The Latest Development in 3G Mobile   Prof. OnChing Yue  余安正教授 , MobiTeC Director
Brief CV of OnChing Yue <ul><li>1977: PhD in ECE, UC San Diego </li></ul><ul><li>1977-2003: </li></ul><ul><ul><li>Bell Tel...
Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present ...
Wireless Research at MobiTeC   Internet/Intranet/ISP WLAN Access Point HLR+ 2.5/3G/4G Packet Core Network DNS & DHCP WPAN ...
QoS Laboratory <ul><li>Field Measurement </li></ul><ul><ul><li>Mobile testset software and TEMS </li></ul></ul><ul><ul><li...
Handover occurrence points
Wireless Data Services Emulator Platform Server Core Network BSC/BTS Mobile 1 Radio Access Network <ul><li>Delay (Queuing ...
Wireless Sensor Network for Health-care Applications
Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present ...
3G phones have finally arrived in volume!
First Mobile Radio Telephone (1924)
Cellular Mobile Telephony <ul><li>Frequency modulation </li></ul><ul><li>Cellular concept - Bell Labs (1947 & 1960) </li><...
GSM – Time Division Multiple Access
IS-95 – Code Division Multiple Access <ul><li>Spread spectrum modulation </li></ul><ul><ul><li>originally developed for th...
Multi-Access Radio Techniques
Cellular Technology Evolution
Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present ...
3G Vision <ul><li>Universal global roaming </li></ul><ul><li>Multimedia (voice, data & video) </li></ul><ul><li>Increased ...
International Mobile Telecommunication – 2000 <ul><li>IMT-MC (Multi Carrier) </li></ul><ul><ul><li>cdma2000 1xEV-DO (1.228...
Evolution of cdma2000 Source: LG Electronics
TD-SCDMA physical channel format 10 msec 5 msec 675us Frame #i Subframe #1 Subframe #0 Guard Period Data 352 chips Midambl...
TD-SCDMA Data Rates 675us/TS x 1.28Mcps=172.8Kcps or 10.8Kcps per code Modulation:  QPSK or 8-PSK;  Voice data rate:  8kbi...
UMTS – Main Features <ul><li>New radio access technology using new spectrum  </li></ul><ul><ul><li>spectrum allocation aro...
Transmission Format UTRA FDD <ul><li>bit level QPSK (downlink) or dual-channel BPSK (uplink) </li></ul><ul><li>modulation ...
Example of 64-Kbps Transmission in the Uplink
Data flow for packet data (uplink)
3G Traffic Classes <ul><li>Conversational  – real time traffic flows, greatest delay sensitivity, e.g. voice or video tele...
3G Traffic Class QoS Requirements low low medium high Precedence N/A N/A 0-2Mb/s 0-2Mb/s Peak bit rate <10^-9 <10^-9 10^-6...
QoS Requirement for Web Browsing A User Data  Session Log on Session begins 1st Packet Call Inactivity timer expired,call ...
Data Connections in 3G Network Internet/Intranet/ISP Node B HLR+ Radio Access Network PSTN/ISDN Core Network Circuit & Pac...
UMTS Protocol Architecture
PDP context activation Mobile Base SGSN GGSN RNC RRC connection established Activate PDP context request Assign radio acce...
Each PDP context has a QoS profile <ul><li>The QoS profile defines the quality of service expected in terms of the followi...
3G Traffic Class QoS Requirements low low medium high Precedence N/A N/A 0-2Mb/s 0-2Mb/s Peak bit rate <10^-9 <10^-9 10^-6...
3G-324M Video Services <ul><li>Initial mobile video service without IP multimedia infrastructure </li></ul><ul><li>Leverag...
Network Architecture for 3G-324M Services
Gateway: 3G-324M to Video over IP
Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present ...
Release 5 (March 2002) Summary <ul><li>Main features: </li></ul><ul><li>HSDPA - High Speed Downlink Packet Access </li></u...
UMTS R99 Evolution to HSDPA Hybrid ARQ Dynamic Scheduling Fast Cell  Selection MIMO (BLAST) Adaptive Modulation & Coding H...
