Physical sidelink feedback channel transmission of discontinuous resource block sets in unlicensed sidelink communications

Abstract

Various aspects of the present disclosure generally relate to wireless communications. Some aspects of the techniques described herein may facilitate physical sidelink feedback channel (PSFCH) transmission of a set of discontinuous resource blocks (RBs). In some aspects, a user equipment (UE) may perform a PSFCH selection procedure to select PSFCH communications, and if remaining PSFCH communications are still located at a discontinuous RB set, the UE may continue to discard the PSFCH communications based on one or more rules. In some aspects, a UE may first perform a PSFCH drop operation to form continuous PSFCH transmissions between a set of RBs. If the PSFCH communication in the resulting set of consecutive RBs exceeds the UE capability, the UE may perform a PSFCH drop to select a PSFCH communication for transmission. In some aspects, a UE may form continuous PSFCH transmissions between a set of RBs using common interleaving.

Description

Technical Field

[0001] All aspects of this disclosure relate to wireless communication in general, and more specifically to techniques and apparatus for transmitting physical sidelink feedback channels for non-contiguous sets of resource blocks in unlicensed sidelink communication. Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems 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 issued by the 3rd Generation Partnership Project (3GPP).

[0003] The multiple access technologies mentioned above have been adopted in various telecommunications standards to provide a common protocol enabling different UEs to communicate at the 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 issued by 3GPP. NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink, and CP-OFDM or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to increase.

[0004] In unlicensed sidelink communication, a User Equipment (UE) can communicate with one or more other UEs via a sidelink channel. To improve communication reliability, the UE can use a feedback channel to send feedback indicating whether it has successfully received and decoded communication from one or more other UEs. Some UEs support simultaneous feedback signaling across contiguous resource block sets, while others support simultaneous feedback signaling across non-contiguous resource block sets. Summary of the Invention

[0005] Some aspects described herein relate to an apparatus for wireless communication at a user equipment (UE). The apparatus may include one or more memories storing processor-executable code and one or more processors coupled to the one or more memories. At least one of the one or more processors may be configured to cause the UE to monitor at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. At least one of the one or more processors may be configured to cause the UE to transmit a subset of Physical Sidelink Feedback Channel (PSFCH) communications from a Physical Sidelink Feedback Channel (PSFCH) communications set using a second set of multiple resource blocks (RBs) that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection procedure.

[0006] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories storing processor-executable code and one or more processors coupled to the one or more memories. At least one of the one or more processors may be configured to cause the UE to monitor at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. At least one of the one or more processors may be configured to cause the UE to transmit a subset of PSFCH communications in a PSFCH communications set using a second plurality of RB sets, the second plurality of RB sets being selected using a group-based selection operation from a first plurality of RB sets corresponding to the PSFCH communications set associated with the plurality of sidelink communications.

[0007] Some aspects described herein relate to an apparatus for performing wireless communication at a UE. The apparatus may include one or more memories storing processor-executable code and one or more processors coupled to the one or more memories. At least one of the one or more processors may be configured to cause the UE to monitor at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. At least one of the one or more processors may be configured to cause the UE to transmit a set of PSFCH communications associated with the plurality of sidelink communications in a plurality of non-contiguous RB sets, wherein at least one of the plurality of RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in the at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

[0008] Some aspects described herein relate to a method for wireless communication performed by a UE. The method may include monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The method may include transmitting a subset of PSFCH communications from a PSFCH communications set using a second set of multiple RBs that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection procedure.

[0009] Some aspects described herein relate to a method for wireless communication performed by a UE. The method may include monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The method may include transmitting a subset of PSFCH communications from a PSFCH communications set using a second set of RBs, the second set of RBs being selected from a first set of RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications using a group-based selection operation.

[0010] Some aspects described herein relate to a method for wireless communication performed by a UE. The method may include monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The method may include transmitting a set of PSFCH communications associated with the multiple sidelink communications in a non-contiguous set of RBs, wherein at least one of the multiple RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in the at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

[0011] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, the set of instructions enables the UE to monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. When executed by one or more processors of the UE, the set of instructions enables the UE to transmit a subset of PSFCH communications from a PSFCH communications set using a second set of multiple RBs that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection procedure.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, the set of instructions enables the UE to monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. When executed by one or more processors of the UE, the set of instructions enables the UE to transmit a subset of PSFCH communications from a PSFCH communications set using a second set of RBs, the second set of RBs being selected using a group-based selection operation from a first set of RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications.

[0013] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, the set of instructions enables the UE to monitor at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. When executed by one or more processors of the UE, the set of instructions enables the UE to transmit a set of PSFCH communications associated with the plurality of sidelink communications in a plurality of non-contiguous RB sets, wherein at least one of the plurality of RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in the at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The apparatus may include components for transmitting a subset of PSFCH communications from a PSFCH communications set using a second set of multiple RBs that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection process.

[0015] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for monitoring at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. The apparatus may include components for transmitting a subset of PSFCH communications in a PSFCH communications set using a second plurality of RB sets, the second plurality of RB sets being selected using a group-based selection operation from a first plurality of RB sets corresponding to the PSFCH communications set associated with the plurality of sidelink communications.

[0016] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for monitoring at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. The apparatus may include components for transmitting a set of PSFCH communications associated with the plurality of sidelink communications in a plurality of non-contiguous RB sets, wherein at least one of the plurality of RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in the at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

[0017] The entirety of the terms includes, as fully described with reference to the accompanying drawings and description, and as illustrated in the accompanying drawings and description, 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.

[0018] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics (both in their organization and operation) of the concepts disclosed herein, as well as their associated advantages, will be better understood in conjunction with the accompanying drawings, based on the following description. Each figure in the accompanying drawings is provided for illustrative and descriptive purposes and not as a definition of limitation of the claims. Attached Figure Description

[0019] To gain a full understanding of the foregoing features of this disclosure, a more detailed description of the invention, briefly summarized above, can be obtained by referring to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only some typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. The same reference numerals in different drawings may identify the same or similar elements.

[0020] Figure 1 This is a diagram illustrating an example of a wireless network.

[0021] Figure 2 This is a diagram illustrating an example UE communicating with a user equipment (UE) in a wireless network.

[0022] Figure 3 This is a diagram illustrating an example of sidelink communication.

[0023] Figure 4 This is an example diagram illustrating the waveform of the Physical Side Link Feedback Channel (PSFCH).

[0024] Figure 5 This is a diagram illustrating an example of simultaneous PSFCH transmission.

[0025] Figures 6A to 6C This is a diagram illustrating an example of PSFCH transmission associated with a non-contiguous set of resource blocks in unlicensed sidelink communication.

[0026] Figures 7A to 7C This is a diagram illustrating an example of PSFCH transmission associated with a non-contiguous set of resource blocks in unlicensed sidelink communication.

[0027] Figure 8 This is an example flowchart of a procedure performed at a UE or a device of a UE that supports simultaneous PSFCH communication transmission.

[0028] Figure 9 This is a flowchart of an example procedure performed at a UE or a device of a UE that supports simultaneous PSFCH transmission.

[0029] Figure 10 This is an example flowchart of a procedure performed at a UE or a device of a UE that supports simultaneous PSFCH communication transmission.

[0030] Figure 11 This is a diagram of an example device for wireless communication that supports simultaneous PSFCH communication transmission. Detailed Implementation

[0031] Various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of protection of this disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods implemented using structures, functionalities, or structures and functionalities other than or different from the various aspects of the disclosure set forth herein. Any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0032] Several aspects of a telecommunications system will now be presented with reference to various devices and techniques. These devices and techniques will be described in detail below and illustrated in the accompanying drawings by various boxes, 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 such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0033] User equipment (UE) can send Hybrid Automatic Repeat Request (HARQ) feedback to indicate whether the UE has received communication from another device. HARQ feedback may include an acknowledgment (ACK) indicating that the UE has successfully received communication from the other device, or a negative acknowledgment (NACK) indicating that the UE has not successfully received communication from the other device. In sidelink communication, the other device can be another UE, and HARQ feedback can be sent by the UE to the other UE via the Physical Sidelink Feedback Channel (PSFCH).

