Sung Jo Kim

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Mobile cloud-based video streaming services cannot be provided seamlessly when network traffic increases sharply in congested areas such as colleges, universities, and downtown at specific times. This paper proposes a configuration scheme for connectivity-aware P2P networks which can reduce network traffic of cloud-based streaming servers through sharing of(More)
Since the typical erase cycle limit of a NAND flash memory's block is about 1,000,000, flash memory should be erased as evenly as possible; otherwise, file system hot spots will soon be worn out. This forces a NAND flash memory file system to scan the whole flash memory during its mount rather than saving frequently updated file system information in a(More)
Along with the arrival of the Internet of Things, effective network traffic control schemes are in a great need, since network traffic becomes overloaded due to the introduction of a variety of services utilizing multimedia contents. In this paper, we propose the Trust value-based Local Mobile P2P (TLoMP) scheme, which is suitable for mobile P2P contents(More)
SUMMARY The need for global-scale cyber physical system (CPS) is increasing with the evolution of CPS research. A global-scale CPS requires additional considerations beyond the well-known CPS requirements, such as security, reliability, and timely delivery, which cannot be easily satisfied when a CPS becomes global scale. Building an entire dedicated(More)
The existing NAND flash memory file systems have not taken into account multiple NAND flash memories for large-capacity storage. In addition, since large-capacity NAND flash memory is much more expensive than the same capacity hard disk drive, it is cost wise infeasible to build large-capacity flash drives. To resolve these problems, this paper suggests a(More)