Patents by Inventor Ni Ma
Ni Ma 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: 20150116173Abstract: An electromagnetic dipole antenna designed in the present invention includes an antenna radiating unit and a metal ground, where the antenna radiating unit mainly includes vertical electric dipole and horizontal magnetic dipole, where the vertical electric dipole and the horizontal magnetic dipole jointly form an electromagnetic coupling structure. The antenna has advantages of small size, low profile, and the like.Type: ApplicationFiled: December 29, 2014Publication date: April 30, 2015Inventors: Wenxin Zhang, Qihao Xu, Hongli Peng, Zehe Zhu, Jianping Zhao, Ni Ma
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Patent number: 8958394Abstract: A technique for operating a wireless communications system that supports multi-user multiple-input multiple-output (MU-MIMO) communications between a base station and multiple mobile stations involves generating inter-cell interference information at the mobile stations and providing the inter-cell interference information to the base station. The base station uses the inter-cell interference information to calculate channel quality indicators (CQIs) and then makes scheduling decisions in response to the CQIs. Data is transmitted from the base station to the mobile stations according to the scheduling decisions.Type: GrantFiled: May 16, 2011Date of Patent: February 17, 2015Assignee: STMicroelectronics International N.V.Inventors: Kai Xu, Chen Zixiong, Ni Ma, Kai Sun, Bei Zhou, Ying Wang, Ping Zhang
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Publication number: 20140348110Abstract: A method and an apparatus for transmitting control information are disclosed. The method includes: grouping UEs in a cell, and obtaining second control information of each UE group after grouping; performing joint channel coding on the second control information of each UE group; obtaining first control information, and transmitting the first control information to the UEs in the cell, where the first control information includes indication information of the second control information, on which joint channel coding has been performed, of each UE group, so as to obtain the second control information according to the indication information; and transmitting the second control information, on which joint channel coding has been performed, of each UE group to the UEs in the cell.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Inventors: Yi WANG, Jun NI, Dageng CHEN, Ni MA
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Patent number: 8811505Abstract: A channel modeling method for Inter Carrier Interference (ICI) cancellation in multi-carrier wireless communication systems comprises: describing the channel with a plurality of fixed matrices and an equal-numbered plurality of unfixed variables; one-to-one pairing each of the described plurality of unfixed variables with one of described plurality of fixed matrices. Corresponding system is also provided. The method and system can compensate for the channel distortion of the Doppler Effect even if the Doppler Frequency Offset is relatively significant.Type: GrantFiled: August 4, 2008Date of Patent: August 19, 2014Assignee: NXP, B.V.Inventors: Xiabo Zhang, Ni Ma
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Patent number: 8792538Abstract: The present invention provides a method and an apparatus for transmitting data using a codebook. The method includes: receiving current antenna configuration information of a transmitting end; obtaining a mask matrix corresponding to the current antenna configuration according to the current antenna configuration information; generating a codebook corresponding to the current antenna configuration according to a mother codebook and the mask matrix; selecting one codebook element from the codebook, and transmitting indication information corresponding to the codebook element to the transmitting end; and receiving data transmitted by the transmitting end. In the embodiments of the present invention, a mask matrix is obtained according to current antenna configuration information, and a codebook is generated according to the mask matrix and a mother codebook that is corresponding to the maximum number of antennas and the maximum number of layers that are fed back through channel state information.Type: GrantFiled: October 29, 2012Date of Patent: July 29, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Jiayin Zhang, Jun Ni, Wei Ni, Ni Ma
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Publication number: 20140098901Abstract: A method and an apparatus for transmitting data using a codebook include receiving current antenna configuration information of a transmitting end, obtaining a mask matrix corresponding to the current antenna configuration according to the current antenna configuration information. The method also includes generating a codebook corresponding to the current antenna configuration according to a mother codebook and the mask matrix and selecting one codebook element from the codebook. Indication information corresponding to the codebook element is transmitted to the transmitting end and receiving data is transmitted by the transmitting end.Type: ApplicationFiled: December 10, 2013Publication date: April 10, 2014Applicant: Huawei Technologies Co., Ltd.Inventors: Jiayin Zhang, Jun Ni, Wei Ni, Ni Ma
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Publication number: 20140086148Abstract: Embodiments of the present invention disclose a method and a base station for coordinating cell interference. The method includes: receiving each backhaul signal transmitted by each cooperative base station, where the backhaul signal is determined by the cooperative base station according to strength of a signal received from a served user and strength of a signal received by a serving base station from an interfering user in the cooperative base station; and combining, at different stages of baseband processing and according to a type of each backhaul signal, a backhaul signal of a corresponding type and a user signal received from each user. An embodiment of the present invention further provides a base station. According to the embodiments of the present invention, backhaul transmission capacity is maximally utilized, backhaul transmission efficiency is improved, and relatively high performance is obtained.Type: ApplicationFiled: November 27, 2013Publication date: March 27, 2014Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Ni MA, Qunfang LOU, Michael GRIEGER, Patrick MARSCH
