Patents by Inventor Xie Li
Xie Li 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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Publication number: 20240027344Abstract: The disclosure provides a fluorescent sensor, comprising a) a responsive polypeptide, and b) an optically active polypeptide, wherein the optically active polypeptide is inserted into the responsive polypeptide. The present disclosure also relates to a nucleic acid sequence encoding the fluorescent sensor according to any embodiment, or a complementary sequence thereof. The disclosure also provides an expression vector comprising the nucleic acid sequence or a complementary sequence thereof of the disclosure operably linked to an expression control sequence. The disclosure also provides a cell containing the expression vector of the disclosure. The present disclosure also provides a method for preparing the fluorescent sensor of this disclosure, comprising the following steps: providing a host cell comprising an expression vector that expresses the fluorescent sensor of the disclosure, culturing the host cell under conditions suitable for the expression of the host cell, and separating the fluorescent sensor.Type: ApplicationFiled: March 15, 2019Publication date: January 25, 2024Inventors: Yi Yang, Yuzheng Zhao, Xie Li, Yejun Zou, Changcheng Zhang
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Publication number: 20230324373Abstract: Disclosed in the present invention are a pyruvic acid optical probe, a preparation method therefor, and an application thereof. One aspect of the present invention is the disclosure of an optical probe, which includes a pyruvic acid-sensitive polypeptide and an optically active polypeptide, wherein the optically active polypeptide is located within the sequence of the pyruvic acid-sensitive polypeptide. The present invention also discloses a preparation method for the probe and an application of said probe in pyruvic acid measurement.Type: ApplicationFiled: February 9, 2021Publication date: October 12, 2023Applicant: East China University of Science and TechnologyInventors: Yi Yang, Yuzheng Zhao, Xie Li, Zeyi Zhang, Xiuze Zhang, Li Huang
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Publication number: 20230296616Abstract: Provided is an arginine fluorescent probe, comprising a polypeptide B that responds to arginine and a fluorescent protein A that expresses arginine; the fluorescent protein A is inserted into the polypeptide B, B is divided into an upper structural part and a lower structural part, B1 and B2, and a probe structure represented by the formula B1-A-B2 is formed; optimized mutants are likewise obtained by truncation and site-directed mutagenesis at different positions, and specific binding of the polypeptide B and arginine leads to a change in the fluorescence signal of the fluorescent protein A; and the polypeptide B is an arginine binding protein or a mutant thereof.Type: ApplicationFiled: February 9, 2021Publication date: September 21, 2023Applicant: East China University of Science and TechnologyInventors: Yi Yang, Yuzheng Zhao, Rui Li, Yejun Zou, Li Huang, Xie Li, Kun Jiang
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Publication number: 20230296617Abstract: Disclosed is a tryptophan optical probe, a preparation method therefor and the use thereof. Disclosed is an optical probe, comprising a tryptophan-sensitive polypeptide or a functional variant thereof and an optically active polypeptide or a functional variant thereof, wherein the optically active polypeptide or the functional variant thereof is located in the sequence of the tryptophan-sensitive polypeptide or the functional variant thereof. Furthermore, disclosed are a method for preparing the above-mentioned probe and the use thereof in the detection of tryptophan.Type: ApplicationFiled: February 9, 2021Publication date: September 21, 2023Applicant: East China University of Science and TechnologyInventors: Yi Yang, Yuzheng Zhao, Chenxia Zhang, Li Huang, Yejun Zou, Xie Li, Shuning Liu
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Publication number: 20230203506Abstract: An optical probe, comprising a lactic acid-sensitive polypeptide or a functional variant thereof and an optically active polypeptide or a functional variant thereof; the optically active polypeptide or the functional variant thereof is located in the sequence of the lactic acid-sensitive polypeptide or the functional variant thereof. A preparation method for the described probe and an application thereof in the detection of lactic acid.Type: ApplicationFiled: December 21, 2020Publication date: June 29, 2023Applicant: East China University of Science and TechnologyInventors: Yi Yang, Yuzheng Zhao, Xie Li, Xiuze Zhang, Li Huang
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Patent number: 10949780Abstract: Systems and methods for determining an order accepting mode for a target service provider are provided. A method includes receiving a request for determining an order accepting mode for the target service provider. The method also includes obtaining an order accepting evaluation parameter with respect to the target service provider in response to the request. The method also includes determining an order accepting mode for the target service providers based on the order accepting evaluation parameter. The order accepting mode includes at least one of an order designating mode, an order striving mode, or an order quick-accepting mode.Type: GrantFiled: January 17, 2020Date of Patent: March 16, 2021Assignee: BEIJING DIDI INFINITY TECHNOLOGY AND DEVELOPMENT CO., LTD.Inventors: Ning Ma, Xie Li, Wei Zhao, Biao Ma, Tihui Zhang, Xiaoxue Zhang, Cheng Lyu, Chao Guan, Bo Liu, Lin Liu
