Abstract: According to certain embodiments, methods and systems include providing interference characterization data by a network node to a first wireless device for use in performing interference mitigation. A network node may provide telecommunications services for a first wireless device located associated with the network node. Characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device may be identified. The at least one characteristic may identify at least one transmission mode associated with the interfering signal. The characteristic data associated with the interfering signal associated with the second wireless device may be transmitted to the first wireless device.

Abstract: Estimation of interference cancellation efficiency as disclosed herein advantageously accounts for the real-world or effective performance of interference cancellation by estimating the interference cancellation efficiency expected for a signal targeted for interference cancellation as a joint function of signal parameters for the targeted signal and one or more other signals that will remain after such cancellation. For example, a wireless communication apparatus, such as a user equipment configured for operation in a cellular communication network, is configured to estimate the interference cancellation efficiency expected for an interfering signal received in conjunction with a desired signal, based on a joint function of signal parameters for the interfering signal and the desired signal. Such processing extends directly, of course, to the consideration of multiple interferers and/or multiple desired signals, and may be carried out in each of two or more interference cancellation processing iterations.

Abstract: Systems and methods relating to assisting a wireless device with suppression of an interfering physical channel during reception of a desired physical channel are disclosed. In some embodiments, a method of operation of a wireless device to assist with suppression of an interfering physical channel during reception of a desired physical channel comprises receiving assistance information for an interfering physical channel and receiving a desired physical channel while suppressing the interfering physical channel according to the assistance information for the interfering physical channel. The assistance information comprises an identity used to generate a reference signal associated with the interfering physical channel and information indicative of one or more transmission constraints on transmission of the interfering physical channel, the one or more transmission constraints comprising a spatial multiplexing rank restriction and/or a precoding matrix restriction.

Abstract: Primary and secondary apparatuses avoid concurrent performance of activities, wherein the secondary apparatus has a best and possibly different worst case minimum amounts of time required to perform activity. The primary apparatus ascertains a first future moment when it will become inactive and ascertains whether its upcoming period of inactivity will not be less than the secondary apparatus' best case minimum amount of time required to perform activity. If not, the primary apparatus asserts, in advance of the first future moment, an inactivity indicator signal indicating its upcoming inactivity. The interval between assertion of the inactivity indicator signal and the first future moment is greater than or equal to a difference between the secondary apparatus' worst and best case minimum amounts of time required to perform activity.

Abstract: A technique for managing activity states of at least two subscriptions in a terminal device is described. A method implementation of this technique performed in the terminal device comprises the steps of monitoring whether a first subscription is to transit or has transit from a first active state to a second active state while at least one second subscription is in a detached state, wherein the second active state is associated with a lower terminal activity than the first active state, if the result of the monitoring step is affirmative, waiting for a predetermined period of time, upon elapse of the predetermined period of time, if the first subscription is still in the second active state, triggering a transition of the first subscription from the second active state to an inactive state and initiating for the at least one second subscription a transition from a detached state to an inactive state.

Abstract: According to certain embodiments, methods and systems include providing interference characterization data by a network node to a first wireless device for use in performing interference mitigation. A network node may provide telecommunications services for a first wireless device located associated with the network node. Characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device may be identified. The at least one characteristic may identify at least one transmission mode associated with the interfering signal. The characteristic data associated with the interfering signal associated with the second wireless device may be transmitted to the first wireless device.

Abstract: According to certain embodiments, methods and systems include providing interference characterization data by a network node to a first wireless device for use in performing interference mitigation. The network node may provide telecommunications services for a first wireless device associated with the network node. Characteristic data may be identifying by the network node. The characteristic data may be associated with at least one characteristic of an interfering signal associated with a second wireless device. The characteristic data may be transmitted to the first wireless device and may identify a precoder granularity configured for least one physical resource block pair associated with the interfering signal.

Abstract: A technique for managing measurements for at least two subscriptions in a mobile terminal is described. A method implementation of this technique performed in the mobile terminal comprises the steps of determining a common carrier set being an intersection between the first carrier set associated with a first subscription and the second carrier set associated with at least one second subscription, performing a first measurement on the first carrier set, and the second measurement on the second carrier set excluding the common carrier set, and mapping results associated with the first measurement of the first subscription relating to the common carrier set to the at least one second subscription.

Abstract: According to certain embodiments, a method for providing interference characterization data by a network node includes providing telecommunications services for a first wireless device located associated with the network node. The network node identifies characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device. The characteristic data associated with the interfering signal associated with the second wireless device is transmitted to the first wireless device. The at least one characteristic may identify at least one power characteristic associated with the interfering signal.

Abstract: According to certain embodiments, methods and systems include providing interference characterization data by a network node to a first wireless device for use in performing interference mitigation. A method for providing interference characterization data by a network node may include providing telecommunications services for a first wireless device associated with the network node. Characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device may be identified by the network node. The characteristic data associated with the interfering signal associated with the second wireless device may be transmitted to the first wireless device. The at least one characteristic may identify a resource allocation granularity configured from at least one physical resource block pair associated with the interfering signal.

