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1. 发明授权

US10820291B2 Phase tracking in training fields 有权
公开(公告)号：US10820291B2
公开(公告)日：2020-10-27
申请号：US16291411
申请日：2019-03-04
申请人： QUALCOMM Incorporated
发明人： Tao Tian , Lin Yang , Bin Tian
IPC分类号： H04W4/00 , H04W56/00 , H04W72/04 , H04B7/0456 , H04L27/26 , H04B7/0452 , H04L5/00 , H04L25/02
摘要： Aspects of the present disclosure provide techniques for phase tracking in wireless communications using frames with some portions that use relatively long symbol durations.

2. 发明申请

US20160227436A1 ROBUST EARLY DETECTION THROUGH SIGNAL REPETITION IN MIXED-RATE WIRELESS COMMUNICATIONS 审中-公开
标题翻译：通过混合无线通信中的信号重复进行稳健的早期检测
公开(公告)号：US20160227436A1
公开(公告)日：2016-08-04
申请号：US15013959
申请日：2016-02-02
申请人： QUALCOMM Incorporated
发明人： Sameer Vermani , Bin Tian , Tao Tian
IPC分类号： H04W28/06 , H04L29/06
CPC分类号： H04W28/06 , H04L1/08 , H04L69/22 , H04L2001/0093
摘要： A method of wirelessly communicating includes generating, at a wireless device, a packet including a first preamble field. The method further includes generating a first repeated preamble field by multiplying the first preamble field by a first frequency-domain polarity sequence. The method further includes transmitting the packet from the wireless device. The packet includes the first preamble field and the first repeated preamble field.
摘要翻译：无线通信的方法包括在无线设备处生成包括第一前同步码字段的分组。该方法还包括通过将第一前同步码乘以第一频域极性序列来产生第一重复前同步码字段。该方法还包括从无线设备发送分组。分组包括第一前同步码字段和第一重复前导字段。

3. 发明授权

US09351176B2 Phase and amplitude tracking in the presence of a walking pilot signal 有权
标题翻译：存在步行导频信号时的相位和幅度跟踪
公开(公告)号：US09351176B2
公开(公告)日：2016-05-24
申请号：US13735937
申请日：2013-01-07
申请人： Qualcomm Incorporated
发明人： Tao Tian , Sameer Vermani , Lin Yang , Albert van Zelst
IPC分类号： H04W24/02 , H04W52/02 , H04W72/04 , H04L25/02 , H04L25/03
CPC分类号： H04W24/02 , H04L25/0204 , H04L25/0228 , H04L25/03159 , H04W52/0209 , H04W72/042
摘要： A method and apparatus for tracking amplitude and phase of a received low frequency signal comprising a walking pilot signal is disclosed, wherein the pilot signal changes in frequency a number of times according to a sequence that repeats. The design includes initializing a FIFO buffer and summing estimated channel power over the sequence to determine an initial total power. The design also includes, for a new received symbol, determining an updated power estimate for the new received symbol, placing the updated power estimate in the FIFO buffer, and removing a least current value from the FIFO buffer, and estimating amplitude of the signal using a sum of all updated power estimates in the FIFO buffer divided by the initial total power. The design may further include determining a delta phase value using maximum ratio combining scaled with a scaling factor.
摘要翻译：公开了一种用于跟踪包括步行导频信号的接收低频信号的幅度和相位的方法和装置，其中导频信号根据重复的顺序频率改变多次。该设计包括初始化FIFO缓冲器并对序列上的估计信道功率求和以确定初始总功率。该设计还包括对于新的接收符号，确定新的接收符号的更新的功率估计，将更新的功率估计放置在FIFO缓冲器中，以及从FIFO缓冲器中去除最小电流值，以及使用 FIFO缓冲器中所有更新的功率估计值除以初始总功率的总和。该设计可以进一步包括使用用比例因子缩放的最大比率组合来确定增量相位值。

