CN112637310B - Method for discovering edge service and edge service network - Google Patents
Method for discovering edge service and edge service network Download PDFInfo
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- CN112637310B CN112637310B CN202011492251.8A CN202011492251A CN112637310B CN 112637310 B CN112637310 B CN 112637310B CN 202011492251 A CN202011492251 A CN 202011492251A CN 112637310 B CN112637310 B CN 112637310B
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- 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
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- H04L67/1014—Server selection for load balancing based on the content of a request
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Abstract
The embodiment of the invention provides a method for discovering edge service and an edge service network, belongs to the technical field of edge service, and can at least partially solve the problem that the prior art cannot effectively realize the selection of edge nodes under various conditions. The method for discovering the edge service is used for an edge service network, the edge service network comprises at least one edge computing system, and each edge computing system belongs to a plurality of edge nodes; the method comprises the following steps: sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal; and determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal.
Description
Technical Field
The embodiment of the invention belongs to the technical field of edge services, and particularly relates to a method for discovering edge services and an edge service network.
Background
With the development of technology (such as the development of 5G business), edge services (edge computing) are gaining more and more acceptance and attention.
The edge service is realized based on an edge node, the edge node is a service platform (such as a server and a base station) constructed at the edge of a network side close to a User side, and can provide resources such as storage, calculation, a network and the like, and partial application (edge application) of a terminal (User Equipment, UE) is executed at the edge node, which is equivalent to sinking partial service to the edge of an access network, so that bandwidth occupation, delay loss and the like caused by multi-layer network transmission can be reduced.
In order to ensure the continuity of the edge application service, when a user causes cell switching of a terminal in the moving process, an edge node for providing service needs to be reselected.
For example, when the terminal moves out of the cell of the current edge node, a new edge node (an edge node with a desired edge application deployed) with an optimal route needs to be found according to the new location of the terminal and the belonging network, and then the edge application of the terminal is switched to the newly selected edge node, so as to ensure the continuity of the edge application service. In addition, for the consideration of load balancing, or when the performance of the current edge node is not satisfactory due to some circumstances (for example, a failure occurs), the edge node also needs to be reselected to perform migration of the edge application. And the above process of reselecting an edge node for a terminal is referred to as "edge service discovery".
Referring to fig. 1, different telecom operators usually deploy different edge computing systems (e.g., MEC systems), each edge computing System belongs to multiple edge nodes (e.g., MEC platforms), and even the same operator may deploy multiple different edge computing systems due to historical reasons such as service development.
In many cases, the terminal may need to migrate between edge nodes of different edge computing systems. For example, in a scenario where a terminal moves at a high speed, such as a high-speed rail or a highway, in order to implement seamless migration of edge applications, the terminal may need to migrate between edge nodes of different edge computing systems arranged along a high-speed rail or a highway.
The existing edge service discovery technology only selects edge nodes on a terminal side or a network side. However, the network side cannot consider the specific requirements of each terminal; however, how the computing power of the terminal side cannot be developed, obviously, the information of all possible edge nodes in the candidate edge computing system cannot be gathered.
Therefore, the existing edge service discovery technology cannot effectively realize the selection of the edge node under various conditions; for example, the selected edge node may not be optimal, or edge node switching across edge computing systems may not be possible, or in some extreme cases, misselection may occur, etc.
Disclosure of Invention
The embodiment of the invention at least partially solves the problem that the prior art can not effectively realize the selection of the edge node under various conditions, and provides a method for discovering the edge service and an edge service network which can effectively realize the selection of the edge node under various conditions.
In a first aspect, an embodiment of the present invention provides a method for edge service discovery, where the method is used for an edge service network, where the edge service network includes at least one edge computing system, and each edge computing system belongs to multiple edge nodes; the method comprises the following steps:
sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal;
and determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal.
Optionally, the edge service network includes a plurality of edge computing systems, and a control system connected to each edge computing system; the edge computing system to which the edge node currently connected with the terminal belongs is a current edge computing system;
the sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal includes: the current edge computing system sends an edge node selection tendency request to a terminal according to an edge service discovery request, and receives edge node selection tendency information from the terminal.
Optionally, the determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal includes:
when the target edge node is an edge node in the current edge computing system, the current edge computing system selects the target edge node from the edge nodes according to the edge node selection tendency information, and sends the information of the target edge node to a terminal.
Optionally, the determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal includes:
when the target edge node is an edge node in a target edge computing system different from the current edge computing system, the current edge computing system sends edge node selection tendency information and an edge service discovery request to a control system;
and the control system selects a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sends the information of the target edge node to a terminal.
