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Monitoring

Subclass of:

455 - Telecommunications

455007000 - CARRIER WAVE REPEATER OR RELAY SYSTEM (I.E., RETRANSMISSION OF SAME INFORMATION)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
455010000 Fading compensation 13
Entries
DocumentTitleDate
20130029592RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, AND METHOD FOR RECONFIGURING COMMUNICATION PARAMETER - A disclosed high-power base station (01-31-2013
20080261521Monitoring Condition of Network with Distributed Components - In a system having distributed components arranged in a logical ring structure, each component monitors only their respective neighboring component in the structure and the condition of the neighboring component is determined. If a component determines a condition of its neighboring component that corresponds to a predefinable condition, the component informs the other components of the system of the predefined condition of the neighboring component.10-23-2008
20120184206METHOD AND APPARATUS FOR REDUCING INTER-CELL INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for reducing inter-cell interference in a wireless communication system. The method for reducing inter-cell interference in a wireless communication system according to one embodiment of the present invention includes: a step in which a first terminal receives, from a first cell, scheduling information for the transmission of a first signal to a second cell; and a step in which the first terminal transmits the first signal to the second cell on the basis of the scheduling information. The scheduling information is provided by the first cell in the event an uplink or downlink transmission of the first cell is interfered with by an uplink or downlink transmission of the second cell. The first signal indicates a request for reducing the transmitting power of the second cell or of the second terminal served by the second cell.07-19-2012
20120184205STATEFUL PAGING GUARD DEVICES AND METHODS FOR CONTROLLING A STATEFUL PAGING GUARD DEVICE - In an embodiment, a stateful paging guard device is provided. The stateful paging guard device may include: a state determiner configured to determine state information indicating whether a terminal device is in an operation state of reduced energy consumption; a receiver configured to receive data directed to the terminal device; and a relay determiner configured to determine whether the data is to be relayed to the terminal device based on the state information.07-19-2012
20130045674Relay Station, Mobile Station, Wireless Communication System, And Load Distribution Method - A relay station includes a load measuring unit configured to measure a load of the relay station; a load calculating unit configured to calculate, based on the load of the relay station and based on a load of an upstream base station or an upstream relay station directly connected to the relay station, a load reflecting a load of an upstream station; and a reporting unit configured to report the calculated load as load information to a mobile station or a downstream relay station.02-21-2013
20130040558Method and Device for Distinguish Between Relay Types - The embodiments herein relate to a method in a target node (02-14-2013
20120264368MOBILE COMMUNICATION SYSTEM, RELAY STATION, BASE STATION, CONTROL METHOD THEREOF, AND COMPUTER READABLE MEDIUM - A mobile communication system includes a base station and a relay station. The relay station acquires a donor cell list indicating at least one candidate cell that can be used for a backhaul link. The relay station or the base station determine a donor cell used for the backhaul link from the donor cell list based on both first and second cell management information. The first cell management information relates to the at least one candidate cell and originates from the at least one base station. The second cell management information originates from the relay station.10-18-2012
20100105317DATA RECEPTION WITH INTERFERENCE CANCELLATION IN A RELAY COMMUNICATION NETWORK - Techniques for transmitting and receiving data in a relay communication network are described. Stations in the relay network may be grouped into multiple depths. Packets may be transmitted in a pipelined manner, with stations at progressively higher depth sending transmissions of a packet in successive frames. In an aspect, a station may receive data with interference cancellation. The station may obtain a received signal containing transmissions of a first packet from stations at a first depth and transmissions of a second packet from stations at a second depth. The first and second stations may be downstream and upstream stations, respectively, or may be upstream stations at different depths. The station may estimate and cancel interference due to the transmissions of the first packet from the received signal to obtain an interference canceled signal. The station may then process the interference canceled signal for the second packet.04-29-2010
20130035033Relay Nodes - A method of establishing a relay connection between a relay node and a neighbouring base station includes the steps of: changing the mode of operation of a base station so that it is capable of operating as a relay node; and establishing an in-band wireless backhaul relay link between the base station operating as a relay node and the neighbouring base station.02-07-2013
20130052942Method For Relaying Data In A Communication Network - Example embodiments may include a method for transmitting a first transmit signal to a first relay. The first transmit signal may include a first data with a first direction and a second data with a second direction. The method may further include transmitting a second transmit signal to a second relay. The second transmit signal may include a third data with the first direction and a fourth data with the second direction.02-28-2013
20130090055RADIO COMMUNICATION SYSTEM AND CONTROL METHOD OF RADIO RESOURCE ALLOCATION - A communication system includes a plurality of nodes including a base station; at least one terminal; and at least one relay node through which each terminal can be connected to the base station. An entity in a network higher in layer than each relay node configures the relay node to set a target value for a predetermined parameter reflecting a radio link status of the relay node. The relay node monitors the predetermined parameter to notify an upper-layer node of difference information corresponding to a difference between the target value and a monitored parameter value. The upper-layer node controls a link parameter of a radio link connecting the upper-layer node and the relay node depending on the difference information, resulting in efficient radio resource allocation in a relay network with small signaling overhead.04-11-2013
20130072112SYSTEM AND METHOD FOR OPERATING A REPEATER - A method of operating a repeater for wireless communication includes broadcasting, from the repeater, a pilot signal in a service area associated with the repeater. The pilot signal carries a scrambling code that permits mobile terminals to decode information transmitted by the repeater. The method further includes receiving a request to initiate communication from a mobile terminal that has received the pilot signal and, in response to receiving the request, establishing a communication link with the mobile terminal. The method further includes receiving, at a first antenna of the repeater, data transmitted wirelessly by the mobile terminal and transmitting, over a second antenna of the repeater, the received data to a base station.03-21-2013
20130072113POWER CONTROL METHOD IN TWO-WAY RELAY NETWORK - Provided is a method for power control in a two-way relay network. The power control method may maximize a minimum transmission rating and a synthesized transmission rating of the overall system when there are restrictions on the synthesized power of terminals and a repeater in the two-way relay network. The power control method may include determining a power ratio for allocating power to each terminal and a repeater for each subcarrier under restriction on synthesized power of the terminals and the repeater and determining power allocated for each subcarrier according to the determined power ratio.03-21-2013
20130072111SYSTEM AND METHOD FOR DETERMINING REPEATER GAIN - A method for operating a repeater in a wireless communication network includes transmitting a predetermined sequence of bits over a first antenna of a repeater and measuring an attenuation in the transmitted bits as received at a second antenna of the repeater. The method also includes determining a power value for the repeater based on the attenuation. Additionally, the method includes receiving information at a first power level from one of a mobile terminal and a base station and determining, based at least in part on the power value, a second power level at which to transmit the received information. Furthermore, the method includes transmitting the received information at the second power level.03-21-2013
