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xDSL LINE QUALITY CONTROL DEVICE, xDSL TRANSMISSION METHOD SELECTION DEVICE, AND xDSL LINE QUALITY MONITORING DEVICE

机译：xDSL线路质量控制设备，xDSL传输方法选择设备和xDSL线路质量监视设备

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摘要

The present invention can be applied to the xDSL communication technique for connecting a user to a center by a telephone line of two-line type so as to perform interactive communication. Especially in the xDSL, the line quality is judged to be good or bad not by monitoring the line signal noise ratio (SNR) margin alone or the signal attenuation ratio (ATT) alone but by monitoring the following elements to improve the line quality and the transmission speed. More specifically, in addition to the signal noise ratio (SNR) margin and the signal attenuation ratio (ATT), (a) interleave delay (error correction depth) and interleave correction time (error correction time), (b) periodical CRC error, loss of signal (LOS), loss of frame (LOF) by performance information, and (c) transmission speed are monitored. By monitoring the signal noise ratio (SNR) margin, the signal attenuation ration (ATT), and the aforementioned (a) to (c), it is possible to improve the line quality and the transmission speed.

机译：本发明可以应用于用于通过两线型电话线将用户连接到中心以进行交互通信的xDSL通信技术。尤其是在xDSL中，不是仅通过监视线路信号噪声比（SNR）余量或仅通过信号衰减率（ATT）而是通过监视以下元素以改善线路质量和可靠性来判断线路质量的好坏。传输速度。更具体地说，除了信号噪声比（SNR）余量和信号衰减比（ATT），（a）交织延迟（纠错深度）和交织校正时间（纠错时间），（b）周期性CRC错误，监视性能信息造成的信号丢失（LOS），帧丢失（LOF）和（c）传输速度。通过监视信号噪声比（SNR）裕度，信号衰减率（ATT）以及上述（a）至（c），可以改善线路质量和传输速度。

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公开/公告号WO2004068831A1

专利类型
公开/公告日2004-08-12

原文格式PDF
申请/专利权人 FUJITSU ACCESS LIMITED;SAKAMOTO SHINICHI;FUNAKI HIROSHI;YAMASHITA TAKASHI;
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申请/专利号WO2003JP00898
发明设计人 YAMASHITA TAKASHI;SAKAMOTO SHINICHI;FUNAKI HIROSHI;
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申请日2003-01-30
分类号H04M11/06;H04L29/02;
国家 WO
入库时间 2022-08-21 22:54:48

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