WO2022188088A1 - 重选小区的方法、装置、通信设备及存储介质 - Google Patents

重选小区的方法、装置、通信设备及存储介质 Download PDF

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Publication number
WO2022188088A1
WO2022188088A1 PCT/CN2021/080157 CN2021080157W WO2022188088A1 WO 2022188088 A1 WO2022188088 A1 WO 2022188088A1 CN 2021080157 W CN2021080157 W CN 2021080157W WO 2022188088 A1 WO2022188088 A1 WO 2022188088A1
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Prior art keywords
cell
terminal
source cell
distance
reselection
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PCT/CN2021/080157
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English (en)
French (fr)
Inventor
洪伟
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202180000731.4A priority Critical patent/CN115336322A/zh
Priority to PCT/CN2021/080157 priority patent/WO2022188088A1/zh
Priority to US18/281,550 priority patent/US20240163754A1/en
Publication of WO2022188088A1 publication Critical patent/WO2022188088A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/326—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by proximity to another entity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the present disclosure relates to the field of wireless communication technologies, but is not limited to the field of wireless communication technologies, and in particular, relates to a method, apparatus, communication device, and storage medium for reselection of a cell.
  • NTN Non-Terrestrial Network
  • the terminal performs measurements on neighboring cells according to the cell reselection process of the terrestrial network, makes decisions, and performs cell reselection and other processes, in the NTN scenario, due to the less obvious far and near field effects, in the cell center and cell edge.
  • the measured reference signal received power (RSRP, Reference Signal Receiving Power) does not change much. This will seriously affect the decision process of whether to perform cell reselection, thereby affecting the mobility performance of the terminal in the idle state.
  • the embodiments of the present disclosure disclose a method, an apparatus, a communication device, and a storage medium for reselection of a cell.
  • a method for reselection of a cell is provided, wherein the method is executed by a terminal, and the method includes:
  • the cell is a cell covered by a signal of a satellite.
  • the determining whether to perform cell reselection based on the location relationship between the terminal and the source cell includes:
  • the determining whether to perform cell reselection based on the location relationship between the terminal and the reference location of the source cell includes:
  • the method further includes:
  • the threshold range is determined according to the size of the signal coverage area of the satellite.
  • the determining to perform cell reselection in response to the distance between the terminal and the reference location being outside a threshold range includes:
  • the second distance is the distance between the terminal and the reference position at a second moment; the second moment is earlier than the first moment.
  • the method further includes:
  • the position of the reference position is determined according to the ephemeris information.
  • the reference position is a position determined according to the center position of the source cell; wherein the center position of the source cell is determined according to the ephemeris information.
  • the method further includes:
  • the cell configuration information of the target cell for cell reselection is received.
  • the cell configuration information includes one or more of the following:
  • the measurement time of the synchronization signal block configures the SMTC information
  • an apparatus for reselection of a cell wherein, applied to a terminal, the apparatus includes a determining module; wherein,
  • the determining module is configured to: determine whether to perform the operation of cell reselection based on the positional relationship between the terminal and the source cell; wherein, the cell is a cell covered by a signal of a satellite.
  • a communication device comprising:
  • a memory for storing the processor-executable instructions
  • the processor is configured to: when executing the executable instructions, implement the method described in any embodiment of the present disclosure.
  • a computer storage medium stores a computer-executable program, and when the executable program is executed by a processor, implements the method described in any embodiment of the present disclosure.
  • the cell is a cell covered by a signal of a satellite.
  • whether to perform cell reselection is determined based on the location relationship between the terminal and the source cell, it is only necessary to obtain the location relationship between the terminal and the source cell to determine whether to perform cell reselection.
  • the handover will be more reliable. In this way, the mobility performance of the terminal can be improved.
  • FIG. 1 is a schematic structural diagram of a wireless communication system.
  • Fig. 2 is a schematic diagram of a scenario of satellite communication according to an exemplary embodiment.
  • Fig. 3 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 4 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 5 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 6 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 7 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 8 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 9 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 10 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 11 is a schematic flowchart of a method for reselection of a cell according to an exemplary embodiment.
  • Fig. 12 is a schematic diagram of an apparatus for reselection of a cell according to an exemplary embodiment.
  • FIG. 13 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • Fig. 14 is a block diagram of a base station according to an exemplary embodiment.
  • first, second, third, etc. may be used in embodiments of the present disclosure to describe various pieces of information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • the word "if” as used herein can be interpreted as "at the time of” or "when” or "in response to determining.”
  • the terms “greater than” or “less than” are used herein when characterizing the relationship of size. However, those skilled in the art can understand that the term “greater than” also covers the meaning of “greater than or equal to”, and “less than” also covers the meaning of "less than or equal to”.
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on a mobile communication technology, and the wireless communication system may include: several user equipments 110 and several base stations 120 .
  • the user equipment 110 may be a device that provides voice and/or data connectivity to the user.
  • User equipment 110 may communicate with one or more core networks via a Radio Access Network (RAN), and user equipment 110 may be IoT user equipment such as sensor devices, mobile phones, and computers with IoT user equipment For example, it may be a stationary, portable, pocket-sized, hand-held, computer-built, or vehicle-mounted device.
  • RAN Radio Access Network
  • IoT user equipment such as sensor devices, mobile phones, and computers with IoT user equipment
  • it may be a stationary, portable, pocket-sized, hand-held, computer-built, or vehicle-mounted device.
  • station Ses, STA
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • mobile station mobile station
  • remote station remote station
  • access terminal remote user equipment
  • user terminal user terminal
  • user agent user device
  • user equipment or user equipment.
  • the user equipment 110 may also be a device of an unmanned aerial vehicle.
  • the user equipment 110 may also be an in-vehicle device, for example, a trip computer with a wireless communication function, or a wireless user equipment connected to an external trip computer.
  • the user equipment 110 may also be a roadside device, for example, may be a street light, a signal light, or other roadside devices with a wireless communication function.
  • the base station 120 may be a network-side device in a wireless communication system.
  • the wireless communication system may be a fourth generation mobile communication (the 4th generation mobile communication, 4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; or, the wireless communication system may also be a 5G system, Also known as New Radio System or 5G NR System.
  • the wireless communication system may also be a next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, a new generation of radio access network).
  • the base station 120 may be an evolved base station (eNB) used in the 4G system.
  • the base station 120 may also be a base station (gNB) that adopts a centralized distributed architecture in a 5G system.
  • eNB evolved base station
  • gNB base station
  • the base station 120 adopts a centralized distributed architecture it usually includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU).
  • the centralized unit is provided with a protocol stack of a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control Protocol (Radio Link Control, RLC) layer, and a Media Access Control (Media Access Control, MAC) layer; distribution A physical (Physical, PHY) layer protocol stack is set in the unit, and the specific implementation manner of the base station 120 is not limited in this embodiment of the present disclosure.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control Protocol
  • MAC Media Access Control
  • distribution A physical (Physical, PHY) layer protocol stack is set in the unit, and the specific implementation manner of the base station 120 is not limited in this embodiment of the present disclosure.
  • a wireless connection can be established between the base station 120 and the user equipment 110 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, such as
  • the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a 5G next-generation mobile communication network technology standard.
  • an E2E (End to End, end-to-end) connection may also be established between the user equipments 110 .
  • V2V vehicle to vehicle, vehicle-to-vehicle
  • V2I vehicle to Infrastructure, vehicle-to-roadside equipment
  • V2P vehicle to pedestrian, vehicle-to-person communication in vehicle-to-everything (V2X) communication etc. scene.
  • the above-mentioned user equipment may be regarded as the terminal equipment of the following embodiments.
  • the above wireless communication system may further include a network management device 130 .
