Method and apparatus for determining when to use contention-based access for transmitting data in a wireless network
US8625442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communication system as described here employs control signaling for contention-based uplink access from user equipment devices to a base station. Contention-based access configuration is performed via physical downlink control channel signaling. Configuration data sent to the user equipment devices identifies multiple contention-based access zones, along with minimum power headroom values for each contention-based access zone. A probability factor may also be used to lower collision possibility by influencing whether the user equipment devices perform contention-based uplink access. An uplink grant message can be used to acknowledge contention-based transmission; contention resolution is achieved implicitly via the uplink grant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.