Multi-receiver Or Interference Cancellation Patents (Class 375/148)
  • Patent number: 10790871
    Abstract: According to an embodiment there is provided a method of radio resource allocation performed in a gateway or network server communicatively connected to a plurality of wireless nodes. The method comprises computing, for each spreading factor out of a number of spreading factors, a probability of successful receipt of an uplink communication from a wireless node from the plurality of wireless nodes based on spreading factor settings of the plurality of wireless nodes, determining, for a given link level budget, a spreading factor that provides a maximum likelihood of successfully completing uplink communications and determining, for the determined spreading factor, a transmission power that provides the given link level budget.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: September 29, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shengyang Li, Usman Raza, Aftab Khan
  • Patent number: 10785775
    Abstract: The disclosure discloses a Network Assisted Interference Cancellation and Suppression (NAICS) method, apparatus, system and related device, for NAICS based on existing hardware configuration of a terminal. A first NAICS method includes the following steps. NAICS capability information reported by a User Equipment (UE) is received. NAICS assisted signalling is issued to the UE according to the NAICS capability information and/or interference information of a neighbouring base station. A second NAICS method includes the following steps. Transmission Modes (TM) are divided into N TM subsets, each TM subset including at least one TM, N being a natural number. A neighbouring base station is notified of a TM subset scheduled for an interfering UE, wherein the interfering UE includes a UE located at the edge of a coverage area of the neighbouring base station, and the notified TM subset does not include a high-complexity TM.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: September 22, 2020
    Assignee: China Mobile Communications Corporation
    Inventors: Jing Jin, Hui Tong, Fei Wang, Yuchao Liu, Zhenping Hu
  • Patent number: 10779292
    Abstract: The invention relates to a method for scheduling packets belonging to a plurality of data flow categories in a multi-access telecommunication system sharing a plurality of transmission resources. The method comprises at each transmission time interval, selecting, by a planner (CT, CF) a resource allocation plan and allocating the transmission resources to the data flows in accordance with the selected resource allocation plan. This selection is made by querying a look-up table (LUT) the content of which results from the implementation of a reinforcement learning and which makes it possible to identify, from the current state of the multi-access telecommunication system (s[t)]), the resource allocation plan to be selected, this plan being optimum to fulfil heterogeneous needs in terms of quality of service.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: September 15, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Ioan-Sorin Comsa, Antonio De Domenico, Dimitri Ktenas
  • Patent number: 10779243
    Abstract: In one implementation, a wireless communication terminal includes a primary antenna array and a first controller configured to steer a main beam of the primary antenna array in a desired direction. The wireless communication terminal also includes an auxiliary antenna array and a second controller configured to control complex weights to be applied by at least some antenna elements of the auxiliary antenna array to corresponding variants of a second signal received by the at least some auxiliary antenna elements. Furthermore, the wireless communication terminal includes at least one signal combiner configured to combine variants of the second signal received from auxiliary antenna elements into an interfering signal that models interference from a co-located wireless communication terminal and subtract the interfering signal from variants of the first signal received from antenna elements of the principal antenna array to produce an interference mitigated signal.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: September 15, 2020
    Assignee: IRIDIUM SATELLITE LLC
    Inventor: Jeffrey Francis Bull
  • Patent number: 10772125
