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1. 发明申请

US20160164633A1 Integration of Viterbi Algorithm with Decision Feedback Equalization 有权
标题翻译：维特比算法与决策反馈均衡的整合
公开(公告)号：US20160164633A1
公开(公告)日：2016-06-09
申请号：US14560012
申请日：2014-12-04
申请人： Apple Inc.
发明人： Yuval Avner , Gilad Kirshenberg
IPC分类号： H04L1/00 , H04L25/03
CPC分类号： H04L1/0054 , H04L1/006 , H04L25/03057
摘要： A modified Viterbi algorithm, that integrates decision feedback equalization (DFE), is disclosed. The modified algorithm may be used especially for rate 1/2 coded transmissions through additive noise channels, where the additive noise is one-tap filtered noise. Each state in the presently-disclosed trellis holds an aggregate error and an aggregate weight of the winner path terminating at that state. Each branch of the trellis carries one or more aggregate errors, where each of the aggregate errors includes a contribution from the aggregate error of the branch's source state as well as a contribution from the difference between an expected symbol of the branch and a corresponding received symbol.
摘要翻译：公开了一种整合了决策反馈均衡（DFE）的修正维特比算法。修改的算法可以特别用于通过加性噪声信道的速率1/2编码的传输，其中加性噪声是单抽头滤波噪声。当前披露的网格中的每个状态持有在该状态终止的获胜者路径的总误差和总重量。网格的每个分支携带一个或多个聚合错误，其中每个聚合错误包括来自分支的源状态的聚合误差的贡献以及来自分支的预期符号与对应的接收符号之间的差的贡献。

2. 发明申请

US20200319329A1 Channel Estimation Combining For Secure Time of Flight Applications 审中-公开
公开(公告)号：US20200319329A1
公开(公告)日：2020-10-08
申请号：US16377323
申请日：2019-04-08
申请人： Apple Inc.
发明人： Ayelet Shahar-Doron , Michael Kerner , Gilad Kirshenberg
IPC分类号： G01S13/76 , H04L25/02 , H04W24/02 , H04W24/08
摘要： This disclosure relates to techniques for performing ranging wireless communication in a secure manner. A first wireless device may receive a plurality of independent sequences from a second wireless device. The first wireless device may perform a combined channel estimate using the sequences. The first wireless device may estimate the distance (or angle/direction, among various possibilities) between the two devices based on the combined channel estimate.

3. 发明授权

US09444581B2 Integration of Viterbi algorithm with decision feedback equalization 有权
标题翻译：维特比算法与判决反馈均衡的集成
公开(公告)号：US09444581B2
公开(公告)日：2016-09-13
申请号：US14560012
申请日：2014-12-04
申请人： Apple Inc.
发明人： Yuval Avner , Gilad Kirshenberg
IPC分类号： H04L1/00 , H04L25/03
CPC分类号： H04L1/0054 , H04L1/006 , H04L25/03057
摘要： A modified Viterbi algorithm, that integrates decision feedback equalization (DFE), is disclosed. The modified algorithm may be used especially for rate ½ coded transmissions through additive noise channels, where the additive noise is one-tap filtered noise. Each state in the presently-disclosed trellis holds an aggregate error and an aggregate weight of the winner path terminating at that state. Each branch of the trellis carries one or more aggregate errors, where each of the aggregate errors includes a contribution from the aggregate error of the branch's source state as well as a contribution from the difference between an expected symbol of the branch and a corresponding received symbol.
摘要翻译：公开了一种整合了决策反馈均衡（DFE）的修正维特比算法。修改的算法可以特别用于通过加性噪声信道的速率½编码传输，其中加性噪声是单抽头滤波噪声。当前披露的网格中的每个状态持有在该状态终止的获胜者路径的总误差和总重量。网格的每个分支携带一个或多个聚合错误，其中每个聚合错误包括来自分支的源状态的聚合误差的贡献以及来自分支的预期符号与对应的接收符号之间的差的贡献。

