CN112187495A - Communication method and communication system of terminal and server - Google Patents
Communication method and communication system of terminal and server Download PDFInfo
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- CN112187495A CN112187495A CN201910586806.6A CN201910586806A CN112187495A CN 112187495 A CN112187495 A CN 112187495A CN 201910586806 A CN201910586806 A CN 201910586806A CN 112187495 A CN112187495 A CN 112187495A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- 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
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- 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
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- 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
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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 method comprises the steps that an edge configuration server receives a first request message sent by a first edge-enabled server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge-enabled server to a second edge application provided by a second edge-enabled server, and the first request message comprises context information of the first edge application corresponding to user equipment; the edge configuration server determines the second edge-enabled server from a list of edge-enabled servers; 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 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
Technical Field
The present invention relates to the field of communications, and in particular, to a communication method and a communication system for a terminal and a server.
Background
Edge computing is an evolutionary approach to cloud computing, which, unlike centralized data centers, deploys decentralized data centers at the edge of a network, bringing data processing logic closer to consumers. Edge computing is considered as one of the important means to meet Key Performance Indicators (KPIs) in 5G (5 th-generation, abbreviated as 5G) network requirements, especially in terms of low latency and broadband efficiency. Not only does edge computing in telecommunications networks become a driver of meeting 5G performance metrics, it also plays an important role in the transformation of telecommunications traffic, which is transforming into a multi-functional service platform for industry and other specific customer groups. Edge computing supports this translation because it opens the network edge for applications and services, including applications and services from third parties.
When a User Equipment (User Equipment, UE for short) uses an edge application, if the User Equipment is in a moving process, a handover scenario of an edge computing server or the edge application may be involved, 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 moves in the related art.
According to an aspect of the embodiments of the present invention, there is provided a method for a terminal to communicate with 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), wherein the first request message is used for requesting to switch a first Edge application (Edge application) provided by the first Edge-enabled server to a second Edge application provided by a second Edge-enabled server, and the first request message comprises context information of the first Edge application corresponding to user equipment; the edge configuration server determines the second edge-enabled server from a list of edge-enabled servers; 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 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 for updating the context information of the second edge application corresponding to the user equipment.
According to another aspect of the embodiments of the present application, there is provided a method for a terminal to communicate with a server, including: the first edge-enabled server detects a triggering 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 another aspect of the embodiments of the present application, there is provided a method for a terminal to communicate with 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 the 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 is switched from the first edge application on the first edge-enabled server to the second edge application based on the switching configuration information.
According to another aspect of the embodiments of the present application, there is provided a terminal and server communication device, which is applied in an edge configuration server, the terminal and server communication device including: a receiving module, configured to receive a first request message sent by a first edge-enabled server, where the first request message is used to request that a first edge application provided by the first edge-enabled server of a user equipment is switched to a second edge application provided by a second edge-enabled server, and the first request message includes context information of the first edge application corresponding to the user equipment; a determining module, configured to determine the second edge-enabled server from an 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 switching configuration information of the first edge application to the user equipment, where the switching 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 a 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 embodiments 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-enabled server, where the first request message is used to request that the user equipment is switched from a first edge application to a second edge application provided by a second edge-enabled server, and the first request message includes context information of the first edge application corresponding to 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-enabled server to provide the first edge application; the second edge-enabled server is used for providing the second edge application; receiving context information of the first edge application sent by the edge configuration server; the user equipment is configured to receive 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 switching configuration information of the first edge application, and updating context information of the second edge application according to context information of the first edge application.
According to another aspect of the embodiments of the present application, there is provided a method for a terminal to communicate with a server, including: 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 sends the context information of the first edge application to a second edge enabling server, so that when the user equipment is switched to the second edge application, the context information of the second edge application is updated according to the context information of the first edge application.