20130059529WIRELESS NETWORK RELAY APPARATUS - A wireless network relay apparatus includes a Layer 2 switch and a line control device as well as wireless/wired line terminating devices performing band limitation associated with an AMR function. It measures traffic passing through each line terminating device in inflow/outflow path directions. Upon detecting a modulation scheme changed due to an AMR function in a wireless area, it may specify a line terminating device so as to read a desired modulation scheme from a transmission source modulation scheme conversion table of the line control device based on traffic. It may change a local modulation scheme with a desired modulation scheme when a difference therebetween is above a predetermined number of stages. By tracking a modulation scheme changed for a transmission destination, it is possible to appropriately change a modulation scheme for a transmission source, thus suppressing traffic without discarding necessary data.03-07-2013
20130065513Frequency Capacity Fill Rate Analyzing System and Method of Automatically Analyzing the Frequency Capacity Fill Rate of Wireless Communication Links - A frequency capacity fill rate analyzing system for analyzing the frequency capacity fill rate of wireless communication links, in particular satellite communication links, includes at least one transmitter and at least one receiver between which the communication link is established, and a spectrum analyzer associated to the at least one receiver. The spectrum analyzer is connected to a central controlling device that is provided with a data processing unit on which an analysis task management software is running, and which is connected to a database in which technical parameters of the communication link are stored. The data processing unit is configured such that the spectrum analyzer automatically analyses the frequency capacity fill rate of radio frequency signals transmitted via the communication link on the basis of an analysis task obtained from the central controlling device.03-14-2013
20090011702WIRELESS TRANSMISSION APPARATUS AND WIRELESS TRANSMISSION METHOD - A wireless transmission apparatus capable of suppressing a reduction in coverage area of a base station apparatus and improving the transmission rate in the coverage area. According to this apparatus, a mobile station (01-08-2009
20110130090RF RELAY OF FULL-DUPLEX AND METHOD FOR REMOVING INTERFERENCE OF EM LEVEL THEREOF - A RF relay of a full-duplex generates a conversion matrix to belong to a null space of a channel matrix of an interference channel, generates a transmitting signal by converting a received signal using the conversion matrix, and then outputs the transmitting signal to a transmitting antenna. Therefore, an interference signal of an electromagnetic wave level (EM level) that can be generated while the transmitting signal passes through the interference channel can be canceled.06-02-2011
20110045766Automatic On-Off Switching Repeater For Mimo Networks - Briefly, in accordance with one or more embodiments, a MIMO repeater turns off one or more transmitters of the MIMO repeater if there is no mobile station in the coverage area of the MIMO repeater to reduce noise enhancement on a MIMO network. If there is a repeater in the coverage of the MIMO repeater, the MIMO repeater turns off or keeps off its transmitters that do not have a sufficient channel quality in a respective antenna path, and turns on its transmitters having a sufficient channel quality in the respective antenna path transmits uplink signals from the mobile station via the turned on transmitters to further reduce noise enhancement by not using transmitters that do not significantly contribute to signal quality.02-24-2011
20120108164RELAY STATION APPARATUS AND RELAY METHOD - To prevent relaying wrong information by determining whether a radio signal is to be relayed in accordance with a function of error detection in the radio signal. A relay station apparatus according to an aspect of the invention is a relay station apparatus which relays a radio signal between a transmission station and a reception station, including: a receiver which is configured to receive the radio signal from the transmission station; and a relay determination section which is configured, in accordance with a function of error detection in the radio signal received by the receiver, to determine whether the signal is to be relayed or not, based on a first channel quality indicating a channel quality from the transmission station to the relay station apparatus.05-03-2012
20110294416SYSTEM FOR POSITIONING A GEOSTATIONARY SATELLITE - A system for positioning a geostationary satellite includes: at least four earth stations each being in a known position and capable of sending to the satellite a signal called an uplink signal, and means for measuring the differences in the arrival times of the uplink signals at the satellite.12-01-2011
20100035541Method of operating relay station in wireless communication system - A method of operating a relay station in a wireless communication system is provided. The method comprises the steps of determining a relay mode and transmitting a signal, received from a source station, to a destination station in the determined relay mode, wherein the relay mode is determined based on at least one of requirements for quality of service (QoS) of traffic, the number of times in which attempts are made to transmit a packet, and an amount of packets stored in a buffer of the relay station.02-11-2010
20090098823COMMUNICATION SYSTEM, RELAY DEVICE, AND RELAY METHOD - A relay device for relaying a packet communication between communication devices; comprising: communication quality parameter conversion means for converting a communication quality parameter described in a received quality information notification packet into a communication quality parameter measured by the relay device from a received data packet.04-16-2009
20100112937DATA TRANSMISSION SYSTEM FOR FORWARDING DATA USING A PLURALITY OF ANTENNAS - A data transmission system transmitting data using a relay is provided. The relay selects a transmission terminal from a plurality of terminals connected to a base station. During a first time slot, the base station transmits base station data to the relay and the transmission terminal transmits terminal data to the relay. The relay transmits the terminal data to the base station and transmits the base station data to the transmission terminal during a second time slot.05-06-2010
20110171901MULTIPLE FEED ANTENNA AND METHODS OF USING SAME - An antenna and method of using the antenna is disclosed, that may include a feed assembly including a plurality of feed horns disposed at a plurality of different respective angles within the antenna; a detection system for tracking a movement of a satellite through a tracking range of the antenna; and a switch for transferring a communication path through a succession of the feed horns based on data obtained by the detection system.07-14-2011
20110201269GAIN MEASUREMENT AND MONITORING FOR WIRELESS COMMUNICATION SYSTEMS - A method of monitoring an element in wireless communication system is provided. An operational noise measurement is obtained by measuring a noise value outside of a bandwidth of a first device, but within a bandwidth of a second, subsequent device. The operational noise measurement is alternatively obtained by tuning an input band of the element to shift the input band partially or completely outside of a bandwidth of a first device to create an open band or by suppressing an input of the antenna and measuring noise within the open bandwidth of the element of the wireless communication network. A stored parameter is retrieved and compared to the measured operational noise. Alternatively, a leakage signal of the element may be received at a signal receiver and compared to a reference. The reference is a function of components of the wireless communication system in a leakage path of the leakage signal.08-18-2011
20100120357TERMINAL MODE ASSIGNMENT FOR A SATELLITE COMMUNICATIONS SYSTEM - Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth and frequencies among different beams. Bandwidth request data may be received and compiled from the terminals. The satellite may be configured with different beam coverage areas, and may dynamically allocate bandwidth and particular frequency channels to different beam coverage areas based on the requests. In each of a series of one or more epochs, and according to the bandwidth requests, there may be allocations among carrier groups, traffic classes, and particular terminals. The setup of slot structure and selection of modes for particular terminals is also addressed.05-13-2010
20100248616COMMUNICATION SYSTEM APPARATUS AND METHOD - A test device includes a microprocessor and a switching network comprising a plurality of coaxial switches. The test device includes a signal booster, an uplink antenna and a downlink antenna, and a diagnostic device. A power source supplies power to the signal booster and the diagnostic device. The microprocessor controls the switching network which, in turn, controls the interconnection of the power source, the signal booster, the uplink and downlink antennas, and the diagnostic device.09-30-2010
