 So I am from South Korea just for those who are not so familiar with my company as K telecom we are The leading operator to one operator in Korea both fixed and mobile combined occupying approximately 50% market share and we also one of the three IPTV service providers And now we are pursuing and moving forward to the next era, which is 5G so even if the 5G first global Specification is still under development and expected to be done by the end of hopefully this year and then The major rollout worldwide rollout probably will start to begin like year 2020 or later on but You know this year 2017 it seems to be a very important milestone as far as a 5G Community operator community concerns because you will see you will see the rear Trial services sometime this year and here and there here in America and in Korea You know, so this is a major Milestone and we are very much excited But knowing that the ecosystem is not fully ready yet. We have to fully understand what risk is what risk is We are dealing with so So today I'm gonna use my presentation to explain you about our thoughts about What part I'm shift we try to institute during the course of a 5G network rollout so Starting from this slice. I presume that these are the key initiative we are pursuing Most of you are already familiar with all these that you know keywords so unbundling open source Softwareization and cloudification. Those are the four major initiatives that we try to You know implement embrace Because this is a perfect opportunity for us to change our track network architectures and Do things right this time, right? So Open source, you know, you know what that means softwareization cloudification very straightforward Unbundling is very tricky things, you know, and a lot of unbundling or democratization is already done On the data center side they an open source community has an excellent job including hardware and software democratizing the you know conventional data center and transform it to a very You know flexible and agile programmer and operation-efficient cloud systems and Open source community You really must be very proud of it. You are the one who actually make that happens But can you expect the same unbundling democratization on the opposite side, which is a Radio access network side, which actually the major portion of operator TCO total cost of ownership Because you know when you speak when you talk about ready access unit you have to deal with the many many operation problems including sales side equation and Installing the equipments antennas and do the Calibrations and also you have to regularly dispatch your engineers making sure everything is operating well so that make things are very difficult for operators to You know to aggressively Go for the you know access network unbundling, but it's time to To make it happen. So we ask a telecom together with the other operator friends we started the unbundling many unbundling project here and there and Open source Technologies also is gonna be a very crucial ingredient doing so But what makes a unbundling difficult then other area other? Domain is because the specification is not being developed here It's being developed by other community, which is a 3gpp and very into semi-open community But anyway, it's and also the specification is very heavy and you have to make sure you have support And all backwater compatibility for the compatibility and also the existing network equipment Vendors They are trying very hard change try to change themselves and try to be become more IT centric vendors, but then still there's a lot of not just the technical challenges, but also culture challenges and operation challenges, so I'm gonna address that later on and So We came up as a telco. We came up with the two important architectures namely this S scale and cost cosmos So on the right-hand side bottom you see, you know, S scale and cosmos so S scale. It's a overlay Network architectures, whereas the commerce cosmos is a underlay You know, cloudify the software eyes, you know, software eyes the platform architectures. I'll talk about that So here's the whole borrower picture of what I've this right what I mentioned a scale and cosmos So as you know, if you're a key Operating exactly to what concern you have, you know, when it comes to You know May making a decision on the big investments like a 5g one is you want to Achieve Agile new service introductions new service introductions So that's one important agenda second is a Significant TCO Efficiency and savings like I said access network comprise most part of a whole TCO. So you have to You have to you have to you know be very cautious on that and And last but not least is the consumer experience quality or satisfaction So those are the three priorities in top of mine, you know in in their mind the executive mind So how our SKT's architectures, you know, S scale and cosmos combined can can deliver that that Achieve that targets so S scale like I said is a overlay architectures It's comprised next generation OSS which is big big data analytics based and And networking slicing and software defined rent as to rent and software defined their core software defined core is relatively straightforward because Thanks to the SDN and NPP technology. Whereas software defined the rent is very I'd like to say tricky because it's a it's not especially the front whole side back whole side still a lot of You know close the architectures. It's supposed to be open architecture, but in reality It's not that often yet so we need to democratize all these Interfaces between the different building blocks horizontally and vertically and you know control plane user plane I You know personally, I'd like to introduce a new plane called the radio plane Which is a less addressed during the whole summit here this week so And the cosmos is our software defined interest infrastructure is not just the open source hardware But also it's just software defined infrastructures based on open hardware and softwares So this is a more detailed Diagram so And let me skip this but I'd like to emphasize the importance of in 5g how we we we How we should Do the function splitting between the access net line