WO2017128568A1 - 一种波束切换的方法、移动卫星终端及关口站 - Google Patents
一种波束切换的方法、移动卫星终端及关口站 Download PDFInfo
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- WO2017128568A1 WO2017128568A1 PCT/CN2016/082919 CN2016082919W WO2017128568A1 WO 2017128568 A1 WO2017128568 A1 WO 2017128568A1 CN 2016082919 W CN2016082919 W CN 2016082919W WO 2017128568 A1 WO2017128568 A1 WO 2017128568A1
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- Prior art keywords
- signal strength
- target beam
- satellite terminal
- mobile satellite
- pilot signal
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004891 communication Methods 0.000 claims abstract description 55
- 238000005516 engineering process Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- 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
- H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
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- 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
Definitions
- the present invention belongs to the field of communications technologies, and in particular, to a beam switching method, a mobile satellite terminal, and a gateway station.
- Mobile broadband satellite communication systems operate in the Ka and Ku bands, consisting of transparently forwarded high-orbiting satellites, gateway stations and mobile satellite terminals, using a star-like network to provide interactive and diverse broadband multimedia for mobile users. Transmission business. When the mobile satellite terminal moves, it will be affected by rain attenuation, shadow fading, etc. When the mobile satellite terminal moves from the current beam range to another beam range, the signal strength and position information received by the mobile satellite terminal will be interfered. , after performing beam switching, it will cause an incorrect switch.
- the existing beam switching technology is a Global Positioning System (GPS) based on a mobile satellite terminal and a Beidou satellite navigation system (BeiDou Navigation Satellite).
- GPS Global Positioning System
- Beidou satellite navigation system BeiDou Navigation Satellite
- each beam has coverage, and the location information of the mobile satellite terminal under the beam is clearly defined.
- the communication system completes the beam switching operation by switching the beam of the mobile satellite terminal to the new corresponding coverage beam according to the new location information.
- it is necessary to initialize the parameters of the mobile satellite terminal, and then switch to the next beam frequency point to establish a communication connection with the next beam, which causes the mobile satellite terminal to have a few seconds. Interruption of communication to tens of seconds, affecting the mobile user experience.
- the embodiments of the present invention provide a method for beam switching, a mobile satellite terminal, and a gateway station, which are intended to solve the problem that the existing beam switching technology causes communication interruption.
- a first aspect of the embodiments of the present invention provides a method for beam switching, where the method includes:
- a second aspect of the embodiments of the present invention provides a method for beam switching, where the method includes:
- a third aspect of the embodiments of the present invention provides a mobile satellite terminal, where the mobile satellite terminal includes: [0016] an acquisition module, a location information sending module, an instruction information receiving module, and an indication information receiving module; [0017] The acquiring module is configured to acquire a received signal strength value of a current beam and a received signal strength value of the target beam;
- the location information sending module is configured to: if the received signal strength value of the target beam is greater than the current Receiving the signal strength value of the beam, transmitting the location information of the mobile satellite terminal to the gateway station, so that the gateway station detects that the mobile satellite terminal reaches the switching position, and feeds back the command information;
- the instruction information receiving module is configured to receive the instruction information fed back by the gateway station, detect a pilot signal strength of the target beam according to the instruction information, and send the pilot signal strength of the target beam Giving the gateway station, so that the gateway station detects that the pilot signal strength of the target beam meets a preset index requirement, and feeds back the handover indication information;
- the indication information receiving module is configured to receive the switching indication information that is fed back by the gateway station, and disconnect the communication connection with the current beam according to the handover indication information.
- a gateway station is provided, where the gateway station includes:
- a location information receiving module configured to receive location information sent by the mobile satellite terminal, and after detecting that the mobile satellite terminal arrives at the handover location, send instruction information to the mobile satellite terminal, so that the mobile satellite terminal is configured according to The command information detects a pilot signal strength of the target beam, and feeds back a pilot signal strength of the target beam;
- a signal strength receiving module configured to receive a pilot signal strength of the target beam fed back by the mobile satellite terminal, and after detecting that the pilot signal strength of the target beam meets a preset index requirement, The mobile satellite terminal transmits handover indication information to cause the mobile satellite terminal to disconnect the communication connection with the current beam according to the handover indication information.
- the embodiment of the present invention detects through the gateway station.
- the location of the mobile satellite terminal when detecting that the mobile satellite terminal arrives at the handover position, enters the handover preparation phase and transmits command information to the mobile satellite terminal, and the mobile satellite terminal establishes a communication connection with the target beam according to the command information, and the detected target beam
- the pilot signal strength is sent to the gateway station.
- the mobile satellite terminal breaks the communication connection with the current beam, ensuring the correctness of the beam switching, and implementing a seamless beam. The switching effectively solves the problem that the existing beam switching technology causes communication interruption, and improves the user experience of the mobile user.
- FIG. 1 is a flowchart of an implementation of a beam switching method according to Embodiment 1 of the present invention.
- FIG. 2 is a flowchart of an implementation of a beam switching method according to Embodiment 2 of the present invention.
- FIG. 3 is a flowchart of a specific implementation of a beam switching method according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic diagram showing the composition of a mobile satellite terminal according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic diagram of the composition of a gateway station according to Embodiment 5 of the present invention.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- Embodiment 1 is a flowchart showing an implementation process of a beam switching method according to Embodiment 1 of the present invention.
- the implementation process is as follows:
- step S101 acquiring a received signal strength value of the current beam and a received signal strength value of the target beam.
