Selection and reselection of resources for transmission

Abstract

Various aspects of the present disclosure generally relate to wireless communications. Various aspects relate generally to configurations for reselecting resources for transmitting one or more transport blocks (TBs) for sidelink communications. Some aspects are more particularly directed to providing a configuration indicating whether to reselect a resource to transmit one or more TBs in association with an unavailability of one or more resources in a first set of resources selected to transmit the one or more TBs. In some aspects, the configuration may indicate whether to transmit the one or more TBs via available resources in the first set of resources (e.g., remaining resources that are not unavailable) or to reselect a second set of resources for transmitting the one or more TBs.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to Greek patent application No. 20230100132, filed on February 17, 2023, entitled “SELECTION AND RESELECTION OF RESOURCES FOR TRANSMISSION” and assigned to the assignee of the present application. The disclosure of the prior application is considered a part of and incorporated by reference into the present patent application. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and particularly to techniques and apparatuses for selecting and reselecting resources for transmission. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth or transmit power). 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).

[0005] The above 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, 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, CP-OFDM or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink, and 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.

[0006] In some networks, a wireless communication device (WCD) may select a resource in a sidelink channel for transmitting a transport block (TB). After selecting a resource and before transmitting a TB via the resource, the WCD may evaluate the availability of the resource. If the WCD determines that the resource is unavailable, the WCD may reselect a new resource for transmitting the TB.

[0007] In some networks, the WCD may select a resource set in a sidelink channel for transmitting one or more TBs. The resource set may have more resources than required to transmit the one or more TBs. However, the WCD typically reselects a new resource set based on a determination of unavailability of any resource in the resource set. Summary of the Invention

[0008] Some aspects described herein relate to a method of wireless communication performed by a wireless communication device (WCD). The method may include, after selecting a first set of resources for transmitting one or more transport blocks (TBs), performing one or more evaluations of the availability of the first set of resources. The method may include, in association with unavailability of one or more resources in the first set of resources, performing one of the following: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or reselecting a third set of resources for transmitting a first subset of the one or more TBs and transmitting the second subset of the one or more TBs on the subset of the first set of resources.

[0009] Some aspects described herein relate to a WCD for wireless communication. A wireless communication device may include a processing system comprising one or more processors and one or more memories coupled to the one or more processors. The processing system may be configured to cause the WCD to perform one or more evaluations of the availability of a first set of resources after selecting the first set of resources for transmitting one or more TBs. The processing system may be configured to cause the WCD to perform one or more evaluations of the availability of the first set of resources after selecting the first set of resources for transmitting one or more TBs. The processing system may be configured to cause the WCD to perform one of the following in association with the unavailability of one or more resources in the first set of resources: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or reselecting a third set of resources for transmitting a first subset of the one or more TBs and transmitting a second subset of the one or more TBs on a subset of the first set of resources.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a wireless communication device (WCD). The set of instructions, when executed by one or more processors of the WCD, may cause the WCD to perform one or more evaluations of the availability of a first set of resources after selecting one or more TBs for transmission. The set of instructions, when executed by the one or more processors of the WCD, may cause the WCD to, in association with the unavailability of one or more resources in the first set of resources, one of: transmit the one or more TBs via one or more available time slots of the first set of resources; reselect a second set of resources for transmitting the one or more TBs and transmit the one or more TBs via the second set of resources; or reselect a third set of resources for transmitting a first subset of the one or more TBs and transmit the second subset of the one or more TBs on a subset of the first set of resources.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for performing one or more evaluations of the availability of a first set of resources after selecting one or more TBs for transmission. The apparatus may include components for performing, in association with unavailability of one or more resources in the first set of resources, one of: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or reselecting a third set of resources for transmitting a first subset of the one or more TBs and transmitting the second subset of the one or more TBs on a subset of the first set of resources.

[0012] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network nodes, network entities, wireless communication devices, or processing systems as fully described with reference to the accompanying drawings and description and as illustrated in the accompanying drawings and description.

[0013] The foregoing has broadly outlined the features and technical advantages of the examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed can be readily utilized 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. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood from the following description. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to fully understand the above-mentioned features of the present disclosure, a more particular description of the invention briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). It should be noted, however, that the accompanying drawings illustrate only some typical aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0015] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0016] Figure 2 is a diagram illustrating an example network node communicating with a user equipment (UE) in a wireless network according to the present disclosure.

[0017] Figure 3 is a diagram illustrating an example of side link communication according to the present disclosure.

[0018] Figure 4 is a diagram illustrating an example of side link communication and access link communication according to the present disclosure.

[0019] Figure 5 is a diagram of an example associated with selecting resources for transmitting a transport block (TB) via a sidelink channel according to the present disclosure.

[0020] Figure 6 is a diagram of an example associated with selecting resources for transmitting a TB via a sidelink channel according to the present disclosure.

[0021] Figure 7 is a diagram of an example associated with selecting and reselecting resources for transmission according to the present disclosure.

[0022] Figure 8 is a diagram of an example associated with selecting and reselecting resources for transmission according to the present disclosure.

[0023] Figure 9 is a diagram illustrating an example process performed, for example, by a wireless communication device according to the present disclosure.

[0024] Figure 10 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0025] 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 interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of protection of the present disclosure will be fully conveyed to those skilled in the art. It will be appreciated 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 amount of aspects set forth herein can 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 that are practiced using other structures, functionality, or structure and functionality in addition to or different from the various aspects of the disclosure set forth herein. Any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

[0026] 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, or algorithms (collectively, "elements"). These elements may be implemented using hardware, software, or a combination of hardware and software. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] Various aspects generally relate to configurations for reselecting resources for transmitting one or more transport blocks (TBs) for sidelink communication. Some aspects more specifically relate to providing a configuration that indicates whether to reselect resources for transmitting the one or more TBs in association with the unavailability of one or more resources in a first set of resources selected for transmitting the one or more TBs. In some aspects, the configuration may indicate whether to transmit the one or more TBs via available resources (e.g., remaining resources that are not unavailable) in the first set of resources or to reselect a second set of resources for transmitting the one or more TBs.

[0028] In some aspects, a wireless communication device (WCD) may reselect the second set of resources based at least in part on insufficient available resources to transmit one or more TBs, a threshold percentage of the first set of resources being unavailable, or a threshold amount of contiguous time slots not being met, etc. In some examples, the WCD may reselect the second set of resources to replace all resources in the first set of resources. In some other examples, the WCD may transmit a first subset of the one or more TBs via available resources in the first set of resources and a second subset of the one or more TBs via the second set of resources.

[0029] Certain aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. In some examples, the described techniques can be used to transmit all or a subset of TBs using available resources in a resource set when efficient. In this way, the WCD can use available resources rather than wasting them and reselecting a new full resource set. This can improve spectral efficiency and latency in the associated network by conserving network resources that might otherwise be wasted or selected from a new full resource set.

[0030] Figure 1 1 is a diagram illustrating an example of a wireless network according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes (NNs) 110 (shown as network nodes 110a, 110b, 110c, and 110d), one user equipment (UE) 120 or multiple UEs 120 (shown as UEs 120a, 120b, 120c, 120d, and 120e), or other network entities. The network node 110 is an entity 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, meaning that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning 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)).

[0031] In some examples, network node 110 is or includes a network node (such as an RU) that communicates with UE 120 via a radio access link. In some examples, network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, network node 110 (such as a converged network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, or one or more DUs. For example, network node 110 may include an NR network node, an LTE network node, 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, an RU, a CU, a mobility element of a network, a core network node, a network element, network equipment, or a RAN node. 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 using any suitable transport network via various types of fronthaul interfaces, midhaul interfaces, or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks.