  • the network management device 130 may be a core network device in a wireless communication system, for example, the network management device 130 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME). Alternatively, the network management device may also be other core network devices, such as a serving gateway (Serving GateWay, SGW), a public data network gateway (Public Data Network GateWay, PGW), a policy and charging rules functional unit (Policy and Charging Rules) Function, PCRF) or home subscriber server (Home Subscriber Server, HSS), etc.
  • the implementation form of the network management device 130 is not limited in this embodiment of the present disclosure.
  • the embodiments of the present disclosure enumerate multiple implementation manners to clearly illustrate the technical solutions of the embodiments of the present disclosure.
  • the multiple embodiments provided by the embodiments of the present disclosure may be executed independently, or may be executed together with the methods of other embodiments in the embodiments of the present disclosure, or may be executed alone or in combination and then executed together with some methods in other related technologies; this is not limited by the embodiments of the present disclosure.
  • Satellite communication refers to the communication carried out by radio communication equipment on the ground using satellites as relays.
  • the satellite communication system consists of a satellite part and a ground part.
  • the characteristics of satellite communication are: the communication range is large; as long as the radio waves emitted by the satellite cover the range, communication between any two points can be carried out; it is not easily affected by land disasters and has high reliability.
  • satellite communication has the following characteristics: 1. Extendable coverage: For areas that cannot be covered by cellular communication systems or have high coverage costs, such as oceans, deserts and remote mountainous areas, satellite communication can be used to solve the problem. communication problems. 2. Emergency communication: Under the condition that the cellular communication infrastructure is unavailable due to extreme conditions such as disasters (such as earthquakes, etc.), satellite communication can be used to quickly establish a communication connection. 3. Provide industry applications: For example, for delay-sensitive services of long-distance transmission, the delay of service transmission can be reduced by means of satellite communication.
  • Satellite communication can be communication between radio communication stations on the ground using communication satellites as relay stations to forward radio waves.
  • the communication function of the communication satellite includes at least one of the following: receiving a signal, changing the frequency of the signal, amplifying the signal, retransmitting the signal, and positioning.
  • the wireless communication network may be a network that integrates a mobile communication network and a satellite communication network.
  • the mobile communication network includes a base station 21, and the satellite communication network includes a communication satellite 22 and a gateway station 23 of the communication satellite.
  • the base station 21 may establish a wireless communication connection with the gateway station 23 .
  • the terminal 24 can establish a wireless communication connection with the base station 21 .
  • Terminal 24 may establish a wireless communication connection with satellite 22 .
  • a method for reselection of a cell is provided in this embodiment, wherein the method is executed by a terminal, and the method includes:
  • Step 31 based on the location relationship between the terminal and the source cell, determine whether to perform an operation of cell reselection
  • the cell is a cell covered by a signal of a satellite.
  • the terminal may be, but is not limited to, a mobile phone, a wearable device, a vehicle-mounted terminal, a roadside unit (RSU, Road Side Unit), a smart home terminal, an industrial sensing device, and other terminals.
  • a mobile phone a wearable device
  • vehicle-mounted terminal a vehicle-mounted terminal
  • RSU Road Side Unit
  • smart home terminal an industrial sensing device, and other terminals.
  • the terminal communicates with the base station via satellite.
  • the base station may be an access device for the terminal to access the network.
  • the base station may be various types of base stations, for example, a base station of a third generation mobile communication (3G) network, a base station of a fourth generation mobile communication (4G) network, a base station of a fifth generation mobile communication (5G) network, or other Evolved base station.
  • the satellite may be a Low Earth Orbiting (LEO, Low Earth Orbiting). It should be noted that, with the evolution of the satellite wireless communication network, the satellite may also be a medium orbit satellite (MEO, Medium Earth Orbiting) or the like.
  • LEO Low Earth Orbiting
  • MEO Medium Earth Orbiting
  • the satellite may be deployed in an airspace where the density of ground base stations is less than the density threshold and the channel quality of the wireless communication environment is less than the quality threshold.
  • the density of ground base stations is less than the density threshold and the channel quality of the wireless communication environment is less than the quality threshold.
  • the quality threshold For example, remote mountainous and/or oceanic airspace.
  • the satellite includes satellite 1 and satellite 2; the cell of satellite 1 is cell 1, which is the source cell of the terminal; the cell of satellite 2 is cell 2, and it is assumed that cell 2 is the terminal for cell reselection the target area.
  • the satellite moves relative to the terminal.
  • the terminal moves relatively to the edge of cell 1, it needs to perform cell reselection, it needs to reselect to cell 2, and access the cell 2 for camping.
  • the cell covered by the satellite signal is an NTN cell
  • the source cell to which the terminal is currently connected may be the NTN source cell.
  • the coverage area of the NTN source cell may be the area of the ground area that can be covered by the signal of the NTN source cell.
  • one satellite may correspond to at least one NTN cell.
  • the satellites may be flying base stations.
  • the base station may be an access device for the terminal to access the NTN.
  • the cells of the satellite follow the movement of the satellite.
  • the terminal remains stationary relative to the ground and the NTN source cell moves along a fixed trajectory relative to the ground.
  • the terminal moves relative to the ground and the NTN source cell moves along a fixed trajectory relative to the ground.
  • the terminal and the satellite may move in the opposite direction or in the same direction.
  • each source cell corresponds to a reference location.
  • the reference location can be used to determine the location of the source cell.
  • the reference position may be determined according to the center position of the source cell.
  • the reference location may be the central location of the source cell.
  • whether to perform cell reselection is determined based on the positional relationship between the reference position of the terminal and the source cell.
  • the location relationship between the terminal and the source cell may be a distance relationship and/or an angle relationship between the terminal and the source cell.
  • based on the relationship between the coordinate position of the terminal and the coordinate position of the source cell it is determined whether to perform the operation of cell reselection.
  • the terminal is a terminal that supports Global Navigation Satellite System (GNSS, Global Navigation Satellite System) positioning.
  • GNSS Global Navigation Satellite System
  • the terminal periodically obtains the coordinate position of the terminal through GNSS. In this way, the location information of the terminal can be updated in real time.
  • GNSS Global Navigation Satellite System
  • the reference position of the source cell is different (because the satellite moves, the source cell moves with the satellite, so the reference position of the source cell also moves with the satellite) and the reference position relative to the source cell remains unchanged.
  • the terminal may determine the reference position according to the received ephemeris information; based on the positional relationship between the terminal and the reference position of the source cell, determine whether to perform the operation of cell reselection.
  • the terminal may receive the ephemeris information sent by the base station in real time.
  • the ephemeris information may be information associated with the position and/or motion state of the satellite.
  • the parameter values of the information contained in the ephemeris information may be different.
  • the location information of the satellites may be different.
  • the location information may be location coordinates.
  • the ephemeris information includes at least one of the following information: satellite running track information, satellite position information, satellite movement speed information, and satellite running orbit altitude information.
  • the terminal may determine the reference position of the source cell according to the ephemeris information.
  • the terminal acquires ephemeris information through a system message broadcast by the source cell.
  • the reference position is the center position of the source cell
  • P 1 is the current real-time position coordinate of the terminal
  • P 2 is the center position coordinate of the source cell calculated by the terminal in real time according to the acquired ephemeris information.
  • the terminal when the distance ⁇ D ⁇ D Thres between the terminal and the center of the source cell, the terminal performs cell reselection; otherwise, does not perform cell reselection; where D Thres is a threshold value indicated by the threshold range.
  • the terminal executes Cell reselection; otherwise, do not perform cell reselection; wherein, D Thres is the threshold value indicated by the threshold range; the second moment is prior to the first moment. In this way, the frequent cell reselection caused by the distance between the terminal and the center of the source cell can be reduced, and the terminal can reliably perform cell reselection.
  • the operation of determining whether to perform cell reselection may be based on the distance and/or angle between the terminal and the reference location of the source cell.
  • the operation of performing cell reselection is determined according to the average value of the distance between the terminal and the reference location within the first predetermined time period.