4. 发明授权

US09071822B2 Methods and device for data alignment with time domain boundary 有权
标题翻译：用于与时域边界进行数据对齐的方法和设备
公开(公告)号：US09071822B2
公开(公告)日：2015-06-30
申请号：US13760233
申请日：2013-02-06
申请人： Qualcomm Incorporated
发明人： Vijayalakshmi R. Raveendran , Gordon Kent Walker , Tao Tian , Phanikumar K Bhamidipati , Fang Shi , Peisong Chen , Sitaraman Ganapathy Subramanian , Seyfullah Halit Oguz
IPC分类号： H04N11/02 , H04N19/40 , H04N5/14 , H04N5/21 , H04N21/2343 , H04N21/235 , H04N21/2389 , H04N19/159 , H04N19/147 , H04N19/172 , H04N19/30 , H04N19/149 , H04N19/115 , H04N19/61 , H04N19/107 , H04N19/114 , H04N19/132 , H04N19/14 , H04N19/137 , H04N19/142 , H04N19/154 , H04N19/18 , H04N19/187 , H04N19/194 , H04N19/65 , H04N19/89 , H04N19/86 , H04N19/87 , H04N19/577 , H04N19/36 , H04N7/01
CPC分类号： H04N19/40 , H04N5/144 , H04N5/147 , H04N5/21 , H04N7/0115 , H04N7/012 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/147 , H04N19/149 , H04N19/154 , H04N19/159 , H04N19/172 , H04N19/18 , H04N19/187 , H04N19/194 , H04N19/30 , H04N19/36 , H04N19/577 , H04N19/61 , H04N19/65 , H04N19/86 , H04N19/87 , H04N19/89 , H04N21/234309 , H04N21/2353 , H04N21/2389
摘要： Apparatus and methods of using content information for encoding multimedia data are described. A method of processing multimedia data includes obtaining content information of multimedia data, and encoding the multimedia data so as to align a data boundary with a frame boundary in a time domain, wherein said encoding is based on the content information. In another aspect, a method of processing multimedia data includes obtaining a content classification of the multimedia data, and encoding blocks in the multimedia data as intra-coded blocks or inter-coded blocks based on the content classification to increase the error resilience of the encoded multimedia data. Apparatus that can process multimedia data described in these methods are also disclosed.
摘要翻译：描述了使用内容信息来编码多媒体数据的装置和方法。一种处理多媒体数据的方法包括：获取多媒体数据的内容信息，并对多媒体数据进行编码，以使数据边界与时域中的边界对齐，其中所述编码基于内容信息。在另一方面，一种处理多媒体数据的方法包括获取多媒体数据的内容分类，以及基于内容分类将多媒体数据中的块编码为帧内编码块或帧间编码块，以增加已编码的多媒体数据的错误弹性多媒体资料还公开了可以处理在这些方法中描述的多媒体数据的装置。

5. 发明申请

US20130176879A1 PHASE AND AMPLITUDE TRACKING IN THE PRESENCE OF A WALKING PILOT SIGNAL 有权
标题翻译：在行车导航信号存在的阶段和振幅跟踪
公开(公告)号：US20130176879A1
公开(公告)日：2013-07-11
申请号：US13735937
申请日：2013-01-07
申请人： Qualcomm Incorporated
发明人： Tao Tian , Sameer Vermani , Lin Yang , Albert van Zelst
IPC分类号： H04W24/02
CPC分类号： H04W24/02 , H04L25/0204 , H04L25/0228 , H04L25/03159 , H04W52/0209 , H04W72/042
摘要： A method and apparatus for tracking amplitude and phase of a received low frequency signal comprising a walking pilot signal is disclosed, wherein the pilot signal changes in frequency a number of times according to a sequence that repeats. The design includes initializing a FIFO buffer and summing estimated channel power over the sequence to determine an initial total power. The design also includes, for a new received symbol, determining an updated power estimate for the new received symbol, placing the updated power estimate in the FIFO buffer, and removing a least current value from the FIFO buffer, and estimating amplitude of the signal using a sum of all updated power estimates in the FIFO buffer divided by the initial total power. The design may further include determining a delta phase value using maximum ratio combining scaled with a scaling factor.
摘要翻译：公开了一种用于跟踪包括步行导频信号的接收低频信号的幅度和相位的方法和装置，其中导频信号根据重复的顺序频率改变多次。该设计包括初始化FIFO缓冲器并对序列上的估计信道功率求和以确定初始总功率。该设计还包括对于新的接收符号，确定新的接收符号的更新的功率估计，将更新的功率估计放置在FIFO缓冲器中，以及从FIFO缓冲器中去除最小电流值，以及使用 FIFO缓冲器中所有更新的功率估计值除以初始总功率的总和。该设计可以进一步包括使用用比例因子缩放的最大比率组合来确定增量相位值。

6. 发明授权

US10419971B2 Robust early detection through signal repetition in mixed-rate wireless communications 有权
公开(公告)号：US10419971B2
公开(公告)日：2019-09-17
申请号：US15013959
申请日：2016-02-02
申请人： QUALCOMM Incorporated
发明人： Sameer Vermani , Bin Tian , Tao Tian
IPC分类号： H04W28/06 , H04L29/06 , H04L1/08 , H04L1/00
摘要： A method of wirelessly communicating includes generating, at a wireless device, a packet including a first preamble field. The method further includes generating a first repeated preamble field by multiplying the first preamble field by a first frequency-domain polarity sequence. The method further includes transmitting the packet from the wireless device. The packet includes the first preamble field and the first repeated preamble field.

