WO2024197261A1

WO2024197261A1 - Cancellation mechanism for two-stage sensing

Info

Publication number: WO2024197261A1
Application number: PCT/US2024/021170
Authority: WO
Inventors: Shijun Wu; Preeti Kumari; Stelios STEFANATOS; Kapil Gulati; Junyi Li
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2023-03-23
Filing date: 2024-03-22
Publication date: 2024-09-26
Anticipated expiration: 2025-09-23
Also published as: CN121079927A

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive first control signaling allocating first and second sets of resources for transmission of first and second sets of sensing reference signals. The UE may transmit the first set of sensing reference signals in the first set of resources and may detect a target based on reflections of the first set of sensing reference signals. The UE may transmit an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. The UE may transmit the second set of sensing reference signals in the first subset of resources of the second set of resources.

Description

CANCELLATION MECHANISM FOR TWO-STAGE SENSING

CROSS REFERENCE

[0001] The present Application for Patent claims priority to Greek Patent Application No. 20230100241 by WU et al., entitled “CANCELLATION MECHANISM FOR TWO-STAGE SENSING,” filed March 23, 2023, assigned to the assignee hereof, and expressly incorporated by reference in its entirety herein.

FIELD OF TECHNOLOGY

[0002] The following relates to wireless communications, including cancellation mechanism for two-stage sensing.

BACKGROUND

[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE- Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE).

[0004] In some wireless communications systems, a wireless device may transmit sensing reference signals. However, such approaches may be improved. SUMMARY

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support cancellation mechanism for two-stage sensing. A user equipment (UE) may receive first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals. The first set of resources and the second set of resources may be periodic resources. The UE may transmit the first set of sensing reference signals in the first set of resources. The UE may transmit, based at least in part on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. The UE may transmit, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0006] A method for wireless communication at a user equipment (UE) is described. The method may include receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, transmitting the first set of sensing reference signals in the first set of resources, transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, and transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0007] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, transmit the first set of sensing reference signals in the first set of resources, detect one or more targets based on one or more reflections of the first set of sensing reference signals received at the UE, transmit, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, and transmit, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0008] Another apparatus for wireless communication at a UE is described. The apparatus may include means for receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, means for transmitting the first set of sensing reference signals in the first set of resources, means for transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, and means for transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0009] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to receive first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, transmit the first set of sensing reference signals in the first set of resources, detect one or more targets based on one or more reflections of the first set of sensing reference signals received at the UE, transmit, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, and transmit, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0010] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, transmitting the indication of the first subset of resources may include operations, features, means, or instructions for transmitting a cancellation request indicating one or more resources of the second set of resources that may be requested to be cancelled.

[0011] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the cancellation request includes a bitmap indicating one or more resources of the second set of resources that may be requested to be cancelled.

[0012] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the cancellation request includes a value indicating a quantity of resources that may be requested to be cancelled in each period of the second set of resources.

[0013] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for transmitting the cancellation request via uplink control signaling.

[0014] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, transmitting the indication of the first subset of resources may include operations, features, means, or instructions for transmitting an activation request indicating that the first subset of resources may be requested to remain allocated. [0015] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for determining a quantity of resources of the first subset of resources based on a quantity of the one or more targets detected as a result of transmitting the first set of sensing reference signals, one or more locations of the one or more targets, or both.

[0016] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for transmitting the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0017] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for transmitting the indication of the first subset of resources in accordance with a first periodicity that may be a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

[0018] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for receiving the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources and where the indication of the first subset of resources may be transmitted in the third set of resources.

[0019] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for receiving second control signaling including a confirmation of the indication of the first subset of resources.

[0020] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, one or more communication parameters associated with the first set of sensing reference signals may be different than one or more communication parameters associated with the second set of sensing reference signals.

[0021] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the second set of sensing reference signals may be associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals.

[0022] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters including one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof and the first set of sensing reference signals, the second set of sensing reference signals, or both, may be transmitted in accordance with the one or more sensing parameters.

[0023] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the first control signaling may be radio resource control signaling.

[0024] A method for wireless communication at a network entity is described. The method may include transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE, and canceling, based on receiving the indication of the first subset of resources, the allocation of one or more resources of the second set of resources that are different than the first subset of resources. [0025] An apparatus for wireless communication at a network entity is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, receive, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE, and canceling, base at least in part on receiving the indication of the first subset of resources, the allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0026] Another apparatus for wireless communication at a network entity is described. The apparatus may include means for transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, means for receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE, and means for canceling, based on receiving the indication of the first subset of resources, the allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0027] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to transmit first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources, receive, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE, and canceling, base at least in part on receiving the indication of the first subset of resources, the allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0028] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for transmitting, to a second UE, second control signaling assigning at least a portion of the one or more resources of the second set of resources to the second UE.

[0029] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, receiving the indication of the first subset of resources may include operations, features, means, or instructions for receiving a cancellation request indicating one or more resources of the second set of resources that may be requested to be cancelled.

[0030] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the cancellation request includes a bitmap indicating one or more resources of the second set of resources that may be requested to be cancelled.

[0031] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the cancellation request includes a value indicating a quantity of resources that may be requested to be cancelled in each period of the second set of resources.

[0032] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for receiving the cancellation request via uplink control signaling. [0033] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, receiving the indication of first subset of resources may include operations, features, means, or instructions for receiving an activation request indicating the first subset of resources that may be requested to remain allocated.

[0034] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for receiving the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0035] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for receiving the indication of the first subset of resources in accordance with a first periodicity that may be a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

[0036] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for transmitting the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources and where the indication of the first subset of resources may be received in the third set of resources.

[0037] Some examples of the method, apparatuses, and non-transitory computer- readable medium described herein may further include operations, features, means, or instructions for transmitting second control signaling including a confirmation of the indication of the first subset of resources.

[0038] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, one or more communication parameters associated with the first set of sensing reference signals may be different than one or more communication parameters associated with the second set of sensing reference signals.

[0039] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the second set of sensing reference signals may be associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals.".

[0040] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters including one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof and the first set of sensing reference signals, the second set of sensing reference signals, or both, may be transmitted in accordance with the one or more sensing parameters.

[0041] In some examples of the method, apparatuses, and non-transitory computer- readable medium described herein, the first control signaling may be radio resource control signaling.

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG. 1 shows an example of a wireless communications system that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0043] FIG. 2 shows an example of a wireless communications system that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0044] FIG. 3 shows an example of a resource allocation that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0045] FIG. 4 shows an example of a process flow that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. [0046] FIG. 5 shows an example of a process flow that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0047] FIGs. 6 and 7 show block diagrams of devices that support cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0048] FIG. 8 shows a block diagram of a communications manager that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0049] FIG. 9 shows a diagram of a system including a device that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0050] FIGs. 10 and 11 show block diagrams of devices that support cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0051] FIG. 12 shows a block diagram of a communications manager that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0052] FIG. 13 shows a diagram of a system including a device that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0053] FIGs. 14 and 15 show flowcharts illustrating methods that support cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

DETAILED DESCRIPTION

[0054] In wireless communications, a user equipment (UE) may transmit one or more sensing signals to detect objects in the environment around the UE. For example, in a monostatic approach, the UE may transmit sensing reference signals and monitor for reflections or echoes of the sensing reference signals to detect the objects in the environment. In some examples, the UE may perform a two stage sensing procedure that includes a first scanning stage (e.g., for initially identifying the presence of possible targets, optionally using a smaller bandwidth, shorter duration, a wider beam, or any combination thereof) and a second tracking stage (e.g., for more precisely tracking the targets, optionally using a larger bandwidth, longer duration, a narrower beam, or any combination thereof). In some approaches, a UE may transmit a first set of sensing transmissions in the first stage using allocated resources and may request additional resources to more precisely track the objects in the second stage. However, such approaches may be improved.

[0055] A UE may receive control signaling (e.g., RRC signaling from a network entity) that may allocate two sets of resources, one set of resources each for the two stages of the sensing procedure in which a first set of sensing transmissions and a second set of sensing transmissions will be transmitted, respectively. The UE may use the first set of resources to identify targets in the environment. The UE may then determine which resources of the second set of resources it will use to perform the second stage of the sensing procedure (e.g., a subset of the second set of resources) and may transmit an indication of those determined resources to the network entity that allocated the resources. Such an indication may be a cancellation request (e.g., that indicates the unused resources of the second set of resources) or an activation request (e.g., that indicates the subset of the second set of resources). The UE may then transmit the second set of sensing transmissions using the subset of the second set of resources to further sense or track the targets in the environment.

[0056] In this way, latency and signaling overhead may be reduced as compared to other approaches and sensing quality may be improved. Further, overall resource utilization of the wireless communications system may be improved, as canceled resources may be reallocated to other devices or for other purposes (e.g., data communications).

[0057] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are then described with reference to a wireless communications system, a resource allocation, and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to cancellation mechanism for two-stage sensing.

[0058] FIG. 1 shows an example of a wireless communications system 100 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The wireless communications system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE- Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0059] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link). For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs).

[0060] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.

[0061] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.

