Patents by Inventor Chunli Liang

Chunli Liang 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: 20120300711
    Abstract: The disclosure provides a method and system for signaling configuration of a Physical Uplink Shared Channel (PUSCH), the system comprises a base station and a target User Equipment (UE). The method comprises: a base station sends Downlink Control Information (DCI) to the target user equipment through a Physical Downlink Control Channel (PUCCH); and the downlink control information includes orthogonal cover code information and/or cyclic shift information for scheduling the physical uplink shared channel in the multi-antenna port transmission and/or single antenna port transmission. It is very adaptable and flexible to use the combination of multiple kinds of information to indicate the orthogonal cover code information in the downlink control information. The UE can obtain the orthogonal cover code information accurately, and the reliability of services can be improved.
    Type: Application
    Filed: June 30, 2010
    Publication date: November 29, 2012
    Applicant: ZTE CORPORATION
    Inventors: Yuxin Wang, Peng Hao, Bo Dai, Chunli Liang, Bin Yu, Peng Zhu
  • Publication number: 20120250648
    Abstract: The present invention provides a method and apparatus for sending a Physical Uplink Control Channel (PUCCH), which includes: performing a joint coding and modulation processing on Acknowledgement/Negative Acknowledgement (ACK/NACK) information which is required to be sent simultaneously with Channel Status Information (CSI) information, and sending the modulated information to a base station by using the second pilot symbol of each slot of a plurality of orthogonal PUCCH resources. The present invention acquires a coding gain by the joint coding of the ACK/NACK information and makes the minimum Hamming distance extend, thereby enhancing the feedback quality of ACK/NACK.
    Type: Application
    Filed: June 24, 2010
    Publication date: October 4, 2012
    Applicant: ZTE CORPORATION
    Inventors: Shuqiang Xia, Dezhong Mi, Zhisong Zuo, Chunli Liang, Weiwei Yang
  • Publication number: 20120236767
    Abstract: A power control method for a Physical Uplink Control Channel, which includes: when the response information of multiple Physical Downlink Shared Channels (PDSCH) sent by a base station over multiple component carriers is sent on one Physical Uplink Control Channel (PUCCH), the base station indicating a unified transmitted power control command for the Physical Uplink Control Channel; or the base station indicating multiple transmitted power control commands for the Physical Uplink Control Channel. The present invention also provides a base station and a user equipment.
    Type: Application
    Filed: June 30, 2010
    Publication date: September 20, 2012
    Inventors: Peng Zhu, Peng Hao, Chunli Liang, Bin Yu, Weiwei Yang
  • Publication number: 20120218881
    Abstract: The present invention discloses a method and system for feeding back an acknowledgement/negative-acknowledgement response message on a physical uplink control channel. The method includes: sending, by a user equipment, an acknowledgement/negative-acknowledgement response message by adopting a manner based on a channel selection or based on a DFT-s-OFDM in a multiplexing mode according to a feedback manner or a feedback rule in the multiplexing mode configured by a base station. In the present invention, the base station can configure for the user equipment and directly indicate to the user equipment through the higher layer signaling the feedback manner in the multiplexing mode, and can also configure the feedback rule in the multiplexing mode for the user equipment; and the user equipment determines the feedback manner in the multiplexing mode according to the feedback manner or feedback rule configured by the base station.
    Type: Application
    Filed: February 11, 2011
    Publication date: August 30, 2012
    Applicant: ZTE CORPORATION
    Inventors: Chunli Liang, Bo Dai, Peng Hao, Yuqiang Zhang
  • Publication number: 20120201212
    Abstract: The present invention discloses a method for transmitting uplink control signaling in a Physical Uplink Shared Channel (PUSCH). The method includes: when two transport blocks/codewords are transmitted in the PUSCH, mapping uplink control signaling to the layer corresponding to one of the two transport blocks/codewords to transmit. The present invention also discloses an apparatus for transmitting uplink control signaling in the PUSCH. The apparatus includes: a mapping unit, used for mapping uplink control signaling to the layer corresponding to one of two transport blocks/codewords when the two transport blocks/codewords are transmitted in the PUSCH; and a transmission unit, used for transmitting the uplink control signaling. The present invention effectively solves the problem of transmitting uplink control signaling in the PUSCH when the PUSCH uses spatial multiplexing in an LTE-A system.
