CN115396004A - Low-earth-orbit satellite non-measurement report autonomous prediction switching method and equipment - Google Patents
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Abstract
Description
Translated fromChinese技术领域technical field
本申请涉及卫星通信技术领域，尤其涉及一种低轨卫星无测量报告自主预测切换方法及设备。The present application relates to the technical field of satellite communication, and in particular to a method and device for autonomously predicting and switching low-orbit satellites without measurement reports.
背景技术Background technique
当移动用户处于通话状态时，如果用户从一个小区移动到另一个小区，为保证通话的连续，系统要对该移动台的连接控制也从一个小区转移到另一小区。将处于正在通话的移动台转移到新的业务信道(新小区)的过程称为切换。When a mobile user is in a call state, if the user moves from one cell to another, in order to ensure the continuity of the call, the system also transfers the connection control of the mobile station from one cell to another. The process of transferring a mobile station in communication to a new traffic channel (new cell) is called handover.
切换的操作不仅包括识别新的小区，而且需要分配给移动台在新小区的语音信道和控制信道。现有的切换技术分为三种：硬切换、软切换、接力切换。The operation of handover not only includes identifying a new cell, but also needs to allocate voice channels and control channels in the new cell to the mobile station. The existing handover technologies are divided into three types: hard handover, soft handover, and relay handover.
但传统硬切换掉话率高、切换成功率低。软切换需要占用的信道资源多、信令复杂、下行链路干扰大。接力切换在低轨卫星场景下，由于卫星移动速度快，波束切换频繁，所以接力切换有巨大的信令消耗。另外，接力切换的关键点在于测量，测量后由用户进行测量报告上传，由于低轨卫星高度较高，传输时延大，卫星位置变化快，因此测量报告的准确性降低。在地面常用的测量指标如信号强度在卫星场景下变化不明显，不适用于低轨卫星。However, traditional hard switching has a high call drop rate and a low switching success rate. Soft handover needs to occupy many channel resources, complex signaling, and large downlink interference. Relay handover In the low-orbit satellite scenario, due to the fast moving speed of the satellite and frequent beam switching, the relay handover has huge signaling consumption. In addition, the key point of the relay handover is the measurement. After the measurement, the user uploads the measurement report. Due to the high altitude of the low-orbit satellite, the transmission delay is large, and the satellite position changes quickly, the accuracy of the measurement report is reduced. Measurement indicators commonly used on the ground, such as signal strength, do not change significantly in satellite scenarios, and are not suitable for low-orbit satellites.
发明内容Contents of the invention
本申请提供了一种低轨卫星无测量报告自主预测切换方法及设备，解决了现有切换的技术中信令开销大、测量报告准确性低、传播时延大等问题。The present application provides a low-orbit satellite independent prediction switching method and equipment without measurement reports, which solves the problems of high signaling overhead, low measurement report accuracy, and large propagation delay in the existing switching technology.
一种低轨卫星无测量报告自主预测切换方法，包括：A low-orbit satellite non-measurement report autonomous prediction switching method, comprising:
通过源端向目标端发送切换预测报告，所述目标端根据所述切换预测报告进行资源配置；Sending a handover prediction report to the target end through the source end, and the target end performs resource allocation according to the handover prediction report;
所述目标端将资源配置信息发送至所述源端，所述源端根据所述资源配置信息将切换报告下发至用户终端UE；The target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information;
所述UE根据所述切换报告完成信道切换。The UE completes channel switching according to the switching report.
在本申请的一种实施例中，在所述根据所述切换报告完成信道切换后，所述方法还包括：所述UE将切换完成信息发送至目标端，所述目标端根据所述切换预测报告执行相应操作。In an embodiment of the present application, after the channel switching is completed according to the switching report, the method further includes: the UE sends switching completion information to the target end, and the target end The report takes the appropriate action.
在本申请的一种实施例中，所述通过源端向目标端发送切换预测报告，所述目标端根据所述切换预测报告进行资源配置，具体包括：通过源波束向卫星发送第一切换预测报告，所述第一切换预测报告包括用户的位置信息；卫星的用户切换管理系统接收到所述第一切换预测报告后，根据所述位置信息、卫星星历和用户运动信息进行预测分析；所述用户切换管理系统根据预测分析结果向目标波束群发送切换请求报告，所述目标波束群根据所述切换请求报告进行信道资源配置，所述切换请求报告包括最快切换时刻。In an embodiment of the present application, sending the handover prediction report to the target end through the source end, and the target end performs resource allocation according to the handover prediction report, specifically includes: sending the first handover prediction report to the satellite through the source beam report, the first handover prediction report includes the location information of the user; after receiving the first handover prediction report, the satellite user handover management system performs prediction analysis according to the location information, satellite ephemeris and user motion information; The user handover management system sends a handover request report to the target beam group according to the prediction and analysis results, and the target beam group configures channel resources according to the handover request report, and the handover request report includes the fastest handover time.
在本申请的一种实施例中，所述所述目标端将资源配置信息发送至所述源端，所述源端根据所述资源配置信息将切换报告下发至用户终端UE，具体包括：所述目标波束群将资源资源配置的信息发送至所述用户切换管理系统；所述用户切换管理系统收到所述资源配置的信息后，确定目标波束群以及所述目标波束群中最晚资源释放时刻和所述最快切换时刻之间的时刻，作为第一切换报告的下发时刻；在所述下发时刻由用户切换管理系统向用户终端UE发送第一切换报告。In an embodiment of the present application, the target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information, specifically including: The target beam group sends resource configuration information to the user switching management system; after receiving the resource configuration information, the user switching management system determines the target beam group and the latest resource in the target beam group The time between the release time and the fastest switching time is used as the sending time of the first handover report; at the sending time, the user handover management system sends the first handover report to the user terminal UE.
