Cell ID (LTE-Advanced)
Auto
Auto, Manual: 0-503, E-TM: 1 per cc
sets the physical (PHY Physical Layer) layer Cell ID. This PHY-layer Cell ID determines the Cell ID Group and Cell ID Sector. There are 168 possible Cell ID groups and 3 possible Cell ID sectors; therefore, there are 3 * 168 = 504 possible PHY-layer cell IDs.
- The demodulator will automatically detect the Cell ID.
- The PHY-layer Cell ID must be specified for successful demodulation.
- The Cell ID value is ignored, and a value of 1 is instead used and auto-incremented for each additional CC for LTE Long Term Evolution-A in accordance with E-TM specifications.
The physical layer cell id can be calculated from the following formula:
PHY-layer Cell ID = 3*(Cell ID Group) + Cell ID Sector
When Sync Type is set to , the Cell ID selection will be disabled, and Cell ID must be specified manually. This is because the demodulator needs to know the values of the C-RS Cell-specific RS sequence to use for synchronization and because Cell ID determines these values. See RS-PRS for more information.
Cell ID Sector and Group information can be found on the Error Summary trace.
Cell ID Sector determines the Zadoff-Chu Root Index used to generate the Primary Synchronization Signal (P-SS Primary Synchronization Signal):
- Cell ID sector 0 = ZC Root Index 25
- Cell ID sector 1 = ZC Root Index 29
- Cell ID sector 2 = ZC Root Index 34
Normally, the same sequence used to generate P-SS is used to generate RS, but a custom C-RS can be used by setting RS-PRS to .
See Also
