US Patent No: 5,267,261

Number of patents in Portfolio can not be more than 2000

Mobile station assisted soft handoff in a CDMA cellular communications system

Stats

See full text
ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

In a code division multiple access (CDMA) spread spectrum cellular communication system in which a mobile station user communicates with another system user via at least one base station, wherein each base station transmits a common pilot signal of a different code phase with respect to other base stations in said system, a method for directing communications between said mobile station user and said base stations. The mobile station monitors the signal strength of pilots and reports the measured signal strength to a system controller via the base station through which it is communicating. Command messages from the system controller to a new base station and the mobiles station establishes communication through the new base station in addition to the communication through the current base station. When the mobile station detects the falling below a predetermined level of the signal strength of a pilot corresponding to at least one of the base stations through which the mobile station is communicating, the mobile station reports the measured signal strength indicative of the corresponding base station to the system controller via the base stations through which it is communicating. Command messages from the system controller to the identified base station and the mobiles station terminates communication through the corresponding base station while communications through the other base station or base stations continue.

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

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA10772

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blakeney, II Robert D Steamboat Springs, CO 14 2165
Karmi, Gadi San Diego, CA 66 2213
Tiedemann, Jr Edward G Concord, MA 188 7491
Weaver, Jr Lindsay A Boulder, CO 56 8644

Cited Art Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (3)
5,056,109 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system 838 1989
5,101,501 Method and system for providing a soft handoff in communications in a CDMA cellular telephone system 788 1989
5,109,390 Diversity receiver in a CDMA cellular telephone system 760 1989
 
MOTOROLA, INC. (2)
5,127,100 Digital radio communication system and two way radio 71 1989
5,054,110 Multi-site dispatching system cell registration 70 1989
 
Bell Telephone Laboratories, Incorporated (1)
4,475,010 High density cellular mobile radio communications 180 1983
 
INTERDIGITAL TECHNOLOGY CORPORATION (1)
5,179,571 Spread spectrum cellular handoff apparatus and method 164 1991
 
PURDUE RESEARCH FOUNDATION (1)
4,222,115 Spread spectrum apparatus for cellular mobile communication systems 302 1978

