On Fri, Nov 20, 2009 at 1:49 PM, Harald Welte laforge@gnumonks.org wrote:
On Wed, Nov 18, 2009 at 10:37:37PM +0000, 246tnt@gmail.com wrote:
When making a call from my test phone (a T610 here), I see the BSC assigning more than one channel ...
yes, this is due to the fact that we do not check for the request reference.
when your MS transmits the first RACH burst, it selects a particular request reference. all retransmissions carry the same request reference.
Nope, they dont. In gsm 04.08 3.3.1.1.1 about the RACH bursts they says :
"a random reference which is drawn randomly from a uniform probability distribution for every new transmission."
And that's why I observe, the "ra" is different for each try. But those attemps are _very_ close to each other, not time for the BSC to respond.
Sylvain