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91. 发明申请

US20180006677A1 Wi-Fi Adaptive Transmit Antenna Selection 审中-公开
公开(公告)号：US20180006677A1
公开(公告)日：2018-01-04
申请号：US15707246
申请日：2017-09-18
申请人： Apple Inc.
发明人： Xiaowen Wang , Syed Aon Mujtaba , Vinay R. Majjigi , Joonsuk Kim
IPC分类号： H04B1/40 , H04B7/08 , H04B7/06 , H04W84/12 , H04W88/08
CPC分类号： H04B1/40 , H04B7/061 , H04B7/0817 , H04W84/12 , H04W88/08 , Y02D70/10
摘要： Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.

92. 发明授权

US09848347B2 System and method for adaptive wireless property calculations 有权
公开(公告)号：US09848347B2
公开(公告)日：2017-12-19
申请号：US14496950
申请日：2014-09-25
申请人： APPLE INC.
发明人： Tarik Tabet , Navid Damji , Syed Aon Mujtaba , Johnson Sebeni
IPC分类号： H04W24/08 , H04L5/00 , H04W52/02 , H04L27/26 , H04L25/02 , H04B7/06
CPC分类号： H04W24/08 , H04B7/0684 , H04L5/0023 , H04L5/0048 , H04L5/0082 , H04L25/022 , H04L25/0228 , H04L27/2613 , H04L27/2655 , H04W52/0229 , Y02D70/1262 , Y02D70/23 , Y02D70/24 , Y02D70/444
摘要： A station configured to perform a method for determining a wireless property such as a channel estimate, a channel estimation track, a time tracking loop, and a frequency tracking loop. The method includes determining a set of consecutive subframes in which no transmission is scheduled, placing a processor into a first power mode during at least a portion of the set of consecutive subframes, placing the processor into a second power mode during at least another portion of the set of consecutive subframes, receiving a first reference symbol when the processor is in the second power mode and calculating a wireless property based on the first reference symbol.

93. 发明授权

US09848026B2 Simultaneous wireless connections with improved efficiency 有权
公开(公告)号：US09848026B2
公开(公告)日：2017-12-19
申请号：US15001116
申请日：2016-01-19
申请人： Apple Inc.
发明人： Siegfried Lehmann , Christiaan A. Hartman , Camille Chen , Sriram Hariharan , Jianxiong Shi , Syed Aon Mujtaba , Alessio Centazzo , Donald Eng , Michael J. Giles , Craig P. Dooley , Akshay Mangalam Srivatsa , Anjali S. Sandesara , Langford M. Wasada
IPC分类号： H04L29/06 , H04W4/00 , G06F3/02 , G06F1/32 , H04W28/06
CPC分类号： H04L65/4076 , G06F1/3209 , G06F1/3278 , G06F3/0227 , H04W4/80 , H04W28/06 , Y02D10/157
摘要： An interface circuit in a computing device may communicate with user-interface devices using shared slots during time intervals. In particular, the computing device may transmit outgoing messages to the user-interface devices at a first predefined time during sequential time intervals when the user-interface devices transition from a sleep mode to a normal mode. In response, the computing device may receive incoming messages from one or more of the user-interface devices at a second predefined time following the first predefined time during the sequential time intervals. Then, the computing device may transmit a multicast message to the user-interface devices at a third predefined time during the sequential time intervals. In response to the given multicast message, one of the user-interface devices may communicate data to the computing device. Note that, in some instances, a multicast time slot may instead be used to communicate data to one of the user-interface devices.

94. 发明申请

US20170245216A1 Wi-Fi Low Energy Preamble 审中-公开
公开(公告)号：US20170245216A1
公开(公告)日：2017-08-24
申请号：US15592355
申请日：2017-05-11
申请人： Apple Inc.
发明人： Syed Aon Mujtaba , Joonsuk Kim
IPC分类号： H04W52/02 , H04W28/02
CPC分类号： H04W52/0238 , H04W28/0221 , H04W84/12 , Y02D70/00 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/26
摘要： This disclosure relates to low energy communication techniques. According to some embodiments, a wireless transmission may be received by a wireless device. The wireless transmission may include a physical layer (PHY) preamble and PHY data. The PHY preamble may include destination information indicating a destination and length information indicating a length (or duration) of the wireless transmission. The destination and length information may be included prior to a portion of the PHY preamble configured for channel estimation. The wireless device may determine whether the wireless transmission is destined to the wireless device based on the destination information. If the wireless transmission is not destined to the wireless device, the wireless device may drop a remainder of the wireless transmission.

