We’d like to draw parallels and compare and show to readers How 4G LTE is Different from GSM. The underlying multiplexing schemes in both 2G (GSM) and LTE appear similar: in both cases, multiple users are handled by ensuring that no two users send messages on the same frequency bucket at the same time (i.e., both technologies use a combination of frequency division and time division).
However, GSM is quite rigid in its resource allocation: a user is assigned one frequency bucket at the start of the session and he gets to send messages within that frequency bucket once in every eight time slots. Further, the allocation is frozen at the beginning of the session and remains fixed throughout the session.