  • the distance between the terminal and the reference position can be reduced Frequent cell reselection caused by repeated changes, the terminal can reliably perform cell reselection.
  • the second predetermined time period is determined according to the channel quality of the transmitted data. In one embodiment, the second predetermined time period is determined to be less than the time period threshold in response to the channel quality of the transmitted data being greater than the channel quality threshold; the second predetermined time period is determined to be greater than the time period threshold in response to the channel quality of the transmitted data being less than the quality threshold . As such, the second predetermined period of time may be adapted to the channel quality of the transmitted data.
  • the threshold range is determined according to the signal coverage of the source cell. In one embodiment, the threshold range is greater than the first value in response to the signal coverage of the source cell being greater than the range threshold; the threshold range is less than the first value in response to the signal coverage of the source cell being less than the range threshold. In this way, the threshold range can be adaptively adjusted according to the signal coverage of the source cell.
  • the information on the signal coverage may include: the radius, diameter and/or area of the NTN source cell. Here, the information of the signal coverage can be obtained from the ephemeris information.
  • the cell is a cell covered by a signal of a satellite.
  • the cell since whether to perform cell reselection is determined based on the location relationship between the terminal and the source cell, it is only necessary to obtain the location relationship between the terminal and the source cell to determine whether to perform cell reselection. If the cell reselection is performed based on the received power of the reference signal, the handover will be more reliable. In this way, the mobility performance of the terminal can be improved.
  • a method for reselection of a cell is provided in this embodiment, wherein the method is executed by a terminal, and the method includes:
  • Step 51 Based on the positional relationship between the terminal and the reference position of the source cell, determine whether to perform the operation of cell reselection; wherein the reference position is unchanged relative to the position of the source cell.
  • whether to perform cell reselection may be determined based on the distance relationship between the terminal and the reference location of the source cell.
  • the operation of determining whether to perform cell reselection may be based on the distance and/or angle between the terminal and the reference location of the source cell.
  • it may be based on the distance relationship and the reference angle relationship between the terminal and the reference positions of the source cell to determine whether to perform the cell reselection operation.
  • the terminal in response to the average distance between the terminal and the reference location being outside the distance threshold range and the average reference angle between the terminal and the reference location of the source cell being outside the angle threshold range during the first time period, determine to perform cell reselection; or, in response to the average value of the distance between the terminal and the reference location being within the distance threshold and the average value of the reference angle between the terminal and the reference location of the source cell being within the angular threshold range, determining not to perform the cell reselection. In this way, since the distance average value and the angle average value can more accurately reflect the relative positional relationship between the terminal and the reference position, the terminal can reliably perform cell reselection.
  • determining to perform the cell reset after the second predetermined period of time select in response to the distance between the terminal and the reference location being outside the threshold range and the reference angle between the terminal and the reference location of the source cell being outside the angular threshold range, determining to perform the cell reset after the second predetermined period of time select.
  • the cell reselection since the distance between the terminal and the reference position is outside the threshold range and the reference angle between the terminal and the reference position of the source cell is outside the angle threshold range, the cell reselection is not performed immediately, but at the second predetermined time It is determined to perform cell reselection after the segment, which can reduce frequent cell reselection caused by repeated changes in the distance and angle between the terminal and the reference position, and the terminal can reliably perform cell reselection.
  • each source cell corresponds to a reference location.
  • the reference location can be used to determine the location of the source cell.
  • the reference position may be determined according to the center position of the source cell.
  • the reference location may be the center location of the source cell.
  • the signal coverage area of the source cell is a circle, and the center position may be the center of the circle.
  • the terminal may determine the reference position according to the received ephemeris information.
  • the terminal may receive the ephemeris information sent by the base station in real time.
  • the ephemeris information may be information associated with the position and/or motion state of the satellite.
  • the parameter values of the information contained in the ephemeris information may be different.
  • the location information of the satellites may be different, and the cell locations of the satellites may also be different.
  • the location information may be location coordinates.
  • the ephemeris information includes at least one of the following information: satellite running track information, satellite position information, satellite movement speed information, and satellite running orbit altitude information.
  • the terminal can determine the reference location of the source cell according to the ephemeris information.
  • the reference position is a position determined by a satellite-based cell as a reference. Therefore, when the satellite cell moves, the reference position relative to the satellite cell's position will not change, and the reference position will follow the satellite's position. Cell movement.
  • a method for reselection of a cell is provided in this embodiment, wherein the method is executed by a terminal, and the method includes:
  • Step 61 In response to the distance between the terminal and the reference location being outside the threshold range, determine to perform cell reselection; or, in response to the distance between the terminal and the reference location being within the threshold range, determine not to perform cell reselection.
  • the reference position is the center position of the source cell
  • P 1 is the current real-time position coordinate of the terminal
  • P 2 is the center position coordinate of the source cell calculated by the terminal in real time according to the obtained ephemeris information.
  • the terminal when the distance ⁇ D ⁇ D Thres between the terminal and the center of the source cell, the terminal performs cell reselection; otherwise, does not perform cell reselection; where D Thres is a threshold value indicated by the threshold range.
  • the terminal executes Cell reselection; otherwise, do not perform cell reselection; wherein, D Thres is the threshold value indicated by the threshold range; the second moment is prior to the first moment. In this way, the frequent cell reselection caused by the distance between the terminal and the center of the source cell can be reduced, and the terminal can reliably perform cell reselection.
  • whether to perform the cell reselection operation may be determined according to the average distance between the terminal and the reference location of the source cell within the first predetermined time period.
  • the distance between the terminal and the reference position can be reduced Frequent cell reselection caused by repeated changes, the terminal can reliably perform cell reselection.
  • the threshold range is determined according to the signal coverage of the source cell. In one embodiment, the threshold range is greater than the first value in response to the signal coverage of the source cell being greater than the range threshold; the threshold range is less than the first value in response to the signal coverage of the source cell being less than the range threshold. In this way, the threshold range can be adaptively adjusted according to the signal coverage of the source cell.
  • the information on the signal coverage may include: information on the radius, diameter and/or area of the NTN source cell. Here, the information of the signal coverage can be obtained from the ephemeris information.
  • a method for reselection of a cell is provided in this embodiment, wherein the method is executed by a terminal, and the method includes:
  • Step 71 Determine the threshold range according to the size of the signal coverage area of the source cell.
  • the signal coverage area of the source cell may be a ground area that can be covered by the signal of the NTN source cell.
  • the size of the signal coverage area of the source cell is determined according to the transmit power of the satellite of the source cell.
  • the signal coverage area of the source cell in response to the transmission power of the satellite of the source cell being greater than the power threshold, it is determined that the size of the signal coverage area of the source cell is greater than the second value; in response to the transmission power of the satellite of the source cell being smaller than the power threshold, it is determined that the signal of the source cell is larger than the second value.
  • the coverage area size is smaller than the second value.
  • the threshold range is determined according to the signal coverage of the source cell. In one embodiment, the threshold range is greater than the first value in response to the signal coverage of the source cell being greater than the range threshold; the threshold range is less than the first value in response to the signal coverage of the source cell being less than the range threshold. In this way, the threshold range can be adaptively adjusted according to the signal coverage of the source cell.
  • the information of the signal coverage area may include: the radius, diameter and/or area of the source cell. In one embodiment, the information on the signal coverage may include: the radius, diameter and/or area of the NTN source cell.
  • the information of the signal coverage can be obtained from the ephemeris information.
  • a method for reselection of a cell is provided in this embodiment, wherein the method is executed by a terminal, and the method includes:
  • Step 81 in response to the first distance between the terminal and the reference position at the first moment being outside the threshold range and the first distance being greater than the second distance, determine to perform cell reselection;
  • the second distance is the distance between the terminal and the reference position at the second moment; the second moment is earlier than the first moment.
  • the first distance is determined to be greater than the second distance in response to the terminal moving in the opposite direction to the reference position; the first distance is determined to be smaller than the second distance in response to the terminal moving in the same direction as the reference position.
