Content for TS 26.502 Word version: 18.1.0
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
3.1 Terms
3.2 Symbols
3.3 Abbreviations
...
...
1 Scope p. 8
The present document defines an architecture and high-level procedures for User Services conveyed using the 5G multicast-broadcast capabilities of the 5G System defined in TS 23.501, TS 23.502 and TS 23.247.
2 References p. 8
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.501: "System architecture for the 5G System (5GS)".
[3]
TS 23.502: "Procedures for the 5G System (5GS)".
[4]
TS 23.503: "Policy and charging control framework for the 5G System (5GS); Stage 2".
[5]
TS 23.247: "Architectural enhancements for 5G multicast-broadcast services; Stage 2".
[6]
TS 26.348: "Northbound Application Programming Interface (API) for Multimedia Broadcast/Multicast Service (MBMS) at the xMB reference point".
[7]
TS 26.501: "5G Media Streaming (5GMS); General description and architecture".
[8]
RFC 3550: "RTP: A Transport Protocol for Real-Time Applications".
[9]
RFC 2250: "RTP Payload Format for MPEG1/MPEG2 Video".
[10]
TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".
[11]
TS 26.531: "Data Collection and Reporting; General Description and Architecture".
[12]
TS 23.468: "Group Communication System Enablers for LTE (GCSE_LTE)".
[13] Void.
[14]
TS 23.468: "Group Communication System Enablers for LTE (GCSE_LTE)".
[15]
TS 29.522: "5G System; Network Exposure Function Northbound APIs; Stage 3".
[16]
OMA: "OMNA BCAST Service Class Registry", https://technical.openmobilealliance.org/OMNA/bcast/bcast-service-class-registry.html .
[17]
IANA: "Reliable Multicast Transport (RMT) FEC Encoding IDs and FEC Instance IDs", https://www.iana.org/assignments/rmt-fec-parameters/rmt-fec-parameters.xhtml#rmt-fec-parameters-1 .
[18]
TS 33.501: "Security architecture and procedures for 5G system".
[19]
TS 33.246: "Security of Multimedia Broadcast/Multicast Service (MBMS)".
3 Definitions of terms, symbols and abbreviations p. 9
3.1 Terms p. 9
For the purposes of the present document, the terms given in TR 21.905, TS 23.501, TS 23.502, TS 23.247 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.
Application Service Entry Point:
a document (e.g. an MPEG-DASH Media Presentation Description or root HTML page) describing, and used to initiate, an application layer service that is delivered using an MBS User Service.
Broadcast MBS session:
an MBS session to deliver the broadcast communication service, as defined in TS 23.247.
distribution method:
a mechanism (comprising the Object Distribution Method and Packet Distribution Method) used by the MBSTF to deliver data to the MBS Client as part of a User Service.
MBS Application Data Session:
time, protocols and protocol state (i.e. parameters) provided by the MBSTF Client to the MBS-Aware Application.
MBS Distribution Session Announcement:
metadata entity consumed by the MBSTF Client that is used to advertise the current or imminent availability of an MBS Distribution Session in the MBS System that provides parameters needed by the MBSTF Client to receive it.
MBS Application Service:
an end-user service for which parts or all of the data are accessible by activating the reception of an MBS User Service.
MBS-Aware Application:
a UE-based application that consumes User Services by invoking with MBS Client APIs.
MBS Client:
the UE function that consumes User Services defined in the present document.
MBS Distribution Session:
time, protocols and protocol state (i.e. parameters) which define sender and receiver configuration and which use an MBS Session for the delivery of an MBS User Data Ingest Session.
MBS Session:
a multicast session or a broadcast session, as defined in TS 23.247.
MBS User Service:
an abstract transport-level service configured by the MBSF and using one or more MBS Distribution Sessions, possibly in combination with unicast, for the purpose of supporting an MBS-Aware Application via a set of APIs that allows the MBS Client to activate and deactivate reception of the MBS Session.
MBS User Data Ingest Session:
time, protocols and protocol state (i.e. parameters) provided by an MBS Application Provider for distribution over an MBS User Service, and provided to the MBS-Aware Application as an MBS Application Data Session.
MBS User Service Announcement:
metadata entity consumed by the MBSF Client composed of one or more MBS Distribution Session Announcements.
MBS User Service Announcement Channel:
MBS Distribution Session generated by the MBSF to carousel MBS User Service Announcements to the MBS Client using the Object Distribution Method.
MBS User Service Control:
control of an MBS User Service by an MBS-Aware Application interacting with an MBSF Client.
MBS User Service Provisioning:
provisioning of an MBS User Service in the MBSF by an MBS Application Provider.
MBS User Service Session:
an instance of an MBS User Service.
Multicast MBS session:
an MBS session to deliver the multicast communication service, as defined in TS 23.247.
Object Distribution Method:
the distribution method supporting real-time and non-real-time distribution of discrete binary objects, including media segments, to MBS Clients as part of an MBS Session.
Packet Distribution Method:
the distribution method supporting transparent delivery of Application Data Units to MBS Clients as part of an MBS Session.
3.2 Symbols p. 10
Void.
3.3 Abbreviations p. 10
For the purposes of the present document, the abbreviations given in TR 21.905, TS 23.501, TS 23.502, TS 23.247 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
5QI
5G QoS Identifier
AL-FEC
Application Layer FEC
DN
Data Network
FEC
Forward Erasure Correction
MBS
Multicast-Broadcast Services
MB-SMF
Multicast-Broadcast Session Management Function
MB-UPF
Multicast-Broadcast User Plane Function
MBSF
Multicast-Broadcast Service Function
MBSTF
Multicast-Broadcast Service Transport Function
LTE
Long Term Evolution
NEF
Network Exposure Function
PCF
Policy and Charging Function
PDU
Protocol Data Unit
QoS
Quality of Service
SDU
Service Data Unit
UE
User Equipment
