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In Release 10 of TD-LTE-Advanced standard, the technique of relay is introduced to extend the network coverage, improve the cell-edge performance and increase the fairness among users. Resource allocation is an important issue in relay-enhanced TD-LTE-Advanced system, and in this paper, a downlink resource allocation algorithm considering direct link, backhaul link and access link is proposed. The...
The Electronic Stability Control System (ESC) works through regulating the engine torque and the wheel brake pressure using traction control components to minimize the differences between the actual motion and the desired motion. The Adaptive Cruise Control System (ACC) is an active security technology. According to the previously setting parameters, by tracing the speed of preceding vehicle, ACC...
In order to research the evolution of permeability and damage of fractal rock under hydraulic fracturing, a new damage variable that describing relative reduction of pore amounts as radius is bigger than r any fracturing stage is defined. Assuming the process of evolution of micro-fracturing is in accord with standard model of Logistic bifurcation theory, according to energy conservation principle,...
Considered pore pressure of the injection/production around the refracturing well under coupling liquid/solid, Mathematical models were established, which were the maximum principal stress and orientation angle of maximum principal stress induced by pore pressure around refracturing wells. Considered that the initial artificial fracture was full of incompetent and compressible fluid, affection efficient...
Considered the fractal characteristic of rock with porosity structure, a rock damage variable which describes rock damage of the reservoir of fractal structure with hydraulic fracturing is defined, and this damage variable that describes the state of rock mass is also the number of the relative reductions as the pore radius is greater than r during arbitrary loading stage. The rock mass constitutive...
The interrelated characteristics and the complexity of cementation quality affecting factors are cosidered, a new method of forecasting cementing quality based on Gray-Orthogonal wavelet network is set up. The method regards some factors affecting the cementing quality as the input parameters of the model, and regards quantifying cementation quality as the output parameter of the model. Evaluating...
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