2G & 3G Overview

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2G & 3G Overview

  1. 1. 2G and 3G Overview Presented by BERNARD COLLINS 2G and 3G overview
  2. 2. Course objectives.We will cover the basic network architecture.Look at the abbreviations commonly used.Discuss skill sets for personnel. 2G and 3G overview
  3. 3. 2G - Second generation mobile phone networks2G is also known as GSMGSM stands for Global System forMobile communication 2G and 3G overview
  4. 4. BSS - Base Station Subsystem.MS - Mobile Station.BTS - Base Transceiver Station.BSC - Base Station Controller. 2G and 3G overview
  5. 5. BSC -Base Station Controller BTS MS BSC TCSM BTSMS- Mobile Station BTS BTS- Base Transceiver Station MS TCSM- Transcoder and submultiplexer BSS BSS – Base Station Subsystem 2G and 3G overview
  6. 6. BSS Basic functions.MS - Mobile Station - Converts speech to a digital format and transmits this to the BTS via the air interface in the form of radio waves. Receives radio waves from the BTS and converts the digital format to speech. Monitors the quality and level of the radio waves from the BTS, and reports these back, so the BSC can decide if the MS needs to receive from another BTS. Encrypts the radio signals, so the call cannot be listened to by people with scanners. 2G and 3G overview
  7. 7. BSS Basic functions.BTS -Base Transceiver Station- Receives radio waves and converts them to another digital format, to transmit to the BSC. Takes the digital signals from the BSC and converts them to radio waves, which are transmitted to the MS. Monitors quality and levels of the radio waves and reports to the BSC, so the BSC can decide if the MS needs to receive from another BTS. Holds configuration and software for itself. Reports alarms back to BSC Has an interface for staff to configure the BTS and monitor it. 2G and 3G overview
  8. 8. BSS Basic functions.BSC -Base Station Controller - Sends and receives calls for all its BTS’s back to the rest of the network, controls the call functions. Monitors the levels and quality of all the BTS and MS reports, and controls the handovers of all the MS in it’s area. Holds configuration and software for itself, and all the BTSs attached to it. It also holds backups of these. Takes alarms for itself and all the BTSs attached to it and passes them to the monitoring systems. Takes the performance data of itself and all the BTSs attached to it and passes this back to the monitoring system. Provides an interface where staff can change the configuration software and features of the BSC and the BTS’s. 2G and 3G overview
  9. 9. BTS BSC TCSM MSCMS BTS MSC- Mobile switching centre BTS SGSN MS SGSN- Serving GPRS Support Node BSS NSS (CORE) 2G and 3G overview
  10. 10. BSC -Base Station Controller BTS BSC TCSM MSC MS BTS MSC- Mobile switching centreMS- Mobile Station BTS BTS- Base Transceiver Station SGSN MS TCSM- Transcoder and submultiplexer SGSN- Serving GPRS Support Node BSS NSS BSS – Base Station Subsystem (CORE) 2G and 3G overview
  11. 11. NSS - Network Sub System Core Network 2G and 3G overview
  12. 12. NSS ( Core)BSS VLR MSC- Mobile Switching Centre MSC GMSC GMSC - Gateway MSC VLR- Visitor Location Register HLR- Home Location Register AUT AUT- Authentication Centre CG HLR EIR- Equipment Identity Register EIR CG- Charging Gateway SGSN- Serving GPRS support Node SGSN GGSN GGSN- Gateway GPRS Support Node 2G and 3G overview
  13. 13. NSS ( Core)BSS VLR CS Core- Circuit Switched Core. Speech. MSC GMSC HLR,VLR,AUT,EIR- Databases for call setup. AUT CG- Charging Gateway, Billing. CG HLR EIR PS Core- Packet Switched Core. SGSN GGSN Data- Web or Email. 2G and 3G overview
  14. 14. NSS Basic functions. CS CoreMSS- Mobile Switching Centre - Holds limited information about the BSCs and BTSs attached to it. Has it’s own configuration and backups. Translates the dialled numbers and routes them to the correct GMSC or other switch. Controls part of call setup, contacts HLR and controls handovers when other Macs are involved Passes alarms for itself back to the monitoring system. Passes performance data for itself back to monitoring system Generates charging data and passes this to CG.VLR- Visitor Location Register - Database for MS in MSC area with information about what feature those MS’s have.GMSC- Gateway MSC - Connects network to other providers systems. Translates dialled digits if required. 2G and 3G overview
