Matches 201 - 250 out of 425 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5987305 System and method for automatically setting up a radio link for transmitting data between two or more transmitter/receiver stations  
A system and a method for automatic establishment of a radio link for data transmission between two or more transmitter-receiver stations stores data of the frequency bands and access procedures...
5970417 Method for maintaining a group call  
A method for maintaining a group call in a mobile radio system, and a mobile station in a mobile radio system, wherein the geographical area covered by the system is divided into radio cells. Each...
5963865 Traffic channel assignment in a cellular telephone system using an uplink interference driven frequency packing method  
Each base station in a cellular telephone system includes a signal strength measurement device operable to tune to and make signal strength measurements on not only the frequencies allocated to...
5963848 Method and apparatus for assigning a channel to a mobile unit in a wireless communication system  
A unique method and apparatus determines (310) which channels in a wireless communication system are both authorized for cordless operation and available. A channel is then selectively chosen (328)...
5960354 Multiband mobile telephone system  
A cellular mobile telephone system is provided. The system operates on frequency bands each of which comprises a respective total number of sub-bands. Each sub-band has a different respective...
5956638 Method for unlicensed band port to autonomously determine interference threshold and power level  
Radio ports (RPs) in an unlicensed personal communications system adaptively, autonomously set their interference threshold and/or transmission power levels. This may be done by the RP measuring...
5953661 Method of maximizing spectral efficiency in a cellular communications system  
A system and method for operating a cellular communication system is disclosed wherein frequency reuse of available carrier frequencies is maximized, thereby maximizing system traffic capacity. The...
5930683 Communication system for preventing interference between wireless devices  
A communication system which uses a multi-mode transmitter to communicate in a serial fashion with first and second wireless devices. The system includes a transmitter, a first transmitter control...
5926763 Cellular communication system with voice channel usage biasing  
A cellular communication system (10) includes any number of land stations (12), each of which controls a cell (14). When channels are assigned to cells (14), a figure of merit which predicts...
5920819 Overlay cell type mobile communication system  
When a channel for micro cell is assigned to a mobile station PS1 of a micro cell, one carrier frequency whose reception level is lower than a threshold level is selected from a plurality of up...
5903839 Method and apparatus to provide manual reselection on a digital control channel  
A method for operating a mobile station (10) includes a first step of placing the mobile station in a camping state for receiving a control channel of a communications system. Prior to executing an...
5901357 Frequency allocation for subscribers of multiple telephone systems having frequency sharing  
A portable radiotelephone (101) cooperatively operates with a cordless base station (115) over the local coverage area using cellular frequency channels. Both the portable radiotelephone (101) and...
5898926 Channel switching system for mobile communication  
In a simplified portable telephone system having a small radius of a radio zone, a channel switching failure during high-speed movement or an instantaneous disconnection at the time of switching...
5884181 Interference reduction in shared-frequency wireless communication systems  
An apparatus and method for reducing interference between an uplink transmitter of a space-based wireless communication system and an uplink or downlink receiver of a terrestrial wireless...
5875399 Method and arrangement in an analogue mobile telesystem  
An analogue mobile telesystem has traffic channel cells (C1), each of which includes a base station (A-G). These base stations handle combined control channels (PAC) for paging a mobile station...
5875387 Method and apparatus for receiving a radio signal within a home control channel in a multichannel radio communication system  
In a system controller (102) a quantity of control channels is determined; a portion (344) of a code word (338) is set to identify the quantity of control channels; the code word (358) is...
5867790 Radio communication system with enhanced connection processing  
In a radio communication system, when an interconnection between radio terminal (PS) used for digital cordless telephones is performed, a connection destination terminal is discriminated in...
5867766 Technique for performing an automatic channel search and switch during talk-time in mobile transceivers  
A transceiver system having a base unit and a handset for communicating over a number of communication channels that are automatically switched during talk-time. A...
5862479 Space-based communication system and method with continuous channel reuse maintenance  
The system (10) and method (100) adjust reuse units when nodes (e.g., satellites (20, 22)) move in a communication system (10), such as satellites (20,22) moving in their orbits around the earth in...
5862451 Channel quality management in a cable telephony system  
A method and apparatus in a communication system (100) for allocating and controlling data transmissions to and from communications unit (134) in communications system (100). The communication...
5857143 Channel allocation method used for mobile type communication devices  
In an interference wave detection/study process, counters m i (t j ), n i (t j ) are set by an initial value "zero" to set the detection number of an interference wave of not less than a...
5848358 Intracell handover with antenna arrays  
An intra-cell handover method in a cellular communication system which utilizes spatial information from an antenna array is disclosed. The spatial information is measured with the antenna array. A...
5839074 Process of allocating frequencies to base stations of a mobile radiotelephone network  
In a process of allocating frequencies to base stations of a mobile radiotelephone network, which process is based on input information containing at least the number of frequencies required for...
5839055 Narrow band radio transmitting and receiving apparatus and method  
Between narrow band radio transmitting and receiving apparatuses, method and apparatus for shortening the starting failure time upon start of transmission are disclosed. By start of transmission at...
5835859 Method for frequency allocation and assignment in wireless communication systems  
A single-cell wireless communication system is partitioned into n sectors, to which channels are allocated from two groups of non-adjacent channels. If the available channels are consecutively...
