基于TA的GSM网络过覆盖小区识别及天线倾角优化-电子与通信工程专业论文.docxVIP

摘要 目前，GSM 网络技术正在飞速的发展，网络性能质量已经成为移动通信运营 商提高竞争力的重要方式。但是随着网络规模的不断扩大、网络结构的不断复杂， 网络优化工作的难度越来越大，需要测试的路段大量增加，并且测试的频率也需 要大幅度提高，如此才可能较早的发现覆盖问题，并予以处理。采取这种盲目的 大规模的测试，必然会耗费大量的人力物力，即便如此也很难及时发现基站的覆 盖问题。为了高效的发现问题并给出优化措施，我们就需要一套方法，该方法可 以高效的识别过覆盖小区，并且从天线倾角方向给出优化建议。 我们通过 OMC 话统数据与工程参数，分析比较基站实际覆盖的距离与 TA 的 大小，如果 TA 距离大于小区覆盖范围，则为过覆盖小区，为了提高准确性，我 们还需要关联小区的 KPI 指标，主要关注掉话率（TCH 掉话率）、切换率失败率、 上下行质量切换率、上下行电平切换率、距离过大切换率、小区话务量等，并且 进行地理话展示，直接的一目了然的判断是否过覆盖。 对于判断的越区覆盖，文章主要从天线倾角的角度给出优化建议。 关键词： GSM 过覆盖 TA 天线俯仰角 网络优化 话统数据 MapInfo Abstract At present ， GSM network technology is the rapid development of mobile communication operators is an important way to improve the competitiveness of network performance and quality. With the continuous expansion of network scale， and the increasing complexity of network structure，Network optimization work increasingly difficult，and the sections of the tests need to be increased， and the frequency of the tests also need to be substantially improved，so that the possible discovery earlier coverage problem，and be dealt with. To take such a large-scale test of the blind，is bound to spend a lot of human and material resources，but even so it is difficult to timely discovery of cell coverage problem. In order to efficient discovery and optimization measures is given in a timely manner，we need a set of investigation method，the method can efficiently find problems and gives reasonable optimization suggestions. By OMC and engineering parameters，we compare cell coverage distance with the size of TA， TA distance is greater than the cell coverage，it is a over coverage cell， in order to improve accuracy，We also need to associated with cell KPI indicators， the main concern of call-drop rate (TCH call drop rate)，switch failure rate， uplink and downlink level-quality switching rate，uplink and downlink Rx-lever switching rate， Long-distance switching rate，cell traffic，and geographic display，directly glance to determine whether over-coverage. This article mainly optimizate the