- This topic has 8 replies, 1 voice, and was last updated 7 years, 2 months ago by JAGGU.
13th June 2011 at 07:14 #66576alphachildGuest
Hello all. Please what is best if you have 4 TRXs, with 4 SDCCH/8. Should all SDs be configured on the BCCH TRX? What is the benefit of this? What happens if this BCCH TRX go down or is unavailable will the SDs be shifted automatically?
I work on ALCATEL EQUIPEMENT13th June 2011 at 07:59 #66577pixGuest
if bcch trx goes down, then its logical configuration (all the 8 TS) are shifted to another TRX.
So my recommendation is to have 2 SDCCH on the BCCH TRX, and then 1 SDCCH on 2 other TRXs.
The last TRX will have no SDCCH, in order to favour it for PDCH Allocation (the idea is to have 8 consecutive TCH/PDCH on the same TRX)
pix13th June 2011 at 09:37 #66578OptimGuest
Is there any Parameter (switch) to control this reconfiguration when BCCH TRx goes down? or its a default by standard?
Thanks,13th June 2011 at 11:06 #66579pixGuest
i think there is no parameter to tune this. What would you like to tune actually ? Because shifting the BCCH to a trx that’s “up” is definitely something you want enabled !
pix13th June 2011 at 11:27 #66580OptimGuest
I don’t actually want to tune anything, but just wanted to know if this can be disabled by any parameter, so that one can have this in mind if in the event that logical channels don’t move to the other TRx somehow.
regards,13th June 2011 at 19:03 #66581pixGuest
but if the bcch doesn’t shift to another trx, then the cell is down.
Are you thinking about another scenario ?15th January 2014 at 07:22 #66582AliGuest
Kindly let me know if this is necessary to not assign any SD in last TRX ?? and what about the Packet Data.. how we normally assign it to BCCH and Hopping TRX in 4/4/4 configuration ?? please help15th January 2014 at 18:35 #66583LemaureGuest
to avoid having CCH failures or drops it’s recommanded to have your SD channels on the BCCH assuming that you have a very clean BCCH plan27th July 2015 at 14:49 #66584JAGGUGuest
hI ALL WHAT IS THE BEST ASSIGNMENT OF bcch AND SDCCH IN 3:3:3 CONFIGURATION