Cdma is the present and future of advanced wireless services. Nokia, siemens, ericsson, france telecom, csempro telecom. It has two duplex rxtx branches and supports cross connection of rx. The acquisition provides ericsson with leading cdma research and development, including the cdmaone and cdma2000 product lines that ericsson will further develop and market. Pdf wcdma system standardization, interfaces and power control. Like all other wireless base station equipment oems, ericsson offers a baseband unit bburemote radio unit rru bts architecture in additional to. The umts world is an 3g mobile system news and information provider. Ericsson lte now delivers gigabit speeds to more than ten markets worldwide, adding capacity and cutting timetocontent, for a network that keeps one step ahead of its customers. At that time, ims was thought to be solely intended for wireless communications. Gsm tutorial gsm is a globally accepted standard for digital cellular communications. Cdma has become successful in every aspect, and it has enabled improvements need to be gained over the previous technologies used in 2g systems. To much noise will cause interference leading to degraded service or dropped calls.
Ericssons cdma2000 ran is internet enablers uniquely positioned to provide a plugand several new nodes or node enhancements play wireless system that can connect to a will be available to ericssons cdma cus variety of switching platforms, including tomers, enabling them to offer advanced switches from alcatel, nortel and lucent. It was the combination of these two network elements that provided the basis for the 3g umts network architecture. Cdma network architecture consists of following elements mobile station ms. Logically, the cn is divided into the cs circuit switched domain and the ps.
Gsm architecture, mobility management, network signaling. The stated plan was to build on an evolved gprs core network and wcdma and edge air interfaces. Multicarrier cdma in which symbols are spread over large vectors most of whose elements are zero sparse. Harmonization of wcdma and cdma2000 ericssons acquision of qualcomms infrastructure division. Ericsson wcdma bburru system free download as pdf file. In addition to lte, 3gpp is also defining ipbased, flat network architecture. Home location register hlr visitor location register vlr equipment identity register eir authentication center auc sms serving center smssc gateway msc gmsc chargeback center cbc. Ericsson gsm architecture pdf free download as pdf file. Ericsson wcdma bburru system ericsson manufactured goods. An overview of cdma evolution toward wideband cdma ecently, extensive investigations have been carried out into the application of a code division multiple access cdma system as an air interface multiple access scheme for imt2000umts international mobile telecommunications system 2000universal mobile telecommunications system. Examples of wcdmaspecific functions are fast power control and soft handover.
Sep 01, 2015 ericsson rbs6000 digital units asics report. Gsm uses narrowband time division multiple access tdma for providing voice and text based services over mobile phone networks. These two technologies differ in the way calls and data travel over the mobile phone networks. Ericsson and qualcomm reach global cdma resolution. Wcdma a brief overview by ericsson authorstream presentation. Bt, rogers cantel, ericsson, lucent, nokia, nortel networks, telenor tim and others banded together to bring an allip network to umts systems. Tarmo anttalainen, introduction to telecommunications, network engineering, 2nd edition, artech house, 2003. Ericsson bsc architecture pdf free download as pdf file.
This paper describes a wideband code division multiple access test system developed by nokia. 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. Qualcomms terrestrial cdma wireless infrastructure research and development and manufacturing division comprises infrastructure for cellular, pcs and wireless local loop. The bts transmits and receives radio signals, realizing communication between the radio system and the mobile station. Pdf the global system for mobile communication gsm is now worldwideaccepted standard for digital cellular. Most value added services are already common to gsm and umts itubdt regional seminar on broadband wireless. Ericsson gm 12 ericsson gm 22 cdericsson gm 22 an305 bmr4642002 an312 an310 2dt2 bmr4640002 text. Oct 21, 2012 wideband code division multiple access wcdma is a thirdgeneration 3g standard that employs the directsequence code division multiple access ds cdma channel access method and the frequencydivision duplexing fdd method to provide highspeed and highcapacity service. First, the lte network reference model is defined and its basic evolved packet system eps entities and the functions of each entity are described. The ericsson rbs 6000 bts system supports gsmedge, w cdma hspa, lte, and cdma in a single unit. Umtstdd is a mobile standard built upon the umts 3g standard, using a.
References roger l freeman, fundamentals of telecommunications, 2nd edition, wiley 2005. The radio access network changed considerably as a completely new radio interface was used based around the use of cdma. Pdf architecture of gprs and its capability comparison with hsdpa. Telecommunications network and service architectures. 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. Ericsson is shaping the future of mobile broadband internet communications through its continuous technology leadership, helping to create the most powerful communication companies in the world.
It has an open, distributed architecture the separation of switching and service control functions full use of ss7 as the signaling infrastructure its clearly defined and specified interfaces the nature of its in structure general packet radio service gprs and enhanced data rates for global evolution edge cdma, are 3g gsm. Multiple users occupying the same band by having different codes is known as cdma code division multiple access system let w spread bandwidth in hz r 1tb date rate s received power of the desired signal in w j received power for undesired signals like multiple access users, multipath. The protocols used in the air interface, from the viewpoint of the mobile. Ordinary umts is implemented with wcdma wideband code division multiple access technology. Wcdma system standardization, interfaces and power control.
