Patents
Patents for H04W 64 - Locating users or terminals for network management purposes, e.g. mobility management (18,913)
11/1994
11/15/1994US5365516 Communication system and method for determining the location of a transponder unit
11/02/1994CN1094557A Improvements in positioning systems
11/01/1994US5361399 Adaptive communication system for transmitting between base stations and portable transceivers via different data rate communication links
10/1994
10/11/1994US5355511 Position monitoring for communicable and uncommunicable mobile stations
09/1994
09/28/1994EP0616742A1 Spatial division multiple access wireless communication systems
09/27/1994US5351194 Apparatus and method for closing flight plans and locating aircraft
08/1994
08/23/1994US5341410 Cellular telephone locator using a mobile data system
08/02/1994US5335246 Pager with reverse paging facility
07/1994
07/12/1994US5329576 Wireless communication zone management system
07/05/1994US5327144 Cellular telephone location system
06/1994
06/29/1994EP0603390A1 System for locating and communicating with mobile vehicles
06/15/1994EP0601293A2 Intelligent position tracking
06/14/1994US5321514 Interactive television and data transmission system
06/08/1994EP0600162A1 Procedure for defining position by means of an asynchronous cellular mobile radio system
06/08/1994CA2106534A1 Intelligent position tracking
06/01/1994EP0598889A1 Voice/data radio communication system
05/1994
05/26/1994WO1994011980A1 Portable communicator
05/26/1994CA2442424A1 Mobile two-way communication system
05/24/1994US5315636 Personal telecommunications system
05/04/1994EP0595786A2 Colocated cellular radiotelephone systems
05/03/1994CA2015237C Multiplex communications network pseudo-synchronisation method
03/1994
03/17/1994WO1994006221A1 Position confirmation system of moving body using radio wave
03/15/1994US5295180 Cellular telephone zone system
03/08/1994US5293645 Apparatus and method for locating mobile and portable radio terminals in a radio network
03/08/1994US5293642 In a cellular communication system
03/08/1994CA1327641C Mobile transmitter/receiver
02/1994
02/23/1994EP0583623A1 Arrangement for and method of locating an object or person within a geographical area, and localization transmitter and receiver suitable for the same
02/23/1994EP0583523A2 Pager with reverse paging facility
02/23/1994EP0583522A2 Remote position determination system
02/22/1994US5289527 Mobile communications device registration method
02/03/1994WO1994003009A1 Cellular telephone locator using a mobile data system
01/1994
01/20/1994WO1994001978A1 System for locating and communicating with mobile vehicles
12/1993
12/23/1993WO1993025052A1 Voice/data radio communication system
12/23/1993CA2114851A1 Adaptive communication system for transmitting voice/data
12/09/1993WO1993024911A1 Vehicle tracking system
12/09/1993CA2137002A1 Vehicle tracking system
11/1993
11/10/1993EP0568824A2 System for marking zones in a cellular service area
10/1993
10/09/1993CA2083791A1 Cellular telephone zone system
08/1993
08/25/1993EP0556575A1 Person location system
08/04/1993EP0510169A4 Dynamic rf communication resource access by roving mobile units
07/1993
07/20/1993US5230081 Method and apparatus for locating which zone and sector of a mobile communication system a mobile station is in
06/1993
06/24/1993WO1993012590A1 Spatial division multiple access wireless communication systems
06/22/1993US5222249 Dynamic rf communication resource access by roving mobile units
06/09/1993CN1073061A Mobile communications device registration method
06/08/1993US5218618 Cellular telephone service using spread spectrum transmission
06/08/1993US5218367 Vehicle tracking system
05/1993
05/25/1993US5214789 Radio channel allocation based on location of mobile users
05/04/1993US5208756 Vehicle locating and navigating system
04/1993
04/14/1993EP0536544A2 Portable telephone system
04/01/1993WO1993006685A1 Mobile communications device registration method
03/1993
03/09/1993US5193216 Detecting out of range in response to a loss of signal and a history of approaching out of range prior to the loss of signal
02/1993