[0062] In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an SI, N2, N3, or other interface protocol). In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130). In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol), or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link), one or more wireless links (e.g., a radio link, a wireless optical link), among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155. [0063] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB), a 5G NB, a next-generation eNB (ng-eNB), a Home NodeB, a Home eNodeB, or other suitable terminology). In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0064] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture), which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC), a Non-Real Time RIC (Non-RT RIC)), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmission reception point (TRP). One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU), a virtual DU (VDU), a virtual RU (VRU)).

[0065] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality and signaling (e.g., Radio Resource Control (RRC), service data adaption protocol (SDAP), Packet Data Convergence Protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (LI) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more RUs 170). In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170). A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., Fl, Fl-c, Fl-u), and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.

[0066] In wireless communications systems (e.g., wireless communications system 100), infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140). The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT)). In some examples, the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream). In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.

[0067] For instance, an access network (AN) or RAN may include communications between access nodes (e.g., an IAB donor), IAB nodes 104, and one or more UEs 115. The IAB donor may facilitate connection between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, an IAB donor may refer to a RAN node with a wired or wireless connection to core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). IAB donor and IAB nodes 104 may communicate via an Fl interface according to a protocol that defines signaling messages (e.g., an Fl AP protocol). Additionally, or alternatively, the CU 160 may communicate with the core network via an interface, which may be an example of a portion of backhaul link, and may communicate with other CUs 160 (e.g., a CU 160 associated with an alternative IAB donor) via an Xn-C interface, which may be an example of a portion of a backhaul link.

[0068] An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UEs 115, wireless self-backhauling capabilities). A DU 165 may act as a distributed scheduling node towards child nodes associated with the IAB node 104, and the IAB-MT may act as a scheduled node towards parent nodes associated with the IAB node 104. That is, an IAB donor may be referred to as a parent node in communication with one or more child nodes (e.g., an IAB donor may relay transmissions for UEs through one or more other IAB nodes 104). Additionally, or alternatively, an IAB node 104 may also be referred to as a parent node or a child node to other IAB nodes 104, depending on the relay chain or configuration of the AN. Therefore, the IAB-MT entity of IAB nodes 104 may provide a Uu interface for a child IAB node 104 to receive signaling from a parent IAB node 104, and the DU interface (e.g., DUs 165) may provide a Uu interface for a parent IAB node 104 to signal to a child IAB node 104 or UE 115.

[0069] For example, IAB node 104 may be referred to as a parent node that supports communications for a child IAB node, or referred to as a child IAB node associated with an IAB donor, or both. The IAB donor may include a CU 160 with a wired or wireless connection (e.g., a backhaul communication link 120) to the core network 130 and may act as parent node to IAB nodes 104. For example, the DU 165 of IAB donor may relay transmissions to UEs 115 through IAB nodes 104, or may directly signal transmissions to a UE 115, or both. The CU 160 of IAB donor may signal communication link establishment via an Fl interface to IAB nodes 104, and the IAB nodes 104 may schedule transmissions (e.g., transmissions to the UEs 115 relayed from the IAB donor) through the DUs 165. That is, data may be relayed to and from IAB nodes 104 via signaling via an NR Uu interface to MT of the IAB node 104.

Communications with IAB node 104 may be scheduled by a DU 165 of IAB donor and communications with IAB node 104 may be scheduled by DU 165 of IAB node 104.

[0070] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support cancellation mechanism for two-stage sensing as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180). [0071] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (loT) device, an Internet of Everything (loE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.

[0072] The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.

[0073] The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP)) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub- entity) of a network entity 105. For example, the terms “transmitting,” “receiving,” or “communicating,” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0074] In some examples, such as in a carrier aggregation configuration, a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN)) and may be identified according to a channel raster for discovery by the UEs 115. A carrier may be operated in a standalone mode, in which case initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non- standalone mode, in which case a connection is anchored using a different carrier (e.g., of the same or a different radio access technology).

[0075] The communication links 125 shown in the wireless communications system 100 may include downlink transmissions (e.g., forward link transmissions) from a network entity 105 to a UE 115, uplink transmissions (e.g., return link transmissions) from a UE 115 to a network entity 105, or both, among other configurations of transmissions. Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode).

[0076] A carrier may be associated with a particular bandwidth of the RF spectrum and, in some examples, the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100. For example, the carrier bandwidth may be one of a set of bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of the wireless communications system 100 (e.g., the network entities 105, the UEs 115, or both) may have hardware configurations that support communications using a particular carrier bandwidth or may be configurable to support communications using one of a set of carrier bandwidths. In some examples, the wireless communications system 100 may include network entities 105 or UEs 115 that support concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured for operating using portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.

[0077] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam), and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.

[0078] One or more numerologies for a carrier may be supported, and a numerology may include a subcarrier spacing (A ) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.

[0079] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of T_s = l/(A/_mflx ■ Ay) seconds, for which f_max may represent a supported subcarrier spacing, and Ay may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023). [0080] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Ay) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.

[0081] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0082] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.

[0083] A network entity 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with a network entity 105 (e.g., using a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or others). In some examples, a cell also may refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) over which the logical communication entity operates. Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the network entity 105. For example, a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with coverage areas 110, among other examples.

[0084] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a lower-powered network entity 105 (e.g., a lower-powered base station 140), as compared with a macro cell, and a small cell may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG), the UEs 115 associated with users in a home or office). A network entity 105 may support one or multiple cells and may also support communications via the one or more cells using one or multiple component carriers.

[0085] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband loT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access for different types of devices. [0086] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0087] The wireless communications system 100 may support synchronous or asynchronous operation. For synchronous operation, network entities 105 (e.g., base stations 140) may have similar frame timings, and transmissions from different network entities 105 may be approximately aligned in time. For asynchronous operation, network entities 105 may have different frame timings, and transmissions from different network entities 105 may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations.

[0088] Some UEs 115, such as MTC or loT devices, may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication). M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a network entity 105 (e.g., a base station 140) without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that uses the information or presents the information to humans interacting with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging. [0089] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception concurrently). In some examples, half-duplex communications may be performed at a reduced peak rate. Other power conservation techniques for the UEs 115 include entering a power saving deep sleep mode when not engaging in active communications, operating using a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs)) within a carrier, within a guard-band of a carrier, or outside of a carrier.

[0090] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC). The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0091] In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170), which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1 :M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.

[0092] In some systems, a D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115). In some examples, vehicles may communicate using vehicle-to- everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., network entities 105, base stations 140, RUs 170) using vehicle-to- network (V2N) communications, or with both.

[0093] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC), which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or a Packet-Switched Streaming Service. [0094] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

[0095] The wireless communications system 100 may also operate using a super high frequency (SHF) region, which may be in the range of 3 GHz to 30 GHz, also known as the centimeter band, or using an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band. In some examples, the wireless communications system 100 may support millimeter wave (mmW) communications between the UEs 115 and the network entities 105 (e.g., base stations 140, RUs 170), and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, such techniques may facilitate using antenna arrays within a device. The propagation of EHF transmissions, however, may be subject to even greater attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.

[0096] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA). Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0097] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.

[0098] The network entities 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), for which multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO), for which multiple spatial layers are transmitted to multiple devices. [0099] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation).

[0100] A network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network entity 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network entity 105 multiple times along different directions. For example, the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.

[0101] Some signals, such as data signals associated with a particular receiving device, may be transmitted by transmitting device (e.g., a transmitting network entity 105, a transmitting UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as a receiving network entity 105 or a receiving UE 115). In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.

[0102] In some examples, transmissions by a device (e.g., by a network entity 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115). The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI- RS)), which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170), a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device).

[0103] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a receiving device (e.g., a network entity 105), such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to- noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0104] The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP -based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.

[0105] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly via a communication link (e.g., a communication link 125, a D2D communication link 135). HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval. [0106] A network entity may allocate two sets of sensing reference signal resources (e.g., periodic resources), including a first set of resources that are used for a scanning stage of sensing reference signal transmissions and a second set of resources that are to be used for tracking stage sensing reference signal transmissions. The two sets of sensing reference signal resources may be allocated in semi-static or semi-persistent manner. After transmitting first stage sensing reference signals in the first set of sensing reference signal resources, the UE may determine a first subset of resources in the second set of resources. The first subset of resources may be the resources that the UE will use to transmit second stage sensing reference signals. The UE may report the first subset of resources (or, alternatively, remaining resources after excluding the first subset of resources in the second set of resources) to the network entity. These resources may be those resources to be activated (or, alternatively, the remaining resources that are to be canceled) for second stage sensing reference signal transmissions. The UE may then transmit the second stage sensing reference signals in the first subset of resources and the remaining resources in the second set of resources may be recycled and allocated by the network entity for use by other devices (e.g., other UEs).

[0107] FIG. 2 shows an example of a wireless communications system 200 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein.

[0108] In some examples, both communication and sensing may be performed. In such a joint sensing and communication system, a vehicle’s communication system (e.g., the UE 115-a) transmits the sensing reference signals 215 to detect objects around the vehicle by detecting its echo in a monostatic operation. In some examples, the UE 115-a may transmit a sensing reference signal 215 in a band that may also be used for cellular communication (e.g., a mmWave band). In some examples, the UE 115-a may transmit the sensing reference signals 215 in resources of a cellular system (e.g., in resources allocated by the network entity 105-a), such as uplink resources.

