What is reselection LTE?
Cell Reselection is a kind of mechanism to change cell after UE is camped on a cell and stay in IDLE mode. This is to let UE get connected to cell which has the best condition among all the cells to which the UE is allowed to camp on.
What is cell search in LTE?
Cell searching is a procedure in which a UE achieves time and frequency synchronization with a cell, obtains the physical cell identifier (PCI), and learns the signal quality and other information about the cell based on the PCI. A UE performs cell search on all frequencies before selecting or re-selecting to a cell.
What is the difference between handover and redirection in LTE?
In Handover procedure, target cell allocates all the required radio resources (Radio bearers and dedicated PRACH resource) upfront for the UE to move seamlessly. UE stays in connected mode during this procedure. In Redirection procedure, target cell will not be allocating any radio resources upfront.
What is cell selection?
When you power on the mobile device, in most case the device is under a circumstance where it sees many base station (eNode B) around it. For this UE goes through a specific decision making process to pick up a specific base station (cell) to register, this specific decision making process is called ‘Cell Selection’.
What is LTE Handover?
Abstract: Handover in LTE occurs when a device moves from the cell coverage serving it towards another; a process where the user established session must not be interrupted due to this cell change.
What is the cell selection and reselection process in WCDMA?
WCDMA CELL SELECTION AND RESELECTION PARAMETERS fMTN Ghana INTRODUCTION • The cell selection and reselection procedures allows the UE to look for a suitable cell in the selected PLMN and camp on it. • The measurement used in the cell selection and cell reselection processes are CPICH RSCP and CPICH Ec/No.
How to detect lower priority LTE frequencies in WCDMA cell?
Using the eutraDetection parameter in SIB19, you can make UE to detect and display the presence of lower priority LTE frequencies while it is in WCDMA cell. LTE SIB6 specifies the WCDMA frequencies (DL ARFCN) and the parameters used for absolute priority based cell reselection. How Cell Reselection Priority is determined?
What is the cell reselection priority in LTE?
LTE cell reselection uses priority based levels. (These priorities can be specified in LTE SIB4,5,6,7 and RRC Connection Release). Priority 0 indicate the lowest priority and 7 indicate the highest priority. The priority cannot be same for WCDMA and LTE, meaning that it must be set differently for different RAT.
What is the UE’s cell reselection policy?
Note 2 : The UE shall only perform cell reselection evaluation for E-UTRAN frequencies and inter-RAT frequencies that are given in system information and for which the UE has a priority provided. Note 3 : The UE shall not consider any black listed cells as candidate for cell reselection