Radio resource management for spectrum and energy efficient design of 5G networks

演进的第五代（5G）蜂窝无线网络被设想为克服现有蜂窝网络的基本挑战，现有蜂窝网络包括当前在世界范围内部署的第四代（4G）蜂窝网络。预计5G技术将为每单位面积提供1000倍的移动的数据量，10-100倍的连接设备数量和用户数据速率，10倍的电池寿命和5倍的延迟。预计5G无线网络将是不同大小、发射功率、回程连接和不同无线电接入技术（RAT）的网络层的混合体，这些网络层由前所未有数量的智能和异构无线设备接入。与4G网络相比，这种架构增强沿着高级物理通信技术，例如高阶空间复用多输入多输出（MIMO）通信，将为更多同时用户提供更高的聚合容量或更高水平的频谱效率。无线电资源和干扰管理将是多层和异构5G蜂窝网络中的关键研究挑战。用于无线电资源和干扰管理的传统方法（例如，信道分配、功率控制、小区关联或负载平衡）在这种环境中可能不是有效的，并且将需要对无线电资源管理（RRM）问题进行新的研究。在此背景下，在该项目的工业合作伙伴TELUS的支持下，我们将开发和研究用于5G网络的频谱和节能RRM方法。具体而言，该项目将专注于开发（i）用于有效干扰管理的小区关联和功率控制方法，（ii）用于频谱和节能多点传输的跨层合作，（iii）用于基站休眠和小区缩放的节能方法，以及（iv）多层5G网络中自适应能量收集的方法。这些将是5G蜂窝系统的关键推动因素，因此将对未来宽带无线行业的发展产生重大影响。

The evolving fifth generation (5G) cellular wireless networks are envisioned to overcome the fundamental challenges of existing cellular networks including the fourth generation (4G) cellular networks which are currently being deployed worldwide. The 5G technologies are expected to serve 1000 times higher mobile data volume per unit area, 10-100 times higher number of connecting devices and user data rate, 10 times longer battery life and 5 times reduced latency. 5G wireless networks are expected to be a mixture of network tiers of different sizes, transmit powers, backhaul connections, and different radio access technologies (RATs) that are accessed by an unprecedented numbers of smart and heterogeneous wireless devices. This architectural enhancement along with the advanced physical communications technology such as high-order spatial multiplexing multiple-input multiple-output (MIMO) communications will provide higher aggregate capacity for more simultaneous users or higher level of spectral efficiency, when compared to the 4G networks. Radio resource and interference management will be a key research challenge in multi-tier and heterogeneous 5G cellular networks. The traditional methods for radio resource and interference management (e.g., channel allocation, power control, cell association or load balancing) in single-tier networks (even some of those developed for two-tier networks) may not be efficient in this environment and a new look into the radio resource management (RRM) problem will be required. In this context, with support from TELUS, our industrial partner for this project, we will develop and study spectrum and energy efficient RRM methods for 5G networks. Specifically, the project will focus on developing (i) cell association and power control methods for efficient interference management, (ii) cross-tier cooperation for spectrum and energy-efficient multipoint transmission, (iii) energy efficient methods for base station sleeping and cell zooming, and (iv) methods for adaptive energy harvesting in multi-tier 5G networks. These will be key enablers for 5G cellular systems, and therefore, will have significant impact on shaping up the broadband wireless industry in the future.