WO2021088598A1 - 网络的切换方法和装置 - Google Patents

网络的切换方法和装置 Download PDF

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Publication number
WO2021088598A1
WO2021088598A1 PCT/CN2020/120436 CN2020120436W WO2021088598A1 WO 2021088598 A1 WO2021088598 A1 WO 2021088598A1 CN 2020120436 W CN2020120436 W CN 2020120436W WO 2021088598 A1 WO2021088598 A1 WO 2021088598A1
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WIPO (PCT)
Prior art keywords
terminal device
information
switching
handover
network device
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Application number
PCT/CN2020/120436
Other languages
English (en)
French (fr)
Inventor
周建伟
罗禾佳
徐晨蕾
王晓鲁
王俊
Original Assignee
华为技术有限公司
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.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20885765.6A priority Critical patent/EP4044454A4/en
Publication of WO2021088598A1 publication Critical patent/WO2021088598A1/zh
Priority to US17/738,810 priority patent/US20220264417A1/en

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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
    • 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
    • H04B7/204—Multiple access
    • H04B7/2041—Spot beam multiple access
    • 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
    • H04B7/18515—Transmission equipment in satellites or space-based relays
    • 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
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • 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
    • H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • 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
    • H04W36/324—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data

Definitions

  • This application relates to communication technology, and in particular to a method and device for network switching.
  • Satellite communication has the advantages of wide coverage, flexible networking, convenient deployment, and freedom from geographical conditions, which has enabled more development in satellite communication.
  • LEO low earth orbit
  • MEO medium earth orbit
  • HEO high earth orbit
  • GEO geostationary earth orbit
  • LEO satellites are closer to the earth's surface, have shorter propagation delays, and suffer less path loss, LEO satellites have a wider range of applications.
  • UE user equipment
  • the duration of the UE in the coverage area of a beam may be less than 3s.
  • the LEO satellite sends one or more channels including Channel-State Information RS, CSI- RS) beams (4 beams in Figure 1), the UE measures CSI-RS reference signals to obtain multiple (4 in Figure 1) Reference Signal Receiving Power (RSRP), and the UE reports to LEO The satellite reports the results of the signal quality measurement. Based on the received quality measurement results, the LEO satellite selects the beam corresponding to the CSI-RS with the strongest RSRP for downlink channel transmission. When the RSRP measured by the UE in the serving beam is lower than the threshold, The LEO satellite informs the UE of the new beam information, thereby completing the handover between beams.
  • RSRP Channel-State Information
  • CSI- RS Channel-State Information
  • the method for implementing beam switching in the LEO satellite system by the UE in the prior art has a large signaling overhead, which affects the use efficiency.
  • the embodiments of the present application provide a network switching method and device to reduce the signaling overhead caused by beam switching in satellite communication.
  • an embodiment of the present application provides a network switching method.
  • a terminal device receives switching information sent by a first network device.
  • the switching information includes N switching items, and any switching item includes: time information and the identifier of the second beam.
  • the time information is used to indicate the length of time required for the terminal device to pass through the coverage area of the second beam corresponding to any switching item, and N is a positive integer.
  • the terminal device performs beam switching according to the switching information.
  • the beam currently serving the terminal device is the first beam, and the first beam is generated by the first network device.
  • the first network device obtains the user information of the terminal device, and the first network device can then use the user information After the handover information is obtained so that the first network device sends the handover information to the terminal device, the terminal device can perform beam switching according to the handover information.
  • the beam switching there is no need to perform measurement, report user information, and receive network as in the prior art.
  • the process of switching beams allocated by the device can reduce the signaling process and overhead of the network, thereby reducing the response time of the handover.
  • N is 1.
  • N is 1, it is equivalent to only predicting the latest beam switching for the terminal device, because the terminal device usually does not have a large deviation in the trajectory in a short time, so when N is 1, more accurate switching information can usually be obtained , In turn, the terminal device can realize beam switching with higher accuracy.
  • N is an integer greater than or equal to 2
  • the terminal device performs N beam switching according to the switching information, including: the terminal device performs N consecutive beam switching according to the switching information. Then, the terminal device can implement N consecutive beam switching based on the switching information, and the signaling overhead can be saved to a greater extent.
  • the terminal device performs beam switching according to the switching information, including: for the first switching item among the N switching items, the terminal device switches to the second beam corresponding to the first switching item at the start time corresponding to the first switching item . Because the terminal device can switch to the second beam corresponding to the first handover item at the start time corresponding to the first handover item, there is no need to perform procedures such as measurement, reporting user information, and receiving the handover beam assigned by the network device, so it can be greatly improved This saves the signaling overhead in beam switching.
  • the handover information is obtained based on the user information of the terminal device and the operation information of the first network device
  • the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and motion state information of the terminal device;
  • the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the speed at which the terminal device leaves the coverage area of the first beam
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the larger the speed at which the terminal device leaves the coverage area of the first beam the smaller N is.
  • the speed at which the terminal device leaves the coverage area of the first beam the more likely the motion trajectory of the terminal device will deviate from the predicted motion trajectory over time, so a smaller value of N can be set to obtain more accurate handover information.
  • the N switching items include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device; the terminal device performs N consecutive beam switching according to the switching information, including: for the second switching Item, the terminal device measures the signal quality of the terminal device in the second beam corresponding to the second switching item within the time corresponding to the second switching item; when the signal quality is greater than the threshold, sends a switching request to the second network device; the terminal The device receives the handover response message sent by the second network device and switches to the second beam corresponding to the second handover item.
  • the terminal device can switch to the second beam corresponding to the first switching item, so that the terminal device can switch to the second beam corresponding to the first switching item. There is better signal quality after the second beam.
  • the method further includes: the terminal device sends user information of the terminal device to the first network device.
  • an embodiment of the present application provides a method for switching a network.
  • a first network device obtains user information of a terminal device in a coverage area of a first beam.
  • the first network device sends switching information to the terminal device.
  • the switching information includes N switching items, and any switching item includes: time information and the identifier of the second beam.
  • the time information is used to indicate that the terminal device passes through the second corresponding to any switching item.
  • the time required for the coverage area of the beam, the switching information is used to instruct the terminal device to perform beam switching, and N is a positive integer.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the terminal device performs N beam switching according to the switching information, including: the terminal device performs N consecutive beam switching according to the switching information.
  • the first network device switches the terminal device to the second beam corresponding to the first handover item at the start time corresponding to the first handover item.
  • the handover information is obtained based on the user information of the terminal device and the operation information of the first network device, and the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and motion state information of the terminal device; Wherein, the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the speed at which the terminal device leaves the coverage area of the first beam .
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the smaller N is.
  • the N switching items include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device; the method further includes: the first network device sends the information including the terminal device to the second network device The message is used by the second network device to reserve resources for the terminal device within the time corresponding to the second handover item.
  • the terminal device belongs to a first group, the first group includes multiple terminal devices, and the handover information sent by the first network device received by each terminal device in the first group is the same.
  • the method further includes: the first network device receives user information of the terminal device sent by the terminal device.
  • an embodiment of the present application provides a method for switching a network.
  • a first network device obtains user information of a terminal device, where the terminal device is currently in the coverage area of the first beam; the first network device sends switching information to the terminal device ,
  • the switching information includes N switching items, any switching item includes: time information and the identifier of the second beam, and the time information is used to indicate the time required for the terminal device to pass through the coverage area of the second beam corresponding to any switching item, N It is a positive integer; the terminal device performs beam switching according to the switching information.
  • an embodiment of the present application provides a terminal device, including: a receiving module, configured to receive switching information sent by a first network device, the switching information includes N switching items, and any switching item includes: time information and second The identification of the beam, and the time information is used to indicate the time required for the terminal device to pass through the coverage area of the second beam corresponding to any switching item, and N is a positive integer; the processing module is used to perform beam switching according to the switching information.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the processing module is specifically configured to perform N consecutive beam switching according to the switching information.
  • the processing module is specifically further configured to switch to the second beam corresponding to the first switching item at the initial moment corresponding to the first switching item for the first switching item among the N switching items.
  • the handover information is obtained based on user information of the terminal device and/or operation information of the first network device
  • the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and movement status of the terminal device Information; where the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the terminal device leaves the coverage area of the first beam
  • the operating information of the first network device includes at least one of the following: operating direction information of the first network device, and coverage area information of adjacent beams in the coverage area of the first beam.
  • the smaller N is.
  • the N handover items include a second handover item, and the second beam corresponding to the second handover item is generated by the second network device; the processing module is also specifically used for the second handover item, corresponding to the second handover item Measure the signal quality of the terminal device in the second beam corresponding to the second handover item within the time period; if the signal quality is greater than the threshold, send a handover request to the second network device; receive a handover response message sent by the second network device and Switch to the second beam corresponding to the second switching item.
  • an embodiment of the present application provides a first network device, including: a processing module, configured to obtain user information of a terminal device in the coverage area of the first beam; and a sending module, configured to send handover information to the terminal device ,
  • the switching information includes N switching items, any switching item includes: time information and the identifier of the second beam, and the time information is used to indicate the time required for the terminal device to pass through the coverage area of the second beam corresponding to any switching item.
  • the information is used to instruct the terminal equipment to perform beam switching, and N is a positive integer.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the switching information is used to instruct the terminal device to perform N consecutive beam switching.
  • the processing module is further configured to switch the terminal device to the second beam corresponding to the first handover item at the initial moment corresponding to the first handover item for the first handover item among the N handover items.
  • the terminal device belongs to a first group, the first group includes multiple terminal devices, and the handover information sent by the first network device received by each terminal device in the first group is the same.
  • the handover information is obtained based on user information and/or operation information of the first network device
  • the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and motion state information of the terminal device; where ,
  • the movement state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the movement direction of the terminal device relative to the first network device, and/or the speed at which the terminal device leaves the coverage area of the first beam
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the smaller N is.
  • the N switching items include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device; the sending module is further configured to send a message including the information of the terminal device to the second network device , The message is used by the second network device to reserve resources for the terminal device within the time corresponding to the second handover item.
  • an embodiment of the present application provides a communication device, including a processor and a communication interface.
  • the communication interface is used to receive data to be processed and output processed data.
  • the processor is used to execute the data to be processed as in the first aspect or Any of the optional methods of the first aspect.
  • the communication device further includes a memory for storing program instructions.
  • the program instructions When the program instructions are executed by the processor, the program instructions cause any optional method such as the first aspect or the first aspect to be executed.
  • an embodiment of the present application provides a communication device, including a processor and a communication interface.
  • the communication interface is used to receive data to be processed and output processed data
  • the processor is used to execute the data to be processed as in the second aspect or Any of the optional methods of the second aspect.
  • the communication device further includes a memory for storing program instructions.
  • program instructions When the program instructions are executed by the processor, the second aspect or any one of the optional methods of the second aspect is executed.
  • an embodiment of the present application provides a communication device, including a logic circuit, an input interface, and an output interface.
  • the input interface is used to obtain the data to be processed;
  • the logic circuit is used to execute the data to be processed as in the first aspect or Any one of the optional methods of the first aspect obtains the processed data; and
  • the output interface is used to output the processed data.
  • an embodiment of the present application provides a communication device, including a logic circuit, an input interface, and an output interface.
  • the input interface is used to obtain the data to be processed;
  • the logic circuit is used to execute the data to be processed as in the second aspect or Any one of the optional methods of the second aspect obtains the processed data; and
  • the output interface is used to output the processed data.
  • an embodiment of the present application provides a chip, including an optional communication device such as the sixth aspect or the sixth aspect.
  • an embodiment of the present application provides a chip, which includes an optional communication device such as the seventh aspect or the seventh aspect.
  • an embodiment of the present application provides a chip, which includes the communication device according to the eighth aspect.
  • an embodiment of the present application provides a chip, including the communication device according to the ninth aspect.
  • embodiments of the present application provide a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement any optional method such as the first aspect or the first aspect .
  • embodiments of the present application provide a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement any optional method such as the second aspect or the second aspect .
  • an embodiment of the present application provides a communication system, including the terminal device of the fourth aspect and corresponding feasible implementation manners, and the first network device of the fifth aspect and corresponding feasible implementation manners.
  • Figure 1 is a schematic diagram of a scenario where UE implements beam switching in a LEO satellite system
  • Figure 2 is a schematic diagram of a 5G network architecture
  • FIG. 3 is a schematic diagram of an application scenario of a network handover method according to an embodiment of the application
  • FIG. 4 is a schematic diagram of a signaling interaction flow of a network handover method according to an embodiment of this application.
  • FIG. 5 is a schematic diagram of a movement trajectory of a terminal device in multiple beams according to an embodiment of the application
  • FIG. 6 is a schematic diagram of a motion trajectory of another terminal device in multiple beams according to an embodiment of the application.
  • FIG. 7 is a schematic diagram of a movement trajectory of a terminal device group in multiple beams according to an embodiment of the application.
  • FIG. 8 is a schematic diagram of a signaling interaction flow of another network handover method according to an embodiment of the application.
  • FIG. 9 is a schematic flowchart of a network handover method according to an embodiment of the application.
  • FIG. 10 is a schematic flowchart of another network handover method according to an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of a terminal device according to an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a first network device according to an embodiment of this application.
  • FIG. 13 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic diagram of the hardware structure of another communication device provided by an embodiment of the application.
  • the embodiments of this application provide methods for switching networks.
  • the methods of the embodiments of this application can be applied in long term evolution (LTE), and can also be applied in the fifth generation mobile communication (5 Generation, 5G) system, or in the future Mobile communication system.
  • LTE long term evolution
  • 5G fifth generation mobile communication
  • 5G fifth generation mobile communication
  • FIG. 2 is a schematic diagram of a typical network architecture of a satellite communication system.
  • the satellite communication system includes a terminal device 201, a satellite base station 202, a ground station 203, and a core network 204.
  • the core network 204 mainly includes a user plane function (UPF) unit 205, a mobility management function (access and mobility management function, AMF) unit 206, a session management function (session management function, SMF) unit 207, and a data network ( data network, DN) 208.
  • the terminal device 201 communicates with the satellite base station 202 through an air interface access network, and the satellite base station 202 is connected to the ground core network 204 through a wireless link (such as a next generation network (NG) interface).
  • NG next generation network
  • the terminal device 201 in the embodiments of the present application may refer to a user terminal (user equipment, UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, Wireless communication equipment, user agent or user device.
  • the terminal device 201 can access a satellite network through an air interface and initiate calls, surf the Internet and other services, and can be a mobile device that supports 5G new radio (NR).
  • NR 5G new radio
  • the terminal device 201 may be a mobile phone, a tablet computer, a portable notebook computer, a virtual ⁇ hybrid ⁇ augmented reality device, a navigation device, a ground base station (for example, a new air interface base station (NR nodeB, gNB)) and a ground station (ground station).
