An Energy Sensitive and Congestion Balance Routing Scheme for Non-Terrestrial-Satellite-Network (NTSN)

Abstract

Recently, non-terrestrial-satellite-networks (NTSN) have attracted more attention due to excellent performance. NTSN specifically refers to a mega satellite constellation network. Global coverage, low latency and high data rate make global interconnection possible. However, the lack of on-board energy degrades the efficiency of the network system. To solve those pressing problems, an energy sensitive and congestion balance (ESCB) routing scheme is proposed in this paper. To compensate for the limited energy of satellites, a tubular sliding time window (TSTW) model is proposed. The residual energy can be predicted by it and a multi-objective algorithm is applied to calculate the routing path. Energy constraints, network congestion and latency are taken into account in the specific algorithm. A traffic model consisting of two different services is introduced as a verification system. Simulations demonstrate that the specific routing scheme achieves energy balance and congestion avoidance. In addition, comparison results demonstrate that ESCB is superior to the virtual-topology-based shortest path (VT-SP) routing algorithm.

MOLM: Alleviating Congestion through Multi-Objective Simulated Annealing-Based Load Balancing Routing in LEO Satellite Networks

“…Taking into account realtime inter-satellite link states, this method calculates the next-hop routes and forwarding tables on each satellite, enhancing real-time performance and reducing the computational load on satellites. Jiang et al [14] proposed an energy-sensitive and congestion-balanced (ESCB) routing scheme. To address the limited energy resources of satellites, they introduced a tubular sliding time window (TSTW) model.…”

A Performance Evaluation Platform for Mega Satellite Constellation Network

“…Peng et al [6] proposed the performance evaluation of the three constellations Starlink, Oneweb and Telesat. Shaochi et al [7] introduced a ground station deployment scheme based on satellite network throughput evaluation. However, these simulations apply only to specific designs and are not general.…”