Evolution of 3gpp umts terrestrial radio access eutra technology evolved packet system eps. Network architecture for lte and wifi interworking lte and wifi interworking. Lte procedures on s1 and x2 interfaces are described in detail. 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. Long term evolution protocol overview nxp semiconductors. Lte tutorial tutorial on lte basics rf wireless world. The tutorial on lte also covers lte protocol stack, lte physical layer, lte network architecture and so on. Summary introduction to wireless lte 4g architecture and key. This paper provides a short, but comprehensive, overview of the lte network architecture and interfaces. The evolved umts terrestrial radio access network eutran. As the ims session is being set up, sip signalling containing media requirements are exchanged between the terminal and the pcscf.
Lte network architecture userplane protocol stack controlplane protocol stack 3gpp ts 36. The evolved umts terrestrial radio access network e. Mobile class targets 100 mbps with high mobility and nomadic local area class targets 1 gbpswith low. Lte long term evolution lwa ltewifi aggregation mac media access control madm multiple attribute decision making mana management and serviceaware networking architecture mano management and network orchestration mape monitor, analyse, plan, execute mbb mobile broadband mbps megabits per second mc multiconnectivity. The ohio state university raj jain 2 9 layering protocols of a layer perform a similar set of functions all alternatives for a row have the same interfaces choice of protocols at a layer is independent of those. The x2 interface is defined between two neighbour enbs. Lte standard has been published by 3gpp as an extension of umtsbased on 3gpp standard and 1xevdobase on 3gpp2 standard technologies. This page covers lte advanced architecture and lte advanced protocol stack. Lte network architecture the lte network is broadly comprised of the following three components. More about thinking rigorously than doing rigorous math. This document presents the lte network architecture as the first technical document of lte area. Lte provides a packet switched model at the sap, but retains a circuit switched model at the phy. The lte network architecture has been presented as the first document of the lte technical document series. Reference point for the control plane protocol between eutran and.
Pdf mobile technology has emerged the needs for wireless communication over various generations of wireless. Launch of first 4g lte commercial networks in scandinavia. The evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate networks or. Xi crossy uses lte that incorporates various measures with regard to radio access technology, radio network configuration and radio interface protocol technology.
Networkpdnbyassigninganipaddressfromthe pdntotheue,amongotherfunctions. More about understanding tradeoffs than running benchmarks. Lte architecture and protocols lte telecommunication. Protocol signaling procedures in lte radisys white paper 2 network architecture in figure 1, the architecture of the lte network is given with the various interfaces between the network elements. Radio access network development department ntt docomo technical journal. Myung 2 beyond 3g international mobile telecommunications imt2000 introduced global standard for 3g. Network architecture with the focus on protocol stack main structure of this illustration is based on 3gpp 36. Lte network architecture and protocols design, deployment and. Lte home lte overview lte basic parameters lte network. Evolution of the complete 3gpp umts radio access, packet core and its integration into legacy 3gppnon3gpp networks. The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission. 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. Main functionalities of each network node are discussed in detail along with examples. Jul 27, 20 this videos explains the lte network and protocol architecture and mapping logical and transport channels in lte.
Lte network architecture the highlevel network architecture of lte is comprised. Survey on lte network architecture and its security aspects. Lte architecture and interfaces linkedin slideshare. Network architecture lte the umts long term evolution. System architecture evolution sae is the core network architecture of 3gpps lte wireless communication standard sae is the evolution of the gprs core network, with some differences. Ue is the cellular device equipped with a universal subscriber identity module known as sim. Moreover, it describes the lte network architecture. Architecture and key features of lteadvanced networks. The pdf is the network entity where the policy decisions are made. 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. Course contents historical vision lte capabilities system architecture 3. This paper presents an overview of the ng radio access network ng ranarchitectureandkeyprotocols. Following diagram shows the functional split between the eutran and the epc for an lte network. We will also cover 5g deployment scenarios from the specs as well as some of the informative web resources.
Provides connectivity to the ue to external packet data networks. At user plane side, the application creates data packets that are processed by protocols such as tcp, udp and ip, while in the control plane, the radio resource control rrc protocol writes the signalling messages that are exchanged between the base station and the mobile. The lte network architecture rmd engineering college. It resides out of the lte network and connected to pdn gateway through sgi interface. The paper also briefly touches the bearer establishment procedure. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. Next, we discuss the endtoend protocol layering in a lte network, network selection and discovery, and ip address allocation. Feb 20, 2016 this video tutorial talks about lte architecture in detail to give holistic view of lte architecture. Saes main component is the evolved packet core, also known as an epc. Lte network architecture and protocolpdf free download. Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. Lte advanced architecture for eutran consists of pgw,sgw,mme,s1mme,enb,henb,henbgw, relay node etc. This videos explains the lte network and protocol architecture and mapping logical and transport channels in lte. The core network is then the overall entity that interfaces to external networks including the public phone network and other cellular telecommunications networks.
