ATTACH COMPLETE is sent in response to ATTACH ACCEPT message. This message will be sent by UE to Network. Attach Complete is piggy backed with RRC Connection Reconfiguration Complete. The total RRC Connection Reconfiguration Complete message will consist of: RRC : RRC Connection Reconfiguration Complete + …
LTE attach accept message is sent by the network to UE. It is the response for ATTACH REQUEST. Similar to ATTACH REQUEST, ATTACH ACCEPT will be included in RRC CONNECTION RECONFIGURATION message. Including a message inside another message is called as piggy backed message. The result …
In this tutorial we shall see what is attach request and the Information Elements (IE) present in Attach Request. Attach Request is a NAS layer message procedure. It will be initiated by UE to MME. As eNB will not have NAS protocol, the Attach request will …
The purpose of this procedure is to: – Establish/modify/release RBs, – To perform Handover – To configure/modify measurements – NAS dedicated information may be transferred from ENB to UE. RRC Connection Reconfiguration+ NAS : Activate Dedicated EPS Bearer Context Request Direction: E-UTRAN => UE Signalling Radio …
Once the Random access procedure is completed, the next step is to RRC connection establishment procedure. This procedure will change the state of RRC from RRC_IDLE to RC_Connected. UE must change the state from RRC Idle to RRC Connected before it can transfer any application data …