Matthew T Sherman

US Patent:

6973269, Dec 6, 2005

Filed:

Oct 18, 2001

Appl. No.:

09/978581

Inventors:

David M. Britz - Rumson NJ, US
Matthew J. Sherman - Succasunna NJ, US
Jeevan P. Dodley - Parsippany NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04J014/00

US Classification:

398 51, 398 54, 398 55, 398 56

Abstract:

An architecture for facilitating wavelength-specific and packet-switched routing comprises a primary metropolitan fiber ring, a primary distribution/aggregation node in the primary metropolitan fiber ring and a local service domain further comprising a secondary aggregation node in communication with the primary distribution/aggregation node. A network to provide local metropolitan switching and routing and broadband local access distribution described in terms of its component layers comprises a distribution/aggregation routing layer that interfaces with a primary fiber metropolitan ring and a local customer primary distribution/aggregation node via transport branches of a mesh architecture, a local distribution and routing layer that routes specific wavelengths and newly assigned wavelengths to and from a customer's premises and a cross-connect layer that handles customer specific wavelength and packet routing via one of fiber, millimeter wave radio and free space optical communications.

US Patent:

6980810, Dec 27, 2005

Filed:

May 12, 2003

Appl. No.:

10/435875

Inventors:

Kenny Xiaojian Huang - Somerset NJ, US
Matthew J. Sherman - Succasunna NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04Q007/20
H04J003/24
G01S003/28

US Classification:

455450, 455442, 455434, 342386, 370349

Abstract:

Methods, devices and systems for WLAN communication are described. Intercell interference between overlapping WLAN cells is mitigated by a combination of frequency reuse, code division and time resource negotiation. Information used for time resource negotiation can be broadcast via beacon signal or communicated via a wireline backbone system which interconnects access points.

US Patent:

6983109, Jan 3, 2006

Filed:

Oct 18, 2001

Appl. No.:

09/981240

Inventors:

David M. Britz - Rumson NJ, US
Matthew J. Sherman - Succasunna NJ, US
Jeevan P. Dodley - Parsippany NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04J 14/00

US Classification:

398 51, 398 54, 398 55, 398 56, 398166

Abstract:

A method for facilitating wavelength-specific and packet-switched routing comprises the steps of demultiplexing wavelengths propagating on a primary metropolitan fiber ring, determining a destination address for the wavelength, accessing a look-up table, determining if the destination address matches a local address contained in the look-up table and switching the wavelength based on a result of the determining step. A method for providing local metropolitan switching and routing and broadband local access distribution described in terms of the functions of the layers comprises the steps of interfacing with a primary fiber metropolitan ring and a local customer primary distribution/aggregation node via transport bran ches of a mesh architecture, routing specific wavelengths and newly assigned wavelengths to and from a customer's premises and handling customer specific wavelength and packet routing via one of fiber, millimeter wave radio and free space optical communications.

US Patent:

7280757, Oct 9, 2007

Filed:

Aug 31, 2005

Appl. No.:

11/216820

Inventors:

David M. Britz - Rumson NJ, US
Matthew J. Sherman - Succasunna NJ, US
Jeevan P. Dodley - Parsippany NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04J 14/00

US Classification:

398 58, 398 59, 398 66

Abstract:

An architecture for facilitating wavelength-specific and packet-switched routing comprises a primary metropolitan fiber ring, a primary distribution/aggregation node in the primary metropolitan fiber ring and a local service domain further comprising a secondary aggregation node in communication with the primary distribution/aggregation node. A network to provide local metropolitan switching and routing and broadband local access distribution described in terms of its component layers comprises a distribution/aggregation routing layer that interfaces with a primary fiber metropolitan ring and a local customer primary distribution/aggregation node via transport branches of a mesh architecture, a local distribution and routing layer that routes specific wavelengths and newly assigned wavelengths to and from a customer's premises and a cross-connect layer that handles customer specific wavelength and packet routing via one of fiber, millimeter wave radio and free space optical communications.