02/17/1993WO1993004453A1 Communication system and method for determining the location of a transponder unit
02/17/1993CA2115251A1 Communication system and method for determining the location of a transponder unit
01/1993
01/05/1993US5177604 Interactive television and data transmission system
12/1992
12/30/1992EP0520194A2 Personal telecommunication system
12/29/1992CA2069727A1 Personal telecommunications system
12/28/1992WO1993000777A1 Method and apparatus for estimating the doppler frequency of a mobile station
12/28/1992CA2089090A1 Method and apparatus for estimating the doppler frequency of a mobile station
10/1992
10/28/1992EP0510169A1 Dynamic rf communication resource access by roving mobile units
10/01/1992WO1992017038A1 Beacon enhanced telecommunications system and method
09/1992
09/02/1992EP0501706A2 Adaptive cellular paging system and object location system
08/1992
08/06/1992WO1992013284A1 Vehicle locating and navigating system
07/1992
07/07/1992US5128925 Process for the pseudo-synchronization of a time multiplexing communication network and uses thereof
06/1992
06/30/1992US5126733 Location information polling in a communication system
06/09/1992US5121126 Beacon enhanced telecommunications system and method
05/1992
05/13/1992EP0484918A2 Improved cellular telephone service using spread spectrum transmission
05/09/1992WO1992009179A1 Dynamic rf communication resource access by roving mobile units
05/05/1992US5111209 Satellite-based position determining system
04/1992
04/02/1992WO1992005672A1 Method of location in a mobile radio system
02/1992
02/12/1992EP0470272A1 Method for locating a mobile transmitter
01/1992
01/26/1992WO1992002105A1 Location determination and handover in mobile radio systems
12/1991
12/12/1991WO1991019367A1 Out of range detector
12/05/1991CA2042275A1 Transmitter location searching system
10/1991
10/16/1991EP0451694A2 Time-multiplex transmission system
10/15/1991US5058200 Transmitter location searching system
10/08/1991US5055851 Vehicle location system
09/1991
09/18/1991EP0446363A1 System for judging a sector in which a mobile station exists
08/1991
08/27/1991CA1288184C Telephone registration and cancellation control in a wide area cordless telephone system
04/1991
04/09/1991CA1282838C Colocated cellular radiotelephone systems
04/04/1991WO1991004616A1 System for judging a sector in which a mobile station exists
11/1990
11/22/1990EP0398773A1 Pseudosynchronisation-method for a time division multiplexed communication network and use of same
06/1990
06/28/1990DE3932029A1 Position recognition device for vehicles in monitor zone - has separate position transmitters received and reradiated by vehicle along with marker
03/1990
03/06/1990US4907290 Mobile transmitter/receiver
02/1990
02/15/1990DE3827352A1 Method for determining the instantaneous location of a mobile radio station
01/1990
01/09/1990US4893327 Colocated cellular radiotelephone systems
11/1989
11/15/1989EP0341738A2 Apparatus for own position-fixing, especially for vehicles
10/1989
10/04/1989EP0335558A2 Radio communication system
07/1989
07/18/1989US4850032 Simulcast data communications system
06/1989
06/21/1989EP0320913A2 A method for locating a mobile station, as well as a mobile station and a base station for carrying out the method
05/1989
05/23/1989US4833702 Telephone registration and cancellation control in a wide area cordless telephone system
01/1989
01/25/1989EP0300721A2 Colocated cellular radiotelephone systems
01/17/1989US4799253 Colocated cellular radiotelephone systems
11/1988
11/23/1988EP0292182A2 Mobile transmitter/receiver
11/17/1988EP0291068A2 Telephone registration and cancellation control in a wide area cordless telephone system
11/17/1988EP0290725A2 Method for approximately locating a mobile radio station
03/1988
03/01/1988US4728959 Determining the position of a mobile radio transmitter station
02/1988
02/11/1988WO1988001061A1 Direction finding localization system
12/1987
12/23/1987EP0250105A1 Radio location and apparatus
10/1987
10/21/1987EP0241565A1 Method for determining the sojourn cell of a mobile station in a mobile radio network
05/1987
05/19/1987US4667202 Mobile radio network