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1. 发明授权

US10411809B2 System and methods for high symbol-rate optical nyquist signal generation with roll-off factor approaching zero 有权
公开(公告)号：US10411809B2
公开(公告)日：2019-09-10
申请号：US15334417
申请日：2016-10-26
申请人： ZTE (USA) Inc.
发明人： Jianjun Yu , Junwen Zhang
IPC分类号： H04B10/54 , H04J14/02 , H04B10/548
摘要： Disclosed systems, methods, and computer program products enable high symbol-rate optical Nyquist signal generation with roll-off factors approaching zero by combining digital and all-optical methods. The combined digital and all-optical methods utilize all-optical sine-shaped pulse generation and orthogonal time-division multiplexing with quadrature amplitude modulation using digital Nyquist signals. Disclosed embodiments exhibit inter-channel-interference penalties that are less than 0.5-dB for both 75-GBaud and 125-GBaud optical Nyquist signals, in contrast to conventional signals generated using rectangular waveform driving signals that exhibit penalties greater than 2.5-dB and 1.5-dB for 75-GBaud and 125-GBaud signals, respectively. The disclosed embodiments, therefore, enable significant improvement over conventional systems by reducing inter-channel-interference penalties caused by excess modulation induced bandwidth.

2. 发明授权

US10212708B2 Method and apparatus for resource allocation for unlicensed spectrum in new radio (NR) 有权
公开(公告)号：US10212708B2
公开(公告)日：2019-02-19
申请号：US15670417
申请日：2017-08-07
申请人： ZTE (USA) Inc.
发明人： Carolyn Taylor
IPC分类号： H04W72/00 , H04W72/04 , H04W16/14
摘要： Method and apparatus for allocating radio resources for use by mobile user equipment (UE), including sensing available radio spectrum resources, allocating at least a portion of the sensed available resources for use by at least one UE, detecting changes in the radio resource usage situation, and modifying the allocation of resources based at least in part on the detected changes in the radio resource usage situation.

3. 发明申请

US20180294880A1 SYSTEM AND METHOD FOR COHERENT DETECTION WITH DIGITAL SIGNAL PROCESSION 审中-公开
公开(公告)号：US20180294880A1
公开(公告)日：2018-10-11
申请号：US15850782
申请日：2017-12-21
申请人： ZTE (USA) Inc.
发明人： JIANJUN YU , Jianqiang Li , Hung-Chang Chien , Zhensheng Jia
IPC分类号： H04B10/2513 , H04L27/26 , H04B10/61 , H04J14/02 , H04B10/516 , H04B10/50 , H04J14/06
CPC分类号： H04B10/548 , H04B10/5561 , H04B10/613 , H04L27/2637 , H04L27/2697
摘要： Methods and apparatus to realize high spectral efficiency in optical signals transmitted over long distances.

4. 发明授权

US10044467B2 Method and apparatus of downstream forward error correction on-off control in XG-PON1 and NG-PON2 TWDM-PON systems 有权
公开(公告)号：US10044467B2
公开(公告)日：2018-08-07
申请号：US14767838
申请日：2014-02-25
申请人： ZTE (USA) INC.
发明人： Denis A. Khotimsky
IPC分类号： H04L1/00 , H03M13/05 , H03M13/15 , H03M13/35 , H03M13/00
摘要： An apparatus and method for receiving and transmitting data is disclosed. In one exemplary embodiment, the method includes: controlling a data source output source frames at a first data rate; receiving a source frame at an encoder at the first data rate; reading a fixed number of n-byte data blocks from the source frame, wherein n is an integer; appending an (m-n)-byte parity block to each n-byte data block to form the fixed number of m-byte first code words, wherein m is an integer greater than n; prepending to the fixed number of m-byte first code words a first prefix to form an error correcting physical frame, the first prefix including an error correction indicator set to a first value and an extra data indicator set to a second value; and transmitting the error correcting physical frame at a fixed transmit data rate.

5. 发明授权

US10003423B2 Half-cycled orthogonal frequency divisional multiplexing transmission and reception 有权
公开(公告)号：US10003423B2
公开(公告)日：2018-06-19
申请号：US14891598
申请日：2014-05-15
申请人： ZTE (USA) Inc.
发明人： Jianjun Yu , Fan Li
IPC分类号： H04J11/00 , H04B10/40 , H04B10/556 , H04L25/03 , H04L27/26 , H04J14/02
CPC分类号： H04J11/00 , H04B10/5563 , H04J14/0298 , H04L25/03343 , H04L25/03821 , H04L27/263 , H04L27/2643
摘要： An optical transmitter transmits an orthogonal frequency division multiplexing symbol in which only one-half of available subcarriers are modulated with data and the remaining subcarriers are suppressed by not modulating with data. The transmission is of duration equal to half the symbol period of the OFDM symbol, resulting in a half-cycle transmission. An optical receiver receives the half-cycle transmission OFDM symbol, regenerates the full time domain representation and recovers data modulated on the one-half of available subcarriers. The modulated subcarriers and the suppressed subcarriers alternate in the frequency domain.

6. 发明申请

US20180041288A1 METHODS USING A HAND PHANTOM FOR EVALUATING TABLETS IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：US20180041288A1
公开(公告)日：2018-02-08
申请号：US15555886
申请日：2016-02-26
申请人： ZTE (USA) Inc.
发明人： CAROLYN TAYLOR
IPC分类号： H04B17/10
CPC分类号： H04B17/102 , G01R21/01 , G01R29/10 , H04B17/0085
摘要： On a tablet user equipment that is proximate to a hand phantom, a method determines the total radiated power of the user equipment includes, in response to a preset criterion, obtains a characteristic of the phantom, obtains a characteristic of an antenna of the user equipment, and obtains a radio characteristic of the user equipment. The method may also include transmitting the phantom characteristic, the antenna characteristic, and the radio characteristic to a test equipment.

