Patents by Inventor Xiaoan Fan

Xiaoan Fan 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: 20140126493
    Abstract: The application relates to radio communications and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method includes receiving downlink data packets and an uplink data assignment indicator (UL DAI) from a base station, wherein a value of the UL DAI indicates a number (N) of all scheduled downlink sub-frames which scheduled by the base station for the user equipment, the number N is greater than 1, and a number k (k<N) of the downlink data packets is/are semi-persistent scheduling (SPS) data packets; forming a feedback signal comprising N acknowledgements/negative acknowledgements (ACKs/NAKs) acknowledging the N downlink data packets, k ACKs/NAKs of the k SPS data packets is/are placed from (N?k+1)th to Nth positions of the N ACKs/NAKs; and sending the feedback signal to the base station starting from the ACK/NAK at the first position.
    Type: Application
    Filed: October 18, 2013
    Publication date: May 8, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Xiaoan FAN, Guang LIU, Bo LI, Yunzhe HOU
  • Publication number: 20140029486
    Abstract: Disclosed are a method, a base station and a user equipment for subframe configuration in a time division duplex system. The method comprises: a base station determining a subframe number of a flexible subframe in a radio frame; the base station determining a feature of the flexible subframe corresponding to the subframe number, where the feature indicates that the flexible subframe is an uplink subframe or a downlink subframe; and the base station sending to a user equipment a first signaling via a downlink control channel, where the first signaling includes the feature of the flexible subframe corresponding to the subframe number.
    Type: Application
    Filed: September 30, 2013
    Publication date: January 30, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Chaojun LI, Yongxia LV, Xiaoan FAN
  • Patent number: 8588762
    Abstract: Embodiments of the present invention provide a method and an apparatus for performing channel measurement for a cell. The method includes: sending information about a location of a to-be-measured reference signal to a user equipment, where the location of the to-be-measured reference signal is a part of a location occupied by a reference signal of the cell; and receiving a channel measurement report of the cell. The channel measurement report is sent by the user equipment and is obtained after the user equipment performs channel measurement for the cell according to the information about the location of the to-be-measured reference signal.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: November 19, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yajun Zhao, Qiang Li, Xiaoan Fan, Lei Wan
  • Publication number: 20130301586
    Abstract: A method for encoding acknowledgement information includes: receiving a component carrier, where the component carrier includes at least one downlink subframe; generating acknowledgement information bits corresponding to the component carrier according to the received component carrier; dividing the acknowledgement information bits into two groups so that each group includes at least one acknowledgement information bit, where the at least one acknowledgement information bit corresponds to physical downlink shared channel PDSCH transmission, and/or downlink control information DCI, where the DCI is used for indicating downlink semi-persistent scheduling SPS release; and encoding the two divided groups of acknowledgement information bits to obtain two groups of codeword bits, respectively, and generating, from the two groups of codeword bits obtained by the encoding, total codeword bits to be transmitted.
    Type: Application
    Filed: July 17, 2013
    Publication date: November 14, 2013
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaoan FAN, Yongxia LV, Xiaofeng Chen
  • Patent number: 8565182
    Abstract: The application relates to radio communications and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method includes receiving downlink data packets and an uplink data assignment indicator (UL DAI) from a base station (BS), wherein a value of the UL DAI indicates a number (N) of all scheduled downlink sub-frames which scheduled by the BS for the UE, the number N is greater than 1, and a number k (k<N) of the downlink data packets is/are semi-persistent scheduling (SPS) data packets; forming a feedback signal comprising N acknowledgements/negative acknowledgements (ACKs/NAKs) acknowledging the N downlink data packets, k ACKs/NAKs of the k SPS data packets is/are placed from (N?k+1)th to Nth positions of the N ACKs/NAKs; and sending the feedback signal to the BS starting from the ACK/NAK at the first position.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: October 22, 2013
    Assignee: Huawei Technologies Co., Ltd
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou
  • Patent number: 8547928
    Abstract: A multi-subframe scheduling method includes receiving Physical Downlink Control Channel (PDCCH) information which is sent by a base station and includes time domain resource indication information. The time domain resource indication information is used to indicate information of multiple subframes scheduled by the PDCCH information. Data is transmitted and received, according to the PDCCH information, on the multiple subframes scheduled by the PDCCH information.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: October 1, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yongxia Lv, Xiaoan Fan, Bo Li
  • Patent number: 8358621
    Abstract: A method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets are disclosed. The method for feeding back ACK information of SPS data packets includes receiving an uplink downlink assignment index (UL DAI) from a base station (BS), wherein the UL DAI indicates a number (N) of downlink data packets, mapping acknowledgements/negative acknowledgements (ACKs/NAKs) of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK, and feeding back N ACKs/NAKs to the BS.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: January 22, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou
  • Publication number: 20120224559
    Abstract: The present invention discloses a method and an apparatus for notification of emitted energy. The method includes: performing an emitted energy decrease on resource elements in a current cell that have a same time-frequency location as part or all of resource elements where a reference signal of a neighboring cell is located; obtaining an emitted energy parameter of an energy non-decreased resource element (NRE) in the current cell according to a decreased amount of emitted energy of an emitted energy decreased resource element (DRE); and notifying the emitted energy parameter of the NRE to a user equipment (UE). According to embodiments of the present invention, the waste of emitted energy may be avoided, the emitted energy of part of REs is increased, and further, the signal to interference plus noise ratio (SINR) and throughput of service data may be increased.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaotao Ren, Lei Wan, Zhiyu Yan, Yajun Zhao, Xiaoan Fan
  • Patent number: 8249010
    Abstract: The present invention relates to radio communications, and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method for feeding back ACK information of SPS data packets includes: receiving an uplink downlink assignment index (UL DAI) from a base station (BS), where the value of the UL DAI indicates the number of downlink data packets (N); mapping ACKs/NAKs of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK; and feeding back N ACKs/NAKs to the BS. This method can guarantee that N ACKs/NAKs are arranged correctly.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: August 21, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou
  • Publication number: 20120190356
    Abstract: Embodiments of the present invention provide a method and an apparatus for performing channel measurement for a cell. The method includes: sending information about a location of a to-be-measured reference signal to a user equipment, where the location of the to-be-measured reference signal is a part of a location occupied by a reference signal of the cell; and receiving a channel measurement report of the cell. The channel measurement report is sent by the user equipment and is obtained after the user equipment performs channel measurement for the cell according to the information about the location of the to-be-measured reference signal.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 26, 2012
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yajun Zhao, Qing Li, Xiaoan Fan, Lei Wan
  • Publication number: 20120155368
    Abstract: A method and device for service time division multiplexing as well as a method and a device for transmitting service are disclosed. The method for service time division multiplexing includes: selecting a part or all of radio frames in one time unit as specific radio frames; and selecting a part or all of subframes in the specific radio frames as specific subframes for sending a specific service. The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one kind of services transmitted in broadcast or multicast mode.
