PATENT CLAIM ANALYSIS

Application Number: 16233444
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["375", "267000"]

Abstract:
A method for determining a precoding matrix indicator, user equipment, and a base station are disclosed in embodiments of the present invention. The method includes: receiving a first reference signal set sent by a base station, where the first reference signal set is associated with a user equipment-specific matrix or matrix set; selecting a precoding matrix based on the first reference signal set, where the precoding matrix is a function of the user equipment-specific matrix or matrix set; and sending a precoding matrix indicator to the base station, where the precoding matrix indicator corresponds to the selected precoding matrix. In the embodiments of the present invention, CSI feedback precision can be improved without excessively increasing feedback overhead, thereby improving system performance.

Claim (Index 18):
An apparatus, comprising:\n a receiver, configured to receive a first reference signal set from a base station, wherein the first reference signal set is associated with a user equipment-specific matrix A and a user equipment-specific matrix B; and a processor, configured to select a precoding matrix from a codebook subset based on antenna ports corresponding to the first reference signal set, wherein each precoding matrix W of the codebook subset is a product of a matrix W 1  and a matrix W 2 , the matrix W 1  is a block diagonal matrix comprising at least two block matrices, X i , i=1, 2, . . . , N B , N B \u22652, wherein each block matrix X i  is a Kronecker product of a matrix C i  and a matrix D i , X i =C i \u2297D i , wherein a k th  column vector c k  of the matrix C i  is a r th  rotation of m th  column vector a m  of the matrix A and a l th  column vector d l  of the matrix D i  is a s th  rotation of n th  column vector b n  of the matrix B, wherein\n c k =diag{1, e j2\u03c0r/N C , . . . ,e j2\u03c0rN V /N C }a m , k\u2265 0,  m\u2265 0,  r\u2265 0; \n d l =diag{1, e j2\u03c0s/N D , . . . ,e j2\u03c0sN H /N D }b n , l\u2265 0,  n\u2265 0,  s\u2265 0; \n and wherein N V , N C , N H  and N D  are integers.

Metadata:
- Claim Count in Document: 10.0
- Percentile: 98.0
- Lexical Diversity: 2.12698
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16107653', '15951153', '15950820', '14936092', '14937392']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5624419511981664
- 35 USC 102 Novelty (BERT): 0.6199146729214456
- Combined Prediction Score: 0.5681892233704944
- Mean Citation Score: 519.931026
- Max Citation Score: 580.7644
- Similarity Product: 512.4420883085728

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