Relay wake-up signal for access link using sidelink

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a first user equipment (UE) may receive, from a network node using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node. The first UE may transmit a second indication of the access link wake-up signal to the second UE based at least in part on using a sidelink between the first UE and the second UE. Numerous other aspects are described.

Description

[0001] Cross - Reference to Related Applications

[0002] This patent application claims priority to U.S. Non - Provisional Patent Application No. 18 / 057,725, entitled "RELAYED WAKE - UP SIGNAL FOR AN ACCESS LINK USING A SIDELINK", filed on November 21, 2022, which is hereby incorporated by reference in its entirety. Field of the Disclosure

[0003] Aspects of the present disclosure generally relate to wireless communication and relate to techniques and apparatus for relayed wake - up signals for access links using sidelinks. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ multiple access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access techniques include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single - Carrier Frequency Division Multiple Access (SC - FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD - SCDMA) systems, and Long Term Evolution (LTE). LTE / Advanced LTE is an enhanced set of the Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communication for wireless communication devices such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communication and uplink communication. "Downlink" (or "DL") refers to the communication link from the network node to the UE, and "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device - to - device communication, such as via a local link (e.g., sidelink (SL), Wireless Local Area Network (WLAN) link, and / or Wireless Personal Area Network (WPAN) link, etc.).

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at the urban, national, regional, and / or global levels. New Radio (NR) (which may be referred to as 5G) is an enhanced set of the LTE mobile standard promulgated by 3GPP. NR is designed to improve spectral efficiency, reduce costs, improve services, utilize new spectrums, and better integrate with other open standards by using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM) on the downlink, CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)) on the uplink, and supporting beamforming, Multiple Input Multiple Output (MIMO) antenna technology, and carrier aggregation, so as to better support mobile broadband Internet access. With the continuous increase in the demand for mobile broadband access, further improvements to LTE, NR, and other radio access technologies are still useful. Summary of the Invention

[0007] Some aspects described herein relate to a method of wireless communication performed by a device of a first User Equipment (UE). The method may include: receiving, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node from a network node. The method may include: transmitting, at least in part based on using a sidelink between the first UE and the second UE, a second indication of the access link wake-up signal to the second UE.

[0008] Some aspects described herein relate to a method of wireless communication performed by a device of a network node. The method may include: transmitting, using a second access link associated with a second UE, an instruction for transitioning the second access link to a deep sleep mode. The method may include: transmitting, using a first access link, an indication of an access link wake-up signal associated with the second access link to the first UE associated with a sidelink between the first UE and the second UE.

[0009] Some aspects described herein relate to a method of wireless communication performed by a device of a second UE. The method may include: receiving, using an access link between the second UE and a network node, an instruction for transitioning the access link to a deep sleep mode from the network node. The method may include: receiving, using a sidelink between the first UE and the second UE, an indication of an access link wake-up signal associated with the access link from the first UE.

[0010] Some aspects described herein relate to an apparatus for wireless communication at a first UE. The apparatus may include: a memory; and one or more processors coupled to the memory. The memory may include instructions executable by the one or more processors to cause the apparatus to: receive, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node from a network node. The memory may include instructions executable by the one or more processors to cause the apparatus to: send, at least in part based on using a sidelink between the first UE and the second UE, a second indication of the access link wake-up signal to the second UE.

[0011] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include: a memory; and one or more processors coupled to the memory. The memory may include instructions executable by the one or more processors to cause the apparatus to: send, using a second access link associated with a second UE, an instruction for transitioning the second access link to a deep sleep mode. The memory may include instructions executable by the one or more processors to cause the apparatus to: send, using a first access link, an indication of an access link wake-up signal associated with the second access link to the first UE associated with a sidelink between the first UE and the second UE.

[0012] Some aspects described herein relate to an apparatus for wireless communication at a second UE. The apparatus may include: a memory; and one or more processors coupled to the memory. The memory may include instructions executable by the one or more processors to cause the apparatus to: receive, using an access link between the second UE and a network node, an instruction for transitioning the access link to a deep sleep mode from the network node. The memory may include instructions executable by the one or more processors to cause the apparatus to: receive, using a sidelink between the first UE and the second UE, an indication of an access link wake-up signal associated with the access link from the first UE.

[0013] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a device of a first UE. The set of instructions, when executed by one or more processors of the device, causes the device to: receive, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node. The set of instructions, when executed by the one or more processors, causes the device to: send, at least in part based on using a sidelink between the first UE and the second UE, a second indication of the access link wake-up signal to the second UE.

[0014] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a device of a network node. The set of instructions, when executed by one or more processors of the device, causes the device to: send, using a second access link associated with a second UE, an instruction to transition the second access link to a deep sleep mode. The set of instructions, when executed by the one or more processors, causes the device to: send, using a first access link, an indication of an access link wake-up signal associated with the second access link to a first UE associated with a sidelink between the first UE and the second UE.

[0015] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a device of a second UE. The set of instructions, when executed by one or more processors of the device, causes the device to: receive, using an access link between the second UE and a network node, an instruction to transition the access link to a deep sleep mode from the network node. The set of instructions, when executed by the one or more processors, causes the device to: receive, using a sidelink between a first UE and the second UE, an indication of an access link wake-up signal associated with the access link from the first UE.

[0016] Some aspects described herein relate to a device for wireless communication. The device may include means for receiving, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a UE and the network node from a network node. The device may include means for sending, at least in part based on using a sidelink between the device and the UE, a second indication of the access link wake-up signal to the UE.

[0017] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending, using a second access link associated with a second UE, an instruction for transitioning the second access link to a deep sleep mode. The apparatus may include means for sending, using a first access link, an indication of an access link wake-up signal associated with the second access link to a first UE associated with a sidelink between the first UE and the second UE.

[0018] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving, using an access link between the apparatus and a network node, an instruction for transitioning the access link to a deep sleep mode from the network node. The apparatus may include means for receiving, using a sidelink between a UE and the apparatus, an indication of an access link wake-up signal associated with the access link from the UE.

[0019] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices, and / or processing systems as fully described herein with reference to the figures and the specification and illustrated in the figures and the specification.

[0020] The features and technical advantages of examples in accordance with the present disclosure have been outlined above rather broadly in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both as to their organization and operation methods, as well as the associated advantages, will be better understood by considering the following description in conjunction with the accompanying figures. Each of the figures provided is for the purpose of illustration and description and is not a definition of the limitations of the claims.

[0021] While aspects are described herein by way of illustration of some examples, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects can be implemented via an integrated chip implementation or other non-module component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices, and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices incorporating the described aspects and features can include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals can include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). The aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and / or end-user devices of various sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To gain a more detailed understanding of the above features of the present disclosure, a more specific description of the above briefly summarized inventive concept can be obtained by referring to the aspects, some of which are illustrated in the drawings. However, it should be noted that the drawings only illustrate certain typical aspects of the present disclosure and are therefore not considered to limit its scope, as the specification may admit other equally valid aspects. The same reference numerals in different drawings can identify the same or similar elements.

[0023] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0024] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0025] Figure 3 is a diagram illustrating an example of sidelink communication according to the present disclosure.

[0026] Figure 4 is a diagram illustrating an example of sidelink communication and access link communication according to the present disclosure.

[0027] Figure 5 is a diagram illustrating an example of a discontinuous reception (DRX) configuration according to the present disclosure.

[0028] Figure 6Is a diagram illustrating an example of a wireless communication process between a network node, a first UE, and one or more other UEs according to the present disclosure.

[0029] Figure 7 Is a diagram illustrating an example of a wireless communication process between a network node, a first UE, and one or more other UEs according to the present disclosure.

[0030] Figure 8 Is a diagram illustrating an example process, such as that performed by a first UE, according to the present disclosure.

[0031] Figure 9 Is a diagram illustrating an example process, such as that performed by a network node, according to the present disclosure.

[0032] Figure 10 Is a diagram illustrating an example process, such as that performed by a second UE, according to the present disclosure.

[0033] Figure 11 Is a diagram of an example apparatus for wireless communication according to the present disclosure.

[0034] Figure 12 Is a diagram of an example apparatus for wireless communication according to the present disclosure. Detailed implementation

[0035] The various aspects of the present disclosure are more fully described below with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Those skilled in the art should understand that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the present disclosure. For example, any number of the aspects set forth herein may be used to implement an apparatus or practice a method. In addition, the scope of the present disclosure is intended to cover such apparatuses or methods implemented using other structures, functionality, or a combination of structures and functionality in addition to or different from the aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of the claims.

[0036] Aspects of a telecommunications system will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various boxes, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the particular application and the design constraints imposed on the overall system.

[0037] Although terms that are generally associated with 5G or New Radio (NR) radio access technology (RAT) may be used herein to describe aspects, aspects of the present disclosure can be applied to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RATs (e.g., 6G).

[0038] Figure 1 FIG. is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 can be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or can include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 can include one or more network nodes 110 (shown as network nodes 110a, network nodes 110b, network nodes 110c, and network nodes 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UEs 120a, UEs 120b, UEs 120c, UEs 120d, and UEs 120e), and / or other entities. The network nodes 110 are network nodes that communicate with the UEs 120. As shown, the network nodes 110 can include one or more network nodes. For example, the network nodes 110 can be an aggregated network node, which means that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network nodes 110 can be a disaggregated network node (sometimes referred to as a disaggregated base station), which means that the network nodes 110 are configured to utilize a protocol stack that is physically or logically distributed between two or more nodes, such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs).

[0039] In some examples, network node 110 is or includes a network node that communicates with UE 120 via a radio access link, such as a RU. In some examples, network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link, such as a CU. In some examples, network node 110 (such as an aggregated network node 110 or a disaggregated network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. Network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of the network, a core network node, a network element, network equipment, a RAN node, or a combination thereof. In some examples, network node 110 may be interconnected with one or more other network nodes 110 in wireless network 100 or to a core network via any suitable transport network using various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks).

[0040] In some examples, network node 110 may provide communication coverage for a specific geographical area. In the 3rd Generation Partnership Project (3GPP), depending on the context in which the term is used, the term "cell" may refer to the coverage area of network node 110 and / or the network node subsystem serving that coverage area. Network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographical area (e.g., with a radius of several kilometers) and may allow unrestricted access by UE 120 with a service subscription. A pico cell may cover a relatively small geographical area and may allow unrestricted access by UE 120 with a service subscription. A femto cell may cover a relatively small geographical area (e.g., a home) and may allow restricted access by UE 120 associated with the femto cell (e.g., UE 120 in a Closed Subscriber Group (CSG)). The network node 110 for a macro cell may be referred to as a macro network node. The network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. In Figure 1In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographical area of a cell may move according to the location of a moving network node 110 (e.g., a mobile network node).

[0041] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, the "base station" or "network node" may refer to a CU, a DU, an RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a single device configured to perform one or more functions, such as those described herein in connection with network node 110. In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which may be located in the same geographical location or different geographical locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of a function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one base station function among base station functions, rather than another base station function. In this way, a single device may include more than one base station.

[0042] Wireless network 100 may include one or more relay stations. A relay station is a network node that can receive a transmission of data from an upstream node (e.g., network node 110 or UE 120) and transmit the data to a downstream node (e.g., UE 120 or network node 110). A relay station may be a UE 120 capable of relaying transmissions for other UEs 120. In Figure 1 the example shown, network node 110d (e.g., a relay network node) may communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. A network node that relays communication may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0043] The wireless network 100 can be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 can have different transmission power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node can have a high transmission power level (e.g., 5 watts to 40 watts), while pico network nodes, femto network nodes, and relay network nodes can have lower transmission power levels (e.g., 0.1 watt to 2 watts).

[0044] The network controller 130 can be coupled to or communicate with a set of network nodes 110 and can provide coordination and control for these network nodes 110. The network controller 130 can communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 can also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 can be a CU or a core network device, or can include a CU or a core network device.

[0045] UEs 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. The UEs 120 can include, for example, access terminals, terminals, mobile stations, and / or subscriber units. A UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, a superbook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, UE functionality of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0046] Some UEs 120 may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. The MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which may communicate with network nodes, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as narrowband IoT (NB-IoT) devices. Some UEs 120 may be considered customer premise equipment. The UE 120 may be included inside a housing that houses components of the UE 120, such as processor components and / or memory components. In some examples, the processor components and the memory components may be coupled together. For example, the processor components (e.g., one or more processors) and the memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0047] In general, any number of radio networks 100 may be deployed in a given geographical area. Each radio network 100 may support a specific RAT and may operate on one or more frequencies. The RAT may be referred to as a radio technology, an air interface, etc. The frequency may be referred to as a carrier, a frequency channel, etc. Each frequency in a given geographical area may support a single RAT to avoid interference between radio networks of different RATs. In some cases, an NR or 5G RAT network may be deployed.

[0048] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., communicate with each other without using the network node 110 as an intermediate device). For example, the UE 120 may use peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks to communicate. In such examples, the UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the network node 110.

[0049] Devices of the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, frequency bands, channels, etc. according to frequency or wavelength. For example, devices of the wireless network 100 can communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been identified as Frequency Range Designation FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). It should be understood that although a part of FR1 is greater than 6 GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band. Regarding FR2, a similar naming issue sometimes occurs, which is usually (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) identified by the International Telecommunication Union (ITU) as the "millimeter wave" band.

