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91. 发明授权

US09712217B2 Parallel channel training in multi-user multiple-input and multiple-output system 有权
公开(公告)号：US09712217B2
公开(公告)日：2017-07-18
申请号：US14582332
申请日：2014-12-24
申请人： Qinghua Li , Xiaogang Chen , Huaning Niu , Robert Stacey , Yuan Zhu , Xintian E. Lin
发明人： Qinghua Li , Xiaogang Chen , Huaning Niu , Robert Stacey , Yuan Zhu , Xintian E. Lin
IPC分类号： H04B7/04 , H04B7/0452 , G06N99/00 , H04L5/00 , H04L27/26 , H04W72/00
CPC分类号： H04B7/0452 , G06N99/005 , H04L5/0025 , H04L5/0051 , H04L27/2613 , H04W72/00
摘要： This disclosure describes systems, and methods related to parallel channel training in communication networks. A first computing device comprising one or more processors and one or more transceiver component may receive a first connection request from a second computing device, and a second connection request from a third computing device. The first computing device may send the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request. The first computing device may establish a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.

92. 发明授权

US09642180B2 Mapping an enhanced physical downlink control channel 有权
公开(公告)号：US09642180B2
公开(公告)日：2017-05-02
申请号：US13994113
申请日：2011-12-20
申请人： Xiaogang Chen , Yuan Zhu , Qinghua Li
发明人： Xiaogang Chen , Yuan Zhu , Qinghua Li
IPC分类号： H04L5/00 , H04W76/04 , H04W72/12 , H04W72/08 , H04W88/06 , H04B7/06 , H04L1/06 , H04W72/04 , H04B15/00 , H04W8/02 , H04W24/00 , H04W52/24 , H04W52/02 , H04L27/34 , H04L5/14 , H04W4/00 , H04W72/02 , H04W76/02 , H04W52/14 , H04W24/08 , H04L27/36 , H04L1/00 , H04W52/32 , H04W84/04
CPC分类号： H04W72/042 , H04B7/0697 , H04B15/00 , H04L1/0025 , H04L1/0038 , H04L1/0041 , H04L1/0045 , H04L1/06 , H04L5/0037 , H04L5/14 , H04L27/34 , H04L27/362 , H04W4/70 , H04W8/02 , H04W24/00 , H04W24/08 , H04W52/0209 , H04W52/0212 , H04W52/0251 , H04W52/0258 , H04W52/143 , H04W52/242 , H04W52/244 , H04W52/325 , H04W72/02 , H04W72/04 , H04W72/0446 , H04W72/082 , H04W72/1215 , H04W72/1278 , H04W76/19 , H04W76/28 , H04W84/042 , H04W88/06 , Y02D70/00 , Y02D70/1224 , Y02D70/1226 , Y02D70/1242 , Y02D70/1244 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/21 , Y02D70/23 , Y02D70/24 , Y02D70/444
摘要： Technology for mapping an enhanced physical downlink control channel to physical resource blocks in a radio frame is disclosed. One method comprises mapping modulated symbols in the ePDCCH to at least one control channel element. The at least one control channel element can be mapped to resource elements located in a plurality of distributed physical resource blocks in a subframe, wherein each resource block is separated by at least one additional resource block in the subframe. The mapping can also be to resource elements distributed in a single resource block in the subframe, wherein the control channel element is mapped to be distributed in frequency and time relative to other mapped resource elements in the single resource block.

93. 发明申请

US20160366688A1 OPTIMIZING WIRELESS NETWORK COMMUNICATIONS 审中-公开
标题翻译：优化无线网络通信
公开(公告)号：US20160366688A1
公开(公告)日：2016-12-15
申请号：US14871500
申请日：2015-09-30
申请人： Xiaogang Chen , Qinghua Li , Yuan Zhu , Yushu Zhang
发明人： Xiaogang Chen , Qinghua Li , Yuan Zhu , Yushu Zhang
IPC分类号： H04W72/04 , H04B7/04 , H04W72/08
CPC分类号： H04B7/0452 , H04B7/0697 , H04W72/02
摘要： Provided are systems for selecting a frequency resource allocation index that allocates a first resource unit (RU) utilized in a narrow bandwidth transmission, setting a second RU in the frequency resource allocation index as non-allocated, and receiving a stream index of a multiple-user multiple-input multiple-output (MU-MIMO) transmission, the stream index including a spatial stream indication for a station (STA) and an indication of a number of high-efficiency long training field (HE-LTF) symbols in a current PLCP Protocol Data Unit (PPDU).
摘要翻译：提供了一种用于选择分配在窄带宽传输中使用的第一资源单元（RU）的频率资源分配索引的系统，将频率资源分配索引中的第二RU设置为未分配，并且接收多分组索引的流索引，用户多输入多输出（MU-MIMO）传输，所述流索引包括站（STA）的空间流指示和当前数量的高效长训练场（HE-LTF）符号的指示 PLCP协议数据单元（PPDU）。

