Unit 3 it6601 presentation
- 2. SYLLABUS: UNIT -3 Global System for Mobile Communication (GSM) General Packet Radio Service (GPRS) Universal Mobile Telecommunication System (UMTS)
- 3. Contents of Presentation GPRS and its Features GPRS Network Architecture GPRS Protocol Architecture GPRS Services GPRS Applications
- 4. Constraints with existing network • Data Rates too slow – about 9.6 kbps • Connection setup time too long • Inefficient resource utilization for bursty traffic • Proves expensive for bursty traffic utilization • No efficient method for packet transfers
- 5. Comparison of GSM & GPRS GSM GPRS Data Rates 9.6 Kbps 14.4 to 115.2 Kbps Modulation Technique GMSK GMSK Billing Duration of connection Amount of data transferred Type of Connection Circuit – Switched Technology Packet - Switched Technology
- 6. What is GPRS ? General Packet Radio Service (GPRS) is a new bearer service for GSM that greatly improves and simplifies wireless access to packet data networks GPRS applies packet radio principal to transfer user data packets in an efficient way b/w MS & external packet data network
- 7. Benefits of GPRS New Data Services High Speed (Data Rate 14.4 – 115 kbps) Efficient use of radio bandwidth (Statistical Multiplexing) Circuit switching & Packet Switching can be used in parallel Constant connectivity
- 8. GPRS Network Elements GPRS Architecture is same as GSM except few hardware modifications : GPRS includes GSNs SGSN : Serving GPRS Support Node GGSN : Gateway GPRS Support Node GPRS Register
- 11. Interfaces Gb – Connects BSC with SGSN Gn – SGSN – SGSN/GGSN (in the same network) Gp – SGSN –GGSN (in different networks) Gf – For equipment querying at registering time Gi – Connects PLMN with external Packet Data Networks (PDNs) Gr – To exchange User profile between HLR & SGSN Gs – To exchange Database between SGSN & MSC Gd – Interface between SMS & GPRS
- 12. SGSN – Serving GPRS Support Node • Delivers data packets to mobile stations & vice-versa • Detect and Register new GPRS MS in its serving area • Packet Routing, Transfer & Mobility Management • Authentication, Maintaining user profiles • Its location register stores location info. & user profiles
- 13. GGSN – Gateway GPRS Support Node • Interfaces GPRS backbone network & external packet data networks • Converts the GPRS packets from SGSN to the PDP format • Converts PDP addresses change to GSM addresses of the destination user • Stores the current SGSN address and profile of the user in its location register • Performs authentication • Many-to- many relations among SGSNs & GGSNs
- 14. GPRS Register GPRS Register is integrated with GSM-HLR. Maintains the GPRS subscriber data and Routing information. Stores current SGSN address
- 15. GPRS Services • Offers end-to-end packet switched data transfer • Bearer Services • PTP - Point-To-Point service (CLNS mode) • PTM - Point-To-Multipoint service(CONS Mode) • PTM-M Multicast service • PTM-G Group call service • Supplementary Services • SMS Short Message Service • CFU Call Forwarding Unconditional
- 16. GPRS Services (Contd.) Quality of Service • GPRS allows defining QoS profiles • Service precedence, reliability, delay, throughput
- 17. Applications of GPRS Web browsing Corporate & Internet Email Vehicle Positioning Remote LAN Access Home Automation Document Sharing/Collaborative working
- 18. Universal Mobile Telecommunication Standard(UMTS) The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Circuit- and Packet-Oriented Services UMTS uses wideband code division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators High data rates and improves the quality of service
- 19. UMTS Network Architecture User Equipment: A mobile station or cell phone contains two major components, - SIM - Mobile Device Radio Network Subsystem: The RNS is the equivalent of the GSM Base Station Subsystem. Core Network: The core network is the equivalent of the GSM Network Switching Subsystem.
- 20. 20 UMTS Network Architecture USIM ME Node B Node B RNC Node B Node B RNC MSC/ VLR GMSC SGSN GGSN HLR UTRAN CNUE ExternalNetworks Cu Uu Iu Iub Iur
- 21. THANK YOU