[0050] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified operating frequency bands for these mid-band frequencies as Frequency Range Designation FR3 (7.125 GHz - 24.25 GHz). Bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating frequency bands have been identified as Frequency Range Designation FR4a or FR4-1 (52.6 GHz - 71 GHz), FR4 (52.6 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0051] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" etc. is used in this article, this term can generally represent frequencies that can be below 6 GHz, can be within FR1, or can include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" etc. is used in this article, this term can generally represent frequencies that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or can be within the EHF band. It is conceivable that the frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the technologies described in this article apply to those modified frequency ranges.

[0052] In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the UE may be a first UE, and the communication manager 140 may receive, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node; and transmit, at least in part based on using a sidelink between the first UE and the second UE, a second indication of the access link wake-up signal to the second UE. For example, the communication manager 140 may receive the first indication and transmit the second indication at least in part based on the UE acting as a relay UE (e.g., the first UE). Alternatively or additionally, in some aspects, the UE may be a second UE, and the communication manager 140 may receive, using an access link between the second UE and the network node, an instruction to transition the access link to a deep sleep mode; and receive, using a sidelink between a first UE and the second UE, an indication of an access link wake-up signal associated with the access link from the first UE. By way of illustration, the communication manager may receive the instruction from the network node and / or receive the indication from the first UE at least in part based on the UE acting as the second UE. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0053] In some aspects, a network node (e.g., network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may transmit, using a second access link associated with a second UE, an instruction to transition the second access link to a deep sleep mode; and transmit, using a first access link, an indication of an access link wake-up signal associated with the second access link to the first UE associated with a sidelink between the first UE and the second UE. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0054] As indicated above, Figure 1 is provided as an example. Other examples may be different from the examples described with respect to Figure 1 described.

[0055] Figure 2FIG. is an illustration of example 200 depicting communication between network node 110 and UE 120 in wireless network 100 in accordance with the present disclosure. Network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T≥1). UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R≥1). Network node 110 of example 200 includes one or more radio frequency components, such as antenna 234 and modem 254. In some examples, network node 110 may include an interface, communication component, or another component that facilitates communication with UE 120 or another network node. Some network nodes 110 may not include radio frequency components that facilitate direct communication with UE 120, such as one or more CUs or one or more DUs.

[0056] At network node 110, transmit processor 220 may receive data destined for UE 120 (or a set of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCSs) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols to UE 120. Transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signal (CRS) or demodulation reference signal (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a through 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 may process the corresponding output symbol stream (e.g., for OFDM) using the corresponding modulator component to obtain an output sample stream. Each modem 232 may also process the output sample stream (e.g., convert to analog, amplify, filter, and / or up-convert) using the corresponding modulator component to obtain a downlink signal. Modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0057] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of the received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may condition (e.g., filter, amplify, down-convert, and / or digitize) the received signal using the corresponding demodulator component to obtain input samples. Each modem 254 may further process the input samples (e.g., for OFDM) using the demodulator component to obtain the received symbols. The MIMO detector 256 may obtain the received symbols from the modems 254, may perform MIMO detection on the received symbols when applicable, and may provide the detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide the decoded data for the UE 120 to the data sink 260, and may provide the decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP) parameters, received signal strength indicator (RSSI) parameters, reference signal received quality (RSRQ) parameters, and / or CQI parameters, etc. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0058] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0059] One or more antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc., or may be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. The antenna panel, antenna group, set of antenna elements, and / or antenna array may include one or more antenna elements (in a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and / or one or more antenna elements coupled to one or more transmit and / or receive components (such as Figure 2 one or more components) of.

[0060] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 when applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and / or the TX MIMO processor 266. The transceiver may be used by a processor (e.g., the controller / processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figures 5 to 12 ).

[0061] At the network node 110, the uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., the demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 when applicable, and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication and / or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of the antenna 234, the modem 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and / or the TX MIMO processor 230. The transceiver may be used by a processor (e.g., the controller / processor 240) and the memory 242 to perform aspects of any of the methods described herein (e.g., with reference to Figures 5 to 12 ).

[0062] The controller / processor 240 of network node 110, the controller / processor 280 of UE 120, and / or Figure 2 any other component of may perform one or more techniques associated with a relayed wake-up signal for an access link using a sidelink, as described in more detail elsewhere herein. For example, the controller / processor 240 of network node 110, the controller / processor 280 of UE 120, and / or Figure 2 any other component of may execute or direct, for example Figure 8 procedure 800 of, Figure 9 procedure 900 of, Figure 10 procedure 1000 of, and / or the operations of other procedures as described herein. Memories 242 and 282 may store data and program code for network node 110 and UE 120, respectively. In some examples, memories 242 and / or 282 may include non-transitory computer-readable media storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when the one or more instructions are executed by one or more processors of network node 110 and / or UE 120 (e.g., executed directly, or after compilation, conversion, and / or interpretation), the one or more processors, UE 120, and / or network node 110 may be caused to execute or direct, for example Figure 8 procedure 800 of, Figure 9 procedure 900 of, Figure 10 procedure 1000 of, and / or the operations of other procedures as described herein. In some examples, executing the instructions may include running the instructions, converting the instructions, compiling the instructions, and / or interpreting the instructions, etc.

[0063] In some aspects, a UE (e.g., UE 120) includes: means for receiving, from a network node using a first access link, a first indication of an access link wake-up signal associated with a second access link between the second UE and the network node; and / or means for sending, to the second UE, a second indication of the access link wake-up signal based at least in part on using a sidelink between the UE and the second UE. The means for a UE to perform the operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0064] In some aspects, a UE (e.g., UE 120) includes: components for receiving, using an access link between the UE and a network node, an instruction for transitioning the access link to a deep sleep mode; and / or components for receiving, using a sidelink between a first UE and the UE, an indication of an access link wake-up signal associated with the access link. The components for the UE to perform the operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0065] In some aspects, the network node includes: components for transmitting, using a second access link associated with a second UE, an instruction for transitioning the second access link to a deep sleep mode; and / or components for transmitting, using a first access link, to the first UE associated with a sidelink between the first UE and the second UE, an indication of an access link wake-up signal associated with the second access link. The components for the network node to perform the operations described herein may include, for example, one or more of the following: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0066] Although Figure 2 the blocks in are illustrated as different components, the functions described above with respect to these blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by controller / processor 280 or under the control of the controller / processor.

[0067] As indicated above, Figure 2 is provided as an example. Other examples may be different from the examples described with respect to Figure 2 which.

[0068] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in various ways. In a 5G NR system or network, network nodes, network entities, mobility elements of the network, RAN nodes, core network nodes, network elements, base stations, or network equipment can be implemented in a converged or decomposed architecture. For example, a base station (such as Node B (NB), evolved NB (eNB), NR BS, 5G NB, access point (AP), TRP, or cell, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as a converged base station (also referred to as a stand-alone base station or a monolithic base station) or a decomposed base station. A "network entity" or "network node" can refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0069] A converged base station (e.g., a converged network node) can be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) can be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU can be implemented within a network node, and one or more DUs can be co-located with the CU, or alternatively, can be geographically or virtually spread across one or more other network nodes. A DU can be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), etc.

[0070] Base station type operations or network designs can consider the aggregation characteristics of base station functionality. For example, a decomposed base station can be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also referred to as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station can include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which can achieve flexibility in network design. The individual units of a decomposed base station can be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0071] Figure 3 is a diagram illustrating Example 300 of sidelink communication according to the present disclosure.

[0072] As Figure 3As shown, the first UE 305-1 may communicate with a second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. The UEs 305-1 and 305-2 may communicate using one or more sidelink channels 310 for peer-to-peer communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, and / or V2P communication), and / or mesh networks. In some aspects, the UEs 305 (e.g., UE 305-1 and / or UE 305-2) may correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more sidelink channels 310 may use the PC5 interface and / or may operate in a high frequency band (e.g., 5.9 GHz band). Additionally or alternatively, the UEs 305 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, or symbols).

[0073] As Figure 3 As further shown, one or more sidelink channels 310 may include a Physical Sidelink Control Channel (PSCCH) 315, a Physical Sidelink Shared Channel (PSSCH) 320, and / or a Physical Sidelink Feedback Channel (PSFCH) 325. The PSCCH 315 may be used to convey control information, similar to the Physical Downlink Control Channel (PDCCH) and / or the Physical Uplink Control Channel (PUCCH) for cellular communication with a network node 110 via an access link or access channel. The PSSCH 320 may be used to convey data, similar to the Physical Downlink Shared Channel (PDSCH) and / or the Physical Uplink Shared Channel (PUSCH) for cellular communication with a network node 110 via an access link or access channel. For example, the PSCCH 315 may carry Sidelink Control Information (SCI) 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, and / or spatial resources), where a Transport Block (TB) 335 may be carried on the PSSCH 320. The TB 335 may include data. The PSFCH 325 may be used to convey sidelink feedback 340, such as Hybrid Automatic Repeat Request (HARQ) feedback (e.g., acknowledgement or negative acknowledgement (ACK / NACK) information), Transmit Power Control (TPC), and / or a Scheduling Request (SR).

[0074] Although shown on the PSCCH 315, in some aspects, the SCI 330 may include multiple communications at different levels, such as a first-level SCI (SCI-1) and a second-level SCI (SCI-2). The SCI-1 may be transmitted on the PSCCH 315. The SCI-2 may be transmitted on the PSSCH 320. The SCI-1 may include, for example, an indication of one or more resources (e.g., time resources, frequency resources, and / or spatial resources) on the PSSCH 320, information for decoding sidelink communications on the PSSCH, a quality of service (QoS) priority value, a resource reservation period, a PSSCH DMRS mode, an SCI format for the SCI-2, a β offset for the SCI-2, the number of PSSCH DMRS ports, and / or an MCS. The SCI-2 may include information associated with data transmission on the PSSCH 320, such as a HARQ process ID, a new data indicator (NDI), a source identifier, a destination identifier, and / or a channel state information (CSI) report trigger.

[0075] In some aspects, one or more sidelink channels 310 may use a resource pool. For example, a scheduling assignment (e.g., included in the SCI 330) may be transmitted in a subchannel using a specific resource block (RB) across time. In some aspects, data transmission (e.g., on the PSSCH 320) associated with the scheduling assignment may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, the scheduling assignment and the associated data transmission are not transmitted on adjacent RBs.

[0076] In some aspects, the UE 305 may operate using a sidelink resource allocation mode (e.g., mode 1), where resource selection and / or scheduling is performed by a network node 110 (e.g., a base station, CU, or DU). For example, the UE 305 may receive (e.g., directly or via one or more network nodes) from the network node 110 a grant for sidelink channel access and / or scheduling (e.g., in downlink control information (DCI) or in a radio resource control (RRC) message, such as a configured grant). In some aspects, the UE 305 may operate using a resource allocation mode (e.g., mode 2), where resource selection and / or scheduling is performed by the UE 305 (e.g., instead of the network node 110). In some aspects, the UE 305 may perform resource selection and / or scheduling by sensing the channel availability for transmission. For example, the UE 305 may measure the RSSI parameter associated with various sidelink channels (e.g., the sidelink - RSSI (S - RSSI) parameter), may measure the RSRP parameter associated with various sidelink channels (e.g., the PSSCH - RSRP parameter), and / or may measure the RSRQ parameter associated with various sidelink channels (e.g., the PSSCH - RSRQ parameter), and may select a channel for transmitting sidelink communication based at least in part on the measurements.

[0077] Additionally or alternatively, the UE 305 may use the SCI 330 received in the PSCCH 315 to perform resource selection and / or scheduling, and the SCI may indicate the occupied resources and / or channel parameters. Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling by determining the channel busy rate (CBR) associated with each sidelink channel, and the channel busy rate (CBR) may be used for rate control (e.g., by indicating the maximum number of resource blocks that the UE 305 may use for a particular set of subframes).

[0078] In the resource allocation mode (e.g., mode 2) where the UE 305 performs resource selection and / or scheduling, the UE 305 may generate a sidelink grant and may send the grant in the SCI 330. The sidelink grant may indicate, for example, one or more parameters (e.g., transmission parameters) to be used for an upcoming sidelink transmission, such as one or more resource blocks (e.g., for the TB 335) to be used for an upcoming sidelink transmission on the PSSCH 320, one or more subframes to be used for an upcoming sidelink transmission, and / or the MCS to be used for an upcoming sidelink transmission. In some aspects, the UE 305 may generate a sidelink grant that indicates one or more parameters for semi - persistent scheduling (SPS), such as the periodicity of sidelink transmissions. Additionally or alternatively, the UE 305 may generate a sidelink grant for event - driven scheduling (such as for on - demand sidelink messages).

[0079] As indicated above, Figure 3 is provided as an example. Other examples may differ from the example Figure 3 described with respect to

[0080] Figure 4 is a diagram illustrating Example 400 of sidelink communication and access link communication according to the present disclosure.

