H04L 5/02
Channels characterised by the type of signal
H04L5/02 (Channels characterised by the type of signal) appears on 3,074 US grants and 2,889 published applications in this corpus.
Search patents in H04L- Granted patents
- 3,074
- Published applications
- 2,889
- Assignees
- 829
- Inventors
- 4,509
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 24 | 0 |
| 1994 | 15 | 0 |
| 1995 | 16 | 0 |
| 1996 | 29 | 0 |
| 1997 | 25 | 0 |
| 1998 | 46 | 0 |
| 1999 | 55 | 0 |
| 2000 | 53 | 0 |
| 2001 | 68 | 31 |
| 2002 | 91 | 145 |
| 2003 | 77 | 98 |
| 2004 | 76 | 119 |
| 2005 | 70 | 161 |
| 2006 | 104 | 164 |
| 2007 | 78 | 264 |
| 2008 | 136 | 204 |
| 2009 | 116 | 111 |
| 2010 | 160 | 129 |
| 2011 | 154 | 76 |
| 2012 | 144 | 78 |
| 2013 | 124 | 69 |
| 2014 | 119 | 95 |
| 2015 | 119 | 92 |
| 2016 | 81 | 72 |
| 2017 | 73 | 64 |
| 2018 | 57 | 80 |
| 2019 | 91 | 107 |
| 2020 | 98 | 295 |
| 2021 | 150 | 149 |
| 2022 | 203 | 95 |
| 2023 | 134 | 74 |
| 2024 | 120 | 60 |
| 2025 | 55 | 35 |
| 2026 | 12 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 5/023Multiplexing of multicarrier modulation signals1,479
- H04L 5/06The signals being represented by different frequencies1,131
- H04L 5/04The signals being represented by different amplitudes or polarities185
- H04L 5/12The signals being represented by different phase modulations of a single carrier117
Recent patents
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- Systems/methods of dual polarization transmission in cellular communications28 Jul 2026US 12,696,058 B2
- Channel estimation for two-stage sidelink control using sidelink data channel DMRS14 Jul 2026US 12,683,736 B2QUALCOMM Incorporated
- Systems/methods of using dual polarization antennas in cellular communications14 Jul 2026US 12,684,319 B2
- Systems, methods, and devices for electronic spectrum management for identifying open space24 Sep 2026US 2026/0291788 A1Digital Global Systems, Inc.
- Methods and apparatuses for synchronization signal transmission24 Sep 2026US 2026/0292722 A1NEC Corporation
- Method and device for beam management in sidelink communication27 Aug 2026US 2026/0254519 A1Gachon University of Industry-Academic Cooperation Foundation
- Temporal gesture recognition for virtual and augmented reality systems13 Aug 2026US 2026/0237198 A1Meta Platforms Technologies, LLC
- Method for transmitting data in internet of vehicles, terminal device and network device6 Aug 2026US 2026/0230269 A1Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Most cited
By later US patents
- System and method for generating signal waveforms in a CDMA cellular telephone system1,721US 5,103,459 AQUALCOMM Incorporated · 1992
- Determination of a channel estimate of a transmission channel991US 7,561,637 B2Telefonaktiebolaget'l M Ericsson (Publ) · 2009
- Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant683US 5,991,308 ATerayon Communication Systems, Inc. · 1999
- Method for frequency division duplex communications526US 5,933,421 AAT&T Wireless Services, Inc. · 1999
- Apparatus and method for digital data transmission using orthogonal codes473US 6,356,555 B1Terayon Communications Systems, Inc. · 2002