A method, an electronic device with a memory configured to store a hierarchical codebook with a processor operably connected to the memory to perform the method, and a non-transitory computer-readable medium storing instructions that when executed by a processor of an electronic device cause the electronic device to perform the method. The method identifies input data including at least one of an array size, an antenna element spacing, a phase-shifter resolution, a specified coverage region, or an antenna element pattern. The input data is processed by putting an initial beam through a non-decreasing concave utility function which uses a cyclic coordinate descent algorithm that generates a wide beam meeting one or more design specifications. A codebook is produced that includes the wide beam.

The disclosure includes a host operating in a communication system to provide an over-the-top (OTT) service. The host includes processing circuitry configured to initiate transmission of user data to a network node in a cellular network to a user equipment (UE). The network node is configured to receive a CSI report for a downlink channel from a wireless device and transmit the user data from the host to the UE to provide the OTT service based on the CSI report. The CSI report includes a set of reported coefficients; an indication of how the network node is to interpret the set of reported coefficients, wherein the indication of how the network node is to interpret the set of reported coefficients indicates the set of reported coefficients as a subset of a set of candidate reported coefficients; and an indication of a payload size of the set of the reported coefficients.

Disclosed herein are a method and a device for transmitting an uplink channel in a wireless communication system. According to the present disclosure, a UE transmits to a base station information associated with uplink transmission supported by the UE and the UE information includes a subset including at least one transmit precoding matrix indicator (TPMI) supported by the UE. The UE may receive from the base station uplink transmission information including a TPMI for transmitting an uplink channel and transmit to the base station the uplink channel based on the uplink transmission information, and the uplink channel may be transmitted through full transmission power configured by the base station based on a case where the TPMI is included in the subset.

A user equipment (UE) for channel state information (CSI) comprises receiving configuration information for K CSI reports, wherein the configuration information includes resource allocation information for an uplink control information (UCI) transmission that includes UCI comprising N UCI parts, calculating the K CSI reports and partitioning the K CSI reports into N parts, determining an available number of information bits (B1) for the UCI transmission according to the resource allocation information, determining a required number of information bits (B2) for the UCI transmission according to the calculated K CSI reports, determining whether the B2 exceeds the B1; and transmitting, to the BS over one slot of an uplink channel, a first part of the N UCI parts including a first of the N parts of the K CSI reports when the B2 exceeds the B1, wherein K and N are positive integers.

A method for assisting the adaptation of a signal from a first node to a second node is provided. The first node communicates with the second node in a wireless communication system over a radio link. The second node has a codebook comprising a set of possible information alternatives for assisting the adaptation of a signal received from the first node. The second node may select an information alternative from the codebook and send it to the first node to assist the first node in adapting the signal. The first node is configured with a number of subsets, each comprising a part of the possible information alternatives. The first node requests that the second node restrict the selection of information alternatives to one of the subsets, and in response, receives an information alternative from the second node that is selected from among the subsets configured according to the configuration request.

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate beyond a 4G communication system such as LTE. To this end, a base station using a large-scale antenna transmits, to a terminal, reference signal resource configuration information including multiple pieces of reference signal configuration information and reference signal port information, for transmission of a reference signal, and transmits the reference signal to the terminal using some or all of channel measurement resources indicated by the multiple pieces of reference signal configuration information and the reference signal port information included in the reference signal resource configuration information. In this case, the channel measurement resources may correspond to antenna ports, the number of which is indicated by a combination of the multiple pieces of reference signal configuration information and the reference signal port information.

Apparatuses, methods, and systems are disclosed for precoding wireless communications. An apparatus includes a processor and a memory coupled with the processor. The memory includes instructions that are executable by the processor to cause the apparatus to precode a set of symbols over a set of resources using a transform precoder that constrains a search space of codewords to a unit hypersphere such that the transform precoder comprises a spherical codebook having an angular threshold distance between codewords and to combine the precoded symbols in a redundant manner such that multiple parts of precoded symbols are used to protect against loss of the set of symbols.

A relay device relaying, to a reception device, a signal stream transmitted by a transmission device through MIMO transmission, the relay device including a lattice base reduction processing unit transforming bases of the signal stream transmitted by the transmission device through MIMO transmission, to increase orthogonality of a lattice of the signal stream, a MIMO equalization unit detecting, by equalization, reception symbols in the signal stream with the bases transformed by the lattice base reduction processing unit, a symbol quantization unit performing quantization by mapping the reception symbols detected by the MIMO equalization unit, to a region on a complex plane delimited by quantization threshold values, and a transmission unit transmitting, to the reception device, at least a signal quantized by the symbol quantization unit.

Various embodiments include an apparatus to be employed by an enhanced Node B (eNB), the apparatus comprising communication circuitry to receive, from a user equipment (UE), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the UE, wherein the communication circuitry is further to precede data to be transmitted to the UE based on the codeword. An apparatus to be employed by a UE and additional methods are described.

Provided are a method and apparatus for uplink transmission, a method and apparatus for receiving signal, a terminal device, a service node and a non-transitory computer-readable storage medium. The method for uplink transmission may include: performing beamforming on a Sounding Reference Signal (SRS) according to a target parameter, and transmitting the SRS beamformed, wherein the target parameter is determined according to downlink channel information; receiving precoding information; and transmitting an uplink transmission signal according to the target parameter and the precoding information.