Mobility support for MLE collaborative design system

초록

MLE (Multiple Level Encryption) collaborative design system builds a design object tree and encrypts each node with different keys. It provides the keys of a set of nodes only to the designer who has the right access permission to these nodes. Therefore with this system the designers can collaborate safely with other designers without exposing his or her design secret. In this paper, we propose to enhance MLE collaborative design system with mobility support. Mobility support means to enhance the MLE system such that the designers now can move his or her location freely while participating in the collaborative design process without being disconnected even if the IP address keeps changing. Providing mobility to internet-connected devices has been researched by numerous researchers and a number of techniques have been proposed: e.g. mobile IP, SIP (Session Initiation Protocol), multi-homed IP, etc. These techniques, however, require extensive construction of middleware to provide smooth handover of IP sessions and are not deployed in general public domain yet. In this paper, we propose a simple but effective technique that can provide mobility to the MLE collaborative design system. Our technique inserts agents in the clients and modifies the server instead of overloading the system with heavy middleware system. These agents monitor the changes in IP addresses and act properly to handle the handoff process without further intervention from the designers. © International Research Publication House.

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