Frequency difference for ambient device decoding
AssigneeQUALCOMM Incorporated
InventorsZhifei Fan, Jing Sun, Piyush Gupta
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Abstract
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a reader device may transmit a delta message that indicates a frequency difference between a data tone frequency for the reader device and a helper tone frequency. The reader device may transmit a data tone signal at the data tone frequency and a helper tone signal at the helper tone frequency. The helper tone signal may be a waveform that is shared among multiple reader devices. Numerous other aspects are described.
Claims22
A reader device for wireless communication, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to:
- transmit a delta message that indicates a frequency difference between a data tone frequency for the reader device and a helper tone frequency;
- and
- transmit a data tone signal at the data tone frequency and a helper tone signal at the helper tone frequency, wherein the helper tone signal is a waveform shared among multiple reader devices.
An ambient device for wireless communication, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to:
- receive a first delta message that indicates a first frequency difference between a first data tone frequency and a helper tone frequency;
- and
- receive, from a first reader device, a first data tone signal at the first data tone frequency and a helper tone signal at the helper tone frequency, wherein the helper tone signal is a waveform that is shared among multiple reader devices.
A method of wireless communication performed by a reader device, comprising:
- transmitting a delta message that indicates a frequency difference between a data tone frequency for the reader device and a helper tone frequency;
- and
- transmitting a data tone signal at the data tone frequency and a helper tone signal at the helper tone frequency, wherein the helper tone signal is a waveform shared among multiple reader devices.
A method of wireless communication performed by an ambient device, comprising:
- receiving a first delta message that indicates a first frequency difference between a first data tone frequency and a helper tone frequency;
- and
- receiving, from a first reader device, a first data tone signal at the first data tone frequency and a helper tone signal at the helper tone frequency, wherein the helper tone signal is a waveform that is shared among multiple reader devices.
Dependencies are inferred from the claim text.