Design and Implementation of AIRF: A Anycast-Based Integrated Routing Framework for WSNs

摘要

In wireless sensor networks (WSNs), asynchronoussleep wake scheduling protocols can significantlyreduce energy consumption without incurring the communicationoverhead. However, the savings could come at asignificant cost in delay performance. In this paper, we consideranycast-based integrated routing framework (AIRF)to reduce the cost in delay performance of communicationsin multihop WSNs. Without tight time synchronization orknown geographic information, AIRF provides low-delaycost route. We implement a low-overhead AIRF modulein TinyOS kernel by modifying BLIP protocol stack, i.e.,the Berkeley Low-power IP stack; as demonstrated, thisimplementation can be incorporated into existing routingprotocols with the least effort. We describe in detail theformat of AIRF message, the dynamic updating processof mapping record information, and anycast data flowunder TinyOS. And then, we present the anycast groupmanagement system. Finally, we analyze the applicationperformance of AIRF in balancing network load, networklifetime, and delay performance.