Minimal maintenance link to support synchronization

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8175120
APP PUB NO 20010036200A1
SERIAL NO

09778474

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Multiple field units in a CDMA system are synchronized for communication with a base station using a shared forward and reverse link channel. Each field unit is assigned a time slot in a forward link channel to receive messages from the base station. Likewise, each field unit is assigned a time slot on a common reverse link channel for transmitting messages to the base station. Timing alignment among each of many field units and the base station is achieved by analyzing messages received at the base station in a corresponding time slot from each field unit. Thereafter, a message is transmitted in a corresponding time slot to a particular field unit from the base station for adjusting its timing so that future messages transmitted from the field unit are received in the appropriate time slot at the base station. In this way, minimal resources are deployed to maintain communication and precise synchronization between a base station and each of multiple users, minimizing collisions between field units transmitting in adjacent time slots on the reverse link.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTEL CORPORATIONSANTA CLARA, CA27951

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoffmann, John E Indialantic, US 67 1036
Nelson,, Jr G Rodney Merritt Island, US 4 3
Proctor,, Jr James A Indialantic, US 162 1373
Rouphael, Antoine J Escondido, US 64 921

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4675863 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels 329 1985
4912705 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels 225 1989
 
Multi-Tech Systems, Inc. (1)
5617423 Voice over data modem with selectable voice compression 169 1994
 
META WAVE COMMUNICATIONS CORPORATION (1)
6118767 Interference control for CDMA networks using a plurality of narrow antenna beams and an estimation of the number of users/remote signals present 129 1997
 
THOMSON-CSF (2)
5038149 Antenna with three-dimensional coverage and electronic scanning, of the random spare volume array type 42 1989
5430452 Device for supply to the radiating elements of an array antenna, and application thereof to an antenna of an MLS type landing system 29 1993
 
GENUITY SOLUTIONS INC. (1)
6104708 Wireless data communications system 58 1997
 
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (1)
5598416 Data communication system 54 1995
 
DSP GROUP, INC. (1)
6263013 Fast tracking of PN synchronization in a direct-sequence spread-spectrum digital communications system 42 1998
 
NEC CORPORATION (6)
5511068 Mobile communication system capable of transmitting and receiving a radio signal obtained by TDMA and CDMA without interference 75 1994
5592468 Wireless local area network system with improved transfer efficiency and data transfer method for same 69 1995
5963559 Radio transmission with a slow transmission mode used when retransmission of a data frame fails even repeated 39 1996
6002690 Time division multiplex transferring system capable of increasing transferring efficiency and preventing interruption of communication 54 1997
6088324 Prediction-based transmission power control in a mobile communications system 87 1997
7236467 CDMA communication system with pilot power control unit 21 2001
 
AT&T Bell Laboratories (1)
5115309 Method and apparatus for dynamic channel bandwidth allocation among multiple parallel video coders 260 1990
 
MORPHICS TECHNOLOGY, INC. (1)
6934319 Configurable multimode despreader for spread spectrum applications 31 2000
 
NOVATEL INC. (1)
5101416 Multi-channel digital receiver for global positioning system 144 1990
 
COREEL MICROSYSTEMS (1)
6198723 Asynchronous transfer mode traffic shapers 76 1998
 
RCA Corporation (1)
4577316 Synchronization system for a regenerative subtransponder satellite communication system 84 1984
 
IDTP HOLDINGS, INC. (1)
6868075 Method and apparatus for compressed mode communications over a radio interface 80 2000
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
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AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (1)
6111863 Method and apparatus for the dynamic allocation of signal bandwidth between audio, video and data signals 96 1995
 
