Question: What is a prerequisite for a User Equipment (UE) to support UL CA (Uplink Carrier Aggregation) related in-device coexistence indication in an E-UTRA network?
Option 1: The UE must support only LTE TDD (Time Division Duplexing) mode.
Option 2: The UE must have a specific RRC (Radio Resource Control) protocol version.
Option 3: The UE must also support general in-device coexistence indication.
Option 4: The UE needs to be capable of DL CA (Downlink Carrier Aggregation) only.
Explanation: For a UE to support UL CA related in-device coexistence indication, it is mandatory that the UE also supports general in-device coexistence indication, ensuring seamless management of potential interference issues within the device when multiple radio access technologies or frequencies are used simultaneously.