[0034] Interleaving is the basic unit of resource allocation (such as air interface resource allocation), characterized by any combination of frequency spans (e.g., which may be divided into subbands and / or subcarriers), time spans (e.g., which may be divided into subtime spans, such as slots and / or symbols), and / or one or more physical resource blocks (PRBs). Interleaving can be, for example, common interleaving or dedicated interleaving. In some examples, the resources of a common interleaving may be accessible to any UE and / or shared by multiple UEs, while the resources of a dedicated interleaving may be accessible to only a single UE at a given time. In some examples, each PSFCH transmission may occupy a single common interleaving and a certain number (e.g., K3) of dedicated PRBs. The number of dedicated PRBs may be, for example, one PRB, two PRBs, five PRBs, etc. In some other examples, each PSFCH transmission may occupy a single dedicated interleaving.

[0035] The Listen-Before-Speak (LBT) procedure can be used to regulate access to a channel. For example, a UE can use an LBT procedure to minimize collisions and interference between itself and one or more other UEs communicating on a sidelink channel. In one example, the UE can listen to the sidelink channel to identify whether it is being used for transmissions by one or more other UEs. If the UE identifies the channel as idle (e.g., not being used for transmissions by another UE), the UE can perform a transmission on the channel. Alternatively, if the UE identifies the channel as busy (e.g., being used for transmissions by another UE), the UE can wait for a period of time and can perform another LBT procedure to identify whether the channel is idle or busy.

[0036] In the first example, a UE receiving Physical Side Link Control Channel (PSCCH) or Physical Side Link Shared Channel (PSSCH) communication can perform PSFCH transmission at a candidate PSFCH transmission time if the UE failed to transmit at a previous PSFCH transmission time due to LBT failure. For example, if a UE receiving PSCCH / PSSCH communication fails to transmit at a previous PSFCH transmission time due to LBT failure, the UE can perform PSFCH transmission only at candidate PSFCH transmission times. In the second example, a UE receiving PSCCH / PSSCH communication can perform PSFCH transmission at all PSFCH transmission times within the Channel Occupied Time (COT). COT can indicate the time period during which communication between a first UE and a second UE will occur. A first UE, which can be referred to as the COT initiating UE, can establish the COT based on the time period to be used for communication with a second UE, which can be referred to as the responding UE. In one example, the first UE can identify the time period based on the amount of data to be sent to the second UE, and can establish the COT based on the identified time period. COT can be used, for example, to reserve one or more resources for communication between a first UE and a second UE during that time period, and / or can be used to measure one or more characteristics of the channel associated with COT, such as channel throughput or channel performance, etc.

[0037] In some examples, the UE may support PSFCH transmission on sets of contiguous and non-contiguous resource blocks (RBs). The UE may indicate the UE capabilities for supporting PSFCH transmission on sets of contiguous RBs and / or the UE capabilities for supporting PSFCH transmission on sets of non-contiguous RBs. In some examples, each PSFCH transmission may occupy one common interleaving and K3 dedicated PRBs. The cyclic shift on each of the K3 dedicated PRBs may be the same. In some examples, the cyclic shift on each PRB of the common interleaving may be determined based on the specific UE implementation.

[0038] In some examples, PSFCH communications can be sent on non-contiguous RB sets. For example, PSFCH communications associated with different links in different RB sets can be sent simultaneously. Support for PSFCH transmission on non-contiguous RB sets is limited by UE capabilities. Additionally, due to UE capabilities, there may be a limit to the maximum number of PSFCH communications that a UE can send simultaneously. In some examples, when the number of simultaneous PSFCH communications exceeds UE capabilities, the UE can select the PSFCH communications to send by performing a PSFCH selection procedure (in some examples, this may be referred to as simultaneous PSFCH transmission). The UE can perform the PSFCH selection procedure based on the following: information carried by the corresponding PSFCH communication, HARQ-ACK priority, conflict indication second, and / or an ascending order of priority values ​​of the information carried by the corresponding PSFCH communication. For example, the PSFCH selection procedure can be performed by discarding unselected PSFCH communications.

[0039] Because simultaneously transmitted PSFCH communications are associated with different links, PSFCH communications can be associated with non-contiguous RB sets. When the number of simultaneous PSFCH communications exceeds the UE's capacity, the UE can select PSFCH communications as described above. The result of PSFCH selection may still be non-contiguous, and therefore, a UE that does not support PSFCH transmission on non-contiguous RB sets may not be able to transmit one or more PSFCH communications.

[0040] Several aspects of the techniques described herein facilitate PSFCH transmission across non-contiguous RB sets. In some aspects, for example, the UE may perform the PSFCH selection procedure described above to select PSFCH communications (e.g., by discarding one or more PSFCH communications). If the remaining PSFCH communications are still located at non-contiguous RB sets, the UE may continue to discard PSFCH communications based on one or more rules until the remaining PSFCH communications are associated with a contiguous RB set. In some aspects, for example, the UE may perform an additional PSFCH selection procedure. For example, the UE may continue to discard PSFCH communications until contiguous PSFCH transmission is formed between RB sets.

[0041] In some aspects, the UE may select PSFCH communications based on a weighted priority value of PSFCH communications within the corresponding RB set (e.g., by discarding PSFCH communications). In some examples, this operation may be repeated until simultaneous transmission for PSFCH communications achieves consecutive RB sets. For example, in some aspects, the weighted priority value of PSFCH communications may be an average priority value, a highest priority value, and / or a lowest priority value. In some aspects, the weighted priority value may be based on the amount of PSFCH communications within each RB set (e.g., such that RB sets with more PSFCH communications are given priority). In some aspects, the UE may group RB sets with PSFCH communications into groups containing consecutive RB sets, calculate a weighted priority value for each group, and select the group with the lowest weighted priority value for transmission. In some aspects, the weighted priority value of the group may be based on the amount of PSFCH communications within the group (e.g., such that groups of RB sets with more PSFCH communications are given priority).

[0042] In some aspects, the UE may first perform a PSFCH discard operation to form consecutive PSFCH transmissions between RB sets. If the PSFCH communication in the resulting consecutive RB sets exceeds the UE's capacity, the UE may perform PSFCH discard to select PSFCH communication for transmission. For example, in some aspects, the UE may group RB sets with PSFCH communication into groups containing consecutive RB sets, calculate a weighted priority value for each group, and select the group with the lowest weighted priority value for transmission. In some aspects, the UE may determine the COT state of each RB set (e.g., whether each RB set is within or outside the COT), and may group RB sets with PSFCH communication of the same COT state into groups containing consecutive RB sets. The UE may calculate a weighted priority value for each group and select the group with the lowest weighted priority value for transmission. In some aspects, the UE may perform energy measurements associated with each RB set to determine the probability of LBT success, and may group RB sets into groups of consecutive RB sets with the same energy level. The UE may calculate a weighted priority value for each group and select the group with the lowest weighted priority value for transmission.

[0043] In some respects, the UE can use common interleaving to form consecutive PSFCH transmissions between RB sets.

[0044] Specific aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages.

[0045] In some examples, by performing an additional PSFCH selection procedure to discard PSFCH communications until consecutive PSFCH transmissions are formed between RB sets, some aspects can facilitate consecutive PSFCH transmissions for UEs that do not support non-consecutive PSFCH transmissions without introducing new operations, thereby improving network and / or device performance while minimizing complexity.

[0046] In some examples, by selecting PSFCH communications based on weighted priority values, aspects can implement a configurable process for PSFCH communication selection / dropping, which can be adapted to support the selection of a variety of PSFCH communications. In some examples, by using a weighted priority based on the amount of PSFCH communications within each RB set (e.g., making RB sets with more PSFCH communications preferred), aspects can facilitate increasing the number of PSFCH communications that can be sent simultaneously, thereby improving network reliability.

[0047] In some examples, by grouping RB sets into groups containing consecutive RB sets and selecting groups based on a weighted priority value of the groups, some aspects can facilitate more efficient selection of consecutive RB sets with higher priority (e.g., lower priority values) PSFCH communications, thereby improving network reliability and reducing the likelihood of retransmission of higher priority communications. In some aspects, by using a weighted priority based on the amount of PSFCH communications within each RB set (e.g., making RB sets with more PSFCH communications preferred), some aspects can facilitate increasing the number of PSFCH communications that can be sent simultaneously, thereby improving network reliability.

