eNB Functionalities
eNodeB The eNB element of LTE is responsible for radio transmission and reception with UE. eNB provides the required functionality for the radio resource management (RRM), including admission control, radio bearer control, scheduling of user data, and control signaling over the air interface. In addition, eNB takes care of the ciphering and header compression over the air interface. The clearest difference between UTRAN and E-UTRAN can be seen in the role of the base station. The eNodeB of LTE now includes basically all the functionalities that were previously concentrated on the RNC of the UTRANsystem. In addition, the traditional tasks of the NodeB are still included in the new eNodeB ( eNB ) element. eNB works thus as the counterpart of the UE in the radio interface but includes procedures for decision making related to the connections. This solution results in the term “flat architecture” of LTE, meaning that there are le...