US Patent:

7293103, Nov 6, 2007

Filed:

Jan 11, 2002

Appl. No.:

10/042179

Inventors:

Wei Lin - Warren NJ, US
Matthew J. Sherman - Succasunna NJ, US

Assignee:

AT&T Corporation - Bedminster NJ

International Classification:

G06F 15/16

US Classification:

709236, 709232, 709245, 370400, 37938701

Abstract:

A method and a system is disclosed for providing access in a centralized manner to a communications medium that is suitable for allowing use of a plurality of Home Phoneline Network Association (HPNA) v2 frames. A plurality of messages are transmitted between a first enhanced station and a second enhanced station. Each transmitted message is transmitted in an enhanced frame that has timing to allow an Inter-Frame Gap (IFG). A blocking signal, such as a sine wave signal and a cosine wave signal, is transmitted during at least one IFG between enhanced frames to mask the presence of the IFG to a non-enhanced STA. Alternatively, the blocking signal can be transmitted during at least one reply message. Contention-free access to the communications medium is also provided by transmitting messages in a highest priority level available in an HPNA v2 frame.

US Patent:

7298757, Nov 20, 2007

Filed:

Jan 11, 2002

Appl. No.:

10/042165

Inventors:

Wei Lin - Warren NJ, US
Matthew J. Sherman - Succasunna NJ, US

Assignee:

AT&T Corporation - Bedminster NJ

International Classification:

H04L 12/413

US Classification:

370447, 370450, 370528

Abstract:

A method and a system provide access to a communications medium that is suitable for allowing use of a plurality of Home Phoneline Network Association (HPNA) v2 frames in a centralized manner. Each HPNA v2 frame is timed to allow an Inter-Frame Gap (IFG) portion having a duration that is substantially a duration defined by an HPNA v2 protocol specification for an IFG portion of an HPNA v2 frame. A plurality of frames are generated in the communications medium with at least one frame of the plurality of frames having timing to allow a Shortened Inter-Frame Gap (SIFG) portion and a contention-free portion. The SIFG portion is less than about 17 μsec in duration. Access to the communications medium is then provided for at least one station (STA) during the contention-free portion of a frame having timing to allow the SIFG portion.

US Patent:

7310326, Dec 18, 2007

Filed:

Jan 11, 2002

Appl. No.:

10/042166

Inventors:

Wei Lin - Warren NJ, US
Matthew J. Sherman - Succasunna NJ, US

Assignee:

AT&T Corporation - Bedminster NJ

International Classification:

H04B 7/212

US Classification:

370348, 370444

Abstract:

A method and system is disclosed for providing access in a centralized manner to a communications medium that is suitable for allowing use of a plurality of Home Phoneline Network Association (HPNA) v2 frames, and such that each HPNA v2 frame is timed to allow a plurality of physical layer priority level slots. A list of sessions in enhanced stations (STAs) using the communications medium is maintained. At least one second message is transmitted from at least one selected non-MC STA in response to a first message during the same HPNA v2 frame. Accordingly, at least one second message can be transmitted to the MC STA and/or to another non-MC STA. At least a portion of the second message simultaneously with the step of transmitting the first message. Similarly, a portion of at least two second messages are transmitted simultaneously with each other.

US Patent:

7606258, Oct 20, 2009

Filed:

Jun 29, 2007

Appl. No.:

11/824364

Inventors:

Wei Lin - Warren NJ, US
Matthew J. Sherman - Succasunna NJ, US

Assignee:

AT&T Intellectual Property II, L.P. - Bedminster NJ

International Classification:

H04L 12/413

US Classification:

370447, 370450, 370520

Abstract:

A method and a system provide access to a communications medium that is suitable for allowing use of a plurality of Home Phoneline Network Association (HPNA) v2 frames in a centralized manner. Each HPNA v2 frame is timed to allow an Inter-Frame Gap (IFG) portion having a duration that is substantially a duration defined by an HPNA v2 protocol specification for an IFG portion of an HPNA v2 frame. A plurality of frames are generated in the communications medium with at least one frame of the plurality of frames having timing to allow a Shortened Inter-Frame Gap (SIFG) portion and a contention-free portion. The SIFG portion is less than about 17 μsec in duration. Access to the communications medium is then provided for at least one station (STA) during the contention-free portion of a frame having timing to allow the SIFG portion.