> According to the LTE specs, cell-towers don't have to perform UE hand-overs like in GSM/UMTS. The phone starts camping on the next tower while remaining in RCC_IDLE mode without emitting data. Not only does this save battery, it also means operators don't really know where the phone is as long as it remains in the same LAC.
And another tip: I wanted to know what "very expensive" means for LTE-related literature, so I searched DuckDuckGo for the first book mentioned (sold on Amazon for $105) and the second result was an OCR'd PDF at huaweicup.ru