Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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A Study on the Usages of DDS Middleware for Efficient Data Transmission and Reception

  • Received : 2018.09.06
  • Accepted : 2018.10.17
  • Published : 2018.11.30
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Abstract

Data Distribution Service(DDS) provides the communications service programmers need to distribute time-critical data between embedded and/or enterprise devices or nodes. In this paper, I propose efficient methods for transmitting and receiving messages of various characteristics in real-time using DDS middleware. For high-frequency characteristic data, I describe several DDS packet types and various default and extended DDS QoS policies. In particular, the batching method is probably the best solution when considering several performance aspects. For large-capacity characteristic data. I will show a method using extended DDS QoS policies, a segmentation and reassembly method, and transmitting and receiving a large-capacity data with low priority method considering network conditions. Finally, I simulate and compare the result of performance for each methods. This results will help determine efficient methods for transmitting and receiving messages of various characteristics using DDS middleware.

Keywords

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Fig. 1. Publish/Subscribe Model

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Fig. 2. DDS packet types

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Fig. 3. Batching DDS Packet Type

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Fig. 4. Comparison for message sending and receiving methods

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Fig. 5. Comparison with synchronous and asynchronous method

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Fig. 6. A program for high frequency data test

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Fig. 7. A result of 3,000 times transmission and reception test

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Fig. 8. A result of 10,000 times transmission and reception test

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Fig. 9. A result of large-capacity data transmission and reception test

Table 1. Test Environment

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Table 2. A result of high-frequency data transmission and reception test

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Table 3. A result of large-capacity data transmission and reception test

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Table 4. A result of background data transmission and reception test

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References

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