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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
IEMEK Journal of Embedded Systems and Applications
Journal Basic Information
Journal DOI :
Institute of Embedded Engineering of Korea
Editor in Chief :
Volume & Issues
Volume 5, Issue 4 - Dec 2010
Volume 5, Issue 3 - Sep 2010
Volume 5, Issue 2 - Jun 2010
Volume 5, Issue 1 - Mar 2010
Selecting the target year
A High Performance NoC Architecture Using Data Compression
Kim, Hong-Sik ; Kim, Hyunjin ; Hong, Won-Gi ; Kang, Sungho ;
IEMEK Journal of Embedded Systems and Applications, volume 5, issue 1, 2010, Pages 1~6
Development of The DCCP for Data Reliability in IP Traffic System
Park, Hyun-Moon ; Seo, Hae-Moon ; Lee, Gil-Yong ; Park, Soo-Hyun ; Kim, Sung Dong ;
IEMEK Journal of Embedded Systems and Applications, volume 5, issue 1, 2010, Pages 7~17
ITS(Intelligent Transport System) as things are used for Broadcast service using TDMB/TPEG/NAVI rather than personal seamless service. It is attaching weight to Traffic information gathering, Charging, Settlement service. This research is applied to improve DCCP(Datagram Congestion Control Protocol) which has function as protecting data and preserving message boundary. The improving method is like that we solve data trust in UDP because Connection and Transmission overhead in UDP is less than in TCP. We fix the data loss which is generated from unordered delivery section of IP base wireless service by using DCCP protocol. We guarantee of connection with OBE(On-Board Equipment) and reliance about transmission of data by complement to mapping table and multi-hoping. Finally, We evaluate the performance about transmission of IP based data. We constructed a test-bed near research center for this test.
Fast Context Switching Architecture in Embedded Systems
Son, Jeongho ;
IEMEK Journal of Embedded Systems and Applications, volume 5, issue 1, 2010, Pages 18~22
In real-time embedded systems, the responsibility is the most important thing because it is related to human life. Context switching is a part of which can slow down the responsibility. We therefore should minimize the amount of state that needs to be saved during context switching. In this paper, we introduce a new architecture (Register Farm) for context switching which can exchange two contexts in one cycle time. Although it might increase the cost of MCU design and the complexity of circuit, it cannot miss any interrupt during context switching. Consequently, Register Farm architecture can make embedded systems spread out in human life because it can increase reliability and responsibility in real time embedded systems.
Design and Implementation of MOST Network Service over POSIX
Lee, Mu-Youl ; Chung, Sung-Moon ; Jin, Hyun-Wook ;
IEMEK Journal of Embedded Systems and Applications, volume 5, issue 1, 2010, Pages 23~28
The automotive industry tries to provide infotainment systems to emerging automobiles. Since the infotainment systems require various peripheral devices and network connectivity, legacy operating systems such as Linux and Windows can be much preferred due to its plentiful device drivers and multimedia applications while the operating systems following OSEK standard are used for automotive electronic control units. Thus it is highly desired that the system software supporting infotainment applications can be portable over different legacy operating systems providing unified programming interfaces. The majority of legacy operating systems support POSIX interfaces for application development. MOST is an automotive network standard for infotainment systems. Network Service defines the protocol stacks for MOST control data, which is essential to implement infotainment applications over MOST. In this paper, we suggest a POSIX-based Network Service so that we can utilize legacy device drivers and applications for automotive infotainment systems. We measure the performance of the POSIX-based Network Service and show that its overhead is not significant.
Testing Environment based on TTCN-3 for Network-based Embedded Software
Chae, Hochang ; Jin, Xiulin ; Cho, Jeonghun ; Lee, Seonghun ;
IEMEK Journal of Embedded Systems and Applications, volume 5, issue 1, 2010, Pages 29~38
It is highly requested that the more complicated embedded software is used for high performance and multiple functions of the systems. This is inevitably increasing the errors. Therefore the embedded software testing is getting important recently. There are not general testing methods which are able to be applied for any embedded systems, but via this research, we introduce a testing method which is based on TTCN-3, a testing standard, for embedded systems. A testing environment for network-based embedded software is implemented with considering the features of TTCN-3 testing which is based on message exchange. The testing environment has two additional parts with TTCN-3 test system, the network analyzer to access the network-based systems and the communication interface which is suggested for embedded systems in previous work, and we have implemented the whole testing environment with interacting these two parts. In addition to the normal testing domain, called single node testing as a unit testing of V-model, we suggest another concept to test multiple nodes in network. It could be achieved by adding keywords such as supervisor and object which are describing the feature of TTCN-3 testing component and generating the TTCN-3 Executable code which contains new keywords. The testing has done for embedded software which is based on CAN network and the demonstration of the testing environment has been shown in this paper.
Energy-Aware Node Selection Scheme for Code Update Protocol
Lee, Seung-Il ; Hong, Won-Kee ;
IEMEK Journal of Embedded Systems and Applications, volume 5, issue 1, 2010, Pages 39~45
As wireless sensor network are being deployed in a wide variety of application areas, the number of sensor nodes in a sensor filed becomes larger and larger. In the past, ISP (In-System Programming) method have been generally used for code update but the large number of sensor nodes requires a new code update method called network reprogramming. There are many challenging issues for network reprogramming since it can make an impact on the network lifetime. In this paper, a new sender selection scheme for network reprogramming protocol is proposed to decrease energy consumption for code update by minimizing overlapped area between sender nodes and reducing data contention. Simulation results show that the proposed scheme can reduce the amount of message traffic and the overall data transmission time.