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7359365 Hybrid CDM/TDM signaling for packet acknowledgment method and apparatus  
A common signaling channel (CSC) conveys signaling information units (SIUs) from a base station (BS) to each of a multiplicity (e.g., 1200) of different mobile stations (MSs). Implicit corresponden...
7353036 Push-to-talk reverse channel establishment  
A push-to-talk (PTT) radio resource controller ( 441 ) establishes a “reverse” channel using a forward channel resource request module ( 461 ), a reverse channel resource request module ( 463 )...
7327712 Selection system, its selection method for voice channels, and switchboard for use therein  
A voice channel selection system for use in VoIP communication includes a plurality of VoIP trunk packages and a switchboard for bidirectional connection to the Internet via this plurality of VoIP ...
7317700 Method and apparatus for cell-specific HSDPA parameter configuration and reconfiguration  
A method by which resources of a cell under the supervision of a controlling radio network controller (CRNC) are reserved for providing high speed downlink packet access via a high speed downlink s...
7266097 Communication method and apparatus  
A set of formats and protocols is proposed for a satellite communications system. In these formats, a pilot signal (PS) is inserted after every 25 or 29 data symbols. The formats consist of SCPC fr...
7231211 Apparatus and method for monitoring a trunked radio communications system  
The present invention provides a method and apparatus for monitoring a trunked radio communications system by using some type of radio scanning receiver that is not designed for that purpose. In ad...
7096032 System and method using adaptive antennas to selectively reuse common physical channel timeslots for dedicated channels  
A method and communication system (e.g., a time-division duplex (TDD) system) that uses adaptive antennas at the base stations to monitor metrics associated with the quality of one or more common p...
7085573 Method for operating in a 800 MHz trunked radio communications system for channels 0 to 119  
A receiving device in a trunked radio communications system requests a voice channel for a communication and receives an outbound signaling message on a control channel comprising a voice channel n...
6909722 Method and apparatus for proportionately multiplexing data streams onto one data stream  
A method and system that enables proportionately multiplexing a plurality of data stream into one data stream is disclosed. A mobile station has applications that produce separate data streams. Exa...
6829648 Method and apparatus for preparing media data for transmission  
Methods and apparatuses for processing media data for transmission in a data communication medium. A set of data indicates how to transmit a time related sequence of media data according to a trans...
6778513 Method and apparatus for separting multiple users in a shared-channel communication system  
A method and apparatus for distinguishing between two or more signals, each associated with a particular remote user terminal, in a shared-channel wireless communication system. A communication dev...
6765879 Communications apparatus, frequency control method for communications apparatus, and recording medium  
A communications apparatus and a frequency control method thereof, in that control of a reference frequency (local oscillator frequency) is made by feeding back a frequency offset estimate FOS to t...
6735446 Mobile communication system and a control unit of the system for efficient use of vacant channels in one-way communication  
In a mobile communication system, a central control unit assigns pairs of upstream and downstream channels to mobile station units located in a radio zone of a base station unit to carry out a two-...
6560208 Wireless repeating apparatus  
Wireless repeating apparatus are arranged so that a series of information items transmitted from either a portable wireless information terminal or an information processing apparatus are stored in...
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...
6504834 Wireless network  
A method of operating a wireless network comprising a plurality of wireless terminals and optionally a base station uses a transmission frame ( 300 ) including an association section ( 310 ) for us...
6504831 Optical simulcast network with centralized call processing  
A system for distributing radio frequency signals in a wireless communication network that provides an economical method of establishing and then later enhancing network coverage and capacity. The ...
6445725 Spread spectrum communication apparatus  
A spread spectrum communication apparatus for communicating through a plurality of communication channels corresponding to a plurality of diffusion codes comprises a selector to select the number o...
6438226 XDSL splitter assembly for main distribution frame  
A splitter assembly is provided that comprises a terminal block for mounting to a main distribution frame and a splitter circuit for combining/splitting POTS signals and xDSL signals onto/from a si...
6366568 Transfer station for wireless telephone distribution system with time and space diversity transmission  
A wireless communication system combines time and space diversity to reduce fading and simplify receiver design. In particular, a data packet which carries digital telephone traffic, is transmitted...
6282178 Paging reception assurance in a multiply registered wireless transceiver  
An approach for selecting an asynchronous paging interval involves selecting a set of possible paging schemes for one wireless system; selecting a paging interval for another wireless system that i...
6185196 Method for transmitting data packets according to a packet data service in a cellular mobile radio network provided for voice and data transmission  
In order to transmit data packets for a packet data service in a cellular mobile radio network, in each case one channel (TCH) in the radio transmission system (BSS) of the mobile radio network is ...
6181681 Local area network media access controller layer bridge  
A device, system and method for a LAN is disclosed. The device includes a plurality of ports to connect to units such as host end user units. Each of the ports is connected to arbiter/aggregation d...
