Jia Ping Wang

6928485, Aug 9, 2005

Jun 23, 2000

09/603154

Balachander Krishnamurthy - New York NY, US
Jia Wang - White Plains NY, US

AT&T Corp. - New York NY

G06F015/173

709242, 709220, 709223, 709224

A method for clustering together network clients for guiding of placement of network servers is disclosed. A number of routing table prefix/netmask entries are aggregated and unified into a tubular format. The routing table entries may be converted into a singular format. A network server log is used to extract a number of client IP addresses which are compared to the entries within the unified routing table. A common prefix shared by a number of the client IP addresses and an entry in the unified routing table is determined and used to cluster the clients together in a client cluster. Network servers, such as proxy server, cache servers, content distribution servers and mirror server may be placed in the network according to the client clusters.

7191168, Mar 13, 2007

Sep 25, 2002

10/254378

Adam Louis Buchsbaum - Madison NJ, US
Glenn Stephen Fowler - Scotch Plains NJ, US
Balachander Krishnamurthy - New York NY, US
Jia Wang - Summit NJ, US

AT&T Corp. - New York NY

G06F 17/30

707 2

The present invention increases the efficiency of performing longest prefix matching operations by selecting a radix-encoded trie structure optimized with respect to memory cost. The structure is optimized by determining memory costs for retrie structures indexed on different numbers of high-order characters, and then selecting the structure corresponding to the lowest memory cost. The optimization improves performance in IP look-up operations as well as longest-prefix matching operations performed on general alphabets.

7219160, May 15, 2007

Nov 3, 2000

09/705675

Adam Louis Buchsbaum - Madison NJ, US
Glenn Stephen Fowler - Scotch Plains NJ, US
Balachander Krishnamurthy - New York NY, US
Jia Wang - Summit NJ, US

AT&T Corp. - New York NY

G06F 15/173

709242, 709241, 709220

A method for clustering together network IP addresses is disclosed. A number of IP addresses are received and processed to determine which IP addresses share a longest prefix matching. The longest prefix matching process is performed according to radix encoded trie which facilitates on-line clustering of the IP addresses. Client and/or server IP addresses may be clustered in accordance with the teachings herein.

7627691, Dec 1, 2009

Apr 3, 2007

11/732279

Adam Louis Buchsbaum - Madison NJ, US
Glenn Stephen Fowler - Scotch Plains NJ, US
Balachander Krishnamurthy - New York NY, US
Jia Wang - Summit NJ, US

AT&T Intellectual Property II, L.P. - Reno NV

G06F 15/173

709242, 37039531, 370255, 370392, 709220, 7071041

A method for clustering together network IP addresses is disclosed. A number of IP addresses are received and processed to determine which IP addresses share a longest prefix matching. The longest prefix matching process is performed according to radix encoded trie which facilitates on-line clustering of the IP addresses. Client and/or server IP addresses may be clustered in accordance with the teachings herein.

7889666, Feb 15, 2011

Dec 26, 2007

12/005191

Dan Pei - Jersey City NJ, US
Zhuoqing Morley Mao - Ann Arbor MI, US
Jia Wang - Randolph NJ, US
Ying Zhang - Ann Arbor MI, US

AT&T Intellectual Property II, L.P. - Reno NV

H04L 12/26

370242

A system and method is disclosed for a scalable and robust network troubleshooting framework for VPN backbones addressing scalability and data imperfection. The framework takes advantage of lattice data structures to identify multi-dimensional hierarchical events that occur frequently across multiple data sources. Correlation schemes and inference rules are created for diagnosing network events and generating actionable reports for important events.

7958075, Jun 7, 2011

Jun 28, 2007

11/824073

David L. Applegate - Maplewood NJ, US
Gruia Calinescu - Wilmette IL, US
David S. Johnson - Madison NJ, US
Howard Karloff - New York NY, US
Katrina Ligett - Pittsburgh PA, US
Jia Wang - Randolph NJ, US

AT&T Intellectual Property II, LP - Atlanta GA

G06F 17/00
G06N 5/02

706 47

A geometric model is considered for the problem of minimizing access control lists (ACLs) in network routers. A colored rectilinear pattern is created within an initially white rectangular canvas, and the basic operation is to choose a subrectangle and paint it a single color, overwriting all previous colors in the rectangle. The method operates on rectangular rule lists (RRLs) and access control lists (ACLs) in which all rectangles are strips that extend either the full length or the full height of the canvas. A polynomial-time algorithm optimally constructs such patterns when, as in the ACL application, the only colors are black and white (permit or deny). That algorithm is complemented by a significantly faster approximation algorithm that is guaranteed to be no worse than 3/2 optimal.

8111626, Feb 7, 2012

Dec 31, 2008

12/347444

Aman Shaikh - Summit NJ, US
Cheng Ee - Rockaway NJ, US
Ajay Mahimkar - Austin TX, US
Jia Wang - Randolph NJ, US
Jennifer Yates - Morristown NJ, US
Yin Zhang - Austin TX, US
Zihui Ge - Florham Park NJ, US

AT&T Intellectual Property I, L.P. - Atlanta GA

H04L 12/26
G01R 31/08
H04J 1/16

370242

A method and apparatus for providing event correlation in a network are disclosed. For example, the method extracts a plurality of events of interest from a database, and creates one or more event time series from the plurality of events of interest, wherein each of the one or more event time series comprises a set of events of a same type and of a same location that occur within a given time period. The method forms one or more composite events from the one or more event time series, and performs one or more pair-wise correlations for at least one of: the event time-series, or the one or more composite events. The method then identifies one or more pair-wise correlations that are statistically significant.

8219706, Jul 10, 2012

Nov 14, 2008

12/271014

Alexandre Gerber - Madison NJ, US
Jia Wang - Randolph NJ, US
Oliver Spatscheck - Randolph NJ, US
Jennifer Yates - Morristown NJ, US
Michael Merritt - Mendham NJ, US

AT&T Intellectual Property I, LP - Reno NV

G06F 15/173

709238, 709239, 709240, 709242, 709243, 709244, 709249

A method includes receiving network distance information, receiving a request from a client for an identity of a peer providing content, and identifying a first peer and a second peer providing the content. The network distance information includes a compilation of network distance information provided by a plurality of service providers. The method further includes determining that a network distance between the first peer and the client is less than a network distance between the second peer and the client based on the network distance information, and providing the identity of the first peer to the client.