A medium access control protocol for UWB sensor networks with QoS support

Jicong Tan, Mun Choon Chan, Hwee Xian Tan, Peng Yong Kong, Chen Khong Tham

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Ultra-wideband (UWB) is a physical (PHY) layer technology that promises high transmission rates, as well as high resistance to noise and multipath effects. However, the impulse-based nature of UWB, coupled with its low transmission power, makes it difficult to enable efficient detection of the signals. Consequently, conventional carrier-sensing based MAC protocols cannot be used with a UWB PHY. In this paper, we propose SASW-CR - a Slotted Aloha MAC protocol for UWB networks with Sliding contention Window and Coperative Retransmissions, which provides QoS support without the use of carrier sensing. SASW-CR utilizes the slotted-Aloha technique to avoid carrier sensing and reduce packet collisions. In addition, it makes use of differentiated contention windows to provide varying classes of QoS for different traffic classes. A cooperative retransmission technique is also introduced to improve the overall traffic throughput and reduce end-to-end delay. The efficacy of our protocol is demonstrated through simulations.

Original languageBritish English
Title of host publication33rd IEEE Conference on Local Computer Networks, LCN 2008
Pages289-296
Number of pages8
DOIs
StatePublished - 2008
Event33rd IEEE Conference on Local Computer Networks, LCN 2008 - Montreal, AB, Canada
Duration: 14 Oct 200817 Oct 2008

Publication series

NameProceedings - Conference on Local Computer Networks, LCN

Conference

Conference33rd IEEE Conference on Local Computer Networks, LCN 2008
Country/TerritoryCanada
CityMontreal, AB
Period14/10/0817/10/08

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