5 ms·
You have heard wrong - it's amusing that you're so confident in its failure despite having the wrong information. There are two phases in the 5G NR standard. T
by apcragg 7y ago
You have heard wrong - it's amusing that you're so confident in its failure despite having the wrong information.
There are two phases in the 5G NR standard. The first phase relies on some elements of the LTE control plane to coordinate data services. These data services use new numerologies for their OFDM modulation, vastly more flexible resource block, allocation, improved error control coding, lower maximum latency, better channel allocation, and standardized MIMO support - all of which will improve reliability and throughput, especially in crowded channel conditions.
Phase 2 formally introduces millimeter wave signaling - this is what does primarily propagates through line of sight (LOS) channels. Clever beam forming and beamsteering can alleviate this to an extent but these cells are intended for dense urban environments or interiors of large buildings. These will supplement the lower frequency bands when available but 5G NR devices will still use the lowband when mmWave is unavailable. Phase 2 also switches over to an entirely 5G NR backed control plane (Standalone, or 5G NR SA) which has its own reliability and throughput improvements though these will all happen in the lowband since mmWave isn't suited for these tasks.
- rgrieselhuber 7y agoDo you work in the industry?
- apcragg 7y agoNot for the big telecomm's but I design parts of the radios and DSP algorithms implementing the major cellular technologies.
- rgrieselhuber 7y agoWhat are your thoughts on the safety concerns?
- apcragg 7y agoNot my area of expertise. The main study I'm aware of showing some harmful affects uses an unrealistic amount of power and curiously only showed effects for male mice. I'm hesitant to dismiss it, because effects from heating caused by non-ionizing radiation are well documented but that amount of power is just not present in cellular systems whether that's LTE or 5G NR.
- rgrieselhuber 7y agoI worry in particular about the towers being in close proximity to schools and housing developments.
- xxpor 7y agoDo you own a microwave oven?
- rgrieselhuber 7y agoNo
- Spooky23 7y agoMore appropriately, do you operate a high frequency radar gun?
- enjo 7y agoIt really is the 1980’a again...
- CamperBob2 7y agoWhy don't you demand actual reproducible evidence before worrying? Nonionizing radiation has not been shown to be harmful, but self-inflicted psychological stress certainly has.
- Zancarius 7y ago> only showed effects for male mice. Interestingly, it might not be the experiment but rather the experimenters themselves. When this study came out, I mentioned it to my girlfriend at the time (a veterinarian), and she pointed to research [1] that suggests a correlation between the presence of male researchers and stress in mice. It's plausible that if male researchers were present, the increased stress response could contribute to greater susceptibility to certain cancers (it was only the male mice in the 5G study that were affected). I have no idea how the study was done or the genders of the researchers who participated, but it's worth considering that other variables may be at play. Perhaps it should be replicated under an all-female research environment if it wasn't originally. [1] https://www.nature.com/news/male-researchers-stress-out-rodents-1.15106 https://www.nature.com/news/male-researchers-stress-out-rode...
- sroussey 7y agoWorry about your blender. Seriously. Big electric motor.
- petra 7y agoDeploying 5G mm-wave "everywhere" seem like a huge expense. How will telecomm's justify that ? what do you see as the big use cases ?
- jodrellblank 7y agoit's amusing that you're so confident in its failure despite having the wrong information. Why would that be "despite"? That would have to be being confident in its failure despite having information that it would be a success. Surely they're confident in its failure because the information they have says it will be bad? And then your comment becomes "I'm laughing because you're confident in your beliefs" which is content-free smugness, or "I'm laughing at you because you don't know what I know" which is more or less the same, if not worse.
- apcragg 7y agoBeing confident enough to trash-talk based on hearsay is just being arrogant.
- jodrellblank 7y agoDismissing other people's information and sources without knowing what they are or where they're from, assuming your knowledge is automatically superior, laughing at them, is similarly just being arrogant. And then, after being pushed, admitting you have a vested interest in making them sound better and your job depends on it, isn't a good look.
- apcragg 7y agoI mean my sources are the actual 5G Standards, the test equipment I've used, and my knowledge of cellular systems stemming from experience and and formal education so yeah, I think it's a fair assumption that my knowledge is more than "some things I heard". My job does not depend on the success or failure of 5G, I don't know where you got that from.
- inimino 7y agoInformation is not equally likely to be valid regardless of the source it came from. This is the curse of being an expert (on anything) and engaging with kooks who think they are experts because they read something on the internet. If you had direct experiences and you share them, those shouldn't be ridiculed, but if you pass on information that is not from your direct experience and which people who have direct experience believe to be false... that's also, as you say, "not a good look".
- denton-scratch 7y ago"New numerologies"? This is supposed to inspire me with confidence?
- cesarb 7y ago"In the context of 3GPP 5G standardization contributions, the term numerology refers to the configuration of waveform parameters, and different numerologies are considered as OFDM-based sub-frames having different parameters such as subcarrier spacing/symbol time, CP size, etc." (source: https://red-colmena.com/f/JyY1ajY1JmhhZSFpdC91JGcmIyEsYGU/18/08/cw_5g_training_v3_slides.pdf https://red-colmena.com/f/JyY1ajY1JmhhZSFpdC91JGcmIyEsYGU/18... which I found with a quick web search for "OFDM numerology")
- bendbro 7y ago> Phase 2 formally introduces millimeter wave signaling - this is what does primarily propagates through line of sight (LOS) channels. Clever beam forming and beamsteering can alleviate this to an extent but these cells are intended for dense urban environments or interiors of large buildings. Thanks for all the info. Why don't we just skip phase 2 and continue using wifi?