UMTS Global Standard for 3G Wireless Communication. Shariq Yasin Sr. Manager (RNE) 3G Technologies (Guarantee) Ltd.

Transcription

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

2 2 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

3 3 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

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

5 Multiple Access

6 6 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)

7 IMT2000 Umbrella

8 8 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)

9 9 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).

10 Evolution Path

11 11 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)

12 Evolution of 3G: Data Rates 12

13 Timeline: UMTS and CDMA

14 Evolution of 3G 14

15 UMTS Services

16 16 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)

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

18 Device Support 18

19 UMTS Overview

20 20 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 Stratum (NAS) CS-Core Network PS-Core Network Access Stratum UTRA-FDD (WCDMA) UTRA-TDD GSM/GPRS

21 21 What is UMTS/WCDMA? Universal Mobile Telecommunication System/Wideband 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.

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

23 UMTS/WCDMA Bandwidth 23

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

25 Network Architecture

26 UMTS Network Topology 26

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

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

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

30 30 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

31 Codes and Channels

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

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

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

35 Physical Layer Procedures 35

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

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

38 Channel Mapping 38

39 39 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 Node B Random access channel PRACH Physical Random Access Channel AICH Acquisition Indicator Channel Dedicated channel DPDCH Dedicated Physical Data Channel DPCCH Dedicated Physical Control Channel UE 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

40 LTE Overview

41 41 Long Term Evolution The Third Generation Partnership Project (3GPP) has approved the functional freeze of LTE (Long Term Evolution) as part of 3GPP Release 8-11 th December 2008 Orthogonal Frequency Division Multiplexing (OFDM) has been selected for the Downlink and Single Carrier- Frequency Division Multiple Access (SC-FDMA) for the Uplink. The Downlink will support data modulation schemes QPSK, 16QAM, and 64QAM and the Uplink will support BPSK, QPSK, 8PSK and 16QAM. Supports MIMO and SMART Antenna technology

42 LTE Performance Requirement Metric Peak Data Rates Mobility Support User Plane Latency Control Plane Capacity Coverage (Cell Size) Spectrum Flexibility Requirement DL: 100 Mbps UL: 50 Mbps (for 20MHz spectrum) Up to 500kmph Optimized to 0 to 15kmph <5ms >200 users per cell (for 5MHz spectrum) 5 ~ 100km with slight degradation after 30km 1.25, 2.5, 5, 10 and 20 MHz 42

43 43 LTE Logical Channels Control Channel Broadcast Control Channel (BCCH) Paging Control Channel (PCCH) Common Control Channel (CCCH) Multicast Control Channel (MCCH) Dedicated Control Channel (DCCH) Traffic Channel Dedicated Traffic Channel (DTCH) Multicast Traffic Channel (MTCH)

44 44 LTE Transport Channels Downlink Channels Broadcast Channel (BCH) Downlink Shared Channel (DL-SCH) Paging Channel (PCH) Multicast Channel (MCH) Uplink Channels Uplink Shared Channel (UL-SCH) Random Access Channel (RACH)

45 45 LTE Entities Evolved NodeB (enb) Evolved Radio Access Network (eran) Serving Gateway (SGW) Mobility Management Entity (MME) Packet Data Network Gateway (PDN GW)

46 46 LTE Advance ITU has introduced a term IMT-Advanced for mobile systems beyond IMT-2000 scope. In June 2008, 3GPP held two workshops on Requirements for Further Advancements for E-UTRA IMT-Advanced 3GPP RAN working on LTE- Advanced

47 UMTS Deployment and General Aspects

48 UMTS Global Facts WCDMA Subscribers 351m HSPA Subscribers 79m HSPA Devices >1000 UMTS Deployments 260 in 105 countries HSDPA Deployments 230 in 90 countries 48 UMTS Forum 26 Jan 2009

49 49 Regional Status Middle East and North Africa Saudi Arabia, Kuwait, Oman, Bahrain, Yemen, UAE, Qatar Egypt, Libya, Algeria, Morocco, Turkey, Iran, Iraq and Afghanistan SAARC India, Bangladesh, Maldives, Bhutan, Afghanistan, Sri Lanka. Nepal Central Asia Kyrgyzstan, Armenia, Georgia, Tajikistan, Uzbekistan, Mongolia

50 UMTS Vendors Ericsson Huawei LG Alcatel-Lucent Motorola Nokia Siemens Network Samsung NEC Nortel Networks ZTE 50

51 Road to Deregulation Competition 2005 Onwards PTCL Privatisation 2004 Onwards Launch of New Mobile/WLL/ LDI Companies st GSM License Onwards Deregulation of state monopoly Paging Licenses 2000 Pakistan IT Policy 1994 DNOP/VAS Licenses, PTCL gets GSM License PTCL WLL 1994 Onward s Telecom Sector Reorganisation Card Payphone Licenses Paging License 51 Two AMPS Cellular Licenses Pakistan T&T Post and Telegraph Dept

52 Pakistan Government Telecommunication Bodies MOITT (Ministry of IT and Telecoms) Generation of Policy, and Oversight on PTA, FAB, PSEB, USF,ICT R&D Fund and PTCL. PTA (Pakistan Telecom Authority) Regulates the establishment, operation and maintenance of telecommunication systems Responsible for promoting & development of telecommunication systems and services FAB (Frequency Allocation Board) Allocates radio frequency spectrum to the Government, providers of telecommunication services, radio and television broadcasting operators, public and private wireless operators and others Separate from, but reporting to (at least in theory) PTA. NTC (National telecommunication Corporation) Limited mandate to provide services to the Government SCO (Special Communications Organization) Limited mandate to provide services to Azad Kashmir 52

53 53 UMTS in Pakistani Scenario At least two licenses were committed for auction in IM issued by MoIT. (Each of 10 MHz) PTA and FAB has to clear the 3G spectrum in 2.1GHz band by the end of Delays due to: Reluctance of Operators Economic and Political Conditions of Pakistan Declining ARPU Un-identified Killer Application

54 Question & Answers

55 55 References WCDMA(UMTS) Overview, QUALCOMM UMTS University. WCDMA for UMTS: Radio Access for Third Generation Mobile Communications, H. Holma and A. Toskla, Second Edition, John Wiley and Sons, HSDPA: Protocol and Physical Layer, Qualcomm UMTS University. HSUPA:Protocol and Physical Layer, Qualcomm UMTS University. LTE Technical Overview (whitepaper) Motorola UMTS Forum ( UMTS World (

56 Thank You Shariq Yasin