NDLI: Distributed strategies for minimum-latency cooperative retransmission in wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Lixiang Xiong Libman, L. Guoqiang Mao
Copyright Year	2009
Description	Author affiliation: School of Information Technologies, University of Sydney, NSW 2006, Australia (Libman, L.) \|\| School of Electrical and Information Engineering, University of Sydney, NSW 2006, Australia (Lixiang Xiong; Guoqiang Mao)
Abstract	We consider cooperative retransmission strategies in wireless networks, where the retransmission of a failed frame is handled not by the original source but rather by common neighbors overhearing the transmission. The majority of existing literature in this space focuses on opportunistic mechanisms for choosing a single “best” neighbor, with a goal of minimizing the number of required (re-)transmissions. However, the coordination overhead of such mechanisms renders them unsuitable in general for scenarios involving delay-critical control or sensing applications, where the delivery latency, rather than number of retransmissions, is the dominant performance criterion. Accordingly, we study a distributed uncoordinated setting, where each neighbor that successfully overhears a frame decides independently whether to retransmit it in subsequent time slots, considering that multiple simultaneous such retransmissions will cause a collision. We employ a Bayesian approach to analyze the evolution of the system state view from the perspective of each cooperative neighbor, and derive a strategy of finding a sequence of retransmission probabilities for every neighbor in each time slot to minimize the expected delivery latency. We demonstrate for a wide variety of scenarios that this strategy achieves a significantly lower expected latency than either traditional retransmission or two-hop routing to the destination.
Starting Page	530
Ending Page	537
File Size	479648
Page Count	8
File Format	PDF
ISBN	9781424444885
ISSN	07421303
DOI	10.1109/LCN.2009.5355182
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-20
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless networks Delay Australia Computer networks Information technology Bayesian methods Fading Routing protocols State feedback Government
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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