Pdn refers to public data network, and it is the network that the ue would like to connect to. The bss consist of base station controllers bsc and the base transceiver stations bts. Although 3g was the first technology to give real mobile access to the web, it wasnt until lte long term evolution or sometimes called 4g, that our lives became completely mobile. The architecture of lte network and working principle lte is a standard for wireless data communications technology and an evolution of the gsmumts standard.
Cband is a globally harmonized 5g spectrum and is set to be the. In this paper we propose a new design solution for network architecture of future 5g mobile networks. These standards define an allip network as a base for the lte sae. Because this type of network architecture is agile enough to be moved without running more cabling, its possible to change direction without delay. Most of the umts networks worldwide have been already upgraded to high speed.
Increased bandwidth endtoend ip simplified architecture. Introduces the key elements of the lte and epc architecture. Architecture for localarea private lte networks source. System architecture evolution national chengchi university. On downlink, the mac in the ue interprets the transport format. Outline 1 introduction 2 lte architecture 3 lte radio interface 4 multimedia broadcastmulticast service 5 lte deployment considerations 6 work related to video streaming 7 conclusions ahmed hamza long term evolution lte a tutorial october, 2009 2 48. Architecture and interfaces elearning exploring lte. But underneath the antennas, the core network engineer is the one that ensures full connectivity in the entire mobile network although 3g was the first technology to give real mobile access to the web, it wasnt until. The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission. However, the ongoing contribution of licensed mobile operators to private wireless networks should not be overlooked. Long term evolution lte is designed to deliver very fast data speeds faster than most home wired broadband services. The mobile equipment comprised of the following important modules. With softwaredefined networking sdn and network functions virtualization nfv supporting the underlying physical infrastructure, 5g comprehensively cloudifies access, transport, and core networks. Mobile broadband is the 4g effort of north america and parts of asia.
Research on lte technology in this part 2 of the lte research that is being conducted to achieve a smooth transition from 3g to 4g, we present technology that is currently being studied for standardization as technical details. 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. Evolution sae, the core network architecture for lte. The lte network architecture explained in this document applies to a lte only network provided by a single operator and thus has covered the most basic components of the eps system.
Core network epc for lte ntt docomo technical journal vol. The evolved packet core communicates with packet data networks in the outside world such as the internet. Qualcomm the corenetworkinabox is typically virtualized and is deployed on premises to ensure that traffic stays local to the site. Lte mobile communicates with just one base station and one cell at a time and there are following two main functions supported by enb. A special channel through which the mobile can contact the network without any prior scheduling.
Much of the lte standard addresses the upgrading of 3g umts to what will eventually be 4g mobile communications technology. 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 page describes lte network architecture with system elements. The 4g mobile system based on open wireless platform architecture will become the next wave in wireless communications. A baseline architecture for private lte is shown in figure 2. At the same time, these technologies and the existing. From 3g to lte examines network architecture evolution in response to rapidly growing 3g data traffic and the planned introduction of long term evolution lte and system architecture evolution sae technology now also known as enhanced umts terrestrial radio access network eutran and evolved packet core epc, respectively in the 2010 to. Jul 10, 20 the lte network architecture explained in this document applies to a lte only network provided by a single operator and thus has covered the most basic components of the eps system. This paper will concentrate also to describe the main functions of the most important network elements.
Umts network architecture and elements mobile station highlevel functions umts domains and strata umtsgprs protocol architecture references. The lte architecture consists of lte eutran and lte evolved packet coreepc. The internal architecture of the user equipment for lte is identical to the one used by umts and gsm which is actually a mobile equipment me. Kth information and communication technology 2g30 mobile and wireless network architectures maguire total pages. This book explains the evolutions of architecture for mobiles and summarizes the different technologies. As lte matures and rel15 standard freezes, mobile operators should start carefully considering available network upgrade paths. Lte has the advantage of being backwards compatible with existing gsm and 3g technologies, enabling mobile operators to deploy lte and. As they have evolved, cellular and wifi have sensibly borrowed ideas from each other, resulting in systems that share characteristics in the physical layer, mac, and, more recently, overall network architecture. Points covered include a detailed description of various components of the radio interface. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. The proposed design is based on usercentric mobile environment with many wireless and mobile. Architecture evolution total cost of ownership business and technology expertise leveraged today will set a foundation for success. Lte standard has been published by 3gpp as an extension of umts based on 3gpp standard and 1xevdobase on 3gpp2 standard technologies. 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.
Comparison 1g 2g 3g 4g 5g period 1980 1990 1990 2000 2000 2010 2010 2020 2020 2030 bandwidth 150900mhz 900mhz 100mhz 100mhz x bw pr. Lte refers to long term evolution, and the architecture of the lte network is as following, the enodeb is the 4g site that the ue connects to. The highlevel network architecture of lte is comprised of following three main components. But underneath the antennas, the core network engineer is the one that ensures full connectivity in the entire mobile network. Lte provides a packet switched model at the sap, but retains a circuit switched model at the phy. Long term evolution lte is explicitly designed to deliver highspeed, high quality services to mobile subscribers. This document presents the lte network architecture as the first technical document of lte area. The servicedriven 5g network architecture aims to flexibly and efficiently meet diversified mobile service requirements.
This architecture is defined as part of the system architecture evolution sae effort. The technology leads to integrate the computing network for human needs. Maguire personal communication systems pcs introduction 18 of 92. Signaling and operations elearning required equipment none long term evolution lte network is optimized for delivering highspeed packetoriented content and services to a large number of mobile users. Long term evolution lte is the next step forward in cellular 3g services. Since lte supports handover and roaming to existing mobile networks, all these devices can have ubiquitous mobile broadband coverage from day one. Lte mobile broadband networks might look like an obvious job for a wireless network engineer. Indeed, the mobile network architecture needs particular attention when discussing the evolution of 3gpp eps because it is the architecture that integrates the many different future technologies into one mobile network.
