Abstract: Method and device(s) for supporting performance of machine learning based CFR and DPD on multiple digital input signals relating to different frequency bands, respectively, in order to signal condition said signals before power amplification and subsequent transmission in said frequency bands by a wireless communication network. The device(s) obtain said multiple digital input signals as complex valued signals. The device(s) perform feature construction that takes said multiple digital input signals as input and provides constructed feature signals according to predefined constructed feature types as output. Said predefined constructed feature types relate to at least the following per complex valued sample of the obtained complex valued multiple digital input signals the real part of the sample, the imaginary part of the sample and at least one of the absolute value of the sample and the phase of the sample.

Abstract: Systems and methods for separate digital predistortion (S-DPD) for multi-band radios are disclosed. In one embodiment, a method of operation of a digital predistortion (DPD) actuator system for a radio node for a wireless network comprises receiving a plurality of input signals (x1, . . . , xB) for a plurality of frequency bands (b1, . . . , bB), respectively. The method further comprises, for each frequency band (bl) of the plurality of frequency bands (b1, . . . , bB), generating a plurality of predistorted signals for the frequency band (bl) based on the plurality of input signals (x1, . . . , xB) and a plurality of Look-Up Tables (LUTs) each having less than B dimensions and combining the plurality of predistorted signals for the frequency band (bl) to provide a combined predistorted signal for the frequency band (bl). In this manner, lower dimensionality LUTs are used, which in turn reduces cost and complexity of the DPD system.

Abstract: Method and device(s) for performing digital predistortion, “DPD”, on multiple digital input signals to be transmitted in different frequency bands, respectively, of a wireless communication network. The frequency bands being associated with linearization bandwidths, respectively, for application of the DPD. Said DPD is performed in two parts: A first DPD part with a first DPD performed for each of said input signals over the signal's full linearization bandwidth using a first set of non-linear terms and basis functions. A second DPD part where another, second DPD is performed for each of said input signals over the signal's linearization bandwidth except where the linearization bandwidth covers the signal's frequency band using another, second set of non-linear terms and basis functions. Predistorted multiple digital output signals are provided based on both of said performed DPDs.

Abstract: A method for crest factor reduction (CFR). The method includes: generating a signal, xs(t); generating a vector, x(t), of size N×1 based on xs(t), wherein N>1; generating a clipping signal vector, z(t), based on x(t), wherein z(t) is a vector of size N×1; producing a transformed signal vector, y(t), based on z(t), wherein y(t) is a vector of size N×1; and generating an output signal vector, xp(t), based on y(t) and x(t), wherein generating xo(t) comprises subtracting y(t) from x(t) and xo(t) is a vector of size N×1.

Abstract: There is provided mechanisms for enabling linearization of a non-linear electronic device. A method is performed by a linearizer device. The method comprises receiving an input signal destined to be input to the non-linear electronic device. Input-output characteristics of the non-linear electronic device is represented by a model. The model is defined by a mathematical expression, and wherein input-output characteristics of the linearizer device is given by the linearization function. The linearization function is determined by applying a function recursion to the mathematical expression of the model. The method comprises obtaining an output signal by subjecting the input signal to the linearization function. The method comprises providing the output signal, instead of the input signal, as input to the non-linear electronic device, thereby enabling linearization of the non-linear electronic device.

Abstract: A method for crest factor reduction (CFR). The method includes: generating a signal, xs(t); generating a vector, x(t), of size N×1 based on xs(t), wherein N>1; generating a clipping signal vector, z(t), based on x(t), wherein z(t) is a vector of size N×1; producing a transformed signal vector, y(t), based on z(t), wherein y(t) is a vector of size N×1; and generating an output signal vector, xp(t), based on y(t) and x(t), wherein generating xo(t) comprises subtracting y(t) from x(t) and xo(t) is a vector of size N×1.

Abstract: Embodiments herein relate to a method performed by a wireless device (10) for managing communication in a wireless communication network. The wireless device receives reference signals from one or more radio network nodes. The wireless device (10) estimates to what extent the received reference signals are received spatially diversified based on a radio network node indication indicating from which radio network node the reference signal was sent, and/or on a beam indication indicating in what direction the reference signal was sent toward the wireless device. The wireless device (10) then generates a measurement report by adding selected reference signals into the measurement report, which reference signals are selected for simultaneous multiple transmissions of data to the wireless device (10) taking into account the estimated extent that the received reference signals are received spatially diversified.

Abstract: Systems and/or methods of receiving communications at a receiving node that communicates with a transmitting node over a first communication channel and a second communication channel are disclosed. The method includes receiving, at the receiving node, a request-to-send message from the transmitting node over the first communication channel, the request-to-send message indicating that the transmitting node has data to be transmitted to the receiving node over the second communication channel, determining at the receiving node whether the second communication channel is available for reception of the data, in response to determining that the second communication channel is available for reception of the data, reserving the second communication channel for use by the transmitting node, and receiving the data from the transmitting node over the second communication channel.

Abstract: A method performed by a wireless communication device for reporting signal quality measurements. The wireless communication device operates in a wireless communications network and comprises a first wireless network configured with single Demodulation Reference Signals (DMRS) and a second wireless network configured with dual DMRS. The wireless communication device receives a set of DMRS from the first wireless network and a set of dual DMRS from the second wireless network. The wireless communication device selects any one or more out of a first activity and a second activity based on the speed of the wireless communication device.

