System and method for a subscriber powered network element

• US 8,543,008 B2
• Filed: 02/28/2010
• Issued: 09/24/2013
• Est. Priority Date: 03/01/2005
• Status: Active Grant

• Current Assignee: Alexander I. Soto, Walter G. Soto
• Original Assignee: Alexander I. Soto, Walter G. Soto
• Inventors: Soto, Alexander I, Soto, Walter G
• Primary Examiner(s): Curs, Nathan
• Assistant Examiner(s): Ngo, Tanya
• Application Number:
  US12/714,543
• Publication Number:
  US 20100150556A1
• Time in Patent Office: 1,304 Days
• Field of Search: 398/71, 398/38, 398/171
• US Class Current: 398/171
• CPC Class Codes: H04B 10/00 Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04B 10/808 Electrical power feeding of an optical transmission system
• CPC Class Codes: H04M 19/08 with current supply sources at the substations generating ringing current H04M19/04

Abstract

A system for powering a network element of a fiber optic wide area network is disclosed. When communication data is transferred between a central office (CO) and a subscriber terminal using a network element to convert optical to electrical (O-E) and electrical to optical (E-O) signals between a fiber from the central office and twisted wire pair, coaxial cable or Ethernet cable transmission lines from the subscriber terminal, techniques related to local powering of a network element or drop site by the subscriber terminal or subscriber premise remote powering device are provided. Certain advantages and/or benefits are achieved using the present invention, such as freedom from any requirement for additional meter installations or meter connection charges and does not require a separate power network.

Claims

1. A method for electrically powering a network element for a wide area network, the network element having at least one optical port for coupling respectively to at least one optical fiber for communicating with a service provider and having at least one electrical port for coupling respectively to at least one electrical wire pair or cable for communicating with a subscriber terminal, and the network element having at least one electrical coupling device coupled to an electrical port for separating an electrical power signal and an electrical data communications signal from a combined electrical WAN signal, and the network element having a communication device electrically coupled to each electrical coupling device for receiving, aggregating and transmitting the electrical data communication signals, and the network element having at least one power converter coupled respectively to an electrical coupling device for accepting the electrical power signal and for converting the electrical power signal for use by the network element, the method for electrically powering the network element comprising the steps of:

(a) accepting through at least one electrical wire pair or cable the combined electrical WAN signal including the electrical power signal and the electrical data communication signal;

(b) decoupling the electrical power signal and the electrical data communication signal from the combined electrical WAN signal by an electrical coupling device;

(c) providing the decoupled electrical data communication signal to the communication device which is disposed to electrically aggregate the electrical data communication signal with the electrical data communication signals from a plurality of subscriber terminals as an aggregated data communication signal;

(d) transmitting an optical representation of the aggregated data communication signal optically through an optical port;

(e) providing the decoupled electrical power signal to the power converter; and

(f) converting the electrical power signal to electrical power by the power converter for use by the network element, whereby

the network element is capable of electrically aggregating communications from subscriber terminals and communicating the electrically aggregated communications to the service provider over the optical fiber and the network element is capable of being electrically powered over the electrical wire pair or cable by a subscriber and the network element is capable of communicating with the subscriber over the same electrical wire pair or cable.

2. The method of claim 1, further comprising the step of:

(a0) applying a predetermined load to an electrical port such that the predetermined resistance load is disposed to being detectable across the electrical wire pairs or cables.

3. The method of claim 1, further comprising the step of:

(g) powering the network element progressively with the addition of each active subscriber terminal coupled over an electrical wire pair or cable to the network element.

4. The method of claim 1, further comprising the step of:

(g) measuring electrical power consumption of the network element.

5. The method of claim 4, further comprising the step of:

(h) reimbursing the subscriber by the service provider for the cost of the electricity consumed by the network element.

6. The method of claim 1, further comprising the step of:

(g) reducing power consumption of the network element by powering down non-essential devices or reducing line rates of communications.

7. The method of claim 2, wherein the predetermined load is selected to convey the power requirements of the network element.

