Link adaptation in unlicensed radio bands

J.C. Haartsen, George B.W. Schutter

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    Abstract

    This paper presents a new collaborative mechanism for efficient coordination of radio communication devices, in particular addressing the unlicensed ISM band at 2.4 GHz. As the traffic in the ISM band is increasing tremendously, the potential for interference between uncoordinated devices is becoming a problem and can result in severe degradation of the performance of these systems. Devices using the same technology can benefit from standardized QoS solution, as for example introduced in WLAN IEEE Some recent 802.11e [1]. But the unlicensed ISM typically supports heterogeneous networks using different technologies. Collaborative and non-collaborative mechanisms that have been proposed are designed only for some particular systems and are inefficient because they result in a lack of a spectrum map. The collaborative mechanism proposed in this paper enables spectrum coordination between multiple wireless devices using conventional radio standards such as IEEE WLAN 802.11x, Bluetooth, ZigBee, and so on. The proposed mechanism permits flexibility in spectrum sharing procedures, which can take into account more complex parameters and results in a more efficient spectrum allocation. The collaborative mechanism is based on a Shared Broadcast Control Channel (SBCH). The SBCH is a low rate signal using continuous phase modulation. Simulation results show that the SBCH signal can be generated by conventional transmitters and can be detected with conventional receivers.
    Original languageEnglish
    Title of host publicationProceedings of the 12th Annual Symposium of the IEEE/CVT on Communications and Vehicular Technology in the Benelux, SCVT 2005
    Place of PublicationEnschede, The Netherlands
    PublisherIEEE Aerospace and Electronic Systems Society
    Pages1-6
    Number of pages6
    ISBN (Print)90-365-2264-1
    Publication statusPublished - 3 Nov 2005
    Event12th Annual Symposium on Communications and Vehicular Technology in the Benelux, SCVT 2005 - Enschede, Netherlands
    Duration: 3 Nov 20053 Nov 2005
    Conference number: 12

    Conference

    Conference12th Annual Symposium on Communications and Vehicular Technology in the Benelux, SCVT 2005
    Abbreviated titleSCVT
    CountryNetherlands
    CityEnschede
    Period3/11/053/11/05

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