191 results about "Guard band" patented technology

The invention belongs to the technical field of integrated circuit design automation, and discloses an anti-radiation standard unit automatic layout method, which adopts a two-stage reinforcement learning strategy: in the first stage, training a device layout strategy model, extracting MOS device information by analyzing a CDL file, and constructing a circuit diagram structure as state representation; generating a preliminary device layout result by using a dynamic action mask mechanism; and in the second stage, independently training the guard band insertion strategy model, and optimizing the guard band insertion position and sequence based on the candidate insertion point set so as to meet the anti-radiation design rule and reduce the wiring difficulty. The two stages both adopt a Maskable PPO algorithm, encourages gate alignment, source-drain proximity and shortest connection path through a reward function, and punishes layout conflicts and DRC violations. According to the invention, by means of the two-stage design of division of labor and cooperation, the layout efficiency and compliance of the anti-radiation standard unit are significantly improved, and the method has the characteristics of high efficiency, self-adaption and high engineering practicability.

A network entity configures a synchronization signal block (SSB) using SSB resources that convey a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) within an SSB resource area of a resource grid bounded in time by a first configured integer number of time units and bounded in frequency by a second configured integer number of physical channels. A product of the first configured integer number and the second configured integer number is a predetermined constant value, each symbol of the SSB has an equal number of resource elements (REs), and all REs in the each symbol of the SSB, except REs within a frequency guard band between any two of the PSS, the SSS, and the PBCH in the each symbol of the SSB, have non-zero values. A user equipment receives the SSB in the SSB resources as a beamformed SSB.

Methods, systems, and devices for wireless communications are described. Techniques described herein relate to schemes for managing an overlap of at least part of a tracking reference signal (TRS) with an uplink subband or a guard band in a subband full duplex (SBFD) slot or symbol. In some examples, if a user equipment (UE) and / or a network entity determines that at least a portion of a TRS is scheduled for reception in an uplink subband or a guard band of an SBFD slot or symbol, the UE and / or the network entity may: drop the TRS, puncture the portion of the TRS that overlaps with the uplink subband or the guard band; or may shift the frequency position of the TRS such that the TRS is scheduled within the downlink subband(s) of the SBFD slot or symbol.

Conventional Orthogonal frequency division multiplexing (OFDM) is unable to retain its orthogonality and suffers loss in performance in high Doppler circumstances. The present disclosure converts a signal received in delay-time domain into delay-Doppler domain and extracts a guard band region from the received converted signal. A 2-dimensional fast Fourier transform is performed on guard band region extracted from received converted signal. A 2-dimensional fast Fourier transform of the received converted signal is divided with the 2-dimensional fast Fourier transform of transmitted signal to extract phase information. A dictionary is created using a pre-defined set of values of delay and Doppler. A sparse recovery problem is formed for received converted signal using an orthogonal matching pursuit algorithm. One or more parameters are estimated by identifying one or more locations pertaining to the one or more columns corresponding to L significant non-zero locations comprised in sparse vector of sparse recovery problem.

The invention relates to the technical field of circuit performance testing, in particular to an integrated circuit aging effect prediction and circuit life reliability evaluation method. The specific implementation process comprises the following steps: acquiring a physical design netlist and a basic process library, analyzing a test load into transient upset density, and generating a time-varying excitation flow in combination with layout geometric information; dividing an aging sensitive domain by using a double-track aging difference mechanism, and performing integration processing on the time-varying excitation flow to quantify a circuit aging parameter; performing full-chip time sequence simulation on the circuit aging parameter, and predicting a performance erosion index; and calculating a dynamic redundancy retraction vector, adjusting the reduction amplitude of the guard band, and converging the evaluation in a target design interval. According to the method, the time-varying excitation flow and the sensitivity partition topology are utilized, the multi-physical field coupling effect under the dynamic load is effectively captured, the problem of prediction distortion caused by static hypothesis is solved, and the balance of the chip area, the power consumption and the reliability service life is achieved through the dynamic redundancy retraction vector optimization design protection band.

