CSMA/CCA: A modified CSMA/CA protocol mitigating the fairness problem for IEEE 802.11 DCF

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

Using a distributed coordination function (DCF), the CSMA/CA protocol reduces collisions and improves the overall throughput in the IEEE802.11 WLAN. To mitigate fairness issues arising with CSMA/CA, we develop a modified version that we term CSMA/CCA (CSMA with copying collision avoidance). A station in CSMA/CCA contends for the shared wireless medium by employing a binary exponential backoff similar to CSMA/CA. Different from CSMA/CA, CSMA/CCA copies the contention window (CW) size piggybacked in the MAC header of an overheard data frame within its basic service set (BSS), and updates its backoff counter according to the new CW size. Simulations illustrate that CSMA/CCA improves fairness relative to CSMA/CA and offers considerable advantages for deployment in the 802.11 standard based WLANs.

Original languageEnglish (US)
Pages88-95
Number of pages8
DOIs
StatePublished - Dec 1 2005
Event2005 1st InternationalConference on Multimedia Services Access Networks, MSAN05 - Orlando, FL, United States
Duration: Jun 13 2005Jun 15 2005

Other

Other2005 1st InternationalConference on Multimedia Services Access Networks, MSAN05
CountryUnited States
CityOrlando, FL
Period6/13/056/15/05

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    Wang, X., & Giannakis, G. B. (2005). CSMA/CCA: A modified CSMA/CA protocol mitigating the fairness problem for IEEE 802.11 DCF. 88-95. Paper presented at 2005 1st InternationalConference on Multimedia Services Access Networks, MSAN05, Orlando, FL, United States. https://doi.org/10.1109/MSAN.2005.1489949