Multiple Access (e.g., Fdma) Patents (Class 370/344)
  • Patent number: 10791542
    Abstract: Certain aspects of the present disclosure relate to techniques for assigning resources for common reference signal (CRS) transmissions from user equipment (UE) relays. Aspects of the present disclosure provide techniques to use minimum possible resources for transmission of CRS in an attempt to reduce interference, reduce power consumption while providing appropriate reference for channel measurement and demodulation. In an aspect, a wireless node (e.g., a UE relay station) may determine resources for transmission of CRS in a subframe based, at least in part, on a type of one or more channels to be transmitted in the subframe, and may transmit the CRS using the determined resources.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 29, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Aleksandar Damnjanovic, Juan Montojo
  • Patent number: 10750481
    Abstract: Various aspects described herein relate to communicating in a wireless network. A transmission time interval (TTI) for an uplink control channel transmission within a subframe is determined, wherein the TTI comprises of a number of symbols which are a subset of a plurality of symbols in the subframe. Uplink control data can be transmitted over the uplink control channel during the TTI.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: August 18, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Peter Gaal, Shimman Arvind Patel, Hao Xu
  • Patent number: 10743186
    Abstract: Embodiments herein relate for example to a method performed by a wireless device in a first wireless communication system that is deployed on a frequency resource. The wireless device receives information indicating a PRB offset and a corresponding channel raster offset. The channel raster offset is an offset in frequency between a channel raster, used by the wireless device (105) in a cell search process, and the frequency resource. The PRB offset indicates an offset between the frequency resource and an inner frequency resource on which a second wireless communication system is deployed. In the frequency domain, the second wireless communication system is deployed on at least one higher frequency resource above the inner frequency resource and at least one lower frequency resource below the inner frequency resource. The wireless device determines, based on the received information, an adjustment in frequency applicable for the frequency resource on which the first wireless communication system is deployed.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 11, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Yutao Sui, Ansuman Adhikary, Johan Bergman, Yufei Blankenship, Asbjörn Grövlen, Xingqin Lin, Hazhir Shokri Razaghi, Yi-Pin Eric Wang
  • Patent number: 10743339
    Abstract: A lack of a valid dedicated uplink control channel resource configuration can be ascertained by a device. A number of symbols for an uplink control channel can be determined in response to ascertaining a lack of a valid dedicated uplink control channel resource configuration. A downlink message can be received. The downlink message can be based on a device identity of the device. A HARQ-ACK feedback can be transmitted on the uplink control channel using the determined number of symbols in response to receiving the downlink message.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 11, 2020
    Assignee: Motorola Mobility LLC
    Inventors: Hyejung Jung, Vijay Nangia, Ravi Kuchibhotla
  • Patent number: 10720970
    Abstract: For example, a wireless station may be configured to generate a plurality of time-domain streams in a time domain, the plurality of time-domain streams comprising at least a first time-domain stream comprising a first data sequence in a first interval and a second time-domain stream comprising a second data sequence in the first interval, the first time-domain stream comprises a time-inverted and sign-inverted complex conjugate of the second data sequence in a second interval subsequent to the first interval, and the second time-domain stream comprises a time-inverted complex conjugate of the first data sequence in the second interval; to convert the plurality of time-domain streams into a respective plurality of frequency-domain streams in a frequency domain; and to transmit a Multiple-Input-Multiple-Output (MIMO) transmission based on the plurality of frequency-domain streams.
