실시간 온라인 게임 서버에서의 게임 상태 동기화는 중요한 문제이며, 기존 동기화 방식은 상황 에 따라 성능이 변동하는 한계가 있다. 본 연구에서는 이를 해결하기 위해 하이브리드 동기화 방 식을 제안한다. 클라이언트 간 거리가 가까울 때는 Lockstep 방식을, 멀 때는 서버 동기화 방식 을 사용하여 일관성과 가용성을 모두 만족시킨다. 술래잡기 게임에서 하이브리드 방식을 적용한 결과, 기존 방식보다 최대 74.6% 향상된 위치 일관성과 23.6% 감소된 응답시간을 달성했다.

In real-time online game servers, game state synchronization between users is a severely important issue. However, existing game state synchronization methods have the problem that their performance fluctuates depending on the situation. In this paper, we propose a new hybrid synchronization method that provides satisfactory performance to users in all situations. This method guarantees consistency by always providing the same result by using the Lockstep synchronization method when the distance between clients is close, and satisfies availability by providing a fast response time by using the Server Authoritative method when the distance between clients is far. With a tag game, The hybrid synchronization method achieves up to a 74.6% improvement in position consistency and a reduction in response time by up to 23.6% compared to the existing synchronization methods.

ABSTRACT
1. Introduction
2. Related Works
3. Subject
    3-1. Design
    3-2. Implementation
4. Experiments and Evaluation
    4-1. Experimental method
    4-2. Experimental Evaluation
5. Conclusions
Acknowledgement
Reference
<국문초록>
<결론 및 향후 연구>

• YoonShin Hwang(Department of Game Design and Development, Sangmyung University, Seoul, Korea) | 황윤신
• Duream Park(Department of Game Design and Development, Sangmyung University, Seoul, Korea) | 박두림
• Hanul Sung(Department of Game Design and Development, Sangmyung University, Seoul, Korea) | 성한울 Corresponding author