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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

  1. QUALCOMM US 97,396
  2. HUAWEI TECHNOLOGIES COMPANY CN 96,502
  3. SAMSUNG ELECTRONICS COMPANY KR 86,981
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
  5. HUAWEI TECHNOLOGIES COMPANY 55,349
  6. LG ELECTRONICS KR 53,649
  7. CANON 33,341
  8. SONY CORPORATION JP 32,761
  9. ZTE CORPORATION CN 32,274
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327