95. 发明授权

US09712286B2 Adaptive HARQ for half duplex operation for battery and antenna constrained devices 有权
公开(公告)号：US09712286B2
公开(公告)日：2017-07-18
申请号：US14963583
申请日：2015-12-09
申请人： Apple Inc.
发明人： Tarik Tabet , Syed Aon Mujtaba
IPC分类号： H04L12/28 , H04L1/18 , H04W72/04 , H04L5/00 , H04L5/16 , H04W76/04 , H04W88/08
CPC分类号： H04L1/1812 , H04L1/1822 , H04L1/1825 , H04L1/1854 , H04L1/1896 , H04L5/0055 , H04L5/006 , H04L5/16 , H04W72/0413 , H04W72/042 , H04W76/28 , H04W88/08
摘要： A user equipment (UE) implements improved communication methods which enable uplink (UL) transmissions consistent with an UL timeline. The UE may have a transmit duty cycle and may transmit acknowledge/negative acknowledge messages to a base station according to the transmit duty cycle. Additionally, the UE may be configured to determine signal-to-interference-plus noise ratio (SINR) between the UE and the base station and compare SINR to a threshold. The UE may transmit redundancy versions of data in consecutive sub-frames with a duty cycle of two transmissions per X+1 sub-frames if SINR is equal or above the threshold and redundancy versions using a duty cycle of one transmission per X sub-frames if SINR is below the threshold. Further, the UE may be configured to communicate a number of UL HARQ processes supported by the UE, receive first information in a first sub-frame, and send second information X sub-frames after the first sub-frame.

96. 发明申请

US20170188192A1 Waveform Design for Wi-Fi Time-of-Flight Estimation 审中-公开
公开(公告)号：US20170188192A1
公开(公告)日：2017-06-29
申请号：US15218434
申请日：2016-07-25
申请人： Apple Inc.
发明人： Syed Aon Mujtaba , Xiaowen Wang
IPC分类号： H04W4/02 , G01S11/02 , H04L27/18
CPC分类号： H04W4/023 , G01S11/02 , G01S11/08 , H04L27/0008 , H04L27/18 , H04L27/2607 , H04L27/2613 , H04L27/2662 , H04L27/2675 , H04L27/2692 , H04W64/00
摘要： Some embodiments relate to a waveform design for time-of-flight estimation in a wireless communication system. The waveform may include a number N of signal tones, wherein the number N of signal tones is greater than a number M of signal tones that the receiving wireless device is configured to decode. Upon receipt of the waveform, the receiving wireless device may store a timestamp which indicates a time of receipt of the waveform. The receiving wireless device may decode M of the N signal tones. For example, the receiving wireless device may decode the middle M signal tones of the N signal tones. One or more of the transmitting or receiving wireless devices may then estimate a distance between them based at least in part on the timestamp.

97. 发明申请

US20170063670A1 Efficient Auto Detection for Next Generation WLAN 有权
标题翻译：高效自动检测下一代WLAN
公开(公告)号：US20170063670A1
公开(公告)日：2017-03-02
申请号：US15228839
申请日：2016-08-04
申请人： Apple Inc.
发明人： Joonsuk Kim , Syed Aon Mujtaba , Xiaowen Wang
IPC分类号： H04L12/721 , H04L29/06 , H04L27/26 , H04L29/08
CPC分类号： H04L45/26 , H04L27/2613 , H04L27/2666 , H04W84/12
摘要： An auto-detection scheme may be applied to a physical layer (PHY) preamble of a communications packet, such as an 802.11 packet, to identify which generation of a communication standard was used to generate the packet. A packet of a wireless transmission may be received by a wireless device. The packet may include a PHY preamble, including a first field, such as a legacy long training field (L-LTF), and a second, subsequent field, such as a non-legacy Signal field. The wireless device may determine that the first field is encoded using a Fast-Fourier Transform (FFT) of a first size, and that the second field is encoded using a FFT of a second, different size. This determining may identify a generation of the communication standard used to generate the packet. In response to the determining, the wireless device may decode the packet according to the identified generation of the communication standard.
摘要翻译：自动检测方案可以应用于诸如802.11分组的通信分组的物理层（PHY）前导码，以标识哪一代通信标准被用于生成分组。无线传输的分组可以由无线设备接收。分组可以包括PHY前导码，其包括诸如传统长训练字段（L-LTF）的第一字段，以及第二后续字段，诸如非传统信号字段。无线设备可以使用第一大小的快速傅立叶变换（FFT）来确定第一字段的编码，并且使用第二大小不同的FFT对第二字段进行编码。该确定可以标识用于生成分组的通信标准的生成。响应于确定，无线设备可以根据所识别的通信标准的生成来解码分组。

