Class / Patent application number | Description | Number of patent applications / Date published |
455502000 | Synchronized stations | 54 |
20080227474 | BASE STATION SYNCHRONIZATION - A method, implemented in a user equipment (UE), of maintaining base station synchronization, comprises receiving a measurement message from a radio network controller (RNC) directing the UE to measure a time difference of arrival (TDOA) between signals transmitted from a first and second base station. The UE receives a transmission from the first and second base stations and measures the TDOA of the transmission from the first and second base station. The UE transmits the measurement of the TDOA of the transmission from the first base station to the first base station, and the measurement of the TDOA of the transmission from the second base station to the second base station. | 09-18-2008 |
20080280634 | Adaptive antenna control method and adaptive antenna transmission/reception characteristic control method - An adaptive antenna control method is used for a radio communication system built by a plurality of radio base stations and a plurality of terminal stations capable of communicating with the radio base stations. Each radio base station includes an adaptive antenna having a plurality of antenna elements, a distributor for generating signals to be input to the plurality of antenna elements by branching a signal of one system to be transmitted, and weighting circuits for respectively weighting transmission signals to the plurality of antenna elements. For reception by each terminal station, an interference wave power given by the transmission signal from each of the plurality of radio base stations is estimated. A weight in the adaptive antenna of each radio base station is determined to minimize a sum of square errors between reception signals and desired signals for all the radio base stations which simultaneously use the same communication channel. An adaptive antenna transmission/reception characteristic control method is also disclosed. | 11-13-2008 |
20080287153 | Clock synchronization for a wireless communications system - A method of clock synchronization for a wireless communications system includes receiving a radio frequency (RF) signal at a base station and at a network reference server (NRS). The NRS is also coupled to receive a reference clock signal. A clock offset value is then calculated in response to the RF signal received at the base station, the RF signal received at the NRS, and the reference clock signal. A local clock signal at the base station is then synchronized with the reference clock signal in response to the calculated clock offset value. | 11-20-2008 |
20090005093 | SYSTEM AND METHOD FOR ACQUIRING BASE STATION SYNCHRONIZATION IN A COMMUNICATION SYSTEM - A system and method for acquiring BS synchronization in a communication system are provided. In the system and method, a first BS acquires synchronization and transmits a frame to at least a second of the one or more neighbor BSs according to the synchronization, a second BS being the at least one neighbor BS estimates its first uplink frame synchronization time using a first arrival time of a downlink frame in the frame and transmits a first message at the first uplink frame synchronization time to the first BS, the first BS calculates a synchronization time difference by comparing a second arrival time of the first message with its uplink frame synchronization time and transmits a second message including the synchronization time difference to the second BS, and the second BS estimates a synchronization time using the synchronization time difference, acquires synchronization to the first BS, and transmits a frame generated with the same timing as the first BS. | 01-01-2009 |
20090011782 | CLOCK SYNCHRONIZATION OVER A SHARED MEDIUM - Communicating among stations in a network includes providing repeated beacon transmissions from at least some of the stations including a first station. The first station is assigned to a first level. Any stations that can reliably receive transmissions from the first station are assigned to a second level. Any stations not assigned to any of the preceding levels that can reliably receive transmissions from the preceding level are assigned to each of one or more higher levels. Timing information at each station in a given level is synchronized according to transmissions received from at least one station in the preceding level. | 01-08-2009 |
20090017851 | Synchronization Of A Peer-To-Peer Communication Network - In an ad hoc peer-to-peer communications network, timing synchronization is facilitated between two or more nodes. A node can establish an original symbol timing and receive a first timing synchronization symbol from a peer node. A timing adjustment can be calculated based in part on the first timing synchronization symbol. An adjusted symbol timing can be established by adjusting the first symbol timing by the calculated timing adjustment amount. The adjusted symbol timing can be conveyed to one or more peer nodes, in order to facilitate timing synchronization among the nodes. | 01-15-2009 |
