Session 02/01 : 5G Architecture & Key Principles | Complete 5G Network | Course Overview and History - video Dailymotion

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Video Series 02 : 5G Architecture and Key Principles : Session 01 : Course Overview and a brief telecom History.  Welcome to this comprehensive course on 5G Architecture and Key Principles! Whether you're a beginner or a professional, this course will guide you through the essential concepts of 5G. We’ll cover the history, evolution, and key technologies that make 5G a revolutionary advancement in telecommunications.  This is Session 01 of Series 02 : 5G Architecture & Key Principles | Complete 5G Network  Here’s a sneak peek of what we will cover:  * Brief History of Telecommunications: From the invention of the mobile system to modern 5G networks. * Understanding the Need for 5G: Why 5G is essential and how it differs from earlier generations. * Radio Access Network (RAN) & Core Network: Explore the defining features of 5G architecture. * Evolution of Cellular Networks: A look at 1G to 4G, and how each generation contributed to the development of 5G. * Key Features of 5G Technology: Learn about OFDM, multi-antenna systems, and carrier aggregation, among others. * 5G Use Cases: Discover how 5G will cater to machines, mobile broadband, and more.  Course Structure: * History of Telecommunications: The journey from 0G to 4G and how each generation revolutionized communication. Key technological advancements like AMPS (1G), GSM (2G), W-CDMA (3G), and LTE (4G).  * Introduction to 5G: Why 5G is necessary to handle the growing demand for mobile broadband and machine-to-machine communication. The fundamentals of OFDM (Orthogonal Frequency-Division Multiplexing) in 5G.  * 5G Radio Access Network (RAN): Detailed look at the RAN and how it enables faster, more efficient communication.  * 5G Core Network: Understanding the importance of the core network in enabling advanced  5G features.  * Key Defining Features: OFDMA for wider bandwidth and faster data rates. Multi-antenna systems and Carrier Aggregation for improved connectivity.  * 5G Use Cases: Applications for autonomous vehicles, smart cities, IoT, mobile gaming, and much more.  This course is designed for: * Professionals transitioning from 4G to 5G. * Engineers and developers curious about new aspects of 5G technology. * Anyone from a non-telecom background interested in telecommunications and 5G networks.  By the end of this course, you'll have a solid understanding of 5G technology and its key components. So, let’s dive deep into the world of 5G and explore the cutting-edge advancements that are shaping the future of connectivity.   Subscribe to "Learn And Grow Community"  YouTube : https://www.youtube.com/@LearnAndGrowCommunity LinkedIn Group : https://linkedin.com/company/LearnAndGrowCommunity Follow #LearnAndGrowCommunity    #5g  #5gnetwork  #telecom  #wirelesstechnology  #5GArchitecture #5gcore  #MobileBroadband #telecommunications  #technology #3gpp #rrc #oran #openran #4g #5gsa #5gnsa

Transcript

00:00Hi, welcome to this new learning series.

00:03This is designed to develop a quick understanding on 5G architecture and key principles.

00:08In this learning series, we will give you some high-level overview on 5G technology.

00:13We will start with a brief history of telecommunications, then we will understand that what are the

00:18needs to develop more advanced technologies like currently in 5G and in future 6G or 7G

00:26and so on.

00:27We will understand that what is the necessity and how 5G can be used in various applications.

00:34Then we will see the most important building blocks of the 5G radio access networks and

00:395G core networks, which plays the important role to fulfill the wide use cases of 5G.

00:46If you are already familiar with 4G technology, then may be curious that what 5G comes with

00:51as an enhancement compared to the 4G technology or maybe you are already working with certain

00:57aspects of 5G but wanted to expand your understanding on the other aspects or other areas or if

01:04you are completely new to the telecom field and wanted to explore the telecom world, no

01:09matter where you are on your learning journey, we are here to take the next step together

01:14as we will explore the fundamental principles of 5G in this learning series.

01:19The purpose of this course is to deliver the concepts of important fundamentals and key

01:24principles which are evolved in 5G systems.

01:28We will also understand that what new techniques are introduced in 5G to cater the wide use

01:33cases of 5G.

01:35So let's get started.

01:37We will begin with a quick overview from the history of telecommunication because if you

01:42do not understand the past, you may not connect with the current evolutions and future demands.

01:47So it is important to understand but we will not go in deep.

01:51So in the era of 1900, landline phones were common around the world.

01:56That was the first step in telecommunications.

01:59By 1930s, the first mobile phone was invented and that actually had wireless support and

02:05that was the start of the wireless domain, generally called as Zero-G.

02:11These mobile phones were using a very basic feature, that is, push-to-talk.

02:16So the communication happened through two-way radio connections between a network and a

02:20car-mounted transceivers.

02:22At that time, we have huge transmission towers and they cover large areas.

02:28It is near around 20 miles in radius and that area was called mobile service areas.

02:35Frequency reuse concept also started to use at every 100 miles but the key challenge was

02:41that service providers had to manually connect the calls to the regular phone networks.

02:46So operators have a lot of manual monitoring and they also manages the channels which are

02:51being used for communication.

