Description

Self-organizing network, or SON, technology, which is able to minimize human intervention in networking processes, was proposed to reduce the operational costs for service providers in future wireless systems. As a cost-effective means to significantly enhance capacity, heterogeneous deployment has been defined in the 3GPP LTE Advanced standard, where performance gains can be achieved through increasing node density with low-power nodes, such as pico, femto, and relay nodes. These SON functions automatically perfom management actions. There will be SON functions for many aspects of fault, configuration, accounting, performance, and security (FCAPS) management. The functions are executed based on monitored network behavior, which may lead to several functions being active concurrently in the same network area. Simultaneous execution of different functions with contradicting goals may lead to oscillating function execution and service degradation in the worst case. Therefore, SON function coordination is indispensable for SON-enabled networks in order to align the executed SON funtions and thus assure that they take full effect (improved performance and fault handling). Coordination mechanisms need to be developed and verified before they are deployed into the network. The SON has great potential for application in future LTE-Advanced heterogeneous networks, also called HetNets. In this project, the system proposes a simplified framework that is Heuristic Coordination in the context of a heterogeneous network (HetNet) scenario. This framework is to overshot or undershot KPI events by deciding to either increase or decrease corresponding influential parameters.