A dynamic allocation method of low-orbit satellite Internet of Things channel resources based on sdn
A channel resource and dynamic allocation technology, applied in wireless communication, network topology, electrical components, etc., can solve problems such as network congestion, complicated business types, and delay-sensitive services that are not applicable to satellite Internet of Things, so as to reduce the impact, Guarantee the effect of access performance
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[0037] The present invention will be further described below in conjunction with the accompanying drawings.
[0038] Such as figure 1 Shown is an SDN-based method for dynamic channel resource allocation of low-orbit satellite Internet of Things, including three parts: access matching flow table calculation, dynamic allocation of satellite channel resources, and random access assisted by access control.
[0039] Part 1: Calculation of access matching flow table: For all visible satellites in the target area of a certain terminal, the ground controller calculates the distance between the coordinates of the sub-satellite points of each satellite and the coordinates of the terminal on the geographic grid, and selects the satellite with the closest distance As an access satellite of the terminal, the terminal sends access services to the access satellite.
[0040] Such as figure 2 As shown, the ground controller calculates the distance between the sub-satellite point coordinates...
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