The text offers an introduction to the basics of lte architecture, services and technologies and includes details on the key principles and methods of lte optimization and its parameters. Costs are always a major concern for irst responders, but. As we know we can not live without modern wireless technologies. Lte is mainly designed for high speed data applications both in the uplink and downlink. To achieve this lte architecture and network nodes require additional functionality, this blog is an attempt to provide overview for same.
Status and migration trends lav gupta, lavgupta at. The tutorial on lte also covers lte protocol stack, lte physical layer, lte network architecture and so on. It based on the original 3g technologies having the ability to reach the speed up to 100 mbits with a muchreduced latency. Sumit thakur uncategorized lte ppt power point presentation pdf. Like any technology, ltebased technology has both pros and cons. Lte evolved from an earlier 3gpp system known as the universal mobile telecommunication system umts, which in turn evolved from the global system for mobile communications gsm. Lte provides downlink peak rates of at least 100mbits, 50 mbits in the. The flip side of this is lack of native circuitswitched cs domain voice, which has been the norm so far in the cellular networks.
Many vendors offer solutions for private lte networks. Dec 21, 20 lte epc technology basics sanjay nolkha. Lte location based services technology introduction. Lte technology supports packet based services only, however 3gpp does specifies fallback for circuit switched services as well. Lte is the natural upgrade path for carriers with both gsmumts networks and cdma2000 networks. It also provides reduced latency, scalable bandwidth capacity and backwardcompatibility with existing gsm and umts technology. Lte tdd which is also referred to as tdlte provides the long term evolution path for tdscdma based networks.
Chapter 4 describes the uplink transmission scheme for lte. This application note introduces lte fdd and tdd technology and related testing aspects. Global navigation satellite system gnss based solutions are highly accurate and the technology of choice for absolute position accuracy, providing the. When selecting a smartphone, the older models may not support the newer data network technology. This document presents the lte network architecture as the first technical document of lte area.
New, orthogonal frequency division multiple access ofdma based multiple access schemes for both lte fdd and tdlte. Longterm evolution timedivision duplex lte tdd, also referred to as tdd lte, is a 4g telecommunications technology and standard codeveloped by an international coalition of companies, including china mobile, datang telecom, huawei, zte, nokia solutions and networks, qualcomm, samsung, and stericsson. However, other nations and companies do play an active role in the lte project. Its basis stands in the gsmedge and umtshspa network technologies, with changes in terms of an increased capacity and higher speed by simplifying the core network and using a different radio interface. Next generation lte, lteadvanced or lte rel10 is the next step in radio access technology in tutorial, ericsson, lteadvanced, lte whatever the name next generation lte, lteadvanced or lte rel10 the next step in lte evolution allows operators to introduce new technologies without putting exis. In view of the fact that there are a number of differences between the operation of the uplink and downlink, these naturally differ in the performance they can offer.
Future developments could yield peak throughput on the order of 300 mbps historydevelopment. The presentation on lte long term evolution slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In order to make smooth transition from 3g to 4g the mobile communication companies are promoting super 3g lte. Frequency division multiplexing ofdm as its radio access technology, together with advanced antenna technologies. This technology allows the user to have access over mobile web, gaming. Umts long term evolution lte technology introduction. This application note gives an introduction to lte technology, including both fdd and tdd modes of operation. Lte tdd which is also referred to as td lte provides the long term evolution path for tdscdma based networks. Eps is divided into two parts lte part which deals with the technology related to a radio access network eutran and epc part which deals with the.
In order to handle higher network demands, the network must be smart, efficient and cost effective. The companies are upgrading 3g technology by initializing the introduction of high speed downlink packet access hsdpa service, which increases the. Lte location based services technology introduction white paper location based services lbs involves the process of determining where a device is located. Lte tutorial for beginners learn lte online training. Oct 18, 2017 lte optimization engineering handbook is a comprehensive reference that describes the most current technologies and optimization principles for lte networks. Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. Sae system architecture evolution is the corresponding evolution of the gprs3g packet core network evolution. Longterm evolution lte is the next step in the gsm evolutionary path beyond 3g technology, and it is strongly positioned to be the dominant global standard for 4g cellular networks. Lte was the 4g successor to the 3g umts system which was developed to provide a further evolution of the mobile telecommunications system available. Lte optimization engineering handbook wiley online books. Whats happening in mobile internet world device providers 16.
