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The growing of the internet use is proportional with the growing of IP address needs, but the increasing of the IP use is not equal with the number of available IPv4. Then, IPv6 was developed as a solution to overcome the limited amount of IPv4 address. Readiness of various aspects ranging from infrastructure to a service provider is required to implement IPv6. In order to improve the quality of IPv6...
The Proxy Mobile IPv6 (PMIPv6) have been widely studied as a mobility management protocol to effectively use the limited wireless resources. Recently, there have been some researches to apply PMIPv6 to multicasting, which is core technology of Internet broadcast system. However, PMIPv6 based multicasting has a problem in that it shows the disconnection of services during the handover because it does...
Future wireless networks will coexist and combine resources over an IP-based infrastructure for ubiquitous connection support. Thus, to support non-perceptible connection migration between the heterogeneous wireless networks in this converged environment during mobility, seamless vertical handover mechanisms are a necessary requirement. Seamless handover mechanisms ensure non-perceptible interruptions...
Multimedia applications have been the key driving force in converging fixed, mobile and IP networks. A major hurdle in the realisation of this convergence is obtaining Quality of Service from a heterogeneous, best-effort service network. Interactive voice requires strict bounds on delay, jitter and packet losses, video adds significant bandwidth requirements to the network, while Internet only makes...
We conduct experiments in a LAN environment to determine the impact of IPsec and 6to4 encapsulation on VoIP quality in future IPv6 networks. We measure VoIP performance in the presence of varying background traffic for each of four IPsec scenarios with IPv6 and 6to4 encapsulation, with and without NAT, and compare with IPv4. The scenarios reflect situations commonly encountered in today's VPNs including...
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