H04W 74/0838
Using contention-free random access [cfra]
Official title: using contention-free random access [CFRA]
H04W74/0838 (Using contention-free random access [cfra]) appears on 2,678 US grants and 3,567 published applications in this corpus.
Search patents in H04W- Granted patents
- 2,678
- Published applications
- 3,567
- Assignees
- 212
- Inventors
- 2,160
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 5 |
| 2009 | 0 | 14 |
| 2010 | 2 | 32 |
| 2011 | 9 | 32 |
| 2012 | 9 | 51 |
| 2013 | 22 | 51 |
| 2014 | 44 | 71 |
| 2015 | 46 | 96 |
| 2016 | 83 | 127 |
| 2017 | 95 | 126 |
| 2018 | 113 | 194 |
| 2019 | 147 | 321 |
| 2020 | 229 | 427 |
| 2021 | 291 | 474 |
| 2022 | 326 | 497 |
| 2023 | 355 | 427 |
| 2024 | 396 | 261 |
| 2025 | 358 | 222 |
| 2026 | 149 | 136 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Indication for preamble transmission after beam switch6 Oct 2026US 12,757,083 B2Nokia Technologies Oy
- Efficient signalling of features combination for random access channel partitioning6 Oct 2026US 12,757,252 B2Nokia Technologies Oy
- Methods for PRACH in higher frequencies6 Oct 2026US 12,757,254 B2InterDigital Patent Holdings, Inc.
- Methods and apparatuses for physical random access channel (PRACH) repetition29 Sep 2026US 12,750,890 B2Lenovo (Beijing) Limited
- Time offset maintenance for nonterrestrial network (NTN)22 Sep 2026US 12,744,589 B2Apple Inc.
- Exposure Detection and Reporting For Wireless Communications8 Oct 2026US 2026/0312612 A1Comcast Cable Communications, LLC
- Beam Failure Detection and Recovery for Deactivated Secondary Cell Group (SCG)8 Oct 2026US 2026/0312665 A1
- Method and apparatus for power control in random access procedure8 Oct 2026US 2026/0313561 A1Telefonaktiebolaget LM Ericsson (publ)
- Bandwidth part switching methods and apparatus for wireless devices8 Oct 2026US 2026/0313682 A1Toyota Jidosha Kabushiki Kaisha
- Method and device for transmitting or receiving preamble for random access during handover in wireless communication system8 Oct 2026US 2026/0313714 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Wireless mesh network158US 11,206,549 B1Verana Networks, Inc. · 2021
- Transmit power control for physical random access channels136US 9,008,050 B2Panasonic Intellectual Property Corporation of America · 2015
- Random access channel response handling with aggregated component carriers126US 8,077,670 B22011
- Maintaining time alignment with multiple uplink carriers109US 8,934,459 B2InterDigital Patent Holdings, Inc. · 2015
- Method and apparatus of configuring downlink timing and transmitting random access response in mobile communication system using carrier aggregation105US 8,964,793 B2Samsung Electronics Co., Ltd. · 2015