Lte advanced protocol stack consists of user plane and control plane for as and nas. Lte architecture, lte system architecture, lte components this page offers information about long term evolution lte, its architecture and components. The user plane protocol stack between the enode b and ue. It is all ip network and is based on packet switching for voice as well as data unlike 2g3g where it. Lte architecture and interfaces overview telecom hub. Increased bandwidth endtoend ip simplified architecture. Lte i long term evolution is initiated by 3gpp i to improve the mobile phone standard to cope with future technology evolutions and needs 2. Mme mobility management entity, sgw serving gateway, pgw pdn gateway.
The yatehsshlr exports a json api for integration with any sim management and crm systems. Protocol signaling procedures in lte radisys white paper 6 4. A usim stores userspecific data very similar to 3g sim card. Mobility management entity mme controls the highlevel operation of the mobile, by sending it signaling messages about issues such as security and the management of. Allip, simplified network architecture new, allip mobile core network introduced with lte endtoend ip allip clear delineation of control plane and data plane simplified architecture. Lte network architecture evolution direct tunnel 3gpp rel 8 lte internet evolved node b mme sae gw lte takes the same flat architecture from internet hspa. Severity critical description nghlr ss7 stack software is not robust and suffers from remote denial of service.
When mobile networks deploy lte radio access technology, conformity to. This keeps information about the users phone number, home network identity and security keys etc. Voice over lte, or volte is a gsma profile of the standards definition for the delivery of services currently provided via circuit switch networks mainly voice and sms over the packet switched only network of lte, leveraging the core network ip multimedia subsystem ims. Volte service description and implementation guidelines. Long term evolution lte is the next generation 3gpp radio access network evolved umts terrestrial radio access network eutran system architecture evolution sae is the 3gpp next generation standard for mobile networks providing. Lte 4g network architecture lte core network mobile. Long term evolution advanced lteadvanced network is the continuation of 3gpplte 3gpp. Now, with lte long term evolution taking shape, the ims platform has been given a new role and a niche that will carry it a considerable distance into the future. 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 architecture in easiest way in hindi 4g architecture. This architecture has great appeal to carriers with a. In lte architecture, evolved utran eutran is an important role which is the air interface of lte upgrade path for mobile networks meanwhile it is accompanied by an evolution of the nonradio aspects under the term system architecture evolution sae, which includes the evolved packet core epc network. Lte advanced architecture for eutran consists of pgw,sgw,mme,s1mme,enb,henb,henbgw, relay node etc. Long term evolution advanced lte advanced network is the continuation of 3gpp lte 3gpp.
There are only two nodes in the sae architecture user plane. The highlevel network architecture of lte is comprised of following three main components. First, the lte network reference model is defined and its basic evolved packet system eps entities and the functions of each entity are. Russell walks you through the role of the mme, the sgw and the pgw. Impact enables any person sending malicious sccp traf. The mme update the hss with the location of the ue using the update location request message using the diameter protocol. Lte security for mobile service provider networks white paper 2015, juniper networks, inc. Lte tutorials and call flows long term evolution signaling flows and tutorials for lte protocol layers. The lte network architecture has been presented as the first document of the lte technical document series. First, the lte network reference model is defined and its basic evolved packet system eps entities and the functions of each entity are described. Ieee communications magazine september 20 7 figure 1. Yatehsshlr lte, gsm and wifi subscriber server for mno.
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. The mobility management entity mme controls the highlevel operation of the mobile by. This paper provides an overview of the mac for 3gpp long term evolution lte also referred to as eutran, with a focus on the handset or. The epc is the latest evolution of the 3gpp core network architecture. The 4g network architecture consists of the following elements. The highlevel network architecture of lte is comprised of following three. The mme also provides the control plane function for mobility between lte and 2g3g access networks with the s3 interface terminating at the mme from the. Mobility management entity overview ciscomobilitymanagemententitymmeiscriticaltothenetworkfunctionofthe4gmobilecorenetwork, knownastheevolvedpacketcoreepc. Basic lte architecture video eutran, enodeb, epc, sgw, pgw, mme, hss, pdn by telcoma global. This document presents the lte network architecture as the first technical. The yatehsshlr includes a home location register hlr, an authentication center auc 2g3g and a home subscriber server hss 4g lte. The lte network architecture computer science university of. The goal of volte is to emulate the services of the.
Long term evolutionsystem architecture evolution ltesae. Mme tracks the users movement, while the home subscriber server hss. In above diagram it shows interface bw ofcs and pgw is gz which. Lte security trends and requirements lte architecture from an architecture perspective, the major difference between 2g3g and lte is in the access network, or ran.
The evolved umts terrestrial radio access network e. Tracking area update signaling flow the flow describes a tracking area update that results in mme change. It describes the role of the enodeb in the network and key concepts such as. Functions related to bearer management this includes the establishment, maintenance and release of the bearers and is handled by the session management layer in the nas protocol. This document provides a brief overview of the lte network architecture as the first technical document of lte area. Mme selection for ho with mme change, sgsn selection for ho to 3g2g. Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. System architecture evolution sae is the core network architecture of 3gpps lte wireless communication standard. Lte security keys and procedures presentation and signaling flow that describe the key exchange and. This page offers information about long term evolution lte, its architecture and components. Ims ip multimedia subsystem is a standalone system.
In case of dispute, the reference shall be the printing on etsi printers of the pdf version kept on a. Mme lte esr procedure mo csfb call setup duration umts acquisition umts. Lte refers to long term evolution, and the architecture of the lte network is as following, lte network architecture. Confidential reliance jio infocomm limited 1 2g, 3g and lte network architecture lte has a flat architecture. This page covers lte advanced architecture and lte advanced protocol stack. Sae is the evolution of the gprs core network, with some differences. Lte tutorials covering the architecture, physical layer and protocol stacks. Lte s6as6d interface description 9106857001 revision a 10 2. Lte architecture ip multimedia subsystem computer network. Long term evolution lte is a leading 4g wireless broadband technology developed by the third.
And in fact, wireless knowledge is essential when optimizing the service itself. Lte is a trade mark of etsi currently being registered. Volte voice over lte as specified in recommendation ir. Handover sgw mme source target enb enb enb enb sgw ue ue moving enb enb enb enb inter eutran and sgw handover intra eutran handover pgw related blogs basic requirement of handover ue ip address should not be changed packet loss and. In lte network, the control plan messages from the enodeb must first pass by the mme, then it goes to the sgw and the pgw.
Find out inside pcmags comprehensive tech and computerrelated encyclopedia. A concatenation of policy decision function pdf and charging rules function. Long term evolution, lte network contains below nodes. Network architecture for lte and wifi interworking lte overview. Lte advanced architecture lte advanced protocol stack.
Ue henb henb gwlte mme sgw hss csg list srv s1 s6a uu s1mme s1u s11 vplmn. Basic lte architecture video eutran, enodeb, epc, sgw. The radio protocol architecture for lte can be separated into control plane architecture and user plane architecture as shown in figure 3 and figure 4. 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. Lte mobile broadband networks might look like an obvious job for a wireless network engineer. It resides out of the lte network and connected to pdn gateway through sgi interface. Lte long term evolution is known as the evolution of radio access technology conducted by 3gpp. Introduction to evolved packet core to cvtdallas online. The radio access network will evolve to eutran evolved umts terrestrial radio access network, and the correlated core network will evolved to sae system architecture evolution. The lte network architecture explained in this document applies to a lte only network provided by a single operator and thus has.
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