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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Junchao Ma Wei Lou Yanwei Wu Xiang-Yang Li Guihai Chen |
| Copyright Year | 2009 |
| Description | Author affiliation: Dept. of Comput., Hong Kong Polytech. Univ., Kowloon (Junchao Ma; Wei Lou) |
| Abstract | Sleep scheduling is a widely used mechanism in wireless sensor networks (WSNs) to reduce the energy consumption since it can save the energy wastage caused by the idle listening state. In a traditional sleep scheduling, however, sensors have to start up numerous times in a period, and thus consume extra energy due to the state transitions. The objective of this paper is to design an energy efficient sleep scheduling for low data-rate WSNs, where sensors not only consume different amounts of energy in different states (transmit, receive, idle and sleep), but also consume energy for state transitions. We use TDMA as the MAC layer protocol, because it has the advantages of avoiding collisions, idle listening and overhearing. We first propose a novel interference-free TDMA sleep scheduling problem called contiguous link scheduling, which assigns sensors with consecutive time slots to reduce the frequency of state transitions. To tackle this problem, we then present efficient centralized and distributed algorithms that use time slots at most a constant factor of the optimum. The simulation studies corroborate the theoretical results, and show the efficiency of our proposed algorithms. |
| Starting Page | 630 |
| Ending Page | 638 |
| File Size | 572578 |
| Page Count | 9 |
| File Format | |
| ISBN | 9781424435128 |
| ISSN | 0743166X |
| DOI | 10.1109/INFCOM.2009.5061970 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-04-19 |
| Publisher Place | Brazil |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Energy efficiency Time division multiple access Sleep Wireless sensor networks Interference Energy consumption Delay Processor scheduling Media Access Protocol Frequency |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science Electrical and Electronic Engineering |
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