W1MAX network switching method based on system capacity

Abstract

The invention relates to a W1MAX network switching method based on system capacity, belonging to the technical field of wireless network. The W1MAX network switching method comprises the following steps: currently maximum effective capacity of a base station is calculated; the base station informs a mobile terminal currently idle capacity of all neighbors by broadcast messages of the neighbors; the neighbor broadcast messages are used as carriers to update effective idle capacity of the current base station and the adjacent base stations dynamically to the mobile terminal; when the capacity of the current base station and the adjacent base stations meets the conditions of switching and triggering, the mobile terminal starts switching and scanning of the cell; the mobile terminal selects a target cell and carries out cell switching according to the cell decision strategy. Compared with the prior art, the W1MAX network switching method can improve the switching performance of the mobile terminal in the W1MAX network, thus improving the throughput of the whole network and reducing packet loss.

Description

technical field [0001] The invention relates to a method in the field of wireless network technology, in particular to a system capacity-based WiMAX network switching method. Background technique [0002] For the research on the cell handover scheme in the WiMAX network, predecessors have done a lot of work. Part of the work is to apply the cell handover scheme of other wireless networks (such as GSM) to the WiMAX network; another part of the work is called the queuing theory + resource reservation scheme, that is, the base station reserves a part of bandwidth resources for the cell handover of the terminal, which can Ensure a low handover rejection rate during cell handover, and at the same time appropriately expand the "handover area" of the WiMAX network to increase the queuing time of mobile terminals, thereby reducing the disconnection rate of handover. [0003] Through literature retrieval of the prior art, it is found that P.Boone et al. published in 2008 "Internatio...

AI Technical Summary

Problems solved by technology

Its shortcoming is that it does not mention when to start cell switching

However, the traditional cell handover scheme has the following deficiencies: handover is based only on signal strength, which may not be sufficient in WiMAX networks; "ping-pong effect" and "handover synchronization effect". Handover between two similar cells, "handover synchronization effect" means that many mobile terminals switch into a cell almost at the same time, resulting in cell network congestion

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