PATENT CLAIM ANALYSIS

Application Number: 15975153
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["370", "280000"]

Abstract:
Time-division duplexing (TDD) in distributed communications systems, including distributed antenna systems (DASs) is disclosed. In one embodiment, a control circuit is provided and configured to control the TDD transmit mode of a DAS to control the allocation of time slots for uplink and downlink communications signal distribution in respective uplink path(s) and downlink path(s). The control circuit includes separate power detectors configured to detect either a transmit power level in a downlink path or a receive power level in an uplink path. If the transmit power detected in the downlink path is greater than receive power detected in the uplink path, the control circuit switches the TDD transmit mode to the downlink direction. In this manner, the control circuit does not have to control the TDD transmit mode based solely on detected power in the downlink path, where a directional coupler may leak uplink power in the downlink path.

Claim (Index 1):
A communication system capable of supporting time-division duplexing (TDD), the communication system comprising:\n a central unit configured to receive a plurality of downlink signals; at least one remote unit configured to receive downlink signals from the central unit, and to return uplink signals to the central unit; and a control circuit for controlling TDD switching in the communication system, the control circuit comprising:\n a first power detector configured to determine a first power level; \n a second power detector configured to determine a second power level from an uplink path; \n a receive/transmit comparator coupled to the first power detector and to the second power detector, wherein the receive/transmit comparator compares the first power level to the second power level to provide an indication indicating when the first power level exceeds the second power level; and \n a transmit power comparator configured to determine whether the first power level exceeds a reference value and provide an indication indicative of whether the first power level exceeds the reference value, wherein the control circuit is configured to determine if the communication system should be switched to TDD transmit mode or TDD receive mode based at least in part on the received indication from the receive/transmit comparator and the received indication from the transmit power comparator; and \n a TDD switching circuit configured to effect the TDD transmit mode and a TDD receive mode for the communication system, the TDD switching circuit comprising an input switch and an antenna switch located between the input switch and the communication system.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 93.0
- Lexical Diversity: 2.34722
- Patent Class: 370.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14962338', '15303401', '14867478', '15655160', '11953911']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5539310212854538
- 35 USC 102 Novelty (BERT): 0.5520561362856531
- Combined Prediction Score: 0.5537435327854737
- Mean Citation Score: 269.820112
- Max Citation Score: 409.10568
- Similarity Product: 377.7920756153154

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