Page 265 - 5G Basics - Core Network Aspects

Core network aspects 1

The dotted black arrows show peer-to-peer relationship between NGN and multi-connection architecture.

The various access points in multi-connection architecture correspond to components of the transport
functions in NGN.
The access control functional entity and access network correspond to components of transport functions in
NGN.
Multi-connection media function corresponds to components of transport control functions in NGN.
The multi-connection service function corresponds to components of service stratum in NGN.

The multi-connection control function coordinates all of multi-connection related functions to cater for all
the active access networks.

8 Security considerations

Different access networks, such as trusted access and untrusted access, impose different security policies
controlled by different access network operators. For example, the airports tend to prepare a free Wi-Fi
which is open to the public, while the operators provide chargeable GSM and/or UMTS and/or LTE for their
service subscribers. Based on various security requirements for the distinct networks, there are two main
aspects for multi-connection architecture security consideration:
The multi-connection architecture will bring new security requirements across the functional entities
supporting multi-connection. For example, when data is transferred across multiple access technologies in a
coordinated manner, and these access technologies have different authentication schemes, the MC-control
function will need to ensure that the overall security requirements for the service is supported.

255