Personal Wireless Communications

The size of the internet will increase with the mainstream adoption of the broadband mobility connecting a myriad of devices and sensors at homes and businesses and the use of IPv6. All this will add to the spatio-temporal complexity of the network topology and dynamics. We present a brief overview of the role that self-organization can play in this new era of complexity. Issues of QoS, scalability, robustness, and reachability, among others (e.g., heterogeneity) will dominate the research in the future. First, we present the definition, scope, and applicability of self-organization. Then we briefly articulate the need for selforganization, and some recent breakthrough advances in this emerging area of research. This is followed by some nearand long-term scenarios where self-organization can be applied, and some results that we have obtained. We conclude the talk with a discussion on the key challenges that lie ahead. I. Niemegeers and S. Heemstra de Groot (Eds.): PWC 2004, LNCS 3260, p. 1, 2004. c © IFIP International Federation for Information Processing 2004 The Impacts of Signaling Time on the Performance of Fast Handovers for MIPv6 Seung-Hee Hwang1, Youn-Hee Han2, Jung-Hoon Han1, and Chong-Sun Hwang1 1 Dept. of Computer Science and Engineering, Korea University, Seoul, Korea, {shhwang,frajung,hwang}@disys.korea.ac.kr 2 i-Networking Lab., Samsung Advanced Institute of Technology, Yongin, Kyungki-do, Korea, yh21.han@samsung.com Abstract. A Fast Handover protocol (FMIPv6) in IETF working group is proposed to reduce the handover latency in Mobile IPv6 standard protocol. The FMIPv6 proposes some procedures for fast movement detection and fast binding update to minimize the handover latency. Additionally, to reduce the lost packets caused by a handover, this protocol introduces buffers in access routers. However, the handover latency or the amount of lost packets are affected by the time to send signals such as Fast Binding Update message for the fast handover. In this paper, we inspect the impacts of the signaling time on packet loss and handover latency in FMIPv6 through the numerical analysis, we propose the optimal signaling time to improve the performance of FMIPv6 in terms of the handover latency and lost packets. A Fast Handover protocol (FMIPv6) in IETF working group is proposed to reduce the handover latency in Mobile IPv6 standard protocol. The FMIPv6 proposes some procedures for fast movement detection and fast binding update to minimize the handover latency. Additionally, to reduce the lost packets caused by a handover, this protocol introduces buffers in access routers. However, the handover latency or the amount of lost packets are affected by the time to send signals such as Fast Binding Update message for the fast handover. In this paper, we inspect the impacts of the signaling time on packet loss and handover latency in FMIPv6 through the numerical analysis, we propose the optimal signaling time to improve the performance of FMIPv6 in terms of the handover latency and lost packets.