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Showing posts from May, 2020

Lynk Sends Message From Space using LEO Satellite

We have seen on this blog many different companies working to beam ordinary 4G/5G from satellites to space. One new company that came to my attention is Lynk Global (Lynk) that plans to do something similar using nano satellites from the space. To their credit, they have just transmitted an SMS from a LEO satellite to a normal, unmodified mobile phone.


Their website says:

Lynk’s business is to provide everywhere connectivity directly to the existing 5.2 billion mobile phone users on the planet, and to billions more who will now have a compelling reason to buy a mobile phone.

Today’s mobile phone users pay more than $1 trillion a year in total for service. Yet on average, at any given moment, about 750 million phone owners have no connectivity because they live, work or travel outside the range of a ground-based cell tower. Another 2.5 billion people don’t have phones, many because they lack affordable connectivity. The economics of ground-based cell towers make it cost prohibitive to e…

R&S Technical Explainer on 3GPP 5G Non Terrestrial Networks (NTN)

I have explained Non Terrestrial Networks (NTN) earlier here and have written a detailed article here. The initial 3GPP Release-15 version of 3GPP TS 22.261 added the initial requirement that the 5G system will be able to provide services using satellite access. A study was carried out by 3GPP as a part of 3GPP Release-16 and the results of the study on using satellite access in 5G networks have been documented in 3GPP TR 22.822. The document details the use cases, pre and post conditions, service flows, potential impacts / interactions with existing services / features and potential requirements based on the use case. The results from this technical report (TR) were then reflected in 3GPP Release-16 version of 3GPP TS 22.261. The document details the need for the 5G system to support service continuity between terrestrial 5G access and satellite based 5G access networks, owned by either the same operator or by an agreement between operators.

3GPP Release 17 will bring some interesti…