  • a ground base station for example, a new air interface base station (NR nodeB, gNB)
  • a ground station for example, a new air interface base station (NR nodeB, gNB)
  • GS session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • handheld devices with satellite communication functions computing devices Or other processing equipment connected to the wireless modem, in-vehicle equipment, wearable equipment, terminal equipment in 5G network, future evolution of public land mobile network (PLMN) or terminal equipment in other future communication systems Wait.
  • PLMN public land mobile network
  • the satellite base station 202 mainly provides wireless access services for the terminal device 201, dispatches wireless resources to the connected terminal device, and provides reliable wireless transmission protocols and data encryption protocols.
  • Satellite base stations refer to base stations that use artificial earth satellites and high-altitude aircraft as wireless communications, such as evolved base stations and 5G base stations.
  • the satellite base station may be a medium orbit (MEO) satellite and a low earth orbit (LEO) satellite, which may be a non-stationary orbit, or a high altitude platform (HAPS), etc.
  • MEO medium orbit
  • LEO low earth orbit
  • HAPS high altitude platform
  • the ground station 203 is mainly responsible for forwarding signaling and service data between the satellite base station 202 and the core network 204.
  • the ground station generally refers to the ground equipment installed on the surface of the earth (including on ships or airplanes) for satellite communication. It is mainly composed of a high-gain antenna system that can track artificial satellites, a microwave high-power transmitting system, a low-noise receiving system, and a power supply system.
  • the core network (CN) 204 is mainly used for user access control, billing, mobility management, session management, user security authentication, supplementary services, etc.
  • the core network 204 mainly includes a user plane function unit 205, an access and mobility management function unit 206, a session management function unit 207, and a data network 208.
  • the AMF network element is mainly responsible for services such as mobility management and access management.
  • the SMF network element is mainly responsible for session management, dynamic host configuration protocol functions, selection and control of user plane functions, etc.
  • the UPF network element is mainly responsible for externally connected to the data network and user plane data packet routing and forwarding, message filtering, and performing quality of service (QoS) control related functions.
  • QoS quality of service
  • the core network also includes other functional units, but they will not be listed one by one.
  • FIG. 3 is a schematic diagram of an application scenario in which the network switching method according to an embodiment of the application is applied to a 5G mobile satellite communication system.
  • the satellite 10 can provide communication services to the terminal device 20, and the satellite 10 can also be connected to the core network device 30 (the core network device 30 may include a ground station in the above-mentioned typical architecture, or include a satellite base station or core network service data capable of transmitting data and Network element of signaling function).
  • the core network device 30 may include a ground station in the above-mentioned typical architecture, or include a satellite base station or core network service data capable of transmitting data and Network element of signaling function).
  • Each satellite 10 can serve multiple cells 101, and each cell 101 can correspond to one or more beams 1011, each beam has a corresponding beam identifier, and each beam identifier can be used to uniquely identify the beam.
  • the terminal device 20 can switch between different beams.
  • the execution subject of the terminal device side method can be the terminal device or the device in the terminal device (it should be noted that the terminal device is described as an example in the embodiment provided in this application) .
  • the device in the terminal device may be a chip system, a circuit, or a module, etc., which is not limited in this application.
  • the execution subject for executing the method on the first network device side may be the first network device, or may be a device in the first network device.
  • the device in the first network device may be a chip system, a circuit, or a module, etc., which is not limited in this application.
  • the terminal device involved in the embodiments of the present application may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (dentral processing unit, CPU), a memory management unit (memory management unit, MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the first network device involved in the embodiment of the present application may be a satellite, a base station, a transmission reception point (TRP), or a core network device.
  • TRP transmission reception point
  • the first beam involved in the embodiment of the present application may be a beam that currently provides services for the terminal device, and the first network device provides services for the first beam.
  • the second beam involved in the embodiments of the present application may be the next configurable beam for the terminal device to switch connections (that is, the next beam to be switched), and the second beam may be served by the first network device or It is the second network device. It can be understood that the second beam is a relative concept.
  • the terminal device switches to the second beam, the second beam becomes the beam of the current service, and the next beam to be switched of the original second beam becomes the current second beam. The beam, the switching process and so on.
  • the beam switching involved in the embodiments of the present application may be that the mobile terminal switches from the current serving beam to the next beam to be switched to realize the switching from the serving beam to the configurable beam.
  • the N consecutive beam switching involved in the embodiment of the present application may be: the terminal device sequentially executes the process from the first handover to the Nth handover within a period of time. It can be understood that if the terminal device fails to switch successfully in any of the N handovers within this period of time, the continuous handover process can be ended.
  • FIG. 4 is a schematic diagram of the signaling interaction flow of a method for network handover provided by an embodiment of the application. As shown in FIG. 4, the signaling interaction of the method provided in this embodiment may include:
  • Step S401 The first network device obtains user information of the terminal device, where the terminal device is currently in the coverage area of the first beam.
  • the first network device in the embodiment of the present application is a network device that serves the first beam, or a network device that generates the first beam.
  • the terminal device is within the coverage of the first beam, or it can also be understood that the beam that the terminal device has accessed is the first beam.
  • the user information of the terminal device may be information that can be used to reflect the movement track of the terminal device relative to the first network device in a future period of time.
  • the user information may be information related to the location of the terminal device, or other information determined according to actual application scenarios. The embodiment of the present application does not specifically limit the user information.
  • the first network device can obtain the first network device through any positioning system such as global navigation satellite system (GNSS), global positioning system (GPS), or Beidou system.
  • GNSS global navigation satellite system
  • GPS global positioning system
  • Beidou system User information of terminal devices within a beam range.
  • the first network device may receive user information of the terminal device sent by the terminal device.
  • the terminal device may periodically send user information to the first network device.
  • the terminal device meets the conditions for sending the user information, it is triggered to send the user information of the terminal device to the first network device, so that the first network device can obtain the user information of the terminal device.
  • the first network device may send specific measurement configuration items to the terminal device through a measurement configuration message. After receiving the measurement configuration message, the terminal device may measure the user information of the terminal device and pass the measurement report (measurement report). The) message feeds back the measurement report information including the user information of the terminal device to the first network device.
  • the first network device may also obtain the user information of the terminal device in any manner according to actual application scenarios, which is not specifically limited in the embodiment of the present application.
  • Step S402 The first network device sends switching information to the terminal device.
  • the switching information includes N switching items. Any switching item includes time information and the identifier of the second beam.
  • the time information is used to indicate that the terminal device corresponds to any switching item.
  • the duration required for the coverage area of the second beam, N is a positive integer.
  • the handover information may be obtained by the first network device by predicting the movement track of the terminal device relative to the first network device in the future.
  • the handover information is used to instruct the terminal device to perform N times of handover beam switching, and N is a positive integer.
  • the switching information is only used to instruct the terminal device to perform beam switching.
  • the terminal device can determine the specific number of switching times according to the actual application scenario. For example, the terminal device can perform a complete N beam switching according to the instructions of the switching information.
  • the terminal device after receiving the handover information, the terminal device can only perform N-1 or N-2 beam switching less than N times.
  • the specific value of N can be determined according to actual application scenarios. There is no specific limitation.
  • the handover information may be calculated by the first network device according to the user information of the terminal device and the operation information of the first network device.
  • the operation information of the first network device may be used to feed back the operation trajectory of the satellite.
  • the operation information of the first network device is the operation information of the satellite.
  • the trajectory 40 is the trajectory of the satellite's moving direction.
  • the terminal device When the speed of the terminal device relative to the ground is low, the terminal device can be considered to be in a stationary state relative to the satellite, so as shown in the figure
  • the running trajectory of the terminal device relative to the first network device in the future time may be a trajectory 41 that is opposite to the trajectory 40.
  • the trajectory 41 can experience the coverage of multiple beams. Therefore, it can be predicted that the terminal device may perform beam switching in the experienced beam in the future.
  • Each beam that the terminal may experience in the future is collectively referred to as the second beam.
  • any of the handover items in the handover information includes the identifier of the second beam, and the length of time required for identifying the terminal device to pass through the coverage area of the second beam corresponding to the any handover item .
  • the speed of the terminal device relative to the ground is relatively high, for example, the terminal device is installed in a fast-moving device such as an airplane or high-speed rail
  • the movement speed and direction of the terminal device itself may affect the terminal device relative to the first network device.
  • the operating trajectory affects, therefore, it is possible to further predict the operating trajectory of the terminal device relative to the first network device in the future based on the motion speed and direction of the terminal device, as well as the operating condition of the first network device, so as to obtain adaptive switching information.
  • the embodiment of the present application does not specifically limit this.
  • N can be 1, and the terminal device can implement 1 beam switching based on the switching information.
  • the switching information contains the identifier of the second beam that the terminal device will switch into.
  • the terminal device does not need to perform procedures such as measurement, reporting user information, and selecting a target to switch beams with the first network device. Therefore, signaling overhead can be saved.
  • N it is equivalent to only predicting the latest beam switching for the terminal device, because the terminal device usually does not have a large deviation in the trajectory in a short time, so when N is 1, it is usually more accurate.
  • the switching information of the terminal device can in turn enable the terminal device to achieve high-accuracy beam switching.
  • N may also be a positive integer greater than or equal to 2, and the terminal device may implement N consecutive beam switching based on the switching information, thereby greatly saving signaling overhead.
  • the actual value of N can be determined according to actual application scenarios. For example, if the speed of the terminal device relative to the ground is low and adaptable, the value of N can be larger, and the speed of the terminal device relative to the ground is higher. The value is smaller, or the greater the speed at which the terminal device leaves the coverage area of the first beam, the smaller N, etc., this embodiment of the application does not specifically limit this.
  • a way to select the value of N is that the sum of the time information in the N handover items is less than the threshold ThresholdOfTimeTotal, that is, the total time that the terminal passes through the coverage area of the N second beams cannot exceed the ThresholdOfTimeTotal.
  • ThresholdOfTimeTotal may be determined according to the moving speed of the terminal device relative to the ground or the speed at which the terminal device leaves the coverage area of the first beam.
  • the moving speed and direction of the terminal device may be constantly changing, but for the sake of simplifying the solution, the embodiment of the present application may calculate the value of N according to the instantaneous value of the moving speed of the terminal device.
  • the terminal moving speed is TerminalMovingSpeed
  • the maximum offset of the terminal device's movement track caused by the terminal device moving speed is TrialOffsetMax
  • the time required to generate TrialOffsetMax is ThresholdOfTimeTotal.
  • the relationship between the three can satisfy the following formula:
  • the first network device can further determine the N value of the handover item issued to the terminal device according to the ThresholdOfTimeTotal.
  • each switching item may correspond to one beam switching of the terminal device.
  • the identifier of the second beam corresponding to the switching item may have a one-to-one correspondence with the second beam, and the identifier of the second beam may be mapped to the second beam.
  • the time information corresponding to the switching item is related to the coverage of the second beam and the speed of the terminal device.
  • the identifier of the second beam may be an identifier related to the identifier of the cell where the second beam is located and the number of the second beam in the cell.
  • Table 1 it shows a way of representing handover information. Each row can represent a handover item.
  • the cell ID is the identity of the cell where the second beam is located, and the beam ID is the number of the second beam in the cell.
  • the combination of cell ID and beam ID can be used as the identifier of the second beam, and time is time information.
  • a cell can have one or more beams.
  • the beam ID in each cell is defined as the serial number of the beam in the cell.
  • the beam ID can be defined from 0 in each cell.
  • the beam ID of cell ID 0 is 0 to n-1, and the beam ID can be It is a combination of cell ID 0 and sequence numbers 0 to n-1; the beam ID of cell ID 1 is 0 to n-1, then the beam ID can be a combination of cell ID 1 and sequence numbers 0 to n-1.
  • the identification of the second beam may be expressed in a manner such as a serial number.
  • all beams can be defined in order from 0, for example, the beam ID of cell ID 0 is 0 to n-1, and the beam ID of cell ID 1 is n to 2n-1.
  • the embodiment of the present application does not limit the specific form of the identification of the second beam.
  • Step S403 The terminal device performs beam switching according to the switching information.
  • the terminal device may perform beam switching according to each switching item in the switching information.
  • the second beams in the N handover items may all belong to the service range of the first network device, or they may belong to the service range of multiple network devices (for example, the second network device and the third network device).
  • the terminal device performs beam switching, it can respectively communicate with the network device served by the second beam to implement the beam switching process.
  • the second beams in the N handover items may all belong to the service range of the first network device.
  • the terminal device performing beam switching according to the switching information may be: for the first switching item among the N switching items, the terminal device switches to the second beam corresponding to the first switching item at the start time corresponding to the first switching item .
  • the first network device switches the terminal device to the second beam corresponding to the first switching item at the start time corresponding to the first switching item, so as to realize the switching of the terminal device in the second beam corresponding to the first switching item.
  • the first switching item may be any one of the N switching items.
  • the concept of the first switching item is introduced here, and the first switching item is not special. Meaning.
  • the starting time corresponding to the first switching item may be obtained according to the time when the terminal device starts the first switching and the time information of the previous switching item of the first switching item among the N switching items.
  • the time information of 2s (cell ID 0beam ID0) can be added at the moment when the terminal starts the first handover )
  • the start time of the handover item corresponding to cell ID 0 beam ID1 when the terminal device performs the beam handover corresponding to cell ID 1 beam ID 0, it can be increased (2s + 3s) at the time when the terminal starts the first handover (i.e. cell ID 0beam ID0 time information + cell ID 0beam ID1 time information) to obtain the start time of the switching item corresponding to cell ID 0beam ID1, and so on, so I won’t repeat it here.
  • the time when the terminal device starts the first handover may be related to the length of time the terminal device leaves the coverage area of the first beam.
  • the time when the terminal device leaves the coverage area of the first beam The duration may be calculated according to the position of the terminal device in the coverage area of the first beam when the terminal device receives the handover information, and the speed and direction of the terminal device relative to the first network device. Therefore, the terminal device can increase the time period for the terminal device to leave the coverage of the first beam at the moment when the handover information is received, and obtain the moment when the terminal device starts to perform the first handover.
  • the first network device when the first network device obtains the user information of the terminal device, it also calculates the time required for the terminal device to leave the coverage area of the first beam, and when the first network device sends the switching information to the terminal device, the terminal The time required for the device to leave the coverage of the first beam is sent to the terminal device, then the terminal device can receive the time required for the terminal device to leave the coverage of the first beam from the first network device, and then combine the time when the handover information is received The time when the terminal device starts the first handover.
  • the first network device may increase the time period for the terminal device to leave the coverage of the first beam on the basis of the time when the handover information is sent to the terminal device to obtain the moment when the first network device starts the first handover, and further
  • the start time corresponding to the second handover item, the start time corresponding to the Nth handover item, etc., are determined in a manner similar to that of the terminal device, which will not be repeated here.
