to switch is different from the beam to which the base station is to switch to The beams correspond to each other, so the beam to be switched to by the UE can also be regarded as information about the beam switching of the base station).
  • the base station can indicate the beam to which the base station is to switch through the TCI status in the PDCCH or PDSCH.
  • the base station can notify the UE of the downlink beam, and the UE performs corresponding uplink beam switching according to the measured uplink and downlink beam pairing results.
  • the base station may indicate the beam to which the UE is to be switched by using spatial relation information in the PDCCH or PDSCH.
  • the determining unit 113 is configured to determine the time position or the space position of the beam switching of the base station.
  • the second control unit 115 is configured to perform control to perform beam switching of the base station when the time position or the space position determined by the determination unit 113 is reached.
  • HARQ assumptions may include the case where there is no HARQ mechanism or the HARQ-ACK feedback mechanism (for example, only NACK feedback) in the NTN system and the case where there is a HARQ-ACK mechanism in the NTN system.
  • the embodiments for the cases without HARQ mechanism (or without HARQ-ACK feedback mechanism) and HARQ-ACK mechanism are respectively explained.
  • the information controlled by the first control unit 111 to send to the UE may include the beam to which the base station is to be switched and the time or space position determined by the determination unit 113.
  • the base station can send the activated beam information and absolute time information or satellite geographic location information to indicate when the UE performs beam switching.
  • This solution can be used when there is no HARQ mechanism or no HARQ-ACK feedback mechanism in the NTN system.
  • the UE will not feedback beam switching information (for example, MAC CE information used in the terrestrial network: TCI activation) whether the PDSCH on which the PDSCH is correctly received.
  • it can be bundled through a similar transmission time interval (TTI). bundling) to improve system reliability.
  • TTI transmission time interval
  • the base station may send the information of the activated beam and the absolute time information to indicate when the UE performs the beam switching.
  • the base station adds the absolute time value for the UE to perform beam switching in the MAC CE, such as T1.
  • the UE switches the UE side beam to the TCI at time T1.
  • the absolute time value can be a time value including hours, minutes, seconds, and milliseconds, or a time value that only includes a part of the above-mentioned time unit, for example, a time value that only includes seconds and milliseconds.
  • the absolute time value may also be the serial number value of the time slot. As shown in Figure 7, the base station and the UE perform beam switching at absolute time T1.
  • Fig. 8 shows another example of beam switching based on absolute time information.
  • the base station adds the absolute time value T0 for sending the beam switching information to the MAC CE.
  • the time T0 may be implicit, such as represented by the slot number of the PDSCH carrying the MAC CE.
  • the UE will perform beam switching after a predetermined period of time after T0, for example X ms or x slots. As shown in Figure 8, the base station and the UE perform beam switching at a predetermined time after the absolute time T0.
  • the value of X ms or x slots is not limited to a predefined value, but can also be explicitly configured, such as one of the following: directly indicated in DCI or RRC or MAC CE; through a combination of multiple signaling Mode indication; indication by accumulating the indication value in DCI or RRC or MAC CE on an existing reference value such as common TA.
  • the value of X ms or x slots may also be calculated based on the distance between the satellite and the user.
  • the base station may instruct the UE when to perform beam switching by sending activated beam information and satellite geographic location information.
  • the base station can add the satellite geographic location value of the UE for beam switching in the MAC CE, such as position 1.
  • the UE will switch the UE side beam to the TCI according to the received TCI#1 and position 1 when the satellite runs to position 1. #1 corresponding beam.
  • the user can judge the position of the satellite according to the satellite ephemeris/trajectory chart broadcast by the base station.
  • the first control unit 111 may also be configured to control to broadcast Information about the satellite ephemeris or satellite trajectory map, so that the UE can determine the time position of the beam switching by the base station according to the spatial position of the satellite ephemeris or satellite trajectory map to perform beam switching on the UE side simultaneously.
  • the base station sends absolute time (or geographic location) information to the UE to achieve simultaneous beam switching between the base station and the UE.
  • the determining unit 113 may be configured to determine the time position of the beam switching, which is determined as the first time position after the first time period has elapsed since the base station sends the information to the UE.
  • the information sent by the first control unit 111 to the UE may include the beam to be switched to by the base station and the second duration, for the UE to perform the beam of the UE at the second time position after the second duration has elapsed since receiving the information. Switch.
  • the second duration can be configured explicitly, such as one of the following: directly indicated in DCI or RRC or MAC CE; indicated by a combination of multiple signaling methods; by specifying an existing reference value such as common
  • the indication value in DCI or RRC or MAC CE is accumulated on TA for indication.
  • the second duration can be a certain predefined value, which is commonly known by the base station and the UE, such as 16 slots, 10 milliseconds, etc.; the second duration can be calculated based on a certain algorithm, such as satellite and The distance between users is calculated.
  • the second control unit 115 may also be configured to perform control to simultaneously use both the switching source beam and the switching target beam to perform communication with the UE in at least a part of the time period between the transmission of information and the beam switching of the base station.
  • the above-mentioned first duration and second duration may also be appropriately set in consideration of the distance between the base station and the UE, so that the second time position is later than the first time position.
  • the base station sends the activated beam information to the UE and agrees that the UE performs beam switching after receiving X ms or x time slots of the beam activation information, and restricts the behavior of the base station, that is, use the new beam at the same time during the guard interval.
  • the beam and the old beam transmit information, thereby further reducing the possibility of link failure.
  • the base station sends the PDSCH containing the activated beam information at time T1, and the base station starts to simultaneously use the original service beam and the new beam to be switched to to provide services to users at time T1+Z.
  • the content of beam transmission is the same.
  • the user receives the PDSCH containing the activated beam information at T2, and the user performs beam switching at T2+X.
  • the base station only uses the new beam to provide services to users after time T1+Y.
  • Figure 9 shows that the base station transmits the PDSCH containing the activated beam information in slot n (equivalent to time T1), and the user receives the PDSCH containing the activated beam information in slot n.
  • the activation information of this beam is applied at slot n+m (equivalent to time T2+X), that is, beam switching is performed.
  • slot n+k (equivalent to time T1+Y)
  • the base station After slot n+k (equivalent to time T1+Y), the base station only uses the new beam to provide services to users.
  • Z in the above example may be equal to 0, that is, both the handover source beam and the handover target beam can be used to communicate with the UE in the entire period from the sending of information to the beam switching of the base station.
  • X in the above example may be set according to the time when the user demodulates the control information and the time when the beam switching is performed.
  • the above-mentioned time is set such that T1+Y>T2+X.
  • the base station and UE can achieve correct beam switching, avoiding the base station beam and UE caused by the inconsistency of the base station and UE beam switching time. Misalignment of beams.
  • the first control unit 111 is further configured to perform control to receive feedback from the UE on the information regarding the beam switching of the base station.
  • the determining unit 113 is configured to determine the time position of the beam switching of the base station based on the sending time of the feedback.
  • the aforementioned feedback of the UE may include HARQ-ACK for PDSCH.
  • the UE can feed back whether the PDSCH where the beam switching information (for example, MAC CE information: TCI activation) is located is received correctly. If the UE reports HARQ-ACK at timeslot n, the UE can perform beam switching at timeslot n+X.
  • the beam switching information for example, MAC CE information: TCI activation
  • the UE is configured with multiple TCI states and can use MAC CE to activate one TCI state.
  • the base station sends PDSCH, which carries the MAC CE used to activate a TCI state.
  • the UE receives and demodulates the PDSCH. If the PDSCH is successfully demodulated, the UE feeds back an ACK to the base station, and if the PDSCH is not successfully demodulated, the UE feeds back a NACK to the base station.
  • the UE may change its beam X ms after the time slot in which the HARQ-ACK information for the PDSCH is transmitted, and if the UE feeds back NACK, the UE does not change its beam.
  • the base station may change its beam within a period of X ms after the time slot from which the PDSCH is transmitted to when the UE transmits HARQ-ACK information for the PDSCH. For example, the base station may estimate the time for the UE to send the HARQ-ACK based on the HARQ-ACK reception time and the distance between the base station and the UE. In addition, in order to further reduce the possibility of link failure, the base station can adopt the method of simultaneously using the new beam and the old beam to transmit information during the guard time interval as described above.
  • the value of X in the above example may be determined by the distance between the UE and the satellite base station.
  • X in a low earth orbit (LEO) scenario, X may be 10 ms, and in a geosynchronous orbit (GEO) scenario, X may be 300 ms.
  • LEO low earth orbit
  • GEO geosynchronous orbit
  • the value of X is not limited to the above example, but can be calculated by estimating the distance between the satellite base station and the UE.
  • the information sent to the UE may also include the distance between the base station and the UE.
  • X, X1, and X2 may be time values or time reference values.
  • the time delay X can be determined by referring to the following table.
  • the distance between the base station and the UE may also be determined by the UE. For example, if the UE has a global navigation satellite system (GNSS) function, it can calculate the distance between the satellite and the UE. In addition, the UE may also report the calculated distance or the location of the UE to the base station.
  • GNSS global navigation satellite system
  • an appropriate time interval can be adopted according to the large delay characteristics in the NTN network, so that the base station and the UE can achieve correct beam switching, avoiding the problem of the base station and the UE.
  • the misalignment of the base station beam and the UE beam caused by the inconsistent UE beam switching time leads to link failure.
  • a joint HARQ method may be adopted, that is, the results of multiple PDSCHs are reported at the same time.
  • the method of indicating absolute time or space position described above can be used to perform beam switching between the base station and the UE side.
  • the base station may separately configure the HARQ process for the PDSCH containing the beam switching information, instead of performing joint reporting with other PDSCHs.
  • the first control unit 111 may be configured to perform a separate HARQ process for the PDSCH carrying information related to the beam switching of the base station.
  • the waiting and processing delay caused by the joint HARQ can be avoided in the presence of HARQ for the PDSCH containing the beam switching information, which delays the time for beam switching.
  • HARQ may be dynamically or semi-statically enabled or disabled (enable/disable), that is, through dynamic or semi-static signaling. Indicate whether the UE performs HARQ feedback.
  • the method of indicating absolute time or space position described above can be used to perform beam switching between the base station and the UE side.
  • the base station may always configure the active HARQ for the PDSCH containing the beam switching information.
  • the first control unit 111 may be configured to set the HARQ process used by the PDSCH carrying information related to the beam switching of the base station to an active state.
  • the scheme for determining the timing of beam switching proposed on the basis of NTN is described above.
  • the timing of beam switching in the traditional scheme is designed based on HARQ.
  • the HARQ mechanism in the non-terrestrial network will be different from the HARQ mechanism in the traditional scheme.
  • the present invention designs a variety of timing schemes for beam switching of non-terrestrial networks.
  • the base station can send the activated beam information and absolute time information to instruct the UE when to perform beam switching; the base station can send the activated beam information, And restrict the base station behavior (use the new beam and the old beam to transmit information at the same time in the guard time interval), and agree that the UE will perform beam switching after X ms of the beam activation information; or send the activated beam information and satellite geographic location information through the base station
  • the method indicates when the UE performs beam switching.
  • the timing design of beam switching can be based on HARQ-ACK, that is, it is agreed that the UE will perform beam switching X'ms after sending the HARQ-ACK for the PDSCH containing the beam activation information
  • a separate specific HARQ process can be used for the PDSCH carrying beam switching information, or the HARQ process of the PDSCH carrying beam switching information can always be enabled or activated.
  • the wireless communication method includes a step S210 of sending information about beam switching of the base station to the UE through beam-based NTN communication.
  • the method further includes step S220 of determining the time or space position of beam switching, and step S230 of performing beam switching when the determined time or space position is reached.
  • the device and method described above correspond to the base station side.
  • the corresponding processing on the UE side is also involved.
  • the electronic device 300 for wireless communication includes a processing circuit 310.
