Abstract: The invention relates to a method, apparatus and system for configuring control channels in a mobile communication network and a mobile station. In order to suggest another improved scheme for configuring control channels, in particular control channels related to the transmission of user data the invention suggests aligning the size of the control channel information of different formats to an equal number of coded control channel information bits and/or modulation symbols for each control channel. The control channels may comprise scheduling related control information. According to another aspect of the invention, the size of the control channel information is aligned by means of modulation and/or coding, however the control channel information is aligned to one out of a set of numbers of coded control channel information bits and/or modulation symbols for each control channel.

Abstract: The embodiments described herein are directed at techniques to sharing a transmission medium in a Bluetooth transceiver/WLAN transceiver combination device. A first device may receive a request from a second device to use the wireless transmission medium. The second device may also transmit timing data to the first device. The first device may determine a period of time to allow the second device to use the wireless transmission medium based on the timing data.

Abstract: Wireless communications systems and methods related to medium access in a shared radio frequency band with long-term sensing for exception to medium access restriction are provided. A wireless communication device performs channel measurements in a shared radio frequency band during a plurality of measurement occasions spaced apart in time, the performing the channel measurements being based on a plurality of spatial directions. The wireless communication device determines whether the channel measurements satisfy a criterion for accessing the shared radio frequency band without a medium access restriction. The wireless communication device transmits, in a first spatial direction, a first communication signal in the shared radio frequency band without the medium access restriction in response to determining that the channel measurements satisfy the criterion, the plurality of spatial directions including the first spatial direction.

Abstract: A radio terminal, which has a function to collect and report measurement information designated by a radio network, comprises: means for receiving collection/reporting control information related to the radio terminal's execution of at least one of the collection of measurement information and the reporting of the measurement information to the radio network; and control means for executing, based on the collection/reporting control information, at least one of the collection and the reporting if execution determination information, which is related to at least one of the collection of the measurement information and the reporting of the measurement information to be executed by the local terminal, satisfies a given determination criterion.

Abstract: A system and method for a telematic application on a mobile electronic device that can include detecting, in the telematic application, vehicular travel; collecting, in the telematic application, driver status identification data; determining a driver status based on the driver status identification data; recording the driver status; and recording telematic data based on the driver status.

Abstract: A computerized method for releasing a set of policies implemented on a network device is disclosed including detecting a speed of the network device is zero mph, initiating a policy release counter and determining a position of the network device has changed prior to the policy release counter satisfying a counting requirement. The computerized method further includes detecting the speed of the network device is greater than zero mph and less than a threshold speed, requesting first and second RSSI values from the transceiver, where the first and second RSSI values correspond to first and second communications transmitted by the network device to the transceiver separated by a delay, comparing the first RSSI value and the second RSSI value, and when the second RSSI value is greater than the first RSSI value, releasing the set of policies implemented on the network device.

Abstract: Certain aspects of the present disclosure provide a user equipment (UE) that may receive an indication of a proximity discovery resource in a physical sidelink feedback channel (PSFCH) symbol from a network entity. The UE may transmit a proximity discovery request including the indication of the proximity discovery resource. The UE may receive a PSFCH sequence associated with the proximity discovery resource from other UEs that may respond to the proximity discovery request. The UE may transmit a bit map sequence indicative of the other UEs to the network entity. The network entity may determine a proximity between the UE and the other UEs based on the bit map sequence. The network entity may schedule the UE and the other UEs based on the proximity.

Abstract: A processing device of a memory sub-system is configured to determine a current refresh frequency associated with the memory device, the current refresh frequency specifying a rate of performing refresh operations on data stored at the memory device; compute an updated refresh frequency by updating the current refresh frequency based on a criterion reflecting a result of comparing one or more operating parameters of the memory device to their respective threshold values; and perform a refresh operation on data stored at the memory device according to the updated refresh frequency.

Abstract: In an example implementation according to aspects of the present disclosure, a method may include randomly generating a value, illustrating a code containing the value, and scanning for a device advertising a service that is to use the value. Upon discovering the device advertising the service that is to use the value, the method may include associating with the device by connecting to the service and exchanging information with the device.