In the embodiment of the present invention, an edge configuration server is adopted to configure a handover process of an edge application of a user equipment (a first edge application provided by a first enabling server is handed over to a second edge application provided by a second enabling server), and specifically, context information for updating the second edge application is sent to the second edge enabling server, and handover configuration information for providing configuration information for the handover 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 invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1a is a block diagram of an overall architecture of an edge computing system according to an embodiment of the present application;
FIG. 1b is an architecture diagram of a mobile edge computing system in conjunction with a 5G core network according to 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 block diagram of an alternative communication system according to an embodiment of the present application;
fig. 3 is a schematic interaction flow diagram of various devices in an alternative communication system according to an embodiment of the present invention;
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 terminal-server communication method according to embodiment 3 of the present application;
fig. 6 is a flowchart of another terminal-server communication method according to embodiment 4 of the present application;
fig. 7 is a block diagram of a communication apparatus between a terminal and a server according to embodiment 4 of the present application;
fig. 8 is a flowchart of another terminal-server communication method according to embodiment 6 of the present application.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or 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 terms appearing in the description of the embodiments of the present application are applicable to the following explanations:
the edge configuration server: or as an Edge Data Network Configuration Server (Edge Data Network Configuration Server). An edge data network configuration server provides support functions required for a User Equipment (UE) to connect to an edge enabler server in an edge data network. An edge configuration server may also be called an edge service configuration server. The edge configuration server may be provided by a third party vendor. Similarly, the edge configuration server may be provided by the operator. A third party vendor herein refers to a service provider other than the operator.
The function of the edge data network configuration server is 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 the edge data network by means of its service area information.
2) Information to establish a connection with an edge-enabled server (e.g., a URI) in an edge data network.
Edge-enabled servers: the edge-enabled server provides support functions required by the edge application to run in the edge data network.
The functions of the edge-enabler server are as follows: 1) providing configuration information for exchanging application data traffic with the edge application; and (2) provide information related to the edge application, such as availability, to the edge-enabled client.
Edge-enabled client: the edge-enabled client provides the support functionality required to run the application client in the UE.
The edge-enabled client functions are: 1) retrieving and providing configuration information for exchanging application data traffic with the edge application; and 2) discovering available edge applications in the edge data network.
Context information of edge application: the context information of the edge application refers to a running state or process of the edge application before switching, for example, the context information of the edge application may include, but is not limited to, a playing position of a video, and the like. In addition, the context information may further include an application key (app key) for enabling bidirectional authentication or message transmission encryption between the UE and the edge-enabled server or the edge application. The context information may also include sequence number information of data packets or data frames sent by the edge application to the UE. Similarly, the sequence number information of the data packet or data frame transmitted by the UE to the edge application may also be used. Besides, the context information of the edge application may also be geographical location information of the UE, an edge identifier of the UE, and the like. The edge identifier of the UE may be a UE identifier for an edge-enabled server, or a UE identifier for an 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, and an underlying network communication part of the edge computing may use a 3GPP network, a local area network, or other external network. And the middle platform part comprises a Mobile edge host (Mobile edge host) and a Mobile edge host level management function (Mobile edge host level management). The Mobile edge host includes a Mobile edge platform (Mobile edge platform), a virtualization framework (e.g., NFVI), and a Mobile edge application (Mobile edge App) of the Mobile edge platform.
As shown in fig. 1b, which shows the architecture diagram of the mobile edge computing system after it is combined with the 5G core network. The host portion of the mobile edge computing system acts as a Data Network (DN) in a 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) through PCF (policy function) or NEF (network open function) to affect UPF (user plane function) (re) selection and session routing.
The corresponding relationships between the entities in fig. 1a and 1b and the related entities in fig. 2a are:
in FIG. 1a, Mobile edge host level management (Mobile edge host level management) represents an edge-enabled server. The Mobile edge application (Mobile edge app) represents an edge application. The edge configuration server provides a function of part of Mobile edge system level management (Mobile edge system level management).
In fig. 1b, the UE first obtains an IP address and a path to a Mobile edge host (Mobile edge host) through registration and PDU Session establishment procedures, and the path is provided by a Session Management Function (SMF). Here the mobile edge host is the edge-enabled server. The UE then connects to the edge application on the edge-enabled server via the access network (RAN) and the path provided by the UPF.