    Abstract: A method, apparatus, and computer-readable medium at a transmitting network device or a target network device in a listen-before-talk (LBT) session that employ a spatial LBT procedure is disclosed. The spatial LBT procedure takes into account multiple-input multiple-output (MIMO) configuration information in measuring an effective interference. Accordingly, the spatial LBT procedure enables the transmitting network device or the target network device to more accurately measure an interference and make a more accurate decision on whether a channel is clear, and thus improves the system-wide performance. Also, the spatial LBT procedure allows the transmitting network device or the target/receiving network device to adaptively adjust the LBT power detection threshold when the MIMO configuration is not available.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: September 8, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Yisheng Xue, Qingsi Wang, Siddhartha Mallik, Weiliang Zeng, Ahmed Sadek
  • Patent number: 10771093
    Abstract: There is provided an apparatus including an acquisition unit configured to acquire an information block generated from transmission data for a user and subjected to error correction coding and an interleaving unit configured to interleave a bit sequence of the information block using an interleaver unique to the user. The interleaving unit interleaves the bit sequence by interleaving each of two or more partial sequences obtained from the bit sequence.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: September 8, 2020
    Assignee: SONY CORPORATION
    Inventors: Ryota Kimura, Yifu Tang
  • Patent number: 10771143
    Abstract: A switching method for multiple antenna arrays is disclosed which including: turning on a number of antenna arrays of an electronic device, and obtaining multiple received powers of a beam signal; turning off the antenna array(s) other than the antenna array having the largest received power, and calculating multiple first power ratio parameters according to the received powers; calculating a first channel information of the antenna array which is turned on; calculating a first virtual channel information of each of the antenna arrays which are turned off according to the first channel information, the first power ratio parameter corresponding to each of the antenna arrays which are turned off and an angle mapping table; and selecting one of the antenna arrays to turn on according to the first channel information and all the first virtual channel information, and turning off the rest antenna array(s).
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: September 8, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chao-Kai Wen, Zi-Hui Shen, Wan-Ting Shih
  • Patent number: 10746880
    Abstract: According to some embodiments of the present invention there is provided a method for detecting locations of navigation interfering devices. The method comprises an action of receiving multiple navigation signal parameter datasets, each from one of multiple satellite signal receivers. The method comprises an action of detecting one or more interference event data according to an interference analysis of at least some of the datasets. The method comprises an action of updating a probability value for each of multiple suspected navigation interference device locations, by a location analysis of the interference event data, where each of the probability values is indicative of a likelihood that the interference event data originates from some of the suspected navigation interference device locations. The method comprises an action of selecting a subset of the suspected navigation interference device locations according to the probability values and outputting the subset.
    Type: Grant
    Filed: September 16, 2018
    Date of Patent: August 18, 2020
    Assignee: Ariel Scientific Innovations Ltd.
    Inventors: Boaz Ben-Moshe, Roy Yozevitch
  • Patent number: 10715207
    Abstract: A Global Navigation Satellite System (GNSS) receiver demodulates code shift keying (CSK) data utilizing correlations with combinational pseudo-random noise (PRN) codes generated for different bit positions. The GNSS receiver receives a signal including a PRN code modulated by CSK to represent a symbol (i.e., CSK modulated symbol). The GNSS receiver maintains a plurality of receiver codes, each representing a different shift in chips to the PRN code. The GNSS receiver performs a chip-by-chip linear combination of a group of receiver codes for each bit position of the CSK modulated symbol. The GNSS receiver correlates the received signal with each combinational PRN code to produce a binary value that is the CSK modulated symbol.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: July 14, 2020
    Assignee: NovAtel Inc.
