Call admission control in cellular multiservice networks using virtual partitioning with priority

Abstract

With the tremendous growth of mobile users and the emergence of multimedia applications, an appropriate call admission control policy is expected to make efficient use of scarce wireless resource while supporting different services with diverse quality-of-service requirements. Also, the popularity of microcells makes the actual traffic load of a given cell deviates from the expected load more easily. Furthermore, handoff calls are normally given priority over new calls to reduce forced termination probability. Virtual partitioning with priority (VPP) is proposed to fulfil the aforesaid goals, whether the traffic is stationary or non-stationary. An approximation method is derived to calculate performance measures of interest. Numerical results show that VPP achieves a similar high multiplexing gain as complete sharing (CS) when all classes are behaving as expected. VPP also realizes a similar isolated effect as complete partitioning (CP) in regions of practical interest. It is also shown under non-stationary scenarios, VPP outperforms trunk reservation (TR).