Using a Subframe Time Offset when Scheduling Downlink Data Transmissions

摘要

The invention relates to a method in a radio base station for scheduling data transmissions to a user equipment in a first cell. The radio base station is comprised in a telecommunications network comprising at least the first cell and a second cell wherein the radio base station serves at least the first cell. A transmission time of the first cell is divided into a first radio frame comprising a first number of subframes synchronised to a clock. A transmission time of the second cell is divided into a second radio frame comprising an equal number of subframes of equal time length as the first radio frame. The second radio frame is being synchronised to the same clock as the first radio frame. The radio base station receives a first data transmission to be transmitted the user equipment in the first cell, schedules the first data transmission to a minimum of subframes of a first radio frame of the first cell, and transmits the first radio frame offset in time in relation to a second radio frame of the second cell for minimizing simultaneously data transmissions within the cells.