Collision management for on-off keying signals and reference signals
Patent Information
- Application Number
- PCT/CN2024/080511
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-10-02
AI Technical Summary
Existing wireless communication systems face challenges in managing collisions between on-off keying (OOK) signals and reference signals, leading to inefficient and unreliable data transmission.
Implementing a reference signal configuration that allocates a portion of the transmission duration for OOK signals, allowing frequency-division-multiplexed transmission with reference signals, and using control signaling to manage time occasions for OOK and reference signals, thereby reducing collisions and enhancing reception reliability.
The proposed solution reduces collisions between OOK signals and reference signals, resulting in more reliable and efficient wireless communications by ensuring proper timing and resource allocation.
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Figure CN2024080511_02102025_PF_FP_ABST
Abstract
Description
COLLISION MANAGEMENT FOR ON-OFF KEYING SIGNALS AND REFERENCE SIGNALS
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including collision management for on-off keying (OOK) signals and reference signals.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] An on-off keying (OOK) signal may be a signal that employs a simple amplitude-shift keying (ASK) modulation scheme that varies the power level of the OOK signal between two or more discrete power levels.SUMMARY
[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support collision management for on-off keying (OOK) signals and reference signals. For example, the described techniques provide for a wireless device to transmit one or more reference signals of a reference signal burst in accordance with a reference signal configuration. The wireless device may transmit an OOK signal during a portion of a time duration allocated for transmission of the reference signal burst that is indicated by the reference signal configuration to be available for OOK signal transmission. In some examples, the one or more reference signals may be transmitted via a first resource that is frequency-division-multiplexed (FDMed) with a second resource for OOK signal transmission, in accordance with the reference signal configuration. In some examples, the wireless device may transmit, to an energy harvesting device, control signaling indicating multiple time occasions. The control signaling may indicate a first subset of the multiple time occasions are one or more OOK time occasions and a second subset of the multiple time occasions are reference signal time occasions. The wireless device may transmit one or more OOK signals during the one or more OOK time occasions and may transmit one or more reference signals during the one or more reference signal time occasions. The wireless device may monitor for a message responsive to the one or more reference signals, responsive to the OOK signal, or both.
[0006] A method for wireless communications by a wireless device is described. The method may include transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission, transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission, and monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0007] A wireless device for wireless communications is described. The wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the wireless device to transmit a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission, transmit an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission, and monitor for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0008] Another wireless device for wireless communications is described. The wireless device may include means for transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission, means for transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission, and means for monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0009] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to transmit a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission, transmit an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission, and monitor for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0010] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a configuration message, the configuration message indicating the reference signal configuration and identifying a length of the OOK signal, a periodicity of the OOK signal, or both.
[0011] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the configuration message indicates an index of a lookup table and the index of the lookup table indicates both the length of the OOK signal and the periodicity of the OOK signal.
[0012] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the configuration message indicates a reduction in a quantity of reference signals in the reference signal burst relative to a second reference signal configuration.
[0013] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the configuration message indicates a reduction in the length of the OOK signal, the periodicity of the OOK signal, or both, relative to a second reference signal configuration.
[0014] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the portion of the duration of the reference signal burst available for transmission of the OOK signal may be non-overlapping with the set of multiple reference signals.
[0015] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the set of multiple reference signals include a synchronization signal block (SSB) , a cell-specific reference signal (CRS) , a tracking reference signal (TRS) , a positioning reference signal (PRS) , a channel state information reference signal (CSI-RS) , or a combination thereof.
[0016] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the OOK signal may be one of a synchronization signal (SS) , a wake-up signal (WUS) , a forward link synchronization signal, or a forward link packet.
[0017] A method for wireless communications by a wireless device is described. The method may include transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is FDMed with a second resource for OOK signal transmission, transmitting an OOK signal via the second resource, and monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0018] A wireless device for wireless communications is described. The wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the wireless device to transmit, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is FDMed with a second resource for OOK signal transmission, transmit an OOK signal via the second resource, and monitor for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0019] Another wireless device for wireless communications is described. The wireless device may include means for transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is FDMed with a second resource for OOK signal transmission, means for transmitting an OOK signal via the second resource, and means for monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0020] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to transmit, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is FDMed with a second resource for OOK signal transmission, transmit an OOK signal via the second resource, and monitor for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0021] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, a subcarrier spacing may be the same for the OOK signal and the one or more reference signals of the set of multiple reference signals.
[0022] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, a subcarrier spacing may be different for the OOK signal and the one or more reference signals of the set of multiple reference signals.
[0023] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the reference signal configuration indicates a guard band between the first resource and the second resource.
[0024] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, a size of the guard band may be based on a power boost of the OOK signal.
[0025] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, a power spectral density of the OOK signal may be less than or equal to a power spectral density of the one or more reference signals of the set of multiple reference signals.
[0026] A method for wireless communications by a wireless device is described. The method may include transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions, transmitting one or more OOK signals during the one or more OOK time occasions, transmitting one or more reference signals during the one or more reference signal time occasions, and monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0027] A wireless device for wireless communications is described. The wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the wireless device to transmit, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions, transmit one or more OOK signals during the one or more OOK time occasions, transmit one or more reference signals during the one or more reference signal time occasions, and monitor for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0028] Another wireless device for wireless communications is described. The wireless device may include means for transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions, means for transmitting one or more OOK signals during the one or more OOK time occasions, means for transmitting one or more reference signals during the one or more reference signal time occasions, and means for monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0029] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to transmit, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions, transmit one or more OOK signals during the one or more OOK time occasions, transmit one or more reference signals during the one or more reference signal time occasions, and monitor for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0030] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, transmitting the control signaling may include operations, features, means, or instructions for transmitting a single control message indicating the one or more OOK time occasions and the one or more reference signal time occasions.
[0031] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, transmitting the control signaling may include operations, features, means, or instructions for transmitting a first control message indicating the set of multiple time occasions and transmitting a second control message indicating the one or more reference signal time occasions.
[0032] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the set of multiple time occasions may be contiguous time occasions.
[0033] Some examples of the method, wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for refraining from transmission in one or more time occasions of the one or more OOK time occasions based on two or more reference signal time occasions occurring within a defined time duration.
[0034] In some examples of the method, wireless devices, and non-transitory computer-readable medium described herein, the defined time duration may be a quantity of slots.BRIEF DESCRIPTION OF THE DRAWINGS
[0035] FIGs. 1 and 2 show examples of wireless communications systems that support collision management for on-off keying (OOK) signals and reference signals in accordance with one or more aspects of the present disclosure.
[0036] FIGs. 3 through 7 show examples of resource diagrams that support collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure.
[0037] FIGs. 8 and 9 show examples of process flows that support collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure.
[0038] FIGs. 10 and 11 show block diagrams of devices that support collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure.
[0039] FIG. 12 shows a block diagram of an action response component that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure.
[0040] FIG. 13 shows a diagram of a system including a device that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure.
[0041] FIGs. 14 through 17 show flowcharts illustrating methods that support collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0042] Various aspects relate generally to wireless communication and more particularly to on-off keying (OOK) signal transmissions and reference signal transmissions. Some aspects relate more specifically to techniques for collision management between an OOK signal and one or more reference signals of a reference signal burst. In some examples, a wireless device may implement a time domain-based collision management procedure, a frequency domain-based collision management procedure, or both. To implement a collision management procedure, the wireless device may transmit a configuration message to a user equipment (UE) indicating a reference signal configuration. The reference signal configuration may indicate a duration of a reference signal burst and that a portion of the duration is available for OOK signal transmission. The wireless device may also indicate, via the reference signal configuration, one or more other parameters to be used in a collision management procedure, such as an OOK signal length, an OOK signal periodicity, an index of a lookup table that indicates both the OOK signal length and the OOK signal periodicity, a reduction in the quantity of reference signals in the reference signal burst, a first resource for transmission of the reference signals, a second resource for transmission of the OOK signal, one or more guard bands between the OOK signal and one or more other signals, a size of a guard band, or another parameter. The wireless device may then transmit the one or more reference signals of the reference signal burst and the OOK signal to a second device in accordance with the reference signal configuration and monitor for a response from the second device.
[0043] A collision management procedure may also be implemented in an ambient Internet of Things (A-IoT) scenario, in which the second device is an energy harvesting device. The wireless device may transmit control signaling to the energy harvesting device that indicates a quantity of OOK time occasions and a quantity of reference signal time occasions. The wireless device may transmit the OOK signal in the OOK time occasions, transmit the reference signals in the reference signal time occasions, and monitor for a response from the energy harvesting device.
[0044] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by transmitting an OOK signal and one or more reference signals in accordance with a reference signal configuration, the described techniques can be used to reduce or prevent collisions between the OOK signal and the one or more reference signals. More specifically, the reference signals transmitted according to the reference signal configuration may be more likely to be successfully received at a second device than reference signals transmitted according to a different reference signal configuration or no reference signal configuration when OOK signals may also be transmitted by the wireless device. By reducing collisions between the one or more reference signals and the OOK signal, aspects of the present disclosure may achieve more reliable and more efficient wireless communications.
[0045] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further described with reference to resource diagrams 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 collision management for OOK signals and reference signals.
[0046] FIG. 1 shows an example of a wireless communications system 100 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., 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.
[0047] 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 communication link (s) 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 the communication link (s) 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) .
[0048] 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 in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0049] 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.
[0050] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 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 the 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 link (s) 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) or 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.
[0051] One or more of the network entities 105 or network equipment 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 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 one network entity (e.g., a network entity 105 or a single RAN node, such as a base station 140) .
[0052] 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 multiple network entities (e.g., network entities 105) , such as an integrated access and 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) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an 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) system, such as an SMO system 180, 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 of the 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) ) .
[0053] 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, or 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 adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (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 multiple different RUs, such as an RU 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 a DU 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 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 (e.g., one or more of the network entities 105) that are in communication via such communication links.
[0054] In some wireless communications systems (e.g., the 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 of the network entities 105 (e.g., network entities 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network entity 105 or base station 140 (such as a donor network entity or a donor base station) . The one or more donor entities (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with 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 IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 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., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0055] 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 test 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., components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0056] 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 (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0057] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate 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.
[0058] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY 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, such as one or more of the network entities 105) .
[0059] 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.
[0060] 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 Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf 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) .
[0061] 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, such as the wireless communications system 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., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0062] 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) ) .
