The study provides quantitative results of the performance improvements obtained by new enhancements as observed by a single mobile user with respect to handoff latency, throughput, packet delivery ratio, average jitter etc. In addition to this, the signaling load costs associated with the performance improvements provided by the enhancements has been analyzed. The handover delay reduction approaches, specifically the Fast Handover Mobile Ipv6 FHMIPv6 have been shown. The thesis concludes with the analysis of simulation results, evaluating the MIPv6, HMIPv6 and FHMIPv6 performance and finally gives some suggestions for the future work.
Mobile Internet Protocol (MIP), the current International Engineering Task Force (IETF) proposal for IP mobility support, represents a key element for future all-Internet Protocol (IP) wireless networks to provide service continuity while on the move within a multi-access environment. A performance evaluation of Mobile internet protocol version 6 (IPv6) and its proposed enhancements, that is Fast Handovers for Mobile IPv6, Hierarchical Mobile IPv6 was conducted. And a combination of fast handover (FMIPv6) and hierarchical mobile IPv6 (HMIPv6) was proposed and simulated by using the network simulator NS-2. The simulation scenario comprised two access routers and one mobile node that communicated in accordance with the IEEE 802.11 wireless LAN standards.
Table of Contents
CHAPTER 1: INTRODUCTION
1.1 Research Motivation
1.2 Local and Global Mobility
1.3 Host Based Mobility
1.4 Mobile IPv6
1.5 Hierarchical Structures and Protocols
1.6 Hierarchical Mobile IPv6
1.7 FHMIPv6
1.8 Research Objectives
1.9 Thesis Outlines
CHAPTER 2: MOBILE IP PROTOCOL (MIP)
2.1 Internet Protocol (IP) Overview
2.2 IPv4 Addressing and Sub-Netting
2.2.1 Hardware Addressing
2.2.2 Logical Addressing
2.3 Internet Protocol (IP)
2.3.1 IPv4 Addressing
2.3.2 IPv6 Addressing
2.4 Mobile IP Version 4 (MIPv4)
2.5 Mobile IP Version 6 (MIPv6)
2.6 Wireless Local Area Network (WLAN)
CHAPTER 3: LITERATURE SURVEY
3.1 Problem Statement
CHAPTER 4: HANDOVER DELAY
4.1 Handover Delay Reasons
4.1.1 Standard MIPv6 Handover Delay
4.1.2 HMIPv6 Handover Delay
4.1.3 FMIPv6 Handover Delay
4.1.4 FHMIPv6 Handover Delay
CHAPTER 5: THE SIMULATION
5.1 Simulation Goals
5.2 Simulation Model
5.3 Mobile IP Extension
5.3.1 Delay Reduction Extension to NS2
5.4 Simulation Scenario
CHAPTER 6: THE RESULTS
6.1 Results at Varying Speed of MN
6.2 Results Obtained By Increasing the Simulation Time
6.3 Result Analysis
CHAPTER 7: CONCLUSION AND FUTURE WORK
7.1 Conclusion
7.2 Future Work
Research Objectives and Focus
The primary objective of this thesis is to study and evaluate mobility management schemes for next-generation networks, with a specific focus on reducing handover delay and optimizing network performance parameters in Mobile IPv6 environments.
- Analysis of existing Mobile IP approaches (MIPv6, HMIPv6, FHMIPv6).
- Implementation and simulation of mobility protocols using Network Simulator 2 (NS-2).
- Quantitative assessment of performance metrics including packet delivery ratio, throughput, and handover latency.
- Comparative evaluation of FHMIPv6 against standard MIPv6 and HMIPv6 benchmarks.
Auszug aus dem Buch
1.7 FHMIPv6
During the process of handover, there is a time period during which the MN is unable to send or receive any packets. FHMIPv6 is the combination of FMIPv6 and HMIPv6 which was designed to add up the advantages of both and provide additional improvements. It is based on the idea that the MN is aware of the IPv6 subnet it is going to move to before the actual movement takes place. The access router in the foreign network can buffer all the packets destined for the MN that arrive till it actually gets connected after handover.
