Reverse-powered transmission device

Patent metadata

Field	Value
Publication number	US-2016191718-A1
Application number	US-201414910790-A
Country	US
Kind code	A1
Filing date	Aug 28, 2014
Priority date	Sep 3, 2013
Publication date	Jun 30, 2016
Grant date	—

Abstract

A transmission device includes a first connecting module for connecting a DC/DC power converter to a telephone wire line or to a CPE wire line, and a second connecting module between the telephone and CPE wire lines, a detection module configured to detect a power feeding request signal on the CPE wire line, and a switching module configured to controls the second connecting module in its open state, and send a power ready signal on the CPE wire line, and a not control the second connecting module and not send a signal on the CPE wire line in a standby-by state, so that a total power consumption of the detection and switching modules is lower than a threshold in a stand-by state and higher in the active state, and the detection module is configured to control the switching module in response to a detection of the power feeding request signal.

First claim

1 . Transmission device comprising:
a CPE wire line for connection to a customer premise equipment, a telephone wire line for connection to a telephone service provider, a DC/DC power converter, a first connecting module for connecting the DC/DC power converter to the telephone wire line or to the CPE wire line, a second connecting module between the telephone wire line and the CPE wire line, having an open state wherein a DC component is blocked and a closed state wherein said DC component is not blocked, a detection module powered by the DC/DC power converter for detecting a power feeding request signal on the CPE wire line, and a switching module powered by the DC/DC converter, having an active state wherein it controls the second connecting module in its open state, and sends a power ready signal on the CPE wire line, and a stand-by state wherein it does not controls the second connecting module and does not send a signal on the CPE wire line, so that a total power consumption of the detection module and the switching module in the stand-by state is lower than a predetermined threshold, and a total power consumption of the detection module and the switching module in the active state is higher than said predetermined threshold,
wherein the detection module comprises means for controlling the switching module from the stand-by state to the active state in response to a detection of said power feeding request signal.

2 . Transmission device according to claim 1 , wherein the detection module comprises means for detecting a power active signal on the CPE wire line and for controlling the first connecting module to connect the DC/DC power converter to the CPE wire line in response to detecting said power active signal.

3 . Transmission device according to claim 1 , comprising:
a data line for connection to a data service provider, a splitter connecting the telephone wire line and the data line to the CPE wire line.

4 . Transmission device according to claim 3 , comprising a conversion module for connecting the data line to an optical link.

5 . Access network comprising a transmission device according to claim 1 .

6 . Access network according to claim 5 , comprising a customer premise equipment having a power injector and means for turning on power injection in response to a power ready signal received from the transmission device.

7 . Access network according to claim 5 , comprising a telephone exchange connected to the transmission device through a POTS line and comprising means for detecting an off-hook state when the current on the POTS line exceed an off-hook threshold, wherein the total power consumption of the detection module and the switching module in the stand-by state correspond to a current on the POTS line lower than said off-hook threshold, and the total power consumption of the detection module and the switching module in the active state correspond to a current on the POTS line higher than said off-hook threshold.

Assignees

• Alcatel Lucent

Inventors

• Hillaert Bart

Classifications

• H04M19/08 Primary

  with current supply sources at the substations (generating ringing current H04M19/04) · CPC title

• H04M19/008

  Using DC/DC converters (DC/DC converters per se H02M3/28) · CPC title

• H04L12/2898

  Subscriber equipments (DSL modems H04M11/062; cable modems H04L12/2801) · CPC title

• H04L12/10

  Current supply arrangements · CPC title

• Y02D30/70

  in wireless communication networks · CPC title