Ming Zhang Zhang

US Patent:

7010304, Mar 7, 2006

Filed:

Sep 23, 2002

Appl. No.:

10/253403

Inventors:

Ming Zhang - Redmond WA, US
Alan Denis MacDonald - Bellevue WA, US

Assignee:

Cingular Wireless II, LLC - Atlanta GA

International Classification:

H04Q 7/20

US Classification:

455446, 455447, 455448, 455449, 455450, 4555621, 343875, 342367, 342423, 342445

Abstract:

Coverage areas for wireless networks are divided into a plurality of cells that are arranged in rows. Channel frequencies are assigned to cell sectors and associated with respective antenna axes. The antenna axes of adjacent rows are alternatingly rotated, thereby reducing co-channel interference. In an example, an available bandwidth is divided into twelve channel frequencies, so that a cell cluster includes four cells. Co-channel cells associated with half the channel frequencies are assigned to cells in the first row of cells, and the remainder are assigned to cells in the second row.

US Patent:

7440758, Oct 21, 2008

Filed:

Mar 6, 2006

Appl. No.:

11/369927

Inventors:

Ming Zhang - Redmond WA, US
Alan Denis MacDonald - Bellevue WA, US

Assignee:

AT&T Mobility II LLC - Atlanta GA

International Classification:

H04Q 7/20

US Classification:

455446, 455447, 455448, 455449, 455451, 4555621, 343875, 342367, 342379, 342423, 342445

Abstract:

Coverage areas for wireless networks are divided into a plurality of cells that are arranged in rows. Channel frequencies are assigned to cell sectors and associated with respective antenna axes. The antenna axes of adjacent rows are alternatingly rotated, thereby reducing co-channel interference. In an example, an available bandwidth is divided into twelve channel frequencies, so that a cell cluster includes four cells. Co-channel cells associated with half the channel frequencies are assigned to cells in the first row of cells, and the remainder are assigned to cells in the second row.

US Patent:

7626962, Dec 1, 2009

Filed:

Nov 16, 2006

Appl. No.:

11/560418

Inventors:

Ming Zhang - Bellevue WA, US
Jun Shen - Redmond WA, US

Assignee:

AT&T Mobility II LLC - Atlanta GA

International Classification:

H04W 4/00

US Classification:

370329, 4551662

Abstract:

Taught herein are devices, systems, and methods for creating, procuring, and maintaining a priority scheme for cell broadcast messages. In an exemplary embodiment, the priority scheme includes a plurality of cell broadcast channels (CBCH) that are assigned logic groups, which in turn are assigned a priority level. Accordingly, cell broadcast (CB) messages with higher priority levels are displayed first on the receiving device.

US Patent:

7640460, Dec 29, 2009

Filed:

Feb 28, 2007

Appl. No.:

11/680477

Inventors:

Paramvir Bahl - Issaquah WA, US
Ranveer Chandra - Kirkland WA, US
Lun Li - Pasadena CA, US
David A. Maltz - Bellevue WA, US
Ming Zhang - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 11/00

US Classification:

714 47

Abstract:

Exemplary methods, computer-readable media, and systems for detecting a fault by a packet trace, includes monitoring at least one packet transmitted to or received from, an computing device of an end user, between one or more computing devices implementing at least one of a service or an application on an enterprise network. The process also includes identifying whether an abnormal condition occurred on the computing device of the end user based on monitoring at least one packet transmitted to or received from, the computing device of the end user; and detecting a fault by using an algorithm based on monitoring at least one packet transmitted or received from, the computing device of the end user; wherein the fault indicates a desired course of action did not occur while the computing device of the end user uses at least one of the service or the application in the enterprise network.

US Patent:

7817547, Oct 19, 2010

Filed:

Oct 2, 2007

Appl. No.:

11/865988

Inventors:

Ming Zhang - Redmond WA, US
Ratul Mahajan - Seattle WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 11/00
G06F 15/173
H04L 12/26

US Classification:

370231, 3702362, 370252, 370449, 709224

Abstract:

The claimed subject matter provides systems and/or methods that uncovers detailed differences in the performance of different Internet Service Provider ISP) networks. The system can include components, devices, and/or processes that utilize a list of target Internet Service Provider (ISP) networks to create a list of Internet Protocol (IP) addresses to interrogate, distribute the list of addresses to measurement nodes and obtains in return probing results from the measurement nodes, the probing results employed thereafter to provide comparative performance metrics associated with the target Internet Service Provider (ISP) networks.

US Patent:

7864729, Jan 4, 2011

Filed:

Nov 16, 2009

Appl. No.:

12/619146

Inventors:

Ming Zhang - Bellevue WA, US
Jun Shen - Redmond CA, US

Assignee:

AT&T Mobility II LLC - Atlanta GA

International Classification:

H04W 4/00

US Classification:

370329, 4551662

Abstract:

Devices, systems, and methods for creating, procuring, and maintaining a priority scheme for cell broadcast messages. In an exemplary embodiment, the priority scheme includes a plurality of cell broadcast channels (CBCH) that are assigned logic groups, which in turn are assigned a priority level. Accordingly, cell broadcast (CB) messages with higher priority levels are displayed first on the receiving device.

US Patent:

7925765, Apr 12, 2011

Filed:

Apr 7, 2006

Appl. No.:

11/400103

Inventors:

Ranveer Chandra - Kirkland WA, US
Venkata N. Padmanabhan - Sammamish WA, US
Ming Zhang - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/16

US Classification:

709228, 709227, 34082501, 34082502, 34082503, 34082504

Abstract:

Communication software to aid portable computers monitor, and correct problems accessing a network through a wireless access point. The software controls the exchange of information with other portable computers in the vicinity of the wireless access point. The information exchanged may be used to diagnose problems at the wireless layer, the network layer, the transport layer or the application layer. The information exchanged may provide information about the configuration of computers that successfully or unsuccessfully communicate through the wireless access point. A portable computer receiving this configuration information may compare it to similar information about its own configuration to diagnose problems. Such software may be of particular benefit for portable computers experiencing difficulty connecting to a network at a wireless hot spot.

US Patent:

8015139, Sep 6, 2011

Filed:

Feb 28, 2008

Appl. No.:

12/039703

Inventors:

Paramvir Bahl - Sammamish WA, US
Ranveer Chandra - Kirkland WA, US
Srikanth Kandula - Somerville MA, US
David A. Maltz - Bellevue WA, US
Ming Zhang - Redmond WA, US
Albert Greenberg - Seattle WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06N 5/04

US Classification:

706 46, 709224, 709223

Abstract:

Candidates that are potentially responsible for user-perceptible network problems may be inferred. In an example embodiment, a system includes an inference engine to produce a list of candidates that are potentially responsible for user-perceptible network problems, with the candidates being network components that may include both services and network elements. A response to a service request may be a non response, an incorrect response, an untimely correct response, or a timely correct response. The user-perceptible network problems may include the untimely correct response as well as the non response and the incorrect response. In another example embodiment, a method includes monitoring a network and producing a list of candidates that are potentially responsible for user-perceptible network problems. The candidates of the list may include both services and network elements of the monitored network.