Title :
QVS: Quality-Aware Voice Streaming for Wireless Sensor Networks
Author :
Li, Liqun ; Guoliang Xin ; Sun, Limin ; Liu, Yan
Author_Institution :
Inst. of Software, Chinese Acad. of Sci., China
Abstract :
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.
Keywords :
audio streaming; wireless sensor networks; disaster management; duplication adaptation; dynamic voice compression; quality-aware voice streaming; security surveillance; voice quality evaluation; wireless audio communication; wireless sensor networks; Admission control; Communication system control; Communication system security; Hardware; Mission critical systems; Streaming media; Surveillance; Testing; Wireless communication; Wireless sensor networks; Admission Control; Sensor Networks; Voice Streaming;
Conference_Titel :
Distributed Computing Systems, 2009. ICDCS '09. 29th IEEE International Conference on
Conference_Location :
Montreal, QC
Print_ISBN :
978-0-7695-3659-0
Electronic_ISBN :
1063-6927
DOI :
10.1109/ICDCS.2009.40