[0081] As Figure 4 shown, the transmitter (Tx) / receiver (Rx) UE 405 and the Rx / Tx UE 410 may communicate with each other via the sidelink 415, as described above in connection with Figure 3 described. As further shown in the figure, the network node 110 may communicate with the Tx / Rx UE 405 (e.g., directly or via one or more network nodes) via, for example, the first access link 420. Additionally or alternatively, in some sidelink modes, the network node 110 may communicate with the Rx / Tx UE 410 (e.g., directly or via one or more network nodes) via, for example, the second access link 425. The Tx / Rx UE 405 and / or the Rx / Tx UE 410 may correspond to one or more UEs described elsewhere herein, such as Figure 1 the UE 120. Thus, the direct link between UEs (e.g., via the PC5 interface) may be referred to as a sidelink, and the direct link between the network 110 and the UE 120 (e.g., via the Uu interface) may be referred to as an access link. Sidelink communication may be sent via the sidelink, and access link communication may be sent via the access link. The access link communication may be downlink communication (from the network node 110 to the UE 120) or uplink communication (from the UE 120 to the network node 110).

[0082] As indicated above, Figure 4 is provided as an example. Other examples may differ from the example Figure 4 described with respect to

[0083] Figure 5 is a diagram illustrating Example 500 of discontinuous reception (DRX) configuration according to the present disclosure.

[0084] The power consumption of a UE may directly affect the operating duration of the UE. Higher power consumption of a UE may use battery resources faster than lower power consumption and result in a shorter operating duration (e.g., relative to the operating duration associated with lower power consumption). In some aspects, the UE may disable communication links and / or transition communication links to a sleep mode to save power.

[0085] As Figure 5As shown, network node 110 may send a DRX configuration to UE 120 to configure a DRX cycle 505 for UE 120. For illustration, the DRX configuration may be associated with the access link between network node 110 and UE 120 (e.g., an access link DRX configuration). However, in other examples, the DRX configuration may be associated with a sidelink between UEs (e.g., a sidelink DRX configuration). Thus, network node 110 may send an access link DRX configuration and / or a sidelink DRX configuration to UE 120. Alternatively or additionally, a first UE 120 may send a sidelink DRX configuration to a second UE 120 at least in part based on coordinating sidelink transmissions between the first UE 120 and the second UE 120 (e.g., using the sidelink). For example, the first UE 120 may configure a sidelink DRX configuration for the second UE 120, and / or the first UE 120 may notify the second UE 120 that the first UE 120 is configured with a sidelink DRX configuration.

[0086] The DRX cycle 505 may include a DRX on-duration 510 (e.g., during which UE 120 is awake or active) and an opportunity to enter a DRX sleep state 515. As used herein, the time during which UE 120 is configured to be active during the DRX on-duration 510 may be referred to as active time, and the time during which UE 120 is configured to be in the DRX sleep state 515 may be referred to as inactive time. As described below, UE 120 may monitor the PDCCH during active time at least in part based on the DRX cycle 505 being associated with the access link, and may avoid monitoring the PDCCH during inactive time. However, in other respects, UE 120 may monitor the PSCCH during active time at least in part based on the DRX cycle 505 being associated with the sidelink, and may avoid monitoring the PSCCH during inactive time.

[0087] During the DRX-on duration 510 (e.g., active time), the UE 120 may monitor the control channel (e.g., PDCCH or PSCCH), as shown by reference numeral 520. For example, the UE 120 may monitor the PDCCH for DCI related to the UE 120, or monitor the PSCCH for SCI related to the UE 120. If the UE 120 does not detect and / or does not successfully decode any communication (e.g., PDCCH communication or PSCCH communication) intended for the UE 120 during the DRX-on duration 510, the UE 120 may enter the sleep state 515 (e.g., inactivity time) at the end of the DRX-on duration 510, as shown by reference numeral 525. In this way, the UE 120 can save battery power and reduce power consumption. As shown, the DRX cycle 505 may repeat periodically according to the DRX configuration.

[0088] In some aspects, the UE 120 may support different sleep states (also referred to as sleep modes). For example, different sleep states may be configured to enable granular adjustment of transmission and / or reception using techniques in the time domain, frequency domain, spatial domain, and / or power domain to reduce power consumption. Alternatively or additionally, different sleep states may be associated with different periodicities. By way of illustration, the UE 120 may enter a light sleep state with a first configured periodicity or a deep sleep state with a second configured periodicity, where the second configured periodicity is longer than the first periodicity. The light sleep state may enable the UE 120 to respond to the wake-up signal faster than the deep sleep state, at least in part based on the shorter periodicity of the light sleep state. The deep sleep state may provide more power savings to the UE 120 than the light sleep state, at least in part based on the longer periodicity. Thus, the light sleep state and the deep sleep state may differ in terms of power consumption.

[0089] If the UE 120 detects and / or successfully decodes a communication intended for the UE 120, the UE 120 may remain in an active state (e.g., wake up) for the duration of the DRX inactivity timer 530 (e.g., this may extend the active time). The UE 120 may start the DRX inactivity timer 530 at the time of receiving the communication (e.g., within the TTI (such as a time slot or subframe) of receiving the communication). The UE 120 may remain in the active state until the DRX inactivity timer 530 expires, at which time the UE 120 may enter the sleep state 515 (e.g., during the inactive time), as shown by reference numeral 535. During the duration of the DRX inactivity timer 530, the UE 120 may continue to monitor for communications (e.g., PDCCH communications or PSCCH communications), may obtain data communications (e.g., on a downlink data channel (such as a PDSCH) or a sidelink data channel (such as a PSSCH)), and / or may prepare and / or transmit communications (e.g., an uplink communication on a PUSCH or a sidelink communication on a PSSCH). The UE 120 may restart the DRX inactivity timer 530 each time a communication for the UE 120 is detected for an initial transmission (e.g., but not for a retransmission). By operating in this manner, the UE 120 may save battery power and reduce power consumption by entering the sleep state 515.

[0090] In some aspects, the UE 120 may simultaneously maintain multiple connections, such as an access link to the network node 110 and a sidelink to another UE 120, as regarding Figure 4As described. To save power, each connection may be associated with a respective DRX cycle and / or DRX configuration. By way of illustration, UE 120 may transition the access link to a first sleep state (e.g., at least partially based on the access link DRX configuration) and transition the sidelink to a second sleep state (e.g., at least partially based on the sidelink DRX configuration). In some aspects, each DRX configuration at UE 120 may have a different DRX cycle, different periodicity, and / or different start time relative to other DRX cycles managed by UE 120, resulting in reduced power savings at UE 120. For example, UE 120 may transition a second connection to the active state for a second DRX on-duration associated with a second DRX cycle instead of remaining in the inactive mode and / or sleep state between a first DRX on-duration (e.g., DRX on-duration 510) associated with a first DRX cycle. That is, the second DRX on-duration associated with the second DRX cycle may occur during the sleep state associated with the first DRX cycle. Thus, in a scenario associated with two non-aligned DRX cycles managed by UE 120, UE 120 may transition to the active state twice as frequently and consume power faster relative to managing a single DRX cycle.

[0091] In some aspects, network node 110 may configure the access link DRX cycle and the sidelink DRX cycle to align the DRX cycles (e.g., align the start time, DRX cycle, and / or periodicity). In the aligned DRX cycles, UE 120 may monitor multiple signals while operating in the active state, such as by monitoring PDCCH communications using the access link and PSCCH communications using the sidelink connection. Thus, UE 120 enables two connections and / or transitions two connections to the active state, resulting in UE 120 consuming power faster relative to managing a single DRX cycle. The increased power consumption may result in a reduction in the lifespan and / or operating duration of UE 120.

[0092] Some of the techniques and apparatuses described herein use the sidelink to provide a relayed wake-up signal for the access link. In some aspects, a first UE may receive, from a network node, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node, using a first access link between the first UE and the network node. The first UE may send, to the second UE, a second indication of the access link wake-up signal, at least partially based on using a sidelink between the first UE and the second UE.

[0093] In some aspects, a network node may use a second access link between the network node and a second UE to send an instruction for transitioning the second access link to a deep sleep mode. At a later point in time, the network node may use a first access link between the network node and a first UE to send an indication of an access link wake-up signal associated with the second access link to the first UE. The network node may send the access link wake-up signal to the first UE at least in part based on the first UE having a sidelink to the second UE.

[0094] In some aspects, the second UE may use an access link between the second UE and the network node to receive an instruction for transitioning the access link to a deep sleep mode from the network node. At a later time, the second UE may use a sidelink between the first UE and the second UE to receive an indication of an access link wake-up signal associated with the access link from the first UE.

[0095] By using the sidelink to relay the access link wake-up signal to the second UE, the first UE may enable the second UE to transition the access link between the second UE and the network node to an inactive state for a longer duration relative to transitioning the access link to a light sleep state (e.g., at least in part based on the deep sleep state). Alternatively or additionally, the second UE may maintain responsiveness to the access link wake-up signal at least in part based on a sidelink DRX cycle that is configured with a shorter periodicity relative to the deep sleep state. By relaying the access link wake-up signal, the first UE may also enable the second UE to monitor a single DRX cycle (e.g., the sidelink DRX cycle) when the access link is in a sleep state and / or an inactive state (e.g., at least in part based on the access link DRX cycle), reduce power consumption, and increase the lifespan and / or operational duration of the second UE. In some aspects, the first UE may obtain an amount of power that meets a high power threshold and / or more power relative to the second UE. Accordingly, the first UE may monitor multiple connections, and at least in part based on the power difference available to each UE, the first UE may have a longer operational duration relative to the second UE that monitors multiple connections. Accordingly, the first UE may be able to monitor the access link on behalf of the second UE, and the second UE may transition the access link to an inactive mode for a longer duration, reduce power consumption, and extend the battery life at the second UE.

[0096] As indicated above, Figure 5 is provided as an example. Other examples may be different from the examples described with respect to Figure 5 which are different.

[0097] Figure 6FIG. 600 is a diagram illustrating an example 600 of a wireless communication procedure between a network node (e.g., network node 110) according to the present disclosure, a first UE 120 (shown as first UE 602), and one or more other UEs 120 (shown as second UE 604-1 and third UE 604-2). For simplicity, example 600 shows two other UEs (e.g., second UE 604-1 and third UE 604-2) that are at least partially connected to first UE 602 (e.g., a high-power UE) based on sidelink, but other examples may include more or fewer UEs (e.g., one or more low-power UEs) that are at least partially connected to first UE 602 based on sidelink.

[0098] In some aspects, first UE 602 may obtain a certain amount of power that meets a high-power threshold and / or more power than second UE 604-1 and / or third UE 604-2. By way of illustration, first UE 602 may be a vehicle that includes a generator and / or has a first battery with a large power storage capacity (e.g., meeting the high-power threshold), and second UE 604-1 and / or third UE 604-2 may each be a mobile device with a second battery that has a lower power storage capacity than the first battery. As another example, first UE may be a mobile device or a laptop computer, and second UE 604-1 and / or third UE 604-2 may be wearable devices. Thus, at least partially based on the relative power level and / or power storage capacity, first UE 602 may be referred to as a high-power UE, and second UE 604-1 and / or third UE 604-2 may be referred to as low-power UEs.

[0099] As shown by reference numeral 610, network node 110 may establish access links (e.g., connections to the RAN) with one or more UEs at least partially based on one or more RATs. For example, network node 110 may establish a first access link with first UE 602 at least partially based on a first RAT, a second access link with second UE 604-1 at least partially based on the first RAT or a second RAT, and / or a third access link with third UE 604-2 at least partially based on the first RAT, the second RAT, and / or a third RAT. By way of illustration, first UE 602, second UE 604-1, and / or third UE 604-2 may perform corresponding initial access procedures with network node 110 to obtain access to the RAN.

[0100] As part of the initial access procedure, each UE may provide the network node 110 with capability information, such as capability information regarding whether the respective UE supports the relay wake-up operation. In some aspects, a UE (such as the first UE 602) may specify a permission indication in the capability information, and the permission indication specifies that the UE consents to become a relay UE for the relay wake-up operation. "Relay wake-up operation" may mean that the network node 110 (e.g., using an access link) sends an access link wake-up signal associated with a second UE to the first UE, and / or the first UE relays the access link wake-up signal to the second UE using a sidelink.

[0101] As shown by reference numeral 620, the first UE 602 may establish a first sidelink with the second UE 604-1, and / or a second sidelink with the third UE 604-2, as described with respect to Figure 3 and Figure 4 . For example, the first UE 602 may communicate with the second UE 604-1 (e.g., using the first sidelink) and / or with the second UE 604-2 (e.g., using the second sidelink) at least in part based on using any combination of PSCCH, PSSCH, and / or PSFCH. Accordingly, each of the first UE 602, the second UE 604-1, and / or the third UE 604-2 may maintain at least two radio connections: an access link with the network node 110 and a sidelink connection with another UE, as described with respect to Figure 4 .

[0102] As shown by reference numeral 630, the first UE 602, the second UE 604-1, and / or the third UE 604-2 may send and the network node 110 may receive an association indication. By way of illustration, the first UE 602 may send a first association indication to the network node using a first access link, and the first association indication may specify that the first UE 602 is associated with the second UE 604-1 and the third UE 604-1. Alternatively or additionally, the second UE 604-1 may send a second association indication to the network node using a second access link, and the second association indication may specify that the second UE 604-1 is associated with the first UE 602. In some aspects, the third UE 604-2 may send a third association indication to the network node using a third access link, and the third association indication may specify that the third UE 604-2 is associated with the first UE 602.

