Browsing by Author "Farhang, Arman"

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    Multi-Operator Connectivity Sharing for Reliable Networks: A Data-Driven Risk Analysis
    Gomes, Andre; Kibilda, Jacek; Farhang, Arman; Farrell, Ronan; DaSilva, Luiz A. (IEEE, 2021-09-01)
    A key distinction between today's and future networks is the appetite for reliable communication to support emerging critical-communication services. In this paper, we study multi-operator connectivity as a form of redundancy to support the design of reliable networks and investigate its trade-offs. This approach is motivated by 3GPP standardisation initiatives of dual-connectivity and similar techniques in industrial wired networks. We deploy a risk awareness performance metric to assess reliability: this superquantile metric accounts for periods of connectivity shortfalls. Our analysis shows that multi-operator connectivity brings significant reliability gains, in particular when network deployments by different operators exhibit high complementarity in coverage. We also explore the effects of multi-connectivity on spectral efficiency in times of high demand for bandwidth. Our study is based on a real-world dataset comprising signal strength indicators of three mobile operators in Dublin, Ireland.
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    Network Sharing for Reliable Networks: A Data-Driven Study
    Gomes, Andre; Kibilda, Jacek; Farhang, Arman; Farrell, Ronan; DaSilva, Luiz A. (IEEE, 2020-01-01)
    The next generation of mobile networks will bring an appetite for reliable communication, which enables emerging critical-communication services. In this paper, we present network sharing between operators as a way to provide increased reliability while using the already existing mobile network infrastructure. Our results indicate that network sharing significantly improves network performance during periods of connectivity shortfalls, benefiting the design of reliable networks. Our conclusions are drawn from a real-world dataset of signal quality indicators for three mobile operators in Dublin, Ireland.