Question: In a scenario where multiple short messages are waiting in the Service Centre (SC) for a mobile device, what action can the SC take to optimize the transfer process, and what is the resulting effect on the Visited Mobile Switching Centre's (VMSC) handling of the Mobile Station (MS)?
Option 1: The SC indicates to the SMS-GMSC that there are more messages to send, prompting the VMSC to keep the MS active until all waiting short messages are transferred.
Option 2: The SC sends each message individually, triggering separate authentication and paging processes for each, which the VMSC handles independently.
Option 3: The SC buffers incoming messages temporarily, only notifying the SMS-GMSC when a predefined threshold of messages is reached, after which the VMSC releases the MS.
Option 4: The SC relies on periodic polling by the MS to fetch new messages, with the VMSC releasing the MS between each poll.
Explanation: This approach optimizes the transfer process by minimizing overhead. By indicating that more messages are waiting, the SC leverages MAP procedures to keep the MS connected (thus avoiding repeated paging and authentication for each message), ensuring efficient transfer of all queued short messages before the VMSC releases the MS. This method enhances network efficiency and user experience by reducing latency between message deliveries.