Advanced Wireless Networks, 3rd Edition

13Self-Organizing Networks

13.1 Self-Organizing Network Optimization

Self-organizing network (SON) techniques refer to a closed-loop coordinated handling of dynamic parameter changes submitted to the operating network’s configuration management entity. For this reason, a major research goal for emerging SON technologies is to achieve coordinated results out of a plethora of independently or even concurrently running use case implementations. As opposed to the previous chapter, in this chapter, we focus on computing desirable user associations by an interference model that explicitly takes base station loads into account.

13.2 System Model

In this section, we consider the downlink of a cellular network consisting of N BSs covering a compact region . Users are assumed to be spatially distributed according to some distribution with . Users can, in principle, be mobile with certain restrictions, that will be specified later. Network traffic is modeled on flow level, where flows represent individual data transfers of, for example, web pages, video, audio, or general data files. We assume that the arrival of flow requests to the network takes place according to a Poisson process with ...