Patents by Inventor Xiaofeng Chen

Xiaofeng Chen 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: 9591650
    Abstract: Embodiments of the present invention disclose a communication method, a receiving method and an apparatus in a wireless local area network. The communication method includes: determining a first channel and a second channel of the wireless local area network, where the first channel and the second channel are consecutive, and the wireless local area network includes a first local area network and a second local area network; sending a first beacon frame by using all or a part of a bandwidth of the first channel, where the first beacon frame includes system information of the first local area network; and sending a second beacon frame by using all or a part of a bandwidth of the second channel, where the second beacon frame includes system information of the second local area network. The embodiments of the present invention improve a utilization rate of system spectrum resources.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: March 7, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xiaofeng Chen
  • Patent number: 9553700
    Abstract: A control channel of a communication method and an apparatus includes at least one timeslot, and the method includes: obtaining, according to a first data symbol sequence to be transmitted in a timeslot and coefficients a(i) and d(i), a second data symbol sequence and a third data symbol sequence, where, in a(i)+d(i), at least one pair of a(u)+d(u) and a(v)+d(v) have moduli unequal to each other; and using the same extension sequence [w(0), w(1), . . . , w(N?1)] to process the second data symbol sequence and the third data symbol sequence, mapping the processed data respectively onto the same time-frequency resources corresponding to a first antenna array and a second antenna array, and transmitting the data, where i, u, and v are integers, 0?i?M?1, and u?v.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 24, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Xiaofeng Chen
  • Publication number: 20170005754
    Abstract: A method, an apparatus, and a system for transmitting information bits, where the method for transmitting information bits includes: dividing the information bits to be transmitted into at least two groups; encoding the information bits to be transmitted in each group; modulating the coded bits obtained by the encoding to obtain modulation symbols, in which each modulation symbol is obtained by using the modulation of the coded bits in the same group; and mapping and transmitting the modulation symbols. In this way, the receiving end easily reduces the algorithm complexity, thereby ensuring the performance of the receiving end.
    Type: Application
    Filed: September 14, 2016
    Publication date: January 5, 2017
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaofeng CHEN, Yongxia LV, Yan CHENG
  • Publication number: 20160369118
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Application
    Filed: August 25, 2016
    Publication date: December 22, 2016
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Authur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher Steven Scully, Ajay Virkar
  • Publication number: 20160338029
    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 29, 2016
    Publication date: November 17, 2016
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaoan FAN, Yongxia LV, Xiaofeng CHEN
  • Patent number: 9461775
    Abstract: A method, an apparatus, and a system for transmitting information bits, where the method for transmitting information bits includes: dividing the information bits to be transmitted into at least two groups; encoding the information bits to be transmitted in each group; modulating the coded bits obtained by the encoding to obtain modulation symbols, in which each modulation symbol is obtained by using the modulation of the coded bits in the same group; and mapping and transmitting the modulation symbols. In this way, the receiving end easily reduces the algorithm complexity, thereby ensuring the performance of the receiving end.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: October 4, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaofeng Chen, Yongxia Lv, Yan Cheng
  • Patent number: 9447301
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: September 20, 2016
    Assignee: C3Nano Inc.
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher S. Scully, Ajay Virkar
  • Publication number: 20160249326
    Abstract: Embodiments of the present invention relate to a communication method and a device in a time division duplexing system. The communication method in a time division duplexing system includes: notifying a user equipment of an uplink-downlink configuration of a radio frame; specifying a part of downlink subframes corresponding to the uplink-downlink configuration of the radio frame as MBSFN subframes; and sending first information to the user equipment, where the first information is used to indicate that multicast areas of the MBSFN subframes are used for uplink communication or downlink communication.
    Type: Application
    Filed: May 3, 2016
    Publication date: August 25, 2016
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaofeng CHEN, Yongxia LV
  • Patent number: 9408203
    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: Grant
    Filed: July 17, 2013
    Date of Patent: August 2, 2016
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaoan Fan, Yongxia Lv, Xiaofeng Chen
  • Patent number: 9363030
    Abstract: Embodiments of the present invention relate to a communication method and a device in a time division duplexing system. The communication method in a time division duplexing system includes: notifying a user equipment of an uplink-downlink configuration of a radio frame; specifying a part of downlink subframes corresponding to the uplink-downlink configuration of the radio frame as MBSFN subframes; and sending first information to the user equipment, where the first information is used to indicate that multicast areas of the MBSFN subframes are used for uplink communication or downlink communication.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 7, 2016
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaofeng Chen, Yongxia Lv
  • Patent number: 9301322
    Abstract: The present invention provides a random access method, a user equipment and a network equipment. The method comprising: acquiring a random access group scheduling identity, wherein the random access group scheduling identity is shared by user equipments belonging to a first group; receiving control signaling scrambled by the random access group scheduling identity on a PDCCH, and decoding the control signaling according to the random access group scheduling identity; receiving a data packet on a PDSCH according to the decoded control signaling, wherein the data packet comprises indication information used for instructing at least one UE belonging to the first group to perform a random access; and determining that the random access is needed to be performed according to the indication information, and performing the random access. The embodiments of the present invention may save PDCCH resource.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: March 29, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Qufang Huang, Wei Quan, Yi Jiang, Xiaofeng Chen, Jian Zhang
  • Publication number: 20160032127
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Application
    Filed: September 9, 2015
    Publication date: February 4, 2016
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher S. Scully, Ajay Virkar
  • Patent number: 9183968
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 10, 2015
    Assignee: C3Nano Inc.