Embodiments of the present application provide a communication method and a communication apparatus, which can send a first signal on the basis of first information. The method comprises: an AIoT device sends a first signal on the basis of first information, the first information comprising one or more of the following: a first sequence configuration corresponding to the first signal; a configuration used for estimation of a non-ideal factor; a guard band configuration of the first signal; a transmit power configuration of the first signal; or a configuration of a sub-channel of the first signal. The sub-channel is configured on the basis of a system bandwidth or a transmission bandwidth or an occupied bandwidth of an AIoT system, or the sub-channel can also be configured on the basis of a transmission bandwidth or an occupied bandwidth of the first signal, and the sub-channel is used by the AIoT device to send the first signal. The first signal is applied to the AIoT system.

The invention discloses a pilot frequency guard band dynamic adjustment method and system, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: performing high-precision channel measurement based on a time delay-Doppler domain pilot frequency structure, and constructing a time-varying parameter matrix; establishing a time delay-Doppler domain resource grid mapping relation based on the time-varying parameters, and determining a pilot frequency guard band; and adaptive optimization is carried out on the pilot frequency guard band, and the range of the pilot frequency guard band is dynamically adjusted. According to the method, a double-layer self-adaptive mechanism is utilized, the multi-scale nonlinear adaptation problem of the pilot frequency protection band in a high dynamic scene is solved, the pilot frequency protection band configuration is dynamically adjusted, the pilot frequency pollution problem caused by the time delay and Doppler asymmetric change in the satellite top passing period is solved, intelligent optimization of the pilot frequency protection band configuration is achieved, and the pilot frequency protection band configuration is optimized. And meanwhile, the guard band range can be optimized in real time according to the channel quality, the anti-interference capability is enhanced when the channel is degraded, resources are quickly released when the channel is recovered, and the balance between the robustness of the system and the spectrum efficiency is considered.

Provided in the embodiments of the present application are communication methods and communication apparatuses, which can send first carriers on the basis of configurations of the first carriers. A method comprises: on the basis of a configuration of a first carrier, a first node sending the first carrier to an ambient Internet-of-Things (AIoT) device, wherein the configuration of the first carrier comprises one or more of the following: a power configuration of the first carrier, a carrier spacing configuration of the first carrier, a guard band configuration of an AIoT system, a frequency hopping configuration of the first carrier, a codebook configuration of the first carrier, or a waveform configuration of the first carrier, and the first carrier is used for carrying modulation information of the AIoT device in the AIoT system.

To provide a communication system capable of maintaining a FDD system communication between a base station apparatus and a terminal apparatus and reducing the weight and power consumption of a radio relay apparatus.SOLUTION: A service link and a feeder link use the same frequency band (shared frequency band) in which an FDD uplink band in which a plurality of frequency channels are adjacently arranged and an FDD downlink band in which a plurality of frequency channels are adjacently arranged are spaced apart from each other via a predetermined guard band. A radio relay apparatus includes a shared antenna, a frequency conversion unit that converts a frequency of an REV (reverse) link signal in a first frequency channel of an FDD uplink band into a frequency of a second frequency channel of an FDD downlink band, and converts a frequency of an FWD (foward) link signal in the second frequency channel of the FDD uplink band into a frequency of a first frequency channel of the FDD downlink band, and a single power amplifier that amplifies the REV link signal and the FWD link signal.SELECTED DRAWING: Figure 12

The invention relates to the technical field of broadband signal synthesis and high-speed digital-to-analog conversion, in particular to an oversampling-based real-time frequency interleaving digital-to-analog conversion system aliasing suppression method and system, and aims to solve the problem of spectrum aliasing caused by non-ideal characteristics of a digital sub-band decomposition filter and an analog filter under a real-time architecture of the system. In the invention, the sub-band decomposition is completed by adopting the linear phase complementary filter bank, so that distortion introduced by a transition band of a digital filter is avoided; by restraining system parameters such as passband and stopband frequencies and local oscillation frequency of a sub-band decomposition filter, a protection band is set by an oversampling mechanism, a frequency margin is reserved for a transition band of the filter, and aliasing components are suppressed. According to the method, extraction aliasing of a digital domain and mirror image aliasing of an analog domain are avoided at the same time from the system architecture, the frequency spectrum purity of output signals is improved, the method is suitable for a real-time system for processing continuous data streams, and technical support is provided for achieving a high-performance broadband signal source.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information indicating a downlink initial access signal (IAS) to random access channel (RACH) occasion association pattern, wherein the downlink IAS to RACH occasion association pattern indicates at least one of switching gaps between downlink IAS occasions and between RACH occasions or guard bands between RACH occasions. The UE may transmit, to the base station, a RACH message using a RACH occasion according to the downlink IAS to RACH occasion association pattern. Numerous other aspects are described.

