In accordance with an example embodiment of the present invention, a method, apparatus and software program product for partitioning channel state information into groups of different priority levels, wherein said channel state information comprises non zero coefficients and said partitioning comprises using at least one permutation function to prioritize said non-zero coefficients substantially based on an amplitude distribution of said non zero coefficients to determine mapping of said non zero coefficients to said groups, and further for omitting zero or more non-zero coefficients in accordance with said amplitude distribution based prioritizing from said groups, and for transmitting remaining non zero coefficients in said groups.

A system described herein may determine transformations, differences, variations, etc. in radio frequency (“RF”) waveforms sent by a device in order to detect motion-based events. Models associated with the differences in such RF waveforms may be used to identify particular types of events, such as the presence of an individual in a room or other area, a type of motion, or other types of events. An interval or rate at which the device outputs RF waveforms may be modified, in order to increase the resolution of the determination of differences between the RF waveforms as sent and the RF waveforms as received, and/or to conserve power.

Apparatuses, methods, and systems are disclosed for encoding reference signal received powers. One apparatus includes a processor that: determines a reference signal received power corresponding to each beam of multiple beams to result in a set of determined reference signal received powers; orders the set of determined reference signal received powers in descending order to result in an ordered list of reference signal received powers; and encodes a difference between each two adjacent reference signal received powers of the ordered list of reference signal received powers to result in an encoded ordered list of reference signal received powers.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may receive a configuration associated with reporting delta channel state information (CSI). The first wireless communication device may compute the delta CSI based at least in part on the configuration, the delta CSI indicating a difference between first CSI associated with a first connection and second CSI associated with a second connection, the first connection being between the first wireless communication device and a base station and the second connection being between the first wireless communication device and a second wireless communication device. The first wireless communication device may transmit, based at least in part on the configuration, a CSI report including an indication of the delta CSI and at least one of an indication of the first CSI or an indication of the second CSI. Numerous other aspects are described.

Aspects enable a user equipment (UE) to provide group-based beam reporting for multiple groups of beams. The UE measures a signal for each of a plurality of beams, wherein the plurality of beams are grouped into multiple groups of more than one beam that are capable of simultaneous operation. The UE transmits a channel state information (CSI) report comprising a group-based beam report for each of the multiple groups of more than one beam. Each group-based beam report comprised in the CSI report may indicate a beam metric for each beam of the more than one beam in a corresponding group. Each group-based beam report comprised in the CSI report may indicate a group beam metric for the one or more beams comprised in a corresponding group. A base station may configure the UE for the group-based beam reporting for multiple groups of more than one beam.

Differential feedback within multiple user, multiple access, and/or MIMO wireless communications. After full feedback signal(s) have been received by a communication device (e.g., one that is to be performing beamforming for use in subsequent signal transmission), differential feedback signal(s) are received. Those differential feedback signal(s) are employed to update the full feedback signal(s) thereby generating updated/modified full feedback signals. Over time, such updated/modified full feedback signals may subsequently be further updated based upon later received inferential feedback signal(s). Such differential feedback signaling takes advantage of time and/or frequency correlation in a communication channel to provide for reduced feedback overhead by feeding back a difference or delta (Δ) relative to a previous value. For example, instead of providing full feedback signals in each respective/successive communication, feedback overhead is reduced by providing a difference or delta (Δ).

Certain aspects of the present disclosure relate to a technique for communicating Channel State Information (CSI) feedback. In some aspects, the CSI feedback is communicated in a very high throughput (VHT) wireless communications system.

This application relates to a method for acquiring a CQI, a user equipment, an eNB and a system. The method includes: calculating CQIs of at least two subbands, where there is an overlapped resource block between the subbands; and transmitting the subband CQIs to an eNB. In the method for acquiring a channel quality indicator, the user equipment, the evolved node B and the system of the present application, there is an overlapped resource block between adjacent subbands, and meanwhile the channel quality of the resource block of the subband is obtained by using different subbands, thus the feedback accuracy of the channel quality of the resource block of each subband, especially the channel quality of the resource block in the subband overlapping area, thereby improving the granularity of frequency-selective scheduling, and improving the frequency-selective scheduling and the link adaptation, and therefore, the system throughput is increased.

Apparatuses, methods, and systems are disclosed for encoding reference signal received powers. One apparatus includes a processor that: determines a reference signal received power corresponding to each beam of multiple beams to result in a set of determined reference signal received powers; orders the set of determined reference signal received powers in descending order to result in an ordered list of reference signal received powers; and encodes a difference between each two adjacent reference signal received powers of the ordered list of reference signal received powers to result in an encoded ordered list of reference signal received powers.

A method implemented in a base station used in a wireless communications system is disclosed. The method comprises having 1-layer, 2-layer, 3-layer, and 4-layer codebooks for 4 transmit antenna (4TX) transmission, each codebook including a plurality of precoding matrices, (precoding data with one of the plurality of precoding matrices, and transmitting, to a user equipment, the precoded data, wherein each of the 1-layer and 2-layer codebooks comprises a first codebook and a second codebook, and wherein each precoding matrix in the first codebook comprises a first index and a second index. Other apparatuses, systems, and methods also are disclosed.