26th week of 2015 patent applcation highlights part 74 |
Patent application number | Title | Published |
20150180599 | TIMING OVER PACKET DEMARCATION ENTITY - Apparatus for synchronizing a local clock to a master clock, the apparatus comprising: at least one port for receiving and transmitting packets; a local clock; and a packet inspector that uses time from the local clock to timestamp packets received at a port of the at least one port, copies timing information from the received packets if the packets are timing distribution packets that are transmitted between a master clock and a slave clock in order to synchronize the slave clock to the master clock, and forwards the received packets for transmission from a port of the at least one port towards a packet destination that is not a packet source from where the packets originate, wherein the local clock uses the copied timing information and timestamps to synchronize the local clock to the master clock. | 2015-06-25 |
20150180600 | SYSTEMS AND METHODS FOR SYNCHRONIZATION OF CLOCK SIGNALS - A system may include a transmitting device. The transmitting device may include one or more terminals for receiving a data signal and a first clock signal. A first phase lock loop may lock a phase of an initial periodic signal with a phase of the first clock signal, the first phase lock loop including a divider to generate the initial periodic signal based on the first clock signal. A decimation module may sample the initial periodic signal at a decimated rate of a backplane clock, the backplane clock being asynchronous with a clock that generated the first clock signal. A transmitting data block interface may construct data blocks and provide the data blocks to a receiving device, each of one or more of the data blocks including a portion of the data signal and at least one sample of the initial periodic signal. | 2015-06-25 |
20150180601 | METHOD AND APPARATUS FOR CONTROLLING INTER-CELLULAR INTERFERENCE IN HETNET SYSTEM - Provided is a method and an apparatus for controlling inter-cellular interference in a heterogeneous network (HetNet) system, in which a macro cell and femto cells coexist. The apparatus for controlling inter-cellular interference overbears a control channel of the macro cell. The control apparatus determines an interference candidate resource, which is subject to inter-cell interference control, on the basis of the control channel. The control apparatus transmits an interference control message including information on the interference candidate resource. | 2015-06-25 |
20150180602 | METHOD AND APPARATUS FOR TRANSMITTING OR DETECTING A PRIMARY SYNCHRONIZATION SIGNAL - A method and apparatus for transmitting or detecting primary synchronization signal. The receiver receives primary synchronization signal from a transmitter, and detects the sequence used in the received primary synchronization signal by using three root indexes. Here, the primary synchronization signal is generated by using a Zadoff-Chu sequence having one of the three root indexes. The three root indexes comprise a first index and a second index, and a sum of the first index and the second index corresponds to the length of the Zadoff-Chu sequence. | 2015-06-25 |
20150180603 | Wavelength-Selective Cross-Connect Device Having a Variable Number of Common Ports - A configurable wavelength-selective cross-connect (WSXC) device having an array of optical ports in which at least some of the ports are configurable to operate as common ports or as plural ports. The configurable WSXC device includes a MEMS mirror array whose mirrors are tiltable in a manner that enables, e.g., reconfigurations of the configurable WSXC device that result in a change of the number of common ports therein. In one possible configuration, the configurable WSXC device can operate as 1×M | 2015-06-25 |
20150180604 | UNIDIRECTIONAL MULTICAST SYSTEM - A system for transmitting a message from a source entity to a target entity, the system including an input unit connected to the source entity in order to transmit the message via an optical transmission device to an output unit re-directing the message to the target entity. The optical transmission device is configured to transmit the message unidirectionally from the input unit to the output unit; and duplicate an optical input system containing the message into at least two optical output signals each containing the message to be transmitted to the output unit. | 2015-06-25 |
20150180605 | METHOD FOR THE ADAPTIVE CONFIGURATION OF THE TRANSMISSION SPECTRUM IN WDM-PONS - A method for adaptive configuration of a transmission signal in a coherent Wavelength-Division Multiplexing-Passive Optical Network (WDM-PON) having an optical line termination and a plurality of end nodes includes: (a) generating, by at least m lasers, the transmission signal; (b) monitoring the ka active end nodes; (c) if the number of active end nodes is reduced to k | 2015-06-25 |
20150180606 | OPTICAL LINE TERMINAL ARRANGEMENT, APPARATUS AND METHODS - A wavelength division multiplexed optical communication system includes a plurality of optical line terminals which may be part of separate in service networks, each having a line interface and an all-optical pass-through interface including a plurality of pass-through optical ports, and each also including a plurality of local optical ports which are connectable to client equipment and an optical multiplexer/demultiplexer for multiplexing/demultiplexing optical wavelengths. The optical multiplexer/demultiplexer may include one or more stages for inputting/outputting individual wavelengths or bands of a predetermined number of wavelengths, or a combination of bands and individual wavelengths. At least one of the pass-through optical ports of an optical line terminal of one network may be connected to at least one of the pass-through optical ports of an optical line terminal of another network to form an optical path from the line interface of the optical line terminal of the one network to the line interface of the optical line terminal of the another network to form a merged network. The use of such optical line terminals allows the upgrading and merging of the separate networks while in service. | 2015-06-25 |
20150180607 | Parallel Processing of Overlapping Subsequences to Generate Soft Estimates - A receiver system and method for recovering information from a symbol data sequence Y. The symbol data sequence Y corresponds to a symbol data sequence X that is transmitted onto the channel by a transmitter. The symbol data sequence X is generated by the transmitter based on associated information bits. At the receiver, a set of two or more processors operate in parallel on two or more overlapping subsequences of the symbol data sequence Y, where each of the two or more overlapping subsequences of the symbol data sequence Y corresponds to a respective portion of a trellis. The trellis describes redundancy in the symbol data sequence Y. The action of operating in parallel generates soft estimates for the associated information bits. The soft estimates are useable to form a receive message corresponding to the associated information bits. | 2015-06-25 |
20150180608 | END OF COMMUNICATION DETECTION - An apparatus for detecting the end of a communication is disclosed. The apparatus includes an interface circuit for receiving an encoded signal and a carrier signal recovery circuit coupled to an output of the interface circuit. The carrier signal recovery circuit is configured to output a carrier signal of the encoded signal and a second signal that is out of phase with the carrier signal. The apparatus also includes a decoding circuit configured to decode the encoded signal as a function of both the encoded signal and the carrier signal output by the carrier signal recovery circuit. The apparatus also includes a detection circuit configured to detect an indication of an end of a communication in the encoded signal as a function of both the encoded signal and the second signal. | 2015-06-25 |
20150180609 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AN APPLICATION LAYER-FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA COMMUNICATION SYSTEM - A method is provided for transmitting an Application Layer-Forward Error Correction (AL-FEC) packet by an AL-FEC packet transmission apparatus in a multimedia communication system. AL-FEC packets are generated. The AL-FEC packets are transmitted to an AL-FEC packet reception apparatus. Each of the AL-FEC packets includes an AL-FEC codeword symbol and an AL-FEC header, and the AL-FEC codeword symbol is one of AL-FEC codeword symbols included in an AL-FEC codeword block. The AL-FEC header includes order information indicating an order of an AL-FEC codeword symbol into which the AL-FEC header is inserted among the AL-FEC codeword symbols included in the AL-FEC codeword block. | 2015-06-25 |
