Cross-layer performance analysis for CSMA/CA system: Impact of imperfect sensing

Author

Chong, Jo Woon ; Sung, Youngchul ; Sung, Dan Keun

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon

fYear

2008

fDate

6-9 July 2008

Firstpage

96

Lastpage

100

Abstract

The performance of the carrier sense multiple access/collision avoidance (CSMA/CA) protocol under the presence of carrier sensing errors is analyzed. Two types of carrier sensing errors, false alarm and miss detection, are considered, and their impact on system performance is analyzed using a new CSMA/CA model based on a Markov chain capturing the sensing errors at the physical layer. The throughput as a function of these sensing error probabilities as well as other CSMA/CA parameters is obtained. It is shown that the throughput loss by a poorly chosen sensing threshold is tolerable at intermediate values of the ratio of the packet size to the contention window size, whereas care should be taken in choosing the sensing threshold when the ratio is small or large.

Keywords

Markov processes; carrier sense multiple access; CSMA-CA system; Markov chain; carrier sense multiple access protocol; collision avoidance protocol; cross-layer performance analysis; imperfect sensing; Access protocols; Collision avoidance; Multiaccess communication; Performance analysis; Physical layer; System performance; Throughput; Wireless LAN; Wireless sensor networks; ZigBee;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2008. SPAWC 2008. IEEE 9th Workshop on

Conference_Location

Recife

Print_ISBN

978-1-4244-2045-2

Electronic_ISBN

978-1-4244-2046-9

Type

conf

DOI

10.1109/SPAWC.2008.4641577

Filename

4641577