CN112187495B - Communication method and communication system for terminal and server - Google Patents

Communication method and communication system for terminal and server Download PDF

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Publication number
CN112187495B
CN112187495B CN201910586806.6A CN201910586806A CN112187495B CN 112187495 B CN112187495 B CN 112187495B CN 201910586806 A CN201910586806 A CN 201910586806A CN 112187495 B CN112187495 B CN 112187495B
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edge
server
application
enabling
user equipment
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CN112187495A (en
Inventor
于小博
白常明
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Alibaba Group Holding Ltd
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Alibaba Group Holding Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • H04L41/0816—Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
    • 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
    • H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
    • 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
    • H04L67/14—Session management
    • 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
    • H04L67/14—Session management
    • H04L67/146—Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
    • 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
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data

Abstract

The invention discloses a communication method and a communication system of a terminal and a server. Wherein the method comprises the following steps: the edge configuration server receives a first request message sent by a first edge enabling server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge enabling server by user equipment to a second edge application provided by a second edge enabling server, and the first request message comprises context information corresponding to the first edge application of the user equipment; the edge configuration server determines the second edge enabling server from an edge enabling server list; the edge configuration server sends context information of the first edge application to the second edge enabling server, and sends handover configuration information of the first edge application to the user equipment, wherein the context information of the first edge application is used for updating the context information of the second edge application corresponding to the user equipment.

Description

Communication method and communication system for terminal and server
Technical Field
The present invention relates to the field of communications, and in particular, to a method and a system for communicating between a terminal and a server.
Background
Edge computing is an evolution of cloud computing, which differs from centralized data centers in that it deploys decentralized data centers at the edges of the network, making the data processing logic closer to the consumer. Edge computing is considered one of the important means to meet key performance indicators (Key Performance Indicator, KPIs) in 5G (5 th-generation, abbreviated as 5G) network requirements, especially in terms of low latency and broadband efficiency. Edge computation in telecommunications networks not only becomes a facilitator of meeting 5G performance metrics, it also plays an important role in the transformation of telecommunications traffic, which is being transformed into a multi-functional service platform for industry and other specific customer groups. Edge computing supports this translation because it opens up network edges for applications and services, including applications and services from third parties.
When using an edge application, a User Equipment (UE) may involve an edge computing server or a handover scenario of the edge application if the UE is in a mobile process, but a corresponding solution is not provided in the related art.
Disclosure of Invention
The embodiment of the invention provides a communication method and a communication system of a terminal and a server, which are used for at least solving the technical problem that no corresponding switching scheme of edge application exists when user equipment is moving in the related technology.
According to an aspect of an embodiment of the present invention, there is provided a communication method between a terminal and a server, including: an Edge configuration server (Edge configuration server) receives a first request message sent by a first Edge enabled server (Edge enabler server), where the first request message is used to request switching of a first Edge application (Edge application) provided by the first Edge enabled server by a user equipment to a second Edge application provided by a second Edge enabled server, and the first request message includes context information corresponding to the first Edge application of the user equipment; the edge configuration server determines the second edge enabling server from an edge enabling server list; the edge configuration server sends context information of the first edge application to the second edge enabling server and sends switching configuration information of the first edge application to the user equipment, wherein the switching configuration information of the first edge application is used for providing configuration information for switching the user equipment from the first edge application to the second edge application, and the context information of the first edge application corresponding to the user equipment is used for updating the context information of the second edge application corresponding to the user equipment.
According to another aspect of the embodiment of the present application, there is provided a communication method between a terminal and a server, including: the first edge enabling server detects a trigger event; the first edge enabling server sends a first request message to an edge configuration server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge enabling server to a second edge application provided by the second edge enabling server, and the first request message comprises context information of the first edge application.
According to still another aspect of the embodiment of the present application, there is provided a communication method between a terminal and a server, including: the user equipment sends a second request message to the edge configuration server, wherein the second request message is used for requesting switching configuration information of a second edge application provided by the second edge enabling server; the user equipment receives the switching configuration information; the user equipment switches from a first edge application on a first edge-enabled server to the second edge application based on the switching configuration information.
According to still another aspect of the embodiments of the present application, there is provided a communication apparatus for a terminal and a server, the communication apparatus being applied to an edge configuration server, the communication apparatus including: a receiving module, configured to receive a first request message sent by a first edge enabling server, where the first request message is used to request switching of a first edge application provided by the first edge enabling server by a user equipment to a second edge application provided by a second edge enabling server, and the first request message includes context information corresponding to the first edge application of the user equipment; a determining module, configured to determine the second edge enabled server from the edge enabled server list; a sending module, configured to send context information of the first edge application to the second edge enabled server, and send handover configuration information of the first edge application to the user equipment, where the handover configuration information of the first edge application is used to provide configuration information for the user equipment to switch from the first edge application to the second edge application, and the context information of the first edge application corresponding to the user equipment is used to update the context information of the second edge application corresponding to the user equipment.
According to still another aspect of an embodiment of the present application, there is provided a communication system including: the system comprises an edge configuration server, a first edge enabling server, a second edge enabling server and user equipment; the edge configuration server is configured to receive a first request message sent by the first edge enabling server, where the first request message is used to request switching of the user equipment from a first edge application to a second edge application provided by a second edge enabling server, and the first request message includes context information corresponding to the first edge application of the user equipment; determining the second edge enabled server from a list of edge enabled servers; sending context information of the first edge application to the second edge enabled server; the first edge enabling server is used for providing the first edge application; the second edge enabling server is used for providing the second edge application; receiving the context information of the first edge application sent by the edge configuration server; the user equipment is used for receiving the switching configuration information of the first edge application sent by the edge configuration server; switching from the first edge application to a second edge application according to the switching configuration information of the first edge application, and updating the context information of the second edge application according to the context information of the first edge application.