20150180610 | TRANSMISSION DEVICE AND DISTORTION COMPENSATION METHOD - A storage unit stores a first lookup table including a plurality of correction coefficients for I codes, and stores a second lookup table including a plurality of correction coefficients for Q codes. Each of the correction coefficients for I codes and each of the correction coefficients for Q codes are complex numbers. A distortion compensation unit compensates, with one of the plurality of correction coefficients for I codes, distortion of an I code of a transmission signal to generate a first input signal, outputs the first input signal to an SCPA for I codes. The distortion compensation unit compensates, with one of the plurality of correction coefficients for Q codes, distortion of a Q code of the transmission signal to generate a second input signal, and outputs the second input signal to an SCPA for Q codes. | 2015-06-25 |
20150180611 | Methods And Apparatus For Extracting Symbols From An SC-FDMA Digital Communications Signal Using A Maximum Likelihood Detector - A method and system are described for applying MLD detection to SC-FDMA data streams. Embodiments obtain initial estimates of at least some symbols encoded within an SC-FDMA data input using a non-MLD algorithm, and then use the initial estimates to reduce the search space and the MLD complexity. In addition, the reduced complexity MLD (“RC-MLD”) is applied only to a limited search window within the digital communication input, thereby modeling only a subset of the symbols included in the digital communication input. The MLD complexity is thereby reduced sufficiently for an RC-MLD decoder to simultaneously model and extract a plurality of the symbols included in the data input. Symbols initially decoded by the non-MLD algorithm can be subtracted from the data input in a serial interference cancelling module. This cancellation can be applied successively in a turbo-loop. | 2015-06-25 |
20150180612 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A BROADCASTING/COMMUNICATION SYSTEM - A method and an apparatus for encoding, transmitting, and receiving signaling information in a broadcasting/communication system are provided. The method includes generating the signaling information which comprises a plurality of pieces; determining a number of coded blocks to which the signaling information is to be encoded, based on a number of bits of the signaling information and a number of encoder input information bit; segmenting each piece of the signaling information based on the number of the coded blocks; constructing input information bits of each coded block to include segmented parts of each piece of the signaling information; encoding the input information bits to each coded block; and transmitting each coded block. | 2015-06-25 |
20150180613 | DISCARDING OF HYBRID AUTOMATIC REPEAT REQUEST (HARQ) PROCESSES - A method of wireless communication includes receiving an uplink grant for one or more pending HARQ processes waiting to perform a retransmission. The method also includes selecting each pending HARQ process that has not received a NACK. The method further includes terminating an oldest selected HARQ process when the uplink grant is insufficient to perform the retransmission for the plurality of pending HARQ processes. | 2015-06-25 |
20150180614 | Method And Apparatus For Improved Data Communication In Cellular Access Systems - A method for use in a cellular access system is disclosed. The system includes a first transceiver and a second transceiver, wherein the first transceiver sends and receives data blocks to and from the second transceiver, and the first transceiver is considered a reporting party with respect to the second transceiver. The method involves sending a transmission comprising a report to the second transceiver, said report comprising information on whether or not data blocks have been received successfully, wherein said report is sent together with data to the second transceiver. The contents of the report are decided using a priority rule according to which an oldest data block which has been detected as received in error, and whose status has not been reported since the error was detected, is given priority. | 2015-06-25 |
20150180615 | POWER GRANT USE FOR HARQ RETRANSMISSION - A method of wireless communication includes determining when all HARQ processes are associated with packages for retransmission. The method also includes determining when no new packages are pending in a UE buffer and when a received grant is insufficient for retransmission of any of the HARQ processes. The method further includes determining possible block sizes supported by each allocated time slot identified in the received grant. The method still further includes retransmitting the package of a selected HARQ process with maximum available power. | 2015-06-25 |
20150180616 | METHOD FOR OPERATING BUFFER FOR DEVICE-TO-DEVICE (D2D) COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - A method for a terminal transmitting/receiving a signal with device-to-device (D2D) on the basis of a hybrid automatic repeat and request (HARQ) in a wireless communication system, comprises the steps of: receiving allocation information for establishing a wireless resource for a specific HARQ process from at least one first HARQ process as a wireless resource for a second HARQ process; and transmitting/receiving the signal with an external terminal by using the wireless resource of the second HARQ process, wherein a soft buffer, which is linked to the second HARQ process, is a reestablished soft buffer that is linked to the at least one HARQ process, in accordance with the allocation information. | 2015-06-25 |
20150180617 | METHOD OF IMPLEMENTING AUTOMATICALLY RETRANSMISSION FEEDBACK IN A UE IN A CARRIER AGGREGATION NETWORK - The invention proposes a method of implementing hybrid automatically retransmission feedback in a UE in a carrier aggregation network, wherein, the network comprises a self-scheduling primary cell and a secondary cell, and the method comprises: determining a reference frame configuration based on the frame configuration of the primary cell and the frame configuration of the secondary cell, wherein, the reference frame configuration is the type 5; determining a first quantity of downlink subframes of the secondary cell needing to be fed back in uplink subframes, according to the frame configuration of the secondary cell and downlink subframes, associated with uplink subframes, corresponding to the reference frame configuration; receiving from a base station a parameter about the number of downlink subframes fed back, and calculating a second quantity of downlink subframes needing to be fed back in the uplink subframes, based on the parameter; determining an actual quantity of downlink subframes actually fed back, based on the first quantity and the second quantity; implementing automatically retransmission feedback for downlink frames of the actual quantity in the physical shared channel, adjusted by uplink grants, in the uplink subframes. | 2015-06-25 |
20150180618 | ONLINE DESIGN VALIDATION FOR ELECTRONIC DEVICES - A computer implemented process is described for testing multiple electronic devices under test (DUTs). A design test pattern or command/instruction is generated with an electronic design automation tool (EDA). The generated design test pattern and command/instruction is sent directly to an automated test equipment apparatus (ATE) over a UNIX or scripting language based, and/or a network based, communication pipeline. The ATE converts the sent design test pattern to an instance of the test pattern directly executable by the ATE. The ATE apparatus inputs test signals to each of the multiple electronic DUTs based on the executable test pattern. The ATE apparatus then receives, from each of the multiple electronic DUTs, a test result based on the input test signals. The ATE returns the received test result, and a report of an action responsive to the command/instruction to the EDA tool, which may then process the test results and report. | 2015-06-25 |
20150180619 | TTI Bundling for Downlink Communication - This disclosure relates to TTI bundling for downlink communication. According to one embodiment, a base station and a wireless device may establish a wireless communication link. The base station may determine to enable TTI bundling for downlink communication for at least one carrier of the wireless communication link. The base station may provide an indication to the wireless device to enable TTI bundling for downlink communication for the determined carrier(s) of the wireless communication link. The base station may subsequently transmit TTI bundle downlink communications to the wireless device via the determined carrier(s). | 2015-06-25 |
