-
公开(公告)号：US20250062770A1
公开(公告)日：2025-02-20
申请号：US18799117
申请日：2024-08-09
Applicant: NXP B.V.
Inventor： Mathieu Périn , Stefano Dal Toso , Khurram Waheed
Abstract: Provided is a phase-lock loop that includes: an oscillator having an input for receiving a control signal and an output for providing an output signal having a frequency based on the control signal; a phase detector having a first input for receiving a reference signal, a second input coupled to the output of the oscillator for receiving a feedback signal, and an output for providing a phase-error signal that is indicative of a phase difference between the reference signal and the feedback signal; and a loop filter having a first input coupled to the output of the phase detector, a second input for receiving a proportional-phase-compensation value, and an output for providing the control signal to the oscillator. The control signal comprises a proportional component which is a combination of the phase-error signal and the proportional-phase-compensation value.
-
公开(公告)号：US20220330180A1
公开(公告)日：2022-10-13
申请号：US17224403
申请日：2021-04-07
Applicant: NXP B.V.
Inventor： Raja Venkatesh Tamma , Khurram Waheed
Abstract: A wireless communication system (100) estimates a carrier frequency offset between wireless devices (101, 102) by configuring the devices through exchanging packet configuration packets (121, 125) to specify a carrier frequency offset fingerprint (CFOF) sequence in a measurement packet (133, 136) which is transmitted between the wireless devices, where the CFOF sequence in the measurement packet includes a prefix component (31), one or more signature segments (32), and a suffix component (33) for performing CFO measurements at the wireless devices which each process IQ samples corresponding to the signature segments in the received measurement packet by correlating the IQ samples against a reference vector to generate, for each of the one or more signature segments, a carrier frequency offset estimate between the first and second wireless devices.
-
公开(公告)号：US20220272633A1
公开(公告)日：2022-08-25
申请号：US17184035
申请日：2021-02-24
Applicant: NXP B.V.
Inventor： Khurram Waheed , Steven Michael Bosze
IPC: H04W52/02
Abstract: A wireless communication system including a radio, a processing circuit including a processor and wake on radio circuitry. The wake on radio circuitry uses programmed descriptors to autonomously schedule transitioning into and out of sleep mode to periodically awaken and turn on the radio and perform at least one radio frequency deterministic function while the processor remains in a low power state. The deterministic functions may include a receive function, a transmit function, or a combination of both. The descriptors may be programmed according to any one of different scheduling modes supported by different communication protocols including a timeslot mode and a constant-interval mode. The wake on radio circuitry includes a scheduler that coordinates with protocol circuitry of the radio for performing one or more deterministic functions. The scheduler may program a sleep controller for scheduling sleep modes between communication sessions for performing the deterministic functions.
-
公开(公告)号：US12231136B2
公开(公告)日：2025-02-18
申请号：US17655399
申请日：2022-03-18
Applicant: NXP B.V.
Inventor： Mathieu Perin , Stefano Dal Toso , Khurram Waheed , Claudio Gustavo Rey
Abstract: A type I phase locked loop (PLL) includes an oscillator and a feedback path to a phase detector. A first frequency and first relative phase of a first output signal are locked to a frequency and a phase of a first input signal. A second frequency and second relative phase of a second output signal are locked to a frequency and a phase of a second input signal. A correction to the PLL is applied to perform one of: adjusting the second relative phase to equal the first relative phase and adjusting the oscillator frequency.
-
公开(公告)号：US12197626B2
公开(公告)日：2025-01-14
申请号：US17644195
申请日：2021-12-14
Applicant: NXP B.V.
Inventor： Khurram Waheed
Abstract: Securing protocol keys in a communication node comprises transferring a protocol access key stored in a secure enclave of a secure host platform to a secure key store in a communication platform via a secure transfer. The protocol access key which is plaintext is secure from access by a host processor of the secure host platform. A protocol key stored in the secure enclave is encrypted to an encrypted protocol key. The encrypted protocol key is transferred from the secure enclave to the communication platform over an unsecure bus. The encrypted protocol key is deciphered based on the protocol access key in the communication platform to form the protocol key. The protocol key which is plaintext is secured from access by the host processor, the communication controller, or both.
