US Patent No: 5,265,119

Number of patents in Portfolio can not be more than 2000

Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system

Stats

ATTORNEY / AGENT: (SPONSORED)
 

Importance

Loading Importance Indicators... loading....

Abstract

A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control system controls transmission signal power for each cellular mobile telephone in the cellular mobile telephone system wherein each cellular mobile telephone has an antenna, transmitter and receiver and each cell-site also has an antenna, transmitter and receiver. Cell-site transmitted signal power is measured as received at the mobile unit. Transmitter power is adjusted at the mobile unit in an opposite manner with respect to increases and decreases in received signal power. A power control feedback scheme may also be utilized. At the cell-site communicating with the mobile unit, the mobile unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the mobile unit for further adjusting mobile unit transmitter power corresponding to deviations in the cell site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power so that mobile unit transmitted signals arrive at the cell-site at a desired power level. In a cell diversity situation, the mobile units transmitter power is adjusted to prevent unnecessary increases in mobile unit transmitter power level.

Loading the Abstract Image... loading....

First Claim

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA7516

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blakeney, II Robert D Steamboat Springs, CO 14 2014
Gilhousen, Klein S Bozeman, MT 82 11537
Padovani, Roberto San Diego, CA 140 9367
Weaver, Jr Lindsay A Boulder, CO 56 8135
Wheatley, III Charles E Del Mar, CA 80 7765

Cited Art

Patent Info (Count) # Cites Year
 
PURDUE RESEARCH FOUNDATION (2)
4,193,031 Method of signal transmission and reception utilizing wideband signals 69 1978
4,222,115 Spread spectrum apparatus for cellular mobile communication systems 299 1978
 
QUALCOMM INCORPORATED (2)
4,901,307 Spread spectrum multiple access communication system using satellite or terrestrial repeaters 1326 1986
5,056,109 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system 809 1989
 
U.S. PHILIPS CORPORATION (2)
4,777,653 Apparatus for controlling transmission power over a digital radio communication channel 138 1986
4,765,753 Method and apparatus for handing-over a radio connection from one radio cell to another radio cell of a digital radio transmission system 270 1987
 
AT&T COMPANY AND AT&T BELL LABORATORIES (1)
4,672,658 Spread spectrum wireless PBX 303 1986
 
BELL TELEPHONE LABORATORIES, INCORPORATED (1)
4,495,648 Transmitter power control circuit 112 1982
 
CANON KABUSHIKI KAISHA (1)
4,870,698 Output power control circuit for a mobile radio apparatus 86 1987
 
HARRIS CORPORATION (1)
4,225,976 Pre-calibration of gain control circuit in spread-spectrum demodulator 52 1978
 
INTERDIGITAL TECHNOLOGY CORPORATION (1)
5,093,840 Adaptive power control for a spread spectrum transmitter 191 1990
 
LUCENT TECHNOLOGIES INC. (1)
4,613,990 Radiotelephone transmission power control 253 1984
 
MOTOROLA, INC. (1)
5,107,487 Power control of a direct sequence CDMA radio 59 1991
 
NEC CORPORATION (1)
4,641,322 System for carrying out spread spectrum communication through an electric power line 132 1984
 
RACAL-SES LIMITED (1)
4,580,262 Radio systems 69 1983
 
TERRA MARINE ENGINEERING, INC. (1)
4,868,795 Power leveling telemetry system 120 1987
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
4,811,421 Transmission power control device in a radio communication transmitting/receiving station 189 1987

