18073496. BACKSCATTER-BASED POSITIONING simplified abstract (QUALCOMM Incorporated)
Contents
BACKSCATTER-BASED POSITIONING
Organization Name
Inventor(s)
Xiaojie Wang of Hillsborough NJ (US)
Mohammad Tarek Fahim of San Diego CA (US)
Srinivas Yerramalli of San Diego CA (US)
BACKSCATTER-BASED POSITIONING - A simplified explanation of the abstract
This abstract first appeared for US patent application 18073496 titled 'BACKSCATTER-BASED POSITIONING
The patent application describes a method for wireless communication that supports backscatter-based positioning. This involves transmitting tag configuration messages, a positioning reference signal (PRS), and receiving backscatter signals from tag devices to determine round-trip times (RTT) for positioning.
- The method involves transmitting tag configuration messages indicating different tag configurations.
- A positioning reference signal (PRS) is transmitted as a reference for backscatter signals.
- Backscatter signals are received from tag devices based on the PRS.
- Round-trip times (RTT) are calculated for each tag device based on the received backscatter signals.
- Measurement reports are generated to indicate the RTT for each tag device and their respective configurations.
Potential Applications: - Indoor positioning systems - Asset tracking in warehouses - Inventory management in retail stores
Problems Solved: - Accurate positioning in indoor environments - Efficient asset tracking without the need for additional infrastructure
Benefits: - Cost-effective positioning solution - Scalable for large-scale deployments - Improved accuracy in indoor environments
Commercial Applications: Title: "Wireless Backscatter Positioning Technology for Indoor Asset Tracking" This technology can be used in industries such as logistics, retail, and manufacturing for efficient asset tracking and inventory management.
Prior Art: There are existing technologies for indoor positioning using RFID and Bluetooth, but backscatter-based positioning offers a more cost-effective and scalable solution.
Frequently Updated Research: Research on optimizing tag configurations for improved positioning accuracy in dynamic environments is ongoing.
Questions about Wireless Backscatter Positioning Technology:
Question 1: How does backscatter-based positioning compare to other indoor positioning technologies in terms of cost and accuracy? Answer: Backscatter-based positioning offers a cost-effective solution with comparable accuracy to other indoor positioning technologies.
Question 2: What are the limitations of backscatter-based positioning in terms of range and interference? Answer: Backscatter-based positioning may have limitations in range and susceptibility to interference in crowded environments.
Original Abstract Submitted
This disclosure provides systems, methods, and devices for wireless communication that support backscatter-based positioning. In a first aspect, a method of wireless communication includes transmitting a tag configuration message that indicates a first tag configuration and a second tag configuration. The method also includes transmitting a positioning reference signal (PRS). The method also includes receiving, from a first tag device, a first backscatter signal based on the PRS, and receiving, from a second tag device, a second backscatter signal based on the PRS. The method includes transmitting a measurement report that indicates a first round trip time (RTT) of the first tag device, and a second RTT of the second tag device. The first RTT is based on the first tag configuration and the first backscatter signal, and the second RTT is based on the second tag configuration and the second backscatter signal.
