The impact of node velocity diversity on mobile opportunistic network performance

Lin, Yaguang; Wang, Xiaoming; Zhang, Lichen; Zhang, Dan; Liu, Sen

doi:10.1016/j.jnca.2015.04.010

Cited by 14 publications

(8 citation statements)

References 33 publications

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“…Based on the existing random mobility models, the work in Ref. [83] proposed a new random mobility model including all random attributes. For rescue and emergency applications of the IoH, the work in Ref.…”

Section: ) Mobility Modelsmentioning

confidence: 99%

Health Monitoring Based on Internet of Medical Things: Architecture, Enabling Technologies, and Applications

et al. 2020

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Recently, wearable devices have got increasing popularity in wide applications in medical and disaster rescue efforts to ensure the health and safety of users, which facilitates the development of the Internet of Medical Things (IoMT). Due to the posture alteration and mobility of users, the topology of the IoMT changes frequently, which increases the difficulty for resource allocation and routing strategy. In this paper, we respectively probe into the health monitoring architectures of the IoMT for both individual and group, allowing the monitored users to move at will. Furtherly, combined with the diversity of disaster rescuers, we build an IoMT-based disaster rescuer health monitoring system with searchers, doctors and porters. For each application, we point out the enabling technologies and demonstrate the existing researches. It is worth noting that the complexity of environment and high mobility of rescuers increase the probability of route breakage. Thus, this paper creatively addresses effective routing repair solutions for route breakage in IoMT-based disaster rescuer health monitoring system by exploiting the mobility of rescuers. Finally, we forecast three most likely directions in the field of IoMTs. INDEX TERMS IoMT, health monitoring, individual, group, disaster rescuer.

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Section: ) Mobility Modelsmentioning

confidence: 99%

Health Monitoring Based on Internet of Medical Things: Architecture, Enabling Technologies, and Applications

et al. 2020

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“…The effectiveness of OppNets depends mainly on users' mobility. The dependence between mobility and the performance of OppNets have been studied extensively, see for example [7,[14][15][16][17]. For example, Garg et.…”

Section: Related Workmentioning

confidence: 99%

How Human Mobility Models Can Help to Deal with COVID-19

Hernández-Orallo

Armero-Martínez

2020

Electronics

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One of the key factors for the spreading of human infections, such as the COVID-19, is human mobility. There is a huge background of human mobility models developed with the aim of evaluating the performance of mobile computer networks, such as cellular networks, opportunistic networks, etc. In this paper, we propose the use of these models for evaluating the temporal and spatial risk of transmission of the COVID-19 disease. First, we study both pure synthetic model and simulated models based on pedestrian simulators, generated for real urban scenarios such as a square and a subway station. In order to evaluate the risk, two different risks of exposure are defined. The results show that we can obtain not only the temporal risk but also a heat map with the exposure risk in the evaluated scenario. This is particularly interesting for public spaces, where health authorities could make effective risk management plans to reduce the risk of transmission.

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“…where λ j,D is the average encounter frequency that node v j meets the destination node of message m in unit time and R TTL is the residual TTL value of message m (m ∈ M), which can be calculated by the following Eq. (12).…”

Section: Determining Whether To Broadcast Message M At Presentmentioning

confidence: 99%

“…Additionally, by utilizing the opportunities of nodes' encounter and the short-distance wireless communication capability of mobile intelligent devices, nodes can establish temporary communication links between them and then exchange messages with higher transmission rate [21]. Furthermore, the entire transmission process does not require the support of the communication infrastructures and the phased multi-hop message forwarding is implemented in a "store-carry-forward" paradigm, which can effectively alleviate the current pressure of mobile big data faced by the communication infrastructures [3,4,12,15]. Therefore, MONs will have broad application and can be widely deployed and applied in many fields, such as the intelligent transportation, intelligent medical treatment, and disaster rescue in the near future [1].…”

Section: Introductionmentioning

confidence: 99%

A novel energy-efficient probabilistic routing method for mobile opportunistic networks

Zhao

Zhang

Wang

et al. 2018

J Wireless Com Network

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In mobile opportunistic networks (MONs), a large number of intelligent devices carried by moving people can conduct message transmission without the support of communication infrastructures. Routing is one of the concerning and challenging research hotspots in MONs because of nodes' mobility, intermittent connectivity, limited nodes' energy, and the dynamic changing quality of the wireless channel. However, only one or several of the above factors are considered in most current routing methods. Moreover, owing to the high mobility of nodes, it is particularly important to decide the time when to make the forwarding decision and which nodes can be selected as the relay nodes. Additionally, due to the dynamic changing quality of the wireless channel, the predetermined relay nodes for the next hop may not receive the message. In this paper, we propose a novel energy-efficient probabilistic routing method for MONs, in which energy and mobility of nodes and the quality of wireless channel are all taken into account. Firstly, we explore the regularity of nodes' mobility and the encounter probability among nodes to decide the time when to forward messages to other nodes. Secondly, by maintaining the energy fairness among nodes, the network lifetime can be prolonged. Thirdly, by fully taking the dynamic changing quality of the wireless channel into consideration, the retransmission number of messages can be effectively reduced. Additionally, we adopt a forwarding authority transfer policy for each message, which can effectively control the number of replicas for each message. The extensive simulation results show that the proposed method outperforms the existing routing algorithms in terms of the delivery ratio and the overhead ratio.

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The impact of node velocity diversity on mobile opportunistic network performance

Cited by 14 publications

References 33 publications

Health Monitoring Based on Internet of Medical Things: Architecture, Enabling Technologies, and Applications

Health Monitoring Based on Internet of Medical Things: Architecture, Enabling Technologies, and Applications

How Human Mobility Models Can Help to Deal with COVID-19

A novel energy-efficient probabilistic routing method for mobile opportunistic networks

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