02:53So it was another challenge.

02:56Those communications was started from 36 MHz band and it hardly have 10 to 30 channels

03:02only.

03:03Means those systems can only accommodate very few users.

03:07Now during 1970s and early 80s, the demand was increased and user had to wait for their

03:14turn to get the mobile services.

03:17And surprisingly, that waiting list reaches up to 3 years of waiting period.

03:22And that shows the demand.

03:23That why we are needing the advanced wireless telecommunication systems.

03:28Now in 1980s, Bell Labs introduced AMPS, that is Advanced Mobile Phone Systems.

03:36This is also known as 1G or First Generation of Cellular Telecommunication.

03:42This new technology allows simultaneous talking.

03:45So we moved from push-to-talk kind of system to the AMPS system.

03:50And that was a great improvement from the previous generation.

03:531G also introduced automatic channel selection.

03:56So things gets easier for service providers.

04:00This innovation was the base of wireless communications.

04:03And now more people can experience a true mobile communications.

04:07AMPS uses analog technology.

04:10And it was using Frequency Division Multiple Access or FTMA.

04:15So each communication happens over separate 30kHz frequency channel.

04:20Now another problem is bandwidth requirement.

04:23Because now more users are expected to use mobile services.

04:26So to fulfill that need, FCC allocate the frequency spectrum from 824MHz to 894MHz.

04:35So this bandwidth can accommodate around 666 channels.

04:40Another important advancement was in coverage area.

04:43Now because AMPS started to use hexagonal cells to serve the Mobile Service Area or

04:48MSA, instead of using one single cell to serve circular radius in previous technology.

04:54Also those 666 available channels were distributed between 7 cells.

04:59And each cell having its own set of channels.

05:03Now these 7 cells collectively using 666 channels.

05:08And then frequency gets reused for additional set of 7 cells.

05:13This concept was the origin of cellular communication.

05:16However AMPS technology has many challenges.

05:20Like poor voice quality, short on battery life, bulky devices, unreliable hand-offs

05:25and weak securities etc.

05:28So when the rollout of AMPS was started, just soon after that new innovations get started

05:34on digital cellular communications.

05:37And in 1987, 13 European countries agreed to create a common cellular telephone system

05:42across the Europe, which refers to the GSM specifications from ETSI.

05:48And then GSM was commercially launched in Finland in 1991.

05:52GSM was using TDMA and FDMA based multiple access technologies.

05:58And because of this advancement, it allows more users to serve from the same resources.

06:03TDMA or Time Division Multiple Access is the concept where different users share the

06:09same frequency resource but at different time slots.

06:13Those digital systems also support new services like texting and even picture messaging, although

06:19they were at very low speeds.

06:21This was further evolved by introducing a new domain called as Packet Switch Domain.

06:27This was an addition to the Circuit Switch Domain, which is sometimes referred to as

06:312.5G or ADS.

06:34This offered better services to the ad users and now they can use it for more services

06:40like sending emails, receiving emails etc.

06:43And even web browsing was possible at a speed of 64 kbps to 144 kbps.

06:50In 2008 or 2009, LTE was introduced and now it was a fully Packet Switch technology.

06:56And that was the start of 4G.

06:59It is interesting to note that each generation of technology is sometimes referred by the

07:03name of radio access technology behind the generation.

07:06For example, 3G is known as WCDMA and 4G is called LTE and 5G is called New Radio NR.

07:154G supports the bandwidth from 1.4 MHz to 20 MHz.

07:214G uses OFDMA technology in the downlink and single carrier FDMA in the uplink.

07:27OFDMA is a multiple access technology where a wideband carrier is split into many narrowband

07:34subcarriers and they act as individual channels.

07:38And because of that, we can have wideband data rates that offers high data rates and

07:43throughput.

07:44At the same time, we can also use the benefit of better propagation characteristics from

07:49narrowband channels.

07:504G offers good broadband data rates and because of that, it is generally referred as the generation

07:56of mobile broadband.

07:58As an advancement in 4G, it also introduced different new concepts to even boost the data

08:03rate.

08:04For example, multi-antenna systems and carrier aggregation techniques, etc.

08:10It also enabled new services like high-definition mobile TV streaming, mobile gaming, etc.

08:17Now as technology evolved and new services offered, as a result, more and more devices

08:22were started accessing the mobile internet and it is still growing in the present time

08:27as well.

08:28So, to meet those growing demands and to cater such huge number of devices and users, we

08:34are needing more advancement and hence we are needing new generation of systems.

08:40And hence 5G standards started developing and it is still evolving.

08:455G supports up to 400 MHz of bandwidth and it is huge.

08:505G continues to use OFDMA-based interface.

08:54In this course, we will be discussing majority of the key components that contribute in 5G.

09:00In the next session, we will be talking about why 5G is needed and we will understand that

09:05why 4G is not enough to cater the future requirements and what are the 5G use cases.

09:12So stay tuned for the updates.

09:13If you did not subscribe till now, then please do subscribe to learn and grow community for

09:17regular updates.

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Session 02/01 : 5G Architecture & Key Principles | Complete 5G Network | Course Overview and History

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