Mobility

Multidimensional Markov models for the cross-layer design of multi-rate wireless systems using the effective capacity function

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Executive Summary

In this paper, a novel framework for the cross-layer design of wireless networks combining Adaptive Modulation and Coding (AMC) at the physical layer with an Automatic Repeat reQuest (ARQ) protocol at the data-link layer is proposed. In order to achieve this goal, the physical-layer service process is first modeled as a multidimensional finite-state Markov chain. Then, based on this multidimensional Markov model, the QoS performance at the data-link layer is characterized using the effective capacity approach. Queueing analysis using this effective capacity function is finally used in a cross-layer design approach aiming to satisfy the required average packet loss probability constraint by maximizing the average throughput of the system.

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