2.9 - CARRIER AGGREGATION TECHNIQUE (CA) -CAPACITY & COVERAGE ENHANCEMENT IN 4G LTE

CARRIER AGGREGATION TECHNIQUE (CA) -CAPACITY & COVERAGE ENHANCEMENT IN 4G LTE
Imagine a road is connecting two places. Now, As the number of people travelling increases, what do we do to serve the increased traffic? We add more lanes or construct flyovers.
Similarly in LTE, Carrier aggregation is used to serve increasing bit rate demand. Here bandwidth is increased by aggregating separate spectrum, thus increasing the bit rate and network performance.
We have shown the different technique can be use to deploy CA, such as
Intra-band Contagious - easiest to deploy
Intra-band Non Contagious - used in fragmented network
Inter-band - Complex
also we have shown the LTE CA Classes to differentiate from others.
It also includes gradual work done at different country to deploy CA and plan for the future release.
This is the ninth Video of the LTE- Fundamental series
You can catch the full series by following this link
• 2 - Fundamental Of 4G ...
Also, Check out our series on Evolution of communication -
• 1 - Evolution of Commu...
Reference:
Images - Google images, Openclipart,
Music - Bensound, Google youtube audio library
Content - 1. LTE - The UMTS Long Term Evolution (From Theory to Practice - book)
2. LTE Advanced by Wiley Publication - Book
3. Other Internet Resources
4. 3GPP Documents and standards (Open Source)
5. Radio Electronics websites
6. CA for Dummies ( Book by Wiley )

[@thunder440v3]

Content on this channel is really good. Stop worrying about voice (human/robotic). Content is good most importantly and voice is good enough to understand . Thanks .

[@LTE4G]

+Thunder 440v - Thanks a lot for the nice words. It's people like you who motivate us to work hard. We will definitely keep making videos as long as we can. Happy Learning.

[@thunder440v3]

Thanks 😊

[@wottowutzke]

Very, very important and great explanation, good background, thanks a lot, success

[@samykamkar]

Great video! I love your series. I must note that I prefer the synthesized voice as it was easier for me to understand. Keep up the awesome videos.

[@LTE4G]

Really? You are the first person who said that.

[@samykamkar]

The highest rated comment here said the same thing. Anyway, it’s your channel and you can share however you like! I really appreciate the information any way you do it!

[@JakeHambyZ80]

@@LTE4G Yes, I like your voice much better than the synthesized voice.

[@shuyuchen3080]

Keep up the good work! Very helpful with understanding. I would vote for the synthetic voice since it does not have accents....

[@LTE4G]

+Shuyu chen - Thanks Shuyu. Is it difficult to understand?

[@johannesvoigt9071]

I really appreciated you using your natural voice! i find it a lot easier to understand than the synthetic ones. your accent is quiet present, but it is good to understand! :)

[@alanspicertelecom]

You finally have the CA #9 done. I should have come back more often. Now I'm over 1 week late :-)

[@LTE4G]

+Alan Spicer - lol! Sometimes we feel that we should increase our our frequency of video upload. You make us realize that it's okay to be slow. We always appreciate your support. Happy learning

[@manimaranchandran3109]

Great video with fruitful information's.. 👍

[@slhzidi]

Keep up the amazing work! It's really helping and enlightening!

[@LTE4G]

Thanks a lot Sadzey.

[@su-hyunjung2477]

Thank you very much for your great video :) easy to understand, you use your natural voice though. 👍🏻

[@LTE4G]

+Su-Hyun Jung - Thanks a lot. Happy Learning.

[@anshulgoyal8506]

Great job people, this kind of stuff is really making things easier to understand for beginners.Can you make such effort covering the LTE stack? Thanks in advance :)

[@sanjaysinghsolanki3953]

Kudos for good work and thanks a lot for sharing these videos. Keep up doing wonderful work !!!

[@LTE4G]

Thanks Mr. Solanki. We have finally migrated from Text to Speech converter to human voice. We would appreciate some feedback.

[@ankurtomar]

Carrier aggregation 4G+

[@prernakaushik6340]

Content is very good, very nicely explained.Thanks a lot

[@venkatanaveenpotnuru2164]

that was awesome and very informative. thanks and all the best.

