Patents by Inventor Pengkai Zhao
Pengkai Zhao 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).
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Patent number: 11937328Abstract: This disclosure relates to techniques for a wireless device to perform millimeter wavelength communication with increased reliability and power efficiency using sensor inputs. The sensor inputs may include motion, rotation, or temperature measurements, among various possibilities. The sensor inputs may be used when performing beamforming tracking, antenna configuration, transmit and receive chain measurements and selection, and/or in any of various other possible operations.Type: GrantFiled: March 8, 2021Date of Patent: March 19, 2024Assignee: Apple Inc.Inventors: Wei Zhang, Pengkai Zhao, Shiva Krishna Narra, Sriram Subramanian, Madhukar K. Shanbhag, Sanjeevi Balasubramanian, Junsung Lim, Jia Tang, Galib A. Mohiuddin, Yu-Lin Wang, Zhu Ji, Johnson O. Sebeni
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Publication number: 20240090081Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform methods for Fifth Generation New Radio (5G NR) frequency range two (FR2) based communications beam management. The UE may configure, via communications with a base station, serving the UE, a group ID for PUCCH resources within a group of PUCCHs, e.g., for FR2 based communications. The UE may receive, from the base station, an update to one or more PUCCH resources within the group of PUCCHs via a medium access control (MAC) control element (CE) that may include one of a resource ID indicating an update to a PUCCH resource or the group ID to update the group of PUCCH resources. The UE may update, based on the MAC-CE, the one or more PUCCH resources within the group of PUCCHs.Type: ApplicationFiled: November 13, 2023Publication date: March 14, 2024Inventors: Haitong Sun, Dawei Zhang, Hong He, Jia Tang, Pengkai Zhao, Tianyan Pu, Wei Zeng, Wei Zhang, Yuchul Kim, Yushu Zhang
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Publication number: 20240080780Abstract: Apparatuses, systems, and methods for providing maximum transmit power control when utilizing multiple radio access technologies. For example, a wireless communication device comprising two cellular radios may intend to transmit on the first radio, while concurrently transmitting on the second radio. To ensure compliance with a maximum transmit power limitation, the device may determine an allowed transmit power level of the first radio, representing a difference between the maximum transmit power limitation and the current transmit power level being transmitted by the second radio. The device may also determine a threshold power level for a communication by the first radio. If the allowed transmit power level meets the threshold power level, then the device may transmit the first communication having a power level between the threshold power level and the allowed transmit power level. Otherwise, the device may forego transmission of the first communication.Type: ApplicationFiled: September 18, 2023Publication date: March 7, 2024Inventors: Haitong Sun, Johnson O. Sebeni, Zhu Ji, Dawei Zhang, Wei Zhang, Yuchul Kim, Tianyan Pu, Pengkai Zhao, Wei Zeng, Jia Tang, Ping Wang, Wanping Zhang, Yang Li
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Patent number: 11917464Abstract: Apparatuses, systems, and methods for RACH procedures to avoid excessive handover/secondary cell group failures. A base station may declare a handover and/or secondary cell group (SCG) failure and may determine that a failure threshold has been met. The base station may perform a remedial action in response to meeting the failure threshold. The failure threshold may be multi-dimensional, where a first dimension is associated with a number of handover/SCG failures and where a second dimension is associated with a time period in which the number of handover/SCG failures occurred. Further, a third dimension may be associated with a UE mobility state and a fourth dimension may be associated with whether the UE is using FR1 or FR2. The remedial action in response to meeting the failure threshold may include the base station suspending transmission of measurement object configurations for a specified period of time.Type: GrantFiled: May 26, 2021Date of Patent: February 27, 2024Assignee: Apple Inc.Inventors: Muhammad Saad, Syed A Rahim, Sharad Garg, Vijay Venkataraman, Jia Tang, Wenping Lou, Thanigaivelu Elangovan, Pengkai Zhao, Tarakkumar G Dhanani