Abstract: A transmitted OFDM signal is detected in a receiver of a wireless communication system. The receiver has at least two receiver branches, each comprising an antenna, a front end receiver, a Discrete Fourier Transform unit, and a channel estimator. The receiver further comprises a detector for detecting received data symbols. The method comprises the steps of determining a system bandwidth associated with the transmitted signal; comparing the determined system bandwidth with a predetermined value; determining, if the system bandwidth is lower than the predetermined value, channel estimates separately for each branch, and detecting received data symbols from the received signals and corresponding channel estimates; and calculating, if the system bandwidth is higher than the predetermined value, a weighted sum of signals from each branch, determining a combined channel estimate, and detecting received data symbols from the weighted sum and the combined channel estimate.

Abstract: A method of delay spread compensation, suitable for use in a communication device a having plurality of receiver antennas, is disclosed. The method comprises receiving a plurality of signals, each via a respective antenna, wherein each signal comprises a signal component corresponding to a transmitted signal, and wherein each received signal experiences a respective channel impulse response having a corresponding delay spread; determining estimates of each of the channel impulse responses; calculating post-coding characteristics based on the estimates of the channel impulse responses; and post-coding the plurality of received signals using the post-coding characteristics to produce at least a first delay spread compensated signal. Corresponding computer program product, processing arrangement and communication device are also disclosed.

Abstract: Primary and secondary apparatuses avoid concurrent performance of activities, wherein the secondary apparatus has a best and possibly different worst case minimum amounts of time required to perform activity. The primary apparatus ascertains a first future moment when it will become inactive and ascertains whether its upcoming period of inactivity will not be less than the secondary apparatus' best case minimum amount of time required to perform activity. If not, the primary apparatus asserts, in advance of the first future moment, an inactivity indicator signal indicating its upcoming inactivity. The interval between assertion of the inactivity indicator signal and the first future moment is greater than or equal to a difference between the secondary apparatus' worst and best case minimum amounts of time required to perform activity.

Abstract: A method of estimating and reporting, for a receiver (4) associated with a plurality of antennas (41, 42, 43, 44), a channel quality measure of a wireless communication channel from a transmitter (2) to the receiver, the method comprising the steps of: selecting at least one antenna configuration from a set of mutually different antenna configurations inherent to the receiver; determining a channel quality measure for the selected antenna configuration; and reporting the channel quality measure. The set of mutually different antenna configurations comprises antenna configurations that are allocated to different frequency bands (FB1, FB3). A receiver (4), user equipment, computer program and computer readable medium are also disclosed.

Abstract: A technique for managing activity states of at least two subscriptions in a terminal device is described. A method implementation of this technique performed in the terminal device comprises the steps of monitoring whether a first subscription is to transit or has transit from a first active state to a second active state while at least one second subscription is in a detached state, wherein the second active state is associated with a lower terminal activity than the first active state, if the result of the monitoring step is affirmative, waiting for a predetermined period of time, upon elapse of the predetermined period of time, if the first subscription is still in the second active state, triggering a transition of the first subscription from the second active state to an inactive state and initiating for the at least one second subscription a transition from a detached state to an inactive state.

Abstract: A method and system for a cellular telecommunication system is provided. A transmission signal, which includes reference symbols and synchronization symbols, is received from the network node of at least one cell. At least one pre-coding vector is determined for the transmission signal, where one pre-coding vector is associated with transmission by at least one transmit antenna of the network node of the at least one cell. For each of the at least one pre-coding vectors, a channel estimate is estimated for all sub-carriers of the received transmission signal from the received reference symbols and a reference symbol channel model defined for reference symbols of the transmission signal and from the synchronization symbols, the at least one pre-coding vector, and a synchronization symbol channel model defined for synchronization symbols of the transmission signal.

Abstract: A technique for managing measurements for at least two subscriptions in a mobile terminal is described. A method implementation of this technique performed in the mobile terminal comprises the steps of determining a common carrier set being an intersection between the first carrier set associated with a first subscription and the second carrier set associated with at least one second subscription, performing a first measurement on the first carrier set, and the second measurement on the second carrier set excluding the common carrier set, and mapping results associated with the first measurement of the first subscription relating to the common carrier set to the at least one second subscription.

Abstract: The current invention relates to a method of determining a quality of a received signal, wherein the method comprises receiving a signal comprising a first part and a second part and wherein at least the second part of the received signal comprises a scrambling sequence period; and determining a first noise-and-interference power of the first part of the received signal by removing a second noise-and-interference power of the second part of the signal, wherein the scrambling sequence period is utilized in the removal. The invention further relates to a corresponding device and system. Thereby, the invention is able to, among other things, reduce neighbor cell reference symbol interference in a dense network.

Abstract: A method and apparatus is provided for demodulating a desired data stream in a MU-MIMO communication system where only the precoder for the desired data stream is known a priori. The receiving terminal according to various embodiments of the present invention estimates the precoder for one or more interfering data streams. The receiving terminal can then use the known precoder for the desired data stream and the estimated precoders for the interfering data streams to perform MMSE demodulation.

Abstract: A transmitted OFDM signal is detected in a receiver of a wireless communication system. The receiver has at least two receiver branches, each comprising an antenna, a front end receiver, a Discrete Fourier Transform unit, and a channel estimator. The receiver further comprises a detector for detecting received data symbols. The method comprises the steps of determining a system bandwidth associated with the transmitted signal; comparing the determined system bandwidth with a predetermined value; determining, if the system bandwidth is lower than the predetermined value, channel estimates separately for each branch, and detecting received data symbols from the received signals and corresponding channel estimates; and calculating, if the system bandwidth is higher than the predetermined value, a weighted sum of signals from each branch, determining a combined channel estimate, and detecting received data symbols from the weighted sum and the combined channel estimate.