[@LTE4G]

Thanks Venkat. Happy Learning.

[@derwoodkhan4804]

This is just beautifully explained . Thank you .

[@hordevran]

Brilliant video as usual. Thanks a lot!

[@LTE4G]

+HordeMajster - Thanks man

[@mohammadalmaazi]

I am sorry , you are doing a great job. I really understand a lot of concepts easily. However, the accent in this video makes it tedious and so difficult to absorb the information presented here. you are explaining to the whole researchers who they are from various countries not only from India. So I recommend strongly to help all people to get benefits from your amazing explanation, you should use a clear accent not the Indian one . All my respect for you amazing channel.

[@JakeHambyZ80]

I have the opposite feedback. I find the author's Indian accent much more pleasant to listen to than the people he paid to do the voiceovers in the earlier videos in the series. I'd love to see some new videos in the same style as the later ones in the series.

[@ssasidhar75]

excellent explanation..

[@LTE4G]

Thanks Sasidhar. Happy Learning.

[@mohitmnit]

The lane example/analogy that u took would be more appropriate with MIMO rather than CA. :) but anyways A very nice video

[@cleversonahum]

Amazing explanation, thx

[@HimanshuKushwahaHimmi]

Are you people planning to do any videos regarding 5G NR? Btw great videos. :)

[@palashkundu1771]

Great video and easier to understand. Is it possible for supporting CA with CCs from different network operators?

[@stevenz995]

Great video! One question: does CA only work well at cell edge? at 2:30 the graph shows a phone communicating with several different cell towers (each cell tower is a eNB right?). I thought CA is about one serving basestation capable of handling multiple carrier components

[@LTE4G]

Thanks Steven. Glad that you asked we also had similar confusion. The answer is No! CA can be implemented anywhere. It can be implemented inside a single cell or inside overlapping cells(where small cells are involved). At cell edge where the performance degrades CA can be used to enhance it. In co-ordinated Multipoint (shall be discussed in upcoming video) you will see how signals from different sites are used constructively to serve user more efficiently. In release 10, the CA IS about one serving basesatation capable of handling multiple carrier components. but in Release 11 the support for multiple time advances was introduced i.e cells belonging to two different Base station. It is mentioned in the video. Happy Learning.

[@RadhaKrishnaArvapally]

presentation method is very good. "writing with pencil". which software did you use for this?

[@MikeJack4Music]

I would like to know as well.

[@artindance2992]

Good video, is there any video on Dual Connectivity ? Why we need dual connectivity , what is the difference between DC & Inter ENB CA. Thanks

[@pedrosalazarortega6375]

Thank you so much for this content! Which book or books you read to make this work come true?

[@lidiejoseph8506]

Very helpful thank you! can you please explain how to know if an LTE device support or does not support CA?

[@yfs9035]

AT&T carrier aggregation is godly on the new Firstnet B14 buildouts, It's 4 or 5X CA. 300Mbps is easy

[@LTE4G]

That's great to hear. Tell us more about it. where exactly has it been deployed?

[@indiacha]

Redmi K50I mobile supports CA. In India telecom giant Jio tested 5g first on this device.

[@CYJOEC]

Two questions dumb perhaps: 1) Isn't SCC eNB too distant for UE to well receive the signal? Thought the UE Rx would be designed to receive the signal within main cell rather than neighboring cell? 2) Can the Antenna operate at two or more carriers simultaneously when running CA?

[@namitaigit]

Hi, Great video! Thanks a lot. Do we have any link available for the slides?

[@sanyambansal]

great work (y) ........ can u provide any ppt or pdf for the same???

[@LTE4G]

Hello Sanyam, Can you please specify your requirement?

[@sanyambansal]

i need to deliver a presentation and it includes the basics of LTE....so any help u could provide will be appreciable!!

[@LTE4G]

+Sanyam Bansal - There are various presentations available all over the internet. You can refer to them. If you have any doubt you can ask us.

[@gyzq]

the diagram is good， but the accent is a bit too strong.

[@LIFE-hm8wp]

If a operator having 3 freq band 2300 1800 and 850 having 20 10 5 mhz freq. What will be the scenario in term of CA in this case. Pls explain.

