- This topic has 28 replies, 1 voice, and was last updated 11 years, 3 months ago by Valerijs.
7th December 2005 at 06:51 #42698joodGuest
you almost right, BUT There is a possibility to integrate HO based on quality… inner >> complete OR ol >> ul . By two ways:
1) Bad quality urgency HO, from BTS point of view (UL quality) (not the considered DL QU reported by MS), & you can prohibit it for certain area (cell center) by BQOFFSET.
2) HO due to consecutive intra QU HO at inner, SO when threshold consecutive intra HO detected >>>>> HO to complete.
It depends on the function & facilities provided by your locating algorithm.7th December 2005 at 07:07 #42699BokoGuest
Can you specify the vendors which have such algorithms as Siemens do not have such. I consider writing a change request for this and it will be very helpful for me if I have some knowedge about other vendors algorithms
Boko7th December 2005 at 12:25 #42700joodGuest
Ericsson20th December 2005 at 15:34 #42701TagGuest
hi guys ,
My side jux covert to CBCCH for certain sites,However some of the sites seem to have increase in drop calls,
We suspect that the non-bcch layer offset is giving the problems as it is not a self regulated value
Cheers22nd December 2005 at 07:05 #42702joodGuest
chek the parameter of band (threshold + hysterisis) use the default parameter.
before that define the resoan of drop from OMC-R (intra HO, Qu,….etc)22nd December 2005 at 12:11 #42703TagGuest
Can u tell more abt it?
Thanks22nd December 2005 at 15:18 #42704BokoGuest
what vendor?22nd December 2005 at 15:35 #42705TagGuest
Nokia BTS24th December 2005 at 06:55 #42706joodGuest
#use the default parameter provided by your vendor for (multi band consentric featura CBCCH).(band-threshold, band-hyst, neighbor list,band periority,HCS & C2,…etc)
#chek HW (syncronization).
#chek your SDCCH dimensioning on 900 band.27th December 2005 at 15:10 #42707TagGuest
the parameters u guys adviced..yes we r using the default parameters..beside this what else sld i take note…28th December 2005 at 06:18 #42708joodGuest
in acount of different vendor & Tech, we are restricted to disscus on general standard & specification.29th December 2005 at 14:55 #42709TagGuest
Able to email to me?31st March 2009 at 21:05 #42710ArunGuest
We also recently shifted to CBCCH and found that call drop rate is increasing post CBCCH implementation. Presently we are verifying the physical antenna specification for 1800 and 900 bts so that rf enviroment should be similar to both layers. We have observed that after CBCCH traffic is shifted to GSM layer to DCS layer. As we had better RF enviroment for DCS than GSM this can be one of the reason. Though we are also in process of anaysis of core reason of CDR increase25th November 2009 at 12:23 #42711ValerijsGuest
Single band repeaters ?