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Wireless Explained
เข้าร่วมเมื่อ 31 พ.ค. 2022
This channel explains wireless communication technology primarily used in 5G. The goal is to reduce the knowledge gap between academia and industry in wireless communication.
Search Space and CORESET configuration in 5G
This video provides an overview of Search Space and CORESET configuration in 5G. Also explains how PDDCH is scheduled within a CORESET, and the corresponding parameter structure.
▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
0:00 - Introduction
0:15 - PDCCH Scheduling in 4G
1:07 - PDCCH Scheduling in 5G
1:26 - PDCCH-Config for Dedicated Signals
4:03 - Additional Search Spaces
4:31 - Blind decoding of PDCCH by UE
5:12 - REG (Definition)
5:18 - CCE (Definition)
5:38 - Aggregation Level (Definition)
6:40 - Interleaving
6:48 - REG Bundle (Definition)
8:09 - PDCCH-Config for Common Signals
References:
[1] ETSI TS 138.211 Section 7.3.2.2
[2] Textbook “5G New Radio in Bullets” by Chris Johnson
[3] ShareTechNote: www.sharetechnote.com/html/5G/5G_ResourceAllocationUnit.html
[4] ShareTechNote (CORESET 0): www.sharetechnote.com/html/5G/5G_CommonSearchSpace_Type0_PDCCH.html
Music: Erik SATIE - Gymnopedies 1
Thanks: Venkatarao Gonuguntla, Revathy Narayanan
#5G, #WirelessCommunication, #CellularCommunication, #CORESET, #SearchSpace
▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
0:00 - Introduction
0:15 - PDCCH Scheduling in 4G
1:07 - PDCCH Scheduling in 5G
1:26 - PDCCH-Config for Dedicated Signals
4:03 - Additional Search Spaces
4:31 - Blind decoding of PDCCH by UE
5:12 - REG (Definition)
5:18 - CCE (Definition)
5:38 - Aggregation Level (Definition)
6:40 - Interleaving
6:48 - REG Bundle (Definition)
8:09 - PDCCH-Config for Common Signals
References:
[1] ETSI TS 138.211 Section 7.3.2.2
[2] Textbook “5G New Radio in Bullets” by Chris Johnson
[3] ShareTechNote: www.sharetechnote.com/html/5G/5G_ResourceAllocationUnit.html
[4] ShareTechNote (CORESET 0): www.sharetechnote.com/html/5G/5G_CommonSearchSpace_Type0_PDCCH.html
Music: Erik SATIE - Gymnopedies 1
Thanks: Venkatarao Gonuguntla, Revathy Narayanan
#5G, #WirelessCommunication, #CellularCommunication, #CORESET, #SearchSpace
มุมมอง: 9 744
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Thanks for the video, it was very clear! I have a question, does this mean there is a miniscule chance of two UEs ending up with the same C-RNTI, if the selected ue-identity is also the same?
Indeed, the best explanation of the concept around PDCCH scheduling I have seen anywhere, including the '5G bible' "5G New Radio In Bullets". Thank you for your effort!
please more video please
great explanation but the AI voice sounds a little off dont ya think? lol
I didnt understand Interleaving and REG Bundle. Why is this neccessary when we already already know CCE is made of 6 REs? and Why is interleaving and cyclic shift used ?
When and where does RA-RNTI comes into picture???
Best Explanation for CORESET
Thank you, can you please let us know how to calculate Uplink TB size in 5G ?
It's awesome!!!
AMAZING
Very clear video with minimum time wastage. Loved it
Thanks for such a brief video. Can you also make a separate video based on Zadoff Chu sequence, that would be incredibly helpful.
Appreciate your presentation. The topic is neatly explained in a simplest way. I saw very few videos. Could you please cover more topics. Thanks
Can anyone tell which 3gpp papers should I refer to understand mac layer ?
What is the use of Timing Advance?
