RACH procedures in unlicensed spectrum
US11265919B2 · kind B2 · utility
1Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2018 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Jul 10, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0808
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and instrumentalities are disclosed for Random Access Channel (RACH) procedures in unlicensed spectrum. A wireless transmit/receive unit (WTRU) may monitor for a random access response (RAR) or a reference signal (RS), e.g. in an RAR window. The WTRU may determine whether an RS has been received a threshold amount of times, e.g. if an RAR is not received. The WTRU may continue to monitor for an RAR or an RS, e.g. if the RS has not been received a threshold amount of times and the RAR window is not at a maximum RAR window size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.