8. A method for transmitting electrical power and data communications from a subscriber terminal for a wide area network, the wide area network having a network element with at least one optical port for coupling respectively to at least one optical fiber for communicating with a service provider and at least one electrical port for coupling respectively to at least one electrical wire pair or cable for communicating with the subscriber terminal, the subscriber terminal having a power source for producing an electrical power signal having a current and a voltage, and the subscriber terminal having a communication device for transmitting and receiving electrical data communications signals, and the subscriber terminal having an electrical coupling device for coupling to the electrical wire pair or cable and for coupling to the power source and for coupling to the communication device and for combining the electrical power signal with the electrical data communications signal as a combined electrical WAN signal onto the electrical wire pair or cable for transmission to the network element, the method for transmitting electrical power and data communication signals from the subscriber terminal at a subscriber premise to the network element of the wide area network comprising the steps of:

(a) providing a detection current derived from the subscriber premise mains power across at least one electrical wire pair or cable sufficient to detect a predetermined load across the electrical wire pair or cable;

(b) providing an electrical power signal across an electrical wire pair or cable responsive to detecting the predetermined load across the electrical wire pair or cable;

(c) coupling the electrical power signal with the electrical data communications signal from the communication device as the combined electrical WAN signal by the electrical coupling device;

(d) transmitting the combined electrical WAN signal to the network element onto the electrical wire pair or cable;

(e) measuring the amount of power provided across the electrical wire pair or cable for the network element for a period of time; and

(f) conveying the measured amount of power provided across the electrical wire pair or cable for the network element to the service provider from the subscriber terminal using a network administration or management message, whereby

the subscriber terminal is capable of providing electrical power derived from the subscriber premise mains power to the network element over the electrical wire pair or cable and the subscriber terminal is capable of electrical data communications with the network element over the same electrical wire pair or cable.

9. The method of claim 8, wherein the electrical coupling device includes one or more means selected from the group consisting essentially of:

a transformer-based circuit;

an optically-based circuit;

a capacitively coupled circuit;

a silicon/integrated circuit-based circuit;

a coupling capacitor;

a coupling transformer;

a center-tapped transformer;

an isolation transformer;

a bridge rectifier;

a blocking inductor;

a common mode choke;

an inductive coupler;

a low pass filter;

a bandpass filter; and

a high-pass filter.

10. The method of claim 8, wherein the communication device is selected from the group consisting essentially of:

a Digital Subscriber Line (xDSL) modem;

a Asymmetrical Digital Subscriber Line (ADSL) modem;

a Asymmetrical Digital Subscriber Line (ADSL2) modem;

a Asymmetrical Digital Subscriber Line (ADSL2+) modem;

a Very-high-bit-rate Digital Subscriber Line (VDSL) modem;

a Very-high-bit-rate Digital Subscriber Line (VDSL2) modem;

a Power Line Carrier modem;

a Power Line Communication modem;

a Data Over Cable Service Specification (DOCSIS) modem;

a Data Over Cable Service Specification 2.0 (DOCSIS 2.0) modem;

a Data Over Cable Service Specification 3.0 (DOCSIS 3.0) modem;

an Ethernet physical layer (PHY) device;

an Ethernet media access control (MAC) device;

a Multimedia over Coax Alliance (MoCA) capable device;

a Multimedia over Coax Alliance 2.0 (MoCA 2.0) capable device; and

a ITU.T G.hn capable device.

11. The method of claim 8, further comprising the step of:

(b1) adjusting the voltage or current of the electrical power signal to predetermined levels to meet the power requirements of the network element responsive to the predetermined load detected across the electrical wire pair or cable.

12. The method of claim 8, further comprising the step of:

(g) monitoring the applied electrical power signal for power drops lasting a predetermined time interval and responsive to a power drop lasting for a predetermined time interval ceasing the transmission of the electrical power signal or the combined electrical WAN signal.

13. A method for electrically powering a network element of a wide area network, the network element having at least one optical port for coupling respectively to at least one optical fiber for communicating with a service provider and having at least one electrical port for coupling respectively to at least one electrical wire pair or cable for communicating with a subscriber terminal at a subscriber premise, and the subscriber terminal having a power source for producing an electrical power signal having a current and a voltage, and the subscriber terminal having a first communication device for transmitting and receiving electrical data communication signals, and the subscriber terminal having a first electrical coupling device for coupling an electrical wire pair or cable and for coupling to the power source and for coupling to the first communication device and for combining the electrical power signal with the electrical data communication signals as a combined electrical WAN signal onto the electrical wire pair or cable for transmission to the network element, and including at the network element a second electrical coupling device for coupling to the electrical wire pair or cable and for separating the electrical power signal and the electrical data communication signals from the combined electrical WAN signal, and including at the network element a second communication device for receiving, aggregating and transmitting electrical data communication signals and coupled to the second electrical coupling device, and including at the network element a power converter for accepting the electrical power signal and for providing electrical power for use by the network element and coupled to the second electrical coupling device, and wherein the network element is capable of communicating with the service provider over an optical fiber, the method for electrically powering the network element comprising the steps of:

(a) applying a predetermined load to an electrical port of the network element such that the predetermined load is disposed to being detectable across a coupled electrical wire pair or cable;

