Patents by Inventor Xinxi Diao
Xinxi Diao 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: 9638804Abstract: Disclosed is a method for transmitting pseudolite system messages, the method including: pseudolite sends pseudolite node parameters of the pseudolite to which a positioning system messages broadcast channel belongs, and pseudolite node parameters of the pseudolite adjacent or nearby to the pseudolite to which the positioning system messages broadcast channel belongs, in the configured positioning system messages broadcast channel. A method for transmitting indication message of the positioning system messages broadcast channel is also disclosed in the present invention, the method including: a wireless access point sends an indication message of the positioning system messages broadcast channel of the pseudolite to a radio positioning terminal in its service area.Type: GrantFiled: September 16, 2013Date of Patent: May 2, 2017Assignee: ZTE CORPORATIONInventors: Xinxi Diao, Yiqing Cao, Zhifeng Ma, Linhui Wei, Qun Li
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Publication number: 20150301184Abstract: Disclosed is a method for transmitting pseudolite system messages, the method including: pseudolite sends pseudolite node parameters of the pseudolite to which a positioning system messages broadcast channel belongs, and pseudolite node parameters of the pseudolite adjacent or nearby to the pseudolite to which the positioning system messages broadcast channel belongs, in the configured positioning system messages broadcast channel. A method for transmitting indication message of the positioning system messages broadcast channel is also disclosed in the present invention, the method including: a wireless access point sends an indication message of the positioning system messages broadcast channel of the pseudolite to a radio positioning terminal in its service area.Type: ApplicationFiled: September 16, 2013Publication date: October 22, 2015Inventors: Xinxi Diao, Yiqing Cao, Zhifeng Ma, Linhui Wei, Qun Li
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Patent number: 8797955Abstract: The present invention provides a method for duplexing communication, and a method and a system for scheduling a terminal. The method for scheduling a terminal includes: determining capability information of the terminal when the terminal makes a request for a service; allocating a band resource for the terminal according to the capability information of the terminal and the currently available band resources, and sending information of the allocated band resource to the terminal in the band currently used by the terminal, wherein the allocated band resource includes a bidirectionally used band, and at least one of the uplink band and downlink band includes a unidirectional band; and communicating with the terminal in the manner of time division duplexing by way of the allocated band resource. The present invention makes the best of the band resources near the TDD licensed band and improves the communication efficiency.Type: GrantFiled: June 22, 2010Date of Patent: August 5, 2014Assignee: ZTE CorporationInventors: Xinxi Diao, Zhengrong Lai, Xiaodong Zhu, Zhifeng Ma, Guang Yang
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Publication number: 20120275352Abstract: A wireless relay device includes: a first receiving channel configured to receive signals from a base station or from a base station and a terminal, a second receiving channel configured to receive signals from the terminal, a first sending channel configured to send signals to the base station or to the base station and the terminal, and a second sending channel configured to send signals to the terminal, and further includes a radio frequency control unit configured to, during communicating with the base station and the terminal, control the first receiving channel, the second receiving channel, the first sending channel and the second sending channel to use frequency bands in the following mode: receiving signals synchronously from the base station and the terminal in a first time interval, and sending signals synchronously to the base station and the terminal in a second time interval, wherein the third frequency band and the fifth frequency band are two guard bands between the working frequency band of aType: ApplicationFiled: June 11, 2010Publication date: November 1, 2012Applicant: ZTE CorporationInventors: Xinxi Diao, Zhifeng Ma, Zhengrong Lai, Xiaodong Zhu, Guang Yang
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Publication number: 20120257551Abstract: The present invention provides a method for duplexing communication, and a method and a system for scheduling a terminal. The method for scheduling a terminal includes: determining capability information of the terminal when the terminal makes a request for a service; allocating a band resource for the terminal according to the capability information of the terminal and the currently available band resources, and sending information of the allocated band resource to the terminal in the band currently used by the terminal, wherein the allocated band resource includes a bidirectionally used band, and at least one of the uplink band and downlink band includes a unidirectional band; and communicating with the terminal in the manner of time division duplexing by way of the allocated band resource. The present invention makes the best of the band resources near the TDD licensed band and improves the communication efficiency.Type: ApplicationFiled: June 22, 2010Publication date: October 11, 2012Applicant: ZTE CORPORATIONInventors: Xinxi Diao, Zhengrong Lai, Xiaodong Zhu, Zhifeng Ma, Guang Yang