[0032] Each network node 110 may provide communication coverage for a particular geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" may refer to a coverage area of ​​a network node 110 or a network node subsystem serving the coverage area, depending on the context in which the term is used.

[0033] The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs 120 associated with the femto cell (e.g., UEs 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. A network node 110 for a femto cell may be referred to as a femto network node or a home network node.

[0034] 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, or relay network nodes. These different types of network nodes 110 may have different transmit power levels, different coverage areas, 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). Figure 1 In the example shown in FIG, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0035] 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 (RIC), or a non-real-time (non-RT) RIC. 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 network node 110. In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which may be located in the same 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. In this way, a single device may include more than one base station.

[0036] 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. 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 a CU or a core network device, or the network controller 130 may include a CU or a core network device.

[0037] In some examples, cells 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). In some examples, network nodes 110 may interconnect with each other or with one or more other network nodes 110 or network nodes (not shown) in wireless network 100 using any suitable transport network via various types of backhaul interfaces, such as direct physical connections or virtual networks.

[0038] The wireless network 100 may include one or more relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a network node 110 or a UE 120) and transmit the data transmissions to a downstream station (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown in , network node 110d (e.g., a relay network node) may communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communications between network node 110a and UE 120d. A network node 110 that relays communications may be referred to as a relay station, relay network node, or relay.

[0039] UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, or a subscriber unit. UE 120 may be a cellular phone (e.g., a smartphone), 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 device, 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 smart bracelet)), an entertainment device (e.g., a music device, a video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, a UE function of a network node, or any other suitable device configured to communicate via a wireless medium.

[0040] Some UEs 120 may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, or location tags that can communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. The UE 120 may be included inside a housing that houses components of the UE 120, such as a processor component or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.

[0041] 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. A RAT may also be referred to as a radio technology or air interface. A frequency may also be referred to as a carrier or frequency channel. Each frequency in a given geographic area may support a single RAT to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0042] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 can 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), or a mesh network. In such examples, UE 120 can perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by network node 110.

[0043] Devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various categories, bands, or channels by frequency or wavelength. For example, 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 to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. Similar naming issues sometimes arise in connection with FR2, which is often (interchangeably) referred to as the "millimeter wave" band in various documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0044] 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 (7.125 GHz to 24.25 GHz). The frequency bands falling within FR3 can inherit FR1 characteristics or FR2 characteristics, and thus the features of FR1 or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation to more than 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0045] Considering the above examples, unless otherwise specifically stated, if the term "sub-6 GHz" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless otherwise specifically stated, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a, FR4-1, 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, or FR5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0046] In some aspects, a WCD (e.g., a UE) may include a communication manager 140. As described in greater detail elsewhere herein, the communication manager 140 may, after selecting a first set of resources for transmitting one or more TBs, perform one or more evaluations of the availability of the first set of resources; and, in association with the unavailability of one or more resources in the first set of resources, perform one of the following: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or reselecting a third set of resources for transmitting a first subset of the one or more TBs and transmitting the second subset of the one or more TBs on the subset of the first set of resources. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0047] Figure 2 is a diagram illustrating an example 200 of a network node communicating with a UE in a wireless network according to the present disclosure. The network node may correspond to Figure 1 Similarly, the UE may correspond to the network node 110. Figure 1 UE 120. Network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ≥ 1). UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1). Figure 2 The network node 110 depicted in FIG 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 radio frequency components, such as one or more CUs or one or more DUs, that facilitate direct communication with the UE 120.

[0048] At network node 110, transmit processor 220 may receive data intended for UE 120 (or a set of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCS) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols for UE 120. Transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference 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., precoding) on ​​data symbols, control symbols, overhead symbols, or reference symbols, as applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a through 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of 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, or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0049] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from the network node 110 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 through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, or digitize) the received signal to obtain input samples. Each modem 254 may use the 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, if 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 a data sink 260, and may provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers or one or more processors. 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, or a CQI parameter, among other parameters. In some examples, one or more components of the UE 120 may be included in a housing 284.

[0050] 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.

[0051] One or more antennas (e.g., antennas 234a to 234t or antennas 252a to 252r) may include or may be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, etc. An antenna panel, antenna group, set of antenna elements, or antenna array may include one or more antenna elements (in a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, or a plurality of antenna elements coupled to one or more transmit or receive components (such as antennas). Figure 2 One or more antenna elements of one or more components).

[0052] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, or CQI) from the controller / processor 280. 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, if applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform aspects of any of the methods described herein.

[0053] At the network node 110, uplink signals from the UE 120 or other UEs may be received by an antenna 234, processed by a modem 232 (e.g., a demodulator component of the modem 232, shown as DEMOD), detected by a MIMO detector 236, if applicable, and further processed by a receive processor 238 to obtain decoded data and control information transmitted via the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a 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 or uplink communications. 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 an antenna 234, a modem 232, a MIMO detector 236, a receive processor 238, a transmit processor 220, or a TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein.

[0054] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component of the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, or the like may perform one or more techniques associated with selecting and reselecting resources for transmission, as described in more detail elsewhere herein. Figure 2 Any other component of the may perform or direct e.g. Figure 9 900 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 or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, or interpretation) by one or more processors of network node 110 or UE 120, may cause the one or more processors, UE 120, or network node 110 to perform or direct, for example, Figure 9 The operations of process 900 or other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, or interpreting instructions, etc.

[0055] In some aspects, the WCD includes means for, after selecting a first set of resources for transmitting one or more TBs, performing one or more evaluations of the availability of the first set of resources; or, in association with unavailability of one or more resources in the first set of resources, performing one of the following: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or reselecting a third set of resources for transmitting a first subset of the one or more TBs and transmitting the second subset of the one or more TBs on the subset of the first set of resources. In some aspects, means for the WCD to perform the operations described herein may include, for example, one or more of the communications 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.

[0056] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of the network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated architecture or a 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 known as an independent base station or a monolithic base station) or a decomposed base station. A "network entity" or a "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 or one or more RUs).

[0057] A converged base station (e.g., a converged network node) can be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) can be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the 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 spread across one or more other network nodes. The DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and 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), among others.

[0058] Base station type operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated 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 scaling of the communication system by separating base station functionality into one or more units that can be deployed separately. A disaggregated 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. Various units of the disaggregated base station may be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

[0059] Figure 3 is a diagram illustrating an example 300 of sidelink communications according to the present disclosure.

[0060] like Figure 3As shown, a first UE 305-1 can communicate with a second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. UEs 305-1 and 305-2 can communicate using one or more sidelink channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, or V2P communication), or mesh networking. In some aspects, a UE 305 (e.g., UE 305-1 or UE 305-2) can correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more sidelink channels 310 can use a PC5 interface or can operate in a high frequency band (e.g., a 5.9 GHz band). Additionally or alternatively, UE 305 can 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).

[0061] like Figure 3 As further shown, one or more sidelink channels 310 may include a physical sidelink control channel (PSCCH) 315, a physical sidelink shared channel (PSSCH) 320, or a physical sidelink feedback channel (PSFCH) 325. PSCCH 315 may be used to convey control information, similar to a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH) used for cellular communication with network node 110 via an access link or access channel. PSSCH 320 may be used to convey data, similar to a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH) used for cellular communication with network node 110 via an access link or access channel. For example, 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, or spatial resources), wherein TB 335 may be carried on PSSCH 320. 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), or scheduling request (SR).

