Patent · US Active

Uplink power headroom reporting for carrier aggregation

US8315320B2 · kind B2 · utility

32Cited by

0References

44Claims

0Family size

Assignee

InterDigital Patent Holdings, Inc. · FR

Inventors

Guodong Zhang · Syosset, US
Erdem Bala · Farmingdale, US
Philip J. Pietraski · Huntington Station, US
Sung-Hyuk Shin · Northvale, US
Kyle Jung-Lin Pan · Saint James, US
Joseph S. Levy · Merrick, US
Jin Wang · East Islip, US
Peter S. Wang · Port Jefferson, US
Janet A. Stern-Berkowitz · Melville, US
John W. Haim · Baldwin, US

Key dates

Filing date	Dec 3, 2009
Grant date	Nov 20, 2012
Priority date	—
Expiry date	Jul 20, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04W72/21
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for reporting power headroom is disclosed. Power headroom may be reported across all carriers (wideband), for a specific carrier, or for a carrier group. The formula used to calculate the power headroom depends on whether the carrier (or a carrier in the carrier group) has a valid uplink grant. If the carrier or carrier group does not have a valid uplink grant, the power headroom may be calculated based on a reference grant. The power headroom is calculated by a wireless transmit/receive unit and is reported to an eNodeB.

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