WO2020029275A1 - 一种无线通信方法、终端设备和网络设备 - Google Patents

一种无线通信方法、终端设备和网络设备 Download PDF

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Publication number
WO2020029275A1
WO2020029275A1 PCT/CN2018/100051 CN2018100051W WO2020029275A1 WO 2020029275 A1 WO2020029275 A1 WO 2020029275A1 CN 2018100051 W CN2018100051 W CN 2018100051W WO 2020029275 A1 WO2020029275 A1 WO 2020029275A1
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WIPO (PCT)
Prior art keywords
base station
terminal device
target base
information
downlink beam
Prior art date
Application number
PCT/CN2018/100051
Other languages
English (en)
French (fr)
Inventor
尤心
王淑坤
杨宁
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2018/100051 priority Critical patent/WO2020029275A1/zh
Priority to EP18929814.4A priority patent/EP3829206A4/en
Priority to CN201880096248.9A priority patent/CN112534856A/zh
Priority to KR1020217007064A priority patent/KR20210042951A/ko
Priority to AU2018436336A priority patent/AU2018436336A1/en
Priority to TW108128383A priority patent/TW202014029A/zh
Publication of WO2020029275A1 publication Critical patent/WO2020029275A1/zh
Priority to US17/163,085 priority patent/US20210153084A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • 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
    • 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
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node
    • 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
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • Embodiments of the present application relate to the field of communications, and in particular, to a wireless communication method, a terminal device, and a network device.
  • LTE Long Term Evolution
  • random access is mainly to enable the terminal device to achieve uplink synchronization with the target base station.
  • NR new Radio
  • 5G system, 5G network the delay of random access during the handover process is large.
  • Embodiments of the present application provide a wireless communication method, a terminal device, and a network device, which can establish a downlink connection between a target base station and a terminal device in a short period of time.
  • a wireless communication method is provided.
  • the method is used in a handover process without random access.
  • the method includes: a terminal device sending first information to a network side, where the first information includes a target base station's Index information corresponding to a first downlink beam, and the first downlink beam is used for downlink communication between the target base station and the terminal device.
  • a wireless communication method is provided.
  • the method is used in a handover process without random access.
  • the method includes: receiving, by a network side, first information sent by a terminal device, where the first information includes a target base station.
  • a terminal device is provided to execute the method in the first aspect or the implementations thereof.
  • the terminal device includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.
  • a network device for executing the method in the second aspect or the implementation manners thereof.
  • the network device includes a function module for executing the method in the second aspect or the implementations thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, and execute the method in the above-mentioned first aspect or its implementations.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or the implementations thereof.
  • a chip is provided for implementing any one of the first to second aspects or a method in each implementation thereof.
  • the chip includes a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes any one of the first aspect to the second aspect described above or implementations thereof. method.
  • a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the first to second aspects described above or in its implementations.
  • a computer program product including computer program instructions that cause a computer to execute the method in any one of the first to second aspects described above or in various implementations thereof.
  • a computer program that, when run on a computer, causes the computer to execute the method in any one of the first to second aspects described above or in its implementations.
  • the terminal device can send the index information corresponding to the downlink beam to the network side.
  • the target base station can determine the downlink beam used for downlink communication with the terminal device.
  • the target base station can establish a downlink connection between the target base station and the terminal device in a short time.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a flowchart of a handover according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a chip according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System for Mobile
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or a communication terminal or a terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device may be a mobile switching center, relay station, access point, vehicle equipment, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in public land mobile networks (PLMN) that will evolve in the future.
  • PLMN public land mobile networks
  • the communication system 100 further includes at least one terminal device 120 located within a coverage area of the network device 110.
  • terminal equipment used herein includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection ; And / or another data connection / network; and / or via a wireless interface, such as for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) devices.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN Wireless Local Area Networks
  • DVB-H Digital Video Broadband
  • satellite networks satellite networks
  • AM- FM broadcast transmitter AM- FM broadcast transmitter
  • IoT Internet of Things
  • a terminal device configured to communicate through a wireless interface may be referred to as a “wireless communication terminal”, a “wireless terminal”, or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; personal communications systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communications capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS personal communications systems
  • GPS Global Positioning System
  • a terminal device can refer to an access terminal, user equipment (User Equipment), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Processing (PDA), and wireless communication.
  • terminal devices 120 may perform terminal direct device (D2D) communication.
  • D2D terminal direct device
  • the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
  • NR New Radio
  • FIG. 2 is a flowchart of a handover to which an embodiment of the present application can be applied. The following describes the entire handover process with reference to FIG. 2. It can be seen that the handover process may include three stages.
  • the first stage, preparation for switching (201 ⁇ 205)
  • the source base station triggers the terminal device to perform neighboring cell measurement, so that the terminal device can measure the neighboring cell and report the measurement result to the source base station.
  • the source base station evaluates the measurement results reported by the terminal device and decides whether to trigger a handover.
  • the source base station may send a handover request to the target base station.
  • the target base station may start admission based on the service information carried by the source base station and perform radio resource configuration.
  • the target base station sends a handover request confirmation message to the source base station, and returns the admission result and radio resource configuration information in the target base station to the source base station. At this point, the handover preparation phase is complete.
  • the second stage, switching execution (206 ⁇ 208)
  • the source base station may trigger the terminal device to perform handover.
  • the source base station may forward the buffered data, the data packet being transmitted, and the system serial number of the data to the target base station. And, the target base station can buffer the data received from the source base station
  • the terminal device can disconnect from the source base station and establish synchronization with the target base station.
  • the terminal device is synchronized to the target base station. At this point, the switching execution phase is complete.
  • the third stage is completed (209 ⁇ 212)
  • the target base station sends a path switching request to the mobility management function (Access and Mobility Management Function, AMF).
  • AMF Access and Mobility Management Function
  • the AMF after receiving the path switching request of the target base station, the AMF performs path switching with a user plane function (User Plane Function, UPF), and clears the path flag of the user plane of the source base station.
  • UPF User Plane Function
  • the AMF may send a path switching confirmation message to the target base station.
  • the target base station sends a terminal device context release message to the source base station, notifying the source base station that the handover was successful, and triggering the source base station terminal device context. At this point, the switch is complete.
  • FIG. 3 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application.
  • the method 300 includes at least a part of the following content.
  • the terminal device sends first information to the network side, where the first information includes index information corresponding to a first downlink beam of the target base station, and the first downlink beam is used for downlink between the target base station and the terminal device. Communication.
  • one downlink beam may correspond to one reference signal, and the index of the downlink beam may correspond to the index of the reference signal one-to-one.
  • the index corresponding to the first downlink beam is the synchronization signal block (SSB) or channel state information reference signal carried on the first downlink beam (Channel State Information-Reference Signal, CSI-RS) index.
  • SSB synchronization signal block
  • CSI-RS Channel State Information-Reference Signal
  • the first information includes index information corresponding to the first downlink beam of the target base station, which can be understood as: the first information includes only index information corresponding to the first downlink beam; or the first information includes only the target base station Index information corresponding to at least one downlink beam, at least one downlink beam includes a first downlink beam; or, the first information includes index information corresponding to at least one downlink beam of at least one base station, at least one base station includes a target base station, and at least one downlink The beam includes a first downlink beam.
  • the terminal device may send the first information to the network side in the following ways:
  • the first information may be carried in a radio resource control (Radio Resource Control, RRC) connection reconfiguration complete message during a handover process.
  • RRC Radio Resource Control
  • This method can be applied in 208.
  • the terminal device implements uplink synchronization with the target base station and sends an RRC connection reconfiguration completion message to the target base station, the terminal device can carry the first information in the RRC connection reconfiguration completion message.
  • the first information may be carried in a Media Access Control (MAC) control unit (CE) or uplink control information (Uplink Control Information (UCI)).
