Patents by Inventor Shenfa Liu

Shenfa Liu 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: 20140064206
    Abstract: Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.
    Type: Application
    Filed: March 22, 2012
    Publication date: March 6, 2014
    Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Yongbo Zeng, Yubao Zhou, Zhigang Yan, Jun Lei, Lijun Pan, Feifei Wang
  • Publication number: 20140050230
    Abstract: Disclosed is a wireless communication method, comprising: determining a type of a media access control MAC frame header according to a type of a media access control protocol data unit MPDU; assigning a value to a function field in the MAC frame header to generate the MAC frame header; generating an MPDU, the MPDU at least comprising the MAC frame header; and encapsulating the MPDU and sending the encapsulated MPDU. Further disclosed are a transmitting device and a receiving device. By using the method and devices of the present invention, a signaling format having complete functions and compact structure and being easy to implement and extend is implemented, which is applicable to a newly defined medium-to-short distance wireless communication system, and reduces the complexity in processing.
    Type: Application
    Filed: March 16, 2012
    Publication date: February 20, 2014
    Applicant: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTD.
    Inventors: Dongshan Bao, Huijuan Yao, Yubao Zhou, Xiaoyan Yu, Shenfa Liu
  • Publication number: 20140044069
    Abstract: A method is for realizing Multi-Input Multi-Output which includes steps of: sending, by a Central Access Point, a downlink sounding channel, Multi-Input Multi-Output (MIMO) control information, and a feedback resource indicator to a Station (STA); detecting, by the STA, the downlink detection channel to obtain channel information, and feeding back on the feedback resource according to the indication of the MIMO control information; and selecting, by the Central Access Point, a suitable MIMO mode for downlink data transmission according to the feedback of the STA.
    Type: Application
    Filed: January 16, 2012
    Publication date: February 13, 2014
    Applicant: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTD
    Inventors: Dongshan Bao, Huijuan Yao, Jiaqing Wang, Xiaoyan Yu, Shenfa Liu, Zhigang Yan
  • Publication number: 20140022884
    Abstract: Disclosed is a communication method comprising: determining the length, N, of a random access sequence on the basis of system configuration information, where N is less than or equal to the number of available subcarriers; determining a cyclic shift parameter collection and a cyclic prefix on the basis of a system coverage area as designed; acquiring and on the basis of a MAC address of a central access point (CAP), or of a physical layer identifier thereof, and of a predetermined generator polynomial, generating a PN sequence of length N, then constellation-mapping and subcarrier-mapping the PN sequence; cyclically shifting, on the basis of the cyclic shift parameter, the constellation-mapped and subcarrier-mapped sequence, then orthogonally transforming the cyclically shifted sequence; acquiring the sequence needed, adding the cyclic prefix thereto, acquiring a random access signal; and performing subsequent processing then transmitting to a receiving-end.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 23, 2014
    Applicant: Beijing NuFront Mobile Multimedia Technology Co., Ltd.
    Inventors: Dongshan Bao, Lijun Pan, Shenfa Liu, Jing Wang, Jun Lei, Zhigang Yan
  • Publication number: 20140016622
    Abstract: Disclosed is a method for configuring a pilot frequency in a wireless communication system, comprising: on the basis of at least one item among a current wireless channel characteristic parameter, device capability information of a correspondent node, and system requirement information, configuring in real-time a pilot frequency for different transmissions during a transmission process; and transmitting the configuration result to the correspondent node. Also disclosed is a corresponding device for configuring the pilot frequency. The present invention allows for configuration in real-time of the pilot frequency. This facilitates improved transmission reliability and guaranteed communication quality, and reduces pilot frequency overhead, and at the same time, is applicable in additional number of channel environments and application scenarios.
    Type: Application
    Filed: March 22, 2012
    Publication date: January 16, 2014
    Applicant: Beijing NuFront Mobile Multimedia Technology Co., Ltd.
    Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Zhigang Yan, Feifei Wang