Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing – Computer-to-computer data transfer regulating
Reexamination Certificate
2006-11-07
2006-11-07
Dharia, Rupal (Department: 2141)
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
Computer-to-computer data transfer regulating
C709S232000, C709S231000, C709S205000
Reexamination Certificate
active
07133927
ABSTRACT:
The present invention provides a network support mechanism, called Sync-VPN, that is transparent to real-time, multi-user distributed applications, such as online multi-player games in which the order of player actions is critical to the outcome. The invention uses a client/server application model, where a server coordinates state updates based on action messages sent by clients. The invention builds on bandwidth-quaranteed VPN service to ensure predictable packet delay and loss characteristics, thereby providing predictable packet service, state update fairness, and player action fairness. A Sync-out mechanism synchronizes delivery of state updates to all players enabling them to react to the same update fairly. A Sync-in mechanism processes action messages from all players in a fair order based on real-time occurrence. Sync-VPN employs a round-trip time estimation algorithm essential to message latency estimation in the Sync-out and Sync-in mechanisms.
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Guo Katherine H
Lin Yow-Jian
Paul Sanjoy
Dharia Rupal
Gillis Brian J.
Hodulik Matthew J.
Lucent Technologies - Inc.
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