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Performance Analysis of SR-ARQ Based on Geom/G/1/¥ Queue over Wireless Link |
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PP: 1969-1976 |
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Author(s) |
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Suoping Li,
Yongqiang Zhou,
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Abstract |
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| Selective-Repeat ARQ (Automatic Repeat reQuest) protocol is the most efficient error control technology in wireless
because it allows the transmitter to retransmit only negatively acknowledges (NACK) packets. In this paper, by analyzing the
transmission mechanism of SR-ARQ, the discrete-time Geom/G/1/ queue model is established sententiously based on equivalent delay
under the condition that the numbers of packets entering the transmitter are assumed to be independent and identically distributed
random variables. With the method of embedded Markov chain, the expression formulations of the packet mean waiting delay, system
mean delay and channel utilization are explicitly obtained. And then, the sliding window length control model is built adaptively
according to the change of transmission conditions. Furthermore, the influences of packet length, the successful transmission probability
and packet arrival rate on system mean delay are analyzed by numerical simulation. The numerical simulation results show that the
expression formulations are valid for SR-ARQ protocol. |
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