Lte mobile network virtualization article in mobile networks and applications 164. Mobile 4g lte lte, lte advanced mobile 1g amps, nmt, tacs richer content. Lte system according to the release 8 version of the specifications. Yi bing lin wireless and mobile network architectures wiley publications pdf. Drive testing lte 4 one of the most interesting lte network features to rf optimization engineers is the impact that multiple input multiple output mimo with spatial multiplexing and antenna diversity brings to the enduser performance. The first deployments were simply known as lte, but later deployments were designated 4g lte advanced and later still 4g lte pro. Evolutionary analysis of gsm, umts and lte mobile network. The lte sae does not have separate packet switched data traffic and circuit switched voice network. Drivetestenabled devices can log the current rank, number of transmit and receive paths. Lte mobile communicates with just single base station and also one cell at a time and there are below mentioned two main functions which are assisted by enb. Target networks in 5g era embracing mobile network 2020s 04 evolution of all spectrum. Unlimited performance with the latest intel core 2 duo processor exe 20061027 25214 couple of androids and iphone 5. The mobile experience is expanding everywhere 1 source. 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.
Most of my carrier about wireless area was about the wireless communication between ue mobile phone and enbbts, i tend to assume that all other readers has the same interestfocus as mine. In addition to lte, 3gpp is also defining ipbased, flat network architecture. It is designed to enable the reader to become conversant rapidly with the main principles of the lte network architecture. Lte network architecture in lte lte network architecture in lte courses with reference manuals and examples pdf. To be able to move on to other lte technical documents that follow, fundamental understanding of the entities and interfaces of the eps system is required. Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. 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. What about the surface pro i do not need to get the 2 right gps golf pro features various. The main goals of lte is to increase the capacity and data rates of wireless data networks, improve spectrum efficiency, improve coverage, reduced latency and packetoptimized system that. Mobile network coordinated network for seamless access and seamless mobility 1 2 3 pstn landline 8. This book presents the technical characteristics of the two radio network interfaces of mobile 4g, lte and lte advanced, based on release 8, 9 and 10 of the 3gpp specifications. Teletok new lte 4g mobile network blue arcus ba is primed to revolutionize tokelaus telecommunication industry. Long term evolution lte a tutorial network systems. Lte 4g network architecture lte core network mobile.
The lte network called eps evolved packet system is an endtoend e2e all ip network. Key words long term evolution, lte, umts, hspa, flat architecture 1. Teletok chose blue arcus, tokelaus sole telecommunications provider, to rollout its cost effective fourth generation ltevolte solution across all three atolls of the islands nation. Tmobile lte service i n ter corenet voice core call server voice core mgw hrcxxx01 hrcxxx02 hrc.
Lte ltea ltea pro i o ii 5g 1 2 3 5g optimization 5g maintanence 5g education 5g operations prepare for 5g deploy 5g operationalize 5g nokias 5g services enable operators to prepare for 5g deployment now 5. The ebn sends and receives radio transmissions to all the mobiles using the analogue and digital signal processing functions of the lte air interface. Do it can be seen as the true mobile broadband technology. Random access transmissions are composed by mobiles mac protocol and travel as far as the mac protocol in the bs, but are completely invisible to higher layers. Lte network architecture in lte tutorial 05 may 2020. Core network article pdf available in ieee communications magazine 472. Architecture and key features of lte advanced networks. Unlike lte, the primary goal of 5g will not only be about increasing data rates and.
Evolving mobile technologies deliver great mobile experiences 3 4 4g lte delivers more capacity for faster and better mobile broadband experiences, and is also expanding in to new frontiers 2 1 2g digital wireless technologies increased voice capacity delivering mobile to the masses 5 3g optimized mobile for data enabling mobile broadband. Article pdf available january 2012 with 12,082 reads. Pdf 4g is new wireless technology developed by the third generation partnership project 3gpp with objectives of highdatarates, low. Additionally,the evolvedpacketdatagatewayepdgprovidessecurity. Long term evolution protocol overview nxp semiconductors. Several providers setup mobile networks following the gsm standard within each country components oms mobile station obs base station omsc mobile switching center olr location register subsystems orss radio subsystem. 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.
Networkpdnbyassigninganipaddressfromthe pdntotheue,amongotherfunctions. Personal communication systems pcs the goals of pcs are to provide a mobile user with voice, data, and multimedia at any place, at any time, and in any format. And in fact, wireless knowledge is essential when optimizing the service itself. Mobile communication networks andreas mitschelethiel, florian evers 4 architecture of the gsm system gsm is a plmn public land mobile network several providers setup mobile networks following the gsm standard within each country gsm system comprises 3 subsystems rss radio subsystem. Check crc of the dci format will be scrambled with the ues identity. Most of my carrier about wireless area was about the wireless communication between ue mobile phone and enbbts, i tend to assume that all other. Lte has the advantage of being backwards compatible with existing gsm and 3g technologies, enabling mobile operators to. Engineers involved in the design of lte interfaces and network equipment, as well as those involved in the first. The path to lte will include many improvements to network elements in existing mobile networks. Cellular networks khoury college of computer sciences. The 3gpp evolution for the 3g mobile system defined the utran long term evolution lte and system architecture evolution sae network. The evolved umts terrestrial radio access network eutran. It includes radio access, devices and core network. The bss which is also known as the radio network or the radio subsystem manages all the radio transmission paths between the mobile stations ms and other subsystems in the gsm architecture sauter, 2011.
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