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Publication number: 20120250591Abstract: A method for carrier aggregation comprises: in a first time zone, sending, by a radio access point, a downlink signal to a user terminal by using a first guard band between a time division duplexing (TDD) system and a frequency division duplexing (FDD) system and a bidirectional communication band of the TDD system; or/and, in a second time zone, receiving, by the radio access point, a uplink signal sent by the user terminal using a second guard band between the TDD system and the FDD system and the bidirectional communication band. A method for dynamically allocating a spectrum is further provided. By way of the present invention, the utilization rate of the guard band and the flexibility in the use of the guard band are improved.Type: ApplicationFiled: June 12, 2010Publication date: October 4, 2012Applicant: ZTE CORPORATIONInventors: Xinxi Diao, Xiaodong Zhu, Zhengrong Lai, Zhifeng Ma, Guang Yang
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Patent number: 8068452Abstract: A cooperative transmission system for single frequency digital broadcasting network and method thereof are disclosed, said system includes a first double-layer cooperative transmission structure with same frequency and a second double-layer cooperative transmission structure with same frequency, which are vertically aggregated; wherein each of the double-layer cooperative transmission structures with same frequency is made up of a main transmission layer including several main transmitters with same transmitting frequency and an auxiliary transmission layer including several auxiliary transmitters with same transmitting frequency; the electromagnetic wave transmitted by the main transmitters in the first double-layer cooperative transmission structure with same frequency and the electromagnetic wave transmitted by the main transmitters in the second double-layer cooperative transmission structure with same frequency have different frequencies.Type: GrantFiled: May 24, 2006Date of Patent: November 29, 2011Assignee: ZTE CorporationInventor: Xinxi Diao
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Patent number: 7646750Abstract: The present invention relates to a method and apparatus of precise first-path detection in CDMA mobile communications systems, comprising the steps of: a. calculating the noise threshold for the first-path detection according to the multi-path profile; b. judging whether there is a maximum point exceeding the noise threshold in the multi-path profile, if yes, carrying out side-lobe suppression at this maximum point and obtaining the candidate first path; otherwise, setting the flag of no first path existing, and exiting the entire process of first-path detection; c. judging according to the location of the candidate first path whether the first path is ambiguous, if yes, carrying out correction of first-path ambiguity, obtaining the corrected location of final first path, and exiting the entire first-path detection process; otherwise, outputting the location of candidate first path as the location of final first path.Type: GrantFiled: May 28, 2004Date of Patent: January 12, 2010Assignee: Huawei Technologies Co., Ltd.Inventors: Bin Xu, Fangfu Guo, Xinxi Diao, Huanqiu Ye
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Publication number: 20090154582Abstract: A cooperative transmission system for single frequency digital broadcasting network and method thereof are disclosed, said system includes a first double-layer cooperative transmission structure with same frequency and a second double-layer cooperative transmission structure with same frequency, which are vertically aggregated; wherein each of the double-layer cooperative transmission structures with same frequency is made up of a main transmission layer including several main transmitters with same transmitting frequency and an auxiliary transmission layer including several auxiliary transmitters with same transmitting frequency; the electromagnetic wave transmitted by the main transmitters in the first double-layer cooperative transmission structure with same frequency and the electromagnetic wave transmitted by the main transmitters in the second double-layer cooperative transmission structure with same frequency have different frequencies.Type: ApplicationFiled: May 24, 2006Publication date: June 18, 2009Applicant: ZTE CORPORATIONInventor: Xinxi Diao
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Patent number: 7283787Abstract: The present invention relates to a repeater for positioning mobile station and a method thereof. The repeater according to the present invention is implemented through adding a cell identifier generator module to the downlink circuit structure of a conventional repeater; said cell identifier generator module includes: a synchronization searching unit designed to search for base station synchronization signal, a time delay unit designed to generate a fixed delay between start time of cell identifier signal frame and start time of base station pilot signal frame, and a cell identifier signal generating unit designed to generate cell identifier signal code word.Type: GrantFiled: January 27, 2003Date of Patent: October 16, 2007Assignee: Huawei Technologies Co., Ltd.Inventors: Xinxi Diao, Jiancheng Du
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Publication number: 20070115870Abstract: The present invention relates to a method and apparatus of precise first-path detection in CDMA mobile communications systems, comprising the steps of: a. calculating the noise threshold for the first-path detection according to the multi-path profile; b. judging whether there is a maximum point exceeding the noise threshold in the multi-path profile, if yes, carrying out side-lobe suppression at this maximum point and obtaining the candidate first path; otherwise, setting the flag of no first path existing, and exiting the entire process of first-path detection; c. judging according to the location of the candidate first path whether the first path is ambiguous, if yes, carrying out correction of first-path ambiguity, obtaining the corrected location of final first path, and exiting the entire first-path detection process; otherwise, outputting the location of candidate first path as the location of final first path.Type: ApplicationFiled: May 28, 2004Publication date: May 24, 2007Inventors: Bin Xu, Fangfu Guo, Xinxi Diao, Huangqiu Ye