  • the processing circuit 310 includes a first control unit 311, a determination unit 313, and a second control unit 315.
  • the first control unit 311 is configured to perform control to receive information about beam switching of the base station from the base station through beam-based NTN communication.
  • the information received from the base station may include the beam to which the base station is to be switched and the time or space position of the base station's beam switching.
  • the determining unit 313 is configured to determine the time position of the beam switching of the UE.
  • the second control unit 315 is configured to perform control to perform beam switching of the UE at the determined time position.
  • the information received from the base station may include the beam to be switched to by the base station and the time position of the base station's beam switching, and the determining unit 313 may determine the time position of the base station's beam switching as the UE's time position of beam switching.
  • the information received from the base station may include the beam to which the base station is to be switched and the duration, and the determining unit 313 may determine the time position after the time period has elapsed from receiving the information as the time position of the beam switching of the UE .
  • the information received from the base station may include the beam to which the base station is to be switched, the spatial position of the base station's beam switching, and information about satellite ephemeris or satellite trajectory diagrams, and the determining unit 313 may determine the UE's information based on the information received from the base station.
  • the time position of beam switching may include the beam to which the base station is to be switched, the spatial position of the base station's beam switching, and information about satellite ephemeris or satellite trajectory diagrams.
  • the first control unit 311 may be further configured to control to send feedback of information to the base station, and the determining unit 313 may determine the beam switching of the UE based on the sending time of the feedback and the distance between the UE and the base station. Time location.
  • the distance may be determined by the UE or indicated by the base station.
  • the determining unit 313 may determine the distance between the UE and the base station, or the first control unit 311 may control to receive information indicating the distance between the UE and the base station from the base station.
  • the feedback by the UE may include HARQ-ACK for PDSCH.
  • the first control unit 311 may be configured to use a separate HARQ process for PDSCH carrying beam switching information, or set the HARQ process used for PDSCH carrying beam switching information to an active state.
  • the embodiments of the present disclosure can also be applied to the activation/deactivation of semi-static resources.
  • the first control unit 111 of the electronic device 100 on the base station side may be configured to control to send information for activating/deactivating semi-static resources to the user equipment through beam-based NTN communication.
  • the first control unit 111 may send information for activating/deactivating semi-static resources through the MAC CE in the PDSCH.
  • the first control unit 111 may be configured to activate/deactivate one semi-persistent CSI-RS resource set among multiple semi-persistent CSI-RS resource sets through the MAC CE information in the PDSCH.
  • the first control unit 111 may be configured to activate/deactivate one semi-persistent CSI-IM resource set among multiple semi-persistent CSI-IM resource sets through the MAC CE information in the PDSCH.
  • the first control unit 111 may be configured to activate/deactivate one of a plurality of semi-persistent CSI report configuration in PUCCH through the MAC CE information in the PDSCH.
  • the first control unit 111 may be configured to activate/deactivate one of a plurality of semi-persistent SRS resource sets through MAC CE information in the PDSCH.
  • the first control unit 111 may be configured to activate/deactivate one semi-persistent ZP CSI-RS resource set among multiple semi-persistent ZP CSI-RS resource sets through MAC CE information in the PDSCH.
  • the first control unit 311 of the electronic device 300 on the user equipment side may be configured to control to receive information on activation/deactivation of semi-static resources from the base station through beam-based NTN communication.
  • the determining unit 313 is configured to determine the time position at which the UE applies the activation/deactivation information of the semi-static resource.
  • the second control unit 315 is configured to perform control to apply activation/deactivation information of the semi-static resource at the determined time position.
  • the first control unit 311 performs control to receive information for semi-persistent CSI-RS resource set activation/deactivation carried by the MAC CE of the PDSCH from the base station.
  • the determining unit 313 is configured to determine the semi-persistent CSI-RS resource set ID to be activated/deactivated and the time position of the semi-persistent CSI-RS resource set activation/deactivation based on the information.
  • the second control unit 315 is configured to perform control to apply the activation/deactivation of the CSI-RS resource set indicated by the semi-persistent CSI-RS resource set ID at the time position determined by the determination unit 313.
  • the first control unit 311 performs control to receive the activation/deactivation information of the semi-persistent CSI-IM resource set carried by the MAC CE of the PDSCH from the base station.
  • the determining unit 313 is configured to determine the semi-persistent CSI-IM resource set ID to be activated/deactivated and the time position of the semi-persistent CSI-IM resource set to be activated/deactivated based on the information.
  • the second control unit 315 is configured to perform control to apply the activation/deactivation of the CSI-IM resource set indicated by the semi-persistent CSI-IM resource set ID at the time position determined by the determining unit 313.
  • the first control unit 311 performs control to receive information for semi-persistent CSI report configuration in PUCCH activation/deactivation carried by the MAC CE of the PDSCH from the base station.
  • the determining unit 313 is configured to determine the semi-persistent CSI report configuration in PUCCH to be activated/deactivated based on the information and the time position of the semi-persistent CSI report configuration in PUCCH activation/deactivation.
  • the second control unit 315 is configured to perform control to apply corresponding CSI report configuration in PUCCH activation/deactivation at the time position determined by the determining unit 313.
  • the first control unit 311 performs control to receive information for activation/deactivation of a semi-persistent SRS resource set carried by the MAC CE of the PDSCH from the base station.
  • the determining unit 313 is configured to determine the semi-persistent SRS resource set ID to be activated/deactivated and the time position of the semi-persistent SRS resource set activation/deactivation based on the information.
  • the second control unit 315 is configured to perform control to apply the activation/deactivation of the SRS resource set indicated by the semi-persistent SRS resource set ID at the time position determined by the determination unit 313.
  • the first control unit 311 performs control to receive the activation/deactivation information of the semi-persistent ZP CSI-RS resource set carried by the MAC CE of the PDSCH from the base station.
  • the determining unit 313 is configured to determine the semi-persistent ZP CSI-RS resource set ID to be activated/deactivated and the time position of the semi-persistent ZP CSI-RS resource set activation/deactivation based on the information.
  • the second control unit 315 is configured to perform control to apply the activation/deactivation of the ZP CSI-RS resource set indicated by the semi-persistent ZP CSI-RS resource set ID at the time position determined by the determination unit 313.
  • the information controlled by the first control unit 311 to receive from the base station may include information of semi-static resources to be activated/deactivated, and may also include information used by the determining unit 313 to determine a time position.
  • the information for determining the time position received from the base station may include the information of the absolute time position where the activation/deactivation information of the semi-static resource is applied.
  • semi-static resources include but are not limited to the above-mentioned semi-persistent ZP-CSI-RS, semi-persistent CSI-RS, semi-persistent CSI-RS, and semi-persistent CSI-RS.
  • Static channel state information interference measurement (semi-persistent CSI-IM), semi-static channel state information reporting (semi-persistent CSI reporting), semi-persistent sounding reference signal (semi-persistent SRS).
  • This solution can be used when there is no HARQ mechanism or no HARQ-ACK feedback mechanism in the NTN system.
  • FIG. 11 shows a diagram of an example of the timing configuration of the base station and the user equipment side when the semi-static resource is activated/deactivated.
  • the base station adds the absolute time value of the semi-static resource activation/deactivation of the UE to the MAC CE, such as T1.
  • the absolute time value is used by the UE side determining unit 313 to determine the time position of the semi-static resource activation/deactivation.
  • the UE applies the semi-static resource activation/deactivation information at time T1 according to the received information of the semi-static resource to be activated/deactivated and T1.
  • the absolute time value can be expressed in various time forms. In the case where the absolute time value T1 is expressed by slot number, the UE applies semi-static resource activation/deactivation information at slot m, for example.
  • FIG. 12 shows a diagram of another example of the timing configuration of the base station and the user equipment side when the semi-static resource is activated/deactivated.
  • the base station can add to the MAC CE the absolute time value T0 for sending the semi-static resource activation/deactivation information, or the time T0 can also be implicit, such as the slot number value (slot number) of the PDSCH carrying the MAC CE. ) Means.
  • the UE will apply this semi-static resource activation/deactivation information after receiving the MAC CE for a predetermined period of time such as X ms or x slots.
  • the predetermined duration can be a predefined value, which is commonly known by the base station and the UE, such as 16 slots, 10 milliseconds, etc.; it can also be calculated based on a certain algorithm, for example, based on the relationship between the satellite and the user. The distance is calculated.
  • the value of X ms or x slots is not limited to a predefined value, but can also be explicitly configured, such as one of the following: directly indicated in DCI or RRC or MAC CE; through a combination of multiple signaling Mode indication; indication by accumulating the indication value in DCI or RRC or MAC CE on an existing reference value such as common TA.
  • the UE receives the MAC CE indicating semi-static resource activation/deactivation in slot n, and then applies the semi-static resource activation/deactivation information after a predetermined period of time slot m. Therefore, the UE is in slot n. n+m applies semi-static resource activation/deactivation information.
  • the information received from the base station may include the information of the semi-static resource to be activated/deactivated and the predetermined duration
  • the determining unit 313 may determine the time position after the predetermined duration has elapsed from receiving the information as The time location of the activation/deactivation information of the semi-static resource is applied.
  • the information sent by the first control unit 111 on the base station side to the UE may include semi-static resource activation/deactivation information and a second duration for the UE to receive from
  • the activation/deactivation information of the semi-static resource is applied at the second time position after the second time period from the information.
  • the base station transmits the PDSCH containing the activated semi-static resource information at time T1
  • the user receives the PDSCH containing the activated semi-static resource information at T2
  • the user applies the activation information of this semi-static resource at time T2+X.
  • the base station transmits the PDSCH containing the activated semi-static resource information in slot n
  • the user receives the PDSCH containing the activated semi-static resource information in slot n
  • the user The activation information of this semi-static resource is applied at slot n+m.
  • the second duration here is equivalent to the predetermined duration in the example of FIG. 12, and the relevant description is also applicable, and will not be repeated here.
  • the base station and UE can implement the correct application of the semi-static resource activation/deactivation timing, ensuring the base station and UE application Time consistency of activation/deactivation of semi-static resources.
  • this scheme can also be used in the case of a HARQ-ACK feedback mechanism in the NTN system.
  • Fig. 13 shows an example of semi-static resource activation in the case of a HARQ-ACK feedback mechanism.
  • the base station sends PDSCH, which carries MAC CE for semi-static resource activation.
  • the UE receives and demodulates the PDSCH, and if the demodulation is successful, it feeds back an ACK to the base station, and if the demodulation fails, it feeds back a NACK to the base station.
  • the UE may apply this semi-static resource activation/deactivation information for a predetermined period of time after the time slot in which the HARQ-ACK information for the PDSCH is sent, such as at Xms or at x slots.
  • the predetermined duration may be a certain predefined value, which is commonly known by the base station and the UE; or it may be calculated based on a certain algorithm, for example, calculated based on the distance between the satellite and the user.
  • the value of X ms or x slots is not limited to a predefined value, but can also be explicitly configured, such as one of the following: directly indicated in DCI or RRC or MAC CE; through a combination of multiple signaling Mode indication; indication by accumulating the indication value in DCI or RRC or MAC CE on an existing reference value such as common TA.
  • the first control unit 311 may also be configured to control to send feedback of information to the base station, and the determining unit 313 may determine the activation/deactivation information of the application of the semi-static resource based on the sending time of the feedback and the predetermined duration Time location.
  • the feedback by the UE may include HARQ-ACK for PDSCH.
  • the first control unit 311 may be configured to use a separate HARQ process for PDSCH carrying beam switching information, or set the HARQ process used for PDSCH carrying beam switching information to an active state.
  • the base station separately configures the HARQ process for the PDSCH containing the semi-static resource activation/deactivation information, and does not report jointly with other PDSCHs.
  • the base station always configures activated HARQ for the PDSCH containing semi-static resource activation/deactivation information.
