Global cyclic shift delays for distributed transmissions
US12218884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2021 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | May 9, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2627
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to short training field (STF) designs and signaling that support distributed transmissions. A transmitting device that transmits data on a distributed resource unit (dRU) may transmit an STF sequence over a spreading bandwidth of the dRU according to an existing STF tone plan. Each STA allocated a dRU for transmission in a trigger-based (TB) physical layer convergence protocol (PLCP) protocol data unit (PPDU) maps its STF sequence to one or more spatial streams and may apply one or more global cyclic shift delays (CSDs) to the STF sequence mapped to the one or more spatial streams, respectively. As such, different global CSDs may be assigned to different STAs so that each STA transmits its STF sequence with different amounts of delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.