Patents by Inventor Aris Papasakellariou

Aris Papasakellariou 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).

  • Patent number: 11706776
    Abstract: Method and apparatus are provided for decoding a downlink control information (DCI) format that schedules a physical uplink shared channel (PUSCH) transmission and includes a field indicating whether or not data information is multiplexed in the PUSCH and for transmitting the PUSCH with or without data information depending on the indication by the field.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: July 18, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Aris Papasakellariou
  • Patent number: 11705944
    Abstract: A method for a user equipment (UE) to receive physical downlink control channels (PDCCHs) is provided. The UE receives configuration information for a first control resource set that includes a number of symbols in a time domain and a number of resource blocks (RBs) in a frequency domain, configuration information indicating a first number of Nbundle,1 frequency contiguous RBs, and a PDCCH in the first control resource set in a number of frequency distributed blocks of Nbundle,1 RBs. The UE assumes that a demodulation reference signal associated with the reception of the PDCCH has a same preceding over the Nbundle,1 RBs. A method for constructing a search space to reduce a number of channel estimations that the UE performs for decoding PDCCHs, relative to conventional search spaces, is also provided.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: July 18, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Aris Papasakellariou
  • Patent number: 11700605
    Abstract: A method of a user equipment (UE) for transmitting acknowledgement information. The method comprises receiving a physical downlink control channel conveying a downlink control information (DCI) format, a physical downlink shared channel conveying one or more data transport blocks scheduled by the DCI format, and configuration information for transmission of a physical uplink control channel (PUCCH) conveying acknowledgement information in response to the reception of the one or more data transport blocks; and transmitting the PUCCH in time-frequency resources within a first slot. An index of the first slot is configured by the DCI format. The time-frequency resources within the first slot are configured by the DCI format through a configuration of an index of a first symbol, a number of consecutive slot symbols, and an index of a first frequency resource block.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: July 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Aris Papasakellariou
  • Publication number: 20230208592
    Abstract: Apparatuses and methods for transmitting or receiving a signal or a channel. A method for operating a user equipment (UE) to receive the signal or the channel includes receiving a configuration for spatial filters, determining first and second spatial filters from the spatial filters, and determining first and second numbers of repetitions. The spatial filters correspond to spatial relations with reference signals (RSs), respectively. The first and second spatial filters are different. The first and second numbers of repetitions are different. The method further includes transmitting the signal or the channel using the first spatial filter for the first number of repetitions and using the second spatial filter for the second number of repetitions. The second number of repetitions is transmitted after the first number of repetitions.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 29, 2023
    Inventors: Ebrahim MolavianJazi, Aris Papasakellariou
  • Patent number: 11689905
    Abstract: A user equipment (UE) and base station (BS) in a wireless communication network. The UE includes a receiver configured to receive at least one semi-persistent scheduling (SPS) configuration among a plurality of SPS configurations from a BS. Each of the SPS configurations configures the UE with a different periodicity of a sidelink transmission to be transmitted to another UE. The UE also includes a transmitter configured to transmit the sidelink transmission in the different periodicity according to the at least one of the plurality of SPS configurations. The BS includes a controller configured to select at least one SPS configuration among a plurality of SPS configurations for a UE. Each of the SPS configurations configures the UE with a different periodicity of a sidelink transmission to be transmitted to another UE. The BS also includes a transmitter configured to transmit the selected at least one SPS configuration to the UE.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: June 27, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sridhar Rajagopal, Aris Papasakellariou, Thomas David Novlan
  • Patent number: 11683806
    Abstract: For multiplexing control information in a physical uplink data channel, a user equipment (UE) includes receiving a configuration for a first set of values and receiving a downlink control information (DCI) format scheduling a transmission of a physical uplink shared data channel (PUSCH) over a set of resource elements (REs) and including a field providing an index. The method further includes determining a first value from the first set of values based on the index, determining a first subset of REs from the set of REs, for multiplexing first uplink control information (UCI), based on the first value, and transmitting the first UCI in the PUSCH.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: June 20, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Aris Papasakellariou
  • Patent number: 11678315
    Abstract: One or more embodiments provide a method implemented in a user equipment (UE) used in a wireless communications system. The method includes transmitting an indication to a base station that the UE is capable of transmitting on a single uplink carrier frequency and downlink carrier aggregation. The method also includes receiving an uplink carrier frequency switching pattern from the base station. The method also includes switching uplink carrier frequencies based on the uplink carrier frequency switching pattern.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: June 13, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Boon Loong Ng, Thomas Novlan, Aris Papasakellariou, Young-Han Nam
  • Publication number: 20230179387
    Abstract: Methods, user equipment (UE), and base stations for reception or transmission of physical downlink control channels (PDCCH) associated with a master node (MN) or with a secondary node (SN) are provided. A method of operating a UE to receive PDCCHs includes receiving an indication for a first number of cells Ncells,MCGcap and for a second number of cells Ncells,SCGcap; and determining a first total number of PDCCH candidates on Ncells,MCGDL,? cells of the MN over a time period according to Ncells,MCGcap and a second total number of PDCCH candidates on Ncells,SCGDL,? cells of the SN over the time period according to Ncells,SCGcap. ? is a subcarrier spacing (SCS) configuration for an active bandwidth part (BWP) on each of the Ncells,MCGDL,? cells or Ncells,SCGDL,? cells.
