Patents by Inventor Yufei Blankenship

Yufei Blankenship 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: 20230027932
    Abstract: Systems and methods are described herein that allow information carrying bits of a transmission block to be placed at higher-reliability positions prior to transmission. An exemplary method includes generating a set of payload bits to be encoded for transmission, wherein the set of payload bits includes at least one known bit, interleaving the set of payload bits to generate an interleaved set of payload bits, wherein the interleaved set includes the at least one known bit in a predetermined position in the interleaved set, providing the interleaved set to a cyclic redundancy check (CRC) encoder to generate CRC-interleaved set of payload bits, wherein the CRC-interleaved set includes the at least one known bit in a predetermined position within the CRC-interleaved set, and encoding the CRC-interleaved set for transmission to a wireless device. Associated network nodes and wireless devices are included.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 26, 2023
    Inventors: Anders Wesslén, Dennis Hui, Yufei Blankenship
  • Publication number: 20230025192
    Abstract: Systems and methods are disclosed herein for determining and using a Transport Block Size (TBS) when two or more Low Density Parity Check (LDPC) base graphs can be used for LPDC coding. In some embodiments, a method comprises determining an approximate TBS for a transport block communicated between a network node and a wireless device via a physical channel transmission, determining a TBS for the transport block based on a smallest entry in a table that is larger than or equal to the approximate TBS, and transmitting or receiving the transport block according to the determined TBS.
    Type: Application
    Filed: September 20, 2022
    Publication date: January 26, 2023
    Inventors: Mattias ANDERSSON, Yufei BLANKENSHIP, Sara SANDBERG
  • Publication number: 20230021623
    Abstract: According to some embodiments, a method performed by a wireless device for decoding physical shared channels (PSCHs) comprises, for a plurality of PSCHs in a transmission time interval, determining a first PSCH of the plurality of PSCHs at least partially overlaps in time with a second PSCH of the plurality of PSCHs. Based on comparison of a common characteristic of the first PSCH and the second PSCH, the method comprises selecting one of the first PSCH and the second PSCH to decode and decoding the selected PSCH.
    Type: Application
    Filed: December 7, 2020
    Publication date: January 26, 2023
    Inventors: Mattias Andersson, Yufei Blankenship, Kittipong Kittichokechai, Ali Behravan
  • Patent number: 11564258
    Abstract: A method of operating a wireless terminal may include transmitting a random access preamble of a random access procedure from the wireless terminal to a node of a radio access network. After transmitting the random access preamble, a random access response of the random access procedure may be received from the node of the radio access network, with the random access response including an Uplink grant for a Message 3 uplink communication of the random access procedure. The UL grant may include a time domain configuration associated with the Message 3 uplink communication. The time domain configuration may include a repetition factor that defines a number of repetitions across subframes for the Message 3 uplink communication, and/or Transmission Time Interval information for the Message 3 uplink communication. Related wireless terminals and base stations are also discussed.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: January 24, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Tuomas Tirronen, Yufei Blankenship, Johan Bergman, Emre Yavuz
  • Publication number: 20230015550
    Abstract: Methods, a terminal device and a base station for random access procedure are disclosed. According to an embodiment, the terminal device determines a frequency hopping configuration for transmission of one or more physical uplink shared channels (PUSCHs) in a request message for random access. The terminal device transmits the one or more PUSCHs in the request message based on the frequency hopping configuration. The request message at least comprises a physical random access channel (PRACH) preamble and the one or more PUSCHs.
    Type: Application
    Filed: May 22, 2020
    Publication date: January 19, 2023
    Inventors: Zhipeng LIN, Yufei BLANKENSHIP, Robert Mark HARRISON, Jianwei ZHANG
  • Patent number: 11552728
    Abstract: Methods, systems, and apparatus are provided for encoding code blocks for transmission in a wireless communication system. An example encoding method in a wireless communication system includes determining, for one or more code blocks of a transport block, that at least one of a plurality of criteria is met, wherein the plurality of criteria includes that a coding rate (R) is less than or equal to ¼ or that a transport block size (TBS) is less than or equal to 3824 bits and the R is less than or equal to ?. The one or more code blocks are encoded using low-density parity-check (LDPC) base graph 2, wherein a maximum code block size is 3840 bits. The one or more encoded code blocks are transmitted over the wireless network.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: January 10, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sara Sandberg, Mattias Andersson, Yufei Blankenship, Amirpasha Shirazinia
  • Publication number: 20220400496
    Abstract: A method, system and apparatus are disclosed for priority indication. In one embodiment, a wireless device is configured to receive a priority indicator associated with a downlink control information, DCI, message, the DCI message being associated with one of an uplink-configured grant, UL-CG, configuration and a downlink-semipersistent assignment, DL-SPS, configuration; and determine a use of the priority indicator associated with the DCI message. In another embodiment, a network node is configured to determine a use of a priority indicator associated with a downlink control information, DCI, message; and send the priority indicator associated with the DCI message according to the determined use, the DCI message being associated with one of an uplink-configured grant, UL-CG, configuration and a downlink-semipersistent assignment, DL-SPS, configuration.
