WO2022206617A1 - Procédé, appareil et système de communication - Google Patents

Procédé, appareil et système de communication Download PDF

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Publication number
WO2022206617A1
WO2022206617A1 PCT/CN2022/083140 CN2022083140W WO2022206617A1 WO 2022206617 A1 WO2022206617 A1 WO 2022206617A1 CN 2022083140 W CN2022083140 W CN 2022083140W WO 2022206617 A1 WO2022206617 A1 WO 2022206617A1
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WO
WIPO (PCT)
Prior art keywords
application
network element
server
application server
terminal
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Application number
PCT/CN2022/083140
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English (en)
Chinese (zh)
Inventor
陈泽昊
李永翠
葛翠丽
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华为技术有限公司
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Publication of WO2022206617A1 publication Critical patent/WO2022206617A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1023—Server selection for load balancing based on a hash applied to IP addresses or costs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/563—Data redirection of data network streams

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method, device, and system.
  • the current The edge application server providing services may not be able to continue to provide services for the currently running application, or the edge application server currently providing services is no longer the optimal application server that can provide services for the terminal, and other edge application servers may be more suitable for the terminal.
  • the application client service on the terminal so it is necessary to replace the current edge application server (called the source edge application server, S-EAS) with a new edge application server (called the target edge application server, T-EAS) as The terminal provides services.
  • the relevant application context needs to be migrated from the S-EAS to the T-EAS.
  • the application service will be temporarily suspended or interrupted, thereby affecting the business continuity and user experience.
  • Embodiments of the present application provide a communication method, device, and system.
  • the method is used to refer to the migration completion time of each first application server for the terminal's application context when selecting a target application server for a terminal, so as to achieve the selected target
  • the application server can better serve the terminal.
  • an embodiment of the present application provides a communication method.
  • the method includes: a first network element obtains, by a first network element, information about an application context of a terminal for each first application server in one or more first application servers associated with the first network element. Migration completion time.
  • the first network element sends the migration completion time of the application context of each first application server to the terminal to the second network element.
  • the application context is the information of the first application for the terminal on the second application server currently serving the terminal.
  • the migration completion time of each first application server for the terminal's application context is used to determine a target application server that provides services for the terminal among the one or more first application servers.
  • An embodiment of the present application provides a communication method.
  • the application context of the terminal on the second application server needs to be migrated to the target application server , although one or more first application servers can provide services for the terminal, due to the difference in the migration completion time required for the application context to migrate to each first application server, during the application context migration process, it will cause the terminal to The application service is temporarily suspended or interrupted, so the migration completion time will affect the operation of the first application of the terminal.
  • the first network element obtains the migration completion time of each first application server for the application context of the terminal .
  • the first network element provides the second network element with the migration completion time of each first application server for the application context of the terminal.
  • the second network element can be assisted to select a target application server from one or more first application servers according to the migration completion time of each first application server for the application context of the terminal, thereby minimizing the impact of the migration completion time on application interruption. , so that the selected target application server can better serve the terminal.
  • the first network element obtains the migration completion time of the application context of the terminal for each first application server in one or more first application servers associated with the first network element, including: The first network element acquires, from each first application server, the migration completion time of each first application server's respective application context for the terminal.
  • the first application server automatically calculates the migration completion time of each application context for the terminal, which reduces the processing burden of the first network element.
  • the The method further includes: the first network element sending, to each first application server, a first request message for requesting the first application server to complete the migration of the application context of the terminal. So as to realize that the first application server provides the first network element with the migration completion time for the application context of the terminal based on the request from the first network element.
  • the method provided by the embodiment of the present application further includes: the first network element sends to each first application server one of the second related information of the second application server and the size of the application context item or multiple items.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server.
  • the first related information/second related information involved in the embodiment of the present application includes any information that has an impact on determining the completion time of the migration of the application context of the migrated terminal, and is not limited to location information, load information or One or more of the network conditions, the present application only takes the location information, load information or network conditions as an example to illustrate.
  • the first request message includes one or more items of the second related information of the second application server and the size of the application context, which can reduce signaling overhead.
  • the first application server calculates the migration completion time in order to calculate the migration completion time. , can obtain one or more of the second related information of the second application server, the size of the application context, for example, the first application server can obtain the second application server from the first enabling server or the second application server One or more of the second related information of , and the size of the application context. Then, at this time, the first request message may include one or more of the identifier of the first enabling server and the identifier of the second application server.
  • the first network element is the second enabling server
  • the first request message carries the identifier of the first enabling server, and the second One or more of the identity of the application server.
  • the first request message carries the identifier of the second application server.
  • the first enabling server is an enabling server that provides services for the terminal before the enabling server is replaced, and the first enabling server is associated with the second application server.
  • the second enabling server is an enabling server that provides services for the terminal after replacement.
  • the third enabling server is the enabling server that currently provides services for the terminal.
  • the first network element obtains the migration completion time of the application context of the terminal for each first application server in one or more first application servers associated with the first network element, including: The first network element receives the migration completion time of the application context of each first application server for the terminal from the third network element.
  • the third network element is a data analysis network element or an edge configuration server or a policy control network element. The third network element calculates the migration completion time of each first application server for the application context of the terminal, which reduces the processing burden of the first network element.
  • the method provided in the embodiment of the present application further includes: the first network element sends a transfer completion time for requesting each first application server to the terminal's application context to the third network element the second request message.
  • the method provided in the embodiment of the present application further includes: the first network element sends the first related information of each first application server and the first relevant information of each first application server to the third network element 2.
  • the first related information includes one or more of location information, load information or network conditions of the first application server.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server. This prevents the third network element from collecting information by itself.
  • one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context are carried in the second request message, which can reduce signaling overhead.
  • the third network element can obtain the first related information of each first application server from each first application server according to the identifier of each first application server provided by the first network element in the second request message , or obtain one or more items of the second related information of the second application server and the size of the application context from the first enabling server or the second application server.
  • the second request message may include one or more of the identifier of each first application server, the identifier of the first enabling server, and the identifier of the second application server.
  • the method provided in the embodiment of the present application further includes: the first network element obtains one or more of the second related information of the second application server and the size of the application context.
  • the method provided by the embodiment of the present application further includes: the first network element obtains the first related information of each first application server.
  • the first network element acquires one or more first application servers associated with the first network element, and the migration completion time of each first application server for the terminal's application context includes the following: : The first network element obtains one or more items of the first related information of each first application server, the second related information of the second application server, and the size of the application context. The first network element determines, according to one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context, the respective information of each first application server for the terminal. The migration completion time of the application context. In this solution, the first network element can calculate the migration completion time of the application context of each first application server for the terminal by itself according to the acquired information.
  • the first network element acquiring one or more of the second related information of the second application server and the size of the application context, including: the first network element receiving information from the second application One or more of the second related information of the server and/or the second application server of the first enabled server, the size of the application context.
  • the first enabling server is associated with the second application server.
  • the first network element receives one of the second related information and the size of the application context from the second application server and/or the second application server of the first enabling server or more before, the method provided by the embodiment of the present application further includes: the first network element sends the second related information and the size of the application context to the second application server and/or the first enabling server for requesting the second application server A third request message for one or more of .
  • acquiring the first related information of each first application server by the first network element includes: the first network element sending a request for the first application server to each first application server The fourth request message for the first related information.
  • the first network element receives the respective first related information of each first application server.
  • the method provided by the embodiment of the present application further includes: the first network element receives the first network element from the second network element The identifier of the enabling server, the first enabling server is associated with the second application server.
  • the first network element is a third enabling server or a second enabling server
  • the second network element is an edge enabler client (Edge Enabler Client, EEC) or a second enabling server application server.
  • EEC Edge Enabler Client
  • the first network element may be, for example, the second enabling server
  • the second network element is the EEC.
  • the first enabling server is an enabling server that provides a server for the terminal before the enabling server is replaced.
  • the second enabling server is an enabling server that provides services for the terminal after replacement.
  • the first network element is the third enabling server
  • the second network element is the EEC
  • the third enabling server is the enabling server currently accessed by the terminal.
  • the first network element may be, for example, the first enabling server
  • the second network element may be the second application server.
  • an embodiment of the present application provides a communication method, including: a first network element acquiring second information.
  • the second information includes one of the first related information of each of the one or more first application servers associated with the first network element, the second related information of the second application server, and the size of the application context or more.
  • the application context is information of the first application for the terminal on the second application server that currently provides services for the terminal.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server.
  • the first related information includes one or more of location information, load information, or network conditions of the first application server.
  • the first network element sends second information to the second network element, where the second information is used to determine a target application server that provides services for the terminal among the one or more first application servers.
  • An embodiment of the present application provides a communication method.
  • the application context of the terminal on the second application server needs to be migrated to the target application server , although one or more first application servers can provide services for the terminal, due to the difference in the migration completion time required for the application context to be migrated to each first application server, during the application context migration process, it will cause the terminal
  • the application service is temporarily suspended or interrupted, so the migration completion time will affect the operation of the first application of the terminal.
  • the first network element obtains the second information and provides the second network element with the second information.
  • the second information includes one of the first related information of each of the one or more first application servers associated with the first network element, the second related information of the second application server, and the size of the application context or more.
  • the content contained in the second information can be used to determine the completion time of the migration of the application context of each first application server for the terminal. Therefore, after the first network element provides the second information to the second network element, it is convenient for the second network element to The element determines, from one or more first application servers, a target application server that provides services for the terminal according to the second information.
  • the first network element acquiring one or more of the second related information of the second application server and the size of the application context, including: the first network element receiving information from the second application One or more of the second related information of the server or the second application server of the first enabling server, and the size of the application context, the first enabling server is associated with the second application server.
  • the method provided by the embodiment of the present application further includes: the first network element sends a third request message to the second application server or the first enabling server.
  • the third request message is used to request one or more of the second related information of the second application server and the size of the application context.
  • obtaining the first related information of each first application server by the first network element includes: the first network element sending a fourth request message to each first application server.
  • the fourth request message is used to request the first related information of the first application server.
  • the first network element receives the respective first related information of each first application server.
  • the method provided by the embodiment of the present application further includes: the first network element receiving identification information of the first enabling server from the second network element.
  • the first enabling server is associated with the second application server.
  • the method provided in the embodiment of the present application further includes: the first network element receives a request from the first enabler The server sends a fifth request message, where the fifth request message is used to request first related information of at least one second application server associated with the first network element.
  • the fifth request message includes first indication information, where the first indication information is used to instruct the first network element to provide the first correlation information of each second application server associated with the first network element information.
  • an embodiment of the present application provides a communication method, the method comprising: a second network element receiving from one or more first application servers of the first network element an application context of each first application server for a terminal Migration completion time.
  • the second network element determines a target application server for providing services to the terminal from one or more first application servers according to the completion time of migration of the application context of the terminal by each first application server.
  • the method provided by the embodiment of the present application further includes: the second network element sends the identifier of the first enabling server to the first network element, and the first enabling server is associated with the second application server. In this way, it is convenient for the first network element to determine the enabling server that provided services for the terminal before.
  • an embodiment of the present application provides a communication method, the method comprising: a second network element receiving second information from a first network element, where the second information includes each of one or more first application servers One or more items of the first related information of the first application server, the second related information of the second application server, and the size of the application context.
  • the application context is the information of the first application for the terminal on the second application server, and the second application server is the application server that currently provides services for the terminal;
  • the second related information includes the location information, load information or network conditions of the second application server
  • the first related information includes one or more of the location information, load information or network conditions of the first application server;
  • the second network element obtains information from one or more first application servers according to the second information
  • a target application server is determined, and the target application server is used to provide services for the terminal.
  • the method provided in this embodiment of the present application further includes: the second network element sends the first network element the identifier of the first enabling server information.
  • the first enabling server is associated with the second application server.
  • the second network element determines the target application server from one or more first application servers according to the second information, including: the second network element determines each Completion time of migration of the application context of the terminal by the first application server.
  • the second network element determines a target application server from one or more first application servers according to the completion time of migration of the application context of the terminal for each first application server.
  • an embodiment of the present application provides a communication method, including: a first application server determining a migration completion time of an application context of the first application server for a terminal, the application context being on a second application server currently serving the terminal Information about the first application of the terminal; the first application server sends the migration completion time of the first application server for the application context of the terminal to the first network element.
  • the first application server determining the completion time of the migration of the application context of the terminal by the first application server includes: the first application server acquiring the second related information of the second application server, the application context one or more of the sizes.
  • the first application server determines, according to one or more of the first related information of the first application server, the second related information of the second application server, and the size of the application context, that the migration of the application context of the terminal by the first application server is complete time.
  • the method provided in this embodiment of the present application may further include: the first application server receives data from the first application server The first request message of a network element. The first request message is used to request the first application server to complete the migration of the application context of the terminal.
  • the first application server obtains one or more of the second related information of the second application server and the size of the application context, including: the first application server obtains from the first network element
  • One or more items of the second related information of the second application server and the size of the application context are obtained from the second application server or the first enabling server.
  • the first application server may obtain the identification information of the second application server or the first enabling server from the first network element.
  • the first request message carries the identifier of the second application server or the identifier of the first enabling server.
  • the first request message carries the identifier of the second application server and/or the identifier of the first enabling server.
  • the first request message carries the identifier of the second application server, and the first network element is the third enabling server at this time.
  • the first application server obtains the second related information of the second application server, the size of the application context from the first network element or the second application server or the first enabling server.
  • One or more items including: the first application server receives one or more of the second related information and the size of the application context from the first network element or the second application server or the second application server of the first enabling server item.
  • the information may be actively sent to the first application server by the first network element or the second application server or the first enabling server, or may be sent to the first application server based on a trigger of the first application server.
  • the first application server receives one or more items of the second related information and the size of the application context from the first network element, specifically, the first request message includes the second One or more items of the second related information of the application server and the size of the application context.
  • the first application server receives one or more of the second related information and the size of the application context from the second application server or the second application server of the first enabling server , it may further include that the first application server sends a request message to the second application server or the first enabling server for requesting one or more of the second related information of the second application server and the size of the application context.
  • an embodiment of the present application provides a communication method, including: a third network element determining a migration completion time of an application context of a terminal for each first application server in one or more first application servers, where the application context is: Information about the first application for the terminal on the second application server currently serving the terminal.
  • the third network element sends, to the first network element, the migration completion time of each first application server for the application context of the terminal.
  • the third network element determining the completion time of migration of the application context of the terminal by each of the one or more first application servers includes: the third network element obtains each The first relevant information of the first application server, and/or the third network element obtains one or more of the second relevant information of the second application server and the size of the application context.
  • the third network element determines, according to one or more of the following information: the first related information of each first application server, the second related information of the second application server, and the size of the application context, that each first application server is intended for The migration completion time of the application context of the terminal.
  • the method provided by the embodiment of the present application It also includes: the third network element receives one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context from the first network element.
  • the first related information includes one or more of location information, load information or network conditions of the first application server.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server. This prevents the third network element from collecting information by itself.
  • the method provided by the embodiment of the present application It also includes: the third network element receives a second request message from the first network element, where the second request message is used to request that the migration of the application context of the terminal by each of the one or more first application servers is completed time.
  • the second request message carries one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context.
  • the third network element obtains one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context from the first network element.
  • the respective first relevant information of each first application server may also be collected from each first application server, and at this time, the first network element may provide the third network element with the identifier of each first application server.
  • the third network element may also obtain one or more items of the second related information of the second application server and the size of the application context from the second application server or the first enabling server.
  • a network element obtains the identifier of the second application server or the identifier of the first enabling server, which is not limited in this embodiment of the present application.
  • an embodiment of the present application provides a communication device, which can implement the first aspect or the method in any possible implementation manner of the first aspect, and thus can also implement the first aspect or any possible implementation manner of the first aspect.
  • the communication device may be the first network element, or may be a device that supports the first network element to implement the method in the first aspect or any possible implementation manner of the first aspect, for example, a chip applied to the first network element.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • an embodiment of the present application provides a communication apparatus, the communication apparatus includes: a communication unit and a processing unit, wherein the processing unit is used for processing information.
  • the processing unit is configured to obtain the migration completion time of the application context of the terminal by each of the one or more first application servers associated with the first network element.
  • the communication unit sends the migration completion time of the application context of each first application server to the terminal to the second network element.
  • the application context is the information of the first application for the terminal on the second application server currently serving the terminal.
  • the migration completion time of each first application server for the terminal's application context is used to determine a target application server that provides services for the terminal among the one or more first application servers.
  • the processing unit is configured to obtain, through the communication unit, the migration completion time of the application context of each first application server for the terminal from each first application server.
  • the communication unit is configured to send, to each first application server, a first request message for requesting the first application server to complete the migration of the application context of the terminal.
  • the communication unit is configured to send one or more items of the second related information of the second application server and the size of the application context to each first application server.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server.
  • the first request message includes one or more items of the second related information of the second application server and the size of the application context, which can reduce signaling overhead.
  • the first application server calculates the migration completion time in order to calculate the migration completion time. , can obtain one or more of the second related information of the second application server, the size of the application context, for example, the first application server can obtain the second application server from the first enabling server or the second application server One or more of the second related information of , and the size of the application context. Then, at this time, the first request message may include one or more of the identifier of the first enabling server and the identifier of the second application server.
  • the enabling server that provides services for the terminal changes from the first enabling server to the second enabling server.
  • the first request message contains Carrying one or more of the identifier of the first enabling server and the identifier of the second application server.
  • the first request message carries the identifier of the second application server.
  • the first enabling server is an enabling server that provides services for the terminal before the replacement
  • the first enabling server is associated with the second application server
  • the second enabling server is an enabling server that provides services for the terminal after the enabling server is replaced.
  • the third enabling server is the enabling server that currently provides services for the terminal.
  • the processing unit is configured to receive, through the communication unit, the migration completion time of the application context of the terminal from each first application server of the third network element.
  • the third network element is a data analysis network element or an edge configuration server or a policy control network element.
  • the communication unit is further configured to send, to the third network element, a second request message for requesting the completion time of migration of the application context of the terminal by each first application server.
