asm: adaptive voice stream multicast over low-power wireless networks

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	asm: adaptive voice stream multicast over low-power wireless networks
	Li Liqun; Xing Guoliang; Han Qi; Sun Limin
	2012
发表期刊	IEEE Transactions on Parallel and Distributed Systems
ISSN	1045-9219
卷号	23 期号:4 页码:626-633
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 multihop 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 (FEC) 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 test bed of 18 nodes. The experiment results show that ASM can achieve satisfactory multicast voice quality in dynamic environments while incurring low-communication overhead. © 2012 IEEE.; 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 multihop 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 (FEC) 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 test bed of 18 nodes. The experiment results show that ASM can achieve satisfactory multicast voice quality in dynamic environments while incurring low-communication overhead. © 2012 IEEE.
收录类别	EI ; SCI
关键词	Access Control Algorithms Equipment Testing Experiments Forestry Multicasting Trees (Mathematics) Wireless Networks
部门归属	(1) Institute of Software Chinese Academy of Sciences Graduated University of Chinese Academy of Sciences 4# South Fourth Street Zhong Guan Cun Beijing 100190 China; (2) Department of Computer Science and Engineering Michigan State University 3115 Engineering Building East Lansing MI 48824-1226 United States; (3) Department of Math and Computer Sciences Colorado School of Mines 1015 14th Street Golden CO 80401 United States; (4) Institute of Software Chinese Academy of Sciences 4# South Fourth Street Zhong Guan Cun Beijing 100190 China
学科领域	Computer Science ; Engineering
资助者	Program of National Natural Science of China 60933011, 61073014; State Key Development Program for Basic Research of China 2011CB302902; US National Science Foundation (NSF) CNS-0916576
语种	英语
WOS记录号	WOS:000300981100007
引用统计
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/14924
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Li Liqun,Xing Guoliang,Han Qi,et al. asm: adaptive voice stream multicast over low-power wireless networks[J]. IEEE Transactions on Parallel and Distributed Systems,2012,23(4):626-633.
APA	Li Liqun,Xing Guoliang,Han Qi,&Sun Limin.(2012).asm: adaptive voice stream multicast over low-power wireless networks.IEEE Transactions on Parallel and Distributed Systems,23(4),626-633.
MLA	Li Liqun,et al."asm: adaptive voice stream multicast over low-power wireless networks".IEEE Transactions on Parallel and Distributed Systems 23.4(2012):626-633.