Patents by Inventor Qihong Ge
Qihong Ge 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: 11109437Abstract: A method and migration manager component for transferring a first application running on a first computing device from the first computing device to a second computing device, the first application being configured to manage at least one communication connection to at least one terminal device via a base station antenna structure, the method comprising: initializing a second application configured to manage the at least one communication connection to the at least one terminal device via the base station antenna structure; transferring management of the at least one communication connection from the first application to the second application; stopping the execution of the first application at the first computing device; initializing the first application at the second computing device; transferring management of the at least one communication connection from the second application to the first application.Type: GrantFiled: December 22, 2015Date of Patent: August 31, 2021Assignee: Apple Inc.Inventors: Qihong Ge, Chunming Ren
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Publication number: 20180332654Abstract: A method and migration manager component for transferring a first application running on a first computing device from the first computing device to a second computing device, the first application being configured to manage at least one communication connection to at least one terminal device via a base station antenna structure, the method comprising: initializing a second application configured to manage the at least one communication connection to the at least one terminal device via the base station antenna structure; transferring management of the at least one communication connection from the first application to the second application; stopping the execution of the first application at the first computing device; initializing the first application at the second computing device; transferring management of the at least one communication connection from the second application to the first application.Type: ApplicationFiled: December 22, 2015Publication date: November 15, 2018Inventors: Qihong Ge, Chunming Ren
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Patent number: 8576696Abstract: A mobile multimedia broadcast transmission system is provided, which comprises: a Reed-Solomon (RS) coding and byte interleaving unit, a Low Density Parity Check (LDPC) coder, a bit interleaver, a constellation mapping unit, a frequency domain symbol generator, a scrambler, an Inverse Fast Fourier Transform (IFFT) unit, a time domain framing unit, and a transmitter. According to the technical solutions provided in the present invention, the system can provide high-quality mobile multimedia services for users in a 6 MHz operation bandwidth. Furthermore, an optimized selection is performed on RS coding according to the operation bandwidth of the system, thereby selecting an appropriate coding mode according to different channel conditions. Accordingly, the byte interleaver is optimized, such that suitable interleaving parameters can be used to perform byte interleaving.Type: GrantFiled: February 1, 2010Date of Patent: November 5, 2013Assignee: Timi Technologies Co., Ltd.Inventors: Qihong Ge, Dong Bai, Tao Tao, Qiusheng Wang, Wen Chen
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Patent number: 8428160Abstract: The present invention discloses a multi-carrier digital multimedia broadcast system and the digital information transmission method thereof. After RS encoding and byte interleaving, LDPC encoding, bit interleaving and constellation mapping to an upper layer of data streams in turn, the obtained data symbol is multiplexed with scattered pilots and continual pilots which include the system information to form an OFDM frequency domain symbol and scrambled; an OFDM time domain symbol is generated by IFFT transforming, and after inserted with the frame head to build a time slot, it is connected to form a signal frame of the physical layer; the signal frame of the physical layer is transmitted after being low-pass filtered and orthogonal upconverted. The system and method thereof provide wireless broadcast with high quality such as audio, video and multimedia data and the like for mobile, fixed and portable receivers, and can use the satellite transmission and terrestrial transmission method for transmitting.Type: GrantFiled: November 15, 2006Date of Patent: April 23, 2013Assignee: TIMI Technologies Co., Ltd.Inventors: Tao Tao, Dong Bai, Qihong Ge, Huishi Song, Wen Chen, Yibin Liang, Qinghua Yang, Lian Wang, Qun Li, Hongbing Shen
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Patent number: 8351323Abstract: The present invention provides a method for transmitting/receiving a continuous pilot code in a multi-carrier system. The method for transmitting comprises: performing a time-frequency domain two dimensional encoding on an information bit stream to be transmitted; mapping the encoded bit stream to obtain a continuous pilot carrying encoding information; multiplexing a load, a discrete pilot and the mapped continuous pilot carrying the encoding information based on distribution of the load, the discrete pilot and the continuous pilot on a sub-carrier, to generate a frequency domain signal; and performing a frequency-time domain transforming on the generated frequency domain signal, to obtain a time domain sample. The method for receiving comprises: extracting the continuous pilot from an active carrier of a multi-carrier signal; and performing a time-frequency domain decoding on the extracted continuous pilots to obtain the decision of transmitted information bits.Type: GrantFiled: November 14, 2006Date of Patent: January 8, 2013Assignee: TIMI Technologies Co., Ltd.Inventors: Guanbin Xing, Dong Bai, Yibin Liang, Qihong Ge, Wen Chen
