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).

  • Method and apparatus for transmitting and receiving control information to randomize inter-cell interference in a mobile communication system
    Patent number: 9246648
    Abstract: Methods and apparatuses are provided for transmitting and receiving information. A User Equipment (UE) receives information for a cyclic shift value and information for an orthogonal sequence transmitted from a Node B. The cyclic shift value is defined per Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbol and the orthogonal sequence is defined per slot. The UE obtains a reference sequence based on the cyclic shift value and the orthogonal sequence. The UE transmits the reference sequence in a SC-FDMA symbol to the Node B. The SC-FDMA symbol is predefined among a plurality of SC-FDMA symbols in a slot of a subframe.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: January 26, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Young-Bum Kim, Joon-Young Cho, Ju-Ho Lee, Ying Yang Li, Yujian Zhang
  • Method and apparatus for transmitting and receiving control information to randomize inter-cell interference in a mobile communication system
    Patent number: 9246647
    Abstract: Methods and apparatuses are provided for transmitting and receiving information. A User Equipment (UE) obtains a sequence based on a Zadoff-Chu sequence and ej?, where a cyclic shift value ? is defined per Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbol. The UE generates a signal by using information and the sequence. The UE transmits the signal in a SC-FDMA symbol to a Node B.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: January 26, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Young-Bum Kim, Joon-Young Cho, Juho Lee, Ying Yang Li, Yujian Zhang
  • NEIGHBOR CELL SYSTEM INFORMATION PROVISIONING
    Publication number: 20160021584
    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: Application
    Filed: May 5, 2015
    Publication date: January 21, 2016
    Inventors: Yujian Zhang, Youn Hyoung Heo, Candy Yiu
  • USER EQUIPMENT AND METHODS FOR HANDOVER ENHANCEMENT USING REFERENCE SIGNAL RECEIVED QUALITY (RSRQ)
    Publication number: 20160014662
    Abstract: Embodiments of user equipment (UE) and method for handover enhancement using reference signal received quality (RSRQ) in a wireless network are generally described herein. In some embodiments, a UE adaptively selects handover initiation parameters based, at least in part, on a velocity of the UE. The UE may determine an RSRQ of a serving cell and an RSRQ of a target cell and may transmit a measurement report to a serving eNB for handover from the serving cell to the target cell when the target cell RSRQ exceeds the serving cell RSRQ in accordance with the selected handover initiation parameters. In some of these embodiments, the handover initiation parameters may include an offset value, such as an A3offset value, and a time-to-trigger (TTT) that comprise an A3offset-TTT pair.
    Type: Application
    Filed: July 15, 2015
    Publication date: January 14, 2016
    Inventors: Candy Yiu, Yujian Zhang, Mo-Han Fong, Yuefeng Peng
  • TECHNIQUES TO FACILITATE DUAL CONNECTIVITY
    Publication number: 20160014836
    Abstract: Examples are disclosed for facilitating dual connectivity for user equipment (UE) in a wireless network. The examples include establishing a backhaul link between base stations serving as primary and secondary cells for separate UE connections to management or gateway entities for the wireless network. The primary base station may provide macro cell coverage for the one or more UEs while the secondary base station may provide small cell coverage. The two base stations may split at least some protocol stack processing for radio bearers associated with the separate UE connections. Control information may be exchanged through the backhaul link to facilitate the split protocol stack processing. Other examples are described and claimed.
    Type: Application
    Filed: December 23, 2013
    Publication date: January 14, 2016
    Applicant: Intel IP College Blvd.
    Inventors: Candy YIU, Ang Lucia A. Pinheiro, Yujian ZHANG
  • FAST RADIO LINK RECOVERY FOR LTE NETWORKS
    Publication number: 20160014646
    Abstract: Embodiments of the present disclosure are directed toward devices and methods for fast radio link recovery in cellular networks. In one embodiment, the signal strength of the serving cell is compared to the signal strength of a target cell, and a radio link failure (RLF) timer is terminated or shortened based on the comparison. Alternatively, a second shorter timer may be used as opposed to modifying the current timer. In some embodiments, the modification of RLF timers may be triggered by the start of a measurement trigger timer. This may allow a user equipment to more quickly establish a connection with a target cell in situations where radio link failure or handover failure are likely to occur. In some instances, the parameters for terminating or shortening the radio link failure timer, or starting an additional timer, may be provided to the user equipment by a network.