QUALCOMM INCORPORATED (57)
5056109 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system 922 1989
5103459 System and method for generating signal waveforms in a CDMA cellular telephone system 1660 1990
5257283 Spread spectrum transmitter power control method and system 325 1991
5267262 Transmitter power control system 461 1991
5280472 CDMA microcellular telephone system and distributed antenna system therefor 519 1992
5437055 Antenna system for multipath diversity in an indoor microcellular communication system 128 1993
5414728 Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels 258 1993
5715236 System and method for generating signal waveforms in a CDMA cellular telephone system 109 1993
5621752 Adaptive sectorization in a spread spectrum communication system 171 1994
5604730 Remote transmitter power control in a contention based multiple access system 216 1994
5577022 Pilot signal searching technique for a cellular communications system 186 1994
5673259 Random access communications channel for data services 308 1995
5784406 Method and apparatus for objectively characterizing communications link quality 103 1995
5854786 Method and apparatus for distribution/consolidation (DISCO) interface units for packet switched interconnection system 63 1995
5581575 Method and apparatus for transmission of variable rate digital data 89 1995
5930230 High data rate CDMA wireless communication system 135 1996
5859840 Spread spectrum communication system which defines channel groups comprising selected channels that are additional to a primary channel and transmits group messages during call set up 118 1996
5881368 Method and apparatus of power control in a CDMA dispatch system 123 1996
5884196 Method and apparatus of preserving power of a remote unit in a dispatch system 151 1996
5926500 Reduced peak-to-average transmit power high data rate CDMA wireless communication system 88 1996
5781543 Power-efficient acquisition of a CDMA pilot signal 97 1996
5893035 Centralized forward link power control 108 1996
5960361 Method and apparatus for performing a fast downward move in a cellular telephone forward link power control system 101 1996
6075974 Method and apparatus for adjusting thresholds and measurements of received signals by anticipating power control commands yet to be executed 128 1996
5892774 Phase shift encoded subchannel 49 1996
5933781 Pilot based, reversed channel power control 81 1997
5991284 Subchannel control loop 77 1997
5867527 Method of searching for a bursty signal 71 1997
5914950 Method and apparatus for reverse link rate scheduling 271 1997
6069880 Method and apparatus for scanning other frequency pilot signals in a code division multiple access communication system 66 1997
5982760 Method and apparatus for power adaptation control in closed-loop communications 195 1997
6426960 Increased capacity data transmission in a CDMA wireless communication system 60 1997
6396804 High data rate CDMA wireless communication system 121 1997
6188678 Method and apparatus for adaptive closed loop power control using open loop measurements 89 1997
5923650 Method and apparatus for reverse link rate scheduling 289 1997
6097972 Method and apparatus for processing power control signals in CDMA mobile telephone system 87 1997
6377809 Channel structure for communication systems 187 1997
6389000 Method and apparatus for transmitting and receiving high speed data in a CDMA communication system using multiple carriers 103 1997
6101179 Accurate open loop power control in a code division multiple access communication system 138 1997
6005855 Method and apparatus for providing variable rate data in a communications system using statistical multiplexing 120 1997
* 6574211 Method and apparatus for high rate packet data transmission 509 1997
6064678 Method for assigning optimal packet lengths in a variable rate communication system 104 1997
6307840 Mobile station assisted timing synchronization in CDMA communication system 109 1998
6275478 Methods and apparatuses for fast power control of signals transmitted on a multiple access channel 60 1998
5949814 High-data-rate supplemental channel for CDMA telecommunications system 85 1998
6058338 Method and apparatus for efficient GPS assistance in a communication system 182 1999
6690938 System and method for reducing dropped calls in a wireless communications network 39 1999
6587446 Handoff in a wireless communication system 37 1999
6782277 Wireless communication system with base station beam sweeping 36 1999
6353412 Method and apparatus for determining position location using reduced number of GPS satellites and synchronized and unsynchronized base stations 120 1999
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6246673 Method and system for handoff between an asynchronous CDMA base station and a synchronous CDMA base station 127 2000
6501787 High-data-rate supplemental channel for CDMA telecommunications system 23 2000
7099629 Method and apparatus for adaptive transmission control in a high data rate communication system 54 2000
6963540 Apparatus and method for assigning a common packet channel in a CDMA communication system 93 2000
2003/0123,401 Reverse link power controlled repeater 83 2002
2005/0208,961 Method and apparatus for controlling transmit power of multiple channels in a CDMA communication system 107 2005
 
