Abstract: A method in a radio communications network, the network comprising a base station and at least one user equipment, UE, wherein the base station comprises an antenna array comprising a plurality of antenna elements, the method being implemented in the base station and comprising the steps of precoding (1101) a multi-dimensional channel state information reference signal, CSI-RS, with a precoding virtualization matrix such that each antenna element of the antenna array is associated with a non-zero weight in at least two precoders of the precoding virtualization matrix, transmitting (1102) the multi-dimensional channel state information reference signal to a UE, receiving (1103) an identifier from the UE, wherein the identifier identifies a selected precoder from a codebook using (1104) the selected precoder to identify a desired precoder and transmitting (1105) a data signal to the UE using the desired precoder.

Abstract: A measurement method by a user equipment (UE) including receiving a first measurement list from a base station, the first measurement list including one or more measurement candidates, and measuring signal quality of at least some of the one or more measurement candidates independent of corresponding one or more measurement periods, the one or more measurement periods being periods determined for the at least some of the one or more measurement candidates may be provided.

Abstract: The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. A method for a terminal to measure interference in a wireless communication system supporting FDR according to an embodiment of the present invention comprises the steps of: receiving an interference measurement resource at a measurement subframe; and measuring, at the interference measurement resource, interference from a neighboring terminal on the basis of an interference reference signal transmitted from the neighboring terminal. In addition, data is not transmitted or is transmitted with zero-power in the interference measurement resource.

Abstract: Some embodiments herein relate to method in a user equipment for determining a transmit power to be used by the user equipment when transmitting in a radio communications network, which user equipment is served by a radio network node in the radio communications network. The user equipment receives, from the radio network node, an indication indicating a set of power control parameters out of multiple sets of power control parameters, which multiple sets of power control parameters are stored at the user equipment. The user equipment determines a transmit power based on the indicated set of power control parameters.

Abstract: The invention migrates data within a networked computing environment using dynamic feedback. Embodiments record, in a first database, dynamic implementation feedback data from an output of an adaptive decision engine, the dynamic implementation feedback data comprising data representing experience and impact of previously completed data migration projects; identify a first problem statement for data migration, the first problem statement comprising identification of data requiring migration; determine, based at least in part on the first problem statement, a first potential solution for data migration, the first potential solution comprising identification of a plurality of relevant systems and a plurality of process steps for using the plurality of systems to accomplish the data migration; determine a final solution based on the first potential solution; and determine, based on a calculated impact of the final solution, whether to implement the final solution.

Abstract: A first radio network node for measuring interference between the first radio network node and a second radio network node obtains configuration information that indicates which subframe is a flexible subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node. The first radio network node determines whether to configure the flexible subframe as an uplink subframe based on a necessity of the measuring of interference between the first radio network node and the second radio network node. The first radio network node configures the flexible subframe as an uplink subframe when the measuring of interference is needed, and receives the reference signal for measurement of the interference from the second radio network node in the uplink subframe.

Abstract: A method of cell search for a mobile device in a wireless communication system is provided. The method comprises performing a reception timing detection procedure, to obtain at least a possible reception time for a primary synchronization signal (PSS), performing a PSS hypothesis procedure, to generate three frequency-domain PSS sequences according to three root indexes each corresponding to a physical layer identity, and performing a secondary synchronization signal (SSS) coherent detection procedure, to calculate a SSS sequence according to each of the at least a possible reception time with the three frequency-domain PSS sequences, to obtain a physical layer cell identity group corresponding to the SSS sequence.

Abstract: A method is provided in one example embodiment and may include determining for each of one or more macro cell radios, a corresponding set of one or more small cell radios that are under a coverage area of each of the one or more macro cell radios, wherein each corresponding set is associated with a corresponding macro cell radio; calculating interference coordination parameters for each small cell radio belonging to each corresponding set, wherein the interference coordination parameters for each small cell radio belonging to each corresponding set comprises an uplink interference budget for each small cell radio; and communicating the interference coordination parameters to each small cell radio belonging to each corresponding set.

