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| Number | Title | Issue Date |
| 7865138 | Method and system for a low-complexity multi-beam repeater Aspects of a method and system for a low-complexity multi-beam repeater may include receiving one or more information signals at one or more receiver antennas, and receiving one or more local oscillator control signals via an out-of-band link. The one or more receiv... | 01/04/2011 |
| 7599660 | Base station apparatus and control method for controlling channel density A base station apparatus is provided for adaptively controlling a maximal accommodation channel number per unit area (for example, the coverage area of a cell or sector) in accordance with a traffic quantity without relying upon detachment of a mobile base station a... | 10/06/2009 |
| 7454167 | Apparatus and method for echo cancellation in a wireless repeater using cross-polarized antenna elements A repeater for re-transmitting uplink and downlink signals in a wireless network. The repeater uses antenna cross-polarization, signal cancellation and digital processing techniques to reduce or eliminate coupling of echo signals between the receive and transmit ant... | 11/18/2008 |
| 7426243 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital c... | 09/16/2008 |
| 7421281 | Methods and apparatus for supporting group communications Group communications methods and apparatus are described. In particular, methods for granting a mobile device access to a communications resource, e.g., the right to transmit data, associated with a group are described. User requests for the communications resource ... | 09/02/2008 |
| 7373155 | Method for positioning mobile station and repeater thereof The present invention relates to a method for positioning a mobile station and a repeater thereof. Said method comprises: the mobile communication network, when receiving a positioning request from a mobile station, instructing repeaters to send auxiliary positionin... | 05/13/2008 |
| 7366294 | Communication system tonal component maintenance techniques An apparatus and method for suppressing noise is presented. The apparatus may utilize a filter bank of bandpass filters to split the input noisy speech-containing signal into separate frequency bands. To determine whether the input signal contains speech, DTMF tones... | 04/29/2008 |
| 7366533 | Methods for providing access to wireless resources in a trunked radio communication system Methods are disclosed for providing requested access, network-initiated access and autonomous access to communication resources (101-105) by wireless communication unit(s) (112, 114), and for controlling the different types of access using acces... | 04/29/2008 |
| 7363007 | Adaptive modulation/demodulation method and radio communications systems Adaptive modulation/demodulation method in a radio communication system is provided. A modulation multi-level number in a transmission device and a demodulation multi-level number in a reception device are judged independently from each other according to a propagat... | 04/22/2008 |
| 7363036 | Procedure for registering a new subscriber in a radio system through routers On registration of a new subscriber in a radio system with a central system and a plurality of subscribers the new subscriber first sends a search telegram to all the subscribers that it can reach in its radio range and selects from the subscribers that respond a fi... | 04/22/2008 |
| 7339955 | TDMA communication method and apparatus using cyclic spreading codes Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread substreams. A common spreading code is generated at the ultra-wideband... | 03/04/2008 |
| 7333826 | Voice hub processing Systems and methods are provided for routing voice communications to groups in a voice communication system using a voice hub system. The voice hub system allows a user to group communication devices into one or more logical networks and/or unit task organizations. ... | 02/19/2008 |
| 7327980 | Radio signal repeater A UMTS 3g repeater and a Multi Sector Directional LMU Antenna Array can be integrated to be deployed inside large structures and large moving vehicles such as ferries and trains. ... | 02/05/2008 |
| 7313363 | Activation method for wireless communication system A method for determining an open or available channel from a plurality of predetermined channels for communication between a portable unit and a mobile repeater unit operating within the same wireless communication system. After an available channel has been selecte... | 12/25/2007 |
| 7283835 | Method of providing extended group call service A method of providing a group call service in a radio network is provided. A BS, which does not cover a GCA but is located in a radio network near to the GCA, generates extended group call service information including information about BSs that cover an NGCA and br... | 10/16/2007 |
| 7269434 | Wireless communication system with group registration function A communication system is provided with a group registration function, which is capable of setting a group mode with the reduced number of operation, and simply selecting one of full duplex communication and half duplex communication by a rider, as needed. When a po... | 09/11/2007 |
| 7269403 | Dual-mode wireless and wired power line communications This invention presents a dual-mode wireless/wired power line communications that is used to carry signals with variable transmission data rates from 31.0 Mbps to 173.6 Mbps over a power line cable. The dual-mode wireless/wired power line communications can be seaml... | 09/11/2007 |
| 7245671 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital c... | 07/17/2007 |
| 7236470 | Tracking multiple interface connections by mobile stations A method and apparatus for communicating between devices is described. In one embodiment, the method comprises allowing a mobile station to have a first connection to a network over a first interface and determining that the mobile station is attempting to have a se... | 06/26/2007 |
| 7224745 | Method and system for power-conserving interference avoidance in communication between a mobile unit and a base unit in a wireless telecommunication system A method for avoiding interference in a wireless telecommunication system is provided. The method includes providing communication between a first and second component at an initial frequency. A plurality of successive line quality indicators is determined at a line... | 05/29/2007 |
| 7187904 | Frequency translating repeater with low cost high performance local oscillator architecture A frequency translating repeater (120) for use in a time division duplex (TDD) radio protocol communications system includes local oscillator (LO) circuits (210, 310, and 410) to facilitate repeating by providing isolation, reduced phase noise, ... | 03/06/2007 |