  • the communication unit is further configured for the first network element to send the first related information of each first application server, the second related information of the second application server, One or more of the size of the application context.
  • the first related information includes one or more of location information, load information or network conditions of the first application server.
  • one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context are carried in the second request message, which can reduce signaling overhead.
  • the third network element can obtain the first related information of each first application server from each first application server according to the identifier of each first application server provided by the first network element in the second request message , or obtain one or more items of the second related information of the second application server and the size of the application context from the first enabling server or the second application server.
  • the second request message may include one or more of the identifier of each first application server, the identifier of the first enabling server, and the identifier of the second application server.
  • the communication unit is further configured to acquire one or more of the second related information of the second application server and the size of the application context.
  • the communication unit is further configured to acquire the first related information of each first application server.
  • the processing unit is configured to obtain, through the communication unit, one of the first related information of each first application server, the second related information of the second application server, and the size of the application context. item or multiple items.
  • the processing unit is configured to determine, according to one or more items of the first related information of each first application server, the second related information of the second application server, and the size of the application context, that each first application server is specific to the terminal. The migration completion time of the application context.
  • the communication unit is specifically configured to receive one of the second related information and the size of the application context from the second application server and/or the second application server of the first enabling server. item or multiple items.
  • the first enabling server is associated with the second application server.
  • the communication unit is further configured to send the second relevant information and the size of the application context to the second application server and/or the first enabling server for requesting the second application server One or more of the third request messages.
  • the communication unit is further configured to send a fourth request message for requesting the first related information of the first application server to each first application server.
  • the first network element receives the respective first related information of each first application server.
  • the communication unit is further configured for the first network element to receive information from the first enabling server of the second network element identification, the first enabling server is associated with the second application server.
  • the first network element is a third enabling server or a second enabling server
  • the second network element is an edge enabler client (Edge Enabler Client, EEC) or a second enabling server application server.
  • EEC Edge Enabler Client
  • the first network element may be, for example, the second enabling server
  • the second network element is the EEC.
  • the first enabling server is the enabling server that provides the server for the terminal before the replacement.
  • the second enabling server is an enabling server that provides services for the terminal after replacement.
  • the first network element is the third enabling server
  • the second network element is the EEC
  • the third enabling server is the enabling server currently accessed by the terminal .
  • the first network element may be, for example, the first enabling server
  • the second network element may be the second application server.
  • the processing unit may be a processor, and the communication unit may be a communication interface.
  • the communication interface may be an input/output interface, a pin or a circuit, or the like.
  • the processing unit executes the instructions stored in the storage unit, so that the first network element implements a communication method described in the first aspect or any possible implementation manner of the first aspect.
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first network element located outside the chip (for example, a read-only memory, a random access memory, etc.) .
  • an embodiment of the present application provides a communication device.
  • the communication device can implement the method in the second aspect or any possible implementation manner of the second aspect, and therefore can also implement the second aspect or any possible implementation manner of the second aspect.
  • the communication device may be the first network element, or may be a device that supports the first network element to implement the method in the second aspect or any possible implementation manner of the second aspect, for example, a chip applied to the first network element.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • an embodiment of the present application provides a communication apparatus, the communication apparatus includes: a communication unit and a processing unit, wherein the processing unit is used for processing information.
  • the communication unit is used for acquiring the second information.
  • the second information includes one of the first related information of each of the one or more first application servers associated with the first network element, the second related information of the second application server, and the size of the application context or more.
  • the application context is information of the first application for the terminal on the second application server that currently provides services for the terminal.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server.
  • the first related information includes one or more of location information, load information, or network conditions of the first application server.
  • the communication unit is further configured to send second information to the second network element, where the second information is used to determine a target application server that provides services for the terminal among the one or more first application servers.
  • the first network element acquires one or more of the second related information of the second application server and the size of the application context, including: a communication unit for acquiring the second information , comprising: a communication unit configured to receive one or more items of the second related information and the size of the application context from the second application server or the second application server of the first enabling server.
  • the first enabling server is associated with the second application server.
  • the communication unit is further configured to send a third request message to the second application server or the first enabling server.
  • the third request message is used to request one or more of the second related information of the second application server and the size of the application context.
  • the communication unit is further configured to send a fourth request message to each first application server.
  • the fourth request message is used to request the first related information of the first application server.
  • the communication unit is configured to receive the respective first related information of each first application server.
  • the communication unit is further configured to receive identification information of the first enabling server from the second network element.
  • the first enabling server is associated with the second application server.
  • the communication unit is further configured to receive a fifth request message sent from the first enabling server, where the fifth request message is used to request at least one second application server associated with the first network element first relevant information.
  • the fifth request message includes first indication information, where the first indication information is used to instruct the first network element to provide the first correlation information of each second application server associated with the first network element information.
  • the processing unit may be a processor, and the communication unit may be a communication interface.
  • the communication interface may be an input/output interface, a pin or a circuit, or the like.
  • the processing unit executes the instructions stored in the storage unit, so that the first network element implements a communication method described in the second aspect or any possible implementation manner of the second aspect.
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first network element located outside the chip (for example, a read-only memory, a random access memory, etc.) .
  • an embodiment of the present application provides a communication device, which can implement the third aspect or the method in any possible implementation manner of the third aspect, and thus can also implement the third aspect or any possible implementation manner of the third aspect.
  • the communication device may be the second network element, or may be a device that supports the second network element to implement the method in the third aspect or any possible implementation manner of the third aspect, such as a chip applied to the second network element.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • an embodiment of the present application provides a communication apparatus, the communication apparatus includes: a communication unit and a processing unit, wherein the processing unit is used for processing information.
  • the communication unit is configured to receive, from the first network element, the migration completion time of the application context of the terminal by each of the one or more first application servers of the first application server.
  • the communication unit is configured to determine, from one or more first application servers, a target application server for providing services to the terminal according to the completion time of migration of the application context of the terminal by each first application server.
  • the communication unit is further configured to send identification information of the first enabling server to the first network element, where the first enabling server is associated with the second application server.
  • the processing unit may be a processor, and the communication unit may be a communication interface.
  • the communication interface may be an input/output interface, a pin or a circuit, or the like.
  • the processing unit executes the instructions stored in the storage unit, so that the second network element implements a communication method described in the third aspect or any possible implementation manner of the third aspect.
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the second network element located outside the chip (for example, a read-only memory, a random access memory, etc.) .
  • an embodiment of the present application provides a communication device, which can implement the fourth aspect or the method in any possible implementation manner of the fourth aspect, and thus can also implement the fourth aspect or any possible implementation manner of the fourth aspect.
  • the communication device may be the second network element, or may be a device that supports the second network element to implement the method in the fourth aspect or any possible implementation manner of the fourth aspect, for example, a chip applied to the second network element.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • an embodiment of the present application provides a communication apparatus, the communication apparatus includes: a communication unit and a processing unit, wherein the processing unit is used for processing information.
  • a communication unit configured to receive second information from the first network element, where the second information includes first related information of each of the one or more first application servers, second information of the second application server One or more of related information, the size of the application context.
  • the application context is the information of the first application for the terminal on the second application server, and the second application server is the application server that currently provides services for the terminal;
  • the second related information includes the location information, load information or network conditions of the second application server
  • the first relevant information includes one or more of the location information, load information or network conditions of the first application server;
  • the processing unit is configured to, according to the second information, retrieve information from one or more of the first application servers
  • the target application server is determined in the target application server, and the target application server is used to provide services for the terminal.
  • the communication unit is further configured to send the identification information of the first enabling server to the first network element.
  • the first enabling server is associated with the second application server.
  • the processing unit is configured to determine, according to the second information, the migration completion time of each first application server for the application context of the terminal.
  • the processing unit is configured to determine a target application server from one or more first application servers according to the migration completion time of each first application server for the application context of the terminal.
  • the processing unit may be a processor, and the communication unit may be a communication interface.
  • the communication interface may be an input/output interface, a pin or a circuit, or the like.
  • the processing unit executes the instructions stored in the storage unit, so that the second network element implements the communication method described in the fourth aspect or any possible implementation manner of the fourth aspect.
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the second network element located outside the chip (for example, a read-only memory, a random access memory, etc.) .
  • an embodiment of the present application provides a communication device, which can implement the method in the fifth aspect or any possible implementation manner of the fifth aspect, and thus can also implement the fifth aspect or any possible implementation manner of the fifth aspect.
  • the beneficial effect in the realization way may be a first application server, or may be a device that supports the first application server to implement the method in the fifth aspect or any possible implementation manner of the fifth aspect, such as a chip applied to the first application server.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • an embodiment of the present application provides a communication apparatus, the communication apparatus includes: a communication unit and a processing unit, wherein the processing unit is used for processing information.
  • the processing unit is configured to determine the migration completion time of the application context of the first application server for the terminal, where the application context is information of the first application for the terminal on the second application server currently serving the terminal.
  • the communication unit is configured to send the migration completion time of the application context of the terminal by the first application server to the first network element.
  • the communication unit is configured to acquire one or more of the second related information of the second application server and the size of the application context.
  • a processing unit configured to determine, according to one or more of the first related information of the first application server, the second related information of the second application server, and the size of the application context, the migration of the application context of the terminal by the first application server Complete time.
  • the communication unit is further configured to receive the first request message from the first network element.
  • the first request message is used to request the first application server to complete the migration of the application context of the terminal.
  • the communication unit is configured to obtain the second related information of the second application server and the size of the application context from the first network element or the second application server or the first enabling server.
  • the first application server may obtain the identification information of the second application server or the first enabling server from the first network element.
  • the first request message carries the identifier of the second application server or the identifier of the first enabling server.
  • the first request message carries the identifier of the second application server and/or the identifier of the first enabling server.
  • the first request message carries the identifier of the second application server, and the first network element is the third enabling server at this time.
  • the communication unit is configured to receive the second related information, the size of the application context from the first network element or the second application server or the second application server of the first enabling server one or more of the.
  • the information may be actively sent by the first network element or the second application server or the first enabling server to the first application server, or may be sent to the first application server based on a trigger of the first application server.
  • the communication unit is configured to receive one or more items of the second related information and the size of the application context from the first network element, specifically, the first request message includes the first request message. 2. One or more items of the second related information of the application server and the size of the application context.
  • the communication unit is further configured to send to the second application server or the first enabling server one of the second related information for requesting the second application server and the size of the application context A request message for one or more items.
  • the processing unit may be a processor, and the communication unit may be a communication interface.
  • the communication interface may be an input/output interface, a pin or a circuit, or the like.
  • the processing unit executes the instructions stored in the storage unit, so that the first application server implements a communication method described in the fifth aspect or any possible implementation manner of the fifth aspect.
  • the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first application server located outside the chip (for example, a read-only memory, a random access memory, etc.) .
  • an embodiment of the present application provides a communication device, which can implement the sixth aspect or the method in any possible implementation manner of the sixth aspect, and thus can also implement the sixth aspect or any possible implementation manner of the sixth aspect.
  • the beneficial effect in the realization way may be a third network element, or may be a device that supports the third network element to implement the method in the sixth aspect or any possible implementation manner of the sixth aspect, such as a chip applied to the third network element.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • an embodiment of the present application provides a communication apparatus, the communication apparatus includes: a communication unit and a processing unit, wherein the processing unit is used for processing information.
  • the processing unit is configured to determine the migration completion time of the application context of each first application server in the one or more first application servers for the terminal, where the application context is the first application context for the terminal on the second application server currently serving the terminal. an application information.
  • the communication unit is configured to send the migration completion time of the application context of each first application server for the terminal to the first network element.
  • the communication unit is configured to acquire the first related information of each first application server, and/or the communication unit is configured to acquire the second related information of the second application server, One or more of the size of the application context.
  • a processing unit configured to determine each first application server's respective The migration completion time of the application context for the terminal.
  • the communication unit is further configured to receive the first related information of each first application server, the second related information of the second application server, the application context information from the first network element one or more of the size.
  • the first related information includes one or more of location information, load information or network conditions of the first application server.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server. This prevents the third network element from collecting information by itself.
  • the communication unit is further configured for the third network element to receive a second request message from the first network element, where the second request message is used to request one or more first application servers The migration completion time of the application context of each first application server in the terminal.
  • the second request message carries one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context.
  • the communication unit in addition to obtaining one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context from the first network element, the communication unit,
  • the respective first relevant information of each first application server may also be collected from each first application server, and at this time, the communication unit may provide the identification of each first application server to the third network element.
  • the communication unit is further configured to obtain one or more items of the second related information of the second application server and the size of the application context from the second application server or the first enabling server.
  • the first network element obtains the identifier of the second application server or the identifier of the first enabling server, which is not limited in this embodiment of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer executes the steps from the first aspect to the A communication method described in any possible implementation manner of the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction runs on a computer, the computer executes the steps from the second aspect to the A communication method described in any possible implementation manner of the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer executes the steps from the third aspect to the A communication method described in any possible implementation manner of the third aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer executes the steps from the fourth aspect to the A communication method described in any possible implementation manner of the fourth aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer executes the steps from the fifth aspect to the A communication method described in any possible implementation manner of the fifth aspect.
  • embodiments of the present application provide a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer executes the steps from the sixth aspect to the A communication method described in any possible implementation manner of the sixth aspect.
  • an embodiment of the present application provides a computer program product including instructions, which, when the instructions are run on a computer, cause the computer to execute a communication described in the first aspect or various possible implementations of the first aspect method.
  • the embodiments of the present application provide a computer program product including instructions, when the instructions are run on a computer, the computer causes the computer to execute a communication described in the second aspect or various possible implementations of the second aspect method.
  • the embodiments of the present application provide a computer program product including instructions, when the instructions are run on a computer, the computer can execute the third aspect or one of the possible implementation manners of the third aspect. a method of communication.
  • an embodiment of the present application provides a computer program product including instructions, which, when the instructions are run on a computer, cause the computer to execute the fourth aspect or one of the various possible implementations of the fourth aspect. communication method.
  • the embodiments of the present application provide a computer program product including instructions, when the instructions are run on a computer, the computer is made to execute the fifth aspect or one of the various possible implementations of the fifth aspect. communication method.
  • the embodiments of the present application provide a computer program product including instructions, when the instructions are run on a computer, the computer can execute the sixth aspect or one of the possible implementation manners of the sixth aspect. a method of communication.
  • inventions of the present application provide a communication device for implementing various methods in various possible designs of any one of the first to sixth aspects.
  • the communication device may be the above-mentioned first network element, or a device including the above-mentioned first network element, or a component (for example, a chip) applied in the first network element.
  • the communication device may be the above-mentioned second network element, or a device including the above-mentioned second network element, or the communication device may be a component (eg, a chip) applied in the second network element.
  • the communication device may be the above-mentioned third network element, or a device including the above-mentioned third network element, or a component (eg, a chip) applied in the third network element.
  • the communication device may be the above-mentioned first application server, or a device including the above-mentioned first application server, or a component (eg, a chip) applied in the first application server.
  • the communication device includes corresponding modules and units for implementing the above method, and the modules and units may be implemented by hardware, software, or by executing corresponding software in hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • an embodiment of the present application provides a communication device, where the communication device includes: at least one processor and a communication interface.
  • the processor executes the computer-executable instructions or programs stored in the communication device, so that the communication device executes the first aspect or the second aspect or the third aspect or the fourth aspect or the first aspect.
  • the communication apparatus may be the first network element, or a component applied in the first network element.
  • the communication device may be a third network element, or a component applied in the third network element.
  • the communication device is the second network element, or a component applied in the second network element.
  • the communication device may be the first application server, or a component applied in the first application server.
  • the communication device described in the twenty-sixth aspect above may further include: a bus and a memory, where the memory is used to store codes and data.
  • the at least one processor communication interface and the memory are coupled to each other.
  • an embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executed instructions or programs stored in the memory, so that the communication device executes the first aspect or any one of the first aspects.
  • the communication device may be the first network element, or a chip applied in the first network element.
  • an embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executable instructions or programs stored in the memory, so that the communication device executes the second aspect or any one of the second aspects.
  • the communication device may be the first network element, or a chip applied in the first network element.
  • an embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executable instructions or programs stored in the memory, so that the communication device executes the third aspect or any one of the third aspects.
  • the communication device may be the second network element, or a chip applied in the second network element.
  • an embodiment of the present application provides a communication apparatus, where the communication apparatus includes: at least one processor.
  • the communication apparatus includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes the computer-executed instructions or programs stored in the memory, so that the communication device executes any of the fourth aspect or the fourth aspect above
  • the communication device may be the second network element, or a chip applied in the second network element.
  • an embodiment of the present application provides a communication apparatus, where the communication apparatus includes: at least one processor.
  • the communication apparatus includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executable instructions or programs stored in the memory, so that the communication device performs any one of the fifth aspect or the fifth aspect above
  • the communication device may be a first application server, or a chip applied in the first application server.
  • an embodiment of the present application provides a communication device, where the communication device includes: at least one processor.
  • the communication device includes: at least one processor.
  • at least one processor is coupled to a memory, and when the communication device is running, the processor executes computer-executed instructions or programs stored in the memory, so that the communication device performs any one of the sixth aspect or the sixth aspect above
  • the communication device may be a third network element, or a chip applied in the third network element.
  • the memory described in any one of the twenty-sixth aspect to the thirty-second aspect may also be replaced by a storage medium, which is not limited in this embodiment of the present application.
  • the memory described in any one of the twenty-sixth to thirty-second aspects may be a memory inside the communication device, of course, the memory may also be located outside the communication device, but at least one The processor may still execute computer-implemented instructions or programs stored in the memory.
  • an embodiment of the present application provides a communication device, where the communication device includes one or more modules for implementing the first aspect, the second aspect, the third aspect, the fourth aspect, and the fifth aspect , the method of any one of the sixth aspects, the one or more modules can be combined with the method of any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect, and the sixth aspect corresponding to each step.
  • an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instructions to implement the first aspect or the first aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is configured to run a computer program or instructions to implement the second aspect or the second aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the third aspect or the third aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the fourth aspect or the fourth aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instructions to implement the fifth aspect or the fifth aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the sixth aspect or the sixth aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • the chip provided in the embodiment of the present application further includes a memory for storing computer programs or instructions.
