- Tytuł:
- Modeling and Analysis of Additional Clear Channel Assessment to Improve Performance of IEEE 802.15.4-based MAC Protocol
- Autorzy:
-
Asuti, Manjunath G.
Basarkod, Prabhugoud I. - Powiązania:
- https://bibliotekanauki.pl/articles/308709.pdf
- Data publikacji:
- 2020
- Wydawca:
- Instytut Łączności - Państwowy Instytut Badawczy
- Tematy:
-
clear channel assessment
CSMA/CA mechanism
IEEE 802.15.4
MAC protocol
wireless sensor networks - Opis:
- Design of the MAC protocol is crucial in all wireless sensor networks (WSNs) due to its influence on the performance of the transceiver, i.e. the most energy-consuming component of each sensor node. A mechanism known as “carrier sense multiple access with collision avoidance” (CSMA/CA) is used for accessing the wireless channel in the IEEE 802.15.4 standard-based MAC protocol in order to avoid collisions between the network’s communicating nodes. CSMA/CA relies on two clear channel assessments (CCA=2) for checking the status of the channel. In this paper, we develop an additional CCA algorithm for the two scenarios encountered in star topology-enabled WSNs. Next, we investigate the impact of an additional clear channel assessment (CCA=3) on performance in IEEE 802.15.4. We develop a Markov chain model for the proposed methodology, and validate it using Matlab. Simulation results show that there is a significant improvement of performance metrics in the IEEE 802.15.4 standard-based MAC protocol with an additional CCA.
- Źródło:
-
Journal of Telecommunications and Information Technology; 2020, 3; 10-21
1509-4553
1899-8852 - Pojawia się w:
- Journal of Telecommunications and Information Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł