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Design and Implement of Ubiquitous System on Chip
Kyoungmin Doo,Youngsam Kim,Samhyun chi,Kangwhan Lee 대한전자공학회 2008 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
Ubiquitous Computing System is available anytime, anywhere communications and computing systems, and information sharing and mutual cooperation between computing systems. Existing computing environment is interactive operation between user and computer. But, The Ubiquitous Computing System required to be aware of physical environment situation oneself. In addition, For Ubiquitous Computing System, it is need the sensor technology to detect information of users and the surrounding environment. But, the user and the surrounding environment input is uncertain and ambiguous information. And Research is not enough awareness about the situation. For these reasons, this paper proposed CRS (Context Recognition Switch) and DOS (Dynamic and Optimal Standard) based Context-awareness system architecture. It included following three main part of architecture. First, it included pre-processor for multi sensor of bio and environment. Second, it included HPSP (High Performance Speed Processor) for real time process. At last, it included Network Topology Processor for Network System as like MANET (Mobile Ad-hoc Network). Finally, this paper show implemented UoC (Ubiquitous System on Chip) base on the IEEE 802.15.4 WPAN (Wireless Personal Area Network) standard.
A Study on the Efficient TICC(Time Interval Clustering Control) Algorithm for MANET
Youngsam Kim,Kyoungmin Doo,Samhyeon Chi,Kangwhan Lee 대한전자공학회 2008 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
A MANET(Mobile Ad-hoc Network) is a multi-hop routing protocol formed by a collection without the intervention of infrastructure. So the MANET also depended on the property as like variable energy, high degree of mobility, location environments of nodes etc. In recently years, the various clustering technique and routing algorithm would have proposed for improving the energy efficiency. One of the popular approach methods, It could make a cluster-based routing algorithm using in MANET. However, the proposed clustering method results remain the problems in high energy consumption on the cluster head node management. To solve the problems, many routing scheme have been presented to provide that Dynamic clustering is a method of resolving such a problem by distributing energy consumption through the re-selected head node [1][5]. But the proposed dynamic clustering has a problem when cluster head node is re-selected for energy consumption. These proposed an algorithm were presented about composition of cluster that was being node clustering algorithm process. However, it could not provide a solution that is also improving energy efficiency and making energy consumption to reduce through reconstruction of cluster. So, in this paper, we propose an algorithm techniques which is TICC (Time Interval Clustering Control) based on energy value in property of each node for solving cluster problem. It provides improving cluster energy efficiency how can being node manage to order each node's energy level. TICC is clustering method. It has shown that Node's energy efficiency and life time are improved in MANET.