  • an embodiment of the present application provides a communication system, where the communication system includes: a first network element and a second network element, wherein the first network element is used to implement the first aspect or any possibility of the first aspect The implementation of the described communication method.
  • the second network element is configured to implement the communication method described in any possible implementation manner of the third aspect.
  • the communication system may further include: a third network element, and/or one or more first application servers.
  • the third network element is used to implement the communication method described in the sixth aspect or any possible implementation of the sixth aspect.
  • the first application server application implements the communication method described in the fifth aspect or any one possible implementation of the fifth aspect.
  • an embodiment of the present application provides a communication system, where the communication system includes: a first network element and a second network element.
  • the first network element is used to implement the communication method described in the second aspect or any possible implementation of the second aspect.
  • the second network element is configured to implement the communication method described in any possible implementation manner of the fourth aspect.
  • the communication system may further include: one or more first application servers, where the first application servers apply the communication method described in the fifth aspect or any possible implementation of the fifth aspect.
  • an embodiment of the present application provides a communication method, including: a first network element receiving first information from a second network element.
  • the first information is the expected migration completion time of the application context.
  • the first network element obtains, among the associated one or more first application servers, the migration completion time of the application context of each first application server for the terminal; the application context is the information of the first application for the terminal on the second application server .
  • the second application server is an application server that currently provides services for the terminal.
  • the first network element determines at least one target application server from the one or more first application servers according to the first information.
  • the method provided by the embodiment of the present application further includes: the first network element sends the information of at least one target application server to the second network element.
  • the migration completion time of the target application server for the application context of the terminal is less than or equal to the expected application context migration completion time.
  • the method provided by the embodiment of the present application further includes: the first network element receives the first network element from the second network element Address information of the enabling server, the first enabling server is associated with the second application server.
  • an embodiment of the present application provides a communication method, including: a first network element obtains, in one or more associated first application servers, the migration completion time of each first application server for the terminal's application context ;
  • the application context is the information of the first application for the terminal on the second application server, and the second application server is the application server currently providing services for the terminal.
  • the first network element determines at least one target application server from the one or more first application servers.
  • the method provided in the embodiment of the present application further includes: the first network element receives first information from the second network element, where the first information is the expected application context migration completion time.
  • the first network element determining at least one target application server from the one or more first application servers includes: the first network element determining at least one target from the one or more first application servers according to the expected migration completion time of the application context application server.
  • the method provided by the embodiment of the present application further includes: the first network element sends the information of at least one target application server to the second network element.
  • the migration completion time of the target application server for the application context of the terminal is less than or equal to the expected application context migration completion time.
  • the method provided in the embodiment of the present application may further include: the first network element receiving address information of the first enabling server from the second network element.
  • an embodiment of the present application provides a communication method, the method comprising: a second network element sending first information to a first network element, where the first information is an expected application context migration completion time.
  • the second network element receives information from the at least one target application server of the first network element.
  • the target application server can provide services for the terminal.
  • the application context is the information of the first application on the second application server for the terminal, and the second application server is the application server currently providing services for the terminal.
  • the migration completion time of the target application server for the application context of the terminal is less than or equal to the expected application context migration completion time.
  • an embodiment of the present application provides a communication device, which can implement the method in the forty-second aspect or any possible implementation manner of the forty-second aspect, and thus can also implement the forty-second aspect Advantages in any possible implementation of the aspect or the forty-second aspect.
  • the communication device may be the first network element, or may be a device that supports the first network element to implement the method in the forty-second aspect or any possible implementation manner of the forty-second aspect, for example, applied to the first network element chip.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • the communication apparatus includes a communication unit and a processing unit, wherein the processing unit is configured to support the first network element to implement the related actions processed by the first network element in the forty-second aspect or any possible implementation manner of the forty-second aspect .
  • the communication unit is configured to support the first network element to implement the related actions of sending and receiving by the first network element in the forty-second aspect or any possible implementation manner of the forty-second aspect.
  • an embodiment of the present application provides a communication device, which can implement the method in the forty-third aspect or any possible implementation manner of the forty-third aspect, and thus can also implement the forty-second aspect Advantages in any possible implementation of the aspect or the forty-second aspect.
  • the communication device may be the first network element, or may be a device that supports the first network element to implement the method in the forty-third aspect or any possible implementation manner of the forty-third aspect, for example, applied to the first network element chip.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • the communication apparatus includes a communication unit and a processing unit, wherein the processing unit is configured to support the first network element to implement the relevant actions processed by the first network element in the forty-third aspect or any possible implementation manner of the forty-third aspect .
  • the communication unit is configured to support the first network element to implement the related actions of sending and receiving by the first network element in the forty-third aspect or any possible implementation manner of the forty-third aspect.
  • an embodiment of the present application provides a communication device, which can implement the method in the forty-fourth aspect or any possible implementation manner of the forty-fourth aspect, and thus can also implement the forty-fourth aspect.
  • the communication device may be the second network element, or may be a device that supports the second network element to implement the method in the forty-fourth aspect or any possible implementation manner of the forty-fourth aspect, for example, applied to the second network element chip.
  • the communication device may implement the above method through software, hardware, or through hardware executing corresponding software.
  • the communication apparatus includes a communication unit and a processing unit, wherein the processing unit is configured to support the second network element to implement the related actions processed by the second network element in the forty-fourth aspect or any possible implementation manner of the forty-fourth aspect .
  • the communication unit is configured to support the second network element to implement the related actions of sending and receiving by the second network element in the forty-fourth aspect or any possible implementation manner of the forty-fourth aspect.
  • an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is configured to run a computer program or instruction to implement the forty-second aspect or the fourth A communication method described in various possible implementation manners of the twelve aspects.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instruction to implement the forty-third aspect or the fourth aspect A communication method described in various possible implementation manners of the thirteenth aspect.
  • the communication interface is used to communicate with other modules outside the chip.
  • an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is configured to run a computer program or instruction to implement the forty-fourth aspect or the fortieth aspect A communication method described in various possible implementation manners of the four aspects.
  • the communication interface is used to communicate with other modules outside the chip.
  • the chip provided in the embodiment of the present application further includes a memory for storing computer programs or instructions.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer executes the fortieth A communication method described in any one possible implementation manner of the second aspect to the forty-second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on a computer, the computer executes the fortieth A communication method described in any one possible implementation manner of the third aspect to the forty-third aspect.
  • an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on a computer, the computer executes the fortieth A communication method described in any one possible implementation manner of the fourth aspect to the forty-fourth aspect.
  • an embodiment of the present application provides a computer program product including instructions, which, when the instructions are run on a computer, cause the computer to execute the forty-second aspect or various possible implementations of the forty-second aspect A method of communication described.
  • the embodiments of the present application provide a computer program product including instructions, when the instructions are run on a computer, the computer can execute the forty-third aspect or various possible implementations of the forty-third aspect. A method of communication described.
  • the embodiments of the present application provide a computer program product including instructions, when the instructions are run on a computer, the computer can execute the forty-fourth aspect or various possible implementation manners of the forty-fourth aspect.
  • an embodiment of the present application provides a communication system, including a first network element and a second network element, wherein the first network element is configured to perform the above-mentioned forty-second aspect/43rd aspect and the same.
  • the first network element is configured to perform the above-mentioned forty-second aspect/43rd aspect and the same.
  • the second network element is used to perform the methods described in the forty-fourth and various possible implementations.
  • any device or computer storage medium or computer program product or chip or communication system provided above is used to execute the corresponding method provided above. Therefore, the beneficial effect that can be achieved can refer to the corresponding provided above. The beneficial effects of the corresponding solutions in the method will not be repeated here.
  • FIG. 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 1b is a schematic diagram of the architecture of another communication system provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of the architecture of the communication between the NWDAF network element and the network element (network function, NF) in the 5GC provided by the embodiment of the present application;
  • FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 4 is an overall flowchart of an application context migration provided by an embodiment of the present application.
  • Figures 5.1 to 5.5 are schematic diagrams of a specific flow of application context migration provided by an embodiment of the present application.
  • FIG. 5.8 is a schematic diagram of a specific flow of another application context migration provided by an embodiment of the present application.
  • Figure 6.1 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • Figure 6.2 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of still another communication method provided by an embodiment of the present application.
  • FIG. 23 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 24 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect.
  • the first application server and the second application server are only used to distinguish different application servers, and the sequence of the first application server is not limited.
  • the words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like are not necessarily different.
  • At least one means one or more
  • plural means two or more.
  • And/or which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .
  • LTE long-term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • PLMN public land mobile network
  • D2D device-to-device
  • M2M machine to machine
  • future 5G communication systems etc.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • an embodiment of the present application provides a communication system 100
  • the communication system 100 includes: a source enabling server 101, a target enabling server 102, and an edge enabling client (edge enabler client, EEC) 103.
  • the source enabling server 101 can communicate with the target enabling server 102 .
  • the target-enabled server 102 can communicate with the edge-enabled client 103 .
  • the edge-enabled client 103 is the peer entity of the source-enabled server 101 and the target-enabled server 102 on the terminal 104 side.
  • the source enabling server 101 is an enabling server that provides services for the terminal 104 before the application context is migrated.
  • the target enabling server 102 is an EES that is reselected by the EEC 103 for the terminal 104 when the source enabling server 101 cannot continue to serve the terminal 104 .
  • the source enabling server 101 can no longer continue.
  • the EEC 103 will first trigger the service provisioning (service provisioning) process to obtain the target enabling server 102 that provides services for the terminal 104.
  • EEC 103 interacts with edge configuration server (ECS) 108 .
  • ECS edge configuration server
  • the process of acquiring the target enabling server 102 may also be initiated by the source enabling server 101 . If it is the process of acquiring the target enabling server 102 initiated by the source enabling server 101, it can be regarded as a "retrieve T-EES" process (retrieve T-EES).
  • the communication system 100 further includes: a source application server 105 .
  • the terminal 104 is capable of application data communication with the source application server 105 .
  • the source application server 105 is associated with the source enabling server 101 , that is, the source application server 105 is registered with an source enabling server 101 , or information of a source application server 105 is configured on the source enabling server 101 through the management system.
  • the source enabling server 101 is referred to as the enabling server associated with the source application server 105 .
  • the source-enabled server 101 controls/manages the source application server 105 registered/configured on the source-enabled server 101 .
  • the source application server 105 is an application server that currently provides services for the terminal 104 . That is, the terminal 104 accesses the edge data network through the source application server 105 .
  • the origin application server 105 typically has the application context of the terminal 104 in it.
  • the source enabling server 101 and the source application server 105 belong to the same EDN1.
  • the target enabling server 102 and one or more target application servers 106 belong to the same EDN2.
  • EDN1 and EDN2 may be the same EDN or different EDNs, and different EDNs are used as an example in FIG. 1a. Wherein, EDN1 can be regarded as the source EDN of the terminal 104, and EDN2 can be regarded as the target EDN of the terminal 104 after the EDN is replaced.
  • Application context refers to running status information related to one or a group of terminals, or a group of data related to application clients on the source enabling server 101 .
  • the context of the subscription between the one or more terminals at the source application server 105 and the core network may also be included, such as a subscription transaction identifier and the like.
  • the context of the one or more terminals on an edge enabler server (EES) for example, the transaction identifier of the subscription of the one or more terminals by the source application server 105 is included.
  • EES edge enabler server
  • the source application server 105 cannot continue to provide services for the terminal 104, for example, when the terminal 104 moves out of the service area of the source application server 105, such as terminal movement between edge data networks (EDN),
  • EDN edge data networks
  • the source application server 105 may not be able to continue to provide services for the currently running application, or the source application server 105 is no longer the optimal application server that can provide services for the terminal 104, and other application servers may be more suitable
  • the application server needs to be reselected to provide services for the terminal 104 .
  • the EEC 103 may re-select an application server for the terminal 104 to provide services for the terminal 104 .
  • the EEC 103 may trigger the target enabling server 102 to discover one or more target application servers 106 that may provide services to the terminal 104 .
  • the source enabling server 101 or the source application server 105 triggers the target enabling server 102 to discover one or more target application servers 106 that can provide services to the terminal 104 .
  • the target enabling server 102 is used to discover one or more target application servers 106 that can provide services for the terminal, and determine the migration completion time of each target application server 106 for the application context of the terminal 104 or each target application server 106 One or more of the location information, load information, network conditions, location information of the source application server 105, load information, network conditions, and the size of the application context, so that the application server that will provide services to the terminal 104 in the future can download the source application from the source application server.
  • Server 105 is replaced with a target application server in one or more target application servers 106 .
  • the EEC 103 will first trigger a service provisioning (service provisioning) process to trigger the target enabling server 102 that provides services for the terminal 104 .
  • the EEC interacts with an edge configuration server (Edge Configuration Server, ECS) 108 .
  • ECS Edge Configuration Server
  • the process of triggering the acquisition of the target enabling server 102 may also be initiated by the source enabling server 101. If it is initiated by the S-EES, it can be regarded as a "retrieve T-EES" process (retrieve T-EES).
  • the communication system 100 provided in this embodiment of the present application may further include: a data analysis network element 107 or an ECS 108 .
  • the data analysis network element 107 or the ECS 108 can calculate the target application server 106 for the terminal 104 according to the information provided by the target enabling server 102 for determining the migration completion time of each target application server 106 for the application context of the terminal 104
  • the migration completion time of the application context may include: location information of each target application server 106, load information, network conditions, location information of the source application server 105, One or more of load information, network conditions, and size of the application context.
  • the data analysis network element 107 may belong to the network element in the 5GC, or may belong to the network management network element.
  • the data analysis network element 107 may be a network data analysis function (network data analysis function, NWDAF) network element in 5GC, or a management data analysis function (management data analysis function, MDAF) network element of the network management, or even Data analysis network element on the RAN side.
  • NWDAF network data analysis function
  • MDAF management data analysis function
  • (A) in Figure 2 is data collection, that is, the NWDAF invokes the services of other 5GC network elements to collect the input information required for network analysis.
  • Architecture; (B) in FIG. 2 is data opening, that is, the architecture in which the NWDAF sends the analysis data to the network elements that subscribe or request the analysis data by providing the NWDAF service.
  • NWDAF provides slice-level network data analysis for other network elements, and provides network analysis information (ie, load-level information) at the network slice instance level, without knowing the current subscription terminal using the slice.
  • the architecture shown in FIG. 1a may be referred to as a scenario of replacing the enabling server, that is, the enabling server of the terminal 104 is replaced from the source enabling server 101 to the target enabling server 102 .
  • a communication system provided by an embodiment of the present application includes: an enabling server 109 and an edge enabler client (edge enabler client, EEC) 103.
  • edge enabler client edge enabler client, EEC
  • the third enabling server 100 is an enabling server that currently provides services for the terminal 104 .
  • the edge-enabled client 103 is the peer entity of the enabling server 109 on the terminal 104 side.
  • the enabling server 109 is deployed in the EDN.
  • the enabling server 109 is used to discover one or more target application servers 106 that can provide services for the terminal, and determine the completion time of the migration of each target application server 106 for the application context of the terminal 104, so as to facilitate the subsequent service for the terminal 104
  • the application server is replaced from the source application server 105 to the target application server in one or more target application servers 106 .
  • the communication system shown in FIG. 1 b may further include: a source application server 105 .
  • the source application server 105 is an application server that currently provides services for the terminal 104 .
  • the source application server 105 is registered with the enabling server 109, or information of a source application server 105 is configured on the enabling server 109 through the management system.
  • the enabling server 109 is referred to as the enabling server associated with the source application server 105 .
  • the enabling server 109 controls/manages the origin application servers 105 registered/configured on the enabling server 109 .
  • the architecture shown in FIG. 1b can be referred to as a scenario in which the enabling server is not replaced, that is, the enabling server that provides services for the terminal 104 is not replaced.
  • EDN edge data network
  • a general understanding is that EDN corresponds to a data network and is a special local data network (local DN) that includes edge-enabled functions and can use data network access identifier (DNAI) and data network name (data network access identifier, DNAI).
  • local DN a special local data network
  • DNAI data network access identifier
  • DNAI data network access identifier
  • DNN data network name
  • EDN is a peer-to-peer concept of central cloud, which can be understood as a local data center (geographical location concept), which can be identified by DNAI and can contain multiple local data networks (local DN) .
  • edge servers Various servers deployed in the EDN may be referred to as edge servers, for example, an enabler server may be referred to as an edge enabler server (EES).
  • EES edge enabler server
  • EAS edge application server
  • Application instance/edge application The application deployed in the edge data network is called an application instance. Specifically, it refers to an instance (instance) of a server application (eg, social media software, augmented reality (AR), virtual reality (VR)) deployed and running on the EDN.
  • An application can deploy one or more EASs in one or more EDNs. EASs deployed and running in different EDNs can be considered as different EASs of an application. They can share a domain name and use an anycast IP address. Different IP addresses can also be used.
  • EAS may also be referred to as edge application (server), application instance, edge application instance, multi-access edge computing (multi-access edge computing, MEC) application (server), EAS function, and the like.
  • Application client is the peer entity of the edge application on the UE side.
  • the application client is used for an application user (ie, a terminal (user)) to obtain application services from the application server.
  • the application client is a client program applied on the terminal side.
  • the application client can connect to the application server on the cloud to obtain application services, and can also connect to the EAS deployed and running in one or more EDNs to obtain application services.
  • Edge enabler server It can provide some enabling capabilities for application instances deployed in EDN, and can better support the deployment of applications in MEC. It can support registration of edge applications, authentication and authentication of UEs, and provide IP address information of application instances for terminals. It can further support obtaining the identification and IP address information of the application instance, and further send the identification and IP address information of the application instance to the edge data network configuration server.
  • EES is deployed in EDN. In general, an EAS is registered on an EES, or the information of an EAS is configured on an EES through a management system, the EES is called the EES associated with the EAS, and the EES controls/manages the EAS registered/configured on the EES. .