(b) transmitting a detection current derived from the subscriber premise mains power across the electrical wire pair or cable sufficient to detect a predetermined load across the electrical wire or cable;

(c) deriving the electrical power signal having a current and a voltage from the subscriber premise mains power by the subscriber terminal;

(d) transmitting the electrical power signal from the subscriber terminal across the electrical wire pair or cable to the network element responsive to detecting the predetermined load of the network element;

(e) coupling at the subscriber terminal the electrical power signal with the electrical data communication signals from the first communication device as the combined electrical WAN signal;

(f) transmitting the combined electrical WAN signal to the network element through the electrical wire pair or cable;

(g) accepting at the network element the combined electrical WAN signal through the electrical wire pair or cable;

(h) decoupling at the network element the electrical power signal and the electrical data communication signals from the combined electrical WAN signal;

(i) providing at the network element the decoupled electrical data communication signals to the second communication device which is disposed to electrically aggregate the electrical communication signal with electrical data communication signals from a plurality of subscriber terminals as an aggregated data communication signal;

(j) transmitting an optical representation of the aggregated data communication signal optically through an optical port;

(k) providing at the network element the decoupled electrical power signal to the power converter; and

(l) converting at the network element by the power converter the electrical power signal to electrical power for use by the network element, whereby

the network element is capable of communicating with the service provider over the optical fiber and the network element is capable of being electrically powered over the electrical wire pair or cable from the subscriber terminal and the subscriber terminal is capable of communicating with the network element over the same electrical wire pair or cable.

14. A network element for a wide area network adapted to provide services to at least one subscriber terminal, the network element comprising:

at least one optical port for coupling respectively to at least one optical fiber for communicating with a service provider,

at least one electrical port for coupling respectively to at least one electrical wire pair or cable for communicating with at least one subscriber terminal,

at least one electrical coupling device electrically coupled to an electrical port and adapted to support detection of the network element by the subscriber terminal through application of a predetermined load across the electrical wire pair or cable and adapted to decoupling a electrical power signal and an electrical data communications signal from a combined electrical WAN signal received over the electrical wire pair or cable through the electrical port,

a communication device electrically coupled to each electrical coupling device for receiving and transmitting the electrical data communication signals with the subscriber terminal(s) and the communication device electrically coupled to each optical port for receiving and transmitting communications with the service provider and the communication device adapted to electrically aggregate and de-aggregate communications for a plurality of subscriber terminals, and

at least one power converter electrically coupled respectively to an electrical coupling device for accepting the electrical power signal and for converting the electrical power signal for use by the network element, whereby

the network element is powered by the subscriber terminal over an electrical wire pair or cable and the network element communicates electrically with the subscriber terminal over the same electrical wire pair or cable and the network element is disposed to communicate optically with the service provider.

15. The network element of claim 14, wherein the predetermined load is selected to convey the power requirements of the network element.

16. A subscriber terminal for a wide area network, the wide area network having a network element with at least one optical port for coupling respectively to at least one optical fiber for communicating with a service provider and the network element having at least one electrical port for coupling respectively to at least one electrical wire pair or cable for communicating with the subscriber terminal, the subscriber terminal comprising:

a power source for producing an electrical power signal having a current and a voltage and adapted to measure the amount of the electrical power signal produced over a period of time,

a communication device for transmitting and receiving electrical data communications signals and adapted for communicating with the network element and adapted to convey the measured amount of the electrical power signal produced to the serviced provider using a network administration or management message and electrically coupled to the power source, and

an electrical coupling device for electrically coupling to the electrical wire pair or cable and for electrically coupling to the power source and for electrically coupling to the communication device and the electrical coupling device further comprising a device detection circuit adapted to provide a detection current onto the electrical wire pair or cable sufficient to sense a predetermined load on the electrical wire pair or cable and responsive to sensing the predetermined load the electrical coupling device is adapted to provide the electrical power signal onto the electrical wire pair or cable for transmission to the network element and responsive to receiving communications on the electrical wire pair or cable from the network element is adapted to combine the electrical power signal with the electrical data communications signals as a combined electrical WAN signal onto the electrical wire pair or cable for transmission to the network element, whereby

the subscriber terminal is adapted to provide electrical power to the network element over the wire pair or cable and communicates electrically with the network element over the same wire pair or cable.

17. The subscriber terminal of claim 16, wherein the voltage or current of the electrical power signal is adapted to predetermined levels to meet the power requirements of the network element responsive to the predetermined load detected across the electrical wire pair or cable.

18. The subscriber terminal of claim 16, wherein the subscriber terminal monitors the provided electrical power signal for power drops lasting a predetermined time interval and responsive to a power drop lasting for a predetermined time interval ceases the transmission of the electrical power signal.