H04L 25/0216
With estimation of channel length
Official title: {with estimation of channel length}
H04L25/0216 (With estimation of channel length) appears on 293 US grants and 295 published applications in this corpus.
Search patents in H04L- Granted patents
- 293
- Published applications
- 295
- Assignees
- 146
- Inventors
- 630
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 1 | 8 |
| 2003 | 3 | 9 |
| 2004 | 2 | 8 |
| 2005 | 8 | 16 |
| 2006 | 16 | 17 |
| 2007 | 8 | 18 |
| 2008 | 8 | 16 |
| 2009 | 12 | 29 |
| 2010 | 22 | 31 |
| 2011 | 25 | 26 |
| 2012 | 34 | 18 |
| 2013 | 27 | 11 |
| 2014 | 27 | 15 |
| 2015 | 15 | 6 |
| 2016 | 8 | 3 |
| 2017 | 4 | 4 |
| 2018 | 6 | 10 |
| 2019 | 14 | 7 |
| 2020 | 6 | 3 |
| 2021 | 6 | 12 |
| 2022 | 6 | 7 |
| 2023 | 8 | 9 |
| 2024 | 5 | 3 |
| 2025 | 5 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Small delay cyclic delay diversity for data or control channels18 Aug 2026US 12,713,449 B2QUALCOMM Incorporated
- Methods, apparatus, and systems for delay spread measurement, reporting, and cyclic prefix determination11 Aug 2026US 12,706,653 B2InterDigital Patent Holdings, Inc.
- Power delay profile (PDP) similarity measurement and reporting10 Mar 2026US 12,574,781 B2QUALCOMM Incorporated
- Truncated channel state information feedback20 Jan 2026US 12,532,203 B2Intel Corporation
- Transmission method and apparatus, device, and readable storage medium25 Nov 2025US 12,483,302 B2Vivo Mobile Communication Co., Ltd.
- Approaches for Delay Spread Management6 Aug 2026US 2026/0230882 A1
- Transmission method and apparatus, device, and readable storage medium26 Feb 2026US 2026/0058700 A1Vivo Mobile Communication Co., Ltd.
- Radio frequency sensing with channel impulse response12 Feb 2026US 2026/0046168 A1QUALCOMM Incorporated
- Methods for channel parameter estimation27 Nov 2025US 2025/0365179 A1InterDigital Patent Holdings, Inc.
- Techniques for numerology adaptation in the presence of passive multiple-input and multiple-output (p-mimo)11 Sep 2025US 2025/0286767 A1QUALCOMM Incorporated
Most cited
By later US patents
- Software adaptable high performance multicarrier transmission protocol203US 7,418,043 B2Lot 41 Acquisition Foundation, LLC · 2008
- Mobile assisted handoff165US 5,042,082 ATelefonaktiebolaget L M Ericsson · 1991
- Efficient request access for OFDM systems161US 6,657,949 B1Cisco Technology, Inc. · 2003
- Method and device for exploiting transmit diversity in time varying wireless communication systems147US 6,834,043 B1Motorola, Inc. · 2004
- Method and apparatus for time-domain equalization in discrete multitone transceivers144US 6,678,318 B1Agere Systems Inc. · 2004