TLMM: MIP-based Three Level Mobility Model
- 作者：Mohuya Chakraborty ; Iti Saha Misra ; Debashis Saha ; Amitava Mukherjee
- 关键词：Three Level Mobility Model ; Bi-casting ; Dynamic fast handoff ; Gateway Mobility Agent ; Mobility management
- 刊名：Computer Communications
- 出版年：2007
- 期刊代码：21_01403664
- 类别：cp
- 出版时间：26 March 2007
- 卷：30
- 期：6
- 页码：1244-1257
- 文件大小：478 K
摘要
This article describes a Three Level Mobility Model (TLMM) for next generation wireless IP-based networks. TLMM is modular and straightforward as it leverages existing protocols, such as Mobile IPv4 as global mobility management and TeleMIP for intradomain mobility management for locating roaming nodes. It uses three dynamically autoconfigured care-of-addresses (CoAs) for routing the packets destined to mobile nodes. A Gateway Mobility Agent at the boundary of two domains provides a global CoA and identifies a mobile node’s attachment to the current domain. A regional CoA provides the specific area of the mobile node’s attachment within the domain, while a local CoA changes every time the mobile changes subnets and identifies the mobile’s attachment to the subnet level granularity. A dynamic handoff policy for supporting fast and seamless handoff reduces latency at a mobile node and minimizes packet loss. Simulation results using ns-2 supports our model. A detailed analytical framework for dynamic handoff has been presented in depth to estimate handoff initiation instance for reducing the probability of false handoffs.