3 Definitions and abbreviations

36.4583GPPEvolved Universal Terrestrial Radio Access Network (E-UTRAN)Release 17SLm interface signalling transportTS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].

SLm: interface between an LMU and an E-SMLC, providing an interconnection point between the LMU and the E-SMLC. It is also considered as a reference point.

SLmAP: Reference point for the application protocol between LMU and E-SMLC.

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply.

E-SMLC E-UTRAN Serving Mobile Location Centre

DiffServ Differentiated Service

IP Internet Protocol

MME Mobility Management Entity

PPP Point to Point Protocol

SCTP Stream Control Transmission Protocol

SLmAP SLm Application Protocol

UTDOA Uplink Time Difference of Arrival