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As the growing in Internet, database types and sizes are getting various and larger. The topic of finding out the significant information from a database at the shortest time is important. In the music databases, a repeating pattern is an important feature of music objects, which commonly used in analyzing the repeated part of music data and looking for(More)
This paper proposes a fixed clustering algorithm (FCA) to improve energy efficiency for wireless sensor networks (WSNs). In order to reduce the consuming energy of sending data at each sensor, the proposed algorithm uniformly divides the sensing area into clusters where the cluster head is deployed in the center of the cluster area. Simulation results show(More)
Voice over Internet protocol (VoIP) is a prevalent multimedia application nowadays. For mobile nodes (MNs) using VoIP services in wireless networks, the handoff issues need to be taken into account. Stream control transmission protocol (SCTP) is a potential transport layer protocol with multi-homing and multi-streaming functions. Mobile SCTP with dynamic(More)
In wireless sensor networks, energy efficiency is an important research issue. The data transmission times could be decreased effectively to achieve energy efficiency by applying a cluster-based structure. This study proposed a level-based energy efficiency clustering approach. Each cluster replaces its cluster head and re-clusters periodically according to(More)
The tradeoffs in employing multicasting technology for implementing large scale video on demand (VoD) over Internet Protocol Television (IPTV) system, in general, come to the scheduled multicasting streams and limited video or television program selections. The scheduling strategies presented in this paper will provide several advantages. First, we proposed(More)