In fig. 2a, the user equipment may be connected to the corresponding edge-enabled server through the base station and different UPFs. For example, the UE may connect to a first edge-enabled server through UPF 1. The UE may also connect to the second edge-enabled server through UPF 2. In addition, an interface also exists between the UE and the edge configuration server. The UE may obtain configuration information for both edge-enabled servers from the edge configuration server. The edge configuration server may be connected to more edge-enabled servers. The figure is only exemplified by a first edge-enabled server and a second edge server. The edge configuration server may obtain configuration information of the edge-enabled server through interfaces with the two edge-enabled servers. And the edge-enabled server may be maintained by configuration information.
An embodiment of the present application further provides a communication system, as shown in fig. 2a, the communication system includes:
an edge configuration server 20, a first edge-enabled server 22, a second edge-enabled server 24, and a user device 26; wherein the content of the first and second substances,
an edge configuration server 20, configured to receive a first request message sent by a first edge-enabled server, where the first request message is used to request that a user equipment is switched from a first edge application to a second edge application provided by a second edge-enabled server, and the first request message includes context information of the first edge application corresponding to 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: a request reason, status information of the edge application, and location information of the user equipment. Among these, the request reason includes but is not limited to: the location of the user device 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 context information of a first edge application sent by an edge configuration server;
the user equipment 26 is used for receiving the switching configuration information of the edge application sent by the edge configuration server; 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.
The second edge application may be determined based on the following methods, but is not limited thereto: the edge server receives a third request message of the appointed edge enabling, wherein the third request message carries an identifier of the appointed edge enabling server and identifiers of all edge applications on the appointed edge enabling server, and the appointed edge enabling server at least comprises a second edge enabling server; and the edge configuration server stores the identifier of the specified edge enabling server and the identifiers of all the edge applications on the specified 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 a list of edge-enabled servers and a corresponding list of edge applications of each edge server, and when the user equipment needs to switch edge applications on different edge servers, the edge configuration server may search the corresponding enabled server from the list and the edge application provided by the enabled server.
For example, the edge configuration server obtains the edge-enabled server list 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-enabled server, where the third request message carries an identifier of the Edge-enabled server and identifiers of all Edge applications on the Edge-enabled server, and the identifier of the Edge-enabled server includes a server serial number, a service vendor 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 the edge-enabled server list and the corresponding edge application list.
In addition, in some optional embodiments of the present application, the edge-enabled servers may communicate with each other, so that the edge-enabled server may obtain, in addition to its own edge-enabled server identifier and edge application identifier, an edge-identified server identifier of another edge-enabled server supporting communication with the edge-enabled server and an edge application identifier on another edge-enabled server. At this time, the third request message may carry, in addition to the identifier of the current edge-enabled server and the corresponding edge application identifier, identifiers of other edge-enabled servers and corresponding edge application identifiers in communication with the current edge-enabled server.
Taking the identification of the first edge-enabled server and the second edge-enabled server and the related edge application as an example:
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 an identifier of the first edge enabling server and identifiers of all edge applications on the first edge enabling server;
step 2, the Edge configuration server sends an Edge registration reply (Edge registration response) message to the first Edge enabling server, wherein the Edge registration reply message carries registration state information, such as registration success or registration failure reasons and the like, and the registration failure reasons can be authentication failure and the like;
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 identifier of the second edge enabling server and the identifiers of all edge applications on the first edge enabling server;
and 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 registration success or 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 are from the same vendor and are only deployed on different edge-enabled servers, for example, the first edge application and the second edge application are both the same type of video application, such as Youtube, etc.
The edge configuration server 20 may determine the second edge application in a variety of ways, such as: the determination based on the location information of the user equipment or the type of the first edge application, or both, may be determined in some optional embodiments of the present application by: the edge configuration server acquires 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-enabled server from a locally maintained edge-enabled server list according to at least one of the location 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-enabled server.
