John Andrew Chen

US Patent:

6425781, Jul 30, 2002

Filed:

Jan 27, 2000

Appl. No.:

09/492895

Inventors:

Elliot Bernstein - Glen Cove NY
John Chen - Danville CA

Assignee:

Bel-Fuse, Inc. - Jersey City NJ

International Classification:

H01R 2402

US Classification:

439490, 439676

Abstract:

An RJ jack includes a first housing having bottom, side, rear, front and top walls defining an interior chamber and an opening through the front wall through which a plug may be received into the interior chamber. A plurality of contact fingers extend from beneath the bottom wall to and over the front wall and into the interior chamber. The spacing between the contact fingers in the interior chamber is equal to the spacing of corresponding contacts in the plug with the spacing of the contact fingers extending beneath the bottom wall being substantially greater. A second housing is removably secured to the rear wall of the first housing, the second housing containing a plurality of magnetic elements. At least two guides for receiving light emitting devices are formed on the rear wall of the second housing. The top wall extends over the first and second housings and has a stopper for limiting movement of the plug within the chamber and a locking mechanism for releasably securing the plug within the chamber, and is transparent for transmitting light from the light emitting devices.

US Patent:

7917092, Mar 29, 2011

Filed:

Dec 13, 2005

Appl. No.:

11/302299

Inventors:

Ana Lucia Iacono - Garden City NY, US
Arty Chandra - Manhasset Hills NY, US
Inhyok Cha - Yardley PA, US
John S. Chen - Downingtown PA, US
Yingxue Li - Exton PA, US
James C. Otto - Melbourne FL, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

H04B 1/00
H04B 15/00
H04B 17/00
H04M 1/00
H04W 4/00

US Classification:

455 634, 4555621, 455 6711, 4555757, 370338

Abstract:

An apparatus and a method for improving packet transmission and reducing latency in VoIP over WLAN using switched beam antennas having multiple directional antenna beams are disclosed. In an access point having a switched beam antenna, or other smart antenna system, the present invention extends the coverage area of an access point for authentication and association of a new WTRU, extends the access points coverage area during in session transmissions with a WTRU, and adjusts data rates. The method also controls Contention Period (CP)/Contention Free Period (CFP) timing amongst beams emanating from an access point having a switched beam antenna, or other smart antenna system. Fast diversity switching, frame level switching, lowered data rates, and scanning multiple directional antenna beams for the optimum transmission beam are disclosed to improve beam selection and packet transmission.

US Patent:

7979768, Jul 12, 2011

Filed:

Mar 20, 2007

Appl. No.:

11/688397

Inventors:

Mohammed Sammour - Montreal, CA
Stephen E. Terry - Northport NY, US
John S. Chen - Downingtown PA, US
Guodong Zhang - Farmingdale NY, US
Arty Chandra - Manhasset Hills NY, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G08C 25/02

US Classification:

714748, 709237, 455522, 370345

Abstract:

A receiver sends hybrid automatic repeat request (H-ARQ) feedback for a current packet and at least one previous packet, whereby an error is detected based on the H-ARQ feedback. The receiver sends H-ARQ feedback with an identification of the packet or a sequence number of a packet that the receiver expects to receive next. The receiver stores a packet in a memory before combining the packet with a previously received packet, and decodes the stored packet after failing to decode a combined packet to avoid a corruption error. The receiver may set a timer when sending a NACK. If the receiver fails to receive a packet until expiration of the timer, the receiver initiates a process for recovering the packet. Each H-ARQ feedback may be associated with other attributes. Some H-ARQ processes may operate in an asynchronous mode while others in a synchronous mode in the same direction.

US Patent:

8126021, Feb 28, 2012

Filed:

May 1, 2007

Appl. No.:

11/742847

Inventors:

Jin Wang - Central Islip NY, US
Stephen E. Terry - Northport NY, US
Arty Chandra - Manhasset Hills NY, US
John S. Chen - Downingtown PA, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

H04J 3/06

US Classification:

370530, 4555501

Abstract:

A method and apparatus for detecting a radio link (RL) failure for uplink (UL) and downlink (DL) in a long term evolution (LTE) wireless communication system including at least one wireless transmit/receive unit (WTRU) and at least one evolved Node-B (eNodeB) are disclosed. A determination is made as to whether an RL has an in-synchronization status or an out-of-synchronization status. An RL failure is declared if an out-of-synchronization status is detected.

