Abstract
This paper considers the data delivery delay problem in wireless sensor networks. The delivery delay is a significant measure when the data freshness is the first concern of users. The goal of this paper is to route delay-sensitive data to mobile nodes (M nodes) within an allowed latency. The data collection system is composed of a set of M nodes amounted on buses, a set of sensor nodes to detect the interested phenomenon and a set of special nodes deployed at bus stops to assist data routing. An optimization-based approach called improved-unusual message delivery path construction (I-UMDPC) is proposed. Considering the actual features of bus operation, two aspects of uncertainties are accounted in our approach: 1) the bus arrival time and 2) the stop duration. Extensive simulations as well as practical experiments on our testbed demonstrate that I-UMDPC is able to route delay-sensitive data reliably and efficiently and performs better than existing work.
Original language | English |
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Article number | 7932837 |
Pages (from-to) | 1528-1536 |
Number of pages | 9 |
Journal | IEEE Internet of Things Journal |
Volume | 4 |
Issue number | 5 |
DOIs | |
Publication status | Published - Oct 2017 |
Externally published | Yes |
Keywords
- Data collection
- delay sensitive
- mobile sinks
- wireless sensor networks (WSNs)
ASJC Scopus subject areas
- Signal Processing
- Information Systems
- Hardware and Architecture
- Computer Science Applications
- Computer Networks and Communications