Status of 5G field trials for connected and autonomous vehicles in Europe and North America

Plum produced a report for the Telecom Technology Center on the status of field trials involving connected and autonomous vehicles (CAVs) in Europe and North America. The report provided a selection of case studies involving the use of cellular technology (4G/5G) in developing: vehicle-to-everything technologies enabling interaction with infrastructure, other vehicles, networks and pedestrians; and[…]

Cross border considerations

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[…]

Facebook V-band study

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[…]

Coexistence of terrestrial and satellite services at 26 GHz

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[…]

Support on 400 MHz spectrum

Plum Consulting provided support to ComReg on their proposed release of the 410-415.5 / 420-425.5 MHz sub band. In particular Plum considered the potential uses of the spectrum including further spectrum for PMR, PPDR, smart metering, IoT networks and smart grids. The study considered spectrum requirements for the different services and availability of other frequencies.[…]

Plum Insight: Maximising spectrum efficiency with private LTE

Despite continuing growth in mobile network coverage, there are many areas where enterprise users suffer from no, or poor, connectivity. Manufacturing, agricultural and transport industries in these regions suffer from their remote locations, and they often find that their ability to benefit from Industry 4.0 – the automation through connected machines – is limited. This[…]

Reassignment of 900 MHz and 1800 MHz in Hong Kong

This study for the Office of the Communications Authority (OFCA) provided an independent assessment of the impacts on service quality arising from reassignment of 900 MHz and 1800 MHz spectrum in Hong Kong. The assessment model developed by Plum analysed the network infrastructure requirements of mobile network operators under various market, technology evolution and spectrum[…]