Abstract: The present invention discloses a method for determining a user equipment identifier in a wireless communication system supporting Device-to-Device (D2D) communication; and an apparatus for the method. More specifically, a method for determining an identifier of a UE in a wireless communication system supporting D2D communication comprises receiving, a first UE, a D2D signal including a D2D identifier from a second UE; and determining, the first UE, an identifier of the second UE on the basis of the received D2D identifier and measurement information of a cellular signal and/or information about resources in which the D2D signal is received.

Abstract: The present disclosure relates to methods, devices, and systems for cell identification. For example, the systems, devices, and methods described herein may be used to detecting a secondary synchronization signal (SSS) index. In an aspect of the present disclosure, a method includes detecting, at an electronic device, a first SSS index based on a comparison between a first power value and a first threshold. The first power value is associated with a correlation power result between a received signal from a base station and a local SSS. The method also include determining, at the electronic device, a second threshold based on the first power value, and performing a comparison between a second power value and the second threshold. The second power value is determined based on the received signal.

Abstract: An in-flight entertainment system includes a plurality of static transceivers and an ISM band communication interference manager. The static transceivers are configured to transmit and receive radio frequency signals in the ISM band. The static transceivers are further configured to measure signals received within the ISM band from mobile transceivers within the aircraft and to measure signals received from proximately located ones of the static transceivers, and to generate measurement reports containing the measurements and containing identifiers of the proximately located ones of the static transceivers and the mobile transceivers. The ISM band communication interference manager is communicatively connected to the static transceivers, and performs operations that include receiving the measurement reports from the static transceivers, and controlling transmission power levels used by the static transceivers and the mobile transceivers responsive to the content of the measurement reports.

Abstract: To reduce the signal processing performance degradation of a network node and/or to enhance the stability of the network node based on an appropriate estimate of equipment quantity in relation to communication traffic, a control device according to an embodiment of the present invention includes a first means for collecting, from a network node that processes traffic, traffic data that is information about the traffic and a second means for extracting, from the collected traffic data, a traffic feature value including the degree of the variation of the traffic. On the basis of the extracted traffic feature value, the second means calculates the amount of resources necessary for the network node to process the traffic.

Abstract: There is provided a distortion cancellation device including a memory, and a processor coupled to the memory and the processor configured to, acquire a transmission signal to be wirelessly transmitted, acquire a reception signal to which an intermodulation signal generated due to the transmission signal wirelessly transmitted is added, generate a replica signal of the intermodulation signal from the transmission signal, detect an arrival time of the intermodulation signal, based on a correlation operation using a sample of a signal sequence of the replica signal and a sample of the acquired reception signal, the signal sequence having a duration corresponding to a detection range, and cancel the intermodulation signal in the reception signal, based on the detected arrival time.

Abstract: A wireless apparatus configured to be cascaded to another wireless apparatus through a transmission path and to be coupled to an antenna multiplexer, the another wireless apparatus being coupled to the antenna multiplexer, the wireless apparatus includes a processor configured to specify a first time length for a first transmission signal having a first frequency band to pass through the wireless apparatus, specify a second time length for a second transmission signal having a second frequency band to pass through the wireless apparatus, the transmission path, and the another wireless apparatus, specify a difference between the first time length and the second time length, delay the second transmission signal by the specified difference, generate a cancellation signal for an intermodulation distortion that occurs in a received signal due to intermodulation between the first transmission signal and the second transmission signal, and combine the cancellation signal with the received signal.

Abstract: To process received wireless signals received in a receiver, a noise and interference estimate is generated by subtracting the serving cell component from the received OFDM signal, a normalized noise signal is produced by whitening the noise and interference estimate, interference information is detected from the normalized noise signal associated with corresponding reliability information indicating reliability of the interference information, interference cancellation is performed based on the interference information, and a performance indicator indicative of an accuracy of the interference cancellation is adaptively adjusted using the reliability information.

Abstract: It is provided a method for assisting downlink interference estimation in a cellular network. The method is performed in a network node of the cellular network and comprises the steps of: estimating an average transmit power of the network node in a future time period, resulting in a scaling factor indicating the average transmit power of the network node in relation to a reference transmit power of the network node; transmitting, in a resource element allocated to interference estimation, a reference signal for downlink interference estimation with a transmission power which is based on the scaling factor; and refraining from transmitting in a resource element in at least one instance where another network node transmits a reference signal for downlink interference estimation. A corresponding network node, computer program and computer program product for assisting downlink interference estimation are also presented.