94. 发明申请

US20160142158A1 SYSTEMS, METHODS, AND DEVICES FOR INTERFERENCE MITIGATION IN WIRELESS NETWORKS 有权
标题翻译：用于无线网络干扰减轻的系统，方法和设备
公开(公告)号：US20160142158A1
公开(公告)日：2016-05-19
申请号：US14858975
申请日：2015-09-18
申请人： Qinghua Li , Xiaogang Chen , Yuan Zhu , Hujun Yin
发明人： Qinghua Li , Xiaogang Chen , Yuan Zhu , Hujun Yin
IPC分类号： H04B15/00 , H04L5/00 , H04W24/02
CPC分类号： H04B15/00 , H04B7/0452 , H04L5/0023 , H04L5/0048 , H04L27/2613 , H04L27/2657 , H04L27/2695
摘要： Example systems, methods, and devices for mitigating interference in wireless networks are discussed. One example method includes the operations of passing channel frequency offsets of a plurality of LTF symbols on a plurality of subcarriers through a high pass frequency band, encoding the plurality of LTF symbols with a plurality of LTF sequences across frequency, and encoding the LTF symbols in time and/or frequency. Another example includes the operations of receiving a plurality of LTF symbols on a plurality of subcarriers for channel estimation of one or more streams, removing the encoding across time, removing the encoding across frequency, and removing the LTF sequence(s), and passing the modified LTF symbols through a smoothing filter, for example, a low pass filter for removing the interference due to CFOs. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.
摘要翻译：讨论了用于减轻无线网络干扰的示例系统，方法和设备。一个示例性方法包括通过高通频带在多个子载波上传递多个LTF符号的信道频率偏移的操作，通过频率对多个LTF序列进行编码，并对LTF符号进行编码时间和/或频率。另一示例包括在多个子载波上接收多个LTF符号以用于一个或多个流的信道估计，跨越时间去除编码，去除跨频率的编码以及去除LTF序列的操作，以及将通过平滑滤波器（例如，用于消除由CFO引起的干扰）的低通滤波器来修改LTF符号。本文描述的方法，装置和系统可以应用于802.11ax或任何其它无线标准。

95. 发明申请

US20160112157A1 Auto-Detection in Wireless Communications 审中-公开
标题翻译：无线通信中的自动检测
公开(公告)号：US20160112157A1
公开(公告)日：2016-04-21
申请号：US14583136
申请日：2014-12-25
申请人： Qinghua Li , Xiaogang Chen , Yuan Zhu , Robert Stacey , Rongzhen Yang , Honggang Li
发明人： Qinghua Li , Xiaogang Chen , Yuan Zhu , Robert Stacey , Rongzhen Yang , Honggang Li
IPC分类号： H04L1/00 , H03M13/09 , G06F11/10
CPC分类号： H04L1/0061 , G06F11/1004 , H03M13/09 , H03M13/23 , H03M13/3938 , H03M13/413 , H04L1/0054
摘要： Embodiments of the disclosure provide auto-detection in wireless telecommunications. Certain embodiments provide or otherwise implement a specific sequence of bits and/or symbols for auto-detection. The specific sequence of bits can be embodied in or can include output codebits from an encoder in a communication device that can send a wireless transmission including the specific sequence. In one embodiment, the encoder can compute or otherwise generate cyclic redundancy checks (CRCs) or other types of validation checks at the communication device. The specific sequence can be determined using the payload of a packet frame. Both the manner in which the specific sequence is generated and the temporal order in which the specific sequence is received relative to other payload in the packet frame can provide specificity to the sequence.
摘要翻译：本公开的实施例提供了无线电信中的自动检测。某些实施例提供或以其它方式实现用于自动检测的比特和/或符号的特定序列。位的特定序列可以体现在可以包括来自可以发送包括特定序列的无线传输的通信设备中的编码器的输出码位中，或者可以包括输出码位。在一个实施例中，编码器可以在通信设备处计算或以其他方式生成循环冗余校验（CRC）或其他类型的验证检查。可以使用分组帧的有效载荷来确定特定序列。产生特定序列的方式和相对于分组帧中的其他有效载荷接收特定序列的时间顺序可以提供对序列的特异性。

