A Quality-Aware Rendezvous Framework for Cognitive Radio Networks

Hai Liu, Lu Yu, Chung Keung Poon, Zhiyong Lin, Yiu- Wing Leung, Xiaowen Chu

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

Abstract

In cognitive radio networks, rendezvous is a fundamental operation by which cognitive users establish communication links. Most of existing works were devoted to shortening the time-to-rendezvous (TTR) but paid little attention to qualities of the channels on which rendezvous is achieved. In fact, qualities of channels, such as resistance to primary users' activities, have a great effect on the rendezvous operation. If users achieve a rendezvous on a low-quality channel, the communication link is unstable and the communication performance is poor. In this case, re- rendezvous is required which results in considerable communication overhead and a large latency. In this paper, we first show that actual TTRs of existing rendezvous solutions increase by 65.40-104.38% if qualities of channels are not perfect. Then we propose a Quality-Aware Rendezvous Framework (QARF) that can be applied to any existing ren-dezvous algorithms to achieve rendezvous on high-quality channels. The basic idea of QARF is to expand the set of available channels by selectively duplicating high-quality channels. We prove that QARF can reduce the expected TTR of any rendezvous algorithm when the expanded ratio $\lambda$ is smaller than the threshold $(-3+\sqrt{1+4(\frac{\sigma}{\mu})^{2}}) / 2$, where $\mu$ and $\sigma$, respectively, are the mean and the standard deviation of qualities of channels. We further prove that QARF can always reduce the expected TTR of Random algorithm by a factor of $1+(\frac{\sigma}{\mu})^{2}$. Extensive experiments are conducted and the results show that QARF can significantly reduce the TTRs of the existing rendezvous algorithms by 10.50-51.05 % when qualities of channels are taken into account.
Original languageEnglish
Title of host publication2022 18th International Conference on Mobility, Sensing and Networking (MSN)
EditorsJavier Gurrola
PublisherIEEE
Pages20-27
Number of pages8
ISBN (Electronic)9781665464574
ISBN (Print)9781665464581
DOIs
Publication statusPublished - 16 Dec 2022
Event2022 18th International Conference on Mobility, Sensing and Networking (MSN) - Guangzhou, China
Duration: 14 Dec 202216 Dec 2022

Publication series

NameProceedings - International Conference on Mobile Ad-hoc and Sensor Networks, MSN

Conference

Conference2022 18th International Conference on Mobility, Sensing and Networking (MSN)
Period14/12/2216/12/22

Scopus Subject Areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Safety, Risk, Reliability and Quality
  • Instrumentation

User-Defined Keywords

  • Channel hop-ping
  • Channel-duplicate
  • Cognitive radio networks
  • Quality-Aware

Fingerprint

Dive into the research topics of 'A Quality-Aware Rendezvous Framework for Cognitive Radio Networks'. Together they form a unique fingerprint.

Cite this