HSDPA ( up to 14 Mbps peak throughput) <ul><li>High-Speed Downlink Shared CHannel (HS-DSCH) </li></ul><ul><li>Fast schedul...
HSDPA System Architecture
HS-DSCH characteristics <ul><li>Provision of  8 –10 Mbps peak user data rate by </li></ul><ul><ul><li>Fast selection of mo...
Adaptive Modulation and Coding Modulation and Coding Schemes (Example) 64QAM,  R=0.75  (12.96 Mbps) 64QAM,  R=0.50  (8.64 ...
Scheduling Strategies time time time C/I C/I C/I Example: Max C/I scheduling served mobile Transmission time interval  3 s...
Capacity Improvement of HSDPA
IP Multimedia Subsystem <ul><li>The IMS provides the control of applications, control of sessions, and media conversion. <...
IP Multimedia Subsystem and Connected Networks
Cellular Technology Evolution
VoIP over 3G Performance Objectives <ul><li>Little or no degradation in  voice quality </li></ul><ul><ul><li>comparison po...
Technology Solutions for VoIP <ul><li>At the application </li></ul><ul><ul><li>header compression/stripping (ROHC, LLAROHC...
Technology Solutions for VoIP <ul><li>Forward link </li></ul><ul><ul><li>support for low bit rate users </li></ul></ul><ul...
Potential Performance of VoIP over 3G Source: Lucent Technologies
Capacity Improvement of 3G+ Source: Lucent Technologies
Potential Wireless Internet Applications <ul><li>Personalized content tailored to   end  customers </li></ul><ul><ul><li>L...
Communications Network Transformation  Buildings Computers People Homes Appliances Transportation Vehicles & Systems Vendi...
from Dresdner Kleinwort Wasserstein (DrKW) Equity Research
Release 6 and beyond <ul><li>Wireless LAN/UMTS interworking </li></ul><ul><li>Presence </li></ul><ul><li>Speech recognitio...
What is Beyond 3G (B3G)?
The Latest Development in 3G Mobile <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G...
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  • Link adaptation schemes: Goal: efficient allocation of transmit resources to compensate for channel variations Examples: power control and AMC
  • Scheduling strategy determines overall system behaviour. Mixed scheduling strategies can be implemented.
  • 9 Key points: - Tomorrow’s question: how many devices need to be networked? - Wireless access provides convenience and portability; wired access serves high bandwidth and entertainment needs. - Converged networks (wireless/wireline) simplify end users’ communications needs.
  • Presentation [2.48MB]

    1. 1. The Latest Development in 3G Mobile Prof. OnChing Yue 余安正教授 , MobiTeC Director
    2. 2. Brief CV of OnChing Yue <ul><li>1977: PhD in ECE, UC San Diego </li></ul><ul><li>1977-2003: </li></ul><ul><ul><li>Bell Telephone Laboratories (Wireless Research) </li></ul></ul><ul><ul><li>AT&T Bell Laboratories (Networking Research) </li></ul></ul><ul><ul><li>Lucent Technologies Bell Laboratories (Director) </li></ul></ul><ul><ul><li>52 published papers, 18 patents granted </li></ul></ul><ul><li>2003: Chinese University of Hong Kong </li></ul><ul><ul><li>Visiting Professor, Information Engineering Dept. </li></ul></ul><ul><ul><li>Director, Mobile Technologies Centre (MobiTeC) </li></ul></ul><ul><ul><li>Director, Work Study Programme </li></ul></ul>
    3. 3. Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present - What does 3G offer now? </li></ul><ul><li>Future - What is next for 3G? </li></ul>
