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Topic Title: why SD drops reduce by shifting SDCCH from hopping to BCCH channel in GSM?
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Created On: 10 March 2010 10:17 AM
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 10 March 2010 10:17 AM
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Posts: 2
Joined: 10 March 2010

I have been working as an RF engineer. i have observerd some issues where CSSR is affected due to SD drops. i tried to shift SDCCH from hopping trx to BCCH trx and things got improved.
But i am just curios to learn reasons. the reason which is in my knowledge is that sometimes BCCH radio enviroment gets clean and hopping suffers with interference.
Bandwidth of SDCCH is 8 times less then TCH so it is more sensitive to interference.
but i think there must be some other reasons. Please share your knowledge on this. thanks.

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