According to still another aspect of the embodiment of the present application, there is provided a communication method between a terminal and a server, including: the edge configuration server acquires the context information of the first edge application provided by the user equipment, wherein the first edge application is provided by a first edge enabling server; the edge configuration server sends the context information of the first edge application to a second edge enabling server so as to update the context information of the second edge application according to the context information of the first edge application when the user equipment is switched to the second edge application.
In the embodiment of the application, the configuration is carried out by adopting the switching process of the edge application of the user equipment through the edge configuration server (the first edge application provided by the first enabling server is switched to the second edge application provided by the second edge enabling server), specifically, the context information for updating the second edge application is sent to the second edge enabling server, and the switching configuration information for providing the configuration information for the switching process of the edge application is sent to the user equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1a is a schematic diagram of the overall architecture of an edge computing system according to an embodiment of the present application;
FIG. 1b is a block diagram of a mobile edge computing system in combination with a 5G core network in accordance with an embodiment of the present application;
fig. 2a is a schematic structural diagram of a communication system according to an embodiment of the present application;
FIG. 2b is a schematic diagram of an alternative communication system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an interaction flow of various devices in an alternative communication system in accordance with an embodiment of the present application;
fig. 4 is a flowchart of a communication method between a terminal and a server according to embodiment 2 of the present application;
fig. 5 is a flowchart of another communication method between a terminal and a server according to embodiment 3 of the present application;
fig. 6 is a flowchart of another communication method between a terminal and a server according to embodiment 4 of the present application;
fig. 7 is a block diagram showing a communication apparatus between a terminal and a server according to embodiment 4 of the present application;
Fig. 8 is a flowchart of another communication method between a terminal and a server according to embodiment 6 of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, partial terms or terminology appearing in the course of describing embodiments of the application are applicable to the following explanation:
edge configuration server: may also be referred to as an edge data network configuration server (Edge Data Network Configuration Server). The edge data network configuration server provides the support functions required by a User Equipment (UE) to connect to an edge enablement program server in the edge data network. The edge configuration server may also be referred to as an edge service configuration server. The edge configuration server may be provided by a third party vendor. Likewise, the edge configuration server may also be provided by the operator. The third party vendor herein refers to a service provider other than an operator.
The edge data network configuration server functions to provide edge data network configuration information to edge enabled clients in the UE. The edge data network configuration information includes the following:
1) The UE connects to information required for the edge data network by means of its service area information.
2) Information to establish a connection with an edge-enabled server (e.g., URI) in an edge data network.
Edge enabled server: the edge-enabled server provides the support functions required for the edge application to run in the edge data network.
The functions of the edge enabled program server are: 1) Providing configuration information to exchange application data traffic with an edge application; and (2) providing information related to the edge application, such as availability, to the edge enabled client.
Edge-enabled clients: the edge enabled client provides the support functions required to run the application client in the UE.
The edge-enabled client functions: 1) Retrieving and providing configuration information to exchange application data traffic with the edge application; and 2) discovering edge applications available in the edge data network.
Context information of the edge application: the context information of the edge application refers to the running state or progress of the edge application before the switch, for example, the context information of the edge application may include, but is not limited to, the playing position of the video, and the like. In addition, the context information may include an application key (Appkey) for enabling two-way authentication or message transfer encryption between the UE and the edge-enabled server or the edge application. The context information may also include sequence number information of a data packet or data frame transmitted by the edge application to the UE. Similarly, the sequence number information of the data packet or the data frame sent by the UE to the edge application may be also used. In addition, the context information of the edge application may also be geographical location information of the UE, edge identification of the UE, etc. The edge identifier of the UE may be an identifier of the UE for the edge enabling server or an identifier of the UE for the edge application, which is not specifically limited in the present invention.
Example 1
According to an embodiment of the present invention, an edge computing system is provided, as shown in fig. 1a, which illustrates an overall architecture of edge computing, where an underlying network communication portion of the edge computing may use a 3GPP network, a local area network, or other external network. While the middle platform part includes a Mobile edge host (Mobile edge host), and a Mobile edge host management function (Mobile edge host level management). The Mobile edge host includes a Mobile edge platform (Mobile edge platform), a virtualization architecture (e.g., NFVI), and a Mobile edge application (Mobile edge App) for the Mobile edge platform.
As shown in fig. 1b, an architecture diagram of a mobile edge computing system after being combined with a 5G core network is shown. The host portion of the mobile edge computing system serves as the Data Network (DN) in the 5G core Network. While the instantiated MEC coordinator acts as the AF part in 5G.
The AF may send a request to the SMF (session management function) via PCF (policy function) or NEF (network opening function) to affect UPF (user plane function) (re-) selection and session routing.
The correspondence between the entities in fig. 1a and 1b and the related entities in fig. 2a is:
in fig. 1a, the mobile edge host layer management (Mobile edge host level management) represents an edge-enabled server. The Mobile edge application (Mobile edge app) therein represents an edge application. The edge configuration server provides the functionality of part of the mobile edge system layer management (Mobile edge system level management).
In fig. 1b, the UE first obtains the IP address and path to the Mobile edge host (SMF) through registration and PDU session establishment procedures, the path being provided by the session management function (Session Management Function, SMF). The mobile edge host is the edge-enabled server. The UE then connects to an edge application on an edge-enabled server via a path provided by an access network (RAN) and UPF.
