To Hop or Not to Hop: Network Architecture for Body Sensor Networks

Natarajan, Anirudh Raju; Silva, Buddhika de; Yap, Kok-Kiong; Motani, Mehul

doi:10.1109/sahcn.2009.5168978

Cited by 63 publications

(32 citation statements)

References 6 publications

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“…The work presented in [47] was the first attempt to point the benefits of using multi-hop communications in wireless body area networks (WBAN). Later, Natarajan et al experimentally investigated the impact of network topology on the average number of retransmissions, network lifetime [48] and packet delivery ratio [49]. They concluded that the multi-hop strategy is more reliable especially in outdoor settings.…”

Section: Routingmentioning

confidence: 99%

“…Indeed, all existing WSN for rehabilitation adopted a star topology with one-hop communications between each node and the gateway. However, there are evidence that multi-hop communications can be better than one hop communications in several cases [48] [49]. Thus, multi-hop communications should be used in rehabilitation applications and their performance should be investigated.…”

Section: Routingmentioning

confidence: 99%

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Wireless sensor networks for rehabilitation applications: Challenges and opportunities

Hadjidj¹,

Souil²,

Bouabdallah³

et al. 2013

Journal of Network and Computer Applications

139

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Rehabilitation supervision has emerged as a new application of wireless sensor networks (WSN), with unique communication, signal processing and hardware design requirements. It is a broad and complex interdisciplinary research area on which more than one hundred papers have been published by several research communities (electronics, bio-mechanical, control and computer science). In this paper, we present WSN for rehabilitation supervision with a focus on key scientific and technical challenges that have been solved as well as interdisciplinary challenges that are still open. We thoroughly review existing projects conducted by several research communities involved in this exciting field. Furthermore, we discuss the open research issues and give directions for future research works. Our aim is to gather information that encourage engineers, clinicians and computer scientists to work together in this field to tackle the arising challenges.

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Section: Routingmentioning

confidence: 99%

Section: Routingmentioning

confidence: 99%

Wireless sensor networks for rehabilitation applications: Challenges and opportunities

Hadjidj¹,

Souil²,

Bouabdallah³

et al. 2013

Journal of Network and Computer Applications

139

View full text Add to dashboard Cite

show abstract

“…Natarajan [3][4] investigated the impact of network architecture and in particular how to maximize the end-to-end Packet Delivery Ratio (PDR) and minimize the number of retransmissions in multihop networks. However the experiments were designed in the way that the interval between the transmission of each node is 8 seconds.…”

Section: Related Workmentioning

confidence: 99%

1 Hop or 2 hops: Topology analysis in Body Area Network

Franco

Tinnirello

2014

2014 European Conference on Networks and Communications (EuCNC)

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Abstract-Wireless Body Area Networks (WBANs) have recently received much attention due to the possibility to be used in healthcare applications. For these applications, link reliability and energy efficiency are critical issues, as in many cases, information carried can be vital for the patient and batteries cannot be easily replaced. The wireless on-body channel experiences significant temporal variation due to body movements and the use of relays is sometimes necessary in order to guarantee reliability or improve lifetime.In this paper, an experimental evaluation is used to give a better understanding about reliability, energy consumption and lifetime in a single hop or a two hops communication. This analysis keeps into consideration the correlations between propagation on different links which affect simultaneously the time-varying connectivity on different links of the body. The results shows that an off-body relays could be used to increase data reliability, minimize energy requirements and maximize network lifetime.

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“…BAN components are typically less than 2 m from each other since they are positioned on a human body. Authors in [15] experimentally show that a BAN with a star topology achieves a PDR greater than 90% in diverse environments when body nodes operate with −10 dBm transmission power, in the absence of interference. In the presence of collocated networks, especially those operating with much higher transmit power, it is reasonable to assume that all wireless links within a BAN are equally affected by interference and there is no differentiation between individual components or links regarding the level of interference experienced by them.…”

Section: B Architectural Designmentioning

confidence: 99%