PATENT CLAIM ANALYSIS

Application Number: 15744909
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-01
Patent Classification: ["370", "329000"]

Abstract:
Signal transmitting/receiving electronic devices or terminals in the present disclosure are configured to conduct per-beam signal synchronization in massive MIMO communication with a signal receiving/transmitting device or base station. During the massive MIMO communication, the devices or terminals are configured to transmit/receive signals via a set of beams to or from the signal receiving/transmitting device or base station. For beam domain signal of each individual beam of the plurality beams, the devices or terminals are configured to determine target time adjustments based on time shifts of the beam domain signals induced by multipath effect and target frequency adjustments based on frequency offsets of the beam domain signals induced by the Doppler effect; adjust time independent variables of the beam domain signals by the time adjustments; and adjust frequency independent variables of the beam domain signals by the frequency adjustments. Further, per-beam synchronized BDMA massive MIMO transmission method is disclosed, which provides a solution to efficient and reliable wireless communications with high mobility and/or high carrier frequency.

Claim (Index 41):
A beam division multiple access (BDMA) based massive multiple-input multiple-output (MIMO) downlink transmission method with per-beam time/frequency synchronization, comprising:\n a. Both the base stations and user terminals are equipped with large antenna arrays where the numbers of array antennas are several or several dozens. b. BDMA based wireless transmission is performed in the beam domain; beamforming performed at both the base stations and the user terminals divides the channels in the space; the numbers of beams formed at the base stations and the user terminals are several or several dozens. c. Synchronization of the transmission signals in BDMA is performed over each beam individually in beam sets of user terminals; each user terminal estimates the time/frequency adjustment parameters of the signals over each beam individually based on the received synchronization signals sent from the base stations. d. User terminals apply time/frequency synchronization to the received signals based on the estimates of the time/frequency adjustment parameters over each receive beam individually. e. Base stations perform beam and user scheduling to select the user terminals that communicate with the base station over the same time/frequency resources and the corresponding transmit beams for each user terminal based on the beam domain channel statistics or partial information; the base station beam sets assigned to different scheduled user terminals are mutually non-overlapping. f. Base stations transmit the pilot signals and data signals over the assigned beams for each scheduled user terminal; each scheduled user terminal applies per-beam time/frequency synchronization to the received signal over the receive beams; pilot signals are not required to be orthogonal for different user terminals. g. Above described BDMA based massive MIMO downlink wireless transmission is dynamically adjusted when the statistics or partial information of the channels between the base stations and the user terminals vary.

Metadata:
- Claim Count in Document: 10.0
- Percentile: 86.0
- Lexical Diversity: 2.22785
- Patent Class: 370.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14232193', '14725159', '14725138', '15810588', '15767261']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5405642652277739
- 35 USC 102 Novelty (BERT): 0.4804685891239036
- Combined Prediction Score: 0.5345546976173869
- Mean Citation Score: 196.989814
- Max Citation Score: 205.19821
- Similarity Product: 152.9705624828517

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

Dataset: test