Patents
Sitemap › H04 - Electric communication technique › H04W - Wireless communication networks › H04W 84 - Network topologies
Patents for H04W 84 - Network topologies (50,427)
10/1991
10/01/1991US5054109 Trunked radio system having fleet queue alert
10/01/1991US5054042 Device for the setting up and routing of telephone calls between subscribers of a radio network and/or of a wired telephone network
10/01/1991CA1290021C Trunked radio repeater system
09/1991
09/26/1991DE4008790A1 Schaltungsanordnung fuer aus vermittlungsstellen bestehende fernmeldewaehlnetze, vorzugsweise fernsprechwaehlnetze Circuit arrangement for exchange-switched telephone networks from existing fernmeldewaehlnetze, preferably
09/25/1991EP0210181B1 Dispatch trunked radio system
09/24/1991US5051740 Paging terminal
09/24/1991CA1289622C Code division multiplexed acknowledge back paging system
09/20/1991WO1991015087A1 Circuit arrangement for telecommunication switching networks, preferably telephone switching networks, consisting of exchanges
09/20/1991WO1991015071A1 Integrated cellular communications system
09/20/1991CA2078768A1 Circuit arrangement for telecommunication switching networks, preferably telephone switching networks, consisting of exchanges
09/18/1991EP0446318A1 Automatic equivalent temporary talkgroup assignment in a roaming trunking environment.
09/18/1991EP0446297A1 Two-way radio with voice storage
09/17/1991CA1289282C Subscriber-concentrated communication system
09/10/1991US5047764 Paging system with dynamically programmable reception frequencies
09/10/1991US5047763 Selective call system with message rebroadcasting over another selective call system
09/10/1991CA1288822C Radio communication network system comprising a connecting equipment unit operable in different modes
09/10/1991CA1288820C Frequency division multiplexed acknowledge back paging system
09/10/1991CA1288819C Acknowledge back pager with frequency control apparatus
09/06/1991WO1991014278A1 A method and apparatus for automatically executing system reconfigurations
09/04/1991EP0360803A4 Portable communications receiver with separate information presentation means and improved battery saving function
09/03/1991US5045850 Paging system with centralized page source and distributed page sources
08/1991
08/27/1991CA1288184C Telephone registration and cancellation control in a wide area cordless telephone system
08/23/1991WO1991013509A1 Method and system for establishing link with wireless telephone
08/23/1991CA2075279A1 Radio communication system
08/20/1991US5042083 Radio communication system having means for avoiding signal collision
08/17/1991WO1991012670A1 Trunking method and apparatus for establishing communication in a two-way mobile radio system
08/14/1991EP0441370A2 Wide area cordless telephone system capable of receiving incoming group address calls
08/14/1991EP0440681A1 A system for cooperatively reassigning dutis in multiple controller environment.
08/13/1991US5040238 Trunking system communication resource reuse method
08/13/1991US5040237 Method and apparatus for an alternate home channel for a land mobile transmission trunked communication system
08/07/1991EP0440284A2 A system for the transmission of data packets
08/06/1991US5038342 TDM/FDM communication system supporting both TDM and FDM-only communication units
07/1991
07/31/1991EP0438463A1 High data rate simulcast communication system.
