A baseline architecture for private lte is shown in figure 2. A flexible network architecture should include all common wan transport offerings as options without significantly increasing the com. The highlevel network architecture of lte is comprised of following three main components. The home subscriber server hss component has been carried forward from umts and gsm and is a central database that contains information about all the network operators subscribers. Typical mobile network architecture with mobile backhaul network portion highlighted. The physical layer itself maintains the continuous connection model, especially on the downlink, where there is continuous transmission. 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. Lte architecture article about lte architecture by the. In this section, we present a brief description of the lte network architecture and the essential procedures of radio connection establishment,mobility management,and security setup between a device and an lte network. A special channel through which the mobile can contact the network. Systems beyond imt2000 imtadvanced is set to introduce evolutionary path beyond 3g. The air interface and packet core enable the lte mobile user to connect to external data networks such as the internet. The lte network architecture has been presented as the first document of the lte technical document series.
The ltesae architecture and concepts have been designed for efficient support of. Nsa network to be complemented and supported by lte network. Below is a brief description of each of the components shown in the above architecture. See the table in appendix b for the acronyms used in this paper.
A roaming user is connected to the eutran, mme and sgw of the visited lte network ltesae allows the pgw of either the visited or the home network to be used inter working with other networks. While the former will take time to develop, the latter offers limited 5g benefits confined to the improvement in some network kpis. We will also cover 5g deployment scenarios from the specs as well as some of the informative web resources. 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 of packets between mobile devices and external packet. Lte mobile broadband networks might look like an obvious job for a wireless network engineer.
Nov 30, 2017 4g network architecture is essentially a cellular network architecture wherein with the current stage of lte release, 1gbps is the ideal achievable downlink speed and it permits a high speed uplink as well. Reliance jio, a large isp in india has created a superfast lte network that can reach up to 5 mbps and serve 90% of the population in india, an outstanding 1. Mobile class targets 100 mbps with high mobility and nomadic local area class targets 1 gbpswith low. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. A network run by one operator in one service is known as a public land mobile network plmn.
Networkpdnbyassigninganipaddressfromthe pdntotheue,amongotherfunctions. Jul 05, 2016 5g network architecture will be designed based on access sites and threelayer dcs. Drivetestenabled devices can log the current rank, number of transmit and receive paths. Mobile 4g lte lte, lte advanced mobile 1g amps, nmt, tacs richer content video more connections 1 peak data rate for gsmgprs, latest evolved edge has peak dl data rates capable of up to 1.
This document presents the lte network architecture as the first technical document of lte area. Architecture and interfaces elearning exploring lte. 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. Unlike the wifi, the channel access mechanism of lte enb is different than lte ue. This paper will concentrate also to describe the main functions of the most important network elements. Long term evolution protocol overview nxp semiconductors. 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. Qualcomm the corenetworkinabox is typically virtualized and is deployed on premises to ensure that traffic stays local to the site. Qualcomm the corenetworkinabox is typically virtualized and is deployed on. Lte architecture the architecture of lte is different from wifi. Dcs nideag metro network mplsethernet ipmpls csr core csr bsc msc mme pdsn sgw metrocellmicrocell nxt1e1, ds3, oc3. Key words long term evolution, lte, umts, hspa, flat architecture 1.
Additionally,the evolvedpacketdatagatewayepdgprovidessecurity. 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. 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. An adtran white paper 4glte mobile backhaul reference. Course contents historical vision lte capabilities system architecture 3. The combinational network represented below with its possible connectivity architecture.
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. 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. 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. Coexistence of lteu and wifi with direct communication. Umts network architectur e cn and an entities and procedures 3gpp ts 23. In addition, 5g nsa is expected to be less capitalintensive as compared to 5g sa architecture.
Network internet wag aaa lte wifi mobilitycentric future internet architecture lte wfia wifi wfia interface standard fia router fia distributed control plane integrated support for naming, authentication, mobility, etc. Lte architecture the infrastructure of an lte cellular network comprises the eutraeutran air interface and the evolved packet core epc, which includes the gateways, mobility management and subscriber databases. The evolved packet core communicates with packet data networks in the outside world such as the internet. 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. This architecture is defined as part of the system architecture evolution sae effort. The path to lte will include many improvements to network elements in existing mobile networks. 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 evolved packet core communicates with packet data networks in the outside world such as the. The downlink receiver chain of an lte modem is depicted in fig. Myung 2 beyond 3g international mobile telecommunications imt2000 introduced global standard for 3g. Synchronization distribution architectures for lte networks. C3 the lte core network evolved packet core introduction to saeepc core network evolution migration paths, data and voice epc architecture and interfaces interworking with legacy networks and non3gpp networks lte areas and identities the eps bearer quality of service qos charging mechanisms. 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.
Umts network architectur e cn and an entities and procedures. How can we compare the 4g network architecture to 5g. In this second part of 15 mins with 5g we will start looking at the 3gpp specifications for 5g network architecture and learn how to refer the specs. Physicalcommunication32010217244 219 table 1 lte,lteadvanced,andimtadvancedperformancetargetsfordownlinkdlanduplinkul. Architecture for localarea private lte networks source. Long term evolution lte is explicitly designed to deliver highspeed, high quality services to mobile subscribers. 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. It includes radio access, devices and core network. Read online 4g lte cellular technology network architecture and thank you totally much for downloading 4g lte cellular technology network architecture and. 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. In addition to lte, 3gpp is also defining ipbased, flat network architecture. The lte architecture at least comprises an enodeb, an mme, and an hss.
Introduction 3gpp longterm evolution lte is the 4th generation radio access technology which incorporates orthogonal frequency division multiple access ofdma as the multipleaccess scheme in downlink. Sprint has indicated that they will be following suit with lte as their 4g protocol. C3 the lte core network evolved packet core introduction to saeepc core network evolution migration paths, data and voice epc architecture and interfaces interworking with legacy networks and non3gpp networks lte areas and identities the eps bearer quality of service qos. Lte poses critical new challenges in complexity and, moving forward, mobile operators can no longer rely solely on vendors to validate performance under best case. Lte architecture and interfaces linkedin slideshare. Authoritative guide to advanced lte testing in todays fiercely competitive mobile market, operators worldwide need to rapidly roll out highquality differentiated services. Internetbased ip vpns offer attractive bandwidth pricing and can augment premium mpls offerings or replace mpls in some scenarios. A usim stores userspecific data very similar to 3g sim card. And in fact, wireless knowledge is essential when optimizing the service itself. Long term evolution lte is a 4g wireless broadband technology and is part of 3gpp gsm and 3gpp2 cdma open. The evolved umts terrestrial radio access network eutran.
The lte uplink and downlink can be in the same band or different bands. It also has a function for limiting the use of an lte terminal to only the lte subscriber based on the type of user terminal and lte subscriber profile. Lte provides a packet switched model at the sap, but retains a circuit switched model at the phy. White paper 4g lte enterprise network architectures using 4g lte maximizing the value of your wireless network what youll get. The long term evolution standard lte is a wireless communications, highspeed data standard for mobile phones and data terminals. Personal area network n internet and vehicle area network. So i decided to write a post which can be visuallize the details of overal lte networks with various different angle so that we can explicitely point of the points on which both parties focus. Alcatellucent solution for eutran sharing and key differentiators 14 3. Because this type of network architecture is agile enough to be moved without running more cabling, its possible to change direction without delay. Deploying an lte network of this scale involves a combination of wireless, infrastructure and networking experience. 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.
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