Self-Organizing and Optimization in 5G Heterogeneous Networks

无线技术的发展 从4G到5G的网络必须面临几个根本性的挑战，包括 更高的数据速率、卓越的端到端性能和用户覆盖率 具有较低延迟、能耗和单位成本的热点和拥挤区域 信息传输。为了应对这些挑战，5G系统更倾向于 由宏蜂窝组成的多层架构，不同类型的许可 小型蜂窝、中继器和设备到设备(D2D)网络，为用户提供 频谱中的不同服务质量(Qos)要求和 节能方式。 无线资源管理(RRM) 将在多层或异构5G网络中发挥关键作用。这个 传统的4G RRM方案，如信道分配、功率控制、小区 关联和负载均衡在5G环境中可能效率不高，原因是 新兴的尖端技术，例如毫米波(毫米波)， 大规模MIMO等。 网络的部署和运行 由于规模的不断扩大，5G HetNet将是一项极其复杂的任务 和信息系统的复杂性。自组织和优化， 因此，已经被公认为5G网综的关键部分，作为人类 事实证明，基于网络的配置是劳动密集型、成本高昂、 容易出错。本项目考虑下一代HetNet，它包括 混合了网络层、传输功率和回程连接。我们 将通过以下方式开发一种新的自适应自组织网络(SON)方案 将认知无线电(CR)与小区间干扰协调相结合 (ICIC)。我们建议的自适应SON系统还将考虑到 不同网元空间关系，使得毫米波和海量 MIMO技术可以很好地实现5G系统所需的频谱效率。

The evolution of wireless networks from 4G to 5G has to face several fundamental challenges, including higher data rates, excellent end-to-end performance and user-coverage in hot-spots and crowded areas with lower latency, energy consumption and cost per information transfer. To address these challenges, 5G system prefers a multi-tier architecture consisting of macrocells, different types of licensed small cells, relays, and device-to-device (D2D) networks to serve users with different quality-of-service (QoS) requirements in a spectrum and energy-efficient manner. Radio resource management (RRM) will play a key role in multi-tier or heterogeneous 5G networks. The traditional 4G RRM schemes, such as channel allocation, power control, cell association and load balancing, may not be efficient in 5G environment, due to the emerging cutting edge technologies, e.g., millimeter waves (mmWave), massive MIMO, etc. The deployment and operation of 5G HetNets will be an extremely complicated task because of the growing scale and complexity of information systems. Self-organizing and optimization, therefore, have been recognized as a critical part of 5G ensembles, as human based network configuration is proven to be labor-intensive, costly, and error-prone. This project considers the next generation HetNets, which consist of a mixture of network tiers, transmit powers and backhaul connections. We will develop a novel scheme of adaptive self organization network (SON) by integrating cognitive radio (CR) with inter-cell interference coordination (ICIC). Our proposed adaptive SON system will also take into account the spatial relationship of different network element, so that mmWave and massive MIMO technology can well achieve the spectrum efficiency that 5G system requires.