SATELLITE-TERRESTRIAL INFORMATION NETWORK UNIFIED ROUTING METHOD BASED ON HYPERBOLIC GEOMETRY

摘要

Provided is a satellite-terrestrial information network unified routing method based on hyperbolic geometry. The method comprises: S1, mapping nodes in a satellite-terrestrial information network in a three-dimensional geographic space to a three-dimensional hypersphere by means of stereographic projection; S2, performing hyperbolic radius component setting on points mapped to the three-dimensional hypersphere, and finally mapping coordinates of the nodes in the three-dimensional geographic space to a four-dimensional hyperbolic space to obtain hyperbolic coordinates; S3, calculating an included angle between two nodes in the four-dimensional hyperbolic space by using the acquired hyperbolic coordinates; S4, when routing is performed in the satellite-terrestrial information network, calculating a hyperbolic distance between the two nodes by using the acquired hyperbolic coordinates of the nodes and the included angle between the two nodes in the four-dimensional hyperbolic space; and S5, completing greedy routing forwarding according to the calculated hyperbolic distance between the two nodes. The satellite-terrestrial information network routing does not depend on a global link state and the distributed and centralized scheduling of router node information, a large amount of routing table storage overheads can be saved, and expandability is achieved.