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Publication number: 20200151632Abstract: Systems and methods for determining an order accepting mode for a target service provider are provided. A method includes receiving a request for determining an order accepting mode for the target service provider. The method also includes obtaining an order accepting evaluation parameter with respect to the target service provider in response to the request. The method also includes determining an order accepting mode for the target service providers based on the order accepting evaluation parameter. The order accepting mode includes at least one of an order designating mode, an order striving mode, or an order quick-accepting mode.Type: ApplicationFiled: January 17, 2020Publication date: May 14, 2020Applicant: BEIJING DIDI INFINITY TECHNOLOGY AND DEVELOPMENT CO., LTD.Inventors: Ning MA, Xie LI, Wei ZHAO, Biao MA, Tihui ZHANG, Xiaoxue ZHANG, Cheng LYU, Chao GUAN, Bo LIU, Lin LIU
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Publication number: 20180101927Abstract: A system includes a memory storing instructions and a processor in communication with the memory. When executing the instructions, the processor may be configured to establish a communication with a mobile device via a network and identify a user identity associated with a user of a service from the mobile device. The processor may be configured to obtain a user profile associated with the user identity and identify a trigger event indicating an intention of the user to initiate a service request for a service from the mobile device. The processor may also be configured to determine, based on the user profile and the trigger event, a promotion associated with the user identity and generate a message relating to the promotion to be sent to the mobile device.Type: ApplicationFiled: December 11, 2017Publication date: April 12, 2018Applicant: BEIJING DIDI INFINITY TECHNOLOGY AND DEVELOPMENT C O., LTD.Inventors: Wei TAN, Ziling WANG, Yang MENG, Kun WANG, Qi SONG, Xie LI, Zhaoxue WU
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Patent number: 9681394Abstract: A method for power control and a user equipment, UE, determine a current power control mode of the UE based on an adjustment trend of the UE with respect to signal transmission power of a base station, and a variation trend of the received signal quality. A target value of the received signal quality of inner-loop power control is reset after the power control mode of the UE tends to normal, so as to return the transmission power of the base station to the UE to a normal level as soon as possible, thereby to inhibit adverse influences caused by the windup effect.Type: GrantFiled: February 28, 2012Date of Patent: June 13, 2017Assignee: Optis Circuit Technology, LLCInventors: Zhen Huang, Xie Li, Wenxue Yang
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Patent number: 9571260Abstract: The embodiment of the invention discloses a channel estimation method for a TD-SCDMA system. The channel estimation method comprises steps of: obtaining a coarse channel estimation of a channel 1 of an intra-frequency cell set by a single cell channel estimation algorithm; performing an interference cancellation on the coarse channel estimation to obtain a channel estimation; determining a channel environment according to the channel estimation; and determining a stop strategy for the interference cancellation according to the channel environment and controlling performing the interference cancellation according to the stop strategy. The embodiment of the invention also discloses a channel estimation apparatus for a TD-SCDMA system, a communication device and a computer program executing the channel estimation method.Type: GrantFiled: September 14, 2011Date of Patent: February 14, 2017Assignee: OPTIS CIRCUIT TECHNOLOGY, LLCInventors: Zhixun Tang, Xie Li, Liping Zhang
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Patent number: 9438462Abstract: The embodiments of the present disclosure disclose a soft bit un-uniform quantization method, apparatus, computer program and storage medium. The soft bit un-uniform quantization method comprises: determining a threshold value; obtaining a quantization step according to the threshold value; obtaining a first data after a QAM demodulating and before a Turbo decoding in a wireless communication system; and performing a soft bit un-uniform quantization on the first data to obtain a quantization result according to the threshold value and the step. According to the present disclosure, the data after the QAM demodulating and before the Turbo decoding may obtain a distinguished Euclidean distance value and thus the performance can be improved greatly.Type: GrantFiled: June 28, 2012Date of Patent: September 6, 2016Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Chao Li, Xie Li, Kun Yin
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Patent number: 9369970Abstract: The embodiment of the invention discloses a method, device and computer program for denoising in channel estimation. The method comprises steps of: calculating a noise power value and a power value of each path in each user window based on a channel estimation result, the user window is referred to channel impulse response window corresponding to this user; calculating a denoising threshold factor based on the noise power value and the power value of each path in each user window; calculating a denoising threshold value based on the noise power value and the denoising threshold factor; and performing a denoising processing on the channel estimation result by using the denoising threshold value.Type: GrantFiled: September 14, 2011Date of Patent: June 14, 2016Assignee: ST-ERICSSON SAInventors: Zhixun Tang, Xie Li, Liping Zhang
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Patent number: 9287924Abstract: A method, apparatus, receiver, computer program and storage medium for joint detection are disclosed. The joint detection method includes categorizing interference signals based on level of interference so as to obtain a strong interference signal, cancelling the strong interference signal from a received signal, and performing a joint detection by utilizing a matched filtering result of a remaining signal.Type: GrantFiled: September 20, 2011Date of Patent: March 15, 2016Assignee: ST-ERICSSON SAInventors: Zhixun Tang, Xie Li, Liping Zhang, Daijun Zhang
