A multi-rate resource control (MRRC) scheme for wireless/mobile networks

In this paper, we propose and study a multi-rate resource control (MRRC) scheme for non-real time data applications in mobile cellular networks. The MRRC scheme adapts to dynamically changing system load by adjusting resource assignments for mobiles. The MRRC scheme consists of four major techniques: 1) variable-rate admission control policy; 2) soft handoff procedure; 3) resource assignment prioritization based on mobile´s location, non-handoff versus handoff zone; 4) handoff prioritization by queuing handoff requests. We evaluate the blocking probability and the forced termination probability. In addition, we study the effect of handoff to cell area ratio (HTCR) on MRRC performance. A streamlined analytical model is introduced to evaluate the MRRC scheme for the 2-cells case. Numerical results are presented for the 2-cells case; simulation results are presented for the 10-cells case. Our results show that the MRRC system achieves significant gain over the conventional single rate system in terms of the blocking probability and the forced termination probability