  • the distance between the terminal and the reference position is the second distance; at the first moment, the distance between the terminal and the reference position is the first distance; in response to the first distance being within the threshold range and the first distance is greater than the second distance, it is determined to perform cell reselection.
  • the first distance is outside the threshold range, which may be that the first distance is greater than a threshold value indicated by the threshold range. In one embodiment, it is determined to perform cell reselection in response to the first distance being greater than a threshold value indicated by the threshold range and the first distance being greater than the second distance.
  • the second moment in the time domain is before the first moment.
  • the first moment may be the current moment.
  • the second time may be the time before the first time when the terminal detects the positional relationship between the terminal and the reference position.
  • a method for reselection of a cell is provided in this embodiment, wherein the method is executed by a terminal, and the method includes:
  • Step 91 receiving the ephemeris information sent by the base station
  • the position of the reference position is determined.
  • the reference position of the source cell is different (because the satellite is moving, the source cell moves with the satellite, so the reference position of the source cell also moves with the satellite) and the reference position relative to the source cell remains unchanged.
  • the terminal may periodically receive ephemeris information sent by the base station.
  • the ephemeris information may be information associated with the position and/or motion state of the satellite.
  • the parameter values of the information contained in the ephemeris information may be different.
  • the location information of the satellites may be different.
  • the location information may be location coordinates.
  • the ephemeris information includes at least one of the following information: satellite running track information, satellite position information, satellite movement speed information, and satellite running orbit altitude information.
  • the terminal can determine the reference location of the source cell according to the ephemeris information.
  • the reference position is a position determined according to the center position of the source cell; wherein the center position of the source cell is determined according to ephemeris information.
  • the reference position can be determined based on the position a and h.
  • the reference position is the center position of the cell.
  • the reference position may also be another position determined according to the center position of the source cell. For example, a position that is due north of the center position and a distance from the center position can be determined as the reference position.
  • the ephemeris information sent by the base station is received.
  • an RRC message carrying ephemeris information is received.
  • a random access message carrying ephemeris information is received.
  • the random access message may include a second random access message and a fourth random access message.
  • the terminal acquires ephemeris information through a system message broadcast by the source cell.
  • this embodiment provides a method for reselection of a cell, wherein the method is executed by a terminal, and the method includes:
  • Step 111 Receive cell configuration information of a target cell for cell reselection.
  • the cell configuration information includes one or more of the following:
  • the measurement time of the synchronization signal block configures the SMTC information
  • the terminal receives the cell configuration information of the target cell for cell reselection through a system message.
  • the terminal may use the cell configuration information to perform data transmission in the target cell.
  • an embodiment of the present disclosure provides an apparatus for reselection of a cell, wherein, applied to a terminal, the apparatus includes a determination module 121; wherein,
  • the determining module 121 is configured to: determine whether to perform the operation of cell reselection based on the positional relationship between the terminal and the source cell; wherein, the cell is a cell covered by a signal of a satellite.
  • Embodiments of the present disclosure provide a communication device, the communication device includes:
  • memory for storing processor-executable instructions
  • the processor is configured to, when executing the executable instructions, implement the method applied to any embodiment of the present disclosure.
  • the processor may include various types of storage media, which are non-transitory computer storage media that can continue to memorize and store information on the communication device after the power is turned off.
  • the processor can be connected to the memory through a bus or the like, and is used to read the executable program stored on the memory.
  • An embodiment of the present disclosure further provides a computer storage medium, wherein the computer storage medium stores a computer-executable program, and when the executable program is executed by a processor, the method of any embodiment of the present disclosure is implemented.
  • an embodiment of the present disclosure provides a structure of a terminal.
  • this embodiment provides a terminal 800, which may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. .
  • the terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and communication component 816.
  • the processing component 802 generally controls the overall operations of the terminal 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 802 can include one or more processors 820 to execute instructions to perform all or some of the steps of the methods described above.
  • processing component 802 may include one or more modules that facilitate interaction between processing component 802 and other components.
  • processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.
  • Memory 804 is configured to store various types of data to support operation at device 800 . Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phonebook data, messages, pictures, videos, and the like. Memory 804 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • Power supply assembly 806 provides power to various components of terminal 800 .
  • Power supply components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800 .
  • Multimedia component 808 includes screens that provide an output interface between terminal 800 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. A touch sensor can sense not only the boundaries of a touch or swipe action, but also the duration and pressure associated with the touch or swipe action.
  • the multimedia component 808 includes a front-facing camera and/or a rear-facing camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.
  • Audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC) that is configured to receive external audio signals when the terminal 800 is in an operating mode, such as a calling mode, a recording mode, and a voice recognition mode.
  • the received audio signal may be further stored in memory 804 or transmitted via communication component 816 .
  • audio component 810 also includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.
  • Sensor assembly 814 includes one or more sensors for providing various aspects of the status assessment of terminal 800 .
  • the sensor component 814 can detect the open/closed state of the device 800, the relative positioning of components, such as the display and keypad of the terminal 800, the sensor component 814 can also detect the position change of the terminal 800 or a component of the terminal 800, the user The presence or absence of contact with the terminal 800, the orientation or acceleration/deceleration of the terminal 800 and the temperature change of the terminal 800.
  • Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 816 is configured to facilitate wired or wireless communication between terminal 800 and other devices.
  • the terminal 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • terminal 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component implementation is used to perform the above method.
  • non-transitory computer-readable storage medium including instructions, such as a memory 804 including instructions, which are executable by the processor 820 of the terminal 800 to perform the above method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • an embodiment of the present disclosure shows a structure of a base station.
  • the base station 900 may be provided as a network-side device.
  • base station 900 includes a processing component 922, which further includes one or more processors, and a memory resource, represented by memory 932, for storing instructions executable by processing component 922, such as application programs.
  • An application program stored in memory 932 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 922 is configured to execute instructions to perform any of the aforementioned methods applied to the base station.
  • the base station 900 may also include a power supply assembly 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to a network, and an input output (I/O) interface 958.