    Type: Application
    Filed: June 25, 2010
    Publication date: August 9, 2012
    Applicant: ZTE CORPORATION
    Inventors: Shuqiang Xia, Weiwei Yang, Chunli Liang, Bo Dai, Jun Xu
  • Publication number: 20110188414
    Abstract: A signal transmission method in a Time Division Duplex (TDD) system is disclosed. The method comprises following steps: within a time length of a half-frame of a radio frame, base station transmits signal on a downlink special time slot, thereafter does not transmit signal on a Guard Period (GP), and then receives signal on an uplink special time slot; all time lengths of other uplink or downlink normal time slots for transmitting signal are equal; the total time length of the downlink special time slot, the guard period and the uplink special time slot is integer times of the time length of an uplink or downlink normal time slot. In addition, a frame structure adopted in the TDD system which corresponds to the method is disclosed.
    Type: Application
    Filed: October 23, 2008
    Publication date: August 4, 2011
    Applicant: ZTE Corporation
    Inventors: Bo Dai, Shuqiang Xia, Peng Hao, Chunli Liang, Guanghui Yu, Liujun Hu, Bin Yu
  • Publication number: 20110170462
    Abstract: The present invention provides a method for determining the number of random access channels which is applied to a time division duplex system. The method comprises: a terminal determining configuration parameters related to the number of the random access channels in an UpPTS based on system configuration, said configuration parameters including the number of downlink-to-uplink switch-points in one radio frame NSP, the density of PRACHs in a random access configuration DRA, a system frame number of a system frame in which said UpPTS is located nf, and a version index corresponding to a PRACH configuration index rRA; and said terminal then calculating directly the number of the PRACHs in said UpPTS based on the configuration parameters. The present invention also provides a method for sending a SRS of a time division duplex system using the method for determining the number of the random access channels.
    Type: Application
    Filed: August 5, 2009
    Publication date: July 14, 2011
    Applicant: ZTE CORPORATION
    Inventors: Peng Hao, Bo Dai, Chunli Liang, Bin Yu
  • Publication number: 20110164604
    Abstract: The method for controlling signal transmission comprises: determining the first reference variable according to the number of transition points from downlink to uplink in a wireless frame of the system and the system frame number (S502); determining the second reference variable according to the number of transition points from downlink to uplink in a wireless frame and the time slot number (S504); determining the third reference variable according to the sub-frame offset of the signal (S506); and determining signal transmission times according to the first reference variable, the second reference variable and the third reference variable, so as to control the signal transmission (S508).
    Type: Application
    Filed: May 15, 2009
    Publication date: July 7, 2011
    Applicant: ZTE CORPORATION
    Inventors: Peng Hao, Chunli Liang, Bo Dai, Bin Yu
  • Publication number: 20110149717
    Abstract: The present invention discloses an information multiplexing method, comprising: coding multiple feedback information according to number of the feedback information and a linear block code sequence, and truncating corresponding coded information according to a target length of the feedback information coded (S302); dividing the truncated coded information into multiple feedback information logic units sequentially, and multiplexing together the multiple feedback information logic units, multiple rank indication information logic units, multiple control information logic units and data information logic units are; wherein the control information logic units, the multiple rank indication information logic units, the data information logic units, and the feedback information logic units contain the same bit number (S304). Transmission of more than two ACK/NACKs is achieved by the present invention and transmission performance of the system is improved.
    Type: Application
    Filed: January 21, 2009
    Publication date: June 23, 2011
    Applicant: ZTE CORPORATION
    Inventors: Bo Dai, Peng Hao, Chunli Liang, Guanghui Yu, Yuqiang Zhang
  • Publication number: 20110134860
    Abstract: The present invention discloses a method and an apparatus for sending rank indication (RI) information, and a method and an apparatus for receiving RI information, wherein the method for sending the RI information includes: carrying the RI information on a physical uplink control channel (PUCCH) for transmitting scheduling request (SR) information when the RI information and the SR information are sent within a same subframe, and sending the RI information and the SR information by using the PUCCH for transmitting SR information. According to the present invention, the problem that the orthogonality of codes between PUCCHs is destroyed due to that the RI information and the SR information are sent within a same subframe is solved, the overall system performance thereby can be guaranteed.
