Abstract: A Certification Authority (CA) server for issuing digital certificates generates a first digital certificate associated with a first public key of the device and calculates an update factor for the first private key. Based on the first public key, the calculated update factor, and a predefined public system parameter, the CA server calculates a second public key for a determined time period for the device. The CA server generates a second digital certificate valid at the determined time period and associated with the second public key and sends the second digital certificate to the device. A device may calculate an update factor for a stored first private key, calculates a second private key based on the calculated update factor and the first private key, receives from the CA server a second digital certificate associated with a second public key, and validates the device based on the second digital certificate.

Abstract: The present disclosure provides an apparatus for network slicing, and an apparatus for network slice management, which are usable to support and optimize multi-slice services. The apparatuses provide functional enhancements within different layers of a network architecture. The apparatus for network slicing is configured to determine at least two correlated communication traffic flows for a service, and to bind the at least two correlated communication traffic flows. Further, it is configured to generate, and preferably expose, binding information. The apparatus for network slice management is configured to convert a service requirement of a tenant/application into a joint performance parameter in correlated network slice instances. Further, it is configured to determine a resource allocation for at least one of the network slice instances based on the joint performance parameter.

Abstract: A transmitter Continuous-Variable Quantum Key Distribution (CV-QKD) device stores and transmits a quantum signal over a communication channel. A receiver CV-QKD device receives the quantum signal via the communication channel and via a reception band. The receiver CV-QKD device determines a quantum communication channel. The receiver CV-QKD device communicates the determined quantum communication channel to the transmitter CV-QKD device over an authenticated communication channel. The transmitter CV-QKD device obtains a modified quantum signal by modifying the stored quantum signal based on the determined quantum communication channel. The transmitter CV-QKD device and the receiver CV-QKD device generate a secret key using the modified quantum signal and the received quantum signal.

Abstract: A transmitter Continuous-Variable Quantum Key Distribution (CV-QKD) device stores and transmits a quantum signal over a communication channel. A receiver CV-QKD device receives the quantum signal via the communication channel and via a reception band. The receiver CV-QKD device determines a quantum communication channel. The receiver CV-QKD device communicates the determined quantum communication channel to the transmitter CV-QKD device over an authenticated communication channel. The transmitter CV-QKD device obtains a modified quantum signal by modifying the stored quantum signal based on the determined quantum communication channel. The transmitter CV-QKD device and the receiver CV-QKD device generate a secret key using the modified quantum signal and the received quantum signal.

Abstract: A radio access network (RAN) control unit for determining a functional operation of a dynamic small cell, in particular an unplanned small cell, a nomadic node or a relay, in a radio communication network is disclosed. The radio communication network includes at least one network slice associated with at least one user equipment (UE) and at least one radio channel connecting the at least one UE to the radio communication network. The RAN control unit includes a processor configured to determine a functional operation of the dynamic small cell (DSC) based on information based on channel measurements of the at least one radio channel and/or requirement information of the at least network one slice, and/or estimated or measured performance of the RAN, and/or location information of the DSC.

Abstract: The invention relates to a sidelink communication device that includes a transceiver and a processor. The transceiver includes a plurality of antennas and is configured to communicate, using one or more of the plurality of antennas, with at least one neighboring sidelink communication device using one or more sidelink radio resources of a plurality of sidelink radio resources allocated by a network entity. The processor is configured to determine a measure of the ability of the sidelink communication device to suppress interference to and/or from at least one other neighboring sidelink communication device using one or more of the plurality of antennas. The transceiver is further configured to transmit, to the network entity, information about the measure for the ability of the sidelink communication device to suppress the interference for allocation of the one or more sidelink radio resources by the network entity.

Abstract: A transmitter provides an optical signal for transmitting a quantum key over a network. The transmitter comprises a first generator configured to generate a quantum signal, the quantum signal comprising a sequence of frames. The transmitter comprises a second generator configured to generate a pilot signal. The pilot signal comprises a sequence of signatures that is in synchrony with the sequence of frames. The transmitter comprises an optical modulator configured to generate the optical signal by modulating an optical carrier based on the quantum signal and the pilot signal. A corresponding receiver is proposed for receiving the optical signal and for extracting the quantum key.

Abstract: The present invention provides a control device for providing network-slice-aware licensed assisted access (LAA). The control device is configured to determine, for at least one slice-type, an unlicensed frequency band and/or an LAA configuration parameter. Furthermore, the control device is configured to provide, to at least one radio access node, configuration information comprising the determined frequency band and/or the LAA configuration parameter. The present invention also provides a radio access node for configuring network-slice-aware LAA. The radio access node is configured to receive, from a control device, configuration information comprising, for at least one slice-type, a frequency band and/or an LAA configuration parameter. The radio access node is further configured to request and receive, from a UE, a channel measurement report on one or more unlicensed frequency bands.

Abstract: A user equipment is configured to be connected to a first cellular communication network and a second cellular communication network. The user equipment comprises: a communication interface configured to transmit a first message to the second communication network, when the user equipment is connected to the first communication network and is triggered to connect additionally to the second communication network, wherein the first message comprises information about the first communication network.

Abstract: A continuous variable quantum key distribution system comprises a transmitter and a receiver. The first quantum signal has a first polarization and is associated with first quadrature components and the second quantum signal has a second polarization and is associated with second quadrature components. The receiver receives the quantum signals transmitted by the transmitter via a quantum communication channel; estimates a channel matrix representing the polarization rotation of the first and second polarization caused by the quantum communication channel; modifies the received first and second quantum signals on the basis of the polarization rotation; and uses the modified received first and second quantum signals for generating a secret key.