在本申请的一种实施例中，所述通过源端向目标端发送切换预测报告，所述目标端根据所述切换预测报告进行资源配置，具体包括：通过源卫星的用户切换管理系统在上一次切换完成后获得用户的位置信息，根据所述位置信息向目标卫星群发送第二切换预测报告；所述第二切换预测报告包括最快切换时刻；所述目标卫星群根据所述第二切换预测报告判断在所述最快切换时刻前能够为用户进行资源配置，则为用户进行资源配置。In an embodiment of the present application, the sending a handover prediction report from the source terminal to the target terminal, and the target terminal performs resource allocation according to the handover prediction report, specifically includes: using the user handover management system of the source satellite on the Obtain the position information of the user after a handover is completed, and send a second handover forecast report to the target satellite group according to the position information; the second handover forecast report includes the fastest handover time; If the prediction report judges that resource allocation can be performed for the user before the fastest switching time, resource allocation is performed for the user.
在本申请的一种实施例中，所述所述目标端将资源配置信息发送至所述源端，所述源端根据所述资源配置信息将切换报告下发至用户终端UE，具体包括：所述目标卫星群将资源资源配置的信息发送至所述源卫星，所述资源配置信息包括所述目标卫星群的资源释放时刻；所述源卫星的用户切换管理系统根据所述资源释放时刻中的最晚资源释放时刻和所述最快切换时刻之间的时刻作为第二切换报告的下发时刻；在所述下发时刻由所述用户切换管理系统向用户终端UE发送第二切换报告。In an embodiment of the present application, the target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information, specifically including: The target satellite group sends resource configuration information to the source satellite, and the resource configuration information includes the resource release time of the target satellite group; the user switching management system of the source satellite according to the resource release time The time between the latest resource release time and the fastest handover time is used as the sending time of the second handover report; at the sending time, the user handover management system sends the second handover report to the user terminal UE.
在本申请的一种实施例中，所述UE将切换完成信息发送至目标端，所述目标端根据所述切换完成信息执行相应操作，具体包括：所述UE将第一切换完成报告发送至目标波束群，所述目标波束群中切换成功的目标波束根据所述切换完成报告向卫星的用户切换管理系统发送切换完成报告；所述用户切换管理系统根据所述切换完成报告向源波束发送资源释放报告，所述源波束根据所述资源释放报告进行资源释放；并将所述目标波束群中未切换成功的目标波束进行资源释放。In an embodiment of the present application, the UE sends the handover completion information to the target end, and the target end performs corresponding operations according to the handover completion information, which specifically includes: the UE sends the first handover completion report to The target beam group, the target beams in the target beam group that are switched successfully send a handover completion report to the user handover management system of the satellite according to the handover completion report; the user handover management system sends resource beams to the source beam according to the handover completion report A release report, where the source beam releases resources according to the resource release report; and releases resources for target beams in the target beam group that have not been switched successfully.
在本申请的一种实施例中，所述UE将切换完成信息发送至目标端，所述目标端根据所述切换完成信息执行相应操作，具体包括：所述UE将第一切换完成报告发送至目标卫星群，所述目标卫星群根据所述切换完成报告向地面核心网发起更新承载上下文的请求；所述核心网响应所述请求与所述目标卫星群中连接成功的目标卫星建立连接，当建立完成后由所述目标卫星向源卫星发送资源释放报告；并将所述目标卫星群中未切换成功的目标卫星进行资源释放。In an embodiment of the present application, the UE sends the handover completion information to the target end, and the target end performs corresponding operations according to the handover completion information, which specifically includes: the UE sends the first handover completion report to The target satellite group, the target satellite group initiates a request to the ground core network to update the bearer context according to the handover completion report; the core network responds to the request to establish a connection with the target satellite in the target satellite group that is successfully connected, when After the establishment is completed, the target satellite sends a resource release report to the source satellite; and releases the resources of the target satellites in the target satellite group that have not been handed over successfully.
在本申请的一种实施例中，所述卫星的用户切换管理系统接收到所述第一切换预测报告后，根据所述位置信息、卫星星历和用户运动信息进行预测分析，具体包括：确定用户当前位置为位置信息，以所述用户位置为圆心，根据移动半径预测用户的移动位置，作为用户运动信息；所述移动半径根据卫星波束切换间隔与陆地高铁速度确定；所述卫星的用户切换管理系统接收到所述第一切换预测报告后，判断卫星的移动方向，根据卫星移动方向以及用户的所述用户运动信息预测用户接入的波束；根据预测接入的波束和所述卫星移动方向确定最快切换时刻和最慢切换时刻。In one embodiment of the present application, after receiving the first handover prediction report, the satellite user switching management system performs prediction analysis according to the position information, satellite ephemeris and user movement information, specifically including: determining The current position of the user is the position information, with the user position as the center of the circle, the user's mobile position is predicted according to the moving radius as the user's motion information; the moving radius is determined according to the satellite beam switching interval and the speed of the land high-speed rail; the satellite user switching After receiving the first handover prediction report, the management system judges the moving direction of the satellite, predicts the beam accessed by the user according to the moving direction of the satellite and the user motion information of the user; Determine the fastest switching moment and the slowest switching moment.
