Abstract: A method and network node for online coordinated multi-cell precoding are provided. According to one aspect, a method includes receiving from each of the plurality of service providers a virtual precoder matrix determined by the corresponding service provider. The method also includes determining a precoder matrix by minimizing a precoding deviation from a virtualization demand of the network subject to at least one power constraint, the virtualization demand being based at least in part on a product of a channel state matrix and a virtual precoder matrix. The method further includes applying the determined precoder matrix to signals applied to a plurality of antennas to achieve a sum of throughputs for the plurality of service providers that is greater than a sum of throughputs for the plurality of service providers achievable when the virtual precoder matrices are applied to the signals.

Abstract: A network node of a communications network configured to provide Citizen Broadband Radio Service (CBRS) to at least one end user device (EUD) in a coverage area of the network node. The network node comprises: at least one processor; and a memory storing software instructions configured to control at least one processor to perform steps of: detecting interference from at least one aggressor device in the network; and reporting the detected interference to at least one of a Spectrum Access System (SAS) and a co-existence manager (CxM) of the communications network.

Abstract: A method for performing online convex optimization is provided. The method includes receiving, from two or more worker nodes, a local decision vector and local data corresponding to each of the two or more worker nodes. The method includes performing a multi-step gradient descent based on the local decision vector and the local data received from the two or more worker nodes. Performing the multi-step gradient descent includes determining a global decision vector and corresponding global information. The method includes sending, to each of the two or more worker nodes, the global decision vector and corresponding global information.

Abstract: Embodiments of a method and network node for managing wireless devices (WDs) in a network are disclosed. In some embodiments, the method comprises grouping the plurality of WDs into clusters based at least in part on correlations between channels of the WDs. The method also includes determining beam forming weights for each cluster, the grouping into clusters and the determining of beam forming weights being performed to minimize a total transmit power to the plurality of WDs.

Abstract: There is provided mechanisms for transmission of NR control information in an LTE downlink subframe. At least two symbols in the subframe are allocatable for LTE control information. A method is performed by a network node. The method comprises configuring resource elements for LTE transmission and resource elements for NR transmission within the subframe such that NR control information is allocated to resource elements of at least one symbol within the at least two symbols allocatable for the LTE control information in the subframe. The method comprises initiating transmission of the subframe from co-sited antennas, such that the resource elements for LTE transmission and the resource elements for NR transmission are transmitted from the co-sited antennas.

Abstract: A method, system and apparatus are disclosed for interference robust adaptive Time Division Duplex (TDD) configuration with multiple Transmit Receive Points (multi-TRP). A method implemented in a wireless node includes determining at least one time resource in which at least a part of a first time division duplex, TDD, configuration used in a first network supported by a first network node does not correspond to a second TDD configuration used in a second network supported by a second network node; and applying at least one interference mitigation procedure during at least the at least one time resource.

Abstract: A method and network node configured to perform wireless network virtualization to allocate resources of an infrastructure provider (InP) among a plurality of service providers (SPs) are provided. According to one aspect, a method in a network node includes, in each of a plurality of successive time slots in a time interval, T: receiving precoding feedback information from each SP, allocating a virtual transmit power to each cell served by an SP based at least in part on the received precoding feedback information and determining a precoding matrix for each SP. The method also includes minimizing a loss function based at least in part on the received precoding feedback information received in multiple previous time slots.

Abstract: A method and network node for distributed coordinated downlink precoding for multi-cell multiple input multiple output (MIMO) wireless network virtualization are disclosed. According to one aspect, a network node is configured to, in each of a plurality of successive transmission time periods: transmit to each of a plurality of SPs a corresponding set of channel information; receive from each of the plurality of SPs a service demand and a normalized precoding matrix, the normalized precoding matrix being determined by the corresponding SP based on the corresponding set of channel information; allocate a virtual transmit power to each of the plurality of SPs based at least in part on the received service demands and normalized precoding matrices; and determine a downlink precoding matrix to transmit messages to WDs, the downlink precoder matrix being based at least in part on the received service demands and normalized precoding matrices.

Abstract: There is provided a method in a first network node (e.g. CBSD) for negotiating AAS antenna pattern and for radio planning. The method comprises: determining (310) one or more cell shaping parameters; sending (320) the determined cell shaping parameters to a second network node (e.g. SAS or CxM); receiving (330) an allocation of resources based on the determined cell shaping parameters. Another method is disclosed as well and may comprise: receiving (160) an envelope of radio frequency power for maximizing a coverage area, from a second network node (e.g. SAS); determining (170) a beam pattern based on the received envelope; sending (180) the determined beam pattern to the second node.

Abstract: A method and network node for classification of interference connections between Citizens Broadband Radio Service Devices, CBSDs, in a wireless communication network are provided. According to one aspect, a method includes calculating an interference level, the calculation being based on whether two interfering CBSDs are operating in one of the alternate channels, adjacent channels and the same channel. The method also includes comparing the calculated interference level to a threshold to determine a classification of an interference connection.

