WO2022213839A1 - 基于地面移动网络和卫星移动网络切换的通信方法和核心网 - Google Patents

基于地面移动网络和卫星移动网络切换的通信方法和核心网 Download PDF

Info

Publication number
WO2022213839A1
WO2022213839A1 PCT/CN2022/083499 CN2022083499W WO2022213839A1 WO 2022213839 A1 WO2022213839 A1 WO 2022213839A1 CN 2022083499 W CN2022083499 W CN 2022083499W WO 2022213839 A1 WO2022213839 A1 WO 2022213839A1
Authority
WO
WIPO (PCT)
Prior art keywords
satellite
network
base station
mobile terminal
handover
Prior art date
Application number
PCT/CN2022/083499
Other languages
English (en)
French (fr)
Inventor
邱权冠
苏国章
Original Assignee
广州爱浦路网络技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州爱浦路网络技术有限公司 filed Critical 广州爱浦路网络技术有限公司
Priority to EP22783906.5A priority Critical patent/EP4221018A1/en
Publication of WO2022213839A1 publication Critical patent/WO2022213839A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of mobile communication, in particular to a communication method and core network based on handover between a terrestrial mobile network and a satellite mobile network.
  • Satellite mobile communication technology has begun to enter the satellite mobile communication network, because the satellite mobile communication network is compared with the public land communication network based on ground base stations. It has the advantage of wide coverage. As long as the number of satellites is enough, satellite signals can be received for communication even if you go to deep mountains or deserts. Can use satellite mobile network for communication. Although the satellite mobile network has the advantages of wide coverage and no fear of natural disasters, compared with the land public mobile network, the satellite mobile network has a limited number of satellites, communication in the air and on the ground, long distance, high delay and small bandwidth.
  • Some communication technologies adopt the idea of switching between the terrestrial mobile network and the satellite mobile network, which can comprehensively utilize the advantages of the terrestrial mobile network and the satellite mobile network.
  • the switching method is to directly disconnect the original network and then connect to the new network, which is easy to cause problems such as communication interruption, which seriously affects the communication process requiring continuous data, and even makes the communication unable to proceed normally.
  • the purpose of the present application is to provide a communication method and a core network based on handover between a terrestrial mobile network and a satellite mobile network.
  • the embodiments of the present application include a communication method based on handover between a terrestrial mobile network and a satellite mobile network, including:
  • the core network obtains the first handover request sent by the mobile terminal through the ground base station connected to the mobile terminal; the first handover request includes the first context data generated between the mobile terminal and the ground base station;
  • the core network searches for a target satellite;
  • the target satellite is a communication satellite that can maintain the longest effective communication time with the mobile terminal;
  • the core network caches the first context data
  • the core network requests the target satellite to switch the connection between the mobile terminal and the ground base station to the target satellite;
  • the core network modifies the data link of the mobile terminal to connect with the target satellite, and sends the buffered first context data to the target satellite through the target satellite. the mobile terminal.
  • the communication method based on the handover of the terrestrial mobile network and the satellite mobile network also includes:
  • the core network When the handover result returned by the target satellite is successful, the core network also returns the handover result to the ground base station, instructing the ground base station to release the first context data.
  • the communication method based on the handover of the terrestrial mobile network and the satellite mobile network also includes:
  • the core network When the handover result returned by the target satellite is a failure, the core network returns the handover result to the ground base station, maintains the data link of the mobile terminal to be connected to the ground base station, and cancels the connection to the ground base station.
  • a buffer of context data sending the buffered first context data to the mobile terminal through the ground base station.
  • the first handover request further includes a satellite identifier of at least one communication satellite detected by the mobile terminal.
  • the core network searches for a target satellite, including:
  • the core network reads the running track and running speed of the corresponding communication satellite locally according to the satellite identification;
  • the effective communication trajectory and the running speed determine the effective communication time of the corresponding communication satellite
  • the communication satellite with the longest effective communication time is determined as the target satellite.
  • the communication method based on the handover of the terrestrial mobile network and the satellite mobile network also includes:
  • the core network obtains the second handover request sent by the mobile terminal through the target satellite;
  • the second handover request includes second context data generated between the mobile terminal and the target satellite;
  • the core network searches for a terrestrial base station
  • the core network caches the second context data
  • the core network requests the ground base station to switch the connection between the mobile terminal and the ground base station to the ground base station;
  • the core network modifies the data link of the mobile terminal to connect with the terrestrial base station, and sends the buffered second context data to the terrestrial base station through the terrestrial base station. the mobile terminal.
  • the communication method based on the handover of the terrestrial mobile network and the satellite mobile network also includes:
  • the core network forces the mobile terminal to be handed over to connect with the ground base station.
  • the core network forcibly switches the mobile terminal to connect with the ground base station, including:
  • the core network executes the terminal registration process in the TS 3GPP 23502 protocol, accepts the registration of the mobile terminal, and releases the cached second context data.
  • the embodiment of the present application further includes a core network, where the core network includes an access management network element and a data plane network element, and the core network is configured to execute the ground-based mobile network and the satellite-based mobile network in the embodiment Switch the communication method.
  • the access management network elements are MME network elements and AMF network elements
  • the data plane network elements are SGW network elements, PGW network elements, and UPF network elements.
  • the beneficial effects of the present application are: the communication method and the core network based on the handover of the ground mobile network and the satellite mobile network in the embodiment, in the whole communication process of the mobile terminal switching from the ground base station to the target satellite, the context data is forwarded through the core network, There is no direct communication between the base station and the satellite base station of the land mobile network, which avoids the increased resource consumption for establishing communication between the ground base station and the satellite, such as the increase of the satellite communication antenna and resources of the land base station and the increase in the energy consumption of the base station, so as to avoid causing The cost of the base station increases; because the first handover request message carries the first context data generated by the original communication process between the mobile terminal and the ground base station, and the core network caches the first context data, it can reduce the preparation and execution stage of handover. Repeated data communication with the target satellite reduces the communication pressure on the target satellite, and at the same time can maintain the continuity of the first context data, so that the communication process with continuous data requirements can also be applied to the switching between the ground