[0048] In some respects, by first establishing consecutive PSFCH transmissions between RB sets and then discarding PSFCHs only if the resulting consecutive RB sets exceed the UE's capacity, some aspects can facilitate maximizing the amount of PSFCH communication transmitted, thereby improving network reliability. In some respects, by selecting PSFCH communication based on COT status and / or energy level, some aspects can facilitate improving the possibility of transmitting PSFCH communication over reliable sidelink channels.

[0049] Figure 1This is a diagram illustrating an example of a wireless network. Wireless network 100 can be a 5G (e.g., NR) network or a 4G (e.g., LTE) network, or may include elements of a 5G (e.g., NR) network or elements of a 4G (e.g., LTE) network, etc. Wireless network 100 may include one or more network nodes 110 (shown as network node (NN) 110a, network node 110b, network node 110c, and network node 110d), one or more UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. Network node 110 is the entity that communicates with UE 120. As shown, network node 110 may include one or more network nodes. For example, network node 110 can be an aggregated network node, meaning that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). As another example, network node 110 can be a decomposed network node (sometimes referred to as a decomposed base station), meaning that network node 110 is configured to utilize a protocol stack that is physically or logically distributed among two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0050] In some examples, network node 110 is or includes network nodes (such as RUs) that communicate with UE 120 via a radio access link. In some examples, network node 110 is or includes network nodes (such as DUs) that communicate with other network nodes 110 via a fronthaul or midhaul link. In some examples, network node 110 is or includes network nodes (such as CUs) that communicate with other network nodes 110 via a midhaul link or with the core network via a backhaul link. In some examples, network node 110 (such as aggregated network node 110 or decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, or one or more DUs. Network node 110 may include, for example, NR network nodes, LTE network nodes, Node Bs, eNBs (e.g., in 4G), gNBs (e.g., in 5G), access points or transmit / receive points (TRPs), DUs, RUs, CUs, network mobility elements, core network nodes, network elements, network equipment, and / or RAN nodes. In some examples, network nodes 110 can interconnect with each other or to one or more other network nodes 110 in wireless network 100 using any suitable transport network through various types of fronthaul, midhaul, or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks).

[0051] Each network node 110 can provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), depending on the context in which the term is used, the term "cell" can refer to the coverage area of ​​network node 110 or a network node subsystem serving that coverage area.

[0052] Network node 110 can provide communication coverage for macrocells, picocells, femtocells, or another type of cell. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and allows unrestricted access by UE 120 with a service subscription. A picocell can cover a relatively small geographic area and allows unrestricted access by UE 120 with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a residential area) and allows restricted access by UE 120 associated with that femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). Network node 110 for macrocells may be referred to as a macro network node. Network node 110 for picocells may be referred to as a pico network node. Network node 110 for femtocells may be referred to as a femto network node or a home network node.

[0053] In some aspects, the term "base station" or "network node" may refer to an aggregated 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, "base station" or "network node" may refer to a CU, DU, RU, a near real-time (near RT) RAN intelligent controller (RIC), and / 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 geographical location or different geographical locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of that 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 can be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one base station function rather than another. Thus, a single device can include more than one base station.

[0054] Network controller 130 may be coupled to or communicate with a group of network nodes 110, and may provide coordination and control for these network nodes 110. Network controller 130 may communicate with network nodes 110 via a backhaul communication link. Network nodes 110 may also communicate directly with each other, or indirectly via a wireless or wired backhaul communication link. In some aspects, network controller 130 may be a CU or a core network device, or network controller 130 may include a CU or a core network device.

[0055] 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., network node 110 or UE 120) and transmit data transmissions to a downstream station (e.g., UE 120 or network node 110). A relay station may be a UE 120 that can relay transmissions for other UE 120s. Figure 1 In the example shown, network node 110d (e.g., a relay network node) can communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. The network node 110 that relays communication may be referred to as a relay station, relay network node, or relay.

[0056] UE 120 may be distributed throughout the 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 smartwatch, smart clothing, smart glasses (e.g., augmented reality (AR), virtual reality (VR), mixed reality, or extended reality (XR) headsets), 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 GPS device, a UE function of a network node, or any other suitable device configured to communicate via a wireless medium. Some UE 120 (e.g., UE 102a and 120e) can communicate directly using one or more sidelink channels (e.g., without network nodes acting as intermediaries for communication with each other).

[0057] Some UEs 120 may be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, or location tags that can communicate with network nodes, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UEs 120 may be included within a housing that houses the components of the UE 120, such as processor components or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.

[0058] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary for communication with each other). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols using, for example, a PC5 interface for direct communication), vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), or mesh networks. In such examples, UEs 120 may perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by network node 110. In other examples, two or more UEs 120 may communicate via vehicle-to-network-to-vehicle (V2N2V) protocols, for example, via a Uu interface using LTE and / or NR uplinks and downlinks.

[0059] In some aspects, the UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and transmit a subset of PSFCH communications in a PSFCH communications set using a second set of multiple RBs that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection process.

[0060] In some aspects, the communication manager 140 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and use a second set of multiple RBs to transmit a subset of PSFCH communications in a PSFCH communications set, the second set of multiple RBs being selected from a first set of multiple RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications using a group-based selection operation.

[0061] In some aspects, the communication manager 140 may monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and transmit a set of PSFCH communications associated with multiple sidelink communications in a plurality of non-contiguous RB sets, wherein at least one of the RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0062] Figure 2 This is a diagram illustrating an example UE 120a communicating with UE 120e in a wireless network. UE 120a and / or UE 120e may correspond to... Figure 1 UE 120a. UE 120a may be equipped with an assembly of antennas 202 (shown as antennas 202a to 202r), such as R One antenna ( R ≥1). The collection of antennas 202 may include or be included in the following: one or more antenna panels, one or more antenna groups, one or more collections of antenna elements, or one or more antenna arrays, etc. Antenna panels, antenna groups, collections of antenna elements, or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), a collection of coplanar antenna elements, a collection of non-coplanar antenna elements, or coupled to one or more transmitting or receiving components (such as...). Figure 2 One or more antenna elements (one or more components).

[0063] At UE 120a, the set of antennas 202 can receive sidelink signals from UE 120e and / or other UE 120, and can transmit the set of received signals (e.g., R The received signals are provided to the set of modems 204 (e.g., the collection of signals received). RA modem 204 (shown as modems 204a to 204r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of modem 204. Each modem 204 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, or digitize) the received signal to obtain an input sample. Each modem 204 may use a demodulator component to further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 206 may obtain the received symbols from modem 204, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. Receiver processor 208 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for UE 120a to data sink 210, and provide the decoded control information and system information to controller / processor 212. The term "controller / processor" may refer to one or more controllers and / or one or more processors. The channel processor can determine parameters such as the Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), or Channel Quality Information (CQI). In some examples, one or more components of the UE 120a may be included in the housing 214.

[0064] Transmit processor 216 can receive and process data from data source 218 and control information (e.g., for reports including RSRP, RSSI, RSRQ, or CQI) from controller / processor 212. Transmit processor 216 can generate reference symbols for one or more reference signals. Symbols from transmit processor 216 can be pre-decoded (where applicable) by transmit (TX) MIMO processor 220, further processed by modem 204 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to UE 120e. In some examples, modem 204 of UE 120a may include modulator and demodulator. In some examples, UE 120a includes a transceiver. The transceiver may include antenna 202, modem 204, MIMO detector 206, receive processor 208, transmit processor 216, or any combination of TX MIMO processor 220. The transceiver may be used by processor (e.g., controller / processor 212) and memory 222 to perform aspects of any of the methods described herein. In some examples, controller / processor 212 represents one or more processors, and memory 222 represents one or more memories.

