自组织网络中覆盖、容量和负载均衡的联合优化
Joint Optimization of Coverage, Capacity and Load Balancing in Self-Organizing Networks
摘要：
本文提出了一个自组织网络（SON）的优化框架。目标是通过不同SON功能的联合优化来确保有效的网络操作，所述SON功能包括容量、覆盖和负载均衡。基于单调和严格次齐次函数的公理化框架，我们制定了一个优化问题的上行链路，并提出了一个两步优化方案，使用不动点迭代：i）每个基站天线倾斜优化和功率分配，ii）基于簇的基站分配的用户和功率分配。然后，我们考虑下行链路，这是更难以处理，由于耦合变量，并显示下行链路-上行链路的对偶关系。结果，通过解决上行链路问题来获得用于下行链路的解决方案。模拟结果表明，我们的方法在覆盖范围、容量和负载均衡之间实现了良好的权衡。
英文摘要：
This paper develops an optimization framework for self-organizing networks (SON). The objective is to ensure efficient network operation by a joint optimization of different SON functionalities, which includes capacity, coverage and load balancing. Based on the axiomatic framework of monotone and strictly subhomogeneous function, we formulate an optimization problem for the uplink and propose a two-step optimization scheme using fixed point iterations: i) per base station antenna tilt optimization and power allocation, and ii) cluster-based base station assignment of users and power allocation. We then consider the downlink, which is more difficult to handle due to coupled variables, and show downlink-uplink duality relationship. As a result, a solution for the downlink is obtained by solving the uplink problem. Simulations show that our approach achieves a good trade-off between coverage, capacity and load balancing.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
