Diversity (frequency Or Time) Patents (Class 375/347)
  • Patent number: 10693543
    Abstract: A method includes obtaining, by a terminal, a quantity M of beamforming vectors needing to be reported by the terminal and a first reference signal that are sent by a base station; estimating downlink channel states on N dual-polarized antenna ports based on the first reference signal; selecting m first beamforming codewords based on the downlink channel states and the quantity M of beamforming vectors needing to be reported that is sent by the base station; and feeding back the m selected first beamforming codewords and ranks of the downlink channel states to the base station.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: June 23, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yanliang Sun, Bin Liu
  • Patent number: 10687368
    Abstract: A sequence allocating method and apparatus wherein in a system where a plurality of different Zadoff-Chu sequences or GCL sequences are allocated to a single cell, the arithmetic amount and circuit scale of a correlating circuit at a receiving end can be reduced. In ST201, a counter (a) and a number (p) of current sequence allocations are initialized, and in ST202, it is determined whether the number (p) of current sequence allocations is coincident with a number (K) of allocations to one cell. In ST203, it is determined whether the number (K) of allocations to the one cell is odd or even. If K is even, in ST204-ST206, sequence numbers (r=a and r=N?a), which are not currently allocated, are combined and then allocated. If K is odd, in ST207-ST212, for sequences that cannot be paired, one of sequence numbers (r=a and r=N?a), which are not currently allocated, is allocated.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: June 16, 2020
    Assignee: Panasonic Corporation
    Inventors: Daichi Imamura, Takashi Iwai, Kazunori Inogai, Sadaki Futagi, Atsushi Matsumoto
  • Patent number: 10681098
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: June 9, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Min-ho Kim, Sung-woo Park, Sung-kyu Jung, Chang-hoon Choi, Doo-chan Hwang
  • Patent number: 10673509
    Abstract: The present invention relates to the signaling of channel quality information in a multi-beam transmission system, wherein a plurality of beams are simultaneously transmitted and a plurality of sets of channel quality information are transmitted for controlling independently the transmission rate on the different beams. Determined are beams with a different quality resulting in different effects of errors in the transmissions of the channel quality information for the beams. Said different effects are exploited for reducing a signaling overhead of the channel quality information for the beams.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: June 2, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Matthew Peter John Baker, Timothy James Moulsley
  • Patent number: 10667143
    Abstract: Aspects of the present disclosure generally relate to techniques and apparatus that may help improve greatly reduce the implementation complexity of the ground station, and ground base-station user capacity by utilizing a subband beamformer for processing uplink signals received from aircraft at ground base stations, in an air-to-ground (ATG) system. The techniques presented herein may allow for dynamic subband allocation to different airborne devices with multi-user beamforming and subband combining.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: May 26, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Chih-Hao Liu, June Namgoong, Srikant Jayaraman
  • Patent number: 10645653
    Abstract: Methods and systems for providing reduced bandwidth acquisition latency may comprise communicating a reservation request for bandwidth allocation for devices operating under a wired network protocol, where the reservation request may be sent by wired network devices via a wireless network protocol over a wireless network. Bandwidth may be allocated in the wired network for the requesting devices by a network controller. Data may be communicated with the requesting devices via the wired network. The wired network communication protocol may comprise a multimedia over cable alliance (MoCA) standard. The wireless protocol may comprise an IEEE 802.11x standard, a Bluetooth standard, and/or any non-public network protocol. The communication of the reservation request via the wireless protocol may decrease a latency of the wired network. A medium access plan (MAP) may be generated by the network controller based on the reservation request and may comprise a bandwidth allocation for the requesting devices.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: May 5, 2020
    Assignee: Maxlinear, Inc.
