Title :
An analysis of CSMA/CA protocol with capture in wireless LANs
Author :
Hadzi-Velkov, Zoran ; Spasenovski, Boris
Author_Institution :
Fac. of Electr. Eng., Ss. Cyril & Methodius Univ., Skopje, Macedonia
Abstract :
In this paper, we use a discrete Markov chain model to analyze the throughput-delay performance of the CSMA/CA protocol in WLANs under the influence of the capture effect. The stations are power-controlled, so we consider the possibility of frame capture of only a single station which is exposed to Rayleigh fading. By sampling the backoff deferral interval with fixed probability p (estimated in saturation conditions), we were able to determine the upper theoretical limits of channel utilization and mean delay for different traffic loads and different capture ratios.
Keywords :
Markov processes; Rayleigh channels; access protocols; carrier sense multiple access; channel allocation; delays; error statistics; telecommunication traffic; wireless LAN; CSMA/CA protocol analysis; Markov chain model; Rayleigh fading; backoff deferral interval; capture effect; capture ratios; channel utilization; fixed probability; frame capture; local area network; mean delay; power controlled stations; throughput-delay performance; traffic loads; upper theoretical limits; wireless LAN; Delay estimation; Local area networks; Multiaccess communication; Performance analysis; Rayleigh channels; Receivers; Sampling methods; Throughput; Wireless LAN; Wireless application protocol;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200561