20150180620 | COMMUNICATIONS SYSTEM, WIRELESS BASE STATION, WIRELESS TERMINAL, AND COMMUNICATIONS METHOD - A communications system in which, in each cell, a common reference signal to wireless terminals of the cell is transmitted at a first timing at a frequency that is based on identification information of the cell, and the communications system includes a wireless base station that transmits the common reference signal at the first timing, and transmits at a second timing that is different from the first timing, a wireless-terminal-specific reference signal to the wireless terminals of the cell of the wireless base station and a control signal to the wireless terminals of the cell of the wireless base station, concurrently at different frequencies; and a wireless terminal that based on the wireless-terminal-specific reference signal transmitted by the wireless base station, demodulates the control signal transmitted by the wireless base station. | 2015-06-25 |
20150180621 | DATA TRANSMISSION METHOD AND DEVICE - Provided are a data transmission method and device. The method includes: determining, by means of a frequency hopping manner according to a TTI Bundling parameter, a frequency domain position of a physical resource block in a slot for sending a TTI Bundling, wherein a frequency hopping variable i of the frequency hopping manner is determined according to the TTI Bundling parameter by means of one of or a combination of predetermined approaches, where mod is a modulus operation, floor is rounded down operation, n | 2015-06-25 |
20150180622 | MIXED NUMEROLOGY OFDM DESIGN - Methods, systems, and devices are described for hierarchical communications and low latency support within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing. In some examples symbols of different duration may be multiplexed such that they different symbol durations coexist. | 2015-06-25 |
20150180623 | CROSS CARRIER SCHEDULING METHOD AND APPARATUS - A cross carrier scheduling method is provided by a terminal. The terminal receives a control element including cross carrier scheduling configuration information from a base station, and sets a scheduling cell of a secondary cell in accordance with the cross carrier scheduling configuration information. The terminal starts to monitor scheduling information of the secondary cell at the scheduling cell from a time predefined between the base station and the terminal. | 2015-06-25 |
20150180624 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION TO RANDOMIZE INTER-CELL INTERFERENCE IN A MOBILE COMMUNICATION SYSTEM - Methods and apparatuses are provided for transmitting and receiving information. A User Equipment (UE) identifies a sequence based on a Zadoff-Chu sequence and e | 2015-06-25 |
20150180625 | METHOD FOR RECEIVING OR TRANSMITTING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - One embodiment of the present invention discloses a method for receiving a downlink signal in a wireless communication system that supports coordinated multiple-point transmission and reception (CoMP), and the method comprises the steps of: receiving downlink control information that contains a plurality of resource allocation parts from a base station; and acquiring information on whether it can be assumed that an antenna port(s) of a particular reference signal and an antenna port (s) of a demodulation reference signal associated with each of the plurality of resource allocation parts are quasi co-located (QCL). | 2015-06-25 |
20150180626 | DATA TRANSMISSION METHOD AND DEVICE - Provided is a data transmission method and device. The method includes: receiving IQ data from an uplink; according to the mapping of the IQ data in a Common Public Radio Interface (CPRI) basic frame, utilizing at least one storage unit to sequence the IQ data; combining a control word with the sequenced IQ data to form CPRI data, and transmitting the CPRI data. The solution utilizes at least one storage unit to sequence the IQ data, and extracts the sequenced data for a CPRI framing operation. This solution is simple in hardware processing and low in realization complexity. The change and upgrade of the transmission bandwidth of multiple modes (single mode or mixed mode) during system upgrade only occur on software layer without affecting the realization of hardware, thus having good flexibility. | 2015-06-25 |
20150180627 | RESOURCE SCHEDULING FOR DOWNLINK TRANSMISSIONS - A method performed in a network node, of scheduling resources for downlink transmissions to a user equipment, UE, in a heterogeneous wireless communication network including macro nodes and Low Power Nodes, LPNs, in a combined cell deployment, wherein each macro node shares a cell identity with one or more LPNs. The method comprises configuring two or more pilot signals for probing the UE, wherein each pilot signal is configured to be distinguishable from configured one or more other pilot signals. A resource control, RRC, signal is sent to the UE, the RRC signal including information on the configuration of the two or more pilot signals. The network node controls transmission of the two or more pilot signals, wherein transmission of one pilot signal is originated from the macro node and transmission of one or more further pilot signals is originated from respective one or more LPNs. | 2015-06-25 |
20150180628 | METHOD FOR TRANSMITTING REFERENCE SIGNAL TO ANTENNA PORT IN WIRELESS ACCESS SYSTEM - The present invention provides various methods for transmitting a channel state information reference signal (CSI-RS) by varying a transmission period for each antenna port or antenna port group, and also provides apparatuses supporting the methods. The method for receiving a CSI-RS in a wireless access system according to one aspect of the present invention may comprise the steps of: receiving a CSI-RS component information element for setting CSI-RS transmission periods for two or more antenna ports to be mutually different; receiving CSI-RSs for each of the two or more antenna ports based on the CSI-RS component information element; and acquiring channel state information for each of the two or more antenna ports based on the received CSI-RS. | 2015-06-25 |
20150180629 | METHOD AND A SYSTEM FOR PERFORMING VIRTUALIZATION OF A RADIO ACCESS TECHNOLOGY OVER ORTHOGONAL FREQUENCY-DIVISION MULTIPLE ACCESS (OFDMA) WIRELESS NETWORKS AND COMPUTER PROGRAM PRODUCTS THEREOF - Method, system and computer programs for performing virtualization of a radio access technology over OFDMA wireless networks, | 2015-06-25 |
20150180630 | Scattered Pilot Pattern And Channel Estimation Method For MIMO-OFDM Systems - A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain. | 2015-06-25 |
20150180631 | Method and Apparatus for Transmitting Reference Signal in Device-to-Device (D2D) Communication - A method and an apparatus for transmitting information in device-to-device (D2D) communication are provided, where the method includes determining, by a first user equipment, in a communication resource for D2D communication, a target resource used to bear a reference signal (RS), where the target resource is according to characteristic information used in selecting the target resource, and the characteristic information used in selecting the target resource includes at least one of the following two items: characteristic information used to uniquely identify the first user equipment, and characteristic information used to uniquely identify a second user equipment that performs D2D communication with the first user equipment; and transmitting, by the first user equipment, the RS to the second user equipment using the target resource. | 2015-06-25 |
20150180632 | COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND COMMUNICATION METHOD - The present invention is designed to provide a communication system, a base station apparatus, a terminal apparatus and a communication method that can support the diversification of communication. In the communication system of the present invention, in which a terminal apparatus receives a downlink data signal transmitted from a base station apparatus (eNB) in a radio resource region for a downlink data signal, the base station apparatus transmits a terminal-specific reference signal in the radio resource region for the downlink data signal to the terminal apparatus (UE), and the terminal apparatus measures channel quality information based on the terminal-specific reference signal and transmits the measured channel quality information to the base station apparatus. | 2015-06-25 |
20150180633 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING FLOODING SIGNAL IN WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention relates to a method for transmitting and receiving a signal by a second UE in a wireless communication system, comprising the steps of: receiving a message from a first UE; and determining whether to participate in flooding of the received message, wherein if it is determined to participate in the flooding, the second UE transmits the received message a preset number of times through a preset resource region for a third UE, and a reference signal related to the message transmitted for the third UE is common to one or more UEs which have received the message from the first UE and participate in the flooding. | 2015-06-25 |
