Self-Organizing Networks (SON) in 3GPP Long Term Evolution

Self-Organizing Networks (SON) in 3GPP Long Term Evolution



As every mobile network, LTE (Long Term Evolution) system also needs to be managed. Since LTE is an evolvement of UMTS, the management should also evolve from UMTS. There is a trend to simplify the management by auto-configuration and auto-optimization. However, the complexity of LTE system also place new demands on the Operations and Maintenances of the network. Self-Organizing Networks (SON) is seen as one of the promising area for an operator to save operational expenditures. SON is therefore currently discussed in 3GPP standardisation. This paper provides some background on SON principles, introduces different architectures that are considered and describes some exemplary procedures.


Main Drivers for SON:-

1. The number and structure of network parameters have become large and complex
2. Quick evolution of wireless networks has led to parallel operation of 2G, 3G, EPC infrastructures
3. The rapidly expanding number of Base Stations (especially Home eNB) needs to be configured and managed with the least possible human interaction.


Main Functionality of SON:-

• Self-configuration
• Self-optimization
• Self-healing

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