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EP-4740030-A1 - PROCEDURES FOR WIDEBAND SENSING VIA SUCCESSIVE-IN-TIME NARROWBAND TRANSMISSIONS

EP4740030A1EP 4740030 A1EP4740030 A1EP 4740030A1EP-4740030-A1

Abstract

A method for wireless communication at a user equipment (UE) and related apparatus. In the method, the UE transmits a first sensing signal having a first duration and at a first frequency band and obtains a Doppler estimation of a target object based on a reflection of the first sensing signal. The UE then transmits a second sensing signal having a second duration shorter than the first duration and at a second frequency band different than the first frequency band and performs a successive-in-time sensing, based on the Doppler estimation and a combination of the first reflection of the first sensing signal and a second reflection of the second sensing signal to obtain sensing information for the target object.

Inventors

  • STEFANATOS, Stelios
  • WU, SHIJUN
  • GUBESKYS, Arthur

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260513
Application Date
20240513

Claims (20)

  1. 1. An apparatus of wireless communication at a user equipment (UE), comprising: at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to: transmit a first sensing signal having a first duration and at a first frequency band; obtain a Doppler estimation of a target object based on a first reflection of the first sensing signal; transmit a second sensing signal having a second duration shorter than the first duration and at a second frequency band different than the first frequency band; and perform a successive-in-time sensing based on the Doppler estimation and a combination of the first reflection of the first sensing signal and a second reflection of the second sensing signal to obtain sensing information for the target object.
  2. 2. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein, to transmit the first sensing signal, the at least one processor, individually or in any combination, is configured to transmit the first sensing signal via the transceiver, and wherein the Doppler estimation of the target object includes an estimated velocity of the target object relative to the UE.
  3. 3. The apparatus of claim 1, wherein, to perform the successive-in-time sensing on the target object, the at least one processor, individually or in any combination, is configured to: apply a phase compensation to the first sensing signal and the second sensing signal based on the Doppler estimation to obtain phase-compensated signals; coherently combine the phase-compensated signals to obtain a wideband information having a duration of the second duration; and obtain the sensing information for the target object based on the wideband information.
  4. 4. The apparatus of claim 3, wherein the sensing information of the target object comprises one or more of: a distance of the target object from the UE, an estimated velocity of the target object relative to the UE, or an angular position of the target object relative to the UE.
  5. 5. The apparatus of claim 3, wherein the wideband information is based on a wide frequency band encompassing the first frequency band and the second frequency band.
  6. 6. The apparatus of claim 3, wherein the first duration is a first number of symbols, the second duration is a second number of symbols, and wherein the first number of symbols is based on a coherent processing interval (CPI) associated with a velocity resolution for the target object, and the second number of symbols is based on an integration gain for the sensing information of the target object.
  7. 7. The apparatus of claim 6, wherein the at least one processor, individually or in any combination, is further configured to: transmit, to a network entity, a resource request for sensing the target object, wherein the resource request includes the CPI and a number of symbols for sensing the target object, wherein the CPI is indicated in a unit of symbols.
  8. 8. The apparatus of claim 7, wherein the at least one processor, individually or in any combination, is further configured to, prior to being configured to transmit the resource request: transmit, to the network entity, a feasibility indicator indicating a feasibility of performing the successive-in-time sensing on the target object, wherein the feasibility is based on an estimated total sensing time of the target object.
  9. 9. The apparatus of claim 7, wherein the first sensing signal is transmitted periodically based on a periodicity, and wherein the at least one processor, individually or in any combination, is further configured to: receive a configuration of the periodicity via a Radio Resource Control (RRC) message or downlink control information (DCI).
  10. 10. The apparatus of claim 9, wherein the at least one processor, individually or in any combination, is further configured to: indicate, to the network entity, via an RRC message or Uplink Control Information (UCI), one or more of: the periodicity, the CPI, or the first number of symbols.
  11. 11. The apparatus of claim 9, wherein one or more of the periodicity, the CPI, or the first number of symbols is preconfigured.
  12. 12. The apparatus of claim 9, wherein the at least one processor, individually or in any combination, is further configured to: transmit a request for using the second sensing signal, wherein the request for using the second sensing signal further indicates one or more of: the second duration for the second sensing signal, or a maximum time gap between the first sensing signal and the second sensing signal.
  13. 13. The apparatus of claim 12, wherein the request for transmitting the second sensing signal is based on an estimated velocity of the target object based on the first sensing signal.
  14. 14. The apparatus of claim 9, wherein the second sensing signal is transmitted periodically, and wherein the at least one processor, individually or in any combination, is further configured to: request, via an RRC message or Uplink Control Information (UCI), an allocation of second resources periodically.
  15. 15. The apparatus of claim 14, wherein the at least one processor, individually or in any combination, is further configured to: terminate, in response to a termination timer expired, the allocation of the second resources.
  16. 16. The apparatus of claim 14, wherein the at least one processor, individually or in any combination, is further configured to: indicate, to the network entity, via an RRC message or the UCI, a termination request for terminating the allocation of the second resources to cause the network entity to terminate the allocation of the second resources.
  17. 17. The apparatus of claim 7, wherein the at least one processor, individually or in any combination, is further configured to: transmit, to the network entity, a capability indicator for maintaining phase coherence for the successive-in-time sensing on the target object, wherein the capability indicator includes one or more of: a minimum time gap between the first sensing signal and the second sensing signal, or a maximum gap between the first frequency band and the second frequency band.
  18. 18. The apparatus of claim 7, wherein the first sensing signal is transmitted over a first component carrier (CC), and the second sensing signal is transmitted over a second CC different from the first CC.
  19. 19. An apparatus of wireless communication at a network entity, comprising: at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to: receive, from a user equipment (UE), a resource request for a successive- in-time sensing on a target object to obtain sensing information of the target object; allocate, for the UE, first resource for a first sensing signal, the first sensing signal having a first duration and at a first frequency band; and allocate, for the UE, second resource for a second sensing signal in combination with the first sensing signal, the second sensing signal having a second duration shorter than the first duration and at a second frequency band different than the first frequency band.
  20. 20. The apparatus of claim 19, further comprising a transceiver coupled to the at least one processor, wherein, to receive the resource request, the at least one processor, individually or in any combination, is configured to receive the resource request via the transceiver, and wherein the sensing information of the target object comprises one or more of: a distance of the target object from the UE, an estimated velocity of the target object relative to the UE, or an angular position of the target object relative to the UE.

