Patents by Inventor Masato Kitazoe

Masato Kitazoe 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: 11140742
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for cell DTX (Discontinuous Transmission) scheduling. A Base Station (BS) determines an operational schedule for the BS including at least one ON period and at least one OFF period, wherein the BS provides a reduced level of service during the at least one OFF period relative to the at least one ON period. The BS transmits the determined operational schedule. A User Equipment (UE) receives the BS's operational schedule and determines, based on the BS's operational schedule and its own operational schedule also including ON and OFF periods, whether to perform at least one service associated with the BS.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: October 5, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Luis Lopes, Masato Kitazoe
  • Publication number: 20210306918
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect that a timer has expired prior to completing a handover of the UE from a source base station (BS) to a target BS. In some aspects, the UE may selectively declare, based at least in part on detecting that the timer has expired, a radio link failure. Numerous other aspects are provided.
    Type: Application
    Filed: June 4, 2021
    Publication date: September 30, 2021
    Inventors: Prasad Reddy KADIRI, Amer CATOVIC, Umesh PHUYAL, Karthika PALADUGU, Alberto RICO ALVARINO, Masato KITAZOE
  • Patent number: 11128341
    Abstract: Coverage enhancements and coverage mode switching related optimizations are discussed for user equipments (UEs) that may switch between various coverage extension (CE) and non-CE modes of operation. In such enhancements, paging uncertainty and delays may be reduced by sending pages either simultaneously or using historical information over multiple coverage modes available to UEs. Random access procedures may be improved by providing CE mode random access procedures that are available when normal mode random access attempts fail and before declaring radio link failure. Additional aspects include improvements for more advanced UEs to improve coverage within normal mode operations by leveraging techniques used for narrowband CE mode operations, including transmission repetition and gapless transmission scheduling over hopped narrowband frequencies.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 21, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Kapil Bhattad, Hao Xu, Alberto Rico Alvarino, Peter Gaal, Masato Kitazoe, Sharad Sambhwani
  • Publication number: 20210281434
    Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes obtaining a first system information message from a wireless network configured to utilize Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframes and non-MBSFN subframes, determining, based on the first system information message, a first set of valid subframes and a first set of non-MBSFN subframes, obtaining a second system information message from the wireless network based on the first set of valid subframes and the first set of non-MBSFN subframes, and accessing the wireless network based on the first system information message and the second system information message.
    Type: Application
    Filed: May 21, 2021
    Publication date: September 9, 2021
    Inventors: Alberto RICO ALVARINO, Peter GAAL, Masato KITAZOE
  • Patent number: 11109438
    Abstract: In an aspect, while a mobile device is operating in a RRC_Idle State, an RRC_Suspended State, an RLF State and/or an RLF Recovery Procedure State, the mobile device may transmit a connection establishment message to a base station of a plurality of base stations. In an aspect, the connection establishment message includes information that indicates whether the mobile device has information associated with signals transmitted by one or more base stations of the plurality of base stations. The mobile device may initiate transmission of the information associated with the signals to the base station subsequent to establishing a security context for the connection between the mobile device and the base station. In some aspects, the mobile device may scramble the information associated with signals and transmit the information associated with signals to the base station prior to establishing a security context for a connection between the mobile device and the base station.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: August 31, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: Prasad Kadiri, Umesh Phuyal, Masato Kitazoe, Srinivasan Balasubramanian, Arvind Santhanam, Aziz Gholmieh, Arnaud Meylan
  • Patent number: 11102736
    Abstract: Aspects of the present disclosure include methods, apparatuses, and computer readable media for inserting an offset between a channel resource element of a channel resource block and a synchronization resource element of a synchronization signal block, transmitting a bandwidth value of the offset to a user equipment.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 24, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Valentin Alexandru Gheorghiu, Masato Kitazoe, Peter Gaal
  • Patent number: 11082947
    Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to enhanced paging procedures for devices with limited communications resources, such as machine type communication (MTC) devices and enhanced or evolved MTC (eMTC) devices. An example method generally includes determining a set of subframes corresponding to a paging occasion for the UE to receive a paging message from a base station (BS), determining, within the set of subframes, at least one narrowband region for receiving the paging message, and monitoring for the paging message in the at least one narrowband region within the set of subframes.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: August 3, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Madhavan Srinivasan Vajapeyam, Hao Xu, Wanshi Chen, Peter Gaal, Masato Kitazoe, Miguel Griot
  • Patent number: 11071152
