SYSTEM AND METHOD FOR CONDUCTING WIRELESS SITE SURVEYS USING WIRELESS NETWORK DESIGN CRITERIA

• US 20140044005A1
• Filed: 01/19/2012
• Published: 02/13/2014
• Est. Priority Date: 01/19/2012
• Status: Abandoned Application

• Current Assignee: Riverbed Technology Incorporated
• Original Assignee: Xirrus Incorporated
• Inventors: Chernyakhovsky, Alexander, Keys, Samuel Joseph, Brown, Ernest William, Warren, Adrian Harris
• Application Number:
  US13/353,880
• Publication Number:
  US 20140044005A1
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 16/225 for indoor or short range network
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

A system for conducting wireless site surveys of a wireless environment is provided. A wireless interface controller controls a wireless interface during a scan of a wireless frequency band. A user interface module receives a set of wireless network design criteria, and a measurement module obtains a set of wireless signal information based on a set of wireless signals received during the scan of the wireless frequency band. An analysis module compares the set of wireless signal information to the set of wireless network design criteria and automatically determines whether the set of wireless network design criteria is, at least in part, satisfied. The user interface module provides an indicator that indicates whether the set of wireless network design criteria is, at least in part, satisfied.

Claims

1. A system for conducting wireless site surveys of a wireless environment comprising:

a wireless interface controller that controls a wireless interface during a scan of a wireless frequency band;

a user interface module that receives a set of wireless network design criteria;

a measurement module that obtains a set of wireless signal information based on a set of wireless signals received during the scan of the wireless frequency band;

an analysis module that compares the set of wireless signal information to the set of wireless network design criteria and automatically determines whether the set of wireless network design criteria is, at least in part, satisfied; and

wherein the user interface module provides an indicator that indicates whether the set of wireless network design criteria is, at least in part, satisfied.

2. The system of claim 1 wherein:

the analysis module determines that the set of wireless network design criteria is satisfied when each wireless network design criterion in the set of wireless network design criteria is satisfied; and

the analysis module determines that the set of wireless network design criteria is not satisfied when at least one wireless network design criterion in the set of wireless network design criteria is not satisfied.

3. The system of claim 2 wherein the analysis module determines that a wireless network design criterion in the set of wireless network design criteria is satisfied when a predetermined amount of wireless signals in the set of wireless signals satisfy the wireless network design criterion.

4. The system of claim 3 wherein the predetermined amount of wireless signals that satisfy the network design criterion is a predetermined percentage of wireless signals in the set of wireless signals that satisfy the wireless network design criterion.

5. The system of claim 2 wherein the analysis module determines that a wireless network design criterion in the set of wireless network design criteria is not satisfied when a predetermined amount of wireless signals in the set of wireless signals do not satisfy the wireless network design criterion.

6. The system of claim 2 wherein the indicator that indicates whether the set of wireless network design criteria is satisfied includes a global indicator that indicates whether each wireless network design criterion in the set of wireless network design criteria is satisfied.

7. The system of claim 6 wherein:

the global indicator includes a visual indicator;

the user interface module selects a first color for the global indicator when the set of wireless network criteria is satisfied; and

the user interface module selects a second color for the global indicator different from the first color when the set of wireless network design criteria is not satisfied.

8. The system of claim 6 wherein the global indicator includes an audible indicator and playback of the audible indicator is initiated in response to a determination that the set of wireless network design criteria is satisfied.

9. The system of claim 1 wherein:

individual wireless signals in the set of wireless signals are respectively associated with a channel of the wireless frequency band; and

the user interface module provides a display that includes a table of channels observed during the scan of the wireless frequency band, the channels observed during the scan of the wireless frequency band are respectively associated with line items of the table.

10. The system of claim 9 wherein individual line items in the table are respectively displayed with a line item background color that indicates whether wireless signals broadcast on the channel associated with the line item satisfy the set of wireless network design criteria.

11. The system of claim 10 wherein:

the user interface module sets the line item background color to a first color when a first predetermined amount of wireless signals broadcast on the channel associated with the line item satisfy the set of wireless network design criteria; and

the user interface module sets the line item background color to a second color different from the first color when a second predetermined amount of wireless signals broadcast on the channel associated with the line item do not satisfy at least one wireless network design criterion in the set of wireless network design criteria.