20100136900Radio Relay Device and Method - A radio relay method for relaying and transmitting a received radio signal, including receiving the radio signal as a first received signal through a first antenna, outputting a first gain controlled signal which controls gain of the first received signal, transmitting a first relay signal which amplifies the first gain controlled signal, receiving the radio signal as a second received signal through a second antenna, outputting a second gain controlled signal which controls gain of the second received signal, transmitting a second relay signal which amplifies the second gain controlled signal. Father including generating a first wait which is used to remove self interference from the first received signal, based on the first and second gain controlled signals and the first input signal used to control the gain, and removing the self interference from the first received signal based on the first wait.06-03-2010
20100323613COMMUNICATION APPARATUS AND RELAYED COMMUNICATION SYSTEM AND CONTROL METHOD THEREOF - A relayed communication system including a supervising station and a plurality of communication stations, transmits data from the supervising station to the communication stations by relay transmission. Each of the plurality of communication stations determines the quality of communication with the supervising station, and notifies the determined communication quality to the supervising station. If the communication quality is equal to or greater than a predetermined value, the supervising station allocates one or more communication stations as relay stations to respective time slots in descending order of the communication quality, and transmits the allocation result to the plurality of communication stations. As a result, each communication station can perform relayed communication using the time slot that is allocated thereto.12-23-2010
20120196528COMPOSITE REPORTING OF WIRELESS RELAY POWER CAPABILITY - A relay node (08-02-2012
20110269396Method for the Control of a Wireless Communications Link for Mitigating Adjacent Satellite Interference - A method for remotely and dynamically controlling adjacent satellite interference comprising monitoring one or more off-axis signals emitted by one or more remote transmitters; determining whether one or more of the off-axis signals is creating adjacent satellite interference (ASI), off axis emissions and inband interference that is higher than a predetermined level of acceptable interference, and transmitting a control signal to at least one of the one or more remote transmitters in response to the determination that the one or more off-axis signals is creating interference that is higher than the predetermined level of acceptable interference, the control signal initiating an adjustment to one or more transmission parameters of the one or more remote transmitters such that interference resulting from the one or more off-axis signals emitted by the one or more remote transmitters is reduced or eliminated.11-03-2011
20110143655SELF-INTERFERENCE CANCELLATION METHOD AND APPARATUS OF RELAY USING THE SAME FREQUENCY BAND IN OFDM-BASED RADIO COMMUNICATION SYSTEM - Provided is a self-interference cancellation method and apparatus that may remove self-interference occurring when a transmission signal of a transmit antenna is received, directly or via a reflector, by a receive antenna in a relay using the same frequency band in an orthogonal frequency division multiplexing (OFDM)-based radio communication system.06-16-2011
20110143654LINK PERFORMANCE DIFFERENCE METRICS AND LINK ADAPTATION FOR MESH SATELLITE NETWORKS - Systems, devices, and methods are disclosed for determining link performance metrics for satellite communication terminals. Using link performance metrics and link performance difference metrics, signal modulation and coding may be decided. Link performance metrics may be determined for individual terminal uplinks and downlinks. Fixed and dynamic link adaptation mechanisms are also disclosed that utilize link performance metrics and link performance difference metrics determined under clear sky and dynamic conditions.06-16-2011
20130122802ESTIMATION OF REPEATER LOOP DELAY FOR REPEATER GAIN CONTROL - Methods and apparatus for estimating a loop delay value (N05-16-2013
20100261426COMMUNICATION DEVICE AND RELAY DEVICE - A communication device that may select a relay node from a plurality of relay nodes, and be used as a signal receiving node through the selected relay node is provided. Additionally, a relay device that may be used as a relay node to receive and broadcast signals is provided.10-14-2010
20100216394METHOD FOR CONTROLLING OF RADIO RESOURCE AND MOBILE TELECOMMUNICATION SYSTEM FOR THE SAME - A method for measuring a self-interference (SI) which occurs in a relay and controlling radio resources of a base station based on the measured SI, and a mobile telecommunication system using the same. The mobile telecommunication system includes a relay which calculates intensity of SI; and a base station which performs radio resource management based on the calculated SI intensity. The method for measuring SI includes calculating intensity of SI using a relay; and performing radio resource management at a base station based on the calculated SI intensity.08-26-2010
20120196527METHOD AND SYSTEM FOR MANAGING COMMUNICATIONS IN A WIRELESS COMMUNICATION NETWORK - The present invention relates to a method for managing communications in a wireless communications network having a mesh or “relay-based” communication mode operating according to a relay scheme. The network includes network devices defining transmission links between them. The method includes initially detecting a mobile obstacle within the network coverage area; dynamically tracking the detected obstacle by iteratively determining a monitoring area including the detected obstacle; selecting, from the transmission links, a subset of monitoring links belonging at least partly to the monitoring area and monitoring a perturbation level of the selected monitoring links to determine movement of the mobile obstacle in the coverage area; and dynamically adapting the relay scheme of the network based on the belonging or not belonging of the transmission links between network devices to the selected subset.08-02-2012
20090111376APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN A COMMUNICATION SYSTEM - An apparatus and method for transmitting and receiving data in a communication system are provided. In the method, a BS selects a repeater group from among a plurality of repeater groups, for use in transmitting first data to an MS and transmits the first data to the MS according to the number of repeaters of the selected repeater group. The first data is different from data transmitted by the repeaters of the selected repeater group.04-30-2009
20130130618SYSTEM AND METHOD FOR INTEGRALLY COLLECTING RAINFALL ATTENUATION AND RAINFALL INTENSITY DATA IN SATELLITE SYSTEM - A system and method for observing a wireless frequency in a space between planets is provided. A system for integrally collecting rainfall intensity and rainfall attenuation data may include a remote measuring apparatus to measure an amount of a rainfall attenuation of a satellite signal based on a rainfall intensity at a predetermined point, to generate rainfall intensity and rainfall attenuation data based on the amount of the rainfall attenuation measured, and to transmit the generated rainfall intensity and rainfall attenuation data to a satellite relay, and an integrated center system to collect the generated rainfall intensity and rainfall attenuation data from the satellite relay.05-23-2013
20100279603RADIO COMMUNICATION APPARATUS AND RELAY TRANSMISSION METHOD - A relay transmission method for communication between a base station and a mobile station via a relay station while producing a diversity effect even if the relay station detects an error in the relay signal. A decoding section (11-04-2010
20110009056RADIO COMMUNICATION SYSTEMS WITH INTEGRATED LOCATION-BASED MEASUREMENTS FOR DIAGNOSTICS AND PERFORMANCE OPTIMIZATION - A radio communication system includes at least one receive antenna for receiving communication signals, processing circuitry for processing the received communication signals and repeating the signals for further transmission, and at least one transmit antenna for transmitting the repeated signals. The processing circuitry is operable for receiving an input regarding the current geographic location of the communication system. The processing circuitry is further capable of recording measurements and data regarding the operation and use of the radio communication system and its operating environment including where and when the measurements and data were taken. The processing circuitry further provides a user interface and capabilities to analyze and visualize the recorded information to diagnose problems and optimize performance. Additionally, the recorded information can be transmitted to a remote server where can be used to determine optimal operational settings for other radio communication systems when they are operating in the same location where the measurements were taken, and these operational settings can be transmitted to these other radio communications systems prior to their use in these locations.01-13-2011