    Inventors: David Brown, Patrick C. Fenton
  • Patent number: 10681722
    Abstract: A base station may transmit downlink control information (DCI) scheduling communications between the base station and a UE. The DCI is in a fallback DCI format. Based on whether or not the DCI is in a UE specific search space with cyclic redundancy check (CRC) scrambled by a UE ID of the UE, data transmitted by the base station or by the UE according to the DCI may be scrambled by a sequence that is initialized with a configurable parameter, or initialized with a cell ID.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: June 9, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Amine Maaref, Mohammadhadi Baligh, Jianglei Ma
  • Patent number: 10666337
    Abstract: A radio apparatus in a radio communication system that includes the radio apparatus and a signal processing apparatus that function as a base station, includes a channel estimation unit that, on the basis of a radio signal transmitted from a terminal apparatus, measures a reception quality of the radio signal; and a transmission control unit that, on the basis of the reception quality measured by the channel estimation unit, controls transmission, to the signal processing apparatus, of bit data or a log likelihood ratio obtained from the radio signal.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 26, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kenji Miyamoto, Jun Terada, Tatsuya Shimizu
  • Patent number: 10601529
    Abstract: Embodiments of the disclosure relate to suppressing an uplink radio frequency (RF) interference signal(s) in a remote unit in a wireless distribution system (WDS) using a correction signal(s) relative to the uplink RF interference signal(s). A remote unit in a WDS is configured to receive an uplink RF signal including an uplink RF communications signal(s) and an uplink RF interference signal(s). To mitigate adverse impacts of the uplink RF interference signal(s) on the uplink RF communications signal(s), the remote unit generates an RF correction signal(s) based on identified interference characteristics of the uplink RF interference signal. The remote unit combines the RF correction signal(s) with the uplink RF signal to suppress the uplink RF interference signal(s) to a predetermined level. By doing so, it is possible to mitigate the adverse impacts of the uplink RF interference signal(s), thus preserving integrity and quality of the uplink RF communications signal(s).
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: March 24, 2020
    Assignee: Corning Optical Communications LLC
    Inventor: Dror Harel
  • Patent number: 10594345
    Abstract: A digital communication method includes receiving user bursts at a receiver, generating, by the receiver, an active user list of the user bursts according to a first criterion, selecting, by the receiver, prioritized user bursts from the user bursts in the active user list according to a second criterion that is different from the first criterion to generate a priority user list of the prioritized user bursts, and executing, by the receiver, successive interference cancellation according to the priority user list to demodulate the prioritized user bursts.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: March 17, 2020
    Assignee: HUGHES NETWORK SYSTEMS, LLC
    Inventors: Xiaoming Wu, Qiujun Huang
  • Patent number: 10595330
    Abstract: Method and apparatus for scheduling coordinated transmission in a wireless communication system are provided. According to various embodiments of the present disclosure, an apparatus for controlling resource utilization of a plurality of base stations comprises at least one transceiver configured to receive information about a buffer occupancy state from base stations performing a coordinated transmission, a processor configured to determine transmission states of the base stations based on the information about the buffer occupancy state. The at least one transceiver is further configured to transmit scheduling information comprising the transmission states.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: March 17, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joseph Jeon
  • Patent number: 10560244
    Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for reducing inter-cellsite interference during full-duplex communication. A system receives a channel amplitude and a phase estimate between a first station and a second station, the first station and the second station creating inter-cellsite interference on a channel during full-duplex communications. The system calculates a level of the inter-cellsite interference between the first station and the second station based on the channel amplitude and the phase estimate and generates a cancellation signal based on the inter-cellsite interference. The system then communicates the cancellation signal to the first station for transmission with additional data during additional full-duplex communications.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: February 11, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Rittwik Jana, Vaneet Aggarwal, Lusheng Ji, Rajesh Krishna Panta, Kadangode K. Ramakrishnan, Christopher W. Rice, Nemmara K. Shankaranarayanan, Vinay Anant Vaishampayan
  • Patent number: 10554464
    Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: February 4, 2020
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang
  • Patent number: 10554272
    Abstract: Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which vector or matrix weighting is employed using information fed back from receivers. The feedback information may include channel matrix or SVD-based feedback.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: February 4, 2020
    Assignee: Apple Inc.