  • the base station can send semi-static resource activation/deactivation information and absolute time information to instruct the UE when to apply semi-static resource activation/deactivation Activation information; semi-static resource activation/deactivation information can be sent through the base station, and it is agreed that the UE will apply this semi-static resource activation/deactivation information after receiving the semi-static resource activation/deactivation information for a predetermined duration such as X ms or x slots .
  • the timing design of semi-static resource activation/deactivation can be based on HARQ-ACK, that is, it is agreed that the UE will send the activation/deactivation for semi-static resource
  • the HARQ-ACK of the PDSCH of the activation information is predetermined, such as X ms or x slots
  • the semi-static resource activation/deactivation information is applied.
  • a separate specific HARQ process can be used for the PDSCH carrying semi-static resource activation/deactivation information, or the HARQ process of the PDSCH carrying semi-static resource activation/deactivation information can always be enabled or activated.
  • the embodiments of the present disclosure may be more widely applicable to any occasion where the HARQ feedback mechanism is not applicable due to time delay and/or the communication configuration operation performed based on the HARQ feedback mechanism is not applicable, and is not limited to the above specific examples.
  • the first control unit 311 is configured to perform control to receive information about the communication configuration operation from the base station through beam-based non-terrestrial network communication
  • the determination unit 313 is configured to determine the time position of the communication configuration operation of the user equipment
  • the second control unit 315 is configured to perform control to perform the communication configuration operation of the user equipment at the determined time position.
  • the specific operation will be adaptively modified depending on the communication configuration operation to be performed.
  • FIG. 4 shows a process example of the wireless communication method on the UE side.
  • the method includes step S410 of receiving information about beam switching of the base station from the base station through beam-based NTN communication; step S420 of determining the time position of the beam switching of the UE; and step S430 of performing beam switching of the UE at the determined time position .
  • embodiments of the present invention also include a computer-readable medium, which includes executable instructions, which when executed by an information processing device, cause the information processing device to execute the method according to the foregoing embodiment.
  • each step of the foregoing method and each component module and/or unit of the foregoing apparatus may be implemented as software, firmware, hardware, or a combination thereof.
  • a computer with a dedicated hardware structure such as the general-purpose computer 1400 shown in FIG. 14
  • a program that constitutes the software for implementing the above method can be installed from a storage medium or network to a program that constitutes the software for implementing the above method.
  • various programs various functions can be executed.
  • an arithmetic processing unit (ie, CPU) 1401 performs various processes in accordance with a program stored in a read only memory (ROM) 1402 or a program loaded from a storage portion 1408 to a random access memory (RAM) 1403.
  • the RAM 1403 also stores data required when the CPU 1401 executes various processes and the like as necessary.
  • the CPU 1401, the ROM 1402, and the RAM 1403 are linked to each other via a bus 1404.
  • the input/output interface 1405 is also linked to the bus 1404.
  • the following components are linked to the input/output interface 1405: input part 1406 (including keyboard, mouse, etc.), output part 1407 (including display, such as cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.) , Storage part 1408 (including hard disk, etc.), communication part 1409 (including network interface card such as LAN card, modem, etc.).
  • the communication section 1409 performs communication processing via a network such as the Internet.
  • the driver 1410 can also be linked to the input/output interface 1405 according to needs.
  • Removable media 1411 such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, etc. are mounted on the drive 1410 as needed, so that the computer programs read from them are installed into the storage portion 1408 as needed.
  • a program constituting the software is installed from a network such as the Internet or a storage medium such as a removable medium 1411.
  • this storage medium is not limited to the detachable medium 1411 shown in FIG. 14 which stores the program and is distributed separately from the device to provide the program to the user.
  • removable media 1411 include magnetic disks (including floppy disks (registered trademarks)), optical disks (including compact disk read-only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including mini disks (MD) (registered trademarks) )) and semiconductor memory.
  • the storage medium may be a ROM 1402, a hard disk included in the storage portion 1408, etc., in which programs are stored and distributed to users together with the devices containing them.
  • the embodiment of the present invention also relates to a program product storing machine-readable instruction codes.
  • the instruction code is read and executed by a machine, the above method according to the embodiment of the present invention can be executed.
  • a storage medium for carrying the above-mentioned program product storing machine-readable instruction codes is also included in the disclosure of the present invention.
  • the storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and so on.
  • the electronic device may be implemented as any type of gNB or evolved Node B (eNB), such as a macro eNB and a small eNB.
  • eNB evolved Node B
  • a small eNB may be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB.
  • the electronic device may be implemented as any other type of base station, such as NodeB and base transceiver station (BTS).
  • BTS base transceiver station
  • the electronic device may include: a main body (also referred to as a base station device) configured to control wireless communication; and one or more remote wireless heads (RRH) arranged in a place different from the main body.
  • a main body also referred to as a base station device
  • RRH remote wireless heads
  • various types of terminals to be described below can all operate as base stations by temporarily or semi-persistently performing base station functions.
  • the electronic device When the electronic device is used on the user equipment side, it can be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/dongle type mobile router, and a digital camera) or Vehicle terminal (such as car navigation equipment).
  • the electronic device may be a wireless communication module (such as an integrated circuit module including a single or multiple chips) installed on each of the aforementioned terminals.
  • FIG. 15 is a block diagram showing an example of a schematic configuration of a smart phone 2500 to which the technology of the present disclosure can be applied.
  • the smart phone 2500 includes a processor 2501, a memory 2502, a storage device 2503, an external connection interface 2504, a camera 2506, a sensor 2507, a microphone 2508, an input device 2509, a display device 2510, a speaker 2511, a wireless communication interface 2512, one or more An antenna switch 2515, one or more antennas 2516, a bus 2517, a battery 2518, and an auxiliary controller 2519.
  • the processor 2501 may be, for example, a CPU or a system on a chip (SoC), and controls the functions of the application layer and other layers of the smart phone 2500.
  • the memory 2502 includes RAM and ROM, and stores data and programs executed by the processor 2501.
  • the storage device 2503 may include a storage medium such as a semiconductor memory and a hard disk.
  • the external connection interface 2504 is an interface for connecting external devices such as memory cards and universal serial bus (USB) devices to the smart phone 2500.
  • the camera 2506 includes an image sensor, such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image.
  • the sensor 2507 may include a group of sensors, such as a measurement sensor, a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor.
  • the microphone 2508 converts the sound input to the smart phone 2500 into an audio signal.
  • the input device 2509 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 2510, and receives operations or information input from the user.
  • the display device 2510 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smart phone 2500.
  • the speaker 2511 converts the audio signal output from the smart phone 2500 into sound.
  • the wireless communication interface 2512 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication.
  • the wireless communication interface 2512 may generally include, for example, a baseband (BB) processor 2513 and a radio frequency (RF) circuit 2514.
  • the BB processor 2513 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication.
  • the RF circuit 2514 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 2516.
  • the wireless communication interface 2512 may be a chip module on which a BB processor 2513 and an RF circuit 2514 are integrated. As shown in FIG.
  • the wireless communication interface 2512 may include a plurality of BB processors 2513 and a plurality of RF circuits 2514.
  • FIG. 15 shows an example in which the wireless communication interface 2512 includes a plurality of BB processors 2513 and a plurality of RF circuits 2514, the wireless communication interface 2512 may also include a single BB processor 2513 or a single RF circuit 2514.
  • the wireless communication interface 2512 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless local area network (LAN) scheme.
  • the wireless communication interface 2512 may include a BB processor 2513 and an RF circuit 2514 for each wireless communication scheme.
  • Each of the antenna switches 2515 switches the connection destination of the antenna 2516 among a plurality of circuits included in the wireless communication interface 2512 (for example, circuits for different wireless communication schemes).
  • Each of the antennas 2516 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 2512 to transmit and receive wireless signals.
  • the smart phone 2500 may include multiple antennas 2516.
  • FIG. 15 shows an example in which the smart phone 2500 includes a plurality of antennas 2516, the smart phone 2500 may also include a single antenna 2516.
  • the smart phone 2500 may include an antenna 2516 for each wireless communication scheme.
  • the antenna switch 2515 may be omitted from the configuration of the smart phone 2500.
  • the bus 2517 connects the processor 2501, memory 2502, storage device 2503, external connection interface 2504, camera 2506, sensor 2507, microphone 2508, input device 2509, display device 2510, speaker 2511, wireless communication interface 2512, and auxiliary controller 2519 to each other. connection.
  • the battery 2518 supplies power to each block of the smart phone 2500 shown in FIG. 11 via a feeder line, and the feeder line is partially shown as a dashed line in the figure.
  • the auxiliary controller 2519 operates the minimum necessary functions of the smartphone 2500 in the sleep mode, for example.
  • the transceiving device of the device on the user equipment side may be implemented by a wireless communication interface 2512.
  • the processor 2501 or the auxiliary controller 2519 may also be implemented by the processor 2501 or the auxiliary controller 2519.
  • the power consumption of the battery 2518 can be reduced by executing part of the functions of the processor 2501 by the auxiliary controller 2519.
  • the processor 2501 or the auxiliary controller 2519 can execute the processing circuit and/or the processing circuit of each unit of the electronic device or the information processing device on the user equipment side according to the embodiment of the present invention by executing the program stored in the memory 2502 or the storage device 2503. At least part of the function.
  • FIG. 16 is a block diagram showing an example of a schematic configuration of a gNB to which the technology of the present disclosure can be applied.
  • the gNB 2300 includes multiple antennas 2310 and base station equipment 2320.
  • the base station device 2320 and each antenna 2310 may be connected to each other via a radio frequency (RF) cable.
  • RF radio frequency
  • Each of the antennas 2310 includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple input multiple output (MIMO) antenna), and is used for the base station device 2320 to transmit and receive wireless signals.
  • the gNB 2300 may include multiple antennas 2310.
  • multiple antennas 2310 may be compatible with multiple frequency bands used by gNB 2300.
  • the base station equipment 2320 includes a controller 2321, a memory 2322, a network interface 2323, and a wireless communication interface 2325.
  • the controller 2321 may be, for example, a CPU or a DSP, and operates various functions of a higher layer of the base station apparatus 2320. For example, the controller 2321 generates a data packet based on the data in the signal processed by the wireless communication interface 2325, and transmits the generated packet via the network interface 2323. The controller 2321 may bundle data from a plurality of baseband processors to generate a bundled packet, and transfer the generated bundled packet. The controller 2321 may have a logic function for performing control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby gNB or core network nodes.
  • the memory 2322 includes RAM and ROM, and stores programs executed by the controller 2321 and various types of control data (such as a terminal list, transmission power data, and scheduling data).
  • the network interface 2323 is a communication interface for connecting the base station device 2320 to the core network 2324.
  • the controller 2321 can communicate with the core network node or another gNB via the network interface 2323.
  • the gNB 2300 and the core network node or other gNB may be connected to each other through logical interfaces (such as the S1 interface and the X2 interface).
  • the network interface 2323 may also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 2323 is a wireless communication interface, the network interface 2323 can use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 2325.
  • the wireless communication interface 2325 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connection to terminals located in the cell of the gNB 2300 via the antenna 2310.
  • the wireless communication interface 2325 may generally include, for example, a BB processor 2326 and an RF circuit 2327.
  • the BB processor 2326 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform layers (such as L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)) various types of signal processing.
  • the BB processor 2326 may have part or all of the above-mentioned logical functions.
  • the BB processor 2326 may be a memory storing a communication control program, or a module including a processor and related circuits configured to execute the program.
  • the update program can change the function of the BB processor 2326.
  • the module may be a card or a blade inserted into the slot of the base station device 2320. Alternatively, the module can also be a chip mounted on a card or blade.
  • the RF circuit 2327 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 2310.
  • the wireless communication interface 2325 may include a plurality of BB processors 2326.
