METHOD FOR ACTIVITY-BASED POWER SAVING SCHEDULING IN AD-HOC NETWORK

摘要

The present invention relates to an activity-based scheduling method between mobile terminals in an ad hoc wireless network. (A) The coordinator periodically transmits a beacon signal to synchronize the time of all mobile terminals in the ad hoc wireless network. During the ATIM window period set for a certain time period, all mobile terminals are activated and a mobile terminal wishing to send a task transmits an ATIM message recording a length of a task to be transmitted and receives all ATIM messages in an ad hoc wireless network. step; (b) the coordinator calculating terminal activity for each mobile terminal, task activity and minimum activity for each task; (c) The coordinator preferentially selects a task having the smallest value of the minimum activity, and if there are two or more tasks having the smallest value of the minimum activity, the coordinator selects a task having the smallest value of the task activity. step; (d) The coordinator determines the task transmission order in the order of the selected tasks, and for the remaining tasks except for the task selected in the step (c) until the transmission order of all tasks is determined, the (b) and ( c) repeating the step; And (e) the coordinator broadcasting the scheduling control packet in which the task transmission order is recorded to all mobile terminals. Therefore, according to the present invention, yield and energy efficiency can be increased.