SLs Interface

SLs interface is between the MME(Mobility Management Entity) and e-SMLC (Evolved Serving Mobile Location Center).

Overview

SLs interface is between the MME(Mobility Management Entity) and e-SMLC (Evolved Serving Mobile Location Center). The SLs interface test solution from Valid8 enables simulation or load testing of this interface for Location Services (LCS)

Network Diagram

Messages

  • Location Request
  • Location Estimate Response
  • Provide Location Request
  • Reset Request
  • LPP Provide Capabilities
  • LPP Request Assistance
  • LPP Provide Location
  • LPPa Request Location
  • LPPa OTDOA Location Request
  • LPP Request Capabilities
  • LPP Provide Assistance
  • LPP Request Location

Call Flows

Standards

  • 3GPP TS 29.173 (SLh)
  • 3GPP TS 23.271 (LCS)
  • IETF RFC 4960 (SCTP)

Related Products and Protocols

Protocols