NDLI: A general class of throughput optimal routing policies in multi-hop wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Naghshvar, M. Zhuang, H. Javidi, T.
Copyright Year	2009
Description	Author affiliation: Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92093 USA (Naghshvar, M.; Zhuang, H.; Javidi, T.)
Abstract	This paper considers the problem of routing packets across a multi-hop wireless network while ensuring throughput optimality. One of the main challenges in the design of throughput optimal routing policies is identifying appropriate and universal Lyapunov functions with negative expected drift. The few well-known throughput optimal routing policies in the literature are constructed using simple quadratic or exponential Lyapunov functions of the queue backlogs and as such they do not use any metric of closeness to the destination. Consequently, these routing policies exhibit poor delay performance under many network topologies and traffic conditions. By considering a class of continuous, differentiable, and piece-wise quadratic Lyapunov functions, this paper provides a large class of throughput optimal routing policies. The proposed class of Lyapunov functions allow for the routing policies to control the traffic along short paths for a large portion of state-space while ensuring a negative expected drift, hence, enabling the design of routing policies with much improved delay performance. In particular, an opportunistic routing policy with congestion diversity is proved to be throughput optimal.
Starting Page	1395
Ending Page	1402
File Size	455037
Page Count	8
File Format	PDF
ISBN	9781424458707
e-ISBN	9781424458714
DOI	10.1109/ALLERTON.2009.5394513
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Network topology Wireless networks Spread spectrum communication Lyapunov method Traffic control Throughput Routing Cost function Relays Delay
Content Type	Text
Resource Type	Article

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