Handover Process in LTE
The source eNB issues a HANDOVER REQUEST message to the target eNB passing the necessary information to prepare the HO on target side (UE X2 signaling context reference at source…
Tag: rnti
How Downlink Control Information or DCI in LTE?
Downlink Control Information or DCI in LTE The PDCCH carries Downlink Control Information or DCI to indicate the resource assignment in UL or DL for one RNTI. A DCI can…
Random Access Procedure in LTE
When the UE has obtained system information, it has to request an RRCconnection. Like it has no dedicated resources, the UE requests the connection using the Random Access Procedure using…
How DL Channel works in LTE?
The PDCCH, Physical Downlink Control Channel, allocates the DL and UL resources. There is one PDCCH per sub-frame. It helps the UE retrieve the transport blocks from the PDSCH:…
Non-contention vs Contention Access procedure in LTE
Random access procedure is performed for the following five events: • Initial access from RRC_IDLE; • RRC Connection Re-establishment procedure; • Handover; • DL data arrival during RRC_CONNECTED requiring random…
Based on DCI formats Resource allocation in LTE
Based on DCI formats In LTE Three types of allocation are used: type 0: DCI formats 1, 2, 2A type 1: DCI formats 1, 2, 2A type 2: DCI formats1A,…
Different Tasks and States of RRC Protocol in LTE-EUTRAN
The RRC protocol for EUTRAN is responsible for the basic configuration of the radio protocol stack. But one should note, that some radio management functions (scheduling, physical resource assignment for…