  • MAC Media Access Control
  • CE control unit
  • UCI Uplink Control Information
  • the terminal device may carry the first information in an uplink data packet, and send the first information to the network side through MAC, CE, or UCI.
  • the MAC CE or UCI may carry the first information in a protocol (Internet Protocol) packet interconnected between networks.
  • the terminal device may carry the first information in the data packet in any step of sending a data packet to the target base station. For example, in any step after 208, if the terminal device sends a data packet to the target base station, the terminal device may carry the first information in the data packet.
  • the terminal device may select a first downlink beam from measurement results of at least one downlink beam of the target base station, and then include an index corresponding to the first downlink beam to include Send in the first message.
  • the selecting, by the terminal device, the first downlink beam from the measurement results of at least one downlink beam of the target base station may include: performing, by the terminal device, channel quality measurement on the at least one downlink beam of the target base station to obtain a measurement result, According to the measurement result, a first downlink beam is selected from the at least one downlink beam.
  • the measurement of the beam by the terminal device can be understood as: the terminal device measures the SSB or CSI-RS carried on the beam.
  • the terminal device performing channel quality measurement on at least one downlink beam of the target base station may include: the terminal device measures SSB or CSI-RS carried on each downlink beam of the target base station.
  • the terminal device performing channel quality measurement on at least one downlink beam of the target base station may specifically include: After the source base station triggers the terminal device to perform neighbor cell measurement, the terminal device may perform measurement based on the measurement configuration information sent by the source base station. Downlink beams in neighboring cells are used for channel quality measurement (for example, this process may correspond to 201).
  • the measurement configuration information may include a measurement frequency list, a cell list corresponding to each frequency, and a measurement amount.
  • the measurement quantity may include, but is not limited to, reference signal received power (RSRP), reference signal received quality (RSRQ), and signal-to-interference-and-noise ratio of the reference signal (reference-signal- signal to interference plus noise ratio (RS-SINR)
  • RSRP reference signal received power
  • RSSQ reference signal received quality
  • RSS-SINR signal-to-interference-and-noise ratio of the reference signal
  • the terminal device After the terminal device measures the downlink beam of the neighboring cell, it may report the measurement result to the source base station.
  • the measurement result includes the measurement result of at least one downlink beam of at least one base station including the target base station (for example, the process may correspond to 201). .
  • the source base station After receiving the measurement result sent by the terminal device, the source base station determines the target base station according to the measurement result. After that, the target base station may send a handover request. After the target base station sends a handover request response message to the source base station, the source base station may send an RRC connection reconfiguration message to the terminal device to notify the terminal device to perform the handover. After receiving the RRC connection reconfiguration message, the terminal device may determine the target base station (for example, the process may correspond to 206). After that, the terminal device may select a measurement result of the at least one downlink beam of the target base station among the measurement results of the at least one downlink beam of the at least one base station.
  • the terminal device may compare the measurement result of the at least one downlink beam of the target base station with a threshold value when the target base station performs beam selection, and according to the comparison, As a result, the first downlink beam is selected.
  • the terminal device may compare the measurement result of the SSB or CSI-RS carried on at least one downlink beam of the target base station with a threshold.
  • the threshold may be preset or determined according to signaling.
  • the threshold may be preset on the terminal device, or may be preset on the network side.
  • the threshold may be determined by the terminal device.
  • the terminal device sends information including the threshold to the network side. After receiving the information, the network side can obtain the threshold.
  • the threshold may be determined by the network side.
  • the network side may send second information to the terminal device, where the second information may be used to indicate a target beam list to be measured, And / or, the threshold.
  • the terminal device may select a beam of the target base station based on the threshold.
  • the second information may be carried in an RRC connection reconfiguration message (for example, it may correspond to 206). If the second information is carried in the RRC connection reconfiguration message, after receiving the RRC connection reconfiguration message, the terminal device may select at least one of the target base stations from the at least one downlink beam of the at least one base station based on the beam list that the target base station needs to measure. Downward beam.
  • the second information may be carried in the measurement configuration information (for example, may correspond to 201). If the second information is carried in the measurement configuration information, after receiving the measurement configuration information, the terminal device can measure the downlink beam of the target base station based on the list of beams that the target base station needs to measure.
  • the terminal device may compare the threshold value with a measurement result of at least one downlink beam of the target base station, and then according to the comparison result, the terminal device may select the first downlink beam.
  • the terminal device may select, as the first downlink beam, a downlink beam whose measurement result of at least one downlink beam of the target base station is greater than a threshold.
  • the terminal device may randomly select one downlink beam as the first downlink beam.
  • the terminal device may also use other implementation manners to select the first downlink beam from multiple downlink beams whose measurement results are greater than the threshold, which is not specifically limited in this embodiment of the present application. For example, among a plurality of downlink beams whose measurement results are greater than a threshold, the terminal device may select the downlink beam with the least traffic as the first downlink beam.
  • the terminal device After the terminal device selects the measurement result of at least one downlink beam of the target base station, as another example, the terminal device may select the downlink beam with the strongest signal strength as the first downlink according to the measurement result of the at least one downlink beam of the target base station. Beam.
  • the signal strength may include, but is not limited to, the power, voltage, or amplitude of the signal.
  • the terminal device may select the first downlink beam according to at least one of a channel quality indicator (Channel Quality Indicator (CQI), RSRP, RSRQ, and rank indication (RI) of at least one downlink beam of the target base station.
  • CQI Channel Quality Indicator
  • RSRP RSRP
  • RSRQ RSRQ
  • RI rank indication
  • the terminal device may select the downlink beam corresponding to the CQI with the largest value as the first downlink beam.
  • the terminal device may send a measurement result of at least one downlink beam of the target base station to the target base station.
  • the target base station After the target base station receives the measurement result, it may A first downlink beam is selected from a measurement result of at least one downlink beam of the target base station.
  • the terminal device may also select the first downlink beam from the measurement results of at least one downlink beam of the target base station according to the measurement results.
  • the target base station and the terminal device may select the first downlink beam according to a measurement result based on a preset rule.
  • the preset rule may be preset or determined according to signaling.
  • the preset rule may be preset on the terminal device and the target base station.
  • the preset rule may be preset on a terminal device, and the terminal device sends information including the preset rule to the target base station.
  • the information including the preset rule may be carried in an RRC reconfiguration complete message, or may be carried in a MAC CE or UCI.
  • the preset rule may be preset on the target base station, and the target base station may send information including the preset rule to the terminal device before the terminal device selects the first downlink beam.
  • the preset rule may be determined by the terminal device, and the terminal device sends information including the preset rule to the target base station.
  • the preset rule may be determined by the target base station, and the target base station sends information including the preset rule to the terminal device.
  • the terminal device may send a measurement result of at least one downlink beam of the at least one base station to the target base station.
  • the target base station may select at least one downlink beam of the target base station from at least one downlink beam of the at least one base station.
  • the target base station may select a first downlink beam from at least one downlink beam of the target base station according to the measurement result.
  • the terminal device may also use the same method as the target base station to select a first downlink beam from at least one downlink beam of the target base station.
  • Method 3 The first information may be carried in a measurement report sent by the terminal device to the source base station.
  • the measurement report may include a measurement report of a neighboring cell.
  • the base station corresponding to the neighboring cell includes a target base station.
  • the first information may include index information of at least one downlink beam of at least one base station.
  • the at least one base station includes a target base station and at least one downlink beam. Including a first downlink beam.
  • the source base station may select a first downlink beam among at least one downlink beam of at least one base station according to the measurement report, and then the source base station may send index information corresponding to the first downlink beam. To the target base station.
  • the source base station may select at least one downlink beam with a measurement value greater than a threshold value from at least one downlink beam of at least one base station according to the measurement result, and the at least one downlink beam corresponds to at least one base station,
  • the at least one downlink beam includes a first downlink beam.
