PATENT CLAIM ANALYSIS

Application Number: 16186433
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["375", "267000"]

Abstract:
A channel state information CSI feedback method is disclosed for receiving a downlink symbol from a base station, where the downlink symbol includes a pilot; obtaining a channel matrix based on the pilot included in the downlink symbol; calculating a precoding matrix based on the channel matrix and a basic codebook; generating CSI based on the precoding matrix; and transmitting an uplink symbol to the base station, where the uplink symbol carries the CSI.

Claim (Index 5):
The method according to  claim 4 , wherein the antenna array comprises 2N 1 N 2  antennas, both the first group of antennas and the second group of antennas comprise N 1 N 2  antennas, and\n G =[ g 1 g 2  . . . g M 1 ],  g i \u2208\u03a9, 1\u2264 i\u2264M 1 , 1\u2264 M 1 \u2264L , and G =[ g 1 \u2032g 2 \u2032 . . . g M 1 \u2032],  g i \u2032\u2208\u03a9, 1\u2264 i\u2264M 2 , 1\u2264 M 2 \u2264L,  wherein \u03a9 is a preset group of (N 1 N 2 \u00d71) th -order vectors, the vectors are mutually orthogonal or not orthogonal, L is a quantity of vectors and L\u22652N 1 N 2 , the column vectors in G are mutually orthogonal or not orthogonal, and the column vectors in G\u2032 are mutually orthogonal or not orthogonal; W 2 = 1 1 + \u03c4 2 \ue8a0 [ A B ] , \u03c4 > 0 , wherein \u03c4 is a value of cross polarization leakage between a polarization direction of the second group of antennas and a polarization direction of the first group of antennas; A = [ \u03b2 1 \u03b2 2 \u22ee \u03b2 M 1 ] , \u03b2 i \u2208 \u03b4 , 1 \u2264 i \u2264 M 1 , and \u03b4 = { \u03bb i \ue89e e j \ue89e \ue89e \u03c6 i , 0 \u2264 \u03bb i \u2264 1 , 0 \u2264 \u03c6 i < 2 \ue89e \u03c0 , M 1 \u2264 i } , wherein \u0394 1  and \u03d5 i  are preset values, and \u03a3 i=1 M 1 |\u03b2 i | 2 =1; and B = \u03c4 \ue89e \ue89e e j \ue89e \ue89e \u03b8 | \u03b7 2 \u22ee | , 0 \u2264 \u03b8 < 2 \ue89e \u03c0 , \u03b7 i \u2208 \u03c3 , 1 \u2264 i \u2264 M 2 , and \u03c3 = { \u03b3 i \ue89e e j \ue89e \ue89e \u03d5 i , 0 \u2264 \u03b3 i \u2264 1 , 0 \u2264 \u03d5 i < 2 \ue89e \u03c0 , M 2 \u2264 i } , wherein \u03b8 is an angle of phase rotation of the second group of antennas relative to the first group of antennas, \u03b3 i  and \u03c6 i  are preset values, and \u03a3 i=1 M 2 |\u03b7 i | 2 =1.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 98.0
- Lexical Diversity: 1.97561
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14844714', '15935035', '16021786', '15206062', '14005764']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.557453882702686
- 35 USC 102 Novelty (BERT): 0.5180691575620645
- Combined Prediction Score: 0.5535154101886239
- Mean Citation Score: 278.20550800000007
- Max Citation Score: 287.3273
- Similarity Product: 172.3090097859144

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