Samsung Electronics Co., Ltd.

Sooyoung Hur

Namjeong Lee

Hao Chen

Shiyang Leng

Ahmed Atef Ibrahim Ibrahim

Jaewon Kim

Jinho Lee

Hyunkyu Yu

Jianhua Mo

Kyungjoong Kim

Jeongho Park

Yongseok Park

Jongho Oh

Kyungwhoon Cheun

Jinyoung Jang

Changyeong Oh

Jung Il Han

Sung Tae Choi

Jeehye Cha

According to a method of an embodiment of the present disclosure, a method for correcting a beamforming pattern of a base station by an analysis server of a base station management network may comprise the steps of: when network management information is received from a first base station, identifying whether or not the network management information indicates the occurrence of a failure in an antenna element of the first base station; when the network management information indicates the occurrence of the failure in the antenna element of the first base station, analyzing an effect of a beamforming pattern of the first base station and analyzing a change in a cell coverage; on the basis of the result of the analysis, determining a first beamforming pattern for compensating for the failure in the antenna element; and transmitting, to the first base station, information about the first beamforming pattern by including the information in management control information.

Method and apparatus for correcting multi-input multi-output beamforming pattern in wireless communication system

Methods and apparatuses in a wireless communication system. A base station (BS) includes a transceiver and a processor. The processor regulates a transmit power in a direction of an earth station or a predefined receiver by: calculating a power flux density for the BS to the earth station or the predefined receiver; calculating an equivalent antenna gain for other base stations; calculating a directional power back-off level for the other base stations with respect to the earth station or the predefined receiver; generating a restricted precoding matrix indicator based on the calculated directional power back-off level; generating an N1-N2 bitmap for the BS; and applying the N1-N2 bitmap for signal transmission to at least one UE. The N1-N2 bitmap is generated based on: physical parameters of the earth station of the predefined receiver; physical parameters of the BS; an operator input metric; or restricted precoding matrix indicator.

Apparatus and method for N1-N2 bitmap generation for cellular communication system

Methods and apparatuses in a wireless communication system. A base station (BS) includes a transceiver and a processor. The processor is configured to transmit a common beam to at least one user equipment (UE). The processor is also configured to configure the common beam to have a null area in a direction of a satellite earth station, the null area defining a space within a coverage area of the common beam in which a signal from the common beam is suppressed.

System and method for beam directional nulling

An apparatus in a wireless communication system is configured to perform a method for directional beam nulling of SRS-based data beams. A base station (BS) includes a transceiver and a processor. The processor is configured to transmit a data beam to at least one user equipment (UE). The processor is also configured to configure the data beam to have a null area in a direction of a satellite earth station (ES), the null area defining a space within a coverage area of the data beam in which a signal from the data beam is suppressed. The data beam is configured by: generating one or more steering vectors to the ES; obtaining a UE channel matrix via a sounding reference signal (SRS) and determining a rank value; and generating a beamforming precoder configured to directional null the data beam in the direction of the ES.

System and method for beam directional nulling for SRS-based data beams

Apparatuses and methods for precoding matrix indicator (PMI)-based data beam nulling with a channel state information (CSI) report. An apparatus includes a transceiver configured to communicate via a wired or wireless communication medium and a processor coupled to the transceiver. The processor is configured to identify restricted PMI beams in a nulling direction for supported ranks; receive, via the transceiver from a user equipment (UE), a CSI report including a rank, a PMI, and channel quality indicator (CQI) feedback; and determine whether the reported PMI is restricted. The processor is further configured to select an alternative PMI among a number of unrestricted PMIs for the reported rank; boost a reported CQI if a reduced transmit power is configured; and select a modulation coding scheme (MCS) and generate a precoder for a data beam based on at least one of: the CSI report, the alternative PMI, and the boosted CQI.

PMI-based data beam nulling with a CSI report

The disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). An operation method of a communication node in a wireless communication system is provided. The operation method includes generating a default beam pattern, based on a plurality of radio-frequency (RF) paths, by applying beamforming parameters, detecting a path failure associated with at least one RF path among the plurality of RF paths, identifying beamforming parameters based on the default beam pattern in response to the detection, and generating a recovered beam pattern associated with the default beam pattern based on the identified beamforming parameters, wherein the beamforming parameters for generating the recovered beam pattern are determined based on a shape of the default beam pattern.

Apparatus and method of recovering beam pattern in wireless communication system

The present disclosure relates to a pre-5-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4-generation (4G) communication system such as long term evolution (LTE). An apparatus and a method for performing beamforming by using an antenna array in a wireless communication system are provided. The apparatus includes at least one antenna array comprising antenna elements, a control unit configured to determine a number of beams to be formed through the at least one antenna array, and a communication unit configured to adjust paths associated with the antenna elements in order to configure as many antenna subsets as the number of the beams, and to form at least one beam through at least one antenna subset configured from the at least one antenna array.

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Suwon-si, South Korea

Sooyoung Hur