    Inventors: Wen Tong, Ming Jia, Jianglei Ma, Peiying Zhu, Hua Xu, Dong-Sheng Yu, Hang Zhang, Mo-Han Fong
  • Patent number: 10539652
    Abstract: A technique is provided for estimating time of arrival of a signal transmitted as a pulse and received as a sum of pulses. The received signal is filtered with a novel filter that lowers the early side lobes of the received signal to noise level. A first energy rise point is identified at a point of the main lobe of the filtered received signal, at which the energy is higher than the noise by a predetermined level. Starting from the identification of the first energy rise points, the time of arrival is estimated via curve matching, in which the shape of the filtered received signal is matched to the shape of a reference curve composed by a sum of one or more reference curves that are shifted both in time and in energy. The reference curves are found by applying to the transmitted signal the same filter applied to the received signal.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: January 21, 2020
    Assignee: Nestwave SAS
    Inventor: Rabih Chrabieh
  • Patent number: 10534066
    Abstract: Provided are a virtual anchor point-based wireless positioning method and device, and terminal.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: January 14, 2020
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Shijun Chen, Guanghui Yu, Liujun Hu, Zhaohua Lu
  • Patent number: 10523303
    Abstract: This application discloses a method and an apparatus for transmitting a signal in a wireless communications system. The method includes: sending or receiving a signal of a first beam in a first beam set within a communication time of the first beam; and sending or receiving a signal of a third beam in a second beam set within a switching gap for switching from the first beam to a second beam in the first beam set. According to the method and the apparatus for transmitting a signal in a wireless communications system in embodiments of this application, overheads can be reduced.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: December 31, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Huang Huang, Wenxian Jiang, Sainan Li
  • Patent number: 10461802
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a method for selecting a spectral region in a radio frequency spectrum for initiating a communication session having an uplink and a downlink, correlating a signal strength of portions of the spectral region to generate a correlation factor, detecting radio frequency interference in the spectral region according to the correlation factor, and generating tuning coefficient data to substantially suppress the radio frequency interference in the spectral region during the communication session. Other embodiments are disclosed.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: October 29, 2019
    Assignee: ISCO International, LLC
    Inventors: Amr Abdelmonem, Sean S. Cordone
  • Patent number: 10462795
    Abstract: A method comprising: measuring separately co-channel interference and cross-channel interference at an apparatus; and providing, to a node, separate information regarding the co-channel interference and the cross-channel interference.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: October 29, 2019
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Esa Tapani Tiirola, Frank Frederiksen, Kari Pekka Pajukoski
  • Patent number: 10454578
    Abstract: A coded visible light receiver comprises: a sensor, a transform module, and an interference cancelling module. The sensor receives light comprising data modulated into the light according to a coding scheme. The transform module is configured to transform the data into a frequency domain representation, representing a band of a spectrum resulting from the data being modulated into the light according to the coding scheme. The interference cancelling module is configured to cancel interference occurring in the band of the data, by determining one or more components in the band that exceed a threshold signal strength and cancelling those components.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 22, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Constant Paul Marie Jozef Baggen, Paul Henricus Johannes Maria Van Voorthuisen, Erik Witberg, Hongming Yang
  • Patent number: 10432502
    Abstract: A disclosure of the present invention is related to a method and an apparatus for overlap-resistant dynamic routing to prevent a path from overlapping. A method of performing an overlap-resistant routing according to an embodiment of the present disclosure includes: computing p candidate paths (p is an integer more than 2) from a first host to a second host based on information related to a network structure; computing k paths (k is an integer more than 1, k?P) with low redundancy from the p candidate paths; and setting one path from the k paths according to a path change timing.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 1, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Jung Ho Myung
  • Patent number: 10389476
