Patents by Inventor Yi-Pin Eric Wang

Yi-Pin Eric Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200252858
    Abstract: Enabling a UE to determine whether the UE can skip the acquisition of SIB1-BR. An indication (e.g., a one bit flag) in the MIB is provided, which indication is set to a particular value if the UE needs to read SIB1-BR, otherwise the indication is set to a different value indicating that the UE can skip reading SIB1-BR assuming other conditions are met (e.g., assuming that the UE has previously read SIB1-BR within a MIB indication time period).
    Type: Application
    Filed: May 3, 2018
    Publication date: August 6, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Yi-Pin Eric WANG, Johan BERGMAN, Andreas HÖGLUND, Olof LIBERG, Antti RATILAINEN, Yutao SUI, Tuomas TIRRONEN, Anders WALLÉN, Emre YAVUZ
  • Patent number: 10736150
    Abstract: A method of transmitting a signal over a physical random access channel, wherein the signal comprises a plurality of symbols forming a symbol group. The method comprises applying scrambling to a plurality of symbols within the symbol group.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: August 4, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xingqin Lin, Margaretha Forsgren, Fredrik Huss, Olof Liberg, Yi-Pin Eric Wang
  • Publication number: 20200245365
    Abstract: Random Access (RA) formats are defined for NB-IoT operation in TDD mode. The formats are defined to allow use of in the legacy LTE subframe configurations for TDD. The formats specify a predetermined, even number P of symbol groups composing a RA preamble, wherein each symbol group comprises a Cyclic Prefix (CP) and a number X of symbols. The P symbol groups are divided into symbol group sets fitting into 1, or 2, or 3 contiguous uplink subframes, each comprising at least two symbol groups transmitted back-to-back (i.e., contiguously in time), and at least two symbol group sets are transmitted non-contiguously in time across a number of uplink subframes over which the RA preamble is transmitted. The number of symbol groups in a set can be two or three, and the number of symbol groups is four or six, respectively. Symbol groups within a set are transmitted on adjacent uplink subframes. Five format options are defined, which map to various of the LTE TDD configurations.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 30, 2020
    Inventors: Xingqin Lin, Johan Mikael Bergman, Andreas Höglund, Gerardo Agni Medina Acosta, Hazhir Shokri Razaghi, Yutao Sui, Yi-Pin Eric Wang
  • Patent number: 10728930
    Abstract: A communications network is being accessed by a wireless device associated with a coverage class selected from a set of coverage classes. The wireless device performs a method comprising initiating network access to the communications network by transmitting a preamble sequence for random access on a physical random access channel during a starting opportunity defined by the coverage class of the wireless device. Each coverage class may be associated with a unique number of repetitions of the preamble sequence transmission.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: July 28, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Xingqin Lin, Ansuman Adhikary, Johan Mikael Bergman, Yufei Blankenship, Asbjörn Grövlen, Hazhir Shokri Razaghi, Yutao Sui, Yi-Pin Eric Wang
  • Publication number: 20200236571
    Abstract: An apparatus, method and wireless device for fast scanning of a wireless communications medium are disclosed. According to one aspect, a method includes tuning a transceiver of the wireless node to a first frequency. The method further includes computing a first difference frequency, the first difference frequency being a difference between the first frequency and a second frequency. The method further includes generating a first control signal to configure a first backscattering device to switch between at least two states at a switching frequency equal to the first difference frequency.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 23, 2020
    Inventors: Miguel LOPEZ, Yi-Pin Eric WANG
  • Publication number: 20200187151
    Abstract: A method and one or more network nodes for use in a wireless communication network to determine whether a wireless device is aerial. The one or more one or more network nodes communicate with the wireless device to instruct to report one or more metrics of wireless device parameters. The one or more network nodes receives from the wireless device a report of the metrics and then compares the reported metrics to terrestrial metrics to determine whether the wireless device is aerial.
