PATENT CLAIM ANALYSIS

Application Number: 16221123
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["375", "267000"]

Abstract:
The present invention relates to a method for transmitting, by a base station, a downlink signal using a plurality of transmission antennas comprises the steps of: applying a precoding matrix indicated by the PMI, received from a terminal, in a codebook to a plurality of layers, and transmitting the precoded signal to the terminal through a plurality of transmission antennas. Among precoding matrices included in the codebook, a precoding matrix for even number transmission layers can be a 2×2 matrix containing four matrices (W 1 s ), the matrix (W 1 ) having rows of a number of transmission antennas and columns of half the number of transmission layers, the first and second columns of the first row in the 2×2 matrix being multiplied by 1, the first column of the second row being multiplied by coefficient “a” of a phase, and the first column of the second row being multiplied by “−a”.

Claim (Index 9):
A method for receiving a precoding matrix indicator (PMI) by a base station (BS) in Multi-Input Multi-Output (MIMO) system, the method comprising:\n receiving, by the BS from a user equipment (UE), a PMI for a precoding matrix among a plurality of precoding matrices related to a downlink transmission of 4 layers in a codebook; and transmitting, by the BS to the UE, a downlink signal via 2\u00b7N transmit antennas, wherein the downlink signal is applied at least one precoding matrix among the plurality of precoding matrices, wherein the plurality of precoding matrices are configured in a form of [ v \ue89e \ue89e 1 v \ue89e \ue89e 2 v \ue89e \ue89e 1 v \ue89e \ue89e 2 a \u00b7 v \ue89e \ue89e 1 a \u00b7 v \ue89e \ue89e 2 - a \u00b7 v \ue89e \ue89e 1 - a \u00b7 v \ue89e \ue89e 2 ] , wherein N is positive integer, a is a coefficient of a phase and, each of v 1  and v 2  is an N 1 \u00d7N 2  matrix.

Metadata:
- Claim Count in Document: 12.0
- Percentile: 98.0
- Lexical Diversity: 2.49275
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13639991', '14310174', '15676543', '15133506', '14664401']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5416995079299239
- 35 USC 102 Novelty (BERT): 0.5792581550325101
- Combined Prediction Score: 0.5454553726401826
- Mean Citation Score: 455.450656
- Max Citation Score: 487.6367
- Similarity Product: 404.4677666770935

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test