Technical and pricing study on private mobile radio and trunked radio systems in Singapore

Plum and Aegis advised the IDA on technical, pricing and other assignment approaches for addressing congestion issues in the 400 MHz and 800 MHz bands used to deploy trunked radio systems (TRS) and private mobile radio (PMR) networks in Singapore. The study examined the likely development of standards and availability of equipment for PMR and[…]

Future demand for M2M applications

A study undertaken with Machina and William Webb identified the likely future demand for M2M applications and the development of key standards. Comparisons were provided in terms of predicted demand between 2012 and 2022 for different sectors (for example health care, smart cities, intelligent buildings) between Singapore and the Asia-Pacific market. The study considered the different[…]

DTT signal strength variability measurements

The aim of the study was to gain a better understanding of radio signal variability in different clutter types in order to aid the modelling of potential coexistence issues with DTT using the UK DTT planning model.   Using our survey vehicle extensive measurements at different antenna heights and locations were carried out to gain detailed understanding[…]

Regulatory support for direct air-to-ground communication system

A number of sharing studies were undertaken to identify the potential to allocate 5855–5875 MHz for Broadband Direct-Air-to-Ground Communications (DA2GC).  One of the studies investigated adjacent band operation to radiolocation operating in the band 5250–5850 MHz.  The main radiolocation use is military and the analysis concentrated on fixed land-based, ship borne and transportable platforms operating[…]

Impact of building materials on radio waves

There is an increasing expectation that wireless services should be ubiquitously available, with seamless connectivity whether the user is indoors or outdoors.  It is therefore important that the impact of buildings on the propagation of radiowaves be understood and reliably characterised.  Although many measurements have been made over the decades, it is not always easy[…]

Interference studies in the 2.3 GHz band

MOD had been considering the implications of clearing spectrum for release in the 2.3 GHz bands.  This involved not only re-planning the frequency use of existing and future MOD systems but also consideration of the potential for interference to and from these systems with respect to anticipated use of the released spectrum, namely LTE.  These studies provided[…]

Spectrum allocation strategy and spectrum fees

The study addressed the various options for the allocation of spectrum ranging from directed awards through to auctions and considered the typical services for which each approach might be applicable.  In addition methods adopted for renewal and reassignment (migration) of existing were provided and also information on introduction of secondary trading.  In addition the use of spectrum[…]

Sharing between IMT and DTT

This study considered the feasibility of co-channel co-existence between IMT and DTT systems operating in the 470 – 694/698 MHz band. The study focussed on the impact of interference from IMT into DTT systems. Due to relatively high antenna gains, EIRP values and fixed antenna masts positioned above the clutter, the protection of DTT receivers[…]

Breathing apparatus telemetry interference

The study estimated the risk of interference into breathing apparatus telemetry systems operating at 862.9625 MHz used by the Fire and Rescue Services (FRS) in the UK.  The work undertaken fell into two parts; in the first part laboratory testing of breathing apparatus telemetry systems was undertaken to establish relevant interference limits while the second[…]