US Patent No: 6,356,595

Number of patents in Portfolio can not be more than 2000

Method and apparatus for decoding continuously coded convolutionally encoded messages

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Abstract

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A decoding method for use in a communications system employing a communication channel in which a message is convolutionally encoded by a base station encoder and transmitted to a remote terminal during a time slot allocated to at least that remote terminal. The encoder is not completely reset immediately prior to the allocated time slot such the encoder state is unknown at the onset thereof. The decoding method includes assigning a most likelihood probability for an initial encoder state as being one of a number of predetermined encoder states; and, convolutionally decoding ensuing bits of the message based on the assumption of the initial encoder state as one of the predetermined states. The method affords low error rate decoding, and allows for improved power conservation by a mobile station, since the mobile station need not awaken significantly prior to its allocated time slot. Preferably, a Viterbi decoder is used to perform the convolutional decoding. The method has particular utility when used for decoding page messages indicative of call notifications in a paging channel of a code division multiple access (CDMA) wireless telecommunications system.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SONY CORPORATIONTOKYO, JP39670
SONY ELECTRONICS INC.PARK RIDGE, NJ2936

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chung, Sanguoon San Diego, CA 5 208
Czaja, Stash Cardiff, CA 8 242
Li, Xiaojun Boynton Beach, FL 23 170

Cited Art Landscape

Patent Info (Count) # Cites Year
 
KABUSHIKI KAISHA TOSHIBA (1)
5,416,787 Method and apparatus for encoding and decoding convolutional codes 82 1992
 
MOTOROLA, INC. (1)
5,229,767 Decoder for convolutionally encoded information 19 1991
 
NEC CORPORATION (1)
5,161,194 Satellite communications system operating in asynchronous mode for central-to-terminal station transmission 42 1990
 
QUALCOMM INCORPORATED (1)
5,267,261 Mobile station assisted soft handoff in a CDMA cellular communications system 659 1992

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (6)
7,633,895 Orthogonal code division multiple access on return link of satellite links 2 2003
8,441,972 WCDMA device and method for discontinuous reception for power saving in idle mode and flexible monitoring of neighboring cells 0 2005
8,451,759 WCDMA device and method for discontinuous reception for power saving in idle mode and flexible monitoring of neighboring cells 0 2008
8,351,361 WCDMA device and method for discontinuous reception for power saving in idle mode and flexible monitoring of neighboring cells 0 2008
8,243,640 WCDMA device and method for discontinuous reception for power saving in idle mode and flexible monitoring of neighboring cells 3 2008
8,725,520 Power efficient batch-frame audio decoding apparatus, system and method 0 2008
 
RESEARCH IN MOTION LIMITED (3)
7,599,452 Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals 2 2002
7,587,005 Exploiting known padding data to improve block decode success rate 2 2006
8,457,255 Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals 0 2009
 
LG ELECTRONICS INC. (2)
6,973,062 Method for controlling call access of terminal in mobile communication system 59 1999
7,315,748 Method of informing uplink synchronization using downlink TPC bit patterns 1 2004
 
INTERDIGITAL TECHNOLOGY CORPORATION (1)
8,625,545 Synchronization for extending battery life 0 2011
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
8,204,929 Hiding sensitive information 1 2001
 
SAMSUNG ELECTRONICS CO., LTD. (1)
7,487,430 Apparatus and method for receiving packet data control channel in a mobile communication system 6 2003
 
SONY CORPORATION (1)
7,054,357 Error rate estimating device, method, and information recording medium 0 2000
 
VIA OPTICAL SOLUTIONS, INC. (1)
6,664,904 Method and device for recovering RLL constrained data to be decoded 3 2002

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