    Type: Grant
    Filed: September 9, 2018
    Date of Patent: July 21, 2020
    Assignee: INTEL CORPORATION
    Inventors: Artyom Lomayev, Alexander Maltsev, Carlos Cordeiro, Michael Genossar
  • Patent number: 10715273
    Abstract: A joint channel estimation and data detection technique for decoding an uplink control channel using resource elements that are redundant in acknowledgement and negative acknowledgement uplink control channel transmissions is disclosed. To improve the performance of a decoder, channel estimation can be performed using reference signals (pilot symbols) to determine the characteristics of a channel at given locations within a subframe. For some uplink control channel formats, however, there aren't dedicated locations for reference signals/symbols, and so channel estimation is not performed.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 14, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: SaiRamesh Nammi
  • Patent number: 10701723
    Abstract: A first apparatus may determine a demodulation reference signal (DMRS) sequence based on a mother sequence, map the DMRS sequence to at least a first symbol of a set of resource blocks (RBs) in a transmission, and send a DMRS including the mapped DMRS sequence in the at least one symbol of the set of RBs. A second apparatus may receive information associated with resource allocation, determine a granularity based on the information associated with resource allocation, determine resource allocation based at least in part on the granularity, and receive a signal carried on resources corresponding to the resource allocation.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: June 30, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Renqiu Wang, Hao Xu, Wei Zeng, Seyong Park, Wanshi Chen, Peter Gaal, Tingfang Ji
  • Patent number: 10701752
    Abstract: The present invention relates to a device and method for allocating a coexistence resource in an unlicensed band. The device according to the present invention comprises: a frame configuration unit for configuring a subframe in which data and a reference signal for a channel in an unlicensed band are allocated, and allocating a part of the symbols of the subframe as a coexistence resource; a signal detection unit for detecting a signal of another LTE system or Wi-Fi system during a transmission idle period where the coexistence resource is allocated; and a transmission processing unit which, when the signal of another system is detected during the transmission idle period, does not occupy a resource for the next subframe, and when the occupation of the coexistence resource by the another system has ended, occupies the resource for the next subframe.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 30, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Kyu Min Kang, Seung Keun Park, Jae Cheol Park, Sung Jin Yoo, Dong Hun Lee, Hoi Yoon Jung, Su Na Choi, Sung Hyun Hwang
  • Patent number: 10693535
    Abstract: A high-order Multiple-Input-Multiple-Output (MIMO) transmitter implementing a covariance-based precoding scheme that exploits transmit channel correlation and a method of operation thereof are provided. In one embodiment, covariance-based precoding is performed at the high-order MIMO transmitter based on feedback from a remote high-order MIMO receiver regarding a covariance-based precoding matrix. The covariance-based precoding matrix is, or is derived from, a transmit channel correlation matrix determined by the high-order MIMO receiver for the high-order MIMO transmitter. The covariance-based precoding provides a beam-forming effect when there is a relatively high degree of transmit channel correlation, thereby improving performance of the high-order MIMO transmitter. Further, because changes in the transmit channel correlation occur relatively slowly over time, feedback overhead requirements are substantially reduced as compared to that required for traditional MIMO precoding schemes.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: June 23, 2020
    Assignee: Apple Inc.
    Inventors: Ming Jia, Jianglei Ma, Peiying Zhu, Wen Tong
  • Patent number: 10687285
    Abstract: A transmitting method, a transmitter, a receiver and an associated scheduling method for control signal and data signal are provided. The transmitting method includes following steps. Firstly, a first control power and a first data power are respectively allocated to a first control signal and a first data signal which are to be transmitted with a first sub-carrier in a first time duration. The first control power and the first data power are different. The first control signal and the first data signal are multiplexed by superimposing the first control power and the first data power before the multiplexed first control signal and the multiplexed first data signal are transmitted.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 16, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Min Lee, Tzu-Ming Lin, Keng-Te Liao, Chia-Han Lee
  • Patent number: 10687352
    Abstract: Methods, systems, and devices are described for wireless communications. A wireless communication device may switch between a distributed and a clustered transmission scheme for control information transmissions. In some cases, the base station may indicate to a UE that a clustered control information transmission scheme will be used and may also indicate a monitoring pattern informing the UE how to identify its own control information in a control information set. For instance, a base station may indicate to the UE that a preferred beam of the UE is correlated with a symbol position of the UE's control information in the control information set. In some cases, the base station may indicate to a UE that a distributed control information transmission scheme will be used.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: June 16, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Makesh Pravin John Wilson, Tao Luo, Jing Sun, Heechoon Lee
  • Patent number: 10680766
    Abstract: A method for dynamic allocation of radio UL Physical Resource Block pairs of a plurality of subframes in a cell of an FDMA RAN. For each of the plurality of subframes, using a bandwidth layout in frequency domain for an UL bandwidth of the cell, in which the bandwidth layout has an inner region for a PUSCH positioned between outer regions for a PUCCH. For each of the outer regions, a PUCCH layout comprises an innermost section for PUCCH Format 1 and a middle section and an outermost section are PUCCH Formats 2 and 3. Depending on the traffic load of the cell, dynamically allocating, contiguously inwards, PRB pairs to Scheduling Requests in the outer regions and contiguously extending the inner region as allowed by the dynamic allocation of PRB pairs in the outer regions in each of the plurality of subframes.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: June 9, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Seungtai Kim
  • Patent number: 10680866
    Abstract: Methods and devices for assigning sounding reference signals (SRS) resources to UEs in a wireless communication network are provided. Configuration information is sent to a UE, the configuration information pertaining to a first sequence identifier (ID) to be used by the UE to generate a plurality of SRS sequences to be sent by the UE as at least part of a first SRS. Each SRS sequence of the plurality of SRS sequences is a function of a respective SRS sequence root that is a function of the first sequence ID. The first sequence ID may be a UE-specific sequence ID that is a function of a UE-specific ID associated with the UE, such as a Cell-Radio Network Temporary Identifier (C-RNTI).
