Title :
Theoretic Analysis of IEEE 802.11 Rate Adaptation Algorithm SampleRate
Author :
He, Jianhua ; Guan, Wenyang ; Bai, Lin ; Chen, Kai
Author_Institution :
Coll. of Eng., Swansea Univ., Swansea, UK
fDate :
5/1/2011 12:00:00 AM
Abstract :
In this paper we investigate rate adaptation algorithm SampleRate, which spends a fixed time on bit-rates other than the currently measured best bit-rate. A simple but effective analytic model is proposed to study the steady-state behavior of the algorithm. Impacts of link condition, channel congestion and multi-rate retry on the algorithm performance are modeled. Simulations validate the model. It is also observed there is still a large performance gap between SampleRate and optimal scheme in case of high frame collision probability.
Keywords :
probability; wireless LAN; IEEE 802.11 rate adaptation algorithm; SampleRate rate adaptation algorithm; channel congestion; high-frame collision probability; link condition; steady-state behavior; theoretic analysis; wireless LAN; Adaptation model; Algorithm design and analysis; Analytical models; IEEE 802.11 Standards; Markov processes; Signal to noise ratio; Throughput; CSMA/CA; IEEE 802.11; Markov chain; link adaptation; multiple access control; performance modeling;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.031411.102497
