Abstract: A sounding method in a cellular wireless communication system, comprising at least one mobile station and at least two base stations. One base station is a serving base station for the mobile station and the at least one further base station is a neighboring base station. The serving base station generates a schedule for measurement signals and transmits said schedule to the mobile station and to the neighboring base station. The mobile station transmits measurement signals in accordance with the schedule to the serving base station and to the neighboring base station. Furthermore, the neighboring base station calculates a mean channel state for the uplink channel from the mobile station to itself and transmits the mean channel state to at least one further base station, so that said base station can be provided with channel estimations for uplink channels between the mobile station and all base stations.

Abstract: The present invention relates to a method for reducing interference in the downlink direction of a cellular radio communication system comprising base stations communicating with terminals using a frame structure showing a time and frequency extension, said frame comprising a preamble portion and at least one data portion, said terminals being adapted to receive frames for which the receive power of said at least one data portion is varying in a predefined range relative to the receive preamble power of said preamble portion, According to the present invention, the method comprises the steps of: transmitting the part of said data portion destined to said terminal with a transmit power adapted to generate a first receive power (Plow) at said terminal within said range if said terminal belongs to a first group of terminals; transmitting the part of said data portion destined to said terminal with a transmit power adapted to generate a second receive power (Phigh) at said terminal within said range, said seco

Abstract: The present invention relates to a method for scheduling transmissions in a radio communication system comprising a plurality of base stations and a plurality of terminals, a base station being associated to a sector and transmitting/receiving data to/from terminals located in said sector. According to the present invention, the method comprises the steps of: —determining an area around each given sector, said area comprising a set of sectors, —allocating to said sectors in said area a scheduling priority chosen among at least two different scheduling priorities, —scheduling decisions in a sector having a lower scheduling priority than a sector belonging to said area depending on scheduling decisions made for said sector with higher scheduling priority, said scheduling decisions made in said sector with higher scheduling priority being reported by said base station associated to said sector with higher scheduling priority to said base station associated to said sector with lower scheduling priority.

Abstract: The present invention relates to a method for scheduling transmissions in a radio communication system comprising a plurality of base stations and a plurality of terminals, a base station being associated to a sector and transmitting/receiving data to/from terminals located in said sector. According to the present invention, the method comprises the steps of: determining an area around each given sector, said area comprising a set of sectors, allocating to said sectors in said area a scheduling priority chosen among at least two different scheduling priorities, scheduling decisions in a sector having a lower scheduling priority than a sector belonging to said area depending on scheduling decisions made for said sector with higher scheduling priority, said scheduling decisions made in said sector with higher scheduling priority being reported by said base station associated to said sector with higher scheduling priority to said base station associated to said sector with lower scheduling priority.

Abstract: The present invention relates to measurement in radio communication systems. In particular, the present invention relates to a sounding method in a cellular wireless communication system, the communication system itself and its components like base stations and mobile stations. The radio communication system (1) comprises at least one mobile station (2) and at least two base stations (3, 4). One of said base stations is a serving base station (3) for the mobile station (2) and the at least one further base station is a neighboring base station (4) of the serving base station (3). The serving base station (3) is adapted to generate a schedule for measurement signals and to transmit said schedule to the mobile station (2) and to the neighboring base station (4). The mobile station (2) is adapted to transmit measurement signals in accordance with said schedule to the serving base station (3) and to the neighboring base station (4).

Abstract: The present invention relates to a method for reducing interference in the downlink direction of a cellular radio communication system comprising base stations communicating with terminals using a frame structure showing a time and frequency extension, said frame comprising a preamble portion and at least one data portion, said terminals being adapted to receive frames for which the receive power of said at least one data portion is varying in a predefined range relative to the receive preamble power of said preamble portion, According to the present invention, the method comprises the steps of: transmitting the part of said data portion destined to said terminal with a transmit power adapted to generate a first receive power (Plow) at said terminal within said range if said terminal belongs to a first group of terminals; transmitting the part of said data portion destined to said terminal with a transmit power adapted to generate a second receive power(Phigh) at said terminal within said range, said secon