What Is Long Term Evolution (LTE) and Fourth Generation (4G)?

What Is Long Term Evolution (LTE) and Fourth Generation (4G)?

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LTE stands for long-term evolution. It evolves from third generation technology based WCDMA Support higher peak data, through wider bandwidth. It Provides low latency and head( radio delay 5m.sec) Data rates f 100mps. It is the next level of UMTS 3G technology.

LTE was commercially implemented in October 2012 by Russian network Yota. It is basically 3 Gpp LTE initiative touch by the 3rd generation Partnership project 2004. This system was developed in mobile phones( smartphone) in 2010. LTE is also the technology endorsed by public safety for the nationwide public safety broadband network built by the first net.

It is technology that all public safety agencies across the globe tend to use in the future mission-critical public safety of the broadband network. They are making it even better by adopting LTE as its neget wireless technology standard. The public safety will be always kept in pace with current technology.

LTE is the correct version and standard developed by the organization called the third generation partnership project (3gpp). Approximately after every two years 3gpp releases a new version of their standard. LTE represents the current version of these standards it means that adopting LTE for firstnet and the nationwide public safety is already prepared for 4G and 5G in the future.
so while 5G technology might have a different name and won’t be called LTE it will essentially just be a new version of the same technology.

Fourth Generation(4G)

G stands for generation. 4G stands for the fourth generation of wireless mobile telecommunication technology, succeeding 3G. A 4G system must provide capabilities defined by ITU and IMT advanced. It is the 4th generation of mobile phone communication technology.

The basic difference b/w 3G and 4G is data transfer and signal wireless. It is the standard for cellular wireless.
The aim is to achieve ” ultra-broadband speed” in gigabyte per second.

One of the basic term used to describe 4G is MAGI
Mobile multimedia.
Any time anywhere.
Internet wireless solution.
Integrated wireless solution.
Customized personal services.
Also known as mobile broadband everywhere.

Components of LTE

LTE Network has four major component

Core network:

It is the brain of the networks it consists of servers and gateway that control access quality of service billing and n/w policies. The core provides access to the internet and multimedia service like telephone calls.

Radio access network

The easy way to think of this is that the radio access networks are the sites that you see the cell tower. These towers have transceiver equipment called a node and antennas and provide wireless coverage for your device.

Backhaul network

It is made of fibre and microwave connection. The backhaul network connects the radio access n/w to the core network.
The backhaul network represents the roadways where the data is received from you and your device then back to the core n/w. Then you can access the n/w, make telephone calls and access other network services.

User Equipment

Last but not least is the user equipment which consists of cell phones mobile router and other device used by an individual. Your cell phone would be considered user equipment. The user equipment connects directly to the radio access n/w. This subsystem is probably most familiar because your cell phone is a piece of user equipment.


  • Mass development to begin around 2012.
  • A device such as laptop, camera, mobile phones are converted into Lte.
  • LTE has many features, but there are four aspects to the LTE based nationwide public safety broadband n/w that are very beneficial for public safety.

These four features are

  1. Exclusive spectrum.
  2. High-speed data.
  3. Priority and preemption.
  4. Self-organizing network or (Son).


The nationwide public safety broadband n/w has access to exclusive frequencies that are not shared with the general public or another user outside of public safety.
This is main reason that services will be useful for public safety. The frequencies allocated to firstnet and the nationwide public safety broadband n/w are in the 700 megahertz range. These are the same frequencies that were previously used for broadcast television before the digital tv transition a few years ago.
Their beach front frequencies are very valuable and are extremely similar to the frequencies powering the lighting fast commercial cellular n/w.
Today networks including version AT & T. The frequencies for first Net and the nationwide public safety broadband n/w are completely separate from the major carrier n/w.

This means that during major disaster when commercial n/w get overloaded the first responder will have their frequencies for mission-critical communication.


The second primary benefit of LTE for public safety is its high speed. This true both for the commercial carrier who use LTE as well as for first net and nationwide public safety broadband n/w. LTE n/w are typically designed with three sectors at each site. Each sector will have the same amount of data.


LTE for public safety is the ability to configure priority and preemption of traffic. This allows the n/w to make sure that the most important traffic always gets through no matter how busy the n/w is. LTE allows us to configure priority and preemption for users of the system.


There are many features that go into the self-organization n/w. The one that we are going to talk about today for public safety is the ability of the n/w to repair itself during outages.

  • Provide low latency.
  • LTE can support higher data rate.
  • Increase LAN transfer speed.
  • More cost-effectiveness.
  • An improvement over 3G network.
  • To use 4G service, a 4G enabled mobile phones is required.
  • It cannot upgrade or update your existing prepaid sim and connection to 4G. To avail 4G service you need to apply for a new number.
  • We can not make calls and send SMS over 4G service or connection.


LTE is a global standard technology for cellular communication used by virtually every carrier worldwide. It has many special features that are designed to make the service very reliable for a public safety grade of service, including Exclusive spectrum, very high speed, Priority and preemption. And by adopting LTE for the nationwide public safety broadband n/w. Public safety is future-proofed for 4G,5G and beyond.

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