Multi-slot and multi-transport block resource allocation in unlicensed sidelink

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may trigger candidate resource selection for a plurality of sidelink processes associated with a plurality of transport blocks (TBs). The UE may perform the candidate resource selection to identify a set of multi-slot candidate resources for transmitting the plurality of TBs over a plurality of consecutive slots. The UE may select a multi-slot resource from the set of multi-slot candidate resources for transmitting the plurality of TBs over the plurality of consecutive slots. Numerous other aspects are described.

Description

Technical Field

[0001] Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus associated with multi-slot and multi-transport block resource allocation in an unlicensed sidelink. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support 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 (3GPP).

[0003] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. The UE may communicate with the network nodes via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0004] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0005] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include triggering candidate resource selection for multiple sidelink processes associated with multiple transport blocks (TBs). The method may include performing candidate resource selection to identify a set of multi-slot candidate resources for transmitting multiple TBs over multiple consecutive time slots. The method may include selecting a multi-slot resource for transmitting multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources.

[0006] Some aspects described herein relate to a UE for wireless communication. The UE may include: a memory; and one or more processors coupled to the memory. The one or more processors may be configured to trigger candidate resource selection for multiple side link processes associated with multiple TBs. The one or more processors may be configured to perform candidate resource selection to identify a set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots. The one or more processors may be configured to select a multi-slot resource for sending multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources.

[0007] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to trigger candidate resource selection for multiple side link processes associated with multiple TBs. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform candidate resource selection to identify a set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots. The instruction set, when executed by one or more processors of the UE, may cause the UE to select a multi-slot resource for sending multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources.

[0008] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for triggering candidate resource selection for multiple sidelink processes associated with multiple TBs. The apparatus may include components for performing candidate resource selection to identify a set of multi-slot candidate resources for transmitting multiple TBs over multiple consecutive time slots. The apparatus may include components for selecting a multi-slot resource for transmitting multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources.

[0009] The various 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 fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0010] The features and technical advantages of examples according to the present disclosure have been outlined quite broadly above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0011] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to fully understand the above-mentioned features of the present disclosure, a more specific description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0013] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0014] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0015] Figure 3 is a diagram illustrating an example of side link communication according to the present disclosure.

[0016] Figure 4 is a diagram illustrating an example of side link communications in different coverage scenarios according to the present disclosure.

[0017] Figure 5 is a diagram illustrating an example of side link resource selection and resource reservation according to the present disclosure.

[0018] FIG. 6A to FIG. 6D is a diagram illustrating an example associated with multiple slots (multi-slot) and multiple transport blocks (multi-TB) resource allocation in an unlicensed side link according to the present disclosure.

[0019] Figure 7 is a diagram illustrating example procedures associated with multi-slot and multi-TB resource allocation in an unlicensed side link in accordance with the present disclosure.

[0020] Figure 8 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0021] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functions, or structures and functions in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0022] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0023] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technologies (RATs), various aspects of the present disclosure may be applicable to other RATs, such as 3G RATs, 4G RATs, and / or post-5G RATs (e.g., 6G).

[0024] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, as well as other examples. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (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 node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0025] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0026] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0027] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed 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" may refer to a CU, a DU, a RU, a near real-time (near-RT) RAN intelligent controller (RIe), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions, such as those described herein in conjunction with the network node 110. In some aspects, the term "base station" or "network node" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of a plurality of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions, but not another base station function. In this way, a single device may include more than one base station.

[0028] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communication between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0029] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0030] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0031] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, an access terminal, a terminal, a mobile station and / or a subscriber unit. UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, 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 and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node and / or any other suitable device configured to communicate via a wireless or wired medium.

[0032] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0033] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0034] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0035] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may 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). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as a "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as a "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU).

[0036] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, so the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6GHz-71GHz), FR4 (52.6GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0037] With the above examples in mind, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0038] In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may trigger candidate resource selection for multiple sidelink processes associated with multiple transport blocks (TBs); perform candidate resource selection to identify a set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots; and select a multi-slot resource for sending multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0039] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0040] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 232. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0041] At the network node 110, the transmit processor 220 may receive data intended for the UE 120 (or a set of UEs 120) from the data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQI) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a set of corresponding antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0042] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may 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 to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0043] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0044] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or antennas coupled to one or more transmit and / or receive components (such as antennas). Figure 2 One or more antenna elements of one or more components).

[0045] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, reference FIG. 6A to FIG. 6D , Figure 7 and / or Figure 8 ) or any aspects of any of the methods described herein.

[0046] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication and / or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform operations described herein (e.g., with reference to FIG. 6A to FIG. 6D , Figure 7 and / or Figure 8) or any aspects of any of the methods described herein.

[0047] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with multi-slot and multi-TB resource allocation in the unlicensed side link, as described in more detail elsewhere herein. Figure 2 Any other component of the Figure 7 10 and / or operations of process 700 and / or other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion and / or interpretation), may cause the one or more processors, UE 120 and / or network node 110 to perform or direct, for example, Figure 7 The process 700 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0048] In some aspects, the UE 120 includes a component for triggering candidate resource selection for multiple sidelink processes associated with multiple TBs; a component for performing candidate resource selection to identify a set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots; and / or a component for selecting a multi-slot resource for sending multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources. The components for the UE 120 to perform the operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0049] Although Figure 2 The blocks in the 200 and 210 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0050] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0051] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed 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, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0052] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may 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 may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

[0053] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may 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 known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0054] Figure 3 is a diagram illustrating an example 300 of sidelink communications according to the present disclosure.

[0055] like Figure 3 As shown, the first UE 305-1 can communicate with the second UE 305-2 (and one or more other UEs 305) via one or more side link channels 310. UEs 305-1 and 305-2 can communicate using one or more side link channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication and / or V2P communication) and / or mesh networks. In some aspects, UE 305 (e.g., UE 305-1 and / or UE 305-2) may correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more side link channels 310 may use a PC5 interface and / or may operate in a high frequency band (e.g., a 5.9 GHz band). Additionally or alternatively, UE 305 may use global navigation satellite system (GNSS) timing to synchronize the timing of a transmit time interval (TTI) (e.g., a frame, subframe, time slot, or symbol).

[0056] like Figure 3 As further shown, the one or more sidelink channels 310 may include a physical sidelink control channel (PSCCH) 315, a physical sidelink shared channel (PSSCH) 320, and / or a physical sidelink feedback channel (PSFCH) 325. The PSCCH 315 may be used to communicate control information, similar to a physical downlink control channel (PDCCH) and / or a physical uplink control channel (PUCCH) used for cellular communication with the base station 110 via an access link or access channel. The PSSCH 320 may be used to communicate data, similar to a physical downlink shared channel (PDSCH) and / or a physical uplink shared channel (PUSCH) used for cellular communication with the base station 110 via an access link or access channel. For example, the PSCCH 315 may carry sidelink control information (SCI) 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, and / or space resources), wherein a transport block (TB) 335 may be carried on the PSSCH 320. The TB 335 may include data. The PSFCH 325 may be used to communicate sidelink feedback 340, such as hybrid automatic repeat request (HARQ) feedback (eg, acknowledgement or negative acknowledgement (ACK / NACK) information), transmit power control (TPC), and / or scheduling request (SR).

[0057] Although shown on PSCCH 315, in some aspects, SCI 330 may include multiple communications in different levels, such as a first level SCI (SCI-1) and a second level SCI (SCI-2). SCI-1 may be sent on PSCCH 315. SCI-2 may be sent on PSSCH 320. SCI-1 may include, for example, an indication of one or more resources (e.g., time resources, frequency resources, and / or space resources) on PSSCH 320, information for decoding sidelink communications on PSSCH, a quality of service (QoS) priority value, a resource reservation period, a PSSCH DMRS pattern, an SCI format for SCI-2, a beta offset for SCI-2, a number of PSSCH DMRS ports, and / or a modulation and coding scheme (MCS). SCI-2 may include information associated with data transmission on PSSCH 320, such as a HARQ process ID, a new data indicator (NDI), a source identifier, a destination identifier, and / or a channel state information (CSI) report trigger.

[0058] In some aspects, one or more side link channels 310 may use a resource pool. For example, a scheduling assignment (e.g., included in SCI 330) may be sent in a subchannel across time using specific resource blocks (RBs). In some aspects, data transmissions associated with a scheduling assignment (e.g., on PS SCH 320) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, the scheduling assignment and the associated data transmissions are not sent on adjacent RBs.