  • Fig. 1 is the communication network system schematic diagram of the communication method based on ground mobile network and satellite mobile network handover in the application embodiment;
  • FIG. 2 is a schematic diagram of the data processing flow of each terminal in the process of switching the mobile terminal from the ground base station to the connection with the communication satellite in the embodiment;
  • FIG. 3 is a schematic diagram of calculating an effective communication trajectory in an embodiment
  • FIG. 4 is a schematic diagram of the data processing flow of each terminal in the process of switching from a communication satellite to being connected to a ground base station in an embodiment of the mobile terminal;
  • FIG. 5 is a schematic flowchart of forcing a mobile terminal to switch to a ground base station in an embodiment.
  • the communication method based on the handover between the terrestrial mobile network and the satellite mobile network is applied to the communication network system as shown in FIG. 1 .
  • the communication network system includes a ground mobile network, a satellite mobile network, a core network and a mobile terminal.
  • the communication network system includes a ground mobile network, a satellite mobile network, a core network and a mobile terminal.
  • each base station in the ground mobile network is shown, and other components such as the server and the optical fiber network in the ground mobile network are not shown.
  • the satellite mobile network is shown in Fig. 1. Satellites such as low-orbit satellites, medium-orbit satellites, geostationary satellites, as well as independent or integrated satellite signal receiving stations and ground base stations, other components of the satellite mobile network are not shown.
  • the core network mainly includes access management network elements and data plane network elements.
  • the access management network elements can be MME network elements, and the data plane network elements can be SGW network elements and PGW network elements;
  • the network is a 5G core network, the access management network element can be an AMF network element, and the data plane network element can be a UPF network element. Since the communication method in this embodiment does not depend on the type of core network, 4G core network, 5G network element can be applied Core network or other more advanced core network.
  • the principle of the communication method in this embodiment is that the user holds a mobile terminal such as a mobile phone and a tablet computer, and the mobile terminal supports access to a terrestrial mobile network and also supports access to a satellite mobile network.
  • the algorithm logic for the mobile terminal to choose to access the ground mobile network or the satellite mobile network is: when a good ground mobile network base station signal can be obtained, it preferentially chooses to access the ground mobile network; when the ground mobile network signal cannot be detected or can be detected When the signal quality of the terrestrial mobile network is very poor, choose to access the satellite mobile network.
  • the mobile terminal can choose to access the ground mobile network.
  • network because the cost of communication through the terrestrial mobile network is lower, and the terrestrial mobile network has stronger performance, higher stability and stronger user carrying capacity.
  • one of the terrestrial mobile network and the satellite mobile network is used as the current service network to provide communication link services to the mobile terminal for the mobile terminal to access the communication network, and the other network is not used as the current service network, which is equivalent to being in an idle state .
  • the ground mobile network is the current service network
  • another network namely the satellite mobile network
  • the satellite mobile network is not the current service network
  • the satellite mobile network is the current service network.
  • network, and the other network, the land mobile network is not the current service network.
  • the mobile terminal periodically measures the wireless signal quality.
  • the mobile terminal In the case where the mobile terminal is connected to the ground base station, when the mobile terminal measures all the base station signals of the ground mobile network and cannot guarantee the network data transmission, and detects that the wireless signals of several communication satellites can support data transmission, the mobile terminal will report to the public The ground base station of the land mobile network issues a handover to the satellite mobile network request message.
  • the mobile terminal In the case where the mobile terminal is connected to a communication satellite, when the mobile terminal detects that all communication satellite signals cannot guarantee network data transmission, and detects that the wireless signal of the ground base station can support data transmission, it will send a message to the connected communication satellite. Handover to land mobile network request message.
  • the mobile terminal when the mobile terminal needs to switch the current service network according to its algorithm logic, the mobile terminal generates a switching request.
  • the mobile terminal is currently connected to the ground base station, the mobile terminal determines through signal measurement that it needs to be handed over to the communication satellite, and the handover request generated by the mobile terminal at this time is the first handover request.
  • the mobile terminal also packages the first context data generated by the communication with the ground base station, the satellite identifiers of several communication satellites with the best signal quality identified through the signal quality detection, and the first handover request, that is, the first handover request.
  • the request includes the first context data and satellite identifiers of several communication satellites with the best signal quality.
  • the mobile terminal sends the first handover request to the ground base station, and the ground base station forwards the first handover request to the access management network element in the core network.
  • the access management network element parses out the satellite identification, and reads the running track and running speed of the corresponding communication satellite from the local according to the satellite identification, for example, reads the operation of the corresponding communication satellite 1 according to the satellite identification 1 Track 1 and running speed 1, read the running track 2 and running speed 2 of the corresponding communication satellite 2 according to the satellite identification 2. 3, the access management network element determines the effective communication trajectory of the corresponding communication satellite according to the running track and the position information of the mobile terminal.
  • the access management network element determines the communication satellite with the longest effective communication time as the target satellite, and the searched target satellite is the communication satellite that can maintain the longest effective communication time with the mobile terminal.
  • the access management network element sends the first context data parsed from the first handover request to the data plane network element, and the data plane network element caches the first context data.