  • multiple BB processors 2326 may be compatible with multiple frequency bands used by gNB 2300.
  • the wireless communication interface 2325 may include a plurality of RF circuits 2327.
  • multiple RF circuits 2327 may be compatible with multiple antenna elements.
  • FIG. 16 shows an example in which the wireless communication interface 2325 includes a plurality of BB processors 2326 and a plurality of RF circuits 2327, the wireless communication interface 2325 may also include a single BB processor 2326 or a single RF circuit 2327.
  • the transceiver device of the wireless communication device on the base station side may be implemented by the wireless communication interface 2325.
  • At least a part of the functions of the electronic device or the processing circuit of the wireless communication device and/or each unit on the base station side may also be implemented by the controller 2321.
  • the controller 2321 may execute at least a part of the functions of the electronic device or wireless communication device and/or the processing circuit of each unit on the base station side by executing a program stored in the memory 2322.
  • the method of the present invention is not limited to be executed according to the time sequence described in the specification, and can also be executed in other time sequence, in parallel or independently. Therefore, the execution order of the methods described in this specification does not limit the technical scope of the present invention.

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Abstract

一种用于无线通信的电子装置、无线通信方法和计算机可读介质被公开。所述用于无线通信的电子装置包括处理电路。处理电路被配置为进行控制以通过基于波束的非地面网络通信向用户设备发送关于基站的波束切换的信息；确定波束切换的时间或空间位置；以及进行控制以在到达所确定的时间或空间位置时进行波束切换。

Description

电子装置、无线通信方法和计算机可读介质
本申请要求以下申请的优先权：2019年4月30日提交中国专利局、申请号为201910361254.9、发明名称为“电子装置、无线通信方法和计算机可读介质”的中国专利申请，以及2019年8月16日提交中国专利局、申请号为201910759088.8、发明名称为“电子装置、无线通信方法和计算机可读介质”的中国专利申请，其全部内容通过引用结合在本申请中。
技术领域
本公开一般涉及无线通信领域，更具体地，涉及用于非地面网络(Non-terrestrial networks，NTN)通信的电子装置、无线通信方法以及计算机可读介质。
背景技术
3GPP(第三代合作伙伴项目)已经提出将卫星通信作为诸如飞机通信、海上船舶和偏远地区回程等场景中的选择，并建议充分利用卫星的能力。
由于卫星与地面的相对运动，导致卫星基站的服务波束需要根据卫星的移动而不断调整以保证对用户的覆盖，即卫星的移动会导致基站以及用户侧的波束切换。如图5和图6的示例所示，在时刻T1，向用户提供服务的波束是SSB#1，在时刻T2，由于卫星的移动导致向用户提供服务的波束变为SSB#2。SSB#1和SSB#2属于同一个小区，即由同一个卫星(图5中的近地轨道卫星LEO#1)产生。另外，即使对于与地面相对静止的卫星，也可能由于用户设备的移动而需要对波束进行调整。例如，当地球同步轨道(GEO)卫星向飞机上的用户提供服务时，由于飞机的移动，GEO需要切换波束以保证覆盖。
发明内容
在下文中给出了关于本发明实施例的简要概述，以便提供关于本发明的某些方面的基本理解。应当理解，以下概述并不是关于本发明的 穷举性概述。它并不是意图确定本发明的关键或重要部分，也不是意图限定本发明的范围。其目的仅仅是以简化的形式给出某些概念，以此作为稍后论述的更详细描述的前序。
根据一个实施例，提供一种用于无线通信的电子装置，其包括处理电路。处理电路被配置为：进行控制以通过基于波束的非地面网络通信向用户设备发送关于基站的波束切换的信息；确定波束切换的时间或空间位置；以及进行控制以在到达所确定的时间或空间位置时进行波束切换。
根据另一个实施例，一种无线通信方法包括：通过基于波束的非地面网络通信向用户设备发送关于基站的波束切换的信息；确定波束切换的时间或空间位置；以及在到达所确定的时间或空间位置时进行波束切换。
根据又一个实施例，提供一种用于无线通信的电子装置，其包括处理电路。处理电路被配置为：进行控制以通过基于波束的非地面网络通信从基站接收关于基站的波束切换的信息；确定用户设备的波束切换的时间位置；以及进行控制以在所确定的时间位置进行用户设备的波束切换。
根据再一个实施例，一种无线通信方法包括：通过基于波束的非地面网络通信从基站接收关于基站的波束切换的信息；确定用户设备的波束切换的时间位置；以及在所确定的时间位置进行用户设备的波束切换。
本发明实施例还包括计算机可读介质，其包括可执行指令，当可执行指令被信息处理设备执行时，使得信息处理设备执行根据上述实施例的方法。
通过本公开实施例，能够使基站和用户设备实现正确的波束切换，避免因基站和用户设备波束切换时间不一致导致的基站波束和用户设备波束的不对齐继而造成链路失败的情况。
通过以下结合附图对本发明的优选实施例的详细说明，本发明的这些以及其他优点将更加明显。
附图说明
本发明可以通过参考下文中结合附图所给出的描述而得到更好的理解，其中在所有附图中使用了相同或相似的附图标记来表示相同或者相似的部件。所述附图连同下面的详细说明一起包含在本说明书中并且形成本说明书的一部分，而且用来进一步举例说明本发明的优选实施例和解释本发明的原理和优点。在附图中：
图1是示出根据本发明的一个实施例的用于无线通信的电子装置的配置示例的框图；
图2是示出根据本发明的一个实施例的无线通信方法的过程示例的流程图；
图3是示出根据本发明的另一个实施例的用于无线通信的电子装置的配置示例的框图；
图4是示出根据本发明的另一个实施例的无线通信方法的过程示例的流程图；
图5和图6是示出卫星的移动导致的波束切换的示例情形的示意图；
图7至图13是用于说明基站以及用户设备侧的波束切换的时序配置的示例的示意图；
图14是示出实现本公开的方法和设备的计算机的示例性结构的框图；
图15是示出可以应用本公开内容的技术的智能电话的示意性配置的示例的框图；以及
图16是示出可以应用本公开内容的技术的gNB(基站)的示意性配置的示例的框图。
具体实施方式
下面将参照附图来说明本发明的实施例。在本发明的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。应当注意，为了清楚的目的，附图和说明中省略了与本发明无关的、本领域普通技术人员已知的部件和处理的 表示和描述。
如图1所示，根据本实施例的用于无线通信的电子装置100包括处理电路110。处理电路110例如可以实现为特定芯片、芯片组或者中央处理单元(CPU)等。
处理电路110包括第一控制单元111、确定单元113和第二控制单元115。需要指出，虽然附图中以功能块的形式示出了第一控制单元111、确定单元113和第二控制单元115，然而应理解，各单元的功能也可以由处理电路作为一个整体来实现，而并不一定是通过处理电路中分立的实际部件来实现。另外，虽然图中以一个框示出处理电路，然而电子装置可以包括多个处理电路，并且可以将各单元的功能分布到多个处理电路中，从而由多个处理电路协同操作来执行这些功能。
如前所述，由于卫星与地面的相对运动或用户设备(UE)的运动，导致卫星基站的服务波束需要根据卫星或UE的移动而调整以保证对UE的覆盖，即卫星或UE的移动会导致基站以及UE侧的波束切换。根据本实施例的电子装置可以实现在基站(卫星)侧。
第一控制单元111被配置为进行控制以通过基于波束的NTN通信向UE发送关于基站的波束切换的信息。
在现有的地面网络中，涉及到波束切换的信道或信号例如可以包括物理下行控制信道(PDCCH)、物理下行共享信道(PDSCH)、物理上行控制信道(PUCCH)、物理上行共享信道(PUSCH)、信道状态信息干扰测量(CSI-IM)或信道状态信息参考信号(CSI-RS)以及探测参考信号(SRS)。这里以PDCCH和PDSCH为例进行简要说明。对于PDCCH，首先通过无线资源控制(RRC)为核心集(Coreset)配置多个传输配置指示(TCI)状态，然后通过媒体接入控制控制单元(MAC CE)激活/指示其中的一个TCI状态，UE在反馈含有PDCCH的波束切换信息的混合自动重传确认(HARQ-ACK)的3ms后进行波束切换。对于PDSCH，首先通过RRC为PDSCH配置多个TCI状态，然后通过MAC CE激活其中的部分TCI状态，其中这部分TCI状态所指示的波束的激活是在UE反馈包含PDSCH的波束激活信息的HARQ-ACK的3ms后完成的，最后通过下行控制信息(DCI)指示其中的一个TCI状态。
由以上描述可以看出，地面网络中波束切换是基于UE反馈HARQ-ACK的时间确定的。然而，由于非地面网络的传输时延，传统地面网络中的HARQ-ACK机制以及基于UE反馈HARQ-ACK的时间确定的波束切换定时不适用于非地面网络。本公开实施例则提供了非地面网络的波束切换的方案。
类似地，地面网络中的半静态资源配置的时序也是基于HARQ-ACK的时间确定的，半静态资源配置例如包括如下中的一个或多个的激活/去激活：半静态零功率信道状态信息参考信号(semi-persistent ZP-CSI-RS)、半静态非零功率信道状态信息参考信号(semi-persistent CSI-RS)、半静态信道状态信息干扰测量(semi-persistent CSI-IM)、半静态信道状态信息上报(semi-persistent CSI reporting)、半静态探测参考信号(semi-persistent SRS)。
以semi-persistent CSI-RS的激活为例，首先通过无线资源控制(RRC)为用户设备配置多个信道状态信息参考信号资源集(CSI-RS resource sets)，然后通过媒体接入控制控制单元(MAC CE)激活其中的一个CSI-RS resource set。假如UE在时隙(slot)n针对含有激活信息的PDSCH反馈ACK，那么UE认为CSI-RS的半静态资源的激活在slot n+3ms后应用，其中，3ms也可以用时隙数代替，例如为
Figure PCTCN2020086336-appb-000001