    Type: Application
    Filed: March 24, 2014
    Publication date: January 14, 2016
    Inventors: Candy YIU, Yujian ZHANG, Youn Hyoung HEO
  • METHOD AND APPARATUS FOR MULTIMEDIA BROADCAST MULTICAST SERVICE (MBMS) CONTROL INFORMATION DELIVERY
    Publication number: 20160007319
    Abstract: Apparatuses and methods for providing multimedia broadcast multicast service (MBMS) on carriers of a new carrier type (NCT) are described herein. A user equipment (UE) may transmit a message to indicate an interest in receiving MBMS transmissions on a target cell that operates on a first carrier of a first carrier type on which cell-specific reference signals (CRSs) are suppressed at one or more downlink subframes of a downlink frame. The UE may receive, in response to transmitting the message, identification information of a notification cell on which to receive MBMS control information change notification for the target cell. The UE may receive MBMS traffic from the target cell using the MBMS control information received from the notification cell. The UE may receive the MBMS control information on a second carrier of a second carrier type different from the first carrier type.
    Type: Application
    Filed: December 17, 2013
    Publication date: January 7, 2016
    Inventors: Hong He, Yujian Zhang, Seunghee Han, Jong-Kae Fwu, Mo-Han Fong, Kamran Etemad
  • Performing a handover in a heterogeneous wireless network
    Patent number: 9225449
    Abstract: Technology for performing a handover in a heterogeneous wireless network (HetNet) is disclosed. One method comprises receiving, at an anchor serving cell in the HetNet, channel measurement reports made by a user equipment (UE) for a plurality of cells. A transmission point change request can be sent, based on the channel measurements for the UE, from the anchor serving cell to a target transmission point. The target transmission point is located in one of the plurality of cells. A transmission point change indicator is sent from the anchor cell to the UE to indicate a change in TP with which the UE will communicate via an air interface, while maintaining a connection to the anchor serving cell.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: December 29, 2015
    Assignee: INTEL CORPORATION
    Inventors: Youn Hyoung Heo, Mo-Han Fong, Yujian Zhang, Jong-Kae Fwu
  • METHOD, APPARATUS AND SYSTEM FOR MANAGING BEARERS IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20150351139
    Abstract: Embodiments of the present disclosure describe methods, apparatuses, and systems for managing bearers in a wireless communication system. In some embodiments, an apparatus, to be employed by a user equipment (UE), may comprise a communication module to: communicate with a core network on a first bearer through a master evolved Node B (MeNB); receive, from the MeNB, a first message of reconfiguring a radio resource control (RRC) connection to establish a second bearer between the UE and the core network and through a secondary eNB (SeNB); synchronize, in response to the message, with the SeNB in order to establish the second bearer; and communicate with the core network on the second bearer through the SeNB, and continue communicating with the core network on the first bearer through the MeNB.
    Type: Application
    Filed: December 20, 2013
    Publication date: December 3, 2015
    Applicant: INTEL IP CORPORATION
    Inventors: Yujian ZHANG, Ana Lucia A. PINHEIRO, Youn Hyoung HEO, Candy YIU, Mo-Han FONG
  • SYSTEMS AND METHODS FOR IN-DEVICE CO-EXISTENCE INTERFERENCE AVOIDANCE FOR DUAL CONNECTIVITY
    Publication number: 20150327280
    Abstract: Systems and methods disclosed herein provide in-device co-existence interference avoidance for a wireless communication device in dual connectivity with a master node and a secondary node. Time-division multiplexing (TDM) assistance information sent by the wireless communication device is forwarded from the master node to the secondary node. The master node and/or the secondary node uses the TDM assistance information to determine a TDM solution for the in-device co-existence interference in the wireless communication device.
