Patents by Inventor Yuanrong LAN

Yuanrong LAN 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: 9538522
    Abstract: A method for transmitting uplink response signals, base station, mobile station and communication system, includes judging whether to use a downlink secondary component carrier to transmit data to a mobile station; if the judging result is positive, allocating resources according to the number of transmission blocks for transmitting the downlink data in the secondary component carrier, accordingly the mobile station is able to use the resources corresponding to a preconfigured primary component carrier and the resources allocated to the secondary component carrier to select uplink resources for transmitting response signals.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: January 3, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yuantao Zhang, Yi Zhang, Yuanrong Lan, Hua Zhou, Jianming Wu
  • Publication number: 20160374082
    Abstract: A signalling method is disclosed for use in an advanced wireless communication network that supports FDD-TDD carrier aggregation (CA). The signalling method comprises configuring the UE (by establishing radio resource control (RRC) connection with the network through the first access node) for data transmission between the UE and the network through the first access node on the first duplex mode carrier as a primary component carrier (PCell), configuring the UE (via dedicated RRC signalling on the PCell) for data transmission between the UE and the network through the second access node on the second duplex mode carrier as a secondary component carrier (SCell), and performing scheduling for data transmission on the aggregated SCell using either self-scheduling or cross-carrier scheduling.
    Type: Application
    Filed: September 12, 2014
    Publication date: December 22, 2016
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20160316457
    Abstract: There is provided a signalling method for use in an advanced wireless communication network (100) that supports a first duplex mode, a second duplex mode different to the first duplex mode, and carrier aggregation of the first second duplex modes. This method includes configuring a UE (104-106) for data communication with the network (100) through a first access node (101) as a PCell, on the first duplex mode and with a first transmission mode (TM) including one or more transport blocks (TBs). This method also includes configuring the UE (104-106) for data communication with the network (100) through a second access node (103) as a SCell, on the second duplex mode and with a second TM including one or more TBs. The second TM associated with the second access node (103) is configured independently of the first TM associated with the first access node (101).
    Type: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Applicant: NEC Corporation
    Inventors: Yuanrong LAN, Kevin LIN, Phong NGUYEN
  • Patent number: 9425931
    Abstract: A method for uplink control signaling in CoMP operation is described. The method includes allocating a first set of CCEs for an associated transmission from an AP to an associated UE. The method also includes transmitting, to a RRH, a message including an indication of the first set of CCEs. The message including the indication of a first set of CCEs is received at the RRH. The method also includes allocating, by the RRH, a second set of CCEs for an associated transmission from the RIM to an associated UE. A UE receives the transmission of downlink control information beginning at a first CCE. The method includes receiving a PUCCH resource offset parameter, the PUCCH resource offset parameter indicating the reception point for the UE. The UE determines an uplink control channel resource based on the first CCE and the PUCCH resource offset parameter.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: August 23, 2016
    Assignee: Nokia Technologies Oy
    Inventors: Yuanrong Lan, Jianchi Zhu, Haipeng Lei, Kodo Shu
  • Publication number: 20160205680
    Abstract: According to an exemplary embodiment, a communications node for use in a communications system wherein the communications node is adapted to: transmit to user equipments (UEs) within a node coverage area a first uplink-downlink configuration within a first time interval; and transmit to selected user equipments (UEs) within the node coverage area secondary uplink-downlink configurations over a plurality of secondary time intervals within the first time interval, wherein the secondary uplink-downlink configurations contain information on reconfigurable subframes within the first uplink-downlink configuration which can be reconfigured by the communications node for use by one or more of the selected UEs.
    Type: Application
    Filed: August 30, 2013
    Publication date: July 14, 2016
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Patent number: 9351287
    Abstract: A method includes receiving downlink data transmitted by a base station via a primary and secondary component carrier in a predetermined order; detecting the received downlink data to obtain indication information on correctly receiving and wrongly receiving the downlink data, or no control information received, allocating corresponding uplink resources according to the primary and secondary component carrier where the detected downlink data is present; arranging the indication information obtained through detecting according to the order of transmitting the downlink data by the base station to obtain an indication information sequence; generating an uplink response signal and determining the uplink resources used to feed back the uplink response signal; transmitting the uplink response signal to the base station using the determined uplink resources, so the base station determines the downlink data retransmitted according to the uplink response signal fed back in the uplink resources, enabling the BS avoid u
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: May 24, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yuanrong Lan, Yuantao Zhang, Hua Zhou, Jianming Wu
  • Publication number: 20160081066
    Abstract: A method for transmitting uplink response signals, base station, mobile station and communication system, includes judging whether to use a downlink secondary component carrier to transmit data to a mobile station; if the judging result is positive, allocating resources according to the number of transmission blocks for transmitting the downlink data in the secondary component carrier, accordingly the mobile station is able to use the resources corresponding to a preconfigured primary component carrier and the resources allocated to the secondary component carrier to select uplink resources for transmitting response signals.