96. 发明申请

US20160066324A1 Wireless Communication via Combined Channel Training and Physical Layer Header Signaling 审中-公开
标题翻译：通过组合信道训练和物理层报头信令进行无线通信
公开(公告)号：US20160066324A1
公开(公告)日：2016-03-03
申请号：US14583253
申请日：2014-12-26
申请人： Qinghua Li , Xiaogang Chen , Huaning Niu , Yuan Zhu
发明人： Qinghua Li , Xiaogang Chen , Huaning Niu , Yuan Zhu
IPC分类号： H04W72/04 , H04W72/00 , H04B7/06 , H04B7/04 , H04L29/06 , H04L5/00
CPC分类号： H04B7/0452 , H04B7/0617 , H04L5/0023 , H04L5/0048 , H04L5/0091 , H04L25/0232 , H04L69/22
摘要： Embodiments herein relate to wireless communication using combined channel training and physical layer header (SIG) signaling. Devices that comply with the 802.11 ax or High Efficiency WLAN (HEW) standard may generate and transmit packets that include such combined information. The combined information may be beamformed to a receiver device via an OFDM signal, which may be decoded by the receiver device to obtain subsequent data included in the signal. For example, initial training symbols associated with channel training subcarriers in the signal may be detected and used to perform a rough estimate of the channel. The rough estimate may thereafter be refined using data symbols detected from adjacent data subcarriers using the channel training symbols. In this way, data subcarriers may also be used to determine a channel response along with channel training subcarriers. Channel training information may be transmitted with data, such as user-specific information, in a single symbol.
摘要翻译：本文的实施例涉及使用组合信道训练和物理层报头（SIG）信令的无线通信。符合802.11 ax或高效WLAN（HEW）标准的设备可能会生成并传输包含这些组合信息的数据包。组合的信息可以经由OFDM信号被波束形成到接收机设备，OFDM信号可以被接收机设备解码以获得包括在信号中的后续数据。例如，可以检测与信号中的信道训练子载波相关联的初始训练符号，并用于执行信道的粗略估计。之后可以使用使用信道训练符号从相邻数据子载波检测的数据符号来粗略估计。以这种方式，数据副载波也可以用于确定与信道训练子载波一起的信道响应。信道训练信息可以用单个符号中的诸如用户特定信息的数据发送。

97. 发明申请

US20140177541A1 PDSCH RESOURCE ELEMENT MAPPING FOR THREE-CELL JOINT TRANSMISSION 有权
标题翻译：用于三节点传输的PDSCH资源元素映射
公开(公告)号：US20140177541A1
公开(公告)日：2014-06-26
申请号：US13725369
申请日：2012-12-21
申请人： QINGHUA LI , Yuan Zhu , Xiaogang Chen
发明人： QINGHUA LI , Yuan Zhu , Xiaogang Chen
IPC分类号： H04W72/08
CPC分类号： H04L5/0035 , H04L5/0023 , H04L5/005 , H04L5/0073 , H04L27/362
摘要： A PDSCH resource element mapping method is used for joint transmissions. The method solves a problem of colliding resource elements in joint transmissions, due to interference caused when PDSCH resource elements are transmitted in the resource block of one cell and cell-specific reference signals (CRSs) are transmitted in the same location of the resource block of an adjacent cell. The method is particularly beneficial for coordinated multipoint (CoMP) transmissions. The PDSCH resource element mapping method employs one of three schemes for transmitting the collided resource elements, with minimal interference. In the first scheme, one PDSCH symbol is transmitted over three consecutive CRS-collided PDSCH resource elements. In the second scheme, two PDSCH symbols are transmitted over three consecutive CRS-collided PDSCH resource elements. In a third scheme, CRS-collided resource elements are transmitted using a lower modulation order than is specified by the modulation and coding scheme.
摘要翻译：用于联合传输的PDSCH资源元素映射方法。该方法解决了由于在一个小区的资源块中发送PDSCH资源元素时引起的干扰，在联合传输中冲突资源元素的问题，并且在资源块的相同位置发送小区特定参考信号（CRS）相邻单元格。该方法对协同多点（CoMP）传输特别有利。 PDSCH资源元素映射方法采用三种方案之一，以最小的干扰来发送冲突的资源元素。在第一方案中，通过三个连续的CRS冲突的PDSCH资源元素发送一个PDSCH符号。在第二方案中，通过三个连续的CRS冲突的PDSCH资源元素发送两个PDSCH符号。在第三方案中，CRS冲突的资源元素使用比由调制和编码方案指定的更低的调制阶数来发送。

