Abstract: Wireless sensor network (WSN) suffer from the problems of congestion, leading to packet loss and excessive energy consumption. This paper propose an improved energy-efficient ant-based routing (IEEABR) algorithm to find optimization path by taking into account the packet queue length of media access control (MAC) layer, which is the degree of congestion information. Simulation results show that IEEABR has several features such as high packet delivery ratio, low overall latency and high throughput, therefore is suitable for WSN routing protocol.

Key words: congestion information, energy-efficient ant-based routing (EEABR), improved EEABR (IEEABR), wireless sensor network (WSN)