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Publication number: 20140079007Abstract: Embodiments of the present disclosure relate to the field of communications technologies, and disclose a data stream transmission method, and a related device and system. The data stream transmission method includes: a user equipment establishes a first network link over a first network and a second network link over a second network with a network side, where the first network is different from the second network; the user equipment associates the first network link with the second network link; and the user equipment distributes, according a scheduling algorithm, a data stream to the first network link and to the second network link for transmission. In the embodiments of the present disclosure, hybrid transmission of a data stream may be implemented in different networks. Compared with an existing solution, in the embodiments of the present disclosure, distribution may be performed more flexibly, and a quality of service assurance may be improved.Type: ApplicationFiled: November 27, 2013Publication date: March 20, 2014Applicant: Huawei Technologies Co., Ltd.Inventors: Jiang LI, Min HUANG, Ni MA, Yongmao LI, Bin XIA, Jianmin LU, Yi ZHANG
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Publication number: 20130308587Abstract: The present invention provides a transmission method and apparatus for cancelling inter-carrier interference in wireless communication systems. Particular carriers are not used for data transmission but carry weighted data to cancel the ici interference of a first group of interfering sub-carriers onto a second group of victim sub-carriers. The weights are inversely proportional to the frequency offset between the interfering sub-carriers and the victim sub-carriers.Type: ApplicationFiled: July 31, 2013Publication date: November 21, 2013Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Xiaobo Zhang, Ni Ma, Matthew P.J. Baker, Qi Zhou, Gang Wu
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Publication number: 20130273854Abstract: Embodiments of the present invention provide a communication method, an apparatus, and a system for a distributed antenna system, and relate to the field of communications technologies. The communication method includes: receiving, by a receiving device, a measurement reference signal corresponding to an antenna cluster in a cell, where all antennas in the cell are divided into at least one antenna cluster, and each antenna cluster includes at least one antenna and has a corresponding cluster identifier; obtaining channel information corresponding to the antenna cluster according to the measurement reference signal; and transmitting the cluster identifier and the channel information corresponding to the antenna cluster to a central processing device, so that the central processing device determines the antenna cluster serving the receiving device according to the cluster identifier and the channel information corresponding to the antenna cluster.Type: ApplicationFiled: June 11, 2013Publication date: October 17, 2013Inventors: Jiayin Zhang, Jun Ni, Yi Wang, Ni Ma, Jianmin Lu
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Patent number: 8542572Abstract: A method for wireless communication between a base station and a plurality of subscriber stations is described wherein a communication capacity is partitioned in resource units at least by code multiplexing, which resource units are distributed by the base station over said devices, wherein data from each subscriber station is spread by means of a signature sequence, characterized in that multiple resource units assigned to a common subscriber station have the same signature sequence.Type: GrantFiled: March 18, 2008Date of Patent: September 24, 2013Assignee: ST-Ericsson SAInventors: Xiaobo Zhang, Ni Ma, Gang Wu, Xun Fan, Qi Zhou
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Patent number: 8520750Abstract: The present invention provides a transmission method and apparatus for cancelling inter-carrier interference in wireless communication systems. Particular carriers are not used for data transmission but carry weighted data to cancel the ici interference of a first group of interfering sub-carriers onto a second group of victim sub-carriers. The weights are inversely proportional to the frequency offset between the interfering sub-carriers and the victim sub-carriers.Type: GrantFiled: August 9, 2007Date of Patent: August 27, 2013Assignee: Koninklijke Philips N.V.Inventors: Xiaobo Zhang, Ni Ma, Matthew Peter John Baker, Qi Zhou, Gang Wu
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Patent number: 8488453Abstract: A method and apparatus used for enhanced uplink data transmission include monitoring the communication status of a plurality of UEs (user equipment) which conduct uplink data transmission in the RAN; receiving the data transmitted on at least one dedicated uplink channel from at least one of the plurality of UEs; and according to the communication status of the plurality of UEs, dynamically allocating the number of dedicated uplink channels for at least one UE of the plurality of UEs.Type: GrantFiled: May 10, 2006Date of Patent: July 16, 2013Assignees: Koninklijke Philips Electronics N.V., Sharp CorporationInventors: Xiaobo Zhang, Ni Ma, Yueheng Li
