(IJCSIS) International Journal of Computer Science and Information Security, Vol. 9, No. 1, January 2011
Figure 12. Destination time Vs Signal Strength
Figure 12 shows the graph for Destination time Vs Signal strength. When the mobile node moves to base station the destination time decreasing, simultaneously the signal strength of the mobile node increases. TABLE VIII.
COMPARISON OF DELAY IN DIFFERENT PROTOCOLS
Figure 11. Hybrid DMP
The HDMP (Hybrid Decision Making Protocol) is a mixing of IADMP and BBSSP. The HDMP is compared with Double Threshold Protocol (DTP) and BBSSP. The simulation works are performed with different speed of mobile node and the results are tabulated in table VI. TABLE VI.
The table VIII shows the comparison of different protocols, in this table delay refers to the time taken to send signal from Mobile node to MSC through BSC, as well as acknowledgement signal is sent back from Mobile node to correspondent BSC to remove old information. The Double Threshold Protocol has two threshold points to alert the handoff initiation. In this protocol the delay is high as shown in the table VIII. The Better Base Station Selection Protocol (BBSSP) selects the better base station for handoff using RSS (Relative Signal Strength) and ASS (Absolute Signal Strength). Hence the IADMP (Intelligent Agent Decision Making Protocol) takes less delay than BBSSP when handoff occurs. The HDMP (Hybrid Decision Making Protocol) is the combination of BBSSP and IADMP. The HDMP makes less delay than other protocols.
MEASUREMENT ANALYSIS OF MOBILE NODE
Table VII shows the measurement analysis of Handoff. The handoff initiation takes place before Mobile node reaches the destination. TABLE VII.
MEASUREMENT ANALYSIS OF HANDOFF
Figure 13. Graphs for Comparison of Handoff Protocols
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