[0109] In some examples, a sensing reference signal may be configured in various ways (e.g., to satisfy one or more sensing requirements). For example, the UE 115-a may employ the same waveform being used for communications (e.g., between the UE 115-a and the network entity 105-a) in the communication system (e.g., a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform) or it may employ a different waveform for the sensing reference signals 215.

[0110] In some examples, a sensing reference signal 215 overhead may depend on one or more sensing service considerations. For example, transmission bandwidth, duration, or both of the sensing reference signals 215 may be modified to accommodate desired range and velocity resolutions. Further, in some examples, beam sweeping may be used to achieve a desired angular resolution for the sensing procedure.

[OHl] However, for applications with high range/velocity/angular resolution aspects, resource overhead may be problematic to the cellular system. Therefore, in some examples, the UE 115-a may employ two-stage sensing to reduce overhead associated with transmission of the sensing reference signals 215. In an example first stage or scanning stage, one or more sensing reference signals 215 may be transmitted using a smaller bandwidth, a shorter duration, a wider beam, or any combination thereof, to identify the presence of potential targets 245 in the environment. In an example second stage or tracking stage, the UE 115-a may transmit one or more sensing reference signals 215 with a larger bandwidth, a shorter duration, narrower beams, or any combination thereof to detect or track one or more targets 245. Such a second stage or tracking stage may not use all available beams, thereby reducing sensing overhead.

[0112] In some examples, sensing reference signals 215 for scanning (e.g., a first stage of sensing) and tracking (e.g., a second stage of sensing) may be different. For example, they may have different bandwidth, duration, beam-sweeping pattern, or any combination thereof. Further, transmission behavior of the UE 115-a may be different for scanning and tracking stages of a sensing operation. For example, the UE 115-a may transmit scanning stage sensing reference signals 215 in a periodic manner, in all beam directions (or in a greater quantity of directions as compared to the tracking stage) of a desired field of view. For example, the first set of resources 225 may cover a set of directions that may be larger than the second set of resources 230.

[0113] In some examples, the UE 115-a may transmit tracking stage sensing reference signals 215 if targets have been identified in the scanning stage. For example, if the UE 115-a detects the targets 245 during the scanning stage using the first set of resources 225 (which may include time resources, frequency resources, spatial resources, such as beams, or any combination thereof) the UE 115-a may transmit tracking stage sensing reference signals 215 in one or more directions in which the targets 245 have been identified. For example, the UE 115-a may transmit the tracking stage sensing reference signals 215 using the first subset of resources 235 which may include one or more spatial resources (e.g., beams) oriented in the one or more directions in which the targets 245 were identified.

[0114] In some approaches, scanning stage resources may be semi-statically or semi-persistently allocated by the network for a device to perform sensing operations. In response to detecting targets, the device may request one or more resources for the tracking stage sensing reference signal transmissions. In turn, the network may then allocate resources for the tracking stage sensing reference signal transmissions.

[0115] However, such approaches may include large amounts of latency and signaling overhead, as these approaches involve frequent interactions between the device and the network for resource allocation for sensing reference signal 215 transmission.

[0116] As such, to offer reduced latency and overhead while maintaining integrity of sensing operations, the network entity 105-a may allocate two sets of periodic sensing reference signal resources, including a first set of resources 225 that are used for a scanning stage of sensing reference signal transmissions and a second set of resources 230 that are to be used for tracking stage sensing reference signal transmissions. The two sets of sensing reference signal resources may be allocated in semi-static or a semi- persistent manner. After transmitting first stage sensing reference signals 215 in the first set of resources 225, the UE 115-a may determine a first subset of resources 235 that are included in the second set of resources 230. The first subset of resources 235 may be the resources that the UE 115-a will use to transmit second stage sensing reference signals 215. The UE may report the first subset of resources (or, alternatively, the remaining resources after excluding first subset of resources in the second set of resources) to the network entity 105-a (e.g., by transmitting the indication of the first subset 240). These resources may be those resources to be activated (or, alternatively, the remaining resources that are to be canceled) for second stage sensing reference signal 215 transmissions. The UE 115-a may then transmit the second stage sensing reference signals 215 in the first subset of resources 235 and the remaining resources in the second set of resources 230 may be recycled and allocated by the network entity for use by other devices (e.g., other UEs).

[0117] It is noted that the first set of resources 225, the second set of resources 230, and the first subset of resources 235 may include time resources, frequency resources, spatial resources, or any combination thereof. FIG. 2 depicts example beams 250 that may correspond to or may be used in connection with time resources, frequency resources, or both. For example, the beams 250 corresponding to the first set of resources 225 may be used in the sensing or first stage (e.g., to initially detect the target(s) 245) and the beams 250 corresponding to the second set of resources 230 or the first subset of resources 230 may be used in the tracking or second stage (e.g., to further refine or determine the location(s) of the target(s) 245). FIG. 3 depicts example time and frequency resources that may be allocated by the network entity 105-a for the sensing or first stage and the tracking or second stage.

[0118] In some examples, the network entity 105-a configures the first set of resources 225 and the second set of resources 230 using control signaling, such as the first control signaling 220, which may be RRC signaling. In some examples, the network entity 105-a transmits UE-specific control signaling (e.g., the first control signaling 220 that may be RRC signaling) that may indicate the first set of resources 225 for the first stage sensing reference signal 215 transmissions and the second set of resources 230 for second stage sensing reference signal 215 transmissions. The first set of resources 225 and the second set of resources 230 may be periodic resources, which may have the same or different periodicity.

[0119] For one or more sets of resources (e.g., the first set of resources 225, the second set of resources, 230, or both), the first control signaling 220 may indicate one or more of a sensing reference signal resource period, a sensing reference signal resource slot offset, a sensing reference signal bandwidth, a sensing reference signal comb number in frequency, a sensing reference signal comb offset, a duration of one sensing reference signal resource (or slot, symbol location, or both), a sensing reference signal symbol interval, a quantity of sensing reference signal resources per period for sensing reference signal beam sweeping (e.g., one resource may be for sensing reference signal transmission in one beam direction), or any combination thereof. [0120] In some examples, the configuration for the first set of resources 225 and the second set of resources 230 may be different. In some examples, the first set of resources 225 may be associated with the following parameters: a periodicity of 50ms, bandwidth of 65 resource blocks, a comb of 6, a sensing reference signal duration within period of 1ms (or, e.g., 8 slots for 120 kHz subcarrier spacing), a sensing reference signal symbol interval of 14 OFDM symbols, a quantity of sensing reference signal resources per period (e.g., a quantity of beams) of 3 (e.g., using wider beam for beam sweeping that uses fewer resources), or any combination thereof. In some examples, the second set of resources 230 may be associated with the following parameters: a periodicity of 50ms, bandwidth of 260 resource blocks, a comb of 2, a sensing reference signal duration within period of 5 ms (or, e.g., 40 slots for 120 kHz subcarrier spacing), a sensing reference signal symbol interval of 7 OFDM symbols, a quantity of sensing reference signal resources per period (e.g., a quantity of beams) of 9 (e.g., using a narrower beam for beam sweeping that may involve a greater quantity of resources), or any combination thereof.

[0121] In some examples, the UE 115-a senses for potential targets 245 based on first stage sensing reference signal 215 transmissions that are transmitted in the first set of resources 225. For example, the UE 115-a may monitor or scan for echoes or reflections of the first stage sensing reference signal transmissions to identify one or more potential targets 245 (e.g., in a monostatic sensing operation). In some cases, due to a smaller bandwidth, shorter duration, wider beams, or any combination thereof, sensing results in the first stage may not offer a desired resolution or accuracy of sensing. In such cases, the UE 115-a may perform the second stage of sensing using at least a subset of the second set of resources 230.

[0122] In some examples, the UE 115-a determines sensing reference signal resources to be used in the second stage sensing. For example, the UE 115-a may determine a quantity of sensing reference signal resources to be used for the second stage sensing, and may do so based on one or more sensing outcomes from the first stage sensing (e.g., based on a quantity of targets 245, relative direction of the targets 245, etc., that were detected in the first stage). In some examples, the bandwidth, duration, one or more other sensing parameters, or any combination thereof for each sensing reference signal resource in the second stage may not change. [0123] In another example, the UE 115-a may determine a quantity of sensing reference signal resources involved with for second stage sensing, but may also determine the bandwidth, duration, one or more other sensing parameters, or any combination thereof to be used for the second stage sensing, optionally based on one or more sensing outcomes from the first stage sensing (e.g., based on a quantity of targets 245, relative direction of the targets 245, target 245 relative speed, target 245, distance, one or more other sensing outcomes or results, or any combination thereof). In some examples, a velocity resolution goal may be relaxed for a farther target 245, thereby allowing a reduce sensing reference signal duration for sensing the target in the second stage.

[0124] For example, suppose that the UE 115-a transmits 3 sensing reference signals 215 (for sweeping beams 250 in 3 directions, such as the beams 250 associated with the first set of resources 225). In such an example, each beam may have a halfpower beam width of 12 degrees, and three beams may cover 36 degrees for vehicle front facing sensing) in first stage sensing. Further suppose that the UE 115-a has detected targets from its third sensing reference signal 215 transmission.

[0125] As a result, in the second stage sensing, the UE 115-a may transmit sensing reference signals 215 in the direction of the third sensing reference signal of first stage. In this example, the UE may employ three second stage sensing reference signal 215 resources to cover that direction. Thus, three sensing reference signal 215 resources are to be used for the second stage. This reduced set of sensing reference signal 215 resources of the second set of resources 230 may be the first subset of resources 235 that are indicated in the indication of the first subset 240.