98. 发明申请

US20130287000A1 TECHNIQUES FOR FORMATTING SIGNALS FOR TRANSMISSION USING A WIRELESS NETWORK 审中-公开
标题翻译：使用无线网络格式化传输信号的技术
公开(公告)号：US20130287000A1
公开(公告)日：2013-10-31
申请号：US13932186
申请日：2013-07-01
申请人： Yuan Zhu , Qinghua Li , Xiangying Yang , Xiaogang Chen
发明人： Yuan Zhu , Qinghua Li , Xiangying Yang , Xiaogang Chen
IPC分类号： H04W72/04
CPC分类号： H04W72/042 , H04L1/1614 , H04L5/001 , H04L5/0016 , H04L5/003 , H04L5/0032 , H04L5/0051 , H04L5/0053 , H04L5/0064 , H04L5/0094 , H04L47/11 , H04L47/14 , H04L47/283 , H04L47/30 , H04W4/06 , H04W28/12 , H04W36/22 , H04W72/04 , H04W72/0406 , H04W72/0413 , H04W72/0446 , H04W72/0486 , H04W76/27 , Y02D30/30 , Y02D70/00 , Y02D70/1222 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/168 , Y02D70/23 , Y02D70/24 , Y02D70/26
摘要： Techniques are described for forming signals for transmission to a receiver. Two transmitters can form resource blocks with different Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) patterns that are orthogonal over time and/or frequency to each other. The transmitters can simultaneously transmit the same resource block but with different DMRS patterns. If a receiver is mounted with two antennas, the receiver can utilize a MIMO receiver to differentiate resource blocks from two transmitters.
摘要翻译：描述了用于形成用于传输到接收器的信号的技术。两个发射机可以形成具有随时间和/或频率彼此正交的不同物理上行链路控制信道（PUCCH）解调参考信号（DMRS）模式的资源块。发射机可以同时传输相同的资源块，但具有不同的DMRS模式。如果接收机安装有两个天线，则接收机可以利用MIMO接收机来区分两个发射机的资源块。

99. 发明申请

US20130272196A1 INTERFERENCE NOTIFICATION IN DEVICE-TO-DEVICE COMMUNICATION 有权
标题翻译：设备到设备通信中的干扰通知
公开(公告)号：US20130272196A1
公开(公告)日：2013-10-17
申请号：US13665715
申请日：2012-10-31
申请人： Honggang Li , Qinghua Li , Rui Huang , Jong-Kae Fwu , Yuan Zhu , Xiaogang Chen , Alexei Davydov
发明人： Honggang Li , Qinghua Li , Rui Huang , Jong-Kae Fwu , Yuan Zhu , Xiaogang Chen , Alexei Davydov
IPC分类号： H04W4/00
CPC分类号： H04W72/044 , H04W4/00 , H04W4/20 , H04W4/50
摘要： Systems and techniques for wireless device-to-device (D2D) communication are provided herein. A D2D group identifier may be included in wireless transmissions within D2D groups. D2D interference mitigation processes may be initiated when a D2D group identifier is detected by a wireless device outside the D2D group.
摘要翻译：本文提供了无线设备到设备（D2D）通信的系统和技术。在D2D组内的无线传输中可以包括D2D组标识符。当D2D组外的无线设备检测到D2D组标识符时，可以启动D2D干扰抑制过程。

100. 发明授权

US09954587B2 Multiple-input multiple-output cellular network communications 有权
公开(公告)号：US09954587B2
公开(公告)日：2018-04-24
申请号：US14784257
申请日：2014-03-27
申请人： Yuan Zhu , Qinghua Li , Xiaogang Chen , Hooman Shirani-Mehr
发明人： Yuan Zhu , Qinghua Li , Xiaogang Chen , Hooman Shirani-Mehr
IPC分类号： H04B7/0417 , H04W52/02 , H04L12/26 , H04W4/00 , H04W76/02 , H04L5/00 , H04W72/04 , H04W72/12 , H04W24/02 , H04W72/10 , H04W12/04 , H04L27/00 , H04W88/02 , H04L27/36
CPC分类号： H04B7/0417 , H04L5/0053 , H04L5/006 , H04L27/0008 , H04L27/362 , H04L43/16 , H04W4/70 , H04W12/04 , H04W24/02 , H04W52/0209 , H04W52/0216 , H04W52/0229 , H04W52/0235 , H04W72/0406 , H04W72/0413 , H04W72/0453 , H04W72/10 , H04W72/12 , H04W76/10 , H04W76/14 , H04W88/02 , Y02D70/00 , Y02D70/122 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/21 , Y02D70/23 , Y02D70/24
摘要： A technology for an enhanced node B (eNB) that is operable to perform beamforming using multiple-input multiple-output (MIMO) in a cellular network. One or more user equipment (UEs) can be configured to use a same or different multiple port (multi-port) channel state information reference signal (CSI-RS) pattern. Feedback reports can be received from the one or more UEs associated with the multi-port CSI-RS pattern at the eNB. A UE-specific or more UEs at the eNB using the feedback report from the one or more UEs.

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