Matches 51 - 100 out of 149 < 1 2 3 >
Match Document Document Title
6151310 Dividable transmit antenna array for a cellular base station and associated method  
A time division multiple access base station communicates with a plurality of mobile stations in a cellular communications system using a plurality of time division multiple access (TDMA) time...
6122527 Cellular digital packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
6085092 Method for improving the radio cell illumination in a cellular mobile radio system and apparatus for carrying out the method  
A method for improving the radio cell illumination in a cellular mobile radio system provides that there are a number of neighboring cells adjoining each other and partially overlapping each other,...
6041232 Aggregation of shaped directional receiving antenna array for improved location information  
A micro-diverse directional antenna array positioned proximately upon the boundary of a convex shape whereby the primary attenuation lobes of neighboring antennae overlap. This creates a situation...
6038459 Base station antenna arrangement  
A base station antenna arrangement comprising a plurality of antenna arrays each capable of forming a multiplicity of separate overlapping narrow beams in azimuth, the arrays being positioned such...
6038453 Methodology of reducing areas with multiple dominant pilots by rotating the sectored antenna pointing direction  
A method for reducing multiple dominant pilots in a CDMA communication system comprises determining nulls of a first cell and pointing a sector antenna of a neighboring second cell towards one of...
5983118 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...
5953325 Forward link transmission mode for CDMA cellular communications system using steerable and distributed antennas  
A DS-CDMA cellular system is provided that employs two forward link transmission modes in parallel. A conventional transmission mode broadcasts a pilot channel that can be used by a conventional...
5898382 Shared channel communication system  
A communication system includes a scanning receiver coupled to a first antenna, a plurality of repeaters coupled to a second antenna, wherein each repeater operable on any channel in a band, and a...
5890066 Cellular network having cells which are in a specific circular orientation of sectors  
An improved cellular communication network which is divided into a plurality of cells is provided. Each of the cells including a base station has at least two directional antennae, each of which is...
5887261 Method and apparatus for a radio remote repeater in a digital cellular radio communication system  
A digital cellular radio communication system having a remote repeater is provided. The communication system includes a central communication site which: transmits and receives signals in a first...
5864762 Operating a trunked communication system in transmission and message trunked modes  
A digitally trunked radio repeater system provides substantial improvements in timeliness and reliability. The mobile radio transceivers transmit channel requests on the control channel at 9600...
5859841 Method and apparatus for frequency allocation in a cellular telecommunications network  
A cellular telecommunications method for use in a cellular telecommunications network (2) having at least one cluster (4) of adjoining cells (6), the cells being allocated different transmission...
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...
5832389 Wideband digitization systems and methods for cellular radiotelephones  
A base station for communicating with at least one mobile station in a cellular communications system includes a plurality of receive antennas wherein each receive antenna is oriented to define a...
5818385 Antenna system and method  
The antenna system and method for dynamically controlling radiation patterns provides an assortment of radiation patterns to increase the performance of communication systems, such as trunking...
5812956 Clustered antennas in a cellular communication system and method of deploying the same  
Base site deployment in a cellular communication system takes place by positioning a base site antenna (102) mid block, with the main bore of the antenna (102) pointing parallel to the street (104)...
5806001 Radio base station for offset phase transmission  
A radio base station of a portable telephone system designed so as to establish a service area by transmission of radio waves so that radio communication is performed with a plurality of mobile...
EP0861559A1 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...
5802474 Directional frequency allocation in an N=6 cellular radio system  
The process of the present invention is based on a tri-cellular platform where nine, or a multiple of nine, frequency groups are directionalized and reused in the same direction. Directional...
5745858 Base station transmitter/receiver capable of varying composite directivity of antennas  
In a base station transmitter/receiver of a cellular system, a plurality of antennas are oriented in each sector and radiate radio transmission signals and receive radio reception signals to...
5737706 Power system supporting CDPD operation  
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available...
5722043 Method and apparatus of assigning and sharing channels in a cellular communication system  
A method of assigning and sharing carriers in a cellular communications system having a plurality of cells forming a plurality of cell clusters of size N. Each cell has at least one base station...
