Patents by Inventor Fang-Chen Cheng

Fang-Chen Cheng 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).

  • Publication number: 20190357203
    Abstract: The present application discloses an uplink data retransmission method and terminal. The method comprises: a terminal determining whether to spontaneously retransmit first uplink data; and if the terminal determines to spontaneously retransmit the first uplink data, the terminal retransmitting the first uplink data on a physical resource that is pre-configured on a network side. The application adopts the above technical solution to resolve the technical problem in which, for a URLLC service, if a retransmission mechanism is based on a conventional HARQ mechanism, a certain time interval is required between two adjacent transmissions of uplink data, which may result in retransmission being unsupported for a certain time delay requirement and configuration, and as a result a reliability requirement for the URLLC service cannot be met.
    Type: Application
    Filed: February 2, 2018
    Publication date: November 21, 2019
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Yanping XING, Fang-Chen CHENG, Ekpenyong TONY
  • Publication number: 20190356459
    Abstract: The present invention relates to the technical field of communications, and specifically relates to a method and device for determining the initial positions of a downlink data channel. The present invention solves the problem of determining the initial positions in the time domain of a downlink data channel when the resources occupied by a downlink control channel in the time domain are variable. The method comprises: a base station transmits to a terminal a generated indication signaling, and the terminal determines, on the basis of the received indication signaling, the time domain initial positions of the downlink data channel in L downlink TTIs.
    Type: Application
    Filed: February 28, 2018
    Publication date: November 21, 2019
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Lei WANG, Ekpenyong TONY, Xueming PAN, Fang-Chen CHENG
  • Patent number: 10390244
    Abstract: A method of measuring radio link quality in a D2D user equipment in a wireless communication system including an eNB and at least two D2D user equipments, UEs: a first D2D UE receives a discovery packet from a second D2D UE; and the first D2D UE measures the radio link quality based on the reception of the discovery packet and generates a wireless link quality indication, which indicates sidelink quality between the first D2D UE and the second D2D UE; wherein the at least two D2D user equipments include an alternative UE-to-network relay D2D UE and a remote D2D UE; and the first D2D UE is the remote D2D UE, and the second D2D UE is the alternative UE-to-network relay D2D UE; or the first D2D UE is the alternative UE-to-network relay D2D UE, and the second D2D UE is the remote D2D UE.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: August 20, 2019
    Assignee: Alcatel Lucent
    Inventors: Fang-Chen Cheng, Dong Li, Yong Liu
  • Patent number: 10341961
    Abstract: A method for determining a Physical Uplink Share Channel (PUSCH) transmission power may comprise measuring reference signal received power, calculating downlink path loss by comparing the reference signal received power to a downlink transmit power from a next generation node B (gNB), obtaining parameters from the gNB, and determining the PUSCH transmission power based on a configured user equipment (UE) transmission power, bandwidth of PUSCH resource assignment, a target power including the sum of a cell specific nominal component and a UE specific component, a scaling factor, a downlink (DL) path loss, a UE specific parameter for different types of traffic, and a PUSCH power control adjustment state. The method may further comprise calculating a numerology adjustment factor based on a configured subcarrier spacing and a default subcarrier spacing, and utilizing the numerology adjustment factor to determine the PUSCH transmission power.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: July 2, 2019
    Assignee: China Academy of Telecommunications Technology
    Inventor: Fang-Chen Cheng
  • Patent number: 10334479
    Abstract: A heterogeneous radio access network system includes a mobile device and a first base station operated in a first wireless access network. The mobile device is wireless communicated with the first base station. One of the mobile device and the first base station sends a traffic steering initial message to request a traffic steering operation, the traffic steering initial message including a plurality of traffic flows. The other one of the mobile device and the first base station decides whether to accept or reject the traffic steering initial message. If the other one of the mobile device and the first base station accepts the traffic steering initial message, the mobile device performs a selective traffic steering, wherein the selective traffic steering comprises traffic flow(s), and the traffic flow(s) in the selective traffic steering are selected among the traffic flows of the traffic steering initial message.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: June 25, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ching-Wen Cheng, Hung-Chen Chen, Fang-Ching Ren
  • Publication number: 20190173721
    Abstract: Disclosed in the present invention are a method and device for transmitting and detecting a synchronous signal, which is used to solve the problem that there is currently no clear solution as to how should a terminal detect a synchronous signal when multiple types of base-band numerology are defined in a new wireless communication system. The method comprises: a terminal determining a base-band numerology used to detect a synchronous signal; the terminal detecting the synchronous signal according to the determined base-band numerology. The terminal first determines a base-band numerology used to detect a synchronous signal before detecting said synchronous signal, and then detects the synchronous signal according to the determined base-band numerology, so as to identify the base-band numerology used in the synchronous signal transmission in future communication systems which support multiple types of base-band numerology, thereby correctly detecting the synchronous signal.