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (248)
5,490,165 Demodulation element assignment in a system capable of receiving multiple signals 240 1993
6,157,668 Method and apparatus for reducing the average transmit power of a base station 51 1994
5,758,266 Multiple frequency communication device 35 1994
5,697,055 Method and apparatus for handoff between different cellular communications systems 112 1994
5,577,022 Pilot signal searching technique for a cellular communications system 142 1994
5,602,833 Method and apparatus for using Walsh shift keying in a spread spectrum communication system 156 1994
5,691,974 Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy 179 1995
5,625,876 Method and apparatus for performing handoff between sectors of a common base station 139 1995
5,594,718 Method and apparatus for providing mobile unit assisted hard handoff from a CDMA communication system to an alternative access communication system 140 1995
5,608,722 Multi-user communication system architecture with distributed receivers 173 1995
5,680,395 Method and apparatus for time division duplex pilot signal generation 49 1995
6,108,364 Time division duplex repeater for use in a CDMA system 66 1995
5,907,813 Signal acquisition in a wireless communication system by transmitting repeated access probes from a terminal to a hub 23 1995
5,867,763 Method and apparatus for integration of a wireless communication system with a cable T.V. system 37 1996
5,839,052 Method and apparatus for integration of a wireless communication system with a cable television system 49 1996
5,978,679 Coexisting GSM and CDMA wireless telecommunications networks 69 1996
5,884,187 Method and apparatus for providing centralized power control administration for a set of base stations 122 1996
5,940,762 Inter-system calling supporting inter-system soft handoff 47 1996
5,926,470 Method and apparatus for providing diversity in hard handoff for a CDMA system 74 1996
5,917,811 Method and apparatus for measurement directed hard handoff in a CDMA system 58 1996
5,828,661 Method and apparatus for providing a cone of silence in a cellular communication system 53 1996
5,848,063 Method and apparatus for hard handoff in a CDMA system 78 1996
5,884,196 Method and apparatus of preserving power of a remote unit in a dispatch system 121 1996
5,881,368 Method and apparatus of power control in a CDMA dispatch system 96 1996
6,021,122 Method and apparatus for performing idle handoff in a multiple access communication system 39 1996
5,983,099 Method/apparatus for an accelerated response to resource allocation requests in a CDMA push-to-talk system using a CDMA interconnect subsystem to route calls 123 1996
5,722,053 Multiple frequency communication device 36 1996
5,937,019 Method and apparatus for reliable intersystem handoff in a CDMA system 49 1996
5,790,589 System and method for rapidly reacquiring a pilot channel 43 1996
5,757,767 Method and apparatus for joint transmission of multiple data signals in spread spectrum communication systems 102 1996
5,933,787 Method and apparatus for performing handoff between sectors of a common base station 69 1996
5,940,761 Method and apparatus for performing mobile assisted hard handoff between communication systems 38 1997
6,151,502 Method and apparatus for performing soft hand-off in a wireless communication system 86 1997
RE39381 Establishment of a connection between a base station and a mobile station using random access channels 13 1997
5,987,326 Transmit power reduction for a high speed CDMA link in soft handoff 71 1997
5,982,758 Method and apparatus for merging neighbor lists in a CDMA mobile telephone system 41 1997
6,002,933 Inter-system soft handoff 26 1997
6,999,766 Method and apparatus for optimization of a cellular network 12 1997
5,982,760 Method and apparatus for power adaptation control in closed-loop communications 145 1997
5,864,760 Method and apparatus for reducing the average transmit power from a sectorized base station 42 1997
6,055,428 Method and apparatus for performing soft hand-off in a wireless communication system 46 1997
6,185,199 Method and apparatus for data transmission using time gated frequency division duplexing 26 1997
5,953,320 Method and apparatus for constructing a temporary list of neighboring base stations in a wireless communication device 29 1997
6,201,802 Method and apparatus for analyzing base station timing 21 1997
6,307,849 Method and system for changing forward traffic channel power allocation during soft handoff 73 1997
6,215,777 Method and apparatus for transmitting and receiving data multiplexed onto multiple code channels, frequencies and base stations 34 1997
6,377,809 Channel structure for communication systems 118 1997
6,198,928 Handover method, and a cellular radio system 9 1998
6,201,954 Method and system for providing an estimate of the signal strength of a received signal 39 1998
6,216,004 Cellular communication system with common channel soft handoff and associated method 119 1998
6,510,172 Multi-user communication system architecture with distributed transmitters 32 1998
6,360,100 Method for robust handoff in wireless communication system 21 1998
6,178,164 Method and apparatus for performing idle handoff in a multiple access communication system 35 1998
6,603,745 Method and apparatus for reverse link overload detection 22 1998
6,539,236 Establishment of a connection between a base station and a mobile station using random access channels 11 1998
6,151,311 Mobile station assisted timing synchronization in a CDMA communication system 38 1999
7,003,290 Measurement reporting in a telecommunication system 22 1999
6,181,942 Method and apparatus for providing an alert with information signal between a mobile switching center and a base station 4 1999
6,304,755 Method and apparatus for performing mobile assisted hard handoff between communication systems 40 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
8,064,409 Method and apparatus using a multi-carrier forward link in a wireless communication system 3 1999
6,778,507 Method and apparatus for beamforming in a wireless communication system 39 1999
6,563,810 Closed loop resource allocation 30 1999
6,442,398 Method and apparatus for reverse link loading estimation 18 1999
6,621,804 Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel 38 1999
7,206,580 Method and apparatus for performing handoff in a high speed communication system 3 1999
6,771,776 Method and apparatus for re-synchronization of a stream cipher during handoff 8 1999
6,674,736 Method and apparatus for performing idle handoff in a multiple access communication system 14 1999
7,190,687 Method and apparatus for requesting point-to-point protocol (PPP) instances from a packet data services network 6 2000
7,197,017 Method and apparatus for channel optimization during point-to-point protocol (PPP) session requests 8 2000
6,546,248 Method and apparatus for generating pilot strength measurement messages 15 2000
7,519,044 Channel structure for communication systems 0 2000
6,167,270 Soft handoff in the transmission of supplemental channel data 55 2000
6,526,030 Channel structure for communication systems 19 2000
6,724,739 Method for handoff between an asynchronous CDMA base station and a synchronous CDMA base station 11 2000
6,564,042 Velocity-estimation-based gain tables 16 2000
7,876,729 Intersystem base station handover 12 2000
6,850,506 Forward-link scheduling in a wireless communication system 25 2000
6,775,252 Dynamic adjustment of search window size in response to signal strength 25 2000
6,535,739 Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities 12 2000
7,088,701 Method and apparatus for adaptive transmission control in a high data rate communication system 15 2000
6,654,611 Method and apparatus for performing idle handoff in a multiple access communication system 3 2000
7,096,021 Method for initiating in a terminal of a cellular network the measurement of power levels of signals and a terminal 3 2000
6,751,206 Method and apparatus for beam switching in a wireless communication system 12 2000
7,006,470 Method and apparatus for performing idle handoff in a multiple access communication system 2 2000
7,099,384 Method and apparatus for time-division power assignments in a wireless communication system 21 2000
7,042,869 Method and apparatus for gated ACK/NAK channel in a communication system 19 2000
6,711,208 Estimation of traffic-to-pilot ratios 22 2000
7,945,266 Method and apparatus for call recovery in a wireless communication system 1 2000
7,567,781 Method and apparatus for power level adjustment in a wireless communication system 6 2001
6,850,499 Method and apparatus for forward power control in a communication system 58 2001
6,760,587 Forward-link scheduling in a wireless communication system during soft and softer handoff 76 2001
7,778,642 Method and system for processing telephone calls involving two digital wireless subscriber units that avoid double vocoding 0 2001
7,961,616 Method and apparatus for congestion control in a wireless communication system 2 2001
7,009,953 Method and system for changing forward traffic channel power allocation during soft handoff 9 2001
6,757,520 Method and apparatus for selecting a serving sector in a data communication system 25 2001
7,058,035 Communication system employing multiple handoff criteria 15 2001
7,239,847 Method and apparatus for adaptive server selection in a data communication system 10 2001
6,731,936 Method and system for a handoff in a broadcast communication system 38 2001
6,810,254 Method and apparatus for performing mobile assisted hard handoff between communication systems 22 2001
6,680,925 Method and system for selecting a best serving sector in a CDMA data communication system 12 2001
7,336,952 Method and system for hard handoff in a broadcast communication system 6 2001
7,054,632 Method and apparatus for adaptive set management in a communication system 9 2001
7,233,794 Method for robust handoff in wireless communication system 3 2001
8,031,622 Method and apparatus for receive diversity in a communication system 2 2002
7,961,682 Handoff between base stations of different protocol revisions in a CDMA system 0 2002
7,068,658 Method and apparatus for resolving ambiguity in reception of multiple retransmitted frames 1 2002
7,352,722 Mitigation of link imbalance in a wireless communication system 16 2002
7,339,903 Enabling foreign network multicasting for a roaming mobile node, in a foreign network, using a persistent address 29 2002
6,922,547 Methods and apparatus for supporting group communications 50 2002
6,853,843 Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities 2 2002
7,457,267 Methods and apparatus for quickly exploiting a new link during hand-off in a wireless network 5 2002
7,813,740 Method and apparatus for managing imbalance in a communication system 2 2002
RE39177 Method and apparatus for performing soft hand-off in a wireless communication system 7 2002
7,139,274 Method and system for a data transmission in a communication system 34 2002
7,050,405 Method and system for a data transmission in a communication system 36 2002
7,339,894 Closed loop resource allocation 7 2002
6,788,963 Methods and apparatus for operating mobile nodes in multiple a states 18 2002
7,010,068 Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system 1 2003
7,020,465 Controlling hand-off in a mobile node with two mobile IP clients 5 2003
6,728,538 Method and apparatus for generating pilot strength measurement messages 5 2003
6,961,595 Methods and apparatus for operating mobile nodes in multiple states 13 2003
7,746,816 Method and system for a power control in a communication system 20 2003
7,356,020 Support of disparate addressing plans and dynamic HA address allocation in mobile IP 8 2003
7,453,801 Admission control and resource allocation in a communication system supporting application flows having quality of service requirements 17 2003
7,406,098 Resource allocation in a communication system supporting application flows having quality of service requirements 25 2003
7,564,824 Methods and apparatus for aggregating MIP and AAA messages 7 2003
8,649,352 Packet forwarding methods for use in handoffs 0 2003
7,882,346 Method and apparatus for providing authentication, authorization and accounting to roaming nodes 4 2003
7,440,426 Method and apparatus for reverse link overload detection 0 2003
8,068,453 Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel 3 2003
7,778,643 Power and timing control methods and apparatus 56 2003
7,668,573 Wireless timing and power control 17 2003
7,363,039 Method of creating and utilizing diversity in multiple carrier communication system 23 2003
8,190,163 Methods and apparatus of enhanced coding in multi-user communication systems 0 2003
7,496,073 Method and apparatus for performing idle handoff in a multiple access communication system 1 2003
8,427,936 Multiple-access hybrid OFDM-CDMA system 1 2003
7,796,563 Method and system for selecting a best serving sector in a CDMA data communication system 2 2003
8,526,510 Estimation of traffic-to-pilot ratios 0 2003
7,177,648 Method and apparatus for selecting a serving sector in a data communication system 12 2003
8,000,241 Methods and apparatus for controlling access link packet flow aggregation and resource allocation in a mobile communications system 2 2003
7,715,461 High data rate CDMA wireless communication system using variable sized channel codes 7 2004
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
7,254,394 Method and system for a handoff in a broadcast communication system 3 2004
7,400,606 Method and apparatus for beam switching in a wireless communication system 5 2004
7,697,501 Methods and apparatus for separating home agent functionality 4 2004
7,515,580 Method and apparatus for forward power control in a communication system 15 2004
7,158,640 Method and apparatus for re-synchronization of a stream cipher during handoff 1 2004
6,990,337 Methods and apparatus for the utilization of core based nodes for state transfer 30 2004
7,668,541 Enhanced techniques for using core based nodes for state transfer 4 2004
8,570,880 Method and apparatus for receiving broadcast in a wireless multiple-access communications system 0 2004
7,525,937 Method for extending mobile IP and AAA to enable integrated support for local access and roaming access connectivity 18 2004
7,912,485 Method and system for signaling in broadcast communication system 2 2004
7,212,821 Methods and apparatus for performing handoffs in a multi-carrier wireless communications system 37 2004
7,047,009 Base station based methods and apparatus for supporting break before make handoffs in a multi-carrier system 62 2004
6,993,333 Methods and apparatus of improving inter-sector and/or inter-cell handoffs in a multi-carrier wireless communications system 30 2004
7,151,933 Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities 1 2004
8,179,833 Hybrid TDM/OFDM/CDM reverse link transmission 0 2004
7,881,739 Method and apparatus for adaptive power control in a wireless voice and data communication system 4 2005
7,689,226 Method and system for signaling in broadcast communication system 4 2005
7,423,994 Methods and apparatus for searching a list of pilot signals 7 2005
7,421,281 Methods and apparatus for supporting group communications 2 2005
7,398,111 Methods and apparatus for operating mobile nodes in multiple states 5 2005
7,369,855 Methods and apparatus for the utilization of core based nodes for state transfer 5 2005
7,720,479 Methods and apparatus of improving inter-sector and/or inter-cell handoffs in a multi-carrier wireless communications system 4 2005
7,376,425 Base station based methods and apparatus for supporting break before make handoffs in a multi-carrier system 12 2005
7,499,701 Measurement reporting in a telecommunication system 6 2005
7,260,411 Aiding beam identification in a satellite system 2 2005
8,023,410 Messages and control methods for controlling resource allocation and flow admission control in a mobile communications system 9 2005
7,509,123 Controlling hand-off in a mobile node with two mobile IP clients 2 2005
7,664,209 Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system 0 2006
7,519,027 Method and apparatus for performing idle handoff in a multiple access communication system 2 2006
8,593,932 Efficient signal transmission methods and apparatus using a shared transmission resource 0 2006
7,505,436 Communication system employing multiple handoff criteria 1 2006
7,751,370 Method and apparatus for forward link rate scheduling 4 2006
7,773,547 Method and apparatus for requesting point-to-point protocol (PPP) instances from a packet data services network 0 2006
7,593,408 Method and apparatus for resolving ambiguity in reception of multiple retransmitted frames 0 2006
8,509,799 Provision of QoS treatment based upon multiple requests 0 2006
7,764,594 Multiple-access hybrid OFDM-CDMA system 5 2006
8,311,027 Method and apparatus for high rate packet data transmission 0 2006
8,194,598 Method and system for a data transmission in a communication system 3 2006
8,526,394 Method and system for hard handoff in a broadcast communication system 0 2006
8,351,372 Method and apparatus for high rate packet data transmission 1 2006
8,089,924 Method and apparatus for high rate packet data transmission 2 2006
8,077,655 Method and apparatus for high rate packet data transmission 2 2006
8,009,625 Method and apparatus for high rate packet data transmission 2 2006
7,995,531 Method and apparatus for high rate packet data transmission 2 2006
7,848,282 Method and apparatus for high rate packet data transmission 5 2006
7,848,283 Method and apparatus for high rate packet data transmission 2 2006
7,848,284 Method and apparatus for high rate packet data transmission 2 2006
8,005,042 Method and apparatus for high rate packet data transmission 2 2006
7,848,285 Method and apparatus for high rate packet data transmission 2 2006
7,499,427 Method and apparatus for high rate packet data transmission 6 2006
8,675,549 Method of serving sector maintenance in a wireless communication systems 0 2006
8,520,628 Method and apparatus for monitoring other channel interference in wireless communication system 0 2006
8,477,808 Method and apparatus of assigning in wireless communication systems 2 2006
8,457,042 Method and apparatus for transmitting and receiving a sectorparameters message in an active state in wireless communication system 1 2006
8,331,285 Method and apparatus of establishing access channel in wireless communication systems 5 2006
8,326,330 Method and apparatus for updating configuration attributes using FastRepage attribute in wireless communication systems 4 2006
8,289,897 Method and apparatus for processing open state in wireless communication system 4 2006
8,289,908 Method and apparatus for processing simultaneous assignment in wireless communication systems 1 2006
8,265,066 Method and apparatus for reducing power consumption in wireless communication systems 6 2006
8,248,950 Method of transmitting and receiving a redirect message in a wireless communication system 6 2006
8,238,289 Method and apparatus for requesting selected interlace mode in wireless communication systems 6 2006
8,218,479 Method and apparatus for processing a multi-code word assignment in wireless communication systems 6 2006
8,199,661 Method and apparatus for processing supplemental and non supplemental assignments 6 2006
8,199,716 Method and system for performing handoff in wireless communication systems 0 2006
7,373,149 Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities 2 2006
8,538,024 Method and apparatus for initializing a new stream cipher during handoff 0 2006
8,588,777 Method and apparatus for robust handoff in wireless communication systems 0 2007
7,580,709 Method and apparatus for performing handoff in communications systems 1 2007
8,363,616 Method and apparatus for channel optimization during point-to-point protocol (PPP) session requests 1 2007
7,653,157 Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system 1 2007
8,094,623 Method and apparatus for choosing a sector based on a scaled forward link metric 5 2007
7,937,086 Method and system for a handoff in a broadcast communication system 4 2007
7,869,803 Profile modification for roaming in a communications environment 2 2007
7,603,123 Method and system for performing a handoff in a wireless communication system, such as a hard handoff 4 2007
7,680,052 Closed loop resource allocation 0 2007
8,184,611 Mobile station assisted timing synchronization in a CDMA communication system 0 2007
8,014,363 Mitigation of link imbalance in a wireless communication system 0 2008
8,102,792 Enabling foreign network multicasting for a roaming mobile node, in a foreign network, using a persistent address 0 2008
8,059,595 Handoff of data attachment point 0 2008
8,374,613 Method of creating and utilizing diversity in a multiple carrier communication system 1 2008
8,559,411 Support of disparate addressing plans and dynamic HA address allocation in mobile IP 0 2008
7,962,142 Methods and apparatus for the utilization of core based nodes for state transfer 7 2008
8,554,226 Base station base methods and apparatus for supporting break before making handoffs in a multi-carrier system 0 2008
8,553,595 Controlled superposition coding in multi-user communication systems 1 2008
8,411,639 Methods and apparatus for quickly exploiting a new link during hand-off in a wireless network 0 2008
8,095,130 Controlling hand-off in a mobile node with two mobile IP clients 1 2009
8,179,840 Method for extending mobile IP and AAA to enable integrated support for local access and roaming access connectivity 1 2009
8,514,832 Methods and apparatus enabling increased throughput on the reverse link 0 2009
8,010,113 Method and apparatus for performing handoff in communication systems 0 2009
8,189,540 Method and apparatus for high rate packet data transmission 0 2009
8,170,558 Method and system for performing a handoff in a wireless communication system, such as a hard handoff 0 2009
8,428,594 Methods and apparatus of improving inter-sector and/or inter cell handoffs in a multi-carrier wireless communications system 0 2010
8,620,332 Wireless timing and power control 0 2010
8,213,485 High rate CDMA wireless communication system using variable sized channel codes 1 2010
8,077,695 Methods and apparatus for separating home agent functionality 3 2010
8,457,092 Quick paging channel with reduced probability of missed page 1 2010
8,396,033 Method and apparatus for forward link rate scheduling 0 2010
8,472,306 Multi-access hybrid OFDM-CDMA system 0 2010
8,477,728 Handoff between base stations of different protocol revisions in a CDMA system 0 2010
8,615,241 Methods and apparatus for facilitating robust forward handover in long term evolution (LTE) communication systems 0 2011
8,315,662 User specific downlink power control channel Q-bit 2 2011
8,644,862 Method and system for signaling in broadcast communication system 0 2011
8,599,712 Method and apparatus for setting reverse link CQI reporting modes in wireless communication system 1 2011
8,457,099 Methods and apparatus for separating home agent functionality 0 2011
8,588,277 High data rate CDMA wireless communication system using variable sized channel codes 0 2012
 