    Inventors: James Qiu, Sridhar Ramesh, Sheng Ye, Curtis Ling
  • Patent number: 10616773
    Abstract: An MIMO training method including performing transmission sector sweeping using an initiator including a plurality of transmitting antennas, selecting a set of at least one transmission sector for each of the transmitting antennas using a responder including a plurality of receiving antennas; performing reception sector sweeping using the initiator, selecting a set of at least one reception sector for each of the plurality of receiving antennas using the responder, performing beam combination training using the initiator; and selecting a determined number of sector pairs consisting of a transmission sector and a reception sector from among the selected set of transmission sectors and the selected set of reception sectors using the responder, wherein the transmitting antennas in the selected sector pairs differ from one another, and the receiving antennas in the selected sector pairs differ from one another.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: April 7, 2020
    Assignee: Panasonic Corporation
    Inventor: Lei Huang
  • Patent number: 10608762
    Abstract: A system and method for improving the DRM (Digital Radio Mondiale) signal acquisition time stores the demodulated DRM signal and accesses it from memory in order to avoid the additional time taken in waiting for service description channel (SDC) data. The system includes an antenna to receive a DRM signal. A tuner tunes the frequency of receiver to a desired range. An asynchronous sample rate converter (ASRC) converts the sampling rate of the received signal to a demodulator sampling rate. A demodulator demodulates the received signal. A memory stores the demodulated signal for reuse. A channel splitter splits the received signal into a fast access channel (FAC), a service description channel (SDC), and a main service channel (MSC). A channel decoder decodes the channel split data. A middleware and an application parses and processes the data in order to output the processed data.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: March 31, 2020
    Assignee: INNTOT TECHNOLOGIES PRIVATE LIMITED
    Inventors: Abdul Sameeh Parangodath, Prasanth Padmalayam Thankappan, Amala Mery Shyjy Podimattathil Varghese
  • Patent number: 10601472
    Abstract: Systems and methods for providing improved cell-edge antenna performance are disclosed. The system can use various signal quality indicators (SQIs) for each user equipment (UE) on a particular wireless base station (WBS) or network. When one or more of these metrics reaches a first predetermined value for a particular UE, the WBS or the UE can decide to activate a diversity receive (Rx) antenna on the UE to improve reception. If one or more of these metrics continues to degrade to a second predetermined value, however, the WBS or the UE can deactivate the diversity Rx antenna and activate a primary Rx antenna. Deactivating the diversity antenna when signal quality/strength is poor can improve reception by reducing interference between the diversity Rx antennas. Disabling the diversity Rx antenna when signal quality/strength is poor can also decrease the number of retransmission requests from each UE, reducing traffic on the WBS.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: March 24, 2020
    Assignee: T-Mobile USA, Inc.
    Inventors: Ming Shan Kwok, Wafik Abdel Shahid
  • Patent number: 10564198
    Abstract: A method for spurious signal reduction when measuring a spectrum of a radio frequency signal over a frequency span. The radio frequency signal is converted to a sequence of intermediate frequency signals using a sequence of local oscillator signals each having a different frequency. The sequence of intermediate frequency signals are converted to a sequence of digitized intermediate frequency signal sample sets, each set having a frequency value and a signal energy value. The frequency span is divided into frequency sample bins. For each frequency sample bin, all frequency domain samples from the sequence of frequency domain sample sets having a frequency value within the frequency sample bin are associated with that sample bin. For each frequency sample bin, of the frequency domain samples associated with that frequency bin, the frequency domain sample having the signal energy value that is lowest is selected for a combined frequency domain sample set.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: February 18, 2020
    Assignee: Signal Hound, INC.
