Patents by Inventor Gaojin Wu
Gaojin Wu 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: 11743909Abstract: In the examples described herein, a user equipment (UE) may identify multiple carriers configured for communications with a base station, and the UE may group the carriers into one or more preferred groups for synchronized scheduling at the base station. The preferred groups of carriers for synchronized scheduling may represent a recommendation that carriers within a preferred group are to be scheduled for communications with the base station on at least partially overlapping resources to maximize power savings at the UE. The UE may transmit an indication of the preferred groups of carriers to the base station, and the base station may identify an actual group of carriers for synchronized scheduling based on the indication received from the UE. The base station may then schedule communications with the UE based on the actual group of carriers.Type: GrantFiled: August 20, 2019Date of Patent: August 29, 2023Assignee: QUALCOMM INCORPORATEDInventors: Peter Pui Lok Ang, Gaojin Wu, Jafar Mohseni, Huilin Xu, Linhai He
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Patent number: 11533128Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching control channels using polar codes. An exemplary method generally includes encoding a stream of bits using a polar code, determining a size of a circular buffer for storing the encoded stream of bits based, at least in part, on a minimum supported code rate and a control information size, and performing rate-matching on stored encoded stream of bits based, at least in part, on a mother code size, N, and a number of coded bits for transmission, E.Type: GrantFiled: January 8, 2018Date of Patent: December 20, 2022Assignee: QUALCOMM IncorporatedInventors: Changlong Xu, Chao Wei, Jing Jiang, Gaojin Wu, Hari Sankar, Jilei Hou
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Patent number: 11394491Abstract: Aspects of the disclosure relate to wireless communication devices configured to generate polar codewords utilizing a single master sequence constructed using density evolution with a nested structure for identifying the frozen bit locations and information bit locations. This single master sequence may be used for any codeword length N up to a maximum codeword length Nmax, and may further be utilized for any code rate R. For example, from the master sequence of length Nmax, a bit location sequence S with codeword length N (where N<Nmax) may be obtained by selecting the bit locations (indexes) in the master sequence corresponding to each bit location in S in the order provided in the master sequence.Type: GrantFiled: July 6, 2017Date of Patent: July 19, 2022Assignee: QUALCOMM IncorporatedInventors: Changlong Xu, Gaojin Wu, Thomas Richardson, Jilei Hou
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Patent number: 11233530Abstract: Wireless communication devices are adapted to facilitate information sequences included in frozen sub-channels of polar coded transmissions. According to one example, an apparatus can generate a mask sequence based on a plurality of parameters, including at least one of a transmitting-device-specific sequence or a receiving-device-specific sequence. In some examples, the frozen bits may be masked with the mask sequence, and an information block may be encoded utilizing polar coding. In other examples, the mask sequence may be compared to the frozen bits of a received information block, and the received information block may be determined as intended for the apparatus when the mask sequence matches to the frozen bits. Other aspects, embodiments, and features are also included.Type: GrantFiled: June 29, 2017Date of Patent: January 25, 2022Assignee: QUALCOMM IncorporatedInventors: Gaojin Wu, Chao Wei, Jing Jiang
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Publication number: 20210314994Abstract: In the examples described herein, a user equipment (UE) may identify multiple carriers configured for communications with a base station, and the UE may group the carriers into one or more preferred groups for synchronized scheduling at the base station. The preferred groups of carriers for synchronized scheduling may represent a recommendation that carriers within a preferred group are to be scheduled for communications with the base station on at least partially overlapping resources to maximize power savings at the UE. The UE may transmit an indication of the preferred groups of carriers to the base station, and the base station may identify an actual group of carriers for synchronized scheduling based on the indication received from the UE. The base station may then schedule communications with the UE based on the actual group of carriers.Type: ApplicationFiled: August 20, 2019Publication date: October 7, 2021Inventors: Peter Pui Lok ANG, Gaojin WU, Jafar MOHSENI, Huilin XU, Linhai HE
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Patent number: 11063613Abstract: Techniques are described herein to terminate a list decoding operation before its completion based on performing one or more error check processes. A transmitted codeword encoded using a polar code may include one or more error check vectors interspersed with one or more information vectors. Upon receiving the codeword, a decoder may perform a list decoding operation on the received codeword. Upon decoding one of the error check vectors, the decoder may determine whether at least one candidate path used in the successive cancellation list decoding operation passes an error check process based on the error check vector. If no candidate paths satisfy the error check process, the decoder may terminate the list decoding operation. In some examples, the decoder may recheck whether candidate paths satisfy the error check operation at intermediate positions between error check vectors. Such rechecking may occur while decoding information vectors.Type: GrantFiled: May 15, 2017Date of Patent: July 13, 2021Assignee: QUALCOMM INCORPORATEDInventors: Gabi Sarkis, Hari Sankar, Gaojin Wu, Changlong Xu, Jing Jiang, Huang Lou