[0063] 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 UEs 115 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0064] 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, such as the coverage area 110. In some examples, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network entity (e.g., a network entity 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network entities (e.g., the network entities 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0065] Some UEs 115, such as MTC or IoT devices, may be relatively 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.
[0066] 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.
[0067] In some examples, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a 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 one or more of the 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.
[0068] 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.
[0069] 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 one hundred 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.
[0070] 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) RAT, 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.
[0071] 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.
[0072] 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) .
[0073] In the wireless communications system 100, a wireless device (e.g., the network entity 105) may transmit one or more OOK signals (e.g., a synchronization signal (SS) , a wake-up signal (WUS) , and forward link SS, or a forward link packet via a communication link 125) to a UE 115. The OOK signal may be a signal that employs a simple amplitude-shift keying (ASK) modulation scheme that varies the power level of the OOK signal between two or more discrete power levels. However, in some examples, transmission of an OOK signal may interfere with important new radio (NR) and long-term evolution (LTE) signals, such as one or more synchronization signal blocks (SSBs) , cell-specific reference signals (CRSs) , tracking reference signals (TRSs) , positioning reference signals (PRSs) , channel state information reference signals (CSI-RSs) , and other reference signals (RSs) . Interference caused by the OOK signals may prevent the reception of these important reference signals, e.g., at the UE 115, thus reducing reliability and efficiency of wireless communication.
[0074] In some implementations, the network entity 105 may transmit multiple reference signals of a reference signal burst in accordance with a reference signal configuration. The reference signal configuration may indicate a reference signal burst duration and may indicate that a portion of the duration is available for OOK signal transmission. The network entity 105 may transmit an OOK signal during the portion of the reference signal burst that is available for OOK signal transmission and monitor for a message (e.g., from a UE 115) responsive to one or more of the multiple reference signals of the reference signal burst, the OOK signal, or both. In some examples, the wireless device may transmit a configuration message indicating the reference signal configuration; identifying a length of the OOK signal and a periodicity of the OOK signal (e.g., by indicating an index of a lookup table) ; indicating a reduction in a quantity of reference signals in the reference signal burst relative to a second reference signal configuration (e.g., previous reference signal configuration) ; indicating a reduction in the length of the OOK signal, the periodicity of the OOK signal, or both relative to the second reference signal configuration; or any combination thereof.
[0075] In some implementations, the reference signal configuration may indicate that a first resource for reference signal burst transmission is FDMed with a second resource for OOK signal transmission. For example, the network entity 105 may transmit the multiple reference signals of the reference signal burst via the first resource and may transmit the OOK signal via the second resource. In some cases, a subcarrier spacing may be the same for the OOK signal and the multiple reference signals. In some other cases, the subcarrier spacing may be different for the OOK signal and the multiple reference signals. In such cases, the reference signal configuration may indicate a guard band between the first resource and the second resource, where a size of the guard band may be based on a power boost of the OOK signal. Additionally, or alternatively, a power spectral density of the OOK signal may be less than or equal to a power spectral density of the multiple reference signals.
[0076] In some implementations, the network entity 105 may wirelessly communicate with a UE 115 that may be an energy harvesting device (e.g., an A-IoT device) . For example, the network entity 105 may transmit control signaling indicating one or more time occasions (e.g., contiguous time occasions) . The control signaling may indicate that a first subset of the one or more time occasions are OOK time occasions and that a second subset of the one or more time occasions are reference signal time occasions. The wireless device may transmit one or more OOK signals during the one or more OOK time occasions, transmit one or more reference signals during the one or more reference signal time occasions, and monitor for a response from the UE 115.
[0077] FIG. 2 shows an example of a wireless communications system 200 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. In some examples, wireless communications system 200 may implement aspects of wireless communications system 100. For example, wireless communications system 200 includes a UE 115-a, a UE 115-b, and a UE 115-c, which may be examples of the corresponding devices described with reference to FIG. 1, and a wireless device 205, which may be an example of a network entity 105 described with reference to FIG. 1. Additionally, or alternatively, the UEs 115-a, 115-b, and 115-c and the wireless device 205 may each be examples of other types of wireless devices, such as an IAB node, an energy harvesting device, a reader device, an A-IoT device, a low-power wake-up radio (LP-WUR) , or another type of transmitter or receiver. Thus, although aspects of the present disclosure are described with reference to UEs 115 and a wireless device 205, it is understood that the described techniques may be performed by a wireless device different from a UE 115 and a network entity 105. As described herein, operations performed by the UEs 115 and the wireless device 205 may be respectively performed by a UE 115, a network entity 105, or another wireless device, and the examples shown should not be construed as limiting.
[0078] Devices in the wireless communications system 200 may support transmission and reception of one or more OOK signals 220 (e.g., a signal that uses an OOK waveform for synchronization) , one or more reference signals 215, and one or more other signals. The one or more OOK signals may include a low-power synchronization signal (LP-SS) , a low-power wake-up signal (LP-WUS) , an A-IoT forward link (FL) SS (e.g., a low-power SS) , an A-IoT FL regular packet, or any combination thereof. A low-power signal may be transmitted via low-power architecture that may have no power amplifier (PA) , no inverse fast Fourier transform (IFFT) , and no phase-locked loop (PLL) , and operate around 100 watts. The one or more reference signals may include an SSB, a CRS, a TRS, a PRS, a CSI-RS, or any combination thereof. For example, the one or more reference signals may be OFDM reference signals. The one or more other signals may include a PDCCH, a PDSCH, a configuration message 210, a response message 225, a control message 230, another NR or LTE signal, or any combination thereof. In some examples, one or more OOK signals 220 may collide with one or more reference signals 215 (or one or more other signals) . For example, an OOK signal 220 (e.g., an LP-SS) may be transmitted at 4.32 MHz at spectrum center, with a duration of 28 OFDM symbols and a periodicity of 320 ms. A reference signal 215 (e.g., an SSB) may be transmitted in a 5 ms half-frame, with a periodicity of 5 ms, between 3 GHz and 6 GHz. A reference signal burst duration of 16 OFDM symbols may not be long enough to transmit the reference signal without a persistent collision (e.g., a time domain collision) between the reference signal 215 and the OOK signal 220, thus interfering with the reception of the reference signal 215 and reducing reliability and efficiency of wireless communications.
[0079] In some implementations, the wireless device 205 may support a time domain-based collision management procedure. For example, the wireless device 205 may transmit (e.g., output) , and the UE 115-a may receive (e.g., obtain) , a configuration message 210 that may indicate a reference signal configuration. In some examples, the configuration message 210 may identify a length of the OOK signal 220-a (e.g., a quantity of OFDM symbols) , a periodicity of the OOK signal 220-a (e.g., in units of ms) , or both. For example, the configuration message 210 may indicate an index of a lookup table (e.g., Table 1) that indicates both the length of the OOK signal 220-a and the periodicity of the OOK signal 220-a. In one case, the configuration message 210 may indicate the index ‘10, ’ indicating that the length of the OOK signal 220-a is 14 OFDM symbols and the periodicity of the OOK signal 220-a is 160 ms. In some examples, the lookup table may be RRC configured, while in other examples the lookup table may be predefined (e.g., in a standard) and the configuration message 210 (e.g., an RRC message) may indicate the index (e.g., a row index) of the lookup table. In some examples (e.g., because the signaling overhead may be small) , the OOK signal 220-a payload may indicate the reduced length of the OOK signal 220-a and the reduced periodicity of the OOK signal 220-a (e.g., by indicating an index of the lookup table) .
[0080] Table 1: Example lookup table
[0081] In some examples, the configuration message 210 may indicate a reduction in a quantity of reference signals 215-a in a reference signal burst relative to a second reference signal configuration (e.g., by indicating an absolute quantity of reference signals 215-a or a relative quantity of reference signals 215-a) to avoid a collision between the reference signals 215-a and the OOK signal 220-a, as described in more detail with reference to FIG. 3. Additionally, or alternatively, the configuration message 210 may indicate a reduction in the length of the OOK signal 220-a (e.g., by indicating an absolute length of the OOK signal 220-a or a relative length of the OOK signal 220-a) , a reduction in the periodicity of the OOK signal 220-a (e.g., by indicating an absolute periodicity of the OOK signal 220-a or a relative periodicity of the OOK signal 220-a) , or both, relative to the second signal configuration. That is, the configuration message 210 may indicate an increase of the density of OOK signal transmission in the time domain, as described in more detail with reference to FIG. 4. For example, the configuration message 210 may indicate an index of the lookup table indicating the length of the OOK signal 220-a and the periodicity of the OOK signal 220-a, where the second configuration message 210 indicated an index of the lookup table indicating a relatively longer length of the OOK signal 220-a and a relatively shorter periodicity of the OOK signal 220-a. In an example, the OOK signal 220-a (e.g., LP-SS) may be shortened from 28 to 14 OFDM symbol duration, with doubled density from 320 ms to 160 ms (e.g., 14 OFDM symbol OOK signal is transmitted every 160 ms instead of a 28 OFDM symbol OOK signal transmitted every 320 ms) .
[0082] The wireless device 205 may transmit, and the UE 115-a may receive, one or more reference signals 215-a of a reference signal burst in accordance with the reference signal configuration (e.g., as indicated by the configuration message 210) . In some examples, the configuration message 210 may indicate a duration of the reference signal burst (e.g., a quantity of OFDM symbols) and that a portion of the reference signal burst duration is available for transmission of OOK signal 220-a. In some examples, the portion of the reference signal burst duration is available for transmission of OOK signal 220-a may be non-overlapping with the one or more reference signals 215-a of the reference signal burst. The wireless device 205 may transmit, and the UE 115-a may receive, the OOK signal 220-a during the portion of the reference signal burst duration that is available for transmission of OOK signal 220-a. The wireless device 205 may monitor for a response message 225-a responsive to one or more of the reference signals 215-a, responsive to the OOK signal 220-a, or responsive to both. In some examples, the UE 115-a may transmit, and the wireless device 205 may receive, the response message 225-a responsive to one or more of the reference signals 215-a, responsive to the OOK signal 220-a, or responsive to both.
[0083] Additionally, or alternatively, in some implementations, the wireless device 205 may support a frequency domain-based collision management procedure. For example, the configuration message 210 may indicate that a first resource for reference signal burst transmission may be FDMed with a second resource for OOK signal transmission. The wireless device 205 may transmit, and the UE 115-a may receive, the one or more reference signals 215-a of the reference signal burst via the first resource and one or more OOK signals 220 (e.g., the OOK signal 220-a) via the second resource in accordance with the configuration message 210 (e.g., with a periodicity of 320 ms) , where the first resource and the second resource are FDMed, as described in more detail with reference to FIG. 5.