KINETO WIRELESS, INC. (66)
7,996,009 Method for authenticating access to an unlicensed wireless communications system using a licensed wireless communications system authentication process 0 2002
7,890,099 Method for automatic and seamless call transfers between a licensed wireless system and an unlicensed wireless system 0 2002
6,922,559 Unlicensed wireless communications base station to facilitate unlicensed and licensed wireless communications with a subscriber device, and method of operation 81 2002
6,647,426 Apparatus and method for integrating an unlicensed wireless communications system and a licensed wireless communications system 112 2002
7,308,263 Apparatus for supporting the handover of a telecommunication session between a licensed wireless system and an unlicensed wireless system 54 2002
7,127,250 Apparatus and method for extending the coverage area of a licensed wireless communication system using an unlicensed wireless communication system 64 2003
7,634,269 Apparatus and method for extending the coverage area of a licensed wireless communication system using an unlicensed wireless communication system 9 2004
7,640,008 Apparatus and method for extending the coverage area of a licensed wireless communication system using an unlicensed wireless communication system 20 2004
7,933,598 Methods and apparatuses for effecting handover in integrated wireless systems 3 2005
7,756,546 Methods and apparatuses to indicate fixed terminal capabilities 0 2005
7,873,015 Method and system for registering an unlicensed mobile access subscriber with a network controller 3 2005
7,369,859 Method and system for determining the location of an unlicensed mobile access subscriber 50 2005
8,041,385 Power management mechanism for unlicensed wireless communication systems 0 2005
7,957,348 Method and system for signaling traffic and media types within a communications network switching system 4 2005
7,953,423 Messaging in an unlicensed mobile access telecommunications system 6 2005
7,606,190 Apparatus and messages for interworking between unlicensed access network and GPRS network for data services 25 2005
7,565,145 Handover messaging in an unlicensed mobile access telecommunications system 14 2005
7,471,655 Channel activation messaging in an unlicensed mobile access telecommunications system 31 2005
7,349,698 Registration messaging in an unlicensed mobile access telecommunications system 39 2005
7,843,900 Mechanisms to extend UMA or GAN to inter-work with UMTS core network 6 2005
7,515,575 Intelligent access point scanning with self-learning capability 6 2005
7,283,821 Radio resources messaging for a mobile station in an unlicensed wireless communication system 27 2005
7,245,916 Radio resources messaging in an unlicensed wireless communication system 32 2005
7,215,961 Registration messaging for a mobile station in an unlicensed wireless communication system 32 2005
7,209,744 Registration messaging for an unlicensed wireless communication system 30 2005
7,606,568 Messaging for registration in an unlicensed wireless communication system 11 2005
7,369,854 Release of radio resources in an unlicensed wireless communication system 32 2005
7,324,818 Mobile station implementation for switching between licensed and unlicensed wireless systems 27 2005
7,200,399 Ciphering configuration procedure in an unlicensed wireless communication system 26 2005
7,197,309 Mobile station ciphering configuration procedure in an unlicensed wireless communication system 25 2005
7,171,205 Architecture of an unlicensed wireless communication system with a generic access point 28 2005
7,107,055 Mobile station GPRS implementation for switching between licensed and unlicensed wireless systems 35 2005
7,634,270 GPRS data protocol architecture for an unlicensed wireless communication system 3 2005
7,634,271 GSM signaling protocol architecture for an unlicensed wireless communication system 1 2005
7,212,819 GPRS signaling protocol architecture for an unlicensed wireless communication system 24 2005
7,283,822 Service access control interface for an unlicensed wireless communication system 37 2006
7,272,397 Service access control interface for an unlicensed wireless communication system 37 2006
7,720,481 Apparatus for supporting the handover of a telecommunication session between a licensed wireless system and an unlicensed wireless system 2 2007
7,885,644 Method and system of providing landline equivalent location information over an integrated communication system 20 2007
8,165,086 Method of providing improved integrated communication system data service 0 2007
7,912,004 Generic access to the Iu interface 8 2007
7,852,817 Generic access to the Iu interface 11 2007
7,454,207 Service access control interface for an unlicensed wireless communication system 19 2007
8,204,502 Method and apparatus for user equipment registration 3 2007
8,073,428 Method and apparatus for securing communication between an access point and a network controller 1 2007
8,036,664 Method and apparatus for determining rove-out 6 2007
7,995,994 Method and apparatus for preventing theft of service in a communication system 32 2007
8,150,397 Method and apparatus for establishing transport channels for a femtocell 3 2007
8,005,076 Method and apparatus for activating transport channels in a packet switched communication system 9 2007
7,929,977 Method and system for determining the location of an unlicensed mobile access subscriber 0 2007
7,974,624 Registration messaging in an unlicensed mobile access telecommunications system 34 2007
7,574,213 Apparatus for supporting the handover of a telecommunication session between a licensed wireless system and an unlicensed wireless system 9 2007
8,019,331 Femtocell integration into the macro network 3 2008
8,090,371 Network controller messaging for release in an unlicensed wireless communication system 2 2008
7,773,993 Network controller messaging for channel activation in an unlicensed wireless communication system 8 2008
7,668,558 Network controller messaging for paging in an unlicensed wireless communication system 0 2008
7,684,803 Network controller messaging for ciphering in an unlicensed wireless communication system 6 2008
7,949,326 Apparatus and method for extending the coverage area of a licensed wireless communication system using an unlicensed wireless communication system 2 2008
7,818,007 Mobile station messaging for ciphering in an unlicensed wireless communication system 2 2008
7,769,385 Mobile station messaging for registration in an unlicensed wireless communication system 8 2008
7,904,084 Intelligent access point scanning with self-learning capability 1 2009
8,041,335 Method and apparatus for routing of emergency services for unauthorized user equipment in a home Node B system 12 2009
8,165,585 Handover messaging in an unlicensed mobile access telecommunications system 1 2009
8,130,703 Apparatus and messages for interworking between unlicensed access network and GPRS network for data services 0 2009
8,160,588 Method and apparatus for supporting the handover of a telecommunication session between a licensed wireless system and an unlicensed wireless system 0 2010
8,045,493 Mechanisms to extend UMA or GAN to inter-work with UMTS core network 0 2010
 
