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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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The measured PRR according to the different channel environment.
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f2-sensors-12-10930: The measured PRR according to the different channel environment.

Mentions: Figure 2 indicates the packet received ratio (PRR) in different scenarios. In scenario 1, scenario 2, and scenario 3, the packet loss gradually increases due to the signal attenuation. In scenario 4, scenario 5, and scenario 6, the BAN is influenced by the interference that is caused by another BAN. It depends on the distance between BANs and the transmit power level of the BAN. Because the mobility of persons varies the distance and the transmit power level, it has a possibility to cause a serious problem as if scenario 4, scenario 5, and scenario 6. Therefore, we should consider not only the signal attenuation effect but also the interference effect on the link in the BAN. In this paper, we focus on mitigating the interference between each BAN.


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

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

The measured PRR according to the different channel environment.
© Copyright Policy
Related In: Results  -  Collection

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

f2-sensors-12-10930: The measured PRR according to the different channel environment.
Mentions: Figure 2 indicates the packet received ratio (PRR) in different scenarios. In scenario 1, scenario 2, and scenario 3, the packet loss gradually increases due to the signal attenuation. In scenario 4, scenario 5, and scenario 6, the BAN is influenced by the interference that is caused by another BAN. It depends on the distance between BANs and the transmit power level of the BAN. Because the mobility of persons varies the distance and the transmit power level, it has a possibility to cause a serious problem as if scenario 4, scenario 5, and scenario 6. Therefore, we should consider not only the signal attenuation effect but also the interference effect on the link in the BAN. In this paper, we focus on mitigating the interference between each BAN.

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