Quadrature Carriers Patents (Class 370/206)
  • Patent number: 8867637
    Abstract: A method and device are provided for selecting a transmission mode, for a first telecommunications entity having a plurality of different modes for transmitting a communications signal to a second telecommunications entity. The various transmission modes provide the same data rate D. The method includes: for a given transmission mode, determining the value of a first metric ? that measures degradation relating to a given distance d stemming from the transmission medium of the communications signal for a given environment compared with a reference model for the transmission medium, as a result of a multi-path effect and/or of an attenuation effect of the transmission medium; and comparing values of the metric ? for different modes in order to select at least one transmission mode.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: October 21, 2014
    Assignee: France Telecom
    Inventors: Anne-Marie Ulmer-Moll, Isabelle Siaud
  • Patent number: 8842619
    Abstract: To support mobile stations that are not capable of demodulating the entire bandwidth or that can be made to demodulate less than the entire bandwidth, a system, apparatus and method are provided to schedule users on less than all of the bandwidth. Further, certain users can be scheduled on more of the bandwidth than others.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aamod Dinkar Khandekar, Alexei Yurievitch Gorokhov, Avneesh Agrawal, Rajiv Vijayan, Edward Harrison Teague, Fatih Ulupinar
  • Patent number: 8830931
    Abstract: The present invention relates to a method in which a user equipment transmits a plurality of sounding reference signals to a base station in a wireless communication system. More particularly, the method comprises the steps of: generating a plurality of sounding reference signals on the basis of repetition factors (RPFs) corresponding to the number of transmitting antennas; multiplexing the plurality of sounding reference signals to a frequency domain in the same OFDM symbol or SC-FDMA symbol on the basis of a transmitting antenna index; and transmitting the multiplexed sounding reference signals to the base station using a plurality of transmitting antennas.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: September 9, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jae Hoon Chung, Yeong Hyeon Kwon, Min Seok Noh, Moon Il Lee
  • Patent number: 8830813
    Abstract: Systems, devices, and techniques for MIMO (Multiple-In-Multiple-Out) based space-frequency coding can include, in at least some implementations, techniques that include selecting a spatial multiplexing rate M for a transmission of data via two or more antennas, the data comprising N data streams, applying a first mapping to map the N data streams to a first portion of the antennas for a first data tone; and applying a different second mapping to map the N data streams to a different second portion of the antennas for a second data tone.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: September 9, 2014
    Assignee: Marvell International Ltd.
    Inventors: Hemanth Sampath, Ravi Narasimhan
  • Patent number: 8824366
    Abstract: A method and an apparatus of receiving data in a wireless communication system are provided. The method includes detecting a physical downlink control channel (PDCCH) on which control information is transmitted in a first subframe, and receiving data in at least one second subframe based on the control information.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: September 2, 2014
    Assignee: LG Electronics Inc.
    Inventors: Moon Il Lee, So Yeon Kim, Jae Hoon Chung, Hyun Soo Ko, Seung Hee Han
  • Patent number: 8824268
    Abstract: A wireless transmission scheme for transmitting images utilizing a cross layer method integrated the slice allocation and multiple modulation and coding modes selection without the need of feedback channel. The scheme divides a coded image into isolated coded slices, wherein each slice represents a region of the image and each slice is then modulated using modulation schemes of differing robustness. Data of most interest is received by all receivers, with some receivers receiving more data in areas with good channel conditions.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: September 2, 2014
    Inventor: Jian Feng Chen
  • Patent number: 8811143
    Abstract: A digital processing unit for use in a spread spectrum signal receiver, the digital processing unit being adapted to receive an incoming stream of data samples and in response thereto produce a decoded signal, the digital processing unit comprising a correlation module adapted to correlate data blocks formed from the incoming stream of data samples with a local code replica segment to produce a first number of intermediate accumulation results and an aggregation module adapted to receive the first number of intermediate accumulation results and to combine the first number of consecutive ones of said intermediate accumulation results to form a target number of aggregated accumulation results, said target number being less than or equal to the first number.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: August 19, 2014
    Assignee: NordNav Technologies AB
    Inventors: Christian Stahlberg, Per-Ludvig Normark
  • Patent number: 8798022
    Abstract: A non-transitory processor-readable medium storing code representing instructions to be executed by a processor includes code to cause the processor to receive from a wireless access point (WAP) device frequency-domain data associated with signals received at the WAP device from a wireless device during a time period. The code includes code to determine multiple frequency-domain magnitudes associated with the frequency-domain data for the time period to define a spectral magnitude signature associated with the frequency-domain data. Each frequency-domain magnitude from the multiple frequency-domain magnitudes is uniquely associated with a frequency bin from multiple mutually-exclusive frequency bins associated with the frequency domain data.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: August 5, 2014
    Assignee: Juniper Networks, Inc.