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: June 9, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Keyvan Zarifi, Mohammadhadi Baligh, Yicheng Lin
  • Patent number: 10659528
    Abstract: A vehicular hybrid network system includes a cognitive radio ad hoc vehicular network (CRAVENET) configured to provide information services to a plurality of vehicles in the CRAVENET. The CRAVENET includes a first plurality of cloud networks interconnecting a set of vehicles from the plurality of vehicles. The set of vehicles shares a set of resources. The CRAVENET further includes a second plurality of cloud networks interconnecting two or more of the first plurality of cloud networks using a short-range communication system. The CRAVENET also includes one or more central cloud network interconnecting the second plurality of cloud networks using a long-range communication system. The vehicular hybrid network system further includes an IoV application management system configured to control the set of resources available to the CRAVENET and a CRAVENET communication system configured to provide distributive communication to the sets of vehicles via a secure communication protocol.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: May 19, 2020
    Assignee: BOARD OF TRUSTEES OF THE UNIVERSITY OF ARKANSAS
    Inventors: Sachin Sharma, Muhammad Awan, Seshadri Mohan
  • Patent number: 10660126
    Abstract: Provided is a communication device, even in a case that many communication devices are connected in a radio communication network constituted of a plurality of different radio communication technologies, that suppresses data transmission of one communication technology from delaying due to data transmission situation of another communication device and enables coexistence of different radio communication technologies.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 19, 2020
    Assignees: SHARP KABUSHIKI KAISHA, OSAKA UNIVERSITY
    Inventors: Takashi Yoshimoto, Jungo Goto, Osamu Nakamura, Yasuhiro Hamaguchi, Seiichi Sampei, Shinsuke Ibi
  • Patent number: 10638501
    Abstract: Aspects of the present disclosure provide for opportunistic uplink transmissions within a slot. In some examples, after scheduling all regular uplink transmissions within a current slot, a base station (e.g., gNB) may identify a set of unused uplink resources within the current slot and generate and transmit unused resource information identifying the set of unused resources to the user equipment (UE) within the cell served by the base station. If a particular UE is configured to operate in an opportunistic mode, the UE may utilize the unused resource information to generate and transmit an opportunistic uplink transmission within the set of unused uplink resources.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 28, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Yi Huang, Hao Xu, Wanshi Chen, Renqiu Wang, Joseph Binamira Soriaga, Peter Gaal, Seyong Park
  • Patent number: 10616910
    Abstract: Embodiments disclose an uplink data transmission method and apparatus. The method includes: determining M transmission areas allocated to a terminal device, and generating first information used to indicate the M transmission areas, where M is a positive integer, and the transmission area represents an air interface time-frequency resource that includes a time range and a frequency range that are specified by a communications system. The method also includes determining, for each transmission area of the M transmission areas, second information used to indicate a transport block size. The method also includes sending an indication message to the terminal device, so that the terminal device transmits uplink data according to the indication message, where the indication message includes the first information and the second information.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 7, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiuqiang Xu, Lei Wang, Shunqing Zhang, Yan Chen
  • Patent number: 10601622
    Abstract: Embodiments of the present disclosure relate to a method and apparatus of transmitting uplink (UL) information and a method and apparatus of receiving UL information. In one embodiment of the present disclosure, the method of transmitting UL information comprises transmitting a reference signal using a first sequence; and transmitting UL control information using a second sequence; wherein a reference signal and the UL control information are staggered-multiplexed in frequency domain. With embodiments of the present disclosure, the uplink information can be transmitted in reduced uplink symbols so as to adapt for a proposed subframe structure with reduced uplink symbols and thus, the transmission latency can be reduced greatly.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: March 24, 2020
    Assignee: NEC CORPORATION
    Inventors: Yukai Gao, Chuangxin Jiang, Zhennian Sun, Gang Wang
  • Patent number: 10602473
    Abstract: A wireless communication device operative to receive resource blocks (N) in a shiftable receiving frequency range (fMTC) within a system bandwidth (NRB) for transmission of resource blocks (N) allocated to transmit positioning reference signals (PRS), the receiving frequency range (fMTC) being smaller than the system bandwidth (NRB).