[0126] In an alternative example, and as shown in FIG. 2, the multiple targets 245 may be detected, but some beams or directions associated with the second set of resources 230 may be used to continue sensing the targets 245 in the second stage. Again, this reduced set of sensing reference signal 215 resources of the second set of resources 230 may be the first subset of resources 235 that are indicated in the indication of the first subset 240.

[0127] In either case (as well as other examples) the remaining reference signal resources (e.g., time and frequency resources allocated by the network entity 105-a) can be canceled or reallocated for use by other devices. For example, the network entity 105-a may recycle and assign the unused resources to other UEs for communication or sensing.

[0128] In some examples, the UE 115-a may transmit the indication of the first subset 240 that may indicate one or more resources of the second set of resources 230 that are not included in the first subset of resources 235. In some examples, the UE 115-a may transmit the indication of the first subset 240, which may include or may be a cancellation request, to network entity 105-a. The cancellation request may indicate the resources of the second set of resources 230 that were not included in the first subset of resources 235 (e.g., those resources that may not correspond to locations, either past, present or future, of the targets 245) and that are to be canceled.

[0129] In some examples, the resources to be used for transmitting the cancellation request or the indication of the first subset 240 may be configured or allocated by the network entity 105-a. For example, in addition to configuring the sensing reference signal resources (e.g., the first set of resources 225, the second set of resources 230, or both), the network entity 105-a may also configure resources in which the UE 115-a may transmit the indication of the first subset 240 or the cancellation request. In some examples, the indication of the first subset 240 or the cancellation request may be carried via a PUCCH (e.g., using a new or modified PUCCH format).

[0130] In one example, the cancellation request may include at least a bitmap, with the size of the bitmap corresponding to a quantity of second stage sensing reference signal 215 resources (e.g., the second set of resources 230) per period (e.g., nine resources as shown in FIGs. 2 and 3). In some examples, a “1” in the bitmap may indicate the corresponding resources that are to be canceled. For example, if the first six resources in time are to be canceled, the bitmap may read “111111000”.

[0131] Additionally, or alternatively, the cancellation request may include at least a bitmap, with the size being the quantity of first stage sensing reference signal resources (e.g., the first set of resources 225) per period (e.g., three), with a value of “1” in the bitmap indicating the corresponding second stage resources (e.g., those resources of the second set of resources 230) that are to be canceled. For example, if the resources of the second set of resources 230 that are to be canceled correspond to the first set resources of the first set of resources 225, then the bitmap may read “110”. As such, there may exist or there may be established (e.g., by the UE 115-a or the network entity 105-a) a mapping between elements of the first set of resources 225 and elements of the second set of resources 230.

[0132] Additionally, or alternatively, the cancellation request may include at least an integer number that may indicate a quantity of sensing reference signal resources of the second set of resources 230 that are to be canceled per period. In some examples, the integer or quantity may be based on or established with respect to the first set of resources 225 or the second set of resources 230. In some examples the canceled resources may be earlier or later resources within period. For example, if three resources are to be used for the second stage, then the UE 115-a may transmit in the first 3 resources within a period and an integer value of 6 may be reported to the network entity 105-a by the UE 115-a.

[0133] Additionally, or alternatively, the UE 115-a may transmit an activation request to network entity 105-a. Such an activation request may indicate the resources that will be used (or that are requested) for second stage sensing reference signal transmission. For example, the indication of the first subset 240 may include or may be an activation request that may indicate the first subset of resources 235 that may indicate the resources to be used or requested to be used for transmitting the sensing reference signals 215 in the second or tracking stage.

[0134] Just as with the cancellation request, the activation request may include one or more bitmaps that may indicate resources that are to be used or activated. For example, the activation request may include at least a bitmap, with the size being the quantity of first stage sensing reference signal resources (e.g., the first set of resources 225) per period (e.g., three), with a value of “1” in the bitmap indicating the corresponding second stage resources (e.g., those resources of the second set of resources 230) that are to be activated or used for the second stage. For example, if the resources of the second set of resources 230 that are to be activated correspond to the first set resources of the first set of resources 225, then the bitmap may read “110”. As such, there may exist or there may be established (e.g., by the UE 115-a or the network entity 105-a) a mapping between elements of the first set of resources 225 and elements of the second set of resources 230. [0135] Additionally, or alternatively, the activation request may include at least an integer that may indicate a quantity of sensing reference signal resources of the second set of resources 230 that is to be activated or used for the second stage per period. In some examples, the integer or quantity may be based on or established with respect to the first set of resources 225 or the second set of resources 230. In some examples, the activated resources may be earlier or later resources within period. For example, if three resources are to be used for the second stage, then the UE 115-a may transmit in the first 6 resources within a period and an integer value of 6 may be reported to the network entity 105-a by the UE 115-a.

[0136] In some cases, it may be that no targets 245 are detected during the first stage (e.g., as a result of transmitting sensing reference signals 215 in the first set of resources 225). In such a case, all resources of the second set of resources 230 may be canceled. The UE 115-a may indicate this in the indication of the first subset 240. For example, the UE 115-a may include a cancellation request that indicates (e.g., using one or more techniques as described herein) that all of the resources of the second set of resources 230 are to be canceled. Additionally, or alternatively, the UE 115-a may include an activation request that indicates (e.g., using one or more techniques as described herein) that none of the resources of the second set of resources 230 are to be activated.

[0137] In some examples, the network entity 105-a may not transmit an acknowledgement or confirmation of the cancellation or activation to the UE 115-a. In such examples, the UE 115-a may transmit sensing reference signals 215 in the uncanceled or activated second stage sensing reference signal resources (e.g., the first subset of resources 235) after reporting cancellation (or activation) to the network entity 105-a. In some examples, an absence of cancellation (or activation) request may be treated as no cancellation (or that all second stage sensing reference signal resources are activated). In such a case, the network entity 105-a may not cancel, recycle, or reallocate any second stage sensing reference signal resources in the absence of a request from UE 115-a. In some examples, this may be due to the request not being receive or decoded at network entity 105-a. In some other examples, the UE 115-a may skip transmitting cancellation (or activation) request if no resources are being canceled (or if all resources are to be activated). [0138] However, in other examples, the network entity 105-a may transmit control signaling to the UE 115-a to confirm the cancellation or activation. Such control signaling may be carried in or may be DCI signaling.

[0139] In response to receiving the indication of the first subset 240 (e.g., optionally including a cancellation request or an activation request), the network entity 105-a may assign the canceled resources to other UEs for communication (e.g., UL data transmissions to the network entity 105-a) or sensing (e.g., other UEs’ sensing operations). Additionally, or alternatively, such canceled resources may be allocated to the UE 115-a for its own communications with the network entity 105-a.

[0140] FIG. 3 shows an example of a resource allocation 300 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. FIG. 3 depicts the first set of resources 320 associated with the sensing or first stage and the second set of resources 325 associated with the tracking or second stage, as well as the first subset of resources 345 that the UE 115-a may select for use for the tracking or second stage. The first subset of resources 345 may be indicated in an activation or cancellation request that may be transmitted in the resource indication 340. FIG. 3 further depicts details of a sensing reference signal resource 327 that indicates one or more configured resources elements 335 that have been allocated to the UE 115-a for transmission of the sensing reference signals 215. The more detailed resource allocation shown here is only one example of such allocation and other allocations may be used. Further, such allocations may be applied to the first set of resources 320, the second set of resources 325, or both.

[0141] In some examples, the cancellation request (or activation request) may be sent according to a periodicity of the sensing or first stage or according to a periodicity of the tracking or second stage. In one example, the first stage and second stage sensing reference signal transmissions may be done with the same periodicity. In such a case, the cancellation request (or activation request) may be sent for each sensing reference signal period 330 (e.g., in the resource indication 340). As such, the resource indication 340 for the UE 115-a to transmit the cancellation request (or activation request) has the same periodicity and such resources for transmitting may optionally be located (in time) between the first stage of sensing reference signal 215 transmissions and second stage sensing reference signal transmissions. [0142] In some examples, the first stage and second stage sensing reference signal may be associated with different periodicities. In such cases, the periodicity of the cancellation or activation request (and, subsequently the periodicity of the resource indication 340) may follow one of the different periodicities. For example, the periodicity of the cancellation or activation request (and, subsequently the periodicity of the resource indication 340) may follow the periodicity of the second stage sensing reference signal transmissions made in the second set of resources 325.

[0143] In some examples, the cancellation request may be transmitted every N sensing reference signal periods 330 of the first or second stage sensing reference signal 215 resources (e.g., the first set of resources 320, the second set of resources, 325, or both). In other words, the cancellation or activation request (and, subsequently the periodicity of the resource indication 340) may be sent less frequently than the sensing reference signal 215 in the first set of resources 320, the second set of resources 325, or both. In such cases, the cancellation or activation request may then be applicable to multiple sensing reference signal periods 330 (e.g., including the first set of resources 320, the second set of resources 325, or both). For example, if an indication periodicity is five times of that of the second set of resources 325, one resource indication may be applicable to the subsequent five periods of the second set of resources 325 (e.g., corresponding resources in the subsequent 5 periods are canceled or activated).