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Patent number: 11877245Abstract: Apparatuses, systems, and methods to indicate power transmission capability for a wireless device. A wireless device may connect to a base station (BS). The wireless device may transmit information regarding transmit power capability to the BS. The wireless device may indicate support for full power transmit capability for a subset of TPMIs for which it provides full power transmit capability, e.g., in a bitmap. This subset of TPMIs may be less than all of the available TPMIs (i.e., it may be a strict subset of the available TPMIs). Full power transmission capability of these indicated TPMIs may be provided via antenna switching and/or antenna virtualization. The wireless device may perform uplink transmission to the BS according to the transmit power capability indicated in the information. For example, the UE may transmit data using the antenna virtualization related to the subset of the TPMIs.Type: GrantFiled: November 28, 2019Date of Patent: January 16, 2024Assignee: Apple Inc.Inventors: Haitong Sun, Wei Zhang, Tianyan Pu, Pengkai Zhao, Jia Tang, Yushu Zhang, Yuchul Kim, Hong He, Dawei Zhang, Wei Zeng
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Publication number: 20240015736Abstract: The exemplary embodiments relate to determining that code block group (CBG) based transmissions are enabled, transmitting, via an unlicensed spectrum, configured grants comprising one or more CBG based transmissions and one or more transport block (TB) based transmissions and receiving a downlink feedback information (DFI) downlink control information (DCI) format, wherein the DFI DCI format comprises a hybrid automatic repeating request (HARQ) bitmap corresponding to the TB based transmissions and a HARQ bitmap corresponding to the CBG based transmissions. The exemplary embodiments may be implemented in a computer readable storage medium, a user equipment (UE) or an integrated circuit.Type: ApplicationFiled: September 14, 2023Publication date: January 11, 2024Inventors: Hong HE, Chunhai YAO, Chunxuan YE, Dawei ZHANG, Haitong SUN, Pengkai ZHAO, Wei ZENG, Wei ZHANG, Weidong YANG, Yuchul KIM, Yushu ZHANG, Zhibin WU
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Patent number: 11864278Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform methods for Fifth Generation New Radio (5G NR) frequency range two (FR2) based communications beam management. The UE may configure, via communications with a base station, serving the UE, a group ID for PUCCH resources within a group of PUCCHs, e.g., for FR2 based communications. The UE may receive, from the base station, an update to one or more PUCCH resources within the group of PUCCHs via a medium access control (MAC) control element (CE) that may include one of a resource ID indicating an update to a PUCCH resource or the group ID to update the group of PUCCH resources. The UE may update, based on the MAC-CE, the one or more PUCCH resources within the group of PUCCHs.Type: GrantFiled: April 28, 2022Date of Patent: January 2, 2024Assignee: Apple Inc.Inventors: Haitong Sun, Dawei Zhang, Hong He, Jia Tang, Pengkai Zhao, Tianyan Pu, Wei Zeng, Wei Zhang, Yuchul Kim, Yushu Zhang
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Publication number: 20230413087Abstract: A device may wirelessly communicate with a number of different cells used in a carrier aggregation. The device may monitor physical downlink control channels (PDCCHs) on the different cells, dynamically switching between a dormant monitoring state (DS) and an active monitoring state (AS). In the DS, the UE may not monitor any PDCCH candidates on the active secondary SCells corresponding to the DS, or it may monitor PDCCH candidates in the search space (SS) set with the largest monitoring periodicity among the multiple SS sets on the active bandwidth part (BWP). In the AS, the UE may monitor a set of PDCCH candidates in physical resources configured by higher layers on the BWPs. Switching from one monitoring state to another may be facilitated through the use of a new downlink control information (DCI) format without data scheduling, a modified existing DCI format with data scheduling, and/or use of a DS timer.Type: ApplicationFiled: August 28, 2023Publication date: December 21, 2023Inventors: Hong He, Pengkai Zhao, Wei Zeng, Dawei Zhang, Haitong Sun, Yuchul Kim, Chunhai Yao, Yushu Zhang, Wei Zhang, Weidong Yang, Chunxuan Ye