For another example, the load status of the enabling server or the load status and the location information of the user equipment may also be determined, specifically, the edge configuration server obtains the load status 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, determining the distance between the user equipment and the to-be-switched enabling server 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 minimum load from the enabling servers with the distance smaller than a preset threshold value as the second edge enabling server. Specifically, the load status may be the number of users carried by the edge application or bandwidth resources consumed by the edge application currently serving the users, the edge configuration server may select an edge-enabled server optimal for the UE according to the load status information, for example, the edge configuration server determines the edge-enabled server 2 and the edge-enabled server 3 according to the user location information, if the locations of the two edge-enabled servers are relatively close to the location of the UE (i.e., less than a preset threshold) and both have the type of edge application required by the UE, the edge configuration server determines that the load status of the edge-enabled server 2 is greater than the load status of the edge-enabled server 3, or the load status of the corresponding edge application on the edge-enabled server 2 is greater than the load status of the corresponding edge application on the edge-enabled server 3, the edge configuration server takes the edge-enabling server 3 as the most preferred edge-enabling server for the UE.
Optionally, each edge-enabled server may also dynamically obtain and maintain a list of edge-enabled servers. For example, when a new edge-enabled server 3 is established, the configuration information of the first edge-enabled server and the edge-enabled server 2 that have already been established are configured in advance. The configuration information may be a URL or an IP address or an identification of the edge-enabled server, etc. The identification of the edge-enabled server may include edge-enabled server unique flag information, edge-enabled server vendor information, and the like. The edge-enabled server vendor information may be represented by several bits, such as the vendor a code being 001, the vendor B code being 010, and so on. Optionally, the identifier of the edge-enabled server may further include one or more of verification information and geographical location information. The geographical location information may represent the geographical location where the edge-enabled server is located by several bits, e.g., 001 for beijing and 002 for shanghai. For another example, the geographical location information may represent information of different levels, for example, 00101 represents a tokyo region, 00102 represents a beijing western region, and the like. The number of bits can be determined according to the requirement, and the invention is not limited in particular. Similarly, the identifier of the edge application may also include edge application unique identifier information, edge application service provider information, and verification information. The edge-enabled server vendor information may represent different service provider code information by several bits, for example, the code of service provider a is 001, the code of service provider B is 010, and the like.
Further, each edge-enabled server may also obtain a list of edge applications on other edge-enabled servers. For example, the first edge-enabled server may periodically obtain the edge application information of the edge-computation-enabled server 2 by sending a subscription request, the edge application information may include an identifier of the edge application and address information, and the address information may be a URL or an IP address. Alternatively, the edge calculation enabling server 2 may also actively send its updated edge application information to the first edge enabling server through a notification message.
Specifically, the first edge-enabled server may obtain the handover configuration information of the edge-enabled server to be handed over according to the connected edge-enabled server, without obtaining the handover configuration information of the edge-enabled server to be handed over through the edge-enabled server. For example, the UE first connects to a first edge application of a first edge-enabled server. And the first edge enabling server judges that the UE should be switched to a new edge enabling server along with the change of the position of the UE, and finds an edge enabling server closest to the UE according to the edge enabling server list and the position information of the UE. And sending a switching request message to the UE, where the switching request message includes an identifier of the edge-enabled server 2 to be switched, address information, and an identifier and address information of a corresponding second edge application on the edge-enabled server. The address information may be one or more of a URL or an IP address, etc.
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 process of the first edge application before switching, so that after the user equipment switches to the second edge application, the seamless switching can 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 playing position of the video, and the like. In addition, the context information may include an application key, which is used to implement bidirectional authentication or message transmission encryption between the UE and the edge-enabled server or the edge application. The context information may also include sequence number information of data packets or data frames sent by the edge application to the UE. Similarly, the sequence number information of the data packet or data frame transmitted by the UE to the edge application may also be used.
