Connectivity Technology Blog

Last week, OneWeb announced that they have successfully launched another 36 Low Earth Orbit (LEO) satellites thereby bringing its total in-orbit constellation to 146 satellites. These will form part of OneWeb’s 648 LEO satellite fleet that will deliver high-speed, low-latency global connectivity. In a written evidence submitted to the UK parliament back in May 2020, it said : OneWeb is deploying the first satellite communication network with 5G features capable to deliver fibre-like connectivity to people around the world, especially in rural and hard to reach areas, powered by a constellation of Low Earth Orbit satellites. 5G ready, at low latency and providing global coverage, OneWeb will be the first telecommunication operator to bring high speed internet everywhere. Its communications network will offer game-changing Mobility solutions to industries that rely on global connectivity, such as Aviation, Maritime, Automotive and create solutions for Broadband, Government and Cellular B...

Fixed Wireless is one of the recurring topics on our blogs (see links to other posts at the end). Now GSMA Intelligence has just released a playbook on this topic. The executive summary says: One of the most interesting potential applications of 5G is in providing access to home broadband, through fixed wireless access (FWA). This hybrid approach combines aspects of traditional mobile and fixed-line delivery methods but is primarily marketed as a ‘home’ internet product. FWA offers the principal advantages of (generally) lower upfront deployment costs relative to fixed options, and capital efficiency gains through the reuse of existing spectrum holdings. The technology has been around for more than a decade through the 3G and 4G eras, particularly in serving rural areas that lack fixed broadband access or have low speeds. At the end of 2020, 492 mobile operators (approximately 50% of the sector) had launched 4G FWA services, with varying levels of ambition. 5G will enable FWA to targe...

As 5G drives disaggregation of the RAN, it is vital that operators understand the new options that will emerge for their transport networks. Late last year, Omdia hosted a webinar looking at how optical, Ethernet, and routing technologies are evolving to support 5G. The participants included: Richard Webb, Director, Research and Analysis, Service Provider Technology, Omdia Daniel Gonzalez, Business Development Manager, Anritsu Joseph Mocerino, Principal Solutions Architect, Optical Networking, Fujitsu Network Communications, Inc. Tim Doiron, Sr. Director, Solution Marketing, Infinera Allen Tatara, Senior Manager, Webinar Events, Omdia (Moderator) The following were key topics of discussion Migrating to 5G X-haul architecture for Stand-alone (SA) and Non-Standalone (NSA) deployments: requirements, challenges, and roadmaps Building a transport solutions toolkit that maximizes performance while lowering operation expense Evaluating Open RAN initiatives and potential impacts on transport H...

Having worked with the satellite industry many years back, we spent a lot of discussing orbits, rollouts, spectrum, business case, etc. Starlink was the company we heard least from, at least in events, conferences, webinars, etc. The interesting thing is that Starlink is already delivering the results while others are still be debating the details and are yet to deliver the output.  SpaceX has just successfully deployed another 60 Starlink satelllites to orbit. 250 satellites have been deployed in 2021 so far, bringing the total number of Starlinks in orbit to 1,141. This is another potentially trillion dollar venture by @elonmusk built in plain sight. pic.twitter.com/Eer4SxOTNr — Remo Uherek (@remouherek) March 4, 2021 With 250 satellites already deployed in 2021, the total number of satellites have reached to 1,141. The eventual aim is to have over 40K satellites.  During the beta period, Starlink customers can expect data speeds between 50Mbps and 150Mbps with latencies ...

In an issue of Signals Flash by Signals Research Group (SRG), they talked about 2 different types of MIMO. Quoting from their journal, "CSI-RS versus SRS. Those operators that have tested or made token use of MU-MIMO leverage a flavor of MU-MIMO that is based on CSI-RS. The MU-MIMO network we tested was based on SRS, which makes it far more likely to observe sixteen spatial layers (versus eight)." I reached out to Emil Björnson, Visiting Professor at KTH Royal Institute of Technology and Associate Professor at Linköping University to see if he has explained this in any of his videos. Here is what he said: " I'm not talking about 3GPP terminology in any of my videos. But you can listen to the slides that starts around 12:40 in this video (embedded below) . If you are looking for CSI-RS vs SRS based MU-MIMO, then jump to around 12:40 in this video where you can see CSI-RS being referred to as "grid of beams" and SRS is similar to the other option, which is t...