  • the source base station may send the index information corresponding to the at least one downlink beam and the measurement result of the at least one downlink beam to the target base station.
  • the target base station may select a first downlink beam according to the measurement result.
  • the source base station may select at least one downlink beam of the target base station from at least one downlink beam of the at least one base station, and then, the source base station may index the corresponding at least one downlink beam of the target base station.
  • the information and the measurement result of at least one downlink beam of the target base station are sent to the target base station.
  • the target base station may select the first downlink beam according to the measurement result.
  • the source base station may resend the measurement report to the target base station. After receiving the measurement report, the source base station may select the first downlink beam according to the measurement result.
  • the terminal device may select a first downlink beam from at least one downlink beam according to a measurement result.
  • the terminal device may determine the target base station after receiving the RRC connection reconfiguration message sent by the source base station. After the target base station is determined, the terminal device may select a first downlink beam from at least one downlink beam of the target base station. After that, the terminal device may perform downlink communication with the target base station by using the first downlink beam.
  • the method may further include: receiving, by the terminal device, a timing adjustment (TA) and / or an uplink grant of the target base station sent by the network side.
  • TA timing adjustment
  • the TA can be used to implement uplink synchronization between the terminal device and the target base station, and the uplink authorization can be used to instruct the terminal device to perform time-frequency resources for uplink transmission.
  • the TA and / or uplink grant may be forwarded to the terminal device via the source base station.
  • the target base station may send a TA and / or uplink grant to the source base station, and after receiving the TA and / or uplink grant, the source base station may send the TA and / or uplink grant to the terminal device.
  • the time for transmitting the first information between the terminal device and the target base station is later than the time for transmitting the TA and / or the uplink authorization between the terminal device and the source base station.
  • the terminal device may send the first information to the target base station in 208.
  • the first information may be carried in the RRC connection reconfiguration completion message; or, the terminal device may send the target base station after 208. Send the first information.
  • the first information may be carried in the MAC CE or UCI.
  • the TA and / or the uplink grant may be sent by the target base station to the terminal device.
  • the time for transmitting the first information between the terminal device and the source base station is earlier than the time for transmitting the TA and / or uplink authorization between the terminal device and the target base station.
  • the terminal device may send the first information to the source base station in 201.
  • the first message may be carried in a measurement report sent by the terminal device to the source base station.
  • the TA and / or uplink grant may be carried in an RRC connection reconfiguration message.
  • the TA and / or uplink grant can be carried on a physical downlink control channel (Physical Downlink Control Channel, PDCCH), an enhanced physical downlink control channel (Enhanced Physical Downlink Control Channel, EPDCCH), or a machine type communication physical downlink control channel (Machine Type). Communication (Downlink Control Channel, MPDCCH), Physical Sidelink Control Channel (PSCCH), or Narrowband Physical Downlink Control Channel (NPDCCH).
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • Machine Type machine type communication physical downlink control channel
  • MPDCCH Physical Sidelink Control Channel
  • NPDCCH Narrowband Physical Downlink Control Channel
  • the terminal device After receiving the TA and / or uplink grant from the target base station, the terminal device can implement uplink synchronization with the target base station. In addition, the terminal device can obtain uplink resources based on the uplink authorization, thereby implementing uplink transmission between the terminal device and the target base station.
  • the network device receives the first information sent by the terminal device.
  • the target base station can determine a first downlink beam used for downlink communication with the terminal device, so that the first downlink beam can be used for downlink communication with the terminal device.
  • the terminal device may send index information including a downlink beam corresponding to the network side, and after the network device receives the index information corresponding to the downlink beam, the target base station may determine a downlink beam used for downlink communication with the terminal device.
  • the target base station can establish a downlink connection between the target base station and the terminal device in a short time.
  • the size of the sequence numbers of the above processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the wireless communication method according to the embodiment of the present application is described in detail above.
  • the wireless communication device according to the embodiment of the present application will be described below with reference to FIGS. 4 to 6.
  • the technical features described in the method embodiment are applicable to the following device embodiments.
  • FIG. 4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the communication unit 410 is configured to send first information to the network side, where the first information includes index information corresponding to a first downlink beam of the target base station, and the first downlink beam is used for downlink between the target base station and the terminal device 400 Communication.
  • the first information is carried in an RRC connection reconfiguration completion message during a handover process.
  • the first information is carried in a MAC CE or UCI.
  • the terminal device 400 further includes: a processing unit 420, configured to select a first downlink beam from a measurement result of at least one beam of the target base station, for The index corresponding to the horizontal beam is included in the first information.
  • a processing unit 420 configured to select a first downlink beam from a measurement result of at least one beam of the target base station, for The index corresponding to the horizontal beam is included in the first information.
  • the first information is carried in a measurement report sent to the source base station, where the measurement report includes a measurement report of a neighboring cell, a base station corresponding to the neighboring cell includes a target base station, and the first information includes a target Index information corresponding to at least one downlink beam of the base station, and the at least one downlink beam includes a first downlink beam.
  • the terminal device 400 further includes: a processing unit 420, configured to select, from the at least one downlink beam, a first downlink signal for downlink communication with the target base station after the target base station is determined. Traveling beam
  • the communication unit 410 is further configured to perform downlink communication with the target base station by using the first downlink beam.
  • the index corresponding to the first downlink beam is an index of a synchronization signal block SSB or a channel state information reference signal CSI-RS carried on the first downlink beam.
  • the communication unit 410 is further configured to: receive the target base station time adjustment amount TA and / or uplink grant sent by the network side; and perform uplink communication with the target base station based on the TA and / or uplink grant .
  • the TA and / or uplink authorization of the target base station is forwarded to the terminal device 400 via the source base station.
  • the time for transmitting the first information with the network side is later than the time for transmitting the TA and / or the uplink authorization with the network side.
  • the TA and / or uplink grant of the target base station is carried in an RRC connection reconfiguration message or a physical downlink control channel PDCCH.
  • the communication unit 410 is further configured to receive second information sent by the network side, where the second information is used to indicate a list of beams to be measured by the target base station and / or to the target base station. Threshold when performing beam selection.
  • the terminal device 400 further includes: a processing unit 420, configured to measure and / or select a beam of the target base station based on the list and / or the threshold.
  • a processing unit 420 configured to measure and / or select a beam of the target base station based on the list and / or the threshold.
  • terminal device 400 may correspond to the terminal device in the method 300, and corresponding operations of the terminal device in the method 300 may be implemented. For brevity, details are not described herein again.
  • FIG. 5 shows a schematic block diagram of a network device 500 according to an embodiment of the present application.
  • the network device 500 includes:
  • the communication unit 510 is configured to receive first information sent by the terminal device, where the first information includes index information corresponding to a first downlink beam of the target base station, and the first downlink beam is used for downlink communication between the target base station and the terminal device. .
  • the first information is carried in an RRC connection-free reconfiguration complete message during a handover process.
  • the first information is carried in a MAC CE or an upper UCI.
  • the first information is carried in a measurement report received from a source base station, where the measurement report includes a measurement report of a neighboring cell, a base station corresponding to the neighboring cell includes a target base station, and the first information includes a target Index information of at least one downlink beam of the base station, and the at least one downlink beam includes a first downlink beam.
  • the network device 500 when the network device 500 is a target base station, the network device 500 further includes: a processing unit 510, configured to select a first downlink beam from at least one downlink beam;
  • the communication unit 510 is further configured to perform downlink communication with the terminal device by using the first downlink beam.
  • the communication unit 510 of the network device 500 is further configured to: send the time adjustment amount TA and / or uplink authorization of the target base station to the terminal device; when the network device 500 is the target base station, the communication unit 510 is further configured to: Or uplink authorization to perform uplink communication with the terminal device.
