Wireless network cable assembly

• US 10,305,594 B2
• Filed: 01/16/2018
• Issued: 05/28/2019
• Est. Priority Date: 11/03/2015
• Status: Active Grant

• Current Assignee: OFS Fitel LLC (Furukawa Electric Company Limited)
• Original Assignee: OFS Fitel LLC (Furukawa Electric Company Limited)
• Inventors: Boxer, Mark A, George, John E
• Primary Examiner(s): Wang, Ted M
• Application Number:
  US15/872,156
• Publication Number:
  US 20180198529A1
• Time in Patent Office: 497 Days
• CPC Class Codes: G02B 6/4415 Cables for special applications G02B6/4429, G02B6/4439, G02B6/4479 take precedence
• CPC Class Codes: G02B 6/4416 Heterogeneous cables
• CPC Class Codes: G02B 6/44265 Fibre-to-antenna cables; Auxiliary devices thereof
• CPC Class Codes: G02B 6/4448 Electro-optic
• CPC Class Codes: H04B 10/25756 Bus network topology
• CPC Class Codes: H04B 10/25759 Details of the reception of RF signal or the optical conversion before the optical fibre
• CPC Class Codes: H04J 14/028 WDM bus architectures
• CPC Class Codes: H04J 14/0282 WDM tree architectures

Abstract

An optical fiber-based cable is formed to include pre-manufactured wireless access nodes included at spaced-apart locations along a length of the optical fiber cable. Each wireless access node is formed to include an antenna, a wireless radio transceiver, and an optical transceiver. The cable is formed to include an optical transmission fiber (or fibers) and an electrical power conductor. The optical fiber(s) couples to the optical transceiver within each wireless access node, and a power conductor from the cable terminates at the node and is used to energize both the wireless transceiver and the optical transceiver. The antenna is preferably formed as a sheathing member around at least a portion of components forming the node. Upon deployment, the wireless node portion of the cable is able to provide communication between the cable and wireless devices in its vicinity.

Claims

1. An optical fiber communication cable comprising:

at least one optical fiber disposed in an axial direction along a signal path;

at least one electrical power conductors disposed in the axial direction along the signal path; and

a plurality of embedded wireless access nodes disposed in a spaced-apart arrangement along the signal path, each embedded wireless access node coupled to both the at least one optical fiber and the at least one electrical power conductor, wherein each embedded wireless access node further comprises

at least one RF antenna;

a wireless radio transceiver powered by the at least one electrical power conductor and coupled to the at least one RF antenna, the wireless radio transceiver providing bidirectional communication with wireless devices within range of the RF antenna and converting communications between radio signals and electrical signals;

an optical transceiver powered by the at least one electrical power conductor and coupled to the at least one optical fiber, the optical transceiver connected to the wireless radio transceiver for providing bidirectional communication with the wireless radio transceiver and converting communications between electrical signals and optical signals, with converted optical signals coupled onto the at least one optical fiber,

wherein the plurality of embedded wireless access nodes includes a replacement wireless access node available for use during maintenance of an installed optical fiber cable.

2. The optical fiber communication cable as defined in claim 1 wherein the at least one optical fiber comprises a single optical fiber, with each embedded wireless access node further comprises an optical splitter/combiner for coupling to the single optical fiber.

3. The optical fiber communication cable as defined in claim 2 wherein the optical splitter/power combiner provides bidirectional optical communication with the single optical fiber.

4. The optical fiber communication cable as defined in claim 2 wherein at least one embedded wireless access node includes a wavelength division multiplexer (WDM) for providing bidirectional optical communication with the single optical fiber.

5. The optical fiber communication cable as defined in claim 1 wherein the at least one optical fiber comprises a plurality of optical fibers, with a separate optical couple coupled to each wireless access node of the at least one embedded wireless access node.

6. The optical fiber communication cable as defined in claim 1 wherein the spacing between adjacent wireless access nodes of the plurality of embedded wireless access nodes is essentially the same.

7. The optical fiber communication cable as defined in claim 1 wherein different spacings are used between adjacent embedded wireless access nodes of the plurality of embedded wireless access nodes, the different spacings associated with wireless devices within range of each wireless access node.

