4
Paper Review: Power Saving Mechanism with Network coding in the bottleneck zone of multimedia
sensor networks
CSC 535 Advanced Computer Networking
1. Introduction
A Wireless Sensor Network (WSN) as evident in its name is a wireless network that is made
up of autonomous sensing devices distributed in a target area where data is to be collected. A
WSN is a network that serves as a bridge between a physical network-WAN, LAN and a
virtual worlds. In other words, there is a gateway that provides wireless connection to a wired
network and other nodes in the WSN.
Figure 1. Sketch of a Wireless Sensor Network
The development of WSNs was inspired by military applications, notably surveillance in
conflict zones1. There are a number of other applications that Wireless Sensor Networks are
being used, to name a few of them;
• Monitoring of environment –Air, Soil, Water
• Asset Tracking
• Rapid emergency Response
• Structuring monitoring – Buildings, Bridges
• Perimeter Security and Surveillance
• Process Monitoring