Abstract: A system that incorporates aspects of the subject disclosure may perform operations including, for example, obtaining performance measurements, identifying a performance measurement from the performance measurements that is below performance threshold and, in turn, initiating corrective action to improve the performance measurement of an affected network element falling below the performance threshold. The performance measurements can be determined from measurements associated with signals generated by communication devices, noise levels in a spectral portion used by communication devices to transmit the signals, and interference signals exceeding an adaptive inter-cell interference threshold. Other embodiments are disclosed.

Abstract: There is provided an apparatus that acquires information indicating a result of detection of a communication node managed by a second frequency usage control system; and notifies the second frequency usage control system of first sharable information generated from first frequency usage information related to a first communication node managed by a first frequency usage control system. The first sharable information being held by a first database included in the first frequency usage control system.

Abstract: There is provided a terminal device including a mobile communication unit configured to perform mobile communication of a mobile communication network, an acquisition unit configured to acquire state information indicating a state of each of one or more wireless networks for wireless communication that is different from the mobile communication, a selection unit configured to select one wireless network among the one or more wireless networks based on the state information, and a providing unit configured to provide information regarding the one selected wireless network to another terminal device that performs the wireless communication.

Abstract: A voice call quality information generation method and an apparatus of a server for use in a wireless communication system are provided. The voice call quality information generation method includes receiving log information from at least one base station and generating voice call quality information using muting information generated based on the log information.

Abstract: A method, a system and a device for reporting uplink pilot interference are provided, which are applied to time division duplex (TDD) system, and include: a base station measures uplink pilot time slot (UpPTS) interferences within respective cell portions; the base station transmits the uplink pilot time slot interferences, which carries the home cell portion IDs corresponding to the uplink pilot time slot interferences, to a radio network controller, and the radio network controller selects the transmitting position of the uplink pilot time slot for all cell portions according to the uplink pilot time slot interferences and the home cell portion IDs. The system realizes the reporting of the dedicated measurement in TDD system.

Abstract: Apparatus and methods are described, including an interrogation device comprising an antenna, a transmitter-receiver (transceiver), and a processor. The processor, via the transceiver and the antenna, solicits a mobile communication terminal to associate with the interrogation device. While the solicited terminal is associated with the interrogation device, by communicating to the terminal respective identifiers of a plurality of base stations that collectively belong to a plurality of mobile communication networks, the processor drives the terminal to receive respective signals from at least some of the base stations, and communicate a property of at least some of the received signals to the processor. Other embodiments are also described.

Abstract: An active antenna test system comprising an active antenna unit comprising: a test signal generator arranged to generate at least a first test signal and at least one second test signal; a plurality of transmitter modules operably coupled to the test signal generator wherein the plurality of transmitter modules are arranged to simultaneously process the first test signal and at least one second test signal to produce at least one radio frequency test signal therefrom; and at least one receiver module arranged to process one or more signals falling in at least one spectral band determined to be susceptible to intermodulation distortion products caused by the at least one radio frequency test signal being generated from the first test signal and at least one second test signal; and an intermodulation determination module operably coupled to the at least one receiver module and arranged to determine a first received intermodulation performance.

Abstract: A system and methods for classification of events, the system including a memory, a network interface, and a processor configured to monitor system events via the network interface and store the system events as an event log in the memory, collect information about events from various web resources, extract, from the event log and the collected event information, labeling data including data about urgency of events and generate, based on the extracted labeling data, labeling data structures ascribing labels to respective events, extract, from the event log and the collected event information, event features data and generate, based on the extracted event features data, event features data structures ascribing features to respective events, and formulate decision rule structures for identification of urgent events based on the labeling data structures and the event features data structures.

Abstract: A method, apparatus, and system are provided for mitigating interference between two communication sessions based on a determined geographical proximity of two mobile devices (MDs) to each other. In one embodiment, a geographical proximity is determined of a first MD, engaged in a first communication session, to a second MD, engaged in a second communication session. Based on the determined geographical proximity, one of the two communication sessions is transferred to the other MD so that both communication sessions are resident at, and can be controlled by, a same MD. In other embodiments, wherein a first MD is engaged in two communication sessions, one of the two communication sessions may be transferred to a second MD that is sufficiently geographically distant from the first MD or the first MD may use a geographically distant remote wireless device as an uplink and downlink relay device for one of the communication sessions.

