Modeling and Analysis for Reactive-Decision Spectrum Handoff in Cognitive Radio Networks

This paper investigates how to characterize the effect of multiple spectrum handoff delay on the extended data delivery time of the secondary users' connections in cognitive radio (CR) networks. Whenever a primary user appears, the spectrum handoff procedures are initiated for the interrupted secondary users. Through spectrum sensing, the secondary user can reactively decide the target channel for spectrum handoff to resume its unfinished transmission. Clearly, many interruptions from the primary users will result in multiple handoffs, thereby increase the extended data delivery time of a secondary connection. In this paper, we develop a Markov transition model integrating with the preemptive resume priority (PRP) M/G/1 queueing network to characterize the multiple handoff delay, resulting from the sensing time, the handshaking time, the channel switching time, and the waiting time. The analytical results can facilitate the designs of admission control rules for the secondary user...

• Type: Journal
• Year: 2010
• Where: GLOBECOM
• Authors: Chung-Wei Wang, Li-Chun Wang, Fumiyuki Adachi
• Keywords: Communications, Data Delivery Time, Extended Data Delivery, GLOBECOM 2010, Secondary Users