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Moby Dick Consolidated System Integration Plan

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D0103v1.doc Version 1 6.7.2003<br />

Mobile<br />

Node<br />

STARTFAST_HANDOVER<br />

message from MTNM<br />

Old Access<br />

Router<br />

Router solicitation Proxy<br />

Proxy Router Advertisement<br />

create new CoA<br />

Handover Initate<br />

New Access<br />

Router<br />

ICMP message<br />

get the new CoA<br />

Fast Binding Update<br />

Handover Acknowledgement<br />

check new CoA<br />

Fast Binding Acknowledgement<br />

Fast Binding Acknowledgement<br />

Diconnect<br />

Connect<br />

Fast Neighbour advertisement<br />

disconnected time<br />

Figure 18: FHO exchange of messages<br />

4.1.2.6 Paging module<br />

IP Paging module<br />

Common ID<br />

handler<br />

IP Paging<br />

engine<br />

MT dormant<br />

state manager<br />

MTNM<br />

Dormant state<br />

watchdog<br />

Signaling<br />

state machine<br />

Enhanced IPv6 proto<br />

MIPv6<br />

IPv6<br />

Figure 19: Paging module<br />

4.1.2.6.1 Dormant state watchdog<br />

The dormant state watchdog block is responsible for taking the decision on when to enter the dormant<br />

mode. Basically, entering a dormant mode depends on the following parameters:<br />

• No session should be open.<br />

• No session should have been opened for some configurable amount of time.<br />

• All Binding Cache entries, maintained in remote Correspondent Nodes, should have been<br />

expired.<br />

To check the Binding Cache entries and respective timers indicating the individual entry’s validity, this<br />

block needs to communicate to the MIPv6 related binding cache block of the enhanced IPv6 protocol<br />

stack, which might be implemented as an option. Expiration of local binding cache entries can be a basic<br />

measure that no communication is active, hence, the binding of the mobile’s CoA hasn’t been updated on<br />

D0103v1.doc 35 / 168

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