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TD系统中为什么需要基站间同步,其同步精度是怎么规定的 (进入论坛模式)
提问者:lulu349
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提问时间:2011-10-10 15:53
TD系统中为什么需要基站间同步,其同步精度是怎么规定的
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应该是提高切换成功率吧!
上下行时分,所以需要各小区同步,否则相互干扰
TDD方式下避免上、下行间产生干扰。精度要求参见3GPP 25.123
7.2 Cell synchronization accuracy
7.2.1 Definition
Cell synchronization accuracy is defined as the maximum deviation in frame start times between any pair of cells on the same frequency that have overlapping coverage areas.
7.2.2 Minimum requirements
The cell synchronization accuracy shall be better than or equal to 3 us.
7.2 Cell synchronization accuracy
7.2.1 Definition
Cell synchronization accuracy is defined as the maximum deviation in frame start times between any pair of cells on the same frequency that have overlapping coverage areas.
7.2.2 Minimum requirements
The cell synchronization accuracy shall be better than or equal to 3 us.
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