Intelligent control of the transmission power in cellular phones using fuzzy logic

P. Melin, E. Zamudio, O. Castillo
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引用次数: 1

Abstract

In this paper is proposed a proposed control system for optimising the transmission power in cellular phones. As the mobile station moves toward the edge of a cell, the cell's base station notes that the signal strength is diminishing. Meanwhile, the base station in the cell the mobile station is moving toward (which is listening and measuring signal strength on all frequencies, not just its own one) sees the phone's signal strength increasing. The two base stations coordinate with each other, and at some point, the phone gets a signal on a control channel telling it to change frequencies. This hand off switches the phone to a different cell, which receives the signal with a bigger intensity, so the next decrement of the transmission power will be the lower possible without risking the quality of the transmission. Nowadays the central cellular controls the transmission power on the mobile station, on intervals of 4 dbs to increase or decrease it, so the final power always is above or under the required power.
基于模糊逻辑的手机发射功率智能控制
本文提出了一种优化蜂窝电话传输功率的控制系统。当移动基站向小区的边缘移动时,小区的基站注意到信号强度正在减弱。与此同时,移动基站所在的基站(监听和测量所有频率的信号强度,而不仅仅是自己的频率)看到手机的信号强度在增加。两个基站相互协调,在某一时刻,手机会收到控制频道的信号,告诉它改变频率。这个手柄会将手机切换到另一个接收信号强度更大的蜂窝,因此下一次传输功率的衰减将在不影响传输质量的情况下尽可能低。目前,中央蜂窝控制移动站的发射功率,每隔4 db增加或减少一次,因此最终功率总是高于或低于所需功率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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