[0084] In some examples, the frequency domain-based collision management procedure may result in persistent time domain collisions between the one or more reference signals 215-a and the OOK signal 220-a. In some examples, when a subcarrier spacing is different for the OOK signal 220-a and the one or more reference signals 215-a, inter-numerology interference can occur, resulting in reduced reliability and efficiency of wireless communications. To mitigate such interference, in some examples, a subcarrier spacing may be the same for the OOK signal 220-a and the one or more reference signals 215-a. Alternatively, one or more other measures may be taken to limit inter-numerology interference when the subcarrier spacing may be different for the OOK signal 220-a and the one or more reference signals 215-a.
[0085] In an example, when a subcarrier spacing is different for the OOK signal 220-a (e.g., LP-SS) and the one or more reference signals 215-a (e.g., SSB) , the reference signal configuration indicated by the configuration message 210 may indicate a guard band between the first resource and the second resource. The guard band (e.g., a gap in the frequency domain) may protect the one or more reference signals 215-a from interference cause by a collision with the OOK signal 220-a. In some examples, the guard band may be preconfigured (e.g., in a standard) . In some examples, the configuration message 210 may indicate a second guard band between another signal (e.g., a PDSCH or PDCCH) and the OOK signal 220-a, as described in more detail with reference to FIG. 6B. In some examples, a downlink PDSCH or PDCCH may be transmitted in the guard band between the one or more reference signals 215-a and the OOK signal 220-a, as described in more detail with reference to FIG. 6A. In some examples, the configuration message 210 may indicate a size of the guard band. In some cases, the size of the guard band may be based on a power boost of the OOK signal 220-a. For example, a relatively large power boost of the OOK signal 220-a may be associated with a relatively large guard band size.
[0086] Additionally, or alternatively, when a subcarrier spacing is different for the OOK signal 220-a (e.g., LP-SS) and the one or more reference signals 215-a (e.g., SSB) , a power spectral density (e.g., an energy per resource element (EPRE) ) of the OOK signal 220-a may be less than or equal to a power spectral density of the one or more reference signals 215-a to reduce inter-numerology interference when the subcarrier spacing may be different for the FDMed OOK signal 220-a and the one or more reference signals 215-a.
[0087] The wireless device 205 may monitor for a response message 225-aresponsive to one or more of the reference signals 215-a, responsive to the OOK signal 220-a, or responsive to both. In some examples, the UE 115-a may transmit, and the wireless device 205 may receive, the response message 225-a responsive to one or more of the reference signals 215-a, responsive to the OOK signal 220-a, or responsive to both.
[0088] Additionally, or alternatively, in some implementations, the wireless device 205 may support a collision management procedure when the UE 115-a may be a LP-WUS. For example, a single paging occasion may include multiple PDCCH monitoring occasions that may be noncontiguous in the time domain. The quantity of PDCCH monitoring occasions may be equal to the quantity of reference signals transmitted in one reference signal burst. A T-F of a paging early indication (PEI) (e.g., via DCI) may be in a corresponding coreset search space (e.g., 1 to 3 symbols in the time domain) . In such a LP-WUS scenario, the time domain-based collision management procedure and the frequency domain-based collision management procedure may be applied to reduce collisions between one or more reference signals and an OOK signal.
[0089] Additionally, or alternatively, in some implementations, the wireless device 205 may support a collision management procedure for A-IoT scenarios (e.g., when signals are aperiodic or semi-periodic) . For example, the wireless device 205 may communicate (e.g., via forward link packets) with a UE 115-b, which may be an energy harvesting device, and the UE 115-b may communicate (e.g., via a backscatter link or backward link) with the UE 115-c, which may be a reader device. Forward link packets may contain hundreds of bits, and the UE 115-b may monitor for aperiodic responses from the reader UE 115-c. Thus, the UE 115-b may contiguously monitor hundreds of symbols.
[0090] In some examples, the wireless device 205 may transmit, and the UE 115-b may receive, control signaling indicating multiple time occasions (e.g., contiguous time occasions, A-IoT occasions) . The control signaling may indicate that a first subset of the multiple time occasions are one or more OOK time occasions and a second subset of the multiple time occasions are one or more reference signal time occasions.
[0091] In some examples, the control signaling may be a single control message 230-a indicating the one or more OOK time occasions and the one or more reference signal time occasions. For example, the control message 230-a may indicate an index of a bitmap that indicates the one or more OOK time occasions and the one or more reference signal time occasions. In some examples, the control signaling may include more than one control message 230. For example, the wireless device 205 may transmit, and the UE 115-b may receive, a first control message 230-a indicating the multiple time occasions and a second control message 230-b indicating the one or more reference signal time occasions. In such examples, the UE 115-b may assume that the remaining time occasions of the multiple time occasions that are not indicated to be reference signal time occasions are OOK time occasions.
[0092] The wireless device 205 may transmit, and the UE 115-b may receive, one or more OOK signals 220 (e.g., OOK signal 220-b) during the one or more OOK time occasions. In some examples, the wireless device 205 may refrain from transmission in one or more time occasions of the one or more OOK time occasions based on two or more reference signal time occasions occurring within a defined time duration, as described in more detail with reference to FIG. 7. The defined time duration may be a quantity of slots and may be indicated via the control signaling (e.g., the control message 230-a or the control message 230-b) .
[0093] The wireless device 205 may transmit, and the UE 115-b may receive, one or more reference signals 215-b during the one or more reference signal time occasions. The wireless device 205 may monitor for a response message 225-b (e.g., a backscattered response) , from the UE 115-b, responsive to the one or more OOK signals 220 (e.g., the OOK signal 220-b) , responsive to the one or more reference signals 215-b, or responsive to both. In some examples, the UE 115-b may transmit, and the wireless device 205 may receive, the response message 225-b responsive to the OOK signal 220-b, responsive to the one or more reference signals 215-b, or responsive to both.
[0094] FIG. 3 shows an example of a resource diagram 300 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The resource diagram 300 may implement or be implemented by one or more aspects of the wireless communications system 100 and the wireless communications system 200 described with reference to FIGs. 1 and 2, respectively. For example, the resource diagram 300 may be implemented by a wireless device 205 (e.g., a network entity 105) and a UE 115 as described with reference to FIGs. 1 and 2 to support a collision management procedure.
[0095] For example, the resource diagram 300 may be utilized during a time domain-based collision management procedure. A wireless device (e.g., the wireless device 205) may transmit (e.g., output) , and a UE (e.g., the UE 115-a) may receive (e.g., obtain) , a first configuration message indicating a first reference signal configuration. The first reference signal configuration may indicate a first reference signal burst 305-a, a reference signal burst duration 310, and a first quantity of reference signals 315 in the first reference signal burst 305-a (e.g., 8 reference signals) . In some examples, the first configuration message may indicate that a portion of the reference signal burst duration 310 is available for transmission of a first OOK signal 320 in the reference signal burst 305-a (e.g., a portion that is non-overlapping with the reference signals 315) . The first reference signal configuration may identify a first OOK signal length 325-a (e.g., 14 OFDM symbols) . The wireless device may transmit, and the UE may receive the reference signals 315 and the OOK signal 320 in the first reference signal burst 305-a in accordance with the first reference signal configuration indicated by the first configuration message (e.g., with the first reference signal burst duration 310 and the first OOK signal length 325-a) .
[0096] In some examples, the wireless device (e.g., the wireless device 205) may transmit, and the UE (e.g., the UE 115-a) may receive, a second configuration message indicating a second reference signal configuration. The second reference signal configuration may indicate a second reference signal burst 305-b, a second reference signal burst duration 310, and a second quantity of reference signals 315 in the second reference signal burst 305-b (e.g., 6 reference signals) . In some examples, the second configuration message may indicate that a portion of the reference signal burst duration 310 is available for transmission of a second OOK signal 320 in the reference signal burst 305-b (e.g., a portion that is non-overlapping with the reference signals 315) . The second reference signal configuration may identify a second OOK signal length 325-b (e.g., 28 OFDM symbols) . The wireless device may transmit, and the UE may receive the reference signals 315 and the OOK signal 320 in the second reference signal burst 305-b in accordance with the second reference signal configuration indicated by the second configuration message (e.g., with the second reference signal burst duration 310 and the second OOK signal length 325-b) .
[0097] In some examples, the second configuration message may indicate a reduction in the quantity of reference signals 315 in the reference signal burst 305-b relative to the quantity of reference signals 315 in the reference signal burst 305-aindicated by the first configuration message. In some examples, the second configuration message may indicate an absolute quantity of reference signals 315 (e.g., 6 reference signals) , while in other examples the second configuration message may indicate a relative quantity of reference signals 315 relative to the second configuration message (e.g., 2 reference signals 315, as in 2 reference signals 315 fewer than the quantity of reference signals 315 indicated by the first configuration message) . Additionally, or alternatively, the second configuration message may indicate a change to the OOK signal length 325-b relative to the OOK signal length 325-a indicated by the first configuration message. In some examples, the second configuration message may indicate an absolute OOK signal length 325-b (e.g., 28 OFDM symbols) , while in other examples the second configuration message may indicate a relative OOK signal length 325-b relative to the second configuration message (e.g., 14 more OFDM symbols than the first OOK signal length 325-a, or double the first OOK signal length 325-a indicated by the first configuration message) . In some examples, the OOK signal length 325-a may be the same as the OOK signal length 325-b, as indicated by the second configuration message.
[0098] By reducing the quantity of reference signals 315 transmitted in the reference signal burst 305-b, the wireless device may reduce or prevent collisions between the reference signals 315 and the OOK signal 320, improving reliability and efficiency of wireless communications with the UE 115.
[0099] In some examples, the second configuration message (e.g., the second reference signal configuration) may indicate a reduction in the OOK signal length 325-b and a reduction in the OOK signal periodicity, as described in more detail with reference to FIG. 4.
[0100] FIG. 4 shows an example of a resource diagram 400 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The resource diagram 400 may implement or be implemented by one or more aspects of the wireless communications system 100 and the wireless communications system 200 described with reference to FIGs. 1 and 2, respectively. For example, the resource diagram 400 may be implemented by a wireless device 205 (e.g., a network entity 105) and a UE 115 as described with reference to FIGs. 1 and 2 to support a collision management procedure.
