Title | ||
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A Model for Analyzing the Performance of Wireless Multi-Hop Networks using a Contention-based CSMA/CA Strategy. |
Abstract | ||
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Multi-hop networks are a low-setup-cost solution for enlarging an area of network coverage through multi-hop routing. Carrier sense multiple access with collision avoidance (CSMA/CA) is frequently used in multi-hop networks. Multi-hop networks face multiple problems, such as a rise in contention for the medium, and packet loss under heavy-load, saturated conditions, which consumes more bandwidth due to re-transmissions. The number of re-transmissions carried out in a multi-hop network plays a major role in the achievable quality of service (QoS). This paper presents a statistical, analytical model for the end-to-end delay of contention-based medium access control (MAC) strategies. These strategies schedule a packet before performing the back-off contention for both differentiated heterogeneous data and homogeneous data under saturation conditions. The analytical model is an application of Markov chain theory and queuing theory. The M/M/1 model is used to derive access queue waiting times, and an absorbing Markov chain is used to determine the expected number of re-transmissions in a multi-hop scenario. This is then used to calculate the expected end-to-end delay. The prediction by the proposed model is compared to the simulation results, and shows close correlation for the different test cases with different arrival rates. |
Year | DOI | Venue |
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2017 | 10.3837/tiis.2017.05.011 | KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS |
Keywords | Field | DocType |
Queue Model,Markov Model,End-to-end Delay,Scheduling,Absorbing state,CSMA/CA | Wireless,Computer science,Computer network,Hop (networking),Carrier sense multiple access with collision avoidance,Distributed computing | Journal |
Volume | Issue | ISSN |
11 | 5 | 1976-7277 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Sajid M. Sheikh | 1 | 0 | 0.34 |
Riaan Wolhuter | 2 | 15 | 5.51 |
Herman Arnold Engelbrecht | 3 | 36 | 5.51 |