Service quality monitoring in a WiFi network

• US 9,094,869 B2
• Filed: 02/14/2014
• Issued: 07/28/2015
• Est. Priority Date: 08/10/2007
• Status: Active Grant

• Current Assignee: 7signal Oy (7Signal Solutions, Inc.)
• Original Assignee: 7signal Oy (7Signal Solutions, Inc.)
• Inventors: Ketonen, Veli-Pekka
• Primary Examiner(s): LOUIS, VINNCELAS
• Application Number:
  US14/180,996
• Publication Number:
  US 20140160971A1
• Time in Patent Office: 529 Days
• Field of Search: 370241-253, 370/260, 370/338, 455/67.13, 455/161.1, 455/423, 455/9, 702/186, 379/21
• US Class Current: 1/1
• CPC Class Codes: H04L 41/147 for predicting network behaviour
• CPC Class Codes: H04L 41/149 for prediction of maintenance
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04L 43/0852 Delays
• CPC Class Codes: H04L 43/0864 Round trip delays
• CPC Class Codes: H04L 43/10 Active monitoring, e.g. heartbeat, ping or trace-route
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method and a system for service quality monitoring in a network includes radio interfaces. The measurements are end-to-end measurements between the end user and chosen network element. The measurements are implemented using monitoring stations which can monitor the traffic passively or actively by transmitting test signals. The antenna beam directions of the monitoring stations can be controlled. The performance server works as a counterpart of the active tests. A reporting suite may define the performed measurements and it also collects the measurement data from different monitoring stations. Monitoring data from several corporate intranets can also be collected to an external server through internet connection.

Claims

1. A method for monitoring service quality in a wireless network, the wireless network having at least one base station providing wireless connectivity to end user devices, the method comprising the steps of:

positioning at least one monitoring device in the wireless network, the monitoring device having one or more antennas for receiving signals from the at least one base station within the wireless network, wherein said at least one monitoring device is capable of initiating test signals and responding to test signals and wherein said at least one monitoring device is also a base station in the wireless network;

dynamically switching said at least one monitoring device between a monitoring mode and a base station mode;

actively testing service quality within the wireless network by selecting various test routes including both wireless and hardwired elements, and transmitting end-to-end test signals over said test routes, said test routes being between said at least one monitoring device and either a test server or a test end point, with said end-to-end test signals being routed through said at least one base station and the wireless network;

receiving said end-to-end test signals; and

determining the service quality using a) packet throughput and b) packet delay, using said end-to-end test signals.

2. The method of claim 1, where said end-to-end test signals are transmitted from said at least one monitoring device to said test server or said test end point.

3. The method of claim 2 where said end-to-end test signals are returned from said test server or test end point to said at least one monitoring device.

4. The method of claim 1 where said end-to-end test signals are transmitted from said test server or said test end point to said at least one monitoring device.

5. The method of claim 4 where said end-to-end test signals are returned from said at least one monitoring device to said test server or said test end point.

6. The method of claim 1 including sensing traffic in the wireless network, and switching between the monitoring mode and the base station mode in response to the sensed traffic in the wireless network.

7. The method of claim 6 including increasing the amount of time for the monitoring mode in response to sensing increased traffic in the wireless network.

8. The method of claim 1 where said at least one monitoring device also serves as a traffic gateway or a repeater station for the wireless network.

9. The method of claim 1 where said at least one monitoring device can also function as a repeater in the wireless network, and further including switching among said monitoring mode, said base station mode and a repeater mode.

10. The method of claim 1 where said at least one monitoring device is configured to:

a, generate test traffic;

b. respond to test traffic; and

c. passively receive signals and determine at least one quality parameter from the received signals.

11. The method of claim 1 where the step of transmitting end-to-end test signals from said at least one monitoring device through the wireless network to said test server or to said test end point is followed by transmitting return end-to-end test signals from said test server or said test end point back to said at least one monitoring device.

12. The method of claim 1 where the method further comprises selecting one or more of the following routes for the end-to-end test signals:

a. the monitoring device as a starting point of a route and the same monitoring device as an ending point of the route;

b. the monitoring device as a starting point of a route and another monitoring device as an ending point of the route;

c. the monitoring device as a starting point of a route and a test server as an ending point of the route;

d. a test server as a starting point of a route and a monitoring device as an ending point of the route;

e. the monitoring device as a starting point of a route and a reporting server as an ending point of the route; and

f. a reporting server as a starting point of a route and a monitoring device as an ending point of the route.

13. The method of claim 1 including the steps of:

a. identifying a desired user device in the wireless network for monitoring;

b. monitoring the signals from the identified user device; and

c. measuring at least one of user service quality, data security or security threat level from the wireless network.

14. The method of claim 1 where when said one or more antennas of said at least one monitoring device receives an end-to-end test signal, the amplification of the incoming end-to-end test signal by said one or more antennas varies depending on the direction of the incoming test signal relative to said one or more antennas.