20090017852 | TRANSMITTER, MODULATOR AND METHOD FOR SIGNAL SYNCHRONIZATION TRANSMISSION IN SINGLE FREQUENCY NETWORK TRANSMISSION SYSTEM - A method, transmitter and modulator for signal synchronization transmission in a single frequency network transmission system are disclosed. The method includes: extracting effective data from data received; performing channel coding, mapping and modulation to the effective data extracted and saving the data modulated into storage; and retrieving the data from the storage upon receiving a pulse indication signal, performing digital-to-analog conversion and baseband-to-radio frequency conversion to the data retrieved and transmitting the data converted into air via antennae. The technical scheme enables different transmitters to transmit signals synchronously. | 01-15-2009 |
20090029727 | APPARATUS, AND ASSOCIATED METHOD, FOR SELECTABLY DELAYING SYNCHRONIZATION OF DATABASE COPIES IN A RADIO COMMUNICATION SYSTEM - Apparatus, and an associated method, for selectably delaying performance of synchronization operations in which database copies are placed in match with one another. A user of a mobile node at which a database copy is maintained selectably actuates an actuator to select delay of performance of the synchronization operations. Once selection is made to delay the performance of the synchronization operations, selection is further made by a delay selector of the delay period prior to which synchronization operations are carried out. | 01-29-2009 |
20090042591 | APPARATUS AND METHOD FOR ACQUIRING SYNCHRONIZATION TO SUPPORT MULTI-FREQUENCY IN MOBILE COMMUNICATION TERMINAL - An apparatus and a method for acquiring synchronization to support multi-frequency in a mobile communication terminal are provided. The apparatus includes a frequency generator, a control signal generator and at least two modems for operating respective Frequency Allocations (FAs) by sharing the frequency generator and the control signal generator. In an embodiment, the frequency generator respectively receives first reference frequency clock signals from an oscillator of each of the at least two modems and generates a second reference frequency clock signal and the control signal generator outputs a signal for controlling the oscillator of each of the at least two modems according to a frequency offset value estimated in each of the at least two modems. | 02-12-2009 |
20090054094 | METHOD FOR IDENTIFYING A CODE GROUP REPRESENTATIVE OF A NUMBER OF BASE STATIONS - A method and apparatus for identifying a code group representative of a predetermined number of base stations is disclosed. A chip offset within a frame is input into a first correlator. A plurality of samples of chips at which a primary synchronization code (PSC) has been detected are input into the first correlator. Output of the first correlator is multiplied by the complex conjugate of the PSC to obtain a magnitude for the signals being transmitted at the chips inputted into the first correlator. The magnitude is summed over four frames. The summed signals view of a predetermined set of decision variables is evaluated. A case number, a code group, a timeslot location, and a system frame number are determined based on the evaluation and noise estimation. | 02-26-2009 |
20090088194 | Single Multi-Mode Clock Source for Wireless Devices - The wireless device described herein uses a single crystal oscillator to generate the high and low frequency clock signals required by the wireless device during both active and inactive radio communications. An exemplary multi-mode clock unit comprises a single crystal oscillator operable in a normal power mode and a reduced power mode, and a control unit that selectively switches the crystal oscillator between the first and second power modes based on a current clock signal quality requirement. The control unit may selectively switch between the first and second power modes by selectively varying a capacitive load of the crystal oscillator and/or by varying a drive signal of the crystal oscillator. For example, the control unit may select the normal power mode when a cellular transceiver is active, and a reduced power mode when the cellular transceiver is inactive to reduce power consumption during the inactive state. | 04-02-2009 |
20090117928 | SYSTEM AND METHOD FOR DISTRIBUTING TIME AND FREQUENCY OVER A NETWORK - A system to distribute accurate time and/or frequency over a network utilizing signals of opportunity transmitted by one or more local transmitters with known locations, the system includes a base receiver with a clock synchronized to a reference time scale such as GNSS or UTC time that saves a series of samples of the signals of opportunity and time tags the series with a calculated time of broadcast. A remote receiver saves samples of the signals of opportunity and correlates the series with the saved samples. The remote receiver calculates a time of transmission of saved samples that correspond to the series, determines a time offset as a difference in the time of broadcast calculated at the remote receiver and the time of broadcast calculated at the base receiver, and determines the time offset with respect to the base receiver. The base receiver further or instead phase locks to the signal opportunity and at predetermined intervals determines phase measurements of the integrated carrier frequency of the signal of opportunity and provides the phase information to the remote receiver. The remote receiver, which is also phase locked to the same signal of opportunity, uses the phase measurement information to frequency lock its clock to the base receiver clock by determining a frequency error based on the rate of change of phase measurements made at the base receiver and the remote receiver. | 05-07-2009 |
