Journal of Computer Science | |
Analytical Modeling of IEEE 802.11e Enhanced Distributed Channel Access under a Non-Saturation Condition | Science Publications | |
G. Prakash1  P. Thangaraj1  | |
关键词: Enhanced Distributed Channel Access (EDCA); markov model; Contention Window (CW); non-saturation; Quality-of-Servi (QoS); Bit Error Rate (BER); | |
DOI : 10.3844/jcssp.2011.554.560 | |
学科分类:计算机科学(综合) | |
来源: Science Publications | |
【 摘 要 】
Problem statement: The IEEE 802.11e EDCA protocol with different access Categories(ACs) supporting for Quality-of-Service (QoS). Due to internal or external packet collision, theContention Window (CW) of the station increases the channel idle time under high Bit Error Rate(BER). Approach: In this study, we propose an analytical model for performance evaluation of IEEE802.11e EDCA scheme under non-saturation condition and error prone channel. The new markovchain model have decrease the channel idle time in IEEE 802.11 EDCA and considerably increases thethroughput for minimum number of station. Results: We develop an expression for the nonsaturationthroughput as a function of the number of stations, packet sizes and BER. Conclusion: We validate theaccuracy of our analysis with simulation expression. Using this model, the contention factors can beset appropriately to attain particular Quality-of-Service (QoS) requirements.
【 授权许可】
Unknown
【 预 览 】
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RO201911300487739ZK.pdf | 209KB | download |