In one embodiment, a method comprises: a first network device in a deterministic network identifying first and second slots for transmission of a data packet toward a destination device along a deterministic track of the deterministic network, the first slot reserved for the first network device receiving the data packet from a second network device and the second slot reserved for transmission by the first network device of the data packet toward the destination device along the deterministic track; the first network device detecting, in the first slot, an absence of receiving the data packet from the second network device; and the first network device selectively generating and transmitting in the second slot, in response to the absence of receiving the data packet, a management packet along the deterministic track.

A method for transmitting a reference signal for channel measurement (CSI-RS) to a user equipment; a base station therefore; a method for receiving a CSI-RS; and the user equipment therefore are discussed. The method for transmitting a CSI-RS according to one embodiment includes transmitting CSI-RS pattern information for indicating a pattern of time-frequency resource to be nulled, hereinafter referred to as null CSI-RS pattern, and CSI-RS subframe information for indicating in which subframe the null CSI-RS pattern occurs; and nulling a time-frequency resource corresponding to the null CSI-RS pattern in a subframe corresponding to the CSI-RS subframe information, hereinafter referred to as null CSI-RS subframe, based on the CSI-RS pattern information and the CSI-RS subframe information. The CSI-RS subframe information includes information indicating a periodic interval with which the null CSI-RS subframe occurs. The periodic interval corresponds to a plurality of subframes.

Techniques are described for wireless communication. One method includes identifying a plurality of channel responses corresponding to a plurality of channels. Each channel of the plurality of channels corresponds to a pairing of a transmit antenna with a receive antenna. Each channel response of the plurality of channel responses corresponds to a plurality of tone subsets. The method also includes selecting, for each channel of the plurality of channels, a subset of non-frequency domain components of the channel response for the channel, and transmitting, for at least one channel of the plurality of channels, at least one subset of channel state information (CSI). The at least one subset of CSI is based at least in part on at least one of the selected subsets of non-frequency domain components.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a channel estimation method and apparatus by a reception end. The reception device includes a receiver and a controller. The receiver receives a reference signal. The controller identifies a first set of channel values for resources allocated for reference signals. The controller performs interpolation on the first set of channel values so as to identify second set of channel values for remaining resources. The interpolation method is determined based on at least one of Doppler frequency of a channel and channel quality. The controller processes received signals using the first set of channel values and the second set of channel values.

The disclosure relates to a method (60) performed in a network node (2) for estimating a channel. The network node (2) controls an antenna array (3) comprising a number N of antennas (51, . . . , 5N) in one or more spatial dimensions. The network node (2) comprises a receiver (72) receiving signals from the antenna array (3). The method (60) comprises: obtaining (61) matched filter channel estimates for each sub-carrier and antenna of a signal received by the antennas (51, . . . , 5N), the signal comprising a number K of frequency sub-carriers; arranging (62) the obtained matched filter channel estimates in a first multi-dimensional array, wherein time or frequency domain samples of the matched filter channel estimates are arranged along a first dimension and wherein a second dimension is a first spatial dimension of the number N of antennas, wherein the matched filter channel estimates are ordered in the first multi-dimensional array such as to reflect the physical location in space of the antennas (51, . . . , 5N); applying (63) an orthogonal transform to the first multi-dimensional array, providing a second multi-dimensional array; de-noising (64) the second multi-dimensional array, providing a third multi-dimensional array; applying (65) the inverse of the orthogonal transform to the third multi-dimensional array, providing channel estimates for all branches of the receiver (72). The disclosure also relates to corresponding network node, computer program and computer program products.

Disclosed is an apparatus, computer implemented method and method for preforming channel estimation in a millimeter wave wireless communication system which includes receiving complementary sequences at a receiver of the millimeter wave wireless communication system; estimating a channel estimation of a channel among the received complementary sequences; estimating a signal-to-noise ratio (SNR) estimation of the channel; detecting a maximum channel response value of the channel estimation; computing a de-noised threshold value from the maximum channel response value and the SNR estimation of the channel; comparing the de-noised threshold value to the channel estimation to detect a last valid tap of a channel impulse response; and zeroing out all the taps after the detected last valid tap of the channel impulse response.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may receive, from a second network node, codebook information that indicates a plurality of beams associated with an oversampled transmitter network node beamforming codebook. The first network node may transmit a beam selection report that indicates at least one suggested transmission beam associated with the oversampled transmitter network node beamforming codebook, wherein the beam selection report is based at least in part on a channel estimate that is obtained without obtaining beam measurements associated with beams that are associated with the oversampled transmitter network node beamforming codebook. Numerous other aspects are described.