20090170543 | METHOD AND APPARATUS TO MAINTAIN NETWORK COVERAGE WHEN USING A TRANSPORT MEDIA TO COMMUNICATE WITH A REMOTE ANTENNA - In a cellular communications system having a centralized radio processing portion (a base station hotel) in communication with a plurality of remote air interface radio portions (or radio heads) over a transport medium, the centralized radio processing portion compensates for a fixed delay associated with the transport medium coupling the centralized radio processing portion and one of the remote air interface radio portions when evaluating a time period corresponding to a variable delay between transmission by a mobile in communication with the one of air interface radio portions and receipt of the transmission by the centralized radio processing portion. The variable delay may relate to time out periods or time slot synchronization. | 07-02-2009 |
20090286564 | MOBILE APPARATUS AND METHOD OF TIMING SYNCHRONIZATION - A mobile apparatus and method of timing synchronization. The mobile apparatus comprises a timing synchronization controller, a frame detector, a decoder, and a clock generator. The timing synchronization controller determines a number of times of the mobile station clock switching from a first clock speed to a second clock speed, and compares the number of times of the mobile station clock switching the clock speed with a predetermined number of clock speed switch. The frame detector, coupled to the timing synchronization controller, receives a control channel block when the number of times of clock speed switch reaches the predetermined number of clock speed switch. The decoder, coupled to the frame detector, decodes the control channel block to compute a timing error between the base station clock and the mobile station clock. The clock generator, coupled to the decoder, receives the timing error to compensate for the mobile station clock. | 11-19-2009 |
20090318175 | SYSTEM AND METHOD FOR DETERMINING A TRANSMIT TIMING FOR COMMUNICATION IN A RADIO COMMUNICATION SYSTEM - A method for determining a transmission timing is provided. The method includes steps of, at a first point in time, determining a first transmission timing for transmissions from a user entity to a first radio transceiver, and determining a representation of a first position of the user entity in relation to the first radio transceiver and at least a second and a third radio transceiver. The method further includes, at a second point in time, subsequent to the first point in time, determining a representation of a second position of the user entity in relation to the first, second and third radio transceivers, and adjusting the transmission timing based on a difference of the first position and the second position. | 12-24-2009 |
20100035641 | Communication Device, Base Station, Method Of Communication, And Communication System - The MS detects a difference in timing or frequency between a reference signal being any one of the received signals from a plurality of BSs and each of the other received signals, notifies the results of detection to BSs other than the source BS of the reference signal, and the BSs other than the source BS of the reference signal control the timing or frequency of transmission of the signal to be received by other MSs other than the MS on the basis of the results of the detection. | 02-11-2010 |
20100069106 | METHOD AND SYSTEM FOR FRAME TIMING ACQUISITION IN EVOLVED UNIVERSAL TERRESTRIAL RADIO ACCESS (EUTRA) - Aspects of a method and system for frame timing acquisition in evolved universal terrestrial radio access (EUTRA) may include determining a received secondary synchronization sequence (SSS) based on a selected cyclic prefix length and on synchronization of a primary synchronization sequence (PSS). A first portion of information associated with the received SSS may be processed separately from a second portion of information associated with the received SSS. A frame timing and/or base station identifier may be determined by comparing the processed first portion of information with the processed second portion of information. The cyclic prefix length may be selected from a finite set of possible cyclic prefix lengths. The cyclic prefix length may be, for example, 9 samples or 32 samples. The primary synchronization sequence synchronization may be determined via correlation. | 03-18-2010 |
20100099451 | Method and System for Real Time Control of an Active Antenna Over a Distributed Antenna System - The invention is directed to a method and system for supporting wireless medical telemetry services (MTS) on a Distributed Antenna System (DAS). A DAS can support a many wireless services, including voice and data services using the same physical equipment. WMTS systems can include one or more active antenna units which can be controlled by the MTS access point. The DAS can include one or more control channels for transferring the MTS control and status information between the MTS access point and the antenna. The control channels can be transferred over a separate cable. Alternatively, the control channel signals can be transferred using one or more intermediate frequency signal that is transferred over the existing cables of the DAS between the MTS access point and the antenna. The control channels can be used to configure and control and receive status from the managed components of the DAS including active antennae, control in real time the amplifiers used to process TDD signals, and control in real time the switching of the diversity antenna systems. The original frequency of the WMTS can be converted to an IF signal in order to be combined without interfering with the other services transferred over the DAS. The DAS can also carry a reference clock signal that can be used to synchronize the frequency conversion to and from an IF signal for transmission over the DAS without interfering with other signals. The reference clock signal can be used to control the operation of the antenna units, including controlling the operation of diversity antenna configurations and controlling antenna broadcast operations to reduce interference when two or more antenna units broadcast on the same frequency band at the same time. | 04-22-2010 |
