Page 401 - 5G Basics - Core Network Aspects

Core network aspects 1

a) Content sharing during a voice call:

In this scenario, the content sharing service is related to the call. It is automatically terminated upon
call completion. The service is only provided to two parties, i.e., multiparty sharing is not supported.
Both video and image sharing are unidirectional.
b) Content sharing without a voice call:
In this scenario, the content sharing service is independent of the call, therefore it is possible to use
the content sharing service without a voice call. If the receiving user has multiple devices, the
content sharing requests are sent to all those devices.
In addition, the user can decide to accept the shared content on a different device rather than the
one he or she is using for the voice call, for instance, another device may have better display
capabilities.

6.5 Enhanced messaging

Enhanced messaging provides the user with the ability to exchange text or multimedia messages.
Enhanced messaging includes two scenarios: call related enhanced messaging and call independent
enhanced messaging.
Call related enhanced messaging services are supported by the multi-connection architecture; e.g., two
parties send a multi-media message and the phone call is transmitted through the CS network, while
the messages are transmitted through the PS network.
Enhanced messaging also supports standalone message function, one-to-one chat function and group chat
function.
a) Standalone message:
The standalone message function may be considered as an evolution of SMS/MMS messaging
services, because it provides better features; e.g., no restriction of message size, more content
types, and display reports for text messages. It includes both text and multi-media messaging
services and provides interworking capability with SMS/MMS.
b) One-to-one chat:

The one-to-one chat function enables users to exchange messages between two users instantly. It
provides a more real-time experience. It includes delivery and display notifications, and allows
reaching users while they are offline.
c) Group chat:
The group chat function enables users to exchange messages between several users instantly. It can
be converted from one-to-one chat by adding new users.

7 Architecture of eMMTel over multi-connection
The diagram below presents the architecture of the eMMTel service over the multi-connection architecture;
see [ITU-T Y.2027].

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