个时隙，其中，N表示在μ指示的子载波间隔(SCS)下，每个子帧(subframe)中包含的slot个数。其中，μ表示SCS的指数放大值，即SCS＝15KHz*2 μ。然而，由于非地面网络的传输时延，传统地面网络中的HARQ-ACK机制以及基于UE反馈HARQ-ACK的时间(例如，上述slot n)确定的半静态资源激活(对于去激活的情形类似)时序不适用于非地面网络。本公开实施例也可以适用于半静态资源的激活/去激活。上文所述的波束切换和半静态资源的激活/去激活仅是示例，本公开实施例可以应用于其他场景，比如波束去激活(通过MAC CE进行波 束指示)等。更一般地，本公开实施例可以适用于由于时延而使得HARQ反馈机制不适用以及/或者基于HARQ反馈机制执行的通信配置操作不适用的任何场合，而不限于本实施例中给出的具体示例。例如，第一控制单元111可以被配置为进行控制以通过基于波束的非地面网络通信向用户设备发送关于基站的通信配置操作的信息。这里的通信配置操作包括但不限于波束切换、波束激活/去激活、半静态资源的激活/去激活，等等。
需要注意的是，这里提到的时间位置，不仅包括用小时、分钟、秒、或毫秒等时间单位表示的时间值，还包括用在基站和用户设备同步状态下的时隙序号(slot number)、或系统帧序号(system frame number)等系统时间位置表示的时间值。此外，本文所提到的各种时长不仅包括用小时、分钟、秒、或毫秒等各种时间单元表示的时长，还包括用时隙数表示的时长。对于以下具体描述中提到的时间位置、绝对时间位置、时间值、绝对时间值也有相同的情况，后文中不再重复。
为了便于理解，下文的描述将以波束切换和半静态资源的激活/去激活作为具体示例，但是应该理解，这并不是限制性的。
根据一个实施例，第一控制单元111可以被配置为通过PDCCH或PDSCH中的关于空间共位关系的指示信息来指示基站要切换至的波束或者指示用户设备要切换至的波束。也就是说，基站向UE发送的关于基站的波束切换的信息可以包括指示基站要切换至的波束，也可以包括指示UE要切换至的波束(由于UE要切换至的波束与基站要切换至的波束相对应，因此UE要切换至的波束也可以看作关于基站的波束切换的信息)。
更具体地，基站可以通过PDCCH或PDSCH中的TCI状态来指示基站要切换至的波束。在这种情况下，基站可以将下行波束通知给UE，UE根据已测量的上下行波束配对结果进行对应的上行波束切换。或者，基站可以通过PDCCH或PDSCH中的空间关系信息(spatial relation information)来指示UE要切换至的波束。
继续参照图1，确定单元113被配置为确定基站的波束切换的时间位置或空间位置。第二控制单元115被配置为进行控制以在到达确定单元113所确定的时间位置或空间位置时进行基站的波束切换。
基于在NTN中不同的混合自动重传(HARQ)假设，上述方案可以包含多种波束切换的具体方式。HARQ假设可以包括NTN系统中没有HARQ机制或者没有HARQ-ACK反馈机制(例如仅反馈NACK)的情况以及NTN系统中有HARQ-ACK机制的情况。接下来，分别说明针对没有HARQ机制(或者没有HARQ-ACK反馈机制)以及有HARQ-ACK机制的情况的实施例。
根据一个实施例，由第一控制单元111进行控制以向UE发送的信息可以包括基站要切换至的波束以及由确定单元113确定的时间或空间位置。换句话说，可以通过基站发送被激活的波束信息以及绝对时间信息或卫星地理位置信息的方式来指示UE在什么时候进行波束切换。
该方案可以用于NTN系统中没有HARQ机制或者没有HARQ-ACK反馈机制的情况。在该情况下，UE不会反馈波束切换信息(例如，地面网络中使用的MAC CE信息：TCI激活(activation))所在的PDSCH是否被正确接收，此时例如可以通过类似传输时间间隔捆绑(TTI bundling)的方式提高系统可靠性。
为了使UE在正确的时间切换波束，可以通过基站发送被激活的波束的信息以及绝对时间信息的方式来指示UE在什么时候进行波束切换。
在图7所示的例子中，基站例如在MAC CE中加入UE进行波束切换的绝对时间值，例如T1，UE根据收到的TCI#1和T1，在T1时刻将UE侧波束切换为与TCI#1相应的波束。绝对时间值可以是包括小时、分钟、秒、毫秒的时间值，也可以是只包含上述时间单位的一部分的时间值，例如只包含秒和毫秒的时间值。此外，绝对时间值也可以是时隙的序号值。如图7所示，基站和UE在绝对时间T1处进行波束切换。
图8示出了基于绝对时间信息进行波束切换的另一示例。在该示例中，基站在MAC CE中加入发送该波束切换信息的绝对时间值T0，该时间T0可以是隐式的，比如由携带此MAC CE的PDSCH的时隙序号值(slot number)表示。UE会在T0之后的预定时长例如X ms或x个slot后进行波束切换。如图8所示，基站和UE在绝对时间T0后的预定 时长处进行波束切换。另外，X ms或者x个slot的值不局限于预定义的值，还可以是显性地配置的，比如如下之一：直接在DCI或者RRC或者MAC CE中指示；通过多种信令的组合方式指示；通过在某个已有的基准值如common TA上累加DCI或者RRC或者MAC CE中的指示值进行指示。此外，X ms或者x个slot的值还可以是基于卫星和用户之间的距离进行计算得到的。
另外，基站可以通过发送激活的波束信息和卫星地理位置信息的方式来指示UE在什么时候进行波束切换。例如，基站可以在MAC CE中加入UE进行波束切换的卫星地理位置值，例如位置1，UE根据收到的TCI#1和位置1，在卫星运行到位置1时将UE侧波束切换为与TCI#1相应的波束。
用户可以根据基站广播的卫星星历图/轨迹图来判断卫星的位置。相应地，根据一个实施例，在确定单元113确定波束切换的空间位置并且由第一控制单元111将该空间位置通知给UE的情况下，第一控制单元111还可以被配置为进行控制以广播关于卫星星历图或卫星轨迹图的信息，从而UE可以根据卫星星历图或卫星轨迹图由基站进行波束切换的空间位置确定波束切换的时间位置，以便同步地进行UE侧的波束切换。
在上面的两个示例中，通过基站向UE发送绝对时间(或地理位置)信息来实现基站和UE的同时波束切换。然而本发明不限于此，根据另一个实施例，确定单元113可以被配置为确定波束切换的时间位置，该时间位置被确定为从基站向UE发出信息起经过第一时长后的第一时间位置，并且第一控制单元111向UE发送的信息可以包括基站要切换至的波束以及第二时长，用于UE在从接收到该信息起经过该第二时长后的第二时间位置进行UE的波束切换。
其中，第二时长可以是显性地配置的，比如如下之一：直接在DCI或者RRC或者MAC CE中指示；通过多种信令的组合方式指示；通过在某个已有的基准值如common TA上累加DCI或者RRC或者MAC CE中的指示值进行指示。
此外，第二时长可以是某个预定义的值，这个值是基站和UE共知的，如16个slot、10毫秒等；第二时长可以是基于某种算法计算出来的，比如根据卫星和用户之间的距离进行计算得到的。
此外，第二控制单元115还可以被配置为进行控制以在从信息的发出到基站的波束切换之间的时段的至少一部分中，同时使用切换源波束和切换目标波束两者进行与UE的通信。另外，还可以在考虑基站与UE之间的距离的情况下适当地设置上述第一时长和第二时长，以使得第二时间位置晚于第一时间位置。
在上述示例实施例中，基站向UE发送激活的波束信息并约定UE在收到波束激活信息的X ms或者x时隙后进行波束切换，并且约束基站行为，即在保护时间间隔内同时使用新波束和旧波束传输信息，从而进一步地降低链路失败的可能性。
在图9所示的例子中，基站在时刻T1发送包含激活的波束信息的PDSCH，基站在时刻T1+Z开始同时使用原服务波束和待切换至的新波束为用户提供服务，此时两个波束发送的内容相同。用户在T2收到包含激活的波束信息的PDSCH，用户在T2+X时刻进行波束切换。基站在时刻T1+Y后仅使用新波束为用户提供服务。例如，将时刻用slot来表示，则图9示出了：基站在slot n(相当于T1时刻)发送包含激活的波束信息的PDSCH，用户在slot n收到包含激活的波束信息的PDSCH，用户在slot n+m时刻(相当于T2+X时刻)应用此波束的激活信息、即执行波束切换，基站在slot n+k(相当于T1+Y时刻)后仅使用新波束为用户提供服务。上述示例中的Z可以等于0，即可以从信息的发出到基站的波束切换之间的整个时段中均使用切换源波束和切换目标波束两者进行与UE的通信。
另外，上述示例中的X例如可以根据用户解调控制信息的时间以及进行波束切换的时间来设置。优选地，将上述时间设置为使得T1+Y>T2+X。
通过上述示例实施例，即使在不存在针对包含波束切换信息的PDSCH的HARQ的情况下，基站和UE也能够实现正确的波束切换，避免了因基站和UE波束切换时间不一致导致的基站波束和UE波束的不对齐。
需要指出的是，尽管上面描述了NTN系统中没有HARQ机制或者没有HARQ-ACK反馈机制的情况下的示例实施例，然而在有HARQ-ACK机制的情况下也可以采用通过指示绝对时间或空间信息来 确定波束切换定时的方式。换句话说，通过指示绝对时间或空间信息来确定波束切换定时的方式与HARQ-ACK机制并不彼此矛盾。
接下来，继续参照图1说明在有HARQ-ACK机制的情况下的实施例。
根据一个实施例，第一控制单元111还被配置为进行控制以接收UE针对关于基站的波束切换的信息的反馈。确定单元113被配置为基于该反馈的发送时间确定基站的波束切换的时间位置。
具体地，UE的上述反馈可以包括针对PDSCH的HARQ-ACK。
例如，UE可以反馈波束切换信息(例如MAC CE信息：TCI激活)所在的PDSCH是否被正确接收。假如UE在时隙n处上报HARQ-ACK，UE可以在时隙n+X处进行波束切换。
下面参照图10说明有HARQ-ACK反馈的情况下的波束切换过程的示例。这里假设UE被配置有多个TCI状态，并且可以使用MAC CE来激活一个TCI状态。
如图10所示，基站发送PDSCH，其承载用于激活一个TCI状态的MAC CE。接下来，UE接收并解调该PDSCH，如果成功解调该PDSCH，则UE向基站反馈ACK，如果未成功解调该PDSCH，则UE向基站反馈NACK。UE可以在发送针对该PDSCH的HARQ-ACK信息的时隙之后X ms处改变其波束，而如果UE反馈NACK则UE不改变其波束。基站可以在从PDSCH的发送到UE发送针对该PDSCH的HARQ-ACK信息的时隙之后X ms处之间的时段内改变其波束。基站例如可以基于HARQ-ACK的接收时间以及基站与UE之间的距离来估计UE发送该HARQ-ACK的时间。此外，为了进一步地降低链路失败的可能性，基站可以采用如前所述的在保护时间间隔内同时使用新波束和旧波束传输信息的方式。
上述示例中的X的取值可以由UE与卫星基站的距离来决定。例如，在近地轨道(LEO)场景中，X可以为10ms，在地球同步轨道(GEO)场景中，X可以为300ms。
X的取值并不限于上述示例，而是可以通过预估卫星基站与UE之间的距离来计算得到。
相应地，根据一个实施例，向UE发送的信息还可以包括基站与UE之间的距离。
例如，基站可以通过RRC层信令或者MAC层信令或者DCI将距离信息通知该UE，也可以通过多种信令的组合方式得到。例如，假设卫星轨迹的近地点距地1500km，卫星基站通过RRC信令告知UE X1＝8ms，随着卫星轨迹的运动，卫星基站与UE之间的距离发生改变，卫星基站通过MAC层信令告知UE X2＝+1ms，那么UE将在反馈ACK后的X＝X1+X2＝9ms后进行波束切换。
在上述示例中，X、X1和X2可以是时间值或者时间的指代值。例如，X2＝1可以表示0.1ms，指代值与时间的关系可以以表格形式体现。
此外，对于不同的卫星轨道场景，例如可以参照下表确定上述时延X。
表1：不同NTN场景的传输延迟
Figure PCTCN2020086336-appb-000002
此外，基站与UE之间的距离也可以由UE确定。例如，如果UE具有全球导航卫星系统(GNSS)功能，其可以算出卫星与UE之间的距离。此外，UE还可以将所计算的距离或者UE的位置上报给基站。
通过上述方案，可以在存在针对包含波束切换信息的PDSCH的HARQ的情况下，根据NTN网络中大时延的特性采用合适的时间间隔，使基站和UE实现正确的波束切换，避免了因基站和UE波束切换时间不一致导致的基站波束和UE波束的不对齐继而导致的链路失败。
由于NTN中的超长时延，为了降低基站和UE的处理复杂度，可能会采取一种联合HARQ的方式，即将多个PDSCH的结果同时上报。在这种情况下，可以采用前面描述的指示绝对时间或空间位置的方式进行基站与UE侧的波束切换。或者，基站可以为包含波束切换信息的PDSCH单独配置HARQ过程，而不和其他的PDSCH一起进行联合上报。
