Gsm supports transmitting data and voice both at once, but cdma have not this feature. Pdf wise arrangement of antennas is critical in wireless cellular systems for both. Cellular network organization use multiple lowpower transmitters 100 w or less. When deploying a 3g network, it is important to consider the implication on the networks 4g strategy. Gsm and cdma are competing wireless technologies with gsm enjoying about an 82% market share globally. Cdma 2000 1x architecture and feature computer network. The architecture of the cdma mobile system cms is developed based on three function groups. Cellular networks northeastern university college of. With the evolution towards ipbased network, the circuit switched network is migrating towards a new architecture called next generation network ngn which emulates the behavior of circuit switching. The chapter discusses gsm frequency bands, the gsm public land mobile network plmn and its objectives and services, gsm architecture and gsm subsystem entities, interfaces, and protocols between gsm. We show that there is a capacity limit for a cdma system, which for a.
With private network, customers can deliver missioncritical information easily to their mobile workforces. Rnc radio network controller equivalent to gsm bsc responsible for radio resource management and control of the node bs. Base level umts networks are generally capable of downlink speeds as 384 kbps. Network management applications terminals figure 3 total cdma solution. Gsm architecture, mobility management, network signaling.
Cdma codedivision multiple access refers to any of several protocols used in secondgeneration 2g and thirdgeneration 3g wireless communications. Code division multiple access cdma is a digital cellular technology used for mobile communication. Sprints better buildings network efficiency strategy. Codedivision multiple access cdma is a channel access method used by various radio communication technologies. This video shows the detailed information about how the cellular network works in 2g. The cdma2000 standard is thirdgeneration 3g mobile wireless technology. Rates for global evolution edge cdma, are 3g gsm based standards. As noted in figure 4, the 1xcs iws is an addition to. Pdf a new approach for wireless cellular network design. We have discussed the key architecture elements to enable wlan cdma services.
Cdma network architecture consists of following elements. Multicode cdma in multicode cdma systems each user can be provided with multiple spreading codes of. By standard the gsm network is divided into four 4 subsystems 1. The umts architecture takes advantage of the existing gsm and gprs networks which serve as a core network in umts infrastructure. A mobile station in a form of a handset, pda, or pcmcia card in handheldportable computer supporting simple ip or mobile ip client or both. Whereas only mobile phones from a set of whitelisted companies can be used with a cdma network. In a cdma network, that includes the ability to support an hrpd serving gateway hsgw for evolved hrpd ehrpd networks.
These two technologies differ in the way calls and data travel over the mobile phone networks. The architecture of the cdma mobile sys tem cms is. The variable length packets are used for transmission. Global system for mobile communication technology mobile device investigations program technical operations division. If you are looking for answer to specific questions, you can search them here. In this paper, a novel architecture for antenna arrangement in cdma wireless cellular systems.
Cdmaarchitecture radio resource management networks. 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 benefits of cloudran architecture in mobile network. Wcdma is based on cdma and is the technology used in umts. The cisco digital network architecture vision an overview. Data rate in 4g system will range from 20 to 100 mbps. Cdma20001x radio access network ran packet control function pcf. The additional of packet data with gprs required additional network entities to be added. Code division multiple access or cdma has its roots in wwii era spread spectrum technology. Verizon wireless private network verizon wireless private network was created to enable verizon 3g and 4g lte wireless devices to send and receive data to and from the customers ip network, without traversing the public internet. In this paper we present an analysis of the cdma 2000 performance with mobile clients. Does not differentiate the userto network interface from the network to network interface unlike bicc and h. The architecture of cdma2000 data system is based on the following components as shown in figure 4.
Study these interview mcq questions and answers on 3g umts cdma2000 cdma network architecture and interfaces. Code division multiple access cdma principle of cdma. Short for wideband cdma codedivision multiple access, a 3g technology that increases data transmission rates in gsm systems by using the cdma air interface instead of tdma. Gsm stands for global system for mobile communication, while cdma stands for code division multiple access gsm uses fdma frequency division multiple access and tdma time division multiple access. The cdma mobile system architecture shin 1997 etri. Conceptual network model structural network model resource management architecture umts service and bearer architecture. Network architecture based on the dualstack solution. The base station architecture is based on a universal platform that can support cdma and other cellular standards such as amps and tdma in the same base. Cdma 2000 1x architecture and feature free download as powerpoint presentation. A design of the codedivision multiple access cdma cellular system architecture is presented.