  • Base station 900 may operate based on an operating system stored in memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

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Abstract

本公开实施例提供了一种重选小区的方法，其中，该方法被终端执行，该方法，包括：基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；其中，小区，为卫星的信号覆盖的小区。

Description

重选小区的方法、装置、通信设备及存储介质 技术领域
本公开涉及无线通信技术领域但不限于无线通信技术领域，尤其涉及一种重选小区的方法、装置、通信设备及存储介质。
背景技术
在非地面网络(NTN，Non-Terrestrial Network)场景中，由于卫星相对地面位置会发生快速变化，在一些场景下，终端被同一颗卫星的信号连续覆盖的时间只有几分钟至十几分钟。因此，终端需要不断地进行小区重选。
相关技术中，如果终端根据地面网络的小区重选流程对邻小区执行测量，进行判决和执行小区重选等流程，在NTN场景下，由于不太明显的远近场效应，在小区中心和小区边缘测量的参考信号接收功率(RSRP，Reference Signal Receiving Power)值变化不大。这样会严重影响是否执行小区重选的判决过程，从而影响终端在空闲态下的移动性性能。
发明内容
本公开实施例公开了一种重选小区的方法、装置、通信设备及存储介质。
根据本公开实施例的第一方面，提供一种重选小区的方法，其中，所述方法被终端执行，所述方法，包括：
基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；
其中，所述小区，为卫星的信号覆盖的小区。
在一个实施例中，所述基于终端和源小区之间的位置关系，确定是否执行小区重选的操作，包括：
基于所述终端和所述源小区的参考位置之间的位置关系，确定是否执行小区重选的操作；
其中，所述参考位置相对所述源小区的位置不变。
在一个实施例中，所述基于所述终端和所述源小区的参考位置之间的位置关系，确定是否执行小区重选的操作，包括：
响应于所述终端和所述参考位置之间的距离在阈值范围外，确定执行小区重选；
或者，
响应于所述终端和所述参考位置之间的距离在阈值范围内，确定不执行小区重选。
在一个实施例中，所述方法，还包括：
根据所述卫星的信号覆盖区域大小，确定所述阈值范围。
在一个实施例中，所述响应于所述终端和所述参考位置之间的距离在阈值范围外，确定执行小区重选，包括：
响应于在第一时刻的所述终端和所述参考位置之间的第一距离在阈值范围外且所述第一距离大于第二距离，确定执行小区重选；
其中，所述第二距离，为在第二时刻的所述终端和所述参考位置之间的距离；所述第二时刻先于所述第一时刻。
在一个实施例中，所述方法，还包括：
接收基站发送的星历信息；
根据所述星历信息，确定所述参考位置的位置。
在一个实施例中，所述参考位置，为根据所述源小区的中心位置确定的位置；其中，所述源小区的中心位置是根据所述星历信息确定的。
在一个实施例中，所述方法，还包括：
接收小区重选的目标小区的小区配置信息。
在一个实施例中，所述小区配置信息，包括以下一种或多种：
目标小区的频点信息；
小区标识ID信息；
同步信号块的测量时间配置SMTC信息；
子载波间隔信息。
根据本公开实施例的第二方面，提供一种重选小区的装置，其中，应用于终端，所述装置，包括确定模块；其中，
所述确定模块，被配置为：基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；其中，所述小区，为卫星的信号覆盖的小区。
根据本公开实施例的第三方面，提供一种通信设备，所述通信设备，包括：
处理器；
用于存储所述处理器可执行指令的存储器；
其中，所述处理器被配置为：用于运行所述可执行指令时，实现本公开任意实施例所述的方法。
根据本公开实施例的第四方面，提供一种计算机存储介质，所述计算机存储介质存储有计算机可执行程序，所述可执行程序被处理器执行时实现本公开任意实施例所述的方法。
在本公开实施例中，基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；其中，所述小区，为卫星的信号覆盖的小区。这里，由于是基于终端和源小区之间的位置关系确定是否执行小区重选的操作，因此，只需要获取终端和源小区之间的位置关系，就可以确定是否执行小区重选的操作。相较于终端需要基于参考信号接收功率的方式进行小区重选的，切换会更加可靠，如此，可以提升终端的移动性性能。
附图说明
图1是一种无线通信系统的结构示意图。
图2是根据一示例性实施例示出的一种卫星通信的场景示意图。
图3是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图4是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图5是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图6是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图7是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图8是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图9是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图10是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图11是根据一示例性实施例示出的一种重选小区的方法的流程示意图。
图12是根据一示例性实施例示出的一种重选小区的装置的示意图。
图13是根据一示例性实施例示出的一种终端的结构示意图。
图14是根据一示例性实施例示出的一种基站的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
出于简洁和便于理解的目的，本文在表征大小关系时，所使用的术语为“大于”或“小于”。但对于本领域技术人员来说，可以理解：术语“大于”也涵盖了“大于等于”的含义，“小于”也涵盖了“小于等于”的含义。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统是基于移动通信技术的通信系统，该无线通信系统可以包括：若干个用户设备110以及若干个基站120。
其中，用户设备110可以是指向用户提供语音和/或数据连通性的设备。用户设备110可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，用户设备110可以是物联网用户设备，如传感器设备、移动电话和具有物联网用户设备的计算机，例如，可以是固定式、便携式、袖 珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程用户设备(remote terminal)、接入用户设备(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户设备(user equipment)。或者，用户设备110也可以是无人飞行器的设备。或者，用户设备110也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线用户设备。或者，用户设备110也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
基站120可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通信系统也可以是5G系统，又称新空口系统或5G NR系统。或者，该无线通信系统也可以是5G系统的再下一代系统。其中，5G系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。
其中，基站120可以是4G系统中采用的演进型基站(eNB)。或者，基站120也可以是5G系统中采用集中分布式架构的基站(gNB)。当基站120采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对基站120的具体实现方式不加以限定。
基站120和用户设备110之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
在一些实施例中，用户设备110之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(vehicle to everything，V2X)中的V2V(vehicle to vehicle，车对车)通信、V2I(vehicle to Infrastructure，车对路边设备)通信和V2P(vehicle to pedestrian，车对人)通信等场景。
这里，上述用户设备可认为是下面实施例的终端设备。
在一些实施例中，上述无线通信系统还可以包含网络管理设备130。
若干个基站120分别与网络管理设备130相连。其中，网络管理设备130可以是无线通信系统中的核心网设备，比如，该网络管理设备130可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体(Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving GateWay，SGW)、公用数据网网关(Public Data Network GateWay，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户服务器(Home Subscriber Server，HSS)等。对于网络管理设备130的实现形态，本公开实施例不做限定。
