Fast access point switching method based on dynamic access path selection mechanism

Abstract

The invention discloses a rapid access point switching method based on a dynamic access path selection mechanism, wherein, in a multi-hop relay broadband radio access network, each district exists a plurality of access points, including a base station and a delay station, a mobile user dynamically and rapidly switches to the access point of an adjacent district in a moving process according to the quality of a current radio channel with the aid of access path selection algorithm. By means of access point reselection, information such as the bandwidth, delay and hop count of a candidate access point path, and the current connection business type of the mobile user and service quality parameter thereof, the method of the invention selects the access path that satisfies current traffic condition from the candidate access points, and according to a best anchoring access point selected from business information obtained beforehand from a reserved network, the best access path is determined. When the mobile user needs switching, a target access point is switched rapidly, and the rapid access point switching method reduces switching delay, and different treatment on business with different priority improves switching connection rate.

Description

technical field [0001] The invention belongs to the field of broadband wireless communication, and relates to a switching method, in particular to a fast access point switching method based on a dynamic access path selection mechanism, which can be widely used in wireless access metropolitan area networks with multi-hop non-transparent relay stations. Background technique [0002] The future broadband wireless communication network will be able to provide higher capacity, larger coverage and faster data transmission rate. At the same time, diversification of service types and higher-speed mobility support are also the development direction of wireless communication. . In traditional wireless networks, if operators have limited spectrum resources, they can only increase capacity through cell splitting. In addition, the indoor coverage problem is also one of the bottlenecks in the development of data services. For data services, most of the traffic is concentrated indoors, a...

AI Technical Summary

Problems solved by technology

The relay station can not only improve the capacity of the cell and expand the coverage area, but also adopts the wireless access method, which reduces the cost of the operator. However, due to the increase of the system complexity, it brings some problems to the mobility support:

[0005] The addition of relay sites complicates the network and increases the handover execution time, which brings greater handover delay. How to effectively reduce the delay and quickly connect to the new access point is also a problem that needs to be solved

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