The International Journal of Advanced Research Foundation (IJARF)
Recent years have seen the emergence of wireless sensor networks that must support real-time queries of physical environments. This paper proposes Real-Time Query Scheduling (RTQS), a novel approach to conflict-free transmission scheduling for real-time queries in wireless sensor networks. First, the authors show that there is an inherent trade-off between latency and real-time capacity in query scheduling. They then present three new real-time schedulers. The non-pre-emptive query scheduler supports high real-time capacity but cannot provide low response times to high-priority queries due to priority inversions.