[0101] For example, the resource diagram 400 may be utilized during a time domain-based collision management procedure. A wireless device (e.g., the wireless device 205) may transmit (e.g., output) , and a UE (e.g., the UE 115-a) may receive (e.g., obtain) , a first configuration message indicating a first reference signal configuration. The first reference signal configuration may indicate a first set of reference signal bursts 405-a, a first reference signal burst duration, and a first quantity of reference signals 415 in the reference signal burst 405-a (e.g., 6 reference signals) . In some examples, the first configuration message may indicate that a portion of the reference signal burst duration is available for transmission of a first OOK signal 420 in the reference signal burst 405-a (e.g., a portion that is non-overlapping with the reference signals 415) . The first reference signal configuration may identify a first OOK signal length 425-a (e.g., 28 OFDM symbols) and a first OOK signal periodicity 410-a (e.g., 320 ms) . The wireless device may transmit, and the UE may receive the reference signals 415 and the OOK signal 420 in the first reference signal burst 405-a in accordance with the first reference signal configuration indicated by the first configuration message (e.g., with the first OOK signal periodicity 410-a and the first OOK signal length 425-a) . The wireless device may transmit, and the UE may receive the reference signals 415 and the OOK signal 420 in the first set of reference signal bursts 405-a in accordance with the first reference signal configuration indicated by the first configuration message (e.g., with the first OOK signal length 425-a and the first OOK signal periodicity 410-a) .
[0102] In some examples, the wireless device (e.g., the wireless device 205) may transmit, and the UE (e.g., the UE 115-a) may receive, a second configuration message indicating a second reference signal configuration. The second reference signal configuration may indicate a second set of reference signal bursts 405-b, a second reference signal burst duration, and a second quantity of reference signals 415 in the second reference signal burst 405-b (e.g., 8 reference signals) . In some examples, the second reference signal burst duration may be the same as the first reference signal burst duration, as indicated by the second configuration message. In some examples, the second configuration message may indicate that a portion of the reference signal burst duration is available for transmission of a second OOK signal 420 in the reference signal burst 405-b (e.g., a portion that is non-overlapping with the reference signals 415) . The second reference signal configuration may identify a second OOK signal length 425-b (e.g., 14 OFDM symbols) and a second OOK signal periodicity 410-b (e.g., 160 ms) . The wireless device may transmit, and the UE may receive the reference signals 415 and the OOK signal 420 in the second reference signal burst 405-b in accordance with the second reference signal configuration indicated by the second configuration message (e.g., with the second OOK signal periodicity 410-b and the second OOK signal length 325-b) . The wireless device may transmit, and the UE may receive the reference signals 415 and the OOK signal 420 in the second set of reference signal bursts 405-b in accordance with the second reference signal configuration indicated by the second configuration message (e.g., with the second OOK signal length 425-b and the second OOK signal periodicity 410-b) .
[0103] In some examples, the second configuration message may indicate a reduction in the OOK signal length 425-b relative to the OOK signal length 425-a, a reduction in the OOK signal periodicity 410-b relative to the OOK signal periodicity 410-a, or both. In some examples, the second configuration message may indicate an absolute OOK signal length 425-b (e.g., 14 OFDM symbols) , while in other examples the second configuration message may indicate a relative OOK signal length 425-b relative to the second configuration message (e.g., 14 fewer OFDM symbols than the first OOK signal length 425-a, or half the first OOK signal length 425-a indicated by the first configuration message) . Additionally, or alternatively, the second configuration message may indicate an absolute OOK periodicity 410-b (e.g., 160 ms) , while in other examples the second configuration message may indicate a relative OOK periodicity 410-b relative to the second configuration message (e.g., 160 ms fewer than the first OOK periodicity 410-a, or half the quantity of ms indicated by the first configuration message) .
[0104] Additionally, or alternatively, the second configuration message may indicate an index of a lookup table (e.g., Table 1 described with reference to FIG. 2) that indicates both the OOK signal length 425-b and the OOK signal periodicity 410-b. In one case, the second configuration message may indicate the index ‘10, ’ indicating that the OOK signal length 425-b is 14 OFDM symbols and the OOK signal periodicity 410-b is 160 ms. In some examples, the lookup table may be RRC configured, while in other examples the lookup table may be predefined (e.g., in a standard) and the second configuration message (e.g., an RRC message) may indicate the index (e.g., a row index) of the lookup table. In some examples (e.g., because the signaling overhead may be small) , the OOK signal 420 payload may indicate the reduced OOK signal length 425-b and the reduced OOK signal periodicity 410-b (e.g., by indicating an index of the lookup table) .
[0105] By reducing the OOK signal length 425-b and the OOK signal periodicity 410-b (e.g., increasing the OOK signal density in the time domain) , the wireless device may reduce or prevent collisions between the reference signals 415 and the OOK signal 420, improving reliability and efficiency of wireless communications with the UE 115.
[0106] FIG. 5 shows an example of a resource diagram 500 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The resource diagram 500 may implement or be implemented by one or more aspects of the wireless communications system 100 and the wireless communications system 200 described with reference to FIGs. 1 and 2, respectively. For example, the resource diagram 500 may be implemented by a wireless device 205 (e.g., a network entity 105) and a UE 115 as described with reference to FIGs. 1 and 2 to support a collision management procedure.
[0107] For example, the resource diagram 500 may be utilized during a frequency domain-based collision management procedure. A wireless device (e.g., the wireless device 205) may transmit (e.g., output) , and a UE (e.g., the UE 115-a) may receive (e.g., obtain) , a configuration message indicating a reference signal configuration. In some examples, the configuration message may indicate that a first resource 505-a for transmission of a reference signal burst set 515 may be FDMed with a second resource 505-b for transmission of an OOK signal set 520. In some examples, the configuration message may indicate a periodicity 510 (e.g., an OOK signal periodicity, a reference signal burst periodicity, or both) . The wireless device may transmit, and the UE may receive, one or more reference signals of the reference signal burst set 515 via the first resource 505-a and one or more OOK signals of the OOK signal set 520 via the second resource 505-b in accordance with the configuration message (e.g., with a periodicity 510 of 320 ms) , where the first resource 505-a and the second resource 505-b are FDMed, as described in more detail with reference to FIG. 2.
[0108] In some examples, the frequency domain-based collision management procedure may result in persistent time domain collisions between the one or more reference signals of the reference signal burst set 515 and one or more OOK signals of the OOK signal set 520. In some examples, when a subcarrier spacing is different for the OOK signal set 520 and the reference signal burst set 515, inter-numerology interference can occur, resulting in reduced reliability and efficiency of wireless communications. To mitigate such interference, in some examples, a subcarrier spacing may be the same for the OOK signal set 520 and the reference signal burst set 515. Alternatively, one or more other measures may be taken to limit inter-numerology interference when the subcarrier spacing may be different for the OOK signal set 520 and the reference signal burst set 515, as described in more detail with reference to FIGs. 6A and 6B.
[0109] FIGs. 6A and 6B show examples of resource diagrams 601 and 602 that support collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The resource diagrams 601 and 602 may implement or be implemented by one or more aspects of the wireless communications system 100 and the wireless communications system 200 described with reference to FIGs. 1 and 2, respectively. For example, the resource diagrams 601 and 602 may be implemented by a wireless device 205 (e.g., a network entity 105) and a UE 115 as described with reference to FIGs. 1 and 2 to support a collision management procedure.
[0110] For example, the resource diagrams 601 and 602 may be utilized during a frequency domain-based collision management procedure. A wireless device (e.g., the wireless device 205) may transmit (e.g., output) , and a UE (e.g., the UE 115-a) may receive (e.g., obtain) , a configuration message indicating a reference signal configuration. In some examples, the configuration message may indicate that a first resource for transmission of one or more reference signals 615 of a reference signal burst may be FDMed with a second resource for transmission of an OOK signal 620. The wireless device may transmit, and the UE may receive, one or more reference signals 615 of the reference signal burst via the first resource and one or more OOK signals 620 via the second resource in accordance with the configuration message, where the first resource and the second resource are FDMed, as described in more detail with reference to FIG. 5.
[0111] In some examples, the frequency domain-based collision management procedure may result in persistent time domain collisions between the one or more reference signals 615 and the OOK signal 620. In some examples, when a subcarrier spacing is different for the OOK signal 620 and the one or more reference signals 615, inter-numerology interference can occur, resulting in reduced reliability and efficiency of wireless communications. To mitigate such interference, in some examples, a subcarrier spacing may be the same for the OOK signal 620 and the one or more reference signals 615. Alternatively, one or more other measures may be taken to limit inter-numerology interference when the subcarrier spacing may be different for the OOK signal 620 and the one or more reference signals 615.
[0112] In an example, when a subcarrier spacing is different for the OOK signal 620 and the one or more reference signals 615, the reference signal configuration indicated by the configuration message may indicate a guard band 605-a between the first resource and the second resource, as illustrated in resource diagram 601. The guard band 605-a (e.g., a gap in the frequency domain) may protect the one or more reference signals 615-a from interference cause by a collision with the OOK signal 620-a (rather than protecting the OOK signal 620-a for reception by an OOK receiver) . Additionally, or alternatively, the guard band 605-a may be preconfigured (e.g., in a standard) . In some examples, another signal (e.g., a PDSCH 610-a, a PDCCH, or another downlink OFDM signal that may cause less interference than the OOK signal 620-a) may be transmitted in the guard band 605-a between the one or more reference signals 615-a and the OOK signal 620-a (e.g., such that the guard band is not empty) . In some examples, the guard band 605-a may be for protection of the reference signal 615-a (e.g., for SSB protection) , different from a guard band for reception of an OOK signal (e.g., size is different; only single side guard band, PDCCH, PDSCH, etc., may be transmitted in the guard band) . In some examples, the configuration message may indicate a size of the guard band 605-a (or one or more other guard bands 605) . In some cases, the size of the guard band 605-a may be based on a power boost of the OOK signal 620-a. For example, a relatively large power boost of the OOK signal 620-a (e.g., LP-SS) may be associated with a relatively large size of the guard band 605-a.