Optionally, the selecting, by the control system, a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sending information of the target edge node to the terminal includes:
the control system sends an edge node information request to a target edge computing system according to the edge service discovery request;
the target edge computing system judges whether the edge node information is allowed to be provided or not according to the received edge node information request, and if so, the edge node information of the edge node in the target edge computing system is sent to the control system;
and the control system selects a target edge node from the edge nodes in the target edge computing system according to the edge node selection tendency information and the received edge node information, and sends the information of the target edge node to a terminal.
In a second aspect, an embodiment of the present invention provides an edge service network, including at least one edge computing system, where each edge computing system belongs to multiple edge nodes; the edge service network is configured to:
sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal;
and determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal.
Optionally, the edge service network includes a plurality of edge computing systems, and a control system connected to each edge computing system; wherein, the edge computing system to which the edge node currently connected with the terminal belongs is a current edge computing system;
the current edge computing system is to: according to the edge service discovery request, an edge node selection tendency request is sent to a terminal, and edge node selection tendency information from the terminal is received.
Optionally, when the target edge node is an edge node in the current edge computing system, the current edge computing system is further configured to:
and selecting a target edge node from the edge nodes according to the edge node selection tendency information, and sending the information of the target edge node to a terminal.
Optionally, when the target edge node is an edge node in a target edge computing system different from the current edge computing system;
the current edge computing system is further to: sending edge node selection tendency information and an edge service discovery request to a control system;
the control system is configured to: and selecting a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sending the information of the target edge node to a terminal.
Optionally, the control system is further configured to: sending an edge node information request to a target edge computing system according to the edge service discovery request; selecting a target edge node from edge nodes in the target edge computing system according to the edge node selection tendency information and the received edge node information;
the target edge computing system is to: and judging whether the edge node information is allowed to be provided or not according to the received edge node information request, if so, sending the edge node information of the edge node in the edge node information to a control system, and sending the information of the target edge node to a terminal.
In the embodiment of the invention, the edge service network selects the corresponding target edge node for the terminal according to the tendency of each terminal to the edge node so as to ensure that the selected target edge node most meets the requirements of the terminal, thereby effectively realizing the selection of the edge node under various conditions, hardly occupying the resources of the terminal and having no requirements on the capability of the terminal.
Further, when the edge service network according to the embodiment of the present invention includes a plurality of edge computing systems (e.g., a plurality of edge computing systems of different operators), the edge service network further includes a control system (or "edge Federation") connected to each edge computing system, and the edge Federation can obtain information of a plurality of different edge computing systems and manage them, so as to implement edge node switching across the edge computing systems.
Drawings
FIG. 1 is a schematic diagram of a conventional edge service network;
fig. 2 is a schematic structural diagram of an edge service network according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for edge service discovery according to an embodiment of the present invention;
FIG. 4 is a flowchart of another method for edge service discovery according to an embodiment of the present invention;
fig. 5 is a signaling diagram of another method for edge service discovery according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the embodiments of the present invention, the embodiments of the present invention are further described in detail below with reference to the drawings and the detailed description.
It is to be understood that the specific embodiments and figures described herein are merely illustrative of the embodiments of the invention and are not limiting of the invention.
It is to be understood that the embodiments of the invention and the features of the embodiments can be combined with each other without conflict.
It is to be understood that, for the convenience of description, only portions related to embodiments of the present invention are shown in the drawings of the embodiments of the present invention, and portions not related to the embodiments of the present invention are not shown in the drawings.
It will be understood that, without conflict, the functions, steps, etc. noted in the flowchart and block diagrams of the embodiments of the present invention may occur in an order different from that noted in the figures.
It is to be understood that the flowchart and block diagrams of the embodiments of the present invention illustrate the architecture, functionality, and operation of possible implementations of systems, apparatus, devices and methods according to various embodiments of the present invention. Each block in the flowchart or block diagrams may represent a unit, module, segment, code, which comprises executable instructions for implementing the specified function(s). Furthermore, each block or combination of blocks in the block diagrams and flowchart illustrations can be implemented by a hardware-based system that performs the specified functions or by a combination of hardware and computer instructions.
It should be understood that each unit and module related in the embodiments of the present invention may correspond to only one physical structure, may also be composed of multiple physical structures, or multiple units and modules may also be integrated into one physical structure.
It is to be understood that the units and modules involved in the embodiments of the present invention may be implemented by software, and may also be implemented by hardware, for example, the units and modules may be located in a processor.