为了便于本领域内技术人员理解，本公开实施例列举了多个实施方式以对本公开实施例的技术方案 进行清晰地说明。当然，本领域内技术人员可以理解，本公开实施例提供的多个实施例，可以被单独执行，也可以与本公开实施例中其他实施例的方法结合后一起被执行，还可以单独或结合后与其他相关技术中的一些方法一起被执行；本公开实施例并不对此作出限定。
为了更好地理解本公开任一个实施例所描述的技术方案，首先，对卫星通信的相关应用场景进行说明：
在无线通信技术中，卫星通信被认为是未来无线通信技术发展的一个重要方面。卫星通信是指地面上的无线电通信设备利用卫星作为中继而进行的通信。卫星通信系统由卫星部分和地面部分组成。卫星通信的特点是：通信范围大；只要在卫星发射的电波所覆盖的范围内，任何两点之间都可进行通信；不易受陆地灾害的影响，可靠性高。
卫星通信作为地面的通信系统的补充，具有如下特点：1、可以延伸覆盖：对于蜂窝通信系统无法覆盖或是覆盖成本较高的地区，如海洋、沙漠和偏远山区等，可以通过卫星通信来解决通信的问题。2、应急通信：在发生灾难(如，地震等)的极端情况导致蜂窝通信的基础设施不可用的条件下，使用卫星通信可以快速的建立通信连接。3、提供行业应用：比如对于长距离传输的时延敏感业务，可以通过卫星通信的方式来降低业务传输的时延。
卫星通信可以是地面上的无线电通信站之间利用通信卫星作为中继站转发无线电波进行的通信。通信卫星的通信功能包括以下至少之一：接收信号、改变信号的频率、放大信号、转发信号和定位。
在一个实施例中，请参见图2，无线通信网络可以是融合移动通信网络和卫星通信网络的网络。其中，移动通信网络包括基站21，卫星通信网络包括通信卫星22和该通信卫星的信关站23。
在一个实施例中，基站21可以和信关站23建立无线通信连接。终端24可以和基站21建立无线通信连接。终端24可以和卫星22建立无线通信连接。
如图3所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤31、基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；
其中，小区，为卫星的信号覆盖的小区。
这里，终端可以是但不限于是手机、可穿戴设备、车载终端、路侧单元(RSU，Road Side Unit)、智能家居终端和工业用传感设备等终端。
这里，终端通过卫星与基站进行通信。
这里，基站可以是终端接入网络的接入设备。这里，基站可以为各种类型的基站，例如，第三代移动通信(3G)网络的基站、第四代移动通信(4G)网络的基站、第五代移动通信(5G)网络的基站或其它演进型基站。这里，卫星可以为低轨卫星(LEO，Low Earth Orbiting)。需要说明的是，随着卫星无线通信网络的演进，卫星还可以是中轨卫星(MEO，Medium Earth Orbiting)等。
在一个实施例中，该卫星可以是部署在地面基站密度小于密度阈值、无线通信环境的信道质量小于质量阈值的空域。例如，偏远的山区和/或海洋所在空域。
在一个实施例中，请参见图4，卫星包括卫星1和卫星2；卫星1的小区为小区1，为终端的源小 区；卫星2的小区为小区2，假设小区2为终端进行小区重选的目标小区。卫星相对终端运动。当终端相对运动到小区1的边缘位置时，需要执行小区重选，需要重选到小区2，并接入该小区2进行驻留。
在一个实施例中，卫星的信号覆盖的小区为NTN小区，终端当前连接的源小区可以是NTN源小区。在一个实施例中，NTN源小区的覆盖范围可以是NTN源小区的信号能够覆盖到的地面区域的范围。这里，一个卫星可以对应至少一个NTN小区。
在一个实施例中，卫星可以是飞行的基站。基站可以是终端接入NTN的接入设备。
在一个实施例中，卫星的小区跟随卫星运动。这里，终端与NTN源小区之间具有相对速度。
在一些实施例中，终端相对地面保持静止且NTN源小区相对地面沿着固定轨迹运动。或者，终端相对地面运动且NTN源小区相对地面沿着固定轨迹运动。这里，终端与卫星可以是相向或者同向运动。
在一个实施例中，每个源小区都对应一个参考位置。这里，该参考位置可以用来确定该源小区的位置。在一个实施例中，可以是根据源小区的中心位置确定该参考位置。例如，该参考位置可以是源小区的中心位置。
在一个实施例中，基于终端和源小区的参考位置之间的位置关系，确定是否执行小区重选的操作。
这里，终端和源小区之间的位置关系可以是终端和源小区之间的距离关系和/或角度关系。
在一个实施例中，基于终端的坐标位置和源小区的坐标位置之间的关系，确定是否执行小区重选的操作。
在一个实施例中，终端为支持全球导航卫星系统(GNSS，Global Navigation Satellite System)定位的终端。终端通过GNSS周期性地获取终端的坐标位置。如此，可以实时更新终端所处的位置信息。
这里，在不同的时刻，源小区的参考位置不同(由于卫星是移动的，源小区跟随卫星移动，因此，源小区的参考位置也会跟随卫星移动)且参考位置相对源小区的位置不变。
在一个实施例中，终端可以根据接收到的星历信息确定参考位置；基于终端和源小区的参考位置之间的位置关系，确定是否执行小区重选的操作。
这里，终端可以是实时接收基站发送的星历信息。这里，星历信息可以是跟卫星的位置和/或运动状态相关联的信息。在不同的时刻，星历信息包含的信息的参数值可以不同。例如，在不同的时刻，卫星的位置信息可以不同。这里，位置信息可以是位置坐标。在一个实施例中，星历信息，包括以下信息中的至少一种：卫星的运行轨迹信息、卫星的位置信息、卫星的运动速度信息和卫星运行的轨道高度信息。这里，终端可以根据星历信息确定源小区的参考位置。
在一个实施例中，终端通过源小区广播的系统消息获取星历信息。
在一个实施例中，响应于终端和参考位置之间的距离在阈值范围外，确定执行小区重选；或者，响应于终端和参考位置之间的距离在阈值范围内，确定不执行小区重选。
在一个实施例中，参考位置为源小区中心位置，P 1为终端当前的实时位置坐标，P 2为终端根据获取到的星历信息实时计算出的源小区的中心位置坐标，则终端与源小区的中心位置之间的距离：
ΔD＝P 1-P 2
在一个实施例中，当终端与源小区中心位置之间的距离ΔD≥D Thres，终端执行小区重选；否则，不执行小区重选；其中，D Thres为阈值范围指示的门限值。
在另一个实施例中，当第一时刻终端与源小区中心位置之间的距离ΔD t≥D Thres且第二时刻终端与源小区中心位置之间的距离ΔD t-1小于ΔD t，终端执行小区重选；否则，不执行小区重选；其中，D Thres为阈值范围指示的门限值；第二时刻先于第一时刻。如此，可以减少由于终端与源小区中心之间的距离时大时小导致的频繁进行小区重选的情况，终端能够可靠地进行小区重选。
在一个实施例中，可以是基于终端和源小区的参考位置之间的距离和/或角度，确定是否执行小区重选的操作。
在一个实施例中，响应于终端和参考位置之间的相对参考角度和/或距离在阈值范围外，确定执行小区重选；或者，响应于终端和参考位置之间的相对参考角度和/或距离在阈值范围内，确定不执行小区重选。
在一个实施例中，根据第一预定时间段内终端与参考位置之间的距离平均值，确定执行小区重选的操作。
在一个实施例中，响应于在第一预定时间段内终端与参考位置之间的距离平均值在阈值范围外，确定执行小区重选；响应于在第一预定时间段内终端与参考位置之间的距离平均值在阈值范围内，确定不执行小区重选。如此，由于距离平均值能够更加准确地反映出终端与参考位置之间的相对位置关系，终端能够可靠地进行小区重选。
在一个实施例中，响应于终端和参考位置之间的距离在阈值范围外，在第二预定时间段之后确定执行小区重选。这里，由于在终端和参考位置之间的距离在阈值范围外时并不立即执行小区重选，而是在第二预定时间段之后确定执行小区重选，能够减少终端和参考位置之间的距离反复变化带来的频繁小区重选，终端可以可靠地执行小区重选。
在一个实施例中，根据传输数据的信道质量，确定第二预定时间段。在一个实施例中，响应于传输数据的信道质量大于信道质量阈值，确定第二预定时间段小于时间段阈值；响应于传输数据的信道质量小于质量阈值，确定第二预定时间段大于时间段阈值。如此，第二预定时间段可以适应于传输数据的信道质量。
在一个实施例中，根据源小区的信号覆盖范围确定阈值范围。在一个实施例中，响应于源小区的信号覆盖范围大于范围阈值，阈值范围大于第一值；响应于源小区的信号覆盖范围小于范围阈值，阈值范围小于第一值。如此，阈值范围可以根据源小区的信号覆盖范围做适应性调整。在一个实施例中，信号覆盖范围的信息，可以包括：NTN源小区的半径、直径和/或面积的范围。这里，可以是从星历信息中获取信号覆盖范围的信息。
在本公开实施例中，基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；其中，小区，为卫星的信号覆盖的小区。这里，由于是基于终端和源小区之间的位置关系确定是否执行小区重选的操作，因此，只需要获取终端和源小区之间的位置关系，就可以确定是否执行小区重选的操作。基于参考信号接收功率的方式进行小区重选的，切换会更加可靠。如此，可以提升终端的移动性性能。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图5所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤51、基于终端和源小区的参考位置之间的位置关系，确定是否执行小区重选的操作；其中，参考位置相对源小区的位置不变。
在一个实施例中，可以是基于终端和源小区的参考位置之间的距离关系，确定是否执行小区重选的操作。
在一个实施例中，可以是基于终端和源小区的参考位置之间的距离和/或角度，确定是否执行小区重选的操作。
在一个实施例中，响应于终端和参考位置之间的距离在阈值范围外，确定执行小区重选；或者，响应于终端和参考位置之间的距离在阈值范围内，确定不执行小区重选。
在一个实施例中，可以是基于终端和源小区的参考位置之间的距离关系和参考角度关系，确定是否执行小区重选的操作。
