4 ms·
Yes but the speed of light is very fast. Light can travel nearly 200 miles in one millisecond.
by freehunter 7y ago
Yes but the speed of light is very fast. Light can travel nearly 200 miles in one millisecond.
- linkregister 7y agoPlease explain how 5G would overcome the obstacles to 1ms ping better than 4G. Higher bandwidth does not reduce latency for minuscule packets with low contention.
- deleted 7y ago[deleted]
- jsjohnst 7y agoCorrect, light travels at 186 miles per millisecond, but virtually nothing we have can actually transfer a single packet anywhere near light speed. Take two high end expensive network cards with fiber SFP+ connectors and connect them with just 1 meter of cable, and I very highly doubt you’ll get a ping time of under 0.1ms. And that’s just 1 meter! If speed of light was the limiting factor, that should be down in the nanosecond region.
- wmf 7y agoI hate to be that guy but I have done that test and the latency is under 30 us or 0.03 ms.
- jsjohnst 7y agoI meant to say 0.01ms :( (Hence why my later part of the comment references “nanosecond region”) Thanks for calling it out! Edit: To say my original post another way, about the fastest I’ve ever seen for a ping time is ten microseconds over a one meter fiber optic cable. That’s 3,000x slower than the speed of light. Fiber optic cable is far more efficient than a Point-To-Multipoint radio which is in a noisy environment (aka cellular), so to think you’ll get within 2 orders of magnitude using 5G vs the best fiber speeds I’ve seen seems crazy to me.