Virtualization EPC (Evolved Packet Core) system and service instantiation method

Abstract

The embodiment of this invention provides a virtualization EPC (Evolved Packet Core) system and a service instantiation method, can improve the definition of a service process and reduce the investment and maintenance cost. The system comprises a service chain template library, a network function resource pool and a service chain template library manager; the service chain template library comprises N service chain templates; each service chain template describes a service process; the service process comprises at least one service function point for realizing the service, and circulation relationships among the service functions; the network function resource pool comprises L atom network function entity sets and a dispatch service; each atom network function entity set is used for realizing a network function; the service chain template library manager is used for receiving service request information and determining the service chain template matched with the service; the dispatch server is used for determining the instantiation service of the atom network function entity of corresponding service chain template. The virtualization EPC system and the service instantiation method are applicable to the technical field of communication.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a virtualized Evolved Packet Core (EPC) system and a service instantiation method. Background technique [0002] At present, network virtualization technology has been introduced into EPC to overcome the complex system management and operation and maintenance defects of traditional EPC network element equipment due to its tightly coupled software and hardware characteristics. [0003] figure 1 Shown is a schematic diagram of the existing virtualized EPC deployment method, such as figure 1 As shown, the existing virtualization solution integrates the four main network elements of the EPC—Mobility Management Entity (English: Mobility Management Entity, abbreviated: MME) and Serving Gateway (English: Serving Gateway, abbreviated: SGW) through four data centers. ), packet data network gateway (English: PDN Gateway, abbreviated: PGW) and home subscriber server (English: Ho...

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Problems solved by technology

[0004] The inventors found that the existing EPC virtualization scheme has the following two problems: (1) Since the functional granularity of the existing virtualized network elements still continues the traditional network element functions, each virtualized network element has multiple functions, For example, the virtualized MME network element has multiple functions such as access control, mobility management, session management, and routing selection, and the functions of the virtualized network element that need to be invoked in different links of the service process may be different. Therefore, a single network element has Multiple functions will reduce the clarity of business processes; (2) There are some similar sub-functions between different virtualized network elements, for example, both virtualized SGW network elements and PGW network elements have the function of packet forwarding, while in actual deployment , SGW and PGW may be deployed in the same data center, which will lead to repeated construction and separate operation and maintenance of network element sub-functions, resulting in increased investment and maintenance costs for operators

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