Home // ICWMC 2012, The Eighth International Conference on Wireless and Mobile Communications // View article
Authors:
Peng Hao
Weiting Liu
Jianhua Wang
Keywords: 802.15.4 MAC; CSMA/CA; Data delivery procedure; Discrete-time Markov-Chain; Performance evaluation.
Abstract:
Data delivery procedure (DDP) based on IEEE 802.15.4 involves a series of sub-procedures. They are CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance), data transmission (Tx), acknowledgment (ACK) related behavior (ACK wait duration and ACK transmission). Any failure during this procedure leads to an unsuccessful delivery. This procedure, in fact, determines the network performance, yet not received adequate concern. The algorithm of CSMA/CA, which generally has also been simplified in previous literature. We investigate a discrete-time Markov-chain (DTMC) for DDP without simplification. Due to these subprocedures, four cases during this procedure are proposed via DTMC models. Particularly, we evaluate the impact of different times of retransmission (ReTx) on the network performance. The performance is investigated in terms of throughput, data delivery ratio and time delay. We also verify our analysis via simulation. Both theoretical and simulation imply that less ReTx can bring better performance.
Pages: 62 to 68
Copyright: Copyright (c) IARIA, 2012
Publication date: June 24, 2012
Published in: conference
ISSN: 2308-4219
ISBN: 978-1-61208-203-5
Location: Venice, Italy
Dates: from June 24, 2012 to June 29, 2012