Question: What is the purpose of the E-UTRAN initiated UE Context Modification procedure when split bearer option is applied to support dual connectivity operation?
Option 1: To update the User CSG Information in the Core Network.
Option 2: To request modifications on the established UE Context for membership verification.
Option 3: To trigger the addition of a hybrid HeNB as the SeNodeB without providing CSG Membership Information.
Option 4: To confirm the UE Context Modification Indication with the UE Context Modification Confirm message without verifying CSG Membership Information.
Explanation: The E-UTRAN initiated UE Context Modification procedure is used to request modifications on the established UE Context for membership verification when split bearer option is applied to support dual connectivity operation. This procedure involves the eNodeB sending a UE Context Modification Indication message to the MME, which includes the CSG Membership Information of the SeNodeB, and the MME verifying the CSG membership based on the provided information.