QoF: Towards comprehensive path quality measurement in wireless sensor networks

Abstract—Due to its large scale and constrained communication radius, a wireless sensor network mostly relies on multi-hop transmissions to deliver a data packet along a sequence of nodes. It is of essential importance to measure the forwarding quality of multi-hop paths and such information shall be utilized in designing efficient routing strategies. Existing metrics like ETX, ETF mainly focus on quantifying the link performance in between the nodes while overlooking the forwarding capabilities inside the sensor nodes. The experience on manipulating GreenOrbs, a large-scale sensor network with 330 nodes, reveals that the quality of forwarding inside each sensor node is at least an equally important factor that contributes to the path quality in data delivery. In this paper we propose QoF, Quality of Forwarding, a new metric which explores the performance in the gray zone inside a node left unattended in previous studies. By combining the QoF measurements within a node and over a li...

• Type: Journal
• Year: 2011
• Where: INFOCOM
• Authors: Jiliang Wang, Yunhao Liu, Mo Li, Wei Dong, Yuan He
• Keywords: Communications, INFOCOM 2011, Routing Protocols, Sensor Node, Wireless Sensor Network