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DIFF Subgroup
H04W 74/0833

Random access procedures, e.g. with 4-step access

Introduced: January 2024

Full Title

Full titles differ between systems:

IPC:

Wireless channel access > Non-scheduled access, e.g. ALOHA > Random access procedures, e.g. with 4-step access

CPC:

Wireless channel access > Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) > Random access procedures, e.g. with 4-step access

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2024.

Child Classifications

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  • H04W 74/0836 with 2-step access since 2024 IPC+CPC Available in IPC and CPC
  • H04W 74/0838 using contention-free random access [CFRA] since 2024 IPC+CPC Available in IPC and CPC