Group Key Locking Scheme in Mobile Multicast Environments with Modified MLDs

Authors:
Byung-Jin Han;Jong-Hyouk Lee;Tai-Myoung Chung
Affiliations:
Internet Management Technology Laboratory, Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Korea 440-746;Internet Management Technology Laboratory, Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Korea 440-746;Internet Management Technology Laboratory, Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Korea 440-746
Venue:
APNOMS '08 Proceedings of the 11th Asia-Pacific Symposium on Network Operations and Management: Challenges for Next Generation Network Operations and Service Management
Year:
2008

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Abstract

In general, when the group key management schemes which have been using in normal multicast environment are applied to mobile multicast environment, they have been experienced some problems because of the mobility of the mobile multicast entities --- mobile multicast sender, mobile multicast receiver. We focus on one specific problem. When a mobile multicast sender or receiver moves into a new subnet --- called handoff, too many group membership changes occur concurrently. This overwhelmingly many membership changes cause also a lot of group key update requests. The key distribution center is burdened with those requests and does not work properly. The proposed Group Key Locking scheme solves the problem by preventing group key update requests which are caused by handoff of the mobile multicast entities. The results of performance evaluation show that performance of our proposed scheme is better than traditional group key management scheme as 62.5% for mobility of the mobile multicast sender and 14.4% for mobility of the mobile multicast receiver.