    Inventor: Justin Crooks
  • Patent number: 10567205
    Abstract: Methods, systems, and devices for wireless communications are described that support frequency and time domain multiplexing for low peak-to-average waveforms with multiple streams. A user equipment (UE) may identify sets of symbols associated with different streams (e.g., multiple single-carrier discrete Fourier transform (DFT)-spread waveforms), where each stream may be associated with a low peak-to-average power ratio (PAPR). In some cases, different waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM). The UE may further reduce the PAPR of the multiplexed waveforms by performing time division multiplexing (TDM) across the single-carrier streams, and sets of symbols that are not used by one waveform may be used by another waveform. Frequency domain phase ramps may be applied to align the multiplexed waveforms.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: February 18, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Seyong Park, Sony Akkarakaran, Wei Zeng, Peter Gaal, Yi Huang, Renqiu Wang, Hao Xu, Tao Luo, Tingfang Ji
  • Patent number: 10554290
    Abstract: A digital repeater system for repeating RF signals comprises: a receiving section for receiving an RF input signal, the RF input signal comprising at least one frequency band including a multiplicity of subbands associated with a multiplicity of communication channels; and at least one transmitting section for transmitting the RF output signal. The receiving section is constituted to digitize the RF input signal to obtain a digital input signal and to isolate, within the digital input signal, the multiplicity of subbands from each other to obtain a multiplicity of digital subband signals. The at least one transmitting section is constituted to combine the digital subband signals to obtain a digital output signal and to convert the digital output signal to an RF output signal.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: February 4, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Keld Knut Lange, Luigi Tarlazzi
  • Patent number: 10536200
    Abstract: A method that may include receiving, by multiple antennas of a receiver, received signals that are received with diversity and represent transmitted signals; and processing, by at least one processor of the receiver, the received signals to provide processed signals that are indicative of the transmitted signals; wherein the processing comprises applying a dimension-reducing process. The dimension-reducing process may be channel independent.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: January 14, 2020
    Assignee: RAMOT AT TEL AVIV UNIVERSITY LTD
    Inventors: Uri Erez, Elad Domanovitz
  • Patent number: 10524233
    Abstract: Some techniques and apparatuses described herein may assign resource elements of a particular resource block for transmission by two or more different antennas in a fashion such that the symbols are interleaved in frequency and/or in time, which improves frequency diversity of the two or more different antennas, thereby improving uplink performance of the UE. In some aspects, when the two or more resource blocks are contiguous, then each antenna may produce an interleaved frequency division multiple access (IFDMA) waveform, which may maintain peak to average power ratio (PAPR) properties of a single channel FDMA transmission. Thus, some techniques and apparatuses described herein may achieve transmit diversity and/or frequency diversity of a stream of symbols on two or more antennas without significantly increasing the PAPR of the stream of symbols.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: December 31, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Sony Akkarakaran, Seyong Park, Tao Luo, Wei Zeng, Hao Xu, Peter Gaal, Yi Huang, Renqiu Wang
  • Patent number: 10491351
    Abstract: A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: November 26, 2019
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 10470213
    Abstract: The present invention relates to a method and an apparatus for implementing Listen-Before-Talk. According to an embodiment of the present invention, if the channel assessment does not stop at a boundary of the first symbol, the preamble comprises at least a first part, and if the channel assessment stops at the boundary of the first symbol, the preamble comprises a second part. And the first part is transmitted on a remaining portion of the first symbol until the end of the first symbol, and the second part is transmitted on at least one symbol following the first symbol. Besides, the data is transmitted to the receiving device in at least one symbol in the subframe in which the preamble transmission ends.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 5, 2019
    Assignee: Alcatel-Lucent
    Inventors: Jianguo Liu, Feng Han, Yan Meng, Gang Shen, Sigen Ye, Jun Wang, Matthew Baker
  • Patent number: 10436826
    Abstract: A test and measurement device is described that includes a radio frequency input for receiving a radio frequency signal, a mixer to mix the radio frequency signal into a first intermediate frequency signal, a splitter to split the first intermediate frequency signal into several split signals, several signal paths for processing the several split signals, and a recombiner that is configured to recombine the split signals in order to create an output signal having a frequency span substantially representing the one of the radio frequency signal. Further, a method for calibrating a test and measurement device and a method for analyzing a high bandwidth of a radio frequency signal are described.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: October 8, 2019
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Gregor Feldhaus, Alexander Roth, Matthias Ruengeler
  • Patent number: 10432437
