13th May 2009 at 05:06
#56969

Bhupendra

Guest

Yea TIMZ, u r right..

i got the answer also…

in 22 ARFCN, Say 10 ARFCN will be used for BCCH, 1 as Guard Band and remaining 11 for TCH.

If we take hopping in 3/3/2 configuration BTS then 3 ARFCN will be used for BCCH TRXs (1 per sector) are non hopping & remaining 5 TRX will be in hopping mode. For these 5 TRX there will be 5 frequencies at a time, these 5 frequencies should not be adjacent so keeping gap of atleast 1 ARFCN the total requirement is 10 ARFCN.

That is the reason why we can not go beyond 3/3/2 configuration with 4.4 MHz spectrum (in hopping case).

Pls revert if i m not correct…

Thanks

Bhupi