1. About IPv6 in mobile networks

1.1 Overview of mobile network architecture

The successive architectures of mobile networks, from GSM (Global Systems for Mobile Communications ) to LTE/EPC (Long Term Evolution/Evolved Packet Core st) are specified within 3GPP (3 ^rd Generation Partnership Project). This organization regularly issues new releases that incorporate new requirements and functions.

While the first deployments were based solely on circuit core networks (CS) (see – for definitions of circuit and packet core networks), from release 97 onwards (or GPRS ), a packet core network (PS) was added to the circuit core network, enabling mobile customers to access data services, albeit with relatively limited throughput at first, but with higher...