5835849 Cellular mobile radio system comprising sub-cells  
A cellular mobile radio systems includes fixed stations and mobile stations, a radio cell being subdivided into sub-cells and each sub-cell being assigned its own allocation of radio channels. The...
5832368 Base station selection scheme for CDMA cellular system using perch channel and received SIR  
A base station selection scheme for a CDMA cellular system capable of reducing the transmission power of the mobile station and increasing the subscriber capacity, by accounting for the uplink...
5828948 Dynamic allocation of channels in a cellular telephone system  
A cellular communication system has a plurality of cells and a plurality of channels. The plurality of channels includes a plurality of measurable channels for which interference can be measured in...
5826189 Cellular communication system with efficient channel assignments and method therefor  
A cellular communication system (10) forms cells (18) from low earth orbit satellites (12). The system (10) uses an off-line process (24) to identify cells (18) that fall within various reuse...
5822698 Microcell frequency planning  
The system is comprised of a microcellular underlay to increase the coverage of a macrocellular overlay system. The frequencies are assigned to the microcells by interleaved frequency segregation....
5822699 Method and apparatus for maintaining call in a communication system  
A method of maintaining call quality in a communication system by communicating between a base site (101) and a communication unit (113) on a first channel. The communication unit (113) monitors...
5822681 Method for assigning band port channels in an unlicensed personal communications system  
A number of RPs stagger the times in which they begin searching for available channels. In a preferred method, one of a plurality of RPs in a UPCS system is selected to have a first start time. The...
5822224 Load weight monitoring system for dump truck  
The present invention enables a reliable radio communication between a plurality of dump trucks and loaders, improves operability, and can flexibly cope with movement of the dump truck during the...
5809427 Apparatus and method for channel acquisition in a communication system  
An apparatus (101, 110) and method for channel acquisition in a communication system (100) provides for selecting a channel, from a multiplicity of available channels (205), and determining whether...
5809401 Method and apparatus for reducing interference in a radio communication link of a cellular communication system  
A method and apparatus is provided for reducing interference in a radio communication link from a central site (230) to a mobile unit (228) in a cellular communication system. The central site...
5805982 Method and apparatus for measuring idle channel quality in an RF frequency sharing environment  
A method of measuring idle channel quality which includes the steps of performing a first signal quality measurement (200), comparing the measurement to a threshold (202), and keying the channel...
5802446 Method and apparatus for testing a communication channel  
A communication system having a transmitter that supplies test sequences formed from several test frequencies and a receiver having test means for testing the quality of a channel. The test means...
5799241 Radio apparatus  
A radio apparatus using a limited channel scan mode is provided. In the limited channel scan mode, a parent unit scans for transmitting within a limited channel group determined on the basis of the...
5799242 Communication control unit for mobile communication systems and the like, including a channel quality detection unit, a quality decision unit and a control unit  
A communication control unit in accordance with the present invention comprises a channel quality detection unit that includes a differential block for calculating a double differential phase by...
5793842 System and method of call routing and connection in a mobile (remote) radio telephone system  
A system and method for providing radio routing and radio frequency channel assignment in a radio telephone system utilizing signal strength and routing messages as a primary criteria for obtaining...
5784695 Method and apparatus for handover control in a satellite based telecommunications system  
A method and apparatus are provided for controlling mobile and base stations (14 and 16) during satellite (12) based telecommunications to perform scheduled handovers between two communications...
5774799 Automatic frequency control with adjacent channel interference protection  
A robust automatic frequency control (AFC) loop for use in radio frequency systems performs a threshold test on the accumulated error adjustments for controlling a frequency oscillator. Based on...
5771454 Base station allocation method for mobile radio communication system  
A channel assignment method wherein, when cover areas of base stations in a mobile radio communication system of the cellular system hierarchically overlap each other, communication channels are...
5765100 Communication diversity by image reception  
A communication system that provides dual frequency communication using a single superheterodyne receiver that receives both the desired frequency and the image frequency of a transmitted signal....
5757779 Automatic skywave communications system  
A automatic skywave communications system includes a control channel and one or more traffic channels for voice or data communications. The system automatically establishes and maintains traffic...
5754944 Silent link establishment  
A method of synchronizing the frequency and time of commencement of high frequency (HF) radio communication between an initiating station and a receiving station in which transmissions from the...
5754943 Cable loss equalization system used in wireless communication equipment  
In a wireless communication apparatus arranged by an indoor unit, an outdoor unit, and a cable used to connect the indoor unit with the outdoor unit, a gain of an amplifier is automatically set....
5752192 Channel reuse in cellular mobile communication with interference signal levels of different radio channels measured at regular and shorter refresh intervals  
In each cell of a mobile communication system with reuse of a plurality of radio channels by dynamic channel allocation, a base station repeats measuring an interference signal level of each...
5752164 Autonomous remote measurement unit for a personal communications service system  
A Personal Communications Service (PCS) System is described. The frequency control system (30) allows PCS systems to coexist in the same frequency band as Private Operational Fixed Microwave...
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...
Matches 201 - 250 out of 425 < 1 2 3 4 5 6 7 8 9 >