Patents by Inventor Zhigang Yan
Zhigang Yan 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: 20240072875Abstract: A multiple-input multiple-output (MIMO) receiver for Wireless Fidelity (Wi-Fi), and an electronic device. The MIMO receiver for Wi-Fi includes n antennas, an energy detection circuitry, a multilink gating circuitry, receiving links, a frequency offset adjustment circuitry, and a gating control circuitry. The multilink gating circuitry includes one energy detection gating output terminal coupled to the frequency offset adjustment circuitry through the energy detection circuitry and n-1 non-energy detection gating output terminals coupled to the frequency offset adjustment circuitry. The multilink gating circuitry connects each gating input terminal to one of the gating output terminals. The gating control circuitry periodically obtains a signal strength of each of the receiving links, and controls, based on the signal strength, the multilink gating circuitry to connect the gating input terminal corresponding to the receiving link that meets a preset condition to the energy detection gating output terminal.Type: ApplicationFiled: November 16, 2021Publication date: February 29, 2024Inventors: Tengfei MA, Guochu CHEN, Zhigang YAN
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Patent number: 9999068Abstract: Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.Type: GrantFiled: April 15, 2016Date of Patent: June 12, 2018Assignee: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO. LTD.Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Yongbo Zeng, Yubao Zhou, Zhigang Yan, Jun Lei, Lijun Pan, Feifei Wang
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Patent number: 9515795Abstract: Disclosed in present invention is a wireless communication system, comprising: a CAP, for determining a structure of a current physical frame according to scheduled transmission resources, and sending information for indicating the structure of the current physical frame in the current physical frame; and at least one STA communicating with the CAP, for determining the structure of the current physical frame according to the information for indicating the structure of the current physical frame, the length of each physical frame depending on the structure of the current physical frame and being not fixed. Also disclosed are two devices for wireless communication.Type: GrantFiled: March 22, 2012Date of Patent: December 6, 2016Assignee: Nufront Mobile Communications Technology Co., Ltd.Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Jun Lei, Lijun Pan, Zhigang Yan, Feifei Wang
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Patent number: 9509463Abstract: Disclosed is a method for implementing link self-adaptation, comprising: sending a downlink sounding channel and a channel quality information CQI feedback resource indication; and receiving CQI information, and selecting a suitable transmission mode for downlink data transmission according to the CQI information. Further disclosed are a network device and a terminal device. By using the method and devices provided in the present invention, the spectrum utilization rate and system performance can be improved.Type: GrantFiled: March 16, 2012Date of Patent: November 29, 2016Assignee: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTDInventors: Dongshan Bao, Huijuan Yao, Jing Wang, Shenfa Liu, Lijun Pan, Jiaqing Wang, Xiaoyan Yu, Zhigang Yan
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Publication number: 20160234858Abstract: Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.Type: ApplicationFiled: April 15, 2016Publication date: August 11, 2016Inventors: DONGSHAN BAO, JING WANG, SHENFA LIU, YONGBO ZENG, YUBAO ZHOU, ZHIGANG YAN, JUN LEI, LIJUN PAN, FEIFEI WANG
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Patent number: 9401747Abstract: Disclosed in the present invention is a method for data transmission. The method comprises the following steps: receiving coded bit streams; mapping said coded bit streams to every spatial stream. A device for implementing stream mapping, a device for implementing rate matching and a transmitter are also disclosed in the present invention. With the method and device in the present invention, compared with the current stream mapping method, the mapping is more uniform with higher gain in high order modulation and multi-streams circumstance in a closed-loop model. And the system performance of a radio communication system could be further improved.Type: GrantFiled: March 16, 2012Date of Patent: July 26, 2016Assignee: Nufront Mobile Communications Technology Co., Ltd.Inventors: Dongshan Bao, Shenfa Liu, Jing Wang, Lijun Pan, Zhigang Yan
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Patent number: 9391760Abstract: The present invention provides a method for accessing a wireless network, so as to implement acquisition of system synchronization during the process of accessing the wireless network in the situation that a physical frame structure can be configured dynamically. The method for acquiring system synchronization comprises: searching a physical frame on a current sub-channel; resolving a system information channel (SICH) and a control channel (CCH) in the found physical frame, wherein the SICH indicates a structure of the physical frame, and the CCH indicates allocation of system resources; and acquiring a system parameter from the physical frame by using the resolving result. A device for implementing the above method is further provided.Type: GrantFiled: March 7, 2012Date of Patent: July 12, 2016Assignee: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTDInventors: Dongshan Bao, Huijuan Yao, Yubao Zhou, Xiaoyan Yu, Jun Lei, Shenfa Liu, Jing Wang, Lijun Pan, Zhigang Yan
