简述 LTE网络中 TAC 规划的基本原则
1、 大小原则(不能过大也不能过小)
2、连续区域覆盖原则,即跟踪区规划在地理上应为一块连续的区域
3、利用规划区域的山体、河流等作为跟踪区边界
4、尽量不要将位置区边界划分在话务量高的区域
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