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Moving sequential pattern mining is important in the trajectory analysis of moving objects and mobility prediction in mobile environment. The traditional sequential pattern mining method-PrefixSpan, is not applicable to the spatial constrained applications and it will produce a large number of duplicated projected databases in mining data sets. In order to overcome these drawbacks, a new algorithm...
Identification of social relationships in social networks, especially cell phone networks, has attracted a lot of attention recently. Mobile phones continue to be one of the main methods of communication. Their voice and SMS logs are accessible in network switches and/or telecommunication centers. However, relationships like friendship have been mined from several features that are hard or impossible...
Aiming at the problem of limited resource and unbalanced load in WSN, the paper proposes a novel role switching management mechanism by importing mobile agent. The sensor nodes can be scattered freely, which adapt actual military situation. We design a mobile agent immigrating randomly and working method among inner-cluster and inter-cluster, meanwhile put forward 'inner-cluster role table' and 'inter-cluster...
In this paper we present a checkpointing and failure recovery algorithm suited to mobile computing systems. A survey of mobile systems and the algorithms that are presently available is made to gather the essential knowledge about how these systems work. This includes study and analysis of existing checkpointing & recovery algorithms to identify their relative advantages & disadvantages. The...
The aim of this article is to present a novel handover algorithm to decrease the handoff latency in all-IP based future heterogeneous mobile communication system (FHMCS). The reduction in handoff latency is achieved by employing mobile network discovery technique which will decrease the delays due to movement detection, new care of address configuration and duplicate address detection (DAD). The decrease...
In ground-based military maneuvers, group formations require flexibility when traversing from one point to the next. For a human-led team of semi-autonomous agents, a certain level of awareness demonstrated by the agents regarding the quality of the formation is preferable. Through the use of a Multi-Robot System (MRS), this work combines leader-follower principles augmented by an assistive formation...
Providing a seamless handoff and quality of service (QoS) guarantees is one of the key issues in real-time services. Several IPv6 mobility management schemes have been proposed and can provide uninterrupted service. However, these schemes either have synchronization issues or introduce signaling overhead and high packet loss rate. This paper presents a scheme that reduces the handoff latency based...
This research is aimed at a smart music playing environment in which a set of speakers are placed in different locations/rooms and one of the speakers will automatically play a music whenever a user gets close to it. Our study is focused on the design and prototype implementation of such a smart music playing system called U-LAMP (User Location-Aware Music Player). It consists of a server that stores...
The question of energy savings has been a matter of concern since a long time in the mobile distributed systems and battery-constrained systems. However, for large-scale non-mobile distributed systems, which nowadays reach impressive sizes, the energy dimension (electrical consumption) just starts to be taken into account. In this paper, we present the GREEN-NET framework which is based on 3 main...
This contribution addresses the case when live packet-switched video is used to enrich circuit-switched speech calls in mobile telephony. Circuit-switched and packet-switched transmissions generally operate on completely different transmission paths resulting in different QoS in terms of delay and loss rates. In this case, video and audio data recorded at the same time are not multiplexed together...
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