IPC 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
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- WIRELESS COMMUNICATION NETWORKS
6 direct subcodes
Child Classifications
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- H04W 52/4 during macro-diversity or soft handoff
- H04W 52/42 in systems with time, space, frequency or polarisation diversity
- H04W 52/44 in connection with interruption of transmission
- H04W 52/46 in multi-hop networks, e.g. wireless relay networks
- H04W 52/48 during retransmission after error or non-acknowledgment
- H04W 52/5 at the moment of starting communication in a multiple access environment
Top Applicants
Top 10 applicants by patent filingsfor 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