Energy-Efficient Mode Selection for D2D Communications in Cellular Networks
Energy-Efficient Mode Selection for D2D Communications in Cellular Networks
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DOI：
10.1109/tccn.2018.2873004
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发表时间：
2018-10
影响因子：
8.6
通讯作者：
Jun Huang;Jinyun Zou;Cong-Cong Xing-Cong
中科院分区：
文献类型：
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作者：
Jun Huang;Jinyun Zou;Cong-Cong Xing-Cong
与蜂窝链路共存的设备到设备（D2D）通信性能的主要挑战之一在于干扰管理。模式选择已被公认为应对这一挑战的最有效手段。在本文中，我们从节能的角度探讨了蜂窝网络下的 D2D 通信的模式选择。通过对发射功率进行分层，我们使用随机几何分析了蜂窝和 D2D 链路的成功概率和遍历容量。在分析的基础上，设计了两种节能模式选择机制。我们的模拟表明，D2D 用户能够通过我们开发的机制选择适当的模式。特别是，我们得到了一个有趣的见解：在保证所需的信干比的情况下，远离基站的蜂窝用户的成功概率略大于靠近基站的蜂窝用户。这一见解预计将为 D2D 模式选择提供设计指南。
One of the major challenges to the performance of device-to-device (D2D) communications co-existing with cellular links lies in the interference management. Mode selection has been recognized as the most effective means to deal with this challenge. In this paper, we explore the mode selection for D2D communications underlaying cellular networks from an energy-efficient perspective. Through stratifying the transmit power, we analyze the success probability and ergodic capacity for both cellular and D2D links using stochastic geometry. On the basis of analysis, two energy-efficient mode selection mechanisms are devised. Our simulations show that D2D users are able to select appropriate modes via our developed mechanisms. In particular, an interesting insight is obtained: when the required signal-to-interference ratio is guaranteed, the success probability of cellular users who are far away from the base station is slightly greater than that who are close to the base station. This insight is expected to provide a design guideline for D2D mode selections.