INTEL CORPORATION (27)
6,088,590 Method and system for mobile controlled handoff and link maintenance in spread spectrum communication 30 1994
5,648,982 Spread spectrum transmitter 44 1994
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 127 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 17 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 13 1995
5,680,414 Synchronization apparatus and method for spread spectrum receiver 37 1995
5,671,219 Communication protocol for spread spectrum communication 44 1995
5,659,574 Multi-bit correlation of continuous phase modulated signals 19 1995
5,648,955 Method for power control in a TDMA spread spectrum communication system 104 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 18 1995
5,610,940 Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal 48 1995
6,041,046 Cyclic time hopping in time division multiple access communication system 25 1995
6,005,856 Communication protocol for spread spectrum wireless communication system 45 1996
6,161,013 Wireless communication system and method 68 1996
5,991,625 Spread spectrum wireless telephone system 21 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 143 1996
5,787,076 Multi-mode TDMA spread spectrum communication system 28 1997
5,881,100 Method and apparatus for coherent correlation of a spread spectrum signal 13 1997
6,985,466 Downlink signal processing in CDMA systems utilizing arrays of antennae 38 1999
6,496,694 Wireless local loop with intelligent base station 27 2000
7,209,745 Cellular wireless re-use structure that allows spatial multiplexing and diversity communication 1 2000
6,947,469 Method and Apparatus for wireless spread spectrum communication with preamble processing period 8 2002
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (21)
RE36017 Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system 2 1993
7,212,820 Mobile assisted handover using CDMA 9 1995
5,577,047 System and method for providing macrodiversity TDMA radio communications 27 1995
5,915,221 Neighbor cell list creation and verification in a telecommunications system 64 1995
5,970,407 Compensation for mobile assisted handoff measurement inaccuracies 12 1996
5,901,145 Mobile station handoff between a spread spectrum communications system and a frequency division communications system 15 1997
6,078,817 System and method of dynamically increasing the capacity of a code division multiple access radio telecommunications network 37 1997
5,933,777 System and method for allocating channel elements in a code division multiple access radio telecommunications network 47 1997
RE36078 Handover method for mobile radio system 11 1997
RE36079 Handover method for mobile radio system 1 1997
6,895,245 Telecommunications interexchange measurement transfer 19 1998
6,556,829 Mobile communications system 10 1998
RE37754 Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system 0 1998
RE37685 Handover method for mobile radio system 1 1999
RE37787 Handover method for mobile radio system 2 1999
6,134,438 Local control enhancement in a telecommunications system 15 1999
6,731,622 Multipath propagation delay determining means using periodically inserted pilot symbols 77 1999
6,473,614 Method and means for determining a handover in a radio communication system 14 1999
6,845,238 Inter-frequency measurement and handover for wireless communications 88 2000
7,181,218 Commanding handover between differing radio access technologies 24 2002
7,248,874 Mobile assisted handover using CDMA 2 2003
 
