Page 377 - 5G Basics - Core Network Aspects

Core network aspects 1

Figure 9-1 – Authorization and streaming establishment
1) MUE sends a streaming access request message to MSAC-FE, to require a specific streaming content.
2) MSAC-FE obtains streaming application and MUE information from MSUP-FE, to verify whether the
MUE has the permission to access this service.
3) If the MUE has the permission, MSAC-FE sends a content request message to MSCC-FE to obtain
related content.
4) MSCC-FE obtains streaming application and MUE related information from MSUP-FE, to verify
whether the MUE has the permission to access the content. If it has, the MUE is authorized to access
the content.
5) MSCC-FE prepares requested streaming content. The content may be previously obtained from
content providers, or be transmitted in real time, e.g., in a monitoring scenario.
6) MSCC-FE sends a content delivery request message to MSCD-FE to indicate that streaming content
is available for delivery.
7) MSCD-FE sends a connection establishment request to MAS-F, to request to establish connections
to transport streaming content to MUE.
8) MAS-F sends policy establishment request messages to an underlying SCF, even to multiple SCFs, to
request to establish a transmission policy.
9) SCF forwards this policy establishment request message to MPC-FE.
10) MPC-FE selects a set of QoS rules for a new connection based on the operator policy and the
information of the new connection.
11) MPC-FE makes policy rules for the streaming based on the policies, and sends policy rules to MC-FE.
12) MC-FE sends an ACK message to MPC-FE after receiving the policy rules. Hence, the connection
between the MUE and MSCD-FE is established.

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