[0062] Although shown on the PSCCH 315, in some aspects, the 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 transmitted on the PSCCH 315. SCI-2 may be transmitted on the PSSCH 320. SCI-1 may include, for example, an indication of one or more resources (e.g., time resources, frequency resources, or space resources) on the PSSCH 320, information for decoding sidelink communications on the PSSCH, a quality of service (QoS) priority value, a resource reservation period, a PSSCH DMRS pattern, an SCI format for SCI-2, a beta offset for SCI-2, the number of PSSCH DMRS ports, or an MCS. SCI-2 may include information associated with data transmission on the PSSCH 320, such as a HARQ process ID, a new data indicator (NDI), a source identifier, a destination identifier, or a channel state information (CSI) report trigger.

[0063] In some aspects, one or more sidelink channels 310 may utilize a resource pool. For example, a scheduling assignment (e.g., included in SCI 330) may be transmitted in a subchannel using specific resource blocks (RBs) across time. In some aspects, a data transmission associated with the scheduling assignment (e.g., on PSSCH 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 transmission are not transmitted on adjacent RBs.

[0064] In some aspects, the UE 305 may operate using a sidelink transmission mode (e.g., Mode 1) in which resource selection or scheduling is performed by the network node 110 (e.g., a base station, CU, or DU). For example, the UE 305 may receive a grant (e.g., in downlink control information (DCI) or in a radio resource control (RRC) message, such as for a configured grant) from the network node 110 (e.g., directly or via one or more network nodes) for sidelink channel access or scheduling. In some aspects, the UE 305 may operate using a transmission mode (e.g., Mode 2) in which resource selection or scheduling is performed by the UE 305 (e.g., rather than the network node 110). In some aspects, the UE 305 may perform resource selection or scheduling by sensing channel availability for transmission. For example, UE 305 may measure RSSI parameters associated with various sidelink channels (e.g., sidelink-RSSI (S-RSSI) parameters), may measure RSRP parameters associated with various sidelink channels (e.g., PSSCH-RSRP parameters), or may measure RSRQ parameters associated with various sidelink channels (e.g., PSSCH-RSRQ parameters), and may select a channel for sending sidelink communications based at least in part on the measurements.

[0065] Additionally or alternatively, the UE 305 may perform resource selection or scheduling using the SCI 330 received in the PSCCH 315, which may indicate occupied resources or channel parameters. Additionally or alternatively, the UE 305 may perform resource selection 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 amount of resource blocks that the UE 305 may use for a particular set of subframes).

[0066] In a transmission mode in which resource selection or scheduling is performed by the UE 305, the UE 305 may generate sidelink grants and may transmit 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 (e.g., for TB 335) to be used for an upcoming sidelink transmission on the PSSCH 320, one or more subframes to be used for an upcoming sidelink transmission, 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.

[0067] As indicated above, Figure 3Provided as an example. Other examples may be Figure 3 The examples described are different.

[0068] Figure 4 is a diagram illustrating an example 400 of sidelink and access link communications according to the present disclosure.

[0069] like Figure 4 As shown, the transmitter (Tx) / receiver (Rx) UE 405 and the Rx / Tx UE 410 can communicate with each other via a side link, as described above in conjunction with Figure 3 As further shown, in some sidelink modes, the network node 110 may communicate (e.g., directly or via one or more network nodes), such as via a first access link, with the Tx / Rx UE 405. Additionally or alternatively, in some sidelink modes, the network node 110 may communicate (e.g., directly or via one or more network nodes), such as via a first access link, with the Rx / Tx UE 410. The Tx / Rx UE 405 or the Rx / Tx UE 410 may correspond to one or more UEs described elsewhere herein, such as Figure 1 UE 120. Thus, a direct link between UEs 120 (e.g., via a PC5 interface) may be referred to as a side link, and a direct link between network node 110 and UE 120 (e.g., via a Uu interface) may be referred to as an access link. Sidelink communications may be sent via the side link, and access link communications may be sent via the access link. Access link communications may be downlink communications (from network node 110 to UE 120) or uplink communications (from UE 120 to network node 110).

[0070] As indicated above, Figure 4 Provided as an example. Other examples can be compared with Figure 4 The examples described are different.

[0071] Figure 5 is a diagram of an example 500 associated with selecting resources for transmitting a TB via a sidelink channel according to the present disclosure. Figure 5 As shown, a WCD (eg, UE 120) may attempt to transmit using resources of an unlicensed spectrum or other sidelink channel, where the WCD attempts to reserve resources from a pool of available resources.

[0072] like Figure 5As shown, the WCD may sense occupancy or availability of resources in a sensing window 502. The WCD may monitor for reservations of resources within the sensing window, such as RSRP reservation transmission (Tx(1)) 504 or RSRP reservation transmission (Tx(2)) 506. The WCD may process the sensed signaling during T(proc,0) 510 to identify reservations within the sensing window 502.

[0073] Resource selection trigger 512 may identify resources expected to be available for sending communications. Resource selection trigger 512 may occur at time n, which may cause the WCD to examine sensing window 502 to identify a set of candidate resources in resource selection window 514 for sending communications. The WCD may identify available resources based at least in part on measuring the RSRP of RSRP reservation transmission 504 or 506. For example, the WCD may identify a resource as available based at least in part on the RSRP of an associated RSRP reservation transmission failing to meet an RSRP threshold. Conversely, the WCD may identify a resource as unavailable (or occupied) based at least in part on the RSRP of an associated RSRP reservation transmission meeting an RSRP threshold. The WCD's physical (PHY) layer may measure the RSRP and provide an indication of available resources to the WCD's medium access control (MAC) layer.

[0074] Resource selection window 514 may begin at time T(1) 516 after resource selection trigger 512 and may end when a packet delay budget associated with the communication expires. Time T(1) may be based at least in part on the capabilities of the WCD. Time T(1) 516 and the length of resource selection window 514 may be defined as time T(2) 518.

[0075] The WCD (eg, a MAC layer of the WCD) may (eg, randomly) select resources for transmitting a TB associated with the resource selection trigger 512 and the packet delay budget. For example, the WCD may select selected resources 520 for transmitting the TB.

[0076] At time T(3) before the selected resource 520, the WCD may perform a re-evaluation check 522 to determine whether the selected resource 520 is still available. For example, the WCD may check for new reservations collected between the selection time and T(3). If the re-selection check fails (e.g., the selected resource 520 is not currently available), the WCD may perform a re-selection of a new resource for sending the TB.

[0077] Figure 6 is a diagram of an example 600 associated with selecting resources for transmitting a TB via a sidelink channel according to the present disclosure. Figure 6 As shown, a WCD (eg, UE 120) may attempt to transmit using resources of an unlicensed spectrum or other sidelink channel, where the WCD attempts to reserve resources from a pool of available resources.

[0078] like Figure 6 As shown, the WCD may monitor reservations 614 during a sensing window 602. The WCD may receive a trigger 604 for transmission of a TB within the sensing window 602. The WCD may randomly select a resource for transmitting the TB within a selection window 606. For example, the WCD may select a first selected resource 608 for transmitting the TB.

[0079] At time T(3) 610 before the first selected resource 608, the WCD may perform a re-evaluation check to determine whether the first selected resource 608 is still available. If the first selected resource 608 is not available, the WCD may reselect a first updated selected resource 612. In such an example, the WCD should perform a new re-evaluation at time T(3) before the first updated selected resource 612.

