PRE-EVALUATION OF MULTIPLE NETWORK ACCESS POINTS

• US 20100110921A1
• Filed: 09/29/2009
• Published: 05/06/2010
• Est. Priority Date: 09/29/2008
• Status: Active Grant

• Current Assignee: Telcordia Technologies Incorporated (Telefonaktiebolaget LM Ericsson), Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Telcordia Technologies Incorporated (Telefonaktiebolaget LM Ericsson), Toshiba America Research Inc (Toshiba Corporation)
• Inventors: Famolari, David, Sinkar, Kaustubh, Manousakis, Kyriakos
• Granted Patent: US 8,345,599 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic
• CPC Class Codes: H04W 48/17 Selecting a data network PoA [Point of Attachment]
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

The present application describes, inter alia, novel techniques to perform pre-evaluations of multiple Wi-Fi Access Points (AP) and Access Networks (AN). A pre-evaluation determines whether or not an AP is connected to the Internet and measures the path performance that the AN, via that particular AP, can offer between the mobile device and a pre-specified Internet host. In addition, the invention also discloses methods to determine whether the AN requires a user to actively authenticate themselves through a redirect log-on page.

Claims

1. A system for evaluation of one or more access points to an access network prior to a wireless mobile device establishing a data communication session via one of the access point(s) to said access network, comprising:

a mobile device having at least one radio interface for communication with one or more access point(s) to an access network;

said mobile device being configured to collect information broadcasted by the access point(s) and to detect link layer characteristics between the access point(s) and the mobile device;

said mobile device being configured to automatically select or enable user-driven selection of at least one test correspondent for evaluation of network level attributes of the access point(s);

said mobile device having a connection manager that performs an evaluation of the access point(s) based on both a) said broadcasted information and said link layer characteristics between the access points and the mobile devices and b) said network level attributes of said access point(s).

2. A system for evaluation of access points to an access network prior to a wireless mobile device establishing a data communication session via one of the access points to said access network, comprising:

a mobile device configured to receive information wirelessly transmitted from multiple access points;

said mobile device being configured to perform an evaluation of a plurality of access points via which said mobile device does not have an on-going data session based on both physical layer attributes of said access points and network level attributes of said access points such as to evaluate not only physical layer attributes but also networking status of said access points.

3. The system of claim 2, further said mobile device being configured to perform said evaluation based on communications with at least one test correspondent that exchanges IP-level or above packets with the mobile device.

4. The system of claim 2, wherein said physical layer attributes include one or more of signal strength, MAC addresses, nominal bit rates, and transmission technologies.

5. The system of claim 2, wherein said network level attributes include one or more of Internet connectivity, redirect-policies, and path performance.

6. The system of claim 2, wherein said mobile device is configured to present evaluation results via a display to a user of the mobile device.

7. The system of claim 2, wherein said mobile device is configured to prioritize the evaluations of said access points.

8. The system of claim 7, wherein said mobile device is configure to prioritize the evaluations based on one or more of the mobile user'"'"'s past history with an access point, whether or not the access point'"'"'s information is already stored in the user'"'"'s profile, and the access point'"'"'s operational status.

9. The system of claim 2, wherein said mobile device is configured to perform multiple evaluations of access points concurrently in parallel.

10. The system of claim 2, wherein said mobile device is configured with a user-driven mode in which a user physically initiates performance of said evaluation and/or physically selects access points based on said evaluation via a user interface.

11. The system of claim 2, wherein said mobile device is configured with an automatic mode in which the device automatically performs said evaluation and/or automatically selects access points based on said evaluation.

12. The system of claim 11, wherein said automatic mode includes said mobile device being configured to actively perform connectivity and performance scans.

13. The system of claim 2, wherein said evaluation includes grouping of access points.

14. The system of claim 13, wherein said evaluation includes ranking of access points.

15. The system of claim 14, wherein said evaluation includes determining an order of evaluation execution across groups.

16. The system of claim 13, wherein said groups include a group of entries associated with a detected connection that are ad-hoc or peer to peer, a group of access points that are already within a user'"'"'s profile, and a group of access points that are security enabled but not part of the user'"'"'s profile.

17. The system of claim 14, wherein said ranking is presented on a display for the user of the mobile device.

18. The system of claim 2, wherein said mobile device is configured to perform a connectivity evaluation with at least one test correspondent.

19. The system of claim 18, wherein said connectivity evaluation includes obtaining of an IP address and initiating data transfer with said at least one test correspondent.

20. The system of claim 19, wherein said mobile device is configured to present a list of test correspondents for user selection.

21. The system of claim 19, wherein said mobile device is configured to automatically select said test correspondents.

22. The system of claim 21, wherein said data transfer includes said mobile device being configured to transmit a ping message or an HTTP Request to said at least one test correspondent, and said mobile device being configured to store ping results or HTTP Responses.

23. The system of claim 2, wherein said mobile device is configured to perform a performance evaluation with at least one test correspondent.

24. The system of claim 23, wherein said performance evaluation includes end-to-end performance of an access point.

25. The system of claim 24, wherein said mobile device is configured to perform said end-to-end performance using evaluations of ping messages to record throughput and/or delay between the mobile device, the access point being evaluated and the test correspondent.

26. The system of claim 24, wherein said mobile device is configured to perform said end-to-end performance using evaluations of HTTP Request and Response messages based on evaluation of time elapse based on time-stamps of said messages, wherein said mobile device is configured to record, store and analyze times related to said messages.

27. The system of claim 2, wherein said mobile device is configured to operate in a single radio mode and to perform said evaluation while said radio is engaged in an on-going session over an existing connection by disassociating from a currently serving access point to evaluate another access point.

28. The system of claim 2, wherein said mobile device has multiple radio interfaces that can be operated independently and simultaneously to perform said evaluation by having certain radio interfaces operate as serving interfaces and other radio interfaces as scanning or evaluating interfaces.

29. The system of claim 2, wherein said mobile device is configured to display evaluation results and an aggregation of multiple result instances for each access point under evaluation.

30. The system of claim 29, wherein the mobile device is configured to present average, median, extreme or intervals of test results across testing correspondents for each access point under evaluation.

31. The system of claim 2, wherein said mobile device is configured to store results of said evaluation in a database.

32. The system of claim 31, wherein said mobile device is configured to analyze said results of said evaluation.

33. The system of claim 31, wherein said mobile device is configured to index said results of said evaluation based on parameters.

34. The system of claim 33, wherein said mobile device is configured to index said results of said evaluation based on at least one parameter from the group consisting of access point name (SSID), access point MAC address, time of day, day of week and location of the mobile device.

35. The system of claim 34, wherein said mobile device is configured to present results of said evaluation on a geographic map to enable visualization of access point locations and evaluation results in relation to the mobile device.

36. The system of claim 2, wherein said mobile device is configured to prioritize said evaluation results according to at least one variable from the group consisting of throughput performance, delay performance, service provider, and security attributes.

37. The system of claim 2, wherein said mobile device is configured to initiate said evaluation upon detection of a poor application-layer performance of an on-going application running on said mobile device.

38. The system of claim 2, wherein said mobile device is configured to vary said evaluations based on a detected battery power level of said mobile device.

39. The system of claim 38, wherein said mobile device is configured to limit said evaluations based on the mobile devices remaining battery power.

40. The system of claim 38, wherein said mobile device is configured to limit the number of evaluations based on the mobile devices remaining battery power.

41-68. -68. (canceled)