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为解决天津移动通信网中某些地区存在的高话务量溢出而影响全网通信质量和传输信道紧张的问题，提出了采用数模共用传输和引入微蜂窝扩容，使宏蜂窝与微蜂窝天线共用双重覆盖的方案，经实施取得了较好的效果。
In order to solve the problem of high traffic volume overflowing in some areas of Tianjin mobile communication network and affecting the whole network communication quality and transmission channel tension, the paper proposes to adopt the digital-analog shared transmission and the introduction of micro-cell capacity expansion so that the macro and micro-cell antennas Sharing double coverage of the program, the implementation has achieved good results.