Abstract: Systems, methods, and apparatuses for wireless communication are described. Input data for in-phase branch/quadrature branch (I/Q) imbalance or mismatch may be compensated for or non-linear power amplifier noise may be used to generate compensated input data. In some examples, a transmitter may be configured to transmit communications signaling via a first antenna, the transmitter including a filter configured for digital mismatch correction; a receiver may be configured to receive communications signaling via a second antenna; and a switch may be configured to selectively activate a first switch path to couple the transmitter and the first antenna and a second switch path to couple the receiver and the transmitter to provide communications signaling received via the transmitter as feedback for the filter through the receiver.

Abstract: A communication method and a communications apparatus are disclosed to provide an implementation solution for measuring, in an idle state, a carrier. The method includes: initiating, in an idle state, measurement on one or more carriers when a volume of to-be-sent data exceeds a first threshold, or initiating measurement on one or more carriers when a paging message is received; and sending an obtained measurement result to a network device.

Abstract: In some implementations, a UAV flight system can dynamically adjust UAV flight operations based on radio frequency (RF) signal data. For example, the flight system can determine an initial flight plan for inspecting a RF transmitter and configure a UAV to perform an aerial inspection of the RF transmitter. Once airborne, the UAV can collect RF signal data and the flight system can automatically adjust the flight plan to avoid RF signal interference and/or damage to the UAV based on the collected RF signal data. In some implementations, the UAV can collect RF signal data and generate a three-dimensional received signal strength map that describes the received signal strength at various locations within a volumetric area around the RF transmitter. In some implementations, the UAV can collect RF signal data and determine whether a RF signal transmitter is properly aligned.

Abstract: During operation, the radio node may, using a first interface circuit, listen for transmissions from one or more second radio nodes. Based at least in part on the transmissions, the radio node may determine a first list of discovered channels associated with the radio node and the one or more second radio nodes. Then, the radio node may, using a second interface circuit, provide the first list of discovered channels to the one or more second radio nodes. Moreover, the radio node may, using the second interface circuit, receive one or more second lists of discovered channels from the one or more second radio nodes. Next, the radio node may aggregate the first list of discovered channels and the second list of discovered channels into a list of active channels. Furthermore, the radio node may, using the first interface circuit, provide the list of active channels to an electronic device.

Abstract: Circuits, devices and methods related to antenna tuner. In some embodiments, an antenna can be tuned by amplifying a signal for transmission by operating a transistor with a base current, and monitoring the base current. The method can further include adjusting an antenna tuner to thereby adjust an antenna load impedance presented to the amplified signal, with the adjustment being based on a variation of the monitored base current.

Abstract: A base station is disclosed, comprising: a processor; a memory coupled to the processor; a base station access radio coupled to the processor; a user equipment module, coupled to the processor, for providing a backhaul link for the base station; and a sniffing circuit coupled to the processor. The sniffing circuit further comprises: a radio receiver coupled to an amplifier and a filter, the amplifier and the filter both capable of being used across a plurality of frequencies; and a baseband processor coupled to the radio receiver, configured to convert a received signal from the radio receiver to a baseband frequency, to determine whether the received signal is one of a 2G, 3G, 4G, Wi-Fi, or 5G signal, to measure a signal strength of the received signal, and to identify a synchronization signal within the received signal.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may receive an indication of a plurality of sets of reference signal identifiers, wherein each set of reference signal identifiers of the plurality of sets of reference signal identifiers identifies reference signals of candidate neighbor nodes associated with the set, and wherein each candidate neighbor node associated with the set is in a same operating mode, and transmit a measurement report based at least in part on measuring one or more reference signals identified in the plurality of sets of reference signal identifiers. Numerous other aspects are provided.

Abstract: An intelligent data and knowledge-driven method for modulation recognition includes the following steps: collecting spectrum data; constructing corresponding attribute vector labels for different modulation schemes; constructing and pre-training an attribute learning model based on the attribute vector labels for different modulation schemes; constructing and pre-training a visual model for modulation recognition; constructing a feature space transformation model, and constructing an intelligent data and knowledge-driven model for modulation recognition based on the attribute learning model and the visual model; transferring parameters of the pre-trained visual model and the pre-trained attribute learning model and retraining the transformation model; and determining whether training on a network is completed and outputting a classification result.

