Gsm and cdma network architecture and management pdf

Gsm is the short form of global system for mobile communications. Dual ruim that allow for use in both gsm and cdma units. It addresses the essential tasks involved in the umts network deployment in new regions and within existing 2g2. Gsm case study is part of a series of telecommunication case studies. Third generation mobile system communication standard where multiple user connected to the base station with. 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. Code division multiple access or cdma has its roots in wwii era spread spectrum technology. It was the combination of these two network elements that provided the basis for the 3g umts network architecture. An important function of oss is to provide a network. Gsm standard still evolving and improved with new features and services. The subscriber carries the mobile station, which is part or rss. Based on the mobility and session management mechanisms of the umts and cdma2000 ps service domains, an integrated architecture and intersystem roaming procedures are proposed to show the. The cellular industry is dominated by two technologies global system for mobile communication gsm and code division multiple access cdma.

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. Gsm network architecture, channelisation, signalling and. Audience this tutorial has been designed for readers who want to understand the basics of gsm in very simple terms. The cellular mobile service is being used everywhere in the world today. Careful network planning is thus a primary aspect of implementing gsm cdma networks network planning is an ongoing process requiring inputs from a lot of competence areas, such as transmission, access systems, data communications.

Code division multiple access cdma principle of cdma. The gsm network is divided into three major systems. Gsm global system for mobile communication is one of the most popular system used for mobile telecommunications especially in europe and asia. The network can be that of any of the wireless communication technologies like gsm, cdma, wireless local loop, wifi, wimax or other wide area network. Difference between 3g and 4g technology with comparison. Gsm architecture, mobility management, network signaling. Telecommunications network and service architectures. Figure 1 gives an simplified view of the network architecture with the three main network elements bts, bsc and msc. Gsm tutorial covering gsm basics, gsm network architecture, network elements, gsm system specifications, gsm frame structure.

Umts network is called a third generation network 3g. Umts makes use of wcdma, a technology that shares much with cdma networks used throughout the world, though it is not compatible with them. What is gsm global system for mobile communication. The additional components of the gsm architecture comprise of databases and messaging systems functions. Cellular network organization use multiple lowpower transmitters 100 w or less. In second and third generation wireless communication a. Umts works on wcdma, cdma2000 and tdscdma implementations by 3gpp and 3gpp2. Pstn public switched telephone network 2 global system for mobile communications gsm the gsm network is a mobile voice network. The note starts with the history of gsm and goes on to describe the gsm architecture and the gsm family. Difference between gsm and cdma with comparison chart. This gsm tutorial covers gsm basics, gsm architecture and gsm system features. Introduction global system for mobile communication gsm. The gsm architecture is divided into radio subsystem, network and switching subsystem and the operation subsystem.

The architecture of gsm networks consists of several functional entities that are listed. Gsm utilizes the code division multiple access cdma concept, rather than. This basic tutorial on gsm architecture also covers gsm burst types, gsm frame structure, gsm channels, gsm physical layer and so on. Gsm and cdma are two dominant technologies in the world of mobile communication. Gsm architecture and subsystems by standard the gsm network is divided into four 4 subsystems 1. Pdf the ability to communicate with the people on move has expanded a lot by using cell phones. Two basic technologies in mobile phones, cdma and gsm, represent a gap you cant cross. Telcom 2720 6 utran architecture utran contains several rnss node b can support fdd or tdd.

Base level umts networks are generally capable of downlink speeds as 384 kbps. A base transceiver station bts is a piece of equipment that facilitates wireless communication between user equipment ue and a network. Gsm cdma networks planning and design of gsm cdma networks a good geographical coverage is the basis. The 3g umts network architecture is migrated from gsm with some. Pdf on may 1, 2011, utsho a arefin and others published handover. These two technologies differ in the way calls and data travel over the mobile phone networks.

Gsm global system for mobile communication is a digital mobile network that is widely used by mobile phone users in europe and other parts of the world. The bss business support system is the interface to and the management of the customer. Evolutionary analysis of gsm, umts and lte mobile network architectures paschal a. Gsm uses a variation of time division multiple access and is the most widely used of the three digital wireless telephony technologies. Rium based cdma phones using optical fiber network. Evolutionary analysis of gsm, umts and lte mobile network. The radio sub system consists of the mobile station and base station subsystem. Course contents the need for 3rd generation systems standardisation umts services and applications umts architecture core network architecture and protocols w cdma applied to umts the umts air interface channels and protocols. Tdma time division multiple access and cdma code division multiple access technologies. Gsm supports transmitting data and voice both at once, but cdma have not this feature.