Cdma is the present and future of advanced wireless services code division multiple access cdma is a spread spectrum technology used in second and third generation wireless networks cdmaone identifies 2g and 2. Ordinary umts is implemented with wcdma wideband code division multiple access technology and frequency division duplexing fdd the term wcdma also refers to one of the itus imt2000 standards, a type of 3g cellular network. Audience this tutorial has been designed for readers who want to understand the basics of gsm in very simple terms. This will migrate to an architecture where the core network is. This standard, used largely in north america, japan and mainland asia, was a rival to gsm, and ericsson had a global market share of 25%, but the overall volumes were too low so ericsson wound down its cdma commitment, ending it completely by 2006. Wcdma including the ran radio access network and the cn core network. Pdf availability analysis of gsm network systems researchgate. 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. Difference between gsm and cdma the worlds renowned mobile phone network technologies are gsm global system for mobile communication and cdma code division multiple access. This document provides a brief overview of the lte network architecture as the first technical document of lte area. This will migrate to an architecture where the core network is common to gsm and umts radio accesses. Is interim standard 95 cdmaone network architecture.
Mobile cellular network architecture ericsson radio systems, 1998. Seals that has been implemented by ericsson shall not be broken or. The additional components of the gsm architecture comprise of databases and messaging systems functions. Given below is a simple pictorial view of the gsm architecture. The network architecture is designed to deliver internet and advanced services seamlessly, and. The mobile switches of a gsm network may also be replaced by an ngn architecture which is called r4 architecture. Cdma technology has been used in 3g telecommunication systems in one form or the other. Ericsson wcdma bburru system ericsson manufactured. Wcdma is a wideband directsequence code division multiple access dscdma system user information bits are spread over a wide bandwidth by multiplying user data with quasirandom bits called chips derived from cdma spreading codes. What is wideband code division multiple access wcdma.
Like all other wireless base station equipment oems, ericsson offers a baseband unit bburemote radio unit rru bts architecture in additional to traditional macrocell bts cabinets. Lucent technologies proprietary 29 w cdma physical layer processing channel separation uses ovsf codes ovsf is applied to achieve 3. In second and third generation wireless communication a. A wideband cdma proposal has been developed within etri, which forms the basis for the tta i scheme.
Cdma architecture cell breathing cdma is a noisegenerated technology. Seals that has been implemented by ericsson shall not be broken or removed, as it otherwise will void warranty. The additional of packet data with gprs required additional network entities to be added. Gsm and cdma spectrum frequencies the cdma network operates in the frequency spectrum of cdma 850 mhz and 1900 mhz while the gsm network operates in the frequency spectrum of gsm 850 mhz and 1900 mhz. Pdf the global system for mobile communication gsm is now worldwide accepted standard for digital cellular. The ericsson rbs 6000 bts system supports gsmedge, wcdmahspa, lte, and cdma in a single unit. Rnc3810ericssons first wcdma radio network controller. Apr 05, 2010 ericssons cdma2000 ran is internet enablers uniquely positioned to provide a plugand several new nodes or node enhancements play wireless system that can connect to a will be available to ericssons cdma cus variety of switching platforms, including tomers, enabling them to offer advanced switches from alcatel, nortel and lucent. At each subcarriers, the number of interferers is small codes can even be randomly chosen input and the output are multibit symbols and complex numbers. Gsm wcdma or cdma, major services and functions are included. The ms is the mobile subscriber equipment, which can originate and receive calls and communicate with the bts.
Ericsson ab reserves the right to change the contents of, restart. Basics idea about cdma technology and its applications. Pdf wcdma system standardization, interfaces and power. Delivering on 3g cdma development group cdma worldwide. During the cutbacks, ericsson had reduced its cdma organization. Comprehensive coverage of umts 3g news, licensing, business developments, 3g wcdma telecommunication technology, multi media mobile phones and future communications. Taking advantage of such assets, it has developed at an early date small and lightweight outdoor lte infrastructure equipment enodeb, which is flexible in terms of where it can be installed. As such the system must monitor its noise floor or ambient noise. Cups introduces a split architecture and new interfaces for both the spgw in.
Wcdma is a wideband directsequence code division multiple access ds cdma system user information bits are spread over a wide bandwidth by multiplying user data with quasirandom bits called chips derived from cdma spreading codes. Exemptions in the rohs directive utilized in ericsson power modules products are, printing errors or for any consequences thereof. Lucent technologies proprietary 29 wcdma physical layer processing channel separation uses ovsf codes ovsf is applied to achieve 3. Ericsson bsc architecture pdf ericsson network architecture. This is done in gsm via gaussian minimum shift keying gmsk. Cdmaone covers larger areas and consumes less power than the other figure describes the cdmaone architecture, with its corresponding interfaces. With this continued strong evolution lte steadily paves the way for 5g while reusing the installed base. Rnc and bsc at first glance the architecture of the gsm. Umts requirements multimedia service requirements high data rates at least 384 kbps widearea coverage up to 2 mbps indoor and lowrange outdoor coverage high service flexibility packet and circuitoriented services wide range of bit rates with high granularity multiple services on one. Cdma systems are equipment with a protocol that allows the system to adjust in these situations. Umts requirements multimedia service requirements high data rates at least 384 kbps widearea coverage up to 2 mbps indoor and lowrange outdoor coverage high service flexibility packet and circuitoriented services wide range of bit rates with high granularity.