In 2016, G.fast looked very promising.
Thousands worked at developing and deploying.
It wasn't enough.
Most carriers are investing
in fiber or 5G instead.
Dark Blue: Firm commitments from incumbent: BT (10M), Belgacom, Australian NBN, Swisscom, Austria, Bezeq Israel, Chunghwa Taiwan, Telus Canada, Telekom South Africa, SK Korea, (U.S.) AT&T, Century, Frontier, Windstream, Belgium, Omantel
Mid Blue: Smaller carriers in Germany, Norway, Finland, Japan
- Published: 14 October 2016 14 October 2016
Until now, only coax allowed individual speeds to be modified. G.fast allows changing the downstream/upstream ratio from 90/10 to 10/90. While most of the time higher downstreams are better, Sckipio has demonstrated 750 up. Before DTA, you could only deliver at a fixed ratio to all the customers connected to a DPU; the first DTA systems, from Adtran and Calix, only worked on low-interference lines, either coax or an isolated pair of phone lines. In Booth 20D at BBWF, Sckipio and Calix will have a live demo of Collective dynamic time assignment, their name for DTA over twisted pair in a typical binder. I have unofficially seen some test results; they look good.
When I first saw DTA, I immediately knew why I wanted it. I need faster upstream because we're backing up terabytes of Jennie's video footage to Amazon's unlimited cloud. At $55/year, that's a great deal. I've spent two months so far at Time Warner's top speed of 20 megabits, 200 down. I'd much rather have 75/75, but FiOS doesn't come to my building. If we had 500 megabits from fiber to my basement, I could have 100 down and 400 up. If my neighbor installed 12 virtual reality headsets for gaming friends, she might prefer 400 down, 100 up. (Wish I had the speed today.)
Rami Verbin of Sckipio told me a while back he was working on this, but I didn't expect it to be working so soon. It requires brilliant mathematics for signal processing and state of the art electronics.
Calix writes me, "Close coordination between both us resulted in the ability to push G.fast further. We've added DTA support for the higher density, higher-crosstalk environments that arise when twisted pair bundles are present and traffic goes both ways. There are all sorts of problems here. With dynamic time assignment the crosstalk can originate at either end, and is stronger at the source than the received end – so quite a lot of calculations have to go on to cancel it all. The Sckipio system analyzes traffic across all the ports and optimizes performance for the entire DPU system.
Here's the pr; I'll be doing a sponsored email for them soon with more details.
SCKIPIO AND CALIX INTRODUCE COLLECTIVE DYNAMIC TIME ASSIGNMENT FOR G.FAST
Quantenna Announces World’s First 802.11ax Wi-Fi Solution
New QSR10G-AX Access Point Product Supports Latest 802.11ax Draft 1.0 Specification
London, Quantenna Communications, a leader in ultra-high performance Wi-Fi, today announced the industry’s first 802.11ax product called QSR10G-AX. This product is built on Quantenna’s QSR10G Wave 3 Wi-Fi platform and adds support for the draft 1.0 of the IEEE specification 802.11ax standard.– BBWF 2016 –
As Wi-Fi usage continues to grow, the Wi-Fi 802.11 IEEE standard evolves to cope with the augmented complexity of Wi-Fi networks. 802.11ax was designed with the goal of increasing Wi-Fi networks efficiency in dense deployments such as multi-dwelling units. In addition, it improves Wi-Fi network capacity and performance in terms of its ability to support more simultaneous clients. Lastly, 802.11ax provides increased speed over 802.11ac. All of these improvements are helpful for businesses, public venues, and also in homes where the number of clients continues to grow due to the proliferation of mobile and Internet of Things devices.
Quantenna continues to lead the Wi-Fi industry by announcing the world’s first 802.11ax Access Point solution. The QSR10G-AX solution will support 12 total streams: 8 streams in the 5GHz band and 4 streams in the 2.4GHz band. QSR10G-AX adds support for downlink and uplink OFDMA (Orthogonal Frequency-Division Multiple Access), providing superior network efficiency in dense environments as well as high uplink performance. OFDMA dedicates different sub-carriers for individual client devices. This allows multiple devices to be simultaneously served.
QSR10G-AX is designed to enable a very easy and fast transition for existing QSR10G customers. The QSR10G-AX chipset is pin-to-pin compatible with QSR10G, Quantenna’s Wave 3 12-stream dual-band 802.11ac and 802.11n access point solution. As a result, customers designing with QSR10G solution will be able to drop in the new QSR10G-AX solution.
“Innovation is what drives us at Quantenna,” said Dr. Sam Heidari, Chairman and CEO at Quantenna. “We were the first company to deliver 4x4 802.11n, 4x4 802.11ac and 8x8 802.11ac. Now, we are proud to continue our Wi-Fi industry leadership by being the first to announce an 802.11ax compliant solution.”
"Quantenna is launching another leading-edge Wi-Fi solution to the market. 802.11ax represents the next evolution of Wi-Fi and increases throughput and capacity needs for our end markets," said Venkat Sundaresan, Director of Product Management, Cavium Inc. "This innovative access technology will allow our powerful processor solutions to deliver new levels of performance, scalability and capacity."
“Quantenna has once again demonstrated its pioneering innovation and leadership in the Wi-Fi market with the announcement of the QSR10G-AX,” said Andrea Goldsmith, Stephen Harris Professor of Electrical Engineering at Stanford University. “This technology, which incorporates the 802.11ax protocol, is a leap forward for Wi-Fi through the access technique of OFDMA. The more flexible, efficient, and adaptive use of the Wi-Fi spectrum enabled by OFDMA will increase the data rates of the QSR10G-AX over current products, while also supporting in a reliable and scalable manner the growth of client devices in dense deployments. The transformative technology of the QSR10G-AX will be beneficial for high-performance Wi-Fi devices as well as emerging applications in the IoT.”
Key QSR10G-AX Planned Features and Benefits
· Integrated AP chipset for dual-band (5GHz and 2.4GHz), dual concurrent operation and management
· Pin-to-Pin compatibility with QSR10G
· 802.11ax Draft 1.0 compliant
· 12-stream operation
· Supports rich set of interfaces to external hosts such as PCIe Gen3/Gen2, RXAUI, RGMII, and others
· Support 2.4GHz coexistence interface
· Enable full offload for external host
· Cloud managed
Quantenna’s QSR10G-AX is expected to sample to early access partners in the early part of 2017.
Quantenna is exhibiting in its private meeting room at Novotel ExCel during Broadband World Forum in London on.