    Abstract: A communication device for use within a communication system, the device comprising: re-sampling circuitry configured to output re-sampled digital downlink signals by re-sampling digital downlink signals at resample rates based on at least one factor, the re-sampled digital downlink signals having a smaller bandwidth than the digital downlink signals; and framing circuitry configured to multiplex the re-sampled digital downlink signals and to generate a first frame that includes the re-sampled digital downlink signals as framed data for transport to one or more remotely located communication devices of the communication system, wherein the one or more remotely located communication devices of the communication system are configured to transmit radio frequency signals using at least one antenna, wherein the transmitted radio frequency signals are derived from the framed data of the first frame received from the communication device.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: October 1, 2019
    Assignee: CommScope Technologies LLC
    Inventors: Thomas Kummetz, Van E. Hanson, Christopher Goodman Ranson
  • Patent number: 10389557
    Abstract: A communication device for use within a communication system, the device comprising: re-sampling circuitry configured to output re-sampled digital downlink signals by re-sampling digital downlink signals at resample rates based on at least one factor, the re-sampled digital downlink signals having a smaller bandwidth than the digital downlink signals; and framing circuitry configured to multiplex the re-sampled digital downlink signals and to generate a first frame that includes the re-sampled digital downlink signals as framed data for transport to one or more remotely located communication devices of the communication system, wherein the one or more remotely located communication devices of the communication system are configured to transmit radio frequency signals using at least one antenna, wherein the transmitted radio frequency signals are derived from the framed data of the first frame received from the communication device.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 20, 2019
    Assignee: CommScope Technologies LLC
    Inventors: Thomas Kummetz, Van E. Hanson, Christopher Goodman Ranson
  • Patent number: 10390279
    Abstract: A method and system for an enhanced uplink (EU) operation in a wireless communication system during soft handover. The system comprises a wireless transmit/receive unit (WTRU), at least two Node-Bs, and a radio network controller (RNC). One Node-B may be designated as a primary Node-B, and the primary Node-B may control EU operation during soft handover including uplink scheduling and hybrid automatic repeat request (H-ARQ). Soft buffer corruption is avoided during soft handover by controlling H-ARQ by the primary Node-B. Alternatively, an RNC may control EU operation during soft handover including H-ARQ. In this case, an RNC generates final acknowledge/non-acknowledge (ACK/NACK) decision based on the error check results of the Node-Bs.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: August 20, 2019
    Assignee: Signal Trust for Wireless Innovation
    Inventors: Stephen G. Dick, Stephen E. Terry, Guodong Zhang, James M. Miller, Sung-Hyuk Shin
  • Patent number: 10389777
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Min-ho Kim, Sung-woo Park, Sung-kyu Jung, Chang-hoon Choi, Doo-chan Hwang
  • Patent number: 10341471
    Abstract: A packet analysis apparatus, method, and non-transitory computer readable medium thereof are provided. The packet analysis apparatus stores a plurality of packets whose formats are unknown. The packet analysis apparatus calculates a plurality of cross-correlation values of the packets. The packet analysis apparatus decides at least one group according to the cross-correlation values and at least one first threshold, wherein each group includes a subset of the packets. The packets included in a specific group of the groups define a plurality of bit positions. Each packet included in the specific group has a plurality of bits. For each of the bit positions, the packet analysis apparatus calculates a variation degree of the bits corresponding to the bit positions. The packet analysis apparatus selects the at least one bit position whose variation degree(s) is/are smaller than a second threshold as at least one field boundary of the specific group.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 2, 2019
    Assignee: ONWARD SECURITY CORPORATION
    Inventors: Chao Yeh Lai, Chien Tsung Liu, Yu Chieh Li
  • Patent number: 10326515
    Abstract: When a radio frequency (RF) unit is provided with a delay line or a switch, as the number of arrays (the number of antennas) increases, the parasitic capacitance of the antennas increases and the insertion loss of the switch increases. In addition, the insertion loss may further increase at high frequencies expected to be used in the future. An array antenna apparatus of the present invention is provided with: a plurality of antennas that receive signals; a plurality of down-converters that are connected respectively to the plurality of antennas and that down-convert the received signals; and a switch that selects at least one signal from among the plurality of down-converted signals, and transmits the at least one signal to an A/D converter.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: June 18, 2019
    Assignee: NEC CORPORATION
    Inventors: Naoki Oshima, Ikuma Ando
  • Patent number: 10326501
    Abstract: As disclosed herein is a multiple-input multiple-output (MIMO) radio transceiver which may include a plurality of antennas operatively coupled to a first integrated circuit (IC). The first IC and the plurality of antennas may receive a first radio signal on a first radio frequency (RF) carrier and a second radio signal on a second RF carrier. The first RF carrier and the second RF carrier may be different carriers. The first radio signal and the second radio signal may have different bandwidths. The first IC may demodulate the first received radio signal to produce a first baseband signal and the second received radio signal to produce a second baseband signal. A second IC may be operatively coupled to the first IC and may recover data from at least the first baseband signal and the second baseband signal.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: June 18, 2019
    Assignee: IPR Licensing, Inc.
