Patents by Inventor Jiewei Ding
Jiewei Ding 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: 11233533Abstract: An impulse radio ultra wideband multi-antenna time delay receiver and a method for acquiring an angle of arrival based on the same are disclosed. The receiver includes M antennas, M radio frequency paths, an analog front end, an analog-digital converter and a digital processing unit, wherein each antenna is correspondingly connected with one of the radio frequency paths, output ends of all the M radio frequency paths are connected with the analog front end, an output end of the analog front end is connected with an input end of the analog-digital converter, and an output end of the analog-digital converter is connected with the digital processing unit, wherein the radio frequency path corresponding to the mth antenna is provided with a time delayer, 1<m?M, and m and M are respectively natural numbers greater than 1.Type: GrantFiled: August 26, 2021Date of Patent: January 25, 2022Assignee: Shenzhen Giant Microelectronics Company LimitedInventors: Shaohua Zhao, Jiewei Ding, Lefeng Shen, Weimin Zhang
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Patent number: 9813214Abstract: A method, apparatus and system for feeding back early stop decoding are provided. The method includes: a terminal side adjusting encoded TFCI bits, and sending the adjusted TFCI bits to a NodeB side via a TFCI domain of an uplink DPCCH (S302); after sending the adjusted TFCI bits to the NodeB side, the terminal side performing a decoding operation on a downlink DPCH, and feeding back, via an idle TFCI domain of the uplink DPCCH, a decoding result to the NodeB side (304). By applying the technical solution, at least one of the problems in the related art that a NodeB cannot obtain a TFCI in time and a terminal side cannot feed back a downlink decoding result in time during early stop decoding can be solved.Type: GrantFiled: September 6, 2013Date of Patent: November 7, 2017Assignee: XI'AN ZHONGXING NEW SOFTWARE CO. LTDInventors: Meiying Wang, Jiewei Ding, Tao Liu
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Patent number: 9722758Abstract: This invention provides a method for a first communication device, such as a base station, to estimate a channel-quality profile of a channel when a second communication device, e.g., a user equipment, returns only channel-quality indicators (CQIs) of selected subbands and a wideband CQI. The profile is obtained by including, for any two neighboring frequencies of the selected subbands, an estimated CQI of a middle frequency between the two neighboring frequencies. After translating the CQIs of the two neighboring frequencies into corresponding linear CQI values, a linear estimated-CQI value for the middle frequency is determined by subtracting an offset from an average of said corresponding linear CQI values. The offset is determined according to a frequency separation between the two neighboring frequencies. Preferably, the offset is linearly proportional to the frequency separation. Interpolation, preferably linear interpolation, is used to obtain linear CQI values of other frequencies.Type: GrantFiled: May 20, 2015Date of Patent: August 1, 2017Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Jiewei Ding, Man Wai Kwan, Jihui Zhang, Kong Chau Tsang
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Patent number: 9713106Abstract: Provided are a method, a base station and a computer storage medium for implementing inner loop and closed loop power control. The method includes that when User Equipment (UE) is in a soft handover status, a cell which belongs to a Radio Link Set (RLS) different from that of a serving cell of the UE sends a fixed power control instruction to instruct the UE to increase transmission power.Type: GrantFiled: March 24, 2014Date of Patent: July 18, 2017Assignee: ZTE CORPORATIONInventors: Meiying Wang, Jiewei Ding, Tao Liu
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Patent number: 9698836Abstract: Systems and methods which provide mitigation of self-interference in spectrally efficient full duplex (e.g., transmit and receive using the same frequency simultaneously) communications are described. Embodiments provide an interference mitigation structure having a multi-tap vector modulator interference cancellation circuit operable to cancel time varying multipath interference in the analog RF domain. A multi-tap vector modulator interference cancellation circuit of embodiments may comprise part of a multi-stage interference cancellation circuit, such as a multi-stage interference cancellation circuit comprising a multi-tap vector modulator interference cancellation circuit and a digital residual interference cancellation circuit. A digital residual interference cancellation circuit of embodiments provides residual interference cancellation.Type: GrantFiled: March 23, 2015Date of Patent: July 4, 2017Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.Inventors: Wen Qin, Yuanyuan Du, Jiewei Ding, Man Wai Kwan, Angus Chi Keung Mak, Kong Chau Tsang
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Publication number: 20160344488Abstract: This invention provides a method for a first communication device, such as a base station, to estimate a channel-quality profile of a channel when a second communication device, e.g., a user equipment, returns only channel-quality indicators (CQIs) of selected subbands and a wideband CQI. The profile is obtained by including, for any two neighboring frequencies of the selected subbands, an estimated CQI of a middle frequency between the two neighboring frequencies. After translating the CQIs of the two neighboring frequencies into corresponding linear CQI values, a linear estimated-CQI value for the middle frequency is determined by subtracting an offset from an average of said corresponding linear CQI values. The offset is determined according to a frequency separation between the two neighboring frequencies. Preferably, the offset is linearly proportional to the frequency separation. Interpolation, preferably linear interpolation, is used to obtain linear CQI values of other frequencies.Type: ApplicationFiled: May 20, 2015Publication date: November 24, 2016Inventors: Jiewei DING, Man Wai KWAN, Jihui ZHANG, Kong Chau TSANG
