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公开(公告)号：US10135554B1
公开(公告)日：2018-11-20
申请号：US15912668
申请日：2018-03-06
Applicant: Apple Inc.
Inventor： Konstantinos Sarrigeorgidis
IPC: H04B17/382 , H04W16/14 , H04B7/08 , H04B17/26 , H04B1/10
Abstract: An interface circuit in an electronic device may receive samples of wireless signals in a time interval, where the wireless signals are associated with the second electronic device. Then, the interface circuit may generate, based at least in part on the samples and a number of paths in a channel in a wireless environment of the electronic device, a signal spectrum corresponding to a set of estimated wireless-communication parameters. Moreover, the interface circuit may select a lower wireless-communication parameter in the set of wireless-communication parameters having an associated regression model with a fit to the signal spectrum that exceeds a statistical confidence threshold. Next, the interface circuit may identify, based at least in part on the selected lower wireless-communication parameter, samples of the wireless signal in the wireless signals associated with the line of sight between the electronic device and the second electronic device.
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公开(公告)号：US20180324782A1
公开(公告)日：2018-11-08
申请号：US16038528
申请日：2018-07-18
Applicant: Apple Inc.
Inventor： Tarik Tabet , Konstantinos Sarrigeorgidis , Moustafa M. Elsayed
IPC: H04W72/04 , H04L5/00 , H04B17/336
CPC classification number: H04W72/0406 , H04B17/336 , H04L5/0007 , H04L5/0053 , H04L5/0091 , H04L5/0094
Abstract: A mobile device (UE) may decode the Physical Control Format Indicator Channel (PCFICH) blindly, which may include obtaining resource elements (REs) that are reserved for the Physical Downlink Control Channel (PDCCH), based on a largest value of a control format indicator (CFI), finding a total number of control channel elements (CCEs) according to the obtained REs, numbering the CCEs, and decoding the PDCCH for the largest value of the CFI over the numbered CCEs. Accordingly, the UE does not need to decode the PCFICH specifically. In some cases, the UE may indicate to the network that the UE is a constrained device, and the network may transmit control information according to a value intended for use by constrained devices. The UE may receive the transmitted value, and instead of decoding the PCFICH it may decode the control information based at least on the received value.
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公开(公告)号：US20180091340A1
公开(公告)日：2018-03-29
申请号：US15713049
申请日：2017-09-22
Applicant: Apple Inc.
Inventor： Konstantinos Sarrigeorgidis , Joachim S. Hammerschmidt
IPC: H04L27/20
CPC classification number: H04L27/2017 , H03M13/23 , H03M13/41 , H04L1/0054 , H04L1/0059 , H04L27/2014 , H04L27/2085 , H04L27/2332
Abstract: Systems and methods for efficient estimation of a most likely sequence are provided. In one embodiment, an electronic device includes most likely receiver circuitry that receives a convolutional encoded signal, generates a linearized representation of the convolutional encoded Gaussian minimum-shift keying signal, resulting in a pseudo-symbol stream, estimates a most likely sequence for the pseudo-symbol stream, and decodes the pseudo-symbol stream based upon the most likely sequence.
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24.发明授权公开(公告)号：US09525453B2
公开(公告)日：2016-12-20
申请号：US14300290
申请日：2014-06-10
Applicant: Apple Inc.
Inventor： Konstantinos Sarrigeorgidis , Tarik Tabet , Syed A Mujtaba
Abstract: A transceiver device may include a transmit path that generates a modulated transmit signal based on a baseband signal, and a receive path that receives a receive signal, which is subject to third-order order distortion caused by intermodulation noise resulting from a continuous wave blocker intermodulating with transmit leakage from the transmit path. The transceiver may also include a compensation path that models portions of the transmit path and the receive path, and generates a replica signal representative of the third-order order distortion according to at least a specified function and the modeled portions of the transmit path and the receive path. The compensation path also filters the replica signal and subtracts the filtered replica signal from the receive signal to eliminate the third-order order distortion caused by the intermodulation noise. The filtering of the replica signal may be performed by programmable finite impulse response filters.
Abstract translation: 收发器设备可以包括基于基带信号生成调制的发送信号的发送路径和接收接收信号的接收路径，该接收信号受到由连续波阻塞器互调产生的互调噪声引起的三阶失真 来自发射路径的发射泄漏。 收发机还可以包括对发送路径和接收路径的部分进行建模的补偿路径，并且根据至少一个指定的功能和发送路径的建模部分和生成表示三阶失真的副本信号， 接收路径。 补偿路径还对复制信号进行滤波，并从接收信号中减去滤波后的复制信号，以消除由互调噪声引起的三阶失真。 可以通过可编程有限脉冲响应滤波器来执行复制信号的滤波。
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公开(公告)号：US20240380449A1
公开(公告)日：2024-11-14
申请号：US18613844
申请日：2024-03-22
Applicant: Apple Inc.
Inventor： Konstantinos Sarrigeorgidis , Manasa Raghavan , Yang Tang , Franz J. Eder , Andre Janssen , Xiang Chen , Jie Cui
IPC: H04B7/0456 , H04B7/0408
Abstract: Techniques described herein include solutions for utilizing dual port synchronization signal block (SSB) transmissions for multiple receive (Rx) beam selection. In some aspects, a base station transmits a first SSB with a first polarization on a first antenna port, and transmits a second SSB with a second polarization on a second antenna port. The first and second SSBs may be transmitted, for example, using a first transmission reception point (TRP). A user equipment (UE) receives the first and second SSBs, and identifies one or more optimal Rx beams for multiple-input multiple-output (MIMO) communication based on the first and second SSBs.