  • the access management network element requests the target satellite to switch the connection between the mobile terminal and the ground base station to the target satellite. Specifically, the access management network element sends a first handover request to the target satellite. After the target satellite receives the first handover request , returns the handover result response information to the access management network element, which is used to indicate whether the handover result returned by the target satellite is successful or unsuccessful.
  • the data plane network element in the core network modifies the data link of the mobile terminal to connect with the target satellite, and sends the buffered first context data to the mobile terminal through the target satellite.
  • the access management network element also returns the handover result to the ground base station, and instructs the ground base station to release the first context data.
  • the access management network element in the core network returns the handover result to the ground base station, maintains the data link of the mobile terminal to be connected with the ground base station, cancels the cache of the first context data, and stores the The buffered first context data is sent to the mobile terminal through the ground base station.
  • the first handover request message carries the first context data generated by the original communication process between the mobile terminal and the ground base station, and the core network caches the first context data, it can reduce the number of times during the handover preparation and execution phases with the target satellite. It can reduce the communication pressure of the target satellite and maintain the continuity of the first context data.
  • the mobile terminal When the base station currently served by the mobile terminal is the target satellite, if the mobile terminal recognizes that there is a ground base station of the public land mobile network with a good signal, and the signal of the ground base station lasts for more than a specified time (for example, 10 seconds), start the The process of handover from the target satellite to the ground base station.
  • the reason for the handover is that the satellite is far away from the terminal in the air, so the wireless performance is weaker than that of the land base station, and the number of satellites on the transmission link of the satellite mobile network is limited. Therefore, when there is a good ground base station signal, the ground base station is preferentially selected for access.
  • Figure 4 The process of switching the mobile terminal from the target satellite to the ground base station is shown in Figure 4, which includes:
  • the core network obtains the second handover request sent by the mobile terminal through the target satellite; the second handover request includes the second context data generated between the mobile terminal and the target satellite;
  • the core network searches out the ground base station;
  • the core network caches the second context data
  • the core network requests the ground base station to switch the connection between the mobile terminal and the ground base station to the ground base station;
  • the core network modifies the data link of the mobile terminal to connect with the ground base station, and sends the buffered second context data to the mobile terminal through the ground base station.
  • the process of switching the mobile terminal from the target satellite to the ground base station is opposite to the process of switching the mobile terminal from the ground base station to the target satellite, that is, the process shown in FIG.
  • the access management network element of the core network can directly select the base station with the strongest signal as the ground base station to be connected.
  • the terrestrial base station is preferentially selected, so when the mobile terminal fails in the process of switching from the target satellite to the terrestrial base station, the process of forcing the mobile terminal to switch to the terrestrial base station will be started.
  • the core network obtains the registration request information sent by the mobile terminal through the ground base station, executes the terminal registration process in the TS 3GPP 23502 protocol, accepts the registration of the mobile terminal, and establishes a data plane data transmission channel at the data plane network element of the core network . After completing the registration of the mobile terminal in the core network, it will send a request to release the context and terminal resources to the satellite and core network access management network elements, and release the data channels of the satellite and core network data plane network elements. After the mobile terminal resources allocated by the terminal are released, the entire forced handover process is completed.
  • the embodiments of the present application may be implemented or implemented by computer hardware, a combination of hardware and software, or by computer instructions stored in non-transitory computer readable memory.
  • the method can be implemented in a computer program using standard programming techniques - including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner - according to the specific Methods and figures described in the Examples.
  • Each program may be implemented in a high-level procedural or object-oriented programming language to communicate with a computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
  • the operations of the processes described in this embodiment may be performed in any suitable order unless otherwise indicated by this embodiment or otherwise clearly contradicted by context.
  • the processes described in this embodiment may be performed under the control of one or more computer systems configured with executable instructions, and may be executed as code collectively executing on one or more processors (eg, executable instructions, one or more computer programs, or one or more applications), implemented in hardware, or a combination thereof.
  • the computer program includes a plurality of instructions executable by one or more processors.
  • the methods may be implemented in any type of computing platform operably connected to a suitable, including but not limited to personal computer, minicomputer, mainframe, workstation, network or distributed computing environment, stand-alone or integrated computer platform, or communicate with charged particle tools or other imaging devices, etc.
  • Aspects of the present application may be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and/or write storage medium, RAM, ROM, etc., such that it can be read by a programmable computer, when a storage medium or device is read by a computer, it can be used to configure and operate the computer to perform the processes described herein.
  • machine-readable code may be transmitted over wired or wireless networks.
  • the invention described in this embodiment includes these and other various types of non-transitory computer-readable storage media when such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor.
  • This application also includes the computer itself when programmed according to the methods and techniques described in this application.
  • a computer program can be applied to input data to perform the functions described in this embodiment to transform the input data to generate output data for storage to non-volatile memory.
  • the output information can also be applied to one or more output devices such as a display.
  • the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on the display.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请公开了一种基于地面移动网络和卫星移动网络切换的通信方法和核心网，核心网通过地面基站获取第一切换请求，搜索出目标卫星，缓存第一上下文数据，向目标卫星请求将移动终端切换至与目标卫星连接，当目标卫星返回的切换结果为成功，核心网将移动终端的数据链路修改为与目标卫星连接，将缓存的第一上下文数据通过目标卫星发送至移动终端。本申请第一切换请求消息中携带了移动终端与地面基站原来通信过程产生的第一上下文数据，并且核心网将第一上下文数据缓存起来，可以减少切换的预准备和执行阶段的多次与目标卫星的数据通信，减少目标卫星的通信压力，同时可以保持第一上下文数据的连续性。本申请广泛应用于移动通信技术领域。

