Techniques for prioritization for sidelink synchronization signal blocks

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a configuration associated with transmitting a sidelink synchronization signal block (S-SSB), where the configuration indicates a first S-SSB occasion and a second set of S-SSB occasions, and where the second set of S-SSB occasions is included in a sidelink resource pool of the UE. The UE may receive priority information indicating one or more transmission priorities for the second set of S-SSB occasions. The UE may perform communications associated with the second set of S-SSB occasions according to the priority information. Numerous other aspects are described.

Description

TECHNICAL FIELD

[0001] Aspects of the disclosure relate generally to wireless communication, and to techniques and apparatuses for prioritization for sidelink synchronization signal blocks. BACKGROUND

[0002] Wireless communications systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems can employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3 GPP).

[0003] A wireless network can include one or more network nodes that support communication for wireless communication devices such as a user equipment (UE) or multiple UEs. A UE can communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL”) refers to

[0004] These multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate on a municipal, national, regional, and even global level. New Radio (NR), which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink, CP-OFDM or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, and support beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation. SUMMARY

[0005] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method can include receiving a configuration associated with transmitting a sidelink synchronization signal block (S-SSB), where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE. The method can include receiving priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The method can include performing communications associated with the set of second S-SSB occasions in accordance with the priority information.

[0006] Some aspects described herein relate to a UE for wireless communication. The UE can include one or more memories and one or more processors coupled to the one or more memories. The one or more processors can be configured to receive a configuration associated with transmitting a S-SSB, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE. The one or more processors can be configured to receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The one or more processors can be configured to perform communications associated with the set of second S-SSB occasions in accordance with the priority information.

[0007] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, can cause the UE to receive a configuration associated with transmitting a S-SSB, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE. The set of instructions, when executed by the one or more processors of the UE, can cause the UE to receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The set of instructions, when executed by the one or more processors of the UE, can cause the UE to perform communications associated with the set of second S-SSB occasions in accordance with the priority information.

[0008] Some aspects described herein relate to an apparatus for wireless communication. The apparatus can include means for receiving a configuration associated with transmitting S-SSBs, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the apparatus. The apparatus can include means for receiving priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The apparatus can include means for performing communications associated with the set of second S-SSB occasions in accordance with the priority information.

[0009] Aspects generally include methods, apparatus, 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 substantially described herein with reference to and as illustrated by the accompanying drawings.

[0010] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for modifying or designing other for carrying the same purposes thereof. Such equivalent constructions not only follow from the scope of the appended claims, but are intended to be falling within the scope thereof. The properties of the concepts disclosed herein, both to their organization and method of operation, can be better understood from the following description with reference to the accompanying drawings, when considered in connection with the description. Each of the figures in the drawings is provided for illustrative and descriptive purposes, and is not to be taken as a limitation on the definition of the claims. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order that the foregoing aspects of the present disclosure can be understood in detail, a more particular description will be rendered by reference to various aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings are intended solely for purposes of illustration and description and are not intended to limit the scope of the disclosure, as the description can accommodate embodiments having different shapes, structures, and arrangements. Like reference numerals can designate like elements throughout the specification.

[0012] Figure 1 is a diagram illustrating an example of a wireless network.

[0013] Figure 2 is a diagram illustrating an example of a network node in communication with a user equipment (UE) in a wireless network.

[0014] Figure 3 is a diagram illustrating an example of a disaggregated base station architecture according to examples of the present disclosure.

[0015] Figure 4 is a diagram illustrating an example of sidelink communications according to the present disclosure.

[0016] Figure 5 is a diagram illustrating an example of sidelink and access link communications in accordance with the present disclosure.

[0017] Figures 6 to 8 is a diagram illustrating an example of signaling associated with prioritization for sidelink synchronization signal blocks in accordance with the present disclosure.

[0018] Figure 9 is a diagram illustrating an example of prioritization of sidelink synchronization signal blocks according to synchronization priority in accordance with the present disclosure.

[0019] Figure 10 is a diagram illustrating an example process performed, for example, by a UE, in accordance with the present disclosure.

[0020] Figure 11 is a diagram of an example apparatus for wireless communication in accordance with the present disclosure. DETAILED DESCRIPTION

[0021] Sidelink communications involve communications between multiple user equipments (UEs) without such communications being made via an intermediary, such as a base station. In some aspects, a first UE can transmit a sidelink synchronization signal block (SSB). The sidelink SSB can be used to synchronize with the first UE. In some examples, the first UE can act as a synchronization reference for a second UE, meaning that the second UE can synchronize according to a time reference and / or a frequency reference derived from the sidelink SSB transmitted by the first UE. The sidelink SSB can be periodically transmitted within a sidelink bandwidth part on a resource (e.g., a slot) that is not part of a sidelink resource pool. The location of the sidelink SSB, referred to as an S-SSB occasion, can be configured (e.g., preconfigured) within the sidelink bandwidth part. The first UE can also be associated with one or more additional candidate S-SSB occasions, referred to herein as second S-SSB occasions. The second S-SSB occasions are resources on which an S-SSB can or can not be transmitted. For example, the second S-SSB occasions can provide additional occasions for S-SSB transmission, which can allow for prioritization of traffic and recovery from failures to obtain channel access for S-SSB transmission. In some aspects, the one or more second S-SSB occasions are excluded from a sidelink resource pool of the first UE. In some other aspects, one or more S-SSB occasions are included in the sidelink resource pool of the first UE (e.g., belong to the sidelink resource pool).

[0022] In some examples, a UE can communicate in an unlicensed spectrum. Unlicensed spectrum generally involves a decentralized channel access mechanism, such as a listen-before-talk (LBT) mechanism, to access a channel (e.g., a resource on the channel) and communicate with other UEs. The length of time that a UE has access to the channel can be referred to as a channel occupancy time (COT). The UE can be allowed to transmit communications during the COT, and in some examples, can share the COT with other wireless communication devices. One example of a radio access technology for communicating in an unlicensed spectrum is New Radio Unlicensed (NR-U).

[0023] In some deployments, if a COT is interrupted for a threshold length of time (e.g., if the UE does not transmit any communications in the COT for the threshold length of time), the COT of the UE can end and other UEs can gain access to the channel. The UE can transmit communications on the UE’s sidelink resource pool during the COT. Thus, it can be beneficial to include a second S-SSB occasion in the sidelink resource pool, such that a second S-SSB transmission on the second S-SSB occasion can help maintain access to the COT of the UE. However, the sidelink resource pool of the UE can also be used for other transmissions or receptions, such as physical sidelink control channel (PSCCH) transmissions or receptions or physical sidelink shared channel (PSSCH) transmissions or receptions. Without a rule that prioritizes the second S-SSB occasion for S-SSB transmissions over other communications that overlap with the second S-SSB occasion, sidelink synchronization can be negatively impacted and throughput can decrease. Furthermore, in some examples, a second S-SSB transmission of one UE can overlap with an S-SSB transmission of another UE. Without a rule for prioritizing transmissions and receptions of S-SSBs when a second S-SSB transmission overlaps with a reception of another S-SSB, the UEs can not be able to efficiently synchronize on the sidelink, which can be particularly impactful when out of radio access network coverage.

[0024] Various aspects generally relate to prioritization of sidelink communications. Some aspects more specifically relate to prioritization between a second S-SSB occasion in a sidelink resource pool and other communications. In some examples, a UE can receive a configuration indicating a first S-SSB occasion and a set of second S-SSB occasions (e.g., additional candidate S-SSB occasions). The UE can also receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The UE can perform a communication associated with the set of second S-SSB occasions (which can include a transmission of an S-SSB on a second S-SSB occasion or a transmission or reception of another communication) in accordance with the priority information. In some examples, the UE can transmit an S-SSB on a second S-SSB occasion based at least in part on comparing a priority value of a received S-SSB to a transmission priority of the S-SSB on the second S-SSB occasion. For example, a transmission priority associated with the received S-SSB can be based at least in part on a synchronization priority of the received S-SSB. As such, efficiency of sidelink synchronization is improved, especially when out of radio access network coverage.

[0025] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by performing a communication associated with a set of second S-SSB occasions (which can include a transmission of an S-SSB on a second S-SSB occasion or a transmission or reception of another communication) in accordance with priority information, the described techniques can be used to improve sidelink synchronization and increase throughput. By transmitting an S-SSB on a second S-SSB occasion based at least in part on comparing a priority value of a received S-SSB to a transmission priority of the S-SSB on the second S-SSB occasion, efficiency of sidelink synchronization is improved, especially when out of radio access network coverage.

[0026] Various aspects of the disclosure are described more fully below with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. One skilled in the art will appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It will be understood that any aspect of the disclosure disclosed herein can be implemented by one or more elements of a claim.

[0027] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms, among other examples (collectively referred to as “elements”). These elements can be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0028] While aspects can be described herein using terminology commonly associated with a 5G or New Radio (NR) radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and / or a RAT subsequent to 5G (e.g., 6G).

[0029] Figure 1is a diagram illustrating an example of the wireless network 100. The wireless network 100 can be or include elements of a 5G (e.g., NR) network or a 4G (e.g., Long Term Evolution (LTE)) network, or the like, among others. The wireless network 100 can include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), one UE 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network nodes 110 are examples of network nodes that communicate with the UEs 120. As illustrated, the network nodes 110 can include one or more network nodes. For example, the network nodes 110 can be an aggregated network node, meaning that the aggregated network node is 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). As another example, the network nodes 110 can be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning that the network nodes 110 are configured to utilize a protocol stack that is physically or logically distributed among 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).

[0030] In some examples, the network nodes 110 are or include network nodes that communicate with the UEs 120 via radio access links, such as RUs. In some examples, the network nodes 110 are or include network nodes that communicate with other network nodes 110 via a front-haul link or a mid-haul link, such as DUs. In some examples, the network nodes 110 are or include network nodes that communicate with other network nodes 110 via a mid-haul link or with a core network via a backhaul link, such as CUs. In some examples, the network nodes 110 (such as aggregated network nodes 110 or disaggregated network nodes 110) can include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, the network nodes 110 can comprise an NR base station, an LTE base station, a NodeB, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmission reception point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, network equipment, a RAN node, or a combination thereof. In some examples, the network nodes 110 can interconnect with each other or to one or more other network nodes 110 in the wireless network 100 using any suitable transport network, such as a direct physical connection, an air interface, or a virtual network. The transport network can further comprise one or more transport nodes.

