Cell reselection under network control
We currently only implement "Normal MS Control" known as NC0. This means that the MS performs autonomous cell reselection, like in GSM idle mode. Unlike GSM, this is the case even while TBF are active.
GPRS specifies NC1 and NC2 methods. In the latter, the cell re-selection is under network control; The MS Sends measurement reports to the network, and the network instructs the MS to switch.