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What 5G Will Mean for You

nytimes.com

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Re: What 5G Will Mean for You

#71

Post by f00fc0d3 »

kristoffer wrote: post #68
f00fc0d3 wrote: post #62

Earlier quoted context omitted.

I have seen such projects - real LTE PHY algorithms are much more complex than stuff in 3GPP. You can write something 3GPP compliant in some simplified cases, but it would be totally useless in real network. Secondly you don't really want to use FPGA for majority DSP processing in LTE PHY. Design cycles on FPGA are too slow and HLS techniques are still not trusted. Beside that x86+fpga are some kind of specialized st…

Modern x86 is quite competent as DSP using AVX. I think you are exaggerating. I have worked with LTE baseband as well, but admittedly never done an x86 LTE PHY. pCell claims to be doing quite complex network mimo LTE stuff on x86, still mostly vaporware though. Regarding FPGA, of course you don't do the complete implementation in it, you accelerate the low level stuff, FFTs, coding, etc, as are already done in all ba…

Yep, AVX is nice, but still it is far from current DSP chips. I ported a subset of PHY to real AVX2 CPU and AVX512 sim. It is (sometimes) comparable to c6x (which is a crap DSP) if you take (much) higher clock into account, but comparing to current DSP IP cores it is a joke.

Re: What 5G Will Mean for You

#72

Post by f00fc0d3 »

the_mitsuhiko wrote: post #67
f00fc0d3 wrote: post #65

Earlier quoted context omitted.

Future standards will be even more tight, 5G working assumption is 1 ms HARQ loop. Where you got the idea that I assume the ENB has to be on other side of the world ?

> Future standards will be even more tight, 5G working assumption is 1 ms HARQ loop. That's just to the base station, no? How does that in any way apply to what you transmit over your network? > Where you got the idea that I assume the ENB has to be on other side of the world ? Because your comment about latency implied that.

>That's just to the base station, no? How does that in any way apply to what you transmit over your network? We are talking about ENB here, core LTE network is already virtualized.

>Because your comment about latency implied that. Goal with ENB virtualization is to have single or few server farms per city, unlike today where ENBs are spread all over the city, and such usecase is still problematic with latencies - been there, done that.

Re: What 5G Will Mean for You

#73

Post by a_c_s »

bryanlarsen wrote: post #37
jtmarmon wrote: post #15

> Driverless cars with extremely fast response times Seems like relying on low network latency for critical safety features is designing a fundamentally flawed system. Is this really how driverless cars are being made or is the author just pulling things from his ass

Driverless cars need detailed and up-to-date map information. After you enter a destination it will need to download and/or update that information. It wouldn't be a safety issue, though. The car would not start driving to the destination until it had everything it needed.

This is yet more speculation: while Google's efforts have produced cars that rely heavily on detailed pre-mapping of surroundings, there are others, such as MobilEye, who seek to have the car navigate with almost no pre-mapping. We have yet to see if one model prevails over the other.

Re: What 5G Will Mean for You

#74

Post by ac29 »

dineshp2 wrote: post #38

The development of the 5g standard and it's deployment is something to look forward to, but one issue that remains is data caps. We need to remember that the vast majority of people access the Internet primarily through mobile devices and broadband penetration is very low in developing nations. So even though people have access to high speed internet though mobile networks, data caps act as a hindrance to utilize the…

> The issue that needs to be addressed immediately is making unlimited data available at low costs.

Unless you can make radio spectrum unlimited (you can't), data caps and/or throttling are going to be a reality for the foreseeable future.

Re: What 5G Will Mean for You

#75

Post by [deleted] »

ac29 wrote: post #74
dineshp2 wrote: post #38

The development of the 5g standard and it's deployment is something to look forward to, but one issue that remains is data caps. We need to remember that the vast majority of people access the Internet primarily through mobile devices and broadband penetration is very low in developing nations. So even though people have access to high speed internet though mobile networks, data caps act as a hindrance to utilize the…

> The issue that needs to be addressed immediately is making unlimited data available at low costs. Unless you can make radio spectrum unlimited (you can't), data caps and/or throttling are going to be a reality for the foreseeable future.

[deleted]

Re: What 5G Will Mean for You

#77

Post by nextos »

ccozan wrote: post #53
nextos wrote: post #18

Earlier quoted context omitted.

Even in some parts of Cambridge 3/4G leaves a lot to be desired. EE has sometimes downtimes that can be measured in days. Its very disappointing. Its also absurd companies offering "unlimited" mobile traffic do deep packet inspection. Whenever I try to SSH to any of my servers I get banned immediately, despite having a ridiculously low data rate.

I never heard about been banned ( what does it mean, get punished for 10 mins with no network ?? ) for using SSH. Maybe is something else? Indeed, ToS requests that you don't use the data connection for something like VoIP or other type of communication, in practice they don't care. I have in Germany's Vodafone 3GBs that I can spend over LTE, and boy, they are spent religiosly until the last KB. Half free communicati…

UK telecoms are a bit peculiar. E.g., Giffgaff bans users for 30 mins (first warning). This is pretty well known. They try to avoid tethering through SSH tunnels.
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