    Abstract: Methods and devices for PIM-aware link adaptation are disclosed. According to some aspects, a network node and a method for link adaptation that accounts for passive intermodulation (PIM) at the network node of a wireless communication system are disclosed. A PIM power spectral density (PSD) versus the set of receive frequencies is determined based on at least one transmission frequency of a set of transmission frequencies at at least one antenna. Link adaptation is performed based on the PIM PSD versus a set of receive frequencies. Performing the link adaptation includes choosing at least one transmission parameter of a transmitter scheduled to transmit on a frequency among the set of receive frequencies.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 20, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Alex Stephenne
  • Patent number: 10382102
    Abstract: A 5G-oriented multidimensional adaptive MIMO system including a transmitting antenna array, a first rotary table, a broadband vector signal generator, a receiving antenna array, a second rotary table, a broadband vector signal analyzer and a data acquisition terminal is provided. The broadband vector signal generator and the broadband vector signal analyzer are respectively connected with the transmitting antenna array and the receiving antenna array. The data acquisition terminal is connected with the broadband vector signal generator and the broadband vector signal analyzer. In addition, a method for adjusting radiating modes of antenna ports by using the 5G-oriented multidimensional adaptive MIMO system is also provided.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: August 13, 2019
    Assignee: WUHAN UNIVERSITY
    Inventors: Yigang He, Guolong Shi, Hui Zhang, Bing Li, Baiqiang Yin, Liulu He
  • Patent number: 10374701
    Abstract: An optical signal-to-noise ratio (OSNR) measuring device includes a processor, wherein the processor executes a process. The process includes: converting an optical signal to an electrical signal; first acquiring a signal intensity from the electrical signal; second acquiring a noise intensity of a predetermined frequency band from the electrical signal; performing a digital conversion on the noise intensity; and computing an OSNR of the optical signal based on the signal intensity and the converted noise intensity. The predetermined frequency band is a frequency band including a folding noise that occurs when the digital conversion is performed.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: August 6, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Shoichiro Oda, Setsuo Yoshida, Keisuke Harada
  • Patent number: 10367625
    Abstract: Provided is a method by a first transmitting node transmitting, in cooperation with two other transmitting nodes, radio signals using two radio resource units to three receiving nodes which the respective transmitting nodes serve, the method being performed by the first transmitting node and comprising: establishing, for a first receiving node, a CSI-RS resource and a CSI-IM resource; receiving, from the first receiving node, a first recommended PMI for the first transmitting node according to information measured in the CSI-RS resource and the CSI-IM resource, and receiving, from the remaining two transmitting node, a second recommended PMI for the first transmitting node, which has been reported from the remaining two receiving nodes; and muting at a first wireless resource unit among the two wireless resource units, and transmitting, at the second wireless resource unit, a wireless signal based on the first recommended PMI or the second recommended PMI.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: July 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunho Lee, Hyukjin Chae, Seungmin Lee
  • Patent number: 10367544
    Abstract: Methods and apparatuses are provided for searching for a cell by a communication processor (CP) of a wireless terminal having a plurality of antennas. One of the plurality of antennas is selected based on whether a secondary antenna is in a driving state and whether a finger of a rake receiver has been allocated. The plurality of antennas includes a primary antenna and the secondary antenna. A cell search is performed through the selected one of the plurality of antennas.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: July 30, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Dae-Cheol Kwon, Jong-Han Kim, Jae-Hyung Lee
  • Patent number: 10362541
    Abstract: In one implementation, a wireless communication terminal includes a primary antenna array and a first controller configured to steer a main beam of the primary antenna array in a desired direction. The wireless communication terminal also includes an auxiliary antenna array and a second controller configured to control complex weights to be applied by at least some antenna elements of the auxiliary antenna array to corresponding variants of a second signal received by the at least some auxiliary antenna elements. Furthermore, the wireless communication terminal includes at least one signal combiner configured to combine variants of the second signal received from auxiliary antenna elements into an interfering signal that models interference from a co-located wireless communication terminal and subtract the interfering signal from variants of the first signal received from antenna elements of the principal antenna array to produce an interference mitigated signal.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: July 23, 2019
    Assignee: IRIDIUM SATELLITE LLC
    Inventor: Jeffrey Francis Bull
  • Patent number: 10355812