-
Patent Agency Ranking
公开(公告)号：US11777862B2
公开(公告)日：2023-10-03
申请号：US17504794
申请日：2021-10-19
Applicant: NXP B.V.
Inventor： Khurram Waheed , Yaoqiao Li
CPC classification number: H04L47/27 , H04W56/001
Abstract: Disclosed is a method of operating a low power wireless receiver in which a radio is periodically operable for receive intervals with sleep intervals therebetween and comprising a sleep clock having a sleep clock accuracy. A first transmission or packet is received. Based on a start moment of the first received packet, and an expected interval between packets, a nominal start moment is determined to start the radio for a packet window until a nominal end moment, for receiving a second packet; the packet window duration is extended in dependence on an estimated drift based on the SCA to provide a widened window. A start moment of a second received packet is measured within the widened window. An actual drift is calculated, from the start moment of the second packet; and an actual start moment and an actual window duration is determined, for receiving a third packet, based on the actual drift.
-
公开(公告)号：US20250055466A1
公开(公告)日：2025-02-13
申请号：US18798617
申请日：2024-08-08
Applicant: NXP B.V.
Inventor： Mathieu Périn , Stefano Dal Toso , Khurram Waheed
Abstract: Provided is a phase-lock loop gear shifter that includes: an input for receiving a loop gain that is dynamically controllable; an input for receiving a phase-error signal; a subtractor configured to provide a gain difference between the loop gain input at a second time and the loop gain input at a first time, the first time being earlier than the second time; a module that determines a characteristic phase-error value based on the phase-error signal; and a multiplier that multiplies the gain difference by the characteristic phase-error value to provide a control-signal correction value.
-
公开(公告)号：US12041561B2
公开(公告)日：2024-07-16
申请号：US17224403
申请日：2021-04-07
Applicant: NXP B.V.
Inventor： Raja Venkatesh Tamma , Khurram Waheed
CPC classification number: H04W56/001 , H04L69/22 , H04W4/80
Abstract: A wireless communication system (100) estimates a carrier frequency offset between wireless devices (101, 102) by configuring the devices through exchanging packet configuration packets (121, 125) to specify a carrier frequency offset fingerprint (CFOF) sequence in a measurement packet (133, 136) which is transmitted between the wireless devices, where the CFOF sequence in the measurement packet includes a prefix component (31), one or more signature segments (32), and a suffix component (33) for performing CFO measurements at the wireless devices which each process IQ samples corresponding to the signature segments in the received measurement packet by correlating the IQ samples against a reference vector to generate, for each of the one or more signature segments, a carrier frequency offset estimate between the first and second wireless devices.
-
公开(公告)号：US20230091838A1
公开(公告)日：2023-03-23
申请号：US17823591
申请日：2022-08-31
Applicant: NXP B.V.
Inventor： Frederic Darthenay , Khurram Waheed
Abstract: A receiver path circuit includes a first stage, a down-sampler and a second stage. The first stage is configured to filter a mixer-output-signal received from a mixer and provide a first-stage-output-signal. The down-sampler is configured to down-sample the first-stage-output-signal to provide a transition-signal having a transition-frequency. The transition-frequency is lower than the frequency of the first-stage-output-signal. The second stage includes a switched-capacitor circuit that is configured to filter and reduce the frequency of the transition-signal in order to provide a second-stage-output-signal to an ADC.
-
公开(公告)号：US20230185970A1
公开(公告)日：2023-06-15
申请号：US17644195
申请日：2021-12-14
Applicant: NXP B.V.
Inventor： Khurram Waheed
CPC classification number: G06F21/72 , G06F21/602 , G06F21/6218
Abstract: Securing protocol keys in a communication node comprises transferring a protocol access key stored in a secure enclave of a secure host platform to a secure key store in a communication platform via a secure transfer. The protocol access key which is plaintext is secure from access by a host processor of the secure host platform. A protocol key stored in the secure enclave is encrypted to an encrypted protocol key. The encrypted protocol key is transferred from the secure enclave to the communication platform over an unsecure bus. The encrypted protocol key is deciphered based on the protocol access key in the communication platform to form the protocol key. The protocol key which is plaintext is secured from access by the host processor, the communication controller, or both.
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.018 seconds)
