The conventional commercial cellular network architecture is based on an infrastructure. The gsm network architecture provided a simple and yet effective architecture to provide the services needed for a 2g cellular or mobile communications system. Members of the obsai twg serve voluntarily and without compensation. Base transceiver station and base station controller tasks of a bss are distributed over bsc and bts q bts comprises radio specific functions q bsc is the switching center for radio channels functions bts bsc management of radio channels x frequency hopping fh x x management of terrestrial channels x mapping of terrestrial onto radio channels x.
A diagram of a cellular system showing all the parts. Pdf gsm architecture bts bsc msc find, read and cite all the research you need on. It provi des registration, authentication, call location, intermsc handovers and. Gsm technology global system for mobile communication or groupe special mobile to standardize cellular communication thoughout europe. The gsm base station controller bsc corre sponds to the wcdma publishing industry india pdf radio network controller. The base station is divided into a main unit and a radio unit such that the radio unit is positioned proximate to the antennas and the main unit is remotely located from the radio unit. 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. This gsm tutorial covers gsm basics, gsm architecture and gsm system features.
A bsc is often based on a distributed computing architecture, with redundancy applied to critical functional. Lte 4g ran architecture eumts introduction in previous generations, the base stations were controlled by a central device. The device enables the base station to register mobile phones in the cell a geographic area to perform handoff, call setup and call termination. This includes various network entities, how they interact with each other via different reference points. The nbs receiver lna selects and amplifies gsm signal bursts operating at 900mhz and 1800mhz radio frequency band. Bsc base station controller free download as powerpoint presentation. The base station controller bsc the bsc manages the radio resources for one or more btss. This chapter introduces the reader to the voice over long term evolution volte system architecture. A number of bscs are served by one 1 msc, but several btss can be controlled by one 1 bsc. Key bsc functions include radio network management such as radio frequency control, bts handover management and call setup. According to different service requirements, fiberoptic cable availability and network resource allocations, ran real time and nonreal time resources can be deployed on the site or on the access cloud side.
Vinod joseph, srinivas mulugu, in network convergence, 2014. Strategy of mobile station and base station system in gsm network. In this paper, we introduce our achievements regarding this base station, which use highly efficient rf highpower amplifier technology, as a very small outdoor unit, and the base band technology. Base transceiver station for wcdma system vsatoshi maruyama vkatsuhiko tanahashi vtakehiko higuchi manuscript received august 8, 2002 in january 2001, fujitsu started commercial delivery of a wcdma base transceiver station bts. Plantesp control monitoring software can put them to work and pave the way to optimized process performance. It allows the mobile switching center to communicate with networks like pstn, isdn, cspdn, pspdn and other data networks. Abstract this document recommends the radiation envelope patterns and gains for the base transceiver station bts antennas. A base station controller bsc is a critical mobile network component that controls one or more base transceiver stations bts, also known as base stations or cell sites.
Mar 25, 2019 in this tutorial, we will learn about what are wireless sensor networks or wsn, what are the motivations for development of wireless sensor networks, different applications of wireless sensor networks, the topologies behind the network node and many other topics. Bsc base station controller telecommunications standards. Base station controller bsc provides the control functions and physical links between the mobile service switching centre msc and the base transceiver station bts. Mobile equipment me physical terminal, such as a telephone or pda. The additional components of the gsm architecture comprise of databases and messaging systems functions. Supervisory, control and data acquisition scada programmable logic controllers plc.
Global system for mobile gsm university of pittsburgh. It is hoped that the model can also be the basis for standardization of base station components. Gsm is the short form of global system for mobile communications. A bts is controlled by a parent bsc via the base station control function bcf. In this book we split architecture into three domains. This basic tutorial on gsm architecture also covers gsm burst types, gsm frame structure, gsm channels, gsm physical layer and so on. Microcells antennas move to buildings, hills, and lamp posts. Let us understand gsm layer 1, layer 2 and layer 3 modules of msmobile station,bts base transceiver station,bsc base station controller and mscmobile switching center. It handles radio channel setup, frequency hopping, and handovers. The msc plays a significant role in handovers, particularly handovers involving multiple base station controllers known as interbsc or intramsc handovers as well as those involving multiple mscs, known as intermsc handovers. The bsc is the connection between the mobile and the msc.
