PATENT CLAIM ANALYSIS

Application Number: 16009185
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["370", "329000"]

Abstract:
This application discloses a downlink channel reconstruction method and apparatus. In one embodiment, the method includes: sending, by a base station, multiple different weighted pilot signals to a terminal, where each of the weighted pilot signals includes a product of a pilot signal and a weighting matrix; receiving, by the base station, multiple different optimal code words returned by the terminal, where each of the optimal code words is obtained based on a channel estimation of a weighted pilot signal; and reconstructing, by the base station, a downlink channel according to the multiple different optimal code words. According to the foregoing method, a quantization error can be reduced, so that a beam direction of a reconstructed channel correctly points to the terminal.

Claim (Index 20):
The non-transitory machine-readable medium according to  claim 18 , wherein the pilot weighting codebook is Q ang : Q ang = { Q s ang | Q s ang = I N T - 2 \ue89e \ue89e u s ang \ue8a0 ( u s ang ) H u s 2 \ue89e ang , s = 0 , L , S - 1 } , where\n I N T  is an N T -dimension identity matrix, N T  is a quantity of antenna ports of the base station, s is a sequence number variable, S is a quantity of elements of the pilot weighting codebook Q ang ; \n u s ang = [ [ 1 e j \ue89e \ue89e \u03b8 s e j \ue89e \ue89e 2 \ue89e \u03b8 s L e j \ue8a0 ( N T 2 - 1 ) \ue89e \u03b8 s ] [ 1 e j \ue89e \ue89e \u03b8 s e j \ue89e \ue89e 2 \ue89e \u03b8 s L e j \ue8a0 ( N T 2 - 1 ) \ue89e \u03b8 s ] \ue89e e j \ue89e \ue89e \u03d5 s ] ; and\n a value range of \u03b8 S  is \n ( 0 , \u03c0 2 ) , and a value range of \u03c6 S  is ( 0 , \u03c0 2 ) .

Metadata:
- Claim Count in Document: 32.0
- Percentile: 94.0
- Lexical Diversity: 2.20635
- Patent Class: 370.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12937521', '15503677', '15371840', '15326218', '12477255']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5923791891619462
- 35 USC 102 Novelty (BERT): 0.5064005546608408
- Combined Prediction Score: 0.5837813257118357
- Mean Citation Score: 221.723384
- Max Citation Score: 228.8104
- Similarity Product: 135.67280990366936

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