Teletraffic analysis of wireless mobile communication systems with link adaptation

In this paper, the performance of wireless mobile communication systems with link adaptation is evaluated by means of a teletraffic analysis. To our knowledge, no similar analysis considering link adaptation exists in the literature. In particular, mathematical expressions for the handoff call arrival rate, the intra-cell handoff failure and the forced termination probabilities are derived. Half- and full-rate vocoders are considered and a link quality-aware dual channel reservation (LQA DCR) scheme is proposed. In LQA DCR, preference is given to users with good link quality because they require fewer resources than users with bad link quality. Numerical results show that the proposed LQA DCR scheme effectively increases system capacity.