3 Definitions and abbreviations

23.2463GPPArchitecture and functional descriptionMultimedia Broadcast/Multicast Service (MBMS)Release 17TS

3.1 Definitions

For the purposes of the present document, the terms and definitions defined in TR 21.905 [1] and TS 22.146 [2] and the following apply:

MBMS Service Announcement: Mechanism to allow users to be informed about the MBMS user services available.

MBMS Bearer Service: the service provided by the PS Domain to MBMS User Services to deliver IP multicast datagrams to multiple receivers using minimum network and radio resources.

MBMS User Service: the MBMS service provided to the end user by means of the MBMS Bearer Service and possibly other capabilities.

MBMS Service Area: The area within which data of a specific MBMS session are sent. Each individual MBMS session of an MBMS Bearer Service may be sent to a different MBMS Service Area. This MBMS Service Area is the same or a subset of the Multicast or Broadcast Service Area as defined in TS 22.146 [2]. An MBMS Service Area smaller than the Multicast or Broadcast Service Area is typically used for localized services.

MBMS over a Single Frequency Network: See TS 25.346 [10].

Receive Only Mode: A UE configuration option that allows a UE to receive only eMBMS broadcast service without the need to access and register with the PLMN offering the eMBMS service. A UE configured to operate in Receive Only Mode receives MBMS service only on a standardised TMGI value range. The UE uses the acquired system information to receive MBMS broadcast. Use of Receive Only Mode does not require USIM for the UE.

Shared MBMS Network: A network shared by multiple PLMNs that provides MBMS services. The Shared MBMS network consists of the following shared network elements: BM-SC(s) and MBMS-GW(s). The shared MBMS network may also include eNB(s), MCE(s), and shared MME(s) for MBMS operation.

3.2 Abbreviations

For the purposes of the present document, the abbreviations in TR 21.905 [1] and TS 22.146 [2] apply.

EPS Evolved Packet System

C-TEID Common TEID

MBSFN MBMS over a Single Frequency Network

MCE Multi-cell/Multicast Coordination Entity

SSM Source Specific Multicast

TMGI Temporary Mobile Group Identity

TPF Traffic Plane Function

SMN Shared MBMS Network