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Simplified X1 Protocol [1]. X1 header always includes both MS/AT ID (RATI:ATI24 or UATI: ATI24) Target node ID (HRPD Sector ID) X1 header has Type indicator (T) T=0: Data Only Data is included T=1: Control Only Control messages are included SFF requirement

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simplified x1 protocol 1
Simplified X1 Protocol [1]
  • X1 header always includes both
    • MS/AT ID (RATI:ATI24 or UATI: ATI24)
    • Target node ID (HRPD Sector ID)
  • X1 header has Type indicator (T)
    • T=0: Data
      • Only Data is included
    • T=1: Control
      • Only Control messages are included
  • SFF requirement
    • Looks up IP address mapping table with MS/AT ID or Target Node ID in X1 header or A23 header,
    • Forwards the packets with new source and destination IP address/port
simplified x1 protocol 2
Simplified X1 Protocol [2]
  • X1 Header
    • T( Type)
      • T=0: Data
      • T=1: Control
    • MS/AT ID Type
      • ‘000’: Reserved
      • ‘001’: HRPD RATI
      • ’010’: HRPD UATI
      • ‘011’: (Reserved for WiMAX MS identifier)
      • ‘100’ - ‘111’: Reserved
    • Target Node ID Type
      • ‘000’: Reserved
      • ‘001’: HRPD AN SectorID
      • ‘011’: (Reserved for WiMAX BS identifier)
      • ‘100’ - ‘111’: Reserved
simplified x1 protocol 3
Simplified X1 Protocol [3]
  • X1 Control Messages
    • X1 Control Message Types
    • Error Notification Message Format
      • Error Cause Values