Comcast is unveiling ultra-low lag connectivity relating to extremely interactive purposes like gaming, video conferencing and digital actuality. It will possibly carry down interplay delays as a lot as 75%.
Comcast has partnered with Apple, Nvidia (and its GeForce Now cloud gaming) and Valve on its Steam recreation platform. The great factor for customers: It can come at no additional price for Comcast Xfinity Web subscribers, and it is going to be rolling out to thousands and thousands of eligible houses within the first quarter.
The brand new know-how will assist eliminate lag, or interplay delays that may price you victory in a fast-action shooter recreation or a multiplayer on-line battle area (MOBA) recreation. That is one thing I’ve written about for years, nevertheless it at all times appeared like a fleeting drawback. Comcast believes it may well reduce lag (or interplay delays) from lots of of milliseconds right down to 22 to 25 milliseconds, stated Jason Livingood, vice chairman of know-how coverage, product & requirements at Comcast, in an interview with GamesBeat.
With the launch, Comcast’s Xfinity Web latency might be dramatically diminished to sooner than the blink of an eye fixed, notably when utilizing FaceTime on iPhone, iPad, Mac, Apple TV, and Apple Imaginative and prescient Professional, Nvidia’s GeForce Now cloud gaming service, or many video games on Valve’s Steam video games platform.
For those who’re an esports star or a Counter-Strike: International Offensive participant, you’re going to essentially care about this enchancment. I might in all probability have extra enjoyable in Name of Responsibility as nicely. And followers of Microsoft Flight Simulator 2024 ought to have a area day.
“Our connectivity is the key to unlocking a world of entertainment, sports, news and information and we’re constantly pushing the limits of network innovation to create an experience that exceeds the expanding demands of our customers,” stated Emily Waldorf, SVP of shopper merchandise at Comcast Connectivity and Platforms, in an announcement. “Modern applications are real-time and interactive and require more than just fast speeds. Xfinity Internet’s lower lag times will be a differentiator for Comcast.”
With low-lag web, Comcast is breaking new floor on know-how that may assist to make sure its prospects can make the most of all the pieces the web has to supply at the moment and into the longer term. Latency-sensitive purposes will expertise much less delay, and a smoother, extra responsive end-to-end on-line expertise in comparison with different choices like 5G residence Web, the place the community will get slowed down and the connection deteriorates when lots of people are on-line, Comcast stated.
Again in October 2023, Comcast began delivering high-speed bandwidth add and obtain speeds of 2GBS in houses with its cable modem service, however bandwidth isn’t the issue for players, stated Livingood.
Initially, prospects will see the advantages of the brand new know-how firsthand when the Apple, Nvidia and Valve merchandise. Comcast’s low-lag expertise will increase as extra content material and software suppliers leverage the brand new know-how for their very own merchandise. When totally deployed it is going to be obtainable to all Xfinity Web prospects.
Comcast has been testing low latency know-how with its person teams for the previous yr and people checks have met and even exceeded expectations. The preliminary rollout started and can increase to cities like Atlanta, Chicago, Colorado Springs, Philadelphia, Rockville (Maryland) and San Francisco, deploying in additional areas throughout the nation quickly over the subsequent few months.
Initially the options might be obtainable on the XB6, XB7 and XB8 fashions of the Xfinity Gateway. Extra leased and retail modems might be added sooner or later because the software program on these gadgets start to help the brand new know-how.
Low-lag Web is made attainable by Comcast’s state-of-the-art community, which has been constructed to ship an distinctive Web expertise, ubiquitously, to the greater than 63 million houses and companies throughout the nation.
“We’re moving beyond bandwidth to lots of other factors that, especially for gaming, affect the user experience,” Livingood stated.

One motive is that Comcast has upgraded its gear, together with the packing containers in your houses, to fulfill requirements akin to IETF, DOCSIS and extra to allow the brand new low-latency tech. Principally, players care about ping time, or the time it takes for a sign to exit to a server on the web after which come again. Ping time is decrease the extra folks in the home are utilizing the web.
If one is watching Netflix and one other is taking part in Name of Responsibility multiplayer, the gamer may even see photographs begin to stutter or get blurry. The ping time can shoot as much as 300 milliseconds and are available again down, and that type of variability can also be not good for a multiplayer recreation.