20100120457 | NON-INTERFERING MULTIPATH COMMUNICATION SYSTEM - A non-interfering multipath communication technique establishes a base transmit and receive period for a variety of spaced apart transceiver devices of a base station and communicates between at least one field station and the base station through those transceiver devices; a period of the base station is allocated amongst the transceiver devices to maintain the non-interfering multipath communication between the at least one field station and the base station. | 05-13-2010 |
20100120458 | SYSTEM AND METHOD FOR SYNCHRONIZING WIRELESS COMMUNICATION DEVICES - According to the present invention, Bluetooth master device offset information is determined and distributed among the master devices within a Bluetooth network. The system either provides an offset to each master device or determines master device offsets and distributes this information to master devices within the system to allow or efficient hand-offs of a slave between master devices. | 05-13-2010 |
20110028171 | Method and Apparatus for Optimizing Radio Resource Control Procedures in Wireless Communication System - A method for optimizing a radio resource control procedure in a wireless communication system is disclosed. The wireless communication system supports Coordinated multi-point (CoMP) transmission/reception, which enables a plurality of cells cooperating and providing services for a user equipment (UE). The method includes defining cells directly or indirectly participating in transmission to the UE within the plurality of cells as members of a CoMP cooperating set, and setting the cells of the CoMP cooperating set to use a same system frame number. | 02-03-2011 |
20110065465 | PRECODING METHOD AND APPARATUS, AND PRECODING CONTROL METHOD AND APPARATUS - To control precoding of a terminal in a serving base station, a first codeword that maximizes transmission power of the serving base station is determined by a codebook, and an index of a second codeword that minimizes interference to the neighboring base station is transmitted from the neighboring base station. The serving base station transmits an index of the first codeword, an index of the second codeword, and a combination ratio of a precoding matrix corresponding to the index of the first codeword and a precoding matrix corresponding to the index of the second codeword to the terminal. | 03-17-2011 |
20110143794 | Method and Arrangement for Detecting a Radio Coverage - A method and arrangement for detecting a radio coverage in a synchronous multicellular mobile radio system having a multitude of synchronous base stations that are connected to an evaluating unit are provided. All base stations are operated in succession in a measuring operating mod. A respective field intensity of base stations that are locally adjacent and in a normal operating mode is measured, and the respectively measured field intensity data are evaluated by the evaluating unit. This enables a sufficient radio coverage to be determined in a highly cost-effective manner and, optionally, to be corrected. | 06-16-2011 |
20110159901 | Method and Arrangement, Cell ID Collision Detection - The present invention relates to methods, a communication network node and a user equipment for detecting collision of physical cell identities in a communication network system comprising radio base stations each serving at least one cell through which user equipments are moving. Reference signals comprising reference symbols corresponding to a physical cell identity are sent from said radio base stations to said user equipments over a radio interface. Transmission gaps of reference symbols are inserted in the reference signal in order to perform a physical cell identity collision test. The user equipments are arranged to detect if any other radio base station is sending reference symbols corresponding to the same physical cell identity during the transmission gaps. Thereby a physical cell identity collision is detected. The reference symbol transmission gaps are fractionally distributed within said reference signal such that at least some of said reference symbols are unaffected by said reference symbol transmission gaps. | 06-30-2011 |
20110190015 | BASE STATION SYNCHRONIZATION - A method and apparatus of time synchronizing a plurality of base stations in a wireless communication system includes receiving an indication of a timing associated with a synch burst, where the synch burst is from a mastercell having a better time synchronization quality than other cells and measured by at least one cell other than the mastercell. A request is sent to a wireless transmit/receive unit (WTRU) for a measurement of a base station time of arrival (BSTOA) value of the at least one cell other than the mastercell. The BSTOA value from the WTRU is received and a timing adjustment is sent to the at least one cell other than the mastercell. | 08-04-2011 |