4. 发明申请

US20160094689A1 Robust Decoding of Wireless LAN Response Packets 有权
标题翻译：无线局域网响应数据包的鲁棒解码
公开(公告)号：US20160094689A1
公开(公告)日：2016-03-31
申请号：US14499606
申请日：2014-09-29
申请人： Apple Inc.
发明人： Koby Vainapel , Yoel Boger , Gilad Kirshenberg , Micha Anholt
IPC分类号： H04L29/06
CPC分类号： H04L69/28 , H04L1/1614 , H04L1/1685 , H04L69/22
摘要： Embodiments described herein relate to a system and method for improving a rate of success in receiving response packets, such as 802.11 Acknowledge (ACK), Block Acknowledge (BACK), and Clear-To-Send (CTS) packets. In one embodiment, a wireless device may transmit one or more first packets according to a wireless communication protocol, and may then receive a second packet. The wireless device may determine that the receiving follows the transmitting by a specific duration of time that is specified by the wireless communication protocol for a response packet to follow one or more communication packets to which it responds. Based at least in part on this determining, the wireless device may further determine that the second packet is a response packet responding to the one or more first packets, without decoding a portion of the second packet that identifies a packet type of the second packet.
摘要翻译：本文描述的实施例涉及用于提高接收响应分组（例如802.11确认（ACK），块确认（BACK））和清除发送（CTS）分组的成功率的系统和方法。在一个实施例中，无线设备可以根据无线通信协议发送一个或多个第一分组，然后可以接收第二分组。无线设备可以确定接收跟随由无线通信协议为响应分组指定的特定持续时间的发送遵循其响应的一个或多个通信分组。至少部分地基于该确定，无线设备还可以确定第二分组是响应于一个或多个第一分组的响应分组，而不对识别第二分组的分组类型的第二分组的一部分进行解码。

5. 发明申请

US20230008446A1 Electronic Devices with Concurrent Radio-Frequency Transmission and Sensing 有权
公开(公告)号：US20230008446A1
公开(公告)日：2023-01-12
申请号：US17368413
申请日：2021-07-06
申请人： Apple Inc.
发明人： Michael Kerner , Flavio De Angelis , Gilad Kirshenberg , Mik Cohen , Roman Rainov , Sharad Sambhwani
IPC分类号： H01Q21/24 , H01Q21/06 , H04B7/10 , H04B1/69
摘要： An electronic device may include communications circuitry, sensing circuitry, and a set of antennas having first and second feeds for covering different polarizations. The communications circuitry may transmit signals with a first polarization using each of the antennas and may concurrently transmit signals with a second polarization using all but a selected one of the antennas. The sensing circuitry may concurrently transmit sensing signals with the first polarization using one of the antennas and may receive sensing signals with the second polarization using the selected antenna. The sensing signals may include chirp signals generated to include muted periods that correspond to a range of frequencies that overlap frequencies at which the wireless circuitry is subject to radio-frequency interference. This may allow for concurrent wireless communications and sensing operations without interference between the communications circuitry and the sensing circuitry.

6. 发明授权

US11041948B2 Channel estimation combining for secure time of flight applications 有权
公开(公告)号：US11041948B2
公开(公告)日：2021-06-22
申请号：US16377323
申请日：2019-04-08
申请人： Apple Inc.
发明人： Ayelet Shahar-Doron , Michael Kerner , Gilad Kirshenberg
IPC分类号： H04L25/02 , G01S13/76 , H04W24/02 , H04W24/08 , H04W84/12
摘要： This disclosure relates to techniques for performing ranging wireless communication in a secure manner. A first wireless device may receive a plurality of independent sequences from a second wireless device. The first wireless device may perform a combined channel estimate using the sequences. The first wireless device may estimate the distance (or angle/direction, among various possibilities) between the two devices based on the combined channel estimate.