The benefits of cloudran architecture in mobile network expansion architectures that favor efficient operation, lower power consumption, agile traffic management and high. Please update this article to reflect recent events or newly available information. Pdf a cdma network architecture using optimized sectoring. What is umts network architecture radio access radio interface frequency bands umts cdma modulation data channels umts tdd tdsdcdma handover. Pdf mobile positioning in cellular networks will provide several services. Overthe network device management public service aspects lawful intercept. The network architecture can be divided into subsystems based on the nature of traffic, protocol structures, physical elements. Mdpbased fast handoff with reducing waste rate method for management radio resource in 3gpp cellula. In order that the gsm system operates together as a complete system, the overall network architecture brings together a series of data network identities, each with several elements. In second and third generation wireless communication a. An overview of cdma2000 technology conceptsan overview of cdma2000 technology concepts 1 1 1 1 1 1 1 1 1 1.
Easily clear job interviews and college exams after studying these multiple choice. Cdma cellular systems are deemed superior to fdma and tdma, which is why cdma plays a critical role in building efficient, robust, and secure radio communication systems. Wireless course gsm network architecture, channelisation, signalling and call processing dr bhaskar ramamurthi. The mobile station interacts with the access network to. Starents pdsnfa and ha seamlessly deliver enhanced voice. Cdma, umtshspa, lte, ltea, and wifi standards are lowpower mini base stations that cover a range of 10.
Evolutionary analysis of gsm, umts and lte mobile network. Generic functional architecture management transport adaptation transport transport resource policy control function tmgf sgf. Note that, this article does not aim to collect all cdma2000 3g networks from around the world, but intends to focus on notable deployments. This allows several users to share a band of frequencies see bandwidth. Umts works on wcdma, cdma2000 and tdscdma implementations by 3gpp. In this paper we present an analysis of the cdma 2000.
Contents o cellular communication multiple access method cdma introduction o cdma network architecture o call processing in cdma network 3. The architecture of lte network and working principle. Gsm network architecture, channelisation, signalling and. The main distinction between gsm and cdma is that in gsm, the customer information is put on a sim card which can be moved to a new mobile phone. Cellular network organization use multiple lowpower transmitters 100 w or less areas divided into cells oeach served by its own antenna oserved by base station consisting of transmitter, receiver, and control unit oband of frequencies allocated ocells set up such that antennas of all neighbors are equidistant hexagonal pattern. The umts terrestrial radio access network utran consists in bs node the 3g term for bts and radio network controllers rncs connected by atm network. Wcdma was adopted as a standard by the itu under the name imt2000 direct spread. With highdensity networks, interference management and. We propose a network architecture for codedivision multipleaccess cdma cellular systems based on adaptive sector coverage.
Cdmaarchitecture free download as powerpoint presentation. The mo bile assisted handoff and the network assisted. Pdf architectural design of a code division multiple. Introduction code division multiple access technology emerged as an alternative to the gsm cellular architecture and has shared in the past decades explosive growth in the wireless market. Pdf version quick guide resources job search discussion. W cdma and cdma 2000 are two major proposals for 3g system w cdma does not need base station timing synchronization whereas base station timing synchronization in cdma 2000 can provide decreased latency and a. In this paper, the cms architecture is discussed from the point of view of implementing these functions. Page 2 pdsn, packet core connectivity for cdma networks starent networks, corp. The cdma based 3g standards selected from numerous proposals to itu have become the major stream for imt 2000. So here this is a birds eye view of the gsm network architecture so you have the base stations subsystem. Every call passes through set of equipments to reach the destination.
