Patent classifications
H04B2001/71365
Narrowband frequency hopping mechanisms to overcome bandwidth restrictions in the unlicensed frequency spectrum
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In one example, the apparatus may be a base station. In certain configurations, the apparatus may transmit information indicating a narrowband frequency hopping pattern to at least one UE. In certain aspects, the narrowband frequency hopping pattern may correspond to a plurality of frames. In certain other aspects, the plurality of frames may include at least one non-anchor channel and being associated with a plurality of anchor channels. The apparatus may communicate with the at least one UE using the narrowband frequency hopping pattern. In certain aspects, communication on the plurality of anchor channels may occur during the same frames.
Wakeup synchronization for frequency hopping systems
A frequency hopping wireless communication device (30) selects the most efficient synchronization procedure given the circumstances of the wireless communication device (30) upon wake-up from a sleep mode. Generally, the wireless communication device (30) assesses the timing deviation of the wireless communication device (30) within the frequency hopping pattern upon waking up from a sleep mode, selects a synchronization procedure responsive to the timing deviation, and implements synchronization using the selected synchronization procedure.
LOW-POWER, FREQUENCY-HOPPING, WIDE-AREA NETWORK WITH RANDOM MEDIUM ACCESS
A hopping spread-spectrum wireless network for IoT applications. The network includes mobile devices with unsynchronized local clocks that transmit including, in a preamble portion, a plurality of sync words, each combined with at least one instance of a sequential index. The hopping frequencies at which the sync word are transmitted are different. This arrangement helps detection and synchronization of the signals, despite the unavoidable frequency mismatches and collisions.
ANTENNA IMPEDANCE AND FREQUENCY TUNING USING PHYSICAL-INTERACTION DETECTION AIDED BY MACHINE LEARNING
A method, user equipment, and system are disclosed for adjusting a user equipment (UE) configuration based on physical factors at the UE. The method comprises receiving, by a neural network circuit, inputs related to a physical interaction with the UE, the inputs including at least one of a first input value associated with a reflection coefficient of the UE, a second input value associated with a frequency band for transmitting or receiving a signal with the UE, and a third input value associated with a carrier frequency for transmitting or receiving the signal with the UE, outputting output values associated with detecting a use case of the physical interaction or associated with adjusting at least one of an antenna impedance and an antenna aperture of the UE, and adjusting at least one of an impedance tuner circuit and an aperture tuner circuit of the UE based on the output values.
OPPORTUNISTIC FREQUENCY SWITCHING FOR FRAME BASED EQUIPMENT
Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.
Wakeup Synchronization for Frequency Hopping Systems
A frequency hopping wireless communication device (30) selects the most efficient synchronization procedure given the circumstances of the wireless communication device (30) upon wake-up from a sleep mode. Generally, the wireless communication device (30) assesses the timing deviation of the wireless communication device (30) within the frequency hopping pattern upon waking up from a sleep mode, selects a synchronization procedure responsive to the timing deviation, and implements synchronization using the selected synchronization procedure.
SYSTEMS AND METHODS FOR FREQUENCY HOPPING WAVEFORMS
Systems and methods for reprogramming a Single Channel Ground and Airborne Radio System (SINCGARS) having a SINCGARS frequency-hopping waveform with a fixed retuning period operable in a network of SINCGARS. A system includes a controller programmed with a modified frequency-hopping waveform having one or more retuning periods, each of the one or more retuning periods being shorter in duration than the fixed retuning period of the conventional SINCGARS waveform, the modified frequency-hopping waveform compatible with each of the SINCGARS in the network. An interface is provided for programming each of the devices with the modified waveform.
NARROWBAND FREQUENCY HOPPING MECHANISMS TO OVERCOME BANDWIDTH RESTRICTIONS IN THE UNLICENSED FREQUENCY SPECTRUM
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In one example, the apparatus may be a base station. In certain configurations, the apparatus may transmit information indicating a narrowband frequency hopping pattern to at least one UE. In certain aspects, the narrowband frequency hopping pattern may correspond to a plurality of frames. In certain other aspects, the plurality of frames may include at least one non-anchor channel and being associated with a plurality of anchor channels. The apparatus may communicate with the at least one UE using the narrowband frequency hopping pattern. In certain aspects, communication on the plurality of anchor channels may occur during the same frames.
FREQUENCY GENERATOR AND ASSOCIATED METHOD
A frequency generator is disclosed. The frequency generator is for generating an oscillator clock according to a reference clock, and the frequency generator is used in a frequency hopping system that switches a carrier frequency among a plurality of channels, and the carrier frequency further carries a modulation frequency for data transmission. The frequency generator includes: a frequency hopping and modulation control unit arranged for generating a current channel according to a channel hopping sequence and a frequency command word (FCW) based on the reference clock, wherein the modulation frequency is higher than a frequency of the reference clock; a reference phase generating unit arranged for generating a reference phase according to the reference clock, the modulation clock, the first FCW, the second FCW, and the third FCW; a digital-controlled oscillator (DCO) arranged for to generating the oscillator clock according to the reference phase. An associated method is also disclosed.
Fast frequency hopping of modulated signals
An apparatus is comprised of a processor, a fast-locking Phase-Locked Loop Waveform Generator (PLLWG), an amplifier circuit, and a voltage controlled oscillator (VCO). The processor generates data program signals to program the PLLWG and generates a trigger command signal instructing the PLLWG to generate an analog tuning signal. The PLLWG, coupled to the processor, generates the analog tuning signal based on the trigger command signal. The amplifier circuit, coupled to the PLLWG, receives the analog tuning signal, amplify the analog tuning signal, and generates a control voltage. The VCO, coupled to the amplifier circuit, receives the control voltage and amplifies the control voltage to generate an amplified Radio Frequency (RF) channel frequency signal.