The present document defines metrics and measurement methods applicable for the following systems and nodes defined in TS 123 002 [3]:
• Mobile core functions (GGSN, HLR, MGW, MME, MSC, SGSN and PGW/SGW).
Later revisions of the present document will include Radio access control nodes (BSC, RNC) and IMS core functions (BGCF, CSCF, HSS, IBCF, MRFC, MRFP, SLF and LRF).