Methods and devices for uplink diversity transmission
US9025477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Nov 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/42
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and devices are provided wherein a user equipment transmits using at least two uplink transmit antennas and receives a set of control signals in the downlink direction from a cellular network. The user equipment estimates a received signal quality for each control signal in said set of control signals and determines, based on said received signal quality, which control signals that have been reliably received. The user equipment derives one or more parameters related to the uplink transmit diversity operation using a subset of control signals from the set of control signals, said subset only including control signals determined as reliably received; and transmits in the uplink direction applying the derived one or more parameters to control the uplink transmit diversity operation. The accuracy of the transmit diversity parameter values derived/set by the UE can be improved. This will enhance the performance of the uplink transmit diversity and will also reduce interference to the neighbor cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.