Design and investigation of scalable multicast recursive protocols for wired and wireless ad hoc networks

Figure 5.11 shows the delay time for the packets to be received by the receivers when the
group size increases. The results shows that SARM performs less delay time to perform
the packet delivery and this delay time increases slightly when the group size increases.
Whereas, in E2M and DDM one can notice that the values increases in high values when
the group size increases. SARM performs better in this evaluation because SARM has the
load distribution feature which will cause faster flow of packets. In E2M the delay comes
from the traffic waiting in the queues in the XFs. DDM delay comes from the high
processing time required in the intermediate nodes.

End to End Delay

SARM

-D- DDM

—⅛-E2M

Figure 5.11 End to end delay as a function of group size

5.8 Conclusions

This chapter proposed a new ad hoc protocol; the proposed protocol supports the mobility
in multicast ad hoc networks. This protocol improves the scalability by performing
joining and leaving of nodes to be locally and by making the header in the data packets
with fixed size. The proposed protocol also introduced an efficient solution for link
failure in BNRs because of node mobility.

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