Abstract
Queue State-Based Parent Selection Algorithm for Large-Scale WSNs
Highlights
Wireless sensor networks (WSNs) have been used in various fields such as health care, environmental monitoring, manufacturing processes, and home automation
The QU-routing protocol for LLN (RPL) can significantly reduce the packet loss ratio, but it may lead to unnecessary changes in the parent node and an increased number of DAG information object (DIO) messages in the network, because the trickle timer to control the DIO transmission interval is frequently reset owing to the increased number of topology changes
We propose a queue-state-based parent selection (QSPS) algorithm designed to reduce the packet loss ratio caused by a limited queue capacity and to minimize the number of DIO messages in the network
Summary
Wireless sensor networks (WSNs) have been used in various fields such as health care, environmental monitoring, manufacturing processes, and home automation. The sensor nodes periodically probe for changes in the surrounding environment and forward data to the sink node by multihop relaying This example of a large-scale WSN is typically a low-power lossy network (LLN) in which the sensor nodes are constrained in terms of resources such as limited power, memory, and central processing unit (CPU). The QU-RPL can significantly reduce the packet loss ratio, but it may lead to unnecessary changes in the parent node and an increased number of DIO messages in the network, because the trickle timer to control the DIO transmission interval is frequently reset owing to the increased number of topology changes. We propose a queue-state-based parent selection (QSPS) algorithm designed to reduce the packet loss ratio caused by a limited queue capacity and to minimize the number of DIO messages in the network. We describe the design and performance of our algorithm in detail
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