Study these interview mcq questions and answers on 3g umts cdma2000 cdma network architecture and interfaces. Easily clear job interviews and college exams after studying. This note gives an overview of the two different technologies. The oss operation support system is the management of the network and the services. On the other hand, in cdma the network identifies a handset by the information stored in the internal memory and hence, its handset specific. The bts base transceiver station is controlling the radio transmission and the interface to the mobile phones. The radio access network changed considerably as a completely new radio interface was used based around the use of cdma. The mobile station ms the base station subsystem bss the network switching subsystem nss the operation support subsystem oss given below is a simple pictorial view of the gsm architecture. The additional of packet data with gprs required additional network entities to be added. Umts gsm network architecture gprs core packet switched sgsn ggsn internet gsm ran base station base station controller. In 1985, the fcc allocated three frequency bands to spread spectrum communications. Gsm network architecture, channelisation, signalling and call processing dr bhaskar ramamurthi professor department of electrical engineering.

Answer 3, gsm and cdma techniques can be explained with an example suppose there are 10. Gsm technology was developed by europe in1982 but its massive deployment started in 1992. Pdf gsmglobal system for mobile communication thanks and. In 2000, gsm become very popular technology worldwide. Cdma can be implemented in several ways, two of which are frequency hopping and direct sequencing. 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. The gsm architecture consists of multiple network elements. The msc provides subscriber management functions such as. Gsm and cdma in cellular service, there are two chief competing network. It also provides information on the services provided by gsm and the working of gsm. 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.

The generic gsm network architecture is composed of three subsystems as the radio subsystem rss, the network and switching subsystem nss and the operation subsystem oss. Gsm uses digital communication system or dcs 1800 and is the worlds main. Radio resource management strategies in gsm and cdma are also discussed. The difference between 3g and 4g technology is based on technology compliance, data transfer rate, capacity, ip architecture and number of connections, etc. Gsm is in use over 80% of the worlds mobile networks in over 210 countries as compared to cdma. The simple representation of gsm network 065 gsm is worldwide.

Cellular networks northeastern university college of. Umts system architecture and protocol architecture. These two technologies differ the way in which the calls and data transfer takes place over a network and mobile. This tutorial provides an introduction to basic gsm concepts, specifications, networks, and. The mobile station interacts with the access network to. Gsm and cdma are the most successful cell phone technologies present in world, cdma handsets. A basic understanding of gsm architecture and procedures would be an advantage, but not essential. Handoff decisions, congestion control, power control, encryption, admission control, protocol conversion, etc. All ip in 3g cdma networks covers all the key aspects of umts and its implementation from both the engineering designer and the operator and service providers point of view. Its first of the two part lectures which will cover gsm and cdma, the brief out line for. Outline of the lecture evolutions form gsm to umts. For gsm, implementation of fixed channel allocation fca is discussed in 3.

Rnc radio network controller equivalent to gsm bsc responsible for radio resource management and control of the node bs. The internet access quality between two competitive networks gsm and cdma using a. Gsm and cdma are competing wireless technologies with gsm enjoying about an 82% market share globally. So here this is a birds eye view of the gsm network architecture so you have the base stations subsystem. The umts architecture takes advantage of the existing gsm and gprs networks which serve as a core network in umts infrastructure. 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. World scientific news 54 2016 2739 29 the gsm architecture is made up of majorly three subsystems which include the mobile station, network and switching subsystem nns, and the base station. 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.

Gsm uses narrowband time division multiple access tdma for providing voice and text based services over mobile phone networks. The gsm architecture also contains an intelligent network subsystem. Difference between cdma and cdma pdf semantic scholar. Gprs network in 3g is similar to that of the 2g gsm network. Gsm tutorial gsm is a globally accepted standard for digital cellular communications. Global system for mobile gsm is a second generation cellular standard developed to cater voice services and data delivery using digital modulation 4.