Different types of traffic and signaling require different bearer modes, mapping modes, and parameter configurations. Appropriate parameter configurations help increase the system capacity and guarantee the QoS.

Based on the type of transferred data, the radio bearers are classified into two types:

- Signaling Radio Bearer (SRB)

- Traffic Radio Bearer (TRB)

The radio bearers refer to all the radio resources allocated by the UTRAN for a service. The radio bearers feature involves RAB mapping and layer 2 (L2) parameter configuration.

? RAB mapping is used to assign an RAB to a typical service and allocate a suitable transport channel to the service.

? L2 parameter configuration affects the quality and rate of data transmission.

The RAB mapping and L2 parameter configuration are specific to services.

If an RAB is carried on the HSDPA or HSUPA channel, some special parameters are available to control data transmission and reception.

important

good one.

what is the diff between RAB and RB?

This document is very well done

This document is very well done

Very useful for 3G network

wow.. nice note..

useful document, thanks