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中国移动3G系统TD-SCDMA在全国范围内已大规模部署,完成了全国县级以上城市和重要乡镇的覆盖。随着中国4G业务的快速发展,中国移动TD-LTE的网络规模也在逐步扩大。在未来较长的一段时间内,TDSCDMA与TD-LTE将呈现共存一网,共同发展的局面。从节省运营商投资、方便网络运营的角度考虑,今后TD-LTE和TD-SCDMA需要共站部署。虽然TD-LTE和TD-SCDMA技术都采用了TDD模式,具有较大的相似性,但其网络规划却不能沿用TD-SCDMA的方式。本文通过链路预算的方法,结合实测数据,对比分析了TD-LTE和TD-SCDMA网络的覆盖能力。对TD-LTE和TD-SCDMA基站共址时站距的设置提供了参考依据。
China Mobile’s 3G system TD-SCDMA has been deployed nationwide on a large scale and has covered the coverage of cities and important towns across the country at the county level. With the rapid development of China’s 4G business, the scale of China Mobile’s TD-LTE network is also gradually expanding. In the future for a long period of time, TDSCDMA and TD-LTE will show co-existence and common development. From the perspective of saving operators’ investment and facilitating network operation, TD-LTE and TD-SCDMA need to be deployed together in the future. Although both TD-LTE and TD-SCDMA technologies adopt the TDD mode and have similarities, their network planning can not follow the way of TD-SCDMA. In this paper, the method of link budget, combined with the measured data, comparative analysis of TD-LTE and TD-SCDMA network coverage. It provides a reference for the setting of TD-LTE and TD-SCDMA base station when co-located.