Radio Link Control (RLC) protocol services in LTE

Radio Link Control (RLC) protocol services in LTE, data transfer, without retransmission, upper layer, Radio Link Control (RLC) protocol, LTE Basic.

The Radio Link Control (RLC) protocol provides the following services:
  • Segmentation of SDU according to the size
  • Re-Segmentation of PDU
  • Radio Bearer to logical channel mapping
Transfer of data in 3 modes:
  • TM Transparent Mode
    Without retransmission. For real-time service.
  • UM Unacknowledged Mode
    Without retransmission, but error statistics (BLER)
    It can be used for the signaling.
  • AM Acknowledged Mode
    With retransmission. For non real-time services, like internet.
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);
  • Protocol error detection and recovery;
  • RLC SDU discard (only for UM and AM data transfer);

 

Article Topics :

Radio Link Control (RLC) protocol services in LTE, data transfer, upper layer, Radio Link Control (RLC) protocol, LTE Basic, segmentation, retransmission CHANNEL, control, dl, lte, lte downlink, mac, protocol, rlc, service, telecom, transport, ul, which rlc mode used for data transfer in lte