In cognitive wireless multi-hop networks,the spectrum resources gallagher fault finder battery are highly variable and diverse.A cross-layer multi-channel MAC protocol combined with QoS search was proposed.The protocol combines the on-demand QoS search with dynamic spectrum allocation via cross-layer method,which only permits the transmission nodes
Common ontology languages, construction principles and construction methods were summarized.It was considered that constructing coal mine safety ontology dr dabber boost evo atomizer replacement should adopt OWL-DL language and the construction method of cyclic acquisition method or seven-step method.Current research status of the coal mine safety
Connected vehicles in vehicular networks will lead to a smart and autonomous transportation system.These vehicles have a large number of applications that require wireless connectivity by using cellular vehicle-to-everything (C-V2X).The infrastructure of C-V2X comprises multiple roadside units (RSUs) that provide direct connectivity with the on-roa
The computing power network was primarily designed to optimize and efficiently utilize network and computing resources by connecting and integrating distributed heterogeneous computing nodes.Within this network, nodes frequently required computing resources from other nodes through trading mechanisms due to their limited local resources.The introdu
There are two classes of phononic structures that can support elastic waves with non-conventional topology, namely intrinsic and extrinsic systems.The non-conventional topology of elastic wave results from breaking time reversal symmetry (T-symmetry) of wave propagation.In extrinsic systems, energy is injected into the phononic structure to break T