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7373151 Distributed dynamic channel allocation technique for multi-carrier CDMA cellular systems with mobile base stations  
A distributed dynamic channel allocation algorithm for a multi-carrier CDMA cellular system having at least one mobile base station. The distributed dynamic channel allocation algorithm uses...
6618696 Method of testing and simulating communication equipment over multiple transmission channels  
The present invention is a method of simulating the effects of a plurality of channels on a signal that includes the steps of acquiring a state transition matrix for each of said plurality of...
6597927 Narrow beam traffic channel assignment method and apparatus  
Disclosed is an apparatus for reducing the number of control signal channels required in a wireless communication system by using a umbrella control signal to initially communicate with an MS...
6430412 Call handoff  
A system and method for performing call handoff in a mobile communication system. The system is employed on commercial aircraft and enables calls to be transferred between different traffic service...
6317598 Device and method for administering and assigning radio transmission channels in mobile radio networks  
A device for assigning radio transmission channels administers the radio transmission channels within a radio zone and optimizes the utilization of the radio transmission channels. The radio...
EP0990359B1 METHOD AND DEVICE FOR MANAGING AND ALLOCATING RADIO TRANSMISSION CHANNELS IN MOBILE RADIOTELEPHONE SYSTEMS  
6163698 Link setup method for a narrowband cellular communication system  
A method for setting up a link for a call in a narrowband cellular communication system (100) includes, in a selective call radio (106), determining a transmitter identity and a signal quality...
6138024 Dynamic channel selection in a cellular communication system  
A method of selecting allocated communication channels for use by a cellular auxiliary personal communication system (CAPCS) comprising periodically collecting relative signal strength indication...
6104926 Call handoff  
A system and method for performing call handoff in a mobile communication system. The system is employed on commercial aircraft and enables cans to be transferred between different traffic service...
5926757 Mobile telecommunication system base station, mobile terminal  
If, in a mobile telecommunication system comprising at least one mobile terminal, at least one base station and at least one processor device for processing signalling messages, such as an...
5862483 Mobility management method for delivering calls in a microcellular network  
In a method of providing cellular telephone service to a mobile telephone located in an off-load cellular telephone system adjacent to a main cellular telephone system, the mobile telephone is...
EP0734634B1 SIGNALLING MESSAGE SWITCHING IN A CELLULAR MOBILE RADIO COMMUNICATION SYSTEM WITH BASE STATION AND MOBILE TERMINAL THEREFOR  
Abstract not available for EP0734634 Abstract of corresponding document: US5926757 PCT No. PCT/EP94/04133 Sec. 371 Date Jun. 5, 1996 Sec. 102(e) Date Jun. 5, 1996 PCT Filed Dec. 12, 1994 PCT Pub....
5749055 Analog retry  
In a cellular mobile system having both analog and digital traffic channels and including a land system serving a plurality of cells and a plurality of mobile stations capable of using analog and...
EP0528522B1 Digital communication network using radio links  
Abstract of EP0528522 A digital communication network has a plurality of remote terminals (RTs) which communicate with a plurality of base stations (BSs) by radio links operating at a single...
5644621 Point to Multipoint radiotelephone system  
A radiotelephone system comprises plural sub units, and a main unit for communicating with the plural sub units. The main unit of the radiotelephone system comprises a first transmitter for...
5633915 Multilayered arrangement for load sharing in a cellular communication system  
A multiple-layered cellular communication system particularly adapted to mobile phones and LAN type communication is provided with an overlaid arrangement of cell transceivers. By having this...
5627881 Off-load-cellular system for off-loading cellular service from a main cellular system to increase cellular service capacity  
An off-load cellular system controls cellular service between a main cellular system and the off-load cellular system and provides off-load cellular service to a mobile telephone. The off-load...
5566388 RF trunking multisite switch configuration and diagnostics interface  
In a multisite radio frequency (RF) signal transmission system, a multisite switch routes audio and data information throughout the system. This switch has a node through which a system manager and...
5565859 Method of detecting a paging channel in a multi-frequency radio pager network  
In order to detect a paging channel assigned to a pager in a shorter time in a frequency divided pager network system, a plurality of paging channels given priorities in channel searching are...
5546443 Communication management technique for a radiotelephone system including microcells  
In a radiotelephone system, the control channel in all cells in an area can be simulcasted. A microcell base station may be provided with a receiver to listen on the umbrella cell control channel...
5493605 Cordless telephone system adaptive links between base units and handset units  
The present invention eliminates the need for non-audio communications performed between base units and handset units to identify the handset unit existing communication zones, and thereby reduces...
5452290 Look ahead channel switching transceiver  
A transceiver receives channel control commands which communicate predictions of upcoming frequency bands that might be used for communication or which communicate activations of upcoming frequency...
5448621 Dynamic reallocation of spectral capacity in cellular communication systems  
In a cellular communication system where satellite nodes are moving with respect to the earth's surface, frequencies and time-slots are dynamically reallocated between cells in response to demand...
EP0324509B1 Mobile communication system  
Abstract of EP0324509 A mobile communication system wherein a plurality of signposts (5) enable communications among mobile stations and a switching system in a predetermined communicating area,...