    Type: Application
    Filed: November 6, 2020
    Publication date: December 15, 2022
    Inventors: Majid GERAMI, Jonas FRÖBERG OLSSON, Yufei BLANKENSHIP, Alexey SHAPIN, Kittipong KITTICHOKECHAI, Bikramjit SINGH, Jianwei ZHANG
  • Publication number: 20220394753
    Abstract: A method performed by a wireless device comprises receiving (700) a first grant that allocates first radio resources for use by the wireless device and a second grant that allocates second radio resources for use by the wireless device, where the first radio resources partially overlap in time with the second radio resources. The method further comprises splitting (710) the first grant into a first non-overlapping grant and a first overlapping grant, where the first non-overlapping grant allocates a portion of the first radio resources which do not overlap in time with the second radio resources and the first overlapping grant allocates another portion of the first radio resources which overlap in time with the second radio resources.
    Type: Application
    Filed: November 7, 2020
    Publication date: December 8, 2022
    Inventors: Abdulrahman Alabbasi, Kittipong Kittichokechai, Yufei Blankenship
  • Publication number: 20220386336
    Abstract: A method and network node for configuring a WD, to perform uplink transmissions using an uplink configured grant, UL-CG, or a dynamic grant is provided. The network node signals by radio resource control, RRC, signaling to the WD, a time domain resource assignment, TDRA, table for the uplink transmissions. The network node signals further signals to the WD, an indication of a particular repetition factor to be used by the WD to determine when to perform the uplink transmissions.
    Type: Application
    Filed: October 7, 2020
    Publication date: December 1, 2022
    Inventors: Majid GERAMI, Bikramjit SINGH, Niklas ANDGART, Yufei BLANKENSHIP, Jonas FRÖBERG OLSSON, Mattias ANDERSSON, Jianwei ZHANG
  • Patent number: 11515893
    Abstract: According to some embodiments, a method use in a wireless transmitter of a wireless communication network comprises encoding information bits using a parity check matrix (PCM) and transmitting the encoded information bits to a wireless receiver. The parity check matrix (PCM) is optimized according to two or more approximate cycle extrinsic message degree (ACE) constraints. In some embodiments, a that portion of the PCM is optimized according to a first ACE constraint and a second portion of PCM is optimized according to a second ACE constraint.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: November 29, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sara Sandberg, Mattias Andersson, Yufei Blankenship
  • Publication number: 20220377706
    Abstract: A method by a wireless device includes determining a value of a Sounding Reference Signal (SRS) request field size. The wireless device receives downlink control information (DCI) from a network node. The DCI is received according to a format. The wireless device selects a SRS resource set based on the format of the DCI and the value of the SRS request field size.
    Type: Application
    Filed: November 3, 2020
    Publication date: November 24, 2022
    Inventors: Kittipong Kittichokechai, Yufei Blankenship, Mattias Andersson
  • Publication number: 20220376820
    Abstract: A system and method for selecting a number of cyclic redundancy check bits in a communication system. In one embodiment, an apparatus operating in a communication system is configured to receive scheduling information from the communication system, and determine an information block length (K) and/or code rate (R) for a code block including a sequence of data bits from the scheduling information. The apparatus is further configured to determine a number of cyclic redundancy check (CRC) bits as a function of the information block length (K) and/or code rate (R) for the code block.
    Type: Application
    Filed: December 22, 2017
    Publication date: November 24, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sara SANDBERG, Mattias ANDERSSON, Yufei BLANKENSHIP, Amirpasha Shirazinia
  • Patent number: 11497035
    Abstract: The present disclosure described systems and methods for providing OTT services to a UE. An exemplary OTT-providing host computer includes a transceiver, a processor, and memory collective configured to provide the OTT service by initiating transmission of user data to the UE. To transmit the user data from the host computer to the wireless device, a network node sends a first control message for assigning a PDSCH, the first control message comprising a first MCS indication as described. The network node sends to the wireless device a second control message for assigning a PDSCH, the second control message comprising a second MCS indication as described. The network node transmits the user data thereafter.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: November 8, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhipeng Lin, Jingya Li, Robert Baldemair, Yufei Blankenship, Jung-Fu Cheng, Xingqin Lin, Ajit Nimbalker
  • Patent number: 11497022
    Abstract: A method in a network node includes communicating, over a narrowband Internet of Things downlink, a first message to a first wireless device during repetition periods of at least a first time frame and a second time frame of a plurality of time frames of a transmission time of a narrowband physical downlink control channel (NB-PDCCH) or a narrowband physical downlink shared channel (NB-PDSCH). Each time frame of the plurality of time frames includes a repetition period and a gap. The method also includes communicating a second message to a second wireless device during a gap of the first time frame.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: November 8, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Hazhir Shokri Razaghi, Ansuman Adhikary, Johan Bergman, Yufei Blankenship, Asbjörn Grövlen, Xingqin Lin, Yutao Sui, Yi-Pin Eric Wang
  • Patent number: 11476873
    Abstract: Methods and systems described herein are directed to encoding information bits for transmission. The methods can include receiving a set of information bits (900) and determining a set of parity check bits (910). The set of information bits is concatenated with the set of parity check bits (920), and the information bits are polar encoded into a set of information bits and frozen bits (930). The encoded set of information bits is transmitted to a wireless receiver (940). In particular embodiments, each parity check bit in the set of parity check bits is the binary sum of the values of all bits in front of it. Other embodiments include generating a set of parity check bits based on a systematic block code on the least reliable bits of the set of information bits. The methods and systems described herein may be applied to 3GPP 5G mobile communication systems.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: October 18, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Yufei Blankenship, Michael Breschel
  • Publication number: 20220330254
    Abstract: Systems and methods are disclosed herein for determining and indicating antenna ports in Downlink Control Information (DCI). In one embodiment, a method performed by a wireless communication device comprises receiving a configuration comprising a Demodulation Reference Signal (DMRS) configuration and an antenna port field configuration for an antenna port field in a Downlink Control Information (DCI) format. The method further comprises receiving a DCI of the DCI format and determining a size of an antenna port field and a DMRS port table for interpreting a value comprised in the antenna port field based on the DMRS and antenna port field configurations, the determined DMRS port table being a subset of a master DMRS port table. The method further comprises determining a DMRS port(s) used for a corresponding physical channel based on the size of the antenna port field, the DMRS port table, and/or the value of the antenna port field.