[0031] In some examples, a network node 110 can provide communication coverage for a particular geographic area. In Third Generation Partnership Project (3GPP), the term "cell" can refer to a coverage area of a network node 110 or a network node subsystem serving the coverage area, depending on the context in which the term is used. A network node 110 can be a macro cell, a pico cell, a femto cell, or another type of cell. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UEs 120 with service subscriptions. A pico cell can cover a relatively small geographic area (e.g., a residence) and can allow unrestricted access by UEs 120 with service subscriptions. A femto cell can cover a relatively small geographic area (e.g., a residence) and can allow restricted access by UEs 120, such as UEs 120 in an closed subscriber group (CSG). A network node 110 for a macro cell can be referred to as a macro network node. A network node 110 for a pico cell can be referred to as a pico network node. A network node 110 for a femto cell can be referred to as a femto network node or a home network node. In Figure 1 In the illustrated example, network node 110a can be a macro network node for a macro cell 102a, network node 110b can be a pico network node for a pico cell 102b, and network node 110c can be a femto network node for a femto cell 102c. A network node can support one or more (e.g., three) cells. In some examples, cells can not necessarily be stationary, and the geographic area of the cells can move according to the location of a mobile network node 110 (e.g., a mobile network node).

[0032] In some aspects, the term “base station” or “network node” can 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, a “base station” or “network node” can refer to a CU, a DU, a RU, a near real-time (near-RT) RAN intelligent controller (RIC), or a non-RT RIC, or a combination thereof. In some aspects, the term “base station” or “network node” can refer to one 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” can refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which can be located in the same geographic location or different geographic locations) can be configured to perform at least a portion of a function, or to repeat at least a portion of the function, and the term “base station” or “network node” can refer to any one or more of these different devices. In some aspects, the term “base station” or “network node” can 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 can be instantiated on a single device. In some aspects, the term “base station” or “network node” can refer to one of a base station function, but not another base station function. In this way, a single device can include more than one base station.

[0033] Wireless network 100 can include one or more relay stations. A relay station is a network node that receives a transmission of data from an upstream node (e.g., a network node 110 or a UE 120) and sends a transmission of the data to a downstream node (e.g., a UE 120 or a network node 110). A relay station can be a UE 120 that can relay transmissions for other UEs 120. In Figure 1 In the illustrated example, network node 110d (e.g., a relay network node) can communicate with network node 110a (e.g., a macro network node) and UE 120d in order to facilitate communication between network node 110a and UE 120d. A network node 110 that relays communications can be referred to as a relay station, a relay base station, a relay network node, a relay node, or a repeater, among other examples.

[0034] Wireless network 100 can be a heterogeneous network that includes network nodes 110 of different types, such as macro network nodes, pico network nodes, femto network nodes, or relay network nodes. These different types of network nodes 110 can have different transmit power levels, different coverage areas, or different impacts on interference in wireless network 100. For example, macro network nodes can have a high transmit power level (e.g., 5 to 40 watts), while pico network nodes, femto network nodes, and relay network nodes can have a lower transmit power level (e.g., 0.1 to 2 watts).

[0035] A network controller 130 can couple to or communicate with a set of network nodes 110 and can provide coordination and control for the network nodes 110. The network controller 130 can communicate with the network nodes 110 via a backhaul communication link or a metro communication link. The network nodes 110 can also communicate with one another directly via wireless backhaul communication links or indirect via wired backhaul communication links. 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.

[0036] The UEs 120 can be dispersed throughout the wireless network 100, and each UE 120 can be stationary or mobile. A UE 120 can include, for example, an access terminal, a terminal, a mobile station or a subscriber unit. 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, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, or a satellite radio), a vehicular component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, a UE function of a network node, or any other suitable device that is configured to communicate via a wireless or wired medium.

[0037] Some UEs 120 can be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. An MTC UE or eMTC UE can include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, or a location tag, that can communicate with a network node, another device (e.g., a remote device), or some other entity. A UE 120 can be considered an Internet of Things (IoT) device or can be implemented as a NB-IoT (narrowband IoT) device. Some UEs 120 can be considered customer premises equipment. A UE 120 can be included in a housing that houses components of the UE 120, such as processor components or memory components. In some examples, the processor components and the memory components can be coupled together. For example, the processor components (e.g., one or more processors) and the memory components (e.g., a memory) can be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.

[0038] Generally, any number of wireless networks 100 can be deployed in a given geographic area. Each wireless network 100 can support a particular RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, or an air interface. The frequencies can also be referred to as carriers or frequency channels. In some cases, a NR or 5G RAT network can be deployed.

[0039] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary to communicate with one another). For example, UE 120 can perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by network node 110. Communication between vehicles (V2V), between vehicles and infrastructure (V2I), between vehicles and pedestrians (V2P), or other devices can be used within a wireless communication system. These devices can transmit messages using a sidelink signal (e.g., a PC5 interface). These devices can operate in a vehicle-to-everything (V2X) mode.

[0040] Devices of wireless network 100 can use electromagnetic spectrum for communication, which can be subdivided by frequency or wavelength into various classes, bands, or channels. For example, devices of wireless network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7. 125 GHz) and FR2 (24.25 GHz - 52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with respect to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite the fact that the Extremely High Frequency (EHF) band, which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band, spans from 30 GHz to 300 GHz.

[0041] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified operating bands for these mid-band frequencies as Frequency Range designation FR3 (7.125 GHz - 24.25 GHz). Bands that fall within FR3 can inherit FR1 characteristics or FR2 characteristics, and as such, the features of FR1 or FR2 can be effectively extended into the mid-band frequencies. Furthermore, higher bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as Frequency Range designations FR4-a or FR4-l (52.6 GHz - 71 GHz), FR4 (52.6 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher bands fall within the EHF band.

[0042] With these examples in mind, unless specifically stated otherwise, if the term “sub-6 GHz” is used herein, it can refer broadly to frequencies that can be less than 6 GHz, frequencies that can be within FR1, or frequencies that can include mid-band frequencies. Further, unless specifically stated otherwise, if the term “millimeter wave” is used herein, it can refer broadly to frequencies that can include mid-band frequencies, frequencies that can be within FR2, FR4, FR4-a, or FR4-l, or FR5, or frequencies that can be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-l, or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0043] In some aspects, UE 120 can include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 can receive a configuration associated with transmitting S-SSBs, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE 120; receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions; and perform communications associated with the set of second S-SSB occasions in accordance with the priority information. Additionally, or alternatively, the communication manager 140 can perform one or more other operations described herein.

[0044] As indicated above, Figure 1 are provided as examples. Other examples can differ from what is described with respect to Figure 1 the examples described with respect to

[0045] Figure 2is a diagram illustrating an example 200 of a network node 110 in wireless network 100 communicating with a UE 120. Network node 110 can be equipped with a set of antennas 234a through 234t, such as T antennas (T> 1). UE 120 can 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 front end components, such as antennas 234 and modem 232. In some examples, network node 110 can include an interface, communication component, or another component that facilitates communication with UE 120 or another network node. Some network nodes 110 can not include radio frequency components that facilitate direct communication with UE 120, such as one or more CUs or one or more DUs.

[0046] At network node 110, transmit processor 220 can receive data from data source 212 that is intended for the UE 120 (or a set of UEs 120). Transmit processor 220 can select one or more modulation and coding schemes (MCSs) for the UE 120 using one or more channel quality indicators (CQIs) received from the UE 120. Network node 110 can process (e.g., encode and modulate) the data for UE 120 using the MCSs selected for UE 120 and can provide data symbols to UE 120. Transmit processor 220 can process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 can generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). Transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, or reference symbols, if applicable, and can 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). Each output symbol stream can be provided to a modulator component (shown as MOD) of modem 232 using a respective modulator component. Each modem 232 can process a respective output symbol stream (e.g., for OFDM) using a respective modulator component to obtain an output sample stream. Each modem 232 can further process (e.g., convert to analog, amplify, filter, or upconvert) the output sample stream using a respective modulator component to obtain a downlink signal. Modems 232a through 232t can 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).

[0047] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) can receive the downlink signals from network node 110 or other network nodes 110 and can provide a set of 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 can be provided to a demodulator component (shown as DEMOD) of a modem 254. Each modem 254 can condition (e.g., filter, amplify, downconvert, or digitize) a received signal to obtain input samples using a respective demodulator component. Each modem 254 can further process the input samples (e.g., for OFDM) using a demodulator component to obtain received symbols. A MIMO detector 256 can obtain received symbols from modems 254, can perform MIMO detection on the received symbols if applicable, and can provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, can provide decoded data for UE 120 to a data sink 260, and can provide decoded control information and system information to a controller / processor 280. The term “controller / processor” can refer to one or more controllers, one or more processors, or combinations thereof. A channel processor can determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, or a CQI parameter, among other examples. In some examples, one or more components of UE 120 can be included in a housing 284.

[0048] A network controller 130 can include a communication unit 294, a controller / processor 290, and a memory 292. Network controller 130 can include, for example, one or more devices in a core network. Network controller 130 can communicate with network node 110 via communication unit 294.

[0049] One or more antennas (e.g., antennas 234a through 234t or antennas 252a through 252r) can include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, among other examples. An antenna panel, antenna group, set of antenna elements, or antenna array can include one or more antenna elements (within a single housing or multiple housings), a set of co-planar antenna elements, a set of non-co-planar antenna elements, or one or more antenna elements coupled to one or more transmit or receive components (such as Figure 2 one or more components) of a wireless device.

[0050] On the uplink, at UE 120, a transmit processor 264 can receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, or CQI) from controller / processor 280. Transmit processor 264 can generate reference symbols for one or more reference signals. The symbols from transmit processor 264 can be precoded by a TX MIMO processor 266 if applicable, further processed by modems 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to network node 110. In some examples, modems 254 of UE 120 can include modulators and demodulators. In some examples, UE 120 includes a transceiver. The transceiver can include any combination of antenna 252, modems 254, MIMO detector 256, receive processor 258, transmit processor 264, or TX MIMO processor 266. The transceiver can be used by a processor (e.g., controller / processor 280) and memory 282 to perform the various processes described herein (e.g., with reference to FIGs. 1-10). Figures 4 to 1 2) aspects of any of the processes described herein.

[0051] At network node 110, the uplink signals from UE 120 or other UEs can be received by antennas 234, processed by modems 232 (e.g., demodulator components of modems 232, shown as DEMOD), detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 can provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240. Network node 110 can include communication unit 244 and can communicate with network controller 130 via communication unit 244. Network node 110 can include scheduler 246 to schedule one or more UEs 120 for downlink or uplink communications. In some examples, modems 232 of network node 110 can include modulators and demodulators. In some examples, network node 110 includes a transceiver. The transceiver can include any combination of antenna 234, modems 232, MIMO detector 236, receive processor 238, transmit processor 220, or TX MIMO processor 230. The transceiver can be used by a processor (e.g., controller / processor 240) and memory 242 to perform the various processes described herein (e.g., with reference to FIGs. 1-10). Figures 4 to 1 2) aspects of any of the processes described herein.

