Signaling adapted CSI-RS periodicities in active antenna systems
US9999073B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | May 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0689
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method in a network node is disclosed. The method comprises grouping a plurality of antenna ports corresponding to a plurality of channel state information reference signals (CSI-RS) into at least a first CSI-RS antenna port group and a second CSI-RS antenna port group, and determining, based at least in part on one or more criteria, a first transmission periodicity for the first CSI-RS antenna port group and a second transmission periodicity for the second CSI-RS antenna port group. The method further comprises transmitting, to one or more user equipment, the CSI-RS corresponding to the antenna ports in the first CSI-RS antenna port group according to the determined first transmission periodicity, and transmitting, to the one or more user equipment, the CSI-RS corresponding to the antenna ports in the second CSI-RS antenna port group according to the determined second transmission periodicity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.