    4. 4. Wireless Research at MobiTeC Internet/Intranet/ISP WLAN Access Point HLR+ 2.5/3G/4G Packet Core Network DNS & DHCP WPAN Access Point Node B RNC 3G-GGSN 3G-SGSN APC WLAN Client A Sensor Network Wireless PAN WLAN Client B Wireless LAN Radio Access Network <ul><li>End-to-End 3G Data Applications QoS </li></ul><ul><li>Multimedia Applications over WLAN </li></ul><ul><li>Sensors for Healthcare and Logistics </li></ul>Wireless MAN IP firewall ATM IP ATM IP
    5. 5. QoS Laboratory <ul><li>Field Measurement </li></ul><ul><ul><li>Mobile testset software and TEMS </li></ul></ul><ul><ul><li>RF mapping of 140 802.11 nodes in 2 buildings </li></ul></ul><ul><ul><li>VoIP roaming performance over WLAN </li></ul></ul><ul><li>Simulation </li></ul><ul><ul><li>ns2 simulation model of cellular/WLAN network </li></ul></ul><ul><ul><li>TCP over GPRS/3G with handovers </li></ul></ul><ul><li>Emulation </li></ul><ul><ul><li>End-to-end network with linux PCs as network nodes </li></ul></ul><ul><ul><li>“ Cross layer” algorithm with actual multimedia traffic </li></ul></ul>
    6. 6. Handover occurrence points
    7. 7. Wireless Data Services Emulator Platform Server Core Network BSC/BTS Mobile 1 Radio Access Network <ul><li>Delay (Queuing + Processing) in Core Network </li></ul><ul><li>Loss (Buffer Overflow) in Core Network </li></ul><ul><li>Delay (Queuing + Processing) in RAN </li></ul><ul><li>Loss (Buffer Overflow) in RAN </li></ul><ul><li>Delay (Channel Setup + Propagation + Frame Retransmission) in RF Channel </li></ul><ul><li>Loss (Collision, Interference, Handoff) in RF Channel </li></ul><ul><li>Segmentation of IP packets into RLC frames, depending on the current RF Channel transmission bit rate </li></ul><ul><li>RF Channel transmission bit rate can be varied during an on-going transmission, depending on channel conditions </li></ul><ul><li>Frame retransmission if original frame is lost </li></ul>Mobile 2 GGSN/SGSN
    8. 8. Wireless Sensor Network for Health-care Applications
    9. 9. Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present - What does 3G offer now? </li></ul><ul><li>Future - What is next for 3G? </li></ul>
    10. 10. 3G phones have finally arrived in volume!
    11. 11. First Mobile Radio Telephone (1924)
    12. 12. Cellular Mobile Telephony <ul><li>Frequency modulation </li></ul><ul><li>Cellular concept - Bell Labs (1947 & 1960) </li></ul><ul><li>Frequency reuse - typically every 7 cells </li></ul><ul><li>Handover as caller moves </li></ul><ul><li>Modified switch - HLR, paging, handovers </li></ul><ul><li>Sectorized antennas improve reuse </li></ul>
    13. 13. GSM – Time Division Multiple Access
    14. 14. IS-95 – Code Division Multiple Access <ul><li>Spread spectrum modulation </li></ul><ul><ul><li>originally developed for the military </li></ul></ul><ul><ul><li>resists jamming and multipath interference </li></ul></ul><ul><li>All users share same (large) block of spectrum </li></ul><ul><ul><li>one for one frequency reuse </li></ul></ul><ul><ul><li>soft handovers possible </li></ul></ul><ul><li>All 3G radio standards are based on CDMA </li></ul><ul><ul><li>CDMA2000, W-CDMA and TD-SCDMA </li></ul></ul>
    15. 15. Multi-Access Radio Techniques
    16. 16. Cellular Technology Evolution
    17. 17. Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present - What does 3G offer now? </li></ul><ul><ul><li>Three different kinds of 3G </li></ul></ul><ul><ul><li>QoS support in W-CDMA </li></ul></ul><ul><ul><li>3G-324M video services </li></ul></ul><ul><li>Future - What is next for 3G? </li></ul>
