UMTS Global Standard for 3G Wireless Communication Shariq Yasin - PowerPoint PPT Presentation

UMTS – Global Standard for 3G Wireless Communication Shariq Yasin Sr. Manager (RNE) 3G Technologies (Guarantee) Ltd. 29 th January, 2009

Central Asian CDMA Forum  Provide CDMA/WCDMA technology and development awareness, training and related industry support in Central Asia through; • Training & HR Development Collaboration with Governments, Regulatory Agencies, Operators, Academia, Professionals and Manufacturers • Benchmarking of the Industry • Technical Audit of Networks & Services • Media and advocacy • Inter-active discussion portal • Roaming and specifications development (associate membership of CDG) • Consultancies  Develop relationship with other Technology Development Organizations 2

Accomplishments Inter-active online portal  • Region Telecom Industry News, Technology Information, Discussion Forum & Job Postings Series of CDMA awareness programs on FM radio network on CDMA  Technology Trainings Conducted  • Kyrgyzstan, Azerbaijan, Tajikistan Operators & MOC/Regulator, INPT/WANA Moroco, Afghan Telecom, PTCL, PTA, FAB, Diallog, HEC, UET Lahore, IQRA University, DVcom, GIKI, IMS Peshawar, Telecard, Comsats etc. Co-operation with other CDMA organizations like CDG, CDMAU, CCF,  GHRC and regional CDMA Forum such as Africa CDMA Forum Bench marking & Audit of CDMA operators  Establishment of CDMA HR Development Centre.  Establishment of permanent Engineering Services Working Group (ESWG)  to resolve technical issues between CDMA operators GHRC Initiative for Pakistan WLL Operators  Held Seminars on UMTS awareness and regulations in Kyrgyzstan,  Tajikistan and Pakistan 3

Sections  Multiple Access  IMT2000 Umbrella  Evolution Path  UMTS Services  UMTS Overview  Network Architecture  Codes and Channels  LTE Overview  UMTS Deployment and General Aspects 4

Multiple Access

Multiple Access Techniques  Multiple Access • To maximize the usage of scarce resource like Frequency.  Three widely used techniques • Frequency Division Multiple Access • Time Division Multiple Access • Orthogonal Frequency Division Multiple Access • Code Division Multiple Access • Frequency Hopping Spread Spectrum (FH-SS) • Direct Sequence Spread Spectrum (DS-SS) 6

IMT2000 Umbrella

ITU, IMT2000  ITU (International Telecommunication Union) • Specialized agency of UN. • Standardization of Telecommunication and allocation of Spectrum • The Telecommunication Standardization Sector, ITU-T • The Radiocommunication Sector, ITU-R • The Telecommunication Development Sector, ITU-D  IMT-2000 (International Mobile Telecommunications) • Defined by ITU for the Global Standard for 3 rd Generation wireless communications in 1999 • Includes six radio interfaces as a part of the ITU-R M.1457 Recommendation: • WCDMA (UTRA-FDD) • CDMA2000 • TD-CDMA and TD-SCDMA • EDGE • DECT • IP-OFDMA TDD WMAN (in 2007) 8

3GPP  3GPP (3rd Generation Partnership Project) • Created in Dec 1998, for the collaboration between telecommunication associations to develop globally acceptable 3G mobile phone system under the scope of IMT-2000 • Technical Specifications and Technical Reports for a 3G Mobile System based on evolved GSM core networks and the radio access technologies that they support (i.e., Universal Terrestrial Radio Access (UTRA) both Frequency Division Duplex (FDD) and Time Division Duplex (TDD) modes). 9

Evolution Path

Need for Evolution Global Standard for cost effectiveness  New Services (Video Telephony)  Spectral Efficiency to accommodate more subscribers  More Throughput (more UL and DL requirements)  Global Roaming  Achieving Customer Expectations  Roadmap to Future Evolution  Vendor Support  • EOM: (End of marketing) End of new order (1~2 Yr) • EOFS: (End of Full support) End of bug fixing (3 Yr) • EOS: (End of Service) End of Service Supporting (4 Yr) 11

Evolution of 3G: Data Rates 12

Timeline: UMTS and CDMA2000 13

Evolution of 3G 14

UMTS Services

Call Types  Voice Call • Adaptive Multi-Rate (AMR) Voice Codec  Packet Switched (PS) Data • Reuses NAS layer of GPRS  Circuit Switched (CS) Data • Includes Sync / Async Data • Includes Group 3 Fax • Protocols the same as for GSM  Location Based Services (LBS) 16

Service classified  Multi- Services requires service classified QoS • Time-delay sensitivity 17

Device Support 18

UMTS Overview

UMTS and W-CDMA  UMTS: Universal Mobile Telecommunications System • UMTS encompasses the entire mobile communication system, including the two core networks, and up to three radio access networks. Non-Access PS-Core CS-Core Stratum (NAS) Network Network UTRA-FDD Access UTRA-TDD GSM/GPRS Stratum (WCDMA) 20