Abstract: Techniques described herein improve viewer experience by leveraging the ability of a viewer's device to access an over-the-top (OTT) content via the device's multi-channel connections to an OTT content server. In an example embodiment, the device receives the OTT content via a first channel and performs cross-party diagnostic testing through a second channel. In this embodiment, a diagnostic app in the device compares measured signals in the first channel with a first set of threshold values and further compares acquired telemetry data in the second channel with a second set of threshold values. Based on the comparison results, the device determines the possible root cause of the interruption. Further, the device performs an in-depth diagnostic testing on a determined possible root cause (e.g., OTT content server) and sends an in-depth diagnostic report to a viewer.

Abstract: In various embodiment, the disclosed systems, methods, and apparatuses describe extending the usage spectrum for cable networks (e.g., hybrid fiber-coaxial networks). In particular, embodiments of the disclosure described determining a first portion of a signal having a first frequency band, the first frequency band being greater than approximately 1.2 GHz; determining a second portion of the signal having a second frequency band, the second frequency band being less than or equal to approximately 1.2 GHz; applying an attenuation to the first portion of the signal; and transmitting the second portion of the signal at a flat power-spectral density. Various other related systems, methods, and apparatuses are described.

Abstract: In some embodiments, a method for mitigating interference in a channel having multiple users includes: transmitting, by a transmitter, a signal of interest (SOI) to a sequential interference cancellation (SIC) receiver at a transmit power; determining a packet drop rate as seen by the receiver; and decreasing the transmit power in response to determining the packet drop rate exceeds a predetermined maximum packet drop rate. The transmitter's coding rate and/or modulation level may also be lowered based on the decrease in transmit power.

Abstract: Wireless communications may use one or more devices for transmission and/or reception that may lead to potentially harmful exposure. One or more safety measures may be used for wireless communication devices, such as maximum power exposure (MPE) reporting and/or related operations. A time window may be used to detect a quantity of exposure instances. A message may be sent indicating exposure, for example, based on a quantity of exposure events during the time window satisfying a threshold.

Abstract: A method and a user equipment are provided for wireless link monitoring. In the method, the user equipment acquires a plurality of measurement resources for wireless link monitoring. The user equipment performs wireless link measurement on each measurement resource to acquire a plurality of measurement results. The user equipment reports an indication of synchronization or an indication of asynchronization to a base station according to report association information comprising the plurality of measurement results and at least one preset threshold.

Abstract: Presented herein are methodologies for managing a citizens broadband radio service (CBRS) network. The methodology includes receiving, at an enterprise controller, measurement information from a first user equipment (UE) and a second UE, wherein the first UE and the second UE operate in a citizens broadband radio service (CBRS) network; selecting, at the enterprise controller, an information aggregation level based on a predetermined level of privacy associated with the first UE and the second UE; aggregating, at the enterprise controller, the measurement information from the first UE and the second UE in accordance with the information aggregation level to obtain aggregated measurement information; and sending, by the enterprise controller, the aggregated measurement information to a Spectrum Access System that controls allocation of resources in the CBRS network for the first UE and the second UE.

Abstract: A method for authenticating an electronic client device for purposes of granting/denying access to a secure network is provided. The network device detects whether a client device requesting access to the secure network is a known client device on a list maintained by the network device or an unrecognized client device that is not on the list. If the client device is detected as being an unrecognized client device, the network device causes a message to be sent to a manager of the secure network. When a response is received, identification information of the unrecognized client device is automatically added to the list of known client devices by the network device. A network device is also provided.

Abstract: A method and system for dynamically controlling random-access-request transmission in a cell provided by an access node, the access node supporting access attempts by user equipment devices (UEs). An example method includes (i) determining an extent to which the cell has experienced access blocks due to connection-request communication failure after successful random-access transmission and (ii) using the determined extent as a basis to dynamically set a physical random access channel (PRACH) format of the cell, wherein the PRACH format defines one or more configuration settings for random-access-request transmission by UEs in the cell and correlates with an effective radius of the cell.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may monitor a wake-up signal (WUS) occasion based at least in part on a discontinuous reception cycle activation duration timer; and receive a reference signal (RS) during the WUS occasion, wherein the RS is to facilitate a UE-assisted calibration of at least one antenna element on at least one panel associated with a base station or a base station-assisted calibration of at least one antenna element on at least one panel associated with the UE. Numerous other aspects are provided.

