Increasing Throughput for WiseMAC

The WiseMAC protocol is one of the most energy-efficient medium access control protocols for wireless sensor networks. However, in many typical wireless sensor network scenarios, throughput is limited when high traffic occurs, e.g., if many sensors detect and report an event to the base station. The paper proposes to extend and improve the optional more bit mechanism in WiseMAC. It allows bottleneck nodes to stay awake in case of high traffic instead of strictly sleeping periodically. Simulations show the effectiveness of the mechanism.