In fig. 2a, the user equipment may connect to the corresponding edge enabled server through the base station and different UPFs. For example, the UE may connect to the first edge-enabled server through UPF 1. The UE may also connect to the second edge enabled server through UPF 2. In addition, there is also an interface between the UE and the edge configuration server. The UE may obtain configuration information of both edge-enabled servers from the edge configuration server. The edge configuration server may connect to more edge enabled servers. The figures are only examples of the first edge-enabled server and the second edge server. The edge configuration server may obtain configuration information of the edge enabled server through an interface with the two edge enabled servers. And the edge enabled server may be maintained by configuration information.
The embodiment of the application also provides a communication system, as shown in fig. 2a, which comprises:
an edge configuration server 20, a first edge enabled server 22, a second edge enabled server 24, and a user device 26; wherein,
an edge configuration server 20, configured to receive a first request message sent by a first edge enabling server, where the first request message is used to request switching of the user equipment from the first edge application to a second edge application provided by a second edge enabling server, and the first request message includes context information corresponding to the first edge application of the user equipment; determining a second edge enabled server from the list of edge enabled servers; sending context information of the first edge application to a second edge enabled server; optionally, the first request message includes at least one of the following: request cause, state information of edge application, and location information of user equipment. Among the reasons for the request include, but are not limited to: the location of the user equipment changes.
A first edge-enabled server 22 for providing a first edge application;
a second edge-enabled server 24 for providing a second edge application; receiving the context information of the first edge application sent by the edge configuration server;
User equipment 26, configured to receive switching configuration information of an edge application sent by an edge configuration server; and switching from the first edge application to the second edge application according to the switching configuration information of the edge application, and updating the context information of the second edge application according to the context information of the first edge application.
Wherein the second edge application may be determined based on, but not limited to, the following: the edge server receives a third request message for enabling the specified edge, wherein the third request message carries the identification of the specified edge enabling server and the identification of all edge applications on the specified edge enabling server, and the specified edge enabling server at least comprises a second edge enabling server; the edge configuration server stores the identification of the appointed edge enabling server and the identification of all edge applications on the appointed edge enabling server into an edge enabling server list and an edge application list respectively. The third request message includes, but is not limited to, an edge application registration request message, or an edge-enabled server registration request message.
In some optional embodiments of the present application, the edge configuration server maintains an edge enable server list and a corresponding edge application list of each edge server, and when the user equipment needs to switch the edge applications on different edge servers, the edge configuration server may search the corresponding enable server from the list and the edge application provided by the enable server.
There are various ways for the edge configuration server to obtain the edge enabled server list, for example, the edge enabled server list is obtained through a registration process of the edge enabled server, specifically:
the edge configuration server receives an edge application registration request (Edge application Registration) message of the edge enabling server, wherein the third request message carries an identifier of the edge enabling server, and identifiers of all edge applications on the edge enabling server, and the identifier of the edge enabling server comprises a server serial number, a service manufacturer serial number and the like. In this way, the edge configuration server may obtain the identifier of the edge enabled server and the identifier of the edge application on the edge enabled server from the third request message, thereby establishing an edge enabled server list and a corresponding edge application list.
In addition, in some alternative embodiments of the present application, the edge-enabled servers may communicate with each other, so that the edge-enabled servers may obtain, in addition to their own edge-enabled server identifications and edge application identifications, edge-identified server identifications of other edge-enabled servers with which communication is enabled, and edge application identifications on other edge-enabled servers. At this time, the third request message may carry, in addition to the identifier of the current edge enabling server and the corresponding edge application identifier, the identifier of the other edge enabling servers and the corresponding edge application identifiers of the current edge enabling server for communication.
Taking the identification of the first edge enabled server and the second edge enabled server and the related edge application as examples:
step 1, a first edge enabling server sends an edge application registration request to an edge configuration server, wherein the edge application registration request carries the identification of the first edge enabling server and the identification of all edge applications on the first edge enabling server;
step 2, the edge configuration server sends an edge application registration reply (Edge registration response) message to the first edge enabling server, wherein the edge application registration reply message carries registration state information, such as registration success, registration failure reasons, etc., and the registration failure reasons can be authentication failure, etc.;
step 3, the second edge enabling server sends an edge application registration request message to the edge configuration server, wherein the edge application registration request carries the identification of the second edge enabling server and the identification of all edge applications on the first edge enabling server;
and step 4, the edge configuration server sends an edge application registration response message to the second edge enabling server, wherein the edge application registration response message carries registration state information, such as successful registration, registration failure reasons, and the like, and the registration failure reasons can be authentication failure and the like.
It should be noted that, the first edge application and the second edge application are the same type of application, and the same type may be interpreted as that the two edge applications come from the same vendor, but are disposed on different edge-enabled servers, for example, the first edge application and the second edge application are both the same video application, for example, youtube, and the like.
The edge configuration server 20, in determining the second edge application, may be determined in a number of ways, such as: based on location information of the user device or the type of first edge application, or both, in some alternative embodiments of the application, it may be determined by: an edge configuration server acquires at least one of location information of the user equipment and a type of the first edge application; the edge configuration server determines the second edge enabling server from a locally maintained edge enabling server list according to at least one of the position information of the user equipment and the type of the first edge application; the edge configuration server determines the second edge application from the list of edge applications provided by the second edge enabling server.
For another example, the load state of the enabling server or the load state and the location information of the user equipment may be determined, and specifically, the edge configuration server obtains the load state information of all the enabling servers in the enabling server list; and determining an enabling server from the enabling server list according to the load state information, and further determining a second edge application from the edge application list corresponding to the determined enabling server.
