FREQUENCY PLANNING PARAMETERS

BCCH – Broadcast Control Channel
BCCH frequency planning is done for each sector in the site individually. The BCCH frequency must be determined so that the same frequency of some other site does not interfere with the planning site (Co-channel interference) and the adjacent higher frequency and the lower frequency also should not be used in a near site that can be in a position to interfere the given site (Adjacent channel interference).

HSN – Hopping Sequence Number
It is one of 4 input parameters to the GSM hopping sequence generator algorithm. Range of HSN is 0 to 63. HSN = 0 means the hopping is in cyclic mode.

 MAIO - Mobile Allocated Index Offset
The Mobile Allocated Index allows determining the correct line in the Mobile Allocation look up table to find the corresponding ARFCN .The MAIO is selectable for each timeslot and each TRX separately. It is constant on the TRX but it changes between the frame units.

 BSIC – Base Station Identification Code
BSIC Channels are to identify each station and sub stations. It can be represented in 2 codes.
NCC (Network Color Code) – Is represented in 3 bit binary form. Therefore it the numbers are from 0 to 7.
BCC (Base station Color Code) – It’s also in 3 bit form. Can be used 0 to 7.

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