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Publication number: 20230403754Abstract: A user equipment (UE) is configured to establish network connections for long-term evolution (LTE) and new radio (NR) radio access technologies (RATs) in non-standalone (NSA) E-UTRA-NR dual connectivity (ENDC) operation. The UE includes a multi-antenna array for data and signaling transmissions and receptions over the LTE and NR connections. The UE determines a most efficient antenna of the multi-antenna array for an operating frequency band of the LTE and NR connections, wherein the most efficient antenna is determined based on at least one performance factor for the UE when using the antenna compared to other antennas of the multi-antenna array, evaluates one or more factors for determining whether the LTE RAT or the NR RAT is to use the most efficient antenna and transmits uplink data on the most efficient antenna via either the LTE RAT or the NR RAT based on the evaluated factors.Type: ApplicationFiled: August 24, 2023Publication date: December 14, 2023Inventors: Sriram SUBRAMANIAN, Alosious Pradeep PRABHAKAR, Madhukar K. SHANBHAG, Pengkai ZHAO, Sanjeevi BALASUBRAMANIAN, Shiva Krishna NARRA, Vijay VENKATARAMAN, Vishwanth Kamala GOVINDARAJU, Wenping LOU
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Publication number: 20230397024Abstract: A wireless device may comprise antennas and a processor configured to cause the wireless device to determine preferred antenna ports for at least one primary component carriers (PCCs) and at least one secondary component carriers (SCCs) based on performed downlink measurements of antenna ports. The wireless device may further determine support capabilities of the wireless device and perform computations using additional measurements of the antenna ports. Based on the computations, the wireless device may assign the preferred antenna ports to the PCCs and SCCs and perform uplink transmission using the assigned antenna ports.Type: ApplicationFiled: June 1, 2022Publication date: December 7, 2023Inventors: Vijendrakumar K. Ashiwal, Vijay Venkataraman, Tiberiu Muresan, Sharad Garg, Jia Tang, Pengkai Zhao, Zhu Ji, Vijay Gadde, Dikshit Garg, Tarakkumar G. Dhanani
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Patent number: 11817933Abstract: Apparatuses, systems, and methods for a wireless device to perform methods to implement mechanisms for a UE to request a beam quality measurement procedure. A user equipment device may be configured to perform a method including performing transmitting a request to perform a beam quality measurement procedure for downlink receptions (e.g., a P3 procedure) to a base station/network entity, receiving instructions to perform the beam quality measurement procedure from the base station, and transmitting results of the beam quality measurement procedure to the base station. In some embodiments, transmission of the request may be response to at least one trigger condition and/or detection of a condition at the UE. The request may include an indication of a preferred timing offset. The instructions to perform the beam quality measurement procedure may include a schedule for the beam quality measurement.Type: GrantFiled: July 26, 2022Date of Patent: November 14, 2023Assignee: Apple Inc.Inventors: Jia Tang, Beibei Wang, Dawei Zhang, Haitong Sun, Johnson O. Sebeni, Pengkai Zhao, Ping Wang, Wei Zeng, Yang Li, Zhu Ji
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Patent number: 11818803Abstract: Apparatuses, systems, and methods for a wireless device to perform methods to implement mechanisms for performing a listen again after talk procedure to detect collisions over an access medium. The wireless device may determine a frequency and configuration of modified transmission frames for transmission over an access medium (licensed or unlicensed) and may further determine a timing of the modified transmission frames within a transmission occasion. The wireless device may detect, during a listening period of the modified transmission frame, a collision and may adjust, based, at least in part, on the detected collision, a remaining transmission schedule for the transmission schedule and/or LBT parameters.Type: GrantFiled: June 16, 2022Date of Patent: November 14, 2023Assignee: Apple Inc.Inventors: Tianyan Pu, Haitong Sun, Wanping Zhang, Wei Zeng, Pengkai Zhao, Dawei Zhang, Wei Zhang, Ping Wang, Sami M. Almalfouh, Johnson O. Sebeni