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: March 24, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Yufei Blankenship, Vidit Saxena, Meng Wang
  • Patent number: 10601549
    Abstract: For example, an EDMG STA may be configured to generate a plurality of spatial streams of an EDMG PPDU; map the plurality of spatial streams to a respective plurality of pairs of space-time streams according to an STBC scheme by mapping a first data sequence of a spatial stream to a first symbol in an odd numbered space-time stream, mapping a second data sequence of the spatial stream to a second symbol in the odd numbered space-time stream, mapping a sign inverted complex conjugate of the second data sequence to a first symbol in an even numbered space-time stream, and mapping a complex conjugate of the first data sequence to a second symbol in the even numbered space-time stream; and transmit a transmission comprising the plurality of pairs of space-time streams over a channel bandwidth in a frequency band above 45 Gigahertz (GHz).
    Type: Grant
    Filed: September 16, 2018
    Date of Patent: March 24, 2020
    Assignee: INTEL IP CORPORATION
    Inventors: Artyom Lomayev, Alexander Maltsev, Michael Genossar, Claudio Da Silva, Carlos Cordeiro
  • Patent number: 10574495
    Abstract: Methods and devices for assigning sounding reference signals (SRS) resources to UEs in a wireless communication network are provided. Configuration information is sent to a UE, the configuration information pertaining to a first sequence identifier (ID) to be used by the UE to generate a plurality of SRS sequences to be sent by the UE as at least part of a first SRS. Each SRS sequence of the plurality of SRS sequences is a function of a respective SRS sequence root that is a function of the first sequence ID. The first sequence ID may be a UE-specific sequence ID that is a function of a UE-specific ID associated with the UE, such as a Cell-Radio Network Temporary Identifier (C-RNTI).
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: February 25, 2020
    Assignee: Huawei Technology Co., Ltd.
    Inventors: Keyvan Zarifi, Mohammadhadi Baligh, Yicheng Lin
  • Patent number: 10568144
    Abstract: A random access preamble detection method of a base station includes removing a cyclic prefix (CP) from a received signal, detecting a plurality of first symbols corresponding to a plurality of first subcarriers included in an uplink available resource from the received signal with the CP removed, measuring reception power of the first symbol corresponding to each of a plurality of second subcarriers allocated to a random access channel among the plurality of first subcarriers, accumulating reception power with respect to each of the plurality of second subcarriers according to a predetermined frequency hopping pattern, and upon completely accumulating reception power according to the frequency hopping pattern, detecting a preamble sequence using each accumulated value of reception power of each of the plurality of second subcarriers.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: February 18, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong Chul Cho, Hyung Jin Kim, Gweon Do Jo
  • Patent number: 10568054
    Abstract: A method of receiving a synchronization signal for device-to-device (D2D) communication by a user equipment (UE) in a wireless communication system is provided. A synchronization signal is received from a base station (BS) to acquire synchronization. Information on capability of the UE related with a synchronization mode is transmitted to the BS. Information on the synchronization mode indicating a first synchronization mode or a second synchronization mode is received from the BS. A reference synchronization of transmitting a D2D signal is determined based on the synchronization mode. When the information on the synchronization mode indicates the second synchronization mode, a synchronization signal is received from a device except for the BS to acquire synchronization for D2D communication.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: February 18, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hanbyul Seo, Manyoung Jung
  • Patent number: 10567981
    Abstract: Techniques for operating a wireless network in a plurality of radio operating environments are disclosed. In some embodiments, an apparatus receives a first parameter value set that is selected from a group of multiple parameter value sets, wherein the first parameter value set is appropriate for a first target radio operating environment that corresponds to one or more of: a first level of mobility of user devices or a first range of wireless transmission. In some embodiments, the apparatus is reconfigured to receive wireless broadcast transmissions from a second broadcast transmitter using a second parameter value set that is appropriate for a second target radio operating environment. The first and second broadcast transmitters may be the same or different. The parameter value sets may include a first parameter based upon which the apparatus is configured to determine subcarrier spacing and a second parameter that indicates a cyclic prefix size.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: February 18, 2020
    Assignee: COHERENT LOGIX, INCORPORATED
    Inventors: Tommy K. Eng, Kevin A. Shelby
  • Patent number: 10560116
