Handover mechanisms in next generation heterogeneous wireless ...

More documents

Recommendations

Info

DYNAMIC NEIGHBOUR TRUST INFORMATION RETRIEVAL FOR GLOBAL ROAMING NTC exchanges that have been performed between the adjacent networks. As proved earlier, a group of mobile users are required to participate in the NTC distribution to obtain complete network trust pattern. For practical implementation, it is assumed that a NTC EFR of 95% is a good indicator that the network trust pattern in a region has been effectively formed. In this simulation, the size of rings as shown in Figure 4.7 was varied to get a comparative result. The experimental results show that the minimum number of mobile users required for establishing network trust pattern for the region in size: 4, 8, 12 (rings) is 132, 169 and 196 respectively. Figure 4.11 shows that the NTC EFR tends to stabilise at a certain value no matter how long the observation on the NTC exchange has lasted. The stabilisation of the NTC EFR under a fixed number of mobile users can be explained by the rationale behinds Figure 4.9 and Figure 4.10 that the contribution of single mobile user to the NTC distribution is very limited. By comparing the NTC EFRs under the different numbers (2, 5, 10) of mobile users, it is found that an effective way of increasing the NTC EFR is to get more mobile users participate in the NTC distribution. More mobile users are involved, higher the NTC EFR is. Figure 4.11 NTC exchange finish ratio vs. time [Size of rings=6, MCRT=30mins] - 74 -
DYNAMIC NEIGHBOUR TRUST INFORMATION RETRIEVAL FOR GLOBAL ROAMING The simulation moves on to further the evaluation of the exact number of mobile users required for establishing complete network trust pattern. As aforementioned, a NTC EFR of 95% is assumed to be sufficient to have the NTC data exchanged between most of the neighbouring networks. The simulation results show that the minimum number of mobile users needed for the region in size: 4, 8, 12 (rings) is 132, 169 and 196 respectively. This proves that a complete network trust pattern in a region can be established using the proposed NTC distribution process. In a small region with 4 rings of cells, no less than 132 mobile users are required according to the assumed mobility pattern. The size of rings has an impact on the number of mobile users required for the NTC distribution. Generally, larger is a region, more mobile users the NTC distribution demands. The model of Figure 4.7 indicates that larger a region is, more independent networks are included. Figure 4.12 Number of mobile users vs. NTC exchange finish ratio Figure 4.12 demonstrates the formation of network trust pattern at the macro level. For the benefits of real deployment, the issue was studied at the micro level. This is done by examining the number of mobile users required per network/cell. In the experiment, the - 75 -
Page 1 and 2:
Handover Mechanisms in Next Generat
Page 3 and 4:
ACKNOWLEDGMENT First of all, I woul
Page 5 and 6:
TABLE OF CONTENTS 4.4.2 Power Save
Page 7 and 8:
LIST OF FIGURES LIST OF FIGURES Fig
Page 9 and 10:
LIST OF FIGURES Figure 7.2 A generi
Page 11 and 12:
ABSTRACT New access technologies su
Page 13 and 14:
Chapter 1 INTRODUCTION New access t
Page 15 and 16:
INTRODUCTION becomes available. Han
Page 17 and 18:
INTRODUCTION The above multipliciti
Page 19 and 20:
INTRODUCTION network trust pattern
Page 21 and 22:
INTRODUCTION 1.3 Related Publicatio
Page 23 and 24:
INTRODUCTION TECHNICAL REPORTS XIII
Page 25 and 26:
HANDOVER MANAGEMENT horizontally. H
Page 27 and 28:
HANDOVER MANAGEMENT The objective o
Page 29 and 30:
HANDOVER MANAGEMENT air interface,
Page 31 and 32:
HANDOVER MANAGEMENT proposed archit
Page 33 and 34:
HANDOVER MANAGEMENT Access point (A
Page 35 and 36: HANDOVER MANAGEMENT users. Moreover
Page 37 and 38: HANDOVER MANAGEMENT For IEEE 802.11
Page 39 and 40: HANDOVER MANAGEMENT The two schemes
Page 41 and 42: HANDOVER MANAGEMENT When a MH is mo
Page 43 and 44: 3.1 Introduction Chapter 3 HANDOVER
Page 45 and 46: SECURITY FOR HANDOVER ACROSS HETERO
Page 69 and 70: DYNAMIC NEIGHBOUR TRUST INFORMATION
Page 85: DYNAMIC NEIGHBOUR TRUST INFORMATION
Page 93 and 94: Chapter 5 TRUST ASSISTED HANDOVER A
Page 95 and 96: TRUST ASSISTED HANDOVER ALGORITHM F
Page 123 and 124: Chapter 6 PROXY BASED AUTHENTICATIO
Page 125 and 126: PROXY BASED AUTHENTICATION LOCALISA
Page 137 and 138:
PROXY BASED AUTHENTICATION LOCALISA
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
MULTI-INTERFACE MOBILE MODEL FOR ME
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
CONCLUSIONS AND FUTURE RESEARCH WOR
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
ABBREVIATIONS 3G 3rd Generation Wir
Page 177 and 178:
ABBREVIATIONS LS Location Server MH
Page 179 and 180:
ABBREVIATIONS THOA Trust Assisted H
Page 181 and 182:
REFERENCES [12] C. Politis, T. Oda,
Page 183 and 184:
REFERENCES [37] Wi-Fi Alliance, "Wi
Page 185 and 186:
REFERENCES presented at IEEE Intern
Page 187 and 188:
REFERENCES [90] R. Verdone and A. Z
Page 189:
REFERENCES [116] K. E. Malki and H.
show all

Handover mechanisms in next generation heterogeneous wireless ...

Create successful ePaper yourself

Delete template?

Save as template?