  • both the terminal device and the first network device can obtain the start time corresponding to the first handover item in any other manner.
  • the definition of time information in Table 1 The switching time is changed to this time or defined as the switching time difference relative to the current time. Since the principle is similar, the embodiment of the present application does not specifically limit this.
  • the terminal device can switch to the second beam corresponding to the first handover item at the start time corresponding to the first handover item, and there is no need to perform measurement, report user information, and receive the handover beam assigned by the network device. Therefore, the signaling overhead in beam switching can be greatly saved. It can be understood that the beam switching in the embodiment of the present application requires high time information, and therefore, it is necessary to calculate the time information of each switching item with higher accuracy.
  • the terminal device performing beam switching according to the switching information may be: for the first switching item, the terminal device measures the terminal device in the second beam corresponding to the first switching item within the time information corresponding to the first switching item. Signal quality; when the signal quality is greater than the threshold, a handover request is sent to the first network device; the terminal device receives the handover response message sent by the first network device and switches to the second beam corresponding to the first handover item.
  • the terminal device before the terminal device performs the beam switching corresponding to the first switching item, it first measures the signal quality of the terminal device in the second beam corresponding to the first switching item (for example, RSRP or reference signal reception quality (reference signal reception quality)). received quality, RSRQ), and then when the signal quality is greater than the threshold, send a handover request to the first network device, and when the handover response message sent by the first network device is received, switch to the first handover item corresponding to the first handover item.
  • RSRP reference signal reception quality
  • RSRQ reference signal reception quality
  • the signal quality of the terminal device in the second beam corresponding to the first switching item when the signal quality of the terminal device in the second beam corresponding to the first switching item is good, it switches to the second beam corresponding to the first switching item, so that the terminal can be The device has better signal quality after switching to the second beam corresponding to the first switching item.
  • the terminal device may not initiate the beam switching corresponding to the switching item, thereby saving signaling resources to a greater extent.
  • the second beam in the N handover items may belong to the service range of multiple network devices (for example, the second network device and the third network device).
  • the network device served by the second beam corresponding to the second switching item is the second network device, and the second network device is a network device different from the first network device .
  • the first network device may send a message including the information of the terminal device to the second network device, and the message is used by the second network device to reserve resources for the terminal device within the time corresponding to the second handover item.
  • FIG. 6 a schematic diagram that a terminal device may perform beam switching in the second network device 61 is shown.
  • the terminal device is currently in the beam range of the first network device 60.
  • the terminal device may be in the beam range of the second network device 61 in the future.
  • the switching information may include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device 61.
  • the first network device 60 may send a message including the information of the terminal device to the second network device 61.
  • the information of the terminal device may be, for example, one or more of the following: the current quality information QS of the terminal device, the user of the terminal device Information, switching information, etc. Then the second network device can reserve resources for the terminal device within the time corresponding to the second handover item, and jointly implement the beam switching corresponding to the second handover item with the terminal device.
  • the terminal device performing beam switching according to the switching information may be: the terminal device switches to the second beam corresponding to the second switching item at the start time corresponding to the second switching item.
  • the second network device switches the terminal device to the second beam corresponding to the second switching item at the start time corresponding to the second switching item, so as to realize the switching of the terminal device in the second beam corresponding to the second switching item.
  • the method for obtaining the start time corresponding to the second switching item is the same as the method for obtaining the start time corresponding to the first switching item described above, which will not be repeated here.
  • the terminal device performing beam switching according to the switching information may be as follows: for the second switching item, the terminal device measures that the terminal device corresponds to the second switching item within the time corresponding to the second switching item The signal quality in the second beam; when the signal quality is greater than the threshold, send a handover request to the second network device; the terminal device receives the handover response message sent by the second network device and switches to the second corresponding to the second handover item Beam.
  • the terminal device before the terminal device performs the beam switching corresponding to the second switching item, it first measures the signal quality of the terminal device in the second beam corresponding to the second switching item (for example, RSRP or reference signal reception quality (reference signal reception quality)). received quality, RSRQ), and then when the signal quality is greater than the threshold, send a handover request to the second network device, and when the handover response message sent by the second network device is received, switch to the first handover item corresponding to the second handover item.
  • RSRP reference signal reception quality
  • RSRQ reference signal reception quality
  • the terminal device switches to the second beam corresponding to the second switching item only when the signal quality in the second beam corresponding to the second switching item is good, so that the terminal can be
  • the device has better signal quality after switching to the second beam corresponding to the second switching item.
  • the terminal device may not initiate the beam switching corresponding to the switching item, thereby saving signaling resources to a greater extent.
  • the terminal device is switched to the second network device
  • the second network device can send the information of the terminal device to the third network device to further realize the beam switching of the terminal device corresponding to the third switching item, and so on, so that the terminal device can be implemented in multiple network devices Handover in the beam.
  • the second switching item and the third switching item may both be the same switching item as the first switching item.
  • the first switching item and the second switching item in the embodiment of the present application The third switching item is only for distinguishing different embodiments, and does not limit the switching item itself.
  • the terminal device if the terminal device fails to switch successfully in any of the N beam switching, it can enter the process of reconfiguring the switching information, or after the terminal device has completed the N beam switching, it can enter the reconfiguration switching information the process of.
  • the first network device may update the user list in the first network device when the terminal device implements beam switching, for example, when the terminal device switches to the second beam, the terminal device is switched from the user list corresponding to the first beam In order to realize the complete beam switching process.
  • the embodiment of the present application does not specifically limit this.
  • the handover information is obtained based on the user information of the terminal device and/or the operation information of the first network device, and the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, The motion state information of the terminal device; wherein the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the terminal device leaves the first network device The speed of the coverage area of a beam.
  • the geographic location information of the terminal device may be used to feed back the current position of the terminal device within the coverage area of the first beam.
  • the motion state information of the terminal device can be used to feed back that the terminal device is in a low-speed or high-speed motion state, where the specific speed value of the low-speed or high-speed can be set according to actual application scenarios, which is not specifically limited in the embodiment of the present application. It can be understood that the faster the movement speed of the terminal device, the more likely the movement trajectory of the terminal device will deviate from the predicted movement trajectory over time, so a smaller value of N can be set. The slower the movement speed of the terminal device, the more likely the movement trajectory of the terminal device will conform to the predicted movement trajectory in a longer period of time, so a larger value of N can be set.
  • the motion state information of the terminal device can be used to feed back the direction of motion of the terminal device relative to the first network device.
  • the direction of motion of the terminal device relative to the first network device may affect the terminal device's motion relative to the first network device. Movement trajectory, therefore, more accurate handover information can be obtained according to the movement direction of the terminal device relative to the first network device.
  • the speed of the terminal device is high, more accurate handover information can be obtained in combination with the direction of movement of the terminal device relative to the first network device.
  • the motion state information of the terminal device can be used to feed back the speed at which the terminal device leaves the coverage area of the first beam, and the speed at which the terminal device leaves the coverage area of the first beam can reflect the movement of the terminal device relative to the first network device.
  • the faster the terminal device leaves the coverage area of the first beam a smaller N value can be set, and the slower the terminal device leaves the coverage area of the first beam, a larger N value can be set.
  • the default terminal device speed may be used, for example, the default terminal device speed relative to the ground is 0, etc., in this embodiment of the application There is no specific restriction on this.
  • the user information of the terminal device includes the motion state information of the terminal device.
  • the motion state information of the terminal device can determine which beams the terminal device may switch in, so that the subsequent application of this application depends on the user of the terminal device When the information determines the switching information, more accurate switching information can be obtained.
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the operating direction information of the first network device can be used to feed back the operating trend of the first network device relative to the terminal device, so that the operating track of the terminal device relative to the first network device can be further obtained.
  • the information of the coverage area of the adjacent beam of the coverage area of the first beam may be the second beam adjacent to the first beam and the coverage area of the second beam.
  • the second beam may be generated by the first network device, or generated by another network device different from the first network device, so that after obtaining the running trajectory of the terminal device relative to the first network device, the location of the running trajectory can be obtained.
  • the switching information may be carried in a radio resource control (radio resource control, RRC) message sent, for example, the mobility control Info (information element, IE) carried in the RRC message includes The switching information.
  • RRC radio resource control
  • the corresponding code may be:
  • each Beam-Switch-Info can represent a switching item
  • the Cell-Id and bwp-Id included in the Beam-Switch-Info can be used for the identification of the second beam
  • time-interval is time information
  • TA-Rate can be It is the uplink timing conversion rate of the second beam
  • Common-TA can be a general value set according to the actual situation
  • Doppler-Rate can be the Doppler conversion rate of the second beam
  • DlDopplerPreCompenValue can be the downlink Doppler compensation value
  • UlDopplerPreCompenValue can be Uplink Doppler compensation value
  • Polarization-Direction can indicate the direction of the second beam.
  • TA-Rate Common-TA
  • Doppler-Rate DlDopplerPreCompenValue
  • UlDopplerPreCompenValue and Polarization-Direction can be optionally set according to actual application conditions, which are not specifically limited in the embodiment of the present application.
  • the first network device may also divide multiple terminal devices that have the same or similar running tracks relative to the first network device into a terminal device group, and in the terminal device group, The switching information configured for each terminal device is the same.
  • the first network device may obtain user information of multiple terminal devices within the coverage of the first beam, and calculate the movement trajectory of each terminal device relative to the first network device in the future. Terminal devices with similar motion trajectories are divided into the first group 70. Further, the first network device may use the aforementioned calculation switching information according to the motion trajectory of any terminal device in the first group relative to the first network device in the future. In this way, the switching information of the first group is obtained, and the switching information is sent to each terminal device in the first group. After that, each terminal device can execute the switching process in the above-mentioned embodiment based on the switching information, which will not be repeated here.
  • mobile terminals that are close to the movement track of the first network device in the future can be grouped.
  • the switching information corresponding to the group only needs to be calculated once to obtain all the mobile terminals in the group.
  • the method of the embodiment of the present application can save the computing resources of the first network device.
  • the terminals that move at a high speed among multiple terminal devices for example, there are terminal devices such as those installed on high-speed rails, airplanes, etc. among multiple terminal devices, the terminals that move at high speed will be relatively in the future.
  • the movement track of the first network device is usually different from that of a low-speed moving or stationary terminal device. Therefore, when grouping, the high-speed moving terminal device may not be included in the grouping.
  • the terminal devices outside the group can be used to calculate the switching information in a manner of calculating the switching information separately.
  • the handover information in the first group is issued by the satellite through UE-Group-Beam-Switch signaling, and the corresponding code may be:
  • each Beam-Switch-Info can represent a switching item
  • the Cell-Id and bwp-Id included in the Beam-Switch-Info can be used for the identification of the second beam
  • time-interval is time information
  • TA-Rate can be It is the uplink timing conversion rate of the second beam
  • Common-TA can be a general value set according to the actual situation
  • Doppler-Rate can be the Doppler conversion rate of the second beam
  • DlDopplerPreCompenValue can be the downlink Doppler compensation value
  • UlDopplerPreCompenValue can be Uplink Doppler compensation value
  • Polarization-Direction can indicate the direction of the second beam.
  • TA-Rate Common-TA
  • Doppler-Rate DlDopplerPreCompenValue
  • UlDopplerPreCompenValue and Polarization-Direction can be optionally set according to actual application conditions, which are not specifically limited in the embodiment of the present application.
  • the unsuccessful terminal device can enter the process of reconfiguring the switch information, or in the first group After all the terminal devices in, have completed N beam switching, they can enter the process of regrouping and configuring switching information for multiple terminal devices.
  • the first network device may update the user list in the first network device when each terminal device in the first group implements beam switching, for example, when any terminal device switches to the second beam, the terminal device is switched from the first The user list corresponding to a beam is deleted, etc., in order to realize a complete beam switching process.
  • the embodiment of the present application does not specifically limit this.
  • the first network device is an example of a satellite.
  • the first network device may also be a core network device that communicates with satellites.
  • the satellite can only be used as a receiving and sending device, and the operation information of the first network device can be the operation information of the satellite communicating with the core network device.
  • Each step of beam switching in the embodiment is performed by the core network equipment, so that the computing load of the satellite can be reduced by the core network equipment.
  • the specific method for determining the beam switching is similar to the way that the first network equipment is a satellite, and will not be repeated here. .
  • the first network device in the embodiment of the application can obtain switching information according to the user information of the terminal device, etc., so that after the first network device sends the switching information to the terminal device, the terminal device can perform N beam switching according to the switching information
  • the first network device only needs to obtain user information once, and can configure the switching items for the subsequent N switchings in advance at one time.
  • each configuration switching information needs to be acquired.
  • the method of the embodiment of the present application can reduce the signaling process and overhead of the network, and thereby can reduce the response time of handover.
  • the N handover items include: a second handover item and an Nth handover item, etc., and the second beam corresponding to the second handover item is generated by the second network device.
  • the N handover item is generated by the Nth network device, and the terminal device will perform N consecutive beam switching according to the handover information as an example.
  • the signaling interaction of a network handover method provided by this embodiment of the application In the schematic flow chart, the signaling interaction of the method provided in this embodiment may include:
  • Step S801 The first network device obtains user information of the terminal device, where the terminal device is currently in the coverage area of the first beam.
  • Step S802 The first network device sends switching information to the terminal device.
  • the switching information includes N switching items. Any switching item includes time information and the identifier of the second beam. The time information is used to indicate that the terminal device corresponds to any switching item.
  • the duration required for the coverage area of the second beam, N is a positive integer.
  • step S801 and step S802 reference may be made to the record of the embodiment corresponding to FIG. 4, which will not be repeated here.
  • the difference from the embodiment in FIG. 4 is that this embodiment is illustrated by taking N switching items including: a second switching item and an Nth switching item.
  • Step S803 The first network device sends the information of the terminal device to the second network device.
  • Step S804 The second network device sends a response message to the first network device.
  • the second network device can reserve resources for the terminal device within the time corresponding to the second handover item.
  • Step S805 The second network device and the terminal device perform beam switching corresponding to the second switching item.
  • step S805 reference may be made to the record of beam switching between the second network device and the terminal device in the embodiment corresponding to FIG. 4, and details are not described herein again.
  • the terminal device can delete the first switching item to reduce resource occupation.
  • Step S806 The second network device sends a handover complete message to the first network device.
  • the second network device may send a handover complete message to the first network device, indicating that the terminal device has successfully switched from the first network device to the second network device.
  • the first network device may update the user list, which is not specifically limited in the embodiment of the present application.
  • Step S807 The N-1th network device sends the information of the terminal device to the Nth network device.
  • Step S808 The Nth network device sends a response message to the N-1th network device.
  • the second network device can take over the functions of the first network device, send the terminal device information to the third network device, and receive a response message from the third network device.