VERIZON PATENT AND LICENSING INC. (1)
5463629 Dynamic channel allocation method and system for integrated services digital network 119 1992
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (1)
5634199 Method of subspace beamforming using adaptive transmitting antennas with feedback 158 1995
 
ALCATEL-LUCENT USA INC. (1)
6038450 Soft handover system for a multiple sub-carrier communication system and method thereof 205 1997
 
ERICSSON GE MOBILE COMMUNICATIONS INC. (1)
5353332 Method and apparatus for communication control in a radiotelephone system 208 1992
 
ERICSSON INC. (5)
5790549 Subtractive multicarrier CDMA access methods and systems 64 1996
5844894 Time-reuse partitioning system and methods for cellular radio telephone systems 114 1996
5894473 Multiple access communications system and method using code and time division 201 1996
6628945 Apparatus and methods for high-penetration random access in wireless communications systems 32 1999
6768727 Fast forward link power control for CDMA system 82 2000
 
RESOUND CORPORATION (1)
5905473 Adjustable array antenna 92 1997
 
Ortho Pharmaceutical Corporation (1)
6001800 Spray dried erythropoietin 50 1998
 
ALCATEL N.V. (2)
5373502 Process, transmitter and receiver for data transmission with variable traffic volume and a control station for coordinating several such transmitters and receivers 217 1993
5606580 Method of adjusting the length of a data block in a time-division multiple access communication system 59 1994
 
RPX CORPORATION (1)
6269075 Finger assignment in a CDMA rake receiver 114 1998
 
FRANCE TELECOM (1)
6724743 Method of conjoint detection of a set of CDMA codes 34 2000
 
Tachyon, Inc. (1)
* 6735188 Channel encoding and decoding method and apparatus 83 1999
 
R.F. WAVES LTD. (1)
6535545 RF modem utilizing saw resonator and correlator and communications transceiver constructed therefrom 26 1999
 
ALCATEL (1)
6526064 Method for transmitting on a plurality of transmission media, with dynamic data dispatching, and corresponding transmitter and terminal 39 1998
 
DSC TELECOM L.P. (1)
6134233 Apparatus and method of frame aligning information in a wireless telecommunications system 58 1997
 
UNISYS CORPORATION (1)
5619492 CDMA communication system in which bit rates are dynamically allocated 94 1995
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
5559789 CDMA/TDD Radio Communication System 99 1995
6337668 Antenna apparatus 129 2000
 
AT&T CORP. (7)
5375124 Method and apparatus for providing ISDN access 123 1992
5442625 Code division multiple access system providing variable data rate access to a user 331 1994
5592470 Broadband wireless system and network architecture providing broadband/narrowband service with optimal static and dynamic bandwidth/channel allocation 510 1994
5856971 Code division multiple access system providing variable data rate access to a user 102 1995
6195362 Resource pooling system and method in communication systems 56 1996
6262980 Dynamic resource allocation method and apparatus for broadband services in a wireless communications system 124 1997
6940845 Asymmetric measurement-based dynamic packet assignment system and method for wireless data services 90 2001
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HYPRES, INC. (1)
9312895 Two stage radio frequency interference cancellation system and method 6 2015
 
IPR LICENSING, INC. (1)
* 2015/0257,097 CODED REVERSE LINK MESSAGES FOR CLOSED-LOOP POWER CONTROL OF FORWARD LINK CONTROL MESSAGES 1 2015
 
NTT DOCOMO, INC. (1)
* 2009/0168,748 MOBILE STATION, BASE STATION, INTER-USER UPLINK SYNCHRONIZATION METHOD 0 2007
 
Revo Labs, Inc. (1)
* 9144046 Systems and methods for synchronizing wireless audio base stations 0 2012
 
REVOLABS, INC. (1)
* 2013/0281,074 SYSTEMS AND METHODS FOR SYNCHRONIZING WIRELESS AUDIO BASE STATIONS 1 2012
* Cited By Examiner

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