20110009053Tactical radio relay system - Methods and apparatus for providing a Tactical Radio Relay System. One embodiment of the invention includes a constellation of miniature radio relays. These relays may be deployed on buildings or structures to provide a temporary telecommunications system that is capable of communicating with a base station or with mobile terminals. In an alternative embodiment, the relays include parachutes made from thin film batteries, and may be dropped over a target communications zone from an airborne platform.01-13-2011
20110009054TRANSMIT FREQUENCY PRECORRECTION FOR SATELLITE TERMINALS - A method for determining a frequency correction and a symbol rate correction for transmissions from a user terminal in a satellite communications system comprises determining a frequency of a signal received at the user terminal, and determining a symbol rate of the signal received at the user terminal. The method also comprises computing an error associated with an oscillator at an outdoor unit of the user terminal, and computing an error associated with an oscillator at an indoor unit of the user terminal. The method also comprises computing a transmit frequency correction for the user terminal based on the error of the oscillator at the outdoor unit and the error of the oscillator at the indoor unit, and computing a transmit symbol rate correction for the user terminal based on the error of the oscillator at the indoor unit.01-13-2011
20110009055INTERFERENCE RESISTANT SATELLITE LINK POWER CONTROL USING UPLINK NOISE MEASUREMENTS - A method for determining EIRP of user terminals in a satellite communications system comprises measuring a return uplink thermal noise at one or more frequencies, obtaining a target return uplink signal density relative to thermal noise density, and determining a target signal power at a gateway in the satellite communications system for one or more frequency channels. The target signal power may be based at least in part on the return uplink thermal noise and the target return uplink signal density relative to the thermal noise density. The method also comprises obtaining a message signal power at the gateway of one or more messages from a user terminal, and determining the EIRP of the user terminal based at least in part on a difference between the target signal power and the message signal power.01-13-2011
20110034123System and Method for Identifying the Path or Devices on the Path of a Communication Signal - A system and method of applying a known modification in the form of a distortion to a signal to enable a determination if a signal received by a first node is received directly from a second node or indirectly through a repeater. The repeater receives a primary signal and creates a secondary signal as a function of the primary signal and a known distortion, wherein the known distortion identifies the repeater. The primary signal is transmitted and injected with the secondary signal as the first signal to the primary receiver.02-10-2011
20110130089System and Method for Performing Weighted Processing on Uplink Signal - An uplink signal weighted processing method is disclosed. A first channel impulse response from a Mobile Station (MS) to a relay station, and a second channel impulse response from the relay station to a Base Station (BS) are acquired. A relay weight and a demodulation weight are determined according to the first channel impulse response and the second channel impulse response. The relay weight is sent to the relay station and the demodulation weight is sent to the BS, so as to enable the relay station to perform weighted processing on an MS uplink signal received by the relay station according to the relay weight to obtain an uplink relay weighted signal and to send the uplink relay weighted signal to the BS, and so as to enable the BS to perform demodulation weighted processing on the uplink relay weighted signal received by the BS according to the demodulation weight to obtain an uplink estimation signal corresponding to the MS uplink signal.06-02-2011
20090215389System and method for identifying the path or devices on the path of a communication signal - A system and method of applying a known modification in the form of a distortion to a signal to enable a determination if a signal received by a first node is received directly from a second node or indirectly through a repeater. The repeater receives a primary signal and creates a secondary signal as a function of the primary signal and a known distortion, wherein the known distortion identifies the repeater. The primary signal is transmitted and injected with the secondary signal as the first signal to the primary receiver.08-27-2009
20110177777BASE STATION, REPEATER, AND OPERATING METHOD THEREOF - A base station provides information on a reference time to a repeater. The repeater determines a delay time based on a distance between the base station and the repeater, and determines an elapsed time of a delay time from the reference time as a transmission time. The base station transmits a positioning reference signal at the reference time. The repeater transmits a positioning reference signal at the transmission time.07-21-2011
20110151773RADIO TERMINAL, RELAY STATION, RADIO BASE STATION AND COMMUNICATION METHOD - A relay station that includes a receiving unit acquiring a measurement timing at which a radio terminal measures a reception quality of a radio signal, and a transmitting unit transmitting in said measurement timing a radio signal with which said radio terminal is capable of measuring reception quality.06-23-2011
20110151772APPARATUS FOR MEASURING RADIO RELAY CHANNEL AND METHOD THEREOF - An apparatus and method for measuring radio relay channel are provided capable of easily measuring a radio relay channel on each radio link among a base station (BS), a relay station (RS) and a mobile station (MS) and providing a reliable result of measuring the characteristics of radio relay channel by controlling transmission/reception timing based on variation in operation time among the BS, the RS and the MS.06-23-2011
20100304667BROADCAST MESSAGE TRANSMISSION METHOD OF RELAY STATION IN MULTI-HOP RELAY NETWORK - A broadcast message transmission method of a relay station in a multi-hop relay network, which can be applied to a non-transparent centralized scheduling multi-hop relay network, includes that a base station transmits a message to be broadcasted to the relay station, the relay station returns an acknowledgement header to the base station after it has received the message, the base station transmits a message indicating the bandwidth allocation of the downlink to the relay station periodically after it has received the acknowledgement header for indicating the downlink bandwidth that the base station initiatively allocates to the relay station, and the relay station transmits broadcast messages to a terminal or a lower relay station in the downlink bandwidth.12-02-2010
20110256827Communication System - The present application relates to a wireless communication system and related methods and apparatuses for transmitting a signal from a source apparatus to a destination apparatus, via at least one intermediate apparatus. In particular, the present invention relates to techniques which seek to improve the throughput of data in multi-hop communication systems.10-20-2011
20110151774LOAD STATUS INDICATOR FOR MULTIHOP RELAY SYSTEM USING DISTRIBUTED SCHEDULING - A method includes receiving at a relay node a load status indicator from a subordinate relay node, determining a load status of the relay node and forwarding the received load status indicator to a super-ordinate node if the determined load status does not indicate an overload condition, otherwise if the determined load status does indicate an overload condition sending a load status indicator of the relay node to the superordinate node. Another method includes, in a multihop relay network having a plurality of relay nodes, receiving over a communication link at a network access node a load status indicator from a relay node, the load status indicator identifying a nearest relay node, if any, at which a current load exceeds a threshold; and using the received load status indicator at least when making a network admission decision for a user equipment.06-23-2011
20110151771ISOLATION DISTANCE CALCULATION METHOD AND APPARATUS FOR AVOIDANCE OF INTERFERENCE SIGNAL IN WIRELESS COMMUNICATION REPEATER SYSTEM - Provided is a method and apparatus for calculating an isolation distance that is a distance where an interference phenomenon does not occur between wireless repeater apparatuses. The isolation distance calculating apparatus may include: an interference signal calculator to calculate a magnitude of an interference signal included in a particular band by detecting a signal of the particular band extracted from a received radio signal of a wireless repeater apparatus; and an isolation distance calculator to calculate a necessary isolation distance for cancelling interference between the wireless repeater apparatus and another wireless repeater apparatus, based on a predetermined allowable interference signal level and the magnitude of the interference signal.06-23-2011
