Pulse or digital communications – Miscellaneous
Reexamination Certificate
2007-10-31
2009-11-03
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Miscellaneous
C375S219000, C375S358000
Reexamination Certificate
active
07613270
ABSTRACT:
The present invention includes a time-division-multiple-access (TDMA) communication system having a base station and at least one mobile station, each transmitting and receiving an analog radio-frequency signal carrying digitally coded speech. The speech is encoded using a vocoder which samples a voice signal at variable encoding rates. During periods when the radio-frequency channel is experiencing high levels of channel interference, the encoded voice channel having a lower encoding rate is chosen. This low-rate encoded voice is combined with the high degree of channel coding necessary to ensure reliable transmission. When the radio-frequency channel is experiencing low levels of channel interference, less channel coding is necessary and the vocoder having a higher encoding rate is used. The high-rate encoded voice is combined with the lower degree of channel coding necessary to ensure reliable transmission. The appropriate levels of channel coding necessary for reliable transmission are determined by various channel metrics, such as frame erase rate and bit error rate. The determination of the appropriate vocoder rate and level of channel coding for both the uplink and downlink may be determined centrally at the base station, with the vocoder rate and level of channel coding for the uplink being relayed to the mobile station. Alternatively, the appropriate vocoder rate and level of channel coding for the downlink may be determined by the mobile station, and the appropriate vocoder rate and level of channel coding for the uplink may be determined by the base station.
REFERENCES:
patent: 4910794 (1990-03-01), Mahany
patent: 5341456 (1994-08-01), DeJaco
patent: 5396516 (1995-03-01), Padovani et al.
patent: 5541657 (1996-07-01), Yamamoto et al.
patent: 5638408 (1997-06-01), Takaki
patent: 5673266 (1997-09-01), Li
patent: 5701294 (1997-12-01), Ward et al.
patent: 5734967 (1998-03-01), Kotzin et al.
patent: 5794180 (1998-08-01), McCree
patent: 5825761 (1998-10-01), Tanaka et al.
patent: 5828672 (1998-10-01), Labonte et al.
patent: 5907555 (1999-05-01), Raith
patent: 5940439 (1999-08-01), Kleider et al.
patent: 5970443 (1999-10-01), Fujii
patent: 5974106 (1999-10-01), Dupont et al.
patent: 6009553 (1999-12-01), Martinez et al.
patent: 6049537 (2000-04-01), Proctor et al.
patent: 6104726 (2000-08-01), Yip et al.
patent: 6108372 (2000-08-01), Tidemann, Jr. et al.
patent: 6108374 (2000-08-01), Balachandran et al.
patent: 6134220 (2000-10-01), Le Strat et al.
patent: 6154489 (2000-11-01), Kleider et al.
patent: 6163577 (2000-12-01), Ekudden et al.
patent: 6215827 (2001-04-01), Balachandran et al.
patent: 6252854 (2001-06-01), Hortensius et al.
patent: 6301265 (2001-10-01), Kleider et al.
patent: 6356211 (2002-03-01), Shimoyoshi et al.
patent: 6389066 (2002-05-01), Ejzak
patent: 6418163 (2002-07-01), Tidemann et al.
patent: 6480556 (2002-11-01), Guey
patent: 6498625 (2002-12-01), Yamamoto et al.
patent: 6529730 (2003-03-01), Komaili et al.
patent: 6539205 (2003-03-01), Wan et al.
patent: 6542736 (2003-04-01), Parkvall et al.
patent: 6731948 (2004-05-01), Lee et al.
patent: 6912228 (2005-06-01), Dahlman et al.
patent: 7072416 (2006-07-01), Sudo et al.
patent: 7164710 (2007-01-01), Komaili et al.
patent: 2002/0035713 (2002-03-01), Jarvinen et al.
patent: 2003/0002446 (2003-01-01), Komaili et al.
patent: 2718906 (1995-10-01), None
patent: 2306867 (1997-05-01), None
patent: 1990-030238 (1990-01-01), None
patent: 1990-087735 (1990-03-01), None
patent: 1997-023212 (1997-01-01), None
patent: 1997-149009 (1997-06-01), None
patent: WO 96/22639 (1996-07-01), None
patent: WO 98/00984 (1998-01-01), None
patent: WO 98/03030 (1998-01-01), None
Komaili Jaleh
Wan Yongbing
Bocure Tesfaldet
Lee Hong Degerman Kang & Waimey
LG Electronics Inc.
Williams Lawrence B
LandOfFree
System and method for adaptive multi-rate (AMR) vocoder rate... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for adaptive multi-rate (AMR) vocoder rate..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for adaptive multi-rate (AMR) vocoder rate... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4136247