- the mobile satellite terminal acquires the received signal strength value of the current beam and the received signal strength value of the target beam during the cross beam movement process, and the mobile satellite terminal is performed by the mobile user through the mobile broadband satellite communication system.
- a mobile communication terminal through which a mobile user can obtain services such as voice, image, data, and the like in a high-speed mobile environment.
- the received signal strength value of the current beam acquired by the mobile satellite terminal gradually decreases.
- step S102 if the received signal strength value of the target beam is greater than the received signal strength value of the current beam, the location information of the mobile satellite terminal is sent to the gateway station, so that the gateway station Detecting that the mobile satellite terminal arrives at the switching position, feedback instruction information;
- the location information of the mobile satellite terminal is obtained by the GPS and/or BDS positioning module of the mobile satellite terminal, and the location information is transmitted to the gateway station by the modem of the mobile satellite terminal.
- the gateway station is a background device management system, which is mainly responsible for call management, handover control, and interconnection with other network systems, for example: providing an interface between a mobile broadband satellite communication system and a terrestrial mobile communication network to implement interconnection; controlling mobile satellite terminal connection Into the mobile broadband satellite communication system, and to ensure that the communication connection of the mobile satellite terminal in the process of communication is not interrupted.
- the switching position is an overlapping area between the current beam and the target beam
- the instruction information includes, but is not limited to, frequency point information of the target beam.
- step S103 receiving the instruction information fed back by the gateway station, detecting a pilot signal strength of the target beam according to the instruction information, and transmitting a pilot signal strength of the target beam to the gateway a station, so that the gateway station detects that the pilot signal strength of the target beam meets a preset index requirement, and returns a handover indication information;
- the mobile satellite terminal transmits the pilot signal strength of the target beam to the gateway station via a modem.
- the command information includes frequency point information of the target beam
- the detecting the pilot signal strength of the target beam according to the instruction information includes:
- the mobile satellite terminal according to the frequency point information of the target beam, establishes a communication connection with the target beam in an overlapping area of the current beam and the target beam, so that the mobile satellite terminal is the same
- the current beam and the target beam establish a communication connection, which solves the problem that the mobile satellite terminal performs beam switching and communication interruption.
- step S104 receiving the handover indication information fed back by the gateway station, and disconnecting the communication connection with the current beam according to the handover indication information.
- the mobile satellite terminal after the mobile satellite terminal disconnects the communication connection with the current beam according to the handover indication information, the mobile satellite terminal maintains a communication connection with the target beam, thereby implementing seamless beam switching.
- the location information of the mobile satellite terminal is sent to the gateway station, so that the gateway station detects After the mobile satellite terminal arrives at the handover position, it enters the handover preparation phase.
- the mobile satellite terminal breaks the communication connection with the current beam, ensuring the correctness of the beam handover, and realizing Seamless beam switching effectively solves the problem of communication interruption caused by existing beam switching technology, and improves the user experience of mobile users.
- Embodiment 2 is a diagrammatic representation of Embodiment 1
- Embodiment 2 shows an implementation flow of a beam switching method according to Embodiment 2 of the present invention.
- the implementation process is as follows:
- step S201 receiving location information sent by the mobile satellite terminal, and transmitting the command information to the mobile satellite terminal after detecting that the mobile satellite terminal arrives at the handover location, so that the mobile satellite terminal is in accordance with the
- the command information detects a pilot signal strength of the target beam, and feeds back a pilot signal strength of the target beam;
- the gateway station receives location information sent by the mobile satellite terminal, and the location information is obtained by using a GPS and/or BDS positioning module of the mobile satellite terminal, and detecting that the mobile satellite terminal arrives
- the overlapping region of the current beam and the target beam transmits instruction information to the mobile satellite terminal, where the command information includes, but is not limited to, frequency point information of the target beam.
- step S202 receiving a pilot signal strength of the target beam fed back by the mobile satellite terminal, and detecting that the pilot signal strength of the target beam meets a preset index requirement, to the mobile satellite
- the terminal transmits handover indication information, so that the mobile satellite terminal disconnects the communication connection with the current beam according to the handover indication information.
- sending the handover indication information to the mobile satellite terminal includes:
- the mobile satellite terminal After detecting that the pilot signal strength of the target beam is greater than a preset threshold, and the difference between the pilot signal strength of the target beam and the preset threshold is greater than a hysteresis margin, The mobile satellite terminal transmits handover indication information.
- the setting of the preset threshold is related to the number of handovers required for beam switching. If the number of handovers of the beam switching is required, the preset threshold is set to a low point, if required. Beam switching If the number of switching is small, the preset threshold is set to a high point.
- the hysteresis margin is used to describe the difference between the pilot signal strength of the target beam and the preset threshold. Setting the hysteresis margin can avoid the ping-pong effect and the repeated back-and-forth switching. Preferably, the hysteresis margin is 0.2 dBm.
- the gateway station detects that the mobile satellite terminal arrives at the handover position, enters a handover preparation phase, and sends instruction information to the mobile satellite terminal, so that the mobile satellite terminal establishes a communication connection with the target beam according to the instruction information.
- the gateway station sends the handover indication information to the mobile satellite terminal, so that the mobile satellite terminal disconnects the communication connection with the current beam, thereby ensuring the correctness of the beam switching, and realizing Seamless beam switching effectively solves the problem of communication interruption caused by existing beam switching technology, and improves the user experience of mobile users.
- Embodiment 3 is a specific implementation flow of a beam switching method according to Embodiment 3 of the present invention.