20090247069REPEATER AND MOBILE STATION - A repeater amplifies and relays radio waves sent and received between a base station and a mobile station. The repeater includes an evaluation function calculator which, with the base station and one or more other repeaters serving as communication partners, calculates an evaluation function for evaluating the state of communication between the communication partners and the repeaters, for each of the communication partners; and a processing device which automatically determines to which of the communication partners a link is to be made on the basis of the evaluation function.10-01-2009
20120202417Methods for testing multibeam satellite systems using input power telemetry and output noise power - Methods that test multibeam satellite communication systems, including its antennas and transponders. The methods use input power telemetry and output noise power to test satellite transponders and antennas while the satellite is in orbit. One method that tests a satellite receive antenna employs at least two earth stations, one for RF testing and one for telemetry and commanding, with each providing a backup for the other. Other methods may use one or more earth stations to perform testing. Methods are disclosed that generate receive antenna pattern measurements, transmit pattern measurements, input chain frequency response curves, input chain transfer curves, and output chain frequency response curves.08-09-2012
20110053497WIRELESS COMMUNICATION METHOD AND RELAY APPARATUS - A wireless communication method executed by a wireless communication system including a relay apparatus, a first wireless communication apparatus, and a second wireless communication apparatus includes the following operations. Upon receiving a wireless signal from the first wireless communication apparatus, the relay apparatus adds advice information, which indicates that the wireless signal has been relayed, to the received wireless signal. The relay apparatus transmits the wireless signal added the advice information thereto to the second wireless communication apparatus. The second wireless communication apparatus detects the advice information to determine whether the wireless signal has been relayed.03-03-2011
20110053496METHOD OF DETERMINING TRANSMISSION TIMING IN RELAY STATION - A method of determining transmission timing in a relay station is provided. The relay station in a mobile communication system formed of the relay station and a base station generates a processing capability reporting message including information about the processing capabilities in a down link and an up link of the relay station and transmits the processing capability reporting message to the base station.03-03-2011
20100285742GAIN CONTROL METRIC PRUNING IN A WIRELESS REPEATER - A method for controlling gain in a wireless repeater includes computing a gain control metric indicative of a loop gain of the repeater and detecting changes in a signal power of a gain control input signal where the gain control input signal is taken from any point in the feedback loop of the repeater. When a large power swing in the gain control input signal is detected, the method operates to discard at least a portion of each gain control metric measurement for a first duration before continuing with computing the gain control metric. In another embodiment, the method may include discarding samples of the gain control input signal used in computing the gain control metric for a first duration when a large power swing in the gain control input signal is detected.11-11-2010
20100285741GAIN ADJUSTMENT STEPPING CONTROL IN A WIRELESS REPEATER - A method for controlling gain in a wireless repeater includes providing one or more gain control metrics where the gain control metrics is indicative of a loop gain of the repeater; measuring the one or more gain control metrics; and adjusting a variable gain of the repeater using a gain adjustment step size being a function of at least the loop gain of the repeater as measured by the one or more gain control metrics. In another embodiment, the gain control algorithm block is configured to divide the loop gain of the repeater into multiple gain adjustment control zones. The gain adjustment control zones may include a first zone having a loop gain in a stable operating region and a second zone having a loop gain outside the stable operating region.11-11-2010
20100285738SIGNAL BLANKING FOR IMPROVED FREQUENCY DOMAIN CHANNEL ESTIMATION - A wireless repeater includes a channel estimation block to estimate a feedback channel between the antennas of the repeater using frequency domain channel estimation. The repeater includes a pilot signal blanking circuit to blank out a selected number of samples of the pilot signal to improve the accuracy of the channel estimation. In another embodiment, the repeater replaces T samples of the pilot signal with a cyclic prefix.11-11-2010
20100323614Mobile Station Association Procedures with Type II Relays - A relay node including one or more components configured to measure a signal strength of sounding reference signals (SRS) received from a mobile station, and in response to the signal strength being above a predetermined threshold, to transmit a first request to an access node. The first request is for the access node to associate the mobile station with the relay node.12-23-2010
20080311848Configuration of a Repeater - Methods and systems are provided to configure a frequency repeater. The frequency repeater is configured with an identity of a service provider and receives a message that defines a set of frequencies to be repeated, the frequencies are associated with a service provider that matches the preconfigured identity. A digital filter receives an incoming signal from the service provider, and filters and repeats the frequencies defined in the received message. The frequency receiver can also determine a set of frequencies to be filtered and repeated based on a cell search procedure performed with a modem that resides in the repeater. A policy established by the service provider can also be utilized to facilitate defining the set of figures to be repeated. By utilizing a signal quality metric and an isolation metric associated, with the performance of a receive and transmit antenna utilized by the repeater, the set of frequencies to be filtered and repeated can be adapted in real time.12-18-2008
20120302159MEASURING INSTRUMENT AND A MEASURING METHOD FOR STATIONARY TESTING OF MOBILE-RADIO RELAY STATIONS - A measuring instrument for testing mobile-radio relay stations provides at least one first measuring device and a receiver device. The first measuring device generates a first signal and transmits it either directly or via at least one further device to a relay station under test. The receiver device receives from the relay station under test a second signal derived from the first signal. The first measuring device compares the first signal and at least one signal derived from the second signal.11-29-2012
20110111693RADIO COMMUNICATION BASE STATION DEVICE, RADIO COMMUNICATION RELAY STATION DEVICE, RADIO COMMUNICATION TERMINAL DEVICE, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD - It is possible to provide a radio communication base station device, a radio communication relay station device, a radio communication terminal device, a radio communication system, and a radio communication method which can minimize a delay and effectively use resources. When a terminal starts an uplink communication with a base station via a repeater, [ST05-12-2011
20120040607METHOD FOR RELAYING DATA IN MULTI-HOP CELLULAR SYSTEM - Disclosed is a method for relaying data in a multi-hop cellular system, the method including receiving by a terminal from a base station a notification as to whether the terminal is decided as a candidate for a relay, deciding by the terminal whether to be a representative candidate terminal for the relay according to a channel state with the other terminals within a coverage of the base station if the terminal is decided as the candidate for the relay, sending by the terminal to the base station a notification if the terminal is decided as the representative candidate terminal, and relaying data received from the other terminals to calculate relay probability terminals to the base station if the terminal is notified from the base station as to that the terminal is finally decided as the relay.02-16-2012