[0103] Any combination of a first association indication, a second association indication, and / or a third association indication may include and / or specify a respective UE identifier associated with the sending UE for each UE. In some aspects, the UE identifier may be at least partially based on a sidelink identifier and / or a network identifier. As an example, the sidelink identifier may include a layer 1 sidelink identifier, a layer 2 sidelink identifier, and / or a layer 3 identifier. The network identifier may include an international mobile subscriber identity (IMSI) and / or an s-temporary mobile subscriber identity (s-TMSI).

[0104] For illustration, the first UE 602 may specify and / or include, in the first association indication, a UE identifier associated with the second UE 604-1 and / or a UE identifier associated with the third UE 604-2, at least partially based on the first UE 602 establishing a sidelink with the second UE 604-1 and / or the third UE 604-2. The second UE 604-1 may specify and / or include, in the second association indication, a UE identifier associated with the first UE 602. Alternatively or additionally, the second UE 604-1 may exclude, from the second association indication, a UE identifier associated with the third UE 604-2, at least partially based on not establishing a sidelink with the third UE 604-2. The third UE 604-2 may specify and / or include, in the third association indication, a UE identifier associated with the first UE 602, and / or exclude, from the third association indication, a UE identifier associated with the second UE 604-1. In some aspects, the sending UE of the associated indication may include, in the association indication, a network identity associated with the sending UE and a sidelink identity associated with the associated UE.

[0105] Each association indication may specify that the association is at least partially based on a sidelink. That is, the association indication may explicitly and / or implicitly specify that two UEs have established a sidelink with each other. For example, the association indication may include and / or specify a bit field that indicates a sidelink association when set to a first value (e.g., “1”) and indicates no sidelink association when set to a second value (e.g., “0”). For illustration, the second UE 604-1 may include, in the second association indication, a UE identifier associated with the first UE 602 and set a first bit field to the first value to indicate a sidelink association. Alternatively or additionally, the second UE 604-1 may include, in the second association indication, a UE identifier associated with the third UE 604-2 and set a second bit field to the second value to indicate no sidelink association. However, in some aspects, the second UE 604-1 may exclude the UE identifier associated with the third UE 604-2 and implicitly indicate no sidelink association. Thus, including and / or excluding the UE identifier may implicitly indicate whether the UE has a sidelink association.

[0106] As part of the first association indication, the first UE 602 may send a permission indication to a network node, the permission indication specifying that the first UE agrees to become a relay UE for the relay wake-up operation. As an example, the first association indication may specify the permission indication and / or the first UE agrees to become a relay UE. However, the first UE 602 may send the permission indication separately from the first association indication, such as in capability information and / or in a different transmission.

[0107] As shown by reference numeral 640, the network node 110 may send and one or more of the first UE 602, the second UE 604-1, and / or the third UE 604-2 may receive a wake-up identifier. As an example, the network node 110 may send one or more wake-up identifiers to the first UE 602 (e.g., using a first access link), such as a first wake-up identifier associated with the second UE 604-1 and / or a second wake-up identifier associated with the third UE 604-2. Alternatively or additionally, the network node 110 may send a corresponding wake-up identifier to a corresponding UE, such as sending the first wake-up identifier to the second UE 604-1 (e.g., using a second access link) and / or sending the second wake-up identifier to the third UE 604-2 (e.g., using a third access link). As shown in example 600, the network node 110 may send and / or assign a wake-up identifier to a UE before activating the relay wake-up operation and / or before sending an access link wake-up signal to the first UE 602 for relaying.

[0108] In some aspects, the network node 110 may send a temporary identifier associated with the relay wake-up operation and / or a temporary identifier of the network identity of a fuzzily assigned UE (e.g., the second UE 604-1 and / or the third UE 604-2) as a wake-up identifier. By way of illustration, the temporary identifier associated with the relay wake-up operation may fuzz the IMSI associated with the UE and / or the s-TMSI associated with the UE. Alternatively or additionally, the wake-up identifier may be at least partially based on a mapping to an access link identifier (e.g., network identity) and / or a sidelink identifier. For example, the wake-up identifier may be mapped to a layer 1 sidelink identifier, a layer 2 sidelink identifier, and / or a layer 3 sidelink identifier. Alternatively or additionally, the wake-up identifier may be an encoded sidelink identifier and / or an encoded access link identifier. The receiving device may decode the wake-up identifier and / or use the mapping to obtain the access link identifier and / or the sidelink identifier.

[0109] As shown by reference numeral 650, the network node 110 may send and one or more of the first UE 602, the second UE 604-1, and / or the third UE 604-2 may receive a relay mode indication that indicates activation of a relayed wake-up operation. In some aspects, activation of the relayed wake-up operation may implicitly direct the second UE 604-1 and / or the third UE 604-2 to transition the access link to a deep sleep mode, as described with respect to Figure 5 . Alternatively or additionally, the network node 110 may explicitly indicate transitioning the access link to a deep sleep mode in a transmission separate from the relay mode indication or as part of the relay mode indication. The network node 110 may send instructions for transitioning to the deep sleep mode based at least in part on any combination of an RRC message, a media access control (MAC) control element (CE), and / or DCI.

[0110] Instructions for transitioning to the deep sleep mode and / or activating the relayed wake-up operation (whether implicit or explicit) may indicate enabling DRX operation for the access link (e.g., access link DRX operation). Alternatively or additionally, instructions for transitioning the access link to the deep sleep mode may implicitly or explicitly indicate preserving the sidelink between UEs and / or avoiding transitioning the sidelink to the deep sleep mode. In some aspects, the access link DRX configuration may be different from the sidelink DRX configuration. For example, the periodicity associated with the access link DRX configuration may be independent of the periodicity associated with the sidelink DRX configuration. By way of illustration, the access DRX periodicity associated with the access DRX operation may be longer than the sidelink DRX periodicity and / or may not be an integer multiple of the sidelink DRX periodicity. As another example, the start time associated with the access link DRX configuration may not align with the start time associated with the sidelink DRX configuration. As yet another example, the access link DRX configuration may be at least partially based on the deep sleep mode, and the sidelink DRX configuration may be at least partially based on the light sleep mode. Accordingly, the second UE 604-1 and / or the third UE 604-2 may perform a first DRX operation (e.g., access link DRX operation) for the access link and a second DRX operation (e.g., sidelink DRX operation) for the sidelink.

[0111] In some aspects, network node 110 may send, together with and / or as part of a relay mode indication, one or more UE identifiers associated with a relayed wake-up operation, such as a UE identifier associated with a relay UE (e.g., a sidelink identifier and / or a wake-up identifier). That is, network node 110 may indicate the identity of the relay UE. As shown in example 600, first UE 602, second UE 604-1, and / or third UE 604-2 may receive a relay mode indication before receiving an indication of an access link wake-up signal.

[0112] As shown by reference numerals 660-1 and 660-2 respectively, second UE 604-1 and / or third UE 604-2 may transition the respective access link to a deep sleep mode at least in part based on receiving a relayed mode indication associated with activating a relayed wake-up operation. That is, activating a relayed wake-up operation may implicitly indicate transitioning the access link to a deep sleep mode. Alternatively or additionally, second UE 604-1 and / or third UE 604-2 may transition the respective access link to a deep sleep mode at least in part based on receiving an explicit instruction to transition the access link to a deep sleep mode (e.g., together with the relayed mode indication or in a separate transmission). In some aspects, second UE 604-1 and / or third UE 604-2 may transition the access link to a deep sleep mode at least in part based on an access link DRX configuration indicated by network node 110 (e.g., access link DRX periodicity) and / or at least in part based on an access link DRX configuration specified by a communication standard. In some aspects, second UE 604-1 and / or third UE 604-2 may transition a sidelink connection to a light sleep mode that has a shorter DRX periodicity than the deep sleep mode. In other examples, second UE 604-1 may transition the respective access link to a deep sleep mode and third UE 604-2 may keep the respective access link in an active mode (and vice versa). Thus, second UE 604-1 and / or third UE 604-2 may transition the respective access link to a deep sleep mode regardless of whether another UE keeps the access link in an active mode or transitions the respective active link to a deep sleep mode. Alternatively or additionally, a UE may transition the access link to a deep sleep mode regardless of whether the sidelink is in an active state or is transitioning to a sleep mode (e.g., a light sleep mode or a deep sleep mode).

[0113] As shown by reference numeral 670, the network node 110 may send and the first UE 602 may receive a wake-up signal associated with an active access link (e.g., an access link wake-up signal) and / or a wake-up signal associated with transitioning the access link from a sleep mode (e.g., a deep sleep mode and / or an inactive mode) to an active mode. As an example, the network node 110 may send an access link wake-up signal to the first UE 602 and instruct the first UE 602 to relay the access link wake-up signal to a target UE (e.g., the second UE 604-1 or the third UE 604-2). That is, the network node 110 may use the first access link to send an access link wake-up signal associated with another UE and / or another access link to the first UE 602. For example, the network node 110 may use the access link wake-up signal to indicate a UE identifier (e.g., a wake-up identifier or a sidelink identifier) associated with the second UE 604-1 or the third UE 604-2).

[0114] As shown by reference numeral 680, the first UE 602 may send and the target UE (shown as the second UE 604-1) may receive an access link wake-up signal and / or an indication of the access link wake-up signal. As an example, the first UE 602 may use a mapping that maps a wake-up identifier to a sidelink identifier associated with the target UE, and the first UE 602 may send the access link wake-up signal to the target UE at least in part based on the sidelink. Alternatively or additionally, the first UE 602 may decode the wake-up identifier to obtain a sidelink identifier (e.g., a layer 1 sidelink identifier, a layer 2 sidelink identifier, and / or a layer 3 sidelink identifier) associated with the target UE. In some aspects, the first UE 602 may relay the access link wake-up signal and / or send an indication of the access link wake-up signal at least in part based on a sidelink DRX cycle associated with the target UE such that the target UE receives the access link wake-up signal (and / or the indication of the access link wake-up signal) at a duration associated with a DRX-on duration (e.g., a sidelink DRX-on duration associated with the target UE).

[0115] In some aspects, the first UE 602 may send and the target UE may receive a sidelink wake-up signal that indicates that an access link wake-up signal has occurred. By way of illustration, the sidelink wake-up signal may include an explicit indication that the sidelink wake-up signal is associated with an access link (e.g., a second access link) between the target UE and the network node 110. That is, the first UE 602 may avoid sending (e.g., via the sidelink) an explicit access link wake-up signal to the target UE and instead may send a sidelink wake-up signal to the target UE. The sidelink wake-up signal may include an explicit indication that the sidelink wake-up signal is associated with the access link. By way of illustration, the sidelink wake-up signal may include a bit field, and the first UE 602 may set a bit in the bit field to a value (e.g., "1" or "0") that indicates that the sidelink wake-up signal is associated with the access link.

[0116] As shown by reference numeral 690, the target UE (shown as the second UE 604-1) may transition the access link to the active mode. For example, the target UE may decode a wake-up identifier from the access link wake-up signal and / or the sidelink wake-up signal. The target UE may identify that the wake-up identifier is associated with the target UE and the access link and transition the access link to the active mode.

[0117] By using the sidelink to relay the access link wake-up signal to the second UE, the first UE may enable the second UE to transition the access link between the second UE and the network node to the inactive state for a longer duration (e.g., deep sleep state) relative to transitioning the access link to the light sleep state. Alternatively or additionally, the second UE may maintain responsiveness to the access link wake-up signal at least in part based on a sidelink DRX cycle that is configured with a shorter periodicity relative to the deep sleep state. By relaying the access link wake-up signal, the first UE may also enable the second UE to monitor a single DRX cycle (e.g., the sidelink DRX cycle) when the access link is in the sleep state and / or the inactive state (e.g., at least in part based on the access link DRX cycle), reduce power consumption, and increase the lifespan and / or operational duration of the second UE.

[0118] As indicated above, Figure 6 is provided by way of example. Other examples may be different from the example described with respect to Figure 6 above.

[0119] Figure 7FIG. 700 is a diagram illustrating an example 700 of a wireless communication procedure between a network node (e.g., network node 110) according to the present disclosure, a first UE 120 (shown as first UE 702), and one or more other UEs 120 (shown as second UE 704-1 and third UE 704-2). For simplicity, example 700 shows two other UEs (e.g., second UE 704-1 and third UE 704-2) that are at least partially connected to the first UE 702 (e.g., high-power UE) based on a sidelink, but other examples may include more or fewer UEs (e.g., one or more low-power UEs) that are at least partially connected to the first UE 702 based on a sidelink.

[0120] As shown by reference numeral 710, any combination of network node 110, first UE 702, second UE 704-1, and / or third UE 704-2 may be activated to operate at least partially based on a relayed wake-up signal operation, as described with respect to example 600. For example, first UE 702, second UE 704-1, and / or third UE 704-2 may establish respective access links with network node 110, as described with respect to reference numeral 610. Alternatively or additionally, first UE 702 may establish respective sidelinks with second UE 704-1 and / or third UE 704-2, as described with respect to reference numeral 620. Network node 110 may send a relayed mode indication associated with activating the relayed wake-up operation, as described with respect to reference numeral 650. The relayed mode indication associated with activating the relayed wake-up operation may be at least partially based on network node 110 receiving one or more association indications as described with respect to reference numeral 630 and / or network node 110 sending one or more wake-up identifiers as described with respect to reference numeral 640.