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A transmission method for multiple access is provided. The transmission method including performing, by a transmitter, channel coding on a bit sequence to determine a coded sequence, performing, by the transmitter, symbol modulation on the coded sequence, performing, by the transmitter, grid mapping on the modulated symbol sequence to determine a mapped sequence, and transmitting the mapped sequence.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: July 16, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Qi Xiong, Bin Yu, Chen Qian, Chengjun Sun
  • Patent number: 10348522
    Abstract: The present invention relates to a device and a method for detecting a transmission signal in a wireless communication system, and a reception device in a wireless communication system comprises: a transceiver for receiving a signal from a transmitting end; a first correlator for performing a first correlation and outputting a real part among the results of the first correlation; a second correlator for performing a second correlation and outputting an imaginary part among the results of the second correlation; and a control unit for controlling the first correlator and the second correlator on the basis of a channel change rate so as to detect a transmission signal.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: July 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeongsam Kim, Youngkwan Choi, Hayoung Yang, Joohyun Lee
  • Patent number: 10341143
    Abstract: Methods and apparatus of channel estimation using time-domain parameter extraction are disclosed. The wireless channel can be modeled by a multipath model with a limited number of parameters in the continuous time domain. Extracting the time-domain parameters and then reconstructing the channel yields channel estimates that have better accuracy. Time-domain parameter extraction also has lower computational complexity than existing methods.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 2, 2019
    Inventor: Xiao-an Wang
  • Patent number: 10333683
    Abstract: Different Out-of-sync thresholds are defined for Radio Link Monitoring by a UE having a selectively enabled advanced receiver feature. When the advanced receiver feature is disabled, the UE monitors received signal quality and compares a signal quality metric to a first threshold developed for a reference receiver. When the advanced receiver feature is enabled, the UE compares the signal quality metric to a second threshold indicating lower signal quality than the first threshold. In either case, if the signal quality meets the respective threshold, the UE goes Out-of-sync. The Out-of-sync UE continues to monitor received signal quality. Regardless of whether the advanced receiver feature is enabled or not, a third threshold, developed for the reference receiver, is applied to determine when to return to In-sync. In one embodiment, the reference receiver enables two antennas, and the advanced receiver feature is enabling four antennas.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: June 25, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Torgny Palenius, Christopher Callender, Maomao Chen, Fredrik Nordström
  • Patent number: 10305710
    Abstract: The present invention relates to a method for operating, by a base station, multiple modulation schemes in a wireless communication system, the method comprising the steps of: calculating the number of terminals, among the terminals in a cell managed by the base station, of which a channel state is included in a state that is lower than a preset state; reporting information related to the calculated number of terminals to an upstream entity of the base station; receiving information about a band, assigned by the upstream entity, for a hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) scheme on the basis of a QAM scheme and a FSK scheme; and transmitting downwardly the information about the band for the FQAM scheme to the terminals of which a channel state is included in a state that is lower than the preset state. Other modified embodiments on the basis of the technical concept of the present invention are also possible.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: May 28, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Sagong, Jeong-Ho Park, Jae-Won Kim, Hyun-Kyu Yu, Chi-Woo Lim, Su-Ryong Jeong, Sung-Nam Hong
  • Patent number: 10290920
    Abstract: A wireless receiver includes an antenna panel divided into a plurality of segments, each segment having a group of antennas, each segment having a set of radio frequency (RF) front end chips. Each RF front end chip is coupled to some antennas in the group of antennas. A master chip is configured to drive in parallel a plurality of control buses. Each control bus is coupled to a respective one of the plurality of segments, where each RF front end chip in the set of RF front end chips is serially coupled to another RF front end chip in the set of RF front end chips. Each control bus carries phase shift signals and amplitude control signals from the master chip to a respective set of RF front end chips in each segment. The master chip and the plurality of segments in the antenna panel are integrated on a single printed circuit board.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: May 14, 2019
    Assignee: Movandi Corporation
    Inventors: Michael Boers, Farid Shirinfar, Sam Gharavi, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran, Ahmadreza Rofougaran
  • Patent number: 10237106
    Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: March 19, 2019
    Assignee: Apple Inc.
