GSM C/I value

**ChristopherAlbertini** · 2011-01-31, 10:55 PM

Dear All,

What is the acceptable C/I value for radio network?

Can anyone help?

**Finetopix** · 2011-01-31 10:55 PM

**ivankokorin** · 2011-01-31, 11:16 PM

C/I

less than 9 - interference (at RxLev better than -85 dBm)

more than 9 medium

more than 12 well

more than 15 superbly

**ChristopherAlbertini** · 2011-01-31, 11:30 PM

Thank you ivankokorin

**ravikant339@gmail.com** · 2011-03-03, 09:08 PM

Originally Posted by ChristopherAlbertini

Dear All,

What is the acceptable C/I value for radio network?

Can anyone help?

C/I SHOULD ALWAYS BE GREATER THAN 9DB

**kevin_h811** · 2011-03-04, 01:48 PM

For our network,

C/I more than 9dB for Outdoor and more than 12 dB for Indoor ...

Regards//

**rohit.jain482** · 2011-03-05, 02:51 PM

Originally Posted by ChristopherAlbertini

Dear All,

What is the acceptable C/I value for radio network?

Can anyone help?

C/I should be >9db for hopping system and
C/I should be >12 db for non-hopping system

**zeldalcl** · 2011-07-25, 02:41 PM

why GSM C/I greater than 9dB?

**s52d** · 2011-07-25, 02:59 PM

Originally Posted by zeldalcl

why GSM C/I greater than 9dB?

GMSK needs few dB, then add 6 dB to compensate for fading.
Anyhow, this is for TCH layer: BCCH layer and EDGE layers needs more.
BCCH must provide decent coverage in neighbour cells in order for handovers
to work properly, EDGE needs better C/I in order to use higher throughput coding.

So, while 9/12 dB is minimum planning value, in real life we try to have as good as
possible C/I for all terminals. Even those 90% who are indoors and for whom
classic radio coverage predictions are not OK.

BR
s52d

**zeldalcl** · 2011-07-25, 06:10 PM

Dear all!
I want to know exactly how to calculated to 9dB?so as other value ...
Any Body, who have more doccument about this, please share to me.

Brs!