A Two-Hops State-Aware Routing Strategy Based on Deep Reinforcement Learning for LEO Satellite Networks
A Two-Hops State-Aware Routing Strategy Based on Deep Reinforcement Learning for LEO Satellite Networks
复制标题
LEO卫星网络基于深度强化学习的两跳状态感知路由策略
DOI:
10.3390/electronics8090920
复制
发表时间:
2019-08
期刊:
影响因子:
2.9
通讯作者:
Wang Weidong
中科院分区:
文献类型:
--
作者:
Wang Cheng;Wang Huiwen;Wang Weidong
Low Earth Orbit (LEO) satellite networks can provide complete connectivity and worldwide data transmission capability for the internet of things. However, arbitrary flow arrival and uneven traffic load among areas bring about unbalanced traffic distribution over the LEO constellation. Therefore, the routing strategy in LEO networks should have the ability to adjust routing paths based on changes in network status adaptively. In this paper, we propose a Two-Hops State-Aware Routing Strategy Based on Deep Reinforcement Learning (DRL-THSA) for LEO satellite networks. In this strategy, each node only needs to obtain the link state within the range of two-hop neighbors, and the optimal next-hop node can be output. The link state is divided into three levels, and the traffic forwarding strategy for each level is proposed, which allows DRL-THSA to cope with link outage or congestion. The Double-Deep Q Network (DDQN) is proposed in DRL-THSA to figure out the optional next hop by inputting the two-hops link states. The DDQN is analyzed from three aspects: model setting, training process and running process. The effectiveness of DRL-THSA, in terms of end-to-end delay, throughput, and packet drop rate, is verified via a set of simulations using the Network Simulator 3 (NS3).
登录
查看更多内容
DOI:
10.1049/iet-com.2017.0325
发表时间:
2018-01
期刊:
IET Communications, 2017
影响因子:
--
作者:
Wenchao Xu;Meng Jiang;Feilong Tang;Yanqin Yang
通讯作者:
Yanqin Yang
DOI:
10.1109/12.660168
发表时间:
1998-03
期刊:
IEEE Trans. Computers
影响因子:
--
作者:
Jie Li;H. Kameda
通讯作者:
Jie Li;H. Kameda
DOI:
10.1109/tnnls.2018.2806087
发表时间:
2018-03
影响因子:
10.4
作者:
Jie Pan;X. Wang;Yuhu Cheng;Qiang Yu
通讯作者:
Jie Pan;X. Wang;Yuhu Cheng;Qiang Yu
影响因子:
7.9
作者:
Tang, Feilong;Zhang, Heteng;Yang, Laurence T.
通讯作者:
Yang, Laurence T.
影响因子:
2.7
作者:
Wang Dan Lu;Sun Qiu Ye;Li Yu Yang;Liu Xin Rui
通讯作者:
Liu Xin Rui