20150180634 | WIRELESS COMMUNICATION TERMINAL DEVICE, WIRELESS COMMUNICATION BASE DEVICE, AND METHOD FOR GENERATING CSI - The purpose of the present invention is to be able to simultaneously generate three or more sets of CSI within a predetermined time interval, without degrading the accuracy of the CSI, to achieve CoMP control for flexible switching of base stations. At predetermined intervals or at timing coincident with reception of trigger information, a generation unit uses a CSI-RS resource to measure a desired signal component and interference component, and generate CSI. A transmission unit transmits control information including the CSI. During a given interval (for example, during four subframes) following reception of trigger information, the generation unit does not measure the interference component, instead using the most recent previously measured interference component, to measure the channel quality. | 2015-06-25 |
20150180635 | MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION METHOD USED IN A MOBILE COMMUNICATION SYSTEM - A mobile communication system performs communication of user data directly among a plurality of radio terminals without passing through a radio base station. The communication of user data directly performed among the plurality of radio terminals is performed by using apart of radio resources assigned to the mobile communication system. The plurality of radio terminals comprise: a transmission-side terminal that transmits the user data; and a reception-side terminal that receives the user data. The reception-side terminal transmits to a radio base station in a connected state where a radio connection is established with the reception-side terminal, a transmission acknowledgment signal indicating whether the user data transmitted from the transmission-side terminal has been received. | 2015-06-25 |
20150180636 | LTE HIERARCHICAL BURST MODE - Methods, systems, and devices are described for hierarchical communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing. | 2015-06-25 |
20150180637 | Method and System for Dynamic Ack/Nack Repetition for Robust Downlink Mac PDU Transmission in LTE - A method and apparatus for dynamic acknowledgement repetition for a downlink medium access control packet data unit transmission ‘MAC PDU’ requiring multiple acknowledgements, the method having the steps of: receiving the downlink MAC PDU requiring multiple acknowledgements; and utilizing a differentiating factor and acknowledgement scheme, sending the multiple acknowledgements. | 2015-06-25 |
20150180638 | METHOD FOR TRANSMITTING UPLINK SIGNALS - A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority. | 2015-06-25 |
20150180639 | MITIGATING TRANSMISSION INTERFERENCE BETWEEN DIGITAL RADIO AND BROADBAND COMMUNICATION DEVICES - A broadband device ( | 2015-06-25 |
20150180640 | METHOD, APPARATUS, AND SYSTEM FOR PROCESSING INTERFERENCE SIGNAL - Embodiments of the present invention provide a method, an apparatus, and a system for processing an interference signal, so as to eliminate an interference signal in a full duplex multi-antenna system. The method includes: receiving a radio signal, where the signal includes a self-interference signal of a transmit antenna, and the self-interference signal includes a first self-interference signal, and a second self-interference signal; performing primary interference cancellation processing, by using a first reference signal, on the received signal to eliminate the first self-interference signal; and performing secondary interference cancellation processing, by using a second reference signal, on the signal after the primary interference cancellation processing to eliminate the second self-interference signal. | 2015-06-25 |
20150180641 | COMMUNICATION APPARATUS, TIME SYNCHRONIZATION SYSTEM, AND TIME SYNCHRONIZATION METHOD - A communication apparatus ( | 2015-06-25 |
20150180642 | DATA RECEIVERS AND METHODS OF IMPLEMENTING DATA RECEIVERS IN AN INTEGRATED CIRCUIT - A data receiver implemented in an integrated circuit is described. The data receiver comprises an input receiving a data signal; a first equalization circuit coupled to receive the data signal, wherein the first equalization circuit is used to receive the data of the data signal; and a second equalization circuit coupled to receive the data signal, wherein the second equalization circuit is used to adjust a clock phase offset. | 2015-06-25 |
20150180643 | Signal Generator, Electronic System Comprising the Signal Generator and Method of Generating Signals - A quadrature phase signal generator comprises a relative delay unit, a phase detector, a first amplifier and a loop filter. The relative delay unit delays differential input signals and generates four delayed signals. The phase detector generates quadrature four phase output signals, a first voltage signal and a second voltage signal according to the four delayed signals. A difference of the first and the second voltage signals indicates a phase error of the quadrature four phase output signals. The first amplifier amplifies the voltage difference of the first and the second voltage signals. The loop filter filters the amplified voltage difference and generates a tuning voltage signal. The loop filter is further communicatively coupled to the relative delay unit. The relative delay unit adjusts a delay of the quadrature four phase delayed signals according to the tuning voltage signal. | 2015-06-25 |
20150180644 | CLOCK AND DATA RECOVERY CIRCUIT - A clock and data recovery (CDR) circuit employing zero-crossing linearizing (ZCL) technique. The circuit including a voltage controlled oscillator (VCO), an inject-locked divider (ILD), a variable delay unit, a linearized loop, a bang-bang loop, and a loop filter (LP). The differential clock generated by VCO passes through ILD for frequency dividing and variable delay unit to generate 8-phase clocks. Then using these clocks, the PDs over-sample the input data, followed by synchronization and logic operation to control the CPs output current pulses. These currents filtered by LP control the VCO to finish the loop. The circuit recovers 4 channel data and corresponding clocks of the input with low power broken-down and preferable jitter performance and locking property. | 2015-06-25 |
20150180645 | Using a Single Phase Error Algorithm for Coarse and Fine Signal Timing Synchronisation - Rather than using separate sample rate offset and phase offset estimation algorithms for coarse timing synchronisation and fine timing synchronisation of a receiver timing, respectively, one phase error algorithm can be used for both the coarse and fine timing synchronisation. In order to perform coarse timing synchronisation the phase error indications sampled over a sampling period are used to form an error vector, and a Fourier transform can then be applied to the error vector. An analysis of the Fourier transform of the error vector can be used to determine a frequency component identifying an offset between the receiver frequency and the signal frequency. The frequency of the receiver timing can then be adjusted in accordance with the identified offset, thereby performing the coarse timing synchronisation. Once the coarse timing synchronisation has been applied, the same phase error algorithm may be used, without the Fourier transform, to implement the fine timing synchronisation. | 2015-06-25 |
20150180646 | Selectable-tap Equalizer - A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is coupled to the buffer to select a subset of data values from the plurality of data values according to a select value. The equalizing circuit is coupled to receive the subset of data values from the select circuit and is adapted to adjust, according to the subset of data values, a signal level that corresponds to a data signal transmitted on the signaling path during a second time interval. | 2015-06-25 |
20150180647 | APPARATUS AND METHOD FOR SYNCHRONIZING CLOCKS BETWEEN DEVICES OF MAGNETIC RESONANCE IMAGING (MRI) SYSTEM - A method of synchronizing clocks between a central controlling unit and a radio frequency (RF) coil which are wireles sly connected to each other in a magnetic resonance imaging (MRI) system, which includes receiving a first clock from the central controlling unit, synchronizing a second clock of the RF coil with a received first clock, and discontinuing the receiving of the first clock from the central controlling unit when the second clock is synchronized with the first clock. | 2015-06-25 |
20150180648 | CLOCK RECOVERY METHOD AND APPARATUS - The invention relates to a phase rotation method for a clock recovery, comprising the steps of: providing a timing estimation value that indicates for each input data symbol at least whether an input data sample has been sampled early or late by a sampling clock signal; generating a phase offset value indicating a phase rotation of the sampling clock signal based on the timing estimation value; modifying the timing function value based on a change of the phase offset value, resulting in the timing estimation value. | 2015-06-25 |