07/30/1991CA1287195C Wide area cordless telephone system having means for avoiding double registrations
07/23/1991US5034997 Communication system for data transmission and reception using radio wave and optical transmission of message signals
07/11/1991WO1991010332A1 Paging system
07/10/1991EP0435964A1 Energy saving protocol for a communication system
07/09/1991US5031232 Method and apparatus for providing an operating mode alias to a radio
07/09/1991CA1285994C Acknowledge back pager with apparatus for controlling transmit frequency
07/03/1991EP0435582A2 Supervisory control allocation method and apparatus
06/1991
06/26/1991EP0433314A1 Multiple frequency message system
06/23/1991WO1991010333A1 Radio communication system based on digital localisation points
06/19/1991WO1991009481A1 Quasi-duplex radio system using bidirectional hole extension protocol
06/19/1991EP0433256A2 Telecommunication combination comprising a switched telecommunication network and a portable radio terminal
06/19/1991CA2063388A1 Quasi-duplex radio system using bi-directional hole extension
06/18/1991US5025254 Communication system with improved resource assignment
06/16/1991WO1991009506A1 Telecommunication combination comprising a switched telecommunication network and a portable radio terminal
06/12/1991EP0431453A2 Radio system
06/12/1991EP0431007A1 Data capable radio communication console
06/12/1991EP0430993A1 Data message waiting
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
05/31/1991WO1991008652A1 Satellite based simulcast paging system
05/30/1991WO1991007838A1 Remote access telephone control system
05/29/1991EP0428619A1 Mobile radio paging test system
05/28/1991US5020132 Processor-to-processor communications protocol for a public service trunking system
05/28/1991US5020130 Universal frequency assignment protocol for trunked radio systems
05/16/1991WO1991007065A1 Information network
05/16/1991WO1991007025A1 Satellite communications system
05/16/1991WO1991006933A1 Satellite selective call signalling system
05/07/1991WO1991007024A1 Satellite signalling system having a signal beam with a variable beam area
05/07/1991WO1991007023A1 Satellite signalling system
05/07/1991US5014345 Method for dynamically regrouping subscribers on a communications system
05/07/1991US5014314 Method for developing and transmitting usage context information in an RF communication system
05/07/1991CA2067809A1 Satellite signalling system having a signal beam with a variable beam area
05/07/1991CA2067570A1 Satellite signalling system
05/04/1991WO1991007022A1 Global communication system, receiver and method for operating the same
05/04/1991WO1991007021A1 Global satellite communication system with geographic protocol conversion
05/02/1991WO1991006156A1 Two-way communication system
05/01/1991CN1012551B Trunked communication system with nationwide roaming capability
04/1991
04/24/1991WO1991006190A1 Nation-wide paging with local modes
04/24/1991EP0423200A1 Method of and apparatus for acknowledging and partially answering a paging signal.
04/24/1991CN1050964A Trunking network with automatic roaming without centralized control
04/23/1991US5010317 Satellite based simulcast paging system
04/23/1991CA1283455C Apparatus and method for transmitting digital data over a radio communications channel
04/18/1991WO1991005429A1 Trunking network with automatic roaming without centralized control
04/18/1991WO1990010987A3 Energy saving protocol for a communication system
04/16/1991US5008952 Global satellite communication system with geographic protocol conversion
04/16/1991US5008900 Subscriber unit for wireless digital subscriber communication system
04/10/1991EP0421704A2 Telemetry, tracking and control for satellite cellular communication systems
04/10/1991EP0420843A1 Paging system with commands for changing functionality of a paging receiver
04/10/1991CN1050656A Automatic equivalent temporary talkgroup assignment in roaming trunking environment
04/09/1991CA1282838C Colocated cellular radiotelephone systems
04/09/1991CA1282834C Portable communications receiver with separate information presentation means and improved battery saving function
04/02/1991US5005014 System and method for optimally transmitting acknowledge back responses
04/02/1991CA1282462C Trunked communication system with nationwide roaming capability
03/1991
03/30/1991WO1991005430A1 Automatic equivalent temporary talkgroup assignment in a roaming trunking environment
03/26/1991CA1282117C Adaptive limiter/detector which changes time constant upon detection of dotting pattern
03/21/1991WO1991003900A1 A method and apparatus for processing pages
03/13/1991EP0415979A1 Communication system having a packet structure field.
03/13/1991EP0211849B1 Pager system and communication protocol
03/06/1991EP0415810A1 Radio telephone communication network
02/1991
02/27/1991EP0413759A1 A method and arrangement for channel monitor and control.
02/27/1991CN1049581A Subscriber unit for wireless digital subscriber communication system
02/21/1991WO1991002435A1 Answer-back pager
02/20/1991EP0413369A1 A portable pager
02/19/1991US4995095 Method and apparatus for utilizing unpresented communication groups
02/13/1991EP0412574A2 Antenna for watch pager system
02/13/1991CN1049261A Acknowledge back paging system having capability of matching variable length deta messages to pager addresses
02/07/1991WO1991001615A1 Method and apparatus for automatically transmitting a paging message in an alternate paging system
02/06/1991EP0411677A2 Dispatch trunked radio system
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