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify that a radio resource control connection is to be established for evolved packet system fallback or inter radio access technology fallback from New Radio for a voice call. The UE may determine that an establishment cause received from a network access stratum (NAS) layer does not indicate high priority access. The UE may override the establishment cause such that the establishment cause indicates a mobile originated (MO) voice call based at least in part on determining that the establishment cause received from the NAS layer does not indicate high priority access. The UE may perform an access barring check of an MO voice call based at least in part on overriding the establishment cause such that the establishment cause indicates an MO voice call. Numerous other aspects are provided.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: July 20, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Min Wang, Xipeng Zhu, Masato Kitazoe, Lenaig Genevieve Chaponniere, Zhong Ren, Xinli Song, Tom Chin, Osama Lotfallah
  • Patent number: 11070972
    Abstract: Methods, systems, and devices for wireless communications are described that provide for a user equipment (UE) capability indication that indicates one or more constraints associated with a supported modulation order. In some cases, the UE capability indication may indicate that the UE supports a particular modulation order, but has a capacity constraint such that an associated data rate is limited to a data rate associated with a lower modulation order. In some cases, one or more frequency bands may be mapped to a UE constraint.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: July 20, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Seyedkianoush Hosseini, Masato Kitazoe, Wanshi Chen
  • Patent number: 11064549
    Abstract: Methods, systems, and devices for wireless communications are described that provide for configuration of channel bandwidth that may be specific to a particular user equipment (UE). A UE may be configured with a channel bandwidth that is less than or equal to a channel bandwidth of the serving base station, and may also be different than a channel bandwidth of one or more other UEs that are served by the base station. The base station may signal the UE-specific channel bandwidth in UE-specific signaling, such as UE-specific radio resource control (RRC) signaling.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: July 13, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Pui Lok Ang, Tingfang Ji, John Edward Smee, Masato Kitazoe, Keiichi Kubota, Peter Gaal, Joseph Binamira Soriaga, Hung Dinh Ly, Valentin Alexandru Gheorghiu, Renqiu Wang
  • Patent number: 11044111
    Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes obtaining a first system information message from a wireless network configured to utilize Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframes and non-MBSFN subframes, determining, based on the first system information message, a first set of valid subframes and a first set of non-MBSFN subframes, obtaining a second system information message from the wireless network based on the first set of valid subframes and the first set of non-MBSFN subframes, and accessing the wireless network based on the first system information message and the second system information message.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: June 22, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Alberto Rico Alvarino, Peter Gaal, Masato Kitazoe
  • Patent number: 11032750
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect that a timer has expired prior to completing a handover of the UE from a source base station (BS) to a target BS. In some aspects, the UE may selectively declare, based at least in part on detecting that the timer has expired, a radio link failure. Numerous other aspects are provided.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: June 8, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Prasad Reddy Kadiri, Amer Catovic, Umesh Phuyal, Karthika Paladugu, Alberto Rico Alvarino, Masato Kitazoe
  • Publication number: 20210168586
    Abstract: Techniques for optimizing user equipment radio capability signaling for wireless communications are described. In one technique, a type of network to access for communications is determined. A capability identifier(s) associated with a set(s) of user equipment (UE) radio capabilities is determined based, at least in part, on the type of network. The capability identifier(s) is sent to the network. Upon receiving an indication of the capability identifier(s), the set(s) of UE radio capabilities associated with the capability identifier(s) is identified and stored.
    Type: Application
    Filed: February 10, 2021
    Publication date: June 3, 2021
    Inventors: Gavin Bernard HORN, Haris ZISIMOPOULOS, Masato KITAZOE, Aziz GHOLMIEH, Brian Clarke BANISTER
  • Patent number: 11025401
    Abstract: Certain aspects of the present disclosure relate to techniques for secondary cell (SCell) configuration signaling and activation procedures. For example, certain aspects provide a method for configuring a plurality of secondary cells of a base station for a user equipment. The method includes receiving, at the user equipment from the base station, a message including at least one configuration parameter applicable to the plurality of secondary cells. The method further includes configuring the user equipment for the plurality of secondary cells based on the at least one configuration parameter.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 1, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Prasad Kadiri, Masato Kitazoe, Umesh Phuyal
  • Publication number: 20210153108
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for operating a user equipment (UE) in a next generation (NG) radio access network (RAN) (NG-RAN) to validate a system information block (SIB) for non-public networks (NPNs). In one aspect, a UE receiving a SIB-one (SIB1) from a cell of the NG-RAN may determine whether the cell supports non-public networks (NPNs) based on the received SIB1. If so case, the UE may determine whether an NPN-identifier (NPN-ID) in the received SIB1 matches an NPN-ID of a SIB stored in memory. If so, the UE may validate the stored SIB based at least in part on the received SIB1. If not, the UE may invalidate the stored SIB and obtain a new SIB per standard procedures.
