• The Journal of the Korea Contents Association
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• v.7 no.1
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• pp.103-115
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• 2007

The vulnerability issue on IEEE 802.1x wireless LAN has been permits the malicious attack such as Auth/Deauth flooding more serious rather than we expected. Attacker can generate huge volume of malicious traffic as the same methods on existing wired network. The objective of wireless IP Traceback is to determine the real attack sources, as well as the full path taken by the wireless attack packets. Existing IP Traceback methods can be categorized as proactive or reactive tracing. But, these existing schemes did not provide enhanced performance against DoS attack on wireless traffic. In this paper, we propose a 'TTL based advanced Packet Marking' mechanism for wireless IP Packet Traceback with wireless Classification function. Proposed mechanism can detect and control DoS traffic on AP and can generate marked packet for reconstructing on the real path from the non-spoofed wireless attack source, by which we can construct secure wireless network based on AP with enhance traceback performance.

• The Journal of the Korea Contents Association
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• v.19 no.4
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• pp.432-445
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• 2019

Since industry and technology are being developed through interactions, intellectual property (IP), which are used as a substitute for technology, are found to have a close relationship with industry. The current status of IP and the business revenue differences of enterprises of south Korea are analyzed in the disaster-safety industry. Only 2.66% out of 49,538 firms have IP, indicating that most companies do not have IP. The difference in sales due to the ownership of IP is not statistically significant in middle-standing enterprises, but that of medium and small-sized enterprises (SMEs) is statistically significant. It is also found that 17 Divisions, which have IP, out of 21 Divisions in the Disaster-Safety Industry Special Classification of Korea have higher business revenue, and 10 Divisions of those 17 Divisions indicate statistical significance. In conclusion, the ownership of IP is one of the factors affecting the difference in business revenue for SMEs in Korea, implying that it is important to focus on creating and securing IP.

• Journal of Internet Computing and Services
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• v.18 no.2
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• pp.13-20
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• 2017

Recently, researches to adopt Content-centric network (CCN), which is one of the promising technologies for replacing TCP/IP-based networks, to wireless networks has actively performed. However, because of erroneous and unreliable channel characteristics, there are many problems to be resolved to adopt CCN to wireless networks. This paper proposes a method to reduce content download time because nodes possess only parts of content chunks. The proposed method enables a node having parts of content chunks to request the rest of parts of content chunks to a provider before a Consumer requests the content. As a consequence, the content download time is reduced.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.11a
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• pp.199-202
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• 2012

인터넷 네트워크의 발달로 3D 콘텐츠와 같은 대용량의 미디어 파일을 인터넷 프로토콜을 이용하여 전송 가능해 졌다. 또한 사용자는 스마트 폰, 스마트 TV, tablet-PC 등과 같은 다양한 디바이스를 통해 인터넷 접근이 가능한 여러 장소에서 원하는 콘텐츠를 전달받아 소비하는 형태가 널리 퍼지고 있다. 이에 따라 안정적인 인터넷 네트워크 환경의 필요성과 IP기반 스트리밍 서비스와 같은 기술의 중요성이 부각되고 있는 실정이다. 하지만 유동적인 인터넷 환경에서는 스트리밍 서비스의 QoS(Quality of Service)를 보장하기 힘들고, 3D 입체영상과 같은 고화질, 고용량의 미디어 파일을 대상으로 할 경우 사용자에게 끊김없는 스트리밍 서비스를 제공하기 어렵다. 이러한 문제를 해결하기 위해서, 인터넷 네트워크 환경을 고려하여 사용자들이 원하는 콘텐츠를 고품질 혹은 저 품질로 제공 할 수 있는 적응적 스트리밍 서비스에 관한 기술 개발이 등장하게 되었고, 현재 국제 표준화 기구인 MPEG(Moving Picture experts Group)에서 DASH(Dynamic Adaptive Streaming over HTTP)라는 이름으로 표준화가 진행 중에 있다. 이에 본 논문에서는 DASH를 이용한 3D 콘텐츠의 적응적 스트리밍 서비스를 위하여 스테레오스코픽 영상의 세그먼트 파일규격 구성방안에 대해서 제안한다. DASH를 이용한 3D 스트리밍 서비스는 사용자들에게 IP 망을 통해 다양한 품질의 3D 콘텐츠를 제공할 수 있으며, 또한 하나의 3D 콘텐츠로 다양한 디바이스에 적용 가능하다는 이점이 있다.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.37-43
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• 2023

This study concluded that smart glass can combine realistic media and reasonable technologies to compensate for the disappointment of simple one-dimensional board game contents, suggest various games to board game contents that were only possible through advertisements and promotions, and can promote board games, tourism services, and insufficient tourism contents. Content development is highly complete as an educational content in that it can be omitted or repeated by customers, and it is expected to be a board game using interesting smart glasses for the MZ generation.

• Digital Contents
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• no.8 s.111
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• pp.128-131
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• 2002

• Digital Contents
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• no.7 s.62
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• pp.64-65
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• 1998

• Digital Contents
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• no.10 s.113
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• pp.82-87
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• 2002

• Digital Contents
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• no.9 s.76
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• pp.81-81
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• 1999

• Review of Korea Contents Association
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• v.15 no.4
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• pp.22-27
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• 2017