Question: How is an Extended S-RNTI Group identified for a set of UEs in the Serving Radio Network Controller (SRNC), based on the Extended S-RNTI values and the Extended S-RNTI bit mask index?
Option 1: By matching all bits of the Extended S-RNTI with the corresponding bits of the IE, up to and including the bit indicated by the Extended S-RNTI bit mask index, while ignoring more significant bits.
Option 2: Through an exact match of the entire Extended S-RNTI value with the IE, without any consideration for the Extended S-RNTI bit mask index.
Option 3: By comparing only the least significant bits of the Extended S-RNTI in the IE, up to the bit position indicated by the Extended S-RNTI bit mask index, and ignoring all more significant bits.
Option 4: Using a logical OR operation between the Extended S-RNTI values and the Extended S-RNTI bit mask index to determine group membership.
Explanation: This is correct because the identification process specifically involves matching the most significant bits down to the bit indicated by the Extended S-RNTI bit mask index, while intentionally disregarding the less significant bits. This selective comparison ensures that UEs are accurately grouped based on the defined criteria, facilitating efficient management within the SRNC.