Research Article
Reliable Channel Selection and Routing for Real-Time Services over Cognitive Radio Mesh Networks
@INPROCEEDINGS{10.1007/978-3-642-29222-4_4, author={Lang Xie and P. Heegaard and Yan Zhang and Jie Xiang}, title={Reliable Channel Selection and Routing for Real-Time Services over Cognitive Radio Mesh Networks}, proceedings={Quality, Reliability, Security and Robustness in Heterogeneous Networks. 7th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2010, and Dedicated Short Range Communications Workshop, DSRC 2010, Houston, TX, USA, November 17-19, 2010, Revised Selected Papers}, proceedings_a={QSHINE}, year={2012}, month={10}, keywords={cognitive radio mesh networks real-time services vacation queueing channel selection}, doi={10.1007/978-3-642-29222-4_4} }- Lang Xie
P. Heegaard
Yan Zhang
Jie Xiang
Year: 2012
Reliable Channel Selection and Routing for Real-Time Services over Cognitive Radio Mesh Networks
QSHINE
Springer
DOI: 10.1007/978-3-642-29222-4_4
Abstract
In Cognitive Radio Mesh Networks (CogMesh), Secondary Mesh Routers (SMRs) can opportunistically utilize the licensed spectrums for the traffic of the Secondary Mesh Users (SMUs). How to guarantee Quality of Service (QoS) for real-time services over CogMesh is still an opening issue. In this paper, we present a discrete-time vacation queueing system to abstract the Primary User (PU) interruption to SMR data transmission. Moreover, we formulate the optimization problem of joint channel selection and routing, to achieve minimum end-to-end delay for SMR while guaranteeing the channel unavailability. A heuristic method is proposed to solve this problem and results show our proposed method performs the closest to the scheme using optimization tool, and outperforms the minimal unavailability scheme and minimal delay scheme in terms of end-to-end delay and solution rate.