  • the N-1th network device can take over the function of the N-2th network device, send the terminal device information to the Nth network device, and receive the Nth network device.
  • the reply message of the network device can take over the function of the N-2th network device, send the terminal device information to the Nth network device, and receive the Nth network device.
  • Step S809 The Nth network device and the terminal device perform beam switching corresponding to the second switching item.
  • the beam switching corresponding to the Nth switching item between the Nth network device and the terminal device is similar to the process of beam switching between the second network device and the terminal device.
  • step S809 refer to the second network device and the terminal device in the embodiment corresponding to FIG. 4 The record of beam switching is not repeated here.
  • Step S810 The Nth network device sends a handover complete message to the second network device.
  • step S801 to step S810 there can be optional steps in step S801 to step S810.
  • steps corresponding to the dotted line as shown in FIG. 8 can all be optional steps, and can be appropriately selected according to the actual application. The embodiment of the present application does not specifically limit this.
  • the first network device in the embodiment of the application can obtain switching information according to the user information of the terminal device, etc., so that after the first network device sends the switching information to the terminal device, the terminal device can perform N beam switching according to the switching information
  • the first network device only needs to obtain user information once, and can configure the switching items for the subsequent N switchings in advance at one time.
  • each configuration switching information needs to be acquired.
  • the method of the embodiment of the present application can reduce the signaling process and overhead of the network, and thus can reduce the response time of the handover.
  • FIG. 9 it is a schematic flowchart of a network handover method provided in an embodiment of this application.
  • the method provided in this embodiment includes the following steps:
  • Step S901 The terminal device receives the handover information sent by the first network device.
  • the handover information includes N handover items.
  • Any handover item includes time information and the identifier of the second beam.
  • the time information is used to indicate that the terminal device has passed through any handover item.
  • Step S902 The terminal device performs beam switching according to the switching information.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the terminal device performs N beam switching according to the switching information, including: the terminal device performs N consecutive beam switching according to the switching information.
  • the terminal device performing beam switching according to the switching information includes: for the first switching item among the N switching items, the terminal device switches to the second beam corresponding to the first switching item at the start time corresponding to the first switching item.
  • the handover information is obtained based on the user information of the terminal device and the operation information of the first network device, and the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and motion state information of the terminal device; Wherein, the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the speed at which the terminal device leaves the coverage area of the first beam .
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the smaller N is.
  • the N switching items include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device; the terminal device performs N consecutive beam switching according to the switching information, including: for the second switching Item, the terminal device measures the signal quality of the terminal device in the second beam corresponding to the second switching item within the time corresponding to the second switching item; when the signal quality is greater than the threshold, sends a switching request to the second network device; the terminal The device receives the handover response message sent by the second network device and switches to the second beam corresponding to the second handover item.
  • the method further includes: the terminal device sends user information of the terminal device to the first network device.
  • the terminal device of this embodiment can be used to execute the method on the terminal device side in the embodiment corresponding to FIG. 4 or FIG. 8.
  • the specific implementation manner and technical effect are similar, and details are not described herein again.
  • FIG. 10 it is a schematic flowchart of another network handover method provided by an embodiment of this application.
  • the method provided in this embodiment includes the following steps:
  • Step S1001 The first network device obtains user information of the terminal device in the coverage area of the first beam.
  • Step S1002 The first network device sends switching information to the terminal device.
  • the switching information includes N switching items. Any switching item includes time information and the identifier of the second beam. The time information is used to indicate that the terminal device corresponds to any switching item. The time required for the coverage area of the second beam, the switching information is used to instruct the terminal device to perform beam switching, and N is a positive integer.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the terminal device performs N beam switching according to the switching information, including: the terminal device performs N consecutive beam switching according to the switching information.
  • the first network device switches the terminal device to the second beam corresponding to the first handover item at the start time corresponding to the first handover item.
  • the handover information is obtained based on the user information of the terminal device and the operation information of the first network device, and the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and motion state information of the terminal device; Wherein, the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the speed at which the terminal device leaves the coverage area of the first beam .
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the smaller N is.
  • the N switching items include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device; the method further includes: the first network device sends the information including the terminal device to the second network device The message is used by the second network device to reserve resources for the terminal device within the time corresponding to the second handover item.
  • the terminal device belongs to a first group, the first group includes multiple terminal devices, and the handover information sent by the first network device received by each terminal device in the first group is the same.
  • the method further includes: the first network device receives user information of the terminal device sent by the terminal device.
  • the first network device in this embodiment can be used to execute the method on the first network device side in the embodiment corresponding to FIG. 4 or FIG. 8.
  • the specific implementation and technical effects are similar, and details are not described herein again.
  • the terminal device includes a receiving module 1101 and a processing module 1102.
  • the receiving module is used to receive data sent by the first network device.
  • Handover information includes N handover items, any handover item includes: time information and the identifier of the second beam, the time information is used to indicate the time required for the terminal device to pass through the coverage area of the second beam corresponding to any handover item , N is a positive integer; the processing module is used for beam switching according to the switching information.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the processing module is specifically configured to perform N consecutive beam switching according to the switching information.
  • the processing module is specifically further configured to switch to the second beam corresponding to the first switching item at the initial moment corresponding to the first switching item for the first switching item among the N switching items.
  • the handover information is obtained based on user information of the terminal device and/or operation information of the first network device
  • the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and movement status of the terminal device Information; where the motion state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the direction of movement of the terminal device relative to the first network device, and/or the terminal device leaves the coverage area of the first beam
  • the operating information of the first network device includes at least one of the following: operating direction information of the first network device, and coverage area information of adjacent beams in the coverage area of the first beam.
