Generalized Virtual Full-Duplex Relaying Protocol Based on Buffer-Aided Half-Duplex Relay Nodes
Generalized Virtual Full-Duplex Relaying Protocol Based on Buffer-Aided Half-Duplex Relay Nodes
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DOI：
10.1109/glocom.2017.8254954
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发表时间：
2017-12
期刊：
影响因子：
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通讯作者：
Miharu Oiwa;S. Sugiura
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文献类型：
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作者：
Miharu Oiwa;S. Sugiura
在本文中，我们提出了一种新的全双工中继协议，该协议依赖于具有数据缓冲区的半双工中继节点。与传统的半双工中继协议相比，该协议的传输速率提高了一倍。在该方案中，多个中继节点接收一个源数据包，而单个中继节点在同一时隙向目的节点发送一个缓冲数据包。具体来说，我们的协议利用了多个源到中继（SR）广播链路，而不是传统的缓冲辅助全双工协议的单个SR单播链路，因此提供了额外的设计自由度。基于马尔可夫链模型，给出了中断概率和平均包延迟的理论边界。数值结果表明，所提出的全双工协议能够获得比以前的全双工最大-最大中继选择方案更低的中断概率，并且在不增加任何额外成本的情况下实现了更低的中断概率。
In this paper, we propose a novel full-duplex relaying protocol that relies on half-duplex relay nodes with data buffers. The proposed protocol doubles the transmission rate compared to the conventional half- duplex relaying protocol. In the proposed scheme, multiple relay nodes receive a source packet, while a single relay node transmits a buffered packet to the destination node at the same time slot. Specifically, our protocol exploits the multiple source-to-relay (SR) broadcast links rather than the single SR unicast link of the conventional buffer-aided full-duplex protocol, and hence provides an additional design degree of freedom. We also derive the theoretical bounds of the outage probability and average packet delay based on the Markov chain model. Our numerical results demonstrate that the proposed full-duplex protocol is capable of attaining a lower outage probability than that of the previous full-duplex max-max relay selection scheme, and the lower outage probability is achieved without imposing any additional cost.