Abstract: A method and network node for online coordinated multi-cell precoding are provided. According to one aspect, a method includes receiving from each of the plurality of service providers a virtual precoder matrix determined by the corresponding service provider. The method also includes determining a precoder matrix by minimizing a precoding deviation from a virtualization demand of the network subject to at least one power constraint, the virtualization demand being based at least in part on a product of a channel state matrix and a virtual precoder matrix. The method further includes applying the determined precoder matrix to signals applied to a plurality of antennas to achieve a sum of throughputs for the plurality of service providers that is greater than a sum of throughputs for the plurality of service providers achievable when the virtual precoder matrices are applied to the signals.

Abstract: A method, system and apparatus are disclosed. A network node is configured to communicate with a wireless device, WD, where the network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to: receive an indication whether the WD is to cache at least one file based on spatial statistics of a cache-enabled device-to-device, D2D, network collected by the WD, and perform spectrum allocation based on the received indication.

Abstract: A method performed by a user device having a multiple connectivity configuration with a plurality of radio links to a plurality of network nodes in a radio communication network is provided. The user device can determine a change occurred in an amount of uplink data available for transmission in a first uplink buffer of the user device on a first radio link of a plurality of radio link to first network node. Responsive to the change, the user device can trigger a buffer status report for transmission to a second network node of the plurality of network nodes on a second radio link of the plurality of radio links for which a change in an amount of uplink data available for transmission in a second uplink buffer was not determined. A method performed by the first network node is also provided.

Abstract: This disclosure pertains to a method for operating a terminal (10) in a wireless communication network. The method comprises performing a Listen-Before-Talk, LBT, procedure on at least one LBT communication link of a set of LBT communication links, wherein performing the LBT procedure is based on 475 information received by the terminal (10), the received information pertaining to operational conditions of the LBT communication links of the set of LBT communications links. The disclosure also pertains to related devices and methods.

Abstract: A method, system and apparatus are disclosed. According to one or more embodiments, a network node is provided. The network node includes processing circuitry configured to: assign a plurality of wireless devices respective sounding reference signal, SRS, sequences of a common set of SRS sequences where the common set of SRS sequences are shared among a first radio access technology, RAT, and a second RAT, and receive SRS sequences according to the assignment of the respective SRS sequences of the common set of SRS sequences.

Abstract: A method, system and apparatus for sharing of physical random access channel (PRACH) resources between New Radio (NR) and Long Term Evolution (LTE) radio access technologies (RATs) are disclosed. According to one aspect, a network node is provided. The network node includes processing circuitry configured to: receive a physical random access channel, PRACH, signal from a wireless device; correlate the PRACH signal with one of at least two orthogonal sequences from a common set of sequences shared among a first radio access technology, RAT, and a second RAT; and determine whether the wireless device is operating according to one of the first RAT and the second RAT based at least in part on the correlation.

Abstract: There is provided a method in a first network node (e.g. CBSD) for negotiating AAS antenna pattern and for radio planning. The method comprises: determining (310) one or more cell shaping parameters; sending (320) the determined cell shaping parameters to a second network node (e.g. SAS or CxM); receiving (330) an allocation of resources based on the determined cell shaping parameters. Another method is disclosed as well and may comprise: receiving (160) an envelope of radio frequency power for maximizing a coverage area, from a second network node (e.g. SAS); determining (170) a beam pattern based on the received envelope; sending (180) the determined beam pattern to the second node.

Abstract: A method, network node and processor for processing uplink signals transmitted from a wireless device (WD) to provide a combination of quantize-forwarding and decode-forwarding relayed signals in massive multiple input multiple output (MIMO) heterogeneous networks (HetNets). According to one aspect, whether quantize-forwarding or decode-forwarding is used depends on a ratio of a quality of a WD signal received at a Small Cell Base Station (SCBS) to a quality of the WD signal received at a Macro Cell Base Station (MCBS). When the ratio is less than a first threshold, signals received at the SCBS may be quantize-forwarded to the MCBS and when the ratio exceeds a second threshold larger than the first threshold, signals received at the SCBS may be decode-forwarded to the MCBS. When the ratio lies between the first and second threshold, signals received at the SCBS may be quantize-forwarded to the MCB.

Abstract: Regarding a first radio frequency (RF) carrier, a network node of a wireless communication network configures two or more bandwidth parts (BWPs) in the first RF carrier, each BWP aligning with a respective one of two or more other RF carriers positioned within the RF spectrum spanned by the first RF carrier. The node determines a frequency-sharing configuration for each BWP, in dependence on radio resource usage of the respective other RF carrier and configures wireless communication devices to use respective ones of the BWPs. For example, the node determines a resource-usage pattern for control-related signaling conveyed on the other RF carriers and transmits rate-matching information for the BWPs of the first RF carrier. Each BWP occupies RF spectrum used by a respective one of the other RF carriers, and the rate-matching information transmitted for each BWP depends on the resource-usage pattern determined for the respective other RF carrier.

Abstract: A method and apparatus are disclosed for LTE-NR spectrum sharing. In one embodiment, a method for a wireless device (WD) includes obtaining a configuration of at least one reference signal of a first radio access technology that overlaps in time with a Multimedia Broadcast Multicast Service Single Frequency Network, MBSFN, subframe of a second radio access technology. In another embodiment, a method for a network node includes configuring at least one reference signal of a first radio access technology to overlap in time with a MBSFN subframe of a second radio access technology.