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).
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Patent number: 9137779Abstract: 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: GrantFiled: April 24, 2008Date of Patent: September 15, 2015Assignee: China Academy of Telecommunications TechnologyInventors: Xuelong Wang, Yu Ding, Lei Mao, Shiyan Ren
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Method, terminal and radio network controller for searching for the single frequency network cluster
Patent number: 8655263Abstract: 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: GrantFiled: July 18, 2008Date of Patent: February 18, 2014Assignee: China Academy of Telecommunications TechnologyInventors: Xuelong Wang, Yu Ding, Shiyan Ren, Lei Mao -
Patent number: 8611461Abstract: 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: GrantFiled: August 13, 2008Date of Patent: December 17, 2013Assignee: China Academy of Telecommunications TechnologyInventors: Yu Ding, Xiaodong Yang, Xunwei Zhao, Shiyan Ren
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Patent number: 8451765Abstract: 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: GrantFiled: March 20, 2008Date of Patent: May 28, 2013Assignee: China Academy of Telecommunications TechnologyInventors: Yingmin Wang, Yu Ding, Hongyan Xu, Shiyan Ren, Yuemin Cai
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Patent number: 8427997Abstract: 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: GrantFiled: September 18, 2008Date of Patent: April 23, 2013Assignee: China Academy of Telecommunications TechnologyInventors: Shiyan Ren, Yu Ding, Lei Mao
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Publication number: 20110280339Abstract: 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: ApplicationFiled: August 13, 2008Publication date: November 17, 2011Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Yu Ding, Xiaodong Yang, Xunwei Zhao, Shiyan Ren
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Patent number: 8023486Abstract: 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: GrantFiled: September 22, 2005Date of Patent: September 20, 2011Assignee: China Academy of Telecommunications TechnologyInventors: Yingmin Wang, Nan Zhong, Shiyan Ren, Ning Liu
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Patent number: 7978624Abstract: 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: GrantFiled: September 7, 2006Date of Patent: July 12, 2011Assignee: China Academy of Telecommunications TechnologyInventors: Yingmin Wang, Shiyan Ren, Jinling Hu
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Publication number: 20100284319Abstract: 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: ApplicationFiled: April 24, 2008Publication date: November 11, 2010Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Xuelong Wang, Yu Ding, Lei Mao, Shiyan Ren
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Publication number: 20100278090Abstract: 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: ApplicationFiled: September 18, 2008Publication date: November 4, 2010Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shiyan Ren, Yu Ding, Lei Mao
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METHOD, TERMINAL AND RADIO NETWORK CONTROLLER FOR SEARCHING FOR THE SINGLE FREQUENCY NETWORK CLUSTER
Publication number: 20100173578Abstract: 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: ApplicationFiled: July 18, 2008Publication date: July 8, 2010Inventors: Xuelong Wang, Yu Ding, Shiyan Ren, Lei Mao -
Publication number: 20100103855Abstract: 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: ApplicationFiled: March 20, 2008Publication date: April 29, 2010Applicant: DATING MOBILE COMMUNICATIONS EQUIPMENT CO., LTDInventors: Yingmin Wang, Yu Ding, Hongyan Xu, Shiyan Ren, Yuemin Cai
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Publication number: 20090010228Abstract: 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: ApplicationFiled: September 7, 2006Publication date: January 8, 2009Applicant: Datang Mobile Communications Equipment Co., Ltd.Inventors: Yingmin Wang, Shiyan Ren, Jinling Hu
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Patent number: 7433387Abstract: 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: GrantFiled: July 14, 2005Date of Patent: October 7, 2008Assignee: Da Tang Mobile Communications Equipment Co., Ltd.Inventors: Yingmin Wang, Shiyan Ren
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Publication number: 20080123611Abstract: 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: ApplicationFiled: September 22, 2005Publication date: May 29, 2008Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Yingmin Wang, Nan Zhong, Shiyan Ren, Ning Liu
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Publication number: 20050286613Abstract: 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: ApplicationFiled: July 14, 2005Publication date: December 29, 2005Applicant: Da Tang Mobile Communications Equipment Co., Ltd.Inventors: Yingmin Wang, Shiyan Ren