Sequence

Root sequence index

Root sequence index
  1. What is root sequence index?
  2. What is root sequence index in 5g?
  3. What is root sequence in LTE?
  4. Why is Rach in LTE?

What is root sequence index?

In mobile wireless networks, the Root Sequence Index (RSI) is used to allocate uplink channels between the user equipment and the base station. The assignment of RSIs close-in-range to neighbor radios may cause collisions leading to failures on service establishment and performance degradation.

What is root sequence index in 5g?

Root Sequence Index - Sets the root sequence index for the selected PRACH. The root sequence index is consecutive to 837 when LRA1) Random Access, or 2) Receiver Address = 839 and to 137 when LRA = 139. Zero Correlation Zone Config - Sets the number of Root Sequences required per cell for the selected PRACH.

What is root sequence in LTE?

Logical Root Sequence Index

This parameter is read-only when Auto-configuration is set to On. The Logical Root Sequence Index is the value of RACH_ROOT_SEQUENCE which is the logical index for the Zadoff-Chu sequence used for PRACH preamble generation.

Why is Rach in LTE?

RACH is an Uplink Transport Channel which is used for initial Random Access. The major function of RACH is to allow the UEs to get Uplink Synchronization. RACH plays an important role in the transmission of Uplink Scheduling Request.

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