    Type: Application
    Filed: November 16, 2015
    Publication date: March 17, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Yuantao ZHANG, Yi ZHANG, Yuanrong LAN, Hua ZHOU, Jianming WU
  • Publication number: 20160007360
    Abstract: A method is disclosed for PHICH resource allocation in a wireless communication system that supports flexible TDD UL-DL configuration and in which different TDD UL-DL configurations are available and the TDD UL-DL configuration used by first UEs which operate according to the flexible TDD configuration can be different to the TDD UL-DL configuration used by second UEs which operate according to a long term TDD UL-DL configuration. The method comprising allocating a PHICH resource for both first UEs and second UEs according to LTE timing rules applicable to the TDD UL-DL configuration in use by second UEs.
    Type: Application
    Filed: February 28, 2014
    Publication date: January 7, 2016
    Applicant: NEC Corporation
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Patent number: 9232508
    Abstract: A method for transmitting uplink response signals, base station, mobile station and communication system, includes judging whether to use a downlink secondary component carrier to transmit data to a mobile station; if the judging result is positive, allocating resources according to the number of transmission blocks for transmitting the downlink data in the secondary component carrier, accordingly the mobile station is able to use the resources corresponding to a preconfigured primary component carrier and the resources allocated to the secondary component carrier to select uplink resources for transmitting response signals.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: January 5, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yuantao Zhang, Yi Zhang, Yuanrong Lan, Hua Zhou, Jianming Wu
  • Publication number: 20150365207
    Abstract: A method for uplink control signaling in CoMP operation is described. The method includes allocating a first set of CCEs for an associated transmission from an AP to an associated UE. The method also includes transmitting, to a RRH, a message including an indication of the first set of CCEs. The message including the indication of a first set of CCEs is received at the RRH. The method also includes allocating, by the RRH, a second set of CCEs for an associated transmission from the RIM to an associated UE. A UE receives the transmission of downlink control information beginning at a first CCE. The method includes receiving a PUCCH resource offset parameter, the PUCCH resource offset parameter indicating the reception point for the UE. The UE determines an uplink control channel resource based on the first CCE and the PUCCH resource offset parameter.
    Type: Application
    Filed: March 2, 2012
    Publication date: December 17, 2015
    Inventors: Yuanrong Lan, Jianchi Zhu, Haipeng Lei, Kodo Shu
  • Publication number: 20150312936
    Abstract: According to an exemplary embodiment, a control signalling method in a wireless communications system for reducing false positives, the method comprising: lengthening cyclic redundancy check (CRC) information by assigning at least one predetermined value to at least one downlink control information (DCI) field. As a result, it is possible to reduce the probability of false positive.
    Type: Application
    Filed: August 30, 2013
    Publication date: October 29, 2015
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150305000
    Abstract: A signalling method is disclosed for use in an advanced wireless communication network that supports FDD-TDD carrier aggregation (CA). The signalling method comprises configuring the UE (by establishing radio resource control (RRC) connection with the network through the first access node) for data transmission between the UE and the network through the first access node on the first duplex mode carrier as a primary component carrier (PCell), configuring the UE (via dedicated RRC signalling on the PCell) for data transmission between the UE and the network through the second access node on the second duplex mode carrier as a secondary component carrier (SCell), and performing scheduling for data transmission on the aggregated SCell using either self-scheduling or cross-carrier scheduling.
    Type: Application
    Filed: June 26, 2015
    Publication date: October 22, 2015
    Applicant: NEC Corporation
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150296497
    Abstract: A method according to the present invention is implemented in a base station used in a wireless communications system that supports flexible-TDD (flexible-time division duplex) UL-DL (uplink-downlink) configuration. The method includes configuring a first type of user equipment (UE) with a first type of configuration; configuring a second type of UE with a second type of configuration; and receiving from a user equipment a HARQ-ACK (hybrid automatic repeat request-acknowledgement) signal according to a DL association set. The DL association set includes: a first DL association set for a UL-DL TDD configuration used by the first type of UE; and a second DL association set for a reference UL-DL TDD configuration including a third DL association set for PUCCH resource mapping used by the second type of UE.
    Type: Application
    Filed: June 24, 2015
    Publication date: October 15, 2015
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150263829
    Abstract: There is provided methods for use in control signaling in advanced wireless communication systems that support flexible allocation of TDD UL-DL configurations. Where HARQ-ACK bundling is used, PDCCH/EPDCCH transmissions indicating DL SPS release and PDSCH transmissions with corresponding PDCCH/EPDCCH are scheduled only on DL and/or special subframes in a DL association set which are not after the subframe in the DL association set carrying an UL grant. Where HARQ-ACK multiplexing is used, the value of the DL assignment index (VDAIUL) is set to the number of subframes in the DL association set. Cross-subframe scheduling is also used.