[0121] As shown by reference numeral 720, the first UE 702, the second UE 704-1, and / or the third UE 704-2 may send and the network node 110 may receive a disassociation indication. A "disassociation indication" may specify that two UEs that were previously associated with each other (e.g., via a sidelink) are no longer associated with each other. As an example, the first UE 702 may use a first access link between the first UE 702 and the network node 110 to send a first disassociation indication that specifies that the first UE and the second UE are disassociated. The first UE 702 may use the first disassociation indication to indicate a wake-up identifier (e.g., a temporary identifier and / or a sidelink identifier) assigned to the second UE. Alternatively or additionally, the second UE 704-1 may send a second disassociation indication to the network node 110, and / or the third UE 704-2 may send a third disassociation indication to the network node 110. By way of illustration, the second UE 704-1 and / or the third UE 704-2 may send a disassociation indication to the network node 110 at least in part based on a random access channel (RACH) transmission and / or a grant-free transmission. In some aspects, the disassociation indication may specify a reason for the disassociation. For example, the second UE 704-1 may indicate that a sidelink between the first UE 702 and the second UE 704-1 has been torn down, terminated, and / or lost. By way of illustration, the first UE 702, the second UE 704-1, and / or the third UE 704-2 may move out of the operating range of one or more other UEs (e.g., for a sidelink). For clarity, example 700 shows the first UE 702, the second UE 704-1, and the third UE 704-2 sending a disassociation indication directly to the network node 110. However, in other examples, the second UE 704-1 and / or the third UE 704-2 may send a disassociation indication to the first UE 702 at least in part based on the respective sidelink, and the first UE 702 may relay the disassociation indication to the network node 110 at least in part based on the access link. For example, the second UE 704-1 may use the sidelink and send a disassociation indication to the first UE 702 as part of the process of tearing down the sidelink, and the first UE 702 may relay the disassociation indication to the network node 110.

[0122] As indicated by reference numeral 730, the network node 110 may send and the first UE 702, the second UE 704-1, and / or the third UE 704-2 may receive a relay mode indication that specifies deactivation of the relayed wake-up signal operation. That is, the relay mode indication may direct the first UE 702, the second UE 704-1, and / or the third UE 704-2 to deactivate the relayed wake-up signal operation. By way of illustration, the network node 110 may send the relay mode indication to the first UE at least in part based on using a first access link (e.g., between the network node 110 and the first UE 702), send a second relay mode indication to the second UE 704-1 based on using a second access link (e.g., between the network node 110 and the second UE 704-1), and / or send a third relay mode indication to the third UE 704-2 at least in part based on using a third access link (e.g., between the network node 110 and the third UE 704-2). In some aspects, the first UE 702 may avoid relaying an access link wake-up signal to the second UE 704-1 and / or the third UE 704-2 at least in part based on receiving the relay mode indication associated with deactivating the relayed wake-up operation. Alternatively or additionally, the second UE 704-1 and / or the third UE 704-2 may send to the corresponding access link in an active mode and / or a light sleep mode at least in part based on receiving the relay mode indication associated with deactivating the relayed wake-up operation.

[0123] For clarity, example 700 shows the network node 110 sending corresponding relayed mode indications (e.g., associated with deactivating the relayed wake-up signal operation) to the first UE 702, the second UE 704-1, and the third UE 704-2 at least in part based on the respective access links associated with each UE. However, in other examples, the network node 110 may send the relayed mode indication associated with deactivating the relayed wake-up signal operation to the first UE at least in part based on using an access link, and the first UE 702 may relay the relayed mode indication to the second UE 704-1 and / or the third UE 704-2 at least in part based on using a corresponding sidelink.

[0124] As indicated above, Figure 7 is provided as an example. Other examples may differ from the examples described with respect to Figure 7 that are described.

[0125] Figure 8FIG. 800 is an illustration of an example process 800 that may be performed by a first UE (e.g., UE 120 and / or first UE 602) in accordance with the present disclosure. Example process 800 is an example in which a first UE (e.g., UE 120 and / or first UE 602) uses a sidelink to perform operations associated with a relay wake signal for an access link.

[0126] As Figure 8 shown, in some aspects, process 800 may include: receiving, using a first access link, from a network node a first indication of an access link wake signal associated with a second access link between a second UE and the network node (block 810). For example, the first UE (e.g., using Figure 11 communication manager 140 and / or receiving component 1102 depicted in FIG. 1) may receive, using the first access link, from the network node the first indication of the access link wake signal associated with the second access link between the second UE and the network node, as described above.

[0127] As Figure 8 further shown, in some aspects, process 800 may include: sending, at least in part based on using a sidelink between the first UE and the second UE, to the second UE a second indication of the access link wake signal (block 820). For example, the first UE (e.g., using Figure 11 communication manager 140 and / or transmitting component 1104 depicted in FIG. 1) may send, at least in part based on using the sidelink between the first UE and the second UE, to the second UE the second indication of the access link wake signal, as described above.

[0128] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0129] In a first aspect, process 800 includes: receiving, using a first access link, a wake identifier assigned to a second UE before receiving an access link wake signal from a network node.

[0130] In a second aspect, the wake identifier includes a temporary identifier that obscures a network identity assigned to the second UE.

[0131] In a third aspect, the network identity includes at least one of: an international mobile subscriber identity; or an s-temporary mobile subscriber identity.

[0132] In a fourth aspect, the second indication specifies the wake identifier.

[0133] In a fifth aspect, the wake-up identifier is at least partially based on a mapping between an access link UE identifier and a sidelink identifier, and process 800 includes: decoding the wake-up identifier to obtain the sidelink identifier, and sending a second indication of the access link wake-up signal to a second UE includes: sending the second indication of the access link wake-up signal to the second UE at least partially based on using the sidelink identifier.

[0134] In a sixth aspect, the sidelink identifier is a layer 1 sidelink identifier, a layer 2 sidelink identifier, or a layer 3 sidelink identifier.

[0135] In a seventh aspect, the second indication of the access link wake-up signal includes a sidelink wake-up signal, and the sidelink wake-up signal includes an explicit indication that the sidelink wake-up signal is associated with a second access link between the second UE and a network node.

[0136] In an eighth aspect, the explicit indication includes a bit in a bit field, and the bit is set to a value indicating that the sidelink wake-up signal is associated with the second access link.

[0137] In a ninth aspect, process 800 includes: sending an association indication to a network node using a first access link, the association indication specifying that a first UE and a second UE are associated at least partially based on the sidelink.

[0138] In a tenth aspect, process 800 includes: sending a permission indication to a network node using a first access link, the permission indication specifying that the first UE agrees to become a relay UE.

[0139] In an eleventh aspect, process 800 includes: receiving a relay mode indication before receiving a first indication of the access link wake-up signal, the relay mode indication specifying that the network node is activating a relayed wake-up operation.

[0140] In a twelfth aspect, process 800 includes: receiving one or more UE identifiers associated with the relayed wake-up operation together with the relay mode indication.

[0141] In a thirteenth aspect, the one or more UE identifiers include at least one of the following: a sidelink identifier; or a wake-up identifier.

[0142] In a fourteenth aspect, the first indication of the access link wake-up signal specifies a transition from an access link sleep mode to an access link active mode.

[0143] In a fifteenth aspect, process 800 includes: sending a disassociation indication to a network node using a first access link, the disassociation indication specifying that the UE and the second UE are disassociated.

[0144] In a sixteenth aspect, sending a disassociation indication includes: sending a wake-up identifier assigned to a second UE.

[0145] In a seventeenth aspect, the wake-up identifier includes: a temporary identifier assigned by a network node, the temporary identifier obscuring a network identity assigned to the second UE; or a sidelink identifier.

[0146] In an eighteenth aspect, process 800 includes: receiving, using a first access link, a relay mode indication from a network node, the relay mode indication specifying that the network node is deactivating a relayed wake-up operation.

[0147] In a nineteenth aspect, process 800 includes: avoiding relaying a second access link wake-up signal to a second UE, at least in part based on receiving the relay mode indication associated with deactivating the relayed wake-up operation.

[0148] Although Figure 8 example boxes of process 800 are shown, in some aspects, process 800 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner compared to those depicted in Figure 8 . Additionally or alternatively, two or more boxes of process 800 may be executed in parallel.

[0149] Figure 9 is a diagram illustrating an example process 900, such as may be performed by a network node, according to the present disclosure. Example process 900 is an example where a network node (e.g., network node 110) uses a sidelink to perform operations associated with a relayed wake-up signal of an access link.

[0150] As Figure 9 shown, in some aspects, process 900 may include: sending, using a second access link associated with a second UE, an instruction to transition the second access link to a deep sleep mode (block 910). For example, a network node (e.g., using the communication manager 150 and / or the sending component 1204 depicted in Figure 12 ) may send, using a second access link associated with a second UE, an instruction to transition the second access link to a deep sleep mode, as described above.

[0151] As Figure 9 further shown, in some aspects, process 900 may include: sending, using a first access link, an indication of an access link wake-up signal associated with a second access link to a first UE associated with a sidelink between the first UE and the second UE (block 920). For example, a network node (e.g., using Figure 12The communication manager 150 and / or the sending component 1204 depicted therein may send, using a first access link, an indication of an access link wake-up signal associated with a second access link to the first UE associated with a sidelink between the first UE and the second UE, as described above.

[0152] Procedure 900 may include additional aspects, such as any individual aspect or any combination of aspects described below and / or in connection with one or more other procedures described elsewhere herein.

[0153] In a first aspect, procedure 900 includes: receiving an association indication that specifies that a first UE and a second UE are associated at least in part based on a sidelink.

[0154] In a second aspect, receiving the association indication further includes: receiving the association indication from the first UE or the second UE.

[0155] In a third aspect, instructions for transitioning a second access link to a deep sleep mode indicate that a sidelink between the first UE and the second UE is to be retained.

[0156] In a fourth aspect, procedure 900 includes: sending a wake-up identifier assigned to the second UE before sending an access link wake-up signal to at least one of the first UE or the second UE. In some aspects, the indication of the access link wake-up signal associated with the second UE includes the wake-up identifier assigned to the second UE.

[0157] In a fifth aspect, the wake-up identifier includes a temporary identifier that obscures a network identity assigned to the second UE.

[0158] In a sixth aspect, the network identity includes at least one of the following: an international mobile subscriber identity; or an s-temporary mobile subscriber identity.

[0159] In a seventh aspect, the wake-up identifier is at least partially based on a mapping between an access link UE identifier and a sidelink identifier.

[0160] In an eighth aspect, the sidelink identifier is a layer 1 sidelink identifier, a layer 2 sidelink identifier, or a layer 3 sidelink identifier.

[0161] In a ninth aspect, procedure 900 includes: receiving, using the first access link, a permission indication that specifies that the first UE agrees to become a relay UE.

[0162] In a tenth aspect, procedure 900 includes: sending a relay mode indication that specifies activation of a relayed wake-up operation before sending an indication of an access link wake-up signal to at least one of the first UE or the second UE.

[0163] In an eleventh aspect, a relay mode indication specifies one or more UE identifiers associated with activating a relayed wake-up operation.

[0164] In a twelfth aspect, procedure 900 includes: a sidelink identifier; or a wake-up identifier.

[0165] In a thirteenth aspect, transmitting a relay mode indication includes: transmitting a relay mode indication to a second UE, and the relay mode indication specifies a sidelink identifier associated with a first UE.

[0166] In a fourteenth aspect, transmitting an instruction for transitioning a second access link to a deep sleep mode includes: transmitting the instruction at least in part based on including the instruction in at least one of the following: a radio resource control message; a MAC CE; or downlink control information.

[0167] In a fifteenth aspect, an instruction for transitioning a second access link to a deep sleep mode is associated with an access link DRX periodicity that is independent of a sidelink DRX periodicity associated with the second UE.

[0168] In a sixteenth aspect, the access link DRX periodicity is longer than the sidelink DRX periodicity.

[0169] In a seventeenth aspect, an indication of an access link wake-up signal specifies a transition from an access link sleep mode to an access link active mode.

[0170] In an eighteenth aspect, procedure 900 includes: receiving a disassociation indication that specifies that a first UE and a second UE are disassociated.

[0171] In a nineteenth aspect, receiving a disassociation indication includes: receiving the disassociation indication from a first UE using a first access link. In some aspects, the disassociation indication specifies a wake-up identifier assigned to the second UE.

[0172] In a twentieth aspect, a wake-up identifier includes: a temporary identifier assigned by a network node that obscures a network identity assigned to the second UE; or a sidelink identifier associated with the second UE.

[0173] In a twenty-first aspect, receiving a disassociation indication includes: receiving the disassociation indication from a second UE using a second access link at least in part based on at least one of the following: a random access channel transmission, or a grant-free transmission.

[0174] In a twenty-second aspect, receiving a disassociation indication includes: receiving the disassociation indication at least in part based on a random access channel transmission, and the random access channel transmission indicates a reason for the second UE to be disassociated from the first UE.

[0175] In a twenty-third aspect, process 900 includes: sending a relay mode indication that specifies deactivation of the relay wake-up operation.