  • Edge enabler client It is the peer entity of EES on the terminal side. EEC is used to register EEC information and application client information with EES, perform security authentication and authentication, obtain EAS IP address from EES, and provide edge computing enabling capabilities to application clients. returned to the application client.
  • Edge configuration server responsible for EDN configuration, such as providing EES information to UE.
  • the information of the application instance can also be directly provided to the terminal, and the information of the application instance can be obtained by interacting with the DNS of the application. Further obtain and save application instance and IP address information from other functional entities.
  • the application user signs a service agreement with the application provider, thereby providing services for the application user, and the application user logs in to the application client on the terminal and communicates through the connection between the application client and the EAS.
  • the enabling client is the middleware layer, generally located in the operating system, or between the application client and the operating system.
  • the application client can obtain the edge-enabled service from the enabling client in the form of an application programming interface (API).
  • API application programming interface
  • the communication between the AC and the EEC is EDGE-5 interface communication.
  • Communication between the EEC and each EES is through the EDGE-1 interface.
  • Communication between EEC and ECS is through EDGE-4 interface.
  • Communication between the core network and the ECS is through the EDGE8 interface.
  • the core network communicates with each EAS through the EDGE-7 interface.
  • the core network communicates with each EES through the EDGE-2 interface.
  • Communication between EAS and EES is through the EDGE-3 interface.
  • Communication between EES is through EDGE-9 interface.
  • Communication between ECS and EES is through EDGE-6 interface.
  • the terminal involved in the embodiments of this application is a device with a wireless communication function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. It can also be deployed on water (such as ships, etc.). It can also be deployed in the air (eg on airplanes, balloons, satellites, etc.).
  • the terminal is also called user equipment (UE), mobile station (MS), mobile terminal (MT) and terminal equipment, etc. It is a device that provides voice and/or data connectivity to users. equipment.
  • the terminal includes a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • the terminal can be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device (such as a smart watch, a smart bracelet, a pedometer, etc.), In-vehicle equipment (for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rails, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, industrial control (industrial control) Wireless terminals, smart home equipment (for example, refrigerators, TVs, air conditioners, electricity meters, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart Wireless terminals in the power grid (smart grid), wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, flying equipment (for example, smart Robots, hot air balloons, drones, airplanes), etc.
  • MID mobile internet device
  • a wearable device such as a smart watch, a
  • the terminal is a terminal that often works on the ground, such as a vehicle-mounted device.
  • a chip deployed in the above-mentioned device such as a System-On-a-Chip (SOC), a baseband chip, etc., or other chips with communication functions, may also be referred to as a terminal.
  • SOC System-On-a-Chip
  • baseband chip etc.
  • other chips with communication functions may also be referred to as a terminal.
  • the terminal may be a vehicle with a corresponding communication function, or a vehicle-mounted communication device, or other embedded communication device, or may be a user's handheld communication device, including a mobile phone, a tablet computer, and the like.
  • the terminal may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.
  • FIG. 3 shows a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application.
  • the communication device includes a processor 31, a communication line 34, and at least one transceiver (in Fig. 3, it is only exemplary to include a communication interface 33 for illustration).
  • the processor 31 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the programs of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication link 34 may include a path to communicate information between the components described above.
  • Communication interface 33 using any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the communication device may further include a memory 32 .
  • the memory 32 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM) or other type of static storage device that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being executed by a computer Access any other medium without limitation.
  • the memory may exist independently and be connected to the processor through communication line 34 .
  • the memory 32 may also be integrated with the processor 31 .
  • the memory 32 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 31 .
  • the processor 31 is configured to execute the computer-executed instructions stored in the memory 32, thereby implementing the communication methods provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.
  • the processor 31 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3 .
  • the communication device may include multiple processors, such as the processor 31 and the processor 35 in FIG. 3 .
  • processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • ACR application context relocation, application context relocation
  • ACT application context transfer, application context transfer
  • ACT should be understood as a process of migrating an application context from the source application server 105 to the target application server 106 .
  • the migration completion time of the application context may be referred to as: ACT completion time or ACT delay.
  • the application context of the terminal 104 on the source application server 105 needs to be migrated to the target application server.
  • Phase 1 Detection of application context migration: that is, it is determined that context migration may be required. At this time, the detection entity detects some events, such as the location change of the terminal 104, or the update of the user plane path of the terminal 104.
  • Stage 2 Decision of application context migration: The decision-making entity determines that application context migration is required.
  • Stage 3 Execution of application context migration: mainly to transfer the application context from the source application server (source EAS, S-EAS) (ie, the source application server 105) to the target EAS (target EAS, T-EAS). It may further include information of notifying the T-EAS to the terminal 104, notifying the network of the completion of the application context migration and related information of the T-EAS (such as the address of the T-EAS, the corresponding N6 routing information of the T-EAS, etc.).
  • Phase 4 Cleanup work after application context migration multiple entities are involved, such as application client (application client, AC) initiating a new socket connection to T-EAS, etc.
  • SA6 currently defines the following scenarios and processes for context migration:
  • EEC detects that application context migration (eg, terminal location update) needs to be performed.
  • EEC obtains T-EES information from ECS.
  • the EEC triggers the T-EES to perform the steps of discovering the T-EAS.
  • the EEC obtains the information of the T-EAS discovered by the T-EES from the T-EES.
  • EEC triggers AC, which decides whether and when to perform application context migration. After the AC decides to migrate the application context, the AC triggers S-EAS.
  • the S-EAS sends the application context to the T-EAS. After the application context is migrated, the AC switches the application data of the terminal to the T-EAS.
  • EEC detects that context transfer is required, and EEC decides whether and when to perform context transfer. After EEC decides to perform context transfer, EEC obtains T- EES from source EES (source EES, S-EES). EAS information, the EEC notifies the S-EAS through the S-EES to perform context migration, and the S-EAS sends the application context to the T-EAS. After context migration, AC switches application data to T-EAS.
  • Scheme 3 As shown in Figure 5.3, S-EES detects that context transfer is required, S-EES sends context transfer information to S-EAS, S-EAS decides whether and when to perform context transfer, and S-EAS decides for context transfer After the migration, the S-EAS obtains the T-EAS information, and the S-EAS sends the application context to the T-EAS. After context migration, AC switches application data to T-EAS.
  • Scheme 4 As shown in Figure 5.4, EEC, S-EAS, and S-EES detect that context transfer is required. S-EES decides whether and when to perform context transfer. After S-EES decides to transfer application context, S-EES Obtain the T-EES information through the ECS, determine the T-EAS, the S-EES sends an ACR notification to the S-EAS, and the S-EAS sends the application context to the T-EAS. After context migration, AC switches application data to T-EAS.
  • EEC detects that context transfer is required, EEC informs T-EES that context relocation may be required, and T-EES decides whether and when to perform context transfer. After T-EES decides to perform context transfer, The T-EES acquires the T-EAS information and sends an ACR request message to the T-EAS. T-EAS initiates application context transfer between S-EAS and T-EAS. After context migration, AC switches application data to T-EAS.
  • T-EAS discovery and selection are involved.
  • T-EAS discovery initiated by EEC T-EAS discovery initiated by S-EAS/S-EES. These two methods are described separately:
  • the T-EAS discovery initiated by the EEC reuses the EAS discovery process initiated by the EEC.
  • EEC requests or subscribes to EAS from EES, which can carry EAS filter conditions.
  • the EES returns or informs the EEC of the EAS (at least one) that satisfies the condition.
  • the EAS discovery process initiated by the EEC can use a "request-response” model or a "subscription-notify” model.
  • the specific process is as follows:
  • the request-response model As shown in Figure 5.6, the request-response model. That is, the EEC sends an EAS discovery request (discovery request) to the EES. EES authenticates and discovers T-EAS. EES sends EAS discovery response (discovery response) to EEC.
  • the EAS discovery request includes EEC ID (identifier, identification) and security certification, and may include EAS selection filter conditions, which include EAS ID, EAS address information, and may include EAS service scope, whether to support business continuity, etc.
  • the EAS discovery response contains at least one T-EAS, and each T-EAS corresponds to an EAS profile (EAS profile).
  • the EAS profile is the relevant parameter table of the EAS, including the ID (identifier, identification) of the T-EAS, address information, and may include AC ID (identifying the AC that the EAS can serve), the service scope of the EAS, and the corresponding DNAI.
  • the EEC sends an EAS discovery subscription request to the EES.
  • the EAS discovery subscription request includes the EEC ID, security authentication and notification trigger conditions, which indicate the sending timing of the EAS discovery notification, including changes in the availability of the EAS;
  • the discovery subscription request may also include the EAS selection filter condition, which includes the EAS ID.
  • EAS address information including EAS service scope, whether to support business continuity, etc.
  • EES performs security verification (Authorization check).
  • the EES sends an EAS discovery subscription response to the EEC, including the subscription success response.
  • the notification process as shown in (B) in Figure 5.7, includes:
  • the EES sends an EAS discovery notification (EAS discovery notification) to the EEC, including at least one T-EAS, and each T-EAS corresponds to an EAS profile.
  • EAS discovery notification EAS discovery notification
  • the EAS profile is the same as the request-response process and will not be repeated here.
  • the T-EAS discovery process initiated by the S-EAS/S-EES provided in this embodiment of the application is only used in the application context migration process.
  • the S-EES requests the T-EAS from the T-EES, or the S-EAS requests the T-EAS from the T-EES through the S-EES, which may carry the T-EAS screening conditions.
  • the T-EES returns the T-EAS (at least one) that meets the conditions to the S-EES. If it is initiated by the S-EAS, the S-EES also forwards the T-EAS (at least one) to the S-EAS.
  • the T-EAS discovery process initiated by S-EAS/S-EES is as follows:
  • the S-EAS sends an EAS discovery request to the S-EES.
  • the EAS discovery request includes the information element of Step 1 of the EAS discovery request-response model initiated by the EEC (the EEC ID is replaced with the S-EAS ID), and may also include the location information of the terminal and the target DNAI (associated with the potential T-EAS).
  • the S-EES decides to perform application context relocation (ie, application context migration).
  • S-EES interacts with ECS to obtain T-EES.
  • the S-EES sends an EAS discovery request to the T-EES.
  • the cells contained in the EAS discovery request are the same as in step 1 (the S-EAS ID is replaced with the S-EES ID).
  • the T-EES sends an EAS discovery response to the S-EES.
  • the EAS discovery response contains the same cells as in step 3 of the discovery request-response model.
  • the S-EES forwards the EAS discovery response to the S-EAS.
  • step 1 and step 5 are optional steps and are only executed when the process is initiated by the S-EAS.
  • the EAS discovery response/notification message can contain one or more T-EAS and their profiles. Therefore, when multiple T-EASs are returned, the EEC/S-EAS/S-EES needs to Select a T-EAS from multiple T-EAS.
  • the selection criteria of T-EAS were discussed at the 3GPP SA6#42E meeting, and the conclusion of selecting T-EAS according to EAS Service KPIs was adopted.
  • EAS service key performance indicator (Key Performance Indicator, KPI) is an item in the EAS profile, including several KPIs related to the interaction between EAS and AC. The details are shown in Table 1 below:
  • the V2X (vehicle to everything, Internet of Vehicles) service has a much stricter requirement for migration delay than the video service.
  • the EAS service KPI contains neither the application context migration delay information corresponding to the EAS nor the information elements sufficient for the EEC/S-EAS/S-EES to determine the application context migration delay corresponding to the EAS.
  • even all the cells that may be included in the EAS profile in the EAS discovery response/notification message neither contain the migration delay information corresponding to the EAS, nor contain enough cells to determine the delay information. Therefore, EEC/S-EAS/S-EES cannot perform T-EAS selection based on application context migration delay information.
  • an embodiment of the present application provides a communication method, in which a first network element obtains information used to determine the migration completion time of the terminal's application context targeted by each first application server (for example, the terminal's application context Migration completion time, or), and then send the information of the migration completion time of the application context of the terminal targeted by each first application server to the second network element, so that the second network element can select the first application that provides services for the terminal.
  • the server time may be based on the migration completion time of the application context of the terminal targeted by each first application server, so that the selected first application server can better provide services for the terminal.
  • the specific structure of the execution body of a communication method is not particularly limited in the embodiment of the present application, as long as the program that records the code of the communication method of the embodiment of the present application can be executed according to the present application.
  • a communication method according to the embodiment of the application can be used for communication.
  • the execution body of the communication method provided by the embodiment of the present application may be a functional module in the first network element that can call and execute a program, or a communication device, such as a chip, applied in the first network element.
  • the execution body of the communication method provided by the embodiment of the present application may be a functional module in the second network element that can call and execute a program, or a communication device applied in the second network element, for example, a chip. This application does not limit this.
  • the following embodiments are described by taking a communication method where the execution body is the first network element and the second network element as an example.
  • Figure 6.1 is a communication method provided by this embodiment of the application, and the method includes:
  • Step 601 The first network element obtains the transfer completion time (transfer completion time) of each first application server for the terminal's application context (application context) in one or more first application servers associated with the first network element.
  • the application context is a set of data about the application client on the application server
  • the application server is an application server that provides services for the terminal
  • the application context exists in the second application server before migration.
  • the second application server is an application server that currently provides services for the terminal.
  • the first application server is used to provide services for the terminal.
  • the first application server is an application server recommended by the first network element to the second network element and can provide services for the terminal when the second application server does not meet the requirements for serving the terminal.
  • the second application server does not meet the requirements for serving the terminal when the following situation exists, for example, the location of the terminal changes, for example, the terminal is located outside the service range of the second application server, or the second application server The server is down, down, overloaded, or the second application server is not the best server to serve the terminal.
  • the migration completion time of the application context refers to the time required for the application context to start to migrate from the second application server to finally migrate to the first application server. Due to differences in load information/network conditions/locations between different second application servers, etc., the time required for the same application context to migrate to different second application servers is different.
  • the one or more first application servers may be all or part of the n first application servers discovered by the first network element according to the EAS discovery request from the second network element, where n is Integer greater than or equal to 1.
  • the one or more first application servers are application servers that meet the EAS discovery filter conditions carried in the EAS discovery request.
  • the one or more first application servers associated with the first network element may also be referred to as: the first network element is associated with one or more first application servers, and the so-called association between the two may refer to: the one or more first application servers A first application server is registered in the first network element, so that the first network element can control/manage the first application server registered/configured on the first network element.
  • Step 602 The first network element sends the migration completion time of each first application server to the terminal's application context to the second network element.
  • the second network element receives the migration completion time of the application context of each first application server for the terminal from the first network element.
  • the migration completion time of each first application server for the terminal's application context is used to determine a target application server that provides services for the terminal in one or more first application servers.
  • the migration completion time of each first application server for the application context of the terminal may be carried in the same message, for example, in message 1.
  • the signaling overhead between the first network element and the second network element can be reduced. For example, message 1 ⁇ (T-EAS1, T1), .
  • the identifier of the first application server may be address information of the first application server or other parameters that can identify the first application server, which is not limited in this embodiment of the present application.
  • the migration completion time of each first application server for the terminal's application context may be carried in different messages.
  • the first application server 1's migration completion time for the terminal's application context is carried in the message 1
  • the completion time of the migration of the application context of the terminal by the first application server 2 is carried in message 2, which is not limited in this embodiment of the present application.
  • the message 1 may further include the EAS profile of each first application server.
  • the migration completion time of the first application server 1 for the application context of the terminal may be located in the EAS profile of the first application server 1.
  • the migration completion time of the first application server 1 for the application context of the terminal may not be located in the EAS profile of the first application server 1.
  • the first network element may send, to the second network element, the completion time of migration of the application context of the terminal by some of the first application servers in the one or more first application servers.
  • the first network element may filter the migration completion time of one or more first application servers for the application context of the terminal, for example, remove the longest migration completion time or the migration completion time exceeding the preset time, and select the remaining ones that meet the requirements.
  • the first application server sends the migration completion time of the application context of the terminal to the second network element. This is because the migration completion time exceeds the preset time or is the longest, and the second network element usually does not use the first application
  • the server is used as the target application server, so eliminating these unsatisfactory migration completion times can reduce communication overhead.
  • the second message is used to request the first network element to provide a capable
  • the message 1 may be a response message for the second message.
  • the second message is an EAS discovery request.
  • Message 1 may be an EAS discovery response.
  • the second message is an EAS discovery subscription request, and message 1 can be an EAS discovery notification or an EAS discovery subscription response.
  • Step 603 The second network element selects a target application server from one or more first application servers according to the completion time of the migration of the application context of each first application server for the terminal.
  • the migration completion time of the target application server for the application context of the terminal is the shortest among the one or more first application servers, so that the impact of the migration completion time on application running interruption can be minimized.
  • the migration completion time of the target application server for the application context of the terminal is less than or equal to a preset time, and the preset time may be set by a predefined value or as required, which is not limited in this embodiment of the present application.
  • the second network element can transfer the application context from the two first application servers.
  • the manner of selecting one of the first application servers as the target application server, or selecting the target application server from the two first application servers may refer to the description in the prior art, which will not be repeated here.
  • step 602 may be replaced by the following manner: the first network element, according to the completion time of the migration of the application context of each first application server for the terminal, from one or more first application servers Determine the target application server.
  • the target application server is used to provide services for the terminal.
  • step 603 can be replaced by the following manner: the first network element sends the information of the target application server to the second network element, correspondingly, the second network element receives the information of the target application server from the first network element, and according to The information of the target application server determines the target application server.
  • the first network element may also send the migration completion time of the target application server for the terminal's application context to the second network element.
  • An embodiment of the present application provides a communication method.
  • the application context of the terminal on the second application server needs to be migrated to the target application server , although one or more first application servers can provide services for the terminal, due to the difference in the migration completion time required for the application context to be migrated to each first application server, during the application context migration process, it will cause the terminal
  • the application service is temporarily suspended or interrupted, so the migration completion time will affect the operation of the first application of the terminal.
  • the first network element in this embodiment of the present application completes the migration by acquiring the application context of each first application server for the terminal time, and then provide the second network element with the migration completion time of each first application server for the application context of the terminal.
