Abstract: The solution presented herein manages the feedback from multiple transmission points by reducing the amount of feedback provided by one or more slave nodes to a controlling master node. To that end, methods and apparatus are provided that determine whether there is a need for the slave node to provide feedback to the master node. Responsive to this determination, the methods and/or apparatus operate the master and/or slave node in a reduced feedback mode that manages the feedback provided by the slave node to the master node such that an amount of feedback provided by the slave node when operating in the reduced feedback mode is less than an amount of feedback provided by the slave node when operating in a full feedback mode.

Abstract: Methods, devices and computer programs for determining new transmit directions to use for beamformed transmissions in case the link quality of an existing direction falters. A transmitting communication device and a receiving communication device cooperate via a beam tracking procedure to determine a new suitable transmit direction to use for upcoming beamformed transmissions. Information relating to the beam tracking procedure is communicated over an existing link that enables communication between the transmitting and receiving communication devices. The receiving communication device provides the transmitting communication device with information about a beam scan performed in order to detect tracking beams transmitted by the transmitting communication device. This information allows the transmitting communication device to determine suitable transmit directions to use.

Abstract: Disclosed is a method and corresponding devices and computer programs for determining antenna weights for transmissions with punctured signals. The method comprises extracting, from a signal reception model for signals transmitted by at least two communication units, at least one of the communication units transmitting with punctured signals, a signal orthogonality loss quantity introduced by the punctured signals. The method also comprises calculating, based on the extracted signal orthogonality loss quantity, a covariance matrix quantifying the signal orthogonality loss between signals transmitted by the at least two communication units. The method also comprises determining, based on the covariance matrix, antenna weights for data symbols in the signals.

Abstract: Methods, nodes, a wireless communication device and computer programs to be usable in association with controlling transmission of at least one data unit via a first link between a first access node and a wireless communication device and via a second link between the first access node and the wireless communication device via the second access node are described. In one embodiment, the method may be performed by the first access node and may comprise receiving first transmission delay information indicative of a transmission delay of the first link and/or second transmission delay information indicative of the second link, and controlling the transmission of said data unit based on the first and/or second transmission delay information.

Abstract: A method and a radio access device for performing the method for positioning of a target station (STA) by a radio access device. The method receives sounding feedback, from a target station (STA), for each of a plurality of subbands in response to sending a sounding signal, the sounding feedback comprising channel quality information for each subband of the plurality of subbands. The method calculates an angle-of-arrival (AoA) characteristic from the sounding feedback for at least a subset of the plurality of subbands and maps the AoA characteristics of the at least the subset of the plurality of subbands to a fingerprint in a fingerprint reference map. The method then determines the location of the target STA based on at least the fingerprint.

Abstract: Methods, devices and computer programs for determining new transmit directions to use for beamformed transmissions in case the link quality of an existing direction falters. A transmitting communication device and a receiving communication device cooperate via a beam tracking procedure to determine a new suitable transmit direction to use for upcoming beamformed transmissions. Information relating to the beam tracking procedure is communicated over an existing link that enables communication between the transmitting and receiving communication devices. The receiving communication device provides the transmitting communication device with information about a beam scan performed in order to detect tracking beams transmitted by the transmitting communication device. This information allows the transmitting communication device to determine suitable transmit directions to use.

Abstract: A method for multipoint data flow control, performed in a controller entity of a wireless communication system, comprises receiving of a data flow from a source flow queue. The data flow is split into split data flows, one for each of at least two wireless transmission points. Measures of timing skews for transmissions or quantities from which such timing skews can be deduced are received from each of the at least two transmission points. The data flow splitting is controlled in dependence of the timing skews. The split data flows are transmitted to the at least two wireless transmission points. A method for assisting in multipoint data flow control, network nodes configured for multipoint data flow control and assisting in multipoint data flow control, and computer programs therefore are also disclosed.

Abstract: It is disclosed a base station of a cell having at least a first and a second antenna sector, where the base station is distributed in terms of location and a method performed in said base station for determining an uplink power control target for a UE that is connected to the first antenna sector. The method comprises estimating (42, 504), in the at least the first and the second antenna sectors, a thermal noise floor; and determining (44, 516) the uplink power control target based on a maximum of the estimated thermal noise floors in all of the at least the first and the second antenna sectors. The method improves uplink performance of cells with antenna sectors having different receiver sensitivity, and provides enhanced observability of UEs for cells extending over multiple base stations.

Abstract: A network node and a method performed by the network node for scheduling transmissions between the network node and one or more wireless devices in the same physical layer resources are provided. The method comprises selecting a beam for a transmission between the network node and a first one of the wireless devices; and determining if a portion of physical layer resources remains available after allocating portions of physical layer resources to a first set of one or more wireless devices within transmission range of the selected beam. The method further comprises if at least a portion of physical layer resources remains available, adjusting the selected beam such that a second set of one or more additional wireless devices not within transmission range of the initially selected beam are within transmission range of the adjusted beam.