[0052] In some aspects, the controller / processor 280 can be a component of a processing system. A processing system generally can be a system or series of machines or components that receives input and processes the input to produce a set of outputs (which can be delivered to other systems or components, for example, of the UE 120). For example, the processing system of the UE 120 can be a system that includes various other components or subcomponents of the UE 120.

[0053] The processing system of the UE 120 can interact with one or more other components of the UE 120, can process information received from one or more other components (such as inputs or signals), or can output information to one or more other components. For example, a chip or modem of the UE 120 can include a processing system, a first interface for receiving or obtaining information by the processing system, and a second interface for outputting, sending, or providing information by the processing system. In some examples, the first interface can be an interface between the processing system of the chip or modem and a receiver, such that the UE 120 can receive information or signal inputs and can pass the information to the processing system. In some examples, the second interface can be an interface between the processing system of the chip or modem and a transmitter, such that the UE 120 can send information output from the chip or modem. One of ordinary skill in the art would readily recognize that the second interface can also receive or obtain information or signal inputs, and the first interface can also output, send, or provide information.

[0054] In some aspects, the controller / processor 240 can be a component of a processing system. A processing system generally can be a system or series of machines or components that receives input and processes the input to produce a set of outputs (which can be delivered to other systems or components, for example, of the network node 110). For example, the processing system of the network node 110 can be a system that includes various other components or subcomponents of the network node 110.

[0055] The processing system of network node 110 can interact with one or more other components of network node 110, process information (such as input or signals) received from one or more other components, or output information to one or more other components. For example, the chip or modem of network node 110 may include: a processing system, a first interface for receiving or acquiring information, and a second interface for outputting, transmitting, or providing information. In some examples, the first interface may be an interface between the processing system of the chip or modem and a receiver, allowing network node 110 to receive information or signal input and to pass information to the processing system. In some examples, the second interface may be an interface between the processing system of the chip or modem and a transmitter, allowing network node 110 to transmit information output from the chip or modem. Those skilled in the art will readily recognize that the second interface may also acquire or receive information or signal input, and the first interface may also output, transmit, or provide information.

[0056] The controller / processor 240 of network node 110, the controller / processor 280 of UE 120, or Figure 2 Any other component may perform one or more techniques associated with sidelink synchronization, as described in more detail elsewhere in this document. For example, the controller / processor 240 of network node 110, the controller / processor 280 of UE 120, or... Figure 2 Any other component (or combination of components) may perform or direct, for example, as described herein. Figure 9 The operation of process 900 and / or other processes. Memory 242 and memory 282 may store data and program code for network node 110 and UE 120, respectively. In some examples, memory 242 and memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code or program code) for wireless communication. For example, one or more instructions may cause one or more processors, UE 120, or network node 110 to perform or direct, as described herein, when executed by one or more processors of network node 110 or UE 120 (e.g., directly, or after compilation, transformation, or interpretation). Figure 9 The operation of process 900 and / or other processes. In some examples, the execution instructions may include run instructions, transform instructions, compile instructions and / or interpret instructions, etc.

[0057] In some aspects, UE 120 includes means for receiving a configuration associated with transmitting S-SSBs, wherein the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and wherein the set of second S-SSB occasions are included in a sidelink resource pool of UE 120; means for receiving priority information indicating one or more transmission priorities for the set of second S-SSB occasions; and / or means for performing communications associated with the set of second S-SSB occasions in accordance with the priority information. The means for UE 120 to perform operations described herein can include, for example, one or more of 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.

[0058] Although Figure 2 The blocks in FIG. 14 are illustrated as distinct components, but the functionality described above in relation to these blocks can be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described in relation to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by controller / processor 280 or under the control of the controller / processor.

[0059] In some aspects, a separate processor can perform all of the functions described as being performed by the one or more processors. In some aspects, a set of functions can be performed collectively by the one or more processors. For example, a first set of one or more processors of the one or more processors can perform a first function described as being performed by the one or more processors, and a second set of one or more processors of the one or more processors can perform a second function described as being performed by the one or more processors. The first set of processors and the second set of processors can be the same set of processors or can be different sets of processors. References to “one or more processors” should be understood as referring to any one or more of the processors described in connection with Figure 2 References to “one or more memories” should be understood as referring to any one or more of the memories of the corresponding device, such as the memories described in connection with Figure 2 For example, functions described as being performed by one or more memories can be performed by the same subset of the one or more memories or by a different subset of the one or more memories.

[0060] As indicated above, the examples in Figure 2 are provided as examples. Other examples can differ from what is described in relation to the examples described in relation to Figure 2 .

[0061] Deployment of communication systems, such as 5G NR systems, can arrange various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, network entity, mobility element of a network, RAN node, core network node, network element, base station, or network equipment of a network can be implemented in an aggregated architecture or a disaggregated architecture. For example, a base station, such as a Node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a TRP, or a cell, and so forth, or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also referred to as a standalone base station or a monolithic base station) or a disaggregated base station. A “network entity” or “network node” can refer to a disaggregated base station or one or more units of a disaggregated base station, such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof.

[0062] An aggregated base station (e.g., an aggregated 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 disaggregated base station (e.g., a disaggregated network node) can be configured to utilize a protocol stack that is physically or logically distributed between 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. The DUs can be implemented to communicate with one or more RUs. Each of the CUs, DUs, and RUs can also be implemented as virtual units, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and so forth.

[0063] The type of base station operation or network design can take into account the aggregated nature of the base station functionality. For example, a disaggregated 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 scaling of the communication system by separating the base station functionality into one or more units that can be deployed individually. A disaggregated 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 enable flexibility in network design. The various units of a disaggregated base station can be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

[0064] Figure 3is a diagram illustrating an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 can include a CU 310, which can communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units, such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 can communicate with one or more DUs 330 via respective fronthaul links, such as over an Fl interface. Each of the DUs 330 can communicate with one or more RUs 340 via respective front-haul links. Each of the RUs 340 can communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 can be served by multiple RUs 340 simultaneously.

[0065] Each of the units (including the CU 310, the DUs 330, the RUs 340), as well as the near-RT RIC 325, the non-RT RIC 315, and the SMO framework 305, can include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via wired or wireless transmission media. Each of the units, or an associated processor or controller providing instructions to one or more communication interfaces of the respective unit, can be configured to communicate with one or more of the other units via the transmission media. In some examples, each of the units can include a wired interface configured to receive or transmit signals to one or more of the other units over a wired transmission medium, and a wireless interface, which can include a receiver, a transmitter, or a transceiver (such as a RF transceiver), configured to receive or transmit signals to one or more of the other units over a wireless transmission medium, or both.

[0066] In some aspects, the CU 310 can host one or more higher layer control functions. Such control functions can include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, among other examples. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 310. The CU 310 can be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some implementations, the CU 310 can be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP units can communicate bi-directionally with the CU-CP units via an interface, such as an El interface. The CU 310 can be implemented to communicate with the DUs 330 as needed for network control and signaling.

[0067] Each DU 330 can correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 can host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers, at least in part according to a functional split, such as a functional split defined by 3GPP. In some aspects, the one or more high PHY layers can be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, and modulation and demodulation, among other examples. In some aspects, the DU 330 can also host one or more low PHY layers, such as implemented by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, or physical random access channel (PRACH) extraction and filtering, among other examples. Each layer (which can also be referred to as a module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0068] Each RU 340 can implement low-layer functionality. In some deployments, the RUs 340 controlled by the DUs 330 can correspond to logical nodes that host RF processing functions or low PHY layer functions based on a functional split (e.g., a functional split defined by 3GPP), such as a low-layer functional split, such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, among other examples. In such an architecture, each RU 340 can be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some implementations, real-time and non-real-time aspects of communicating with the control and user planes of the RUs 340 can be controlled by the corresponding DUs 330. In some scenarios, this configuration can enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.

[0069] The SMO framework 305 can be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface, such as an Ol interface. For virtualized network elements, the SMO framework 305 can be configured to interact with a cloud computing platform, such as an Open Cloud (O-Cloud) platform 390, to perform network element lifecycle management, such as instantiating virtualized network elements, via a cloud computing platform interface, such as an 02 interface. Such virtualized network elements can include, but are not limited to, the CU 310, the DUs 330, the RUs 340, the non-RT RIC 315, and the near-RT RIC 325. In some implementations, the SMO framework 305 can communicate with hardware aspects of a 4G RAN, such as an Open eNB (O-eNB) 311, via an Ol interface. Additionally, in some implementations, the SMO framework 305 can directly communicate with each of the one or more RUs 340 via a respective Ol interface. The SMO framework 305 can also include the non-RT RIC 315 configured to support functionality of the SMO framework 305.

[0070] The non-RT RIC 315 can be configured to include logical functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and update, or policy-based steering of applications / features in the near-RT RIC 325. The non-RT RIC 315 can be coupled to, or in communication with, the near-RT RIC 325, such as via an Al interface. The near-RT RIC 325 can be configured to include logical functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions by an interface, such as via an E2 interface, that connects one or more CUs 310, one or more DUs 330, or both, and an O-eNB with the near-RT RIC 325.

[0071] In some implementations, to generate AI / ML models to be deployed in the near-RT RIC 325, the non-RT RIC 315 can receive parameters or external enrichment information from an external server. Such information can be utilized by the near-RT RIC 325 and can be received at the SMO framework 305 or the non-RT RIC 315 from non-network data sources or from network functions. In some examples, the non-RT RIC 315 or the near-RT RIC 325 can be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 can monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305, such as reconfiguration via an Ol interface, or via creation of RAN management policies, such as Al interface policies.

[0072] As indicated above, Figure 3 are provided as examples. Other examples can differ from what is described Figure 3 with respect to the examples described with respect to

[0073] Figure 4 is a diagram illustrating an example 400 of sidelink communication in accordance with the present disclosure.

