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14th June 2005 at 16:38 #41597shaguniGuest
Can any body tell me if the BCCH time slots are not alocated unless the other TRX time slots are full is conforming GSM protocol or not. In this case even in the case of hand over the BCCH time slots are not alocated if the other TRX time slot quality is of bad quality (interference etc.)16th September 2005 at 11:24 #41598M.ThyagarajanGuest
this is because the priority has been set for TCH TRX(TRX priority).
this means that it will choose the TCH as priority.this can be used to improve drop call rate.16th September 2005 at 15:23 #41599alexanderGuest
you can set TRX priority parameter, so you can set if new TCH should be allocated from BCCH TRX or allocated from non-BCCH TRX.
http://www.dx200.biz16th September 2005 at 20:51 #41600BoonyoooGuest
In Siemens this algorithm is called “Prefered TRX(Call Policy)”, If you set it to DATA_CALL_ON_BCCH for CS calls you will first allocate the non-BCCH TRXs and only use BCCH TRX for CS calls when there is not idle timeslot on not BCCH.17th September 2005 at 13:04 #41601BokoGuest
In Alcatel you even can define Tch-Voice preferably onthe TRX with the higest possible number and Tch-Packet on the TRX with the smallest possible.
But for siemens:
We notice that data call on BCCH is not very usefull, it is better to have data only on BCCH and just to watch “intracell HO due to multislot calls”
Boko22nd October 2009 at 06:57 #41602ArpanGuest
Can anybody tell what is the parameter name to set TRX Priority for allocation in Ericsson System
Thanks & Regards