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156 results about "Mitigation methods" patented technology

A bycatch mitigation technique (MT) is a method that fishers or fishery managers can use to reduce catch of non-target species.

Adjusting gate pulse time intervals for reflected wave mitigation

Methods and apparatus for controlling switching in a DC-to-AC inverter to prevent overvoltages applied to an AC motor by determining the switching order of the phase voltage signals, providing gating signals at switching intervals by modulating a carrier wave with the phase voltage signals, comparing the switching intervals to a predetermined minimum time interval sufficient for reflected wave transients to dissipate, and adjusting the switching intervals to be at least equal to the predetermined minimum time interval.
Owner:ROCKWELL AUTOMATION TECH

Collision relieving method and device between vehicles in hybrid vehicle queue

The invention discloses a collision relieving method and device between vehicles in a hybrid vehicle queue. The collision relieving method between the vehicles in the hybrid vehicle queue includes the following steps that firstly, vehicle condition information of the network-connection vehicles and vehicle condition information of the non-network-connection vehicles in front of and behind the network-connection vehicles are acquired; secondly, the head vehicle and the rear vehicles in the hybrid vehicle queue are sequentially judged, if the corresponding network-connection vehicle is the head vehicle or the rear vehicles, the third step is executed, and if the corresponding network-connection vehicle is neither the head vehicle nor the rear vehicles, the first step is executed again, wherein the head vehicle is the network-connection vehicle with the braking working condition exceeding a set threshold value, and the rear vehicles are vehicles meeting the queue collision relieving requirement behind the head vehicle; thirdly, the vehicle condition information of the network-connection vehicles is received; fourthly, the expected acceleration of each network-connection vehicle in the rear vehicles is planned; fifthly, each network-connection vehicle in the rear vehicles travels according to the planned expected acceleration, and the each network-connection vehicle in the rear vehicles travels according to a vehicle following mode; and sixthly, whether each of the rear vehicles is parked or not is judged, if certain rear vehicles are parked, control is stopped, and if no rear vehicles are parked, the third step is executed again. By the adoption of the method and device, the braking space between the vehicles in the hybrid vehicle queue can be used for control.
Owner:TSINGHUA UNIV

Dead spot mitigation methods for media applications in vehicular environments

A wireless communication method has computer-implemented steps including identifying a location of a dead spot region within an expected route of a vehicle. The vehicle has a loss of wireless connectivity within the dead spot region. Lengths of time before the vehicle will arrive at the dead spot region and before the vehicle will exit the dead spot region are estimated. Audio content and / or video content are accessed from at least one source inside the vehicle and / or at least one source outside the vehicle such that playing of the content is uninterrupted while the vehicle is within the dead spot region, the accessing being dependent upon the estimated lengths of time.
Owner:ROBERT BOSCH GMBH

Interference mitigation method in cellular system based on orthogonal frequency division multiple access

An inter-cell interference mitigation method in an orthogonal frequency division multiple access (OFDM)-based cellular system includes: dividing wireless resources into a resource group for fractional frequency reuse and a resource group for removing inter-cell interference; and re-dividing the resource group for fractional frequency reuse into particular resource groups numbering the same as a number of cell types of fractional frequency reuse, and applying a maximum transmission power to a particular resource group according to a cell type for fractional frequency reuse.
Owner:ELECTRONICS & TELECOMM RES INST

Cross-correlation mitigation method and apparatus for use in a global positioning system receiver

A method and apparatus mitigating the effects of cross-correlation signals on received satellite signals in a Global Positioning System (GPS) receiver is described. MS-Assisted and MS-Based cross-correlation detection and mitigation methods and apparatus are described. A GPS search mode architecture is used to detect SV signals and identify potential cross-correlations. The GPS search modes have different coherent integration lengths and different degrees of sensitivity. After detection, measurements are logged into a database for further processing. Several cross-correlation tests are described. For example, a “Mainlobe” cross-correlation test is described that identifies the most significant cross-correlations that occur when the Doppler difference between the interfering SV signal and the target SV signal is nonzero and a multiple of 1 kHz. Appropriate C/No and Doppler thresholds, or masks, are selected and used to identify the mainlobe cross-correlations. A wide Doppler mask is used to account for the effects on cross-correlations caused by BPSK data bit modulation. Appropriate MS-Assisted and MS-Based cross-correlation masks are described. Other cross-correlation tests include “variable C/No”, “strong”, “wide Doppler” and “pre-emptive” cross-correlation detection tests.
Owner:QUALCOMM INC

High speed time-interleaved ADC gain offset and skew mitigation

Methods and apparatuses are described for timing skew mitigation in time-interleaved ADCs (TI-ADCs) that may be performed for any receive signal without any special signals during blind initialization, which may be followed by background calibration. The same gain / skew calibration metrics may be applied to baud sampled and oversampled systems, including wideband receivers and regardless of any modulation, by applying a timing or frequency offset to non-stationary sampled signals during initial training. Skew mitigation is low latency, low power, low area, noise tolerant and scalable. Digital estimation may be implemented with accumulators and multipliers while analog calibration may be implemented with adjustable delays. DC and gain offsets may be calibrated before skew calibration. The slope of the correlation function between adjacent samples may be used to move a timing skew estimate stochastically at a low adaptive rate until the skew algorithm converges.
Owner:AVAGO TECH INT SALES PTE LTD

Inter-cell interference mitigation method using spatial covariance matrix estimation method for inter-cell interference mitigation of MIMO antenna OFDM system

Disclosed is an inter-cell interference mitigation method using a spatial covariance matrix (SCM) estimation method in a multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system for mitigating interference between asynchronous cells. The inter-cell interference mitigation method includes extracting a reference symbol (RS) of a received OFDM symbol and performing channel estimation, estimating an initial SCM using the RS signal and the channel estimation result, applying time-domain sinc type weighting to the initial SCM and applying an SCM, and demodulating a data symbol with mitigated inter-cell interference using the channel estimation result and the estimated SCM. By applying time-domain sinc type weighting to SCM estimation, it is possible to reduce an SCM estimation error occurring due to a spectral leakage induced by an abrupt change in a signal at a border point between an effective sub carrier zone and a guard band zone, and a simple design of a moving average filter form for a frequency domain signal can be made instead of frequency-time-frequency domain transformation using an inverse fast Fourier transform (IFFT) and fast Fourier transfer (FFT).
Owner:RES & BUSINESS FOUND SUNGKYUNKWAN UNIV

Denial-of-service (DOS) mitigation approach based on connection characteristics

Systems and methods for an improved DDoS mitigation approach are provided. According to one embodiment, a current threshold for a network connection characteristic is established within a Denial-of-Service (DoS) mitigation device logically interposed between a protected resource of a private network and multiple client devices residing external to the private network. A number of connections between the client devices and the protected network resource are tracked. During a period of time in which the number of connections exceeds a connection count threshold: (i) for each of the connections, a measured value for the network connection characteristic is compared to the current threshold; (ii) responsive to a determination that the measured value exceeds the current threshold, the connection is dropped; and (iii) the current threshold is periodically reduced, such that only those connections complying with the current threshold are maintained.
Owner:FORTINET
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