Institute of Electrical and Electronics Engineers. Standard for Information Technology, Protocols for Distributed Interactive Simulation. Technical report, Mar. 1993.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....group and partition to minimize the communication cost. Lately in [6, 9, 10] a formal model of Dynamic multicast group partitioning is proposed, with careful analysis to various distribution of avatars. There are some interesting work about maintaining consistency in DVE. The DIS protocol [1, 2] addresses the issue of using 2nd 3rd order entities (velocity and acceleration) of the objects to improve the consistency under limited bandwidth network. In [3] a more novel way to anticipate the position of the objects is given. They all make use of the concept of anticipation to predict the ....

Institute of Electrical and Electronics Engineers, International Standard, ANSI/IEEE Standard 1278-1993, Standard for Information Technology, Protocol Distributed Interactive Simulation, March 1993

....group and partition to minimize the communication cost. Lately in [6, 9, 10] a formal model of Dynamic multicast group partitioning is proposed, with careful analysis to various distribution of avatars. There are some interesting work about maintaining consistency in DVE. The DIS protocol [1, 2] addresses the issue of using 2nd 3rd order entities (velocity and acceleration) of the objects to improve the consistency under limited bandwidth network. In [3] a more novel way to anticipate the position of the objects is given. They all make use of the concept of anticipation to predict the ....

Institute of Electrical and Electronics Engineers, International Standard, ANSI/IEEE Standard 1278-1993, Standard for Information Technology, Protocol Distributed Interactive Simulation, March 1993

...., and the states of objects C, D, E are stored in computer C 2 etc. The state information of an object include its current position, e.g. x; y) for 2D virtual world or (x; y; z) for a 3D virtual world. Also, we can take the velocity and acceleration in the state as suggested by IEEE DIS Protocol[8]. Up to now, we have defined an architecture that distribute objects in the virtual world, however, we do not account for the cell size or even the cell shape in details. These consideration is not the scope of this paper, and we merely assume that the cell is rectangular and the size is ....

Institute of Electrical and Electronics Engineers, International Standard, ANSI/IEEE Standard 1278-1993, Standard for Information Technology, Protocol Distributed Interactive Simulation, March 1993

....extend these ideas further to provide a well define mathematical and algorithmic framework on the analysis and optimization of communication cost within DVE world. 2 Related Works There is a multitude of works on the DVE related systems. The spectrum include designing new protocol for DVE system[8], adopting existing multicast protocol to DVE system[2, 3] special technique to optimize communication cost[1] and some research works on implementing a real system to evaluate the possibility of large scale DVE[6, 14, 5] NPSNET[6] is an early project that attempt to build a Distributed ....

Institute of Electrical and Electronics Engineers, International Standard, ANSI/IEEE Standard 1278-1993, Standard for Information Technology, Protocol Distributed Interactive Simulation, March 1993

....information is conveyed, in a similar manner to SIMNET, by twenty seven PDUs defined by the IEEE 1278 DIS standard, but only four of these are for entity interaction. The remainder of the PDUs are for transmitting information on supporting actions, electronic emanations, and for simulation control [71]. The Entity State PDU (ESPDU) is used to communicate information about a vehicle s current state, including position, orientation, velocity, and appearance (see Table 2) The Fire PDU contains data on any weapons or ordnance that are fired or dropped. The Detonation PDU is sent when a munition ....

....orientation, velocity, and appearance (see Table 2) The Fire PDU contains data on any weapons or ordnance that are fired or dropped. The Detonation PDU is sent when a munition detonates or an entity crashes. The actual structure of a PDU is very regimented and is explained in full detail in [71]. 2. Simulation Philosophy The networking technique used in NPSNET IV, evolved from SIMNET, and embodied in DIS follows the players and ghosts paradigm presented in [17] In this paradigm, each object is controlled on its own host workstation by a software object called a Player. On every other ....

Institute for Simulation and Training, IST-CR-93-15, Standard for Information Technology, Protocols for Distributed Interactive Simulation Applications [Proposed IEEE Standard Draft], University of Central Florida, Orlando, Florida, June 1993.

....in Figure 11. Figure 11: NPSNET user inetrface 4.1.1 Distributed Interactive Simulation Protocol Distributed Interactive Simulation (DIS) is a U.S. DoD protocol that provides support for large scale interactive distributed simulations. As of 1993, DIS is an also accepted as ANSI IEEE standard [30]. DIS was designed as a man in the loop simulation in which participants interact in a shared environment from geographically dispersed sites [41] DIS evolved from the somewhat simpler SIMNET (SIMulation NETwork) standard. The overview of SIMNET and DIS and the relationship between them is given ....

Institute of Electrical and Electronics Engineers. Standard for Information Technology, Protocols for Distributed Interactive Simulation . ANSI/IEEE 1278-1993, 1993.

....considerably larger than SIMNET. The DIS environment simulates events on the surface of the earth, both ocean and land, below the surface of the ocean, and in the atmosphere, including space; based on a round earth model. SIMNET simulated engagements on the surface of a flat earth and in the air. [IST93f] The standards provide guidance for data formats, data representation, model representation, and communication network services. DIS addresses issues relating to network based simulations. Issues effecting the performance of individual simulation systems are not included in the DIS standards. ....

....physical layers and vice versa. Figure 3 illustrates DIS maximum latency in the context of the ISO OSI Reference Model. Figure 3 DIS Maximum Latency Specification G. INFORMATION INTERCHANGE The DIS Standard for Information Technology, Protocols for Distributed Interactive Simulation Applications, [IST93f], defines the content and protocol for exchanging data messages between simulation applications. The data messages, or protocol data units (PDUs) constitute the user data in the network environment. PDUs convey data pertaining to the state of simulated entities, interaction between entities, ....

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Institute for Simulation and Training, IST-CR-93-15, Standard for Information Technology, Protocols for Distributed Interactive Simulation Applications [Proposed IEEE Standard Draft], University of Central Florida, Orlando, Florida, June 1993.

....Protocols for Distributed Services: Over the past few years, several application speci c protocols have been designed and deployed for multi party communications. Examples include Scalable Reliable Multicast [10] Real Time Transport Protocol [17] and Distributed Interactive Simulation [14]. We believe that future distributed services will also develop application speci c protocols for multiparty communications; i.e. network layer support that meets the varying needs of these applications is unlikely. Our work on the substrate will broaden our understanding of the design of such ....

Institute of Electrical and Electronics Engineers. Protocols for Distributed Interactive Simulation. ANSI/IEEE Standard 1278-1993, 1993.

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Institute of Electrical and Electronics Engineers. Standard for Information Technology, Protocols for Distributed Interactive Simulation. Technical report, Mar. 1993.

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Institute of Electrical and Electronics Engineers. Standard for Information Technology, Protocols for Distributed Interactive Simulation. Tech. rep., Mar. 1993.

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Institute of Electrical and Electronics Engineers, International Standard, ANSI/IEEE Std 1278, Standard for Information Technology, Protocols for Distributed Interactive Simulation, March 1993.

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Institute of Electrical and Electronics Engineers (IEEE), International Standard, ANSI/IEEE Std 1278-1993, Standard for Information Technology, Protocols for Distributed Interactive Simulation, March, 1993.

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IEEE1278 Institute of Electrical and Electronics Engineers, International Standard, ANSI/ IEEE Std 1278-1993, Standard for Information Technology, Protocols for Distributed Interactive Simulation, March 1993.

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