Predictable inter-satellite routing method based on link utility function

The invention discloses a predictable inter-satellite routing method based on a link utility function, and belongs to the technical field of wireless communication. The invention provides a predictable inter-satellite routing method aiming at the problems of frequent network topology change and intermittent connection of inter-satellite links caused by relative movement between satellite nodes in a low-orbit satellite network. Giving an inter-satellite link comprehensive utility function according to the signal-to-noise ratio, the duration and the overall time delay, and obtaining an inter-satellite link weighted space-time diagram based on the utility function by using a channel sensing-oriented adaptive algorithm; according to the comprehensive utility value of the inter-satellite link, a predictable optimal inter-satellite route is obtained by using a distributed deep learning algorithm, so that the packet loss rate, the congestion value and the end-to-end delay of the inter-satellite link are reduced on t