US-12628137-B2 - Dedicated slots for ambient devices

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a reader device may select one or more dedicated slots for communications with ambient devices. The reader device may transmit a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots. Numerous other aspects are described.

Inventors

• Zhifei Fan
• Piyush Gupta
• Jing Sun

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260512

Application Date

20230515

Claims (20)

1. 1 . 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: select one or more dedicated slots for communications with ambient devices; and transmit a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots.
2. 2 . The reader device of claim 1 , wherein the one or more processors are configured to transmit an indication of the one or more dedicated slots.
3. 3 . The reader device of claim 2 , wherein the indication indicates a slot, among the one or more dedicated slots, that is dedicated for broadcast signals to ambient devices.
4. 4 . The reader device of claim 1 , wherein the one or more processors are configured to transmit a broadcast signal in a slot, among the one or more dedicated slots, that is dedicated for broadcast signals to ambient devices.
5. 5 . The reader device of claim 4 , wherein the slot is shared with neighboring reader devices for broadcast signals.
6. 6 . The reader device of claim 1 , wherein the one or more processors are configured to transmit a broadcast signal at a broadcast frequency that is dedicated for broadcast signals.
7. 7 . The reader device of claim 6 , wherein the one or more processors are configured to select the broadcast frequency such that a frequency difference between a data tone frequency for the reader device and the broadcast frequency does not overlap with a frequency difference between the helper tone frequency and the broadcast frequency, a frequency difference between a data tone frequency of a neighboring reader device and the helper tone frequency, or a frequency difference between the data tone frequency of the reader device and the data tone frequency of the neighboring reader device.
8. 8 . The reader device of claim 1 , wherein the one or more processors are configured to transmit ultra-reliable low latency communications in a slot among the one or more dedicated slots.
9. 9 . The reader device of claim 1 , wherein the one or more processors are configured to refrain from transmitting enhanced mobile broadband communications in a slot of the one or more dedicated slots.
10. 10 . 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 an indication of one or more dedicated slots that are slots dedicated for communications with ambient devices; and receive a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots.
11. 11 . The ambient device of claim 10 , wherein the one or more processors, to receive the indication, are configured to: receive a synchronization signal; transmit a physical random access channel message based at least in part on the synchronization signal; and receive a configuration for the one or more dedicated slots.
12. 12 . The ambient device of claim 10 , wherein the indication indicates a slot, among the one or more dedicated slots, that is dedicated for broadcast signals to ambient devices.
13. 13 . The ambient device of claim 10 , wherein the one or more processors are further configured to receive a broadcast signal in a slot, among the one or more dedicated slots, that is dedicated for broadcast signals to ambient devices.
14. 14 . The ambient device of claim 10 , wherein the one or more processors are further configured to receive ultra-reliable low latency communications in a slot among the one or more dedicated slots.
15. 15 . A method of wireless communication performed by a reader device, comprising: selecting one or more dedicated slots for communications with ambient devices; and transmitting a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots.
16. 16 . The method of claim 15 , further comprising transmitting an indication of the one or more dedicated slots.
17. 17 . The method of claim 16 , wherein the indication indicates a slot, among the one or more dedicated slots, that is dedicated for broadcast signals to ambient devices.
18. 18 . The method of claim 15 , further comprising transmitting a broadcast signal in a slot, among the one or more dedicated slots, that is dedicated for broadcast signals to ambient devices.
19. 19 . The method of claim 18 , wherein the slot is shared with neighboring reader devices for broadcast signals.
20. 20 . The method of claim 15 , further comprising transmitting a broadcast signal at a broadcast frequency that is dedicated for broadcast signals.

Description

FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for using dedicated slots for ambient devices. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the network node to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples). The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY Some aspects described herein relate to a method of wireless communication performed by a reader device. The method may include selecting one or more dedicated slots for communications with ambient devices. The method may include transmitting a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots. Some aspects described herein relate to a method of wireless communication performed by an ambient device. The method may include receiving an indication of one or more dedicated slots that are slots dedicated for communications with ambient devices. The method may include receiving a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots. Some aspects described herein relate to a reader device for wireless communication. The reader device may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to select one or more dedicated slots for communications with ambient devices. The one or more processors may be configured to transmit a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots. Some aspects described herein relate to an ambient device for wireless communication. The ambient device may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to receive an indication of one or more dedicated slots that are slots dedicated for communications with ambient devices. The one or more processors may be configured to receive a helper tone signal and a data tone signal in slots that are among the one or more dedicated slots. Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a reader device. The set of instructions, when executed by one or more processors of the reader device, may cause the reader device to select one or more ded