相应地，根据一个实施例，第一控制单元111可以被配置为针对携带与基站的波束切换有关的信息的PDSCH进行单独的HARQ过程。
通过本方案，可以在存在针对包含波束切换信息的PDSCH的HARQ的情况下避免因联合HARQ导致的等待和处理时延，耽误了波束切换的时间。
另外，由于NTN中的超长时延，为了降低基站和UE的复杂度，可能会采取动态或者半静态地启用或禁用(enable/disable)HARQ的方式，即通过动态或者半静态的信令来指示UE是否进行HARQ反馈。在这种情况下，可以采用前面描述的指示绝对时间或空间位置的方式进行基站与UE侧的波束切换。或者，基站可以为含有波束切换信息的PDSCH始终配置激活的HARQ。相应地，根据一个实施例，第一控制单元111可以被配置为将携带与基站的波束切换有关的信息的PDSCH所使用的HARQ过程设置为激活状态。
上面描述了在NTN基础上提出的确定波束切换时序的方案。传统方案中进行波束切换的时序是基于HARQ进行设计的，然而由于非地面网络中超长时延的特性，非地面网络中的HARQ机制将不同于传统方案中的HARQ机制。本发明基于在NTN中不同的HARQ假设，设计了多种非地面网络波束切换的时序方案，接下来对上面描述的几个方面的实施例进行简要总结。
当没有针对于携带波束切换信息的PDSCH的HARQ过程时：可以通过基站发送激活的波束信息和绝对时间信息的方式，指示UE在什么时候进行波束切换；可以通过基站发送被激活的波束的信息，并约束基 站行为(在保护时间间隔内同时使用新波束和旧波束传输信息)，约定UE在收到波束激活信息的X ms后进行波束切换；或者通过基站发送激活的波束信息和卫星地理位置信息的方式，指示UE在什么时候进行波束切换。
当有针对于携带波束切换信息的PDSCH的HARQ过程时：波束切换的时序设计可以是基于HARQ-ACK的，即约定UE在发送针对包含波束激活信息的PDSCH的HARQ-ACK后X ms进行波束切换；此外，可以为携带波束切换信息的PDSCH使用单独的特定的HARQ过程，或者可以使携带波束切换信息的PDSCH的HARQ过程始终是启用或激活状态。
在前面对根据本发明实施例的电子装置的描述过程中，显然也公开了以下过程和方法。接下来，在不重复前面描述过的细节的情况下给出对根据本发明实施例的无线通信方法的说明。
如图2所示，根据一个实施例的无线通信方法包括通过基于波束的NTN通信向UE发送关于基站的波束切换的信息的步骤S210。该方法还包括确定波束切换的时间或空间位置的步骤S220，以及在到达所确定的时间或空间位置时进行波束切换的步骤S230。
上面描述的装置和方法对应于基站侧。在对基站侧的实施例的描述过程中，也涉及了UE侧的相应处理。接下来，在不重复与前面描述过的细节相应的细节的情况下，给出对UE侧的装置和方法的实施例的说明。
如图3所示，根据本实施例的用于无线通信的电子装置300包括处理电路310。处理电路310包括第一控制单元311、确定单元313和第二控制单元315。
第一控制单元311被配置为进行控制以通过基于波束的NTN通信从基站接收关于基站的波束切换的信息。
例如，从基站接收的信息可以包括基站要切换至的波束以及基站的波束切换的时间或空间位置。
确定单元313被配置为确定UE的波束切换的时间位置。
第二控制单元315被配置为进行控制以在所确定的时间位置进行 UE的波束切换。
根据一个实施例，从基站接收的信息可以包括基站要切换至的波束以及基站的波束切换的时间位置，并且确定单元313可以将基站的波束切换的时间位置确定为UE的波束切换的时间位置。
根据另一个实施例，从基站接收的信息可以包括基站要切换至的波束以及时长，并且确定单元313可以将从接收到该信息起经过该时长后的时间位置确定为UE的波束切换的时间位置。
此外，从基站接收的信息可以包括基站要切换至的波束、基站的波束切换的空间位置以及关于卫星星历图或卫星轨迹图的信息，并且确定单元313可以基于从基站接收的信息确定UE的波束切换的时间位置。
根据一个实施例，第一控制单元311还可以被配置为进行控制以向基站发送对信息的反馈，并且确定单元313可以基于反馈的发送时间以及UE与基站之间的距离确定UE的波束切换的时间位置。
该距离可以是由UE确定的或者是由基站指示的。相应地，确定单元313可以确定UE与基站之间的距离，或者第一控制单元311可以进行控制以从基站接收指示UE与基站之间的距离的信息。
UE进行的反馈可以包括针对PDSCH的HARQ-ACK。第一控制单元311可以被配置为针对携带波束切换信息的PDSCH使用单独的HARQ过程，或者将针对携带波束切换信息的PDSCH使用的HARQ过程设置为激活状态。
如前所述，本公开实施例也可以适用于半静态资源的激活/去激活。例如，基站侧的电子装置100的第一控制单元111可以被配置为进行控制以通过基于波束的NTN通信向用户设备发送用于激活/去激活半静态资源的信息。例如，第一控制单元111可以通过PDSCH中的MAC CE发送用于激活/去激活半静态资源的信息。
例如，第一控制单元111可以被配置为通过PDSCH中的MAC CE信息激活/去激活多个semi-persistent CSI-RS resource sets中的一个semi-persistent CSI-RS resource set。第一控制单元111可以被配置为通过PDSCH中的MAC CE信息激活/去激活多个semi-persistent CSI-IM resource sets中的一个semi-persistent CSI-IM resource set。第一控制单 元111可以被配置为通过PDSCH中的MAC CE信息激活/去激活多个semi-persistent CSI report configuration in PUCCH中的一个。第一控制单元111可以被配置为通过PDSCH中的MAC CE信息激活/去激活多个semi-persistent SRS resource sets中的一个semi-persistent SRS resource set。第一控制单元111可以被配置为通过PDSCH中的MAC CE信息激活/去激活多个semi-persistent ZP CSI-RS resource sets中的一个semi-persistent ZP CSI-RS resource set。
相应地，用户设备侧的电子装置300的第一控制单元311可以被配置为进行控制以通过基于波束的NTN通信从基站接收关于半静态资源的激活/去激活的信息。确定单元313被配置为确定UE应用半静态资源的激活/去激活信息的时间位置。第二控制单元315被配置为进行控制以在所确定的时间位置应用半静态资源的激活/去激活信息。
例如，参照图3，第一控制单元311进行控制以从基站接收由PDSCH的MAC CE承载的用于semi-persistent CSI-RS resource set的激活/去激活的信息。确定单元313被配置为基于该信息确定要激活/去激活的semi-persistent CSI-RS resource set ID以及semi-persistent CSI-RS resource set激活/去激活的时间位置。第二控制单元315被配置为进行控制以在到达确定单元313所确定的时间位置处应用semi-persistent CSI-RS resource set ID所指示的CSI-RS resource set的激活/去激活。
例如，参照图3，第一控制单元311进行控制以从基站接收由PDSCH的MAC CE承载的用于semi-persistent CSI-IM resource set的激活/去激活的信息。确定单元313被配置为基于该信息确定要激活/去激活的semi-persistent CSI-IM resource set ID以及semi-persistent CSI-IM resource set激活/去激活的时间位置。第二控制单元315被配置为进行控制以在到达确定单元313所确定的时间位置处应用semi-persistent CSI-IM resource set ID所指示的CSI-IM resource set的激活/去激活。
例如，参照图3，第一控制单元311进行控制以从基站接收由PDSCH的MAC CE承载的用于semi-persistent CSI report configuration in PUCCH的激活/去激活的信息。确定单元313被配置为基于该信息确定要激活/去激活的semi-persistent CSI report configuration in PUCCH以及semi-persistent CSI report configuration in PUCCH激活/去激活的时间位置。第二控制单元315被配置为进行控制以在到达确定单元313所 确定的时间位置处应用相应CSI report configuration in PUCCH的激活/去激活。
例如，参照图3，第一控制单元311进行控制以从基站接收由PDSCH的MAC CE承载的用于semi-persistent SRS resource set的激活/去激活的信息。确定单元313被配置为基于该信息确定要激活/去激活的semi-persistent SRS resource set ID以及semi-persistent SRS resource set激活/去激活的时间位置。第二控制单元315被配置为进行控制以在到达确定单元313所确定的时间位置处应用semi-persistent SRS resource set ID所指示的SRS resource set的激活/去激活。
例如，参照图3，第一控制单元311进行控制以从基站接收由PDSCH的MAC CE承载的用于semi-persistent ZP CSI-RS resource set的激活/去激活的信息。确定单元313被配置为基于该信息确定要激活/去激活的semi-persistent ZP CSI-RS resource set ID以及semi-persistent ZP CSI-RS resource set激活/去激活的时间位置。第二控制单元315被配置为进行控制以在到达确定单元313所确定的时间位置处应用semi-persistent ZP CSI-RS resource set ID所指示的ZP CSI-RS resource set的激活/去激活。
由第一控制单元311进行控制以从基站接收的信息可以包括要激活/去激活的半静态资源的信息，还可以包括由确定单元313用于确定时间位置的信息。例如，从基站接收的用于确定时间位置的信息可以包括应用半静态资源的激活/去激活信息的绝对时间位置的信息。
其中，半静态资源包括但不限于上述半静态零功率信道状态信息参考信号(semi-persistent ZP-CSI-RS)、半静态非零功率信道状态信息参考信号(semi-persistent CSI-RS)、半静态信道状态信息干扰测量(semi-persistent CSI-IM)、半静态信道状态信息上报(semi-persistent CSI reporting)、半静态探测参考信号(semi-persistent SRS)。
该方案可以用于NTN系统中没有HARQ机制或者没有HARQ-ACK反馈机制的情况。
作为一个示例，与图7所示的例子类似地，图11示出了基站以及用户设备侧在半静态资源的激活/去激活时的时序配置的示例的图。基站例如在MAC CE中加入UE应用半静态资源激活/去激活的绝对时间值，比 如T1，该绝对时间值由UE侧的确定单元313用于确定应用半静态资源激活/去激活的时间位置。具体地，UE根据接收到的要激活/去激活的半静态资源的信息和T1，在T1时刻应用半静态资源激活/去激活的信息。如前所述，该绝对时间值可以用各种时间形式表示，在该绝对时间值T1用slot number表示的情况下，UE例如在slot m处应用半静态资源激活/去激活的信息。
作为另一个示例，与图8所示的例子类似地，图12示出了基站以及用户设备侧在半静态资源的激活/去激活时的时序配置的另一示例的图。基站可以在MAC CE中加入发送该半静态资源激活/去激活信息的绝对时间值T0，或者该时间T0也可以是隐式的，比如由携带此MAC CE的PDSCH的时隙序号值(slot number)表示。UE会在接收到MAC CE之后的预定时长例如X ms或x个slot后应用此半静态资源激活/去激活的信息。该预定时长可以是某个预定义的值，这个值是基站和UE共知的，如16个slot、10毫秒等；也可以是基于某种算法计算出来的，比如根据卫星和用户之间的距离进行计算得到的。另外，X ms或者x个slot的值不局限于预定义的值，还可以是显性地配置的，比如如下之一：直接在DCI或者RRC或者MAC CE中指示；通过多种信令的组合方式指示；通过在某个已有的基准值如common TA上累加DCI或者RRC或者MAC CE中的指示值进行指示。
