Improving control performance by minimizing jitter in RT-WiFi networks

Quan Leng, Yi Hung Wei, Song Han, Aloysius K. Mok, Wenlong Zhang, Masayoshi Tomizuka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

Wireless networked control systems have received significant attention due to their great advantages in enhanced system mobility, and reduced deployment and maintenance cost. To support a wide range of high-speed wireless control applications, we presented in our prior work the design and implementation of a flexible real-time high-speed wireless communication platform called RT-WiFi. RT-WiFi currently provides up to 6kHz sampling rate and deterministic timing guarantee on packet delivery. While guaranteed delivery latency is essential for networked control, control performance is also impacted by communication jitter and other QoS parameters. To reduce jitter, a flexible network manager is needed to control network-wide scheduling of packet transportation. In this paper, we present an RT-WiFi network manager design and propose efficient solutions for two fundamental RT-WiFi network management problems. To improve control performance in networked control systems, our RT-WiFi network manager is designed to generate data link layer communication schedule with minimum jitter under both static and dynamic network topologies. In order to minimize network management overhead, an efficient data structure called S-tree is invented to manage the communication requests to deal with network dynamics. We have implemented the RT-WiFi network manager, and validated its network and control performance through extensive experiments with a real application.

Original languageEnglish (US)
Title of host publicationProceedings - Real-Time Systems Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages63-73
Number of pages11
Volume2015-January
EditionJanuary
DOIs
StatePublished - Jan 14 2015
Externally publishedYes
Event35th IEEE Real-Time Systems Symposium, RTSS 2014 - Rome, Italy
Duration: Dec 2 2014Dec 5 2014

Other

Other35th IEEE Real-Time Systems Symposium, RTSS 2014
CountryItaly
CityRome
Period12/2/1412/5/14

Fingerprint

Jitter
Managers
Networked control systems
Communication
Network management
Data structures
Quality of service
Scheduling
Topology
Sampling
Costs
Experiments

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

Cite this

Leng, Q., Wei, Y. H., Han, S., Mok, A. K., Zhang, W., & Tomizuka, M. (2015). Improving control performance by minimizing jitter in RT-WiFi networks. In Proceedings - Real-Time Systems Symposium (January ed., Vol. 2015-January, pp. 63-73). [7010475] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RTSS.2014.26

Improving control performance by minimizing jitter in RT-WiFi networks. / Leng, Quan; Wei, Yi Hung; Han, Song; Mok, Aloysius K.; Zhang, Wenlong; Tomizuka, Masayoshi.

Proceedings - Real-Time Systems Symposium. Vol. 2015-January January. ed. Institute of Electrical and Electronics Engineers Inc., 2015. p. 63-73 7010475.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Leng, Q, Wei, YH, Han, S, Mok, AK, Zhang, W & Tomizuka, M 2015, Improving control performance by minimizing jitter in RT-WiFi networks. in Proceedings - Real-Time Systems Symposium. January edn, vol. 2015-January, 7010475, Institute of Electrical and Electronics Engineers Inc., pp. 63-73, 35th IEEE Real-Time Systems Symposium, RTSS 2014, Rome, Italy, 12/2/14. https://doi.org/10.1109/RTSS.2014.26
Leng Q, Wei YH, Han S, Mok AK, Zhang W, Tomizuka M. Improving control performance by minimizing jitter in RT-WiFi networks. In Proceedings - Real-Time Systems Symposium. January ed. Vol. 2015-January. Institute of Electrical and Electronics Engineers Inc. 2015. p. 63-73. 7010475 https://doi.org/10.1109/RTSS.2014.26
Leng, Quan ; Wei, Yi Hung ; Han, Song ; Mok, Aloysius K. ; Zhang, Wenlong ; Tomizuka, Masayoshi. / Improving control performance by minimizing jitter in RT-WiFi networks. Proceedings - Real-Time Systems Symposium. Vol. 2015-January January. ed. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 63-73
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