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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=12#.VNMu4SzQrzE
Affiliation(s)
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, P.R.China.
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, P.R.China.
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, P.R.China.
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, P.R.China.
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, P.R.China.
ABSTRACT
In
WLANs, stations sharing a common wireless channel are governed by IEEE
802.11 protocol. Many conscious studies have been conducted to utilize
this precious medium efficiently. However, most of these studies have
been done either under assumption of idealistic channel condition or
with unlimited retransmitting number. This paper is devoted to
investigate influence of limited retransmissions and error level in the
utilizing channel on the network throughput, probability of packet
dropping and time to drop a packet. The results show that for networks
using basic access mechanism the throughput is suppressed with
increasing amount of errors in the transmitting channel over all the
range of the retry limit. It is also quite sensitive to the size of the
network. On the other side, the networks using four-way handshaking
mechanism has a good immunity against the error over the available range
of retry limits. Also the throughput is unchangeable with size of the
network over the range of retransmission limits. However, the throughput
does not change with retry limits when it exceeds the maximum number of
the backoff stage in both DCF’s mechanisms. In both mechanisms the
probability of dropping a packet is a decreasing function with number of
retransmissions and the time to drop a packet in the queue of a station
is a strong function to the number of retry limit, size of the network,
the utilizing medium access mechanism and amount of errors in the
channel.
Cite this paper
References
M.
ALSABBAGH, H. , CHEN, J. and XU, Y. (2008) Influence of the Limited
Retransmission on the Performance of WLANs Using Error-Prone Channel. Int'l J. of Communications, Network and System Sciences, 1, 49-54. doi: 10.4236/ijcns.2008.11007.
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