In a first aspect, an embodiment of the present invention provides a method for edge service discovery.
Referring to fig. 2, the method of the embodiment of the present invention is applied to an edge service network including at least one edge computing system, each of which belongs to a plurality of edge nodes.
In the embodiment of the invention, the edge service network is a network system for providing edge service for the terminal. The edge service network includes one or more edge computing systems (e.g., MEC systems); each edge computing system belongs to a plurality of edge nodes (e.g., MEC Platform, which may be a server, a base station, etc.), and is configured to manage, select, etc. the edge nodes (e.g., the edge nodes may periodically report information thereof to the edge computing system to which the edge nodes belong); and each edge node is accessible to multiple terminals to provide edge services.
The terminal refers to any device that can access the edge service network and obtain the edge service, and may be, for example, a mobile phone, a computer, a vehicle-mounted terminal, etc. of a user.
Referring to fig. 3, a method of an embodiment of the present invention includes:
s101, according to the edge service discovery request, sending an edge node selection tendency request to the terminal, and receiving edge node selection tendency information from the terminal.
When an edge service discovery request exists, an edge service network sends an edge node selection tendency request to a corresponding terminal, requires to acquire edge node selection tendency information of the terminal, and receives edge node selection tendency information fed back by the terminal later.
The "edge node selection tendency" is a tendency that the terminal determines according to its own condition to select various different edge nodes, for example, the "edge node selection tendency information" may include information of operators supported by the terminal, information of hardware (e.g., GPU) processing capability required by the terminal, and the like.
S102, determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal.
After the edge node selection tendency information of the terminal is obtained, a proper edge node can be selected as a target edge node according to the tendency (certainly, the information of each edge node) of the terminal for selecting the edge node, and the information of the target edge node is sent to the terminal so that the terminal can be switched to the target edge node.
In the embodiment of the invention, the edge service network selects the corresponding target edge node for the terminal according to the tendency of each terminal to the edge node so as to ensure that the selected target edge node most meets the requirements of the terminal, thereby effectively realizing the selection of the edge node under various conditions, hardly occupying the resources of the terminal and having no requirements on the capability of the terminal.
Optionally, the edge service network includes a plurality of edge computing systems, and a control system connected to each edge computing system; and the edge computing system to which the edge node currently connected with the terminal belongs is a current edge computing system.
According to the edge service discovery request, referring to fig. 4 and 5, the sending of the edge node selection tendency request to the terminal and the receiving of the edge node selection tendency information from the terminal (S101) includes:
s1011, the current edge computing system sends an edge node selection tendency request to the terminal according to the edge service discovery request, and receives edge node selection tendency information from the terminal.
Referring to fig. 2, 4 and 5, when the edge service network includes a plurality of edge computing systems (e.g., a plurality of edge computing systems of different operators), when a terminal has an edge service discovery request, the edge computing system to which the edge node currently (before handover) connected to the terminal is located is a "current edge computing system", and the steps of sending an edge node selection tendency request to the terminal and receiving edge node selection tendency information of the terminal are performed by the current edge computing system.
Referring to fig. 2, fig. 4, and fig. 5, further, when the edge service network according to the embodiment of the present invention includes a plurality of edge computing systems (e.g., a plurality of edge computing systems of different operators), a control system (or "MEC Federation") connected to each edge computing system is further included, and the edge Federation can obtain information of a plurality of different edge computing systems and manage them, so as to implement edge node switching of the edge computing systems.
It should be understood that although the "control system" is shown in fig. 2 as a single module, the actual implementation thereof may be various, for example, the control system may be deployed by a single piece of hardware (module) or may be separately deployed on the hardware of different edge computing systems in a distributed manner.
Optionally, referring to fig. 4 and 5, determining a target edge node according to the edge node selection tendency information, and sending information of the target edge node to the terminal (S102) includes:
and S1021, when the target edge node is the edge node in the current edge computing system, the current edge computing system selects the target edge node from the edge nodes according to the edge node selection tendency information, and sends the information of the target edge node to the terminal.
As a case (case one) of the embodiments of the present invention, when the edge service discovery request indicates that the terminal should still remain in the current edge computing system (that is, the target edge node is an edge node in the current edge computing system), the current edge computing system directly selects, according to the received edge node selection tendency information and information of each edge node under its own control, a most suitable edge node from each edge node under its control as the target edge node, and sends the information of the target edge node to the terminal, so that the terminal is switched to the target edge node (that is, edge node switching in the edge computing system).
