Random access in a cognitive radio network with slotted Aloha for primary users and CSMA for secondary users

Zhuo Yang, Yu Dong Yao, Di Zheng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Slotted Aloha and carrier sensing multiple access (CSMA) are effective random access protocols, which can also be important elements of more advanced media access protocols. In this paper, we investigate slotted Aloha and CSMA protocols in a cognitive radio network, where primary users have higher priority than secondary users and secondary users need to monitor the channel to avoid interference to the primary users, it is thus proposed that slotted Aloha is used for primary users to access the channel and secondary users use slotted CSMA to sense the time slots of slotted Aloha and transmit their packets during idle time slots. A Rayleigh fading channel is considered and we derive the throughput of slotted Aloha and CSMA for the primary and secondary users.

Original languageEnglish
Title of host publication33rd IEEE Sarnoff Symposium 2010, Conference Proceedings
DOIs
StatePublished - 2010
Event33rd IEEE Sarnoff Symposium 2010 - Princeton, NJ, United States
Duration: 12 Apr 201014 Apr 2010

Publication series

Name33rd IEEE Sarnoff Symposium 2010, Conference Proceedings

Conference

Conference33rd IEEE Sarnoff Symposium 2010
Country/TerritoryUnited States
CityPrinceton, NJ
Period12/04/1014/04/10

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