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A beacon interval shifting scheme for interference mitigation in body area networks.

Kim S, Kim S, Kim JW, Eom DS - Sensors (Basel) (2012)

Bottom Line: IEEE 802.15 Task Group 6 presented several schemes to reduce such interference, but these schemes are still not proper solutions for BANs.We present a novel distributed TDMA-based beacon interval shifting scheme that reduces interference in the BANs.The simulation results show that the proposed scheme has a lower packet loss, energy consumption, and delivery-latency than the schemes of IEEE 802.15 Task Group 6.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical Engineering, Korea University, Seoul 136-713, Korea. kskkck@korea.ac.kr

ABSTRACT
This paper investigates the issue of interference avoidance in body area networks (BANs). IEEE 802.15 Task Group 6 presented several schemes to reduce such interference, but these schemes are still not proper solutions for BANs. We present a novel distributed TDMA-based beacon interval shifting scheme that reduces interference in the BANs. A design goal of the scheme is to avoid the wakeup period of each BAN coinciding with other networks by employing carrier sensing before a beacon transmission. We analyze the beacon interval shifting scheme and investigate the proper back-off length when the channel is busy. We compare the performance of the proposed scheme with the schemes presented in IEEE 802.15 Task Group 6 using an OMNeT++ simulation. The simulation results show that the proposed scheme has a lower packet loss, energy consumption, and delivery-latency than the schemes of IEEE 802.15 Task Group 6.

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Node energy consumption according to the carrier sensing period.
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f7-sensors-12-10930: Node energy consumption according to the carrier sensing period.

Mentions: Figure 7 illustrates the energy consumption of a node with regard to the carrier sensing period. We assume that PWRx is 2.9 mW, and the maximum delivery-latency demanded by the application is 200 ms in this analysis. As Figure 6 shows, the increase of BANs and a high duty-cycle result in a high probability of the channel being busy, which causes repeated back-offs. Thus, the energy consumption is high with many BANs and a high duty-cycle. As the carrier sensing period becomes longer, the energy consumption decreases because the long carrier sensing period increases the wakeup interval for beacon reception. Therefore, an application demanding energy-efficiency can take advantage by using a longer carrier sensing period.


A beacon interval shifting scheme for interference mitigation in body area networks.

Kim S, Kim S, Kim JW, Eom DS - Sensors (Basel) (2012)

Node energy consumption according to the carrier sensing period.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472867&req=5

f7-sensors-12-10930: Node energy consumption according to the carrier sensing period.
Mentions: Figure 7 illustrates the energy consumption of a node with regard to the carrier sensing period. We assume that PWRx is 2.9 mW, and the maximum delivery-latency demanded by the application is 200 ms in this analysis. As Figure 6 shows, the increase of BANs and a high duty-cycle result in a high probability of the channel being busy, which causes repeated back-offs. Thus, the energy consumption is high with many BANs and a high duty-cycle. As the carrier sensing period becomes longer, the energy consumption decreases because the long carrier sensing period increases the wakeup interval for beacon reception. Therefore, an application demanding energy-efficiency can take advantage by using a longer carrier sensing period.

Bottom Line: IEEE 802.15 Task Group 6 presented several schemes to reduce such interference, but these schemes are still not proper solutions for BANs.We present a novel distributed TDMA-based beacon interval shifting scheme that reduces interference in the BANs.The simulation results show that the proposed scheme has a lower packet loss, energy consumption, and delivery-latency than the schemes of IEEE 802.15 Task Group 6.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical Engineering, Korea University, Seoul 136-713, Korea. kskkck@korea.ac.kr

ABSTRACT
This paper investigates the issue of interference avoidance in body area networks (BANs). IEEE 802.15 Task Group 6 presented several schemes to reduce such interference, but these schemes are still not proper solutions for BANs. We present a novel distributed TDMA-based beacon interval shifting scheme that reduces interference in the BANs. A design goal of the scheme is to avoid the wakeup period of each BAN coinciding with other networks by employing carrier sensing before a beacon transmission. We analyze the beacon interval shifting scheme and investigate the proper back-off length when the channel is busy. We compare the performance of the proposed scheme with the schemes presented in IEEE 802.15 Task Group 6 using an OMNeT++ simulation. The simulation results show that the proposed scheme has a lower packet loss, energy consumption, and delivery-latency than the schemes of IEEE 802.15 Task Group 6.

Show MeSH
Related in: MedlinePlus