A dds data interaction method in an unstable network environment

Abstract

The invention provides a DDS data interaction method in an unstable network environment, aiming at solving the problem that the entity in the DDS middleware fails to register and the application cannot be normally operated when the data is transmitted in the unstable network by using the DDS middleware and the problem that the data cannot be normally interacted between the entities that are constructed in different network states. According to the DDS data interaction method, the normal communication of the data can be achieved by real-timely detecting the network state and changing the attribute of the entity object in the DDS middleware according to the current network state; during the real-time operation of monitoring the network state, the network state is timely fed back, the state of the DDS entity can be adjusted according to the fed-back network state, and the stable operation of the DDS can be finally ensured; and meanwhile, the subscription state of the DDS entity object can be maintained when the network state changes, the change of the network state can be felt by the upper layer users, but the normal subscription of the current data cannot be affected, and thus the stability of data communication can be ensured.

Description

technical field [0001] The invention belongs to the technical field of communication engineering, in particular to a DDS data interaction method in an unstable network environment. Background technique [0002] The information world is faced with complex and changeable mass data information, real-time, efficient and high-speed data interaction plays a vital role, and real-time information systems present a network-centric development trend. With the high-speed transmission of the network, distributed application systems play a pivotal role in many fields such as finance, transportation, and military affairs. [0003] Different communication platforms and different users have different quality of service (QOS) requirements for data transmission. There are mainly three types of node communication in the current network: point-to-point communication, client / server (C / S) communication , publish / subscribe communication. [0004] Point-to-point communication is the simplest comm...

AI Technical Summary

Problems solved by technology

However, when the information is generated on multiple nodes, the C / S mode requires all the information to be backed up to the server, and the data is sent to the client that subsequently sends the data request, resulting in low efficiency of data interaction and poor real-time performance

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