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Proximate Device Discovery for D2D Communication in LTE Advanced: Challenges and Approaches
IEEE Wireless Communications ( IF 12.9 ) Pub Date : 2020-06-05 , DOI: 10.1109/mwc.001.1900497
Haiqiao Wu , Xiang Gao , Shaoyi Xu , Dapeng Oliver Wu , Peng Gong

LTE D2D communication, which emerges as a SoLoMo network enabler, has become an essential part of our everyday life and brings benefits to subscribers and telecommunication operators alike. Proximate device discovery, or peer discovery, is an essential part in the D2D technology since the node first needs to find its neighbors before initiating D2D communication. With functions of intelligent discovery, context awareness and interactive exchange, D2D communication facilitates content sharing of a device with others. A plethora of works about device discovery have been carried out in ad hoc networks. However, as a new feature in LTE systems, the special characteristics of proximate device discovery raise several unique challenges. In this article, variant aspects of proximate device discovery are surveyed. We first overview the fundamentals of peer discovery, including basic concepts, application scenarios, associated requirements, along with the current standardization progress. The key challenges and open issues in the design of device discovery signals and device discovery protocols for D2D communication in centralized and distributed situations are respectively surveyed. Possible approaches to address these challenges are discussed.

中文翻译:

LTE Advanced中用于D2D通信的近端设备发现:挑战和方法

LTE D2D通信作为SoLoMo网络使能器而出现,已成为我们日常生活的重要组成部分,并为订户和电信运营商带来了好处。由于节点首先需要在启动D2D通信之前先找到其邻居,因此邻近的设备发现或对等点发现是D2D技术中的重要组成部分。借助智能发现,上下文感知和交互式交换功能,D2D通信可促进设备与他人共享内容。在自组织网络中已经进行了许多有关设备发现的工作。但是,作为LTE系统中的一项新功能,邻近设备发现的特殊特征带来了一些独特的挑战。在本文中,对邻近设备发现的各种方面进行了调查。我们首先概述对等发现的基础知识,包括基本概念,应用场景,相关要求以及当前的标准化进展。分别调查了在集中式和分布式情况下用于D2D通信的设备发现信号和设备发现协议的设计中的主要挑战和未解决的问题。讨论了解决这些挑战的可能方法。
更新日期:2020-06-05
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