Here are some links in support of this figure:
is not specified yet
This TS specifies the overall stage 2 level functionality for Policy and Charging Control that encompasses the following high level functions for IP-CANs (e.g. GPRS, I-WLAN, Fixed Broadband, etc.):
Flow Based Charging for network usage, including charging control and online credit control, for service data
flows and application traffic;
Policy control (e.g. gating control, QoS control, QoS signalling, etc.).
The present document specifies the Policy and Charging Control functionality for Evolved 3GPP Packet Switched
domain, including both 3GPP accesses GERAN/UTRAN/E-UTRAN and Non-3GPP accesses, according to
and TS 23.402
The present document specifies functionality for unicast bearers. Broadcast and multicast bearers, such as MBMS
contexts for GPRS, are out of scope for the present release of this document.
short Table of Contents for TS 23.203 Word version: 16.2.0
each title links to the equivalent title in the full ToC