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (84)
5,396,516 Method and system for the dynamic modification of control paremeters in a transmitter power control system 214 1993
5,640,414 Mobile station assisted soft handoff in a CDMA cellular communications system 275 1994
5,461,639 Fast forward link power control in a code division multiple access system 128 1994
5,577,022 Pilot signal searching technique for a cellular communications system 131 1994
5,625,876 Method and apparatus for performing handoff between sectors of a common base station 120 1995
5,715,526 Apparatus and method for controlling transmission power in a cellular communications system 72 1995
5,907,813 Signal acquisition in a wireless communication system by transmitting repeated access probes from a terminal to a hub 22 1995
5,867,763 Method and apparatus for integration of a wireless communication system with a cable T.V. system 30 1996
5,839,052 Method and apparatus for integration of a wireless communication system with a cable television system 37 1996
5,898,920 Data communication using a dual mode radiotelephone 5 1996
5,881,368 Method and apparatus of power control in a CDMA dispatch system 90 1996
5,923,705 UART based autobauding without data loss 29 1996
5,790,589 System and method for rapidly reacquiring a pilot channel 42 1996
5,933,787 Method and apparatus for performing handoff between sectors of a common base station 63 1996
6,151,502 Method and apparatus for performing soft hand-off in a wireless communication system 80 1997
5,933,781 Pilot based, reversed channel power control 64 1997
5,987,326 Transmit power reduction for a high speed CDMA link in soft handoff 70 1997
6,396,867 Method and apparatus for forward link power control 56 1997
6,002,933 Inter-system soft handoff 25 1997
6,999,766 Method and apparatus for optimization of a cellular network 8 1997
5,982,760 Method and apparatus for power adaptation control in closed-loop communications 130 1997
6,426,960 Increased capacity data transmission in a CDMA wireless communication system 37 1997
6,055,428 Method and apparatus for performing soft hand-off in a wireless communication system 40 1997
6,188,678 Method and apparatus for adaptive closed loop power control using open loop measurements 57 1997
6,147,981 Method and apparatus for predictive parameter control with loop delay 29 1997
6,070,085 Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers 23 1997
6,307,849 Method and system for changing forward traffic channel power allocation during soft handoff 68 1997
6,215,777 Method and apparatus for transmitting and receiving data multiplexed onto multiple code channels, frequencies and base stations 32 1997
6,101,179 Accurate open loop power control in a code division multiple access communication system 100 1997
6,252,865 Methods and apparatuses for fast power control of signals transmitted on a multiple access channel 41 1998
6,603,745 Method and apparatus for reverse link overload detection 22 1998
6,208,873 Method and apparatus for transmitting reverse link power control signals based on the probability that the power control command is in error 37 1998
6,690,938 System and method for reducing dropped calls in a wireless communications network 22 1999
6,351,460 Method and apparatus for a dedicated control channel in an early soft handoff in a code division multiple access communication system 15 1999
6,442,398 Method and apparatus for reverse link loading estimation 14 1999
6,269,250 Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers 9 2000
6,272,322 Real-time transceiver gain and path loss calibration for wireless systems 7 2000
6,876,866 Multi-state power control mechanism for a wireless communication system 11 2000
7,590,095 Method and apparatus for power control of multiple channels in a wireless communication system 12 2001
7,126,930 Method and apparatus for transmitting messages in a wireless communication system 15 2001
6,996,069 Method and apparatus for controlling transmit power of multiple channels in a CDMA communication system 22 2001
6,763,244 Method and apparatus for adjusting power control setpoint in a wireless communication system 34 2001
6,594,500 Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers 39 2001
7,047,016 Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system 32 2001
6,662,024 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 51 2001
7,688,899 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 1 2001
7,072,413 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 79 2001
7,009,953 Method and system for changing forward traffic channel power allocation during soft handoff 9 2001
7,027,523 Method and apparatus for transmitting data in a time division duplexed (TDD) communication system 33 2001
6,751,187 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission 97 2001
6,983,166 Power control for a channel with multiple formats in a communication system 26 2001
7,006,848 Method and apparatus for utilizing channel state information in a wireless communication system 52 2001
7,164,649 Adaptive rate control for OFDM communication system 47 2001
6,714,512 Method and apparatus for a dedicated control channel in an early soft handoff in a code division multiple access communication system 4 2001
6,757,320 Method and apparatus for forward link power control 14 2002
RE39177 Method and apparatus for performing soft hand-off in a wireless communication system 7 2002
7,437,172 Discontinuous transmission (DTX) detection in wireless communication systems 5 2002
7,493,132 System and method for uplink rate selection 6 2003
7,440,426 Method and apparatus for reverse link overload detection 0 2003
8,427,936 Multiple-access hybrid OFDM-CDMA system 0 2003
7,248,879 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 19 2003
7,626,922 Method and apparatus for a dedicated control channel in an early soft handoff in a code division multiple access communication system 0 2004
7,590,182 Method and apparatus for utilizing channel state information in a wireless communication system 2 2004
7,680,174 Method and apparatus for forward link power control 1 2004
7,643,842 Method and apparatus for adjusting power control setpoint in a wireless communication system 1 2004
7,411,929 Method and apparatus for utilizing channel state information in a wireless communication system 3 2004
7,929,480 Quality indicator bit (QIB) generation in wireless communication systems 1 2004
7,936,690 Method and apparatus for controlling transmit power of multiple channels in a CDMA communication system 1 2005
8,094,625 Resource allocation for MIMO-OFDM communication systems 1 2005
7,376,438 Power control for a channel with multiple formats in a communication system 7 2005
7,333,560 Method and apparatus for transmitting data in a time division duplexed (TDD) communication system 2 2006
7,636,573 Multiple-access multiple-input multiple-output (MIMO) communication system 23 2006
7,649,954 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 2 2006
7,764,594 Multiple-access hybrid OFDM-CDMA system 4 2006
7,583,756 Adaptive pilot filter for a wireless communication system 1 2007
7,907,972 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 0 2007
8,406,802 Methods and apparatuses for fast power control of signals transmitted on a multiple access channel 0 2007
7,729,444 Method and apparatus for transmitting data in a time division duplexed (TDD) communication system 0 2007
8,023,988 Power control for a channel with multiple formats in a communication system 1 2008
7,809,044 Method and apparatus for forward link power control 0 2008
8,040,965 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 0 2009
8,406,200 Resource allocation for MIMO-OFDM communication systems 0 2009
8,121,217 Method and apparatus for transmitting data in a time division duplexed (TDD) communication system 0 2009
7,949,060 Method and apparatus for utilizing channel state information in a wireless communication system 0 2009
 