20150180649 | COMPACT LOW-POWER FULLY DIGITAL CMOS CLOCK GENERATION APPARATUS FOR HIGH-SPEED SERDES - A high-speed clock generator device includes a phase-interpolator (PI) circuit, a smoothing block, and inverter-based low-pass filters. The PI circuit receives a multiple clock signals with different phase angles and generates an output clock signal having a correct phase angle. The smoothing block smooths the clock signals with different phase angles and generates a number of smooth clock signals featuring improved linearity. The inverter-based low-pass filters filter harmonics of the clock signals with different phase angles. | 2015-06-25 |
20150180650 | SYNCHRONISATION METHOD AND DEVICE FOR TRANSMIT AND RECEIVE SYMBOLS OF ALL-DIGITAL RECEIVER - A synchronisation method and device for transmit and receive symbols of an all-digital receiver. The method comprises the steps of: after receiving a sampling signal sent by a baseband processing chip, the clock signal of which is provided by a second clock source, a digital signal processor (DSP), the clock signal of which is provided by a first clock source, measuring a phase shift between a local sampling symbol and an air interface symbol, and acquiring the phase shift amount; according to the phase shift amount, adjusting a sampling opportunity for the sampling of a digital-analogue/analogue-digital converter; and when the sampling opportunity for the sampling of the digital-analogue/analogue-digital converter has been adjusted, adjusting an interface clock for data transmitting and receiving of the DSP so as to enable the data transmitting and receiving of the DSP to be synchronised with the sampling. | 2015-06-25 |
20150180651 | CLOCK DATA RECOVERY CIRCUIT MODULE AND METHOD FOR GENERATING DATA RECOVERY CLOCK - A clock data recovery circuit module including a clock recovery circuit, a frequency comparison circuit and a signal detecting circuit is provided. The clock recovery circuit is configured to output a data recovery stream and a data recovery clock based on an input signal and a clock signal. The frequency comparison circuit is coupled to the clock recovery circuit. The frequency comparison circuit is configured to compare a frequency difference between the data recovery clock and the clock signal to adjust the frequency of the clock signal based on a comparison result. The signal detecting circuit is coupled to the frequency comparison circuit. The signal detecting circuit is configured to receive and detect the input signal, and the signal detecting circuit determines whether to enable the frequency comparison circuit according to the detection result. Furthermore, a method for generating a data recovery clock is also provided. | 2015-06-25 |
20150180652 | MODULAR EXPONENTIATION OPTIMIZATION FOR CRYPTOGRAPHIC SYSTEMS - A processing device, such as logic on an integrated circuit may identify a cryptographic message stored in a first register. The processing device may determine a plurality of components for a second power of the cryptographic message using a plurality of components of the cryptographic message. The processing device may determine the plurality of components for the second power of the cryptographic message without storing the entire second power of the cryptographic message. Further, the processing device may determine a third power of the cryptographic message using modular arithmetic. The processing device may determine the third power by transforming the plurality of components for the second power of the cryptographic message and the plurality of components of the cryptographic message. | 2015-06-25 |
20150180653 | Module for "Machine-to-Machine" Communications using Public Key Infrastructure - Methods and systems are provided for efficient and secure “Machine-to-Machine” (M2M) between modules and servers. The module and server can utilize public key infrastructure (PKI) such as public keys to encrypt messages. The module and server can use private keys to generate digital signatures for datagrams sent and decrypt messages received. The module can internally derive pairs of private/public keys using cryptographic algorithms and a set of cryptographic parameters. The module can authenticate the submission of derived public keys. The module and server can mutually derive shared secret keys using the PKI keys. Data can be encrypted and decrypted using a set of cryptographic algorithms, the secret shared keys, and the set of cryptographic parameters. A module can send and receive sets of cryptographic parameters in order to flexibly and securely communicate with a variety of servers over time. | 2015-06-25 |
20150180654 | Secure Provision of a Key - The embodiments relate to a method and a digital circuit area for securely providing a key using a request unit and a provision unit. In this case, a key is derived from parameters, at least one of which is used for the key derivation in a non-predefinable manner by the request unit. In this case, the key derivation is carried out in a digital circuit area in which the request unit and the provision unit are implemented. | 2015-06-25 |
20150180655 | DATA STORING AND READING METHODS, APPARATUSES AND DEVICES - The present invention discloses data storing and reading methods, apparatuses and devices. The method includes: performing encryption processing on data based on a key when it is determined that a storage mode of the data in a user terminal is a set default hidden storage mode; and it is determined that a user who sends the operation instruction is an authorized user; and storing encryption-processed data in a storage area in the user terminal, where the storage area is used to store encrypted data. In this way, the following problems can be properly solved: application of data stored in a user terminal is limited to some extent, and convenience of reading the stored data is relatively poor or security of the data stored in the user terminal is relatively low. | 2015-06-25 |
20150180656 | Using key material protocol services transparently - An application that consumes key management information (e.g., keys and certificates) through a conventional keystore API is configured to recognize a new keystore type. In addition, the services of that API are pointed to a management server component associated with a key management protocol (e.g., KMIP), and a client component of the key management protocol is instantiated as a “semi-remote” keystore in association with the application. Once configured to use the new keystore type, the consuming application uses the keystore API in a conventional manner, but calls to the new keystore type are directed to the KMIP client. The client intercepts these calls and then interacts with the KMIP server on behalf of the consuming application, and without the application being aware of the interaction over the KMIP client-server API. This approach enables the consuming application to take advantage of the full benefits provided by the key management protocol transparently. | 2015-06-25 |
20150180657 | TECHNIQUES FOR ENFORCING A DEPTH ORDER POLICY FOR GRAPHICS IN A DISPLAY SCENE - Various embodiments are generally directed an apparatus and method for processing an encrypted graphic with a decryption key associated with a depth order policy including a depth position of a display scene, generating a graphic from the encrypted graphic when the encrypted graphic is successfully decrypted using the decryption key and assigning the graphic to a plane at the depth position of the display scene when the encrypted graphic is successfully decrypted. | 2015-06-25 |
20150180658 | FAST RECOVERY FROM CIPHERING KEY MISMATCH - A method includes, in a receiver, identifying an event that involves replacement of a ciphering key used by the receiver. In response to the event, at least a portion of a payload of an Internet Protocol (IP) packet received by the receiver is deciphered using the replaced ciphering key. A verification is made whether a predefined location in the deciphered portion of the IP packet, which is expected to specify an IP version of the IP packet, indeed specifies a valid IP version. Upon detecting that the location does not specify the valid IP version, a recovery process that recovers from improper replacement of the ciphering key is initiated. | 2015-06-25 |
20150180659 | APPARATUS AND METHOD FOR GIVING THE COMPRESSED ENCRYPTION FUNCTIONALITY TO INTEGER-BASED HOMOMORPHIC ENCRYPTION SCHEMES - The present invention relates to a compressed encryption and decryption apparatus comprising: an interface receiving a public key, a secret key and a compression ratio; a memory storing instructions for encryption and decryption of plaintexts; and a processor encrypting and decrypting plaintexts according to the instruction, wherein the instruction comprises instructions performing; generating an extended public key and an extended secret key by revising the public key and the secret key according to the compression ratio; outputting the extended public key; receiving compressed ciphertext; and decrypting the compressed ciphertext using modulo operation for multiplication of the extended secret key and the compressed ciphertext. | 2015-06-25 |