[0059] In some aspects, the UE 305 may operate using a first sidelink transmission mode (e.g., mode 1, which may be referred to herein as a centralized scheduling mode or a network controlled scheduling mode), wherein resource selection and / or scheduling is performed by the base station 110. For example, in the centralized or network controlled scheduling mode, the UE 305 may receive a grant for sidelink channel access and / or scheduling from the base station 110 (e.g., in downlink control information (DCI) or in a radio resource control (RRC) message, such as for a configured grant). In some aspects, the UE 305 may operate using a second sidelink transmission mode (e.g., mode 2, which may be referred to herein as a distributed scheduling mode or an autonomous scheduling mode), wherein resource selection and / or scheduling is performed by the UE 305 (e.g., rather than the base station 110). In some aspects, the UE 305 may perform resource selection and / or scheduling in the distributed or autonomous scheduling mode by sensing channel availability for transmission. For example, UE 305 may measure RSSI parameters associated with various side link channels (e.g., sidelink-RSSI (S-RSSI) parameters), may measure RSRP parameters associated with various side link channels (e.g., PSSCH-RSRP parameters), and / or may measure RSRQ parameters associated with various side link channels (e.g., PSSCH-RSRQ parameters), and may select a channel for sending side link communications based at least in part on the measurements.

[0060] Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling in a distributed or autonomous scheduling mode using the SCI 330 received in the PSCCH 315, which may indicate occupied resources and / or channel parameters. Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling by determining a channel busy rate (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating a maximum number of resource blocks that the UE 305 may use for a particular set of subframes).

[0061] In a distributed or autonomous scheduling mode in which resource selection and / or scheduling is performed by the UE 305, the UE 305 may generate sidelink grants and may send these grants in the SCI 330. The sidelink grant may indicate, for example, one or more parameters (e.g., transmission parameters) to be used for an upcoming sidelink transmission, such as one or more resource blocks to be used for an upcoming sidelink transmission on the PSSCH 320 (e.g., for TB 335), one or more subframes to be used for an upcoming sidelink transmission, and / or an MCS to be used for an upcoming sidelink transmission. In some aspects, the UE 305 may generate a sidelink grant that indicates one or more parameters for semi-persistent scheduling (SPS), such as the periodicity of the sidelink transmission. Additionally or alternatively, the UE 305 may generate a sidelink grant for event-driven scheduling (such as for an on-demand sidelink message).

[0062] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0063] Figure 4 4 is a diagram illustrating examples of side link communications in different coverage scenarios 400, 410, 420 according to the present disclosure. For example, Figure 4 An example of sidelink communication in an in-coverage scenario 400, an example of sidelink communication in a partial coverage scenario 410, and an example of sidelink communication in an out-of-coverage scenario 420 are illustrated.

[0064] like Figure 4 As shown in FIG. 4 , in an in-coverage scenario 400, a transmitter (Tx) / receiver (Rx) UE 402 and an Rx / Tx UE 404 may communicate with each other via a side link (eg, a PC5 interface), as described above in conjunction with Figure 3 As described, the base station 110 can communicate with the Tx / Rx UE 402 via a first access link and communicate with the Rx / Tx UE 404 via a second access link (e.g., a corresponding Uu interface). As shown in the figure, in the in-coverage scenario 400, the Tx / Rx UE 402 and the Rx / Tx UE 404 are both within the coverage of the base station 110, so that the sidelink communication between the Tx / Rx UE 402 and the Rx / Tx UE 404 can be performed in a centralized or network-controlled scheduling mode (e.g., mode 1) in which the base station 110 schedules the sidelink resources, or in a distributed or autonomous scheduling mode (e.g., mode 2) in which the UE 402 / 404 autonomously selects the sidelink resources from the configured sidelink resource pool based on a channel sensing mechanism.

[0065] like Figure 4As further shown, in the in-coverage scenario 410, the Tx / Rx UE 402 is within the coverage area of ​​the base station 110, and the Rx / Tx UE 404 is outside the coverage area of ​​the base station. In the in-coverage scenario 410, the Tx / Rx UE 402 and the Rx / Tx UE 404 may communicate with each other via a side link (e.g., a PC5 interface), and the base station 110 may communicate with the Tx / Rx UE 402 via an access link (e.g., a Uu interface). Therefore, in the in-coverage scenario 410, the base station 110 may enable a centralized scheduling mode or a distributed scheduling mode for the Tx / Rx UE 402 within the coverage area of ​​the base station 110, and the Rx / Tx UE 404 outside the coverage may only use the distributed scheduling mode. In addition, in the out-of-coverage scenario 420, the Tx / Rx UE 402 and the Rx / Tx UE 404 are outside the coverage area of ​​any base station. Therefore, in the out-of-coverage scenario 420 , only the distributed scheduling mode may be used to implement the sidelink communication between the Tx / RxUE 402 and the Rx / TxUE 404 .

[0066] As described herein, when a UE is to perform a sidelink transmission, the sidelink transmission may be performed according to one or more sidelink processes and / or using one or more transmission parameters that are configured to simplify the channel access scheme followed by the sidelink UE in a centralized or network-controlled scheduling mode or in a distributed or autonomous scheduling mode. In general, all communication parameters (e.g., transmission parameters such as transmit power and / or DMRS pattern, and process parameters indicating whether certain sidelink features and / or processes are enabled or disabled) are centrally selected or otherwise controlled by the network in a centralized scheduling mode (e.g., Mode 1). For example, in a centralized scheduling mode, the base station is aware of congestion, traffic conditions, interference, load, and / or other factors that may affect the performance of the base station and UEs within the coverage area of ​​the base station, and the base station configures the sidelink communication parameters accordingly to optimize overall sidelink and / or cellular performance and / or per-UE performance.

[0067] On the other hand, in the distributed scheduling mode, there are various sidelink communication parameters that are independently or autonomously selected by the transmitting UE. For example, in the distributed scheduling mode, the sidelink communication parameters may include globally configured parameters with fixed values ​​(e.g., the number of subchannels, the bandwidth of the subchannels and / or the time slot duration, etc.) and locally configured parameters selected by the transmitting UE. For example, the locally configured parameters may include MCS, DMRS mode, transmit power, the maximum number of retransmissions for a given TB, multicast option 1 NACK distance (e.g., the distance at which the receiving UE can transmit a NACK for the sidelink transmission) and / or β parameters (e.g., related to the decoding associated with the transmitted waveform), etc. In some cases, the transmitting UE may independently select the locally configured parameters, which may be restricted to a set of allowed or permitted values, wherein the locally configured parameters have values ​​selected by the UE in order to optimize the performance of the UE with respect to one or more metrics that are generally application dependent. For example, the transmitting UE may select the maximum number of MCS and HARQ retransmissions to maximize packet reliability, maximize throughput and / or minimize latency, etc. In addition, the sending UE may select locally configured parameters based on a pre-configured scheme (e.g., using default values ​​that may be application-dependent, such as default values ​​for a Basic Safety Message (BSM)) and / or using more sophisticated techniques based on real-time (e.g., current or instantaneous) measurements (such as CBR or perceived congestion on a sidelink channel).

[0068] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0069] Figure 5 is a diagram illustrating an example 500 of sidelink resource selection and resource reservation according to the present disclosure. In some aspects, as described herein, example 500 relates to sidelink resource selection and resource reservation techniques that can be used in a resource allocation mode (e.g., sidelink resource allocation mode 2) in which sidelink resource selection and / or scheduling is performed by a transmitting UE and / or a receiving UE.

[0070] For example, in sidelink resource allocation mode 2 (which may also be referred to as autonomous resource selection mode), a UE communicating on a sidelink may perform exhaustive sidelink monitoring using a resource selection process in which time and frequency resources for sidelink communication are randomly selected from a set of candidate resources identified by sensing and exclusion. For example, as described herein, exhaustive sidelink monitoring may include decoding SCI for all potential transmissions in all time slots and subchannels within a resource pool. The decoded SCI typically includes SCI-1 transmitted on the PSCCH, which is blindly decoded by all UEs, and the decoded SCI may also include SCI-2 transmitted on the PSSCH (e.g., if SCI-1 is decoded). Therefore, for reception purposes, the UE may perform exhaustive sidelink monitoring in all sidelink time slots and subchannels to decode the SCI for potential transmissions to be received by the UE. Additionally or alternatively, for transmission purposes, the UE may perform exhaustive sidelink monitoring and sensing in all time slots and subchannels to identify resources available for sidelink transmissions.

[0071] For example, Figure 5 As shown, and by reference numeral 510, a UE performing a resource selection process in sidelink resource allocation mode 2 may exhaustively monitor all time slots and subchannels associated with the PSCCH during a sensing window for one or more SCI transmissions that reserve resources for an upcoming sidelink transmission. Thus, the UE may decode any SCI transmissions detected during the sensing window to determine resources being occupied by other UEs in the future (e.g., in a resource selection window following the sensing window), and may exclude the UE from using resources being occupied by other UEs within the resource selection window. For example, in some aspects, the UE may measure the RSRP associated with one or more SCI transmissions decoded within the sensing window, and may further determine resources reserved by the SCI transmissions within the resource selection window.

[0072] like Figure 5 As further shown, and by reference numeral 520, the measured RSRP associated with the decoded SCI within the sensing window may be projected onto the resources reserved by the decoded SCI within the resource selection window. Figure 5 As shown, as part of the resource selection and reservation process, when performing PSSCH monitoring and RSRP measurement during the sensing window, the UE may monitor the RSRP from the first UE (shown as UE 1 ), and the UE may further decode and measure the RSRP associated with the first SCI transmission from the second UE (shown as UE 2). Thus, the UE may determine the time and frequency resources reserved by the first SCI transmission and the second SCI transmission, and may project the measured RSRP associated with the first SCI transmission and the second SCI transmission onto the corresponding time and frequency resources reserved by the first SCI transmission and the second SCI transmission within the resource selection window (e.g., the SCI transmission and the PSSCH transmission scheduled by the SCI transmission may be expected to have the same or similar RSRP).