20110171902RELAY DEVICE AND RELAY METHOD - A relay device that monitors and controls common public radio interface (CPRI) links that are links using CPRIs functioning as interfaces for connecting multiple relay devices included in a radio base station detects a disconnected CPRI link by monitoring, via the CPRI links, relay information containing communication data and control data. The relay device distributes a control content, such as a forced link disconnection that forcibly disconnect a CPRI link or no-transmission that stops the transmission of the communication data, with respect to each CPRI link in accordance with a connecting location of the CPRI link in which a link disconnection is detected. The relay device monitors and controls each CPRI link.07-14-2011
20120003926TRANSCEIVER AND A REPEATER - The invention discloses a transceiver (01-05-2012
20120015603METHOD IN A WIRELESS REPEATER EMPLOYING AN ANTENNA ARRAY INCLUDING VERTICAL AND HORIZONTAL FEEDS FOR INTERFERENCE REDUCTION - An echo cancellation wireless repeater with first and second antenna arrays having vertical and horizontal feed antenna elements selects a combination of antenna elements for reception and transmission to reduce interference and improve the quality of signal reception. In one embodiment, the antenna elements are switchably connected to transceiver circuits and a combination of antenna elements is selected based on the best desired performance result. In another embodiment, the antenna elements are each connected to its own transceiver circuit and the echo cancellation repeater performs beamforming in baseband to select a combination of antenna elements.01-19-2012
20120064822System and Method for Identifying the Path or Devices on the Path of a Communication Signal - A system and method of applying a known modification in the form of a distortion to a signal to enable a determination if a signal received by a first node is received directly from a second node or indirectly through a repeater. The repeater receives a primary signal and creates a secondary signal as a function of the primary signal and a known distortion, wherein the known distortion identifies the repeater. The primary signal is transmitted and injected with the secondary signal as the first signal to the primary receiver.03-15-2012
20120156986Method and System for Controlling a Communications Carrier's Power Spectral Density (PSD) Using Spread Spectrum for Matched Spectral Allocation - A method of reducing adjacent satellite interference, the method comprising monitoring, by a processor, a power spectral density (PSD) of a signal transmitted by a remote transmitter, determining, by the processor, that the PSD of the signal transmitted by the remote transmitter is above a predetermined level, and reducing the PSD of the signal transmitted by the remote transmitter by adjusting at least one of a spread spectrum spreading factor, a power level, a modulation factor, and a forward error correction (FEC) rate using a modulator while maintaining a constant spectral allocation and center frequency of the signal.06-21-2012
20090130975RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. In this mobile communication system, when S05-21-2009
20120129447BASE STATION APPARATUS, DATA PROCESSING APPARATUS AND MOBILE COMMUNICATION SYSTEM - A base station apparatus includes a relay unit that relays communication data transmitted and received between a user terminal wirelessly connected to the base station apparatus itself, and a server apparatus connected to the base station apparatus itself through a public network; an extraction unit that extracts communication content information indicating content of communication between the user terminal and the server apparatus, from the communication data relayed by this relay unit; a condition obtaining unit that obtains a filtering condition for the user terminal; an analysis unit that filters a plurality of pieces of the communication content information extracted by the extraction unit, according to the filtering condition obtained by the condition obtaining unit; and a notification unit that notifies a wireless carrier network of communication content information obtained by the analysis unit applying the filtering condition.05-24-2012
20120214407RADIO COMMUNICATION SYSTEM, TRANSMITTING APPARATUS, RECEIVING APPARATUS, RECEIVING METHOD AND TRANSMITTING METHOD - A radio communication system whereby a range is enabled and communication control and quality can be ideally maintained even if the communication distance changes. The transmitting apparatus has a transmitting unit that repeatedly transmits one data packet; a receiving unit that repeatedly receives a response packet; an integrating unit that integrates a repeatedly received response packet; and a determining unit that determines, by use of a result of the integration, whether the received response packet is correct. The receiving apparatus has a receiving unit that repeatedly receives a data packet; an integrating unit that integrates a repeatedly received data packet; a determining unit that determines, by use of a result of the integration, whether the received data packet is correct; and a transmitting unit that repeatedly transmits the response packet when determination is made that the received data packet is correct.08-23-2012
20100273416Apparatus and Method of Accessing to Network in Wireless Communication System - A method and apparatus of accessing to a network node in a wireless communication system is provided. A relay node (RN) determines whether an access to a network node is allowable. The RN attempts to access to the network node if it is determined that the access to the network node is allowable. Service delay due to access failure can be prevented.10-28-2010
20100009624METHOD OF PERFORMING RANGING THROUGH RELAY STATION AND SUPPORTING THEREOF - A method of performing ranging through a relay station (RS) and supporting thereof is disclosed. If ranging is performed in a system which performs communication between a mobile station and a base station through relay of a relay station, the ranging is performed under the leading of the relay station. In other words, if the relay station determines whether ranging between the mobile station and the relay station is required and also determines transmission parameter adjustment values and reports the determined result to the base station, the base station performs the ranging in such a manner that it prepares a message suitable for a specific format and forwards the message to the mobile station through the relay station.01-14-2010
20100285740STABILITY INDICATOR FOR A WIRELESS REPEATER - A method for monitoring feedback loop stability in a wireless repeater includes measuring a gain control metric in the feedback loop of the repeater periodically for a given time period where the gain control metric is indicative of a loop gain of the feedback loop of the repeater; and monitoring the magnitude of the gain control metric to determine the stability of the feedback loop of the repeater. In operation, a large magnitude of the gain control metric indicates instability in the feedback loop of the repeater.11-11-2010
20120083202BASE STATION, RELAY STATION, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD - A base station includes a selector that based on wireless communication states with each mobile station, selects a mobile station for which amplification is to be performed at a relay station; and a reporter that reports information related to the mobile station selected by the selector.04-05-2012
20120083201System and Method for Distributed Power Control in a Communications System - An embodiment method for power control in a multi-hop communications system includes transmitting a power usage pattern for each relay node in a subset of relay nodes served by a communications controller, where the power usage pattern specifies transmit power levels for the relay node while the relay node is operating in a power control mode. The method also includes receiving channel measurements of access links between the relay nodes in the subset of relay nodes and subscriber equipment served by the relay nodes, determining backhaul link transmit power levels and access link transmit power levels based on the channel measurements of access links and channel measurements of backhaul links between the communications controller and the relay nodes, and transmitting the access link power levels to the subset of relay nodes.04-05-2012
20090017752POWER BALANCING IN A COOPERATIVE COMMUNICATION NETWORK - A method of adjusting transmission power for data communicated in a mobile communication system, wherein data is transmitted from a source station to a destination station over a first route and a second route. The method comprises receiving a first transmission power control signal; wherein a destination station generates a second transmission power control signal, in response to receiving a quality measurement signal from the relay station for data communicated to the destination station over a combination of the first route and the second route; and adjusting data transmission power according to the first transmission power control signal.01-15-2009