[0113] Additionally, or alternatively, when a subcarrier spacing is different for the OOK signal 620 and the one or more reference signals 615, a power spectral density (e.g., an EPRE) of the OOK signal 620-a may be less than or equal to a power spectral density of the one or more reference signals 615-a (e.g., a power difference between the OOK signal 620-a and the one or more reference signals 615-a may be reduced by a quantity of dB or canceled) to reduce inter-numerology interference when the subcarrier spacing may be different for the FDMed OOK signal 620-a and the one or more reference signals 615-a. In some examples, the configuration message may indicate a guard band 605 between another signal (e.g., a PDSCH or PDCCH) and the OOK signal 620. For example, as illustrated in resource diagram 602, the configuration message may indicate a first guard band 605-b between the PDSCH 610-b and the OOK signal 620-b, and may indicate a second guard band 605-c between the PDSCH 610-c and the OOK signal 620-b, in scenarios where a subcarrier spacing is different for the OOK signal 620 and the one or more reference signals 615. In some examples, the guard band 605-b or the guard band 605-c may aid with reception of the OOK signal 620, where such guard bands may be used to assist with reception by a base band low pass filter (BB-LPF) of an OOK receiver.
[0114] By introducing one or more guard bands 605 between the OOK signals 620 and the one or more other signals (e.g., the PDSCHs 610 and the reference signals 615) , the wireless device may reduce interference and improve reliability and efficiency of wireless communications.
[0115] FIG. 7 shows an example of a resource diagram 700 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The resource diagram 700 may implement or be implemented by one or more aspects of the wireless communications system 100 and the wireless communications system 200 described with reference to FIGs. 1 and 2, respectively. For example, the resource diagram 700 may be implemented by a wireless device 205 (e.g., a network entity 105) and a UE 115 as described with reference to FIGs. 1 and 2 to support a collision management procedure.
[0116] For example, the resource diagram 700 may be utilized during a collision management procedure for A-IoT scenarios, which may be an extension of the collision management procedure described for the OOK signal (e.g., LP-SS) and the one or more reference signals described with reference to FIGs. 2 through 6. The collision management procedure for A-IoT scenarios may differ from the LP-SS or LP-WUS scenarios, which are mainly periodical. In contrast, the A-IoT scenario may involve aperiodic signals or semi-periodic symbols. For example, a wireless device may communicate (e.g., via forward link packets) with an energy harvesting UE (e.g., an energy harvesting device, or an A-IoT device) . Additionally, or alternatively, the UE may communicate (e.g., via a backscatter link or backward link) with a reader UE (e.g., a reader device) . Forward link packets may contain up to hundreds of bits, and the energy harvesting UE (e.g., a device type C) may monitor (e.g., wait) for one or more aperiodic responses from the reader UE. Thus, the energy harvesting UE may contiguously monitor hundreds of symbols.
[0117] In some implementations, the wireless device may implement a time domain-based collision management procedure (e.g., a time domain solution) based on the time domain-based collision management procedure (e.g., the time domain solution) for LP-SS and LP-WUS described with reference to FIGs. 1 through 6. For example, the wireless device may configure the energy harvesting UE (e.g., an A-IoT device) with A-IoT occasions, with some symbols excluded (e.g., occupied by important NR or LTE reference signals) That is, the wireless device may transmit, and the energy harvesting UE may receive, control signaling indicating multiple time occasions (e.g., contiguous time occasions, A-IoT occasions) . The control signaling may indicate that a first subset of the multiple time occasions are one or more OOK time occasions and a second subset of the multiple time occasions are one or more reference signal time occasions.
[0118] In some examples (e.g., a first option) , the wireless device may pick out specific occasions (e.g., occupied by a reference signal, such as an SSB) and configure the remaining occasions to the energy harvesting UE (e.g., A-IoT device) . That is, the control signaling may be a single control message indicating the one or more OOK time occasions and the one or more reference signal time occasions. For example, the control message may indicate an index of a bitmap that indicates the one or more OOK time occasions and the one or more reference signal time occasions. The wireless device may reuse the solutions (e.g., the collision management procedures) described with reference to FIGs. 1 through 6, such as a single configuration message and a bitmap or lookup table to indicate a length of an OOK signal and a periodicity of the OOK signal.
[0119] In some examples (e.g., a second option) , the wireless device may configure the energy harvesting device with contiguous occasions and may configure a subset of those occasions (e.g., occasions occupied by a reference signal such as an SSB) to be picked out. That is, the control signaling may include more than one control message (e.g., two separate signaling) . For example, the wireless device may transmit, and the energy harvesting UE may receive, a first control message indicating the multiple time occasions and a second control message (e.g., a new time domain pattern configuration) indicating the one or more reference signal time occasions. In such examples, the energy harvesting UE may assume that the remaining time occasions of the multiple time occasions that are not indicated to be reference signal time occasions are OOK time occasions.
[0120] The wireless device may transmit, and the energy harvesting UE may receive, one or more OOK signals 720 (e.g., the OOK signals 720-a, 720-b, and 720-c) during the one or more OOK time occasions and may transmit one or more reference signals 715 (e.g., the reference signals 715-a and 715-b) during the one or more reference signal time occasions.
[0121] In some examples, if two important reference signals are close together in the time domain, the wireless device may skip occasions between the two important reference signals. The two reference signals being close together may be fined by X quantity of slots (e.g., 2 slots) , such that if the distance between the two reference signals (e.g., two SSBs) is less than or equal to X slots, the slots between the two SSBs may be skipped by the OOK signal. That is, the control signaling may define a time duration 725 (e.g., a quantity of slots, such as 2 slots) . In some other examples, the time duration 725 may be predefined (e.g., in a standard, or via other signaling) . The wireless device may refrain from transmission in one or more time occasions of the one or more OOK time occasions based on two or more reference signal time occasions occurring within the defined time duration 725. For example, the wireless device may refrain from transmitting the OOK signal 720-b based on the reference signal 715-a and the reference signal 715-b occurring within the time duration 725 (e.g., the distance between the reference signal 715-a and the reference signal 715-b is less than or equal to the quantity of slots indicated by the time duration 725) .
[0122] The wireless device may monitor for a response message from the energy harvesting UE (e.g., a backscattered response message) , responsive to the one or more OOK signals 720 (e.g., the OOK signals 720-a and 720-b) , responsive to the one or more reference signals 715 (e.g., the reference signals 715-a and 715-b) , or responsive to both. In some examples, the energy harvesting UE may transmit, and the wireless device may receive, the response message responsive to the OOK signal 720, responsive to the one or more reference signals 715, or responsive to both.
[0123] By refraining from transmitting the OOK signal 720, the wireless device may reduce or prevent collisions between the OOK signals 720 and the reference signals 715. The energy harvesting UE may also monitor fewer resources. Thus, wireless communications between the wireless device and the energy harvesting UE may be more efficient and reliable.
[0124] FIG. 8 shows an example of a process flow 800 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. In some examples, the process flow 800 may be implemented by, or may implement aspects of, wireless communications systems 100 and 200 and resource diagrams 300, 400, 500, 601, 602, and 700. For example, the process flow 800 includes a wireless device 805 (which may be an example of a network entity 105) and a UE 115-d, which may be examples of the corresponding devices described with reference to FIGs. 1 and 2. Following the process flow 800, the wireless device 805 may avoid collisions between transmitted OOK signals and reference signals. Alternative examples of the following may be implemented, where some steps are performed in a different order than described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added. Although the UE 115-d and the wireless device 805 are shown performing the operations of the process flow 800, some aspects of some operations may also be performed by one or more other wireless devices.
[0125] In some examples, the wireless device 805 and the UE 115-d may implement a time domain-based collision management procedure. For example, at 810, the wireless device 805 may transmit (e.g., output) , and the UE 115-d may receive (e.g., obtain) , a configuration message indicating a reference signal configuration. The reference signal configuration may identify a length of an OOK signal, a periodicity of an OOK signal, or both. In some examples, the configuration message may indicate an index of a lookup table. The index of the lookup table may indicate both a length of the OOK signal and a periodicity of the OOK signal. The configuration message may indicate a reduction in a quantity of reference signals in a reference signal burst relative to a second reference signal configuration. That is, the second reference signal configuration may indicate a second quantity of reference signals and the first reference signal configuration may indicate a first quantity of reference signals, where the configuration message may indicate the first quantity of reference signals and where the first quantity of reference signals is an absolute quantity less than or equal to the second quantity of reference signals. Additionally, or alternatively, the configuration message may indicate a relative quantity of reference signals. That is, if the second reference signal configuration indicates eight reference signals and the configuration message indicates a relative quantity of reference signals of two, the quantity of actually transmitted reference signals may be six (e.g., two less than eight) .
[0126] In some examples, the configuration message may indicate a reduction in the length of the OOK signal, the periodicity of the OOK signal, or both, relative to the second reference signal configuration. The configuration message may indicate an absolute length of the OOK signal that is less than or equal to a length of an OOK signal indicated by the second reference signal configuration, a relative length of the OOK signal relative to the second reference signal configuration, an absolute periodicity of the OOK signal that is less than or equal to a periodicity of an OOK signal indicated by the second reference signal configuration, a relative periodicity of the OOK signal relative to a second reference signal configuration, or any combination thereof.
[0127] At 815, the wireless device 805 may transmit, and the UE 115-d may receive, multiple reference signals of a reference signal burst in accordance with the reference signal configuration. In some examples, the reference signal configuration transmitted at 805 may indicate a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. The portion of the duration of the reference signal burst available for transmission of the OOK signal may be non-overlapping with the multiple reference signals. In some examples, the multiple reference signals may include an SSB, a CRS, a TRS, a PRS, a CSI-RS, or a combination thereof. The OOK signal may be one of an SS, a WUS, a forward link SS, or a forward link packet.
[0128] At 820, the wireless device 805 may transmit, and the UE 115-d may receive, an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission.
[0129] At 825, the wireless device 805 may monitor for a message responsive to one or more of the multiple reference signals of the reference signal burst, responsive to the OOK signal, or responsive to both.
[0130] At 830, the UE 115-d may transmit (e.g., output) , and the wireless device 805 may receive (e.g., obtain) , a response message responsive to one or more of the multiple reference signals of the reference signal burst, responsive to the OOK signal, or responsive to both.
[0131] In some examples, the wireless device 805 and the UE 115-d may implement a frequency domain-based collision management procedure. For example, at 835, the wireless device 805 may transmit, and the UE 115-d may receive, via a first resource, multiple reference signals of a reference signal burst in accordance with a reference signal configuration (e.g., the reference signal configuration transmitted via the configuration message at 810) . The reference signal configuration may indicate that the first resource for reference signal burst transmission is FDMed with a second resource for OOK signal transmission.