98. 发明申请

US20160345217A1 Packet-Switched Wireless Communication for Link Budget Limited Wireless Devices 审中-公开
标题翻译：链路预算有限的无线设备的分组交换无线通信
公开(公告)号：US20160345217A1
公开(公告)日：2016-11-24
申请号：US15153676
申请日：2016-05-12
申请人： Apple Inc.
发明人： Tarik Tabet , Farouk Belghoul , Samy Khay-Ibbat , Sarma V. Vangala , Rafael L. Rivera-Barreto , David Boettger , Awais M. Hussain , Syed Aon Mujtaba
IPC分类号： H04W36/00 , H04W36/30
CPC分类号： H04W36/0083 , H04B17/336 , H04B17/382
摘要： This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device.
摘要翻译：本公开涉及用于链路预算有限UE以改善与蜂窝网络的通信性能的技术。 UE可以执行信噪比（SINR）测量，并且使用这些测量来调整提供给蜂窝网络的接收信号功率值作为接收信号功率测量。 UE可以至少部分地基于SINR测量生成接收信号功率值，以便当UE具有良好的SINR但接收信号功率较差时，减少切换的可能性。 UE还可以向基站提供优选配置信息，其在链路预算受限时增强了UE的性能。配置信息可以指定被设计成为链路预算限制设备提供改进的性能的一个或多个参数值。

99. 发明授权

US09380445B2 Device and method for discovery channel hopping scheme 有权
标题翻译：发现信道跳频方案的装置和方法
公开(公告)号：US09380445B2
公开(公告)日：2016-06-28
申请号：US14252258
申请日：2014-04-14
申请人： APPLE INC.
发明人： Yuchul Kim , Young Jae Kim , Joonsuk Kim , Xiaowen Wang , Vinay Majjigi , Syed Aon Mujtaba , Dawei Zhang
IPC分类号： H04B1/7143 , H04W8/00
CPC分类号： H04W8/005 , H04B1/7143
摘要： A device and method generates a hopping scheme for mobile stations of a wireless network. The method includes receiving a number of channels N of the wireless network. The method includes generating a shuffling matrix as a function of the number of channels N, each row of the shuffling matrix being indicative of a respective one of the mobile stations, each column of the shuffling matrix being indicative of a respective broadcast time of a discovery signal in a hopping scheme. The method includes generating the hopping scheme for the mobile stations in the channels as a function of the shuffling matrix. The hopping scheme maximizes an interval between two consecutive broadcast times that any two of the mobile stations are assigned to transmit discovery signals on adjacent channels.
摘要翻译：一种设备和方法为无线网络的移动台生成跳频方案。该方法包括接收无线网络的多个信道N. 该方法包括根据通道数N的函数产生混洗矩阵，混洗矩阵的每一行表示移动站中的相应一个，混洗矩阵的每一列表示发现的相应广播时间信号在跳频方案。该方法包括根据混洗矩阵来生成信道中的移动站的跳频方案。跳频方案最大化两个连续广播时间之间的间隔，任何两个移动台被分配用于在相邻信道上发送发现信号。

100. 发明申请

US20160127007A1 Wi-Fi Adaptive Transmit Antenna Selection 有权
标题翻译： Wi-Fi自适应发射天线选择
公开(公告)号：US20160127007A1
公开(公告)日：2016-05-05
申请号：US14871756
申请日：2015-09-30
申请人： Apple Inc.
发明人： Xiaowen Wang , Syed Aon Mujtaba , Vinay R. Majjigi , Joonsuk Kim
IPC分类号： H04B1/44 , H04B7/04
CPC分类号： H04B1/40 , H04B7/061 , H04B7/0817 , H04W84/12 , H04W88/08 , Y02D70/10
摘要： Wireless communication devices (UEs) may include multiple receive (RX) chains and associated antennas, and at least one transmit (TX) chain co-located with one of the RX chains. The UE may track instant fading of the antenna gain(s) during reception of packets from an associated access point (AP) device to which the UE intends to transmit packets. The UE may also track long term antenna gain(s), using any packets received at the multiple RX chains within the UE. At a switching occasion, a decision is made by the UE whether to switch antennas. If the instant fading detection is based on packets received no later than a specified time period prior to the switching occasion, then the UE may make the switching decision based on the results of the instant fading tracking. Otherwise, the UE may make the switching decision based on the results of the long term antenna gain tracking.
摘要翻译：无线通信设备（UE）可以包括多个接收（RX）链和相关联的天线，以及与RX链中的一个共同定位的至少一个发射（TX）链。 UE可以在接收来自UE打算发送分组的相关接入点（AP）设备的分组期间跟踪天线增益的即时衰落。 UE还可以使用在UE内的多个RX链处接收的任何分组来跟踪长期天线增益。在切换时刻，由UE决定是否切换天线。如果瞬时衰落检测是基于在切换时刻之前的指定时间段之前接收的分组，则UE可以基于即时衰落跟踪的结果进行切换决定。否则，UE可以基于长期天线增益跟踪的结果进行切换决定。

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