Or firstly determining the distance between the user equipment and an enabling server to be switched according to the position information of the user equipment; and then determining a target enabling server, namely a second edge enabling server according to the distance and the load state of each enabling server, for example, selecting the enabling server with the smallest load from the enabling servers with the distance smaller than a preset threshold as the second edge enabling server. Specifically, the load state may be the number of users carried by the edge application or bandwidth resources consumed by the edge application currently serving the user, and the edge configuration server may select an edge enabling server optimal for the UE according to the load state information, for example, the edge configuration server determines the edge enabling server 2 and the edge enabling server 3 according to the user location information, if the two edge enabling servers are located closer to the UE (i.e. smaller than a preset threshold), and all have edge applications of the type required by the UE, and the edge configuration server determines that the load state of the edge enabling server 2 is greater than the load state of the edge enabling server 3, or that the load state of the corresponding edge application on the edge enabling server 2 is greater than the load state of the corresponding edge application on the edge enabling server 3, then the edge configuration server takes the edge enabling server 3 as the most preferred edge enabling server of the UE.
Optionally, each edge enabled server may also dynamically acquire and maintain a list of edge enabled servers. For example, a new edge-enabled server 3, when it is set up, will pre-configure the configuration information of the first edge-enabled server and the edge-enabled server 2 already set up. The configuration information may be a URL or IP address or an identification of an edge enabled server, etc. The identification of the edge enabled server may include edge enabled server unique identification information, edge enabled server vendor information, and the like. The edge enabled server vendor information may be several bits to represent different vendor code information, for example, the vendor a code is 001, the vendor B code is 010, etc. Optionally, the identification of the edge enabled server may further include one or more of verification information, geographic location information. The geographic location information may represent the geographic location where the edge enabled server is located by a number of bits, e.g., 001 represents Beijing, 002 represents Shanghai. For another example, the geographic location information may represent different levels of information, such as 00101 representing the Beijing east urban area, 00102 representing the Beijing west urban area, and so on. The bits may be specific bits according to the requirements, and the present invention is not particularly limited. Similarly, the identification of the edge application may also include edge application unique identifier information, edge application service provider information, verification information, and the like. Wherein the edge enabled server vendor information may be represented by several bits for different service provider code information, e.g., 001 for service provider a, 010 for service provider B, etc.
Further, each edge enabled server may also obtain a list of edge applications on additional edge enabled servers. For example, the first edge enabling server may periodically acquire edge application information of the edge computing enabling server 2 by sending a subscription request, and the edge application information may include an identification of the edge application and address information, which may be a URL or an IP address, or the like. Alternatively, the edge computing enabling server 2 may also actively send its updated edge application information to the first edge enabling server via a notification message.
Specifically, the first edge enabled server may obtain the switching configuration information of the edge enabled server to be switched according to the UE may obtain the switching configuration information of the edge enabled server to be switched according to the connected edge enabled server, without obtaining the switching configuration information of the edge enabled server to be switched through the edge configured server. For example, the UE first connects to a first edge application of a first edge enabled server. Along with the change of the position of the UE, the first edge enabling server judges that the UE should be switched to a new edge enabling server, and finds an edge enabling server nearest to the UE according to the list of the edge enabling servers and the position information of the UE. And sending a switching request message to the UE, wherein the switching request message comprises the identification of the edge enabling server 2 to be switched, address information and the identification of the corresponding second edge application on the edge enabling server. The address information may be one or more of a URL, an IP address, or the like.
It should be noted that, when determining the second edge application, it is necessary to ensure that the second edge application and the first edge application are the same type.
In other embodiments of the present application, the context information of the first edge application includes, but is not limited to, a running state or a running process of the first edge application before the handover, so that after the user equipment is handed over to the second edge application, the seamless handover may be achieved based on transferring the context information to the second edge application. For example, when the first edge application and the second edge application are video applications, the context information of the first edge application may include, but is not limited to, a playback position of the video, and the like. In addition, the context information may include application keys for enabling two-way authentication or message transfer encryption between the UE and the edge enabled server or the edge application. The context information may also include sequence number information of a data packet or data frame transmitted by the edge application to the UE. Similarly, the sequence number information of the data packet or the data frame sent by the UE to the edge application may be also used.
The edge configuration server 20 may actively transmit (e.g., periodically transmit) or passively transmit (e.g., transmit based on a request of the user equipment) the handover configuration information of the edge application to the user equipment, and the latter may take the following forms, but is not limited thereto: receiving a second request message (e.g., a route change request message) from the user equipment, the second request message being for requesting acquisition of handover configuration information of the second edge application; and then sending a response message of the second request message to the user equipment, wherein the response message comprises the switching configuration information of the second edge application.
In some embodiments of the present application, the handover configuration information includes, but is not limited to: the identification of the second edge enabled server and the identification of the second edge application provided by the second edge enabled server. Optionally, the handover configuration information may also include at least one of an identification of the second edge-enabled server and an identification of the second edge application.
