Patents by Inventor Yujian Zhang

Yujian Zhang 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: 10237911
    Abstract: In embodiments, apparatuses, methods, and storage media may be described for identifying, by a master evolved NodeB (MeNB), one or more packet data convergence protocol (PDCP) packets that were previously scheduled to be transmitted to a user equipment (UE) by a secondary eNB (SeNB). The PDCP packets that are identified by the MeNB may then be transmitted, or retransmitted, to the UE. Additionally, embodiments may include apparatuses, methods, and storage media for allowing the UE to identify one or more parameters related to a PDCP reordering process to be performed by the UE. Other embodiments may be claimed.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: March 19, 2019
    Assignee: Intel IP Corporation
    Inventors: Yujian Zhang, Candy Yiu, Youn Hyoung Heo, Ana Lucia Pinheiro
  • Publication number: 20190075498
    Abstract: User equipment (UE) handover (HO) techniques for reducing or eliminating interruption time during an HO process are described. In one embodiment, for example, an apparatus may include at least one memory and logic for an evolved node B (eNB), at least a portion of the logic comprised in hardware coupled to the at least one memory. The logic may be operative to forward downlink (DL) data received from a serving gateway (SGW) to user equipment (UE), transmit a handover command to the UE to trigger execution of a handover (HO) process to handover the UE to a target eNB, continue forwarding at least a portion of the DL data to the UE following transmission of the handover command, and terminate transmission of the DL data to the UE responsive to detecting a stop DL data event. Other embodiments are described and claimed.
    Type: Application
    Filed: September 30, 2016
    Publication date: March 7, 2019
    Applicant: INTEL IP CORPORATION
    Inventors: CANDY YIU, YUJIAN ZHANG, YOUN HYOUNG HEO, SUDEEP PALAT, MO-HAN FONG
  • Patent number: 10225880
    Abstract: Discontinuous reception (DRX) alignment techniques for dual-connectivity architectures are described. In one embodiment, for example, user equipment (UE) may comprise one or more radio frequency (RF) transceivers, one or more RF antennas, and logic, at least a portion of which is in hardware, the logic to receive a radio resource control (RRC) configuration information message containing a small cell RRC configuration information element (IE), the small cell RRC configuration IE to contain a small cell discontinuous reception (DRX) configuration IE comprising one or more inter-cell-coordinated small cell DRX parameters, the logic to determine a start time for a small cell DRX cycle based on at least one of the one or more inter-cell-coordinated small cell DRX parameters and initiate the small cell DRX cycle at the determined start time. Other embodiments are described and claimed.
    Type: Grant
    Filed: December 31, 2016
    Date of Patent: March 5, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Ali T. Koc, Satish C. Jha, Kathiravetpillai Sivanesan, Rath Vannithamby, Yujian Zhang
  • Patent number: 10219190
    Abstract: Embodiments of the present disclosure describe methods, systems, and devices for facilitating transfer of user equipment (UE) handover in multi-cell networks. A source evolved node B (eNB) may transmit an autonomous handover grant to a UE along with an indication of a target eNB. The source eNB may also make a handover request to the target eNB and provide a UE context to the target eNB. Upon transmission of a handover command, the UE may perform a random access channel procedure to connect to the target eNB. Because the eNB may have the UE context (or may be able to fetch the context), the handover time may be lessened. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: February 26, 2019
    Assignee: Intel IP Corporation
    Inventors: Candy Yiu, Yujian Zhang, Mo-han Fong, Youn Hyoung Heo
  • Patent number: 10219228
    Abstract: Systems, apparatus, user equipment (UE), evolved node B (eNB), and methods are described for generating an extended power headroom report (ePHR) based on an uncertainty associated with a physical downlink control channel communication granting an uplink grant for a physical uplink shared channel communication when the system is configured for simultaneous physical uplink shared channel and physical uplink control channel communications. Some embodiments are structured to generate the ePHR using a type 2 report regardless of the uncertainty associated with the ePHR, while other embodiments generate the ePHR using a reference format. In some embodiments, a UE communicates a timing field with a UE capability communication indicating whether the UE meets timing requirements to avoid uncertainty in ePHR communications.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: February 26, 2019
    Assignee: Intel IP Corporation
    Inventors: Narayan Vishwanathan, Yujian Zhang, Hong He, Seunghee Han, Youn Hyoung Heo
  • Publication number: 20190052317
    Abstract: Technology for a user equipment (UE) operable to communicate with an one or more extended transmission reception points (TRPs) is disclosed. The UE can signal a transceiver of the UE to simultaneously broadcast two or more transmission beams to establish a connection with one or more of an extended eNodeB or one or more extended transmission reception points (TRP), wherein each extended TRP is connected to the UE via an extended interface with the extended eNodeB. The UE can decode, at the UE, higher layer signaling received from the one or more extended TRPs to form beam association, beam addition, beam release, beam change, or a combination thereof between the UE and the one or more extended TRPs.
