| Title: | adaptive voice stream multicast over low-power wireless networks |
| Author: | Liqun Li
; Guoliang Xing
; Qi Han
; Limin Sun
|
| Source: | Proceedings - Real-Time Systems Symposium
|
| Conference Name: | 31st IEEE Real-Time Systems Symposium, RTSS 2010
|
| Conference Date: | 40850
|
| Issued Date: | 2010
|
| Conference Place: | San Diego, CA
|
| Keyword: | 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
|
| Publish Place: | United States
|
| ISSN: | 10528725
|
| ISBN: | 978-0-7695-4298-0
|
| Department: | Inst. of Software, Chinese Acad. of Sci., Beijing, China
|
| Sponsorship: | IEEE Comput. Soc. Tech. Comm. Real-Time Syst.
|
| English Abstract: | 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. |
| Language: | 英语
|
| Content Type: | 会议论文
|
| URI: | 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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| 05702239.pdf（370KB） | -- | -- | 限制开放 | -- | 联系获取全文 |
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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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