System for the reliable, fast, low-latency communication of obje

Details System for the reliable, fast, low-latency communication of obje System for the reliable, fast, low-latency communication of obje

1997-08-29

1999-12-21

Dinh, Dung C.

Electrical computers and digital processing systems: multicomput

Computer conferencing

Cooperative computer processing

709204, 709206, G06F 1300, G06F 1516

Patent

active

060062541

ABSTRACT:
A system for fast, efficient and reliable communication of object state irmation among a group of processes combines the use of a fast, but lossy and thus unreliable communications channel to the group of processes and a server coupled to the group for providing data which has been lost in the multicasting. In one embodiment, a central server supports reliability and rapid joining while using UDP multicast messaging to achieve rapid interaction and low bandwidth. Differential messages are sent over the lossy channel to compactly describe how to compute the new state of an object from any of several previous states. Such a description can be interpreted even if some number of prior descriptions were not received, greatly reducing the need for explicit, round-trip message repairs while also conserving bandwidth. In one embodiment, the central server communicates with each member of the group over a reliable channel to robustly detect and repair objects affected by lost messages.

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patent: 5761433 (1998-06-01), Billings
patent: 5790772 (1998-08-01), Badovinatz et al.
patent: 5838909 (1998-11-01), Roy et al.
patent: 5898679 (1999-04-01), Brederveld et al.
patent: 5899810 (1999-05-01), Smith

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