Group Events Ordering by Double Confirmations in Wireless Sensor and Actuator Networks

Abstract

ABSTRACT In wireless sensor and actuator networks, events ordering is an important issue since the ordering of monitored events actuator received could determine the correct interpretation of what event is occurring in the monitored environment. In the real situation, events may belong to different groups. Each group may be co-related with other groups based on the time ordering, such as the group-related events ordering we defined. However, the existing events ordering algorithms addressed nothing for group-related events ordering. Hence, we proposed a group events ordering by double confirmations, GOBDC, to treat the group-related events ordering in correct group order. Simulation results demonstrated that the rate of the correct events ordering of GOBDC could be up to 100%. Once the number of events or the probability of event with a delay increased, GOBDC still guaranteed the rate of the correct events ordering to be 100%.