    Inventor: David Aragon
  • Patent number: 8798073
    Abstract: The present invention is provided to perform uplink scheduling of a mobile station. In order to perform the uplink scheduling of the mobile station located in a service cell, a base station receives a plurality of interference amounts each corresponding to a plurality of frequency bands associated with an uplink in at least one adjacent cell corresponding to the mobile station from the base station of at least one adjacent cell, respectively, and calculates a plurality of interference values each corresponding to the plurality of frequency bands by using the plurality of interference amounts each corresponding to at least one adjacent cell. In addition, the base station generates scheduling control information corresponding to the mobile station by using the plurality of interference values and transmits the scheduling control information to the mobile station.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: August 5, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Jae Lim, Chul Sik Yoon
  • Patent number: 8798214
    Abstract: Techniques for assigning multipaths to finger processors to achieve the desired data performance and low power consumption are described. A search is initially performed to obtain a set of multipaths for a transmission from at least one base station. At least one multipath (e.g., the minimum number of multipaths) having a combined performance metric (e.g., a combined SNR) exceeding a threshold is identified. The at least one multipath is assigned to, and processed by, at least one finger processor to recover the transmission from the base station(s).
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: August 5, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Michael Alexander Howard, June Namgoong, Hanfang Pan
  • Patent number: 8792322
    Abstract: A transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame including at least two signalling patterns adjacent to each other in the frequency direction and at least two data patterns, the transmitting apparatus including signalling mapping means to map signalling data on frequency carriers of each of the at least two signalling patterns in a frame, each signalling pattern having the same length, data mapping means to map data on frequency carriers of the at least two data patterns in a frame, transforming means to transform the signalling patterns and the data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means to transmit the transmission signal. A corresponding transmitting method and a frame pattern for a multi carrier system are also provided.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 29, 2014
    Assignee: Sony Corporation
    Inventors: Lothar Stadelmeier, Samuel Asangbeng Atungsiri, Martin Lovell, Tamotsu Ikeda
  • Patent number: 8787141
    Abstract: A transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame including at least one signalling pattern and one or more data patterns, said transmitting apparatus including frame forming means for arranging first signalling data in the at least one signalling pattern in a frame, and adapted to arrange data in the one or more data patterns in a frame, whereby the data of the one or more data patterns are arranged in data frames, each data frame comprising second signalling data and content data, transforming means for transforming the at least one signalling pattern and the one or more data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means for transmitting the time domain transmission signal.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: July 22, 2014
    Assignee: Sony Corporation
    Inventors: Samuel Asangbeng Atungsiri, Joerg Robert, Lothar Stadelmeier
  • Patent number: 8787140
    Abstract: A transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame including at least one signalling pattern and one or more data patterns, the transmitting apparatus including frame forming means for arranging signalling data in the at least one signalling pattern in a frame, and for arranging data and at least one pilot signal in the one or more data patterns in a frame, whereby the length of each of the one or more data patterns in the frequency direction is equal to or a multiple of a minimum data pattern length, transforming means for transforming the at least one signalling pattern the one or more data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means for transmitting the time domain transmission signal.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 22, 2014
    Assignee: Sony Corporation
    Inventors: Lothar Stadelmeier, Dietmar Schill, Joerg Robert
  • Patent number: 8774137
    Abstract: Methods and apparatus are provided for transmitting and receiving data in a communication system with a plurality of antennas. Data and a first pilot are generated. The first pilot is transmitted at a first position in a frequency domain that corresponds to a position of the generated data in the frequency domain and at a first position in a time domain that is with the generated data, in every transmission time interval of the data. A second pilot is generated. The second pilot is transmitted at predetermined second positions in the time domain and the frequency domain, in a transmission time interval that is predefined by a transmitter and a receiver.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: July 8, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jae-Chon Yu, Hwan-Joon Kwon, Dong-Hee Kim, Yu-Chul Kim, Jin-Kyu Han
  • Patent number: 8762809
    Abstract: An apparatus includes a circuit configured to at least one of (i) encode first data to produce encoded data or (ii) decode second data to produce decoded data. The circuit is configured to operate according to a predetermined matrix. Each element of the predetermined matrix labeled with a hyphen corresponds to a zero matrix. Each element of the predetermined matrix labeled with a number corresponds to a respective cyclic-permutation matrix.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: June 24, 2014
    Assignee: Marvell International Ltd.
