Vortrag Diplomarbeit

Handover Performance Analysis and Comparison of MIPv6 and mSCTP in a Wireless Environment

Mobility management is one of the key enabling requirements of the 4th generation net-works (or NGN), which needs to take into account the mobility of not only mobile hosts but entire mobile networks. The key challenges that must be addressed by any mobility management protocol will be to provide seamless handovers to mobile entities moving in a heterogeneous wireless access network environment. Another challenge would be to enable the mobile entities to move seamlessly across the borders of IPv4 and IPv6 network. To achieve this some standard protocols such as SCTP and MIPv6 have been pro-posed along with several functional extensions. MIPv6, for example, is a Network Layer (L3) mobility management protocol that enables a Mobile Node to change its point of connection in the Internet regardless of the underlying wireless access technology, and ensuring session continuity. To manage the mobility of mobile networks (cars, buses, trains etc.,) IETF has ex-tended the MIPv6 protocol by proposing a Network Mobility (NEMO) protocol. SCTP operation, on the other hand, has been defined at the Transport Layer (L4) that pro-vides global roaming ubiquitous communication services to mobile users. With two different mobility management protocols at two different layers, it is impera-tive to compare and analyze their performance, specifically in the more challenging context of mobile networks moving in an IPv4/IPv6 hybrid heterogeneous network, and give appropriate recommendations. Furthermore a theoretical unified security concept has to be developed which secures the communication and mobility in a heterogeneous network. Due to the influence of security mechanism the performance of handover process has to be analyzed.