    18. 18. 3G Vision <ul><li>Universal global roaming </li></ul><ul><li>Multimedia (voice, data & video) </li></ul><ul><li>Increased data rates </li></ul><ul><ul><li>384 Kbps while moving </li></ul></ul><ul><ul><li>2 Mbps when stationary at specific locations </li></ul></ul><ul><li>Increased capacity (more spectrally efficient) </li></ul><ul><li>IP architecture </li></ul>
    19. 19. International Mobile Telecommunication – 2000 <ul><li>IMT-MC (Multi Carrier) </li></ul><ul><ul><li>cdma2000 1xEV-DO (1.228 Mcps, paired 1.25 MHz bandwidth) </li></ul></ul><ul><li>IMT-TD (Time Division) </li></ul><ul><ul><li>TD-SCDMA (1.28 Mcps, unpaired 1.6 MHz bandwidth) </li></ul></ul><ul><li>IMT-DS (Direct Spread) </li></ul><ul><ul><li>W-CDMA (3.84 Mcps, paired 5 MHz bandwidth) </li></ul></ul>
    20. 20. Evolution of cdma2000 Source: LG Electronics
    21. 21. TD-SCDMA physical channel format 10 msec 5 msec 675us Frame #i Subframe #1 Subframe #0 Guard Period Data 352 chips Midamble 144 chips Data 352 chips DL DL DL DL UL UL DL
    22. 22. TD-SCDMA Data Rates 675us/TS x 1.28Mcps=172.8Kcps or 10.8Kcps per code Modulation: QPSK or 8-PSK; Voice data rate: 8kbit/s Max. (SF=1) gross data rate per TS: 281.6Kb/s Max. circuit or packet switched rate: 2.048Mb/s
    23. 23. UMTS – Main Features <ul><li>New radio access technology using new spectrum </li></ul><ul><ul><li>spectrum allocation around 2 GHz </li></ul></ul><ul><ul><li>two radio transmission modes </li></ul></ul><ul><ul><ul><li>Frequency Division Duplex (FDD): 2  60 MHz </li></ul></ul></ul><ul><ul><ul><li>Time Division Duplex (TDD): 15 + 20 MHz </li></ul></ul></ul><ul><ul><li>Wideband Code Division Multiple Access (WCDMA) </li></ul></ul><ul><ul><li>Chip rate 3.84 Mcps  Channel bandwidth 4.4 – 5 MHz </li></ul></ul><ul><li>Built on GSM Core Network technology </li></ul><ul><li>Support of user data rates 0 – 2 Mbps </li></ul><ul><li>Multi-call, multimedia capability </li></ul>
    24. 24. Transmission Format UTRA FDD <ul><li>bit level QPSK (downlink) or dual-channel BPSK (uplink) </li></ul><ul><li>modulation rates 15 ... 960 Ksps for spreading factors 256 ... 4 </li></ul>1 radio frame (10 ms), 15*2560 chips (3.84 Mcps) Slot i Slot 1 Slot 2 Slot 15 time frequency 5 MHz 5 MHz 5 MHz 5 MHz Macrocell layers Microcell layer Duplex distance, e.g. 190 MHz Uplink Downlink
    25. 25. Example of 64-Kbps Transmission in the Uplink
    26. 26. Data flow for packet data (uplink)
    27. 27. 3G Traffic Classes <ul><li>Conversational – real time traffic flows, greatest delay sensitivity, e.g. voice or video telephony. </li></ul><ul><li>Streaming - real time traffic flows, medium delay sensitivity, e.g. one-way streaming media. </li></ul><ul><li>Interactive - used for interactive but delay tolerant traffic flows which require smaller data error rates, e.g. web browsing or chat. </li></ul><ul><li>Background – used for non-urgent, delay tolerant traffic flows that require smaller data error rates, e.g. large file download or email retrieval. </li></ul>
    28. 28. 3G Traffic Class QoS Requirements low low medium high Precedence N/A N/A 0-2Mb/s 0-2Mb/s Peak bit rate <10^-9 <10^-9 10^-6, -7, -8 10^-3, -4, -5 BER N/A <2 sec <1sec 100, 200, 400 msec Delay Dynamic ACK ARQ Dynamic ACK ARQ Dynamic unACK ARQ Guaranteed no ARQ Reliability control File download Web browsing Audio/video streaming Audio/video conference Applications Background NRT Interactive NRT Streaming RT Conversational RT