NTT DOCOMO, INC. (19)
6,728,227 Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch 12 1999
7,693,106 Neighboring base station information update method, information management method for cell search in mobile communications system, cell search method of mobile station, mobile communications system, mobile station, base station and control station 4 2000
7,072,655 Mobile communication system and method for controlling receiving quality 3 2001
7,403,777 Mobile communication system, mobile station and diversity handover branch control method 4 2004
7,289,809 Mobile communication system, mobile station and diversity handover branch control method 3 2006
8,275,133 Method and system for mobile communications 0 2006
7,664,507 Method and system for mobile communications 3 2006
7,570,950 Mobile communication system, mobile station and diversity handover branch control method 3 2006
7,630,716 Method and system for mobile communications 16 2007
7,792,531 Method and system for mobile communications 1 2007
7,873,014 Mobile communication system, mobile station and diversity handover branch control method 1 2007
8,064,908 Mobile communication system and mobile station performing diversity handover 0 2008
7,953,414 Method and system for mobile communications 2 2009
8,331,935 Method and system for mobile communications 1 2009
8,259,675 Method and system for mobile communications 1 2009
8,542,835 Method and system for mobile communications 0 2009
7,907,730 Method and system for mobile communications 1 2009
RE43296 Mobile communication system, mobile station and diversity handover branch control method 0 2009
8,090,373 Center for a mobile communication system performing diversity handover 0 2010
 
NEC CORPORATION (17)
5,420,863 Mobile communication system with cell-site switching for intra-cell handoff 40 1993
5,436,956 Method and arrangement for reducing the number of handoff requests in a cellular mobile communications system 18 1993
5,844,898 Method of radio channel switching over in a mobile radio communications system 5 1996
5,771,451 Method of transmission power control in a cellular mobile communication system and apparatus thereof 82 1996
5,987,013 Handoff control with a pilot used in a cell of a neighboring cell in a CDMA mobile communication network on a service frequency of the neighboring cell 23 1997
6,111,864 Hand-off method and apparatus in CDMA cellular system 26 1997
6,418,320 Mobile station and a method of reducing interference among radio channels in the mobile station 27 1998
6,400,953 CDMA type mobile radio communication system capable of realizing an effective system operation without excess and deficiency of radio base stations simultaneously connected 21 1998
6,141,555 Cellular communication system, and mobile and base stations used in the same 22 1998
6,140,961 Directivity control circuitry for an adaptive antenna 3 1999
6,477,159 Mobile communication system and a method thereof 13 1999
6,904,080 Receiving circuit, mobile terminal with receiving circuit, and method of receiving data 3 1999
6,535,740 System and method of controlling transmission electric power in a CDMA base station 13 1999
6,539,233 Call control method in mobile communication and system therefor 18 2000
6,947,746 Mobile communications system, mobile station, control method and recording medium 2 2002
RE39735 Cellular communication system, and mobile and base stations used in the same 0 2002
RE41891 Cellular communication system, and mobile and base stations used in the same 0 2004
 
MOTOROLA MOBILITY LLC (15)
5,548,808 Method for performing a handoff in a communication system 60 1993
5,889,768 Method of and apparatus for pilot channel acquisition 49 1996
6,160,799 Method of and apparatus for pilot set maintenance 13 1996
5,950,131 Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone 139 1996
5,812,540 Method and apparatus for mitigating an orphan condition in a spread-spectrum communication system 21 1996
5,987,012 Method of handing off and a wireless communication device 38 1996
5,920,549 Method of handing off and a wireless communication device 60 1996
5,854,785 System method and wireless communication device for soft handoff 31 1996
5,970,058 Method and apparatus for freeing a frame to aid in handoff determination in a code division multiple access communication system 24 1997
6,175,587 Communication device and method for interference suppression in a DS-CDMA system 79 1997
6,175,588 Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system 120 1997
6,161,015 Method for improving communication coverage in multi-cell communication systems using location information 14 1998
6,104,927 Communication system, mobile station, and method for mobile station registration 12 1998
6,909,707 Method and apparatus for pseudo-random noise offset reuse in a multi-sector CDMA system 29 2001
7,043,226 Variable expiration parameter of a wireless communication device based upon signal strength 34 2003
 
SAMSUNG ELECTRONICS CO., LTD. (15)
6,304,562 Asymmetric forward power control in a CDMA communication 30 1998
6,272,122 Pilot PN offset assigning method for digital mobile telecommunications system 41 1998
6,477,155 Method for determining the number of effective channels and the effective channel rate in a CDMA network 5 1999
6,400,952 Method and apparatus for idle handoff in a cellular system 18 1999
7,397,777 Handoff control method and a mobile station employing the same 5 2000
6,937,640 Apparatus and method for reporting service load to mobile station in mobile telecommunication system 10 2001
7,877,093 Method for compulsorily performing handover in broadband wireless communication system 3 2004
7,298,773 Apparatus and method for reporting service load to mobile station in mobile telecommunication system 4 2005
7,623,864 System and method for handover to minimize service delay due to ping pong effect in BWA communication system 4 2005
7,636,571 Method and apparatus for allocating channels in an orthogonal frequency division multiple access system 13 2005
7,480,509 Handover system and method for minimizing service delay due to pingpong effect in a broadband wireless access communication system 1 2005
7,676,226 Fast handover method optimized for IEEE 802.11 networks 10 2005
7,813,734 System and method to perform a handover in a broadband wireless access communication system 3 2007
8,112,088 Method for compulsorily performing handover in broadband wireless communication system 1 2009
8,374,611 Method for compulsorily performing handover in broadband wireless communication system 0 2011
 