Utilising ims technology, it is a digital packet voice service that is delivered over ip via an lte access network. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. Because the lte mac is fully scheduled, qos is a natural fit. Lte long term evolution evolutionary step from gsm to umts 4th generation cellular technology standard from the 3rd generation partnership project 3gpp deployed worldwide and installations are rapidly increasing lte is completely packetswitched technology to provide increased data rates. Just as ethernet and the internet have different types of qos, for example, various levels of qos can be applied to lte traffic for different applications. Lte and the evolution to lteadvanced fundamentals part two duration. Even when the mobile device supports both access technologies, the data flow can not be seamlessly handed over between the 2 access technologies with no user awareness of the change. In effect, this means that lte more than any other technology already meets key 4g requirements. Gsm association nonconfidential official document v1. The basic difference between them is the speed of the network. The goals for lte include improving spectral efficiency, lowering costs, improving services, making use of new spectrum and reformed spectrum opportunities, and better integration with other open standards. Frequency division duplexing fdd and time division duplexing tdd both paired and unpaired spectrum.
Lte in bullets 2nd edition pdf the content is aimed towards anyone wishing to learn the basics, or to develop a more thorough understanding. Providing much higher data speeds and greatly improved performance as well as lower operating costs, the scheme started to be deployed in its basic form around 2008. This tutorial will give you enough understanding on lte technology from where you can take yourself at higher level of expertise. Public safety planners will face many challenges as they deploy this new technology in an everchanging environment. Lte stands for long term evolution and it was started as a project in 2004 by telecommunication body known as the third generation partnership project 3gpp. It should support mobility, better coverage, power efficiency, reliability and most importantly security. The term lte is typically used to represent both lte and sae. Summary introduction to wireless lte 4g architecture and key.
Together, ofdm and mimo are two key technologies featured in lte and constitute major differentiation over 3g systems which are based on code division. Status and migration trends lav gupta, lavgupta at wustl. The content is presented in the form of bullet points to keep it concise and to allow rapid access to the key information. Wifi provides the benchmark with widely available equipment and a large, sophisticated professional services market. Lte offers higher peak data transfer rates up to 100 mbps downstream and 30 mbps upstream.
Volte is in accordance with 3gpp specifications and additional profiling is defined within. Understanding the basics of mimo communication technology. Jan 16, 2011 the presentation on lte long term evolution slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Frequency division duplexing fdd and time division duplexing tdd both paired and unpaired. Lte architecture supports hard qos, with endtoend quality of service and guaranteed bit rate gbr for radio bearers. Lte offers 1030x improvement on costperformance vs.
Eps is divided into two parts lte part which deals with the technology related to a radio access network eutran and epc part which deals with the technology related to a core network. In this paper, it presents an overall description of lte technology separately in different aspects of lte architecture and technical principles to clarify how lte as a radio technology achieves a. In order to make smooth transition from 3g to 4g the mobile communication companies are promoting super 3glte. If you continue browsing the site, you agree to the use of cookies on this website. Lte includes an fdd frequency division duplex mode of operation and a tdd time division duplex mode of operation. The third generation network, known as 3g, is the oldest technology of the group. Voice calls over lte are recognised as the industryagreed progression of voice services across mobile networks, deploying lte radio access technology. Lte fully abbreviated as longterm evolution is a technology involving firstgeneration 4g cellular networking.
Raj jain download abstract rapid increase in data traffic over cellular network is necessitating deployment of long term evolution lte in the cellular. Chapter 3 describes the downlink transmission scheme for lte. Audience this tutorial has been designed for audiences with a need to understand the lte technology basics in very simple terms. This page of tutorials section covers 5g tutorial basics which mentions need for 5g wireless, 5g technology features, advantages of 5g and key 5g projects as we know we can not live without modern. Lte can be operated in either frequency division duplex fdd or time division duplex tdd mode, also referred to as lte fdd and tdlte. Lte optimization engineering handbook is a comprehensive reference that describes the most current technologies and optimization principles for lte networks. Lte standard has been published by 3gpp as an extension of umtsbased on 3gpp standard and 1xevdobase on 3gpp2 standard technologies. Lte and the evolution to lte advanced fundamentals part two duration. The origin of lte started from global system for mobile communication gsm which evolved to 3gpp system known as the universal mobile telecommunication system umts, which again give path to lte. The lte network called eps evolved packet system is an endtoend e2e all ip network. Enhancement of the utra optimisation of the utran architecture to ensure the continued competitiveness of the 3gpp technologies for the future lte was the first and only technology recognized by the next generation mobile network alliance to meet its broad requirements target deployment in 2010.
The goal of lte was to increase the capacity and speed of. People who are in need to understand the basics of lte technology are the perfect audience to this tutorial. At the same time, using new, wideband codecs can provide higher voice quality and enhance the user experience. To take advantage of lte technology, enterprises need equipment that is costeffective, fast to deploy and simple to operate and maintain. Lte technologies ofdm orthogonal frequency division. Volte service description and implementation guidelines. Lte stands for long term evolution and is a registered trademark owned by etsi european telecommunications standards institute for the wireless data communications technology and a development of the gsmumts standards. Our test solutions were the first on the market and since then evolved to a full product portfolio from a singlesource supplier. It is an exciting new technology in the world of mobile telecommunications.
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