[0080] Some networks may support multiple consecutive slot transmissions (MCSt) via a sidelink channel. MCSt may improve throughput under channel access constraints. For example, MCSt may allow a WCD to transmit within a maximum channel occupancy time (COT) duration (e.g., 6 ms after Type 1 channel access via Listen Before Talk (LBT) is cleared).

[0081] Some networks support enhanced Mode 2 reservation, where N1 slots are selected for N2 TBs and N1 > N2. In this way, reservation can select more resources than are needed to transmit a certain number of TBs. In some networks, the preemption of a single slot resource is sufficient to trigger reselection.

[0082] In some aspects described herein, a WCD may be configured to reselect resources for transmitting one or more TBs for sidelink communication. Some aspects more specifically relate to using a configuration that indicates whether to transmit the one or more TBs in association with the unavailability of one or more resources in a first set of resources selected for transmitting the one or more TBs. In some aspects, the configuration may indicate whether to transmit the one or more TBs via available resources (e.g., remaining resources that are not unavailable) in the first set of resources or to reselect a second set of resources for transmitting the one or more TBs.

[0083] In some aspects, the WCD may reselect a second resource set at least partially based on the available resources being insufficient to transmit one or more transport blocks (TBs), a threshold percentage of the first resource set being unavailable, or the amount of adjacent time slots failing to meet a threshold amount, etc. In some aspects, the WCD may reselect the second resource set to replace all resources in the first resource set. In some aspects, the WCD may transmit a first subset of one or more TBs via the available resources in the first resource set and transmit a second subset of one or more TBs via the second resource set.

[0084] In some aspects, the WCD may reselect a second resource set at least partially based on an availability check (such as a re-evaluation check failure or a listen-before-talk (LBT) failure, etc.). After the availability check fails, the WCD may evaluate whether the available resources in the first resource set are sufficient to serve a target amount of TBs (e.g., N2 < N1 TBs). If not, reselection is triggered. In some aspects, when the availability check fails, the amount of available resources is updated to N1' = N1 - x and compared with N2. In some aspects, failure to meet the MCSt configuration may trigger reselection (e.g., at least partially based on multi-time slot resources including gaps).

[0085] In some aspects, the reselection trigger may be based on the value N1' of the "remaining time slots" still available from the first resource set. For example, reselection may be triggered at least partially based on N1' < N2. In another example, reselection may be triggered at least partially based on K% of N1' < N2 (e.g., where K% may be predefined in the communication protocol or configurable). In some aspects, N1' = 0 is a valid case. In additional examples, reselection may be triggered at least partially based on N1' containing fewer than L adjacent time slots, where L may depend on N2 (e.g., L = N2) or L depends on N1.

[0086] In some aspects, when reselection is triggered, the WCD may reselect an amount of resources that may be equal to or less than the amount of resources in the first set of resources. For example, the WCD may reselect all multi-slot resources (N1 slots) in the first set of resources. The first set of resources may be deselected, and a selection of a second set of resources may be issued. In some aspects, the multi-slot resources may have been exhausted, and the WCD may have nothing to deselect. In some aspects, the WCD may reselect an amount of resources associated with the shortfall in resources required to transmit one or more TBs. For example, the selection of the first set of resources may be maintained, and a selection of the second set of resources may be issued for an amount of unavailable slots in the first set of resources, or for an amount of slots that is the difference between the amount of available slots in the first set of resources (N1') and the amount of resources required to transmit one or more TBs (N2). In some examples, for a given value of N1', reselection is triggered for multi-slot resources of at least length N2-N1' (e.g., K×(N2-N1')).

[0087] In some aspects, for LBT failures (causing a trigger for reselection), reselection may occur at a configured time. For example, reselection may occur at the time at which transmission is intended to begin. This is the time at which the LBT failure will be recorded. Alternatively, reselection may occur at a time when the WCD finds that it is impossible to complete the countdown associated with LBT in time to start transmission at the boundary of the selected time slot. The WCD may check whether the remaining countdown can be completed before transmission, and if not, update the remaining selected time slot amount. If the remaining resources are sufficient to transmit one or more TBs, the WCD may shift the target for starting transmission to the next time slot boundary and ultimately trigger reselection if a threshold is met or the remaining resources are insufficient to transmit one or more TBs. In some aspects, reselection may occur at the time of any clear channel assessment (CCA) attempt (e.g., every 9 microseconds) or periodically (e.g., every K CCA attempts or every time slot).

[0088] Certain aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. In some examples, the described techniques can be used to transmit all or a subset of TBs using available resources in a resource set when efficient. In this way, the WCD can use available resources rather than wasting them and reselecting a new full resource set. This can improve spectral efficiency and latency in the associated network by conserving network resources that might otherwise be wasted or selected from a new full resource set.

[0089] Figure 7 is a diagram of an example 700 associated with selecting and reselecting resources for transmission according to the present disclosure. Figure 7As shown, a WCD (e.g., UE 120) may communicate with one or more additional WCDs in a sidelink channel of a wireless network (e.g., wireless network 100). The WCD and the one or more additional WCDs may communicate using a sidelink communication protocol.

[0090] The WCD may select a first set of resources for transmitting one or more TBs, as shown in a first operation 705. In some aspects, the first set of resources includes more resources than required to transmit the one or more TBs to be transmitted via the first set of resources.

[0091] As shown in the second operation 710, the WCD may send an indication of selecting the first set of resources. For example, the WCD may send an RSRP reservation Tx message to reserve the first set of resources. In an alternative, the WCD may not send an indication of the selection to one or more additional WCDs.

[0092] As shown in third operation 715, the WCD may perform one or more assessments of the availability of the first set of resources. The WCD may perform the one or more assessments after selecting the first set of resources. In some aspects, the WCD may perform different assessment checks for respective resources in the first set of resources. For example, the WCD may perform a first reassessment check associated with a first resource in the one or more resources and a second reassessment check associated with a second resource in the one or more resources. In such an example, detecting the unavailability of the one or more resources includes detecting the availability of the first resource based on the first reassessment check and detecting the availability of the second resource based on the second reassessment check. In this manner, the availability of different resources in the first set of resources may be detected separately.

[0093] In some aspects, the one or more assessments of the availability of one or more resources may include performing a reassessment check associated with the one or more resources. In some aspects, the WCD may perform the reassessment check at periodic intervals or based at least in part on channel conditions (e.g., a channel busy rate (CBR) measurement or LBT failure).

[0094] In some aspects, one or more assessments of the availability of one or more resources may include performing an LBT check associated with the one or more resources. In some aspects, the WCD may detect a failure of the LBT check and detect the unavailability of the one or more resources at the beginning of a first resource in time among the unavailable one or more resources. In some aspects, the WCD may detect the unavailability of the one or more resources before the beginning of the first resource in time based on the fact that a successful LBT check cannot be completed before the beginning of the first resource in time (e.g., when a countdown identified to the LBT check is greater than the amount of time remaining before the beginning of the first resource in time). In some aspects, the WCD may detect the unavailability of the one or more resources after an unsuccessful CCA attempt. In some aspects, the WCD may detect the unavailability of the one or more resources at periodic times after determining that a successful LBT check cannot be completed before the beginning of the first resource in time.

[0095] As shown in a fourth operation 720, the WCD may detect unavailability of one or more resources in the first set of resources.

[0096] Operations 725-740 discussed below may be performed as alternatives based at least in part on detecting the unavailability of one or more resources in the first set of resources. For example, the fifth operation 725 may be the first alternative, the sixth operation 730 may be the second alternative, and the seventh operation 735 and the ninth operation 740 may be the third alternative, etc. The WCD may be configured to perform only one of the alternatives or may be configured with a condition for selecting one of the alternatives.

