动态流量需求下的异构蜂窝网络部署规划和干扰控制技术研究

With the extensively use of wireless smart devices and rapid development of mobile applications, the current infrastructures are expected to enhance network capacity and reduce energy consumption at the same time. Heterogeneous cellular network (HCN), which is built by deploying small cells in traditional macro cellular networks, can enhance the coverage for users and improve the capacity of the total network. However, due to the frequency reuse, complex co-channel interference exists among macrocells and small cells, which is a great challenge to improve the spectrum efficiency and energy efficiency of HCNs. This project will conduct research on dynamic traffic modeling, small cell deployment and planning, interference coordination and resource management in the downlink to optimize spectrum efficiency and energy efficiency.

随着无线智能终端的普及和移动应用的快速发展，人们要求现有的基础设施架构既能大幅地提升网络的容量，又能显著地降低网络的能耗。通过在现有的宏蜂窝网络中部署低发射功率的小基站，构建异构蜂窝网络（Heterogeneous Cellular Network，HCN），可以快速有效地增强对用户的覆盖，并提升整个蜂窝网络的容量。但是，考虑到动态流量和频谱复用，异构蜂窝网络中存在着复杂的同频干扰问题，这对异构蜂窝网络的频谱效率和能量效率的提升带来了严峻的挑战。本项目将针对异构蜂窝网络的动态流量建模、小蜂窝部署规划和干扰控制问题展开研究，以频谱效率或能量效率为目标对小基站的部署规划以及下行链路传输过程中的干扰控制和资源分配问题进行建模，并给出优化解决方案。