
102 ◾ Mobile Evolution: Insights on Connectivity and Service
the EPC handles the control plane information required to manage the mobility of the mobile
devices while enabling virtually seamless user plane connectivity. Within the EPC, generic rout-
ing entities handle the ow of user plane trac between the mobile device and a PDN. e use
of generic routing entities, with well-dened and specied protocol interfaces, is a step toward
lowering capital and operational costs. e control, trac/bearer, policy, and database func-
tional entities and their interfaces, which are the building blocks of the EPS framework, are
shown in Figure 3.24.
e pro ...