在本申请的一种实施例中，所述目标端根据所述切换预测报告进行资源配置，具体包括：所述切换预测报告中包括最快切换时刻；判断所述目标端是否可在所述最快切换时刻前进行信道资源分配，若是，则进行信道资源配置；若否，判断所述目标端是否可在所述最快切换时刻前释放信道资源；若是，向卫星返回当前信道的资源释放时刻信息；在所述目标端的原连接资源释放后，进行资源配置。In an embodiment of the present application, the target end performs resource allocation according to the handover prediction report, which specifically includes: the handover prediction report includes the fastest handover time; judging whether the target end can Perform channel resource allocation before the fast switching time, if so, then perform channel resource allocation; if not, judge whether the target can release channel resources before the fastest switching time; if so, return the resource release time of the current channel to the satellite Information; resource configuration is performed after the original connection resources of the target end are released.
一种低轨卫星无测量报告自主预测切换设备，包括：A low-orbit satellite non-measurement report autonomous prediction switching equipment, including:
至少一个处理器；以及，at least one processor; and,
与所述至少一个处理器通过总线通信连接的存储器；其中，A memory connected to the at least one processor through bus communication; wherein,
所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器执行：The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform:
通过源端向目标端发送切换预测报告，所述目标端根据所述切换预测报告进行资源配置；Sending a handover prediction report to the target end through the source end, and the target end performs resource allocation according to the handover prediction report;
所述目标端将资源配置信息发送至所述源端，所述源端根据所述资源配置信息将切换报告下发至用户终端UE；The target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information;
所述UE根据所述切换报告完成信道切换。The UE completes channel switching according to the switching report.
一种非易失性存储介质，存储有计算机可执行指令，所述计算机可执行指令由处理器执行，以实现下述步骤：A non-volatile storage medium stores computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the following steps:
通过源端向目标端发送切换预测报告，所述目标端根据所述切换预测报告进行资源配置；Sending a handover prediction report to the target end through the source end, and the target end performs resource allocation according to the handover prediction report;
所述目标端将资源配置信息发送至所述源端，所述源端根据所述资源配置信息将切换报告下发至用户终端UE；The target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information;
所述UE根据所述切换报告完成信道切换。The UE completes channel switching according to the switching report.
本申请提供了一种低轨卫星无测量报告自主预测切换方法及设备，至少包括以下有益效果：通过根据卫星星历确定其轨道位置及周期性，由卫星根据用户位置发出切换请求，可以减少频繁切换带来的信令损耗以及卫星切换中由于卫星高速移动带来的切换信令开销，也可以避免低轨卫星场景下的测量报告事件选择问题。与传统方案相比，本申请在切换过程中减少了用户上传测量报告过程以及基站下发测量配置过程，在物理传播时延上缩短为原来的五分之二。通过在切换信令中插入用户位置信息为卫星提供预测依据，引入用户切换管理系统计算最快切换时刻，最慢切换时刻等量，提高了系统的可靠性。The application provides a low-orbit satellite non-measurement report autonomous prediction switching method and equipment, at least including the following beneficial effects: by determining its orbital position and periodicity according to the satellite ephemeris, the satellite sends a switching request according to the user's position, which can reduce frequent The signaling loss caused by handover and the handover signaling overhead caused by the high-speed movement of satellites during satellite handover can also avoid the problem of measurement report event selection in low-orbit satellite scenarios. Compared with the traditional solution, this application reduces the process of user uploading measurement report and base station sending measurement configuration process in the handover process, and shortens the physical propagation delay to two-fifths of the original. By inserting the user position information into the switching signaling to provide prediction basis for the satellite, and introducing the user switching management system to calculate the fastest switching time and the slowest switching time equivalent, the reliability of the system is improved.
附图说明Description of drawings
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:
图1为本申请实施例提供的一种低轨卫星无测量报告自主预测切换方法步骤示意图；Fig. 1 is a schematic diagram of the steps of a low-orbit satellite non-measurement report autonomous prediction switching method provided by the embodiment of the present application;
图2为本申请实施例提供的星内波束切换信令交互流程示意图；FIG. 2 is a schematic diagram of an intra-satellite beam switching signaling interaction process provided by an embodiment of the present application;
图3a为本申请实施例提供的卫星波束移动示意图；Figure 3a is a schematic diagram of satellite beam movement provided by the embodiment of the present application;
图3b为本申请实施例提供的卫星波束沿方向一移动切换时刻示意图；Fig. 3b is a schematic diagram of the satellite beam moving along direction one and switching time provided by the embodiment of the present application;
图3c为本申请实施例提供的卫星波束沿方向二移动切换时刻示意图；Fig. 3c is a schematic diagram of the switching time of the satellite beam moving along the second direction provided by the embodiment of the present application;
图4为本申请实施例提供的星间波束切换信令交互流程示意图；FIG. 4 is a schematic diagram of an inter-satellite beam switching signaling interaction process provided by an embodiment of the present application;
图5为本申请实施例提供的一种低轨卫星无测量报告自主预测切换设备组成图。Fig. 5 is a composition diagram of a low-orbit satellite non-measurement report autonomous prediction switching device provided by the embodiment of the present application.
