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题名:
adaptive voice stream multicast over low-power wireless networks
作者: Liqun Li ; Guoliang Xing ; Qi Han ; Limin Sun
会议文集: Proceedings - Real-Time Systems Symposium
会议名称: 31st IEEE Real-Time Systems Symposium, RTSS 2010
会议日期: 40850
出版日期: 2010
会议地点: San Diego, CA
关键词: ad hoc voice communication ; adaptive voice stream multicast ; coding redundancy ratio ; coordination rules ; disaster response ; distributed admission control algorithm ; forward error correction ; forwarder selection ; low-power wireless networks ; security surveillance ; tree-based opportunistic routing protocol ; voice quality ; ad hoc networks ; audio streaming ; forward error correction ; multicast communication ; routing protocols ; telecommunication congestion control ; voice communication
出版地: United States
ISSN: 10528725
ISBN: 978-0-7695-4298-0
部门归属: Inst. of Software, Chinese Acad. of Sci., Beijing, China
主办者: IEEE Comput. Soc. Tech. Comm. Real-Time Syst.
英文摘要: Low-power Wireless Networks (LWNs) have become increasingly available for mission-critical applications such as security surveillance and disaster response. In particular, emerging low-power wireless audio platforms provide an economical solution for ad hoc voice communication in emergency scenarios. In this paper, we develop a system called Adaptive Stream Multicast (ASM) for voice communication over multi-hop LWNs. ASM is composed of several novel components specially designed to deliver robust voice quality for multiple sinks in dynamic environments: 1) an empirical model to automatically evaluate the voice quality perceived at sinks based on current network condition, 2) a feedback-based Forward Error Correction scheme where the source can adapt its coding redundancy ratio dynamically in response to the voice quality variation at sinks, 3) a Tree-based Opportunistic Routing (TOR) protocol that fully exploits the broadcast opportunities on a tree based on novel forwarder selection and coordination rules, and 4) a distributed admission control algorithm that ensures the voice quality guarantees when admitting new voice streams. ASM has been implemented on a low-power hardware platform and extensively evaluated through experiments on a testbed of 18 nodes.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.iscas.ac.cn/handle/311060/8644
Appears in Collections:信息安全国家重点实验室_会议论文

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Recommended Citation:
Liqun Li,Guoliang Xing,Qi Han,et al. adaptive voice stream multicast over low-power wireless networks[C]. 见:31st IEEE Real-Time Systems Symposium, RTSS 2010. San Diego, CA. 40850.
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