如图12的示例所示，UE在slot n收到指示半静态资源激活/去激活的MAC CE，然后在经过预定时长slot m后应用半静态资源激活/去激活的信息,因此，UE在slot n+m应用半静态资源激活/去激活的信息。
因此，示例性地，从基站接收的信息可以包括要激活/去激活的半静态资源的信息以及预定时长，并且确定单元313可以将从接收到该信息起经过该预定时长后的时间位置确定为应用半静态资源的激活/去激活的信息的时间位置。
作为另一个示例，与图9所示的例子类似地，基站侧的第一控制单元111向UE发送的信息可以包括半静态资源的激活/去激活信息以及第二时长，用于UE在从接收到该信息起经过该第二时长后的第二时间位置处应用半静态资源的激活/去激活信息。例如，基站在时刻T1发送包含激活的半静态资源信息的PDSCH，用户在T2收到包含激活的半静态资源信息的PDSCH，用户在T2+X时刻应用此半静态资源的激活信息。 在将时刻用时隙序号值来表示的情况下，上述时序可以描述为：基站在slot n发送包含激活的半静态资源信息的PDSCH，用户在slot n接收包含激活的半静态资源信息的PDSCH，用户在slot n+m时刻应用此半静态资源的激活信息。可以理解，这里的第二时长相当于图12的示例中的预定时长，有关描述同样适用，在此不再重复。
根据上述示例，即使在不存在针对包含半静态资源激活/去激活的PDSCH的HARQ的情况下，基站和UE也能够实现正确的应用半静态资源激活/去激活的时序，保证了基站和UE应用半静态资源激活/去激活的时间一致性。
另一方面，该方案也可以用于NTN系统中有HARQ-ACK反馈机制的情况。
图13示出了有HARQ-ACK反馈机制的情况下的半静态资源激活的一个示例。例如，基站发送PDSCH，其承载用于半静态资源激活的MAC CE。接下来，UE接收并解调该PDSCH，如果成功解调则向基站反馈ACK，如果未成功解调则向基站反馈NACK。UE可以在发送针对该PDSCH的HARQ-ACK信息的时隙之后预定时长比如Xms处或x个slot处应用此半静态资源激活/去激活的信息。该预定时长可以是某个预定义的值，这个值是基站和UE共知的；也可以是基于某种算法计算出来的，比如根据卫星和用户之间的距离进行计算得到的。另外，X ms或者x个slot的值不局限于预定义的值，还可以是显性地配置的，比如如下之一：直接在DCI或者RRC或者MAC CE中指示；通过多种信令的组合方式指示；通过在某个已有的基准值如common TA上累加DCI或者RRC或者MAC CE中的指示值进行指示。
示例性地，第一控制单元311还可以被配置为进行控制以向基站发送对信息的反馈，并且确定单元313可以基于反馈的发送时间以及预定时长确定应用半静态资源的激活/去激活的信息的时间位置。UE进行的反馈可以包括针对PDSCH的HARQ-ACK。
第一控制单元311可以被配置为针对携带波束切换信息的PDSCH使用单独的HARQ过程，或者将针对携带波束切换信息的PDSCH使用的HARQ过程设置为激活状态。相应地，基站为含有半静态资源激活/去激活信息的PDSCH单独配置HARQ过程，而不和其他的PDSCH一 起进行联合上报。或者，基站为含有半静态资源激活/去激活信息的PDSCH始终配置激活的HARQ。
针对半静态资源配置的上述实施例可以简要总结如下。
当没有针对携带半静态资源激活/去激活信息的PDSCH的HARQ过程时：可以通过基站发送半静态资源激活/去激活信息和绝对时间信息的方式，指示UE在什么时候应用半静态资源激活/去激活信息；可以通过基站发送半静态资源激活/去激活信息，约定UE在接收到半静态资源激活/去激活信息的预定时长比如X ms或x个slot后应用此半静态资源激活/去激活信息。
当有针对携带半静态资源激活/去激活信息的PDSCH的HARQ过程时：半静态资源激活/去激活的时序设计可以是基于HARQ-ACK的，即约定UE在发送针对包含半静态资源激活/去激活信息的PDSCH的HARQ-ACK后预定时长比如X ms或x个slot后应用半静态资源激活/去激活信息。此外，可以为携带半静态资源激活/去激活信息的PDSCH使用单独的特定的HARQ过程，或者可以使携带半静态资源激活/去激活信息的PDSCH的HARQ过程始终是启用或激活状态。
如前所述，本公开实施例可以更广泛地适用于由于时延而使得HARQ反馈机制不适用以及/或者基于HARQ反馈机制执行的通信配置操作不适用的任何场合，而不限于上述具体示例。例如，第一控制单元311被配置为进行控制以通过基于波束的非地面网络通信从基站接收关于所述通信配置操作的信息；确定单元313被配置为确定用户设备的通信配置操作的时间位置；以及第二控制单元315被配置为进行控制以在所确定的时间位置进行所述用户设备的通信配置操作。相应地，具体的操作将取决于要执行的通信配置操作而进行适应性的修改。
图4示出了UE侧的无线通信方法的过程示例。该方法包括通过基于波束的NTN通信从基站接收关于基站的波束切换的信息的步骤S410；确定UE的波束切换的时间位置的步骤S420；以及在所确定的时间位置进行UE的波束切换的步骤S430。
此外，本发明实施例还包括计算机可读介质，其包括可执行指令，当可执行指令被信息处理设备执行时，使得信息处理设备执行根据上述实施例的方法。
作为示例，上述方法的各个步骤以及上述装置的各个组成模块和/或单元可以实施为软件、固件、硬件或其组合。在通过软件或固件实现的情况下，可以从存储介质或网络向具有专用硬件结构的计算机(例如图14所示的通用计算机1400)安装构成用于实施上述方法的软件的程序，该计算机在安装有各种程序时，能够执行各种功能等。
在图14中，运算处理单元(即CPU)1401根据只读存储器(ROM)1402中存储的程序或从存储部分1408加载到随机存取存储器(RAM)1403的程序执行各种处理。在RAM 1403中，也根据需要存储当CPU 1401执行各种处理等等时所需的数据。CPU 1401、ROM 1402和RAM 1403经由总线1404彼此链路。输入/输出接口1405也链路到总线1404。
下述部件链路到输入/输出接口1405：输入部分1406(包括键盘、鼠标等等)、输出部分1407(包括显示器，比如阴极射线管(CRT)、液晶显示器(LCD)等，和扬声器等)、存储部分1408(包括硬盘等)、通信部分1409(包括网络接口卡比如LAN卡、调制解调器等)。通信部分1409经由网络比如因特网执行通信处理。根据需要，驱动器1410也可链路到输入/输出接口1405。可拆卸介质1411比如磁盘、光盘、磁光盘、半导体存储器等等根据需要被安装在驱动器1410上，使得从中读出的计算机程序根据需要被安装到存储部分1408中。
在通过软件实现上述系列处理的情况下，从网络比如因特网或存储介质比如可拆卸介质1411安装构成软件的程序。
本领域的技术人员应当理解，这种存储介质不局限于图14所示的其中存储有程序、与设备相分离地分发以向用户提供程序的可拆卸介质1411。可拆卸介质1411的例子包含磁盘(包含软盘(注册商标))、光盘(包含光盘只读存储器(CD-ROM)和数字通用盘(DVD))、磁光盘(包含迷你盘(MD)(注册商标))和半导体存储器。或者，存储介质可以是ROM 1402、存储部分1408中包含的硬盘等等，其中存有程序，并且与包含它们的设备一起被分发给用户。
本发明的实施例还涉及一种存储有机器可读取的指令代码的程序产品。所述指令代码由机器读取并执行时，可执行上述根据本发明实施例的方法。
相应地，用于承载上述存储有机器可读取的指令代码的程序产品的存储介质也包括在本发明的公开中。所述存储介质包括但不限于软盘、光盘、磁光盘、存储卡、存储棒等等。
本申请的实施例还涉及以下电子设备。在电子设备用于基站侧的情况下，电子设备可以被实现为任何类型的gNB或演进型节点B(eNB)，诸如宏eNB和小eNB。小eNB可以为覆盖比宏小区小的小区的eNB，诸如微微eNB、微eNB和家庭(毫微微)eNB。代替地，电子设备可以被实现为任何其他类型的基站，诸如NodeB和基站收发台(BTS)。电子设备可以包括：被配置为控制无线通信的主体(也称为基站设备)；以及设置在与主体不同的地方的一个或多个远程无线头端(RRH)。另外，下面将描述的各种类型的终端均可以通过暂时地或半持久性地执行基站功能而作为基站工作。
电子设备用于用户设备侧的情况下，可以被实现为移动终端(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端(诸如汽车导航设备)。此外，电子设备可以为安装在上述终端中的每个终端上的无线通信模块(诸如包括单个或多个晶片的集成电路模块)。
[关于终端设备的应用示例]
图15是示出可以应用本公开内容的技术的智能电话2500的示意性配置的示例的框图。智能电话2500包括处理器2501、存储器2502、存储装置2503、外部连接接口2504、摄像装置2506、传感器2507、麦克风2508、输入装置2509、显示装置2510、扬声器2511、无线通信接口2512、一个或多个天线开关2515、一个或多个天线2516、总线2517、电池2518以及辅助控制器2519。
处理器2501可以为例如CPU或片上系统(SoC)，并且控制智能电话2500的应用层和另外层的功能。存储器2502包括RAM和ROM，并且存储数据和由处理器2501执行的程序。存储装置2503可以包括存储介质，诸如半导体存储器和硬盘。外部连接接口2504为用于将外部装置(诸如存储卡和通用串行总线(USB)装置)连接至智能电话2500的接口。
摄像装置2506包括图像传感器(诸如电荷耦合器件(CCD)和互补金属氧化物半导体(CMOS))，并且生成捕获图像。传感器2507可以包括一组传感器，诸如测量传感器、陀螺仪传感器、地磁传感器和加速度传感器。麦克风2508将输入到智能电话2500的声音转换为音频信号。输入装置2509包括例如被配置为检测显示装置2510的屏幕上的触摸的触摸传感器、小键盘、键盘、按钮或开关，并且接收从用户输入的操作或信息。显示装置2510包括屏幕(诸如液晶显示器(LCD)和有机发光二极管(OLED)显示器)，并且显示智能电话2500的输出图像。扬声器2511将从智能电话2500输出的音频信号转换为声音。
无线通信接口2512支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口2512通常可以包括例如基带(BB)处理器2513和射频(RF)电路2514。BB处理器2513可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路2514可以包括例如混频器、滤波器和放大器，并且经由天线2516来传送和接收无线信号。无线通信接口2512可以为其上集成有BB处理器2513和RF电路2514的一个芯片模块。如图15所示，无线通信接口2512可以包括多个BB处理器2513和多个RF电路2514。虽然图15示出其中无线通信接口2512包括多个BB处理器2513和多个RF电路2514的示例，但是无线通信接口2512也可以包括单个BB处理器2513或单个RF电路2514。
此外，除了蜂窝通信方案之外，无线通信接口2512可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线局域网(LAN)方案。在此情况下，无线通信接口2512可以包括针对每种无线通信方案的BB处理器2513和RF电路2514。
天线开关2515中的每一个在包括在无线通信接口2512中的多个电路(例如用于不同的无线通信方案的电路)之间切换天线2516的连接目的地。
天线2516中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口2512传送和接收无线信号。如图15所示，智能电话2500可以包括多个天线2516。虽然图15示出其中智能电话2500包括多个天线2516的示例，但是智能电话2500也可以包括单个天线2516。
此外，智能电话2500可以包括针对每种无线通信方案的天线2516。在此情况下，天线开关2515可以从智能电话2500的配置中省略。
总线2517将处理器2501、存储器2502、存储装置2503、外部连接接口2504、摄像装置2506、传感器2507、麦克风2508、输入装置2509、显示装置2510、扬声器2511、无线通信接口2512以及辅助控制器2519彼此连接。电池2518经由馈线向图11所示的智能电话2500的各个块提供电力，馈线在图中被部分地示为虚线。辅助控制器2519例如在睡眠模式下操作智能电话2500的最小必需功能。