[0074] As Figure 4As shown, the first UE 405-1 can communicate with the second UE 405-2 (and one or more other UEs 405) via one or more sidelink channels 410. The UEs 405-1 and 405-2 can communicate using one or more sidelink channels 410 for P2P communication, D2D communication, V2X communication (e.g., which can include V2V communication, V2I communication, and / or V2P communication), and / or mesh networking. In some aspects, the UEs 405 (e.g., UE 405-1 and / or UE 405-2) can correspond to one or more other UEs described elsewhere herein, such as the UEs 120. In some aspects, the one or more sidelink channels 410 can use a PC5 interface and / or can operate in a high frequency band (e.g., a 5.9 GHz band). Additionally, or alternatively, the UEs 405 can synchronize timing of transmission time intervals (TTIs) (e.g., frames, subframes, slots, or symbols) using global navigation satellite system (GNSS) timing.

[0075] As shown, the first UE 405-1 can communicate with the second UE 405-2 (and one or more other UEs 405) via one or more sidelink channels 410. The UEs 405-1 and 405-2 can communicate using one or more sidelink channels 410 for P2P communication, D2D communication, V2X communication (e.g., which can include V2V communication, V2I communication, and / or V2P communication), and / or mesh networking. In some aspects, the UEs 405 (e.g., UE 405-1 and / or UE 405-2) can correspond to one or more other UEs described elsewhere herein, such as the UEs 120. In some aspects, the one or more sidelink channels 410 can use a PC5 interface and / or can operate in a high frequency band (e.g., a 5.9 GHz band). Additionally, or alternatively, the UEs 405 can synchronize timing of transmission time intervals (TTIs) (e.g., frames, subframes, slots, or symbols) using global navigation satellite system (GNSS) timing. Figure 4 Further shown, the one or more sidelink channels 410 can include a physical sidelink control channel (PSCCH) 415, a physical sidelink shared channel (PSSCH) 420, and / or a physical sidelink feedback channel (PSFCH) 425. The PSCCH 415 can be used to convey control information, similar to a physical downlink control channel (PDCCH) and / or a physical uplink control channel (PUCCH) used for cellular communications with a network node 110 via an access link or access channel. The PSSCH 420 can be used to convey data, similar to a physical downlink shared channel (PDSCH) and / or a physical uplink shared channel (PUSCH) used for cellular communications with a network node 110 via an access link or access channel. For example, the PSCCH 415 can carry sidelink control information (SCI) 430, which can indicate various control information for a sidelink communication, such as one or more resources (e.g., time resources, frequency resources, and / or spatial resources) in which a transport block (TB) 435 can be carried on the PSSCH 420. The TB 435 can include data. The PSFCH 425 can be used to convey sidelink feedback 440, 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).

[0076] Although shown on the PSCCH 415, in some aspects, the SCI 430 can include multiple communications in different stages, such as a first stage SCI (SCI-1) and a second stage SCI (SCI-2). The SCI-1 can be transmitted on the PSCCH 415. The SCI-2 can be transmitted on the PSSCH 420. The SCI-1 can include, for example, an indication of one or more resources (e.g., time resources, frequency resources, and / or spatial resources) on the PSSCH 420, information for decoding a sidelink communication on the PSSCH, a quality of service (QoS) priority value, a resource reservation period, a PSSCH demodulation reference signal (DMRS) pattern, an SCI format for the SCI-2, a beta offset for the SCI-2, a number of PSSCH DMRS ports, and / or a modulation and coding scheme (MCS). The SCI-2 can include information associated with a data transmission on the PSSCH 420, such as a hybrid automatic repeat request (HARQ) process ID, a new data indicator (NDI), a source identifier, a destination identifier, and / or a channel state information (CSI) report trigger.

[0077] In some aspects, the one or more sidelink channels 410 can use a resource pool. For example, a scheduling assignment (e.g., included in the SCI 430) can be transmitted in a subchannel using a particular resource block (RB) across time. In some aspects, a data transmission associated with the scheduling assignment (e.g., on the PSSCH 420) can 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.

[0078] In some aspects, UE 405 can operate using a sidelink transmission mode (e.g., mode 1), in which resource selection and / or scheduling is performed by a network node 110 (e.g., a base station, a CU, or a DU). For example, UE 405 can receive a grant (e.g., in downlink control information (DCI) or in a radio resource control (RRC) message, such as for a configured grant) for sidelink channel access and / or scheduling from network node 110 (e.g., directly or via one or more network nodes). In some aspects, UE 405 can operate using a transmission mode (e.g., mode 2), in which resource selection and / or scheduling is performed by UE 405 (e.g., instead of network node 110). In some aspects, UE 405 can perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 405 can measure a received signal strength indicator (RSSI) parameter (e.g., a sidelink RSSI (S-RSSI) parameter) associated with various sidelink channels, can measure a reference signal received power (RSRP) parameter (e.g., a PSSCH-RSRP parameter) associated with various sidelink channels, and / or can measure a reference signal received quality (RSRQ) parameter (e.g., a PSSCH-RSRQ parameter) associated with various sidelink channels, and can select a channel for transmission of a sidelink communication based at least in part on the measurements.

[0079] Additionally or alternatively, UE 405 can perform resource selection and / or scheduling using SCI 430 received in PSCCH 415, which can indicate occupied resources and / or channel parameters. Additionally or alternatively, UE 405 can perform resource selection and / or scheduling by determining a channel busy ratio (CBR) associated with various sidelink channels, which can be used for rate control (e.g., by indicating a maximum number of resource blocks that UE 405 can use for a particular set of subframes).

[0080] In a UE 405-performed resource selection and / or scheduled transmission mode, the UE 405 can generate a sidelink grant and can transmit the grant in SCI 430. The sidelink grant can 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 to be used for an upcoming sidelink transmission (e.g., for a TB 435), one or more subframes to be used for an upcoming sidelink transmission, and / or a modulation and coding scheme (MCS) to be used for an upcoming sidelink transmission. In some aspects, the UE 405 can generate a sidelink grant indicating one or more parameters for semi-persistent scheduling (SPS), such as a periodicity of sidelink transmissions. Additionally, or alternatively, the UE 405 can generate a sidelink grant for event-driven scheduling, such as for on-demand sidelink messages.

[0081] In some aspects, the first UE 405 can transmit a sidelink synchronization signal block (SSB). A “sidelink SSB” is sometimes abbreviated as “S-SSB.” For example, the first UE 405 can transmit a sidelink SSB to the second UE 405. The sidelink SSB can include a physical sidelink broadcast channel (PSBCH), which can carry information to support synchronization in sidelink. The sidelink SSB can also include a sidelink primary synchronization signal (S-PSS) and a sidelink secondary synchronization signal (S-SSS), which the second UE 405 can use to synchronize with the first UE 405. In some examples, the first UE 405 can act as a synchronization reference for the second UE 405, which means that the second UE 405 can synchronize according to a time reference and / or a frequency reference derived from the sidelink SSB transmitted by the first UE 405. The sidelink SSB can be periodically transmitted within a sidelink bandwidth part on resources (e.g., slots) that are not part of a sidelink resource pool. The location of the sidelink SSB can be configured (e.g., preconfigured) within the sidelink bandwidth part.

[0082] The first UE 405 can be associated with a synchronization priority. The synchronization priority is a value used to determine whether a UE 405 receiving a sidelink SSB should synchronize according to the sidelink SSB. The synchronization priority can include a value indicating a priority. A lower synchronization priority can correspond to a higher priority for synchronization. For example, a synchronization priority of an S-SSB with a synchronization priority of “P0” (e.g., the lowest possible synchronization priority) can be prioritized over a synchronization priority of an S-SSB with a synchronization priority of “1” or higher. For example, if the receiving UE 405 is associated with a lower synchronization priority than the sidelink SSB, the receiving UE 405 can not synchronize using the sidelink SSB. If the receiving UE 405 is associated with a higher synchronization priority than the sidelink SSB, the receiving UE 405 can synchronize using the sidelink SSB. The synchronization priority of a detected sidelink SSB can be determined according to a sidelink synchronization signal (SLSS) identifier of the sidelink SSB and according to a coverage status indication in the PSBCH. The SLSS identifier and the coverage status indication can together indicate the synchronization priority of the detected S-SSB. Synchronization can include GNSS-based synchronization, in which the first UE 405 is synchronized to time information or frequency information derived from a GNSS module of the UE, or network-based synchronization, in which the first UE 405 is synchronized to time information or frequency information derived from a network node (e.g., a gNB or eNB). It should be noted that in some contexts, “synchronization priority” can be different from “transmission priority,” which is a priority value used to determine whether a given communication should be transmitted or received by another communication. For example, when the first UE 405 prioritizes between S-SSB transmission and PSSCH transmission, the transmission priority can be different from the synchronization priority, and in some examples, can include 8 possible priority values. The synchronization priority can be the same as the transmission priority when prioritizing between transmitting a first S-SSB or receiving a second S-SSB. For example, the first UE 405 can use a first synchronization priority of an S-SSB to be transmitted by the first UE 405 and a second synchronization priority of an S-SSB to be received by the first UE 405 to determine whether to transmit the S-SSB or receive the S-SSB.

[0083] An S-SSB transmitted according to a configuration (e.g., preconfigured) within a sidelink bandwidth part can be referred to as a first S-SSB. For example, the first S-SSB can be transmitted on a resource defined by the configuration, where the resource is referred to as a first S-SSB occasion. There can be multiple first S-SSB occasions within an S-SSB period defined by the configuration. The multiple first S-SSB occasions can be distributed in time.

[0084] The first UE 405 can also be associated with one or more additional candidate S-SSB occasions (referred to herein as second S-SSB occasions). A second S-SSB occasion is a resource on which an S-SSB can or can not be transmitted. For example, a second S-SSB occasion can provide an additional occasion for S-SSB transmission, which can allow prioritization of traffic and recovery from failures to obtain channel access for S-SSB transmission. In some aspects, one or more second S-SSB occasions are excluded from the sidelink resource pool of the first UE 405. In some other aspects, one or more S-SSB occasions are included in the sidelink resource pool of the first UE 405 (e.g., belong to the sidelink resource pool).

[0085] In some aspects, the one or more second S-SSB occasions can be indicated via a parameter, such as sl-NumSSB-WithinPeriod for each subcarrier spacing (SCS). For example, a range of available values for the parameter can be configured such that the parameter can be used to indicate a second S-SSB occasion. In some other aspects, a sidelink S-SSB slot (including the first S-SSB occasion) can be associated with (e.g., have) K corresponding second S-SSB occasions, and a gap between the sidelink S-SSB slot and the K corresponding second S-SSB occasions can be configured (e.g., preconfigured). In some aspects, the number and location of the one or more second S-SSB occasions can be separately configured (e.g., preconfigured) via RRC signaling (e.g., separately from the configuration of the first S-SSB occasion). In some aspects, an S-SSB period can include a plurality of consecutive second S-SSB occasions. In some aspects, the number of second S-SSB occasions can be configured (e.g., preconfigured), and the location can be determined based on the number of second S-SSB occasions.