A method, network node and wireless device (WD) for phase noise mitigation are disclosed. According to one aspect, a method in a network node includes receiving an orthogonal frequency division multiplex (OFDM) signal provided over a radio frequency (RF) channel that includes at least one guard band, the OFDM signal including at least one pilot signal. The method also includes mitigating phase noise based at least in part on the at least one pilot signal and further based on observations of signal content of the at least one guard band.

Protection of tubulars from premature wear in the mid-body section due to highly curved wellbores, including bowing from high axial compressive loads, or gravity induced bowing in a horizontal section of the wellbore is disclosed. It includes a method of installing a strong, wear resistant, fully encircling steel band around the midbody region of tubular joints on new and worn tubulars. Further, it does so without degrading the metallurgy or microstructure of the pipe body yet attaches the protective band with such high clamping force that it is unlikely to slip even under the most extreme service conditions. In addition, the circumferential integrity of the pipe band makes it even less likely to ever break off. A protective band includes a wear resistant hard banding weld overlay installed around the circumference of the protective band.

This invention relates to the field of computer technology, specifically to a method and apparatus for integrating third-party algorithm components based on dual-core collaboration. This application directly integrates third-party algorithm components into the BCM dual-core MCU, eliminating reliance on ZCU and CAN bus communication. This fundamentally eliminates the latency and security overhead caused by cross-ECU transmission and E2E protection, improving signal real-time performance and communication security. By clearly defining the functions and allocating resources of the BCM dual-core, a dedicated storage area is planned for the third-party algorithm components, and a standardized integration environment is built, achieving efficient and stable component integration. Simultaneously, peripheral access strategies are optimized, unnecessary protections and redundant polling are disabled, releasing idle computing power and hardware resources of the BCM and improving utilization. Without increasing the ZCU hardware cost, the chassis braking algorithm is deployed and executed locally, reducing performance losses caused by cross-domain communication and effectively improving the overall system operating efficiency and resource utilization efficiency.

The disclosed embodiments relate to an isolation method for full-duplex communication. The full-duplex antenna system includes a Tx (transmit) signal path comprising one or more elements, each element representing a power amplifier, one or more filters, and a Tx port of a Tx patch antenna operating in the Tx band to transmit an output signal to a satellite. Each of the one or more elements includes an Rx (receive) signal path, comprising a low-noise amplifier driven by the Rx port of an Rx patch antenna operating in the Rx band to receive an input signal from a satellite. The Rx band is separated from the Tx band by a guard band. The filters, together with the physical isolation between the Tx and Rx signal paths, provide sufficient isolation to reduce coupling between the Tx and Rx signal paths, thereby allowing the full-duplex antenna system to operate in full-duplex mode.

A network entity uses synchronization signal block (SSB) resources to configure SSBs, a synchronization signal block (SSB) resource delivers a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) within an SSB resource region of the resource grid defined in time by an integer number of time units of the first configuration and defined in frequency by an integer number of physical channels of the second configuration. The product of the integer number of the first configuration and the integer number of the second configuration is a predetermined constant value, each symbol of the SSB has an equal number of resource elements (REs), and all REs in each symbol of the SSB have a non-zero value, excluding REs within a frequency guard band between any two of the PSS, the SSS, and the PBCH in each symbol of the SSB. The user equipment receives an SSB in the SSB resource as a beamformed SSB.

Disclosed are techniques for radio frequency (RF) sensing. According to one aspect, a method of RF sensing comprises: collecting first channel state information (CSI) across a bandwidth comprising a plurality of subcarriers, the plurality of subcarriers comprising data subcarriers and guard band subcarriers, the first CSI comprising at least CSI from the data subcarriers for a first duration; processing at least a portion of the first CSI over a neural network to estimate a second CSI for at least the guard band subcarrier within the first duration; and performing an RF sensing operation based on the first CSI and the second CSI.

