Disturbance mitigation

US11329699B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Giovanni Interdonato · Los Angeles, US
• Pål Frenger · Linköping, SE
• Emil Björnson · Stuvsta-Snättringe, SE
• Marcus Karlsson · Älvsbyn, SE
• Erik Larsson · Linköping, SE

Key dates

• Filing date: Oct 16, 2018
• Grant date: May 10, 2022
• Expiry date: Feb 4, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W88/085
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A disturbance mitigation method of a communication element for a distributed antenna system is disclosed. The communication element is associated with two or more antenna elements of the distributed antenna system.The method comprises acquiring channel condition information associated with at least two of a plurality of wireless communication devices served by the communication element, and partitioning the plurality of wireless communication devices into at least two groups based on the acquired channel condition information.The method also comprises, for each of the groups, determining respective pre-coding weights based on the acquired channel condition information, wherein the respective pre-coding weights of different groups are determined according to different disturbance mitigation approaches.Furthermore, the method comprises transmitting a signal comprising respective symbols intended for corresponding ones of the plurality of wireless communication devices, wherein the symbols intended for wireless communication devices of each group are pre-coded using the determined respective pre-coding weights of the group, and wherein the pre-coded symbols of at least two of the grou…