Patents
Sitemap › H04 - Electric communication technique › H04W - Wireless communication networks › H04W 84 - Network topologies
Patents for H04W 84 - Network topologies (50,427)
02/1991
02/06/1991CN1011561B Base station for wireless digital telephone system
01/1991
01/29/1991US4989231 Mobile communication system and its control method
01/29/1991US4989230 Cellular cordless telephone
01/24/1991WO1991001073A1 Cellular radio system
01/23/1991EP0408557A1 Paging system lata switch
01/23/1991EP0204813B1 Duplex interconnect/dispatch trunked radio system
01/16/1991EP0408086A2 Watch pager system
01/16/1991EP0407387A1 Paging system local switch
01/16/1991CN1011276B Trunked communication system for voice and data
01/10/1991WO1991000677A1 Automatic and sustained assocation of users with communications paths
01/09/1991EP0115499B1 Selective call paging and priority signalling system
01/02/1991EP0406012A2 Automatic & sustained association of users with communications paths
01/02/1991EP0404786A1 Paging system for entering pages by local telephone call
01/02/1991EP0404774A1 Paging system hub switch
12/1990
12/27/1990EP0115507B1 General purpose data control system
12/25/1990US4980907 Telecommunication combination comprising a telepoint and a portable radio terminal
12/19/1990EP0403203A2 Communication systems
12/19/1990EP0402389A1 Paging system
12/19/1990EP0402358A1 Paging system sublocal switch
12/16/1990CA2018925A1 Communication systems
12/13/1990WO1990015512A1 Acknowledge back paging system having the capability of matching variable length data messages to pager addresses
12/12/1990EP0401235A1 Paging system with transmission protocol compatible with analog and digital transmitters
12/12/1990EP0401223A1 Paging system with dynamically programmable reception frequencies
12/11/1990US4977399 Mobile radio paging test system
12/04/1990US4975939 Channel changing system
12/01/1990WO1990015488A1 Method of establishing communication between independent communication systems
12/01/1990CA2057911A1 Method of establishing communication between independent communication system
11/1990
11/28/1990EP0399520A2 A radio communication system
11/28/1990EP0398934A1 Acknowledge back pager with frequency control apparatus.
11/28/1990EP0398926A1 Frequency division multiplexed acknowledge back paging system.
11/28/1990EP0398911A1 Trunked communication system with nationwide roaming capability.
11/20/1990US4972460 Automatic equivalent temporary talkgroup assignment in a roaming trunking environment
11/06/1990US4968966 Transmitting message to a paging transceiver
10/1990
10/31/1990EP0394357A1 Acknowledge back pager with apparatus for controlling transmit frequency.
10/31/1990EP0394339A1 Acknowledge back pager with adaptive variable transmitter output power
10/30/1990CA1275746C Subscriber unit for a trunked voice/data communication system
10/18/1990WO1990012469A1 Wireless telephone system with an extension communications unit
10/18/1990WO1990012461A1 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
10/04/1990WO1990011654A1 Paging terminal apparatus with user selectable page forwarding capability and methodology therefor
10/03/1990EP0390214A2 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
09/1990
09/20/1990WO1990010987A2 Energy saving protocol for a communication system
09/20/1990WO1990010922A1 Paging system with improved acknowledge-back capabilities
09/19/1990EP0388034A2 Telephone systems
09/14/1990CA2011150A1 Telephone systems
09/11/1990CA1274009A1 Tdma communication system having common local path medium and local time slot for intraoffice calls
09/04/1990US4955050 System configuration of wireless PBX and communication method therefor
08/1990
08/22/1990EP0383630A1 Radio communication system and its control method
08/21/1990US4951044 Paging terminal apparatus with user selectable page forwarding capability and methodology therefor
08/01/1990EP0380261A2 FDM inbound/TDM outbound communication system
07/1990
07/31/1990US4945355 System for cooperatively reassigning duties in a multiple controller environment
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
07/23/1990CA2006497A1 Fdm inbound/tdm outbound communication system
07/10/1990US4940963 Paging system with improved acknowledge-back capabilities
07/10/1990CA1271548A1 Distributed switching architecture
07/03/1990US4939785 Radio communication network system comprising a connecting equipment unit operable in different modes
07/03/1990US4939746 Trunked radio repeater system
06/1990
06/27/1990EP0374787A2 Radio telephone system in private branch exchange configuration
06/19/1990CA1270525A1 Signalling method for establishing trunked communication
06/14/1990WO1990006636A1 Two-way radio with voice storage
06/13/1990EP0372640A1 Personal paging system with determination of the status of a paging unit and of a user thereof
06/13/1990EP0372633A1 Personal paging system with call-back identification
05/1990
05/15/1990US4926496 Method and apparatus for infrequent radio users to simply obtain emergency assistance
05/15/1990US4926495 Computer aided dispatch system
05/08/1990US4924457 Concentrator system with polling-response means for detecting failures to stop tariff charges on locally established intraoffice calls
05/03/1990WO1990004819A1 A system for cooperatively reassigning duties in a multiple controller environment
05/01/1990US4922517 System for interfacing a standard telephone set with a radio transceiver
04/1990
04/25/1990EP0364447A1 Improved signalling method for establishing trunked communication.
04/19/1990WO1990004314A1 High data rate simulcast communication system
04/18/1990EP0363998A2 Portable communications receiver with improved battery saving function
04/17/1990US4918437 High data rate simulcast communication system
04/17/1990CA1267961A1 Multiple access radio telephone system selectively operating on full-duplex and half-duplex modes
04/17/1990CA1267960A1 Multiple access communication system having loop- check circuitry for switching intraoffice connections
04/04/1990EP0360803A1 Portable communications receiver with separate information presentation means and improved battery saving function.
04/04/1990CN1041051A Method for transmitting data message
04/03/1990US4914649 Multiple frequency message system
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
03/22/1990WO1990003041A1 Multiple frequency message system
03/21/1990EP0358688A1 Method for dynamically allocating data channels on a trunked communication system.
03/21/1990EP0358659A1 Subscriber unit for a trunked voice/data communication system.
03/14/1990EP0226610B1 Installation with portable, wireless telephone sets
03/08/1990WO1990002461A1 Data message waiting
03/08/1990WO1990002459A1 Data capable radio communication console
02/1990
02/27/1990US4905302 Trunked radio repeater system
02/27/1990US4905234 Apparatus and method for transmitting digital data over a radio communications channel
02/22/1990WO1990001855A1 Mobile radio paging test system
02/21/1990EP0354990A2 Method for setting up a communication for a trunked radio network with a plurality of voice channels and a control channel
02/21/1990CN1039943A Communication system having packet structure field
02/20/1990US4903327 Cellular telephone with transmission-on and radio-on timers
02/20/1990US4903321 Radio trunking fault detection system
02/20/1990US4903262 Hardware interface and protocol for a mobile radio transceiver
02/14/1990EP0354396A2 Radio paging system
02/13/1990US4901314 Failsoft radio control console
02/13/1990US4901313 A-point to multi-points communication system
01/1990
01/30/1990US4897835 In a time division multiplexed communication method
01/30/1990CA1265274A1 Radio key telephone system having a common signaling channel
01/24/1990CN1039163A Trunked communication system with nationwide roaming capability
01/17/1990CN1038906A Method of and apparatus for acknow-ledging and partially answering paging signal
01/11/1990WO1990000277A1 Method of and apparatus for acknowledging and partially answering a paging signal
01/09/1990US4893327 Colocated cellular radiotelephone systems
01/02/1990US4891637 Acknowledge back pager with apparatus for controlling transmit frequency
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