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Publication number: 20210152191Abstract: Techniques are described herein to terminate a list decoding operation before its completion based on performing one or more error check processes. A transmitted codeword encoded using a polar code may include one or more error check vectors interspersed with one or more information vectors. Upon receiving the codeword, a decoder may perform a list decoding operation on the received codeword. Upon decoding one of the error check vectors, the decoder may determine whether at least one candidate path used in the successive cancellation list decoding operation passes an error check process based on the error check vector. If no candidate paths satisfy the error check process, the decoder may terminate the list decoding operation. In some examples, the decoder may recheck whether candidate paths satisfy the error check operation at intermediate positions between error check vectors. Such rechecking may occur while decoding information vectors.Type: ApplicationFiled: May 15, 2017Publication date: May 20, 2021Inventors: Gabi Sarkis, Hari Sankar, Gaojin Wu, Changlong Xu, Jing Jiang, Huang Lou
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Publication number: 20200195276Abstract: Wireless communication devices are adapted to facilitate information sequences included in frozen sub-channels of polar coded transmissions. According to one example, an apparatus can generate a mask sequence based on a plurality of parameters, including at least one of a transmitting-device-specific sequence or a receiving-device-specific sequence. In some examples, the frozen bits may be masked with the mask sequence, and an information block may be encoded utilizing polar coding. In other examples, the mask sequence may be compared to the frozen bits of a received information block, and the received information block may be determined as intended for the apparatus when the mask sequence matches to the frozen bits. Other aspects, embodiments, and features are also included.Type: ApplicationFiled: June 29, 2017Publication date: June 18, 2020Inventors: Gaojin WU, Chao WEI, Jing JIANG
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Publication number: 20200083987Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching control channels using polar codes. An exemplary method generally includes encoding a stream of bits using a polar code, determining a size of a circular buffer for storing the encoded stream of bits based, at least in part, on a minimum supported code rate and a control information size, and performing rate-matching on stored encoded stream of bits based, at least in part, on a mother code size, N, and a number of coded bits for transmission, E.Type: ApplicationFiled: January 8, 2018Publication date: March 12, 2020Inventors: Changlong XU, Chao WEI, Jing JIANG, Gaojin WU, Hari SANKAR, Jilei HOU
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Publication number: 20190372713Abstract: Aspects of the disclosure relate to wireless communication devices configured to generate polar codewords utilizing a single master sequence constructed using density evolution with a nested structure for identifying the frozen bit locations and information bit locations. This single master sequence may be used for any codeword length N up to a maximum codeword length Nmax, and may further be utilized for any code rate R. For example, from the master sequence of length Nmax, a bit location sequence S with codeword length N (where N<Nmax) may be obtained by selecting the bit locations (indexes) in the master sequence corresponding to each bit location in S in the order provided in the master sequence.Type: ApplicationFiled: July 6, 2017Publication date: December 5, 2019Inventors: Changlong XU, Gaojin WU, Thomas RICHARDSON, Jiiei HOU
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Patent number: 9363777Abstract: The present invention provides methods, apparatuses and a program relating to fast recovering for network listening schemes in synchronization over air for small cells. The present invention includes tracking, at a first base station, a reference signal of a second base station, determining, whether the reference signal can be tracked, if it is determined that the reference signal can be tracked, adjusting, at the first base station, a system clock of the first base station based on the reference signal of the second base station, and estimating and storing parameters relating to a frequency difference between the system clock of the first base station and a system clock of the second base station, and if it is determined that the reference signal cannot be reliably tracked, adjusting the system clock of the first base station based on the stored parameters.Type: GrantFiled: June 14, 2012Date of Patent: June 7, 2016Assignee: Nokia Solutions and Networks OyInventors: Gaojin Wu, Yi Wu, Xingchen Guo
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Publication number: 20150173033Abstract: The present invention provides methods, apparatuses and a program relating to fast recovering for network listening schemes in synchronization over air for small cells. The present invention includes tracking, at a first base station, a reference signal of a second base station, determining, whether the reference signal can be tracked, if it is determined that the reference signal can be tracked, adjusting, at the first base station, a system clock of the first base station based on the reference signal of the second base station, and estimating and storing parameters relating to a frequency difference between the system clock of the first base station and a system clock of the second base station, and if it is determined that the reference signal cannot be reliably tracked, adjusting the system clock of the first base station based on the stored parameters.Type: ApplicationFiled: June 14, 2012Publication date: June 18, 2015Inventors: Gaojin Wu, Yi Wu, Xingchen Guo