Abstract: Disclosed is a method for improving system performance in a wireless communication network comprising one or more network cells. Each network cell comprises one or more transmission points transmitting cell specific information. The method comprises determining (201, 401) whether a first TRxP comprised in a first network cell fulfills a utilization criterion. When it is determined that the first TRxP fulfills the utilization criterion (202, 401) the method further comprises gathering (204, 403) utilization statistics associated with the first TRxP and/or with the first network cell, evaluating (205, 404) the gathered utilization statistics and determining (206,405), based on the evaluated utilization statistics, whether moving the first TRxP to a second network cell will improve overall system performance of the wireless communication network. Also disclosed are arrangements, transmission points, radio control functions and computer program products.

Abstract: A radio base station, RBS (10) of a wireless communication network indicates to a wireless device (14, 18, 20) where in the time and/or frequency domain to perform radio quality measurements. If the RBS (10) determines that one or more wireless devices (14, 18, 20) (including those that are idle) are in risk of performing deteriorated quality measurements, it refrains from scheduling beamformed downlink data in the time/frequency region where the wireless devices (14, 18, 20) perform quality measurements when the reference signals (e.g., Cell Specific Reference Signals, or CRS) are broadcast. This avoids deterioration of the RSRQ due to beamforming gain, and allows existing legacy features that rely on RSRQ to continue to function as originally intended. The restriction is only on beamformed data—the transmission of non-beamformed data in the relevant bandwidth is already accounted for in the use of RSRQ measurements.

Abstract: A method of a control node, operable in a communication network and comprising controlling circuitry configured to estimate quality of service (QoS) for geographical locations in the network is disclosed.

Abstract: Disclosed is a method for improving system performance in a wireless communication network comprising one or more network cells. Each network cell comprises one or more transmission points transmitting cell specific information. The method comprises determining (201, 401) whether a first TRxP comprised in a first network cell fulfills a utilization criterion. When it is determined that the first TRxP fulfills the utilization criterion (202, 401) the method further comprises gathering (204, 403) utilization statistics associated with the first TRxP and/or with the first network cell, evaluating (205, 404) the gathered utilization statistics and determining (206,405), based on the evaluated utilization statistics, whether moving the first TRxP to a second network cell will improve overall system performance of the wireless communication network. Also disclosed are arrangements, transmission points, radio control functions and computer program products.

Abstract: A method for assisting in a cell re-selection procedure in a cellular communication system comprises obtaining (S1) of information comprising radio conditions and/or user equipment population related to at least a serving cell and optionally also related to at least one neighbor cell to the serving cell. The obtained information is compared (S2) with a criterion for enforced cell re-selection procedure. If the criterion for enforced cell re-selection procedure is fulfilled by the obtained information, an enforcement of, or an action for increasing the probability for causing, a cell re-selection procedure of at least one user equipment within the serving cell is initialized (S3). Devices for performing such a method are also disclosed.

Abstract: A method for assisting in a cell re-selection procedure in a cellular communication system comprises obtaining (S1) of information comprising radio conditions and/or user equipment population related to at least a serving cell and optionally also related to at least one neighbour cell to the serving cell. The obtained information is compared (S2) with a criterion for enforced cell re-selection procedure. If the criterion for enforced cell re-selection procedure is fulfilled by the obtained information, an enforcement of, or an action for increasing the probability for causing, a cell re-selection procedure of at least one user equipment within the serving cell is initialized (S3). Devices for performing such a method are also disclosed.

Abstract: An exhaust purification system for purifying exhaust gas from a combustion engine comprising: an exhaust pipe (10) for the supply of exhaust gas; a pre-chamber (12) for receiving a flow of exhaust gas via a supply pipe (14); a supply valve (16) for controlling a flow of exhaust gas into the pre-chamber; at least one mixing chamber (18), in fluid connection with the pre-chamber for receiving the exhaust gas via the pre-chamber; an ionizing equipment (20) configured to ionize air, connected to the mixing chamber (18) so that ionized air is fed into the mixing chamber and is mixed with the exhaust gas; wherein the supply valve (16) is configured to be controlled based on a flow velocity of exhaust gas in the exhaust pipe (10).

Abstract: An exhaust purification system for purifying exhaust gas from a combustion engine comprising: an exhaust pipe (10) for the supply of exhaust gas; a pre-chamber (12) for receiving a flow of exhaust gas via a supply pipe (14); a supply valve (16) for controlling a flow of exhaust gas into the pre-chamber; at least one mixing chamber (18), in fluid connection with the pre-chamber for receiving the exhaust gas via the pre-chamber; an ionizing equipment (20) configured to ionize air, connected to the mixing chamber (18) so that ionized air is fed into the mixing chamber and is mixed with the exhaust gas; wherein the supply valve (16) is configured to be controlled based on a flow velocity of exhaust gas in the exhaust pipe (10).