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Research on Message Dissemination for MMOG Based on P2P

Author LouPeiLi
Tutor ShiXiangBin
School Shenyang Institute of Aeronautical College
Course Applied Computer Technology
Keywords MMOG P2P Message distribution Interest Management Packet aggregation
CLC G899
Type Master's thesis
Year 2008
Downloads 27
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Commercialization MMOG (Massively Multiplayer Online Games) are mostly using C / S mode , the server holds the shared state information and coordinate communication between players , the drawback is the scalability of the system is limited by the computing power of the server . Server cluster and grid technology to support to sacrifice hardware and maintenance cost of scalability. P2P as a distributed computing model can be terminal system resources marginalized , in order to effectively solve the above problems . The number of pure P2P model , however , there is no central server to forward a message , so the transmission and processing of the message O (N2) growth (N is the number of players in the game world ) . Frequent interaction between the large number of players the news will bring a lot of traffic load, and therefore design an efficient message distribution mechanism to save computing resources and network bandwidth for P2P-based MMOG has significance . MMOG message distribution is sent to the state of the game the players in the game world , the players maintain the consistency of the game view . Based on in -depth research and news distribution technology , mainly the following two aspects : 1 . Propose a suitable P2P MMOG news distribution mechanism . Difficult to maintain due to nodes based on the P2P network game players game state , this paper mainly consider the message-passing between the coordinator between the nodes , the coordinator node and ordinary node and ordinary node . Effectively distribute the game state between nodes at all levels to ensure the technology the locality principle basis for the management of interest as well as the Dead Reckoning , interactive games . 2 analysis of the characteristics of the game data packet found that the packet of data generated in the game world is relatively small , this paper presents the package based the game interaction threshold and polymerization threshold polymerization mechanism . This aggregation mechanism to meet the real-time game premise , can reduce the number of data packets sent and improve the efficiency of the distribution of the message . In addition , we propose to use the average degree of polymerization and average polymerization delay the packet aggregation mechanism assessment . The experiments show that the message distribution mechanism proposed in this paper as well as packet aggregation mechanism able to reduce the MMOG occupy network bandwidth and computing resources , basically achieved the expected goals .

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