Description

基于地面移动网络和卫星移动网络切换的通信方法和核心网
相关申请的交叉引用
本申请要求于2021年04月07日提交中国国家知识产权局的申请号为202110371376.3、名称为“基于地面移动网络和卫星移动网络切换的通信方法和核心网”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及移动通信技术领域，尤其是一种基于地面移动网络和卫星移动网络切换的通信方法和核心网。
背景技术
随着移动通信技术的发展，现在已经不再满足于使用地面基站的信号进行移动设备的通信，移动通信技术开始进军卫星移动通信网络，因为卫星移动通信网络相对于基于地面基站的公用陆地通信网络拥有覆盖面广的优点，只有卫星数量足够，就算去到深山或者荒漠中也能收到卫星信号进行通信，或者由于某个地区的自然灾害原因，比如地震，造成地方基站破坏和断电情况，也能使用卫星移动网络进行通信。虽然卫星移动网络有覆盖面广和不惧怕自然灾害破坏的优点，但是相对于陆地公用移动网络，卫星移动网络的卫星数量有限，在空中和地面通信，距离远，时延高和带宽小等缺点。
一些通信技术采用了在地面移动网络和卫星移动网络之间进行切换的思路，能够综合利用地面移动网络和卫星移动网络的优点。但是其切换方式是直接断开原来的网络，再接入新的网络，容易造成通信中断等问题，严重影响有连续性数据要求的通信过程，甚至使得通信无法正常进行。
发明内容
针对上述至少一个技术问题，本申请的目的在于提供一种基于地面移动网络和卫星移动网络切换的通信方法和核心网。
一方面，本申请实施例包括一种基于地面移动网络和卫星移动网络切换的通信方法，包括：
核心网通过与移动终端连接的地面基站，获取所述移动终端发出的第一切换请求；所述第一切换请求包括所述移动终端与所述地面基站之间产生的第一上下文数据；
响应于所述第一切换请求，所述核心网搜索出目标卫星；所述目标卫星是能与所述移动终端保持最长有效通信时间的通信卫星；
所述核心网缓存所述第一上下文数据；
所述核心网向所述目标卫星请求将所述移动终端与所述地面基站之间的连接切换至所 述目标卫星；
当所述目标卫星返回的切换结果为成功，所述核心网将所述移动终端的数据链路修改为与所述目标卫星连接，将缓存的所述第一上下文数据通过所述目标卫星发送至所述移动终端。
进一步地，基于地面移动网络和卫星移动网络切换的通信方法还包括：
当所述目标卫星返回的切换结果为成功，所述核心网还向所述地面基站返回所述切换结果，指令所述地面基站释放所述第一上下文数据。
进一步地，基于地面移动网络和卫星移动网络切换的通信方法还包括：
当所述目标卫星返回的切换结果为失败，所述核心网向所述地面基站返回所述切换结果，将所述移动终端的数据链路维持为与所述地面基站连接，取消对所述第一上下文数据的缓存，将缓存的所述第一上下文数据通过所述地面基站发送至所述移动终端。
进一步地，所述第一切换请求还包括所述移动终端检测到的至少一个通信卫星的卫星标识。
进一步地，所述响应于所述第一切换请求，所述核心网搜索出目标卫星，包括：
所述核心网根据所述卫星标识，从本地读取相应通信卫星的运行轨迹和运行速度；
根据所述运行轨迹和所述移动终端的位置信息，确定相应通信卫星的有效通信轨迹；
根据所述有效通信轨迹与所述运行速度，确定相应通信卫星的有效通信时间；
将具有最长的所述有效通信时间的通信卫星确定为所述目标卫星。
进一步地，基于地面移动网络和卫星移动网络切换的通信方法还包括：
核心网通过所述目标卫星，获取所述移动终端发出的第二切换请求；所述第二切换请求包括所述移动终端与所述目标卫星之间产生的第二上下文数据；
响应于所述第二切换请求，所述核心网搜索出地面基站；
所述核心网缓存所述第二上下文数据；
所述核心网向所述地面基站请求将所述移动终端与所述地面基站之间的连接切换至所述地面基站；
当所述地面基站返回的切换结果为成功，所述核心网将所述移动终端的数据链路修改为与所述地面基站连接，将缓存的所述第二上下文数据通过所述地面基站发送至所述移动终端。
进一步地，基于地面移动网络和卫星移动网络切换的通信方法还包括：
当所述地面基站返回的切换结果为失败，所述核心网将所述移动终端强制切换至与所述地面基站连接。
进一步地，所述核心网将所述移动终端强制切换至与所述地面基站连接，包括：
所述核心网通过所述地面基站获取所述移动终端发出的注册请求信息；
响应于所述注册请求信息，所述核心网执行TS 3GPP 23502协议中的终端注册流程，接受所述移动终端的注册，释放所缓存的所述第二上下文数据。
另一方面，本申请实施例还包括一种核心网，所述核心网包括接入管理网元和数据面网元，所述核心网用于执行实施例中的基于地面移动网络和卫星移动网络切换的通信方法。
进一步地，所述接入管理网元为MME网元、AMF网元，所述数据面网元为SGW网元、PGW网元、UPF网元。
本申请的有益效果是：实施例中的基于地面移动网络和卫星移动网络切换的通信方法和核心网，在移动终端从地面基站切换至目标卫星的整个通信流程中，经过核心网转发上下文数据，陆地移动网络的基站和卫星基站没有直接通信，避免为了在地面基站和卫星之间建立通信而增加的资源消耗，例如陆地基站增加的卫星通信的天线和资源以及基站能耗增加等，从而避免造成基站的成本增加；由于第一切换请求消息中携带了移动终端与地面基站原来通信过程产生的第一上下文数据，并且核心网将第一上下文数据缓存起来，可以减少切换的预准备和执行阶段的多次与目标卫星的数据通信，减少目标卫星的通信压力，同时可以保持第一上下文数据的连续性，使得有连续性数据要求的通信过程也能适用地面移动网络和卫星移动网络之间的切换。
附图说明
图1为应用实施例中基于地面移动网络和卫星移动网络切换的通信方法的通信网络***示意图；
图2为实施例中移动终端从地面基站切换至与通信卫星连接的过程中，各端的数据处理流程示意图；
图3为实施例中计算有效通信轨迹的原理图；
