System and method for reducing traffic and congestion on distributed interactive simulation networks

• US 20090187669A1
• Filed: 12/23/2008
• Published: 07/23/2009
• Est. Priority Date: 04/17/2000
• Status: Active Grant

• Current Assignee: Sons of Innovation LLC
• Original Assignee: Circadence Corporation
• Inventors: Vange, Mark, Thornton, Randy
• Granted Patent: US 8,024,481 B2
• Time in Patent Office: Days
• US Class Current: 709/230
• CPC Class Codes: H04L 41/5003 Managing SLA; Interaction between SLA and QoS
• CPC Class Codes: H04L 41/5087 wherein the managed service relates to voice services management of VoIP services H04M7/0081
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/1408 by monitoring network traffic monitoring network traffic per se H04L43/00
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/5651 Reducing the amount or size of exchanged application data
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A system and method are provided for communicating Distributed Interactive Simulation (DIS) traffic over a network in an accelerated manner. In one embodiment, DIS traffic is accelerated through use of accelerated DIS packets having a reduced size. In this manner, network traffic is reduced. Accelerated DIS packets may be created and communicated through one or more DIS accelerators. A first DIS accelerator may accept a DIS packet and create an accelerated DIS packet therefrom by comparing the DIS packet to a cache and forming an accelerated DIS packet comprising the differences between the DIS packet and the cache. Data in the original DIS packet may be subsequently restored by a second DIS accelerator which combines the information in the accelerated DIS packet and the cache to restore the original DIS packet. Accelerated DIS packets may be communicated over an encoded communication channel in one or more embodiments.

Claims

1. A method for accelerating DIS data traffic in a DIS network comprising:

accepting a DIS packet via a network transceiver of a DIS accelerator;

reading said DIS packet;

comparing one or more cache entries stored within a cache on a memory device of said DIS accelerator to said DIS packet to identify one or more similar cache entries;

identifying modified information comprising one or more differences between said DIS packet and said one or more similar cache entry; and

creating an accelerated DIS packet comprising said modified information.

2. The method of claim 1 further comprising sending said accelerated DIS packet to a second DIS accelerator via a WAN.

3. The method of claim 1 further comprising sending said accelerated DIS packet to a second DIS accelerator using one or more TMP links.

4. The method of claim 1 further comprising sending said accelerated DIS packet to a second DIS accelerator through a predetermined accelerated UDP port of said network transceiver.

5. The method of claim 1 further comprising storing said DIS packet in a packet queue on said memory device after reading said DIS packet, said packet queue configured to buffer DIS packets.

6. The method of claim 1 further comprising storing said modified information in a minimized packet queue on said memory device after comparing said DIS packet to said cache entry, wherein said accelerated DIS packet is created from said modified information in said minimized packet queue.

7. The method of claim 1 further comprising storing said DIS packet in a new cache entry in said cache if said DIS packet is not already in said cache.

8. A method for accelerating DIS traffic in a DIS network comprising:

accepting an accelerated DIS packet via a network transceiver of a DIS accelerator, said accelerated DIS packet comprising modified information;

locating one or more cache entries corresponding to said accelerated DIS packet, said cache entries stored within a cache on a memory device of said DIS accelerator;

restoring a body of an original DIS packet by combining said one or more cached entries with said modified information; and

creating a DIS packet comprising said body.

9. The method of claim 8 further comprising sending said DIS packet to one or more DIS devices via a LAN.

10. The method of claim 8, wherein said accelerated DIS packet is accepted via a TMP link of said DIS accelerator.

11. The method of claim 8 wherein said accelerated DIS packet is accepted through a predetermined accelerated UDP port of said network transceiver.

12. The method of claim 8 further comprising storing said body in a packet queue on said memory device, wherein said DIS packet is created from said body in said packet queue.

13. The method of claim 8 further comprising storing said modified information in a minimized packet queue on said memory device after accepting said accelerated DIS packet, wherein said minimized packet queue is configured to buffer modified information.

14. The method of claim 8 further comprising updating said cache with said modified information after said body has been restored.

15. A system for accelerating DIS traffic comprising:

a first DIS accelerator comprising a first cache on a first memory device and a first accelerated port on a first network interface, said first DIS accelerator configured to accept a DIS packet from a first LAN and send an accelerated DIS packet via said first accelerated port whereby said accelerated DIS packet comprises modified information comprising one or more differences between said DIS packet and one or more cached entries of said first cache corresponding to said DIS packet;

a second DIS accelerator comprising a second cache on a second memory device and a second accelerated port on a second network interface, said second DIS accelerator configured to accept said accelerated DIS packet from said first DIS accelerator via said second accelerated port and send a DIS packet one or more DIS devices on a second LAN whereby said DIS packet comprises a body restored from a combination of said modified information and one or more cached entries of said second cache corresponding to said accelerated DIS packet; and

a communication link between said first accelerated port and said second accelerated port.

16. The system of claim 15, wherein said communication link is a TMP link between said first accelerated port and said second accelerated port.

17. The system of claim 15, wherein said one or more cached entries of said first cache corresponding to said DIS packet comprise an ID and type matching an ID and type of said DIS packet.

18. The system of claim 15, wherein said one or more cached entries of said second cache corresponding to said accelerated DIS packet comprise an ID and type matching an ID and type of said accelerated DIS packet.

19. The system of claim 15 further comprising one or more DIS devices on said first LAN and one or more DIS devices on said second LAN.

20. The system of claim 15, wherein said first DIS accelerator or said second DIS accelerator is part of a network device selected from the group consisting of a front-end mechanism and a back-end mechanism.