    Type: Application
    Filed: February 24, 2012
    Publication date: June 21, 2012
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Junwei Wang, Xiaoan Fan, Jianghua Liu
  • Publication number: 20120155369
    Abstract: A method and device for service time division multiplexing as well as a method and a device for transmitting service are disclosed. The method for service time division multiplexing includes: selecting a part or all of radio frames in one time unit as specific radio frames; and selecting a part or all of subframes in the specific radio frames as specific subframes for sending a specific service. The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one kind of services transmitted in broadcast or multicast mode.
    Type: Application
    Filed: February 24, 2012
    Publication date: June 21, 2012
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Junwei Wang, Xiaoan Fan, Jianghua Liu
  • Publication number: 20120127938
    Abstract: A multi-subframe scheduling method includes receiving Physical Downlink Control Channel (PDCCH) information which is sent by a base station and includes time domain resource indication information. The time domain resource indication information is used to indicate information of multiple subframes scheduled by the PDCCH information. Data is transmitted and received, according to the PDCCH information, on the multiple subframes scheduled by the PDCCH information.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 24, 2012
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yongxia Lv, Xiaoan Fan, Bo Li
  • Patent number: 8160047
    Abstract: A method and device for service time division multiplexing as well as a method and a device for transmitting service are disclosed. The method for service time division multiplexing includes: selecting a part or all of radio frames in one time unit as specific radio frames; and selecting a part or all of subframes in the specific radio frames as specific subframes for sending a specific service. The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one kind of service transmitted in broadcast or multicast mode.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: April 17, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Junwei Wang, Xiaoan Fan, Jianghua Liu
  • Patent number: 8149814
    Abstract: A method and device for service time division multiplexing as well as a method and a device for transmitting service are disclosed. The method for service time division multiplexing includes: selecting a part or all of radio frames in one time unit as specific radio frames; and selecting a part or all of subframes in the specific radio frames as specific subframes for sending a specific service. The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one kind of service transmitted in broadcast or multicast mode.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: April 3, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Junwei Wang, Xiaoan Fan, Jianghua Liu
  • Publication number: 20110194521
    Abstract: A method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets are disclosed. The method for feeding back ACK information of SPS data packets includes receiving an uplink downlink assignment index (UL DAI) from a base station (BS), wherein the UL DAI indicates a number (N) of downlink data packets, mapping acknowledgements/negative acknowledgements (ACKs/NAKs) of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK, and feeding back N ACKs/NAKs to the BS.
    Type: Application
    Filed: April 26, 2011
    Publication date: August 11, 2011
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou
  • Patent number: 7912007
    Abstract: The present invention relates to radio communications and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method for feeding back ACK information of SPS data packets includes receiving an uplink downlink assignment index (UL DAI) from a base station (BS), wherein the UL DAI indicates a number (N) of downlink data packets, mapping acknowledgements/negative acknowledgements (ACKs/NAKs) of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK, and feeding back N ACKs/NAKs to the BS.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: March 22, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou
  • Publication number: 20110019659
    Abstract: A method and device for service time division multiplexing as well as a method and a device for transmitting service are disclosed. The method for service time division multiplexing includes: selecting a part or all of radio frames in one time unit as specific radio frames; and selecting a part or all of subframes in the specific radio frames as specific subframes for sending a specific service. The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one kind of service transmitted in broadcast or multicast mode.
    Type: Application
    Filed: October 13, 2010
    Publication date: January 27, 2011
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Junwei Wang, Xiaoan Fan, Jianghua Liu
  • Publication number: 20100260135
    Abstract: The present invention relates to radio communications and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method for feeding back ACK information of SPS data packets includes receiving an uplink downlink assignment index (UL DAI) from a base station (BS), wherein the UL DAI indicates a number (N) of downlink data packets, mapping acknowledgements/negative acknowledgements (ACKs/NAKs) of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK, and feeding back N ACKs/NAKs to the BS.
    Type: Application
    Filed: July 2, 2010
    Publication date: October 14, 2010
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou
  • Publication number: 20100111024
    Abstract: The present invention relates to radio communications, and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method for feeding back ACK information of SPS data packets includes: receiving an uplink downlink assignment index (UL DAI) from a base station (BS), where the value of the UL DAI indicates the number of downlink data packets (N); mapping ACKs/NAKs of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK; and feeding back N ACKs/NAKs to the BS. This method can guarantee that N ACKs/NAKs are arranged correctly.
    Type: Application
    Filed: November 2, 2009
    Publication date: May 6, 2010
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaoan Fan, Guang Liu, Bo Li, Yunzhe Hou