Mobile Internet Protocol v6 (MIPv6) is a protocol that allows a mobile node (MN) to transparently maintain connections while moving from one subnet to another. Using the route optimization (RO) method in MIPv6 gives optimized routing and helps avoid triangular routing. In real-time applications such as video conference applications, quality of service (QoS) issues will increase especially in the handover process between subnets. This study investigates the performance of MIPv6 handover in IEEE802.11e standard in wireless environments. The investigation considers that handover for the MN moves between 2 home agents (HA). The system model’s fundamental performance limits are measured by packet delay variation, HA binding delay, and wireless local area network (WLAN) media access delay analysis metrics in video conference applications. According to the results of real-time simulations, network performance during the handover process can be effectively improved as the packet lost during handover decreased significantly from 43% in IEEE802.11b distributed coordination function (DCF) to 36% in IEEE802.11e hybrid coordination function (HCF). Furthermore, experimental results prove that IEEE802.11e connects to new HA roughly 20% quicker than IEEE802.11b, and IEEE802.11b has 100 times more time delay than IEEE802.11e. In addition to this, the WLAN media access delay of IEEE802.11b often reaches 0.00011 s as compared to 0.000005 s of IEEE802.11e. Thus, it is evident that the performance of IEEE802.11e in terms of packet delay variation, HA binding delay, and WLAN media access delay is better than IEEE802.11b. Likewise, it is noted that network speed during the handover process in IEEE802.11e can be considerably improved in a MIPv6 scenario.

IPv6 protocol is the last protocol for IP protocol. IPv6 protocol based on 128 bits for addressing and has many features comparing with old one IP protocol (or which called IPv4 protocol) that is still using till now in many companies and based on 32 bits in addressing. Mobile IPv6 is protocol that using for mobile nodes that moves from it home place to other places and depends on IPv6.In our Study we will focus on implementing Mobile IPv6 MIPv6 in two networks, one is pure IPv6 network and another is mixed networks that consisting of IPv4 and IPv6 networks. We used in our study mechanism 6 to 4 to connect between IPv4 nodes and IPv6 nodes. In these two scenario Mobile node MN used MIPv6 between two access routers. The aim of this paper is to study IPv6 traffic inside MN and IPv4 and IPv6 internet clouds and finally throughput for WLAN using many kinds of application in this topology like FTP, Email, Terminal server applications. Optimized Engineering Tools (OPNET) 14.5 is used to verify of topology and get the results. The result of our study shows that working in pure IPv6 networks for MN and for Internet IPv6 clouds better than working in 6 to 4 networks. Although from these result, there is no different actually in IPv4 clouds when we using pure IPv6 and 6 to 4 IPv6 networks if we use it after IPv6 cloud.