Mitigating false blocking problem in wireless ad hoc networks

Chong, W.K. and Drieberg, M. and Jeoti, V. (2018) Mitigating false blocking problem in wireless ad hoc networks. Telecommunication Systems, 67 (1). pp. 31-46.

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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. © 2017, Springer Science+Business Media New York.

Item Type:Article
Impact Factor:cited By 0
Uncontrolled Keywords:Access control; Ad hoc networks; Energy resources; Medium access control, Blocking notification; False blocking; Hidden node problems; Medium access control layer; Neighbouring nodes; RTS/CTS; Scarce energy resources; Throughput degradation, Wireless ad hoc networks
ID Code:21915
Deposited By: Ahmad Suhairi
Deposited On:01 Aug 2018 01:13
Last Modified:01 Aug 2018 01:13

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