Positioning method and communication device
By employing orthogonal sequences for signal modulation and interference removal, the method improves positioning accuracy in backscatter-based systems by addressing interference issues, ensuring precise location of communication devices and backscatter edges.
JP2024547132AActive Publication Date: 2024-12-26VIVO MOBILE COMM CO LTD
Patent Information
- Application Number
- JP2024538297
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2021-12-31
- Filing Date
- 2022-12-30
- Publication Date
- 2024-12-26
- Estimated Expiration
- 2042-12-30
AI Technical Summary
Technical Problem
Existing positioning technologies based on backscatter characteristics suffer from poor accuracy due to interference signals, which affect the sensing and positioning process.
Method used
Implementing a method that uses orthogonal sequences, such as binary phase shift keying (BPSK) modulation, to modulate and control signal phases or reflection states of backscatter edges, allowing the second communication device to process target signals and remove interference, thereby improving positioning accuracy.
Benefits of technology
The method enhances positioning accuracy by effectively eliminating interference signals and improving signal-to-noise ratio, enabling precise location of communication devices and backscatter edges.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2024547132000001_ABST
Abstract
The present application discloses a positioning method, apparatus, and communication device, which belong to the field of communication technology. The positioning method of an embodiment of the present application includes the steps of: a backscattering end receiving a first signal transmitted by a first communication device; the backscattering end modulating the first signal according to a second reference signal modulation sequence or a third reference signal modulation sequence to obtain a second signal; and the backscattering end transmitting the second signal to a second communication device, wherein the second reference signal modulation sequence is an orthogonal sequence determined according to binary phase shift keying (BPSK) modulation information, and the third reference signal modulation sequence is determined according to the second reference signal modulation sequence.
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Dynamic co-operative arrays of electromagnetic markers for highly autonomous vehicle location and cryptographically secure transactions
US20200211372A1
Method and apparatus for low power transmission using backscattering
US20210250868A1
Reference signal design and device procedures for downlink-based positioning / ranging using multi-frequency phase difference of arrival
WO2021155210A1