H04L 27/2605
Symbol extensions
Official title: {Symbol extensions, e.g. Zero Tail, Unique Word [UW]}
H04L27/2605 (Symbol extensions) appears on 3,315 US grants and 4,063 published applications in this corpus.
Search patents in H04L- Granted patents
- 3,315
- Published applications
- 4,063
- Assignees
- 523
- Inventors
- 4,097
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 7 |
| 2002 | 6 | 11 |
| 2003 | 11 | 16 |
| 2004 | 6 | 42 |
| 2005 | 11 | 48 |
| 2006 | 19 | 56 |
| 2007 | 21 | 61 |
| 2008 | 33 | 73 |
| 2009 | 40 | 108 |
| 2010 | 49 | 90 |
| 2011 | 76 | 117 |
| 2012 | 107 | 102 |
| 2013 | 126 | 81 |
| 2014 | 119 | 101 |
| 2015 | 124 | 147 |
| 2016 | 129 | 150 |
| 2017 | 135 | 174 |
| 2018 | 139 | 192 |
| 2019 | 212 | 437 |
| 2020 | 317 | 396 |
| 2021 | 317 | 363 |
| 2022 | 316 | 346 |
| 2023 | 363 | 303 |
| 2024 | 284 | 212 |
| 2025 | 231 | 248 |
| 2026 | 106 | 182 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cyclic shift diversity-based communication method, apparatus, and system6 Oct 2026US 12,756,431 B2Huawei Technologies Co., Ltd.
- Signal transmission method and signal reception method of heterogeneous systems sharing frequency band6 Oct 2026US 12,756,613 B2Electronics and Telecommunications Research Institute
- Terminal and radio communication method6 Oct 2026US 12,757,208 B2Ntt Docomo, Inc.
- Sidelink unlicensed (SL-U) gap symbol and cyclic prefix extension (CPE) configuration6 Oct 2026US 12,757,248 B2Apple Inc.
- Transmission configuration for a second signal based on a guard interval linkage with a first signal29 Sep 2026US 12,750,265 B2QUALCOMM Incorporated
- Joint communication and sensing8 Oct 2026US 2026/0309836 A1Telefonaktiebolaget LM Ericsson (publ)
- Joint Communication and Sensing1 Oct 2026US 2026/0304078 A1
- Radio access network (ran) intelligent controller application (rapp)-coordinated time division duplexing (tdd) configuration in open radio access network (o-ran)1 Oct 2026US 2026/0304142 A1Boost SubscriberCo L.L.C.
- Sub-band resource determining method and apparatus, and device1 Oct 2026US 2026/0304401 A1New H3C Technologies Co., Ltd.
- Nested sequence indexing for uplink control information1 Oct 2026US 2026/0304429 A1QUALCOMM Incorporated
Most cited
By later US patents
- Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system227US 6,850,481 B2Nortel Networks Limited · 2005
- Methods and apparatus for WLAN transmission198US 8,724,720 B2Marvell World Trade Ltd. · 2014
- System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design176US 7,548,506 B2Nortel Networks Limited · 2009
- Systems and methods for high rate OFDM communications149US 7,522,514 B2Aware, Inc. · 2009
- Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing143US 5,732,068 AVictor Company of Japan, Ltd. · 1998