[0073] In some aspects, within a resource selection window, resources associated with an RSRP that fails to meet (e.g., is below) a threshold are considered available, where the threshold may be based at least in part on a transmit priority associated with the transmitting UE and a receive priority indicated in a decoded SCI. Thus, in the event that a proportion of available resources in the resource selection window fails to meet (e.g., is below) a threshold (such as 20% or another suitable value), the RSRP threshold may be increased (e.g., by three (3) decibels or another suitable value) and the candidate resource identification process may be repeated. Alternatively, in the event that a proportion of available resources in the resource selection window meets (e.g., is equal to or exceeds) a threshold, the available resources in the resource selection window form a candidate resource set, which the UE reports to higher layers for random resource selection. The UE may then perform sidelink transmission using one or more available resources randomly selected from the candidate resource set.

[0074] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0075] In some cases, a UE may communicate on a side link via an unlicensed spectrum, where access to the unlicensed channel is subject to a channel access mechanism. For example, in a shared or unlicensed band, a transmitting device (e.g., a Tx UE) may contend for channel access with other devices before transmitting (e.g., transmitting to an Rx UE) on a shared or unlicensed channel to reduce and / or prevent conflicts on the shared or unlicensed channel. In order to contend for channel access, the transmitting device may perform a channel access procedure for shared or unlicensed band channel access, such as a listen-before-talk (or listen-before-transmit) (LBT) procedure or another type of channel access procedure. A channel access procedure may be performed to determine whether a physical channel (e.g., a radio resource of a channel) is free for use or busy (e.g., being used by another wireless communication device (e.g., a UE, an IoT device, or a wireless local area network (WLAN) device, etc.)). The channel access process may include sensing or measuring a physical channel (e.g., performing RSRP measurements, detecting energy levels, or performing another type of measurement) during a channel access gap (which may also be referred to as a contention window (CW)), and determining whether a shared or unlicensed channel is idle or busy based at least in part on a signal sensed or measured on the physical channel (e.g., based at least in part on whether the measurement satisfies a threshold). If the transmitting device determines that the channel access process is successful, the transmitting device may perform one or more transmissions on the shared or unlicensed channel during a transmission opportunity, which may extend a channel occupancy time (COT).

[0076] In general, when a Tx UE acquires or otherwise obtains a COT that allows the Tx UE to transmit one or more sidelink communications on an unlicensed channel (e.g., after performing a successful LBT procedure), the Tx UE may attempt to maximize the use of the COT and avoid intermittent sidelink transmissions that would otherwise require the Tx UE to perform another successful channel access procedure (e.g., by transmitting multiple TBs over multiple consecutive time slots during the COT). For example, since there is a risk that LBT completion may be delayed if the medium is sensed to be busy (e.g., due to competition for channel access from other sidelink UEs, WLAN devices, or other devices attempting to communicate over an unlicensed channel), the sidelink throughput may deteriorate as the number of channel access procedures for a given number of transmissions increases. In addition, LBT delays may potentially lead to LBT failures, which are reported from the physical (PHY) layer that performs the LBT procedure to the medium access control (MAC) layer when the Tx UE cannot meet the granted transmissions (e.g., due to the LBT delay, the Tx UE cannot perform the granted transmissions before the deadline). In such cases, the Tx UE needs to obtain a new sidelink grant (eg, by performing another resource selection), which further reduces the sidelink throughput.

[0077] In addition, in mode 2 sidelink communication, where the sidelink resources are provided by the Tx UE (e.g., using the above reference Figure 5 The sidelink resource selection and resource reservation techniques described herein are autonomously selected, and the sidelink resource selection is usually performed per TB, which does not match the requirements of performing a successful LBT process. For example, after the Tx UE has performed a successful LBT process and acquired the COT using the resources selected to send the first TB, since the Tx UE has not yet selected the resources for sending the additional TBs, the Tx UE may not be ready to perform the continuous transmission of the additional TBs during the COT. Therefore, some aspects further described in detail herein relate to techniques for implementing mode 2 sidelink resource selection and resource reservation for multiple consecutive time slots to enable the transmission of multiple TBs on an unlicensed sidelink channel within the COT duration.

[0078] For example, in some aspects, based on mode 2 sidelink resource selection and resource reservation, a Tx UE communicating on a sidelink may support multiple consecutive time slot transmissions (MCSt) on an unlicensed sidelink channel. For example, in some aspects, a Tx UE may include a MAC layer (which may be referred to herein as a MAC entity), which may trigger a PHY layer of the UE to identify a set of candidate resources (e.g., a set of multi-slot candidate resources) for MCSt based on one or more sets of resource selection parameters. The PHY layer may then identify the set of multi-slot candidate resources (e.g., by adjusting an RSRP threshold for identifying available candidate resources based on the resource selection parameters), wherein the multi-slot candidate resources may generally include multiple single-slot resources that are consecutive in time. Therefore, the PHY layer may then report the set of multi-slot candidate resources to the MAC entity, which may select the multi-slot candidate resources from the set of multi-slot candidate resources reported by the PHY layer based on one or more policies. In this way, the Tx UE may transmit multiple TBs using the selected multi-slot candidate resources during the COT, which may reduce the number of LBT processes required to be performed to transmit multiple TBs and improve throughput and / or latency on the unlicensed sidelink channel.

[0079] FIG. 6A to FIG. 6D 6 is a diagram illustrating an example 600 associated with multi-slot and multi-TB resource allocation in an unlicensed side link according to the present disclosure. Fig. 6AAs shown, example 600 includes a Tx UE (e.g., UE 120, UE 305, UE 402, or UE 404) and an Rx UE (e.g., UE 120, UE 305, UE 402, or UE 404) communicating with each other via a side link (e.g., PC5 interface) channel. In some aspects, as described herein, the Tx UE and the Rx UE may communicate using Mode 2 side link resource selection and resource reservation, and the side link channel may be an unlicensed channel subject to a channel access mechanism (e.g., LBT). In addition, as described herein, Fig. 6A As shown, the Tx UE may include a MAC entity and a PHY layer, which may perform mode 2 sidelink resource selection and resource reservation procedures to support multi-slot and multi-TB sidelink communications.

[0080] like Fig. 6A As shown, and by reference numeral 605, the MAC entity of the UE may trigger the PHY layer to perform multi-slot resource selection for multiple sidelink processes. For example, in some aspects, the MAC entity of the TxUE may include a sidelink HARQ entity for transmitting on a sidelink shared channel (e.g., PSSCH), wherein the sidelink HARQ entity may maintain a set of parallel sidelink processes. In general, each sidelink process is associated with a HARQ buffer (e.g., which processes one TB at a time), and the MAC entity may create a single TB, single slot grant by triggering the PHY layer to perform resource selection for each sidelink process. For example, in the case where the sidelink process is configured for the transmission of a single MAC protocol data unit (PDU), the MAC entity may trigger the PHY layer to select a single slot resource for one TB (create a sidelink grant). Alternatively, in the case where the sidelink process is configured for the transmission of multiple MAC PDUs, the MAC entity may trigger the PHY layer to select a single slot resource projected onto a given periodicity to serve different TBs that are sufficiently spaced apart in time. Therefore, in order to enable resource selection for multiple TBs over multiple consecutive time slots (e.g., within the COT duration), the MAC entity may trigger the PHY layer to identify a set of suitable multi-slot candidate resources for multiple sidelink processes. For example, because multiple sidelink processes can each process one TB at a time (e.g., in a manner similar to uplink access link communications, where the UE's MAC entity includes a HARQ entity that maintains multiple parallel HARQ processes, each of the multiple parallel HARQ processes supporting a single TB at a time), the resource selection performed by the PHY layer for multiple sidelink processes can support one or more TBs.

[0081] like Fig. 6AAs further shown in and by reference numeral 610, the PHY layer may identify a set of multi-slot candidate resources based on multi-slot resource selection parameters provided by the MAC entity. For example, in some aspects, the sidelink service may include content that is segmented into multiple MAC PDUs that may have the same or similar parameters (e.g., the same or similar priority, remaining packet delay budget (PDB), number of subchannels, and / or reservation period). In such cases, multiple MAC PDUs with the same parameterization may be available at the MAC entity at a given time, and the MAC entity may provide a single set of resource selection parameters to the PHY layer, which is used to identify the set of multi-slot candidate resources for multiple sidelink processes. In addition, the resource selection parameters provided by the MAC entity to the PHY layer may indicate the number of TBs or the number of sidelink processes N. 1 , and / or the number N of consecutive time slots used to identify available candidate resources 2 , where N 2 ≥N 1 Alternatively, in some aspects, the MAC entity may provide multiple sets of resource selection parameters to the PHY layer, where each set of resource selection parameters may indicate a transmission priority (prio TX ), the remaining PDB, the number of subchannels (L subCH ), reservation period (P rsvp_Tx ) and / or the number of time slots N for a multi-slot resource 2 In some aspects, where the MAC entity provides multiple sets of resource selection parameters (eg, for different sidelink processes or TBs), the MAC entity may provide up to N 1 Set resource selection parameters (e.g., up to the number of sidelink processes or TBs associated with multi-slot resource selection).