8. The optical fiber communication cable as defined in claim 1, wherein at least one group of embedded wireless access nodes is pre-installed within the optical fiber communication cable during its assembly to create an integrated arrangement.

9. The optical fiber communication cable as defined in claim 1, wherein at least one embedded wireless access node is installed during deployment of the optical fiber communication cable.

10. The optical fiber communication cable as defined in claim 1 wherein the optical fiber communication cable is disposed along an aerial installation for utilization with a plurality of wireless devices, the location of each embedded wireless access node based upon geographic locations of the plurality of wireless devices.

11. The optical fiber communication cable as defined in claim 10 wherein one or more of the plurality of embedded wireless access nodes are configured to be attached to utility poles.

12. The optical fiber communication cable as defined in claim 10 wherein one or more of the plurality of embedded wireless access nodes are configured to be coaxial with the communication cable and disposed at locations between utility poles.

13. The optical fiber communication cable as defined in claim 1 wherein the optical fiber communication cable is disposed as an underground installation.

14. The optical fiber communication cable as defined in claim 1 wherein the optical fiber communication cable is disposed within a building as an interior wireless access network.

15. A fiber-to-the-wireless node communication system comprising

an optical communications and power node for communicating with a backbone communication network;

and

a first optical fiber communication cable coupled to the optical communication and power node and distributed along a defined geographic area to communicate with a plurality of wireless communication locations, the first optical fiber communication cable comprising

at least one optical fiber disposed in an axial direction along a signal path for supporting bidirectional optical communication with the optical communications and power node;

at least one electrical power conductors disposed in the axial direction along the signal path and receiving electrical power from the optical communications and power node;

a plurality of embedded wireless access nodes disposed at predetermined locations along the signal path based upon a spacing of the plurality of wireless communication locations, each embedded wireless access node comprising

at least one RF antenna;

a wireless radio transceiver powered by the at least one electrical power conductor and coupled to the at least one RF antenna, the wireless radio transceiver providing bidirectional communication with wireless devices within range of the RF antenna and converting communications between radio signals and electrical signals; and

an optical transceiver powered by the at least one electrical power conductor and coupled to the at least one optical fiber, the optical transceiver providing bidirectional communication with the wireless radio transceiver and converting communications between electrical signals and optical signals, with converted optical signals coupled onto the at least one optical fiber; and

a replacement wireless access node for use as either one of a replacement wireless access node and an additional wireless access node for providing an additional wireless access point.

16. The fiber-to-the-wireless node communication system as defined in claim 15, wherein the communication system further comprises

a second optical fiber communication cable coupled to the first optical fiber communication cable, the second optical fiber communication cable comprising

at least one optical fiber disposed in an axial direction along a signal path for supporting bidirectional optical communication with the optical communications and power node;

at least one electrical power conductors disposed in the axial direction along the signal path and receiving electrical power from the optical communications and power node; and

a plurality of embedded wireless access nodes disposed at predetermined locations along the signal path based upon a spacing of the plurality of wireless communication locations, each embedded wireless access node comprising

at least one RF antenna;

a wireless radio transceiver powered by the at least one electrical power conductor and coupled to the at least one RF antenna, the wireless radio transceiver providing bidirectional communication with wireless devices within range of the RF antenna and converting communications between radio signals and electrical signals; and

an optical transceiver powered by the at least one electrical power conductor and coupled to the at least one optical fiber, the optical transceiver providing bidirectional communication with the wireless radio transceiver and converting communications between electrical signals and optical signals, with converted optical signals coupled onto the at least one optical fiber.

17. The fiber-to-wireless-node communication system as defined in claim 16 wherein the second optical fiber communication cable is coupled to an opposing end termination of the first optical fiber communication cable, extending wireless communication to a larger geographic area.

18. The fiber-to-the-wireless node communication system as defined in claim 17 wherein the system further comprises additional optical fiber communication cables with embedded wireless access nodes concatenated in a series connection to the second optical fiber communication cable.

19. The fiber-to-wireless node communication system as defined in claim 16 wherein the first and second optical fiber communication cables are coupled together in a ring architecture, with each embedded wireless access node configured as a bidirectional device for communicating along both the first optical fiber communication cable and the second optical fiber communication cable.