    Inventors: Adina Matache, Heng Tang, Gregory Burd, Aditya Ramamoorthy, Jun Xu, Zining Wu
  • Patent number: 8761273
    Abstract: A method for receiving a data frame by a receive station in a wireless local area network (WLAN) system is provided. The method includes: receiving a signal A field including a multiple input multiple output (MIMO) indicator and including a first signal A sub-field and a second signal A sub-field each transmitted as different orthogonal frequency division multiplexing (OFDM) symbols; determining a processing type of a subsequently transmitted signal based on the signal A field; receiving a data field; and obtaining data by interpreting the data field based on the processing type of the signal. Different modulation schemes are applied to a higher frequency region and a lower frequency region on a subcarrier of the first signal A sub-field.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 24, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Bo Son, Sok Kyu Lee
  • Patent number: 8755263
    Abstract: The present invention relates to a device and method for optimal estimation of the distortion caused by the transmission medium by means of the sequential emission of pairs of quadrature complementary sequences, estimating the frequency spectrum of a transmission channel allows obtaining information of considerable interest to analyze its characteristics or correcting the distortion effects introduced in a communication system. This invention describes a new method for extracting said characteristics generating a transmission preamble using complementary sequences, which allows upon reception identifying the distortion caused in each of the I/Q phases of a quadrature modulation system on the transmitted symbols, canceling the phase distortion effects caused by the medium and reducing the equalization of the channel to a single equalizing baseband filter identical for both I2/Q2 phases.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: June 17, 2014
    Inventors: Vicente Diaz Fuente, Daniel Hernanz Chiloeches, Jesus Berian Mugica
  • Publication number: 20140160915
    Abstract: A preamble signal is an OFDM signal, and is a real-part signal obtained by removing an imaginary-part signal from a signal in the time domain that is generated by an IFFT process being performed on a signal in the frequency domain obtained by assigning preamble data to subcarriers in accordance with a predetermined arrangement pattern. The predetermined arrangement pattern indicates that preamble data is assigned to any of subcarriers given numbers equal to or less than N/2?1 and the preamble data is not assigned to subcarriers given numbers more than N/2?1, where a plurality of subcarriers are numbered by integers from 0 to N?1 (N is an integer) in ascending order with respect to the center frequency of each subcarrier.
