The difference between these two is that gsm is a 2g technology and wcdma is a part of the newer 3g group of technologies. Being newer and more advanced, wcdma is now the technology that people want and it is slowly being deployed in a lot of. The rnc handles protocol exchanges between iu, iur and iub interfaces the. New air radio interface based on wcdma access technology 3gpp 3gpp relrel. The radio network subsystem is also known as the umts radio access network or utran. Explain umts network architecture in detail with interface. At the end of the course you will understand wcdma based 3g umts network components like ue, node b, rnc, cs, ps, msc, sgsn, ggsn, pdn and interfaces, you will have clarity on the 3g architecture. Wcdma open loop power control in wcdma attempt to make a rough estimation of path loss by measuring downlink beacon signal problem far too inaccurate fast fading is essentially uncorrelated between uplink and downlink due to large frequency separation of uplink and downlink band of wcdma fdd mode. Study these interview mcq questions and answers on 3g umts cdma2000 cdma network architecture and interfaces. Difference between wcdma and lte compare the difference. Utran umts terrestrial radio access network handles all. Nov 20, 2015 at the end of the course you will understand wcdma based 3g umts network components like ue, node b, rnc, cs, ps, msc, sgsn, ggsn, pdn and interfaces, you will have clarity on the 3g architecture.
Within an lte network, lte interfaces connect the various components to or within the core. Efort lumts universal mobile telecommunications system designe une. This presentation discusses about the wcdma air interface used in 3g i. Course contents historical vision lte capabilities system architecture 3. Universal mobile telecommunication system umts is actually the. Utran interfaces are the most important point to start learning about the whole system.
The introduction and development of solution like skype is highly significant v. Umts channels logical,transport,physical umts channels. In this tutorial you can learn the following topics. The utran provides the air interface access method for user equipment. This is the section of the 3g umts wcdma network that interfaces to both the ue and the core network. The core network is then the overall entity that interfaces to external networks including the public phone network and other cellular telecommunications networks.
The standards promise an allip core network with a simplified and flattened architecture that supports higher throughput, lower latency, as well as. Full 3g fundamentals 3g architecture training course. This page on umts tutorial covers umts network architecture. Umts network is called a third generation network 3g. Radio access network architecture wcdma for umts wiley. Being wider than its competition cdma2000 which only used a 1. Wcdma air interface course gives the detailed description of the wcdma fdd technology and its use in the umts network. If you like my videos,then plz like and subscribe channel. Difference between wcdma and gsm difference between. The training focuses on physical layer operation and procedures and other functions closely related with the physical layer. Other interfaces include iub between the rnc and the node b and iur between rncs in the same network. Coexisted with wcdma and gsm ho from lte to gsm 500msec for nrt and 300 for rt and the same for gsm. Within an lte network, lte interfaces connect the various components to or within the core interfaces allow the mme, sgw and pgw to cooperate with other network elements e.
Transport channels, logical channels, radio bearers. 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. Wideband code division multiple access, along with umtsfdd, utrafdd, or imt2000 cdma direct spread is an air interface standard found in 3g mobile telecommunications networks. This tutorial on umts covers umts logical channels, transport channels and physical channels. It inherits the basic functional elements from the gsm architecture on the core network cn side.
The basic core network architecture for umts is based on gsm network with gprs. B interface is defined as the inner interface between a visitor location register vlr and a mobile switching center msc and used for a mobile switching center msc to inquire the vlr of related information of the current location of a mobile station ms or inform the vlr of related location update information of an ms. A knowledge of the structure and usage of the physical channels in the downlink and uplink directions, together with a knowledge of spreading and modulation, provides a good background for understanding how the wcdma radio network works. This radio interface has great capability on which third generation of mobile communication is built, with backward compatibility. A interface is defined as the communication interface between network subsystem nss and base station subsystem bss. Umts network is called a third generation network3g. Wcdma including the ran radio access network and the cn core network. Umts network architecture ran corenetwork ue umts tutorial. The equivalent interface in gsmgprs networks is the um interface.
