Performance evaluation of pre-handoff schemes for vehicular ad-hoc networks

There are two main types of applications for vehicular ad-hoc networks (VANET): safety applications and user applications (such as entertainment and mobile commerce). For user applications, Internet connectivity is a necessity. However, it is challenging to provide fast handoff for vehicles in a VANET due to the rapid movement of vehicles. Previous studies have showed that the time required by the handoff procedure is significant compared with the time of a continuous Internet connection in a VANET. This paper analyzes the performance improvement for VANET handoff with pre-handoff schemes.