6085089 Method and arrangement for setting up a traffic channel connection in a mobile radiotelephone network  
For setting up a traffic channel connection between an originating mobile station and a destination mobile station of a mobile radiotelephone network, the network having at least two base stations,...
5887050 Repeater apparatus having isolation circuit  
A repeater apparatus includes a first trunk circuit for receiving and sending data input from and to a first section of the communication link and a second trunk circuit for receiving and sending d...
5850593 Mobile communication for a mobile station near or outside a service area of a base station  
In a mobile communication network comprising a base station (11) having a service area (13) and a plurality of mobile stations, communication is rendered possible between the base station, with a f...
5848054 Repeater for transmission system for controlling and determining the status of electrical devices from remote locations  
A repeater for use in a two way communication system for retransmitting information between a first device and a second device to help ensure reliable two way communication between the devices, com...
5745482 Repeating device  
In a repeating device for sending chargeable satellite broadcasting received through a BS antenna to a connected cable, a scrambled video signal and an audio signal are separated from each other by...
5717830 Satellite trunked radio service system  
In a mobile communication system, a system for providing communication between multiple users in a closed user group arrangement includes first and second mobile earth terminals (METs) registering ...
5650995 Console dispatch in an extended multisite radio communications network  
In an extended overall radio communications network, one or more dedicated Network Interface Modules (NIMs) are provided in each multisite trunked communications systems to permit the interconnecti...
5481545 Conventional network interface for multisite RF trunking system  
A gateway between a non-trunked ("conventional") RF communication system and digitally trunked RD communication system maps between trunked group IDs and non-trunked subaudible signalling tone freq...
5477539 Narrow band simulcast system having low speed data distribution  
A "narrow band" public service trunking (PST) simulcast radio frequency transmission system having high-speed and low-speed digital data access capabilities in addition to analog voice operates in ...
5475683 Method and apparatus for permitting radio unit roaming between trunked RF transmission sites over a wide area that encompasses plural multisite networks  
Digitally trunked radio transceivers are permitted to roam over an extended coverage area including two or more digitally trunked radio frequency communication networks. Each network includes at le...
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 channe...
5377193 Trunking system access method  
In a communication system, the following describes a method for the communication system to more efficiently process control information when the control channel is temporarily used as a voice chan...
5349584 Method of maintaining control in a trunked communication system  
A master repeater controls a trunked communication system having a number of communication resources. The master repeater determines (201) how many communication resources are available to the mast...
5265093 Hardware interface and protocol for a mobile radio transceiver  
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message pro...
5260943 TDM hand-off technique using time differences  
A subscriber makes its hand-off decision based on time difference measurements between synchronization markers received from adjacent repeaters relative to the synchronization markers received from...
5235598 Method for utilizing a control channel for both data and voice  
In a trunking communication system that is equipped to utilize the control channel as both a voice and control channel, a communication unit can transmit control data to the communication resource ...
5230078 Method for a console to quickly monitor a group  
In a communication system that comprises a plurality of communication groups, a plurality of transceivers, and a plurality of consoles which monitor selected communication groups, a console may qui...
5212724 Processor-to-processor communications protocol for a public service trunking system  
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console ove...
5210746 Communication system network having communication system fallback operation  
In a communication system network that comprises a plurality of communication systems and a processing multiplexer, each of the plurality of communication systems is equipped with fallback operatio...
5200954 Communication link between multisite RF trunked network and an intelligent dispatcher console  
A communication link for a dispatcher console to a multisite network of RF digitally trunked radio site transceivers and other dispatcher consoles. The communication link provides the dispatcher co...
5175727 Communication system network interconnecting a plurality of communication systems  
The present invention discloses a communication system network that comprises a plurality of communication systems and a processing multiplexer. The communication systems, which may be either conve...
5038342 TDM/FDM communication system supporting both TDM and FDM-only communication units  
An RF communications system that can determine when a requesting subscriber unit comprises a TDM capable unit, and when it doesn't. Channel assignments are based upon this determination. The system...
4926495 Computer aided dispatch system  
A computer aided dispatch system is provided for use in a trunked communication system. The system comprises at least a master file node and a plurality of user nodes. The master file node contains...
4903262 Hardware interface and protocol for a mobile radio transceiver  
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message pro...
4870408 Method for dynamically allocating data channels on a trunked communication system  
Disclosed is a method to dynamically allocate a number of data channels on a trunked radio system (100). The data activity is monitored during a predetermined time interval. If activity is above a ...
4864563 Method for establishing and maintaining a nodal network in a communication system  
A method for establishing and maintaining a nodal network in a communication system is described using a network connectivity matrix at each node of the network. The network connectivity matrix has...
4837858 Subscriber unit for a trunked voice/data communication system  
A trunked voice/data subscriber is provided that operates in either a voice mode, or one of three data modes. In a first data mode, the voice/data subscriber monitors the voice control channel to e...

Matches 1 - 50 out of 58 1 2 >