18546037. RECONFIGURABLE INTELLIGENT SURFACE (RIS) AIDED USER EQUIPMENT (UE)-BASED ROUND-TRIP-TIME (RTT) POSITIONING simplified abstract (QUALCOMM Incorporated)
RECONFIGURABLE INTELLIGENT SURFACE (RIS) AIDED USER EQUIPMENT (UE)-BASED ROUND-TRIP-TIME (RTT) POSITIONING
Organization Name
Inventor(s)
Weimin Duan of San Diego CA (US)
Alexandros Manolakos of Escondido CA (US)
RECONFIGURABLE INTELLIGENT SURFACE (RIS) AIDED USER EQUIPMENT (UE)-BASED ROUND-TRIP-TIME (RTT) POSITIONING - A simplified explanation of the abstract
This abstract first appeared for US patent application 18546037 titled 'RECONFIGURABLE INTELLIGENT SURFACE (RIS) AIDED USER EQUIPMENT (UE)-BASED ROUND-TRIP-TIME (RTT) POSITIONING
Simplified Explanation
The patent application describes techniques for wireless positioning using reconfigurable intelligent surfaces (RIS). Here is a simplified explanation of the abstract:
- User equipment (UE) sends a signal to a reconfigurable intelligent surface (RIS) and receives a reflection of the signal.
- The reflection includes transmission parameters that identify it as the reflection of the original signal.
- The distance between the UE and the RIS is calculated based on the time difference between transmission and reception of the signal.
- Potential Applications
The technology can be used for accurate indoor positioning, asset tracking, and location-based services.
- Problems Solved
This technology solves the problem of accurately determining the position of wireless devices in indoor environments where GPS signals may be weak or unavailable.
- Benefits
The benefits of this technology include improved accuracy in wireless positioning, enhanced indoor navigation, and better location-based services.
- Potential Commercial Applications
Commercial applications include indoor navigation systems for shopping malls, airports, hospitals, and warehouses, as well as asset tracking solutions for inventory management.
- Possible Prior Art
Prior art may include existing wireless positioning technologies using signal reflections, such as Time of Flight (ToF) measurements in indoor positioning systems.
- Unanswered Questions
- How does this technology handle multipath interference in indoor environments?
The patent application does not specifically address how the technology mitigates multipath interference, which can affect the accuracy of wireless positioning systems in indoor environments.
- What is the power consumption of the user equipment when using this wireless positioning technique?
The patent application does not provide information on the power consumption of the user equipment when implementing the wireless positioning technique using reconfigurable intelligent surfaces.
Original Abstract Submitted
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) transmits an uplink reference signal towards a first reconfigurable intelligent surface (RIS) associated with at least one base station, receives, from the first RIS, a reflection of the uplink reference signal, wherein at least one transmission parameter of the reflection identifies the reflection as the reflection of the uplink reference signal, and enables a distance between the UE and the first RIS to be calculated based, at least in part, on a transmission-to-reception (Tx-Rx) time difference measurement for the UE, the Tx-Rx time difference measurement representing a difference between a transmission time from the UE of the uplink reference signal to the first RIS and a reception time at the UE of the reflection of the uplink reference signal from the first RIS.