[0065] UE 120a's controller / processor 212, or Figure 2Any other component may perform one or more techniques associated with the transmission of PSFCH for a non-contiguous set of RBs in unlicensed sidelink communication, as described in more detail elsewhere herein. For example, the controller / processor 212 of UE 120a, or... Figure 2 Any other component that can execute or direct, for example Figure 8 The process 800 Figure 9 The process 900 Figure 10 The operation of process 1000 or other processes as described herein. Memory 222 may store data and program code of UE 120a. In some examples, memory 222 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code or program code) for wireless communication. For example, one or more instructions may cause the one or more processors and / or UE 120a to perform or direct, for example, when executed by one or more processors of UE 120a (e.g., directly executed, or executed after compilation, transformation, or interpretation). Figure 8 The process 800 Figure 9 The process 900 Figure 10 The process 1000 or other processes as described herein may be used. In some examples, the execution instructions may include run instructions, translation instructions, compilation instructions, or interpretation instructions, etc. In some embodiments, one or more of a plurality of memories may be configured to store processor-executable code that, when executed, may configure the one or more processors to perform the various functions described herein (as part of a processing system). In some other embodiments, the processing system may be pre-configured to perform the various functions described herein.

[0066] In some respects, individual processors can be described as performing all functions executed by one or more processors. In other respects, one or more processors can jointly perform (or be configured or operable to perform) a set of functions. For example, the processors of a first set (one or more) of the one or more processors can be described as performing a first function executed by the one or more processors, and the processors of a second set (one or more) of the one or more processors can be described as performing a second function executed by the one or more processors. The processors of the first set and the processors of the second set can be the same set of processors or can be different sets of processors. The reference to "one or more processors" should be understood as referring to a combination Figure 2 Any one or more processors described. The reference to "one or more memories" should be understood to mean any one or more memories of the corresponding device, such as those in conjunction with... Figure 2The memory described. For example, a function described as being performed by one or more memories can be performed by the same subset of the one or more memories or by different subsets of the one or more memories.

[0067] In some aspects, the UE (e.g., UE 120a) includes components for monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and / or components for transmitting a subset of PSFCH communications in a PSFCH communications set using a second set of multiple RBs that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection process.

[0068] In some aspects, the UE includes components for monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and / or components for transmitting a subset of PSFCH communications in a PSFCH communications set using a second set of RBs, the second set of RBs being selected from a first set of RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications using a group-based selection operation.

[0069] In some aspects, the UE includes components for monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and / or components for transmitting a set of PSFCH communications associated with multiple sidelink communications in a non-contiguous set of RBs, wherein at least one of the multiple RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications. Components for the UE to perform the operations described herein may include one or more of, for example, a communications manager 140, an antenna 202, a modem 204, a MIMO detector 206, a receive processor 208, a transmit processor 216, a TX MIMO processor 220, a controller / processor 212, or a memory 222.

[0070] Figure 3 This is a diagram illustrating example 300 of sidelink communication.

[0071] like Figure 3As shown, the first UE 305-1 can communicate with the second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. UE 305-1 and UE 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, and / or V2P communication), and / or mesh networking. In some examples, UE 305 (e.g., UE 305-1 and / or UE 305-2) may correspond to one or more other UEs described elsewhere herein, such as UE 120. In some examples, one or more sidelink channels 310 may use a PC5 interface and / or operate in a high-frequency band (e.g., the 5.9 GHz band). Additionally or alternatively, UE 305 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, or symbols).

[0072] like Figure 3 As further shown, one or more sidelink channels 310 may include PSCCH 315, PSSCH 320, and / or PSFCH 325. PSCCH 315 may be used to convey control information, similar to the Physical Downlink Control Channel (PDCCH) and / or 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. 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, and / or spatial resources), wherein transport blocks (TB) 335 may be carried on PSSCH 320. TB 335 may include data. PSFCH 325 may be used to convey sidelink feedback 340, such as HARQ feedback (e.g., acknowledgment or negative acknowledgment (ACK / NACK) information), transmit power control (TPC), and / or scheduling requests (SR). For example, UE 305-1 (which may be a responding UE) may receive HARQ feedback (such as ACK or NACK) from UE 305-1 (which may be a COT-initiating UE). HARQ feedback may be received via one or more PSFCH transmission timings associated with PSFCH325.

[0073] Although shown on PSCCH 315, in some examples, SCI 330 may include multiple communications in different phases, such as a first-phase SCI (SCI-1) and a second-phase SCI (SCI-2). SCI-1 may be transmitted on PSCCH 315. SCI-2 may be transmitted on PSSCH 320. SCI-1 may include, for example, indications of one or more resources on PSSCH 320 (e.g., time resources, frequency resources, and / or spatial resources), information for decoding sidelink communications on PSSCH, Quality of Service (QoS) priority values, resource reservation periods, PSSCH demodulation reference signal (DMRS) mode, SCI format of SCI-2, β offset of SCI-2, quantity of PSSCH DMRS port, and / or modulation and decoding scheme (MCS). SCI-2 may include information associated with data transmission on the PSSCH320, such as HARQ process ID, New Data Indicator (NDI), source identifier, destination identifier, and / or Channel State Information (CSI) report triggering.

[0074] In some examples, one or more sidelink channels 310 may use a resource pool. For example, a specific RB may be used across time to transmit a scheduling assignment in a subchannel (e.g., included in SCI 330). In some examples, data transmissions associated with a 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 examples, the scheduling assignment and associated data transmissions are not transmitted on adjacent RBs.

[0075] In some examples, UE 305 may operate using a sidelink transmit mode (e.g., mode 1), where resource selection and / or scheduling is performed by network node 110 (e.g., a base station, CU, or DU). For example, UE 305 may receive grants (e.g., in downlink control information (DCI) or in radio resource control (RRC) messages, such as configuration grants) from network node 110 for sidelink channel access and / or scheduling (e.g., directly or via one or more network nodes). In some examples, UE 305 may operate using a transmit mode (e.g., mode 2), where resource selection and / or scheduling is performed by UE 305 (e.g., not by network node 110). In some examples, UE 305 may perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 305 can measure RSSI parameters (e.g., sidelink-RSSI (S-RSSI) parameters) associated with various sidelink channels, can measure RSRP parameters (e.g., PSSCH-RSRP parameters) associated with various sidelink channels, and / or can measure RSRQ parameters (e.g., PSSCH-RSRQ parameters) associated with various sidelink channels, and can select the channel for transmitting sidelink communication based at least in part on the measurements.

[0076] Alternatively or additionally, UE 305 may use SCI 330 received in PSCCH 315 to perform resource selection and / or scheduling, which may indicate occupied resources and / or channel parameters. Alternatively or additionally, UE 305 may perform resource selection and / or scheduling by determining the Channel Busy Rate (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating the maximum number of resource blocks that UE 305 may use for a particular set of subframes).

[0077] In a transmission mode where resource selection and / or scheduling is performed by UE 305, UE 305 may generate a sidelink grant, which may be transmitted in SCI 330. The sidelink grant may indicate 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 PSSCH 320, one or more subframes to be used for an upcoming sidelink transmission, and / or the MCS to be used for an upcoming sidelink transmission. In some examples, UE 305 may generate a sidelink grant indicating one or more parameters (such as the periodicity of sidelink transmission) for semi-persistent scheduling (SPS). Additionally or alternatively, UE 305 may generate a sidelink grant for event-driven scheduling (such as for on-demand sidelink messages).

[0078] Figure 4 This is an illustration of Example 400, illustrating a PSFCH waveform. The PSFCH waveform can be associated with a PSFCH transmission having a 15 kHz subcarrier spacing (SCS) or a 30 kHz SCS. In the first example, each PSFCH transmission can occupy a single common interleaving and K3 dedicated PRBs. The value of K3 can be configured (e.g., pre-configured) at the UE. For example, K3 can be equal to 1, 2, or 5, etc. The K3 dedicated PRBs can be located on the same interleaving. In some examples, one or more guard band PRBs can exist between the common PRB and the dedicated PRBs. Multiple cyclic shift (CS) pairs can be used on the K3 dedicated PRBs (e.g., as in legacy NR side-link (SL) PSFCH transmissions). When the common interleaving PRB and the dedicated PRB are within the same 1 MHz bandwidth, the UE can transmit only on the dedicated PRBs (subject to meeting the Occupied Channel Bandwidth (OCB) requirement). In the second example, each PSFCH transmission can occupy a single dedicated interleaving. PSSCH transmissions on non-overlapping resources can be mapped to an orthogonal dedicated PRB for PSFCH transmissions.