[0082] In some aspects, the multi-slot resource selection triggered by the MAC entity is communicated to the PHY layer with multiple sets of resource selection parameters (e.g., up to N 1 In some aspects, when multiple resource selection parameters are associated with multiple groups of resource selection parameters, the MAC entity may provide a subset of the multiple groups of resource selection parameters to the PHY layer. For example, in some aspects, the subset of the multiple groups of resource selection parameters may include a compressed or combined set of resource selection parameters. In such cases, one or more rules may be defined to indicate how the PHY layer interprets the compressed or combined set of resource selection parameters. For example, in some aspects, each resource selection parameter in the compressed or combined set of resource selection parameters (e.g., transmission priority, remaining PDBs, number of subchannels, reservation period, and / or number of time slots) may have a value that applies to all resource selection parameters in the multiple groups of resource selection parameters, or a separate value may be provided for each TB. Additionally or alternatively, the value of the resource selection parameter may define a condition or criterion (e.g., a minimum value or a maximum value) for multi-slot resource selection. For example, referring to Figure 6B , reference numeral 615-1 depicts a first example where multiple TBs share the same resource selection parameters. Thus, in the first example, for four (4) time slots (N 2 =4) performs multi-slot resource selection and selects the same number of subchannels for each time slot. In the second example, as depicted by reference numeral 615-2, each TB may be associated with a different number of subchannels (L subCH，1 , L subCH，2 and L subCH，3 ). For example, as shown by reference numeral 615-2, three (3) side link processes (N 1 =3) performs resource selection, each side link process is associated with one (1) time slot (N 2，i =1), and a different number of subchannels are selected for the sidelink process associated with each corresponding time slot. In a third example, as depicted by reference numeral 615-3, for three (3) sidelink processes (N 1 =3) performs resource selection, each sidelink process is associated with two (2) time slots (for each i is N 2，i =2) and selects a different number of subchannels (L) for the two time slots associated with each corresponding side link process subCH，1 , L subCH，2 and L subCH，3 ). In other examples, different sidelink processes may be associated with the same or different numbers of time slots, the same or different priorities, etc.

[0083] In some aspects, as described herein, the PHY layer can identify the set of multi-slot candidate resources by extending the single-slot sidelink resource selection and resource reservation techniques in the time domain. For example, when the PHY layer performs single-slot sidelink resource selection and resource reservation, a partial overlap of a single-slot resource with a reservation from another UE results in a test based on an RSRP threshold having a value that depends on two priorities associated with conflicting transmissions. In addition, the RSRP measurement associated with the overlapping reservation depends only on the PSCCH or PSSCH DMRS associated with the reservation transmission of the other UE. For example, referring to Figure 6C, reference numeral 620-1 depicts a single time slot resource comprising two subchannels (shown by the gray shaded area) that overlaps with a subchannel reservation from another UE (shown by the white area within the gray shaded area). In the example depicted by reference numeral 620-1, the PHY layer may determine an RSRP threshold based on the respective priorities of the transmission for which the resource is being selected and the transmission associated with the overlapping reservation of the other UE, and if the RSRP measurement of the overlapping reservation meets (e.g., equals or exceeds) the RSRP threshold, the single time slot resource corresponding to the gray shaded area may be excluded from the available (candidate) resources for outgoing transmissions. In addition, in the presence of multiple overlapping reservations, multiple tests may be triggered and performed independently for each overlapping reservation, and a single failure may cause the single time slot resource to be excluded from the candidate resources for outgoing transmissions. For example, reference numeral 620-1 depicts a single time slot resource comprising two subchannels (shown by the gray shaded area) that overlaps with a subchannel reservation from another UE. Figure 6C , reference numeral 620-2 depicts an example of triggering two tests based on potential single-slot candidate resources (shown by white and cross-hatched areas) that overlap with two reservations of other UEs.

[0084] In some aspects, in order to extend the single-slot side link resource selection and resource reservation techniques in the time domain, the PHY layer may identify a set of multi-slot candidate resources including a plurality of consecutive single-slot candidate resources, wherein the multi-slot candidate resources may be retained in the set of multi-slot candidate resources provided to the MAC entity based on retaining each single-slot resource included in the multi-slot candidate resources. Alternatively, the multi-slot candidate resources may be removed or excluded from the set of multi-slot candidate resources provided to the MAC entity based on excluding any single-slot resource included in the multi-slot candidate resources. In either case, the test performed by the PHY layer to determine whether to exclude or retain the single-slot resources included in the multi-slot candidate resources may be the same as the test that the PHY layer will perform to determine whether to exclude or retain the single-slot resources when performing single-slot side link resource selection and resource reservation. In addition, as described herein, the test performed to determine whether to exclude or retain the multi-slot candidate resources may work in a case where different TBs to be sent using the multi-slot resources are associated with different priorities (e.g., the test may be performed per single-slot resource).

[0085] For example, refer to Figure 6C, reference number 625-1 depicts a first scenario, in which the multi-slot candidate resources include a first single-slot resource with a first priority (black shaded area) and a second single-slot resource with a second priority (gray shaded area). As further shown in the figure, the first single-slot resource partially overlaps with a first reservation of another UE with the first priority (shown by a white area with p=1) and a second reservation of another UE with the second priority (shown by a gradient shaded area with p=2), and the second single-slot resource partially overlaps with two reservations of other UEs with the second priority (shown by gradient shaded and cross-hatched areas with p=2).

[0086] In the example shown by reference number 625-1, the PHY layer may determine whether to retain or exclude the multi-slot candidate resources by looping across the single-slot resources included in the multi-slot candidate resources, then looping across the overlapping reservations in each single-slot resource, and determining whether to retain or exclude each single-slot resource. For example, as shown, the PHY layer may determine a first RSRP threshold for a first test (Test 1) based on the priority of the TB associated with the first single-slot resource and the priority of the first overlapping reservation in the first single-slot resource, and may determine a second RSRP threshold for a second test (Test 2) based on the priority of the TB associated with the first single-slot resource and the priority of the second overlapping reservation in the first single-slot resource. As further shown, the PHY layer may similarly determine the RSRP threshold to test each overlapping reservation in the second single-slot resource in a similar manner.

[0087] Therefore, the PHY layer may test the first overlapping resource and the second overlapping resource in the first single-slot resource based on the corresponding RSRP threshold, and may reserve the first single-slot resource based on the RSRP measurement of the first overlapping reservation and the second overlapping reservation failing to meet the corresponding RSRP threshold. Alternatively, the PHY layer may exclude the first single-slot resource based on the RSRP measurement of the first overlapping reservation and / or the second overlapping reservation meeting the applicable RSRP threshold. In addition, a similar method may be performed for the two overlapping reservations in the second single-slot resource. In this example, the multi-slot candidate resource may be retained in the group of multi-slot candidate resources only if both the first single-slot resource and the second single-slot resource are reserved, or the multi-slot candidate resource may be excluded from the group of multi-slot candidate resources if the first single-slot resource is excluded and / or the second single-slot resource is excluded.

[0088] As another example, as shown in reference number 625-2, the technique for determining whether to retain or exclude multi-slot candidate resources can be optimized by cycling across single-slot resources, cycling across priorities associated with overlapping reservations, and identifying the overlapping reservation with the highest RSRP measurement for each priority within the single-slot resource. Therefore, for each priority, the PHY layer can only test the overlapping reservation associated with the highest RSRP measurement, because if the test associated with the overlapping reservation with the highest RSRP measurement passes, the test for other reservations with lower RSRP measurements can always pass. In addition, if the test associated with the overlapping reservation with the highest RSRP measurement fails, the single-slot resource is excluded, regardless of whether the test associated with the overlapping reservation with the lower RSRP measurement passes or fails. In other words, for each priority within the single-slot resource, whether the single-slot resource is excluded or retained depends only on the test associated with the overlapping reservation with the highest RSRP measurement. For example, as shown by reference numeral 625-2, the two overlapping reservations in the first single-slot resource are associated with different priorities, so the PHY layer can independently test the two overlapping reservations based on the corresponding RSRP thresholds. However, in the second single-slot resource, the two overlapping reservations have the same priority. Therefore, in an example where the overlapping reservation corresponding to the gradient shaded area has a higher RSRP measurement than the overlapping reservation corresponding to the cross-hatched area, the PHY layer only tests the overlapping reservation corresponding to the gradient shaded area (Test 3).