Optionally, referring to fig. 4 and 5, determining a target edge node according to the edge node selection tendency information, and sending information of the target edge node to the terminal (S102) includes:
s10221, when the target edge node is an edge node in a target edge computing system different from the current edge computing system, the current edge computing system sends edge node selection tendency information and an edge service discovery request to the control system.
S10222, the control system selects a target edge node from edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sends the information of the target edge node to the terminal.
As another case (case two) of the embodiment of the present invention, when the edge service discovery request indicates that the terminal should not remain in the current edge computing system but needs to switch to another edge computing system (referred to as a target edge computing system) (that is, the target edge node is an edge node in a target edge computing system different from the current edge computing system), the current edge computing system should send the edge node selection tendency information and the edge service discovery request to the control system.
Furthermore, the control system can determine which edge node in the target edge computing system should be the target edge node according to the received edge node selection tendency information and the edge service discovery request, and send the information of the target edge node to the terminal.
Optionally, referring to fig. 4 and 5, the selecting, by the control system, a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sending information of the target edge node to the terminal (S10222) includes:
s102221, the control system sends the edge node information request to the target edge computing system according to the edge service discovery request.
S102222, the target edge computing system judges whether the edge node information is allowed to be provided according to the received edge node information request, and if yes, the edge node information of the edge node is sent to the control system.
S102223, the control system selects a target edge node from the edge nodes in the target edge computing system according to the edge node selection tendency information and the received edge node information, and sends the information of the target edge node to the terminal.
When a target edge node is to be selected by the control system (i.e., in case two above), the control system first determines a target edge computing system according to the received edge service discovery request, and sends an edge node information request to the target edge computing system, requesting to acquire information (edge node information) of each edge node in the target edge computing system.
After receiving the edge node information request, the target edge computing system determines whether to allow the request and provides the edge node information to the control system, that is, determines whether to allow the terminal to use the edge node to which the terminal belongs.
For example, the target edge computing system may determine whether to allow the terminal to use the edge node to which the terminal belongs according to a cooperation agreement between the target edge computing system and the current edge computing system, whether a network roaming agreement is signed between the two edge computing systems, and the like.
When the target edge computing system determines that the edge node information is allowed to be provided, the target edge computing system sends information (edge node information) of each edge node to which the target edge computing system belongs to the control system.
Of course, if the target edge computing system determines that it is not allowed to provide edge node information, it may directly send a reject response to the control system.
After receiving edge node information provided by a target edge computing system, a control system selects an optimal edge node from all edge nodes of the target edge computing system as a target edge node according to the edge node information and edge node selection tendency information received from the current edge computing system before, and sends the information of the target edge node to a terminal for the terminal to switch to the target edge node (namely, edge node switching of a cross-edge computing system).
In a second aspect, an embodiment of the present invention provides an edge service network.
The edge service network of the embodiment of the invention can realize any one of the methods for discovering the edge service.
Referring to fig. 2, an edge service network according to an embodiment of the present invention includes at least one edge computing system, each of which is subordinate to a plurality of edge nodes; the edge service network is to:
sending an edge node selection tendency request to the terminal according to the edge service discovery request, and receiving edge node selection tendency information from the terminal;
and determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to the terminal.
Optionally, the edge service network includes a plurality of edge computing systems, and a control system connected to each edge computing system; the edge computing system to which the edge node currently connected with the terminal belongs is a current edge computing system;
the current edge computing system is to: and according to the edge service discovery request, sending an edge node selection tendency request to the terminal, and receiving edge node selection tendency information from the terminal.
Optionally, when the target edge node is an edge node in the current edge computing system, the current edge computing system is further configured to:
and selecting a target edge node from the edge nodes according to the edge node selection tendency information, and sending the information of the target edge node to the terminal.
Optionally, when the target edge node is an edge node in a target edge computing system different from the current edge computing system;
the current edge computing system is further to: sending edge node selection tendency information and an edge service discovery request to a control system;
the control system is used for: and selecting a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sending the information of the target edge node to the terminal.
Optionally, the control system is further configured to: sending an edge node information request to a target edge computing system according to the edge service discovery request; selecting a target edge node from edge nodes in the target edge computing system according to the edge node selection tendency information and the received edge node information;
the target edge computing system is to: and judging whether the edge node information is allowed to be provided or not according to the received edge node information request, and if so, sending the edge node information of the edge node to a control system.
In the embodiment of the invention, the edge service network selects the corresponding target edge node for the terminal according to the tendency of each terminal to the edge node so as to ensure that the selected target edge node most meets the requirements of the terminal, thereby effectively realizing the selection of the edge node under various conditions, hardly occupying the resources of the terminal and having no requirements on the capability of the terminal.