[0086] As indicated above, Figure 4 are provided as examples. Other examples can differ from what is described with respect to Figure 4 the examples described with respect to

[0087] Figure 5 is a diagram illustrating an example 500 of sidelink communications and access link communications in accordance with the present disclosure.

[0088] As Figure 5 shown, a transmitter (Tx) / receiver (Rx) UE 505 and an Rx / Tx UE 510 can communicate with each other via a sidelink, as described above in connection with Figure 4As further shown, in some sidelink modes, the network node 110 can communicate with the Tx / Rx UE 505, such as via a first access link (e.g., directly or via one or more network nodes). Additionally or alternatively, in some sidelink modes, the network node 110 can communicate with the Rx / Tx UE 510, such as via a first access link (e.g., directly or via one or more network nodes). The Tx / Rx UE 505 and / or the Rx / Tx UE 510 can correspond to one or more UEs described elsewhere herein, such as a UE 120 of FIG. 1. Thus, a direct link between UEs 120 (e.g., via a PC5 interface) can be referred to as a sidelink, and a direct link between the network 110 and a UE 120 (e.g., via a Uu interface) can be referred to as an access link. Sidelink communications can be transmitted via a sidelink, and access link communications can be transmitted via an access link. Access link communications can be downlink communications (from the network node 110 to the UE 120) or uplink communications (from the UE 120 to the network node 110). Figure 1

[0089] As indicated above, Figure 5 are provided as examples. Other examples can differ from what is described with respect to the examples Figure 5 described with respect to the examples

[0090] In some examples, a UE can communicate in an unlicensed spectrum. Unlicensed spectrum generally involves a decentralized channel access mechanism, such as a listen-before-talk (LBT) mechanism, to access a channel (e.g., a resource on a channel) and communicate with other UEs. The length of time that a UE gains access to a channel can be referred to as a channel occupancy time (COT). A UE can be allowed to transmit communications during a COT, and in some examples, can share a COT with other wireless communication devices. One example of a radio access technology for communicating in an unlicensed spectrum is NR Unlicensed (NR-U).

[0091] ​In some deployments, a UE’s COT can end if the COT is not used for a threshold length of time (e.g., if the UE does not transmit any communications in the COT for a threshold length of time), and other UEs can gain channel access. The UE can transmit communications on the UE’s sidelink resource pool during the COT. Thus, it can be beneficial to include a second S-SSB occasion in the sidelink resource pool, such that a second S-SSB transmission on the second S-SSB occasion can help maintain access to the UE’s COT. However, the UE’s sidelink resource pool can also be used for other transmissions or receptions, such as PSCCH transmissions or receptions or PSSCH transmissions or receptions. Without rules for prioritizing S-SSB transmissions on the second S-SSB occasion over other communications that overlap with the second S-SSB occasion, sidelink synchronization can be negatively impacted and throughput can decrease. Moreover, in some examples, a second S-SSB transmission by one UE can overlap with an S-SSB transmission by another UE. Without rules for prioritizing transmissions and receptions of S-SSBs when a second S-SSB transmission overlaps with a reception of another S-SSB, UEs can not be able to efficiently synchronize on the sidelink, which can be particularly impactful when out of radio access network coverage.

[0092] Various aspects generally relate to prioritization of sidelink communications. Some aspects more specifically relate to prioritization between a second S-SSB occasion in a sidelink resource pool and other communications. In some examples, a UE can receive a configuration indicating a first S-SSB occasion and a set of second S-SSB occasions (e.g., additional candidate S-SSB occasions). The UE can also receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The UE can perform a communication associated with the set of second S-SSB occasions (which can include a transmission of an S-SSB on a second S-SSB occasion or a transmission or reception of another communication) in accordance with the priority information. Thus, sidelink synchronization is improved and throughput is increased. In some examples, the UE can transmit an S-SSB on a second S-SSB occasion based at least in part on comparing a received transmission priority of an S-SSB to a transmission priority of an S-SSB on the second S-SSB occasion. For example, the transmission priority associated with the received S-SSB can be based at least in part on (or can be) a synchronization priority of the received S-SSB. Thus, efficiency of sidelink synchronization is improved, particularly when out of radio access network coverage.

[0093] Figure 6is a diagram illustrating an example 600 of signaling associated with prioritization for sidelink synchronization signal blocks, in accordance with aspects of the present disclosure. Example 600 includes a first UE (e.g., UE 120, UE 405, UE 505, UE 510) and a second UE (e.g., UE 120, UE 405, UE 505, UE 510).

[0094] As shown in FIG. 6, the first UE can receive a configuration associated with transmitting S-SSBs (e.g., from a network node, such as network node 110). For example, the configuration can include an RRC message, multiple RRC messages (e.g., two or more separate transmissions of RRC signaling), and / or another form of message (e.g., MAC signaling, DCI, etc.). In some aspects, the configuration can indicate a first S-SSB occasion. For example, the configuration can include a sidelink bandwidth part configuration that indicates the first S-SSB occasion (e.g., a sidelink S-SSB slot). In some aspects, the configuration can indicate a set of second S-SSB occasions. For example, in addition to the first S-SSB occasion, the configuration can indicate one or more resources on which S-SSBs can be transmitted by the first UE, as described in more detail in connection with Figure 4 The configuration can include, for example, a sidelink bandwidth part configuration, a sidelink resource pool configuration, and / or the like, as described in more detail in connection with

[0095] As shown in FIG. 6, the first UE can receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions (e.g., from a network node, such as network node 110, or from the second UE). In some aspects, the priority information can be included in or received in association with the configuration shown by reference number 605. A transmission priority can include a value indicating a priority of a transmission. A lower transmission priority can correspond to a higher priority for a transmission. For example, a transmission priority of “1” can cause a given transmission to be prioritized (e.g., transmitted first or received first) over a transmission with a transmission priority of “2” or higher.

[0096] In some aspects, the priority information can indicate a single transmission priority for all of the set of second S-SSB occasions. For example, the priority information can indicate one transmission priority configured via RRC signaling. In this example, the one transmission priority can apply to all of the second S-SSB occasions configured by the configuration, as described in more detail in connection with Figure 7The priority information can indicate a single transmission priority for the first S-SSB occasion and the second S-SSB occasion, as shown by reference number 700 in FIG. 7. In some aspects, the transmission priority can be provided via a parameter applied to the first S-SSB occasion, such as sl-SSB-PriorityNR. For example, the transmission priority of the second S-SSB occasion can be the same as the transmission priority for the first S-SSB occasion. This can reduce overhead relative to signaling separate transmission priorities for the first S-SSB occasion and the second S-SSB occasion. In some other aspects, the priority information can include a parameter specific to the second S-SSB occasion. For example, the priority information can indicate one transmission priority applied to the set of second S-SSB occasions, and another transmission priority can be applied to the first S-SSB occasion. Providing a transmission priority specific to the second S-SSB occasion can improve flexibility of prioritization relative to a single transmission priority applied to the first S-SSB occasion and the second S-SSB occasion.

[0097] In some aspects, the priority information can indicate multiple transmission priorities. For example, the priority information can indicate a first transmission priority and a second transmission priority. The first transmission priority can be applied to the set of second S-SSB occasions before S-SSBs are transmitted on the set of second S-SSB occasions, and the second transmission priority can be applied to the set of second S-SSB occasions after S-SSBs are transmitted on the set of second S-SSB occasions, as shown by reference number 710 in FIG. 7. Figure 7 For example, the first transmission priority can be applied if an S-SSB has not yet been transmitted in a given S-SSB period, and the second transmission priority can be applied if an S-SSB has already been transmitted in the given S-SSB period. In some aspects, the second transmission priority can be higher than the first transmission priority. In some other aspects, the second transmission priority can be lower than the first transmission priority. In some aspects, the priority information can explicitly indicate the first transmission priority and the second transmission priority (e.g., by including a first value identifying the first transmission priority, such as “P1,” and a second value identifying the second transmission priority, such as “P2”). In some other aspects, the priority information can explicitly indicate the first transmission priority, and the second transmission priority can be indicated using an offset relative to the first transmission priority (e.g., by including a first value identifying the first transmission priority, such as “P1,” and an offset indicating the second transmission priority relative to the first transmission priority, such as “+1”).

[0098] As another example, the priority information can indicate a respective transmission priority for each of the plurality of second S-SSB occasions. For example, the priority information can include a plurality of transmission priorities, each transmission priority corresponding to a different second S-SSB occasion. As another example, the priority information can indicate one or more transmission priorities corresponding to one or more of the second S-SSB occasions, and the transmission priorities for a remaining portion of the second S-SSB occasions can be derived from the one or more transmission priorities according to a rule (which can be indicated by the priority information, or which can be defined in a wireless communication specification or a configuration of the first UE). In some aspects, the transmission priority can be based at least in part on whether an S-SSB has already been transmitted in the S-SSB period. For example, if an S-SSB has not yet been transmitted or received in the S-SSB period, the transmission priority for a second S-SSB occasion in the S-SSB period can have a higher transmission priority (corresponding to a lower priority ordering of the second S-SSB occasion) than if an S-SSB has already been transmitted or received in the S-SSB period. Figure 8 Examples 800 and 810 illustrate examples of transmission priorities for each of a plurality of second S-SSB occasions. In example 800, the transmission priorities of the second S-SSB occasions decrease in a substantially uniform manner, such that the transmission priorities of the S-SSBs increase in a substantially uniform manner. In example 810, the transmission priorities of the plurality of second S-SSB occasions decrease based at least in part on a starting point. For example, the plurality of second S-SSB occasions are associated with a starting point 820. Prior second S-SSB occasions in the plurality of second S-SSB occasions that occur before the starting point 820 have a first transmission priority (shown as “4”), and subsequent second S-SSB occasions in the plurality of second S-SSB occasions that occur after the starting point 820 have one or more second transmission priorities that are lower than the first transmission priority (as lower transmission priority values can correspond to higher transmission priorities). In example 810, the transmission priorities of the subsequent second S-SSB occasions decrease by 1 per second S-SSB occasion until a minimum value is reached (e.g., “1”), such that the subsequent second S-SSB occasions are progressively assigned higher transmission priorities.

