UE power allocation according to scheduler utility metric for DL MU-MIMO and DL CoMP
US9674801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2012 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Nov 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/367
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system is provided for allocating downlink transmit power in a wireless multiple-input multiple-output (MIMO) system. During operation, the system identifies a set of receivers for receiving signals from one or more transmitters on a same time-frequency slot, receives channel state information (CSI) for communication channels between the identified receivers and the transmitters, and constructs a precoder based on the CSI. The system further derives a set of power-scale factors for the precoder based on a utility function associated with the identified receivers such that the power-scale factors optimize the utility function. A respective power-scale factor scales power transmitted to a corresponding receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.