Institute of communications engineering national sun yatsen university. Lte is also referred to as eutra evolved umts terrestrial radio access or eutran evolved umts. Umts w cdma is one of the third generation wireless systems. Integration of intelligence at the access edgeas a greater variety of services and user types cross the mobile network, it is critical to have greater network and. Wcdma for umts radio access for third generation mobile communications third edition edited by harri holma and antti toskala both of nokia, finland.
Wcdma support asynchronous operation in which transmission from. Services umts most of 3g licenses in europe required operator to deploy. Wcdmahspa basics for umts kari aho project and business development manager kari. Umts uses wideband cdma wcdma as the radio transmission standard. The participants will become familiar with the features of the umts standard and why and how it evolved. It is a third generation network developed by ntt docomo and from 2g network cdma. Lte long term evolution or the eutran evolved universal terrestrial access network, introduced in 3gpp r8, is the access part of the evolved packet system eps. Technology overview universal mobile telecommunication system umts networks based on wideband code division multiple access wcdma have been deployed worldwide as 3rd generation mobile communications systems. Instant messaging people exchange a short set of information. The universal mobile telecommunications system umts as specified by the third generation partnership project 3gpp was formally adopted by the itu as a member of its family of imt2000 third generation mobile communication standards in november 1999.
Wcdma is one of two technologies that are being used to fulfill the radio access requirements of universal mobile telecommunications system umts. A short overview of the whole umts system and more detailed overview of utran are given, including essential network elements and the interfaces between them. Introduction to wcdma wideband code division multiple. Scribd is the worlds largest social reading and publishing site. The user equipment or ue is a major element of the overall 3g umts network architecture. Umts long term evolution lte technology introduction. Umts is designed to cope with the growing demand of mobile and internet applications with required quality of service parameters. Using this bandwidth it has the capacity to carry over 100 simultaneous voice calls, or it is able to carry data at speeds up to 2 mbps in its original format. Comprehesive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. It gives an overview of umts systems from the areas including its evolution, architecture, protocols and service capabilities. Uplink, downlink in the same frequency band and separated in time.
In view of the far greater number of applications and facilities that it can perform, the decision was made to call it a user equipment rather than a mobile. Spreading and scrambling transport channel combining soft handover compressed mode power control. Umts provides a clear evolutionary path to highspeed packet access hspa. W cdma wideband code division multiple access, umtsfdd, utrafdd, or imt2000 cdma direct spread is an air interface standard found in 3g mobile telecommunications networks. Gsm, gprs and umts overview general packet radio service. Multiple access ds cdma system in which user information bits are spread over a wide bandwidth by. The service aspects, architecture, protocols, and implementation strategies are all presented in a clear, concise format. Objectives are higher data rates, lower latency on the user plane and control plane and a packetoptimized radio access technology. You must know wcdma which stands for wide band code division multiple access. The technical details of the radio propagation channel are highlighted in order to point out the behavior of. Holma coedited the book wcdma for umts and completed his phd on umts performance at helsinki university of technology. Wcdma wide band code division multiple access umts before we talk about 4g or gsm.
Umts networks andreas mitschelethiel, jens muckenheim oct12 1 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. Lte is the successor technology not only of umts but also of cdma 2000. Multiple access dscdma system in which user information bits are spread over a wide bandwidth by. Wcdma radio access network wcdma network is deployed in umts a user equipment ue.
Oct 21, 2012 wideband code division multiple access wcdma is a thirdgeneration 3g standard that employs the directsequence code division multiple access dscdma channel access method and the frequencydivision duplexing fdd method to provide highspeed and highcapacity service. Imt2000 will provide a multitude of services, especially multimedia and highbitrate packet data. This book concentrates on analyzing how frequency division duplex fdd wcdma radio access technology should be. Gsm, gprs and umts overview free download as powerpoint presentation. Umts is an umbrella term for the third generation radio technologies developed within 3gpp. Umts tutorial pdf version quick guide resources job search discussion the universal mobile telecommunications system umts, based on the gsm standards, is a mobile cellular system of third generation that is maintained by 3gpp 3rd generation partnership project. The course covers the basics of 3g networks, the technologies involved, the architecture and the protocols involved. 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. Specification has been created in 3gpp the 3rd generation partnership project, which is the joint standardisation project of the standardisation bodies from europe, japan, korea, the usa and china. It also analyses the umts markets and presents umts vendors products and strategies as well as their recent activities in 3g. Network systems technologies, llc 2 wcdma ran architecture. The european community has mandated a harmonized standard, gsm, in the 2g bands, and has adopted wideband cdma wcdma in the. Umts overview david tipperdavid tipper associate professor graduate telecommunications and networking program university of pittsburgh 2700 slides 12 3g driving factors subscriber base continues to grow 1 billion wireless subscribers in 2002 surpassed landline telcom 2720 2 predict 3 billion by 2008 800 billion mobile revenues 2007. Pdf wcdma system standardization, interfaces and power control.
