NDLI: Multihop routing and resource allocation for multimedia applications in dynamic spectrum access networks

Content Provider	IEEE Xplore Digital Library
Author	Jingkai Su Wyglinski, A.M.
Copyright Year	2011
Description	Author affiliation: Wireless Innovation Laboratory, Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, MA, USA 01609-2280 (Jingkai Su; Wyglinski, A.M.)
Abstract	In this paper, we propose a distributed routing mechanism in dynamic spectrum access (DSA) networks based on a pricing mechanism, in which each node put prices on their relaying services and adjust the price according to the interference condition and the spectrum availability. The proposed mechanism tries to provide required bandwidth for multimedia transmissions in DSA networks. DSA networks employing cognitive radios enable agile transmissions and provide additional transmission capacity that would otherwise be unavailable. Although the technologies applied in DSA networks provide more information than traditional contention-based networks, conventional resource allocation mechanisms cannot fully use these measurements from the MAC layers to regulate the network. The interference pattern in distributed DSA networks is also not the same as it is in contention-based TDMA networks. Consequently, spectrum allocation mechanisms must cooperate with routing algorithms in order to adapt to the rapidly varying environment of distributed wireless networks. Routing decision is made based on the price offered and price for relaying. Resources are allocated during the routing process according to interference predictions based on spectrum measurements. Simulation results show that the proposed approach increased the throughput of the network by approximately 100% in heavy traffic situation relative to an AODV based direct resource allocation approach.
Starting Page	762
Ending Page	767
File Size	135036
Page Count	6
File Format	PDF
ISBN	9781457702525
ISSN	21545952
e-ISBN	9781457702532
e-ISBN	9781457702518
DOI	10.1109/PACRIM.2011.6032990
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-23
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Routing Resource management Throughput Bandwidth Availability Multimedia communication
Content Type	Text
Resource Type	Article

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