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 15):
The apparatus according to  claim 9 , wherein the programming instructions further instruct the processor to:\n calculate matrices corresponding to the multiple different optimal code words returned by the terminal, to obtain multiple intermediate variables Y t , wherein\n Y t =y t y t H , \n y t =Q s(t) w ( t ), and \n t is a time at which a weighted pilot signal is sent, Q s(t)  is a weighting matrix used for the weighted pilot signal that is sent at time t, and w(t) is a precoding matrix corresponding to an optimal code word that is returned by the terminal according to the weighted pilot signal sent at time t; and perform weighting according to the multiple intermediate variables Y t  to obtain an average result Z(t), wherein Z \ue8a0 ( t ) = 1 S \ue89e \u2211 r = 0 S - 1 \ue89e a \ue8a0 ( r ) \ue89e Y \ue8a0 ( t - r ) , r is an free variable, S is a quantity of the intermediate variables Y t , 0<a 0 <a 1 <L<a S-1 <1, and \u03a3 r=0 S-1 a(r)=1; and perform singular value decomposition on the average result Z(t) to obtain a principal eigenvector, and reconstructing the downlink channel according to the principal eigenvector.

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): 0.5930401806551305
- 35 USC 102 Novelty (BERT): 0.5035023585548873
- Combined Prediction Score: 0.5840863984451062
- Mean Citation Score: 221.723384
- Max Citation Score: 228.8104
- Similarity Product: 141.63819678320883

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