  • the smaller N is.
  • the N handover items include a second handover item, and the second beam corresponding to the second handover item is generated by the second network device; the processing module is also specifically used for the second handover item, corresponding to the second handover item Measure the signal quality of the terminal device in the second beam corresponding to the second handover item within the time period; if the signal quality is greater than the threshold, send a handover request to the second network device; receive a handover response message sent by the second network device and Switch to the second beam corresponding to the second switching item.
  • the first network device in an embodiment of the present application includes a processing module 1201 and a sending module 1202.
  • the processing module is used to obtain the first network device.
  • the handover information includes N handover items, and any handover item includes: time information and identification of the second beam, time information It is used to indicate the time required for the terminal device to pass through the coverage area of the second beam corresponding to any switching item, and the switching information is used to instruct the terminal device to perform beam switching, and N is a positive integer.
  • N is 1.
  • N is an integer greater than or equal to 2
  • the switching information is used to instruct the terminal device to perform N consecutive beam switching.
  • the processing module is further configured to switch the terminal device to the second beam corresponding to the first handover item at the initial moment corresponding to the first handover item for the first handover item among the N handover items.
  • the terminal device belongs to the first group, the first group includes a plurality of terminal devices, and each terminal device in the first group receives the same handover information sent by the first network device.
  • the handover information is obtained based on user information and/or operation information of the first network device
  • the user information of the terminal device includes at least one of the following: geographic location information of the terminal device, and motion state information of the terminal device; where ,
  • the movement state information of the terminal device is used to indicate the speed of the terminal device relative to the ground, and/or the movement direction of the terminal device relative to the first network device, and/or the speed at which the terminal device leaves the coverage area of the first beam
  • the operation information of the first network device includes at least one of the following: operation direction information of the first network device, and coverage area information of adjacent beams of the coverage area of the first beam.
  • the smaller N is.
  • the N switching items include a second switching item, and the second beam corresponding to the second switching item is generated by the second network device; the sending module is further configured to send a message including the information of the terminal device to the second network device , The message is used by the second network device to reserve resources for the terminal device within the time corresponding to the second handover item.
  • FIG. 13 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • the communication device includes: a processor 131 and a communication interface 132.
  • the processor 131 and the communication interface 132 may communicate via a communication bus.
  • the communication interface 132 is used to receive data to be processed and output processed data.
  • the processor is configured to execute any method shown in the embodiment corresponding to FIG. 4 or FIG. 8 on the data to be processed.
  • the data to be processed may be switching information in the embodiment of the application, etc.
  • the processed data may be switching data corresponding to each switching item.
  • the data to be processed may be user information of the terminal device, etc., and the processed data may be switching information, etc.
  • the communication interface 132 may also include a transmitter and/or a receiver.
  • the foregoing processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs). )Wait.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the communication device further includes a memory 133 for storing program instructions.
  • the program instructions When the program instructions are executed by the processor, the method shown in the embodiment shown in FIG. 4 or FIG. 8 is executed.
  • the memory and the processor may be independent units, or may be integrated, which is not specifically limited in the embodiment of the present application.
  • FIG. 14 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • the communication device includes: a logic circuit 141, an input interface 143, and an output interface 142, where: the input interface is used to obtain the data to be processed; the logic circuit is used to execute the data to be processed as shown in FIG. 4 or FIG. The method shown in the embodiment is shown to obtain the processed data; and the output interface is used to output the processed data.
  • the data to be processed may be switching information in the embodiment of the application, etc., and the processed data may be switching data corresponding to each switching item.
  • the data to be processed may be user information of the terminal device, etc., and the processed data may be switching information, etc.
  • the embodiment of the present application also provides a chip, which includes any one of the above-mentioned communication devices, or is used to support the communication device to realize the functions shown in the embodiments of the present application (for example, the first network device obtains user information of the terminal device, wherein the terminal The device is currently in the coverage area of the first beam; the first network device sends handover information to the terminal device.
  • the handover information includes N handover items, and any handover item includes: time information and the identifier of the second beam.
  • the time information is used to indicate The time required for the terminal device to pass through the coverage area of the second beam corresponding to any switching item, N is a positive integer; the terminal device performs beam switching according to the switching information, etc.).
  • the chip can be specifically used in a chip system, and the chip system can be used by Chip composition can also include chips and other discrete devices.
  • the chip in the terminal device implements the above method
  • the chip includes a processing unit.
  • the chip may also include a communication unit.
  • the processing unit may be, for example, a processor.
  • the communication unit for example, It can be an input/output interface, pin or circuit, etc.
  • the processing unit performs all or part of the actions performed by each processing module in the embodiments of the present application, and the communication unit can perform corresponding receiving or sending actions, for example, receiving configuration signaling sent by a network device.
  • An embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement the method shown in the embodiment shown in FIG. 4 or FIG. 8.
  • An embodiment of the present application also provides a communication system, including the terminal device as shown in FIG. 11 and the first network device as shown in FIG. 12.
  • the disclosed device and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It 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, and may be in 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, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • These computer program instructions can be provided to the processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing equipment can be used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请实施例提供一种网络的切换方法和装置，当前为终端设备提供服务的波束为第一波束，第一波束为第一网络设备产生的，第一网络设备获取终端设备的用户信息，进而第一网络设备可以根据用户信息等得到切换信息，使得第一网络设备向终端设备发送切换信息后，终端设备可以根据切换信息进行波束切换，在该波束切换中，不需要执行如现有技术的测量、上报用户信息、接收网络设备分配的切换波束等流程，因此可以减少网络的信令流程和开销，进而可以减少切换的响应时间。

Description

网络的切换方法和装置
本申请要求于2019年11月08日提交中国专利局、申请号为201911086384.2、申请名称为“网络的切换方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术，尤其涉及一种网络的切换方法和装置。
背景技术
卫星通信具有覆盖面广、组网灵活、部署方便和不受地理条件限制等优点，使得卫星通信得到较多发展。在卫星通信的场景中，包括低轨道(low earth orbit，LEO)卫星系统、中轨道(medium earth orbit，MEO)卫星系统、高轨道(high earth orbit，HEO)卫星系统、同步轨道(geostationary earth orbit,GEO)卫星系统等。由于LEO卫星距离地球表面较近，传播时延较短，所遭受的路径损耗也较小，因此LEO卫星具有更广泛的应用。LEO卫星系统中，由于LEO卫星的高速运动，用户终端(user equipment，UE)需要频繁地在不同的卫星波束间切换，才能保障业务的连续性。示例性的，LEO 600km卫星服务中，UE在一个波束的覆盖区域内的持续时间可能不足3s。
现有技术中，示例性的，如图1所示，UE在LEO卫星系统中实现波束切换的可能方案为：LEO卫星发送一个或多个的包括信道状态信息(Channel-State Information RS，CSI-RS)的波束(图1中为4个波束)，UE对CSI-RS参考信号测量，得到多个(图1中为4个)参考信号接收功率(Reference Signal Receiving Power，RSRP)，UE向LEO卫星上报信号质量测量的结果，LEO卫星基于接收到的质量测量的结果，选择RSRP最强的CSI-RS对应的波束进行下行信道发送，当UE在服务波束测量的RSRP低于门限值时，LEO卫星告知UE新的波束信息，从而完成波束间的切换。
但是，现有技术UE在LEO卫星系统中实现波束切换的方法信令开销较大，影响使用效率。
发明内容
本申请实施例提供一种网络的切换方法和装置，以降低卫星通信中波束切换带来的信令开销。
第一方面，本申请实施例提供一种网络的切换方法，终端设备接收第一网络设备发送的切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数。终端设备根据切换信息进行波束切换。本申请实施例 中，当前为终端设备提供服务的波束为第一波束，第一波束为第一网络设备产生的，第一网络设备获取终端设备的用户信息，进而第一网络设备可以根据用户信息等得到切换信息，使得第一网络设备向终端设备发送切换信息后，终端设备可以根据切换信息进行波束切换，在该波束切换中，不需要执行如现有技术的测量、上报用户信息、接收网络设备分配的切换波束等流程，因此可以减少网络的信令流程和开销，进而可以减少切换的响应时间。