Abstract: In an approach to generating a digital sentiment signature to characterize an end to a communication, one or more computer processors detect a start of a communication between at least two participants. A computer starts a digital timer of the communication. A computer identifies one or more digital marks of the communication, where the one or more digital marks are a reflection of a sentiment of at least one of the at least two participants in the communication. A computer generates a digital sentiment signature based on the digital timer and on the one or more digital marks, where the digital sentiment signature is a digital signal that can be communicated across a plurality of types of communication channels. A computer detects an end of the communication. A computer determines a reason for the end of the communication. A computer stores the reason.

Abstract: Examples of techniques for handling fine time measurement ranging requests are described. In an example, an access point (AP) may receive a ranging request for initiating a Fine Timing Measurement (FTM) session. The AP may modify a channel width of a Wireless Local Area Network (WLAN) channel on which the AP is operating from a first channel width to a second channel width for performing the FTM session, where the second channel width is greater than the first channel width. In response to completion of an FTM burst associated with the FTM session, the AP may restore the channel width of the WLAN channel to the first channel width for performing non-FTM operations of the AP.

Abstract: A control device in a communication system including base station devices and terminal devices includes a processor configured to: calculate a needed radio resource amount of each slice classified based on requested quality; estimate an amount of interference between the base station devices, an amount of interference between the base station devices and the terminal devices, and an amount of interference between the terminal devices; allocate, in radio resources of a first base station device, a first resource for a first slice, a second resource for a second slice, and a restricted resource to which restrictions are imposed on use, based on a result of the estimation; and allocate a resource other than the second resource and the restricted resource as the first resource, and allocates a resource that is allocated in a second base station device and has influence on interference with the second slice.

Abstract: Provided is a traveling direction determination device that determines, using an acceleration sensor that generates acceleration signals indicating acceleration in three axial directions together with a direction of the acceleration, a traveling direction of a moving object mounted with the acceleration sensor, the traveling direction determination device comprising a determination unit that executes a first determination process in which the determination unit selects, using the acceleration signals, any of the three axes as a gravity axis, the gravity axis being closest to an actual gravity direction of the moving object to determine a gravity direction of the moving object and a second determination process in which the determination unit selects either of the two axes excluding the axis selected as the gravity axis, as a travel axis, the travel axis being closest to an actual traveling direction of the moving object based on moving average values of the acceleration signals to determine the traveling dire

Abstract: A communication method of the present disclosure comprises transmitting a sounding frame comprising a training signal; and receiving a first feedback frame from a communication partner device, the first feedback frame comprising first beamforming feedback information, wherein the first feedback frame is transmitted together with at least one second feedback frame by multiuser transmission.

Abstract: Methods, devices, and system related to wireless communications are disclosed. In one example aspect, a device for wireless communication includes a processor that is configured to determine an estimation of an interference signal for a connection between the device and a receiving device in a wireless communication system, construct an interference elimination signal based on the estimation of the interference signal, and perform a data transmission to the receiving device with the interference elimination signal to enable the receiving device to eliminate the interference signal in the data transmission. The estimation of the interference signal is determined by building a probabilistic model of the interference signal using at least an interference template associate with a characteristic of the device or one or more measurements of a channel condition collected within a predefined observation window.

Abstract: Disclosed are techniques for handling of radio frequency front-end group delays (GDs) for round trip time (RTT) estimation. In an aspect, a network entity determines information indicating a network total GD and a user equipment (UE) determines information indicating a UE total GD. The network entity transmits one or more RTT measurement (RTTM) signals to the UE, each including a RTTM waveform. The UE determines one or more one or more RTT response (RTTR) payloads for one or more RTTR signals, each including a RTTR waveform. The UE transmits the RTTR signal(s) to the network entity. For each RTTR signal, a transmission time of the RTTR waveform and/or the RTTR payload is/are determined based on the UE total GD. The network entity determines a RTT between the UE and the network entity based on the RTTM signal(s), the RTTR signal(s), and the information indicating the network total GD.

