WO2021056561A1 - 小区切换的方法和设备 - Google Patents

小区切换的方法和设备 Download PDF

Info

Publication number
WO2021056561A1
WO2021056561A1 PCT/CN2019/109178 CN2019109178W WO2021056561A1 WO 2021056561 A1 WO2021056561 A1 WO 2021056561A1 CN 2019109178 W CN2019109178 W CN 2019109178W WO 2021056561 A1 WO2021056561 A1 WO 2021056561A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
location information
timer
network device
distance
Prior art date
Application number
PCT/CN2019/109178
Other languages
English (en)
French (fr)
Inventor
尤心
Original Assignee
Oppo广东移动通信有限公司
Oppo广东移动通信有限公司深圳分公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司, Oppo广东移动通信有限公司深圳分公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201980095130.9A priority Critical patent/CN113678475B/zh
Priority to PCT/CN2019/109178 priority patent/WO2021056561A1/zh
Publication of WO2021056561A1 publication Critical patent/WO2021056561A1/zh

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to a method for cell handover.
  • the terminal device can perform cell measurement based on the measurement event configured by the network, and send a measurement report to the network device when the conditions are met.
  • the source base station can select the target base station to be handed over based on the measurement report.
  • NTN Non-Terrestrial Network
  • This application provides a method and device for cell handover, which can realize effective cell handover in the NTN system.
  • a method for cell handover including: a terminal device sends location information of the terminal device to a network device based on at least one of the following information: a timer, a moving distance of the terminal device, and The area where the terminal device is located, where the location information is used for cell handover.
  • a terminal device in a second aspect, can execute the foregoing first aspect or any optional implementation method of the first aspect.
  • the terminal device includes a functional module for executing the foregoing first aspect or any possible implementation manner of the first aspect.
  • a communication device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
  • an apparatus for cell handover is provided, which is used to implement the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the device includes a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes the method in the above-mentioned first aspect or any possible implementation of the first aspect.
  • the device may be a chip, for example.
  • a computer-readable storage medium for storing computer programs.
  • the computer program causes the computer to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
  • a computer program product including computer program instructions.
  • the computer program instructions cause the computer to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
  • a computer program which when running on a computer, causes the computer to execute the method in the first aspect or any possible implementation of the first aspect.
  • the terminal device reports its location information to the network device based on the timer, the moving distance of the terminal device, and the area where the terminal device is located, for the network device to perform cell handover related operations.
  • the network equipment can realize effective cell handover in the NTN system based on the channel quality and the real-time location of the terminal equipment, and improve the success rate of the cell handover.
  • Fig. 1 is a schematic diagram of a possible wireless communication system applied by an embodiment of the present application.
  • Figure 2 is a flow chart of cell handover.
  • Figure 3 is a flow interaction diagram of conditional switching.
  • Fig. 4 is a schematic flowchart of a cell handover method according to an embodiment of the present application.
  • Fig. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of an apparatus for cell handover according to an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA broadband code division multiple access
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LTE-A advanced Advanced long term evolution
  • NR New Radio
  • NR NR system evolution system
  • LTE-based access to unlicensed spectrum LTE-U System
  • NR-based access to unlicensed spectrum NR-U system on unlicensed spectrum
  • Universal Mobile Telecommunication System UMTS
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • 5G system or other communication systems etc.
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V vehicle to vehicle
  • CA carrier aggregation
  • DC dual connectivity
  • SA standalone
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 includes a network device 110.
  • the network device 110 may be a device that communicates with the terminal device 120.
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be, for example, a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system; a base station (NodeB, NB) in a WCDMA system; and an evolved base station (Evolutional Node B) in an LTE system. , ENB or eNodeB); the radio controller in the Cloud Radio Access Network (Cloud Radio Access Network, CRAN).
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B evolved base station
  • ENB or eNodeB the radio controller in the Cloud Radio Access Network
  • CRAN Cloud Radio Access Network
  • the network device 110 may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network device in a 5G network, or a public land mobile network that will evolve in the future (Public Land Mobile Network). Network equipment in Mobile Network, PLMN). Alternatively, the network device 110 may also be a satellite in the NTN system.
  • PLMN Public Land Mobile Network
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the terminal device 120 may be mobile or fixed.
  • the terminal device 120 may be, for example, a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user.
  • the terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), and wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • D2D Direct terminal connection
  • the network device 110 may provide services for a cell, and the terminal device 120 communicates with the network device 110 through transmission resources corresponding to the cell.
  • the cell may be a cell corresponding to the network device 110.
  • a cell may belong to a macro base station or a base station corresponding to a small cell (Small cell).
  • the small cell here may include a metro cell (Metro cell), a micro cell (Micro cell), a pico cell (Pico cell), a femto cell (Femto cell), and so on. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • Fig. 1 exemplarily shows one network device and two terminal devices, but the present application is not limited to this.
  • the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity.
  • the embodiments of the present application can be applied to a non-terrestrial communication network (Non Terrestrial Network, NTN) system.
  • NTN Non Terrestrial Network
  • the network device 110 in FIG. 1 can communicate with the terminal device through a satellite, or the network device 110 itself is a satellite.
  • NTN generally uses satellite communication to provide communication services to ground users.
  • satellite communication has many unique advantages.
  • satellite communication is not restricted by the user area.
  • general terrestrial communication cannot cover the ocean, mountains, deserts and other areas where communication equipment cannot be installed or because of the sparse population. Satellites can cover a larger ground, and satellites can orbit the earth, so in theory every corner of the earth can be covered by satellite communications.
  • satellite communication has greater social value. Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting The development of these areas.
  • the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases.
  • the stability of satellite communication is high, and it is not restricted by natural disasters.
  • LEO Low-Earth Orbit
  • MEO Medium-Earth Orbit
  • GEO Geostationary Earth Orbit
  • HEO Highly elliptical Orbit
  • the main research is LEO satellite and GEO satellite.
  • the altitude range of the LEO satellite is 500km-1500km, and the corresponding orbital period is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is generally less than 20ms.
  • the maximum satellite viewing time is 20 minutes, the signal propagation distance is short, the link loss is small, and the transmission power requirements of the user terminal are not high.
  • the orbital height of the GEO satellite is 35786km, and the rotation period around the earth is 24 hours.
  • the signal propagation delay of single-hop communication between users is generally 250ms.
  • satellites In order to ensure the coverage of satellites and increase the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground.
  • a satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. Ground area.
  • handover of a cell can be understood as handover of a network device, for example, a terminal device is handed over from a source base station (Source gNB) to a target base station (TargegNB).
  • the handover process mainly includes three processes of handover preparation, handover execution, and handover completion, which specifically includes some or all of the following steps:
  • the terminal device performs measurement control and measurement report (Measurement Control and Report).
  • the source base station makes a handover decision (Handover Decision).
  • the source base station sends a handover request (Handover Request) message to the target base station.
  • Handover Request handover request
  • the handover request message includes related information about handover preparation.
  • the target base station performs admission control (Admission Request) to improve the success rate of handover.
  • the target base station sends a Handover Request Acknowledge (Handover Request Acknowledge) message to the source base station.
  • Handover Request Acknowledge Handover Request Acknowledge
  • the handover request confirmation message includes the handover command generated by the target base station, and the source base station does not allow any modification to the handover command generated by the target base station, but directly forwards the handover command to the terminal device.
  • the Handover Initiation (Handover Initiation) of the wireless access network (Wireless Access Network, RAN) is started.
  • the terminal device immediately executes the handover process after receiving the handover command, that is, disconnects the source base station and connects to the target base station, for example, initiates random access, sends an RRC handover complete message to the target base station, and so on.
  • the source base station sends a sequence number (SN) status to the target base station.
  • SN sequence number
  • the target base station sends a Path Switch Request (Path Switch Request) message to the AMF to inform its terminal equipment that it has changed cells.
  • Path Switch Request Path Switch Request
  • a path switch (Path Switch in UPF(s)) is performed in a user plane function (User Plane Function, UPF).
  • UPF User Plane Function
  • the Access and Mobility Management Function sends a Path Switch Request Acknowledge (Path Switch Request Acknowledge) message to the target base station.
  • AMF Access and Mobility Management Function
  • the target base station completes the path switching process with the AMF and UPF.
  • the purpose of the process is to switch the data path of the user plane from the source base station to the target base station.
  • the data packets of the forward path and the new path may alternately arrive at the target base station.
  • the target base station can first transfer all forwarded data packets to the terminal device, and then transfer the packets received from the new path. This can ensure the correct transmission sequence.
  • the AMF can immediately send one or more "end markers" on the old path, which does not include user data. After sending the packet containing the end flag, the AMF should not send any data packets on the old path. After receiving the packet containing the end flag, if forwarding is active for this bearer, the source base station should send this packet to the target base station. After detecting the packet containing the end flag, the target base station should discard it and initiate any necessary procedures to maintain the user's orderly delivery.
  • the target base station sends a UE context release message to the source base station.
  • the target base station After receiving the path switch confirmation message, the target base station notifies the source base station of the success of the handover, and triggers the resource release of the source base station. After receiving the UE context release message, the source base station can release the radio bearer and control plane resources related to the UE context.
  • conditional handover can be used.
  • Conditional switching avoids the problem that the switching preparation time is too long and the terminal device needs to switch too late.
  • the running track of the terminal device is specific, so the source base station can configure the target base station to the terminal device in advance, and the HO command carries the conditions for triggering the terminal device to switch.
  • the terminal device initiates an access request to the target base station.
  • the terminal device sends a measurement report to the source base station.
  • a handover preparation is performed between the source base station and the target base station.
  • the source base station sends a handover command to the terminal device.
  • the network device can configure measurement objects, measurement conditions, or handover conditions, etc., to the terminal device for the terminal device to determine whether a cell handover is required.
  • the measurement refers to the mobility measurement in the connected state.
  • the measurement object is the basic unit of frequency point. Each configured measurement object is a separate frequency point and has a separate measurement object identifier. For Evolved Universal Terrestrial Radio Access (E-UTRA), the same frequency As with inter-frequency measurement, the measurement object is a single E-UTRA carrier frequency. For the cell related to the carrier frequency, E-UTRA may configure a cell offset list and a blacklist cell list. No operation is performed on the blacklisted cells in the measurement evaluation and measurement report.
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • Reporting configurations are divided into event-triggered reporting and periodic-triggering reporting according to their types, and each reporting configuration has a separate identification.
  • the event-triggered reporting configuration includes event types and thresholds, as well as the duration (Time to Trigger, TTT) that satisfies the trigger condition. TTT can also be referred to as the trigger time.
  • the reporting configuration of the periodic trigger type includes the reporting period and the purpose of the periodic trigger.
  • the measurement events currently supported in the NR system include the following:
  • Event A1 The serving cell is higher than an absolute threshold (serving>threshold);
  • Event A2 The serving cell is below an absolute threshold (serving ⁇ threshold);
  • Event A3 The neighboring cell is higher than the primary cell/primary and secondary cell by an offset
  • Event A4 The neighboring cell is higher than an absolute threshold (Neighbour>threshold);
  • Event A5 The primary cell/primary and secondary cell is below an absolute threshold 1, and the neighboring cell/secondary cell is above another absolute threshold 2;
  • Event A6 The neighboring cell is higher than the secondary cell by an offset
