Performance analysis of circuit allocation schemes for half and full rate connections in GSM

GSM uses a TDMA structure with eight slots-per-frame to support speech and data transmission. This paper considers five circuit allocation schemes for half and full rate connections in GSM. Analytic numerical methods are used to investigate each scheme's blocking probability behaviour. The analytic solution is based on a reduction of the state space to a manageable size. All three repacking family schemes incur low blocking probability and repacking with perpetual half slot reservation is the fairest scheme.