    Abstract: A method includes, for an N-bit system on chip (SoC), calculating a minimum number of bits NP that can simultaneously switch without producing an error across a complete warranty time period of the N-bit SoC. The method also includes carrying out power estimation calculations for the N-bit SoC using the calculated minimum number of bits NP.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: February 11, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Nitin Kumar Chhabra, Rohit Halba, Shashi Kumar Shaw, Shrikrishna Nana Mehetre
  • Patent number: 10555305
    Abstract: A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section detects space multiplexing transmission adaptability for divided bands obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results. Transmission format setting section sets a transmission format when carrying out radio transmission based on the detection results from space multiplexing adaptability detection section.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: February 4, 2020
    Assignee: Optis Wireless Technology, LLC
    Inventors: Takaaki Kishigami, Yoichi Nakagawa, Kentaro Miyano
  • Patent number: 10548105
    Abstract: Embodiments of the present invention provide a synchronization signal carrying method and an apparatus. The synchronization signal carrying method in the present invention includes: determining, by first user equipment, a priority parameter of a synchronization signal; determining, by the first user equipment according to the priority parameter, a resource for carrying the synchronization signal, where a configuration of the resource indicates the priority parameter; and sending, by the first user equipment, the synchronization signal to second user equipment by using the resource, so that the second user equipment determines a synchronization signal for the second user equipment. The embodiments of the present invention enable a more flexible synchronization signal determining manner in a D2D communications system.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: January 28, 2020
    Assignee: Huawei Device Co., Ltd.
    Inventor: Jian Wang
  • Patent number: 10547431
    Abstract: Embodiments of the present application disclose a data retransmission method, a data recovery method, and apparatuses thereof. The data retransmission method comprises: determining at least one data symbol that is to be retransmitted to a receiver; and sending the retransmitted at least one data symbol to the receiver. For the methods and the apparatuses in the embodiments of the present application, retransmission is performed for an incorrect symbol, so that a possible bandwidth waste can be reduced.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: January 28, 2020
    Assignee: BEIJING ZHIGU RUI TUO TECH CO., LTD.
    Inventors: Weicai Huang, Na Wei
  • Patent number: 10541847
    Abstract: A method and a device for forming a DFT-spread OFDM symbol including data and pilots, comprising: forming a pilot symbol in the time domain, the pilot symbol comprising at least two parts, a first part of the pilot symbol comprising samples of front pilots, a second part of the pilot symbol comprising null values, performing a DFT-spread OFDM modulation of the pilot symbol, precoding the data, putting the precoded data under the form of a data symbol in the time domain, the data symbol comprising at least two parts, a first part of the data symbol comprising null values, a second part of the data symbol comprising the data, performing a DFT-spread OFDM modulation of the data symbol, modifying a part of the DFT-spread OFDM modulated data symbol, combining the modified DFT-spread OFDM modulated data to the DFT-spread OFDM modulated pilot symbol.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: January 21, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Arnaud Bouttier, Loic Brunel
  • Patent number: 10516449
    Abstract: The present invention discloses various improvements to multi-user multiple-input multiple-output orthogonal frequency division multiplexing (MU-MIMO-OFDM) wireless communication systems. In one aspect there is disclosed an efficient and accurate channel estimation method and system using locally consecutive pilot sub-carriers. In another aspect there is disclosed an efficient channel feedback method and system by applying a discrete cosine transform to channel coefficients. In another aspect there is disclosed an efficient method and system to calculate a part of the channel inverse by interpolation. These aspects can be used in combination to improve the MU-MIMO-OFDM system.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: December 24, 2019
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Chang Kyung Sung, Rodney Kendall, David Eric Humphrey, Hajime Suzuki
  • Patent number: 10505684
    Abstract: A device and method in which a plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: December 10, 2019
    Assignee: NEC Corporation
    Inventors: Kengo Oketani, Yoshikazu Kakura
  • Patent number: 10498557
    Abstract: A signal modulated according to zero-tail discrete Fourier transform spread orthogonal frequency division multiplexing (ZT DFT-s-OFDM) is received over a channel. The signal is down-sampled into a first sequence including N samples, N corresponding to the number of used subcarriers. The first Nh samples and the last Nt samples are removed from the first sequence, thereby obtaining a second sequence having a length of N-Nh-Nt. The second sequence is correlated with a reference sequence which has a length N-Nh-Nt, and a frequency response of the channel is estimated over the N used subcarriers based on a result of the correlation.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: December 3, 2019
