What is PS handover in LTE?

What is PS handover in LTE?

The LTE handover is broadly divided into a backward handover (PS handover) and forward handover. In the former, the network performs cell switching and notifies the mobile terminal of the destination cell, and in the latter, the mobile terminal performs autonomous switching to pick up the destination cell.

What is handover in UMTS?

3G UMTS soft handover Soft handover is a form of handover that was enabled by the introduction of CDMA. Soft handover occurs when a UE is in the overlapping coverage area of two cells. Links to the two base stations can be established simultaneously and in this way the UE can communicate with two base stations.

What are the types of handover in LTE?

LTE supports two types of handover: X2-based handover and S1-based handover.

What is inter handover in LTE?

In the LTE-to-UMTS Inter RAT handover, the source eNodeB connects to the S-MME and S-SGW while the target RNC connects to the T-SGSN and T-SGW; both the source and target SGWs connect to the same PGW. This procedure is divided into two parts for clarity, Preparation and Execution.

What is X2 handover?

The X2 handover procedure is performed without Evolved Packet Core (EPC) involvement, i.e. preparation messages are directly exchanged between the S-eNB and T-eNB. The release of the resources at the source. side during the handover completion phase is triggered by the T-eNB.

What is handover and types?

Handover is process of transferring the call from one cell to other while moving in different cells it is of two types: hard handover and soft hand over.

What is soft and hard handover?

Hard Handover:- When mobile(in Call) switches to a new sector/Cell which is on different frequency , then it performs hard Handover. It is basically an inter-frequency handover. SOft Handover:- When mobile ( in Call) switches to a new sector/cell which is on the same frequency then it is called a soft handover.

What is X2 and S1 handover in LTE?

The X2 procedure is used to handover a UE from a source (H)eNB to a target (H)eNB for which the MME is unchanged. Two procedures are defined depending on whether the serving GW (S-GW) is relocated, see [4], [5]. The S1 procedure is used by the source eNB to initiate a handover through the S1-MME interface, see [4].

What is intra and inter handover?

Intra-LTE Handover: In this case source and target cells are part of the same LTE network. Inter-LTE Handover: Handover happens towards other LTE nodes. ( Inter-MME and Inter-SGW) Inter-RAT: Handover between different radio technologies. For example handover from LTE to WCDMA.

What is S1 and X2 handover?

What are the 4 types of handover available in GSM?

GSM Handover from Network Side Intra-BSC handover: This handover type is serviced between cells served by same BSC. Inter-BSC handover: This handover type is serviced between cells served by different BSCs. Inter-MSC handover: This handover type is serviced between cells served by different MSCs.

What are the different types of handovers?

There are two types of handover, vertical and horizontal. Horizontal handover occurs when a device moves within one type of network technology under one operator. For instance a mobile phone user moving within their provider’s network must switch cellular towers as they move in and out of range of different towers.

What is the difference between soft and softer handover?

In the case of soft handover the mobile station is in the overlapping cell coverage area of two sectors belonging to different base stations; softer handover is the situation where one base station receives two user signals from two adjacent sectors it serves.