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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 number of BANs.
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f11-sensors-12-10930: Node energy consumption according to the number of BANs.

Mentions: Energy-efficiency is an important factor in BANs. A node has less battery power than a hub. Accordingly, the energy-efficiency of a node is more important than that of the hub. Figure 11 illustrates the steep growth in energy consumption of the basic scheme and the beacon shifting scheme as the number of BANs increases, because many missed data are continuously retransmitted regardless of transmission success or failure. The beacon interval shifting scheme consumes less energy than the other schemes because data retransmissions owing to packet losses scarcely occur. However, a lot of back-offs lead the nodes to needlessly overhear the channel for beacon receptions. For that reason, energy consumption also increases with the number of BANs, as shown in Figure 11.


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 number of BANs.
© Copyright Policy
Related In: Results  -  Collection

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

f11-sensors-12-10930: Node energy consumption according to the number of BANs.
Mentions: Energy-efficiency is an important factor in BANs. A node has less battery power than a hub. Accordingly, the energy-efficiency of a node is more important than that of the hub. Figure 11 illustrates the steep growth in energy consumption of the basic scheme and the beacon shifting scheme as the number of BANs increases, because many missed data are continuously retransmitted regardless of transmission success or failure. The beacon interval shifting scheme consumes less energy than the other schemes because data retransmissions owing to packet losses scarcely occur. However, a lot of back-offs lead the nodes to needlessly overhear the channel for beacon receptions. For that reason, energy consumption also increases with the number of BANs, as shown in Figure 11.

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