    Inventors: Gary L. Sugar, Robert M. Masucci, David G. Rahn
  • Patent number: 10320498
    Abstract: The influence of a multipath noise and an adjacent interference noise on the quality of reception of a broadcast is indexed in accordance with a received electric field strength level, and a broadcast station which is a station selection target is searched for using this index value.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: June 11, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masa Yamashima, Kazunari Yamada, Daisuke Saitou
  • Patent number: 10320523
    Abstract: A method for detecting a sent sequence, a receiver, and a receiving device in order to simplify an algorithm for detecting a sent sequence and improve detection efficiency. The method for detecting a sent sequence includes determining a maximum possible candidate value of each element in N elements of a received element sequence to obtain N maximum possible candidate values, where N is a positive integer, determining state sequences corresponding to the N maximum possible candidate values as reserved sequences to obtain N groups of reserved sequences, performing likelihood computation on the N groups of reserved sequences, and setting a reserved sequence that is in the N groups of reserved sequences and is most consistent with the element sequence as a detected sent sequence.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: June 11, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bentao Wu, Bangning Mao
  • Patent number: 10313052
    Abstract: A method and relay for relaying messages. The relay includes tests reliability relating solely to messages estimated with error and taken in their form prior to error detection in order to be able to separate messages that are reliable and messages that are not reliable. The relay also includes a shaper unit having a channel interleaver and a modulator taking account only of the messages estimated without error and of those messages estimated with error that are reliable, this shaping being performed in soft form if at least one message estimated with error successfully passes the reliability test.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: June 4, 2019
    Assignee: ORANGE
    Inventors: Raphael Visoz, Abdulaziz Mohamad, Antoine Berthet
  • Patent number: 10312979
    Abstract: A wireless access point device wirelessly communicates with a plurality of wireless client devices. The wireless access point includes a central processor subsystem and a plurality of transceiver devices each including a plurality of antennas, and a plurality of radio transceivers, each of the plurality of transceiver devices configured for deployment throughout a coverage area, each transceiver device being connected to the central processor subsystem via a respective cable. The central processor subsystem distributes in-phase and quadrature baseband samples across the plurality of transceiver devices associated with traffic to be transmitted and received via the plurality of transceiver devices in one or more frequency bands so as to synthesize a wideband multiple-input multiple-output transmission channel and a wideband multiple-input multiple-output reception channel. The access point transmit and receive functions are “split” or partitioned across the plurality of transceivers devices.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: June 4, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Brian D. Hart, Paul J. Stager, David Kloper, Jie Cheng Jiang
  • Patent number: 10305786
    Abstract: A method of processing messages within a distributed computer system in order to compensate for latency effects within the distributed computer system, the distributed computer system comprising a plurality of user devices and a message processing device, the method comprising: receiving a message from a user device at a message management device; determining if the received message corresponds to a message type that requires compensation for latency delays; and, in the event that the message does not require compensation, forwarding the message to the message processing device; and, in the event that the message does require compensation for latency effects, calculating a randomized delay period, and holding the message at the message management device for the calculated delay period and subsequently forwarding the message to the message processing device.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: May 28, 2019
    Assignee: Maven Securities Holding Limited
    Inventor: Richard Aked
  • Patent number: 10292162
    Abstract: A user service mode selection method in the case of 3D beams, a pilot frequency information sending method and apparatus are disclosed. The selection method includes: comparing the total number of the users to be served with that of scheduling units; selecting a single-user service mode for each user when the total number of the users to be served is smaller than that of scheduling units; selecting J user groups meeting a preset condition to adopt a multi-user service mode when the total number of the users to be served is not smaller than that of scheduling unit, J is an integer greater than 1, and 2J is an integer not greater than the total number of the users to be served; one time-frequency resource only corresponds to one beam configured for communication in the single-user service mode but at least two beams in the multi-user service mode.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: May 14, 2019
    Assignee: ZTE Corporation
    Inventors: Meiling Ding, Fan Shi
  • Patent number: 10270640
