Francis Duong

US Patent:

7385960, Jun 10, 2008

Filed:

Feb 28, 2005

Appl. No.:

11/070679

Inventors:

Deepak Bansal - Redmond WA, US
Abhishek Abhishek - Woodinville WA, US
Francis Duong - Bellevue WA, US
Tarek Z. Elabbady - Redmond WA, US
Khawar M. Zuberi - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04Q 7/00
H04Q 7/24

US Classification:

370338, 370331, 370332, 370241, 455 412, 4554521

Abstract:

A wireless device communications mode selector dynamically establishes an optimal communication mode between wireless devices and/or access point, such that stations communicate directly with each other or indirectly through an existing AP depending upon which mode would yield higher throughput under present network conditions and configuration. In an embodiment of the invention, a measurement based mechanism is used to decide which communication mode is more efficient. If it is decided that direct communication is optimal, the two stations can either form an adhoc network or an STA can be dynamically configured to become a wireless repeater access point (soft AP).

US Patent:

7426550, Sep 16, 2008

Filed:

Aug 31, 2004

Appl. No.:

10/930684

Inventors:

Abhishek Abhishek - Woodinville WA, US
Francis Duong - Bellevue WA, US
Shai Guday - Redmond WA, US
Anton Krantz - Kirkland WA, US
Jiandong Ruan - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/177

US Classification:

709220, 709224, 709227, 709230, 455410, 713155

Abstract:

An extensible wireless framework for connecting to a wireless network is provided. The extensible wireless framework includes a network roaming service with a registration component and a network service component. The registration component registers extensible service modules and extensible drivers for providing non-standard (i. e. , extensible) capabilities to the wireless network. The extensible service module provides a service not provided by a native component of the extensible wireless framework, and the extensible driver may implement a media access control sub-layer of a wireless network protocol and provide a media access control interface. The network service component identifies available wireless networks, selects to join the wireless network when available, requests the extensible driver for the wireless network via its media access control interface to connect to the selected network, and notifies the extensible service module to provide services to the extensible driver.

US Patent:

7577125, Aug 18, 2009

Filed:

Jul 8, 2005

Appl. No.:

11/177515

Inventors:

Abhishek Abhishek - Woodinville WA, US
Amer A. Hassan - Kirkland WA, US
Thomas W. Kuehnel - Seattle WA, US
Noel W. Anderson - Bellevue WA, US
Christian Huitema - Clyde Hill WA, US
Jiandong Ruan - Sammamish WA, US
Francis Duong - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04W 4/00

US Classification:

370338, 370328, 370329, 370349

Abstract:

A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.

US Patent:

7613426, Nov 3, 2009

Filed:

Dec 20, 2005

Appl. No.:

11/312040

Inventors:

Thomas W. Kuehnel - Seattle WA, US
Abhishek Abhishek - Woodinville WA, US
Amer A. Hassan - Kirkland WA, US
David Jones - Seattle WA, US
Francis Duong - Bellevue WA, US
Hui Shen - Issaquah WA, US
Jiandong Ruan - Sammamish WA, US
Sean O. Lyndersay - Seattle WA, US
Srinivas R. Gatta - Redmond WA, US
Vishesh M. Parikh - Redmond WA, US
Yi Lu - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04B 7/00
H04L 12/28
G06F 3/00

US Classification:

455 412, 3703951, 710 40

Abstract:

Discovery of services between devices is provided prior to establishing a connection between devices, including wireless-enabled devices or devices that are communicatively coupled to wireless access points. Discovering services prior to establishing a connection may facilitate finding a desired service. The services that may be discovered may be, for example, print services, camera services, PDA services or any other suitable services. Services may be discovered using 802. 11, UWB or any other suitable wireless technology. As one example, particular services may be requested. As another example, services that are provided by a device may be advertised.

US Patent:

7664465, Feb 16, 2010

Filed:

Nov 4, 2005

Appl. No.:

11/267458

Inventors:

Hui Shen - Issaquah WA, US
Jiandong Ruan - Sammamish WA, US
Francis Duong - Bellevue WA, US
Victoria Poncini - Renton WA, US
Abhishek Abhishek - Woodinville WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04B 1/00

US Classification:

455 631, 455 6713, 455 6711, 455434, 4552261, 455296, 455450, 455 412, 370252, 370338, 370346

Abstract:

Described is a determination of whether interference in a wireless network has achieved a threshold level that adversely impacts communication bandwidth. If so, action is taken to mitigate the effects of the interference and thereby improve the bandwidth. The action that is taken may be in the form of at least one mitigation solution, including mitigating by packet fragmentation, mitigating by changing the wireless network's current operating frequency, mitigating by changing a power level, mitigating by transmit dodging, and/or mitigating by pre-selecting at least one transmission criterion based on an observed pattern. A framework is provided to coordinate mitigation of interference-related problems, and includes an interferer decision mechanism that receives RF interference related-data and evaluates the interference data against a threshold. Mitigation is employed when the threshold is achieved on the current operating frequency.

US Patent:

7969954, Jun 28, 2011

Filed:

Aug 17, 2009

Appl. No.:

12/542357

Inventors:

Abhishek Abhishek - Sammamish WA, US
Amer A. Hassan - Kirkland WA, US
Thomas W. Kuehnel - Seattle WA, US
Noel W. Anderson - Bellevue WA, US
Christian Huitema - Clyde Hill WA, US
Jiandong Ruan - Sammamish WA, US
Francis Duong - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04W 4/00

US Classification:

370338, 370328, 370329, 370349

Abstract:

A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.

US Patent:

8265052, Sep 11, 2012

Filed:

May 25, 2011

Appl. No.:

13/115262

Inventors:

Abhishek Abhishek - Sammamish WA, US
Amer A. Hassan - Kirkland WA, US
Thomas W. Kuehnel - Seattle WA, US
Noel W. Anderson - Bellevue WA, US
Christian Huitema - Clyde Hill WA, US
Jiandong Ruan - Sammamish WA, US
Francis Duong - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04W 4/00

US Classification:

370338, 370328, 370329, 370349

Abstract:

A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.

US Patent:

8478300, Jul 2, 2013

Filed:

Dec 20, 2005

Appl. No.:

11/313148

Inventors:

Thomas W. Kuehnel - Seattle WA, US
Abhishek Abhishek - Woodinville WA, US
Amer A. Hassan - Kirkland WA, US
David Jones - Seattle WA, US
Francis Duong - Bellevue WA, US
Hui Shen - Issaquah WA, US
Jiandong Ruan - Sammamish WA, US
Sean O. Lyndersay - Seattle WA, US
Srinivas R. Gatta - Redmond WA, US
Vishesh M. Parikh - Redmond WA, US
Yi Lu - Bellevue WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04W 24/00
H04B 7/00
H04L 12/28

US Classification:

4554563, 455 412, 3703952, 37039532

Abstract:

Discovery of services between devices is provided prior to establishing a connection between devices, including wireless-enabled devices or devices that are communicatively coupled to wireless access points or other wireless communication devices. Discovering services prior to establishing a connection may facilitate finding a desired service. The services that may be discovered may be, for example, print services, camera services, PDA services or any other suitable services. Services may be discovered using 802. 11, UWB or any other suitable wireless technology. As one example, particular services may be requested. As another example, services that are provided by a device may be advertised.