[0079] Example 400 is an example of a unified framework between the first example (where PSFCH transmission occupies a common interleaving 402 and K3 dedicated PRBs) and the second example (where PSFCH transmission occupies a single dedicated interleaving 404). A configurable number (e.g., K3) of consecutive PRBs carrying ACK / NACK can be transmitted on the non-common interleaving 404, and transmission can also be performed on the common interleaving 402. N K3 dummy PSFCH interleaved resource blocks (IRBs). N This can be equal to the number of IRBs in an interleaved network. According to K3, it equals... N (K3= N The PSFCH waveform can be transformed into a fully interleaved PSFCH waveform. In some examples, configuring more than one IRB carrying ACK / NACK can address low transmit power issues caused by power spectral density (PSD) limitations and proximity problems. Figure 4 As shown, the UE can have two RBs 404 carrying ACK / NACK. A CS ramp offset of five CS resources 406 can be used to reduce the peak-to-average power ratio (PAPR). This can be dropped in the IRB carrying ACK / NACK. X A virtual IRB 408 within each RB is used to maintain ACK / NACK transmit power below the PSD limit. The UE and another PSFCH transmitting UE can transmit on reserved (R) cyclic resources in the virtual IRB on the common interleaving, for example, to implement OCB.

[0080] Figure 5This is a diagram illustrating example 500 sent simultaneously via PSFCH.

[0081] In some examples, the UE may support PSFCH transmission on both contiguous and non-contiguous RB sets. The UE may indicate the UE capabilities for supporting PSFCH transmission on contiguous RB sets and / or the UE capabilities for supporting PSFCH transmission on non-contiguous RB sets. In some examples, each PSFCH transmission may occupy one common interleaving and K3 dedicated PRBs. The cyclic shift on each of the K3 dedicated PRBs may be the same. In some examples, the cyclic shift on each PRB of the common interleaving may be determined based on the specific UE implementation.

[0082] In some examples, PSFCH can be transmitted on non-contiguous RB sets. For example, PSFCH communications associated with different links in different RB sets can be transmitted simultaneously. Support for PSFCH transmission on non-contiguous RB sets is limited by UE capabilities. Additionally, due to UE capabilities, there may be a limit to the maximum number of PSFCH communications that a UE can transmit simultaneously. In some examples, when the number of simultaneous PSFCH communications exceeds UE capabilities, the UE can select the PSFCH communications to transmit by performing a PSFCH selection procedure (in some examples, this may be referred to as simultaneous PSFCH transmission). The UE can perform the PSFCH selection procedure based on the following: information carried by the corresponding PSFCH communication, HARQ-ACK priority, conflict indication second, and / or an ascending order of priority values ​​of the information carried by the corresponding PSFCH communication. For example, the PSFCH selection procedure can be performed by discarding unselected PSFCH communications.

[0083] Because simultaneously transmitted PSFCH communications are associated with different links, PSFCH communications can be used with non-contiguous RB sets (in... Figure 5 The diagram shows the association of "RB set #0", "RB set #1", "RB set #2", and "RB set #3". When the number of simultaneous PSFCH communications exceeds the UE's capacity, the UE can select PSFCH communications as described above. As shown by reference numeral 505, the result of PSFCH selection may still be discontinuous, and therefore, a UE that does not support PSFCH transmission on discontinuous RB sets may not be able to send one or more PSFCH communications.

[0084] Several aspects of the techniques described herein facilitate PSFCH transmission across non-contiguous RB sets. In some aspects, for example, the UE may perform the PSFCH selection procedure described above to select PSFCH communications (e.g., by discarding one or more PSFCH communications). If the remaining PSFCH communications are still located in non-contiguous RB sets, the UE may continue to discard PSFCH communications based on one or more rules until the remaining PSFCH communications are associated with a contiguous RB set. In some aspects, the UE may first perform a PSFCH discard operation to form contiguous PSFCH transmission between RB sets. If the PSFCH communications in the resulting contiguous RB sets exceed the UE's capacity, the UE may perform PSFCH discarding to select PSFCH communications for transmission. In some aspects, the UE may use common interleaving to form contiguous PSFCH transmission between RB sets.

[0085] Figures 6A to 6C These are illustrations of examples 600, 612, and 614 associated with the transmission of a PSFCH for a non-contiguous set of resource blocks in unlicensed sidelink communication. As shown, UE 602 can communicate with one or more additional UEs 604a, 604b, 604c, and 604d. UE 602 can be, similar to, or include... Figure 1 and Figure 2 The UE 102 and / or UE 102a depicted, or included in the UE.

[0086] like Figure 6A As shown, in the first operation 606, UE 602 can monitor at least one sidelink channel. For example, UE 602 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications 608. In the second operation 610, UE 602 can transmit a subset of PSFCH communications from the PSFCH communication set. In some aspects, UE 602 can use a second set of multiple RBs that are consecutive in the frequency domain to simultaneously transmit the subset of PSFCH communications. In some aspects, the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communication set. In some aspects, the first set of multiple RBs can be selected using an initial PSFCH selection procedure. UE 602 can perform the initial PSFCH selection procedure by selecting PSFCH communications based on information carried by the PSFCH. For example, UE 602 can first select PSFCH communications with HARQ-ACK information from the PSFCH communication set 612 corresponding to the minimum priority value, and then UE 602 can select PSFCH communications with conflict information corresponding to the minimum remaining priority value. Therefore, UE 602 can perform the initial PSFCH selection process by discarding one PSFCH communication at a time (e.g., PSFCH communication discarding can be performed at the PSFCH level).

[0087] In some aspects, the second plurality of RB sets 614 may be selected using an additional PSFCH selection procedure. In some aspects, the additional PSFCH selection procedure may be a continuation of the initial PSFCH selection procedure (e.g., the additional PSFCH selection procedure may include PSFCH dropping performed at the PSFCH level). For example, UE 602 may continue to select PSFCH communications (e.g., by dropping unselected PSFCH communications) according to the initial PSFCH selection procedure described above until consecutive PSFCH transmissions are formed between RB sets.

[0088] In some respects, a second set of multiple RBs can be selected by discarding PSFCH communications at the RB set level. For example, UE602 can discard an entire RB set (and any PSFCH communications within it) based on a selection process. In other respects, a second set of multiple RBs can be selected using a set of weighted priority values. Each weighted priority value in the set of weighted priority values ​​can be a weighted priority value corresponding to the RB set. The weighted priority value corresponding to the RB set. This can be associated with the priority value of the corresponding PSFCH communication of the RB set. For example, in some aspects, the weighted priority value can be used. To calculate. The second plurality of RB sets may include a first RB set having a first weighted priority value in the weighted priority value set, and the second plurality of RB sets may omit the second RB set having the second weighted priority value based on the fact that a second weighted priority value in the weighted priority value set is higher than the first weighted priority value.

[0089] In some aspects, such as Figure 6B As illustrated in Example 612, the weighted priority value may include the average priority value of two or more priority values ​​corresponding to two or more PSFCH communications 616 and 618 associated with each RB set in PSFCH communication set 620. For example, the weighted priority value associated with RB set #0 is the average of the priority value associated with PSFCH communication 616 and the priority value associated with PSFCH communication 618. Therefore, the weighted priority value associated with RB set #0 is 1.5, which is greater than 1, and as illustrated in illustrative transmission 622, RB set #0 can be discarded, leaving only RB set #3 and PSFCH communication 624.

[0090] In some aspects, the weighted priority value may include the highest priority value (and therefore the lowest priority level) among two or more priority values ​​corresponding to two or more PSFCH communications associated with the first RB set in PSFCH communication set 620. Thus, in example 612, the weighted priority value associated with RB set #0 is 2, which is greater than 1, resulting in RB set #0 being discarded, leaving the exemplary transmission 622. In some aspects, the weighted priority value associated with the RB set may include the lowest priority value (e.g., the highest priority level) among two or more priority values ​​corresponding to two or more PSFCH communications associated with the first RB set in PSFCH communication set 620.