They comprise an air interface between the users mobile device and the base station and two core networks. Us6801788b1 distributed architecture for a base station. Introduction from an electronics engineers perspective, a sensor is a device that is used to. Base station controller bsc provides the control functions. Gsm explain gsm architecture with a neat block diagram. The gsm standard was developed for setting protocols for second generation 2g digital cellular networks. In 2g, it was the base station controller, and in 3g it. Abbreviated as bsc, the base station controller is a combination of device and software used by a base station.
Mar 31, 20 system architecture base station subsystem bss base station subsystem is composed of two parts that communicate across the standardized abis interface allowing operation between components made by different suppliers1. A small network operator may employ only one msc, while a large operator requires multiple mscs. Each bss comprises many base station controllers bsc that connect the mobile station to the network and switching subsystem nss through the mobile switching center 4. Mar 03, 2018 lte 4g ran architecture eumts introduction in previous generations, the base stations were controlled by a central device. A base transceiver station bts, or cellphone tower, holds the radio transceivers that define a cell and coordinates the radiolink protocols with the mobile device. In 2g, it was the base station controller, and in 3g it was the rnc. Elements like the base station controller, msc, auc, hlr, vlr and the like. With access to the right process and controller data plantesp can begin to baseline your facilitys control loop performance virtually overnight. The design philosophy has been to use advanced technology in order to create a point to multipoint system with high bandwidth efficiency, and comparatively large range.
A telecommunication base station transceiver subsystem that can be easily configured to provide single or multicarrier frequency service. The cablefree 4g5g lte base station includes remote radio head rrh which typically feature 2. The base station subsystem bss is the section of a traditional cellular telephone network which is responsible for handling traffic and signaling between a mobile phone and the network switching subsystem. A mobile station that selects one of a plurality of base stations according to. These include zte zxg10 ibsc base station controller, v6. A mobile switching center msc is the centerpiece of a network switching subsystem nss. Development of the base station transceiver subsystem in the cdma mobile system. The bsc also translates the kbps voice channel used over the radio link to the standard 64 kbps. Open base station architecture initiative wikipedia.
In the subsequent 4glte architecture, voice and data are both based on ip packets. Existing industry solutions have been tailored to meet the immediate needs of 2g or 3g transport, which entails connectivity from the base transceiver station btsnodeb to the base station controller bscradio network controller rnc. We then dramatically increased the number of traffic channels in this bts and reduced its power consumption. Building management systems bms also known as building automation systems bas, building management and control system bmcs, direct digital controls ddc and building controls other terms associated with control systems include.
The base transceiver station bts the bts houses the radio transceivers. Gsm or global system for mobile communications is the most popular wireless cellular communication technique, used for public communication. Gsm architecture explained global system for mobiles. Zte base station controllers common criteria portal. There were four main elements to the overall gsm network architecture and these could often be further split. Use of the patch facility was limited because it tied up a frequency, and made no provisions for privacy. The bss carries out transcoding of speech channels, allocation of radio channels to mobile phones, paging, transmission and reception. Intelligent network in call in architecture connection with gsm network prepaid service ussd call back service ucb. The base station subsystem bss is the section of a traditional cellular telephone network. Mobile station communicates across um interface air interface with base station transceiver in same cell as mobile unit. Gsm architecture explained global system for mobiles tutorial. Home electronics basic electronics what is gsm and how does it work. Station controller bsc base station controller bsc bts bts bts bts bts d interface f interface c interface e interface telcom 2700 switching center traffic and signaling msc signaling only vlr visitor location register hlr home location register eir equipment identity register auc authentication center bts base transceiver. Users of mobile services had no access to the telephone system except for an occasional telephone patch capability in a base station.
Base station subsystem bss is one entity made up of bts, bsc, and transcoder tc base station controller bsc relatively complex linesofcode and low volume compared to bts from the network vendor perspective this can lead to higher margin and less competition. May 21, 2016 gsm architecture explained global system for mobiles tutorial. Purpose the purpose of this document is to provide recommendations for consideration. At the base of every cell tower there is a base transceiver station bts that processes. The msc is mostly associated with communications switching functions, such as call setup, release, and routing. 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. Pdf with the advent of development in lte system, enodeb the. Mobile wimax base station architecture and rf technology. It describes architecture of gsm protocol layers viz. Basics of wireless sensor networks wsn classification.
179 1253 231 30 895 1106 376 71 1047 110 584 1080 850 9 267 1423 621 470 694 838 198 558 1021 417 494 397 541 199 31 1167 1357 1370