Page 376 - 5G Basics - Core Network Aspects

1 Core network aspects

Through this reference point, MC-Streaming application control FE (MSAC-FE) retrieves application and user
profiles. These profiles include authorization information (e.g., whether the subscriber is permitted to view
the specific programme), service settings, user preferences, etc.
8.4.2 Reference point Uc

The Uc reference point exists between the MC-Streaming application-user profile functional entity (MSUP-
FE) and MC-Streaming content control functional entity (MSCC-FE).
Through this reference point, MC-Streaming content control functional entity (MSCC-FE) obtains security-
related information and content authorization information from the MC-Streaming application-user profile
functional entity (MSUP-FE) such as the subscriber's right to access a specific content. Uc is designed for
content authorization control (i.e., content security control).

8.4.3 Reference point Ac
The Ac reference point exists between the MC-Streaming application control functional entity (MSAC-FE) and
MC-Streaming content control functional entity (MSCC-FE).
Through this reference point, the MC-Streaming application control functional entity (MSAC-FE) can
optionally obtain service metadata and content protection information stored in MC-Streaming content
control functional entity (MSCC-FE).
The MC-Streaming application control functional entity (MSAC-FE) is recommended to use this reference
point to send service control and user interaction information to MC-Streaming content control functional
entity (MSCC-FE), such as play, fast forwarding, rewinding, pause, stop, etc. If needed, the MSAC-FE can
optionally send content control related requests to the MSCC-FE through this reference point, e.g., transcode
or edit a piece of media content.
8.4.4 Reference point Am

The Am reference point exists between the MUE and MC-Streaming application control functional entity
(MSAC-FE).
Through this reference point, the MUE sends the MC-Streaming related control request and subscriber's
interaction requests to the MC-Streaming application control functional entity (MSAC-FE), such as a request
for a specific programme.

8.4.5 Reference point Cc
The Cc reference point exists between the MC-Streaming content control functional entity (MSCC-FE) and
MC-Streaming content delivery functional entity (MSCD-FE).
This reference point is used to send content from the MC-Streaming content control functional entity (MSCC-
FE) to the MC-Streaming content delivery functional entity (MSCD-FE), such as specific programme content
which can be delivered utilizing the underlying network.
Through this reference point, the MC-Streaming content control functional entity (MSCC-FE) also sends the
MC-Streaming content delivery functional entity (MSCD-FE) the delivery control requests, e.g., starting or
stopping the delivery procedure as per a subscriber's request.

9 Information flows

9.1 Authorization and streaming establishment
Before accessing a streaming service, a MUE must be verified as having permission to access the service and
relevant resources, according to the subscriber's application profile. Afterwards, the streaming connections
can be established. This information flow generally occurs when a user accesses the service. It is shown as
Figure 9-1.

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