公开(公告)号：US20090060521A1

公开(公告)日：2009-03-05

申请号：US12053189

申请日：2008-03-21

Applicant: Huafeng LIN ,  Fan YU

Inventor： Huafeng LIN ,  Fan YU

IPC: H04B10/00

CPC classification number: H04J14/0226 ,  H04B10/2587 ,  H04B10/272 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J2014/0253 ,  H04Q11/0067 ,  H04Q2011/0032 ,  H04Q2011/0035

Abstract: A method for data transfer in an optical network, including: amplitude modulating, by a central office, an optical carrier by a downstream data with a first rate to generate a downstream optical signal carrying the downstream data; sending the downstream optical signal to a user terminal; obtaining, by the user terminal, the downstream data from the downstream optical signal; amplitude modulating, by the user terminal, the downstream optical signal by an upstream data with a second rate to generate an upstream optical signal, wherein the ratio of the first rate to the second rate is greater than 1; sending the upstream optical signal to the central office; and receiving, by the central office, the upstream optical signal, and obtaining, by the central office, the upstream data from the upstream optical signal. Furthermore, the present invention discloses a system and device for data transfer in the optical network. With the invention, the complexity of the system may be effectively reduced, and the cost of the device may be lowered.

Abstract translation: 一种用于光网络中的数据传输的方法，包括：由中心局通过下行数据以第一速率对光载波进行幅度调制，以产生携带下行数据的下行光信号; 将下行光信号发送到用户终端; 由用户终端从下游光信号获取下行数据; 用户终端通过具有第二速率的上行数据对下游光信号进行幅度调制，以产生上行光信号，其中第一速率与第二速率的比率大于1; 向中心局发送上行光信号; 并且由中心局接收上游光信号，并且由中心局接收来自上游光信号的上行数据。 此外，本发明公开了一种用于光网络中的数据传输的系统和装置。 利用本发明，可以有效地减少系统的复杂性，并且可以降低设备的成本。

公开(公告)号：US20080044177A1

公开(公告)日：2008-02-21

申请号：US11834340

申请日：2007-08-06

Applicant: Wei HUANG ,  Jun ZHAO ,  Fan YU ,  Wei LIN

Inventor： Wei HUANG ,  Jun ZHAO ,  Fan YU ,  Wei LIN

IPC: H04B10/08

CPC classification number: H04J3/1694

Abstract: Embodiments of the present invention disclose a method for detecting an upstream timeslot conflict in a Passive Optical Network (PON). An Optical Line Terminal (OLT) detects a timeslot conflict in an upstream timeslot. An OLT is provided also, including an optical receiver, an optical transmitter, a control unit and a detection unit. The detection unit receives an optical signal from the optical receiver, samples instantaneous optical power of the optical signal in an upstream timeslot, compares the instantaneous optical power with normal upstream optical power of the upstream timeslot, and detects that a timeslot conflict occurs in the upstream timeslot when the instantaneous optical power exceeds normal upstream optical power of the upstream timeslot. Embodiments of the present invention make the costs lower to detect an upstream timeslot conflict in the PON.

Abstract translation: 本发明的实施例公开了一种用于检测无源光网络（PON）中的上行时隙冲突的方法。 光线路终端（OLT）检测上行时隙中的时隙冲突。 还提供OLT，包括光接收器，光发射器，控制单元和检测单元。 检测单元从光接收机接收光信号，对上行时隙中的光信号的瞬时光功率进行采样，将瞬时光功率与上行时隙的正常上行光功率进行比较，并检测到上行时隙发生冲突 瞬时光功率超过上游时隙的上行光功率的时隙。 本发明的实施例使检测PON中的上行时隙冲突成本更低。