基于捷变波束的卫星通信网络用户随机接入技术

doi:10.11959/j.issn.2096-8930.2022002

Abstract

Abstract:

On the basis of geosynchronous earth orbit multi-beam satellite communication systems, this paper designed the process of user random access to the network and specifi c signaling interaction under the agile beam mechanism, and proposed the scheduling strategy and allocation scheme of the agile signaling beam.This scheme increased the fl exibility of access resource allocation under the premised of ensured that all users could accessed the network, eff ectively improved the utilization rate of satellite network resources.The request of user access to the satellite communication network belongs to the burst type, it is more suitable to use the random competition access, so this paper based on the general random competition access strategy, proposed an adaptive random competition access algorithm based on the heat value, based on the heat value predicted by the network side, the user selects diff erent random access strategies for access.Through the simulation and analysis of the optimization algorithm, it is proved that the algorithm could eff ectively reduced the probability of access collision under various network loads, so as to achieved the purpose of users quickly accessing the network.

Key words: satellite communication system, agile beam, user random access, contention access, slotted ALOHA

CLC Number:

TP393

Zixuan HUANG, Jiaxi ZHOU, Jing ZHANG, Zhengyu ZHANG. User Random Access Technology Based on Beam Hopping Satellite Communication System[J]. Space-Integrated-Ground Information Networks, 2022, 3(1): 9-17.

Figures/Tables 7

References 27

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