Abstract: Various example embodiments for supporting forward error correction (FEC) in a communication system are presented. Various example embodiments for supporting FEC in a communication system may include selection of a FEC setting (e.g., an amount of puncturing and/or shortening of a FEC code, a FEC code, or the like) for a communication channel from a transmitter to a receiver based on channel characteristic information of the communication channel from the transmitter to the receiver (e.g., transfer function information, channel loss information, noise characteristic information, error information (e.g., bit error rate, error modeling, or the like), or the like). Various example embodiments for supporting FEC in a communication system, based on selection of a FEC setting for a communication channel based on channel characteristic information of the communication channel, may be applied within various types of communication systems, including various types of wired and/or wireless communication systems.

Abstract: A technical solution is proposed, which allows mobility experience to be improved by properly tuning Cell Individual Offset (CIO) and/or Time-To-Trigger (TTT) parameters in a wireless communication network. More specifically, information about a number of Handover (HO) attempts made between a source network node and each of its neighboring network nodes for a predefined period of time and a number of occurrences of each type of HO problems during the HO attempts are collected as a data vector. Then, for each “source network node—neighboring network node” pair, two data sub-vectors are obtained by aggregating the numbers from the data vector at a carrier level and an inter-node level, respectively. After that, the two data sub-vectors are used by an ensemble of two Machine-Learning models to predict whether the TTT and/or CIO parameters need to be changed.

Abstract: According to an example embodiment, a radio receiver includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code may be configured to, with the at least one processor, cause the radio receiver to: obtain a data array including a plurality of elements, wherein each element in the plurality of elements in the data array corresponds to a subcarrier in a plurality of subcarriers and to a timeslot in a time interval; obtain a reference signal array representing a reference signal configuration applied during the time interval; implement a neural network; input data into the neural network, wherein the data includes at least the data array and the reference signal array. A radio receiver, a method and a computer program product are disclosed.

Abstract: Example embodiments of the present disclosure relate to machine learning-based channel estimation. According to an example embodiment, a first device determines a signal quality that is expected in transmission of a reference signal from a second device to the first device and receives the reference signal from the second device. The first device selects, based on the expected signal quality, a channel estimation model from a plurality of channel estimation models that have been trained for a plurality of candidate signal qualities for the reference signal. The first device determines, using the selected channel estimation model and based on the received reference signal, channel state information of a communication channel from the first device to the second device. According to this solution, a channel estimation model is dynamically selected for use, depending on a real-time signal quality expected to be gained in transmission of a certain RS.

Abstract: Embodiments relate to reducing logging entries based on contents are disclosed. According to the embodiments, the logging entries are converted into an image with pixels whose values are related with the log content and the image size is reduced by applying an image processing technology. The reduced image is converted back to the log entries. In this way, the number of logging entries is reduced without losing important information.

Abstract: An apparatus includes a TDM PON optical transceiver including a direct-detection optical receiver. The direct-detection optical receiver is configured to demodulate data from a temporal segment of a data modulated optical signal, wherein the optical carrier frequency of the segment varies at a rate of, at least, 1 giga-Hertz per second.

Abstract: There is provided a method for a mobile communication system comprising receiving at a communication device cell configuration information from a network node, and the configuration information being related to cells in a network area comprising a first cell and one or more second cells. Further, the method further comprises receiving at the communication device environment information indicative of overlaps between coverage areas of the first cell and the one or more second cells, and causing transmission of measurement results obtained in the first cell for use in radio resource management of the communication device in the one or more second cells.

Abstract: At least one embodiment relates to power delay profile (PDP) estimation e.g. in 5G systems for channel estimation and for demodulation. The power delay profile is estimated directly in the frequency domain using LMMSE properties based on the knowledge of channel statistics. An example embodiment applies an approximation by estimating the second order statistics of the channel autocorrelation function in time domain represented by the variance of the derivative of raw channel estimates in frequency domain.

Abstract: In one embodiment, an apparatus performs receiving, via two different signal pathways, at least two different signals that are associated with different radio wave characteristics; changing the frequency of signal(s) to provide intermediate signal(s) with each having different frequencies; multiplexing the intermediate signals to allow signals to be transmitted together via a single wired connection; receiving a multiplexed signal via the single wired connection, the multiplexed signal including intermediate further signals having different frequencies, the intermediate further signals also being associated with differing radio wave characteristics; and separating the intermediate further signals into separate signals; changing the frequency of the further signals to provide further signals at a transmission frequency; and transmitting the further signals via the two signal pathways.

Abstract: A PIC comprising an optical edge coupler having a plurality of optical cores within a heterogeneous stack of dielectric layers providing an optical cladding for the optical cores. The layer stack comprises first and second groups of layers, wherein refraction-index differences between individual layers of the same group are much smaller than refraction-index differences between any two layers from different groups. The optical cores are arranged in a plurality of parallel planar arrays enabling a large MFD change. At least one of the arrays is located within the first group of layers, and at least another one of the arrays is located within the second group of layers. End sections of the optical cores are adjacent to an edge of the PIC and may be optically coupled to an external optical fiber or on-chip waveguide of another PIC for a low-loss transfer of optical power therebetween.

