Abstract: A user equipment including a first radio sub-system configured to use a first radio access technology; a second radio sub-system configured to use a second radio access technology different to the first radio access technology; a data interface configured for transfer of parameters between the first radio sub-system and the second radio sub-system; wherein the a first radio sub-system is configured to send in-device co-existence relevant parameters to second radio sub-system, wherein the in-device co-existence parameter at least indicates a radio resource, in a frequency domain and/or a time domain.

Abstract: A user equipment including means for determining that a level of interference of a received signal at the user equipment is above a threshold; determining a transmission state of at least one sub-system of the user equipment; and determining based, at least in part, on the determining that a level of interference of a received signal is above a threshold and the determined transmission state of at least one sub-system whether at least a portion of the interference is caused by a transmitter of the user equipment.

Abstract: A user equipment including a first radio sub-system configured to use a first radio access technology; a second radio sub-system configured to use a second radio access technology different to the first radio access technology; a data interface configured for transfer of parameters between the first radio sub-system and the second radio sub-system; wherein the a first radio sub-system is configured to send in-device co-existence relevant parameters to second radio sub-system, wherein the in-device co-existence parameter at least indicates a radio resource, in a frequency domain and/or a time domain.

Abstract: Antenna-plexers for interference cancellation are provided herein. In certain embodiments, a wireless device includes an antenna, an antenna-plexer coupled to the antenna and configured to generate a feedback signal, a transmitter configured to transmit a transmit signal to the antenna by way of the antenna-plexer, a receiver configured to process a receive signal, and a feedback receiver configured to process the feedback signal from the antenna-plexer to provide compensation to the receive signal.

Abstract: RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, a method of interference cancellation includes filtering a radio frequency (RF) transmit signal to generate a first RF feedback signal using a first filter of a front end system, filtering the RF transmit signal to generate a second RF feedback signal using a second filter of the front end system, processing the first RF feedback signal to generate a first digital interference cancellation signal using a first feedback receiver, processing the second RF feedback signal to generate a second digital interference cancellation signal using a second feedback receiver, and compensating an RF receive signal for interference based on the first digital interference cancellation signal and the second digital interference cancellation signal using a receiver.

Abstract: A method including: receiving, by an apparatus including one or more antenna panels for receiving beams, a frame structure including a plurality of time slots, wherein each time slot includes a plurality of orthogonal frequency-division modulated (OFDM) symbols and at least one guard period; performing beam sweeping over a plurality of received beams during said guard period; and aligning the apparatus to receive on a best beam of at least one antenna panel determined based on the beam sweeping.

Abstract: Antenna-plexers for interference cancellation are provided herein. In certain embodiments, a wireless device includes an antenna, an antenna-plexer coupled to the antenna and configured to generate a feedback signal, a transmitter configured to transmit a transmit signal to the antenna by way of the antenna-plexer, a receiver configured to process a receive signal, and a feedback receiver configured to process the feedback signal from the antenna-plexer to provide compensation to the receive signal.

Abstract: RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter that transmits a transmit signal through a first front end circuit, a receiver that processes a receive signal from a second front end circuit, and a feedback receiver that processes a feedback signal from the first front end circuit to generate a digital interference cancellation signal that compensates the receiver for interference arising from the transmitter.

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

Abstract: A network-controlled repeater including a first transmission pathway for amplifying a first signal received from at least a first antenna port and transmitted by at least a second antenna port; a second transmission pathway for amplifying a second signal received from at least the second antenna port and transmitted by at least the first antenna port; means for self-interference cancelling including a feedback pathway to modify the first signal associated with the first transmission pathway; and a controller. The controller includes means for causing the first signal to be propagated and amplified along the first transmission pathway; means for causing the second signal to be propagated and amplified along the second transmission pathway; and means for causing a self-interference cancelling signal to be propagated along the feedback pathway to modify the first signal associated with the first transmission pathway. The second transmission pathway is reused for the feedback pathway.

Abstract: An apparatus including at least one processor; and at least one memory including computer program code with the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to control: receiving scheduling information for uplink transmission; performing at least one scheduled uplink transmission according to the scheduling information; controlling content of a power headroom report in dependence upon detection of a reflection of the scheduled uplink transmission; and transmitting the power headroom report having content controlled in dependence upon detection of the reflection of the scheduled uplink transmission.

