title page
Contents
Terminology 10
Abstract 13
1. Introduction 16
1.1. Motivation 16
1.2. Research objective 18
1.3. Contributions 19
1.4. Organization 19
2. Next generation network environments 21
2.1. Heterogeneous overlay wireless access networks 21
2.2. Mobile terminals with multi-radio interfaces 23
2.3. Mobility management in next generation network environments 25
3. End-to-end mobility management(MM) based on SCTP 27
3.1. Background and motivation 27
3.1.1. A briefly overview of SCTP 27
3.1.2. Features of SCTP 31
3.1.3. Motivation 33
3.2.Handover management utilizing link signal strength information 35
3.3. Location management utilizing SIP 44
3.4. Performance evaluation 53
3.4.1. Analysis of the fast error recovery algorithrn 53
3.4.2. Avaluation results of the handover management 61
3.4.3. Evaluation results of the location management 69
4. Cross-layer based service-specific MM platform 74
4.1. Problem statement 74
4.2. Architecture of the proposed platform 77
4.3. Service-specific handover decision mechanism 85
4.3.1. Problem statement 85
4.3.2. Handover decision triggering mechanism 86
4.3.3. Proposed handover decision mechanism 89
4.4. Performance evaluation 97
5. conclusion and future work 104
5.1. Conclusion 104
5.2. Future work 105
References 107
국문요약 113
Papers
Table 2.1. Diversity in existing and wireless technologies 23
Table 3.1. The value of the TSS in the address table 39
Table 3.2. Address table in AMM 40
Table 4.1. Normalization function for each service class 93
Table 4.2. Average jitter of VoIP service for handover decision mechanism 99
Table 4.3. The number of handovers for each service 100
Table 4.4. Average jitter of VoIP service for handover triggering mechanism 103
Table 4.5. Triggering overhead for handover decision triggering mechanism 103
Figure 2.1. Heterogeneous overlay wireless access networks 22
Figure 3.1. Signaling between AMM and mSCTP, IP address acquisition module and link layer 39
Figure 3.2. Comparison of the operation of the existing approach with that of the proposed approach in case of SIP proxy server 47
Figure 3.3. Processing procedure of the proposed SIP messages at the RT 49
Figure 3.4. Processing procedure of the proposed SIP messages at the SIP server 50
Figure 3.5. FIND RQM 52
Figure 3.6. 202 Accepted RPM 52
Figure 3.7. Address RQM 52
Figure 3.8. The error recovery procedures by the original SCTP fer handovers 58
Figure 3.9. The error recovery procedures by the proposed scheme for handovers 60
Figure 3.10. A network model used in the simulation 62
Figure 3.11. Handover latency for different moving speed of MT 64
Figure 3.12. File transfer time for different moving speed of MT 64
Figure 3.13. Handover latency for different PAT 66
Figure 3.14. File transfer time for different PAT 66
Figure 3.15. Handover latency far different internet delay 68
Figure 3.16. File transfer time for different internet delay 68
Figure 3.17. A topology of the simulation network 69
Figure 3.18. AAD versus the number of intermediate routers with SIP mobility 73
Figure 3.19. AAD versus the number of intermediate routers without SIP mobility 73
Figure 4.1. The proposed platform 77
Figure 4.2. Functional modules and interactions of DE 80
Figure 4.3. Functional modules and interactions of IP agent 84
Figure 4.4. The proposed handover decision triggering mechanism 88
Figure 4.5. The operation of I-class SDE 94
Figure 4.6. The operation of II-class SDE 95
Figure 4.7. The operation of III-class SDE 96
Figure 4.8. Simulation network model 97
Figure 4.9. FTP goodput for handover decision mechanism 99
Figure 4.10. FTP goodput for handover decision triggering mechanism 102