Patents
Sitemap › H04 - Electric communication technique › H04W - Wireless communication networks › H04W 4 - Services or facilities specially adapted for wireless communication networks
Patents for H04W 4 - Services or facilities specially adapted for wireless communication networks (113,132)
11/1991
11/23/1991WO1991018467A1 Cellular phone rental system
11/23/1991CA2083515A1 Cellular telephone system with remote programming, voice responsive registration, and real time billing
11/05/1991US5063588 Communication system providing automatic identification of calling parties
10/1991
10/08/1991US5055851 Vehicle location system
10/02/1991EP0448789A2 Radio system
10/01/1991CA1290022C Two-way radio communications system having selectable operating modes
09/1991
09/25/1991EP0210181B1 Dispatch trunked radio system
09/18/1991EP0446297A1 Two-way radio with voice storage
09/04/1991EP0444479A2 Value-added service for a communication system with wired and/or wireless channels
09/04/1991EP0444100A1 Communication system providing automatic identification of calling parties
09/03/1991US5046085 Interfacing system for an international-type pay-telephone
08/1991
08/13/1991US5040237 Method and apparatus for an alternate home channel for a land mobile transmission trunked communication system
08/13/1991US5040177 Access network for a cordless telephone service
08/06/1991US5038342 TDM/FDM communication system supporting both TDM and FDM-only communication units
07/1991
07/24/1991EP0438137A2 Radio telecommunication apparatus
07/23/1991US5034997 Communication system for data transmission and reception using radio wave and optical transmission of message signals
07/09/1991US5031098 Transaction control system including portable data terminal and mobile customer service station
06/1991
06/26/1991EP0433308A1 Two-way radio communications system having selectable operating modes.
06/25/1991US5027388 Method of selecting the most cost effective cellular service plan provided by cellular telephone resellers to multi-line customers
06/19/1991WO1991009481A1 Quasi-duplex radio system using bidirectional hole extension protocol
06/19/1991CA2063388A1 Quasi-duplex radio system using bi-directional hole extension
06/18/1991US5025254 Communication system with improved resource assignment
06/04/1991US5022024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
05/1991
05/30/1991WO1991007838A1 Remote access telephone control system
05/28/1991US5020132 Processor-to-processor communications protocol for a public service trunking system
05/14/1991US5016269 Method and apparatus for utilizing a cellular telephone in a programmable, intelligent emergency freeway callbox
05/07/1991US5014345 Method for dynamically regrouping subscribers on a communications system
04/1991
04/23/1991CA1283455C Apparatus and method for transmitting digital data over a radio communications channel
02/1991
02/27/1991EP0413759A1 A method and arrangement for channel monitor and control.
02/27/1991CN1049579A Access network for cordless telephone service
02/26/1991WO1991003137A1 Call completion system
02/19/1991US4995095 Method and apparatus for utilizing unpresented communication groups
02/13/1991EP0412769A2 Mobile telephone system having message recording mode of operation during failures
02/06/1991EP0411677A2 Dispatch trunked radio system
01/1991
01/30/1991EP0410251A1 Access network for wireless telephone service
01/23/1991EP0204813B1 Duplex interconnect/dispatch trunked radio system
01/01/1991US4982441 Radio communication system
12/1990
12/18/1990US4979207 Method of processing cellular telephone call detail data for billing multi-line customers for cellular telephone services
12/18/1990US4979204 Radio telephone system having emergency speech control
12/11/1990US4977608 Radio communication system
11/1990
11/13/1990CA1276239C Cellular mobile radio credit card system
10/1990
10/18/1990WO1990012461A1 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
10/03/1990EP0390214A2 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
09/1990
09/18/1990US4958368 Customer activation system
09/12/1990EP0386417A2 Radio network with fixed and mobile stations
08/1990
08/21/1990US4951308 Automated vending of cellular hand-held telephones and cellular telephone services
07/1990
07/25/1990CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
07/10/1990US4941203 Two-way radio communication system having selectable operating modes