7. 发明授权

US09880351B2 Directly-modulated multi-polarization optical transmitters 有权
公开(公告)号：US09880351B2
公开(公告)日：2018-01-30
申请号：US14254296
申请日：2014-04-16
申请人： ZTE (USA) INC.
发明人： Hung-Chang Chien , Zhensheng Jia , Jianjun Yu
IPC分类号： H04B10/00 , G02B6/10 , H04B10/50 , H04B10/532 , H04B10/556
CPC分类号： G02B6/105 , H04B10/5053 , H04B10/532 , H04B10/5561
摘要： The present invention relates to optical transmitters, transceivers, and transponders used for transmission of information or data in any form through a physical medium dependent (PMD) network. The speed of such networks depends, in part, on the density of information that can be transmitted through the physical medium. Optical transmitters or transceivers can be used to transmit multiple independent signals simultaneously through the same medium using different directions or axes of polarization, where the difference in the directions or axes of polarization can be used to distinguish the multiple signals at the receiver. In this invention, we use a master laser (l0) to synchronize two slave lasers (l1 and l2) by its x-polarization and y-polarization components of carrier, respectively, so that two slave lasers can be enforced to lock on exactly the same wavelength l0 with perpendicular polarization directions.

8. 发明授权

US09813197B2 Method and system for coverage enhancement of uplink VoIP 有权
公开(公告)号：US09813197B2
公开(公告)日：2017-11-07
申请号：US14374133
申请日：2013-01-28
申请人： ZTE (USA) INC.
发明人： Yifei Yuan
IPC分类号： H04J3/00 , H04L1/18 , H04L29/06 , H04W72/12 , H04W24/02
CPC分类号： H04L1/1861 , H04L1/1812 , H04L1/1822 , H04L1/1877 , H04L1/1887 , H04L65/1053 , H04W24/02 , H04W72/1263
摘要： Apparatus and methods for improving a coverage of an uplink Voice over IP (VoIP) transmission of a wireless device are disclosed. A wireless device assigns a first hybrid automatic repeat request (HARQ) process to a first VoIP packet of the wireless device. The wireless device then assigns a second HARQ process to a second VoIP packet of the wireless device. The wireless device then transmits the first and second VoIP packets to a base station.

9. 发明申请

US20170078076A1 FULL DUPLEX OPERATION IN A WIRELESS NETWORK 审中-公开
标题翻译：无线网络全双工操作
公开(公告)号：US20170078076A1
公开(公告)日：2017-03-16
申请号：US15236330
申请日：2016-08-12
申请人： ZTE Corporation , ZTE (USA) Inc.
发明人： Yonggang Fang , Li Zhang , Bo Sun , Kaiying Lv , Nan Li
IPC分类号： H04L5/14 , H04W74/08 , H04J11/00
CPC分类号： H04L5/14 , H04J11/0023 , H04L12/413 , H04W74/002 , H04W74/0808 , H04W76/00 , H04W84/12
摘要： Multiple wireless devices in a network perform full duplex communication in which the transmission path and receiving path are spatially separated to allow simultaneous transmission and receiving. The wireless devices can either be controlled using a centralized, or point, coordination function or a distributed coordination function. A full-duplex wireless device senses the medium during transmission by itself and selectively continues the transmission when a signal is sensed on the medium. A full-duplex wireless device measures signal being transmitted by its transmitter and estimates parameters that can be used to cancel the contribution of the locally transmitted signal to the locally received signal concurrently being received during the transmission. The transmit antenna and the receive antenna of a full-duplex wireless device can be configured to be spatially isolated from each other to minimize interference between the antenna functions.
摘要翻译：网络中的多个无线设备执行全双工通信，其中传输路径和接收路径在空间上分离以允许同时发送和接收。无线设备可以使用集中式或点式协调功能或分布式协调功能进行控制。全双工无线设备在传输期间自身感测介质，并且当在介质上感测到信号时选择性地继续传输。全双工无线设备测量由其发射机发送的信号，并且估计可以用于在传输期间同时接收到的本地发送信号对本地接收信号的贡献的参数。全双工无线设备的发射天线和接收天线可被配置为在空间上彼此隔离以最小化天线功能之间的干扰。

10. 发明授权

US09544031B2 Method of variable rate single user and multi user MIMO feedback for mobile communications system 有权
标题翻译：移动通信系统可变速率单用户和多用户MIMO反馈方法
公开(公告)号：US09544031B2
公开(公告)日：2017-01-10
申请号：US14667738
申请日：2015-03-25
申请人： ZTE Corporation , ZTE (USA) Inc.
发明人： David Huo , Shupeng Li , Yifei Yuan
IPC分类号： H04W4/08 , H04B7/04 , H04L25/03 , H04W24/08 , H04W72/04 , H04L5/00 , H04L25/02
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0456 , H04L5/0007 , H04L25/0204 , H04L25/03343 , H04W24/08 , H04W72/0466
摘要： A spatial channel state information (CSI) feedback technique is incorporated into multiple-input multiple-output mobile communications technologies. User equipment (UE) channel conditions are measured and, based on the measurements, codebook subsets are selected to which indices are assigned and fed back to a base station.
摘要翻译：空间信道状态信息（CSI）反馈技术被并入到多输入多输出移动通信技术中。测量用户设备（UE）信道条件，并且基于测量，选择码本子集以指派哪个索引并将其反馈给基站。

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