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Journal of Ambient Wireless Communications and Smart Environments (AMBIENTCOM)

Editor-in-Chief: Fernando José Velez, Instituto de Telecomunicações Departamento de Engenharia Electromecânica / Universidade da Beira Interior, Portugal


ISSN: 2246-3410 (Print Version),

ISSN: 2246-3429 (Online Version)
Vol: 1   Issue: 1

Published In:   July 2015

Publication Frequency: Triannual

Search Available Volume and Issue for Journal of Ambient Wireless Communications and Smart Environments (AMBIENTCOM)


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Smart Cloud of Things: An Evolved IoT Platform for Telco Providers

doi: 10.13052/ambientcom2246-3410.111
Mário Antunes, João Paulo Barraca∗, Diogo Gomes, Paulo Oliveira and Rui L. Aguiar

Instituto de Telecomunições, Aveiro, Portugal
DETI, Universidade de Aveiro, Aveiro, Portugal

Abstract: [+]    |    Download File [ 1918KB ]   |    Read Article Online

Abstract: Although many environments are powered by smart solutions, users do not have a simple way to gather their collective knowledge and program devices’ behaviour. Telecommunication (Telco) providers wish to act as the facilitator, but still lack proper components for enabling integrated services over their networks, even though this work is already in active standardisation. In this work we present the architecture of a IoT solution developed in close collaboration with Telco providers, its evolution, which we call SCoT (Smart Cloud of Things), and the best practices from the several pilots we have been running. The architecture builds upon ETSI standards, combined with a rich service execution environment, providing facilitated orchestration of services and devices, as well as integrated portals for end users access.

Keywords: IoT, IoS, Service Orchestration, Telco, M2M.

Resource Allocation in Wireless Mesh Networks

doi: 10.13052/ambientcom2246-3410.112
M. Priesler (Moreno) and A. Reichman

Ruppin Academic Center, Emek Hefer, 40250 Israel

Abstract: [+]    |    Download File [ 3767KB ]   |    Read Article Online

Abstract: A wireless network with a mesh topology works reliably and offers redundancy. In modern broadband wireless mesh networks using MIMO and OFDMA techniques, the problems of time, frequency, and space resource allocations, synchronization, and routing, are not only different from a cellular system, they are more complicated due to system architecture and distributed control and management. This paper focuses on OFDMA wireless mesh network systems and the problem of time/frequency resource allocation, particularly with regard to subcarriers.

The term of separability order is defined. For simple topologies such as the square grid configuration, the allocations are relatively simple, and optimal solutions can be demonstrated, but in an arbitrary architecture advanced graph theory tools are required in order to present an algorithmic solution to resource allocation and allow frequency reuse.

Keywords: Wireless mesh networks, OFDMA, resource allocation, subcarrier allocation, graph colouring, graph theory, graph algorithms.

River Publishers: Journal of Ambient Wireless Communications and Smart Environments (AMBIENTCOM)