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ENABLING TECHNOLOGIES FOR 4G NETWORKS

ENABLING TECHNOLOGIES FOR 4G NETWORKS. BY ADEL AL-SHAHRANI 986074 June 3, 2003. OUTLINE. WHY 4G NETWORK LAYER TECHNOLOGIES Network Architectures MIPv6 & HMIPv6 IDMP PHYSICAL LAYER TECHNOLOGIES SDR OFDM M-Ary MC-CDMA CONCLUSION. WHY 4G?. 1G Analogy Communication

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ENABLING TECHNOLOGIES FOR 4G NETWORKS

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  1. ENABLING TECHNOLOGIES FOR 4G NETWORKS BY ADEL AL-SHAHRANI 986074 June 3, 2003

  2. OUTLINE • WHY 4G • NETWORK LAYER TECHNOLOGIES • Network Architectures • MIPv6 & HMIPv6 • IDMP • PHYSICAL LAYER TECHNOLOGIES • SDR • OFDM • M-Ary MC-CDMA • CONCLUSION

  3. WHY 4G? • 1G Analogy Communication • 2G Digital Communication • 3G Multimedia • 4G More Services

  4. NETWORK ARCHTECTURES • OVERLAY NETWORK • COMMON ACCESS NETWORK • MULTIMODE DEVICES

  5. UAP Handoff: network OVERLAY NETWORK

  6. Wireless network Flexible COMMON ACCESS NETWORK

  7. AMPS/CDMA Physical Device MULTIMODE DEVICES

  8. MIPv6 • MN, HA and FA • CoA: FA or DHCPv6 • Optimizing the rout

  9. Criteria MIPv4 MIPv6 Foreign Agent Rely on HA and MN Also, as MIPv4 but it doesn’t require FA to issue CoA (DHCP do it)-> location independent Route optimization Optional for CN and it need to be implemented Allow direction connection from CN and MN but it need binding update to HA Security Use Virtual Private Network outside firewall and allow v4 IPsec VPN As MIPv4 and it allow v6 IPsec VPN Home Agent address discovery -- Using IPv6 anycast by sending binding update to HA anycast address. Why MIPv6? (Cont.)

  10. MIPv6 (Cont.)

  11. HMIPv6 • Reduce handoffs • Mobility Anchor Point (MAP) • Two CoAs

  12. HMIPv6 (Cont.)

  13. Intra-Domain Mobility Management Protocol • Reducing handoffs and paging latency • Gateway foreign agent (GFA) • GCoA & LCoA • Delays: Link layer establishment delay, IP subnet registration and Intradomain update delay • MovementImminent message

  14. Intra-Domain Mobility Management Protocol (Cont.)

  15. Intra-Domain Mobility Management Protocol (Cont.)

  16. SOFTWARE DEFINE RADIO (SDR) • Allocating different frequency BW in different countries • 4G deals with different technologies standards • Infrastructure hardware -downloading software • Development in : • (A/D) and (D/A) converters • (FPGA) and digital signal processing (DSP) • general-purpose programmable devices

  17. SDR (Cont.) • Packet-based switch • Multiple boards in a cPCI • Flexible and scalable

  18. Orthogonal Frequency Division Multiplexing • Multi-Carrier Modulation (MCM) • Supporting • date rate: 54Mbps • real traffic: 22Mbps • Orthogonally • Parallel subcarriers

  19. OFDM (Cont.) • Components: • FFT processors, • System I/O • Serial-parallel converters • Parallel-serial converters • OFDM logic

  20. OFDM (Cont.) • Transmitter • Receiver

  21. OFDM (Cont.) • Types: • Vector OFDM • F-OFDM • W-OFDM • MIMO-OFDM • Issues: Frequency offset , Phase noise and Peak to average power ratio-PAR

  22. M-ary MC-CDMA • Supporting data rate: 20Mbps • Combination of OFDM and CDMA • Advantages: • High data rates • High BW efficiency • Reducing interference and frequency diversity

  23. M-ary MC-CDMA (Transmitter)

  24. M-ary MC-CDMA (Receiver)

  25. CONCLUSION • Using IP: MIP • SDR is the drive technology to 4G • High speed technologies (MCM): OFDM and MC-CDMA • HW developments

  26. THANK YOU

  27. Background: IDMP Paging • Reduce Latency • Paging Areas (PAs) • Area Identifiers (PAIs) • PageSolicitation packet

  28. IDMP Paging (Cont.)

  29. MIMO-OFDM • Technologies: • MIMO • OFDM • Advantages: • reducing the fade margin • double the data rate • frequency diversity • allows different data rates • Performance: Fading Margins, Cell Size and Measured Data Rates

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