Smartphones growth is demanding higher data usage with 3G and LTE, this data usage is expected to explode going forward. Mobile industry has been looking at using Wi-Fi as a complementary accesstechnology. With theadvent of dual-mode handsets, Wi-Fi has become an access network alternative primarily to enhance coverage in doors. Currentestimates show already more than 60% of content delivered to smartphones is provided over Wi-Fiaccess networks.
Non-3GPP accesses can be split into two categories: the "trusted" ones and the "untrusted":
Trusted non-3GPP accesses can interact directly with the EPC (Enhanced Packet Core) LTE network.
Untrusted non-3GPP accesses interwork with the EPC via a network entity called the ePDG (for Evolved Packet Data Gateway). The main role of the ePDG is to provide security mechanisms such as IPsec tunneling of connections with the UE over an untrusted non-3GPP access.
ePDG Primary Features:
Integration of multiple core network functions in a single node
Superior performance and backhaul security through IPSec tunnels, tunnel set-up rates, throughput, and deep packet inspection (DPI)
Real-time subscriber, service, and application intelligence with enforcement
Sasken is actively working with industry leaders in enabling Wi-Fi offload:
ePDG support in 4G LTE mobile devices (VPN tunneling for Multiple PDNs over Wi-Fi)
Sasken is a specialist in Product Engineering and Digital Transformation providing concept-to-market, chip-to-cognition R&D services to global leaders in Semiconductor, Automotive, Industrials, Smart Devices & Wearables, Enterprise Grade Devices, Satcom and Transportation industries.
Sasken Technologies Ltd (formerly Sasken Communication Technologies Ltd) 139/25, Ring Road, Domlur, Bengaluru 560071, India CIN# L72100KA1989PLC014226