7. 发明授权

US10237839B2 Phase tracking in training fields 有权
公开(公告)号：US10237839B2
公开(公告)日：2019-03-19
申请号：US15182551
申请日：2016-06-14
申请人： QUALCOMM Incorporated
发明人： Lin Yang , Bin Tian , Tao Tian
IPC分类号： H04J3/06 , H04W56/00 , H04W72/04 , H04B7/0456 , H04B7/0452 , H04L5/00 , H04L25/02 , H04L27/26
摘要： Aspects of the present disclosure provide techniques for phase tracking in wireless communications using frames with some portions that use relatively long symbol durations.

8. 发明授权

US09780919B2 High efficiency WLAN preamble structure 有权
公开(公告)号：US09780919B2
公开(公告)日：2017-10-03
申请号：US14322048
申请日：2014-07-02
申请人： QUALCOMM Incorporated
发明人： Sameer Vermani , Bin Tian , Albert Van Zelst , Didier Johannes Richard Van Nee , Rahul Tandra , Dung Ngoc Doan , Tao Tian
IPC分类号： H04L1/00 , H04W56/00 , H04L27/26 , H04W84/12 , H04L5/00 , H04W74/08
CPC分类号： H04L1/0072 , H04L1/0007 , H04L5/0053 , H04L27/2602 , H04L27/2657 , H04W56/0035 , H04W74/0808 , H04W84/12
摘要： Aspects of the present disclosure provide example preamble formats with repeated signal (SIG) fields that may help provide backwards compatibility and help address the effects of larger delay spreads in various wireless bands (e.g., WiFi bands).

9. 发明授权

US09439091B2 Midpacket detection schemes for clear channel assessment (CCA) 有权
标题翻译：用于清晰信道评估（CCA）的中分组检测方案
公开(公告)号：US09439091B2
公开(公告)日：2016-09-06
申请号：US14466031
申请日：2014-08-22
申请人： QUALCOMM Incorporated
发明人： Bin Tian , Eugene Jong-Hyon Baik , Sameer Vermani , Tao Tian
IPC分类号： H04W4/00 , H04W24/08 , H04L27/00 , H04W74/08 , H04W52/02 , H04L5/00 , H04W84/12
CPC分类号： H04W24/08 , H04L5/001 , H04L27/0006 , H04W52/0216 , H04W52/0229 , H04W74/0825 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/164
摘要： Certain aspects of the present disclosure provide methods and apparatus for detecting ongoing transmissions and assessing channel state, based on midpacket detection. One example method generally includes receiving signals on a primary channel; detecting, based on the received signals, occurrence or non-occurrence of a first ongoing packet transmission on a primary channel; and generating at least one of a busy signal or an idle signal based on the detection. In this manner, collisions may be avoided.
摘要翻译：本公开的某些方面提供了用于基于中间包检测来检测正在进行的传输和评估信道状态的方法和装置。一个示例性方法通常包括在主要信道上接收信号; 基于所接收的信号，检测主信道上的第一进行中分组传输的发生或不发生; 以及基于所述检测生成忙信号或空闲信号中的至少一个。以这种方式，可以避免冲突。

10. 发明申请

US20160088126A1 METHODS AND APPARATUS FOR PACKET ACQUISITION IN MIXED-RATE WIRELESS COMMUNICATION NETWORKS 有权
标题翻译：混合无线通信网络中分组获取的方法与设备
公开(公告)号：US20160088126A1
公开(公告)日：2016-03-24
申请号：US14856351
申请日：2015-09-16
申请人： QUALCOMM Incorporated
发明人： Dung Ngoc Doan , Tao Tian , Sameer Vermani , Bin Tian , Lin Yang , Eric Pierre Rebeiz , Rahul Tandra , Simone Merlin , Alfred Asterjadhi , Yan Zhou
IPC分类号： H04L29/06 , H04W72/04
CPC分类号： H04L69/22 , H04L27/261 , H04W72/04
摘要： A method of wirelessly communicating a packet includes generating, at a first wireless device, a first packet including a first preamble decodable by a plurality of devices and a second preamble decodable by only a subset of the plurality of devices. The first preamble includes a first signal field. The second preamble includes a first training field. The method further includes transmitting the first packet concurrently with one or more second packets to be transmitted by wireless devices other than the first wireless device.
摘要翻译：无线地传送分组的方法包括在第一无线设备处生成包括由多个设备可解码的第一前同步码的第一分组和仅由所述多个设备的子集解码的第二前同步码。第一前导码包括第一信号字段。第二前序部分包括第一训练场。该方法还包括与要由第一无线设备以外的无线设备发送的一个或多个第二分组同时发送第一分组。

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