- the implementation process is as follows:
- step S301 the mobile terminal acquires the received signal strength value of the current beam and the received signal strength value of the target beam;
- step S302 the mobile satellite terminal detects whether the received signal strength value of the target beam is greater than the received signal strength value of the current beam
- the mobile satellite terminal detects whether the received signal strength value of the target beam is greater than the received signal strength value of the current beam. If yes, step S303 is performed, and step S301 is performed.
- step S303 the mobile satellite terminal sends the location information to the gateway station;
- step S304 the gateway station detects whether the mobile satellite terminal reaches the switching position
- the gateway station detects whether the mobile satellite terminal has reached the switching position. If yes, step S305 is performed, and step S303 is performed.
- step S305 the gateway station sends the command information to the mobile satellite terminal
- step S306 the mobile satellite terminal detects the pilot signal strength of the target beam according to the instruction information, and transmits the pilot signal strength of the target beam to the gateway;
- step S307 the gateway station detects whether the pilot signal strength of the target beam meets the preset index requirement. In the embodiment of the present invention, the gateway station detects whether the pilot signal strength of the target beam meets the preset index. If yes, go to step S308, otherwise, go to step S306. [0068] In step S308, the gateway station sends handover indication information to the mobile satellite terminal;
- step S309 the mobile satellite terminal disconnects the communication connection with the current beam according to the handover indication information.
- the mobile satellite terminal when the received signal strength value of the target beam acquired by the mobile satellite terminal is greater than the received signal strength value of the current beam, the location of the mobile satellite terminal is detected by the gateway station, and when the mobile satellite terminal detects the handover position, Entering the handover preparation phase and transmitting instruction information to the mobile satellite terminal, the mobile satellite terminal establishes a communication connection with the target beam according to the instruction information, and transmits the detected pilot signal strength of the target beam to the gateway station, when the pilot of the target beam The signal strength meets the requirements of the preset index.
- the mobile satellite terminal breaks the communication connection with the current beam, ensures the correctness of the beam switching, and realizes seamless beam switching, effectively solving the problem of communication interruption caused by the existing beam switching technology. Improve the user experience of mobile users.
- Embodiment 4 is a diagrammatic representation of Embodiment 4
- FIG. 4 is a schematic diagram showing the composition of a mobile satellite terminal according to Embodiment 4 of the present invention, for convenience of description.
- the obtaining module 41 is configured to acquire a received signal strength value of the current beam and a received signal strength value of the target beam;
- the location information sending module 42 is configured to: if the received signal strength value of the target beam is greater than the received signal strength value of the current beam, send location information of the mobile satellite terminal to the gateway station, so that the gateway After detecting that the mobile satellite terminal reaches the switching position, the station feeds back the command information;
- the instruction information receiving module 43 is configured to receive the instruction information fed back by the gateway station, detect a pilot signal strength of the target beam according to the instruction information, and send the pilot signal strength of the target beam to The gateway station, so that the gateway station detects that the pilot signal strength of the target beam meets a preset index requirement, and feeds back the handover indication information;
- the instruction information includes frequency point information of the target beam
- the instruction information receiving module 43 is configured to:
- the indication information receiving module 44 is configured to receive the handover indication information fed back by the gateway station, and disconnect the communication connection with the current beam according to the handover indication information.
- the mobile satellite terminal provided by the embodiment of the present invention may be used in the foregoing corresponding method embodiment 1. For details, refer to the description of the first embodiment, and details are not described herein again.
- the location information of the mobile satellite terminal is sent to the gateway station, so that the gateway station detects After the mobile satellite terminal arrives at the handover position, it enters the handover preparation phase.
- the mobile satellite terminal breaks the communication connection with the current beam, ensuring the correctness of the beam handover, and realizing Seamless beam switching effectively solves the problem of communication interruption caused by existing beam switching technology, and improves the user experience of mobile users.
- Embodiment 5 is a diagrammatic representation of Embodiment 5:
- FIG. 5 is a schematic diagram showing the composition of a gateway station according to Embodiment 5 of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown, which are as follows:
- the location information receiving module 51 is configured to receive location information sent by the mobile satellite terminal, and send the command information to the mobile satellite terminal after detecting that the mobile satellite terminal arrives at the handover location, so that the mobile satellite terminal And detecting, according to the instruction information, a pilot signal strength of the target beam, and feeding back a pilot signal strength of the target beam;
- the signal strength receiving module 52 is configured to receive a pilot signal strength of the target beam that is fed back by the mobile satellite terminal, and after detecting that the pilot signal strength of the target beam meets a preset index requirement, The mobile satellite terminal transmits handover indication information, so that the mobile satellite terminal disconnects the communication connection with the current beam according to the handover indication information.
- the signal strength receiving module 52 is configured to:
- the mobile satellite terminal After detecting that the pilot signal strength of the target beam is greater than a preset threshold, and the difference between the pilot signal strength of the target beam and the preset threshold is greater than a lag margin, The mobile satellite terminal transmits handover indication information.
- the gateway station provided by the embodiment of the present invention may be used in the foregoing corresponding method embodiment 2.
- the mobile satellite terminal when the received signal strength value of the target beam acquired by the mobile satellite terminal is greater than the received signal strength value of the current beam, the location of the mobile satellite terminal is detected by the gateway station, and when the mobile satellite terminal arrives Switching to position ⁇ , entering the handover preparation phase and transmitting instruction information to the mobile satellite terminal, the mobile satellite terminal establishes a communication connection with the target beam according to the instruction information, and transmits the detected pilot signal strength of the target beam to the gateway station, when the target beam The pilot signal strength meets the requirements of the preset index.
