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5G Just Got Weird

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111–120 of 300 posts

Re: 5G Just Got Weird

#111
Not exactly on topic:

There have been a few HN submissions in the past linking to papers concerned with the effect of 5G on insects.

As a layperson I was not able to evaluate those papers. But if anyone knows if there was any kind of consensus reached about that, or even if this is something that anyone serious is concerned about, I would appreciate the pointer.

Re: 5G Just Got Weird

#112
post #75

Earlier quoted context omitted.

How do you avoid bad actors in these scenarios? Sounds ripe for general havoc, targeting specific people etc

Yeah, I could see someone have button to transmit hard braking on demand for tailgaters.

You can easily wire your brake lights to flash while you are actually accelerating

Re: 5G Just Got Weird

#113

5G doesnt seem like its enabling anything fundamentally new. The talk of any ”killer app” based on having more throughput or on these optimizations always feels like demand generation and slightly inauthentic. Are there any technologies enabled by these techniques that are not possible today?

> 5G doesnt seem like its enabling anything fundamentally new.

It does, just not for you and I. We will be surveilled more completely and inescapably than ever.

Re: 5G Just Got Weird

#114

5G doesnt seem like its enabling anything fundamentally new. The talk of any ”killer app” based on having more throughput or on these optimizations always feels like demand generation and slightly inauthentic. Are there any technologies enabled by these techniques that are not possible today?

Be careful with expectations of "possible" vs. "practical". 5G for IoT devices is a big deal in remote field and some industrial settings where wi-fi is not an option. Two examples for you: I worked on a pilot project with a state government group that wanted remote monitoring of water levels in wetlands and ponds spread across a few hundred square miles of mostly-rural area. wi-fi obviously wasn't an option and gett…

Is it realistic to expect 5G coverage in rural wetlands?

From what I understand, the range of a single 5G base station is significantly lower than 2/3/4G so they are having to install new cell sites in major towns and cities just for 5G coverage.

Re: 5G Just Got Weird

#115

Earlier quoted context omitted.

Regulate security measures eg signed messaging where only manufacturers can get certificates? Maybe combine it with license plate so it's traceable to a person?

So the attack will then be to hook into the car's on-board computer and tell it to send the falsified message with a fake plate number, and let the existing cryptographic code handle the signing. Alternatively, dump a legit cert once (e.g. by detailed examination of one on-board computer), then put that into the malicious hardware that sends falsified messages. This is "the DRM problem", but in reverse. There is no w…

There is also no way to stop someone throwing rocks at passing cars. People will die as a result. The deterrents in both cases will be the same: humanity, liability and law enforcement.

Re: 5G Just Got Weird

#116
post #73

>5G for cars to communicate with each other That's pretty good news. Even a simple "sharp braking" type coms between cars has decent potential to save lives beyond what can be achieved with radar & the like.

I suspect it would be more like hyoer-local traffic or even weather conditions reports. Perhaps a car might broadcast that it just had a collision or airbags went off etc.

I can't imagine autonomous hard braking etc though - perhaps these sorts of messages would just be used by cruise control systems to discretely create more space between vehicles ahead, or put up a "traffic/accident reported ahead" warning for humans to decide what to do.

Re: 5G Just Got Weird

#117

5G doesnt seem like its enabling anything fundamentally new. The talk of any ”killer app” based on having more throughput or on these optimizations always feels like demand generation and slightly inauthentic. Are there any technologies enabled by these techniques that are not possible today?

Be careful with expectations of "possible" vs. "practical". 5G for IoT devices is a big deal in remote field and some industrial settings where wi-fi is not an option. Two examples for you: I worked on a pilot project with a state government group that wanted remote monitoring of water levels in wetlands and ponds spread across a few hundred square miles of mostly-rural area. wi-fi obviously wasn't an option and gett…

What about LoRaWAN?

Re: 5G Just Got Weird

#118

5G doesnt seem like its enabling anything fundamentally new. The talk of any ”killer app” based on having more throughput or on these optimizations always feels like demand generation and slightly inauthentic. Are there any technologies enabled by these techniques that are not possible today?

Last mile for fixed rural wireless broadband seems like the obvious one. Today, this is generally done with either LTE or various proprietary things (or if you’re particularly unlucky, satellite). 5G should allow for greater total bandwidth, reducing the impact of contention. And on the other side, it should be helpful for very dense urban usage. Try using LTE in a large city’s central train station at a busy time an…

I used to work for a telcom, and the thing I'm most excited for is the benefits dense urban areas may see with 5G-based internet service. If it weren't for caps, it would significantly drive down the cost and bureaucracy of installing/updating infrastructure while increasing the speeds in a lot of areas.

Re: 5G Just Got Weird

#119

Earlier quoted context omitted.

Be careful with expectations of "possible" vs. "practical". 5G for IoT devices is a big deal in remote field and some industrial settings where wi-fi is not an option. Two examples for you: I worked on a pilot project with a state government group that wanted remote monitoring of water levels in wetlands and ponds spread across a few hundred square miles of mostly-rural area. wi-fi obviously wasn't an option and gett…

Is it realistic to expect 5G coverage in rural wetlands? From what I understand, the range of a single 5G base station is significantly lower than 2/3/4G so they are having to install new cell sites in major towns and cities just for 5G coverage.

There are technologies belonging to the 5G family that target specifically IoT. They can coexist with “normal” 5G /4G in the same base station. These technologies have way more robust transmission schemes that make them operational even with 20db (100 times) worse SNR than normal mobile communications technologies like LTE. The flagship technology in this space proposed by 3GPP is NB-IoT.

Re: 5G Just Got Weird

#120
post #75
post #73

>5G for cars to communicate with each other That's pretty good news. Even a simple "sharp braking" type coms between cars has decent potential to save lives beyond what can be achieved with radar & the like.

How do you avoid bad actors in these scenarios? Sounds ripe for general havoc, targeting specific people etc

>Sounds ripe for general havoc

More than humans and their flakey attention span & slow reactions?

I mean yeah any complex system has potential for abuse & steps should be taken to mitigate that seems like a solvable problem in the bigger picture.

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