Depending on the amount of data to be transfered in the uplink the network will automatically configure the ongoing data stream for either 3+2 or 4+1 operation.
Mobiles of this class can use 4 timeslots in downlink direction and 2 timeslots in uplink direction with a maximum number of 5 simultaneous timeslots. The most comment GPRS/EDGE mobile station class today seems to be multislot class 10.
And fourth, the reception conditions experienced by the mobile. Third, the network has to match the abilities of the mobile device. Second, the capability of the mobile, or it’s multislot class. Usually, voice calls take precedence over GPRS traffic and in case not enough time slots are available for both, some GPRS timeslots are sacrificed for voice calls.
First, the capacity available in the cell. The upload and download speeds that can be reached with a GPRS and EDGE mobile phones depends on a number of factors.
