发明申请
- 专利标题： Reduced SNR handshake signaling in ADSL systems
- 专利标题（中）： 降低ADSL系统中的信号握手信号
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申请号： US10626727申请日： 2003-07-25
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公开(公告)号： US20040141550A1公开(公告)日： 2004-07-22
- 发明人: Patrick Duvaut , Massimo Sorbara , Laurent Francis Alloin
- 主分类号： H04L005/16
- IPC分类号： H04L005/16
摘要：
In an asynchronous digital subscriber line (ADSL) system comprising a central office ADSL Terminating Unit (ATU-C) in bi-directional overlap spectrum discrete multitone (DMT) communication with a remote ADSL Terminating Unit (ATU-R), a method is provided in accordance with the present invention. The method comprises the step of transmitting a first handshake tone at either a first DMT tone or a second DMT tone based at least in part on a distance between the ATU-C and ATU-R. In one embodiment, the first handshake tone is transmitted at the first DMT tone when the distance between the ATU-C and ATU-R is less than 6.2 kilometers and the first handshake tone is transmitted at the second DMT tone when the distance between the ATU-C and ATU-R is greater than or equal to 6.2 kilometers.
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