Abstract: A network node (110) and a method therein for managing radio, resources are disclosed. The radio resources are dedicated for beacon (121, 122) signaling, fey a first device; (131) and a second device (132), in conjunction with device-to-device, “D2D”, discovery. The first device: (131) is stationary and the second device (132) is non-stationary. The network node (110) selects (202) a first and a second set of radio resources out of the radio resources. The first and second sets are dedicated for beacon signaling by the first device (131) and the second device (132), respectively. The first set of radio resources Is non-overlapping with the second set of radio resources. Then the network node (110) schedules (203) a specific radio resource of the first set of radio resources to the first device (131). Next, the network node (110) sends (204) information about the scheduled specific radio resource to the first device (131).

Abstract: A network node and a method therein for managing a device-to-device, D2D, communication link between a first device and a second device are disclosed. The network node determines a threshold value based on interference information relating to interference of the first device. The threshold value indicates an upper limit for allowable transmit power of the first device when transmitting on the D2D communication link. Then, the network node sends the threshold value to the first device. Subsequently, the network node receives, from the first device, a message indicating that power of transmission, by the first device, on the D2D communication link exceeds the threshold value.

Abstract: A method in a base station comprising a memory storing one or more service types and a radio interface that communicates with a device. The method includes arranging a service scheduling by assigning at least one time slot to a service type and transmitting information on said service scheduling to a device.

Abstract: Mobility-based radio resource assignment methods, systems and devices can assign user equipment to different nonoverlapping groups of radio resources depending on mobility of the user equipment. The groups of radio resources are nonoverlapping in time, frequency and/or code. For example, the groups of radio resources can include different pilot symbol densities, link adaptation and/or scheduling algorithms. The radio resources may be Long Term Evolution (LTE) radio resources.

Abstract: A method in a D2D controller for sending a configuration message to use a communication mode to a first device, wherein the first device is configured to enable communication with a second device through a network-controlled D2D communication mode, wherein the D2D controller D2D controller, the first device and the second device are comprised in a wireless network, and wherein the method comprises: obtaining (201) a first speed of the first device with respect to the D2D controller, and, when the first speed exceeds a first threshold, sending (207) a first configuration message to the first device to use a first communication mode, wherein the first communication mode is one of the following communication modes: a cellular communication mode, and a device-controlled D2D mode. A method in the first device for configuring the first device to use a communication mode, according to a message received from the D2D controller.

Abstract: There is disclosed a backhaul property managing mechanism configured to collect backhaul properties from at least one network node, wherein the backhaul properties comprises performance metrics for communication with a core network for the respective network node; provide collected backhaul properties to at least one user equipment, UE, being in position where communication with the at least one network node is feasible. A UE, base station, methods therefor and computer program for implementing the methods are also disclosed.

Abstract: A method in a first wireless device for handling Device to Device, D2D, communication between the first wireless device and a second wireless device is provided. The first wireless device sends a beacon signal to be received by the second wireless device. The beacon signal announces that the first wireless device is available for D2D communication. The beacon signal is sent on a first channel where the first wireless device is interfered. The beacon signal indicates that no response to the beacon signal shall be sent on the first channel.

Abstract: A method in a configuration node of a cellular network for selecting, from a set of channels of at least one primary system, at least one channel for allocation to base stations of the cellular network is provided. The method comprises the steps: Receiving, from a database, a set of channels of the at least one primary system; Observing a quality ranking of the channels of the received set of channels; Determining an optimal number of channels for the cellular network on the basis of the ranked set of channels such that a signal quality in the cellular network is optimized; and Selecting from the received set of channels on the basis of the quality ranking and the determined optimal number of channels, at least one channel for allocation to base stations of the cellular network. A corresponding configuration node is also provided.

Abstract: In a radio system where wireless nodes are in contact, the wireless nodes are enabled to exchange information with adjacent nodes. In addition, distant nodes out of range for direct communication can be communicated with by forwarding data over multiple hops. The wireless nodes are configured to perform sensing of at least one radio resource. A node can be adapted to combine the sensing measurement data into a sensing result, such as an estimate of the probability of whether the resource is free or not. The sensing performed in a node is distributed to at least one other wireless node. Each wireless node can, therefore, access sensing information from at least one other wireless node located in the vicinity of the wireless node. Based on the collective information from at least one other node, a wireless node can make an improved decision if a particular radio resource is free to use or not.

Abstract: Embodiments comprise a method and a corresponding device (11) for facilitating connection to a wireless hotspot (5) with associated coverage area (7). The device (11) obtains local CPC information (27) which relates to the hotspot (5). The device (11) then transmits the local CPC information (27) in an area that corresponds to the coverage area (7) of the hotspot (5) The local CPC information (27) may toe transmitted using radio resources which have been reserved for use in outband broadcast. CPC transmissions. The transmission of local CPC information (27) may fee performed using a resource sharing scheme (200b), Embodiments further comprise a method in a user equipment and a corresponding user equipment (9). The user equipment (9) receives, a transmission (69;87) of local CPC information (27) relating to a wireless hotspot (5) and may then use the received local CPC information to efficiently connect (71; 93) to the hotspot (5).

