BOB-RED queue management for IEEE 802.15.4 wireless sensor networks

Abstract

Multimedia services over resource constrained wireless sensor networks (WSNs) face a performance bottleneck issue from the gateway node to the sink node. Therefore, the queue management at the gateway node is crucial for diversified messages conveyed from the front nodes to the sink node. In this article, beacon order-based random early detection (BOB-RED) queue management is proposed. BOB-RED is a dynamic adaptation scheme based on adjusting beacon interval and superframe duration in the IEEE 802.15.4 MAC superframe accompanied with RED queue management scheme to increase the transmission efficiency of multimedia over WSNs. We focus on the performance improvement upon different traffic loads over WSNs. Evaluation metrics include end-to-end delay, packet delivery ratio, and energy consumption in IEEE 802.15.4 beacon enabled mode. Simulation results show that BOB-RED can effectively decrease end-to-end delay and energy consumption compared to the DropTail scheme.

Maximum Production of Transmission Messages Rate for Service Discovery Protocols

“…If marked packets are in fact dropped, or if all source nodes are cooperative, this ensures that the average queue size does not significantly exceed the max threshold. Each arriving packet is marked with probability pa (where pa is a function of the average queue size), when the average queue size is between the min and the max, [2][27] [35].…”

A Traffic Redirection Based Congestion Control Scheme in Body Area Networks

“…The mechanism uses current queue length for congestion detection in each node and multi-stage rate adjustment for congestion control. In Lin et al (2011), a queue management based mechanism for congestion avoidance based on IEEE 802.15.4 was proposed in WSN. HOCA (Rezaee et al, 2013) (Healthcare aware Optimized Congestion Avoidance), a data centric congestion management protocol, avoids congestion using queue management.…”