DIFF Subgroup
H04B 17/30 of propagation channels
Introduced: January 2015
Full Title
Full titles differ between systems:
IPC:
Monitoring; Testing > of propagation channels
CPC:
Monitoring; Testing (of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07) > of propagation channels
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
IPC defines codes here since 2015.
Child Classifications
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- H04B 17/309 Measuring or estimating channel quality parameters since 2015 +2 CPC IPC+CPC Available in IPC and CPC
- H04B 17/382 for resource allocation, admission control or handover since 2015 IPC+CPC Available in IPC and CPC