Patent · US Active

Method and a device for enhanced performance in a cellular wireless TDD system

US8537688B2 · kind B2 · utility

3Cited by

3References

9Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

David Astely · Bromma, SE
Per Skillermark · Stockholm, SE
Tobias Tynderfeldt · Solna, SE
Erik Westerberg · Stuvsta-Snättringe, SE
Hannes Ekström · Aachen, DE

Key dates

Filing date	Feb 23, 2007
Grant date	Sep 17, 2013
Priority date	—
Expiry date	Dec 27, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04B7/2656
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The invention discloses a method (1100) for a cellular wireless access TDD system (100) with a base stations (120, 220) for respective cells (110, 210) in the system, where each cell can accommodate at least a first user terminal (130, 230). The user terminals can receive traffic from their base stations during a down link period, and can transmit traffic to their base stations (120, 220) during an up link period (UL). There is a first guard period (TDu) at the transition from down link to up link, and a second guard period (TUD) at the transition from up link to down link. The method comprises measuring the interference level in a second plurality (110, 210) of cells during part of the time between two consecutive down link periods, and varying the duration of said first and/or second guard period in said second plurality of cells (110, 210) according to the interference level.

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