5410732 Method and apparatus for decentralizing uplink network control functions and minimizing terminal power level assessment overhead in radio frequency data communications networks  
Methods and apparatus are set forth which enable a radio frequency data communications network (1) to perform decentralized uplink network control functions (decentralized away from the centralized...
5390366 Mobile communication system  
A mobile communication system comprises a plurality of base stations to which a single control channel and a plurality of communication channels are allocated, a single control station connected to...
5257399 Multiple access handling in a cellular communications system  
A method and apparatus for use in a cellular mobile radio telephone system for determining which of one of several mobile generated transmissions received in a mobile switching center, sent from...
5241685 Load sharing control for a mobile cellular radio system  
In a mobile cellular radio system, load balancing is achieved by moving dynamically the borders between any two cells such that an overloaded cell becomes smaller and the neighboring cell larger....
5193209 Mobile telephone system for producing busyness information for speech channels  
On-board equipment for a mobile telephone system has a function of reporting the degree of busyness of message channels available in a service area. While the equipment is in a stand-by condition...
EP0528522A2 Digital communication network using radio links.  
A digital communication network has a plurality of remote terminals (RTs) which communicate with a plurality of base stations (BSs) by radio links operating at a single frequency. Each RT monitors...
EP0519549A2 A method of voting in a radio communication system and a system therefor.  
In order to facilitate voting in a radio communication system comprising a system controller (SC) linked to respective fixedly sited primary stations (PS1,PS2: PS11,PS12) and receiving stations...
5123112 Air-to-ground communication system  
An air-to-ground communications system is described for controlling multiple two way radiotelephone conversations between a large number of aircraft (53) and a network of base stations (51) that...
5123043 Radio communication method and system  
A method and system for radio communication between at least one parent communication unit and a plurality of slave communication units. A slave communication unit transmits an automatic answer...
EP0182027B1 Radiotelephone network  
Abstract of EP0182027 The radiotelephone network covers a district divided into cells, in which mobile radiotelephones are located. Each cell has a fixed radio station, and a plurality of fixed...
4926421 Mobile radio telephone system  
In a mobile radio telephone system having multiple base stations controlled by a single line control unit, all base stations use a single common control channel in addition to their voice channels...
4918746 Communication system with mobile stations  
A communication system including at least one mobile station. The system comprises a transmission line, a control station connected to the transmission line, the mobile station and a plurality of...
EP0324509A2 Mobile communication system.  
A mobile communication system wherein a plurality of signposts (5) enable communications among mobile stations and a switching system in a predetermined communicating area, and are connected...
4736453 Method and apparatus for making frequency channel assignment in a cellular or non-cellular radiotelephone communications system  
A system and method for assigning mobile units to selected channels in a cellular or non-cellular wherein the system includes means for comparing the control signals between each pair of mobiles...
4723266 Cellular communication system sharing control channels between cells to reduce number of control channels  
Unnecessary control channels are eliminated in a mature cellular radio telephone RF communications system by sharing control channel transceivers and control channels between original...
4718081 Method and apparatus for reducing handoff errors in a cellular radio telephone communications system  
Wrong handoffs in a cellular radio telephone RF communications system can be minimized or eliminated without increasing locating receiver equipment requirements, field strength measurement time or...
4696027 Handoff apparatus and method with interference reduction for a radio system  
A two way radio system employing power control of a remote station transmitter to produce a predetermined received signal level at a fixed site after handoff of the remote station from one radio...
4682368 Mobile radio data communication system using a speech recognition technique  
A mobile radio data communication system wherein a fixed unit transmits an operation command code sequence for an instruction to an operator having a portable unit. A speech synthesizer of the...
4682367 Mobile radio communications system with join feature  
Cooperation between two repeater transceivers of a radio trunking system causes a mobile radio transceiver to join or rejoin ongoing communications. To join ongoing communications, a radio...
4677687 Method of establishing communication relay between mobile unit and land site and booster used therefor  
In order to either permit communication to continue or to permit a call to be placed while a mobile unit is located in a zone of weak signal strength such as a tunnel or underground parking, a...
4670906 Data communications system transmitter selection method and apparatus  
A data communications system is described which comprises a general communications controller (GCC), a plurality of channel communications modules (CCM) and associated co-located transmitters and...
4670905 Method and apparatus for coordinating independent communications systems  
A method and apparatus for coordinating the transfer of communications control from one independent radio communications system to another is disclosed. A remote unit which communicates data...
4670899 Load balancing for cellular radiotelephone system  
Balancing of loading of cells in a cellular mobile radio telephone system is performed by periodically determining the channel utilization of each cell, computing a representative voice channel...
4649567 Dispatch overdialing for inter-group and other added calling/called access to communications channels in a trunked radio communications system  
"Dispatch overdialing" permits radio transceivers already communicating via a repeater with other transceivers in a trunked radio communications system to call additional radio transceivers onto...
4628537 System for identifying a responding station for a radio communications system  
A communications system for identifying a responding station called by a communications system caller station over a call channel and a plurality of speech channels. The system transmits...
4608711 Cellular mobile radio hand-off utilizing voice channel  
In a cellular mobile radio-telephone system, a hand-off procedure is implemented by use of idle voice channel transceiver at relay stations of cells contiguous the site of a mobile station. The...
Matches 1 - 50 out of 63 1 2 >