• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.968-971
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• 2013

이 논문에서는 FSM(Finite State Machine) 기반 온라인 게임 서버 테스트 자동화 시스템을 제안한다. 게임 서버의 테스트 자동화는 테스트로 인한 비용, 시간적 제약, 테스트 자원의 재사용 측면에서 이득이 있다. 기존의 테스트 자동화 방식은 사용자간의 상호작용을 고려하지 않기 때문에 게임 서버의 성능에 대한 정확한 측정이 어렵다. 또한, 실제 서비스 시에 수용할 수 있는 동시 접속 인원수를 예측하기 어렵다. 이 논문에서 가상 유저를 이용한 테스트를 할 경우 FSM 을 이용하여 가상유저간의 상호작용이 가능하게 한다. 이를 이용하여 게임 서버의 성능 측정의 정확도 개선이 가능하다. 제안 시스템을 검증하기 위해 상호작용을 고려하지 않은 테스트 방법과 비교 평가 하였다.

• The Journal of the Korea Contents Association
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• v.7 no.8
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• pp.76-85
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• 2007

The mobile content which adopts the subject matter of wired online game with interoperability element is in service. This is one of the plans which are the possibility of benefiting wired online game in game industry. In this paper, interoperability method of game content between wired and wireless classifies this with three branches and it tries to analyze the interrelationship of the interoperability element and interoperability types adopted in many wired online games. And, the development of interoperability server is composed of mobile server which takes charge of I/O process of mobile device and game server records all information of users in the game. With developing the content which is suitable in specific game(Ran-Online), this paper presents the development method of game content through interoperability between wired and wireless.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.4
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• pp.1006-1011
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• 2008

In this paper, we developed a system for large scale on-line interactive game server based on Platform as a Service(PaaS). Small and medium sized game developing companies have various aspects of limitation to launch a large scale on line game site. By using the system proposed in this paper, small and medium sized game developing companies can easily publish their games into market.

• Journal of Korea Game Society
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• v.9 no.1
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• pp.75-84
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• 2009

In this paper, we propose a game server using public network library ACE, which has been developed in various fields for a long time. ACE network library has been considered not only in the area of high efficient real-time communication library but also in the area of application development, and it provides various facilities. We logically reorganized the part, which is necessary to develop games, among various functions of ACE and optimized it, and developed real battlenet server using verify the reorganized library. As the method of experiment, the battlenet server and test client were set and interface request test and data electrical transmission test were conducted. As the result of the experiment, the conclusion that it is possible to develop games by using ACE, which is verified network library, has been obtained.

• Journal of Advanced Navigation Technology
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• v.14 no.6
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• pp.882-889
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• 2010

The development of network technology has made rapid growth for online gaming industry on the Internet. Recently, game players have been wanting for a free migration on the game character for game player managed by online game servers of different types. Existing research on the acceptance of the game players demands have suggested migration model of the game character. However, the game Character Migration Process between the game server of different types migration is focused only, and safety issue that is necessary in an online transaction is overlooked. Therefore, ensure the safety of transactions information and when a dispute arises is necessary countermeasures. In this paper, Secure game Character Migration System (SCMP) using dual signature method when migrating game characters between the game servers of different types based on existing research is propose and looks to examine the safety.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.322-324
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• 2003

MMORPG(Massively Multi-player Online Role Playing Games)와 같은 클라이언트-서버 기반의 대규모 온라인 게임은 정보 전송을 위한 많은 메시지들을 정의하여 사용한다. 그러나 게임의 기획이나 내용 및 기타 게임 요소들이 변경되면 개발자들은 메시지를 추가하거나 변경하는 문서를 작성해야 하고 작성된 문서에 근거하여 프로그램의 수정작업을 수행해야 한다. 본 논문에서는 대규모 온라인 게임의 내용확장성으로 인해 지속적으로 반복되는 메시지의 추가 및 변경 작업을 용이하게 해주는 XML 기반의 메시지 정의 시스템을 제안한다. 제안된 시스템은 메시지 정의에 있어서 데이터의 구조 표현과 내용 표현이 동시에 가능한 XML을 이용했으므로 다양한 형식 (format)의 메시지를 정의할 수 있으며, 대규모 온라인 게임뿐만 아니라 클라이언트-서버 기반의 일반 통신 응용 프로그램에도 사용할 수 있다.

• Proceedings of the KAIS Fall Conference
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• 2000.10a
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• pp.354-359
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• 2000

네트워크게임은 오락, 교육, 비즈니스를 포함하며 오늘날 우리의 생활 속에 다양한 관점에서 중요한 역할을 하기 시작하였으며, 최근의 네트워킹기술은 신뢰성 있는 게임을 요구하게 되었다. 네트워크게임은 전송방식 에 따라 피어 투피어방식, 커뮤니케이션 서버 방식, 중앙서버 방식 등 세 가지 방식으로 나눌 수 있는데 네트워크의 신뢰성이 매우 중요한 요인이다. 현재 이러한 문제를 해결하기 위한 노력들이 여러 분야에서 연구가 진행되고 있으며 특히, 네트워크 게임 시스템 운영체제, 네트워크 설계 등의 여러 분야에서 연구되고있다.

• Journal of Korea Game Society
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• v.16 no.4
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• pp.57-68
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• 2016

As the size of the data used in the game application increase gradually, the physical resources of game server grow. Accordingly, it is necessary to/it is required to introduce I/O virtualization in game server to improve I/O performance of the server. But it is difficult to ensure high responsiveness in game server where I/O delay change from time to time. To maximize the benefit of I/O virtualization, guaranteeing I/O response time is very important and it is necessary to have I/O scheduling techniques to manage the I/O latency in the order of priority of virtual machines. In this paper, we propose an efficient delay-constrained scheduling algorithm in a virtualization environment to ensure maximum I/O latency. In addition, a reduced amount of loss of the packet was found to increase the fairness of scheduling in the experiments with the proposed scheme.

• Journal of Korea Game Society
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• v.16 no.1
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• pp.83-92
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• 2016

An online game is a huge distributed system comprised of servers and untrusted clients. In such circumstances, cheaters may employ abnormal behaviors through client modification or network packet tampering. Client-side detection methods have the merit of distributing the burden to clients but can easily be breached. In the other hand, server-side detection methods are trustworthy but consume tremendous amount of resources. Therefore, this paper proposes a security reinforcement method which involves both the client and the server. This method is expected to provide meaningful security fortification while minimizing server-side stress.

• Journal of Korea Game Society
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• v.14 no.5
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• pp.107-116
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• 2014

The traditional methodology of online game development is separating server development module and cilent development module. However developing and maintaining expenses have been increased a lot due to duplicated modules such as definitions of network protocols and managements of planning data. In this paper, we suggest an advanced methodology of online game development based on the integrated single module with client and server. Its effectiveness was shown by applying the proposed methodology in the development of the online game 'Chungmukong's Battle on the Sea'. In this case, the project size was reduced by 15.1% by using the integrated single module with client and server.