in the centralized the access unit and the remote unit So remote unit up until 4g or its evolution So we only have just a RF component there and use the very expensive fiber-based front all To transmit receive the and digitize the RPS signals to the sent data processing unit and There is a high performance constraint on the foot on the front hole today So So it's gonna be important In 5g we have to loosen up all those performance constraints so that we can replace it or with the the commodity Front hole such as a carrier ethernet so And then to achieve that you have to be very what I know You have to be very smart splitting the functionalities for the basement processing So you have to move some portion of L1 processing to the radio Remote unit side and then leave some functionalities on that's data processing side But you want to centralize data set the same data You know these three units today you you want to centralize it to the extent possible, right? So that part is a very tricky so and What else so I mean You know in the conventional cloud architectures There are three resources you are dealing with right the compute and Storage and network, but you forgot to incorporate the radio as a No resources one of the resources you have managed Because of that your cloud architectures cannot penetrate into the access network today, so You have to introduce this radio resource as a part of your You know resource pulling mechanisms, so otherwise You know you can not properly address the 10 access access radio access domain So Yeah, yeah, I'd like to emphasize that the significance of all those things so to Because the radio is the most precious Asset and resources from mobile operator perspective first. It's very expensive to acquire second is may get even more expensive and third is the more spectrum you have the more Front-haul backworld networks you need but that's requires a huge TCO increase month So overall, you know more spectrum means more TCOs. So how you can? deal with you know this kind of a Undesirable TCO increase so if you do things right and if you properly embrace the radio resource as part of your You know cloud resource management framework then you can do much better job and There won't be any customizations today's you know to embrace the cloud You know all the innovations done in data center can be applied To the ready access unit But it requires a lot of customizations because there is no research radio resource management scheme there So and escape, you know this line is very busy. It's pretty much self-explanatory But this week, you know, I recognize that This radio side is less Addressed than any other topics. So Once again, I'd like to you know underline the importance of addressing this space because that this is the where you can Find the huge business opportunities and also technology innovations and also more healthful healthy ecosystem cultivations So our ready access network software defined ready access network Initiative comprise the fiber projects Open front home like I said and modular radio remote access unit and control plane user plane separation through a standard interface X-RAN there is activity called the X-RAN they've done a good job To make it this this this happened and they introduced this kind of a notion of a rent server which is a very good and The third is open hardware software I mean the white box bare matter OCP compliant hardware is a it's a very appropriate But still they are lack of a certain requirements that mobile operator need, you know, so like a you know 69 reliability or something like that So still there is some areas that needs to be further Improved, you know, the you know of mobile operator to truth You know more aggressively adopted the open hardware software a lot and the mobile edge computing, you know Someone also introduced the mobile edge computing So it's not a mobile edge computing. It's a multiple access edge computing meaning that you can multiple Access edge computing can embrace not just the mobile but also fixed line any media broadcasting line, you know Broadcasting network, so it's a the concept is being or broaden today and But last last but not least is a analytics space the self-organizing network. This is the Area, this is the domain that your machine learning technology can be fully exploited and life cycle management and to end the slicing it's to come to be this life. So let me skip it and Cosmos is on the lay Architectures that I mean just mentioned so it looks like a conventional cloud architectures, but we we have done some customizations to to Use this to cloud the conventional architectures for the mobile network. So and Open source we we Have been taking advantage of all this in a variety of open source solutions and I'm gonna spend few minutes, you know SK telecoms activities and In the space of open source community. So we are participating into many many Different open source community including on us court OCP, TIP, which happened, you know that currently sharing the boat And the open stack and the opnf will be an X-Ran Maybe on app too, I Haven't decided yet, but it looks quite promising to me. So I'm not so this is mCourt. We together with our operator and very, you know, and Vendor or innovators support we are able to successfully showcase this at the mobile world of Congress March this year and we I strongly believe that we gain a lot of attractions and It proves that this kind of a you know new architecture open source space You know ready acts, you know Mobile network Works well not just a functionally, but also operation wise And we are very proud of being part of this pioneering companies and There are some real business cases and use cases This is very important to When you talk to your your supervisors Because 5g really will require a huge investment capex and OPEC so It's it's it's very important you have to come up with some compelling stories and also you have to you know with this kind of a Understanding about what business opportunities you can achieve out of 5g you can feel more comfortable as an engineer So you can do your job better right once you feel more confident and We are also actively participating in some