    Type: Application
    Filed: September 25, 2012
    Publication date: June 12, 2014
    Applicant: MegaChips Corporation
    Inventor: Handa Chen
  • Patent number: 8750214
    Abstract: A method in a base station for detecting a HARQ-ACK codeword comprised in a signal received from a UE is provided. The base station knows HARQ-ACK codewords being possible to detect. The base station receives (401) a signal from the UE comprising a modulation symbol. The base station estimates (402) a SNR value for the received signal, and calculates (403) soft values for the modulation symbol. When the SNR value is lower than a predetermined threshold value and when the modulation symbol of the received signal comprises more than two bits per modulation symbol, the base station uses a first mode. The first mode comprises correlating (405) only the two first calculated soft values for the modulation symbol with the one or more known possible HARQ-ACK codewords. In other cases, i.e. when the first mode is not used, the base station uses a second mode. The second mode comprises correlating (408) all calculated soft values for the modulation symbol with the known possible HARQ-ACK codewords.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: June 10, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Oskar Mauritz, Fredrik Huss
  • Patent number: 8743837
    Abstract: A modified preamble is used by extended devices that operate at higher rates, MIMO or other extensions relative to strict 802.11a-compliant devices. The extended devices might use multiple antenna techniques (MIMO), where multiple data streams are multiplexed spatially and/or multi-channel techniques, where an extended transmitter transmits using more than one 802.11a channel at a time. Such extensions to IEEE 802.11a can exist in extended devices. The modified preamble is usable for signaling, to legacy devices as well as extended devices, to indicate capabilities and to cause legacy devices or extended devices to defer to other devices such that the common communication channel is not subject to unnecessary interference. The modified preamble is also usable for obtaining MIMO channel estimates and/or multi-channel estimates.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: June 3, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Albert van Zelst, D. J. Richard van Nee, Vincent K. Jones
  • Patent number: 8737373
    Abstract: Aspects describe conveying unicast information and broadcast information in a resource set for a transmission request. The unicast information and broadcast information can be transmitted at substantially the same time. Power control can be applied separately to the unicast information and the broadcast information for reliable decoding. A null request can be indicated by “00” bits in a unicast portion and a zero power level in the broadcast portion.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: May 27, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ashwin Sampath, Gavin Horn, Husheng Li
  • Patent number: 8737377
    Abstract: A plurality of antennas respectively conveys burst signals that use a plurality of subcarriers and contain control information for communications. When a plurality of subcarriers are used, a cyclic time shifting in a cycle in time domain is executed, per antenna, with a time-shift amount corresponding to each of the plurality of antennas. A control unit generates the burst signals informed from the plurality of antennas by complying with this rule. The control unit generates the burst signals by varying time shift amounts corresponding respectively to the plurality of antennas.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: May 27, 2014
    Assignee: Hera Wireless S.A.
    Inventor: Seigo Nakao
  • Patent number: 8731117
    Abstract: Embodiments of a method for OFDM frame boundary detection in a vehicular multipath channel include use of a maximal channel energy instead of a strongest path for detecting a frame boundary. A sample of OFDM data inputs is processed using long preamble local copy correlation and integration to obtain a channel energy which sums all paths of the multipath. A plurality of such channel energies obtained within a given time period are searched for a maximal channel energy, which, when found, is used to detect the frame boundary.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: May 20, 2014
    Assignee: Autotalks Ltd.
    Inventors: Onn Haran, Hanoch Kremer
  • Patent number: 8724464
    Abstract: Aspects of a method and system for near continuous data rate limit adjustment via a plurality of link variables in an energy efficient network. In this regard, power consumption of a network device may be controlled by enabling and/or disabling one or more components in the network device based on an adjustment of a plurality of data rate variables that control a data rate limit at which the network device may communicate. Exemplary data rate variables may comprise a number of active channels of a network link over which the network device communicates, a symbol rate on an Ethernet link over which said network device communicates, an inter-frame gap time on an Ethernet link over which said network device communicates, a signal constellation utilized for representing signals on an Ethernet link over which said network device communicates.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: May 13, 2014
    Assignee: Broadcom Corporation
    Inventor: Wael William Diab
  • Patent number: 8718115
    Abstract: Systems and methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols based on a chirp signal that yields a low peak-to-average power ratio (PAPR). According to some techniques, the preamble may be constructed with one or more different types and/or number of symbols configured to identify a PLC domain operating in close physical proximity to another PLC domain. According to other techniques, one or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise. According to yet other techniques, a PLC detector may be capable of receiving and decoding two or more types of PLC frames (e.g., using different PLC standards).