Abstract: A method and an apparatus for acquiring and using biometric information of a user in an electronic device are provided. According to an example embodiment of the present disclosure, the method may include executing a call function using a communication module included in the electronic device, outputting a voice signal depending on the execution of the call function through a sound output device included in the electronic device, and acquiring, by a sensor included in the electronic device, biometric information of the user of the electronic device while the call function is executed.

Abstract: An in-device coexistence interference report control method of a network for terminal to inform the network of interference among heterogeneous radio communication modules coexisting in the terminal is provided. The method includes determining, at a terminal when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report, transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station, receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal's IDC interference indicator transmission is permitted from the base station; and transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message.

Abstract: An aircraft server system includes a wireless transceiver configured to wirelessly emit and receive radio frequency signals in the passenger cabin of an aircraft, and a plurality of virtual network server units, each configured to remotely control one or more virtual network clients on one of a plurality of personal electronic devices, PEDs, wirelessly connected to the aircraft server system.

Abstract: Various communication systems may benefit from improved radio frequency transmissions. For example, communication systems may benefit from the selection of a frequency band based on measurements of a spectrum surrounding the user equipment. A method, in certain embodiments, may include taking measurements by a base station of a spectrum of an environment surrounding a user equipment. The method may also include determining based on the measurements and radio frequency capabilities of the base station at least one desired frequency for transmission by the user equipment. In addition, the method may include sending a request from the base station to a network entity requesting a grant of the at least one desired frequency for transmission by the user equipment.

Abstract: Disclosed is a mobile communication system and a mobile communication method which enable high-quality transmission and reception of hybrid automatic repeat request (HARQ) control information when a base station apparatus and a mobile station apparatus communicate using a broad frequency band formed by a plurality of component carriers. In a mobile communication system where a base station apparatus and a mobile station apparatus communicate using a plurality of downlink component carriers, the base station apparatus allocates a physical uplink shared channel (PUSCH) resource to the mobile station apparatus for the transmission of HARQ control information, and the mobile station apparatus uses the PUSCH resource to transmit HARQ control information to the base station apparatus.

Abstract: An in-device coexistence interference report control method of a network for terminal to inform the network of interference among heterogeneous radio communication modules coexisting in the terminal is provided. The method includes determining, at a terminal when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report, transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station, receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal's IDC interference indicator transmission is permitted from the base station; and transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message.

Abstract: A method for performing measurements in a device with at least two radio access technologies (RATs) is disclosed. The method may include establishing a first measurement schedule on a first RAT, and establishing a first transmission schedule for a second RAT. The method may further include changing at least one of the first measurement schedule or the first transmission schedule to prevent measurements of the first measurement schedule from occurring contemporaneously with transmissions of the first transmission schedule. Transmissions from the second RAT may interfere with measurements on the first RAT. The method may include transitioning from the first measurement mode to a second measurement mode based determining the second RAT is operating on potentially interfering frequency.

Abstract: A movement adjusting device adjusts the movement of a wireless transceiver moving according to a plan along a route through a wireless communication network (10, 12) while communicating for an application having a service requirement on the wireless communication network (10, 12), the wireless communication network (10, 12) comprises cells (14, 16, 18, 20) and the movement adjusting device is operative to: obtain radio network condition data (RSRP, RSRQ) regarding a group of cells (14, 16, 18, 20) comprising a current cell (14) in which the wireless transceiver (28) is located and a number of neighboring cells (16, 18, 20) into which the wireless transceiver (28) may move, analyze the radio network condition data (RSRQ, RSRP) with regard to fulfilling the service requirement of the application (26), and make an adjustment of the planned movement if the analysis indicates that this would improve on the fulfilling of the service requirement.

Abstract: The present application discloses a method for reporting, by a terminal, channel state information in a non-licensed band in a wireless communication system. More specifically, the method comprises: establishing, through a higher layer, a plurality of reserved resource sections of a serving cell for channel state information measurement in the non-licensed band; and measuring/reporting, in each of the plurality of reserved resource sections, the channel state information of the non-licensed band on the basis of the result of sensing the carrier waves of an adjacent cell and whether a reserved resource section of the adjacent cell is established, wherein the reserved resource section of the serving cell is determined based on a type of the reserved resource section of the serving cell measuring the channel state information.