Similarly, the cancellation periodicity may be established with respect to multiples of the periodicity of the first set of resources 320, the second set of resources 325, or both (e.g., in cases in which the first set of resources 320 and the second set of resources 325 have different priorities.

[0144] FIG. 4 shows an example of a process flow 400 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The process flow 400 may implement various aspects of the present disclosure described herein. The elements described in the process flow 400 (e.g., the UE 115-b, the network entity 105-b, or both) may be examples of similarly-named elements described herein.

[0145] In the following description of the process flow 400, the operations between the various entities or elements may be performed in different orders or at different times. Some operations may also be left out of the process flow 400, or other operations may be added. Although the various entities or elements are shown performing the operations of the process flow 400, some aspects of some operations may also be performed by other entities or elements of the process flow 400 or by entities or elements that are not depicted in the process flow, or any combination thereof.

[0146] At 420, the UE 115-b may receive first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals. The first set of resources and the second set of resources may be periodic resources. In some examples, one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals. In some examples, the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals. In some examples, the first control signaling is radio resource control signaling.

[0147] In some examples, the first control signaling may indicate, for the first set of resources, the second set of resources, or both, one or more sensing parameters that may include one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof.

[0148] In some examples, the UE 115-b may receive the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources.

[0149] At 425, the UE 115-b may transmit the first set of sensing reference signals in the first set of resources. In some examples, the first set of sensing reference signals are transmitted in accordance with the one or more sensing parameters.

[0150] At 430, the UE 115-b may determine a quantity of resources of the first subset of resources based on a quantity of the one or more targets detected as a result of transmitting the first set of sensing reference signals, one or more locations of the one or more targets, or both.

[0151] At 435, the UE 115-b may, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, transmit an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. In some examples, the indication of the first subset of resources is transmitted in the third set of resources.

[0152] In some examples, transmitting the indication of the first subset of resources includes transmitting a cancellation request indicating one or more resources of the second set of resources that are requested to be canceled. In some examples, the cancellation request may include a bitmap indicating one or more resources of the second set of resources that are requested to be canceled. Additionally, or alternatively, the cancellation request may include a value indicating a quantity of resources that are requested to be canceled in each period of the second set of resources. In some examples, transmitting the indication of the first subset of resources includes transmitting the cancellation request via uplink control signaling.

[0153] In some examples, transmitting the indication of the first subset of resources may include transmitting an activation request indicating that the first subset of resources is requested to remain allocated. Additionally, or alternatively, transmitting the indication of the first subset of resources may include transmitting the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

[0154] In some examples, the UE 115-b may transmit the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0155] At 440, the UE 115-b may receive second control signaling that may include a confirmation of the indication of the first subset of resources. [0156] At 445, the UE 115-b may transmit, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources. In some examples, the second set of sensing reference signals may be transmitted in accordance with the one or more sensing parameters.

[0157] FIG. 5 shows an example of a process flow 500 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The process flow 500 may implement various aspects of the present disclosure described herein. The elements described in the process flow 500 (e.g., the network entity 105-c, the UE 115-c, the UE 115-d, or any combination thereof) may be examples of similarly-named elements described herein.

[0158] In the following description of the process flow 500, the operations between the various entities or elements may be performed in different orders or at different times. Some operations may also be left out of the process flow 500, or other operations may be added. Although the various entities or elements are shown performing the operations of the process flow 500, some aspects of some operations may also be performed by other entities or elements of the process flow 500 or by entities or elements that are not depicted in the process flow, or any combination thereof.

[0159] At 520, the network entity 105-c may transmit first control signaling allocating, to a user equipment (UE), a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals and the first set of resources and the second set of resources are periodic resources. In some examples, one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals. In some examples, the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signal.

[0160] In some examples, the first control signaling may indicate, for the first set of resources, the second set of resources, or both, one or more sensing parameters that may include one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof; and

[0161] In some examples, the network entity 105-c may transmit the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources.

[0162] In some examples, the first set of sensing reference signals, the second set of sensing reference signals, or both, are transmitted in accordance with the one or more sensing parameters.

[0163] In some examples, the first control signaling is radio resource control signaling.

[0164] At 525, the network entity 105-c may receive, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals and the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE.

[0165] In some examples, receiving the indication of the first subset of resources may include receiving the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources. In some examples, receiving the indication of the first subset of resources may include receiving the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources. In some examples, the indication of the first subset of resources is received in the third set of resources.

[0166] In some examples, receiving the indication of the first subset of resources may include receiving a cancellation request indicating one or more resources of the second set of resources that are requested to be canceled. In some examples, the cancellation request may include a bitmap indicating one or more resources of the second set of resources that are requested to be canceled. In some examples, the cancellation request may include a value indicating a quantity of resources that are requested to be canceled in each period of the second set of resources. In some examples, the network entity 105-c may receive the cancellation request via uplink control signaling.

[0167] In some examples, receiving the indication of the first subset of resources may include receiving an activation request indicating the first subset of resources that is requested to remain allocated.

[0168] At 530, the network entity 105-c may cancel, based on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0169] At 535, the network entity 105-c may transmit, to a second UE, second control signaling assigning at least a portion of the one or more resources of the second set of resources to the second UE.

[0170] Additionally, or alternatively, the network entity 105-c may transmit second control signaling that may include a confirmation of the indication of the first subset of resources.

[0171] FIG. 6 shows a block diagram 600 of a device 605 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0172] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cancellation mechanism for two-stage sensing). Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0173] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cancellation mechanism for two-stage sensing). In some examples, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0174] The communications manager 620, the receiver 610, the transmitter 615, or various combinations thereof or various components thereof may be examples of means for performing various aspects of cancellation mechanism for two-stage sensing as described herein. For example, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0175] In some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory).

[0176] Additionally, or alternatively, in some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure).

[0177] In some examples, the communications manager 620 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0178] Additionally, or alternatively, the communications manager 620 may support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 620 is capable of, configured to, or operable to support a means for receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting the first set of sensing reference signals in the first set of resources. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0179] By including or configuring the communications manager 620 in accordance with examples as described herein, the device 605 (e.g., a processor controlling or otherwise coupled with the receiver 610, the transmitter 615, the communications manager 620, or a combination thereof) may support techniques for reduced processing, reduced power consumption, more efficient utilization of communication resources, or any combination thereof.

[0180] FIG. 7 shows a block diagram 700 of a device 705 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The device 705 may be an example of aspects of a device 605 or a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0181] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cancellation mechanism for two-stage sensing). Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.

[0182] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to cancellation mechanism for two-stage sensing). In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0183] The device 705, or various components thereof, may be an example of means for performing various aspects of cancellation mechanism for two-stage sensing as described herein. For example, the communications manager 720 may include a control signaling reception component 725, a sensing reference signal transmission component 730, a resource indication component 735, or any combination thereof. The communications manager 720 may be an example of aspects of a communications manager 620 as described herein. In some examples, the communications manager 720, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0184] The communications manager 720 may support wireless communication at a UE in accordance with examples as disclosed herein. The control signaling reception component 725 is capable of, configured to, or operable to support a means for receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The sensing reference signal transmission component 730 is capable of, configured to, or operable to support a means for transmitting the first set of sensing reference signals in the first set of resources. The resource indication component 735 is capable of, configured to, or operable to support a means for transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. The sensing reference signal transmission component 730 is capable of, configured to, or operable to support a means for transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0185] FIG. 8 shows a block diagram 800 of a communications manager 820 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The communications manager 820 may be an example of aspects of a communications manager 620, a communications manager 720, or both, as described herein. The communications manager 820, or various components thereof, may be an example of means for performing various aspects of cancellation mechanism for two-stage sensing as described herein. For example, the communications manager 820 may include a control signaling reception component 825, a sensing reference signal transmission component 830, a target detection component 835, a resource indication component 840, a target tracking component 845, a cancellation request component 850, an activation request component 855, a resource evaluation component 860, a communication parameter component 865, or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses).

[0186] Additionally, or alternatively, the communications manager 820 may support wireless communication at a UE in accordance with examples as disclosed herein. The control signaling reception component 825 is capable of, configured to, or operable to support a means for receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The sensing reference signal transmission component 830 is capable of, configured to, or operable to support a means for transmitting the first set of sensing reference signals in the first set of resources. The target detection component 835 is capable of, configured to, or operable to support a means for detecting one or more targets based on measuring the one or more reflections of the first set of sensing reference signals. The resource indication component 840 is capable of, configured to, or operable to support a means for transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. In some examples, the sensing reference signal transmission component 830 is capable of, configured to, or operable to support a means for transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources. The target tracking component 845 is capable of, configured to, or operable to support a means for tracking the one or more targets based on measuring one or more reflections of the second set of sensing reference signals received at the UE. [0187] In some examples, to support transmitting the indication of the first subset of resources, the cancellation request component 850 is capable of, configured to, or operable to support a means for transmitting a cancellation request indicating one or more resources of the second set of resources that are requested to be canceled.

[0188] In some examples, the cancellation request includes a bitmap indicating one or more resources of the second set of resources that are requested to be canceled.

[0189] In some examples, the cancellation request includes a value indicating a quantity of resources that are requested to be canceled in each period of the second set of resources.

