This book focuses on lte with full updates including lte advanced to provide a complete picture of the lte system. This is followed by an analysis of the threats posed 46 to lte networks and supporting mitigations. In addition to lte, 3gpp is also defining ipbased, flat network architecture. Umts is a complete system architecture as in gsm emphasis on standardized interfaces mix and match equipment from various vendors simple evolution from gprs allows one to reuseupgrade some of the gprs backhaul equipment backward compatible handsets and signaling to support intermode and intersystem handoffs. The first deployments were simply known as lte, but later deployments were designated 4g lte advanced and later still 4g lte pro. A usim stores userspecific data very similar to 3g sim card.
An overview of lte positioning 7 spirent white paper positioning architecture in lte networks positioning information exchange between the ue and the lte network is enabled by the lte positioning protocol. Mar 26, 2012 thus, in order to achieve the goals, the architecture of the network if different from the previous wireless data transfer network, gprs. Sae system architecture evolution is the corresponding evolution of the gprs3g packet core network evolution. First, the lte network reference model is defined and its basic evolved packet system eps entities and the functions of each entity are described.
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. Lte architecture and interfaces overview telecom hub. This new architecture optimizes network performance, improve cost efficiency and facilitate the uptake of mass market ip based services. We will also cover 5g deployment scenarios from the specs as well as some of the informative web resources. The paper also briefly touches the bearer establishment procedure. Barth all rightsreserved2006, alcatel 15 network architecture for lte architecture for user plane traffic cost efficient 2 node architecture fully meshed approach with tunneling mechanism over ip transport network iu flex approach access gateway agw enhanced node b enb agw agw agw. This video tutorial talks about lte architecture in detail to give holistic view of lte architecture. Volte service description and implementation guidelines. The highlevel network architecture of lte is comprised of following three main components. The evolved packet core communicates with packet data networks in the outside world such as the internet.
In this second part of 15 mins with 5g we will start looking at the 3gpp specifications for 5g network architecture and learn how to refer the specs. 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. The lte network architecture rmd engineering college. This paper provides an overview of the mac for 3gpp long term evolution lte also. Lte lteadvanced 4g carrieraggregation comp relay mimo a b s t r a c t thispaperprovidesanindepthviewonthetechnologiesbeingconsideredforlong termevolutionadvancedlteadvanced. Lte was the 4g successor to the 3g umts system which was developed to provide a further evolution of the mobile telecommunications system available. The evolved umts terrestrial radio access network eutran. Fourth generation systems and long term evolution 148.
This paper provides a comprehensive tutorial of the overall eps network architecture, giving an overview of the functions provided by the core network cn and e. Mobile terminal or user equipment ue acquires time and frequency synchronization with a cell and detects the cell id of that cell. Lte a has frequency reuse factor of 1 since spectrum is expensive, uses highorder mimo. Overview of lte radio interface and radio network architecture for high speed, high capacity and low latency. The longterm evolution lte as defined by the 3rd generation partnership project 3gpp is a highly flexible radio interface 1, 2. The architecture of lte network and working principle lte is a standard for wireless data communications technology and an evolution of the gsmumts standard. Lte a meets and exceeds all requirements for 4g as specified in imtadvanced. Lte a can aggregate up to 5 carriers to make up to 100 mhz 4.
The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission. The first release of lte provides peak rates of 300 mbs, a radionetwork delay of less than 5 ms, a significant increase in spectrum efficiency com. Lte procedures on s1 and x2 interfaces are described in detail. The paper introduces control plane and user plane architecture. It also provides a look at the evolution to a dataonly lte network and includes a discussion of. This document serves as a guide to the fundamentals of how lte networks operate 45 and explores the lte security architecture. 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. Summary introduction to wireless lte 4g architecture and key. Myung 2 beyond 3g international mobile telecommunications imt2000 introduced global standard for 3g. The objective of this paper is to study, analyze, plan long term evaluation network overview such as lte specification, planning, lte architecture, related works, private work and conclusion. Increased bandwidth endtoend ip simplified architecture. Sep 03, 2018 this covers the 5g core network as it is today after june 2018s publication of rel 15 stage 3. Lpp is similar to protocols such as rrc, rrlp, and is801 already deployed in 2g and 3g networks2 time difference of arrival. Lte phy overview gwanmo ku adaptive signal processing and information theory research group nov.
The term lte is typically used to represent both lte and sae. We present an overview of the eutran radio interface characteristics and 4g network architecture elements. According to different service requirements, fiberoptic cable availability and network resource allocations, ran real time and nonreal time resources can be deployed on the site or on the access cloud side. Overview and detailed explanations are given for the latest lte standards for radio interface architecture, the physical layer, access procedures, broadcast, relaying, spectrum and rf. Long term evolution lte is the next generation 3gpp radio access network evolved umts terrestrial radio access network eutran system architecture evolution sae is the 3gpp next generation standard for mobile networks providing. Lte have a significant effect on the operation of mobile devices. 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. So, in post, a comprehensive overview of the network architecture and basic working principle of lte network is going to be discussed. This paper provides an overview of ims, its architecture and applications from the perspective of the lte user equipment ue. Not only was the radio access network improved for 4g lte, but the network architecture was overhauled enabling lower latency and much better interconnectivity between elements of the radio access network, ran. Lte provides a packet switched model at the sap, but retains a circuit switched model at the phy. Systems beyond imt2000 imtadvanced is set to introduce evolutionary path beyond 3g. 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.
Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. The lte network called eps evolved packet system is an endtoend e2e all ip network. Lte architecture overview free download as powerpoint presentation. Long term evolution protocol overview nxp semiconductors. There are few more components which have not been shown in the diagram to keep it. If you continue browsing the site, you agree to the use of cookies on this website. Jul 10, 20 this document provides a brief overview of the lte network architecture as the first technical document of lte area. 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. This document presents the lte network architecture as the first technical document of lte area.
Ieee is standardizing mobile wimax threat for loosing competitive edge. This document presents the lte network architecture as the first technical document. Jul 31, 2017 mobile networks overview 2g 3g 4glte 1. The architecture of evolved packet core epc has been illustrated below.
The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. Nchu cse lte 2 system architecture evolution sae packet core networks are also evolving to the flat system architecture evolution sae architecture. This architecture is defined as part of the system architecture evolution sae effort. Based on bch broadcast channel signal and hierarchical sch synchronization channel signals. Main functionalities of each network node are discussed in detail along with examples.