For better understanding, the interaction flow of each device in the above communication system is described in detail below with reference to the example of fig. 3, and as shown in fig. 3, the interaction flow of each device is as follows:
step S302, a first edge enabling server sends an edge application registration request message to an edge configuration server, wherein the edge application registration request carries identification of the first edge enabling server and identification of all edge applications on the first edge enabling server, and the identification of the edge enabling server comprises a server serial number, a service manufacturer serial number and the like;
step S304, the edge configuration server sends an edge application registration response message to the first edge enabling server, wherein the edge application registration response message carries registration state information, such as successful registration, or registration failure reasons, such as authentication failure;
Step S306, the first edge enabling server sends a notification message of update information to the edge configuration server; it should be noted that this step is optional, that is, step S308 is directly performed without performing step S306;
specifically, when an edge application on the edge-enabled server changes, such as an addition or deletion of an edge application, or when configuration information of the edge-enabled server changes, such as a geographic location or an identification of the edge-enabled server changes, the edge-enabled server triggers sending a notification message to the edge-enabled server, where the notification message may include one or more of geographic location information, edge-enabled server identification information, and identification information of at least one edge application.
Step S308, the second edge enabling server sends an edge application registration request message to the edge configuration server, wherein the edge application registration request carries the identification of the second edge enabling server and the identification of all edge applications on the first edge enabling server;
step S310, the edge configuration server sends an edge application registration response message to the second edge enabling server, where the edge application registration response message carries registration status information, such as successful registration, or registration failure reasons, which may be authentication failure, etc.;
Step S312, the edge data network configuration service maintains an edge enabled server list and an edge application list of each enabled server, wherein the edge enabled server list comprises identifications of all edge enabled servers, and the edge application list of each edge enabled server comprises all edge application identifications of the edge enabled server;
step S314, the UE is connected to the edge computing application 1 on the first edge enabling server through the 5G core network;
step S316, the first edge enabling server monitors event triggering, wherein the event can be that the position information of the UE changes;
step S318, the edge enabled server sends a context transfer request message to the edge configuration server, where the context transfer request message includes a request reason, edge computing application context information (including an application layer key between the UE and the edge computing application 1), UE ID or UE location information, etc.;
step S320, the edge configuration server sends a context transfer response message to the edge enabling server, wherein the response message comprises indication information for indicating whether to allow the context transfer;
step S322, the Edge configuration server obtains the location information of the UE, and confirms the most preferred second Edge enabled server according to the location information of the UE and the Edge computing application type, and sends a context transfer request message to the second Edge enabled server, the context transfer request message including the request reason, the Edge computing application context information (including the application layer key between the UE and the Edge computing application 1), the UE ID or the UE location information (or the UE Edge identification UE Edge ID), and so on;
In some alternative embodiments of the present application, the edge configuration server may obtain the above location information by: receiving location information actively reported by a UE, for example, the UE may send the location information of the UE in a broadcast manner, where the location information includes, but is not limited to: longitude and latitude coordinates, and the like. In other alternative embodiments of the present application, the above-described location information may also be obtained by:
in the session establishment process, the UE sends a protocol data unit (Protocol Data Unit, PDU) session establishment request to the access and mobility management function (Access and Mobile Management Function, AMF), and at the same time, the base station of the access network reports the UE location information to the AMF, and the edge enabling server can request the 5G core network to acquire the UE location information by using the network opening function (Network Exposure Function, NEF). There are various methods for acquiring the position information. For example, the edge-enabled server may obtain location information of the UE in a "request-reply" manner. The edge enabling server may also request the 5G core network to subscribe to the location information of the UE, and the subscription policy may be to acquire the location information of the UE once every fixed time interval. The 5G core network may also send the location information of the UE to the edge enabled server by sending a notification message.
Step S324, the second edge enabling server sends a context transfer response message to the edge configuration server, wherein the response message comprises state information of whether the context transfer is successful or not;
step S326, the first edge enabling server sends a context transfer confirmation message to the edge configuration server; this step is optional, i.e. step S328 is directly performed without performing step S326;
step S328, the first edge enabling server sends a dynamic information notification message to the UE, the dynamic information notification message indicates the UE to request to query the edge data network server for the edge enabling server to be switched;
step S330, the UE sends an edge application route change request message to an edge configuration server;
step S332, the edge configuration server sends an edge application route change response message to the UE, wherein the response message comprises the identifier of the second edge enabling server and the identifier of the edge application on the second edge enabling server;
in step S334, the UE connects to the second edge application on the second edge enabled server according to the identification.
The following describes the handover procedure in the next specific application scenario in connection with the embodiment shown in fig. 2 b:
the vehicle is first connected to the edge enabled server 1 via a 5G access network and a core network. Thereafter, as the vehicle moves, the edge enabling server 1 cannot provide a low-delay reliable service to the vehicle due to the relationship of the position distance. Therefore, the edge enabling server initiates the switching, so that the terminal can be switched to a new optimal edge configuration server which can meet the service requirement through the assistance of the edge configuration server.
It should be noted that, the edge configuration server may be a server separate from the edge enabling servers, or may be disposed as a configuration module in the edge enabling servers, that is, each edge enabling server has a configuration module therein, and the edge enabling servers may communicate end-to-end. The edge enabled server may be a server-side program.
The configuration of the switching process of the user equipment edge application is realized based on the scheme, so that the switching of the user equipment edge application can be realized, and the technical problem of no corresponding switching scheme of the edge application when the user equipment is moving in the related technology is solved
Example 2
Based on the system shown in fig. 2, the present application also provides a method embodiment of a method for communication between a terminal and a server, and it should be noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that shown or described herein.
