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Radio Frequency Identification (RFID) is considered to be an authentication technology of great potential. Due to the bright future of low-cost RFID tags in practical situations, the authentication towards multiple tags and tag groups has become the research hotspot. However, there are many concerns about the security risks and privacy issues in lightweight RFID authentication scenarios. Many researches...
Body area networks (BANs) have emerged as an enabling technique for e-healthcare systems, which can be used to continuously and remotely monitor patients' health. In BANs, the data of a patient's vital body functions and movements can be collected by small wearable or implantable sensors and sent using short-range wireless communication techniques. Due to the shared wireless medium between the sensors...
Radio Frequency Identification (RFID) is a potential technology with the purpose of replacing the barcodes. The authentication towards multiple tags and tag groups has become the research hotspot considering of practical prospects of low-cost RFID tags. However, there are many concerns about the security risks and privacy issues due to the lightweight authentication property of the RFID tags. Many...
Digital Environment Home Energy Monitoring System (DEHEMS) is a wide scale domestic energy monitoring and managing system that enables real-time and historical energy monitoring and feedback, provides comparison of groups of households with similar characteristics and personalised energy saving tips and alerts. This paper presents the design and development of the DEHEMS system and compares DEHEMS...
It is a challenge that network coding achieve wide use in wireless mesh networks. Network coding must be compatible or friendly with TCP in practice. We propose a mechanism that naturally add network coding to current network systems. In our scheme, the destination feedback the degree of freedom of encoding block, and delays of packet delivery minimize reordering and timeouts. Using multipath routing,...
The lightweight time warp (LTW) protocol offers a novel approach to high-performance optimistic parallel discrete-event simulation, especially when a large number of simultaneous events need to be executed at each virtual time. With LTW, the local simulation space on each node is partitioned into two sub-domains, allowing purely optimistic simulation to be driven by only a few full-fledged logical...
Context maintenance and discovery, which aim to represent, manage and share context information, have been discussed since context-awareness was presented in the 1990s. These become more challenging when being applied to a ubiquitous environment where dynamic and distributed computing happens anytime, anywhere. In this paper, a platform for ubiquitous context representation and its distribution is...
This paper proposes a novel lightweight time warp (LTW) protocol for high-performance parallel optimistic simulation of large-scale DEVS and cell-DEVS models. By exploiting the characteristics of the simulation process, the protocol is able to set free most logical processes (LPs) from the time warp mechanism, while the overall simulation still executes optimistically, driven by only a few full-fledged...
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