[0190] In some examples, the cancellation request component 850 is capable of, configured to, or operable to support a means for transmitting the cancellation request via uplink control signaling.

[0191] In some examples, to support transmitting the indication of the first subset of resources, the activation request component 855 is capable of, configured to, or operable to support a means for transmitting an activation request indicating that the first subset of resources is requested to remain allocated.

[0192] In some examples, the resource evaluation component 860 is capable of, configured to, or operable to support a means for determining a quantity of resources of the first subset of resources based on a quantity of the one or more targets detected as a result of transmitting the first set of sensing reference signals, one or more locations of the one or more targets, or both.

[0193] In some examples, the resource indication component 840 is capable of, configured to, or operable to support a means for transmitting the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0194] In some examples, the resource indication component 840 is capable of, configured to, or operable to support a means for transmitting the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources. [0195] In some examples, the control signaling reception component 825 is capable of, configured to, or operable to support a means for receiving the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources. In some examples, the resource indication component 840 is capable of, configured to, or operable to support a means for where the indication of the first subset of resources is transmitted in the third set of resources.

[0196] In some examples, the control signaling reception component 825 is capable of, configured to, or operable to support a means for receiving second control signaling including a confirmation of the indication of the first subset of resources.

[0197] In some examples, one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals.

[0198] In some examples, the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals.

[0199] In some examples, the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters including one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof. In some examples, the first set of sensing reference signals, the second set of sensing reference signals, or both, are transmitted in accordance with the one or more sensing parameters.

[0200] In some examples, the first control signaling is radio resource control signaling.

[0201] FIG. 9 shows a diagram of a system 900 including a device 905 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The device 905 may be an example of or include the components of a device 605, a device 705, or a UE 115 as described herein. The device 905 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 905 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 920, an input/output (VO) controller 910, a transceiver 915, an antenna 925, a memory 930, code 935, and a processor 940. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 945).

[0202] The I/O controller 910 may manage input and output signals for the device 905. The I/O controller 910 may also manage peripherals not integrated into the device 905. In some cases, the I/O controller 910 may represent a physical connection or port to an external peripheral. In some cases, the VO controller 910 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. Additionally, or alternatively, the VO controller 910 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the VO controller 910 may be implemented as part of a processor, such as the processor 940. In some cases, a user may interact with the device 905 via the I/O controller 910 or via hardware components controlled by the I/O controller 910.

[0203] In some cases, the device 905 may include a single antenna 925. However, in some other cases, the device 905 may have more than one antenna 925, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 915 may communicate bi-directionally, via the one or more antennas 925, wired, or wireless links as described herein. For example, the transceiver 915 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 915 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 925 for transmission, and to demodulate packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be an example of a transmitter 615, a transmitter 715, a receiver 610, a receiver 710, or any combination thereof or component thereof, as described herein.

[0204] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed by the processor 940, cause the device 905 to perform various functions described herein. The code 935 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 935 may not be directly executable by the processor 940 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory 930 may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.

[0205] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting cancellation mechanism for two-stage sensing). For example, the device 905 or a component of the device 905 may include a processor 940 and memory 930 coupled with or to the processor 940, the processor 940 and memory 930 configured to perform various functions described herein.

[0206] Additionally, or alternatively, the communications manager 920 may support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting the first set of sensing reference signals in the first set of resources. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

[0207] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, or any combination thereof.

[0208] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 915, the one or more antennas 925, or any combination thereof. Although the communications manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 920 may be supported by or performed by the processor 940, the memory 930, the code 935, or any combination thereof. For example, the code 935 may include instructions executable by the processor 940 to cause the device 905 to perform various aspects of cancellation mechanism for two-stage sensing as described herein, or the processor 940 and the memory 930 may be otherwise configured to perform or support such operations.

[0209] FIG. 10 shows a block diagram 1000 of a device 1005 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The device 1005 may be an example of aspects of a network entity 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0210] The receiver 1010 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). Information may be passed on to other components of the device 1005. In some examples, the receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0211] The transmitter 1015 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1005. For example, the transmitter 1015 may output information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). In some examples, the transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include or be coupled with a modem.

[0212] The communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations thereof or various components thereof may be examples of means for performing various aspects of cancellation mechanism for two-stage sensing as described herein. For example, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may support a method for performing one or more of the functions described herein. [0213] In some examples, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory).

[0214] Additionally, or alternatively, in some examples, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure).

[0215] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.

[0216] Additionally, or alternatively, the communications manager 1020 may support wireless communication at a network entity in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The communications manager 1020 is capable of, configured to, or operable to support a means for receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE. The communications manager 1020 is capable of, configured to, or operable to support a means for canceling, based at least in part on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0217] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 (e.g., a processor controlling or otherwise coupled with the receiver 1010, the transmitter 1015, the communications manager 1020, or a combination thereof) may support techniques for reduced processing, reduced power consumption, more efficient utilization of communication resources, or any combination thereof.

[0218] FIG. 11 shows a block diagram 1100 of a device 1105 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The device 1105 may be an example of aspects of a device 1005 or a network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. The device 1105 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0219] The receiver 1110 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). Information may be passed on to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0220] The transmitter 1115 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1105. For example, the transmitter 1115 may output information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). In some examples, the transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1115 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include or be coupled with a modem.

[0221] The device 1105, or various components thereof, may be an example of means for performing various aspects of cancellation mechanism for two-stage sensing as described herein. For example, the communications manager 1120 may include a control signaling transmission component 1125, a resource indication component 1130, an allocation cancellation component 1135, or any combination thereof. The communications manager 1120 may be an example of aspects of a communications manager 1020 as described herein. In some examples, the communications manager 1120, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1110, the transmitter 1115, or both. For example, the communications manager 1120 may receive information from the receiver 1110, send information to the transmitter 1115, or be integrated in combination with the receiver 1110, the transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein. [0222] The communications manager 1120 may support wireless communication at a network entity in accordance with examples as disclosed herein. The control signaling transmission component 1125 is capable of, configured to, or operable to support a means for transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The resource indication component 1130 is capable of, configured to, or operable to support a means for receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE. The allocation cancellation component 1135 is capable of, configured to, or operable to support a means for canceling, based on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0223] FIG. 12 shows a block diagram 1200 of a communications manager 1220 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The communications manager 1220 may be an example of aspects of a communications manager 1020, a communications manager 1120, or both, as described herein. The communications manager 1220, or various components thereof, may be an example of means for performing various aspects of cancellation mechanism for two-stage sensing as described herein. For example, the communications manager 1220 may include a control signaling transmission component 1225, a resource indication component 1230, an allocation cancellation component 1235, a cancellation request component 1240, an activation request component 1245, a communication parameter component 1250, a sensing parameter component 1255, or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses) which may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105), or any combination thereof.

[0224] Additionally, or alternatively, the communications manager 1220 may support wireless communication at a network entity in accordance with examples as disclosed herein. The control signaling transmission component 1225 is capable of, configured to, or operable to support a means for transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The resource indication component 1230 is capable of, configured to, or operable to support a means for receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE. The allocation cancellation component 1235 is capable of, configured to, or operable to support a means for canceling, based on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0225] In some examples, the control signaling transmission component 1225 is capable of, configured to, or operable to support a means for transmitting, to a second UE, second control signaling assigning at least a portion of the one or more resources of the second set of resources to the second UE.

[0226] In some examples, to support receiving the indication of the first subset of resources, the cancellation request component 1240 is capable of, configured to, or operable to support a means for receiving a cancellation request indicating one or more resources of the second set of resources that are requested to be canceled.

[0227] In some examples, the cancellation request includes a bitmap indicating one or more resources of the second set of resources that are requested to be canceled. [0228] In some examples, the cancellation request includes a value indicating a quantity of resources that are requested to be canceled in each period of the second set of resources.

[0229] In some examples, the cancellation request component 1240 is capable of, configured to, or operable to support a means for receiving the cancellation request via uplink control signaling.

[0230] In some examples, to support receiving the indication of first subset of resources, the activation request component 1245 is capable of, configured to, or operable to support a means for receiving an activation request indicating the first subset of resources that is requested to remain allocated.

[0231] In some examples, the resource indication component 1230 is capable of, configured to, or operable to support a means for receiving the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0232] In some examples, the resource indication component 1230 is capable of, configured to, or operable to support a means for receiving the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

[0233] In some examples, the control signaling transmission component 1225 is capable of, configured to, or operable to support a means for transmitting the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources. In some examples, the resource indication component 1230 is capable of, configured to, or operable to support a means for where the indication of the first subset of resources is received in the third set of resources.

[0234] In some examples, the control signaling transmission component 1225 is capable of, configured to, or operable to support a means for transmitting second control signaling including a confirmation of the indication of the first subset of resources. [0235] In some examples, one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals.

[0236] In some examples, the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals ”.

[0237] In some examples, the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters including one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof. In some examples, the first set of sensing reference signals, the second set of sensing reference signals, or both, are transmitted in accordance with the one or more sensing parameters.

[0238] In some examples, the first control signaling is radio resource control signaling.