US Patent:

8160049, Apr 17, 2012

Filed:

Feb 2, 2007

Appl. No.:

11/670639

Inventors:

Arty Chandra - Manhasset Hills NY, US
Guodong Zhang - Farmingdale NY, US
John S. Chen - Downingtown PA, US
Mohammed Sammour - Montreal, CA
Stephen E. Terry - Northport NY, US

Assignee:

Interdigital Technology Corporation - Wilmington DE

International Classification:

H04J 3/24

US Classification:

370349, 370230, 370231, 370235, 370236, 455418, 455419, 455420

Abstract:

A method and apparatus for dynamically configuring a memory for hybrid automatic repeat request (H-ARQ) processes in a receiving node to permit a more flexible H-ARQ memory configuration and improve the performance of H-ARQ processes. An H-ARQ memory in the receiving node is reserved for a plurality of H-ARQ processes. A transmitting node dynamically configures the H-ARQ memory in the receiving node for each H-ARQ transmission so that the memory requirement for a plurality of H-ARQ processes exceeds the H-ARQ memory capacity. If there is insufficient H-ARQ memory available to support H-ARQ transmissions, only a subset of the plurality of H-ARQ processes may be activated at a time. When there is insufficient H-ARQ memory for processing H-ARQ transmissions, a negative acknowledgement (NACK), an acknowledgement (ACK), nothing, and/or information indicating the reason for a failed transmission may be transmitted to a transmitting node.

US Patent:

8165594, Apr 24, 2012

Filed:

Aug 17, 2007

Appl. No.:

11/840534

Inventors:

Jin Wang - Central Islip NY, US
Arty Chandra - Manhasset Hills NY, US
John S. Chen - Ann Arbor MI, US
Mohammed Sammour - Montreal, CA
Stephen E. Terry - Northport NY, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

H04W 72/00

US Classification:

4554521, 455450, 455 45, 4554522, 370329, 370330, 370341, 370478

Abstract:

The present invention is a method and apparatus for resource allocation signaling for grouping user real time services. Uplink signaling for voice activity reporting of each user's transition between an active state and an inactive voice state is sent from a wireless transmit/receive unit to a Node B. Radio resource allocation to users of a wireless communication system varies based on user measurement reporting, a pre-determined pattern such as frequency hopping, or a pseudorandom function. Grouping methods are adjusted to better utilize the voice activity factor, so that statistical multiplexing can be used to more efficiently utilize physical resources.

US Patent:

8619747, Dec 31, 2013

Filed:

Jan 31, 2007

Appl. No.:

11/669269

Inventors:

Stephen E. Terry - Northport NY, US
Jin Wang - Central Islip NY, US
Arty Chandra - Manhasset Hills NY, US
John S. Chen - Downingtown PA, US
Guodong Zhang - Farmingdale NY, US

Assignee:

Interdigital Technology Corporation - Wilmington DE

International Classification:

H04J 1/00
H04B 7/208

US Classification:

370344, 370343

Abstract:

In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WRTUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

US Patent:

20070230394, Oct 4, 2007

Filed:

Mar 22, 2007

Appl. No.:

11/689771

Inventors:

Jin Wang - Central Islip NY, US
John Chen - Downingtown PA, US
Mohammed Sammour - Montreal, CA
Stephen Terry - Northport NY, US
Arty Chandra - Manhasset Hills NY, US
Guodong Zhang - Farmingdale NY, US

Assignee:

INTERDIGITAL TECHNOLOGY CORPORATION - Wilmington DE

International Classification:

H04Q 7/00

US Classification:

370328000

Abstract:

A Node-B sends a polling message to a wireless transmit/receive unit (WTRU). The WTRU sends an uplink synchronization burst in response to the polling message without contention. The Node-B estimates an uplink timing shift based on the synchronization burst and sends an uplink timing adjustment command to the WTRU. The WTRU then adjusts uplink timing based on the uplink timing adjustment command. Alternatively, the Node-B may send a scheduling message for uplink synchronization to the WTRU. The WTRU may send a synchronization burst based on the scheduling message. Alternatively, the WTRU may perform contention-based uplink synchronization after receiving a synchronization request from the Node-B. The WTRU may enter an idle state instead of performing a handover to a new cell when the WTRU moves to the new cell. A discontinuous reception (DRX) interval for the WTRU may be set based on activity of the WTRU.