Title :
Analysis of CSMA/CA Systems under Carrier Sensing Error: Throughput, Delay and Sensitivity
Author :
Jo Woon Chong ; Youngchul Sung ; Sung, Youngchul
Author_Institution :
Sch. of EECS, KAIST, Daejeon
Abstract :
In this paper, the performance of the carrier sense multiple access/ collision avoidance (CSMA/CA) protocol under the presence of carrier sensing error is analyzed. Based on our previous work [1], we extend the results to n-user case (n>2), and analyze the sensitivity of the throughput with respect to the key physical-layer parameter, the sensing threshold, via a cross-layer approach. The result provide guidelines about how to operate the CSMA/CA considering imperfect sensing at physical layer. It is shown that the throughput sensitivity highly depends on the ratio of the contention window size W to the frame length L, and the throughput is sensitive to the design of the sensing threshold when W/L is either small or large.
Keywords :
carrier sense multiple access; delays; sensitivity analysis; CSMA/CA system analysis; carrier sense multiple access/collision avoidance protocol; carrier sensing error; contention window size; cross-layer approach; physical-layer parameter; sensitivity analysis; throughput analysis; Access protocols; Collision avoidance; Counting circuits; Delay; Guidelines; Multiaccess communication; Performance analysis; Physical layer; Throughput; Transmitters;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.944