  • the TA and / or uplink authorization of the target base station is forwarded to the terminal device via the source base station.
  • the time for transmitting the first information between the terminal device and the network device 500 is later than the time for transmitting the TA and / or uplink authorization between the terminal device and the network device 500.
  • the TA and / or uplink grant of the target base station is carried in an RRC connection reconfiguration message or a physical downlink control channel PDCCH.
  • the communication unit 510 is further configured to send second information to a terminal device, where the second information is used to indicate a target base station that needs to be measured.
  • the network device 500 may correspond to the network device in the method 300, and corresponding operations of the network device in the method 300 may be implemented. For brevity, details are not described herein again.
  • FIG. 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be the network device in the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method in the embodiment of the present application. For brevity, details are not described herein again. .
  • the communication device 600 may specifically be a terminal device in the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the terminal device in each method in the embodiments of the present application. For brevity, details are not described herein again. .
  • FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 may control the input interface 730 to communicate with other devices or chips. Specifically, the processor 710 may obtain information or data sent by the other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 may control the output interface 740 to communicate with other devices or chips. Specifically, the processor 710 may output information or data to the other devices or chips.
  • the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability.
  • each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field, Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchrobus RAM Direct Rambus RAM, DR RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct RAMbus RAM, DR RAM) and so on. That is, the memories in the embodiments of the present application are intended to include, but not limited to, these and any other suitable types of memories.
  • FIG. 8 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. As shown in FIG. 8, the communication system 800 includes a terminal device 810 and a network device 820.
  • the terminal device 810 may be used to implement the corresponding functions implemented by the terminal device in the foregoing method
  • the network device 820 may be used to implement the corresponding functions implemented by the network device in the foregoing method. For brevity, details are not repeated here. .
  • An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For simplicity, here No longer.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. No longer.
  • An embodiment of the present application further provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. More details.
  • the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instruction causes a computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. More details.
  • the embodiment of the present application also provides a computer program.
  • the computer program may be applied to the terminal device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. , Will not repeat them here.
  • the computer program may be applied to a network device in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. , Will not repeat them here.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .

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Abstract

本申请实施例涉及一种无线通信方法、终端设备和网络设备，该方法用于无随机接入的切换过程中，该方法包括：终端设备向网络侧发送第一信息，该第一信息包括目标基站的第一下行波束对应的索引信息，该第一下行波束用于该目标基站与该终端设备之间的下行通信。本申请实施例的无线通信方法、终端设备和网络设备，可以在较短的时间内建立目标基站与终端设备之间的下行连接。

Description

一种无线通信方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域，具体涉及一种无线通信方法、终端设备和网络设备。
背景技术
在长期演进(Long Term Evolution，LTE)系统的切换过程中，随机接入主要是为了使终端设备实现与目标基站的上行同步。然而，与LTE不同的是，在新无线(New Radio，NR)系统(或称5G系统、5G网络)中，引入了多波束机制。此外，切换过程中的随机接入的时延较大。
因此，在NR系统中，在随机切换过程中如何减少切换的时延，以及在多波束机制下如何实现终端设备与网络侧之间的同步是亟待解决的问题。
发明内容
本申请实施例提供一种无线通信方法、终端设备和网络设备，可以在较短的时间内建立目标基站与终端设备之间的下行连接。
第一方面，提供了一种无线通信方法，所述方法用于无随机接入的切换过程中，所述方法包括：终端设备向网络侧发送第一信息，所述第一信息包括目标基站的第一下行波束对应的索引信息，所述第一下行波束用于所述目标基站与所述终端设备之间的下行通信。
