부산대학교 도서관

The IEEE 802.11 based wireless LAN (WLAN) is most widely used for the multimedia and real time communication such as video streaming, Voice over IP (VOIP) video conferencing and other multimedia communications. A Mobile Node (MN) may move from one network to the other network performing a vertical handoff. The problem arises in the continuous data (multimedia traffic) transmission in the existing ISP mesh while frequently handover take place. To maintain the connectivity of an established multimedia traffic between two different networks using mobility management we propose an efficient algorithm which maintain the real time connection as well as preventing the data loss during transition from WLAN to EVDO. We experiment on our proposed algorithm by using a redundant buffer which stores the multimedia data in transition mode and transmits the data of alternate data samples extracted from the original analogous multimedia traffic. When the connection is re-established with the network, the sequential data stored and transmitted from the buffer will keep the communication i.e. multimedia streaming in the real time protocol mode and filtering out the delay caused by inter-frame gap (IFG) enhances the data extraction process.