Cross-Layer Optimal Rate Allocation for Heterogeneous Wireless Multicast

Show simple item record Amr, Mohamed en_US Alnuweiri, Hussein en_US
date.accessioned 2009-12-27T06:16:32Z en_US
date.available 2009-12-27T06:16:32Z en_US
date.issued 2009-01-12 en_US
identifier.citation Mohamed, A., & Alnuweiri, H. (2009). Cross-layer optimal rate allocation for heterogeneous wireless multicast. Eurasip Journal on Wireless Communications and Networking, 2009 en_US
identifier.uri en_US
identifier.uri en_US
description.abstract Heterogeneous multicast is an efficient communication scheme especially for multimedia applications running over multihop networks. The term heterogeneous refers to the phenomenon when multicast receivers in the same session require service at different rates commensurate with their capabilities. In this paper, we address the problem of resource allocation for a set of heterogeneous multicast sessions over multihop wireless networks. We propose an iterative algorithm that achieves the optimal rates for a set of heterogeneous multicast sessions such that the aggregate utility for all sessions is maximized. We present the formulation of the multicast resource allocation problem as a nonlinear optimization model and highlight the cross-layer framework that can solve this problem in a distributed ad hoc network environment with asynchronous computations. Our simulations show that the algorithm achieves optimal resource utilization, guarantees fairness among multicast sessions, provides flexibility in allocating rates over different parts of the multicast sessions, and adapts to changing conditions such as dynamic channel capacity and node mobility. Our results show that the proposed algorithm not only provides flexibility in allocating resources across multicast sessions, but also increases the aggregate system utility and improves the overall system throughput by almost 30% compared to homogeneous multicast. en_US
language.iso en en_US
publisher Hindawi Publishing Corporation en
subject Heterogeneous Wireless Multicast en_US
subject Cross-Layer Optimal Rate en_US
title Cross-Layer Optimal Rate Allocation for Heterogeneous Wireless Multicast en_US
type Article en_US

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