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Gilberto Berardinelli, Frank Frederiksen, Klaus Ingemann Pedersen, Kari Pekka Pajukoski
  • Patent number: 10484985
    Abstract: A plurality of the same signals to be repetitively transmitted over multiple subframes are multiplied, in each subframe, by one of components of one sequence of a plurality of orthogonal sequences orthogonal to each other thereby generating a transmission signal. The generated transmission signal is transmitted.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: November 19, 2019
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Tetsuya Yamamoto, Hidetoshi Suzuki, Alexander Golitschek Edler von Elbwart, Seigo Nakao
  • Patent number: 10454634
    Abstract: A method for a base station to allocate resources for supporting a plurality of wireless communication modes in a wireless system according to the present invention comprises the steps of: allocating, using frequency-division multiplexing, a first zone composed of orthogonal frequency division multiplexing (OFDM) symbols and a second zone composed of generalized frequency division multiplexing (GFDM) symbols on time and frequency domains; and allocating a predetermined number of guard subcarriers to the boundary between the first zone and the second zone, wherein the predetermined number is determined on the basis of the number of sub-symbols of the GFDM symbols of the second zone.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 22, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangrim Lee, Hyunsoo Ko, Kukheon Choi, Kwangseok Noh, Dongkyu Kim
  • Patent number: 10432356
    Abstract: Provided are a data transmitting or receiving method and device for dual Transport Blocks (TBs), a transmitter and a receiver. Data to be transmitted is divided into two portions, where transport blocks TB1 and TB2 are generated respectively according to a corresponding predetermined Modulation Coding Scheme (MCS) for each portion. The TB1 is modulated into an amplitude weighted complex symbol sequence S1, and the TB2 is modulated into an amplitude weighted complex symbol sequence S2. The S1 and the S2 are superposed to generate a complex symbol sequence S3 corresponding to a new TB, where the complex symbol sequence S3 corresponding to the new TB possesses Gray properties. The new TB is transmitted to a receiver.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: October 1, 2019
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Zhifeng Yuan, Jianqiang Dai
  • Patent number: 10433265
    Abstract: Disclosed in the present application is a method for transmitting a sounding reference signal (SRS) from a terminal to a base station in a time division duplex (TDD) system. More specifically, the method comprises: a step of establishing a first subframe set and a second subframe set through an upper layer, and step of transmitting the sounding reference signal from a specific subframe to the base station, wherein the first subframe set and the second subframe set are configured by an uplink subframe and/or a special subframe, each of the first subframe and the second subframe is associated with a power control process for transmitting an uplink data channel, and wherein the transmission power of the sounding reference signal is determined on the basis of a specific power control process associated with a subframe set to which the specific subframe belongs, from among the first subframe set and the second subframe set.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 1, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jonghyun Park, Hanbyul Seo, Seungmin Lee
  • Patent number: 10425881
    Abstract: A user terminal according to an embodiment includes a receiver that receives a list transmitted from a base station, the list including discovery resource configurations; and a controller that selects a discovery resource configuration from among the discovery resource configurations, and uses the selected discovery resource configuration to directly transmit a discovery signal to other user terminals. Each of the discovery resource configurations includes: time resource information indicating time resources used for transmitting a discovery signal and including a variable number substituted into a mathematical expression; frequency resource information indicating frequency resources used for transmitting the discovery signal and including a range of continuous resource block numbers; and power information indicating transmission power used for transmitting the discovery signal.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: September 24, 2019
    Assignee: KYOCERA Corporation
    Inventors: Masato Fujishiro, Chiharu Yamazaki, Noriyoshi Fukuta, Kugo Morita
  • Patent number: 10411931
    Abstract: Disclosed in the present invention are a method for transreceiving a physical protocol data unit (PPDU) in a wireless communication system and a device for same. More specifically, a method for transmitting a physical protocol data unit (PPDU) using a wireless communication device in a wireless communication system comprises the steps of: generating a PPDU including a legacy preamble, an HE-preamble, and a data field; and transmitting the generated PPDU, wherein a minimum integer number of pilot patterns are defined, wherein the minimum integer number is larger than the value obtained by dividing the total number of subcarriers constituting the data field or a fast Fourier transform (FFT) size value used when generating the PPDU by the total number of pilots, wherein specific pilot patterns from among the pilot patterns are allocated to each symbol of the data field, and wherein the index of a subcarrier to which the pilot is mapped may be determined by the pilot patterns.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: September 10, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunsung Park, Jinsoo Choi, Dongguk Lim, Hangyu Cho, Wookbong Lee
