Toward Energy-Efficient and Ultra-Low Latency Wireless Networks: 5G and Beyond

迈向节能和超低延迟无线网络：5G及更高 申请者的研究项目是无线通信和网络领域。 近年来，无线服务提供商部署了长期演进(LTE)系统，以方便移动用户使用他们的智能手机或平板电脑连接互联网、访问社交网络，并推出不同类型的实时和流媒体应用。随着物联网(IoT)设备和应用的激增，下一代无线网络，即第五代(5G)网络，目标不仅是为现有的移动用户提供更高的数据速率，而且还支持潜在的数十亿物联网设备接入互联网。 机器类型通信(MTC)是物联网的重要推动因素。国际电信联盟将MTC分为两类：大规模MTC(MMTC)和超可靠低延迟通信(URLLC)。MMTC的特点是连接密度高；即每个单元共存大量有源、低成本和低功耗的MTC设备。传感器网络和可穿戴设备就是MMTC的例子。URLLC要求可靠的数据传输，具有10毫秒或更短的严格延迟限制。URLLC是电子健康和自动驾驶等应用所必需的。为了满足这些具有挑战性的要求，需要在无线接入网和核心网中进行一场真正的技术革命。 在这项研究计划中，长期目标是支持具有不同延迟和吞吐量要求的物联网应用，并以可扩展的方式提高新兴5G无线网络的频谱和能源效率。在五年的时间框架内，我们将重点关注以下相互关联的短期目标：(A)发展无线接入网络和核心网络架构，纳入软件定义网络(SDN)、移动边缘计算和动态网络切片，以提高5G网络的频谱效率和灵活性，以支持不同类型的设备(例如智能手机、MTC设备)和物联网应用；(B)基于非正交多址(NOMA)，为MMTC设备开发节能的介质访问控制算法，以提高覆盖区域内的可扩展性和连接密度；以及(C)为URLCC设备开发基于SDN、载波聚合和NOMA的应用感知调度算法，以支持具有高可靠性和超低延迟要求的物联网应用。 我们预计，我们的研究将为当地和全球电信业找到实用的新颖解决方案和应用，以造福于5G系统及更远的地方。预计它们将在促进加拿大技术创新的长期竞争力方面产生持久影响。

Toward Energy-Efficient and Ultra-Low Latency Wireless Networks: 5G and Beyond The research program of the applicant is in the areas of wireless communications and networking. In recent years, wireless service providers have deployed Long Term Evolution (LTE) systems to facilitate mobile users in using their smartphones or tablets to connect to the Internet, access social networks, and launch different types of real-time and streaming multimedia applications. With the proliferation of Internet of Things (IoT) devices and applications, the next generation of wireless networks, namely the fifth generation (5G) networks, aim to not only provide a higher data rate to the existing mobile users, but also to support the connection of potential billions of IoT devices to the Internet. Machine-type communications (MTC) is an important enabler of IoT. The International Telecommunications Union classifies MTC into two categories: massive MTC (mMTC) and ultra-reliable and low latency communications (URLLC). mMTC is characterized by high connection density; i.e., a massive number of active low-cost and low-power MTC devices co-exist per cell. Sensor networks and wearables are examples of mMTC. URLLC requires reliable data transmissions with strict latency constraint of 10 milliseconds or less. URLLC is required for applications such as e-health and autonomous driving. To meet these challenging requirements, a true revolution of technologies in the radio access network and core network is needed. In this research program, the long-term objective is to support IoT applications with diverse delay and throughput requirements, and to improve the spectral and energy efficiencies of the emerging 5G wireless networks in a scalable manner. Within the five-year time frame, we will focus on the following inter-related short-term objectives: (a) to develop radio access network and core network architecture, incorporating software-defined networking (SDN), mobile edge computing, and dynamic network slicing, to improve the spectral efficiency and flexibility of 5G networks to support different types of devices (e.g., smartphones, MTC devices) and IoT applications; (b) to develop energy-efficient medium access control algorithms for mMTC devices, based on non-orthogonal multiple access (NOMA), to improve the scalability and connection density within a coverage area; and (c) to develop application-aware scheduling algorithms for URLCC devices, based on SDN, carrier aggregation, and NOMA, to support IoT applications with high reliability and ultra-low delay requirements. We anticipate that our research will find practical novel solutions and applications for the benefit of the local and the global telecommunications industry for 5G systems and beyond. They are expected to have a lasting impact in contributing towards the long-term competitiveness of Canada's technological innovation.