When the edge configuration server 20 sends the switching configuration information of the edge application to the user equipment, the switching configuration information may be sent actively (for example, sent periodically), or may be sent passively (for example, sent based on a request of the user equipment), and the latter may take the following form, but is not limited thereto: receiving a second request message (e.g., a route change request message) from the ue, where the second request message is used to request to acquire 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: an identification of a second edge-enabled server and an 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 communication system is described in detail below with reference to 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 an identifier of the first edge enabling server and identifiers of all edge applications on the first edge enabling server, and the identifier 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 cause of registration failure, and the cause of registration failure may be authentication failure;
step S306, the first edge enabling server sends a notification message of updating information to the edge configuration server; it should be noted that this step is optional, that is, step S306 may not be executed, and step S308 is directly executed;
specifically, when an edge application on the edge-enabled server changes, for example, the edge application is added or deleted, or when configuration information of the edge-enabled server changes, for example, a geographic location or an identity of the edge-enabled server changes, the edge-enabled server triggers sending of a notification message to the edge-enabled server, where the notification message may include one or more of the geographic location information, the identity information of the edge-enabled server, and the identity 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 identifier of the second edge enabling server and the identifiers 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, wherein the edge application registration response message carries registration state information, such as successful registration or cause of registration failure, and the cause of registration failure may be authentication failure;
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 the edge-enabled servers, and the edge application list of each edge-enabled server comprises all the 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-enabled server monitors an event trigger, where the event may be a change in location information of the UE;
step S318, the edge enable server sends a context transfer request message to the edge configuration server, wherein the context transfer request message comprises a request reason, edge computing application context information (including an application layer key between the UE and the edge computing application 1), a UE ID or UE position information and the like;
step S320, the edge configuration server sends a context transfer response message to the edge enabling server, wherein the response message comprises indication information used for indicating whether the context transfer is allowed or not;
step S322, the Edge configuration server obtains the location information of the UE, determines the most preferable 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, 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), a UE ID or UE location information (or a UE Edge identification UE Edge ID), and the like;
in some optional embodiments of the present application, the edge configuration server may obtain the location information by: receiving location information actively reported by the 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: latitude and longitude coordinates, etc. In other alternative embodiments of the present application, the position information may be obtained by:
in the session establishment process, the UE sends a Protocol Data Unit (PDU) session establishment request to an Access and mobility Management Function (AMF), and meanwhile, a base station of the Access Network reports the UE location information to the AMF, and the edge-enabled server may request the 5G core Network to acquire the location information of the UE through a Network open Function (NEF). The method of acquiring the location information may be various. For example, the edge-enabled server may obtain the location information of the UE by means of a "request-response". The edge-enabled server may also request the 5G core network for subscribing 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 context transfer response information to the edge configuration server, and the response information comprises state information about whether the context transfer is successful;
step S326, the first edge-enabled server sends a context transfer confirmation message to the edge configuration server; this step is optional, i.e., step S326 may not be executed, and step S328 may be directly executed;
step S328, the first edge-enabling server sends a dynamic information notification message to the UE, the dynamic information notification message instructs the UE to request the edge data network server for querying the edge-enabling server to be switched;
step S330, UE sends request message for changing edge application route to edge configuration server;
step S332, the edge configuration server sends an edge application route change response message to the UE, where the response message includes an identifier of the second edge-enabled server and an identifier of an edge application on the second edge-enabled server;
in step S334, the UE connects to the second edge application on the second edge-enabled server according to the identifier.
The following describes the switching process in the next specific application scenario with reference to the embodiment shown in fig. 2 b:
the vehicle is first connected to the edge-enabled server 1 through the 5G access network and the core network. Thereafter, the edge-enabling server 1 cannot provide a low-latency reliable service to the vehicle due to the positional distance as the vehicle moves. Therefore, the edge enabling server initiates switching, so that the terminal can be switched to a new edge configuration server which is optimal and 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-enabled server, or may be disposed in the edge-enabled server as a configuration module, that is, there is one configuration module in each edge-enabled server, and the edge-enabled servers may communicate end-to-end. The edge-enabled server may be a server-side program.
Based on the scheme, the configuration of the switching process of the edge application of the user equipment is realized, so that the switching of the edge application of the user equipment can be realized, and the technical problem that no corresponding switching scheme of the edge application exists when the user equipment moves in the related art is solved
Example 2
Based on the system shown in fig. 2, the present application also provides a method embodiment of a terminal-server communication method, and it should be noted that the steps shown in the flowchart of the figure can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from the order shown.
