An Energy-Efficient Topology Design and DDoS Attacks Mitigation for Green Software-Defined Satellite Network

Abstract

As the continuous in-depth research of sixth generation (6G) technology, the satellite networks in the Space-Air-Ground Integrated Network (SAGIN) have received more and more attention. However, since satellite nodes have the characteristics of limited resources and dynamic link switching, it is important to effectively save energy in satellite networks. In this paper, we focus on how to make Software-Defined Satellite Networks (SDSN) more energy efficient. First, we propose an energy consumption model for satellite networks. Based on this model, we put forward an improved network topology generation algorithm, which can comprehensively consider the link switching energy consumption and the intersatellite link energy consumption. Then, considering the huge energy consumption caused by abnormal traffic in the satellite network, we propose a DDoS mitigation mechanism in the satellite network, aiming to reduce the extra energy consumption generated by processing abnormal traffic in the satellite node. Finally, through performance evaluation, the proposed network topology generation algorithm and DDoS attack mitigation strategy can effectively reduce network energy consumption.

On the Road to 6G: Visions, Requirements, Key Technologies, and Testbeds

“…A comprehensive survey on the current status and future directions of transport SDN was given in [178]. SDN has also been studied to integrate with various other communication networks, e.g., smart grid communication [179], underwater wireless sensor networks [180], satellite networks [181], and vehicular networks [182]. In [177], the SDN was proposed to integrate with edge computing and blockchain to improve the efficiency and security of wireless network virtualization.…”

Dynamic Routings in Satellite Networks: An Overview

“…Therefore, reducing the non-negligible energy consumption in the network can contribute to the energy saving of SDSN. A new energy consumption model for multi-layer satellite networks was designed in [68]. For the model, an SDSN topology generation algorithm was introduced.…”

A Blockchain-Enabled Trusted Protocol Based on Whole-Process User Behavior in 6G Network

“…erefore, in the IAM module, we use the same authentication method to represent the trusted authentication protocol f, so as to ensure the trusted user identity. Besides, an access control method based on the Attribute-Based Access Control (ABAC) model [31] is deployed in the ACM module to represent the trusted access control protocol g. In the TDM, we deploy the same traffic detection method based on the Deep Deterministic Policy Gradient (DDPG) algorithm as in [32] to represent the trusted communication traffic protocol h. In addition, the Beta Reputation System (BRS) [33] can give a comprehensively evaluation of users' positive and negative behaviors. erefore, in this paper, we deploy the BRS in REM module to evaluate the reputation of user's sub-behavior (UIR t i , AAR t i , CTR t i ) and to provide the feedback for dynamic control.…”