可选的，N为1。在N为1时，相当于只为终端设备预测了最近一次的波束切换，因为终端设备在较短时间内轨迹通常不会发生较大偏差，因此N为1时通常能够得到较为准确的切换信息，进而可以使得终端设备实现准确度较高的波束切换。
可选的，N为大于或等于2的整数，终端设备根据切换信息进行N次波束切换，包括：终端设备根据切换信息进行连续的N次波束切换。则终端设备可以基于该切换信息实现连续的N次波束切换，进而可以较大程度的节约信令开销。
可选的，终端设备根据切换信息进行波束切换，包括：针对N个切换项中的第一切换项，终端设备在第一切换项对应的起始时刻切换入第一切换项对应的第二波束。因为终端设备可以在第一切换项对应的起始时刻切换入第一切换项对应的第二波束，不需要进行测量、上报用户信息、接收网络设备分配的切换波束等流程，因此能较大程度的节约波束切换中的信令开销。
可选的，切换信息为根据终端设备的用户信息和第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度。可选的，第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。终端设备离开第一波束的覆盖区域的速度，终端设备的运动轨迹越有可能会随着时间偏离预测的运动轨迹，因此可以设置较小的N值，从而得到较准确的切换信息。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；终端设备根据切换信息进行连续的N次波束切换，包括：针对第二切换项，终端设备在第二切换项对应的时间内测量终端设备在第二切换项对应的第二波束中的信号质量；在信号质量大于阈值的情况下，向第二网络设备发送切换请求；终端设备接收第二网络设备发送的切换响应消息并切换到第二切换项对应的第二波束。这样，在终端设备在第一切换项对应的第二波束中的信号质量较好的情况下，才切换到第一切换项对应的第二波束，从而可以使得终端设备切换到第一切换项对应的第二波束后有较好的信号质量。
可选的，还包括：终端设备向第一网络设备发送终端设备的用户信息。
第二方面，本申请实施例提供一种网络的切换方法，第一网络设备获取第一波束的覆盖区域内的终端设备的用户信息。第一网络设备向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，切换信 息用于指示终端设备进行波束切换，N为正整数。
可选的，N为1。
可选的，N为大于或等于2的整数，终端设备根据切换信息进行N次波束切换，包括：终端设备根据切换信息进行连续的N次波束切换。
可选的，针对N个切换项中的第一切换项，第一网络设备在第一切换项对应的起始时刻将终端设备切换入第一切换项对应的第二波束。
可选的，切换信息为根据终端设备的用户信息和第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度。
可选的，第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；方法还包括：第一网络设备向第二网络设备发送包括终端设备的信息的消息，消息用于第二网络设备在第二切换项对应的时间内为终端设备预留资源。
可选的，终端设备属于第一分组，第一分组中包括多个终端设备，第一分组中的各终端设备接收到的第一网络设备发送的切换信息相同。
可选的，还包括：第一网络设备接收终端设备发送的终端设备的用户信息。
第三方面，本申请实施例提供一种网络的切换方法，第一网络设备获取终端设备的用户信息，其中终端设备当前处于第一波束的覆盖区域内；第一网络设备向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；终端设备根据切换信息进行波束切换。
第四方面，本申请实施例提供一种终端设备，包括：接收模块，用于接收第一网络设备发送的切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；处理模块，用于根据切换信息进行波束切换。
可选的，N为1。
可选的，N为大于或等于2的整数，处理模块，具体用于根据切换信息进行连续的N次波束切换。
可选的，处理模块，具体还用于针对N个切换项中的第一切换项，在第一切换项对应的起始时刻切换入第一切换项对应的第二波束。
可选的，切换信息为根据终端设备的用户信息和/或第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度；第一网络设备的运行信息包括下述至少一项：第一网络设备的 运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；处理模块，具体还用于针对第二切换项，在第二切换项对应的时间内测量终端设备在第二切换项对应的第二波束中的信号质量；在信号质量大于阈值的情况下，向第二网络设备发送切换请求；接收第二网络设备发送的切换响应消息并切换到第二切换项对应的第二波束。
第五方面，本申请实施例提供了一种第一网络设备，包括：处理模块，用于获取第一波束的覆盖区域内的终端设备的用户信息；发送模块，用于向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，切换信息用于指示终端设备进行波束切换，N为正整数。
可选的，N为1。
可选的，N为大于或等于2的整数，切换信息用于指示终端设备进行连续的N次波束切换。
可选的，处理模块，还用于针对N个切换项中的第一切换项，在第一切换项对应的起始时刻将终端设备切换入第一切换项对应的第二波束。
可选的，终端设备属于第一分组，第一分组中包括多个终端设备，第一分组中的各终端设备接收到的第一网络设备发送的切换信息相同。
可选的，切换信息为根据用户信息和/或第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度；第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；发送模块，还用于向第二网络设备发送包括终端设备的信息的消息，消息用于第二网络设备在第二切换项对应的时间内为终端设备预留资源。
第六方面，本申请实施例提供一种通信装置，包括处理器和通信接口，通信接口用于接收待处理的数据和输出处理后的数据，处理器用于对待处理的数据执行如第一方面或第一方面的任一种可选的方法。
可选的，通信装置还包括存储器，用于存储程序指令，程序指令由处理器执行时，使得如第一方面或第一方面的任一种可选的方法被执行。
第七方面，本申请实施例提供一种通信装置，包括处理器和通信接口，通信接口用于接收待处理的数据和输出处理后的数据，处理器用于对待处理的数据执行如第二方面或第二方面的任一种可选的方法。
可选的，通信装置还包括存储器，用于存储程序指令，程序指令由处理器执行时，使得如第二方面或第二方面的任一种可选的方法被执行。
第八方面，本申请实施例提供一种通信装置，包括逻辑电路、输入接口和输出接口，其中：输入接口用于获取待处理的数据；逻辑电路用于对待处理的数据执行如第一方面或第一方面的任一种可选的方法，得到处理后的数据；以及输出接口用于输出处理后的数据。
第九方面，本申请实施例提供一种通信装置，包括逻辑电路、输入接口和输出接口，其中：输入接口用于获取待处理的数据；逻辑电路用于对待处理的数据执行如第二方面或第二方面的任一种可选的方法，得到处理后的数据；以及输出接口用于输出处理后的数据。
第十方面，本申请实施例提供一种芯片，包括如第六方面或第六方面任一种可选的通信装置。
第十一方面，本申请实施例提供一种芯片，包括如第七方面或第七方面任一种可选的的通信装置。
第十二方面，本申请实施例提供一种芯片，包括如第八方面的通信装置。
第十三方面，本申请实施例提供一种芯片，包括如第九方面的通信装置。
第十四方面，本申请实施例提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机程序，计算机程序用于实现如第一方面或第一方面的任一种可选的方法。
第十五方面，本申请实施例提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机程序，计算机程序用于实现如第二方面或第二方面的任一种可选的方法。
第十六方面，本申请实施例提供一种通信系统，包括第四方面及对应的可行实施方式的终端设备以及第五方面及对应的可行实施方式的第一网络设备。
应当理解的是，本申请实施例的第二方面至第十六方面与本申请实施例的第一方面的技术方案相对应，各方面及对应的可行实施方式所取得的有益效果相似，不再赘述。
附图说明
图1为一种UE在LEO卫星系统中实现波束切换的场景示意图；
图2为一种5G网络架构示意图；
图3为本申请实施例的网络的切换方法的应用场景示意图；
图4为本申请实施例的一种网络的切换方法的信令交互流程示意图；
图5为本申请实施例的一种终端设备在多个波束中的运动轨迹示意图；
图6为本申请实施例的另一种终端设备在多个波束中的运动轨迹示意图；
图7为本申请实施例的一种终端设备组在多个波束中的运动轨迹示意图；
图8为本申请实施例的另一种网络的切换方法的信令交互流程示意图；
图9为本申请实施例的一种网络的切换方法的流程示意图；
图10为本申请实施例的另一种网络的切换方法的流程示意图；
图11为本申请实施例的一种终端设备的结构示意图
图12为本申请实施例的一种第一网络设备的结构示意图；
图13为本申请实施例提供的一种通信装置的硬件结构示意图；
图14为本申请实施例提供的另一种通信装置的硬件结构示意图。
具体实施方式
本申请实施例提供网络的切换方法，本申请实施例的方法可以应用在长期演进(long term evolution，LTE)中，也可以应用在第五代移动通信(5 Generation，5G)系统中，或者未来的移动通信系统。
图2为卫星通信系统典型网络架构的示意图，如图2所示，卫星通信系统包括终端设备201、卫星基站202、地面站203和核心网204。核心网204主要包括用户面功能(user plane function，UPF)单元205、移动性管理功能(access and mobility management function，AMF)单元206、会话管理功能(session management function，SMF)单元207和数据网络(data network，DN)208。终端设备201通过空口接入网络与卫星基站202通信，卫星基站202通过无线链路(如下一代网络(next generation，NG)接口)与地面的核心网204联接。同时，在卫星基站202之间也存在无线链路，通过Xn接口完成卫星基站与卫星基站之间的信令交互和用户数据传输。图2中的各个网元以及接口说明如下：
终端设备201在本申请实施例中可以指用户终端(user equipment，UE)、接入终端、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。终端设备201可以通过空口接入卫星网络并发起呼叫，上网等业务，可以是支持5G新空口(NR，new radio)的移动设备。典型的，终端设备201可以是移动电话、平板电脑、便携式笔记本电脑、虚拟\混合\增强现实设备、导航设备、地面基站(例如：新空口基站(NR nodeB，gNB))和地面站(ground station，GS)、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)、具有卫星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、未来演进的公用陆地移动通信网络(public land mobile network，PLMN)或未来的其他通信系统中的终端设备等。
卫星基站202主要为终端设备201提供无线接入服务，调度无线资源给接入的终端设备，提供可靠的无线传输协议和数据加密协议等。卫星基站是指将人造地球卫星和高空飞行器等作为无线通信的基站，例如演进型基站和5G基站等。卫星基站可以是可以是非静止轨道的中轨道(medium earth orbit，MEO)卫星和低轨道(low earth orbit，LEO)卫星，还可以是高空通信平台(high altitude platform station，HAPS)等。
在本申请实施例中，地面站(ground station)203主要负责转发卫星基站202和核心网204之间的信令和业务数据。地面站一般是指设置在地球表面(包括设置在船舶或者飞机上)上进行人造卫星通信的地面设备。主要由可跟踪人造卫星的高增益天线系统、微波大功率发射系统、低噪声接收系统和电源系统等组成。
核心网(core network，CN)204主要用于用户接入控制、计费，移动性管理，会话管理，用户安全认证，补充业务等。在本申请实施例中，核心网204主要包括用户面功能单元205、接入与移动管理功能单元206、会话管理功能单元207、数据网 络208。AMF网元主要负责移动性管理、接入管理等服务。SMF网元主要负责会话管理、动态主机配置协议功能、用户面功能的选择和控制等。UPF网元主要负责对外连接到数据网络以及用户面的数据包路由转发、报文过滤、执行服务质量(quality of service，QoS)控制相关功能等。需要说明的是，这些功能单元可以独立工作，也可以组合在一起实现某些控制功能，如对终端设备的接入鉴权、安全加密、位置注册等接入控制和移动性管理功能，以及用户面传输路径的建立、释放和更改等会话管理功能。核心网中还包括其他功能单元，但不再一一列举。
示例的，图3为本申请实施例的网络的切换方法应用于5G移动卫星通信系统的应用场景示意图。
卫星10可以向终端设备20提供通信服务，卫星10还可以连接到核心网设备30(该核心网设备30可以包括上述典型架构中的地面站，或者包括能够实现转发卫星基站或核心网业务数据和信令功能的网元)。每个卫星10可以服务多个小区101，每个小区101中可以对应有一个或多个波束(beam)1011，每个波束有对应的波束标识，每个波束标识可以用于唯一标识该波束。终端设备20可以在不同的波束之实现切换。
本申请实施例中，执行终端设备侧方法的执行主体可以是终端设备，也可以是终端设备中的装置(需要说明的是，在本申请提供的实施例中以终端设备为例进行描述的)。示例性地，终端设备中的装置可以是芯片系统、电路或者模块等，本申请不作限制。
本申请实施例中，执行第一网络设备侧方法的执行主体可以是第一网络设备，也可以是第一网络设备中的装置。示例性地，第一网络设备中的装置可以是芯片系统、电路或者模块等，本申请不作限制。
本申请实施例所涉及的终端设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(dentral processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
本申请实施例涉及的第一网络设备可以为卫星、基站、发送接收点(transmission reception point，TRP)或核心网设备等。
本申请实施例所涉及的第一波束可以是当前为终端设备提供服务的波束，为第一波束提供服务的是第一网络设备。
本申请实施例所涉及的第二波束可以是终端设备下一个可能切换连接的可配置波束(也即下一个待切换的波束)，为第二波束提供服务的可以是第一网络设备，也可以是第二网络设备。可以理解，第二波束是一个相对概念，当终端设备切换到第二波束后，该第二波束就成为当前服务的波束，而原第二波束的下一个待切换的波束就成为现在的第二波束，切换过程依次类推。
本申请实施例所涉及的波束切换可以是移动终端从当前的服务波束，切换连接到 下一个待切换的波束，实现由服务波束向可配置波束的切换。
本申请实施例所涉及的连续的N次波束切换可以是：终端设备在一段时间内，依次执行从第1次切换到第N次切换的过程。可以理解，若在该段时间内，终端设备在该N次切换中有任一次没有切换成功，则可以结束该次连续切换过程。
下面以具体地实施例对本申请的技术方案以及本申请的技术方案如何解决上述技术问题进行详细说明。下面这几个具体的实施例可以独立实现，也可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。
图4为本申请实施例提供的一种网络的切换方法的信令交互流程示意图，如图4所示，本实施例提供的方法的信令交互可以包括：
步骤S401：第一网络设备获取终端设备的用户信息，其中终端设备当前处于第一波束的覆盖区域内。
本申请实施例中第一网络设备是为第一波束服务的网络设备，或生成第一波束的网络设备。终端设备处于第一波束的覆盖范围内，或者也可以理解为终端设备已接入的波束为第一波束。
终端设备的用户信息可以是能够用于反映终端设备在未来时间段内相对于第一网络设备的运动轨迹的信息。示例性的，用户信息可以是与终端设备的位置等相关的信息，或者根据实际的应用场景确定的其他信息，本申请实施例对用户信息不做具体限定。
一种可能的实现方式中，第一网络设备可以通过全球卫星导航系统(global navigation satellite system，GNSS)、全球定位系统(global positioning system，GPS)、或北斗系统等任意的定位系统，获取处于第一波束范围内的终端设备的用户信息。
另一种可能的实现方式中，第一网络设备可以接收终端设备发送的终端设备的用户信息。示例性的，终端设备可以周期性的向第一网络设备发送用户信息。或者，终端设备符合发送用户信息的条件时，触发向第一网络设备发送终端设备的用户信息，从而使得第一网络设备能够获取终端设备的用户信息。或者，第一网络设备可以通过测量配置(measurement configuration)消息将具体的测量配置项发送给终端设备，终端设备接收到测量配置消息后，可以测量终端设备的用户信息，并通过测量报告(measurement report)消息将包括该终端设备的用户信息的测量报告信息反馈至第一网络设备。
可以理解，第一网络设备还可以根据实际的应用场景采用任意方式获取终端设备的用户信息，本申请实施例对此不作具体限定。
步骤S402：第一网络设备向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数。
本申请实施例中，切换信息可以是第一网络设备预测终端设备在未来时间内相对于第一网络设备的运动轨迹得到的。切换信息用于指示该终端设备进行N次切换波束切换，N为正整数。可以理解，切换信息只是用于指示终端设备进行波束切换，实际应用中终端设备可以根据实际的应用场景确定具体的切换次数，示例的，终端设备 可以根据切换信息的指示，进行完整的N次波束切换，终端设备也可以在接收到切换信息后，只是进行N-1次或N-2次等小于N次的波束切换，N的具体取值可以根据实际应用场景确定，本申请实施例对此不作具体限定。
一种可能的实现方式中，切换信息可以是第一网络设备根据终端设备的用户信息和第一网络设备的运行信息计算得到的。第一网络设备的运行信息可以用于反馈卫星的运行轨迹，示例性的，在第一网络设备为卫星的情况下，第一网络设备的运行信息为卫星的运行信息。
示例性的，如图5所示，轨迹40为卫星运动方向轨迹，在终端设备相对于地面的速度较低的情况下，相对于卫星而言，终端设备可以认为处于静止状态，因此，如图5所示，终端设备在未来时间内相对于第一网络设备的运行轨迹可以为与轨迹40反向的轨迹41。该轨迹41可以经历多个波束覆盖的范围，因此，可以预测终端设备在未来可能要在经历的波束中进行波束切换，将终端未来可能经历的每个波束统称为第二波束，适应的，可以得到包括N个切换项的切换信息，该切换信息中的任一个切换项包括第二波束的标识，以及用于标识终端设备经过该任一个切换项对应的第二波束的覆盖区域所需的时长。
可以理解，如果终端设备相对于地面的速度较高，例如终端设备设置于飞机或高铁等快速移动的设备中，则终端设备自身的运动速度和运动方向可能对终端设备相对于第一网络设备的运行轨迹造成影响，因此可以进一步根据终端设备的运动速度和运动方向，以及第一网络设备的运行情况预测终端设备在未来时间内相对于第一网络设备的运行轨迹，进而得到适应的切换信息，本申请实施例对此不作具体限定。
本申请实施例中，N可以为1，则终端设备可以基于该切换信息实现1次波束切换，该1次波束切换中，因为切换信息中包含了终端设备将要切换进入的第二波束的标识，终端设备不需要与第一网络设备执行测量、上报用户信息、选择目标切换波束等流程，因此，可以节约信令开销。可以理解，在N为1时，相当于只为终端设备预测了最近一次的波束切换，因为终端设备在较短时间内轨迹通常不会发生较大偏差，因此N为1时通常能够得到较为准确的切换信息，进而可以使得终端设备实现准确度较高的波束切换。
本申请实施例中，N也可以为大于或等于2的正整数，则终端设备可以基于该切换信息实现连续的N次波束切换，进而可以较大程度的节约信令开销。N的实际取值可以根据实际的应用场景进行确定，例如，终端设备相对于地面的速度较低，适应的，N的取值可以较大，终端设备相对于地面的速度较高，N的取值较小，或者，终端设备离开第一波束的覆盖区域的速度越大N越小，等，本申请实施例对此不作具体限定。
示例性的，一种N值的取值方式为，N个切换项中的时间信息的和小于门限值ThresholdOfTimeTotal，即终端经过N个第二波束的覆盖区域的总时长不能超过ThresholdOfTimeTotal。ThresholdOfTimeTotal可以根据终端设备相对于地面的移动速度或终端设备离开第一波束的覆盖范围的速度来确定。