[0097] As shown in fifth operation 725, the WCD may transmit one or more TBs via one or more available time slots (e.g., available resources) of the first set of resources. In some aspects, the WCD may transmit the one or more TBs via the one or more available time slots of the first set of resources based at least in part on: the one or more available time slots being sufficient to transmit the one or more TBs, a ratio of an amount of available resources in the first set of resources to an amount of resources required to transmit the one or more TBs satisfying a threshold ratio, or an amount of contiguous resources in the available resources in the first set of resources satisfying a threshold amount of contiguous resources, etc. In some aspects, the basis for transmitting the one or more TBs via the one or more available resources may be indicated in a communication protocol or via a configuration associated with a sidelink channel.

[0098] As shown in sixth operation 730, the WCD may reselect a second set of resources for transmitting the one or more TBs. In some aspects, the WCD may anticipate transmitting the one or more TBs via the second set of one or more resources. However, the WCD may perform one or more assessments of the availability of the second set of resources before transmitting the one or more TBs via the second set. If the second set of resources becomes unavailable, the WCD may reselect resources.

[0099] In some aspects, the WCD may reselect a second set of resources for sending one or more TBs based at least in part on: the amount of available resources in the first set of resources is insufficient to send the one or more TBs, the ratio of the amount of available resources in the first set of resources to the amount of resources required to send the one or more TBs fails to meet a threshold ratio, or the amount of contiguous resources in the available resources in the first set of resources fails to meet a threshold amount of contiguous resources.

[0100] In some aspects, the WCD may cancel available resources in the first set of resources based at least in part on reselecting the second set of resources.In some aspects, the WCD may cancel available resources in the first set of resources via sending an indication to cancel a reservation of the available resources.

[0101] The WCD may reselect a third set of one or more resources for transmitting the first subset of TBs, as shown in a seventh operation 735. In some aspects, an amount of resources in the third set of resources is based at least in part on an amount of the one or more resources that are unavailable in the first set of resources, or an amount of additional resources required to transmit the one or more TBs based on unavailability of the one or more resources that are unavailable.

[0102] In some aspects, the WCD may reselect a third set of resources for sending one or more TBs based at least in part on: the amount of available resources in the first set of resources is insufficient to send the one or more TBs, the ratio of the amount of available resources in the first set of resources to the amount of resources required to send the one or more TBs fails to meet a threshold ratio, or the amount of contiguous resources in the available resources in the first set of resources fails to meet a threshold amount of contiguous resources.

[0103] As shown in eighth operation 740, the WCD may transmit a second subset of the one or more TBs via one or more available time slots of the first set of resources. In some aspects, the WCD may anticipate transmitting the first subset of the one or more TBs via a third set of one or more resources. However, the WCD may perform one or more assessments of the availability of the third set of one or more resources before transmitting the first subset of the one or more TBs via the third set of one or more resources. If the third set of resources becomes unavailable, the WCD may reselect resources.

[0104] Based at least in part on allowing the WCD to use remaining resources in the first set of resources to transmit one or more TBs or a subset of one or more TBs after detecting the unavailability of one or more resources in the first set of resources, the WCD may use the available resources instead of wasting the available resources and reselecting a new full set of resources. This may improve spectral efficiency and latency in an associated network by conserving network resources that might otherwise be wasted or selected in a new full set of resources.

[0105] Figure 8 is a diagram of an example 800 associated with selecting and reselecting resources for transmission according to the present disclosure. Figure 8 As shown, a WCD (e.g., UE 120) may attempt to transmit using resources of an unlicensed spectrum or other sidelink channel, where the WCD attempts to reserve resources from a pool of available resources. In some aspects, the WCD may have selected a first set of resources for transmitting one or more TBs.

[0106] like Figure 8 As shown, the WCD may perform a first re-evaluation check 802 and a second re-evaluation check 804 associated with the first set of resources. For example, the WCD may check for new reservations collected between the selection time and T(3,1) 806 to perform the first re-evaluation check 802. Similarly, the WCD may check for new reservations collected between the selection time and T(3,2) 808 to perform the second re-evaluation check 804. The first re-evaluation check 802 and T(3,1) 806 may be associated with a resource in the first set of resources at time slot n 810. The second re-evaluation check 804 and T(3,2) 808 may be associated with a resource in the first set of resources at time slot n+1 812.

[0107] The WCD may perform an LBT check 814 prior to time slot n 810. The LBT check 814 may have a duration during which the subchannel must be idle for the WCD to transmit during the selected resource. Time slot n 810 may be associated with a first LBT completion deadline 816, and time slot n+1 812 may be associated with a second LBT completion deadline 818. If the LBT check 814 is not completed before the first LBT completion deadline 816, the resources at time slot n 810 may not be available for transmitting one or more TBs. If the LBT check 814 is not completed before the second LBT completion deadline 818, the resources at time slot n+1 812 may not be available for transmitting one or more TBs.

[0108] In the following example, the amount of selected resources (eg, time slots) is 2, and the amount of resources required to transmit one or more TBs is 1 (eg, 1 time slot).

[0109] In a first example of performing an evaluation check, the first re-evaluation check 802 may fail, the second re-evaluation check 804 may pass, and time slot n 810 may pass the LBT check 814. In such an example, the WCD may not transmit during time slot n 810. However, the WCD may transmit during time slot n+1 812 based at least in part on passing the second re-evaluation check 804 and passing the LBT check 814 (e.g., passing the first LBT completion deadline 816 may imply passing the second LBT completion deadline 818). In some aspects, the WCD may transmit one or more TBs without reselecting.

[0110] In a second example of performing re-evaluation checks, the first re-evaluation check 802 may fail and the second re-evaluation check 804 may fail. In such an example, the WCD may not transmit during time slot n 810 or during time slot n+1 812. Therefore, the WCD may trigger reselection.

[0111] In a third example of performing evaluation checks, the first re-evaluation check 802 may pass, the second re-evaluation check 804 may fail, and time slot n 810 may fail the LBT check 814. In such an example, the WCD may not transmit during time slot n 810 or during time slot n+1 812 based at least in part on both time slots failing the evaluation for availability. As a result, the WCD may trigger reselection.

[0112] In a fourth example of performing evaluation checks, the first re-evaluation check 802 may pass, the second re-evaluation check 804 may pass, time slot n 810 may fail the LBT check 814, and time slot n+1 812 may pass the LBT check 814. In such an example, the WCD may not transmit during time slot n 810. However, the WCD may transmit during time slot n+1 812 based at least in part on passing the second re-evaluation check 804 and passing the LBT check 814. In some aspects, the WCD may transmit one or more TBs without reselecting.

[0113] In a fifth example of performing evaluation checks, the first re-evaluation check 802 may pass, the second re-evaluation check 804 may pass, time slot n 810 may fail the LBT check 814, and time slot n+1 812 may fail the LBT check 814. In such an example, the WCD may not transmit during time slot n 810 or during time slot n+1 812 based at least in part on both time slots failing the evaluation for availability. As a result, the WCD may trigger reselection.

[0114] Figure 9is a diagram illustrating an example process 900 performed, for example, by a WCD, in accordance with the present disclosure. Example process 900 is an example of a WCD (eg, UE 120) performing operations associated with selecting and reselecting resources for transmission.

[0115] like Figure 9 As shown, in some aspects, process 900 may include performing one or more evaluations of the availability of a first set of resources after selecting the first set of resources for transmitting one or more TBs (block 910). For example, a WCD (e.g., using Figure 10 The communication manager 1006 depicted in FIG may perform one or more evaluations of the availability of the first set of resources after selecting the first set of resources for sending one or more TBs, as described above.