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Publication number: 20160285486Abstract: Systems and methods which provide mitigation of self-interference in spectrally efficient full duplex (e.g., transmit and receive using the same frequency simultaneously) communications are described. Embodiments provide an interference mitigation structure having a multi-tap vector modulator interference cancellation circuit operable to cancel time varying multipath interference in the analog RF domain. A multi-tap vector modulator interference cancellation circuit of embodiments may comprise part of a multi-stage interference cancellation circuit, such as a multi-stage interference cancellation circuit comprising a multi-tap vector modulator interference cancellation circuit and a digital residual interference cancellation circuit. A digital residual interference cancellation circuit of embodiments provides residual interference cancellation.Type: ApplicationFiled: March 23, 2015Publication date: September 29, 2016Inventors: Wen Qin, Yuanyuan Du, Jiewei Ding, Man Wai Kwan, Angus Chi Keung Mak, Kong Chau Tsang
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Publication number: 20160057715Abstract: Provided are a method, a base station and a computer storage medium for implementing inner loop and closed loop power control. The method includes that when User Equipment (UE) is in a soft handover status, a cell which belongs to a Radio Link Set (RLS) different from that of a serving cell of the UE sends a fixed power control instruction to instruct the UE to increase transmission power.Type: ApplicationFiled: March 24, 2014Publication date: February 25, 2016Inventors: Meiying Wang, Jiewei Ding, Tao Liu
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Patent number: 9237513Abstract: A methods for performing a cell search in multiple antenna wireless systems using a plurality of spatial filters is disclosed, and includes applying a plurality of spatial filters to a plurality of received signal streams to generate a plurality of filtered signal streams. The plurality of received signal streams correspond to signals received at a plurality of receive antennas from a plurality of signal sources (e.g., neighboring cells). In an aspect, the plurality of spatial filters may be predefined spatial filters and may be weighted using a set of predefined filter weights. In an additional or alternative aspect, the plurality of spatial filters may be adaptive spatial filters and may be weighted using a set of dynamically determined filter weights. The method includes detecting physical network identities based on the plurality of filtered signal streams.Type: GrantFiled: June 13, 2014Date of Patent: January 12, 2016Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.Inventors: Yin Yang, Jiewei Ding, Yuxian Zhang, Honglei Zhang, Kong Chau Tsang
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Publication number: 20150365882Abstract: A methods for performing a cell search in multiple antenna wireless systems using a plurality of spatial filters is disclosed, and includes applying a plurality of spatial filters to a plurality of received signal streams to generate a plurality of filtered signal streams. The plurality of received signal streams correspond to signals received at a plurality of receive antennas from a plurality of signal sources (e.g., neighboring cells). In an aspect, the plurality of spatial filters may be predefined spatial filters and may be weighted using a set of predefined filter weights. In an additional or alternative aspect, the plurality of spatial filters may be adaptive spatial filters and may be weighted using a set of dynamically determined filter weights. The method includes detecting physical network identities based on the plurality of filtered signal streams.Type: ApplicationFiled: June 13, 2014Publication date: December 17, 2015Inventors: Yin Yang, Jiewei Ding, Yuxian Zhang, Honglei Zhang, Kong Chau Tsang
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Publication number: 20150358135Abstract: A method, apparatus and system for feeding back early stop decoding are provided. The method includes: a terminal side adjusting encoded TFCI bits, and sending the adjusted TFCI bits to a NodeB side via a TFCI domain of an uplink DPCCH (S302); after sending the adjusted TFCI bits to the NodeB side, the terminal side performing a decoding operation on a downlink DPCH, and feeding back, via an idle TFCI domain of the uplink DPCCH, a decoding result to the NodeB side (304). By applying the technical solution, at least one of the problems in the related art that a NodeB cannot obtain a TFCI in time and a terminal side cannot feed back a downlink decoding result in time during early stop decoding can be solved.Type: ApplicationFiled: September 6, 2013Publication date: December 10, 2015Inventors: Meiying WANG, Jiewei DING, Tao LIU
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Publication number: 20150304024Abstract: A method and device for distributing a code offset are provided. The method includes: an RNC equally dividing the access time of a UE into one or more sets of access time which are not overlapped with one another, wherein each set of access time comprises one or more timeslots; and the RNC distributing a corresponding code offset ?DPCH or ?F-DPCH according to the type of the UE, wherein the ?DPCH or ?F-DPCH is located in the above-mentioned timeslot in the above-mentioned access time of the above-mentioned UE. The disclosure solves the problem in the related art, thereby reducing the interference among the TDM UEs, improving the system throughput, and being unable to severely affect the performance of the downlink as well.Type: ApplicationFiled: September 17, 2013Publication date: October 22, 2015Applicant: ZTE CorporationInventors: Lu LIU, Chen WANG, Jiewei DING