[0176] In a twenty-fourth aspect, sending includes at least one of the following: sending a relay mode indication to a first UE using a first access link; or sending a relay mode indication to a second UE using a second access link.

[0177] Although Figure 9 example boxes of process 900 are shown, in some aspects, process 900 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner compared to those depicted in Figure 9 . Additionally or alternatively, two or more boxes of process 900 may be executed in parallel.

[0178] Figure 10 is a diagram illustrating an example process 1000, such as may be performed by a second UE in accordance with the present disclosure. Example process 1000 is an example where a second UE (e.g., UE 120 and / or second UE 604-1) uses a sidelink to perform operations associated with a relay wake-up signal of an access link.

[0179] As Figure 10 shown, in some aspects, process 1000 may include: receiving, using an access link between the second UE and a network node, an instruction from the network node to transition the access link to a deep sleep mode (block 1010). For example, the second UE (e.g., using the communication manager 140 and / or receiving component 1102 depicted in Figure 11 ) may receive, using an access link between the second UE and a network node, an instruction from the network node to transition the access link to a deep sleep mode, as described above.

[0180] As Figure 10 further shown, in some aspects, process 1000 may include: receiving, using a sidelink between the first UE and the second UE, an indication from the first UE of an access link wake-up signal associated with the access link (block 1020). For example, the second UE (e.g., using the communication manager 140 and / or receiving component 1102 depicted in Figure 11 ) may receive, using a sidelink between the first UE and the second UE, an indication from the first UE of an access link wake-up signal associated with the access link, as described above.

[0181] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0182] In a first aspect, process 1000 includes: before receiving an instruction, sending an association indication to a network node using an access link, the association indication specifying that a second UE and a first UE are associated at least partially based on a sidelink.

[0183] In a second aspect, an instruction for transitioning an access link to a deep sleep mode indicates to retain the sidelink with the first UE.

[0184] In a third aspect, process 1000 includes: before receiving an instruction, receiving a wake-up identifier assigned to the second UE.

[0185] In a fourth aspect, the wake-up identifier includes a temporary identifier that obscures the network identity assigned to the second UE.

[0186] In a fifth aspect, the network identity includes at least one of the following: an international mobile subscriber identity; or an s-temporary mobile subscriber identity.

[0187] In a sixth aspect, the wake-up identifier is at least partially based on a mapping between an access link UE identifier and a sidelink identifier.

[0188] In a seventh aspect, the sidelink identifier is a layer 1 sidelink identifier, a layer 2 sidelink identifier, or a layer 3 sidelink identifier.

[0189] In an eighth aspect, process 1000 includes: before receiving an instruction, receiving a relay mode indication from a network node using an access link, the relay mode indication specifying to activate a relayed wake-up operation.

[0190] In a ninth aspect, the relay mode indication specifies one or more UE identifiers associated with activating the relayed wake-up operation.

[0191] In a tenth aspect, process 1000 includes: a sidelink identifier; or a wake-up identifier.

[0192] In an eleventh aspect, the one or more UE identifiers include a sidelink identifier associated with the first UE.

[0193] In a twelfth aspect, receiving an instruction for transitioning an access link to a deep sleep mode includes: receiving the instruction at least partially based on including the instruction in at least one of the following: a radio resource control message; a MAC CE; or downlink control information.

[0194] In a thirteenth aspect, an instruction for transitioning an access link is associated with an access link DRX period that is independent of a sidelink DRX period associated with the second UE.

[0195] In a fourteenth aspect, the access link DRX period is longer than the sidelink DRX period.

[0196] In a fifteenth aspect, an indication of an access link wake-up signal specifies a transition from an access link sleep mode to an access link active mode.

[0197] In a sixteenth aspect, procedure 1000 includes: using an access link to send a disassociation indication that specifies that a first UE and a second UE are disassociated.

[0198] In a seventeenth aspect, sending the disassociation indication includes: sending the disassociation indication at least in part based on at least one of the following: a random access channel transmission, or a grant-free transmission.

[0199] In an eighteenth aspect, sending the disassociation indication includes: sending the disassociation indication at least in part based on a random access channel transmission, and the random access channel transmission indicates a reason for the second UE to be disassociated from the first UE.

[0200] In a nineteenth aspect, an indication of an access link wake-up signal specifies a wake-up identifier associated with a second UE.

[0201] In a twentieth aspect, procedure 1000 includes: decoding a wake-up identifier in an access link wake-up signal; identifying that the wake-up identifier is associated with a second UE; and transitioning to an active mode at least in part based on identifying that the wake-up identifier is associated with the second UE.

[0202] In a twenty-first aspect, an indication of an access link wake-up signal includes a sidelink wake-up signal that includes an explicit indication that the sidelink wake-up signal is associated with an access link between a second UE and a network node.

[0203] In a twenty-second aspect, the explicit indication includes a bit in a bit field that is set to a value indicating that the sidelink wake-up signal is associated with an access link between a second UE and a network node.

[0204] In a twenty-third aspect, procedure 1000 includes: learning through decoding that a sidelink wake-up signal indicates a transition of an access link to an active mode; and transitioning the access link to the active mode.

[0205] In a twenty-fourth aspect, procedure 1000 includes: transitioning an access link to a deep sleep mode at least in part based on receiving an instruction.

[0206] In a twenty-fifth aspect, procedure 1000 includes: transitioning an access link to an active mode at least in part based on receiving an access link wake-up signal.

[0207] In a twenty-sixth aspect, process 1000 includes: receiving a relay mode indication that specifies that a network node is deactivating the relay wake-up operation; and transitioning an access link to an active mode at least in part based on receiving the relay mode indication.

[0208] Although Figure 10 example boxes of process 1000 are shown, in some aspects, process 1000 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner compared to those depicted in Figure 10 . Additionally or alternatively, two or more boxes of process 1000 may be executed in parallel.

[0209] Figure 11 is a diagram of an example apparatus 1100 for wireless communication in accordance with the present disclosure. Apparatus 1100 may be a UE (e.g., UE 120), or a UE (e.g., UE 120) may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102 and a transmitting component 1104 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1100 may use receiving component 1102 and transmitting component 1104 to communicate with another apparatus 1106 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 1100 may include a communication manager 140. Communication manager 140 may include a relay wake-up signal manager component 1108 and so on.

[0210] In some aspects, apparatus 1100 may be configured to perform one or more operations described herein in connection with Figures 5 to 10 . Additionally or alternatively, apparatus 1100 may be configured to perform one or more processes described herein, such as Figure 8 process 800 of Figure 10 process 1000 of Figure 11 or a combination thereof. In some aspects, apparatus 1100 and / or Figure 2 one or more components shown may include one or more components of the UE described in connection with Figure 11 . Additionally or alternatively, Figure 2 one or more components shown may be implemented within one or more components described in connection with

[0211] The receiving component 1102 may receive communications from the device 1106, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1102 may provide the received communications to one or more other components of the device 1100. In some aspects, the receiving component 1102 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.), and may provide the processed signals to one or more other components of the device 1100. In some aspects, the receiving component 1102 may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the UE described in conjunction with Figure 2 the one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the UE described in conjunction with

[0212] The transmitting component 1104 may transmit communications to the device 1106, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 1100 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.), and may transmit the processed signals to the device 1106. In some aspects, the transmitting component 1104 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the UE described in conjunction with Figure 2 the one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the UE described in conjunction with

[0213] The relayed wake signal manager component 1108 may receive, via the receiving component 1102 using a first access link, a first indication of an access link wake signal associated with a second access link between a second UE and the network node from a network node. The relayed wake signal manager component 1108 may send, via the transmitting component 1104, a second indication of the access link wake signal to the second UE, at least in part based on using a sidelink between the first UE and the second UE.

[0214] The relayed wake signal manager component 1108 may receive, via the receiving component 1102 using the first access link, a wake identifier assigned to the second UE before receiving the access link wake signal from the network node.

[0215] The relay wake signal manager component 1108 may send an association indication to a network node via the sending component 1104 using a first access link, the association indication specifying that the first UE and the second UE are associated at least in part based on a sidelink. Alternatively or additionally, the relay wake signal manager component 1108 may send a permission indication to a network node via the sending component 1104 using a first access link, the permission indication specifying that the first UE agrees to become a relay UE.

[0216] The relay wake signal manager component 1108 may receive a relay mode indication via the receiving component 1102 before receiving a first indication of an access link wake signal, the relay mode indication specifying that the network node is activating a relay wake operation. Alternatively or additionally, the relay wake signal manager component 1108 may receive one or more UE identifiers associated with the relay wake operation via the receiving component 1102 together with the relay mode indication.

[0217] The relay wake signal manager component 1108 may send a disassociation indication to a network node via the sending component 1104 using a first access link, the disassociation indication specifying that the first UE and the second UE are disassociated. Alternatively or additionally, the relay wake signal manager component 1108 may receive a relay mode indication from the network node via the receiving component 1102 using a first access link, the relay mode indication specifying that the network node is deactivating the relay wake operation. The relay wake signal manager component 1108 may avoid relaying a second access link wake signal to the second UE at least in part based on receiving the relay mode indication associated with deactivating the relay wake operation.

[0218] In some aspects, such as in a scenario where the device is associated with a second UE, the relay wake signal manager component 1108 may receive an instruction to transition the access link to a deep sleep mode from the network node via the receiving component 1102 using the access link between the second UE and the network node. Alternatively or additionally, the relay wake signal manager component 1108 may receive an indication of an access link wake signal associated with the access link from the first UE via the receiving component 1102 using a sidelink between the first UE and the second UE.

[0219] Before receiving an instruction, the relayed wake signal manager component 1108 may send an association indication to a network node using an access link via the sending component 1104, the association indication specifying that a second UE and a first UE are associated at least in part based on a sidelink. In some aspects, before receiving an instruction, the relayed wake signal manager component 1108 may receive a wake identifier assigned to the second UE via the receiving component 1102. Alternatively or additionally, before receiving an instruction from the network node using the access link, the relayed wake signal manager component 1108 may receive a relay mode indication via the receiving component 1102, the relay mode indication specifying activation of a relayed wake operation.

[0220] The relayed wake signal manager component 1108 may use the access link to send a disassociation indication via the sending component 1104, the disassociation indication specifying that the first UE and the second UE are disassociated.

[0221] In some aspects, the relayed wake signal manager component 1108 may decode a wake identifier in an access link wake signal. Alternatively or additionally, the relayed wake signal manager component 1108 may identify that the wake identifier is associated with the second UE. In some aspects, the relayed wake signal manager component 1108 may transition to an active mode (e.g., the access link) at least in part based on identifying that the wake identifier is associated with the second UE. Alternatively or additionally, the relayed wake signal manager component 1108 may learn via decoding that a sidelink wake signal instructs to transition the access link to an active mode.

[0222] In some aspects, the relayed wake signal manager component 1108 may transition the access link to an active mode. Alternatively or additionally, the relayed wake signal manager component 1108 may transition the access link to a deep sleep mode at least in part based on receiving an instruction. As an example, the relayed wake signal manager component 1108 may transition the access link to an active mode at least in part based on receiving an access link wake signal.

[0223] The relayed wake signal manager component 1108 may receive a relay mode indication specifying that the network node is deactivating the relayed wake operation. Alternatively or additionally, the relayed wake signal manager component 1108 may transition the access link to an active mode at least in part based on receiving the relay mode indication.

[0224] Figure 11 The number and arrangement of the illustrated components are provided as an example. In fact, there may be additional components, fewer components, different components, or components arranged in a different manner compared to those illustrated. Additionally, Figure 11 compared to those illustrated, there may be additional components, fewer components, different components, or components arranged in a different manner. Further, Figure 11The two or more components shown may be implemented within a single component, or Figure 11 the single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 11 a set of components (one or more components) shown may perform one or more functions described as being performed by Figure 11 another set of components shown.

[0225] Figure 12 is a diagram of an example apparatus 1200 for wireless communication in accordance with the present disclosure. The apparatus 1200 may be a network node (e.g., network node 110), or a network node (e.g., network node 110) may include the apparatus 1200. In some aspects, the apparatus 1200 includes a receiving component 1202 and a transmitting component 1204 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1200 may communicate with another apparatus 1206 (such as a UE, a base station, or another wireless communication device) using the receiving component 1202 and the transmitting component 1204. As further shown, the apparatus 1200 may include a communication manager 150. The communication manager 150 may include a relayed wake signal manager component 1208 and so on.

[0226] In some aspects, the apparatus 1200 may be configured to perform one or more operations described herein in connection with Figures 5 to 10 . Additionally or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein (such as Figure 9 process 900) or a combination thereof. In some aspects, Figure 12 the apparatus 1200 and / or one or more components shown may include one or more components of the network node described in connection with Figure 2 . Additionally or alternatively, Figure 12 one or more components shown may be implemented within one or more components described in connection with Figure 2 . Additionally or alternatively, one or more components in a set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.

[0227] The receiving component 1202 may receive communications from the device 1206, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1202 may provide the received communications to one or more other components of the device 1200. In some aspects, the receiving component 1202 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.), and may provide the processed signals to one or more other components of the device 1200. In some aspects, the receiving component 1202 may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the network node described in conjunction with Figure 2 The described network node.