在图15所示的智能电话2500中，根据本发明实施例的用户设备侧的设备的收发装置可以由无线通信接口2512实现。根据本发明实施例的用户设备侧的电子装置或信息处理设备的处理电路和/或各单元的功能的至少一部分也可以由处理器2501或辅助控制器2519实现。例如，可以通过由辅助控制器2519执行处理器2501的部分功能而减少电池2518的电力消耗。此外，处理器2501或辅助控制器2519可以通过执行存储器2502或存储装置2503中存储的程序而执行根据本发明实施例的用户设备侧的电子装置或信息处理设备的处理电路和/或各单元的功能的至少一部分。
[关于基站的应用示例]
图16是示出可以应用本公开内容的技术的gNB的示意性配置的示例的框图。gNB 2300包括多个天线2310以及基站设备2320。基站设备2320和每个天线2310可以经由射频(RF)线缆彼此连接。
天线2310中的每一个均包括单个或多个天线元件(诸如包括在多输入多输出(MIMO)天线中的多个天线元件)，并且用于基站设备2320发送和接收无线信号。如图16所示，gNB 2300可以包括多个天线2310。例如，多个天线2310可以与gNB 2300使用的多个频带兼容。
基站设备2320包括控制器2321、存储器2322、网络接口2323以及无线通信接口2325。
控制器2321可以为例如CPU或DSP，并且操作基站设备2320的较高层的各种功能。例如，控制器2321根据由无线通信接口2325处理的 信号中的数据来生成数据分组，并经由网络接口2323来传递所生成的分组。控制器2321可以对来自多个基带处理器的数据进行捆绑以生成捆绑分组，并传递所生成的捆绑分组。控制器2321可以具有执行如下控制的逻辑功能：该控制诸如为无线资源控制、无线承载控制、移动性管理、接纳控制和调度。该控制可以结合附近的gNB或核心网节点来执行。存储器2322包括RAM和ROM，并且存储由控制器2321执行的程序和各种类型的控制数据(诸如终端列表、传输功率数据以及调度数据)。
网络接口2323为用于将基站设备2320连接至核心网2324的通信接口。控制器2321可以经由网络接口2323而与核心网节点或另外的gNB进行通信。在此情况下，gNB 2300与核心网节点或其他gNB可以通过逻辑接口(诸如S1接口和X2接口)而彼此连接。网络接口2323还可以为有线通信接口或用于无线回程线路的无线通信接口。如果网络接口2323为无线通信接口，则与由无线通信接口2325使用的频带相比，网络接口2323可以使用较高频带用于无线通信。
无线通信接口2325支持任何蜂窝通信方案(诸如长期演进(LTE)和LTE-先进)，并且经由天线2310来提供到位于gNB 2300的小区中的终端的无线连接。无线通信接口2325通常可以包括例如BB处理器2326和RF电路2327。BB处理器2326可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行层(例如L1、介质访问控制(MAC)、无线链路控制(RLC)和分组数据汇聚协议(PDCP))的各种类型的信号处理。代替控制器2321，BB处理器2326可以具有上述逻辑功能的一部分或全部。BB处理器2326可以为存储通信控制程序的存储器，或者为包括被配置为执行程序的处理器和相关电路的模块。更新程序可以使BB处理器2326的功能改变。该模块可以为插入到基站设备2320的槽中的卡或刀片。可替代地，该模块也可以为安装在卡或刀片上的芯片。同时，RF电路2327可以包括例如混频器、滤波器和放大器，并且经由天线2310来传送和接收无线信号。
如图16所示，无线通信接口2325可以包括多个BB处理器2326。例如，多个BB处理器2326可以与gNB 2300使用的多个频带兼容。如图16所示，无线通信接口2325可以包括多个RF电路2327。例如，多个RF电路2327可以与多个天线元件兼容。虽然图16示出其中无线通信接口2325包括多个BB处理器2326和多个RF电路2327的示例，但 是无线通信接口2325也可以包括单个BB处理器2326或单个RF电路2327。
在图16所示的gNB 2300中，基站侧的无线通信设备的收发装置可以由无线通信接口2325实现。基站侧的电子装置或无线通信设备的处理电路和/或各单元的功能的至少一部分也可以由控制器2321实现。例如，控制器2321可以通过执行存储在存储器2322中的程序而执行基站侧的电子装置或无线通信设备的处理电路和/或各单元的功能的至少一部分。
在上面对本发明具体实施例的描述中，针对一种实施方式描述和/或示出的特征可以用相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、要素、步骤或组件的存在，但并不排除一个或更多个其它特征、要素、步骤或组件的存在或附加。
在上述实施例和示例中，采用了数字组成的附图标记来表示各个步骤和/或单元。本领域的普通技术人员应理解，这些附图标记只是为了便于叙述和绘图，而并非表示其顺序或任何其他限定。
此外，本发明的方法不限于按照说明书中描述的时间顺序来执行，也可以按照其他的时间顺序地、并行地或独立地执行。因此，本说明书中描述的方法的执行顺序不对本发明的技术范围构成限制。
尽管上面已经通过对本发明的具体实施例的描述对本发明进行了披露，但是，应该理解，上述的所有实施例和示例均是示例性的，而非限制性的。本领域的技术人员可在所附权利要求的精神和范围内设计对本发明的各种修改、改进或者等同物。这些修改、改进或者等同物也应当被认为包括在本发明的保护范围内。

Claims (29)

  1. 一种用于无线通信的电子装置，其包括处理电路，所述处理电路被配置为：
    进行控制以通过基于波束的非地面网络通信向用户设备发送关于基站的波束切换的信息；
    确定所述波束切换的时间或空间位置；以及
    进行控制以在到达所确定的时间或空间位置时进行所述波束切换。
  2. 根据权利要求1所述的电子装置，其中，向所述用户设备发送的所述信息包括所述基站要切换至的波束以及所确定的时间或空间位置。
  3. 根据权利要求1所述的电子装置，其中，所述处理电路被配置为确定所述波束切换的时间位置，所述时间位置被确定为从发出所述信息起经过第一时长后的第一时间位置；并且
    向所述用户设备发送的所述信息包括所述基站要切换至的波束以及第二时长，用于所述用户设备在从接收到所述信息起经过所述第二时长后的第二时间位置进行所述用户设备的波束切换。
  4. 根据权利要求3所述的电子装置，其中，所述处理电路被配置为：
    在从所述信息的发出到所述基站的波束切换之间的时段的至少一部分中，同时使用切换源波束和切换目标波束两者进行与所述用户设备的通信。
  5. 根据权利要求4所述的电子装置，其中，所述第一时长和所述第二时长被设置为使得所述第二时间位置晚于所述第一时间位置。
  6. 根据权利要求1所述的电子装置，其中，所述处理电路被配置为确定所述波束切换的空间位置，并且
    所述处理电路还被配置为进行控制以广播关于卫星星历图或卫星轨迹图的信息。
  7. 根据权利要求1至6中任一项所述的电子装置，其中，所述处理电路被配置为通过物理下行控制信道PDCCH或物理下行共享信道PDSCH中的关于空间共位关系的指示信息来指示所述基站要切换至的 波束或者指示所述用户设备要切换至的波束。
  8. 根据权利要求1所述的电子装置，所述处理电路还被配置为进行控制以接收所述用户设备针对所述信息的反馈，并且
    所述处理电路被配置为基于所述反馈的发送时间确定所述基站的波束切换的时间位置。
  9. 根据权利要求8所述的电子装置，其中，向所述用户设备发送的所述信息还包括所述基站与所述用户设备之间的距离。
  10. 根据权利要求8所述的电子装置，其中，所述反馈包括针对物理下行共享信道PDSCH的混合自动重传确认。
  11. 根据权利要求10所述的电子装置，其中，所述处理电路被配置为：针对携带所述信息的PDSCH进行单独的混合自动重传过程。
  12. 根据权利要求10所述的电子装置，其中，所述处理电路被配置为：将携带所述信息的PDSCH所使用的混合自动重传过程设置为激活状态。
  13. 一种无线通信方法，包括：
    通过基于波束的非地面网络通信向用户设备发送关于基站的波束切换的信息；
    确定所述波束切换的时间或空间位置；以及
    在到达所确定的时间或空间位置时进行所述波束切换。
  14. 一种用于无线通信的电子装置，其包括处理电路，所述处理电路被配置为：
    进行控制以通过基于波束的非地面网络通信从基站接收关于所述基站的波束切换的信息；
    确定用户设备的波束切换的时间位置；以及
    进行控制以在所确定的时间位置进行所述用户设备的波束切换。
  15. 根据权利要求14所述的电子装置，其中，从所述基站接收的所述信息包括所述基站要切换至的波束以及所述基站的波束切换的时间位置，并且
    所述确定包括将所述基站的波束切换的时间位置确定为所述用户设备的波束切换的时间位置。
  16. 根据权利要求14所述的电子装置，其中，从所述基站接收的所述信息包括所述基站要切换至的波束以及时长，并且
    所述确定包括将从接收到所述信息起经过所述时长后的时间位置确定为所述用户设备的波束切换的时间位置。
  17. 根据权利要求14所述的电子装置，其中，从所述基站接收的所述信息包括所述基站要切换至的波束、所述基站的波束切换的空间位置以及关于卫星星历图或卫星轨迹图的信息，并且
    所述确定包括基于从所述基站接收的信息确定所述用户设备的波束切换的时间位置。
  18. 根据权利要求14所述的电子装置，所述处理电路还被配置为：
    进行控制以向所述基站发送对所述信息的反馈；以及
    基于所述反馈的发送时间以及所述用户设备与所述基站之间的距离确定所述用户设备的波束切换的时间位置。
  19. 根据权利要求18所述的电子装置，所述处理电路还被配置为：
    确定所述用户设备与所述基站之间的距离；或者
    进行控制以从所述基站接收指示所述用户设备与所述基站之间的距离的信息。
  20. 根据权利要求18所述的电子装置，其中，所述反馈包括针对物理下行共享信道PDSCH的混合自动重传确认。
  21. 根据权利要求20所述的电子装置，其中，所述处理电路被配置为：针对携带所述信息的PDSCH使用单独的混合自动重传过程。
  22. 根据权利要求20所述的电子装置，其中，所述处理电路被配置为：将针对携带所述信息的PDSCH使用的混合自动重传过程设置为激活状态。
  23. 一种无线通信方法，包括：
    通过基于波束的非地面网络通信从基站接收关于所述基站的波束切 换的信息；
    确定用户设备的波束切换的时间位置；以及
    在所确定的时间位置进行所述用户设备的波束切换。
  24. 一种用于无线通信的电子装置，包括：
    处理电路，被配置为：
    进行控制以通过基于波束的非地面网络通信从基站接收关于半静态资源的激活/去激活的信息；
    确定用户设备应用所述半静态资源的激活/去激活信息的时间位置；以及
    进行控制以在所确定的时间位置应用所述半静态资源的激活/去激活信息。
  25. 根据权利要求24所述的电子装置，其中，从所述基站接收的所述信息包括要激活/去激活的半静态资源的信息以及应用半静态资源的激活/去激活信息的时间位置的信息。
  26. 根据权利要求24所述的电子装置，其中，从所述基站接收的所述信息包括要激活/去激活的半静态资源的信息以及应用所述半静态资源的激活/去激活的信息的绝对时间值，所述处理电路将所述绝对时间值确定为应用半静态资源的激活/去激活的信息的时间位置。
  27. 根据权利要求24所述的电子装置，其中，从所述基站接收的所述信息包括要激活/去激活的半静态资源的信息以及预定时长，所述处理电路将从接收到所述信息起经过该预定时长后的时间位置确定为应用半静态资源的激活/去激活的信息的时间位置。
  28. 根据权利要求24所述的电子装置，其中，所述处理电路被配置为进行控制以向基站发送对所述信息的反馈，且基于反馈的发送时间以及预定时长确定应用半静态资源的激活/去激活的信息的时间位置。
  29. 一种计算机可读介质，其包括可执行指令，当所述可执行指令被信息处理设备执行时，使得所述信息处理设备执行根据权利要求13或23所述的方法。
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