Reflection direction control system, control device, reflection direction control method, and reflection direction control program
The reflection direction control system addresses the challenge of accommodating multiple wireless terminals by calculating and controlling phase shifts in RIS reflectors, effectively managing frequency and channel variations to enhance system efficiency.
JP7884735B2Active Publication Date: 2026-07-06NIPPON TELEGRAPH & TELEPHONE CORP +1
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NIPPON TELEGRAPH & TELEPHONE CORP
- Filing Date
- 2023-04-07
- Publication Date
- 2026-07-06
AI Technical Summary
Technical Problem
Conventional RIS reflectors struggle to efficiently accommodate multiple wireless terminals due to differing frequencies and channel variations, necessitating frequent phase control adjustments.
Method used
A reflection direction control system that calculates and controls the phase shift amount of a reflection section with multiple elements based on acquired reflection angle information, wavelength ratios, and determination of usable electromagnetic waves to efficiently accommodate multiple wireless terminals.
Benefits of technology
Enables a wireless communication system to efficiently accommodate multiple wireless terminals by reflecting electromagnetic waves with controlled phase shifts, addressing frequency and channel differences.
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Smart Images
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Abstract
To make it possible for a wireless communication system to efficiently accommodate a plurality of wireless terminals by reflecting a plurality of electromagnetic waves.SOLUTION: A reflection direction control system acquires reflection angle information that indicates reflection angles when electromagnetic waves are reflected from a reflection section to a plurality of wireless terminals at different positions when the electromagnetic waves are incident on the reflection section at a predetermined incident angle, calculates a wavelength ratio of the plurality of electromagnetic waves that are reflected at the respective reflection angles indicated by the reflection angle information when the reflection section reflects the electromagnetic waves that are incident at the incident angle, and determines whether the plurality of electromagnetic waves that are in a wavelength ratio can be used in a wireless communication system that relays the electromagnetic waves by reflecting them by the reflection section. When it is determined that it is usable, the reflection direction control system calculates a phase shift amount that causes the reflection section to reflect the plurality of electromagnetic waves that are in the wavelength ratio at the reflection angles indicated by the reflection angle information when the plurality of electromagnetic waves that are in the wavelength ratio are incident on the reflection section at the incident angle.SELECTED DRAWING: Figure 4
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