Modulation scheme for chirp-based wake-up signal

Abstract

Methods, systems, and devices for wireless communication are described. A device may modulate a set of information bits using on-off keying (OOK) or frequency shift keying (FSK), or both. The device may generate a wake-up signal (WUS) waveform using the chirp signal and the modulated set of information bits. The device may transmit the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration. The WUS waveform may occupy at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the modulated set of information bits.

Description

Technical Field

[0001] This disclosure relates to wireless communications, including modulation schemes for chirped wake-up signals (WUS). Background Technology

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, and broadcasting. These systems can support communication with multiple users by sharing 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-A 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 can 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 Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM).

[0003] A wireless multiple access communication system may include one or more network nodes, each supporting wireless communication of communication devices, which may be referred to as user equipment (UE). To reduce power consumption, these communication devices may support low-power wake-up signals (LP-WUS). In some cases, existing modulation techniques used for LP-WUS may be deficient. Summary of the Invention

[0004] The described technology relates to methods, systems, devices, and apparatuses supporting improved modulation schemes for chirped wake-up signals (WUS). For example, the described technology provides a framework for generating a WUS waveform using a chirped signal having on-off keying (OOK) or frequency shift keying (FSK) or both. In some examples, a device (e.g., a user equipment (UE), a network node) may use OOK or FSK or both to modulate a set of information bits. The device may use the chirped signal and the modulated set of information bits to generate the WUS waveform. The device may transmit the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration. In some examples, the WUS waveform may occupy at least that portion of the WUS bandwidth and at least that portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0005] A method for wireless communication at a device is described. The method may include: modulating a set of information bits using OOK or FSK or both; generating a WUS waveform using a chirped signal and the modulated set of information bits; and transmitting the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least that portion of the WUS bandwidth and at least that portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0006] An apparatus for wireless communication at a device is described. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. The at least one processor may be configured to: modulate a set of information bits using OOK or FSK or both; generate a WUS waveform using a chirped signal and the modulated set of information bits; and transmit the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least that portion of the WUS bandwidth and at least that portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0007] Another apparatus for wireless communication at a device is described. The apparatus may include: components for modulating a set of information bits using OOK or FSK or both; components for generating a WUS waveform using a chirped signal and the modulated set of information bits; and components for transmitting the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least that portion of the WUS bandwidth and at least that portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0008] A non-transitory computer-readable medium is described, storing code for wireless communication at a device. The code may include instructions executable by at least one processor to: modulate a set of information bits using OOK or FSK, or both; generate a WUS waveform using a chirped signal and the modulated set of information bits; and transmit the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least that portion of the WUS bandwidth and at least that portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0009] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting or receiving a control message indicating an OOK or FSK or both and identifying a WUS scheme of the mode, wherein modulation of the set of information bits may be based on the control message, and the WUS waveform may be transmitted according to the mode.

[0010] Some examples of the methods, apparatus, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for sending or receiving control messages indicating a WUS scheme that identifies one or more parameters associated with the generation of the WUS waveform, wherein the generation of the WUS waveform may be based on the control messages.

[0011] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for sending or receiving control messages indicating a WUS scheme that identifies the WUS bandwidth and the WUS duration, wherein the generation of the WUS waveform may be based on the control messages.

[0012] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, the WUS waveform occupies the WUS bandwidth and a portion of the WUS duration, and the portion of the WUS duration occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0013] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the WUS waveform occupies a portion of the WUS bandwidth and the WUS duration, and the portion of the WUS bandwidth occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0014] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration, and the portion of the WUS bandwidth and the portion of the WUS duration indicate at least the first value of the first bit in the set of information bits according to the pattern.

[0015] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the portion of the WUS bandwidth occupied by the WUS waveform and the portion of the WUS duration indicate, according to the pattern, the first bit value of the first bit and the second bit value of the second bit in the set of information bits.

[0016] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, a first portion of the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration to indicate a first value of the first bit in the set of information bits according to the pattern, and a second portion of the WUS waveform occupies a second portion of the WUS bandwidth and a second portion of the WUS duration to indicate a second value of the second bit in the set of information bits according to the pattern.

[0017] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the chirped signal comprises a monotonic frequency signal having a slope that increases or decreases linearly with time.

[0018] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, at least the pattern or the slope, or both, indicates the first value of the first bit in the set of information bits.

[0019] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the slope indicates the first value of the first bit in the set of information bits, and the pattern indicates the second value of the second bit in the set of information bits.

[0020] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, the first value of the first bit may be based on the frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof.

[0021] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the chirped signal includes a nonlinear chirped signal.

[0022] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for: obtaining a time-domain sampling sequence based on sampling the WUS waveform within at least that portion of the WUS bandwidth and that portion of the WUS duration; applying a transformation to the time-domain sampling sequence to generate a frequency-domain sampling sequence; and generating an orthogonal frequency division multiplexing (OFDM) waveform based on mapping the frequency-domain sampling sequence to a set of multiple resource elements, wherein the WUS waveform may be the OFDM waveform.

[0023] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the chirped signal includes a Zadoff Chu sequence.

[0024] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, the WUS waveform may be a low-power WUS (LP-WUS) waveform.

[0025] A method for wireless communication at a device is described. The method may include: monitoring the WUS bandwidth and WUS duration of a WUS waveform of an indication information bit set; receiving the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration based on the monitoring, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the information bit set; and transitioning from a first state to a second state based on the received WUS waveform.

[0026] An apparatus for wireless communication at a device is described. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. The at least one processor may be configured to: monitor the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits; based on the monitoring, receive the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the set of information bits; and transition from a first state to a second state based on the received WUS waveform.

[0027] Another apparatus for wireless communication at a device is described. The apparatus may include: components for monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits; components for receiving the WUS waveform based on the monitoring via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the set of information bits; and components for transitioning from a first state to a second state based on the received WUS waveform.

[0028] A non-transitory computer-readable medium is described, storing code for wireless communication at a device. The code may include instructions executable by at least one processor for: monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits; receiving the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration based on the monitoring, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the set of information bits; and transitioning from a first state to a second state based on the received WUS waveform.

[0029] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for sending or receiving control messages indicating a WUS scheme of OOK or FSK or both, wherein receiving the WUS waveform may be based on the control message.

[0030] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for sending or receiving control messages indicating a WUS scheme that identifies one or more parameters associated with the generation of the WUS waveform, wherein receiving the WUS waveform may be based on the control message.

[0031] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for sending or receiving control messages indicating a WUS scheme that identifies the WUS bandwidth and the WUS duration, wherein monitoring the WUS bandwidth and the WUS duration may be based on the control messages.

[0032] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for decoding the WUS waveform to obtain the set of information bits.

[0033] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for performing a dechirping operation or a filtering operation or both, wherein decoding of the WUS waveform may be based on the dechirping operation or the filtering operation or both.

[0034] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for identifying the correlation between the WUS waveform and a first type or a second type of chirp signal, wherein decoding of the WUS waveform may be based on the correlation.

[0035] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the WUS waveform occupies the WUS bandwidth and a portion of the WUS duration, and the portion of the WUS duration occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0036] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, the WUS waveform occupies a portion of the WUS bandwidth and the WUS duration, and the portion of the WUS bandwidth occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0037] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration, and the portion of the WUS bandwidth and the portion of the WUS duration indicate at least the first value of the first bit in the set of information bits according to the pattern.

[0038] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the portion of the WUS bandwidth occupied by the WUS waveform and the portion of the WUS duration indicate, according to the pattern, the first bit value of the first bit and the second bit value of the second bit in the set of information bits.

[0039] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, a first portion of the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration to indicate a first value of the first bit in the set of information bits according to a pattern, and a second portion of the WUS waveform occupies a second portion of the WUS bandwidth and a second portion of the WUS duration to indicate a second value of the second bit in the set of information bits according to the pattern.

[0040] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the chirped signal comprises a monotonic frequency signal with a slope that increases or decreases linearly.

[0041] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, at least one pattern or the slope or both associated with the WUS waveform indicate a first value of the first bit in the set of information bits.

[0042] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the slope indicates the first value of the first bit in the set of information bits, and the pattern indicates the second value of the second bit in the set of information bits.

[0043] In some examples of the methods, apparatuses and nontransitory computer-readable media described herein, the first value of the first bit may be based on the frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof.

[0044] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the chirped signal includes a nonlinear chirped signal.

[0045] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the WUS waveform may be an OFDM waveform.

[0046] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the chirped signal includes a Zadoff Chu sequence.

[0047] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the WUS waveform may be an LP-WUS waveform. Attached Figure Description

[0048] Figure 1 and Figure 2 Examples of wireless communication systems supporting modulation schemes for chirped wake-up signals (WUS) according to one or more aspects of this disclosure are shown respectively.

[0049] Figures 3 to 9 , Figure 10A , Figure 10B , Figure 11A and Figure 11B An example of a WUS waveform diagram supporting a modulation scheme for chirped WUS based on one or more aspects of this disclosure is shown.

[0050] Figure 12 An example of a waveform generation process for a chirped WUS modulation scheme supported by one or more aspects of this disclosure is shown.

[0051] Figure 13 An example of a process flow supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown.

[0052] Figure 14 and Figure 15 A block diagram of an apparatus for a chirped WUS modulation scheme, according to one or more aspects of this disclosure, is shown.

[0053] Figure 16 A block diagram is shown that supports one or more aspects of the present disclosure for a communication manager for a chirped WUS modulation scheme.

[0054] Figure 17 A diagram is shown illustrating a system including a UE supporting a modulation scheme for chirped WUS, according to one or more aspects of this disclosure.

[0055] Figure 18 A diagram is shown illustrating a system comprising a network entity supporting a modulation scheme for chirped WUS, according to one or more aspects of this disclosure.

[0056] Figure 19 and Figure 20 A flowchart illustrating a method for a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. Detailed Implementation

[0057] Some wireless communication systems support low-power wireless devices. As described herein, a low-power device can refer to a device capable of detecting signals with relatively low received power. For example, a low-power device may include an ambient Internet of Things (IoT) device or another type of user equipment (UE) capable of detecting signals with relatively low received power. Signals with relatively low received power may include a low-power wake-up signal (LP-WUS). For example, a low-power device may operate in idle mode and may use LP-WUS for paging reception while operating in idle mode. In this example, detection of LP-WUS may trigger the low-power device to transition from idle mode to active mode.

[0058] However, in some examples, low-power devices may be unable to detect one or more types of waveforms, such as orthogonal frequency division multiplexing (OFDM) waveforms, or waveforms with relatively high sampling rates (e.g., sampling rates greater than the system bandwidth), or both. Additionally or alternatively, low-power devices may lack mechanisms for obtaining relatively accurate timing or frequency tracking, or both. Therefore, the transmitting device of a low-power device may use amplitude shift keying (ASK) (such as on-off keying (OOK)) or frequency shift keying (FSK) modulation to generate LP-WUS. For example, the transmitting device may use an OOK modulation scheme or an FSK modulation scheme, or both, to generate LP-WUS. In such examples, LP-WUS may include OOK waveforms, FSK waveforms, or OOK with FSK waveforms (e.g., OOK / FSK waveforms). In some examples, the OOK / FSK waveform may be single-carrier OOK / FSK or multi-carrier OOK / FSK. In some examples, low-power devices may be able to detect single-carrier OOK / FSK waveforms at relatively low sampling rates. However, in this example, single-carrier OOK / FSK waveforms may be relatively sensitive to frequency-selective signal fading, which could affect the performance of low-power devices (e.g., devices receiving single-carrier OOK / FSK waveforms). Multi-carrier OOK / FSK waveforms (e.g., OOK / FSK waveforms occupying multiple subcarriers in the frequency domain) are relatively robust to frequency-selective signal fading. However, relatively low sampling rates may not be suitable for detecting multi-carrier OOK / FSK waveforms. That is, to obtain an appropriate amount of energy from a multi-carrier OOK / FSK waveform, it can be sampled at a rate proportional to the bandwidth it spans. Low-power devices may not support such sampling rates.

[0059] In some examples, to reduce frequency-selective fading, the transmitting device may use OFDM-based OOK / FDM waveforms to generate LP-WUS. For example, the transmitting device may generate an OOK waveform or an FSK waveform, or both, that are compatible with OFDM waveforms (e.g., OFDM signals). However, in some examples, both OFDM-based OOK waveforms and OFDM-based FSK waveforms may require relatively high sampling rates, and using relatively low sampling rates (which can be supported by low-power devices) can lead to performance degradation.

[0060] Various aspects of this disclosure relate to modulation schemes for chirped WUS, and more specifically, to a framework for generating WUS waveforms using chirped signals having OOK or FSK, or both. For example, such techniques enable transmitting devices to generate LP-WUS waveforms based on chirped signals. In some examples, the transmitting device may use OOK or FSK, or both, to modulate a set of information bits. The transmitting device may use the chirped signal and the modulated set of information bits to generate a WUS waveform (e.g., an LP-WUS waveform). The transmitting device may transmit the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration. In some examples, the WUS waveform may occupy at least a portion of the WUS bandwidth and at least a portion of the duration according to a pattern. This pattern may be based on the modulated set of information bits. For example, the portion of the WUS bandwidth and duration occupied by the WUS waveform (e.g., OFDM symbols) may be based on corresponding values ​​of one or more bits indicated via the WUS waveform. In some examples, low-power devices (such as environmental IoT devices) may detect the WUS waveform. In response, the low-power device can switch from idle mode to active mode, enabling it to communicate with the transmitting device (e.g., the device transmitting LP-WUS).

[0061] The aspects of the subject matter described herein can be implemented to achieve one or more of the following potential advantages. For example, the techniques employed by the described communication device can provide benefits and enhancements to the operation of the communication device, including enabling chirped LP-WUS. The operations performed by the described communication device can result in improved performance and reduced power consumption at low-power devices. In some examples, among other benefits, the operations performed by the described communication device can also support improved communication reliability within a wireless communication system and other benefits. The aspects of this disclosure are first described in the context of a wireless communication system. The aspects of this disclosure are also described in the context of WUS waveform diagrams, waveform generation processes, and process flows. Furthermore, the aspects of this disclosure are further illustrated by apparatus diagrams, system diagrams, and flowcharts relating to modulation schemes for chirped WUS, and are described with reference to these diagrams.

[0062] Figure 1Examples of wireless communication systems 100 supporting modulation schemes for chirped WUS based on one or more aspects of this disclosure are shown. Wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating under other systems and radio technologies including future systems and radio technologies not explicitly mentioned herein.

[0063] Network entity 105 may be distributed across a geographical area to form wireless communication system 100 and may include devices in different forms or with different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, among other names. In some examples, network entity 105 and UE 115 may wirelessly communicate via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, network entity 105 may support coverage area 110 (e.g., a geographical coverage area) within which UE 115 and network entity 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area within which network entity 105 and UE 115 may support the transmission of signals according to one or more radio access technologies (RATs).

[0064] Devices in wireless communication system 100 may communicate on unlicensed spectrum, which may be a portion of the spectrum including frequency bands traditionally used by Wi-Fi technology, such as the 5 GHz band, 2.4 GHz band, 60 GHz band, 3.6 GHz band, and / or 900 MHz band. Unlicensed spectrum may also include other frequency bands.

[0065] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can be able to support various types of devices (such as, e.g., ...). Figure 1 It communicates with other UEs (115 or network entity 105) as shown.

[0066] As described herein, a node in the wireless communication 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, apparatus, device, 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 UE 115. Alternatively, a node may be network entity 105. Alternatively, a first node may be configured to communicate with a second or third node. In one aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be UE 115. In another aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different from these examples. Similarly, references to UE 115, network entity 105, device, equipment, computing system, etc., may include disclosures of UE 115, network entity 105, device, equipment, computing system, etc., as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that a first node is configured to receive information from a second node.

[0067] In some examples, network entity 105 may communicate with core network 130 or with each other, or both. For example, network entity 105 may communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entity 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entity 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. Backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 can communicate with core network 130 via communication link 155.

[0068] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, node B, eNodeB (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home node B, home eNodeB, or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, self-contained) base station architecture that may be configured to utilize a protocol stack physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0069] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed across two or more network entities 105 (such as an Integrated Access Backhaul (IAB) network, an Open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a Virtualized RAN (vRAN) (e.g., a Cloud RAN (C-RAN)). For example, network entity 105 may include one or more of the following: a Central Unit (CU) 160, a Distributed Unit (DU) 165, a Radio Unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a near-real-time RIC, a non-real-time RIC), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. 170 may also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or transmit / receive point (TRP). One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0070] The functional splitting among CU 160, DU 165, and RU 170 is flexible and can support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a protocol stack functional splitting can be used between CU 160 and DU 165, allowing CU 160 to support one or more layers of the protocol stack, and DU 165 to support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionalities and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). The CU160 can connect to one or more DU 165s or RU 170s, and one or more DU 165s or RU 170s can 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 each can be at least partially controlled by the CU 160. Additionally or alternatively, a protocol stack functional split can be employed between the DU 165 and RU 170, such that the DU 165 can support one or more layers of the protocol stack, and the RU 170 can support one or more different layers of the protocol stack. The DU 165 can support one or more different cells (e.g., via one or more RU 170s). In some cases, functional decomposition between CU 160 and DU 165, or between DU 165 and RU 170, can be performed within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer can be performed by different of CU 160, DU 165, or RU 170). CU 160 can be further functionally decomposed into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DU 165s via midhaul communication link 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RU 170s via fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the midhaul communication link 162 or the fronthaul communication link 168 may be implemented based on the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the corresponding network entities 105 that communicate via these communication links.

