An Interference-Aware Traffic-Priority-Based Link Scheduling Algorithm for Interference Mitigation in Multiple Wireless Body Area Networks

Le, Thien T. T.; Moh, Sangman

doi:10.3390/s16122190

Cited by 14 publications

(13 citation statements)

References 28 publications

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“…Journal of Sensors communication [22]. Le and Moh [23] proposed an interference-aware traffic-priority-based link scheduling (ITLS) algorithm to overcome inter-WBAN interference in densely deployed WBANs. However, it is not very effective in sparsely deployed node networks.…”

Section: Related Workmentioning

confidence: 99%

An Optimal Backoff Time-Based Internetwork Interference Mitigation Method in Wireless Body Area Network

Xie

Wang

et al. 2020

Journal of Sensors

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When multiple Wireless Body Area Networks (WBANs) are aggregated, the overlapping region of their communications will result in internetwork interference, which could impose severe impacts on the reliability of WBAN performance. Therefore, how to mitigate the internetwork interference becomes the key problem to be solved urgently in practical applications of WBAN. However, most of the current researches on internetwork interference focus on traditional cellular networks and large-scale wireless sensor networks. In this paper, an Optimal Backoff Time Interference Mitigation Algorithm (OBTIM) is proposed. This method performs rescheduling or channel switching when the performance of the WBANs falls below tolerance, utilizing the cell neighbour list established by the beacon method. Simulation results show that the proposed method improves the channel utilization and the network throughput, and in the meantime, reduces the collision probability and energy consumption, when compared with the contention-based beacon schedule scheme.

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Section: Related Workmentioning

confidence: 99%

An Optimal Backoff Time-Based Internetwork Interference Mitigation Method in Wireless Body Area Network

Xie

Wang

et al. 2020

Journal of Sensors

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“…In real applications, inter-WBAN interference may occur when many WBANs try to access the same single channel simultaneously. The interference mitigation techniques can be categorized as a power control scheme, or medium access control schemes to schedule the transmission in the time domain or frequency domain [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. In Reference [ 14 ], the power of the transmission link from the sensor nodes to the coordinator, or vice versa, are adjusted to achieve a high transmission rate while avoiding the interference from the neighbors.…”

Section: Related Workmentioning

confidence: 99%

“…In Reference [ 14 ], the power of the transmission link from the sensor nodes to the coordinator, or vice versa, are adjusted to achieve a high transmission rate while avoiding the interference from the neighbors. Another efficiency algorithm is to schedule the working nodes in the time domain or frequency domain, where the scheduling algorithms are applied to the WBAN such that the transmission of the WBAN is scheduled based on the node level [ 15 , 20 ] or the WBAN level [ 18 , 19 ]. However, in the scheduling algorithm, the coordinators of the WBAN have to negotiate for common scheduling, which results in increased latency.…”

Section: Related Workmentioning

confidence: 99%

Hybrid Multi-Channel MAC Protocol for WBANs with Inter-WBAN Interference Mitigation

Moh

2018

Sensors

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Herein, we propose a hybrid multi-channel medium access control (HM-MAC) protocol for wireless body area networks (WBANs) that mitigates inter-WBAN interference significantly. In HM-MAC, a superframe consists of a random access phase and a scheduled access phase. That is, a carrier sensing multiple access with collision avoidance (CSMA/CA) phase and a time division multiple access (TDMA) phase are included in a superframe. The random access phase allows higher-priority users to transmit data packets with low latency and high reliability. The retransmission of data packets is also performed in the random access phase. The periodic data are transmitted in the scheduled phase, resulting in no contention and high reliability. A channel selection algorithm is also proposed to avoid collision between neighboring WBANs. The HM-MAC protocol allows multiple transmissions simultaneously on different channels, resulting in high throughput and low collision. The sensor nodes update idle channels by listening to the beacon signal; consequently, the sensor nodes can change the working channel to reduce inter-WBAN interference. According to our simulation results, HM-MAC achieves a higher packet delivery ratio and higher throughput with lower energy consumption than the conventional scheme in multi-WBAN scenarios. HM-MAC also causes lower end-to-end delays for higher-priority users.

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“…Recently, some interference mitigation techniques have been developed for multiple WBANs coexistence, resulting in increasing packet delivery ratio and decreasing latency [ 13 ]. In our previous work of interference mitigation, the scheduling algorithm improves the network performance regarding to the priority of the sensed data [ 16 ]. In [ 17 ], the algorithm exploits a hybrid MAC superframe that is comprised of CSMA/CA and TDMA to avoid concurrent transmission from nearby WBANs.…”

Section: Related Workmentioning

confidence: 99%

Link Scheduling Algorithm with Interference Prediction for Multiple Mobile WBANs

Moh

2017

Sensors

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As wireless body area networks (WBANs) become a key element in electronic healthcare (e-healthcare) systems, the coexistence of multiple mobile WBANs is becoming an issue. The network performance is negatively affected by the unpredictable movement of the human body. In such an environment, inter-WBAN interference can be caused by the overlapping transmission range of nearby WBANs. We propose a link scheduling algorithm with interference prediction (LSIP) for multiple mobile WBANs, which allows multiple mobile WBANs to transmit at the same time without causing inter-WBAN interference. In the LSIP, a superframe includes the contention access phase using carrier sense multiple access with collision avoidance (CSMA/CA) and the scheduled phase using time division multiple access (TDMA) for non-interfering nodes and interfering nodes, respectively. For interference prediction, we define a parameter called interference duration as the duration during which disparate WBANs interfere with each other. The Bayesian model is used to estimate and classify the interference using a signal to interference plus noise ratio (SINR) and the number of neighboring WBANs. The simulation results show that the proposed LSIP algorithm improves the packet delivery ratio and throughput significantly with acceptable delay.

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An Interference-Aware Traffic-Priority-Based Link Scheduling Algorithm for Interference Mitigation in Multiple Wireless Body Area Networks

Cited by 14 publications

References 28 publications

An Optimal Backoff Time-Based Internetwork Interference Mitigation Method in Wireless Body Area Network

An Optimal Backoff Time-Based Internetwork Interference Mitigation Method in Wireless Body Area Network

Hybrid Multi-Channel MAC Protocol for WBANs with Inter-WBAN Interference Mitigation

Link Scheduling Algorithm with Interference Prediction for Multiple Mobile WBANs

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