Recently, I have managed to read an interesting article about Facebook open sourcing Magma in order to extend mobile network deployments in remote, underdeveloped and generally rural areas. Magma is central (and the most complex) part of the LTE network, its core i.e. full name EPC (Evolved Packet Core).
This brings a lot of possibility not only for operators but for universities, cities and companies to build small-scale private networks (private LTE). Another benefit of this packet core is the fact that it’s distributed and it can be very close to the base station. Due to this fact Magma uses a local breakout so there is no need to tunnel traffic to some remote telcos central office to access the Internet.
Here’s the article.