Title :
Analytical study of a slotted CSMA protocol on a two-state Markov channel
Author_Institution :
Dipt. di Fisica, Ferrara Univ., Italy
Abstract :
The paper presents an analytical investigation of a simple medium access scheme for wireless networks based on a channel sensing and a retransmission scheme, used to recover packet errors due to wrong channel. The system is slotted and the channel has been modeled by means of a two-state Markov chain to simulate bursty errors. For the sake of simplicity, the case of zero round-trip delay and of reliable feedback channel has been taken into account. The theory developed has the aim to evaluate the queue state evolution of the generic node in the network, in order to estimate the average number of packets-present in the queue in the generic slot and the average time to transmit a packet System simulations have been performed to validate the analytical approach.
Keywords :
Markov processes; carrier sense multiple access; delays; fading channels; multipath channels; multiuser channels; packet radio networks; queueing theory; average packet transmission time; bursty errors; channel sensing; fading; generic network node; medium access; medium access control; multipath; packet error recovery; propagation effects; queue state evolution; reliable feedback channel; retransmission; slotted CSMA protocol; two-state Markov chain; two-state Markov channel; wireless networks; zero round-trip delay; Access protocols; Analytical models; Delay; Feedback; Multiaccess communication; Performance analysis; Performance evaluation; Queueing analysis; State estimation; Wireless networks;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.997463
