Internetworking Wireless Nodes to A Control Area Network

This paper discusses the design and performance requirements for the interconnection of wireless nodes to a standard CAN bus environment. It is focused on the network architecture as a single centralised cell consisting of a central node and wireless terminals. The central node provides data communication between the CAN and the wireless network. It maintains a selflearning algorithm for the frame filtering and forwarding requirements. The Medium Access Control Protocol used for the wireless network is specifically designed for supporting prioritised frame transmission in the wireless channel. The prioritisation is accomplished by using different sequence numbers which are added to each individual frame based on the CAN identifier. The performance of the system is analysed and presented in terms of probability, delay and channel utilisation under various traffic conditions.