PATENT CLAIM ANALYSIS

Application Number: 16248344
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["375", "267000"]

Abstract:
A method and apparatus for precoding matrix indicator feedback reduce a quantity of bits in the feedback. In the method, a terminal device receive a reference signal from a base station and determines a precoding matrix W in a precoding matrix set corresponding to a rank indication. W satisfies W=W 1 ×W 2 ×W 3 , where W 1 , W 2  and W 3  are matrices and respectively corresponding to a first, second and third precoding matrix indicator. None of W 1 , W 2 , and W 3  is an identity matrix, and the 2M columns in W 1  comprise every column in W 1 ×W 2 . The terminal device transmits the rank indication, the first precoding matrix indicator, the second precoding matrix indicator, and the third precoding matrix indicator to the base station.

Claim (Index 1):
A method, comprising:\n receiving, by a terminal device, a reference signal from a base station; based on the received reference signal, determining, by the terminal device, a precoding matrix W in a precoding matrix set,\n wherein W satisfies W=W 1 \u00d7W 2 \u00d7W 3 , wherein W is a matrix of N t  rows and R columns, wherein N t  is a quantity of antenna ports, wherein R is a rank value corresponding to a rank indication, wherein N t  is an even number, and wherein N t  is greater than or equal to R; \n wherein W 1  is a matrix of N t  rows and 2M columns, wherein W 2  is a matrix of 2M rows and 2K columns, wherein W 3  is a matrix of 2K rows and R columns, wherein N t , R, M, and K are all positive integers, wherein K is less than M, and wherein M is greater than or equal to 2; and \n wherein none of W 1 , W 2 , and W 3  is an identity matrix, and wherein the 2M columns in W 1  comprise every column in W 1 \u00d7W 2 , wherein the first precoding matrix W 1  corresponds to a first precoding matrix indicator, the second precoding matrix W 2  corresponds to a second precoding matrix indicator, and the third precoding matrix W 3  corresponds to a third precoding matrix indicator; and \n sending, by the terminal device, the rank indication, the first precoding matrix indicator, the second precoding matrix indicator and the third precoding matrix indicator to the base station.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 99.0
- Lexical Diversity: 2.53448
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16148296', '16146599', '15951153', '14936092', '15950820']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4647366368614492
- 35 USC 102 Novelty (BERT): 0.5646652977905042
- Combined Prediction Score: 0.4747295029543547
- Mean Citation Score: 317.360192
- Max Citation Score: 424.06552
- Similarity Product: 418.2869086349582

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