  • Patent number: 10405229
    Abstract: Disclosed are a method and apparatus for controlling interference between Internet of Things (IoT) devices. The method for controlling interference between IoT devices includes: selecting a device that will execute interference avoidance among devices that are capable of performing an inter-thing communication by taking a traffic type into consideration; and receiving interference avoidance information required for the interference avoidance from the device that will execute the interference avoidance. The interference avoidance information includes offset information representing a starting time.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Bum Kim, Soeng-Hun Kim, Han-Il Yu, Ju-Ho Lee, Jae-Hyuk Jang, Kyeong-In Jeong
  • Patent number: 10389566
    Abstract: Provided is a method and device for signal transmission having good PAPR/CM characteristics. With regard to one aspect of said method, the method for transmitting a reference signal in a wireless communication signal comprises a step wherein a reference signal sequence is generated, a step wherein said reference signal sequence is divided with respect to each of multiple sub-blocks, a step wherein each of said plurality of divided reference signal sequence is subject to circular shifting, and a step wherein said plurality of circular shifted reference signals are transmitted via said plurality of sub-blocks.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 20, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Seung Hee Han, Jin Sam Kwak, Jae Hoon Chung, Min Seok Noh, Yeong Hyeon Kwon
  • Patent number: 10382178
    Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: August 13, 2019
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Yoshikazu Kakura
  • Patent number: 10382270
    Abstract: Provided is a method for receiving a downlink control channel in a machine type communication (MTC) device. A method for receiving a downlink control channel can comprise the steps of: receiving first configuration information about an MTC device-operable subband among system bands of a cell; receiving second configuration information, about a subframe, for monitoring a downlink control channel in a cell-specific search space (CSS); and switching from a subband with respect to the first configuration information to a pre-configured cell-common subband and then receiving, in the cell-common subband in a subframe with respect to the second configuration information, a downlink control channel in the CSS and another channel.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: August 13, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyangsun You, Yunjung Yi, Joonkui Ahn, Suckchel Yang, Kunil Yum
  • Patent number: 10348477
    Abstract: A disclosure of the present specification provides a method for transmitting an uplink channel and a demodulation reference signal (DMRS) by a machine type communication (MTC) device. The method may comprise the steps of: determining a frequency resource area for transmitting an uplink channel so as to have a size equal to or smaller than the size of a physical resource block (PRB) including 12 subcarriers; generating a DMRS sequence for some sub-carriers among the 12 subcarriers when the frequency resource area for transmitting the uplink channel is determined to have a size smaller than the size of the PRB including the 12 subcarriers; and transmitting the uplink channel and the DMRS on the some subcarriers in the PRB.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: July 9, 2019
    Assignee: LG ELECTRONICS
    Inventors: Hyangsun You, Yunjung Yi, Bonghoe Kim, Joonkui Ahn, Hanjun Park
  • Patent number: 10348478
    Abstract: Systems and methods for signaling in an increased carrier monitoring wireless communication environment are disclosed herein. A user equipment (UE) may include control circuitry to configure the UE for increased carrier monitoring; determine, based on a first signal received from a network apparatus, whether a reduced performance group carrier is configured; determine, based on a second signal received from the network apparatus, whether a scaling factor is configured; and in response to a determination that no reduced performance group carrier is configured and a determination that no scaling factor is configured, allow the UE to monitor fewer carriers than required by increased carrier monitoring. Other embodiments may be disclosed and/or claimed.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: July 9, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Candy Yiu, Yang Tang, Rui Huang
  • Patent number: 10333657
    Abstract: A wireless communication base station apparatus prevents degradation of throughput of LTE terminals, even when LTE terminals and LTE+ terminals are present together. A setting section sets in each subframe a resource block in which is arranged a reference signal that is employed solely by LTE+ terminals, based on the pattern of arrangement of reference signals employed solely by LTE+ terminals. As to symbols that are mapped to antennas (110-1) to (110-4), an arrangement section arranges the characteristic cell reference signals employed by both LTE terminals and LTE+ terminals in all of the resource blocks in a single frame. In contrast, as to symbols that are mapped to antennas (110-5) to (110-8), the arrangement section arranges in some of the resource blocks, that are set in accordance with the setting results input from a setting section, the characteristic cell reference signals that are employed solely by the LTE+ terminals.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 25, 2019