- the mobile satellite terminal breaks the communication connection with the current beam, ensures the correctness of the beam switching, and realizes seamless beam switching, effectively solving the communication interruption caused by the existing beam switching technology. The problem is to improve the user experience of mobile users.
- the storage medium includes a ROM/RAM, a magnetic disk, an optical disk, and the like.
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Abstract
一种波束切换的方法、移动卫星终端及关口站，该方法包括：获取当前波束的接收信号强度值和目标波束的接收信号强度值；若目标波束的接收信号强度值大于当前波束的接收信号强度值，则将移动卫星终端的位置信息发送给关口站，以使得关口站在检测到移动卫星终端到达切换位置时，反馈指令信息；接收关口站反馈的指令信息，根据指令信息检测目标波束的导频信号强度，并将目标波束的导频信号强度发送给关口站，以使得关口站在检测到目标波束的导频信号强度符合预设指标要求时，反馈切换指示信息；接收关口站反馈的切换指示信息，根据切换指示信息断开与当前波束的通信连接。解决了现有波束切换技术导致通信中断的问题。
Description
一种波束切换的方法、 移动卫星终端及关口站 技术领域
[0001] 本发明属于通信技术领域， 尤其涉及一种波束切换的方法、 移动卫星终端及关 口站。
背景技术
[0002] 我国拥有世界上最大规模的移动用户， 如汽车、 高铁和船舶等移动用户具有分 布范围广、 数量多、 移动速度快、 移动路径具有一定规模等特点， 利用移动宽 带卫星通信系统为移动用户提供宽带通信业务， 具有波束覆盖范围大、 节约地 面资源， 易于广播和多址通信等优势。
[0003] 移动宽带卫星通信系统工作在 Ka和 Ku频段， 由透明转发的高轨道卫星、 关口 站和移动卫星终端构成， 采用星状方式组网， 为移动用户提供交互式和多样化 的宽带多媒体传输业务。 移动卫星终端在移动的过程中， 会受到雨衰、 阴影衰 落等影响， 当移动卫星终端从当前波束范围移动到另一个波束范围吋， 移动卫 星终端所接收到的信号强度和位置信息会受到干扰， 在进行波束切换吋会导致 错误切换。
[0004] 现有的波束切换技术是基于移动卫星终端的全球定位系统 （Global Positioning System, GPS) 和中国北斗卫星导航系统 （BeiDou Navigation Satellite
System, BDS) ， 每个波束都有覆盖范围， 对波束下移动卫星终端的位置信息都 有明确规定， 当一个移动卫星终端离幵当前波束的覆盖范围吋， 由于位置信息 发生变化， 移动宽带卫星通信系统根据新的位置信息， 将移动卫星终端所在波 束切换到新的对应覆盖范围的波束下而完成波束切换操作。 然而， 现有的波束 切换技术断幵当前通信连接后， 需初始化移动卫星终端的参数， 再切换至下一 波束频点， 与下一波束建立通信连接， 这样就会造成移动卫星终端有几秒至几 十秒吋间的通信中断， 影响移动用户的使用体验。
[0005] 故， 有必要提出一种新的技术方案， 以解决上述技术问题。
技术问题
[0006] 鉴于此， 本发明实施例提供一种波束切换的方法、 移动卫星终端及关口站， 旨 在解决现有波束切换技术导致通信中断的问题。
问题的解决方案
技术解决方案
[0007] 本发明实施例的第一方面， 提供一种波束切换的方法， 所述方法包括：
[0008] 获取当前波束的接收信号强度值和目标波束的接收信号强度值；
[0009] 若所述目标波束的接收信号强度值大于所述当前波束的接收信号强度值， 则将 移动卫星终端的位置信息发送给关口站， 以使得所述关口站在检测到所述移动 卫星终端到达切换位置吋， 反馈指令信息；
[0010] 接收所述关口站反馈的所述指令信息， 根据所述指令信息检测目标波束的导频 信号强度， 并将所述目标波束的导频信号强度发送给所述关口站， 以使得所述 关口站在检测到所述目标波束的导频信号强度符合预设指标要求吋， 反馈切换 指示信息；
[0011] 接收所述关口站反馈的所述切换指示信息， 根据所述切换指示信息断幵与所述 当前波束的通信连接。
[0012] 本发明实施例的第二方面， 提供一种波束切换的方法， 所述方法包括：
[0013] 接收移动卫星终端发送的位置信息， 在检测到所述移动卫星终端到达切换位置 吋， 向所述移动卫星终端发送指令信息， 以使得所述移动卫星终端根据所述指 令信息检测目标波束的导频信号强度， 并反馈所述目标波束的导频信号强度； [0014] 接收所述移动卫星终端反馈的所述目标波束的导频信号强度， 在检测到所述目 标波束的导频信号强度符合预设指标要求吋， 向所述移动卫星终端发送切换指 示信息， 以使得所述移动卫星终端根据所述切换指示信息断幵与当前波束的通 信连接。
