Multiple access coding for radio communications

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5353352
SERIAL NO

07866865

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Individual information signals encoded with a common block error-correction code are assigned a unique scrambling mask, or signature sequence, taken from a set of scrambling masks having selected correlation properties. The set of scrambling masks is selected such that the correlation between the modulo-2 sum of two masks with any codeword in the block code is a constant magnitude, independent of the mask set and the individual masks being compared. In one embodiment, when any two masks are summed using modulo-2 arithmetic, the Walsh transformation of that sum results in a maximally flat Walsh spectrum. For cellular radio telephone systems using subtractive CDMA demodulation techniques, a two-tier ciphering system ensures security at the cellular system level by using a pseudorandomly generated code key to select one of the scrambling masks common to all of the mobile stations in a particular cell. Also, privacy at the individual mobile subscriber level is ensured by using a pseudorandomly generated ciphering key to encipher individual information signals before the scrambling operation.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Ericsson GE Mobile Communications Inc.LYNCHBURG, VA129

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bottomley, Gregory E Cary, NC 129 3133
Dent, Paul W Stehag, SE 292 14211

Cited Art Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (5)
* 4901307 Spread spectrum multiple access communication system using satellite or terrestrial repeaters 1501 1986
* 5056109 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system 948 1989
* 5101501 Method and system for providing a soft handoff in communications in a CDMA cellular telephone system 842 1989
* 5109390 Diversity receiver in a CDMA cellular telephone system 808 1989
* 5103459 System and method for generating signal waveforms in a CDMA cellular telephone system 1675 1990
 
Other [Check patent profile for assignment information] (1)
* 4455662 Noise code generator and pulse compression communications system 11 1983
 
Hazeltine Corporation (1)
* 4644560 Intranetwork code division multiple access communication system 38 1985
 
AT&T LABS, INC. (1)
* 5136612 Method and apparatus for reducing effects of multiple access interference in a radio receiver in a code division multiple access communication system 105 1990
 
ASCOM ZELCOM AG, A CORP. OF SWITZERLAND (1)
* 4984247 Digital radio transmission system for a cellular network, using the spread spectrum method 240 1989
 
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) (2)
* 5048059 Log-polar signal processing 113 1989
* 5091942 Authentication system for digital cellular communications 200 1990
 
LMT RADIO PROFESSIONNELLE (1)
* 4933952 Asynchronous digital correlator and demodulators including a correlator of this type 133 1989
 
ERICSSON GE MOBILE COMMUNICATIONS HOLDING INC. (1)
* 5151919 CDMA subtractive demodulation 226 1990
 
The United States of America as represented by the Secretary of the Army (2)
* 4470138 Non-orthogonal mobile subscriber multiple access system 84 1982
* 4568915 Code generator for multilevel interleaved multiplexed noise codes 12 1983
 
ERICSSON INC. (1)
* 5060266 Continuous cipher synchronization for cellular communication system 63 1990
 
BELL TELEPHONE LABORATORIES, INCORPORATED (1)
* 5048057 Wireless local area network 67 1990
 
UNISYS CORPORATION (1)
* 5022049 Multiple access code acquisition system 93 1989
 
Agilis Corporation (1)
* 4930140 Code division multiplex system using selectable length spreading code sequences 103 1989
 
MOTOROLA, INC. (1)
* 5159608 Method and apparatus for using orthogonal coding in a communication system 79 1991
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2004/0038,682 Mobile assisted handover using CDMA 5 2003
 
UBINETICS (VPT) LIMITED (2)
* 7379610 Methods of, and apparatus for, producing code words 0 2001
* 2004/0071,357 Decoding of reed-muller codes 2 2003
 
TELEFONAKTIEBOLAGET LM ERICSSON (PBL) (1)
* 2008/0285,534 Different Orthogonal Code Sets with Members in Common 18 2005
 
GENERAL ATOMICS (2)
* 8149879 Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation 2 2008
* 2008/0130,685 Method and Apparatus for Data Transfer Using a Time Division Multiple Frequency Scheme Supplemented with Polarity Modulation 8 2008
 