    Type: Application
    Filed: July 3, 2009
    Publication date: June 9, 2011
    Applicant: ZTE CORPORATION
    Inventors: Bo Dai, Chunli Liang, Peng Hao, Shuqiang Xia, Guanghui yu
  • Publication number: 20110129033
    Abstract: The present invention discloses a method and apparatus for transmitting rank indication information, in which the method comprises: when rank indication information and a sounding reference signal are transmitted in a same sub-frame, loading the sounding reference signal to a last symbol of a sub-frame, and transmitting the rank indication information and the sounding reference signal. The present invention prevents destruction of orthogonality of codes between PUCCH channels when the rank indication information and the sounding reference signal are transmitted in the same sub-frame, thus the overall performance of the system can be ensured.
    Type: Application
    Filed: July 3, 2009
    Publication date: June 2, 2011
    Applicant: ZTE CORPORATION
    Inventors: Bo Dai, Shuqiang Xia, Chunli Liang, Peng Hao, Guanghui Yu
  • Publication number: 20110103272
    Abstract: The present invention provides a method for transmitting a PDCCH (physical downlink control channel) signal, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k, 2 symbols are fixedly used to transmit the physical downlink control channel, wherein k is a natural number. The present invention further provides another method for transmitting a PDCCH signal. In a TDD Long Term Evolution system, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k and the uplink/downlink switching period is 10 ms, the transmitting end selects 2, 3 or 4 symbols to transmit the PDCCH signal in subframe 6. With the transmission method of the PDCCH signal provided in the present invention, the utilization efficiency of the system resources and the transmission performance of PDCCH can be improved.
    Type: Application
    Filed: December 10, 2008
    Publication date: May 5, 2011
    Inventors: Bo Dai, Peng Hao, Shuqiang Xia, Guanghui Yu, Chunli Liang
  • Publication number: 20110096702
    Abstract: A method for sending a physical broadcast channel in the TDD system is disclosed, which is: a signal of a physical broadcast channel is not sent in a pilot position, and the signal of the physical broadcast channel is sent on 4 OFDM symbols of the first subframe of one radio frame. Through the present invention, the extension requirement of the physical broadcast channel capacity in the TDD can be met, and the system complexity is reduced due to the normal cyclic prefix and extended prefix using the same sending method.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 28, 2011
    Applicant: ZTE CORPORATION
    Inventors: Bo Dai, Shuqiang Xia, Chunli Liang, Peng Hao, Guanghui Yu, Liujun Hu, Bin Yu
  • Publication number: 20110090863
    Abstract: The present invention discloses a method for mapping physical random access channels, which comprises the following steps: the PRACHs in the same time domain location are mapped from low frequency to high frequency, or from high frequency to low frequency in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap; or the PRACHs in the same time domain location are mapped from two sides to the middle in usable frequency resource, wherein one PRACH occupies 6 resource blocks, and the frequency bands occupied by two adjacent PRACHs in the frequency domain do not overlap. The present invention enables uniformly distributing the PRACHs which require to be processed by the same base station in the time domain, and decreasing the inter-cell interference of the second type PRACH to the utmost extent at the same time.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 21, 2011
    Applicant: ZTE Corporation
    Inventors: Peng Hao, Bin Yu, Shuqiang Xia, Chunli Liang, Bo Dai
  • Publication number: 20110090862
    Abstract: A method wherein: a base station assigns resource to an uplink channel sounding reference signal (SRS) of a UE, sends the SRS configuration parameters to the UE, wherein the SRS configuration parameters include SRS bandwidth parameter BSRS and an SRS frequency domain position parameter nRRC; after receiving the SRS configuration parameters, the UE calculates the frequency domain starting position of the SRS of the resource used for sending the SRS according to the SRS configuration parameters, and sends the SRS to the base station using the resource; wherein the frequency domain resource assigned to the SRS by the base station corresponds to a node of a tree structure configured by an SRS bandwidth, and the configured BSRS corresponds to the level on which the node is located, while the configured nRRC corresponds to the index of a branch node on the lowest level of the node in the tree structure.
    Type: Application
    Filed: July 10, 2009
    Publication date: April 21, 2011
    Inventors: Chunli Liang, Peng Hao, Shuqiang Xia, Bo Cai
  • Publication number: 20110032926
    Abstract: A method for interference randomization of physical uplink control channel (PUCCH), which is used in long term evolution (LTE) system, when multiple terminals multiplex PUCCH to transmit uplink control signallings, the difference of index of control channel resource used by any two terminals in the first timeslot of PUCCH is different from the difference of index of control channel resource used by the two terminals in the second timeslot of PUCCH. The invention can realize interference randomization between UEs that multiplex the same PUCCH.