INTERDIGITAL TECHNOLOGY CORPORATION (77)
5,410,568 CDMA/TDMA spread-spectrum communications system and method 124 1993
5,610,906 Spread-spectrum changeable base station 7 1994
RE35402 CDMA/TDMA spread-spectrum communications system and method 9 1994
5,631,921 Adaptive power control for a spread spectrum communications system and method 40 1995
5,940,382 Virtual locating of a fixed subscriber unit to reduce re-acquisition time 49 1996
5,841,768 Method of controlling initial power ramp-up in CDMA systems by using short codes 86 1996
5,799,010 Code division multiple access (CDMA) communication system 152 1996
5,796,776 Code sequence generator in a CDMA modem 85 1996
5,842,114 Global channel power control to minimize spillover in a wireless communication environment 27 1997
5,926,465 Spread-spectrum changeable base station 13 1997
6,049,535 Code division multiple access (CDMA) communication system 90 1997
6,215,778 Bearer channel modification system for a code division multiple access (CDMA) communication system 75 1997
6,212,174 Capacity management method for a code division multiple access (CDM) communication system 39 1997
6,181,949 Method of controlling initial power ramp-up in CDMA systems by using short codes 21 1998
6,272,168 Code sequence generator in a CDMA modem 104 1998
6,295,288 Spread-spectrum changeable base station 2 1998
6,226,316 Spread spectrum adaptive power control communications system and method 29 1998
6,181,919 Global channel power control to minimize spillover in a wireless communication environment 8 1998
6,381,264 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system 21 1999
6,252,866 Virtual locating of a fixed subscriber unit to reduce re-acquisition time 8 1999
6,885,652 Code division multiple access (CDMA) communication system 50 1999
6,157,619 Code division multiple access (CDMA) communication system 78 1999
6,229,843 Pilot adaptive vector correlator 38 1999
6,831,905 Spread spectrum system assigning information signals to message-code signals 19 2000
6,801,516 Spread-spectrum system for assigning information signals having different data rates 21 2000
6,341,215 Global channel power control to minimize spillover in a wireless communication environment 3 2000
6,493,563 Method of controlling initial power ramp-up in CDMA systems by using short codes 16 2000
7,072,380 Apparatus for initial power control for spread-spectrum communications 23 2000
7,020,111 System for using rapid acquisition spreading codes for spread-spectrum communications 25 2000
6,707,805 Method for initial power control for spread-spectrum communications 20 2000
6,985,467 Rapid acquisition spreading codes for spread-spectrum communications 29 2001
6,983,009 Median weighted tracking for spread-spectrum communications 21 2001
6,721,301 Centroid tracking for spread-spectrum communications 26 2001
6,697,350 Adaptive vector correlator for spread-spectrum communications 28 2001
6,456,608 Adaptive vector correlator using weighting signals for spread-spectrum communications 55 2001
7,929,498 Adaptive forward power control and adaptive reverse power control for spread-spectrum communications 21 2001
6,940,840 Apparatus for adaptive reverse power control for spread-spectrum communications 28 2001
6,816,473 Method for adaptive forward power control for spread-spectrum communications 16 2001
6,788,662 Method for adaptive reverse power control for spread-spectrum communications 17 2001
7,123,600 Initial power control for spread-spectrum communications 22 2001
6,873,645 Automatic power control system for a code division multiple access (CDMA) communications system 11 2001
6,633,600 Traffic lights in a code division multiple access (CDMA) modem 14 2001
6,873,643 Spread spectrum adaptive power control communications system and method 3 2001
6,980,538 Virtual locating of a fixed subscriber unit to reduce reacquisition time 0 2001
6,360,079 Global channel power control to minimize spillover in a wireless communication environment 2 2001
6,456,828 Base station using global channel power control 0 2001
7,054,278 Spread-spectrum changeable base station 1 2001
6,744,809 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system 8 2002
7,502,406 Automatic power control system for a code division multiple access (CDMA) communications system 6 2002
6,674,788 Automatic power control system for a code division multiple access (CDMA) communications system 17 2002
6,879,841 Method employed by a subscriber unit for controlling initial power ramp-up using short codes 12 2002
6,577,876 Base station for controlling initial power ramp-up using short codes 16 2002
6,571,105 Method employed by a base station for controlling initial power ramp-up using short codes 14 2002
6,519,474 Subscriber unit for controlling initial power ramp-up using short codes 11 2002
6,507,745 Apparatus for controlling initial power ramp-up in a CDMA system by using short codes 14 2002
6,490,462 Method of controlling initial power ramp-up in a CDMA system by using short codes 16 2002
6,542,719 Base station using global channel power control 0 2002
6,904,294 Subscriber unit for controlling initial power ramp-up using short codes 17 2002
6,778,840 Method of controlling initial power ramp-up in a CDMA system by using short codes 13 2002
6,606,503 Apparatus for controlling initial power ramp-up in a CDMA system by using short codes 17 2002
7,085,531 Base station using reference signal power control 1 2003
7,085,583 Communication unit for access 11 2003
6,839,567 Method employed by a base station for controlling initial power ramp-up using short codes 15 2003
7,756,190 Transferring voice and non-voice data 1 2003
7,593,453 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system 4 2004
7,835,308 Method implemented by a subscriber unit for selectively suppressing communications 0 2004
7,903,613 Code division multiple access (CDMA) communication system 2 2004
7,117,004 Method and subscriber unit for performing an access procedure 14 2004
7,535,874 Method and apparatus for adaptive power control for spread-spectrum communications 11 2004
7,218,625 Initial power control for spread-spectrum communications 0 2004
8,009,636 Method and apparatus for performing an access procedure 1 2005
7,286,847 Method and apparatus for performing an access procedure 9 2005
7,190,966 Method and apparatus for performing an access procedure 11 2005
7,706,332 Method and subscriber unit for performing power control 5 2005
7,564,808 Spread spectrum communication unit 0 2006
7,873,328 Subscriber unit for performing an access procedure 0 2008
7,706,830 Method and subscriber unit for performing an access procedure 3 2008
 
