Mitigating false blocking problem in wireless ad hoc networks

Wai Kheong Chong (), Micheal Drieberg () and Varun Jeoti ()
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Wai Kheong Chong: Universiti Teknologi PETRONAS
Micheal Drieberg: Universiti Teknologi PETRONAS
Varun Jeoti: Universiti Teknologi PETRONAS

Telecommunication Systems: Modelling, Analysis, Design and Management, 2018, vol. 67, issue 1, No 4, 46 pages

Abstract: Abstract The traditional IEEE802.11 Request-to-Send/Clear-to-Send (RTS/CTS) handshaking in medium access control layer has been widely adopted in wireless ad hoc networks to reduce the hidden node problem. However, it induces the false blocking problem, which occurs when nodes are prevented from replying to any incoming RTS packets when they are in deferring state after overhearing the RTS and/or CTS packets. Worse still, these unreplied RTS packets will then cause other neighbouring nodes to defer blindly which propagates the false blocking problem, resulting in exhaustion of scarce energy resource and throughput degradation. In this paper, we propose an adaptive Ready-to-Send and blocking notification (RSBN) scheme to mitigate the false blocking problem. The adaptive RSBN scheme not only validates the overheard RTS packets to avoid blind deferment but also informs neighbouring nodes of the nodes’ deferring status to block unnecessary RTS packets. We validate the proposed scheme by simulations and the results have shown that the adaptive RSBN scheme can achieve higher performance.

Keywords: Blocking notification; False blocking; MAC; RTS/CTS; Wireless ad hoc network (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11235-017-0314-3

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