[0089] As another example, as shown in reference number 625-3, in the case where a multi-slot resource is associated with a single priority value (e.g., the single-slot resources included in the multi-slot resource are all associated with the same priority value), the technique for determining whether to retain or exclude the multi-slot candidate resource can be further optimized. In this case, the PHY layer can determine whether to retain or exclude the multi-slot resource by looping across the priorities of the overlapping reservations, looking for the overlapping reservations associated with the highest RSRP for each priority across the multi-slot resources, and only testing the overlapping reservations associated with the highest RSRP for each priority. For example, as shown in the figure, the first single-slot resource and the second single-slot resource each include an overlapping reservation associated with a first priority (p=1). In the illustrated example, the overlapping reservation in the second single-slot resource can have a higher RSRP measurement than the overlapping reservation in the first single-slot resource, whereby the PHY layer can test only the overlapping reservation in the second single-slot resource for the first priority (e.g., the PHY layer does not perform test 1 for the overlapping reservation in the first single-slot resource having the first priority). Thus, in the first single-slot resource, the PHY layer may perform Test 2 only for the second overlapping reservation with the second priority (p=2). If Test 2 fails, the first single-slot resource, and therefore the multi-slot resource, may be excluded. However, if Test 2 passes, the first single-slot resource is retained, and the PHY layer may then cycle to the second single-slot resource. In this case, the PHY layer performs Test 4 for the second overlapping reservation of the first priority with the highest RSRP measurement. In addition, the PHY layer may not perform Test 3 for the first overlapping reservation with the second priority because an equivalent overlapping reservation has already been tested for the first single-slot resource.

[0090] See again Fig. 6AAs shown by reference number 630, the PHY layer may indicate a set of multi-slot candidate resources to the MAC entity, wherein the set of multi-slot candidate resources may each include multiple single-slot resources that are consecutive in the time domain. For example, as described herein, the PHY layer may generally identify a set of multi-slot candidate resources that satisfy one or more sets of resource selection parameters provided for multiple side link processes, and may perform one or more RSRP exclusion tests to determine whether to retain or exclude any multi-slot candidate resources associated with one or more overlapping reservations of other UEs (e.g., if each single-slot candidate resource included in the multi-slot candidate resources is reserved, the multi-slot candidate resources associated with one or more overlapping reservations are retained, or if one or more single-slot candidate resources included in the multi-slot candidate resources are excluded, the multi-slot candidate resources associated with one or more overlapping reservations are excluded). Therefore, as shown by reference number 630, the PHY layer may provide a set of suitable multi-slot candidate resources to the MAC entity, and the MAC entity may then select a multi-slot candidate resource from the set of multi-slot candidate resources provided by the PHY layer, as shown by reference number 635.

[0091] In some aspects, the MAC entity may generally select a multi-slot candidate resource from the set of multi-slot candidate resources provided by the PHY layer based on one or more strategies. For example, in some aspects, the MAC entity may randomly select a multi-slot candidate resource from the set of multi-slot candidate resources. In some aspects, in the absence of a continuous COT, the MAC entity may randomly select a multi-slot candidate resource from the set of multi-slot candidate resources (e.g., because in the case where the multi-slot resource is selected to meet the PDB requirements, there may not be a strong reason or need to select the multi-slot resource earlier or later within the selection window). Additionally or alternatively, the MAC entity may select the earliest available multi-slot resource within the set of multi-slot candidate resources, or the MAC entity may select a multi-slot resource based on a previously selected multi-slot resource (e.g., a previously selected multi-slot resource attached to the same resource block (RB) set or a previous multi-slot resource of a consecutive time slot with a previously selected multi-slot resource in the same resource block (RB) set). For example, in some aspects, in the presence of a persistent COT, the MAC entity may select a multi-slot resource based on a previously selected multi-slot resource (e.g., when there are not enough sidelink transmissions to fill the maximum COT duration, the current multi-slot resource selection may be attached to the previously selected multi-slot resource). Additionally or alternatively, the PHY layer may provide the set of multi-slot candidate resources in a ranked list based on a preference associated with each multi-slot candidate resource, wherein the preference may be based on one or more of the policies or criteria described above, the number of conflicts experienced by each multi-slot candidate resource, and / or the number of overlapping reservations associated with each multi-slot candidate resource.

[0092] like Fig. 6A As further shown and by reference numeral 640, the MAC entity may select one or more multi-slot resources for one or more TB retransmissions based on a retransmission type (e.g., based on whether the TB retransmission is a blind retransmission performed independently of the HARQ feedback for the initial transmission or a HARQ feedback retransmission performed based on HARQ feedback indicating a negative acknowledgement (NACK) for the initial transmission). For example, referring to Fig.6D , reference numerals 645-1 to 645-4 illustrate various examples of techniques that may be used by a MAC entity to select multi-slot resources for one or more TB retransmissions. Specifically, as described herein, after selecting an initial multi-slot resource for an initial transmission of a first TB, the MAC entity may typically select a multi-slot resource for retransmissions (e.g., by N 2 For example, a multi-slot resource for the first retransmission and / or the second retransmission of a TB may be selected within the remaining PDB associated with the TB based on the retransmission type. Fig.6D , reference numeral 645-1 depicts a first example, wherein the multi-slot resources for one or more blind retransmissions of each TB are located immediately after the multi-slot resources for initial transmission of the corresponding TB. Alternatively, reference numeral 645-2 depicts a second example, wherein the multi-slot resources for one or more blind retransmissions are located immediately after the last multi-slot resources for initial transmission of the last TB (e.g., immediately after the multi-slot resources for initial transmission of the last TB). N2 After the initial transmission of the multi-slot resource, the TB N2 is a set of N 2 The last TB in TB).

[0093] Alternatively, reference numerals 645-3 and 645-4 depict examples of techniques that a MAC entity may use to select a multi-slot resource for one or more retransmissions based on HARQ feedback. For example, in some aspects, the MAC entity may select a multi-slot resource for HARQ feedback retransmissions, and the multi-slot resource selected for the HARQ feedback retransmissions may be used for one or more retransmissions based on HARQ feedback carrying a NACK for an initial transmission of a TB. For example, reference numerals 645-3 and 645-4 depict examples of techniques that a MAC entity may use to select a multi-slot resource for one or more retransmissions based on HARQ feedback. Fig.6D, reference numeral 645-3 depicts an example in which the MAC entity selects a multi-slot resource for HARQ feedback retransmission that is located immediately after a minimum time gap from an initial transmission of a first TB in a group of multiple TBs (e.g., based on a HARQ feedback retransmission processing time and / or available HARQ feedback resources). Alternatively, reference numeral 645-4 depicts an example in which, if the minimum time gap is met, the MAC entity selects a multi-slot resource for HARQ feedback retransmission that is located immediately after a last multi-slot resource for an initial transmission of a last TB in a group of TBs.

[0094] See again Fig. 6A , as indicated by reference numeral 650, the MAC entity may provide the PHY layer with a set of TBs to be transmitted using the selected multi-slot resources. For example, if a sidelink HARQ entity associated with the sidelink process is requesting a new (initial) transmission of a TB, the sidelink process may store a MAC PDU corresponding to the TB in an associated HARQ buffer, store a sidelink grant received from the sidelink HARQ entity, and generate a transmission by instructing the PHY layer to transmit an SCI in accordance with the stored sidelink grant and associated sidelink transmission information and instructing the PHY layer to generate a transmission in accordance with the stored sidelink grant. Additionally or alternatively, if the sidelink HARQ entity is requesting a retransmission of a TB, the sidelink process may store a sidelink grant received from the sidelink HARQ entity, and generate a transmission by instructing the PHY layer to transmit an SCI in accordance with the stored sidelink grant and associated sidelink transmission information and instructing the PHY layer to generate a transmission in accordance with the stored sidelink grant. Thus, the MAC entity may use these techniques to generate a transmission for each TB to be transmitted using the selected multi-slot resources.

[0095] like Fig. 6AAs further shown, and by reference numeral 655, the PHY layer may perform an LBT process to obtain a COT (e.g., in the absence of a continuous COT). For example, the LBT process may include a clear channel assessment (CCA) process that the PHY layer performs to determine whether an unlicensed side link channel is available (e.g., not occupied by other transmitters). Specifically, the PHY layer of the Tx UE may perform a CCA process by detecting an energy level on the unlicensed side link channel and determining whether the energy level meets (e.g., is less than or equal to) a threshold (sometimes referred to as an energy detection threshold (EDT)). When the energy level meets (e.g., is lower than) the threshold, the LBT process is considered successful, and the Tx UE may access the unlicensed side link channel for the duration of the COT. During the COT, the Tx UE may perform one or more transmissions without having to perform any additional LBT operations. For example, as shown by reference numeral 660, the Tx UE may send one or more TBs to the Rx UE during the COT using a multi-slot resource selected by the MAC entity based on a successful LBT process. However, when the energy level fails to meet (eg, equal to or exceed) the EDT, the LBT process fails and contention by the Tx UE for access to the unlicensed sidelink channel is unsuccessful.