[0091] In some aspects, it may be preferred to retain RB sets with more PSFCH communications than other RB sets. Functions can be used to generate weighted priority values ​​such that RB sets with more PSFCH communications have lower priority values ​​(and therefore, higher priority levels). In some aspects, for example, the weighted priority values ​​associated with an RB set may include functions of two or more priority values ​​corresponding to two or more PSFCH communications in that RB set, respectively. For example, the function may include the product of a second weighted priority value (e.g., an average weighted priority value) associated with the first RB set and the amount of PSFCH communications associated with the first RB set. For example, in some aspects, Therefore, in Example 612, b1, b2, and b3, corresponding to PSFCH communications 618, 616, and 624 respectively, can be equal to 1 / 2, 1 / 2, and 1 (to provide the average priority value for PSFCH communications across the corresponding groups), and c1, c2, and c3 can be equal to 1 / 2, 1 / 2, and 1 respectively. Therefore, the weighted priority value associated with RB set #0 can be 2*1 / 2*1 / 2+1*1 / 2*1 / 2=3 / 4=0.75, which is less than 1 (the weighted priority value associated with RB set #3), and thus RB set #3 can be discarded, resulting in exemplary transmission 626.

[0092] In some aspects, the second plurality of RB sets may be selected based on the selection of a first group 628 of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values. In some aspects, each weighted priority value in the set of weighted priority values ​​may be associated with a corresponding group of consecutive RB sets 628 or 630. The second plurality of RB sets may include the first group 628 of consecutive RB sets, and a second group 630 of consecutive RB sets having a second weighted priority value may be omitted based on the fact that a second weighted priority value in the set of weighted priority values ​​is higher than a first weighted priority value. In some aspects, the first weighted priority value may include a function of two or more priority values ​​corresponding to two or more RB sets in the first group 628 of consecutive RB sets, and the function may be associated with the amount of PSFCH communication associated with the first group 628 of consecutive RB sets. For example, in some aspects, Therefore, for example, such as Figure 6C As shown, b1, b2, b3, and b4, corresponding to PSFCH sets 632, 634, 636, and 638 respectively, can be equal to 1, 1 / 3, 1 / 3, and 1 / 3 (to provide the average priority value for PSFCH communication across the corresponding groups), and c1, c2, and c3 can be equal to 1, 1 / 3, 1 / 3, and 1 / 3 respectively. Therefore, the weighted priority value associated with the first group 628 is equal to 4*1 / 3*1 / 3+2*1 / 3*1 / 3+1*1 / 3*1 / 3=7 / 9 (approximately 0.78), which is less than 2, and therefore, the second group 630 of the RB set can be discarded, resulting in exemplary transmission 640.

[0093] In some respects, the UE can form a continuous PSFCH transmission across RB sets, and if the transmission includes more PSFCH communications than the UE supports, the UE can discard one or more PSFCH communications until the amount of PSFCH communications is within the UE's capabilities.

[0094] Figures 7A to 7C These are illustrations of examples 700, 702, and 704 associated with the transmission of a PSFCH for a non-contiguous set of resource blocks in unpermitted sidelink communication. Example 700 illustrates the transmission of a PSFCH for a non-contiguous set of resource blocks in unpermitted sidelink communication. Figure 6A An example of signaling associated with the depicted UE 602.

[0095] In some aspects, the second plurality of RB sets can be selected from the first plurality of RB sets 706 corresponding to the PSFCH communication sets associated with the multiple sidelink communications using a group-based selection operation. For example, the second plurality of RB sets can be selected based on the selection of a first group 708 of consecutive RB sets in the first plurality of RB sets 706 using a set of weighted priority values. Each weighted priority value in the set of weighted priority values ​​can be associated with a corresponding group of consecutive RB sets. The second plurality of RB sets may include the first group 708 of consecutive RB sets, and a second group 710 of consecutive RB sets having a second weighted priority value can be omitted based on the fact that a second weighted priority value in the set of weighted priority values ​​is higher than a first weighted priority value, resulting in an exemplary transmission 712.

[0096] In some aspects, the first group 708 of consecutive RB sets may include at least two RB sets, wherein each of the at least two RB sets is associated with an equivalent COT state. In some aspects, the first group of consecutive RB sets may include at least two RB sets, wherein each of the at least two RB sets may be associated with an equivalent energy level. In some aspects, the equivalent energy level may include RSSI and / or RSRP. In some aspects, an indication of the equivalent energy level may be maintained in one or more memories of UE 602 (e.g., as specified in a wireless communication standard) and / or provided to UE 602 via an RRC message.

[0097] In some aspects, the second plurality of RB sets may be further based on a PSFCH discard operation associated with a third plurality of RB sets 714, wherein the third plurality of RB sets 714 are selected from the first plurality of RB sets using a group-based selection operation. In some aspects, at least one RB set in the third plurality of RB sets 714 includes the outermost RB set in the third plurality of RB sets, and the second plurality of RB sets may omit this at least one RB set. For example, as Figure 7B As shown in Example 702, UE 602 may discard PSFCH#4 with a priority value of 3, thereby generating exemplary communication 716.

[0098] In some aspects, each of the second plurality of RB sets may include an initial PSFCH communication, wherein the initial PSFCH communication has the lowest priority value among at least one priority value associated with that RB set, and wherein a subset of PSFCH communications is omitted in association with at least one PSFCH communication in the PSFCH communication set having the highest priority value among at least two priority values ​​associated with the RB sets in the second plurality of RB sets. The initial PSFCH communication may be referred to, for example, as a “specific” PSFCH. Each RB set may have a specific PSFCH, which may be a PSFCH communication with the lowest priority value. In some aspects, specific PSFCH communications are not discarded, but non-specific PSFCH communications may be discarded as described herein. In some aspects, such as Figure 7B As further shown in Example 702, PSFCH#1, PSFCH#3, and PSFCH#4 can be specific PSFCHs, and UE 602 can discard PSFCH#2 (priority value = 4), resulting in exemplary transmission 718. In some aspects, PSFCH communication can be established as a specific PSFCH for a set of RBs other than the edges of a consecutive set of RBs.

[0099] In some aspects, a subset of PSFCH communications may omit at least one PSFCH communication associated with the highest weighted priority value among at least two weighted priority values ​​associated with a second plurality of RB sets. In some aspects, at least one PSFCH communication may be associated with the outermost RB set in a third plurality of RB sets 714, and that at least one PSFCH communication may have the highest weighted priority value. For example, in Figure 7B In this process, PSFCH#2 and PSFCH#3 can be prioritized, and PSFCH#4 can be discarded, resulting in an exemplary transmission 716. A third set of multiple RBs can be selected from the first set of multiple RBs using a group-based selection operation.

[0100] In some aspects, such as Figure 7C As shown in Example 704, at least one of the multiple RB sets omits PSFCH communication, and UE 602 may transmit common interleaving in at least one RB set (e.g., RB set #1 in Example 704). In some aspects, transmitting common interleaving in at least one RB set may include transmitting common interleaving in at least one RB set according to configuration information. The configuration information may be maintained in one or more memories of UE 602 (e.g., as specified by the wireless communication standard) and / or provided to UE 602 via RRC messages.

[0101] Figure 8This is a flowchart illustrating an example process 800 performed, for example, at a UE or a device of a UE that supports simultaneous PSFCH transmission, according to this disclosure. Example process 800 is an example of an operation performed by a device or UE (e.g., UE 602) associated with PSFCH transmission of a non-contiguous set of RBs in unlicensed sidelink communication.

[0102] like Figure 8 As shown, in some aspects, process 800 may include monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications (block 810). For example, a UE (such as by using...) Figure 11 The depicted communication manager 1108 or receiving component 1102 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications, as described above.

