Patents by Inventor Shiyan Ren

Shiyan Ren 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: 9137779
    Abstract: The present invention discloses a MBMS dedicated carrier configuration method, including: at least one of MBMS dedicated carriers in a cell is chose and assigned MBMS control information of all MBMS dedicated carriers and MBMS system information; and frequency information and scrambling code group ID information of at least one MBMS dedicated carriers assigned bundling information is assigned to conventional service carriers in the cell. The present invention also discloses a device for realizing said method and a MBMS transmission method based on dedicated carriers assigned the bundling information. The present invention realizes MBMS bundling on the dedicated carriers, and UE can receive services by directly sensing the carriers bearing control signaling, and thus it can reduce meaningless switching sense by the UE and save power.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: September 15, 2015
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xuelong Wang, Yu Ding, Lei Mao, Shiyan Ren
  • Patent number: 8655263
    Abstract: A method for searching for a broadcast/multicast single frequency network cluster, when a terminal needs to receive the broadcast/multicast service in the broadcast/multicast single frequency network cluster, the terminal synchronizes to a non broadcast/multicast single frequency network cell which is associated with the broadcast/multicast single frequency network cluster; and the terminal searches for the broadcast/multicast single frequency network cluster on the basis of the information indicated by the system information in the non broadcast/multicast single frequency network cell. So that the UE can search for the corresponding MBSFN cluster, and can receive the MBMS service in the searched MBSFN cluster.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: February 18, 2014
    Assignee: China Academy of Telecommunications Technology
    Inventors: Xuelong Wang, Yu Ding, Shiyan Ren, Lei Mao
  • Patent number: 8611461
    Abstract: A modulation method and device for modulating transfer format combination indicator TFCI information, the method including: dividing equally original TFCI information in a unit of 2 bits in a transmission time interval TTI; extending the resultant respective parts of the TFCI information after the division to correspond to identifiers of one or more designated energy points in a preset constellation; and mapping the respective extended parts of the TFCI information to the corresponding energy points for modulating.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: December 17, 2013
    Assignee: China Academy of Telecommunications Technology
    Inventors: Yu Ding, Xiaodong Yang, Xunwei Zhao, Shiyan Ren
  • Patent number: 8451765
    Abstract: A method includes: sending, by an RNC, MBMS data to base stations of the target cells or sectors, distributing the same time and frequency resources, scrambling code and midamble to the cells or sectors to transmit the MBMS data, sending information of the distributed resources, scrambling code and midamble to the base stations and UEs of the target cells or sectors; and rotating, by each of the base stations, the MBMS burst signal to be sent by a random phase, sending the rotated signal to the UE using time and frequency resources distributed by RNC. A system includes an RNC, base stations and a UE, and each of the base stations includes a phase processing module and a signal sending module.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: May 28, 2013
    Assignee: China Academy of Telecommunications Technology
    Inventors: Yingmin Wang, Yu Ding, Hongyan Xu, Shiyan Ren, Yuemin Cai
  • Patent number: 8427997
    Abstract: An access method of MBMS on dedicated carrier relates to MBMS access technology on dedicated carrier, including: synchronize a user equipment to a MBMS dedicated carrier; the user equipment detects a start-frame of system message on the MBMS dedicated carrier; and the terminal monitors the system message from the start-frame of system message. An apparatus of realizing the method is also provided.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: April 23, 2013
    Assignee: China Academy of Telecommunications Technology
    Inventors: Shiyan Ren, Yu Ding, Lei Mao
  • Publication number: 20110280339
    Abstract: A modulation method and device for modulating transfer format combination indicator TFCI information, the method including: dividing equally original TFCI information in a unit of 2 bits in a transmission time interval TTI; extending the resultant respective parts of the TFCI information after the division to correspond to identifiers of one or more designated energy points in a preset constellation; and mapping the respective extended parts of the TFCI information to the corresponding energy points for modulating.