  • Event B1 The neighboring cell is higher than an absolute threshold
  • Event B2 The primary cell is higher than an absolute threshold 1, and the neighboring cell is higher than another absolute threshold 2.
  • a separate measurement identifier associates the measurement object with a specific reporting configuration. If the terminal device reaches the measurement start threshold, the terminal device will determine whether to perform the measurement based on the presence or absence of the measurement identifier.
  • the measurement report is evaluated when a certain trigger condition is met. If the report condition is met, the terminal device will fill in the measurement report and send it to the network device.
  • Measurement reports are mainly divided into three categories:
  • the terminal device triggers the sending of the measurement report only after the measurement event entry threshold configured by the network is met and continues for a period of time, and the process ends after the measurement report is sent once.
  • the reporting configuration corresponding to this criterion is:
  • the trigger type is "event", including A1-A6, B1-B2, one of the measurement events and their threshold parameters;
  • the number of reports is 1;
  • the UE ignores it.
  • the terminal equipment After the network configuration measurement, the terminal equipment measures the corresponding frequency points according to the configuration content, and sends the measurement report according to the specified reporting period and interval.
  • the trigger period is "period", including "reportCGI” and “reportStrongestCell”.
  • the report purpose is "reportCGI”
  • the number of reports is equal to 1
  • the report purpose is "reportStrongestCell”
  • the number of reports can be greater than 1.
  • the terminal device Once the terminal device is configured with the "reportCGI" purpose of reporting, it will start the T321 timer. In order for the network to obtain the information needed to construct the neighbor cell list as soon as possible. If the content required for reporting has been obtained before the timer expires, the terminal device can stop T321 and initiate reporting in advance.
  • the event triggers periodic reporting
  • the terminal device will trigger the sending of the measurement report only after the measurement event entry threshold configured by the network is met and lasts for a period of time. After the measurement report is triggered, the timer between multiple measurements and the counter of the number of measurements will be started, and the process will end when the number of reports reaches the requirement.
  • the reporting configuration corresponding to this criterion is:
  • the trigger type is "event", including a measurement event from A1 to A5 and its threshold parameters;
  • the number of reports is greater than 1;
  • the reporting interval is valid, and the network sets the reporting cycle timer according to the configured interval parameter.
  • the satellite In the NTN system, the satellite is far from the ground, and the signal transmission delay between the terminal equipment and the satellite increases significantly.
  • the measurement report may become invalid.
  • the measurement report reported by the terminal device for the satellite will also become invalid. In this way, effective cell handover cannot be guaranteed.
  • this application provides a cell handover solution, which can obtain more accurate measurement reports and effectively implement cell handover in the NTN system.
  • Fig. 4 is a schematic flowchart of a cell handover method according to an embodiment of the present application.
  • the method shown in FIG. 4 can be executed by a terminal device.
  • the terminal device is, for example, the terminal device 120 in FIG. 1.
  • the method 400 includes some or all of the following steps.
  • the terminal device sends the location information of the terminal device to the network device based on at least one of the following information: a timer, a counter, a moving distance of the terminal device, and an area where the terminal device is located.
  • the location information is used for cell handover.
  • the terminal device needs to report its location information to the network device for the network device to perform cell handover related operations.
  • the network equipment can realize effective cell handover in the NTN system based on the channel quality and the real-time location of the terminal equipment.
  • the network device can be a satellite; or a ground station, such as a base station.
  • the distance between the terminal device and the network device is the distance between the terminal device and the satellite; when the network device is a ground station, the distance between the terminal device and the network device is the distance between the terminal device and the network device.
  • a satellite can implement the function of a base station, so the network device is a satellite, or in other words, the satellite is used as a network device to communicate with terminal devices.
  • the distance between the terminal equipment and the network equipment is the distance between the terminal equipment and the satellite.
  • the uplink data from the terminal device is sent to the ground station via satellite, and the downlink data from the ground station is sent to the terminal device via satellite, so the network device is the ground station.
  • the distance between the terminal equipment and the network equipment includes the distance between the terminal equipment and the satellite, and the sum of the distance between the satellite and the ground station. After the satellite receives the measurement report reported by the terminal equipment, it will be forwarded to the ground station.
  • the satellite In the case of LEO, the satellite is moving, and the distance between the satellite and the ground station is also changing; in the case of GEO, the satellite is not moving, and the distance between the satellite and the ground station is fixed.
  • the terminal device performs cell measurement, obtains a measurement report, and sends the measurement report to the network device.
  • the network device can perform mobility management of the terminal device, such as cell handover, based on the measurement report and the location information of the terminal device. For example, the network device can determine the current distance between the terminal device and the network device according to the location information of the terminal device, and adjust the measurement value in the measurement report according to the change of the distance between them, so that the measurement report is suitable for The current location of the terminal equipment and network equipment, so that the network equipment can perform cell handover related operations based on the adjusted measurement report, such as performing the related operations performed by the source base station in Figures 2 and 3, so as to select the appropriate terminal equipment Target cell to achieve cell handover in the NTN system.
  • Terminal equipment can report location information based on timers, counters, terminal equipment movement, etc.
  • the movement of the terminal device can be characterized by information such as the movement distance of the terminal device and the area where the terminal device is located. The process of sending location information by the terminal device will be described in detail below.
  • the terminal device sends the location information of the terminal device to the network device based on the timer.
  • the terminal device starts the timer when the preset condition is met; and when the timer expires, sends its location information to the network device.
  • the terminal device when the terminal device satisfies the preset condition, it sends its location information to the network device and starts the timer. Wherein, before the timer expires, the terminal device no longer sends the location information to the network device.
  • the preset condition may include at least one of the following:
  • the terminal device receives the instruction information sent by the network device for instructing the terminal device to send location information
  • the terminal device enters the connected state
  • a measurement event of network device configuration occurs
  • the channel quality of the serving cell of the terminal device is lower than the first threshold
  • the channel quality of the neighboring cell of the terminal device is higher than the second threshold
  • the terminal device sends the location information every time.
  • a timer is used to control the behavior of the terminal device reporting location information, which can avoid frequent reporting.
  • the duration of the timer may be configured by the network device, pre-configured, or determined by the terminal device itself.
  • the terminal device may select the timer corresponding to the moving speed among multiple timers with different timing durations according to its moving speed.
  • the network device configures three timers for the terminal device, namely timer 1, timer 2, and timer 3. If the terminal device is moving at a low speed, select timer 1; if the terminal device is moving at a medium speed, select timer 2; if the terminal device is moving at a high speed, select timer 3. Among them, for example, the timing duration of timer 1>the timing duration of timer 2>the timing duration of timer 3 can be set.
  • the terminal device can determine whether it is in a low-speed movement state, a medium-speed movement state, or a high-speed movement state according to the distance moved within the time T. For example, if the distance moved in time T is greater than D1, it is considered to be in a high-speed moving state; if the distance moved in time T is less than D2, it is considered to be in a low-speed moving state; if the distance moved in time T is between D1 and D1 and Between D2, it is considered to be moving at a medium speed.
  • the terminal device After selecting the timer, the terminal device reports location information based on the timer.
  • the terminal device can start the timer based on the aforementioned preset condition; the network device can also instruct the terminal device to start the timer through the indication information.
  • the terminal device starts the timer when the preset condition is met, and when the timer expires, sends its location information to the network device. At this time, the terminal device can restart the timer when sending the location information to the network device to implement periodic location reporting; or, for aperiodic location reporting, the terminal device can send the location information to the network device When, stop the timer.
  • the terminal device can also start or restart the timer under other conditions. For example, when the terminal device enters the connected state, the timer is started; when the measurement event configured by the network device occurs, such as the aforementioned time A1-A6 and B1-B2, the timer is started; when the measurement report is triggered, the timer is started; service When the channel quality of the cell is poor to a certain degree, the timer is started; when the channel quality of the neighboring cell is better than a certain degree, the timer is started; or, the timer is started when the terminal device sends location information last time.
  • the terminal device may stop the timer when receiving the instruction information sent by the network device for instructing the terminal device to stop the timer.
  • the terminal device sends the location information to the network device based on its moving distance.
  • the terminal device determines whether the distance between the current location and the location at which the location information was sent last time is greater than the third distance; if it is greater than the third distance, the terminal device sends the location information to the network device.
  • the terminal device if it finds its current location and the distance between the location when the location information was sent last time exceeds the third distance, the terminal device sends its location to the network device information. If the distance between the current position and the position when the position information was sent last time does not exceed the third distance, there is no need to send the position information.
  • the third distance may be configured by the network device, pre-configured, or determined by the terminal device itself.
  • the terminal device may select the third distance corresponding to the moving speed among a plurality of preset distances according to its moving speed.
  • the network device configures three distance values for the terminal device, namely D1, D2, and D3. If the terminal device is moving at a low speed, the third distance is selected as D1; if the terminal device is moving at a medium speed, the third distance is selected as D2; if the terminal device is moving at a high speed, the third distance is selected as D3. Among them, for example, D1 ⁇ D2 ⁇ D3 can be set.
  • the terminal device can determine whether it is in a low-speed movement state, a medium-speed movement state, or a high-speed movement state according to the distance moved within the time T. For example, if the distance moved in time T is greater than D1, it is considered to be in a high-speed moving state; if the distance moved in time T is less than D2, it is considered to be in a low-speed moving state; if the distance moved in time T is between D1 and D1 and Between D2, it is considered to be moving at a medium speed.
  • the terminal device sends its location information to the network device based on the moving distance. Due to the large moving distance of the terminal equipment, for example, the moving distance exceeds the third distance, and the cell handover is greatly affected, the terminal equipment needs to send its location information to the network equipment so that the network equipment can adjust the measurement results and use it for the cell handover ; When the moving distance of the terminal equipment is small and the impact on the cell handover is not large, its location information may not be sent, thereby avoiding frequent signaling interaction.
  • the terminal device sends the location information to the network device based on the area where it is located.
  • the location information is sent to the network device.
  • the embodiment of the present application does not limit the division of regions.
  • the first area and the second area are different areas in the same cell; or, the first area and the second area are areas where different cells are located; or, the first area and the second area are areas covered by different beams of satellites .
  • each cell can be regarded as an area; a cell can also be divided into multiple areas; the coverage of each beam of the satellite can also be regarded as an area.
  • the area size and number can be obtained from the area information.
  • the area information may be sent by the network device to the terminal device, and the terminal device receives the area information to determine the range of each area.
  • the area information can also be pre-configured, for example, as agreed upon in an agreement.
  • the area information includes, for example, at least one of the following information: the length of each area, the width of each area, the number of areas in the longitude direction, and the number of areas in the latitude direction.
  • the terminal device sends its location information to the network device based on the area where it is located.