    Type: Application
    Filed: January 30, 2023
    Publication date: June 8, 2023
    Inventors: Aris Papasakellariou, Qiongjie Lin
  • Patent number: 11671298
    Abstract: Methods and apparatuses for a User Equipment (UE) to receive signaling of UE-common Downlink Control Information (DCI) in a set of Physical Resource Blocks (PRBs) over a Transmission Time Interval (TTI) are provided. The method includes receiving, from a transmission point, a broadcast signal; determining a first set of PRBs for a first PDCCH based on the broadcast signal; determining a second set of PRBs for a second PDCCH based on a higher layer signaling; receiving, from the transmission point, first DCI on a first PDCCH in the first set of PRBs; and receiving, from the transmission point, second DCI on a second PDCCH in the second set of PRBs. A CRC of the first DCI is associated with an SI-RNTI, a CRC of the second DCI is associated with a C-RNTI, an RS is determined based on an identity of the transmission point, in a case that the RS is received in the first set of PRBs, and the RS is determined based on the higher layer signaling, in a case that the RS is received in the second set of PRBs.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: June 6, 2023
    Inventors: Aris Papasakellariou, Hyoung-Ju Ji
  • Patent number: 11659570
    Abstract: Methods and apparatus are described for a User Equipment (UE) with reduced processing capabilities (e.g., Machine Type Communication (MTC) UE) to transmit and receive signaling are provided. The Downlink Control Information (DCI) formats scheduling a transmission of a Physical Uplink Shared CHannel (PUSCH) or a reception of a Physical Downlink Shared CHannel (PDSCH) are designed and have a smaller size than respective DCI formats for conventional UEs. DCI formats scheduling PUSCHs to or PDSCHs for a group of MTC UEs are also designed and can have a same size as DCI formats scheduling PUSCH or PDSCH for an individual MTC UE.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: May 23, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Aris Papasakellariou, Hyoung-Ju Ji, Young-Bum Kim
  • Patent number: 11659600
    Abstract: Methods and apparatuses for random access procedures in a wireless communication system. A method for operating a user equipment (UE) includes receiving a system information block (SIB) in a downlink bandwidth (DL) part (BWP). The DL BWP is linked to a first uplink (UL) BWP. The SIB includes an indication for one or more UL BWPs. The method further includes transmitting a physical random access channel (PRACH) in a second UL BWP from the one or more UL BWPs. The second UL BWP is different than the first UL BWP.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: May 23, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Carmela Cozzo, Aris Papasakellariou
  • Publication number: 20230156710
    Abstract: Methods and apparatus are described for transmitting hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits in a physical uplink shared channel (PUSCH) by a user equipment (UE) in a communication system. A method includes receiving, from a base station, a first configuration of a plurality of cells and a second configuration of at least one offset for HARQ-ACK by higher layer signaling; obtaining HARQ-ACK bits for the plurality of cells, based on an order of cell indexes and a number of transport blocks for each of the plurality of the cells; identifying a number of coded symbols for the obtained HARQ-ACK bits based on a number of the obtained HARQ-ACK bits and an offset for HARQ-ACK corresponding to the obtained HARQ-ACK bits; and transmitting, to the base station, signals for the obtained HARQ-ACK bits on one PUSCH of multiple PUSCHs based on the number of coded symbols.
    Type: Application
    Filed: November 28, 2022
    Publication date: May 18, 2023
    Inventors: Aris Papasakellariou, Young-Bum Kim
  • Publication number: 20230156761
    Abstract: Methods and apparatuses for PDCCH reception and transmission. A method for PDCCH reception includes transmitting a capability for receptions of PDCCHs on a downlink (DL) cell. PDCCH receptions on the DL cell are according to (X1, Y1) or (X2, Y2) when any two PDCCH receptions are within Y1 or Y2 symbols or have first symbols separated by at least X1 or X2 symbols, respectively. The method further includes receiving a configuration of search space sets for PDCCH receptions on the DL cell; determining, based on the configuration of the search space sets, whether PDCCH receptions are according to (X2, Y2); and receiving on the DL cell: a maximum number of MPDCCHmax,X1,? PDCCHs within Y1 symbols when PDCCH receptions are not according to (X2, Y2), and a maximum number of MPDCCHmax,X2,? PDCCHs within Y2 symbols when PDCCH receptions are according to (X2, Y2).