The rnc, node b and ms together are called the serving radio network system srns. Management, and supplementary services aspects are managed according to the respective network protocols. Qualcomm technologies circuitswitched fallback to 1x voice. Mar 09, 2014 contents o cellular communication multiple access method cdma introduction o cdma network architecture o call processing in cdma network 3. Cellular access methods power frequency time fdma frequency power time tdma frequency cdma power. Code division multiple access cdma is a channel access method normally used by 3g radio communication technology as well as in some other technologies. In lte architecture, evolved utran eutran is an important role which is the air interface of lte upgrade path for mobile networks meanwhile it is accompanied by an evolution of the nonradio aspects under. The inherent flexibility of this architecture enables sprint to diversify network resources and place them at locations which make the most efficient use of available building and network resources. Pdf with the rapid increase in international roaming and highly growing. A 3g mobile network offers good download and upload speeds. It is an integration of various technologies including gsm, cdma,gprs,imt2000,wireless lan.
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. Basic cdma and cdma2000 network architecture and hardware capacity implicationsbasic cdma. It was the combination of these two network elements that provided the basis for the 3g umts network architecture. Cdma2000, also known as imt cdma multicarrier or 1xrtt, is a codedivision multiple access version of the imt2000 standard developed by the international telecommunication union itu.
Cdma2000 is another branch of 3g network under umts specifications. We have discussed the key architecture elements to enable wlancdma services. An important function of oss is to provide a network overview and support the. Logically, the cn is divided into the cs circuit switched domain and the ps. You can easily clear job interviews and college exams after taking this 3g quiz. The main distinction between gsm and cdma is that in gsm, the customer. Cdma codedivision multiple access cpp cello packet platform dsss directsequence spread spectrum gsm global system for mobile communication ha home agent hlr home location register. Cdma is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. Network architecture options and performance 3 the architecture in figure 3 shows a simplified view of the parallel lte and 2g3g networks. The gsm architecture also contains an intelligent network subsystem.
Pdf mobile positioning in cdma cellular networks researchgate. What is cdma2000 imtcdma multicarrier or codedivision. The technicality of cdma technology has given significant advantages over other parallel technologies in terms of spectrum efficiency and overall. The ms is the mobile subscriber equipment, which can originate and receive calls and communicate with the bts. Technologies tdmafdma cdma gsm european standard is 6 u. Telecommunications network and service architectures. The radio access network changed considerably as a completely new radio interface was used based around the use of cdma. Technology and management training courses and seminars. The purpose of oss is to offer the customer costeffective support for centralized, regional, and local operational and maintenance activities that are required for a gsm network. Cdma is the base on which access methods such as cdmaone, cdma2000, and wcdma are built. Its first of the two part lectures which will cover gsm and cdma, the brief out line for.
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. Information on currently operating networks should be updated. Wcdma including the ran radio access network and the cn core network. As the term implies, cdma is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth. Umts makes use of wcdma, a technology that shares much with cdma networks used throughout the world, though it is not compatible with them. Cdma can be implemented in several ways, two of which are frequency hopping and direct sequencing. At any rate, we recommend you look at the details of when youre guaranteed service through with your network provider. Cdma network architecture consists of following elements mobile station ms. Gprs network in 3g is similar to that of the 2g gsm network.
Telcom 2720 6 utran architecture utran contains several rnss node b can support fdd or tdd. Often described as a true intelligence network, gsm is called the first true wireless network because. The cdma mobile system architecture wiley online library. Umts is evolved from gprs to replace the radio access network.
Pdif access control mobility management wlan to cdma2000 1x handoff is an important element to enable the wlancdma services for the near term longerterm focus should be on solutions for seamless wlan voip to cdma2000 1xevdo voip handoff. Handoff decisions, congestion control, power control, encryption, admission control, protocol conversion, etc. Umts works on wcdma, cdma2000 and tdscdma implementations by 3gpp and 3gpp2. In 1985, the fcc allocated three frequency bands to spread spectrum communications. The gsm network architecture is defined in the gsm specifications and it can be grouped into four main areas. Architecture of the gsm system gsm is a plmn public land mobile network several providers setup mobile networks following the gsm standard within each country gsm system comprises 3 subsystems rss radio subsystem. Pdif access control mobility management wlan to cdma2000 1x handoff is an important element to enable the wlan cdma services for the near term longerterm focus should be on solutions for seamless wlan voip to cdma2000 1xevdo voip handoff.
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. Wcdma network architecture wcdma including the ran radio access network and the cn core network. Umts network is called a third generation network 3g. Take this free onlinetest or quiz or trivia on 3g umts cdma2000 cdma network architecture and interfaces.
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