other open source project as well kubernetes and sep especially the kuban this kubernetes side we decided to use it for our you know cloud systems and Also sep is our flash storage Softly find the storage solutions previously. It's custom. It's optimized for the hard disk but now we are trying to donate our code so that it can much more optimized for the now more new storage systems, which is a Flash-based and tip like I said, I'm currently are sharing these activities and very proud of it and you know, we have a very good partner of Colleague operators like a dice telecom and And also, you know a lot of operators other operators start to join it including telephonic a orange a bottle phone And bt and some others so it's a it's a good organically growing and also Functionally, it's also growing as well so there is many new project group today and as you can see on this chart the lab the Right-hand side means the access network and Left-hand side Sorry left-hand side is access network from your side and right-hand side is is a core network and in the middle It's a backhoe so as you see we have a many more Project group on the access side meaning that we are truly focusing on this access network democratization and unbundling and embracing the open source hardware and software So we are very excited about it This you know every year we are holding a almost tip summit. So You it would be a welcome if you know join us and Like I said for the bundling project is one of the focusing areas We are doing and tip. So here Explaining the how we can split the functions between the different Units and also how we can split and make it open interface Horizontally and vertically there are some you know alternative Architecture choices here, you know type one and type two So depending on what your network or our strategy and vendor partners you can adapt to different alternatives different types and We put together So it's not just a paper technology or concept technology. We actually built prototype and POC and and successfully demonstrated and you know we have a very Very important technology companies in this in this pictures such as a radicis I think yeah, this is pretty much about it Like I said, I'd like to re-emphasize the importance of what matters for the mobile operators one is a TCO Innovations so with 5g can you achieve that my answer is yes Because 5g architecture will be much more simplified, right? so LTE and all the way up to the Today's mobile network is pretty complicated You know, it was a streamline when we introduced the LTE, but still the complexity is there So we have to further or significantly streamline the mobile network You know in 5g era and we are working on it collectively and secondly is a new service introductions should be as a as a so we built a transform our service network service infrastructure Become to become a gel programmable and reliable So DevOps environment perfectly fit into this strategies And last but not least is a end user or customer experience how we can satisfy how you can surprise how you can You know impress your customer how so that you can acquire new customer and also keep retain your existing customers So we to achieve all these three goals, you know 5g Network principle has to be designed properly to To embrace all this technology innovations being happening in in this community Thank you. Thank you for your attention Do we have questions or does everybody want to go home? You're not going to be popular though As long as everybody gets more knowledgeable. I'm okay. Good answer. You get a discount next year. Sure Okay, Raghu from Sienna When we listen to the enterprise presentation from Amadeus Some of the drivers included the enormous Number of changes that they have to handle per day per month and the number of transactions that they have to handle as a basis for Going down the software defined networking approach From a telco operator mobile operator perspective What is the scale of changes that you Have at this point in time that you could not achieve and we would like to achieve for example And the second aspect is when you are trying to think of new service introduction What kind of time scales do you anticipate needing as you look into the future of the VR AR kind of services So how responsive should the network be going forward? Yeah, okay, so My answer to your first question scalability matters a lot to the operators For many reasons one The traffic demand is growing exponentially, you know average data consumption per month per you know user last year You know LTE it's like a two two point five or three gigabyte per month per users Now this year one year later. It's already doubled and The growth rate is increasing rapidly. So You you have to make sure that your network capacity and cell capacity Has to be scalable, right? So scale scalability matters a lot and to make your access networks is Scalable as possible we have to embrace the this kind of a you know Softierization and cloudification. I mean you can reproduce your precious radio resources by Densifying your cell site, but like I said, it also associated many You know cost Equation cost and site management cost. So yeah, so that's you know, that's that's what matters things very difficult for the scalability to Guarantee the scalability, but anyway, you know, we have a we feel very confident that so far we managed to accommodate all this rapidly increasing traffic demand mainly in the space of mobile media and From subscriber perspective, you may set You know in a saturated market, there is no subscription increase month, which is not true because IOT Connected the car. There are many things still needs New connectivity. So if you count them Again, the number of subscribers will increase significantly. So these are the our scalability commas and to answer your next second question, how fast should we Expect the new service introduction. I mean if you're radically or ultimately should be a real time on demand and You know just like to compete against the What they are providing the what OTT providing we had to our speed has to be compatible so that's our Target, right very good. Thank you very much. Thank you. Thank you