Fig. 4 is a flowchart of a communication method between a terminal and a server according to an embodiment of the present application. As shown in fig. 4, the method includes:
Step S402, the edge configuration server receives a first request message sent by a first edge enabling server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge enabling server by user equipment to a second edge application provided by a second edge enabling server, and the first request message comprises context information corresponding to the first edge application of the user equipment;
step S404, the edge configuration server determines a second edge enabling server from the list of edge enabling servers;
in step S406, the edge configuration server transmits context information of the first edge application to the second edge-enabled server, and transmits handover configuration information of the edge application to the user equipment,
the switching configuration information of the edge application is used for providing configuration information for switching the user equipment from the first edge application to the second edge application, and the context information of the first edge application corresponding to the user equipment is used for updating the context information of the second edge application corresponding to the user equipment.
Alternatively, step S404 may be implemented by: the edge configuration server acquires at least one of position information of the user equipment and a type of the first edge application; the edge configuration server determines a second edge enabling server from a locally maintained edge enabling server list according to at least one of the position information of the user equipment and the type of the first edge application; the edge configuration server determines a second edge application from the edge application list provided by the second edge enabling server; and determining the switching configuration information corresponding to the second edge application.
The edge configuration server determines an edge enabling server with the shortest distance to the position information of the user equipment from an edge enabling server list to obtain a second edge enabling server; and determining a second edge application from the edge application list of the second edge enabled server, the second edge application being the same type of application as the first edge application.
In some embodiments of the present application, before the edge configuration server obtains at least one of the location information of the user equipment and the type of the first edge application, the edge configuration server sends a response message of the first request message to the edge enabling server, where the response message includes: indication information for indicating whether or not the first edge application is allowed to switch to the second edge application.
In addition, before the edge configuration server sends the switching configuration information of the edge application to the user equipment, the edge configuration server may further receive a second request message from the user equipment, where the second request message is used to request to obtain the switching configuration information of the second edge application; the edge configuration server sends a response message of the second request message to the user equipment, wherein the response message comprises switching configuration information of the second edge application.
In some embodiments of the present application, the switching configuration information of the edge application includes: the identification of the second edge enabled server and the identification of the second edge application provided by the second edge enabled server.
The first request message includes at least one of the following: request cause, state information of edge application, and location information of user equipment.
It should be noted that, the preferred implementation manner of the embodiment of the present application may be referred to the related description in embodiment 1, and will not be repeated here.
Example 3
Fig. 5 is a flowchart of another communication method between a terminal and a server according to embodiment 3 of the present application. As shown in fig. 5, the method includes:
in step S502, the first edge-enabled server detects a trigger event, where the trigger event includes, but is not limited to: the location information of the user equipment changes.
In step S504, the first edge enabling server sends a first request message to the edge configuration server, where the first request message is used to request switching of a first edge application provided by the first edge enabling server by the user equipment to a second edge application provided by the second edge enabling server, and the first request message includes context information of the first edge application.
It should be noted that, the preferred implementation manner of the embodiment of the present application may be referred to the related description in embodiment 1, and will not be repeated here.
Example 4
Fig. 6 is a flowchart of another communication method between a terminal and a server according to embodiment 4 of the present application. As shown in fig. 6, the method includes:
step S602, the user equipment sends a second request message to the edge configuration server, where the second request message is used to request the switching configuration information of the second edge application provided by the second edge enabling server;
step S604, the user equipment receives switching configuration information;
in step S606, the user equipment switches from the first edge application to the second edge application on the first edge enabled server based on the switching configuration information.
It should be noted that, the preferred implementation manner of the embodiment of the present application may be referred to the related description in embodiment 1, and will not be repeated here.
Example 5
Fig. 7 is a block diagram showing a communication apparatus between a terminal and a server according to embodiment 4 of the present application. The device is applied to an edge configuration server and is used for realizing the method shown in fig. 4, and as shown in fig. 7, the communication device comprises:
a receiving module 70, configured to receive a first request message sent by a first edge enabled server, where the first request message is used to request switching of a first edge application provided by the first edge enabled server by a user equipment to a second edge application provided by a second edge enabled server, and the first request message includes context information corresponding to the first edge application of the user equipment;
A determining module 72 for determining a second edge enabled server from the list of edge enabled servers;
a sending module 74, configured to send context information of the first edge application to the second edge enabled server, and send handover configuration information of the edge application to the user equipment, where the handover configuration information of the edge application is used to provide configuration information for the user equipment to handover from the first edge application to the second edge application, and the context information of the first edge application corresponding to the user equipment is used to update the context information of the second edge application corresponding to the user equipment.
It should be noted that, the preferred implementation manner of the embodiment of the present application may be referred to the related description in embodiment 1, and will not be repeated here.
Example 6
Fig. 8 is a flowchart of another communication method between a terminal and a server according to embodiment 6 of the present application, as shown in fig. 8, the method includes steps S802 to S804:
step S802, an edge configuration server acquires context information of a first edge application provided by user equipment, wherein the first edge application is provided by a first edge enabling server;
specifically: the edge configuration server receives a first request message sent by the first edge enabling server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge enabling server by the user equipment to a second edge application provided by the second edge enabling server, and the first request message comprises context information corresponding to the first edge application of the user equipment.
In step S804, the edge configuration server sends the context information of the first edge application to the second edge enabling server, so as to update the context information of the second edge application according to the context information of the first edge application when the user equipment is switched to the second edge application.
In some embodiments of the present application, when step S804 is performed, handover configuration information of the edge application may also be sent to the user equipment, where the handover configuration information of the edge application is used to provide configuration information for the user equipment to switch from the first edge application to the second edge application, for example, an identifier of the enabling server, and an identifier of the edge application.