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Patent number: 7151940Abstract: The invention provides a method and apparatus for increasing the accuracy for locating a cellular mobile station in an urban area.Type: GrantFiled: September 30, 2003Date of Patent: December 19, 2006Assignee: Huawei Technologies Co., Ltd.Inventors: Xinxi Diao, Gang Li, Weiming Duan, Jiang Wu
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Patent number: 7099640Abstract: The invention discloses a method that identifies whether a channel is LOS or NLOS in a mobile communication system. After coherent accumulation and non-coherent accumulation have been made by the system, first the method takes power difference between the direct path and the non-direct path in a same power delay profile to identify a channel; and then the result is further determined by {overscore (?)}/? difference of a LOS channel and a NLOS channel (where {overscore (?)} and ? is the mean delay and the RMS delay spread of a multipath power profile, respectively). A channel is determined as a LOS channel, if the power ratio of the Maximum Path to the Local Maximum Path is greater than a threshold K, and simultaneously the arrival time difference between the First Path and said Maximum Path is less than a time interval T; otherwise it is a NLOS channel. The method is easier to implement and compatible with the present mobile communication system.Type: GrantFiled: March 29, 2002Date of Patent: August 29, 2006Assignee: Huawei Technologies Co., Ltd.Inventors: Xinxi Diao, Fangfu Guo
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Patent number: 7099674Abstract: An apparatus and method for implementing multi-traffic load monitoring and prediction in a CDMA cellular mobile communication system includes a received signal strength indication (RSSI) measuring unit for measuring total interference power and processing a measured value to eliminate jitters; a parameter accounting or statistic unit for accounting for some traffic parameters associated to the load monitoring and prediction; a load monitoring unit for calculating the load monitoring based on the measured value and statistic results; and a load prediction unit for calculating an increased amount of an up link load after receiving or accessing new traffic and a total load value after receiving or accessing the new traffic based on parameters requested by the new traffic and calculation results transmitted in real time by the load monitoring unit.Type: GrantFiled: April 17, 2003Date of Patent: August 29, 2006Assignee: Huawei Technologies Co., Ltd.Inventors: Xinxi Diao, Yi Xie, Jun Li
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Publication number: 20050153653Abstract: “The present invention relates to a repeater for positioning mobile station and a method thereof. The repeater according to the present invention is implemented through adding a cell identifier generator module to the downlink circuit structure of a conventional repeater; said cell identifier generator module includes: a synchronization searching unit designed to search for base station synchronization signal, a time delay unit designed to generate a fixed delay between start time of cell identifier signal frame and start time of base station pilot signal frame, and a cell identifier signal generating unit designed to generate cell identifier signal code word.Type: ApplicationFiled: January 27, 2003Publication date: July 14, 2005Inventors: Xinxi Diao, Jiancheng Du
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Publication number: 20050124368Abstract: The invention discloses a method that identifies whether a channel is LOS or NLOS in a mobile communication system. After coherent accumulation and non-coherent accumulation have been made by the system, first the method takes power difference between the direct path and the non-direct path in a same power delay profile to identify a channel; and then the result is further determined by {overscore (?)}/? difference of a LOS channel and a NLOS channel (where {overscore (? )}and ? is the mean delay and the RMS delay spread of a multipath power profile, respectively). A channel is determined as a LOS channel, if the power ratio of the Maximum Path to the Local Maximum Path is greater than a threshold K, and simultaneously the arrival time difference between the First Path and said Maximum Path is less than a time interval T; otherwise it is a NLOS channel. The method is easier to implement and compatible with the present mobile communication system.Type: ApplicationFiled: March 29, 2002Publication date: June 9, 2005Inventors: Xinxi Diao, Fangfu Guo
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Publication number: 20040063441Abstract: The invention provides a method and apparatus for increasing the accuracy for locating a cellular mobile station in an urban area.Type: ApplicationFiled: September 30, 2003Publication date: April 1, 2004Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xinxi Diao, Gang Li, Weiming Duan, Jiang Wu
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Publication number: 20040048587Abstract: An apparatus and method for implementing multi-traffic load monitoring and prediction in a CDMA cellular mobile communication system includes a received signal strength indication (RSSI) measuring unit for measuring total interference power and processing a measured value to eliminate jitters; a parameter accounting or statistic unit for accounting for some traffic parameters associated to the load monitoring and prediction; a load monitoring unit for calculating the load monitoring based on the measured value and statistic results; and a load prediction unit for calculating an increased amount of an up link load after receiving or accessing new traffic and a total load value after receiving or accessing the new traffic based on parameters requested by the new traffic and calculation results transmitted in real time by the load monitoring unit.Type: ApplicationFiled: April 17, 2003Publication date: March 11, 2004Inventors: Xinxi Diao, Yi Xie, Jun Li