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Adaptive packet sizing for OTAP of PSoC based interface board in WSN

Adaptive packet sizing techniques are widely used in wireless communication to enhance the link reliability. Typically, shorter packets are less error prone than longer packets. Adaptive packet size technique is used in IEEE 802.11 wireless network to enhance link reliability and packet delivery ratio. In this work, we adopt this technique to work in IEEE 802.15.4 based networks, and specifically in wireless sensor networks. A special protocol is designed to implement adaptive packet size transmission in WSN. In WSN, different mote designs and implementations are relying on the use of programmable circuits in their sensor interface boards. Delivering new firmware to these circuits by means of OTAP (Over The Air Programming) requires a reliable link between base station and target mote. Such reliable link can be achieved using the proposed adaptive packet sizing protocol. A testbed based on such scenario is constructed and the proposed protocol was tested to send new firmware update data to the target mote in its distant location under different environmental conditions.