Abstract: An electro-optic device, such as an optical modulator, comprises: a driver for generating a plurality of identical time-synchronized copies of an input electrical signal, and a photonic integrated circuit, including an optical waveguide structure and a plurality of phase-modulating electro-optical modulator segments. Each one of the modulator segments configured to receive a respective one of the plurality of the copies of the input electrical signal. Instead of incorporating a required phase delay between the copies of the input electrical signal into the driver structure, a multi-layer interconnect substrate is provided that includes a plurality of insulating layers alternating with a plurality of conductive layers.

Abstract: Automated topology-discovery processes, wherein topology-related information is exchanged among the nodes of a network using data-plane headers of transmitted packets, and without relying on conventional control-plane topology-discovery protocols. For such “control-plane-less” topology discovery, a discovery-enabling Topology Discovery Header (TDH) may be encoded as an extension of the data-plane header. Such TDH can be used, e.g., to carry various types of pertinent information typically relied-upon by the relevant network entities for topology-discovery purposes. In some embodiments, topology discovery is fully migrated from the control plane to the data plane and is substantially integrated into the corresponding Packet Switching Technology. Due to this migration, some features of some conventional control protocols may not be critically needed in the corresponding communication networks.

Abstract: A system includes at least one memory storing computer readable instructions and at least one processor configured to execute the computer readable instructions to cause the system to: identify a network device instance including at least two datasources; obtain a first dataset from a first datasource of the network device instance; obtain a second dataset from a second datasource of the network device instance; merge the first dataset and the second dataset to create a combined dataset; and store the combined dataset in an indexed repository. The first dataset includes network configuration data associated with a network device and hosted by a Persistent Management Agent and the second dataset includes operational data of the network device.

Abstract: Example embodiments of the present disclosure provide a heat dissipation component for a pluggable module, a manufacturing method and an associated electrical device. The heat dissipation component comprises a heat conductor attached to the pluggable module or a heat sink associated with an interface of an electrical device and adapted to conduct heat from the pluggable module to a heat sink, the heat conductor comprising the heat input section adapted to be in thermal contact with the pluggable module; and a heat output section adapted to be in thermal contact with the heat sink; and an elastic assembly coupled to the heat conductor and adapted to, at least when the pluggable module is coupled to the interface, apply biasing forces to press the heat input section to the pluggable module and to press the heat output section to the heat sink. With the heat dissipation component according to example embodiments, the heat dissipation effect of the pluggable module can be significantly improved.

Abstract: Systems and methods for causing control information to be sent from a source base station to a target base station via a user plane is provided. In a network that uses control plane and user plane separation, the systems and methods provided herein reduce time delays between handovers in the control plane and handovers in the user plane. The time delays are reduced by minimizing a duration of the handover preparation phase by sending control information with payload packets between network functions via in-band signaling in the user plane.

Abstract: There is a method comprising determining a beamforming configuration for a time period for reception of uplink data from a user device, determining uplink power control information based on the determined beamforming configuration and providing an indication of the determined uplink power control information to the user device for use in determining uplink transmit power for the time period.

Abstract: An apparatus comprising at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to: receive a message from at least one user equipment requesting to join a multicasting/broadcasting group; receive data for multicasting/broadcasting from a data network; generate multicasting/broadcasting session information for the data; route the data based on the multicasting/broadcasting session to at least one access point, wherein the access point wirelessly communicates the data to user equipment based on the multicasting/broadcasting session information.

Abstract: Various embodiments of the disclosed PON system enable approximate leveling of the optical-modulation amplitudes in a sequence of optical bursts received by a system's OLT from a plurality of ONUs. Some embodiments additionally enable approximate leveling of the average optical power, received at the OLT from different ONUs, in such a sequence. Some embodiments may rely on control messaging between the OLT and ONUs to perform one or both types of leveling. The disclosed leveling may advantageously provide an effective tool for optimizing upstream transmission for high-speed TDM-PONs.

Abstract: Methods and apparatus for sensor selection for localization and tracking are provided. A method (300) performed at an access point (101, 101a, 101b, 101c, 901, 902, 903) comprises: determining, a detectability of the access point (101, 101a, 101b, 101c, 901, 902, 903) for localization for a target device (102), based on channel state information of a radio link between the target device (102) and the access point (101, 101a, 101b, 101c, 901, 902, 903) (302); and determining whether the access point (101, 101a, 101b, 101c, 901, 902, 903) is to be used for position estimation of the target device (102) or not based on the detectability (304). A localization server (103) may further eliminate access points (101, 101a, 101b, 101c, 901, 902, 903) at poor positions from position estimation, by using a predefined weighted-kernel approach.

Abstract: Embodiments of the present disclosure relate to a beamforming solution for FDD MIMO communication. A first device receives a reference signal from a second device in a first channel, and determines a covariance matrix associated with the first channel. The first device determines a set of beamforming vectors from the covariance matrix based on the number of dominant angles of arrival associated with the reference signal and the number of beams associated with the set of beamforming vectors, and performs a transmission to the second device based on the set of beamforming vectors in a second channel. In this way, beamforming vectors can be calculated from the transformed channel covariance matrix with the angular spread and imperfect reciprocity considered.