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: May 6, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Anand G. Dabak, Badri N. Varadarajan, Il Han Kim, Tarkesh Pande
  • Patent number: 8717866
    Abstract: A wireless device receives a message assigning each second carrier to one of a first carrier group and second carrier group(s). The message comprises parameters for each second carrier. If the parameters comprise a carrier group index for a second carrier, the second carrier is assigned to one of the second carrier group(s) identified by the carrier group index. Otherwise, the second carrier is assigned to the first carrier group. The wireless device receives a time alignment command comprising the carrier group index and a time adjustment value.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: May 6, 2014
    Assignee: Ofinno Technologies, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 8718210
    Abstract: Estimating a channel impulse response (CIR) for a wireless transmission, for example a multimedia broadcast multicast services single frequency network (MBSFN) transmission, may be performed by a receiver of an wireless subframe, without requiring operational memory in excess of what is needed for CIR estimation of unicast signaling, while providing enhanced delay spread coverage. The wireless subframe may be a MBSFN subframe. The receiver may form an aggregate vector of pilot tones extracted from an OFDM reference symbol of an wireless subframe. The receiver may subsample the aggregate vector to obtain a plurality of sub-vectors each comprising a distinct subsampling phase. The receiver may process the plurality of sub-vectors using an inverse fast Fourier transform to obtain time domain representations of each of the sub-vectors. The receiver may combine the time domain representations in various ways to obtain a CIR estimate for the wireless subframe.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: May 6, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Mariam Motamed, Alexei Yurievitch Gorokhov, Mike L. Mccloud, Parvathanathan Subrahmanya
  • Patent number: 8711803
    Abstract: A method of performing fast base station switching for hand off is provided that involves the use of a tunnel from a serving base station to a target base station. During a hand off, packets are forwarded by the serving base station to the target base station using the tunnel. A hierarchical hand off method is also provided that uses a diversity hand off method for a hand off between base stations of different zones, and uses a non-diversity handoff, such as the fast base station switching method, for a hand off between base stations in the same zone.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: April 29, 2014
    Assignee: Apple Inc.
    Inventors: Guo Qiang Wang, Brian Vezza
  • Patent number: 8711914
    Abstract: A channel estimating method and device are provided. The method includes: performing multi-path searching on a pilot channel, and performing interpolation on a channel estimation value at a radial position of the multi-path searching (101); performing raised cosine de-convolution on the channel estimation value that undergoes the interpolation (102); acquiring the channel estimation value at each radial position in the pilot channel according to the channel estimation value that undergoes the raised cosine de-convolution and a sample deviation acquired by performing the multi-path searching (103). The channel estimating method and device eliminate the sample deviation of the channel estimation value, improve the demodulation performance, and evidently reduce the operation workload.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: April 29, 2014
    Assignee: Huawei Device Co., Ltd.
    Inventors: Gengshi Wu, Meng Hua, Chunling Zhang, Shurong Jiao, Xiuqin Peng
  • Patent number: 8711771
    Abstract: Systems and methods for extending header fields are disclosed. The header field may be extended without changing the current size of the header. Reserve bits may be used to indicate the use of an extended header and the extended header may be store in a variety of locations within the frame, including the frame payload or pad bits.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: April 29, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Soumya Das, Kaushik Chakroborty, Krishnan Rajamani, Ozgur Dural, Samir Salib Soliman
  • Patent number: 8699644
    Abstract: Systems, methods, and other embodiments associated with adaptive low-complexity channel estimation are illustrated. In one embodiment a device includes a receiver configured to receive an orthogonal frequency-division multiplexed (OFDM) signal. The device also includes a controller configured to control a switch to select between processing paths based, at least in part, on the channel conditions of the OFDM signal. The processing paths selectable by the switch include a first processing path and a second processing path.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: April 15, 2014
    Assignee: Marvell International Ltd.
