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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7965672 | Method and apparatus for cell selection in a mobile communication system Disclosed is a method and apparatus for cell selection, which can prevent the occurrence of an error in the cell selection in a mobile communication system supporting the hierarchical cell structure. The method includes: when the number of times of cell reselection ... | 06/21/2011 |
| 7778215 | Digital trunked communication network which supports roaming and method thereof A digital trunked communication network which supports roaming, includes a plurality of trunked communication systems, each of which comprises a base station subsystem and a dispatching subsystem; wherein base station subsystem is used to access various services of ... | 08/17/2010 |
| 7599322 | Method for measuring receive sensitivity of base station having multiple frequency allocations Disclosed is a method for measuring receive sensitivity of a base station in order to test a plurality of FAs with only one test terminal. The method includes the steps of: performing synchronization of a primary FA and detecting a channel list at the test terminal;... | 10/06/2009 |
| 7433661 | Method for improved performance and reduced bandwidth channel state information feedback in communication systems A method of transmitting information over a feed back channel of a communication system that has multiple antenna systems is provided. Long term channel condition information is obtained from received measured and/or calculated channel parameter values. The obtained... | 10/07/2008 |
| 7415033 | Dynamic time division multiplexing circuit without a shadow table In a telecommunication system adapted to exchange n-bit frames according to a dynamic time division multiplexing access method for a maximum of N accessible channels, the use of a shadow time slot assignment table is eliminated by use of a circuit that includes (a) ... | 08/19/2008 |
| 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 correspondence between particular CSC and data frames is facilitated by basing CS... | 04/15/2008 |
| 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), an allocation rules module (470) that is coup... | 04/01/2008 |
| 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 trunk packages. The switchboard is provided with a call control unit.... | 02/05/2008 |
| 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 shared channel (HS-DSCH) having one or more corresponding physical cha... | 01/08/2008 |
| 7274667 | Monitoring and allocating access across a shared communications medium A method of providing network access across a shared communications medium between competing users includes the steps of monitoring network access usage by each user for a past time interval and, based on the monitored network access usage, allocating network access... | 09/25/2007 |
| 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 frames (F) which may contain either data (D) and in-band signaling info... | 09/04/2007 |
| 7242696 | Digital TDMA link with no sync word The portion of TDMA frames otherwise containing the sync word is eliminated for one or more data frames at the end of a TDMA data burst to provided added bandwidth for data payload or for a reduced bandwidth. Once a communication channel has been established and is ... | 07/10/2007 |
| 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 addition, the invention provides a method for automatically determining... | 06/12/2007 |
| 7219367 | Backup communication modes Systems and methods for implementing a communication mode for a communication terminal are provided. An embodiment of a method for implementing a communication mode includes receiving a first type of data over a first type of communication channel, determining that ... | 05/15/2007 |
| 7206592 | System for coupling a multiplicity of RF data collection terminals with host computer means Improved apparatus for a radio communication system having a multiplicity of mobile transceiver units selectively in communication with a plurality of base transceiver units which communicate with one or two host computers for storage and manipulation of data collec... | 04/17/2007 |
| 7171213 | Method for operating in a 800 MHz trunked radio communications system for channels 440 to 559 A receiving device in a trunked radio communications system determines a transmit frequency, wherein the transmit frequency is calculated by subtracting 440 from a voice channel number, multiplying by a channel spacing and adding a base frequency to yield the transm... | 01/30/2007 |
| 7133407 | Data communications system A transmitting side relay device comprises additional information generation means for generating additional information about the characteristics of a data stream, packet generation means for generating a packet by attaching additional information to each transfer ... | 11/07/2006 |
| 7113790 | Method and apparatus for using a traffic channel for communications of control data in a wireless communication system Various method and apparatus provides for a method and apparatus for a communication system to efficiently use the traffic channel resources for communications of control data. A controller receiving a transmission indicator of a control message for transmission fro... | 09/26/2006 |
| 7106819 | Plural subscriber system utilizing synchronized timeslots on a single frequency A wireless digital telephone system containing at least one emulated base station plus one or more subscriber stations, the emulated base station comprising a station similar to the subscriber station but having the capability of initiating a synchronization process... | 09/12/2006 |
| 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 physical channel (CPCH) timeslots, so as to determine whether to reuse... | 08/22/2006 |
| 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 number for the receiving device to utilize for the communication. The ... | 08/01/2006 |
| 7050818 | Location based service request system A wireless phone based system to accommodate users of wireless phones for providing information as to the location of certain services such as gasoline stations, movie theatres, drug stores, etc., includes the utilization of a GPS receiver and a wireless phone, with... | 05/23/2006 |
| 6980522 | Ad-hoc radio communication system In an ad-hoc radio communication system comprising a plurality of stations (100) formed into at least one network (102a,102b), each station (100) is assigned a rank representative of its suitability for performing the role o... | 12/27/2005 |
| 6977917 | Method and apparatus for mapping an IP address to an MSISDN number within a service network A system and method for associating an MSISDN of a mobile terminal with a temporarily assigned IP address is disclosed. A first server located within a wireless communications network generates and transmits a start packet to a service network responsive to an acces... | 12/20/2005 |
| 6975858 | Method and apparatus for reducing signalling load in mobile telecommunications networks In the UMTS, semi-static uplink and downlink connection parameters relating to the frequently-used services of voice, fax and web browsing are intermittently broadcast to mobile user equipment (20) which stores the parameters. When a mobile requests (30 | 12/13/2005 |
| 6950667 | System and method using adaptive antennas to selectively reuse common physical channel timeslots for dedicated channels A method and communication system (e.g., TDD system) that uses adaptive antennas at the base stations to monitor metrics associated with the quality of one or more CPCH timeslots, so as to determine whether to reuse some or all of the CPCH timeslots to transmit the ... | 09/27/2005 |
| 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. Example applications include voice, signaling, E-mail and web applicatio... | 06/21/2005 |
| 6904280 | Communication system with mobile coverage area Systems and methods are disclosed for establishing and utilizing a mobile communication system having a mobile communication coverage area. The mobile communication system includes a plurality of mobile communication devices or units and a mobile base. The mobile ba... | 06/07/2005 |
| 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 transmission protocol. The set of data, includes a time related sequence o... | 12/07/2004 |
| 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 device, for example, a base station, causes an offset (e.g., a time and/... | 08/17/2004 |
| 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 the voltage-controlled oscillator 103, and the frequency offset... | 07/20/2004 |
| 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-way communication between the mobile station units, and the central c... | 05/11/2004 |
| 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 an information storing unit. When transmission requests f... | 05/06/2003 |
| 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 interconnecting the trunked transmission communications systems i... | 03/04/2003 |
| 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 use by wireless terminals wishing to join the network. A variabl... | 01/07/2003 |
| 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 system centrally deploys Base Transceiving System (BTS) eq... | 01/07/2003 |
| 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 of communication channels which are used in accordance with... | 09/03/2002 |
| 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 single wire pair. The terminal block is pivotally mounted to... | 08/20/2002 |
| 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 at three different times from three different antennas. T... | 04/02/2002 |
| 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 is asynchronous with the paging schemes selected for the on... | 08/28/2001 |