[0096] In the event that the LBT process fails due to a determination by the CCA process that the unlicensed channel band is unavailable (e.g., due to an energy level detected on the unlicensed channel exceeding the EDT, indicating that another device is already using the channel), the CCA process may be performed again later. In an environment where the Tx UE may lack access to the unlicensed side link channel (e.g., due to WLAN activity or transmissions by other devices), an extended CCA (eCCA) process may be employed to increase the likelihood that the Tx UE will successfully gain access to the unlicensed side link channel. For example, to perform the eCCA process, the Tx UE may perform a random number of CCA processes (from 1 to q) based on an eCCA counter. If and / or when the PHY layer senses that the channel has become idle, the Tx UE may start a random waiting period based on the eCCA counter, and start transmitting if the channel remains idle within the random waiting period.

[0097] like Fig. 6AAs further shown, and by reference numeral 665, in the presence of an LBT failure for a TB associated with a multi-slot resource selected by the MAC layer, the PHY layer may report the LBT failure to the MAC entity (or other higher layers). For example, in the case where sidelink resource selection is performed per TB (e.g., a single-slot resource is selected), the PHY layer may report the LBT failure to the MAC entity (or other higher layers) when the LBT process is not completed in time to send the TB on the single-slot resource selected for the TB. However, in the case where the MAC entity selects multi-slot resources for a number of slots exceeding the number of TBs to be sent on the unlicensed sidelink channel, the LBT failure indication should not be triggered at each slot, but rather should rely on the ability to send a given TB within the currently selected multi-slot resource. For example, in some aspects, in the case where the PDB of a TB associated with a multi-slot resource expires before a COT is acquired and / or based on a failure to send the TB during the associated multi-slot resource (whichever occurs first), the PHY layer may report the LBT failure for the TB to the MAC entity. In such a case, the MAC entity may then determine how to handle the transmission of the TB that the PHY layer was unable to send due to the LBT failure (e.g., triggering a new transmission for the TB, changing resource selection parameters for the TB, etc.).

[0098] As indicated above, FIG. 6A to FIG. 6D are provided as examples. Other examples can be found in the FIG. 6A to FIG. 6D The examples described are different.

[0099] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a UE in accordance with the present disclosure. Example process 700 is an example in which a UE (eg, UE 120) performs operations associated with multi-slot and multi-TB resource allocation in an unlicensed sidelink.

[0100] like Figure 7 As shown, in some aspects, process 700 may include triggering candidate resource selection for multiple sidelink processes associated with multiple TBs (block 710). For example, a UE (e.g., using Figure 8 The communication manager 140 and / or MAC component 808 depicted in FIG. 8 may trigger candidate resource selection for multiple side link processes associated with multiple TBs, as described above.

[0101] like Figure 7 As further shown, in some aspects, process 700 may include performing candidate resource selection to identify a set of multi-slot candidate resources for transmitting multiple TBs over multiple consecutive time slots (block 720). Figure 8The communication manager 140 and / or PHY component 810 depicted in FIG. 8 may perform candidate resource selection to identify a set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots, as described above.

[0102] like Figure 7 As further shown, in some aspects, process 700 may include selecting a multi-slot resource from the set of multi-slot candidate resources for transmitting a plurality of TBs over a plurality of consecutive time slots (block 730). Figure 8 The communication manager 140 and / or MAC component 808 depicted in FIG. 8 may select a multi-slot resource from the set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots, as described above.

[0103] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0104] In a first aspect, a UE includes a MAC entity that triggers candidate resource selection and a PHY layer that performs candidate resource selection.

[0105] In a second aspect alone or in combination with the first aspect, the number of time slots included in the plurality of consecutive time slots associated with the candidate resource selection is equal to or exceeds the number of TBs included in the plurality of TBs.

[0106] In a third aspect, either alone or in combination with one or more of the first and second aspects, candidate resource selection is based at least in part on one or more sets of resource selection parameters, wherein the number of the one or more sets of resource selection parameters is less than or equal to the number of TBs included in the plurality of TBs.

[0107] In a fourth aspect alone or in combination with one or more of the first to third aspects, the one or more sets of resource selection parameters comprise a compressed combined set of resource selection parameters.

[0108] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, performing candidate resource selection to identify the group of multi-slot candidate resources includes: identifying multi-slot candidate resources associated with one or more overlapping reservations in at least one time slot; and performing a test for each single-slot resource included in the multi-slot candidate resources to determine whether an RSRP measurement associated with the one or more overlapping reservations meets a threshold, wherein the multi-slot candidate resources are retained in the group of multi-slot candidate resources at least in part based on the RSRP measurement meeting the threshold for each single-slot resource included in the multi-slot candidate resources, or are excluded from the group of multi-slot candidate resources at least in part based on the RSRP measurement failing to meet the threshold for at least one single-slot resource included in the multi-slot candidate resources.

[0109] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, performing the test comprises independently testing each of the one or more overlapping reservations in each single-slot resource.

[0110] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, performing the test includes, for each overlapping reservation of one or more overlapping reservations in a single time slot resource associated with a priority value, testing only the overlapping reservation with the highest RSRP measurement.

[0111] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, performing a test includes, for each overlapping reservation of one or more overlapping reservations associated with priority values ​​across multi-slot candidate resources, testing only the overlapping reservation with the highest RSRP measurement based at least in part on the multi-slot candidate resources associated with a single priority value.

[0112] In a ninth aspect alone or in combination with one or more of the first to eighth aspects, a multi-slot resource is randomly selected from the set of multi-slot candidate resources.

[0113] In the tenth aspect alone or in combination with one or more of the first to ninth aspects, the multi-slot resource selected from the set of multi-slot candidate resources is the earliest available multi-slot candidate resource.

[0114] In the eleventh aspect alone or in combination with one or more of the first to tenth aspects, a multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a previous time slot consecutive to a plurality of consecutive time slots.

[0115] In a twelfth aspect alone or in combination with one or more of the first to eleventh aspects, a multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a continuous channel occupancy time.

[0116] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a ranked list associated with one or more preference criteria.

[0117] In the fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, a multi-slot resource is selected for an initial transmission and one or more blind retransmissions of a plurality of TBs.

[0118] In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, for each TB among multiple TBs, one or more single time slot resources used for one or more blind retransmissions of the corresponding TB are located after the single time slot resources used for the initial transmission of the corresponding TB.

[0119] In the sixteenth aspect alone or in combination with one or more of the first to fifteenth aspects, a single time slot resource used for one or more blind retransmissions of multiple TBs is located after a single time slot resource used for initial transmission of the multiple TBs.

[0120] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, a multi-slot resource is selected for an initial transmission of a plurality of TBs and one or more HARQ feedback retransmissions.

[0121] In the eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, a single time slot resource for one or more HARQ feedback retransmissions associated with a TB among multiple TBs is located immediately after the minimum time gap from the nearest single time slot resource used for the TB.

[0122] In the nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, the second multi-slot resource used for one or more HARQ feedback retransmissions is located at the minimum time gap after the first multi-slot resource used for the initial transmission or the most recent retransmission.

[0123] In the twentieth aspect alone or in combination with one or more of the first to nineteenth aspects, the second multi-slot resource is located immediately after the first multi-slot resource.

[0124] In aspect 21, alone or in combination with one or more of aspects 1 to 20, process 700 includes performing an LBT process to obtain a COT in which a TB associated with a multi-slot resource is sent, and triggering an LBT failure for the TB based at least in part on a PDB of the TB that expires before obtaining the COT.

[0125] In aspect 22, alone or in combination with one or more of aspects 1 to 21, process 700 includes performing an LBT process to obtain a COT in which a TB associated with a multi-slot resource is sent, and triggering an LBT failure for the TB based at least in part on not sending the TB during the multi-slot resource before obtaining the COT.

[0126] although Figure 7 An example block diagram of process 700 is shown, but in some aspects, process 700 may include Figure 7Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 700. Additionally or alternatively, two or more blocks of the blocks of process 700 may be performed in parallel.

[0127] Figure 8 800 is a diagram of an example apparatus 800 for wireless communication according to the present disclosure. The apparatus 800 may be a UE, or the UE may include the apparatus 800. In some aspects, the apparatus 800 includes a receiving component 802 and a transmitting component 804 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 800 may communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device) using the receiving component 802 and the transmitting component 804. As further shown, the apparatus 800 may include a communication manager 140. The communication manager 140 may include one or more of a MAC component 808 or a PHY component 810, etc.

[0128] In some aspects, the apparatus 800 may be configured to perform FIG. 6A to FIG. 6D Additionally or alternatively, the apparatus 800 may be configured to perform one or more processes described herein, such as Figure 7 In some aspects, the apparatus 800 and / or Figure 8 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Figure 8 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0129] The receiving component 802 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 806. The receiving component 802 may provide the received communications to one or more other components of the device 800. In some aspects, the receiving component 802 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 800. In some aspects, the receiving component 802 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0130] The transmitting component 804 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 806. In some aspects, one or more other components of the device 800 may generate communications and may provide the generated communications to the transmitting component 804 for transmission to the device 806. In some aspects, the transmitting component 804 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 806. In some aspects, the transmitting component 804 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 804 can be co-located with the receive component 802 in a transceiver.

