DTN-based Multi-link Bundle Protocol Architecture for Deep Space Communications

Abstract

It is characterized by a very high noise due to the environmental characteristics of the deep space. Additionally, there is noise affected by the surrounding planets or satellites. Solar noise occurs when the antenna looks directly at the sun, which is caused by the high-gain antenna used to increase SNR due to the nature of deep space communication. Noise of Moon-Earth Communication is noise generated by reflecting sunlight from the sun, which does not directly affect deep space communication, but can occur around the moon in relay cooperative communication via intermediate satellites during multimodal cooperative communication. There is noise from these various planets or satellites, which must be considered because they are not only affected by lunar exploration, but also by other planets in the case of deep space exploration. Therefore, reliable communication techniques reflecting the characteristics of deep space communication must be studied to solve problems arising from low SNR in the mentioned deep space environment. Based on various types of ACKs, the study of the Bundle Protocol's transport option, the Custom Transfer method, is conducted by using previous research on Free Space Optics (FSO) communication such as channel model and suitable coding. Through this, data loss in the DTN communication environment may be overcome. Furthermore, we propose a Deep Space Hybrid Automatic Rate Request (DS-HARQ) suitable for deep space communication environments to overcome the high error rate of DTNs. © 2022 IEEE.