20110312357 | Method for Generating Cooperation Areas in Communications Networks and Corresponding Network Nodes - The present invention refers to generating of cooperation areas in a communications network, wherein each cooperation area is defined by at least two base stations of said communications network, which are cooperating when communicating with mobile nodes in said communications network. In particular, a number of sets of possible interferers is transmitted to at least one mobile node by a base station, wherein with each set of possible interferers an index value associated to said set of possible interferers is transmitted. Then, said mobile node selects a set of possible interferers from said number of sets of possible interferers and transmits a selected index value to said base station, said selected index value being an index value associated to said selected set of possible interferers. Hereupon, a cooperation area for said mobile node is defined by said base station by use of said selected index value. | 12-22-2011 |
20120040703 | BROADCASTING METHOD, ACCESS CONTROL APPARATUS AND RADIO APPARATUS - A processing unit generates timing information on timing, with which each of radio apparatuses is to synchronize in communication between the radio apparatuses when each of the radio apparatus broadcasts a signal, to control the communication between the radio apparatuses. A modem unit and the like broadcast the thus generated timing information. An RF unit and the like receive a signal which is synchronous with the timing information broadcast by them. When a signal which is asynchronous with the timing information and when the duration of this signal continues for a period longer than a first threshold value and the quality of this signal is more deteriorated than a second threshold value, a decision unit detects that the received signal is a disturbing signal. The modem unit and the like also broadcast to the effect that the disturbing signal has been detected. | 02-16-2012 |
20120046056 | SAMPLE SELECTION FOR SECONDARY SYNCHRONIZATION SIGNAL (SSS) DETECTION - Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell. | 02-23-2012 |
20120083303 | OPPORTUNISTIC SPECTRUM ACCESS IN MOBILE COGNITIVE RADIO NETWORKS - A method of spectrum access for wireless communications by a secondary unlicensed unit in a CRN environment comprising one or more secondary unlicensed mobile units and one or more primary licensed units includes receiving information indicative of a location and movement of one or more secondary unlicensed units and a channel usage pattern and spatial distribution of one or more primary licensed units is accessed and a guard distance to shield the one or more primary licensed units from interference is calculated. The channel availability to the one or more secondary unlicensed units is then calculated according to a two-state Markov model including the guard distance as a constraint and based on the information indicative of the location and movement of the one or more secondary unlicensed units and the channel usage pattern and spatial distribution of the one or more primary licensed units. | 04-05-2012 |
20120184311 | BASE STATION DEVICE - The present invention relates to a base station device | 07-19-2012 |
20120184312 | BASE STATION DEVICE - A base station device includes: a downlink signal reception unit | 07-19-2012 |
20120214524 | SATELLITE RECEIVER WITH INTERFERING SIGNAL CANCELLATION - A method for communication includes receiving a Radio Frequency (RF) channel containing a desired signal conforming to a first air interface and an interfering signal conforming to a second air interface. A first receiver configured for the first air interface and a second receiver configured for the second air interface are synchronized to a common frequency and timing reference. While the first and second receivers are synchronized, the desired signal is decoded from the RF channel using the first receiver to generate a first output, the interfering signal is decoded from the RF channel using the second receiver to generate a second output, and the desired signal is reconstructed while suppressing the interfering signal by jointly processing the first and second outputs. | 08-23-2012 |
20120214525 | RADIO BASE STATION, USER TERMINAL AND FREQUENCY BAND SHARING METHOD - A CRS base station ( | 08-23-2012 |
20130040674 | Method of Beacon Synchronization For Base Stations - The present invention discloses a method of beacon synchronization for base stations, which comprises the following steps: receiving or transmitting a beacon by a first base station or a second base station; scanning at least one channel by the second base station to search for a channel of the first base station; calculating a time difference between the beacon sent by the first base station and the beacon sent by the second base station; and adjusting a time of transmitting the beacon sent by the second base station to synchronize the beacon sent by the second base station with the beacon sent by the first base station. Wherein, a wireless signal of the second base station is interfered by the first base station. | 02-14-2013 |
