NDLI: A Framework to Provide a Bidirectional Abstraction of the Asymmetric Network to Routing Protocols

Content Provider	IEEE Xplore Digital Library
Author	Bali, V. Rathore, R.S. Sirohi, A. Verma, P.
Copyright Year	2009
Abstract	Wireless links are often asymmetric due to heterogeneity in the transmission power of devices, non-uniform environmental noise, and other signal propagation phenomenon. Because of the variable and unpredictable capacity of wireless links, packet loses may happen frequently. Several routing protocols have been proposed for Mobile Adhoc networks, yet there is no one for all schemes that works well in all link conditions with different network sizes, traffic loads and node mobility patterns. This paper first presents a study of various routing protocols and the impact of asymmetric links on network connectivity. It then presents a framework that provides a bidirectional abstraction of the asymmetric network to routing protocols. This new framework works by maintaining multi-hop reverse routes for unidirectional links and provides three new abilities: improved connectivity by taking advantage of the unidirectional links, reverse route forwarding of control packets to enable off-the shelf routing protocols, and detection packet loss on unidirectional links. This framework takes the approach of discovering and maintaining reverse paths for unidirectional links. Experiments were conducted in ns2 simulator with the design of bidirectional routing abstraction to maintain reverse routes for unidirectional links in an efficient and scalable manner. Performance evaluation shows how a typical routing protocol, such as the well-known AODV, layered on this framework achieves superior connectivity in asymmetric networks.
Starting Page	1143
Ending Page	1150
File Size	402200
Page Count	8
File Format	PDF
ISBN	9781424452507
DOI	10.1109/ICETET.2009.8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-16
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Adaptive systems Network topology Working environment noise Wireless networks Telecommunication traffic Spread spectrum communication Routing protocols Ad hoc networks Power engineering and energy
Content Type	Text
Resource Type	Article

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