[0071] In some wireless communication systems (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access can support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB node 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DU 165s or one or more RU 170s may be partially controlled by one or more CU 160s associated with donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB node 104) via supported access and backhaul links (e.g., backhaul communication link 120). IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include a separate set of antennas for relaying communication with UE 115, or may share the same antennas (e.g., those of RU 170) for access to IAB node 104 via DU 165 of IAB node 104. (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) may be configured to operate according to the techniques described herein.

[0072] In the context of applying the techniques described herein to a decomposed RAN architecture, one or more components of the decomposed RAN architecture can be configured to support modulation schemes for chirped WUS as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) can additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0073] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0074] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, network entities 105, and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0075] UE 115 and network entity 105 can wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" can refer to a set of RF spectrum resources that define the physical layer structure used to support the communication link 125. For example, a carrier for the communication link 125 may include a portion of the RF spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between network entity 105 and other devices can refer to communication between these devices and any part of network entity 105 (e.g., entity, sub-entity). For example, the terms “send,” “receive,” or “communicate” when referring to network entity 105 can refer to any part of the RAN network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

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

[0077] The signal waveform transmitted via a carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may refer to a resource of one symbol period (e.g., the duration of a modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the decoding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., over the transmission duration) and a relatively high-order modulation scheme can correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources can increase the data rate or data integrity used for communication with UE 115.

[0078] The time interval for network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period. seconds, of which This can represent the supported subcarrier spacing, while The supported Discrete Fourier Transform (DFT) size can be represented. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0079] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix appended to each symbol period). In some examples of the wireless communication system 100, the time slots may be further divided into multiple micro-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., The duration of a symbol period is associated with a (number) sampling period. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0080] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0081] Physical channels can be multiplexed using various techniques to enable communication using carriers. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels for signaling via downlink carriers. The control region of a physical control channel (e.g., a control resource set (CORESET)) can be defined by a set of symbol periods and can extend across the system bandwidth of a carrier or a subset of that bandwidth. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 can monitor or search control regions to obtain control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a concatenated manner. The aggregation level of control channel candidates can refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include: a common search space set configured to transmit control information to multiple UEs 115, and a UE-specific search space set used to transmit control information to a specific UE 115.

[0082] In some examples, network entity 105 (e.g., base station 140, RU 170) may be mobile, and thus provide communication coverage to mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 use the same or different radio access technologies to provide coverage for various coverage areas 110.

[0083] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with network entity 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communication from devices with integrated sensors or meters to measure or acquire information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices 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 geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial toll collection.

[0084] Some UE 115s can be configured to operate in a power-saving mode, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not involve concurrent transmission and reception). In some examples, half-duplex communication can be performed at a reduced peak rate. Other power-saving techniques for UE 115s include entering a power-saving deep sleep mode when not engaged in active communication, operating with limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UE 115s can be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a carrier's guard band, or outside a carrier.

[0085] Wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communication may include private 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 prioritizing 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.

[0086] In some examples, UE 115 may be configured to support direct communication with other UE 115s via device-to-device (D2D) communication link 135 (e.g., according to peer-to-peer (P2P), D2D, or sidelink protocols). In some examples, one or more UE 115s performing D2D communication in a group may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support aspects of such D2D communication configured (e.g., scheduled) by network entity 105. In some examples, one or more UE 115s in such a group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, the group of UE 115s communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 transmits to each of the other UE 115s in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0087] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or a combination of these. Vehicles may signal information related to traffic conditions, signal control, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure (such as roadside units), or communicate with the network via one or more network nodes (e.g., network entity 105, base station 140, RU 170) using vehicle-to-network (V2N) communication, or both.

[0088] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC), and may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by network entity 105 (e.g., base station 140) associated with core network 130. User IP packets can be transferred through user plane entities, which can provide IP address allocation and other functions. User plane entities may connect to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0089] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. Generally, the region from 300 MHz to 3 GHz is referred to as the Ultra High Frequency (UHF) region or decimeter band because the wavelength range is 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 these waves are sufficient to penetrate structures so that macrocells can provide service to UE 115 located indoors. Compared to communication using smaller frequencies and longer wavelengths in the lower frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz, communication using UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0090] Wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, wireless communication system 100 may use unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology. When operating using unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation using unlicensed frequency bands may be combined with component carriers operating using licensed frequency bands in a carrier aggregation configuration (e.g., LAA). Operations using unlicensed spectrum may include downlink transmission, uplink transmission, P2P transmission, or D2D transmission, etc.

[0091] Network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which can support MIMO operation 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, the antennas or antenna arrays associated with network entity 105 may be located at different geographical locations. Network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that network entity 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0092] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with the device by the transmitting or receiving device. The adjustments associated with each of these antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device or relative to some other orientation).

[0093] Wireless communication system 100 may support low-power wireless devices, such as environmental IoT devices or other types of UEs 115 that can detect signals with relatively low received power. For example, wireless communication system 100 may support low-power devices that can operate in idle mode and can use LP-WUS for paging reception when operating in idle mode. In some examples, the transmitter of a low-power device (such as network entity 105 or another UE 115) may use OOK or FSK modulation to generate LP-WUS. For example, the transmitter may use an OOK modulation scheme or an FSK modulation scheme or both to generate LP-WUS. In such an example, LP-WUS may include OOK waveforms, FSK waveforms, or OOK / FSK waveforms, such as single-carrier OOK / FSK or multi-carrier OOK / FSK. Single-carrier OOK / FSK waveforms can be detected at relatively low sampling rates. However, single-carrier OOK / FSK waveforms may be relatively sensitive to frequency-selective signal fading, which may affect the performance of low-power devices (e.g., devices receiving single-carrier OOK / FSK waveforms). Additionally, while multicarrier OOK / FSK waveforms are relatively robust to frequency-selective signal fading, relatively low sampling rates may not be suitable for detecting them. In some examples, to reduce frequency-selective fading, transmitting devices may use OFDM-based OOK / FDM waveforms to generate LP-WUS. However, in some examples, both OFDM-based OOK and OFDM-based FSK waveforms may require relatively high sampling rates, and using relatively low sampling rates (which can be supported by low-power devices) can lead to performance degradation.

[0094] In some examples, the wireless communication system 100 may support a framework for generating a WUS waveform using a chirped signal having OOK or FSK, or both. For example, such techniques enable a transmitting device to generate an LP-WUS waveform based on a chirped signal. In some examples, the transmitting device (e.g., UE 115, network entity 105) may use OOK or FSK, or both, to modulate a set of information bits. The transmitting device may use the chirped signal and the modulated set of information bits to generate a WUS waveform (e.g., an LP-WUS waveform). The transmitting device may transmit the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration. In some examples, the WUS waveform may occupy at least a portion of the WUS bandwidth and at least a portion of the duration according to a pattern. This pattern may be based on the modulated set of information bits. For example, the portion of the WUS bandwidth and duration occupied by the WUS waveform (e.g., OFDM symbols) may be based on corresponding values ​​of one or more bits indicated by the WUS waveform. In some examples, a low-power device (e.g., UE 115, such as an environmental IoT device) may detect the WUS waveform. In response, the low-power device can transition from idle mode to active mode, enabling it to communicate with the transmitting device (e.g., a device transmitting LP-WUS). In some examples, by using a chirped signal to transmit the WUS waveform, the transmitting device can improve performance and reduce power consumption at the low-power device, among other benefits.

[0095] Figure 2 An example of a wireless communication system 200 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. The wireless communication system 200 may implement one or more aspects of the wireless communication system 100, or may implement them at said one or more aspects. For example, the wireless communication system 200 may include devices 205-a and 205-b. Device 205-a may be composed of… Figure 1 Examples of UE 115 or network entity 105 (e.g., CU, DU, RU, base station, IAB node, or one or more other network nodes) described in this figure are illustrated and referenced. Additionally, device 205-b may be... Figure 1 An example of UE 115 is illustrated and referenced in the figure. Device 205-a can communicate with device 205-b via communication link 230, which can be provided by... Figure 1 Examples of communication link 125 (e.g., access link, Uu interface) or communication link 135 (e.g., D2D link, PC5 interface) described in the figure are illustrated and referenced.

[0096] Wireless communication system 200 may support zero-power or near-zero-power wireless devices (e.g., receivers, transmitters) and other low-power devices, such as device 205-b. For example, device 205-b may be able to detect one or more types of signals (e.g., waveforms) that can be detected by relatively low-power devices. That is, device 205-b may be able to detect signals with relatively low receive power. For example, device 205-b is an example of an environmental IoT device or another type of UE that may be able to detect signals with relatively low receive power. In other words, relatively low-power signals may be useful for environmental IoT devices. In some examples, device 205-b may support receiving signals with relatively low receive power via a low-power wake-up radio unit (LP-WUR). For example, device 205-b may be configured with a main radio unit 220 that can be coupled to an LP-WUR 225. The LP-WUR 225 may be able to detect signals with relatively low receive power (e.g., due to unconventional radio receiver designs). In some examples, the LP-WUR 225 may be able to detect one or more types of WUS, such as low-power WUS (LP-WUS). In such examples, device 205-b may use the LP-WUR 225 for paging reception during idle mode. For example, device 205-a may send an LP-WUS to wake up device 205-b (e.g., to trigger device 205-b to transition from idle mode to active mode). For example, the LP-WUR 225 may be coupled (e.g., paired) with the main radio component 220. Thus, device 205-b may determine to transition from a first state (e.g., idle mode or low-power mode) to a second state (e.g., active mode) in response to the detection of an LP-WUS via the LP-WUR 225. In this example, the LP-WUS may indicate paging (e.g., device 205-a or another device has data to be sent to device 205-b). In other words, device 205-b can use LP-WUR 225 to monitor paging signals during idle mode and can transition from idle mode to active mode (e.g., and communicate via main radio 220) in response to the detection of LP-WUS via LP-WUR 225. In some examples, using LP-WUR 225 for paging reception (or receiving other types of low-power signals) consumes less power at device 205-b compared to using main radio 220. That is, using LP-WUR 225 to detect signals transmitted from device 205-a consumes less power at device 205-b compared to using main radio 220 to detect signals transmitted from device 205-a. Therefore, using LP-WUR 225 (e.g., for receiving LP-WUS) allows device 205-b to save power.

[0097] However, in some examples, device 205-b may not be able to detect one or more types of waveforms (e.g., signals). For example, device 205-b may not be able to detect OFDM signals, or signals with relatively high sampling rates (e.g., the sampling rate of the detectable signal may be less than the system bandwidth) or both. Additionally or alternatively, device 205-b may lack mechanisms for obtaining relatively accurate timing or frequency tracking or both. In some other examples, device 205-b may be able to detect the type of LP-WUS that may be based on an OOK modulation scheme or an FSK modulation scheme or both. For example, device 205-b may use LP-WUR 225 to detect LP-WUS generated using an OOK modulation scheme (e.g., an ASK modulation scheme) or an FSK modulation scheme or both. That is, for some LP-WUS applications, LP-WUS (e.g., LP-WUS waveforms) may include OOK and FSK. In other words, device 205-b may be able to detect OOK waveforms, FSK waveforms, or OOK with FSK waveforms (OOK / FSK waveforms). Therefore, the waveform used for LP-WUS can include an OOK waveform, an FSK waveform, or both. In some examples, the OOK / FSK waveform can be single-carrier OOK / FSK or multi-carrier OOK / FSK. For example, device 205-a can use a single-carrier OOK / FSK waveform to transmit LP-WUS to device 205-b. In this example, device 205-b can detect the single-carrier OOK / FSK waveform (e.g., LP-WUS) at a relatively low sampling rate (e.g., approximately 30 kHz sampling at a 30 kHz SCS). However, in some examples, the single-carrier OOK / FSK waveform can be relatively sensitive to frequency selectivity (e.g., frequency-selective signal fading), which can affect the performance of LP-WUS. Additionally or alternatively, device 205-a can use a multi-carrier OOK / FSK waveform (e.g., a waveform occupying multiple subcarriers in the frequency domain) to transmit LP-WUS. In this example, LP-WUS can be relatively robust to frequency-selective signal fading. However, in some examples, multi-carrier OOK / FSK waveforms may require relatively high sampling rates (e.g., sampling rates proportional to the total bandwidth spanned by LP-WUS), which may not be supported by device 205-b. In other words, multi-carrier OOK / FSK waveforms can be associated with relatively high sampling rates, which may not be supported by low-power devices. Additionally, while single-carrier OOK / FSK waveforms can be associated with relatively low sampling rates, they can be sensitive to frequency-selective fading.

[0098] To reduce frequency-selective fading, device 205-a can use OFDM-based OOK / FDM waveforms. For example, device 205-a can generate OOK or FSK signals, or both, compatible with other OFDM signals. In some examples, device 205-a can generate such signals for LP-WUS. That is, device 205-a can use OOK or FSK waveforms, or both, compatible with other OFDM signals for LP-WUS. In other words, both OFDM-compatible FSK and OFDM-compatible OOK waveforms can be used for LP-WUS. For example, an OOK waveform can correspond to a waveform having an on state (e.g., on duration) where the amplitude of the wave is non-zero and an off state (e.g., off duration) where the amplitude of the wave is zero (or close to zero). In this example, the on state (e.g., the duration of a non-zero waveform amplitude) can represent a first bit value (e.g., binary 1). Additionally, the off state (e.g., the duration of a zero waveform amplitude) can represent a second bit value (e.g., binary 0). In some examples, the FSK waveform may correspond to a waveform having an on state and an off state, where the waveform has a first frequency in the on state and a second frequency in the off state. In such examples, the on state (e.g., the duration of the waveform having the first frequency) may represent a first bit value (e.g., binary 1). Additionally, the off state (e.g., the duration of the waveform having the second frequency) may represent a second bit value (e.g., binary 0). In some examples, FSK may be considered as an on-off state in the frequency domain. In some examples, device 205-a may generate an OFDM-based OOK signal by first generating a time-domain OOK signal (e.g., of length M) and then passing the generated OOK signal through an OFDM waveform generator (such as a DFT-S-OFDM waveform generator with inverse fast Fourier transform (IFFT) (e.g., an M-point DFT+N-point IFFT waveform generator, where N>M)). In this example, the on-time may include a non-zero sampled sequence (e.g., M / K bits with values ​​of 1), and the off-time may include a zero sampled sequence (e.g., M / K bits with values ​​of 0). In some examples, the on-time of the OOK sampled sequence may correspond to a length of M / K samples, where M is an integer multiple of K, such that each on-off duration of the OOK sampled sequence has the same length. In some examples, , where b=0 indicates an on-time of length M. Therefore, the OOK sampling sequence can include K different on-off levels (e.g., durations).

[0099] However, in some examples, OFDM-based OOK and OFDM-based FSK signals may require relatively high sampling rates. That is, a relatively high sampling rate can be used to capture a suitable amount of signal energy from the OFDM-based OOK / FDM waveform. For example, using an OFDM-based OOK signal, a single bit can be sent per OFDM symbol. In other words, 1 bit can be sent per OFDM symbol via OOK. In this example, for a 30 kHz SCS, the achievable data rate for an OFDM-based OOK signal could be approximately 28 kilobits per second (28 kbps). To reduce frequency-selective signal fading, device 205-a can extend the signal's spectrum (e.g., before passing the OOK signal through a DFT-S-OFDM waveform generator) by inserting a random phase (e.g., random QPSK) during the on-time. In such an example, device 205-a can generate an OFDM-based OOK signal with a bandwidth of approximately 4.32 MHz (e.g., assuming the OOK signal occupies approximately 12 RBs in the frequency domain). In some examples, to capture an appropriate amount of signal energy from the resulting OFDM-based OOK signal, device 205-b may sample the OFDM-based OOK signal at 4.32 MHz (or higher). A similar sampling rate can be used for OFDM-based FSK signals. However, device 205-b may not support such sampling rates. For example, device 205-b may support a sampling rate of approximately 2.16 MHz. In some examples, using a lower sampling rate (e.g., approximately 2.16 MHz) for the OFDM-based OOK signal (or OFDM-based FSK signal) may degrade performance (e.g., regardless of the OOK signal's data rate of 28 kbps). In such examples, it is desirable to generate a signal with a relatively large bandwidth and a relatively small receiver sampling rate, and to detect this signal without FFT (e.g., at the receiver, such as device 205-b, which may not support FFT operation).

[0100] In some examples, as described herein, modulation schemes for chirped WUS can provide a framework for generating WUS waveforms using chirped signals with OOK or FSK, or both. For example, such techniques enable device 205-b to generate relatively low-power waveforms based on (OFDM-compatible) chirped signals. In some examples, device 205-a can use one or more modulation schemes for chirped WUS, as described herein, to generate chirped LP-WUS or other types of signals detectable by ambient IoT and other low-power devices. In other words, such techniques enable device 205-a to use chirped signals combined with OOK and / or FSK (e.g., embedded in an OFDM time / frequency grid so that the chirped signal can be OFDM-compatible) to transmit information for LP-WUS and other ambient IoT use cases.