    Assignee: Sun Patent Trust
    Inventors: Akihiko Nishio, Seigo Nakao
  • Patent number: 10299264
    Abstract: Where first and second reference signals for a first and second communication system, respectively, are transmitted, resources that affect a reception apparatus compatible only with the first communication system can be minimized, and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A, last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used, and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol, or the like, of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information, measures channel quality by using this CSI-RS, and transmits and reports feedback information.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: May 21, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Masayuki Hoshino, Akihiko Nishio, Seigo Nakao, Daichi Imamura
  • Patent number: 10291361
    Abstract: [Problem] To avoid the occurrence of a “DTX-ACK” error or “DTX-NACK” error when a terminal has failed to receive uplink control information. [Solution] A base station (20) of a wireless communication system wherein packet retransmission control is performed by means of a hybrid automatic repeat request (HARQ) is equipped with: a physical uplink shared channel (PUSCH) reception processing unit (104) that, when the transmission timing of HARQ information from a terminal (10) coincides with the transmission timing of a PUSCH transmitted from the terminal (10), receives the HARQ information from the PUSCH and performs a cyclic redundancy check (CRC) on a packet included in the PUSCH; and an HARQ information check unit (105) that performs HARQ-based confirmation of reception at the terminal (10) by receiving the HARQ information checked by the PUSCH reception processing unit (104) and the CRC result.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: May 14, 2019
    Assignee: NEC CORPORATION
    Inventor: Yuki Kogure
  • Patent number: 10270636
    Abstract: In some embodiments, a wireless communication apparatus may include, but is not limited to, a pilot inserter, a segment divider, a phase rotator, and a first adder. The pilot inserter inserts first and second pilot symbols into a symbol stream. The segment divider divides into a plurality of segments a plurality of subcarriers. Each of the subcarriers is allocated with a respective one of the symbols included in the symbol stream into which the first and second pilot symbols have been inserted. The phase rotator performs, for each segment, a phase rotation to all of the symbols, except for a predetermined one of the first and second pilot symbols, included in the symbol stream. The first adder adds together signals corresponding to the subcarriers included in the plurality of segments to which the phase rotation has been performed by the phase rotator to generate a transmission signal.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: April 23, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Tanahashi, Toshiyuki Nakanishi, Yoshimasa Egashira, Noboru Taga
  • Patent number: 10264300
    Abstract: A method for transmitting broadcast signals by an apparatus for transmitting broadcast signals, the method includes encoding service data according to a 16200 bit codeword and a 11/15 code rate based on addresses in a parity check matrix, wherein the encoded service data comprises information bits and parity bits; building at least one signal frame by mapping the encoded service data; modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) scheme; and transmitting broadcast signals having the modulated data, wherein the encoding of the service data comprises: initializing the parity bits, adding the information bits to the parity bits of which addresses are based on values of entries in each row of the parity check matrix, wherein a row of the parity check matrix corresponds to a 360 bit group of the information bits.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: April 16, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Sangchul Moon, Woosuk Ko, Sungryong Hong, Jinwoo Kim, Jongwoong Shin
  • Patent number: 10261930
    Abstract: This invention discloses a system, device and method for transmitting both non-video signals and video signals between different communication interfaces. The system includes a first communication interface, a buffer module, a second communication interface, and an emulator module. The first communication interface is coupled to an electronic device, for transmitting a first differential signal and a first auxiliary signal. The buffer module is coupled to the first communication interface. The second communication interface is coupled to the buffer module, for transmitting a second differential signal. The emulator module is coupled to the second communication interface via a hub. The emulator module receives a second auxiliary signal. Data exchange for the first auxiliary signal and the second auxiliary signal is performed via the second communication interface between the buffer module and the emulator module.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: April 16, 2019
    Assignee: ATEN International Co., Ltd.
    Inventor: Chao-Hsuan Hsueh