Evolution sae, the core network architecture for lte. Since lte supports handover and roaming to existing mobile networks, all these devices can have ubiquitous mobile broadband coverage from day one. 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. This paper will concentrate also to describe the main functions of the most important network elements. In this paper we propose a new design solution for network architecture of future 5g mobile networks. The lte network called eps evolved packet system is an endtoend e2e all ip network. Core network epc for lte ntt docomo technical journal vol. 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. Check crc of the dci format will be scrambled with the ues identity. Pdf 4g is new wireless technology developed by the third generation partnership project 3gpp with objectives of highdatarates, low. Qualcomm the corenetworkinabox is typically virtualized and is deployed on premises to ensure that traffic stays local to the site. With softwaredefined networking sdn and network functions virtualization nfv supporting the underlying physical infrastructure, 5g comprehensively cloudifies access, transport, and core networks.
These standards define an allip network as a base for the lte sae. The first deployments were simply known as lte, but later deployments were designated 4g lte advanced and later still 4g lte pro. What about the surface pro i do not need to get the 2 right gps golf pro features various. Points covered include a detailed description of various components of the radio interface. The lte architecture consists of lte eutran and lte evolved packet coreepc. 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. However, the ongoing contribution of licensed mobile operators to private wireless networks should not be overlooked. Cband is a globally harmonized 5g spectrum and is set to be the.
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. Because this type of network architecture is agile enough to be moved without running more cabling, its possible to change direction without delay. The mobile experience is expanding everywhere 1 source. Drivetestenabled devices can log the current rank, number of transmit and receive paths. Pdn refers to public data network, and it is the network that the ue would like to connect to. 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. This architecture is defined as part of the system architecture evolution sae effort. Increased bandwidth endtoend ip simplified architecture. The 4g mobile system based on open wireless platform architecture will become the next wave in wireless communications. Core network article pdf available in ieee communications magazine 472. Architecture for localarea private lte networks source. It includes radio access, devices and core network. The architecture of lte network and working principle lte is a standard for wireless data communications technology and an evolution of the gsmumts standard. 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.
This page describes lte network architecture with system elements. The mobile equipment comprised of the following important modules. Lte standard has been published by 3gpp as an extension of umts based on 3gpp standard and 1xevdobase on 3gpp2 standard technologies. The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission. Much of the lte standard addresses the upgrading of 3g umts to what will eventually be 4g mobile communications technology. Lte 4g network architecture lte core network mobile. Mobile broadband is the 4g effort of north america and parts of asia.
The highlevel network architecture of lte is comprised of following three main components. System architecture evolution national chengchi university. 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. 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. Networkpdnbyassigninganipaddressfromthe pdntotheue,amongotherfunctions. Additionally,the evolvedpacketdatagatewayepdgprovidessecurity.
The evolved umts terrestrial radio access network eutran. 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. The servicedriven 5g network architecture aims to flexibly and efficiently meet diversified mobile service requirements. 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 mobile network virtualization article in mobile networks and applications 164. 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.
Long term evolution lte a tutorial network systems. Lte mobile communicates with just one base station and one cell at a time and there are following two main functions supported by enb. Key words long term evolution, lte, umts, hspa, flat architecture 1. Architecture and key features of lte advanced networks. Long term evolution lte is designed to deliver very fast data speeds faster than most home wired broadband services. 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.
The lte sae does not have separate packet switched data traffic and circuit switched voice network. Architecture evolution total cost of ownership business and technology expertise leveraged today will set a foundation for success. The technology leads to integrate the computing network for human needs. Lte has the advantage of being backwards compatible with existing gsm and 3g technologies, enabling mobile operators to. And in fact, wireless knowledge is essential when optimizing the service itself. Engineers involved in the design of lte interfaces and network equipment, as well as those involved in the first. 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. 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. Yi bing lin wireless and mobile network architectures wiley publications pdf. A special channel through which the mobile can contact the network without any prior scheduling.
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. Kth information and communication technology 2g30 mobile and wireless network architectures maguire total pages. 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 path to lte will include many improvements to network elements in existing mobile networks. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals.
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. But underneath the antennas, the core network engineer is the one that ensures full connectivity in the entire mobile network. Introduces the key elements of the lte and epc architecture. 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. Target networks in 5g era embracing mobile network 2020s 04 evolution of all spectrum. This book explains the evolutions of architecture for mobiles and summarizes the different technologies.
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. 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. 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. Lte system according to the release 8 version of the specifications. 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. On downlink, the mac in the ue interprets the transport format. 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. 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. Lte network architecture in lte lte network architecture in lte courses with reference manuals and examples pdf. This document presents the lte network architecture as the first technical document of lte area.
In addition to lte, 3gpp is also defining ipbased, flat network architecture. Unlimited performance with the latest intel core 2 duo processor exe 20061027 25214 couple of androids and iphone 5. 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. Maguire personal communication systems pcs introduction 18 of 92. 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. 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. Lte provides a packet switched model at the sap, but retains a circuit switched model at the phy. 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. Tmobile lte service i n ter corenet voice core call server voice core mgw hrcxxx01 hrcxxx02 hrc. Architecture and interfaces elearning exploring lte. The evolved packet core communicates with packet data networks in the outside world such as the internet. 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. Long term evolution protocol overview nxp semiconductors.
The bss consist of base station controllers bsc and the base transceiver stations bts. As lte matures and rel15 standard freezes, mobile operators should start carefully considering available network upgrade paths. Umts network architecture and elements mobile station highlevel functions umts domains and strata umtsgprs protocol architecture references. It is designed to enable the reader to become conversant rapidly with the main principles of the lte network architecture. A baseline architecture for private lte is shown in figure 2. Lte mobile broadband networks might look like an obvious job for a wireless network engineer. Unlike lte, the primary goal of 5g will not only be about increasing data rates and. Long term evolution lte is the next step forward in cellular 3g services. Lte network architecture in lte tutorial 05 may 2020. Cellular networks khoury college of computer sciences. Mobile 4g lte lte, lte advanced mobile 1g amps, nmt, tacs richer content.
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. Teletok new lte 4g mobile network blue arcus ba is primed to revolutionize tokelaus telecommunication industry. The proposed design is based on usercentric mobile environment with many wireless and mobile. 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. Evolutionary analysis of gsm, umts and lte mobile network. Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. Lte has the advantage of being backwards compatible with existing gsm and 3g technologies, enabling mobile operators to deploy lte and. Most of the umts networks worldwide have been already upgraded to high speed. The ebn sends and receives radio transmissions to all the mobiles using the analogue and digital signal processing functions of the lte air interface. At the same time, these technologies and the existing. The 3gpp evolution for the 3g mobile system defined the utran long term evolution lte and system architecture evolution sae network. Do it can be seen as the true mobile broadband technology. Article pdf available january 2012 with 12,082 reads.
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