IEEE Communications Magazine (IEEE COMMAG)
Volume 51, Issue 3, p.96 - 102 (2013)
Toward Network Controlled IP Traffic Offloading
Jouni Korhonen - Renesas Mobile / Nokia Siemens Networks
Teemu Savolainen - Nokia
Aaron Yi Ding - University of Helsinki
Markku Kojo - University of Helsinki
Abstract:
Operator controlled IP traffic offloading in cellular networks
has been a lively topic in both product and standard development
during recent years. Specifically, 3GPP has developed multiple
IP traffic offloading solutions for their system architecture,
typically requiring 3GPP-specific modifications for user equipment.
We argue that an adequate lightweight access technology agnostic
IP traffic offloading system is achievable with a generic internet
layer solution. Such a solution can still utilize 3GPP system
properties for operators to push offloading policies securely into
mobile devices. We discuss existing 3GPP-specified offloading
solutions and present three variations of our internet layer
traffic offloading implementations, and compare them against
3GPP-specified solutions. Our hands-on experience in operator
networks shows that such a direction is feasible and promising.
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