Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Reexamination Certificate
2006-08-01
2006-08-01
Nguyen, Chau (Department: 2661)
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
C370S244000, C370S352000
Reexamination Certificate
active
07085230
ABSTRACT:
A method and apparatus for determining what level of performance must be maintained by a second communication service so as to be perceived as being of equal quality to a first communication service, especially where the second communication service is subject to additional impairments not experienced by the first communication service. In one example embodiment, the present invention is applied to determining what combinations of packet loss rate and packet delay are tolerable where a packet switched telephony service is desired to be perceived to be substantially equivalent to a traditional toll-quality non-packet-switched telephone service. Empirically derived models are used to relate user perception to objectively measurable characteristics, such as packet loss rate.
REFERENCES:
patent: 4015480 (1977-04-01), Giers
patent: 4438511 (1984-03-01), Baran
patent: 5119367 (1992-06-01), Kawakatsu et al.
patent: 5200950 (1993-04-01), Foglar et al.
patent: 5282203 (1994-01-01), Oouchi
patent: 5428613 (1995-06-01), Spiotta et al.
patent: 5479576 (1995-12-01), Watanabe et al.
patent: 5539310 (1996-07-01), Basser et al.
patent: 5553059 (1996-09-01), Emerson et al.
patent: 5572570 (1996-11-01), Kuenzig
patent: 5715372 (1998-02-01), Meyers et al.
patent: 5742929 (1998-04-01), Kallman et al.
patent: 5825849 (1998-10-01), Garland et al.
patent: 5835565 (1998-11-01), Smith et al.
patent: 5867813 (1999-02-01), Di Pietro et al.
patent: 5887027 (1999-03-01), Cohen et al.
patent: 5898668 (1999-04-01), Shaffer
patent: 5933475 (1999-08-01), Coleman
patent: 5940471 (1999-08-01), Homayoun et al.
patent: 5940479 (1999-08-01), Guy et al.
patent: 5978783 (1999-11-01), Meyers et al.
patent: 6041048 (2000-03-01), Erickson et al.
patent: 6046979 (2000-04-01), Bauman
patent: 6064653 (2000-05-01), Farris
patent: 6067350 (2000-05-01), Gordon
patent: 6094464 (2000-07-01), Ebringer et al.
patent: 6111949 (2000-08-01), Sheets et al.
patent: 6128291 (2000-10-01), Perlman et al.
patent: 6147988 (2000-11-01), Bartholomew et al.
patent: 6169896 (2001-01-01), Sant et al.
patent: 6172970 (2001-01-01), Ling et al.
patent: 6192109 (2001-02-01), Amrany et al.
patent: 6243373 (2001-06-01), Turock
patent: 6246978 (2001-06-01), Hardy
patent: 6256304 (2001-07-01), Vayrynen
patent: 6256608 (2001-07-01), Malvar
patent: 6275797 (2001-08-01), Randic
patent: 6282192 (2001-08-01), Murphy et al.
patent: 6285653 (2001-09-01), Koeman et al.
patent: 6304634 (2001-10-01), Hollier et al.
patent: 6353609 (2002-03-01), Ethridge et al.
patent: 6356601 (2002-03-01), Chen et al.
patent: 6363065 (2002-03-01), Thornton et al.
patent: 6370120 (2002-04-01), Hardy
patent: 6377636 (2002-04-01), Paulraj et al.
patent: 6389005 (2002-05-01), Cruickshank
patent: 6434606 (2002-08-01), Borella et al.
patent: 6452922 (2002-09-01), Ho
patent: 6512746 (2003-01-01), Sand
patent: 6574216 (2003-06-01), Farris et al.
patent: 6618385 (2003-09-01), Cousins
patent: 6633545 (2003-10-01), Milbrandt
patent: 6665271 (2003-12-01), Thomas et al.
patent: 1079573 (2001-02-01), None
patent: 98/59509 (1998-12-01), None
patent: 00/33511 (2000-06-01), None
ITU-T, Methold for subjective determination of transmission quality, Aug. 1996, P.800, entire document.
ITU-T, Methold for evaluation of service from standpoint of speech transmission quality, 1993, P.82, entire document.
ITU-T, Subjective performance assesment of telephone-band and wideband digital codecs, Feb. 1996, P.830, entire document.
ITU-T, Subjective listenign test methold for evaluationg digital circuit multiplication and packetized voice systems, Mar. 1993, P.84, entire document.
ITU-T, Methold for subjective performance assesment of quality of speech voice output devices, Jun. 1994, P.85, entire document.
Peng et al., “Bark Scale Equalizer Design Using Warped Filter”, IEEE, 2001, pp. 3317-3320.
Baker, et al., “PPP Bridging Control Protocol (BCP)”, Internet Engineering Task Force, Request for Comment 1638, Jun. 1994.
Chan et al., “Differentiated Services Quality of Service Policy Information Base”, Internet Engineering Task Force, Request for Comment 3317, Mar. 2003.
Schulzrinne, et al., “RTP: A Transport Protocol for Real-Time Applications”, Internet Engineering Task Force, Request for Comments: 1889, Jan. 1996.
ITU-T, Series G: Transmission System and Media, Digital Systems and Networks, Recommendation G.107, May 2000.
ITU-T Study Group 12, “Objective Quality Measurement of Telephone-Band (300-3400Hz) Speech Codecs”, ITU-T Recommendation P.861, Feb. 27, 1998, pp. 1-33 .
ITU-T Study Group 12, “Perceptual Evaluation of Speech Quality (PESQ): An Objective Assessment of Narrow-Band Telephone Networks and Speech Codecs”, ITU-T Recommendation P.862, Feb. 23, 200112.
Anonymous, “Real=Time Quality Measurement for Telecommunication Call—By Alerting Subscriber of Call Selected to be in Sample Before Going to Operator”, WPI World Patent Information Derwent, Derwent, GB, vol. 46, No. 92, Oct. 25, 199212.
Smith III et al., “Bark and FRB Bilinear Transforms”, IEEE, 1999, pp. 697-708.
MCI, LLC
Moore Ian N.
Nguyen Chau
LandOfFree
Method and system for evaluating the quality of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for evaluating the quality of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for evaluating the quality of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3642846