关于诺基亚切换问题

如题。
现有一个小区900和1800共CI，切换参数设置如下LAR：-75，LER:-85,NBL:0,LSEG:30,为什么在900半速率开满拥塞的情况，占用1800的用户还是只有4个的样子，忘高手解答。

NSN的设备？
共CI？是共站同方向吧
你说的这几个参数
LAR、LER貌似是1800M和1900M之间的参数
LSEG这个参数是对数据网起作用的参数
NBL这个参数对话音网作用的作用未知


如果是单纯的900站开了半速率且拥塞的情况
首先看C1C2的设置情况，优先使MS占用1800基站
查看该处基站900站和1800站的实际覆盖情况，是否开启伞状切换，调整伞状切换的相关参数，做好话务均衡

希望能帮到你

non BCCH layer access threshold (LAR)

With this parameter you define a threshold value for the estimated downlink signal level on non-BCCH layer for a moving MS from BCCH layer to non-BCCH layer.
The exception is when the BCCH has been configured to GSM 1900 band in GSM800/GSM1900 Common BCCH cell. In that case you define a threshold value for the downlink signal level on GSM 1900 layer for allowing access to GSM 1900 BCCH layer.

non BCCH layer exit threshold (LER)

With this parameter you define a threshold value for the measured downlink signal level on non-BCCH layer for a moving MS from non-BCCH layer to BCCH layer.
The exception is when the BCCH has been configured to GSM 1900 band in GSM800/GSM1900 Common BCCH cell. In that case you define a threshold value for the measured downlink signal level on GSM 1900 layer for a moving MS from GSM 1900 BCCH layer to GSM 1800 layer

non BCCH layer offset (NBL)

With this parameter you define whether the predefined offset margin is used when evaluating the signal level of the non BCCH layer.

BTS load in SEG (LSEG)

With this parameter you determine the load limit for a BTS. Is used in controlling the load distribution between BTSs in a segment.