TDMA versus CSMA/CA for wireless multi-hop communications: a comparison for soft real-time networking - Archive ouverte HAL Access content directly
Conference Papers Year : 2016

TDMA versus CSMA/CA for wireless multi-hop communications: a comparison for soft real-time networking

Abstract

Wireless networks have become a very attractive solution for soft real-time data transport in the industry. For such technologies to carry real-time traffic, reliable bounds on end-to-end communication delays have to be ascertained to warrant a proper system behavior. As for legacy wired embedded and real-time networks, two main wireless multiple access methods can be leveraged: (i) time division multiple access (TDMA), which follows a time-triggered paradigm and (ii) Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA), which follows an event-triggered paradigm. This paper proposes an analytical comparison of the time behavior of two representative TDMA and CSMA/CA protocols in terms of worst-case end-to-end delay. This worst-case delay is expressed in a probabilistic manner because our analytical framework captures the versatility of the wireless medium. Analytical delay bounds are obtained from delay distributions, which are compared to fine-grained simulation results. Exhibited study cases show that TDMA can offer smaller or larger worst-case bounds than CSMA/CA depending on its settings.
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Dates and versions

hal-01787383 , version 1 (07-05-2018)

Identifiers

  • HAL Id : hal-01787383 , version 1
  • OATAO : 18976

Cite

Qi Wang, Katia Jaffrès-Runser, Yongjun Xu, Jean-Luc Scharbarg, Zhulin An, et al.. TDMA versus CSMA/CA for wireless multi-hop communications: a comparison for soft real-time networking. 12th IEEE World Conference on Factory Communication Systems (WFCS 2016), May 2016, Aveiro, Portugal. pp. 1-4. ⟨hal-01787383⟩
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