[0131] The MAC component 808 may trigger candidate resource selection for multiple side link processes associated with multiple TBs. The PHY component 810 may perform candidate resource selection to identify a set of multi-slot candidate resources for sending multiple TBs over multiple consecutive time slots. The MAC component 808 may select a multi-slot resource for sending multiple TBs over multiple consecutive time slots from the set of multi-slot candidate resources.

[0132] The PHY component 810 may perform an LBT process to obtain a COT in which a TB associated with a multi-slot resource is transmitted. The PHY component 810 may trigger an LBT failure for a TB based at least in part on a PDB of the TB expiring before obtaining the COT.

[0133] The PHY component 810 can perform an LBT process to obtain a COT in which a TB associated with a multi-slot resource is transmitted. The PHY component 810 can trigger an LBT failure for a TB based at least in part on not transmitting the TB during the multi-slot resource before obtaining the COT.

[0134] Figure 8 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 8 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 8 Two or more components shown may be implemented in a single component, or Figure 8 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The component set (one or more components) shown may be described as being executable by Figure 8 Another component shown may be a collection of components that perform one or more functions.

[0135] The following provides an overview of some aspects of the disclosure:

[0136] Aspect 1: A method for wireless communication performed by a UE, the method comprising: triggering candidate resource selection for multiple side link processes associated with multiple TBs; performing the candidate resource selection to identify a set of multi-slot candidate resources for sending the multiple TBs on multiple consecutive time slots; and selecting multi-slot resources from the set of multi-slot candidate resources for sending the multiple TBs on the multiple consecutive time slots.

[0137] Aspect 2: The method according to aspect 1, wherein the UE includes a MAC entity that triggers the candidate resource selection and a PHY layer that performs the candidate resource selection.

[0138] Aspect 3: The method according to any one of aspects 1 to 2, wherein the number of time slots included in the multiple consecutive time slots associated with the candidate resource selection is equal to or exceeds the number of TBs included in the multiple TBs.

[0139] Aspect 4: A method according to any one of Aspects 1 to 3, wherein the candidate resource selection is based at least in part on one or more sets of resource selection parameters, wherein the number of the one or more sets of resource selection parameters is less than or equal to the number of TBs included in the multiple TBs.

[0140] Aspect 5: The method according to aspect 4, wherein the one or more sets of resource selection parameters include a compressed combined set of resource selection parameters.

[0141] Aspect 6: A method according to any one of Aspects 1 to 5, wherein performing the candidate resource selection to identify the set of multi-slot candidate resources includes: identifying a multi-slot candidate resource associated with one or more overlapping reservations in at least one time slot; and performing a test for each single-slot resource included in the multi-slot candidate resources to determine whether the RSRP measurement associated with the one or more overlapping reservations meets a threshold, wherein the multi-slot candidate resources: are retained in the set of multi-slot candidate resources at least in part based on the RSRP measurement meeting the threshold for each single-slot resource included in the multi-slot candidate resources, or are excluded from the set of multi-slot candidate resources at least in part based on the RSRP measurement failing to meet the threshold for at least one single-slot resource included in the multi-slot candidate resources.

[0142] Aspect 7: The method according to aspect 6, wherein performing the test comprises independently testing each of the one or more overlapping reservations in each single-slot resource.

[0143] Aspect 8: The method according to aspect 6, wherein performing the test includes, for each of the one or more overlapping reservations in the single time slot resource associated with the priority value, testing only the overlapping reservation with the highest RSRP measurement.

[0144] Aspect 9: A method according to Aspect 6, wherein performing the test includes, for each of the one or more overlapping reservations associated with priority values ​​across the multi-slot candidate resources, testing only the overlapping reservation with the highest RSRP measurement based at least in part on the multi-slot candidate resources associated with a single priority value.

[0145] Aspect 10: The method according to any one of aspects 1 to 9, wherein the multi-slot resource is randomly selected from the set of multi-slot candidate resources.

[0146] Aspect 11: The method according to any one of aspects 1 to 10, wherein the multi-slot resource selected from the set of multi-slot candidate resources is the earliest available multi-slot candidate resource.

[0147] Aspect 12: The method according to any one of aspects 1 to 11, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a previous time slot that is consecutive to the plurality of consecutive time slots.

[0148] Aspect 13: The method according to any one of aspects 1 to 12, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a continuous channel occupancy time.

[0149] Aspect 14: The method according to any one of aspects 1 to 13, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a ranked list associated with one or more preference criteria.

[0150] Aspect 15: The method according to any one of aspects 1 to 14, wherein the multi-slot resources are selected for an initial transmission and one or more blind retransmissions of the plurality of TBs.

[0151] Aspect 16: The method according to aspect 15, wherein for each TB of the multiple TBs, one or more single-slot resources used for the one or more blind retransmissions of the corresponding TB are located after the single-slot resources used for the initial transmission of the corresponding TB.

[0152] Aspect 17: The method according to aspect 15, wherein the single time slot resources for the one or more blind retransmissions of the plurality of TBs are located after the single time slot resources for the initial transmission of the plurality of TBs.

[0153] Aspect 18: The method according to any one of aspects 1 to 17, wherein the multi-slot resources are selected for an initial transmission and one or more HARQ feedback retransmissions of the plurality of TBs.

[0154] Aspect 19: The method according to aspect 18, wherein the single-slot resources used for the one or more HARQ feedback retransmissions associated with a TB among the multiple TBs are located immediately after a minimum time gap from a nearest single-slot resource used for the TB.

[0155] Aspect 20: The method according to aspect 18, wherein the second multi-slot resource used for the one or more HARQ feedback retransmissions is located at a minimum time gap after the first multi-slot resource used for the initial transmission or the most recent retransmission.

[0156] Aspect 21: The method according to Aspect 20, wherein the second multi-slot resource is located immediately after the first multi-slot resource.

[0157] Aspect 22: According to the method described in any one of Aspects 1 to 21, the method further includes: performing an LBT process to obtain a COT in which a TB associated with the multi-slot resource is sent; and triggering an LBT failure for the TB based at least in part on a PDB of the TB expiring before obtaining the COT.

[0158] Aspect 23: According to the method described in any one of Aspects 1 to 22, the method further includes: performing an LBT process to obtain a COT in which a TB associated with the multi-slot resource is sent; and triggering an LBT failure for the TB based at least in part on the fact that the TB was not sent during the multi-slot resource before obtaining the COT.

[0159] Aspect 24: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 23.

[0160] Aspect 25: 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 execute the method according to one or more of aspects 1 to 23.

[0161] Aspect 26: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 23.

[0162] Aspect 27: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 23.

[0163] Aspect 28: 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 device, cause the device to perform one or more of the methods described in aspects 1 to 23.

[0164] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0165] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes and / or functions, etc. As used herein, "processor" is implemented by hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the various aspects. Therefore, the operation and behavior of the systems and / or methods are not described herein with reference to specific software codes, because it will be understood by those skilled in the art that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0166] As used herein, "satisfying a threshold" may 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, etc., depending on the context.

[0167] Although the specific combination of features is stated in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically stated in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of the list of items" refers to any combination of these items (which includes a single member). 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, and any combination with multiple identical elements (for example, a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0168] Any element, action or instruction used herein should not be interpreted as critical or necessary unless clearly stated. In addition, as used herein, the article "one" is intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "said one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items and can be used interchangeably with "one or more". If you only want to refer to an item, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element with" A may also have B). In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise clearly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless expressly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. A method of wireless communication performed by a user equipment (UE), the method include: triggering candidate resource selection for a plurality of sidelink processes associated with a plurality of transport blocks (TBs); performing the candidate resource selection to identify a set of multi-slot candidate resources for transmitting the plurality of TBs over a plurality of consecutive time slots; as well as A multi-slot resource for transmitting the plurality of TBs over the plurality of consecutive time slots is selected from the set of multi-slot candidate resources.

2. The method of claim 1, wherein the UE comprises a medium access control (MAC) entity that triggers the candidate resource selection and a physical (PHY) layer that performs the candidate resource selection. 3 . The method of claim 1 , wherein the number of time slots included in the plurality of consecutive time slots associated with the candidate resource selection is equal to or exceeds the number of TBs included in the plurality of TBs. 4 . The method of claim 1 , wherein the candidate resource selection is based at least in part on one or more sets of resource selection parameters, wherein a number of the one or more sets of resource selection parameters is less than or equal to a number of TBs included in the plurality of TBs.

5. The method of claim 4, wherein the one or more sets of resource selection parameters comprise a compressed combined set of resource selection parameters.

6. The method of claim 1 , wherein the candidate resource selection is performed to identify the set of multi-slot candidate resources include: identifying a multi-slot candidate resource associated with one or more overlapping reservations in at least one time slot; as well as performing a test for each single-slot resource included in the multi-slot candidate resources to determine whether a reference signal received power (RSRP) measurement associated with the one or more overlapping reservations satisfies a threshold, wherein the multi-slot candidate resources: remaining in the set of multi-slot candidate resources based at least in part on the RSRP measurement satisfying the threshold for each single-slot resource included in the multi-slot candidate resources, or At least one single-slot resource included in the multi-slot candidate resources is excluded from the set of multi-slot candidate resources based at least in part on the RSRP measurement failing to satisfy the threshold for the at least one single-slot resource included in the multi-slot candidate resources.