第二方面，提供了一种无线通信方法，所述方法用于无随机接入的切换过程中，所述方法包括：网络侧接收终端设备发送的第一信息，所述第一信息包括目标基站的第一下行波束对应的索引信息，所述第一下行波束用于所述目标基站与所述终端设备之间的下行通信。
第三方面，提供了一种终端设备，用于执行上述第一方面或其各实现方式中的方法。
具体地，该终端设备包括用于执行上述第一方面或其各实现方式中的方法的功能模块。
第四方面，提供了一种网络设备，用于执行上述第二方面或其各实现方式中的方法。
具体地，该网络设备包括用于执行上述第二方面或其各实现方式中的方法的功能模块。
第五方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面或其各实现方式中的方法。
第六方面，提供了一种网络设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第二方面或其各实现方式中的方法。
第七方面，提供了一种芯片，用于实现上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第八方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第九方面，提供了一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第十方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
通过上述技术方案，终端设备可以向网络侧发送下行波束对应的索引信息，在网络设备接收到下行波束对应的索引信息后，目标基站可以确定与终端设备之间进行下行通信所使用的下行波束。此外，由于本申请实施例采用无随机接入的切换，使得目标基站可以在较短的时间内建立目标基站与终端设备之间的下行连接。
附图说明
图1是本申请实施例提供的一种通信系统架构的示意性图。
图2是本申请实施例提供的一种切换流程图。
图3是本申请实施例提供的一种无线通信方法的示意性流程图。
图4是根据本申请实施例的终端设备的示意性框图。
图5是根据本申请实施例的网络设备的示意性框图。
图6是根据本申请实施例的通信设备的示意性框图。
图7是根据本申请实施例的芯片的示意性框图。
图8是根据本申请实施例的通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE 频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统或5G系统等。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。可选地，该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接，如经由公共交换电话网络(Public Switched Telephone Networks，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接/网络；和/或经由无线接口，如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器；和/或另一终端设备的被设置成接收/发送通信信号的装置；和/或物联网(Internet of Things，IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System，GPS)接收器的PDA；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地，终端设备120之间可以进行终端直连(Device to Device，D2D) 通信。
可选地，5G系统或5G网络还可以称为新无线(New Radio，NR)系统或NR网络。
应理解，本申请实施例可以应用于无随机接入的切换过程中。图2是可以应用本申请实施例的一种切换流程图。下面结合图2对整个切换过程进行描述，可以看到，切换过程可以包括3个阶段。
第一阶段，切换准备(201～205)
在201中，源基站触发终端设备进行邻区测量，从而终端设备可以对邻区进行测量，并将测量结果上报给源基站。
在202中，源基站对终端设备上报的测量结果进行评估，决定是否触发切换。
在203中，若源基站决定触发切换，则可以向目标基站发送切换请求。
在204中，目标基站接收到源基站发送的切换请求后，可以根据源基站携带的业务信息开始准入，并进行无线资源配置。
在205中，目标基站向源基站发送切换请求确认消息，将在目标基站内的准入结果和无线资源配置信息返回给源基站。至此，切换准备阶段完成。
第二阶段，切换执行(206～208)
在206中，源基站接收到目标基站的切换请求确认消息后，可以触发终端设备进行切换。
在207中，源基站可以将缓冲数据、在传数据包、数据的系统序列号等转发给目标基站。并且，目标基站可以缓存从源基站接收的数据
此外，终端设备可以断开与源基站的连接，与目标基站建立同步。
在208中，终端设备同步到目标基站。至此，切换执行阶段完成。
第三阶段，切换完成(209～212)
在209中，目标基站向移动性管理功能(Access and Mobility Management Function，AMF)发送路径切换请求。
在210中，AMF接收到目标基站的路径切换请求后，与用户面功能(User Plane Function，UPF)执行路径切换，清除源基站用户面的路径标记。
在211中，在路径切换完成之后，AMF可以向目标基站发送路径切换确认消息。
在212中，目标基站向源基站发送终端设备上下文释放消息，通知源基站切换成功，并触发源基站终端设备上下文。至此，切换完成。
下面将结合图2的切换流程图对本申请实施例做进一步详细说明。
图3是根据本申请实施例的一种无线通信方法300的示意性流程图。该方法300包括以下内容中的至少部分内容。
在310中，终端设备向网络侧发送第一信息，其中，该第一信息包括目标基站的第一下行波束对应的索引信息，第一下行波束用于目标基站与终端设备之间的下行通信。
应理解，一个下行波束可以对应一个参考信号，下行波束的索引可以与 参考信号的索引一一对应。
下行波束索的引与参考信号的索引一一对应可以理解为：第一下行波束对应的索引为第一下行波束上承载的同步信号块(Synchronization Signal block，SSB)或信道状态信息参考信号(Channel State Information-Reference Signal，CSI-RS)的索引。
可选地，第一信息包括目标基站的第一下行波束对应的索引信息可以理解为：第一信息中只包括第一下行波束对应的索引信息；或者，第一信息中只包括目标基站的至少一个下行波束对应的索引信息，至少一个下行波束包括第一下行波束；或者，第一信息包括至少一个基站的至少一个下行波束对应的索引信息，至少一个基站包括目标基站，至少一个下行波束包括第一下行波束。
在本申请实施例中，终端设备可以通过以下几种方式向网络侧发送第一信息：
方式一，第一信息可以承载于切换过程中的无线资源控制(Radio Resource Control，RRC)连接重配完成消息中。
该方式可以应用于208中，终端设备实现与目标基站的上行同步，向目标基站发送RRC连接重配完成消息时，终端设备可以将第一信息承载于RRC连接重配完成消息中。
方式二，第一信息可以承载于媒体接入控制(Media Access Control，MAC)控制单元(Control Element，CE)，或上行控制信息(Uplink Control Information，UCI)中。
具体而言，在终端设备向目标基站发送RRC连接重配完成消息后，终端设备可以将第一信息承载在上行数据包中，通过MAC CE或UCI将第一信息发送给网络侧。例如，MAC CE或UCI可以在网络之间互连的协议(Internet Protocol，IP)包中携带该第一信息。
需要说明的是，终端设备向目标基站发送RRC连接重配完成消息后，向目标基站发送数据包的任一步骤中，终端设备都可以将第一信息承载在数据包中。例如，在208之后的任一步骤中，若终端设备向目标基站发送数据包，则终端设备可以将第一信息承载在该数据包中。
对于方式一和方式二，在一种可能的实施例中，终端设备可以从目标基站的至少一个下行波束的测量结果中，选择第一下行波束，然后将第一下行波束对应的索引包括于第一信息中进行发送。
可选地，终端设备从目标基站的至少一个下行波束的测量的结果中，选择第一下行波束，可以包括：终端设备对目标基站的至少一个下行波束，进行信道质量测量，得到测量结果，根据测量结果，在至少一个下行波束中选择第一下行波束。
需要说明的是，本申请实施例中，终端设备对波束进行测量可以理解为：终端设备对波束上承载的SSB或CSI-RS进行测量。
例如，终端设备对目标基站的至少一个下行波束进行信道质量测量，可 以包括：终端设备对目标基站的每个下行波束上承载的SSB或CSI-RS，进行测量。
在一种实现方式中，终端设备对目标基站的至少一个下行波束进行信道质量测量，具体可以包括：在源基站触发终端设备进行邻区测量后，终端设备可以基于源基站发送的测量配置信息对邻区的下行波束，进行信道质量测量(例如，该过程可以对应于201)。其中，测量配置信息可以包括测量频率列表、每个频率对应的小区列表和测量量。
可选地，测量量可以包括但不限于参考信号接收功率(reference signal received power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、参考信号的信号与干扰加噪声比(reference signal-signal to interference plus noise ratio，RS-SINR)
终端设备对邻区的下行波束测量完成之后，可以向源基站上报测量结果，该测量结果包括目标基站在内的至少一个基站的至少一个下行波束的测量结果(例如，该过程可以对应于201)。