[0116] like Figure 9 As further shown, in some aspects, process 900 may include, in association with the unavailability of one or more resources in the first set of resources, performing one of: transmitting one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or reselecting a third set of resources for transmitting the first subset of the one or more TBs and transmitting the second subset of the one or more TBs on the subset of the first set of resources (block 920). For example, a WCD (e.g., using Figure 10 The communication manager 1006 depicted in the figure may perform one of the following in association with the unavailability of one or more resources in the first resource set: sending one or more TBs via one or more available time slots of the first resource set; reselecting a second resource set for sending the one or more TBs and sending the one or more TBs via the second resource set; or reselecting a third resource set for sending a first subset of the one or more TBs and sending a second subset of the one or more TBs on a subset of the first resource set, as described above.

[0117] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below or in conjunction with one or more other processes described elsewhere herein.

[0118] In a first aspect, process 900 includes selecting a first set of resources, where the first set of resources includes more resources than required to transmit one or more TBs.

[0119] In a second aspect, alone or in combination with the first aspect, performing one or more assessments of the availability of one or more resources includes one or more of: performing a reassessment check associated with the one or more resources, or performing an LBT check associated with the one or more resources.

[0120] In a third aspect, alone or in combination with one or more of the first and second aspects, performing a reassessment check associated with one or more resources includes one or more of the following: performing a first reassessment check associated with a first resource among the one or more resources, or performing a second reassessment check associated with a second resource among the one or more resources, wherein detecting unavailability of one or more resources includes detecting the availability of the first resource based on the first reassessment check and detecting the availability of the second resource based on the second reassessment check.

[0121] In a fourth aspect, either alone or in combination with one or more of aspects one to three, performing reassessment checks associated with one or more resources includes one or more of: performing reassessment checks at periodic intervals, or performing reassessment checks based at least in part on channel conditions.

[0122] In a fifth aspect, alone or in combination with one or more of aspects one to four, performing an LBT check associated with one or more resources includes performing a first LBT check associated with a first resource among the one or more resources and performing a second LBT check associated with a second resource among the one or more resources, wherein detecting unavailability of one or more resources includes detecting the availability of the first resource based on the first LBT check and detecting the availability of the second resource based on the second LBT check.

[0123] In a sixth aspect, alone or in combination with one or more of aspects one to five, performing an LBT check associated with one or more resources includes detecting a failure of the LBT check and detecting unavailability of the one or more resources in the following circumstances: at the beginning of a temporally first resource among the unavailable one or more resources; before the beginning of the temporally first resource based on the fact that a successful LBT check cannot be completed before the beginning of the temporally first resource; after an unsuccessful CCA attempt; or at periodic times after determining that a successful LBT check cannot be completed before the beginning of the temporally first resource.

[0124] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, sending one or more TBs via one or more available time slots of the first resource set is based on one or more of the following: the one or more available time slots are sufficient to send one or more TBs; the ratio of the amount of available resources in the first resource set to the amount of resources required to send one or more TBs satisfies a threshold ratio; or the amount of adjacent resources in the available resources in the first resource set satisfies a threshold amount of adjacent resources.

[0125] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, reselecting the second resource set or reselecting the third resource set is based on one or more of the following: the amount of available resources in the first resource set is insufficient to send one or more TBs; the ratio of the amount of available resources in the first resource set to the amount of resources required to send one or more TBs fails to meet a threshold ratio; or the amount of adjacent resources in the available resources in the first resource set fails to meet a threshold amount of adjacent resources.

[0126] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the reselection of the second set of resources includes canceling available resources in the first set of resources.

[0127] In the tenth aspect, alone or in combination with one or more of the first to ninth aspects, the amount of resources in the second resource set or the third resource set is based on the amount of one or more resources that are unavailable in the first resource set, or the amount of additional resources required to send one or more TBs based on the unavailability of the unavailable one or more resources.

[0128] although Figure 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Figure 9 900. In some embodiments, the process 900 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 900 may be performed in parallel.

[0129] Figure 10 1 is a diagram of an example apparatus 1000 for wireless communication according to the present disclosure. Apparatus 1000 may be a WCD, or a WCD may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002, a sending component 1004, and / or a communication manager 1006 that may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1006 is a communication manager that is configured to communicate with one another. Figure 1 The described communication manager 140. As shown, the device 1000 can communicate with another device 1008, such as a UE or a network node (such as a CU, DU, RU, or base station), using a receiving component 1002 and a sending component 1004.

[0130] In some aspects, the apparatus 1000 may be configured to perform Figures 7 and 8 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more of the processes described herein, such as Figure 9 In some aspects, the apparatus 1000 or Figure 10 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, one or more components of the WCD described. Figure 10 One or more of the components shown may be combined Figure 2 Additionally or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that is 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.

[0131] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1008. The receiving component 1002 may provide the received communications to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 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 apparatus 1000. In some aspects, the receiving component 1002 may include a processor coupled to a processor. Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described WCDs.

[0132] The transmitting component 1004 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1008. In some aspects, one or more other components of the apparatus 1000 may generate communications and may provide the generated communications to the transmitting component 1004 for transmission to the apparatus 1008. In some aspects, the transmitting component 1004 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 apparatus 1008. In some aspects, the transmitting component 1004 may include a combination of Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described WCD. In some aspects, transmit component 1004 can be co-located with receive component 1002 in a transceiver.

[0133] The communications manager 1006 can support the operation of the receiving component 1002 or the sending component 1004. For example, the communications manager 1006 can receive information associated with configuring the receipt of communications by the receiving component 1002 or the sending of communications by the sending component 1004. Additionally or alternatively, the communications manager 1006 can generate or provide control information to the receiving component 1002 or the sending component 1004 to control the receipt or sending of communications.

[0134] The communication manager 1006 may perform one or more evaluations of the availability of the first resource set after selecting the first resource set for transmitting the one or more TBs. The communication manager 1006 may selectively perform one of the following in association with the unavailability of one or more resources in the first resource set: transmitting the one or more TBs via one or more available time slots of the first resource set; reselecting a second resource set for transmitting the one or more TBs and transmitting the one or more TBs via the second resource set; or reselecting a third resource set for transmitting the first subset of the one or more TBs and transmitting the second subset of the one or more TBs on the subset of the first resource set.

[0135] The communications manager 1006 may select a first set of resources, wherein the first set of resources includes more resources than required to transmit the one or more TBs.

[0136] Figure 10 The quantities and arrangements of the components shown are provided as examples. In practice, there may be Figure 10 The components shown may include additional components, fewer components, different components, or components arranged in a different manner. Figure 10 Two or more components shown may be implemented in a single component, or Figure 10 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 10 The illustrated set of component(s) may be described as being executable by Figure 10 Another component shown as a collection of components performs one or more functions.

[0137] The following provides an overview of some aspects of the disclosure:

[0138] Aspect 1: A method of wireless communication performed by a wireless communication device (WCD), the method comprising: performing one or more evaluations of the availability of a first set of resources for sending one or more transport blocks (TBs) after selecting the first set of resources; and performing one of the following in association with the unavailability of one or more resources in the first set of resources: sending the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for sending the one or more TBs and sending the one or more TBs via the second set of resources; or reselecting a third set of resources for sending a first subset of the one or more TBs and sending a second subset of the one or more TBs on a subset of the first set of resources.

[0139] Aspect 2: The method according to aspect 1, further comprising selecting the first set of resources, wherein the first set of resources includes more resources than required to transmit the one or more TBs.