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Patent number: 9351315Abstract: Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.Type: GrantFiled: March 22, 2012Date of Patent: May 24, 2016Assignee: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO. LTD.Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Yongbo Zeng, Yubao Zhou, Zhigang Yan, Jun Lei, Lijun Pan, Feifei Wang
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Patent number: 9295002Abstract: A method for open loop uplink access power control comprises: estimating the uplink transmission path loss according to received signal power of a station (STA) and the transmit power of a central access point (CAP); determining the transmission bandwidth allocated by the CAP for uplink transmission and deviation adjustment of the CAP; determining a modulation-coding mode and determining requirements of the carrier-to-noise ratio corresponding to the modulation-coding mode; and calculating a target value for adjusting the transmit power of the STA. Also disclosed is a device for open loop uplink access power control.Type: GrantFiled: March 5, 2012Date of Patent: March 22, 2016Assignee: Nufront Mobile Communications Technology Co., Ltd.Inventors: Dongshan Bao, Lijun Pan, Huijuan Yao, Yubao Zhou, Xiaoyan Yu, Jun Lei, Jing Wang, Shenfa Liu, Zhigang Yan
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Patent number: 9240872Abstract: Disclosed is a method for configuring a pilot frequency in a wireless communication system, comprising: on the basis of at least one item among a current wireless channel characteristic parameter, device capability information of a correspondent node, and system requirement information, configuring in real-time a pilot frequency for different transmissions during a transmission process; and transmitting the configuration result to the correspondent node. Also disclosed is a corresponding device for configuring the pilot frequency. The present invention allows for configuration in real-time of the pilot frequency. This facilitates improved transmission reliability and guaranteed communication quality, and reduces pilot frequency overhead, and at the same time, is applicable in additional number of channel environments and application scenarios.Type: GrantFiled: March 22, 2012Date of Patent: January 19, 2016Assignee: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTD.Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Zhigang Yan, Feifei Wang
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Patent number: 9191084Abstract: A method is for realizing Multi-Input Multi-Output which includes steps of: sending, by a Central Access Point, a downlink sounding channel, Multi-Input Multi-Output (MIMO) control information, and a feedback resource indicator to a Station (STA); detecting, by the STA, the downlink detection channel to obtain channel information, and feeding back on the feedback resource according to the indication of the MIMO control information; and selecting, by the Central Access Point, a suitable MIMO mode for downlink data transmission according to the feedback of the STA.Type: GrantFiled: January 16, 2012Date of Patent: November 17, 2015Assignee: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTDInventors: Dongshan Bao, Huijuan Yao, Jiaqing Wang, Xiaoyan Yu, Shenfa Liu, Zhigang Yan
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Patent number: 9007887Abstract: Disclosed is a communication method comprising: determining the length, N, of a random access sequence on the basis of system configuration information, where N is less than or equal to the number of available subcarriers; determining a cyclic shift parameter collection and a cyclic prefix on the basis of a system coverage area as designed; acquiring and on the basis of a MAC address of a central access point (CAP), or of a physical layer identifier thereof, and of a predetermined generator polynomial, generating a PN sequence of length N, then constellation-mapping and subcarrier-mapping the PN sequence; cyclically shifting, on the basis of the cyclic shift parameter, the constellation-mapped and subcarrier-mapped sequence, then orthogonally transforming the cyclically shifted sequence; acquiring the sequence needed, adding the cyclic prefix thereto, acquiring a random access signal; and performing subsequent processing then transmitting to a receiving-end.Type: GrantFiled: March 23, 2012Date of Patent: April 14, 2015Assignee: Beijing NuFront Mobile Multimedia Technology Co. LtdInventors: Dongshan Bao, Lijun Pan, Shenfa Liu, Jing Wang, Jun Lei, Zhigang Yan
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Publication number: 20150085732Abstract: A method for open loop uplink access power control comprises: estimating the uplink transmission path loss according to received signal power of a station (STA) and the transmit power of a central access point (CAP); determining the transmission bandwidth allocated by the CAP for uplink transmission and deviation adjustment of the CAP; determining a modulation-coding mode and determining requirements of the carrier-to-noise ratio corresponding to the modulation-coding mode; and calculating a target value for adjusting the transmit power of the STA. Also disclosed is a device for open loop uplink access power control.Type: ApplicationFiled: March 5, 2012Publication date: March 26, 2015Inventors: Dongshan Bao, Li Jun Pan, Hui juan Yao, Yubao Zhou, Xiaoyan Yu, Jun Lei, Jing Wang, Shenfa Liu, Zhigang Yan