The mobile phone and subscriber identity module, the umts radio access network and, supporting voice with. This page on umts vs lte describes difference between umts and lte systems. It supports conventional cellular voice, text and mms services, but can also carry data at high speeds, allowing mobile operators to deliver higher. The successful trial, deployment, operation and troubleshooting of 3g or umts infrastructures and applications is the. The umts architecture takes advantage of the existing gsm and gprs networks which serve as a core network in umts infrastructure.
Wcdma was specified in the 3gpp release 99 and 4 of the specification, while lte was specified in the 3gpp release 8 and 9. A umts system can be divided into a set of domains and the reference points that interconnect them. Study these interview mcq questions and answers on 3g umts wcdma network architecture and interfaces. Long term evolution lte tutorials lte video tutorial. The greatest changes are related to the access part of the network. This chapter gives a wide overview of the universal mobile telephone system umts architecture, including an introduction to the logical network elements and the interfaces. The paper introduces control plane and user plane architecture. A umts network may work on wcdma, cdma2000 and tdscdma implementations.
A 3g mobile network offers good download and upload speeds. The training presents functionality related with the use of r99 dedicated channels, as well as, hspa. A key epc goal is to enhance service provisioning while simplifying interworking with non3gpp mobile networks. An overview of the 3g network umts can in many aspects be looked upon as an extension to gsm and gprs.
Comprehensive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. As they tranverse between layers they map to other layer frames. The radio network controller rnc is a governing element in the umts radio access network and is responsible for controlling the node bs that are connected to it. Unlike wcdma, lte supports variable bandwidth from 1. The ran is used to process all the radiorelated functions, while the cn is used to process all voice calls and data connections within the umts system, and implements the function of external network switching and routing. The ms is the mobile subscriber equipment, which can originate and receive calls and communicate with the bts. Gprs network in 3g is similar to that of the 2g gsm network. This paper provides a short, but comprehensive, overview of the lte network architecture and interfaces.
Umts combines three different terrestrial air interfaces, gsms mobile application part map core. There are four interfaces connecting the utran internally or externally to other functional entities. Umts system architecture umts subscriber identity module usim. Understanding the wcdma radio interface is essential for engineers dealing with umts radio networks. The access network, called umts terrestial radio network utran, consists of base stations and base stations controllers. This type of sim card mobility is analogous to terminal mobility, but provides a personalmobilitylike service within the gsm mobile network refer to chapter 11 for more details. The user equipment or ue is a major element of the overall 3g umts network architecture. Gsm won the world, being more flexible and cheap open standard 3g added internet. You can easily clear job interviews and college exams after taking this test.
Cn core network is responsible for transport functions such as switching and routing calls and data, tracking users usim me. It includes various interfaces such as uu,lub,lur,lucs and lups between ue,nodeb,rnc,msc and sgsn. May 07, 2014 this presentation discusses about the wcdma air interface used in 3g i. Umts makes use of wcdma, a technology that shares much with cdma networks used throughout the world, though it is not compatible with them. Radio access networkran,core networkcn and user equipmentue. I will continue, making a small analisi of thecdma2000 system, i coment a. This completely revised and updated edition of the highly successful umts signaling provides a deep insight into all aspects of umts signalling. Umts signaling umts interfaces, protocols, message.
Take this free onlinetest or quiz or trivia on the 3g umts mobile network architecture and interfaces. Aug 11, 2009 utran interfaces are the most important point to start learning about the whole system. Umts uses a wideband version of cdma occupying a 5 mhz wide channel. In terms of system function entities, a interface is the interconnection interface between mobile switching center msc and base station controller bsc and the physical link is implemented by means of a standard 2. The prin ciple architecture of a umts network, generally referred to as public. Wcdma wideband cdma this is the multiple access technology being specified for umts radio access interface allowing subscribers to achieve more secured communication facility with much higher data rates. Both the systems are used for cellular mobile communications. Umts signaling umts interfaces, protocols, message flows, and. Difference between umts and wcdma network technology. The network architecture can be divided into subsystems based on the nature. Radio protocols medium access control mac protocol. The interface between the rnc and the circuit switched core network cscn is called iucs and between the rnc and the packet switched core network is called iups. Fa to home agent interface ph interface complete cdma protocol analysis visit cdma protocol analyzer page.