[@elhorla]

Good Job! I prefer the other voice thou.

[@LTE4G]

+Guillermo Guevara - The robot one or the one in HetNet?

[@elhorla]

Synthetic voice.

[@lieutenantgreen626]

РТФ, привет

[@RadhaKrishnaArvapally]

You are showing 5 CC are from 5 different towers. Is that right?

[@atchutram9894]

This gives an impression that each component carrier is necessarily from different physical eNodeBs. I don't think it is the truth, is it?

[@LTE4G]

+atchut ram - No the component carriers can be of same eNodeB. Sometimes one eNodeB can radiate in different frequency in a particular sector. The different frequencies will have different RRH. In such case the component carriers can be of same eNodeB.

[@akhimakhi93]

Hey I don't understand. So the intra band can have contiguous and non contiguous carriers? Whats the difference between inter and intra. Really confused

[@LTE4G]

+Akhilesh Rao - Yes Intra Band CA can have contiguous as well non contiguous carriers. In simple words Band refers to a chunk of Frequency Spectrum in which the service provider operates. In LTE there can be multiple bands. For example Band 3 refers to 1800MHz-FDD Band, where 1710-1755MHz is used for Uplink and 1805-1880MHz is used for downlink operation. Similarly Band 40 refers to 2300Mhz-Tdd banb, where 2300-2400Mhz is used for operation. You can refer to this link for further clarification. www.radio-electronics.com/info/cellulartelecomms/lte-long-term-evolution/lte-frequency-spectrum.php

[@jyotiarora5649]

nice video....please tell me how to use carrier aggregation in ofdm code

[@LTE4G]

+Jyoti Arora - Can you please elaborate your question?

[@thusharadilruk9670]

What is the better band for PCC?

[@vishnuvardhan0099]

Which textbook can we refer to get more knowledge about LTE

[@LTE4G]

+vishnu vardhan - There are plenty of books available. All the books published by Wiley are good. We refer to them a lot. Happy Learning.

[@HateNothing]

Hi, Is CA possbile between FDD carrier and TDD carrier(Band)?

[@LTE4G]

yes it is possible.

[@bikeshshrestha9550]

Is CA possible between two operators? If yes then is it in use or not?

[@LTE4G]

+Bikesh Shrestha - As of now no. But who knows in future we see it happening

[@RajatSingh-ks1cd]

Will carrier aggregation work if there is congestion in nearby cells??

[@LTE4G]

+Rajat Singh - No it won't. The primary requirement is free Resurce Blocks.

[@RajatSingh-ks1cd]

LTE But RF congestion is caused by high prb

[@LTE4G]

Can you please elaborate your question?

[@RajatSingh-ks1cd]

LTE I want to know that what can we do to mitigate the high prb utilisation issue will planning of small cell help ? Cause In my region there is a highly utilised site and to mitigate the issue we planned a macro site nearby but after radiation of that site the performance of the small cell present in the region started to degrade

[@LTE4G]

In LTE-Advanced there is a feature called Co-Ordinated Multipoint which can be implemented to reduce the Inter Cell interference. We are not RF experts maybe you can consult other experts for a better advice.

[@mohammadalmaazi]

why did you change the lecturer , the language in this video is not clear at all as it's an indian accent. his English is not clear as well as previous videos. dislike for the ambiguity and inability of understanding what's mentioned in this video.

[@kushaljain001]

Anything

[@franciscogerardohernandezr4788]

Is that a guy or a new synthetic voice?

[@LTE4G]

+francisco gerardo hernandez rivera - well that's embarrassing. It's a human this time

[@franciscogerardohernandezr4788]

Thanks, dude. Great job in all presentations.

[@LTE4G]

Lol! We are little confused with your feedback. We thought you didn't like the new voice.

[@franciscogerardohernandezr4788]

Of course I like it, but it did sound a little flat. Great job guys.

[@LTE4G]

Thanks Frank. We are glad that you liked it. Hopefully upcoming videos will have better sound quality. happy learning

[@rezakhajooee2713]

I used to hear a nice voice on this channel videos, but unfortunately, this video uses an awkward accent and I can hardly understand

[@clansman81eg]

Needless music !

[@rajaramachandran9827]

🤮🤮