7. The method of claim 6, wherein performing the testing comprises independently testing each of the one or more overlapping reservations in each single-slot resource.

8. The method of claim 6, wherein performing the testing comprises, for each of the one or more overlapping reservations in a single-slot resource associated with a priority value, testing only the overlapping reservation having the highest RSRP measurement.

9. The method of claim 6 , wherein performing the test comprises, for each of the one or more overlapping reservations associated with priority values ​​across the multi-slot candidate resources, testing only the overlapping reservation having the highest RSRP measurement based at least in part on the multi-slot candidate resources associated with a single priority value.

10. The method of claim 1, wherein the multi-slot resource is randomly selected from the set of multi-slot candidate resources.

11. The method of claim 1, wherein the multi-slot resource selected from the set of multi-slot candidate resources is the earliest available multi-slot candidate resource.

12. The method of claim 1, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a previous time slot that is consecutive to the plurality of consecutive time slots.

13. The method of claim 1, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a continuous channel occupancy time.

14. The method of claim 1, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a ranked list associated with one or more preference criteria.

15. The method of claim 1, wherein the multi-slot resource is selected for an initial transmission and one or more blind retransmissions of the plurality of TBs. 16 . The method of claim 15 , wherein for each TB in the plurality of TBs, one or more single-slot resources used for the one or more blind retransmissions of the corresponding TB are located after the single-slot resources used for the initial transmission of the corresponding TB.

17. The method of claim 15, wherein the single-slot resources for the one or more blind retransmissions of the plurality of TBs are located after the single-slot resources for the initial transmission of the plurality of TBs.

18. The method of claim 1, wherein the multi-slot resource is selected for an initial transmission and one or more hybrid automatic repeat request (HARQ) feedback retransmissions of the plurality of TBs.

19. The method of claim 18, wherein the single-slot resources used for the one or more HARQ feedback retransmissions associated with a TB among the plurality of TBs are located immediately after a minimum time gap from a nearest single-slot resource used for the TB.

20. The method of claim 18, wherein the second multi-slot resource used for the one or more HARQ feedback retransmissions is located at a minimum time gap after the first multi-slot resource used for the initial transmission or the most recent retransmission.

21. The method of claim 20, wherein the second multi-slot resource is located immediately after the first multi-slot resource.

22. The method according to claim 1, further comprising: include: performing a listen-before-talk (LBT) procedure to obtain a channel occupation time (COT) in which a TB associated with the multi-slot resource is to be transmitted; as well as An LBT failure for the TB is triggered based at least in part on a packet delay budget for the TB expiring before acquiring the COT.

23. The method according to claim 1, further comprising: include: performing a listen-before-talk (LBT) procedure to obtain a channel occupation time (COT) in which a TB associated with the multi-slot resource is to be transmitted; as well as An LBT failure for the TB is triggered based at least in part on not transmitting the TB during the multi-slot resource before acquiring the COT.

24. A user equipment (UE) for wireless communication, the user equipment (UE) include: Memory; and one or more processors coupled to the memory and configured to: triggering candidate resource selection for a plurality of sidelink processes associated with a plurality of transport blocks (TBs); performing the candidate resource selection to identify a set of multi-slot candidate resources for transmitting the plurality of TBs over a plurality of consecutive time slots; as well as A multi-slot resource for transmitting the plurality of TBs over the plurality of consecutive time slots is selected from the set of multi-slot candidate resources.

25. The UE of claim 24, wherein the UE comprises a medium access control (MAC) entity that triggers the candidate resource selection and a physical (PHY) layer that performs the candidate resource selection. 26 . The UE of claim 24 , wherein the number of time slots included in the plurality of consecutive time slots associated with the candidate resource selection is equal to or exceeds the number of TBs included in the plurality of TBs.

27. The UE of claim 24, wherein the candidate resource selection is based at least in part on one or more sets of resource selection parameters, wherein a number of the one or more sets of resource selection parameters is less than or equal to a number of TBs included in the plurality of TBs.

28. The UE of claim 27, wherein the one or more sets of resource selection parameters comprise a compressed combined set of resource selection parameters.

29. The UE of claim 24, wherein to perform the candidate resource selection to identify the set of multi-slot candidate resources, the one or more processors are configured to: identifying multi-slot candidate resources associated with one or more overlapping reservations in at least one time slot; and performing a test for each single-slot resource included in the multi-slot candidate resources to determine whether a reference signal received power (RSRP) measurement associated with the one or more overlapping reservations satisfies a threshold, wherein the multi-slot candidate resources: remaining in the set of multi-slot candidate resources based at least in part on the RSRP measurement satisfying the threshold for each single-slot resource included in the multi-slot candidate resources, or At least one single-slot resource included in the multi-slot candidate resources is excluded from the set of multi-slot candidate resources based at least in part on the RSRP measurement failing to satisfy the threshold for the at least one single-slot resource included in the multi-slot candidate resources.

30. The UE of claim 29, wherein to perform the testing, the one or more processors are configured to independently test each of the one or more overlapping reservations in each single-slot resource.

31. The UE of claim 29, wherein to perform the test, the one or more processors are configured to test only the overlapping reservation having the highest RSRP measurement for each of the one or more overlapping reservations in the single time slot resources associated with the priority value.

32. A UE according to claim 29, wherein to perform the test, the one or more processors are configured to test only the overlapping reservation with the highest RSRP measurement for each of the one or more overlapping reservations associated with priority values ​​across the multi-slot candidate resources, at least in part based on the multi-slot candidate resources associated with a single priority value.

33. The UE of claim 24, wherein the multi-slot resource is randomly selected from the set of multi-slot candidate resources.

34. The UE of claim 24, wherein the multi-slot resource selected from the set of multi-slot candidate resources is an earliest available multi-slot candidate resource.

35. The UE of claim 24, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a previous slot that is consecutive to the plurality of consecutive slots.

36. The UE of claim 24, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a previous multi-slot resource selected for a continuous channel occupancy time.

37. The UE of claim 24, wherein the multi-slot resource is selected from the set of multi-slot candidate resources based at least in part on a ranked list associated with one or more preference criteria.

38. The UE of claim 24, wherein the multi-slot resources are selected for an initial transmission and one or more blind retransmissions of the plurality of TBs.

39. The UE of claim 38, wherein for each TB of the plurality of TBs, one or more single-slot resources used for the one or more blind retransmissions of the corresponding TB are located after the single-slot resources used for the initial transmission of the corresponding TB.

40. The UE of claim 38, wherein the single-slot resources for the one or more blind retransmissions of the plurality of TBs are located after the single-slot resources for the initial transmission of the plurality of TBs.

41. The UE of claim 24, wherein the multi-slot resources are selected for an initial transmission and one or more hybrid automatic repeat request (HARQ) feedback retransmissions of the plurality of TBs.

42. The UE of claim 41, wherein the single-slot resources used for the one or more HARQ feedback retransmissions associated with one TB among the plurality of TBs are located immediately after a minimum time gap from a nearest single-slot resource used for the TB.

43. The UE of claim 41, wherein the second multi-slot resource used for the one or more HARQ feedback retransmissions is located at a minimum time gap after the first multi-slot resource used for the initial transmission or the most recent retransmission.

44. The UE of claim 43, wherein the second multi-slot resource is located immediately after the first multi-slot resource.

45. The UE of claim 24, wherein the one or more processors are further configured to: performing a listen-before-talk (LBT) procedure to obtain a channel occupation time (COT) in which a TB associated with the multi-slot resource is to be transmitted; and An LBT failure for the TB is triggered based at least in part on a packet delay budget for the TB expiring before acquiring the COT.

46. ​​The UE of claim 24, wherein the one or more processors are further configured to: performing a listen-before-talk (LBT) procedure to obtain a channel occupation time (COT) in which a TB associated with the multi-slot resource is to be transmitted; and An LBT failure for the TB is triggered based at least in part on not transmitting the TB during the multi-slot resource before acquiring the COT.

47. A non-transitory computer readable medium storing an instruction set for wireless communication, the instruction set include: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: triggering candidate resource selection for a plurality of sidelink processes associated with a plurality of transport blocks (TBs); performing the candidate resource selection to identify a set of multi-slot candidate resources for transmitting the plurality of TBs over a plurality of consecutive time slots; as well as A multi-slot resource for transmitting the plurality of TBs over the plurality of consecutive time slots is selected from the set of multi-slot candidate resources.

48. A device for wireless communication, the device include: means for triggering candidate resource selection for a plurality of sidelink processes associated with a plurality of transport blocks (TBs); means for performing said candidate resource selection to identify a set of multi-slot candidate resources for transmitting said plurality of TBs over a plurality of consecutive time slots; and Means for selecting a multi-slot resource from the set of multi-slot candidate resources for transmitting the plurality of TBs over the plurality of consecutive time slots.

49. A method, apparatus, device, computer program product, non-transitory computer readable medium, user equipment, base station, node, wireless communication device and / or processing system as generally described herein with reference to the accompanying drawings and description and as illustrated by the accompanying drawings and description.

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