[0101] For example, device 205-a may use OOK or FSK, or both, to modulate the set of information bits. Device 205-a may use a chirped signal and the modulated set of information bits to generate a WUS waveform 215 (e.g., an LP-WUS waveform). Device 205-a may transmit the WUS waveform 215 via at least a portion of the WUS bandwidth (e.g., BW 240) and a portion of the WUS duration (e.g., duration 245). In some examples, the WUS waveform 215 may occupy at least a portion of BW 240 and at least a portion of duration 245(T) according to a pattern. This pattern may be based on the modulated set of information bits. For example, a portion of BW 240 and a portion of duration 245 (e.g., OFDM symbols) may be based on the modulated set of information bits (e.g., based on the corresponding values ​​of one or more bits indicated via the WUS waveform 215). In some examples, device 205-b may detect the WUS waveform 215 via LP-WUR 225. In such examples, device 205-b can transition from an idle mode (e.g., idle state or low power state) to an active mode (e.g., active state). When operating in active mode, device 205-b can receive message 235 via main radio component 220. In some examples, device 205-a can be an example of a network node. In this example, message 235 can be an example of a downlink message (e.g., a downlink grant scheduling downlink or uplink communication between device 205-a and device 205-b). In some other examples, device 205-a can be an example of a UE. In this example, message 235 can be an example of a sidelink message (or uplink message) or another type of message detectable via device 205-b. In some examples, WUS waveform 215 is generated by using a chirped signal with OOK or FSK or both, and WUS waveform 215 is relatively robust to frequency-selective signal fading (or interference bursts). Additionally, device 205-b can detect WUS waveform 215 at a relatively low sampling rate (e.g., a sampling rate proportional to the data rate rather than the total bandwidth), which can lead to improved performance and other benefits.

[0102] Figure 3 An example of a WUS waveform diagram 300 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. The WUS waveform diagrams 300 (e.g., WUS waveform diagrams 300-a, 300-b, 300-c, and 300-d) may be implemented in one or more aspects of wireless communication system 100 and wireless communication system 200. For example, WUS waveform diagrams 300-a and 300-b may be implemented at a first device, which may be a... Figure 1 and Figure 2Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced. Additionally, WUS waveform diagrams 300-c and 300-d may be implemented at a second device, which may be a device provided by… Figure 1 and Figure 2 Examples of devices (e.g., UEs) described in this figure are illustrated and referenced.

[0103] In some examples, the first device may use a chirped signal and OOK modulation to generate the waveform. That is, the first device may support chirped continuous-frequency WUS waveforms masked by OOK. For example, the first device is an example of a transmitter that can generate a WUS waveform based on WUS waveform diagrams 300-a and 300-b. In this example (e.g., on the transmitter side), the first device may support the use of a chirped signal to generate the WUS waveform. For example, the first device may use a chirped signal with a positive slope (e.g., a frequency signal that increases monotonically and linearly) or a chirped signal with a negative slope (e.g., a frequency signal that decreases monotonically and linearly) to generate the WUS waveform. That is, the first device may support the use of frequency signals that increase or decrease monotonically and linearly.

[0104] In some examples, the first device may support the use of a frequency signal that monotonically increases (or decreases) linearly during at least a portion of duration 320. Duration 320 may be an example of a symbol, such as a WUS symbol (e.g., an LP-WUS symbol, an OFDM symbol with 1 bit per symbol). Additionally, the first device may support the use of a frequency signal that monotonically increases (or decreases) linearly during at least a portion of a bandwidth (e.g., BW315). BW315 may be an example of a WUS bandwidth (e.g., an LP-WUS bandwidth, approximately 4.32 MHz). In some examples, the first device may be configured to use BW315 (or a portion of BW315) to generate (e.g., transmit) a WUS waveform. For example, the first device may receive an indication (e.g., via control signaling) that at least a portion of BW315 is used to generate a WUS waveform, or the first device may be otherwise configured to use at least a portion of BW315 to generate a WUS waveform. Additionally, the first device may be configured to use at least a portion of duration 320 to generate (e.g., transmit) a WUS waveform. For example, the first device may receive an indication (e.g., via control signaling) that at least a portion of the duration 320 is used to generate a WUS waveform, or the first device may be otherwise configured to use at least a portion of the duration 320 to generate a WUS waveform.

[0105] In some examples, the device may use OOK modulation in conjunction with a chirped signal to generate a WUS waveform according to a pattern. That is, the generated WUS waveform may occupy at least a portion of BW 315 during at least a portion of duration 320 according to the pattern. In such examples, the WUS waveform may include a chirped signal (e.g., a frequency signal that increases (or decreases) monotonically and linearly). In other words, the first device may use OOK modulation in conjunction with a chirped signal such that a portion of the chirped signal in the time domain (e.g., half of the chirped signal, the WUS waveform) may be a frequency signal that increases (or decreases) monotonically and linearly, and the remaining portion of the chirped signal (e.g., the other half of the chirped signal) may be empty. That is, during at least one of portions 325-a and 325-b, the chirped signal may be non-empty (and include the WUS waveform), and during the remaining portion (e.g., the other of portions 325-a and 325-b), the chirped signal may be empty. In other words, the non-empty portion of a chirped signal (e.g., a WUS waveform) can be referred to as a non-empty sub-chirp. In some examples, each non-empty sub-chirp may occupy at least a portion of the duration 320 (e.g., one, half, or 1 / M). That is, each WUS waveform may occupy at least a portion of the duration 320 (e.g., one, half, or 1 / M). In some examples, the duration 320(T) may correspond to one OFDM symbol duration (e.g., approximately 33 microseconds, excluding the cyclic prefix (CP)). In such examples, each non-empty sub-chirp may occupy one OFDM symbol duration, half of the OFDM symbol duration, or 1 / M of the OFDM symbol duration (e.g., where M is an integer greater than 2). That is, each WUS waveform may occupy one OFDM symbol duration, half of the OFDM symbol duration, or 1 / M of the OFDM symbol duration (e.g., where M is an integer greater than 2).

[0106] In some examples, the position of the WUS waveform can indicate the value of a bit. In other words, the position of the non-empty chirp can indicate the value of a bit. That is, different non-empty chirp positions (in the time domain) can convey different information (e.g., bit 0 vs. bit 1). For example, a first device can use OOK to modulate a set of information bits. The first device can then use the modulated set of information bits and the chirp signal to generate a WUS waveform. In this example, the position of the WUS waveform in time (e.g., all or part of the duration 320) and the position of the WUS waveform in frequency (e.g., all or part of BW 315) can be based on a pattern based on the modulated set of information bits.

[0107] WUS waveform diagram 300-a illustrates a WUS waveform 310-a (e.g., a non-null chirp) that occupies a portion 325-a of duration 320 and a BW 315. In this example, WUS waveform 310-a may indicate bits with a value of 0 (e.g., it may indicate bit 0). That is, depending on the pattern of bits with a value of 0, WUS waveform 310-a may be located within portion 325-a and BW 315. In this example, WUS waveform 310-a ( This can be described according to the following equation 1:

[0108]

[0109] Additionally, WUS waveform diagram 300-b illustrates a WUS waveform 310-b (e.g., a non-null chirp) occupying portion 325-b and BW 315. In this example, WUS waveform 310-b indicates bits with a value of 1 (e.g., indicator bit 1). That is, depending on the pattern of bits with a value of 1, WUS waveform 310-b can be located within portion 325-b and BW 315. In this example, WUS waveform 310-b ( This can be described according to the following equation 2:

[0110]

[0111] In some examples, the slope of WUS waveform 310-a or WUS waveform 310-b can be such that WUS waveform 310-a and WUS waveform 310-b occupy BW 315. In other words, the slope of the non-empty chirp can be selected such that the non-empty chirp occupies BW315 (e.g., LP-WUS bandwidth).

[0112] In some examples, the second device may be a receiver that can monitor the WUS waveform according to WUS waveform diagrams 300-c and 300-d. For example, the second device may use (e.g., be configured to use) at least a portion of BW 315 and at least a portion of duration 320 to monitor the WUS waveform. The second device may receive an indication (e.g., via control signaling) that at least a portion of BW 315 is used for monitoring the WUS waveform, or the second device may be otherwise configured to use at least a portion of BW 315 for monitoring the WUS waveform. Additionally, the second device may use (e.g., be configured to use) at least a portion of duration 320 to monitor the WUS waveform. For example, the second device may receive an indication (e.g., via control signaling) that at least a portion of duration 320 is used for monitoring the WUS waveform, or the second device may be otherwise configured to use at least a portion of duration 320 for monitoring the WUS waveform. In such an example (e.g., on the receiver side), the second device may dechirp the received WUS waveform, use one or more low-pass filters (LPFs) to filter out the baseband (BB) signal, and decode the received WUS waveform (e.g., via a decoding method such as a decoding method for Manchester code). In some examples, the second device may use a relatively low sampling rate. That is, for example, since the BB signal bandwidth is relatively small after the dechirping operation, the sampling rate used at the second device may be relatively low. Therefore, the second device may use an LPF (such as an LPF with approximately 3 dB bandwidth (e.g., an LPF with a bandwidth less than BW 315, an LPF with a bandwidth of several hundred kHz)) to filter out the chirped WUS waveform.

[0113] In some examples, the second device may dechirp non-null chirps (e.g., WUS waveforms). For example, the second device may dechirp the WUS waveforms illustrated in WUS waveform diagrams 300-a and 300-b, and the resulting WUS waveforms (e.g., DC signals) may be illustrated in WUS waveform diagrams 300-c and 300-d, respectively. For example, the second device may receive WUS waveform 310-a and (e.g., perform a dechirping operation on WUS waveform 310-a) to obtain WUS waveform 311-a. In this example, WUS waveform 311-a may indicate bits with a value of 0 (e.g., indicator bit 0). That is, the position of WUS waveform 311-a may be based on a pattern of bits with a value of 0. In other words, the second device can multiply the WUS waveform 310-a (described according to Equation 1) by the dechirped signal, which can be described according to the following Equation 3 to obtain the WUS waveform 311-a:

[0114]

[0115] Therefore, the WUS waveform 311-a can be described according to the following equation 4:

[0116]

[0117] In some other examples, the second device may receive the WUS waveform 310-b and (e.g., perform a dechirping operation on the WUS waveform 310-b) to obtain the WUS waveform 311-b. In this example, the WUS waveform 311-b may indicate bits with a value of 1 (e.g., indicate bit 1). That is, the position of the WUS waveform 311-b may be based on the pattern of bits with a value of 1. In other words, the second device may multiply the WUS waveform 310-b (e.g., as described according to Equation 2) by a dechirped signal (as described according to Equation 3) to obtain the WUS waveform 311-b. In this example, the WUS waveform 311-b may be described according to the following Equation 5:

[0118]

[0119] In some examples, the second device can detect the WUS waveform 310 at a relatively low sampling rate, which can lead to improved performance at the second device and other benefits.

[0120] Figure 4 An example of a WUS waveform diagram 400 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 400 (e.g., WUS waveform diagrams 400-a, 400-b, 400-c, and 400-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, and WUS waveform diagram 300. For example, WUS waveform diagrams 400-a and 400-b may be implemented at a first device, which may be a... Figures 1 to 3 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced. Additionally, WUS waveform diagrams 400-c and 400-d may be implemented at a second device, which may be a device provided by… Figures 1 to 3 Examples of devices (e.g., UEs) described in this figure are illustrated and referenced.

[0121] In some examples, the first device may use chirped signals and FSK modulation to generate the waveform. That is, the first device may support FSK-like chirped continuous-frequency WUS waveforms. For example, the first device is an example of a transmitter that can generate a WUS waveform based on WUS waveform diagrams 400-a and 400-b. That is, the first device may use multiple (e.g., different) chirped signals in the frequency domain to transmit information. For example, the first device may use chirped signals with a positive slope (e.g., a frequency signal that increases monotonically and linearly) or chirped signals with a negative slope (e.g., a frequency signal that decreases monotonically and linearly) to generate the WUS waveform. In some examples, the first device may support the use of a frequency signal that increases or decreases monotonically and linearly in at least a portion of duration 420. Duration 420 may be an example of symbols, such as WUS symbols (e.g., LP-WUS symbols (e.g., OFDM symbols with 1 bit per symbol)).

[0122] like Figure 4 As illustrated in the example, the first device may use (e.g., be configured to use) at least a portion of duration 420 to generate a WUS waveform. For example, the first device may receive an indication of at least a portion of duration 420 (e.g., via control signaling), or the first device may be otherwise configured to use at least a portion of duration 420. Additionally, the first device may use (e.g., be configured to use) at least a portion of BW 415 to generate a WUS waveform. For example, the first device may receive an indication of at least a portion of BW 415 (e.g., via control signaling), or the first device may be otherwise configured to use at least a portion of BW 415 for generating a WUS waveform.

[0123] In some examples, the device may use FSK modulation with a chirped signal to generate a WUS waveform according to a pattern. That is, the generated WUS waveform may occupy at least a portion of BW 415 for at least a portion of the duration 420 according to the pattern. In such examples, the WUS waveform may include a chirped signal (e.g., a frequency signal that increases (or decreases) monotonically and linearly). In other words, the first device may use FSK modulation with a chirped signal such that a portion of the chirped signal in the frequency domain (e.g., half of the chirped signal, the WUS waveform) may be a frequency signal that increases (or decreases) monotonically and linearly, and the remaining portion of the chirped signal (e.g., the other half of the chirped signal) may be empty. That is, the chirped signal may be non-empty (and include the WUS waveform) for at least a portion of the duration of BW 415, and the chirped signal may be empty for the remaining duration of BW 415. Figure 4As shown in the example, the chirp signal can be non-empty within half of BW 415 (e.g., one of BW / 2 and -BW / 2), and can be empty during the other half of BW 415 (e.g., the other of BW / 2 and -BW / 2). The non-empty portion of the chirp signal can be referred to as a non-empty sub-chirp. Figure 4 In the example, each non-empty chirp may occupy at least a portion of BW 415 (e.g., one, half, or 1 / M). For example, BW 415 may be an example of LP-WUS bandwidth (e.g., approximately 4.32 MHz), and the slope of the non-empty chirp may be selected such that the non-empty chirp occupies half of the LP-WUS bandwidth (e.g., LP-WUS ½ BW). In other words, each non-empty chirp may occupy a duration of 420 (e.g., one OFDM symbol duration) and half of the LP-WUS bandwidth (e.g., approximately 2.16 MHz).

[0124] In some examples, the position of the WUS waveform can indicate the value of a bit. In other words, the position of the non-null chirp can indicate the value of a bit. That is, different non-null chirp positions (in the frequency domain) can convey different information (e.g., bit 0 vs. bit 1). For example, a first device can use FSK to modulate a set of information bits. The first device can then use the modulated set of information bits and the chirp signal to generate a WUS waveform. In this example, the temporal position of the WUS waveform (e.g., all or part of duration 420) and the frequency position of the WUS waveform (e.g., all or part of BW 415) can be based on a pattern based on the modulated set of information bits. In other words, whether the first half (e.g., BW / 2) or the second half (e.g., -BW / 2) of BW 415 is occupied (e.g., used, activated) by the WUS waveform can depend on the value of the information bit.

[0125] WUS waveform diagram 400-a illustrates a WUS waveform 410-a (e.g., a non-null chirp) occupying -BW / 2 and a duration of 420(T). In this example, WUS waveform 410-a may indicate bits with a value of 0 (e.g., indicator bit 0). That is, depending on the pattern of bits with a value of 0, WUS waveform 410-a may be located within the second half of BW 415 (e.g., -BW / 2) and within a duration of 420. In this example, WUS waveform 410-a ( This can be described according to the following equation 6:

[0126]

[0127] Additionally, WUS waveform diagram 400-b illustrates a WUS waveform 410-b occupying BW / 2 (e.g., a non-empty chirp). In this example, WUS waveform 410-b may indicate a bit with a value of 1 (e.g., indicator bit 1). That is, depending on the pattern of bits with a value of 1, WUS waveform 410-b may be located within the first half of BW 415 (e.g., BW / 2) and within a duration of 420. In this example, WUS waveform 410-b ( This can be described according to the following equation 7:

[0128]

[0129] In some examples, the second device may be a receiver that monitors the WUS waveform according to WUS waveform diagrams 400-c and 400-d. In this example, the second device may use (e.g., be configured to use) at least a portion of BW 415 to monitor the WUS waveform. For example, the second device may receive an indication (e.g., via control signaling) that at least a portion of BW 415 is used for monitoring the WUS waveform, or the second device may be otherwise configured to use at least a portion of BW 415 for monitoring the WUS waveform. Additionally, the second device may use (e.g., be configured to use) at least a portion of duration 420 to monitor the WUS waveform. For example, the second device may receive an indication (e.g., via control signaling) that at least a portion of duration 420 is used for monitoring the WUS waveform, or the second device may be otherwise configured to use at least a portion of duration 420 for monitoring the WUS waveform. In this example (e.g., on the receiver side), the second device may dechirp the received WUS waveform and use one or more LPFs. For example, to determine which frequency position the first device uses (e.g., to transmit a WUS waveform), the second device can use two LPFs, which can be targeted at multiple (e.g., different) candidate frequencies (e.g., BW / 4, -BW / 4). The second device can decode the received WUS waveform (e.g., via a decoding method such as a decoding method for Manchester code). In some examples, the second device can use a relatively low sampling rate. That is, for example, because the bandwidth of the BB signal after dechirping is relatively small, the sampling rate used at the second device may be relatively low.

[0130] In some examples, the second device may dechirp non-null chirps (e.g., WUS waveforms). For example, the second device may dechirp the WUS waveforms illustrated in WUS waveform diagrams 400-a and 400-b, and the resulting signals (e.g., DC signals) may be illustrated in WUS waveform diagrams 400-c and 400-d, respectively. For example, the second device may receive WUS waveform 410-a and (e.g., perform a dechirping operation on WUS waveform 410-a) to obtain WUS waveform 411-a. In this example, WUS waveform 411-a may indicate bits with a value of 0 (e.g., indicator bit 0). That is, the position of WUS waveform 411-a may be based on a pattern of bits with a value of 0. In some other examples, the second device may receive WUS waveform 410-b and (e.g., perform a dechirping operation on WUS waveform 410-b) to obtain WUS waveform 411-b. In this example, WUS waveform 411-b can indicate bits with a value of 1 (e.g., indicator bit 1). That is, the position of WUS waveform 411-b can be determined based on the pattern of bits with a value of 1. In some examples, the second device can detect WUS waveform 410 at a relatively low sampling rate, which can lead to improved performance at the second device and other benefits.

