Lte architecture supports hard qos, with endtoend quality of service and guaranteed bit rate gbr for radio bearers. Introduction to evolved packet core to cvtdallas online. Umts evolved packet core epc network tutorialspoint. This tutorial emphasizes the impacts of ims over the eps access network. The pdf is the network entity where the policy decisions are made. A usim stores userspecific data very similar to 3g sim card. Introduction to evolved packet core epc and evolved packet system eps 2. 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. It simulates the working of a typical epc for handling signaling and data traffic. Policy and charging rules function pcrf in lte epc core. It resides out of the lte network and connected to pdn gateway through sgi interface. This tutorial will give you enough understanding on lte technology from where you can take yourself at higher level of expertise. Technical overview of 3gpp lte indian institute of.
Openairinterface 5g overview, installation, usage florian kaltenberger oai workshop, bupt, 27. Myung 2 beyond 3g international mobile telecommunications imt2000 introduced global standard for 3g. Indeed, some operators have already started services with this latest technology. Evolved packet core epc network equipment for long term evolution lte toshiki hayashi long term evolutionevolved packet core lteepc is a system that will follow on from the 3g mobile system and mobile operators around the world are planning to use it. Frequency division duplexing fdd and time division duplexing tdd both paired and unpaired. The goal of simulating this example is to simulate the lte x2 based handover, and to explore the performance evaluation of a longrunning tcp. The idea of ims is old, but after its deployment with lte users and operators can harness the true power of ims. Access technology specific epc network selection procedures. This keeps information about the users phone number, home network identity and security keys etc. Core network evolution from epc to 5g core made easy ericsson. Audience this tutorial has been designed for audiences with a need to understand the lte technology basics in very simple terms. The evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate. It is stacked on packet data convergence protocol pdcp, radio link control and mac layers.
Lte is all ip based network and mainly designed for internetdata applications. Because the lte mac is fully scheduled, qos is a natural fit. Call flow is how signaling and sessions are created across an lte network. With long term evolution lte comes a myriad of new and exciting attributes. This volte tutorial covers volte voice over lte basics, types of volte which include volte using imsvoip and volte using csfbsrvcc. The top layer of the control plan is called radio resource control rrc.
Systems beyond imt2000 imtadvanced is set to introduce evolutionary path beyond 3g. Simplified epc one mme and one sgw sgw and pgw in the same node no s5s8 interface focus on connected mode rrc connected, emm registered, ecm connected some important design choices nicola baldo the lena ns3 module 4. Where fragmented hybrid core networks can slow down 5g introductions, decrease agility and increase opex. 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.
Lte qos lte architecture supports hard qos, with endtoend quality of service and guaranteed bit rate gbr for radio bearers. 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. Lte traffic generation and evolved packet core epc network planning by dima dababneh, b. This document presents the lte network architecture as the first technical document of lte area. Lte evolved from an earlier 3gpp system known as the universal mobile telecommunication system umts, which in turn evolved from the global system for mobile communications gsm. 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. Epc also fulfills the requirements for security, qos.
No circuit switched components new approach in the interconnection between radio access network and core network imspdn epc eutran lteue. Introduction to lteepc eps network with comparison with. A concatenation of policy decision function pdf and charging rules function. Lte epc fundamental part 1 lte telecommunication high. 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. Lte and epc test an overview of test concept and tools for trials. Evolved packet core epc is an all ip core network architecture through which lte and other 3gpp and non3gpp access networks connects. Lte and epc testan overview of test concepts and tools for trials 3 specific lte test areas overview creating an overall framework for the testing, evaluation, and optimization of lte and sae is a large and complex topic this document provides a starting point that covers the topic at a relatively high level. Mobile class targets 100 mbps with high mobility and nomadic local area class targets 1 gbpswith low.