20150180660 | USE OF 32-BIT RANDOM NUMBERS TO PRODUCE CIPHER KEY STREAM FOR 8-BIT DATA STREAM - A method of enciphering information comprises generating five index values by performing modulo division on a 32-bit binary input value, identifying five 8-bit output patterns based on the five index values, and enciphering or deciphering five bytes of text using the five 8-bit output patterns. | 2015-06-25 |
20150180661 | RE-ENCRYPTION KEY GENERATOR, RE-ENCRYPTION DEVICE, ENCRYPTION DEVICE, DECRYPTION DEVICE, AND PROGRAM - A re-encryption key generator according to an embodiment generates a re-encryption key to obtain re-encrypted data that can be decrypted by a second private key of a second user device by re-encrypting ciphertext obtained by encrypting plaintext by a first public key of a first user device without decryption. The re-encryption key generator stores a first private key corresponding to the first public key. The re-encryption key generator stores a second re-encryption key generation key of the second user device that is different from a second public key corresponding to the second private key. The re-encryption key generator generates the re-encryption key based on the first private key and the second re-encryption key generation key. | 2015-06-25 |
20150180662 | SOFTWARE KEY UPDATING METHOD AND DEVICE - Provided in an embodiment of the present invention are a software key updating method and device. A trusted client device receives key information and verification information corresponding to the software and transmitted by a server, the key information containing a to-be-updated first software public key signature and a new second software public key signature, and the verification information containing software verification information; if a valid first software public key signature corresponding to the software and stored in the trusted client device is consistent with the received first software public key signature, then checking whether the software verification information is valid; and if the software verification information is valid, then updating the valid first software public key signature corresponding to the software and stored in the trusted client device as a second software public key signature. | 2015-06-25 |
20150180663 | METHOD AND APPARATUS FOR PERFORMING SECURE VOICE CALL - A method and apparatus for performing a secure voice call is provided. The method includes generating an encryption key to be used in the secure voice call, encapsulating the encryption key using a pre-agreed upon master key, generating at least one dedicated frame including the encapsulated encryption key, transmitting the at least one dedicated frame in place of at least one voice frame generated by a vocoder to a counterpart User Equipment (UE), receiving an Acknowledgement (ACK) frame indicating successful reception of the encryption key from the counterpart UE, encrypting the at least one voice frame generated by the vocoder using the encryption key and transmitting the encrypted at least one voice frame to the counterpart UE, after receiving the ACK frame, and decrypting the at least one voice frame received from the counterpart UE using the encryption key, after receiving the ACK frame. | 2015-06-25 |
20150180664 | OPTIMIZED HARDWARD ARCHITECTURE AND METHOD FOR ECC POINT ADDITION USING MIXED AFFINE-JACOBIAN COORDINATES OVER SHORT WEIERSTRASS CURVES - An optimized hardware architecture and method introducing a simple arithmetic processor that allows efficient implementation of an Elliptic Curve Cryptography point addition algorithm for mixed Affine-Jacobian coordinates. The optimized architecture additionally reduces the required storage for intermediate values. | 2015-06-25 |
20150180665 | OPTIMIZED HARDWARE ARCHITECTURE AND METHOD FOR ECC POINT DOUBLING USING JACOBIAN COORDINATES OVER SHORT WEIERSTRASS CURVES - An optimized hardware architecture and method introducing a simple arithmetic processor that allows efficient implementation of an Elliptical Curve Cryptography point doubling algorithm for Jacobian coordinates. The optimized architecture additionally reduces the required storage for intermediate values. | 2015-06-25 |
20150180666 | UNIVERSAL HASH FUNCTION COMPUTING DEVICE, METHOD AND PROGRAM - A universal hash function calculation device includes a message register sequentially outputs a message of which the bit number is a prime number and of which the length is such that the smallest primitive root when the bit number is set as the modulo is 2, outputting said message one bit at a time. A cyclic key register cyclically permutates a key having the same number of bits as the message, and sequentially outputs a cyclic key vector obtained as a result of the cyclical permutation. On the basis of the sequentially-output cyclic key vector and a message bit that is sequentially output one bit at a time, a logical product calculation unit outputs the cyclic key vector when the message bit is 1, and outputs an all-zero vector having the same bit number as the cyclic key vector when the message bit is 0. A cumulative sum calculation unit accumulates calculation results having the same number as the output bit number and calculates the exclusive disjunction. | 2015-06-25 |
20150180667 | SECONDARY ELEMENTS IN A FUZZY VAULT ENCODING SCHEME - The description relates in particular to a method for encoding information represented in the form of a function P, and to a corresponding method for decoding information. The encoding comprises the encoding of secondary information. These methods may be implemented within a context of biometric enrollment and (respectively) biometric authentication. The description also relates to an electronic device, a computer program, and a storage medium for the implementation of such methods. | 2015-06-25 |
20150180668 | METHOD FOR VERIFYING CORRECT ENCRYPTION KEY UTILIZATION - Methods and systems are provided for verifying use of encryption keys. A request for verification information may be sent by a network element (e.g., server), with the request comprising combination of one or more identifiers, the combination associated with a particular I/O operation. The request may be sent to another element, which may be a centralized encryption management element (e.g., management server). In response to the request, key use verification information generated for the particular I/O operation may be received, and may be used thereafter in validating a corresponding encryption key, which may be used during data encryption or decryption, based on the received key use verification information and locally generated verification information associated with the particular I/O operation. The one or more identifiers include at least one of a target identifier, a LUN identifier, and a LBA range identifier. | 2015-06-25 |
20150180669 | COMPONENT MANAGEMENT VIA SECURE COMMUNICATIONS - Technologies are generally described for establishing secure communications to manage components of a control system. In some examples, upon receiving a request from a component to join a cluster of components, a class and instance of the component may be verified to authorize the component. A command to be transmitted from the component to another component of the cluster may be marked with a signature, where restrictions may be placed on a type of command that a particular class of component may transmit to one or more other classes of components. Based on the signature, a secure communication path between the components may he established by creating an encrypted virtual private network (VPN). The command may then be transmitted from the component to the other component through the secure communication path. | 2015-06-25 |
20150180670 | IDENTIFICATION OF CONTENT BY METADATA - Systems and methods for identifying content in electronic messages are provided. An electronic message may include certain content. The content is detected and analyzed to identify any metadata. The metadata may include a numerical signature characterizing the content. A thumbprint is generated based on the numerical signature. The thumbprint may then be compared to thumbprints of previously received messages. The comparison allows for classification of the electronic message as spam or not spam. | 2015-06-25 |
20150180671 | AUTHENTICATION SYSTEM, METHOD FOR AUTHENTICATION, AUTHENTICATION DEVICE AND DEVICE TO BE AUTHENTICATED - An authentication system includes a device to be authenticated and an authentication device. The device to be authenticated includes a first communication unit configured to transmit an instruction code and a first comparison value, and to receive a random number, a first memory unit, and a first control unit configured to create the first comparison value based on the random number, the common secret identification information and the instruction code. The authentication device includes a second communication unit configured to transmit the random number and to receive the instruction code and the first comparison value, a second memory unit, and a second control unit configured to generate the random number, create a second comparison value, compare the first comparison value with the second comparison value, and execute the instruction code when the first comparison value matches with the second comparison value. | 2015-06-25 |