    Type: Application
    Filed: December 28, 2016
    Publication date: February 14, 2019
    Inventors: Candy Yiu, Yuan Zhu, Yujian Zhang, Yushu Zhang, Wenting Chang
  • Publication number: 20190045491
    Abstract: 5G methods and architectures to determine active SCells and their bandwidth parts (BWP) used in carrier aggregation (CA) are disclosed in which activating a BWP for an active SCell is performed initially according to a default value provided in initial radio resource control (RRC) messaging. After initialization, SCells and the SCell BWPs used by the user equipment (UE) are activated by RRC messaging, downlink control information (DCI) or dedicated medium access control (MAC) control elements (MAC CEs) with the initial BWP used for an activated SCell being a default value provided during initialization.
    Type: Application
    Filed: September 26, 2018
    Publication date: February 7, 2019
    Inventors: Yujian Zhang, Jeongho Jeon, Youn Hyoung Heo, Candy Yiu, Bharat Shrestha
  • Publication number: 20190044689
    Abstract: An apparatus is configured to be employed within a base station. The apparatus comprises baseband circuitry and/or application circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to generate a bandwidth part (BWP) configuration for a user equipment (UE) device, where the BWP configuration includes an initial BWP for the UE device; and provide the BWP configuration to the UE device using the RF interface.
    Type: Application
    Filed: September 28, 2018
    Publication date: February 7, 2019
    Inventors: Candy Yiu, Youn Hyoung Heo, Jeongho Jeon, Jie Cui, Richard Burbidge, Yujian Zhang, Yang Tang
  • Patent number: 10149259
    Abstract: Embodiments described herein relate generally to a communication between a user equipment (“UE”) and a plurality of evolved Node Bs (“eNBs”). A UE may be adapted to operate in a dual connected mode on respective wireless cells provided by first and second eNBs. The UE may be adapted to estimate respective power headroom (“PHR”) values associated with simultaneous operation on the first and second wireless cells. The UE may cause the first and second PHR estimates to be transmitted to both the first and second eNBs. The first and second eNBs may use these estimates to compute respective uplink transmission powers for the UE. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: December 4, 2018
    Assignee: Intel IP Corporation
    Inventors: Kathiravetpillai Sivanesan, Ali T. Koc, Satish C. Jha, Rath Vannithamby, Yujian Zhang
  • Publication number: 20180317237
    Abstract: Embodiments of a User Equipment (UE) to support dual-connectivity with a Master Evolved Node-B (MeNB) and a Secondary eNB (SeNB) are disclosed herein. The UE may receive downlink traffic packets from the MeNB and from the SeNB as part of a split data radio bearer (DRB). At least a portion of control functionality for the split DRB may be performed at each of the MeNB and the SeNB. The UE may receive an uplink eNB indicator for an uplink eNB to which the UE is to transmit uplink traffic packets as part of the split DRB. Based at least partly on the uplink eNB indicator, the UE may transmit uplink traffic packets to the uplink eNB as part of the split DRB. The uplink eNB may be selected from a group that includes the MeNB and the SeNB.
    Type: Application
    Filed: May 31, 2018
    Publication date: November 1, 2018
    Inventors: Yujian Zhang, Youn Hyoung Heo
  • Publication number: 20180302834
    Abstract: User equipment (UE), an enhanced NodeB (eNB) and method of reducing handover latency are generally described. The UE may transmit measurement feedback to the eNB based on control signals. The UE may receive a reconfiguration message from the eNB or another eNB to the UE is attached. The reconfiguration message may contain reconfiguration information indicating whether or not a physical layer or layer 2 of the UE is to be reconfigured and/or a security key is to be updated. The reconfiguration information may be dependent on whether the handover is between eNBs controlled by a same entity and/or whether the handover comprises an intra-frequency transition. The UE or eNB may initiate handover of the UE. During handover the UE may avoid physical layer or layer 2 reconfiguration or the security key update. The security key and data for the UE may be provided directly between the eNBs.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 18, 2018
    Inventors: Yujian Zhang, Mo-Han Fong, Pingping Zong, Alexei Vladimirovich Davydov
  • Publication number: 20180302820
    Abstract: Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.
    Type: Application
    Filed: June 22, 2018
    Publication date: October 18, 2018
    Applicant: Intel Corporation
    Inventors: Youn Hyoung Heo, Yujian Zhang, Jong-Kae Fwu
  • Publication number: 20180288778
    Abstract: Embodiments of an evolved Node B (eNB) and methods for radio link failure handling for dual connectivity are generally described herein. A method performed by circuitry of a User Equipment (UE) may include connecting at a UE, to a Master eNB (M eNB) and connecting to a Secondary eNB (SeNB). The method may include determining at the UE, that one of the connections has a Radio Link Failure and determining at the UE, that the other of the connections remains connected to the UE. The method may include refraining from initiating a Radio Resource Control (RRC) re-establishment procedure while at least one of the connections does not have a radio link failure.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 4, 2018
    Inventors: Youn Hyoung Heo, Yujian Zhang
  • Publication number: 20180288683
    Abstract: A method for low overhead system information acquisition (LOSIA) is disclosed. The LOSIA method includes several techniques for transmitting common channels in a next generation Radio Access Technology (xRAT). Instead of transmitting system information in a periodic, static, cell-specific, wideband manner, the transmission is triggered by user equipment in an “on demand” manner. The LOSIA method allows the network to control the overhead, bandwidth, and periodicity, as well as other characteristics. The LOSIA method employs several different techniques to trigger the information upon which the network can act, for example, by transmitting different payloads depending on the received trigger.
