Method and apparatus for uplink orthogonal frequency division multiple access communication in a WLAN
US10524290B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Jun 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication device performs a clear channel assessment (CCA) procedure to determine whether the communication device can transmit in a shared wireless communication medium, wherein the communication device is in a first basic service set (BSS) associated with a virtual access point (AP) implemented by a physical AP, and wherein the first BSS corresponds to a first BSS identifier. Performing the CCA procedure includes: for first signals having the first BSS identifier or having one or more second BSS identifiers corresponding to other virtual APs implemented by the physical AP, comparing energy of the signals to a first threshold; and for first signals determined by the communication device to have one or more third BSS identifiers, wherein the one or more third BSS identifiers correspond to other physical APs, comparing energy of the signals to a second threshold lower than the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.