Kailash vijayan network architecture the lte network architecture is designed with the goal of supporting packetswitched traffic with seamless mobility, quality of service qos and minimal latency. Gprs tunnelling protocol for the user plane gtpu tunnels user data between enodeb and the sgw as well as between the sgw and the pgw in the backbone network. Ims ip multimedia subsystem is a standalone system. The lte network called eps evolved packet system is an endtoend e2e all ip network. Geran and utran networks are shown for completeness. Protocol ip connectivity between user equipment ue and the packet data network pdn, without any disruption to the end. Introduction to networking protocols and architecture. Additionally,the evolvedpacketdatagatewayepdgprovidessecurity.
Lte network architecture in lte tutorial 05 may 2020. Pdcp packet data convergence protocol pnf physical network function pon passive optical network ran radio access network. Dec 27, 20 the pdf is the network entity where the policy decisions are made. Lte advanced protocol stack consists of user plane and control plane for as and nas. Type 2 lte frame structure type 2 lte frame structure lte protocol. 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 radio protocol architecture for lte can be separated into control plane architecture and user plane architecture as shown below. 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.
Umts system architecture and protocol architecture overview on overall system architecture umts network architecture and elements mobile station highlevel functions umts domains and strata umtsgprs protocol architecture references. The paper introduces control plane and user plane architecture. Much of the lte standard addresses the upgrading of 3g umts to what will eventually be 1g mobile communications technology. A packetswitched approach allows for the supporting of all services including voice through packet connections. Long term evolution lte is explicitly designed to deliver highspeed, high quality services to mobile subscribers. Reference point for the control plane protocol between eutran and mme. On december 24, 2010, the xi crossy1 lte service was launched in tokyo, nagoya and osaka region. It is shown how the lte system breaks new ground in terms of its degree of support for self. The user equipment or ue is a major element of the overall 3g umts network architecture. More about practicality than optimality done right, can be a powerful thing. Main structure of this illustration is based on 3gpp 36.
Randy weaver, guide to network defense and c 2 p a g e network hardening course resources text. From theory to practice wiley 2009, this paper provides a short, but comprehensive, overview of the 3gpp release 8 lte network architecture and interfaces, showing how it can be deployed in an optimized and efficient manner. In chapter 2, the lte network reference model is defined and the eps entities and interfaces are explained. Lte is now the dominant air interface technology across the united states and is seeing rapid adoption in countries across the globe. The highlevel network architecture of lte is comprised of following three main components. The s6 interface is based on diameter protocol as used in ip multimedia system ims. Protocol architecture an overview sciencedirect topics. 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. 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. The idea of ims is old, but after its deployment with lte users and operators can harness the true power of ims. Lte long term evolution lwa lte wifi aggregation mac media access control madm multiple attribute decision making mana management and serviceaware networking architecture mano management and network orchestration mape monitor, analyse, plan, execute mbb mobile broadband mbps megabits per second mc multiconnectivity. Generation 4g technologies such as long term evolution lte. Protocol ip connectivity between user equipment ue and the packet data. The radio protocol architecture for lte can be separated into control plane architecture and user plane architecture.
In figure 1, the architecture of the lte network is given with the. The paper presents the overall architecture, migration path options, the 5g base station architecture and key protocol components. The ohio state university raj jain 2 9 layering protocols of a layer perform a similar set of functions all alternatives for a row have the same interfaces choice of protocols at a layer is independent of those of at other layers. Lte advanced architecture lte advanced protocol stack. The overall eps network architecture is presented, giving an overview of the functions provided by the core network cn and the e. Type 2 lte frame structure type 2 lte frame structure lte protocol architecture.
A standard lte system architecture consists of an evolved umts terrestrial radio access network, more commonly known as eutran, and the system architecture evolution, also known as sae. Jeffrey cichonski joshua m franklin michael bartock s. User plane protocols figure 2 shows the protocol stacks for. Pdf survey on lte network architecture and its security aspects. 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. A special channel through which the mobile can contact the network without any prior scheduling. Lte network architecture in lte lte network architecture in lte courses with reference manuals and examples pdf. This video tutorial talks about lte architecture in detail to give holistic view of lte architecture. 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.
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 evolved packet core communicates with packet data networks in the. Patterns in network architecture a return to fundamentals 2 p a g e network hardening course resources text. The evolved packet core communicates with packet data networks in the outside world such as the. Network architecture lecture on network architecture computer network architecture lte network architecture and protocol. Protocol signaling procedures in lte radisys white paper. 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.
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