Lte eutran and its access side protocols radisys white paper 3 radio protocol architecture access stratum logically, lte network protocols can be divided into control plane responsible for managing the transport bearer and user plane responsible for transporting user traffic. One change was that a number of the functions previously handled by the core network were transferred out to the periphery. Evolved packet core epc in 4g lte networks by telcoma. Be careful not to damage your fingernails when you remove the back cover. And in fact, wireless knowledge is essential when optimizing the service itself. Prerequisites basic understanding on any of the network technologies like gprs, gsm, core network, radio interfaces etc is expected before diving into the tutorial. Volte tutorial this voice over lte beginners guide will help you to understand the fundamentals of ip based voice communication in the 4g lte network. Opnet is an efficient discrete event simulator to simulate the behavior and performance of any network. The term lte is typically used to represent both lte and sae. Eps consists of an ipbased access called lte long term evolution of 3g and a packet core network called epc evolved packet core. Essentially this provided a much flatter form of network. 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. A concatenation of policy decision function pdf and charging rules.
The evolved packet core communicates with packet data networks in the outside world such as. This document presents the lte network architecture as the first technical document of lte area. A tutorial on the funtionality by jatinder jasbir singh. Furthermore, this white paper addresses the core network impacts of traffic migration from gsm to lte and how to integrate lte management into operators network management systems in a cost efficient way. Different issues related to the physical deployment in the access, metro and core networks of the 5g network are discussed in section 5 while in section 6 we present software. The lte radio access design is optimized for ipbased services. Lte a meets and exceeds all requirements for 4g as specified in imtadvanced. Release 8 was frozen in december 2008 and this has been the basis for the first wave of lte equipment.
Eps is a broadband access network connected to the ip world internet intranet. The highlevel network architecture of lte is comprised of following three main components. Network slicing is a good example of the need for automation because there will be many more logical entities to commission, provision and manage. The main part of sae is the evolved packet core epc, otherwise known as the sae core. 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. Long term evolution lte a tutorial network systems lab.
Some lte services may not be available depending on the service provider. In the other option, nsa and sa mode is working together and both core networks. Sep 03, 2018 this covers the 5g core network as it is today after june 2018s publication of rel 15 stage 3. Mobile core network an overview sciencedirect topics.
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 evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate networks or. Lte is a fourth generation mobile communication technology standardized by the 3gpp which enables support for broadband connectivity to mobile devices, permitting the delivery of demanding multimedia information to any device, anywhere, anytime. Expeto offers the entire lte core network stack in a platform as a service paas model.
The lectures also cover channel mapping and ue categories. Pdf in the current evolved packet core epc network for long term evaluation lte mobile network features complicated control and data. Here, we are going to further deconstruct end to end volte network from user device to ims core. Myung 2 beyond 3g international mobile telecommunications imt2000 introduced global standard for 3g. Our lte epc cores are highly scalable, high performance and resilient to ensure highest uptime and availability. This creates a necessity of functional, integration, and mass testing of the lte core. Lte tutorial 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. The smooth operation of 4g services requires a scalable, properly working lte core network, among others. Lte a can aggregate up to 5 carriers to make up to 100 mhz 4. Mobile class targets 100 mbps with high mobility and nomadic local area class targets 1 gbpswith low. 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 proposed tutorial will be a collections of background, stateoftheart, and open research topics in the area of cloud radio access networks. Gan provides a controller node the gan controller ganc inserted between the ip access network i. This covers the 5g core network as it is today after june 2018s publication of rel 15 stage 3.
Ralph stephen gibbs long term evolution lte is next generation mobile broadband technology, which promises to offer significantly higher data rates, better quality, and more economical. Sae system architecture evolution is the corresponding evolution of the gprs3g packet core network evolution. Network functions virtualization provides the basis for an ondemand, cloudbased environment that can be rapidly deployed using commodity offtheshelf hardware. Mar 05, 2018 volte ims architecture in simplified way.