图4为实施例中移动终端从通信卫星切换至与地面基站连接的过程中，各端的数据处理流程示意图；
图5为实施例中强制移动终端切换到地面基站的流程示意图。
具体实施方式
本实施例中，基于地面移动网络和卫星移动网络切换的通信方法被应用于如图1所示的通信网络***。参照图1，通信网络***包括地面移动网络、卫星移动网络、核心网和移动终端。为保持图1的简洁性，只示出了地面移动网络中的各个基站，未示出地面移动网络中的服务器和光纤网络等其他组成部分，同理图1中只示出了卫星移动网络的低轨卫星、中轨卫星、同步卫星等卫星，以及独立或集成在一起的卫星信号接收站和地面基站，未示出卫星移动网络的其他组成部分。核心网主要包括接入管理网元和数据面网元，当核 心网是4G核心网，接入管理网元可以是MME网元，数据面网元可以是SGW网元、PGW网元；当核心网是5G核心网，接入管理网元可以是AMF网元，数据面网元可以是UPF网元，由于本实施例中的通信方法不依赖核心网的种类，因此可以应用4G核心网、5G核心网或者其他更先进的核心网。
本实施例中的通信方法的原理是：用户持有手机、平板电脑等移动终端，移动终端支持接入地面移动网络，也支持接入卫星移动网络。移动终端选择接入地面移动网络或者接入卫星移动网络的算法逻辑是：当能够获得良好的地面移动网络基站信号时，优先选择接入地面移动网络；当检测不到地面移动网络信号或者能够检测到的地面移动网络信号质量很差时，选择接入卫星移动网络。如果移动终端接入了卫星移动网络，而检测到地面移动网络具有良好的信号质量，并且地面移动网络的良好的信号能够持续一段时间(例如至少10秒)，那么移动终端可以选择接入地面移动网络，因为通过地面移动网络进行通信的成本更低，而且地面移动网络具有更强的性能、更高的稳定性和更强的用户承载能力。
因此，地面移动网络和卫星移动网络中的一个网络作为当前服务网络，向移动终端提供通信链路服务，供移动终端接入至通信网络，另一个网络不作为当前服务网络，相当于处于闲置状态。例如，当移动终端接入地面移动网络，那么地面移动网络就是当前服务网络，而另一个网络即卫星移动网络就不是当前服务网络；当移动终端接入卫星移动网络，那么卫星移动网络就是当前服务网络，而另一个网络即地面移动网络就不是当前服务网络。
移动终端定时进行无线信号质量测量。在移动终端与地面基站连接的情况下，当移动终端测量到所有的地面移动网络的基站信号都不能保证网络数据传输，而检测到几个通信卫星的无线信号能够支持数据传输，则会向公用陆地移动网络的地面基站发出切换到卫星移动网络请求消息。在移动终端与通信卫星连接的情况下，当移动终端测量到所有的通信卫星信号都不能保证网络数据传输，而检测到地面基站的无线信号能够支持数据传输，则会向所连接的通信卫星发出切换到地面移动网络请求消息。
本实施例中，当移动终端根据其算法逻辑，需要切换当前服务网络时，移动终端生成切换请求。
参照图2，移动终端当前与地面基站连接，移动终端通过信号测量确定需要切换至通信卫星，移动终端此时生成的切换请求为第一切换请求。移动终端还将其与地面基站之间通信产生的第一上下文数据、通过信号质量检测识别出的信号质量最好的几个通信卫星的卫星标识与第一切换请求打包在一起，即第一切换请求中包括第一上下文数据以及信号质量最好的几个通信卫星的卫星标识。
移动终端将第一切换请求发送至地面基站，地面基站将第一切换请求转发至核心网中的接入管理网元。接入管理网元接收到第一切换请求后，解析出卫星标识，根据卫星标识， 从本地读取相应通信卫星的运行轨迹和运行速度，例如根据卫星标识1读取相应的通信卫星1的运行轨迹1和运行速度1，根据卫星标识2读取相应的通信卫星2的运行轨迹2和运行速度2。参照图3，接入管理网元根据运行轨迹和移动终端的位置信息，确定相应通信卫星的有效通信轨迹，具体地，接入管理网元通过移动终端和卫星有效通信距离(能够维持卫星与移动终端通信的距离)，和卫星位置计算出卫星与终端有效通信轨迹对应的角度，然后根据卫星与终端有效通信轨迹的对应的卫星飞行轨迹的地心角和卫星的在轨角速度，计算出卫星在有效轨迹角度下经过的有效通信时间。最后，接入管理网元将具有最长的有效通信时间的通信卫星确定为目标卫星，所搜索到的目标卫星是能与移动终端保持最长有效通信时间的通信卫星。
接入管理网元将从第一切换请求中解析出的第一上下文数据发送至数据面网元，由数据面网元将第一上下文数据缓存起来。
接入管理网元向目标卫星请求将移动终端与地面基站之间的连接切换至目标卫星，具体地，接入管理网元向目标卫星发送第一切换请求，目标卫星接收到第一切换请求后，向接入管理网元返回切换结果应答信息，用来表示目标卫星返回的切换结果是成功还是失败。
当目标卫星返回的切换结果为成功，核心网中的数据面网元将移动终端的数据链路修改为与目标卫星连接，将缓存的第一上下文数据通过目标卫星发送至移动终端。接入管理网元还向地面基站返回切换结果，指令地面基站释放第一上下文数据。
当目标卫星返回的切换结果为失败，核心网中的接入管理网元向地面基站返回切换结果，将移动终端的数据链路维持为与地面基站连接，取消对第一上下文数据的缓存，将缓存的第一上下文数据通过地面基站发送至移动终端。
在移动终端从地面基站切换至目标卫星的整个通信流程中，相对于3GPP的切换流程做了一系列的优化，在这个通信流程中，经过核心网转发上下文数据，陆地移动网络的基站和卫星基站没有直接通信，避免为了在地面基站和卫星之间建立通信而增加的资源消耗，例如陆地基站增加的卫星通信的天线和资源以及基站能耗增加等，从而避免造成基站的成本增加。由于第一切换请求消息中携带了移动终端与地面基站原来通信过程产生的第一上下文数据，并且核心网将第一上下文数据缓存起来，可以减少切换的预准备和执行阶段的多次与目标卫星的数据通信，减少目标卫星的通信压力，同时可以保持第一上下文数据的连续性。