[0239] FIG. 13 shows a diagram of a system 1300 including a device 1305 that supports cancellation mechanism for two-stage sensing in accordance with one or more examples as disclosed herein. The device 1305 may be an example of or include the components of a device 1005, a device 1105, or a network entity 105 as described herein. The device 1305 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communications over one or more wired interfaces, over one or more wireless interfaces, or any combination thereof. The device 1305 may include components that support outputting and obtaining communications, such as a communications manager 1320, a transceiver 1310, an antenna 1315, a memory 1325, code 1330, and a processor 1335. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1340).

[0240] The transceiver 1310 may support bi-directional communications via wired links, wireless links, or both as described herein. In some examples, the transceiver 1310 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1310 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1305 may include one or more antennas 1315, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently). The transceiver 1310 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1315, by a wired transmitter), to receive modulated signals (e.g., from one or more antennas 1315, from a wired receiver), and to demodulate signals. In some implementations, the transceiver 1310 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1315 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1315 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1310 may include or be configured for coupling with one or more processors or memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof. In some implementations, the transceiver 1310, or the transceiver 1310 and the one or more antennas 1315, or the transceiver 1310 and the one or more antennas 1315 and one or more processors or memory components (for example, the processor 1335, or the memory 1325, or both), may be included in a chip or chip assembly that is installed in the device 1305. In some examples, the transceiver may be operable to support communications via one or more communications links (e.g., a communication link 125, a backhaul communication link 120, a midhaul communication link 162, a fronthaul communication link 168).

[0241] The memory 1325 may include RAM and ROM. The memory 1325 may store computer-readable, computer-executable code 1330 including instructions that, when executed by the processor 1335, cause the device 1305 to perform various functions described herein. The code 1330 may be stored in a non-transitory computer- readable medium such as system memory or another type of memory. In some cases, the code 1330 may not be directly executable by the processor 1335 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory 1325 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.

[0242] The processor 1335 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, a discrete hardware component, or any combination thereof). In some cases, the processor 1335 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor 1335. The processor 1335 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1325) to cause the device 1305 to perform various functions (e.g., functions or tasks supporting cancellation mechanism for two-stage sensing). For example, the device 1305 or a component of the device 1305 may include a processor 1335 and memory 1325 coupled with the processor 1335, the processor 1335 and memory 1325 configured to perform various functions described herein. The processor 1335 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1330) to perform the functions of the device 1305. The processor 1335 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1305 (such as within the memory 1325). In some implementations, the processor 1335 may be a component of a processing system. A processing system may generally refer to a system or series of machines or components that receives inputs and processes the inputs to produce a set of outputs (which may be passed to other systems or components of, for example, the device 1305). For example, a processing system of the device 1305 may refer to a system including the various other components or subcomponents of the device 1305, such as the processor 1335, or the transceiver 1310, or the communications manager 1320, or other components or combinations of components of the device 1305. The processing system of the device 1305 may interface with other components of the device 1305, and may process information received from other components (such as inputs or signals) or output information to other components. For example, a chip or modem of the device 1305 may include a processing system and one or more interfaces to output information, or to obtain information, or both. The one or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information, or a same interface configured to output information and to obtain information, among other implementations. In some implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and a transmitter, such that the device 1305 may transmit information output from the chip or modem. Additionally, or alternatively, in some implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and a receiver, such that the device 1305 may obtain information or signal inputs, and the information may be passed to the processing system. A person having ordinary skill in the art will readily recognize that a first interface also may obtain information or signal inputs, and a second interface also may output information or signal outputs.

[0243] In some examples, a bus 1340 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, a bus 1340 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within a component of the device 1305, or between different components of the device 1305 that may be co-located or located in different locations (e.g., where the device 1305 may refer to a system in which one or more of the communications manager 1320, the transceiver 1310, the memory 1325, the code 1330, and the processor 1335 may be located in one of the different components or divided between different components).

[0244] In some examples, the communications manager 1320 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links). For example, the communications manager 1320 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1320 may manage communications with other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other network entities 105. In some examples, the communications manager 1320 may support an X2 interface within an LTE/LTE-A wireless communications network technology to provide communication between network entities 105.

[0245] Additionally, or alternatively, the communications manager 1320 may support wireless communication at a network entity in accordance with examples as disclosed herein. For example, the communications manager 1320 is capable of, configured to, or operable to support a means for transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The communications manager 1320 is capable of, configured to, or operable to support a means for receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE. The communications manager 1320 is capable of, configured to, or operable to support a means for canceling, based at least in part on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0246] By including or configuring the communications manager 1320 in accordance with examples as described herein, the device 1305 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, or any combination thereof.

[0247] In some examples, the communications manager 1320 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1310, the one or more antennas 1315 (e.g., where applicable), or any combination thereof. Although the communications manager 1320 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1320 may be supported by or performed by the transceiver 1310, the processor 1335, the memory 1325, the code 1330, or any combination thereof. For example, the code 1330 may include instructions executable by the processor 1335 to cause the device 1305 to perform various aspects of cancellation mechanism for two-stage sensing as described herein, or the processor 1335 and the memory 1325 may be otherwise configured to perform or support such operations.

[0248] FIG. 14 shows a flowchart illustrating a method 1400 that supports cancellation mechanism for two-stage sensing in accordance with examples as disclosed herein. The operations of the method 1400 may be implemented by a UE or its components as described herein. For example, the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. In some examples, a UE may execute a set of instructions to control the functional elements of the wireless UE to perform the described functions. Additionally, or alternatively, the wireless UE may perform aspects of the described functions using special-purpose hardware.

[0249] At 1405, the method may include receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The operations of 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a control signaling reception component 825 as described with reference to FIG. 8.

[0250] At 1410, the method may include transmitting the first set of sensing reference signals in the first set of resources. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a sensing reference signal transmission component 830 as described with reference to FIG. 8. [0251] At 1415, the method may include transmitting, based on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals. The operations of 1420 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed by a resource indication component 840 as described with reference to FIG. 8.

[0252] At 1420, the method may include transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources. The operations of 1425 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1425 may be performed by a sensing reference signal transmission component 830 as described with reference to FIG. 8.

[0253] FIG. 15 shows a flowchart illustrating a method 1500 that supports cancellation mechanism for two-stage sensing in accordance with examples as disclosed herein. The operations of the method 1500 may be implemented by a network entity or its components as described herein. For example, the operations of the method 1500 may be performed by a network entity as described with reference to FIGs. 1 through 5 and 10 through 13. In some examples, a network entity may execute a set of instructions to control the functional elements of the wireless network entity to perform the described functions. Additionally, or alternatively, the wireless network entity may perform aspects of the described functions using special-purpose hardware.

[0254] At 1505, the method may include transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, where the first set of resources and the second set of resources are periodic resources. The operations of 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a control signaling transmission component 1225 as described with reference to FIG. 12. [0255] At 1510, the method may include receiving, based on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, where the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE. The operations of 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a resource indication component 1230 as described with reference to FIG. 12.

[0256] At 1515, the method may include canceling, based on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources. The operations of 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by an allocation cancellation component 1235 as described with reference to FIG. 12.

[0257] The following provides an overview of aspects of the present disclosure:

[0258] Aspect 1 : A method for wireless communication at a UE, comprising: receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, wherein the first set of resources and the second set of resources are periodic resources; transmitting the first set of sensing reference signals in the first set of resources; detecting one or more targets based at least in part on one or more reflections of the first set of sensing reference signals received at the UE; transmitting, based at least in part on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals; transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources; and tracking the one or more targets based at least in part on one or more reflections of the second set of sensing reference signals received at the UE. [0259] Aspect 2: The method of aspect 1, wherein transmitting the indication of the first subset of resources comprises: transmitting a cancellation request indicating one or more resources of the second set of resources that are requested to be cancelled.

[0260] Aspect 3 : The method of aspect 2, wherein the cancellation request comprises a bitmap indicating one or more resources of the second set of resources that are requested to be cancelled.

[0261] Aspect 4: The method of any of aspects 2 through 3, wherein the cancellation request comprises a value indicating a quantity of resources that are requested to be cancelled in each period of the second set of resources.

[0262] Aspect 5: The method of any of aspects 2 through 4, further comprising: transmitting the cancellation request via uplink control signaling.

[0263] Aspect 6: The method of any of aspects 1 through 5, wherein transmitting the indication of the first subset of resources comprises: transmitting an activation request indicating that the first subset of resources is requested to remain allocated.

[0264] Aspect 7: The method of any of aspects 1 through 6, further comprising: detecting one or more targets based at least in part on measuring the one or more reflections of the first set of sensing reference signals, and determining a quantity of resources of the first subset of resources based at least in part on a quantity of the one or more targets detected as a result of transmitting the first set of sensing reference signals, one or more locations of the one or more targets, or both.

[0265] Aspect 8: The method of any of aspects 1 through 7, further comprising: transmitting the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0266] Aspect 9: The method of any of aspects 1 through 8, further comprising: transmitting the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

[0267] Aspect 10: The method of any of aspects 1 through 9, further comprising: receiving the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources; wherein the indication of the first subset of resources is transmitted in the third set of resources.

[0268] Aspect 11 : The method of any of aspects 1 through 10, further comprising: receiving second control signaling comprising a confirmation of the indication of the first subset of resources.

[0269] Aspect 12: The method of any of aspects 1 through 11, wherein one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals.

[0270] Aspect 13: The method of aspect 12, wherein the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals.