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Patent number: 8335963Abstract: The present invention relates to a method for constructing LPDC code check matrix and encoding and decoding devices using the same. The present invention constructs the LDPC code check matrix using an algebraic structure, obtaining the LDPC code with stable performance.Type: GrantFiled: November 16, 2006Date of Patent: December 18, 2012Assignee: Timi Technologies Co., Ltd.Inventors: Dong Bai, Binbin Liu, Tao Tao, Qihong Ge, Wen Chen, Huishi Song, Qun Li, Hongbing Shen, Qinghua Yang
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Publication number: 20120173949Abstract: The embodiments of the present invention provide a method of constructing parity-check matrix of LDPC code. The method comprises the following steps of: constructing a MB×NB base matrix B for an LDPC code with code rate R and code length N, wherein MB=M/K, NB=N/K, M=N (1?R), K is the expansion factor of the base matrix, K??, and ? is the set of the common factors of M and N; and replacing the elements of the base matrix B with a K×K matrix, and expanding the base matrix B into a parity-check matrix H with size of M×N for the encoding or decoding of the LDPC code. An encoding method and apparatus of LDPC code are also provided by the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention can construct LDPC codes with good performance, solve the storage problem of the parity-check matrix, and effectively reduce the implementation complexity of the encoding apparatus.Type: ApplicationFiled: August 11, 2010Publication date: July 5, 2012Applicant: TIMI TECHNOLOGIES CO., LTD.Inventors: Binbin Liu, Dong Bai, Qihong Ge, Tao Tao, Junwei Wang, Wen Chen
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Patent number: 8139622Abstract: A system and method for generating and detecting identifier sequence of a bandwidth-limited transmitter are disclosed, comprising an identifier sequence generating portion and a detection portion. The identifier sequence generating portion comprises: generating a frequency-domain random sequence; generating a frequency-domain orthogonal sequence; performing frequency-domain truncation; performing frequency-time transformation; and performing cycle extension.Type: GrantFiled: November 16, 2006Date of Patent: March 20, 2012Assignee: TIMI Technologies Co., Ltd.Inventors: Junwei Wang, Qihong Ge, Tao Tao, Dong Bai, Wen Chen, Qinghua Yang, Qun Li
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Publication number: 20110299381Abstract: A mobile multimedia broadcast transmission system is provided, which comprises: a Reed-Solomon (RS) coding and byte interleaving unit, a Low Density Parity Check (LDPC) coder, a bit interleaver, a constellation mapping unit, a frequency domain symbol generator, a scrambler, an Inverse Fast Fourier Transform (IFFT) unit, a time domain framing unit, and a transmitter. According to the technical solutions provided in the present invention, the system can provide high-quality mobile multimedia services for users in a 6 MHz operation bandwidth. Furthermore, an optimized selection is performed on RS coding according to the operation bandwidth of the system, thereby selecting an appropriate coding mode according to different channel conditions. Accordingly, the byte interleaver is optimized, such that suitable interleaving parameters can be used to perform byte interleaving.Type: ApplicationFiled: February 1, 2010Publication date: December 8, 2011Applicant: Timi Technologies Co., Ltd.,Inventors: Qihong Ge, Dong Bai, Tao Tao, Qiusheng Wang, Wen Chen
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Publication number: 20110268206Abstract: The present invention relates to the field of communication technology. A channel estimation device for an Orthogonal Frequency Division Multiplexing (OFDM) system is provided for performing channel estimation on data based on synchronization signal and pilot, which comprises: a synchronization signal based initial channel estimation module for performing initial channel estimation based on a synchronization signal in the data; a pilot channel tracking module for performing pilot channel tracking on the result of the initial channel estimation; a noise reduction module for performing noise reduction on the result of the pilot channel tracking; and an effective sub-carrier extraction module for extracting channel estimation values of effective sub-carriers from the result of the noise reduction.Type: ApplicationFiled: December 30, 2009Publication date: November 3, 2011Applicant: Timi Technologies Co., Ltd.Inventors: Qihong Ge, Junwei Wang, Binbin Liu, Dong Bai, Tao Tao
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Publication number: 20110239077Abstract: The present invention relates to a method for constructing LPDC code check matrix and encoding and decoding devices using the same. The encoding device encodes the inputted binary information and outputs the encoded system code sequence of position transformation. The encoding device comprises: a matrix multiplication module outputting a check sequence p which is obtained through the binary information sequence m multiplied with a matrix; a sorting index module having N memory units storing index values of a sorting table IDX in turn; and a sorting output module for sorting the m and p and outputting a code word c based on the index value stored in the sorting index table. The present invention constructs the LDPC code check matrix using an algebraic structure, obtaining the LDPC code with stable performance. In addition, the encoding and decoding devices of the present invention occupy less memory, which is preferable for optimization of the devices.Type: ApplicationFiled: November 16, 2006Publication date: September 29, 2011Inventors: Dong Bai, Binbin Liu, Tao Tao, Qihong Ge, Wen Chen, Huishi Song, Qun Li, Hongbing Shen, Qinghua Yang
