LTE employs a new network architecture made up of multiple Evolved Packet Cores (EPCs) that communicate with each other and with evolved universal terrestrial radio access network base stations (eNBs). Each EPC contains a Mobile Management Entity (MME) and a System Architecture Evolution Gateway (SAE). The eNB stations communicate with the EPCs, with each other, and with user equipment (UE).
Click Uplink in the tree view to open the Uplink node. The Uplink node enables you to set cell parameters.
Accesses a dialog box from which you can select a base channel configuration.
Opens the PRACH Wizard from which you can select a PRACH preamble parameters.
Choice: 1.4 MHz (6RB) | 3 MHz (15RB) | 5 MHz (25RB) | 10 MHz (50RB) | 15 MHz (75RB) | 20 MHz (100RB)
Default: 10 MHz (50RB)
Double-click or use the drop-down menu to set the system bandwidth and number of Resource Blocks (RB). When you select a system bandwidth, the software automatically adjusts the value in the cell and the cell.
The resource blocks and some parameters are reconfigured by changing the System Bandwidth parameter, similar to when a is executed.
Displays the total number of resource blocks for the uplink. The value in this cell is set by the software based on the setting.
Displays the total number of occupied sub-carriers for the uplink. The value in this cell is set by the software based on the setting.
Default:
LTE-A and LTE-A Pro (E-UTRA & eTMC): 1.25kHz
LTE-A Pro (NB-IoT): 3.75 kHz
Displays the subcarrier spacing for the uplink.
Default: 144
Displays the number of consecutive subcarriers in an uplink resource block.
Choice: Off | On
Default: Off
Double-click or use the drop-down menu to turn PRACH DFT Swap on or off.
PRACH DFT Swap influences how data is mapped to resource elements in the PRACH channel after discrete Fourier transform is performed. PRACH DFT Swap can be turned on or off to provide two different interpretations of how data should be mapped to resource elements in PRACH channels.