15. The method of claim 1 where the monitoring device captures packet information associated with a base station in the wireless network, and processes the packet information by doing one or more of the following steps:

a. saving the packet information;

b. transferring the packet information; and

c. analyzing the packet information.

16. The method of claim 1 including using the monitoring device to monitor radio channel usage within the wireless network, and sending a signal to report the status of the radio channel usage.

17. The method of claim 1 where the monitoring device is a mobile monitoring device, and further including the step of moving the monitoring device within the wireless network and transmitting the end-to-end test signals from multiple locations.

18. The method of claim 1 where the wireless network is connected to two switches, and the monitoring device is connected to the two switches, and where the transmission of said end-to-end test signals from the monitoring device includes sending a signal through the wireless network via one of the switches, and further transmitting said test signal back to the monitoring device through the other of the switches.

19. The method of claim 1 where the at least one base station of the wireless network has two base stations, and the monitoring device transmits said end-to-end test signals through different paths, some through one of the base stations and some through the other of the base stations, for a comparison of the service quality of the base stations.

20. The method of claim 1 including a second monitoring device positioned in the wireless network, where one of the monitoring devices sends said end-to-end test signals to the other of the monitoring devices.

21. The method of claim 1 where the monitoring device is positioned within multiple (at least two) wireless networks, and where the monitoring device transmits said end-to-end test signals through the multiple wireless networks to determine service quality in the multiple wireless networks.

22. The method of claim 1 where the wireless network is connected to a local area network, and said end-to-end test signal is transmitted along one or more of the following paths:

a. MD-LAN/WAN-TEST END POINT;

b. TEST END POINT-LAN/WAN-MD;

c. MD-LAN/WAN-PERFORMANCE SERVER;

d. MD-LAN/WAN-CORPORATE SERVER;

e. MD-WIRELESS CONNECTION-WLAN BASE STATION-LAW/WAN-TEST END POINT;

f. MD-WIRELESS CONNECTION-WLAN BASE STATION-WAN/WAN-PERFORMANCE SERVER;

g. MD-WIRELESS CONNECTION-WLAN BASE STATION-LAN/WAN CORPORATE SERVER;

h. REPORTING SUITE-LAN/WAN-WLAN BASE STATION-END USER; and

i. TEST END POINT-LAN/WAN-MD-WIRELESS CONNECTION-MD-LAN/WAN-TEST END POINT;

where MD is the monitoring device, LAN is the local area network, and WAN is the wireless area network.

23. The method of claim 1 where either the monitoring device or the test end point transmits an end-to-end test signal to an end user device.

24. The method of claim 1 including a second monitoring device, and where the test end point transmits an end-to-end test signal through a LAN/WAN connection to one of the monitoring devices, then through a wireless connection to the other monitoring device, then through the LAN/WAN and then to the test server.

25. The method of claim 1 where the monitoring device has multiple antennas, and where the monitoring device receives signals from selected ones of the multiple antennas during reception of signals from the wireless network.

26. A method for monitoring service quality in a wireless network, the wireless network having at least one base station providing wireless connectivity to end user applications, and the wireless network having at least two switches, the method comprising the steps of:

positioning at least one monitoring device in the wireless network, the monitoring device having one or more antennas, the monitoring device being connected to the two switches, wherein the monitoring device is capable of initiating test signals, and where the monitoring device is also a base station in the wireless network;

dynamically switching the monitoring device between a monitoring mode and a base station mode;

actively testing service quality within the wireless network by selecting various test routes including both wireless and hardwired elements, and transmitting end-to-end test signals over said tests routes from said at least one monitoring device through the at least one base station of the wireless network and through one of the switches to a test server or to a test end point;

transmitting end-to-end test signals back from the test server or test end point through the other switch to the monitoring device;

receiving said end-to-end test signals at the monitoring device; and

determining at least one service quality parameter using said end-to-end test signals.

27. A method for monitoring service quality in a wireless network, the wireless network having at least one base station providing wireless connectivity to end user applications, the method comprising the steps of:

positioning at least two monitoring devices in the wireless network, the monitoring devices having one or more antennas with a non-uniform gain pattern, wherein the monitoring devices are capable of initiating test signals and wherein one of the at least two monitoring device is also a base station in the wireless network;

dynamically switching the one of said at least two monitoring devices between a monitoring mode and a base station mode;

actively testing service quality within the wireless network by selecting various test routes including both wireless and hardwired elements, and transmitting end-to-end test signals over said test routes from said one of at least two the monitoring devices through the at least one base station of the wireless network to another of said at least two monitoring devices;

receiving said end-to-end test signals at said another of said at least two monitoring devices; and

determining the service quality using a) packet throughput and b) packet delay, using said end-to-end test signals.