Asymptotic delay analysis for cross-layer delay-based routing in ad hoc networks

Philippe Jacquet*, Amina Meraihi Naimi, Georgios Rodolakis

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper addresses the problem of the evaluation of the delay distribution via analytical means in IEEE 802.11 wireless ad hoc networks. We show that the asymptotic delay distribution can be expressed as a power law. Based on the latter result, we present a cross-layer delay estimation protocol and we derive new delay-distribution-based routing algorithms, which are well adapted to the QoS requirements of real-time multimedia applications. In fact, multimedia services are not sensitive to average delays, but rather to the asymptotic delay distributions. Indeed, video streaming applications drop frames when they are received beyond a delay threshold, determined by the buffer size. Although delay-distribution-based routing is an NP-hard problem, we show that it can be solved in polynomial time when the delay threshold is large, because of the asymptotic power law distribution of the link delays.

Original languageEnglish
Article number90879
JournalAdvances in Multimedia
Volume2007
DOIs
Publication statusPublished - 2007

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