当移动终端现在服务的基站为目标卫星时，如果移动终端识别到存在信号良好的公用陆地移动网络的地面基站，并且地面基站的信号良好情况持续时间超过一个规定时间(例如10秒)，则启动从目标卫星切换到地面基站流程。切换的原因是卫星在空中距离终端远所以无线性能相对陆地基站的无线性能较弱，以及卫星移动网络的传输链路上的卫星数量 有限，一个卫星信号覆盖面广，性能有限，承载用户能力有限，所以在拥有良好的地面基站信号时，优先选择地面基站接入。
移动终端从目标卫星切换到地面基站流程如图4所示，其包括：
核心网通过目标卫星，获取移动终端发出的第二切换请求；第二切换请求包括移动终端与目标卫星之间产生的第二上下文数据；
响应于第二切换请求，核心网搜索出地面基站；
核心网缓存第二上下文数据；
核心网向地面基站请求将移动终端与地面基站之间的连接切换至地面基站；
当地面基站返回的切换结果为成功，核心网将移动终端的数据链路修改为与地面基站连接，将缓存的第二上下文数据通过地面基站发送至移动终端。
参照图4，移动终端从目标卫星切换到地面基站流程，与移动终端从地面基站切换到目标卫星流程即图2所示的过程相反，并且免去了核心网的接入管理网元在多个通信卫星中选择目标卫星的过程，核心网的接入管理网元可以直接选择信号最强的基站作为所要连接的地面基站。
移动终端在切换过程中，是优先选择地面基站，所以当移动终端从目标卫星切换到地面基站流程中失败时，将启动强制移动终端切换到地面基站的流程。参照图5，核心网通过地面基站获取移动终端发出的注册请求信息，执行TS 3GPP 23502协议中的终端注册流程，接受移动终端的注册，并且在核心网的数据面网元建立数据面数据传输通道。当完成移动终端在核心网的注册后，则会向卫星和核心网接入管理网元发出释放上下文和终端资源的请求，并且释放卫星和核心网数据面网元的数据通道，待旧的卫星端分配的移动终端资源释放完成后，整个强制切换流程完成。
通过执行图5所示强制移动终端切换到地面基站的流程，可以使移动终端在拥有良好的地面基站信号时，始终能优先选择地面基站进行通信，减少通信卫星的压力，保证更良好的通信体验。
需要说明的是，如无特殊说明，当某一特征被称为“固定”、“连接”在另一个特征，它可以直接固定、连接在另一个特征上，也可以间接地固定、连接在另一个特征上。此外，本公开中所使用的上、下、左、右等描述仅仅是相对于附图中本公开各组成部分的相互位置关系来说的。在本公开中所使用的单数形式的“一种”、“所述”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。此外，除非另有定义，本实施例所使用的所有的技术和科学术语与本技术领域的技术人员通常理解的含义相同。本实施例说明书中所使用的术语只是为了描述具体的实施例，而不是为了限制本申请。本实施例所使用的术语“和/或”包括一个或多个相关的所列项目的任意的组合。
应当理解，尽管在本公开可能采用术语第一、第二、第三等来描述各种元件，但这些元件不应限于这些术语。这些术语仅用来将同一类型的元件彼此区分开。例如，在不脱离本公开范围的情况下，第一元件也可以被称为第二元件，类似地，第二元件也可以被称为第一元件。本实施例所提供的任何以及所有实例或示例性语言(“例如”、“如”等)的使用仅意图更好地说明本申请的实施例，并且除非另外要求，否则不会对本申请的范围施加限制。
应当认识到，本申请的实施例可以由计算机硬件、硬件和软件的组合、或者通过存储在非暂时性计算机可读存储器中的计算机指令来实现或实施。所述方法可以使用标准编程技术-包括配置有计算机程序的非暂时性计算机可读存储介质在计算机程序中实现，其中如此配置的存储介质使得计算机以特定和预定义的方式操作——根据在具体实施例中描述的方法和附图。每个程序可以以高级过程或面向对象的编程语言来实现以与计算机***通信。然而，若需要，该程序可以以汇编或机器语言实现。在任何情况下，该语言可以是编译或解释的语言。此外，为此目的该程序能够在编程的专用集成电路上运行。
此外，可按任何合适的顺序来执行本实施例描述的过程的操作，除非本实施例另外指示或以其他方式明显地与上下文矛盾。本实施例描述的过程(或变型和/或其组合)可在配置有可执行指令的一个或多个计算机***的控制下执行，并且可作为共同地在一个或多个处理器上执行的代码(例如，可执行指令、一个或多个计算机程序或一个或多个应用)、由硬件或其组合来实现。所述计算机程序包括可由一个或多个处理器执行的多个指令。
进一步，所述方法可以在可操作地连接至合适的任何类型的计算平台中实现，包括但不限于个人电脑、迷你计算机、主框架、工作站、网络或分布式计算环境、单独的或集成的计算机平台、或者与带电粒子工具或其它成像装置通信等等。本申请的各方面可以以存储在非暂时性存储介质或设备上的机器可读代码来实现，无论是可移动的还是集成至计算平台，如硬盘、光学读取和/或写入存储介质、RAM、ROM等，使得其可由可编程计算机读取，当存储介质或设备由计算机读取时可用于配置和操作计算机以执行在此所描述的过程。此外，机器可读代码，或其部分可以通过有线或无线网络传输。当此类媒体包括结合微处理器或其他数据处理器实现上文所述步骤的指令或程序时，本实施例所述的发明包括这些和其他不同类型的非暂时性计算机可读存储介质。当根据本申请所述的方法和技术编程时，本申请还包括计算机本身。
计算机程序能够应用于输入数据以执行本实施例所述的功能，从而转换输入数据以生成存储至非易失性存储器的输出数据。输出信息还可以应用于一个或多个输出设备如显示器。在本申请优选的实施例中，转换的数据表示物理和有形的对象，包括显示器上产生的物理和有形对象的特定视觉描绘。
以上所述，只是本申请的较佳实施例而已，本申请并不局限于上述实施方式，只要其以相同的手段达到本申请的技术效果，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。在本申请的保护范围内其技术方案和/或实施方式可以有各种不同的修改和变化。