5701583 Land-based wireless communications system having a scanned directional antenna  
A radio communication system is disclosed which comprises a base station for transmitting and receiving signals to and from one or more remote stations. The base station is provided with at least...
5678186 Digital microcells for cellular networks  
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...
5649292 Obtaining improved frequency reuse in wireless communication systems  
A technique for allocating frequencies in a cellular communication system. The frequency reuse plan divides all available frequencies into six groups with the frequencies assigned in an ascending...
5613200 Method of allocating radio channels for mobile communication system  
Each of a plurality of base stations in a mobile radio communication system has a plurality of sectoral zones each having a directional antenna of horizontal directivity pattern. Radio channels are...
5603089 Base station antenna arrangement  
A base station antenna arrangement comprising a plurality of antenna arrays each capable of forming a multiplicity of separate overlapping narrow beams in azimuth, the arrays being positioned such...
5603083 Microcell base station antenna pattern for dense urban areas  
A pattern and a method of establishing a pattern of microcell base station antennae in dense urban areas. The base station antennae are each configured to transmit on one of several sets of...
5596333 Method and apparatus for conveying a communication signal between a communication unit and a base site  
A communication system (100) employs a method (600) and apparatus (101) for conveying a communication signal between a communication unit (105) and a base site (101) that services a sectorized...
5590399 Up-link channel assignment scheme for cellular mobile communications systems employing multi-beam antennas with beam selection  
An up-link channel assignment scheme for cellular mobile communications systems employing multibeam antennas with beam selection, in which a channel that is selected from among all variable...
5574788 Trunked radio repeater system  
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
5564121 Microcell layout having directional and omnidirectional antennas defining a rectilinear layout in a building  
A radio communication system is provided wherein radio coverage building blocks are used to provide uniform radio coverage to rectilinear floor layouts of buildings. The building blocks are...
5551060 Structure of cells within a mobile communication system  
A re-use partition of cells in a mobile communication system has an outer cell (30) and an inner cell (20) which is provided in the outer cell (30). An interval of cells using the same channel or...
5548813 Phased array cellular base station and associated methods for enhanced power efficiency  
A base station includes a radio channel generating circuit for generating a plurality of individual radio channel signals each at a different frequency from one another, and a plurality of...
5548807 Mobile communication system comprising base stations each having omnidirectional antenna for reception of interference wave  
A mobile communication system comprises base stations each having sector antennas and an omnidirectional antenna for receiving up-going interference waves on all communication channels previously...
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...
5544222 Cellular digtial packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
5537683 Radio paging system with antenna pattern exhibiting high diversity gain  
A radio paging system includes one or more transmitters (12) for sending radio signals to pagers (14) within a paging service area (10). Receivers (22) are located within the service area to...
5537682 Radio frequency communications system  
An RF communications system for providing wireless telecommunication service to sixteen contiguous geographic sectors or cells. The system includes an antenna array having a plurality of antenna...
5533029 Cellular digital packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
5515378 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...
5504936 Microcells for digital cellular telephone systems  
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...
EP0698976A1 Wireless local area network system  
A wireless local area network system comprises a first transmitter/receiver arrangement (base station) (10) having a plurality of switchable directional antennae (11,12,13,14) orientated in...
5488737 Land-based wireless communications system having a scanned directional antenna  
A radio communication system is disclosed which comprises a base station for transmitting and receiving signals to and from one or more remote stations. The base station is provided with at least...
5485631 Manifold antenna structure for reducing reuse factors  
A system is offered of increasing signal quality within a cellular communication system through the use of directional antennas and random assignment of communication resources.
5437054 Method and apparatus of assigning and sharing channels in a cellular communication system  
A method of assigning and sharing channels in a cellular communications system having a plurality of cells forming a plurality of cell clusters of size N. Each cell has at least one base station...
5432780 High capacity sectorized cellular communication system  
A cellular radiotelephone communication system cell site equipment is provided. The cell site equipment includes a radio frequency transmitter operating as one signal frequency source. In addition,...
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...
5408680 Single channel autonomous digitally trunked RF communications system  
A single channel autonomous trunking ("SCAT") RF repeater transmits and receives on a single duplex RF channel. The repeater operates alternately in a control channel mode and in an assigned...
Matches 51 - 100 out of 149 < 1 2 3 >