Rrc messages in lte

1. What are RRC messages in LTE?
2. What are RRC states in LTE?
3. What are RRC and NAS messages?
4. What is the purpose of RRC re configuration message?

What are RRC messages in LTE?

The RRC protocol is the signaling exchanged between the mobile and the evolved Node Base station (eNB) over the LTE-Uu radio interface. The RRC protocol performs the following functions: – Broadcast of system information related to the characteristics of the radio interface.

What are RRC states in LTE?

In this release, LTE RRC has only two states, RRC_IDLE and RRC_CONNECTED. This version includes suspend/resume of RRC connection.

What are RRC and NAS messages?

The RRC is the highest layer in the control plane of the Access Stratum (AS). The RRC also transfers messages of the Non-Access Stratum (NAS), which is located above the RRC layer. NAS messages are used to control communications between a UE and the Evolved Packet Core (EPC).

What is the purpose of RRC re configuration message?

A RRC connection reconfiguration procedure is used to establish, modify or release radio bearers (e.g. DRBs (Data Radio Bearer)). In LTE, RRC connection reconfiguration also involves setting up a default EPS (Evolved Packet System) bearer between the UE and a core network (CN).