Transparent Mode (TM)

TM is one of the modes supported by RLC. Characteristics of TM are given below

Transparent: The TM passes transparently through the RLC layer, meaning that no header information is added by the TM entity

Single direction: The TM operates in a single direction, i.e. it is a connectionless protocol.

Segmentation: The TM can provide some limited segmentation functions where higher layer SDUs are broken into a number of RLC PDUs

Buffering and discard; The TM can provide buffering and discard functions depending upon its configuration from higher layers

Figure showing TM entities given below:

The RLC TM PDUs are sent via a number of logical channels to the MAC layer below. The logical channels used and its purpose for TM is given below

Related Topics: RLC, Channel Mapping