Technischer Bericht TCP-M6: Mobility Aware TCP Extensions For Mobile IPv6

— To provide higher layer transparency, Mobile IPv6 (MIPv6) hides mobility from transport layer such as TCP. However , it poses substantial impacts on TCP due to mobility issues, including packets loss, variation of packet size, and deviation of end-to-end transport delay, which may seriously degrade the TCP transport performance. This paper explores the impact of MIPv6 on TCP and proposes a scheme for MIPv6-aware TCP extensions by introducing a mobility-detection network layer module and a mobility-aware transport layer module. The changes are only made to the endpoints and preserve the end-to-end semantics of TCP. Different from most exiting works, which utilize either transport or network layer alone without much consideration on inter-layer collaboration, our approach uses MIPv6-related information to perform reactive TCP operations. Through performance simulations, our approach demonstrates that it can significantly improve TCP transport performance in MIPv6-based mobile computing environments, which outperforms prior approaches.