Abstract
In multi-hop cognitive radio networks (CRNs), channel switching and rerouting for a secondary user's (SU's) traffic flow protect the transmission of the primary users (PUs); however, due to the extra overhead and delay, they deteriorate the quality of the SU's transmission. In this paper, aiming to achieve a stable end-to-end delivery for a secondary flow, we study the problem of joint routing and channel assignment (JRCA), by exploiting the concept of expected switching interval (ESI). We first formulate the JRCA problem in a general setting without any constraint on the primary activity. Then, assuming Poisson arrival traffic for the PUs, we investigate the performance of the proposed scheme. Simulation results demonstrate that the proposed scheme enables a secondary flow on average to maintain a long end-to-end transmission time and thus reduces the risk of the flow being interrupted by the appearance of the PUs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.