    Abstract: Various systems and methods are provided for channel estimation. These systems and methods (a) determine a coherence bandwidth for the channel, (b) adapt the channel estimation based on the coherence bandwidth, and (c) perform channel estimation by transmitting a channel estimation symbol over a channel. In some embodiments, the channel estimation is adapted based on the coherence bandwidth. This may include selecting a number of channel estimation symbols to transmit in a packet. Additionally, the number of channel estimation symbols transmitted in a packet can be selected by increasing the number of channel estimation symbols when the coherence bandwidth of the channel is high or decreasing the number of channel estimation symbols when the coherence bandwidth of the channel is low.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: April 23, 2019
    Assignee: Entropic Communications, LLC
    Inventor: Arndt J. Mueller
  • Patent number: 10268406
    Abstract: An information storage device is a device that communicates over a network with another device that is used by another user different from an own user who uses an own device, and includes a storage unit including a first storage area available to the own user and a second storage area available to the other user, an information output unit that outputs information of the own user stored in the first storage area to the other device over the network, an information writing unit that stores information of the other user output by the other device over the network, in the second storage area, and a use control unit that controls whether the second storage area is available to the own user on the basis of an instruction of the other user.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 23, 2019
    Assignee: NIKON CORPORATION
    Inventors: Takeaki Sugimura, Kazuyuki Kazami, Atsushi Tanaka, Soichiro Tsuboi, Genshi Yoshioka, Daisuke Yuki
  • Patent number: 10263687
    Abstract: A phase-diversity radio-frequency receiver, including two tuners tuned to the same frequency in order to produce two intermediate frequency signals, a combiner capable of implementing a constant modulus algorithm, CMA, in order to combine the two intermediate frequency signals into a single signal, a controller capable of transforming the single signal into a final signal having a constant envelope, the controller being parametrized by a control coefficient defining the control convergence speed, the control coefficient being recalculated permanently in accordance with at least one multi-path level.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: April 16, 2019
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventor: Jean-Christophe Grzeskowiak
  • Patent number: 10256858
    Abstract: In one embodiment, an apparatus includes: a first radio receiver to receive and downconvert a first radio frequency (RF) signal to a first digital signal; a second radio receiver to receive and downconvert a second RF signal to a second digital signal; a correlation circuit to receive the first and second digital signals and determine a correlation between the first and second digital signals; a weight calculation circuit to determine a first weight value and a second weight value based at least in part on the correlation; and a combiner circuit to combine the first and second digital signals according to the first and second weight values.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: April 9, 2019
    Assignee: Silicon Laboratories Inc.
    Inventor: Alexander August Arthur Hakkola
  • Patent number: 10225297
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Min-ho Kim, Sung-woo Park, Sung-kyu Jung, Chang-hoon Choi, Doo-chan Hwang
  • Patent number: 10211877
    Abstract: An antenna diversity circuit having a plurality of processing chains including first and second processing chains configured to communicate with a first antenna, and process signals for first and second carriers, respectively, and third and fourth processing chains configured to communicate with a second antenna, and process signals for the first and second carriers, respectively; and a dynamic antenna diversity controller configured to activate one or more of the plurality of processing chains based on a predetermined set of criteria.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: February 19, 2019
    Assignee: Intel Corporation
    Inventor: Thorsten Clevorn
  • Patent number: 10200153
    Abstract: There is provided a decoder for sequentially decoding a data signal received through a transmission channel in a communication system, said data signal carrying transmitted symbols, said decoder comprising a symbol estimation unit (301) configured to determine estimated symbols representative of the transmitted symbols carried by the received signal from information stored in a stack, said symbol estimation unit (301) being configured to iteratively fill the stack by expanding child nodes of a selected node of a decoding tree comprising a plurality of nodes, each node of the decoding tree corresponding to a candidate component of a symbol of said data signal and each node being assigned a metric, the stack being filled at each iteration with a set of expanded child nodes and being ordered by increasing values of the metrics assigned to the nodes, the selected node for each iteration corresponding to the node being assigned the lowest metric in the stack, the decoder comprising a metric determination unit (302
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: February 5, 2019
    Assignee: INSTITUT MINES-TELECOM