[0103] like Figure 8 Further shown, in some aspects, process 800 may include transmitting a subset of PSFCH communications from a PSFCH communications set using a second plurality of RB sets that are consecutive in the frequency domain, wherein the second plurality of RB sets are selected from a first plurality of RB sets corresponding to the PSFCH communications set, and wherein the first plurality of RB sets are selected using an initial PSFCH selection process (box 820). For example, a UE (such as by using...) Figure 11 The described communication manager 1108 or transmitting component 1104 may use a second plurality of RB sets that are consecutive in the frequency domain to transmit a subset of PSFCH communications in a PSFCH communication set, wherein the second plurality of RB sets are selected from a first plurality of RB sets corresponding to the PSFCH communication set, and wherein the first plurality of RB sets are selected using an initial PSFCH selection process as described above.

[0104] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes described below or in conjunction with other parts of this document.

[0105] In the first additional aspect, the second plurality of RB sets are selected using an additional PSFCH selection process, wherein the additional PSFCH selection process includes a continuation of the initial PSFCH selection process.

[0106] In a second additional aspect, either alone or in combination with the first aspect, the second plurality of RB sets are selected using a set of weighted priority values, and each weighted priority value in the set of weighted priority values ​​is associated with a corresponding PSFCH communication in the set of PSFCH communications.

[0107] In a third additional aspect, either alone or in combination with one or more of the first and second aspects, the second plurality of RB sets includes a first RB set having a first weighted priority value in the set of weighted priority values, the second plurality of RB sets omits a second RB set having a second weighted priority value in the set of weighted priority values, and the second weighted priority value is higher than the first weighted priority value.

[0108] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the first weighted priority value includes the average priority value of two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

[0109] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, the first weighted priority value includes the highest priority value among two or more priority values ​​corresponding to two or more PSFCH communications associated with the first RB set in the PSFCH communication set.

[0110] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, the first weighted priority value includes the lowest priority value among two or more priority values ​​corresponding to two or more PSFCH communications associated with the first RB set in the PSFCH communication set.

[0111] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the first weighted priority value comprises a function of two or more priority values ​​corresponding to two or more PSFCH communications associated with the first RB set in the PSFCH communication set, wherein the function comprises a product of a second weighted priority value associated with the first RB set and the amount of PSFCH communication associated with the first RB set.

[0112] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, the second plurality of RB sets are selected based on the selection of a first group of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values, and each weighted priority value in the set of weighted priority values ​​is associated with a corresponding group of consecutive RB sets.

[0113] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the second plurality of RB sets includes a first group of consecutive RB sets, the second plurality of RB sets omits a second group of consecutive RB sets having a second weighted priority value in the weighted priority value set, and the second weighted priority value is higher than the first weighted priority value.

[0114] In the tenth additional aspect, either alone or in combination with one or more of the first to ninth aspects, the first weighted priority value comprises a function of two or more priority values ​​corresponding to two or more RB sets in the first group of consecutive RB sets, wherein the function is associated with the amount of PSFCH communication associated with the first group of consecutive RB sets.

[0115] although Figure 8 An example box for process 800 is shown, but in some respects, it differs from... Figure 8 Compared to the boxes depicted, process 800 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in the process 800 may be executed in parallel.

[0116] Figure 9 This is a flowchart illustrating an example process 900 performed, for example, at a UE or device of a UE that supports simultaneous PSFCH transmission, according to this disclosure. Example process 900 is an example of an operation performed by a device or UE (e.g., UE 602) associated with the transmission of a PSFCH for a non-contiguous set of resource blocks.

[0117] like Figure 9 As shown, in some aspects, process 900 may include monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications (block 910). For example, a UE (such as by using...) Figure 11 The depicted communication manager 1108 or receiving component 1102 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications, as described above.

[0118] like Figure 9 Further shown, in some aspects, process 900 may include using a second plurality of RB sets to transmit a subset of PSFCH communications in a PSFCH communications set, the second plurality of RB sets being selected from a first plurality of RB sets corresponding to PSFCH communications sets associated with and multiple sidelink communications using a group-based selection operation (box 920). For example, a UE (such as by using...) Figure 11 The described communication manager 1108 or transmitting component 1104 may use a second plurality of RB sets to transmit a subset of PSFCH communications in a PSFCH communications set, the second plurality of RB sets being selected from a first plurality of RB sets corresponding to PSFCH communications sets associated with and multiple side-link communications using a group-based selection operation, as described above.

[0119] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes described below or in conjunction with other parts of this document.

[0120] In the first additional aspect, the second plurality of RB sets are selected based on the selection of a first group of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values, and each weighted priority value in the set of weighted priority values ​​is associated with a corresponding group of consecutive RB sets.

[0121] In a second additional aspect, either alone or in conjunction with the first aspect, the second plurality of RB sets includes a first group of consecutive RB sets, the second plurality of RB sets omitting a second group of consecutive RB sets having a second weighted priority value in the weighted priority value set, and the second weighted priority value being higher than the first weighted priority value.

[0122] In the third additional aspect, either alone or in combination with one or more of the first and second aspects, the first group of consecutive RB sets includes at least two RB sets, wherein each of the at least two RB sets is associated with an equivalent COT state.

[0123] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the first group of consecutive RB sets includes at least two RB sets, wherein each of the at least two RB sets is associated with an equivalent energy level.

[0124] In the fifth additional aspect, the equivalent energy level includes a received signal strength indicator, either alone or in combination with one or more of the first to fourth aspects.

[0125] In the sixth additional aspect, the equivalent energy level includes the reference signal received power, either alone or in combination with one or more of the first to fifth aspects.

[0126] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, an indication of the equivalent energy level is maintained in one or more memories of the UE.

[0127] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, process 900 includes receiving a radio resource control message indicating an equivalent energy level.

[0128] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the second plurality of RB sets are further based on a PSFCH discard operation associated with a third plurality of RB sets, wherein the third plurality of RB sets are selected from the first plurality of RB sets using a group-based selection operation.

[0129] In the tenth additional aspect, individually or in combination with one or more of the first to ninth aspects, at least one of the third plurality of RB sets includes the outermost RB set in the third plurality of RB sets, and the at least one RB set is omitted from the second plurality of RB sets.

[0130] In the eleventh additional aspect, individually or in combination with one or more of the first to tenth aspects, each of the second plurality of RB sets includes an initial PSFCH communication, wherein the initial PSFCH communication has the lowest priority value among at least one priority value associated with the RB set, and wherein a subset of PSFCH communications is omitted in association with at least one PSFCH communication in the PSFCH communication set having the highest priority value among at least two priority values ​​associated with the RB sets in the second plurality of RB sets.

[0131] In the twelfth additional aspect, individually or in combination with one or more of the first to eleventh aspects, the at least one PSFCH communication in the PSFCH communication subset and the PSFCH communication set having the highest weighted priority value among at least two weighted priority values ​​associated with the second plurality of RB sets is omitted.

[0132] In the thirteenth additional aspect, individually or in combination with one or more of the first to twelfth aspects, at least one PSFCH communication is associated with the outermost RB set in a third plurality of RB sets, the at least one PSFCH communication having the highest weighted priority value, wherein the third plurality of RB sets are selected from the first plurality of RB sets using a group-based selection operation.

[0133] although Figure 9 An example box for process 900 is shown, but in some respects, it differs from... Figure 9 Compared to the boxes depicted, process 900 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in process 900 may be executed in parallel.

[0134] Figure 10 This is a flowchart of example process 1000 performed at a UE or device of a UE that supports simultaneous transmission of multiple PSFCH communications. Example process 1000 is an example of an operation performed by a device or UE (e.g., UE 602) associated with the transmission of PSFCH for a non-contiguous set of resource blocks.

[0135] like Figure 10As shown, in some aspects, process 1000 may include monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications (block 1010). For example, a UE (such as by using...) Figure 11 The depicted communication manager 1108 or receiving component 1102 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications, as described above.

[0136] like Figure 10 Further shown, in some aspects, process 1000 may include transmitting a set of PSFCH communications associated with multiple sidelink communications in a non-contiguous set of RBs, wherein at least one of the multiple RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications (box 1020). For example, a UE (such as by using...) Figure 11 The depicted communication manager 1108 or transmitting component 1104 can transmit a set of PSFCH communications associated with multiple sidelink communications in a non-contiguous set of RBs, wherein at least one of the multiple RBs omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications as described above.

