hi Michel MATALATALA
first u have to clarifty that it is radio congestion is of siganllling or traffic.
if it is traffic congesion than u can give more timeslot to traffic (TCH)by reducing timeslot for signalling(SDCCH).
if it is signallliing congestion than u can give more timeslot to SDCCH by reducing TCH timeslot.
can u give some guidance on R2 signalling.how it naming what is structure and protocol it is using