OPERATING SYSTEM INTERFACES FOR VIRTUAL WIFI AND SOFTAP CAPABLE DRIVERS

• US 20090254924A1
• Filed: 04/04/2008
• Published: 10/08/2009
• Est. Priority Date: 04/04/2008
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Wu, Yan, Bell, Michael, Veluswami, Senthilkumar, Anirudh, Ani, Gual, Christopher D., Wu, Deyun, Kuehnel, Thomas W., Shen, Hui, Lu, Yi, Banerjee, Anirban, Mandhana, Taroon, Roberts, David A., Archer, John W., Mahajan, Saurabh, Jiang, Xiong, Subramani, Sundar P., Desai, Mitesh K.
• Application Number:
  US12/098,161
• Publication Number:
  US 20090254924A1
• Time in Patent Office: Days
• US Class Current: 719/321
• CPC Class Codes: G06F 2009/45579 I/O management, e.g. providing access to device drivers or storage
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects

Abstract

Some embodiments of the invention provide an interface between programmed instructions (e.g., an operating system) and a miniport driver configured to communicate with radio hardware on a computer. The interface may include components operable to invoke various wireless connectivity-related functionality implemented by the radio hardware and/or miniport driver. The functionality may, for example, include a capability whereby the computer may maintain simultaneous connections on a plurality of wireless networks using a single radio, and/or a capability whereby the computer may function as an access point for a wireless network.

Claims

1. A computer comprising:

a processor for executing instructions;

a set of computer executable instructions that, when executed by the processor, form an operating system for the computer, the operating system controlling one or more operations of the computer;

a radio constructed and arranged to send and receive wireless signals for communication with at least one device in a wireless network independent of frequency;

a miniport driver comprising a hardware interface adapted to communicate with the radio, provide control signals to the radio, and receive information regarding wireless signals received by the radio from the at least one device via a wireless network; and

an interface operable to invoke functionality implemented by the miniport driver, in response to a request issued by the operating system, the functionality relating to enabling the computer to maintain simultaneous connections with at least two wireless networks using the radio and/or to enabling the computer to operate as an access point for a wireless network;

wherein the interface invokes the functionality by making a call to the miniport driver using at least one OID.

2. The computer of claim 1, wherein the functionality comprises creating at least one new media access control (MAC) context, establishing a new connection via a wireless network, and defining a preferred MAC context.

3. The computer of claim 2, wherein the functionality associated with creating at least one new MAC context is invoked using at least one OID comprising OID_DOT11_CREATE_MAC, the functionality associated with establishing a new connection via a wireless network is invoked using at least one OID comprising OID_DOT11_CONNECT_REQUEST, and the functionality associated with defining a preferred MAC context is invoked using at least one OID comprising OID_DOT11_PREFERRED_MAC.

4. The computer of claim 1, wherein the functionality comprises instantiating at least one access point profile, defining an authentication algorithm, managing at least one probe request, and/or processing at least one association request.

5. The computer of claim 4, wherein the functionality associated with instantiating at least one access point profile is invoked using at least one OID comprising OID_DOT11_START_AP_REQUEST, the functionality associated with defining an authentication algorithm is invoked using at least one OID comprising OID_DOT11_ENABLED_AUTHENTICATION_ALGORITHM, the functionality associated with managing at least one probe request is invoked using at least one OID comprising OID_DOT11_ADDITIONAL_IE, and the functionality associated with processing at least one association request is invoked using at least one OID comprising OID_DOT11_INCOMING_ASSOCIATION_DECISION.

6. The computer of claim 1, wherein the interface is implemented separately from the operating system.

7. The computer of claim 1, wherein the radio is constructed and arranged to send and receive wireless signals using an IEEE 802.11 standard.

8. A method for use in a computer comprising an operating system, a radio operable to send and receive wireless signals to enable the computer to communicate with at least one device in a wireless network, and a miniport driver comprising a hardware interface adapted to communicate with the radio, provide control signals to the radio, and/or receive information regarding wireless signals received by the radio from at least one device via a wireless network, the method comprising an act of:

(A) providing an interface enabling the operating system to invoke virtualization functionality implemented by the miniport driver and/or the radio, the virtualization functionality relating to enabling the computer to maintain simultaneous connections with at least two wireless networks using the radio.

