Co BCCH-TCH

[justdream]

Frineds,
can you tell me from your experience, what's the effect of having Co BCCH-TCH?
as all people here just care about Co BCCH-BCCH and Co TCH-TCH...

so pleas ehelp me to understand in more details the effect of Co BCCH-TCH????

[RF engineer]

Frineds,
can you tell me from your experience, what's the effect of having Co BCCH-TCH?
as all people here just care about Co BCCH-BCCH and Co TCH-TCH...

so pleas ehelp me to understand in more details the effect of Co BCCH-TCH????

This problem come from the frequency planning strategy .
no dedicated band for BCCH and TCH separately so it makes high interference on both side especially from BCCH because they are not using DTX and Power control so all time TCH frequency with the same BCCH frequency is interfered and make high call drop and SDCCH drop,TCH congestion, Handover failure and so on.
BR
RF

[justdream]

Thanks, but I would like to clarify that I'm speaking about Co BCCH-TCH neighbours which menas

two sites shooting to each ohters and defined as neighbours while one of them use BCCH 'x1' and the facing one use TCH also 'x1'

[ghassen]

Thanks, but I would like to clarify that I'm speaking about Co BCCH-TCH neighbours which menas

two sites shooting to each ohters and defined as neighbours while one of them use BCCH 'x1' and the facing one use TCH also 'x1'

i think that this frequency planning problem two sites with same frequency one for bcch and the other with tch and they have same bsic but power is too much that the bts or msn cannot distinguish between tch and bcch this from my point of you i don't know if other share the same idea because i've never seen something like that

[justdream]

No, I didn't say that they have the same BSIC,
they are two neighbour sites, one use the same BCCH 'x1' the ohter use 'x1' as TCH

[ghassen]

No, I didn't say that they have the same BSIC

did you mean that BCCH and TCH frequencies are overlaping ???
are these two channel on the same trx and same site or comming from diferent sites? plz answer me

[justdream]

That's what I mean...and sorry if I wasn't clear

[ghassen]

That's what I mean...and sorry if I wasn't clear

try to find out something about power control sincerely I've never seen something like that

[justdream]

try to find out something about power control sincerely I've never seen something like that

Please tell me exactly: what do you want regarding power control?

[ghassen]

Please tell me exactly: what do you want regarding power control?

one site with bcch at the frequency number 48 and the other site with tch on 48 but the power of the tch is too high and then it comes that the tch is overlaping with bcch ms cannot destinguish between both