NDLI: Minimizing the routing delay in cognitive radios using potential fields

Content Provider	IEEE Xplore Digital Library
Author	Oksanen, J. Kaufman, B. Koivunen, V. Poor, H.V.
Copyright Year	2015
Description	Author affiliation: Dept. of Signal Process. & Acoust., Aalto Univ., Helsinki, Finland (Oksanen, J.; Kaufman, B.; Koivunen, V.) \|\| Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA (Poor, H.V.)
Abstract	In this paper a novel delay aware potential field based routing is proposed for cognitive radio. The proposed methods are inspired by potential field techniques applied in robot navigation. The novelty of the proposed methods arises from identifying the analogy between packet routing in wireless networks and obstacle avoidance in robot navigation. This allows for the modeling of desired communication destinations as attractive forces and sources of interference as repulsive forces, that guide the packet towards the destination while avoiding interference. The packets are routed along the potential induced by these forces towards the destination. In this paper we focus on minimizing the route delay, but other routing metrics such as energy could be used as well. It is shown that the proposed delay aware potential field based routing method can significantly reduce the average route delay while ensuring that the interference induced remains in tolerable levels. Furthermore, it is shown via simulations that a suboptimal but computationally simpler one-iteration version of the optimal potential field can achieve delay performance that is close to optimum. The simulation results also illustrate that by knowing (or by spending some resources in finding out) the PU receiver location can significantly reduce the average delay.
Starting Page	625
Ending Page	629
File Size	189533
Page Count	5
File Format	PDF
e-ISBN	9781479919314
DOI	10.1109/SPAWC.2015.7227113
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-28
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delays Routing Receivers Interference Robots Transmitters Signal to noise ratio robot navigation Cognitive radio opportunistic spectrum access (OSA) routing potential field
Content Type	Text
Resource Type	Article

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