6533b857fe1ef96bd12b4d51

RESEARCH PRODUCT

A Single radio based channel datarate-aware parallel rendezvous MAC protocol for cognitive radio networks

Lei JiaoFrank Y. Li

subject

Markov chainComputer sciencebusiness.industryDistributed computingComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSRendezvousMarkov processData_CODINGANDINFORMATIONTHEORYsymbols.namesakeCognitive radioControl channelsymbolsTransceiverbusinessProtocol (object-oriented programming)Computer networkCommunication channel

description

Channel hopping based parallel rendezvous multichannel MAC protocols have several advantages since they do not need a control channel, require only one transceiver, and produce higher system capacity. However, channel hopping sequences in existing parallel rendezvous MAC protocols have been designed as irrelevant to channel datarates, leading to under-utilization of channel resources in multi-rate multi-channel networks. Considering that datarates among channels may be different, we propose a dynamic parallel rendezvous multichannel MAC protocol for synchronized cognitive radio networks in which the secondary users adjust their own distinct hopping sequences according to the datarates of the available channels, in a datarate-aware manner. A Markov chain based model has been developed to analyze the aggregate datarate of the proposed protocol. Numerical results show that the proposed method can improve the aggregate datarate significantly, compared with that of the existing parallel rendezvous MAC protocol.

yearjournalcountryeditionlanguage
2009-10-012009 IEEE 34th Conference on Local Computer Networks
https://doi.org/10.1109/lcn.2009.5355152