Does anyone know what frequency they are using in other countries? In the U.S. they are using 2.5Ghz I believe, which does a lot of "bouncing" and not a lot of wall and foliage penetration. I don't know how they have everything back-hauled, which is probably the main issue, but the frequency may add to the inherent problems.
It may be the vendor equipment too. Whatever it is they are definitely making the LTE camp giddy.