| 7173981 | Dual layer signal processing in a layered modulation digital signal system Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital co... | 02/06/2007 |
| 7170961 | Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets Various methods and apparatus for frequency-domain estimation of carrier frequency offsets are provided in which the carrier frequency offset estimate is robust against non-white (frequency-dependent) noise. A carrier-specific weighting factor is associated with eac... | 01/30/2007 |
| 7171177 | Communication apparatus and method using human body as medium Provided is to a communication apparatus and method using a human body as a medium, in which secure/normal data signals are transmitted/received to the inside and outside of a human body respectively, through at least two different frequency channels classified acco... | 01/30/2007 |
| 7167079 | Method of setting the output power of a pager to aid in the installation of a wireless system A method of setting up a remotely controlled wireless thermostat system for regulating heating and cooling a building. A radio equipped pager is connected to the programmable controller of the thermostat and a self test is conducted to determine if the system can su... | 01/23/2007 |
| 7162213 | Transmission method, transmitter, reception method, and receiver For the purpose of efficient transmission based on the UWB system, first and second baseband waveforms are generated at a cycle equivalent to an integral multiple of a carrier to have a specified phase difference from each other. The first baseband waveform is multi... | 01/09/2007 |
| 7155179 | Full duplex transceiver having a method for immunizing itself against self-jamming A full-duplex transceiver using a method immunizing itself against self-jamming. The transceiver includes a receiver and a transmitter. The receiver includes a frequency immunization converter and a high pass IF filter. The transmitter transmits a TX signal. The rec... | 12/26/2006 |
| 7151823 | Determining whether a telephony call is permitted based on permission data Apparatus and methods to store permission data relating to security for a system and to receive a request to establish a telephony call. In response to the request, the telephony call is established, and after establishing the telephony call, an indication of a type... | 12/19/2006 |
| 7151946 | Controller for reducing latency in a group communication network A method and apparatus for reducing perceived latency in a group communication network provides for receiving a request from a user of a communication device wishing to initiate a group call, receiving media from the user before completely processing the request, an... | 12/19/2006 |
| 7149522 | Service mobility and recovery in communication networks A method improves mobility and service recovery for a user in a wireless communication network. Service information concerning the user is stored in a registrar. A subscription message is sent from a user terminal to the registrar. A header in the subscription messa... | 12/12/2006 |
| 7142619 | Long subscriber loops using automatic gain control mid-span extender unit Systems and methods are described for long subscriber loops using automatic gain control. A method includes extending a digital subscriber loop including: producing an output signal in a first direction from a variable gain amplifier at a mid-span extender unit resp... | 11/28/2006 |
| 7142825 | Method and apparatus for enabling dual control head operation of a mobile radio transceiver An apparatus and corresponding method for enabling the use of a plurality of control heads for operating a transceiver designed to operate with a single control head via a data bus. An interface module is connected between the transceiver and the plurality of contro... | 11/28/2006 |
| 7133697 | Translation unit for wireless communications system A translation unit for use in a wireless communications system comprises translation circuitry configured to be interfaced between an RF antenna network and a backhaul network. The translation circuitry is operable for translating the frequency of signals directly b... | 11/07/2006 |
| 7133398 | System and method for asynchronous communications employing direct and indirect access protocols A communication access protocol improves the accessibility of devices operating on an asynchronous network (100), while supporting reduced power consumption. The network (100) includes a mediation device (130) for facilitating communications amo... | 11/07/2006 |
| 7133462 | Method and apparatus for determining modulation scheme for retransmission in a communication system A method and apparatus for determining an optimum modulation scheme for a retransmission in a communication system supporting HARQ. When two modulation schemes are available, at an initial transmission, information is modulated in the lower-order modulation scheme i... | 11/07/2006 |
| 7120202 | Wireless communication apparatus In a wireless communication apparatus which has the functions of both ASK modulation and QPSK modulation, which can be manufactured at a low cost, and which is small in size, an output terminal of a QPSK modulator is connected to a carrier wave input terminal of an ... | 10/10/2006 |
| 7107063 | Selective display of display information packets in a packet-based communication medium An apparatus, program product, and method selectively display or render display information from display information packets provided in a digital radio broadcast or via another form of packet-based communication medium based upon local information associated with t... | 09/12/2006 |
| 7103312 | Method and apparatus for band-to-band translation in a wireless communication system A translator for translating RF signals from one wireless frequency band to another wireless frequency band in a wireless communications system including a base station, a remote antenna, and remote customer premises equipment. The base station is an existing legacy... | 09/05/2006 |
| 7088975 | Automatic gain control system and method using multiple local AGC loops A receiver comprises a first Variable Gain Amplifier (VGA) that amplifies an input signal in accordance with a first gain to produce a first amplified signal. The first gain is controlled based on the first amplified signal. The receiver includes a second VGA that p... | 08/08/2006 |
| 7088951 | Receiver, method thereof, program thereof, recording medium recording the program, and communication system The system controller 12 attains program table data from a received electric wave upon turning on the power source. Program table data are rearranged for every ensemble and stored again. The user makes an input operation to set a channel-feed selection which ... | 08/08/2006 |