Abstract: An antenna module for a terminal includes an antenna and a Radiated Spurious Emission (RSE) improvement component. The antenna includes a feed source, a ground point, and at least one radiation arm. The RSE improvement component is coupled to the antenna for suppressing high order harmonics generated by the antenna when the antenna operates in a target frequency band, and includes a filter circuit configured to suppress the high order harmonics, and a control switch configured to control a working state of the filter circuit. The filter circuit can be a band stop filter circuit. The band stop filter circuit can be connected in series into the at least one target radiation arm of the antenna; or, a terminal of the band stop filter circuit is connected to the at least one target radiation arm of the antenna, and another terminal is connected to the feed source.

Abstract: A base station is provided which notifies a mobile station of transmission power information for an uplink RACH, the mobile station transmits transmission delay estimation information on the RACH to the base station over the RACH at a transmission power based on the transmission power information, and the base station changes the transmission power information according to the transmission delay estimation information and notifies the mobile station of the changed transmission power information. The mobile station retransmits data or a preamble if the mobile station does not receive a notification that the base station has received the data or the preamble correctly after a predetermined time. The base station transmits the transmission power information over a BCH and a CPICH transmitted to a plurality of mobile stations.

Abstract: A method of analyzing defects in a semiconductor device includes: collecting current data by applying a test voltage to the semiconductor device; extracting data within a decrease range from the current data; dividing the current data into a first component value and a second component value using the current data and the data extracted from within the decrease range; calculating a first quality index from the first component value satisfying a first function; and calculating a second quality index from the second component value satisfying a second function that is different from the first function.

Abstract: An IAB node switching method is applied to a relay system, and the relay system includes a donor base station and a first IAB node. The donor base station provides a gateway function for the first IAB node. The first IAB node receives a first BWP configuration from the donor base station, where the first BWP configuration includes a BWP configuration of a second IAB node, and the second IAB node is a candidate upper-level node of the first IAB node. The first IAB node switches to the second IAB node. According to the IAB node switching method, the IAB node, and the donor base station that are provided in this application, service availability of an IAB node is ensured when the IAB node has a plurality of upper-level nodes.

Abstract: Methods and systems are disclosed for reducing control signaling in uplink transmissions. A device, such as a wireless transmit/receive unit, may determine to use a demodulation reference signal (DM-RS) transmission schedule out of a plurality of DM-RS transmission schedules. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a single orthogonal frequency-division multiplexing (OFDM) symbol per subframe of a data stream. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a first subset of subcarriers of an OFDM symbol of a subframe of a data stream and Physical Uplink Shared Channel (PUSCH) transmission or Physical Uplink Control Channel (PUCCH) control information being mapped to a second set of subcarriers of the OFDM symbol. The first set of subcarriers may be different than the second set of subcarriers. The data stream may be transmitted according to the DM-RS transmission schedule.

Abstract: A communication system includes a first communication device and a second communication device. The first communication device includes a first processor that executes a first process including: performing a logging process for recording an operation of the first communication device; monitoring whether an abnormal occurrence is present and suspending the logging process when the abnormal occurrence is detected; and generating a trigger signal that instructs to suspend the logging process when the abnormal occurrence is detected, and a transmitter that transmits the trigger signal. The second communication device includes a receiver that receives the trigger signal transmitted from the first communication device, and a second processor that executes a second process including: performing a logging process for recording an operation of the second communication device; and suspending the logging process when the trigger signal is received by the receiver.

Abstract: Systems, methods, and apparatus are provided for automated identification of baseline data and changes in state in a wireless communications spectrum, by identifying sources of signal emission in the spectrum by automatically detecting signals, analyzing signals, comparing signal data to historical and reference data, creating corresponding signal profiles, and determining information about the baseline data and changes in state based upon the measured and analyzed data in near real time, which is stored on each apparatus or device and/or on a remote server computer that aggregates data from each apparatus or device.

Abstract: Apparatus and methods for identifying a wireless signal-emitting device are disclosed. The apparatus is configured to sense and measure wireless communication signals from signal-emitting devices in a spectrum. The apparatus is operable to automatically detect a signal of interest from the wireless signal-emitting device and create a signal profile of the signal of interest; compare the signal profile with stored device signal profiles for identification of the wireless signal-emitting device; and calculate signal degradation data for the signal of interest based on information associated with the signal of interest in a static database including noise figure parameters of a wireless signal-emitting device outputting the signal of interest. The signal profile of the signal of interest, profile comparison result, and signal degradation data are stored in the apparatus.