Claims (10)

  1. 一种基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，包括：
    核心网通过与移动终端连接的地面基站，获取所述移动终端发出的第一切换请求；所述第一切换请求包括所述移动终端与所述地面基站之间产生的第一上下文数据；
    响应于所述第一切换请求，所述核心网搜索出目标卫星；所述目标卫星是能与所述移动终端保持最长有效通信时间的通信卫星；
    所述核心网缓存所述第一上下文数据；
    所述核心网向所述目标卫星请求将所述移动终端与所述地面基站之间的连接切换至所述目标卫星；
    当所述目标卫星返回的切换结果为成功，所述核心网将所述移动终端的数据链路修改为与所述目标卫星连接，将缓存的所述第一上下文数据通过所述目标卫星发送至所述移动终端。
  2. 根据权利要求1所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，还包括：
    当所述目标卫星返回的切换结果为成功，所述核心网还向所述地面基站返回所述切换结果，指令所述地面基站释放所述第一上下文数据。
  3. 根据权利要求1或2所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，还包括：
    当所述目标卫星返回的切换结果为失败，所述核心网向所述地面基站返回所述切换结果，将所述移动终端的数据链路维持为与所述地面基站连接，取消对所述第一上下文数据的缓存，将缓存的所述第一上下文数据通过所述地面基站发送至所述移动终端。
  4. 根据权利要求1所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，所述第一切换请求还包括所述移动终端检测到的至少一个通信卫星的卫星标识。
  5. 根据权利要求4所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，所述响应于所述第一切换请求，所述核心网搜索出目标卫星，包括：
    所述核心网根据所述卫星标识，从本地读取相应通信卫星的运行轨迹和运行速度；
    根据所述运行轨迹和所述移动终端的位置信息，确定相应通信卫星的有效通信轨迹；
    根据所述有效通信轨迹与所述运行速度，确定相应通信卫星的有效通信时间；
    将具有最长的所述有效通信时间的通信卫星确定为所述目标卫星。
  6. 根据权利要求1所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，还包括：
    核心网通过所述目标卫星，获取所述移动终端发出的第二切换请求；所述第二切换请求包括所述移动终端与所述目标卫星之间产生的第二上下文数据；
    响应于所述第二切换请求，所述核心网搜索出地面基站；
    所述核心网缓存所述第二上下文数据；
    所述核心网向所述地面基站请求将所述移动终端与所述地面基站之间的连接切换至所述地面基站；
    当所述地面基站返回的切换结果为成功，所述核心网将所述移动终端的数据链路修改为与所述地面基站连接，将缓存的所述第二上下文数据通过所述地面基站发送至所述移动终端。
  7. 根据权利要求6所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，还包括：
    当所述地面基站返回的切换结果为失败，所述核心网将所述移动终端强制切换至与所述地面基站连接。
  8. 根据权利要求7所述的基于地面移动网络和卫星移动网络切换的通信方法，其特征在于，所述核心网将所述移动终端强制切换至与所述地面基站连接，包括：
    所述核心网通过所述地面基站获取所述移动终端发出的注册请求信息；
    响应于所述注册请求信息，所述核心网执行TS 3GPP 23502协议中的终端注册流程，接受所述移动终端的注册，释放所缓存的所述第二上下文数据。
  9. 一种核心网，所述核心网包括接入管理网元和数据面网元，其特征在于，所述核心网用于执行如权利要求1-8任一项所述的基于地面移动网络和卫星移动网络切换的通信方法。
  10. 根据权利要求9所述的核心网，其特征在于，所述接入管理网元为MME网元、AMF网元，所述数据面网元为SGW网元、PGW网元、UPF网元。
PCT/CN2022/083499 2021-04-07 2022-03-28 基于地面移动网络和卫星移动网络切换的通信方法和核心网 WO2022213839A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22783906.5A EP4221018A1 (en) 2021-04-07 2022-03-28 Communication method based on handover of terrestrial mobile network and satellite mobile network and core network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110371376.3A CN113115394B (zh) 2021-04-07 2021-04-07 基于地面移动网络和卫星移动网络切换的通信方法和核心网
CN202110371376.3 2021-04-07

Publications (1)

Publication Number Publication Date
WO2022213839A1 true WO2022213839A1 (zh) 2022-10-13

Family

ID=76714573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/083499 WO2022213839A1 (zh) 2021-04-07 2022-03-28 基于地面移动网络和卫星移动网络切换的通信方法和核心网

Country Status (3)

Country Link
EP (1) EP4221018A1 (zh)
CN (1) CN113115394B (zh)
WO (1) WO2022213839A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117119454A (zh) * 2023-10-24 2023-11-24 北京盛安同力科技开发有限公司 一种终端异构网络中的终端通信方法
WO2024131141A1 (zh) * 2022-12-19 2024-06-27 华为技术有限公司 通信方法、通信装置及通信***

