Distributed antenna system with location determination based on pseudo-pilot signals

• US 8,787,401 B1
• Filed: 08/18/2011
• Issued: 07/22/2014
• Est. Priority Date: 08/18/2011
• Status: Expired due to Fees

• Current Assignee: T-Mobile Innovations LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Inventors: Mateski, Christopher J., Hart, Julie A., Falk, Alan, Mott, Darrin
• Primary Examiner(s): Ng, Fan
• Application Number:
  US13/212,476
• Time in Patent Office: 1,069 Days
• Field of Search: 370431-463
• US Class Current: 370/431
• CPC Class Codes: G01S 5/02521 using a radio-map

Abstract

A distributed antenna system comprises a base antenna system and coverage antenna systems. The base antenna system wirelessly receives a network pilot signal and transfers the network pilot signal to a first coverage antenna system and to a second coverage antenna system. The first coverage antenna system wirelessly transfers the network pilot signal and a first pseudo-pilot signal that is correlated to a first location. The second coverage antenna system wirelessly transfers the network pilot signal and a second pseudo-pilot signal that is correlated to a second location. In some examples, user devices translate the pseudo-pilot signals into their correlated locations.

Claims

1. A method of operating a distributed antenna system, the method comprising:

wirelessly receiving a network pilot signal in a base antenna system and transferring the network pilot signal to a first coverage antenna system and to a second coverage antenna system;

wirelessly transferring the network pilot signal and a first pseudo-pilot signal from the first coverage antenna system, wherein the first pseudo-pilot signal is correlated to a first location;

wirelessly transferring the network pilot signal and a second pseudo-pilot signal from the second coverage antenna system, wherein the second pseudo-pilot signal is correlated to a second location.

2. The method of claim 1 wherein:

the first location comprises a first portion of a building;

the second location comprises a second portion of the building; and

the first portion of the building and the second portion of the building are mutually exclusive.

3. The method of claim 1 further comprising:

in a first user communication device, wirelessly receiving the first pseudo-pilot signal and translating the first pseudo-pilot signal into the first location; and

in a second user communication device, wirelessly receiving the second pseudo-pilot signal and translating the second pseudo-pilot signal into the second location.

4. The method of claim 3 wherein the first location comprises a first building and floor combination and the second location comprises a second building and floor combination.

5. The method of claim 3 wherein:

translating the first pseudo-pilot signal into the first location comprises transferring first pseudo-pilot signal information from the first user communication device for delivery to a position system, receiving first location information responsively transferred by the position system, and processing the first location information to identify the first location, wherein the position system processes the first pseudo-pilot signal information to determine and transfer the first location information; and

translating the second pseudo-pilot signal into the second location comprises transferring second pseudo-pilot signal information from the second user communication device for delivery to the position system, receiving second location information responsively transferred by the position system, and processing the second location information to identify the second location, wherein the position system processes the second pseudo-pilot signal information to determine and transfer the second location information.

6. The method of claim 1 wherein wirelessly transferring the network pilot signal and the first pseudo-pilot signal from the first coverage antenna system comprises wirelessly transferring the first pseudo-pilot signal at a higher power level than the network pilot signal.

7. The method of claim 6 further comprising:

in a user communication device, wirelessly receiving the first pseudo-pilot signal and wirelessly transferring a first access request responsive to the first pseudo-pilot signal,

in the user communication device, determining that the first access request was not successful, and in response, wirelessly receiving the network pilot signal and wirelessly transferring a second access request responsive to the network pilot signal;

in the user communication device, translating the first pseudo-pilot signal into the first location responsive to the first pseudo-pilot signal having a higher power than the network pilot signal and the first access request being unsuccessful.

8. The method of claim 7 further comprising:

wirelessly receiving the second access request in the first coverage antenna system;

transferring the second access request from the first coverage antenna system to the base antenna system;

wirelessly transferring the second access request from the base antenna system and responsively receiving an access grant in the base antenna system;

transferring the access grant from the base antenna system to the first coverage antenna system;

wirelessly transferring the access grant from the first coverage antenna system.

9. The method of claim 8 further comprising:

in the user communication device, wirelessly receiving the access grant, and in response, accessing a communication service.

10. The method of claim 9 wherein accessing the communication service comprises wirelessly transferring the first location for delivery to a remote service system.

11. A distributed antenna system comprising:

a base antenna system configured to wirelessly receive a network pilot signal and transfer the network pilot signal to a first coverage antenna system and to a second coverage antenna system;

the first coverage antenna system configured to wirelessly transfer the network pilot signal and a first pseudo-pilot signal, wherein the first pseudo-pilot signal is correlated to a first location; and

the second coverage antenna system configured to wirelessly transfer the network pilot signal and a second pseudo-pilot, wherein the second pseudo-pilot signal is correlated to a second location.

12. The distributed antenna system of claim 11 wherein:

the first location comprises a first portion of a building;

the second location comprises a second portion of the building; and

the first portion of the building and the second portion of the building are mutually exclusive.

13. The distributed antenna system of claim 11 further comprising:

a first user communication device configured to wirelessly receive the first pseudo-pilot signal and translate the first pseudo-pilot signal into the first location;

a second user communication device configured to wirelessly receive the second pseudo-pilot signal and translate the second pseudo-pilot signal into the second location.

14. The distributed antenna system of claim 13 wherein the first location comprises a first building and floor combination and the second location comprises a second building and floor combination.

15. The distributed antenna system of claim 13 wherein:

to translate the first pseudo-pilot signal into the first location, the first user communication device is configured to transfer first pseudo-pilot signal information for delivery to a position system, receive first location information responsively transferred by the position system, and process the first location information to identify the first location, wherein the position system processes the first pseudo-pilot signal information to determine and transfer the first location information; and

to translate the second pseudo-pilot signal into the second location, the second user communication device is configured to transfer second pseudo-pilot signal information for delivery to the position system, receive second location information responsively transferred by the position system, and process the second location information to identify the second location, wherein the position system processes the second pseudo-pilot signal information to determine and transfer the second location information.

16. The distributed antenna system of claim 11 wherein the first coverage antenna system is configured to wirelessly transfer the first pseudo-pilot signal at a higher power level than the network pilot signal.

17. The distributed antenna system of claim 16 further comprising:

a user communication device configured to wirelessly receive the first pseudo-pilot signal and wirelessly transfer a first access request responsive to the first pseudo-pilot signal;

the user communication device configured to determine that the first access request was not successful, and in response, wirelessly receive the network pilot signal and wirelessly transfer a second access request responsive to the network pilot signal;

the user communication device configured to translate the first pseudo-pilot signal into the first location responsive to the first pseudo-pilot signal having a higher power than the network pilot signal and the first access request being unsuccessful.

18. The distributed antenna system of claim 17 wherein:

the first coverage antenna system is configured to wirelessly receive the second access request and transfer the second access request to the base antenna system;

the base antenna system is configured to wirelessly transfer the second access request, responsively receive an access grant, and transfer the access grant to the first coverage antenna system;

the first antenna system is configured to wirelessly transfer the access grant.

19. The distributed antenna system of claim 18 wherein the user communication device is configured to wirelessly receive the access grant, and in response, access a communication service.

20. The distributed antenna system of claim 19 wherein the user communication device is configured to wirelessly transfer the first location for delivery to a remote service system over the communication service.