PATENT CLAIM ANALYSIS

Application Number: 15981120
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["370", "281000"]

Abstract:
Frequency independent isolation of duplexed ports in distributed antenna systems (DASs) is disclosed. Instead of providing a duplexer in a DAS that provides frequency dependent separation between downlink and uplink communications signals, an isolation circuit is provided. The isolation circuit is coupled to a duplexed port that provides downlink communications signals to the DAS and receives uplink communications signals from the DAS. To isolate uplink communications signals from the downlink communications path, the isolation circuit includes a directional coupler. The directional coupler provides frequency independent isolation between uplink communications signals and a downlink communications path in the DAS. Further, to isolate downlink communications signals from the uplink communications path, the isolation circuit includes at least one circulator isolator. The circulator(s) acts as a one-direction device, allowing uplink communications signals to flow to the directional coupler with minimal attenuation while significantly attenuating downlink communications signals flowing from the directional coupler.

Claim (Index 1):
A wireless communications system (WCS), comprising:\n a head-end unit, comprising:\n a plurality of head-end downlink path circuits provided in a downlink communications path among a plurality of downlink communications paths, the plurality of head-end downlink path circuits each configured to receive a downlink communications signal in a downlink communications path from a duplexed port and provide the received downlink communications signal to at least one remote unit among a plurality of remote units; \n a plurality of head-end uplink path circuits provided in an uplink communications path among a plurality of uplink communications paths, the plurality of head-end uplink path circuits each configured to receive an uplink communications signal from a remote unit among the plurality of remote units in an uplink communications path and provide the received uplink communications signal to the duplexed port; \n the plurality of remote units being operatively coupled to at least one antenna and comprising:\n a remote downlink path circuit provided in at least one downlink communications path among the plurality of downlink communications paths, the remote downlink path circuit configured to receive downlink communications signals in the at least one downlink communications path from at least one head-end downlink path circuit among the plurality of head-end downlink path circuits and wirelessly transmit the received downlink communications signals over the at least one antenna to at least one client device; and \n a remote uplink path circuit provided in an uplink communications path, the remote uplink path circuit configured to wirelessly receive uplink communications signals from the at least one antenna from at least one client device in the uplink communications path and provide the received uplink communications signals over the uplink communications path to a head-end uplink path circuit to be provided to the duplexed port; and \n an isolation circuit configured to:\n receive the downlink communications signal from the duplexed port on a first coupler port of a directional coupler; \n direct a first portion of the received downlink communications signal on the first coupler port, to a second coupler port of the directional coupler coupled to the plurality of uplink communications paths; \n direct a second portion of the received downlink communications signal on the first coupler port, to a third coupler port of the directional coupler coupled to the downlink communications path; \n isolate the uplink communications signal received on the second coupler port of the directional coupler from the third coupler port to isolate the uplink communications signal from the second portion of the downlink communications signal directed to the third coupler port; \n receive uplink communications signals from each of the plurality of remote units on the plurality of uplink communications paths on a first circulator port in at least one circulator; and \n direct the received uplink communications signals on the first circulator port to a second circulator port of the at least one circulator, the second circulator port coupled to the second coupler port.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 93.0
- Lexical Diversity: 2.4058
- Patent Class: 370.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15131712', '14146964', '15490028', '15425389', '15975153']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5780627715311953
- 35 USC 102 Novelty (BERT): 0.6244063370650382
- Combined Prediction Score: 0.5826971280845796
- Mean Citation Score: 361.300144
- Max Citation Score: 560.41327
- Similarity Product: 550.3707881516481

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