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Publication number: 20140286246Abstract: Disclosed is a method for implementing link self-adaptation, comprising: sending a downlink sounding channel and a channel quality information CQI feedback resource indication; and receiving CQI information, and selecting a suitable transmission mode for downlink data transmission according to the CQI information. Further disclosed are a network device and a terminal device. By using the method and devices provided in the present invention, the spectrum utilization rate and system performance can be improved.Type: ApplicationFiled: March 16, 2012Publication date: September 25, 2014Applicant: BEIJING NUFRONT MOBILE MULTIMEDIA TECHONOLOGY CO., LTD.Inventors: Dongshan Bao, Huijuan Yao, Jing Wang, Shenfa Liu, Lijun Pan, Jiaqing Wang, Xiaoyan Yu, Zhigang Yan
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Publication number: 20140185697Abstract: Disclosed in the present invention is a method for data transmission. The method comprises the following steps: receiving coded bit streams; mapping said coded bit streams to every spatial stream. A device for implementing stream mapping, a device for implementing rate matching and a transmitter are also disclosed in the present invention. With the method and device in the present invention, compared with the current stream mapping method, the mapping is more uniform with higher gain in high order modulation and multi-streams circumstance in a closed-loop model. And the system performance of a radio communication system could be further improved.Type: ApplicationFiled: March 16, 2012Publication date: July 3, 2014Inventors: Dongshan Bao, Shenfa Liu, Jing Wang, Lijun Pan, Zhigang Yan
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Publication number: 20140112264Abstract: The present invention provides a resource request method, a station, and a central access point. The method comprises: bearing a transmission resource request in a data frame; and sending the data frame carrying the transmission resource request. The method provides a solution for acquiring resources required by uplink transmission data.Type: ApplicationFiled: March 23, 2012Publication date: April 24, 2014Inventors: Dongshan Bao, Yubao Zhou, Xiaoyan Yu, Huijuan Yao, Zhigang Yan, Shenfa Liu
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Publication number: 20140086168Abstract: Disclosed in present invention is a wireless communication system, comprising: a CAP, for determining a structure of a current physical frame according to scheduled transmission resources, and sending information for indicating the structure of the current physical frame in the current physical frame; and at least one STA communicating with the CAP, for determining the structure of the current physical frame according to the information for indicating the structure of the current physical frame, the length of each physical frame depending on the structure of the current physical frame and being not fixed. Also disclosed are two devices for wireless communication.Type: ApplicationFiled: March 22, 2012Publication date: March 27, 2014Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Jun Lei, Lijun Pan, Zhigang Yan, Feifei Wang
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Publication number: 20140086169Abstract: The present invention provides a method for accessing a wireless network, so as to implement acquisition of system synchronization during the process of accessing the wireless network in the situation that a physical frame structure can be configured dynamically. The method for acquiring system synchronization comprises: searching a physical frame on a current sub-channel; resolving a system information channel (SICH) and a control channel (CCH) in the found physical frame, wherein the SICH indicates a structure of the physical frame, and the CCH indicates allocation of system resources; and acquiring a system parameter from the physical frame by using the resolving result. A device for implementing the above method is further provided.Type: ApplicationFiled: March 7, 2012Publication date: March 27, 2014Applicant: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTDInventors: Dongshan Bao, Huijuan Yao, Yubao Zhou, Xiaoyan Yu, Jun Lei, Shenfa Liu, Jing Wang, Lijun Pan, Zhigang Yan
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Publication number: 20140064206Abstract: Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.Type: ApplicationFiled: March 22, 2012Publication date: March 6, 2014Inventors: Dongshan Bao, Jing Wang, Shenfa Liu, Yongbo Zeng, Yubao Zhou, Zhigang Yan, Jun Lei, Lijun Pan, Feifei Wang
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Publication number: 20140044069Abstract: A method is for realizing Multi-Input Multi-Output which includes steps of: sending, by a Central Access Point, a downlink sounding channel, Multi-Input Multi-Output (MIMO) control information, and a feedback resource indicator to a Station (STA); detecting, by the STA, the downlink detection channel to obtain channel information, and feeding back on the feedback resource according to the indication of the MIMO control information; and selecting, by the Central Access Point, a suitable MIMO mode for downlink data transmission according to the feedback of the STA.Type: ApplicationFiled: January 16, 2012Publication date: February 13, 2014Applicant: BEIJING NUFRONT MOBILE MULTIMEDIA TECHNOLOGY CO., LTDInventors: Dongshan Bao, Huijuan Yao, Jiaqing Wang, Xiaoyan Yu, Shenfa Liu, Zhigang Yan