Distributed Q-Learning Aided Uplink Grant-Free NOMA for Massive Machine-Type Communications
Distributed Q-Learning Aided Uplink Grant-Free NOMA for Massive Machine-Type Communications
复制标题
用于大规模机器类型通信的分布式 Q-Learning 辅助上行链路无赠款 NOMA
DOI:
10.1109/jsac.2021.3078496
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发表时间:
2021-07
影响因子:
16.4
通讯作者:
Nei Kato
中科院分区:
文献类型:
--
作者:
Jiajia Liu;Zhenjiang Shi;Shangwei Zhang;Nei Kato
The explosive growth of machine-type communications (MTC) devices poses critical challenges to the existing cellular networks. Therefore, how to support massive MTC devices with limited resources is an urgent problem to be solved. Bursty traffic is an important characteristic of MTC devices, which makes it difficult for agents to learn useful experience and has a negative impact on model convergence. However, most existing reinforcement learning-based literatures assume that devices have saturate data. Towards this end, we propose two distributed Q-learning aided uplink grant-free non-orthogonal multiple access (NOMA) schemes (including all-devices distributed Q-learning (ADDQ) scheme and portion-devices distributed Q-learning (PDDQ) scheme) to maximize the number of accessible devices, where the bursty traffic of massive MTC devices is carefully considered. In order to reduce the dimension of scheduling space and mitigate the impact of bursty traffic, the idea of grouping devices as well as transmission resources and the intermittent learning mode are adopted in our schemes. Extensive numerical results demonstrate the advantages of proposed schemes from multiple perspectives.
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影响因子:
10.4
作者:
Naparstek, Oshri;Cohen, Kobi
通讯作者:
Cohen, Kobi
DOI:
10.1109/jsac.2019.2933962
发表时间:
2019-10-01
影响因子:
16.4
作者:
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Li, Geoffrey Ye
影响因子:
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作者:
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DOI:
10.1109/lcomm.2019.2896929
发表时间:
2019-02
期刊:
IEEE Communications Letters
影响因子:
--
作者:
S. Sharma;Xianbin Wang
通讯作者:
S. Sharma;Xianbin Wang
DOI:
--
发表时间:
2011-12
期刊:
--
影响因子:
--
作者:
M. G. Azar;R. Munos;M. Ghavamzadeh;H. Kappen
通讯作者:
M. G. Azar;R. Munos;M. Ghavamzadeh;H. Kappen