Abstract: Some example embodiments may be directed towards improving a secondary system channel estimation by using a primary channel estimate. Specifically, some example embodiments may be directed towards a method in an user equipment, which may be comprised in a Radio Network, for estimating a primary and a secondary channel. The method may comprise receiving from at least one Base Station a combined wireless communication signal through at least a portion of the primary channel. The method may also comprise determining an estimation of the primary channel. The method may further comprise determining an estimation of the secondary channel. The method may further comprise determining at least one common sub-component between the estimations of the primary and secondary channels, and determining an updated estimation of the secondary channel based on the at least one common sub-component.

Abstract: A local radio access information transmitter (LRAIT) may be used in a communications area serviced by multiple different radio access technologies (RATs) allocated to different radio resources in different locations in the communications area. Each RAT is associated with RAT radio transceiver(s) for serving UEs in the communications area. The LRAIT is in addition to the RAT transceivers and located near a hotspot service area in the communications area. The LRAIT determines local radio access information (LRAI) including different RATs available in the hotspot service area and frequenc(ies) of operation allocated to each RAT in the hotspot service area, sends a registration message to a wide area radio access information controller, and based on a response therefrom, determines what radio resources to use to transmit the LRAI signals. The LRAIT transmits the LRAI signals for receipt by UEs in the hotspot service area using those radio resources.

Abstract: The antenna weight selection solution disclosed herein selects antenna weights for a multiple antenna communication system that transmits uplink or downlink data using multiple radiation patterns based on channel variability metrics determined for two or more sets of candidate antenna weights. In so doing the antenna weight selection solution disclosed herein reduces the channel variability associated with data transmissions, and therefore reduces the amount of feedback and/or the feedback rates required for the multiple antenna communication system.

Abstract: Some example embodiments may be directed towards a method in a network node, which may be comprised in a Radio Network, for transmitting a combined wireless communication signal. The combined wireless communication signal may comprise a primary and a secondary signal component. The method may comprise transmitting to an user equipment the secondary signal component according to a secondary transmission scheme such that the secondary signal component at least partially overlaps with the primary signal component with respect to a signal domain. The method may also comprise simultaneously, suppressing at least one portion of the secondary signal component during a transmission of the primary signal component. Some example embodiments may be directed towards a method in an user equipment, which may be comprised in a Radio Network, for estimating the combined communication channel. The method may comprise receiving the combined wireless communication signal.

Abstract: Wireless nodes for use in a radio system are provided. A wireless node for use in a radio system may include a transmit and receive unit configured to request sensing information of at least one radio resource from at least one other wireless node of the radio system, and to receive the sensing information of the at least one radio resource from the at least one other wireless node of the radio system. The wireless node may include a sensing unit configured to determine whether a particular radio resource among the at least one radio resource is free to use based on the sensing information received from the at least one other wireless node. Related methods are also provided.

Abstract: The invention presents methods and corresponding device relating to cooperative spectrum sensing. First a candidate set of sensors that can participate in an occasion of cooperative spectrum sensing is obtained. A cost formula for calculating a cost associated with using sensors from the candidate set in the cooperative spectrum sensing is then defined (75; 107, 97). The candidate set is partitioned (29; 14, 145) into an active set and a passive set. The active set contains any sensor (s) from the candidate that is to participate in the cooperative spectrum sensing. The passive set includes any sensor (s) that is not to participate in the cooperative spectrum sensing. The partitioning of the candidate set is done by applying an optimization procedure (79, 81, 83; 111, 113, 115) which performs a constrained optimization of the cost in accordance with the defined cost formula.

Abstract: In an example embodiment, a network node transmits secondary signal component of a combined wireless communication signal to a user equipment. The combined wireless communication signal includes the secondary signal component and a primary signal component. Secondary pilot resources of the secondary signal component are dynamically shifted relative to primary pilot resources of the primary signal component by an amount that is based on whether a current estimation procedure at the user equipment is a primary channel estimation procedure or a secondary channel estimation procedure. In a corresponding example embodiment, the user equipment receives the combined wireless communication signal with the dynamically shifted pilot resources. The user equipment estimates the primary channel in the primary channel estimation procedure and estimates the secondary channel in the secondary channel estimation procedure.

Abstract: Mobility-based radio resource assignment methods, systems and devices can assign user equipment to different nonoverlapping groups of radio resources depending on mobility of the user equipment. The groups of radio resources are nonoverlapping in time, frequency and/or code. For example, the groups of radio resources can include different pilot symbol densities, link adaptation and/or scheduling algorithms. The radio resources may be Long Term Evolution (LTE) radio resources.

Abstract: The present invention relates to the technical field of dynamic spectrum access. Synchronization of quiet periods for spectrum sensing can significantly benefit sharing of available secondary access spectrum between two or more wireless communication systems in the same geographic region. The object of the present invention is to provide a methodology by which quiet periods can be synchronized in time between different secondary access wireless communication systems. Quiet Period Clients (QPC) of secondary access wireless communication systems are adapted to send requests to a Quiet Period Server (QPS) to obtain a quiet period rule set. The QPC receives from the QPS an answer specifying the quiet period rule set, and optional quiet period synchronization information. The systems perform their transmissions in accordance with the received rules.

Abstract: Method and arrangement in a network node for improving conditions for ground-based positioning of mobile terminals in a wireless communication system are disclosed. The method and arrangement concerns adaptation of an antenna arrangement associated with the network node, so that a virtual positioning cell is formed in a positioning radio resource, in which positioning reference signals are transmitted or received. In one exemplary embodiment, the antenna arrangement is adapted to form the virtual positioning cell by changing the radiation pattern of at least one antenna used for communication of user data traffic.