Patent · US Active

Power headroom reporting for carrier aggregation

US9386470B2 · kind B2 · utility

5Cited by

0References

36Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Robert Baldemair · Solna, SE
Dirk Gerstenberger · Sollentuna, SE
Daniel Larsson · Stockholm, SE
Henning Wiemann · Aachen, DE

Key dates

Filing date	Feb 28, 2011
Grant date	Jul 5, 2016
Priority date	—
Expiry date	Jul 20, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04W52/34
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Power headroom reporting and report handling are discussed in the context of a Physical Uplink Shared Channel (PUSCH), on which a user equipment (UE) has no valid uplink grant, and a Physical Uplink Control Channel (PUCCH) on which a UE has no transmission. Under these circumstances, it is not possible to directly calculate one or more parameters which are used to calculate power headroom. Accordingly, exemplary embodiments provide for predetermined, known values to be used by the UE to calculate the power headroom, and by the eNodeB to understand the meaning of a received power headroom report.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.