INTEL CORPORATION (44)
5,497,424 Spread spectrum wireless telephone system 80 1994
5,535,238 Spread spectrum adaptive power control communications system and method 36 1994
6,088,590 Method and system for mobile controlled handoff and link maintenance in spread spectrum communication 29 1994
5,648,982 Spread spectrum transmitter 42 1994
5,574,747 Spread spectrum adaptive power control system and method 42 1995
5,959,980 Timing adjustment control for efficient time division duplex communication 51 1995
5,689,502 Efficient frequency division duplex communication system with interleaved format and timing adjustment control 116 1995
5,832,028 Method and apparatus for coherent serial correlation of a spread spectrum signal 4 1995
5,818,820 Method and system for data link expansion or contraction using spread spectrum TDMA communication 115 1995
5,768,264 Time division multiple access base station supporting ISDN messages 10 1995
5,754,584 Non-coherent spread-spectrum continuous-phase modulation communication system 12 1995
5,754,585 Method and apparatus for serial noncoherent correlation of a spread spectrum signal 5 1995
5,692,007 Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation 12 1995
5,671,219 Communication protocol for spread spectrum communication 43 1995
5,648,955 Method for power control in a TDMA spread spectrum communication system 101 1995
5,629,956 Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal 12 1995
5,627,856 Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators 17 1995
5,610,940 Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal 46 1995
5,859,842 Antenna diversity techniques 24 1995
6,005,856 Communication protocol for spread spectrum wireless communication system 43 1996
6,161,013 Wireless communication system and method 63 1996
5,835,527 Spread spectrum adaptive power control system and method 18 1996
5,856,998 Method and apparatus for correlating a continuous phase modulated spread spectrum signal 8 1996
6,112,080 Wireless communication method and system 131 1996
6,094,421 Timing adjustment control for efficient time division duplex, frequency division duplex or hybrid time division duplex/frequency division duplex communication 127 1997
5,787,076 Multi-mode TDMA spread spectrum communication system 28 1997
5,920,590 Variable bandwidth spread spectrum device 8 1997
5,995,538 Spread spectrum multipath processor system and method 22 1997
6,115,412 Spread spectrum wireless telephone system 6 1997
5,881,100 Method and apparatus for coherent correlation of a spread spectrum signal 12 1997
6,421,368 Spread spectrum wireless communication system 1 1999
6,175,586 Adjusting a transmitter power level for a spread spectrum transmitter 40 1999
6,388,997 Timing adjustment control for efficient time division duplex communication 67 2000
6,330,272 Receiving a spread spectrum data signal using determined weights 3 2000
6,611,548 Multipath processor 8 2001
7,082,107 Power control in wireless communications based on estimations of packet error rate 19 2001
6,621,852 Spread spectrum wireless communication system 1 2001
6,721,350 Spread spectrum adaptive power control using a base station 4 2002
6,671,308 Spread spectrum adaptive power control 4 2002
6,947,469 Method and Apparatus for wireless spread spectrum communication with preamble processing period 5 2002
7,120,187 Spread spectrum wireless communication system 0 2003
7,697,643 Setting a transmission power level for a mobile unit 0 2004
7,961,822 Setting a transmission power level for a mobile unit 0 2010
8,340,228 Setting a transmission power level for a mobile unit 0 2011
 