Abstract: Embodiments herein relate to a method performed by a wireless device for managing communication in a wireless communication network. The wireless device receives reference signals from one or more radio network nodes. The wireless device estimates to what extent the received reference signals are received spatially diversified. The wireless device then generates a measurement report by adding selected reference signals into the measurement report, which reference signals are selected for simultaneous multiple transmissions of data to the wireless device taking into account the estimated extent that the received reference signals are received spatially diversified. The wireless device then transmits the measurement report to a radio network node in the wireless communication network.

Abstract: A method performed by a wireless communication device for reporting signal quality measurements. The wireless communication device operates in a wireless communications network and comprises a first wireless network configured with single Demodulation Reference Signals (DMRS) and a second wireless network configured with dual DMRS. The wireless communication device receives a set of DMRS from the first wireless network and a set of dual DMRS from the second wireless network. The wireless communication device selects any one or more out of a first activity and a second activity based on the speed of the wireless communication device.

Abstract: Method for transmitting signals on a transmission channel (103), comprising the steps of detecting (S101) a channel occupancy of a transmission channel (103) by processing data from a receiving path (105) after an activation of a transmission path (111); and deactivating (S102) the transmission path (111) on the basis of the detected channel occupancy.

Abstract: According to certain embodiments, a method by a radio node (110, 115) operating in multiple modes for power detection includes operating in a first mode. While operating in the first mode power levels of transmissions on a channel are compared to a first threshold to determine whether the channel is free. While operating the radio node (110, 115) in the first mode, power levels within a specified range are detected during a first time period. In response to detecting the power levels within the specified range during the first time period, the radio node (110, 115) is switched to a second mode that is a duty-cycle mode. While operating the radio node (110, 115) in the second mode, the power levels of the transmissions on the channel are compared to a second threshold during a first portion of a duty cycle and to a third threshold during a second portion of the duty cycle to determine whether the channel is free. The third threshold is different from the second threshold.

Abstract: Embodiments herein relate to a method performed by a wireless device (10) for managing communication in a wireless communication network. The wireless device receives reference signals from one or more radio network nodes. The wireless device (10) estimates to what extent the received reference signals are received spatially diversified based on a radio network node indication indicating from which radio network node the reference signal was sent, and/or on a beam indication indicating in what direction the reference signal was sent toward the wireless device. The wireless device (10) then generates a measurement report by adding selected reference signals into the measurement report, which reference signals are selected for simultaneous multiple transmissions of data to the wireless device (10) taking into account the estimated extent that the received reference signals are received spatially diversified.

Abstract: A technique for performing a clear channel assessment (CCA) in an unlicensed radio frequency (RF) spectrum is described. The CCA is performed for transmitting data (420) according to a first radio access technology (RAT) in coexistence with a second RAT. As to a method aspect of the technique, signals (411) are received in the unlicensed RF spectrum. The received signals (411) are processed according to an operating state. The processing in a first operating state (402) causes a first delay that is greater than a second delay caused by the processing in a second operating state (404). The operating state depends on the presence of data (420) to be transmitted according to the first RAT in the unlicensed RF spectrum. The CCA is performed based on the processed signals.

Abstract: Embodiments herein relate to a method performed by a wireless device for managing communication in a wireless communication network. The wireless device receives reference signals from one or more radio network nodes. The wireless device estimates to what extent the received reference signals are received spatially diversified. The wireless device then generates a measurement report by adding selected reference signals into the measurement report, which reference signals are selected for simultaneous multiple transmissions of data to the wireless device taking into account the estimated extent that the received reference signals are received spatially diversified. The wireless device then transmits the measurement report to a radio network node in the wireless communication network.

Abstract: Systems and/or methods of receiving communications at a receiving node that communicates with a transmitting node over a first communication channel and a second communication channel are disclosed. The method includes receiving, at the receiving node, a request-to-send message from the transmitting node over the first communication channel, the request-to-send message indicating that the transmitting node has data to be transmitted to the receiving node over the second communication channel, determining at the receiving node whether the second communication channel is available for reception of the data, in response to determining that the second communication channel is available for reception of the data, reserving the second communication channel for use by the transmitting node, and receiving the data from the transmitting node over the second communication channel.

Abstract: Systems and methods of performing a listen-before-talk (LBT) radio protocol in a communication system are provided. In one exemplary embodiment, a method (600) by a radio component (403, 503) of a wireless device (400, 500) may include receiving (601), by the radio component, from a baseband component (401, 501) of the wireless device, transmit data during a transmit-time interval associated with a synchronous wireless communication system. Further, the method may include, detecting (603), by the radio component, that a medium associated with an asynchronous communication system is available. Also, in response to detecting, the method may include, transmitting (605), by the radio component, the transmit data on the medium during the transmit-time interval.

Abstract: Systems and/or methods of receiving communications at a receiving node that communicates with a transmitting node over a first communication channel and a second communication channel are disclosed. The method includes receiving, at the receiving node, a request-to-send message from the transmitting node over the first communication channel, the request-to-send message indicating that the transmitting node has data to be transmitted to the receiving node over the second communication channel, determining at the receiving node whether the second communication channel is available for reception of the data, in response to determining that the second communication channel is available for reception of the data, reserving the second communication channel for use by the transmitting node, and receiving the data from the transmitting node over the second communication channel.

Abstract: A technique for performing a clear channel assessment (CCA) in an unlicensed radio frequency (RF) spectrum is described. The CCA is performed for transmitting data (420) according to a first radio access technology (RAT) in coexistence with a second RAT. As to a method aspect of the technique, signals (411) are received in the unlicensed RF spectrum. The received signals (411) are processed according to an operating state. The processing in a first operating state (402) causes a first delay that is greater than a second delay caused by the processing in a second operating state (404). The operating state depends on the presence of data (420) to be transmitted according to the first RAT in the unlicensed RF spectrum. The CCA is performed based on the processed signals.