On the Design and Implementation of a Tailored DHCP Protocol for Wireless Sensor Networks based on FreeOS

摘要

Based on the principle of Dynamic Host Configuration Protocol (DHCP), this paper proposes a new implementation of a tailored DHCP protocol used for IP address management in wireless sensor networks (WSN). Several key design issues, such as frame structure of tailored DHCP packets, address assignment scheme, client/server processing program and timing processing program are introduced. An experimental system is designed and implemented via embedded FreeOS micro OS and tailored DHCP program over two types of sensor nodes. Experimental results show that the proposed protocol can successfully support interconnection, packets exchange and IP address assigning and retrieving among sensor nodes within IP-based networks.