Access to various services in modern mobile networks is enabled through several different generations of radio access technologies, making the complexity of the design and management of the network severely difficult. An additional level of complexity is also represented by a proposed heterogeneous form of networks, which provide high capacity and throughput of the system. For these reasons it was defined concept of Self Organized Network in the LTE standard release 8. The purpose of individual functionality is in the greatest extent possible automate processes of configuration, management and maintenance of LTE networks with the possibility of limited application in the networks of previous generations. The aim of this thesis is to present individual features that make up the Self Organized Network. The first part presents the basic features and properties of heterogeneous networks. The central part of the thesis is based on a detailed description of the automated processes of Self Organized Networks such as the physical cell identity, automatic neighbour relations, mobility robustness optimisation, mobility load balancing, intercell interference coordination and energy saving. The thesis concludes with the final thought on the current development of mobile networks. Further development will go in the direction of cognitive networks by entering the logic and the ability to learn from past experience.
|