具体实施方式Detailed ways
为了使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例对本申请进行清楚、完整的描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。In order to make the purpose, technical solution and advantages of the present application clearer, the following will give a clear and complete description of the present application in conjunction with specific embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
需要说明的是，本领域普通技术人员显式地和隐式地理解的是，本申请所描述的实施例在不冲突的情况下，可以与其它实施例相结合。除非另作定义，本申请所涉及的技术术语或者科学术语应当为本申请所属技术领域内具有一般技能的人士所理解的通常意义。本申请所涉及的“一”、“一个”、“一种”、“该”等类似词语并不表示数量限制，可表示单数或复数。本申请所涉及的术语“包括”、“包含”、“具有”以及它们任何变形，意图在于覆盖不排他的包含；本申请所涉及的术语“第一”、“第二”、“第三”等仅仅是区别类似的对象，不代表针对对象的特定排序。It should be noted that those of ordinary skill in the art understand explicitly and implicitly that the embodiments described in this application can be combined with other embodiments under the condition of no conflict. Unless otherwise defined, the technical terms or scientific terms involved in the application shall have the usual meanings understood by those with ordinary skill in the technical field to which the application belongs. Words such as "a", "an", "an" and "the" involved in this application do not indicate a limitation on quantity, and may indicate singular or plural numbers. The terms "comprising", "comprising", "having" and any variations thereof involved in this application are intended to cover non-exclusive inclusion; the terms "first", "second", and "third" involved in this application Etc is only used to distinguish similar objects and does not represent a specific ordering of objects.
在现有技术中，硬切换是发生在不同频率小区间的一种切换模式，FDMA(Frequency Division Multiple Access)和TDMA(Time Division Multiple Access)系统支持硬切换。硬切换过程是：当用户终端(User Equipment，UE)从源小区移动到目标小区时，因源小区与目标小区的载频不同，UE进入目标小区后就与源小区信道断开，经理同步过程，UE再自动向目标小区的新频率调谐，与目标小区联系，建立新的信道，开始新频率下的上下行数据通信，最后完成从源小区到目标小区的切换。In the prior art, hard handover is a handover mode that occurs between cells of different frequencies, and FDMA (Frequency Division Multiple Access) and TDMA (Time Division Multiple Access) systems support hard handover. The hard handover process is: when the user terminal (User Equipment, UE) moves from the source cell to the target cell, because the carrier frequency of the source cell and the target cell are different, the channel of the UE will be disconnected from the source cell after entering the target cell, and the manager synchronization process , the UE automatically tunes to the new frequency of the target cell, contacts the target cell, establishes a new channel, starts uplink and downlink data communication on the new frequency, and finally completes the handover from the source cell to the target cell.
软切换是发生在相同频率不同小区之间的一种切换模式，由于切换是在同频小区间进行，当UE移动到多个小区覆盖交界区域处于切换状态时，因频率相同，UE可同时和多个小区保持联系，接收这些小区的信道质量报告，并与系统指定门限比较，取最佳值对应的小区作为目标小区切换，这是UE才将与源小区的联系信道切断，完成UE从源小区到目标小区的切换。Soft handover is a handover mode that occurs between different cells of the same frequency. Since the handover is performed between cells of the same frequency, when the UE moves to the intersection area covered by multiple cells and is in the handover state, because the frequency is the same, the UE can simultaneously and Multiple cells keep in touch, receive the channel quality reports of these cells, compare them with the threshold specified by the system, and take the cell corresponding to the best value as the target cell handover. Only then will the UE cut off the communication channel with the source cell, and complete the UE from the source cell. Cell to target cell handover.
接力切换需要UE对本小区基站和相邻小区基站的参考信号强度进行测量，并上报给基站，基站对测量信号进行判决，如果判决的结果是需要切换，基站会先与邻小区通信请求邻小区预先准备好无限资源以及终端的上行文，等邻小区准备好资源和终端的上下文后，就切断当前小区的资源，由邻小区接管对该终端的控制。Relay handover requires the UE to measure the reference signal strength of the base station of the local cell and the base station of the adjacent cell, and report it to the base station. The base station makes a judgment on the measured signal. Prepare unlimited resources and the uplink of the terminal, and wait for the adjacent cell to prepare the resource and the context of the terminal, then cut off the resources of the current cell, and let the adjacent cell take over the control of the terminal.
但传统硬切换掉话率高、切换成功率低。软切换需要占用的信道资源多、信令复杂、下行链路干扰大。接力切换在低轨卫星场景下，由于卫星移动速度快，波束切换频繁，所以接力切换有巨大的信令消耗。另外，接力切换的关键点在于测量，测量后由用户进行测量报告上传，由于低轨卫星高度较高，传输时延大，卫星位置变化快，因此测量报告的准确性降低。在地面常用的测量指标如信号强度在卫星场景下变化不明显，不适用于低轨卫星。However, traditional hard switching has a high call drop rate and a low switching success rate. Soft handover needs to occupy many channel resources, complex signaling, and large downlink interference. Relay handover In the low-orbit satellite scenario, due to the fast moving speed of the satellite and frequent beam switching, the relay handover has huge signaling consumption. In addition, the key point of the relay handover is the measurement. After the measurement, the user uploads the measurement report. Due to the high altitude of the low-orbit satellite, the transmission delay is large, and the satellite position changes quickly, the accuracy of the measurement report is reduced. Measurement indicators commonly used on the ground, such as signal strength, do not change significantly in satellite scenarios, and are not suitable for low-orbit satellites.
