5G Frequency and Time Domain Structure

[@OurTechPlanet]

For 5G topics discussed in 5G Job Interviews, check out the complete playlist below :) 🌐5G Interview Topics 💡kzbin.info/aero/PL4OXTttOk9WiLsz4fR62lpPcT3Wx3l5OP

[@Trek_RC_PlusPlus]

My best compliments for this video. The topic has been explained in such an incredible easy way! Everyone can understand it! Thank you! Hope you will add some more videos on 5G.

[@OurTechPlanet]

Yes, more videos are in the pipeline. Stay tuned!

[@pradeepkumarsingh4685]

Best Video for 5G in very easy way, Thanks 🙏

[@OurTechPlanet]

Happy to help

[@coolcurly9736]

That was a great explanation while referring to the 3GPP standard as well. I'm not a telecom engineer but I have to learn about resource allocation for another project. This helped me a lot to understand how things work.

[@OurTechPlanet]

That is great to hear. Thanks :)

[@khaledgawish2048]

Appreciate what you're doing for us , keep up the good work 💪✌✌

[@OurTechPlanet]

Really glad to see the positive response. Thanks Khaled!

[@yvonnebray8787]

What a brilliant explanation of how 5G works. Thank you so much for enlightening me today.

[@OurTechPlanet]

Thanks, Yvonne. Glad that it helped :)

[@SportCBDs]

Hi, I had no idea how 5G works! glad I came across this video mate. very helpful that's for sure! Thank you.

[@OurTechPlanet]

Thanks for your appreciation mate!

[@mohammadassaf6764]

Thank you for publishing such interesting videos. Where can I find the presentations (.ppt files) for your videos, not just this one but also the others?

[@OurTechPlanet]

Thanks. Unfortunately, we do not share the presentations, the only content is on youtube.

[@davidusta7_suta]

Thank you for this video. Really helpful. One question, though. Why do we have 50 RBs for SCS = 30 KHz? If it is the double of symbols compared to SCS 15 KHz, why don’t we have 200 RBs?

[@OurTechPlanet]

RBs are in frequency domain and symbols are in time domain. So with SCS 30KHz, a RB takes double the amount of bandwidth compared to 15KHz. Thus, a channel bandwidth having 100RBs with 15KHz will only have 50 RBs in case of 30KHz.

[@m.karthikeyan6482]

Please tell me about the ulprograntTimer parameter simply

[@OurTechPlanet]

We try our best to keep the information vendor agnostic on this channel and as such, we try not to discuss vendor specific parameters. Thanks for understanding :)

[@TheDigerian]

Hi, how many symboles in one subframe ?

[@OurTechPlanet]

In NR, usually we are using the term Slots and so as an example, in case of low band, one slot is equal to a subframe. So, both of them have 14 symbols.

[@TheDigerian]

Hi, Is RBs and PRBs are same thing ??

[@OurTechPlanet]

yes, effectively, you can say that they refer to same thing.

[@TheDigerian]

@@OurTechPlanet but i found that PRB is multiply of RB: 2*(7*12)

[@saudkhan517]

Do we have 2DL 2UL slot configuration available today? If not is it in roadmap?

[@OurTechPlanet]

As far as I know, in the current vendor implementations, we do not have this. Although one of the vendors do have 2DL 3UL configuration available.

[@Sergey-mq3ol]

Why have you 100 RB's for LTE in case 20 MHz? I didn't understand. Thanks.

[@OurTechPlanet]

This is based on specs. In simple words, in LTE there is a 1 MHz guard band on both sides in 20MHz channel. So actual bandwidth used by LTE is 18MHz. In 18MHz, we can have only 100 RBs (12 * 15 * 100 = 1800kHz or 18MHz -> 1RB = 12 subcarriers with 15kHz spacing)

[@Sergey-mq3ol]

@@OurTechPlanet Thanks a lot!

[@OurTechPlanet]

@@Sergey-mq3ol You are welcome

[@Sergey-mq3ol]

@@OurTechPlanet May I ask a question? :) What is "Base time unit"? Known as Tc. In 5G = 1/(f*Nf) = 0.509ns in LTE = 32.55 ns. Thanks

[@kamalibrahim1796]

Its too clear my friend

[@OurTechPlanet]

Thanks :)