20100311322 MEASURE METHOD, A REPEATER AND A BASE STATION IN THE PROCESS OF CELL HANDOFF - The present invention provides a measurement method in a cell handover procedure, comprising: A. after network measurement is triggered, a base station schedules resources, which are needed for transmitting uplink data, for a user terminal; and B. the base station and relay stations measure relevant data transmitted from the user terminal on the resources scheduled by the base station, and the relay stations report the detection information of the uplink signal derived from the measurement to the base station. A relay station and a base station for realizing cell handover are also provided. The present invention can realize that during measuring the quality of the signal from a user terminal and a network side, the network performs the measurement, and selects a target node to which the user terminal will handover according to the result of the measurement.12-09-2010
20110003545Relay Node Connection Management - Providing connections to terminals in an access node of a first network. A message is received in the access node from a terminal, the message including capability information of the terminal. The terminal is identified in the access node on the basis of the received capability information as an intermediary node capable of relaying traffic between the first network and a second network. Parameters for a connection between the access node and the terminal are determined in the access node on the basis of the identification of the terminal as intermediary node and used in establishing the connection between the access node and the terminal.01-06-2011
20110223855Methods and Arrangements for Determining Radio Characteristics of a Radio Link - A method and arrangement in a first node (09-15-2011
20120322362WIRELESS COMMUNICATIONS METHODS AND APPARATUS - A method of relaying a signal in a wireless communications network comprising a plurality of wireless devices, the method being performed by at least one of said wireless devices to relay a signal in a communication path between one of said plurality of wireless devices and another one of said wireless devices, the method comprising receiving a signal from said one of said plurality of wireless devices, determining channel statistical information relating to a part or the whole of said wireless communications network, selecting a mode of relaying said signal from a plurality of predetermined relay modes based on said determined channel statistical information, such that the outage probability for said communication path satisfy a predetermined condition, and transmitting said signal to said another one of said plurality of wireless devices using said selected mode.12-20-2012
20120322363RELAY STATION, BASE STATION, MOBILE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A relay station capable of communicating with a first base station, a second base station, and a mobile station, includes a relay unit configured to relay communication between the first base station and the mobile station; a receiving unit configured to receive load information concerning the second base station; and a changeover unit configured to change, from the first base station over to the second base station, a communication counterpart of the mobile station, communicating with the mobile station via the relay unit, the communication counterpart being changed based on the received load information.12-20-2012
20100203826DATA RELAY APPARATUS, COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A data relay apparatus includes a first demodulating unit, demodulating a modulation signal of a first modulation mode from a first transmission source; a second demodulating unit, demodulating a modulation signal from a second transmission source, having a modulation mode higher than the first modulation mode; a combination controlling unit, providing a mapping rule necessary for performing signal combination in accordance with the modulation mode of the modulation signal from each of the first and second transmission source, the mapping rule to map the demodulated modulation signal from the first transmission source together with the demodulated modulation signal from the second transmission source to a constellation of symbols of the second modulation mode; a data combining unit, performing data combination on the demodulated modulation signal from the first transmission source and the demodulated modulation signal from the second transmission source according to the mapping rule.08-12-2010
20110244789WIRELESS COMMUNICATION APPARATUS AND DATA RELAY METHOD - An optimum path storage unit stores optimum paths on all wireless communication devices that can be destinations of data. A reception unit receives relay data as a relay target. A QoS judgment unit reads out an optimum path corresponding to a QoS requirement of relay data from the optimum path storage unit and judges whether or not the QoS requirement of data is satisfied by the optimum path. The QoS judgment unit outputs relay data to a transmission unit when it is determined that the QoS requirement is satisfied. The transmission unit transmits the relay data to the next node on the optimum path. When the QoS requirement of the relay data is not satisfied by the optimum path, a NACK information generation unit generates NACK information that includes the fact that transmission of the relay data has been interrupted and transmits the NACK information to neighboring wireless communication devices.10-06-2011
20120100799METHOD OF DETERMINING RELIABILITY OF RECEIVED SIGNAL, METHOD OF CALCULATING CODE PHASE ERROR, AND APPARATUS FOR DETERMINING RELIABILITY OF RECEIVED SIGNAL - A method of determining reliability of a received signal is provided, which includes correlating a received signal from a satellite to a replica code, determining reliability of the received signal according to a predetermined reference using a first value and a second value, the first value being a correlation value of a peak phase obtained from the correlating and the second value being a correlation value of a phase delayed for a predetermined phase from the peak phase and changing the reference according to the satellite.04-26-2012
20130012119ENABLING DOWNLINK TRANSPARENT RELAY IN A WIRELESS COMMUNICATIONS NETWORK - Methods and apparatus are described for enabling downlink transparent relay in a wireless communication network. In a wireless communications network, a base station and a mobile station may communicate with each other via a relay station, as needed. Transparent relay may allow for relay communication between a base station and a mobile station although the mobile station is unaware of the relay station. However, non-contiguous transmission of a relay station may lead to channel quality measurement and channel estimation degradation during downlink transparent relay. According to some aspects, a base station may schedule a mobile station to a transmission mode that utilizes dedicated pilot signals for downlink transparent relay, and a relay station may transmit data and dedicated pilot signals over the same channel resources as the base station. According to some aspects, the relay station may null common pilot signals transmitted by the base station.01-10-2013
20120149299Multi-Dimensional Adaptive Transmission Technique - Method and apparatus for dynamically optimizing the transmission level of each remote terminal in a satellite-based communication network. Each remote terminal maintains quasi-error-free communication at the highest efficiency level available under changing link conditions and network configurations, without requiring the reservation of substantial power margins, which results in a much more efficient satellite network.06-14-2012
20110159806WIRELESS DATA TRANSPORT APPARATUS AND WIRELESS DATA TRANSPORT SYSTEM - A wireless communication system includes a wireless communication apparatus (fixed terminal) resided in a fixed station side providing a wireless antenna, a wireless communication unit, a server processing unit, a task list, a data communication unit, a buffer management unit and a buffer, and a wireless data transport apparatus (mobile terminal) resided in a mobile station side providing the wireless antenna, the wireless communication unit, a server determination unit, a task list I/O unit, the task list, a client processing unit and the buffer, thereby, the mobile terminal receives the task list from the fixed terminal to communicate data with another fixed terminal and transports not only the data but also a data acknowledgement, and the fixed terminal creates the acknowledgement to use the acknowledgement to thereby control a creation and deletion of bulk data appropriately.06-30-2011
20110159805Communication System - The present application relates to a wireless communication system and related methods and apparatuses for transmitting a signal from a source apparatus to a destination apparatus, via at least one intermediate apparatus. In particular, the present invention relates to techniques which seek to improve the throughput of data in multi-hop communication systems.06-30-2011