对于低轨卫星切换，可通过其固定的轨道位置及周期性，由卫星基于用户位置发出切换请求，可以减少频繁切换带来的信令损耗，也可以避免低轨卫星场景下的测量报告事件选择问题。下面进行具体说明。For low-orbit satellite switching, through its fixed orbital position and periodicity, the satellite sends a switching request based on the user's position, which can reduce the signaling loss caused by frequent switching, and can also avoid the selection of measurement report events in low-orbit satellite scenarios question. A detailed description will be given below.
图1为本申请实施例提供的一种低轨卫星无测量报告自主预测切换方法及设备的步骤示意图，可以包括以下步骤：Fig. 1 is a schematic diagram of the steps of a low-orbit satellite non-measurement report autonomous prediction switching method and equipment provided by the embodiment of the present application, which may include the following steps:
S110：通过源端向目标端发送切换预测报告，目标端根据切换预测报告进行资源配置。S110: The source end sends a handover prediction report to the target end, and the target end configures resources according to the handover prediction report.
S120：目标端将资源配置信息发送至源端，源端根据资源配置信息将切换报告下发至用户终端UE。S120: The target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information.
S130：UE根据切换报告完成信道切换。S130: The UE completes channel switching according to the switching report.
在本申请的一种实施例中，在根据切换报告完成信道切换后，UE将切换完成信息发送至目标端，目标端根据切换预测报告执行相应操作。In an embodiment of the present application, after the channel switching is completed according to the handover report, the UE sends handover completion information to the target end, and the target end performs corresponding operations according to the handover prediction report.
如图2所示为星内波束切换信令交互流程示意图。在本申请的一种实施例中，通过源端向目标端发送切换预测报告，目标端根据切换预测报告进行资源配置，具体包括：通过源波束向卫星发送第一切换预测报告，第一切换预测报告包括用户的位置信息；卫星的用户切换管理系统接收到第一切换预测报告后，根据位置信息、卫星星历和用户运动信息进行预测分析；用户切换管理系统根据预测分析结果向目标波束群发送切换请求报告，目标波束群根据切换请求报告进行信道资源配置，切换请求报告包括最快切换时刻。FIG. 2 is a schematic diagram of an intra-satellite beam switching signaling interaction process. In an embodiment of the present application, the source end sends a handover prediction report to the target end, and the target end performs resource allocation according to the handover prediction report, which specifically includes: sending the first handover prediction report to the satellite through the source beam, and the first handover prediction report The report includes the user's location information; after receiving the first handover prediction report, the satellite user switching management system performs prediction analysis based on the location information, satellite ephemeris and user movement information; the user switching management system sends the target beam group according to the prediction analysis results In the handover request report, the target beam group configures channel resources according to the handover request report, and the handover request report includes the fastest handover time.
具体地，第一切换预测报告为在星内波束切换信令交互时发送。在完成上一次信道切换时，源波束将第一切换预测报告发送到卫星。第一切换预测报告中包括用户ID以及用户的位置信息。如表1所示：Specifically, the first switching prediction report is sent when intra-satellite beam switching signaling is exchanged. Upon completion of the last channel switch, the source beam sends a first switch prediction report to the satellite. The first handover prediction report includes the user ID and the location information of the user. As shown in Table 1:
表1Table 1
在本申请的一种实施例中，确定用户当前位置为位置信息，以用户位置为圆心，根据移动半径预测用户的移动位置，作为用户运动信息；移动半径根据卫星波束切换间隔与陆地高铁速度确定；卫星的用户切换管理系统接收到第一切换预测报告后，判断卫星的移动方向，根据卫星移动方向以及用户的用户运动信息预测用户接入的波束；根据预测接入的波束和卫星移动方向确定最快切换时刻和最慢切换时刻。In one embodiment of the present application, the current location of the user is determined as the location information, and the user's location is used as the center of the circle, and the user's moving location is predicted according to the moving radius as the user's motion information; the moving radius is determined according to the satellite beam switching interval and the land high-speed rail speed ; After receiving the first handover prediction report, the satellite user switching management system judges the moving direction of the satellite, and predicts the beam that the user accesses according to the satellite moving direction and the user's user motion information; determines according to the predicted access beam and the satellite moving direction The fastest switching time and the slowest switching time.
具体地，卫星的用户切换管理系统收到第一切换预测报告后，根据第一切换预测报告中的位置信息，结合星历及用户运动信息(对地面用户运动方向的预测信息)，可进行预测分析。具体情况如图3a所示：带星号圆圈中心即为用户的具体位置。带星号圆圈覆盖的范围为该用户下一次切换前可能出现的位置，带星号圆圈半径以卫星波束切换间隔与陆地高铁速度100m/s为基准。如图3b所示，若卫星移动方向为方向一，则下一次切换该用户只可能在第一波束下，最快切换时刻为带星号圆沿路径一与第一波束接触时刻，最慢切换时刻为带星号圆沿路径一与第一波束离开时刻。如图3c所示，若卫星移动方向为方向二，则下一次切换用户可能出现在第一波束或者第二波束下，最快切换时刻分别为沿着方向路径二与第二波束以及第一波束的接触时刻，最慢切换时刻分别为沿着方向路径二与第二波束以及第一波束离开时刻。Specifically, after receiving the first handover prediction report, the satellite user handover management system can predict analyze. The specific situation is shown in Figure 3a: the center of the circle with an asterisk is the specific location of the user. The range covered by the asterisked circle is the possible location of the user before the next switch, and the radius of the asterisked circle is based on the satellite beam switching interval and the land high-speed rail speed of 100m/s. As shown in Figure 3b, if the moving direction of the satellite is direction 1, the user can only switch under the first beam next time, and the fastest switching time is when the circle with an asterisk contacts the first beam along path 1, and the slowest switching time The times are the times when the circle with an asterisk travels along path 1 and the first beam departs. As shown in Figure 3c, if the moving direction of the satellite is direction two, the next switching user may appear under the first beam or the second beam, and the fastest switching time is along the direction path two and the second beam and the first beam respectively. The contact time of , and the slowest switching time are respectively along the direction path two and the second beam and the departure time of the first beam.
