How many message exchange during handover in cellular system?

During a handover in a cellular system, there are typically several message exchanges between the mobile device, the current base station (source), and the new base station (target). These exchanges usually include signaling messages for channel release, new channel allocation, and location updates. The specific number of messages can vary based on the type of handover (hard, soft, or seamless) and the network architecture, but it generally ranges from 5 to 10 messages. Additionally, there may be messages related to authentication and resource management, further influencing the total count.