PATENT CLAIM ANALYSIS

Application Number: 15891162
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["370", "252000"]

Abstract:
Various embodiments disclosed herein provide for a reciprocity based channel state information acquisition scheme for frequency division duplex wireless communications systems. By converting channel state information from a traditional frequency-time domain to a Delay-Doppler domain, the channel state information feedback overhead can be reduced since the multi-path of radio propagation is reciprocal in terms of each ray and each cluster of antenna elements. Since the surrounding objects create the same multipath fading for both uplink and downlink transmissions, modeling the channel state information in the Delay-Doppler domain, and adjusting the sign of the Doppler value (negative/positive) can account for the multipath characteristics in both uplink and downlink

Claim (Index 10):
A method, comprising:\n receiving, by a user equipment device comprising a processor, an uplink reference signal from a user equipment device; based on the uplink reference signal, determining, by the user equipment device, delay Doppler domain channel state information, wherein the delay Doppler domain channel state information comprises a covariance matrix; and based on whether an element is an uplink element, adjusting, by the user equipment device, a Doppler value of an element of the covariance matrix.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 88.0
- Lexical Diversity: 1.58333
- Patent Class: 370.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15376377', '15588100', '15699662', '15632837', '13788170']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4823153671524333
- 35 USC 102 Novelty (BERT): 0.4834261825187065
- Combined Prediction Score: 0.4824264486890606
- Mean Citation Score: 166.56351
- Max Citation Score: 170.03168
- Similarity Product: 119.65929049842836

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 0

Dataset: test