  • the terminal device moves into another area due to a large moving distance, which has a greater impact on the cell handover, the terminal device needs to send its location information to the network device; and the terminal device does not leave the area, the impact on the cell handover If it is not large, its location information may not be sent, thereby avoiding frequent signaling interaction.
  • the terminal device may also combine part or all of the information such as timers, counters, moving distances, and areas to implement more effective location information reporting.
  • the terminal device may send its location information to the network device based on a timer, a counter, and a moving distance.
  • the terminal device starts the timer when the preset condition is met; during the timing of the timer, each time the terminal device moves the first distance, the terminal device adds one to the count value of the counter and restarts the timer; During the timing of the device, if the count value of the counter reaches the preset value, the terminal device sends the location information to the network device.
  • the location information is sent to the network device.
  • the first distance may be configured by the network device, pre-configured, or determined by the terminal device itself.
  • the terminal device may select the first distance corresponding to the moving speed among a plurality of preset distances according to its moving speed.
  • the terminal device may send its location information to the network device based on the timer and the moving distance.
  • the terminal device starts the timer when the preset condition is met; during the timing of the timer, if the moving distance of the terminal device is greater than the second distance, the terminal device sends the location information to the network device.
  • the second distance may be configured by the network device, pre-configured, or determined by the terminal device itself.
  • the terminal device may select the second distance corresponding to the moving speed among a plurality of preset distances according to its moving speed.
  • the terminal device only needs to report the location information once during the timing of the timer, instead of reporting the location information multiple times. After the terminal device starts the timer, during the timing of the timer, if the moving distance of the terminal device is greater than the second distance, the terminal device sends its location information to the network device; if the moving distance of the terminal device is less than the second distance, the terminal The device does not need to send its location information to the network device.
  • the terminal device sends its location information to the network device based on the timer and the moving distance, including: the terminal device starts the timer when the preset condition is met; if the timer expires, the terminal device’s moving distance is greater than the first At four distances, the terminal device sends the location information to the network device.
  • the terminal device may not move when the timer expires, and the location information does not need to be updated. Therefore, in this embodiment, when the timer expires and the moving distance of the terminal device is greater than the fourth distance, the terminal device sends the location information to the network device, thereby avoiding unnecessary location reporting. For example, the terminal device starts the timer when the aforementioned preset condition is met. If the terminal device has not sent location information before, when the moving distance of the terminal device exceeds the fourth distance, the location information of the terminal device is sent to the network device. If the terminal device has previously sent location information, it will send its location information to the network device when the timer expires and the moving distance exceeds the fourth distance. The terminal device can restart the timer when sending the location information.
  • the terminal device sends the location information of the terminal device to the network device based on the counter and the moving distance, including: the terminal device starts the counter when the preset condition is met; every time the terminal device moves the fifth distance, the terminal device sets the value of the counter The count value is increased by one; if the count value of the counter reaches the preset value, the terminal device sends the location information to the network device.
  • the terminal device can also send location information based on the timer and the moving area. For example, during the timing of the timer, if the terminal device moves from the first area to the second area, its location information is sent to the network device.
  • the location information reported by the terminal device may be carried in radio resource control (Radio Resource Control, RRC) signaling, for example.
  • RRC Radio Resource Control
  • the location information and the measurement report can be carried in the same or different RRC signaling.
  • the position information reported by the terminal device may be an absolute position, that is, the coordinates of the current position of the terminal device; or, the position information may be a relative position, for example, the position information is the difference between the current position and the position where the position information was sent last time. The distance between.
  • the size of the sequence number of the above-mentioned processes does not imply the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not correspond to the implementation process of the embodiments of the present application. Constitute any limitation.
  • FIG. 5 is a schematic block diagram of a communication device 500 according to an embodiment of the present application. As shown in FIG. 5, the communication device 500 includes a transceiving unit 510 and a processing unit 520.
  • the transceiving unit 510 is configured to send the location information of the terminal device to the network device based on at least one of the following information: a timer, a counter, the moving distance of the terminal device, and the location of the terminal device , Where the location information is used for cell handover.
  • the terminal device reports its location information to the network device based on the timer, the moving distance of the terminal device, and the area where the terminal device is located, for the network device to perform cell handover related operations.
  • the network equipment can realize effective cell handover in the NTN system based on the channel quality and the real-time location of the terminal equipment, and improve the success rate of the cell handover.
  • the transceiver unit 510 is specifically configured to: when a preset condition is met, send the location information to the network device and start the timer; wherein, the processing unit 520 is further configured to: when the timer expires Previously, the transceiver unit 510 was controlled to no longer send the location information to the network device.
  • the processing unit 520 is configured to: start the timer when a preset condition is met; the transceiver unit 510 is specifically configured to: send the location information to the network device when the timer expires.
  • the processing unit 520 is configured to: when a preset condition is met, start the timer; during the timing of the timer, each time the terminal device moves a first distance, add one to the count value of the counter Restart the timer; the transceiver unit 510 is specifically configured to: during the timing of the timer, if the count value of the counter reaches a preset value, send the location information to the network device.
  • processing unit 520 is further configured to reset the counter when the timer expires.
  • the processing unit 520 is configured to: when a preset condition is met, start the timer; the transceiver unit 510 is specifically configured to: during the timing of the timer, if the moving distance of the terminal device is greater than the second Distance, the terminal device sends the location information to the network device.
  • the processing unit 520 is configured to: when a preset condition is met, start the timer; the transceiver unit 510 is specifically configured to: if the timer expires, the moving distance of the terminal device is greater than the fourth distance, Then send the location information to the network device.
  • the processing unit 520 is further configured to: according to the moving speed of the terminal device, select the timer corresponding to the moving speed among multiple timers with different timing durations.
  • processing unit 520 is further configured to restart the timer when the terminal device sends the location information to the network device.
  • the processing unit 520 is further configured to: stop the timer when the terminal device sends the location information to the network device.
  • the processing unit 520 is further configured to stop the timer when the terminal device receives the instruction information sent by the network device for instructing the terminal device to stop the timer.
  • the processing unit 520 is configured to: when a preset condition is met, start the counter; each time the terminal device moves the fifth distance, increase the count value of the counter by one; the transceiver unit 510 is specifically configured to: When the count value of the counter reaches a preset value, the location information is sent to the network device.
  • the preset condition includes at least one of the following: the terminal device receives instruction information sent by the network device for instructing the terminal device to send location information; the terminal device enters a connected state; occurs The measurement event configured by the network device; the measurement report that triggers the cell measurement; the channel quality of the serving cell of the terminal device is lower than the first threshold; the channel quality of the neighboring cell of the terminal device is higher than the second threshold; the The terminal device sends the location information every time.
  • the processing unit 520 is configured to: determine whether the distance between the current position and the position where the position information was last sent is greater than the third distance; the transceiver unit 510 is specifically configured to: When the distance between the locations at which the location information is sent is greater than the third distance, the location information is sent to the network device.
  • the processing unit 520 is further configured to select the third distance corresponding to the moving speed from among a plurality of preset distances according to its moving speed.
  • the transceiver unit 510 is configured to send the location information of the terminal device to the network device when the terminal device moves from the first area to the second area.
  • the first area and the second area are different areas within the same cell; or, the first area and the second area are areas where different cells are located; or, the first area And the second area is an area covered by different beams of the satellite.
  • the transceiver unit 510 is further configured to: receive area information sent by the network device, the area information includes at least one of the following information: the length of each area, the width of each area, the number of areas in the longitude direction , And the number of regions in the latitude direction.
  • the location information is carried in radio resource control RRC signaling.
  • the location information and the measurement report are carried in the same or different RRC signaling.
  • the location information includes: the current location of the terminal device; or, the distance between the current location and the location where the location information was sent last time.
  • the processing unit 520 is further configured to perform cell measurement to obtain a measurement report; the transceiver unit 510 is further configured to send the measurement report to the network device, and the measurement report is used for cell handover.
  • the network device is a satellite, and the distance between the terminal device and the network device is: the distance between the terminal device and the satellite; or, the network device is a ground station, so The distance between the terminal device and the network device is the sum of the distance between the terminal device and the satellite and the distance between the satellite and the ground station.
  • terminal device 500 can perform the corresponding operations performed by the terminal device in the method shown in FIG. 4, which is not repeated here for brevity.
  • FIG. 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a terminal device of an embodiment of the present application, and the communication device 600 may implement corresponding procedures implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details are not described herein again.
  • the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the network device in each method in the embodiments of the present application.
  • the network device may be a satellite or a ground station.
  • Fig. 7 is a schematic structural diagram of an apparatus for cell handover according to an embodiment of the present application.
  • the apparatus 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the apparatus 700 may include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the device 700 includes an input interface 730.
  • the processor 710 can control the input interface 730 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the device 700 includes an output interface 740.
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the apparatus 700 may be applied to the network equipment in the embodiments of the present application, and the communication apparatus may implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • the network device may be a satellite or a ground station.
  • the apparatus 700 may be applied to the terminal equipment in the embodiments of the present application, and the communication apparatus may implement the corresponding procedures implemented by the terminal equipment in the various methods of the embodiments of the present application.
  • the communication apparatus may implement the corresponding procedures implemented by the terminal equipment in the various methods of the embodiments of the present application.
  • the device 700 is, for example, a chip.
  • the chip may be a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-chip.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • 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 can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), and synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic Random access memory (Synch Link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. Go into details.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it will not Go into details.
  • the network device may be a satellite or a ground station.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the network device may be a satellite or a ground station.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer program may be applied to the network device in the embodiment of the present application.
  • the computer program is run on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the network equipment can be a satellite or a ground station.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • B corresponding (corresponding) to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit 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 may be Integrate 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 of the present application.
  • 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 function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

