Distributed Optimization in Wireless Networks Using Broadcast Advantage

Cui, Tao and Chen, Lijun and Ho, Tracey (2007) Distributed Optimization in Wireless Networks Using Broadcast Advantage. Technical Report. California Institute of Technology, Pasadena, CA. [CaltechCSTR:2007.002]

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Abstract

In this paper, we study cross-layer design for multicasting in wireless networks by exploiting broadcast advantage. With network coding, a distributed subgradient algorithm for joint congestion control, session scheduling, and network coding is proposed, which requires a centralized scheduling algorithm in general. Under the primary interference model, we find that any valid link schedule corresponds to a hypergraph matching. To solve the scheduling problem distributedly, local greedy, randomized, and hybrid algorithms are proposed. We also modify the randomized algorithm into a constant-time algorithm. With random network coding, we obtain a fully distributed cross-layer design. Our experimental results show promising throughput gain by using our proposed framework, in some cases with less complexity than cross-layer design without broadcast advantage. Lastly, we also extend our framework to the case without network coding.

EPrint Type:	Monograph (Technical Report)
Subjects:	All Records
ID Code:	567
Deposited By:	Tracey Ho
Deposited On:	01 June 2007
Record Number:	CaltechCSTR:2007.002
Official Persistent URL:	http://resolver.caltech.edu/CaltechDEMO:2007.002
Usage Policy:	You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.

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