Nenad Gligoric

M2M device management in LTE networks

The driving concept of device management in M2M systems is establishment of a comprehensive end-to-end resource oriented design. In this paper, OMA-DM protocol for device management of M2M devices in 3GPP LTE networks is proposed and discussed. The OMA-DM represents a stable starting point for device management. Utilization of this protocol in M2M requires efficient message formats and transport replacement such as CoAP, Core Link Format, EXI, etc. The additional wake up mechanisms should also be considered for managing the stand by policies.

Application-layer security mechanism for M2M communication over SMS

With an increasing number of M2M devices communicating over SMS, the need for security was raised because standard SMS messaging service does not provide any light-weight security mechanisms. In this paper we propose hybrid application-layer security with compression for M2M communication over SMS. The signature is calculated using device IMEI, secret key and payload; thus signature is not always the same, which prevents duplicated/stolen signature and replay attack and it provides a content integrity check. The security is implemented on android powered mobile devices and evaluated against non-secure payload for message response time and bandwidth in live GSM network. Evaluation shows that SMS delivery time is not influenced by this security mechanism. In addition compression can save bandwidth for more verbose and longer payloads.

CoAP over SMS: Performance evaluation for machine to machine communication

M2M devices can be deployed at various, often not easy to access locations like rural areas, high on the buildings or on moving vehicles. Mobile networks provide connectivity to such devices over the existing infrastructure. This paper presents an implementation and evaluation of the SMS for M2M communication by utilizing CoAP message semantics. The CoAP is a high-layer protocol that strives to become a standardized solution for M2M communication, and as such is interesting for related activities. The evaluation of regular, concatenated and multicast SMS transport shows that increased SMS traffic can lead to longer delivery time. This may not be a concern for M2M devices that are usually sensors with long sleeping cycles; but for other M2M scenarios that requires higher throughput, higher data rates can be achieved by agreeing over specific SLA with Service Provider.

OMA DM v1.x compliant lightweight device management for constrained M2M devices

This paper presents Exalted Lightweight For Open Mobile Alliance Device Management (OMA DM) v1.x, an alternative lightweight solution that is fully compatible with the current OMA DM protocol and with all existing OMA Management Objects. This solution aims to enable operators and service providers to leverage their existing OMA DM servers to continue supporting current OMA DM enabled mobile devices and to incrementally support new constrained machine to machine devices through an added proxy server. Exalted Lightweight For Open Mobile Alliance Device Management v1.x reduces the size of OMA DM messages by 89% while optimizing the processing performance and resource consumption. Copyright © 2013 John Wiley & Sons, Ltd.

SocIoTal — The development and architecture of a social IoT framework

This paper presents the development and architecture of the SocIoTal platform. SocIoTal is a European FP7 project which aims to create a socially-aware citizen-centric Internet of Things infrastructure. The aim of the project is to put trust, user-control and transparency at the heart of the system in order to gain the confidence of everyday users and developers. By providing adequate tools and mechanisms that simplify complexity and lower the barriers of entry, it will encourage citizen participation in the Internet of Things. This adds a novel and rich dimension to the emerging IoT ecosystem, providing a wealth of opportunities for the creation of new services and applications. These services and applications will be able to address the needs of society therefore improving the quality of life in cities and communities. In addition to technological innovation, the SocIoTal project sought to innovate the way in which users and developers interact and shape the direction of the project. The project worked on new formats in obtaining data, information and knowledge. The first step consisted of gaining input, feedback and information on IoT as a reality in business. This led to a validated iterative methodology which formed part of the SocIoTal toolkit and a best practices guide for local policy makers and cities.

Making Onlife Principles into Actionable Guidelines for Smart City Frameworks and #IoT Policies

The EU project SocIoTal research identified the following as main barriers to broad IoT adoption in ‘smart’ cities: (i) lack of understanding by SME’s and City Councils, (ii) lack of third-party trust providers and (iii) lack of involvement of end users in building use cases and developing new services. The project conceived the following measures to overcome them: meetups, to address the lack of understanding introducing research questions and listening to the local stakeholders, and co-creation workshops to involve citizens from the city of Novi Sad in Serbia together with researchers from University of Cantabria, Santander. These measures and solutions warrant an ethical framework to inform and educate decision-making regarding #IoT system architectural options, and the Onlife Manifesto and initiative of the European Commission might be relevant in this context.