In some embodiments of the present application, the edge configuration server obtains at least one of location information of the user device and a type of the first edge application; the edge configuration server determines a second edge enabling server from the edge enabling server list according to at least one of the position information of the user equipment and the type of the first edge application; the edge configuration server determines a second edge application from the edge application list provided by the second edge enabling server; and determining the switching configuration information corresponding to the second edge application. It should be noted that, the above-mentioned edge enabled server list may be an edge enabled server list maintained by an edge configuration server.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program for instructing a terminal device to execute in association with hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, such as the division of the units, is merely a logical function division, and may be implemented in another manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (13)

1. A method for communication between a terminal and a server, comprising:
the edge configuration server receives a first request message sent by a first edge enabling server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge enabling server by user equipment to a second edge application provided by a second edge enabling server, and the first request message comprises context information corresponding to the first edge application of the user equipment;
the edge configuration server determines the second edge enabling server from an edge enabling server list, wherein the distance between the user equipment and the enabling server to be switched is determined according to the position information of the user equipment, and the second edge enabling server is determined according to the distance and the load state of each enabling server;
the edge configuration server sends context information of the first edge application to the second edge enabled server, and sends handover configuration information of the edge application to the user equipment,
The switching configuration information of the edge application is used for providing configuration information for switching the user equipment from the first edge application to a second edge application, and the context information of the first edge application corresponding to the user equipment is used for updating the context information of the second edge application corresponding to the user equipment;
the manner in which the edge configuration server obtains the edge enabled server list includes: the edge configuration server receives a third request message sent by the edge enabling server, wherein the edge enabling server can acquire the edge enabling server identification and the edge application identification of the edge enabling server, can acquire the edge enabling server identification of other edge enabling servers supporting communication with the edge enabling server and the edge application identification on the other edge enabling servers, and can carry the identification of the other edge enabling servers and the corresponding edge application identifications of the current edge enabling server besides the identification of the current edge enabling server and the corresponding edge application identification.
2. The method of claim 1, wherein before the edge configuration server sends the context information of the first edge application to the second edge enabled server, the method further comprises:
The edge configuration server obtains at least one of location information of the user equipment and a type of the first edge application;
the edge configuration server determines the second edge enabling server from an edge enabling server list according to at least one of the position information of the user equipment and the type of the first edge application;
the edge configuration server determines the second edge application from a list of edge applications provided by the second edge enabling server.
3. The method of claim 2, wherein the edge configuration server determining the second edge enabled server from an edge enabled server list based on at least one of location information of the user device and a type of the first edge application, comprises:
the edge configuration server determines an edge enabling server with the shortest distance to the position information of the user equipment from the edge enabling server list to obtain the second edge enabling server; and
and determining a second edge application from an edge application list of the second edge enabling server, wherein the second edge application and the first edge application are the same type of application.
4. The method of claim 2, wherein before the edge configuration server obtains at least one of location information of the user device and a type of the first edge application, the method further comprises:
the edge configuration server sends a response message of the first request message to the edge enabling server.
5. The method of claim 1, wherein before the edge configuration server sends the handover configuration information of the edge application to the user device, the method further comprises:
the edge configuration server receives a second request message from the user equipment, wherein the second request message is used for requesting to acquire the switching configuration information of the edge application;
and the edge configuration server sends a response message of the second request message to the user equipment, wherein the response message comprises switching configuration information of the edge application.
6. The method of claim 1, wherein the switching configuration information of the edge application comprises: the identification of the second edge enabled server and the identification of the second edge application provided by the second edge enabled server.
7. The method according to any one of claims 1 to 6, wherein the first request message comprises at least one of: request cause, state information of edge application, and location information of user equipment.
8. A method for communication between a terminal and a server, comprising:
the first edge enabling server detects a trigger event;
the first edge enabling server sends a first request message to an edge configuration server, wherein the first request message is used for requesting to switch a first edge application provided by a user device by the first edge enabling server to a second edge application provided by a second edge enabling server, the first request message comprises context information of the first edge application, the edge configuration server determines the second edge enabling server from an edge enabling server list, the distance between the user device and an enabling server to be switched is determined according to the position information of the user device, and the second edge enabling server is determined according to the distance and the load state of each enabling server; the edge configuration server sends context information of the first edge application to the second edge enabling server and sends switching configuration information of the edge application to the user equipment, wherein the switching configuration information of the edge application is used for providing configuration information for switching the user equipment from the first edge application to the second edge application, and the context information of the first edge application is used for updating the context information of the second edge application corresponding to the user equipment;
The manner in which the edge configuration server obtains the edge enabled server list includes: the edge configuration server receives a third request message sent by the edge enabling server, wherein the edge enabling server can acquire the edge enabling server identification and the edge application identification of the edge enabling server, can acquire the edge enabling server identification of other edge enabling servers supporting communication with the edge enabling server and the edge application identification on the other edge enabling servers, and can carry the identification of the other edge enabling servers and the corresponding edge application identifications of the current edge enabling server besides the identification of the current edge enabling server and the corresponding edge application identification.
9. The method of claim 8, wherein the triggering event comprises: the location information of the user equipment changes.