SONY CORPORATION (3)
RE46541 Transmitter and transmitting method increasing the flexibility of code assignment 0 2013
RE46477 Transmitter and transmitting method increasing the flexibility of code assignment 0 2013
RE46327 Transmitter and transmitting method increasing the flexibility of code assignment 0 2013
 
SAMSUNG ELECTRONICS CO., LTD. (4)
6657985 Orthogonal code hopping multiple access communication system 9 1998
7221695 Method for communicating scrambling code ID in mobile communication system 12 2000
7869454 Method for communicating scrambling code ID in mobile communication system 2 2005
* 2005/0169,349 Method for communicating scrambling code ID in mobile communication system 13 2005
 
NOKIA TECHNOLOGIES OY (1)
9197304 Method and apparatus for conveying antenna configuration information via masking 0 2014
 
AGERE SYSTEMS LLC (1)
6452958 Digital modulation system using extended code set 40 1998
 
InterDigital Technology Corporation (56)
* 5841768 Method of controlling initial power ramp-up in CDMA systems by using short codes 110 1996
* 5748687 Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems 39 1996
6181949 Method of controlling initial power ramp-up in CDMA systems by using short codes 24 1998
6252866 Virtual locating of a fixed subscriber unit to reduce re-acquisition time 10 1999
RE38523 Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems 37 2000
6831905 Spread spectrum system assigning information signals to message-code signals 26 2000
6801516 Spread-spectrum system for assigning information signals having different data rates 35 2000
6493563 Method of controlling initial power ramp-up in CDMA systems by using short codes 18 2000
7072380 Apparatus for initial power control for spread-spectrum communications 31 2000
7020111 System for using rapid acquisition spreading codes for spread-spectrum communications 39 2000
6707805 Method for initial power control for spread-spectrum communications 23 2000
6985467 Rapid acquisition spreading codes for spread-spectrum communications 36 2001
6983009 Median weighted tracking for spread-spectrum communications 27 2001
6721301 Centroid tracking for spread-spectrum communications 29 2001
6697350 Adaptive vector correlator for spread-spectrum communications 35 2001
6456608 Adaptive vector correlator using weighting signals for spread-spectrum communications 83 2001
* 2002/0051,482 Median weighted tracking for spread-spectrum communications 29 2001
7929498 Adaptive forward power control and adaptive reverse power control for spread-spectrum communications 39 2001
6940840 Apparatus for adaptive reverse power control for spread-spectrum communications 43 2001
6816473 Method for adaptive forward power control for spread-spectrum communications 20 2001
6788662 Method for adaptive reverse power control for spread-spectrum communications 21 2001
* 2002/0027,946 Method for adaptive reverse power control for spread-spectrum communications 3 2001
7123600 Initial power control for spread-spectrum communications 28 2001
* 6873645 Automatic power control system for a code division multiple access (CDMA) communications system 13 2001
6980538 Virtual locating of a fixed subscriber unit to reduce reacquisition time 0 2001
* 2001/0026,540 Virtual locating of a fixed subscriber unit to reduce reacquisition time 1 2001
7502406 Automatic power control system for a code division multiple access (CDMA) communications system 12 2002
6879841 Method employed by a subscriber unit for controlling initial power ramp-up using short codes 14 2002
6577876 Base station for controlling initial power ramp-up using short codes 18 2002
6571105 Method employed by a base station for controlling initial power ramp-up using short codes 16 2002
6519474 Subscriber unit for controlling initial power ramp-up using short codes 13 2002
6507745 Apparatus for controlling initial power ramp-up in a CDMA system by using short codes 16 2002
6490462 Method of controlling initial power ramp-up in a CDMA system by using short codes 18 2002
6904294 Subscriber unit for controlling initial power ramp-up using short codes 19 2002
6778840 Method of controlling initial power ramp-up in a CDMA system by using short codes 15 2002
6606503 Apparatus for controlling initial power ramp-up in a CDMA system by using short codes 19 2002
* 2002/0186,669 Subscriber unit for controlling initial power ramp-up using short codes 0 2002
7085583 Communication unit for access 13 2003
6839567 Method employed by a base station for controlling initial power ramp-up using short codes 17 2003
* 2003/0190,925 Base station for controlling initial power ramp-up using short codes 2 2003
7756190 Transferring voice and non-voice data 3 2003
7593453 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system 6 2004
7903613 Code division multiple access (CDMA) communication system 10 2004
7117004 Method and subscriber unit for performing an access procedure 16 2004
* 2004/0242,259 Method employed by a base station for controlling initial power ramp-up using short codes 0 2004
7535874 Method and apparatus for adaptive power control for spread-spectrum communications 29 2004
7218625 Initial power control for spread-spectrum communications 0 2004
8009636 Method and apparatus for performing an access procedure 3 2005
7286847 Method and apparatus for performing an access procedure 12 2005
7190966 Method and apparatus for performing an access procedure 13 2005
7706332 Method and subscriber unit for performing power control 12 2005
7873328 Subscriber unit for performing an access procedure 2 2008
7706830 Method and subscriber unit for performing an access procedure 5 2008
9564963 Automatic power control system for a code division multiple access (CDMA) communications system 0 2008
8737363 Code division multiple access (CDMA) communication system 4 2011
9634801 User equipment identification specific scrambling 0 2011
 