Abstract: Antenna-plexers for interference cancellation are provided herein. In certain embodiments, a wireless device includes an antenna, an antenna-plexer coupled to the antenna and configured to generate a feedback signal, a transmitter configured to transmit a transmit signal to the antenna by way of the antenna-plexer, a receiver configured to process a receive signal, and a feedback receiver configured to process the feedback signal from the antenna-plexer to provide compensation to the receive signal.

Abstract: An apparatus is provided that includes a first multi-port antenna that operates with a first radiation pattern when a first port is used and operates with a second radiation pattern, different to the first radiation pattern, when a second port, different to the first port, is used. The apparatus also includes a second multi-port antenna that operates with a third radiation pattern when a third port is used and operates with a fourth radiation pattern, different to the third radiation pattern, when a fourth port, different to the third port, is used. The apparatus further includes at least one switch for selecting one of multiple paths between a node and each port of a pair of ports.

Abstract: There is provided co-channel interference mitigation by power adjustments that take into account sensitivity improvement provided by the sky communications. In connection with a communications network configured for ground communications and sky communications one radio device performs transmission power control of another radio device. If at the controlling radio device, a radio link is determined to be sky communications, at least one power adjustment for controlling the transmission power of the other radio device is determined in accordance with one or more power control parameters for sky communications. The transmission power of the second radio device is controlled by the first radio device, on the basis of the determined at least one power adjustment. In this way co-channel interference mitigation is supported by power adjustments that take into account sensitivity improvement provided by the sky communications.

Abstract: There is provided apparatus for a transmitting device, the apparatus including: a first and a second up-converter circuit; a first and a second local oscillator; a first and a second antenna, wherein the first up-converter circuit includes the first local oscillator, and the second up-converter circuit includes the second local oscillator, wherein the first and the second local oscillators are configured to generate different frequency signals from each other. Each of the first and the second up-converter circuits are configured to: obtain a first signal for transmission; increase the frequency of the first signal using the first and the second local oscillators respectively; and provide the increased frequency first signal to the first and the second antennas respectively, for transmission.

Abstract: Radio frequency (RF) communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter including a power amplifier that amplifies an RF transmit signal, a receiver including a low noise amplifier (LNA) that amplifies an RF receive signal, and an interference cancellation circuit that selects a bandpass filter from a plurality of bandpass filters to filter the RF transmit signal after amplification by the power amplifier. The selected bandpass filter operates in combination with a controllable gain circuit and a controllable phase circuit to generate an analog interference cancellation signal that is injected into the receiver to compensate the RF receive signal for interference arising from the transmitter.

Abstract: Techniques are disclosed for providing isolation between a pair of partially overlapping antennas. An example electronic device includes a first antenna coupled to a first transceiver through a first signal path comprising a first feed, and a second antenna coupled to a second transceiver through a second signal path comprising a second feed. The first antenna and second antenna partially overlap. The example electronic device also includes compensation circuitry coupled to the first signal path and the second signal path and configured to generate a compensation signal that provides analog cancellation of an interference signal received at the second antenna from the first antenna.

Abstract: An apparatus is provided that includes means for obtaining a total delay error that when added to a reference time equivalent to a reference distance between first and second antennas equals a difference between a transmission time of a signal sent via the first antenna and a reception time of the signal received via the second antenna; means for measuring a frequency-variable first delay associated with reflection of a signal from a frequency-variable complex impedance of the first antenna; means for measuring a frequency-variable second delay associated with reflection of a signal from a frequency-variable complex impedance of the second antenna; means for estimating a first portion of the total delay error associated with the first antenna in dependence upon at least the first delay; and means for estimating a second portion of the total delay error associated with the second antenna in dependence upon at least the second delay.

Abstract: RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter that transmits a transmit signal through a first front end circuit, a receiver that processes a receive signal from a second front end circuit, and a feedback receiver that processes a feedback signal from the first front end circuit to generate a digital interference cancellation signal that compensates the receiver for interference arising from the transmitter.

Abstract: Antenna-plexers for interference cancellation are provided herein. In certain embodiments, a wireless device includes an antenna, an antenna-plexer coupled to the antenna and configured to generate a feedback signal, a transmitter configured to transmit a transmit signal to the antenna by way of the antenna-plexer, a receiver configured to process a receive signal, and a feedback receiver configured to process the feedback signal from the antenna-plexer to provide compensation to the receive signal.