20150180672 | Relay System and Switching Device - When IGMP packets are relayed to a predetermined router (L3SW), first and second L2SWs update their own snooping tables by snooping. Also, the first L2SW acquires a correspondence relation retained in the snooping table of the second L2SW through a control plane and registers it to the snooping table of the first L2SW. Then, when the first L2SW receives a multicast packet whose destination is a multicast group, the first L2SW extracts corresponding IP addresses based on its own snooping table and converts the multicast packet into unicast packets whose destinations are the IP addresses. | 2015-06-25 |
20150180673 | Relay System and Switching Device - A first L2SW acquires a correspondence relation between a multicast group and a representative IP address retained in a snooping table of a second L2SW through a control plane, and registers the correspondence relation to a snooping table of the first L2SW. When the first L2SW receives a multicast packet whose destination is a multicast group, the first L2SW extracts a corresponding representative IP address of the other L2SW based on the snooping table of the first L2SW, and converts the multicast packet into a unicast packet whose destination is the extracted representative IP address. When the destination representative IP address contained in the unicast packet is its own representative IP address, the second L2SW converts the unicast packet into multicast packets. | 2015-06-25 |
20150180674 | SYSTEM AND METHOD FOR ESTABLISHING AND MANAGING VIDEO AND AUDIO COMMUNICATION SESSIONS USING CONTEXT-BASED INFORMATION IN INTERACTIVE SERVICES - Techniques for initiating and managing videoconferences in interactive service applications is described, including using contextual information to identify a group of users that are to participate in an ad-hoc videoconferencing session. | 2015-06-25 |
20150180675 | Optimization Of Rules Used For Prevention Of Duplication And Looping Of Multicast Traffic Within A Multi-Homed Cluster Of Backbone edge Bridges In A Shortest Path bridging multicast Network - A method, apparatus and computer program product for prevention of duplication and looping of multicast traffic within a multi-homed cluster of backbone edge bridges is presented. Multicast traffic is received on a first Access device (AD). The multicast traffic is forwarded from the first AD to a first Backbone edge Bridge (BEB). Any available Backbone Virtual Local Area Network (BVLAN) is chosen to forward the multicast traffic into a transport network by the first BEB. The multicast traffic is received at a second BEB from said first BEB. A determination is made whether a nickname in a packet of the multicast traffic is a nickname of the first BEB and when the nickname in the packet matches a nickname of the first BEB then abstaining from making copies of said packet for said first AD and said second AD. | 2015-06-25 |
20150180676 | LTE EMBMS SERVICE ENHANCEMENT - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be an MCE. The apparatus receives a plurality of channel status reports from respective eNBs. In an aspect, each channel status report includes channel information associated with a respective eNB for one of a plurality of channels in a contention based radio frequency band. The apparatus selects a channel for an eNB among the plurality of channels based on the plurality of channel status reports. In an aspect, the selected channel is available to be used for an eMBMS. The apparatus prompts the eNB to provide the eMBMS using the selected channel. | 2015-06-25 |
20150180677 | Powerline Communications Automotive Network - An embodiment is a powerline communications (PLC) apparatus including a communications interface that implements a first communication protocol including of a transceiver that communicates over an electrical power distribution wiring of a vehicle. The first communication protocol includes a powerline communications automotive network (PLCAN) delimiter type (DT) (PLCAN-DT), and a PLCAN variant length field in a frame control comprising payload length, a number of symbols used, a PHY block size, and a number of repetitions used, wherein broadcast addressing is used in the network to transmit messages. | 2015-06-25 |
20150180678 | ACCESSING DEVICES VIA AN ELECTRONIC PROGRAM GUIDE - A map that associates each device in a set of devices, and each channel of media content in a set of channels of media content, with a respective channel number in a set of channel numbers. Input is received that includes a channel number. Information is retrieved related to one of the devices according to the channel number. | 2015-06-25 |
20150180679 | UNIDIRECTIONAL CODING FOR BIDIRECTIONAL DATA BUS RADIO FREQUENCY INTERFERENCE MITIGATION - An integrated circuit chip can include an interference mitigator. The interference mitigator can be to modify encoding to generate a cancellation pattern for optimum cancellation of radio frequency interference (RFI) at the effective mid-point of the data bus. The interference mitigator can also be to transmit the generated cancellation pattern across the data bus to cancel the radio frequency interference. | 2015-06-25 |
20150180680 | OVERLAPPING PRIORITY CONTENTION WINDOWS POWER LINE COMMUNICATIONS NETWORKS - Embodiments of a power line communication (PLC) transmitter device for overlapping priority contention windows are presented. A processor is configured to perform a physical channel sense operation to detect an idle channel on a PLC network. A transmitter transmits a normal priority data packet on the channel during a high priority contention window. In another embodiment, a Normal Priority Contention Window (NPCW) is allowed to overlap with a High Priority Contention Window (HPCW). The minimum contention window for the normal priority frames (i.e., NPCW) is equal to or longer than the contention window for high priority frames (i.e., HPCW). By making the NPCW longer than the HPCW, the high priority frames will have a better chance than normal priority frames to get access to the channel on transmission reattempts. | 2015-06-25 |
20150180681 | APPARATUS AND METHOD FOR INTERFERENCE CANCELLATION IN COMMUNICATION SYSTEMS - A system that incorporates the subject disclosure may include, for example, determining channel gains for a group of transmitters based on transmitted training symbols; and performing analog time domain cancellation and digital time domain cancellation responsive to a determination that a total interference does not satisfy a threshold range of the analog-to-digital converter, where the total interference is determined based on the channel gains. Other embodiments are disclosed. | 2015-06-25 |
20150180682 | Turbo Equalisation - A receiver ( | 2015-06-25 |
20150180683 | HIGH-SPEED SERIAL DATA SIGNAL RECEIVER CIRCUITRY - Circuitry for receiving a high-speed serial data signal (e.g., having a bit rate in the range of about 10 Gpbs and higher) includes a two-stage, continuous-time, linear equalizer having only two serially connected stages. Phase detector circuitry may be provided for receiving the serial output of the equalizer and for converting successive pairs of bits in that output to successive parallel-form bit pairs. Further demultiplexing circuitry may be provided to demultiplex successive groups of the parallel-form bit pairs to final groups of parallel bits, which can be quite large in terms of number of bits (e.g., 64 parallel bits). Another aspect of the invention relates to multiplexer circuitry for efficiently going in the opposite direction from such relatively large groups of parallel data bits to a high-speed serial data output signal. | 2015-06-25 |
20150180684 | CSI-RS ANTENNA PORTS EXTENSION AND 3D CODEBOOK DESIGN - A system and a method is disclosed for selecting at least one vertical precoding vector of a three-dimensional Multiple Input Multiple Output (3D-MIMO) configuration based on Channel State Information-Reference Signal (CSI-RS) information that is feedback from a wireless terminal device to an evolved Node B (eNB). The 3D-MIMO CSI-RS process is configured for a plurality of CSI-RS ports in which the plurality of CSI-RS ports that are grouped into a plurality of CSI-RS port groups and in which corresponds to the 3D arrangement of antennas. CSI configuration information for the different CSI-RS port groups can be a time-domain-based CSI-RS process, a frequency-domain-based CSI-RS process, a code-domain-based CSI-RS process, or a combination thereof. CSI-RS information is measured for each CSI-RS group and feedback for selection of the at least one vertical precoding vector. | 2015-06-25 |