  • the second network element can be assisted to select a target application server from one or more first application servers according to the migration completion time of each first application server for the application context of the terminal, thereby minimizing the impact of the migration completion time on application interruption. , so that the selected target application server can better serve the terminal.
  • the embodiment of the present application provides a communication method, and the communication method includes: in one or more first application servers associated with a first network element, each of the first application servers is directed to all the first application servers.
  • the migration completion time of the application context of the terminal; the first application server is used to provide services for the terminal.
  • the application context is the information of the first application on the second application server for the terminal, and the second application server is the application server currently providing services for the terminal; the first network element
  • the first application server determines at least one target application server from one or more of the first application servers according to the migration completion time of the application context of the terminal.
  • the method provided in the embodiment of the present application changes from one or more of the first network elements from one or more of the first Before determining at least one target application server in the application server, step 601-1 as shown in Figure 6.2 may also be included.
  • the first network element determines from one or more of the first application servers, according to the completion time of the migration of the application context of the terminal for each of the first application servers, at least one target application server can pass the following: The above step 603-1 is implemented.
  • Figure 6.2 is another communication method provided by this embodiment of the application, and the method includes:
  • Step 601-1 The second network element sends the first information to the first network element.
  • the first network element receives the first information from the second network element.
  • the first information is the expected migration completion time of the application context.
  • the first information may be carried in message X.
  • the message X may be the EAS discovery subscription request shown in Figure 5.7, or the message X may be the EAS discovery request shown in Figure 5.6, which is not limited in this embodiment of the present application.
  • the first information is the requirement of the second network element for the completion time of the migration of the application context, that is, the target application server (for example, T-EAS) and the second application server (for example, S-EAS) discovered or selected.
  • the application context migration time cannot exceed this time.
  • the first network element may select at least one T-EAS from the discovered one or more first application servers according to the first information.
  • the expected application context migration completion time is 10 milliseconds, which means that the application context migration time between the discovered or selected T-EAS and S-EAS cannot exceed 10 milliseconds.
  • the expected application context migration completion time may be the migration completion time of the application context specific to the terminal or this type of terminal, that is, for different terminals or different types of terminals, it may have different expectations.
  • the expected application context migration completion time is the same for different terminals or different types of terminals.
  • Step 602-1 The first network element obtains the migration completion time of the application context of the terminal for each first application server in the associated one or more first application servers.
  • the application context is the information of the first application on the second application server for the terminal, and the second application server is the application server currently providing services for the terminal.
  • step 602-1 For the specific implementation of step 602-1, reference may be made to the description of any one of the following cases 1 to 3, which will not be repeated here.
  • step 602-1 and step 601-1 do not distinguish the order.
  • Step 603-1 The first network element determines at least one target application server from one or more first application servers according to the first information.
  • the first network element converts, among the multiple first application servers, one or more first application servers for which the migration completion time of the application context of the terminal is less than or equal to the expected application context migration completion time, Determined as the target application server.
  • Step 604-1 The first network element sends information of at least one target application server to the second network element.
  • the second network element receives information from at least one target application server of the first network element.
  • the information of at least one target application server may be carried in the EAS discovery notification. If the message X is an EAS discovery request, the information of at least one target application server may be carried in the EAS discovery response.
  • the second network element may select a target application server from the at least one target application server to provide services for the terminal.
  • the first network element may also send to the second network element the completion time of migration of the application context of the terminal for each target application server in the at least one target application server.
  • the second network element can select a target application server to provide services for the terminal according to the completion time of migration of each target application server for the terminal's application context.
  • the first network element can filter out at least one target application server that meets the requirements from the migration completion time of each first application server for the application context of the terminal. and provide it to the second network element, so that the second network element selects a target application server that provides services for the terminal from at least one target application server.
  • the enabling server for example, enabling server 109 currently serving the terminal is still the enabling server most suitable for providing services for the terminal, in other words, the source application server 105 cannot serve the terminal Provide services, resulting in the need to replace the application server that provides services for the terminal, but the EES that provides services for the terminal remains unchanged.
  • the first network element may be the third enabling server.
  • the second network element may be an enabling client or a second application server.
  • the third enabling server may be enabling server 109 , for example.
  • the enabling client can be EEC103.
  • the second application server may be the source application server 105 .
  • the EES currently serving the terminal (for example, the source enabling server 101) can no longer continue to provide services for the terminal, or is no longer
  • the E-enabled server that is most suitable for providing the terminal, or the target enabling server 102 that is more suitable for providing services to the terminal currently exists. Therefore, the enabling server that provides the server for the terminal changes from the source enabling server 101 to the target enabling server 102 .
  • Origin enabling server 101 is associated with origin application server 105 .
  • the source enabling server 101 is an enabling server that provides services for the terminal before the enabling server is replaced.
  • the first network element may be the second enabling server.
  • the second network element may be an enabling client or a second application server or a first enabling server. If the second network element is the enabling client, the enabling client has accessed the second enabling server at this time.
  • the second enabling server is the target enabling server 102 .
  • the enabling client can be EEC103.
  • the second application server may be the source application server 105 .
  • the first enabling server is the source enabling server 101 .
  • the method provided by the embodiment of the present application may further include: the second network element sends a request message to the first network element (for example, the EAS shown in Figure 5.6). discovery request, or EAS discovery subscription request as shown in Figure 5.7).
  • the first network element receives the request message from the second network element.
  • the request message is used to request the first network element to obtain the migration completion time of the terminal's application context discovered by the first network element and targeted by the first application server capable of providing services for the terminal.
  • the request message may include the identifier of the second application server and/or the location information/address information of the second application server.
  • the first network element determines the application server that currently provides services for the terminal, and it is convenient for the subsequent acquisition of required information (for example, the size of the application context, the second related information) from the second application server.
  • the request message may include the identifier of the first enabling server (for example, address information of the first enabling server).
  • the first network element determines the enabling server that provided services for the terminal before, so as to obtain the required information (eg, the size of the application context, the second related information) from the first enabling server.
  • Case 1) The first application server determines the migration completion time of the application context of the terminal, and sends the time to the first network element.
  • the embodiment of the present application provides a process in which the first network element determines the migration completion time of each first application server for the application context of the terminal.
  • the process includes:
  • Step A1 The first network element sends a first request message to each first application server.
  • each first application server receives the first request message from the first network element.
  • the first request message is used to request the first application server to complete the migration of the application context of the terminal.
  • the first request message may include first indication information, where the first indication information is used to request the first application server to complete the migration of the application context of the terminal.
  • the first request message includes one or more items of the second related information of the second application server and the size of the application context.
  • the second related information involved in this embodiment of the present application may refer to various information related to the second application server that can affect the completion time of the migration of the application context, and is not limited to the location information, load information or network conditions of the second application server one or more of. This avoids the process of the first application server acquiring one or more of the second related information and the size of the application context by itself.
  • the location information of the application server involved in this embodiment of the present application may be geographic location (such as longitude and latitude, neighborhood, etc.), topological location (such as TA ID, cell ID, etc.) or access information (such as DNAI, etc.), which is unified here. Description, which will not be repeated later.
  • the first application server determines the distance from the second application server according to the location information of the first application server. This is because considering that the distance affects the migration completion time, the migration completion time consumed by migrating the application context to the first application server A is usually higher than the migration completion time consumed by migrating the application context to the first application server B, The distance between the first application server A and the second application server is greater than the distance between the first application server B and the second application server.
  • the network conditions involved in the embodiments of the present application may refer to the network conditions between the first application server and the second application server, including but not limited to one or more of the following: bandwidth, packet loss rate, and the like.
  • the network status of the first application server or the network status of the second application server may refer to the above-mentioned network status.
  • Step A2 Each first application server sends the migration completion time of its application context for the terminal to the first network element.
  • the first network element obtains, from each first application server, the migration completion time of each first application server for the terminal's application context.
  • the method provided in this embodiment of the present application may further include: the first application server according to one or more of the first related information, the second related information, and the size of the application context Item, determine the completion time of the migration of the application context of the terminal by the first application server.
  • the first related information involved in this embodiment of the present application may refer to various information related to the first application server that may affect the completion time of the migration of the application context, and is not limited to location information, load information or network information corresponding to the first application server one or more of the conditions.
  • the first application server may request the first network element/second application server or the first enabling server for the second
  • the relevant information and the size of the application context are not limited in this embodiment of the present application.
  • step A1 may be omitted.
  • step A1 is reserved.
  • the first network element may send the first request message first.
  • the first network element provides the first application server with one or more items of the second related information of the second application server and the size of the application context. For example, the first network element sends the first request message to the first application server 1 and the first application server 2, and the first application server 1 feedbacks that the first application server 1 does not have the size of the application context, then the first network The meta can then send the size of the application context to the first application server 1 . If the first application server 2 feeds back that the first application server 2 does not have the location information of the second application server, the first network element may send the location information of the second application server to the first application server 2 again.
  • each first application server can also obtain one or more items from other network elements (such as the size of the application context).
  • the second application server or the first enabling server obtains one or more of the second related information of the second application server and the size of the application context, which is not limited in this embodiment of the present application.
  • the first application server obtains one or more items of the second related information of the second application server and the size of the application context from the second application server.
  • the situation 1) can be applied to the above scenarios 1) and 2).
  • the first network element before sending the first request message, can also: obtain the second correlation information of the second application server from the second application server One or more of information, size of application context.
  • the first network element may also perform the following steps before performing step A1: the first network element obtains one of the second related information of the second application server and the size of the application context from the first enabling server. item or multiple items.
  • the first enabling server and/or the second application server may actively send one of the second related information of the second application server and the size of the application context to the first network element or more.
  • one or more items of the second related information and/or the application context size are pre-stored in the second enabling server/first enabling server and/or the second application server.
  • the first enabling server may acquire one or more items of the second related information and/or the application context size from the second application server.
  • the first related information of each first application server may be pre-stored in the second enabling server, so that the second enabling server may not need to acquire one or more pieces of the first related information from each first application server. item steps.
  • the first network element obtains one of the second related information of the second application server and the size of the application context from the first enabling server and/or the second application server or more before, the method provided in this embodiment of the present application may further include: the first network element sends a third request message to the first enabling server and/or the second application server.
  • the first enabling server and/or the second application server receives the third request message from the first network element.
  • the third request message is used to request one or more of the second related information of the second application server and the size of the application context.
  • the third request message includes third indication information, where the third indication information is used to request one or more of the second related information of the second application server and the size of the application context.
  • the first network element may acquire the identifier of the first enabling server or the identifier of the second application server from the second network element.
  • the identifier of the first enabling server or the identifier of the second application server may be actively provided by the second network element to the first network element, or may be provided by the second network element to the first network element based on a request of the first network element.
  • the embodiments of the present application do not limit this.
  • the identifier of the first enabling server may be address information of the first enabling server.
  • the address information of the first enabling server may be an IP address, a fully qualified domain name (FQDN), a unified resource identifier (URI), and the like.
  • the identifier (eg, ID) of the second application server is used to identify a specific service, such as SA6 video, SA6 game, and so on.
  • Application servers that can provide a specific service share the same application server identifier.
  • the first network element receives the migration completion time of the application context of the terminal from the third network element.
  • the embodiment of the present application provides another process in which the first network element determines the migration completion time of the application context of each first application server for the terminal.
  • the process includes:
  • Step A3 The first network element sends the second request message to the third network element, and correspondingly, the third network element receives the second request message from the first network element.
  • the second request message is used to request the migration completion time of each first application server for the application context of the terminal.
  • the second request message includes second indication information, where the second indication information is used to request the migration completion time of each first application server for the application context of the terminal.
  • the second request message includes one or more of: first related information of each first application server, second related information of the second application server, and the size of the application context. This prevents the third network element from collecting and calculating the information on the completion time of the migration of the application context by itself.
  • the second request message may further include the identification or address information of each first application server, and/or the identification or address information of the second application server .
  • the third The network element may acquire respective first related information from each first application server according to the identification or address information of each first application server.
  • the third network element may acquire one or more of the second related information of the second application server and the size of the application context from the second application server according to the identification or address information of the second application server.
  • the second request message may include: the identification or address information of each first application server, the identification or address information of the first enabling server, the identification or address information of the second application server information.
  • the third network element can obtain one or more of the second related information of the second application server and the size of the application context from the first enabling server according to the identifier or address information of the first enabling server.
  • the third network element is a network element capable of determining the completion time of the migration of the application context of the terminal for each first application server.
  • the third network element is a data analysis network element or an edge configuration server or a policy control function (PCF) network element or a network exposure function (NEF) network element.
  • PCF policy control function
  • NEF network exposure function
  • Step A4 The third network element determines the migration of the application context of each first application server for the terminal according to one or more of the first related information, the size of the application context, and the second related information of each first application server Complete time.
  • the third network element can automatically select the corresponding The relevant information is collected at the network element of the network, and the specific process may refer to the description in the following embodiments, which will not be repeated here.
  • Step A5 The third network element sends the migration completion time of each first application server for the terminal's application context to the first network element.
  • the first network element receives the migration completion time of the application context of each first application server for the terminal from the third network element.
  • the third network element may actively send to the first network element the completion time of the migration of the application context of each first application server for the terminal.
  • step A3 may Omit.
  • the situation 2) can be applied to the above scenarios 1) and 2).
  • the first network element before sending the second request message, can also: obtain the second correlation information of the second application server from the second application server One or more of information, size of application context.
  • the first network element before sending the second request message, may further: obtain one or more of the second related information of the second application server and the size of the application context from the first enabling server.
  • the first network element may further: obtain the respective first related information of each first application server from each first application server.
  • each first application server actively sends the first relevant information of each first application server to the first network element.
  • the method provided by the embodiment of the present application may further include: The first network element sends a fourth request message to each first application server, where the fourth request message is used to request the first related information of the first application server.
  • each first application server actively sends the respective first related information to the first network element
  • the process of the first network element sending the fourth request message may be omitted.
  • the fourth request message includes fourth indication information, where the fourth indication information is used to request the first related information of the first application server.
  • the first network element determines the migration completion time of each first application server for the application context of the terminal.
  • the embodiment of the present application provides yet another process in which the first network element determines the migration completion time of each first application server for the application context of the terminal.
  • the process includes:
  • the first network element acquires one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context.
  • the foregoing manner 3-1 may be implemented in the following manner: the first network element obtains the second related information of the second application server from the second application server and/or the first enabling server , one or more of the size of the application context, the first enabling server is associated with the second application server.
  • the first network element when the first network element is the second enabling server, the first network element obtains the second related information of the second application server, the application context information from the first enabling server and/or the second application server one or more of the size.
  • the first enabling server may acquire one or more items of the second related information of the second application server and the size of the application context from the second application server.
  • the first network element When the first network element is the third enabling server, the first network element obtains one or more items of the second related information of the second application server and the size of the application context from the second application server.
  • the second application server and/or the first enabling server may actively send one or more of the second related information of the second application server and the size of the application context to the first network element.
  • the second application server and/or the first enabling server receives a request message from the first network element, where the request message is used to request the second related information of the second application server, the application context one or more of the size. After that, the second application server and/or the first enabling server sends one or more items of the second related information of the second application server and the size of the application context to the first network element.
  • the provided method may further include: the first network element sends a third request message to the second application server and/or the first enabling server, and correspondingly, the second application server and/or the first enabling server receives a message from the first network meta third request message.
  • the first enabling server may obtain from the second application server one or more of the second related information of the second application server and the size of the application context.
  • the second application server may send one or more of the second related information of the second application server and the size of the application context to the first enabling server actively or based on a request of the first enabling server.
  • Mode 3-2 The first network element determines each first application according to one or more of the first related information of each first application server, the second related information of the second application server, and the size of the application context The migration completion time of each server's application context for the terminal.
  • the first network element determines the application context transmission bit rate between the first application server and the second application server according to the first related information and the second related information, and then according to the transmission bit rate and The size of the application context is used to calculate the migration completion time of the application context.
  • the migration completion time of the application context is equal to the product of the size of the application context and the transmission bit rate of the application context.
  • the first network element obtains the first related information of each first application server, which can be implemented in the following manner: the first network element sends a fourth request message to each first application server, and the fourth request The message is used to request the first related information of the first application server.
  • the first network element receives the respective first related information of each first application server.
  • the above describes the process for the first network element to obtain the migration completion time of the application context of each first application server for the terminal from different perspectives.
  • the embodiment of the present application in the scenario of replacing the enabling server, in the case where the first network element is the second enabling server and the second network element is the enabling client, the embodiment of the present application provides The method further includes: the second network element sends an identification (eg, address information) of the first enabling server to the first network element.
  • the second network element receives the identifier of the first enabling server from the first network element.
  • FIG. 7 is another communication method provided by an embodiment of the application, and the communication method includes:
  • Step 701 The first network element obtains the second information.
  • the second information includes one of the first related information of each of the one or more first application servers associated with the first network element, the second related information of the second application server, and the size of the application context. item or multiple items.
  • the application context is information on the second application server for the first application of the terminal.
  • the second application server is an application server that currently provides services for the terminal.
  • the second related information includes one or more of location information, load information, or network conditions of the second application server.
  • the first related information includes one or more of location information, load information, or network conditions of the first application server.
  • Step 702 The first network element sends second information to the second network element.
  • the second network element receives the second information from the first network element.
  • the second information is used to determine a target application server that provides services for the terminal among the one or more first application servers.
  • the first network element may send a first message to the second network element, where the first message carries the second information.
  • the first network element receives a second message from the second network element before performing step 701
  • the second message is used to request the first network element to provide a first application server for determining
  • the first message may be a response message for the second message.
  • the second message may be an EAS discovery request
  • the first message may be an EAS discovery response.
  • the second message is an EAS discovery subscription request
  • the first message may be an EAS discovery notification or an EAS subscription response.
  • Step 703 The second network element determines, according to the second information, a target application server that provides services for the terminal from one or more first application servers.
  • step 703 may be implemented in the following manner: the second network element determines, according to the second information, the completion time of the migration of the application context of each first application server for the terminal.
