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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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Superframe structure of the beacon interval shifting scheme.
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f3-sensors-12-10930: Superframe structure of the beacon interval shifting scheme.

Mentions: Figure 3 illustrates the superframe structure of the beacon interval shifting scheme. Unlike conventional TDMA-based MAC protocols, a hub performs carrier sensing during a fixed period, TCS, before its beacon transmission. The carrier sensing period can be decided independently according to the application requirements of each BAN. During the carrier sensing period, the hub identifies whether the channel is occupied by other networks or not. If the channel is idle during the carrier sensing period, the hub transmits a beacon immediately. As the hub only performs carrier sensing before a beacon transmission, this technique does not provide any overhead to the nodes when the channel is in an idle state.


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

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

Superframe structure of the beacon interval shifting scheme.
© Copyright Policy
Related In: Results  -  Collection

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

f3-sensors-12-10930: Superframe structure of the beacon interval shifting scheme.
Mentions: Figure 3 illustrates the superframe structure of the beacon interval shifting scheme. Unlike conventional TDMA-based MAC protocols, a hub performs carrier sensing during a fixed period, TCS, before its beacon transmission. The carrier sensing period can be decided independently according to the application requirements of each BAN. During the carrier sensing period, the hub identifies whether the channel is occupied by other networks or not. If the channel is idle during the carrier sensing period, the hub transmits a beacon immediately. As the hub only performs carrier sensing before a beacon transmission, this technique does not provide any overhead to the nodes when the channel is in an idle state.

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