Alcatel Lucent

Oliver Stanze

Hajo Bakker

Andreas Weber

Bozo Cesar

Mark Doll

Hardy Halbauer

Robert Fetscher

Volker Braun

Christian Gerlach

Uwe Doetsch

Siegfried Klein

Hajo-Erich Bakker

Bernd Gloss

Martin Link

Antoni Bestard Bennasar

Yejian Chen

Jürgen Otterbach

Christian Georg Gerlach

Cesar Bozo

The invention concerns a method for coordination of transmission from a first and at least one further base station (MP), wherein said first base station (MP) evaluates the usage by said at least one further base station (MP) of at least one subframe, and said first base station (MP) uses said at least one subframe for transmission dependent on the evaluated usage by said at least one further base station (MP) of said at least one subframe, and a base station therefore.

Method for coordination of transmission from base stations, and a base station therefor

A method for interference reduction in a radio communication system is disclosed. The method includes receiving from a mobile station indications of radiation beams that are transmitted by a first base station of the radio communication system and that fulfill or exceed a predefined quality criterion at the mobile station, when the mobile station is attached to the first base station and when the mobile station is located within a first overlapping coverage area of the first base station and of a second base station of the radio communication system, and determining at least one radio resource to be unused or to be transmitted with a limited transmission power by the first base station for at least one of the radiation beams based on the received indications for serving the mobile station or a further mobile station by the second base station with the at least one radio resource.

Method for interference reduction in a radio communication system, processing unit, and wireless access network node thereof

Embodiments relate to an apparatus, a method and a computer program for a base station transceiver () for a mobile communication system (). The base station transceiver () is operable in a coverage area () of another base station transceiver (). The other base station transceiver () is operable to transmit radio signals in a repetitive sequence of radio frames, wherein in at least one of the radio frames in the sequence the other base station transceiver () is operable to transmit with a reduced transmission power or to suspend transmission compared to at least one other of the radio frames in the sequence. The apparatus () comprises an interface () operable to receive sequence information on the at least one of the radio frames in the sequence, during which the other base station transceiver () is operable to transmit with the reduced transmission power or to suspend transmission compared to the at least one other of the radio frames in the sequence. The apparatus () further comprises a controller () operable to determine configuration information on a measurement configuration for a mobile transceiver () associated to the base station transceiver (), wherein the configuration information comprises information on a signal quality measurement at the mobile transceiver () on radio signals received from the base station transceiver (). The signal quality measurement is performed during a time interval with a duration being predetermined by the mobile transceiver (). The controller () is further operable to determine duration information on the duration of the time interval and the controller () is operable to determine the configuration information based on the sequence information and the duration information.

Apparatus, method and computer program for a base station transceiver

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.

Measurement in radio communication systems

The invention concerns a method for beam coordination between a first base station (M) and a second base station (P), wherein interfering beams (B-B) transmitted from the first base station (M) are determined based on measured reference signals, dependent on a ranking of interfering beams (B-B) which shall be restricted in use, a restriction of a use of radio resources in the first base station (M) in at least one ranked interfering beam (B) is performed, and user terminals (UE, UE) served by the second base station (P) are scheduled on radio resources which are restricted in use in the first base station (M) in said at least one ranked interfering beam (B), a base station and a user terminal therefor.

Method for beam coordination, and a base station and a user terminal therefor

Embodiments relate to an apparatus, a method and a computer program for a base station transceiver () for a mobile communication system (). The base station transceiver () is operable in a coverage area () of another base station transceiver (). The other base station transceiver () is operable to transmit radio signals in a repetitive sequence of radio frames, wherein in at least one of the radio frames in the sequence the other base station transceiver () is operable to transmit with a reduced transmission power or to suspend transmission compared to at least one other of the radio frames in the sequence. The apparatus () comprises an interface () operable to receive information on the at least one of the radio frames in the sequence and a controller () operable to determine information on a measurement configuration for a mobile transceiver () associated to the base station transceiver () based on the received information. The information on the measurement configuration comprises information on a periodic signal quality measurement at the mobile transceiver () on radio signals received from the base station transceiver () during a time interval. The information on the measurement configuration comprises information positioning the time interval in the sequence to the same position for at least two subsequent signal quality measurements.

Embodiments provide an apparatus, a method and a computer program for scheduling a data transmission. The apparatusis operable for scheduling data transmissions to a mobile transceiver in a mobile communication system. The apparatuscomprises means for determininga delay between a transmission of a first data packet and a transmission of a next data packet to the mobile transceiver, the delay depending on an acknowledgement packet received from the mobile transceiver for the first data packet. The apparatusfurther comprises means for schedulingdata transmissions to the mobile transceiver based on the delay.

Apparatus, method and computer program for scheduling data transmission

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:

Method for reducing interference in the downlink direction of a cellular radio communication network and corresponding base station

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: &#x2014;determining an area around each given sector, said area comprising a set of sectors, &#x2014;allocating to said sectors in said area a scheduling priority chosen among at least two different scheduling priorities, &#x2014;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.

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Stuttgart, Germany

Oliver Stanze