    Type: Application
    Filed: May 29, 2014
    Publication date: September 17, 2015
    Applicant: NEC CORPORATION
    Inventors: Phong Nguyen, Yuanrong Lan
  • Publication number: 20150244485
    Abstract: A method is implemented in a base station used in a wireless communications system that supports flexible-TDD (flexible-time division duplex) UL-DL (uplink-downlink) configuration. The method includes configuring a first type of user equipment (UE) with a first type of configuration; configuring a second type of UE with a second type of configuration; and receiving from a user equipment a HARQ-ACK (hybrid automatic repeat request-acknowledgement) signal according to a DL association set. The DL association set includes: a first DL association set for a UL-DL TDD configuration used by the first type of UE; and a second DL association set for a reference UL-DL TDD configuration including a third DL association set for PUCCH resource mapping used by the second type of UE.
    Type: Application
    Filed: January 7, 2014
    Publication date: August 27, 2015
    Inventors: Phong Nguyen, Yuanrong Lan
  • Publication number: 20150163815
    Abstract: Communication systems, such as the long term evolution (LTE) advanced (LTE-A) of the third generation partnership project (3 GPP) may benefit from various enhancements. These enhancements can include LTE time division duplex (TDD) enhancements for traffic adaptation and uplink (UL)-downlink (DL) interference management. A method can include determining whether a first cell, in a network including the first cell and a second cell, autonomously selects a time division duplex uplink-downlink configuration. The method can also include sending an authority indicator to a base station of the first cell regarding a determination of whether the first cell is to autonomously select the configuration.
    Type: Application
    Filed: May 11, 2012
    Publication date: June 11, 2015
    Applicant: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Haipeng Lei, Kodo Shu, Yuanrong Lan, Chunhai Yao, Jiezhen Lin
  • Patent number: 9014120
    Abstract: A method of resource allocation, system and transmitter that the method includes scheduling a plurality of receivers by a transmitter according to requests for transmitting uplink data sent by the plurality of receivers, determining, respectively for each of the plurality of receivers, the uplink shared transmission channel resources, the used mapping relation of resources and the final cyclic shift n(DM_RS) for indicating an uplink feedback channel, according to the result of scheduling, a predefined mapping relation of resources, a spare mapping relation of resources and the n(DM_RS) and notifying the plurality of receivers by the transmitter of the determined uplink shared transmission channel resources of the plurality of receivers, the used mapping relation of resources and the final n(DM_RS).
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: April 21, 2015
    Assignee: Fujitsu Limited
    Inventors: Yuanrong Lan, Yi Wang, Yuantao Zhang, Hua Zhou, Jianming Wu
  • Patent number: 8897272
    Abstract: A method for Channel State Information (CSI) feedback in a wireless communication system includes: determining parameters required for the CSI feedback in a first wireless communication system, so that a feedback structure of the first wireless communication system in Physical Uplink Control Channel (PUCCH) is based on a feedback structure of a second wireless communication system in the PUCCH; notifying the parameters to a user equipment; transmitting a Channel State Information Reference Symbol (CSI-RS) to the user equipment periodically, so that the user equipment calculates the CSI required to be fed back; and receiving the CSI fed back by the user equipment according to the feedback structure of the first wireless communication system in the PUCCH in response to the CSI-RS, wherein information fed back for each BP is information obtained by jointly encoding optimum subband Channel Quality Information (CQI) with optimum subband Pre-encoding Matrix Information (PMI) in the BP.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: November 25, 2014
    Assignee: Fujitsu Limited
    Inventors: Yuantao Zhang, Yuanrong Lan, Yi Zhang, Hua Zhou, Jianming Wu
  • Publication number: 20130316721
    Abstract: A method, device, system, User Equipment (UE), computer readable medium and programme product for allocating uplink channel resource of cooperative multi-point transmission/reception are disclosed. The method includes receiving involved information for allocating uplink control channel resource or uplink detection reference signal resource in at least one of other cells; according to the information for allocating the uplink control channel resource or the uplink detection reference signal resource in the involved main cell and at least one of other cells, determining the uplink channel resource which does not overlap the uplink control channel resource or the uplink channel resource allocated for an uplink communication in the main cell and at least one of other cells; and allocating the determined uplink channel resource for the uplink cooperative multi-point transmission/reception in the involved main cell and at least one of other cells.
    Type: Application
    Filed: August 6, 2013
    Publication date: November 28, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Yuanrong LAN, Yuantao ZHANG, Yi ZHANG, Hua ZHOU, Jianming WU
  • Publication number: 20130315087
    Abstract: A mobile terminal, a micro base station, a macro base station, a communication system and a communication method. The method includes receiving from a micro base station a designation of specific subframe and a designation of feedback mode; judging whether a current subframe is a specific subframe designated by the micro base station; and measuring and feeding back the channel condition of the current subframe in a joint transmission feedback mode when the current subframe is the specific subframe designated by the micro base station, and measuring and feeding back the channel condition of the current subframe in a feedback mode designated by the micro base station when the current subframe is not the specific subframe designated by the micro base station.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicant: Fujitsu Limited
    Inventors: Yi ZHANG, Yuantao ZHANG, Yuanrong LAN, Hua ZHOU, Jianming WU