BS has to receive uplink signal from all UEs at the same time, i.e., time synchronized. So, far-away UEs transmit earlier than nearby UEs, so that all signals reach BS at the same time.
First Question, how will one UE know which Zad Off Chu seq was selected by other UE??
UE will not know. In contention based RACH procedure, a UE randomly choose a Zadoff Chu sequence, without knowing if any other UE also has chosen the same.
Thank you
Very nice❤❤ thank you
Amazing ultimate explnation brother loved it ❤❤...Many thanks for your amazing content
Wow amazing visual aids and animations loved this..Thanks for explanation, please keep adding more...loved this great 👍👌🏻🌟😊
Amazing succint explanation video thanks for making and sharing...👌🏻
Wow best amazing explantion i have seen till now.. Thanks a lot..please do more videos❤
Very good presentation, thanks
More new videos...
I want new awesome video.
Great Video with insight. But it seems that the Max Allowed LDPC input size for Procedure C shall be 8424 (which is the maximum input size of BG1 exclude 24bit CB-CRC) .
Great Explanation :)
Great visualization! Amazing work. Are you sure is CSI req is sending only via DCI0_0? I think in 5g DCI0_1 can be also used for request? I assume we still talk only about the aperiodic one.
You are right. "CSI request" can be sent in DCI0_1 also, which I forgot to mention at 2:29. Thanks for pointing this out 👍
How come the coreset longer than 3 OFDM symbols at 4:23?
You are right. CORESET duration cannot exceed 3 symbols. The example at 4:23 is only for illustration purpose. Thanks for pointing this out 👍
Hi why you are not uploading new videos .you hav been doing great work with your deep experience
excellent video
Great videos, the graphics help a lot :), do you use manim or some other tool to prepare the visuals?
For this video, I used After Effects.
thanks for video.. but I wanna ask a question to you.. is this mechanism just valid for downlink link adaptation ? or what about uplink link adaptation ? is the arrangment of MCS ealized at gNB for uplink link adaptation ??
Yes, this mechanism is valid for uplink also. In uplink, MCS for PUSCH transmission is decided by BS and conveyed to UE via scheduling grant (DCI_0 within PDCCH). BS adjusts _uplink MCS_ to attain a _target BLER_ , typically 10% for MBB traffic.
🙏💐💐💐
As you mentioned , In 4G, on every slot, some 1 are 2 are symbols are reserved for PDCCH and remaining symbols are for data transmission..in that reserved symbols if we don't transmit PDCCH,the unused symbols can't be used for data transmission.. Coming to 5G , CORESET concept was introduced for PDCCH transmission My query is like Can't we transmit PDCCH without CORESET? In 5G, we can use that unused symbols in the PDCCH for data transmission purpose... Can we do in this way like ..without having that CORESET for PDCCH transmission,can we use that unused symbols in the PDCCH for data transmission purpose? How that CORESET will be placed in time and frequency grid? Is there any triggering condition or when the PDCCH data is available it will also be available at that time?
UE search for PDCCH in all CORESET configured. If CORESET concept is absent, then UE has to search for PDCCH on a larger search space. CORESET is introduced to reduce the search space for UEs. Time-frequency location of CORESET is informed by BS to UE via RRC messages 1:25 .
Thank you@@WirelessExplained
Excellent presentation
🎉❤🎉
wonderful explanation. I can see the sheer amount of hardwork that has gone into making this video
superb! 😀
Thanks very useful 🙏
Great video
Great job. Very concise and informative. Thank you for sharing
Very informative..waiting for new video
Waiting for new video..very nicely explained
so, if I'm going to simulate a certain service from 5QI with certain SINR in 5G NR what paper you could recommend, so I could calculate accurately the carrier capacity (not just Shannon capacity)?
You can use 5g-tools.com/5g-nr-throughput-calculator/
@@WirelessExplained Thanks!
Thanks
Very helpful and easy to understand. Thank you 🌺
Very informative. Excellent! 👍
Excellent video.
thank you a lot, best explaination i've seen