H04L 5/16
Half-duplex systems
Official title: Half-duplex systems; Simplex/duplex switching; Transmission of break signals {non-automatically inverting the direction of transmission}
H04L5/16 (Half-duplex systems) appears on 972 US grants and 1,091 published applications in this corpus.
Search patents in H04L- Granted patents
- 972
- Published applications
- 1,091
- Assignees
- 353
- Inventors
- 1,793
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 10 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 3 |
| 2002 | 8 | 24 |
| 2003 | 6 | 13 |
| 2004 | 12 | 19 |
| 2005 | 11 | 11 |
| 2006 | 17 | 16 |
| 2007 | 14 | 7 |
| 2008 | 15 | 14 |
| 2009 | 13 | 11 |
| 2010 | 7 | 17 |
| 2011 | 12 | 21 |
| 2012 | 14 | 16 |
| 2013 | 20 | 32 |
| 2014 | 18 | 40 |
| 2015 | 44 | 58 |
| 2016 | 44 | 76 |
| 2017 | 60 | 71 |
| 2018 | 65 | 65 |
| 2019 | 74 | 61 |
| 2020 | 58 | 58 |
| 2021 | 43 | 67 |
| 2022 | 51 | 97 |
| 2023 | 70 | 96 |
| 2024 | 77 | 90 |
| 2025 | 65 | 65 |
| 2026 | 41 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Anchor and complementary bandwidth parts for full-duplex operations15 Sep 2026US 12,739,870 B2QUALCOMM Incorporated
- Transmission control method under time domain resource collision, and, apparatus, terminal, and readable storage medium8 Sep 2026US 12,732,337 B2Vivo Mobile Communication Co., Ltd.
- Information transmission method, information transmission apparatus, electronic device, and readable storage medium25 Aug 2026US 12,720,498 B2Vivo Mobile Communication Co., Ltd.
- Random access occasion selection for subband full duplex capable devices11 Aug 2026US 12,707,507 B2QUALCOMM Incorporated
- Techniques for user equipment full-duplex operation4 Aug 2026US 12,700,982 B2QUALCOMM Incorporated
- Unused indication of transmission occasions8 Oct 2026US 2026/0313644 A1Panasonic Intellectual Property Corporation of America
- Joint communication and sensing1 Oct 2026US 2026/0299078 A1Telefonaktiebolaget LM Ericsson (publ)
- Methods For SBFD-UE Reporting On Full-Duplex Hard Constraints1 Oct 2026US 2026/0303307 A1MediaTek Singapore Pte. Ltd.
- Method for wireless communication, terminal device, and network device1 Oct 2026US 2026/0304496 A1Quectel Wireless Solutions Co., Ltd.
- Transmission method and omamrc system with a selection strategy during retransmissions taking into account the throughput of the sources and of a single control exchange24 Sep 2026US 2026/0291654 A1
Most cited
By later US patents
- Ensemble modem structure for imperfect transmission media357US 4,679,227 ATelebit Corporation · 1987
- Ensemble modem structure for imperfect transmission media290US 4,731,816 ATelebit Corporation · 1988
- Channel optimization in half duplex communications systems266US 9,001,689 B1Mimosa Networks, Inc. · 2015
- Channel equalization system and method265US 6,904,110 B22005
- Bidirectional point to multipoint network using multicarrier modulation237US 6,091,932 ARegioCom GmbH · 2000