MICRILOR, INC. (1)
6473449 High-data-rate wireless local-area network 118 2000
 
InterDigital Communications Corporation (1)
7437177 Method employed by a base station for controlling initial power ramp-up using short codes 29 2008
 
WSOU INVESTMENTS, LLC (1)
8514818 System and methods for generating masking sequences 0 2008
 
APPLE INC. (1)
* 7649994 System and method for decoding CDMA quality channel 0 2003
 
SEAGATE TECHNOLOGY LLC (5)
* 5717535 Block address integrity check for storage medium 14 1995
* 5936558 Signal space detector for channels utilizing a code having time varying constraints 9 1998
6212661 Static viterbi detector for channels utilizing a code having time varying constraints 12 1998
* 6404573 Full and half-rate signal space detection for channels with a time-varying MTR 1 1998
6493162 Frame synchronization for viterbi detector 62 1998
 
CALLAHAN CELLULAR L.L.C. (17)
7162454 System and method for reallocating and/or upgrading and/or selling tickets, other even admittance means, goods and/or services 94 2003
7216109 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 185 2003
7280975 System and method for determining and/or transmitting and/or establishing communication with a mobile device user for providing, for example, concessions, tournaments, competitions, matching, reallocating, upgrading, selling tickets, other event admittance means, goods and/or services 125 2005
7203665 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 30 2006
* 2006/0173,781 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 39 2006
7343350 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 13 2006
7379891 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 16 2006
7415424 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 47 2006
7386517 System and method for determining and/or transmitting and/or establishing communication with a mobile device user for providing, for example, concessions, tournaments, competitions, matching, reallocating, upgrading, selling tickets, other event admittance means, goods and/or services 68 2006
7617159 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 9 2007
7577619 System method reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 7 2007
7577620 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 35 2007
7565328 System and method for determining and/or transmitting and/or establishing communication with a mobile device user for providing, for example, concessions, tournaments, competitions, matching, reallocating, upgrading, selling tickets, and other event admittance means, goods and/or services 18 2007
7529713 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 11 2008
7562028 System and method for determining and/or transmitting and/or establishing communication with a mobile device user for providing, for example, concessions, tournaments, competitions, matching, reallocating, upgrading, selling tickets, and other event admittance mean 16 2008
7562051 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 24 2008
7577575 System method reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 14 2008
 
INTELLECTUAL VENTURES I LLC (1)
RE40231 High data spread spectrum transceiver and associated methods 9 2001
 
MCGILL UNIVERSITY (1)
* 5870414 Method and apparatus for encoding and decoding digital signals 23 1996
 
UNWIRED PLANET, LLC (5)
* 5831977 Subtractive CDMA system with simultaneous subtraction in code space and direction-of-arrival space 39 1996
6542484 Code allocation for radiocommunication systems 23 1998
* 6275966 Error detection for radio transmission including logically combined pseudo-random numbers and related transmitters, receivers, and methods 6 1998
6526091 Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties 71 1998
6944206 Rate one coding and decoding methods and systems 14 2000
 