用户切换管理系统通过以上分析向可能存在切换的波束发送切换请求，可能存在切换的波束组成目标波束群，请求报告格式如表2所示：Based on the above analysis, the user handover management system sends a handover request to the beams that may be handed over, and the beams that may be handed over form the target beam group. The request report format is shown in Table 2:
表2Table 2
在本申请的一种实施例中，切换预测报告中包括最快切换时刻；判断目标端是否可在最快切换时刻前进行信道资源分配，若是，则进行信道资源配置；若否，判断目标端是否可在最快切换时刻前释放信道资源；若是，向卫星返回当前信道的资源释放时刻信息；在目标端的原连接资源释放后，进行资源配置。In one embodiment of the present application, the handover prediction report includes the fastest handover time; it is judged whether the target end can perform channel resource allocation before the fastest handover time, and if so, the channel resource allocation is performed; if not, the target end is judged Whether the channel resources can be released before the fastest switching time; if so, return the resource release time information of the current channel to the satellite; after the original connection resources at the target end are released, perform resource allocation.
具体地，收到切换请求报告的波束若在波束最快切换时刻前可进行资源分配，则进行信道资源预分配，如果信道资源暂时被占用的情况下，如可在最快切换时刻前释放，需返回此信道资源释放时刻信息。Specifically, if the beam receiving the switching request report can perform resource allocation before the fastest switching time of the beam, channel resource pre-allocation will be performed. If the channel resource is temporarily occupied, if the channel resource can be released before the fastest switching time, Need to return this channel resource release time information.
并在该目标波束的原连接信道资源释放后为用户进行资源分配。将上下行频率信息以及信道资源释放时刻信息向卫星用户切换管理系统发送资源配置报告，报告内容如表3所示：And resource allocation is performed for the user after the original connection channel resource of the target beam is released. Send the resource configuration report to the satellite user handover management system with the uplink and downlink frequency information and channel resource release time information, and the content of the report is shown in Table 3:
表3table 3
需要说明的是，如果目标波束群中的目标波束判断不可进行资源配置，则不发送资源配置信息，只有判断符合条件的目标波束才向源卫星发送资源配置信息，符合条件的目标波束可以有一个，也可以有多个。It should be noted that if the target beams in the target beam group are judged to be unavailable for resource allocation, resource allocation information will not be sent, and only the target beams that meet the conditions are judged to send resource allocation information to the source satellite. The target beams that meet the conditions can have one , and there can be more than one.
在本申请的一种实施例中，目标端将资源配置信息发送至源端，源端根据资源配置信息将切换报告下发至用户终端UE，具体包括：目标波束群将资源资源配置的信息发送至用户切换管理系统；用户切换管理系统收到资源配置的信息后，确定目标波束群以及目标波束群中最晚资源释放时刻和最快切换时刻之间的时刻，作为第一切换报告的下发时刻；在下发时刻由用户切换管理系统向用户终端UE发送第一切换报告。In an embodiment of the present application, the target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information, specifically including: the target beam group sends resource configuration information To the user handover management system; after receiving the resource configuration information, the user handover management system determines the target beam group and the time between the latest resource release time and the fastest handover time in the target beam group, as the first handover report issued Time: at the sending time, the user handover management system sends the first handover report to the user terminal UE.
具体地，卫星用户切换管理系统收到资源配置信息后，对比所有可能切换波束信息，将所有可能切换波束视为一个目标波束群，以目标波束群中最晚资源释放时刻和最快切换时刻之间的时刻为第一切换报告下发时刻，向用户终端UE发送第一切换报告。报告内容如表4所示：Specifically, after receiving the resource configuration information, the satellite user switching management system compares all possible switching beam information, regards all possible switching beams as a target beam group, and uses the latest resource release time and the fastest switching time in the target beam group The time between is the sending time of the first handover report, and the first handover report is sent to the user terminal UE. The content of the report is shown in Table 4:
表4Table 4
在本申请的一种实施例中，UE将切换完成信息发送至目标端，目标端根据切换完成信息执行相应操作，具体包括：UE将第一切换完成报告发送至目标波束群，目标波束群中切换成功的目标波束根据切换完成报告向卫星的用户切换管理系统发送切换完成报告；用户切换管理系统根据切换完成报告向源波束发送资源释放报告，源波束根据资源释放报告进行资源释放；并将目标波束群中未连接成功的波束进行资源释放。In an embodiment of the present application, the UE sends the handover completion information to the target end, and the target end performs corresponding operations according to the handover completion information, specifically including: the UE sends the first handover completion report to the target beam group, and the target beam group The target beam that is handed over successfully sends a handover completion report to the user handover management system of the satellite according to the handover completion report; the user handover management system sends a resource release report to the source beam according to the handover completion report, and the source beam releases resources according to the resource release report; The unconnected beams in the beam group release resources.
