Page 430 - 5G Basics - Core Network Aspects

1 Core network aspects

• FMC's service and application processing may depend on terminal device capabilities. Compatible
terminal device capabilities may be selected by end-to-end interaction between terminal devices,
or between the terminal device and the FMC service stratum according to the service and
application needs.

• Support of generalized mobility, which includes service mobility, user, terminal device and network
mobility. Reduced or partial mobility may be supported in some specific networks.
• A generic user profile for services which contains the criteria for session establishment and
connectivity and is applicable both in fixed and in mobile networks, and which is specific to an
individual user's subscription, containing, e.g., the user's address book, preferences, presence
options, billing and payment options, service subscriptions and authentication parameters.

8 FMC service requirements

The following service requirements are defined.

8.1 Access service support
FMC is required to provide access-independent service for users.

FMC is required to offer the user the choice to select a suitable access transport to obtain service.
NOTE 1 – Typical access transports include xDSL, WLAN, LAN, optical fibre and ATM, etc.
If the user has given specific permission to FMC to make a choice on his/her behalf, FMC may select from
available access transports without further user intervention.
NOTE 2 – This service allows users to choose an access mode, or makes a suitable choice on behalf of the user providing
seamless access and a better service experience for users.

8.2 Enhanced VPN
Enhanced VPN service is an access-independent virtual private service network supporting multiple terminal
types.
Enhanced VPN makes it possible to provide a consistent virtual private network service by using a variety of
public network resources, i.e., consistent VPN service across fixed networks, mobile networks and converged
networks, and a variety of terminal devices.
It is required to support the capability to allow users connecting to different public networks (i.e., PSTN,
PLMN, etc.). For this, it is required to support private network capabilities, such as use of a private numbering
plan.

8.3 Unified messaging
Unified messaging means users can receive several types of messages, such as short message service,
multimedia message service, instant messaging, e-mail, etc.
FMC is required to let an end user choose the message type to be received. The end user may express
message types to be received based on favourites, online state or terminal device type. FMC is required to
support all types of messages from the sender and to transcode messages as far as possible into a format
which the recipient is able to receive.

An example scenario is where a user could receive instant messages on his mobile phone as short message
service (SMS) messages when he is otherwise offline.

9 FMC capability requirements

The following general requirements for FMC capabilities are defined.
NOTE – Specific FMC charging, security, public service, reliability and interworking requirements are not given. Such
FMC requirements are deferred for further study.

420