7. 发明授权

US09712951B2 Extended bluetooth communication modes 有权
公开(公告)号：US09712951B2
公开(公告)日：2017-07-18
申请号：US14706301
申请日：2015-05-07
申请人： Apple Inc.
发明人： Gilad Kirshenberg , Alon Paycher , Ran Katz , Yonathan Shavit
IPC分类号： H04B7/00 , H04W4/00 , H04W28/18 , H04W76/02 , H04W84/20 , H04W76/04
CPC分类号： H04W4/80 , H04W28/18 , H04W76/11 , H04W76/20 , H04W84/20
摘要： A method and system for an improved communication mode for Bluetooth wireless devices is disclosed. Packets used in the improved communication mode are encoded using a convolutional encoder and transmitted with a particular modulation index such that the improved communication mode provides an improved link margin with respect to a communication mode specified in a Bluetooth wireless communication protocol. In this regard, the improved communication mode allows Bluetooth wireless devices to continue to communicate when a communication link between the Bluetooth wireless devices degrades, whereas otherwise the connection would be dropped. Furthermore, the Bluetooth wireless devices seamlessly switch between the improved communication mode and other Bluetooth communication modes without renegotiating the connection.

8. 发明授权

US09641654B2 Robust decoding of wireless LAN response packets 有权
公开(公告)号：US09641654B2
公开(公告)日：2017-05-02
申请号：US14499606
申请日：2014-09-29
申请人： Apple Inc.
发明人： Koby Vainapel , Yoel Boger , Gilad Kirshenberg , Micha Anholt
IPC分类号： H04L12/50 , H04L29/06
CPC分类号： H04L69/28 , H04L1/1614 , H04L1/1685 , H04L69/22
摘要： Embodiments described herein relate to a system and method for improving a rate of success in receiving response packets, such as 802.11 Acknowledge (ACK), Block Acknowledge (BACK), and Clear-To-Send (CTS) packets. In one embodiment, a wireless device may transmit one or more first packets according to a wireless communication protocol, and may then receive a second packet. The wireless device may determine that the receiving follows the transmitting by a specific duration of time that is specified by the wireless communication protocol for a response packet to follow one or more communication packets to which it responds. Based at least in part on this determining, the wireless device may further determine that the second packet is a response packet responding to the one or more first packets, without decoding a portion of the second packet that identifies a packet type of the second packet.

9. 发明申请

US20150327001A1 EXTENDED BLUETOOTH COMMUNICATION MODES 有权
标题翻译：扩展蓝牙通信模式
公开(公告)号：US20150327001A1
公开(公告)日：2015-11-12
申请号：US14706301
申请日：2015-05-07
申请人： Apple Inc.
发明人： Gilad Kirshenberg , Alon Paycher , Ran Katz , Yonathan Shavit
IPC分类号： H04W4/00 , H04W76/02 , H04W28/18
CPC分类号： H04W4/80 , H04W28/18 , H04W76/11 , H04W76/20 , H04W84/20
摘要： A method and system for an improved communication mode for Bluetooth wireless devices is disclosed. Packets used in the improved communication mode are encoded using a convolutional encoder and transmitted with a particular modulation index such that the improved communication mode provides an improved link margin with respect to a communication mode specified in a Bluetooth wireless communication protocol. In this regard, the improved communication mode allows Bluetooth wireless devices to continue to communicate when a communication link between the Bluetooth wireless devices degrades, whereas otherwise the connection would be dropped. Furthermore, the Bluetooth wireless devices seamlessly switch between the improved communication mode and other Bluetooth communication modes without renegotiating the connection.
摘要翻译：公开了一种用于蓝牙无线设备的改进的通信模式的方法和系统。在改进的通信模式中使用的分组使用卷积编码器进行编码，并以特定的调制索引进行传输，使得改进的通信模式相对于蓝牙无线通信协议中指定的通信模式提供了改进的链路余量。在这方面，当蓝牙无线设备之间的通信链路降级时，改进的通信模式允许蓝牙无线设备继续通信，否则连接将被丢弃。此外，蓝牙无线设备在改进的通信模式和其他蓝牙通信模式之间无缝地切换，而不重新协商连接。

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