    Type: Application
    Filed: December 5, 2008
    Publication date: February 10, 2011
    Applicant: ZTE CORPORATION
    Inventors: Shuqiang Xia, Chunli Liang, Bo Dai, Peng Hao
  • Publication number: 20110026444
    Abstract: A method for feeding back confirmation information on a physical uplink shared channel, this method includes: an eNodeB carries, in downlink control information, a number value of the downlink sub-frame corresponding to the confirmation information which is fed back by one uplink sub-frame, and transmits data on a plurality of continuous downlink sub-frames after the sub-frame carrying the downlink control information (S202), wherein the number of the downlink sub-frames which transmit the data is equal to an number of the downlink sub-frames corresponding to the confirmation information fed back by the one uplink sub-frame; after the user equipment receives the downlink sub-frame which carries the downlink control information, the data is received from the downlink sub-frame which transmits the data after this downlink sub-frame, and the confirmation information received is fed back to the eNodeB through a physical uplink shared channel through an uplink sub-frame (S204).
    Type: Application
    Filed: October 15, 2010
    Publication date: February 3, 2011
    Inventors: Bo Dai, Guanghui Yu, Shuqiang Xia, Peng Hao, Chunli Liang
  • Publication number: 20110026445
    Abstract: The present invention discloses a method for configuring and indicating physical random access channel parameter in a time division duplex system, suitable for the long term evolution, system, including: the same PRACH configuration set is stored in a base station and a terminal respectively; when performing a PRACH configuration, the terminal inquires the PRACH configuration set according to configuration information to obtain a configuration parameter, and/or the terminal computes to obtain the configuration parameter according to a system parameter. Set by using the method provided by the present invention, the PRACH configuration set can provide enough density types for various PRACH formats in order to meet the requirements of different system loads, and meanwhile can provide enough version types for each combination of format and density, decrease the processing load of the base station, and reduce the inter-cell interference.
    Type: Application
    Filed: January 21, 2009
    Publication date: February 3, 2011
    Applicant: ZTE CORPORATION
    Inventors: Peng Hao, Shuqiang Xia, Chunli Liang, Bo Dai, Bin Yu
  • Publication number: 20110021227
    Abstract: A method for indicating an uplink resource is provided, including that: when a base station side transmits an uplink resource indication signaling in a downlink subframe, an uplink subframe indication signaling corresponding to the uplink resource indication signaling being transmitted together; and the uplink subframe indication signaling is used for indicating an uplink subframe used by a user side to transmit data according to the uplink resource indication signaling. A system for implementing the method is also provided, which can distinguish a resource indication signaling corresponding to different uplink subframes in the same downlink subframe, and avoid that all the users of different uplink subframes transmit the data in the same resource of the same uplink frame, thereby avoiding mutual interference between the users of the uplink subframes, ensuring system performance and resulting in less signaling overhead.
    Type: Application
    Filed: March 16, 2009
    Publication date: January 27, 2011
    Applicant: ZTE Corporation
    Inventors: Bo Dai, Shuqiang Xia, Bin Yu, Chunli Liang, Peng Hao
  • Publication number: 20110019752
    Abstract: A method for mapping physical random access channel (PRACHs) is provided in the present invention, wherein W PRACHs have the same time domain location and the serial number of each PRACH is w=0, 1, 2, . . . , W?1. The method includes: mapping the PRACHs with the odd w numbers from high frequency to low frequency, or from low frequency to high frequency in a usable frequency band, mapping the PRACHs with the even w numbers from low frequency to high frequency, or from high frequency to low frequency in the usable frequency band. One PRACH occupies 6 continuous resource blocks in the frequency domain, and the frequency bands occupied by the two adjacent PRACHs in the frequency domain do not overlap, furthermore the same mapping process is used for each version number r.
    Type: Application
    Filed: February 12, 2009
    Publication date: January 27, 2011
    Applicant: ZTE CORPORATION
    Inventors: Peng Hao, Shuqiang Xia, Chunli Liang, Bo Dai, Bin Yu