[0132] At 840, the wireless device 805 may transmit, and the UE 115-d may receive, an OOK signal via the second resource. In some examples, a subcarrier spacing may be the same for the OOK signal and the one or more reference signals of the multiple reference signals. In some other examples, the subcarrier spacing may be different for the OOK signal and the one or more reference signals of the multiple reference signals. In those cases, the reference signal configuration may indicate a guard band between the first resource and the second resource. A size of the guard band may be based on a power boost of the OOK signal (e.g., a relatively large power boost may be associated with a relatively large guard band size) . In some examples, a power spectral density (e.g., an EPRE) of the OOK signal may be less than or equal to a power spectral density (e.g., EPRE) of the one or more reference signals of the multiple reference signals.
[0133] At 845, the wireless device 805 may monitor for a message responsive to one or more reference signals of the multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0134] At 850, the UE 115-d may transmit, and the wireless device 805 may receive, a response message responsive to one or more reference signals of the multiple reference signals of the reference signal burst, or responsive to the OOK signal, or both.
[0135] FIG. 9 shows an example of a process flow 900 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. In some examples, the process flow 900 may be implemented by, or may implement aspects of, wireless communications systems 100 and 200 and resource diagrams 300, 400, 500, 601, 602, and 700. For example, the process flow 900 includes a wireless device 905 (e.g., a network entity 105) and a UE 115-e (e.g., an energy harvesting device) , which may be examples of the corresponding devices described with reference to FIGs. 1, 2, and 8. Following the process flow 900, the wireless device 905 may avoid collisions between transmitted OOK signals and reference signals. Alternative examples of the following may be implemented, where some steps are performed in a different order than described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added. Although the UE 115-e and the wireless device 905 are shown performing the operations of the process flow 900, some aspects of some operations may also be performed by one or more other wireless devices.
[0136] In some examples, the wireless device 905 and the UE 115-e may implement a collision management procedure in an A-IoT scenario. For example, at 910, the wireless device 905 may transmit (e.g., output) , and the UE 115-e (which may be an A-IoT device or an energy harvesting device) may receive (e.g., obtain) , control signaling indicating multiple time occasions (e.g., contiguous time occasions) . The control signaling may indicate that a first subset of the multiple time occasions are one or more OOK time occasions, and a second subset of the multiple time occasions are one or more reference signal time occasions. In some examples, the control signaling may be a single control message indicating the one or more OOK time occasions and the one or more reference signal time occasions. In some examples, the control signaling may include more than one control message. For example, the wireless device 905 may transmit, and the UE 115-e may receive, a first control message indicating the multiple time occasions and a second control message indicating the one or more reference signal time occasions. In such examples, the UE 115-e may assume that the remaining time occasions of the multiple time occasions that are not reference signal time occasions are OOK time occasions.
[0137] At 915, the wireless device 905 may transmit, and the UE 115-e may receive, one or more reference signal signals during the one or more reference signal time occasions.
[0138] At 920, the wireless device 905 may transmit, and the UE 115-e may receive, one or more OOK signals during the one or more OOK time occasions. In some examples, the wireless device 905 may refrain from transmitting in one or more time occasions of the one or more OOK time occasions based on two or more reference signal time occasions occurring within a defined time duration. The defined time duration may be a quantity of slots and may be indicated via the control signaling at 905.
[0139] At 925, the wireless device 905 may monitor for a response message (e.g., a backscattered response message) , from the UE 115-e, responsive to the one or more OOK signals, responsive to the one or more reference signals, or responsive to both.
[0140] At 930, the UE 115-e may transmit (e.g., output) , and the wireless device 905 may receive (e.g., obtain) , a response message responsive to the one or more OOK signals, responsive to the one or more reference signals, or responsive to both.
[0141] FIG. 10 shows a block diagram 1000 of a device 1005 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of aspects of a wireless device as described herein. The device 1005 may include an input component 1010, an output component 1015, and an action response component 1020. The device 1005, or one or more components of the device 1005 (e.g., the input component 1010, the output component 1015, the action response component 1020) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0142] The input component 1010 may manage input signals for the apparatus 1005. For example, the input component 1010 may identify input signals based on an interaction with a modem, a keyboard, a mouse, a touchscreen, or a similar device. These input signals may be associated with user input or processing at other components or devices. In some cases, the input component 1010 may utilize an operating system such as or another known operating system to handle input signals. The input component 1010 may send aspects of these input signals to other components of the apparatus 1005 for processing. For example, the input component 1010 may transmit input signals to the {PRIMARY_MODULE} 1020 to support collision management for OOK signals and reference signals. In some cases, the input component 1010 may be a component of an I / O controller 1310 as described with reference to FIG. 13.
[0143] The output component 1015 may manage output signals for the apparatus 1005. For example, the output component 1015 may receive signals from other components of the apparatus 1005, such as the {PRIMARY_MODULE} 1020, and may transmit these signals to other components or devices. In some specific examples, the output component 1015 may transmit output signals for display in a user interface, for storage in a database or data store, for further processing at a server or server cluster, or for any other processes at any number of devices or systems. In some cases, the output component 1015 may be a component of an I / O controller 1310 as described with reference to FIG. 13.
[0144] The action response component 1020, the input component 1010, the output component 1015, or various combinations or components thereof may be examples of means for performing various aspects of collision management for OOK signals and reference signals as described herein. For example, the action response component 1020, the input component 1010, the output component 1015, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0145] In some examples, the action response component 1020, the input component 1010, the output component 1015, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of 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, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0146] Additionally, or alternatively, the action response component 1020, the input component 1010, the output component 1015, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the action response component 1020, the input component 1010, the output component 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, individually or collectively, a means for performing the functions described in the present disclosure) .
[0147] In some examples, the action response component 1020 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the input component 1010, the output component 1015, or both. For example, the action response component 1020 may receive information from the input component 1010, send information to the output component 1015, or be integrated in combination with the input component 1010, the output component 1015, or both to obtain information, output information, or perform various other operations as described herein.
[0148] The action response component 1020 may support wireless communications in accordance with examples as disclosed herein. For example, the action response component 1020 is capable of, configured to, or operable to support a means for transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. The action response component 1020 is capable of, configured to, or operable to support a means for transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission. The action response component 1020 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0149] Additionally, or alternatively, the action response component 1020 may support wireless communications in accordance with examples as disclosed herein. For example, the action response component 1020 is capable of, configured to, or operable to support a means for transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for OOK signal transmission. The action response component 1020 is capable of, configured to, or operable to support a means for transmitting an OOK signal via the second resource. The action response component 1020 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0150] Additionally, or alternatively, the action response component 1020 may support wireless communications in accordance with examples as disclosed herein. For example, the action response component 1020 is capable of, configured to, or operable to support a means for transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions. The action response component 1020 is capable of, configured to, or operable to support a means for transmitting one or more OOK signals during the one or more OOK time occasions. The action response component 1020 is capable of, configured to, or operable to support a means for transmitting one or more reference signals during the one or more reference signal time occasions. The action response component 1020 is capable of, configured to, or operable to support a means for monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0151] By including or configuring the action response component 1020 in accordance with examples as described herein, the device 1005 (e.g., at least one processor controlling or otherwise coupled with the input component 1010, the output component 1015, the action response component 1020, or a combination thereof) may support techniques for more efficient utilization of communication resources.
[0152] FIG. 11 shows a block diagram 1100 of a device 1105 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of aspects of a device 1005 or a UE 115 as described herein. The device 1105 may include an input component 1110, an output component 1115, and an action response component 1120. The device 1105, or one or more components of the device 1105 (e.g., the input component 1110, the output component 1115, the action response component 1120) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0153] The input component 1110 may manage input signals for the apparatus 1105. For example, the input component 1110 may identify input signals based on an interaction with a modem, a keyboard, a mouse, a touchscreen, or a similar device. These input signals may be associated with user input or processing at other components or devices. In some cases, the input component 1110 may utilize an operating system such as or another known operating system to handle input signals. The input component 1110 may send aspects of these input signals to other components of the apparatus 1105 for processing. For example, the input component 1110 may transmit input signals to the {PRIMARY_MODULE} 1120 to support collision management for OOK signals and reference signals. In some cases, the input component 1110 may be a component of an I / O controller 1310 as described with reference to FIG. 13.
[0154] The output component 1115 may manage output signals for the apparatus 1105. For example, the output component 1115 may receive signals from other components of the apparatus 1105, such as the {PRIMARY_MODULE} 1120, and may transmit these signals to other components or devices. In some specific examples, the output component 1115 may transmit output signals for display in a user interface, for storage in a database or data store, for further processing at a server or server cluster, or for any other processes at any number of devices or systems. In some cases, the output component 1115 may be a component of an I / O controller 1310 as described with reference to FIG. 13.
[0155] The device 1105, or various components thereof, may be an example of means for performing various aspects of collision management for OOK signals and reference signals as described herein. For example, the action response component 1120 may include a reference signal component 1125, a OOK signal component 1130, a response component 1135, a control signaling component 1140, or any combination thereof. The action response component 1120 may be an example of aspects of an action response component 1020 as described herein. In some examples, the action response component 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 input component 1110, the output component 1115, or both. For example, the action response component 1120 may receive information from the input component 1110, send information to the output component 1115, or be integrated in combination with the input component 1110, the output component 1115, or both to obtain information, output information, or perform various other operations as described herein.
[0156] The action response component 1120 may support wireless communications in accordance with examples as disclosed herein. The reference signal component 1125 is capable of, configured to, or operable to support a means for transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. The OOK signal component 1130 is capable of, configured to, or operable to support a means for transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission. The response component 1135 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0157] Additionally, or alternatively, the action response component 1120 may support wireless communications in accordance with examples as disclosed herein. The reference signal component 1125 is capable of, configured to, or operable to support a means for transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for OOK signal transmission. The OOK signal component 1130 is capable of, configured to, or operable to support a means for transmitting an OOK signal via the second resource. The response component 1135 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0158] Additionally, or alternatively, the action response component 1120 may support wireless communications in accordance with examples as disclosed herein. The control signaling component 1140 is capable of, configured to, or operable to support a means for transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions. The OOK signal component 1130 is capable of, configured to, or operable to support a means for transmitting one or more OOK signals during the one or more OOK time occasions. The reference signal component 1125 is capable of, configured to, or operable to support a means for transmitting one or more reference signals during the one or more reference signal time occasions. The response component 1135 is capable of, configured to, or operable to support a means for monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0159] FIG. 12 shows a block diagram 1200 of an action response component 1220 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The action response component 1220 may be an example of aspects of an action response component 1020, an action response component 1120, or both, as described herein. The action response component 1220, or various components thereof, may be an example of means for performing various aspects of collision management for OOK signals and reference signals as described herein. For example, the action response component 1220 may include a reference signal component 1225, a OOK signal component 1230, a response component 1235, a control signaling component 1240, a configuration message component 1245, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0160] The action response component 1220 may support wireless communications in accordance with examples as disclosed herein. The reference signal component 1225 is capable of, configured to, or operable to support a means for transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. The OOK signal component 1230 is capable of, configured to, or operable to support a means for transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission. The response component 1235 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0161] In some examples, the configuration message component 1245 is capable of, configured to, or operable to support a means for transmitting a configuration message, the configuration message indicating the reference signal configuration and identifying a length of the OOK signal, a periodicity of the OOK signal, or both.