  • the second network element determines, from one or more first application servers, a target application server that provides services for the terminal according to the completion time of migration of the application context of the terminal by each first application server.
  • An embodiment of the present application provides a communication method.
  • the application context of the terminal on the second application server needs to be migrated to the target application server , although one or more first application servers can provide services for the terminal, due to the difference in the migration completion time required for the application context to be migrated to each first application server, during the application context migration process, it will cause the terminal
  • the application service is temporarily suspended or interrupted, so the migration completion time will affect the operation of the first application of the terminal.
  • the first network element obtains the second information and provides the second network element with the second information.
  • the second information includes one of the first related information of each of the one or more first application servers associated with the first network element, the second related information of the second application server, and the size of the application context or more.
  • the content contained in the second information can be used to determine the completion time of the migration of the application context of each first application server for the terminal. Therefore, after the first network element provides the second information to the second network element, it is convenient for the second network element to The element determines, from one or more first application servers, a target application server that provides services for the terminal according to the second information.
  • the first network element in the embodiment shown in FIG. 7 may be a third enabling server.
  • the second network element may be an enabling client or a second application server.
  • the third enabling server may be enabling server 109, as shown in FIG. 1b.
  • the second application server may be the source application server 105 .
  • the enabling client can be EEC103.
  • the first network element in the embodiment shown in FIG. 7 may be the second enabling server, and the second network element may be the enabling client. At this time, the enabling client has accessed the second enabling server.
  • the first network element may be the second enabling server or the first enabling server, the first application server, the ECS.
  • the second network element may be the first enabling server or the second application server.
  • the second enabling server may be the target enabling server 102.
  • the second application server may be the source application server 105 .
  • the enabling client can be EEC103.
  • the first enabling server may be the source enabling server 101 .
  • the above step 701 may be implemented in the following manner: the first network element receives the second related information, the application context information from the second application server or the second application server of the first enabling server one or more of the size.
  • the first enabling server is associated with the second application server.
  • the second application server or the first enabling server may actively send one or more of the second related information of the second application server and the size of the application context to the first network element.
  • the method provided by the embodiment of the present application further includes: the first network element sends a third request message to the second application server or the first enabling server, and correspondingly, the second application server or the first enabling server receives a message from the first network element. meta third request message.
  • the third request message is used to request one or more of the second related information of the second application server and the size of the application context.
  • the method provided by the embodiment of the present application further includes: the first network element receives the address information of the first enabling server from the second network element, and the first enabling server communicates with the second application Server association.
  • the process of acquiring the first related information of each first application server by the first network element may refer to the description in the foregoing embodiment, which will not be repeated here.
  • the method provided in this embodiment of the present application further includes: the first enabling server sends the first network element
  • the fifth request message correspondingly, the first network element receives and sends the fifth request message from the first enabling server.
  • the fifth request message is used to request the first related information of at least one second application server associated with the first network element.
  • the fifth request message includes fifth indication information, where the fifth indication information is used to request first related information of at least one second application server associated with the first network element.
  • Step 801 the EEC sends an EAS discovery request to the EES, and correspondingly, the EES receives the EAS discovery request from the EEC.
  • the EAS discovery request includes the identifier of the EAS.
  • the EAS discovery request may further include the expected application context migration completion time.
  • Step 802 the EES authenticates the EEC.
  • step 802 For the specific implementation of step 802, reference may be made to the description in the prior art, and details are not repeated here.
  • Step 803 In the case that the authentication is passed, the EES discovers one or more T-EASs.
  • Step 804 The EES determines the completion time of the migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • step 804 may be implemented in the following manner: the EES acquires one or more of the size of the application context for the terminal on the S-EAS and the second related information of the S-EAS. The EES acquires the first relevant information of each T-EAS. The EES determines the migration completion time of each T-EAS for the terminal's application context according to one or more of the first related information of each T-EAS, the second related information of the S-EAS, and the size of the application context.
  • the EES determines, according to one or more of the first related information of the T-EAS3, the size of the application context, and the second related information of the S-EAS, that the T-EAS3 The migration completion time of the application context of the terminal.
  • the EES may obtain one or more of the size of the application context for the terminal on the S-EAS and the second related information of the S-EAS by using the embodiment shown in FIG. 10 .
  • obtaining one or more of the first related information of each T-EAS and the second related information of S-EAS about the EES can be implemented by the embodiment shown in FIG. 11 .
  • the method provided in this embodiment of the present application may further include: any one of case A and case B.
  • case A may include step 805a and step 806a.
  • Case B may include steps 805b and 806b.
  • Step 805a the EES selects T-EAS1 according to the completion time of migration of the application context of the terminal for each T-EAS.
  • a possible selection manner is that the T-EAS1 selected by the EES has the shortest time for the migration of the application context of the terminal to be completed among one or more T-EASs.
  • another possible selection manner is that the T-EAS1 selected by the EES has a lower application context migration completion time for the terminal than the expected application context migration completion time, which is not limited in this embodiment of the present application.
  • the T-EAS1 may represent at least one T-EAS in which the migration completion time of the application context is lower than the expected migration completion time of the application context.
  • Step 806a the EES sends an EAS discovery response to the EEC. Accordingly, the EEC receives the EAS discovery response from the EES.
  • the EAS discovery response includes T-EAS1 information.
  • the information of T-EAS1 is used to identify T-EAS1.
  • the information of the T-EAS1 may be address information, identification, and the like of the T-EAS1.
  • the EES may also send information to the EEC for indicating the completion time of the migration of the application context of the terminal by the T-EAS1.
  • the information used to indicate the completion time of the migration of the application context of the T-EAS1 to the terminal may be the completion time of the migration of the application context of the terminal by the T-EAS1, or the first related information of the T-EAS1, the first relevant information of the S-EAS One or more of two related information and the size of the application context, which is not limited in this embodiment of the present application.
  • the information used to indicate the completion time of the migration of the application context of the T-EAS1 for the terminal is carried in the EAS discovery response, so as to save signaling overhead between network elements.
  • the EES can select a T-EAS1 that can provide services for the terminal according to the completion time of migration of the application context of each T-EAS for the terminal.
  • the method provided by this embodiment of the present application may further include: step 805b and step 806b.
  • Step 805b the EES sends an EAS discovery response to the EEC. Accordingly, the EEC receives the EAS discovery response from the EES.
  • the EAS discovery response includes the completion time of migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • the EAS discovery response may also include the EAS profile of each T-EAS.
  • the migration completion time of a T-EAS for the application context of the terminal may be included in the EAS profile of the T-EAS, or may not be included in the EAS profile.
  • the migration completion time of the T-EASn for the application context of the terminal may be included in the EAS profile of the T-EASn.
  • Step 806b The EEC selects T-EAS2 from one or more T-EASs according to the completion time of migration of the application context of the terminal for each T-EAS.
  • T-EAS2 and T-EAS1 can be the same T-EAS or different T-EAS.
  • steps 805a and 806a can be omitted, or if the EES executes steps 805b and 806b, then steps 805a and 806a can be omitted, This embodiment of the present application does not limit this.
  • the EES may screen out at least one T-EAS from one or more T-EASs. Then, the EES sends to the EEC the migration completion time of each T-EAS in the at least one T-EAS for the application context of the terminal. For example, the EES can reject the T-EAS with the highest migration completion time, or reject the T-EAS that is higher than the preset time threshold, thereby screening out at least one T-EAS.
  • step 803 EES discovers the migration completion time according to the expected application context migration received in step 801 T-EAS, for example, the discovered T-EAS must be a T-EAS that can satisfy the migration time of the application context is less than or equal to the expected migration completion time of the application context; or after step 804, the EES according to the expectation received in step 801
  • the migration completion time of the application context is determined from the migration completion time corresponding to the one or more T-EASs determined in step 804, and the information of at least one or more T-EASs is determined.
  • the EES sends the information of at least one T-EAS to the EEC.
  • the EES may not execute any one of Case A and Case B.
  • the migration completion time of the at least one T-EAS for the application context of the terminal is less than or equal to the expected application context migration completion time.
  • the expected application context migration completion time carried in the EAS discovery request indicates the requirement for application context migration time for T-EAS discovery or selection.
  • a specific example is that the expected application context migration completion time is 10 milliseconds, which means that the application context migration time between the discovered or selected T-EAS and the S-EAS cannot exceed 10 milliseconds.
  • FIG. 9 shows another method for selecting T-EAS provided by the embodiment of the present application.
  • the first network element is EES
  • the second network element is EEC
  • the first application server is T-EAS
  • EAS is EAS
  • the second application server is S-EAS as an example
  • the method includes:
  • Step 901 Execute a complete EEC subscription EAS discovery process to the EES. This process is in the prior art, and the purpose is to trigger the EAS discovery notification process when the trigger condition is satisfied.
  • Step 902 the EAS finds that the notification triggering condition is satisfied, and the EES triggers the notification process.
  • step 902 the EEC sends the expected application context migration completion time to the EES.
  • Step 903 the EES discovers one or more T-EASs.
  • Step 904 is the same as step 804, and details are not repeated here.
  • Step 905a is the same as step 805a and will not be repeated here.
  • Step 906a the EES sends an EAS discovery notification to the EEC. Accordingly, the EEC receives the EAS discovery notification from the EES.
  • the EAS discovery notification includes the information of T-EAS1.
  • the EES can select a T-EAS that can provide services for the terminal according to the completion time of migration of each T-EAS for the terminal's application context.
  • step 904 the embodiment shown in FIG. 9 may further include step 905b and step 906b.
  • Step 905b the EES sends an EAS discovery notification to the EEC.
  • the EEC receives the EAS discovery notification sent by the EEC from the EES.
  • the EAS discovery notification includes the completion time of migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • the EAS discovery response may further include the EAS profile of each T-EAS.
  • the migration completion time of a T-EAS for the application context of the terminal may be included in the EAS profile of the T-EAS, or may not be included in the EAS profile.
  • Step 906b the EEC selects T-EAS2 from one or more T-EASs according to the completion time of migration of the application context of the terminal for each T-EAS.
  • steps 905a and 906a if the EES executes steps 905a and 906a, then steps 905b and 906b can be omitted, or if the EES executes steps 905b and 906b, then steps 905a and 906a can be omitted, This embodiment of the present application does not limit this.
  • step 903 EES discovers the migration completion time according to the expected application context migration received in step 901 T-EAS.
  • the discovered T-EAS must be a T-EAS that can satisfy the migration time of the application context is less than or equal to the migration completion time of the expected application context; or after step 904, the EES according to the expected application context received in step 901.
  • Migration Completion Time Information of at least one or more T-EASs is determined from the migration completion time corresponding to one or more T-EASs determined in step 904 .
  • the EES sends the information of at least one T-EAS to the EEC.
  • the EES may not execute any one of Case A and Case B.
  • the migration completion time of the at least one T-EAS for the application context of the terminal is less than or equal to the expected application context migration completion time.
  • Fig. 8 is based on the "request-response" model of the T-EAS discovery process initiated by EEC, while Fig. 9 is based on the EAS discovery subscription-notification model" Subscription process.
  • FIG. 10 is one or more of the size of the application context for the terminal on the S-EAS and the second related information of the S-EAS obtained by an EES provided by an embodiment of the present application, and the method includes:
  • Step 1001 the EES sends a request message 1 to the S-EAS.
  • the S-EAS receives the request message 1 from the EES.
  • the request message 1 is used to request one or more of the size of the application context of the terminal and the second related information of the S-EAS.
  • the request message 1 may include the identifier of the terminal, so that the S-EAS can determine the terminal corresponding to the size of the application context provided to the EES.
  • the EAS provides the application contexts of multiple applications to the EES as the application contexts of the terminal, which may be referred to as terminal-granular application contexts.
  • the request message 1 may further include the identifier of the first application, which facilitates the S-EAS to determine the size of the application context of the first application that provides the terminal to the EES, which may be referred to as the application context of application granularity.
  • the request message 1 may further include the identifier of the EEC, so that the S-EAS can determine the EEC corresponding to the application context provided to the EES.
  • the request message 1 is used to request one or more of the size of the application context, the load information of the S-EAS, and the network condition.
  • the request message 1 is used to request in addition to one or more of the size of the application context, the load information of the S-EAS, and the S-EAS network condition. In addition, it can also be used to request the location information of the S-EAS.
  • the request message 1 is used to request one or more of the network status of the S-EAS and the location information of the S-EAS.
  • Step 1002 the S-EAS sends a response message 1 to the EES.
  • the EES receives the response message 1 from the S-EAS.
  • the response message 1 includes one or more of the size of the application context and the second related information of the S-EAS.
  • step 1001 may be omitted.
  • FIG. 11 is a process for an EES to obtain the first related information of each T-EAS according to an embodiment of the present application.
  • one or more T-EASs include T-EAS1 , . . . T -EASn as an example, the method includes:
  • Step 1101 the EES sends a request message 2 to each T-EAS in the T-EAS1, . . . T-EASn.
  • each T-EAS receives the request message 2 from the EES.
  • the request message 2 is used to request one or more of load information, location information, and network conditions of the T-EAS.
  • the content requested by the request message 2 sent by the EES to different T-EASs may be the same or different.
  • the request message 2 sent by the EES to the T-EAS1 is also used to request the location information of the T-EAS1, but the EES sends the location information of the T-EAS1 to the T-EAS1.
  • the request message 2 sent by the EAS2 does not need to request the location information of the T-EAS2.
  • the request message 2 includes indication information 2, where the indication information 2 is used to request one or more of load information, location information, and network conditions of the T-EAS.
  • Step 1102 each T-EAS sends a response message 2 to the EES. Accordingly, the EES receives the response message 2 from each T-EAS.
  • the response message 2 of a T-EAS includes one or more of load information, location information, and network conditions of the T-EAS.
  • T-EAS1 provides EES with the load information and network status of T-EAS1
  • T-EAS2 provides EES with the information of T-EAS1.
  • Load information, network conditions, and location information can be the same or different.
  • both T-EAS1 and T-EAS2 provide EES with their respective load information and network conditions.
  • the above step 1101 may be omitted.
  • the EES obtains the required information from the S-EAS as an example.
  • the EES in Figure 11 can also be replaced with S-EES/T-EES.
  • the T-EAS can also be replaced by the EAS currently serving the terminal.
  • the EEC will first trigger a service provisioning process, in which the EEC interacts with the ECS to obtain the identification and address information of the T-EES.
  • the T-EES is the EES that can provide services for the terminal. In this case, it is assumed that the EEC has access to the T-EES. Then, as shown in FIG.
  • T-EES the first network element as T-EES
  • EEC the first application server as T-EAS
  • S-EAS the second application server as S-EAS
  • Step 1201 the EEC acquires the address information of the T-EES, and accesses the T-EES.
  • step 1201 may be implemented in the following manner: the manner in which the EEC acquires the T-EES address information may be acquired from the ECS through the service provisioning process.
  • Step 1202 the EEC sends an EAS discovery request to the T-EES. Accordingly, the T-EES receives the EAS discovery request from the EEC.
  • the difference between the EAS discovery request in step 801 and the EAS discovery request in step 1202 lies in at least one of the following two items in the EAS discovery request in step 1202:
  • the location information of the S-EAS can be geographic location (such as latitude and longitude, neighborhood, etc.), topological location (such as TA ID, cell ID, etc.) or access information (such as DNAI, etc.).
  • the S-EAS is the EAS that currently provides services for the terminal, that is, the EAS that provides services for the terminal before the terminal accesses the T-EAS.
  • S-EES address information can be IP address, FQDN, URI, etc.
  • S-EAS ID identifies specific services, such as SA6 video, SA6 game, etc. EASs that can provide a specific service share the same EAS ID.
  • the EAS discovery request may further include the identifier of the S-EAS.
  • Steps 1203 to 1205 are the same as steps 802 to 804, and are not repeated here.
  • Steps 1206a to 1207b are the same as steps 805a to 806a, and will not be repeated here.
  • Steps 1206b to 1207b are the same as steps 805b to 806b, and will not be repeated here.
  • the T-EES sends the information of at least one T-EAS to the EEC.
  • the migration completion time of at least one T-EAS for the terminal's application context is less than or equal to the expected application context migration completion time.
  • the T-EES completes the migration according to the expected application context received in step 1202 Time discovery T-EAS, for example, the discovered T-EAS must be a T-EAS that can satisfy the migration time of the application context is less than or equal to the expected migration completion time of the application context.
  • the T-EES selects one of the In the migration completion times corresponding to the multiple T-EASs, information of at least one or more T-EASs is determined.
  • the T-EES sends the information of at least one T-EAS to the EEC.
  • the T-EES may not execute any one of Case A and Case B.
  • the migration completion time of the at least one T-EAS for the application context of the terminal is less than or equal to the expected application context migration completion time.
  • FIG. 13 shows another method for selecting T-EAS provided by the embodiment of the present application, which includes:
  • Subscription process part and notification part wherein the subscription process part includes steps 1301 to 1303, and the notification part includes steps 1304 to 1307b:
  • Step 1301 the EEC discovers the T-EES.
  • step 130 For the specific implementation of step 1301, reference may be made to the description in the foregoing step 1201, which will not be repeated here.
  • Step 1302 the EEC sends an EAS discovery subscription request to the T-EES. Accordingly, the T-EES receives the EAS discovery subscription request from the EEC. The EAS discovers that the subscription request is used for subscribing to the second information. The second information is used to determine the migration completion time of each T-EAS for the application context of the terminal.
  • Step 1303 when the authentication is passed, the T-EES sends an EAS subscription response to the EEC. Accordingly, the EEC receives the EAS subscription response from the T-EES.
  • the EAS subscription response is used to notify the EEC of successful subscription (or subscription failure), including information such as the ID or valid time of the subscription.
  • Step 1304 the T-EES triggers an EAS discovery notification.
  • Step 1305 the T-EES discovers one or more T-EASs.
  • Step 1306 The T-EES determines the completion time of migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • step 1306 For the specific implementation of step 1306, reference may be made to the embodiment described in any one of FIG. 14 to FIG. 16 , and details are not repeated here.