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Publication number: 20230345468Abstract: The exemplary embodiments relate to determining that code block group (CBG) based transmissions are enabled, transmitting, via an unlicensed spectrum, configured grants comprising one or more CBG based transmissions and one or more transport block (TB) based transmissions and receiving a downlink feedback information (DFI) downlink control information (DCI) format, wherein the DFI DCI format comprises a hybrid automatic repeating request (HARQ) bitmap corresponding to the TB based transmissions and a HARQ bitmap corresponding to the CBG based transmissions. The exemplary embodiments may be implemented in a computer readable storage medium, a user equipment (UE) or an integrated circuit.Type: ApplicationFiled: April 8, 2020Publication date: October 26, 2023Inventors: Hong HE, Chunhai YAO, Chunxuan YE, Dawei ZHANG, Haitong SUN, Pengkai ZHAO, Wei ZENG, Wei ZHANG, Weidong YANG, Yuchul KIM, Yushu ZHANG, Zhibin WU
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Publication number: 20230309094Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform multiple TTI PUSCH transmissions in a wireless communication system as well as code block groups (CBGs) based retransmissions operations. A UE may perform radio resource control (RRC) signaling with a network entity to configure a data structure that may include one or more sets of physical uplink shared channel (PUSCH) transmission configurations, where each set of PUSCH transmission configurations span multiple TTIs. The wireless device may be configured to receive, from the network entity, a downlink control information (DCI) message that may include a time domain resource assignment field (TDRA) that may indicate a set of PUSCH transmission configurations included in the data structure. The wireless device may perform PUSCH transmissions spanning multiple TTIs according to the indicated set of PUSCH transmission configurations over an unlicensed band.Type: ApplicationFiled: May 19, 2023Publication date: September 28, 2023Inventors: Hong He, Dawei Zhang, Haitong Sun, Jia Tang, Pengkai Zhao, Wei Zeng, Wei Zhang, Yuchul Kim
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Patent number: 11765668Abstract: Apparatuses, systems, and methods for providing maximum transmit power control when utilizing multiple radio access technologies. For example, a wireless communication device comprising two cellular radios may intend to transmit on the first radio, while concurrently transmitting on the second radio. To ensure compliance with a maximum transmit power limitation, the device may determine an allowed transmit power level of the first radio, representing a difference between the maximum transmit power limitation and the current transmit power level being transmitted by the second radio. The device may also determine a threshold power level for a communication by the first radio. If the allowed transmit power level meets the threshold power level, then the device may transmit the first communication having a power level between the threshold power level and the allowed transmit power level. Otherwise, the device may forego transmission of the first communication.Type: GrantFiled: September 23, 2019Date of Patent: September 19, 2023Assignee: Apple Inc.Inventors: Haitong Sun, Johnson O. Sebeni, Zhu Ji, Dawei Zhang, Wei Zhang, Yuchul Kim, Tianyan Pu, Pengkai Zhao, Wei Zeng, Jia Tang, Ping Wang, Wanping Zhang, Yang Li
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Publication number: 20230292324Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to group transmissions into one or more groups, e.g., of various priority levels and/or types of transmissions. The UE may resolve collisions, e.g., according to one or more procedures described herein. The UE may transmit the transmissions according to the resolutions.Type: ApplicationFiled: May 17, 2023Publication date: September 14, 2023Inventors: Hong He, Dawei Zhang, Haitong Sun, Jia Tang, Pengkai Zhao, Wei Zeng, Wei Zhang, Yuchul Kim
