What is LTE: How It Works and Why It Matters

We’ve all heard about 5G and 4G as the field of cellular network technology. You may have heard the phrase “4G LTE” and wondered what LTE mean? The quick response is LTE is “Long Term Evolution” and it is used most often to refer to 4G, the 4th-generation global wireless communication standard first introduced in the year 2008. In this article, we’ll answer the important question: What is LTE: How It Works and Why It Matters as you start to explore cellular networks and mobile data.

As 5G rolls across the globe there are many questions regarding network technology and the terms used. For instance Is 4G going to disappear? Are 4G LTE plans to go away? If yes, when?

This blog will look at the history of LTE. We’ll examine its role in cell phone communications, its connection to 5G, 5G, the next-generation of technology for cellular networks — and the length of time 5G and 4G will be able to coexist.

What is LTE Long-Term Evolution?

The idea of LTE can be the source of a myriad of concerns. What exactly is LTE? What exactly is LTE data? Is LTE similar to 4G? In short, even though LTE isn’t technically identical to 4G, its development is occurring in 4G-based networks. LTE data transfer is more quickly and has less latency, which we’ll discuss in this article and the following section.

Most consumers’ first exposure to “LTE” was probably when they saw the letters on the lower right corner on their mobile and inquired what LTE refer to on the phone? On mobile phones it is simply a way of saying your phone’s connection to provider’s four-G network.

The the Long-Term Evolution (LTE) was first announced in 2008, it was the name of a new cell access network that has high spectral efficiency, large rate of data at peak, shorter round trip times and flexibility in bandwidth and frequency. It signifies a growing level of performance, as the capabilities of the cellular hardware, software and network technologylike speed as well as battery utilization, latency and cost efficiency are enhanced and improved in time. According to one professional observer observed regarding LTE, “It isn’t as much a technology , but it’s the way to go in order to get speeds of 4G.”

It is vital to realize that, as new generations of cellular technology come out the previous generation(s) will continue to be in use, frequently coexisting for 10 years or more, or even longer, with the latest technology.

The article is a companion piece: From 4G to 5G What’s the Timeline? LTE Be There?

What LTE signifies for people who are purchasing and using LTE technology is that they will be able to use many different devices on an LTE network and be assured that their use will remain in place for many years to be. This is crucial as older networks like 3G and 2G are closing to allow this spectrum to be utilized more effectively. In comparing LTE and. 3G, users with devices that are based on pre-4G networks should upgrade to 4G or 5G with no delay. If you’re already using 4G then you’re protected for the future through the lifespan of your devices.

LTE technology has provided a myriad of advantages around the world:

• LTE connectivity is almost universally available around the world for both consumer and commercial/industrial applications.
• LTE ensures long-term continuity in network while older networks such as 3G and 2G are fading away.
• In areas where 5G may not be accessible for some time 4G 4G Advanced along with 4G LTE Advanced Pro technology will support the need to migrate from 2G/3G in many years to come.
• LTE can provide faster speeds and significant advantages for low-power applications and less expensive devices. It provides the same technology base that can be used in a myriad of scenarios.

What is the process behind LTE How Does LTE Work?

LTE enhances the functionality and performance of earlier networks. This short LTE explanation from Keven Sookecheff offers a great LTE overview that will help you understand the way LTE operates:

LTE is a revision of 3G standard in order to meet the requirement for data transmission with low latency. The new version includes:

• A core IP address-based network
• A simplified network architecture
• A new radio interface
• A brand new modulation technique
• Multiple inputs radios, multiple output (MIMO) on all devices.

Here are some key information about the way LTE is working at a higher level:

• LTE has lower latency as well as greater throughput across the network, significantly improving 3G network performance.
• LTE runs on a different spectrum from 3G networks , and requires new equipment.
• LTE delivers data download speeds that exceed hundredths of megabits (Mbps) as compared to a few 10th Mbps for 3G. This means that LTE is five to ten times quicker than 3G.
• LTE supports data as well as voice (VoLTE) and instant messaging , and video on tablets and smartphones over the same interface. When it was 3G the process was carried out across different platforms and, on certain networks, voice and data were mutually exclusive.

When 4G changed over it’s 3G predecessors, the network architecture was based on small, minor modifications. The following diagram of the blog of our blog on 5G’s Network Architecture blog, illustrates how LTE operates from an architectural viewpoint:

In 4G LTE the Users Equipment (UE) as smartphones and cellular devices connects via the LTE Radio Access Network (E-UTRAN) to the Evolved Packet Core (EPC) and, in turn, to External Networks such as the Internet. This is because the Evolved NodeB (eNodeB) is able to separate the data traffic of users (user plane) from the management plane of the network’s data plane (control plane) and feeds both in the EPC.