06/1990
06/28/1990DE3843870A1 Radio network
06/14/1990WO1990006636A1 Two-way radio with voice storage
05/1990
05/31/1990WO1990006039A1 Communication system providing automatic identification of calling parties
05/09/1990EP0367361A2 Customer activation system
05/08/1990US4924457 Concentrator system with polling-response means for detecting failures to stop tariff charges on locally established intraoffice calls
04/1990
04/30/1990CA2001857A1 Customer activation system
04/19/1990WO1990003899A1 Emergency call system for vehicles
04/12/1990DE3839959A1 Notrufeinrichtung fuer ein fahrzeug Emergency call device for a vehicle
04/10/1990US4916728 Cellular telephone unit with prioritized frequency acquisition
03/1990
03/27/1990US4912705 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
03/22/1990WO1990003068A1 Two-way radio communications system having selectable operating modes
02/1990
02/27/1990US4905234 Apparatus and method for transmitting digital data over a radio communications channel
02/20/1990US4903323 Call box
02/20/1990US4903321 Radio trunking fault detection system
02/20/1990US4903262 Hardware interface and protocol for a mobile radio transceiver
11/1989
11/16/1989WO1989011193A1 High speed data interface for land mobile communication system
11/16/1989WO1989011126A1 A method and arrangement for channel monitor and control
10/1989
10/25/1989EP0338765A2 Radio communication system for data transmission and reception
09/1989
09/13/1989EP0332465A2 Concentrator system with polling-response means for detecting failures to stop tariff charges on locally established intraoffice calls
07/1989
07/18/1989US4850030 Radio communication system for communicating between two stations upon automatic switching to an idle communication channel
06/1989
06/28/1989EP0321672A2 Transmission trunked radio system with voice buffering and off-line dialing
06/13/1989US4839892 Concentrator system capable of completing emergency calls under congested traffic
05/1989
05/30/1989US4835731 Processor-to-processor communications protocol for a public service trunking system
05/24/1989CN1004319B Duplex interconnect / dispatch trunked radio system
04/1989
04/11/1989US4821310 Transmission trunked radio system with voice buffering and off-line dialing
03/1989
03/28/1989US4817126 Call box
03/28/1989US4817089 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
03/01/1989EP0304955A2 Radio concentrator system capable of completing calls under congested traffic
02/1989
02/28/1989CA1250673A1 Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
11/1988
11/29/1988US4788711 Apparatus and method for a cellular freeway emergency telephone service
10/1988
10/11/1988US4777646 Communication system
10/04/1988US4776003 Cellular mobile radio credit card system
05/1988
05/03/1988CA1236165A1 Dispatch trunked radio system
04/1988
04/20/1988EP0264023A2 A cellular mobile radio credit card system
04/05/1988CA1234938A1 Duplex interconnect/dispatch trunked radio system
02/1988
02/09/1988US4724538 Emergency roadside telephone communications system
01/1988
01/12/1988CA1231385A1 Mobile telephone system for automatically paging absent mobile subscriber
11/1987
11/24/1987US4709402 Method of synchronizing radio transmitters for synchronous radio transmission
11/24/1987US4709401 Method of setting radio transmitters for synchronous radio transmission
10/1987
10/19/1987EP0210181A4 Dispatch trunked radio system.
10/06/1987US4698805 Console interface for a trunked radio system
09/1987
09/22/1987CA1227249A1 Mobile radio communication system
09/08/1987US4692945 Dispatch trunked radio system
06/1987
06/23/1987US4675863 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
06/09/1987US4672601 Duplex interconnect/dispatch trunked radio system
04/1987
04/28/1987US4661972 Mobile telephone system for automatically paging absent mobile subscriber
04/14/1987US4658435 Radio trunking system with transceivers and repeaters using special channel acquisition protocol
04/13/1987EP0204813A4 Duplex interconnect/dispatch trunked radio system.
03/1987
03/31/1987CA1219915A1 Wide area coverage radio communications system and method
02/1987
02/04/1987EP0210181A1 Dispatch trunked radio system.
02/03/1987US4640986 Mobile radio communication system
12/1986
12/17/1986EP0204813A1 Duplex interconnect/dispatch trunked radio system.
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