Patent · US Active

Uplink power control for power limited terminals

US8644874B2 · kind B2 · utility

5Cited by

3References

15Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Eva Englund · Linköping, SE
Erik Dahlman · Stockholm, SE
Anders Furuskär · Stockholm, SE
Ylva Jading · Stockholm, SE
Kristina Jersenius · Linköping, SE
Stefan Parkvall · Bromma, SE

Key dates

Filing date	Jul 14, 2008
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Aug 7, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04W52/367
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Transmit power control methods and apparatus are disclosed. In several embodiments, a mobile terminal (200) is configured to effectively ignore ‘UP’ transmit power control commands in the event that the mobile terminal (200) is operating in a power-limited state. In an exemplary method for controlling transmit power at a mobile terminal (200), a plurality of transmit power control commands are received. An accumulated power control value is adjusted (350) in response to each transmit power control command that directs a negative adjustment in transmit power. However, the accumulated power control value is adjusted (350) in response to a transmit power control command that directs a positive adjustment in transmit power only if the mobile terminal (200) is not in a power-limited state. Transmit power settings for each transmission are calculated (360) based on the accumulated power control value and the one or more radio link parameters.

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