The network elements and interfaces used solely to support broadcast services are covered. The hss is the database that stores the subscription information of the users in the network, like which pdn they should be able to access, and the qos they should have, etc. Sdn will also open up new opportunities for traffic, resource and mobility management, as well as impose new challenges on network security. The evolved umts terrestrial radio access network e. This is the next step in the continuous move to wider bandwidth and higher data rates. Core network nodes include the mobility management entity mme, serv. Lte defines also a simpler and flatter network architecture than 3g, thus there is an impact offering mbms over lte.
Evolution sae, the core network architecture for lte. In order to achieve this, the lte network architecture introduces a number of new network nodes and interfaces to implement the necessary functionality and manage the exchange of packets between mobile devices and external packet. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. Draft nistir 8071, lte architecture overview and security analysis. The flatter lte architecture also exposes backhaul traffic to more entry points, because each enb can connect through multiple links to other enbs and network elements. The network elements and interfaces used solely to support broadcast. The lte network architecture strategic white paper 1 1. A nextgeneration core network architecture for mobile. Pdf mobile technology has emerged the needs for wireless communication over various generations of wireless technologies with upcoming. In section 4, we present lte a network planning overview. System architecture evolution sae is the 3gpp next generation. 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. Frequency division duplexing fdd and time division duplexing tdd both paired and unpaired.
The architecture of lte is flat compared to previous cellular technologies. The following architecture diagram shows epc, ims and the interface between them. Eutran architecture in order to meet the requirements for lte networks, the evolved utran e utran architecture has been improved dramatically from the 3g3. Lte network knowing basic equipment used in the network and their applications knowing the basic regulations in the test of the lte equipment. Pdn refers to public data network, and it is the network that the ue would like to connect to. Design, deployment and performance of 4g lte networks addresses the key practical aspects and best practice of 4g networks design, performance, and deployment. A baseline architecture for private lte is shown in figure 2.
Lets take a closer look at what private lte network architecture could look like in a few industry verticals. Chapter 2 network architecture and protocols the third. Lte network architecture and protocols wiley telecom books. Lte tutorial tutorial on lte basics rf wireless world. The lte network architecture is based on 3gpps defined system architecture evolution sae. Get 4g lte fundamentals training course with certification lte fundamentalstrainingcoursecertificationthis video explains lt. Similar architecture as the macro cell base station optical fiber and cat5e lan cable advantage no rf cable, no loss. Network architecture and protocols chapter 2 lte for 4g mobile. In lte networks, mandated encryption from the ue stops at the enb, leaving the ip traffic in the backhaul unprotected. Figure 1 shows how each component in the lte advanced network is connected to one another 79.
The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission. Geran and utran networks are shown for completeness. System architecture of lte the increasing transmission bandwidth of current 3g networks is limited. Ue may be a smartphone, tablet or other communication devices.
An overview of a gsm network architecture is presented in figure 3. Jul 23, 2017 lte architecture overview eutran epc pdn u e lte radio network uu s1 sgi 9. The lte network architecture is designed with the goal of supporting packet switched traffic with seamless mobility, quality of service qos and minimal latency. With the deployment of new technologies still on the way, the era beyond 3g and 4g requires that cellular and radio technologies need to work together forming highly heterogeneous networks, therefore this paper analyses already existing cellular. Functional split between the eutran and the epc following diagram shows the functional split between the eutran and the epc for an lte network. Moreover, it describes the lte network architecture. The highlevel network architecture of lte is comprised of following three main components. Lte standard has been published by 3gpp as an extension of umtsbased on 3gpp standard and 1xevdobase on 3gpp2 standard technologies. If the mobile terminal is located inside buildings the environment is called indoor, otherwise it is outdoor.
With the deployment of new technologies still on the. User equipment ue ue is a mobile terminal authorized to be used in an lte network. The lte network architecture computer science and engineering. Lte 4g network architecture lte core network mobile. Qualcomm technologies, nokia, and alphabets access group shows how venues and enterprises can deploy. Volte service description and implementation guidelines. The lte sae architecture and concepts have been designed for efficient support of massmarket usage of any ipbased service.
Protocol signaling procedures in lte radisys white paper 2 network architecture in figure 1, the architecture of the lte network is given with the various interfaces between the network elements. Myung 14 lte network architecture nonroaming architecture 3gpp ts 23. Design, deployment and performance of 4g lte networks. Qualcomm the core network inabox is typically virtualized and is deployed on. Sites support multiple modes such as 5g, lte, and wifi in the form of macro, micro, and pico base stations to implement the ran real time function.
Called the evolved umts terrestrial radio access network e. There were two study projects in this research field. Contents name lte network planning purpose to introduce the lte basic principle, network planning method and rnp solution key message lte has the flat network architecture and physical layer applies ofdm technology, as well as the mimo, icic, etc. A tutorial on lte eutran and lte self organizing networks. The following extract from 1 provides a very good understanding of the overall lte network infrastructure and elements. Also this paper tries to present the advantages why operators are willing to invest to. As we have preliminarily shown in 1, by leveraging the. Network architecture lte the umts long term evolution. It addresses the performance attrib utes of the lte radio and system architecture and how the global. Summary introduction to wireless lte 4g architecture and. It brings in promising technologies such as semipersistent scheduling, transmission time interval tti bundling, and high. Architecture for localarea private lte networks source.