THERMO FUNDING COMPANY LLC (31)
5,859,874 Multipath communication system optimizer 48 1994
5,619,525 Closed loop power control for low earth orbit satellite communications system 183 1995
5,802,445 Methods and apparatus for providing user RF exposure monitoring and control in a satellite communications system 21 1995
6,072,768 Automatic satellite/terrestrial mobile terminal roaming system and method 20 1996
6,587,687 Multiple satellite fade attenuation control system 23 1996
5,956,619 Satellite controlled power control for personal communication user terminals 48 1996
5,896,558 Interactive fixed and mobile satellite network 33 1996
5,875,180 Satellite telephone interference avoidance system 19 1997
5,918,157 Satellite communications system having distributed user assignment and resource assignment with terrestrial gateways 50 1997
6,097,752 Closed loop power control for low earth orbit satellite communications system 133 1997
5,884,142 Low earth orbit distributed gateway communication system 171 1997
6,021,309 Channel frequency allocation for multiple-satellite communication network 57 1997
6,081,710 Dynamic traffic allocation for power control in multiple satellite communication systems 5 1997
5,796,760 Multipath communication system optimizer 9 1997
6,101,385 Satellite communication service with non-congruent sub-beam coverage 153 1997
6,134,423 Satellite communications system having gateway-based user RF exposure monitoring and control 9 1997
6,128,487 Global mobile paging system 11 1998
6,418,147 Multiple vocoder mobile satellite telephone system 170 1998
6,233,463 Automatic satellite terrestrial mobile terminal roaming system and method 138 1998
6,160,994 Interactive fixed and mobile satellite network 166 1998
6,661,996 Satellite communication system providing multi-gateway diversity to a mobile user terminal 6 1998
6,272,325 Method and apparatus for considering user terminal transmitted power during operation in a plurality of different communication systems 21 1998
6,125,260 System for generating and using global radio frequency maps 49 1998
6,085,067 Satellite controlled power control for personal communication user terminals 28 1999
6,253,080 Low earth orbit distributed gateway communication system 121 1999
6,240,124 Closed loop power control for low earth orbit satellite communications system 162 1999
6,463,279 Channel frequency allocation for multiple-satellite communication network 24 1999
6,301,476 Satellite communication service with non-congruent sub-beam coverage 11 2000
6,567,645 Multiple satellite repeater management system using frame error rate for diversity selection 13 2000
6,272,339 Global mobile paging system 17 2000
6,735,440 Low earth orbit distributed gateway communication system 5 2001
 
