Method for safely switching user terminal in wireless metropolitan area network

Abstract

The invention relates to the technical field of wireless metropolitan area networks, in particular to a method for safely switching a user terminal in a wireless metropolitan area network. The method comprises the following steps that: a target base station forwards switching request information to an access gateway; the target base station receives first user terminal joining request information, configures a first controlled port for the user terminal, and sets the first controlled port in a closed state; the access gateway finishes the session key negotiation process with the user terminalthrough the target base station; the access gateway updates a session key and sends second user terminal joining request information to the target base station; and the target base station acquires the session key and sets the first controlled port in an open state. By the method, the user terminal can be safely and quickly switched to the other base station from one base station under the same access gateway in the wireless metropolitan area network.

Description

technical field [0001] The invention relates to the technical field of wireless metropolitan area network, in particular to a safe user terminal switching method of the wireless metropolitan area network. Background technique [0002] As an important development direction of future wireless access technology, IEEE 802.16 wireless metropolitan area network has attracted widespread attention from all walks of life. However, safety issues have always restricted its further promotion and development. IEEE 802.16d defines an authentication protocol based on the public key encryption algorithm (RSA) and digital certificates, which can realize the authentication of the user terminal by the base station. The main disadvantage of IEEE 802.16d is that it only provides one-way authentication from the base station to the user terminal, but does not provide the authentication from the user terminal to the base station. It is very easy to deceive the user terminal by counterfeiting the b...

AI Technical Summary

Problems solved by technology

However, safety issues have always restricted its further promotion and development.

The main disadvantage of IEEE 802.16d is that it only provides the one-way authentication of the base station to the user terminal, but does not provide the authentication of the user terminal to the base station. It is very easy for the counterfeit base station to deceive the user terminal

However, WMAN-SA only defines functions such as identity authentication, key management, data encryption, data authentication, and replay protection, and does not include specific solutions for access gateways to manage user switching

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