Abstract
When autonomous cognitive radios (CRs) have to search
multiple potential channels for spectrum opportunities,
they face competition from one another to access the
channel. The end result of this competition is reduced CR
throughput due to collisions among CRs that transmit in
the same channel. In this context, the channel sensing
order, i.e., the order in which CRs competing for the
channels visit those channels, will affect their
probability of successful access. This paper presents an
investigation into the sensing order dispersion problem,
where two or more autonomous CRs attempt to avoid one
another by selecting those sensing orders that reduce the
likelihood of collisions among one another. We present
adaptive strategies that enable the CRs to achieve
sensing order dispersion. We evaluate the performance of
the presented adaptive strategies in terms of expected
time for the autonomous CRs to reach collision-free
sensing orders and also in terms of average number of
successful transmissions in the network
Original language | English |
---|---|
Title of host publication | Proceedings |
Subtitle of host publication | 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications |
Pages | 191-195 |
DOIs | |
Publication status | Published - 2011 |
MoE publication type | A4 Article in a conference publication |
Event | 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM - Osaka, Japan Duration: 1 Jun 2011 → 3 Jun 2011 Conference number: 6 |
Conference
Conference | 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM |
---|---|
Abbreviated title | CROWNCOM |
Country/Territory | Japan |
City | Osaka |
Period | 1/06/11 → 3/06/11 |