在一个实施例中，响应于终端和参考位置之间的距离在距离阈值范围外且终端和源小区的参考位置之间的参考角度在角度阈值范围外，确定执行小区重选；或者，响应于终端和参考位置之间的距离在距离阈值范围内且终端和源小区的参考位置之间的参考角度在角度阈值范围内，确定不执行小区重选。
在一个实施例中，响应于在第一时间段内终端和参考位置之间的距离平均值在距离阈值范围外且终端和源小区的参考位置之间的参考角度平均值在角度阈值范围外，确定执行小区重选；或者，响应于终端和参考位置之间的距离平均值在距离阈值范围内且终端和源小区的参考位置之间的参考角度平均值在角度阈值范围内，确定不执行小区重选。如此，由于距离平均值和角度平均值能够更加准确地反映出终端与参考位置之间的相对位置关系，终端能够可靠地进行小区重选。
在一个实施例中，响应于终端和参考位置之间的距离在阈值范围外且终端和源小区的参考位置之间的参考角度在角度阈值范围外，在第二预定时间段之后确定执行小区重选。这里，由于在终端和参考位置之间的距离在阈值范围外且终端和源小区的参考位置之间的参考角度在角度阈值范围外时并不立即执行小区重选，而是在第二预定时间段之后确定执行小区重选，能够减少终端和参考位置之间的距离和角度反复变化带来的频繁小区重选，终端可以可靠地执行小区重选。
在一个实施例中，每个源小区都对应一个参考位置。这里，该参考位置可以用来确定该源小区的位置。在一个实施例中，可以是根据源小区的中心位置确定该参考位置。例如，该参考位置可以是源小区的中心位置。这里，源小区的信号覆盖区域为圆形，则中心位置可以是该圆形的圆心。
在一个实施例中，终端可以根据接收到的星历信息确定参考位置。这里，终端可以是实时接收基站发送的星历信息。这里，星历信息可以是跟卫星的位置和/或运动状态相关联的信息。
在一个实施例中，在不同的时刻，星历信息包含的信息的参数值可以不同。例如，在不同的时刻，卫星的位置信息可以不同，卫星的小区位置也会不同。这里，位置信息可以是位置坐标。在一个实施例中，星历信息，包括以下信息中的至少一种：卫星的运行轨迹信息、卫星的位置信息、卫星的运动速度信息和卫星运行的轨道高度信息。这里，由于卫星的小区所处位置与卫星的星历信息关联，因此，终端可以根据星历信息确定源小区的参考位置。这里，需要说明的是，参考位置是一个基于卫星的小区为参考确定的位置，因此，在卫星的小区移动时，参考位置相对卫星的小区的位置并不会发生变化，参考位 置会跟随卫星的小区移动。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图6所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤61、响应于终端和参考位置之间的距离在阈值范围外，确定执行小区重选；或者，响应于终端和参考位置之间的距离在阈值范围内，确定不执行小区重选。
在一个实施例中，参考位置为源小区中心位置，P 1为终端当前的实时位置坐标，P 2为终端根据获取到的星历信息实时计算出的源小区的中心位置坐标，则终端与源小区的中心位置之间的距离：
ΔD＝P 1-P 2
在一个实施例中，当终端与源小区中心位置之间的距离ΔD≥D Thres，终端执行小区重选；否则，不执行小区重选；其中，D Thres为阈值范围指示的门限值。
在另一个实施例中，当第一时刻终端与源小区中心位置之间的距离ΔD t≥D Thres且第二时刻终端与源小区中心位置之间的距离ΔD t-1小于ΔD t，终端执行小区重选；否则，不执行小区重选；其中，D Thres为阈值范围指示的门限值；第二时刻先于第一时刻。如此，可以减少由于终端与源小区中心之间的距离时大时小导致的频繁进行小区重选的情况，终端能够可靠地进行小区重选。
在一个实施例中，可以是根据第一预定时间段内终端和源小区的参考位置之间的距离平均值，确定是否执行小区重选的操作。
在一个实施例中，响应于在第一预定时间段内终端与参考位置之间的距离平均值在阈值范围外，确定执行小区重选；响应于在第一预定时间段内终端与参考位置之间的距离平均值在阈值范围内，确定不执行小区重选。如此，由于距离平均值能够更加准确地反映出终端与参考位置之间的相对位置关系，终端能够可靠地进行小区重选。
在一个实施例中，响应于终端和参考位置之间的距离在阈值范围外，在第二预定时间段之后确定执行小区重选。这里，由于在终端和参考位置之间的距离在阈值范围外时并不立即执行小区重选，而是在第二预定时间段之后确定执行小区重选，能够减少终端和参考位置之间的距离反复变化带来的频繁小区重选，终端可以可靠地执行小区重选。
在一个实施例中，根据源小区的信号覆盖范围确定阈值范围。在一个实施例中，响应于源小区的信号覆盖范围大于范围阈值，阈值范围大于第一值；响应于源小区的信号覆盖范围小于范围阈值，阈值范围小于第一值。如此，阈值范围可以根据源小区的信号覆盖范围做适应性调整。在一个实施例中，信号覆盖范围的信息，可以包括：NTN源小区的半径、直径和/或面积的信息。这里，可以是从星历信息中获取信号覆盖范围的信息。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图7所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤71、根据源小区的信号覆盖区域大小，确定阈值范围。
在一个实施例中，源小区的信号覆盖区域可以是NTN源小区的信号能够覆盖到的地面区域。
在一个实施例中，根据源小区的卫星的发射功率，确定源小区的信号覆盖区域大小。
在一个实施例中，响应于源小区的卫星的发射功率大于功率阈值，确定源小区的信号覆盖区域大小大于第二值；响应于源小区的卫星的发射功率小于功率阈值，确定源小区的信号覆盖区域大小小于第二值。如此，源小区的信号覆盖区域可以根据源小区的卫星的发射功率进行适应性调整。
在一个实施例中，根据源小区的信号覆盖范围确定阈值范围。在一个实施例中，响应于源小区的信号覆盖范围大于范围阈值，阈值范围大于第一值；响应于源小区的信号覆盖范围小于范围阈值，阈值范围小于第一值。如此，阈值范围可以根据源小区的信号覆盖范围做适应性调整。在一个实施例中，信号覆盖范围的信息，可以包括：源小区的半径、直径和/或面积的范围。在一个实施例中，信号覆盖范围的信息，可以包括：NTN源小区的半径、直径和/或面积的范围。这里，可以是从星历信息中获取信号覆盖范围的信息。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图8所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤81、响应于在第一时刻的终端和参考位置之间的第一距离在阈值范围外且第一距离大于第二距离，确定执行小区重选；
其中，第二距离，为在第二时刻的终端和参考位置之间的距离；第二时刻先于第一时刻。
在一个实施例中，响应于终端朝着与参考位置相反的方向移动，确定第一距离大于第二距离；响应于终端朝着与参考位置相同的方向移动，确定第一距离小于第二距离。
在一个实施例中，在第二时刻，终端和参考位置之间的距离为第二距离；在第一时刻，终端和参考位置之间的距离为第一距离；响应于第一距离在阈值范围外且第一距离大于第二距离，确定执行小区重选。
在一个实施例中，第一距离在阈值范围外，可以是第一距离大于阈值范围指示的门限值。在一个实施例中，响应于第一距离大于阈值范围指示的门限值且第一距离大于第二距离，确定执行小区重选。
这里，时域上第二时刻在第一时刻之前。第一时刻可以是当前时刻。这里，第二时刻可以是第一时刻之前的终端检测终端与参考位置之间的位置关系的时刻。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图9所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤91、接收基站发送的星历信息；
根据星历信息，确定参考位置的位置。
这里，在不同时刻，源小区的参考位置不同(由于卫星是移动的，源小区跟随卫星移动，因此，源 小区的参考位置也会跟随卫星移动)且参考位置相对源小区的位置不变。
在一个实施例中，终端可以是周期性地接收基站发送的星历信息。这里，星历信息可以是跟卫星的位置和/或运动状态相关联的信息。在不同的时刻，星历信息包含的信息的参数值可以不同。例如，在不同的时刻，卫星的位置信息可以不同。这里，位置信息可以是位置坐标。在一个实施例中，星历信息，包括以下信息中的至少一种：卫星的运行轨迹信息、卫星的位置信息、卫星的运动速度信息和卫星运行的轨道高度信息。这里，由于参考位置与历信息关联，终端可以根据星历信息确定源小区的参考位置。
在一个实施例中，参考位置，为根据源小区的中心位置确定的位置；其中，源小区的中心位置是根据星历信息确定的。
例如，请参见图10，在A时刻，卫星在运行轨迹的a位置，其运行高度为h，则可以基于a位置和h确定参考位置。这里，参考位置为小区的中心位置。
需要说明的是：参考位置也可以是根据源小区的中心位置确定的其他位置。例如，可以确定在中心位置正北方且距离中心位置为a的位置为参考位置。
在一个实施例中，响应于终端与基站建立RRC连接，接收基站发送的星历信息。
在一个实施例中，接收携带星历信息的RRC消息。
在一个实施例中，接收携带星历信息的随机接入消息。这里，随机接入消息可以包括第2随机接入消息和第4随机接入消息。
如此，可以提升RRC消息和随机接入消息的信令兼容性。
在一个实施例中，终端通过源小区广播的系统消息获取星历信息。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图11所示，本实施例中提供一种重选小区的方法，其中，该方法被终端执行，该方法，包括：
步骤111、接收小区重选的目标小区的小区配置信息。
在一个实施例中，小区配置信息，包括以下一种或多种：
目标小区的频点信息；
小区标识ID信息；
同步信号块的测量时间配置SMTC信息；
子载波间隔信息。
在一个实施例中，终端通过系统消息接收小区重选的目标小区的小区配置信息。
这里，在终端接收到目标小区的小区配置信息并重选至目标小区后，可以利用该小区配置信息在目标小区中进行数据传输。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