Abstract: Embodiments herein relate to a method performed by a first access point (12) out of at least two access points for handling communication of a wireless device (10) served by the first access point (12) in a wireless communication network (1). The first access point (12) coordinates communication with a second access point (13) out of the at least two access points in the wireless communication network (1), which coordination is performed over a backhaul connection between the first access point (12) and the second access point (13). The first access point determines a delay of the backhaul connection to the second access point (13). The first access point (12) schedules a transmission to or from the wireless device (10) based on the determined delay, wherein the transmission from or to the wireless device (10) is delayed.

Abstract: A scheduling function node (SF) uses the beams available for each WCD to avoid scheduling a transmission that would imply that interference between WCDs is created. In the simplest form such a scheme could be described as follows: (1) avoid scheduling transmission in directions that coincide between WCDs (here, a direction would typically be represented by both azimuth and elevation angles) and (2) when the available beam directions do not allow interference avoidance, accounting for this fact and exploiting other types of orthogonality in the scheduling of time-frequency resources.

Abstract: The solution presented herein controls a transmission timing of data from multiple transmission points to synchronize the data reception at a receiver to within pre-specified limits. To that end, a skew timing is determined from a difference between a second delay (a transmission time between the master node and a second slave node) and a first delay (a transmission time between a master node and a first slave node). A deadzone mapping is applied to the initial liming error (determined from a difference between a reference skew timing and the skew timing) to determine a final timing error. The deadzone mapping is configured to adjust the initial timing error responsive to a comparison between the initial timing error and a timing error range. The first and second delays are controlled using the final timing error to keep the skew timing within the timing error range.

Abstract: A method for assisting in multipoint data flow control in a wireless communication system having a number, n+1, where n?1, of wireless-transmission points. The method comprises obtaining, for each of the wireless-transmission points, a round trip time of a present sampling period for data travelling to a user equipment via a respective wireless-transmission point and an acknowledge message travelling back. A round trip time skew is computed for the present sampling period for individual wireless-transmission points. The round trip time skew is a difference between the obtained round trip time of a respective wireless-transmission point and a reference value. A reference round trip time value is provided for each wireless-transmission point in dependence of the round trip time skews. A rate control signal is generated, for each of the wireless-transmission points, in dependence of a respective reference round trip time value. Corresponding arrangements are also disclosed.

Abstract: In some embodiments, a method of operation of a node to monitor for faults in a receiver subsystem of a radio node comprises estimating a noise floor for each receiver chain of a plurality of receiver chains in the receiver subsystem of the radio node for each of one or more carriers to thereby provide a plurality of noise floor estimates. The method further comprises determining average received power for each receiver chain of the plurality of receiver chains in the receiver subsystem of the radio node for each of one or more carriers to thereby provide a plurality of average received power measurements. The method further comprises determining that there is a fault in the receiver subsystem of the radio node based on at least one of (a) a subset of the plurality of noise floor estimates and (b) a subset of the plurality of average received power measurements.

Abstract: The proposed technology generally relates to flow control in wireless communication systems and in particular to methods and devices for flow control in multi-point transmission wireless communication systems.

Abstract: At least one of location-specific downlink properties and location-specific uplink properties of a radio link are determined and fused to obtain a location-specific fingerprint of the radio link associated with a location of a mobile device.

Abstract: The present embodiments disclose a network node (400); a method thereof; a user equipment (700) and a method thereof. The method performed by the network node (400) comprises: selecting (301) a cell-specific RS process; selecting (302) a beam scan pattern; selecting (303) 5 a UE (799); transmitting (304) a cell specific RS associated to the cell-specific RS process, to the selected UE (700); configuring (305) the UE with the selected cell-specific RS process and receiving (306) a beam report from the UE (700).

Abstract: The solution presented herein manages the feedback from multiple transmission points by reducing the amount of feedback provided by one or more slave nodes to a controlling master node. To that end, methods and apparatus are provided that determine whether there is a need for the slave node to provide feedback to the master node. Responsive to this determination, the methods and/or apparatus operate the master and/or slave node in a reduced feedback mode that manages the feedback provided by the slave node to the master node such that an amount of feedback provided by the slave node when operating in the reduced feedback mode is less than an amount of feedback provided by the slave node when operating in a full feedback mode.

Abstract: Recovery control is provided for recovering data packet flow control between a network node and a radio base station over a radio network interface. The base station communicates with at least one user equipment, UE, over a radio interface and measures information relating to a data transmission rate over the radio interface and an amount of a downlink packet queue in the base station associated with the UE communication. In one embodiment, the base station sends at least some of the measurement information to the network node. A process controller in the network node processes the measurement information to determine a desired amount to be stored in the downlink packet queue. The process controller determines a commanded bit rate to transmit data from the network node to the downlink packet queue based on the determined desired amount and transmits data to the radio base station in accordance with the commanded bit rate.

Abstract: Embodiments herein relate to a method performed by a first communication node (110; 121) for determining the position of a second communication node (122) in a wireless communications network (100). The first communication node (110; 121) transmits a timing measurement message to the second communication node (122) as a beamformed transmission based on channel sounding feedback information received from the second communication node (122). The first communication node (110; 121) also receives an acknowledgement message from the second communication node (122) for the timing measurement message in the beamformed transmission. Furthermore, the first communication node (110; 121) determines the position of the second communication node (122) at least partly based on a transmission time of the timing measurement message and a reception time of the acknowledgement message. Embodiments of the first communication node (110; 121) are also described.