LUCENT TECHNOLOGIES INC. (12)
5,697,053 Method of power control and cell site selection 47 1994
5,794,149 Base station controlled handoff method and apparatus 72 1995
6,507,568 Enhanced access in wireless communication systems under rapidly fluctuating fading conditions 14 1997
6,097,954 Method for performing a soft handoff 29 1997
6,181,943 Method and apparatus for inter-frequency hand-off in wireless communication systems 35 1998
6,381,235 Wireless CDMA system having a unique forward configuration control channel 10 1998
6,201,969 Control of handoff in CDMA cellular systems 26 1998
6,374,103 Method and system for overhead message updates 9 1998
6,539,225 Seamless data network telecommunication service during mobile wireless call handoff 51 1999
6,594,243 Methods and apparatus for enhanced soft handoff in a CDMA wireless communication system 15 1999
6,603,972 Apparatus, method and system for voice communication hand-off in a mobile packet data network environment 16 1999
6,873,845 Method of power control and cell site selection based upon path gain and interference level 2 2002
 
ADC TELECOMMUNICATIONS, INC. (11)
5,627,879 Cellular communications system with centralized base stations and distributed antenna units 110 1994
5,852,651 Cellular communications system with sectorization 69 1994
5,642,405 Cellular communications system with centralized base stations and distributed antenna units 63 1994
5,657,374 Cellular communications system with centralized base stations and distributed antenna units 91 1995
5,644,622 Cellular communications system with centralized base stations and distributed antenna units 108 1995
6,112,086 Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communications system with centralized base stations and distributed antenna units 38 1997
6,556,551 Multi-frequency pilot beacon for CDMA systems 33 1999
RE40564 Cellular communications system with sectorization 5 2000
7,599,711 Systems and methods for analog transport of RF voice/data communications 2 2006
8,583,100 Distributed remote base station system 0 2007
RE43964 Cellular communications system with sectorization 0 2007
 
NTT MOBILE COMMUNICATIONS NETWORK INC. (11)
5,487,083 Hand-off method and mobile station for spread spectrum mobile communication 34 1994
6,483,866 Multi-station transmission method and receiver for inverse transforming two pseudo-orthogonal transmission sequences used for metric calculation and base station selection based thereon 22 1995
6,157,837 Mobile communication system, network and mobile station 8 1997
6,122,265 Scheme for wire line data transmission in mobile communication system 18 1997
5,878,350 Scheme for controlling transmission powers during soft handover in a CDMA mobile communication system 39 1997
7,236,787 Method and system for mobile communications 48 1998
6,470,188 Method for handover 24 1998
6,591,104 Method for handover 6 2002
7,383,045 Method and system for mobile communications 10 2006
7,577,435 Method and system for mobile communications 2 2006
8,185,158 Method and system for mobile communications 51 2009
 
UNWIRED PLANET, LLC (11)
5,883,888 Seamless soft handoff in a CDMA cellular communications system 54 1996
6,061,556 System and method for secondary traffic charging in a radio telecommunications network 16 1997
6,078,813 Handover quality control in a mobile communications system 8 1997
6,370,397 Search window delay tracking in code division multiple access communication systems 60 1998
6,381,458 Method and system for soft handoff control based on access network capacity 44 1998
6,591,100 Cellular communication device with scanning receiver and continuous mobile communication system employing same 8 1998
6,600,917 Telecommunications network broadcasting of service capabilities 27 1999
7,016,320 Subscriber station, network control means and method for carrying out inter-frequency measurements in a mobile communication system 35 2000
6,907,245 Dynamic offset threshold for diversity handover in telecommunications system 25 2001
6,954,644 Using geographical coordinates to determine mobile station time position for synchronization during diversity handover 6 2001
7,522,560 Method, system and equipment for retransmission in communications systems 2 2002
 
CANON KABUSHIKI KAISHA (9)
5,722,068 Imminent change warning 24 1994
5,627,835 Artificial window size interrupt reduction system for CDMA receiver 41 1995
5,732,347 Imminent change warning 43 1995
5,850,394 CDMA communications system using multiplexed signaling data lines 3 1997
6,018,655 Imminent change warning 33 1997
5,966,430 Communication apparatus capable of communicating data and speech selectively through single communication line 7 1997
6,256,501 Cellular mobile telecommunications system for controlling a hand-off by a mobile station 23 1998
7,159,042 Method and device for communicating a message on a network and systems using them 7 2000
7,747,783 Method and device for communicating a message on a network and systems using them 2 2006
 
INTERDIGITAL TECHNOLOGY CORPORATION (8)
6,754,497 Seamless handoff system and method 5 2000
7,929,498 Adaptive forward power control and adaptive reverse power control for spread-spectrum communications 25 2001
7,502,406 Automatic power control system for a code division multiple access (CDMA) communications system 7 2002
8,213,994 Mobile communications system and method for providing common channel coverage using beamforming antennas 0 2003
7,756,190 Transferring voice and non-voice data 1 2003
7,903,613 Code division multiple access (CDMA) communication system 3 2004
7,535,874 Method and apparatus for adaptive power control for spread-spectrum communications 14 2004
7,706,332 Method and subscriber unit for performing power control 6 2005
 
NOKIA TELECOMMUNICATIONS OY (7)
5,850,607 Method and apparatus for providing control handoff in a cellular telecommunications system 41 1996
5,887,021 Base station receiver and a method for receiving a signal 27 1996
5,862,124 Method for interference cancellation in a cellular CDMA network 25 1996
6,415,163 Method for transmitting pilot channels and a cellular radio system 29 1997
5,966,670 Method for transmitting a pilot signal, and a cellular radio system 63 1997
6,570,862 Method for selecting the way to perform a handover, and a cellular radio system 9 1998
6,639,908 Method of facilitating transmission level measurement, and base station 13 1999
 
DENSO CORPORATION (6)
7,133,675 Forward link based rescue channel method and apparatus for telecommunication systems 6 2001
7,187,930 Retry limits for connection rescue procedures in telecommunication systems 2 2001
7,006,821 Method and apparatus for dynamically determining a mobile station's active set during a connection rescue procedure 8 2001
6,928,285 Minimum interference multiple-access method and system for connection rescue 3 2001
6,996,391 Forward-link rescue synchronization method and apparatus 17 2001
7,010,319 Open-loop power control enhancement for blind rescue channel operation 8 2002
 
NOKIA CORPORATION (6)
6,091,717 Method for scheduling packet data transmission 81 1997
7,254,392 Intersystem handover with modified parameters 6 2001
RE44358 Subscriber registrations in a mobile communication system 0 2002
7,818,002 Subscriber registrations in a mobile communication system 5 2002
7,085,570 Handover method, system and radio network controller 11 2002
8,054,811 Method for scheduling packet data transmission 0 2008
 
NEXUS 1994 LIMITED (5)
5,335,246 Pager with reverse paging facility 93 1992
5,379,047 Remote position determination system 73 1993
5,430,759 Low-power frequency-hopped spread spectrum reverse paging system 115 1993
5,519,718 Remote unit for use with remote pager 19 1994
5,499,266 Low-power frequency-hopped spread spectrum acknowledgement paging system 20 1994
 