    Inventors: Yakun Sun, Jiwoong Choi, Hui-Ling Lou, Rapheal Cendrillon
  • Patent number: 8699317
    Abstract: A base station configures a first carrier group and a second carrier group in a wireless device. The wireless device transmits first uplink signals in the second carrier group employing a first secondary carrier in the second carrier group as a timing reference carrier. The wireless device autonomously changes the timing reference carrier to a second secondary carrier in the second carrier group. The second secondary carrier is an active carrier different from the first secondary carrier. The wireless device transmits second uplink signals in the second carrier group employing the second secondary carrier as the timing reference carrier.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: April 15, 2014
    Assignee: Ofinno Technologies, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 8693432
    Abstract: The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequency division duplex (FDD), time division multiple access (TDMA), orthogonal frequency division multiplexing (OFDM), spatial diversity, and polarization diversity in various unique combinations. The method provides excellent fade resistance. The method enables changing a user's available bandwidth on demand by assigning additional TDMA slots during the user's session.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: April 8, 2014
    Assignee: AT&T Mobility II LLC
    Inventors: Siavash Alamouti, Eduardo F. Casas, Michael Hirano, Elliott Hoole, Mary Jesse, David G. Michelson, Patrick Poon, Gregory J. Veintimilla, Hongliang Zhang
  • Patent number: 8688103
    Abstract: One embodiment of the invention is a method that includes a mobile device receiving via a wireless communication channel a request for an identifier corresponding to a network device. The mobile device transmits the identifier. The mobile device receives a network identifier corresponding to the network device. The mobile device utilizes the network identifier to establish communication with the network device via the wireless communication channel.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: April 1, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Rajesh Doshi
  • Patent number: 8665691
    Abstract: The present invention relates to a transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame comprising at least one signalling pattern and one or more data patterns, said transmitting apparatus comprising frame forming means adapted to arrange first signalling data in said at least one signalling pattern in a frame, and adapted to arrange data in said one or more data patterns in a frame, whereby the data of said one or more data patterns comprise content data and sorting information enabling a sorting of the content data in the correct temporal order, transforming means adapted to transform said at least one signalling pattern and said one or more data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means adapted to transmit said time domain transmission signal.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: March 4, 2014
    Assignee: Sony Corporation
    Inventors: Joérg Robert, Lothar Stadelmeier, Khaled Daoud
  • Patent number: 8654906
    Abstract: A receiving device includes a FFT unit performing FFT on an input signal of a time domain to transform the input signal into a plurality of signals of frequency domains and outputting the plurality of signals of the frequency domains, a signal extracting unit extracting a signal with a power that is greater than a threshold value from among the plurality of signals of the frequency domains output from the first FFT unit and outputting the extracted signal, an IFFT unit performing IFFT on the extracted signal output from the signal extracting unit, a subtracting unit subtracting the extracted signal output from the IFFT unit from the input signal and outputs a subtracted signal, and a second FFT unit transforming the subtracted signal output from the subtracting unit into a signal of the frequency domain by performing the FFT on the subtracted signal output from the subtracting unit.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: February 18, 2014
    Assignee: Fujitsu Limited
    Inventor: Tsuyoshi Hasegawa
  • Patent number: 8644282
    Abstract: A system and method for transmitting LDPC parameters is provided. In the method, an initial number of OFDM symbols (Nsym_init) is determined for a packet that is based on the number of information bits to be delivered in the packet. An STBC value is also determined. A number of extra symbols (Nsym_ext) value is generated based on the Nsym_init value, wherein a Nsym value is based on said Nsym_init value and said Nsym_ext value. An Nldpc_ext value is determined based on the STBC value and the Nsym_ext value for purposes of determining LDPC parameters associated with the packet.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: February 4, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Kai Shi, Ning Zhang
  • Patent number: 8644129
    Abstract: A wireless device receives a control command to transmit a random access preamble on a second carrier. The wireless device repeatedly transmits the random access preamble until a random access response corresponding to the random access preamble is received or a predefined number of transmissions is reached. If the predefined number of transmissions is reached without receiving the random access response, the wireless device keeps an RRC connection with the base station active.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: February 4, 2014
    Assignee: Ofinno Technologies, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 8644200
    Abstract: A remote station, for a wireless communication system, includes a receiver configured to receive on a first downlink a synchronization control channel on a first carrier frequency and on a second downlink a shared physical channel on a second carrier frequency different than the first carrier frequency. The shared physical channel includes a first physical shared channel having a unicast signal and a second physical shared channel having a multicast or broadcast signal, the unicast signal being multiplexed in time with the multicast or broadcast signal. The remote station includes a control processor configured to generate an acknowledgement signal on an uplink based on the unicast signal.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: February 4, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Serge D. Willenegger, Edward G. Tiedemann, Jr.
