Conference proceedings article
CS-PRMA/AP : Carrier sense packet reservation multiple access with adaptive permission probability

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Subtitle: Carrier sense packet reservation multiple access with adaptive permission probability
Author list: Xu, Y S
Publisher: PUBLISHING HOUSE ELECTRONICS INDUSTRY
Place: BEIJING
Publication year: 2000
Start page: 892
End page: 899
Number of pages: 8
ISBN: 0780363949;0780363949;0780363949
View additional information: View in Web of Science™

Abstract

In the paper a Carrier Sense Packet Reservation Multiple Access (CS-PRMA) protocol is proposed for Wireless Local Area Networks (WLAN). The proposed protocol can be viewed as a combination of CSMA with adaptive permission probability for contentions and TDMA for reserved transmissions. A mechanism for the sense of hidden transmitting terminals is described. As the original PRMA the CS-PRMA system has the properties of soft capacity, soft hand-over, and distributed slot assignment and selection. The basic feature that characterises CS-PRMA with respect to original PRMA is its very high channel efficiency. Simulation shows that a capacity of 2.50 conversations per slot is achievable for a broadband communication system with fast speech activity detectors. This capacity is close to the upper bound of the PRMA capacity, 2.78 conversations per slot. Furthermore the consecutive contention scheme is very flexible for different traffics with different priorities, such as voice, network control signals and data messages. This protocol is suitable for broadband WLANs, where a high degree of distributed system control is required.


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