3 Definitions and abbreviations

37.4823GPPE1 signalling transportRelease 17TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP 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 3GPP TR 21.905 [1].

E1: interface between a gNB-CU-CP and a gNB-CU-UP, providing an interconnection point between the gNB-CU-CP and the gNB-CU-UP, as defined in TS 38.300 [10]. This interface also applies to between the ng-eNB-CU-CP and the ng-eNB-CU-UP or between the eNB-CP and the eNB-UP.

eNB-CP: as defined in TS 36.401 [13].

eNB-UP: as defined in TS 36.401 [13].

gNB-CU: as defined in TS 38.401 [2].

gNB-CU-CP: as defined in TS 38.401 [2].

gNB-CU-UP: as defined in TS 38.401 [2].

ng-eNB-CU: as defined in TS 37.470 [14].

ng-eNB-CU-CP: as defined in TS 38.401 [2].

ng-eNB-CU-UP: as defined in TS 38.401 [2].

ng-eNB-DU: as defined in TS 37.470 [14].

SCTP endpoint: as defined in IETF RFC 4960 (2007-09) [6].

SCTP association: as defined in IETF RFC 4960 (2007-09) [6].

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].

DiffServ Differentiated Service

IANA Internet Assigned Number Authority

IP Internet Protocol

PPP Point to Point Protocol

SCTP Stream Control Transmission Protocol