An Efficient Fault Tolerance Protocol with Backup Foreign Agents in a Hierarchical Local Registration Mobile IP

Abstract

A Mobile IP allows IP hosts to move between different networks without changing their IP addresses. Mobile IP systems supporting local registration were introduced to reduce the number of times a home registration with the remotely located home agent was needed. The local registration Mobile IP scheme enhanced performance by processing registration requests of mobile nodes at a local agent. The local registration approach may affect other aspects of the Mobile IP systems such as fault tolerance. In this paper, we briefly review previous solutions for supporting fault tolerance in local registration Mobile IP systems and propose a fault tolerance protocol with a backup foreign agent in a hierarchical local registration mobile IP to enhance the efficiency of such systems against foreign agent failures. We also describe the specification of the proposed protocol using LOTOS and perform its validation using MiniLite. Finally, we analyze the performance of our proposed fault tolerance protocol through simulation.

A wireless access network based on WDM-PON for HMIPv6 mobility support

“…The procedure of data transmission in conventional IP-based mobility management schemes, such as MIPv6, HMIPv6 and FMIPv6, is discussed in many publications such as [6][7][8][9][10][11][12][13]. When a CN sends packets with a MN's home-ofaddress (HoA), the home agent (HA) in the MN's home network intercepts and forwards them to the MN's CoA with IP-in-IP tunneling.…”

“…After intensive and broad research efforts, some fast handoff protocols have been reported, such as the hierarchical mobile IPv6 (HMIPv6) [7] and the fast handover for mobile IPv6 (FMIPv6) [8]. The HMIPv6 protocol is designed to minimize handoff latency and the amount of signaling to the home agent (HA) and correspondent node (CN) by allowing the MN to locally register in a mobile anchor point (MAP) domain [7,[10][11][12][13]. Another fast handover scheme is the FMIPv6 which allows the use of layer 2 triggers, based on the handoff anticipation, to decrease the handoff latency and packet losses by introducing a tunnel between the previous care-of-address (PCoA) and the new care-of-address (NCoA) [8,14,15].…”

“…Much research on seamless IP mobility has been carried out for developing handoff protocols based on an IP layer [5], such as mobile IPv6 (MIPv6) [6], hierarchical mobile IPv6 (HMIPv6) in [7], fast handover for mobile IPv6 (FMIPv6) in [8], and so on [5][6][7][8][9][10][11][12][13]. The Internet Engineering Task Force (IETF) has proposed the Mobile IPv6 (MIPv6) as the basic mobility management protocol for IPv6-based wireless/mobile networks [5,6,9].…”

Tolerância à Falha dos Agentes de Mobilidade do Protocolo Mobile IP

“…As propostas de tolerânciaà falha dos Agentes de Mobilidade que empregam redundância de hardware [3], [4] apresentam um desempenho melhor quando comparadas com aquelas em que membros de redundância são dinamicamente alocados no caso de falhas. Istoé verdadeiro quando a carga de tráfego gerenciada por esse hardware redundante não ultrapassa a sua capacidade.…”

An Efficient Paging Strategy Based on Paging Agents of Base Stations in Cellular Mobile Networks

“…In mobile communication systems, the exchange of information with mobile terminals should be facilitated regardless of their locations [1], [2]. To meet this requirement, the network should have well-defined functions to manage the location information and to page the target mobiles in an efficient way.…”