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Match Document Document Title
EP1926336A2 Spatial division multiple access wireless communication systems  
A method and apparatus for increasing the capacity and quality of wireless communication between a plurality of remote users and a base station is disclosed. Using measurements from an array of...
7299071 Downlink broadcasting by sequential transmissions from a communication station having an antenna array  
This invention relates to a method and apparatus for transmitting a downlink signal from a communication station to one or more subscriber units to achieve a desired radiation level over a desired...
7251492 Frequency reuse scheme for downlink power channels in a sectorized network  
The frequency reuse scheme for downlink power channels in a sectorized network assigns transmit power for control channels transmitted by cell blocks in a cell layout such that cell blocks aligned...
RE39677 Local multipoint distribution system  
A local multipoint distribution system having a head end coupled to a plurality of base stations with each base station constituting a cell. Each base station has a plurality of sector beam...
EP0861559B1 MULTICHANNEL RADIO FREQUENCY TRANSMISSION SYSTEM TO DELIVER WIDE BAND DIGITAL DATA INTO INDEPENDENT SECTORIZED SERVICE AREAS  
Abstract not available for EP0861559 Abstract of corresponding document: US5875396 A one-way and two-way multichannel radio frequency transmission system and method employing a sectorized...
7139592 Null deepening for an adaptive antenna based communication station  
A method and apparatus is described for modifying a smart antenna processing strategy determined from a set of signals received at an array of antenna elements of a wireless station, such as a set...
7062294 Downlink transmission in a wireless data communication system having a base station with a smart antenna system  
A method, device, and machine readable medium to communicate from a base station having a smart antenna system to a user terminal. The method includes providing a downlink channel for transmitting...
7035661 Power control with signal quality estimation for smart antenna communication systems  
A method for ongoing power control for a communication station with a multiple antenna array, the power control using a method for signal quality estimation applicable for angle modulated signals....
6985466 Downlink signal processing in CDMA systems utilizing arrays of antennae  
The present invention is a method for operating a base station (BS) for transmitting information to a subscriber unit (SU) in a cellular communication system. The information is included in a...
6982968 Non-directional transmitting from a wireless data base station having a smart antenna system  
A method, communication apparatus, and machine-readable medium to transmit a downlink signal in a substantially non directional manner from a first communication station of a communication system...
6963742 Periodic calibration on a communications channel  
Calibration signals can be sent on a traffic channel without interrupting a connection between two radios. In one embodiment, the present invention includes receiving, at a second radio, a first...
6954470 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a...
6895253 Wireless indoor communications using antenna arrays  
A wireless communication system and method includes antenna arrays at both the transmitter and receiver having a plurality of elements for very high data rate communication. Phased array antennas...
6850774 Portable communications and data terminal operating to optimize receipt of both incoming CDPD and AMPS messages  
A portable radio telephone handset operates as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation, an analog cellular communication mode and...
6842440 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a...
6839573 Apparatus and method for beamforming in a changing-interference environment  
An apparatus and method for adaptively producing transmitted signals and processing received signals in a communication system which includes smart antenna array of antenna elements. When...
6795409 Cooperative polling in a wireless data communication system having smart antenna processing  
A method, communication device, and machine-readable medium. The method includes sending a first poll from a first base station having a smart antenna system to a first user terminal. The first...
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....
6771667 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A subscriber unit synchronizes to a control channel. An assigned frequency and time slot is transmitted on the control channel to the subscriber unit. The subscriber unit is moved from the control...
6748216 Method and apparatus for intelligent microcell and antenna selection in digital cellular telephone systems  
A method and apparatus for controlling communications between a mobile cellular telephone and a cell of a cellular telephone network. The apparatus comprises a serving transceiver for transmitting...
6690747 Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing  
A method for generating a reference signal from a modulated signal transmitted to a communications station that includes an array of antenna elements and spatial processing means including:...
6668161 Determining a spatial signature using a robust calibration signal  
A partial spatial signature can be determined to be used in calibration. In one embodiment, determining the partial spatial signature includes receiving a first segment of a waveform, the first...
6654590 Determining a calibration function using at least one remote terminal  
A calibration function for calibrating a base station can be determined using one or more remote terminals. In one embodiment of the present invention, determining the calibration function includes...
6615047 Radio communications system  
A cell group is formed from three cells, each of which has a site equipped with antennas. The antennas differ from one another in terms of horizontal orientation and cover all horizontal...
