UEs on which user can easily download applications from web sites are rapidly increasing in the world and a wide
variety of applications are constantly created and installed on the UEs. Specific applications can (intentionally or
unintentionally) cause congestion over RAN/CN. While network is congested, it is not desirable to allow these
applications to access the network in order to protect the network resources. Several SDOs identified key issues related
to network inefficiencies caused by such UEs and by the variety of applications.
On the other hand, for example in Japan, after the severe earthquake on March 11th, 2011, the packet based
communication applications that users can invoke to confirm the safety of their relatives are recognized as important
applications (e.g. Disaster Message Board (DMB) service, Disaster voice messaging service) when disaster occurs.
Therefore, Japanese government strongly expects Japanese operators to provide the connectivity at least for such
services even when the network is highly congested, while other services are barred to free up the resources for
This TR provides a study on Application specific Congestion control for Data Communication (ACDC).
This Study investigates the following aspects:
Identify the use cases and potential requirements to allow/restrict the communication initiation of particular
applications defined by operator, subject to regional regulations;
Gap analysis with existing access control mechanisms.