[0228] The transmitting component 1204 may transmit communications to the device 1206, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 1200 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the device 1206. In some aspects, the transmitting component 1204 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.), and may transmit the processed signals to the device 1206. In some aspects, the transmitting component 1204 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the network node described in conjunction with Figure 2 The described network node. In some aspects, the transmitting component 1204 may be co-located with the receiving component 1202 in a transceiver.

[0229] The transmitting component 1204 may use a second access link associated with a second UE to transmit an instruction for transitioning the second access link to a deep sleep mode. The transmitting component 1204 may use a first access link to transmit an indication of an access link wake-up signal associated with the second access link to the first UE associated with a sidelink between the first UE and the second UE.

[0230] The relayed wake-up signal manager component 1208 may receive an association indication through the receiving component 1202, the association indication specifying that the first UE and the second UE are associated at least in part based on a sidelink. Alternatively or additionally, the relayed wake-up signal manager component 1208 may receive a permission indication through the receiving component 1202 using the first access link, the permission indication specifying that the first UE agrees to become a relay UE. In some aspects, the relayed wake-up signal manager component 1208 may receive a disassociation indication through the receiving component 1202, the disassociation indication specifying that the first UE and the second UE are disassociated.

[0231] Before the relay wake-up signal manager component 1208 may send an access link wake-up signal via the sending component 1204 (e.g., to at least one of the first UE or the second UE), it may send a wake-up identifier assigned to the second UE. In some aspects, before the relay wake-up signal manager component 1208 may send an indication of the access link wake-up signal via the sending component 1204 (e.g., to at least one of the first UE or the second UE), it may send a relay mode indication that specifies activating the relay wake-up operation. Alternatively or additionally, the relay wake-up signal manager component 1208 may send a relay mode indication via the sending component 1204 that specifies deactivating the relay wake-up operation.

[0232] Figure 12 The number and arrangement of the illustrated components are provided as an example. In fact, there may be additional components, fewer components, different components, or components arranged in a different manner compared to Figure 12 those illustrated. Additionally, Figure 12 two or more of the illustrated components may be implemented within a single component, or Figure 12 a single illustrated component may be implemented as multiple distributed components. Additionally or alternatively, Figure 12 a set of the illustrated components (one or more components) may perform one or more functions described as being performed by Figure 12 another set of illustrated components.

[0233] An overview of some aspects of the present disclosure is provided below:

[0234] Aspect 1: A method of wireless communication performed by a device of a first user equipment (UE), the method comprising: receiving, via a first access link from a network node, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node; and sending, at least in part based on using a sidelink between the first UE and the second UE, a second indication of the access link wake-up signal to the second UE.

[0235] Aspect 2: The method according to aspect 1, the method further comprising: receiving, via the first access link, a wake-up identifier assigned to the second UE before receiving the access link wake-up signal from the network node.

[0236] Aspect 3: The method according to aspect 2, wherein the wake-up identifier includes a temporary identifier that obscures a network identity assigned to the second UE.

[0237] Aspect 4: The method according to aspect 3, wherein the network identity includes at least one of the following: International Mobile Subscriber Identity; or s-Temporary Mobile Subscriber Identity.

[0238] Aspect 5: The method according to any one of aspects 2 to 4, wherein the second indication designates the wake-up identifier.

[0239] Aspect 6: The method according to any one of aspects 2 to 5, wherein the wake-up identifier is at least partially based on a mapping between an access link UE identifier and a sidelink identifier, and the method further includes: decoding the wake-up identifier to obtain the sidelink identifier, and wherein sending the second indication of the access link wake-up signal to the second UE includes: sending the second indication of the access link wake-up signal to the second UE at least partially based on using the sidelink identifier.

[0240] Aspect 7: The method according to aspect 6, wherein the sidelink identifier is: a Layer 1 sidelink identifier; a Layer 2 sidelink identifier; or a Layer 3 sidelink identifier.

[0241] Aspect 8: The method according to any one of aspects 1 to 7, wherein the second indication of the access link wake-up signal includes a sidelink wake-up signal, the sidelink wake-up signal including an explicit indication that the sidelink wake-up signal is associated with the second access link between the second UE and the network node.

[0242] Aspect 9: The method according to aspect 8, wherein the explicit indication includes a bit in a bit field, the bit being set to a value indicating that the sidelink wake-up signal is associated with the second access link.

[0243] Aspect 10: The method according to any one of aspects 1 to 9, the method further includes: sending an association indication to the network node using the first access link, the association indication designating that the first UE and the second UE are associated at least partially based on the sidelink.

[0244] Aspect 11: The method according to any one of aspects 1 to 10, the method further includes: sending a permission indication to the network node using the first access link, the permission indication designating that the first UE agrees to become a relay UE.

[0245] Aspect 12: The method according to any one of aspects 1 to 11, the method further includes: receiving a relay mode indication before receiving the first indication of the access link wake-up signal, the relay mode indication designating that the network node is activating a relayed wake-up operation.

[0246] Aspect 13: The method according to aspect 12, the method further comprising: receiving, together with the relay mode indication, one or more UE identifiers associated with the relayed wake-up operation.

[0247] Aspect 14: The method according to aspect 13, wherein the one or more UE identifiers include at least one of the following: a sidelink identifier; or a wake-up identifier.

[0248] Aspect 15: The method according to any one of aspects 1 to 14, wherein the first indication of the access link wake-up signal specifies a transition from an access link sleep mode to an access link active mode.

[0249] Aspect 16: The method according to any one of aspects 1 to 15, the method further comprising: sending, using the first access link, a disassociation indication to the network node, the disassociation indication specifying that the first UE and the second UE are disassociated.

[0250] Aspect 17: The method according to aspect 16, wherein sending the disassociation indication includes: sending a wake-up identifier assigned to the second UE.

[0251] Aspect 18: The method according to aspect 17, wherein the wake-up identifier includes: a temporary identifier assigned by the network node, the temporary identifier obscuring the network identity assigned to the second UE; or a sidelink identifier.

[0252] Aspect 19: The method according to any one of aspects 1 to 18, the method further comprising: receiving, using the first access link, a relay mode indication from the network node, the relay mode indication specifying that the network node is deactivating the relayed wake-up operation.

[0253] Aspect 20: The method according to aspect 19, the method further comprising: at least partially based on receiving the relay mode indication associated with deactivating the relayed wake-up operation, avoiding relaying a second access link wake-up signal to the second UE.

[0254] Aspect 21: A method of wireless communication performed by an apparatus of a network node, the method comprising: sending, using a second access link associated with a second user equipment (UE), an instruction to transition the second access link to a deep sleep mode; and sending, using a first access link, an indication of an access link wake-up signal associated with the second access link to the first UE associated with a sidelink between the first UE and the second UE.

[0255] Aspect 22: The method according to aspect 21, the method further comprising: receiving an association indication that specifies that the first UE and the second UE are associated at least in part based on the sidelink.

[0256] Aspect 23: The method according to aspect 22, wherein receiving the association indication further comprises: receiving the association indication from the first UE or the second UE.

[0257] Aspect 24: The method according to any one of aspects 21 to 23, wherein the instruction for transitioning the second access link to the deep sleep mode indicates to retain the sidelink between the first UE and the second UE.

[0258] Aspect 25: The method according to any one of aspects 21 to 24, the method further comprising: before sending the access link wake-up signal to at least one of the first UE or the second UE, sending a wake-up identifier assigned to the second UE; wherein the indication of the access link wake-up signal associated with the second UE includes the wake-up identifier assigned to the second UE. Wherein the indication of the access link wake-up signal associated with the second UE includes the wake-up identifier assigned to the second UE.

[0259] Aspect 26: The method according to aspect 25, wherein the wake-up identifier includes a temporary identifier that obscures the network identity assigned to the second UE.

[0260] Aspect 27: The method according to aspect 26, wherein the network identity includes at least one of the following: international mobile subscriber identity; or s-temporary mobile subscriber identity.

[0261] Aspect 28: The method according to any one of aspects 25 to 27, wherein the wake-up identifier is at least in part based on a mapping between an access link UE identifier and a sidelink identifier.

[0262] Aspect 29: The method according to aspect 28, wherein the sidelink identifier is: a layer 1 sidelink identifier; a layer 2 sidelink identifier; or a layer 3 sidelink identifier.

[0263] Aspect 30: The method according to any one of aspects 21 to 29, the method further comprising: using the first access link to receive a permission indication that specifies that the first UE agrees to become a relay UE.

[0264] Aspect 31: The method according to any one of Aspects 21 to 30, the method further comprising: before sending the indication of the access link wake-up signal to at least one of the first UE or the second UE, sending a relay mode indication that specifies activation of a relayed wake-up operation.

[0265] Aspect 32: The method according to Aspect 31, wherein the relay mode indication specifies one or more UE identifiers associated with activation of the relayed wake-up operation.

[0266] Aspect 33: The method according to Aspect 32, wherein the one or more UE identifiers include at least one of the following: a sidelink identifier; or a wake-up identifier.

[0267] Aspect 34: The method according to any one of Aspects 31 to 33, wherein sending the relay mode indication includes: sending the relay mode indication to the second UE, wherein the relay mode indication specifies a sidelink identifier associated with the first UE.

[0268] Aspect 35: The method according to any one of Aspects 21 to 34, wherein sending the instruction for transitioning the second access link to the deep sleep mode includes: sending the instruction at least in part based on including the instruction in at least one of the following: a radio resource control message; a medium access control (MAC) control element (CE); or downlink control information.

[0269] Aspect 36: The method according to any one of Aspects 21 to 35, wherein the instruction for transitioning the second access link to the deep sleep mode is associated with an access link discontinuous reception (DRX) period that is independent of a sidelink DRX period associated with the second UE.

[0270] Aspect 37: The method according to Aspect 36, wherein the access link DRX period is longer than the sidelink DRX period.

[0271] Aspect 38: The method according to any one of Aspects 21 to 37, wherein the indication of the access link wake-up signal specifies a transition from an access link sleep mode to an access link active mode.

[0272] Aspect 39: The method according to any one of Aspects 21 to 38, the method further comprising: receiving a disassociation indication that specifies that the first UE and the second UE are disassociated.

[0273] Aspect 40: The method according to aspect 39, wherein receiving the disassociation indication includes: receiving the disassociation indication from the first UE using the first access link, wherein the disassociation indication specifies a wake-up identifier assigned to the second UE.

[0274] Aspect 41: The method according to aspect 40, wherein the wake-up identifier includes: a temporary identifier assigned by the network node, the temporary identifier obscuring the network identity assigned to the second UE; or a sidelink identifier associated with the second UE.

[0275] Aspect 42: The method according to any one of aspects 39 to 41, wherein receiving the disassociation indication includes: receiving the disassociation indication from the second UE using the second access link based at least in part on at least one of the following: random access channel transmission, or grant-free transmission.

[0276] Aspect 43: The method according to aspect 42, wherein receiving the disassociation indication includes: receiving the disassociation indication based at least in part on the random access channel transmission, wherein the random access channel transmission indicates a reason for the second UE to disassociate from the first UE.

[0277] Aspect 44: The method according to any one of aspects 21 to 43, the method further includes: sending a relay mode indication, the relay mode indication specifying deactivation of the relayed wake-up operation.

[0278] Aspect 45: The method according to aspect 44, wherein the sending includes at least one of the following: sending the relay mode indication to the first UE using the first access link; or sending the relay mode indication to the second UE using the second access link.

[0279] Aspect 46: A method of wireless communication performed by a device of a second user equipment (UE), the method includes: receiving, from a network node, an instruction to transition the access link to a deep sleep mode using an access link between the second UE and the network node; and receiving, from the first UE, an indication of an access link wake-up signal associated with the access link using a sidelink between the first UE and the second UE.

[0280] Aspect 47: The method according to aspect 46, the method further includes: before receiving the instruction, sending an association indication to the network node using the access link, the association indication specifying that the second UE and the first UE are associated at least in part based on the sidelink.

[0281] Aspect 48: The method according to aspect 46 or aspect 47, wherein the instruction for transitioning the access link to the deep sleep mode indicates to retain the sidelink with the first UE.

[0282] Aspect 49: The method according to any one of aspects 46 to 48, the method further comprising: receiving a wake-up identifier assigned to the second UE before receiving the instruction.

[0283] Aspect 50: The method according to aspect 49, wherein the wake-up identifier includes a temporary identifier that obscures the network identity assigned to the second UE.

[0284] Aspect 51: The method according to aspect 50, wherein the network identity includes at least one of the following: international mobile subscriber identity; or s-temporary mobile subscriber identity.

[0285] Aspect 52: The method according to any one of aspects 49 to 51, wherein the wake-up identifier is at least partially based on a mapping between an access link UE identifier and a sidelink identifier.

[0286] Aspect 53: The method according to aspect 52, wherein the sidelink identifier is: a layer 1 sidelink identifier; a layer 2 sidelink identifier; or a layer 3 sidelink identifier.

[0287] Aspect 54: The method according to any one of aspects 46 to 53, the method further comprising: receiving, before receiving the instruction, a relay mode indication from the network node using the access link, the relay mode indication specifying activation of a relayed wake-up operation.

[0288] Aspect 55: The method according to aspect 54, wherein the relay mode indication specifies one or more UE identifiers associated with activation of the relayed wake-up operation.

[0289] Aspect 56: The method according to aspect 55, wherein the one or more UE identifiers include at least one of the following: a sidelink identifier; or a wake-up identifier.