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Patent number: 11758602Abstract: A user equipment (UE) is configured to establish network connections for long-term evolution (LTE) and new radio (NR) radio access technologies (RATS) in non-standalone (NSA) E-UTRA-NR dual connectivity (ENDC) operation. The UE includes a multi-antenna array for data and signaling transmissions and receptions over the LTE and NR connections. The UE determines a most efficient antenna of the multi-antenna array for an operating frequency band of the LTE and NR connections, wherein the most efficient antenna is determined based on at least one performance factor for the UE when using the antenna compared to other antennas of the multi-antenna array, evaluates one or more factors for determining whether the LTE RAT or the NR RAT is to use the most efficient antenna and transmits uplink data on the most efficient antenna via either the LTE RAT or the NR RAT based on the evaluated factors.Type: GrantFiled: June 21, 2021Date of Patent: September 12, 2023Assignee: Apple Inc.Inventors: Sriram Subramanian, Alosious Pradeep Prabhakar, Madhukar K. Shanbhag, Pengkai Zhao, Sanjeevi Balasubramanian, Shiva Krishna Narra, Vijay Venkataraman, Vishwanth Kamala Govindaraju, Wenping Lou
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Patent number: 11743749Abstract: A device may wirelessly communicate with a number of different cells used in a carrier aggregation. The device may monitor physical downlink control channels (PDCCHs) on the different cells, dynamically switching between a dormant monitoring state (DS) and an active monitoring state (AS). In the DS, the UE may not monitor any PDCCH candidates on the active secondary SCells corresponding to the DS, or it may monitor PDCCH candidates in the search space (SS) set with the largest monitoring periodicity among the multiple SS sets on the active bandwidth part (BWP). In the AS, the UE may monitor a set of PDCCH candidates in physical resources configured by higher layers on the BWPs. Switching from one monitoring state to another may be facilitated through the use of a new downlink control information (DCI) format without data scheduling, a modified existing DCI format with data scheduling, and/or use of a DS timer.Type: GrantFiled: November 28, 2019Date of Patent: August 29, 2023Assignee: Apple Inc.Inventors: Hong He, Pengkai Zhao, Wei Zeng, Dawei Zhang, Haitong Sun, Yuchul Kim, Chunhai Yao, Yushu Zhang, Wei Zhang, Weidong Yang, Chunxuan Ye
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Publication number: 20230246673Abstract: In an example method, a user equipment (UE) device determines one or more component carriers available to the UE device for at least one of transmitting or receiving data over a wireless network. The UE device transmits, to the wireless network, for each component carrier, an indication whether the component carrier supports at least one of transmitting or receiving data according to a multi-transmission and receiving points (multi-TRP) communication protocol.Type: ApplicationFiled: April 4, 2023Publication date: August 3, 2023Inventors: Yushu Zhang, Haitong Sun, Wei Zeng, Dawei Zhang, Yuchul Kim, Hong He, Weidong Yang, Chunxuan Ye, Chunhai Yao, Oghenekome Oteri, Wei Zhang, Jia Tang, Tianyan Pu, Pengkai Zhao
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Patent number: 11716122Abstract: Various systems and methods disclosed herein describe improvements for beam management that leverage virtualization across a vertical polarization (V-Pol) and horizontal polarization (H-Pol). One or more of a user equipment (UE) and a base station may include an antenna array comprising V-Pol antenna elements and H-Pol antenna elements. The UE may determine a number of receive (Rx) beam of an Rx beam sweep are needed, signal this number to the base station, and perform the beam sweep according to one or both of the V-Pol and H-Pol. A UE may use group based beam reporting to indicate to the base station a transmit (Tx) beam upon which downlink MIMO using V-Pol and H-Pol may be supported by reporting a same transmission configuration indication (TCI) corresponding to the Tx beam for both a first Rx beam and a second Rx beam in a group based beam reporting message.Type: GrantFiled: April 15, 2021Date of Patent: August 1, 2023Assignee: APPLE INC.Inventors: Haitong Sun, Chunhai Yao, Chunxuan Ye, Dawei Zhang, Hong He, Oghenekome Oteri, Pengkai Zhao, Sigen Ye, Wei Zeng, Weidong Yang, Wen Zhao, Yushu Zhang