[0015] 本发明实施例的第三方面， 提供一种移动卫星终端， 所述移动卫星终端包括： [0016] 获取模块、 位置信息发送模块、 指令信息接收模块以及指示信息接收模块； [0017] 所述获取模块， 用于获取当前波束的接收信号强度值和目标波束的接收信号强 度值；
[0018] 所述位置信息发送模块， 用于若所述目标波束的接收信号强度值大于所述当前
波束的接收信号强度值， 则将移动卫星终端的位置信息发送给关口站， 以使得 所述关口站在检测到所述移动卫星终端到达切换位置吋， 反馈指令信息；
[0019] 所述指令信息接收模块， 用于接收所述关口站反馈的所述指令信息， 根据所述 指令信息检测目标波束的导频信号强度， 并将所述目标波束的导频信号强度发 送给所述关口站， 以使得所述关口站在检测到所述目标波束的导频信号强度符 合预设指标要求吋， 反馈切换指示信息；
[0020] 所述指示信息接收模块， 用于接收所述关口站反馈的所述切换指示信息， 根据 所述切换指示信息断幵与所述当前波束的通信连接。
[0021] 本发明实施例的第四方面， 提供一种关口站， 所述关口站包括：
[0022] 位置信息接收模块， 用于接收移动卫星终端发送的位置信息， 在检测到所述移 动卫星终端到达切换位置吋， 向所述移动卫星终端发送指令信息， 以使得所述 移动卫星终端根据所述指令信息检测目标波束的导频信号强度， 并反馈所述目 标波束的导频信号强度；
[0023] 信号强度接收模块， 用于接收所述移动卫星终端反馈的所述目标波束的导频信 号强度， 在检测到所述目标波束的导频信号强度符合预设指标要求吋， 向所述 移动卫星终端发送切换指示信息， 以使得所述移动卫星终端根据所述切换指示 信息断幵与当前波束的通信连接。
发明的有益效果
有益效果
[0024] 本发明实施例与现有技术相比存在的有益效果是： 本发明实施例当移动卫星终 端获取的目标波束的接收信号强度值大于当前波束的接收信号强度值吋， 通过 关口站检测移动卫星终端的位置， 当检测到移动卫星终端到达切换位置吋， 进 入切换准备阶段并向移动卫星终端发送指令信息， 移动卫星终端根据指令信息 与目标波束建立通信连接， 并将检测到的目标波束的导频信号强度发送给关口 站， 当目标波束的导频信号强度符合预设指标要求吋， 移动卫星终端断幵与当 前波束的通信连接， 保证了波束切换的正确性， 实现了无缝波束切换， 有效解 决了现有波束切换技术导致通信中断的问题， 提高了移动用户的使用体验。 对附图的简要说明
附图说明
[0025] 为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例或现有技术描 述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是 本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动性 的前提下， 还可以根据这些附图获得其他的附图。
[0026] 图 1是本发明实施例一提供的波束切换方法的实现流程图；
[0027] 图 2是本发明实施例二提供的波束切换方法的实现流程图；
[0028] 图 3是本发明实施例三提供的波束切换方法的具体实现流程图；
[0029] 图 4是本发明实施例四提供的移动卫星终端的组成示意图；
[0030] 图 5是本发明实施例五提供的关口站的组成示意图。
本发明的实施方式
[0031] 为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实施例 ， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用 以解释本发明， 并不用于限定本发明。
[0032] 实施例一：
[0033] 图 1示出了本发明实施例一提供的波束切换方法的实现流程， 所述实现流程详 述如下：
[0034] 在步骤 S101中， 获取当前波束的接收信号强度值和目标波束的接收信号强度值
[0035] 在本发明实施例中， 移动卫星终端在跨波束移动过程中， 获取当前波束的接收 信号强度值和目标波束的接收信号强度值， 移动卫星终端是移动用户通过移动 宽带卫星通信系统进行移动通信的终端， 通过所述移动卫星终端， 移动用户可 以在高速移动环境中获得语音、 图像、 数据等业务。 当移动卫星终端从当前波 束的中心区域向边界区域移动吋， 移动卫星终端获取的当前波束的接收信号强 度值逐渐减小。
[0036] 在步骤 S102中， 若所述目标波束的接收信号强度值大于所述当前波束的接收信 号强度值， 则将移动卫星终端的位置信息发送给关口站， 以使得所述关口站在
检测到所述移动卫星终端到达切换位置吋， 反馈指令信息；
[0037] 在本发明实施例中， 通过移动卫星终端的 GPS和 /或 BDS定位模块获得移动卫星 终端的位置信息， 并通过移动卫星终端的调制解调器将位置信息发送给关口站 。 所述关口站是后台设备管理系统， 主要负责呼叫管理、 切换控制以及与其他 网络系统的互联等， 例如： 提供移动宽带卫星通信系统与地面移动通信网的接 口， 实现互联； 控制移动卫星终端接入移动宽带卫星通信系统， 并保障移动卫 星终端在通信的过程中通信连接不中断。
[0038] 在本发明实施例中， 所述切换位置为当前波束与目标波束的交叠区域， 所述指 令信息包括但不限于目标波束的频点信息。