    Type: Application
    Filed: August 13, 2008
    Publication date: November 17, 2011
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Yu Ding, Xiaodong Yang, Xunwei Zhao, Shiyan Ren
  • Patent number: 8023486
    Abstract: The present invention is directed to a multicell joint detection method, it deals against the interference between same frequency neighboring cell's signals in slotted CDMA system, and provides a joint detection method based on the multicell structure information. The method includes the steps of: using channel estimation of multi-set of codes to obtain channel estimation results of each neighboring cell; grouping each neighboring cell's code channel, including grouping based on the code channel's cell, grouping based on the code channnel's power or amplitude intensity, grouping based on the code channel's pertinence, and mixed grouping based on the above methods; making use of the channel estimation result and the result of code channel grouping to process the joint detection and output the detection data. This method makes full use of the structure information of each multicells signal, and efficiently restrains the multiple-access interference of the same frequency neighboring cell.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: September 20, 2011
    Assignee: China Academy of Telecommunications Technology
    Inventors: Yingmin Wang, Nan Zhong, Shiyan Ren, Ning Liu
  • Patent number: 7978624
    Abstract: The present invention discloses a method for suppressing cross-slot interference in a time-slotted CDMA system. The method includes: determining, by a base station, positions of cross slots according to configuration information of local cell and configuration information of co-frequency adjacent cells, and performing multi-cell channel estimation on the cross slots to obtain channel estimation results; determining, by the base station, code channel configuration information of the co-frequency adjacent cells, grouping the determined code channels and determining the code channels of the co-frequency adjacent cells involved in a joint detection; and performing, by the base station, the joint detection according to the multi-cell information estimation results and the determined code channels of the base stations involved in the joint detection to obtain detection data.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: July 12, 2011
    Assignee: China Academy of Telecommunications Technology
    Inventors: Yingmin Wang, Shiyan Ren, Jinling Hu
  • Publication number: 20100284319
    Abstract: The present invention discloses a MBMS dedicated carrier configuration method, including: at least one of MBMS dedicated carriers in a cell is chose and assigned MBMS control information of all MBMS dedicated carriers and MBMS system information; and frequency information and scrambling code group ID information of at least one MBMS dedicated carriers assigned bundling information is assigned to conventional service carriers in the cell. The present invention also discloses a device for realizing said method and a MBMS transmission method based on dedicated carriers assigned the bundling information. The present invention realizes MBMS bundling on the dedicated carriers, and UE can receive services by directly sensing the carriers bearing control signaling, and thus it can reduce meaningless switching sense by the UE and save power.
    Type: Application
    Filed: April 24, 2008
    Publication date: November 11, 2010
    Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Xuelong Wang, Yu Ding, Lei Mao, Shiyan Ren
  • Publication number: 20100278090
    Abstract: An access method of MBMS on dedicated carrier relates to MBMS access technology on dedicated carrier, including: synchronize a user equipment to a MBMS dedicated carrier; the user equipment detects a start-frame of system message on the MBMS dedicated carrier; and the terminal monitors the system message from the start-frame of system message. An apparatus of realizing the method is also provided.
    Type: Application
    Filed: September 18, 2008
    Publication date: November 4, 2010
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Shiyan Ren, Yu Ding, Lei Mao
  • Publication number: 20100173578
    Abstract: A method for searching for a broadcast/multicast single frequency network cluster, when a terminal needs to receive the broadcast/multicast service in the broadcast/multicast single frequency network cluster, the terminal synchronizes to a non broadcast/multicast single frequency network cell which is associated with the broadcast/multicast single frequency network cluster; and the terminal searches for the broadcast/multicast single frequency network cluster on the basis of the information indicated by the system information in the non broadcast/multicast single frequency network cell. So that the UE can search for the corresponding MBSFN cluster, and can receive the MBMS service in the searched MBSFN cluster.
    Type: Application
    Filed: July 18, 2008
    Publication date: July 8, 2010
    Inventors: Xuelong Wang, Yu Ding, Shiyan Ren, Lei Mao
  • Publication number: 20100103855
    Abstract: A method, system and base station for transmitting MBMS in a single frequency network are provided. The method includes: sending, by an RNC, MBMS data to base stations of the target cells or sectors, distributing the same time and frequency resources, scrambling code and midamble to the cells or sectors to transmit the MBMS data, sending information of the distributed resources, scrambling code and midamble to the base stations and UEs of the target cells or sectors; and rotating, by each of the base stations, the MBMS burst signal to be sent by a random phase, sending the rotated signal to the UE using time and frequency resources distributed by RNC. The system includes an RNC, base stations and a UE, and each of the base stations includes a phase processing module and a signal sending module.