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Patent number: 9049738Abstract: A sectorized scheduling method for the high speed uplink packet access service is provided in the present invention, the method comprises: obtaining the current sector load of each sector and the current high speed uplink packet access service HSUPA mobile station load of each sector, and the maximal allowable sector load of each sector; obtaining the rest available sector load based on the maximal allowable load and the current sector load, performing load assignment for each sector based on the rest available sector load and the distribution of HSUPA mobile station in various sectors. A sector based scheduling system for the high speed uplink packet access service is also provided in the present invention. The present invention correctly associates the HSUPA UE load and the sector load, solves the problem of the larger overload or the larger underload, and improves the HSUPA throughput by several times.Type: GrantFiled: December 30, 2008Date of Patent: June 2, 2015Assignee: ZTE CorporationInventors: Jiewei Ding, Yuanping Zheng, Changchun Tang, Chen Wang
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Patent number: 8514784Abstract: A method and an apparatus for processing downlink signals in different sectors, which may be applied in processing downlink signals in a one or more sectored cell. The method and apparatus may include a Node B determining a sector where a mobile terminal, which has built a wireless link with the Node B, is located based on a current connection. The method and apparatus may allow Node B to separately schedule resources of the one or more sectors in the cell, and for one or more mobile equipment which has built a wireless link with the Node B. The method and apparatus allows Node B transmitting of downlink signals to this mobile terminal only in the sector where the mobile terminal locates currently, while processing downlink signals in different sectors. The method and apparatus can reduce downlink transmission power and improve network coverage quality.Type: GrantFiled: August 27, 2008Date of Patent: August 20, 2013Assignee: ZTE CorporationInventors: Jiewei Ding, Yibin Zhai
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Publication number: 20120020228Abstract: A sectorized scheduling method for the high speed uplink packet access service is provided in the present invention, the method comprises: obtaining the current sector load of each sector and the current high speed uplink packet access service HSUPA mobile station load of each sector, and the maximal allowable sector load of each sector; obtaining the rest available sector load based on the maximal allowable load and the current sector load, performing load assignment for each sector based on the rest available sector load and the distribution of HSUPA mobile station in various sectors. A sector based scheduling system for the high speed uplink packet access service is also provided in the present invention. The present invention correctly associates the HSUPA UE load and the sector load, solves the problem of the larger overload or the larger underload, and improves the HSUPA throughput by several times.Type: ApplicationFiled: December 30, 2008Publication date: January 26, 2012Applicant: ZTE CORPORATIONInventors: Jiewei Ding, Yuanping Zheng, Changchun Tang, Chen Wang
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Publication number: 20110149823Abstract: The present invention discloses a method for processing downlink signals in different sectors, applied in processing downlink signals in sectored cell, and this method comprises: a Node B determining a sector where a mobile terminal, which has built a wireless link with the Node B, locates currently; and the Node B separately scheduling resources of each sectors in the cell, and for each mobile equipment which has built a wireless link with the Node B, the Node B transmitting downlink signals to this mobile terminal only in the sector where the mobile terminal locates currently. The present invention also discloses a Node B for processing downlink signals in different sectors. The present invention can reduce downlink transmission power and improve network coverage quality.Type: ApplicationFiled: August 27, 2008Publication date: June 23, 2011Applicant: ZTE CORPORATIONInventors: Jiewei Ding, Yibin Zhai
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Patent number: 7630320Abstract: The present invention provides a method of scheduling packet in a wireless telecommunication system, in which the user packet queues to be transmitted are divided into the user packet queues with packet loss and the user packet queues without packet loss; for the user packet queues with packet loss, if a real time loss ratio of packet for the user exceeds a predetermined loss ratio threshold of packet, terminate a connection to the user; if the real time loss ratio of packet for the user does not exceed the predetermined loss ratio threshold of packet, schedule the user packet queues according to a volume of the loss ratio of packet; for the user packet queues without packet loss, schedule according to packet lengths, channel quality states, time delays and time delay jitters.Type: GrantFiled: November 14, 2003Date of Patent: December 8, 2009Assignee: ZTE CorporationInventors: Junfeng Zhang, Jiewei Ding, Yi Sun, Jun Zhang, Yingchun Pu
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Publication number: 20070116024Abstract: The present invention provides a method of scheduling packet in a wireless telecommunication system, in which the user packet queues to be transmitted are divided into the user packet queues with lost packet and the user packet queues without lost packet; for the user packet queues with lost packet, if a real time lost ratio of packet for the user excesses a predetermined lost ratio threshold of packet, terminate a connection to the user; if the real time lost ratio of packet for the user does not excess the predetermined lost ratio threshold of packet, schedule the user packet queues according to a volume of the lost ratio of packet; for the user packet queues without lost packet, schedule according to packet lengths, channel quality states, time delays and time delay jitters.Type: ApplicationFiled: November 14, 2003Publication date: May 24, 2007Inventors: Junfeng Zhang, Jiewei Ding, Yi Sun, Jun Zhang, Yingchun Pu