提供了一种小区切换的方法和设备，能够在NTN系统中实现有效的小区切换。所述方法包括：终端设备基于以下信息中的至少一种，向网络设备发送所述终端设备的位置信息：定时器、计数器、所述终端设备的移动距离、以及所述终端设备所在的区域，其中，所述位置信息用于小区切换。

Description

小区切换的方法和设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及小区切换的方法。
背景技术
在蜂窝网络中，终端设备可以基于网络配置的测量事件，进行小区测量，并在满足条件时向网络设备发送测量报告。源基站可以基于测量报告选择待切换的目标基站。但是，对于非地面通信网络(Non Terrestrial Network，NTN)系统，由于其采用卫星通信的方式向地面用户提供通信服务，终端设备与卫星之间的信号传输时延大幅增加，并且存在远近效应的问题，从而使得测量报告的有效性大大降低，影响小区切换的性能。
发明内容
本申请提供一种小区切换的方法和设备，能够在NTN系统中实现有效的小区切换。
第一方面，提供了一种小区切换的方法，包括：终端设备基于以下信息中的至少一种，向网络设备发送所述终端设备的位置信息：定时器、所述终端设备的移动距离、以及所述终端设备所在的区域，其中，所述位置信息用于小区切换。
第二方面，提供了一种终端设备，所述终端设备可以执行上述第一方面或第一方面的任意可选的实现方式中的方法。具体地，所述终端设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的功能模块。
第三方面，提供了一种通信设备，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于调用并运行该存储器中存储的计算机程序，以执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第四方面，提供了一种用于小区切换的装置，用于实现上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，所述装置包括处理器，用于从存储器中调用并运行计算机程序，使得安装有所述装置的设备执行如上述第一方面或第一方面的任意可能的实现方式中的方法。
所述装置例如可以是芯片。
第五方面，提供了一种计算机可读存储介质，用于存储计算机程序。所述计算机程序使得计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第六方面，提供了一种计算机程序产品，包括计算机程序指令。所述计算机程序指令使得计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第七方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
基于上述技术方案，终端设备基于定时器、终端设备的移动距离、以及终端设备所在区域等信息，向网络设备上报其位置信息，以用于网络设备执行小区切换的相关操作。网络设备可以基于信道质量以及终端设备的实时位置，实现NTN系统中有效的小区切换，提高小区切换的成功率。
附图说明
图1是本申请实施例应用的一种可能的无线通信系统的示意图。
图2是小区切换的流程交互图。
图3是条件切换的流程交互图。
图4是本申请实施例的小区切换的方法的示意性流程图。
图5是本申请实施例的终端设备的示意性框图。
图6是本申请实施例的终端设备的示意性结构图。
图7是本申请实施例的用于小区切换的装置的示意性结构图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile Communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、5G系统或其他通信系统等。
通常，传统的通信系统支持的连接数有限，也易于实现。然而，随着通信技术的发展，移动通信系统不仅支持传统的通信，还将支持例如设备到设备(Device to Device，D2D)通信、机器到机器(Machine to Machine，M2M)通信、机器类型通信(Machine Type Communication，MTC)、以及车辆间(Vehicle to Vehicle，V2V)通信等，本申请实施例也可应用于这些通信系统。
另外，本申请实施例的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景、双连接(Dual Connectivity，DC)场景、独立(Standalone，SA)布网场景等。
示例性的，本申请实施例应用的通信系统100如图1所示。通信系统100包括网络设备110。网络设备110可以是与终端设备120进行通信的设备。网络设备110可以为特定地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。
本申请实施例中，网络设备110例如可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)；WCDMA系统中的基站(NodeB，NB)；LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)；云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器。或者，网络设备110可以是移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。或者，网络设备110也可以是NTN系统中的卫星。
通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。终端设 备120可以是移动的或固定的。终端设备120例如可以是用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、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。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来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)中的终端设备等，本申请实施例对此并不限定。此外，终端设备120之间可以进行终端直连(Device to Device，D2D)通信。
网络设备110可以为小区提供服务，终端设备120通过该小区对应的传输资源与网络设备110进行通信。该小区可以是网络设备110对应的小区。小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站。这里的小小区可以包括城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等。这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
图1示例性地示出了一个网络设备和两个终端设备，但本申请并不限于此。通信系统100可以包括多个网络设备，并且每个网络设备的覆盖范围内可以包括其它数量的终端设备。此外，通信系统100还可以包括网络控制器、移动性管理实体等其他网络实体。
本申请实施例可以应用于非地面通信网络(Non Terrestrial Network，NTN)系统。这时，图1中的网络设备110可以通过卫星与终端设备之间进行通信，或者网络设备110本身为卫星。
NTN一般采用卫星通信的方式向地面用户提供通信服务。相比地面蜂窝网通信，卫星通信具有很多独特的优点。首先，卫星通信不受用户地域的限制，例如一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备或由于人口稀少而不做通信覆盖的区域，而对于卫星通信来说，由于一颗卫星即可以覆盖较大的地面，加之卫星可以围绕地球做轨道运动，因此理论上地球上每一个角落都可以被卫星通信覆盖。其次，卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都可以以较低的成本覆盖到，从而使这些地区的人们享受到先进的语音通信和移动互联网技术，有利于缩小与发达地区的数字鸿沟，促进这些地区的发展。再次，卫星通信距离远，且通信距离增大时通讯成本没有明显增加。最后，卫星通信的稳定性高，不受自然灾害的限制。
通信卫星按照轨道高度的不同分为低地球轨道(Low-Earth Orbit，LEO)卫星、中地球轨道(Medium-Earth Orbit，MEO)卫星、地球同步轨道(Geostationary Earth Orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。目前阶段主要研究的是LEO卫星和GEO卫星。其中，LEO卫星的高度范围为500km～1500km，相应轨道周期约为1.5小时～2小时。用户间单跳通信的信号传播延迟一般小于20ms。最大卫星可视时间为20分钟，信号传播距离短，链路损耗少，对用户终端的发射功率要求不高。GEO卫星的轨道高度为35786km，围绕地球旋转周期为24小时，用户间单跳通信的信号传播延迟一般为250ms。
为了保证卫星的覆盖以及提升整个卫星通信系统的系统容量，卫星采用多波束覆盖地面，一颗卫星可以形成几十甚至数百个波束来覆盖地面；一个卫星波束可以覆盖直径几十 至上百公里的地面区域。
在目前的NR系统中，当正在使用网络服务的终端从一个小区移动到另一个小区，或由于无线传输业务负荷量调整、激活操作维护、设备故障等原因，为了保证通信的连续性和服务的质量，系统要将该终端设备与源小区的通信链路转移到新小区上，即执行小区切换过程。应理解，切换小区可以理解为切换网络设备，例如终端设备从源基站(Source gNB)切换至目标基站(TargegNB)。
为了便于理解，下面以基于Xn接口的切换过程为例，描述小区切换的流程。如图2所示，所述切换流程主要包括切换准备、执行切换、以及切换完成这三个过程，具体包括以下部分或全部步骤：
在201中，终端设备进行测量控制和测量上报(Measurement Control and Report)。
在202中，源基站进行切换判决(Handover Decision)。
在203中，源基站向目标基站发送切换请求(Handover Request)消息。
其中，切换请求消息中包括切换准备的相关信息。
在204中，目标基站进行接纳控制(Admission Request)，以提高切换的成功率。
在205中，目标基站向源基站发送切换请求确认(Handover Request Acknowledge)消息。
其中，切换请求确认消息包括目标基站生成的切换命令，源基站不允许对目标基站生成的切换命令进行任何修改，而是直接将切换命令转发给终端设备。
在206中，无线接入网(Wireless Access Network，RAN)切换开始(Handover Initiation)。
终端设备接收到切换命令后立即执行切换过程，即断开源基站并与目标基站连接，例如发起随机接入、发送RRC切换完成消息给目标基站等。
在207中，SN状态转移(SN Status Transfer)。
源基站向目标基站发送序列号(Sequence Number，SN)状态。
在208中，切换完成。
在209中，目标基站向AMF发送路径转换请求(Path Switch Request)消息，以告知其终端设备更换了小区。
此时空口的切换已经成功完成。
在210中，在用户面功能(User Plane Function，UPF)进行路径切换(Path Switch in UPF(s))。
在211中，接入与移动性管理功能(Access and Mobility Management Function，AMF)向目标基站发送路径转换请求确认(Path Switch Request Acknowledge)消息。
步骤209至211中，目标基站与AMF和UPF完成路径转换过程，该过程的目的是将用户面的数据路径从源基站转换到目标基站。
在转换了路径以后，前转路径和新路径的数据包在目标基站处可能会交替到达。目标基站可以先传递所有的前转数据包给终端设备，然后再传递从新路径接收的包。这样可以保证正确的传输顺序。为了辅助在目标基站处的重排功能，在转换路径以后，AMF可以立即在旧路径发送一个或者多个“结束标识(end marker)”，其中不包括用户数据。在发送含有结束标识的包以后，AMF不应该在旧路径发送任何数据包。在收到含有结束标识的包以后，如果前转对这个承载是激活的，源基站应该将此包发送给目标基站。在察觉了含 有结束标识的包以后，目标基站应该将其丢弃并发起任何必要的流程来维持用户的按序递交。
在212中，目标基站向源基站发送UE上下文释放消息。
目标基站在收到路径转换确认消息以后，通知源基站上述切换成功，并触发源基站的资源释放。源基站收到UE上下文释放消息后，可以释放无线承载和与UE上下文相关的控制面资源。
