Ultrareliable and Low-Latency Wireless Communication: Tail, Risk, and Scale
Ultrareliable and Low-Latency Wireless Communication: Tail, Risk, and Scale
复制标题
DOI：
10.1109/jproc.2018.2867029
复制
发表时间：
2018-10-01
影响因子：
20.6
通讯作者：
Poor, H. Vincent
中科院分区：
文献类型：
--
作者：
Bennis, Mehdi;Debbah, Merouane;Poor, H. Vincent
确保5G无线网络及以后的超可靠和低延迟通信（URLLC）具有重要意义，目前正受到学术界和工业界的极大关注。在其核心，URLLC要求偏离预期的基于公用事业的网络设计方法，其中依赖于平均数量（例如，平均吞吐量、平均延迟和平均响应时间）不再是一种选择，而是必须的。相反，严重缺乏一个考虑延迟，可靠性，数据包大小，网络架构和拓扑（跨接入，边缘和核心）以及不确定性下的决策的原则性和可扩展的框架。本文的总体目标是填补这一空白的第一步。为了实现这一愿景，在提供延迟和可靠性的定义之后，我们仔细研究了URLLC的各种推动因素及其固有的权衡。随后，我们将重点关注与URLLC需求相关的各种技术和方法，以及它们在选定用例中的应用。这些结果为低延迟和高可靠性无线网络的设计提供了清晰的见解。
Ensuring ultrareliable and low-latency communication (URLLC) for 5G wireless networks and beyond is of capital importance and is currently receiving tremendous attention in academia and industry. At its core, URLLC mandates a departure from expected utility-based network design approaches, in which relying on average quantities (e.g., average throughput, average delay, and average response time) is no longer an option but a necessity. Instead, a principled and scalable framework which takes into account delay, reliability, packet size, network architecture and topology (across access, edge, and core), and decision-making under uncertainty is sorely lacking. The overarching goal of this paper is a first step to filling this void. Towards this vision, after providing definitions of latency and reliability, we closely examine various enablers of URLLC and their inherent tradeoffs. Subsequently, we focus our attention on a wide variety of techniques and methodologies pertaining to the requirements of URLLC, as well as their applications through selected use cases. These results provide crisp insights for the design of low-latency and high-reliability wireless networks.