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Efficient dynamic frame aggregation in IEEE 802.11s mesh networks
Author(s) -
Lin YingDar,
Yeh JuiHung,
Yang TsungHsien,
Ku ChiaYu,
Tsao ShiaoLi,
Lai YuanCheng
Publication year - 2009
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1028
Subject(s) - computer science , computer network , network allocation vector , ieee 802.11 , frame (networking) , service set , ieee 802.11s , overhead (engineering) , throughput , wireless mesh network , wireless network , wireless , wi fi , telecommunications , operating system
IEEE 802.11n could improve the network efficiency of WLAN by aggregating multiple frames into a single transmission. The frame aggregation technique especially benefits multi‐hop transmissions that introduce enormous 802.11 medium access control (MAC) layer control overhead. This paper proposes a novelalgorithm, namely dynamic aggregation selection and scheduling ( DASS ) algorithm, that can dynamically adopt the appropriate aggregation mechanism for IEEE 802.11s mesh network. The characteristics, benefits and the restrictions of three aggregation mechanisms, aggregate MAC service data units, aggregate MAC protocol data unit and aggregate physical protocol data unit, are investigated. Based on the channel condition, the quantity and the distribution of the frame arrivals, DASS could determine what aggregation mechanism to adopt and whether to wait for the next frame for aggregating transmissions. Simulation results demonstrate that the algorithm significantly increases the channel efficiency of the 802.11 MAC and further improves the overall throughput of the wireless mesh network by approximately 95%. Copyright © 2009 John Wiley & Sons, Ltd.