另外，对于某些特殊场景，比如终端设备在高速移动或者高频条件下，需要终端设备频繁地进行切换(Handover，HO)。因此，可以采用条件切换(Conditional handover)。条件切换避免了切换准备时间过长，导致终端设备需要切换的时候已经过晚的问题，可以为终端设备提前配置HO命令(HO command)。另一方面，对于高铁场景，终端设备的运行轨迹是特定的，所以源基站可以提前把目标基站配置给终端设备，并且在HO command中携带用于触发终端设备进行切换的条件。当满足所配置的条件时，终端设备向目标基站发起接入请求。
例如图3所示，在301中，终端设备向源基站发送测量报告。
在302中，源基站与目标基站之间执行切换准备。
在303中，源基站向终端设备发送切换命令。
在304中，满足切换条件时，终端设备与目标基站之间执行随机接入。
与测量上报、切换准备、切换命令相关的过程可以参考前述图2中的相应描述，为了简洁，这里不再赘述。
在进行小区切换之前，需要进行测量配置，网络设备可以向终端设备配置测量对象、测量条件或者切换条件等，以用于终端设备判断是否需要进行小区切换。所述的测量指连接状态下的移动性测量。
测量对象是以频点为基本单位，每个被配置的测量对象为一个单独频点，拥有单独的测量对象标识，对于演进通用陆地无线接入(Evolved Universal Terrestrial Radio Access，E-UTRA)同频和异频测量，测量对象是一个单一的E-UTRA载波频率。与该载波频率相关的小区，E-UTRA可能配置小区偏移量(Offset)列表和黑名单小区列表。在测量评估及测量报告中不对黑名单的小区进行任何操作。
上报配置按照类型分为事件触发上报和周期触发上报，每个上报配置拥有单独的标识。事件触发上报配置包括事件种类及门限值，以及满足触发条件的持续时间(Time to Trigger，TTT)，TTT也可以称为触发时间。周期性触发类型的上报配置包括上报周期，以及周期性触发的目的。
目前NR系统中支持的测量事件包括以下几种：
事件A1：服务小区高于一个绝对门限(serving>threshold)；
事件A2：服务小区低于一个绝对门限(serving<threshold)；
事件A3：邻小区比主小区/主辅小区高于一个偏移量；
事件A4：邻小区高于一个绝对门限(Neighbour>threshold)；
事件A5：主小区/主辅小区低于一个绝对门限1，且邻小区/辅小区高于另一个绝对门限2；
事件A6：邻小区比辅小区高于一个偏移量；
事件B1：邻小区高于一个绝对门限；
事件B2：主小区高于一个绝对门限1，且邻小区高于另一个绝对门限2。
单独的测量标识将测量对象与特定的上报配置进行关联，如果终端设备达到了测量开启门限，终端设备会根据测量标识的有无判断是否进行该测量。
当终端设备完成测量之后，当满足一定触发条件时进行测量上报的评估，如果满足上报条件，终端设备则将进行测量报告的填写，并发送给网络设备。
测量上报主要分为三类：
1、事件触发
终端设备仅当满足了网络配置的测量事件进入门限并持续一段时间后，才会触发测量报告的发送，测量报告发送一次后流程结束。此准则对应的上报配置为：
触发类型为“事件”包括A1-A6，B1-B2中得一种测量事件及其门限参数；
上报次数为1；
上报间隔无论配为何值，UE均忽略。
2、周期性上报
网络配置测量后，终端设备按照配置内容进行相应频点的测量，并按照规定的上报周期及间隔发送测量报告。
触发周期为“周期”，包含“reportCGI”、“reportStrongestCell”。
如果上报目的为“reportCGI”上报次数等于1，如果上报目的为“reportStrongestCell”，上报次数可以大于1。
终端设备一旦被配置了“reportCGI”目的的上报后将开启T321定时器。为了网络能够尽快获得组建邻小区列表所需信息。如果在定时器超时前已经获得了上报所需的内容，终端设备可以停止T321并提前发起上报。
3、事件触发周期上报
终端设备仅当满足了网络配置的测量事件进入门限并持续一段时间后，才会触发测量报告的发送。测量上报被触发后，会开启多次测量之间的定时器以及测量次数的计数器，直至上报次数达到要求后流程结束。此准则对应的上报配置为：
触发类型为“事件”，包含A1～A5中的一种测量事件及其门限参数；
上报次数大于1；
上报间隔有效，网络按照配置的间隔参数设置上报周期定时器。
在NTN系统中，卫星距离地面较远，终端设备与卫星之间的信号传输时延大幅增加，源基站在接收到测量报告时，该测量报告则可能失效。另外，由于卫星的不断移动，终端设备针对该卫星上报的测量报告也会失效。这样就无法保证有效的小区切换。
为此，本申请提供一种小区切换方案，能够获得更准确的测量报告，有效地实现了NTN系统中的小区切换。
图4是本申请实施例的小区切换的方法的示意性流程图。图4所示的方法可以由终端设备执行。该终端设备例如为图1中的终端设备120。如图4所示，所述方法400包括以下步骤中的部分或全部。
在410中，终端设备基于以下信息中的至少一种，向网络设备发送终端设备的位置信息：定时器、计数器、终端设备的移动距离、以及终端设备所在的区域。
其中，该位置信息用于小区切换。
该实施例中，终端设备需要向网络设备上报其位置信息，以用于网络设备执行小区切换的相关操作。网络设备可以基于信道质量以及终端设备的实时位置，实现NTN系统中有效的小区切换。
该网络设备可以是卫星；或者是地面站，例如基站等。
其中，网络设备为卫星时，终端设备与该网络设备之间的距离为终端设备与该卫星之间的距离；网络设备为地面站时，终端设备与该网络设备之间的距离为终端设备与卫星之间的距离，以及卫星与该地面站之间的距离之和。
例如，对于透明(transparent)GEO/LEO的情况，卫星可以实现基站的功能，因此网络设备即为卫星，或者说，该卫星作为网络设备与终端设备进行通信。这时，终端设备与网络设备之间的即为终端设备与卫星之间的距离。又例如，对于再生(regenerative)GEO/LEO的情况，来自终端设备的上行数据通过卫星发送给地面站，而来自地面站的下行数据通过卫星发送给终端设备，因此网络设备即为地面站。这时，终端设备与网络设备之间的距离包括终端设备与卫星之间的距离，以及卫星与地面站之间的距离之和。卫星接收到终端设备上报的测量报告后，会转发给地面站。
对于LEO的情况，卫星是在移动的，卫星与地面站之间的距离也在变化；而对于GEO的情况，卫星是不动的，卫星与地面站之间的距离是固定的。
终端设备进行小区测量，得到测量报告，并向网络设备发送该测量报告。网络设备可以基于该测量报告，以及终端设备的位置信息，执行对终端设备的移动性管理，例如小区切换等。例如，网络设备可以根据终端设备的位置信息，确定当前终端设备与网络设备之间的距离，并根据他们之间的距离变化情况，对测量报告中的测量值进行调整，使得该测量报告适用于当前位置的终端设备与网络设备，从而网络设备能够基于调整后的测量报告，执行小区切换的相关操作，例如执行图2和图3中由源基站执行的相关操作，从而为终端设备选择合适的目标小区，以实现NTN系统中的小区切换。
终端设备可以基于定时器、计数器、终端设备移动情况等，实现位置信息的上报。终端设备的移动情况可以通过终端设备的移动距离和终端设备所在区域等信息来表征。下面对终端设备发送位置信息的过程进行具体描述。
方式1
在410中，终端设备基于定时器，向网络设备发送终端设备的位置信息。
例如，终端设备在满足预设条件时，启动该定时器；并在该定时器超时时，向网络设备发送其位置信息。
又例如，终端设备在满足预设条件时，向网络设备发送其位置信息并启动该定时器。其中，在该定时器超时之前，终端设备不再向网络设备发送该位置信息。
应理解，该预设条件例如可以包括以下中的至少一种：
终端设备接收到网络设备发送的用于指示终端设备发送位置信息的指示信息；
终端设备进入连接态；
发生网络设备配置的测量事件；
触发小区测量的测量报告；
终端设备的服务小区的信道质量低于第一阈值；
终端设备的邻小区的信道质量高于第二阈值；
终端设备每次发送该位置信息。
该实施例中，通过定时器控制终端设备上报位置信息的行为，可以避免频繁的上报。该定时器的计时时长可以是网络设备配置的、预配置的、或者终端设备自行确定的。
例如，终端设备可以根据其移动速度，在计时时长不同的多个定时器中，选择与该移动速度对应的该定时器。
假设网络设备为终端设备配置了3个定时器，分别为定时器1、定时器2和定时器3。终端设备如果处于低速移动状态，则选择定时器1；终端设备如果处于中速移动状态，则选择定时器2；终端设备如果处于高速移动状态，则选择定时器3。其中，例如可以设置定时器1的计时时长＞定时器2的计时时长＞定时器3的计时时长。
终端设备可以根据在时间T内移动的距离，判断处于低速移动状态、中速移动状态、还是高速移动状态。例如，如果在时间T内移动的距离大于D1，则认为处于高速移动状态；如果在时间T内移动的距离小于D2，则认为处于低速移动状态；如果在时间T内移动的距离为与D1和D2之间，则认为处于中速移动状态。
在选择定时器后，终端设备基于该定时器，执行位置信息的上报。
其中，终端设备可以基于前述的预设条件启动定时器；网络设备也可以通过指示信息，来指示终端设备启动该定时器。
终端设备在满足预设条件时启动该定时器，并在该定时器超时时，向网络设备发送其位置信息。这时，终端设备可以在向网络设备发送该位置信息时，重启该定时器，以实现周期性的位置上报；或者，对于非周期性的位置上报，终端设备可以在向网络设备发送该位置信息时，停止该定时器。
终端设备还可以在其他条件下，启动或重启该定时器。例如，终端设备进入连接态时，启动该定时器；发生网络设备配置的测量事件，比如前述时间A1-A6和B1-B2时，启动该定时器；触发测量报告时，启动该定时器；服务小区的信道质量差到一定程度时，启动该定时器；邻小区的信道质量优于一定程度时，启动该定时器；或者，该定时器是终端设备前一次发送位置信息时启动的。
进一步地，可选地，终端设备可以在接收到网络设备发送的用于指示终端设备停止该定时器的指示信息时，停止该定时器。
方式2
在410中，终端设备基于其移动距离，向网络设备发送该位置信息。
例如，终端设备判断当前位置与上一次发送位置信息时所处的位置之间的距离，是否大于第三距离；若大于第三距离，终端设备向网络设备发送该位置信息。
具体地，终端设备在移动过程中，如果发现其当前所处的位置，与上一次发送位置信息时所处的位置之间的距离，超过了第三距离，则终端设备向网络设备发送其位置信息。如果当前所处的位置，与上一次发送位置信息时所处的位置之间的距离没有超过第三距离，则无需发送该位置信息。
其中，该第三距离可以是网络设备配置的、预配置的、或者终端设备自行确定的。例如，终端设备可以根据其移动速度，在多个预设距离中，选择与该移动速度对应的该第三距离。
假设网络设备为终端设备配置了3个距离值，分别为D1、D2和D3。终端设备如果处于低速移动状态，则选择第三距离为D1；终端设备如果处于中速移动状态，则选择第三距离为D2；终端设备如果处于高速移动状态，则选择第三距离为D3。其中，例如可以设置D1＜D2＜D3。
终端设备可以根据在时间T内移动的距离，判断处于低速移动状态、中速移动状态、还是高速移动状态。例如，如果在时间T内移动的距离大于D1，则认为处于高速移动状态；如果在时间T内移动的距离小于D2，则认为处于低速移动状态；如果在时间T内移动的距离为与D1和D2之间，则认为处于中速移动状态。
该实施例中，终端设备基于移动距离，向网络设备发送其位置信息。由于终端设备的移动距离较大，例如移动距离超过第三距离，而对小区切换造成较大影响时，终端设备需要向网络设备发送其位置信息，以便网络设备对测量结果进行调整并用于小区切换；而终端设备的移动距离较小，而对小区切换的影响不大时，则可以不发送其位置信息，从而避免频繁的信令交互。
方式3
在410中，终端设备基于所在的区域，向网络设备发送该位置信息。
例如，终端设备从第一区域移动至第二区域时，向网络设备发送该位置信息。
本申请实施例对区域的划分不做限定。例如，第一区域和第二区域为同一小区内的不同区域；或者，第一区域和第二区域为不同小区所在的区域；或者，第一区域和第二区域为卫星的不同波束覆盖的区域。
也就是说，每个小区可以作为一个区域；一个小区也可以被划分为多个区域；卫星的每个波束的覆盖范围也可以作为一个区域。
不同区域可以具有不同的标识。区域大小和数量可以从区域信息中获取。该区域信息可以是网络设备发送给终端设备的，终端设备接收该区域信息，从而确定各个区域的范围。该区域信息也可以是预配置的，例如协议约定的。
该区域信息例如包括以下信息中的至少一种：每个区域的长度、每个区域的宽度、经度方向上的区域数量、以及纬度方向上的区域数量。
终端设备每移动到新的区域时，可以向网络设备发送其位置信息。如果终端设备所在的区域不变，即终端设备在一个区域内移动，则终端设备不需要发送其位置信息。
该实施例中，终端设备基于所在的区域，向网络设备发送其位置信息。当终端设备的移动距离较大导致其进入另一区域，而对小区切换造成较大影响时，终端设备需要向网络设备发送其位置信息；而终端设备未离开该区域时，对小区切换的影响不大，则可以不发送其位置信息，从而避免频繁的信令交互。
此外，本申请实施例中，终端设备还可以结合定时器、计数器、移动距离、所在区域等信息中的部分或全部，以实现更有效的位置信息的上报。
在一种实现方式中，终端设备可以基于定时器、计数器和移动距离，向网络设备发送其位置信息。