[0140] Aspect 3: A method according to any one of Aspects 1 to 2, wherein performing the one or more assessments of the availability of the one or more resources includes one or more of the following: performing a reassessment check associated with the one or more resources, or performing a listen-before-talk (LBT) check associated with the one or more resources.

[0141] Aspect 4: A method according to Aspect 3, wherein performing the reassessment check associated with the one or more resources includes one or more of the following: performing a first reassessment check associated with a first resource among the one or more resources; or performing a second reassessment check associated with a second resource among the one or more resources, wherein detecting the unavailability of the one or more resources includes detecting the availability of the first resource in association with the first reassessment check and detecting the availability of the second resource in association with the second reassessment check.

[0142] Aspect 5: The method of aspect 3, wherein performing the reassessment check associated with the one or more resources comprises one or more of: performing the reassessment check at periodic intervals, or performing the reassessment check based at least in part on channel conditions.

[0143] Aspect 6: A method according to Aspect 3, wherein performing the LBT check associated with the one or more resources includes: performing a first LBT check associated with a first resource among the one or more resources; and performing a second LBT check associated with a second resource among the one or more resources, wherein detecting the unavailability of the one or more resources includes detecting the availability of the first resource in association with the first LBT check and detecting the availability of the second resource in association with the second LBT check.

[0144] Aspect 7: A method according to Aspect 3, wherein performing the LBT check associated with the one or more resources includes detecting a failure of the LBT check and detecting the unavailability of the one or more resources in the following circumstances: at the beginning of a first resource in time among the one or more resources that are unavailable; before the beginning of the first resource in time in association with an inability to complete a successful listen-before-talk (LBT) check before the beginning of the first resource in time; after an unsuccessful clear channel assessment (CCA) attempt; or at periodic times after determining that the successful LBT check cannot be completed before the beginning of the first resource in time.

[0145] Aspect 8: A method according to any one of Aspects 1 to 7, wherein sending the one or more TBs via the one or more available time slots of the first resource set is associated with one or more of the following: the one or more available time slots are sufficient to send the one or more TBs; the ratio of the amount of available resources in the first resource set to the amount of resources required to send the one or more TBs satisfies a threshold ratio; or the amount of adjacent resources in the available resources in the first resource set satisfies a threshold amount of adjacent resources.

[0146] Aspect 9: A method according to any one of Aspects 1 to 8, wherein reselecting the second resource set or reselecting the third resource set is associated with one or more of the following: the amount of available resources in the first resource set is insufficient to send the one or more TBs; the ratio of the amount of available resources in the first resource set to the amount of resources required to send the one or more TBs fails to meet a threshold ratio; or the amount of adjacent resources in the available resources in the first resource set fails to meet a threshold amount of adjacent resources.

[0147] Aspect 10: The method according to any one of aspects 1 to 9, wherein reselecting the second set of resources comprises canceling available resources in the first set of resources.

[0148] Aspect 11: A method according to any one of Aspects 1 to 10, wherein the amount of resources in the second resource set or the third resource set is associated with: the amount of the one or more resources that are unavailable in the first resource set; or the amount of additional resources required to send the one or more TBs in association with the unavailability of the one or more unavailable resources.

[0149] Aspect 12: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in aspects 1 to 11.

[0150] Aspect 13: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 11.

[0151] Aspect 14: 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 11.

[0152] Aspect 15: 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 11.

[0153] Aspect 16: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, 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 11.

[0154] While the foregoing disclosure provides illustration and description, it is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0155] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware or hardware and software. "Software" should be broadly interpreted as meaning an instruction, an instruction set, a code, a code segment, a program code, a program, a subroutine, a software module, an application, a software application, a software package, a routine, a subroutine, an object, an executable program, a thread of execution, a process or a function, etc., whether it is described in software, firmware, middleware, microcode, hardware description language or other terms. As used herein, a "processor" is implemented with hardware or a combination of hardware and software. It will be apparent that the system or method described herein can be implemented in different forms of hardware or a combination of hardware and software. The actual dedicated control hardware or software code for implementing these systems or methods does not limit various aspects. Therefore, the operation and behavior of these systems or methods are described herein without reference to specific software code, because those skilled in the art will understand that software and hardware can be designed to implement these systems or methods at least in part based on the description herein.

[0156] As used herein, "satisfying a threshold" may mean that a value is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0157] Although specific combinations of features are described in the claims 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 not specifically described in the claims or 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" a list of items refers to any combination of these items (which includes a single member). As an example, "at least one of the following: a, b, or c" is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination of multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other arrangement of a, b, and c).

[0158] Any element, action or instruction used herein should not be interpreted as key or necessary unless explicitly described as such. In addition, as used herein, the articles "one" and "a kind of" are intended to include one or more projects and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more projects connected with the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "group" and "cluster" are intended to include one or more projects and can be used interchangeably with "one or more". If only want to refer to a project, then use the phrase "only one" or similar terms. Moreover, as used herein, the terms "having", "containing", "comprising" and similar terms are intended to be open terms, which do not limit the elements they modify (for example, element "comprising" A can also contain B). In addition, the phrase "based on" is intended to represent "at least partially based on", unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used continuously is intended to be inclusive and is used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A wireless communication device (WCD) for wireless communication, the wireless communication device (WCD) comprising: a processing system comprising one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the WCD to: performing one or more evaluations of availability of a first set of resources after selecting the first set of resources for transmitting one or more transport blocks (TBs); and In association with the unavailability of one or more resources in the first set of resources, performing one of the following: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or A third set of resources for transmitting the first subset of the one or more TBs is reselected and a second subset of the one or more TBs is transmitted on a subset of the first set of resources.

2. The WCD of claim 1 , wherein the processing system is further configured to cause the WCD to select the first set of resources, and The first set of resources includes more resources than required to send the one or more TBs.

3. The WCD of claim 1 , wherein, to cause the WCD to perform the one or more evaluations of the availability of the one or more resources, the processing system is configured to cause the WCD to: performing a re-evaluation check associated with the one or more resources, or A listen-before-talk (LBT) check associated with the one or more resources is performed.

4. The WCD of claim 3 , wherein to cause the WCD to perform the reassessment check associated with the one or more resources, the processing system is configured to cause the WCD to: performing a first re-evaluation check associated with a first resource of the one or more resources; or performing a second re-evaluation check associated with a second resource of the one or more resources, and wherein the processing system is further configured to cause the WCD to: detecting availability of the first resource in association with the first reassessment check; and In association with the second reassessment check, the availability of the second resource is detected.

5. The WCD of claim 3 , wherein to cause the WCD to perform the reassessment check associated with the one or more resources, the processing system is configured to cause the WCD to: Perform said re-evaluation check at periodic intervals, or The reassessment check is performed based at least in part on channel conditions.

6. The WCD of claim 3 , wherein to cause the WCD to perform the LBT check associated with the one or more resources, the processing system is configured to cause the WCD to: performing a first LBT check associated with a first resource of the one or more resources; and performing a second LBT check associated with a second resource of the one or more resources, In order for the WCD to detect the unavailability of the one or more resources, the processing system is configured to cause the WCD to: detecting availability of the first resource in association with the first LBT check; and In association with the second LBT check, availability of the second resource is detected.

7. The WCD of claim 3 , wherein, in order for the WCD to perform the LBT check associated with the one or more resources, the processing system is configured to cause the WCD to detect a failure of the LBT check and to detect the unavailability of the one or more resources if: At the beginning of a temporally first resource of the one or more resources that is unavailable, Prior to said starting of the first resource at said time, in association with a failure to complete a successful listen-before-talk (LBT) check, After an unsuccessful Clear Channel Assessment (CCA) attempt, or At a periodic time after determining that said successful LBT check cannot be completed before said start of said first resource at said time.

