High efficiency router method applied in underground wireless network
A wireless network and routing technology, applied in the field of wireless sensor network routing, to achieve the effect of saving implementation costs, providing communication quality, and optimizing propagation distance
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[0030] First, 2.4GHz sensor nodes are used to deploy in the underground roadway with a bidirectional topology. After the roadway environment is abstracted into a cylindrical structure, the propagation of wireless signals in the roadway can be divided into two types: one is near-wall propagation. In practice, the near-wall propagation will be affected by the uneven surface structure of the roadway and the geological conditions of different materials. Component interference, so the path loss is large, in this case, we use the logarithmic distance path loss model to estimate the signal strength; another kind of propagation mode is the propagation in the hole, in this case, the signal directly crosses the roadway hole , spread to the nodes deployed in parallel, this kind of propagation is not affected by the surface structure of the roadway, so the free space model can be used to estimate the signal strength. Routing requires nodes to choose the free-space mode for signal propagat...
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