DIFF Subgroup
H04W 52/38 TPC being performed in particular situations
Introduced: January 2009
Full Title
Power management > Transmission power control [TPC] > TPC being performed in particular situations
Of 8 combined children, 6 exist in both systems.
2 codes are CPC-only extensions.
IPC defines codes here since 2009.
Child Classifications
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- H04W 52/42 in systems with time, space, frequency or polarisation diversity since 2009 IPC+CPC Available in IPC and CPC
- H04W 52/44 in connection with interruption of transmission since 2009 IPC+CPC Available in IPC and CPC
- H04W 52/46 in multi-hop networks, e.g. wireless relay networks since 2009 IPC+CPC Available in IPC and CPC
- H04W 52/48 during retransmission after error or non-acknowledgment since 2009 IPC+CPC Available in IPC and CPC
- H04W 52/50 at the moment of starting communication in a multiple access environment since 2009 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H04,2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327
Top Applicants (CPC)
Class H04,2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498