LTE Technology: The Evolution of LTE Technology

Every decade, every decade, the Radiocommunication Sector of the International Telecommunications Union (ITU-R) and its associates define the new specifications for connectivity, speed and spectrum for all mobile communications systems. The older versions of technology are being retired or re-classified periodically so the data is transmitted across the same spectrum, and more devices are able to share the spectrum.

It is important to note that the ITU-R standards reflect advancements in technology, and the timelines for their implementation are set to accommodate the needs of new applications and industries. Another group,”the 3rd Generation Partnership Project ( 3GPP) uses ITU-R’s requirements and creates technical specifications which are packaged into a set of releases.

The timeline of updates by 3GPP illustrates important milestones in the development of LTE technology. Source: Qualcomm

Here is a quick overview of the most important LTE development milestones as well as the related LTE technology:

• 3G was launched in 1998, and can be the technology baseline for LTE since LTE specifically is a reference to the capacities that go beyond 3G. The 3G technology was first to offer data speeds that were in the Mbps range.
• Standards for 4G speeds and connections were established in ITU-R in March 2008. ITU-R on March 28, 2008. The 4G standard that was set for mobile devices tablets and smartphones required that every product or service that is marketed as 4G had to be connected speeds that reached 100 Mbps or more, and at minimum 1. Gigabit every second (Gbps) for stationary usage. When the standards were first established the speed was not yet feasible. To address this to this, the ITU-R authorised products and technologies to be identified as “4G LTE” when they were able to provide significant improvements over 3G technology.
• LTE Advanced (LTE-A) can be described as an upgraded version of LTE which offers higher speeds and more stability than regular LTE However, it’s not as efficient than “true” 4G. LTE Advanced was standardized in the year 2011. LTE-A speeds up downloads by the aggregation of channels, which means that users are able to download data from multiple sources simultaneously.
• LTE Advanced Pro (LTE-AP) specifications were announced in the years 2016 and 2017. LTE Advanced Pro includes three significant technological innovations: 1.) carrier aggregation that utilizes spectrum from multiple LTE carrier bands 2,) Higher-order modulationthat makes use of available spectrum more efficiently by carrying more data bits and three) Multiple input multiple output (MIMO) antennas that transfer and receive information at greater speeds. MIMO technology increases network coverage and speed especially in urban regions. The Gigabit class LTE is a variant that is a variant of LTE Advanced Pro is theoretically capable of downloading speeds that exceed 1 Gbps however, the majority of users won’t be able to experience speeds as quick. LTE with Gigabit class is a popular option for transportation, retail and other sectors that require high-speed, high-bandwidth technology.
• 5G is the most recent standard that was released in 2020 and 2019. 5G is in the process of in use across the world. When fully integrated 5G networks will be able to offer speeds upwards of 10 Gbps and reduced latency, less power requirements, and almost unlimited capacity for data.

What is Private LTE?

It’s crucial to include “Private LTE” or “Private Mobile Networks” that provide an option to deploy LTE technology. Although LTE is typically utilized in public networks, private LTE networks are smaller wireless networks operating on similar protocols as well as technologies as public LTE that use licensed spectrum that is unlicensed, shared or licensed to offer coverage to cellphones as well as other devices. Operators of mobile networks (MNOs) are able to license spectrum and then launch an individual Private LTE network within the spectrum.

Private LTE networks offer a low-cost option for sites that are geographically distinct like remote mining or oil fields sites, or for confined zones like in huge ports or factories. Private LTE can also be found in sports stadiums, airports as well as on corporate or college campuses. All of these use cases benefit from the almost continuous availability that can be achieved with Private LTE.

Citizens Broadband Radio Service (CBRS) is a variation of private LTE that is available in the U.S. that uses shared spectrum within the 3.5 band (B48). CBRS is a solution to similar needs to Wi-Fi, is growing popular among Enterprise and Industrial customers that need greater freedom over their networks. CBRS is a cost-effective network solution for remote sites and areas in rural areas with weak or no public cellular coverage.

What is the difference between 3G and LTE?

3G networks started rolling out commercially around 2002. slowly expanding and eventually replacing the two-way network protocols. LTE capabilities are built on top of some of the fundamental 3G technology and acts as an improvement to 3G.

Here are a few of the important distinctions among 3G and LTE:

• Speed 3G is slower the data rate is measured as Kilobits each second (Kbps) instead of megabits/second.
• Latency 3G latency (the delay between when data is sent until the moment it’s received) is significantly higher.
• Use of power: LTE devices transfer a larger amount of data, and thus use batteries more quickly than 3G. This comes with costs and power management implications that network operators and developers should consider.
• Reliability and availability The reliability and availability of 3G networks was not as high until recent times. were available more widely. Nowadays 4G networks are all-inclusive and reliability issues have mostly disappeared.