20150180685 | TRANSCEIVER DEVICE AND A METHOD FOR GENERATING A COMPENSATION SIGNAL - A transceiver device | 2015-06-25 |
20150180686 | DEVICES, SYSTEMS, AND METHODS OF COMMUNICATING MULTIPLE DATA PROTOCOLS OVER A CONDUCTIVE MEDIA INFRASTRUCTURE, REPURPOSING NETWORK CABLE TO MAINTAIN CLOSED SYSTEM FUNCTIONALITY, AND ENABLING IP COMMUNICATION - Data communication devices, systems, and methods of communicating multiple data protocols over a conductive media infrastructure comprise partitioning at least one broadband data universe from at least one baseband data universe such that each data universe is independently isolated in operation and functionality from every other data universe. A filter allows multiple information types to travel via the plurality of data universes. Baseband data signals include serial data traveling via the at least one baseband data universe, and broadband data signals include intended signal intelligence traveling via the at least one broadband data universe. The baseband and broadband data signals travel independently on the conductive media infrastructure. Wave shapes are managed to avoid harmonics that may encroach upon unintended data universes and retain signal integrity. In exemplary embodiments, a low-frequency bus circuit monitors for an edge detection state and a finite state machine runs a decoding sequence when the low-frequency bus circuit detects an edge detection state. | 2015-06-25 |
20150180687 | RF REPEATER CIRCUIT - RF repeater circuits may be used to regenerate an RF signal. A method and apparatus is described for regenerating a received RF signal the RF signal comprising a plurality of channels, each channel comprising a plurality of channel symbols, the method comprising producing a digitized RF signal from the received RF signal, extracting spectral information of each of the channels from the digitized RF signal, recovering one or more channel symbols from each of the plurality of channels, remodulating the channel symbols, and converting the remodulated channel symbols to an analog signal resulting in a regenerated RF signal. | 2015-06-25 |
20150180688 | METHOD, SYSTEM AND APPARATUS FOR AUDIO COMMUNICATION MODULATION MODE SELF-ADAPTATION AND ELECTRONIC SIGNATURE TOKEN - A method, system, and apparatus for audio communication modulation mode self-adaptation and an electronic signature token are provided. The method includes modulating first audio data using at least two modulation modes supported by the first device to generate first audio data frame streams; selecting an optimal modulation mode used in the second device from the modulation modes correctly received by the second device and supported by the first device according to a predetermined rule; demodulating the second audio data stream to obtain modulation modes correctly received by the first device and supported by the second device and the optimal modulation mode used in the second device; and selecting an optimal modulation mode used in the first device from the modulation modes correctly received by the first device and supported by the second device according to the predetermined rule. | 2015-06-25 |
20150180689 | COGNITIVE RADIO SPECTRUM SENSING WITH IMPROVED EDGE DETECTION OF FREQUENCY BANDS - A spectrum sensing method for cognitive radio wherein spectrum holes are detected in a wireless environment having spectrum scarcity. First, a cognitive radio user (CR) determines the power spectral density (PSD) of a wideband signal and detects subbands within the wideband using wavelet transforms (WT). WT coefficients are calculated by convolving the PSD with first derivatives of wavelet smoothing functions. The extrema of the WT coefficients demark frequency subband edges. Detecting subband edges becomes more robust against noise by median filtering the PSD before calculating WT coefficients, summing over WT coefficients with different scale factors, and suppressing WT coefficients below a noise threshold. After identifying subbands, the CR determines subband availability by measuring the subband power and signaling the power to a fusion center receiving power measurements from multiple cooperating CRs, and final decisions are based on data and decision fusion. | 2015-06-25 |
20150180690 | METHOD, BASEBAND SIGNAL GENERATOR AND COMPUTER PROGRAM FOR PROVIDING A BASEBAND SIGNAL | 2015-06-25 |
20150180691 | PHASE DETECTOR - Described are a method for generating a metric that is a function of a phase difference between a modulated carrier and a local carrier, and a phase detector for performing such a method. A baseband symbol is obtained from the modulated carrier, and the phase of the symbol is determined. Assuming that the modulation used to modulate the modulated carrier has a constellation diagram with M-fold rotational symmetry, the metric can be generated from the phase by evaluating a base function that includes a triangle wave having positively and negatively sloped linear segments whose slopes have identical absolute values and that is periodic with a period of 2π/M radians. Alternatively or additionally, if the ideal symbol phases are uniformly distributed, the metric can be generated by evaluating a version of the base function in which the ideal symbol phases correspond to identically valued metrics located on the triangle wave. | 2015-06-25 |
20150180692 | CIRCUITS AND METHODS FOR TRANSMITTING SIGNALS - For generating quantized signals, a quantized phase domain related to quantized phases of an input signal is generated. Vectors that the input signal may occupy are calculated based on the quantized phase domain. A first quantized phase of a first component of the input signal is generated per the quantized phase domain, and a second quantized phase of a second component of the input signal is generated per the quantized phase domain. | 2015-06-25 |
20150180693 | Baseband Processing of TDD Signals - Transceiver device and method therein, for baseband processing of signals associated with TDD communication over wire lines. The method involves use of a single burst I/O N-point complex FFT kernel for baseband processing of receive and transmit signal blocks, where the processing involves simultaneously performing a respective FFT or IFFT of two N-sample signal blocks. | 2015-06-25 |
20150180694 | RADIO FREQUENCY CIRCUIT FOR INTRA-BAND AND INTER-BAND CARRIER AGGREGATION - A radio frequency (RF) circuit for intra-band and inter-band carrier aggregation includes a receive path configured to receive an input signal. The RF circuit includes a low noise amplifier which has multiple separate input stages and multiple separate output stages. Each input stage has multiple separate input paths, wherein each separate input path is configured to be separately activated and connected to one of the output stages. Each separate output stage is configured to be separately activated and connected to a signal mixer that provides signal demodulation of the input signal employing aggregation of carriers corresponding to intra-band or inter-band signals. Methods of operating the RF circuit for intra-band and inter-band carrier aggregation are also provided. | 2015-06-25 |
20150180695 | PREAMBLE DETECTION DEVICE, PREAMBLE DETECTION METHOD AND COMPUTER PROGRAM - Suppressed is occurrence of false preamble detection in a preamble detection device for detecting a preamble sequence which is sent to it by the use of a physical random access channel. A preamble detection device includes a first threshold calculation unit ( | 2015-06-25 |
20150180696 | METHOD AND RECEIVER IN A WIRELESS COMMUNICATION SYSTEM - Receiver and method in a receiver, for estimating a normalised frequency offset between a transmitter and the receiver in a wireless communication system, based on Orthogonal Frequency Division Multiplexing, OFDM. The method comprises receiving a first pilot signal (y | 2015-06-25 |
20150180697 | METHOD OF WIRELESS COMMUNICATION WITH A MULTI-ANTENNA RECEIVER - A method of transmitting data between a transmitter furnished with M>=1 transmission antenna(s) and a receiver furnished with N>=2 reception antennas, in which said data are coded using an OFDM/OQAM modulation having L>=1 subcarriers. The method combines a specific coding/decoding with a precoding by Time Reversal, which can be used in high speed radio communications. | 2015-06-25 |
20150180698 | METHOD FOR GENERATING SYMBOLS FOR THE AUTOMATIC GAIN CONTROL OF A SIGNAL TO BE TRANSMITTED - A method for generating a set of symbols, called AGC symbols, for the automatic control of the amplitude of a signal to be transmitted, the signal comprising the set of AGC symbols and at least one first information symbol modulated with a linear modulation, comprises the following steps: recovering at least one modulated information symbol adjacent to said AGC symbols in the signal; and determining each AGC symbol of the set as a function of at least the modulated information symbol. | 2015-06-25 |