MOTOROLA MOBILITY LLC (18)
5,594,946 Method and apparatus for mitigating interference produced by a communication unit in a communication system 62 1995
5,809,430 Method and apparatus for base selection in a communication system 47 1997
6,373,829 Method and apparatus for group calls in a wireless CDMA communication system using outbound traffic channels for individual group members 32 1998
6,181,685 Method and apparatus for group calls in a wireless CDMA communication system 10 1998
5,991,618 Method and system for estimating a communication mode quality in a wireless communications system 43 1998
5,991,285 Method and apparatus for communicating signals of various channel types in CDMA communication system 21 1998
6,119,010 Method and apparatus for adjusting channel powers in a wireless communication system based on a predicted mobile location 25 1998
6,519,239 Method and apparatus for providing dispatch service in a CDMA communication system 25 1999
6,671,515 Method and apparatus for selecting communication cells in a wireless communication system 1 2000
6,862,273 Method and apparatus for providing dispatch scan in a CDMA communication system 2 2001
6,928,063 Method and apparatus for providing a dispatch patch service in a CDMA communication system 0 2001
7,099,290 Method and apparatus for CDMA-dispatch soft handoff 1 2001
6,961,572 Method and apparatus for base-initiated, CDMA-dispatch soft handoff 4 2001
6,925,309 Method and apparatus for quickly establishing a CDMA dispatch call 1 2001
6,801,783 Base site and method for quickly establishing a CDMA dispatch call 1 2001
6,788,941 Method and apparatus for mobile-initiated, CDMA-dispatch soft handoff 4 2001
7,907,671 Method and system for scaling a multi-channel signal 0 2004
7,684,799 Method for data transfer with a mobile station while in discontinuous reception state 2 2006
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (11)
RE36017 Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system 2 1993
6,078,817 System and method of dynamically increasing the capacity of a code division multiple access radio telecommunications network 33 1997
5,933,777 System and method for allocating channel elements in a code division multiple access radio telecommunications network 46 1997
6,259,927 Transmit power control in a radio communication system 58 1997
RE36078 Handover method for mobile radio system 11 1997
RE36079 Handover method for mobile radio system 1 1997
6,167,240 System and method relating to cellular communication systems 17 1998
RE37685 Handover method for mobile radio system 1 1999
RE37787 Handover method for mobile radio system 2 1999
6,463,296 Power control in a CDMA mobile communications system 12 1999
6,678,509 Communication receiver having reduced dynamic range by reducing the fixed range of the amplifier and increasing the variable gain via a gain control circuit 4 2001
 
NTT DOCOMO, INC. (10)
5,590,409 Transmission power control method and a transmission power control apparatus 183 1995
5,623,486 Transmission power control method and apparatus for mobile communications using a CDMA (code division multiple access) system 37 1995
6,310,868 Signal transmission method, mobile station device, and base station device for CDMA mobile communication system 31 1998
6,999,427 CDMA reception apparatus and received signal power measuring apparatus in CDMA mobile communication system 5 2000
8,005,120 Base station apparatus of mobile communication system 0 2003
7,826,861 Base station apparatus of mobile communication system 0 2003
7,443,907 Base station apparatus of mobile communication system 2 2003
7,095,780 Base station apparatus of mobile communication system 3 2003
7,649,859 Channel identifier assigning method and mobile communications system 0 2005
7,672,357 Base station apparatus of mobile communication system 0 2006
 
PINE VALLEY INVESTMENTS, INC. (8)
6,859,098 Apparatus, methods and articles of manufacture for control in an electromagnetic processor 44 2003
7,221,915 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture 0 2003
7,151,913 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture 9 2003
7,254,195 Apparatus, methods and articles of manufacture for dynamic differential delay correction 1 2003
7,091,778 Adaptive wideband digital amplifier for linearly modulated signal amplification and transmission 2 2003
7,345,534 Efficient power amplification system 33 2005
7,392,021 Apparatus, system, and method for measuring power delivered to a load 0 2005
7,671,699 Coupler 1 2007
 
LUCENT TECHNOLOGIES INC. (7)
5,697,053 Method of power control and cell site selection 46 1994
5,727,033 Symbol error based power control for mobile telecommunication system 30 1994
5,608,780 Wireless communication system having base units which extracts channel and setup information from nearby base units 51 1995
5,732,328 Method for power control in wireless networks for communicating multiple information classes 49 1997
5,956,649 Method and apparatus for power control in wireless networks 19 1998
6,628,958 Method for adjusting the transmit power level during soft handoff in wireless communication systems 26 1999
6,873,845 Method of power control and cell site selection based upon path gain and interference level 2 2002
 
GOOGLE INC. (6)
5,719,898 Fuzzy-logic spread-spectrum adaptive power control 20 1995
5,864,578 Matched filter-based handoff method and apparatus 33 1996
5,963,583 Fuzzy-logic spread-spectrum adaptive power control 15 1998
6,215,811 Store and dump, spread-spectrum handoff 23 1998
6,324,207 Handoff with closed-loop power control 18 1999
7,020,184 Store and forward handoff 3 2001
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (6)
5,689,525 Direct-sequence spread-spectrum communication system 22 1995
5,903,596 Spread spectrum demodulation unit 10 1996
5,873,027 Mobile radio system with control over radio wave output if a malfunction is detected 7 1996
RE37870 CDMA/TDD radio communication system 2 1998
6,336,040 Mobile radio system with control over radio wave output if a malfunction is detected 4 1998
6,661,783 CDMA transmission apparatus 1 1999
 
