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Throughput-Outage Scaling Behaviors for Wireless Single-Hop D2D Caching Networks With Physical Model
IEEE Transactions on Wireless Communications ( IF 10.4 ) Pub Date : 2022-02-17 , DOI: 10.1109/twc.2022.3150332
Ming-Chun Lee , Andreas F. Molisch , Mingyue Ji

Throughput-Outage scaling laws for single-hop cache-aided device-to-device (D2D) communications have been extensively investigated under the assumption of the protocol model. However, the corresponding performance under physical models has not been explored; in particular it remains unclear whether link-level power control and scheduling can improve the asymptotic performance. This paper thus investigates the throughput-outage scaling laws of cache-aided single-hop D2D networks considering a general physical channel model. By considering the networks with and without the equal-throughput assumption, we analyze the corresponding outer bounds and provide the achievable performance analysis. Results show that when the equal-throughput assumption is considered, using link-level power control and scheduling cannot improve the scaling laws. On the other hand, when the equal-throughput assumption is not considered, we show that the proposed double time-slot framework with appropriate link-level power control and scheduling can significantly improve the throughput-outage scaling laws, where the fundamental concept is to first distinguish links according to their communication distances, and then enhance the throughput for links with small communication distances.

中文翻译:

具有物理模型的无线单跳 D2D 缓存网络的吞吐量中断扩展行为

在协议模型的假设下,已经广泛研究了单跳缓存辅助设备到设备 (D2D) 通信的吞吐量中断缩放定律。但是,尚未探索物理模型下的相应性能;特别是链路级功率控制和调度是否可以提高渐近性能仍然不清楚。因此,本文研究了考虑通用物理通道模型的缓存辅助单跳 D2D 网络的吞吐量中断缩放规律。通过考虑具有和不具有等吞吐量假设的网络,我们分析了相应的外部边界并提供了可实现的性能分析。结果表明,当考虑等吞吐量假设时,使用链路级功率控制和调度不能改善缩放定律。
更新日期:2022-02-17
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