Radio frequency signal distribution using data cable system

• US 8,346,163 B2
• Filed: 07/23/2007
• Issued: 01/01/2013
• Est. Priority Date: 07/21/2006
• Status: Expired due to Fees

• Current Assignee: Vodafone Group PLC
• Original Assignee: Vodafone Group PLC
• Inventors: Law, Alan, Bartlett, Allan, Proctor, Toby
• Primary Examiner(s): NGUYEN, HAI V
• Application Number:
  US12/309,426
• Publication Number:
  US 20090247076A1
• Time in Patent Office: 1,989 Days
• Field of Search: 455/20
• US Class Current: 455/20
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels

Abstract

A system for distributing radio frequency signals using a data cable system includes a method and components that receive a radio frequency (RF) signal, identify at least one unoccupied channel on the data cable system, convert the RF signal to the frequency associated with an unoccupied channel as a converted signal, insert the converted signal into the cable, extract the converted signal from the cable as an extracted signal, convert the extracted signal to a transmission frequency as a transmission signal, and transmit the transmission signal at the transmission frequency.

Claims

1. A method for distributing radio frequency signals using a data cable system, comprising:

receiving a radio frequency (RF) signal;

identifying at least one unoccupied channel on the data cable system;

identifying a passband of the data cable system, wherein the at least one unoccupied channel is selected within the passband;

converting the RF signal to a frequency associated with the at least one unoccupied channel as a converted signal;

inserting the converted signal into a cable of the data cable system;

indicating the frequency of the converted signal, wherein indicating the frequency of the converted signal is performed by inserting a spread signal into the cable, the spread signal providing the channel identification data for the frequency associated with the at least on unoccupied channel on which the converted signal is placed, wherein the spread signal is spread across at least a portion of the passband;

extracting, using the channel identification data in the spread signal, the converted signal from the cable as an extracted signal;

converting the extracted signal to a transmission frequency as a transmission signal; and

,

transmitting the transmission signal at the transmission frequency.

2. The method for distributing RF signals according to claim 1, wherein the step of identifying at least one unoccupied channel is performed periodically.

3. The method for distributing RF signals according to claim 1, wherein the spread signal is spread across the full passband.

4. The method for distributing RF signals according to claim 1, wherein the spread signal is a low rate spread spectrum signal.

5. The method for distributing RF signals according to claim 1, wherein the RF signals are telecommunications signals.

6. An apparatus for distributing radio frequency signals using a data cable system, comprising:

a receiver that receives a radio frequency (RF) signal;

a channel identifier that identifies at least one unoccupied channel on the data cable system;

a passband identifier that identifies a passband of the data cable system, wherein the at least one unoccupied channel is identified within the passband;

a converter that converts the RF signal to a frequency associated with the at least one unoccupied channel as a converted signal;

a first insertion unit that inserts the converted signal into a cable;

a spreader that generates a spread signal that includes channel identification data indicating the frequency of the converted signal;

a second insertion unit that inserts the spread signal into the cable, the spread signal providing the channel identification data for the frequency associated with the at least one unoccupied channel on which the converted signal is placed, wherein the spread signal is spread across at least a portion of the passband;

an extractor that, using the channel identification data in the spread signal, extracts the converted signal from the cable as an extracted signal;

a transmission converter that converts the extracted signal to a transmission frequency as a transmission signal; and

,

a transmitter that transmits the transmission signal at the transmission frequency.

7. The apparatus for distributing RF signals according to claim 6, wherein the first insertion unit periodically inserts the converted signal into the cable.

8. The apparatus for distributing RF signals according to claim 6, wherein the spread signal is spread across the full passband.

9. The apparatus for distributing RF signals according to claim 6, wherein the spread signal is a low rate spread spectrum signal.

10. The apparatus for distributing RF signals according to claim 6, wherein the RF signals are telecommunications signals.

11. The apparatus for distributing RF signals according to claim 6, wherein the channel identifier periodically identifies the at least one unoccupied channel.