Abstract: The present application concerns an encoding device comprising a FC 11 configured to generate m FC-output-bit-sequences by executing m polar encoding steps upon m FC-input-bit-sequences that comprise frozen and unfrozen bits, wherein m?2. In an i-th polar encoding step of the m polar encoding steps at least one frozen bit is based on at least one unfrozen bit. The present application also concerns a decoding device comprising a processor configured to decode successively a polar-coded-bitstream comprising m-polar decoding steps, wherein m?2. In an i-th polar decoding step of the m polar decoding steps at least one frozen bit is based on at least one unfrozen bit. Further, the present application concerns also correspondingly arranged encoding and decoding methods.

Abstract: A signal transmitter and a signal receiver for interpreting a received message are provided. The receiver is configured to perform the steps of: decoding a first part of the message using a channel decoding scheme with a predefined set of decoding parameters to form a first data block; and subsequently decoding a second part of the message using the channel decoding scheme with decoding parameters that are at least partially dependent on the content of the first data block.

Abstract: A first user equipment (UE) comprising a processor adapted to execute the following operations to assist a handover of a second UE from a source network apparatus to a target network apparatus: maintain a sidelink connection with the second UE, maintain and/or establish a cellular connection, in particular with the target network apparatus, report to the target network apparatus a link state information, based on the link state information received from the second UE through the sidelink connection, receive from the target network apparatus a first control information calculated based on the link state information and send to the second UE through the sidelink connection a second control information, based on the first control information, to assist the handover of the second UE to the target network apparatus.

Abstract: The disclosure relates to a transmitter device for use in a wireless communication system, the transmitter device comprising: a processor configured to select a numerology set from a quantity of at least two numerology sets, wherein the numerology set identifies a set of transmission parameters for transmitting a transmit signal over a transmission channel, wherein the selection is based on a Signal-to-Noise Ratio (SNR) of the transmission channel; and a transmitter, configured to transmit the transmit signal based on the selected numerology set.

Abstract: A first user equipment (UE) comprising a processor adapted to execute the following operations to assist a handover of a second UE from a source network apparatus to a target network apparatus: maintain a sidelink connection with the second UE, maintain and/or establish a cellular connection, in particular with the target network apparatus, report to the target network apparatus a link state information, based on the link state information received from the second UE through the sidelink connection, receive from the target network apparatus a first control information calculated based on the link state information and send to the second UE through the sidelink connection a second control information, based on the first control information, to assist the handover of the second UE to the target network apparatus.

Abstract: Embodiments of the present disclosure provide a Radio-resource management (RRM) configuration device, and corresponding method, for a network comprising a plurality of access nodes. The device is configured to divide the plurality of access nodes of the network into clusters, and to select at least one access node of each cluster as RRM controller. Further, the device is configured to determine the non-selected access nodes of each cluster as slave nodes, and to select, for each cluster, an RRM split between each slave node and the at least one RRM controller of the respective cluster. The device is also configured to transmit, to each access node, information about its cluster, the at least one RRM controller of the cluster, and the selected RRM split.

Abstract: The disclosure relates to a transmission device, comprising: a processor configured: to generate a multicarrier signal based on a combination of data symbols and reference symbols, wherein the multicarrier signal comprises a first plurality of inband subcarriers and a second plurality of out-of band (OOB) subcarriers, and to precode the multicarrier signal based on a mapping function with respect to the first plurality of inband subcarriers and the second plurality of out-of band subcarriers, wherein the mapping function is configured to mitigate the OOB subcarriers.

Abstract: The disclosure relates to a radio device, in particular a user equipment, for communication with a radio cell, the radio device comprising: a processor, configured: to generate a radio frame comprising a first data sequence and a second data sequence, to arrange the first data sequence within the radio frame in a time interval that is non-overlapping with respect to a predetermined time interval of a first data sequence of another radio device with another adjacent radio cell, and to apply an unequal power allocation for generating the first data sequence and the second data sequence.

Abstract: An input audio signal comprises a plurality of input audio channels. A KLT-based pre-processor transforms the plurality of input audio channels into a plurality of eigenchannels and provides metadata associated with the plurality of eigenchannels. Each eigenchannel is associated with an eigenvalue and an eigenvector. The metadata allows reconstructing the plurality of input audio channels on the basis of the plurality of eigenchannels. A selector selects a subset of the plurality of eigenvectors corresponding to a plurality of selected eigenchannels on the basis of a geometric mean of the eigenvalues. An eigenchannel encoder encodes the plurality of selected eigenchannels. A metadata encoder encodes the metadata.

Abstract: The proposed method for localizing a target sound source from a plurality of sound sources, wherein a multi-channel recording signal of the plurality of sound sources comprises a plurality of microphone channel signals, comprises converting each microphone channel signal into a respective channel spectrogram in a time-frequency domain, blindly separating the channel spectrograms to obtain a plurality of separated source signals, identifying, among the plurality of separated source signals, the separated source signal that best matches a target source model, estimating, based on the identified separated source signal, a binary mask reflecting where the target sound source is active in the channel spectrograms in terms of time and frequency, applying the binary mask on the channel spectrograms to obtain masked channel spectrograms, and localizing the target sound source from the plurality of sound sources based on the masked channel spectrograms.