Fig. 4 is a flowchart illustrating a communication method between a terminal and a server according to an embodiment of the present invention. As shown in fig. 4, the method includes:
step S402, an edge configuration server receives a first request message sent by a first edge-enabled server, wherein the first request message is used for requesting to switch a first edge application provided by a first edge-enabled server to a second edge application provided by a second edge-enabled server, and the first request message comprises context information of the first edge application corresponding to the user equipment;
step S404, the edge configuration server determines a second edge-enabled server from the edge-enabled server list;
step S406, the edge configuration server sends the context information of the first edge application to the second edge-enabled server, and sends the switching 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 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 for updating the context information of the second edge application corresponding to the user equipment.
Alternatively, step S404 may be implemented by: the method comprises the steps that an edge configuration server obtains at least one of position information of user equipment and the type of a 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 an edge application list provided by a second edge enabling server; and determining 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 enabling server, wherein the second edge application is 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-enabled server, where the response message includes: indication information for indicating whether 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 acquire the switching configuration information of the second 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 the switching configuration information of the second edge application.
In some embodiments of the present application, the handover configuration information of the edge application includes: an identification of a second edge-enabled server and an identification of a second edge application provided by the second edge-enabled server.
The first request message includes at least one of the following: a request reason, status information of the edge application, and location information of the user equipment.
It should be noted that, reference may be made to the description in example 1 for a preferred implementation of the embodiment of the present application, and details are not described here.
Example 3
Fig. 5 is a flowchart of another terminal-server communication method according to embodiment 3 of the present application. As shown in fig. 5, the method includes:
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.
Step S504, the first edge-enabled server sends a first request message to the edge configuration server, where the first request message is used to request to switch a first edge application provided by the first edge-enabled server to a second edge application provided by the second edge-enabled server, and the first request message includes context information of the first edge application.
It should be noted that, reference may be made to the description in example 1 for a preferred implementation of the embodiment of the present application, and details are not described here.
Example 4
Fig. 6 is a flowchart of another terminal-server communication method according to embodiment 4 of the present application. As shown in fig. 6, the method includes:
step S602, the ue sends a second request message to the edge configuration server, where the second request message is used to request the second edge-enabled server to provide the switching configuration information of the second edge application;
step S604, the user equipment receives the switching configuration information;
in step S606, the user equipment switches from the first edge application on the first edge-enabled server to the second edge application based on the switching configuration information.
It should be noted that, reference may be made to the description in example 1 for a preferred implementation of the embodiment of the present application, and details are not described here.
Example 5
Fig. 7 is a block diagram of a communication apparatus between a terminal and a server according to embodiment 4 of the present application. The apparatus is applied to an edge configuration server, and is configured to implement the method shown in fig. 4, as shown in fig. 7, the communication apparatus includes:
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 that a first edge application provided by the first edge-enabled server of a user equipment is switched to a second edge application provided by a second edge-enabled server, and the first request message includes context information of the first edge application corresponding to 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 switching configuration information of the edge application to the user equipment, where the switching 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, 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, reference may be made to the description in example 1 for a preferred implementation of the embodiment of the present application, and details are not described 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, and as shown in fig. 8, the method includes steps S802 to S804:
step S802, 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;
specifically, the method comprises the following steps: the method comprises the steps that an 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 to a second edge application provided by a second edge enabling server, and the first request message comprises context information of the first edge application corresponding to user equipment.
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 ue switches to the second edge application.
In some embodiments of the present application, when performing step S804, switching configuration information of the edge application may also be sent to the user equipment, where the switching configuration information of the edge application is used to provide configuration information, for example, an identifier of an enabling server, an identifier of the edge application, for the user equipment to switch from the first edge application to the second edge application.
