Cognitive Radio Based Multi-Channel MAC Protocols for Wireless Ad Hoc Networks Conference Paper uri icon


  • We propose the cognitive-radio-based multi-channel medium access control (MAC) protocols, which integrate the spectrum sensing and packet scheduling, for the wireless ad hoc networks. Specifically, the cognitive MAC protocols allow secondary users to identify and use the unused frequency spectrum in a way that constrains the level of interference to the primary users. Under our proposed protocols, each secondary user is equipped with two transceivers. One of the transceivers operates on a dedicated control channel, while the other is used as a cognitive radio that can periodically sense and dynamically utilize the identified unused channels. To obtain the channel status accurately, we propose two types of collaboratively channelsensing policies, namely random sensing policy and negotiationbased sensing policy, to help the MAC protocols detect the unused channels. We also develop the analytical models to study the proposed MAC protocols with the two types of channel-sensing policies. 2007 IEEE.

name of conference

  • IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference

published proceedings

  • IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference

author list (cited authors)

  • Su, H., & Zhang, X. i.

citation count

  • 27

complete list of authors

  • Su, Hang||Zhang, Xi

publication date

  • November 2007