    29. 29. QoS Requirement for Web Browsing A User Data Session Log on Session begins 1st Packet Call Inactivity timer expired,call tear down, resources released Data Transaction inter-arrival time Log out Session Ends Data Transactions User Thinking Time 2nd Packet Call Nth Packet Call Inactivity timer expired,call tear down, resources released Inactivity timer period Call Setup Call Setup Call Setup Inactivity timer period User tears down the call Packets Packet inter-arrival time Uplink Downlink Uplink Downlink Downlink Downlink Packet Data Calls Dormant mode
    30. 30. Data Connections in 3G Network Internet/Intranet/ISP Node B HLR+ Radio Access Network PSTN/ISDN Core Network Circuit & Packet DNS & DHCP 3G MSC Node B Node B RNC Iur Iub Iub Iub Iu Iu 3G-GGSN UCN UTRAN SNMP OAM 3G-SGSN RNC IP firewall ATM IP ATM IP
    31. 31. UMTS Protocol Architecture
    32. 32. PDP context activation Mobile Base SGSN GGSN RNC RRC connection established Activate PDP context request Assign radio access bearer GTP established Data transfer PDP context established
    33. 33. Each PDP context has a QoS profile <ul><li>The QoS profile defines the quality of service expected in terms of the following attributes: </li></ul><ul><ul><li>Precedence class. </li></ul></ul><ul><ul><li>Delay class. </li></ul></ul><ul><ul><li>Reliability class. </li></ul></ul><ul><ul><li>Peak throughput class. </li></ul></ul><ul><ul><li>Mean throughput class. </li></ul></ul>
    34. 34. 3G Traffic Class QoS Requirements low low medium high Precedence N/A N/A 0-2Mb/s 0-2Mb/s Peak bit rate <10^-9 <10^-9 10^-6, -7, -8 10^-3, -4, -5 BER N/A <2 sec <1sec 100, 200, 400 msec Delay Dynamic ACK ARQ Dynamic ACK ARQ Dynamic unACK ARQ Guaranteed no ARQ Reliability control File download Web browsing Audio/video streaming Audio/video conference Applications Background NRT Interactive NRT Streaming RT Conversational RT
    35. 35. 3G-324M Video Services <ul><li>Initial mobile video service without IP multimedia infrastructure </li></ul><ul><li>Leverage high speed circuit-switched data paths </li></ul><ul><ul><li>64 Kbps H.324 video structure </li></ul></ul><ul><ul><li>MPEG 4 video coding </li></ul></ul><ul><ul><li>AMR audio coding </li></ul></ul><ul><li>Supports live video conversations and streaming video </li></ul><ul><ul><li>Mobile to Mobile </li></ul></ul><ul><ul><li>Mobile to Internet or ISDN with gateways </li></ul></ul>
    36. 36. Network Architecture for 3G-324M Services
    37. 37. Gateway: 3G-324M to Video over IP
    38. 38. Outline <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present - What does 3G offer now? </li></ul><ul><li>Future - What is next for 3G? </li></ul><ul><ul><li>HSDPA and IP-based Multimedia </li></ul></ul><ul><ul><li>VoIP over cellular </li></ul></ul><ul><ul><li>3G+, B3G, … </li></ul></ul>
    39. 39. Release 5 (March 2002) Summary <ul><li>Main features: </li></ul><ul><li>HSDPA - High Speed Downlink Packet Access </li></ul><ul><ul><li>Data only, downlink speeds of up to 10Mbit/s </li></ul></ul><ul><ul><li>Included in ITU-R update of M.1457 </li></ul></ul><ul><li>IMS - IP-based Multimedia Services </li></ul><ul><ul><li>All the core network elements for multimedia services </li></ul></ul><ul><ul><li>Based on SIP (from IETF) and PS bearers </li></ul></ul><ul><li>And much more! </li></ul><ul><ul><li>Wideband AMR codec </li></ul></ul><ul><ul><li>End-to-end QoS </li></ul></ul><ul><ul><li>Enhancements to messaging, security, etc… </li></ul></ul>
    40. 40. UMTS R99 Evolution to HSDPA Hybrid ARQ Dynamic Scheduling Fast Cell Selection MIMO (BLAST) Adaptive Modulation & Coding HSDPA Release 5 HSDPA Release 6 Enhanced Channel Structure Release 99 DSCH 2.048Mbps Packet 10.8Mbps Packet 21.6 Mbps Packet HS-DSCH HS-DSCH Transmit Diversity Enhancements 2002 view