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Patent number: 8472545Abstract: Operating a wireless communications system that supports multi-user multiple-input multiple-output (MU-MIMO) communications between a base station and multiple mobile stations involves generating a channel estimation, predicting a future channel estimation from the channel estimation, precoding data in response to the predicted future channel estimation, and transmitting the precoded data.Type: GrantFiled: October 10, 2008Date of Patent: June 25, 2013Assignee: NXP B.V.Inventors: Gang Wu, Ni Ma, Xiaobo Zhang
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Patent number: 8432984Abstract: Orthogonal Frequency Division Multiplexing (OFDM) is a typical multi-carrier technique that has been applied by many advanced wireless communication systems, e.g., 3GPP Long Term Evolution (LTE) and WiMAX. In order to support high mobility transmission, the sub-carrier spacing of multi-carrier systems is made large enough to overcome the Doppler frequency offset. However, this large sub-carrier spacing results in lower transmission efficiency since the CP (Cyclic Prefix) consumes a considerable of radio resources. The present invention provides an adaptive scheme to determine the sub-carrier spacing in which the default sub-carrier spacing is set to support lower mobility, while the adaptively adjusted sub-carrier spacing based on User Equipment (UE) mobile velocities is set to support higher mobility.Type: GrantFiled: August 4, 2008Date of Patent: April 30, 2013Assignee: NXP B.V.Inventors: Xiaobo Zhang, Ni Ma
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Patent number: 8422580Abstract: A space-time-frequency encoding scheme, for use in wireless communication systems, transforms a plurality of input element pairs into a plurality orthogonal element pairs, each of the plurality of input element pairs and corresponding orthogonal element pairs forming an orthogonal matrix. A first element, second element and a duplicate of the second element in each of the plurality of input element pairs and corresponding orthogonal element pairs are mapped as channel elements to three predetermined time-frequency cells in respective first and second two-dimension time-frequency matrixes for transmission via different antennas. As the input element pairs and corresponding orthogonal element pairs, transmitted via different antennas, are orthogonal in both the space-time domain and the space-frequency domain at the same time, two-dimension space-time transmit diversity gain and space-frequency transmit diversity gain can be achieved at the same time.Type: GrantFiled: May 30, 2007Date of Patent: April 16, 2013Assignees: Koninklijke Philips Electronics N.V., Sharp CorporationInventors: Gang Wu, Qi Zhou, Ni Ma, Xiaobo Zhang
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Patent number: 8411773Abstract: In multi-carrier systems, distributed resource allocation of the resources of multiple user equipments (UEs) can result in better frequency diversity gain but can also induce Inter-Carrier Interference (ICI) between UEs. This ICI can become quite serious in a high mobility environment. Based on a novel radio channel model for ICI cancellation in multi-carrier systems and an iterative channel estimation scheme for ICI cancellation in multi-carrier systems, the present invention provides a simplified equalization scheme in the frequency domain to determine and remove ICI of both a targeting UE as well as other UEs.Type: GrantFiled: August 4, 2008Date of Patent: April 2, 2013Assignee: NXP B.V.Inventors: Xiabo Zhang, Ni Ma
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Patent number: 8374266Abstract: A linear iterative channel estimation scheme and corresponding pilot allocation scheme are provided to perfect a channel model that cancels the Inter-Carrier Interference (ICI) for multi-carrier systems (e.g., OFDM, SC-FDMA, MC-CDMA, etc.) under high mobility conditions. Two issues of the linear iterative channel estimation scheme of the channel model, namely, overloaded pilots and increased Gauss noise are specifically addressed by exemplary embodiments. With the iterative channel estimation scheme provided by the present invention, the minimum pilot number is equal to the length of multi-path delay, and the Gauss noise is not increased.Type: GrantFiled: August 4, 2008Date of Patent: February 12, 2013Assignee: NXP B.V.Inventors: Xiabo Zhang, Ni Ma
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Publication number: 20120230282Abstract: A base station includes multiple edge nodes and a central node. The edge nodes are configured to perform communication with a user equipment, and execute baseband processing and mutual conversion between baseband data and radio data, in which the multiple edge nodes belong to one or more edge node groups, and each edge node group includes at least one edge node. The central node is configured to perform communication with the multiple edge nodes, manage the multiple edge nodes, and perform resource sharing so that resources are shared by the multiple edge nodes. The base station is divided into two levels of architecture, namely, a central node and an edge node, and the central node implements resource sharing so that resources are shared by the edge nodes, so that a resource sharing degree in the base station is enhanced.Type: ApplicationFiled: May 23, 2012Publication date: September 13, 2012Inventors: Wangjun WU, Jun ZHOU, Peng LAN, Ziqiang WANG, Jun XIA, Yongxiang ZHAO, Jingyu WANG, Nengwu XIANG, Ni MA
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Publication number: 20120042352Abstract: A set top box transmits a connection request to a TV to request a number of response signals therefrom. The response signals are read when the TV is in a working state, and an idle signal is output if the response signals are not read in a predetermined time. State of the TV is determined according to the response signals or the idle signal, and the set top box is controlled to be in the working state according to the starting signal, or placed a sleeping/standby state according to the standby signal.Type: ApplicationFiled: August 31, 2010Publication date: February 16, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., AMBIT MICROSYSTEMS (SHANGHAI) LTD.Inventors: FA-JIAN WANG, ZHI-QIANG ZHANG, XIAO-NI MA