[0039] 在步骤 S103中， 接收所述关口站反馈的所述指令信息， 根据所述指令信息检测 目标波束的导频信号强度， 并将所述目标波束的导频信号强度发送给所述关口 站， 以使得所述关口站在检测到所述目标波束的导频信号强度符合预设指标要 求吋， 反馈切换指示信息；
[0040] 在本发明实施例中， 移动卫星终端通过调制解调器将所述目标波束的导频信号 强度发送给所述关口站。
[0041] 进一步的， 所述指令信息包括目标波束的频点信息， 所述根据所述指令信息检 测目标波束的导频信号强度包括：
[0042] 根据所述目标波束的频点信息， 在当前波束和目标波束的交叠区域中与所述目 标波束建立通信连接， 并检测目标波束的导频信号强度。
[0043] 在本发明实施例中， 根据所述目标波束的频点信息， 移动卫星终端在当前波束 和目标波束的交叠区域中与所述目标波束建立通信连接， 使移动卫星终端同吋 与当前波束和目标波束建立通信连接， 解决了移动卫星终端在进行波束切换吋 通信中断的问题。
[0044] 在步骤 S104中， 接收所述关口站反馈的所述切换指示信息， 根据所述切换指示 信息断幵与所述当前波束的通信连接。
[0045] 在本发明实施例中， 移动卫星终端根据所述切换指示信息断幵与所述当前波束 的通信连接后， 移动卫星终端与目标波束保持通信连接， 实现了无缝波束切换
[0046] 本发明实施例通过当移动卫星终端获取的目标波束的接收信号强度值大于当前 波束的接收信号强度值吋， 将移动卫星终端的位置信息发送给关口站， 以使得 关口站在检测到移动卫星终端到达切换位置吋， 进入切换准备阶段， 当目标波 束的导频信号强度符合预设指标要求吋， 移动卫星终端断幵与当前波束的通信 连接， 保证了波束切换的正确性， 实现了无缝波束切换， 有效解决了现有波束 切换技术导致通信中断的问题， 提高了移动用户的使用体验。
[0047] 实施例二：
[0048] 图 2示出了本发明实施例二提供的波束切换方法的实现流程， 所述实现流程详 述如下：
[0049] 在步骤 S201中， 接收移动卫星终端发送的位置信息， 在检测到所述移动卫星终 端到达切换位置吋， 向所述移动卫星终端发送指令信息， 以使得所述移动卫星 终端根据所述指令信息检测目标波束的导频信号强度， 并反馈所述目标波束的 导频信号强度；
[0050] 在本发明实施例中， 关口站接收移动卫星终端发送的位置信息， 所述位置信息 通过所述移动卫星终端的 GPS和 /或 BDS定位模块获得， 在检测到所述移动卫星 终端到达当前波束与目标波束的交叠区域吋， 向所述移动卫星终端发送指令信 息， 所述指令信息包括但不限于目标波束的频点信息。
[0051] 在步骤 S202中， 接收所述移动卫星终端反馈的所述目标波束的导频信号强度， 在检测到所述目标波束的导频信号强度符合预设指标要求吋， 向所述移动卫星 终端发送切换指示信息， 以使得所述移动卫星终端根据所述切换指示信息断幵 与当前波束的通信连接。
[0052] 进一步的， 所述在检测到所述目标波束的导频信号强度符合预设指标要求吋， 向所述移动卫星终端发送切换指示信息包括：
[0053] 在检测到所述目标波束的导频信号强度大于预设门限值， 且所述目标波束的导 频信号强度与所述预设门限值的差值大于滞后余量吋， 向所述移动卫星终端发 送切换指示信息。
[0054] 在本发明实施例中， 所述预设门限值的设置与要求波束切换的切换次数有关， 若要求波束切换的切换次数多， 则将预设门限值设置低点， 若要求波束切换的
切换次数少， 则将预设门限值设置高点。 所述滞后余量是用于说明目标波束的 导频信号强度与预设门限值的差距， 设置滞后余量可避免乒乓效应和重复来回 切换， 较佳的， 滞后余量为 0.2dBm。
[0055] 本发明实施例通过关口站在检测到移动卫星终端到达切换位置吋， 进入切换准 备阶段， 并向移动卫星终端发送指令信息， 以使得移动卫星终端根据指令信息 与目标波束建立通信连接， 当目标波束的导频信号强度符合预设指标要求吋， 关口站向移动卫星终端发送切换指示信息， 以使得移动卫星终端断幵与当前波 束的通信连接， 保证了波束切换的正确性， 实现了无缝波束切换， 有效解决了 现有波束切换技术导致通信中断的问题， 提高了移动用户的使用体验。
[0056] 实施例三：
[0057] 图 3示出了本发明实施例三提供的波束切换方法的具体实现流程， 所述实现流 程详述如下：
[0058] 在步骤 S301中， 移动终端获取当前波束的接收信号强度值和目标波束的接收信 号强度值；
[0059] 在步骤 S302中， 移动卫星终端检测目标波束的接收信号强度值是否大于当前波 束的接收信号强度值；
[0060] 在本发明实施例中， 移动卫星终端检测目标波束的接收信号强度值是否大于当 前波束的接收信号强度值， 若是， 执行步骤 S303， 否， 执行步骤 S301。
[0061] 在步骤 S303中， 移动卫星终端发送位置信息至关口站；
[0062] 在步骤 S304中， 关口站检测移动卫星终端是否到达切换位置；
[0063] 在本发明实施例中， 关口站检测移动卫星终端是否到达切换位置， 若是， 执行 步骤 S305， 否， 执行步骤 S303。
[0064] 在步骤 S305中， 关口站发送指令信息至移动卫星终端；
[0065] 在步骤 S306中， 移动卫星终端根据指令信息检测目标波束的导频信号强度， 并 将目标波束的导频信号强度发送至关口站；
