Methods and tools for persistent spectrum analysis of an operating radio frequency band

• US 10,194,328 B2
• Filed: 11/11/2015
• Issued: 01/29/2019
• Est. Priority Date: 06/30/2014
• Status: Active Grant

• Current Assignee: Ubiquiti Inc.
• Original Assignee: Ubiquiti Networks, Inc. (Ubiquiti Inc.)
• Inventors: Dayanandan, Sriram, Ponnampalam, Vish
• Primary Examiner(s): Nguyen, Hanh N
• Assistant Examiner(s): Perez, Jose L
• Application Number:
  US14/938,674
• Publication Number:
  US 20160100320A1
• Time in Patent Office: 1,175 Days
• Field of Search: 370254, 4554561, 4551151
• CPC Class Codes: H04B 17/391 Modelling the propagation channel
• CPC Class Codes: H04K 2203/18 for wireless local area networks or WLAN
• CPC Class Codes: H04K 3/226 Selection of non-jammed channel for communication spectrum sharing arrangements H04W16/14; selection of wireless resources by user or terminal H04W72/02
• CPC Class Codes: H04K 3/822 by detecting the presence of a surveillance, interception or detection
• CPC Class Codes: H04L 41/0823 characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for optimising operational conditions of wireless networks H04W24/02
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 41/145 involving simulating, designing, planning or modelling of a network
• CPC Class Codes: H04L 41/22 comprising specially adapted graphical user interfaces [GUI]
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences

Abstract

Generation and use of geographic databases of frequency spectral information within an operating frequency band. Described herein are methods of making databases of geospectral information and using these databases to optimize performance of wireless networks. For example, a network of wireless radio devices that monitor the frequency spectrum of the operating frequency band may provide this geographically marked information to a central database to create a database of geospectral frequency information. This geospectral frequency information may be used to characterize, optimize or modify a network of wireless radio device, or to modify an individual wireless radio device.

Claims

1. A method of persistent spectrum analysis of an operating frequency band, the method comprising:

transmitting and receiving wireless information within the operating frequency band from each of a plurality of wireless radio devices that are separated geographically from each other and in wireless communication with an access point in a network;

monitoring the frequency spectrum of the operating frequency band over time to detect a set of spectrum information of the operating frequency band from each of the wireless radio devices simultaneously with, and independently of, transmitting and receiving the wireless information;

periodically transmitting to a spectrum analysis engine the sets of spectrum information detected along with information identifying a geographic location of the wireless radio device that detected each set of spectrum information, wherein each set of spectrum information is time stamped;

creating a geographic database of spectrum information over time at the spectrum analysis engine using the sets of spectrum information;

determining a measure of efficiency for each of the plurality of wireless radio devices;

simulating, using the spectrum analysis engine, the addition of a new wireless radio device having predetermined operating characteristics to the network at a plurality of different geographic locations and determining a new measure of efficiency for each of the plurality of wireless radio devices and the new wireless radio device at the different geographic locations;

providing, from the spectrum analysis engine, a link simulation for the new wireless radio device at each of the plurality of different geographic locations including a Fresnel profile; and

configuring the new wireless radio device at the new geographic location having the provided operating characteristics.

2. The method of claim 1, wherein the plurality of wireless radio devices are wireless stations.

3. The method of claim 1, wherein monitoring comprises monitoring the frequency spectrum of the entire operating band.

4. The method of claim 1, wherein transmitting and receiving comprises transmitting and receiving in one or more channels within the operating frequency band.

5. The method of claim 1, wherein transmitting comprises transmitting information identifying at least one of the time or date that the set of spectrum information was detected.

6. The method of claim 1, wherein transmitting comprises transmitting information identifying the wireless radio device that detected the set of spectrum information.

7. The method of claim 1, wherein monitoring the frequency spectrum of the operating frequency band comprises storing one or more sets of spectrum information of the operating frequency band in the wireless radio devices collecting the one or more sets of spectrum information.

8. The method of claim 1, further comprising updating the geographic database of spectrum information with additional sets of spectrum information detected at different times from each of the plurality of wireless radio devices.

9. A method of building a geographic database of spectrum information for an operating frequency band, the method comprising:

monitoring a frequency spectrum of the operating frequency band to detect a set of frequency spectrum information of the operating frequency band from each of a plurality of wireless radio devices in a network, wherein each of the wireless radio devices both monitors the frequency spectrum of the operating frequency band and transmits and receives wireless information;

encoding, in each wireless radio device, an enriched set of frequency spectrum information, wherein the enriched set of frequency spectrum information includes the set of frequency spectrum information and a geographic location of the wireless radio device that detected the set of frequency spectrum information;

transmitting the enriched set of frequency spectrum information from each wireless radio device to a spectrum analysis engine;

aggregating the enriched sets of frequency spectrum information to create a geographic database of spectrum information over time;

determining a measure of efficiency for each of the plurality of wireless radio devices;

simulating, using the spectrum analysis engine, the addition of a new wireless radio device having predetermined operating characteristics to the network at a plurality of different geographic locations and determining new measure of efficiency at the different geographic locations for the new wireless radio device and each of the plurality of wireless radio devices;

providing, from the spectrum analysis engine, a link simulation for the new wireless radio device at each of the different geographic locations including a Fresnel profile display and; and

locations including a Fresnel zone; and

configuring the new wireless radio device at the new geographic location having the provided operating characteristics.

10. The method of claim 9, wherein at least some of the wireless radio devices are access points.

11. The method of claim 9, wherein monitoring comprises monitoring the frequency spectrum of the entire operating band.

12. The method of claim 9, wherein each of the wireless radio devices independently and simultaneously monitors the frequency spectrum of the operating frequency band and to transmit and receive wireless information with other wireless radio devices.

13. The method of claim 9, wherein each of the wireless radio devices transmits and receives wireless information in one or more channels within the operating frequency band.

14. The method of claim 9, wherein encoding comprises including in the enriched set of frequency spectrum information identifying at least one of the time or date that the set of spectrum information was detected.

15. The method of claim 9, wherein encoding comprises including in the enriched set of frequency spectrum information identifying the wireless radio device that detected the set of spectrum information.

16. The method of claim 9, wherein monitoring the frequency spectrum of the operating frequency band comprises storing one or more sets of spectrum information of the operating frequency band in the wireless radio devices collecting the one or more sets of spectrum information.

17. The method of claim 9, further comprising updating the geographic database of spectrum information with additional sets of spectrum information detected at different times from each of the plurality of wireless radio devices.