  • Steps 1307a to 1308a are the same as steps 905a to 905b.
  • Steps 1307b to 1308b are the same as steps 905b to 906b.
  • the T-EES sends the information of at least one T-EAS to the EEC.
  • the migration completion time of at least one T-EAS for the terminal's application context is less than or equal to the expected application context migration completion time.
  • the EES/T-EES determines the migration completion time of each T-EAS for the application context of the terminal, and according to each T- Select a T-EAS for the migration completion time corresponding to the EAS, or send the migration completion time corresponding to each T-EAS to the EEC, and the EEC selects the T-EAS according to the migration completion time corresponding to each T-EAS.
  • the first network element is the T-EES as an example, and the method includes:
  • Step 1401 The T-EES sends a request message 3 to the S-EES.
  • the S-EES receives the request message 3 from the T-EES.
  • the request message 3 is used to request the size of the application context of the terminal and/or the second related information of the S-EAS.
  • the request message 3 includes the identifier of the S-EAS.
  • the request message 5 includes indication information, where the indication information is used to request the size of the application context of the terminal and/or the second related information of the S-EAS.
  • the request message 3 further includes the identifier of the terminal, so that the S-EES can provide the T-EES with the size of the terminal's application context and/or the second related information of the S-EAS to the T-EES.
  • the request message 3 further includes the identifier of the first application. In this way, the S-EES can provide the T-EES with the size of the application context of the terminal whose strength is the first application of the terminal, and/or the second related information of the S-EAS.
  • Step 1402 In response to the request message 3 from the T-EES, the S-EES provides the T-EES with the size of the application context of the terminal and/or the second related information of the S-EAS. Correspondingly, the T-EES receives the size of the application context of the terminal from the S-EES, and/or the second related information of the S-EAS.
  • the above step 1401 may be omitted.
  • steps 1401 and 1402 may be omitted. In the case that the T-EES does not have the size of the application context of the terminal, and/or the second related information of the S-EAS, steps 1401 and 1402 need to be performed.
  • the above method may further include: the S-EES obtains from the S-EAS The size of the application context of the terminal, and/or the second related information of the S-EAS.
  • Step 1403 the T-EES discovers one or more T-EASs.
  • Step 1404 the T-EES sends a request message 4 to each T-EAS.
  • each T-EAS receives a request message 4 from the T-EES.
  • the request message 4 is used to request the first related information of the T-EAS. It should be noted that, if the location information of the T-EAS is stored in the T-EES, the request message 4 does not need to request the location information of the T-EAS.
  • Step 1405 Each T-EAS provides the T-EES with its own first related information.
  • the T-EES does not need to perform step 1404.
  • Step 1406 The T-EES determines the migration completion time of each T-EAS for the terminal's application context according to one or more of the respective first related information, second related information, and the size of the application context of each T-EAS. .
  • steps 1401 to 1402 and steps 1404 to 1405 are not in order, and it is only necessary that the T-EES can obtain the above information before step 1406 is executed, which is not done in this embodiment of the present application. limited.
  • the T-EES determines each The completion time of the migration of the application context of the terminal for the T-EAS. Among them, the T-EES obtains the load information of the T-EAS from the T-EAS, obtains the location information of the T-EAS from the T-EES or the T-EAS, and obtains the size of the application context from the S-EES or calling the process of this embodiment. and the second related information of S-EAS.
  • FIG. 15 provides another method for determining the migration completion time of each T-EAS for the application context of the terminal provided by the embodiment of the present application.
  • one or more T-EASs include T-EAS EAS1, ..., T-EAS2n, n is an integer greater than or equal to 1 as an example, the method includes:
  • Steps 1501 to 1503 are the same as steps 1401 to 1403, and will not be repeated here.
  • Step 1504a the T-EES sends the request message 5 to the T-EAS1, and correspondingly, the T-EAS1 receives the request message 5 from the T-EES.
  • the request message 5 is used to request the T-EAS1 to complete the migration of the application context of the terminal.
  • the request message 5 carries the size of the application context and the second related information of the S-EAS.
  • Step 1505a the T-EAS1 determines that the migration of the application context of the T-EAS1 to the terminal is completed according to one or more of the second related information of the S-EAS, the first related information of the T-EAS1, and the size of the application context. time.
  • the T-EAS1 can also send the request message 5 from the T-EES/S-EAS
  • the size of the application context and the second related information of the S-EAS are obtained from the EES/S-EAS.
  • Step 1506a the T-EAS1 sends to the T-EES the transition completion time of the application context of the terminal by the T-EAS1.
  • the T-EES receives the transition completion time of the T-EAS1 for the terminal's application context from the T-EAS1.
  • Step 1504b the T-EES sends a request message 6 to the T-EASn.
  • the T-EAS2 receives the request message 6 from the T-EES.
  • the request message 6 is used to request the T-EAS2 to complete the migration of the application context of the terminal.
  • the request message 6 carries the size of the application context and the second related information of the S-EAS.
  • the T-EASn determines that the migration of the application context of the terminal by the T-EASn is completed according to the second related information of the S-EAS, the first related information of the T-EASn, and one or more of the size of the application context. time.
  • Step 1506b the T-EASn sends to the T-EES the transition completion time of the application context of the terminal by the T-EASn.
  • the T-EES receives the transition completion time of the T-EAS2 from the T-EASn for the application context of the terminal.
  • steps 1505b to 1506b For the specific implementation of steps 1505b to 1506b, reference may be made to the descriptions of the above steps 1505a to 1506a, and details are not repeated here.
  • FIG. 16 provides another method for determining the migration completion time of each T-EAS for the application context of the terminal provided by the embodiment of the application.
  • one or more T-EASs include T-EAS1, . . . , T- Take EASn as an example, the method includes:
  • Steps 1601 to 1603 are the same as steps 1401 to 1403, and will not be repeated here.
  • Step 1604a the T-EES sends a request message 7 to the T-EAS1.
  • the T-EAS1 receives the request message 7 from the T-EES.
  • the request message 7 is used to request the first related information of the T-EAS1.
  • the request message 7 carries the indication information 7, and the indication information 7 is used to request the first related information of the T-EAS1.
  • Step 1605a the T-EAS1 sends one or more items of load information, location information, and network conditions of the T-EAS1 to the T-EES.
  • the T-EES receives one or more of load information, location information, and network conditions of the T-EAS1 from the T-EAS1.
  • Step 1604b the T-EES sends a request message 8 to the T-EASn.
  • the T-EASn receives the request message 8 from the T-EES.
  • the request message 8 is used to request the first related information of the T-EASn.
  • the request message 8 carries the indication information 8, and the indication information 8 is used to request the first related information of the T-EASn.
  • T-EES can obtain the load information of T-EAS1, but obtain the load information and location information of T-EASn.
  • Step 1605b the T-EASn sends one or more items of load information, location information, and network conditions of the T-EASn to the T-EES.
  • the T-EES receives one or more of load information, location information, and network conditions of the T-EASn from the T-EASn.
  • Step 1606 the T-EES sends a request message 9 to the ECS or NWDAF network element.
  • the ECS or NWDAF network element receives the request message 9 from the T-EES.
  • the request message 9 is used to request the migration completion time of each T-EAS in the T-EAS1, . . . , T-EASn for the application context of the terminal.
  • the request message 9 carries the indication information 9 .
  • the indication information 9 is used to request the migration completion time of the application context of the terminal for each T-EAS in the T-EAS1, . . . , T-EASn.
  • the request message 9 includes one or more of the following information: the first related information of each T-EAS, the size of the application context, and the second related information of the S-EAS.
  • the above steps 1604a to 1605a and steps 1604b to 1605b may be omitted. If there is a part of the first related information of the T-EAS on the T-EES, only the step of acquiring the first related information from these T-EASs may be omitted.
  • the above steps 1601 to 1602 may be omitted.
  • Step 1607 The ECS or NWDAF network element determines, according to one or more of the first related information of each T-EAS, the second related information of the S-EAS, and the size of the application context, the size of each T-EAS for the terminal. The migration completion time of the application context.
  • the ECS or NWDAF network element before executing step 1607 It may also include: the ECS or NWDAF network element obtains one or more of the first related information of each T-EAS, the second related information of the S-EAS, and the size of the application context.
  • the ECS or NWDAF network element may acquire one or more of the first related information of each T-EAS, the second related information of the S-EAS, and the size of the application context from the T-EES, which At this time, the T-EES can obtain the required information by performing steps 1601 to 1602, steps 1604a to 1605a, and steps 1604b to 1605b, and provide it to the ECS or NWDAF network element.
  • the ECS or NWDAF network element may acquire the respective first related information of each T-EAS from each T-EAS, and acquire the size of the application context, the S-EAS or the S-TEES from the S-EAS or the S-TEES Second related information for EAS.
  • the T-EES may provide the ECS or the NWDAF, for example, the identifiers such as the address information of the S-EAS or the S-TEES are carried in the request message 9 .
  • Step 1608 The ECS or NWDAF network element provides the T-EES with the completion time of migration of the application context of the terminal for each T-EAS.
  • ECS or NWDAF network element can be deployed by any non-edge, and the application context of each T-EAS for the terminal can be determined according to the size of the application context, as well as the location and load information of the S-EAS and each T-EAS NE replacement at the migration completion time, for example, ECS or NWDAF NEs can be replaced by NEF NEs or PCF NEs.
  • a method for selecting a T-EAS includes:
  • Steps 1701 to 1703 are the same as steps 801 to 803, and are not repeated here.
  • Step 1704 the EES determines one or more of location information, load information or network conditions of each of the one or more T-EASs.
  • step 1704 reference may be made to the relevant description in the embodiment shown in FIG. 11 above, and details are not repeated here.
  • step 1704 can be omitted, if the EES does not have the location information, load information or network condition of each T-EAS or If only part of the above information or the location information, load information or network status of the T-EAS is available, the EES can obtain the remaining required information in the manner shown in FIG. 11 .
  • Step 1705 the EES determines the size of the application context of the terminal, and one or more of the location information, load information or network conditions of the S-EAS.
  • step 1705 For the implementation of step 1705, reference may be made to the description in the above-mentioned embodiment shown in FIG. 10, and details are not repeated here.
  • step 1705 can be omitted, if the EES does not have the size of the application context and the location of the S-EAS information, load information or network conditions or only some of the above information, the EES can obtain the required information in the manner shown in FIG. 10 .
  • Step 1706 the EES sends an EAS discovery response to the EEC. Accordingly, the EEC receives the EAS discovery response from the EES.
  • the EAS discovery response includes one or more of the following information: the size of the application context, and one or more of S-EAS location information, load information or network conditions, location information of each T-EAS, One or more of load information or network conditions.
  • Step 1707 EEC according to one or more of the following information: the size of the application context, and one or more of the location information, load information or network conditions of the S-EAS, the location information and load information of each T-EAS or one or more of the network conditions, select one T-EAS from one or more T-EASs to provide services for the terminal.
  • step 1707 may be implemented in the following manner: EEC according to one or more of the following information: the size of the application context, and one or more of the location information, load information or network conditions of the S-EAS, each One or more of the location information, load information, or network conditions of each T-EAS determines the completion time of migration of the application context of the terminal targeted by each T-EAS.
  • the EEC selects one T-EAS from one or more T-EASs to provide services for the terminal according to the migration completion time of the application context of the terminal targeted by each T-EAS.
  • the EEC determines the T-EAS1 according to the size of the application context and one or more of the location information, load information or network conditions of the S-EAS, and one or more of the location information, load information or network conditions of the T-EAS1.
  • this application implements The example provides a method for selecting T-EAS, which includes:
  • Steps 1801 to 1804 are the same as steps 1201 to 1204, and will not be repeated here.
  • Step 1805 the EES determines one or more of location information, load information, or network conditions of each of the one or more T-EASs.
  • step 1805 for the specific implementation of step 1805, reference may be made to the descriptions in steps 1404 to 1405, and details are not repeated here.
  • Step 1806 the EES determines the size of the application context, and one or more of the location information, load information or network conditions of the S-EAS.
  • step 1806 reference may be made to the descriptions at steps 1401 to 1402 .
  • Steps 1807 to 1808 are the same as steps 1706 to 1707, and are not repeated here.
  • the embodiment of the present application provides another method for determining the T-EAS. As shown in FIG. 19 , the method includes:
  • Steps 1901 to 1903 are the same as steps 901 to 903 .
  • Steps 1904 to 1905 are the same as steps 1704 to 1705, and are not repeated here.
  • Step 1906 the EES sends an EAS discovery notification to the EEC.
  • EEC receives EAS discovery notifications from EES.
  • the EAS discovery notification includes one or more of the following information: the size of the application context, and one or more of the S-EAS location information, load information or network conditions, the location information of each T-EAS, One or more of load information or network conditions.
  • Step 1907 is the same as step 1707 and will not be repeated here.
  • the embodiment of the present application provides another method for determining the T-EAS, and the method includes:
  • Step 2001 the EEC discovers the T-EES.
  • step 2001 For the specific implementation of step 2001, reference may be made to the description at step 1301 above, and details are not repeated here.
  • Step 2002 the EEC sends an EAS discovery subscription request to the T-EES. Accordingly, the T-EES receives the EAS discovery subscription request from the EEC. The EAS discovers that the subscription request is used for subscribing to the second information. The second information is used to determine the migration completion time of each T-EAS for the application context of the terminal.
  • the EAS discovers that the subscription request carries the address information of the S-EES, which facilitates the T-EES to determine the address of the S-EES that previously provided services for the terminal.
  • the EAS discovery subscription request also carries the location information of the S-EAS or one or more of the identifiers, so that the T-EES can determine which EAS is the S-EAS currently serving the terminal, so as to facilitate subsequent execution.
  • the size of the application context and one or more of the location information, load information or network conditions of the S-EAS are acquired from the S-EAS.
  • Step 2003 In the case of passing the authentication, the T-EES sends an EAS subscription response to the EEC. Accordingly, the EEC receives the EAS subscription response from the T-EES.
  • the above steps 2001 to 2003 can be regarded as a subscription process.
  • Step 2004 the T-EES triggers an EAS discovery notification.
  • Step 2005 the T-EES discovers one or more T-EASs.
  • Step 2006 the T-EES determines one or more of location information, load information, or network conditions of each of the one or more T-EASs.
  • step 2006 reference may be made to the relevant description at 1805 above, which will not be repeated here.
  • Step 2007, the T-EES determines the size of the application context of the terminal, and one or more of the location information, load information or network conditions of the S-EAS.
  • step 2007, reference may be made to the relevant description at 1806 above, which will not be repeated here.
  • step 2007 can be omitted.
  • Steps 2008 to 2009 are the same as steps 1906 to 1907, and are not repeated here.
  • the T-EES provides the EEC with information X for determining the migration completion time of each first application server for the application context of the terminal .
  • information X includes one or more of the following: application context size, and one or more of S-EAS location information, load information or network conditions, location information, load information or network status of each T-EAS situation.
  • the EEC selects a T-EAS serving the terminal.
  • FIG. 19 adopts the "request-response" model of the T-EAS discovery process initiated by the EEC.
  • Figure 20 adopts the "subscribe-notify" model of the T-EAS discovery process initiated by the EEC.
  • the embodiment of the present application provides another method for selecting T-EAS, and the method includes:
  • Step 2101 the S-EAS sends an EAS discovery request 10 to the S-EES. Accordingly, the S-EES receives the EAS discovery request 10 from the S-EAS.
  • the EAS discovery request 10 is used to request the S-EES to provide the completion time of migration of the application context for the terminal for each T-EAS in the T-EAS that can provide services to the terminal.
  • the EAS discovery request 10 includes the S-EAS ID, and the information used by the S-EAS side to determine the migration completion time, the information includes but is not limited to the following: the location information of the S-EAS, the load information of the S-EAS, the S-EAS - One or more of the network status of the EAS and the size of the application context of the terminal.
  • the message need not contain such information of the S-EAS.
  • Step 2102 After the S-EES receives the EAS discovery request 10 from the S-EAS, it determines to execute ACR. That is, the next steps are performed.
  • step 2102 and step 2101 are executed if and only when the process is a T-EAS discovery process initiated by the S-EAS.
  • Step 2103 the S-EES interacts with the ECS, and obtains the ID and address information of the T-EES to access the T-EES.
  • Step 2104 the S-EES sends the EAS discovery request 11 to the T-EES, and correspondingly, the T-EES receives the EAS discovery request 11 from the S-EES.
  • the EAS discovery request 11 is used to request the T-EES to provide the migration completion time of each T-EAS in the discovered T-EAS for the terminal's application context.
  • the EAS discovery request 11 includes one or more of the location information of the S-EAS, the network status of the S-EAS, the load information of the S-EAS, and the size of the application context.
  • the EAS discovery request 11 may further include an S-EES identifier, an S-EAS identifier.
  • step 2101 If step 2101 is executed, then one or more of the location information of the S-EAS, the network status of the S-EAS, the load information of the S-EAS, and the size of the application context can be obtained through step 2101, or the S-EES
  • the location information of the S-EAS, the network status of the S-EAS, the load information of the S-EAS, and some information in the size of the application context are stored locally.
  • the S-EES can obtain the location information of the S-EAS, the network status of the S-EAS, and the load information of the S-EAS from the S-EAS through the methods described in the embodiments shown in FIG. 10 and FIG. 11 . , all or part of the information in the size of the application context.
  • Step 2105 the T-EES determines one or more T-EASs.
  • Step 2106 The T-EES determines the completion time of migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • the embodiment shown in FIG. 21 may further include steps 2107a and 2108a.
  • Step 2107a the T-EES selects T-EAS1 according to the completion time of migration of the application context of the terminal for each T-EAS.
  • a possible selection method is that the migration completion time of the T-EAS1 selected by the T-EES for the application context of the terminal is the shortest among one or more T-EASs.
  • the selected T-EAS1 The number of EAS1 is one, or the T-EAS1 selected by the T-EES for the terminal application context migration completion time is lower than the preset application context migration completion time, which is not limited in this embodiment of the present application.
