PATENT CLAIM ANALYSIS

Application Number: 15955049
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["455", "456100"]

Abstract:
Embodiments of the present disclosure describe mechanisms for radio frequency (RF) ranging between pairs of radio units based on radio signals exchanged between units. An exemplary radio system may include a first radio unit, configured to transmit a first radio signal, and a second radio unit configured to receive the first radio signal, adjust a reference clock signal of the second radio unit based on the first radio signal, and transmit a second radio signal generated based on the adjusted reference clock signal. Such a radio system may further include a processing unit for determining a distance between the first and second radio units based on a phase difference between the first radio signal as transmitted by the first radio unit and the second radio signal as received at the first radio unit. Disclosed mechanisms may enable accurate RF ranging using low-cost, low-power radio units.

Claim (Index 24):
A radio unit, comprising:\n a receiver configure to receive a first radio signal transmitted by a further radio unit; a data processing unit configured to adjust a reference clock signal of the radio unit based on the first radio signal; and a transmitter configured to transmit a second radio signal generated based on the reference clock signal adjusted based on the first radio signal, wherein:\n the second radio signal is configured to enable determination of a distance between the radio unit and the further radio unit based on a phase difference between the first radio signal transmitted by the further radio unit and the second radio signal as received at the further radio unit, \n the first radio signal has a first frequency, \n the receiver is further configure to receive a third radio signal transmitted by the further radio unit, the third radio signal having a second frequency, different from the first frequency, \n the data processing unit is further for adjusting the reference clock signal of the radio unit based on the third radio signal, \n the transmitter is further for transmitting a fourth radio signal generated based on the reference clock signal adjusted based on the third radio signal, and \n the fourth radio signal is configured to further enable determination of the distance between the radio unit and the further radio unit based on a phase difference between the third signal transmitted by the further radio unit and the fourth signal received at the further radio unit.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 91.0
- Lexical Diversity: 2.55738
- Patent Class: 455.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15270444', '11750209', '12241681', '14058160', '14786413']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6723268023715119
- 35 USC 102 Novelty (BERT): 0.4639672293247807
- Combined Prediction Score: 0.6514908450668389
- Mean Citation Score: 135.674774
- Max Citation Score: 137.9964
- Similarity Product: 101.48582088332176

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