[0271] Aspect 14: The method of any of aspects 1 through 13, wherein the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters comprising one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof; and the first set of sensing reference signals, the second set of sensing reference signals, or both, are transmitted in accordance with the one or more sensing parameters.

[0272] Aspect 15: The method of any of aspects 1 through 14, wherein the first control signaling is radio resource control signaling.

[0273] Aspect 16: A method for wireless communication at a network entity, comprising: transmitting first control signaling allocating, to a UE, a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, wherein the first set of resources and the second set of resources are periodic resources; receiving, based at least in part on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, wherein the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE; and canceling, based at least in part on receiving the indication of the first subset of resources, the allocation of one or more resources of the second set of resources that are different than the first subset of resources.

[0274] Aspect 17: The method of aspect 16, further comprising: transmitting, to a second UE, second control signaling assigning at least a portion of the one or more resources of the second set of resources to the second UE.

[0275] Aspect 18: The method of any of aspects 16 through 17, wherein receiving the indication of the first subset of resources comprises: receiving a cancellation request indicating one or more resources of the second set of resources that are requested to be cancelled.

[0276] Aspect 19: The method of aspect 18, wherein the cancellation request comprises a bitmap indicating one or more resources of the second set of resources that are requested to be cancelled.

[0277] Aspect 20: The method of any of aspects 18 through 19, wherein the cancellation request comprises a value indicating a quantity of resources that are requested to be cancelled in each period of the second set of resources.

[0278] Aspect 21 : The method of any of aspects 18 through 20, further comprising: receiving the cancellation request via uplink control signaling.

[0279] Aspect 22: The method of any of aspects 16 through 21, wherein receiving the indication of first subset of resources comprises: receiving an activation request indicating the first subset of resources that is requested to remain allocated.

[0280] Aspect 23: The method of any of aspects 16 through 22, further comprising: receiving the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

[0281] Aspect 24: The method of any of aspects 16 through 23, further comprising: receiving the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

[0282] Aspect 25: The method of any of aspects 16 through 24, further comprising: transmitting the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources; wherein the indication of the first subset of resources is received in the third set of resources.

[0283] Aspect 26: The method of any of aspects 16 through 25, further comprising: transmitting second control signaling comprising a confirmation of the indication of the first subset of resources.

[0284] Aspect 27: The method of any of aspects 16 through 26, wherein one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals.

[0285] Aspect 28: The method of aspect 27, wherein the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals."

[0286] Aspect 29: The method of any of aspects 16 through 28, wherein the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters comprising one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof; and the first set of sensing reference signals, the second set of sensing reference signals, or both, are transmitted in accordance with the one or more sensing parameters.

[0287] Aspect 30: The method of any of aspects 16 through 29, wherein the first control signaling is radio resource control signaling.

[0288] Aspect 31 : An apparatus for wireless communication at a UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 15.

[0289] Aspect 32: An apparatus for wireless communication at a UE, comprising at least one means for performing a method of any of aspects 1 through 15.

[0290] Aspect 33: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 15.

[0291] Aspect 34: An apparatus for wireless communication at a network entity, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 16 through 30.

[0292] Aspect 35: An apparatus for wireless communication at a network entity, comprising at least one means for performing a method of any of aspects 16 through 30.

[0293] Aspect 36: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform a method of any of aspects 16 through 30.

[0294] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.

[0295] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.

[0296] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0297] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0298] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations. [0299] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0300] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of’ or “one or more of’) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.”

[0301] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure), ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.

[0302] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.

[0303] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration,” and not “preferred” or “advantageous over other examples.” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0304] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

CLAIMS What is claimed is:

1. An apparatus for wireless communication at a user equipment (UE), comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receive first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, wherein the first set of resources and the second set of resources are periodic resources; transmit the first set of sensing reference signals in the first set of resources; transmit, based at least in part on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals; and transmit, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

2. The apparatus of claim 1, wherein the instructions to transmit the indication of the first subset of resources are executable by the processor to cause the apparatus to: transmit a cancellation request indicating one or more resources of the second set of resources that are requested to be canceled.

3. The apparatus of claim 2, wherein the cancellation request comprises a bitmap indicating one or more resources of the second set of resources that are requested to be canceled.

4. The apparatus of claim 2, wherein the cancellation request comprises a value indicating a quantity of resources that are requested to be canceled in each period of the second set of resources.

5. The apparatus of claim 2, wherein the instructions are further executable by the processor to cause the apparatus to: transmit the cancellation request via uplink control signaling.

6. The apparatus of claim 1, wherein the instructions to transmit the indication of the first subset of resources are executable by the processor to cause the apparatus to: transmit an activation request indicating that the first subset of resources is requested to remain allocated.

7. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: detect one or more targets based at least in part on measuring the one or more reflections of the first set of sensing reference signals; and determine a quantity of resources of the first subset of resources based at least in part on a quantity of the one or more targets detected as a result of transmitting the first set of sensing reference signals, one or more locations of the one or more targets, or both.

8. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: transmit the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

9. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: transmit the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

10. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: receive the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources; wherein the indication of the first subset of resources be transmitted in the third set of resources.

11. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: receive second control signaling comprising a confirmation of the indication of the first subset of resources.

12. The apparatus of claim 1, wherein one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals.

13. The apparatus of claim 12, wherein the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals.

14. The apparatus of claim 1, wherein: the first control signaling indicates, for the first set of resources, the second set of resources, or both, one or more sensing parameters comprising one or more sensing resource signal periods, one or more sensing resource signal slot offsets, one or more sensing resource signal bandwidths, one or more sensing resource signal comb numbers, one or more sensing resource signal comb offsets, one or more sensing resource signal resource durations, one or more sensing resource signal symbol intervals, one or more quantities of sensing resource signal resources allocated per period, or any combination thereof; and the first set of sensing reference signals, the second set of sensing reference signals, or both, are transmitted in accordance with the one or more sensing parameters.

15. The apparatus of claim 1, wherein: the first control signaling is radio resource control signaling.

16. An apparatus for wireless communication at a network entity, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: transmit first control signaling allocating, to a user equipment (UE), a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, wherein the first set of resources and the second set of resources are periodic resources; receive, based at least in part on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, wherein the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE; and canceling, based at least in part on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.

17. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: transmit, to a second UE, second control signaling assigning at least a portion of the one or more resources of the second set of resources to the second UE.

18. The apparatus of claim 16, wherein the instructions to receive the indication of the first subset of resources are executable by the processor to cause the apparatus to: receive a cancellation request indicating one or more resources of the second set of resources that are requested to be canceled.

19. The apparatus of claim 18, wherein the cancellation request comprises a bitmap indicating one or more resources of the second set of resources that are requested to be canceled.

20. The apparatus of claim 18, wherein the cancellation request comprises a value indicating a quantity of resources that are requested to be canceled in each period of the second set of resources.

21. The apparatus of claim 18, wherein the instructions are further executable by the processor to cause the apparatus to: receive the cancellation request via uplink control signaling.

22. The apparatus of claim 16, wherein the instructions to receive the indication of first subset of resources are executable by the processor to cause the apparatus to: receive an activation request indicating the first subset of resources that is requested to remain allocated.

23. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: receive the indication of the first subset of resources in accordance with a first periodicity of the first set of resources or a second periodicity of the second set of resources.

24. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: receive the indication of the first subset of resources in accordance with a first periodicity that is a multiple of a second periodicity of the first set of resources or a third periodicity of the second set of resources.

25. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: transmit the first control signaling allocating a third set of resources for transmission of the indication of the first subset of resources; wherein the indication of the first subset of resources be received in the third set of resources.

26. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: transmit second control signaling comprising a confirmation of the indication of the first subset of resources.

27. The apparatus of claim 16, wherein one or more communication parameters associated with the first set of sensing reference signals are different than one or more communication parameters associated with the second set of sensing reference signals.

28. The apparatus of claim 27, wherein the second set of sensing reference signals are associated with larger bandwidths, longer durations, narrower beam widths, or any combination thereof as compared to corresponding bandwidths, durations, beam widths, or any combination thereof of the first set of sensing reference signals.

29. A method for wireless communication at a user equipment (UE), comprising: receiving first control signaling allocating a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, wherein the first set of resources and the second set of resources are periodic resources; transmitting the first set of sensing reference signals in the first set of resources; transmitting, based at least in part on transmitting the first set of sensing reference signals and measuring one or more reflections of the first set of sensing reference signals, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals; and transmitting, in one or more beams at least partially oriented towards the one or more reflections of the first set of sensing reference signals, the second set of sensing reference signals in the first subset of resources of the second set of resources.

30. A method for wireless communication at a network entity, comprising: transmitting first control signaling allocating, to a user equipment (UE), a first set of resources for transmission of a first set of sensing reference signals and a second set of resources for transmission of a second set of sensing reference signals, wherein the first set of resources and the second set of resources are periodic resources; receiving, based at least in part on transmitting the first control signaling, an indication of a first subset of resources of the second set of resources in which the UE will transmit the second set of sensing reference signals, wherein the second set of sensing reference signals are to be transmitted in one or more beams at least partially oriented towards one or more reflections of the first set of sensing reference signals received at the UE; and canceling, based at least in part on receiving the indication of the first subset of resources, allocation of one or more resources of the second set of resources that are different than the first subset of resources.