  • Patent number: 8630329
    Abstract: For a demand of high speed, low cost and low power loss short distance wireless communication, a high-speed sampling and low-precision quantification pulse ultra-wideband wireless communication method is provided. A baseband narrow pulse sequence is generated at a transmission end using the digital technology by the method, and is transmitted after modulating amplifying and filtering and amplifying at a reception end, after the digital-signal processing of synchronizing, channel estimating, related detecting, and channel decoding, tec, is performed for the quantified data, the transmission information is retrieved.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: January 14, 2014
    Assignee: Southeast University
    Inventors: Zaichen Zhang, Guangguo Bi, Xiaohu You, Liang Wu
  • Patent number: 8625405
    Abstract: A wireless device receives RRC message(s) configuring transmissions of sounding reference signals on a second carrier in a second carrier group. The wireless device receives a random access response comprising a long time alignment value and a preamble identifier. The wireless device transmits the sounding reference signals on the second carrier after adjusting uplink transmission timing of the second carrier group. The wireless device is configured to not transmit any of the sounding reference signals on the second carrier until the wireless device receives the random access response comprising the long time alignment value and an uplink grant.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: January 7, 2014
    Assignee: Ofinno Technologies, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 8625404
    Abstract: A wireless device receives RRC message(s) configuring transmissions of sounding reference signals on a second carrier in a second carrier group. The wireless device receives a random access response comprising a long time alignment value and a preamble identifier. The wireless device transmits the sounding reference signals on the second carrier after adjusting uplink transmission timing of the second carrier group. The wireless device is configured to not transmit any of the sounding reference signals on the second carrier until the wireless device receives the random access response comprising the long time alignment value and an uplink grant.
    Type: Grant
    Filed: May 5, 2013
    Date of Patent: January 7, 2014
    Assignee: Ofinno Technologies, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 8619667
    Abstract: The present invention aims at providing flexible and optimal configuration of an air interface of a transmitter in a radio system, more particularly a mobile radiotelephone system. According to the present invention, the data of a subscriber-specific control channel transmitted by the transmitter is transmitted with an adaptively modifiable frequency position or band width. The subscriber-specific control channel may include pilot symbols for channel evaluation, TCP symbols for power regulation, TFI symbols for transmitting transmission format information and other symbols, wherein the desired frequency position or band width can be individually adjusted for the individual symbol groups.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: December 31, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Markus Nasshan
  • Patent number: 8611820
    Abstract: Techniques for designing a communications unit including a signal separation module for energy harvesting. In an exemplary aspect, the signal separation module includes first and second quadrature hybrids coupled by band-pass filters (BPF's). Incoming signals within the pass-band of the BPF's are directed through the quadrature hybrids and through the BPF's, and emerge as a desired pass-band signal to be processed by an RX processing module. Incoming signals lying outside the pass-band of the BPF's are reflected from the BPF's back to the first quadrature hybrid, and output as a non-pass-band signal to be processed by an energy harvesting module. In a further exemplary aspect, the signal separation module resides in a detachable module coupleable to a wireless communications device, and a signal transmitted by the wireless communications device is coupled to the signal separation module for energy harvesting.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: December 17, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Robert P. Gilmore
  • Patent number: 8606280
    Abstract: A resource allocation in a broadband wireless communication system is provided. An apparatus for a base station in a broadband wireless communication system includes a manager for managing resources by dividing the resources into a plurality of regions based on a maximum supportable error vector magnitude (EVM) in a frequency axis; and an allocator for allocating resources of a region other than a first region, the region having the smallest maximum supportable EVM, to a service to which a maximum modulation and coding scheme (MCS) level is not applied.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: December 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Hyun Lee, Young-Hoon Kwon, Sang-Boh Yun, Won-Suk Choi