    Inventors: Jianglei Ma, Wen Tong, Ming Jia, Hua Xu, Peiying Zhu, Hang Zhang
  • Patent number: 10211908
    Abstract: Provided is a multi-antenna relay device. The multi-antenna relay device having first to n-th (n is a natural number of 2 or more) channel formed between receiving antennas and transmitting antennas corresponding to each other, comprising: first to n-th channel interference cancellation units, respectively, included in a corresponding channel among the first to n-th channels and canceling first to n-th channel interference signals corresponding to signals radiated through the first to n-th channels from signal input into the corresponding channel in real time.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: February 19, 2019
    Assignee: SOLiD, INC.
    Inventor: Hyunchae Kim
  • Patent number: 10193659
    Abstract: The present invention relates to a method and apparatus for channel estimation between a transmitter and a receiver in a wireless communications system.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: January 29, 2019
    Assignee: Cohda Wireless Pty Ltd.
    Inventor: Paul Dean Alexander
  • Patent number: 10187804
    Abstract: An apparatus and a method for allocating wireless channels are disclosed. For example, the method, by an aggregator, aggregates sensed information received from a plurality of sensing devices, by an analyzer, analyzes the sensed information that is aggregated and determines when an incumbent is not detected based on the analysis, and allocates, by a channel allocator, a wireless channel of the targeted frequency spectrum to a user equipment when the incumbent is not detected.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 22, 2019
    Assignee: Intel Corporation
    Inventors: Beeshanga Jayawickrama, Ying He, Markus Dominik Mueck, Biljana Badic, Kilian Roth, Srikathyayani Srikanteswara, Zhibin Yu, Eryk Dutkiewicz
  • Patent number: 10181872
    Abstract: An example method of capacitive sensing includes: receiving at least one code division multiplexed (CDM) signal transmitted from different transmitters using different codes over a plurality of signal bursts, wherein a length of each of the different codes is equal to or greater than a number of the different transmitters; filtering the at least one CDM signal using an impulse response filter, wherein the filtering comprises: accumulating the at least one CDM signal over the plurality of signal bursts to obtain measurements of the at least one CDM signal; and for the measurements of the at least one CDM signal, applying different filter weights to the resulting signals over a number of the plurality of signal bursts that is greater than the length of the different codes.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: January 15, 2019
    Assignee: SYNAPTICS INCORPORATED
    Inventor: Joseph Kurth Reynolds
  • Patent number: 10175945
    Abstract: Systems and methods for improving correlation. In at least one system and method, a signal is received and divided into a plurality of slices. Each of the slices is divided into a plurality of sub-slices. A plurality of chips of a PN code are generated, and sub-slice correlation results are generated in parallel. Summation of the sub-slice correlation results generates a slice correlation results, and the accumulated slice correlation results provide a correlation result.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: January 8, 2019
    Assignee: NextNav, LLC
    Inventors: Vikram V. Kalkunte, Subramanian S. Meiyappan
  • Patent number: 10177937
    Abstract: The present invention relates to a method and apparatus for adaptive channel estimation for signal-amplitude-based communications systems. In one arrangement, the method comprises: receiving an observation (r) of a transmitted coded symbol (d); generating, with a weight generator, a first coefficient (v) for weighting the received observation based on an estimate of the transmitted coded symbol (d_est), the first coefficient having a magnitude that is invariable with the amplitude of the transmitted coded symbol; and forming a new channel estimate (h_est) based on a weighted observation using the first coefficient (v).
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: January 8, 2019
    Assignee: Cohda Wireless Pty Ltd.