APPLE INC. (4)
5,974,318 Method and system for increasing capacity and improving performance of a cellular network 25 1997
6,310,856 CDMA communications system having a searcher receiver and method therefor 26 1998
6,112,089 Method and system for increasing capacity and improving performance of a cellular network 25 1999
7,649,994 System and method for decoding CDMA quality channel 0 2003
 
FUJITSU LIMITED (4)
6,108,548 Mobile station and soft handoff method 26 1997
7,127,252 Radio terminal equipment 3 2000
7,236,788 Soft hand-off in cellular mobile communications networks 7 2004
8,189,513 Radio base station apparatus and base station controller 0 2011
 
KYOCERA CORPORATION (4)
7,444,153 Communication apparatus controller, communication apparatus and communication system 3 2004
8,200,148 Communication control apparatus, communication apparatus and communication system 1 2008
8,290,468 Method for controlling a handover that switches connection from a source base station apparatus to a destination base station apparatus, and control apparatus and terminal apparatus utilizing the same 0 2009
8,145,204 Communication terminal out of range determination method, wireless communication system switching method and communication terminal 0 2010
 
SBC TECHNOLOGY RESOURCES, INC. (4)
6,044,272 Mobile assisted handoff system and method 22 1997
6,694,138 Mobile assisted handoff system and method 7 2000
7,043,243 Mobile assisted handoff system and method 3 2003
7,242,938 Mobile assisted handoff system and method 4 2006
 
XIRCOM, INC. (4)
6,229,792 Spread spectrum communication system 47 1995
6,275,704 Multiple access communication system with polarized antennas 16 1997
6,282,228 Spread spectrum codes for use in communication 20 1997
6,317,452 Method and apparatus for wireless spread spectrum communication with preamble sounding gap 42 1999
 
GTE WIRELESS INCORPORATED (3)
7,146,156 Cellular radiotelephone system with remotely programmed mobile stations 3 2003
8,107,997 System and method of telephonic dialing simulation 0 2004
8,165,626 System and method of telephonic dialing simulation 0 2007
 
LSI LOGIC CORPORATION (3)
6,567,666 Forward link inter-generation soft handoff between 2G and 3G CDMA systems 33 1999
6,865,173 Method and apparatus for performing an interfrequency search 16 1999
6,804,519 Forward link inter-generation soft handoff between 2G and 3G CDMA systems 11 2003
 
MCMASTER UNIVERSITY (3)
8,009,635 Reducing handoff latency in a wireless local area network through an activation alert that affects a power state of a receiving mesh access point 3 2006
8,249,602 Reducing handoff latency in a wireless local area network through an activation alert that affects a power state of a receiving mesh access point 1 2011
8,509,191 Reducing handoff latency in a wireless local area network through an activation alert that affects a power state of a receiving mesh access point 0 2012
 
MEDIATEK INC. (3)
8,086,241 Handoff methods, and devices utilizing same 0 2004
7,321,771 Control method capable of reducing call dropped rate of mobile station in wireless communication system, control circuit and mobile station thereof 0 2004
8,583,123 Methods for controlling radio links in a cellular communication system 0 2008
 
NORTEL NETWORKS LIMITED (3)
6,049,715 Method and apparatus for evaluating a received signal in a wireless communication utilizing long and short term values 59 1997
6,069,871 Traffic allocation and dynamic load balancing in a multiple carrier cellular wireless communication system 93 1998
6,192,246 Method and system for increasing capacity and improving performance of a cellular network 20 1999
 
TEXAS INSTRUMENTS INCORPORATED (3)
6,771,691 System and method for extracting soft symbols in direct sequence spread spectrum communications 0 2000
7,031,374 System and method for selecting sample streams in direct sequence spread spectrum communications 3 2000
6,987,799 System and method for demodulating associated information channels in direct sequence spread spectrum communications 0 2001
 
XIRCOM II WIRELESS, INC. (3)
6,094,575 Communication system and method 97 1996
5,953,370 Apparatus for receiving and correlating a spread spectrum signal 14 1997
6,532,365 PCS pocket phone/microcell communication over-air protocol 33 2000
 
AGERE SYSTEMS INC. (2)
6,278,877 Handover method for mobile wireless station 19 1993
7,079,847 Controller and transceiver employable in a wireless communications network 6 2001
 
AGERE SYSTEMS LLC (2)
8,478,281 Cell phone extension using wireless piconet 0 2007
8,417,287 Virtual gateway node for dual-mode wireless phones 0 2011
 
ALCATEL-LUCENT USA INC. (2)
6,038,450 Soft handover system for a multiple sub-carrier communication system and method thereof 141 1997
7,818,001 Fine grain downlink active set control 0 2005
 
AT&T CORP. (2)
6,052,594 System and method for dynamically assigning channels for wireless packet communications 294 1997
7,133,380 System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array 41 2001
 
AVAYA INC. (2)
5,444,766 Mobile-synchronized handoff in a wireless communications system 18 1993
6,728,540 Assisted handover in a wireless communication system 20 1998
 
CELLCO PARTNERSHIP D/B/A VERIZON WIRELESS (2)
6,035,197 Method and system for providing a handoff from a CDMA cellular telephone system 30 1994
6,240,292 Method and system for providing a handoff from a CDMA cellular telephone system 21 1999
 
ERICSSON AB (2)
6,038,448 Wireless communication system having hand-off based upon relative pilot signal strengths 64 1997
6,944,147 System and method for maximizing capacity in a telecommunications system 13 2001
 
ERICSSON INC. (2)
5,930,727 Analog fax and modem requests in a D-AMPS multi-line terminal system 11 1995
7,050,802 Cellular communication device with scanning receiver and continuous mobile communication system employing same 6 2003
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
5,457,680 Data gateway for mobile data radio terminals in a data communication network 141 1993
5,448,569 Handoff monitoring in cellular communication networks using slow frequency hopping 88 1994
 
IPR LICENSING, INC. (2)
8,265,630 Antenna adaptation to manage the active set to manipulate soft hand-off regions 0 2006
8,676,131 Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure 0 2011
 
LG INFORMATION & COMMUNICATIONS, LTD. (2)
6,075,990 Handoff control method and communication system in a multiple frequency environment 48 1998
6,337,984 Method for controlling a handoff in a communication system 31 1998
 
MITSUBISHI DENKI KABUSHIKI KAISHA (2)
5,432,651 Data conversion device and recording/reproduction apparatus 16 1993
7,047,003 Mobile communication system, mobile unit and network host processor 3 2003
 
NOKIA MOBILE PHONES LTD. (2)
5,737,703 Multi-mode radio telephone which executes handover between different system 69 1995
5,710,974 Method for improving the reliability of a handover and call establishment, and a cellular radio system 53 1996
 
RESEARCH IN MOTION LIMITED (2)
5,771,452 System and method for providing cellular communication services using a transcoder 10 1995
6,658,045 CDMA communications system adaptive to mobile unit speed 39 1999
 
ROHDE & SCHWARZ GMBH & CO. KG (2)
7,146,289 Time delay evaluation 0 2003
7,424,390 Method to evaluate whether a time delay is better than a time limit 0 2003
 
SPRINT SPECTRUM L.P. (2)
7,693,521 Method and system for mobile station handoff 5 2004
7,894,816 Method of selecting carrier frequency for call origination 1 2007
 
