Paper Details

The attention is on critical event monitoring in wireless sensor networks (WSNs), where only a smallnumber of packets need to be transmitted most of the time. When a critical event occurs, an alarm message should bebroadcast to the entire network as soon as possible. To prolong the network lifetime, some Wakeup scheduling methodsare always employed in WSNs, resulting in significant broadcasting delay, especially in large scale WSNs. A novelWakeup scheduling method is proposed to reduce the delay of alarm broadcasting from any sensor node in WSNs.Specifically, two determined traffic paths are designed for the transmission of alarm message, and level-by-level offsetbased wake-up pattern according to the paths, respectively. When a critical event occurs, an alarm is quickly transmittedalong one of the traffic paths to a center node, and then it is immediately broadcast by the center node along anotherpath without collision. Therefore, two of the big contributions are that the broadcasting delay is independent of thedensity of nodes and its energy consumption is ultra low. Exactly, the upper bound of the broadcasting delay is only 3D+ 2L, where D is the maximum hop of nodes to the center node, L is the length of Wakeup duty cycle, and the unit is thesize of time slot

Syed Arshid Ahmad Simnani, Idris Afzal Shah, Hamid Hussain Haqani, Faisal Rasheed Lone, “Wake-up Scheduling for Event Monitoring in Wireless Sensor Networks”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 13, pp. -, January 2018.