例如，终端设备在满足预设条件时，启动该定时器；在该定时器的计时期间，终端设备每移动第一距离，终端设备将计数器的计数值加一并重启该定时器；在该定时器的计时期间，若该计数器的计数值达到预设值，终端设备向网络设备发送该位置信息。
也就是说，终端设备移动超过第一距离的次数达到阈值时，向网络设备发送位置信息。
其中，该第一距离可以是网络设备配置的、预配置的、或者终端设备自行确定的。例如，终端设备可以根据其移动速度，在多个预设距离中，选择与该移动速度对应的该第一距离。
在另一种实现方式中，终端设备可以基于定时器和移动距离，向网络设备发送其位置信息。
例如，终端设备在满足预设条件时，启动该定时器；在该定时器的计时期间，若终端设备的移动距离大于第二距离，终端设备向网络设备发送该位置信息。
其中，第二距离可以是网络设备配置的、预配置的、或者终端设备自行确定的。例如，终端设备可以根据其移动速度，在多个预设距离中，选择与该移动速度对应的该第二距离。
该实施例中，终端设备在定时器的计时期间，只需要进行一次位置信息的上报，而不会多次上报位置信息。终端设备启动该定时器后，在该定时器的计时期间，如果终端设备的移动距离大于第二距离，则终端设备向网络设备发送其位置信息；如果终端设备的移动距离小于第二距离，终端设备无需向网络设备发送其位置信息。
又例如，终端设备基于定时器和移动距离，向网络设备发送其位置信息，包括：终端设备在满足预设条件时，启动该定时器；若该定时器超时时，终端设备的移动距离大于第四距离，终端设备向网络设备发送该位置信息。
如果采用定时器超时时发送位置信息的方式，那么终端设备在定时器超时时，可能并没有发生移动，位置信息并不需要更新。因此，该实施例中，该定时器超时且终端设备的移动距离大于第四距离时，终端设备才向网络设备发送该位置信息，从而避免了不必要的位置上报。例如，终端设备在满足前述的预设条件时，启动该定时器。如果终端设备此前没有发送过位置信息，则终端设备的移动距离超过第四距离时，向网络设备发送其位置信息。如果终端设备此前发送过位置信息，则在该定时器超时且移动距离超过第四距离时，向网络设备发送其位置信息。终端设备在发送该位置信息时，可以重启该定时器。
又例如，终端设备基于计数器和移动距离，向网络设备发送终端设备的位置信息，包括：终端设备在满足预设条件时，启动该计数器；终端设备每移动第五距离，终端设备将该计数器的计数值加一；若计数器的计数值达到预设值，终端设备向网络设备发送该位置信息。
此外，终端设备还可以基于定时器和移动区域发送位置信息。例如，在定时器的计时期间，如果终端设备从第一区域移动至第二区域，则向网络设备发送其位置信息。
当终端设备结合定时器、计数器、移动距离、所在区域等因素来发送位置信息时，可以避免不必要的位置上报，例如终端设备没有发生移动时产生的位置上报，从而减少信令交互。
本申请实施例中，终端设备上报的该位置信息例如可以承载于无线资源控制(Radio Resource Control，RRC)信令中。其中，该位置信息与测量报告可以承载于相同或者不同的RRC信令中。
终端设备上报的该位置信息可以是绝对位置，即终端设备的当前位置的坐标；或者，该位置信息可以是相对位置，例如该位置信息为当前位置与前一次发送位置信息时所处的位置之间的距离。
需要说明的是，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。
在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文中详细描述了根据本申请实施例的下行信号传输的方法，下面将结合图5至图7，描述根据本申请实施例的装置，方法实施例所描述的技术特征适用于以下装置实施例。
图5是根据本申请实施例的通信设备500的示意性框图。如图5所示，该通信设备500包括收发单元510和处理单元520。
所述收发单元510用于：用于基于以下信息中的至少一种，向网络设备发送所述终端设备的位置信息：定时器、计数器、所述终端设备的移动距离、以及所述终端设备所在的区域，其中，所述位置信息用于小区切换。
因此，终端设备基于定时器、终端设备的移动距离、以及终端设备所在区域等信息，向网络设备上报其位置信息，以用于网络设备执行小区切换的相关操作。网络设备可以基于信道质量以及终端设备的实时位置，实现NTN系统中有效的小区切换，提高小区切换的成功率。
可选地，收发单元510具体用于：在满足预设条件时，向所述网络设备发送所述位置信息并启动所述定时器；其中，处理单元520还用于：在所述定时器超时之前，控制收发单元510不再向网络设备发送所述位置信息。
可选地，处理单元520用于：满足预设条件时，启动所述定时器；收发单元510具体用于：在所述定时器超时时，向所述网络设备发送所述位置信息。
可选地，处理单元520用于：在满足预设条件时，启动所述定时器；在所述定时器的计时期间，所述终端设备每移动第一距离，将计数器的计数值加一并重启所述定时器；收发单元510具体用于：在所述定时器的计时期间，若所述计数器的计数值达到预设值，向所述网络设备发送所述位置信息。
可选地，处理单元520还用于：在所述定时器超时时，重置所述计数器。
可选地，处理单元520用于：在满足预设条件时，启动所述定时器；收发单元510具体用于：在所述定时器的计时期间，若所述终端设备的移动距离大于第二距离，所述终端设备向所述网络设备发送所述位置信息。
可选地，处理单元520用于：在满足预设条件时，启动所述定时器；收发单元510具体用于：若所述定时器超时时，所述终端设备的移动距离大于第四距离，则向所述网络设备发送所述位置信息。
可选地，处理单元520还用于：根据所述终端设备的移动速度，在计时时长不同的多个定时器中，选择与所述移动速度对应的所述定时器。
可选地，处理单元520还用于：在所述终端设备向所述网络设备发送所述位置信息时，重启所述定时器。
可选地，处理单元520还用于：在所终端设备向所述网络设备发送所述位置信息时，停止所述定时器。
可选地，处理单元520还用于：在所述终端设备接收到所述网络设备发送的用于指示 所述终端设备停止所述定时器的指示信息时，停止所述定时器。
可选地，处理单元520用于：在满足预设条件时，启动所述计数器；所述终端设备每移动第五距离，将所述计数器的计数值加一；收发单元510具体用于：若所述计数器的计数值达到预设值，向所述网络设备发送所述位置信息。
可选地，所述预设条件包括以下中的至少一种：所述终端设备接收到网络设备发送的用于指示所述终端设备发送位置信息的指示信息；所述终端设备进入连接态；发生所述网络设备配置的测量事件；触发小区测量的测量报告；所述终端设备的服务小区的信道质量低于第一阈值；所述终端设备的邻小区的信道质量高于第二阈值；所述终端设备每次发送所述位置信息。
可选地，处理单元520用于：判断当前位置与上一次发送所述位置信息时所处的位置之间的距离，是否大于第三距离；收发单元510具体用于：在当前位置与上一次发送所述位置信息时所处的位置之间的距离大于所述第三距离时，向所述网络设备发送所述位置信息。
可选地，处理单元520还用于：根据其移动速度，在多个预设距离中，选择与所述移动速度对应的所述第三距离。
可选地，收发单元510用于：所述终端设备从第一区域移动至第二区域时，向所述网络设备发送所述终端设备的位置信息。
可选地，所述第一区域和所述第二区域为同一小区内的不同区域；或者，所述第一区域和所述第二区域为不同小区所在的区域；或者，所述第一区域和所述第二区域为卫星的不同波束覆盖的区域。
可选地，收发单元510还用于：接收网络设备发送的区域信息，所述区域信息包括以下信息中的至少一种：每个区域的长度、每个区域的宽度、经度方向上的区域数量、以及纬度方向上的区域数量。
可选地，所述位置信息承载于无线资源控制RRC信令中。
可选地，所述位置信息与测量报告承载于相同或者不同的RRC信令中。
可选地，所述位置信息包括：所述终端设备的当前位置；或者，所述当前位置与前一次发送所述位置信息时所处的位置之间的距离。
可选地，处理单元520还用于：进行小区测量，得到测量报告；收发单元510还用于：向所述网络设备发送所述测量报告，所述测量报告用于小区切换。
可选地，所述网络设备为卫星，所述终端设备与所述网络设备之间的距离为：所述终端设备与所述卫星之间的距离；或者，所述网络设备为地面站，所述终端设备与所述网络设备之间的距离为：所述终端设备与卫星之间的距离，以及所述卫星与所述地面站之间的距离之和。
应理解，终端设备500可以执行图4所示的方法中由终端设备执行的相应操作，为了简洁，在此不再赘述。
图6是本申请实施例的一种通信设备600的示意性结构图。图6所示的通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图6所示，通信设备600还可以包括存储器620。其中，处理器610可以 从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，如图6所示，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，通信设备600具体可为本申请实施例的终端设备，并且该通信设备600可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
可选地，通信设备600具体可为本申请实施例的网络设备，并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。所述网络设备可以是卫星或者地面站。
图7是本申请实施例的用于小区切换的装置的示意性结构图。图7所示的装置700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，装置700可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
可选地，装置700包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，装置700包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，装置700可以应用于本申请实施例中的网络设备，并且该通信装置可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。所述网络设备可以是卫星或者地面站。
可选地，装置700可以应用于本申请实施例中的终端设备，并且该通信装置可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
装置700例如是芯片。所述芯片可以为系统级芯片、系统芯片、芯片系统、或者片上系统芯片等。
本申请实施例中的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处 理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。
其中，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch Link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。可选地，该计算机可读存储介质可应用于本申请实施例中的终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，不再赘述。可选地，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，不再赘述。所述网络设备可以是卫星或者地面站。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。可选地，该计算机程序产品可应用于本申请实施例中的终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。可选地，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。所述网络设备可以是卫星或者地面站。
本申请实施例还提供了一种计算机程序。可选地，该计算机程序可应用于本申请实施例中的终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。可选地，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。所 述网络设备可以是卫星或者地面站。
在本申请实施例中，术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例中，“与A相应(对应)的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清除地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，该单元的划分，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申请实施例的方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (51)