源基站接收到终端设备发送的测量结果后，根据测量结果确定目标基站。之后，可以向目标基站发送切换请求，目标基站将切换请求响应消息发送给源基站后，源基站可以向终端设备发送RRC连接重配消息，通知终端设备进行切换。终端设备接收到RRC连接重配消息后，可以确定目标基站(例如，该过程可以对应于206)。之后，终端设备可以在至少一个基站的至少一个下行波束的测量结果中，选择目标基站的至少一个下行波束的测量结果。
在终端设备选择目标基站的至少一个下行波束的测量结果后，作为一种示例，终端设备可以将目标基站的至少一个下行波束的测量结果与对目标基站进行波束选择时的阈值进行比较，根据比较结果，选择第一下行波束。
可选地，终端设备可以将目标基站的至少一个下行波束上承载的SSB或CSI-RS的测量结果与阈值进行比较。
可选地，该阈值可以是预设的，也可以是根据信令确定的。
示例性地，该阈值可以是预设在终端设备上的，也可以是预设在网络侧上的。
示例性地，该阈值可以是终端设备确定的。终端设备向网络侧发送包括该阈值的信息，网络侧接收到该息后，可以获取到该阈值。
示例性地，该阈值可以是网络侧确定的。
若该阈值是预设在网络侧上的或者是网络侧确定的，此时，网络侧可以向终端设备发送第二信息，其中，第二信息可以用于指示目标基站的需要测量的波束列表，和/或，该阈值。
终端设备接收到第二信息后，可以基于该阈值，对目标基站的波束进行选择。
可选地，第二信息可以承载于RRC连接重配消息中(例如，可以对应于206)。若第二信息承载于RRC连接重配消息中，终端设备接收到RRC连 接重配消息后，可以基于目标基站需要测量的波束列表，从至少一个基站的至少一个下行波束中选择目标基站的至少一个下行波束。
可选地，第二信息可以承载于测量配置信息中(例如，可以对应于201)。若第二信息承载于测量配置信息中，终端设备接收到测量配置信息后，可以基于目标基站需要测量的波束列表，对目标基站的下行波束进行测量。
应理解，在本申请实施例中，“第一”和“第二”仅仅为了区分不同的对象，但并不对本申请实施例的范围构成限制。
还应理解，在本申请实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
之后，终端设备可以将该阈值与目标基站的至少一个下行波束的测量结果进行比较，然后根据比较结果，终端设备可以选择第一下行波束。
在终端设备根据比较结果选择第一下行波束的过程中，终端设备可以将目标基站的至少一个下行波束的测量结果大于阈值的下行波束选择为第一下行波束。
若测量结果大于阈值的波束有多个时，可选地，终端设备可以随机选择一个下行波束作为第一下行波束。或者，终端设备也可以采用其它实现方式从测量结果大于阈值的多个下行波束中选择第一下行波束，本申请实施例对此不做具体限定。例如，测量结果大于阈值的多个下行波束中，终端设备可以将业务量最少的下行波束选择为第一下行波束。
在终端设备选择目标基站的至少一个下行波束的测量结果后，作为另一种示例，终端设备可以根据目标基站的至少一个下行波束的测量结果，选择信号强度最强的下行波束作为第一下行波束。
可选地，信号强度可以包括但不限于信号的功率、电压或幅值等。
可选地，终端设备可以根据目标基站的至少一个下行波束的信道质量指示(Channel Quality Indicator，CQI)、RSRP、RSRQ、秩指示(Rank Indication，RI)中的至少一个选择第一下行波束。
例如，在目标基站的至少一个下行波束中，终端设备可以将取值最大的CQI对应的下行波束选择为第一下行波束。
在另一种可能的实施例中，在终端设备确定目标基站后，终端设备可以将目标基站的至少一个下行波束的测量结果发送给目标基站，目标基站接收到该测量结果后，可以根据测量结果从目标基站的至少一个下行波束的测量结果中，选择第一下行波束。
相应地，终端设备也可以根据测量结果，从目标基站的至少一个下行波束的测量结果中，选择第一下行波束。
可选地，目标基站和终端设备可以基于预设规则，根据测量结果选择第一下行波束。
可选地，该预设规则可以是预设的，也可以是根据信令确定的。
例如，该预设规则可以是预设在终端设备和目标基站上的。
再例如，该预设规则可以是预设在终端设备上的，终端设备再将包括该预设规则的信息发送给目标基站。比如，包括该预设规则的信息可以承载在RRC重配完成消息中，也可以承载在MAC CE或UCI中。
再例如，该预设规则可以是预设在目标基站上的，目标基站可以在终端设备选择第一下行波束之前，将包括该预设规则的信息发送给终端设备。
再例如，该预设规则可以是终端设备确定的，终端设备再将包括该预设规则的信息发送给目标基站。
再例如，该预设规则可以是目标基站确定的，目标基站再将包括该预设规则的信息发送给终端设备。
在另一种可能的实施例中，终端设备可以将至少一个基站的至少一个下行波束的测量结果发送给目标基站。目标基站接收到该测量结果后，可以从至少一个基站的至少一个下行波束中，选择目标基站的至少一个下行波束。之后，目标基站可以根据测量结果，从目标基站的至少一个下行波束中，选择第一下行波束。
相应地，终端设备也可以采用与目标基站相同的方法，从目标基站的至少一个下行波束中，选择第一下行波束。
需要说明的是，目标基站根据测量结果选择第一下行波束的实现方式可以参考终端设备根据测量结果选择第一下行波束的实现方式，这里，为了内容的简洁，不作过多描述。
方式三，第一信息可以承载于终端设备向源基站发送的测量报告中。
该方式可以应用于201中。其中，该测量报告可以包括邻区的测量报告，邻区对应的基站包括目标基站，第一信息可以包括至少一个基站的至少一个下行波束的索引信息，至少一个基站包括目标基站，至少一个下行波束包括第一下行波束。
源基站接收到终端设备发送的测量报告后，可以根据测量报告在至少一个基站的至少一个下行波束中，选择第一下行波束，然后，源基站可以将第一下行波束对应的索引信息发送给目标基站。
或者，源基站接收到终端设备发送的测量报告后，可以根据测量结果在至少一个基站的至少一个下行波束中，选择测量值大于阈值的至少一个下行波束，该至少一个下行波束对应至少一个基站，该至少一个下行波束包括第一下行波束。之后，源基站可以将该至少一个下行波束对应的索引信息，以及该至少一个下行波束的测量结果发送给目标基站。目标基站接收到该至少一个下行波束的测量结果后，可以根据测量结果，选择第一下行波束。
或者，源基站接收到终端设备发送的测量报告后，可以在至少一个基站的至少一个下行波束中选择目标基站的至少一个下行波束，之后，源基站可以将目标基站的至少一个下行波束对应的索引信息以及目标基站的至少一个下行波束的测量结果发送给目标基站。目标基站接收到目标基站的至少一个下行波束对应的索引信息以及目标基站的至少一个下行波束的测量结果 后，可以根据测量结果，选择第一下行波束。
或者，源基站在接收到终端设备发送的测量报告后，可以将该测量报告再发给目标基站。源基站接收到测量报告后，可以根据测量结果，选择第一下行波束。
相应地，终端设备在确定目标基站后，可以根据测量结果，从至少一个下行波束中选择第一下行波束。
可选地，在本申请实施例中，终端设备在接收到源基站发送的RRC连接重配消息后，可以确定目标基站。在确定目标基站之后，终端设备可以从目标基站的至少一个下行波束中，选择第一下行波束。之后，终端设备可以利用第一下行波束，与目标基站进行下行通信。
应理解，目标基站和终端设备根据测量结果选择第一下行波束的方式可以参考上文的内容，这里，为了避免赘述，省略其详细说明。
在本申请实施例中，该方法还可以包括：终端设备接收网络侧发送的目标基站的时间调整量(Timing Adjustment，TA)和/或上行授权。
其中，TA可以用于实现终端设备与目标基站的上行同步，上行授权可以用于指示终端设备进行上行传输的时频资源。
作为一种示例，TA和/或上行授权可以是经由源基站转发给终端设备的。具体而言，目标基站可以向源基站发送TA和/或上行授权，源基站接收到TA和/或上行授权后，可以向终端设备发送TA和/或上行授权。
此时，终端设备与目标基站之间传输第一信息的时间晚于终端设备与源基站之间传输TA和/或上行授权的时间。
例如，终端设备在确定目标基站后，可以在208中向目标基站发送第一信息，此时，第一信息可以承载于RRC连接重配完成消息中；或，终端设备可以在208之后向目标基站发送第一信息，此时，第一信息可以承载于MAC CE或UCI中。
作为一种示例，TA和/或上行授权可以是目标基站发送给终端设备的。
此时，终端设备与源基站之间传输第一信息的时间早于终端设备与目标基站之间传输TA和/或上行授权的时间。
例如，终端设备在确定目标基站前，可以在201中向源基站发送第一信息，此时，第一消息可以承载于终端设备向源基站发送的测量报告中。
可选地，TA和/或上行授权可以承载于RRC连接重配消息中。
或者，TA和/或上行授权可以承载于物理下行控制信道(Physical Downlink Control Channel，PDCCH)、增强的物理下行控制信道(Enhanced Physical Downlink Control Channel，EPDCCH)、机器类通信物理下行控制信道(Machine Type Communication Physical Downlink Control Channel，MPDCCH)、物理副链路控制信道(Physical Sidelink Control Channel，PSCCH)或窄带物理下行控制信道(Narrowband Physical Downlink Control Channel，NPDCCH)中。
终端设备接收到目标基站的TA和/或上行授权后，可以实现与目标基站 的上行同步。并且，终端设备可以基于上行授权，获得上行资源，从而实现终端设备与目标基站的上行传输。
在320中，网络设备接收终端设备发送的第一信息。
在网络侧设备收到终端设备发送的第一信息后，目标基站可以确定与终端设备进行下行通信所使用的第一下行波束，从而可以利用第一下行波束与终端设备进行下行通信。
应理解，在310中，已经对网络设备接收到终端设备发送的第一信息后，目标基站确定与终端设备进行下行通信所使用的第一下行波束的实现方式进行了详细描述，此处，不再赘述。
需要说明的是，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以任意的相互组合，组合之后得到的技术方案也应落到本申请的保护范围。