    Type: Application
    Filed: January 12, 2023
    Publication date: May 18, 2023
    Inventor: Aris Papasakellariou
  • Patent number: 11652568
    Abstract: A method for a user equipment (UE) to receive physical downlink control channels (PDCCHs) with a first sub-carrier spacing (SCS) includes receiving a bitmap indicating symbols of a slot that are first symbols of control resource sets (CORESETs) for PDCCH receptions, determining, based on the bitmap, a first number of symbols that is a smallest number of symbols in between a first symbol of PDCCH receptions in first CORESETs and a first symbol of PDCCH receptions in second CORESETs, determining, based on the first number of symbols and the SCS, a first maximum number of non-overlapping control channel elements (CCEs), and receiving the PDCCHs with the first SCS according to the first maximum number of non-overlapping CCEs.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: May 16, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Aris Papasakellariou
  • Patent number: 11646850
    Abstract: Methods and apparatuses are disclosed for providing control and data information in communication systems. A method performed by a user equipment (UE) in a wireless communication system includes identifying first offset information; determining a size of uplink data for the UE; and transmitting, to a base station in the wireless communication system, the uplink data with at least one of acknowledgement/non-acknowledgment (ACK/NACK) information and channel quality indicator (CQI) information on a physical uplink shared channel (PUSCH). A number of ACK/NACK repetition is determined based on the first offset information and the size of the uplink data.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: May 9, 2023
    Inventors: Aris Papasakellariou, Joon-Young Cho
  • Patent number: 11646847
    Abstract: Methods and apparatuses for reduced physical downlink control channel (PDCCH) monitoring in a wireless communication system. A method for operating a user equipment includes receiving a configuration for one or more search space sets. The one or more search space sets provide parameters for one or more candidate PDCCH receptions. The method includes determining a first number of candidate PDCCH receptions for a first number of more than one consecutive slots. A candidate PDCCH reception is over a number of control channel elements (CCEs). The first number of candidate PDCCH receptions over a corresponding number of CCEs does not exceed a capability corresponding to the first number of more than one consecutive slots for a maximum number of candidate PDCCH receptions over a corresponding maximum number of non-overlapped CCEs. The method further includes receiving the first number of candidate PDCCH receptions.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: May 9, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Qiongjie Lin, Aris Papasakellariou
  • Publication number: 20230125571
    Abstract: Apparatuses and methods for physical random access channel (PRACH) preamble transmissions or receptions. A method of a UE includes receiving a physical downlink shared channel (PDSCH) that provides a system information block (SIB). The SIB includes an indication for (i) a first transmission configuration indication (TCI) state that provides a first set of quasi-collocation (QCL) properties and (ii) for a second TCI state that provides a second set of QCL properties. The method further includes transmitting a first PRACH according to the first TCI state and a second PRACH according to the second TCI state.
    Type: Application
    Filed: December 23, 2022
    Publication date: April 27, 2023
    Inventors: Ebrahim MolavianJazi, Aris Papasakellariou
  • Publication number: 20230112965
    Abstract: For scheduling transmissions of data channels, control channels, or random access channels using downlink control information (DCI) formats, a DCI format can configure a transmission of one or multiple data channels over respective one or multiple transmission time intervals. A first DCI format can configure the parameters for a channel transmission and a second DCI format can trigger the channel transmission and indicate respective one or more transmission time intervals.
    Type: Application
    Filed: December 2, 2022
    Publication date: April 13, 2023
    Inventor: Aris Papasakellariou
  • Publication number: 20230102997
    Abstract: Methods and apparatuses for managing dual connectivity. A method for operating a UE includes receiving a configuration for dynamic power sharing (DPS) between transmissions on a master cell group (MCG) and transmissions on a secondary cell group (SCG) and determining a time offset as a function of sub-carrier spacing (SCS) configurations and of configurations for a PUSCH processing capability on the MCG and on the SCG. The method further includes determining a maximum power for a PUSCH transmission on the SCG, at a beginning of the PUSCH transmission on the SCG, when each of the transmissions on the MCG is scheduled by a downlink control information (DCI) format in a PDCCH reception that ends at least the time offset before the beginning of the PUSCH transmission on the SCG.
    Type: Application
    Filed: November 4, 2022
    Publication date: March 30, 2023
    Inventors: Aris Papasakellariou, Jung Hyun Bae
  • Patent number: 11617155
    Abstract: Methods and apparatuses for power saving operations. A method of a UE includes receiving a configuration for a number of RS resource sets, a configuration for a PO over slots in time, an indication for activation or deactivation of one or more RS resources from the number of RS resource sets, and the one or more RS resources from the number of RS resource sets when the indication is for activation. The RS resource sets include a number of RS resources. The number of RS resource sets are associated with respective spatial parameters. The PO includes a number of PDCCH reception occasions. The number of PDCCH reception occasions are associated with respective spatial parameters for PDCCH receptions. The method further includes determining a PDCCH reception occasion from the number of PDCCH reception occasions. The PDCCH reception occasion has a same spatial parameter as a RS resource set from the number of RS resource sets.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: March 28, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Qiongjie Lin, Aris Papasakellariou, Hongbo Si