Broadband Technology Improving

As has happened continuously since the introduction of DSL and 1 Mbps cable modems, the major broadband technologies continue to evolve and get faster.

Cable HFC technology is getting faster. Harmonic, one of the makers of core cable broadband technology, recently announced that the company had achieved a 14 Gbps speed with DOCSIS 4.0. The test was achieved during a CableLabs interoperability event. The speed was achieved in a mock-up that included achieving the faster speed using technology provided by multiple other vendors.

The test was achieved with an updated CMTS (which is the main hub router in a cable modem network). The speed beats the old record of 10 Gbps, also achieved by Harmonic. It’s unlikely that any cable companies will try to achieve that speed since it would mean sacrificing some upload speeds with current DOCSIS 4.0 technology. But a faster CMTS would allow a cable company to offer a true 10 Gbps download product. These kinds of breakthroughs are also important since they are the first step towards developing the next generation of electronics.

Faster home broadband service from fiber is also improving. Earlier this year, Nokia announced the availability of two different 25 Gbps customer modems, making it realistic for ISPs to offer the faster 25 Gbps service on a PON fiber network.

Nokia also recently announced the release of a 25G PON card for the network core that can simultaneously support all of the flavors of PON, including GPON, XGS-PON, and 25G PON. The company said the card would easily be able to handle the upcoming 50G PON. Having a core with this flexibility will allow ISPs to keep customers on older GPON technology without having to force an update when the newer technologies are introduced to the network.

Finally, Nokia announced the release of some new home WiFi 7 gateways for the home. The  Beacon 4 gateway can reach speeds of 3.6 Gbps, and the tri-band Beacon 9 gateway offers 9.4 Gbps speeds. These are added to a line of gateways that top out with the Beacon 24, which can achieve home WiFi speeds of 24 Gbps. The new generation of WiFi 7 routers offers the possibility of superfast speeds inside the home using 6 GHz spectrum, while at the same time still connecting to older devices using 2.5 and 5 GHz spectrum.

Another major announcement is the new generation of Tarana radios for fixed wireless. The specifications on the new radios are a leap forward in capacity and performance. The first-generation G1 radio platform could support up to 1,000 customers per tower, 250 per sector. Each sector could accept up to 2.5 gigabits of backhaul bandwidth. The new G2 platform can support up to 512 customers per sector (2048 for a tower). The radios can accept as much as 6 gigabits of backhaul bandwidth per sector.

We can’t leave out satellite technology. The first-generation Starlink satellite weighed around 570 pounds and had a total downlink budget of about 20 Gbps. Starlink is introducing its third generation of satellite that weighs almost 4,200 pounds and has a downlink budget of 1 Tbps and 160 Gbps in aggregate uplink capacity.

This is a sampling of technology improvements and is not meant to exclude improvements being introduced by other vendors. There are many other important improvements including faster lasers for long-haul fiber routes and point-to-point broadband connections using light.

One thought on “Broadband Technology Improving

  1. It is truly amazing how in the last 10 years things have advanced. I remember in 2013 gloating over a back haul link passing 50 Mbps steady in the evening. Today our monitoring traffic alone is close to 50 Mbps.

    Those Tarana numbers sound like marketing level stuff. We don’t have any G1 Tarana that is loaded (38 clients is our max so far on one BN), but from what I hear people usually top out around 100-120 clients per sector on G1. And I’ve heard of over 1Gbps but not 2Gbps. I’m sure someone somewhere has some that are maxed out.

    The real killer though with G2 Tarana is the BN is 3Ghz, 5Ghz, and 6Ghz all wrapped up in one 90° sector. 420 Watts of power and $21k to purchase. And it’s all backwards compatible. If you have the population density it’s a glorious update.

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