With the recent development of LTE‐A/5G technologies, data sharing among mobile devices offer an attractive opportunity to reduce Internet access. However, it requires smart strategies to share the data with low trade‐offs in time, cost, and energy. Several existing schemes offer a super‐peer‐based two‐tier model using a distributed hash table (DHT) organization for smart devices having device‐to‐device (D2D)/Bluetooth/WiFi capabilities. The primary focus of these schemes has been to reduce Internet usage by increased D2D content sharing. However, the real challenge is not in creating a two‐tier model, but evolving an efficient overlay that offers enhanced opportunities for D2D content sharing over the existing model. In this paper, we formulated a P‐median‐based selection of tier‐1 devices in a distribution network and solved it using the Lagrangian relaxation method. The tier‐2 devices become clients seeking content sharing services from tier‐1 devices. A strong motivation in this work is to raise a user's perception of the grade of service known as quality of experience (QoE). We analyzed the challenge for QoE assessment in resource‐constrained smartphones under the proposed model of enhanced D2D communication. Our focus is to establish a framework to evaluate QoE for applications and services over LTE‐A/5G networks with an improved D2D communication level. The simulation and the experimental results validate the claim that substantial improvements in QoE are possible with the proposed mathematical model for selecting and placing tier‐1 mobile devices and maintaining a DHT for D2D communication.

中文翻译：

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在设备对设备通信中使用对等覆盖来提高体验质量

随着LTE-A / 5G技术的最新发展，移动设备之间的数据共享为减少Internet访问提供了诱人的机会。但是，它需要明智的策略来共享数据，并且在时间，成本和能源方面的折衷要低。现有的几种方案使用分布式哈希表（DHT）组织为具有设备到设备（D2D）/蓝牙/ WiFi功能的智能设备提供了基于对等方的两层模型。这些方案的主要重点是通过增加D2D内容共享来减少Internet使用。但是，真正的挑战不是创建两层模型，而是发展有效的覆盖层，为现有模型上的D2D内容共享提供更多的机会。在本文中，我们在配电网络中制定了基于P中值的第1层设备选择，并使用拉格朗日松弛法对其进行了求解。第2层设备成为寻求从第1层设备进行内容共享服务的客户端。这项工作的主要动机是提高用户对服务质量的认识，即体验质量（QoE）。我们分析了在建议的增强D2D通信模型下，在资源受限的智能手机中进行QoE评估的挑战。我们的重点是建立一个框架，以评估具有改进的D2D通信级别的LTE-A / 5G网络上的应用和服务的QoE。