Implementation of wsn protocol on a heterogeneous hardware

Abstract

Wireless sensor network has become the ubiquitous communication system due to its low power consumption, durability, ease of deployment, and simplicity of the protocol stack. It is most suitable for applications involving limited, infrequent data transfers. But to make it suitable for applications involving high data rate and bulk amount of data transfers like video surveillance or monitoring, certain modifications are necessary. As the WSN stack is based on IEEE 802.15.4 standard regulations, when it is implemented on a IEEE 802.15.4 compliant hardware it may not be possible to serve the above purpose. Thus in this proposal, to achieve high data rate, the WSN stack is imported on to the IEEE 802.11 enabled hardware by making suitable modifications into the protocol stack. Even though the IEEE 802.11 based hardware consumes higher power, the WSN stack is suitably tailored to mitigate the excess power requirement for the data transfer by using some power conservative techniques. To make the system more power conservative new node deployment scheme, range selection method, power conservative microcontroller sleep states, block acknowledgement methods are also introduced. The features like higher bandwidth and buffer capability of the transceiver are explored in this proposal to achieve the objectives efficiently. Thus by making the stack simple and power efficient based on IEEE 802.15.4 standard and importing on to IEEE 802.11 compliant hardware the application requirements are suitably handled. School of Engineering, Taylor's University.