Umts system architecture ue user equipment that interfaces with the user utran umts terrestrial radio access network handles all radio related functionality wcdma is radio interface standard here. Access node to authentication, authorization accounting interface a12 interface complete cdma protocol analysis visit cdma protocol analyzer page. An ms has a number of identities including the international mobile. Third edition edited by harri holma and antti toskala both of nokia, finland. The umts consists of logical network elements that each has a defined functionality. Interfaces allow the mme, sgw and pgw to cooperate with other network elements e. The radio access network changed considerably as a completely new radio interface was used based around the use of cdma. Tinnirello 1 table per terminal with peertopeer update between terminals as it alters the notion of telecommunications operators by. This keeps information about the users phone number, home network identity and security keys etc. The iuis split functionally into two logical interfaces, iupsconnecting the packet switched domain to the access network and the iucsconnecting the circuit switched domain to the access network. Umts system and air interface architecture researchgate. Each one of them is built in a standard way described by. If you continue browsing the site, you agree to the use of cookies on this website.
Base level umts networks are generally capable of downlink speeds as 384 kbps. The epc is the latest evolution of the 3gpp core network architecture. Umts interfaces protocols on different interfaces standard numbers and links to the different standards. Umts works on wcdma, cdma2000 and tdscdma implementations by 3gpp. The highlevel network architecture of lte is comprised of following three main components. Tinnirello iub bs rnc new ran architecture iurinterface is available for soft handover, bsc rnc. Umts signaling umts interfaces, protocols, message flows, and procedures analyzed and explained. Currently, wcdma networks are deployed in umts band of around 2 ghz in europe and asia, including japan and america korea. Base station is referred as nodeb and control equipment for nodebs is called radio network controller rnc. A usim stores userspecific data very similar to 3g sim card. Home location register to packet data serving node, mscvlr is41 interface. Cdma network architecture consists of following elements mobile station ms. Comprehesive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications.
All equipment has to be modified for umts operation and services. Wcdma vs gsm wcdma wideband code division multiplexing access and gsm are two technologies that are used in mobile telecommunications. As shown in the figure, there are three types of umts channels viz. The cn provides circuit switched cs functions as well as packet switched ps functions. Network architecture the air interface modes of operation spectrum allocations wcdma and the spreading concept cell isolation mechanism and scrambling. The chapter structure has been reworked for improved usability for readers, as well as including many new features and updates.
At the end of 2005, there were 100 wcdma networks open and a total of more than 150 operators with licenses for frequencies wcdma operation. 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. This name was often used to refer to the whole system. It supports conventional cellular voice, text and mms services, but can also carry data at high speeds, allowing mobile operators to deliver higher bandwidth applications including streaming and broadband. Ggsn, pdn and interfaces, you will have clarity on the 3g architecture diagram. The umts world is an 3g mobile system news and information provider. The bts transmits and receives radio signals, realizing communication between the radio system and the mobile station. When the data rates are compared, lte provides massive downlink and uplink speeds than wcdma. The rnc carries out radio resource management, some of the mobility management functions and is the point where encryption is done before user data is sent to and from the mobile. Lte procedures on s1 and x2 interfaces are described in detail. The umts network architecture is partly based on existing 2g network components and some new 3g network components. It supports conventional cellular voice, text and mms services, but can also carry data at high speeds, allowing mobile operators to deliver higher bandwidth applications including streaming and broadband internet access.
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