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Patent Agency Ranking
公开(公告)号：US11259284B2
公开(公告)日：2022-02-22
申请号：US16038528
申请日：2018-07-18
Applicant: Apple Inc.
Inventor： Tarik Tabet , Konstantinos Sarrigeorgidis , Moustafa M. Elsayed
IPC: H04W72/04 , H04L5/00 , H04B17/336
Abstract: A mobile device (UE) may decode the Physical Control Format Indicator Channel (PCFICH) blindly, which may include obtaining resource elements (REs) that are reserved for the Physical Downlink Control Channel (PDCCH), based on a largest value of a control format indicator (CFI), finding a total number of control channel elements (CCEs) according to the obtained REs, numbering the CCEs, and decoding the PDCCH for the largest value of the CFI over the numbered CCEs. Accordingly, the UE does not need to decode the PCFICH specifically. In some cases, the UE may indicate to the network that the UE is a constrained device, and the network may transmit control information according to a value intended for use by constrained devices. The UE may receive the transmitted value, and instead of decoding the PCFICH it may decode the control information based at least on the received value.
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27.发明授权公开(公告)号：US10813046B2
公开(公告)日：2020-10-20
申请号：US15933494
申请日：2018-03-23
Applicant: Apple Inc.
Inventor： Konstantinos Sarrigeorgidis , Tarik Tabet , Moustafa M. Elsayed
Abstract: A wireless user equipment (UE) device may include a receiver and transmitter. The UE device may dynamically vary the fidelity requirements imposed on the analog signal processing performed by the receiver and/or the transmitter in response factors such as: amount of signal interference (e.g., out-of-band signal power); modulation and coding scheme; number of spatial streams; extent of transmitter leakage; and size and/or frequency location of resources allocated to the UE device. Thus, the UE device may consume less power on average than a UE device that is designed to satisfy fixed fidelity requirements associated with a worst case reception scenario and/or a worst case transmission scenario.
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公开(公告)号：US20200076654A1
公开(公告)日：2020-03-05
申请号：US16676721
申请日：2019-11-07
Applicant: Apple Inc.
Inventor： Konstantinos Sarrigeorgidis , Tarik Tabet , Lydi Smaini
Abstract: Techniques are disclosed relating to DC interference cancelation in received wireless signals. Disclosed techniques may be performed in the digital domain, in conjunction with analog cancelation techniques. In some embodiments, a receiver apparatus operates a local oscillator at a frequency corresponding to a particular pilot symbol in a received wireless signal. In some embodiments the receiver estimates DC interference at the frequency based on the received pilot symbol (this may be facilitated by the fact that the contents of pilot symbols are known, because they are typically used for channel estimation). In some embodiments, the receiver apparatus is configured to cancel the DC interference based on the estimate to determine received data in subsequently received signals at the frequency. Disclosed techniques may allow narrowband receivers to efficiently use more of their allocated frequency bandwidth, rather than wasting bandwidth near the frequency of the local oscillator.
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公开(公告)号：US10034271B2
公开(公告)日：2018-07-24
申请号：US14726771
申请日：2015-06-01
Applicant: Apple Inc.
Inventor： Tarik Tabet , Konstantinos Sarrigeorgidis , Moustafa M. Elsayed
IPC: H04W72/04 , H04L5/00 , H04B17/336
CPC classification number: H04W72/0406 , H04B17/336 , H04L5/0007 , H04L5/0053 , H04L5/0091 , H04L5/0094
Abstract: A mobile device (UE) may decode the Physical Control Format Indicator Channel (PCFICH) blindly, which may include obtaining resource elements (REs) that are reserved for the Physical Downlink Control Channel (PDCCH), based on a largest value of a control format indicator (CFI), finding a total number of control channel elements (CCEs) according to the obtained REs, numbering the CCEs, and decoding the PDCCH for the largest value of the CFI over the numbered CCEs. Accordingly, the UE does not need to decode the PCFICH) specifically. In some cases, the UE may indicate to the network that it is a constrained device, and the network may transmit control information using a reserved CFI value in response to the indication that the UE is a constrained device. The UE may then not decode the PCFICH, and decode the PDCCH based on the PDCCH occupying a first four OFDM symbols.
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公开(公告)号：US09942847B2
公开(公告)日：2018-04-10
申请号：US14987805
申请日：2016-01-05
Applicant: Apple Inc.
Inventor： Moustafa M. Elsayed , Tarik Tabet , Konstantinos Sarrigeorgidis
CPC classification number: H04W52/0225 , H04W52/0216 , H04W52/0229 , H04W52/0274 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/168 , Y02D70/24 , Y02D70/26
Abstract: This disclosure relates to implementing an adaptive sleep schedule for PDCCH decoding. In some embodiments, prior to receiving PDCCH signaling, a user equipment device may schedule wireless communication circuitry to prepare for and decode the PDCCH signaling, which may include dynamically preparing a first interrupt for the wireless communication circuitry to perform the preparing for and the decoding. In response to the first interrupt, the UE may prepare for and decode the PDCCH signaling using the wireless communication circuitry. The UE may analyze the result of the decoding, which may include determining that the PDCCH signaling does not comprise information for the UE. In response to determining that the PDCCH signaling does not comprise information for the UE, the UE may schedule the wireless communication circuitry to shut down, which may include dynamically preparing a second interrupt to shut down the wireless communication circuitry.
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