A method and apparatus for wireless communication and storage medium are provided. The apparatus includes at least one processor; and memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a guard band width associated with a symbol based on information about resource allocation to the apparatus; set a pulse-shaping parameter associated with the symbol based on the guard band width; and output the symbol having a waveform based on the pulse-shaping parameter.

Various aspects of this disclosure relate to: receiving (1502) a configuration message for subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband; and determining (1504) the transmission direction of the at least one subband, wherein the transmission direction includes a downlink, an uplink, a guard band, or a combination thereof.

This invention discloses a system and operating method for controlling ultrasonic sensors in a vehicle. The system includes: an ultrasonic sensor comprising an ultrasonic transducer that generates ultrasonic waves and a control module that controls the drive frequency of the ultrasonic waves emitted from the ultrasonic transducer, wherein multiple ultrasonic sensors are mounted externally to the vehicle; and a control unit that sets multiple drive frequencies with guard bands formed therebetween, and controls the control module to cause the multiple ultrasonic sensors to emit and receive ultrasonic waves having different drive frequencies from each other.

Protection of tubulars from premature wear in the mid-body section due to highly curved wellbores, including bowing from high axial compressive loads, or gravity induced bowing in a horizontal section of the wellbore is disclosed. It includes a method of installing a strong, wear resistant, fully encircling steel band around the midbody region of tubular joints on new and worn tubulars. Further, it does so without degrading the metallurgy or microstructure of the pipe body yet attaches the protective band with such high clamping force that it is unlikely to slip even under the most extreme service conditions. In addition, the circumferential integrity of the pipe band makes it even less likely to ever break off. A protective band includes a wear resistant hard banding weld overlay installed around the circumference of the protective band.

A method is provided for enabling Narrowband Internet of Things (NBIOT) transport over fronthaul (FH) interface between distributed unit (DU) and radio unit (RU) for at least one of 4G Long Term Evolution (LTE) network and 5G New Radio (NR) network, which method includes: receiving, by an RU capable of at least one of NBIOT inband mode and NBIOT guardband mode, i) at least one of LTE and NR in-phase and quadrature (IQ) samples associated with a first endpoint, and ii) NBIOT IQ samples associated with a second endpoint; and configuring the RU functionality to be able to combine, in at least one of frequency domain and time domain, i) the at least one of LTE and NR in-phase and quadrature (IQ) samples associated with a first endpoint, and ii) the NBIOT IQ samples associated with a second endpoint.

The automatic determination of components for Time Sensitive Networking (TSN), and more specifically the automatic determination of the Gate Duration (GD) and Guard Band (GB) for TSN may be provided. To determine the GB and / or GD for a TSN gate, a Time Error (TE) may be determined, and TSN components may be received. An Access Category (AC) and a per-AC Enhanced Distributed Channel Access (EDCA) state may be determined using the TID, wherein the per-AC EDCA includes a Contention Window (CW) minimum. Next, an Arbitration Interframe Space Number (AIFSN) of an upcoming data unit is determined using the using the AC and per-AC EDCA. The GB may be determined based on the AIFSN, the CW minimum, and the TE. The Gate Duration (GD) may be determined based on the TE and calculating a number of symbols in a MAC Protocol Data Unit (MPDU) and the upcoming data unit.

The present invention discloses a vehicle ultrasonic sensor control system including an ultrasonic sensor including an ultrasonic transducer generating ultrasonic waves and a control module controlling driving frequency of the ultrasonic waves emitted from the ultrasonic transducer, wherein a plurality of ultrasonic sensors are mounted on the outside of the vehicle; and a control unit setting a plurality of driving frequencies with a guard-band formed in between and controlling a control module so that the plurality of ultrasonic sensors emit and receive ultrasonic waves having driving frequencies different from each other.

The embodiment of the application discloses a method for reducing peak-to-average power ratio (PAPR) and a communication device, which are applied to a transmitting system with a power amplifier. In the method, the reserved resource can be determined based on the first unscheduled resource located in the transmission bandwidth and / or the second unscheduled resource located in the guard bandwidth, without using the fixed reserved resource in the traditional technology, so that the flexibility of determining the reserved resource is improved, and the flexibility of reducing the peak-to-average power ratio (PAPR) by using the frequency domain resource reservation (TR) is improved.