UNWIRED PLANET, INC. (1)
6724813 Implicit resource allocation in a communication system 70 1998
 
TIME DOMAIN CORPORATION (1)
* 6912240 Method and apparatus for generating a large number of codes having desirable correlation properties 71 2001
 
EASTERN IX GROUP LLC (1)
7031945 System and method for reallocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 170 2001
 
KABUSHIKI KAISHA TOSHIBA (3)
* 2007/0140,478 Encryption apparatus and encryption method 15 2006
* 8483187 Wireless communication system and wireless communication method 0 2011
* 2011/0188,479 WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 0 2011
 
Wireless Logic, Inc. (1)
* 5825812 Suppressed side lobe direct-sequence-spread-spectrum radio communication method and device 7 1996
 
GOOGLE TECHNOLOGY HOLDINGS LLC (16)
* 7075885 Method for assigning variable-length walsh codes for code division multiple access communications systems 2 2001
* 2003/0103,447 Method for assigning variable-length walsh codes for code division multiple access communications systems 2 2001
* 7983143 Method and apparatus for initial acquisition and cell search for an OFDMA system 10 2006
7911935 Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 12 2006
* 7706249 Method and apparatus for a synchronization channel in an OFDMA system 25 2006
* 2007/0183,391 Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 34 2006
* 2007/0183,307 Method and apparatus for initial acquisition and cell search for an OFDMA system 12 2006
* 2007/0183,306 Method and apparatus for a synchronization channel in an OFDMA system 42 2006
* 9397799 Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 0 2011
* 2011/0211,542 METHOD AND APPARATUS FOR INTERLEAVING SEQUENCE ELEMENTS OF AN OFDMA SYNCRHONIZATION CHANNEL 2 2011
* 8767525 Method and apparatus for initial acquisition and cell search for an OFDMA system 2 2011
* 2011/0268,079 METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM 3 2011
* 2011/0268,104 METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM 7 2011
8780690 Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 7 2012
* 2013/0294,343 METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM 3 2013
9813200 Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 0 2016
 
RAYTHEON COMPANY (2)
7948332 N-channel multiplexer 0 2008
* 2010/0079,220 N-Channel Multiplexer 2 2008
 
LG ELECTRONICS INC. (1)
* 7123579 Method of transmitting non-orthogonal physical channels in the communications system 17 2000
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (6)
6404732 Digital modulation system using modified orthogonal codes to reduce autocorrelation 31 1998
7079567 Digital modulation system using extended code set 14 2002
7583582 M-ary orthogonal keying system 5 2006
* 2006/0250,942 Digital modulation system using modified orthogonal codes to reduce autocorrelation 3 2006
* 2009/0135,804 Method And System For Ordering Sequences For Synchronization Signaling In A Wireless System 10 2008
* 2011/0182,170 Digital Modulation System Using Modified Orthogonal Codes To Reduce Autocorrelation 0 2011
 
QUALCOMM INCORPORATED (9)
* 5471497 Method and apparatus for variable rate signal transmission in a spread spectrum communication system using coset coding 98 1993
* 6798736 Method and apparatus for transmitting and receiving variable rate data 77 1998
7315531 Method and apparatus for transmitting and receiving variable rate data 6 2004
* 2004/0218,570 Method and apparatus for transmitting and receiving variable rate data 6 2004
8169890 Systems and method for high data rate ultra wideband communication 1 2006
7961592 Method and apparatus for transmitting and receiving variable rate data 0 2007
* 2008/0080,363 METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING VARIABLE RATE DATA 22 2007
* 8576893 Systems and methods for high data rate ultra wideband communication 0 2009
* 2010/0027,587 SYSTEMS AND METHODS FOR HIGH DATA RATE ULTRA WIDEBAND COMMUNICATION 0 2009
 
SHARP KABUSHIKI KAISHA (1)
8619901 Systems and methods for providing unequal message protection 0 2008
 
PATTON ENTERPRISES, INC. (1)
* 6031913 Apparatus and method for secure communication based on channel characteristics 27 1998
 