20130260809 | METHOD AND APPARATUS FOR ADJACENT CHANNEL EMISSION LIMIT - In accordance with an example embodiment of the present invention, an apparatus comprises a transceiver configured to receive a transmission signal from a radio node; a processor configured to, based on the received transmission signal, determine membership of the apparatus and the radio node in a common synchronization group and based at least in part on the determination, adjusting at least one transmission parameter. | 10-03-2013 |
20130288728 | CO-PHASING OF TRANSMISSIONS FROM MULTIPLE INFRASTRUCTURE NODES - Briefly, in accordance with one or more embodiments, mobile station or user equipment receives pilot signals from two or more infrastructure nodes in a distributed antenna system, and calculates phase or timing information, or combinations thereof, from the pilot signals. The mobile station feeds back the phase or timing information, or combinations thereof, to the infrastructure nodes, and then receives one or more subsequent transmissions from the infrastructure nodes with phase shift or timing adjustments, or combinations thereof, calculated by the infrastructure nodes and applied to the spatial streams transmitted by the infrastructure nodes. | 10-31-2013 |
20130310094 | NETWORK STATION POWER ADJUSTMENT APPARATUS AND POWER ADJUSTMENT METHOD THEREOF - A network station power adjustment apparatus and a power adjustment method thereof are provided. The network station power adjustment apparatus connects to a base station. The base station connects to a mobile station. The network station power adjustment apparatus determines a synchronization time transformation function according to the connection status between the base station and the mobile station, and further transforms a Signal-Noise ratio between the base station and the mobile station into a synchronization time correspondingly. When the network station power adjustment apparatus determines that the synchronization time is greater than a threshold, the network station power adjustment apparatus transmits a power adjustment signal to the base station so that the base station lowers a base station down-link synchronization channel transmitting power accordingly. | 11-21-2013 |
20130324173 | Methods and Arrangement for Supporting Base Station Synchronization by use of Long Wave Signaling - Methods and arrangements in a support node and in connection with a base station for supporting synchronization of the base station. The methods and arrangements involve conveying high-accuracy time information via long-wave signaling to the base station, which implies e.g. that base stations in unfavorable radio conditions may be synchronized without access to reliable IP connections or similar. | 12-05-2013 |
20140120971 | SYNCHRONISED RADIO TRANSCEIVERS - Synchronised radio transceivers Disclosed are a method of and apparatus for controlling a first radio transceiver ( | 05-01-2014 |
20140221030 | USER TERMINAL - A CRS base station ( | 08-07-2014 |
20150018027 | APPARATUS AND METHOD FOR INTER-VEHICLE COMMUNICATION - An apparatus and a method for inter-vehicle communication includes a communicator communicating with another vehicle and a position determiner verifying position information of a vehicle, A controller is configured to synchronize a time point of transmitting/receiving a message to/from the other vehicle through a signal from the position determiner, performing a phase control for transmitting message, and transmitting the message to the other vehicle at a determined time point of transmitting the message according to the phase control result. | 01-15-2015 |
20150045077 | METHOD AND APPARATUS FOR HANDLING PRIMARY SCRAMBLING CODES - The present disclosure presents a method and apparatus for handling primary scrambling codes (PSC) in a wireless network. For example, the disclosure presents a method for detecting, by a user equipment (UE) of a plurality of UEs, a PSC in search windows with different timing offsets, wherein the different timing offsets correspond to a plurality of small cells sharing the PSC in a coverage area of a macro cell, and transmitting, by the UE, a plurality of measurement reports corresponding to the different timing offsets. As such, primary scrambling codes (PSC) are handled in a wireless network. | 02-12-2015 |
20150094108 | RECEIVER AND A METHOD FOR MOBILE COMMUNICATIONS - In a method and a mobile communications receiver for processing signals from a first cell and a second cell a timing of the signal from the first cell and the second cell is obtained. A timing difference (δ) between the timings of signals from the first and the second cell is determined and based on that a timing (κ) for a window for discrete Fourier transform, DFT, processing is adjusted. DFT processing of the signals using the timing (κ) of the DFT window is then performed. | 04-02-2015 |
20150373618 | METHOD AND APPARATUS FOR DIRECTIONAL MESH INITIALIZATION - A method and apparatus for association in a mesh network may be disclosed. A method in a new node may include performing a discovery procedure with a plurality of peer nodes in the mesh network, initiating a temporary association procedure with each peer node, selecting a set of peer nodes from the plurality of peer nodes based on a selection algorithm at least based on a signal-to-interference and noise ratio (SINR) with each peer node and an interference impact of each peer node, and performing a final association with the selected set of peer nodes. | 12-24-2015 |
20160198427 | METHOD AND APPARATUS FOR WIRELESS CLOCK REGENERATION | 07-07-2016 |
455503000 | Simulcast system | 9 |
