IP Library Granted Patent US 6,980,768
Granted Patent B2
US 6,980,768 · App. 09/962,758 · Granted Dec 27, 2005

Spread spectrum signal distribution throughout a building

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Quick Facts
Patent No.
US 6,980,768
App. No.
09/962,758
Granted
Dec 27, 2005
Kind
B2
Abstract

The use of spread spectrum signaling distributed through a building ventilation system provides an effective and inexpensive communication system. The ventilation system is disposed within the building to move air throughout at least a portion of the building. An access point relays signals to a telecommunications system outside of the building. At least one antenna in communication with the access point is disposed within the ventilation system. Each antenna transmits and receives spread spectrum signals through the ventilation system.

Claims (59)

1. A communication system for use inside a building comprising:

an access point relaying signals to a telecommunication system outside of the building;

a ventilation system disposed within the building, the ventilation system moving air throughout at least a portion of the building, the ventilation system including at least one passage operative to function as a hollow leaky waveguide; and

at least one antenna disposed within the ventilation system, each antenna in communication with the access point, each antenna operative to transmit and receive spread spectrum signals through the ventilation system.

2. A communication system as in claim 1 wherein the at least one antenna is a plurality of antennas establishing multiple transmission paths for a given spread spectrum signal through the ventilation system.

3. A communication system as in claim 1 further comprising a plurality of receivers, each receiver operative to combine a given spread spectrum signal received through multiple paths.

4. A communication system as in claim 3 wherein the at least one passage is a semirigid aluminum duct.

5. A communication system as in claim 1 wherein at least one antenna is a monopole antenna attached to a magnetic base.

6. A communication system as in claim 1 wherein the ventilation system comprises an area formed between an inner surface defining a work area and an outer structural surface.

7. A communication system as in claim 1 wherein the access point is not located within the building, the communication system further comprising a repeater in electrical communication with the antenna, the repeater relaying spread spectrum signals between the access point and the antenna.

8. A communication system as in claim 1 wherein the spread spectrum signals comprise CDMA signals.

9. A communication system as in claim 1 wherein the spread spectrum signals operate around 1.9 GHz.

10. A communication system as in claim 1 wherein the spread spectrum signals have a bandwidth of at least 1.25 MHz.

11. A method of communicating with a spread spectrum subscriber unit located within a building comprising:

inserting at least one antenna into a building ventilation system;

transmitting a spread spectrum signal from the subscriber unit into the ventilation system;

propagating the spread spectrum signal within the ventilation system;

receiving the transmitted spread spectrum signal from the ventilation system by the at least one antenna; and

transmitting the signal outside of the buildings;

wherein transmitting the signal from the subscriber unit into the ventilation system comprises transmitting the signal through a portion of the ventilation system operating as a hollow leaky waveguide.

12. A method of communicating as in claim 11 further comprising:

receiving a signal from outside of the building;

if the signal is not in spread spectrum format, converting the signal to spread spectrum format;

transmitting the spread spectrum signal through the antenna into the ventilation system;

propagating the spread spectrum signal along multiple paths through the ventilation system; and

receiving the signal from the ventilation system with the subscriber unit.

13. A method of communicating as in claim 11 wherein inserting at least one antenna into the ventilation system of the building comprises magnetically attaching at least one monopole antenna into the ventilation system.

14. A method of communicating as in claim 11 wherein propagating the spread spectrum signal comprises propagating the spread spectrum signal through an area formed between an inner surface defining a work area and an outer structural surface.

15. A method of communicating as in claim 11 wherein propagating the spread spectrum signal comprises propagating the spread spectrum signal along a plurality of paths.

16. A method of communicating as in claim 11 wherein the spread spectrum signals are CDMA signals.

17. A method of communicating with a spread spectrum subscriber unit located within a building comprising:

inserting at least one antenna into a building ventilation system, the ventilation system including at least one passage functioning as a hollow leaky waveguide;

receiving a signal from outside of the building;

if the signal is not in spread spectrum format, converting the signal to spread spectrum format;

transmitting the spread spectrum signal through the antenna into the ventilation system;

propagating the spread spectrum signal along multiple paths through the ventilation system; and

receiving the signal from the ventilation system with the subscriber unit.

18. A wireless local area network for use within a building comprising:

a ventilation system disposed within the building, the ventilation system moving air throughout at least a portion of the building, the ventilation system including at least one passage operative to function as a hollow leaky waveguide;

a plurality of computers disposed within the building, each computer operative to transmit and receive data as spread spectrum signals through the ventilation system;

at least one server, the server providing data related services through spread spectrum signals to the computers; and

an antenna for each server, the antenna disposed within the ventilation system, the antenna sending and receiving spread spectrum signals.

19. A wireless local area network as in claim 18 wherein the antenna is a monopole antenna attached to a magnetic base.

20. A wireless local area network as in claim 18 wherein the at least one passage is a semirigid aluminum duct.

21. A wireless local area network as in claim 18 wherein the ventilation system comprises an area formed between an inner surface defining a work area and an outer structural surface.

22. A wireless local area network as in claim 18 wherein each computer is operative to receive a spread spectrum signal through multiple paths.

23. A wireless local area network as in claim 18 wherein the spread spectrum signals comprise CDMA signals.

24. A wireless local area network as in claim 18 wherein the spread spectrum signals operate around 1.9 GHz.

25. A wireless local area network as in claim 18 wherein the spread spectrum signals have a bandwidth of at least 1.25 MHz.

26. A telecommunication system for use inside a building comprising:

a wireless base station located away from the building;

at least one wireless repeater in communication with the wireless base station;

a ventilation system disposed within the building, the ventilation system moving air throughout at least a portion of the building, the ventilation system including at least one passage operative to function as a hollow leaky waveguide; and

at least one antenna disposed within the ventilation system in communication with each repeater, the antenna operative to transmit and receive spread spectrum signals through the ventilation system.

27. A telecommunication system for use inside a building comprising:

a wireless base station located away from the building, the wireless base station operative to communicate with wireless telecommunication devices through a plurality of sectors;

a plurality of wireless repeaters in communication with the wireless base station, each repeater physically associated with the building, each repeater relaying spread spectrum signals corresponding with one of the base station sectors;

a ventilation system disposed within the building, the ventilation system moving air throughout at least a portion of the building, the ventilation system including at least one passage operative to function as a hollow leaky waveguide; and

a plurality of antennas disposed within the ventilation system, each antenna in communication with one of the repeaters, each antenna operative to transmit and receive spread spectrum signals through the ventilation system along multiple paths, the antennas positioned so as to establish each base station sector in a different portion of the building.

Assignments (5)
SECURITY INTEREST Recorded Jul 11, 2024
From: KYMETA CORPORATION
To: TRINITY CAPITAL INC.
Reel/Frame 068276/0105 →
RELEASE OF SECURITY INTEREST Recorded Mar 25, 2024
From: COMPUTERSHARE TRUST COMPANY, N.A, AS SUCCESSOR TO WELLS FARGO BANK, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
To: QWEST COMMUNICATIONS INTERNATIONAL INC.
Reel/Frame 066885/0917 →
NOTES SECURITY AGREEMENT Recorded Jan 24, 2020
From: QWEST COMMUNICATIONS INTERNATIONAL INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 051692/0646 →
SECURITY INTEREST Recorded Nov 1, 2017
From: QWEST COMMUNICATIONS INTERNATIONAL INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 044652/0829 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 25, 2001
From: AREND, BRIAN L.; SCHWENGLER, THOMAS
To: QWEST COMMUNICATIONS INTERNATIONAL, INC.
Reel/Frame 012206/0397 →