10. A method for communication between a terminal and a server, comprising:
the user equipment sends a second request message to an edge configuration server, wherein the second request message is used for requesting switching configuration information of edge application provided by a second edge enabling server, the edge configuration server determines the second edge enabling server from an edge enabling server list, the distance between the user equipment and an enabling server to be switched is determined according to the position information of the user equipment, and the second edge enabling server is determined according to the distance and the load state of each enabling server;
The user equipment receives switching configuration information of an edge application sent by the edge configuration server, wherein the switching configuration information of the edge application is used for providing configuration information for switching the user equipment from a first edge application to a second edge application, the edge configuration server sends context information of the first edge application to the second edge enabling server, and the context information of the first edge application is used for updating the context information of the second edge application corresponding to the user equipment;
the user equipment is switched from a first edge application on a first edge enabling server to a second edge application based on the switching configuration information of the edge application, wherein the first edge enabling server sends a first request message to the edge configuration server, the first request message is used for requesting to switch the first edge application provided by the first edge enabling server by the user equipment to the second edge application provided by the second edge enabling server, and the first request message comprises context information corresponding to the first edge application of the user equipment;
The manner in which the edge configuration server obtains the edge enabled server list includes: the edge configuration server receives a third request message sent by the edge enabling server, wherein the edge enabling server can acquire the edge enabling server identification and the edge application identification of the edge enabling server, can acquire the edge enabling server identification of other edge enabling servers supporting communication with the edge enabling server and the edge application identification on the other edge enabling servers, and can carry the identification of the other edge enabling servers and the corresponding edge application identifications of the current edge enabling server besides the identification of the current edge enabling server and the corresponding edge application identification.
11. A communication device of a terminal and a server, the communication device being applied to an edge configuration server, the communication device comprising:
a receiving module, configured to receive a first request message sent by a first edge enabling server, where the first request message is used to request switching of a first edge application provided by the first edge enabling server by a user equipment to a second edge application provided by a second edge enabling server, and the first request message includes context information corresponding to the first edge application of the user equipment;
A determining module, configured to determine the second edge enabled server from an edge enabled server list, where a distance between the user equipment and an enabled server to be switched is determined according to location information of the user equipment, and the second edge enabled server is determined according to the distance and a load state of each enabled server; the manner in which the edge configuration server obtains the edge enabled server list includes: the edge configuration server receives a third request message sent by the edge enabling server, wherein the edge enabling server can acquire an edge enabling server identifier and an edge application identifier of the edge enabling server, can acquire the edge enabling server identifier of other edge enabling servers supporting communication with the edge enabling server and the edge application identifier on the other edge enabling servers, and can carry the identifier of the other edge enabling servers and the corresponding edge application identifiers communicated with the current edge enabling server besides the identifier of the current edge enabling server and the corresponding edge application identifier;
a sending module, configured to send context information of the first edge application to the second edge enabled server, and send handover configuration information of an edge application to the user equipment, where the handover configuration information of the edge application is used to provide configuration information for the user equipment to handover from the first edge application to the second edge application, and the context information of the first edge application corresponding to the user equipment is used to update the context information of the second edge application corresponding to the user equipment.
12. A communication system, comprising: the system comprises an edge configuration server, a first edge enabling server, a second edge enabling server and user equipment; wherein,
the edge configuration server is configured to receive a first request message sent by the first edge enabling server, where the first request message is used to request the user equipment to be switched from a first edge application to a second edge application provided by a second edge enabling server, and the first request message includes context information corresponding to the first edge application of the user equipment; determining the second edge enabling server from an edge enabling server list, wherein the distance between the user equipment and an enabling server to be switched is determined according to the position information of the user equipment, and the second edge enabling server is determined according to the distance and the load state of each enabling server; sending context information of the first edge application to the second edge enabled server; the manner in which the edge configuration server obtains the edge enabled server list includes: the edge configuration server receives a third request message sent by the edge enabling server, wherein the edge enabling server can acquire an edge enabling server identifier and an edge application identifier of the edge enabling server, can acquire the edge enabling server identifier of other edge enabling servers supporting communication with the edge enabling server and the edge application identifier on the other edge enabling servers, and can carry the identifier of the other edge enabling servers and the corresponding edge application identifiers communicated with the current edge enabling server besides the identifier of the current edge enabling server and the corresponding edge application identifier;
The first edge enabling server is used for providing the first edge application;
the second edge enabling server is used for providing the second edge application; receiving the context information of the first edge application sent by the edge configuration server, and updating the context information of the second edge application according to the context information of the first edge application;
the user equipment is used for receiving the switching configuration information of the edge application sent by the edge configuration server; and switching from the first edge application to the second edge application according to the switching configuration information of the edge application.
13. A method for communication between a terminal and a server, comprising:
the method comprises the steps that an edge configuration server obtains context information of a first edge application provided by user equipment, wherein the first edge application is an edge application provided by a first edge enabling server, the edge configuration server receives a first request message sent by the first edge enabling server, the first request message is used for requesting to switch the first edge application provided by the first edge enabling server by the user equipment to a second edge application provided by a second edge enabling server, and the first request message comprises the context information corresponding to the first edge application of the user equipment;
The edge configuration server sends the context information of the first edge application to a second edge enabling server so as to update the context information of the second edge application according to the context information of the first edge application when the user equipment is switched to the second edge application, wherein the distance between the user equipment and an enabling server to be switched is determined according to the position information of the user equipment, and the second edge enabling server is determined according to the distance and the load state of each enabling server;
the edge configuration server sends switching configuration information of an edge application to the user equipment, wherein the switching configuration information of the edge application is used for providing configuration information for switching the user equipment from the first edge application to a second edge application;
the manner in which the edge configuration server obtains the edge enabled server list includes: the edge configuration server receives a third request message sent by the edge enabling server, wherein the edge enabling server can acquire the edge enabling server identification and the edge application identification of the edge enabling server, can acquire the edge enabling server identification of other edge enabling servers supporting communication with the edge enabling server and the edge application identification on the other edge enabling servers, and can carry the identification of the other edge enabling servers and the corresponding edge application identifications of the current edge enabling server besides the identification of the current edge enabling server and the corresponding edge application identification.
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