Title | ||
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Distributed Systematic Network Coding for Reliable Content Uploading in Wireless Multimedia Sensor Networks. |
Abstract | ||
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Recently, the wireless sensor network paradigm is shifting toward research aimed at enabling the robust delivery of multimedia content. A challenge is to deliver multimedia content with predefined levels of Quality of Service (QoS) under resource constraints such as bandwidth, energy, and delay. In this paper, we propose a distributed systematic network coding (DSNC) scheme for reliable multimedia content uploading over wireless multimedia sensor networks, in which a large number of multimedia sensor nodes upload their own content to a sink through a cluster head node. The design objective is to increase the reliability and bandwidth-efficient utilization in uploading with low decoding complexity. The proposed scheme consists of two phases: in the first phase, each sensor node distributedly encodes the content into systematic network coding packets and transmits them to the cluster head; then in the second phase, the cluster head encodes all successfully decoded incoming packets from multiple sensor nodes into innovative systematic network coding packets and transmits them to the sink. A bandwidth-efficient and channel-aware error control algorithm is proposed to enhance the bandwidth-efficient utilization by dynamically determining the optimal number of innovative coded packets. For performance analysis and evaluation, we firstly derive the closed-form equations of decoding probability to validate the effectiveness of the proposed uploading scheme. Furthermore, we perform various simulations along with a discussion in terms of three performance metrics: decoding probability, redundancy, and image quality measurement. The analytical and experimental results demonstrate that the performance of our proposed DSNC outperforms the existing uploading schemes. |
Year | DOI | Venue |
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2018 | 10.3390/s18061824 | SENSORS |
Keywords | Field | DocType |
wireless multimedia sensor networks,network coding,multimedia uploading,low-latency communication,Internet of Things | Sensor node,Linear network coding,Network packet,Upload,Computer network,Quality of service,Electronic engineering,Redundancy (engineering),Engineering,Decoding methods,Wireless sensor network | Journal |
Volume | Issue | Citations |
18 | 6.0 | 0 |
PageRank | References | Authors |
0.34 | 20 | 3 |
Name | Order | Citations | PageRank |
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Phuc Chau | 1 | 9 | 3.21 |
Jitae Shin | 2 | 304 | 43.50 |
Jaehoon Jeong | 3 | 387 | 34.96 |