    Type: Application
    Filed: November 3, 2020
    Publication date: May 20, 2021
    Inventors: Vinay JOSEPH, Masato KITAZOE, Rajat PRAKASH
  • Patent number: 11012913
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may provide, to a source base station (BS) and prior to a handover of the UE from the source BS to a target BS, information that identifies a set of transition capabilities of the UE. The UE may receive, from the source BS, a handover command or reconfiguration message after providing the information to the source BS. The UE may communicate, using a subset of the transition capabilities, with the target BS prior to the release. Numerous other aspects are provided.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: May 18, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Karthika Paladugu, Masato Kitazoe, Peter Gaal
  • Patent number: 11012929
    Abstract: Methods, systems, and devices for wireless communication are described that provide for identification, on a per-PLMN basis of a type of core network associated with each PLMN in a list of networks associated with a base station. A user equipment (UE) may receive the list of networks and, based at least in part on the type(s) of core network accessible via each PLMN and a capability of the UE, initiate a connection establishment with a PLMN and associated core network. In some cases, UEs that are not capable of connections with a first type of core network (e.g., a 5G core network) may be restricted from camping on a cell or PLMN that may provide only connections with the first type of core network (e.g., a 4G core network).
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: May 18, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Prasad Reddy Kadiri, Ozcan Ozturk, Gavin Bernard Horn, Masato Kitazoe, Lenaig Genevieve Chaponniere, Haris Zisimopoulos, Stefano Faccin, Hong Cheng, Miguel Griot
  • Publication number: 20210136636
    Abstract: This disclosure provides systems, methods, apparatuses and computer-readable medium for wireless communication. In some aspects, a user equipment (UE) may receive, from a first base station (BS) associated with a fifth generation New Radio (5G NR) radio access technology (RAT), a command of mobility from the 5G NR RAT to a second RAT. The UE may determine that the command of mobility is for voice fallback. The UE may transmit, to a second BS associated with the second RAT and based at least in part on determining that the command of mobility is for voice fallback, a radio resource control (RRC) connection request communication for attempting to communicatively connect with the second BS for voice fallback.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Inventors: Xipeng ZHU, Masato KITAZOE, Gavin Bernard HORN, Shyamal RAMACHANDRAN, Arvind Vardarajan SANTHANAM, Tom CHIN, Min WANG, Kuo-Chun LEE
  • Publication number: 20210126745
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a multicast or broadcast radio bearer (MRB) in a radio link control (RLC) acknowledged mode (AM). The UE may determine an adjustment of an RLC AM transmission window of a base station. The RLC AM transmission window may be associated with retransmission of RLC packets associated with the MRB. The UE may synchronize an RLC AM reception window of the UE with the RLC AM transmission window based at least in part on determining the adjustment of the RLC AM transmission window of the base station. The RLC AM reception window may be associated with reassembly of RLC packets associated with the MRB. Numerous other aspects are provided.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 29, 2021
    Inventors: Prasad Reddy KADIRI, Sitaramanjaneyulu KANAMARLAPUDI, Gavin Bernard HORN, Umesh PHUYAL, Xipeng ZHU, Alberto RICO ALVARINO, Miguel GRIOT, Masato KITAZOE
  • Patent number: 10972947
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a message that indicates a change from an evolved universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA) packet data convergence protocol (PDCP) to a New Radio (NR) PDCP, wherein the message includes an instruction to perform an intra-cell handover; generate one or more security keys based at least in part on receiving the message that includes the instruction to perform the intra-cell handover; and communicate using the one or more security keys after the intra-cell handover is performed. Numerous other aspects are provided.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: April 6, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Arun Prasanth Balasubramanian, Masato Kitazoe, Yu-Ting Yu, Keiichi Kubota