Find out more about these articles:

• How to stay ahead of 3G Network Sunset
• 3G/4G LTE Cellular Industrial Solutions

What is the difference between LTE and 4G? LTE?

The words “4G” as well as “LTE” are frequently utilized interchangeably and “4G LTE” is seen often in literature from the industry. While marketing for carriers often suggests it is 4G LTE is an upgraded variant from 4G, 4G LTE actually is a reference to networks and devices that are moving from the slow 3G standard to fully 4G capacity and speed. 4G LTE covers the complete spectrum of download speeds, starting at 3G’s 10th of Mbps up to 4G’s 100th Mbps.

“4G” is a reference to the advancement of technology “LTE” refers to the process to evolve the technology over the course of several releases by 3GPP which clearly outline the steps to achieve higher performance and greater capabilities. This gradual process makes devices in sync and allows technology to make an easy change from one generation into the following.

What is the reason LTE Networks Matter for IoT

LTE networks are extensively used in Internet of Things (IoT) applications that connect machines and equipment, enabling them to transfer and receive information. Although the IoT existed prior to the advent of LTE-level connectivity, the greater speed and speed of LTE allowed IoT systems to manage complex and larger systems with greater accuracy.

IoT solutions are utilized in a variety of industries. Here are a few of the most popular instances of the LTE enabled IoT:

• Transit buses, commuter rails and various other types of public transportation depend upon LTE connectivity and data to inform dispatchers and system managers on vehicles’ performance, ridership levels and also for Wi-Fi connectivity for passengers.
• Smart Cities: Several IoT applications that utilize LTE provide cost-effective functions for municipalities, which includes Intelligent lighting controls for public areas electronic vehicle charging station along with high-speed LTE networks that connect traffic signals in real-time for flexible transportation management.
• Industries: IoT plays a major part in industrial and factory operations, such as the monitoring of processes and controls, manufacturing automation and predictive maintenance.
• Precision agriculture: irrigation systems as well as others equipment for agriculture supported by LTE can bring significant cost savings and labor for farmers.
• Wastewater management and water: IoT apps that come with LTE connectivity offer continuous wireless monitoring of lift stations, wells sewers, and other parts of wastewater and water systems..
• Digital and retail signage Solutions for IoT-enabled Retail and digital signage. Applications as well as digital signs can be used in a range of applications, from informational signage to outdoor advertising to point of sale systems ATMs self-service checkout systems, and much more.

Find out more information about IoT along with LTE in these articles:

• What do IoT devices Do?
• 12 fun facts About IoT

Why is LTE essential for 5G?

Continuous LTE connectivity is crucial to the smooth introduction for 5G network. LTE along with 5G network will work together for at least 10 years until the entire 5G infrastructure has been constructed and LTE is essential for providing back-up connectivity to areas with inadequate coverage for 5G. In the beginning, LTE will also be substantially less expensive than 5G in most applications.

From an infrastructure point of view from an infrastructure perspective, most 5G networks will initially be released using “5G standalone” (5G non-standalone) mode. The first 5G devices will have an internal radio which supports simultaneously 4G LTE and 5G. The device connects with the 4G LTE network first, then utilizes a 5G network for additional bandwidth, in the event that it is available. The roles eventually will shift as the 5G networks mature and devices will be able to connect with the network when in “5G standalone” (5G SA) mode which allows them to fully benefit from 5G technology.

Here are some questions and answers on the key ways LTE will be able to support 5G:

• What happens when 5G will phase off 4G LTE? 5G will require new hardware for both network operators as well as their customers. Network operators will have to install new equipment in all their transmission towers and this will be an extensive, labor-intensive procedure. But the good news is that network operators began the process of deploying a new 5G infrastructure several years ago, back when 5G was in its initial definition. With a quick software update the infrastructure now has the capacity to handle both 4G and 5G in tandem.
• What’s LTE service? LTE service offers LTE access for four-way LTE end devices including routers devices, gateways, phones and tablets.
• Do you think that LTE and 5G separate bands? Not necessarily. 5G is able to share the same spectrum as 4G LTE through a process known as Dynamic Spectrum Sharing (DSS). DSS allows us to utilize 5G earlier and prolongs the duration for 4G LTE network, and therefore the lifespan of devices running 4G LTE. However, 5G is making use of “fresh” spectrum like 5G mmWave, which is only available to 5G.

Furthermore, LTE provides essential physical infrastructure for 5G. One industry professional said it that “Early five-G systems … will require an 4G LTE control plane (a network element responsible to route traffic in order to manage data sessions in 5G.”