4G5GWorld has a new home now. Visit TelecomGrid for new stories and blogs!

Radio Link Control (RLC)

in Specification, LTE, RLC

RLC protocol layer exists in UE & eNodeb, It is part of LTE air interface control and user planes.

The main services and functions of the RLC sublayer include:

  • Transfer of upper layer PDUs;
  • Error Correction through ARQ (only for AM data transfer);
  • Concatenation, segmentation and reassembly of RLC SDUs (only for UM and AM data transfer);
  • Re-segmentation of RLC data PDUs (only for AM data transfer);
  • In sequence delivery of upper layer PDUs (only for UM and AM data transfer);
  • Duplicate detection (only for UM and AM data transfer);
  • Protocol error detection and recovery;
  • RLC SDU discard (only for UM and AM data transfer);
  • RLC re-establishment.

Protocol specification

3GPP TS 36.322 - Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification


Share this