    Type: Application
    Filed: December 24, 2014
    Publication date: November 12, 2015
    Applicant: Intel Corporation
    Inventors: YUJIAN ZHANG, SATISH C. JHA, ALI T. KOC, YOUN HYOUNG HEO, KATHIRAVETPILLAI SIVANESAN, RATH VANNITHAMBY
  • SYSTEMS, DEVICES, AND METHODS FOR ALIGNMENT PROCEDURES IN DUAL-CONNECTIVITY NETWORKS
    Publication number: 20150327322
    Abstract: Embodiments of the present disclosure describe systems, devices, and methods for alignment procedures in dual-connectivity networks. Various embodiments may include determining system frame number and subframe number differences, and aligning discontinuous reception (DRX) or measurement gaps of a secondary cell group with a master cell group. Other embodiments may be described or claimed.
    Type: Application
    Filed: September 9, 2014
    Publication date: November 12, 2015
    Inventors: Rui Huang, Yang Tang, Yujian Zhang, Candy Yiu
  • USER EQUIPMENT AND METHODS FOR MEASUREMENT OF REFERENCE SIGNAL RECEIVED QUALITY
    Publication number: 20150312817
    Abstract: Embodiments of UE and methods for measurement of Reference Signal Received Quality (RSRQ) are generally described herein. The UE may be configured to determine an RSRQ of a serving cell and an RSRQ of a target cell based on an indicated RSRQ measurement type. The measurement type may be received as part of a measurement configuration Information Element (IE) that indicates a first or second RSRQ measurement type. For the first RSRQ measurement type, the RSRQ may be determined based on a Received Signal Strength Indicator (RSSI) over common reference signals (CRS). For the second RSRQ measurement type, the RSRQ may be determined based on an RSSI that is based on a received power of one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols received at the UE.
    Type: Application
    Filed: December 15, 2014
    Publication date: October 29, 2015
    Inventors: Rui Huang, Yang Tang, Yujian Zhang
  • SIMULTANEOUS SCHEDULING REQUEST TRANSMISSION IN DUAL CONNECTIVITY
    Publication number: 20150312930
    Abstract: Briefly, in accordance with one or more embodiments, an apparatus may be configured to receive a first scheduling request transmission for a first cell group, and a second scheduling request transmission for a second cell group, determine one of the first scheduling request and the second scheduling request to have a higher priority and another one of the first scheduling request and the second scheduling request to have a lower priority, and process the scheduling request having a higher priority without processing the scheduling request having a lower priority. An apparatus may be configured to combine a configuration of a first scheduling request for a first cell group and a second configuration of a second scheduling request for a secondary cell group in a system radio bearer, and transmit the SRB to a user equipment to process the first scheduling request and the second scheduling request.
    Type: Application
    Filed: April 27, 2015
    Publication date: October 29, 2015
    Applicant: Intel IP Corporation
    Inventors: Seunghee Han, Yujian Zhang, Hong He
  • USER EQUIPMENT AND METHODS FOR HANDOVER USING MEASUREMENT REPORTING BASED ON MULTIPLE EVENTS
    Publication number: 20150312818
    Abstract: Embodiments of a User Equipment (UE) to support inter-frequency handover are disclosed herein. The UE may receive, from an Evolved Node-B (eNB), a measurement report configuration message that includes multiple measurement events to be determined at the UE. The UE may transmit a measurement report when a combined measurement event occurs. The combined measurement event may include a combination of the multiple measurement events according to a “logical AND” operator such that the combined measurement event occurs when the multiple measurement events occur. The measurement events may be related to signal measurements performed on one or more signals received at the UE from one or more cells configured for operation in the network.
