asm: adaptive voice stream multicast over low-power wireless networks
文献类型：期刊论文
| 作者 | Li Liqun ; Xing Guoliang ; Han Qi ; Sun Limin |
| 刊名 | IEEE Transactions on Parallel and Distributed Systems
 |
| 出版日期 | 2012 |
| 卷号 | 23期号:4页码:626-633 |
| 关键词 | Access control Algorithms Equipment testing Experiments Forestry Multicasting Trees (mathematics) Wireless networks |
| ISSN号 | 1045-9219 |
| 中文摘要 | 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 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. |
| 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 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. |
| 学科主题 | Computer Science ; Engineering |
| 收录类别 | EI ; SCI |
| 资助信息 | 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 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iscas.ac.cn/handle/311060/14924]  |
| 专题 | 软件研究所_软件所图书馆_期刊论文 |
| 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. |
入库方式： OAI收割
来源：软件研究所
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