How does WI-FI offloading work?

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Alessandro Bazzi

Just a paper I wrote on the topic few years ago if you are interested, discussing the use of WLAN to offload voice calls from cellular networks:

"WLAN hot spots to increase UMTS capacity", IEEE PIMRC 2010, Istanbul (Turkey), 26-30 September 2010. DOI: 10.1109/PIMRC.2010.5671741

https://drive.google.com/file/d/0B9p2h9CFpXT7VW4wZU8zdURtejQ/view