Systems and methods of WLAN communication including efficient spatial reuse mechanisms for relay transmissions between a repeater network and non-AP STAs in OFDMA. The non-AP STAs are grouped based on their connectivity with the individual repeaters and the radio coverage regions of the repeaters. Each group is either a non-overlapping group with the constituent non-AP STAs located in a non-overlapping coverage region of a particular repeater, or an overlapping group with the constituent non-AP STAs located in an overlapping coverage region of two or more repeaters. Based on the grouping, certain RUs (or subchannels) are reused for multiple groups without causing inter-group interference, thereby expanding the bandwidths used in the relay operations. RU allocation based on grouping can be used in combination with transmit power adjustment to achieve efficient spatial reuse in OFDMA.

Methods, systems, and devices for wireless communications are described. A wireless device such as a User Equipment (UE) in communication with a serving cell, may perform interference cancellation from an interfering cell. A UE may determine a rank of an unprecoded channel matrix associated with the interfering cell, estimate a traffic-to-pilot ratio (TPR) for an interfering transmission, based in part on a unit-norm property of a plurality of precoding matrix hypotheses for the interfering transmission, calculate respective log-likelihood functions for joint demodulation of the serving and interfering cell transmissions, select a subset of the plurality of precoding matrix hypotheses, and perform joint demodulation of the transmissions to obtain a set of demapped symbols, by assuming a uniform distribution hypothesis for the serving cell transmission, and a Gaussian distribution hypothesis for the interfering transmission.

The present disclosure relates to methods, a user equipment and a radio network node for interference mitigation in a dynamic TDD system comprising a user equipment (201, 700), a serving base station (202) serving the user equipment (201, 700), at least one neighboring base station (203) and at least one neighboring user equipment (204) served by the at least neighboring base station (203). The method comprises obtaining (S301) link direction information and at least one transmission parameter, wherein the link direction information and the at least one transmission parameter are associated with downlink transmission of the at least one neighboring base station (203) or uplink transmission of the at least one neighboring user equipment (204). The method further comprises mitigating (S302) interference caused by the downlink transmission or uplink transmission based upon the link direction information and the at least one transmission parameter. The methods, user equipment and radio network node of the present disclosure may overcome or alleviate the interference issues in the dynamic TDD system and give quality and efficiency of the wireless communication a big boost.

A method for transmission and reception for a terminal in a wireless communication system according to an embodiment of the present invention may comprises the steps of: receiving group information of a serving cell and neighboring cells and uplink/downlink configuration information for each group; and transmitting or receiving a signal to or from the serving cell, using the received group information of the serving cell and the neighboring cells and the uplink/downlink configuration information for each group, wherein the group information includes information on groups of cells clustered according to beams to be used by each cell or beam groups to which the beams belong.

Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.

Disclosed is a method for suppressing an inter-carrier interference and noise signal, and an orthogonal frequency division multiplexing receiver for performing the same. Here, a method for an orthogonal frequency division multiplex (OFDM) receiver to suppress an inter-carrier interference and noise signal by using a symbol interference free interval without inter-symbol interference (ISI) in a guard interval (GI) includes: performing a weighting operation between sample data of the symbol interference free interval and sample data of the effective symbol interval by using a signal-to-noise ratio (SNR) of the symbol interference free interval and an SNR of an effective symbol interval corresponding to the symbol interference free interval; and performing a fast Fourier transform (FFT) on FFT input data configured by including the weighting-operated sample data into the effective symbol interval.

Methods performed by a wireless device operating in a dormant mode comprise performing a measurement on each of a plurality of resources from a predetermined set of resources or demodulating and decoding information from each of a plurality of resources from a predetermined set of resources, such as a set of beams. The methods further include evaluating the measurement or the demodulated and decoded information for each of the plurality of resources against a predetermined criterion, and then discontinuing the performing and evaluating of measurements, or discontinuing the demodulating and decoding and evaluation of information, in response to determining that the predetermined criterion is met, such that one or more resources in the predetermined set of resources are neither measured nor demodulated and decoded. The methods further comprise deactivating receiver circuitry, further in response to determining that the predetermined criterion is met.

Disclosed is a method for suppressing an inter-carrier interference and noise signal, and an orthogonal frequency division multiplexing receiver for performing the same. Here, a method for an orthogonal frequency division multiplex (OFDM) receiver to suppress an inter-carrier interference and noise signal by using a symbol interference free interval without inter-symbol interference (ISI) in a guard interval (GI) includes: performing a weighting operation between sample data of the symbol interference free interval and sample data of the effective symbol interval by using a signal-to-noise ratio (SNR) of the symbol interference free interval and an SNR of an effective symbol interval corresponding to the symbol interference free interval; and performing a fast Fourier transform (FFT) on FFT input data configured by including the weighting-operated sample data into the effective symbol interval.

Methods performed by a wireless device operating in a dormant mode comprise performing a measurement on each of a plurality of resources from a predetermined set of resources or demodulating and decoding information from each of a plurality of resources from a predetermined set of resources, such as a set of beams. The methods further include evaluating the measurement or the demodulated and decoded information for each of the plurality of resources against a predetermined criterion, and then discontinuing the performing and evaluating of measurements, or discontinuing the demodulating and decoding and evaluation of information, in response to determining that the predetermined criterion is met, such that one or more resources in the predetermined set of resources are neither measured nor demodulated and decoded. The methods further comprise deactivating receiver circuitry, further in response to determining that the predetermined criterion is met.

A method includes: receiving, by a first user equipment (UE) from a base station, an indication of interference associated with an uplink signal of a second UE wherein the interference comprises a first numerology different from a second numerology used by the first UE; receiving a downlink communication from the base station; cancelling the interference from the downlink communication according to the indication; and decoding the downlink communication.