Huawei Technologies Co., Limited

Telefonaktiebolaget Lm Ericsson (publ)

Hauwei Technologies Co., Ltd.

Mats Hogberg

Mattias Gustafsson

Mathias Pauli

Michael Meixner

Björn Sihlbom

Martin Alm

Anders Gustavsson

Mats Andersson

Radio network node comprises a plurality of antenna sub arrays, forming a multiple antenna array which is configured for beamforming, spatial multiplexing and Multiple Input Multiple Output, MIMO, transmission/reception, and further comprising an antenna base band processing unit and a central base band processing unit. The radio network node further comprises a plurality of antenna active modules, wherein each active antenna module is connected to one of the antenna sub arrays, comprised in the multiple antenna array, and wherein each active antenna module is configured for pre-processing of signals over the respective antenna sub array, before any forwarding of signals is made to the central base band processing unit.

Architecture and method in a wireless communication network

A Base Transceiver Station (BTS) and a method for wireless communication with a User Equipment (UE) in a wireless communication system. The BTS comprises a Multiple Input Multiple Output (MIMO) antenna array configured for beamforming and MIMO transmission. The BTS further comprises a processing circuit, configured for supporting same or separate downlink precoding for a control plane and a user plane by modifying phase excitation of the MIMO antenna array and causing a transceiver to create an antenna beam by providing different phase for each antenna element of the MIMO antenna array. The BTS also comprises a transceiver, configured for transmitting a signal in the antenna beam via the MIMO antenna array, to be received by the UE.

Methods and nodes in a wireless communication network

A receiver and a method are applied in a wireless communication system for detecting interference with a coexisting radar system. A signal received from an antenna is fed through an analog part and a subsequent digital part of said receiver. The receiver has an element with a-priori known attenuation values for a predefined set of frequencies, a first branch-off element for deriving a first detection signal from the signal before the element and a second branch-off element for deriving a second detection signal from the signal after the element. The receiver processes the first and the second detection signal such that a difference between the first and second detection signal is comparable with a threshold value, where the threshold value depends on the a-priori known attenuation values of the element. Depending on the comparison result, a frequency is identified as interfering or not a co-existing radar system.

Interference detection in a wireless communication system

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Partille, Sweden

Mats Hogberg