[0131] Figure 5 An example of a WUS waveform diagram 500 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 500 (e.g., WUS waveform diagrams 500-a, 500-b, 500-c, and 500-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, and WUS waveform diagram 400. For example, WUS waveform diagrams 500-a and 500-b may be implemented at a first device, which may be a... Figures 1 to 4 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced. Additionally, WUS waveform diagrams 500-c and 500-d may be implemented at a second device, which may be a device provided by… Figures 1 to 4 Examples of devices (e.g., UEs) described in this figure are illustrated and referenced.

[0132] In some examples, the first device can use a chirped signal with OOK and FSK modulation to generate the waveform. That is, the device can support a combination of OOK and FSK masking for the WUS waveform. For example, the first device can be an example of a transmitter that can generate a WUS waveform based on WUS waveform diagrams 500-a and 500-b. The first device can support generating the WUS waveform using a chirped signal with a positive slope (e.g., a frequency signal that increases monotonically and linearly) or a chirped signal with a negative slope (e.g., a frequency signal that decreases monotonically and linearly). Figure 5 As shown in the example, the first device may support the use of a frequency signal that increases (or decreases) monotonically and linearly during at least a portion of the duration 520. The duration 520 may be an example of a symbol, such as a WUS symbol (e.g., an LP-WUS symbol, an OFDM symbol with 1 bit per symbol).

[0133] like Figure 5 As illustrated in the examples, the first device may use (e.g., be configured to use) at least a portion of BW 515 to generate a WUS waveform. In some examples, BW 515 may be an example of an LP-WUS bandwidth (e.g., approximately 4.32 MHz). Additionally, the first device may use (e.g., be configured to use) at least a portion of duration 520 to generate the WUS waveform. In some examples, the device may use OOK and FSK modulation along with a chirped signal to generate the WUS waveform according to a pattern. That is, the generated WUS waveform may occupy at least a portion of BW 515 during at least a portion of duration 520 according to the pattern. In such examples, the WUS waveform may include a chirped signal (e.g., a frequency signal that increases (or decreases) monotonically and linearly). In other words, the first device can use OOK and FSK modulation with the chirped signal such that a portion of the chirped signal in the time domain (e.g., half of the chirped signal, the WUS waveform) can be a frequency signal that increases (or decreases) monotonically and linearly, and the remaining portion of the chirped signal (e.g., the other half of the chirped signal) can be empty. That is, during at least one of portions 525-a and 525-b, the chirped signal can be non-empty (e.g., and includes the WUS waveform), and during the remaining portion (e.g., the other of portions 525-a and 525-b), the chirped signal can be empty. Although Figure 5The examples illustrate a non-empty chirp (e.g., a WUS waveform) that occupies half of duration 520 (e.g., either portion 525-a or portion 525-b), but the non-empty chirp can occupy other portions of duration 520, such as 0.2 or 0.8 of duration 520, etc. In some examples, the position of the WUS waveform can indicate the bit value. In other words, the position of the non-empty chirp can indicate the bit value. That is, different non-empty chirs (or symbols) can occupy different frequency ranges (e.g., different portions of BW 515). In some examples, the slope of the non-empty chirp (e.g., the WUS waveform) can be chosen such that the non-empty chirp occupies half of BW 515 (e.g., BW / 2, -BW / 2). For example, BW 515 could be an example of LP-WUS bandwidth, and the slope of the WUS waveform could be selected such that the WUS waveform occupies half of the LP-WUS bandwidth (e.g., LP-WUS½).

[0134] In some examples, the position of the WUS waveform can indicate the value of a bit. In other words, the position of the non-null chirp can indicate the value of a bit. That is, different non-null chirp positions (in the time and frequency domains) can convey different information (e.g., bit 0 versus bit 1). For example, WUS waveform diagram 500-a illustrates a WUS waveform 510-a occupying portions 525-a and -BW / 2 (e.g., a non-null chirp). In this example, WUS waveform 510-a indicates bits with a value of 0 (e.g., indicating bit 0). That is, depending on the pattern of bits with a value of 0, WUS waveform 510-a can be located within the second half of BW 515 (e.g., -BW / 2) and within portion 525-a of duration 520. In this example, WUS waveform 510-a ( This can be described according to the following equation 8:

[0135]

[0136] Additionally, WUS waveform diagram 500-b illustrates a WUS waveform 510-b occupying portion 525-b and BW / 2 (e.g., a non-empty chirp). In this example, WUS waveform 510-b indicates a bit with a value of 1 (e.g., indicator bit 1). That is, depending on the pattern of bits with a value of 1, WUS waveform 510-b may be located within the first half of BW 515 (e.g., BW / 2) and within portion 525-b of duration 520. In this example, WUS waveform 510-b ( This can be described according to the following equation 9:

[0137]

[0138] In some examples, the second device may be a receiver that monitors the WUS waveform according to WUS waveform diagrams 500-c and 500-d. In this example, the second device may use (e.g., configured to use) at least a portion of BW 515 to monitor the WUS waveform. Additionally, the second device may use (e.g., configured to use) at least a portion of duration 520 to monitor the WUS waveform. In this example (e.g., on the receiver side), the second device may dechirp the received WUS waveform, filter out the BB signal using one or more LPFs, and decode the received WUS waveform (e.g., via a decoding method, such as a decoding method for Manchester codes). For example, the second device may use two LPFs (e.g., a first LPF at BW / 4 and a second LPF at -BW / 4). Additionally or alternatively, the second device may use one or more cross-correlation methods to filter out the BB signal. For example, the second device may use multiple (e.g., different) chirped signals to obtain the correlation between the bits and the chirped signals. In this example, the second device can compare the received WUS waveform to a threshold to determine, based on the obtained correlation, whether the received WUS waveform corresponds to a chirped signal with a bit value of 0 (e.g., chirp 0) or a chirped signal with a bit value of 1 (e.g., chirp 1). The second device can perform the correlation in the RF or BB. In some examples, the second device can use a relatively low sampling rate. That is, for example, because the bandwidth of the BB signal after dechirping is relatively small, the sampling rate used at the second device may be relatively low.

[0139] In some examples, the second device may dechirp non-null chirps. For example, the second device may dechirp the WUS waveforms illustrated in WUS waveform diagrams 500-a and 500-b, and the resulting signals (e.g., DC signals) may be shown in WUS waveform diagrams 500-c and 500-d, respectively. For example, the second device may receive WUS waveform 510-a, perform a dechirping operation, and apply a second LPF at -BW / 4 (e.g., applied to WUS waveform 510-a) to obtain WUS waveform 511-a. In this example, WUS waveform 511-a may indicate bits with a value of 0 (e.g., indicator bit 0). That is, the position of WUS waveform 511-a may be based on the pattern of bits with a value of 0. In some other examples, the second device may receive WUS waveform 510-b, perform a dechirping operation, and apply a first LPF at BW / 4 (e.g., on WUS waveform 510-b) to obtain WUS waveform 511-b. In this example, WUS waveform 511-b may indicate bits with a value of 1 (e.g., indicator bit 1). That is, the position of WUS waveform 511-b may be based on the pattern of bits with a value of 1. In some examples, the second device may detect WUS waveform 510 at a relatively low sampling rate, which may result in improved performance at the second device and other benefits.

[0140] Figure 6 An example of a WUS waveform diagram 600 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 600 (e.g., WUS waveform diagrams 600-a, 600-b, 600-c, and 600-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, WUS waveform diagram 400, and WUS waveform diagram 500. For example, WUS waveform diagram 600 may be implemented at a first device, which may be a... Figures 1 to 5 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0141] In some examples, the first device may use a chirped signal with OOK and FSK modulation to generate the waveform. That is, the device may support a combination of OOK and FSK masking for the WUS waveform. For example, the first device may be an example of a transmitter that can generate the WUS waveform according to WUS waveform diagram 600. In some examples of WUS waveform diagram 600, multiple bits may be transmitted per WUS waveform (e.g., per pair of chirps). In some examples, the position of the WUS waveform may indicate the corresponding value of multiple bits. In other words, the position of the non-empty chirp may indicate the corresponding value of multiple bits. That is, different non-empty chirp positions in time or frequency, or both, may transmit different information (e.g., bit 00, bit 01, bit 10, bit 11). For example, the first device may use PPM (Pulse Position Modulation) combined with the chirped signal to transmit multiple (e.g., two) information bits. In this example, the WUS waveform may occupy a portion of duration 620 and a portion of BW 615. In other words, for each code point, a portion of the chirp signal in time and a portion of the chirp signal in frequency can be active (e.g., 1 / 4 of the chirp signal in time and frequency can be active).

[0142] like Figure 6 As shown in the example, the first device may use (e.g., configured to use) a portion of BW 615 to generate a WUS waveform. Additionally, the first device may use (e.g., configured to use) a portion of duration 620. In some examples, the device may use OOK and FSK modulation with a chirped signal to generate the WUS waveform according to a pattern. That is, the generated WUS waveform may occupy a portion of BW 615 during a portion of duration 620 according to the pattern. In this example, the WUS waveform may include a chirped signal (e.g., a frequency signal that increases or decreases monotonically and linearly). In other words, the first device may use OOK and FSK modulation with a chirped signal such that a portion of the chirped signal in the time and frequency domains (e.g., half of the chirp) may be a frequency that increases (or decreases) monotonically and linearly, and the remaining portion of the chirped signal (e.g., the other half of the chirped signal) may be empty. That is, during one of portions 625-a and 625-b, the chirp signal can be non-empty, and during the other of portions 625-a and 625-b, the chirp signal can be empty. Although Figure 6The example illustrates a non-empty chirp occupying half of duration 620 (e.g., the WUS waveform), but the non-empty chirp can occupy other portions of duration 620, such as 0.2 or 0.8 of duration 620. In some examples, the position of the WUS waveform in time and frequency can indicate the value of multiple bits. In other words, the position of the non-empty chirp can indicate the value of multiple bits. That is, different non-empty chirs (or symbols) can occupy different frequency ranges (e.g., different portions of BW 615) and different durations (e.g., portion 625-a or portion 625-b) that can transmit different information (e.g., bit 00, bit 11, bit 01, bit 10). In some examples, the slope of the non-empty chirp (e.g., the WUS waveform) can be selected such that the non-empty chirp occupies half of BW 615 during portion 625-a or portion 625-b (e.g., BW / 2, -BW / 2).

[0143] For example, WUS waveform diagram 600-a illustrates a WUS waveform 610-a (e.g., a non-empty chirp) that occupies the second half (e.g., -BW / 2) of BW 615 during portion 625-a. In this example, WUS waveform 610-a indicates a bit with a value of 00 (e.g., indicator bit 00). That is, depending on the pattern of bits with values ​​of 00, WUS waveform 610-a may be located within the second half (e.g., -BW / 2) of BW 615 and within portion 625-a of duration 620. Additionally, WUS waveform diagram 600-b illustrates a WUS waveform 610-b (e.g., a non-empty chirp) that occupies the first portion (e.g., BW / 2) of BW 615 during portion 625-b. In this example, WUS waveform 610-b indicates a bit with a value of 11 (e.g., indicator bit 11). That is, depending on the pattern of the bit with the value 11, the WUS waveform 610-b can be located within the first half (e.g., BW / 2) of BW 615 and within the portion 625-b of duration 620. WUS waveform diagram 600-c illustrates a WUS waveform 610-c (e.g., a non-null chirp) occupying the first portion (BW / 2) of BW 615 during portion 625-a. In this example, WUS waveform 610-c indicates a bit with the value 01 (e.g., indicator bit 01). That is, depending on the pattern of the bit with the value 01, the WUS waveform 610-c can be located within the first half (e.g., BW / 2) of BW 615 and within the portion 625-a of duration 620. WUS waveform diagram 600-d illustrates a WUS waveform 610-d (e.g., a non-null chirp) occupying the second portion (e.g., -BW / 2) of BW 615 during portion 625-b. In this example, the WUS waveform 610-d indicates a bit with a value of 10 (e.g., indicator bit 10). That is, depending on the pattern of the bit with a value of 10, the WUS waveform 610-d may be located within the second half of BW 615 (e.g., -BW / 2) and within a portion 625-b of the duration 620. In some examples, the second device can detect the WUS waveform 610 at a relatively low sampling rate, which can lead to improved performance at the second device and other benefits.

[0144] Figure 7An example of a WUS waveform diagram 700 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 700 (e.g., WUS waveform diagrams 700-a, 700-b, 700-c, and 700-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, 400, 500, and 600. For example, WUS waveform diagram 700 may be implemented at a first device, which may be a... Figures 1 to 6 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0145] In some examples, the first device may use a chirped signal with OOK and FSK modulation to generate the waveform. That is, the device may support a combination of OOK and FSK masking for the WUS waveform. For example, the first device may be an example of a transmitter that can generate a WUS waveform (e.g., a non-empty chirped signal) based on WUS waveform diagram 700. In some examples of WUS waveform diagram 700, multiple bits may be transmitted per WUS waveform (e.g., per pair of chirs). In some examples, the position of the WUS waveform may indicate the corresponding value of multiple bits. In other words, the position of the non-empty chirp may indicate the corresponding value of multiple bits. That is, different non-empty chirp positions in time or frequency, or both, may transmit different information (e.g., bit 00, bit 01, bit 10, bit 11). For example, the first device may use TDM, where a first portion of duration 720 (e.g., half of duration 720, portion 725-a) may be used to transmit a first value for the first bit, and a second portion of duration 720 (e.g., the other half of duration 720, portion 725-b) may be used to transmit a second value for the second bit. In some examples, duration 720 may be an example of a symbol, such as a WUS symbol (e.g., an LP-WUS symbol, an OFDM symbol with multiple bits per symbol).

[0146] like Figure 7As illustrated in the example, the first device may use (e.g., configured to use) at least a portion of BW 715 to generate a WUS waveform. Additionally, the first device may use (e.g., configured to use) duration 720 to generate a WUS waveform. In some examples, the device may use OOK and FSK modulation along with a chirped signal to generate a WUS waveform according to a mode. That is, depending on the mode, a first portion of the generated WUS waveform may occupy a first portion of BW 715 during a first portion of duration 720 (e.g., portion 725-a), and a second portion of the generated WUS waveform may occupy a second portion of BW 715 during a second portion of duration 720 (e.g., portion 725-b). In other words, the first device can use OOK and FSK modulation with a chirped signal to indicate multiple bits, such that in a first portion of BW 715 (e.g., one of BW / 2 and -BW / 2), a portion of the chirped signal in the time domain (e.g., half of the chirped signal) can be a frequency signal that increases (or decreases) monotonically and linearly, and the remaining portion of the chirped signal (e.g., the other half of the chirped signal) can be empty, and in a second portion of BW 715 (e.g., the other of BW / 2 and -BW / 2), another portion of the chirped signal in the time domain (e.g., half of the chirped signal) can be a frequency signal that increases (or decreases) monotonically and linearly, and the remaining portion of the chirped signal (e.g., the other half of the chirped signal) can be empty. That is, within each of BW / 2 and -BW / 2, the chirp signal can be non-empty during one of portions 725-a and 725-b, and empty during the other of portions 725-a and 725-b. Although Figure 7 The example illustrates a non-empty chirp occupying half of duration 720, but a non-empty chirp can occupy other portions of duration 720, such as 0.2 or 0.8 of duration 720. Additionally, different chirs (or symbols) can occupy different frequency ranges (e.g., different portions of BW 715).

[0147] In some examples, the position of the WUS waveform in time and frequency can indicate the value of multiple bits. In other words, the position of the non-empty chirp can indicate the value of multiple bits. That is, different combinations of non-empty chirps (or symbols) can occupy different frequency ranges (e.g., different portions of BW 715) within portions 725-a and 725-b that can transmit different information (e.g., bits 00, 11, 01, 10). In some examples, the position of the non-empty chirp (e.g., the WUS waveform) within portion 725-a can indicate the first value of the first bit, and the position of the non-empty chirp within portion 725-b can indicate the second value of the second bit. For example, WUS waveform diagram 700-a illustrates a WUS waveform (e.g., a non-empty chirp) occupying the second portion (e.g., -BW / 2) of BW 715 during portion 725-a and during portion 725-b. In this example, a portion of the WUS waveform occurring during portion 725-a indicates a first value of 0, and a portion of the WUS waveform occurring during portion 725-b indicates a second value of 0 (e.g., WUS waveform indicator bit 00 across duration 720). WUS waveform diagram 700-b illustrates a WUS waveform (e.g., a non-empty chirp) that occupies a second portion (e.g., -BW / 2) of BW 715 during portion 725-a and a first portion (e.g., BW / 2) of BW 715 during portion 725-b. In this example, a portion of the WUS waveform occurring during portion 725-a indicates a first value of 0, and a portion of the WUS waveform occurring during portion 725-b indicates a second value of 1 (e.g., WUS waveform indicator bit 01 across duration 720). WUS waveform diagram 700-c illustrates a WUS waveform (e.g., a non-empty chirp) that occupies a first portion (e.g., BW / 2) of BW 715 during portion 725-a and a second portion (e.g., -BW / 2) of BW 715 during portion 725-b. In this example, the portion of the WUS waveform occurring during portion 725-a indicates a first bit value of 1, and the portion of the WUS waveform occurring during portion 725-b indicates a second bit value of 0 (e.g., a WUS waveform indicating bit 10 across duration 720). WUS waveform diagram 700-d illustrates a WUS waveform (e.g., a non-empty chirp) that occupies a first portion (e.g., BW / 2) of BW 715 during both portion 725-a and portion 725-b. In this example, the portion of the WUS waveform occurring during portion 725-a indicates the first bit value 1, and the portion of the WUS waveform occurring during portion 725-b indicates the second bit value 1 (e.g., WUS waveform indicator bit 11 across duration 720).