    Type: Application
    Filed: May 24, 2017
    Publication date: June 6, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Xuejuan GAO, Fang-Chen CHENG, Xueming PAN, Qiubin GAO
  • Patent number: 10306533
    Abstract: A method of facilitating dormant small cell discovery in a wireless communications network including at least a small cell and a second cell includes changing, at the small cell, an operating state of the small cell from an active state to a dormant state, the dormant state being a state in which the small cell transmits discovery signals and does not transmit DL broadcast or DL control channels, the discovery signals being signals through which user equipments (UE)s discover the dormant small cell; sending, from the dormant small cell, a notification, the notification identifying, for at least the second cell, a duty cycle with which the first small cell will periodically transmit the discovery signals; and transmitting, from the dormant small, the discovery signals using a periodic transmission pattern that includes active portions and non-active portions defined by the duty cycle.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: May 28, 2019
    Assignee: ALCATEL LUCENT
    Inventors: Fang-chen Cheng, Said Tatesh
  • Patent number: 10277430
    Abstract: A method of configuring user equipment in a wireless communication network to operate to receive a dynamically changing coordinated multipoint transmission from one or more transmission point in said network, a computer program product and network control node operable to perform that method. The method comprises: determining, for the user equipment, a set of two or more transmission points from which the user equipment may receive a transmission and allocating them to a coordinated multipoint transmission measurement set associated with the user equipment; allocating a set of modes of operation of the transmission points in the coordinated multipoint transmission measurement set for communication with the user equipment; associating a codepoint to each mode in the allocated set of modes of operation of the set of transmission points to form a codebook; and informing the user equipment of the codebook.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: April 30, 2019
    Assignee: Alcatel Lucent
    Inventors: Matthew Baker, Fang-Chen Cheng, Min Zhang
  • Publication number: 20190123878
    Abstract: Disclosed in the present application are a method and device for transmitting feedback information, used to define new feedback timing for downlink data using a dynamic and variable TTI length during transmission, so as to ensure that ACK/NACK feedback information of downlink data is fed back on an earliest uplink transmission resource meeting a processing delay requirement, thereby reducing system delay.
    Type: Application
    Filed: February 8, 2017
    Publication date: April 25, 2019
    Inventors: Xuejuan GAO, Xueming PAN, Fang-Chen CHENG, Qianqian SI
  • Publication number: 20190109692
    Abstract: The application discloses an ACK/NACK feedback method and an associated apparatus serving to resolve the problem arising from data in different transmission time intervals having different transmission and processing latencies, leading to different earliest time points to transmit an ACK/NACK feedback message, and subsequently resulting in being unable to ensure normal ACK/NACK feedback in downlink transmission.
    Type: Application
    Filed: March 1, 2017
    Publication date: April 11, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Xuejuan GAO, Fang-Chen CHENG
  • Publication number: 20190045536
    Abstract: The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting uplink control information. The method comprises: a terminal determines a resource for transmitting uplink control information, wherein the resource comprises a time domain occupation resource and a frequency domain occupation resource, and duration of the time domain occupation resource is less than 1 ms; and then the terminal transmits the uplink control information on the determined resource. In this way, a solution for uplink control information transmission is provided for the shortened TTI, normal feedback of the uplink control information is supported, and the system performance is ensured.
    Type: Application
    Filed: January 18, 2017
    Publication date: February 7, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Xuejuan GAO, Qianqian SI, Xueming PAN, Fang-Chen CHENG
  • Publication number: 20190045531
    Abstract: Disclosed in the present invention are a method and apparatus for transmitting and detecting downlink control information. The method comprises: determining a state of resource allocation in a downlink transmission time period, the resource allocation comprising allocation of at least one downlink transmission resource region; and transmitting downlink control information on a preset resource in the at least one downlink transmission resource region, the downlink control information being used for scheduling at least one terminal to perform data transmission in the downlink transmission resource region. The method also comprises: detecting the downlink control information on the preset resource in the downlink transmission time period; determining, according to the detected downlink control information, a data transmission region indicated by the downlink control information; and detecting follow-up downlink control information according to the data transmission region.
    Type: Application
    Filed: January 19, 2017
    Publication date: February 7, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Lei WANG, Xuejuan GAO, Fang-Chen CHENG, Shaohui SUN
  • Publication number: 20180375633
    Abstract: Disclosed are an uplink and downlink transmission resource allocation method and device. In this application, a first channel is transmitted on a specified time-frequency resource within a first channel transmitting period according to the first channel transmitting period. The first channel is at least used for notifying allocation information of an uplink transmission resource and a downlink transmission resource within the first channel transmitting period or an effective time period of the first channel, so that dynamic partitioning and notification of the uplink transmission resource and the downlink transmission resource are achieved.
    Type: Application
    Filed: January 17, 2017
    Publication date: December 27, 2018
    Inventors: Xuejuan GAO, Fang-chen CHENG, Xueming PAN, Shaohui SUN
  • Publication number: 20180376496
    Abstract: A method and apparatus for transmitting downlink control information. In the present invention, transmitted downlink control information at least comprises one or more of the following information fields: a first information field used for indicating the frequency domain resources occupied by the data resources scheduled by the DCI, a second information field used for indicating the time frequency resources occupied by the data resources scheduled by the DCI, and a third information field used for indicating the scheduled N users. As the resource size occupied by the transmission resources in the frequency domain and/or in the time domain is indicated by means of the downlink control information, transmission of downlink control information can be implemented in flexible resource allocation scenarios having variable transmission time intervals.
