A Survey on TDMA Slot Scheduling Algorithm for WSNs

Wireless sensor networks (WSN) have a many application such as traffic analysis, environmental monitoring, industrial process monitoring, and civilian and military applications. In wireless sensor networks, contention occurs when two or more nodes are trying to access the channel simultaneously. The declaration causes collisions, which not only affects the reliability and the QoS of the application, but also the lifetime of the network. Most of the current TDMA scheduling techniques try to find an optimal or a sub-optimal schedule, but it take long time to generate that schedule. TDMA scheduling for WSNs, providing the flexibility to trade-off the schedule length with the time the required to create the ccc schedule, as per the requirements of the applications and channel conditions by using existing TDMA-schedule algorithms. In this paper, first outline the several TDMA scheduling algorithm which are proposed for sensor networks. Finally, point out open research issue with regard to TDMA scheduling algorithm.