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JiTS: Just-in-Time Scheduling for Real-Time Sensor Data Dissemination Ke Liu, Nael Abu-Ghazaleh and Kyoung-Don Kang
 

Summary: JiTS: Just-in-Time Scheduling for Real-Time Sensor Data Dissemination
Ke Liu, Nael Abu-Ghazaleh and Kyoung-Don Kang
Computer Science Dept., SUNY Binghamton
{kliu,nael,kang}@cs.binghamton.edu
Abstract
Most existing real-time protocols for sensor data dissem-
ination use packet scheduling schemes to prioritize pack-
ets according to their deadlines. However, packet priori-
tization by itself cannot completely support real-time data
dissemination requirements. In this paper, we propose new
Just-in-Time Scheduling (JiTS) algorithms that take advan-
tage of the available slack, if any, to reduce contentions
and improve real-time performance by judiciously delaying
packets as long as their deadlines are not missed. Specif-
ically, we explore several policies for allocating the slack
among multiple hops, including a non-linear policy where
packets are non-uniformly delayed at intermediate nodes
to account for expected higher contentions as packets get
closer to the sink(s). Notably, our JiTS policies require nei-
ther lower layer support nor synchronization among sensor

  

Source: Abu-Ghazaleh, Nael B. - Department of Computer Science, State University of New York at Binghamton
Kang, Kyoung-Don - Department of Computer Science, State University of New York at Binghamton

 

Collections: Computer Technologies and Information Sciences