    Type: Application
    Filed: December 24, 2015
    Publication date: October 4, 2018
    Applicant: INTEL IP CORPORATION
    Inventors: Ralf Bendlin, Gang Xiong, Jong-Kae Fwu, Yujian Zhang
  • Patent number: 10091818
    Abstract: A signal structure for use in D2D communications is described. In one embodiment, a preamble for automatic gain control at the receiver end is included in the transmitted signal. Techniques for scheduling of D2D transmissions using carrier sensing multiple access (CSMA) and a power control schemes for interference management are also described.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 2, 2018
    Assignee: Intel Corporation
    Inventors: Qinghua Li, Honggang Li, Huaning Niu, Yi Hsuan, Yuan Zhu, Xiaogang Chen, Jong-Kae Fwu, Alexei Vladimirovich Davydov, Hujun Yin, Xintian E. Lin, Wendy C. Wong, Yujian Zhang, Apostolos Papathanassiou
  • Patent number: 10080153
    Abstract: User Equipment (UE), computer readable media, and methods to modify communication channel measurement timing based on a mobility of the UE are disclosed. The UE may include circuitry configured to determine a plurality of signals from one or more cells, determine a first value for a first performance metric associated with a first cell of the one or more cells, wherein the first value is determined from a first measurement, select the first cell for a first communication based on the first value, determine first location information associated with the UE, determine, following the first measurement and using the first location information, that the UE is stationary, and delay, in response to the determination that the UE is stationary, a second measurement of the first performance metric. In various alternate embodiments, different measurement types may be used for mobility and channel quality determinations. In further embodiments, only measurements for unused channels may be delayed.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: September 18, 2018
    Assignee: Intel IP Corporation
    Inventors: Candy Yiu, Yang Tang, Rui Huang, Yujian Zhang
  • Patent number: 10075988
    Abstract: Discontinuous reception (DRX) alignment techniques for dual-connectivity architectures are described. In one embodiment, for example, user equipment (UE) may comprise one or more radio frequency (RF) transceivers, one or more RF antennas, and logic, at least a portion of which is in hardware, the logic to receive a radio resource control (RRC) configuration information message containing a small cell RRC configuration information element (IE), the small cell RRC configuration IE to contain a small cell discontinuous reception (DRX) configuration IE comprising one or more inter-cell-coordinated small cell DRX parameters, the logic to determine a start time for a small cell DRX cycle based on at least one of the one or more inter-cell-coordinated small cell DRX parameters and initiate the small cell DRX cycle at the determined start time. Other embodiments are described and claimed.
    Type: Grant
    Filed: December 27, 2014
    Date of Patent: September 11, 2018
    Assignee: INTEL IP CORPORATION
    Inventors: Ali T. Koc, Satish C. Jha, Kathiravetpillai Sivanesan, Rath Vannithamby, Yujian Zhang
  • Patent number: 10070364
    Abstract: Embodiments of the present disclosure describe systems, devices and methods for system information acquisition in radio resource connection (RRC) connection reestablishment when Radio Link Failure (RLF) happens. Various embodiments may include a serving cell that provides system information of a neighbor cell to a user equipment (UE). When the UE detects an RLF event, the UE may determine whether the previously received system information is valid and proceed with RRC connection reestablishment based on the determination. Other embodiments may be described or claimed.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 4, 2018
    Assignee: Intel IP Corporation
    Inventors: Yujian Zhang, Youn Hyoung Heo, Candy Yiu
  • Patent number: 10070383
    Abstract: A system and method for using carrier aggregation and enhanced inter-cell interference coordination in carrier scheduling is disclosed. The method comprises scheduling a communication of control channel information from at least one low power node on a physical downlink control channel (PDCCH) over at least one of a first low power component carrier and a second low power component carrier. A sub-frame having a lowest level of interference caused by a corresponding macro component carrier is identified at each corresponding subframe of the component carriers. The identified sub-frame is selected to transmit the control channel information on the PDCCH from the at least one low power node to a mobile wireless device.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: September 4, 2018
    Assignee: INTEL CORPORATION
    Inventors: Jong-Kae Fwu, Huaning Niu, Yujian Zhang, Yuan Zhu
  • Publication number: 20180242389
    Abstract: An apparatus configured to be employed within an evolved Node B (eNodeB) or within a User Equipment (UE) is disclosed. The apparatus includes control circuitry. The control circuitry is configured to configure a semi-persistent scheduling (SPS) configuration that accommodates short subframes. The short subframes have a transmit time interval (TTI) of less than duration of 1 legacy subframe (e.g., 1 ms). The SPS configuration is provided within a radio resource control (RRC) signaling.
    Type: Application
    Filed: June 24, 2016
    Publication date: August 23, 2018
    Inventors: Umesh Phuyal, Youn Hyoung Heo, Yujian Zhang, Mo-Han Fong