20110159804METHODS AND APPARATUS FOR IDENTIFYING SIGNAL DEGRADATION IN A RECEIVER - Described herein are systems, methods and apparatus for identifying signal degradation in a receiver. A process for identifying signal degradation includes determining a first signal strength of a signal received by the receiving device at a first time and determining a second signal strength of the received signal at a second time. The process further includes calculating a signal strength difference between the first signal strength and the second signal strength and determining whether the signal strength difference is greater than a first decision value. The process further includes outputting for presentation a message responsive to determining that the signal strength difference is greater than the first decision value, the message indicating to a user the degradation of the signal.06-30-2011
20130095749SYSTEM AND METHOD FOR DETECTING AND MEASURING UPLINK TRAFFIC IN SIGNAL REPEATING SYSTEMS - A signal repeating system for a wireless network includes an antenna configured for transceiving signals between a base station and a user equipment device. Repeating circuitry is coupled to the antenna and defines an uplink path for signals from the user equipment device to the base station and a downlink path for signals from the base station to the user equipment device. The repeating circuitry includes gain circuitry and gain control circuitry that is coupled to the gain circuitry. The gain control circuitry is operable for varying the gain of the repeating circuitry according to a waveform. Measurement circuitry measures the receive power in the uplink path over time from the user equipment device. Processing circuitry cross-correlates the inverted gain variation waveform with the measured receive power for determining the existence of traffic from user equipment devices in the uplink path.04-18-2013
20130143484SYSTEM AND METHOD FOR MEASURING OF RADIO FREQUENCY IN INTERPLANETARY SPACE - A system and method for observing a radio wave in an interplanetary space are provided. The system may include a tile unit to observe a Radio Frequency (RF) signal generated from a cosmic radio source in the interplanetary space, and to generate observation data, a node unit to digitalize the generated observation data, and to store the digitalized observation data, and a data analyzing unit to analyze the digitalized observation data and to compute a characteristic of a solar wind.06-06-2013
20080207117APPARATUS AND METHOD FOR SELECTING A RELAY MODE IN A MULTIHOP RELAY BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for selecting one of a plurality of relay modes in a wireless communication system are provided. The method includes checking a channel state between a Mobile Station (MS) and each of at least one Relay Station (RS), selecting the relay mode for supporting a relay service using the determined channel state between the MA and each of the at least one RS, and providing the relay service to the MS using the selected relay mode. Thus, system throughput and outage performance can be enhanced by using the appropriate relay mode based on the MS distribution or the channel condition.08-28-2008
20110212685TERMINAL DEVICE, RELAY DEVICE, AND BASE STATION COMMUNICATION METHOD - A communication method includes at a relay device, receiving first data from the base station, the first data including first control information that represents a first communication mode from the base station to the relay device, adding second control information to the received first data, the second control information representing a second communication mode from the relay device to the terminal device, and relaying second data to the terminal device, the second data including the first data added with the second control information; and at a terminal device, receiving the first data of the first communication mode storing the first data in a buffer, performing reception processing on the second data based on the second control information included in the second data, performing reception processing on the first data based on the first control information included in the second data, and combining the first and second data.09-01-2011
20100285739MULTI-METRIC GAIN CONTROL FOR WIRELESS REPEATER - A method for controlling gain in a wireless repeater includes using two or more gain control metrics indicative of stability of the repeater, at least two of the gain control metrics having different integration lengths, where the integration length is the sum of the coherent integration time and the non coherent integration time, and controlling a variable gain value of the repeater based on one or more of the selected gain control metric(s) where the gain control metric(s) to use is selected based on the stability of the repeater.11-11-2010
20130137364Method and Apparatus for Reducing Interference - A method includes receiving information relating to interference between a relay node associated with a first base station and at least one other relay node associated with a second base station. The method also includes initiating modifying transmitting parameters of the relay node and/or the at least one other relay node on the basis of the information.05-30-2013
20130137363APPARATUS AND METHOD FOR COMMUNICATION SATELLITE MONITORING - Provided is an apparatus for monitoring a communication satellite, including: a receiver to receive at least one satellite service signal from a satellite repeater; a measurement unit to measure a frequency, a bandwidth, and a magnitude of the at least one satellite service signal; a controller to determine whether a signal transmitting station malfunctions by comparing the at least one satellite service signal with a predetermined reference value based on the measurement result; and a communication unit to inform an operator terminal about a malfunction of the signal transmitting station when the signal transmitting station is determined to malfunction.05-30-2013
20100317286COMMUNICATION RELAY METHOD AND APPARATUS BASED ON OBJECT SENSING FUNCTION - A communication relay method of a communication relay apparatus in a multi-mode wireless environment includes: sensing a wireless access environment of a terminal based on an object sensing function; deciding whether or not to provide a predetermined communication relay service to the terminal; and deciding an operation network which is to provide the predetermined communication relay service.12-16-2010
20120282856MEASURING DEVICE AND A MEASURING METHOD FOR TESTING MOBILE-RADIO RELAY STATIONS - A measuring device for testing mobile-radio relay stations provides at least one antenna and a processing unit. A base station or a mobile station transmits a first signal to a relay station. The relay station generates a second signal derived from the first signal and transmits it. The antenna of the measuring device receives the first signal and the second signal. The processing unit of the measuring device compares the received signals.11-08-2012
20110306291ENABLING DOWNLINK TRANSPARENT RELAY IN A WIRELESS COMMUNICATIONS NETWORK - Methods and apparatus are described for enabling downlink transparent relay in a wireless communication network. In a wireless communications network, a base station and a mobile station may communicate with each other via a relay station, as needed. Transparent relay may allow for relay communication between a base station and a mobile station although the mobile station is unaware of the relay station. However, non-contiguous transmission of a relay station may lead to channel quality measurement and channel estimation degradation during downlink transparent relay. According to some aspects, a base station may schedule a mobile station to a transmission mode that utilizes dedicated pilot signals for downlink transparent relay, and a relay station may transmit data and dedicated pilot signals over the same channel resources as the base station. According to some aspects, the relay station may null common pilot signals transmitted by the base station.12-15-2011
20130189921MULTIPATH INTERFERENCE CANCELLATION THROUGH CEPSTRUM ANALYSIS - A method and apparatus of mitigating multipath coupling interference in a wireless repeater system 07-25-2013
20080242225APPARATUS AND METHODS FOR TESTING USING MODULATION ERROR RATIO - Apparatus and methods are disclosed for testing or qualifying a repeater/transmitter in a multicarrier system by utilizing modulation error ratio (MER). In particular, a disclosed method includes determining an estimated effective modulation error ratio of an output of the repeater/transmitter. The estimated effective modulation error ratio is compared with a predetermined threshold, and the repeater/transmitter is qualified when the estimated effective modulation error ratio is greater than the predetermined threshold. Using an estimated modulation error ratio for repeater/transmitters, which can have non-flat modulation error ratios over a total number of subcarriers, affords an efficient method to test and qualify repeater/transmitters.10-02-2008
20120028570ANALOG SPACE-TIME RELAY METHOD AND APPARATUS FOR A WIRELESS COMMUNICATION RELAY CHANNEL - An analog space-time relay method and apparatus for a wireless communication relay channel is disclosed herein. In a specific embodiment, the analog space-time relay channel (02-02-2012

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