IEEE802.21 Optimized Handover Delay for Proxy Mobile IPV6

Next generation wireless networks are envisaged to be a combination of different but complementary access technologies. Interworking of these heterogeneous wireless networks will provide ubiquitous access to roaming network users. Thus, a seamless mobility mechanism with low handover delay to maintain active communication flows during handover across these networks is required. Several solutions, mainly host-based localized mobility management schemes, have been widely proposed to reduce handover delay in heterogeneous wireless networks. However, the handover delay remains high and unacceptable for delay-sensitive services.