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher S. Scully, Ajay Virkar
  • Patent number: 9150746
    Abstract: Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: October 6, 2015
    Assignee: C3Nano Inc.
    Inventors: Ying-Syi Li, Xiqiang Yang, Yu Kambe, Xiaofeng Chen, Hua Gu, Steven Michael Lam, Melanie Mariko Inouye, Arthur Yung-Chi Cheng, Alex Da Zhang Tan, Christopher S. Scully, Ajay Virkar
  • Patent number: 9148878
    Abstract: Embodiments of the present invention provide a method for detecting and sending control signaling, a user equipment, and a base station. The detecting method includes: obtaining, by a UE, a transmission mode of a data channel configured by a base station; determining, by the UE, a first DCI format and a second DCI format that are corresponding to the transmission mode, where PDCCH information corresponding to the first DCI format is transmitted in a precoding-based mode, and PDCCH information corresponding to the second DCI format is transmitted in a single-antenna port mode or transmit diversity mode based on non-precoding; and detecting, by the UE and in a subframe, PDCCH information corresponding to the first DCI format and the second DCI format according to a mode in which the PDCCH information is transmitted.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: September 29, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lei Guan, Yongxia Lv, Xiaofeng Chen, Yan Cheng
  • Patent number: 9084354
    Abstract: A method for designing a printed circuit board to meet a specification is described. A first voltage switchable dielectric material is placed in apposition with a first copper foil. A second voltage switchable dielectric material is placed in apposition with a second copper foil. An arcuate portion of the first copper foil is placed in apposition with a first side of an aluminum member, an adhesive substance being situated between the first copper foil and the first side of the aluminum member. An arcuate portion of the second copper foil in is placed apposition with a second side of the aluminum member, an adhesive substance being situated between the second copper foil and the second side of the aluminum member.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: July 14, 2015
    Assignee: LITTELFUSE, INC.
    Inventors: Robert Fleming, Lex Kosowsky, Shurui Shang, Bhret Graydon, Xiaofeng Chen, Glen Irvin
  • Publication number: 20150078354
    Abstract: Embodiments of the present invention disclose a communication method, a receiving method and an apparatus in a wireless local area network. The communication method includes: determining a first channel and a second channel of the wireless local area network, where the first channel and the second channel are consecutive, and the wireless local area network includes a first local area network and a second local area network; sending a first beacon frame by using all or a part of a bandwidth of the first channel, where the first beacon frame includes system information of the first local area network; and sending a second beacon frame by using all or a part of a bandwidth of the second channel, where the second beacon frame includes system information of the second local area network. The embodiments of the present invention improve a utilization rate of system spectrum resources.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Inventor: Xiaofeng CHEN
  • Publication number: 20140334563
    Abstract: A method, an apparatus, and a system for transmitting information bits, where the method for transmitting information bits includes: dividing the information bits to be transmitted into at least two groups; encoding the information bits to be transmitted in each group; modulating the coded bits obtained by the encoding to obtain modulation symbols, in which each modulation symbol is obtained by using the modulation of the coded bits in the same group; and mapping and transmitting the modulation symbols. In this way, the receiving end easily reduces the algorithm complexity, thereby ensuring the performance of the receiving end.
    Type: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Xiaofeng CHEN, Yongxia LV, Yan CHENG
  • Patent number: 8831129
    Abstract: A method, an apparatus, and a system for transmitting information bits, where the method for transmitting information bits includes: dividing the information bits to be transmitted into at least two groups; encoding the information bits to be transmitted in each group; modulating the coded bits obtained by the encoding to obtain modulation symbols, in which each modulation symbol is obtained by using the modulation of the coded bits in the same group; and mapping and transmitting the modulation symbols. In this way, the receiving end easily reduces the algorithm complexity, thereby ensuring the performance of the receiving end.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: September 9, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaofeng Chen, Yongxia Lv, Yan Cheng
  • Patent number: 8818277
    Abstract: The disclosure discloses a method, an apparatus and a system for transmitting multimedia data by bluetooth and real-time playing, wherein the method includes: a bluetooth apparatus at a transmitting terminal encodes multimedia files to be transmitted, and converts them into stream media files; the bluetooth apparatus at the transmitting terminal transmits the stream media files to a bluetooth apparatus at a receiving terminal through an Object Push Profile (OPP); the bluetooth apparatus at the receiving terminal plays the received stream media files. It is because the bluetooth apparatus at the transmitting terminal transmits the stream media files through the OPP and the bluetooth apparatus at the receiving terminal receives and plays them, and then the waiting time for playing is reduced. It is solved the problem in the prior art that audio or video playing can be carried out only after the completion of the transmission by bluetooth and the waiting time is longer.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: August 26, 2014
    Assignee: ZTE Corporation
    Inventor: Xiaofeng Chen