• 3 months ago
Video Series 02 : 5G Architecture and Key Principles :
Session 02 : Understand Why we need 5G and why 4G is not enough for future requirements and future demands. What are the limitations with 4G Network and What are the new 5G use-cases.

In this video, we dive deep into why 5G is the future of telecommunications and how it builds on the foundations of 4G. While 4G gave us mobile broadband and high-speed internet, 5G is designed to support the increasing demand for data and the rise of connected devices like the Internet of Things (IoT).

This video covers:

* Why 5G is Essential: Understand the rapid growth in the number of connected devices and how 5G addresses the limitations of 4G.
* Key Trends in Telecommunications: Explore the dramatic rise in subscriptions, data consumption, and the growth of machine-to-machine connections.
* METIS 2020 Goals for 5G: Learn about the ambitious targets set for 5G, including 1000x higher data volumes, reduced latency, and longer battery life for IoT devices.
* How 5G Differs from 4G: Discover the major use-cases that set 5G apart from 4G, including enhanced mobile broadband, fixed wireless access, massive machine-type communications, and ultra-reliable low-latency communications.

5G Use-Cases Explained:
* Enhanced Mobile Broadband: Explore new possibilities with 5G for streaming 4K/8K videos, virtual reality, and even cloud gaming.
* Fixed Wireless Access (FWA): Learn how 5G can provide reliable broadband to suburban and rural areas where traditional internet is lacking.
* Massive Machine-Type Communications (mMTC): Discover how 5G will support billions of low-power, long-battery-life devices like sensors and IoT gadgets.
* Ultra-Reliable Low Latency Communications (uRLLC): Understand the critical applications of 5G in industries like remote surgery and autonomous vehicles.

This video explains why 5G is not just an upgrade from 4G but a revolution in how we connect people and machines. 5G brings unprecedented network capabilities to support a wide range of applications beyond just mobile broadband.

Key Points:
* Growth of subscribers from 8 billion in 2018.
* Rapid rise in data consumption and IoT connections (from 1 billion to 4 billion devices in a few years).
* 5G’s capacity to handle 1000x more data, 10-100x more connected devices, and significantly reduced latency.
* 5G’s role in enabling smart cities, autonomous vehicles, and IoT applications.


Whether you're a tech enthusiast, telecom professional, or just curious about the future of communication, this video gives you a clear understanding of why 5G is the next big leap in network technology.


