Messaging and spectrum sharing between ad-hoc cognitive radio networks

The efficacy of cognitive radio (CR) networks is defined by the ability of radio terminals and their network management systems to identify and classify co-channel interference and propagation dependent degradation. Isolating these phenomena and gathering statistical information about their behavior is a required step if cognitive control algorithms are to be effective in achieving spectrum sharing in ad-hoc wireless networks such as those operating using license-exempt bands. This paper summarizes the two CR approaches that are being studied in the IEEE 802.16H Task Group on coexistence of LE networks and examines messaging concepts that support CR functionality. In both approaches system architecture plays a defining role in the determining the messaging for these wireless networks