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http://dx.doi.org/10.3745/KIPSTC.2007.14-C.4.371

Design of a Real-time Sensor Node Platform for Efficient Management of Periodic and Aperiodic Tasks  

Kim, Byoung-Hoon (부산대학교 컴퓨터공학과)
Jung, Kyung-Hoon (부산대학교 U-Port 정보기술 산학공동사업단)
Tak, Sung-Woo (부산대학교 컴퓨터 및 정보통신연구소)
Publication Information
The KIPS Transactions:PartC / v.14C, no.4, 2007 , pp. 371-382 More about this Journal
Abstract
In this paper, we propose a real-time sensor node platform that efficiently manages periodic and aperiodic tasks. Since existing sensor node platforms available in literature focus on minimizing the usage of memory and power consumptions, they are not capable of supporting the management of tasks that need their real-time execution and fast average response time. We first analyze how to structure periodic or aperiodic task decomposition in the TinyOS-based sensor node platform as regard to guaranteeing the deadlines of ail the periodic tasks and aiming to providing aperiodic tasks with average good response time. Then we present the application and efficiency of the proposed real-time sensor node platform in the sensor node equipped with a low-power 8-bit microcontroller, an IEEE802.15.4 compliant 2.4GHz RF transceiver, and several sensors. Extensive experiments show that our sensor node platform yields efficient performance in terms of three significant, objective goals: deadline miss ratio of periodic tasks, average response time of aperiodic tasks, and processor utilization of periodic and aperiodic tasks.
Keywords
Real-time Sensor Node Platform; Task-based lightweight TCP/IP Protocol stack; Multitask-based Software Components; Sensor Networks; Ubiquitous Computing;
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