Multi-Level Data Arrangement Algorithm for Can Data Compression

Controller area network (CAN) has become the most widely used protocol in automotive networks due to its efficiency and robustness. The number of electronic control units (ECUs) in modern vehicles continually increases as more control functions are needed. CAN buses with limited bandwidths may be overloaded due to increases in bus load. Therefore, reducing the bus load is important in high-end vehicles. In this paper, we propose a multi-level data arrangement algorithm to effectively reduce the amount of transmitted data. Our experimental results show that the proposed algorithm improves the data compression ratio by approximately 25 % compared to previous algorithms.