Abstract: A user equipment (UE) to compensating for the frequency disturbance. The apparatus may include baseband circuitry and radio frequency (RF) circuitry. The baseband circuitry may detect a request for connectivity circuitry to perform an operation that generates a signal creating a frequency disturbance at the RF circuitry and send operation information indicating a type of the operation to radio frequency (RF) circuitry. The RF circuitry may include a processor and a phase lock loop (PLL) subsystem. The processor may receive the operation information; determine timing information correlating to the operation information; and send the timing information to a phase lock loop (PLL) subsystem indicating the type of the operation and a time of the operation. The PLL subsystem may generate an inverse signal to compensate for the frequency disturbance.

Abstract: An in-device coexistence interference report control method of a network for terminal to inform the network of interference among heterogeneous radio communication modules coexisting in the terminal is provided. The method includes determining, at a terminal when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report, transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station, receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal's IDC interference indicator transmission is permitted from the base station; and transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message.

Abstract: An in-device coexistence interference report control method of a network for terminal to inform the network of interference among heterogeneous radio communication modules coexisting in the terminal is provided. The method includes determining, at a terminal when a terminal capability enquiry message is received from a base station, whether the base station supports an In-Device Coexistence (IDC) interference report, transmitting, when the IDC interference report is supported, a terminal capacity information message to the base station, receiving a Radio Resource Control (RRC) connection reconfiguration message including information on whether terminal's IDC interference indicator transmission is permitted from the base station; and transmitting an RRC connection reconfiguration complete message to the base station in response to the RRC connection reconfiguration message.

Abstract: System(s) and method(s) for network resource optimization in a service area of a communication network are described. The method includes dividing a service area into a plurality of sub-areas, where each of the plurality of sub-areas is serviced by at least one network resource from a pre-determined number of network resources. The method further includes determining a locally optimal deployment solution comprising at least one local allocation attribute for the at least one network resource in each of the plurality of sub-areas, to meet a plurality of objectives for network resource optimization. The method further includes obtaining a globally optimal deployment solution comprising at least one global allocation attribute for allocation of the pre-determined number of network resources in the service area, based on the locally optimal deployment solution to meet the plurality of objectives.

Abstract: The invention relates to a method for monitoring a communication system, comprising: acquiring and storing data about timeout events or faulty transfers in connection with at least one signaling process in at least one first communication terminal (1, 2, 3) of the communication system; and creating a collection of such data and transferring (7, 8, 10) said collection to a collection point (4) for said data in the communication system.

Abstract: Network-side and device-side methods and apparatuses improve transmit link adaptation for devices operating in a cellular network that have interference-canceling receivers. Own-cell link adaptation towards a device in a current transmission interval exploits a determined mapping between the interfering-signal cancelation efficiency of the device versus the interfering-signal transport format, in combination with actual knowledge of the transport format that will be used to make an interfering neighbor-cell transmission in the current transmission interval. For example, a serving radio node uses the known transport format of the interfering transmission, to accurately determine the expected cancellation efficiency for the device with respect to the interfering transmission, and uses the expected cancellation efficiency to obtain a more accurate estimate of the own-cell channel quality expected for the device in the current transmission interval.

Abstract: One aspect of the present invention provides an RFID reader/writer and a diagnosis processing program for outputting correct diagnostic information on communication between the RFID reader/writer and an RF tag. The RFID reader/writer includes a communication unit configured to conduct communication with the RF tag and a communication diagnostic unit configured to diagnose the communication when the communication is successfully conducted. The communication diagnostic unit includes a characteristic acquisition unit configured to acquire a characteristic of the communication from a communication signal with the RF tag, a comparator configured to compare a value indicated by the acquired characteristic to a threshold used to determine a communication margin, and an output control unit configured to cause an output unit to output information on the communication margin from a comparison result.

