Location identifier and host identifier separation-based system and mobility management method thereof

Abstract

The invention provides a location identifier and host identifier separation-based network system and a mobility management method thereof. The system consists of a core area CA, a routing area RA formed by an organization area OA, a routing area router (RA Router), an organization area router (OA router), a mapping server in the routing area, and various terminals. To simplify the system, functional modules of the mapping server are distributed in routers in the routing area, including the RA router and the OA router, namely a distributed Hash table is used to organize the all RA routers and OA routers in the routing area to store the mapping information between a terminal location identifier, a location identifier of the OA Router connected with the terminal currently, and a host identifier; and from the terminal perspective, the router storing the mapping information of a terminal is called a mapping router Router-M of the terminal. The invention also provides an improved mobility management method on the basis of the network, which supports mobile conversation on the basis of solving the problem of routing expansibility. Furthermore, the invention can be compatible with Internet to reduce the deployment difficulty.

Description

technical field [0001] The invention relates to a network system and a mobility management method based on the separation of location identification and host identification, and belongs to the technical field of data transmission and IP core network. Background technique [0002] With the extensive use of mobile terminals and the development of technologies such as multi-home networks and traffic engineering, operator-independent PI (Provider Independent) addresses are widely used, resulting in the number of prefixes in the default free zone DFZ (Default-free zone) routing table growing superlinearly. In 2010, the number of DFZ address prefixes on the Internet reached 320,000. The extensive use of PI addresses and the enhancement of terminal mobility have brought about massive updates to the Border Gateway Protocol (BGP). Currently, BGP updates about 440,000 times per day on average. Therefore, the current routing system of the Internet has serious scalability problems. ...

AI Technical Summary

Problems solved by technology

However, these solutions lack a complete mobility management mechanism, or cannot support the continuity of mobile sessions, or have problems such as large handover delay, high packet loss rate, and security risks.

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