本申请实施例，终端设备可以向网络侧发送包括下行波束对应的索引信息，在网络设备接收到下行波束对应的索引信息后，从而目标基站可以确定与终端设备进行下行通信所使用的下行波束。此外，由于本申请实施例采用无随机接入的切换，使得目标基站可以在较短的时间内建立目标基站与终端设备之间的下行连接。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文中详细描述了根据本申请实施例的无线通信方法，下面将结合图4至图6，描述根据本申请实施例的无线通信装置，方法实施例所描述的技术特征适用于以下装置实施例。
图4示出了本申请实施例的终端设备400的示意性框图。如图4所示，该终端设备400包括：
通信单元410，用于向网络侧发送第一信息，该第一信息包括目标基站的第一下行波束对应的索引信息，第一下行波束用于目标基站与该终端设备400之间的下行通信。
可选地，在本申请实施例中，该第一信息承载于切换过程中的RRC连接重配完成消息中。
可选地，在本申请实施例中，该第一信息承载于MAC CE或UCI中。
可选地，在本申请实施例中，该终端设备400还包括：处理单元420，用于从目标基站的至少一个波束的测量结果中，选择第一下行波束，以用于将第一下行波束对应的索引包括于第一信息中。
可选地，在本申请实施例中，该第一信息承载于向源基站发送的测量报告中，该测量报告包括邻区的测量报告，邻区对应的基站包括目标基站，第一信息包括目标基站的至少一个下行波束对应的索引信息，至少一个下行波束包括第一下行波束。
可选地，在本申请实施例中，该终端设备400还包括：处理单元420， 用于在确定目标基站之后，从至少一个下行波束中，选择用于与目标基站进行下行通信的第一下行波束；
该通信单元410还用于：利用第一下行波束，与目标基站进行下行通信。
可选地，在本申请实施例中，该第一下行波束对应的索引为第一下行波束上承载的同步信号块SSB或信道状态信息参考信号CSI-RS的索引。
可选地，在本申请实施例中，该通信单元410还用于：接收网络侧发送的目标基站时间调整量TA和/或上行授权；基于TA和/或上行授权，与目标基站进行上行通信。
可选地，在本申请实施例中，该目标基站的TA和/或上行授权是经由源基站转发给该终端设备400的。
可选地，在本申请实施例中，与网络侧之间传输第一信息的时间晚于与网络侧之间传输TA和/或上行授权的时间。
可选地，在本申请实施例中，该目标基站的TA和/或上行授权承载于RRC连接重配消息或物理下行控制信道PDCCH中。
可选地，在本申请实施例中，该通信单元410还用于：接收网络侧发的第二信息，该第二信息用于指示目标基站的需要测量的波束的列表和/或对目标基站进行波束选择时的阈值。
可选地，在本申请实施例中，该终端设备400还包括：处理单元420，用于基于该列表和/或所述阈值，对目标基站的波束进行测量和/或选择。
应理解，该终端设备400可对应于方法300中的终端设备，可以实现该方法300中的终端设备的相应操作，为了简洁，在此不再赘述。
图5示出了本申请实施例的网络设备500的示意性框图。如图5所示，该网络设备500包括：
通信单元510，用于接收终端设备发送的第一信息，该第一信息包括目标基站的第一下行波束对应的索引信息，第一下行波束用于目标基站与终端设备之间的下行通信。
可选地，在本申请实施例中，该第一信息承载于切换过程中的无RRC连接重配完成消息中。
可选地，在本申请实施例中，该第一信息承载于MAC CE或上UCI中。
可选地，在本申请实施例中，该第一信息承载于从源基站接收的测量报告中，该测量报告包括邻区的测量报告，邻区对应的基站包括目标基站，第一信息包括目标基站的至少一个下行波束的索引信息，至少一个下行波束包括第一下行波束。
可选地，在本申请实施例中，当该网络设备500为目标基站时，该网络设备500还包括：处理单元510，用于从至少一个下行波束中，选择第一下行波束；
该通信单元510还用于：利用第一下行波束，与终端设备进行下行通信。
该网络设备500通信单元510还用于：向终端设备发送目标基站的时间调整量TA和/或上行授权；当该网络设备500为目标基站时，该通信单元510 还用于：基于TA和/或上行授权，与终端设备进行上行通信。
可选地，在本申请实施例中，该目标基站的TA和/或上行授权是经由源基站转发给所述终端设备的。
可选地，在本申请实施例中，终端设备与该网络设备500之间传输第一信息的时间晚于终端设备与该网络设备500之间传输TA和/或上行授权的时间。
可选地，在本申请实施例中，该目标基站的TA和/或上行授权承载于RRC连接重配消息或物理下行控制信道PDCCH中。
可选地，在本申请实施例中，当该网络设备500为源基站时，该通信单元510还用于：向终端设备发送第二信息，该第二信息用于指示目标基站的需要测量的波束的列表和/或对目标基站进行波束选择时的阈值。
应理解，该网络设备500可对应于方法300中的网络设备，可以实现该方法300中的网络设备的相应操作，为了简洁，在此不再赘述。
图6是本申请实施例提供的一种通信设备600示意性结构图。图6所示的通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图6所示，通信设备600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，如图6所示，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备600具体可为本申请实施例的网络设备，并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备600具体可为本申请实施例的终端设备，并且该通信设备600可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
图7是本申请实施例的芯片的示意性结构图。图7所示的芯片700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，芯片700还可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以 集成在处理器710中。
可选地，该芯片700还可以包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片700还可以包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的终端设备，并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR  SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图8是本申请实施例提供的一种通信系统800的示意性框图。如图8所示，该通信系统800包括终端设备810和网络设备820。
其中，该终端设备810可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备820可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选地，该计算机可读存储介质可应用于本申请实施例中的终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选地，该计算机程序产品可应用于本申请实施例中的终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选地，该计算机程序可应用于本申请实施例中的终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算 机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (56)

  1. 一种无线通信方法，其特征在于，所述方法用于无随机接入的切换过程中，所述方法包括：
    终端设备向网络侧发送第一信息，所述第一信息包括目标基站的第一下行波束对应的索引信息，所述第一下行波束用于所述目标基站与所述终端设备之间的下行通信。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息承载于所述切换过程中的无线资源控制RRC连接重配完成消息中。
  3. 根据权利要求1所述的方法，其特征在于，所述第一信息承载于媒体接入控制MAC控制单元CE或上行控制信息UCI中。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备从所述目标基站的至少一个波束的测量结果中，选择所述第一下行波束，以用于将所述第一下行波束对应的索引包括于所述第一信息中。
  5. 根据权利要求1所述的方法，其特征在于，所述第一信息承载于向源基站发送的测量报告中，所述测量报告包括邻区的测量报告，所述邻区对应的基站包括所述目标基站，所述第一信息包括所述目标基站的至少一个下行波束对应的索引信息，所述至少一个下行波束包括所述第一下行波束。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    在确定所述目标基站之后，所述终端设备从所述至少一个下行波束中，选择用于与所述目标基站进行下行通信的所述第一下行波束；
    所述终端设备利用所述第一下行波束，与所述目标基站进行下行通信。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述第一下行波束对应的索引为所述第一下行波束上承载的同步信号块SSB或信道状态信息参考信号CSI-RS的索引。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收网络侧发送的所述目标基站的时间调整量TA和/或上行授权；
    基于所述TA和/或上行授权，所述终端设备与所述目标基站进行上行通信。
  9. 根据权利要求8所述的方法，其特征在于，所述目标基站的TA和/或上行授权是经由源基站转发给所述终端设备的。
  10. 根据权利要求8或9所述的方法，其特征在于，所述终端设备与网络侧之间传输所述第一信息的时间晚于所述终端设备与网络侧之间传输所述TA和/或上行授权的时间。
  11. 根据权利要求8至10中任一项所述的方法，其特征在于，所述目 标基站的TA和/或上行授权承载于RRC连接重配消息或物理下行控制信道PDCCH中。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收网络侧发的第二信息，所述第二信息用于指示所述目标基站的需要测量的波束的列表和/或对目标基站进行波束选择时的阈值；
