Investigation of the block ACK scheme in wireless ad hoc networks

Li, Tianji and Ni, Qiang and Xiao, Yang (2006) Investigation of the block ACK scheme in wireless ad hoc networks. Wireless Communications and Mobile Computing, 6 (6). pp. 877-888. ISSN 1530-8669

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A Block Transmission and Acknowledgement (BTA) scheme, also called Block ACK, has been proposed in the IEEE 802.11e wireless local area networks (WLAN) specification to improve efficiency of the medium access control layer. The idea of the BTA scheme is to transmit multiple data frames followed by only one acknowledgement frame in a transmission block. In this paper, we present a theoretical model to evaluate the saturation throughput for the BTA scheme under error channel conditions in the ad hoc mode, validated with simulations. We show some advantages of BTA over the legacy MAC, and analyze how to select a proper number of frames for each transmission block. Results show that BTA is particularly effective in very high-speed wireless networks, and it is important that the number of frames in each block is negotiated before transmissions to provide better efficiency.

Item Type:
Journal Article
Journal or Publication Title:
Wireless Communications and Mobile Computing
Uncontrolled Keywords:
?? medium access control (mac)wireless ad hoc networksblock ack (bta)computing, communications and ictcomputer networks and communicationsinformation systemselectrical and electronic engineeringt technology (general) ??
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Deposited On:
04 Nov 2012 17:18
Last Modified:
15 Jul 2024 13:22