Gsm the network switching subsystem nss tutorialspoint. The network switching subsystem the nss plays the central part in every mobile network. Telecommunications network and service architectures. Ccna routing and switching 200120 official cert guide wendell odom.
Guided tour to networking on linux kindle edition by christian benvenuti. As are many concepts on this whole page these should be either broken out into their own network generic pages, andor much of this page needs to be less gsm specific. The intelligent network subsystem in comprises scp databases that add optional functionality to the network. A transmission network generally consists of hundreds of multiplexers and tens ofthousands of kilometers of optic fiber. At the end of this chapter, we show the new network elements as well as the core network protocol of the gprs. Blokdyk ensures all network and switching subsystem essentials are covered, from every angle. The msc performs the switching of calls between the mobile and other fixed or mobile network users, as well as the management of mobile services such as registration, authentication, location updating, handovers, and call routing to a roaming. Pdf switching and signaling in telecommunication network. It provides the complete set of control and database functions needed to set up a call using encryption, authentication and roaming features. The msc is the central unit in the nss and controls the traffic among all of the bscs. When a mobile makes a call, auc authenticate the sim card that attempts to connect to the gsm core network. Download it once and read it on your kindle device, pc, phones or tablets.
Network subsystem ns provides link between cellular network and pstns controls handoffs between cells in different bsss authenticates users and validates accounts enables worldwide roaming of mobile users central element of ns is the mobile switching center msc. 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. Performance tuning the network subsystem, particularly for network intensive workloads, can involve each layer of the network architecture, which is. It is the equivalent of the gsm network switching subsystem or nss. It deploys the switching of calls between the mobile and other fixed or mobile network users, along with the management of mobile services like authentication.
It responds to gsm nss engineering practice for gsm technicians. We explain the functions of the most important network elements. This book gsmnetwork switching subsystem engineering gives the main concepts, and models of gsm systems engineering at core network level. The book introduces you to all the interfaces between the gsm subsystems, starting with the abis and air interface and continuing on to vlrs, hlrs and mscs. Read network switch books like enterprise ethernet switches third edition and planning, designing and implementation of it networks using network infrastructure and security measures for free with a free 30day. A comparative analysis of ethernet, tcpip, and fibre channel in the context of scsi introduces network administrators to the requirements of storage protocols explains the operation of network protocols to storage administrators compares and contrasts the functionality of ethernet, tcpip, and fibre channel documents the details of the major protocol suites, explains how they. Lets now see a selection of what we think are the best books for network engineers.
Apr 07, 2020 you can use this topic for an overview of the network subsystem and for links to other topics in this guide. The nss controls the switching functions of the gsm system. You can use this topic for an overview of the network subsystem and for links to other topics in this guide. Network switching system nss is the main component of the mobile switching center msc. So after finishing base station subsytem, today we are going to cover one of the most integral parts of gsm core network. It manages call set up function, routing and basic.
The book introduces you to all the interfaces between the gsm subsystems. Multiple choice questions and answers on telecommunication. The book introduces you to all the interfaces between the gsm subsystems, starting with the abis and air interface and continuing on to vlrs, hlrs and mscs within the network switching subsystem nss. Once this authentication is done and is successful, the hlr is allowed to manage the sim. Jul 26, 20 the network and switching subsystem nss handles the switching of gsm calls between external networks and the bscs in the radio subsystem and is also responsible for managing and providing external access to several customer databases. Jan 11, 2005 gsmnetwork switching subsystem engineering.
Mobile telecom system architecturesims an evolution path towards ip convergence. The network switching subsystem nss from publication. Learn from network switch experts like gerardus blokdyk and international journal for scientific research and development ijsrd. Network elements within the nss assume responsibility for the complete set of control and database functions required to set up call connections using one or more of these features.
The network switching subsystem nss home location register hlr and. This book gsm network switching subsystem engineering gives the main concepts, and models of gsm systems engineering at core network level. Base station subsystem the base stations and their controllers. Gsm the network switching subsystem nss tech spider. Free download cisco networking books todd lammle,wendell odom, atm books window server 2003, border gateway protocol ip addressing services and more. An introduction to mobile networks and mobile broadband book. The gsm network is called public land mobile network plmn. The paper investigates a novel visual conceptbased biomedical image. A quick look inside of some of the subjects covered. One of the strengths of this book is to integrate the pieces and reveal the relationships between farflung functions and data structures. The network management subsystem nms is the third subsystem of the gsm network in addition to the network switching subsystem nss and base station subsystem bss, which we have already discussed.
