B.3 Iurg related measurements

32.4053GPPPerformance Management (PM)Performance measurementsRelease 17Telecommunication managementTSUniversal Terrestrial Radio Access Network (UTRAN)

The main purpose of Iurg interface is to enhance mobility performance including paging, cell update and registration area update etc, especially for dual-RAN capable mobiles. It can alleviate the potential problem caused with dual mode mobiles frequently toggling between UTRAN and GERAN coverage areas (e.g. in indoor coverage situations): for instance, common LAIs and RAIs for GERAN and UTRAN cells in the same geographical area.

Resource reservation, preparation and implementation of handover with Iurg interface success rate are very useful to analyze network handover performance and to do trouble shooting when handover success rate is lower than predefined threshold. So it is necessary to define Iurg related measurements.