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Publication number: 20150249960Abstract: The present invention provides a method for power control, a user equipment, a computer program and a storage medium. Based on an adjustment trend of the UE with respect to signal transmission power of a base station and a variation trend of the received signal quality, a current power control mode of the UE is determined, and then a target value of the received signal quality of inner-loop power control is reset after the power control mode of the UE tends to normal, so as to return the transmission power of the base station to the UE to a normal level as soon as possible, thereby to inhibit adverse influences caused by the windup effect.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: ST-Ericsson SAInventors: Zhen Huang, Xie Li, Wenxue Yang
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Publication number: 20150207658Abstract: The embodiments of the present disclosure disclose a soft bit un-uniform quantization method, apparatus, computer program and storage medium. The soft bit un-uniform quantization method comprises: determining a threshold value; obtaining a quantization step according to the threshold value; obtaining a first data after a QAM demodulating and before a Turbo decoding in a wireless communication system; and performing a soft bit un-uniform quantization on the first data to obtain a quantization result according to the threshold value and the step. According to the present disclosure, the data after the QAM demodulating and before the Turbo decoding may obtain a distinguished Euclidean distance value and thus the performance can be improved greatly.Type: ApplicationFiled: June 28, 2012Publication date: July 23, 2015Inventors: Chao Li, Xie Li, Kun Yin
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Patent number: 9065524Abstract: The present invention relates a method, apparatus, receiver, computer program for joint detection. In the method, it is firstly determined if whether a number of original active codes is beyond a predefined threshold or not, and when the number of the original active codes is beyond the predefined threshold and a strong interference code exists in the active codes corresponding to intra-frequency adjacent cells, it is to apply an interference cancellation to a receive signal, cancel MAI caused by a strong interference signal corresponding to the strong interference code, and perform a joint detection by utilizing a matched filtering result of a remaining signal after the interference cancellation for the joint detection. According to at least one embodiment of the present invention, when there is large interference in the intra-frequency adjacent cells and the number of the active codes is beyond a maximum threshold, the joint detection performance is improved.Type: GrantFiled: October 14, 2011Date of Patent: June 23, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Zhixun Tang, Xie Li, Liping Zhang, Daijun Zhang
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Patent number: 9014236Abstract: A method for performing joint detection includes adjusting a ranking order of codes in a matched filtering result, and a ranking order of column vectors in a system submatrix according to the power. The joint detection is performed using an adjusted matched filtering result and an adjusted system submatrix, and acquires demodulated signals corresponding to the codes. The codes that have high power will be demodulated first. This ensures accuracy of demodulation, inhibits erroneous propagation effect, and improves accuracy of the joint detection.Type: GrantFiled: September 28, 2011Date of Patent: April 21, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Zhixun Tang, Xie Li, Liping Zhang
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Publication number: 20140348136Abstract: A method, apparatus, receiver, computer program and storage medium for joint detection are disclosed. The joint detection method includes categorizing interference signals based on level of interference so as to obtain a strong interference signal, cancelling the strong interference signal from a received signal, and performing a joint detection by utilizing a matched filtering result of a remaining signal.Type: ApplicationFiled: September 20, 2011Publication date: November 27, 2014Applicant: ST-ERICSSON SAInventors: Zhixun Tang, Xie Li, Liping Zhang, Daijun Zhang
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Publication number: 20140294127Abstract: The present invention relates a method, apparatus, receiver, computer program for joint detection. In the method, it is firstly determined if whether a number of original active codes is beyond a predefined threshold or not, and when the number of the original active codes is beyond the predefined threshold and a strong interference code exists in the active codes corresponding to intra-frequency adjacent cells, it is to apply an interference cancellation to a receive signal, cancel MAI caused by a strong interference signal corresponding to the strong interference code, and perform a joint detection by utilizing a matched filtering result of a remaining signal after the interference cancellation for the joint detection. According to at least one embodiment of the present invention, when there is large interference in the intra-frequency adjacent cells and the number of the active codes is beyond a maximum threshold, the joint detection performance is improved.Type: ApplicationFiled: October 14, 2011Publication date: October 2, 2014Applicant: ERICSSON MODEMS SAInventors: Zhixun Tang, Xie Li, Liping Zhang, Daijun Zhang
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Publication number: 20140241403Abstract: A method for performing joint detection includes adjusting a ranking order of codes in a matched filtering result, and a ranking order of column vectors in a system submatrix according to the power. The joint detection is performed using an adjusted matched filtering result and an adjusted system submatrix, and acquires demodulated signals corresponding to the codes. The codes that have high power will be demodulated first. This ensures accuracy of demodulation, inhibits erroneous propagation effect, and improves accuracy of the joint detection.Type: ApplicationFiled: September 28, 2011Publication date: August 28, 2014Applicant: ERICSSON MODEMS SAInventors: Zhixun Tang, Xie Li, Liping Zhang