[0162] In some examples, the configuration message indicates an index of a lookup table. In some examples, the index of the lookup table indicates both the length of the OOK signal and the periodicity of the OOK signal.
[0163] In some examples, the configuration message indicates a reduction in a quantity of reference signals in the reference signal burst relative to a second reference signal configuration.
[0164] In some examples, the configuration message indicates a reduction in the length of the OOK signal, the periodicity of the OOK signal, or both, relative to a second reference signal configuration.
[0165] In some examples, the portion of the duration of the reference signal burst available for transmission of the OOK signal is non-overlapping with the set of multiple reference signals.
[0166] In some examples, the set of multiple reference signals include an SSB, a CRS, a TRS, a PRS, a CSI-RS, or a combination thereof.
[0167] In some examples, the OOK signal is one of an SS, a WUS, a forward link synchronization signal, or a forward link packet.
[0168] Additionally, or alternatively, the action response component 1220 may support wireless communications in accordance with examples as disclosed herein. In some examples, the reference signal component 1225 is capable of, configured to, or operable to support a means for transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for OOK signal transmission. In some examples, the OOK signal component 1230 is capable of, configured to, or operable to support a means for transmitting an OOK signal via the second resource. In some examples, the response component 1235 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0169] In some examples, a subcarrier spacing is the same for the OOK signal and the one or more reference signals of the set of multiple reference signals.
[0170] In some examples, a subcarrier spacing is different for the OOK signal and the one or more reference signals of the set of multiple reference signals.
[0171] In some examples, the reference signal configuration indicates a guard band between the first resource and the second resource.
[0172] In some examples, a size of the guard band is based on a power boost of the OOK signal.
[0173] In some examples, a power spectral density of the OOK signal is less than or equal to a power spectral density of the one or more reference signals of the set of multiple reference signals.
[0174] Additionally, or alternatively, the action response component 1220 may support wireless communications in accordance with examples as disclosed herein. The control signaling component 1240 is capable of, configured to, or operable to support a means for transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions. In some examples, the OOK signal component 1230 is capable of, configured to, or operable to support a means for transmitting one or more OOK signals during the one or more OOK time occasions. In some examples, the reference signal component 1225 is capable of, configured to, or operable to support a means for transmitting one or more reference signals during the one or more reference signal time occasions. In some examples, the response component 1235 is capable of, configured to, or operable to support a means for monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0175] In some examples, to support transmitting the control signaling, the control signaling component 1240 is capable of, configured to, or operable to support a means for transmitting a single control message indicating the one or more OOK time occasions and the one or more reference signal time occasions.
[0176] In some examples, to support transmitting the control signaling, the control signaling component 1240 is capable of, configured to, or operable to support a means for transmitting a first control message indicating the set of multiple time occasions. In some examples, to support transmitting the control signaling, the control signaling component 1240 is capable of, configured to, or operable to support a means for transmitting a second control message indicating the one or more reference signal time occasions.
[0177] In some examples, the set of multiple time occasions are contiguous time occasions.
[0178] In some examples, the OOK signal component 1230 is capable of, configured to, or operable to support a means for refraining from transmission in one or more time occasions of the one or more OOK time occasions based on two or more reference signal time occasions occurring within a defined time duration.
[0179] In some examples, the defined time duration is a quantity of slots.
[0180] FIG. 13 shows a diagram of a system 1300 including a device 1305 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The device 1305 may be an example of or include components of a device 1005, a device 1105, or a wireless device as described herein. The device 1305 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as an action response component 1320, an I / O controller, such as an I / O controller 1310, a database controller 1315, at least one memory 1325, at least one processor 1330, and a database 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) .
[0181] The I / O controller 1310 may manage input signals 1345 and output signals 1350 for the device 1305. The I / O controller 1310 may also manage peripherals not integrated into the device 1305. In some cases, the I / O controller 1310 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1310 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1310 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1310 may be implemented as part of a processor. In some examples, a user may interact with the device 1305 via the I / O controller 1310 or via hardware components controlled by the I / O controller 1310.
[0182] The database controller 1315 may manage data storage and processing in a database 1335. The database 1335 may be external to the device 1305, temporarily or permanently connected to the device 1305, or a data storage component of the device 1305. In some cases, a user may interact with the database controller 1315. In some other cases, the database controller 1315 may operate automatically without user interaction. The database 1335 may be an example of a persistent data store, a single database, a distributed database, multiple distributed databases, a database management system, or an emergency backup database.
[0183] Memory 1325 may include random-access memory (RAM) and ROM. The memory 1325 may store computer-readable, computer-executable software including instructions that, when executed, cause the processor to perform various 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.
[0184] The processor 1330 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 1330 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 1330. The processor 1330 may be configured to execute computer-readable instructions stored in memory 1325 to perform various functions (e.g., functions or tasks supporting collision management for OOK signals and reference signals) .
[0185] The action response component 1320 may support wireless communications in accordance with examples as disclosed herein. For example, the action response component 1320 is capable of, configured to, or operable to support a means for transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. The action response component 1320 is capable of, configured to, or operable to support a means for transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission. The action response component 1320 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0186] Additionally, or alternatively, the action response component 1320 may support wireless communications in accordance with examples as disclosed herein. For example, the action response component 1320 is capable of, configured to, or operable to support a means for transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for OOK signal transmission. The action response component 1320 is capable of, configured to, or operable to support a means for transmitting an OOK signal via the second resource. The action response component 1320 is capable of, configured to, or operable to support a means for monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both.
[0187] Additionally, or alternatively, the action response component 1320 may support wireless communications in accordance with examples as disclosed herein. For example, the action response component 1320 is capable of, configured to, or operable to support a means for transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions. The action response component 1320 is capable of, configured to, or operable to support a means for transmitting one or more OOK signals during the one or more OOK time occasions. The action response component 1320 is capable of, configured to, or operable to support a means for transmitting one or more reference signals during the one or more reference signal time occasions. The action response component 1320 is capable of, configured to, or operable to support a means for monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both.
[0188] By including or configuring the action response component 1320 in accordance with examples as described herein, the device 1305 may support techniques for improved communication reliability, reduced latency, more efficient utilization of communication resources, and improved coordination between devices.
[0189] FIG. 14 shows a flowchart illustrating a method 1400 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The operations of the method 1400 may be implemented by a wireless device or its components as described herein. For example, the operations of the method 1400 may be performed by a wireless device as described with reference to FIGs. 1 through 13. In some examples, a wireless device may execute a set of instructions to control the functional elements of the wireless device to perform the described functions. Additionally, or alternatively, the wireless device may perform aspects of the described functions using special-purpose hardware.
[0190] At 1405, the method may include transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. 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 reference signal component 1225 as described with reference to FIG. 12.
[0191] At 1410, the method may include transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission. 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 OOK signal component 1230 as described with reference to FIG. 12.
[0192] At 1415, the method may include monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both. The operations of 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a response component 1235 as described with reference to FIG. 12.
[0193] FIG. 15 shows a flowchart illustrating a method 1500 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The operations of the method 1500 may be implemented by a wireless device or its components as described herein. For example, the operations of the method 1500 may be performed by a wireless device as described with reference to FIGs. 1 through 13. In some examples, a wireless device may execute a set of instructions to control the functional elements of the wireless device to perform the described functions. Additionally, or alternatively, the wireless device may perform aspects of the described functions using special-purpose hardware.
[0194] At 1505, the method may include transmitting a configuration message, the configuration message indicating the reference signal configuration and identifying a length of the OOK signal, a periodicity of the OOK signal, or both. 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 configuration message component 1245 as described with reference to FIG. 12.
[0195] At 1510, the method may include transmitting a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for OOK signal transmission. 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 reference signal component 1225 as described with reference to FIG. 12.
[0196] At 1515, the method may include transmitting an OOK signal during the portion of the duration of the reference signal burst that is available for OOK signal transmission. 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 a OOK signal component 1230 as described with reference to FIG. 12.
[0197] At 1520, the method may include monitoring for a message responsive to one or more of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both. The operations of 1520 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed by a response component 1235 as described with reference to FIG. 12.
[0198] FIG. 16 shows a flowchart illustrating a method 1600 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The operations of the method 1600 may be implemented by a wireless device or its components as described herein. For example, the operations of the method 1600 may be performed by a wireless device as described with reference to FIGs. 1 through 13. In some examples, a wireless device may execute a set of instructions to control the functional elements of the wireless device to perform the described functions. Additionally, or alternatively, the wireless device may perform aspects of the described functions using special-purpose hardware.
[0199] At 1605, the method may include transmitting, via a first resource, a set of multiple reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for OOK signal transmission. The operations of 1605 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a reference signal component 1225 as described with reference to FIG. 12.
[0200] At 1610, the method may include transmitting an OOK signal via the second resource. The operations of 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by a OOK signal component 1230 as described with reference to FIG. 12.
[0201] At 1615, the method may include monitoring for a message responsive to one or more reference signals of the set of multiple reference signals of the reference signal burst, or responsive to the OOK signal, or responsive to both. The operations of 1615 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed by a response component 1235 as described with reference to FIG. 12.
[0202] FIG. 17 shows a flowchart illustrating a method 1700 that supports collision management for OOK signals and reference signals in accordance with one or more aspects of the present disclosure. The operations of the method 1700 may be implemented by a wireless device or its components as described herein. For example, the operations of the method 1700 may be performed by a wireless device as described with reference to FIGs. 1 through 13. In some examples, a wireless device may execute a set of instructions to control the functional elements of the wireless device to perform the described functions. Additionally, or alternatively, the wireless device may perform aspects of the described functions using special-purpose hardware.