[0148] Figure 8An example of a WUS waveform diagram 800 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 800 (e.g., WUS waveform diagrams 800-a, 800-b, 800-c, and 800-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, 400, 500, 600, and 700. For example, WUS waveform diagram 800 may be implemented at a first device, which may be a... Figures 1 to 7 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0149] In some examples, the first device may use a chirped signal with OOK to generate a waveform to indicate multiple bits. For example, the first device may be an example of a transmitter that generates a WUS waveform (e.g., a non-empty chirped signal) based on WUS waveform diagram 800. In some examples of WUS waveform diagram 800, multiple bits may be transmitted per WUS waveform. In some examples, the slope of the WUS waveform may indicate a first value for the first bit, and the position of the WUS waveform in the time domain may indicate a second value for the second bit. That is, combinations of different chirped slopes can be used for multi-bit transmission. For example, the first device may transmit information via chirping using different frequency slopes (i.e., slopes). In other words, the first bit may be transmitted via the slope of a non-empty chirped signal, and the second bit via the position of the non-empty chirped signal in the time domain (e.g., via OOK). For example, the first device may use (e.g., configured to use) a BW 815 to generate the WUS waveform. Additionally, the first device may use (e.g., be configured to use) at least a portion of duration 820 (e.g., at least one of portion 825-a or portion 825-b). In some examples, the device may use OOK modulation in conjunction with a chirped signal to generate a WUS waveform according to a pattern. That is, the generated WUS waveform may occupy BW 815 with a slope during a first portion (e.g., portion 825-a) or during a second portion (e.g., portion 725-b) of duration 820, according to the pattern. That is, during one of portions 825-a and 825-b, the chirped signal may be non-empty and have a specific slope, and during the other of portions 825-a and 825-b, the chirped signal may be empty. Although Figure 8 The example illustrates a non-empty chirp that occupies half of the duration 820, but a non-empty chirp can occupy other portions of the duration 820, such as 0.2 or 0.8 of the duration 820.

[0150] In some examples, the position of the WUS waveform (e.g., a non-empty chirp) in the time domain can indicate a first value of the first bit, and the slope of the non-empty chirp can indicate a second value of the second bit. For example, WUS waveform diagram 800-a illustrates a WUS waveform (e.g., a non-empty chirp) with a first slope occupying BW 815 during portion 825-a. In this example, the first slope of the WUS waveform indicates the first bit value 0, and the position of the WUS waveform (e.g., the WUS waveform occupying portion 825-a) indicates the second bit value 0 (e.g., the WUS waveform with the first slope within portion 825-a indicates bit 00). WUS waveform diagram 800-b illustrates a WUS waveform (e.g., a non-empty chirp) with a first slope occupying BW 815 during portion 825-b. In this example, the first slope of the WUS waveform indicates a first bit value of 0, and the position of the WUS waveform (e.g., the WUS waveform occupying portion 825-b) indicates a second bit value of 1 (e.g., WUS waveform indicator bit 01 with the first slope within portion 825-b). WUS waveform diagram 800-c illustrates a WUS waveform with a second slope occupying BW 815 during portion 825-a (e.g., a non-empty chirp). In this example, the second slope of the WUS waveform indicates a first bit value of 1, and the position of the WUS waveform (e.g., the WUS waveform occupying portion 825-a) indicates a second bit value of 0 (e.g., WUS waveform indicator bit 10 with the second slope within portion 825-a). WUS waveform diagram 800-d illustrates a WUS waveform with a second slope occupying BW 815 during portion 825-b (e.g., a non-empty chirp). In this example, the second slope of the WUS waveform indicates the first bit value 1, and the position of the WUS waveform (e.g., the WUS waveform occupying part 825-b) indicates the second bit value 1 (e.g., the WUS waveform with the second slope within part 825-b indicates bit 11).

[0151] Figure 9 An example of a WUS waveform diagram 900 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 900 (e.g., WUS waveform diagrams 900-a, 900-b, 900-c, and 900-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, 400, 500, 600, 700, and 800. For example, WUS waveform diagram 900 may be implemented at a first device, which may be a... Figures 1 to 8 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0152] In some examples, the first device may use a chirped signal with FSK to generate a waveform to indicate multiple bits. For example, the first device may be an example of a transmitter that generates a WUS waveform (e.g., a non-empty chirped signal) based on a WUS waveform diagram 900. In some examples of the WUS waveform diagram 900, multiple bits may be transmitted per WUS waveform. In some examples, the slope of the WUS waveform may indicate a first value for the first bit, and the position of the WUS waveform in the frequency domain may indicate a second value for the second bit. That is, combinations of different chirped slopes can be used for multi-bit transmission. For example, the first device may transmit information via chirping using different frequency slopes (i.e., slopes). In some examples, the first bit may be transmitted via the slope of a non-empty chirped signal, and the second bit via the position of the non-empty chirped signal in the frequency domain (e.g., via FSK). For example, the first device may use (e.g., configured to use) at least a portion of a BW 915 to generate the WUS waveform. Additionally, the first device can use (e.g., be configured to use) a duration of 920 to generate a WUS waveform.

[0153] In some examples, the device may use FSK modulation in conjunction with a chirped signal to generate a WUS waveform according to a pattern. That is, the generated WUS waveform may occupy either the first portion (e.g., BW / 2) or the second portion (e.g., -BW / 2) of BW 915 with a slope during a first portion (e.g., portion 825-a) of duration 820 and during a second portion (e.g., portion 725-b) of duration 720, according to the pattern. Specifically, during one of the first and second portions of BW 915 (e.g., one of BW / 2 and -BW / 2), the chirped signal may be non-empty and have a specific slope, and during the other portion (e.g., one of BW / 2 and -BW / 2), the chirped signal may be empty. Although Figure 9 The example illustrates a non-empty chirp that occupies half of the BW 915, but a non-empty chirp can occupy other parts of the BW 915, such as 0.2 or 0.8 of the BW 915, etc.

[0154] In some examples, by using FSK modulation, the first device can divide the chirped signal such that a portion of the chirped signal in the frequency domain (e.g., half of the chirped signal) can be a frequency signal that increases (or decreases) monotonically and linearly, and the remaining portion (e.g., half) of the chirped signal can be empty. In some examples, the position of the WUS waveform (e.g., a non-empty chirped signal) in the frequency domain can indicate a first value of the first bit, and the slope of the non-empty chirped signal can indicate a second value of the second bit. For example, WUS waveform diagram 900-a illustrates a WUS waveform (e.g., a non-empty chirped signal) with a first slope that occupies a first portion (e.g., BW / 2) of BW 915 across a duration 920. In this example, the first slope of the WUS waveform indicates a first bit value of 0, and the position of the WUS waveform (e.g., a WUS waveform occupying BW / 2) indicates a second bit value of 0 (e.g., a WUS waveform with a first slope within BW / 2 indicates bit 00). WUS waveform diagram 900-b illustrates a WUS waveform (e.g., a non-empty chirp) with a first slope that occupies the second portion (e.g., -BW / 2) of BW 915 across a duration 920. In this example, the first slope of the WUS waveform indicates a first bit value of 0, and the position of the WUS waveform (e.g., a WUS waveform occupying BW / 2) indicates a second bit value of 1 (e.g., a WUS waveform with a first slope within -BW / 2 indicates bit 01). WUS waveform diagram 900-c illustrates a WUS waveform (e.g., a non-empty chirp) with a second slope that occupies the first portion (e.g., BW / 2) of BW 915 within portions 925-a and 925-b. In this example, the second slope of the WUS waveform indicates the first value 1, and the position of the WUS waveform (e.g., a WUS waveform occupying BW / 2 during portion 925-a and portion 925-b) indicates the second value 0 (e.g., WUS waveform indicator bit 10 with the second slope within BW / 2). WUS waveform diagram 900-d illustrates a WUS waveform with a second slope (e.g., a non-empty chirp) occupying the second portion (e.g., -BW / 2) of BW 915 within portions 925-a and 925-b. In this example, the second slope of the WUS waveform indicates the first value 1, and the position of the WUS waveform (e.g., a WUS waveform occupying -BW / 2 during portion 925-a and portion 925-b) indicates the second value 1 (e.g., WUS waveform indicator bit 11 with the second slope within -BW / 2).

[0155] Figure 10A and Figure 10BAn example of a WUS waveform diagram 1000 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. The WUS waveform diagram 1000 (e.g., WUS waveform diagram 1000-a, WUS waveform diagram 1000-b, WUS waveform diagram 1000-c, and WUS waveform diagram 1000-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, WUS waveform diagram 400, WUS waveform diagram 500, WUS waveform diagram 600, WUS waveform diagram 700, WUS waveform diagram 800, and WUS waveform diagram 900. For example, the WUS waveform diagram 1000 may be implemented at a first device, which may be a... Figures 1 to 9 Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0156] In some examples, the first device may use chirped signals with multiple (e.g., different) slopes to generate a waveform to indicate multiple bits. For example, the first device may be an example of a transmitter that can generate a WUS waveform (e.g., a non-empty chirped signal) based on WUS waveform diagram 1000. Figure 10A As shown in the examples, the first device can use multiple (e.g., different) positive slopes to generate a WUS waveform to indicate different bits. For example, WUS waveform diagram 1000-a illustrates a WUS waveform with a first slope (e.g., a non-empty chirp) occupying BW1015 during duration 1020. In this example, the first slope of the WUS waveform indicates a bit value of 0. WUS waveform diagram 1000-b illustrates a WUS waveform with a second slope (e.g., a non-empty chirp) occupying BW1015 during portions 1025-a and 1025-b of duration 1020. In this example, the second slope of the WUS waveform indicates a bit value of 1. Although Figure 10A The example illustrates using multiple positive slopes to generate a WUS waveform, but the first device can also use multiple (e.g., different) negative slopes to generate a WUS waveform.

[0157] like Figure 10B As shown in the examples, the first device can use a positive slope or a negative slope to generate a WUS waveform to indicate different bits (e.g., a positive slope indicates the value of the bit, while a negative slope indicates another value of the bit). For example, WUS waveform diagram 1000-c illustrates a WUS waveform with a positive slope occupying BW 1015 for a duration of 1020 (e.g., a non-empty chirp). In this example, the positive slope indicator bit value of the WUS waveform is 0. WUS waveform diagram 1000-d illustrates a WUS waveform with a negative slope occupying BW 1015 for a duration of 1020 (e.g., a non-empty chirp). In this example, the negative slope indicator bit value of the WUS waveform is 1.

[0158] Figure 11A and Figure 11B An example of a WUS waveform diagram 1100 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. WUS waveform diagrams 1100 (e.g., WUS waveform diagrams 1100-a, 1100-b, 1100-c, and 1100-d) may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, 400, 500, 600, 700, 800, 900, and 1000. For example, WUS waveform diagram 1100 may be implemented at a first device, which may be a... Figures 1 to 9 , Figure 10A and Figure 10B Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0159] like Figure 11A As illustrated in the examples, the first device can generate a WUS waveform using the same slope, the same frequency range, and multiple (e.g., different) time-domain modes for different bits. For example, WUS waveform diagram 1100-a illustrates a WUS waveform with a slope (e.g., a non-empty chirp) occupying BW 1115 during a portion 1125-b of duration 1120. In this example, the WUS waveform occupying portion 1125-b of duration 1120 indicates a bit value of 0. WUS waveform diagram 1100-b illustrates a WUS waveform with the same slope (e.g., a non-empty chirp) occupying BW 1115 during a portion 1125-a of duration 1120. In this example, the WUS waveform occupying portion 1125-a of duration 1120 indicates a bit value of 1.

[0160] like Figure 11BAs illustrated in the examples, the first device can generate a WUS waveform using the same slope, the same frequency range, the same time-domain pattern, and multiple (e.g., different) frequency-domain start points. For example, WUS waveform diagram 1100-c illustrates a WUS waveform (e.g., a non-empty chirp) with a slope occupying BW 1115 during a duration of 1120 with a first frequency-domain offset (e.g., a frequency-domain start point) of BW / 2. That is, the WUS waveform occupies the duration 1120 with a frequency-domain start point of -BW / according to the first frequency offset. In this example, the WUS waveform with the first frequency-domain offset indicates a bit value of 0. WUS waveform diagram 1100-d illustrates a WUS waveform (e.g., a non-empty chirp) with the same slope occupying BW 1115 during a duration of 1120 with a second frequency offset of BW / 4. That is, according to the second frequency offset, the first portion of the WUS waveform occupies part 1125-a of duration 1120 with a frequency domain starting point of BW / 4, and the second portion of the WUS waveform occupies part 1125-b of duration 1120 with a frequency domain starting point of -BW / 4. In this example, the WUS waveform with the second frequency domain offset indicates a bit value of 1.

[0161] Figure 12 An example of a waveform generation process 1200 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure is shown. The waveform generation process 1200 may be implemented in one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, WUS waveform diagram 400, WUS waveform diagram 500, WUS waveform diagram 600, WUS waveform diagram 700, WUS waveform diagram 800, WUS waveform diagram 900, WUS waveform diagram 1000, and WUS waveform diagram 1100. For example, the waveform generation process 1200 may be implemented at a first device, which may be a... Figures 1 to 9 , Figure 10A , Figure 10B , Figure 11A and Figure 11B Examples of devices (e.g., UEs or network nodes) described in this figure are illustrated and referenced.

[0162] In some examples, the first device may use a continuous chirped signal as the basic waveform to modulate OOK and FSK signals (e.g., waveforms). In other examples, the first device may embed the chirped signal into an OFDM system to generate an OFDM-compatible chirp. For example, the first device may use an OFDM system to generate an OFDM-compatible chirped pulse that can be used in LP-WUS (e.g., multiplexed with other OFDM signals). Additionally, the first device may use various types of chirped signals, such as linear chirped signals (e.g., frequency signals that monotonically increase or decrease linearly) or nonlinear chirped signals (e.g., sinusoidal chirped signals, exponential chirps).

[0163] like Figure 12 As shown in the example, the first device can use FSK and chirped signals to generate WUS waveform 1210. WUS waveform 1210 may occupy at least a portion of duration 1220 and BW 1215. In some examples, the first device may sample WUS waveform 215 to obtain a sampling sequence corresponding to a length of M / K samples, where M is an integer multiple of K, such that each on-off state of the sampling sequence has the same length. In some examples, Where b=0 indicates an on-time of length M. Therefore, the sampling sequence can include K different on-off levels (e.g., states).

[0164] In some cases, the on state of a sampling sequence can be represented as a non-zero sampling sequence of length M / K samples (e.g., bits with a value of 1). For example, an on state may include a sampling sequence with a value of 1, and an off state may include a sampling sequence with a value of 0. In some examples, the sampling sequence may be a Zadoff-Chu sequence. That is, a first device may utilize a Zadoff-Chu sequence (e.g., transmitted on CP-OFDM subcarriers) to implement OOK and / or FSK modulation, which can be an example of a type of chirped signal. For example, a device may use a certain number (M) of subcarriers for a WUS waveform, and thus a Zadoff-Chu sequence of length M (e.g., transmitted on CP-OFDM subcarriers) can be determined. It means that among them ,and In this example, the slope of the resulting WUS waveform (e.g., the Zadoff-Chu chirp) can be determined according to the following Equation 10 (e.g., according to the parameter q in Equation 10):

[0165] (10)

[0166] in, The length of can correspond to the relatively largest prime number, such that In some examples, the first device can be configured... The value of 2 is used to generate the length using OOK modulation. Sequence. In some examples, the first device can be set... The value of 1 is used to generate the length using FSK modulation. Sequence. For example, the first device can transmit a sequence of length - The sequence is placed in the upper or lower half of the spectrum to transmit information bits. Additionally, the first device can be configured... The value of 1 is used to generate the length using OOK and FSK modulation. Sequence. In such an example, the first device may multiply the Zadoff-Chu sequence by one of [1, ...,1,0, ...,0] or [0, ...,0,1, ....,1] and then use an OFDM system (e.g., a DFT-S-OFDM framework) to generate on-off and off-on signals.

[0167] The first device may apply transform 1225 to the sampled sequence. In some examples, transform 1225 may be an example of DFT (e.g., M-point DFT), which transforms the sampled sequence from a time-domain sampled sequence to a frequency-domain sampled sequence. The first device may pass the frequency-domain sampled sequence to an OFDM waveform generator 1235 (e.g., a DFT-S-OFDM waveform generator). The OFDM waveform generator 1235 may generate an OFDM waveform 1240 based on a first set of frequency-domain sampled sequences mapped to one or more frequency resources, which may be an example of an FSK signal based on DFT-S-OFDM. In some examples, the OFDM waveform generator may apply IFFT (e.g., using an N-point IFFT, where N > M) to the frequency-domain sampled sequence to generate an OFDM waveform. For example, the OFDM waveform generator may apply IFFT to the frequency-domain sampled sequence to map the sampled sequence in the frequency domain back to the time domain. In other words, the OFDM waveform generator 1235 can be a DFT-S-OFDM waveform generator that includes M-point DFT and N-point IFFT, where N > M. In this way, the first device can generate an OFDM-based FSK signal. This method can also be used to generate an OFDM-based OOK signal.