    41. 41. HSDPA ( up to 14 Mbps peak throughput) <ul><li>High-Speed Downlink Shared CHannel (HS-DSCH) </li></ul><ul><li>Fast scheduling </li></ul><ul><li>Fast Retransmissions and H-ARQ </li></ul><ul><li>Channel Quality Feedback </li></ul><ul><li>Adaptive modulation and coding </li></ul><ul><li>MIMO </li></ul>
    42. 42. HSDPA System Architecture
    43. 43. HS-DSCH characteristics <ul><li>Provision of 8 –10 Mbps peak user data rate by </li></ul><ul><ul><li>Fast selection of modulation and coding scheme depending on channel conditions (no fast power control) </li></ul></ul><ul><ul><li>Short transmission time interval (2 ms) </li></ul></ul><ul><ul><li>Fast hybrid ARQ (incremental redundancy and/or Chase combining) </li></ul></ul><ul><ul><li>Fast scheduling </li></ul></ul><ul><ul><li>Fast cell selection/handover </li></ul></ul>dedicated channels HS-DSCH shared control channels dedicated channels
    44. 44. Adaptive Modulation and Coding Modulation and Coding Schemes (Example) 64QAM, R=0.75 (12.96 Mbps) 64QAM, R=0.50 (8.64 Mbps) 16QAM, R=0.63 (7.20 Mbps) 16QAM, R=0.38 (4.32 Mbps) QPSK, R=0.50 (2.88 Mbps) QPSK, R=0.25 (1.44 Mbps) for 12 codes (of 16) C/I time C/I FER 1 0.1 0.01
    45. 45. Scheduling Strategies time time time C/I C/I C/I Example: Max C/I scheduling served mobile Transmission time interval 3 slots (2 ms)
    46. 46. Capacity Improvement of HSDPA
    47. 47. IP Multimedia Subsystem <ul><li>The IMS provides the control of applications, control of sessions, and media conversion. </li></ul><ul><ul><li>session control services including subscription, registration, routing and roaming </li></ul></ul><ul><ul><li>combination of several different media bearer per session </li></ul></ul><ul><ul><li>central service based charging </li></ul></ul><ul><ul><li>quality of service support </li></ul></ul><ul><li>New applications </li></ul><ul><ul><li>Push-to-Talk over Cellular (PoC), </li></ul></ul><ul><ul><li>Presence and Instant Messaging </li></ul></ul><ul><ul><li>Voice and Video over IP. </li></ul></ul>
    48. 48. IP Multimedia Subsystem and Connected Networks
    49. 49. Cellular Technology Evolution
    50. 50. VoIP over 3G Performance Objectives <ul><li>Little or no degradation in voice quality </li></ul><ul><ul><li>comparison points are EVRC, AMR, EFR, SMV, etc </li></ul></ul><ul><ul><li>error tolerant, toll quality, low delay </li></ul></ul><ul><li>End-to-end delay similar to circuit switched voice </li></ul><ul><ul><li>For Mobile to PSTN and PSTN to Mobile scenarios, 3G1x CS Voice delay is currently ~135 msec </li></ul></ul><ul><ul><li>For Mobile to Mobile scenario, 3G1x CS Voice delay is currently ~270 msec </li></ul></ul><ul><li>Radio interface efficiency and network capacity comparable to circuit switched voices </li></ul><ul><ul><li>current 3G1x CS voice is ~ 26 Erlangs/sector-carrier, UMTS is ~3 times that number </li></ul></ul><ul><li>Coverage, handoffs - equivalent to CS voice </li></ul>
    51. 51. Technology Solutions for VoIP <ul><li>At the application </li></ul><ul><ul><li>header compression/stripping (ROHC, LLAROHC) </li></ul></ul><ul><ul><li>Frame aggregation </li></ul></ul><ul><ul><li>making the vocoders more VoIP friendly </li></ul></ul><ul><ul><ul><li>Adaptive Jitter Buffering to Control Delay </li></ul></ul></ul><ul><ul><ul><li>Speech Coder Resynchronization to Improve Speech Quality and Reduce Delay </li></ul></ul></ul>