    Type: Application
    Filed: January 20, 2017
    Publication date: December 27, 2018
    Inventors: Lei WANG, Fang-Chen CHENG, Xuejuan GAO, Xueming PAN, Shaohul SUN
  • Publication number: 20180338301
    Abstract: The present invention relates to the technical field of communications, and relates in particular to a downlink control information (DCI) transmission method and device, the DCI transmission method comprising: confirming information used indicating a bit number of a first indication field within DCI, the information comprising high layer signalling configuration information or information for whether to configure an unauthorized member carrier; according to the high layer signalling configuration information or the information for whether to configure an unauthorized member carrier, determining the bit number of the first indication field included in the DCI.
    Type: Application
    Filed: January 11, 2017
    Publication date: November 22, 2018
    Applicant: China Academy of Telecommunications Technology
    Inventors: Xuejuan GAO, Xueming PAN, Fang-Chen CHENG
  • Publication number: 20180324708
    Abstract: A method for determining a Physical Uplink Share Channel (PUSCH) transmission power may comprise measuring reference signal received power, calculating downlink path loss by comparing the reference signal received power to a downlink transmit power from a next generation node B (gNB), obtaining parameters from the gNB, and determining the PUSCH transmission power based on a configured user equipment (UE) transmission power, bandwidth of PUSCH resource assignment, a target power including the sum of a cell specific nominal component and a UE specific component, a scaling factor, a downlink (DL) path loss, a UE specific parameter for different types of traffic, and a PUSCH power control adjustment state. The method may further comprise calculating a numerology adjustment factor based on a configured subcarrier spacing and a default subcarrier spacing, and utilizing the numerology adjustment factor to determine the PUSCH transmission power.
    Type: Application
    Filed: March 23, 2018
    Publication date: November 8, 2018
    Inventor: FANG-CHEN CHENG
  • Publication number: 20180279294
    Abstract: The present application provides a frequency domain spreading and de-spreading method and apparatus. In embodiments of the present application, user equipment acquires indication information of an orthogonal sequence used by a transmission physical uplink control channel (PUCCH); the user equipment spreads, according to an orthogonal sequence corresponding to the indication information of the orthogonal sequence, a frequency domain for uplink control information borne by the PUCCH; and the user equipment transmits, over a frequency domain resource corresponding to the PUCCH, the uplink control information of which the frequency domain is spread. The present application can spread a frequency domain for uplink control information borne by a PUCCH.
    Type: Application
    Filed: August 30, 2016
    Publication date: September 27, 2018
    Inventors: Xuejuan GAO, Fang-Chen CHENG
  • Publication number: 20180279295
    Abstract: The present application provides a PUCCH-based uplink control information transmission method and apparatus. User equipment determines, according to downlink control information (DCI), a format of a physical uplink control channel (PUCCH) and/or information of a used orthogonal sequence; and the user equipment transmits, according to the format of the PUCCH and/or the information of the used orthogonal sequence, uplink control information borne by the PUCCH. The present application can implement selection of a transmission structure of a PUCCH to transmit uplink control information.
    Type: Application
    Filed: August 12, 2016
    Publication date: September 27, 2018
    Inventors: Xuejuan GAO, Fang-Chen CHENG
  • Patent number: 10028283
    Abstract: A radio access network element includes a transceiver and a processor. The transceiver is configured to communicate with at least a first user equipment. The processor is operatively coupled to the transceiver, and the processor is configured to allocate first wireless resources for transmission of first control information by the first user equipment on an uplink control channel during at least a first subframe among a plurality of subframes of a radio frame. The first wireless resources are assigned a format independent of wireless resources allocated for transmission during others of the plurality of subframes of the radio frame.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: July 17, 2018
    Assignee: Alcatel-Lucent USA Inc.
    Inventor: Fang-Chen Cheng
  • Publication number: 20180160325
    Abstract: A method of measuring radio link quality in a D2D user equipment in a wireless communication system including an eNB and at least two D2D user equipments, UEs: a first D2D UE receives a discovery packet from a second D2D UE; and the first D2D UE measures the radio link quality based on the reception of the discovery packet and generates a wireless link quality indication, which indicates sidelink quality between the first D2DUE and the second D2D UE; wherein the at least two D2D user equipments include an alternative UE-to-network relay D2D UE and a remote D2D UE; and the first D2D UE is the remote D2D UE, and the second D2D UE is the alternative UE-to-network relay D2D UE; or the first D2D UE is the alternative UE-to-network relay D2D UE, and the second D2D UE is the remote D2D UE.
    Type: Application
    Filed: May 13, 2016
    Publication date: June 7, 2018
    Applicant: Alcatel Lucent
    Inventors: Fang-Chen Cheng, Dong Li, Yong Liu