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Hierarchical MIPv6 (HMIPv6) is proposed to improve the system performance of mobile IPv6 (MIPv6). However, HMIPv6 cannot outperform MIPv6 in all scenarios because of its double-registration when a user roams across regions and the longer packet delivery latency. Therefore, to select a proper mobility management scheme between MIPv6 and HMIPv6 becomes an interesting issue, for its potentials in enhancing...
Wireless sensor networks are usually densely-deployed, while sparse sensor networks have emerged as a special class of sensor networks in recent studies which created a number of new challenges. Relaying data using mobile elements seems an effective way for data gathering in such networks. In this paper, we propose two grid-based mobile element scheduling (GBMES) schemes that schedule a mobile element...
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