Networking algorithms and protocols for 5G wireless communications

第五代（5G）无线通信系统将适应各种具有不同服务质量要求的新兴业务，包括电子医疗和物联网，并将从2020年开始初步部署。5G网络基础设施将整合多种网络资源和技术，以支持高业务需求。业务和网络的异构性对实现网络运营的可扩展性、适应性和灵活性提出了重大挑战。该研究计划的长期目标是开发高效的通信网络解决方案，为移动/固定用户和机器提供有效的端到端宽带多媒体服务。未来5年的短期目标是在新兴的软件定义网络（SDN）和网络功能虚拟化（NFV）框架下，发展数学模型来表征网络控制变量和服务质量指标之间的关系，并为无线领域开发创新的服务定制网络算法和协议。该研究计划包括三个重点领域：******1)无线网络的抽象- 5G系统将包括具有用于大覆盖的宏蜂窝和用于高频重用的小蜂窝的蜂窝网络，以及用于设备/机器通信的自组织网络。多种网络运行方式并存，集中网络控制和分布式网络控制并存。我们将研究如何用简单的抽象模型等价地表示复杂的无线传输系统，以方便协议栈网络层的网络管理；******2)节能无线通信网络-随着移动通信服务的普及，电信系统的能源消耗已经导致了严重的环境和财务问题。为了使5G系统可持续发展，需要节能的无线网络解决方案。我们将研究和开发能源和频谱高效解决方案，以适应预期的数据流量巨大增长，探索异构网络之间的合作网络；******3)全双工（FD）传输的有效信道访问：新兴的FD技术允许无线电终端在同一信道上同时发送和接收，潜在地使无线电频谱效率翻倍。FD传输使链路间干扰复杂化，从而降低潜在的吞吐量增益。我们将开发一种信道访问协议，以最大限度地减少FD传输的新干扰，并最大限度地提高无线电资源的统计多路复用，以适应时间和空间领域的数据流量动态。******这项前沿研究将为开发5G网络产生新的想法和技术，这将有助于为加拿大电信行业培养至关重要的竞争优势。

Fifth generation (5G) wireless communication systems will accommodate a wide range of emerging services with diverse service quality requirements, including e-healthcare and internet of things, with initial deployment from year 2020. The 5G network infrastructure will integrate a variety of network resources and technologies to support high service demands. The heterogeneity in both services and networks poses significant challenges to achieve network operation scalability, adaptability, and flexibility. The long-term goal of this research program is to develop efficient communication network solutions for effective end-to-end delivery of broadband multimedia services to mobile/stationary users and machines. The short-term objective in the next five years is to develop mathematical models to characterize relations among network control variables and service quality metrics, and to develop innovative service-customized networking algorithms and protocols for the wireless domain, under the emerging software defined networking (SDN) and network function virtualization (NFV) frameworks. This research program includes three thrust areas:******1) Abstraction of wireless networks - The 5G systems will include cellular networks with macro-cells for large coverage and small-cells for high frequency reuse, and ad hoc networks for device/machine communications. Multiple network operation modes will coexist, with both centralized and distributed network control. We will study how to equivalently represent the complex wireless transmission systems by simple abstraction models to facilitate network management in the network layer of protocol stack;******2) Energy efficient wireless communication networking – With pervasive mobile communication services, the energy consumption in telecom systems has led to serious environmental and financial concerns. Energy efficient wireless networking solutions are required in order for 5G systems to be sustainable. We will investigate and develop energy and spectral efficient solutions to accommodate the anticipated huge growth in data traffic, exploring cooperative networking among heterogeneous networks;******3) Efficient channel access over full-duplex (FD) transmissions: The emerging FD technique allows a radio terminal to transmit and receive simultaneously on the same channel, potentially doubling the radio spectrum efficiency. FD transmission complicates inter-link interference which can diminish the potential throughput gain. We will develop a channel access protocol to minimize new interference from FD transmissions, and to maximize statistical multiplexing of radio resources to accommodate data traffic dynamics in both time and space domains.******This cutting-edge research will generate new ideas and techniques for developing 5G networks, which will help to foster a vital competitive edge for the Canadian telecom industry.