    52. 52. Technology Solutions for VoIP <ul><li>Forward link </li></ul><ul><ul><li>support for low bit rate users </li></ul></ul><ul><ul><li>support for QoS </li></ul></ul><ul><li>Reverse link </li></ul><ul><ul><li>reduced latency and increased capacity </li></ul></ul><ul><ul><li>QoS </li></ul></ul><ul><li>Radio Access Network </li></ul><ul><ul><li>New signaling mechanism to distinguish VoIP packets from regular data packets </li></ul></ul><ul><li>Handoff </li></ul><ul><ul><li>New signaling and state migration techniques to support “make before break” </li></ul></ul>
    53. 53. Potential Performance of VoIP over 3G Source: Lucent Technologies
    54. 54. Capacity Improvement of 3G+ Source: Lucent Technologies
    55. 55. Potential Wireless Internet Applications <ul><li>Personalized content tailored to end customers </li></ul><ul><ul><li>Localized Information </li></ul></ul><ul><ul><li>Personalized ads based on users preferences </li></ul></ul><ul><ul><li>Chat Groups </li></ul></ul><ul><li>Messaging </li></ul><ul><ul><li>Email/Video mail/Voice Mail </li></ul></ul><ul><ul><li>Chat Group </li></ul></ul><ul><ul><li>Wireless Instant Messaging </li></ul></ul><ul><ul><li>Post Cards </li></ul></ul><ul><li>Electronic commerce </li></ul><ul><ul><li>“ Push” special offers to device </li></ul></ul><ul><ul><li>Make offer due to proximity/online presence </li></ul></ul><ul><li>E-Banking </li></ul><ul><ul><li>Build on Phone / Web Banking </li></ul></ul><ul><ul><li>Technology </li></ul></ul><ul><li>Entertainment </li></ul><ul><ul><li>Games </li></ul></ul><ul><ul><li>Music </li></ul></ul><ul><ul><li>Classifieds/Personals </li></ul></ul><ul><ul><li>Museum/Sights </li></ul></ul><ul><ul><li>Night Life </li></ul></ul><ul><li>Total Vehicle Communication </li></ul><ul><ul><li>Voice, Data (servicing / location / telematics) </li></ul></ul><ul><ul><li>Technology Drivers </li></ul></ul>
    56. 56. Communications Network Transformation Buildings Computers People Homes Appliances Transportation Vehicles & Systems Vending Machines <ul><li>Multiple Connections per Person </li></ul><ul><li>Networking Embedded in Household and Business Devices </li></ul><ul><li>Full Time, “Always On” Connectivity, At Home, At Work, and On the Go: </li></ul><ul><ul><li>Wireline: Fixed Broadband for Business, Entertainment & High End Applications </li></ul></ul><ul><ul><li>Wireless: Mobility for Convenience & Portability </li></ul></ul><ul><ul><li>Converged Services available via multiple forms of access. </li></ul></ul>Intelligent Subscriber Devices $ . . . People to People People to Things Things to Things
    57. 57. from Dresdner Kleinwort Wasserstein (DrKW) Equity Research
    58. 58. Release 6 and beyond <ul><li>Wireless LAN/UMTS interworking </li></ul><ul><li>Presence </li></ul><ul><li>Speech recognition and speech enabled services </li></ul><ul><li>IMS &quot;Phase 2&quot; (incl. IMS Messaging, Conferencing, Group Management) </li></ul><ul><li>Use of UTRA in other spectrum arrangements </li></ul><ul><li>Faster uplink </li></ul><ul><li>Push to talk over Cellular </li></ul><ul><li>New radio modulation techniques </li></ul><ul><li>Multimedia Broadcast/Multicast Service (MBMS) </li></ul>
    59. 59. What is Beyond 3G (B3G)?
    60. 60. The Latest Development in 3G Mobile <ul><li>Brief Introduction about MobiTeC </li></ul><ul><li>Past - How did we get to 3G? </li></ul><ul><li>Present - What does 3G offer now? </li></ul><ul><li>Future - What is next for 3G? </li></ul>Thank you!

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