Self-Organizing and Optimization in 5G Heterogeneous Networks

**无线*网络从4G向5G的演进必须面临几个根本性的挑战，包括*更高的数据速率、出色的端到端性能以及*热点和拥挤地区的用户覆盖*，而延迟、能耗和每信息传输成本*较低。为了应对这些挑战，5G系统更喜欢由宏蜂窝、不同类型的许可*小蜂窝、中继站和设备到设备(D2D)网络组成的*多层体系结构，以频谱和*能源高效的方式为*不同的服务质量(Qos)要求的用户服务。*无线资源管理(RRM)*将在多层或异质的5G网络中发挥关键作用。传统的4G无线资源管理方案，如信道分配、功率控制、小区关联和负载均衡等，在5G环境下可能效率不高，因为*毫米波、*大规模MIMO等新兴尖端技术。*信息系统的规模和复杂性将使*5G HetNet的部署和运营成为一项极其复杂的任务。因此，自组织和优化*已被认为是5G集成的关键部分，因为基于人工*的网络配置已被证明是劳动密集型、成本高昂且*容易出错的。该项目考虑下一代HetNet，它由网络层、传输功率和回程连接组成。我们将通过将认知无线电(CR)与小区间干扰协调(ICIC)相结合来开发一种新的自适应自组织网络(SON)方案。我们提出的自适应SON系统还将考虑不同网元的*空间关系，以便毫米波和海量*MIMO技术能够很好地实现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.****