Objective Speech Quality Assessment Based on Payload Discrimination of Lost Packets for Cellular Phones in NGN Environment
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概要
- 論文の詳細を見る
A feature of services provided in a Next Generation Network (NGN) is that the end-to-end quality is guaranteed. This is quite a challenging issue, given the considerable fluctuation in network conditions within a Fixed Mobile Convergence (FMC) network. Therefore, a novel approach, whereby a network node and a mobile terminal such as a cellular phone cooperate with each other to control service quality is essential. In order to achieve such cooperation, the mobile terminal needs to become more intelligent so it can estimate the service quality, including the users perceptual quality, and notify the measurement result to the network node. Subsequently, the network node implements some kind of service control function, such as a resource and admission control function, based on the notification from the mobile terminal. In this paper, the role of the mobile terminal in such collaborative system is focused on. As a part of a QoS/QoE measurement system, we describe an objective speech quality assessment with payload discrimination of lost packets to measure the users perceptual quality of VoIP. The proposed assessment is so simple that it can be implemented on a cellular phone. We therefore did this as part of the QoS/QoE measurement system. By using the implemented system, we can measure the users perceptual quality of VoIP as well as the network QoS metrics, in terms of criteria such as packet loss rate, jitter and burstiness in real time.
- （社）電子情報通信学会の論文
- 2008-11-01
著者
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Uemura Satoshi
Kddi R&d Lab. Inc. Saitama Jpn
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YAMADA Hideaki
KDDI R&D Laboratories, Inc.
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FUKUMOTO Norihiro
KDDI R&D Laboratories, Inc.
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Nakamura Hajime
Kddi R&d Laboratories
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Fukumoto Norihiro
Kddi R&d Laboratories Inc.
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Yamada Hideaki
Kddi R&d Laboratories Inc.
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Nakamura Hajime
KDDI R & D Laboratories Inc.
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NAKAMURA Hajime
KDDI Corporation
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