  • Patent number: 8576754
    Abstract: A time division duplex (TDD) base station having a code group out of N code groups includes circuitry configured to transmit a primary synchronization code along with a plurality of secondary synchronization codes. The plurality of synchronization codes are quadrature phase shift keying modulated and number less than (log2 N)+1. The plurality of synchronization codes are used to identify the code group of the TDD base station.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: November 5, 2013
    Assignee: InterDigital Technology Corporation
    Inventors: Nadir Sezgin, Fatih Ozluturk
  • Patent number: 8559323
    Abstract: Techniques are provided herein to allow a wireless network access point (AP) to more fully use its bandwidth in order to leverage the different bandwidth capabilities of different types of wireless client devices that the AP serves. The AP generates control parameters for usage of a plurality of channels in a bandwidth during a downlink transmission interval. The control parameters comprise information indicating channel assignments that result in multiple downlink transmissions that at least partially overlap in time to different wireless client devices according to their respective bandwidth capabilities. The AP transmits the control parameters in a control frame in advance of the downlink transmission interval on each of the plurality of channels in the bandwidth.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: October 15, 2013
    Assignee: Cisco Technology, Inc.
    Inventor: Brian Donald Hart
  • Patent number: 8559536
    Abstract: SP signals to be transmitted from a first transmitting antenna are arranged in the same pattern as SP signals to be transmitted from a second transmitting antenna. The SP signals to be transmitted from the second transmitting antenna in one symbol are generated, such that the polarity of the SP signals are alternately inverted and non-inverted with respect to the SP signals to be transmitted from the first transmitting antenna in the same symbol. Thus, in the direction that the symbol number is incremented by 1 and the carrier number is incremented by 3, the polarity of SP signals transmitted from the second transmitting antenna are all inverted or non-inverted with respect to the polarity of corresponding SP signals transmitted from the first transmitting antenna.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: October 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Kenichiro Hayashi, Tomohiro Kimura
  • Patent number: 8553642
    Abstract: The present invention discloses a method for solving non-controllability of terminal's power spectrum density in OFDMA system. It considers the problem of non-controllability of terminal's carrier transmit power resulting from the indeterminacy of carrier number allocation to the terminal in the OFDMA system which is solved by introducing the maximum carrier number that can be allocated to the terminal by combing AMC, the power control and the dispatching. By applying the present invention, the carrier power of the terminal can be best controlled by the system, it is most possible for the terminal to transmit power on carrier completely according to a set value, while it is greatly reduced the possibility that the terminal's power spectrum density is suddenly decreased out of control, which is caused by the summation of carrier powers in the set value exceeding the maximum total transmit power.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: October 8, 2013
    Assignee: ZTE Corporation
    Inventors: Qinji Li, Gang Qiu, Shaogui Lu, Ying Liu, Xiangyu Liu, Dengkui Zhu
  • Patent number: RE44622
    Abstract: A method of estimating coarse frequency offset of received symbols based on a received frequency domain sample at a kth sub-carrier of a 53rd Orthogonal Frequency Division Multiplexing (OFDM) data symbol in a jth time slot (TS) of a receiver in a China Multimedia Mobile Broadcasting (CMMB) mobile television communication network includes dividing a received sample, Ykj, into two sets of noise only tones and data plus noise tones Dkj, obtaining a received sample only if there is a coarse frequency offset mismatch between a transmitter and the receiver, dividing a summation of a power of the data plus noise tones by a summation of a power of the noise only tones to obtain ?kj, and estimating an integer coarse frequency offset estimate, ?{circumflex over (f)}Ij, of the received symbols when the ?kj is a maximum.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: December 3, 2013
    Assignee: Newport Media, Inc.
    Inventors: Xiaoyu Fu, Jun Ma, Nabil Yousef