What does the term 'handoff' refer to in GSM networks?

What does the term 'handoff' refer to in GSM networks?

• A. Switching from analog to digital transmission
• B. Transferring a call between frequencies
• C. Transferring an ongoing call between cell sites
• D. Ending a call when the signal is weak

Answer: (C)

The term 'handoff' in GSM networks specifically refers to transferring an ongoing call between cell sites. This process is essential for maintaining call continuity as a mobile user moves out of one cell's coverage area and into another. In a GSM network, when a user is on a call and moves into a different cell area, the network needs to seamlessly transfer the call to the new cell site while ensuring that the call quality remains stable and uninterrupted. This is achieved through a controlled and coordinated process that involves the mobile device and the network switching the connection from one base station to another. Handoff can occur in different forms, such as hard handoff, where the connection to the current cell is broken before or as the new connection is established, and soft handoff, where connections to multiple cells are maintained simultaneously during the transition. The successful execution of handoffs is critical for the user experience in mobile communications, especially in dynamic environments where users are frequently on the move.

The term 'handoff' in GSM networks specifically refers to transferring an ongoing call between cell sites. This process is essential for maintaining call continuity as a mobile user moves out of one cell's coverage area and into another.

In a GSM network, when a user is on a call and moves into a different cell area, the network needs to seamlessly transfer the call to the new cell site while ensuring that the call quality remains stable and uninterrupted. This is achieved through a controlled and coordinated process that involves the mobile device and the network switching the connection from one base station to another.

Handoff can occur in different forms, such as hard handoff, where the connection to the current cell is broken before or as the new connection is established, and soft handoff, where connections to multiple cells are maintained simultaneously during the transition. The successful execution of handoffs is critical for the user experience in mobile communications, especially in dynamic environments where users are frequently on the move.