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Synchronizing method for distributed simulation time advance and information transmission

A distributed simulation and time advancement technology, applied in transmission systems, electrical components, etc., can solve problems such as synchronization difficulties, difficulty in ensuring that time stamp messages have been received, inability to fully implement HLA interface specifications, etc., and achieve convenient system operation Effect

Active Publication Date: 2014-04-30
BEIJING SIMULATION CENT
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Problems solved by technology

In the implementation of HLA middleware RTI, the distributed simulation time advancement service is usually implemented using the reliable transmission mode TCP, and the message transmission service is implemented using the multicast mode Multicast. Because the two transmission modes and transmission paths are different, synchronization is difficult, and it is difficult to ensure simulation All time-stamped messages with Ts≤T before the time advance is allowed have been received, so the HLA interface specification cannot be fully implemented

Method used

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  • Synchronizing method for distributed simulation time advance and information transmission

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Embodiment Construction

[0018] Such as figure 1 Shown is a flow chart of a synchronization method for distributed simulation time advancement and message transmission, and the specific steps of the synchronization method are:

[0019] The first step is to build a system that implements the method

[0020] A system for synchronizing time advancement and message transmission in distributed simulations, including: node message sending processing LRC_S module, time advancing processing FEDEXEC module, node message receiving processing LRC_R module, message matching processing MSG_C module.

[0021] The functions of the LRC_S module are: using multicast, sending a time stamp message to the LRC_R module, and at the same time, copying the time stamp message, using TCP, and sending it to the FEDEXEC module; using TCP, sending the simulation time advancement service to the FEDEXEC module;

[0022] The function of the FEDEXEC module is: cumulatively calculate the received time stamp messages, when receiving t...

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Abstract

The invention discloses a synchronizing method for distributed simulation time advance and information transmission. The method comprises the steps that an LRC_S module transmits timestamp information to an LRC_R module through multicast, another timestamp information transmission path exactly the same with the simulation time advance service is established through a TCP at the same time, the LRC_R module carries out synchronization on the distributed simulation time advance and the information transmission by comparing the two paths of the timestamp information on the consistency, in this way, services regulated by an HLA interface is completely achieved, and the operation performance of a distributed simulation system is improved.

Description

technical field [0001] The invention relates to a synchronization method, in particular to a synchronization method for distributed simulation time advancement and message transmission. Background technique [0002] In the HLA-based distributed simulation system, according to the HLA interface specification, a distributed node applies for simulation time advancement to T, and before being allowed, it must ensure that the node has received all time stamp messages with Ts≤T. In the implementation of HLA middleware RTI, the distributed simulation time advancement service is usually implemented using the reliable transmission mode TCP, and the message transmission service is implemented using the multicast mode Multicast. Because the two transmission modes and transmission paths are different, synchronization is difficult, and it is difficult to ensure simulation Time advance allows all time stamped messages with Ts ≤ T to have been received, so that the HLA interface specificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 卿杜政杨凯张进郑燕红孙捷
Owner BEIJING SIMULATION CENT