In some embodiments of the present application, 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 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 an edge application list provided by a second edge enabling server; and determining switching configuration information corresponding to the second edge application. It should be noted that the edge-enabled server list may be an edge-enabled server list maintained by the edge configuration server.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination 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 or the sequence of acts described, as some steps may be performed in other orders or concurrently according to the present invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program instructing hardware associated with the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute 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), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (14)
1. A communication method between a terminal and a server is characterized by comprising the following steps:
the method comprises the steps that an edge configuration server receives a first request message sent by a first edge-enabled server, wherein the first request message is used for requesting to switch a first edge application provided by the first edge-enabled server to a second edge application provided by a second edge-enabled server, and the first request message comprises context information of the first edge application corresponding to user equipment;
the edge configuration server determines the second edge-enabled server from a list of edge-enabled servers;
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 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 for updating the context information of the second edge application corresponding to the user equipment.
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 acquires at least one of position information of the user equipment and the type of the first edge application;
the edge configuration server determines the second edge-enabled server from an edge-enabled server list according to at least one of the location 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-enabled server.
3. The method of claim 2, wherein the edge configuration server determines the second edge-enabled server from an edge-enabled server list according to at least one of location information of the user equipment and a type of the first edge application, comprising:
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 a second edge enabling server; and
determining a second edge application from the list of edge applications of the second edge-enabled server, the second edge application being the same type of application as the first edge application.
4. The method of claim 2, wherein 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 method further comprises:
and 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 first edge application to the user equipment, 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 switching configuration information of the second 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 the switching configuration information of the second edge application.
6. The method of claim 1, wherein before the edge configuration server determines the second edge application from a list of edge applications, the method further comprises:
the edge server receives a third request message of the appointed edge enabling, wherein the third request message carries the identifier of the appointed edge enabling server and the identifiers of all edge applications on the appointed edge enabling server, and the appointed edge enabling server at least comprises the second edge enabling server.
7. The method of claim 1, wherein the handover configuration information of the first edge application comprises: an identification of the second edge-enabled server and an identification of the second edge application provided by the second edge-enabled server.
8. The method according to any of claims 1 to 7, wherein the first request message comprises at least one of: a request reason, status information of the edge application, and location information of the user equipment.
9. A communication method between a terminal and a server is characterized by comprising the following steps:
the first edge-enabled server detects a triggering 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 a second edge enabling server, and the first request message comprises context information of the first edge application.
10. The method of claim 9, wherein the triggering event comprises: the location information of the user equipment changes.
11. A communication method between a terminal and a server is characterized by comprising the following steps:
the user equipment sends a second request message to the edge configuration server, wherein the second request message is used for requesting the switching configuration information of a second edge application provided by a second edge enabling server;
the user equipment receives the switching configuration information;
the user equipment is switched from the first edge application on the first edge-enabled server to the second edge application based on the switching configuration information.
12. A communication device between 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-enabled server, where the first request message is used to request that a first edge application provided by the first edge-enabled server of a user equipment is switched to a second edge application provided by a second edge-enabled server, and the first request message includes context information of the first edge application corresponding to the user equipment;
a determining module, configured to determine the second edge-enabled server from an 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 switching configuration information of the first edge application to the user equipment, where the switching 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 a 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.
13. 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 content of the first and second substances,
the edge configuration server is configured to receive a first request message sent by the first edge-enabled server, where the first request message is used to request that the user equipment is switched from a first edge application to a second edge application provided by a second edge-enabled server, and the first request message includes context information of the first edge application corresponding to 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-enabled server to provide the first edge application;
the second edge-enabled server is used for providing the second edge application; receiving context information of the first edge application sent by the edge configuration server;
the user equipment is configured to receive 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 context information of the second edge application according to the context information of the first edge application.
14. A communication method between a terminal and a server is characterized by comprising the following steps:
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 sends the context information of the first edge application to a second edge enabling server, so that when the user equipment is switched to a second edge application, the context information of the second edge application is updated according to the context information of the first edge application.
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| WO2023051581A1 (en) * | 2021-09-30 | 2023-04-06 | 华为技术有限公司 | Method and apparatus for application context relocation |
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