12. The system of claim 1 wherein:

the set of wireless network design criteria includes at least one of;

(1) a minimum number of wireless access devices observed in the wireless environment during the scan of the wireless frequency band, (2) a minimum number of wireless access points observed in the wireless environment during the scan of the wireless frequency band, (3) a minimum signal strength value, and (4) a maximum signal-to-noise ratio observed in the wireless environment during the scan of the wireless frequency band; and

the set of wireless signal information includes at least one of;

(a) an observed number of wireless access devices, (b) an observed number of wireless access points, (c) a set of observed signal strength values respectively corresponding to individual wireless signals in the set of wireless signals, and (d) an observed signal-to-noise ratio in the wireless environment.

13. The system of claim 12 wherein the analysis module determines that the set of wireless network design criteria is satisfied when:

(i) the observed number of wireless access devices or the observed number of wireless access points at least equals the minimum number of wireless access devices or the minimum number of wireless access points respectively;

(ii) individual observed signal strength values in the set of observed signal strength values at least equal the minimum signal strength value; and

(iii) the observed signal-to-noise ratio is below the maximum signal-to-noise ratio.

14. The system of claim 1 further comprising a channel filter that instructs the wireless interface controller to selectively monitor a set of selected channels in the wireless frequency band during the scan of the wireless frequency band such that the wireless interface controller does not monitor unselected channels during the scan of the wireless frequency band.

15. The system of claim 1 wherein:

the wireless interface controller controls the wireless interface during a plurality of scans of the wireless frequency band;

individual scans in the plurality of scans are respectively performed at a set of locations within the wireless environment;

the measurement module obtains a plurality of sets of wireless signal information respectively based on a plurality of sets of wireless signals received during the plurality of scans of the wireless frequency band;

individual sets of wireless signals in the plurality of sets of wireless signals are respectively associated with individual locations in the set of locations within the wireless environment; and

the analysis module determines whether the set of wireless network design criteria is, at least in part, satisfied based on the plurality of sets of wireless signal information.

16. The system of claim 1 wherein the wireless frequency band includes the 2.4 GHz frequency band and the 5 GHz wireless frequency band.

17. A computer-implemented method of conducting a wireless site survey for a wireless environment comprising:

receiving a set of wireless network design criteria;

scanning a wireless frequency band to receive a set of wireless signals;

measuring individual wireless signals in the set of wireless signals to obtain a set of wireless signal information associated with the set of wireless signals;

comparing the set of wireless signal information to the set of wireless network design criteria;

determining whether the set of wireless network design criteria is, at least in part, satisfied; and

providing an indicator that indicates whether the set of wireless network design criteria is, at least in part, satisfied.

18. The computer-implemented method of claim 17 further comprising:

determining that the set of wireless network design criteria is satisfied when each wireless network design criterion in the set of wireless network design criteria is satisfied; and

determining that the set of wireless network design criteria is not satisfied when at least one wireless network design criterion in the set of wireless network design criteria is not satisfied.

19. The computer-implemented method of claim 18 further comprising determining that a wireless network design criterion in the set of wireless network design criteria is satisfied when a predetermined amount of wireless signals in the set of wireless signals satisfy the wireless network design criterion.

20. The computer-implemented method of claim 19 wherein the predetermined amount of wireless signals that satisfy the wireless network design criterion is a predetermined percentage of wireless signals in the set of wireless signals that satisfy the wireless network design criterion.

21. The computer-implemented method of claim 18 further comprising determining that a wireless network design criterion in the set of wireless network design criteria is not satisfied when a predetermined amount of wireless signals in the set of wireless signals do not satisfy the wireless network design criterion.

22. The computer-implemented method of claim 18 wherein the indicator that indicates whether the set of wireless network design criteria is satisfied includes a global indicator that indicates whether each wireless network design criterion in the set of wireless network design criteria is satisfied.

23. The computer-implemented method of claim 22 wherein the global indicator includes a visual indicator and further comprising:

selecting a first color for the global indicator when the set of wireless network design criteria is satisfied; and

selecting a second color for the global indicator different from the first color when the set of wireless network design criteria is not satisfied.

24. The computer-implemented method of claim 22 wherein the global indicator includes an audible indicator and further comprising initiating playback of the audible indicator in response to a determination that the set of wireless network design criteria is satisfied.

25. The computer-implemented method of claim 17 wherein individual wireless signals in the set of wireless signals are respectively associated with a channel of the wireless frequency band and further comprising providing a display that includes a table of channels observed while scanning the wireless frequency band wherein the channels observed while scanning the wireless frequency band are respectively associated with line items of the table.

26. The computer-implemented method of claim 25 further comprising respectively configuring individual line items in the table with a line item background color that indicates whether wireless signals broadcast on the channel associated with the line item satisfy the set of wireless-network design criteria.