A MN in its home network has address PCoA (Previous CoA) and is connected to the access router known as the Previous Access Router (PAR). When it moves to the new network, it connects with the New Access Router (NAR) and acquires the New CoA (NCoA). Fast handover consists of three steps: Handover initiation, tunnel establishment and packet forwarding [10][11][12]. FMIPv6 uses Router Solicitation for Proxy Advertisement (RtSolPr) and Proxy Router Advertisement (PrRtAdv) for fast handover. A MN is in its home network can ask its access router for the subnet information of all the access routers that it can detect. Handover is initiated when a MN sends an RtSolPr message to the PAR to indicate that it wants to perform a fast handover to a NAR. This message consists of the link layer address of the new point of attachment that is discovered from the NAR’s beacon message. The PAR replies with a PrRtAdv that provides the MN information about the neighboring links and both of these messages together help in expedited movement detection.
Summary of Chapters
CHAPTER 1: INTRODUCTION: Introduces the growing need for mobile communication and sets the research focus on reducing handover delay in 4G and IPv6-based heterogeneous networks.
CHAPTER 2: MOBILE IP PROTOCOL (MIP): Provides a foundational overview of the Internet Protocol, addressing schemes in IPv4 and IPv6, and the operational architecture of Mobile IP versions.
CHAPTER 3: LITERATURE SURVEY: Reviews existing research and performance studies concerning handoff mechanisms and optimization schemes for Mobile IPv6.
CHAPTER 4: HANDOVER DELAY: Explains the technical causes of handover latency and derives delay equations for MIPv6, HMIPv6, FMIPv6, and FHMIPv6.
CHAPTER 5: THE SIMULATION: Details the simulation environment, modeling of mobile nodes, and the integration of delay reduction extensions into the NS-2 simulator.
CHAPTER 6: THE RESULTS: Presents quantitative simulation data comparing the performance of MIPv6, HMIPv6, and FHMIPv6 under varying movement speeds and simulation durations.
CHAPTER 7: CONCLUSION AND FUTURE WORK: Summarizes the thesis findings regarding FHMIPv6 performance improvements and suggests directions for future research in random mobility patterns.
Keywords
Mobile IPv6, MIPv6, HMIPv6, FHMIPv6, Handover Delay, Network Simulator 2, Throughput, Packet Delivery Ratio, Latency, Mobility Management, 4G Networks, Wireless LAN, Signaling Load, Packet Loss, Routing Optimization
Frequently Asked Questions
What is the core focus of this thesis?
The research focuses on analyzing and optimizing mobility management schemes in next-generation IPv6 networks to minimize handover delay and improve overall network performance for mobile users.
What are the primary protocols compared in this study?
The study compares the standard Mobile IPv6 (MIPv6) with its hierarchical extension (HMIPv6) and the combined Fast Hierarchical Mobile IPv6 (FHMIPv6) scheme.
What is the main goal or research question?
The main goal is to evaluate how FHMIPv6 can effectively reduce handover latency and improve performance metrics like throughput and packet delivery ratio compared to previous standards.
Which methodology is employed for this research?
The author uses a quantitative approach by implementing these mobility protocols within the Network Simulator 2 (NS-2) environment to run simulations and analyze performance data.
What specific topics are discussed in the main chapters?
The chapters cover the evolution of mobile IP protocols, a thorough literature survey, mathematical derivations for handover delays, simulation design and execution, and detailed comparative results analysis.
Which keywords best characterize this work?
The work is defined by terms such as FHMIPv6, handover latency, packet delivery ratio, mobile IPv6, simulation, network performance, and signaling load reduction.
How does FHMIPv6 improve handover performance?
FHMIPv6 combines the hierarchical domain structure of HMIPv6 with the fast handover mechanisms of FMIPv6, allowing the mobile node to pre-configure its new address and buffer packets before completing the handover.
What conclusion does the author reach regarding FHMIPv6?
The author concludes that FHMIPv6 shows superior performance in reducing total handover delay and packet loss compared to standard MIPv6 and HMIPv6, although further optimization is still required for seamless real-time applications.
- Quote paper
- Riaz Khan (Author), 2012, Mobility Supporting Schemes over IPv6 Networks, Munich, GRIN Verlag, https://www.grin.com/document/376247