[0099] As shown by reference 615, the first UE can perform communications associated with the set of second S-SSB occasions according to the priority information. For example, the first UE can transmit an S-SSB on a second S-SSB occasion according to a comparison between the one or more transmission priorities associated with the second S-SSB occasion and a transmission priority associated with another sidelink transmission. As another example, the first UE can transmit or receive another sidelink transmission according to the comparison. The other sidelink transmission can at least partially overlap with one or more of the set of second S-SSB occasions.

[0100] In some aspects, the first UE can perform the communication based at least in part on an index of the second S-SSB occasion and a retransmission number index of the PSSCH communication. For example, the first UE can transmit an S-SSB on the second S-SSB occasion based at least in part on the index and the retransmission number index, or can transmit or receive the PSSCH communication on resources at least partially overlapping with the second S-SSB occasion. The retransmission number index can indicate a retransmission of the PSSCH communication. For example, “10” can indicate a tenth retransmission of the PSSCH communication (where the index starts from 1). The retransmission of the PSSCH communication can help the receiving UE decode the PSSCH communication, for example, by facilitating combination of multiple PSSCH communications and by enabling maintenance of a COT. The index of the second S-SSB occasion can indicate a position of the second S-SSB occasion relative to other second S-SSB occasions. For example, an index of “0” can indicate an initial second S-SSB occasion, and an index of “1” can indicate a next second S-SSB occasion after the initial second S-SSB occasion.

[0101] In some aspects, the UE can compare the index of the second S-SSB occasion to the retransmission number index (or a value derived from the retransmission number index). For example, if the S-SSB occasion index is greater than the PSSCH retransmission number index, the UE can prioritize transmission of the S-SSB, otherwise can prioritize the PSSCH communication.

[0102] In some aspects, the first UE can compare a first index derived from the index of the second S-SSB occasion, a second index derived from the retransmission number index, or a combination thereof. For example, the first UE can determine the first index by referencing a table. Additionally or alternatively, the first UE can determine the second index by referencing a table. In some aspects, the first index can be normalized to the PSSCH retransmission number index. Additionally or alternatively, the second index can be normalized to the S-SSB occasion index. Additionally or alternatively, the first index and the second index can be normalized to each other such that the first index and the second index are selected from the same number of potential values. In some aspects, the first UE can determine the first index and the second index by referencing a table, such as Table 1, as follows:

[0103]

[0104] Table 1

[0105] In the above example, the UE can identify the first index according to the “S-SSB occasion index” column of Table 1 and the second index according to the “PSSCH retransmission number index” column of Table 1. The UE can compare the first index to the second index. If the first index is greater than the second index, the first UE can transmit an S-SSB on the second S-SSB occasion with the S-SSB occasion index. If the first index is not greater than the second index, the first UE can transmit or receive a PSSCH communication.

[0106] As indicated above, Figures 6 to 8 are provided as examples. Other examples can differ from what is described with respect to Figures 6 to 8 the examples described with respect to

[0107] Figure 9 is a diagram illustrating an example 900 of prioritization of S-SSBs according to synchronization priority in accordance with the present disclosure. Example 900 includes a first UE (e.g., a UE 120, UE 405, UE 505, UE 510, Figures 6 to 8 of FIG. 13B) and a second UE (e.g., a UE 120, UE 405, UE 505, UE 510, Figures 6 to 8 of FIG. 13B). In example 900, the first UE can be configured with a first S-SSB occasion and one or more second S-SSB occasions, as described above with respect to reference number 605.

[0108] As shown by reference number 910, the second UE can transmit and the first UE can receive an S-SSB (hereinafter referred to as a received S-SSB). The received S-SSB can indicate a synchronization priority of the received S-SSB. In example 900, the synchronization priority of the received S-SSB can be used as a transmission priority for purposes of determining whether a prioritization of reception of a subsequent S-SSB from the second UE should take precedence over transmission of an S-SSB on the second S-SSB occasion by the first UE.

[0109] As shown by reference number 920, the second UE can perform a communication based at least in part on comparing a transmission priority associated with the received S-SSB (e.g., the synchronization priority of the received S-SSB) to a transmission priority of the second S-SSB occasion (which can be the synchronization priority of the second S-SSB occasion).

[0110] In some aspects, a synchronization priority of the received S-SSB can increase (e.g., as a remaining number of time resources of the plurality of second S-SSB occasions decreases) relative to an S-SSB occasion index of the second S-SSB occasions. For example, the first UE can be associated with a plurality of second S-SSB occasions having increasing S-SSB occasion indexes. The synchronization priority of the received S-SSB can increase relative to the S-SSB occasion index. For example, at a first slot associated with a lower S-SSB occasion index, the first UE can identify a first (lower) synchronization priority of the received S-SSB, such that the first UE is more likely to determine to receive the received S-SSB (i.e., another S-SSB transmitted by the same UE as the received S-SSB) rather than transmit a second S-SSB on the first slot. At a second slot associated with a higher S-SSB occasion index, the first UE can identify a second (higher) synchronization priority of the received S-SSB, such that the first UE is more likely to determine to transmit the second S-SSB on the second slot rather than receive the received S-SSB on the first slot. Thus, if the synchronization priority indication of the second S-SSB prioritizes the transmission of the second S-SSB over the received S-SSB, the first UE can switch to a transmission mode and transmit the second S-SSB, which can be more likely to occur as the first UE approaches the end of the plurality of second S-SSB occasions. This technique can be useful for resynchronization or maintenance of time / frequency synchronization with the second UE, while increasing the likelihood that the first UE transmits the second S-SSB on one of the plurality of second S-SSB occasions. This can be useful to reduce overhead, for example, when the S-SSB slot of the first UE overlaps with the S-SSB slot of the second UE.

[0111] In some aspects, a synchronization priority of the second S-SSB can decrease with respect to an S-SSB occasion index of the second S-SSB occasion (e.g., as a remaining number of time resources of the plurality of second S-SSB occasions decreases). For example, the first UE can be associated with a plurality of second S-SSB occasions having increasing S-SSB occasion indices. The synchronization priority of the second S-SSB can decrease with respect to the S-SSB occasion index. For example, at a first time slot associated with a lower S-SSB occasion index, the first UE can identify a first (higher) synchronization priority of the second S-SSB such that the first UE is more likely to determine to receive a received S-SSB (i.e., another S-SSB transmitted by the same UE as the received S-SSB) rather than transmit the second S-SSB on the first time slot. At a second time slot associated with a higher S-SSB occasion index, the first UE can identify a second (lower) synchronization priority of the second S-SSB such that the first UE is more likely to determine to transmit the second S-SSB on the second time slot rather than receive the received S-SSB on the first time slot. Thus, if the synchronization priority of the second S-SSB indicates to prioritize the received S-SSB, the first UE can switch to a transmit mode and transmit the second S-SSB, which can be more likely to occur as the first UE approaches an end of the plurality of second S-SSB occasions. This technique can be useful for re-synchronization or maintaining time / frequency synchronization with the second UE while increasing a likelihood that the first UE transmits the second S-SSB on one of the plurality of second S-SSB occasions.

[0112] As indicated above, Figure 9 are provided as examples. Other examples can differ from what is described Figure 9 with respect to the examples described.

[0113] Figure 10 is a diagram illustrating an example process 1000 performed, for example, by a UE, in accordance with aspects of the present disclosure. Example process 1000 is an example of a process for a first UE of a UE (e.g., UE 120, UE 405, UE 505, UE 510, Figures 6 to 10 performing operations associated with techniques for prioritization for sidelink synchronization signal blocks.

[0114] As Figure 10 indicated above, in some aspects, process 1000 can include receiving a configuration associated with transmitting S-SSBs, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE (block 1010). For example, the UE (e.g., using reception component 820, transmission component 830, processor 812, memory 816, or transceiver 810 of FIG. 8) can receive a configuration associated with transmitting S-SSBs, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE. Figure 11The depicted reception component 1102 and / or communication manager 1106 can receive a configuration associated with transmitting S-SSBs, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions is included in a sidelink resource pool for the UE, as described above.

[0115] As Figure 10 Further as shown, in some aspects, process 1000 can include receiving priority information indicating one or more transmission priorities for the set of second S-SSB occasions (block 1020). For example, the UE (e.g., using reception component 1102 and / or communication manager 1106) can receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions, as described above. Figure 11 The depicted reception component 1102 and / or communication manager 1106 can receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions, as described above.

[0116] As Figure 10 Further as shown, in some aspects, process 1000 can include performing communications associated with the set of second S-SSB occasions in accordance with the priority information (block 1030). For example, the UE (e.g., using reception component 1102 and / or communication manager 1106) can perform communications associated with the set of second S-SSB occasions in accordance with the priority information, as described above. Figure 11 The depicted communication manager 1106 can perform communications associated with the set of second S-SSB occasions in accordance with the priority information, as described above.

[0117] Process 1000 can 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.

[0118] In a first aspect, performing the communications further includes transmitting S-SSBs on the set of second S-SSB occasions in accordance with the priority information.

[0119] In a second aspect, alone or in combination with the first aspect, performing the communications further includes transmitting or receiving a sidelink transmission on the set of second S-SSB occasions in accordance with a transmission priority of the sidelink transmission and the priority information.

[0120] In a third aspect, alone or in combination with one or more of the first and second aspects, the priority information indicates a single priority value for all second S-SSB occasions in the set of second S-SSB occasions.

[0121] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the single priority value applies to the first S-SSB occasion and the set of second S-SSB occasions.

[0122] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the single priority value is a first priority value and the first S-SSB occasion is associated with a second priority value different from the first priority value.

[0123] In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the priority information indicates a first priority value and a second priority value, wherein the first priority value applies to the second set of S-SSB occasions prior to transmission of the S-SSB over the second set of S-SSB occasions, and the second priority value applies to the second set of S-SSB occasions after transmission of the S-SSB over the second set of S-SSB occasions.

[0124] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the priority information explicitly identifies the first priority value and the second priority value.

[0125] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the priority information indicates the second priority value using an offset relative to the first priority value.

[0126] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the second set of S-SSB occasions includes a plurality of second S-SSB occasions, and the priority information indicates a respective transmission priority for each of the plurality of second S-SSB occasions.

[0127] In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, a transmission priority of a later S-SSB occasion of the plurality of second S-SSB occasions is based at least in part on a transmission priority of an earlier S-SSB occasion of the plurality of second S-SSB occasions.

[0128] In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the transmission priority of the later S-SSB occasion of the plurality of second S-SSB occasions is lower than the transmission priority of the earlier S-SSB occasion of the plurality of second S-SSB occasions.

