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ICDCS
2009
IEEE

QVS: Quality-Aware Voice Streaming for Wireless Sensor Networks

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QVS: Quality-Aware Voice Streaming for Wireless Sensor Networks
Recent years have witnessed the pilot deployments of audio or low-rate video wireless sensor networks for a class of mission-critical applications including search and rescue, security surveillance, and disaster management. In this paper, we report the design and implementation of Quality-aware Voice Streaming (QVS) for wireless sensor networks. QVS is built upon SenEar, a new sensor hardware platform we developed for high-bandwidth wireless audio communication. QVS comprises several novel components, which include an empirical model for online voice quality evaluation and control, dynamic voice compression/duplication adaptation for lossy wireless links, and distributed stream admission control that exploits network capacity for rate allocation. We have extensively tested QVS on a 20-node network deployment. Our experimental results show that QVS delivers satisfactory voice quality under a range of realistic settings while achieving high network capacity utilization.
Liqun Li, Guoliang Xin, Limin Sun, Yan Liu
Added 08 Mar 2010
Updated 08 Mar 2010
Type Conference
Year 2009
Where ICDCS
Authors Liqun Li, Guoliang Xin, Limin Sun, Yan Liu
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