Telefonaktiebolaget Lm Ericsson (publ)

Panagiota Lioliou

Pradeepa Ramachandra

Harald Kallin

Kristina Zetterberg

Chrysostomos Koutsimanis

Andreas Nilsson

Bo Göransson

Fredrik Athley

Dirk Gerstenberger

Lars Lindbom

Mikael Coldrey

Mats Viberg

Network nodes and methods therein for inter cell interference coordination. A method in a base station BScomprises receiving, from a neighboring base station BS, an indicator A, related to estimated spatial properties of a radio channel over which the neighboring base station has received a radio signal from the base station BS. The method further comprises receiving, from a UE served by the base station, an indicator B related to estimated spatial properties of a radio channel over which the UE has received a radio signal from the base station BS. The method further comprises determining a correlation based on indicator A and indicator B; and adapting a transmission to the UE, based on properties of the correlation. By performing the method, the base station BSenables control of interference subjected towards the neighboring base station BScaused by downlink transmission to the UE.

Method and arrangement for inter-cell interference coordination using precoding/beamforming

An apparatus and a method for uplink and/or downlink power control in a radio communication network are provided. The method comprises determining () a relationship between a load of a serving wireless access point and a load of at least one neighboring wireless access point; and determining () an uplink or downlink transmission power based on the determined load relationship.

Method and apparatus for uplink and/or downlink power control in a radio communication network

There is provided a method for utilizing antenna beam information. The method is performed by a network node. The method comprises acquiring antenna beam information indicative of a direction of a wireless device (WD) specific beam of the network node. The method comprises classifying the acquired antenna beam information into a cell specific beam category based on an angular difference between the direction and a direction of main lobe of a cell specific beam of the network node. The method comprises performing at least one of a load balancing action of the wireless device and a radiation beam pattern change related to the cell specific beam category.

Utilization of antenna beam information

An apparatus and a method performed by the apparatus for uplink power control of a wireless device in a radio communication network is provided. The method comprises obtaining () information pertaining to at least two of (a) radio resource utilisation of a serving wireless access point and at least one neighbouring wireless access point, (b) downlink geometry, and (c) uplink performance of the wireless device; and selecting () an uplink power control algorithm based on the obtained information.

Method and apparatus for uplink power control in a radio communication network

There is provided a method for determining a radiation beam pattern. The method is performed by a network node. The method comprises transmitting probe signals, the probe signals being orthogonal to cell-specific reference signals (CRS) transmitted by the network node. The method comprises receiving responses to the probe signals from wireless devices, wherein each response comprises a measurement report based on reception of the transmitted probe signals at each wireless device. The method comprises determining a radiation beam pattern based on the received measurement reports.

Determination of radiation beam pattern

A method, and an apparatus, for self-interference suppression in a relay for wireless communication, wherein the relay is arranged for receiving a signal r(n) transmitted from a transmitter, and for transmitting a self-interference suppressed transmit signal xr(n) to a receiver. The self-interference suppressed transmit signal xr(n) is achieved by determining a receive suppression filter matrix Wr, determining a relay amplification matrix G, and determining a transmit suppression filter matrix Wt, and then applying the suppression filters and the amplification matrix to the received signal r(n).

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Sundbyberg, Sweden

Panagiota Lioliou