  • Step 2108a the T-EES sends an EAS discovery response 11 to the S-EES, and accordingly, the S-EES receives the EAS discovery response 11 from the T-EES. Among them, EAS finds the information of T-EAS1 in response 11.
  • the T-EES may also send information to the S-EES for indicating the completion time of the migration of the application context of the terminal by the T-EAS1.
  • the information used to indicate the completion time of migration of the application context of the terminal by T-EAS1 may be the time of completion of migration of the application context of the terminal by T-EAS1, which is not limited in this embodiment of the present application.
  • the information for indicating the completion time of the migration of the application context of the terminal by the T-EAS1 is carried in the EAS discovery response 11 .
  • step 2108a it may further include:
  • Step 2109a the S-EES sends a discovery response message 10 to the S-EAS. Accordingly, the S-EAS receives the EAS discovery response 10 from the S-EES. Among them, the EAS finds the information of T-EAS1 in the response 10.
  • step 2109a may be omitted.
  • the method provided by this embodiment of the present application may further include:
  • Step 2107b the T-EES sends the EAS discovery response 12 to the S-EES. Accordingly, the S-EES receives the EAS discovery response 12 from the T-EES.
  • the EAS discovery response 12 includes the completion time of migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • the EAS discovery response 12 may further include the EAS profile of each T-EAS.
  • the migration completion time of a T-EAS for the application context of the terminal may be included in the EAS profile of the T-EAS, or may not be included in the EAS profile.
  • the method provided by this embodiment of the present application further includes:
  • the S-EES selects a T-EAS2 serving the terminal from one or more T-EASs according to the completion time of migration of the application context of each T-EAS for the terminal.
  • this embodiment of the present application may execute any one of the following cases C and D:
  • the case C includes steps 2108b to 2109b.
  • Case D includes steps 2108c to 2109c.
  • Step 2109b the S-EES sends the EAS discovery response 13 to the S-EAS, and accordingly, the S-EAS receives the EAS discovery response 13 from the S-EES.
  • the EAS discovery response includes T-EAS2 information.
  • the EAS discovery response 13 may further include the time for completing the migration of the application context of the terminal by the T-EAS2.
  • the S-EAS can use the T-EAS2 as the EAS serving the terminal, or if the S-EAS determines that the T-EAS2 does not meet the requirements, it can restart the T-EAS2 Step 2101 above is performed.
  • Step 2108c the S-EES sends the EAS discovery response 14 to the S-EAS, and accordingly, the S-EAS receives the EAS discovery response 14 from the S-EES.
  • the EAS discovery response 14 includes the migration completion time of each T-EAS for the terminal's application context.
  • the S-EAS selects a T-EAS serving the terminal from one or more T-EASs according to the completion time of migration of the application context of each T-EAS for the terminal.
  • the second network element may be an S-EAS.
  • the first network element is a T-EES
  • the second network element may be an S-EAS or an S-EES.
  • the T-EES determines the migration completion time of each T-EAS for the terminal's application context. After that, the T-EES can select a T-EAS according to the completion time of the migration of the application context of the terminal for each T-EAS, or send the S-EES/S-EAS that the migration of the application context of each T-EAS to the terminal is completed time. For the latter, the S-EES/S-EAS selects the T-EAS according to the migration completion time of each T-EAS for the terminal's application context, thereby realizing the technical effect of selecting the T-EAS according to the migration completion time of the application context.
  • Steps 2201 to 2203 are the same as steps 2101 to 2103, and will not be repeated here.
  • the S-EES sends an EAS discovery request 14 to the T-EES.
  • the T-EES receives the EAS discovery request 14 from the S-EES.
  • the EAS discovery request 14 is used to request to provide the first related information of each T-EAS in the T-EAS that can provide services for the terminal. It is worth noting that since the S-EES does not know which T-EAS the T-EAS that can serve the terminal is, the EAS discovery request 14 is also used to request the T-EES to serve the terminal. -EAS.
  • the EAS discovery request 14 may also carry some requirement information, so that the T-EES can filter the T-EAS that satisfies the requirement information and can provide services for the terminal.
  • the EAS discovery request 14 carries the indication information 14 .
  • the indication information 14 is used to request the first related information of each T-EAS in the T-EAS that can provide services for the terminal.
  • the request message 14/indication information 14 may also not indicate the specific content of the request, but only indicate the request for the first related information.
  • Step 2205 the T-EES discovers one or more T-EASs that can provide services for the terminal.
  • Step 2206 The T-EES acquires the first related information of each T-EAS in one or more T-EASs that can provide services for the terminal.
  • step 2206 For the specific implementation of step 2206, reference may be made to the description in FIG. 11 above. Specifically, the EES in FIG. 11 may be replaced with T-EES.
  • Step 2207 the T-EES sends an EAS discovery response 14 to the S-EES. Accordingly, the S-EES receives the EAS discovery response 14 from the T-EES.
  • the EAS discovery response 14 includes the first related information of each T-EAS in one or more T-EASs that can provide services for the terminal.
  • the T-EES can provide the S-EES with load information or network status of each T-EAS. For example, if only the part of the first related information is requested in the request message, the T-EES may only return the requested part to the S-EES. For example, if the EAS discovery response 14 does not request location information, the T-EES The EES can provide the S-EES with the load information or network status of each T-EAS. For example, when the EAS discovery response 14 requests location information, network status, and load information, the T-EES can provide the S-EES with each T-EAS. - EAS location information, network status, load information.
  • Step 2208a the S-EES determines the application context of each T-EAS for the terminal according to one or more of the first related information of each T-EAS, the second related information of the S-EAS, and the size of the application context. migration completion time.
  • case E includes step 2209a and step 2210a.
  • Case F includes steps 2209b and 2210b.
  • step 2209a the S-EES selects T-EAS1 according to the completion time of the migration of the application context of the terminal for each T-EAS.
  • Step 2210a the S-EES sends an EAS discovery response 15 to the S-EAS. Accordingly, the S-EAS receives the EAS discovery response 15 from the S-EES.
  • the EAS discovery response 15 includes the information of T-EAS1.
  • the information of T-EAS1 is used to identify T-EAS1.
  • the information of the T-EAS1 may be address information, identification, and the like of the T-EAS1.
  • the S-EES may also send information to the S-EAS for indicating the completion time of the migration of the application context of the terminal by the T-EAS1.
  • the information used to indicate the completion time of the migration of the application context of the T-EAS1 to the terminal may be the completion time of the migration of the application context of the terminal by the T-EAS1, or the first related information of the T-EAS1, the first relevant information of the S-EAS One or more of two related information and the size of the application context, which is not limited in this embodiment of the present application.
  • the information used to indicate the migration completion time of the application context of the terminal by the T-EAS1 is carried in the EAS discovery response 15 to save signaling overhead between network elements.
  • step 2208a as shown in FIG. 22, the method provided by this embodiment of the present application may further include: step 2209b and step 2210b.
  • Step 2209b the S-EES sends an EAS discovery response 16 to the S-EAS. Accordingly, the S-EAS receives the EAS discovery response 16 from the S-EES.
  • the EAS discovery response 16 includes the completion time of migration of the application context of the terminal for each T-EAS in the one or more T-EASs.
  • the EAS discovery response 16 may also include the EAS profile of each T-EAS.
  • the migration completion time of a T-EAS for the application context of the terminal may be included in the EAS profile of the T-EAS, or may not be included in the EAS profile.
  • the migration completion time of the T-EASn for the application context of the terminal may be included in the EAS profile of the T-EASn.
  • the S-EAS selects T-EAS2 from one or more T-EASs according to the completion time of migration of the application context of the terminal for each T-EAS.
  • T-EAS2 and T-EAS1 can be the same T-EAS or different T-EAS.
  • steps 2209a and 2210a can be omitted, or if the S-EES performs steps 2209b and 2210b, then steps 2209a and 2210b 2210a may be omitted, which is not limited in this embodiment of the present application.
  • the method provided by this embodiment of the present application may further include: step 2208b and step 2209c.
  • the S-EES provides the S-EAS with the first related information of each T-EAS in one or more T-EASs that can provide services for the terminal.
  • Step 2209c the S-EAS determines the T-EAS1 that provides services for the terminal according to one or more of the first related information of each T-EAS, the second related information of the S-EAS, and the size of the application context.
  • step 2209c For the specific implementation of step 2209c, reference can be made to the above-mentioned T-ESS/ESS/S-EES according to one or more of the first related information of each T-EAS, the second related information of S-EAS, and the size of the application context, The T-EAS1 that provides services for the terminal is determined, and details are not repeated here.
  • each network element such as the first network element, the second network element, etc.
  • each network element includes corresponding structures and/or software modules for performing each function in order to implement the above-mentioned functions.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the first network element and the second network element may be divided into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one in the processing unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and other division methods may be used in actual implementation.
  • FIG. 23 shows the communication device involved in the above-mentioned embodiment, and the communication device may include: a communication module 2313 and a processing module 2312 .
  • the communication device may further include a storage module 2311 for storing program codes and data of the communication device.
  • the communication device is a first network element, or a chip applied in the first network element.
  • the communication module 2313 is used to support the communication device to communicate with an external network element (eg, a second network element).
  • the communication module 2313 is configured to perform the sending and receiving operations of the first network element in the foregoing method embodiments.
  • the processing module 2312 is configured to perform the processing operations of the first network element in the foregoing method embodiments.
  • the communication module 2313 is configured to perform the sending action performed by the first network element in step 602 of FIG. 6.1 in the foregoing embodiment.
  • the processing module 2312 is configured to support the communication apparatus to perform the processing actions performed by the first network element in the foregoing embodiment, such as step 601 . and other steps performed by the first network element.
  • the communication module 2313 is configured to perform the receiving action performed by the first network element in step 601-1 of FIG. 6.2 in the foregoing embodiment.
  • the processing module 2312 is configured to support the communication apparatus to perform the processing actions performed by the first network element in the foregoing embodiment, such as step 602-1 and step 603-1. and other steps performed by the first network element.
  • the communication module 2313 is configured to perform the sending action performed by the first network element in step 702 of FIG. 7 in the foregoing embodiment.
  • the processing module 2312 is configured to support the communication apparatus to perform the processing actions performed by the first network element in the foregoing embodiment, such as step 701 and step 702 . and other steps performed by the first network element.
  • the communication device is a second network element, or a chip applied in the second network element.
  • the communication module 2313 is used to support the communication device to communicate with an external network element (eg, the first network element).
  • the communication module 2313 is configured to perform the sending and receiving operations of the second network element in the foregoing method embodiments.
  • the processing module 2312 is configured to perform the processing operations of the second network element in the foregoing method embodiments. and other steps performed by the second network element.
  • the communication module 2313 is configured to perform the receiving action performed by the second network element in step 602 of FIG. 6.1 in the foregoing embodiment.
  • the processing module 2312 is configured to support the communication apparatus to perform the processing actions performed by the second network element in the foregoing embodiment, such as step 603 .
  • the communication module 2313 is configured to perform the sending action performed by the second network element in step 601-1 of FIG. 6.2 in the foregoing embodiment.
  • the processing module 2312 is configured to support the communication apparatus to perform the processing actions performed by the second network element in the foregoing embodiment, such as step 604-1.
  • the communication module 2313 is configured to perform the receiving action performed by the second network element in step 702 of FIG. 7 in the foregoing embodiment.
  • the processing module 2312 is configured to support the communication apparatus to perform the processing actions performed by the second network element in the foregoing embodiment, such as step 703 .
  • the communication module 2313 shown in FIG. 23 can also be replaced by a communication unit, and the processing module 2312 can also be replaced with reference to a processing unit.
  • the storage module 2311 can also be replaced with a storage unit.
  • the processing unit is used to control and manage the actions of the communication device, for example, the processing unit is used to execute the steps of information/data processing in the communication device.
  • the communication unit is used to support the steps of information/data transmission or reception performed by the communication device.
  • the communication unit may include a receiving unit and a sending unit, the receiving unit is used for receiving a signal, and the sending unit is used for sending a signal.
  • the processing module 2312 may be a processor or a controller, such as a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • a processor may also be a combination that performs computing functions, such as a combination comprising one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the communication module may be a transceiver, a transceiver circuit, or a communication interface.
  • the storage module may be a memory.
  • the processing module 2312 is the processor 33 or the processor 35
  • the communication module 2313 is the transceiver 33
  • the storage module 2311 is the memory 32
  • the communication device involved in the present application may be the communication device shown in FIG. 3 .
  • the above communication module may be a communication interface of the device for receiving signals from other devices.
  • the communication module is a communication interface used by the chip to receive or transmit signals from other chips or devices.
  • FIG. 24 is a schematic structural diagram of a chip 240 provided by an embodiment of the present application.
  • the chip 240 includes one or more (including two) processors 2410 and a communication interface 2430 .
  • the chip 240 further includes a memory 2440, and the memory 2440 may include read-only memory and random access memory, and provides operation instructions and data to the processor 2410.
  • a portion of memory 2440 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • memory 2440 stores the following elements, execution modules or data structures, or a subset thereof, or an extended set thereof.
  • the corresponding operation is performed by calling the operation instruction stored in the memory 2440 (the operation instruction may be stored in the operating system).
  • the processor 2410 controls the processing operations of the first network element, the second network element, the third network element, and the first application server, and the processor 2410 may also be referred to as a central processing unit (central processing unit, CPU).
  • CPU central processing unit
  • Memory 2440 may include read-only memory and random access memory, and provides instructions and data to processor 2410 .
  • a portion of memory 2440 may also include NVRAM.
  • the memory 2440, the communication interface 2430, and the memory 2440 are coupled together through the bus system 2420, wherein the bus system 2420 may include a power bus, a control bus, a status signal bus, and the like in addition to a data bus.
  • the various buses are labeled as bus system 2420 in FIG. 24 .
  • the methods disclosed in the above embodiments of the present application may be applied to the processor 2410 or implemented by the processor 2410 .
  • the processor 2410 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 2410 or an instruction in the form of software.
  • the above-mentioned processor 2410 may be a general-purpose processor, a digital signal processing (DSP), an ASIC, an off-the-shelf programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistors Logic devices, discrete hardware components.
  • DSP digital signal processing
  • FPGA field-programmable gate array
  • the methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory 2440, and the processor 2410 reads the information in the memory 2440, and completes the steps of the above method in combination with its hardware.
  • the communication interface 2430 is configured to perform the steps of receiving and sending the first network element in the embodiment shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 .
  • the processor 2410 is configured to perform the processing steps of the first network element in the embodiment shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 .
  • the communication interface 2430 is configured to perform the steps of receiving and sending the second network element in the embodiment shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 .
  • the processor 2410 is configured to perform the processing steps of the second network element in the embodiment shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 .
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium.
  • the instructions are executed, the steps performed by the first network element as shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 are implemented.
  • a computer-readable storage medium in which instructions are stored, and when the instructions are executed, the steps performed by the second network element as shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 are implemented.
  • a computer program product including instructions, the computer program product includes instructions that, when executed, implement the steps performed by the first network element as shown in FIG. 6.1 , FIG. 6.2 or FIG. 7 .
  • a computer program product including instructions, the computer program product includes instructions that, when executed, implement the steps performed by the second network element as shown in Figure 6.1, Figure 6.2 or Figure 7.
  • a chip is provided, the chip is applied in the first terminal, the chip includes at least one processor and a communication interface, the communication interface is coupled with the at least one processor, and the processor is used for running instructions, so as to realize Figure 6.1 and Figure 6.2 or the steps performed by the first network element in FIG. 7 .
  • a chip is provided, the chip is applied in the first terminal, the chip includes at least one processor and a communication interface, the communication interface is coupled with the at least one processor, and the processor is used for running instructions, so as to realize Figure 6.1 and Figure 6.2 or the steps performed by the second network element in FIG. 7 .
  • An embodiment of the present application provides a communication system, where the communication system includes: a first network element and a second network element.
  • the first terminal is used to perform the steps performed by the first network element as shown in Figure 6.1.
  • the second network element is used to perform the steps performed by the second network element in Figure 6.1.
  • An embodiment of the present application provides a communication system, where the communication system includes: a first network element and a second network element.
  • the first terminal is used to perform the steps performed by the first network element as shown in Figure 6.2.
  • the second network element is used to perform the steps performed by the second network element in Figure 6.2.
  • An embodiment of the present application provides a communication system, where the communication system includes: a first network element and a second network element.
  • the first terminal is configured to perform the steps performed by the first network element as shown in FIG. 7 .
  • the second network element is configured to perform the steps performed by the second network element in FIG. 7 .
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer programs or instructions.
  • the processes or functions described in the embodiments of the present application are executed in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus.
  • the computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website site, computer, A server or data center transmits by wire or wireless to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, data center, or the like that integrates one or more available media.
  • the usable media may be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as digital video discs (DVD); and semiconductor media, such as solid state drives (SSD).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Telephonic Communication Services (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

La présente demande se rapporte au domaine technique des communications, et concerne un procédé, un appareil et un système de communication. Selon le procédé, lorsqu'un serveur d'applications cible est sélectionné pour un terminal, le temps de fin de migration d'un contexte d'application du terminal pour chaque premier serveur d'applications est désigné, de telle sorte que le serveur d'applications cible sélectionné puisse mieux fournir un service au terminal. La solution consiste : à obtenir, par un premier élément de réseau, le temps de fin de migration d'un contexte d'application d'un terminal pour chaque premier serveur d'applications parmi un ou plusieurs premiers serveurs d'applications associés au premier élément de réseau, le contexte d'application étant des informations concernant une première application du terminal pour un second serveur d'applications, le second serveur d'applications étant un serveur qui fournit actuellement un service au terminal; à envoyer, par le premier élément de réseau, à un second élément de réseau, le temps de fin de migration du contexte d'application du terminal pour chaque premier serveur d'applications, le temps de fin de migration du contexte d'application servant à déterminer un serveur d'applications cible qui fournit un service au terminal parmi les premiers serveurs d'applications.
PCT/CN2022/083140 2021-04-02 2022-03-25 Procédé, appareil et système de communication WO2022206617A1 (fr)

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