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Transcript
00:00Hi, in the last session we introduced telecom industry in very brief and we go through a
00:05very short telecom development history.
00:08Now in this session we will try to understand that why we need 5G and why 4G is not enough
00:14to cater our future requirements and we will also talk about major 5G use cases.
00:20So why 5G is actually needed?
00:23To answer this let's explore some key trends in the telecommunications.
00:28First let's consider the number of mobile subscribers.
00:31The number of mobile subscribers are increasing rapidly.
00:35In 2018 when there was a global population of 7 billion people there was already 8 billion
00:41mobile subscriptions and those numbers are actually growing very fast and they continues
00:46to increase in 2024 as well.
00:49Alongside this growth in subscriptions the amount of data which is being consumed by
00:54subscribers is also growing very fast.
00:57So this creates a strong need for a network that can handle this massive traffic in more
01:02efficient way.
01:04Additionally the number of IoT devices or Internet of Things connections are increasing
01:09rapidly.
01:10So it's not just people who are connecting to the internet but machines are also joining.
01:16So in the upcoming years the number of connected devices is expected to grow by 4 times from
01:22now.
01:23Also to address this huge expected demand there is a group called MATIS group or M-E-T-I-S
01:29group.
01:30This is Mobile and Wireless Communication Enablers for 2020 Information Society.
01:35They outlined the requirements for a new network concept during 2013.
01:39So a new development and new concept must align to meet those technical goals which
01:44are set by MATIS.
01:47These goals were set in 2013 and they are related to the future network performances.
01:52This includes supporting 1000 times more mobile data per area.
01:57The new network should also support 10 to 100 times more connected devices.
02:02New network system should also offer 10 to 100 times faster data rates for users.
02:08Another goal was to achieve 10 times longer battery life for the low power devices especially
02:14for the massive machine type communication related devices.
02:17They aim to reduce the latency by 5 times which will improve the end-to-end communication
02:22speeds.
02:24Most importantly these improvements must be achieved with the new technology without increasing
02:29cost and energy consumptions compared to the 2013 labels.
02:34Other organizations in the world of telecommunications also have similar vision for the future.
02:40For example here is a vision from 5GPP for the future where not just people but entire
02:46cities or infrastructures, homes and devices are fully connected with each other and they
02:52will empower their maximum potential.
02:55And this brings us to the question that what exactly is 5G?
02:59Well I will say that 5G is not just one technology but it's a collection of technologies which
03:07are designed to deliver the advanced network performance which we have just discussed and
03:12it supports a wide range of new use cases.
03:155G introduced a new air interface called New Radio or NR and this will work along with
03:22a completely new network architecture.
03:25New concepts were also developed like network slicing, massive MIMO, bandwidth path, numerology
03:31selections and many more new things.
03:34Ok so now let's move to the 5G use cases but before this we need an overview that how
03:40exactly 5G will be used and how does it differ from the 4G network.
03:45In the starting, 4G mainly supports mobile broadband which allowed us to do things like
03:50checking emails, browsing the web, streaming videos and listening to music, downloading
03:56contents etc. and this kind of stuff.
03:59But 5G expands on this by introducing four major categories of use cases, each use case
04:06offering new possibilities beyond what 4G can do.
04:10The first use case is enhanced mobile broadband which is most straightforward.
04:15As people continue to use more broadband services, 5G will enable even higher quality experience
04:21like streaming 4K and 8K videos and even 360 degree videos, watching virtual reality contents
04:28and augmented reality contents, playing or streaming video games etc. and all these with
04:34faster speeds and more reliability.
04:37The second use case is fixed wireless access.
04:39Well, 50% of the world's population is still waiting for a reliable broadband and internet
04:45connections and that still depends on fixed wired connections like fiber at home etc.
04:52This is particularly in suburban and rural areas.
04:555G can help us here by allowing telecom companies to use their existing cellular infrastructures
05:02to deliver broadband and high-speed internet services to those users, of course with more
05:07reliability.
05:08For example, here you can see a typical scenario where the spectrum assets owned by some operator
05:14is underutilized in suburban and rural areas.
05:18They can use this unused spectrum and existing sites to provide a fixed wireless access through
05:24a device called CPE.
05:26This is customer premises equipment.
05:29This device connects to the 5G network and offers Wi-Fi or Ethernet to the home devices
05:34just like a Wi-Fi hotspot device.
05:37And this can become the main source of internet in the future.
05:40Hence, fixed wireless access also provides an additional way to generate revenue for
05:46the telecom operators on top of their mobile broadband revenues.
05:50The third use case is massive machine-type communications.
05:54You may think about the sensors that are installed in your vehicles or homes or offices
06:00and they capture the relative information and send it to the host or communicating with
06:05each other.
06:06Or maybe they are installed in vehicles and track the location of your device.
06:11Or think that these sensors are set up in your garden and monitor the environmental
06:16conditions like humidity, wetness of soil, sunlight etc.
06:22These sensors sense a small amount of infrequent data so we can control the power consumption
06:27of such devices and the expectation from such devices is to have a long battery life like
06:33many years from just a couple of batteries.
06:36This category of devices are expected to be in huge numbers in future and 5G is designed
06:42to handle a large number of those devices within a single area which make it perfect
06:47for smart cities, agricultural areas and other applications where many devices need
06:53to communicate with each other.
06:55The fourth use case is ultra-reliable low-latency communications.
06:59To understand this, take an example that there is a surgical robot in a hospital and one
07:05surgeon is controlling that robot from a remote location.
07:08Then the connection between these two points plays a very important role.
07:13So during a surgery, the connection needs to be extremely reliable with no downtime
07:19because even a small interruption in the connection can disturb the whole operation.
07:24Secondly, the network also must have very low latency so there would be no delay in
07:29the robot response.
07:31This type of communication is essential for critical applications like remote surgery
07:36or self-driving cars etc. where reliability and speeds are very crucial because it will
07:43be very difficult to perform a surgery when the robot has a huge lag from the controlling
07:47point.
07:49This kind of applications are called ultra-reliable low-latency communication and this type of
07:54communication will also serve 5G.
07:57In conclusion, 5G is designed to serve different use cases.
08:02These are beyond from the mobile broadband use case so 5G going to handle some very fascinating
08:08and challenging use cases in future.
08:115G is not just about faster mobile internet but it opens up a wide range of new and exciting
08:18possibilities from enhanced mobile broadband to support a vast number of connected devices
08:23and even it will enable to support critical applications like remote surgeries and self-driving
08:29cars etc.
08:31So that's it for today.
08:32In the next session, we will be talking about 5G systems and a brief about the control plane
08:37and user plane and control plane and user plane separations or CUPS.
08:42So stay tuned for the updates.
08:44If you did not subscribe till now, then please do subscribe to learn and grow community for
08:48regular updates.
08:49If this video is informative, then please like this video, comment on video and don't
08:53forget to share.

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