Capacity pre-allocation based on a traffic prediction for latency reduction in geo satellite communication systems

Abstract

Low latency is an important indicator for satellite communication systems on geo earth orbits (GEO). Transmission delay in packet networks includes access delay, propagation delay, and processing delay. The processing delay depends on the performance of the processing methods and system overload management, which is just a small fraction of the total transmission delay at low traffic load. This article dis-cusses the latency of a terminal accessing a network after a connection break. The paper proposes the scheme for maintenance a user terminal synchronization in a satellite communication net-work with bandwidth pre-assignment. The scheme is based on a traffic prediction and not requires a request from the terminal. The place of the proposed scheme in the synchronization maintenance system of the DVB-RCS2 standard is defined. A comparison of the performance of predictive traffic models is given. The latency reduction and the signal-to-noise ratio operating range extension of a user terminal from the use of the proposed scheme for maintaining synchronization is presented. The paper also presents an overview of the application of data analysis methods in the tasks of the time-frequency resource allocation in a GEO satellite communication system.