20080268887 | Multipoint data transmission - A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal. | 10-30-2008 |
20090036152 | METHOD FOR ENABLING MULTICAST TRAFFIC FLOWS OVER HYBRID MULTICAST CAPABLE AND NON-MULTICAST CAPABLE RADIO ACCESS NETWORKS (RANS) - A method for multicast packet communication by mobile entities ( | 02-05-2009 |
20090098895 | Selective Service Method In Multicast System - A multicast service of a 3GPP Universal Mobile Telecommunications System (UMTS) is disclosed. A multicast service stream identifier is provided so that each multicast area can receive different information for one service or one multicast service can be provided with different QoSs to areas. In addition, the multicast service stream identifier is provided which can selectively receive diverse menus or channels for one multicast service provided in the same area. Thus, by providing the multicast service stream identifier, users' desires for various services can be satisfied. | 04-16-2009 |
20090098896 | Selective Service Method In Multicast System - A multicast service of a 3GPP Universal Mobile Telecommunications System (UMTS) is disclosed. A multicast service stream identifier is provided so that each multicast area can receive different information for one service or one multicast service can be provided with different QoSs to areas. In addition, the multicast service stream identifier is provided which can selectively receive diverse menus or channels for one multicast service provided in the same area. Thus, by providing the multicast service stream identifier, users' desires for various services can be satisfied. | 04-16-2009 |
20090291700 | GRADUATED SINGLE FREQUENCY NETWORK - The signals from adjacent transmitters reinforce one another. As a result of this over-the-air combining, signal quality is improved in the network and especially at or near cell boundaries. The present invention provides a graduated single frequency network (GSFN) wherein transmitters in cells throughout a geographic area cooperate to broadcast data to user terminals throughout the geographic area, and adjacent transmitters transmit signals that substantially reinforce one another. When transmitting the data, transmitters in certain adjacent cells throughout the geographic area may employ slightly different transmit parameters to provide slightly different transmission signals. The transmission signals used to transmit the data may be varied in a graduated fashion throughout the geographic area, wherein even when there is a difference in the transmission signals of transmitters in adjacent cells, the transmission signals reinforce one another despite being different. | 11-26-2009 |
20100144382 | ESTIMATING TIME DELAYS IN A SIMULCAST COMMUNICATION SYSTEM - A method for facilitating an equalization of a simulcast signal comprising: (a) receiving a simulcast signal comprising known data simulcast from at least two different sites; (b) generating a number of simulated simulcast signals, each simulated simulcast signal being based on at least two sites transmitting said known data with a presumed time delay, each simulated simulcast signal having a different presumed time delay; (c) determining which of said simulated simulcast signals is an optimum simulated simulcast signal that correlates most closely to said simulcast signal; and (d) providing time delay data of said optimum simulated simulcast signal for use in equalization of said simulcast signal. | 06-10-2010 |
20130095871 | BASE STATIONS AND METHODS FOR FACILITATING DYNAMIC SIMULCASTING AND DE-SIMULCASTING IN A DISTRIBUTED ANTENNA SYSTEM - Base stations may include a plurality of antenna ports adapted to communicatively couple to respective remote antenna units. A base station simulcast controller module may be coupled with each antenna port, and may be adapted to transmit downlink transmissions over a plurality of remote antenna units, with two or more of the remote antenna units simulcasting downlink transmissions as a simulcasting group. In response to one or more obtained network traffic parameters, the base station simulcast controller module may modify the simulcasting group to include at least one different remote antenna unit. Methods operational on base station may include transmitting downlink transmissions over a plurality of remote antenna units, where two or more of the remote antenna units form a simulcasting group. The simulcasting group can be modified to include at least one different remote antenna unit in response to one or more obtained network traffic parameters. | 04-18-2013 |
20140364161 | DYNAMIC CONTROL POINT IN SIMULCAST RADIO COMMUNICATION SYSTEM - Simulcast communication network ( | 12-11-2014 |
20150057039 | DISTRIBUTED ANTENNA SYSTEMS AND METHODS OF WIRELESS COMMUNICATIONS FOR FACILITATING SIMULCASTING AND DE-SIMULCASTING OF DOWNLINK TRANSMISSIONS - Distributed antenna systems (DASs) can include a plurality of spatially separated remote antenna units. According to at least one example, a first group of remote antenna units can simulcast downlink transmissions on a first carrier with a particular sector identity (ID). A second group of remote antenna units, including at least one different remote antenna unit from the first group, can simulcast downlink transmissions on a second carrier with the same sector ID. According to at least one other example, two or more remote antenna units which include respective coverage areas that are non-adjacent to one another can be employed to simulcast downlink transmissions. | 02-26-2015 |