Wednesday, February 17, 2010

NEC Simulates LTE Self Organizing Networks (SON)

NEC introduced a 3-dimensional Self Organizing Network (SON) simulator that checks and optimizes an LTE network. The system can be used to verify the effectiveness of SON in urban settings by evaluating LTE system performance amid 3-dimensional radio propagation.

Self Organizing Networks (SON) networks collect and analyze data from operational base stations and user terminals in order to measure the quality of network data, such as radio signal levels and data throughput, and then autonomously adjust configurations, such as transmission power. NEC said SON networks will help mobile operators to significantly reduce the frequency of field surveys, including radio quality tests that require dedicated measurement instruments, and improve network quality.

NEC's SON simulation system has been testing in an LTE trial network with 25 base stations in a 6-km2 central area of Yokohama, Japan. The system confirmed that the base stations' handover configurations were automatically optimized and dropped calls were prevented. It was also confirmed that base station energy consumption was saved, without degrading communication quality, through implementation of an autonomous sleep control that responded to the hour of the day.