[0168] Figure 13Examples of process flow 1300 supporting one or more aspects of the present disclosure for a chirped WUS modulation scheme are shown. In some examples, process flow 1300 may implement one or more aspects of wireless communication system 100, wireless communication system 200, WUS waveform diagram 300, WUS waveform diagram 400, WUS waveform diagram 500, WUS waveform diagram 600, WUS waveform diagram 700, WUS waveform diagram 800, WUS waveform diagram 900, WUS waveform diagram 1000, WUS waveform diagram 1100, and waveform generation process 1200. For example, process flow 1300 may include example operations associated with device 1305-a, which may be provided by... Figures 1 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12 Examples of devices (e.g., UE, network entities) illustrated and referenced in this figure are provided. Process flow 1300 may also include example operations associated with device 1305-b, which may be generated by… Figures 1 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12 Examples of devices (e.g., UEs, such as environmental IoT devices) described in this figure are illustrated and referenced. In some examples, such as in which device 1305-a is a UE, process flow 1300 may include example operations associated with device 1305-c, which may be manufactured by... Figures 1 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12 Examples of devices (e.g., network entities) illustrated and referenced in this figure are provided. Operations performed at device 1305 may support improvements in communication between devices 1305, as well as other benefits. In the following description of process flow 1300, operations between devices 1305 may be performed in a different order than in the example shown. Additionally or alternatively, operations performed by device 1305 may be performed in a different order or at different times. Some operations may also be omitted, and some operations may be combined.

[0169] At 1320, device 1305-a can use OOK or FSK, or both, to modulate the set of information bits. In some examples, device 1305-a can modulate the set of information bits according to a pattern. This pattern can be a reference. Figures 2 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12Examples of the described pattern. For instance, a pattern may correspond to a specific value for one or more bits.

[0170] At position 1325, device 1305-a can use a chirped signal and a set of modulated information bits to generate a WUS waveform. The WUS waveform can be generated by... Figures 2 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12 Examples of WUS waveforms (e.g., LP-WUS waveforms) illustrated and described with reference to the figure are shown. For example, a WUS waveform may correspond to an OOK-based waveform, an FSK-based waveform, or an OOK / FSK-based waveform.

[0171] At 1330, device 1305-a can transmit a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration. For example, a WUS waveform can be transmitted such that the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern, which can be based on the set of modulated information bits. The WUS bandwidth can be determined by… Figures 2 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12 The illustration and reference to the diagram depict an example of WUS bandwidth. For instance, the WUS bandwidth could be LP-WUS bandwidth (e.g., approximately 4.32 MHz). Additionally, the duration width could be determined by... Figures 2 to 9 , Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 12 Examples of durations illustrated and described in the figure are provided. For example, the duration could be an example of an LP-WUS symbol (e.g., an OFDM symbol). In some examples, device 1305-a may determine a portion of the WUS bandwidth and a portion of the WUS duration, as well as other parameters of the WUS scheme, based on control signaling.

[0172] For example, at 1310, device 1305-a (e.g., UE) may receive a control message from device 1305-c (e.g., network entity). The control message may indicate a WUS scheme that identifies OOK or FSK or both and identifies the mode. In this example, the set of modulation information bits at 1320 may be based on the control message (e.g., and the transmission of the WUS waveform at 1330 may be based on the mode). Additionally or alternatively, the control message may indicate a WUS scheme that identifies the WUS bandwidth and WUS duration. In this example, device 1305-a may generate a WUS waveform at 1325 based on the control message.

[0173] In some examples, at 1315, device 1305-a (e.g., a UE or network entity) may send a control message to device 1305-b (e.g., a UE, such as an environmental IoT device). The control message may indicate a WUS scheme that identifies OOK or FSK or both and identifies the mode. Additionally or alternatively, the control message may indicate a WUS scheme that identifies the WUS bandwidth and WUS duration. In such examples, device 1305-b may monitor the WUS waveform at 1330 (e.g., and decode the WUS waveform) based on the control message.

[0174] In some examples, a control message received at 1310 may indicate the pattern of the WUS waveform and also how the WUS waveform can be generated (e.g., per-chirp signal). Therefore, a control message sent at 1315 may indicate the pattern of the WUS waveform and also how the WUS waveform (e.g., per-chirp signal) can be decoded. For example, a control message received at 1310 (or sent at 1315) may indicate whether a Zadoff-Chu sequence and DFT (e.g., a DFT-S-OFDM framework) are used at device 1305-a to generate the WUS waveform. In such examples, the control message may also indicate one or more parameters used to generate the Zadoff-Chu sequence (e.g., which parameters are used). For example, the control message may indicate the Zadoff-Chu root value, length, and cyclic shift, as well as other examples of parameters. In some examples, device 1305-b may detect the WUS waveform and transition from an idle state to an active state. When operating in an active state, device 1305-b can communicate with device 1305-a.

[0175] For example, at 1335, device 1305-a may communicate with device 1305-b. In some examples, device 1305-a may be an example of a network entity (e.g., a network node). In such an example, communication at 1335 may include the transmission of downlink messages from device 1305-a. Downlink messages may include authorization to schedule downlink or uplink communication between device 1305-a and device 1305-b. In some other examples, device 1305-a may be an example of a UE. In such an example, communication at 1335 may include the transmission of sidelink messages (or uplink messages) or another type of message that may be detected via device 1305-b. In some examples, device 1305-b may detect WUS waveforms at a relatively low sampling rate (e.g., a sampling rate proportional to the data rate rather than the total bandwidth), which may result in reduced power consumption and reduced frequency-selective signal fading at device 1305-b, among other benefits.

[0176] Figure 14 A block diagram 1400 is shown of a device 1405 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure. Device 1405 may be an example of aspects of a UE 115 or network entity 105 as described herein. Device 1405 may include a receiver 1410, a transmitter 1415, and a communication manager 1420. Device 1405, or one or more components of device 1405 (e.g., receiver 1410, transmitter 1415, communication manager 1420), may include at least one processor that may be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0177] Receiver 1410 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels associated with modulation schemes for chirped WUS). The information may be passed to other components of device 1405. Receiver 1410 may utilize a single antenna or a collection of antennas.

[0178] Transmitter 1415 may provide components for transmitting signals generated by other components of device 1405. For example, transmitter 1415 may transmit information associated with various information channels (e.g., control channels, data channels, information channels associated with modulation schemes for chirped WUS), such as packets, user data, control information, or any combination thereof. In some examples, transmitter 1415 may be co-located with receiver 1410 in a transceiver module. Transmitter 1415 may utilize a single antenna or a collection of multiple antennas.

[0179] The communication manager 1420, receiver 1410, transmitter 1415, or various combinations thereof, or various components thereof, may be examples of components for performing various aspects of the modulation scheme for chirped WUS as described herein. For example, the communication manager 1420, receiver 1410, transmitter 1415, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0180] In some examples, the communication manager 1420, receiver 1410, transmitter 1415, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of the following: a processor, digital signal processor (DSP), central processing unit (CPU), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic device, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to at least one processor may be configured to perform one or more functions described herein (e.g., by executing instructions stored in at least one memory by at least one processor).

[0181] Additionally or alternatively, the communication manager 1420, receiver 1410, transmitter 1415, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 1420, receiver 1410, transmitter 1415, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise individually or jointly to support components for performing the functions described in this disclosure).

[0182] In some examples, the communication manager 1420 may be configured to use or otherwise coordinate with the receiver 1410, transmitter 1415, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 1420 may receive information from the receiver 1410, transmit information to the transmitter 1415, or be integrated in combination with the receiver 1410, transmitter 1415, or both to acquire information, output information, or perform various other operations as described herein.

[0183] Communication manager 1420 may support wireless communication at a device (e.g., device 1405) according to examples disclosed herein. For example, communication manager 1420 is capable of, configured to, or operable to support components for modulating a set of information bits using OOK or FSK, or both. Communication manager 1420 is capable of, configured to, or operable to support components for generating a WUS waveform using a chirped signal and the modulated set of information bits. Communication manager 1420 is capable of, configured to, or operable to support components for transmitting a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0184] Additionally or alternatively, according to the examples disclosed herein, the communication manager 1420 may support wireless communication at a device (e.g., device 1405). For example, the communication manager 1420 may be capable of, configured to, or operable to support components for monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits. The communication manager 1420 may be capable of, configured to, or operable to support components for receiving a WUS waveform based on the monitoring via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the set of information bits. The communication manager 1420 may be capable of, configured to, or operable to support components for transitioning from a first state to a second state based on the received WUS waveform.

[0185] By including or configuring a communication manager 1420 according to an example as described herein, device 1405 (e.g., at least one processor that controls or is otherwise coupled to receiver 1410, transmitter 1415, communication manager 1420, or a combination thereof) can support techniques for reducing power consumption and utilizing communication resources more efficiently.

[0186] Figure 15 A block diagram 1500 is shown of a device 1505 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure. Device 1505 may be an example of aspects of device 1405, UE 115, or network entity 105 as described herein. Device 1505 may include a receiver 1510, a transmitter 1515, and a communication manager 1520. Device 1505, or one or more components of device 1505 (e.g., receiver 1510, transmitter 1515, communication manager 1520), may include at least one processor that may be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0187] Receiver 1510 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels associated with modulation schemes for chirped WUS). The information may be passed to other components of device 1505. Receiver 1510 may utilize a single antenna or a collection of antennas.

[0188] Transmitter 1515 may provide components for transmitting signals generated by other components of device 1505. For example, transmitter 1515 may transmit information associated with various information channels (e.g., control channels, data channels, information channels associated with modulation schemes for chirped WUS), such as packets, user data, control information, or any combination thereof. In some examples, transmitter 1515 may be co-located with receiver 1510 in a transceiver module. Transmitter 1515 may utilize a single antenna or a collection of multiple antennas.

[0189] Device 1505 or its various components may be examples of parts for performing various aspects of a modulation scheme for chirped WUS as described herein. For example, communication manager 1520 may include information bit component 1525, waveform component 1530, WUS component 1535, monitoring component 1540, status component 1545, or any combination thereof. Communication manager 1520 may be examples of aspects of communication manager 1420 as described herein. In some examples, communication manager 1520 or its various components may be configured to use or otherwise cooperate with receiver 1510, transmitter 1515, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, communication manager 1520 may receive information from receiver 1510, transmit information to transmitter 1515, or be integrated in combination with receiver 1510, transmitter 1515, or both to acquire information, output information, or perform various other operations as described herein.

[0190] Communication manager 1520 may support wireless communication at a device (e.g., device 1505) according to examples disclosed herein. Information bit component 1525 is capable of, configured to, or operable to support components for modulating a set of information bits using OOK or FSK, or both. Waveform component 1530 is capable of, configured to, or operable to support components for generating a WUS waveform using a chirped signal and the modulated set of information bits. WUS component 1535 is capable of, configured to, or operable to support components for transmitting a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0191] Additionally or alternatively, according to the examples disclosed herein, the communication manager 1520 may support wireless communication at a device (e.g., device 1505). The monitoring component 1540 is capable of, configured to, or operable to support components for monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits. The WUS component 1535 is capable of, configured to, or operable to support components for receiving a WUS waveform based on the monitoring via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the information bit set. The state component 1545 is capable of, configured to, or operable to support components for transitioning from a first state to a second state based on the received WUS waveform.

[0192] In some cases, the information bit component 1525, waveform component 1530, WUS component 1535, monitoring component 1540, and status component 1545 may each be at least one processor (e.g., a transceiver processor, a radio processor, a transmitter processor, or a receiver processor) or at least part of such at least one processor. The at least one processor may be coupled to at least one memory and execute instructions stored in the at least one memory that enable the at least one processor to perform or facilitate the features of the information bit component 1525, waveform component 1530, WUS component 1535, monitoring component 1540, and status component 1545 discussed herein. The transceiver processor may co-locate with and / or communicate with (e.g., instruct its operation) the transceiver of the device. The radio processor may co-locate with and / or communicate with (e.g., instruct its operation) the radio components of the device (e.g., NR radio components, LTE radio components, Wi-Fi radio components). The transmitter processor may co-locate with and / or communicate with (e.g., instruct its operation) the transmitter of the device. The receiver processor may co-locate with and / or communicate with the receiver of the device (e.g., instruct it to operate).

[0193] Figure 16 A block diagram 1600 is shown of a communication manager 1620 supporting a chirped WUS modulation scheme according to one or more aspects of this disclosure. The communication manager 1620 may be an example of aspects of the communication manager 1420, communication manager 1520, or both as described herein. The communication manager 1620 or its various components may be examples of parts for performing various aspects of the chirped WUS modulation scheme as described herein. For example, the communication manager 1620 may include an information bit component 1625, a waveform component 1630, a WUS component 1635, a monitoring component 1640, a status component 1645, a control message component 1650, a sampling component 1655, a conversion component 1660, an OFDM component 1665, or any combination thereof. These components, or each of their components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses), and such communication may include communication within the protocol layers of the protocol stack, communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack, within devices, components, or virtualization components associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0194] According to the examples disclosed herein, the communication manager 1620 can support wireless communication at the device. The information bit component 1625 is capable of, configured to, or operable to support components for modulating a set of information bits using OOK or FSK, or both. The waveform component 1630 is capable of, configured to, or operable to support components for generating a WUS waveform using a chirped signal and the modulated set of information bits. The WUS component 1635 is capable of, configured to, or operable to support components for transmitting a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0195] In some examples, the control message component 1650 is capable of, configured to, or operable to support a component for sending or receiving control messages for indicating or identifying a WUS scheme of OOK or FSK or both and identifying a mode, wherein the set of modulation information bits is based on the control message and the WUS waveform is sent according to the mode.

[0196] In some examples, the control message component 1650 is capable of, configured to, or operable to support components for sending or receiving control messages for a WUS scheme that indicate one or more parameters associated with the generation of the WUS waveform, wherein the generation of the WUS waveform is based on the control messages.

[0197] In some examples, the control message component 1650 is capable of, configured to, or operable to support components for sending or receiving control messages that indicate the WUS scheme, identifying the WUS bandwidth and WUS duration, and wherein the generation of the WUS waveform is based on the control messages.

[0198] In some examples, the WUS waveform occupies a portion of the WUS bandwidth and the WUS duration. In some examples, the portion of the WUS duration occupied by the WUS waveform indicates the value of the first bit in the pattern-indicating information bit set. In some examples, the WUS waveform occupies a portion of the WUS bandwidth and the WUS duration. In some examples, the portion of the WUS bandwidth occupied by the WUS waveform indicates the value of the first bit in the pattern-indicating information bit set.

[0199] In some examples, the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration. In some examples, depending on the pattern, a portion of the WUS bandwidth and a portion of the WUS duration indicate at least the first bit value for the first bit in the information bit set. In some examples, the portion of the WUS bandwidth and a portion of the WUS duration occupied by the WUS waveform, depending on the pattern, indicate the first bit value for the first bit and the second bit value for the second bit in the information bit set.

[0200] In some examples, the first part of the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration to indicate the first value of the first bit in the set of information bits according to the pattern, and the second part of the WUS waveform occupies a second portion of the WUS bandwidth and a second portion of the WUS duration to indicate the second value of the second bit in the set of information bits according to the pattern.

[0201] In some examples, the chirped signal comprises a monotonic frequency signal having a slope that increases or decreases linearly with time. In some examples, at least the pattern or the slope, or both, indicate a first value of the first bit in the information bit set. In some examples, the slope indicates a first value of the first bit in the information bit set, and the pattern indicates a second value of the second bit in the information bit set.

[0202] In some examples, the first value of the first bit is based on the frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof. In some examples, the chirped signal includes a non-linear chirped signal.

[0203] In some examples, sampling component 1655 is capable of, configured to, or operable to support components for obtaining a time-domain sampled sequence based on sampling the WUS waveform over at least a portion of the WUS bandwidth and a portion of the WUS duration. In some examples, transform component 1660 is capable of, configured to, or operable to support components for applying a transform to the time-domain sampled sequence to generate a frequency-domain sampled sequence. In some examples, OFDM component 1665 is capable of, configured to, or operable to support components for generating an OFDM waveform based on mapping the frequency-domain sampled sequence to a set of multiple resource elements, where the WUS waveform is an OFDM waveform. In some examples, the chirped signal includes a Zadoff-Chu sequence. In some examples, the WUS waveform is an LP-WUS waveform.

[0204] Additionally or alternatively, according to the examples disclosed herein, the communication manager 1620 may support wireless communication at the device. The monitoring component 1640 is capable of, configured to, or operable to support components for monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits. In some examples, the WUS component 1635 is capable of, configured to, or operable to support components for receiving a WUS waveform based on the monitoring via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the information bit set. The state component 1645 is capable of, configured to, or operable to support components for transitioning from a first state to a second state based on the received WUS waveform.

[0205] In some examples, the control message component 1650 is capable of, configured to, or able to operate to support components for sending or receiving control messages for sending or receiving WUS schemes that indicate OOK or FSK or both, wherein the received WUS waveform is based on the control message.

[0206] In some examples, the control message component 1650 is capable of, configured to, or able to operate to support components for sending or receiving control messages for a WUS scheme that indicates WUS bandwidth and WUS duration, and wherein monitoring of WUS bandwidth and WUS duration is based on control messages.

[0207] In some examples, waveform component 1630 is capable of, configured to, or operable to support components for decoding the WUS waveform to obtain a set of information bits. In some examples, waveform component 1630 is capable of, configured to, or operable to support components for performing dechirping or filtering operations, or both, wherein decoding of the WUS waveform is based on dechirping or filtering operations, or both.

[0208] In some examples, waveform component 1630 is capable of, configured to, or operable to support components for identifying the correlation between the WUS waveform and a first type of chirp signal or a second type of chirp signal, wherein decoding of the WUS waveform is based on the correlation.

[0209] In some examples, the WUS waveform occupies a portion of the WUS bandwidth and the WUS duration. In some examples, the portion of the WUS duration occupied by the WUS waveform is the bit value of the first bit in the pattern indicator bit set.