    Type: Application
    Filed: June 29, 2018
    Publication date: June 11, 2020
    Inventors: Yi-Pin Eric WANG, Mattias BERGSTRÖM, Sebastian EULER, Shiwei GAO, Xingqin LIN, Helka-Liina MÄÄTTANEN, Siva MURUGANATHAN, Vijaya YAJNANARAYANA
  • Patent number: 10681741
    Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: June 9, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xingqin Lin, Ansuman Adhikary, Asbjörn Grövlen, Dennis Hui, Niklas Johansson, Yutao Sui, Mårten Sundberg, Yi-Pin Eric Wang
  • Publication number: 20200177360
    Abstract: A method in a node is disclosed. The method comprises receiving a signal, and obtaining a first oversampled received signal by sampling the received signal according to a symbol rate. The method further comprises estimating a first frequency offset based on the first oversampled received signal, the first frequency offset estimated using an estimation range limited to one of a bandwidth of the received signal or the symbol rate of the received signal, and obtaining a second oversampled received signal by sampling the received signal according to N times the symbol rate, wherein N is greater than 1. The method further comprises estimating a true frequency offset based on the first frequency offset estimate and the second oversampled received signal.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Inventors: Ansuman Adhikary, Niklas Johansson, Yi-Pin Eric Wang
  • Patent number: 10673653
    Abstract: A receiver baseband processor and method for performing preamble detection and Time-of-Arrival, ToA, estimation for a single-tone frequency hopping random access preamble. The processor FFT processes a received signal and identifies logical tones. For each logical tone, the processor reads received symbols; determines a ToA estimate; forms a statistic based on the ToA estimate; compares the statistic to a preamble threshold; and when the statistic is greater than or equal to the threshold, determines a preamble is present and utilizes the ToA estimate for a timing advance command.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: June 2, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Xingqin Lin, Yi-Pin Eric Wang, Ansuman Adhikary
  • Publication number: 20200154426
    Abstract: A method for managing a wireless connection of an Unmanned Aerial Vehicle (UAV) is described herein. In one embodiment, the method comprises receiving flight information describing a flight path for the UAV; determining a set of network resources for the UAV based on the flight information; and reserving the set of network resources by a first network cell and a second network cell of a wireless network based on the flight information.
    Type: Application
    Filed: July 10, 2017
    Publication date: May 14, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Attila TAKÁCS, Ravi MANGHIRMALANI, Heikki MAHKONEN, Yi-Pin Eric WANG, Xingqin LIN
  • Publication number: 20200128480
    Abstract: A radio network node may operate in a normal or restricted operating state. In the restricted operating state, the radio network node may have just enough activity to enable UEs to detect the cell. The radio access node may transition to the normal operating state in response to messaging from a wireless communication device, such as reception of a random access preamble.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 23, 2020
    Inventors: Ali NADER, Yi-Pin Eric WANG, Ansuman ADHIKARY
  • Publication number: 20200120563
    Abstract: A method for managing an unmanned aerial vehicle (UAV) is described. The method may include receiving flight plan information describing a flight path of the UAV; generating one or more cell lists based on the flight plan information; and transmitting the one or more cell lists to a source cell in a wireless network in which the UAV is currently operating, wherein the one or more cell lists are used in a handover procedure between the source cell that the UAV is currently connected to and a target cell that the UAV will connect to after completing the handover procedure.
    Type: Application
    Filed: December 11, 2017
    Publication date: April 16, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Attila TAKÁCS, Ravi MANGHIRMALANI, Heikki MAHKONEN, Yi-Pin Eric WANG, Xingqin LIN
  • Publication number: 20200112413
    Abstract: A method in a user equipment is disclosed. The method comprises generating a narrowband random access preamble for a narrowband random access procedure, the narrowband random access preamble comprising a Zadoff-Chu sequence. The method comprises transmitting, to a network node, the generated narrowband random access preamble via a narrowband physical random access channel (PRACH) according to a narrowband PRACH format, wherein the narrowband PRACH is frequency multiplexed with a physical uplink shared channel (PUSCH) and comprises: at least one narrowband PRACH slot having a narrowband PRACH slot duration; and a narrowband PRACH period.
