Protocol Architecture of LTE Release 12
Keywords:
Evolved Universal Terrestrial Radio Access Network; Medium Access Control; Mobility Management Entity; Multimedia Broadcast Multicast Service; Packet Data Convergence Protocol; Radio Link Control.Abstract
Protocol architecture made for interfaces in the LTE network, contains user plane and control plane. For network infrastructure, protocols are divided into two layers, radio network layer and transport network layer and for air interface, non access stratum and access stratum. Transport channels from physical layer mapped into logical channels in medium access control sublayer through medium access control protocol data units. Data is send to packet data convergence protocol sublayer from radio link control sublayer by transparent mode, unacknowledged mode and acknowledged mode depending on accuracy. Packet data convergence protocol sublayer transfer user plane and control plane data to application layer after integrity protection. Radio resource control layer broadcast system information while application protocols control signaling messages. A complete description of protocol architecture is presented in this paper. Paper explains the structure of protocol data units. Specifications are defined in general approach.
