Question: In a Universal Subscriber Identity Module (USIM) Application Toolkit (USAT), if a Mobile Equipment (ME) receives a "Geographical Location Request" command while already processing a previous one, how does it handle the new request?
Option 1: The ME cancels the ongoing location retrieval and starts processing the new request.
Option 2: The ME ignores the new request until the current one is completed.
Option 3: The ME sends an error response to the UICC indicating command overlap.
Option 4: The ME attempts to process both requests concurrently.
Explanation: According to the USAT specifications for handling geographical location requests, if the ME receives a new "Geographical Location Request" before completing the previous one (i.e., before sending the "Geographical Location Reporting" ENVELOPE command), it shall ignore the latest location request. This ensures that the ME does not get overwhelmed with concurrent requests and maintains the integrity of the location retrieval process.