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An adaptive retry-limit scheme for real-time IEEE 802.11 based wireless industrial networks

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2 Author(s)
Maadani, M. ; Dept. of Eng., Islamic Azad Univ., Tehran, Iran ; Motamedi, S.A.

Being reliable and real-time, are the two most challenging requirements of wireless industrial networks due to the shared, error-prone and non-deterministic behaviour of wireless communication medium. Retry-Limit (RL) parameter of IEEE 802.11 standard directly effects on the packet reliability, whereas other parameters mostly effect on packet delay. In this paper, at first the delay-reliability trade-off in wireless industrial networks based on IEEE 802.11 standard, utilizing Enhanced Distributed Channel Access (EDCA) at Medium Access Control (MAC) layer has been studied. Then a simple adaptive retry-limit scheme to minimize packet delay while satisfying the required reliability at low signal to noise ratios (SNR's) is proposed.

Published in:
Computer Science & Education (ICCSE), 2012 7th International Conference on

Date of Conference: 14-17 July 2012

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