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7327249 Barrier operator system having multiple frequency receivers  
A barrier operator system is disclosed that is capable of receiving different wireless signals. The system includes a primary controller that is connected to a first receiver which receives a first...
7003021 System and method for generating signal waveforms in a CDMA cellular telephone system  
A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual in...
6804529 Trunked radio repeater communication system including home channel aliasing and call grouping  
A system for channel assignment in a trunked transmission communication system including a plurality of subscribers. A plurality of subscribers is provided home channel assignment to reduce collisi...
6775549 Method for self-calibration of a wireless communication system  
Self RF engineering is made possible for a wireless communication system by adding to the self-configuration capability the ability to set autonomously the power levels of the system base stations....
6735448 Power management for throughput enhancement in wireless ad-hoc networks  
The present invention relates to power management within the context of wireless ad-hoc networks. More specifically to the effects of using different transmit powers on the average power consumptio...
6611511 Cellular telephone communication system using sector splitting for improved performance  
The invention describes a method and apparatus for apparatus for controlling communications between a mobile cellular telephone and a cell of a cellular telephone network. The apparatus comprises a...
6529486 Trunked radio repeater communication system  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for interco...
6496699 Method for self-calibration of a wireless communication system  
Self RF engineering is made possible for a wireless communication system by adding to the self-configuration capability the ability to set autonomously the power levels of the system base stations....
6473623 Method for self-calibration of a wireless communication system  
Self RF engineering is made possible for a wireless communication system by adding to the self-configuration capability the ability to set autonomously the power levels of the system base stations....
6459704 Method and system for radio-location determination  
A method for prioritizing multiple access to a communication channel for the transmission of packets from a plurality of devices on the communication channel. It comprises the steps of once a packe...
6442397 Method for self-calibration of a wireless communication system  
Self RF engineering is made possible for a wireless communication system by adding to the self-configuration capability the ability to set autonomously the power levels of the system base stations....
6374115 Method and apparatus for trunked radio repeater communications with backwards compatibility  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for interco...
EP0771493B1 CHANNEL HOPPING IN A RADIO COMMUNICATIONS SYSTEM  
Abstract not available for EP0771493 Abstract of corresponding document: US5937002 PCT No. PCT/SE95/00854 Sec. 371 Date Jan. 13, 1997 Sec. 102(e) Date Jan. 13, 1997 PCT Filed Jul. 13, 1995 PCT Pub...
EP0746172B1 Handoff in a cellular commuinication system  
Abstract of EP0746172 A method of handoff for use at base sites (110) of a cellular telephone system for handing off from one of the base sites to another one of the base sites at least one of a p...
6314294 Method for self-calibration of a wireless communication system  
Self RF engineering is made possible for a wireless communication system by adding to the self-configuration capability the ability to set autonomously the power levels of the system base stations....
6195559 Communication system, a primary radio station, a secondary radio station, and a communication method  
A communication system has a primary radio station and a portable radio station. The primary radio station communicates with the portable radio station. The portable radio station is freely three-d...
6167240 System and method relating to cellular communication systems  
A system and a method reduce interference in a cellular communication system including at least one controlling arrangement communicating with a number of base stations, each of which serves a cell...
6137993 Method and apparatus for estimating path loss in a radio communications system  
The present invention relates to a method and to apparatus for estimating path loss in a radio communications system. The path loss of single radio connections are modelled as amplification factors...
5937002 Channel hopping in a radio communication system  
The invention relates to a method and to an arrangement for effecting base orthogonal channel hopping between mobile stations (MS1-MS3) and a base station in a radio communications system. Connecti...
EP0918443A2 Cellular wireless communications system and base station  
A cellular wireless communication system for further improving the quality of communications. The base station (BS11) notifies the communication channel which the mobile station (MS10) is using, to...
5905961 Method and apparatus for managing remote unit increased power transmission during location  
Remote units (113) that require locating are managed by a queue controller (180) such that the number and location of remote units (113) that are transmitting at increased power at any given time i...
5887245 Method and apparatus for regulating transmission power  
In a telecommunications system, a method and system for power regulation compares the received power to a target value at a receiving station to adjust the power of the transmitting station periodi...
5878329 Power control of an integrated cellular communications system  
A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. Two-way adaptive power control and signal qua...
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...
5815799 Priority system for a wide area transmission trunked communication system  
A method and apparatus for providing priority access for users in a transmission trunked communication system, including a plurality of distributive radio network terminal (RNT) switches and a uniq...
5809430 Method and apparatus for base selection in a communication system  
A personal communication system (100) having power control provided by a radio port control unit (122), provides for portable radio controlled optimum base station selection. Multiple base stations...
5799012 System controlled asymmetrical automatic repeat request protocol method  
A two-way wireless selective call communication system (20) using a synchronous time division multiplex communication protocol transmits messages divided into a plurality of data units (120, 126, a...