Abstract: Techniques for detecting and demodulating a signal/transmission are described. Signal detection is performed in multiple stages using different types of signal processing, e.g., using time-domain correlation for a first stage, frequency-domain processing for a second stage, and time-domain processing for a third stage. For the first stage, products of symbols are generated for at least two different delays, correlation between the products for each delay and known values is performed, and correlation results for all delays are combined and used to declare the presence of a signal. For demodulation, the timing of input samples is adjusted to obtain timing-adjusted samples. A frequency offset is estimated and removed from the timing-adjusted samples to obtain frequency-corrected samples, which are processed with a channel estimate to obtain detected symbols. The phases of the detected symbols are corrected to obtain phase-corrected symbols, which are demodulated, deinterleaved, and decoded.

Abstract: A mobile communication method comprises allocating, by the radio base station, the respectively different paging cycles, to a plurality of radio terminals that are present in an area covered by the radio base station.

Abstract: The present invention relates to a method for requesting the selection of a master management apparatus through a server by a management apparatus enabling television white space (TVWS) apparatuses to coexist in a TVWS. The method includes the steps of: determining whether the trigger condition of the process for selecting the master management apparatus is satisfied; and requesting the selection of the master management apparatus by the server, wherein the master management apparatus is configured to determine a channel selection in the TVWS for terminals connected to the master management apparatus and a slave management apparatus, and the trigger condition can be based on the load balance parameters or geographical coverage parameters of the management apparatus.

Abstract: In one example embodiment, a device includes a memory configured to store computer-readable instructions therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first signal of a first technology in presence of interference from at least a second signal of a second technology, the first signal and the second signal being overlappingly transmitted, the determined first signal being used for processing of information associated with the first signal.

Abstract: Methods, computer-readable media and apparatuses to identify UE performance and to optimize network performance are disclosed. A processor receives a reported channel quality indicator value from a user equipment, wherein the reported channel quality indicator value is used for setting an initial modulation and an initial coding rate, determines a calibrated channel quality indicator value based on historical data for the user equipment and applies the calibrated channel quality indicator value that determines a calibrated modulation and a calibrated coding rate instead of the initial modulation and the initial coding rate based on the channel quality indicator value received from the user equipment, wherein the receiving, the determining and the applying are continuously performed while the user equipment is in a radio resource control connected mode.

Abstract: Conference Systems are commonly used in meeting rooms or plenary halls to support the discussion of a plurality of participants. Such Conference Systems may comprise more than 50 or 100 microphone equipped delegate units, whereby each delegate unit can be assigned to a participant of the discussion. A delegate unit 1 for a Conference System is proposed, the delegate unit comprises a base body 2, a microphone stem body 3 comprising a microphone head 10 and a stem 11, whereby the microphone head 10 is arranged on the stem 11 and whereby the microphone stem body 3 is arranged on the base body 2, whereby the microphone head 10 has a directional microphone characteristic.

Abstract: A method of beacon detection performed by a small cell device includes: exchanging beacon parameters with a user equipment (UE); entering a low power mode after exchanging the beacon parameters with the UE; receiving, from the UE, a beacon in a random access channel (RACH) preamble containing the beacon parameters while in the low power mode; entering a high power mode in response to receiving the beacon; and associating with the UE while in the high power mode. The method of beacon detection allows a small cell device to transition from a low power mode to a high power mode in an efficient manner. The transmission may be triggered by a user equipment that is entering a service area of the small cell device.

Abstract: The present invention relates to a method in a network control node for transmission of control channel signals in a wireless communication system, the wireless communication system employing scheduling of physical resource blocks (PRBs) used for each new transmission of a control channel signal, wherein each control channel signal is related to one or more control channel elements (CCEs); the method comprising the steps of: removing user specific reference signals in associated physical resource blocks (PRBs) if the associated physical resource blocks (PRBs) comprises at least one control channel signal; inserting control channel signals in the associated physical resource blocks (PRBs); and transmitting the associated physical resource blocks (PRBs). Furthermore, the invention also relates to a computer program, a computer program product, and a network control node device thereof.

Abstract: A method of calibrating a passive intermodulation (PIM) measurement device configured to transmit radio frequency (RF) signals and receive PIM signals using a directional antenna includes arranging the PIM measurement device connected to the directional antenna so that the directional antenna is configured to transmit an RF signal having a substantially unobstructed boresight axis, transmitting the RF signal, and obtaining a PIM measurement using the PIM measurement device. The PIM measurement device can then be calibrated based on the obtained PIM measurement.