Nokia Siemens Networks Gmbh & Co Kg

Nokia Solutions and Networks Gmbh & Co. Kg

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Nokia Solutions and Networks Oy

Hmd Global Oy

Josef Martin Eichinger

Wolfgang Zirwas

Egon Schulz

Thomas Haustein

Volker Jungnickel

Esa Tapani Tiirola

Kari Pekka Pajukoski

Kari Juhani Hooli

Sabine Roessel

Jijun Luo

Matti Tapani Kiiski

Hermann Rohling

Hans Juergen Kroener

Matthias Lott

Ruediger Halfmann

Elena Costa

Martin Goldberg

Rüdiger Halfmann

Clemens Von Helmolt

Christian Mahr

Hannu Tapio Häkkinen

Tobias Giebel

Yan Gao

Bernard Raaf

Mattias Lampe

Hans Kroener

Roman Plyaskin

Data in a mobile communications system is transmitted on at least one channel between at least one base station with multiple antennas and at least one user equipment. A base station applies precoding to the data based on a set of predefined codebooks. A first tracking mode with a first codebook from the set of predefined codebooks is used for the precoding, and at least a second tracking mode with at least a second codebook from the set of predefined codebooks is used for the precoding. The base station switches between the first tracking mode and the second tracking mode depending on at least one condition of the channel.

Method, mobile station and base station for transmitting data in mobile communication system

A method and apparatus for controlling retransmissions in multipoint reception is disclosed. In the method it is determined that additional information is needed for decoding of at least one received information block. A procedure is selected for obtaining the additional information from a plurality of options to proceed based on information about predicted result of at least one of the options. In accordance with an aspect an indication of one of a positive acknowledgement of the information block, a negative acknowledgement of the information block and suspension of retransmission of the information block is generated and communicated on a retransmission control channel.

Controlling retransmissions

A method detects a first baseband signal sent by a first sending station via an air interface to a first radio station of a radio communications system. A first receive signal, which contains the first baseband signal superposed with at least a second baseband signal sent by a second sending station to a second radio station, is received by the first radio station. The first radio station uses at least a second receive signal received by the second radio station for detection of the first baseband signal. The second receive signal contains at least the second baseband signal, and is used to at least partially cancel the interference in the first receive signal caused by the second baseband signal.

Method, system and radio station for interference cancellation

Data received by a first network component from a second network component is processed by a filter function according to which the whole data or a portion of the data is used.

Method and device for processing data in a network component

A method and a system for transmitting data by a transmitter over a channel having a predetermined channel quality estimate, comprises the steps of splitting (SP) input data stream (S, S, S) to be transmitted into a plurality of data sub-streams (S, S, S); processing (SYM, SYM, SYMj) each of the plurality of data sub-streams (S, S, S) into a plurality of symbol subsets (S, S, S) by selecting a certain scheme of coded-modulation (BPSK, QPSK, 16-QAM); processing, separately, each of the plurality of symbol subsets (S, S, S), via a plurality of separate Discrete Fourier Transforms (DFT, DFT, DFT), herein after denoted as DFTs, to obtain a plurality of DFT-precoded data sub-streams (S, S, S); allocating each DFT-precoded data sub-stream (S, S, S) in a frequency resource block (RB, RB, RB), via a sub-carrier mapping module (SCM), so that for each data sub-stream (S, S, S) the selected scheme of coded-modulation (BPSK, QPSK, 16-QAM) is chosen in dependence of the values of the channel quality estimate at the frequencies of its own allocated frequency resource block (RB, RB, RB).

Adaptive modulation and coding in a SC-FDMA system

Resources of two frequency division duplex (FDD) frequency bands at a distance from each other are allocated for transmissions by a time division duplex (TDD) transmission method. The resources in the first FDD frequency band are allocated for FDD transmissions in the uplink and for TDD transmissions predominantly in the uplink as the primary transmission direction, and in a secondary manner in the downlink as the secondary transmission direction. The resources in the second FDD frequency band are allocated for FDD transmissions in the downlink and for TDD transmissions predominantly in the downlink as the primary transmission direction and in a secondary manner in the uplink as the secondary transmission direction. No resources are allocated for time periods of an allocation of resources for one of the secondary transmission directions in the first and second frequency bands, for FDD transmissions in the counter transmission direction to this secondary transmission direction.

Method, network device and user station for allocating resources to frequency bands of radio communication system

In a method for the error-monitored transmission of data via interfaces of a multi-step communication system, the data is transmitted from a transmitter station to a data-receiving station via at least two relay stations which are connected therebetween and receive and further transmit the data parallel to each other. The data is retransmitted if the transmission has been insufficient due to a request from the receiver end and/or due to the lack of a confirmation from the receiver end. In order to increase performance while reducing power consumption of the system, the request or confirmation is generated only by the receiver station and is sent back to the transmitter station. The relay stations consequently do not generate any confirmations or requests.

Method and communication station for transmitting data

Growing community of inventors

Neufinsing, Germany

Josef Martin Eichinger