如图12所示，本公开实施例中提供一种重选小区的装置，其中，应用于终端，该装置，包括确定 模块121；其中，
确定模块121，被配置为：基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；其中，小区，为卫星的信号覆盖的小区。
需要说明的是，本领域内技术人员可以理解，本公开实施例提供的方法，可以被单独执行，也可以与本公开实施例中一些方法或相关技术中的一些方法一起被执行。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开实施例提供一种通信设备，通信设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为：用于运行可执行指令时，实现应用于本公开任意实施例的方法。
其中，处理器可包括各种类型的存储介质，该存储介质为非临时性计算机存储介质，在通信设备掉电之后能够继续记忆存储其上的信息。
处理器可以通过总线等与存储器连接，用于读取存储器上存储的可执行程序。
本公开实施例还提供一种计算机存储介质，其中，计算机存储介质存储有计算机可执行程序，可执行程序被处理器执行时实现本公开任意实施例的方法。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
如图13所示，本公开一个实施例提供一种终端的结构。
参照图13所示终端800本实施例提供一种终端800，该终端具体可是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图13，终端800可以包括以下一个或多个组件：处理组件802，存储器804，电源组件806，多媒体组件808，音频组件810，输入/输出(I/O)的接口812，传感器组件814，以及通信组件816。
处理组件802通常控制终端800的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件802可以包括一个或多个处理器820来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件802可以包括一个或多个模块，便于处理组件802和其他组件之间的交互。例如，处理组件802可以包括多媒体模块，以方便多媒体组件808和处理组件802之间的交互。
存储器804被配置为存储各种类型的数据以支持在设备800的操作。这些数据的示例包括用于在终端800上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器804可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只 读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件806为终端800的各种组件提供电力。电源组件806可以包括电源管理系统，一个或多个电源，及其他与为终端800生成、管理和分配电力相关联的组件。
多媒体组件808包括在终端800和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件808包括一个前置摄像头和/或后置摄像头。当设备800处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件810被配置为输出和/或输入音频信号。例如，音频组件810包括一个麦克风(MIC)，当终端800处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器804或经由通信组件816发送。在一些实施例中，音频组件810还包括一个扬声器，用于输出音频信号。
I/O接口812为处理组件802和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件814包括一个或多个传感器，用于为终端800提供各个方面的状态评估。例如，传感器组件814可以检测到设备800的打开/关闭状态，组件的相对定位，例如组件为终端800的显示器和小键盘，传感器组件814还可以检测终端800或终端800一个组件的位置改变，用户与终端800接触的存在或不存在，终端800方位或加速/减速和终端800的温度变化。传感器组件814可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件814还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件814还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件816被配置为便于终端800和其他设备之间有线或无线方式的通信。终端800可以接入基于通信标准的无线网络，如Wi-Fi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件816经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，通信组件816还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，终端800可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器804，上述指令可由终端800的处理器820执行以完成上述方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
如图14所示，本公开一实施例示出一种基站的结构。例如，基站900可以被提供为一网络侧设备。参照图14，基站900包括处理组件922，其进一步包括一个或多个处理器，以及由存储器932所代表的存储器资源，用于存储可由处理组件922的执行的指令，例如应用程序。存储器932中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件922被配置为执行指令，以执行上述方法前述应用在所述基站的任意方法。
基站900还可以包括一个电源组件926被配置为执行基站900的电源管理，一个有线或无线网络接口950被配置为将基站900连接到网络，和一个输入输出(I/O)接口958。基站900可以操作基于存储在存储器932的操作系统，例如Windows Server TM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTM或类似。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本公开旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (12)

  1. 一种重选小区的方法，其中，该方法被终端执行，所述方法，包括：
    基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；
    其中，所述小区，为卫星的信号覆盖的小区。
  2. 根据权利要求1所述的方法，其中，所述基于终端和源小区之间的位置关系，确定是否执行小区重选的操作，包括：
    基于所述终端和所述源小区的参考位置之间的位置关系，确定是否执行小区重选的操作；
    其中，所述参考位置相对所述源小区的位置不变。
  3. 根据权利要求2所述的方法，其中，所述基于所述终端和所述源小区的参考位置之间的位置关系，确定是否执行小区重选的操作，包括：
    响应于所述终端和所述源小区的参考位置之间的距离在阈值范围外，确定执行小区重选；
    或者，
    响应于所述终端和所述源小区的参考位置之间的距离在阈值范围内，确定不执行小区重选。
  4. 根据权利要求3所述的方法，其中，所述方法，还包括：
    根据所述源小区的信号覆盖区域大小，确定所述阈值范围。
  5. 根据权利要求3所述的方法，其中，所述响应于所述终端和所述源小区的参考位置之间的距离在阈值范围外，确定执行小区重选，包括：
    响应于在第一时刻的所述终端和所述源小区的参考位置之间的第一距离在阈值范围外且所述第一距离大于第二距离，确定执行小区重选；
    其中，所述第二距离，为在第二时刻的所述终端和所述源小区的参考位置之间的距离；所述第二时刻先于所述第一时刻。
  6. 根据权利要求2所述的方法，其中，所述方法，还包括：
    接收基站发送的星历信息；
    根据所述星历信息，确定所述源小区的参考位置的位置。
  7. 根据权利要求6所述的方法，其中，所述参考位置，为根据所述源小区的中心位置确定的位置；其中，所述源小区的中心位置是根据所述星历信息确定的。
  8. 根据权利要求1所述的方法，其中，所述方法，还包括：
    接收小区重选的目标小区的小区配置信息。
  9. 根据权利要求8所述的方法，其中，所述小区配置信息，包括以下一种或多种：
    目标小区的频点信息；
    小区标识ID信息；
    同步信号块的测量时间配置SMTC信息；
    子载波间隔信息。
  10. 一种重选小区的装置，其中，应用于终端，所述装置，包括确定模块；其中，
    所述确定模块，被配置为：基于终端和源小区之间的位置关系，确定是否执行小区重选的操作；其 中，所述小区，为卫星的信号覆盖的小区。
  11. 一种通信设备，其中，包括：
    天线；
    存储器；
    处理器，分别与所述天线及存储器连接，被配置为通过执行存储在所述存储器上的计算机可执行指令，控制所述天线的收发，并能够实现权利要求1至9任一项提供的方法。
  12. 一种计算机存储介质，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令被处理器执行后能够实现权利要求1至9任一项提供的方法。
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