6 months ago


Lecture 3 on 26.9.2017,

Lecture 3 on 26.9.2017, 10-12, AS2: Towards Softwarization of Mobile Networks and Content Delivery Platforms Towards Softwarization of Mobile Networks and Content Delivery Platforms Today we talked about 5G and its requirements. I did my bachelor thesis related to requirements of 5G so today’s topic was very familiar to me. This also made the lecture easy to follow since most of the topics were familiar to me. A. Lesson learned Today I learnt about network softwarization which was a new concept for me. It is an overall transformation trend and the idea is to make the network more flexible and simple by changing the trend of designing, implementing and deploying NW equipment and components. It can be achieved by SW programming. Its main task is to isolate and separate different network slices, how and what type of resource and NF sharing can be used between NW slices and how to enable multiple services from slices at the same time to user. Slicing was another new concept for me. It enables a network operator to provide dedicated virtual networks with functionality specific to the server or to user over common network infrastructure. So, slicing allows multiple virtual networks to be created on top of a common shared physical infrastructure. Network is not always optimal to different services so slicing will be very important in the future. For example, in 5G, a single physical network will be sliced into multiple virtual networks that can support different radio access networks (RANS), or different service types running across a single RAN. This will make 5G more flexible and agile compared to older mobile technologies. There will be more and more services in the future so this kind of “slicing technology” will be vital to make these services to work. B. Problems and open issues There were not many things that I did not understand. EPCaaS Architecture Options was one thing that went over my head. I tried to google it but without a success. There were a few figures which tried to explain it but I did not understand the idea of this concept. C. Relevance 5G will be a huge thing for us. It will increase data rates, decrease latency and bring us more services since it will be more diverse and it can handle more traffic than technologies that we have now. 5G has also very important role on my studies since it will be the next “big thing” in communication engineering field. I did my bachelor thesis about 5G and its physical layer and we have studied 5G technology in our courses so I am able to apply easily this knowledge to my studies. 4

Lecture 4 on 3.10.2017, 10-12, AS2: SOFIE meets blocks — IoT federation and blockchains SOFIE meets blocks — IoT federation and blockchains Today we talked about IoT federation and blockchains. Blockchains were familiar to me because I have selfstudied bitcoin and other virtual currencies and blockchains are heavily related to them. A. Lesson learned First thing that I heard was that bitcoin will collapse at some point. I have heard the same thing from many different sources but it is interesting to see when this collapse will happen because at the moment the value of bitcoin is increasing. Nakatomo and Byzantine consensuses were new terms for me and both are relevant in Bitcoin and other crypto currencies. Since the bitcoin network works in parallel it need to overcome the Byzantine failures and to reach a coherent global view of the system state. Nakatomo protocol tries to solve Byzantine problem. Nakatomo is the name for Bitcoin’s decentralized, pseudonymous consensus protocol and it is the key to Bitcoin’s success. It doesn’t require any trusted parties or pre-assumed identities among the participants. These terms were hard to understand in the lecture but I self-learnt them after the lecture since this subject is very interesting. Another thing that I learnt was that there are closed and open platforms. A platform structure consists of 4 blocks (producers, seeds, consumers and market maker or the owner) Magnet brings consumers and producers to the board. It can be design or functionality of the product. There is also a matchmaker that allows to match the needs of consumers to what producers have to offer. It can be for example reputation and trust. Open business platform is a decentralized platform. It means that it is owned by nobody. This kind of platform brings more profit to developers since they don’t have to pay royalties. For example, Spotify is not open business platform since Spotify pays royalties to artists. That is why I think that in the future there will be more and more open platforms for different artist since then the money from consumers goes straight to artists. We talked about the Sofie project. I have not heard about it before so it was interesting concept. It lasts 3 years and it is some kind of research project which has an impact on many different fields such as reality gaming, energy (smart contracts to buy energy) and food chain. I tried to find more information from the Internet but it was very difficult. B. Problems and open issues We talked about bitcoins but I would have been interesting to hear about other crypto currencies since they are in the center of attention at the moment. For example, it would have been interesting to hear the differences between Bitcoin and Ethereum. At the end of the lecture we talked about Valuecraft. I did not understand that it is or it was some kind of project but the point of the project was difficult to understand. 5