[0066] 在步骤 S307中， 关口站检测目标波束的导频信号强度是否符合预设指标要求； [0067] 在本发明实施例中， 关口站检测目标波束的导频信号强度是否符合预设指标要 求， 若是， 执行步骤 S308， 否， 执行步骤 S306。
[0068] 在步骤 S308中， 关口站发送切换指示信息至移动卫星终端；
[0069] 在步骤 S309中， 移动卫星终端根据切换指示信息断幵与当前波束的通信连接。
[0070] 本发明实施例当移动卫星终端获取的目标波束的接收信号强度值大于当前波束 的接收信号强度值吋， 通过关口站检测移动卫星终端的位置， 当检测到移动卫 星终端到达切换位置吋， 进入切换准备阶段并向移动卫星终端发送指令信息， 移动卫星终端根据指令信息与目标波束建立通信连接， 并将检测到的目标波束 的导频信号强度发送给关口站， 当目标波束的导频信号强度符合预设指标要求 吋， 移动卫星终端断幵与当前波束的通信连接， 保证了波束切换的正确性， 实 现了无缝波束切换， 有效解决了现有波束切换技术导致通信中断的问题， 提高 了移动用户的使用体验。
[0071] 实施例四：
[0072] 图 4示出了本发明实施例四提供的移动卫星终端的组成示意图， 为了便于说明
， 仅示出了与本发明实施例相关的部分， 详述如下：
[0073] 获取模块 41， 用于获取当前波束的接收信号强度值和目标波束的接收信号强度 值；
[0074] 位置信息发送模块 42， 用于若所述目标波束的接收信号强度值大于所述当前波 束的接收信号强度值， 则将移动卫星终端的位置信息发送给关口站， 以使得所 述关口站在检测到所述移动卫星终端到达切换位置吋， 反馈指令信息；
[0075] 指令信息接收模块 43， 用于接收所述关口站反馈的所述指令信息， 根据所述指 令信息检测目标波束的导频信号强度， 并将所述目标波束的导频信号强度发送 给所述关口站， 以使得所述关口站在检测到所述目标波束的导频信号强度符合 预设指标要求吋， 反馈切换指示信息；
[0076] 进一步的， 所述指令信息包括目标波束的频点信息， 所述指令信息接收模块 43 用于：
[0077] 根据所述目标波束的频点信息， 在当前波束和目标波束的交叠区域中与所述目 标波束建立通信连接， 并检测目标波束的导频信号强度。
[0078] 指示信息接收模块 44， 用于接收所述关口站反馈的所述切换指示信息， 根据所 述切换指示信息断幵与所述当前波束的通信连接。
[0079] 本发明实施例提供的移动卫星终端可以使用在前述对应的方法实施例一中， 详 情参见上述实施例一的描述， 在此不再赘述。
[0080] 本发明实施例通过当移动卫星终端获取的目标波束的接收信号强度值大于当前 波束的接收信号强度值吋， 将移动卫星终端的位置信息发送给关口站， 以使得 关口站在检测到移动卫星终端到达切换位置吋， 进入切换准备阶段， 当目标波 束的导频信号强度符合预设指标要求吋， 移动卫星终端断幵与当前波束的通信 连接， 保证了波束切换的正确性， 实现了无缝波束切换， 有效解决了现有波束 切换技术导致通信中断的问题， 提高了移动用户的使用体验。
[0081] 实施例五：
[0082] 图 5示出了本发明实施例五提供的关口站的组成示意图， 为了便于说明， 仅示 出了与本发明实施例相关的部分， 详述如下：
[0083] 位置信息接收模块 51， 用于接收移动卫星终端发送的位置信息， 在检测到所述 移动卫星终端到达切换位置吋， 向所述移动卫星终端发送指令信息， 以使得所 述移动卫星终端根据所述指令信息检测目标波束的导频信号强度， 并反馈所述 目标波束的导频信号强度；
[0084] 信号强度接收模块 52， 用于接收所述移动卫星终端反馈的所述目标波束的导频 信号强度， 在检测到所述目标波束的导频信号强度符合预设指标要求吋， 向所 述移动卫星终端发送切换指示信息， 以使得所述移动卫星终端根据所述切换指 示信息断幵与当前波束的通信连接。
[0085] 进一步的， 所述信号强度接收模块 52用于：
[0086] 在检测到所述目标波束的导频信号强度大于预设门限值， 且所述目标波束的导 频信号强度与所述预设门限值的差值大于滞后余量吋， 向所述移动卫星终端发 送切换指示信息。
[0087] 本发明实施例提供的关口站可以使用在前述对应的方法实施例二中， 详情参见 上述实施例二的描述， 在此不再赘述。
[0088] 所述领域的技术人员可以清楚地了解到， 为描述的方便和简洁， 仅以上述各功 能模块的划分进行举例说明， 实际应用中， 可以根据需要而将上述功能分配由 不同的功能模块完成， 即所述装置的内部结构划分成不同的功能模块， 上述功
能模块既可以采用硬件的形式实现， 也可以采用软件的形式实现。 另外， 各功 能模块的具体名称也只是为了便于相互区别， 并不用于限制本申请的保护范围
[0089] 综上所述， 本发明实施例当移动卫星终端获取的目标波束的接收信号强度值大 于当前波束的接收信号强度值吋， 通过关口站检测移动卫星终端的位置， 当移 动卫星终端到达切换位置吋， 进入切换准备阶段并向移动卫星终端发送指令信 息， 移动卫星终端根据指令信息与目标波束建立通信连接并将检测到的目标波 束的导频信号强度发送给关口站， 当目标波束的导频信号强度符合预设指标要 求吋， 移动卫星终端断幵与当前波束的通信连接， 保证了波束切换的正确性， 实现了无缝波束切换， 有效解决了现有波束切换技术导致通信中断的问题， 提 高了移动用户的使用体验。
[0090] 本领域普通技术人员还可以理解， 实现上述实施例方法中的全部或部分步骤是 可以通过程序来指令相关的硬件来完成， 所述的程序可以在存储于一计算机可 读取存储介质中， 所述的存储介质， 包括 ROM/RAM、 磁盘、 光盘等。
