World Radio Conference 2023 Agenda Item 1.3 calls for studies to examine the feasibility of allocating 3600 – 3800 MHz band to the mobile service (except aeronautical mobile) on a primary basis in Region 1 (i.e. Europe, Middle East and Africa). The band is already allocated to the mobile service in Region 1 but on[…]
It is a well-known scientific fact, but one that is sometimes ignored, that radio waves do not respect borders between countries and geographic regions. This means that radio networks deployed in one country or region can cause interference to networks deployed across the border. The impact of the interference can vary considerably and in the[…]
Google developed a computer interface system based on hand/motion sensing radar operating in the 60 GHz band. Facebook have concerns that the use of such devices might cause interference to wideband data transmission systems operating in the same band (e.g. Wi-Gig). Plum were commissioned to review the technical studies on the issue, and draft a[…]
For the Australian Department of Communications and the Arts, Plum analysed technical conditions influencing spectrum sharing in the 26 GHz band between satellite services and mobile broadband including review of inputs into the WRC-19 process. Plum undertook a review of key sharing constraints proposed by the satellite operator and associated parameters, and assessed proposed technical[…]
Richard Rudd was the lead author for a paper on the development of the new ITU-R model for building entry loss. This paper describes the derivation and form of the new model and highlights work that remains to be done in this area. The ITU-R has recently published a new recommendation giving a method for[…]
Richard Rudd was the lead author for a paper on measuring clutter loss and building entry loss. The paper found that models and measurements exist for building entry loss and for loss due to local clutter. However, there appears to be less information on the combined effects of the two mechanisms. The paper reports on[…]
Richard Rudd, along with Maziar Nekovee of the University of Sussex, authored a paper on the propagation of millimetre-wave frequencies in urban clutter. The paper describes path loss measurements carried out at 27 GHz in London and Brighton. The primary purpose of the measurement campaign was to provide empirical support for the development of clutter[…]
mmWave is one of the new frequency ranges identified for use by 5G. This report by iDate and Plum considers the state of play and the prospects for the use of mmWave spectrum in the EU and identifies issues for demand, coexistence and authorisation of mmWave spectrum identified for 5G. While the report considers a[…]
Millions of devices – ranging from a large satellite to a tiny earphone – use the radio spectrum on a daily basis. Future mobile networks will require the radio spectrum for high-speed broadband services, low latency applications and massive machine type communications. There is also a mass use of Wi-Fi devices and sensors planned for[…]
Richard Rudd presented at the IET’s 2018 Colloquium on Antennas, Wireless and Electromagnetics conference, in Bristol. The main purpose of the presentation was to give an overview of the structure of, and current work within, ITU-R Study Group 3, concerned with radio wave propagation. The presentation can be accessed below.