5754739 Adaptive system and method for choosing a selective call transmitter  
A radio frequency manager (12) for choosing a selective call transmitter (20 or 25) among a plurality of selective call transmitters comprises a memory (13) for storing historical data on messages ...
5736964 Method and apparatus for location finding in a CDMA system  
A method and apparatus for determining the location of a communication unit in a CDMA system includes in a first embodiment, sending a location request via a spread spectrum signal to the subscribe...
5701297 Data over cellular  
There is provided a mechanism for providing data services over a wireless cellular network. It comprises: establishing communications over the cellular network; upon a subscriber designating that i...
5666651 Method and apparatus for scheduling message traffic in a multicell radio communication system  
In a system controller (102) for scheduling message traffic for transmission to a plurality of selective-call radios (106) in a radio communication system (100), a set of interference coefficients ...
5613196 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system  
A land mobile transmission trunked communication system is provided with a unique switching protocol arrangement among repeaters that are networked to one or more external communication networks. T...
EP0746172A2 Handoff in a cellular commuinication system  
A method of handoff for use at base sites (110) of a cellular telephone system for handing off from one of the base sites to another one of the base sites at least one of a plurality of cellular te...
5574973 Method of registering/-reassigning a call in a dual mode communication network  
Registration operates by sensing (106) the availability of a first communication system. A quality factor of a channel of the system is measured (111). A channel of the first system is selected if ...
5542097 Method and system for confirming the identity of a target cell for handoff  
A digital radiocommunication system and method for providing a consistency check to confirm the identity of a candidate cell for handoff of a digital traffic channel are described. Using relative p...
5530918 Method and apparatus for message scheduling in a multi-site data radio communication system  
A system controller (102) is for scheduling outbound signal transmissions in a radio communication system (100). A scheduled memory (414) is for storing a set of messages. A best cell means (430) i...
5530913 Message delivery improvement for data communications system using single frequency reuse networks  
A method of data message delivery for single frequency reuse data communications systems wherein the system after attempting a data message delivery on a reuse path and detecting an absence of a da...
5513246 Radiotelephone locating and handoff using alternative criteria  
In a cellular mobile radiotelephone system having a plurality of cells providing radio coverage by a plurality of base stations and having a plurality of mobile stations, the location of a mobile s...
5465386 Signaling protocol for a distributive wide area transmission trunked communication system  
A land mobile transmission trunked communication system is provided with an enhanced control signal protocol. The land mobile transmission trunked communication system includes a plurality of trans...
5440759 Modular networking switch system for a distributive wide area transmission trunked communication system  
A modular networking switch system for a land mobile transmission trunked communication system provides transmission trunked communications with a plurality of transceivers and networks the plurali...
5430889 Automatic power control system for a mobile radio system  
An automatic power control system for a cellular mobile radio system, comprising: a control center via which a plurality of base stations, each serving a cell, are linked to facilitate mutual commu...
5428818 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 (230...
5410752 Hybrid data communications system and method employing multiple sub-networks  
A method and apparatus for combining multiple MFR subnetworks (15) and SFR subnetworks (17) to provide seamless data communications throughout a geographic area (13) wherein a portable station (61)...
5408683 Method of anticipating a communication unit's location in a networked radio communications system  
A method of tracking subscribers (201, 203) in a networked radio communications system (100, 200). The subscribers (201,203) are able to roam among a plurality of coverage areas (104-106) which are...
EP0438463B1 HIGH DATA RATE SIMULCAST COMMUNICATION SYSTEM  
Abstract not available for EP0438463 Abstract of corresponding document: US4918437 A system for transmitting long text messages includes a plurality of transmission cells defining different geogra...
5404574 Apparatus and method for non-regular channel assignment in wireless communication networks  
A channel assignment system assigns channels to various cells by the optimal partitioning of the available radio frequencies into non-overlapping sets, the optimal grouping of co-user cells, and th...
5390339 Method and apparatus for selecting a serving transceiver  
A radio communication system selects a serving transceiver for a remote unit by generating and using a center of mass location estimation. The radio communication system collects uplink and downlin...
5361402 Test device for analyzing communication channels in a trunked radio system  
A test device (101) for use in a trunked radio system (102) employs a received signal strength indicator (RSSI) detector (120) to analyze transmission parameters. The test device (101 ) includes a ...
5313652 Method and apparatus for providing a communication path using common sites  
A method of collapsing a communication path among at least two communication units (104-107) reduces the number of sites normally required to provide a communication. Each of a plurality of site co...
5307510 Method for determining the degree of coverage in a mobile radio system  
The present invention provides a method for checking the degree of coverage in a mobile radio system. According to the method, field strengths are utilized which have been measured from all base st...

Matches 1 - 50 out of 76 1 2 >