XIRCOM WIRELESS, INC. (6)
5,802,046 Efficient time division duplex communication system with interleaved format and timing adjustment control 88 1995
5,745,484 Efficient communication system using time division multiplexing and timing adjustment control 116 1995
5,680,414 Synchronization apparatus and method for spread spectrum receiver 37 1995
5,659,574 Multi-bit correlation of continuous phase modulated signals 19 1995
6,522,642 Antenna diversity techniques 23 1998
6,366,566 Efficient communication system using time division multiplexing and timing adjustment control 16 1999
 
FIPA FROHWITTER INTELLECTUAL PROPERTY AG (5)
5,559,790 Spread spectrum communication system and transmission power control method therefor 117 1995
5,870,393 Spread spectrum communication system and transmission power control method therefor 85 1996
6,335,924 Spread spectrum communication system and transmission power control method therefor 13 1998
6,628,635 Spread spectrum communication system and transmission power control method therefor 2 2001
7,376,107 Spread spectrum communication system and transmission power control method therefor 0 2003
 
CANON KABUSHIKI KAISHA (4)
5,715,521 Method of controlling synchronization signal power in a communication system 28 1995
6,236,863 Comprehensive transmitter power control system for radio telephones 10 1998
6,185,431 Mobile station closed loop output power stability system for weak signal conditions 25 1998
6,418,321 Transmission power controller 4 1999
 
FUJITSU LIMITED (4)
5,487,180 Method of determining initial transmission power 86 1994
5,812,295 Optical subscriber transmission system and subscriber unit used in such 4 1994
5,768,694 Automatic gain control circuit with input and output signal detectors operating in equalized conditions 15 1995
7,336,751 Power control circuit and radio transmission apparatus 3 2002
 
GLOBALSTAR L.P. (3)
6,064,857 Dual mode satellite telephone with hybrid battery/capacitor power supply 13 1997
5,905,943 System for generating and using global radio frequency maps 12 1997
6,023,463 Satellite telephone interference avoidance system 31 1998
 
LG INFORMATION & COMMUNICATIONS, LTD. (3)
5,978,365 Communications system handoff operation combining turbo coding and soft handoff techniques 108 1998
6,151,328 Apparatus and method for controlling power in code division multiple access system 46 1998
6,094,427 Communications system handoff operation combining turbo coding and soft handoff techniques 69 1999
 
NEC CORPORATION (3)
5,852,782 Transmission power control method 25 1996
6,097,947 Method for detecting failure mobile station in cellular mobile communication network through transmission power control 13 1998
6,618,596 Communication system, apparatus, method, and recording medium for mobile communication 13 1999
 
NTT MOBILE COMMUNICATIONS NETWORK INC. (3)
5,487,083 Hand-off method and mobile station for spread spectrum mobile communication 34 1994
5,574,983 Base station device and mobile station device in mobile communication system utilizing the site diversity effect in soft handover state 84 1994
5,933,782 Downlink transmission power control scheme for mobile communication system using site diversity 40 1997
 
UNWIRED PLANET, LLC (3)
5,574,982 Method and apparatus for regulating a power level of a transmitted radio signal 39 1993
6,061,556 System and method for secondary traffic charging in a radio telecommunications network 16 1997
6,067,315 Method and apparatus for coherently-averaged power estimation 29 1997
 
XIRCOM II WIRELESS, INC. (3)
6,094,575 Communication system and method 91 1996
5,953,370 Apparatus for receiving and correlating a spread spectrum signal 13 1997
6,532,365 PCS pocket phone/microcell communication over-air protocol 28 2000
 
ALCATEL USA SOURCING, L.P. (2)
5,809,431 Local multipoint distribution system 83 1995
RE39677 Local multipoint distribution system 0 2000
 
NOKIA MOBILE PHONES LTD. (2)
5,548,616 Spread spectrum radiotelephone having adaptive transmitter gain control 83 1994
5,566,201 Digital AGC for a CDMA radiotelephone 47 1994
 
NOKIA TELECOMMUNICATIONS OY (2)
5,570,353 Method of transmitting and receiving power control messages in a CDMA cellular radio system 65 1995
6,167,257 Method for remotely changing the telecommunication settings of a subscriber station 6 1998
 
OKI ELECTRIC INDUSTRY CO., LTD. (2)
7,564,774 Communication network using code division multiplexing technology 1 2004
7,848,345 Communication network using code division multiplexing technology 0 2009
 
XIRCOM, INC. (2)
6,282,228 Spread spectrum codes for use in communication 17 1997
6,317,452 Method and apparatus for wireless spread spectrum communication with preamble sounding gap 38 1999
 
