Transmit power correction in a mobile communications system

US6389265B1 · kind B1 · utility

Assignee

• ALCATEL · FR

Inventors

• Michael Jeschke · Allmersbach im Tal, DE
• Ivar Mortensen · Stuttgart, DE

Key dates

• Filing date: May 24, 1999
• Grant date: May 14, 2002
• Expiry date: May 24, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W52/36
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

In a UMTS (Universal Mobile Telecommunications System) wherein multiple base stations are able to communicate simultaneously with the same mobile station, with forward direction power control where the mobile station sends a transmit power control command to all base stations serving it, a “feedback-type transmit power correction” is implemented wherein information (PL1, PL2) is transmitted about the current transmitted powers from the base stations (NB1, NB2) to a base station controller (SRNC) which evaluates this information to calculate a correction value (CV1) for the power transmitted by at least one (NB1) of the base stations, which then additionally changes its transmitted power by this correction value (CV1).”