    Inventor: Paul Dean Alexander
  • Patent number: 10177830
    Abstract: An array antenna system 3 includes: a transmission unit 14 to which a plurality of pulse signals are given, the pulse signals being obtained by pulse-modulation of digital transmission signals, and including analog transmission signals corresponding to the digital transmission signals, the transmission unit 14 being configured to transmit, as radio signals, the plurality of analog transmission signals included in the plurality of pulse signals; and a plurality of adjustment units 15 configured to perform, for the plurality of pulse signals to be given to the transmission unit 14, an adjustment process for adjusting the relationship of relative phases of the plurality of analog transmission signals included in the plurality of pulse signals.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Takashi Maehata
  • Patent number: 10158432
    Abstract: A radio frequency (RF) signal separation and suppression system includes an input that couples in a radio frequency signal comprising desired and undesired radio frequency signals. The RF signal separation and suppression system also includes a reproduction generator connected to the input. The reproduction generator produces a reproduction from the radio frequency signal of the undesired signal at an output. The RF signal separation and suppression system also includes an electrical subtractor having a first input that is electrically connected to the output of the reproduction generator and a second input that is electrically connected to the input of the radio frequency signal separation system. An output of the subtractor generates an output radio frequency signal comprising the desired radio frequency signal and a suppressed undesired radio frequency signal.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: December 18, 2018
    Assignee: Photonic Systems, Inc.
    Inventors: Edward I. Ackerman, Charles H. Cox
  • Patent number: 10152457
    Abstract: An apparatus may include a circuit including a filter configured to update one or more adaptive coefficients of the filter based on an error signal. Further, the circuit may update a constrained coefficient of the filter based on the one or more adaptive coefficients, the constrained coefficient and a desired value. Moreover, the circuit may generate a sample of a sample sequence based on the one or more adaptive coefficients and the updated constrained coefficient, the error signal being based on the sample sequence.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 11, 2018
    Assignee: Seagate Technology LLC
    Inventors: Jason Vincent Bellorado, Marcus Marrow, Zheng Wu
  • Patent number: 10148315
    Abstract: The present invention relates to a method and a device for adjusting a signal of a receiving device in a mobile communication system and, more specifically, to a method for adjusting a signal of a receiving device in a mobile communication system, the method comprising the steps of: receiving signals from at least two antennas; calculating at least one correlation value by using the received signals; obtaining a delay difference value between the signals based on the at least one calculated correlation value; and outputting adjusted signals generated by adjusting the received signals based on the obtained delay difference value.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 4, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaesang Ham, Hyuncheol Kim, Yusuk Yun
  • Patent number: 10132864
    Abstract: The present disclosure describes a novel method and apparatus for using a device's power and ground terminals as a test and/or debug interface for the device. According to the present disclosure, messages are modulated over DC voltages applied to the power terminals of a device to input test/debug messages to the device and output test/debug messages from the device. The present disclosure advantageously allows a device to be tested and/or debugged without the device having any shared or dedicated test or debug interface terminals.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: November 20, 2018
    Assignee: Texas Instruments Incorporated
    Inventor: Lee D. Whetsel
  • Patent number: 10129071
    Abstract: The present disclosure provides a symbol synchronization method and apparatus. By means of the symbol synchronization method and apparatus, a timing location is adjusted outside an adaptive loop. In addition, the adaptive loop proceeds to according to an original function of the adaptive loop. That is, the timing location is stabilized to an initial symbol-synchronization location, and the timing location is then further corrected and adjusted. Therefore, impact of an error of a timing location on symbol synchronization is eliminated by correcting the timing location, and positioning accuracy of a symbol-synchronization location is improved.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: November 13, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaodong Li, Qiao Liu
  • Patent number: 10129883
    Abstract: Techniques for spread spectrum wireless over non-contiguous channels are described. In at least some embodiments, a set of channels is selected for wireless communication, with at least some of the channels being non-contiguous (e.g., non-adjacent) from one another. A spreading sequence is selected, such as based on attributes of a selected set of channels. Communication data that is to be transmitted over the set of channels is combined with the spreading sequence to generate a spread spectrum signal. The spread spectrum signal is then divided into multiple sub-signals for transmission over the set of channels.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Amer Aref Hassan, Paul William Alexander Mitchell, Paul W. Garnett