This allowed for a better full service for cell phone users wishing to access the. Radio access network architecture wcdma for umts wiley. The more general term evolved radio access network eran, can also be used as part of signaling protocols, as the term access stratum as can be used. The gsm base station subsystem bss and the wcdma radio access network ran are both connected to the gsm core network for providing a radio connection to the handset. Umts network architecture basic configuration, release 3 bss bsc rns rnc cn node b node b a iups iur iub uu msc sgsn gs gmsc ggsn hlr gn gr gc c d e auc h eir f gf pstn gi gb iucs vlr b gp. The comparison reveals that eutran consists of one type of nodes, namely evolved node b enodeb, and the variety of interconnections is. Wcdma wideband code division multiple access and lte long term evolution are mobile communication technologies that falls under the 3rd generation partnership project 3gpp releases. Tinnirello iub bs rnc new ran architecture iurinterface is. Introduction 3g is the third generation of mobile phone 2 3 standards and technology and represents one of the biggest opportunities the business world has ever seen, increasing the potential of mobile internet and opening up new revenue streams. Wcdma including the ran radio access network and the cn core network. As shown in the figure there are three main components in umts network architecture, user equipments is composed of mobile equipment me and usim.
Easily clear job interviews and college exams after studying these multiple choice questions mcqs. Logically, the cn is divided into the cs circuit switched domain and the ps packet switched. In 3g, mobile phones became mobile devices combining. The umts architecture takes advantage of the existing gsm and gprs networks which serve as a core network in umts infrastructure. Easily clear job interviews and college exams after studying these multiple choice. Wcdma has the capacity to easily handle bandwidthintensive applications such as video, data, and image transmission necessary for mobile internet services. When a unit is about to leave one cell area and travel to another it seeks out the strongest cell signal it can find. When the 3g was introduced, cell phone users were finally able to talk and access data at the same time and with higher data rates.
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. Radio resource management in 3g umts networks diva. The third generation 3g proposal for cellular communications claims to provide global. The advantage is one core network supporting multiple access technologies. Core network is composed of circuit switched and packet switched functional modules. The open architecture of the wcdma core network wideband code division multiple access wcdma is a 3rd generation mobile.
The user equipment or ue is a major element of the overall 3g umts network architecture. The network architecture can be divided into subsystems based on the nature of traffic, protocol structures, physical elements. The umts standard consists of roughly 300 specification documents, so this book. The first trend was the shift towards an allip umts. The first trend was the shift towards an all ip umts. Most of 3g licenses in europe required operator to deploy. Architecture elements, data flow power control fast, slow. Umts standard is generally preferred by countries that use gsm network. A umts network may work on wcdma, cdma2000 and tdscdma implementations. Wcdma vs gsm wcdma wideband code division multiplexing access and gsm are two technologies that are used in mobile telecommunications. Initial 3g umts network architecture includes both.
This design not only provides size and power benefits, but. Wcdmahspa basics for umts kari aho project and business development manager kari. The difference between these two is that gsm is a 2g technology and wcdma is a part of the newer 3g group of technologies. What is wideband code division multiple access wcdma. 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. A high speed 3g mobile wireless technology with capacity to offer higher data rate than cdma. You must know wcdma which stands for wide band code division multiple access.
Wcdma was adopted as a standard by the international mobile telecommunications. 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. W cdma the radio technology of umts is a part of the itu imt2000 family of 3g standards. Both the ue and the utran are composed of different layers. Comparision of 3g wireless networks and 4g wireless networks. Study these interview mcq questions and answers on 3g umts wcdma network architecture and interfaces. It is assigned to a single user and contains all the functions needed to access umts services. The umts world is an 3g mobile system news and information provider. Fundamentals of 3g basics of wcdma for umts magister. The ue is the mobile phone and the utran is the base station and the network intelligence.
Difference between wcdma and lte compare the difference. Request pdf an introduction to 3g core network architecture. Umts works on wcdma, cdma2000 and tdscdma implementations by 3gpp. The european community has mandated a harmonized standard, gsm, in the 2g bands, and has adopted wideband cdma wcdma in the 3g. Liu and morten damgaard broadcom corporation i n 3gwcdma mobile handsets, the direct conversion receiver dcr architecture is commonly used due to its simplicity and low cost, where interstage filters are completely eliminated. It is a third generation network developed by ntt docomo and from 2g network cdma.
You can easily clear job interviews and college exams after taking this test. Umts network architectur e cn and an entities and procedures 3gpp ts 23. The umts consists of logical network elements that each has a defined functionality. Being newer and more advanced, wcdma is now the technology that people want and it is slowly being deployed in a lot of. Wcdma wideband code division multiple access, an itu standard derived from code division multiple access cdma is officially known as imt2000 direct spread. A study on third generation mobile technology 3g and. Wcdma system overview ran architecture the main purpose of the wcdma radio access network is to provide a connection between the handset and the core network and to isolate all the radio issues from the core network. An efficient, highperformance dsp architecture for wcdma. However it is essentially the handset in the broadest. Origins, architecture and the standard springerlink. Comprehensive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. Umts system architecture and protocol architecture overview on overall system architecture umts network architecture and elements mobile station. Also, know about frequency bands used in 3g networks.
The mobile phone and subscriber identity module, the umts radio access network and, supporting voice with. An overview of the 3g network lunds tekniska hogskola. This communications network, commonly referred to as 3g for 3rd generation wireless mobile communication technology, can carry many traffic. Security architecture in umts third generation cellular networks. Umts overview and learn some important concept about umts architecture. Lte standards are part of the latest 3gpp releases, which are considered as 4th generation 4g, and wcdma is the older technology which was specified as 3rd. Wcdma was chosen as 3g technology in late 1997early 1998 by.
Cellular networks, 3g, umts, security architecture, aka, kasumi. Both frequency division duplex fdd and time division duplex tdd variants are supported. Wcdma and lte femto standard defined in 3gpp starting with r8 ranbased architecture with standard interface between henb and henbgw iuh for wcdma 3g ts 25. Pdf mobile network planing process case study 3g network.
Gsm wcdma hspa lte edge lte is the next step on the migration path to wireless broadband. 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. 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. This is based on a set of standards used for mobile devices and mobile telecommunications use services and networks that comply with the international mobile telecommunications2000 imt2000 specifications by.
Fundamentals of 3g basics of wcdma for umts duration. Cdma architecture soft handoff hard handoff are defined as the milliseconds in which a mobile unit is passed from one cell to the other and there is no connection. Comparision of 3g wireless networks and 4g wireless. Umts network is called a third generation network 3g. 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. The umts network was based on that used for 2g, although major changes were seen to some terminology and to the radio. Ip2 and ip3 nonlinearity specifications for 3gwcdma. The evolution of cellular technologies from offering only voice services to enabling mobile data services took a major milestone after the introduction of third generation 3g networks. User equipment the 3g system consists of two main parts. Umts uses wideband cdma wcdma as the radio transmission standard. Wcdma is a third generation mobile wireless technology offering much higher data speeds to mobile and portable wireless devices than commonly offered in todays market. 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. Difference between wcdma and gsm difference between. Wcdma wideband cdma dominant standard outside of us and leading standard for 3g.
723 1427 201 1600 12 613 180 314 747 113 836 77 367 889 751 1327 1565 1343 1386 518 1298 1498 430 135 435 70 337 390 527 1197 578 639 1204 192 61 105 939 1335 865 1041 355 450