    Type: Application
    Filed: March 20, 2008
    Publication date: April 29, 2010
    Applicant: DATING MOBILE COMMUNICATIONS EQUIPMENT CO., LTD
    Inventors: Yingmin Wang, Yu Ding, Hongyan Xu, Shiyan Ren, Yuemin Cai
  • Publication number: 20090010228
    Abstract: The present invention discloses a method for suppressing cross-slot interference in a time-slotted CDMA system. The method includes: determining, by a base station, positions of cross slots according to configuration information of local cell and configuration information of co-frequency adjacent cells, and performing multi-cell channel estimation on the cross slots to obtain channel estimation results; determining, by the base station, code channel configuration information of the co-frequency adjacent cells, grouping the determined code channels and determining the code channels of the co-frequency adjacent cells involved in a joint detection; and performing, by the base station, the joint detection according to the multi-cell information estimation results and the determined code channels of the base stations involved in the joint detection to obtain detection data.
    Type: Application
    Filed: September 7, 2006
    Publication date: January 8, 2009
    Applicant: Datang Mobile Communications Equipment Co., Ltd.
    Inventors: Yingmin Wang, Shiyan Ren, Jinling Hu
  • Patent number: 7433387
    Abstract: A channel estimation method for multiple code-sets in a time-slotted CDMA system. The method includes: A) performing a single code-set channel estimation of the received signal of each code-set, respectively, to obtain an original channel estimation, and deciding whether the desired number of iterations is reached; if yes, outputting each single code-set channel estimate; otherwise, going to Step B; B) performing limited time decision for the original channel estimates, retaining taps of channel estimation that meet a certain condition, recovering the interference caused by the response of each code-set using the tap values; canceling the interference caused by the response of other code-sets in the received signal of each code-set to obtain a clean signal of each code-set; taking the clean signal of each code-set as the said received signal of each code-set; and returning to Step A.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: October 7, 2008
    Assignee: Da Tang Mobile Communications Equipment Co., Ltd.
    Inventors: Yingmin Wang, Shiyan Ren
  • Publication number: 20080123611
    Abstract: The present invention is directed to a multicell joint detection method, it deals against the interference between same frequency neighbouring cell's signals in slotted CDMA system, and provides a joint detection method based on the multicell structure information. The method includes the steps of: using channel estimation of multi-set of codes to obtain channel estimation results of each neighbouring cell; grouping each neighbouring cell's code channel, including grouping based on the code channel's cell, grouping based on the code channnel's power or amplitude intensity, grouping based on the code channel's pertinence, and mixed grouping based on the above methods; making use of the channel estimationation result and the result of code channel grouping to process the joint detection and output the detection data. This method makes full use of the structure information of each multicells signal, and efficiently restrains the multiple-access interference of the same frequency neighbouring cell.
    Type: Application
    Filed: September 22, 2005
    Publication date: May 29, 2008
    Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Yingmin Wang, Nan Zhong, Shiyan Ren, Ning Liu
  • Publication number: 20050286613
    Abstract: A channel estimation method for multiple code-sets in a time-slotted CDMA system. The method includes: A) performing a single code-set channel estimation of the received signal of each code-set, respectively, to obtain an original channel estimation, and deciding whether the desired number of iterations is reached; if yes, outputting each single code-set channel estimate; otherwise, going to Step B; B) performing limited time decision for the original channel estimates, retaining taps of channel estimation that meet a certain condition, recovering the interference caused by the response of each code-set using the tap values; canceling the interference caused by the response of other code-sets in the received signal of each code-set to obtain a clean signal of each code-set; taking the clean signal of each code-set as the said received signal of each code-set; and returning to Step A.
    Type: Application
    Filed: July 14, 2005
    Publication date: December 29, 2005
    Applicant: Da Tang Mobile Communications Equipment Co., Ltd.
    Inventors: Yingmin Wang, Shiyan Ren