VERIZON PATENT AND LICENSING INC. (2)
* 6151491 Mobile voice message/electronic mail system 103 1997
* 6167253 Mobile data/message/electronic mail download system utilizing network-centric protocol such as Java 299 1997
 
CDC PROPRIETE INTELLECTUELLE (1)
* 7043022 Packet order determining method and apparatus 7 1999
 
LSI CORPORATION (1)
8514690 M-ary orthogonal keying system 0 2011
 
NOVOWAVE, INC. (1)
* 2007/0115,869 SYSTEMS AND METHOD FOR HIGH DATA RATE ULTRA WIDEBAND COMMUNICATION 1 2006
 
INTRASONICS LIMITED (1)
* 2010/0240,297 COMMUNICATION SYSTEM 6 2010
 
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) (7)
* 7212820 Mobile assisted handover using CDMA 11 1995
* 5768307 Coherent demodulation with decision-directed channel estimation for digital communication 51 1996
* 6091761 Despreading method and arrangement in communication system 13 1998
7248874 Mobile assisted handover using CDMA 2 2003
8526482 Non-contiguous variable length orthogonal codes 1 2005
8004959 Different orthogonal code sets with members in common 3 2005
* 2007/0248,148 Non-Contiguous Variable Length Orthogonal Codes 4 2005
 
INTRASONICS S.A.R.L. (9)
7505823 Acoustic communication system 13 2000
7796978 Communication system for receiving and transmitting data using an acoustic data channel 24 2001
7460991 System and method for shaping a data signal for embedding within an audio signal 22 2001
* 2005/0219,068 Acoustic communication system 27 2001
8248528 Captioning system 3 2002
* 7796676 Signalling system 3 2004
* 2005/0053,122 Signalling system 7 2004
8185100 Communication system 5 2010
8560913 Data embedding system 1 2011
 
Ericsson GE Mobile Communications Inc. (2)
* 5572552 Method and system for demodulation of downlink CDMA signals 81 1994
* 5550809 Multiple access coding using bent sequences for mobile radio communications 77 1994
 
UTSTARCOM KOREA LIMITED (C/O OF UTSTARCOM, INC.) (1)
* 5703886 Error detecting apparatus for packet exchange 2 1996
 
ERICSSON INC. (12)
* 5812955 Base station which relays cellular verification signals via a telephone wire network to verify a cellular radio telephone 60 1994
* 5604806 Apparatus and method for secure radio communication 37 1995
* 5909460 Efficient apparatus for simultaneous modulation and digital beamforming for an antenna array 174 1995
* 5862173 Re-orthogonalization of wideband CDMA signals 11 1995
* 5894473 Multiple access communications system and method using code and time division 207 1996
* 5742678 Multiple access coding for radio communications 29 1996
* 5745578 Apparatus and method for secure communication based on channel characteristics 18 1996
* 5771288 Multiple access coding for radio communications 37 1997
* 6215762 Communication system and method with orthogonal block encoding 35 1997
6256514 Secure radio personal communications system and method 9 1998
6404821 Digital beamformer for receiving a first number of information signals using a second number of antenna array elements 15 1999
6219375 Apparatus for performing multiplication of a vector of multi-bit values by a matrix of multi-bit coefficients 5 1999
 
Technology Service Corporation (1)
* 8928524 Method and system for enhancing data rates 0 2013
 
SCC COMMUNICATIONS CORP. (1)
* 7106690 Method for generating and transmitting optimal cell ID codes 4 2000
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 6628667 Variable rate transmitting method and apparatus using bi-orthogonal functions for variable rate transmission rates above a predetermined value 62 1999
 
TEXAS INSTRUMENTS INCORPORATED (1)
* 7173919 Random access preamble coding for initiation of wireless mobile communications sessions 13 2000
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 6487237 Spreading code estimating apparatus and spreading code estimating method 4 1999
 
NVERA HOLDINGS, INC. (1)
* 5717824 Adaptive speech coder having code excited linear predictor with multiple codebook searches 30 1993
 
NORTEL NETWORKS LIMITED (1)
* 6198719 Bi-orthogonal code division multiple access system 34 1998
* Cited By Examiner