Showing posts with label Tutorial. Show all posts
Showing posts with label Tutorial. Show all posts

Monday, 21 August 2023

'Story of the Edge' by Akamai

People share some useful stuff on social networks that I bookmark to visit and write later. This was shared by John Francis Nolan nine months back or so. I have just managed to watch it and definitely worth a share here.

Prof. Ramesh K. Sitaraman is currently a Distinguished University Professor and the Associate Dean for Educational Programs and Teaching in the College of Information and Computer Sciences at the University of Massachusetts at Amherst.  He is best known for pioneering content delivery networks (CDNs) and edge computing services that currently deliver much of the world’s web, videos, edge applications, and online services. As a principal architect, he helped create the Akamai network, the world’s first major content delivery network (CDN) and edge computing service. He retains a part-time role as Akamai’s Chief Consulting Scientist. 

Late last year he delivered a talk 'Living on the Edge for a Quarter Century: An Akamai Retrospective' on The Networking Channel. The following is the abstract of the talk:

As Akamai and the creation of the “edge” turn 25, we look back at the key role that the edge has played in the evolution of internet services. The story of the edge starts in the late 1990s when servers were deployed worldwide to provide content delivery services for web pages and videos. The quest to move dynamic content and application logic closer to users created the first edge computing services a few years later. The growth of the edge that now spans thousands of locations has dramatically increased the scope and importance of services that critically rely on it. This has created new challenges in operating the edge at scale and securing it from sophisticated attacks. Further, as the carbon footprint of the edge grows rapidly, reimagining a sustainable “zero-carbon” edge that is powered by renewable energy poses a key direction for future research.

His talk is embedded below and the PDF copy of his presentation is available here.

You can view the author's publication page here.

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Friday, 26 February 2021

Samsung and Ericsson Talks Massive MIMO


Massive MIMO is a fascinating topic. First is that there is no end to learning about it and secondly, the more information I put out, the more hunger people have about it. In the recent months there have been quite a few product announcements on the topic so we thought, why not do a blog post on it. 

Before we start, why not look at Massive MIMO and Beamforming. Mpirical has a short and sweet video explaining it. It is embedded below.

The video discusses four main topic areas: Beamforming vs Spatial Multiplexing, Beam Creation and Steering, Massive MIMO and finally MIMO Panel Antennas.

Now that we have refreshed the concept, let's look at what the product announcements were. 

The first was this blog post by Ericsson on 'How to build high-performing Massive MIMO systems' where they talked about how Ericsson has mastered the Art and Science of Massive MIMO to both unleash the full capacity benefits and extend the coverage of the new 5G mid-band spectrum - bringing outstanding user experience today, and setting the stage for the advanced applications of tomorrow.

The post starts with the 101 of radio physics, then talks about “Outsmarting” physics with Massive MIMO and Beamforming and finally it talks about the secret sauce in Ericsson AAS (Advanced Antenna Systems). The tweet below shows a practical Massive MIMO antenna and how it works.

In addition, Ericsson announced an "ultra-light Massive MIMO radios and RAN Compute baseband solutions." You can read all about it on their Massive MIMO page here and in the Tweet below.

The second was a press release by Samsung announcing Massive MIMO Roadmap in New Whitepaper, which is available here.

The following video shows world's 1st commercial 5G Massive MIMO Radio by Samsung

As the deployments start ramping up, we will see more product announcements on these. The main challenge that needs solving is the huge amount of power consumption. Probably a year or two before we see a breakthrough.

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Monday, 4 March 2019

T-Mobile USA: Anatomy of A Mobile Wireless Network


T-Mobile has a nice educational video on what makes a network looking at backhaul, small cells, etc. I have posted about T-Mo small cells here and here before. I have also pointed out that the definition of Small cells varies from country to country and USA is no exception. In the USA, RRH's are often referred to as small cells due to their small form factor but I disagree. You can see this earlier post on Macrocells, Small Cells & Hetnets Tutorial.

Here is the video on the anatomy of a mobile wireless network.

Wireless: Anatomy of A Network from T-Mobile National Development on Vimeo.