6615024 Method and apparatus for determining signatures for calibrating a communication station having an antenna array  
A method and apparatus for estimating the downlink signature for a remote transceiver which is part of a wireless communication system that includes a main transceiver for communicating with the...
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...
6600914 System and method for emergency call channel allocation  
An emergency call recognition system which is activated when an off-hook situation occurs, which recognizes when an emergency number is dialed with or without the presence of a dial tone, and which...
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....
6487414 System and method for frequency planning in wireless communication networks  
A system and method for frequency planning in a wireless communication network area using an impact matrix which relates signal interference impacts between sectors in a network service are for...
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....
6470177 Adaptive sectorization  
The present invention relates generally to the problems associated with sectorization of cells in cellular communications systems, and more particularly to interference between sectors. The...
6463295 Power control with signal quality estimation for smart antenna communication systems  
A method for ongoing power control for a communication station with a multiple antenna array, the power control using a method for signal quality estimation applicable for angle modulated signals....
6459900 Methods of operating arrangements of base transceiver stations in an area-covering network  
An arrangement of an area covering, cellular radio communication network having cell regions which can be contiguously replicated without interference. A central transceiver station is coupled to a...
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....
RE37820 Arrangements of base transceiver stations of an area-covering network  
An arrangement of an area covering, cellular radio communication network having cell regions which can be. contiguously replicated without interference. A central transceiver station is coupled to...
6434406 Antenna system for a cellular telephone network  
A cellular telephone system is described of the type wherein a plurality of contiguous cells, each having an assigned set of identification codes, are arranged with means for maintaining continuous...
6421543 Cellular radiotelephone base stations and methods using selected multiple diversity reception  
A cellular radiotelephone base station communicates with cellular radiotelephones by receiving cellular radiotelephone communications energy from cellular radiotelephones on an antenna array,...
6421542 Frequency reuse in millimeter-wave point-to-multipoint radio systems  
A millimeter-wave point-to-multipoint LMDS radio system for broadband wireless access having frequency reuse that includes a cell area divided into an integer number k sub-sectors of equal angular...
6370135 Continuous CDPD base station and method of facilitating efficient data transfer  
A multi-mode communication system, including controller, base stations and subscriber stations, where the communication system has the capability of operating either in a packet-switched mode or a...
6370129 High-speed data services using multiple transmit antennas  
High-speed wireless data systems and methods are described for simultaneously supporting multiple data users, including flexible mixed-traffic services, using an illustrative CDMA architecture....
6334062 Portable communications and data terminal operating to optimize receipt of both incoming CDPD and AMPS messages  
A portable radio telephone handset operates as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation, an analog cellular communication mode and...
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....
6275704 Multiple access communication system with polarized antennas  
A multiple access communication system comprising a plurality of cells, each cell comprising a plurality of sectors. A base station is located in each cell and has a plurality of antennas. Each...
6226601 Seismic survey system  
A wireless seismic survey system is structured as a hierarchy of cell network layers, each higher level cell network layer covering a bigger area than a lower level cell network layer and receiving...
6212385 Cellular communication system and re-use pattern therefor  
A cellular communication system has a frequency bandwidth arranged into a plurality of frequency channels, and a plurality of neighbouring first (130) and second (132) sites each having sectors...
6212363 Method and apparatus for signalling interference protection in a channel reuse radio network  
There is provided a mechanism for signalling interference protection comprising: transmitting, along with adjacent channel frequencies, an odd/even bit associated with odd/even channels that...
6201801 Polarization diversity phased array cellular base station and associated methods  
A base station includes first and second antenna arrays for receiving first and second rotational polarizations, and a polarization diversity receiver connected to the first and second antenna...
EP1080380A1 SEISMIC SURVEY SYSTEM  
Abstract not available for EP1080380 Abstract of corresponding document: US6226601 A wireless seismic survey system is structured as a hierarchy of cell network layers, each higher level cell...
6198925 Method and apparatus for intelligent microcell and antenna selection in digital cellular telephone systems  
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 serving transceiver for...
6167272 Test transmitter, method and computer for testing a cellular mobile radio network  
It is known to introduce into a cellular mobile radio network (CN) a test transmitter (TS) which transmits a test signal for reception by mobile stations located in the coverage area of the mobile...
Matches 1 - 50 out of 149 1 2 3 >