Seamless Streaming Data Delivery in Cluster-Based Wireless Sensor Networks with Mobile Elements


Exploiting mobility improves the energy efficiency of data collection in wireless sensor networks (WSNs) for many applications. As more and more multimedia sensor nodes, equipped with audio and video capture capabilities are employed to characterize a sensing environment, streaming data are becoming increasingly important in WSNs. However, the mobility of MEs poses challenges on how to efficiently provide uninterrupted message delivery for continuous data streams in WSNs. In this paper, we propose a seamless streaming data delivery (SSDD) protocol for multihop cluster-based WSNs with MEs. Different from existing works, we concentrate on the localized mobility support for the delivery of streaming data in hierarchical WSNs. By introducing a cross-cluster handover mechanism and a path redirection scheme, SSDD efficiently maintains the end-to-end connectivity between a source and a ME during data transmission while avoiding most of the overhead in broadcasting the location of the ME as it moves in the sensing field. Extensive evaluation results demonstrate the effectiveness and high scalability of SSDD in terms of both energy efficiency and delivery latency.


Computer Science

Research Center/Lab(s)

Intelligent Systems Center


This work was supported in part by the Academy of Finland under Grant 284806; by the National Natural Science Foundation of China under Grant 61170296, Grant 61190125, and Grant 61300174; by the 973 Program under Grant 2013CB035503; by the China Postdoctoral Science Foundation under Grant 2013M530511 and Grant 2014T70026; and by the Open Foundation of the State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications under Grant SKLNST-2013-1-02.

Keywords and Phrases

Data communication systems; Energy efficiency; Mobile telecommunication systems; Sensor nodes; Cluster based wireless sensor networks; End-to-end connectivity; Evaluation results; High scalabilities; Localized mobility; Message delivery; Multi-hop clusters; Wireless sensor network (WSNs); Wireless sensor networks; Mobile elements (MEs); Multihop cluster-based wireless sensor networks (WSNs); Streaming data delivery

International Standard Serial Number (ISSN)

1932-8184; 1937-9234

Document Type

Article - Journal

Document Version


File Type





© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jun 2016