Channel allocation methods for half and full rate connections in GSM

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. Two members of the repacking family of schemes, repacking with perpetual half slot reservation and repacking with random reservation, are found to be the fairest in terms of blocking probability, and have the highest network utilisation (efficiency). However, the best fit scheme, while being somewhat less efficient and fair, is simpler to implement and does not incur voice dropouts related to intracell handover