pdf_gross.gifHSDPA vs. WIMAX – the Contest

backtotop.gifThe Top-Level View on HSDPA and WIMAX

  • Overview
    HSDPA, WIMAX, Protocol Stacks, Network Architecture, targeted Applications, Implementation Strategies for both Technologies
  • Performance Figures
    HSDPA, WIMAX (focus is on 802.16d/e (<-> OFDMA-PHY)), Spectrum Efficiency, Options for Cell Change and Handover, Performance Issues in case of roaming Clients

backtotop.gifThe Environment of HSDPA and WIMAX

  • Network Architecture
    Architectural Requirements of WIMAX and HSDPA, Consideration of the Client Devices, Upgradeability in case of HSDPA, Comparison of the two Network Architectures, Network Evolution
  • The Physical Resource
    Frequency Licensing Situation for WIMAX, Comparison with the Situation in UTRA-Networks
  • Network Planning and Service Setup
    HSDPA, WIMAX
  • Conclusions …

backtotop.gifComparison of the two MAC-Layers

  • How to get there
    Initialization of the HSDPA-Mode, Network Entry in case of WIMAX (upon return from idle mode)
  • Fast Resource Scheduling in HSDPA
    short TTI with 3 subframes, H-RNTI, read channel allocation and HARQ-info, MAC-hs sublayer
  • Fast Resource Scheduling in WIMAX
    Frame Duration, Subframes, Broadcast Portion and DIUC / UIUC
  • QoS-Issues
    Reviewing the QoS-Concept of HSDPA (<-> UTRA-FDD) and WIMAX, Real-time capability of both technologies, Time to setup HSDPA-mode and WIMAX-network entry.
  • Conclusions …

backtotop.gifComparison of the two Physical Layers

  • Supported Modulation Schemes
    HSDPA (<-> 16-QAM, Q-PSK), WIMAX (OFDMA-PHY) (<-> 64-QAM, 16-QAM, QPSK)
  • Spectrum Efficiency of WIMAX and HSDPA
  • FEC and BEC
    HARQ-options in WIMAX, HARQ-options in HSDPA, Feedback / Measurement Provision to the Network in both cases
  • Other Issues
    Resource Scaling in HSDPA (<-> Multicode Operation), Resource Scaling in WIMAX (<-> Subcarrier Allocation), Analyzing the Soft Handover Option in WIMAX OFDMA
  • Conclusions …
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