A Technology Blog

RRC

LTE Packet Data Convergence Protocol (PDCP) Overview

By agaur on October 6, 2012
PDCP

Similar to UMTS technology, Packet Data Convergence Protocol (PDCP) is located above the RLC layer at UE as well as in eNB. However in LTE, all user data goes via the PDCP layer as ciphering is performed in PDCP.  The main functions of PDCP are IP header compression (UP), ciphering and integrity protection (Control Plane only). PDCP layer also carries RRC signaling messages as well so it is part of control plane as well.

LTE Radio Interface – Layers, Channels & Physical Layer Functions

By kamal on September 29, 2012
LTE Radio Interface Layers

LTE radio interface consists of 3 layers,

Layer 1 – Physical Layer
Physical layer offers data transport services to MAC layer.
Main functions of physical layer include: Mapping of transport channels on to the physical channels, forward error correction (FEC), Modulation & Coding etc.
Layer 2 Sublayer – Medium Access Control (MAC)

What all new protocols 3GPP Long Term Evolution (LTE) technology brings in?

By agaur on September 1, 2012

With Release 8, 3GPP has introduced a whole new set of protocols as both radio access network and core network have evolved from the earlier 2G & 3G Networks. In LTE architecture, evolved core network includes Mobility Management Entity (MME), Serving Gateway  (SGW), Packet Data Network Gateway (PDN GW) where as evolved radio network has only E-UTRAN NodeB (eNB).

Subscribe to RSS - RRC