具体地，UE根据第一切换报告进行切换，切换后向目标波束群上传切换完成报告，报告信息表5所示：Specifically, the UE performs handover according to the first handover report, and uploads a handover completion report to the target beam group after the handover, and the report information is shown in Table 5:
表5table 5
目标波束完成切换后，同卫星的用户切换管理系统向源波束发送资源释放报告，资源释放报告如表6所示：After the target beam is switched over, the user switching management system of the same satellite sends a resource release report to the source beam. The resource release report is shown in Table 6:
表6Table 6
源波束通过卫星的用户切换管理系统所发送资源释放报告进行资源释放，目标波束群中在其对应的第一切换预测报告中的最慢切换时刻后还未切换成功的自动进行资源释放。The source beam performs resource release through the resource release report sent by the satellite user handover management system, and the target beam group automatically performs resource release after the slowest handover time in the corresponding first handover prediction report.
如图4所示为星间波束切换信令交互流程示意图。FIG. 4 is a schematic diagram of an inter-satellite beam switching signaling interaction process.
在本申请的一种实施例中，通过源端向目标端发送切换预测报告，目标端根据切换预测报告进行资源配置，具体包括：通过源卫星的用户切换管理系统在上一次切换完成后获得用户的位置信息，根据位置信息向目标卫星群发送第二切换预测报告；第二切换预测报告包括最快切换时刻；目标卫星群根据第二切换预测报告判断在最快切换时刻前能够为用户进行资源配置，则为用户进行资源配置。In one embodiment of the present application, the source end sends a handover prediction report to the target end, and the target end performs resource allocation according to the handover prediction report, which specifically includes: obtaining user According to the location information, the second handover prediction report is sent to the target satellite group according to the location information; the second handover prediction report includes the fastest handover time; the target satellite group judges according to the second handover prediction report that it can provide resources for the user before the fastest handover time configuration, resource configuration is performed for the user.
具体地，源卫星的用户切换管理系统在上一次切换后获得用户的位置信息，根据上述星内波束切换相同计算方法向可能经过的其他卫星波束发送第二切换预测报告。第二切换预测报告如表7所示：Specifically, the user switching management system of the source satellite obtains the location information of the user after the last switching, and sends a second switching prediction report to other satellite beams that may pass through according to the same calculation method for intra-satellite beam switching. The second handover prediction report is shown in Table 7:
表7Table 7
目标卫星群获取第二切换预测报告后，根据所指定的源波束ID以及最快切换时刻判断是否在最快切换时刻前可为用户进行资源配置，如可进行资源配置，则向源卫星发送配置报告，报告内容如表8所示：After the target satellite group obtains the second handover prediction report, it judges whether resource allocation can be performed for users before the fastest handover time according to the specified source beam ID and the fastest handover time, and if resource allocation is possible, send the configuration to the source satellite Report, the content of the report is shown in Table 8:
表8Table 8
需要说明的是，如果目标卫星群中的目标卫星判断不可进行资源配置，则不发送资源配置信息，只有判断符合条件的目标卫星才向源卫星发送资源配置信息，该目标卫星可以有一个，也可以有多个。It should be noted that if the target satellites in the target satellite group judge that resource allocation is not possible, resource allocation information will not be sent, and only the target satellites that are judged to meet the conditions will send resource allocation information to the source satellite. The target satellite can have one, or There can be more than one.
在本申请的一种实施例中，目标端将资源配置信息发送至源端，源端根据资源配置信息将切换报告下发至用户终端UE，具体包括：目标卫星群将资源资源配置的信息发送至源卫星，资源配置信息包括目标卫星群的资源释放时刻；源卫星的用户切换管理系统根据资源释放时刻中的最晚资源释放时刻和最快切换时刻之间的时刻作为第二切换报告的下发时刻；在下发时刻由用户切换管理系统向用户终端UE发送第二切换报告。In an embodiment of the present application, the target end sends resource configuration information to the source end, and the source end sends a handover report to the user terminal UE according to the resource configuration information, specifically including: the target satellite group sends resource configuration information To the source satellite, the resource configuration information includes the resource release time of the target satellite group; the user switching management system of the source satellite uses the time between the latest resource release time and the fastest switching time in the resource release time as the next handover report sending time; at the sending time, the user handover management system sends the second handover report to the user terminal UE.
具体地，源卫星的用户切换管理系统接收到目标卫星群返回的资源配置报告后，集合成卫星群信息，根据卫星群信息中各个目标卫星的释放资源时刻，以其中各个目标卫星的的最晚资源释放时刻和最快切换时刻之间的时刻为第二切换报告下发时刻，向UE发送第二切换报告。报告内容如表9所示：Specifically, after receiving the resource allocation report returned by the target satellite group, the user switching management system of the source satellite collects the satellite group information, and according to the resource release time of each target satellite in the satellite group information, the latest The time between the resource release time and the fastest handover time is the second handover report sending time, and the second handover report is sent to the UE. The content of the report is shown in Table 9:
表9Table 9
在本申请的一种实施例中，UE将切换完成信息发送至目标端，目标端根据切换完成信息执行相应操作，具体包括：UE将第一切换完成报告发送至目标卫星群，目标卫星群根据切换完成报告向地面核心网发起更新承载上下文的请求；核心网响应请求与目标卫星群中连接成功的目标卫星建立连接，当建立完成后由目标卫星向源卫星发送资源释放报告；并目标卫星群对未连接成功的目标卫星进行资源释放。In an embodiment of the present application, the UE sends the handover completion information to the target terminal, and the target terminal performs corresponding operations according to the handover completion information, which specifically includes: the UE sends the first handover completion report to the target satellite group, and the target satellite group according to The handover completion report initiates a request to update the bearer context to the ground core network; the core network responds to the request to establish a connection with the target satellite that is successfully connected in the target satellite group, and when the establishment is completed, the target satellite sends a resource release report to the source satellite; and the target satellite group Release resources for target satellites that are not successfully connected.