  15. 15. NSS Basic functions. PS CoreSGSN- Serving GPRS Support Node - Controls and keeps track of those MS using data, to route data packages to the correct BSC and BTS. Generates charging data and passes it to the CG Reports alarms and performance back to monitoring system. Stores it’s own configuration and backups. Has interface for staff to monitor and configure node.GGSN-Gateway GPRS Support Node- Acts as a router between the mobile network and other networks such as the internet. Performs routing of data packets to correct SGSN and MS allowing MS to move between SGSNs. Converts addresses used in the mobile network to those used outside and vice versa Reports alarms and performance back to monitoring system. Has own configuration and backups. Has interface for staff to monitor and configure node. 2G and 3G overview
  16. 16. NSS Basic functions. Other elementsHLR- Home Location Register - Database of MS and the features and functions they poses. Database of the current locations and states of the MS Stores it’s own configuration and backups. Has interface for staff to monitor and configure node.AUT- Authentication Centre - With MS encrypts the radio interface Stores it’s own configuration and backups. Has interface for staff to monitor and configure node.EIR- Equipment Identity Register - Holds the white, grey and black list for Mobile StationsCH- Charging Gateway - Provides interface to billing platforms with backup for records. 2G and 3G overview
  17. 17. NSS ( Core)BSS VLR MSC- Mobile _ _ _ _ _ _ _ _ _ _ _ _ _ MSC GMSC GMSC - _ _ _ _ _ _ MSC VLR- V_ _ _ _ _ _ Location Register HLR- H_ _ _ Location Register AUT AUT- A_ _ _ _ _ _ _ _ _ _ _ Centre CG HLR EIR-Equipment _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ EIR CG- C_ _ _ _ _ _ _Gateway SGSN- S_ _ _ _ _ _ _ _ _ _ Support Node SGSN GGSN GGSN- G _ _ _ _ _ _ _ _ _ _ Support Node 2G and 3G overview
  18. 18. NSS ( Core)BSS VLR MSC- Mobile Switching Centre MSC GMSC GMSC - Gateway MSC VLR- Visitor Location Register HLR- Home Location Register AUT AUT- Authentication Centre CG HLR EIR- Equipment Identity Register EIR CG- Charging Gateway SGSN- Serving GPRS support Node SGSN GGSN GGSN- Gateway GPRS Support Node 2G and 3G overview
  19. 19. OSS- Operational Support System Alarms Configuration and Control Performance Network backup OSS BSS NSS -CS NSS -PS AUT SGSN GGSN BSC MSC HLR CG EIRMS BTS 2G and 3G overview
  20. 20. OSS- Operational Support System NOC Network Performance Configuration OSS BSS NSS -CS NSS -PS AUT SGSN GGSN BSC MSC HLR CG EIRMS BTS 2G and 3G overview
  21. 21. OSS- Operational Support System Administrators.Users WAN/LAN Maintenance. Configuration. IP DATA APPS Software – Applications and tools -Users Hardware – Servers and LAN -Administrators Software – Operating systems -Administrators 2G and 3G overview
  22. 22. 3G Third Generation Mobile Networks 2G and 3G overview
  23. 23. Overview3G- Also known as UMTS- Universal Mobile Terrestrial System.Introduced to provide higher data rates.Uses different equipment from 2G in the radio interface and some coreelements are the same, others are new.Maybe be the same or different manufacturer to existing 2G.Can be a 3G only network, for example “3” in the UK.Designed so calls can be handed between 2G and 3G when needed. 2G and 3G overview
  24. 24. RNC –Radio Network Controller WBTS UE RNC WBTSUE- User Equipment WBTS - Wideband BTS SGSN UE NSS RAN – Radio Access Network 2G and 3G overview
  25. 25. Similarities and differencesBSS has become RAN- Radio Access NetworkMS has become UE- User Equipment, a phone, PDA, credit card machine etc.BTS has become WBTS- Wideband Base Transceiver StationBSC has become RNC- Radio Network Controller 2G and 3G overview
  26. 26. NSS- CS CoreRAN Release 99 or R99, first release of 3G. MGW MSC GMSC MGW- Media Gateway MGW- Converts 3G coding of speech and data to older methods MSC- changes dialled digits and controls switching. Release 4 or R4 newest release MGW GMSC MGW- Converts 3G coding of speech and data to older methods MGW- Does all call switching MSS- changes dialled digits and MSS controls switching. 2G and 3G overview
  27. 27. RAN NSS ( Core) MGW- Media Gateway MGW GMSC MSS- Mobile Switching Server GMSC - Gateway MSC VLR MSS VLR- Visitor Location Register HLR- Home Location Register AUT AUT- Authentication Centre CG HLR EIR- Equipment Identity Register EIR CG- Charging Gateway SGSN- Serving GPRS support Node SGSN GGSN GGSN- Gateway GPRS Support Node 2G and 3G overview
  28. 28. Personnel 2G and 3G overview
  29. 29. Possible rollout structure BSS NSS OSS Management Planning and Planning CS Planning OSS Acquisitions core Install and Install and Commission CS Install andCommission BSC Commission OSS Core Install and Planning PSCommission BTS core Install and Commission PS Core 2G and 3G overview

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