Native Wi-Fi architecture for 802.11 networks

• US 9,265,088 B2
• Filed: 11/28/2012
• Issued: 02/16/2016
• Est. Priority Date: 11/27/2002
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Abhishek, Abhishek, Ayyagari, Arun, Shen, Hui, Ganugapati, Krishna, Ruan, Jiandong
• Primary Examiner(s): Hailu, Kibrom T
• Application Number:
  US13/688,038
• Publication Number:
  US 20130083698A1
• Time in Patent Office: 1,175 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/162 at the data link layer
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A software based wireless infrastructure system is provided. The system has a driver that communicates with the network stack and a network interface card (NIC), a station server in communication with the station driver and an 802.1X supplicant or an 802.1X authenticator. Each NIC provides station and/or access point functionality support. The driver drops packets that have been received if the packet has not been authenticated and associated. Packets that have been fragmented or encrypted are unfragmented and decrypted. An association manager is used in conjunction with a configuration table manager to associate stations and access points via management packets. A manager receives 802.1X data packets from the packet processor and sends them up to a station server that communicates with user mode applications and an 802.1X supplicant or an 802.1X authenticator that are used to authenticate and deauthenticate stations and access points. APIs are provided to enable communication between the components.

Claims

1. A method performed on a computing device that includes at least one processor, memory, and a network interface card (“

NIC”

), the method comprising;

implementing, by the computing device, wireless networking functionality of a station or of an access point that are each configured to interact with the NIC; and

setting, by the computing device, a mode of operation of the NIC that is selected from a group of modes of operation that includes a station only mode, an access point only mode, and a station and access point mode, where the NIC'"'"'s station only mode supports the wireless networking functionality of the station but not the access point, where the NIC'"'"'s access point only mode supports the wireless networking functionality of the access point but not the station, where the NIC'"'"'s station and access point mode supports the wireless networking functionality of the station and the access point, and where the station or the access point, as opposed to the NIC, is configured to provide functionality comprising;

authentication services;

wired equivalent privacy (“

WEP”

) functionality;

packet fragmentation functionality;

packet defragmentation functionality;

or

association and re-association functionality.

2. The method of claim 1 wherein the WEP functionality comprises:

a WEP encryption procedure;

a WEP decryption procedure;

or

security service management functionality.

3. The method of claim 1 wherein the provided functionality further comprises media access control (“

MAC”

) service data unit (“

MSDU”

) support.

4. The method of claim 1 wherein the provided functionality further comprises multiple outstanding MSDU transmission restrictions.

5. The method of claim 1 wherein the association and re-association functionality comprises providing an association state.

6. The method of claim 1 wherein the provided functionality further comprises disassociation functionality or probe functionality.

7. The method of claim 1 wherein the station comprises a station server configured to communicate with a station driver that communicates with the NIC, and where the access point comprises an access point server configured to communicate with an access point driver that communicates with the NIC.

8. At least one computer storage device storing computer-executable instructions that, when executed by a computing device that includes at least one processor, memory, and a network interface card (“

NIC”

), cause the computing device to;

implement wireless networking functionality of a station or of an access point that are each configured to interact with the NIC; and

set a mode of operation of the NIC that is selected from a group of modes of operation that includes a station only mode, an access point only mode, and a station and access point mode, where the NIC'"'"'s station only mode supports the wireless networking functionality of the station but not the access point, where the NIC'"'"'s access point only mode supports the wireless networking functionality of the access point but not the station, where the NIC'"'"'s station and access point mode supports the wireless networking functionality of the station and the access point, and where the station or the access point, as opposed to the NIC, is configured to provide functionality comprising;

authentication services;

wired equivalent privacy (“

WEP”

) functionality;

packet fragmentation functionality;

packet defragmentation functionality;

or

association and re-association functionality.

9. The at least one computer storage device of claim 8 wherein the WEP functionality comprises:

a WEP encryption procedure;

a WEP decryption procedure;

or

security service management functionality.

10. The at least one computer storage device of claim 8 wherein the provided functionality further comprises media access control (“

MAC”

) service data unit (“

MSDU”

) support.

11. The at least one computer storage device of claim 8 wherein the provided functionality further comprises multiple outstanding MSDU transmission restrictions.

12. The at least one computer storage device of claim 8 wherein the association and re-association functionality comprises providing an association state.

13. The at least one computer storage device of claim 8 wherein the provided functionality further comprises disassociation functionality.

14. The at least one computer storage device of claim 8 wherein the provided functionality further comprises probe functionality that comprises probe response or beacon functionality.

15. A computing device comprising:

at least one processor;

memory;

a network interface card (“

NIC”

); and

at least one program module, where the computing device is configured, according to the at least one program module, to;

implement wireless networking functionality of a station or of an access point that are each configured to interact with the NIC; and

set a mode of operation of the NIC that is selected from a group of modes of operation that includes a station only mode, an access point only mode, and a station and access point mode, where the NIC'"'"'s station only mode supports the wireless networking functionality of the station but not the access point, where the NIC'"'"'s access point only mode supports the wireless networking functionality of the access point but not the station, where the NIC'"'"'s station and access point mode supports the wireless networking functionality of the station and the access point, and where the station or the access point, as opposed to the NIC, is configured to provide functionality comprising;

authentication services;

wired equivalent privacy (“

WEP”

) functionality;

packet fragmentation functionality;

packet defragmentation functionality;

or

association and re-association functionality.

16. The computing device of claim 15 wherein the WEP functionality comprises:

a WEP encryption procedure;

a WEP decryption procedure;

or

security service management functionality.

17. The computing device of claim 15 wherein the station or the access point, as opposed to the NIC, is further configured to provide media access control (“

MAC”

) service data unit (“

MSDU”

) support.

18. The computing device of claim 15 wherein the station or the access point, as opposed to the NIC, is further configured to provide multiple outstanding MSDU transmission restrictions.

19. The computing device of claim 15 wherein the association and re-association functionality comprises providing an association state, or where the providing further comprising disassociation functionality.

20. The computing device of claim 15 wherein the station or the access point, as opposed to the NIC, is further configured to provide probe functionality that comprises probe response or beacon functionality.