    Type: Application
    Filed: October 5, 2020
    Publication date: October 13, 2022
    Inventors: Shiwei Gao, Yufei Blankenship, Sebastian Faxér, Mattias Frenne, Siva Muruganathan
  • Publication number: 20220329399
    Abstract: Embodiments of a method performed by a wireless device are disclosed. In one embodiment, the method comprises providing physical downlink control channel capability information to a base station, where the physical downlink control channel capability information comprises one or more candidate values comprising one or more candidate (X,Y) values or one or more candidate (X, Y, ?) values, where X is a minimum time separation in Orthogonal Frequency Division Multiplexing (OFDM) symbols between the starts of two physical downlink control channel monitoring spans, Y is a maximum length of a physical downlink control channel monitoring span in terms of OFDM symbols, and ? is subcarrier spacing. The method further comprises determining a maximum value. The maximum value is either a maximum number of non-overlapping Control Channel Elements (CCEs) for channel estimation or a maximum number of blind decodes for physical downlink control channel monitoring, per physical downlink control channel monitoring span.
    Type: Application
    Filed: August 4, 2020
    Publication date: October 13, 2022
    Inventors: Kittipong Kittichokechai, Yufei Blankenship, Mattias Andersson
  • Publication number: 20220322362
    Abstract: Systems and methods for multi-Transmission Reception Point (TRP) transmission for downlink Semi-Persistent Scheduling (SPS) are provided. In some embodiments, a method performed by a wireless device for configuring one or more wireless communications settings includes determining multiple wireless communications configurations; and simultaneously activating at least two of the wireless communications configurations such that the at least two of the plurality of wireless communications configurations include configuration of one or more of a low latency and/or reliability scheme and one or more properties related to the low latency and/or reliability scheme. This enables multi-TRP based reliability schemes for the case when multiple downlink SPS configurations can be simultaneously activated.
    Type: Application
    Filed: May 1, 2020
    Publication date: October 6, 2022
    Inventors: Siva Muruganathan, Shiwei Gao, Yufei Blankenship, Mattias Frenne
  • Publication number: 20220321282
    Abstract: A method for use in a transmitter includes sending a transmission comprising a transport block (TB) comprising a plurality of code blocks (CBs) arranged in one or more code block groups (CBGs). Each code block group includes one or more code blocks and each code block includes a plurality of coded bits. The transmission is sent to a receiver configured to use multi-bit hybrid automatic repeat request (HARQ) feedback per transport block. The method further includes receiving HARQ ACK or NACK feedback from the receiver one or more of the one or more code block groups of the transport block. The method further includes determining a number of code blocks or code block groups to send to the receiver in a retransmission based on at least the received HARQ ACK or NACK feedback.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 6, 2022
    Inventors: Jung-Fu Cheng, Mattias Andersson, Yufei Blankenship, Stefan Parkvall, Sara Sandberg
  • Publication number: 20220312437
    Abstract: Systems and methods for scheduling request (SR) prioritization are disclosed herein. In one embodiment, a method performed by a wireless device for prioritized SR transmission comprises transmitting, to a base station, a SR for data generated on a particular logical channel on a Physical Uplink Control Channel (PUCCH) resource in accordance with an associated SR configuration, wherein a SR priority of the SR is indicated by one or more physical layer properties of the PUCCH resource, in accordance with a mapping between the one or more physical layer properties of the PUCCH and the SR priority.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 29, 2022
    Inventors: Ali Behravan, Jonas Fröberg Olsson, Mattias Andersson, Kittipong Kittichokechai, Zhenhua Zou, Yufei Blankenship