“We are dramatically lowering the average (working) latency,” Livingood stated. “What we’re able to do with this new form of low latency networking is bring that working latency down to almost the same as idle latency. We’re lowering that working latency about 75% for our users, which is huge. And not only is that lower, but it’s consistently lower.”
He stated the jitter, the variability of latency, simply goes away.
“It’s just consistently low. And so you’re going to see that that ping time be a lot more constant. It becomes totally seamless and smooth, and you’re not getting the glitches in the video conferences and and these kind of things,” Livingood stated.
The low lag works in areas which can be utilizing the Comcast’s digital cable modem termination system (vCMTS), a software-based tech that connects the web to shopper’s houses. It’s a key a part of Comcast’s distributed entry structure (DAA).
“It’s leveraging the software that we have running on home gateways,” Livingood stated.
He stated that Comcast has been quietly deploying the tech in some cities and it’s in about one million houses now. Will probably be within the thousands and thousands of houses by the tip of the primary quarter, Livingood stated. The brand new tech relies on an open commonplace and it turns into extra useful to extra folks as extra app builders undertake it.
Comcast will ultimately do a advertising push across the tech when it’s extra extensively rolled out. The vCMTS tech is current in a number of the 63 million houses throughout the nation.
“From our standpoint, making it available just as a part of the service was a way to make it reach as broad a user base as broad as possible, to attract as much developer interest as possible,” Livingood stated.
Valve permits numerous types of cloud gameplay as nicely, enabling you to play higher video games on a tool that usually wouldn’t have the ability to run them.

There are particular sorts of video games that may profit from working within the cloud. Dubbed cloud native, the largest one launched this yr is Microsoft Flight Simulator 2024. In comparison with the discharge in 2020, it is a a lot larger and extra reasonable recreation. The 2024 model has 4,000 occasions extra element on the bottom than the 2020 model, and runs principally within the cloud. Again in 2020, it may take 450GB of storage to retailer all the numerous items of the sport. Now, in 2024, Microsoft can run it with simply 50GB on the native machine. However it requires a very good connection to the cloud information middle, as Microsoft realized within the buggy model of the launch again in November.
This sort of recreation would thrive primarily based on the brand new Comcast tech, and also you’ll have the ability to fly all over the world with out having to fret that the surroundings could be sluggish to load. Again in 2020, I may keep in mind flying over the San Francisco Bay and recall seeing solely half the San Mateo Bridge. The remainder of it popped in because it fetched the reminiscence of the mapped space from the cloud.
Briefly, we’ll get higher realism and sooner interplay with this know-how. Livinggood stated that you simply’ll do higher with a cable modem connection than a set wi-fi or 5G answer.
“We’ve been just iteratively working to get that latency to be lower and lower,” he stated. “I think one of the takeaways is that, you know, as I like to say, we’re kind of in the post gigabit era. You know, once you have hundreds of megabits per second or a gigabit per second, it’s not the bandwidth is not your constraint for user quality anymore. You can have one gig connection and still have a crummy cloud gaming experience, or crummy Google Meet session, because it’s a latency problem.”
The answer is “active queue management.” That is the type of basic site visitors management the place the software program can search for various kinds of flows. For those who’re downloading information, it will not be as vital as a real-time motion recreation. The motion recreation site visitors could be prioritized so it doesn’t get interrupted. And the movement of a Netflix movie might be slowed and handled, so the viewing expertise isn’t uneven. The massive leap ahead is the brand new IETF L4S commonplace, which units the principles for low-latency, low-loss scalable throughput.
“In the past, the networking standards always thought that you had to make a tradeoff between high bandwidth and low delay, and you could pick one or the other. You couldn’t have both high bandwidth and low delay. And this IETF standard basically said you can have both of these things at the exact same time, and the way that you do that is we’re going to add a second network queue at any of the typical performance bottlenecks,” Livingood stated.
Briefly, it’s a shallow queue, the place your packets don’t have to attend for a very long time.
“We’re not in an era where bandwidth is scarce anymore. Bandwidth is abundant and you still have latency problems. And so that caused the network community really at the IETF and elsewhere, but mostly at the IETF to say, if it’s not a bandwidth problem, and we’ve been pursuing this prioritization for a while, then what else is it? And that’s where they gravitated to this new standard,” Livingood stated.