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113115394B (zh) * 2021-04-07 2022-02-01 广州爱浦路网络技术有限公司 基于地面移动网络和卫星移动网络切换的通信方法和核心网
CN114025399B (zh) * 2021-10-22 2022-10-11 爱浦路网络技术(南京)有限公司 低轨卫星切换控制方法、核心网设备、装置和存储介质
CN113890592B (zh) * 2021-10-27 2022-05-24 广州爱浦路网络技术有限公司 通信卫星切换方法、天地一体化信息网络***、装置和介质
CN114221693B (zh) * 2021-12-30 2022-10-11 广州爱浦路网络技术有限公司 卫星接入控制方法、***、装置及存储介质
CN115103360B (zh) * 2022-06-21 2023-06-06 广州爱浦路网络技术有限公司 卫星通信中的用户终端鉴权方法、卫星通信***、计算机装置及存储介质
CN115022806B (zh) * 2022-07-18 2023-05-09 广州爱浦路网络技术有限公司 终端定位方法及装置
CN115915138B (zh) * 2022-11-14 2023-06-27 之江实验室 一种共享5g天地一体化网络信令交互架构的方法
CN116155364B (zh) * 2023-03-02 2023-08-29 广州爱浦路网络技术有限公司 多卫星协作通信的接入方法及卫星通信***
CN116227929B (zh) * 2023-03-07 2024-03-19 广州爱浦路网络技术有限公司 通信数据的分析方法、装置、设备及存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103634041A (zh) * 2012-08-21 2014-03-12 北京盛安同力科技开发有限公司 一种基于新一代卫星通信***的会话管理方法、***及装置
US20150271730A1 (en) * 2014-03-19 2015-09-24 Hughes Network Systems, Llc Apparatus and method for efficient handover for low earth orbit (leo) satellite systems
CN110429975A (zh) * 2019-09-05 2019-11-08 海能达通信股份有限公司 卫星切换方法及装置
CN111711973A (zh) * 2020-06-04 2020-09-25 上海金卓网络科技有限公司 切换通信网的方法、装置、电子设备、及存储介质
CN113115394A (zh) * 2021-04-07 2021-07-13 广州爱浦路网络技术有限公司 基于地面移动网络和卫星移动网络切换的通信方法和核心网

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9408129B2 (en) * 2014-06-17 2016-08-02 Gogo Llc Multiple modem communication system and method for a mobile platform
US11088946B2 (en) * 2017-01-19 2021-08-10 Hughes Network Systems, Llc System and method to separately route cellular voice and data traffic to different locations with a satellite backhaul
CN110535521B (zh) * 2018-05-25 2021-01-29 北京邮电大学 天地一体化网络的业务传输方法和装置
CN110972217B (zh) * 2018-09-30 2021-12-03 大唐移动通信设备有限公司 一种卫星基站接入控制方法、设备及可读存储介质
CN112055388B (zh) * 2019-06-06 2021-11-19 华为技术有限公司 用于切换的方法和装置
CN111132250B (zh) * 2019-12-25 2022-08-16 上海微波技术研究所（中国电子科技集团公司第五十研究所） 一种终端无定位能力的非地面网络切换方法及***

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103634041A (zh) * 2012-08-21 2014-03-12 北京盛安同力科技开发有限公司 一种基于新一代卫星通信***的会话管理方法、***及装置
US20150271730A1 (en) * 2014-03-19 2015-09-24 Hughes Network Systems, Llc Apparatus and method for efficient handover for low earth orbit (leo) satellite systems
CN110429975A (zh) * 2019-09-05 2019-11-08 海能达通信股份有限公司 卫星切换方法及装置
CN111711973A (zh) * 2020-06-04 2020-09-25 上海金卓网络科技有限公司 切换通信网的方法、装置、电子设备、及存储介质
CN113115394A (zh) * 2021-04-07 2021-07-13 广州爱浦路网络技术有限公司 基于地面移动网络和卫星移动网络切换的通信方法和核心网

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TS 3GPP 23502

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024131141A1 (zh) * 2022-12-19 2024-06-27 华为技术有限公司 通信方法、通信装置及通信***
CN117119454A (zh) * 2023-10-24 2023-11-24 北京盛安同力科技开发有限公司 一种终端异构网络中的终端通信方法
CN117119454B (zh) * 2023-10-24 2024-01-19 北京盛安同力科技开发有限公司 一种终端异构网络中的终端通信方法

Also Published As

Publication number Publication date
EP4221018A1 (en) 2023-08-02
CN113115394A (zh) 2021-07-13
CN113115394B (zh) 2022-02-01

Similar Documents

Publication Publication Date Title
WO2022213839A1 (zh) 基于地面移动网络和卫星移动网络切换的通信方法和核心网
CN108174421B (zh) 一种5g网络中基于mec辅助的数据分流方法
KR102409642B1 (ko) 핸드오버를 지원하는 방법 및 상응하는 기지국 및 네트워크 노드
WO2018166336A1 (zh) 一种发起用户面路径重建的方法、装置及通信***
CN114025399B (zh) 低轨卫星切换控制方法、核心网设备、装置和存储介质
WO2021031624A1 (zh) 信息的传输方法及装置、存储介质和电子装置
CN114205878B (zh) 通信方法及装置
CN113115393A (zh) 地面移动网络、卫星移动网络、核心网及通信方法
WO2019072067A1 (zh) 一种下行报文处理方法、upf设备和存储介质
WO2021190244A1 (zh) 一种切换方法及基站
CN114095073B (zh) 一种5g卫星融合场景中的无缝切换方法
WO2014161450A1 (zh) 一种基站配置变更时的用户设备切换方法、装置及***
US20220353750A1 (en) Method and device for supporting handover
CN116347534A (zh) 一种卫星切换方法、装置、存储介质和芯片***
CN102573066B (zh) 一种传输rn信息、寻呼ue的方法及装置
US11343738B2 (en) Handover-based connection resume technique
JP7013423B2 (ja) ハンドオーバーでのアップリンクベアラーバインディング
CN102647761B (zh) 一种sgw重定向的x2切换的处理方法和装置
US20220353636A1 (en) Positioning configuration method and electronic device
CN115833916A (zh) 卫星基站切换方法、装置、卫星基站及存储介质
WO2024026640A1 (en) Apparatus, method, and computer program
Wu et al. Accelerating Handover in Mobile Satellite Network
CN111586768A (zh) 切换方法及装置
WO2023169398A1 (zh) 网络确定方法、网络接入方法、数据传输方法及相关设备
WO2023108662A1 (zh) 数据发送方法、装置、设备及存储介质

Legal Events

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

Ref document number: 22783906

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022783906

Country of ref document: EP

Effective date: 20230425

NENP Non-entry into the national phase

Ref country code: DE