UTSTARCOM KOREA LIMITED (C/O OF UTSTARCOM, INC.) (2)
6,584,315 Method of allocating frame offset and link in base station 7 2000
6,781,966 Forward direction power control method using backward direction power control sub-channel for mobile communication system 4 2000
 
ADC Tolocommunications, Inc. and ADC Mobile Systems, Inc. (1)
6,836,660 Methods and systems for communicating in a cellular network 13 2000
 
ADC Wireless, Inc. (1)
7,962,111 Distributed automatic gain control system 3 2009
 
ALCATEL N.V. (1)
5,914,948 Mobile radio system with time-division multiplexing 5 1996
 
ANDREW LLC (1)
7,263,293 Indoor wireless voice and data distribution system 15 2002
 
AT&T INTELLECTUAL PROPERTY II, L.P. (1)
8,036,164 System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array 4 2006
 
AT&T IPM CORP. (1)
5,410,538 Method and apparatus for transmitting signals in a multi-tone code division multiple access communication system 94 1993
 
AT&T WIRELESS SERVICES, INC. (1)
6,393,281 Seamless hand-off for air-to-ground systems 32 1995
 
BEIJING XINWEI TELECOM TECHNOLOGY CO., LTD. (1)
6,980,527 Smart antenna CDMA wireless communication system 24 2000
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
6,801,772 Cellular mobile telephone network operation 86 2001
 
CAMEMBERT DEVELOPMENT LIMITED LIABILITY COMPANY (1)
7,447,506 Apparatus and method for reducing network congestion 3 2002
 
CDC PROPRIETE INTELLECTUELLE (1)
5,826,190 Emergency handoff method of redirecting calls in a satellite communication system 24 1997
 
CINTERION WIRELESS MODULES GMBH (1)
5,539,749 Method for merging data streams 25 1994
 
CORE WIRELESS LICENSING S.A.R.L (1)
6,009,328 Inter-exchange soft handoff in a cellular telecommunications system 44 1996
 
DOT WIRELESS, INC. (1)
6,959,033 System and method for assigning combiner channels in spread spectrum communications 3 2000
 
FRANCE TELECOM (1)
6,859,654 Method for transmitting measurement reports in a mobile communications system 20 2000
 
HEWLETT-PACKARD COMPANY (1)
5,463,315 Spike suppression for a tester circuit for integrated circuits 9 1993
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
7,639,642 Wireless network monitoring methods, configuration devices, communications systems, and articles of manufacture 1 2003
 
HITACHI, LTD. (1)
6,975,604 Base station controller and mobile station 25 2000
 
HTC CORPORATION (1)
7,672,291 Methods for establishing wireless network communication and device utilizing same 18 2005
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
7,006,473 Soft handover method for CDMA mobile communication system 5 2002
 
HUGHES ELECTRONICS CORPORATION (1)
5,483,669 Dynamic thresholding for mobile assisted handoff in a digital cellular communication system 38 1993
 
I.C.COM LTD. (1)
6,061,386 Method of chip interleaving in direct sequence spread spectrum communications 7 1997
 
INFINEON TECHNOLOGIES AG (1)
6,301,288 Method of chip interleaving in direct sequence spread spectrum communications 5 2000
 
INTEL MOBILE COMMUNICATIONS GMBH (1)
8,290,460 Methods for measuring received signal strength indication, measurement devices, and radio communication device 0 2009
 
JDS UNIPHASE CORPORATION (1)
6,061,565 Mobile radio systems 69 1997
 
Joe E. Purdie, D.D.S. A Dental Corporation (1)
5,999,816 Method and apparatus for performing mobile assisted hard handoff between communication systems 114 1997
 
LCTL WIRELESS INVESTMENT, LLC (1)
5,570,349 Wireless direct sequence spread spectrum digital cellular telephone system 52 1994
 
LG ELECTRONICS INC. (1)
7,136,366 Method and system for providing inter-frequency handoff in a telephone system 2 2001
 
MOTOROLA, INC. (1)
5,590,172 Method and system for transferring a radiotelephone call from one coverage area to another 31 1996
 
NOKIA MOBILE PHONES INC. (1)
5,774,809 Simplified mobile assisted handoff of signal between cells 65 1996
 
NOKIA SIEMENS NETWORKS OY (1)
6,819,923 Method for communication of neighbor cell information 7 2001
 
OKI TELECOM, A ADIVISION OKI AMERICA, INC. (1)
5,726,982 Artificial window size interrupt reduction system for CDMA receiver 18 1995
 
OMNIPOINT CORPORATION (1)
7,050,799 Wireless local loop with intelligent base station 4 2002
 
OMNIPOINT TECHNOLOGIES, INC. (1)
5,757,847 Method and apparatus for decoding a phase encoded signal 12 1995
 
OPTIS CELLULAR TECHNOLOGY, LLC (1)
6,980,803 Using statistically ascertained position for starting synchronization searcher during diversity handover 5 2001
 
OPTIS WIRELESS TECHNOLOGY, LLC (1)
7,346,126 Method and apparatus for channel estimation using plural channels 2 2001
 
Sharp Corporation (1)
7,715,858 Secondary station and method of operating the station 0 2001
 
SIEMENS ENTERPRISE COMMUNICATIONS GMBH & CO. KG (1)
5,898,924 Method for connection handling in communication systems with wireless signal transmission 3 1995
 
SK TELECOM CO., LTD. (1)
7,761,099 Method for discovering wireless network for inter-system handover, multi-mode terminal unit and inter-working service server using the method 0 2006
 
SONY CORPORATION (1)
7,502,614 Radio communication system, radio communication apparatus and radio communication method, and computer program 7 2003
 
SONY ELECTRONICS INC. (1)
6,356,595 Method and apparatus for decoding continuously coded convolutionally encoded messages 15 1998
 
TELCORDIA TECHNOLOGIES, INC. (1)
6,611,510 Method and system for soft handoff of mobile terminals in IP wireless networks. 19 2001
 
THERMO FUNDING COMPANY LLC (1)
6,661,996 Satellite communication system providing multi-gateway diversity to a mobile user terminal 8 1998
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
6,542,471 Radio communication system for mobile objects and radio communication mobile station used in the system 13 1998
 
TRIMBLE NAVIGATION LIMITED (1)
6,198,930 Automatic cellular phone tracking 44 1997
 
TYCO ELECTRONICS LOGISTICS AG (1)
5,623,484 Method and apparatus for controlling signal quality in a CDMA cellular telecommunications 53 1994
 
VERIZON CORPORATE SERVICES GROUP INC. (1)
7,158,790 Determining service coverage for metropolitan wireless networks 19 2002
 
VERIZON SERVICES CORP. (1)
5,781,541 CDMA system having time-distributed transmission paths for multipath reception 94 1995
 
VIA TELECOM CO., LTD. (1)
7,072,311 Method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system 10 2000
 
VRINGO INFRASTRUCTURE INC. (1)
5,722,074 Soft handoff in a cellular telecommunications system 60 1996
 
WI-LAN INC. (1)
6,175,560 Apparatus and method of establishing and maintaining communication paths in a wireless telecommunications system 17 1998
 
WICOM SOLUTIONS CO., LTD. (1)
5,920,551 Channel structure with burst pilot in reverse link 33 1996
 
XIROM WIRELESS, INC. (1)
5,963,586 Method and apparatus for parallel noncoherent correlation of a spread spectrum signal 11 1995