[0210] In some examples, the WUS waveform occupies a portion of the WUS bandwidth and the WUS duration. In some examples, the portion of the WUS bandwidth occupied by the WUS waveform is the bit value of the first bit in the pattern indicator bit set.

[0211] In some examples, the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration. In some examples, depending on the pattern, a portion of the WUS bandwidth and a portion of the WUS duration indicate at least the first bit value used for the first bit in the set of information bits.

[0212] In some examples, a portion of the WUS bandwidth occupied by the WUS waveform and a portion of the WUS duration are determined according to the first value of the first bit and the second value of the second bit in the pattern indicator bit set.

[0213] In some examples, the first part of the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration to indicate the first value of the first bit in the set of information bits according to the pattern, and the second part of the WUS waveform occupies a second portion of the WUS bandwidth and a second portion of the WUS duration to indicate the second value of the second bit in the set of information bits according to the pattern.

[0214] In some examples, the chirped signal comprises a monotonic frequency signal with a slope that increases or decreases linearly. In some examples, at least the pattern or slope, or both, associated with the WUS waveform indicates a first value of the first bit in the set of information bits.

[0215] In some examples, the slope indicates the first value of the first bit in the set of information bits, and the pattern indicates the second value of the second bit in the set of information bits. In some examples, the first value of the first bit is based on the frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof.

[0216] In some examples, the chirped signal includes a nonlinear chirped signal. In some examples, the WUS waveform is an OFDM waveform. In some examples, the chirped signal includes a Zadoff-Chu sequence. In some examples, the WUS waveform is an LP-WUS waveform.

[0217] In some cases, the information bit component 1625, waveform component 1630, WUS component 1635, monitoring component 1640, status component 1645, control message component 1650, sampling component 1655, transformation component 1660, and OFDM component 1665 may each be at least one processor (e.g., a transceiver processor, a radio processor, a transmitter processor, or a receiver processor) or at least part of such at least one processor. The at least one processor may be coupled to at least one memory and execute instructions stored in the at least one memory that enable the at least one processor to perform or facilitate the features of the information bit component 1625, waveform component 1630, WUS component 1635, monitoring component 1640, status component 1645, control message component 1650, sampling component 1655, transformation component 1660, and OFDM component 1665 discussed herein.

[0218] Figure 17 A diagram of a system 1700 including a device 1705 supporting a modulation scheme for chirped WUS, according to one or more aspects of this disclosure, is shown. Device 1705 may be an example of device 1405, device 1505, or UE 115 as described herein, or a component including such devices. Device 1705 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). Device 1705 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1720, an input / output (I / O) controller 1710, a transceiver 1715, an antenna 1725, at least one memory 1730, code 1735, and at least one processor 1740. These components may communicate electronically via one or more buses (e.g., bus 1745) or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground).

[0219] I / O controller 1710 manages the input and output signals of device 1705. I / O controller 1710 can also manage peripheral devices not integrated into device 1705. In some cases, I / O controller 1710 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1710 may utilize an operating system such as iOS. ® ANDROID ® MS-DOS® MS-WINDOWS ® OS / 2 ® UNIX ® LINUX ® Alternatively, the I / O controller 1710 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 1710 may be implemented as part of one or more processors, such as at least one processor 1740. In some cases, a user may interact with the device 1705 via the I / O controller 1710 or via hardware components controlled by the I / O controller 1710.

[0220] In some cases, device 1705 may include a single antenna 1725. However, in other cases, device 1705 may have more than one antenna 1725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 1715 may communicate bidirectionally via one or more antennas 1725, wired or wireless links, as described herein. For example, transceiver 1715 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 1715 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 1725 for transmission; and demodulating packets received from one or more antennas 1725. Transceiver 1715, or transceiver 1715 and one or more antennas 1725, may be an example of transmitter 1415, transmitter 1515, receiver 1410, receiver 1510, or any combination thereof or components thereof as described herein.

[0221] At least one memory 1730 may include random access memory (RAM) and read-only memory (ROM). At least one memory 1730 may store computer-readable, computer-executable code 1735, including instructions that, when executed by at least one processor 1740, cause device 1705 to perform the various functions described herein. Code 1735 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1735 may not be directly executable by at least one processor 1740, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, among other things, at least one memory 1730 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0222] At least one processor 1740 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, at least one processor 1740 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 1740. At least one processor 1740 may be configured to execute computer-readable instructions stored in memory (e.g., at least one memory 1730) to cause device 1705 to perform various functions (e.g., supporting various functions or tasks for a chirped WUS modulation scheme). For example, device 1705 or components of device 1705 may include at least one processor 1740 and at least one memory 1730 coupled to or coupled to at least one processor 1740, wherein at least one processor 1740 and at least one memory 1730 are configured to perform the various functions described herein. In some examples, at least one processor 1740 may include multiple processors, and at least one memory 1730 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein.

[0223] Communication manager 1720 may support wireless communication at a device (e.g., device 1705) according to examples disclosed herein. For example, communication manager 1720 is capable of, configured to, or operable to support components for modulating a set of information bits using OOK or FSK, or both. Communication manager 1720 is capable of, configured to, or operable to support components for generating a WUS waveform using a chirped signal and the modulated set of information bits. Communication manager 1720 is capable of, configured to, or operable to support components for transmitting a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0224] Additionally or alternatively, according to the examples disclosed herein, the communication manager 1720 may support wireless communication at a device (e.g., device 1705). For example, the communication manager 1720 may be capable of, configured to, or operable to support components for monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits. The communication manager 1720 may be capable of, configured to, or operable to support components for receiving a WUS waveform based on the monitoring via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the set of information bits. The communication manager 1720 may be capable of, configured to, or operable to support components for transitioning from a first state to a second state based on the received WUS waveform.

[0225] By including or configuring a communication manager 1720 according to an example as described herein, device 1705 can support technologies for improving communication reliability, reducing latency, reducing power consumption, utilizing communication resources more efficiently, and extending battery life.

[0226] In some examples, the communication manager 1720 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using a transceiver 1715, one or more antennas 1725, or any combination thereof, or otherwise cooperating with them. Although the communication manager 1720 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1720 may be supported by or executed by at least one processor 1740, at least one memory 1730, code 1735, or any combination thereof. For example, code 1735 may include instructions that may be executed by at least one processor 1740 to cause device 1705 to perform various aspects of the modulation scheme for chirped WUS as described herein, or at least one processor 1740 and at least one memory 1730 may be otherwise configured to perform or support such operations individually or jointly.

[0227] Figure 18A diagram of a system 1800 including a device 1805 supporting a modulation scheme for chirped WUS, according to one or more aspects of this disclosure, is shown. Device 1805 may be an example of device 1405, device 1505, or network entity 105 as described herein, or may include components thereof. Device 1805 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, and this communication may include communication via one or more wired interfaces, one or more wireless interfaces, or any combination thereof. Device 1805 may include components supporting output and enabling communication, such as a communication manager 1820, a transceiver 1810, an antenna 1815, at least one memory 1825, code 1830, and at least one processor 1835. These components may communicate electronically via one or more buses (e.g., bus 1840) or be otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground).

[0228] Transceiver 1810 may support bidirectional communication via a wired link, a wireless link, or both, as described herein. In some examples, transceiver 1810 may include a wired transceiver and be capable of bidirectional communication with another wired transceiver. Additionally or alternatively, in some examples, transceiver 1810 may include a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. In some examples, device 1805 may include one or more antennas 1815 that are capable of transmitting or receiving wireless transmissions (e.g., concurrently). Transceiver 1810 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., via one or more antennas 1815, via a wired transmitter); receiving the modulated signal (e.g., from one or more antennas 1815, from a wired receiver); and demodulating the signal. In some embodiments, transceiver 1810 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1815 configured to support various receive or acquire operations, or one or more interfaces coupled to one or more antennas 1815 configured to support various transmit or output operations, or combinations thereof. In some embodiments, transceiver 1810 may include one or more processor or memory components or be configured to couple to said one or more processor or memory components capable of operating to perform or support operations based on received or acquired information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some embodiments, transceiver 1810, or transceiver 1810 and one or more antennas 1815, or transceiver 1810 and one or more antennas 1815 and one or more processor or memory components (e.g., at least one processor 1835 or at least one memory 1825 or both), may be included in a chip or chip assembly mounted in device 1805. In some examples, the transceiver may be able to operate to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, and fronthaul communication link 168).

[0229] At least one memory 1825 may include RAM and ROM. At least one memory 1825 may store computer-readable, computer-executable code 1830, including instructions that, when executed by at least one processor 1835, cause device 1805 to perform the various functions described herein. Code 1830 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1830 may not be directly executable by at least one processor 1835, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, among other things, at least one memory 1825 may also include a BIOS that controls basic hardware or software operation, such as interaction with peripheral components or devices.

[0230] At least one processor 1835 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, ASICs, CPUs, FPGAs, microcontrollers, programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof). In some cases, at least one processor 1835 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 1835. At least one processor 1835 may be configured to execute computer-readable instructions stored in memory (e.g., at least one memory 1825) to cause device 1805 to perform various functions (e.g., supporting various functions or tasks for a chirped WUS modulation scheme). For example, device 1805 or components of device 1805 may include at least one processor 1835 and at least one memory 1825 coupled to at least one processor 1835, at least one processor 1835 and at least one memory 1825 configured to perform the various functions described herein. In some examples, at least one processor 1835 may include multiple processors, and at least one memory 1825 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein. At least one processor 1835 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that may (e.g., by executing code 1830) host functions for performing the functions of device 1805. At least one processor 1835 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 1805 (such as within at least one memory 1825). In some specific implementations, at least one processor 1835 may be a component of a processing system. A processing system can generally refer to a system or series of machines or components that receive input and process that input to produce a set of outputs (which may be passed to other systems or components, such as device 1805). For example, the processing system of device 1805 can refer to a system that includes various other components or sub-components of device 1805, such as at least one processor 1835, transceiver 1810, or communication manager 1820, or other components or combinations thereof of device 1805. The processing system of device 1805 may interface with other components of device 1805 and may process information received from other components (such as inputs or signals) or output information to other components. For example, the chip or modem of device 1805 may include the processing system and one or more interfaces for outputting information or for receiving information, or both.The one or more interfaces may be implemented as, or otherwise include, a first interface configured to output information and a second interface configured to receive information, or the same interface configured to both output and receive information, and other specific implementations. In some implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and the transmitter, enabling device 1805 to transmit information output from the chip or modem. Additionally or alternatively, in some implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and the receiver, enabling device 1805 to receive information or signal input, and such information may be transmitted to the processing system. Those skilled in the art will readily recognize that the first interface may also receive information or signal input, and the second interface may also output information or signal output.

[0231] In some examples, bus 1840 may support communication at the protocol layer of the protocol stack (e.g., within a protocol layer). In some examples, bus 1840 may support communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack), which may include communication performed within components of device 1805, or communication performed between different components of device 1805 that are co-addressable or may be located in different locations (e.g., where device 1805 may refer to a system in which one or more of communication manager 1820, transceiver 1810, at least one memory 1825, code 1830 and at least one processor 1835 may be located in one component of different components or partitioned between different components).

[0232] In some examples, the communication manager 1820 can manage (e.g., via one or more wired or wireless backhaul links) various aspects of communication with the core network 130. For example, the communication manager 1820 can manage the transfer of data communication with client devices, such as one or more UEs 115. In some examples, the communication manager 1820 can manage communication with other network entities 105 and may include a controller or scheduler for coordinating with other network entities 105 to control communication with UE 115. In some examples, the communication manager 1820 may support the X2 interface within LTE / LTE-A wireless communication network technology to provide communication between network entities 105.

[0233] Communication manager 1820 may support wireless communication at a device (e.g., device 1805) according to examples disclosed herein. For example, communication manager 1820 is capable of, configured to, or operable to support components for modulating a set of information bits using OOK or FSK, or both. Communication manager 1820 is capable of, configured to, or operable to support components for generating a WUS waveform using a chirped signal and the modulated set of information bits. Communication manager 1820 is capable of, configured to, or operable to support components for transmitting a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the modulated set of information bits.

[0234] Additionally or alternatively, according to the examples disclosed herein, the communication manager 1820 may support wireless communication at a device (e.g., device 1805). For example, the communication manager 1820 may be capable of, configured to, or operable to support components for monitoring the WUS bandwidth and WUS duration of a WUS waveform indicating a set of information bits. The communication manager 1820 may be capable of, configured to, or operable to support components for receiving a WUS waveform based on the monitoring via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on a chirped signal and an OOK or FSK or both of the set of information bits. The communication manager 1820 may be capable of, configured to, or operable to support components for transitioning from a first state to a second state based on the received WUS waveform.

[0235] By including or configuring a communication manager 1820 according to an example as described herein, device 1805 can support technologies for improving communication reliability, reducing latency, reducing power consumption, utilizing communication resources more efficiently, and extending battery life.

[0236] In some examples, the communication manager 1820 may be configured to use or otherwise coordinate with the transceiver 1810, one or more antennas 1815 (e.g., where applicable), or any combination thereof to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). Although the communication manager 1820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1820 may be supported by or performed by the transceiver 1810, at least one processor 1835, at least one memory 1825, code 1830, or any combination thereof. For example, code 1830 may include instructions that may be executed by at least one processor 1835 to cause the device 1805 to perform various aspects of the modulation scheme for chirped WUS as described herein, or at least one processor 1835 and at least one memory 1825 may be otherwise configured to perform or support such operations.

[0237] Figure 19 A flowchart illustrating a method 1900 for a chirped WUS modulation scheme according to various aspects of this disclosure is shown. Operation of method 1900 can be implemented by a UE or network entity or its components as described herein. For example, operation of method 1900 can be implemented by, as referenced... Figures 1 to 18 The described UE 115 or network entity performs the function. In some examples, the UE or network entity may execute a set of instructions to control the functional elements of the UE or network entity to perform the described function. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform aspects of the described function.

[0238] At 1905, the method may include modulating the set of information bits using OOK or FSK, or both. The operation of box 1905 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1905 may be derived from references... Figure 16 The described information bit component 1625 is used to perform this.

[0239] At 1910, the method may include generating a WUS waveform using a chirped signal and a set of modulated information bits. The operation of block 1910 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1910 may be derived from references... Figure 16 The waveform component 1630 described is used for execution.

[0240] At 1915, the method may include transmitting a WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform occupies at least a portion of the WUS bandwidth and at least a portion of the WUS duration according to a pattern based on the set of modulated information bits. The operation of block 1915 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1915 may be provided by reference to [reference]. Figure 16 The WUS component 1635 described is used to perform this.

[0241] Figure 20 A flowchart illustrating a method 2000 for a chirped WUS modulation scheme according to various aspects of this disclosure is shown. Operation of method 2000 can be implemented by a UE or network entity or its components as described herein. For example, operation of method 2000 can be implemented by, as referenced... Figures 1 to 18 The described UE 115 or network entity performs the function. In some examples, the UE or network entity may execute a set of instructions to control the functional elements of the UE or network entity to perform the described function. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform aspects of the described function.

[0242] At 2005, the method may include monitoring the WUS bandwidth and WUS duration of the WUS waveform of the indication information bit set. The operation of block 2005 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2005 may be provided by reference to [reference needed]. Figure 16 The monitoring component 1640 described is executed.

[0243] At 2010, the method may include receiving a WUS waveform based on monitoring at least a portion of the WUS bandwidth and a portion of the WUS duration, wherein the WUS waveform is based on an OOK or FSK, or both, of a chirp signal and a set of information bits. Operation of block 2010 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2010 may be provided by reference to [reference needed]. Figure 16 The WUS component 1635 described is used to perform this.

[0244] At 2015, the method may include transitioning from a first state to a second state based on a received WUS waveform. The operation of block 2015 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 2015 may be provided by reference to [reference needed]. Figure 16 The described state component 1645 is used to execute.

[0245] The following provides an overview of the various aspects of this disclosure:

[0246] Aspect 1: A method for wireless communication at a device, the method comprising: modulating a set of information bits using OOK or FSK or both; generating a WUS waveform using a chirped signal and the modulated set of information bits; and transmitting the WUS waveform via at least a portion of a WUS bandwidth and a portion of a WUS duration, wherein the WUS waveform occupies at least said portion of the WUS bandwidth and at least said portion of the WUS duration according to a pattern based at least in part on the modulated set of information bits.

[0247] Aspect 2: According to the method of aspect 1, the method further includes: sending or receiving a control message indicating a WUS scheme that identifies OOK or FSK or both and identifies the mode, wherein the modulation of the information bit set is at least partially based on the control message, and the WUS waveform is sent according to the mode.

[0248] Aspect 3: The method according to any one of Aspects 1 to 2, the method further comprising: sending or receiving a control message indicating a WUS scheme that identifies one or more parameters associated with the generation of the WUS waveform, wherein the generation of the WUS waveform is at least partially based on the control message.

[0249] Aspect 4: The method according to any one of Aspects 1 to 3, the method further comprising: sending or receiving a control message indicating a WUS scheme identifying the WUS bandwidth and the WUS duration, wherein the generation of the WUS waveform is at least partially based on the control message.

[0250] Aspect 5: The method according to any one of Aspects 1 to 4, wherein the WUS waveform occupies the WUS bandwidth and the portion of the WUS duration, and the portion of the WUS duration occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0251] Aspect 6: The method according to any one of Aspects 1 to 4, wherein the WUS waveform occupies the portion of the WUS bandwidth and the WUS duration, and the portion of the WUS bandwidth occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0252] Aspect 7: The method according to any one of Aspects 1 to 4, wherein the WUS waveform occupies the portion of the WUS bandwidth and the portion of the WUS duration, and the portion of the WUS bandwidth and the portion of the WUS duration indicate at least the first value of the first bit in the set of information bits according to the pattern.