Abstract: The present disclosure relates to an over-the-air test apparatus for testing a device under test over-the-air. The test apparatus includes an antenna that is connected with a radio frequency circuit having at least three ports. A first port of the radio frequency circuit is connected with a first path that includes a connector configured to connect a signal analyzer and/or a signal generator with the over-the-air test circuit. A second port of the radio frequency circuit is connected with a second path that encompasses a detector. The second path includes an interface configured to be connected with a power meter, a signal analyzer or a feedback interface of a signal generator. Further, a test system is described.

Abstract: The present application describes a machine learning method for detecting tamper. The method includes a step of training a model using one or more values obtained from one or more different sensors on an integrated module. The one or more values act as training data with respect to one or more of light, acceleration, magnetic field, rotation, temperature, pressure, humidity, and audio. The method also includes a step of predicting, via the trained model, tampering of the of the integrated module. The present application also describes a system for detecting tamper.

Abstract: A repetition unit (212) performs a repetition for mapping a data signal and a demodulation reference signal (DMRS) repeatedly at a symbol level over a plurality of subframes. A signal allocation unit (213) maps, in the a plurality of subframes, the repeated DMRS to symbols other than symbols corresponding to an SRS resource candidate, which is a candidate for a resource to which a sounding reference signal (SRS) to be used to measure an uplink received signal quality is to be mapped. A transmission unit (216) transmits an uplink signal (PUSCH) including the DMRS and the data signal over the a plurality of subframes.

Abstract: Apparatus and methods for extending and enhancing wireless networks. An exemplary wireless network configured according to the disclosure uses in-service Wireless Network Clients (WNCs), such as mobile phones, laptops, etc., to extend and enhance the wireless network coverage via peer-to-peer sub-networks. In one implementation, each WNC is configured to operate as a Service Access Node (SAN) to other wireless client devices in the same network. The SAN provides peer-to-peer communications capabilities (to communicate with wireless clients) and gateway functionality (to aggregate data traffic over its own uplink communications), thereby enabling wireless clients to “piggyback” their data link onto the WNC. Peer Control Manager (PCM) software on each WNC enables, disables, and controls the service functions for that WNC in accordance with an overarching Peer Controller (PC) entity operated by an Access Point Controller/Core Network.

Abstract: Systems, methods, and devices enable spectrum management by identifying, classifying, and cataloging signals of interest based on radio frequency measurements. In an embodiment, signals and the parameters of the signals may be identified and indications of available frequencies may be presented to a user. In another embodiment, the protocols of signals may also be identified. In a further embodiment, the modulation of signals, data types carried by the signals, and estimated signal origins may be identified.

Abstract: The present application concerns an iterative bit-flipping decoding method using symbol or bit reliabilities, which is a variation of GRAND decoding and is denoted by ordered reliability bits GRAND (ORBGRAND). It comprises receiving a plurality of demodulated symbols from a noisy transmission channel; and receiving for the plurality of demodulated symbols, information indicating a ranked order of reliability of at least the most unreliable information contained within the plurality of demodulated symbols. A sequence of putative noise patterns from a most likely pattern of noise affecting the plurality of symbols through one or more successively less likely noise patterns is provided.

Abstract: In one embodiment, a method includes identifying, by a network access point, a plurality of channels within a spectrum block and determining, by the network access point, to allocate at least one channel of the plurality of channels to a device based on requirements of the device. The method further includes allocating, by the network access point, the at least one channel to the device. The at least one channel is exclusively for use between the network access point and the device.

Abstract: Control information (126) related to the reception of data (128) within a subframe (116) is transmitted over multiple subframes (113, 116) over multiple carrier (107, 108) from communication system infrastructure (102). A controller (134) in a mobile wireless communication device (104) reconstructs the control information (126) received over multiple subframes (113, 116) based on at least some control information (130) in a first physical control channel (118) in a first subframe (113) transmitted over a first carrier (107) and at least some other control information (132) in a second physical control channel (120) in a second subframe (116) transmitted over a second carrier (108).

Abstract: A method and apparatus report channel state information (CSI) feedback of a user equipment (UE) in a coordinated multipoint communication system. The method includes identifying, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The method also includes using the identified interference measurement resource to derive an interference measurement. The apparatus includes a controller configured to, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, identify an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The controller is configured to use the identified interference measurement resource to derive an interference measurement.