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Patent number: 7978593Abstract: A method for transmitting control information to indicate a receiver, comprising following steps: the control information is formed at transmitting side and is encoded based on the working status of the transmitting side of the system; after the encoded control information is mapped, it is multiplexed with other pilot symbol and service load, then an OFDM symbol is generated; the OFDM symbol is transformed from frequency domain to time domain, then a time domain sampling signal is obtained and transmitted to the receiving side of the system; at the receiving side, the time domain sampling signal transmitted by the transmitting side is received and transformed from time domain to frequency domain to form OFDM symbol; the control information is obtained from the valid sub carrier of the OFDM symbol, and the control information is decoded; each work information is extracted form the decoded control information, and the receiving terminal is indicated to execute respective receive process based on the extracted wType: GrantFiled: November 24, 2006Date of Patent: July 12, 2011Assignee: Timi Technologies Co., Ltd.Inventors: Fajun Yan, Tao Tao, Wen Chen, Qihong Ge, Dong Bai, Qinghua Yang
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Publication number: 20110051825Abstract: The present invention discloses a multi-carrier digital multimedia broadcast system and the digital information transmission method thereof. After RS encoding and byte interleaving, LDPC encoding, bit interleaving and constellation mapping to an upper layer of data streams in turn, the obtained data symbol is multiplexed with scattered pilots and continual pilots which include the system information to form an OFDM frequency domain symbol and scrambled; an OFDM time domain symbol is generated by IFFT transforming, and after inserted with the frame head to build a time slot, it is connected to form a signal frame of the physical layer; the signal frame of the physical layer is transmitted after being low-pass filtered and orthogonal upconverted. The system and method thereof provide wireless broadcast with high quality such as audio, video and multimedia data and the like for mobile, fixed and portable receivers, and can use the satellite transmission and terrestrial transmission method for transmitting.Type: ApplicationFiled: November 15, 2006Publication date: March 3, 2011Inventors: Tao Tao, Dong Bai, Qihong Ge, Wen Chen, Yibin Liang, Qinghua Yang, Lian Wang, Qun Li, Hongbing Shen
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Publication number: 20110044390Abstract: A system and method for generating and detecting identifier sequence of a bandwidth-limited transmitter are disclosed, comprising an identifier sequence generating portion and a detection portion. The identifier sequence generating portion comprises: generating a frequency-domain random sequence; generating a frequency-domain orthogonal sequence; performing frequency-domain truncation; performing frequency-time transformation; and performing cycle extension.Type: ApplicationFiled: November 16, 2006Publication date: February 24, 2011Inventors: Junwei Wang, Qihong Ge, Tao Tao, Dong Bai, Wen Chen, Qinghua Yang, Qun Li
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Publication number: 20100027695Abstract: A method for transmitting control information to indicate a receiver, comprising following steps: the control information is formed at transmitting side and is encoded based on the working status of the transmitting side of the system; after the encoded control information is mapped, it is multiplexed with other pilot symbol and service load, then an OFDM symbol is generated; the OFDM symbol is transformed from frequency domain to time domain, then a time domain sampling signal is obtained and transmitted to the receiving side of the system; at the receiving side, the time domain sampling signal transmitted by the transmitting side is received and transformed from time domain to frequency domain to form OFDM symbol; the control information is obtained from the valid sub carrier of the OFDM symbol, and the control information is decoded; each work information is extracted form the decoded control information, and the receiving terminal is indicated to execute respective receive process based on the extracted wType: ApplicationFiled: November 24, 2006Publication date: February 4, 2010Inventors: Fajun Yan, Tao Tao, Wen Chen, Qihong Ge, Dong Bai, Qinghua Yang
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Publication number: 20090097396Abstract: The present invention provides a method for transmitting/receiving a continuous pilot code in a multi-carrier system. The method for transmitting comprises: performing a time-frequency domain two dimensional encoding on an information bit stream to be transmitted; mapping the encoded bit stream to obtain a continuous pilot carrying encoding information; multiplexing a load, a discrete pilot and the mapped continuous pilot carrying the encoding information based on distribution of the load, the discrete pilot and the continuous pilot on a sub-carrier, to generate a frequency domain signal; and performing a frequency-time domain transforming on the generated frequency domain signal, to obtain a time domain sample. The method for receiving comprises: extracting the continuous pilot from an active carrier of a multi-carrier signal; and performing a time-frequency domain decoding on the extracted continuous pilots to obtain the decision of transmitted information bits.Type: ApplicationFiled: November 14, 2006Publication date: April 16, 2009Inventors: Guanbin Xing, Dong Bai, Yibin Liang, Qihong Ge, Wen Chen