Further, when the edge service network according to the embodiment of the present invention includes a plurality of edge computing systems (e.g., a plurality of edge computing systems of different operators), the edge service network further includes a control system (or "edge Federation") connected to each edge computing system, and the edge Federation can obtain information of a plurality of different edge computing systems and manage them, so as to implement edge node switching across the edge computing systems.
It is to be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the embodiments of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the embodiments of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A method for edge service discovery is used for an edge service network, wherein the edge service network comprises at least one edge computing system, and each edge computing system belongs to a plurality of edge nodes; characterized in that the method comprises:
sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal, wherein the edge node selection tendency information comprises information of operators supported by the terminal and hardware processing capacity information required by the terminal;
determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal;
the edge service network comprises a plurality of edge computing systems and a control system connected with each edge computing system; wherein, the edge computing system to which the edge node currently connected with the terminal belongs is a current edge computing system;
the sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal includes: the current edge computing system sends an edge node selection tendency request to a terminal according to an edge service discovery request, and receives edge node selection tendency information from the terminal.
2. The method according to claim 1, wherein the determining a target edge node according to the edge node selection tendency information and sending the information of the target edge node to a terminal comprises:
when the target edge node is an edge node in the current edge computing system, the current edge computing system selects the target edge node from the edge nodes according to the edge node selection tendency information, and sends the information of the target edge node to a terminal.
3. The method according to claim 1, wherein the determining a target edge node according to the edge node selection tendency information and sending the information of the target edge node to a terminal comprises:
when the target edge node is an edge node in a target edge computing system different from the current edge computing system, the current edge computing system sends edge node selection tendency information and an edge service discovery request to a control system;
and the control system selects a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sends the information of the target edge node to a terminal.
4. The method of claim 3, wherein the control system selects a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sends information of the target edge node to a terminal, comprising:
the control system sends an edge node information request to a target edge computing system according to the edge service discovery request;
the target edge computing system judges whether the edge node information is allowed to be provided or not according to the received edge node information request, and if so, the edge node information of the edge node in the target edge computing system is sent to the control system;
and the control system selects a target edge node from the edge nodes in the target edge computing system according to the edge node selection tendency information and the received edge node information, and sends the information of the target edge node to a terminal.
5. An edge services network comprising at least one edge computing system, each said edge computing system subordinate to a plurality of edge nodes; wherein the edge service network is configured to:
sending an edge node selection tendency request to a terminal according to an edge service discovery request, and receiving edge node selection tendency information from the terminal, wherein the edge node selection tendency information comprises information of operators supported by the terminal and hardware processing capacity information required by the terminal;
determining a target edge node according to the edge node selection tendency information, and sending the information of the target edge node to a terminal;
the edge service network comprises a plurality of edge computing systems and a control system connected with each edge computing system; wherein, the edge computing system to which the edge node currently connected with the terminal belongs is a current edge computing system;
the current edge computing system is to: according to the edge service discovery request, an edge node selection tendency request is sent to a terminal, and edge node selection tendency information from the terminal is received.
6. The edge services network of claim 5 wherein when the target edge node is an edge node in a current edge computing system, the current edge computing system is further configured to:
and selecting a target edge node from the edge nodes according to the edge node selection tendency information, and sending the information of the target edge node to a terminal.
7. The edge services network of claim 6 wherein when the target edge node is an edge node in a target edge computing system different from a current edge computing system;
the current edge computing system is further to: sending edge node selection tendency information and an edge service discovery request to a control system;
the control system is configured to: and selecting a target edge node from the edge nodes in the target edge computing system according to the received edge node selection tendency information and the edge service discovery request, and sending the information of the target edge node to a terminal.
8. The edge services network of claim 7,
the control system is further configured to: sending an edge node information request to a target edge computing system according to the edge service discovery request; selecting a target edge node from edge nodes in the target edge computing system according to the edge node selection tendency information and the received edge node information;
the target edge computing system is to: and judging whether the edge node information is allowed to be provided or not according to the received edge node information request, if so, sending the edge node information of the edge node to a control system, and sending the information of the target edge node to a terminal.
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| EP3735006B1 (en) * | 2019-05-03 | 2023-04-05 | Nokia Solutions and Networks Oy | Efficient computing of application data in mobile communication network |
| CN110324853A (en) * | 2019-07-12 | 2019-10-11 | 中国科学院计算技术研究所 | A kind of anti-Caton mobile communications network switching method and corresponding network framework |
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