Description

PROCEDURES FOR WIDEBAND SENSING VIA SUCCESSIVE-IN-TIME NARROWBAND TRANSMISSIONS CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of Greek Patent Application Serial No. 20230100538, entitled “PROCEDURES FOR WIDEBAND SENSING VIA SUCCESSIVE-IN-TIME NARROWBAND TRANSMISSIONS” and filed on July 3, 2023, which is expressly incorporated by reference herein in its entirety. TECHNICAL FIELD [0002] The present disclosure relates generally to communication systems, and more particularly, to procedures for wideband sensing via successive-in-time narrowband transmissions in wireless communication. INTRODUCTION [0003] 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. 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, and time division synchronous code division multiple access (TD-SCDMA) systems. [0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3 GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. BRIEF SUMMARY [0005] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. [0006] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a user equipment (UE). The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, may be configured to transmit a first sensing signal having a first duration and at a first frequency band; obtain a Doppler estimation of a target object based on a reflection of the first sensing signal; transmit a second sensing signal having a second duration shorter than the first duration and at a second frequency band different than the first frequency band; and perform a successive-in-time sensing, based on the Doppler estimation and a combination of the first reflection of the first sensing signal and a second reflection of the second sensing signal to obtain sensing information for the target object. [0007] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a network entity. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, may be configured to receive, from a UE, a resource request for a successive-in-time sensing on a target object to obtain sensing information of the target object; allocate, for the UE, first resource for a first sensing signal, the first sensing signal having a first duration and at a first frequency band; and allocate, for the UE, second resource for a second sensing signal in combination with the first sensing signal, the second sensing signal having a second duration shorter than the first duration and at a second frequency band different than the first frequency band. [0008] To the accomplishment of the foregoing and related ends, the one or m