More than IP Bitpipes

With the development of novel applications specifically tailored for the mobile wireless environment and in addition to the already successful services which will be transferred from the fixed communication and from the Circuit Switched domain it is foreseen that the best-effort approach on delivering the services can not sustain the required quality of experience for the mobile users. In order to face this challenge the next generation mobile network core will offer more than IP bitpipes for communication adding QoS support.

In this scenario the mobile device connects to one access network. Based on its subscription profile, it will receive a default level of resources which enables it to exchange messages. Through this default resources any communication can be sustained, although it's not enough for the expected quality of experience.

If a service is established - any of the OpenEPC provided services: web browser video streaming, IMS voice or video etc. - the required resources for the service are reserved no matter of the degree of congestion on the access networks. This is perceived as an increase in the quality of experience for the services which communicate their requirements for QoS to the EPC.