Connection establishment method, device and communication system

Abstract

A method for establishing a connection includes: after establishing a first host identity protocol(HIP) association between a first address of a second terminal and a second address of a first terminal, the second terminal saves a first mapping relation among the first address, the second address and the first HIP association; a first transmission control protocol(TCP) connection between the first address and the second address is established, and a first TCP SYN message includes connection identity(CID) information; the second terminal establishes a second HIP association between a third address and a forth address of the second terminal, and saves a second mapping relation among the third address, the forth address and the second HIP association; a second TCP connection between the third address and the forth address is established, and a second TCP SYN message includes CID information which is the same with that of the first TCP SYN message. An apparatus for establishing a connection and a communication system corresponding to the method for establishing a connection are also provided. The multi-access of the terminal in the HIP network can be realized.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a connection establishment method, device and communication system. Background technique [0002] As the mobility of terminals increases, mobility management needs to be implemented on the terminal host. In order to solve the mobility problem of the host, the Internet Engineering Task Force (IETF: Internet Engineering Task Force) proposed a method of separating the identification and positioning functions to solve the mobility, which is also the Host Identity Protocol (HIP: Host Identity Protocol ) starting point. In the HIP protocol, the idea of ​​an asymmetric key encryption algorithm is adopted, and the public key in the key pair is used as the host identity (HI: Host Identity) of the node. Since HI as a public key may be relatively long, it is not very practical to use it in all cases. In actual use, the saved value is the 128-bit hash value of the host ident...

AI Technical Summary

Problems solved by technology

[0005] However, since the host identification protocol introduces the HIP layer in the protocol stack, the original correspondence between ports and IPs is changed to the correspondence between ports and HITs, and at the same time, HITs in the HIP layer can only be bound to one IP address, so The terminal cannot realize multiple access on the HIP network

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