Nov 12, 2019 we can see that in nsa mode, epc and 5g core network is working together and connected to lte radioaccess network. Lte a has frequency reuse factor of 1 since spectrum is expensive, uses highorder mimo. The first deployments were simply known as lte, but later deployments were designated 4g lte advanced and later still 4g lte pro. Lte specifications are very stable, with the added benefit of enhancements having been. Both radio and core network related features are covered, but focus is on radio interface functionality. For details about service availability, contact your service provider. Volte sip handset sip support, uac, uas, user agent, sipua, underlying lte network dedicated bearer, qci, default bearer, ims core network sip servers, pcscf, icscf, scscf, tas, bgw, mrf, atcf, atgw, mgcf, pstn breakin or breakout calls. The 3gpp evolution for the 3g mobile system created the new base station system, called evolved umts terrestrial radio access network eutran and a new core network, called evolved packet core epc as a result of two standardisation projects.
We offer a complete range of epc and ip core infrastructure for small, medium and large scale networks. We offer opnet network simulator final year projects to implement the various network communications. Lte 4g network architecture lte core network mobile. This article looks at the evolved packet core epc, the core network of the lte system, giving an overview of the architecture of the core network, describing some of its key elements. Long term evolution lte a tutorial network systems. Systems beyond imt2000 imtadvanced is set to introduce evolutionary path beyond 3g. Aug 09, 2018 evolved packet core epc is a framework for providing converged voice and data on a 4g longterm evolution lte network. The core network will not need to manage mobility, authentication or security control as the user changes access technology in the mobile network. Core network, radio interfaces etc then it will help you a lot in understanding the concepts explained in this tutorial. Ltea can aggregate up to 5 carriers to make up to 100 mhz 4.
With this continued strong evolution lte steadily paves the way for 5g while reusing the installed base. In the next section we shall discuss about the various technical challenges and discuss in detail the key technologies which make the transition from 3g to 4g possible. Volte ims architecture ims core cscf, tas, mrf, bgw. Note that standards use terminology node b for base. The gan provides an overlay access between the terminal and the cs core without requiring specific enhancements or support in the network it traverses. 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. Ltea meets and exceeds all requirements for 4g as specified in imtadvanced.
The gan provides an overlay access between the terminal and the cs core without requiring specific enhancements or support in. This is followed by lectures that cover lte frequency bands, ofdm, ofdma, scfdma and lte signaling. Lte tutorial for beginners learn lte online training. Long term evolution lte and system architecture evolution sae. 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. Radio access network tutorial pdf the entities in utran are. Lte mobile broadband networks might look like an obvious job for a wireless network engineer.
Pdf current cellular networks based on third generation partnership project 3gpp and 3gpp2. Full access to mobile multimedia at high speed is an offer very hard to resist for the common internet consumers. Mme,sgw,hss and pgw will form epcevolved packet core. Packet core epc, more specifically to the mobility management entity mme by means of the s1mme. This is in contrast to gsm, wcdma, and cdma, which support both circuit and packetswitched services. User plane protocols figure 2 shows the protocol stacks for. Our zeroepc solutions for smaller and closed networks.
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. The lte network architecture computer science university of. The university of texas at arlington, 2010 supervising professor. The epc is the latest evolution of the 3gpp core network architecture. A network slice could span across multiple parts of the network e. Nokia siemens networks lte 1800 mhz introducing lte with.
Though i assumed you have a very little or zero understanding on 2g and 3g technologies like gsm. Lte both radio and core network evolution is now on the market. The lte network called eps evolved packet system is an endtoend e2e all ip network. A network slice comprises dedicated andor shared resources, e. It provides a packetonly access with no connection to the circuitswitched mobile core network. A logical node controlling qos see8 and charging in user data transfers. The course also describes emerging 5g technologies as defined by 3gpp. Opnet tutorial to enhance comprehensive environment to develop and support various communication network model and distributed system. 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.
Pdf enhanced mobile packet core network scheme for next. It provides enough depth into the concepts of lte technology which can lead to higher level of expertise. Ericsson lte now delivers gigabit speeds to more than ten markets worldwide, adding capacity and cutting timetocontent, for a network that keeps one step ahead of its customers. This tutorial will give you enough understanding on lte technology from where you can take yourself at higher level of expertise. This tutorial emphasizes the impacts of ims over the eps access network. Policy and charging rules function pcrf in lte epc core. If it is voip to voip call, it will remain within lte network and supported using voip protocols. This tutorial has been designed for audiences with a need to understand the lte technology basics in very simple terms. Nfvbased lte core in the cloud open networking foundation. Evolved packet core epc, which was specified at the same time as lte 3gpp release 8, as the core network to accommodate lte and other radio access systems 1. We can see that in nsa mode, epc and 5g core network is working together and connected to lte radioaccess network.
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