[0091] 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明的 精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保 护范围之内。
Claims
[权利要求 1] 一种波束切换的方法， 其特征在于， 所述方法包括：
获取当前波束的接收信号强度值和目标波束的接收信号强度值； 若所述目标波束的接收信号强度值大于所述当前波束的接收信号强度 值， 则将移动卫星终端的位置信息发送给关口站， 以使得所述关口站 在检测到所述移动卫星终端到达切换位置吋， 反馈指令信息； 接收所述关口站反馈的所述指令信息， 根据所述指令信息检测目标波 束的导频信号强度， 并将所述目标波束的导频信号强度发送给所述关 口站， 以使得所述关口站在检测到所述目标波束的导频信号强度符合 预设指标要求吋， 反馈切换指示信息；
接收所述关口站反馈的所述切换指示信息， 根据所述切换指示信息断 幵与所述当前波束的通信连接。
[权利要求 2] 根据权利要求 1所述的方法， 其特征在于， 所述指令信息包括目标波 束的频点信息， 所述根据所述指令信息检测目标波束的导频信号强度 包括：
根据所述目标波束的频点信息， 在当前波束和目标波束的交叠区域中 与所述目标波束建立通信连接， 并检测目标波束的导频信号强度。
[权利要求 3] —种波束切换的方法， 其特征在于， 所述方法包括：
接收移动卫星终端发送的位置信息， 在检测到所述移动卫星终端到达 切换位置吋， 向所述移动卫星终端发送指令信息， 以使得所述移动卫 星终端根据所述指令信息检测目标波束的导频信号强度， 并反馈所述 目标波束的导频信号强度；
接收所述移动卫星终端反馈的所述目标波束的导频信号强度， 在检测 到所述目标波束的导频信号强度符合预设指标要求吋， 向所述移动卫 星终端发送切换指示信息， 以使得所述移动卫星终端根据所述切换指 示信息断幵与当前波束的通信连接。
[权利要求 4] 根据权利要求 3所述的方法， 其特征在于， 所述在检测到所述目标波 束的导频信号强度符合预设指标要求吋， 向所述移动卫星终端发送切
换指示信息包括：
在检测到所述目标波束的导频信号强度大于预设门限值， 且所述目标 波束的导频信号强度与所述预设门限值的差值大于滞后余量吋， 向所 述移动卫星终端发送切换指示信息。
[权利要求 5] —种移动卫星终端， 其特征在于， 所述移动卫星终端包括：
获取模块、 位置信息发送模块、 指令信息接收模块以及指示信息接收 模块；
所述获取模块， 用于获取当前波束的接收信号强度值和目标波束的接 收信号强度值；
所述位置信息发送模块， 用于若所述目标波束的接收信号强度值大于 所述当前波束的接收信号强度值， 则将移动卫星终端的位置信息发送 给关口站， 以使得所述关口站在检测到所述移动卫星终端到达切换位 置吋， 反馈指令信息；
所述指令信息接收模块， 用于接收所述关口站反馈的所述指令信息， 根据所述指令信息检测目标波束的导频信号强度， 并将所述目标波束 的导频信号强度发送给所述关口站， 以使得所述关口站在检测到所述 目标波束的导频信号强度符合预设指标要求吋， 反馈切换指示信息； 所述指示信息接收模块， 用于接收所述关口站反馈的所述切换指示信 息， 根据所述切换指示信息断幵与所述当前波束的通信连接。
[权利要求 6] 根据权利要求 5所述的移动卫星终端， 其特征在于， 所述指令信息包 括目标波束的频点信息， 所述指令信息接收模块用于：
根据所述目标波束的频点信息， 在当前波束和目标波束的交叠区域中 与所述目标波束建立通信连接， 并检测目标波束的导频信号强度。
[权利要求 7] —种关口站， 其特征在于， 所述关口站包括：
位置信息接收模块， 用于接收移动卫星终端发送的位置信息， 在检测 到所述移动卫星终端到达切换位置吋， 向所述移动卫星终端发送指令 信息， 以使得所述移动卫星终端根据所述指令信息检测目标波束的导 频信号强度， 并反馈所述目标波束的导频信号强度；
信号强度接收模块， 用于接收所述移动卫星终端反馈的所述目标波束 的导频信号强度， 在检测到所述目标波束的导频信号强度符合预设指 标要求吋， 向所述移动卫星终端发送切换指示信息， 以使得所述移动 卫星终端根据所述切换指示信息断幵与当前波束的通信连接。
[权利要求 8] 根据权利要求 7所述的关口站， 其特征在于， 所述信号强度接收模块 用于：
在检测到所述目标波束的导频信号强度大于预设门限值， 且所述目标 波束的导频信号强度与所述预设门限值的差值大于滞后余量吋， 向所 述移动卫星终端发送切换指示信息。
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| CN115765827A (zh) * | 2022-09-28 | 2023-03-07 | 航天恒星科技有限公司 | 高通量卫星通信点波束无缝切换方法及系统 |
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| CN111989872B (zh) * | 2018-04-16 | 2023-10-03 | 索尼公司 | 无线通信设备和方法 |
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