This document is originally edited by justin ma and it is free to share to everyone who are interested. Lte provides downlink peak rates of at least 100mbits, 50 mbits in the. Sc a thesis submitted to the faculty of graduate and postdoctoral affairs in partial fulfillment of the requirements for the degree of master of applied science in electrical and computer engineering. The lte network architecture strategic white paper 1 1. May 18, 2018 with an endgame defined by a dual mode core network for both 5g epc and 5g core. The evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate networks or. The epc is a multiaccess core network based on the internet protocol ip. Hence to support voice over lte there are two options. Just as ethernet and the internet have different types of qos, for example, various levels of qos can be applied to lte traffic for different applications. Epc components serving gateway sgw, pdn gateway pgw mobility management entity mme, policy and charging control function pcrf 4. Ims ip multimedia subsystem is a standalone system. Consists of an evolved packet core epc and evolvedutran eutran. Lte uu is the point of reference for radio interface between eu and enodeb, encompasses control plane and user plane.
The goals for lte include improving spectral efficiency, lowering costs, improving services, making use of new spectrum and reformed spectrum opportunities, and better integration with other open standards. The epc and sgsn support mobility management between the lte and 3g access systems, and. Introduction this workshop is a fast track course to cover the basic architecture and functionalities of the lteepc from the packet core perspective. A logical node controlling qos see8 and charging in user data transfers. The module discusses the benefits and drivers behind moving to 4g lte solution from a service provider and customer perspective. Feb 04, 2014 this presentation slides are intended to give detail introduction of lte epc network to the participants. Long term evolution lte and system architecture evolution sae. Virtualized evolved packet core for lte networks vepc vepc is a simple virtualized form of long term evolution evolved packet core lte epc.
Ericsson can simplify the core network evolution journey, from epc to 5g core. Evolved packet core epc is a framework for providing converged voice and data on a 4g longterm evolution lte network. Lteepc workshop lteepc technology essentials hussien mahmoud ps coreepc consultantfast track lteepc technology essentials fast track 2. The epc is the latest evolution of the 3gpp core network architecture. The highlevel network architecture of lte is comprised of following three main components. Lte identifiers presentation lte signaling protocol define a large number of identifiers for ues, rabs and signaling endpoints. Lte traffic generation and evolved packet core epc network. 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. Jun, 20 this module provides an introduction into 4g lte. Evolved packet core epc network equipment for long term. The presentation covers the imsi, guti, gummei, imeisv, rnti, tai and apn.
Evolved packet core epc in 4g lte networks by telcoma. Abstract lte technologies for unlicensed spectrum are gaining both attention and momentum within various regulatory bodies european cept, us fcc, standards groups 3gpp, etsi and industry fora wifi. Unleashing the potential of opensource in the 5g arena. The epc is a multiaccess core network based on the internet protocol ip that enables operators to deploy and operate one common packet core network for 3gpp radio access lte, 3g, and 2g, non3gpp radio access hrpd, wlan, and. Lte is a trade mark of etsi currently being registered. Lte tutorial presentation lte presentation with audio narration. As the ims session is being set up, sip signaling containing media. Aug 09, 2018 evolved packet core epc is a framework for providing converged voice and data on a 4g longterm evolution lte network. Pdf the paper discusses the 3gpp evolved packet core epc as an implementation of a flat. Ofdm basics, lte channels, signaling procedures and mimo are covered. This tutorial has been designed for audiences with a need to understand the lte technology basics in very simple terms.
In this tutorial, participant will be getting introductory knowledge of mobile internet core gprs network with lots of demonstrations and explanatory graphs of how internet works for mobile network and than with detail comparison of lte epc network. The epc consists of mme, sgw, pgw and pcrf functions for performing authentication, mobility management, bearer control, charging and qos control. The evolved umts terrestrial radio access network eutran. This course is designed to provide students with indepth information regarding lte epc architecture. It is the most widely deployed 3gpp technology and its adoption has been the fastest compared to its predecessors 2g, 3g. Enabling network programmability in lteepc architecture using openflow conference paper pdf available may 2014 with 1,350 reads how we measure reads. In gsm, the architecture relies on circuitswitching cs. Lte core functions and service procedures core network functions. The lte network called eps evolved packet system is an endtoend e2e all ip network.
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