在当前的GSM双频网络中,为使1800MHz小区能合理吸收话务,往往设置1800MHz小区为优先占用,从而导致1800MHz小区在话务高峰时容易拥塞。为了缓解拥塞,又不得不使用更多的半速率或提高小区接入门限,结果造成话音质量变差、用户感知度下降,1800MHz小区的覆盖不连续。如何实现在话务高峰合理吸收话务的同时,在话务闲时保持覆盖连续,本文创新性地提出了设置主从小区和DCS1800覆盖范围动态调整的方法,为当前双频网络优化提供参考。 In the current GSM dual-band network, 1800 MHz cells are often preempted to make 1800 MHz cells absorb traffic reasonably, leading to 1800 MHz cells being easily congested at traffic peak. In order to alleviate the congestion, they also have to use more half-rate or increase the cell access threshold. As a result, the voice quality deteriorates, the user perception decreases, and the coverage of the 1800 MHz cell is discontinuous. How to achieve traffic peak at the same time reasonable to absorb traffic at the same time in the idle to maintain coverage, this paper innovatively set the master and slave cells and DCS1800 coverage dynamic adjustment method for the current dual-frequency network optimization provide a reference.