System and method for achieving zero-configuration wireless and wired computing and computing device incorporating same

• US 7,512,081 B2
• Filed: 09/27/2005
• Issued: 03/31/2009
• Est. Priority Date: 03/13/2001
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Sheth, Sachin C., Peicu, Mihai S., Moore, Timothy M., Ayyagari, Arun, Bahl, Pradeep, Teodorescu, Florin, Ganugapati, Krishna
• Primary Examiner(s): CHO, HONG SOL
• Application Number:
  US11/236,777
• Publication Number:
  US 20060239209A1
• Time in Patent Office: 1,281 Days
• Field of Search: 370/245, 370/252, 370/254, 370/255, 370/310, 370/310.1, 370/310.2, 370/338, 370/349, 455/435.2
• US Class Current: 370/255
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/50 Secure pairing of devices
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A system and method for enabling a zero configuration nomadic wireless and wired computing environment presenting a just works experience is presented. The system examines predefined user preference or profile settings to determine to which of a competing number of wireless networks available it should connect, and what type of authentication should be used for such connection. Nomadic wireless computing between infrastructure wireless networks and ad hoc wireless networks may be accomplished without further user intervention required in an auto mode. Also, both infrastructure only and ad hoc only modes are available through the system of the invention. Further, the user may set a preference for infrastructure or ad hoc modes in the auto mode. With an infrastructure mode preference set, the system will automatically detect and transfer connectivity to a newly available infrastructure wireless network if the user was previously operating off-line or in ad hoc mode.

Claims

1. A method for connecting a computing device of a computer user to at least one network of a type selected from a group comprising a wireless telephone network, a wired infrastructure computer network, a wireless infrastructure computer network, and a wireless ad hoc computer network, the method comprising:

checking user preferences for network connectivity, wherein checking user preferences comprises the step of checking for an authentication mode setting and a default mode setting, the default mode setting including an infrastructure mode allowing connectivity only with wireless infrastructure computer networks, an ad hoc mode allowing connectivity only with wireless ad hoc computer networks, an auto infrastructure preferred mode allowing connectivity with wireless infrastructure computer networks and wireless ad hoc computer networks with a preference for the wireless infrastructure computer networks, and an auto ad hoc preferred mode allowing connectivity with wireless infrastructure computer networks and wireless ad hoc computer networks with a preference for wireless ad hoc computer networks;

scanning for network presence of the at least one network;

connecting the computing device to the at least one network based on the user preferences, wherein connecting to the at least one network comprises the steps of associating with a wireless infrastructure computer network, and connecting as a valid user with credentials;

if connecting the computing device to the at least one network fails, selecting an ad hoc mode of operation when the default mode setting is set to auto mode; and

operating the computing device in an off-line mode when network connectivity is not available.

2. The method of claim 1, wherein the step of checking user preferences further comprises the steps of checking for a default mode setting, and checking for a preferred list of network providers.

3. The method of claim 2, further comprising the steps of constructing a all networks discovered, and deriving preferred and compatible network names from the list, wherein the step of connecting to a network comprises connecting the computing device to the preferred and compatible networks.

4. The method of claim 3, wherein the step of connecting the computing device to the preferred and compatible networks comprises the steps of selecting one of the preferred and compatible networks, attempting to associate with the selected one of the preferred and compatible networks based on the authentication mode setting, and when unable to associate with the selected one of the preferred and compatible networks selecting another of the preferred and compatible networks to which to attempt association until an association is formed.

5. The method of claim 1, wherein the step of connecting to the at least one network comprises the steps of performing IEEE 802.11 association with a wireless infrastructure computer network.

6. The method of claim 1, wherein the step of connecting to the at least one network further comprises the step of connecting as an unauthorized user without credentials when the step of connecting as a valid user with credentials fails.

7. The method of claim 1, wherein the step of connecting to the at least one network comprises the step of performing IEEE 802.11 association with an IEEE 802.1X capable network when the authentication mode setting is not set to IEEE 802.1X authentication.

8. The method of claim 1, wherein the step of checking user preferences for networking connectivity comprises the step of checking a connection policy file.

9. A method for connecting a computing device of a computer user to at least one network of a type selected from a group comprising a wireless telephone network, a wired infrastructure computer network, a wireless infrastructure computer network, and a wireless ad hoc computer network, the method comprising:

checking user preferences for network connectivity, wherein checking user preferences comprises the step of checking for an authentication mode setting and for a default mode setting;

scanning for network presence of the at least one network;

connecting the computing device to the at least one network based on the user preferences, wherein connecting to the at least one network comprises the steps of associating with a wireless infrastructure computer network, and connecting as a valid user with credentials;

if connecting the computing device to the at least one network fails, selecting an ad hoc mode of operation when the default mode setting is set to auto mode; and

operating the computing device in an off-line mode when network connectivity is not available.

10. The method of claim 9, wherein the step of selecting the ad hoc mode of operation comprises the steps of selecting an ad hoc network, and attempting an IEEE 802.11 association with the selected network.

11. The method of claim 10, wherein the step of selecting an ad hoc network comprises the step of selecting a default ad hoc network.

12. The method of claim 10, further comprising the step of monitoring for the appearance of the wireless infrastructure computer network when the default mode setting is set to auto, infrastructure preferred mode, and connecting to the wireless infrastructure computer network upon its appearance.

13. The method of claim 10, further comprising the step of monitoring for the appearance of the wireless ad hoc computer network when the default mode setting is set to auto, ad hoc preferred mode, and connecting to the wireless ad hoc computer network upon its appearance.