Wireless frequency re-use determination systems and methods

• US 7,280,814 B2
• Filed: 12/12/2006
• Issued: 10/09/2007
• Est. Priority Date: 04/24/2001
• Status: Expired due to Term

• Current Assignee: Bellsouth Intellectual Property Corporation (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Johnson, Derek, Jabbary, Ali, Austin, Mark, Latiolais, Dock
• Primary Examiner(s): NGUYEN, THUAN T
• Application Number:
  US11/609,348
• Publication Number:
  US 20070087742A1
• Time in Patent Office: 301 Days
• Field of Search: 455/278.1, 455/236, 455/63.13, 455/437, 455/442, 455/452.2, 455/295, 455/296, 455/323, 455/269, 455/432.1, 455436-439, 455/447, 455/448
• US Class Current: 455/278.1
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition

Abstract

A method of measuring frequency interference between adjacent cell sites in a wireless telecommunications system. The method includes selecting a frequency in a cell site to be used as a beacon frequency. The method also includes activating the beacon frequency in the cell site and recording, at a telecommunications switch, a signal strength of the beacon frequency as measured by a first wireless device operating in the cell site and a signal strength of the beacon frequency as measured by a second wireless device operating in another cell site. The method further includes determining the frequency interference between the cell site and the other cell site based on the signal strengths.

Claims

1. A wireless device for recording the signal strength of a downlink frequency utilized for calculating the performance of a wireless telecommunications system, comprising:

means for measuring a signal strength of a beacon frequency comprising a selected frequency in a cell site associated with the wireless device; and

means for reporting the measured signal strength of the beacon frequency to the wireless telecommunications system, the measured signal strength being utilized by the wireless telecommunications system to determine a frequency interference between cell sites in the wireless telecommunications system.

2. The wireless device of claim 1, wherein the selected frequency comprises a phantom channel associated with a phantom cell site.

3. The wireless device of claim 1, wherein the selected frequency comprises a least used digital channel in the wireless telecommunications system.

4. The wireless device of claim 1, wherein the means for reporting the measured signal strength of the beacon frequency comprises means for reporting signal strength measurements of each of a plurality of cell sites in a mobile assisted handoff list (MAHO).

5. The wireless device of claim 1 further comprising means for measuring a signal strength of the beacon frequency in a different cell site than the one associated with the wireless device, the different cell site being associated with another wireless device.

6. The wireless device of claim 5, wherein the signal strength of the beacon frequency in the different cell site than the one associated with the wireless device is utilized by the wireless telecommunications system to determine a frequency interference between the cell site and the different cell site.

7. The wireless device of claim 1 further comprising storing the measured signal strength of the beacon frequency.

8. The wireless device of claim 1, wherein the signal strength of the beacon frequency is reported in response to a trigger frequency received from a phantom trigger site in the wireless telecommunications system.

9. A method for recording the signal strength of a downlink frequency utilized for calculating the performance of a wireless telecommunications system on a wireless device, comprising:

measuring a signal strength of a beacon frequency comprising a selected frequency in a cell site associated with the wireless device; and

reporting the measured signal strength of the beacon frequency to the wireless telecommunications system, the measured signal strength being utilized by the wireless telecommunications system to determine a frequency interference between cell sites in the wireless telecommunications system.

10. The method of claim 9, wherein measuring a signal strength of a beacon frequency comprising a selected frequency in a cell site associated with the wireless device comprises measuring a selected frequency comprising a phantom channel associated with a phantom cell site.

11. The method of claim 9, wherein reporting the measured signal strength of the beacon frequency comprises reporting signal strength measurements of each of a plurality of cell sites in a mobile assisted handoff list (MAHO) associated with the wireless device.

12. The method of claim 9 further comprising means for storing the measured signal strength of the beacon frequency on the wireless device.

13. The method of claim 9 further comprising measuring a signal strength of the beacon frequency in a different cell site than the one associated with the wireless device, the different cell site being associated with another wireless device, wherein the signal strength of the beacon frequency in the different cell site is utilized by the wireless telecommunications system to determine a frequency interference between the cell site and the different cell site.

14. The method of claim 9, wherein reporting the measured signal strength of the beacon frequency to the wireless telecommunications system comprises reporting the measured signal strength of the beacon frequency in response to a trigger frequency received at the wireless device from a phantom trigger site in the wireless telecommunications system.

15. A computer-readable medium having stored thereon instructions which, when executed by a processor, cause the processor to perform a method for recording the signal strength of a downlink frequency utilized for calculating the performance of a wireless telecommunications system on a wireless device, the method comprising:

measuring a signal strength of a beacon frequency comprising a selected frequency in a cell site associated with the wireless device; and

reporting the measured signal strength of the beacon frequency to the wireless telecommunications system, the measured signal strength being utilized by the wireless telecommunications system to determine a frequency interference between cell sites in the wireless telecommunications system.

16. The computer-readable medium of claim 15, wherein measuring a signal strength of a beacon frequency comprising a selected frequency in a cell site associated with the wireless device comprises measuring a selected frequency comprising a phantom channel associated with a phantom cell site.

17. The computer-readable medium of claim 15, wherein reporting the measured signal strength of the beacon frequency comprises reporting signal strength measurements of each of a plurality of cell sites in a mobile assisted handoff list (MAHO) associated with the wireless device.

18. The computer-readable medium of claim 15 further comprising storing the measured signal strength of the beacon frequency on the wireless device.

19. The computer-readable medium of claim 15 further comprising measuring a signal strength of the beacon frequency in a different cell site than the one associated with the wireless device, the different cell site being associated with another wireless device, wherein the signal strength of the beacon frequency in the different cell site is utilized by the wireless telecommunications system to determine a frequency interference between the cell site and the different cell site.

20. The computer-readable medium of claim 15, wherein reporting the measured signal strength of the beacon frequency to the wireless telecommunications system comprises reporting the measured signal strength of the beacon frequency in response to a trigger frequency received at the wireless device from a phantom trigger site in the wireless telecommunications system.