Positioning reference signal configuration for backscatter-based positioning procedure
AssigneeQUALCOMM Incorporated
InventorsMohammad Tarek Fahim, Srinivas Yerramalli, Piyush Gupta, Xiaojie Wang, Xiaoxia Zhang, Rajat Prakash
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Abstract
Provided herein are devices and techniques for wireless communication. In an aspect, a radio frequency identification (RFID) device may receive a positioning reference signal that is transmitted over a set of radio resources of a wireless communications network, the positioning reference signal including a first temporal portion for energy harvesting and a second temporal portion for backscattering. The RFID device may transmit a backscattered signal based on at least a part of the second temporal portion of the positioning reference signal.
Claims29
A method of operating a radio frequency identification (RFID) device, the method comprising:
- receiving a positioning reference signal that is transmitted over a set of radio resources of a wireless communications network, the positioning reference signal including a first temporal portion for energy harvesting and a second temporal portion for backscattering;
- transmitting a backscattered signal based on at least a part of the second temporal portion of the positioning reference signal;
- and
- receiving a configuration message from a location server or an RFID station, the configuration message indicating at least a configuration of the set of radio resources for the positioning reference signal.
A method of operating a location server, the method comprising:
- transmitting a first configuration message to one or more transmitting radio frequency identification (RFID) stations, the first configuration message indicating at least a first configuration of a set of radio resources of a wireless communications network for a positioning reference signal, the positioning reference signal including a first temporal portion for energy harvesting and a second temporal portion for backscattering;
- and
- transmitting a second configuration message to one or more receiving RFID stations, the second configuration message indicating at least a second configuration of a monitor window for observing a backscattered signal from an RFID device based on the second temporal portion of the positioning reference signal.
A method of operating a radio frequency identification (RFID) station, the method comprising:
- receiving a first configuration message from a location server, the first configuration message indicating at least a first configuration of a set of radio resources of a wireless communications network for a positioning reference signal, the positioning reference signal including a first temporal portion for energy harvesting and a second temporal portion for backscattering;
- and
- transmitting the first temporal portion, the second temporal portion, or both, of the positioning reference signal.
A method of operating a radio frequency identification (RFID) station, the method comprising:
- receiving a first configuration message from a location server, the first configuration message indicating at least a first configuration of a monitor window for observing a backscattered signal from an RFID device based on a positioning reference signal, the positioning reference signal being transmitted over a set of radio resources of a wireless communications network, and the positioning reference signal including a first temporal portion for energy harvesting and a second temporal portion for backscattering;
- receiving the backscattered signal based on the monitor window;
- and
- transmitting a measurement report of the backscattered signal to the location server.
Dependencies are inferred from the claim text.