What is UMTS/WCDMA? • Universal Mobile Telecommunication System/Wide - band CDMA is a 3G, Direct Sequence CDMA-based Radio Access Network (RAN), with chip rate of 3.84 Mcps. • Designed to be deployed under GSM/GPRS network. • “WCDMA” refers to the FDD Physical Layer and the protocols that support it. • “UTRAN” refers to the UMTS/WCDMA Radio Access network. • “UMTS” refers to the entire network. 21

UMTS/WCDMA Spectrum The carrier frequency is designated by the UTRA Absolute Radio Frequency Channel Number (UARFCN), where F center = UARFCN * 200 KHz 22

UMTS/WCDMA Bandwidth 23

3GPP Standards Release 99 Release 4 Release 5 • FDD and TDD at 3.84 Mcps • TDD at 1.28 Mcps • UTRAN Transport to IP • Services as in GSM/GPRS • UTRA Repeater • IP Based Multimedia Services • Support for Multicall • Core Network Transport to IP • A-GPS with Open Interface for SMLC and RNC • Location Services • Non-transparent Real-Time • HSDPA Facsimile Release 8 HSDPA HSUPA • Long Term Evolution (LTE) • Included in Release 5 • Release 6 & 7 • New Access Technology • Adaptive modulation and coding • New Channels Added (E-DCH) based on OFDMA, CDMA • Multiple codes allocation • New Physical Dedicated and TDMA Channels for UL and DL • Physical Layer HARQ • DL Rates as high as • UL Rates as high as 5.4 Mbps 100Mbps • DL Rates as high as 10 Mbps • UL Rates as high as 50Mbps HSPA Release 7+ 24

Network Architecture

UMTS Network Topology 26

WCDMA R5 Network Architecture CS domain IP/ATM Backbone PSTN/PLMN MG MG GSM /GPRS BSS W W GMSC Server VMSC Server BSC HLR/AUC/HS BTS S Iu-CS SCE PCU SS7 RNC SMS SCP NodeB Iu-PS Internet, GPRS Intranet backbone SGSN UTRAN GGSN MGW PS MGCF CG BG domain IP backbone S-CSCF P-CSCF MRFC MRFP IMS domain 27

WCDMA RAN Architecture Core Network Iu Iu RNS RNS Iur RNC RNC Iub Iub Iub Iub Node B Node B Node B Node B Previous interfaces with new identities New Interfaces like Iur 28

Link Types RAB RB CN UE RNC RL NodeB RL: Radio Link RB: Radio Bearer RAB: Radio Access Bearer 29

UE Modes of Connection  Idle Mode • (No active Connection)  Cell_DCH • CS and PS Call connected with handover  Cell_FACH • PS Connected with Cell Update  Cell_PCH • PS Dormant with Cell Update  URA_PCH • PS Dormant with URA Update 30

Codes and Channels

Codes in UMTS/WCDMA • OVSF Codes: Orthogonal Codes • Gold Codes: Spreading Codes • DL PSC: 512, SSC: 7680 • UL Scrambling Codes: 16.8 million 32

OVSF OVSF & & Walsh Walsh C ch,4,0 =(1,1,1,1) C ch,2,0 = (1,1) C ch,4,1 = (1,1,-1,-1) C ch,1,0 = (1) C ch,4,2 = (1,-1,1,-1) C ch,2,1 = (1,-1) C ch,4,3 = (1,-1,-1,1) SF = 1 SF = 2 SF = 4 OVSF codes (Walsh) are completely orthogonal and their mutual correlation is zero. 33

Purpose of OVSF  Downlink SF of typical service Typical service Data rate Downlink SF AMR 12.2, kbps 128 VP 64kbps 32 144kbps 144kbps 16 384kbps 384kbps 8 HSDPA 14.4mbps for one cell 16 34

Physical Layer Procedures 35

UMTS Logical Channel Broadcast Control Channel （ BCCH ） Paging Control Channel （ PCCH ） Control Channel （ CCH ） Dedicated Control Channel （ DCCH ） Common Control Channel （ CCCH ） Dedicated Traffic Channel （ DTCH ） Traffic Channel （ TCH ） Common Traffic Channel （ CTCH ） 36

UMTS Transport Channel Dedicated Channel DCH • Dedicated transport DCH includes uplink and downlink channel Broadcast Channel BCH Forward Access Channel FACH Common transport Paging Channel PCH channel Random Access Channel RACH 37

Channel Mapping 38

Functions of Physical Channel Cell broadcast channels P-CPICH – Primary Common Pilot Channel S-CPICH – Secondary Common Pilot Channel P-CCPCH- Primary Common Control Physical Channel SCH – Synchronous Channel Paging channel S-CCPCH – Primary Common Control Physical Channel PICH – Paging Indicator Channel Random access channel UE Node B PRACH – Physical Random Access Channel AICH – Acquisition Indicator Channel Dedicated channel DPDCH – Dedicated Physical Data Channel DPCCH – Dedicated Physical Control Channel High speed downlink shared channel HS-SCCH – High Speed Shared Control Channel HS-PDSCH － High Speed Physical Downlink Shared Channel HS-DPCCH – High Speed Dedicated Physical Control Channel 39

LTE Overview