PATENT CLAIM ANALYSIS

Application Number: 15897082
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["370", "252000"]

Abstract:
Embodiments of the present disclosure provide a channel state information feedback method, which includes: determining, by user equipment, N CSI-RS resources according to a quantity N, configured by a base station, of CSI-RS resources that need to be fed back; performing channel estimation on a port included in the N CSI-RS resources, to obtain channel state information in a horizontal dimension; then selecting M CSI-RS resources from the N CSI-RS resources; and feeding back channel state information of the M CSI-RS resources in the horizontal dimension and indication information of the M CSI-RS resources to the base station, so that the base station determines channel state information in a vertical dimension according to the indication information, so as to finally obtain channel state information in the two dimensions, thereby resolving a problem that channel state information in only a horizontal dimension is fed back during conventional channel estimation.

Claim (Index 16):
The user equipment according to  claim 15 , wherein:\n a precoding matrix for the X antenna ports is W=W1\u00d7W2; a first codeword (W1) is W 1 \ue8a0 ( k , l ) = [ X ~ H k \u2297 X ~ V l 0 0 X ~ H k \u2297 X ~ V l ] , wherein k=0, . . . , M a Q H \u22121, l=0, . . . , N a Q V \u22121, M a  is a quantity of co-polarized antennas in a horizontal dimension of the antenna array, N a  is a quantity of co-polarized antennas in a vertical dimension of the antenna array, Q H  is an over-sampling factor in the horizontal dimension of the antenna array, and Q V  is an over-sampling factor in the vertical dimension of the antenna array;\n {tilde over (X)} V l =\u2514X V l\u2032  X V l\u2032+1  . . . X V l\u2032+N V b \u22121 \u2518, l=0, . . . L, l\u2032=f(l), where {tilde over (X)} V l  is a first precoding matrix corresponding to the vertical dimension of the antenna array, l is an index PMI_V 1 of the first precoding matrix corresponding to the vertical dimension, and L is a total quantity of first precoding matrices corresponding to the vertical dimension; \n {tilde over (X)} H k =\u2514X H k\u2032  X H k\u2032+1  . . . X H k\u2032+N H b \u22121 \u2518, k=0, . . . K, k\u2032=f(k), where {tilde over (X)} H k  is a first precoding matrix corresponding to the horizontal dimension of the antenna array, k is an index PMI_H 1 of the first precoding matrix corresponding to the horizontal dimension, and K is a total quantity of first precoding matrices corresponding to the horizontal dimension; and \n X l = [ 1 e j \ue89e \ue89e 2 \ue89e \u03c0 \ue89e l NQ \u2026 e j \ue89e \ue89e 2 \ue89e \u03c0 \ue89e ( N - 1 ) \ue89e l NQ ] T , l = 0 , \u2026 \ue89e , NQ - 1.

Metadata:
- Claim Count in Document: 6.0
- Percentile: 88.0
- Lexical Diversity: 2.45455
- Patent Class: 370.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14349875', '14680549', '15778395', '13650813', '13991152']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.626114496996357
- 35 USC 102 Novelty (BERT): 0.5238687111355261
- Combined Prediction Score: 0.615889918410274
- Mean Citation Score: 328.02226
- Max Citation Score: 330.72617
- Similarity Product: 200.49280136073293

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