Adaptive borrowing of ordered resources for the pan-European mobile communication (GSM) system

The authors analyse a new channel borrowing technique, for mobile radio, based on the queueing theory concept of the ordered hunt. This technique allows the borrowing of ordered resources in an adaptive way depending on the traffic situation. For a specific traffic load, a cell can give to its surrounding cells a calculated number of resources. The scheme can be implemented in a slow frequency hopping-TDMA system like GSM. The performance of this procedure is evaluated by means of simulation on a 7-cell cluster system with characteristics similar to the GSM. Simulation results show a reduction in the blocking probability with respect to the fixed channel assignment.