[0129] In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the plurality of second S-SSB occasions is associated with a starting point, wherein a previous second S-SSB occasion of the plurality of second S-SSB occasions that occurs prior to the starting point has a first transmission priority, and wherein a subsequent second S-SSB occasion of the plurality of second S-SSB occasions that occurs after the starting point has one or more second transmission priorities lower than the first transmission priority.

[0130] In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the one or more second transmission priorities decrease over time relative to the origin.

[0131] In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, performing the communication associated with the second set of S-SSB occasions in accordance with the priority information further includes transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication based at least in part on an index of a second S-SSB occasion of the second set of S-SSB occasions and a retransmission number index of a physical sidelink shared channel communication.

[0132] In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication further includes transmitting the S-SSB based at least in part on the index of the second S-SSB occasion being greater than the retransmission number index.

[0133] In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication further includes transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication based at least in part on at least one of a first index derived from the index of the second S-SSB occasion or a second index derived from the retransmission number index.

[0134] In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, performing the communication associated with the second set of S-SSB occasions in accordance with the priority information further includes transmitting the S-SSB based at least in part on comparing a transmission priority associated with a second S-SSB from a second UE with the one or more transmission priorities.

[0135] In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the transmission priority associated with the second S-SSB decreases in accordance with a remaining number of time resources of the second set of S-SSB occasions.

[0136] In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, the transmission priority associated with the second S-SSB is based at least in part on a synchronization priority of the second S-SSB.

[0137] In the twentieth aspect, either alone or in combination with one or more of the first to nineteenth aspects, the one or more transmission priorities are increased based on the remaining amount of time resources of the second S-SSB timing set.

[0138] although Figure 10 An example box of process 1000 is shown, but in some respects, process 1000 may include... Figure 10 The boxes depicted may be fewer, different, or arranged differently compared to additional boxes. Alternatively, two or more boxes in the process 1000 may be executed in parallel.

[0139] Figure 11 This is a diagram of an example device 1100 for wireless communication according to the present disclosure. Device 1100 may be a UE, or a UE may include device 1100. In some aspects, device 1100 includes a receiving component 1102, a transmitting component 1104, and / or a communication manager 1106 that can communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, the communication manager 1106 is combined with... Figure 1 The described communication manager 140. As shown, device 1100 can communicate with another device 1108 (such as a UE or a network node (such as a CU, DU, RU or base station)) using receiving component 1102 and transmitting component 1104.

[0140] In some respects, device 1100 can be configured to perform the functions described herein. Figures 4 to 8 One or more operations as described herein. Additionally or alternatively, device 1100 may be configured to perform one or more processes as described herein, such as Figure 10 The process 1000 or a combination thereof. In some respects, Figure 11 The illustrated device 1100 and / or one or more components may include a combination Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 11 One or more components shown can be combined Figure 2 Implementation within one or more of the described components. Additionally or alternatively, one or more of the components in a set of components may be implemented at least partially as software stored in 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 processor to perform the function or operation of the component.

[0141] The reception component 1102 can receive communications, such as reference signals, control information, data communications, or any combination thereof, from the device 1108. The reception component 1102 can provide received communications to one or more other components of the device 1100. In some aspects, the reception component 1102 can perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and can provide the processed signals to the one or more other components of the device 1100. In some aspects, the reception component 1102 can include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or any combination thereof, as described with reference to the UE. Figure 2 the described UE.

[0142] The transmission component 1104 can transmit communications, such as reference signals, control information, data communications, or any combination thereof, to the device 1108. In some aspects, one or more other components of the device 1100 can generate communications and can provide the generated communications to the transmission component 1104 for transmission to the device 1108. In some aspects, the transmission component 1104 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the device 1108. In some aspects, the transmission component 1104 can include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or any combination thereof, as described with reference to the UE. Figure 2 the described UE.

[0143] The communication manager 1106 can support the operations of the reception component 1102 and / or the transmission component 1104. For example, the communication manager 1106 can receive information associated with configuring reception of communications by the reception component 1102 and / or transmission of communications by the transmission component 1104. Additionally, or alternatively, the communication manager 1106 can generate control information and / or provide the control information to the reception component 1102 and / or the transmission component 1104 to control the reception and / or transmission of communications.

[0144] The reception component 1102 can receive a configuration associated with transmitting S-SSBs, where the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and where the set of second S-SSB occasions are included in a sidelink resource pool of the UE. The reception component 1102 can receive priority information indicating one or more transmission priorities for the set of second S-SSB occasions. The communication manager 1106 can perform communications associated with the set of second S-SSB occasions in accordance with the priority information.

[0145] Figure 11 The number and arrangement of components shown is provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown. Figure 11 than those shown, arranged in a different manner than those shown. Furthermore, Figure 11 Two or more components shown can be implemented within a single component, Figure 11 A single component shown can be implemented as multiple, distributed components. Additionally or alternatively, Figure 11 A set of one or more components shown can be performed by one or more other components, Figure 11 one or more functions described as being performed by another set of components.

[0146] An overview of some aspects of the present disclosure is provided below:

[0147] Aspect 1 : A method of wireless communication performed by a user equipment (UE), the method comprising: receiving a configuration associated with transmitting a sidelink synchronization signal block (S-SSB), wherein the configuration indicates a first S-SSB occasion and a set of second S-SSB occasions, and wherein the set of second S-SSB occasions is included in a sidelink resource pool of the UE; receiving priority information indicating one or more transmission priorities for the set of second S-SSB occasions; and performing a communication associated with the set of second S-SSB occasions in accordance with the priority information.

[0148] Aspect 2: The method of aspect 1, wherein performing the communication further comprises: transmitting the S-SSB over the set of second S-SSB occasions in accordance with the priority information.

[0149] Aspect 3: The method of any of aspects 1-2, wherein performing the communication further comprises: transmitting or receiving a sidelink transmission over the set of second S-SSB occasions in accordance with a transmission priority of the sidelink transmission and the priority information.

[0150] Aspect 4: The method of any of aspects 1-3, wherein the priority information indicates a single priority value for all of the set of second S-SSB occasions.

[0151] Aspect 5: The method of aspect 4, wherein the single priority value applies to the first S-SSB occasion and the set of second S-SSB occasions.

[0152] Aspect 6: The method of aspect 4, wherein the single priority value is a first priority value, and wherein the first S-SSB occasion is associated with a second priority value different from the first priority value.

[0153] Aspect 7: The method of any one of aspects 1 through 6, wherein the priority information indicates a first priority value and a second priority value, wherein the first priority value applies to the second set of S-SSB occasions prior to transmitting the S-SSBs over the second set of S-SSB occasions, and the second priority value applies to the second set of S-SSB occasions after transmitting the S-SSBs over the second set of S-SSB occasions.

[0154] Aspect 8: The method of aspect 7, wherein the priority information explicitly identifies the first priority value and the second priority value.

[0155] Aspect 9: The method of aspect 7, wherein the priority information indicates the second priority value using an offset relative to the first priority value.

[0156] Aspect 10: The method of any one of aspects 1 through 9, wherein the second set of S-SSB occasions includes a plurality of second S-SSB occasions, and wherein the priority information indicates a respective transmission priority for each of the plurality of second S-SSB occasions.

[0157] Aspect 11: The method of aspect 10, wherein a transmission priority of a later S-SSB occasion of the plurality of second S-SSB occasions is based at least in part on a transmission priority of an earlier S-SSB occasion of the plurality of second S-SSB occasions.

[0158] Aspect 12: The method of aspect 11, wherein the transmission priority of the later S-SSB occasion of the plurality of second S-SSB occasions is lower than the transmission priority of the earlier S-SSB occasion of the plurality of second S-SSB occasions.

[0159] Aspect 13: The method of aspect 10, wherein the plurality of second S-SSB occasions are associated with a starting point, wherein a previous second S-SSB occasion of the plurality of second S-SSB occasions that occurs prior to the starting point has a first transmission priority, and wherein a subsequent second S-SSB occasion of the plurality of second S-SSB occasions that occurs after the starting point has one or more second transmission priorities that are lower than the first transmission priority.

[0160] Aspect 14: The method of aspect 13, wherein the one or more second transmission priorities decrease over time relative to the starting point.

[0161] Aspect 15: The method of any of aspects 1-14, wherein performing the communication associated with the second set of S-SSB occasions according to the priority information further comprises: transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication based at least in part on an index of a second S-SSB occasion of the second set of S-SSB occasions and a retransmission number index of a physical sidelink shared channel communication.

[0162] Aspect 16: The method of aspect 15, wherein transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication further comprises: transmitting the S-SSB based at least in part on the index of the second S-SSB occasion being greater than the retransmission number index.

[0163] Aspect 17: The method of aspect 15, wherein transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication further comprises: transmitting the S-SSB or transmitting or receiving the physical sidelink shared channel communication based at least in part on at least one of a first index derived from the index of the second S-SSB occasion or a second index derived from the retransmission number index.

[0164] Aspect 18: The method of any of aspects 1-17, wherein performing the communication associated with the second set of S-SSB occasions according to the priority information further comprises: transmitting the S-SSB based at least in part on comparing a synchronization priority associated with a second S-SSB from a second UE to a synchronization priority of the S-SSB. For example, the one or more transmission priorities can include the synchronization priority. In other words, the synchronization priority can be used as a transmission priority to prioritize transmission of the S-SSB or the second S-SSB.

[0165] Aspect 19: The method of aspect 18, wherein the synchronization priority associated with the second S-SSB is increased according to a remaining number of time resources of the second set of S-SSB occasions.

[0166] Aspect 20: The method of aspect 18, wherein the transmission priority associated with the second S-SSB is based at least in part on a synchronization priority of the second S-SSB.

[0167] Aspect 21: The method of aspect 18, wherein the one or more transmission priorities are increased according to a remaining number of time resources of the second set of S-SSB occasions.

[0168] Aspect 22: An apparatus for wireless communication at a device, the apparatus comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of Aspects 1-21.

[0169] Aspect 23: 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 of one or more of Aspects 1-21.

[0170] Aspect 24: An apparatus for wireless communication, the apparatus comprising: at least one means for performing the method of one or more of Aspects 1-21.

[0171] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1-21.

[0172] Aspect 26: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1-21.

[0173] While the foregoing disclosure provides illustrations and descriptions of aspects, it is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or from practice of the aspects.

[0174] As used herein, the term “component” is intended to be broadly interpreted to include hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, or a combination of hardware and software. As used herein, the phrase “based on” is intended to be broadly interpreted to mean “based, at least in part, on.” As used herein, depending on the context, “satisfies a threshold” can refer to a value being 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, and the like. As used herein, a phrase referring to “at least one of’ a list of items means any combination of those items, including single members. As an 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.

