Question: When RAN-Support-Info or CHEM features are enabled for PCC rules with QCI of 1, how does the PCEF determine the downlink and/or uplink maximum packet loss rate value(s) upon receiving Max-PLR-DL AVP and/or Max-PLR-UL AVP from the PCRF?
Option 1: The PCEF sets the values to the lowest one for each direction among all values sharing the QCI=1 bearer.
Option 2: The PCEF averages the received values with existing packet loss rates for QCI=1 bearers.
Option 3: The PCEF overrides all existing packet loss rates for QCI=1 bearers with the highest received value.
Option 4: The PCEF ignores the received AVPs if current packet loss rates are lower.
Explanation: This is because, when the PCEF receives Max-PLR-DL and/or Max-PLR-UL AVP for QCI of 1, it minimizes packet loss by selecting the lowest value among all shared QCI=1 bearers for each direction, optimizing network performance and user experience.