Switching method for equalizing traffic distribution in mobile communication system

Abstract

A switching method for equalizing the traffic load in mobile communication system is disclosed. A static traffic load warning line A', a dynamic warningline A and buffer line P are set up in each small region in system. When local traffic load is higher, the mobile station is switched from the small region with higher traffic load to the one with lower traffic load while the A' is relatively regulated to switch excess load out. Its advantages are high switching efficiency and stability.

Description

technical field [0001] The invention relates to a load balancing method in a mobile communication system, in particular to a handoff method of traffic in the mobile communication system. Background technique [0002] In a mobile communication system, according to the load of each cell in the system, it is necessary to switch a certain number of mobile stations in a busy cell to a cell with a relatively light load. In the GSM (Global System for Mobile Communications) system, a method of equalizing the traffic volume is stipulated. In this method, the MSC (Mobile Switching Center) in the system knows the status of each cell to which it belongs through the signaling RESOURCE REQUEST and RESOURCE INDICATION of the A interface. The load situation, by measuring the degree of congestion, initiates the process of candidate switching. Since there are many cells carried by the MSC, the disadvantage of this is that the statistical work of the MSC is quite heavy, and because the signal...

AI Technical Summary

Problems solved by technology

However, in order not to waste channel resources, the "handover rule" may be more stringent, for example, handover is only required when there is no channel available for access in the cell

When users are concentrated on a certain occasion, doing so will lead to local network congestion, and some congested cells cannot be handed over because neighboring cells cannot meet the "cut-in rule", and as a result, users in these cells cannot access the network

Even if there is no complete congestion, the back and forth movement of the mobile station makes each cell alternately satisfy the "cut-out rule" and "cut-in rule", resulting in frequent back and forth switching

[0004] The reason for this phenomenon is not only that the "cut-out rule" is relatively strict, but also because the "cut-out rule" of each cell cannot be adjusted dynamically, so the absolute congestion level of the cell is actually considered, but sometimes it is caused by adjacent cells. It is also relatively congested. While reducing the load of the local cell, it increases the burden of neighboring cells, which is equivalent to ineffective for the entire network.

Moreover, only one mobile station is switched out at each switchover, which is relatively inefficient.

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