  1. 一种小区切换的方法，其特征在于，所述方法包括：
    终端设备基于以下信息中的至少一种，向网络设备发送所述终端设备的位置信息：定时器、计数器、所述终端设备的移动距离、以及所述终端设备所在的区域，其中，所述位置信息用于小区切换。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述定时器，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备在满足预设条件时，向所述网络设备发送所述位置信息并启动所述定时器；
    其中，所述方法还包括：在所述定时器超时之前，所述终端设备不再向网络设备发送所述位置信息。
  3. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述定时器，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备在满足预设条件时，启动所述定时器；
    所述终端设备在所述定时器超时时，向所述网络设备发送所述位置信息。
  4. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述定时器、所述计数器和所述移动距离，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备在满足预设条件时，启动所述定时器；
    在所述定时器的计时期间，所述终端设备每移动第一距离，所述终端设备将计数器的计数值加一并重启所述定时器；
    在所述定时器的计时期间，若所述计数器的计数值达到预设值，所述终端设备向所述网络设备发送所述位置信息。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    所述定时器超时时，重置所述计数器。
  6. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述定时器和所述移动距离，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备在满足预设条件时，启动所述定时器；
    在所述定时器的计时期间，若所述终端设备的移动距离大于第二距离，所述终端设备向所述网络设备发送所述位置信息。
  7. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述定时器和所述移动距离，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备在满足预设条件时，启动所述定时器；
    若所述定时器超时时，所述终端设备的移动距离大于第四距离，所述终端设备向所述网络设备发送所述位置信息。
  8. 根据权利要求2至7中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据其移动速度，在计时时长不同的多个定时器中，选择与所述移动速度对应的所述定时器。
  9. 根据权利要求3至8中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备在向所述网络设备发送所述位置信息时，重启所述定时器。
  10. 根据权利要求3至8中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备在向所述网络设备发送所述位置信息时，停止所述定时器。
  11. 根据权利要求2至9中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备在接收到所述网络设备发送的用于指示所述终端设备停止所述定时器的指示信息时，停止所述定时器。
  12. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述计数器和所述移动距离，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备在满足预设条件时，启动所述计数器；
    所述终端设备每移动第五距离，所述终端设备将所述计数器的计数值加一；
    若所述计数器的计数值达到预设值，所述终端设备向所述网络设备发送所述位置信息。
  13. 根据权利要求2至12中任一项所述的方法，其特征在于，所述预设条件包括以下中的至少一种：
    所述终端设备接收到网络设备发送的用于指示所述终端设备发送位置信息的指示信息；
    所述终端设备进入连接态；
    发生所述网络设备配置的测量事件；
    触发小区测量的测量报告；
    所述终端设备的服务小区的信道质量低于第一阈值；
    所述终端设备的邻小区的信道质量高于第二阈值；
    所述终端设备每次发送所述位置信息。
  14. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述移动距离，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备判断当前位置与上一次发送所述位置信息时所处的位置之间的距离，是否大于第三距离；
    若大于所述第三距离，所述终端设备向所述网络设备发送所述位置信息。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据其移动速度，在多个预设距离中，选择与所述移动速度对应的所述第三距离。
  16. 根据权利要求1所述的方法，其特征在于，所述终端设备基于所述终端设备所在的区域，向网络设备发送所述终端设备的位置信息，包括：
    所述终端设备从第一区域移动至第二区域时，向所述网络设备发送所述终端设备的位置信息。
  17. 根据权利要求16所述的方法，其特征在于，
    所述第一区域和所述第二区域为同一小区内的不同区域；或者，
    所述第一区域和所述第二区域为不同小区所在的区域；或者，
    所述第一区域和所述第二区域为卫星的不同波束覆盖的区域。
  18. 根据权利要求16或17所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收网络设备发送的区域信息，所述区域信息包括以下信息中的至少一种：每个区域的长度、每个区域的宽度、经度方向上的区域数量、以及纬度方向上的区域 数量。
  19. 根据权利要求1至18中任一项所述的方法，其特征在于，所述位置信息承载于无线资源控制RRC信令中。
  20. 根据权利要求19所述的方法，其特征在于，所述位置信息与测量报告承载于相同或者不同的RRC信令中。
  21. 根据权利要求1至20中任一项所述的方法，其特征在于，所述位置信息包括：
    所述终端设备的当前位置；或者，
    所述当前位置与前一次发送所述位置信息时所处的位置之间的距离。
  22. 根据权利要求1至21中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备进行小区测量，得到测量报告；
    所述终端设备向所述网络设备发送所述测量报告，所述测量报告用于小区切换。
  23. 根据权利要求1至22中任一项所述的方法，其特征在于，
    所述网络设备为卫星，所述终端设备与所述网络设备之间的距离为：所述终端设备与所述卫星之间的距离；或者，
    所述网络设备为地面站，所述终端设备与所述网络设备之间的距离为：所述终端设备与卫星之间的距离，以及所述卫星与所述地面站之间的距离之和。
  24. 一种终端设备，其特征在于，包括：
    收发单元，用于基于以下信息中的至少一种，向网络设备发送所述终端设备的位置信息：定时器、计数器、所述终端设备的移动距离、以及所述终端设备所在的区域，其中，所述位置信息用于小区切换。
  25. 根据权利要求24所述的终端设备，其特征在于，所述收发单元具体用于：
    在满足预设条件时，向所述网络设备发送所述位置信息；
    其中，所述终端设备还包括处理单元，所述处理单元用于：
    在所述终端设备发送所述位置信息的同时，启动所述定时器；
    在所述定时器超时之前，控制所述收发单元不再向网络设备发送所述位置信息。
  26. 根据权利要求24所述的终端设备，其特征在于，所述终端设备还包括处理单元，所述处理单元用于：
    满足预设条件时，启动所述定时器；
    所述收发单元具体用于：在所述定时器超时时，向所述网络设备发送所述位置信息。
  27. 根据权利要求24所述的终端设备，其特征在于，所述终端设备还包括处理单元，所述处理单元用于：
    在满足预设条件时，启动所述定时器；
    在所述定时器的计时期间，所述终端设备每移动第一距离，将计数器的计数值加一并重启所述定时器；
    所述收发单元具体用于：在所述定时器的计时期间，若所述计数器的计数值达到预设值，向所述网络设备发送所述位置信息。
  28. 根据权利要求27所述的终端设备，其特征在于，所述处理单元还用于：
    在所述定时器超时时，重置所述计数器。
  29. 根据权利要求24所述的终端设备，其特征在于，所述终端设备还包括处理单元， 所述处理单元用于：
    在满足预设条件时，启动所述定时器；
    所述收发单元具体用于：在所述定时器的计时期间，若所述终端设备的移动距离大于第二距离，所述终端设备向所述网络设备发送所述位置信息。
  30. 根据权利要求24所述的终端设备，其特征在于，所述终端设备还包括处理单元，所述处理单元用于：
    在满足预设条件时，启动所述定时器；
    所述收发单元具体用于：若所述定时器超时时，所述终端设备的移动距离大于第四距离，则向所述网络设备发送所述位置信息。
  31. 根据权利要求25至30中任一项所述的终端设备，其特征在于，所述处理单元还用于：
    根据所述终端设备的移动速度，在计时时长不同的多个定时器中，选择与所述移动速度对应的所述定时器。
  32. 根据权利要求26至31中任一项所述的终端设备，其特征在于，所述处理单元还用于：
    在所述终端设备向所述网络设备发送所述位置信息时，重启所述定时器。
  33. 根据权利要求26至31中任一项所述的终端设备，其特征在于，所述处理单元还用于：
    在所终端设备向所述网络设备发送所述位置信息时，停止所述定时器。
  34. 根据权利要求25至32中任一项所述的终端设备，其特征在于，所述处理单元还用于：
    在所述终端设备接收到所述网络设备发送的用于指示所述终端设备停止所述定时器的指示信息时，停止所述定时器。
  35. 根据权利要求24所述的终端设备，其特征在于，所述终端设备还包括处理单元，所述处理单元用于：
    在满足预设条件时，启动所述计数器；
    所述终端设备每移动第五距离，将所述计数器的计数值加一；
    所述收发单元具体用于：在所述计数器的计数值达到预设值时，向所述网络设备发送所述位置信息。
  36. 根据权利要求25至35中任一项所述的终端设备，其特征在于，所述预设条件包括以下中的至少一种：
    所述终端设备接收到网络设备发送的用于指示所述终端设备发送位置信息的指示信息；
    所述终端设备进入连接态；
    发生所述网络设备配置的测量事件；
    触发小区测量的测量报告；
    所述终端设备的服务小区的信道质量低于第一阈值；
    所述终端设备的邻小区的信道质量高于第二阈值；
    所述终端设备每次发送所述位置信息。
  37. 根据权利要求24所述的终端设备，其特征在于，所述终端设备还包括处理单元，所述处理单元用于：
    判断当前位置与上一次发送所述位置信息时所处的位置之间的距离，是否大于第三距离；
    所述收发单元具体用于：在当前位置与上一次发送所述位置信息时所处的位置之间的距离大于所述第三距离时，向所述网络设备发送所述位置信息。
  38. 根据权利要求37所述的终端设备，其特征在于，所述处理单元还用于：
    根据其移动速度，在多个预设距离中，选择与所述移动速度对应的所述第三距离。
  39. 根据权利要求24所述的终端设备，其特征在于，所述收发单元具体用于：
    所述终端设备从第一区域移动至第二区域时，向所述网络设备发送所述终端设备的位置信息。
  40. 根据权利要求39所述的终端设备，其特征在于，
    所述第一区域和所述第二区域为同一小区内的不同区域；或者，
    所述第一区域和所述第二区域为不同小区所在的区域；或者，
    所述第一区域和所述第二区域为卫星的不同波束覆盖的区域。
  41. 根据权利要求39或40所述的终端设备，其特征在于，所述收发单元还用于：
    接收网络设备发送的区域信息，所述区域信息包括以下信息中的至少一种：每个区域的长度、每个区域的宽度、经度方向上的区域数量、以及纬度方向上的区域数量。
  42. 根据权利要求24至41中任一项所述的终端设备，其特征在于，所述位置信息承载于无线资源控制RRC信令中。
  43. 根据权利要求42所述的终端设备，其特征在于，所述位置信息与测量报告承载于相同或者不同的RRC信令中。
  44. 根据权利要求24至43中任一项所述的终端设备，其特征在于，所述位置信息包括：
    所述终端设备的当前位置；或者，
    所述当前位置与前一次发送所述位置信息时所处的位置之间的距离。
  45. 根据权利要求24至44中任一项所述的终端设备，其特征在于，所述处理单元还用于：
    进行小区测量，得到测量报告；
    所述收发单元还用于：向所述网络设备发送所述测量报告，所述测量报告用于小区切换。
  46. 根据权利要求24至45中任一项所述的终端设备，其特征在于，
    所述网络设备为卫星，所述终端设备与所述网络设备之间的距离为：所述终端设备与所述卫星之间的距离；或者，
    所述网络设备为地面站，所述终端设备与所述网络设备之间的距离为：所述终端设备与卫星之间的距离，以及所述卫星与所述地面站之间的距离之和。
  47. 一种通信设备，其特征在于，所述通信设备包括处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行权利要求1至23中任一项所述的方法。
  48. 一种芯片，其特征在于，所述芯片包括处理器，所述处理器用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行权利要求1至23中任一项所述的方法。
  49. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行权利要求1至23中任一项所述的方法。
  50. 一种计算机程序产品，其特征在于，包括计算机程序指令，所述计算机程序指令使得计算机执行权利要求1至23中任一项所述的方法。
  51. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行权利要求1至23中任一项所述的方法。
PCT/CN2019/109178 2019-09-29 2019-09-29 小区切换的方法和设备 WO2021056561A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980095130.9A CN113678475B (zh) 2019-09-29 2019-09-29 小区切换的方法和设备
PCT/CN2019/109178 WO2021056561A1 (zh) 2019-09-29 2019-09-29 小区切换的方法和设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/109178 WO2021056561A1 (zh) 2019-09-29 2019-09-29 小区切换的方法和设备

