Stefano Testi

Stefano Testi

Greater London, England, United Kingdom
780 followers 500+ connections

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Experience

  • Google Graphic

    Google

    London Area, United Kingdom

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    London, United Kingdom

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    London, United Kingdom

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    London, United Kingdom

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    Farnborough, UK

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    Farnborough, UK

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Education

  • Università di Trento Graphic

    Università di Trento

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    - Graduated on January, 29th, 2010
    Final Grade: 106/110
    Thesis in Networking area, “Autonomous Channel Assignment in Multiradio Wireless Mesh Network: Design and Implementation over an 802.11-based Testbed”. Advisor: Prof. F. Granelli, PhD. Co-advisor: R. Riggio, PhD, D. Miorandi, PhD.

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    - Graduated on February, 22nd, 2007
    Final Grade: 101/110
    Thesis in Networking area, “Development of an indoor localization system through WLAN signals”. Advisor: Prof. F. Granelli, PhD.

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    Activities and Societies: CineMarconi

Licenses & Certifications

Publications

  • Interference and traffic aware channel assignment in WiFi-based wireless mesh networks

    Ad Hoc Networks Journal, Elsevier, Volume 9, Issue 5, July 2011, Pages 864-875

    Wireless mesh networks (WMN) typically employ mesh routers that are equipped with multiple radio interfaces to improve network capacity. The key aspect is to cleverly assign different channels (i.e., frequency bands) to each radio interface to form a WMN with minimum interference. The channel assignment must obey the constraints that the number of different channels assigned to a mesh router is at most the number of interfaces on the router, and the resultant mesh network is connected. This…

    Wireless mesh networks (WMN) typically employ mesh routers that are equipped with multiple radio interfaces to improve network capacity. The key aspect is to cleverly assign different channels (i.e., frequency bands) to each radio interface to form a WMN with minimum interference. The channel assignment must obey the constraints that the number of different channels assigned to a mesh router is at most the number of interfaces on the router, and the resultant mesh network is connected. This problem is known to be NP-hard. In this paper we propose a hybrid, interference and traffic aware channel assignment (ITACA) scheme that achieves good multi-hop path performance between every node and the designated gateway nodes in a multi-radio WMN network. ITACA addresses the scalability issue by routing traffic over low-interference, high-capacity links and by assigning operating channels in such a way to reduce both intra-flow and inter-flow interference. The proposed solution has been evaluated by means of both simulations and by implementing it over a real-world WMN testbed. Results demonstrate the validity of the proposed approach with performance increase as high as 111%.

    Other authors
    • Roberto Riggio, Tinku Rasheed, Stefano Testi, Fabrizio Granelli, Imrich Chlamtac
    See publication

Honors & Awards

  • Qualstar - A Recognition & Reward Program for Exceptional Contributions

    Alan Wills, Customer Engineering EU (Farnborough, UK)

    For travelling to Germany at very short notice to support one of our important customers
    with an escalated issue which could have affected their future business. Your professional interactions
    with these customers was highly appreciated.

  • Qualstar - A Recognition & Reward Program for Exceptional Contributions

    Chetan Chakravarthy, QCT MST (San Diego, CA)

    Thanks for dedicated efforts in making the multi carrier demo successful! A world first, but several to come.

  • Qualstar - A Recognition & Reward Program for Exceptional Contributions

    Chandra Kumar, Customer Engineering EU Modem Lead (Farnborough, UK)

    Provided support to an extremely critical customer issue which was blocking TA in Spain.

  • Qualstar - A Recognition & Reward Program for Exceptional Contributions

    Prasanth Balaji, Corporate R&D (San Diego, CA)

    Excellent work for CPC/E-FACH field trial in Bratislava

  • Qualstar - A Recognition & Reward Program for Exceptional Contributions

    Mauro Lodolo, Technical Account Manager (Madrid, Spain)

    For your outstanding dedication and results achieved in the RACH-no-ACK issue. Thank you!

Languages

  • Italian

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  • English

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