Difference between a1ThresholdRsrpSec and a1ThresholdRsrpPrime

Specs & Protocol Testing
1

Hi Experts.
What is the difference between a1ThresholdRsrpSec and a1ThresholdRsrpPrime?
Vendor is Ericsson.

2

In Ericsson’s context, “a1ThresholdRsrpSec” and “a1ThresholdRsrpPrime” refer to different parameters related to handover decision-making in LTE (Long-Term Evolution) or NR (New Radio) networks. Here’s the difference between the two:

**a1ThresholdRsrpPrime:**
    This parameter defines the primary threshold for RSRP (Reference Signal Received Power) measurements. RSRP is a key metric in evaluating the quality of the received signal from a cell tower or base station.
    When the measured RSRP falls below this threshold, it indicates that the serving cell's signal quality is deteriorating, possibly necessitating a handover to a different cell.

**a1ThresholdRsrpSec:**
    This parameter defines the secondary threshold for RSRP measurements.
    It typically sets a lower threshold compared to the primary threshold (a1ThresholdRsrpPrime).
    If the RSRP falls below the primary threshold (a1ThresholdRsrpPrime), the network evaluates whether the RSRP is still above this secondary threshold. If so, it might not trigger an immediate handover but could initiate preparation for handover or other network optimization actions.

In summary, while both parameters relate to RSRP measurements for handover decisions, they serve different purposes in determining when a handover should be initiated. The “Prime” threshold is usually higher and more critical for immediate handover decisions, while the “Secondary” threshold provides a buffer or additional criteria for network optimization purposes.