WRC 2023 Agenda Item Details

Agenda Item: Agenda Item 1.18
Resolution(s): Resolution 248 (COM6/15) (WRC-19)
Description of work:

This agenda item is to consider studies relating to spectrum needs and potential new allocations to the mobile-satellite service for future development of narrowband mobile-satellite systems. The ITU-R is invited to:

  1. conduct studies on spectrum and operational requirements as well as system characteristics of low-data rate systems for the collection of data from and management of terrestrial devices in the MSS as described in the Resolution considering a) and limited to the basic characteristics in recognising c)
  2. to conduct sharing and compatibility studies with existing primary services to determine the suitability of new allocations to the MSS with a view to protecting the primary services in the following frequency bands and adjacent frequency bands: 1 695 - 1 710 MHz in Region 2, 2 010 - 2 025 MHz in Region 1, 3 300 - 3 315 MHz, 3 385 - 3 400 MHz in Region 2
  3. to consider possible new primary or secondary allocations, with the necessary technical limitations, taking into account the characteristics described in recognising c) to the MSS for non-GSO satellites operating low-data rate systems for the collection of data from, and management of, terrestrial devices based on the result of sharing and compatibility studies while ensuring protection of existing primary services in those frequency bands, and adjacent frequency bands, without causing undue constraints on their further developments

WRC-23 is invited to determine, on the basis of the studies conducted under the resolves to invite the ITU-R above, appropriate regulatory action

Comments: Recognising c) of Resolution 248 (COM6/15) (WRC-19) refers to systems with space stations that have a maximum EIRP of 27 dBW or less with a beamwidth of no more than 120 degrees and earth stations that individually communicate no more than once every 15 minutes for no more than 4 seconds at a time with maximum EIRP of 7 dBW. This AI is designed to support the development of the internet of things communicating via the MSS
Lead Working Party(s): WP 4C
Involved Working Parties: WP 3M, WP 4A, WP 4B, WP 5A, WP 5B, WP 5C, WP 5D, WP 7B
How Visualyse products can help: Visualyse Professional can model MSS and other services such as the mobile service, fixed service, fixed satellite service, radiolocation or meteorological services. A range of modelling methodologies can be used including static and dynamic including modelling of satellite orbits. Propagation models are available for space to space, space to Earth and terrestrial paths and Visualyse Professional can model both co-frequency and non-co-frequency interference scenarios. Visualyse includes traffic models that can be used to model bursts of communications from narrow band devices.
How Transfinite consultants can help: We can undertake studies including analysis of sharing between the different services covered by this agenda item including MSS, MS, FS, FSS, radiolocation or meteorological services. We can help identify suitable system characteristics and sharing criteria, and provide contributions and representation at ITU-R Working Parties. Using our in house Visualyse Professional we can quickly model a very wide range of systems, services and scenarios.
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