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Information 2017, 8(3), 87; doi:10.3390/info8030087

Efficient Listening and Sleeping Scheduling Mechanism Based on Self-Similarity for Duty Cycle Opportunistic Mobile Networks

1
School of Software, Central South University, Changsha 410083, China
2
Department of Computer Science, Missouri State University, Springfield, MO 65897, USA
This paper is an extended version of our paper published in INFOCOM17 WKSHPS MobiSec 2017, Atlanta, GA, USA, 1–4 May 2017.
*
Authors to whom correspondence should be addressed.
Received: 23 May 2017 / Revised: 5 July 2017 / Accepted: 14 July 2017 / Published: 20 July 2017
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Abstract

In opportunistic mobile networks (OppNets), nodes should be in listening state to discover the neighbors for opportunistic message forwarding. While in OppNets, contacts between nodes are sparse, most of the node’s energy is consumed in idle listening state, which highlights the need for energy saving in contact probing. Duty cycle operation can be applied to address this problem. However, it may cause the degradation of network connectivity when the state of node is turned to be sleeping. In this paper, we propose an adaptive scheduling mechanism based on self-similarity, in which LMMSE predictor is used to predict the future contact information. The state of a node will be set as listening or sleeping adaptively according to the predicted result of future contacts with other nodes. Finally, we validate the effectiveness of the proposed mechanism by conducting a large amount of trace-driven simulations, which show that the proposed mechanism outperforms the random working mechanism and periodical working mechanism in terms of the number of effective contacts, delivery ratio, transmission delay and cost. View Full-Text
Keywords: opportunistic mobile networks; self-similarity; duty cycle; scheduling mechanism opportunistic mobile networks; self-similarity; duty cycle; scheduling mechanism
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zeng, F.; Dou, Y.; Chen, Z.; Liu, H. Efficient Listening and Sleeping Scheduling Mechanism Based on Self-Similarity for Duty Cycle Opportunistic Mobile Networks. Information 2017, 8, 87.

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