    基于所述列表和/或所述阈值，所述终端设备对所述目标基站的波束进行测量和/或选择。
  13. 一种无线通信方法，其特征在于，所述方法用于无随机接入的切换过程中，所述方法包括：
    网络设备接收终端设备发送的第一信息，所述第一信息包括目标基站的第一下行波束对应的索引信息，所述第一下行波束用于所述目标基站与所述终端设备之间的下行通信。
  14. 根据权利要求13所述的方法，其特征在于，所述第一信息承载于所述切换过程中的无线资源控制RRC连接重配完成消息中。
  15. 根据权利要求13所述的方法，其特征在于，所述第一信息承载于媒体接入控制MAC控制单元CE或上行控制信息UCI中。
  16. 根据权利要求13所述的方法，其特征在于，所述第一信息承载于从源基站接收的测量报告中，所述测量报告包括邻区的测量报告，所述邻区对应的基站包括所述目标基站，所述第一信息包括所述目标基站的至少一个下行波束的索引信息，所述至少一个下行波束包括所述第一下行波束。
  17. 根据权利要求16所述的方法，其特征在于，所述方法还包括：
    当所述网络设备为所述目标基站时，所述目标基站从所述至少一个下行波束中，选择所述第一下行波束；
    所述目标基站利用所述第一下行波束，与所述终端设备进行下行通信。
  18. 根据权利要求13至17中任一项所述的方法，其特征在于，所述第一下行波束对应的索引为所述第一下行波束上承载的同步信号块SSB或信道状态信息参考信号CSI-RS的索引。
  19. 根据权利要求13至18中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送所述目标基站时间调整量TA和/或上行授权；
    当所述网络设备为目标基站时，基于所述TA和/或上行授权，所述目标基站与所述终端设备进行上行通信。
  20. 根据权利要求19所述的方法，其特征在于，所述目标基站的TA和/或上行授权是经由源基站转发给所述终端设备的。
  21. 根据权利要求19或20所述的方法，其特征在于，所述终端设备与网络设备之间传输所述第一信息的时间晚于所述终端设备与网络设备之间传输所述TA和/或上行授权的时间。
  22. 根据权利要求19至21中任一项所述的方法，其特征在于，所述目标基站的TA和/或上行授权承载于RRC连接重配消息或物理下行控制信道PDCCH中。
  23. 根据权利要求13至22中任一项所述的方法，其特征在于，所述方法还包括：
    当所述网络设备为源基站时，所述源基站向所述终端设备发送第二信息，所述第二信息用于指示所述目标基站的需要测量的波束的列表和/或对目标基站进行波束选择时的阈值。
  24. 一种终端设备，其特征在于，所述终端设备用于无随机接入的切换过程中，包括：
    通信单元，用于向网络侧发送第一信息，所述第一信息包括目标基站的第一下行波束对应的索引信息，所述第一下行波束用于所述目标基站与所述终端设备之间的下行通信。
  25. 根据权利要求24所述的终端设备，其特征在于，所述第一信息承载于所述切换过程中的无线资源控制RRC连接重配完成消息中。
  26. 根据权利要求24所述的终端设备，其特征在于，所述第一信息承载于媒体接入控制MAC控制单元CE或上行控制信息UCI中。
  27. 根据权利要求24至26中任一项所述的终端设备，其特征在于，所述终端设备还包括：
    处理单元，用于从所述目标基站的至少一个波束的测量结果中，选择所述第一下行波束，以用于将所述第一下行波束对应的索引包括于所述第一信息中。
  28. 根据权利要求24所述的终端设备，其特征在于，所述第一信息承载于向源基站发送的测量报告中，所述测量报告包括邻区的测量报告，所述邻区对应的基站包括所述目标基站，所述第一信息包括所述目标基站的至少一个下行波束对应的索引信息，所述至少一个下行波束包括所述第一下行波束。
  29. 根据权利要求28所述的终端设备，其特征在于，所述终端设备还包括：
    处理单元，用于在确定所述目标基站之后，从所述至少一个下行波束中，选择用于与所述目标基站进行下行通信的所述第一下行波束；
    所述通信单元还用于：
    利用所述第一下行波束，与所述目标基站进行下行通信。
  30. 根据权利要求24至29中任一项所述的终端设备，其特征在于，所述第一下行波束对应的索引为所述第一下行波束上承载的同步信号块SSB或信道状态信息参考信号CSI-RS的索引。
  31. 根据权利要求24至30中任一项所述的终端设备，其特征在于，所述通信单元还用于：
    接收网络侧发送的所述目标基站时间调整量TA和/或上行授权；
    基于所述TA和/或上行授权，与所述目标基站进行上行通信。
  32. 根据权利要求31所述的终端设备，其特征在于，所述目标基站的TA和/或上行授权是经由源基站转发给所述终端设备的。
  33. 根据权利要求31或32所述的终端设备，其特征在于，与网络侧之间传输所述第一信息的时间晚于与网络侧之间传输所述TA和/或上行授权的时间。
  34. 根据权利要求31至33中任一项所述的终端设备，其特征在于，所述目标基站的TA和/或上行授权承载于RRC连接重配消息或物理下行控制信道PDCCH中。
  35. 根据权利要求24至34中任一项所述的终端设备，其特征在于，所述通信单元还用于：
    接收网络侧发的第二信息，所述第二信息用于指示所述目标基站的需要测量的波束的列表和/或对目标基站进行波束选择时的阈值；
    所述终端设备还包括：
    处理单元，用于基于所述列表和/或所述阈值，对所述目标基站的波束进行测量和/或选择。
  36. 一种网络设备，其特征在于，所述网络设备用于无随机接入的切换过程中，包括：
    通信单元，用于接收终端设备发送的第一信息，所述第一信息包括目标基站的第一下行波束对应的索引信息，所述第一下行波束用于所述目标基站与所述终端设备之间的下行通信。
  37. 根据权利要求36所述的网络设备，其特征在于，所述第一信息承载于所述切换过程中的无线资源控制RRC连接重配完成消息中。
  38. 根据权利要求36所述的网络设备，其特征在于，所述第一信息承载于媒体接入控制MAC控制单元CE或上行控制信息UCI中。
  39. 根据权利要求36所述的网络设备，其特征在于，所述第一信息承载于从源基站接收的测量报告中，所述测量报告包括邻区的测量报告，所述邻区对应的基站包括所述目标基站，所述第一信息包括所述目标基站的至少一个下行波束的索引信息，所述至少一个下行波束包括所述第一下行波束。
  40. 根据权利要求39所述的网络设备，其特征在于，当所述网络设备为目标基站时，所述网络设备还包括：
    处理单元，用于从所述至少一个下行波束中，选择所述第一下行波束；
    所述通信单元还用于：
    利用所述第一下行波束，与所述终端设备进行下行通信。
  41. 根据权利要求36至40中任一项所述的网络设备，其特征在于，所述第一下行波束对应的索引为所述第一下行波束上承载的同步信号块SSB或信道状态信息参考信号CSI-RS的索引。
  42. 根据权利要求36至41中任一项所述的网络设备，其特征在于，所述通信单元还用于：
    向所述终端设备发送所述目标基站的时间调整量TA和/或上行授权；
    当所述网络设备为目标基站时，所述通信单元还用于：
    基于所述TA和/或上行授权，与所述终端设备进行上行通信。
  43. 根据权利要求42所述的网络设备，其特征在于，所述目标基站的TA和/或上行授权是经由源基站转发给所述终端设备的。
  44. 根据权利要求42或43所述的网络设备，其特征在于，所述终端设备与网络设备之间传输所述第一信息的时间晚于所述终端设备与网络设备之间传输所述TA和/或上行授权的时间。
  45. 根据权利要求42至44中任一项所述的网络设备，其特征在于，所述目标基站的TA和/或上行授权承载于RRC连接重配消息或物理下行控制信道PDCCH中。
  46. 根据权利要求36至45中任一项所述的网络设备，其特征在于，当所述网络设备为源基站时，所述通信单元还用于：
    向所述终端设备发送第二信息，所述第二信息用于指示所述目标基站的需要测量的波束的列表和/或对目标基站进行波束选择时的阈值。
  47. 一种终端设备，其特征在于，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至12中任一项所述的方法。
  48. 一种网络设备，其特征在于，包括：处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求13至23中任一项所述的方法。
  49. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至12中任一项所述的方法。
  50. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求13至23中任一项所述的方法。
  51. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
  52. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求13至23中任一项所述的方法。
  53. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至12中任一项所述的方法。
  54. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求13至23中任一项所述的方法。
  55. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
  56. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求13至23中任一项所述的方法。
PCT/CN2018/100051 2018-08-10 2018-08-10 一种无线通信方法、终端设备和网络设备 WO2020029275A1 (zh)

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