具体地，UE根据第二切换报告进行切换，切换后向目标卫星群上传切换完成报告，报告信息如表10所示：Specifically, the UE performs handover according to the second handover report, and uploads a handover completion report to the target satellite group after the handover, and the report information is shown in Table 10:
表10Table 10
目标波束完成切换后，首先向地面核心网进行发起新承载建立请求，请求建立完成后向源波束发送资源释放报告，资源释放报告如表11所示：After the target beam is switched over, it first initiates a new bearer establishment request to the ground core network, and sends a resource release report to the source beam after the request is established. The resource release report is shown in Table 11:
表11Table 11
源波束通过源卫星用户切换管理系统所发送释放报告进行资源释放，目标波束群中在其对应的第二切换预测报告中的最慢切换时刻后还未切换成功的自动进行资源释放。The source beam performs resource release through the release report sent by the source satellite user switching management system, and the target beam group that has not switched successfully after the slowest switching time in its corresponding second switching prediction report automatically releases resources.
以上为本申请实施例提供的一种低轨卫星无测量报告自主预测切换方法及设备，基于同样的发明思路，本申请实施例还提供了相应的一种低轨卫星无测量报告自主预测切换设备，如图5所示。The above is a low-orbit satellite non-measurement report autonomous prediction switching method and equipment provided by the embodiment of the present application. Based on the same inventive idea, the embodiment of the present application also provides a corresponding low-orbit satellite non-measurement report autonomous prediction switching device , as shown in Figure 5.
本实施例提供了一种低轨卫星无测量报告自主预测切换设备，包括：This embodiment provides a low-orbit satellite non-measurement report autonomous prediction switching device, including:
至少一个处理器501；以及，at least one
与至少一个处理器501通过总线503通信连接的存储器502；其中，A
存储器502存储有可被至少一个处理器执行的指令，指令被至少一个处理器501执行，以使至少一个处理器501能够执行：The
通过源端向目标端发送切换预测报告，目标端根据切换预测报告进行资源配置；The source end sends a handover prediction report to the target end, and the target end performs resource allocation according to the handover prediction report;
目标端将资源配置信息发送至源端，源端根据资源配置信息将切换报告下发至用户终端UE；The target end sends the resource configuration information to the source end, and the source end sends the handover report to the user terminal UE according to the resource configuration information;
UE根据切换报告完成信道切换。The UE completes channel switching according to the switching report.
基于同样的思路，本申请的一些实施例还提供了上述方法对应的介质。Based on the same idea, some embodiments of the present application also provide media corresponding to the above method.
本申请的一些实施例提供的一种存储介质，存储有计算机可执行指令，计算机可执行指令由处理器执行，以实现下述步骤：A storage medium provided by some embodiments of the present application stores computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the following steps:
通过源端向目标端发送切换预测报告，目标端根据切换预测报告进行资源配置；The source end sends a handover prediction report to the target end, and the target end performs resource allocation according to the handover prediction report;
目标端将资源配置信息发送至源端，源端根据资源配置信息将切换报告下发至用户终端UE；The target end sends the resource configuration information to the source end, and the source end sends the handover report to the user terminal UE according to the resource configuration information;
UE根据切换报告完成信道切换。The UE completes channel switching according to the switching report.
本申请中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于方法和介质实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。Each embodiment in the present application is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method and medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for relevant parts, please refer to the descriptions of the method embodiments.
本申请实施例提供的方法和介质与方法是一一对应的，因此，方法和介质也具有与其对应的方法类似的有益技术效果，由于上面已经对方法的有益技术效果进行了详细说明，因此，这里不再赘述方法和介质的有益技术效果。The methods and media provided in the embodiments of the present application correspond to the methods one by one, therefore, the methods and media also have beneficial technical effects similar to their corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, therefore, The beneficial technical effects of the method and medium will not be repeated here.
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程方法商品或者方法不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程方法商品或者方法所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程方法商品或者方法中还存在另外的相同要素。It should also be noted that the term "comprises," "comprises," or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, commodity or method that includes a set of elements includes not only those elements, but also includes not expressly included. other elements listed, or also include elements inherent to the process method commodity or method. Without further limitations, an element qualified by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process method article or method comprising the element.
以上仅为本申请的实施例而已，并不用于限制本申请。虽然，上文中已经用一般性说明及具体实施方案对本申请作了详尽的描述，但在本申请基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本申请精神的基础上所做的这些修改或改进，均属于本申请要求保护的范围。The above are only examples of the present application, and are not intended to limit the present application. Although the present application has been described in detail with general descriptions and specific implementations above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present application. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present application all belong to the protection scope of the present application.
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