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Supporting QoS Differentiation in Energy-Constrained Cognitive Radio Networks

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Abstract

Routing protocols for cognitive radio ad hoc networks (CRNs) select a route between the source and destination nodes based on the spectrum opportunity at intermediate nodes. When multiple routes are possible, most routing protocols for CRNs use some metric—independent of the traffic class—to select routes. However, a route that works well for transferring a particular class of data may not be the right one for a different data class, as its quality of service (QoS) requirements may differ. In this paper, we propose a reactive energy efficient routing protocol with differentiated services (REEDS) for cognitive radio networks. Route selection in REEDS is based on different (multiple) hop metrics calculated dynamically for different traffic classes so that a minimum level of QoS is guaranteed. Another characteristic feature of REEDS is the prediction and dodging of nodes that may be excessively loaded with traffic. This results in the avoidance of formation of holes due to heavy energy expenditure by some nodes. Simulation shows that routes in REEDS are established so that the QoS requirements of each traffic class are satisfied and lesser energy is consumed compared to other routing protocols for CRNs.

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Authors and Affiliations

  1. Department of Computer Science and Engineering, GMR Institute of Technology, Rajam, India

    Lakshmana Rao Kalabarige

  2. Department of Computer Science and Engineering, GVP College of Engineering(A), Visakhapatnam, India

    Shanti Chilukuri

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  1. Lakshmana Rao Kalabarige
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  2. Shanti Chilukuri
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Correspondence to Shanti Chilukuri.

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Kalabarige, L.R., Chilukuri, S. Supporting QoS Differentiation in Energy-Constrained Cognitive Radio Networks. Wireless Pers Commun 97, 2459–2474 (2017). https://doi.org/10.1007/s11277-017-4617-1

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  • DOI: https://doi.org/10.1007/s11277-017-4617-1

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