[0203] At 1705, the method may include transmitting, to an energy-harvesting device, control signaling indicating a set of multiple time occasions, the control signaling indicating a first subset of the set of multiple time occasions are one or more OOK time occasions and a second subset of set of multiple time occasions are one or more reference signal time occasions. The operations of 1705 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed by a control signaling component 1240 as described with reference to FIG. 12.
[0204] At 1710, the method may include transmitting one or more OOK signals during the one or more OOK time occasions. The operations of 1710 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed by a OOK signal component 1230 as described with reference to FIG. 12.
[0205] At 1715, the method may include transmitting one or more reference signals during the one or more reference signal time occasions. The operations of 1715 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed by a reference signal component 1225 as described with reference to FIG. 12.
[0206] At 1720, the method may include monitoring for a message, from the energy-harvesting device, responsive to the one or more OOK signals, or responsive to the one or more reference signals, or responsive to both. The operations of 1720 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1720 may be performed by a response component 1235 as described with reference to FIG. 12.
[0207] The following provides an overview of aspects of the present disclosure:
[0208] Aspect 1: A method for wireless communications at a wireless device, comprising: transmitting a plurality of reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for on-off keying signal transmission; transmitting an on-off keying signal during the portion of the duration of the reference signal burst that is available for on-off keying signal transmission; and monitoring for a message responsive to one or more of the plurality of reference signals of the reference signal burst, or responsive to the on-off keying signal, or responsive to both.
[0209] Aspect 2: The method of aspect 1, further comprising: transmitting a configuration message, the configuration message indicating the reference signal configuration and identifying a length of the on-off keying signal, a periodicity of the on-off keying signal, or both.
[0210] Aspect 3: The method of aspect 2, wherein the configuration message indicates an index of a lookup table, the index of the lookup table indicates both the length of the on-off keying signal and the periodicity of the on-off keying signal.
[0211] Aspect 4: The method of any of aspects 2 through 3, wherein the configuration message indicates a reduction in a quantity of reference signals in the reference signal burst relative to a second reference signal configuration.
[0212] Aspect 5: The method of any of aspects 2 through 4, wherein the configuration message indicates a reduction in the length of the on-off keying signal, the periodicity of the on-off keying signal, or both, relative to a second reference signal configuration.
[0213] Aspect 6: The method of any of aspects 1 through 5, wherein the portion of the duration of the reference signal burst available for transmission of the on-off keying signal is non-overlapping with the plurality of reference signals.
[0214] Aspect 7: The method of any of aspects 1 through 6, wherein the plurality of reference signals comprise a synchronization signal block (SSB) , a cell-specific reference signal (CRS) , a tracking reference signal (TRS) , a positioning reference signal (PRS) , a channel state information reference signal (CSI-RS) , or a combination thereof.
[0215] Aspect 8: The method of any of aspects 1 through 7, wherein the on-off keying signal is one of a synchronization signal (SS) , a wake-up signal (WUS) , a forward link synchronization signal, or a forward link packet.
[0216] Aspect 9: A method for wireless communications at a wireless device, comprising: transmitting, via a first resource, a plurality of reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for on-off keying signal transmission; transmitting an on-off keying signal via the second resource; and monitoring for a message responsive to one or more reference signals of the plurality of reference signals of the reference signal burst, or responsive to the on-off keying signal, or responsive to both.
[0217] Aspect 10: The method of aspect 9, wherein a subcarrier spacing is the same for the on-off keying signal and the one or more reference signals of the plurality of reference signals.
[0218] Aspect 11: The method of aspect 9, wherein a subcarrier spacing is different for the on-off keying signal and the one or more reference signals of the plurality of reference signals.
[0219] Aspect 12: The method of aspect 11, wherein the reference signal configuration indicates a guard band between the first resource and the second resource.
[0220] Aspect 13: The method of aspect 12, wherein a size of the guard band is based at least in part on a power boost of the on-off keying signal.
[0221] Aspect 14: The method of any of aspects 11 through 13, wherein a power spectral density of the on-off keying signal is less than or equal to a power spectral density of the one or more reference signals of the plurality of reference signals.
[0222] Aspect 15: A method for wireless communications at a wireless device, comprising: transmitting, to an energy-harvesting device, control signaling indicating a plurality of time occasions, the control signaling indicating a first subset of the plurality of time occasions are one or more on-off keying time occasions and a second subset of plurality of time occasions are one or more reference signal time occasions; transmitting one or more on-off keying signals during the one or more on-off keying time occasions; transmitting one or more reference signals during the one or more reference signal time occasions; and monitoring for a message, from the energy-harvesting device, responsive to the one or more on-off keying signals, or responsive to the one or more reference signals, or responsive to both.
[0223] Aspect 16: The method of aspect 15, wherein transmitting the control signaling comprises: transmitting a single control message indicating the one or more on-off keying time occasions and the one or more reference signal time occasions.
[0224] Aspect 17: The method of aspect 15, wherein transmitting the control signaling comprises: transmitting a first control message indicating the plurality of time occasions; and transmitting a second control message indicating the one or more reference signal time occasions.
[0225] Aspect 18: The method of any of aspects 15 through 17, wherein the plurality of time occasions are contiguous time occasions.
[0226] Aspect 19: The method of any of aspects 15 through 18, further comprising: refraining from transmission in one or more time occasions of the one or more on-off keying time occasions based at least in part on two or more reference signal time occasions occurring within a defined time duration.
[0227] Aspect 20: The method of aspect 19, wherein the defined time duration is a quantity of slots.
[0228] Aspect 21: A wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to perform a method of any of aspects 1 through 8.
[0229] Aspect 22: A wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 8.
[0230] Aspect 23: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 8.
[0231] Aspect 24: A wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to perform a method of any of aspects 9 through 14.
[0232] Aspect 25: A wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 9 through 14.
[0233] Aspect 26: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 9 through 14.
[0234] Aspect 27: A wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to perform a method of any of aspects 15 through 20.
[0235] Aspect 28: A wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 15 through 20.
[0236] Aspect 29: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 15 through 20.
[0237] It should be noted that the methods described herein describe possible implementations. The operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0238] 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.
[0239] 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.
[0240] 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, a graphics processing unit (GPU) , a neural processing unit (NPU) , 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) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0241] 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.
[0242] 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. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0243] 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. ”
[0244] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “acomponent” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0245] 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.
[0246] 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.
[0247] 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 figures, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0248] 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
1.A wireless device, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:transmit a plurality of reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating a duration of the reference signal burst and that a portion of the duration is available for on-off keying signal transmission;transmit an on-off keying signal during the portion of the duration of the reference signal burst that is available for on-off keying signal transmission; andmonitor for a message responsive to one or more of the plurality of reference signals of the reference signal burst, or responsive to the on-off keying signal, or responsive to both.2.The wireless device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:transmit a configuration message, the configuration message indicating the reference signal configuration and identifying a length of the on-off keying signal, a periodicity of the on-off keying signal, or both.3.The wireless device of claim 2, wherein:the configuration message indicates an index of a lookup table, andthe index of the lookup table indicates both the length of the on-off keying signal and the periodicity of the on-off keying signal.4.The wireless device of claim 2, wherein the configuration message indicates a reduction in a quantity of reference signals in the reference signal burst relative to a second reference signal configuration.5.The wireless device of claim 2, wherein the configuration message indicates a reduction in the length of the on-off keying signal, the periodicity of the on-off keying signal, or both, relative to a second reference signal configuration.6.The wireless device of claim 1, wherein the portion of the duration of the reference signal burst available for transmission of the on-off keying signal is non-overlapping with the plurality of reference signals.7.The wireless device of claim 1, wherein the plurality of reference signals comprise a synchronization signal block (SSB) , a cell-specific reference signal (CRS) , a tracking reference signal (TRS) , a positioning reference signal (PRS) , a channel state information reference signal (CSI-RS) , or a combination thereof.8.The wireless device of claim 1, wherein the on-off keying signal is one of a synchronization signal (SS) , a wake-up signal (WUS) , a forward link synchronization signal, or a forward link packet.9.A wireless device, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:transmit, via a first resource, a plurality of reference signals of a reference signal burst in accordance with a reference signal configuration, the reference signal configuration indicating that the first resource for reference signal burst transmission is frequency-division-multiplexed with a second resource for on-off keying signal transmission;transmit an on-off keying signal via the second resource; andmonitor for a message responsive to one or more reference signals of the plurality of reference signals of the reference signal burst, or responsive to the on-off keying signal, or responsive to both.10.The wireless device of claim 9, wherein a subcarrier spacing is the same for the on-off keying signal and the one or more reference signals of the plurality of reference signals.11.The wireless device of claim 9, wherein a subcarrier spacing is different for the on-off keying signal and the one or more reference signals of the plurality of reference signals.12.The wireless device of claim 11, wherein the reference signal configuration indicates a guard band between the first resource and the second resource.13.The wireless device of claim 12, wherein a size of the guard band is based at least in part on a power boost of the on-off keying signal.14.The wireless device of claim 11, wherein a power spectral density of the on-off keying signal is less than or equal to a power spectral density of the one or more reference signals of the plurality of reference signals.15.A wireless device, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:transmit, to an energy-harvesting device, control signaling indicating a plurality of time occasions, the control signaling indicating a first subset of the plurality of time occasions are one or more on-off keying time occasions and a second subset of plurality of time occasions are one or more reference signal time occasions;transmit one or more on-off keying signals during the one or more on-off keying time occasions;transmit one or more reference signals during the one or more reference signal time occasions; andmonitor for a message, from the energy-harvesting device, responsive to the one or more on-off keying signals, or responsive to the one or more reference signals, or responsive to both.16.The wireless device of claim 15, wherein, to transmit the control signaling, the one or more processors are individually or collectively operable to execute the code to cause the wireless device to:transmit a single control message indicating the one or more on-off keying time occasions and the one or more reference signal time occasions.17.The wireless device of claim 15, wherein, to transmit the control signaling, the one or more processors are individually or collectively operable to execute the code to cause the wireless device to:transmit a first control message indicating the plurality of time occasions; andtransmit a second control message indicating the one or more reference signal time occasions.18.The wireless device of claim 15, wherein:the plurality of time occasions are contiguous time occasions.19.The wireless device of claim 15, wherein the one or more processors are individually or collectively further operable to execute the code to cause the wireless device to:refrain from transmission in one or more time occasions of the one or more on-off keying time occasions based at least in part on two or more reference signal time occasions occurring within a defined time duration.20.The wireless device of claim 19, wherein the defined time duration is a quantity of slots.