Bing Chen - Westfield NJ, US David Beaumont Ramsden - Wall NJ, US
Assignee:
AT&T Corp. - New York NY
International Classification:
H04L 12/26
US Classification:
370250, 370473, 379 2703
Abstract:
A method is described for detecting total end-to-end loss of data packets in a packet network that does not require direct access to the packet network. A test signal is generated at a source end point indirectly coupled to the packet network. The test signal is transmitted over the packet network to a destination end point also indirectly coupled to the packet network. At the destination end point a modified test signal is received and examined to detect irregularities and then processed to determine whether the irregularities in the recorded signal represent packet loss.
A method of measuring echo path delay in a circuit having echo cancellers after enabling an echo signal to pass through the echo cancellers. The known time for a given echo canceller to disable is subtracted from the overall test signal duration. This quantity can be subtracted from the overall echo duration to compute the echo path delay.
End-To-End Connection Packet Loss Detection Algorithm Using Power Level Deviation
Bing Chen - Westfield NJ, US David Beaumont Ramsden - Wall NJ, US
Assignee:
AT & T Intellectual Property II, L.P. - Reno NV
International Classification:
H04L 1/00
US Classification:
370252, 370242, 370248, 370473, 379 2703
Abstract:
A method is described for detecting total end-to-end loss of data packets in a packet network that does not require direct access to the packet network. A test signal is generated at a source end point indirectly coupled to the packet network. The test signal is transmitted over the packet network to a destination end point also indirectly coupled to the packet network. At the destination end point a modified test signal is received and examined to detect irregularities and then processed to determine whether the irregularities in the recorded signal represent packet loss.
Method For The Performance Testing Of Echo Cancellers Using An Artificial Segmented Test Signal
Bing Chen - Westfield NJ, US James H. James - Farmingdale NJ, US
Assignee:
AT&T Intellectual Property II, L.P. - Reno NV
International Classification:
H04M 9/08
US Classification:
3794061
Abstract:
A method for the performance testing of an echo canceller including the steps of transmitting a test signal to the echo canceller, recording an echo energy signal output from the echo canceller as a result of the test signal, measuring the energy and duration of the echo energy signal and calculating a performance score for the echo canceller based on the measured energy and duration of the echo energy signal, wherein the test signal transmitted to the echo canceller has a plurality of discrete frequency band segments of white noise representing sub-bands of an overall bandwidth ranging from about 0 kHz to about 3. 5 kHz. The test signal preferably has four discrete frequency band segments of white noise, wherein each discrete frequency band segment of the test signal is repeated in succession, whereby the test signal has a total of eight segments. Thus, the test signal can have a first frequency band segment having a bandwidth of about 0 kHz to about 1 kHz, a second frequency band segment having a bandwidth of about 1 kHz to about 2 kHz, a third frequency band segment having a bandwidth of about 2 kHz to about 3 kHz and a fourth frequency band segment having a bandwidth of about 3 kHz to about 3. 5 kHz.
Method For Troubleshooting Echo On Teleconference Bridge
Laurie Garrison - Oceanport NJ, US Bing Chen - Westfield NJ, US John Francis - Brooklyn NY, US Diane Nawrocki - Tinton Falls NJ, US David Nemec - Tinton Falls NJ, US
Assignee:
AT&T Corp. - New York NY
International Classification:
H04M 3/42
US Classification:
37920301, 37940601
Abstract:
This is a method for use in a teleconference that troubleshoots echo problems. After receiving a code to begin the troubleshooting process, all legs of the teleconference are muted except a test leg. That test leg is evaluated for echo. The process is repeated for each of the legs of the teleconference. After automatically measuring echo on all legs, results are reported to a moderator or host, who can take action such as muting all legs with echo, or discussing remedial action with each participant on a leg with echo.
Operating Method For Voice Activity Detection/Silence Suppression System
Bing Chen - Westfield NJ, US James H. James - Farmingdale NJ, US
Assignee:
AT&T Corporation - New York NY
International Classification:
G10L 11/06
US Classification:
704214, 704208, 704210, 704215, 704226, 704233
Abstract:
A VAD/SS system is connected to a channel of a transmission pipe. The channel provides a pathway for the transmission of energy. A method for operating a VAD/SS system includes detecting the energy on the channel, and activating or suppressing activation of the VAD/SS system depending upon the nature of the energy detected on the channel.
Systems And Methods To Measure The Performance Of A De-Jitter Buffer
Bing Chen - Middletown NJ, US David Ramsden - Wall NJ, US
Assignee:
AT&T Intellectual Property I, L.P. - Reno NV
International Classification:
H04J 3/06
US Classification:
370516, 370412, 370252
Abstract:
Systems and methods to measure the performance of a de-jitter buffer are disclosed. In a described example, a method to measure adaptive de-jitter buffer performance includes transmitting a known audio signal via a plurality of packets over a packet-based network, recording a received signal based on the known audio signal, and analyzing the recorded signal to determine one or more of a lower de-jitter buffer size, an upper de-jitter buffer size, a de-jitter buffer expansion speed, or a de-jitter buffer contraction speed based on the recorded signal and the known signal. The example method further includes comparing the one or more of the lower de-jitter buffer size, the upper de-jitter buffer size, the expansion speed, or the contraction speed to a performance requirement, and correcting communication network performance based on the comparison.
Operating Method For Voice Activity Detection/Silence Suppression System
Bing Chen - Westfield NJ, US James H. James - Farmingdale NJ, US
Assignee:
AT&T Intellectual Property II, L.P. - Atlanta GA
International Classification:
G10L 11/06
US Classification:
704214, 704208, 704210, 704215, 704233
Abstract:
A VAD/SS system is connected to a channel of a transmission pipe. The channel provides a pathway for the transmission of energy. A method for operating a VAD/SS system includes detecting the energy on the channel, and activating or suppressing activation of the VAD/SS system depending upon the nature of the energy detected on the channel.
Isbn (Books And Publications)
Experimentelle Optimum-Suchstrategien Auf Der Basis Der Computersimulation Zur Unterstutzung Betriebswirtschaftlicher Entscheidungsfindung
Pimco
Vp, Financial Software Developer
Tradeweb Jan 2009 - Sep 2009
Vp, Senior Application Developer
Lehman Brothers Jul 2007 - Sep 2008
Vp, Senior Analyst and Programmer
Bloomberg Lp Sep 2000 - Jul 2007
Senior Software Developer and Manager
Ibm Dec 1998 - Sep 2000
I and T Specialist
Education:
Columbia University In the City of New York 2004 - 2006
Masters, Computer Science
Ccny School of Education 2001 - 2004
Master of Science, Masters, Computer Science
Ccny School of Education 1995 - 1998
Bachelors, Bachelor of Science, Computer Science
Zhejiang University 1992 - 1995
Bachelors, Bachelor of Science, Electrical Engineering
Zhenhai Middle School
Skills:
Fixed Income Trading Systems Equities Capital Markets Bloomberg Derivatives Quantitative Finance Risk Management Finance Financial Modeling Trading Hedge Funds
San Francisco, CA Los Angeles, CA New York City, NY Shanghai, China Knoxville, TN
Work:
Google
Education:
University of Pennsylvania
About:
By day, Global Creator Development and Management Lead at YouTube, tasked with finding, cultivating and exploding the next generation of super-talent. By night, a new media entertainer and entrepreneu...
Tagline:
YouTube Global Creator Development & Management Lead | New Media Entrepreneur & Entertainer
Bing Chen
Work:
Intel Corporation
Education:
National Taiwan University - EE, National Tsing Hua University - CS