    Type: Application
    Filed: December 22, 2014
    Publication date: October 29, 2015
    Inventors: Candy Yiu, Yujian Zhang, Youn Hyoung Heo, Mo-Han Fong
  • DISCONTINUOUS RECEPTION (DRX) ENHANCEMENTS IN LTE SYSTEMS
    Publication number: 20150305083
    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: September 27, 2013
    Publication date: October 22, 2015
    Applicant: Intel Corporation
    Inventors: Youn Hyoung Heo, Yujian Zhang, Jong-Kae Fwu
  • DELIVERY OF MULTICAST AND BROADCAST SERVICES CONCURRENTLY WITH UNICAST DATA
    Publication number: 20150304917
    Abstract: Briefly, in accordance with one or more embodiments, a user equipment (UE) is configured to inform an evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (EUTRAN) that the UE will receive Multimedia Broadcast Multicast Services (MBMS) services on an MBMS carrier, switch from a primary serving cell to the MBMS carrier to receive MBMS services, and switch back to the primary serving cell after reception of the MBMS services from the MBMS carrier.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Applicant: Intel Corporation
    Inventors: Kamran Etemad, Yujian Zhang
  • User equipment and methods for handover enhancement using scaled time-to-trigger and time-of-stay
    Patent number: 9160515
    Abstract: Embodiments of user equipment (UE) and method for handover enhancement using a scaled time-to-trigger (TTT) and a time-of-stay are generally described herein. In some embodiments, the TTT is scaled based on at least one of a measured reference signal received quality (RSRQ) value of a serving cell and a time-of-stay in the serving cell.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 13, 2015
    Assignee: Intel IP Corporation
    Inventors: Candy Yiu, Yujian Zhang
  • Sounding reference signal (SRS) mechanism for intracell device-to-device (D2D) communication
    Patent number: 9154267
    Abstract: Technology for device discovery using a device-to-device (D2D) sounding reference signal (SRS) and device discovery using D2D SRS in a channel measurement group (CMG) is disclosed. In an example, a user equipment (UE) configured for device discovery via a node using the D2D SRS can include a transceiver module. The transceiver module can send a radio resource control (RRC) device discovery request to a node, scan D2D SRS subframes of proximity UEs using D2D SRS triggering, and send feedback to the node of detected D2D SRS information of the proximity UEs. The proximity UE can be located within a same cell as the UE.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: October 6, 2015
    Assignee: INTEL CORPORATION
    Inventors: Hong He, Seunghee Han, Youn Hyoung Heo, Jong-Kae Fwu, Hyung-Nam Choi, Mo-Han Fong, Yujian Zhang, Umesh Phuyal, Rongzhen Yang, Feng Chen, Hujun Yin, Xiaogang Chen
  • Multicast/broadcast service continuity in multi-carrier networks
    Patent number: 9144085
    Abstract: Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for management and/or support of multimedia broadcast multicast service (MBMS) service in a wireless communications network. An evolved Node B (eNB) may transmit MBMS assistance information to a user equipment (UE). The MBMS assistance information may identify a carrier by which one or more upcoming MBMS services are to be provided and an indicator of a carrier selection mode to be used by the UE. The UE may transmit an MBMS interest indication message including information related to one or more targeted MBMS services which the UE wants to receive.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: September 22, 2015
    Assignee: Intel Corporation
    Inventors: Kamran Etemad, Yujian Zhang
  • SYSTEMS, METHODS, AND DEVICES FOR DEVICE-TO-DEVICE COMMUNICATION MODE SELECTION
    Publication number: 20150264677
    Abstract: A user equipment (UE) includes a transmission mode component, a selection component, and a transmission component. The transmission mode component is configured to selectively allocate resources for device-to-device communication according to a plurality of transmission modes. The plurality of transmission modes include a first transmission mode in which the resources used by the UE are specifically allocated by one of a base station or relay node and a second transmission mode in which the UE selects the resources from a pool of available resources. The selection component is configured to select a selected transmission mode. The transmission component is configured to transmit signals in frequency resources selected according to the selected transmission mode.
    Type: Application
    Filed: December 24, 2014
    Publication date: September 17, 2015
    Applicant: INTEL IP CORPORATION
    Inventors: Hong He, Yujian Zhang, Seunghee Han