Network switching subsystem, 9786549367, please note that the content of this book primarily consists of articles available from. It allows the mobile switching center to communicate with networks like pstn, isdn, cspdn, pspdn and other data networks. Mobile services switching center msc the central component of the network subsystem is the msc. Describe the function and operation of layer 2 switching, layer 3 switching, and routing. During the process, an encryption key is also generated which is later used to encrypt all wireless communications be it voice, sms or any other mean, betwee. The network switching subsystem nss download scientific. The purpose of the nms is to monitor various functions and elements of the network. The gprs core network provides connectivity and routing of data packets from the gsm network to the internet. The intelligent network subsystem in comprises scp databases that add optional functionality to. Understanding linux network internals is both a bigpicture discussion and a nononsense guide to the details of linux networking. The link technology is generally optic fiber but may also be coax,radio, etc. The subscriber carries the mobile station, which is part or rss.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Get modern information technology flat symbols for telecommunication network topology diagrams. Discover the best network switch books and audiobooks. Network switching subsystem nss, handels the switching of gsm calls between external networks and the bscs in the radio subsystem. Network and switching subsystem the part of the network most similar to a fixed network, sometimes just called the core network. Gsm requires that all the trxs of a bts use the same the base station subsystem 23 300 m35 km bts trx bts trx bts trx the. Get modern information technology flat symbols for telecommunication network topology diagrams with cisco icons of. Jul 23, 2017 multiple choice questions and answers on telecommunication and switching systems multiple choice questions and answers by sasmita july 23, 2017 1 if n number of users are present in a network with pointtopoint links, then how many links will be required in the network. The network switching subsystem nss of the gsm network comprises. Computer networks pdf notes free download cn notes. The additional components of the gsm architecture comprise of databases and messaging systems functions. Gsm architecturethe network switching subsystem nss in. The network subsystem consists of a mobile switching center msc, a home location register hlr, a visitor location register vlr, an authentication center auc, and an equipment identity register eir.
It manages communication between gsm and other networks. Similarly phone book numbers and call information of the numbers of incoming and outgoing calls are stored. Network switching subsystem wireless communication notes on. Each bss comprises many base station controllersbsc that connect the mobile station to the network and switching subsystem nss through the mobile switching center 4. Functional architecture and principal interfaces gateway msc gmsc.
In order to set up a requested call, the call is initially routed to a gateway msc, which finds the correct. Gsm explain gsm architecture with a neat block diagram. The network interface card address, called the hardware address, is protocolindependent and is usually assigned at the factory. The switching network enables switching the traffic from the sender to the appropriatedestination. Layer 2 switching layer 3 switching layer 4 switching highspeed scalability low latency compared to routers 2 1 physical 7 6 5 4 application presentation session 3 data link transport network. The acronyms surrounding the mobile switching centre server are a bit confusing here and on the mobile switching centre page. 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 storage infrastructure includes storage subsystems, the storage area network san infrastructure, and host bus adapters hbas. Use features like bookmarks, note taking and highlighting while reading understanding linux network internals. Femtocell standardised architectures, network switching subsystem procedures.
It basically provides network connection to the mobile station. Routing in cellular wireless networks network routing. Database and elements of network switching subsystem icons. Core network switching subsystem gsm core network call. The functions of the nms can be divided into three categories.
The user equipment or ue is a major element of the overall 3g. Gsm architecturethe network switching subsystem nss in gsm. Network management subsystem nms the network management subsystem nms is the third subsystem of the gsm network in addition to the network switching subsystem nss and base station subsystem bss, which we have already discussed. The network subsystem nss, which is also called core network, contains all nodes and functionalities that are necessary for switching of calls, for subscriber management and mobility management. Network switching subsystem is the component of a gsm system that carries out call switching and mobility management functions for mobile phones roaming on the network of base stations. Gsm is an open, digital cellular technology used for transmitting mobile voice and data services. After the brief architectural overview, we discuss the protocols used in the network and switching subsystem nss.
Network switching subsystem news newspapers books scholar jstor march 2009 learn how and when to remove this template message. The core network is then the overall entity that interfaces to external networks including the public phone network and other cellular telecommunications networks. Network switching subsystem nss network management subsystem nms the three subsystems, different network elements, and their respective tasks are presented in the following. As are many concepts on this whole page these should be either broken out into their own networkgeneric pages, andor much of this page needs to be less gsm specific. Network management subsystem so after bss and nms, its turn of n etwork management subsystem nms. Please feel free to comment at the end of this article, if you have suggestions. The gsm network comprises three major subsystems the base station subsystem bss, the network and switching subsystem nss and the gprs core network. Network subsystem performance tuning microsoft docs. This book presents a sliding window of size seven days algorithm for. Summary this book develops hardware and software architectures related to modern digital switching systems. Multiple choice questions and answers on telecommunication and switching systems multiple choice questions and answers by sasmita july 23, 2017 1 if n number of users are present in a network with pointtopoint links, then how many links will be required in the network. Network switching subsystem nss or gsm core network is the component of a gsm system that carries out call out and mobility management functions for mobile phones roaming on the network of base stations. Gprs core network the optional part which allows packetbased internet connections.
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