27. The computer-implemented method of claim 26 further comprising:

setting the line item background color to a first color when a first predetermined amount of wireless signals broadcast on the channel associated with the line item satisfy the set of wireless network design criteria; and

setting the line item background color to a second color different from the first color when a second predetermined amount of wireless signals broadcast on the channel associated with the line item do not satisfy at least one wireless network design criterion in the set of wireless network design criteria.

28. The computer-implemented method of claim 17 wherein:

the set of wireless network design criteria includes at least one of;

(1) a minimum number of wireless access devices observed in the wireless environment during the scan of the wireless frequency band, (2) a minimum number of wireless access points observed in the wireless environment during the scan of the wireless frequency band, (3) a minimum signal strength value, and (4) a maximum signal-to-noise ratio observed in the wireless environment during the scan of the wireless frequency band; and

the set of wireless signal information includes at least one of;

(a) an observed number of wireless access devices, (b) an observed number of wireless access points, (c) a set of observed signal strength values respectively corresponding to individual wireless signals in the set of wireless signals, and (d) an observed signal-to-noise ratio in the wireless environment.

29. The computer-implemented method of claim 28 further comprising determining that the set of wireless network design criteria is satisfied in response to:

(i) determining that the observed number of wireless access devices or the observed number of wireless access points at least equals the minimum number of wireless access devices or the minimum number of wireless access points respectively;

(ii) determining that individual observed signal strength values in the set of observed signal strength values at least equal the minimum signal strength value; and

(iii) determining that the observed signal-to-noise ratio is below the maximum signal-to-noise ratio.

30. The computer-implemented method of claim 17 further comprising selectively monitoring a set of selected channels in the wireless frequency band while scanning the wireless frequency band such that unselected channels are not monitored while scanning the wireless frequency band.

31. The computer-implemented method of claim 17 further comprising:

scanning the wireless frequency band at a plurality of locations within the wireless environment to receive a plurality of sets of wireless signals wherein individual sets of wireless signals of the plurality of sets of wireless signals are respectively associated with individual locations of the plurality of locations;

obtaining a plurality of sets of wireless signal information respectively based on the plurality of sets of wireless signals; and

determining whether the set of wireless network design criteria is, at least in part, satisfied based on the plurality of sets of wireless signal information.

32. The computer-implemented method of claim 17 wherein the wireless frequency band include the IEEE 802.11 2.4 GHz frequency band and the IEEE 802.11 5 GHz frequency band.

33. A method of conducting a wireless site survey for a wireless environment comprising:

providing a set of wireless network design criteria to a wireless network design system;

positioning the wireless network design system at a location within the wireless environment;

scanning a wireless frequency band using the wireless network design system;

determining whether the set of wireless network design criteria is, at least in part, satisfied based on an indicator automatically provided by the wireless network design system; and

reconfiguring the wireless environment when the indicator provided by the wireless network design system indicates that at least one wireless network design criterion in the set of wireless network design criteria is not satisfied.

34. The method of claim 33 wherein the wireless network design system measures wireless signals broadcast by one or more wireless access points deployed in the wireless environment and determines whether the set of wireless network design criteria is, at least in part, satisfied based on a set of wireless signal information associated with a set of wireless signals received at the wireless network design system while scanning the wireless frequency band.

35. The method of claim 34 wherein reconfiguring the wireless environment includes at least one of:

adjusting a number of wireless access devices deployed in the wireless environment;

adjusting a number of wireless access points deployed in the wireless environment;

adjusting respective locations of wireless access devices within the wireless environment;

adjusting respective orientations of wireless access devices or wireless access points within the wireless environment;

replacing one or more wireless access devices of a first wireless access device type with one or more wireless access devices of a second wireless access device type different from the first wireless access device type;

adjusting respective channel assignments among one or more wireless access devices or wireless access points; and

adjusting the transmitting power of one or more wireless access devices or wireless access points.

36. The method of claim 33 further comprising:

positioning the wireless network design system at a plurality of locations within the wireless environment;

scanning the wireless frequency band at individual locations of the plurality of locations using the wireless network design system such that the wireless network design system receives a plurality of sets of wireless signals wherein individual sets of wireless signals of the plurality of sets of wireless signals are respectively associated with the individual locations within the wireless environment; and

wherein the indicator automatically provided by the wireless network design system indicates whether the set of wireless network design criteria is, at least in part, satisfied based on a plurality of sets of wireless signal information respectively associated with the plurality of sets of wireless signals.