8. The WCD of claim 1 , wherein transmitting the one or more TBs via the one or more available time slots of the first set of resources is associated with one or more of: The one or more available time slots are sufficient to transmit the one or more TBs, A ratio of the amount of available resources in the first resource set to the amount of resources required to send the one or more TBs satisfies a threshold ratio, or An amount of contiguous resources in the available resources in the first set of resources satisfies a threshold amount of contiguous resources.

9. The WCD of claim 1 , wherein reselecting the second set of resources or reselecting the third set of resources is associated with one or more of: an amount of available resources in the first set of resources is insufficient to transmit the one or more TBs, a ratio of the amount of available resources in the first set of resources to the amount of resources required to transmit the one or more TBs fails to satisfy a threshold ratio, or The amount of contiguous resources in the available resources in the first set of resources fails to meet a threshold amount of contiguous resources.

10. The WCD of claim 1, wherein in order for the WCD to reselect the second set of resources, the processing system is configured to cause the WCD to cancel available resources in the first set of resources.

11. The WCD of claim 1 , wherein the amount of resources in the second set of resources or the third set of resources is associated with: the amount of the one or more resources in the first set of resources that are unavailable, or an amount of additional resources required to send the one or more TBs in association with the unavailability of the one or more resources that are unavailable.

12. A method of wireless communication performed by a wireless communication device (WCD), the method comprising: performing one or more evaluations of availability of a first set of resources after selecting the first set of resources for transmitting one or more transport blocks (TBs); as well as In association with the unavailability of one or more resources in the first set of resources, performing one of the following: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or A third set of resources for transmitting the first subset of the one or more TBs is reselected and a second subset of the one or more TBs is transmitted on a subset of the first set of resources.

13. The method according to claim 12, further comprising selecting the first resource set, The first set of resources includes more resources than required to send the one or more TBs.

14. The method of claim 12, wherein performing the one or more assessments of the availability of the one or more resources comprises one or more of: performing a re-evaluation check associated with the one or more resources, or A listen-before-talk (LBT) check associated with the one or more resources is performed.

15. The method of claim 14, wherein performing the reassessment check associated with the one or more resources comprises one or more of: performing a first re-evaluation check associated with a first resource of the one or more resources; or A second reassessment check is performed in association with a second resource of the one or more resources, wherein detecting unavailability of the one or more resources comprises detecting availability of the first resource in association with the first reassessment check and detecting availability of the second resource in association with the second reassessment check.

16. The method of claim 14, wherein performing the reassessment check associated with the one or more resources comprises one or more of: Perform said re-evaluation check at periodic intervals, or The reassessment check is performed based at least in part on channel conditions.

17. The method of claim 14, wherein performing the LBT check associated with the one or more resources comprises: performing a first LBT check associated with a first resource of the one or more resources; as well as performing a second LBT check associated with a second resource of the one or more resources, Wherein detecting unavailability of the one or more resources comprises detecting availability of the first resource in association with the first LBT check and detecting availability of the second resource in association with the second LBT check.

18. The method of claim 14, wherein performing the LBT check associated with the one or more resources comprises detecting a failure of the LBT check and detecting the unavailability of the one or more resources if: At the beginning of a temporally first resource of the one or more resources that is unavailable, Prior to said starting of the first resource at said time, in association with a failure to complete a successful listen-before-talk (LBT) check, After an unsuccessful Clear Channel Assessment (CCA) attempt, or At a periodic time after determining that said successful LBT check cannot be completed before said start of said first resource at said time.

19. The method of claim 12, wherein transmitting the one or more TBs via the one or more available time slots of the first set of resources is associated with one or more of: The one or more available time slots are sufficient to transmit the one or more TBs, A ratio of the amount of available resources in the first resource set to the amount of resources required to send the one or more TBs satisfies a threshold ratio, or An amount of contiguous resources in the available resources in the first set of resources satisfies a threshold amount of contiguous resources.

20. The method of claim 12, wherein reselecting the second set of resources or reselecting the third set of resources is associated with one or more of: an amount of available resources in the first set of resources is insufficient to transmit the one or more TBs, a ratio of the amount of available resources in the first set of resources to the amount of resources required to transmit the one or more TBs fails to satisfy a threshold ratio, or The amount of contiguous resources in the available resources in the first set of resources fails to meet a threshold amount of contiguous resources.

21. The method of claim 12, wherein reselecting the second set of resources comprises canceling available resources in the first set of resources.

22. The method of claim 12, wherein the amount of resources in the second resource set or the third resource set is associated with: the amount of the one or more resources in the first set of resources that are unavailable, or an amount of additional resources required to send the one or more TBs in association with the unavailability of the one or more resources that are unavailable.

23. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions that, when executed by one or more processors of a wireless communication device (WCD), cause the WCD to: performing one or more evaluations of availability of a first set of resources after selecting the first set of resources for transmitting one or more transport blocks (TBs); and In association with the unavailability of one or more resources in the first set of resources, performing one of the following: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or A third set of resources for transmitting the first subset of the one or more TBs is reselected and a second subset of the one or more TBs is transmitted on a subset of the first set of resources.

24. The non-transitory computer-readable medium of claim 23, wherein the one or more instructions further cause the WCD to select the first set of resources, and The first set of resources includes more resources than required to send the one or more TBs.

25. The non-transitory computer-readable medium of claim 23, wherein the one or more instructions that cause the WCD to perform the one or more evaluations of the availability of the one or more resources cause the WCD to: performing a re-evaluation check associated with the one or more resources, or A listen-before-talk (LBT) check associated with the one or more resources is performed.

26. The non-transitory computer-readable medium of claim 25, wherein the one or more instructions that cause the WCD to perform the reassessment check associated with the one or more resources cause the WCD to: performing a first re-evaluation check associated with a first resource of the one or more resources; or A second reassessment check is performed in association with a second resource of the one or more resources, wherein detecting unavailability of the one or more resources comprises detecting availability of the first resource in association with the first reassessment check and detecting availability of the second resource in association with the second reassessment check.

27. An apparatus for wireless communication, the apparatus comprising: means for performing one or more evaluations of availability of a first set of resources after selecting the first set of resources for transmitting one or more transport blocks (TBs); as well as Means for performing one of the following in association with unavailability of one or more resources in the first set of resources: transmitting the one or more TBs via one or more available time slots of the first set of resources; reselecting a second set of resources for transmitting the one or more TBs and transmitting the one or more TBs via the second set of resources; or A third set of resources for transmitting the first subset of the one or more TBs is reselected and a second subset of the one or more TBs is transmitted on a subset of the first set of resources.

28. The apparatus according to claim 27, further comprising means for selecting the first set of resources, The first set of resources includes more resources than required to send the one or more TBs.

29. The apparatus of claim 27, wherein the means for performing the one or more evaluations of the availability of the one or more resources comprises one or more of: means for performing a re-evaluation check associated with the one or more resources, or Means for performing a listen-before-talk (LBT) check associated with the one or more resources.

30. The apparatus of claim 29, wherein the means for performing the reassessment check associated with the one or more resources comprises one or more of: means for performing a first reassessment check associated with a first resource of the one or more resources; or means for performing a second re-evaluation check associated with a second resource of the one or more resources, The device further comprises: means for detecting availability of said first resource in association with said first reassessment check; as well as Means for detecting availability of the second resource in association with the second reassessment check.

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