[0175] Moreover, as used herein, the articles "a" and "an" are intended to include one or more items, and can be used interchangeably with "one or more." Furthermore, as used herein, the articles "the" and "said" are intended to include one or more items referenced, and can be used interchangeably with "the one or more" or "one or more." Also, as used herein, the terms "set" and "group" are intended to include one or more items (for example, related items, unrelated items, or a combination of related and unrelated items), and can be used interchangeably with "one or more." Where only one item is intended, the phrase "only one" or similar language will be used. Also, as used herein, the terms "has," "have," "having," or the like are intended to be open-ended terms that do not limit any elements to the presence of only a single instance of the element, but rather can be used in the context of one or more instances of the element. Further, as used herein, the term "or" is intended to be inclusive when used in the context of "one or the other" or "one or the other, but not both," unless explicitly indicated to the contrary (for example, when used in the context of "one of or the other of, but not both").

[0176] The various illustrative logics, logical blocks, modules, circuits and algorithm processes described in connection with the aspects disclosed herein can be implemented as electronic hardware, computer software, or combinations of both. The interchangeability of hardware and software has been described generally, in terms of functionality, and illustrated in the various illustrative components, blocks, modules, circuits and processes described herein. Whether such functionality is implemented in hardware or software depends on the particular application and design constraints imposed on the overall system.

[0177] The hardware and data processing apparatus used to implement the various illustrative logics, logical blocks, modules and circuits described in connection with the aspects disclosed herein can be implemented or performed with a general purpose single- or multi-chip processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor can be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. A processor also can be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. In some aspects, particular processes and methods can be performed by an apparatus specifically made or adapted for that purpose.

[0178] In one or more aspects, the described functionality may be implemented in hardware, digital electronic circuits, computer software, firmware, including the structures disclosed in this specification and their structural equivalents or any combination thereof. Aspects of the subject matter described in this specification may also be implemented as one or more computer programs (such as one or more modules of computer program instructions) encoded on a computer storage medium for execution by or control of the operation of a data processing apparatus.

[0179] If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted through a computer-readable medium. The processes of the methods or algorithms disclosed herein can be implemented in a processor-executable software module that can reside on a computer-readable medium. Computer-readable media include both computer storage media and communication media, with communication media including any medium capable of transferring a computer program from one place to another. Storage media can be any available medium accessible to a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disc storage devices, disk storage devices or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and is accessible to a computer. Furthermore, any connection may be appropriately referred to as a computer-readable medium. As used herein, disks and optical discs include compact optical discs (CDs), laser discs, optical discs, digital versatile optical discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs reproduce data optically using lasers. Combinations of media described herein should also be included within the scope of computer-readable media. Additionally, the operation of a method or algorithm may reside as one or any combination or group of code and instructions on a machine-readable medium and a computer-readable medium that may be incorporated into a computer program product.

[0180] Various modifications to the aspects described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the spirit or scope of this disclosure. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the widest scope consistent with this disclosure, the principles disclosed herein, and the novel features.

[0181] Additionally, those skilled in the art will readily recognize that the terms “upper” and “lower” are sometimes used to facilitate the description of the drawings and to indicate relative positions on a correctly oriented page corresponding to the orientation of the drawings, and may not reflect the correct orientation of any device as implemented.

[0182] Certain features described in the context of separate aspects in this specification can also be implemented in combination in a single aspect. Conversely, various features described in the context of a single aspect can also be implemented separately or in any suitable subcombination. Furthermore, while features can be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination and the claimed combination can be directed to a subcombination or variation of a subcombination.

[0183] Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring such an order, or that all illustrated operations be performed, to achieve desirable results. Additionally, the drawings can schematically depict one more example processes in the form of a flowchart. However, other operations that are not depicted can be incorporated in the example processes that are schematically illustrated. For example, one or more additional operations can be performed before, after, simultaneously with, or between any of the illustrated operations. In certain circumstances, multitasking and parallel processing can be advantageous. Moreover, the separation of various system components in the aspects described herein should not be understood as requiring such separation in all aspects, and it should be understood that the described program components and systems are generally integrable into a single software product or packaged into multiple software products. Additionally, other aspects are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results.

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: One or more memory units; and One or more processors, said one or more processors coupled to said one or more memories, said one or more processors being configured to: The configuration associated with receiving and transmitting a sidelink synchronization signal block (S-SSB) indicates a first S-SSB timing and a second S-SSB timing set, wherein the second S-SSB timing set is included in the UE's sidelink resource pool. Receive priority information indicating one or more transmission priorities for the second S-SSB timing set; as well as The communication associated with the second S-SSB timing set is performed based on the priority information.

2. The UE of claim 1, wherein, in order to perform the communication, the one or more processors are configured to: transmit the S-SSB on the second S-SSB timing set according to the priority information.

3. The UE of claim 1, wherein, in order to perform the communication, the one or more processors are configured to: transmit or receive the sidelink transmission on the second S-SSB timing set according to the transmission priority of the sidelink transmission and the priority information.

4. The UE of claim 1, wherein the priority information indicates a single priority value for all second S-SSB opportunities in the second S-SSB opportunity set.

5. The UE of claim 4, wherein the single priority value is applied to the first S-SSB timing and the second S-SSB timing set.

6. The UE of claim 4, wherein the single priority value is a first priority value, and wherein the first S-SSB timing is associated with a second priority value different from the first priority value.

7. The UE of claim 1, wherein the priority information indicates a first priority value and a second priority value, wherein the first priority value is applied to the second S-SSB timing set before the S-SSB is transmitted on the second S-SSB timing set, and the second priority value is applied to the second S-SSB timing set after the S-SSB is transmitted on the second S-SSB timing set.

8. The UE according to claim 7, wherein the priority information explicitly identifies the first priority value and the second priority value.

9. The UE of claim 7, wherein the priority information indicates the second priority value using an offset relative to the first priority value.

10. The UE of claim 1, wherein the second S-SSB timing set includes a plurality of second S-SSB timings, and wherein the priority information indicates a corresponding transmission priority for each of the plurality of second S-SSB timings.

11. The UE of claim 10, wherein the transmission priority of the later S-SSB timing among the plurality of second S-SSB timings is based at least in part on the transmission priority of the earlier S-SSB timing among the plurality of second S-SSB timings.

12. The UE of claim 11, wherein the transmission priority of the later S-SSB timing among the plurality of second S-SSB timings is lower than the transmission priority of the earlier S-SSB timing among the plurality of second S-SSB timings.

13. The UE of claim 10, wherein the plurality of second S-SSB timings are associated with a starting point, wherein a previous second S-SSB timing prior to the starting point has a first transmission priority, and wherein a subsequent second S-SSB timing occurring after the starting point has one or more second transmission priorities lower than the first transmission priority.

14. The UE of claim 13, wherein the one or more second transmission priorities decrease over time relative to the starting point.

15. The UE of claim 1, wherein, in order to perform the communication associated with the second S-SSB timing set according to the priority information, the one or more processors are configured to: transmit the S-SSB or transmit or receive the physical side link shared channel communication based at least in part on an index of the second S-SSB timing in the second S-SSB timing set and a retransmission count index of the physical side link shared channel communication.

16. The UE of claim 15, wherein, in order to transmit the S-SSB or to transmit or receive the physical side link shared channel communication, the one or more processors are configured to: transmit the S-SSB at least in part based on the index of the second S-SSB timing being greater than the retransmission count index.

17. The UE of claim 15, wherein, in order to transmit the S-SSB or transmit or receive the physical side link shared channel communication, the one or more processors are configured to: transmit the S-SSB or transmit or receive the physical side link shared channel communication based at least in part on at least one of a first index derived from the index of the second S-SSB timing or a second index derived from the retransmission count index.

18. The UE of claim 1, wherein, in order to perform the communication associated with the second S-SSB timing set according to the priority information, the one or more processors are configured to: transmit the S-SSB based at least in part on comparing the synchronization priority associated with the second S-SSB from the second UE with the synchronization priority of the S-SSB.

19. The UE of claim 18, wherein the synchronization priority associated with the second S-SSB is increased based on the remaining amount of time resources in the second S-SSB timing set.

20. The UE of claim 18, wherein the synchronization priority associated with the S-SSB is one of the one or more transmission priorities.

21. The UE of claim 18, wherein the synchronization priority of the S-SSB is reduced based on the remaining amount of time resources in the second S-SSB timing set.

22. A method for wireless communication performed by a user equipment (UE), the method comprising: The configuration associated with receiving and transmitting a sidelink synchronization signal block (S-SSB) indicates a first S-SSB timing and a second S-SSB timing set, wherein the second S-SSB timing set is included in the UE's sidelink resource pool. Receive priority information indicating one or more transmission priorities for the second S-SSB timing set; as well as The communication associated with the second S-SSB timing set is performed based on the priority information.

23. The method of claim 22, wherein performing the communication further comprises: The S-SSB is sent on the second S-SSB timing set according to the priority information.

24. The method of claim 22, wherein performing the communication further comprises: Based on the transmission priority of the sidelink transmission and the priority information, the sidelink transmission is transmitted or received on the second S-SSB timing set.

25. The method of claim 22, wherein the priority information indicates a single priority value for all second S-SSB opportunities in the second S-SSB opportunity set.

26. The method of claim 25, wherein the single priority value is applied to the first S-SSB timing and the second S-SSB timing set.

27. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions, which, when executed by one or more processors of a user equipment (UE), cause the UE to: The configuration associated with receiving and transmitting a sidelink synchronization signal block (S-SSB) indicates a first S-SSB timing and a second S-SSB timing set, wherein the second S-SSB timing set is included in the UE's sidelink resource pool. Receive priority information indicating one or more transmission priorities for the second S-SSB timing set; as well as The communication associated with the second S-SSB timing set is performed based on the priority information.

28. The non-transitory computer-readable medium of claim 27, wherein the one or more instructions that cause the UE to execute the communication cause the UE to: transmit the S-SSB on the second S-SSB timing set according to the priority information.

29. An apparatus for wireless communication, the apparatus comprising: Components for receiving configurations associated with a transmit sidelink synchronization signal block (S-SSB), wherein the configuration indicates a first S-SSB timing and a second S-SSB timing set, and wherein the second S-SSB timing set is included in the sidelink resource pool of the device; A component for receiving priority information indicating one or more transmission priorities for the second S-SSB timing set; and A component for performing communication associated with the second S-SSB timing set based on the priority information.

30. The apparatus of claim 29, wherein the component for performing the communication further comprises: A component for sending the S-SSB on the second S-SSB timing set according to the priority information.

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