9. The method of claim 8, wherein the virtualization functionality comprises maintaining a plurality of virtual ports, each of the virtual ports being respectively associated with a corresponding wireless network, each virtual port being operable to handle wireless signals to be sent by the radio to, and wireless signals received from, the wireless network associated with the virtual port.

10. The method of claim 8, wherein the interface is operable to invoke the virtualization functionality by making a call to the miniport driver using at least one OID.

11. The method of claim 8, wherein the virtualization functionality comprises creating a new media access control (MAC) context, establishing a new connection via a wireless network, and defining a preferred MAC context, and wherein the virtualization functionality associated with creating a new MAC context is invoked using at least one OID comprising OID_DOT11_CREATE_MAC, the virtualization functionality associated with establishing a new connection via a wireless network is invoked using at least one OID comprising OID_DOT11_CONNECT_REQUEST, and the virtualization functionality associated with defining a preferred MAC context is invoked using at least one OID comprising OID_DOT11_PREFERRED_MAC.

12. The method of claim 8, wherein the interface comprises at least one filter driver operable to pass information between the operating system and the miniport driver.

13. The method of claim 8, wherein the connections include at least one connection which employs an IEEE 802.11 standard.

14. The method of claim 8, further comprising an act of:

(B) providing an interface enabling the operating system to invoke access point functionality implemented by the miniport driver and/or the radio which comprises enabling the computer to act as a wireless network access point.

15. The method of claim 14, wherein the access point functionality comprises instantiating an access point profile, defining an authentication algorithm, managing at least one probe request, and/or processing at least one association request, and wherein the access point functionality associated with instantiating an access point profile is invoked using at least one OID comprising OID_DOT11_START_AP_REQUEST, the access point functionality associated with defining an authentication algorithm is invoked using at least one OID comprising OID_DOT11_ENABLED_AUTHENTICATION ALGORITHM, the access point functionality associated with managing at least one probe request is invoked using at least one OID comprising OID_DOT11_ADDITIONAL_IE, and the access point functionality associated with processing at least one association request is invoked using at least one OID comprising OID_DOT11_INCOMING_ASSOCIATION_DECISION.

16. At least one computer storage medium encoded with instructions which, when executed, perform a method, the method for use in a computer comprising an operating system, a radio operable to send and receive wireless signals to enable the computer to communicate with at least one device in a wireless network, and a miniport driver comprising a hardware interface adapted to communicate with the radio, provide control signals to the radio, and/or receive information regarding wireless signals received by the radio from at least one device via a wireless network, the method comprising an act of:

(A) providing an interface enabling the operating system to invoke access point functionality implemented by the miniport driver and/or radio, the access point functionality relating to enabling the computer to act as an access point for a wireless network.

17. The at least one computer storage medium of claim 16, wherein the interface is operable to invoke the functionality by making a call to the miniport driver using at least one OID.

18. The at least one computer storage medium of claim 16, wherein the access point functionality comprises instantiating an access point profile, defining an authentication algorithm, managing at least one probe request, and/or processing at least one association request, and wherein the access point functionality associated with instantiating an access point profile is invoked using at least one OID comprising OID_DOT11_START_AP_REQUEST, the access point functionality associated with defining an authentication algorithm is invoked using at least one OID comprising OID_DOT11_ENABLED_AUTHENTICATION_ALGORITHM, the access point functionality associated with managing at least one probe request is invoked using at least one OID comprising OID_DOT11_ADDITIONAL_IE, and the access point functionality associated with processing at least one association request is invoked using at least one OID comprising OID_DOT11_INCOMING_ASSOCIATION_DECISION.

19. The at least one computer storage medium of claim 16, wherein the method further comprises an act of:

(C) providing an interface enabling the operating system to invoke virtualization functionality implemented by the miniport driver and/or the radio, the virtualization functionality relating to enabling the computer to maintain simultaneous connections with at least two wireless networks using the radio.

20. The at least one computer storage medium of claim 19, wherein the virtualization functionality comprises creating a new media access control (MAC) context, establishing a new connection via a wireless network, and defining a preferred MAC context, and wherein the virtualization functionality associated with creating a new MAC context is invoked using at least one OID comprising OID_DOT11_CREATE_MAC, the virtualization functionality associated with establishing a new connection via a wireless network is invoked using at least one OID comprising OID_DOT11_CONNECT_REQUEST, and the virtualization functionality associated with defining a preferred MAC context is invoked using at least one OID comprising OID_DOT11_PREFERRED_MAC.