Opportunistic Mobility Support for Resource Constrained Sensor Devices in Smart Cities

Granlund, Daniel; Holmlund, Patrik; Åhlund, Christer

doi:10.3390/s150305112

Cited by 5 publications

(4 citation statements)

References 31 publications

(54 reference statements)

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“…Additional interoperability needs to be provided when nodes want to connect outside of their home network. Granlund et al [19] proposed the use of two mechanisms for enabling secure sensor mobility between different administrative domains. Authors have drawn parallels with EduRoam where academic institutions all over the world are interconnected using the RADIUS [20] Authentication, Authorization and Accounting (AAA) protocol in a tree-like structure.…”

Section: Privacy and Securitymentioning

confidence: 99%

Seamless connectivity architecture and methods for IoT and wearable devices

Celić

Magjarević

2019

Automatika

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Wearable and Internet of Things (IoT) devices have the potential to improve lifestyle, personalize receiving treatments or introduce assisted living for elderly people. However, service delivery depends on maintaining and troubleshooting device connectivity to smartphones, where user engagement and technology proficiency represent a possible barrier that prevents a wider adoption, especially in the elderly and disabled population. Low-cost and low-power wearable and IoT devices face challenges when operating out of range of known home networks or pared devices. We propose an architecture and methods to provide seamless connectivity (Se-Co) between devices and wireless networks while maintaining low-power, low-cost and standards compatibility. Through Se-Co, the devices connect without user interaction both in home and in unknown roaming networks while maintaining anonymity, privacy and security. Roaming networks approve data limited connectivity to unknown devices that are able to provide a valid anonymized certificate of compliance and no harm through a home provider. Se-Co enables shifting data processing, such as pattern processing using artificial intelligence, from a wearable device or smartphone towards the cloud. The proposed Se-Co architecture could provide solutions to increase usability of wearable devices and improve their wider adoption, while keeping low the costs of devices, development and services.

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Section: Privacy and Securitymentioning

confidence: 99%

Seamless connectivity architecture and methods for IoT and wearable devices

Celić

Magjarević

2019

Automatika

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“…The signaling messages service times differ from each other because of their functionality and different length. (Granlund et. al., 2015) ∆ There is a dependence of the VHO time on the intensity of VHO requests.…”

Section: Numerical Experimentsmentioning

confidence: 99%

Modelling Of Vertical Handover From Untrusted WLAN Network To LTE

Grebeshkov¹,

Zaripova²,

Roslyakov³

et al. 2017

ECMS 2017 Proceedings Edited by Zita Zoltay Paprika, Péter Horák, Kata Váradi, Péter Tamás Zwierczyk, Ágnes Vidovics-Dancs, Ján

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Nowadays, operators offer telecommunication services at a very high level. For the support of the best quality of service it would be reasonable to implement a handover to another radio access network cell in the same territory, a so-called vertical handover (VHO), by transferring the user connection and IP session from the current access network to a new network. In this paper, we analyze vertical handovers from an untrusted WLAN network to an LTE network. This type of handover from an untrusted WLAN network is the most difficult because of the many nodes of an LTE network related to authorization and resource allocation. The paper includes a synthesis of the basic procedures for the session setup and LTE resource allocation. Unlike other papers, we represent a complicated VHO procedure as a sequence of at least 40 signalling messages from the discovery of a new network for the VHO to its full completion at the target LTE network. We also propose a vertical handover time estimation method for the said VHO procedure. We perform numerical experiments on realistic data.

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“…Opportunistic communications [ 1 , 2 , 3 , 4 , 5 ] are increasingly considered a promising Smart City enabling communication technology. They are applicable to situations when, for example, the cellular network infrastructure has become inefficient due to too many requests, or when no communication infrastructure is available at all [ 6 , 7 ] .…”

Section: Introductionmentioning

confidence: 99%

Friendly-Sharing: Improving the Performance of City Sensoring through Contact-Based Messaging Applications

Herrera-Tapia

Hernández-Orallo

Tomás

et al. 2016

Sensors

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Regular citizens equipped with smart devices are being increasingly used as “sensors” by Smart Cities applications. Using contacts among users, data in the form of messages is obtained and shared. Contact-based messaging applications are based on establishing a short-range communication directly between mobile devices, and on storing the messages in these devices for subsequent delivery to cloud-based services. An effective way to increase the number of messages that can be shared is to increase the contact duration. We thus introduce the Friendly-Sharing diffusion approach, where, during a contact, the users are aware of the time needed to interchange the messages stored in their buffers, and they can thus decide to wait more time in order to increase the message sharing probability. The performance of this approach is anyway closely related to the size of the buffer in the device. We therefore compare various policies either for the message selection at forwarding times and for message dropping when the buffer is full. We evaluate our proposal with a modified version of the Opportunistic Networking Environment (ONE) simulator and using real human mobility traces.

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Opportunistic Mobility Support for Resource Constrained Sensor Devices in Smart Cities

Cited by 5 publications

References 31 publications

Seamless connectivity architecture and methods for IoT and wearable devices

Seamless connectivity architecture and methods for IoT and wearable devices

Modelling Of Vertical Handover From Untrusted WLAN Network To LTE

Friendly-Sharing: Improving the Performance of City Sensoring through Contact-Based Messaging Applications

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