实际应用中，终端设备移动速度及方向可能是不断变化的，但是出于简化方案考虑，本申请实施例可以根据终端设备移动速度瞬时值来进行计算N值。比如终端移 动速度为TerminalMovingSpeed，由终端设备移动速度带来的终端设备移动轨迹的偏移量最大值为TrialOffsetMax，则产生TrialOffsetMax所需时间即为ThresholdOfTimeTotal，例如三者的关系可以满足下述公式：
Figure PCTCN2020120436-appb-000001
比如TrialOffsetMax取500m，终端移动速度为20km/h，则ThresholdOfTimeTotal为90s，则第一网络设备可根据该ThresholdOfTimeTotal，进一步确定下发给终端设备的切换项的N值。
本申请实施例中，每个切换项可以对应一次终端设备的波束切换。切换项对应的第二波束的标识可以与第二波束是一一对应的关系，通过第二波束的标识可以映射到第二波束。切换项对应的时间信息与第二波束的覆盖范围以及终端设备的速度有关。
示例性的，第二波束的标识可以是与第二波束所在的小区的标识以及第二波束在小区中的编号相关的标识。例如，如表1所示，示出了一种切换信息的表示方式，每一行可以表示一个切换项，cell ID为第二波束所在的小区的标识，beam ID为第二波束在小区中的编号，cell ID和beam ID的组合可以作为第二波束的标识，time为时间信息。
表1
cell ID beam ID time(s)
0 0 2
0 1 3
1 0 1.5
… … …
其中，一个小区(cell)可以有一个或多个beam。每个cell中的beam ID定义为beam在cell中的序号，例如可以在每个Cell内从0开始定义beam ID，比如cell ID 0的beam ID为0～n-1，则该beam的标识可以为cell ID 0与序号0～n-1的组合；Cell ID 1的beam ID为0～n-1，则该beam的标识可以beam ID为cell ID 1与序号0～n-1的组合。
或者，另一种可能的实现方式中，第二波束的标识可以是采用序列号等一种方式表示的。例如，可以将所有的beam按照顺序从0开始定义，比如cell ID 0的Beam ID为0～n-1,cell ID 1的Beam ID为n～2n-1。本申请实施例对第二波束的标识的具体形式不作限定。
步骤S403：终端设备根据切换信息进行波束切换。
本申请实施例中，终端设备可以根据切换信息中的各切换项进行波束切换。需要说明的是，N个切换项中的第二波束可以同属于第一网络设备服务的范围，也可以分别属于多个网络设备(例如第二网络设备、第三网络设备)服务的范围，在终端设备进行波束切换时，可以分别与第二波束服务的网络设备进行通信，实现波束切换的过程。
第一种可能的实现方式中，N个切换项中的第二波束可以同属于第一网络设备服务的范围。
示例性的，终端设备根据切换信息进行波束切换可以为，针对N个切换项中的第一切换项，终端设备在第一切换项对应的起始时刻切换入第一切换项对应的第二波束。适应的，第一网络设备在第一切换项对应的起始时刻将终端设备切换入第一切换项对应的第二波束，从而实现终端设备在第一切换项对应的第二波束中的切换。
需要说明的是，本申请实施例中，第一切换项可以是N个切换项中的任一个切换项，在此为了便于描述，引入第一切换项的概念，该第一切换项并没有特殊的含义。
本申请实施例中，第一切换项对应的起始时刻可以根据终端设备开始进行第一次切换的时刻，以及N个切换项中该第一切换项在之前的切换项的时间信息得到。示例性的，以表1中的切换项为例，在终端设备进行cell ID 0beam ID1对应的的波束切换时，可以在终端开始进行第一次切换的时刻增加2s(cell ID 0beam ID0的时间信息)，得到cell ID 0beam ID1对应的切换项的起始时刻；在终端设备进行cell ID 1beam ID0对应的波束切换时，可以在终端开始进行第一次切换的时刻增加(2s+3s)(即cell ID 0beam ID0的时间信息+cell ID 0beam ID1的时间信息)，得到cell ID 0beam ID1对应的切换项的起始时刻，以此类推，在此不再赘述。
需要说明的是，本申请实施例中，终端设备开始进行第一次切换的时刻可以与终端设备离开第一波束的覆盖范围的时长相关，示例性的，终端设备离开第一波束的覆盖范围的时长可以根据终端设备接收到切换信息时在第一波束的覆盖范围中所处的位置，以及终端设备相对于第一网络设备的速度和方向计算得到。从而，终端设备可以在接收到切换信息的时刻增加终端设备离开第一波束的覆盖范围的时长，得到终端设备开始进行第一次切换的时刻。或者，第一网络设备在获取到终端设备的用户信息时，还计算得到终端设备离开第一波束的覆盖范围所需的时长，且第一网络设备在向终端设备发送切换信息时，还将终端设备离开第一波束的覆盖范围所需的时长发送给终端设备，则终端设备可以从第一网络设备接收的终端设备离开第一波束的覆盖范围所需的时长，进而结合接收切换信息的时刻得到终端设备开始进行第一次切换的时刻。
适应的，第一网络设备可以在向终端设备发送切换信息的时刻的基础上，增加终端设备离开第一波束的覆盖范围的时长，得到第一网络设备开始进行第一次切换的时刻，并进一步采用与终端设备类似的方式确定第二个切换项对应的起始时刻、第N个切换项对应的起始时刻等，在此不再赘述。
可以理解，具体应用中，还可以根据实际的应用场景，终端设备和第一网络设备均可以采用其他任意方式得到第一切换项对应的起始时刻，例如可以将表1中的时间信息的定义改为这个切换的时刻或者定义为相对于当前时刻的切换时间差，由于原理类似，本申请实施例对此不作具体限定。
因为本申请实施例中，终端设备可以在第一切换项对应的起始时刻切换入第一切换项对应的第二波束，不需要进行测量、上报用户信息、接收网络设备分配的切换波束等流程，因此能较大程度的节约波束切换中的信令开销。可以理解，本申请实施例中的波束切换对时间信息的要求较高，因此，需要计算准确度较高的各切换项的时间信息。
或者，示例性的，终端设备根据切换信息进行波束切换可以为，针对第一切换项，终端设备在第一切换项对应的时间信息内测量终端设备在第一切换项对应的第二波束中的信号质量；在信号质量大于阈值的情况下，向第一网络设备发送切换请求；终端设备接收第一网络设备发送的切换响应消息并切换到第一切换项对应的第二波束。
本申请实施例中，终端设备在进行对应于第一切换项的波束切换之前，先测量终端设备在第一切换项对应的第二波束中的信号质量(例如RSRP或参考信号接收质量(reference signal received quality，RSRQ)，进而在信号质量大于阈值的情况下，向第一网络设备发送切换请求，并在接收第一网络设备发送的切换响应消息的情况下，切换到第一切换项对应的第二波束。即本申请实施例中，在终端设备在第一切换项对应的第二波束中的信号质量较好的情况下，才切换到第一切换项对应的第二波束，从而可以使得终端设备切换到第一切换项对应的第二波束后有较好的信号质量。
可以理解，如果信号质量小于或等于阈值，因为波束切换不能带来更好的信号质量，则终端设备可以不发起对应于该切换项的波束切换，从而可以较大程度的节约信令资源。
第二种可能的实现方式中，N个切换项中的第二波束可以属于多个网络设备(例如第二网络设备、第三网络设备)服务的范围。
例如，针对N个切换项中的第二切换项，为第二切换项对应的第二波束所服务的网络设备为第二网络设备，该第二网络设备是不同于第一网络设备的网络设备。则第一网络设备可以向第二网络设备发送包括终端设备的信息的消息，消息用于第二网络设备在第二切换项对应的时间内为终端设备预留资源。
示例性的，如图6所示，示出了一种终端设备可能在第二网络设备61中进行波束切换的示意图。终端设备当前处于第一网络设备60的波束范围，随着第一网络设备60和第二网络设备61的运行，终端设备在未来时间内可能处于第二网络设备61的波束范围，在第一网络设备60为终端设备配置切换信息时，切换信息中可能包括第二切换项，第二切换项对应的第二波束由第二网络设备61生成。则第一网络设备60可以向第二网络设备61发送包括终端设备的信息的消息，终端设备的信息例如可以是下述的一种或多种：终端设备当前的质量信息QS、终端设备的用户信息、切换信息等。则第二网络设备可以在第二切换项对应的时间内为终端设备预留资源，与终端设备共同实现对应于第二切换项的波束切换。
示例性的，终端设备根据切换信息进行波束切换可以为，终端设备在第二切换项对应的起始时刻切换入第二切换项对应的第二波束。适应的，第二网络设备在第二切换项对应的起始时刻将终端设备切换入第二切换项对应的第二波束，从而实现终端设备在第二切换项对应的第二波束中的切换。第二切换项对应的起始时刻的得到方式与上述的第一切换项对应的起始时刻的得到方式，在此不再赘述。
示例性的，另一种可能的实现方式中，终端设备根据切换信息进行波束切换可以为，针对第二切换项，终端设备在第二切换项对应的时间内测量终端设备在第二切换项对应的第二波束中的信号质量；在信号质量大于阈值的情况下，向第二网络设备发送切换请求；终端设备接收第二网络设备发送的切换响应消息并切换到第二切换项对 应的第二波束。
本申请实施例中，终端设备在进行对应于第二切换项的波束切换之前，先测量终端设备在第二切换项对应的第二波束中的信号质量(例如RSRP或参考信号接收质量(reference signal received quality，RSRQ)，进而在信号质量大于阈值的情况下，向第二网络设备发送切换请求，并在接收第二网络设备发送的切换响应消息的情况下，切换到第二切换项对应的第二波束。即本申请实施例中，在终端设备在第二切换项对应的第二波束中的信号质量较好的情况下，才切换到第二切换项对应的第二波束，从而可以使得终端设备切换到第二切换项对应的第二波束后有较好的信号质量。
可以理解，如果信号质量小于或等于阈值，因为波束切换不能带来更好的信号质量，则终端设备可以不发起对应于该切换项的波束切换，从而可以较大程度的节约信令资源。
可以理解，如果第二切换项之后还有第三切换项，第三切换项对应的第二波束为不同于第二网络设备的第三网络设备生成的，则在终端设备切换到第二网络设备的波束的情况下，第二网络设备可以向第三网络设备发送终端设备的信息，进一步实现终端设备对应于第三切换项的波束切换，依次类推，使得终端设备可以实现在多个网络设备的波束中的切换。
需要说明的是，在可选的实现方式中，第二切换项、第三切换项均可以是与第一切换项相同的切换项，本申请实施例中的第一切换项、第二切换项、第三切换项只是为了区分不同的实施例，并不对切换项本身构成限定。
另外，具体应用中，若终端设备在N次波束切换中的任意一次未能成功切换，可以进入重新配置切换信息的过程，或者，在终端设备完成N次波束切换后，可以进入重新配置切换信息的过程。以及，第一网络设备可以在终端设备实现波束切换的情况下，更新第一网络设备中的用户列表，例如，在终端设备切换入第二波束时，将终端设备从第一波束对应的用户列表中删除等，以实现完整的波束切换过程。本申请实施例对此不作具体限定。
可选的，在步骤S402中，切换信息为根据终端设备的用户信息和/或第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度。
本申请实施例中，终端设备的地理位置信息可以用于反馈终端设备当前在第一波束的覆盖范围内的位置。
终端设备的运动状态信息可以用于反馈终端设备处于低速或者高速的运动状态，其中，低速或者高速的具体速度值可以根据实际的应用场景设定，本申请实施例对此不作具体限定。可以理解，终端设备运动速度越快，终端设备的运动轨迹越有可能会随着时间偏离预测的运动轨迹，因此可以设置较小的N值。终端设备运动速度越慢，终端设备的运动轨迹越有可能在较长时间段内符合预测的运动轨迹，因此可以设置较大的N值。
或者，终端设备的运动状态信息可以用于反馈终端设备相对于第一网络设备的运 动方向，可以理解，终端设备相对于第一网络设备的运动方向可能会影响终端设备相对于第一网络设备的运动轨迹，因此，可以根据终端设备相对于第一网络设备的运动方向得到较为准确的切换信息。可以理解，通常在终端设备本身的速度较高时，终端设备相对于第一网络设备的运动方向会对终端设备相对于第一网络设备的运动轨迹造成较大的影响，因此，可选的，可以在终端设备速度较大时，结合终端设备相对于第一网络设备的运动方向得到较为准确的切换信息。
或者，终端设备的运动状态信息可以用于反馈终端设备离开第一波束的覆盖区域的速度，终端设备离开第一波束的覆盖区域的速度可以反映终端设备相对于第一网络设备的运动情况，示例性的，终端设备离开第一波束的覆盖区域的速度越快，可以设置较小的N值，终端设备离开第一波束的覆盖区域的速度越慢，可以设置较大的N值。
需要说明的是，实际应用中，如果第一网络设备无法获取终端设备的运动状态信息，则可以采用默认的终端设备的速度，例如默认终端设备相对于地面的速度为0等，本申请实施例对此不作具体限定。
本申请实施例中，在终端设备的用户信息中，包括了终端设备的运动状态信息，通过终端设备的运动状态信息可以判断终端设备可能在哪些波束中切换，使得本申请后续依据终端设备的用户信息确定切换信息时，能够得到较为准确的切换信息。
可选的，第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
本申请实施例中，第一网络设备的运行方向信息可以用于反馈第一网络设备相对于终端设备的运行趋势，从而可以进一步得到终端设备相对于第一网络设备的运行轨迹。
本申请实施例中，第一波束的覆盖区域的相邻波束的覆盖区域的信息可以是与第一波束相邻的第二波束，以及第二波束的覆盖范围。第二波束可以是第一网络设备生成的，也可以是不同于第一网络设备的其他网络设备生成的，从而在得到终端设备相对于第一网络设备的运行轨迹后，可以得到该运行轨迹所跨越的一个或多个第二波束，和终端设备离开每个第二波束所需的时长，进而得到准确的终端设备的切换信息。
可选的，在步骤S402中，切换信息可以携带在无线资源控制(radio resource control，RRC)消息中发送的，例如RRC消息携带的切换命令(mobility controlInfo)信元(information element，IE)中包括该切换信息。
示例性的，以切换信息是卫星通过UE-Special-Beam-Switch信令下发的，对应的代码可以为：
Figure PCTCN2020120436-appb-000002
Figure PCTCN2020120436-appb-000003
其中，每个Beam-Switch-Info可以表示一个切换项，Beam-Switch-Info中包括的Cell-Id和bwp-Id可以用于第二波束的标识，time-interval为时间信息，TA-Rate可以是第二波束上行定时变换率，Common-TA可以是根据实际情况设置的通用值，Doppler-Rate可以是第二波束的多普勒变换率，DlDopplerPreCompenValue可以为下行多普勒补偿值，UlDopplerPreCompenValue可以为上行多普勒补偿值，Polarization-Direction可以表示第二波束的方向。可以理解，TA-Rate、Common-TA、Doppler-Rate、DlDopplerPreCompenValue、UlDopplerPreCompenValue以及Polarization-Direction都可以根据实际的应用情况可选的设置一个或多个，本申请实施例对此不作具体限定。
作为本申请实施例的一种可选实现方式，第一网络设备还可以将相对于第一网络设备的运行轨迹相同或相近的多个终端设备划分为终端设备组，在该终端设备组中，为每个终端设备配置的切换信息相同。
示例性的，如图7所示，第一网络设备可以获取第一波束覆盖范围内的多个终端设备的用户信息，计算各终端设备在未来时间内相对于第一网络设备的运动轨迹，将运动轨迹相近的终端设备划分为第一分组70，进一步的，第一网络设备可以根据第一分组中任一个终端设备在未来时间内相对于第一网络设备的运动轨迹，采用上述的计算切换信息的方式，得到第一分组的切换信息，并将切换信息发送给第一分组内的各终端设备，之后各终端设备可以基于切换信息各自执行上述实施例中的切换过程，在此不再赘述。
本申请实施例中，可以将在未来时间内相对于第一网络设备的运动轨迹相近的移动终端进行分组，对于一个分组，只需要计算一次该分组对应的切换信息，即可得到该分组内全部终端设备的切换信息，相对于为每个终端设备计算切换信息的方式，本申请实施例的方式能够节约第一网络设备的计算资源。
可以理解，实际应用中，如果多个终端设备中存在高速移动的终端设备，例如多 个终端设备中存在如设置在高铁、飞机等上的终端设备，则该高速移动的终端在未来时间内相对于第一网络设备的运动轨迹通常与低速移动或静止的终端设备不同，因此，在分组时，分组中可能不包括该高速移动的终端设备。进而，可以将分组外的终端设备采用分别计算切换信息的方式计算切换信息。
当然，如果多个终端设备同时处于高速移动的状态，例如，高铁或飞机中的多个乘客使用的移动终端，因为都与高铁或飞机的移动速度相同或相近，则也可以将其划分为一个分组，配置相同的切换信息，本申请实施例对此不作具体限定。
示例性的，以第一分组的切换信息是卫星通过UE-Group-Beam-Switch信令下发的，对应的代码可以为：
Figure PCTCN2020120436-appb-000004
其中，每个Beam-Switch-Info可以表示一个切换项，Beam-Switch-Info中包括的Cell-Id和bwp-Id可以用于第二波束的标识，time-interval为时间信息，TA-Rate可以是第二波束上行定时变换率，Common-TA可以是根据实际情况设置的通用值，Doppler-Rate可以是第二波束的多普勒变换率，DlDopplerPreCompenValue可以为下行多普勒补偿值，UlDopplerPreCompenValue可以为上行多普勒补偿值，Polarization-Direction可以表示第二波束的方向。可以理解，TA-Rate、Common-TA、Doppler-Rate、DlDopplerPreCompenValue、UlDopplerPreCompenValue以及Polarization-Direction都可以根据实际的应用情况可选的设置一个或多个，本申请实施例对此不作具体限定。
具体应用中，若第一分组中任一个终端设备在N次波束切换中的任意一次未能成功切换，该未成功切换的终端设备可以进入重新配置切换信息的过程，或者，在第一分组中的全部终端设备完成N次波束切换后，可以进入重新为多个终端设备分组和配置切换信息的过程。以及，第一网络设备可以在第一分组的各终端设备实现波束切换的情况下，更新第一网络设备中的用户列表，例如，在任一个终端设备切换入第二波束时，将终端设备从第一波束对应的用户列表中删除等，以实现完整的波束切换过程。本申请实施例对此不作具体限定。
需要说明的是，上述实施例中是以第一网络设备为卫星进行的示例说明。具体应用中，第一网络设备也可以是与卫星通信的核心网设备。可以理解，在第一网络设备为核心网设备的情况下，卫星可以仅作为接收和发送的设备，第一网络设备的运行信息可以为与该核心网设备通信的卫星的运行信息，确定本申请实施例的波束切换的各步骤均通过核心网设备执行，从而可以通过核心网设备降低卫星的运算负荷，具体的确定波束切换的方法与第一网络设备为卫星的方式类似，在此不再赘述。
综上所述，本申请实施例中第一网络设备可以根据终端设备的用户信息等得到切换信息，使得第一网络设备向终端设备发送切换信息后，终端设备可以根据切换信息进行N次波束切换，在该N次波束切换中，第一网络设备只需获取一次用户信息，就能够一次性提前配置后续N次切换的切换项，相较于现有技术的每次配置切换信息都需要执行获取用户信息等操作，本申请实施例的方法可以减少网络的信令流程和开销，进而可以减少切换的响应时间。
示例性的，以N为大于或等于2的值，N个切换项中包括：第二切换项和第N切换项等，第二切换项对应的第二波束为第二网络设备生成的，第N切换项为第N网络设生成的，终端设备将根据切换信息执行连续的N次波束切换为例，如图8所示，为本申请实施例提供的一种网络的切换方法的信令交互流程示意图，本实施例提供的方法的信令交互可以包括：
步骤S801：第一网络设备获取终端设备的用户信息，其中终端设备当前处于第一波束的覆盖区域内。
步骤S802：第一网络设备向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数。
步骤S801和步骤S802可以参照图4对应的实施例的记载，在此不再赘述。与图4的实施例不同的是，本实施例是以N个切换项中包括：第二切换项和第N切换项等进行示例说明的。
步骤S803：第一网络设备向第二网络设备发送终端设备的信息。
步骤S804：第二网络设备向第一网络设备发送应答消息。
通过步骤S803和步骤S804，使得第二网络设备可以在第二切换项对应的时间内为终端设备预留资源。
步骤S805：第二网络设备与终端设备进行第二切换项对应的波束切换。
步骤S805可以参照图4对应的实施例中关于第二网络设备与终端设备进行波束切换的记载，在此不再赘述。
可以理解，在终端设备成功切换到第二网络设备后，终端设备可以删除第1个切换项，以减少资源占用。
步骤S806：第二网络设备向第一网络设备发送切换完成消息。
具体应用中，第二网络设备可以向第一网络设备发送切换完成消息，表示终端设备从第一网络设备到第二网络设备切换成功。适应的，第一网络设备可以更新用户列表，本申请实施例对此不作具体限定。
步骤S807：第N-1网络设备向第N网络设备发送终端设备的信息。
步骤S808：第N网络设备向第N-1网络设备发送应答消息。
具体应用中，在终端设备成功切换到第二网络设备后，第二网络设备可以接手第一网络设备的功能，向第三网络设备发送终端设备的信息，并接收第三网络设备的应答消息。
依此类推，在终端设备成功切换到第N-1网络设备后，第N-1网络设备可以接手第N-2网络设备的功能，向第N网络设备发送终端设备的信息，并接收第N网络设备的应答消息。
步骤S809：第N网络设备与终端设备进行第二切换项对应的波束切换。
