Introduces the key elements of the LTE and EPC architecture. Network elements and interfaces between them. The roaming and non-roaming architecture. Slides at: github.com/irf...
Irfan, Thank you very much for explaining the network architecture. Simple, and direct. Its been a while since I have been doing network architecture thus your presentation help me re-review things fast and clear. Keep it up, brother!
I havn't gone through many lectures on LTE but whatever I watched this is the simplest and informative one. Thank you so much for such a good lecture. Requesting to make videos on PCI planning, LTE Channels & Signalling.
now in 2021 or 4 years efter this video. i realize that your matery is so solid . i can understand in easy way about that stuff. please share the slide Master, i need it because i love it. Thankyou so much :)
Hi Huang. Lets take the PGW first. Typically the PGW is located in the data center of the operator and typically in the city where the operator has a connection to the internet (internet exchange point). This may not be in the same city where the eNBs are located. So if there is no SGW, at each inter-eNB Handover signaling will need to be sent all the way to the PGW. By having an SGW in the city where the eNBs are located, reduces the signaling path. In roaming scenario, with home-routed traffic (PGW in the home county, eNBs in the visited countries), the need for SGW is even more important. For HSS, all authentication occurs by the MME itself. eNBs never communicate directly with HSS. All subscriber authentication is performed by MME (eNB is not aware of any subscribe authentication). Hope this helps.
Thank you very much for uploading this video. If the UE do intra HO ,Is there signalling between MME and eNodeB ? or eNodeB can handle this by itself without the help of MME.
Hi Arun. For an intra-eNB handover (i.e between two cells (sectors) of the same eNB), there is typically no signaling with the MME. If location services (information about the cell ID where the UE is location) has been turned on for the UE, the eNB may cell ID (ECGI) to the MME. But the eNB does not need to interact with MME to execute the handover.
I have been looking for tutorial like this from years, thankfully TH-cam recommended it.
By far the best explanation on TH-cam. Thank you :)
First video on the topic that simply explains the evolution of the network from the bottom up. Good job.
The best explanation of lte on TH-cam. Thank you :)
Irfan, Thank you very much for explaining the network architecture. Simple, and direct. Its been a while since I have been doing network architecture thus your presentation help me re-review things fast and clear. Keep it up, brother!
This is the best explanation. What a great teacher. It would be valuable if similar series if you can share for 5G.
I havn't gone through many lectures on LTE but whatever I watched this is the simplest and informative one. Thank you so much for such a good lecture. Requesting to make videos on PCI planning, LTE Channels & Signalling.
Very good introduction and explanation! Thanks.
best one on youtube.
now in 2021 or 4 years efter this video. i realize that your matery is so solid . i can understand in easy way about that stuff. please share the slide Master, i need it because i love it. Thankyou so much :)
yes...very Organized and easy to learn and listen.
too good explaination..its always easy to understand any concept with help of some example..thanks a lot!
*Speechless *
The best video ever!!!!!!! Thank you^^
Easy, comfortable and complete explanation. Thank you
thank you for your videos
Fine diagrams and very pedagogical
this is one of the simplest video explanation on 4G architecture
Absolutely loved it. Thank you and keep up this good work
Thank you very much!!
Very informative and easy to follow! Just one side note, HSS stands for Home Subscriber Server, not Sub-system.
Awesome presentation
Lots of questions you were supposed to answer, how does MME locate home network?
Wonderful explanation, MashaAllaah. Thank you!
Thank you very much for uploading this video. pls upload some video related to ims and supplementary services... thanks
Gud vedio Thankx a lot.
Thank u soo much
perfect explanation, thanks
best !!
Nice explanation
awesome videos !! can you help me to learn lte protocol stack development, from where to get started and how to, mainly
thank you so much sir very nice explaination
GREAT PLEASE SHARE SOME MORE TECHNICAL ABOUT CORE NETWORK.
good explanation thank you!
Please share vedio on raching process.
Please share vedio on layers.
How many type or Roaminh
Why we need hide the moving from the PGW and HSS, and introduce SGW and MME?
Hi Huang. Lets take the PGW first. Typically the PGW is located in the data center of the operator and typically in the city where the operator has a connection to the internet (internet exchange point). This may not be in the same city where the eNBs are located. So if there is no SGW, at each inter-eNB Handover signaling will need to be sent all the way to the PGW. By having an SGW in the city where the eNBs are located, reduces the signaling path. In roaming scenario, with home-routed traffic (PGW in the home county, eNBs in the visited countries), the need for SGW is even more important. For HSS, all authentication occurs by the MME itself. eNBs never communicate directly with HSS. All subscriber authentication is performed by MME (eNB is not aware of any subscribe authentication). Hope this helps.
Salim from Kashmir
Good explanation, but you never mentioned PCRF part, which is one of the important EPC part..
Hi Hemin, I hope to get to the PCRF in the QoS part of the lecture. I agree PCRF is important for VoLTE.
great, eagerly waiting :)
Thank you very much for uploading this video. If the UE do intra HO ,Is there signalling between MME and eNodeB ? or eNodeB can handle this by itself without the help of MME.
Hi Arun. For an intra-eNB handover (i.e between two cells (sectors) of the same eNB), there is typically no signaling with the MME. If location services (information about the cell ID where the UE is location) has been turned on for the UE, the eNB may cell ID (ECGI) to the MME. But the eNB does not need to interact with MME to execute the handover.
Thank you
For anyone looking for the video referenced near the end of this lecture: th-cam.com/video/mkaeU-8b2jE/w-d-xo.html
HSS should stand for Home Subscriber Server.
Thanks Derek. You are right. Will make a note of this.
great job keep it up (would like to be TH-cam friend)