    Inventors: Asma Mejri, Mohamed-Achraf Khsiba, Ghaya Rekaya Ben-Othman
  • Patent number: 10193712
    Abstract: A method for processing a receive radio signal is provided. The method may include receiving in a mobile device a receive radio signal, equalizing the receive radio signal using a first equalizer to generate a first equalized receive radio signal, equalizing the receive radio signal using a second equalizer to generate a second equalized receive radio signal, re-synthesizing a transmit signal from the second equalized receive radio signal, calculating a subtraction signal based on the re-synthesized transmit signal, and subtracting the subtraction signal from the equalized receive radio signal.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Intel IP Corporation
    Inventors: Dirk Waldhauser, Clemens Buchacher
  • Patent number: 10194339
    Abstract: Methods and systems are provided for enabling a base station to receive signals and synchronization information from neighboring base stations over a frequency band designated for transmissions to mobile devices. In embodiments, a cancellation signal is used to cancel antenna overload resulting from a base station's own transmission. By negating antenna overload, the base station may listen for synchronization signals output by neighboring base stations over the frequency band designated for transmission to mobile devices, such as a downlink band, for example. In embodiments, synchronization signals are used by the base station and/or a server to detect when synchronization failures occur at the base station and/or neighboring base stations. Synchronization signals from a neighboring base station may be used to re-synchronize a base station that have experience such a failure, in some embodiments.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: January 29, 2019
    Assignee: Sprint Communications Company L.P.
    Inventors: Timothy Hugh Pearson, Roger Danforth Bartlett, Steven Kenneth Guthrie
  • Patent number: 10187129
    Abstract: Disclosed are a channel state feedback information determination method, a terminal, a base station and a communication system. The method includes that: a channel state is measured to form a measurement result; when a Rank Indicator (RI) is 2, a precoding matrix is formed according to the measurement result and a precoding codebook matrix model W; and channel state feedback information is formed according to the precoding matrix. The disclosure further discloses a computer storage medium.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: January 22, 2019
    Assignee: ZTE Corporation
    Inventors: Jing Zhao, Yijian Chen, Zhaohua Lu, Huahua Xiao
  • Patent number: 10181934
    Abstract: The present disclosure provides NOMA between a unicast PDSCH signal and a SC-PTM signal. The apparatus receives, at a first UE, a combined signal including a first data transmission and a second data transmission. The apparatus also determines at the first UE, a first set of symbols for the first data transmission intended for the first UE. The apparatus further determines at the first UE, a second set of symbols for the second data transmission intended for a second UE. In an aspect, the first data transmission and the second data transmission include at least one overlapping resource element. In another aspect, the first set of symbols and the second set of symbols differ by at least one symbol. The apparatus also decodes, at the first UE, the first data transmission, based at least in part on the determined first set of symbols and the determined second set of symbols.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: January 15, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Peter Gaal
  • Patent number: 10142038
    Abstract: A MIMO signal generator is adapted to generate a MIMO signal is provided. The MIMO signal generator comprises a signal generator, a signal divider and a frequency shifter. The signal generator is adapted to generate a plurality of frequency shifted partial MIMO signals within a first signal generator output signal. The frequency shifted partial MIMO signals being arranged on the frequency axis in a non-overlapping manner. The signal divider is adapted to divide the first signal generator output signal into a plurality of signal paths. The frequency shifter preferably comprises a frequency shifting device in at least one of the plurality of signal paths. The frequency shifting devices are adapted to shift the frequencies of the plurality of frequency shifted partial MIMO signals to a joint carrier frequency, resulting in a plurality of partial MIMO signals, forming the MIMO signal.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 27, 2018
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Corbett Rowell, Vincent Abadie, Werner Kehlenbach
  • Patent number: 10129010
    Abstract: Embodiments of a dual-mode radio system are disclosed. In one embodiment, the radio system includes a first radio unit including a transmitter, a receiver, an antenna, and switching circuitry adapted to couple either an output of the transmitter of the first radio unit or an input of the receiver of the first radio unit to the antenna of the first radio unit. In addition, the radio system includes a second radio unit including an antenna and either a transmitter having an output coupled to the antenna of the second radio unit, a receiver having an input coupled to the antenna of the second radio unit, or both a transmitter having an output selectively coupled to the antenna of the second radio unit and a receiver having an input selectively coupled to the antenna of the second radio unit. The radio system has both a full-duplex mode and a half-duplex mode.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: November 13, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Mark Wyville