Publications (1)

Publication Number Publication Date
WO2021056561A1 true WO2021056561A1 (zh) 2021-04-01

Family

ID=75165358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/109178 WO2021056561A1 (zh) 2019-09-29 2019-09-29 小区切换的方法和设备

Country Status (2)

Country Link
CN (1) CN113678475B (zh)
WO (1) WO2021056561A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113796102A (zh) * 2021-07-26 2021-12-14 北京小米移动软件有限公司 非地面网络中上报终端设备位置信息的方法和装置
CN113972945A (zh) * 2021-09-22 2022-01-25 阿里巴巴达摩院(杭州)科技有限公司 切换方法、设备、存储介质和无线通信系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102547840A (zh) * 2012-01-20 2012-07-04 电信科学技术研究院 一种mdt测量结果的上报方法及装置
CN102892163A (zh) * 2011-07-20 2013-01-23 北京为邦远航无线技术有限公司 高速移动下地空宽带通信的切换方法及系统
US20160323032A1 (en) * 2015-05-01 2016-11-03 Qualcomm Incorporated Handoff for non-geosynchronous satellite communication
CN108737959A (zh) * 2018-05-25 2018-11-02 西安邮电大学 基于精密单点定位的5g超密集网络切换方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100705450B1 (ko) * 2005-12-07 2007-04-09 한국전자통신연구원 휴대 인터넷 시스템에서 유휴 상태 단말의 위치 정보업데이트 장치 및 방법
CN101345989A (zh) * 2007-07-13 2009-01-14 华为技术有限公司 发起位置更新的方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102892163A (zh) * 2011-07-20 2013-01-23 北京为邦远航无线技术有限公司 高速移动下地空宽带通信的切换方法及系统
CN102547840A (zh) * 2012-01-20 2012-07-04 电信科学技术研究院 一种mdt测量结果的上报方法及装置
US20160323032A1 (en) * 2015-05-01 2016-11-03 Qualcomm Incorporated Handoff for non-geosynchronous satellite communication
CN108737959A (zh) * 2018-05-25 2018-11-02 西安邮电大学 基于精密单点定位的5g超密集网络切换方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Connected mode mobility aspects for NTN GEO", 3GPP DRAFT; R2-1907158 MOBILITY FOR GEO NTN, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, Nevada, US; 20190513 - 20190517, 2 May 2019 (2019-05-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 9, XP051711449 *
ERICSSON: "Location reporting for NTN", 3GPP DRAFT; R2-1907164 LOCATION REPORTING FOR NTN, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, Nevada, US; 20190513 - 20190517, 2 May 2019 (2019-05-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051711455 *
SONY: "Location report in NTN", 3GPP DRAFT; R2-1907042, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, USA; 20190513 - 20190517, 2 May 2019 (2019-05-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051711339 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113796102A (zh) * 2021-07-26 2021-12-14 北京小米移动软件有限公司 非地面网络中上报终端设备位置信息的方法和装置
CN113972945A (zh) * 2021-09-22 2022-01-25 阿里巴巴达摩院(杭州)科技有限公司 切换方法、设备、存储介质和无线通信系统
CN113972945B (zh) * 2021-09-22 2024-04-30 杭州阿里云飞天信息技术有限公司 切换方法、设备、存储介质和无线通信系统

Also Published As

Publication number Publication date
CN113678475A (zh) 2021-11-19
CN113678475B (zh) 2024-02-02

Similar Documents

Publication Publication Date Title
WO2021051388A1 (zh) 小区切换的方法和设备
EP3503620B1 (en) Method, device and system for cell handover
US10064111B2 (en) Configuring a discard timer
WO2021082009A1 (zh) 小区测量的方法、终端设备和网络设备
US9497683B2 (en) Handover method and apparatus
CN112806063B (zh) 用于小区切换的方法及设备
WO2021159283A1 (zh) 非地面通信网络ntn切换方法、设备及存储介质
WO2021062729A1 (zh) 一种切换处理方法、通信设备、终端设备
CN113170367B (zh) 用于切换网络设备的方法和终端设备
WO2020164018A1 (zh) 用于小区切换的方法及设备
CN113597784B (zh) 用于切换网络设备的方法、终端设备和网络设备
US12010636B2 (en) Wireless communication method, terminal device, and network device
WO2019237763A1 (zh) 一种rlf的处理方法及装置、通信设备
WO2020154994A1 (zh) 小区切换方法、终端设备和网络设备
CN112738825A (zh) 上报测量信息的方法、配置终端设备的方法和设备
WO2020220321A1 (zh) 无线通信方法、终端设备和网络设备
WO2021056561A1 (zh) 小区切换的方法和设备
WO2020155120A1 (zh) 无线通信的方法和设备
US20240015634A1 (en) Method and apparatus for transmitting and receiving signal and communication system
WO2021168627A1 (zh) 一种传输控制方法、终端设备、网络设备
WO2021022430A1 (zh) 随机接入的方法和通信设备
CN114125975A (zh) 切换接入网设备的方法、终端设备和网络设备
CN113747532B (zh) 无线通信的方法、终端设备和网络设备
WO2020029275A1 (zh) 一种无线通信方法、终端设备和网络设备
WO2023093373A1 (zh) 一种用于建立连接的方法和通信装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19946445

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19946445

Country of ref document: EP

Kind code of ref document: A1