One is the lte project, which studied the design of a new radio network and air interface. The system architectures between lte and wimax network will be shown. The huge role of the internet in todays world of information exchange is undeniable. Based on nfv and sdn, physical infrastructure of the future network architecture consists of sites and threelayer dcs. Lte network architecture in lte tutorial 02 april 2021. Increased bandwidth endtoend ip simplified architecture. It runs an application known as the universal subscriber identity module usim. The highlevel network architecture of lte is comprised of below three main components. Mobile terminal location, can be outdoor or indoor. The goal of lte was to increase the capacity and speed of wireless data networks. 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. Discover 5g core network functions compared to 4g lte award.
Network slice is a concept within 3gpp ct and its history can be traced back to rr14 with the introduction of static slicing in lte networks. The remainder of it presents the network interfaces in detail, with particular focus on the e. There is much flexibility in network size, the number of connected devices and coverage area. World scientific news 54 2016 2739 29 the gsm architecture is made up of majorly three subsystems which include the mobile station, network and switching subsystem nns, and the. Jun 19, 2015 this book describes the concept of a software defined mobile network sdmn, which will impact the network architecture of current lte 3gpp networks. This is also known as the sim card for lte equipments. And in addition, the architecture of 5g networks offers better security compared to todays 4g lte networks. A tutorial on lte eutran and lte self organizing networks son. Radio access network core network gsmgprsbased utran ue iu cs uu iur pstn bs rnc msc vlr gmsc hlr iub 3gpp rel.
The network architecture of 5g mobile technology improves vastly upon past architectures. Evolutionary analysis of gsm, umts and lte mobile network. In addition, the book focuses on the endtoend aspects of the lte network architecture and different deployment scenarios of commercial lte networks. Lte provides a packet switched model at the sap, but retains a circuit switched model at the phy. All you need to do is just click on the download link and get it. It consists of the core network and the access network. Qualcomm the core network inabox is typically virtualized and is deployed on premises to ensure that traffic stays local to the site. While legacy networks employed a hierarchical architecture, eutran uses a flat architecture. Large celldense networks enable massive leaps in performance. Sdmn, which will impact the network architecture of current lte 3gpp networks. However, other nations and companies do play an active role in the lte project. Conclusion here we are giving you lte seminar and ppt with pdf. Lte network infrastructure and elements lteencyclopedia. Lte mobile optimization a definitive guide white paper.
Summary introduction to wireless lte 4g architecture and key. Lte is mainly designed for high speed data applications both in the uplink and downlink. The architectural differences between lte and wimax diva. The eutran the access network the architecture of evolved umts terrestrial radio access network eutran has been illustrated below.
This document presents the lte network architecture as the first technical document of lte area. The evolved packet core communicates with packet data networks in the outside world such as the. Network architecture the core network of the lte advanced system is separated into many parts. Pdf survey on lte network architecture and its security aspects. Lte network architecture in lte tutorial 07 april 2021. The eutran handles the radio communications between the mobile and the evolved packet core and just has one component, the evolved base stations, called enodeb or enb. Figure 1 network architecture of lte advanced figure 2 illustrate types of cell according to the surrounding environments. Vmbased lte cellular network architecture with multiple virtualized mmes and hsss. In order to meet the requirements for lte networks, the evolved utran e utran architecture has been improved dramatically from the 3g3. Long term evolution lte is the next generation 3gpp radio access network. This chapter is an introductionchapter that describes the overall architecture and. It is being said that the real business case of network slicing will come with the arrival of 5g, although in rel15 stage3 release in dec, 2017 still t.
Chapter 2 network architecture and protocols the third generation partnership project 3gpp longterm. The eutran in lte architecture consists of a single node, i. Lte network planning includes coverage, capacity planning. Private lte based networks already demonstrated demo. In summary, 5g technology offers three principle advantages. This architecture is defined as part of the system architecture evolution sae effort. Long term evolution lte is explicitly designed to deliver highspeed, high quality services to mobile subscribers. Download fulltext pdf download fulltext pdf read fulltext. Pdf lte network architecture evolution abhishek nimbalkar. Lte system architecture rapid development of various communication technologies, both fixed and mobile, has caused, first of all, an increased interest in accessing the internet. Then we focus on the self organizing networks son concept being implemented in lte and handover optimization techniques. The architecture of evolved umts terrestrial radio access network eutran has been illustrated below. In addition to lte, 3gpp is also defining ipbased, flat network architecture. This paper discusses the diameter base protocol in a holistic view and presents the reasons why diameter is the preferred protocol for aaa services in these next generation networks.
Design, deployment and performance of 4glte networks. Lte network knowing basic equipment used in the network. The architectural differences between lte and wimax. In this research activity, i have made an attempt to completely explore the network architecture in long term evolution, main point of focus being the evolved utran and the enodeb enb in lte. 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. Similar architecture as the macro cell base station optical fiber and cat5e lan. The functions of the enb in eutran systems include not only base station nodeb functions to. Lte network architecture evolution ville eerola helsinki university of technology ville.
It includes radio access, devices and core network. In 2005, 3gpp launched a wireless system, which is based only on packetswitched networks. Named as lte long term evolution, the 4g system architecture is made up of an epc evolved packet core and evolved universal terrestrial radio access network eutran. The evolved umts terrestrial radio access network eutran. Executive summary this paper provides a comprehensive overview of the network architecture of a long term evolution lte system according to the release 8 version of the specifications. Utran interfaces and associated procedures, including those for the support of user mobility. The tutorial on lte also covers lte protocol stack, lte physical layer, lte network architecture and so on. Jul 09, 2020 private lte architecture variations across verticals.
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