  • Patent number: 10128920
    Abstract: An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: November 13, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: J. Rodney Walton, John W. Ketchum, John Edward Smee, Mark S. Wallace, Steven J. Howard
  • Patent number: 10122566
    Abstract: It is proposed a method for delay spread classification of an orthogonal frequency-division multiplexing signal (multiplexing signal), and a receiving device and a telecommunication device connected thereto, the multiplexing signal comprising at least a first multiplexing symbol comprising at least two first reference symbols in the frequency domain, the method comprising: receiving at least the first multiplexing symbol; demodulating at least the first reference symbols of the first multiplexing symbol; determining at least a first autocorrelation value by autocorrelating the demodulated first reference symbols in the frequency domain; computing the filtered output energy of the autocorrelation and classifying the delay spread by mapping the ratio of the output energy for the filters.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 6, 2018
    Assignee: Intel IP Corporation
    Inventors: Javier Mauricio Paredes Riano, Andreas Bury
  • Patent number: 10090951
    Abstract: A method and apparatus for transmitting a notification about broadcasting services in a broadcasting system are provided. A method of a network entity includes detecting a notification event about a broadcasting service, the notification event including a change of a service guide of the broadcasting service; generating a notification message about the notification event; determining which channel is used for a transmission of the notification message; and transmitting the notification message to a terminal or a group of terminals over the determined channel. The channel used for the transmission of the notification message is determined based on whether the notification message is transmitted over a broadcast channel of a broadcast network or over an interaction channel of an interaction network. The service guide is generated based on service guide related information provided by a service provider of the broadcasting service.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 2, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Oh Hwang, Eun-Jung Kim, Joon-Goo Park
  • Patent number: 10050653
    Abstract: Circuits and methods related to switchless carrier aggregation in radio-frequency receivers. In some embodiments, a carrier aggregation (CA) circuit can include a first filter configured to allow operation in a first frequency band, and a second filter configured to allow operation in a second frequency band. The CA circuit can further include a first signal path implemented between the first filter and an output node, with the first signal path including a plurality of amplification stages configured to amplify a first radio-frequency (RF) signal. The first signal path can be substantially free of switches. The CA circuit can further include a second signal path implemented between the second filter and the output node, with the second signal path including a plurality of amplification stages configured to amplify a second RF signal. The second signal path can be substantially free of switches.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: August 14, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventor: Ibrahim Engin Pehlivanoglu
  • Patent number: 10031165
    Abstract: Wireless charging methods, chargers and devices are disclosed, including a method of measuring wireless charging performance comprising transmitting a wireless charging signal, measuring a transmitted power of the wireless charging signal, receiving an indication of a received power from the wireless charging signal received by a device, and determining wireless charging performance based on the transmitted power and the indication of the received power.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: July 24, 2018
    Assignee: QUALCOMM Technologies International, LTD.
    Inventor: Anthony Lawrence McFarthing
  • Patent number: 10020863
    Abstract: A method for wireless communication includes monitoring a channel of a radio frequency spectrum band using at least a first receiver and a second receiver in parallel; determining, during the monitoring, at least a first received signal strength of a first receiver output of the first receiver, and a second received signal strength of a second receiver output of the second receiver; and selecting, based on the first received signal strength and the second received signal strength, one or both of the first receiver output or the second receiver output for use in decoding a candidate information signal of unknown signal strength. The first and second receivers are set to first and second fixed gain state providing the first and second receivers with first and second dynamic ranges. The second dynamic range partially overlaps the first dynamic range to provide the wireless device an extended dynamic range.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: July 10, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Victor Abramsky, Guy Wolf
  • Patent number: 10014900
    Abstract: Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: July 3, 2018
    Assignee: Apple Inc.
    Inventors: Xiaowen Wang, Syed Aon Mujtaba, Vinay R. Majjigi, Joonsuk Kim