[0290] Aspect 57: The method according to aspect 55 or aspect 56, wherein the one or more UE identifiers include a sidelink identifier associated with the first UE.

[0291] Aspect 58: The method according to any one of aspects 46 to 57, wherein receiving the instruction for transitioning the access link to the deep sleep mode includes: receiving the instruction based at least in part on including the instruction in at least one of the following: a radio resource control message; a media access control (MAC) control element (CE); or downlink control information.

[0292] Aspect 59: The method according to any one of aspects 46 to 58, wherein the instruction for transitioning the access link is associated with an access link discontinuous reception (DRX) period, and the access link discontinuous reception (DRX) period is independent of a sidelink DRX period associated with the second UE.

[0293] Aspect 60: The method according to aspect 59, wherein the access link DRX period is longer than the sidelink DRX period.

[0294] Aspect 61: The method according to any one of aspects 46 to 60, wherein the indication of the access link wake-up signal specifies a transition from an access link sleep mode to an access link active mode.

[0295] Aspect 62: The method according to any one of aspects 46 to 61, the method further includes: using the access link to send a disassociation indication, the disassociation indication specifying that the first UE and the second UE are disassociated.

[0296] Aspect 63: The method according to aspect 62, wherein sending the disassociation indication includes: sending the disassociation indication based at least in part on at least one of the following: a random access channel transmission, or a grant-free transmission.

[0297] Aspect 64: The method according to aspect 63, wherein sending the disassociation indication includes: sending the disassociation indication based at least in part on the random access channel transmission, wherein the random access channel transmission indicates a reason for the second UE to be disassociated from the first UE.

[0298] Aspect 65: The method according to any one of aspects 46 to 64, wherein the indication of the access link wake-up signal specifies a wake-up identifier associated with the second UE.

[0299] Aspect 66: The method according to aspect 65, the method further includes: decoding the wake-up identifier in the access link wake-up signal; identifying that the wake-up identifier is associated with the second UE; and transitioning to an active mode based at least in part on identifying that the wake-up identifier is associated with the second UE.

[0300] Aspect 67: The method according to any one of aspects 46 to 66, wherein the indication of the access link wake-up signal includes a sidelink wake-up signal, and the sidelink wake-up signal includes an explicit indication that the sidelink wake-up signal is associated with the access link between the second UE and the network node.

[0301] Aspect 68: The method according to aspect 67, wherein the explicit indication includes a bit in a bit field, and the bit is set to a value indicating that the sidelink wake-up signal is associated with the access link between the second UE and the network node.

[0302] Aspect 69: The method according to aspect 68, the method further comprising: decoding to know that the sidelink wake-up signal indicates transitioning the access link to an active mode; and transitioning the access link to the active mode.

[0303] Aspect 70: The method according to any one of aspects 46 to 69, the method further comprising: transitioning the access link to the deep sleep mode at least in part based on receiving the instruction.

[0304] Aspect 71: The method according to any one of aspects 46 to 70, the method further comprising: transitioning the access link to an active mode at least in part based on receiving the access link wake-up signal.

[0305] Aspect 72: The method according to any one of aspects 46 to 72, the method further comprising: receiving a relay mode indication that specifies that the network node is deactivating the relayed wake-up operation; and transitioning the access link to an active mode at least in part based on receiving the relay mode indication.

[0306] Aspect 73: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 1 to 20.

[0307] Aspect 74: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 21 to 45.

[0308] Aspect 75: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 46 to 72.

[0309] Aspect 76: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 20.

[0310] Aspect 77: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 21 to 45.

[0311] Aspect 78: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 46 to 72.

[0312] Aspect 79: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 20.

[0313] Aspect 80: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 21 to 45.

[0314] Aspect 81: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 46 to 72.

[0315] Aspect 82: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 20.

[0316] Aspect 83: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 21 to 45.

[0317] Aspect 84: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the method according to one or more of Aspects 46 to 72.

[0318] Aspect 85: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of Aspects 1 to 20.

[0319] Aspect 86: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of Aspects 21 to 45.

[0320] Aspect 87: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of Aspects 46 to 72.

[0321] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure, or may be obtained from practice of the aspects.

[0322] As used herein, the term "component" is intended to be broadly construed as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, "software" shall be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, and / or functions, etc. As used herein, a "processor" is implemented by a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein may be implemented by different forms of hardware and / or hardware and software combinations. The actual specific control hardware or software code for implementing these systems and / or methods does not limit the aspects. Accordingly, the operation and behavior of the systems and / or methods are not described herein with reference to specific software code, as those skilled in the art will understand that the software and hardware can be designed at least in part based on the description herein to implement the systems and / or methods.

[0323] As used herein, depending on the context, "meeting a threshold" can mean that a value is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc.

[0324] Although specific combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features can be combined in ways that are not specifically recited in the claims and / or not disclosed in the specification. The disclosure of each aspect includes each dependent claim in combination with every other claim in the set of claims. As used herein, the phrase referring to "at least one" of a list of items refers to any combination of those items (which includes a single member). By way of example, "at least one of a, b, or c" is intended to cover a, b, c, a + b, a + c, b + c, and a + b + c, as well as any combination of multiple of the same element (e.g., a + a, a + a + a, a + a + b, a + a + c, a + b + b, a + c + c, b + b, b + b + b, b + b + c, c + c, and c + c + c, or any other ordering of a, b, and c).

[0325] No element, act, or instruction used herein should be construed as critical or essential unless explicitly stated as such. Additionally, as used herein, the article "a" is intended to include one or more items and can be used interchangeably with "one or more." Additionally, as used herein, the article "the" is intended to include the one or more items mentioned in connection with the article "the" and can be used interchangeably with "the one or more." Additionally, as used herein, the terms "set" and "group" are intended to include one or more items and can be used interchangeably with "one or more." If only one item is intended to be referred to, the phrase "only one" or similar language will be used. Additionally, as used herein, the terms "has," "owns," "possesses," etc. are intended to be open-ended terms that do not limit the elements they modify (e.g., an element that "has" A may also have B). Additionally, the phrase "based on" is intended to mean "at least partially based on" unless otherwise explicitly stated. Additionally, as used herein, the term "or" when used in a series is intended to be open-ended and can be used interchangeably with "and / or" unless otherwise explicitly stated (e.g., if used in conjunction with "either" or "only one").

Claims

1. An apparatus for wireless communication at a first user equipment (UE), the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receive, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and a network node; and send, at least in part based on using a sidelink between the first UE and the second UE, a second indication of the access link wake-up signal to the second UE.

2. The apparatus according to claim 1, wherein the memory comprises instructions executable by the processor to cause the apparatus to: receive, using the first access link, a wake-up identifier assigned to the second UE before receiving the access link wake-up signal from the network node.

3. The apparatus according to claim 2, wherein the memory comprises instructions executable by the processor to cause the apparatus to: decode the wake-up identifier to obtain a sidelink identifier, and wherein the instructions for sending the second indication of the access link wake-up signal to the second UE are executable by the processor to cause the apparatus to: send, at least in part based on using the sidelink identifier, the second indication of the access link wake-up signal to the second UE.

4. The apparatus according to claim 1, wherein the second indication of the access link wake-up signal comprises a sidelink wake-up signal, the sidelink wake-up signal comprising an explicit indication that the sidelink wake-up signal is associated with the second access link between the second UE and the network node.

5. The apparatus according to claim 1, wherein the memory comprises instructions executable by the processor to cause the apparatus to: send, using the first access link, an association indication to the network node, the association indication specifying that the first UE and the second UE are associated at least in part based on the sidelink.

6. The apparatus according to claim 1, wherein the memory comprises instructions executable by the processor to cause the apparatus to: send, using the first access link, a permission indication to the network node, the permission indication specifying that the first UE agrees to be a relay UE.

7. The apparatus according to claim 1, wherein the memory comprises instructions executable by the processor to cause the apparatus to: receive, before receiving the first indication of the access link wake-up signal, a relay mode indication specifying that the network node is activating a relayed wake-up operation.

8. The apparatus according to claim 1, wherein the memory comprises instructions executable by the processor to cause the apparatus to: send, using the first access link, a disassociation indication to the network node, the disassociation indication specifying that the first UE and the second UE are disassociated.

9. The apparatus according to claim 1, wherein the memory includes instructions that can be executed by the processor to cause the apparatus to: Receive a relay mode indication from the network node using the first access link, the relay mode indication specifying that the network node is deactivating the relayed wake-up operation.

10. An apparatus for wireless communication at a network node, the apparatus comprising: A processor; A memory coupled to the processor; And Instructions stored in the memory and executable by the processor to cause the apparatus to: Send an instruction to transition the second access link to a deep sleep mode using a second access link associated with a second user equipment (UE); and Send an indication of an access link wake-up signal associated with the second access link to the first UE associated with a sidelink between the first UE and the second UE using a first access link.

11. The apparatus according to claim 10, wherein the memory includes instructions that can be executed by the processor to cause the apparatus to: Receive an association indication specifying that the first UE and the second UE are associated at least in part based on the sidelink.

12. The apparatus according to claim 10, wherein the memory includes instructions that can be executed by the processor to cause the apparatus to: Send a wake-up identifier assigned to the second UE before sending the access link wake-up signal to at least one of the first UE or the second UE; Wherein the indication of the access link wake-up signal associated with the second UE includes the wake-up identifier assigned to the second UE.

13. The apparatus according to claim 10, wherein the memory includes instructions that can be executed by the processor to cause the apparatus to: Receive a permission indication using the first access link, the permission indication specifying that the first UE agrees to become a relay UE.

14. The apparatus according to claim 10, wherein the memory includes instructions that can be executed by the processor to cause the apparatus to: Send a relay mode indication specifying activation of the relayed wake-up operation before sending the indication of the access link wake-up signal to at least one of the first UE or the second UE.

15. The apparatus according to claim 10, wherein the instruction to transition the second access link to the deep sleep mode is associated with an access link discontinuous reception (DRX) period that is independent of a sidelink DRX period associated with the second UE.

16. The apparatus according to claim 10, wherein the memory includes instructions that can be executed by the processor to cause the apparatus to: Receive a disassociation indication specifying that the first UE and the second UE are disassociated.

17. The apparatus according to claim 16, wherein the memory includes instructions executable by the processor to cause the apparatus to: Receive the disassociation indication from the second UE using the second access link based at least in part on at least one of the following: Random access channel transmission, or Grant-free transmission.

18. An apparatus for wireless communication at a second user equipment (UE), the apparatus comprising: A processor; A memory coupled to the processor; And Instructions stored in the memory and executable by the processor to cause the apparatus to: Receive, using an access link between the second UE and a network node, an instruction to transition the access link to a deep sleep mode from the network node; And Receive an indication of an access link wake-up signal associated with the access link from a first UE using a sidelink between the first UE and the second UE.

19. The apparatus according to claim 18, wherein the memory includes instructions executable by the processor to cause the apparatus to: Before receiving the instruction, send an association indication to the network node using the access link, the association indication specifying that the second UE and the first UE are associated at least in part based on the sidelink.

20. The apparatus according to claim 18, wherein the memory includes instructions executable by the processor to cause the apparatus to: Before receiving the instruction, receive a wake-up identifier assigned to the second UE.

21. The apparatus according to claim 18, wherein the memory includes instructions executable by the processor to cause the apparatus to: Before receiving the instruction, receive a relay mode indication from the network node using the access link, the relay mode indication specifying activation of a relayed wake-up operation.

22. The apparatus according to claim 18, wherein the instruction for transitioning the access link is associated with an access link discontinuous reception (DRX) period that is independent of a sidelink DRX period associated with the second UE.

23. The apparatus according to claim 18, wherein the indication of the access link wake-up signal includes a sidelink wake-up signal that includes an explicit indication that the sidelink wake-up signal is associated with the access link between the second UE and the network node.

24. The apparatus according to claim 23, wherein the explicit indication includes a bit in a bit field that is set to a value indicating that the sidelink wake-up signal is associated with the access link between the second UE and the network node.

25. A method of wireless communication performed by an apparatus of a first user equipment (UE), the method comprising: Receiving, using a first access link, a first indication of an access link wake-up signal associated with a second access link between a second UE and the network node from a network node; And Send a second indication of the access link wake-up signal to the second UE, at least partially based on using a sidelink between the first UE and the second UE.

26. The method according to claim 25, wherein the second indication of the access link wake-up signal comprises a sidelink wake-up signal, the sidelink wake-up signal comprising an explicit indication that the sidelink wake-up signal is associated with the second access link between the second UE and the network node.

27. The method according to claim 25, the method further comprising: Sending an association indication to the network node using the first access link, the association indication specifying that the first UE and the second UE are associated at least partially based on the sidelink.

28. The method according to claim 25, the method further comprising: Sending a permission indication to the network node using the first access link, the permission indication specifying that the first UE agrees to become a relay UE.

29. The method according to claim 25, the method further comprising: Receiving a relay mode indication from the network node using the first access link, the relay mode indication specifying that the network node is deactivating the relayed wake-up operation.

30. The method according to claim 29, the method further comprising: Avoid relaying a second access link wake-up signal to the second UE, at least partially based on receiving the relay mode indication associated with deactivating the relayed wake-up operation.

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