5G NR Physical Layer : Frame structure, Flexible sub-carrier spacing, time slots and Resource blocks

We discuss 5G NR basics including 5G NR frame structure, flexible sub-carrier spacing, flexible time slots and Resource block configuration in 5G NR.
You can access the LTE Physical layer video from the link below
• LTE Physical layer : L...
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#5G #Basics #FrameStructure #Subcarrier #Spcaciny #OFDMA #Physical #timeslots

[@unkuser-lh4pm]

Incredible. Muy buen vídeo señor.

[@WinInk]

Thank you

[@arzu752]

You are great teacher, well explained, I didn't think that this topic is that easy, you make it very easy 🤯😃

[@WinInk]

Thanks. I am glad it helped.

[@arashmahmoudian]

Thank you, short and efficient.

[@WinInk]

Thanks for the positive feedback

[@tweetran271]

Thanks for the great tutorial. Easy to follow.

[@WinInk]

Glad you enjoyed it!

[@dibasdas1134]

Thank you...
For this simple overview of 5G Phy layer.
We are waiting for upcoming videos..

[@WinInk]

Thank you Dibas for your feedback. We would be starting a new series on 5G very soon. We also yesterday posted a new video for LTE design

[@yadukrishnank2461]

Beautiful explanation. Thank you..!

[@WinInk]

Glad it was helpful! :)

[@pankajazad431]

Thank you . Very well explained.

[@WinInk]

Glad it was helpful!

[@kothurimanikanta4636]

I am beginner for the NR physical layer.Very helpful to me thanks

[@WinInk]

Glad it was helpful!

[@AshutoshSingh-bp4qe]

Very well Explained ! !

[@WinInk]

Glad it was helpful!

[@armandodamian2646]

excellent and brief explanation. Thanks

[@WinInk]

Thank you for the positive feedback

[@changethename4725]

Thank you so much Sir..This was really informative

[@WinInk]

So nice of you

[@sujitmenon4754]

Simple and precise

[@WinInk]

Glad you liked it

[@nomad_diaries86]

Perfect and beautiful explanation. One suggestion is to explain with more real life examples,Thankyou.

[@WinInk]

Thank you, I will

[@protocolsy2166]

Easy explanation thanks

[@WinInk]

You are welcome

[@shoaibakram4399]

really good lecture sir.

[@WinInk]

Thanks and welcome

[@YareYare-sz9cn]

thank you so much , helped me a lot . Can you please make a video on PDSCH processing

[@WinInk]

Will make a video on PDSCH allocation and other algorithms soon - If you have any particular topic within PDSCH do let me know

[@bgotura]

Thank you! Very useful.
I have a question. what is the trade off when using higher SCS? Is it reliability? Does a shorter TTI mean that modulation needs to be kept low to maintain the same channel quality?

[@WinInk]

Will try to address this in upcoming videos

[@yanpengyang8085]

@@WinInk Also want to ask the same question, is it reflected already in any videos? Thanks

[@RobertoSilva-hj9yn]

Very helpful video. Thank you. I just recommend you to make the audio a little higher, for the rest is perfect

[@WinInk]

Thanks for the feedback. will definitely work on the audio

[@iqrauni1915]

Great work...Can you please make videos on 5G NR MAC LAYER as well

[@WinInk]

Sure. will upload more videos in Feb.

[@sekharreddy6367]

Excellent explanation. Please correct the slot cout it's 2power 4 for the u 4 not 2 power 8.

[@WinInk]

I will review and check if there is anything wrong. Thanks for letting me know :)

[@nitesharora91]

Good job brother. This was really helpful 👏
One question.. More number of slots reduce the latency. What helps increase throughout in 5G?

[@WinInk]

Thanks for the feedback. Higher BW, Beamforming, improved Radio transmission etc.

[@vivinpai90]

Thank you for the information. What actually means by number of Resource Block ? In LTE, i did not see info on the number of resource block. I understood in Frequency domain, we can have a maximum of 180KHz (15Khz x 12). In 5G, we can have from 180Khz to 2880Khz (240KHz x 12). Where does number of resource block come into picture

[@WinInk]

Resource block is a unit of frequency resource which is allocated to the user. In LTE, its fixed while in 5G we have multiple configs of Resource blocks

[@puliraju9222]

Voice is very low sir. Required to improve audio quality. TQ For knowledge sharing..it's an simply awesome

[@WinInk]

Noted. I have improved voice in the most recent videos

[@rahul-vv1vh]

Good

[@WinInk]

Thanks

[@moviesbox6900]

Hi, thanks for the video, one question, when we increase SCS from 15KHZ ( one time slot/14 OFDM synmbols ) to suppose 240KHZ (16 time slots / 16x14 OFDMS symbols within the same subcarrier , iznt throughput will increase in same fashion ( x16 times) as we have 16*14 OFDM symbols now compared to legacy 15KHZ case with only 1X 14 OFDM symbols ?

[@WinInk]

The total duration of the frame slot remains the same and therefore no impact on throughput. It is more to do with latency.

[@rakran73]

how prb number varies for a fixed bw and fixed numerology?

[@WinInk]

PRB are dependent on the total BW. Subcarrier spacing determines how much of data/OFDM symbols can be packed in to the subframe

[@salmanmustafa4755]

Can you please explain how to calculate Guard Band for 5G?

[@WinInk]

Hi Salman. Are you looking to calculate guard band for a particular carrier BW?

[@aniketdhumal1593]

Very nice video. You just mistakenly written 2 rest to 8 to while showing time slot with 'u' factor.

[@WinInk]

I am not sure what you are referring to. If there is a mistake, apologies for that.

[@tapassaha8855]

In the 15khz subcarrier slot per subframe is 1, and the slot contains 14 OFDM symbols. for In 30khz subcarrier slot per subframe is 2, each slot contains 14 OFDM symbols, then what size of each slot and the size of 1 subframe? In 60khz subcarrier slot per subframe is 4, and each slot contains 14 OFDM symbols, then what size of each slot and the size of 1 subframe?

[@WinInk]

Please look at the part where slots and subframes are explained in the video

[@nagendrababu6221]

It is useful. But just that I couldn't see the resource grid info, even though the snapshot of the video shows about 5G NR resource grid. I think the snapshot of the video is misguiding. :(
Actually I was looking for info. on how the mixed numerology works within the same symbol period. I am confused since the symbol period of 15KHz and 30KHz are different. so how both mu=0 and mu=1 would coexist in the same symbol period. Please reply if there is a video on that

[@WinInk]

Mu=0 and Mu=1 will not co-exist in the same symbol period as they point to different subcarrier spacing.

[@rajanishthottempudi7006]

Can you please point to 5G layer 1 specification

[@WinInk]

Sure will try to include in next videos

[@ADITYASINGH-ru1kj]

Can u please me to understand the size of RB in diffrent numerology?

[@WinInk]

Will try to explain in the next videos

[@ADITYASINGH-ru1kj]

Thanks alot

[@sukumarane2302]

In higher frequency bands > 24 GHz( mm waves ) ,ultra low latency can be achieved using higher sub carrier frequency spacing with multiple numerology…But in 5 G low band less than 1 GHz ,how this ultra low latency can be achieved ?

[@WinInk]

The higher frequency bands are included in 5G specifications and known as FR2.

[@rakheesharma7305]

what is 'mu' here?

[@WinInk]

'mu' is the variable which can have values from 0 to 4 and provides us different slot structures in 5G

[@wittiam7224]

Volume is too low, cant hear properly

[@WinInk]

Have tried to improve in next videos