[0253] Aspect 8: According to the method of aspect 7, wherein the portion of the WUS bandwidth occupied by the WUS waveform and the portion of the WUS duration indicate the first bit value of the first bit and the second bit value of the second bit in the set of information bits according to the mode.

[0254] Aspect 9: The method according to any one of Aspects 1 to 4, wherein the first portion of the WUS waveform occupies the portion of the WUS bandwidth and the portion of the WUS duration to indicate a first value of the first bit in the set of information bits according to the pattern, and the second portion of the WUS waveform occupies the second portion of the WUS bandwidth and the second portion of the WUS duration to indicate a second value of the second bit in the set of information bits according to the pattern.

[0255] Aspect 10: The method according to any one of Aspects 1 to 9, wherein the chirped signal comprises a monotonic frequency signal having a slope that increases or decreases linearly with time.

[0256] Aspect 11: According to the method of aspect 10, wherein at least the pattern or the slope or both indicate a first value of the first bit in the set of information bits.

[0257] Aspect 12: According to the method of aspect 11, wherein the slope indicates the first value of the first bit in the set of information bits, and the pattern indicates the second value of the second bit in the set of information bits.

[0258] Aspect 13: According to the method of aspect 11, wherein the first value of the first bit is based at least in part on the frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof.

[0259] Aspect 14: The method according to any one of aspects 1 to 9, wherein the chirped signal comprises a nonlinear chirped signal.

[0260] Aspect 15: The method according to any one of Aspects 1 to 14, the method further comprising: obtaining a time-domain sampling sequence by sampling the WUS waveform at least in part based on at least said portion of the WUS bandwidth and said portion of the WUS duration; applying a transform to the time-domain sampling sequence to generate a frequency-domain sampling sequence; and generating an OFDM waveform at least in part based on mapping the frequency-domain sampling sequence to a plurality of resource elements, wherein the WUS waveform is the OFDM waveform.

[0261] Aspect 16: The method according to aspect 15, wherein the chirped signal comprises a Zadoff Chu sequence.

[0262] Aspect 17: The method according to any one of Aspects 1 to 16, wherein the WUS waveform is an LP-WUS waveform.

[0263] Aspect 18: A method for wireless communication at a device, the method comprising: monitoring a WUS bandwidth and a WUS duration of a WUS waveform of an indication information bit set; receiving the WUS waveform via at least a portion of the WUS bandwidth and a portion of the WUS duration, based at least in part on the monitoring, wherein the WUS waveform is based at least in part on a chirp signal and an OOK or FSK or both of the information bit set; and transitioning from a first state to a second state based at least in part on the receipt of the WUS waveform.

[0264] Aspect 19: The method according to aspect 18, the method further comprising: sending or receiving a control message indicating a WUS scheme of OOK or FSK or both, wherein the WUS waveform is received at least in part based on the control message.

[0265] Aspect 20: The method according to any one of Aspects 18 to 19, the method further comprising: sending or receiving a control message indicating a WUS scheme that identifies one or more parameters associated with the generation of the WUS waveform, wherein the WUS waveform is received at least in part based on the control message.

[0266] Aspect 21: The method according to any one of Aspects 18 to 20, the method further comprising: sending or receiving a control message indicating a WUS scheme identifying the WUS bandwidth and the WUS duration, wherein monitoring of the WUS bandwidth and the WUS duration is based at least in part on the control message.

[0267] Aspect 22: The method according to any one of aspects 18 to 21, the method further comprising: decoding the WUS waveform to obtain the information bit set.

[0268] Aspect 23: The method according to aspect 22 further includes: performing a dechirping operation or a filtering operation or both, wherein decoding of the WUS waveform is based at least in part on the dechirping operation or the filtering operation or both.

[0269] Aspect 24: According to the method of aspect 22, the method further includes: identifying the correlation between the WUS waveform and a first type of chirp signal or a second type of chirp signal, wherein decoding of the WUS waveform is based at least in part on the correlation.

[0270] Aspect 25: The method according to any one of Aspects 18 to 24, wherein the WUS waveform occupies the WUS bandwidth and the portion of the WUS duration, and the portion of the WUS duration occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0271] Aspect 26: The method according to any one of Aspects 18 to 24, wherein the WUS waveform occupies the portion of the WUS bandwidth and the WUS duration, and the portion of the WUS bandwidth occupied by the WUS waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

[0272] Aspect 27: The method according to any one of Aspects 18 to 24, wherein the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration, and the portion of the WUS bandwidth and the portion of the WUS duration indicate at least the first value of the first bit in the set of information bits according to the pattern.

[0273] Aspect 28: According to the method of aspect 27, wherein the portion of the WUS bandwidth occupied by the WUS waveform and the portion of the WUS duration indicate the first bit value of the first bit and the second bit value of the second bit in the set of information bits according to the mode.

[0274] Aspect 29: The method according to any one of Aspects 18 to 24, wherein a first portion of the WUS waveform occupies a portion of the WUS bandwidth and a portion of the WUS duration to indicate a first value of the first bit in the set of information bits according to a pattern, and a second portion of the WUS waveform occupies a second portion of the WUS bandwidth and a second portion of the WUS duration to indicate a second value of the second bit in the set of information bits according to the pattern.

[0275] Aspect 30: The method according to any one of aspects 18 to 29, wherein the chirped signal comprises a monotonic frequency signal having a slope that increases or decreases linearly.

[0276] Aspect 31: According to the method of aspect 30, wherein at least the pattern or the slope or both associated with the WUS waveform indicates a first value of the first bit in the set of information bits.

[0277] Aspect 32: According to the method of aspect 31, wherein the slope indicates the first value of the first bit in the set of information bits, and the pattern indicates the second value of the second bit in the set of information bits.

[0278] Aspect 33: According to the method of aspect 31, wherein the first value of the first bit is based at least in part on the frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof.

[0279] Aspect 34: The method according to any one of aspects 18 to 29, wherein the chirped signal comprises a nonlinear chirped signal.

[0280] Aspect 35: The method according to any one of aspects 18 to 34, wherein the WUS waveform is an OFDM waveform.

[0281] Aspect 36: According to the method of aspect 35, the chirped signal includes a Zadoff Chu sequence.

[0282] Aspect 37: The method according to any one of Aspects 18 to 36, wherein the WUS waveform is an LP-WUS waveform.

[0283] Aspect 38: An apparatus for wireless communication at a device, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor being configured to perform a method according to any one of aspects 1 to 17.

[0284] Aspect 39: An apparatus for wireless communication at a device, the apparatus comprising at least one component for performing the method according to any one of aspects 1 to 17.

[0285] Aspect 40: A non-transitory computer-readable medium storing code for wireless communication at a device, said code including instructions executable by at least one processor to perform the method according to any one of aspects 1 to 17.

[0286] Aspect 41: An apparatus for wireless communication at a device, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor being configured to perform a method according to any one of aspects 18 to 37.

[0287] Aspect 42: An apparatus for wireless communication at a device, the apparatus comprising at least one component for performing the method according to any one of aspects 18 to 37.

[0288] Aspect 43: A non-transitory computer-readable medium storing code for wireless communication at a device, said code including instructions executable by at least one processor to perform the method according to any one of aspects 18 to 37.

[0289] It should be noted that the methods described herein describe possible specific implementations, and the operations and steps can be rearranged or otherwise modified, and other specific implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0290] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein are also applicable to networks outside of LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described are applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0291] The information and signals described herein can be represented using any of a variety of different techniques and skills. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0292] The various exemplary blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic element, discrete hardware component, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternative embodiments, the processor may be any processor, controller, microcontroller, or state machine. The 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 combined with a DSP core, or any other such configuration).

[0293] This document describes any function or operation that can be performed by a processor, which can be performed by multiple processors capable of performing the described function or operation individually or jointly. For example, the functions described herein can be performed by multiple processors, each processor being assigned tasks of at least one subset of the described functions, such that the multiple processors jointly perform all the described functions. Thus, the described functions can be performed by a single processor or by a group of processors working together (i.e., jointly) to perform the described functions, wherein any one processor performs at least one subset of the described functions.

[0294] The functions described herein can be implemented using hardware, software executed by at least one processor, firmware, or any combination thereof. When implemented using software executed by at least one processor, the functions can be stored as one or more instructions or code in a computer-readable medium, or transmitted using one or more instructions or code in a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by at least one processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions can also be physically located in different locations, including portions distributed such that the functions are implemented in different physical locations.

[0295] Computer-readable media include both non-transitory computer storage media and communication media, with the latter including any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible 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, compressed optical disc (CD) ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks can magnetically reproduce data, while optical discs can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0296] This document describes any function or operation that can be executed by a memory, which can be executed by multiple memories capable of performing the described function or operation individually or jointly. For example, the functions described herein can be executed by multiple memories, each memory being assigned tasks of at least one subset of the described functions, such that the multiple memories jointly execute all the described functions. Thus, the described functions can be executed by a single memory or by a group of memories working together (i.e., jointly) to execute the described functions, wherein any one memory executes at least one subset of the described functions.

[0297] As used herein (including in the claims), the word "or" used in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, 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). Additionally, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0298] The term "determine" encompasses a variety of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, lookup (such as by searching in a table, database, or other data structure), identification, and similar actions. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory), etc. Moreover, "determine" can include parsing, acquiring, selecting, choosing, creating, and other similar actions.

[0299] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numeral and a second numeral for differentiation between similar components. If only the first reference numeral is used in the specification, the description can be applied to any of the similar components having the same first reference numeral, regardless of the second or other subsequent reference numerals.

[0300] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all achievable examples or those within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," not "preferred" or "advantageous over other examples." The detailed description includes specific details used to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0301] The description provided herein is intended to enable those skilled in the art to implement or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a device, the apparatus comprising: At least one memory; and At least one processor, coupled to the at least one memory, is configured to: Use on / off keying or frequency shift keying or both to modulate the set of information bits; The wake-up signal waveform is generated using a chirp signal and a set of modulated information bits; and The wake-up signal waveform is transmitted via at least a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration, wherein the wake-up signal waveform occupies at least said portion of the wake-up signal bandwidth and at least said portion of the wake-up signal duration according to a pattern based at least in part on a set of modulated information bits.

2. The apparatus of claim 1, wherein the at least one processor is configured to: Sending or receiving a control message indicating a wake-up signal scheme that identifies on / off keying or frequency shift keying or both and identifies the mode, wherein the set of information bits is modulated at least in part based on the control message, and the wake-up signal waveform is sent according to the mode.

3. The apparatus of claim 1, wherein the at least one processor is configured to: Send or receive a control message indicating a wake-up signal scheme that identifies one or more parameters associated with the generation of the wake-up signal waveform, wherein the generation of the wake-up signal waveform is at least partially based on the control message.

4. The apparatus of claim 1, wherein the at least one processor is configured to: Sending or receiving a control message indicating a wake-up signal scheme that identifies the wake-up signal bandwidth and the wake-up signal duration, wherein the wake-up signal waveform is generated at least in part based on the control message.

5. The apparatus according to claim 1, wherein: The wake-up signal waveform occupies a portion of the wake-up signal bandwidth and the wake-up signal duration, and The portion of the wake-up signal duration occupied by the wake-up signal waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

6. The apparatus according to claim 1, wherein: The wake-up signal waveform occupies a portion of the wake-up signal bandwidth and the wake-up signal duration, and The portion of the wake-up signal bandwidth occupied by the wake-up signal waveform indicates the bit value of the first bit in the information bit set according to the pattern.

7. The apparatus according to claim 1, wherein: The wake-up signal waveform occupies a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration, and The portion of the wake-up signal bandwidth and the portion of the wake-up signal duration indicate, according to the pattern, at least the first bit value of the first bit in the set of information bits.

8. The apparatus of claim 7, wherein the portion of the wake-up signal bandwidth occupied by the wake-up signal waveform and the portion of the wake-up signal duration indicate, according to the pattern, the first bit value of the first bit and the second bit value of the second bit in the information bit set.

9. The apparatus of claim 1, wherein a first portion of the wake-up signal waveform occupies a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration to indicate a first value of a first bit in the information bit set according to the pattern, and a second portion of the wake-up signal waveform occupies a second portion of the wake-up signal bandwidth and a second portion of the wake-up signal duration to indicate a second value of a second bit in the information bit set according to the pattern.

10. The apparatus of claim 1, wherein the chirped signal comprises a monotonic frequency signal having a slope that increases or decreases linearly with time.

11. The apparatus of claim 10, wherein at least the mode or the slope or both indicate a first value of the first bit in the set of information bits.

12. The apparatus of claim 11, wherein the slope indicates the first value of the first bit in the set of information bits, and the pattern indicates the second value of the second bit in the set of information bits.

13. The apparatus of claim 11, wherein the first value of the first bit is based at least in part on a frequency offset associated with the chirped signal, the value of the slope, or whether the slope increases or decreases linearly over time, or any combination thereof.

14. The apparatus of claim 1, wherein the chirped signal comprises a nonlinear chirped signal.

15. The apparatus of claim 1, wherein the at least one processor is configured to: A time-domain sampling sequence is obtained by sampling the wake-up signal waveform, at least in part, within at least a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration. A transformation is applied to the time-domain sampled sequence to generate a frequency-domain sampled sequence; and The orthogonal frequency division multiplexing waveform is generated at least in part based on mapping the frequency domain sampling sequence to multiple resource elements, wherein the wake-up signal waveform is the orthogonal frequency division multiplexing waveform.

16. The apparatus of claim 15, wherein the chirped signal comprises a Zadoff-Chu sequence.

17. The apparatus of claim 1, wherein the wake-up signal waveform is a low-power wake-up signal waveform.

18. An apparatus for wireless communication at a device, the apparatus comprising: At least one memory; and At least one processor, coupled to the at least one memory, is configured to: Monitor the wake-up signal waveform of the indicator information bit set, including the wake-up signal bandwidth and wake-up signal duration; The wake-up signal waveform is received, at least in part, based on the monitoring, via at least a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration, wherein the wake-up signal waveform is at least in part based on a chirp signal and on / off keying or frequency shift keying, or both, of the information bit set; and At least in part, it is based on the received wake-up signal waveform transitioning from a first state to a second state.

19. The apparatus of claim 18, wherein the at least one processor is configured to: Sending or receiving a control message indicating a wake-up signal scheme of on / off keying or frequency shift keying or both, wherein the wake-up signal waveform is received at least in part based on the control message.

20. The apparatus of claim 18, wherein the at least one processor is configured to: Sending or receiving a control message indicating a wake-up signal scheme that identifies the wake-up signal bandwidth and the wake-up signal duration, wherein monitoring the wake-up signal bandwidth and the wake-up signal duration is at least partially based on the control message.

21. The apparatus of claim 18, wherein the at least one processor is configured to: The wake-up signal waveform is decoded to obtain the set of information bits.

22. The apparatus of claim 21, wherein the at least one processor is configured to: Perform a dechirping operation or a filtering operation or both, wherein decoding of the wake-up signal waveform is at least in part based on the dechirping operation or the filtering operation or both.

23. The apparatus of claim 21, wherein the at least one processor is configured to: The correlation between the wake-up signal waveform and a first type of chirp signal or a second type of chirp signal is identified, wherein the decoding of the wake-up signal waveform is based at least in part on the correlation.

24. The apparatus of claim 18, wherein: The wake-up signal waveform occupies a portion of the wake-up signal bandwidth and the wake-up signal duration, and The portion of the wake-up signal duration occupied by the wake-up signal waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

25. The apparatus according to claim 18, wherein: The wake-up signal waveform occupies a portion of the wake-up signal bandwidth and the wake-up signal duration, and The portion of the wake-up signal bandwidth occupied by the wake-up signal waveform indicates the bit value of the first bit in the set of information bits according to the pattern.

26. The apparatus according to claim 18, wherein: The wake-up signal waveform occupies a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration, and The portion of the wake-up signal bandwidth and the portion of the wake-up signal duration indicate, according to the pattern, at least the first bit value of the first bit in the set of information bits.

27. The apparatus of claim 26, wherein the portion of the wake-up signal bandwidth occupied by the wake-up signal waveform and the portion of the wake-up signal duration indicate, according to the pattern, the first bit value of the first bit and the second bit value of the second bit in the set of information bits.

28. The apparatus of claim 18, wherein a first portion of the wake-up signal waveform occupies a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration to indicate a first value of a first bit in the set of information bits according to a pattern, and a second portion of the wake-up signal waveform occupies a second portion of the wake-up signal bandwidth and a second portion of the wake-up signal duration to indicate a second value of a second bit in the set of information bits according to the pattern.

29. A method for wireless communication at a device, the method comprising: Use on / off keying or frequency shift keying or both to modulate the set of information bits; The wake-up signal waveform is generated using a chirp signal and a set of modulated information bits; as well as The wake-up signal waveform is transmitted via at least a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration, wherein the wake-up signal waveform occupies at least said portion of the wake-up signal bandwidth and at least said portion of the wake-up signal duration according to a pattern based at least in part on a set of modulated information bits.

30. A method for wireless communication at a device, the method comprising: Monitor the wake-up signal waveform of the indicator information bit set, including the wake-up signal bandwidth and wake-up signal duration; The wake-up signal waveform is received, at least in part, based on the monitoring, via at least a portion of the wake-up signal bandwidth and a portion of the wake-up signal duration, wherein the wake-up signal waveform is at least in part based on a chirp signal and on / off keying or frequency shift keying, or both, of the information bit set; and At least in part, it is based on the received wake-up signal waveform transitioning from a first state to a second state.

Images