    Type: Application
    Filed: December 10, 2019
    Publication date: April 9, 2020
    Inventors: Xingqin LIN, Ansuman ADHIKARY, Niklas JOHANSSON, Yi-Pin Eric WANG
  • Patent number: 10609545
    Abstract: According to some embodiments, a method for use in a wireless device of acquiring system information in a frequency-hopping network comprises obtaining an indication that the wireless device is configured for frequency hopping among a plurality of frequency channels. At least one of the plurality of frequency channels is a discovery channel. The discovery channel includes one or more dense discovery signals. A dense discovery signal is denser than a corresponding discovery signal included in the non-discovery channels of the plurality of frequency channels. The method further comprises tuning a radio receiver of the wireless device to the discovery channel, and acquiring system information using the one or more dense discovery signals. For example, a discovery signal (e.g. NPSS, NSSS, NPBCH, etc.) of the non-discovery channel may include one occurrence per frame and the corresponding discovery signal of the discovery channel includes more than one occurrence per frame.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: March 31, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Havish Koorapaty, Yi-Pin Eric Wang, Amitav Mukherjee
  • Patent number: 10609686
    Abstract: A method performed by a user equipment (UE) in idle mode, for determining common search space (CSS) for NB-IoT paging is disclosed. The method comprises determining a set of periodic subframes as a Paging Occasion (PO) subframe pattern. The method further comprises monitoring a starting subframe of paging CSS for a Radio Network Temporary Identifier (RNTI). The starting subframe of paging CSS is determined as follows: a first subframe (SF0) defined by the Paging Occasion subframe pattern, is used when SF0 is determined to be a valid downlink subframe. A next valid downlink subframe after SF0 is used when SF0 is determined to be an invalid downlink subframe.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: March 31, 2020
    Inventors: Yufei Blankenship, Yutao Sui, Yi-Pin Eric Wang, Asbjörn Grövlen, Hazhir Shokri Razaghi, Xingqin Lin, Ansuman Adhikary, Johan Bergman
  • Publication number: 20200077338
    Abstract: A method for a user equipment, a method for a network equipment, a user equipment and a network equipment is disclosed. The network equipment transmits a signal pertaining to if control information is present in a first time period while the user equipment determines if a signal pertaining to control information is present in a first time period. The network equipment transmits control information to a UE in accordance with the transmitted signal while the user equipment decides whether to attempt to decode the control information depending on the determination.
    Type: Application
    Filed: March 23, 2018
    Publication date: March 5, 2020
    Inventors: Yutao SUI, Johan BERGMAN, Andreas HÖGLUND, Olof LIBERG, Xingqin LIN, Yi-Pin Eric WANG
  • Publication number: 20200076544
    Abstract: Systems and methods for determining configurable timing relationships and operational parameters are provided. In some embodiments, a method of operation of a wireless device in a wireless system includes determining round-trip propagation delay information between the wireless device and a network node. This round-trip propagation delay information may be a round-trip propagation delay a quantized round-trip propagation delay, or any other value indicative of the round-trip propagation delay. The in method also includes determining a Hybrid Automatic Retransmission Request (HARQ) operational parameter based on the round-trip propagation delay information between the wireless device and the network node. In this way, HARQ is extended to work for deployments with large round-trip propagation delays, such as satellite systems. This may increase the throughput and reliability of data transmission.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 5, 2020
    Inventors: Xingqin Lin, Ansuman Adhikary, Ali S. Khayrallah, Mikael Prytz, Magnus Stattin, Yi-Pin Eric Wang
  • Patent number: 10554366
    Abstract: A method in a user equipment (110) is disclosed. The method comprises generating (504) a narrowband random access preamble for a narrowband random access procedure, the narrowband random access preamble comprising a Zadoff-Chu sequence. The method comprises transmitting (508), to a network node (115), the generated narrowband random access preamble via a narrowband physical random access channel (PRACH) (210, 305) according to a narrowband PRACH format, wherein the narrowband PRACH (210, 305) is frequency multiplexed with a physical uplink shared channel (PUSCH) (215, 315) and comprises: at least one narrowband PRACH slot (410) having a narrowband PRACH slot duration; and a narrowband PRACH period (205).
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: February 4, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xingqin Lin, Ansuman Adhikary, Niklas Johansson, Yi-Pin Eric Wang
  • Publication number: 20200037364
    Abstract: A method of transmitting a signal over a physical random access channel, wherein the signal comprises a plurality of symbols forming a symbol group. The method comprises applying scrambling to a plurality of symbols within the symbol group.
    Type: Application
    Filed: May 2, 2018
    Publication date: January 30, 2020
    Inventors: Xingqin Lin, Margaretha Forsgren, Fredrik Huss, Olof Liberg, Yi-Pin Eric Wang
  • Publication number: 20200028658
    Abstract: Embodiments herein disclose e.g. a method performed by a wireless device (10) for handling communication for the wireless device in a second wireless communication network. The second wireless communication network coexists with a first wireless communication network on a same bandwidth in frequency, wherein the first wireless communication network applies a first shift in frequency in uplink transmissions. The wireless device receives from a radio network node (12,13), an indication indicating application of a second shift in frequency to uplink transmissions in case the second wireless communication network uses Frequency Division Duplex (FDD). The wireless device further applies the second shift in frequency to uplink transmissions, wherein the second shift defines a shift in frequency to a subcarrier relative to a subcarrier grid of the second wireless communication network or a shift in frequency to the subcarrier grid of the second wireless communication network.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 23, 2020
    Inventors: Robert Baldemair, Johan Bergman, Erik Dahlman, Olof Liberg, Stefan Parkvall, Yi-Pin Eric Wang