This application belongs to the field of communication technology, specifically relating to a transmission method, apparatus, device, readable storage medium, and computer program product. The method includes: when a terminal adopts a first frequency domain resource configuration and uplink and downlink transmissions exist simultaneously in the same time domain unit, the terminal performs a first transmission operation; wherein the first transmission operation includes at least one of the following: a transmission operation related to the preferred uplink transmission; a transmission operation related to the preferred downlink transmission; a transmission operation related to a second frequency domain resource configuration; a transmission operation related to the frequency domain resource configuration of a network-side subband full-duplex; a transmission operation related to the frequency domain resource configuration corresponding to a UL BWP; and a transmission operation related to the frequency domain resource configuration corresponding to a DL BWP; wherein the guard band of the first frequency domain resource configuration is smaller than the guard band of the second frequency domain resource configuration.

The invention discloses a wavelength division isolation anti-interference method and system for a radio frequency optical network front return signal, and the method comprises the steps: introducing an interference monitoring system which represents the quality of a radio frequency signal and the power optical noise at the same time, and constructing a wavelength interference matrix of the normalized interference intensity between any wavelength channel pairs according to the interference monitoring system; carrying out topology analysis based on the matrix, calculating the interference degree and automatically dividing interference clusters of high-interference channels to realize global perception and quantitative description of a common-fiber link interference relationship; target wavelength configuration parameters of the central wavelength, the wavelength interval, the guard band width and the optical filter bandwidth of each channel are adaptively determined by using the interference matrix and the interference cluster result, and differential widening and frequency shift are performed on the channels in the interference cluster; and finally, by controlling the adjustable light source and the adjustable optical filter, the wavelength division configuration is dynamically reconstructed along with the interference environment. Therefore, in an ARoF + PoF common-fiber transmission scene, both the anti-interference capability of the radio frequency signal and the frequency spectrum utilization rate of the optical fiber can be considered.

A communication method and apparatus, which can be applied to the field of satellite communications, such as an NTN. The method comprises: a terminal apparatus receives downlink control information, the downlink control information being used for indicating a scheduling delay parameter K, and K being a positive integer; and the terminal apparatus sends first data starting from a first time unit, the first time unit being the K-th, or the (K+Koffset)-th, or the (K+Koffset-G)-th uplink time unit after a time unit n. The time unit n is later than a time unit used for carrying downlink control information, Koffset is a predefined or preconfigured number of time units, n and Koffset are both positive integers, and G is the number of time units of a guard band within one frame period. By means of the technical solution provided in the present application, flexible scheduling can be achieved.

The application relates to the technical field of communication, and particularly discloses a data communication method based on a highway electromechanical system, which comprises the following steps: synchronously collecting strain and temperature parameters along an optical fiber, converting the strain and temperature parameters into transmission time delay variation according to predetermined physical characteristics, and generating real-time time delay dynamic data of each communication path through path integration; according to the real-time time delay dynamic data, a time delay variation file containing a trend component and a disturbance margin index is established and continuously updated for each access unit; a reference round-trip time delay of each unit is dynamically corrected according to the file in a communication station, a dynamic protection interval is determined by combining a trend change rate and a disturbance index, and an uplink time slot window with a protection band is re-distributed; through comparison between a periodically measured sample and a predicted value, a conversion relationship between an error and a physical parameter is reversely corrected to a time delay parameter based on historical credibility weighting, and adaptive optimization is realized; and the application can accurately predict and compensate time delay drift caused by dynamic deformation, and ensures reliable transmission of uplink data.

A user equipment (UE) is configured to: receive configuration information for a resource pool of sidelink connections in an unlicensed frequency band, wherein the resource pool comprises a plurality of contiguous physical resource blocks (PRBs), a first set of resource blocks (RBs) comprising a first subset of the PRBs, a second set of RBs comprising a second subset of the PRBs, and a guard band comprising a third subset of the PRBs; and transmitting a physical sidelink control channel (PSCCH) transmission or a physical sidelink shared channel (PSSCH) transmission using the resource pool.