- This topic has 2 replies, 1 voice, and was last updated 20 years, 8 months ago by
.
-
Posts
-
could you please any one let me know where the BSIC is used
BSIC: Stands for Base Station Identity Code which is
transmitted on the SCH. It is expressed as:
NCC = National Color Code of PLMN. Numeric 0 – 7.
BCC = Base Station Color code. Numeric 0 – 7.
Each operator in a country is assigned one NCC value n to
ensure that the same NCC is not used in adjacent PLMNs. The
purpose of the BSIC is to distinguish between cells with the
same carrier frequency but from different clusters. It can also be
used to distinguish between cells from different operators at the
border between two countries. It is essential for the locating
algorithm that the correct neighboring cells are evaluated.Actually, an operator in a country can use any BSIC/NCC and should do so except where there is possibility of overlap with co-channel border PLMNs.
You will have to adjust the ‘NCC permitted’ or ‘PLMN permitted’ (whatever its called in your BSC)parameter accordingly at those border cells.
You can use the all NCCs including those of any other non-cochannel operator in the same region too without any problem.
If you use the same single NCC everywhere in your network then you are likely to get co-BCCH co-BSIC neighbour of neighbour problems that appears to cause lots of HO failures.
The NCC part of the BISC is one of the most misunderstood parameters. It is only used to prevent mobiles in co-channel PLMN border regions reporting BCCHs that don’t belong to the home network.
- The forum ‘Telecom Design’ is closed to new topics and replies.
