Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Location Services (LCS); Diameter-based SLh interface for Control Plane LCS (V9.4.0; 3GPP TS 29.173 version 9.4.0 Release 9)
The present document describes the Diameter-based SLh interface between the GMLC and the HSS defined for the Control Plane LCS in EPC. LCS procedures over the SLh interface are defined in the 3GPP TS 23.271 [2]. This specification defines the Diameter application for the GMLC-HSS@ SLh reference point. The interactions between the HSS and the GMLC are specified@ including the signalling flows. As LCS procedures over the Diameter-based SLh interface are identical to the MAP-based Lh interface@ the descriptions of the Lh MAP operations defined in the 3GPP TS 29.002 [3] are mapped into the descriptions of the SLh Diameter commands.