Power overloading control method

Abstract

The invention discloses method for controlling power over loading. The method includes steps: when system over loading occurs, base station obtains current transmission power in each forward service channel; collecting parameters of reflecting quality of wireless link, and dividing link of each forward service channel into several levels based on the quality; the better of quality, the higher level is; based on the level of link of each forward service channel, setting up upper limit of transmission power for each channel, the higher level of the link, the larger difference between upper limit of transmission power and current transmission power will be setup. Thus, when system over loading occurs, the method guarantees normal telephony for better link first. Releasing bad link to moderate over loading situation effectively, the method lowers system rate of call failure.

Description

technical field The invention relates to a power overload control method, in particular to a forward power overload control method of a CDMA communication system. Background technique In a CDMA mobile communication system, a base station in a cell can simultaneously establish forward traffic channels with multiple mobile stations. Each forward traffic channel occupies a certain base station power to ensure normal communication. As the number of mobile stations in the cell increases, the total forward transmission power of the base station increases. When the total transmission power exceeds the predetermined rated power value of the base station, the base station equipment will work in a non-optimal state or even an abnormal state, and the forward transmission power cannot be guaranteed. The percentage of the pilot frequency to the total transmission power will cause problems such as coverage and handover, and will also increase the interference to the wireless environment ...

AI Technical Summary

Problems solved by technology

Although this method can prevent overloading, for a mobile station with a good forward link, its transmit power on the forward traffic channel is low, so the increase of its transmit power is limited at this time. The call drop of the mobile station increases the call drop rate of the system, and because its transmission power is very small, it does not make much contribution to reducing the overload of the system after the call drop, so it cannot effectively relieve the overload state

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