Umts universal mobile telephone service also called wcdma wideband cdma dominant standard outside of us and leading standard for 3g worldwide viewed as 3g migration path for gsmtdma systems cdma 2000 also called 3x and cdma three. Cdma, code division multiple access an implementation of direct sequence spread spectrum, dsss, and was used almost universally for 3g mobile communications standards as it provided an excellent format as a multiple access scheme. Umts terrestrial radio access network utran architecture new radio access network needed mainly due to new radio access technology core network cn is based on gsmgprs radio network controller rnc corresponds roughly to the base station controller bsc in gsm node b corresponds roughly to the base station in gsm term node. The wcdma technology provides the umts system some of the new functionalities on the air interface. It is the basis of japans ntt docomos foma service and the mostcommonly used member of the umts family and sometimes used as a synonym for umts. This, together with a thorough grounding of the wideband code division multiple access w cdma scheme used in umts, the structure of.
Umts terrestrial radio access network utran architecture new radio access network needed mainly due to new radio access technology core network cn is based on gsmgprs radio network controller rnc corresponds roughly to the base station controller bsc in gsm node b corresponds roughly to the base station in gsm term node b is a relic from the first 3gpp releases. Lucent technologies proprietary what is umts umts stands for universal mobile telecommunications system umts is a part of the international telecommunications unions imt2000 vision of a global family of thirdgeneration 3g mobile communications systems umts will play a key. Enables rapid and costeffective retrofitting the infrastructure of the umts technology 3g standard on lteadvanced is possible. Uplink, downlink in separate frequency bands tdd time division duplex. What is wideband code division multiple access wcdma. Introduction to wcdma wideband code division multiple access. Wcdmahspa basics for umts disclaimer trainer and company. The universal mobile telecommunications system umts is a third generation mobile cellular system for networks based on the gsm standard. Universal mobile telecommunications system umts is a 3g cellular telecommunication system. All incoming and outgoing cs connections go through gmsc. February, 28th 2005 overview in this document i make a study of third mobiles generation systems.
The universal mobile telecommunication system umts is a third generation 3g mobile communications system that provides a range of broadband services to. Gsm, gprs and umts overview general packet radio service gsm. Introduces the mobile communications sector and umts, including the evolution towards 4g systems, with an overview of the qos concept which is key for the definition of rrm. Network systems technologies, llc 3 wcdma radio access network wcdma network is deployed in umts a user equipment ue or terminal communicates with several nodebs. Comprehensive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. Umts overview david tipper associate professor graduate telecommunications and networking program university of pittsburgh 2720 slides 12 telcom 2720 2 umts etsi proposed gsmnatdma gprs evolution under name universal mobile telecom. At first i will center the study in the objectives and main characteristic of this generation. Evolution to umts wednesday, september 19, 2012 the nelson mandela african institute for science and technology 4 gsm gprs edge wcdma carrier spacing 200 khz multiple access tech. More specifically, the different aspects that are covered include. 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. Wideband code division multiple access cdma has emerged as the mainstream air interface solution for the thirdgeneration networks. Lte introduced to get higher data rates, 300mbps peak downlink and 75 mbps peak uplink. Pdf umts universal mobile telecommunication service is one of 3g third generation of.
This course offers a technical overview of umts, focusing on the umts air interface wcdma, radio network and core network. What is gsm, edge, gprs, umts 3g, hsdpa, hsupa, lte 4g. 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. Radio resource management strategies in umts wiley. Networks using the radio interface wcdma can be either synchronous or asynchronous. Wcdma based system all users share the same frequency time domain. Integration of intelligence at the access edgeas a greater variety of services and user types cross the mobile network, it is critical to have greater network and subscriber intelligence. Wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode. The umts world is an 3g mobile system news and information provider. Gsm wcdma hspa lte edge lte is the next step on the migration path to wireless broadband. Lucent technologies proprietary what is umts umts stands for universal mobile telecommunications system umts is a part of the international telecommunications unions imt2000 vision of a global family of thirdgeneration 3g mobile communications systems umts will play a key role in creating the.
Moreover, a code division multiple access cdmabased cellular concept and different major planning strategies of the utran are shortly presented. Umtsgprs system overview from an ip addressing perspective. A synchronous network can utilize the radio interface more ef. In europe, japan, korea, and the united states, wideband cdma systems are currently being standarized.
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