第N网络设备与终端设备进行第N切换项对应的波束切换与第二网络设备与终端设备进行波束切换的过程类似，步骤S809可以参照图4对应的实施例中关于第二网络设备与终端设备进行波束切换的记载，在此不再赘述。
步骤S810：第N网络设备向第二网络设备发送切换完成消息。
需要说明的是，步骤S801至步骤S810中可以存着可选的步骤，示例性的，如图8所示的虚线部分对应的步骤均可以是可选步骤，实际应用中可以根据情况适当选择，本申请实施例对此不作具体限定。
综上所述，本申请实施例中第一网络设备可以根据终端设备的用户信息等得到切换信息，使得第一网络设备向终端设备发送切换信息后，终端设备可以根据切换信息进行N次波束切换，在该N次波束切换中，第一网络设备只需获取一次用户信息，就能够一次性提前配置后续N次切换的切换项，相较于现有技术的每次配置切换信息都需要执行获取用户信息等操作，本申请实施例的方法可以减少网络的信令流程和开销，进而可以减少切换的响应时间。
如图9所示，为本申请实施例提供的一种网络的切换方法的流程示意图，本实施例提供的方法包括以下步骤：
步骤S901：终端设备接收第一网络设备发送的切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数。
步骤S902：终端设备根据切换信息进行波束切换。
可选的，N为1。
可选的，N为大于或等于2的整数，终端设备根据切换信息进行N次波束切换，包括：终端设备根据切换信息进行连续的N次波束切换。
可选的，终端设备根据切换信息进行波束切换包括：针对N个切换项中的第一切换项，终端设备在第一切换项对应的起始时刻切换入第一切换项对应的第二波束。
可选的，切换信息为根据终端设备的用户信息和第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度。
可选的，第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；终端设备根据切换信息进行连续的N次波束切换，包括：针对第二切换项，终端设备在第二切换项对应的时间内测量终端设备在第二切换项对应的第二波束中的信号质量；在信号质量大于阈值的情况下，向第二网络设备发送切换请求；终端设备接收第二网络设备发送的切换响应消息并切换到第二切换项对应的第二波束。
可选的，还包括：终端设备向第一网络设备发送终端设备的用户信息。
本实施例的终端设备，可用于执行图4或图8对应的实施例中的终端设备侧的方法，具体实现方式和技术效果类似，这里不再赘述。
如图10所示，为本申请实施例提供的另一种网络的切换方法的流程示意图，本实施例提供的方法包括以下步骤：
步骤S1001：第一网络设备获取第一波束的覆盖区域内的终端设备的用户信息。
步骤S1002：第一网络设备向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，切换信息用于指示终端设备进行波束切换，N为正整数。
可选的，N为1。
可选的，N为大于或等于2的整数，终端设备根据切换信息进行N次波束切换，包括：终端设备根据切换信息进行连续的N次波束切换。
可选的，针对N个切换项中的第一切换项，第一网络设备在第一切换项对应的起始时刻将终端设备切换入第一切换项对应的第二波束。
可选的，切换信息为根据终端设备的用户信息和第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度。
可选的，第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；方法还包括：第一网络设备向第二网络设备发送包括终端设备的信息的消息，消息用于第二网络设备在第二切换项对应的时间内为终端设备预留资源。
可选的，终端设备属于第一分组，第一分组中包括多个终端设备，第一分组中的各终端设备接收到的第一网络设备发送的切换信息相同。
可选的，还包括：第一网络设备接收终端设备发送的终端设备的用户信息。
本实施例的第一网络设备，可用于执行图4或图8对应的实施例中的第一网络设备侧的方法，具体实现方式和技术效果类似，这里不再赘述。
参照图11，示出了本申请实施例的一种终端设备的结构示意图，本申请实施例的终端设备包括接收模块1101和处理模块1102，其中，接收模块，用于接收第一网络设备发送的切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；处理模块，用于根据切换信息进行波束切换。
可选的，N为1。
可选的，N为大于或等于2的整数，处理模块，具体用于根据切换信息进行连续的N次波束切换。
可选的，处理模块，具体还用于针对N个切换项中的第一切换项，在第一切换项对应的起始时刻切换入第一切换项对应的第二波束。
可选的，切换信息为根据终端设备的用户信息和/或第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度；第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；处理模块，具体还用于针对第二切换项，在第二切换项对应的时间内测量终端设备在第二切换项对应的第二波束中的信号质量；在信号质量大于阈值的情况下，向第二网络设备发送切换请求；接收第二网络设备发送的切换响应消息并切换到第二切换项对应的第二波束。
参照图12，示出了本申请实施例的一种第一网络设备的结构示意图，本申请实施例的终第一网络设备包括处理模块1201和发送模块1202，其中，处理模块，用于获取第一波束的覆盖区域内的终端设备的用户信息；发送模块，用于向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，切换信息用于指示终端设备进行波束切换，N为正整数。
可选的，N为1。
可选的，N为大于或等于2的整数，切换信息用于指示终端设备进行连续的N次波束切换。
可选的，处理模块，还用于针对N个切换项中的第一切换项，在第一切换项对应的起始时刻将终端设备切换入第一切换项对应的第二波束。
可选的，终端设备属于第一分组，第一分组中包括多个终端设备，第一分组中的 各终端设备接收到的第一网络设备发送的切换信息相同。
可选的，切换信息为根据用户信息和/或第一网络设备的运行信息得到的，终端设备的用户信息包括下述至少一项：终端设备的地理位置信息、终端设备的运动状态信息；其中，终端设备的运动状态信息用于表示终端设备相对于地面的速度，和/或，终端设备相对于第一网络设备的运动方向，和/或，终端设备离开第一波束的覆盖区域的速度；第一网络设备的运行信息包括下述至少一项：第一网络设备的运行方向信息，第一波束的覆盖区域的相邻波束的覆盖区域的信息。
可选的，终端设备离开第一波束的覆盖区域的速度越大N越小。
可选的，N个切换项中包括第二切换项，第二切换项对应的第二波束由第二网络设备生成；发送模块，还用于向第二网络设备发送包括终端设备的信息的消息，消息用于第二网络设备在第二切换项对应的时间内为终端设备预留资源。
图13为本申请实施例提供的一种通信装置的硬件结构示意图。参见图13，该通信装置包括：处理器131和通信接口132，示例性的，处理器131和通信接口132可以通过通信总线通信，通信接口132用于接收待处理的数据和输出处理后的数据，处理器用于对待处理的数据执行如图4或图8对应的实施例所示的任一方法。其中，在通信装置应用于终端设备时，待处理的数据可以为本申请实施例中的切换信息等，处理后的数据可以为对应于各切换项的切换数据等。在通信装置应用于第一网络设备时，待处理的数据可以为终端设备的用户信息等，处理后的数据可以为切换信息等。
可选的，通信接口132还可以包括发送器和/或接收器。
可选的，上述处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)等。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处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
可选的，该通信装置还包括存储器133，用于存储程序指令，程序指令由处理器执行时，使得上述图4或图8所示实施例所示的方法被执行。存储器和处理器可以是独立的单元，也可以是集成在一起的，本申请实施例对此不作具体限定。
图14为本申请实施例提供的一种通信装置的硬件结构示意图。参见图14，该通信装置包括：逻辑电路141、输入接口143和输出接口142，其中：输入接口用于获取待处理的数据；逻辑电路用于对待处理的数据执行如上述图4或图8所示实施例所示的方法，得到处理后的数据；以及输出接口用于输出处理后的数据。其中，在通信装置应用于终端设备时，待处理的数据可以为本申请实施例中的切换信息等，处理后的数据可以为对应于各切换项的切换数据等。在通信装置应用于第一网络设备时，待处理的数据可以为终端设备的用户信息等，处理后的数据可以为切换信息等。
本申请实施例还提供一种芯片，该芯片包括上述任一个通信装置，或用于支持通信装置实现本申请实施例所示的功能(例如，第一网络设备获取终端设备的用户信息，其中终端设备当前处于第一波束的覆盖区域内；第一网络设备向终端设备发送切换信息，切换信息包括N个切换项，任一个切换项包括：时间信息和第二波束的标 识，时间信息用于表示终端设备经过任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；终端设备根据切换信息进行波束切换等)，该芯片具体可以用于芯片系统，该芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。当实现上述方法的为终端设备内的芯片时，芯片包括处理单元，进一步的，芯片还可以包括通信单元，所述处理单元例如可以是处理器，当芯片包括通信单元时，所述通信单元例如可以是输入/输出接口、管脚或电路等。处理单元执行本申请实施例中各个处理模块所执行的全部或部分动作，通信单元可执行相应的接收或发送动作，例如，接收网络设备发送的配置信令等。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序，所述计算机程序用于实现上述图4或图8所示实施例所示的方法。
本申请实施例还一种通信系统，包括如图11所述的终端设备和如图12所述的第一网络装置。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，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。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。

Claims (36)

  1. 一种网络的切换方法，其特征在于，包括：
    终端设备接收第一网络设备发送的切换信息，所述切换信息包括N个切换项，任一个所述切换项包括：时间信息和第二波束的标识，所述时间信息用于表示所述终端设备经过所述任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；
    所述终端设备根据所述切换信息进行波束切换。
  2. 根据权利要求1所述的方法，其特征在于，所述N为1。
  3. 根据权利要求1所述的方法，其特征在于，所述N为大于或等于2的整数，所述终端设备根据所述切换信息进行波束切换，包括：
    所述终端设备根据所述切换信息进行连续的N次波束切换。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述终端设备根据所述切换信息进行波束切换，包括：
    针对所述N个切换项中的第一切换项，所述终端设备在所述第一切换项对应的起始时刻切换入所述第一切换项对应的第二波束。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述切换信息为根据所述终端设备的用户信息和/或所述第一网络设备的运行信息得到的；
    其中，所述终端设备的用户信息包括下述至少一项：所述终端设备的地理位置信息、所述终端设备的运动状态信息；所述终端设备的运动状态信息用于表示所述终端设备相对于地面的速度，和/或，所述终端设备相对于所述第一网络设备的运动方向，和/或，所述终端设备离开所述第一波束的覆盖区域的速度；
    所述第一网络设备的运行信息包括下述至少一项：所述第一网络设备的运行方向信息，所述第一波束的覆盖区域的相邻波束的覆盖区域的信息。
  6. 根据权利要求5所述的方法，其特征在于，所述终端设备离开所述第一波束的覆盖区域的速度越大所述N越小。
  7. 根据权利要求3所述的方法，其特征在于，所述N个切换项中包括第二切换项，所述第二切换项对应的第二波束由第二网络设备生成；所述终端设备根据所述切换信息进行连续的N次波束切换，包括：
    针对所述第二切换项，所述终端设备在所述第二切换项对应的时间内测量所述终端设备在所述第二切换项对应的第二波束中的信号质量；
    在所述信号质量大于阈值的情况下，向所述第二网络设备发送切换请求；
    所述终端设备接收所述第二网络设备发送的切换响应消息并切换到所述第二切换项对应的第二波束。
  8. 一种网络的切换方法，其特征在于，包括：
    第一网络设备获取第一波束的覆盖区域内的终端设备的用户信息；
    所述第一网络设备向所述终端设备发送切换信息，所述切换信息包括N个切换项，任一个所述切换项包括：时间信息和第二波束的标识，所述时间信息用于表示所述终端设备经过所述任一个切换项对应的第二波束的覆盖区域所需的时长，所述切换信息用于指示所述终端设备进行波束切换，N为正整数。
  9. 根据权利要求8所述的方法，其特征在于，所述N为1。
  10. 根据权利要求8所述的方法，其特征在于，所述N为大于或等于2的整数，所述切换信息用于指示所述终端设备进行连续的N次波束切换。
  11. 根据权利要求8-10任一项所述的方法，其特征在于，还包括：
    针对所述N个切换项中的第一切换项，所述第一网络设备在所述第一切换项对应的起始时刻将所述终端设备切换入所述第一切换项对应的第二波束。
  12. 根据权利要求8-11任一项所述的方法，其特征在于，所述终端设备属于第一分组，所述第一分组中包括多个终端设备，所述第一分组中的各终端设备接收到的所述第一网络设备发送的切换信息相同。
  13. 根据权利要求8-12任一项所述的方法，其特征在于，所述切换信息为根据所述用户信息和/或所述第一网络设备的运行信息得到的；
    其中，所述终端设备的用户信息包括下述至少一项：所述终端设备的地理位置信息、所述终端设备的运动状态信息；所述终端设备的运动状态信息用于表示所述终端设备相对于地面的速度，和/或，所述终端设备相对于所述第一网络设备的运动方向，和/或，所述终端设备离开所述第一波束的覆盖区域的速度；
    所述第一网络设备的运行信息包括下述至少一项：所述第一网络设备的运行方向信息，所述第一波束的覆盖区域的相邻波束的覆盖区域的信息。
  14. 根据权利要求13所述的方法，其特征在于，所述终端设备离开所述第一波束的覆盖区域的速度越大所述N越小。
  15. 根据权利要求8-14任一项所述的方法，其特征在于，所述N个切换项中包括第二切换项，所述第二切换项对应的第二波束由第二网络设备生成；所述方法还包括：
    所述第一网络设备向所述第二网络设备发送包括所述终端设备的信息的消息，所述消息用于所述第二网络设备在所述第二切换项对应的时间内为所述终端设备预留资源。
  16. 一种网络的切换方法，其特征在于，所述方法包括：
    第一网络设备获取终端设备的用户信息，其中所述终端设备当前处于第一波束的覆盖区域内；
    所述第一网络设备向所述终端设备发送切换信息，所述切换信息包括N个切换项，任一个所述切换项包括：时间信息和第二波束的标识，所述时间信息用于表示所述终端设备经过所述任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；
    所述终端设备根据所述切换信息进行波束切换。
  17. 一种终端设备，其特征在于，包括：
    接收模块，用于接收第一网络设备发送的切换信息，所述切换信息包括N个切换项，任一个所述切换项包括：时间信息和第二波束的标识，所述时间信息用于表示所述终端设备经过所述任一个切换项对应的第二波束的覆盖区域所需的时长，N为正整数；
    处理模块，用于根据所述切换信息进行波束切换。
  18. 根据权利要求17所述的终端设备，其特征在于，所述N为1。
  19. 根据权利要求17所述的终端设备，其特征在于，所述N为大于或等于2的整数，所述处理模块，具体用于根据所述切换信息进行连续的N次波束切换。
  20. 根据权利要求17-18任一项所述的终端设备，其特征在于，所述处理模块，具体还用于针对所述N个切换项中的第一切换项，在所述第一切换项对应的起始时刻切换入所述第一切换项对应的第二波束。
  21. 根据权利要求17-20任一项所述的终端设备，其特征在于，所述切换信息为根据所述终端设备的用户信息和/或所述第一网络设备的运行信息得到的；
    其中，所述终端设备的用户信息包括下述至少一项：所述终端设备的地理位置信息、所述终端设备的运动状态信息；所述终端设备的运动状态信息用于表示所述终端设备相对于地面的速度，和/或，所述终端设备相对于所述第一网络设备的运动方向，和/或，所述终端设备离开所述第一波束的覆盖区域的速度；
    所述第一网络设备的运行信息包括下述至少一项：所述第一网络设备的运行方向信息，所述第一波束的覆盖区域的相邻波束的覆盖区域的信息。
  22. 根据权利要求21所述的终端设备，其特征在于，所述终端设备离开所述第一波束的覆盖区域的速度越大所述N越小。
  23. 根据权利要求19所述的终端设备，其特征在于，所述N个切换项中包括第二切换项，所述第二切换项对应的第二波束由第二网络设备生成；所述处理模块，具体还用于针对所述第二切换项，在所述第二切换项对应的时间内测量所述终端设备在所述第二切换项对应的第二波束中的信号质量；在所述信号质量大于阈值的情况下，向所述第二网络设备发送切换请求；接收所述第二网络设备发送的切换响应消息并切换到所述第二切换项对应的第二波束。
  24. 一种第一网络设备，其特征在于，包括：
    处理模块，用于获取第一波束的覆盖区域内的终端设备的用户信息；
    发送模块，用于向所述终端设备发送切换信息，所述切换信息包括N个切换项，任一个所述切换项包括：时间信息和第二波束的标识，所述时间信息用于表示所述终端设备经过所述任一个切换项对应的第二波束的覆盖区域所需的时长，所述切换信息用于指示所述终端设备进行波束切换，N为正整数。
  25. 根据权利要求24所述的第一网络设备，其特征在于，所述N为1。
  26. 根据权利要求24所述的第一网络设备，其特征在于，所述N为大于或等于2的整数，所述切换信息用于指示所述终端设备进行连续的N次波束切换。
  27. 根据权利要求24-26任一项所述的第一网络设备，其特征在于，所述处理模块，还用于针对所述N个切换项中的第一切换项，在所述第一切换项对应的起始时刻将所述终端设备切换入所述第一切换项对应的第二波束。
  28. 根据权利要求24-27任一项所述的第一网络设备，其特征在于，所述终端设备属于第一分组，所述第一分组中包括多个终端设备，所述第一分组中的各终端设备接收到的所述第一网络设备发送的切换信息相同。
  29. 根据权利要求24-28任一项所述的第一网络设备，其特征在于，所述切换信息为根据所述用户信息和/或所述第一网络设备的运行信息得到的；
    其中，所述终端设备的用户信息包括下述至少一项：所述终端设备的地理位置信 息、所述终端设备的运动状态信息；所述终端设备的运动状态信息用于表示所述终端设备相对于地面的速度，和/或，所述终端设备相对于所述第一网络设备的运动方向，和/或，所述终端设备离开所述第一波束的覆盖区域的速度；
    所述第一网络设备的运行信息包括下述至少一项：所述第一网络设备的运行方向信息，所述第一波束的覆盖区域的相邻波束的覆盖区域的信息。
  30. 根据权利要求29所述的第一网络设备，其特征在于，所述终端设备离开所述第一波束的覆盖区域的速度越大所述N越小。
  31. 根据权利要求24-30任一项所述的第一网络设备，其特征在于，所述N个切换项中包括第二切换项，所述第二切换项对应的第二波束由第二网络设备生成；所述发送模块，还用于向所述第二网络设备发送包括所述终端设备的信息的消息，所述消息用于所述第二网络设备在所述第二切换项对应的时间内为所述终端设备预留资源。
  32. 一种通信装置，其特征在于，包括处理器和通信接口，所述通信接口用于接收待处理的数据和输出处理后的数据，所述处理器用于对所述待处理的数据执行如权利要求1-7任一项所述的方法，或者执行如权利要求8-15任一项所述的方法，得到所述处理后的数据。
  33. 根据权利要求32所述的通信装置，其特征在于，所述通信装置还包括存储器，用于存储程序指令，所述程序指令由所述处理器执行时，使得权利要求1-7中任一项所述的方法或者权利要求8-15中任一项所述的方法被执行。
  34. 一种通信装置，其特征在于，包括逻辑电路、输入接口和输出接口，其中：
    所述输入接口用于获取待处理的数据；
    所述逻辑电路用于对待处理的数据执行如权利要求1-7任一项所述的方法，或者执行如权利要求8-15任一项所述的方法，得到处理后的数据；以及
    所述输出接口用于输出处理后的数据。
  35. 一种芯片，其特征在于，包括如权利要求32-34任一项所述的通信装置。
  36. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，所述计算机程序用于实现如权利要求1-7任一项所述的方法，或者实现如权利要求8-15任一项所述的方法。
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