ALCATEL (1)
6,430,392 Dynamic compensation of signals for space telecommunication repeaters 1 1999
 
ALTRALIGHT, INC. (1)
5,991,332 Adaptive matched filter and vector correlator for a code division multiple access (CDMA) modem 63 1998
 
ANDREW CORPORATION (1)
6,424,643 Method of modeling a CDMA cellular telephone system 10 1999
 
AT&T WIRELESS SERVICES, INC. (1)
5,878,328 Method and apparatus for wireless communication system organization 52 1995
 
BROADCOM CORPORATION (1)
7,583,625 Access point multi-level transmission power and protocol control based on the exchange of characteristics 6 2006
 
CELSAT CORPORATION (1)
5,446,756 Integrated cellular communications system 314 1993
 
CHU, JEFFREY C. (1)
7,120,392 Uplink power control using loopback communications carriers 4 2003
 
COMCAST MO GROUP, INC. (1)
6,181,917 Method and system for designing a cellular communication system 7 1995
 
CORE WIRELESS LICENSING S.A.R.L (1)
5,564,074 Power control apparatus and method for a radiotelephone 56 1995
 
DATANG TELECOM TECHNOLOGY & INDUSTRY HOLDINGS CA, LTD (1)
6,980,527 Smart antenna CDMA wireless communication system 19 2000
 
ERICSSON INC. (1)
7,860,018 Thermal transmission control of wireless data modem 2 2004
 
HUGHES ELECTRONICS CORPORATION (1)
5,357,513 Transmission power level adjustment in radio telephony 50 1993
 
INTELLECTUAL VENTURES HOLDING 81 LLC (1)
8,009,639 Feedback control in an FDD TDD-CDMA system 0 2006
 
INTERDIGITAL COMMUNICATIONS CORPORATION (1)
7,437,177 Method employed by a base station for controlling initial power ramp-up using short codes 14 2008
 
M/S COM, INC. (1)
7,751,496 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture 2 2003
 
MOTOROLA, INC. (1)
5,790,533 Method and apparatus for adaptive RF power control of cable access units 44 1995
 
NORTEL NETWORKS LIMITED (1)
6,049,715 Method and apparatus for evaluating a received signal in a wireless communication utilizing long and short term values 53 1997
 
NORTHROP GRUMMAN SYSTEMS CORPORATION (1)
7,106,232 Analog multiplexer and variable gain amplifier for intermediate frequency applications 8 2002
 
NXP B.V. (1)
7,321,750 Communication system, device and method 1 2001
 
OMNIPOINT TECHNOLOGIES, INC. (1)
5,757,847 Method and apparatus for decoding a phase encoded signal 12 1995
 
PANASONIC CORPORATION (1)
7,778,224 CDMA/TDD mobile communication system and method 0 2004
 
RESEARCH IN MOTION LIMITED (1)
5,670,964 Navigation assistance for call handling in mobile telephone systems 33 1995
 
ROKE MANOR RESEARCH LIMITED (1)
5,430,889 Automatic power control system for a mobile radio system 16 1993
 
SENORA TRADING COMPANY (1)
6,366,572 Wireless communication system with symmetric communication protocol 26 1999
 
SHAN TECHNOLOGIES, LLC (1)
6,377,555 Method for determining forward link channel powers for a CDMA cellular or PCS system 11 1998
 
SIEMENS AKTIENGESELLSCHAFT (1)
6,278,742 Method and system for power-conserving interference avoidance in communication between a mobile unit and a base unit in a wireless telecommunication system 2 1999
 
SIEMENS INFORMATION AND COMMUNICATION MOBILE, LLC (1)
7,224,745 Method and system for power-conserving interference avoidance in communication between a mobile unit and a base unit in a wireless telecommunication system 1 2001
 
SIGTEK, INC. (1)
5,809,061 CDMA communication system with pilot tone control 19 1995
 
SKYWORKS SOLUTIONS, INC. (1)
6,256,476 Power management for a telephone system by dynamically adjusting transmission power 11 1998
 
SONY CORPORATION (1)
5,699,380 Spread spectrum communication terminal apparatus in CDMA cellular telephone system 14 1995
 
TYCO ELECTRONICS LOGISTICS AG (1)
5,623,484 Method and apparatus for controlling signal quality in a CDMA cellular telecommunications 52 1994
 
U.S. PHILIPS CORPORATION (1)
5,872,522 Selective call system 6 1995
 
WI-LAN INC. (1)
7,379,478 System and method for allocating power 3 2000
 
XIROM WIRELESS, INC. (1)
5,963,586 Method and apparatus for parallel noncoherent correlation of a spread spectrum signal 11 1995