发明授权
- 专利标题： Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system
- 专利标题（中）： 多点到双向通信系统中的测距和往返延迟定时调整
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申请号： US12272535申请日： 2008-11-17
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公开(公告)号： US07773537B2公开(公告)日： 2010-08-10
- 发明人: Michael J. Geile , Jeffrey Brede
- 申请人： Michael J. Geile , Jeffrey Brede
- 申请人地址： US MN Eden Prairie
- 专利权人： ADC Telecommunications, Inc.
- 当前专利权人： ADC Telecommunications, Inc.
- 当前专利权人地址： US MN Eden Prairie
- 代理机构： Fogg & Powers LLC
- 主分类号： H04J1/16
- IPC分类号： H04J1/16 ; H04J1/00 ; H04J3/16
摘要：
Systems and methods for ranging adjustments are provided. In one embodiment, a remote service unit comprises: a transceiver communicatively coupled with a host in a multi-point to point configuration, the transceiver configured to communicate with the host via an OFDM waveform; and a multi-carrier modem coupled to the transceiver and configured to demodulate downstream information data from the OFDM waveform, the multi-carrier modem further configured to modulate upstream information data onto the OFDM waveform. The multi-carrier modem modulates upstream information data onto distinct subcarriers of the OFDM waveform, the multi-carrier modem synchronized with the host so that upstream OFDM signals transmitted by the transceiver and other upstream OFDM signals received at the host unit combine to a unified OFDM waveform. The multi-carrier modem adjusts a round trip path delay between the remote service unit and the host based on a path delay correction received from the host unit.