Method and arrangement in a telecommunication network with intercell interference coordination

An arrangement in a first base station, for intercell interference coordination in a telecommunication network, which telecommunication network comprises the first base station, acting as serving base station for a mobile station, and a second base station, the arrangement comprising:

• a determining unit, configured to determine that transmission interference to the mobile station is to be limited, and
• a triggering unit, configured to trigger the mobile station to send a sounding signal on a radio resource, which sounding signal is to be received by the second base station, enabling the second base station to select a transmission parameter that limits interference for the mobile station based on time domain averaging of the sounding signal.

A method in a second base station, for intercell interference coordination in a telecommunication network, which telecommunication network comprises the second base station and a first base station, acting as serving base station for a mobile station, the method comprising the actions of:

• receiving a sounding signal on a radio resource from the mobile station,
• detecting a characteristic of the received sounding signal by time domain averaging of the sounding signal, and
• selecting a transmission parameter that limits interference for the mobile station, from which the sounding signal was received, based on the detected characteristic of the received sounding signal.

An arrangement in a second base station, for intercell interference coordination in a telecommunication network, which telecommunication network comprises the second base station and a first base station, acting as serving base station for a mobile station, the arrangement comprising:

• a receiver, configured to receive a sounding signal on a specific radio resource from the mobile station,
• a detecting unit, configured to detect a characteristic of the received sounding signal by time domain averaging of the sounding signal,
• a selecting unit, configured to select transmission parameters that limits interference for the mobile station, from which the sounding signal was received, based on characteristic of the received sounding signal.

A method in a mobile station, for assisting intercell interference coordination in a telecommunication network, which telecommunication network comprises a first base station, acting as serving base station for the mobile station, and a second base station, the method comprising the actions of:

• receiving a trigger from the first base station to send a sounding signal on a radio resource,
• sending the sounding signal to be received by the second base station, enabling the second base station to select a transmission parameter that limits interference for the mobile station, based on a time domain averaging of a detected characteristic of the sounding signal.

An arrangement in a mobile station, for assisting intercell interference coordination in a telecommunication network, which telecommunication network comprises a first base station, acting as serving base station for the mobile station, and a second base station, the arrangement comprising:

• a receiver configured to receive a trigger from the first base station to send a sounding signal on a radio resource,
• a transmitter configured to send the sounding signal to be received by the second base station, enabling the second base station to select a transmission parameter that limits interference for the mobile station, based on a time domain averaging of a detected characteristic of the sounding signal.