Vatsa, SV and Mohan, A and Kumar, A (2021) Implementing QZMAC (a Decentralized Delay Optimal MAC) over 6TiSCH under the Contiki OS in an IEEE 802.15.4 Network. In: 2021 International Conference on COMmunication Systems and NETworkS, COMSNETS 2021, 5-9 Jan 2021, Bangalore; India, pp. 145-147.
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Abstract
Motivated by the emerging delay-sensitive applications of the Internet of Things (IoT), there has been a resurgence of interest in developing medium access control (MAC) protocols in a time-slotted framework. The resource-constrained, ad-hoc nature of wireless networks typical of the IoT also forces the amount of control information exchanged across the network-required to make scheduling decisions-to a minimum. In a previous article we proposed a protocol called QZMAC that (i) provides provably low mean delay, (ii) has distributed control(i.e., there is no central scheduler), and (iii) does not require explicit exchange of state information or control signals. In the present article, we implement and demonstrate the performance of QZMAC on a test bed consisting of CC2420 based Crossbow telosB motes, running the 6TiSCH communication stack on the Contiki operating system over the 2.4GHz ISM band. QZMAC achieves its near-optimal delay performance using a clever combination of polling and contention modes. We demonstrate the polling and the contention modes of QZMAC separately. We use an Adaptive Synchronization Technique in our implementation which we also demonstrate. Our network shows good delay performance even in the presence of heavy interference from ambient WiFi networks. © 2021 IEEE.
| Item Type: | Conference Paper |
|---|---|
| Publication: | 2021 International Conference on COMmunication Systems and NETworkS, COMSNETS 2021 |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Additional Information: | The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc. |
| Keywords: | Distributed parameter control systems; IEEE Standards; Internet of things; Medium access control; Physical layer; Scheduling; Titanium compounds, Adaptive synchronizations; Communication stacks; Contiki operating systems; Delay-sensitive applications; IEEE 802.15.4 networks; Internet of thing (IOT); Medium access control protocols; Scheduling decisions, Wi-Fi |
| Department/Centre: | Division of Electrical Sciences > Electrical Communication Engineering |
| Date Deposited: | 24 Mar 2021 05:39 |
| Last Modified: | 24 Mar 2021 05:39 |
| URI: | http://eprints.iisc.ac.in/id/eprint/68526 |
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