[0137] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes described below or in conjunction with other parts of this document.

[0138] In the first additional aspect, transmitting common interleaving in at least one set of RBs includes transmitting common interleaving in at least one set of RBs according to configuration information.

[0139] In the second additional aspect, either alone or in combination with the first aspect, the configuration information is maintained in one or more memories of the UE.

[0140] In a third additional aspect, either alone or in combination with one or more of the first and second aspects, process 1000 includes receiving a radio resource control message indicating configuration information.

[0141] although Figure 10 An example box for process 1000 is shown, but in some respects, it differs from... Figure 10 Compared to the boxes depicted, process 1000 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Additionally or alternatively, two or more boxes in process 1000 may be executed in parallel.

[0142] Figure 11 This is a diagram of an example device 1100 for wireless communication that supports simultaneous transmission of multiple PSFCH communications. Device 1100 may be a UE, or a UE may include device 1100. In some aspects, device 1100 includes a receiving component 1102, a transmitting component 1104, and a communication manager 1108 that can communicate with each other (e.g., via one or more buses). As shown, device 1100 can use the receiving component 1102 and the transmitting component 1104 to communicate with another device 1106 (such as a UE, a network node, or another wireless communication device).

[0143] In some respects, device 1100 may be configured and / or operable to perform the functions described herein. Figures 6A to 7C One or more operations described herein. Additionally or alternatively, device 1100 may be configured and / or operable to perform one or more processes described herein, such as Figure 8 The process 800 Figure 9 Process 900 and / or Figure 10 The process 1000. In some aspects, the device 1100 may include the above-described combination. Figure 2 One or more components of the UE as described.

[0144] Receiver 1102 may receive communications, such as reference signals, control information, and / or data communications, from device 1106. Receiver 1102 may provide the received communications to one or more other components of device 1100, such as communication manager 140. In some aspects, receiver 1102 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components. In some aspects, receiver 1102 may include the combinations described above. Figure 2 The described UE includes one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receive processors, one or more controllers / processors, and / or one or more memories.

[0145] Transmitting component 1104 can transmit communications, such as reference signals, control information, and / or data communications, to device 1106. In some aspects, communication manager 140 can generate communications and send the generated communications to transmitting component 1104 for transmission to device 1106. In some aspects, transmitting component 1104 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can transmit the processed signals to device 1106. In some aspects, transmitting component 1104 can include the above-described combinations. Figure 2The described UE includes one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers / processors, and / or one or more memories. In some aspects, the transmit component 1104 may co-located with the receive component 1102 in one or more transceivers.

[0146] Communication manager 1108 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. Communication manager 1108 can use a second set of multiple RBs that are consecutive in the frequency domain to transmit, or can cause transmission component 1104 to use the second set of multiple RBs to transmit a subset of PSFCH communications in a PSFCH communications set, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection process. In some aspects, communication manager 1108 can perform one or more operations described elsewhere herein as being performed by one or more components of communication manager 140.

[0147] Communication manager 1108 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. Communication manager 1108 can use a second set of RBs to transmit, or can cause transmission component 1104 to use a second set of RBs to transmit a subset of PSFCH communications in a PSFCH communications set, the second set of RBs being selected from a first set of RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications using a group-based selection operation. In some aspects, communication manager 1108 can perform one or more operations described elsewhere herein as being performed by one or more components of communication manager 140.

[0148] Communication manager 1108 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. Communication manager 1108 can transmit, or cause transmission component 1104 to transmit, a set of PSFCH communications associated with multiple sidelink communications in multiple non-contiguous RB sets, wherein at least one of the multiple RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications. In some aspects, communication manager 1108 can perform one or more operations described elsewhere herein as being performed by one or more components of communication manager 140.

[0149] Communication manager 1108 may include the above-mentioned combination Figure 2The described UE includes one or more controllers / processors and one or more memories. In some aspects, the communication manager 140 includes a set of components. Alternatively, this set of components may be separate from and distinct from the communication manager 140. In some aspects, one or more components in this set of components may include those described above. Figure 2 The described UE may include one or more controllers / processors, one or more memories, or may be implemented within one or more controllers / processors or one or more memories of the UE. Additionally or alternatively, one or more components in this set of components may be implemented at least partially as software stored in one or more memories. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by one or more controllers or one or more processors to perform the function or operation of the component.

[0150] The receiving component 1102 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The transmitting component 1104 can transmit a subset of PSFCH communications from a PSFCH communications set using a second set of multiple RBs that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using a PSFCH selection process.

[0151] The receiving component 1102 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The transmitting component 1104 can use a second set of multiple RBs to transmit a subset of PSFCH communications in the PSFCH communications set, the second set of multiple RBs being selected from a first set of multiple RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications using a group-based selection operation.

[0152] The receiving component 1102 can receive radio resource control messages indicating equivalent energy levels.

[0153] The receiving component 1102 can monitor at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications. The transmitting component 1104 can transmit a set of PSFCH communications associated with multiple sidelink communications in a non-contiguous set of RBs, wherein at least one of the multiple RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

[0154] The receiving component 1102 can receive radio resource control messages that indicate configuration information.

[0155] Figure 11The number and arrangement of components shown are provided as an example. In reality, with... Figure 11 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 11 The two or more components shown can be implemented within a single component, or Figure 11 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 11 The collection of (one or more) components shown is executable and described as being composed of Figure 11 Another set of components shown performs one or more functions.

[0156] The following provides an overview of some aspects of this disclosure: Aspect 1: A method for wireless communication performed by a user equipment (UE), the method comprising: monitoring at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications; and transmitting a subset of PSFCH communications from a Physical Sidelink Feedback Channel (PSFCH) communications set using a second set of a plurality of resource blocks (RBs) that are consecutive in the frequency domain, wherein the second set of RBs is selected from a first set of RBs corresponding to the PSFCH communications set, and wherein the first set of RBs is selected using an initial PSFCH selection process.

[0157] Aspect 2: According to the method of aspect 1, the second plurality of RB sets are selected using an additional PSFCH selection process, wherein the additional PSFCH selection process includes a continuation of the initial PSFCH selection process.

[0158] Aspect 3: The method according to any one of claims 1 or 2, wherein the second plurality of RB sets are selected using a set of weighted priority values, and wherein each weighted priority value in the set of weighted priority values ​​is associated with a corresponding PSFCH communication in the set of PSFCH communications.

[0159] Aspect 4: According to the method of aspect 3, wherein the second plurality of RB sets includes a first RB set having a first weighted priority value in the set of weighted priority values, wherein the second plurality of RB sets excludes a second RB set having a second weighted priority value in the set of weighted priority values, and wherein the second weighted priority value is higher than the first weighted priority value.

[0160] Aspect 5: According to the method of aspect 4, wherein the first weighted priority value includes the average priority value of two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

[0161] Aspect 6: According to the method of aspect 4, wherein the first weighted priority value includes the highest priority value among two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

[0162] Aspect 7: According to the method of aspect 4, wherein the first weighted priority value includes the lowest priority value among two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

[0163] Aspect 8: According to the method of aspect 4, wherein the first weighted priority value comprises a function of two or more priority values ​​corresponding to two or more PSFCH communications associated with the first RB set in the PSFCH communication set, wherein the function comprises a product of a second weighted priority value associated with the first RB set and the amount of PSFCH communication associated with the first RB set.

[0164] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the second plurality of RB sets are selected based on the selection of a first group of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values, and wherein each weighted priority value in the set of weighted priority values ​​is associated with a corresponding group of consecutive RB sets.

[0165] Aspect 10: According to the method of aspect 9, wherein the second plurality of RB sets includes the first group of consecutive RB sets, wherein the second plurality of RB sets excludes the second group of consecutive RB sets having a second weighted priority value in the set of weighted priority values, and wherein the second weighted priority value is higher than the first weighted priority value.

[0166] Aspect 11: The method according to any one of Aspects 9 to 10, wherein the first weighted priority value comprises a function of two or more priority values ​​corresponding to two or more RB sets in the first group of consecutive RB sets, wherein the function is associated with the amount of PSFCH communication associated with the first group of consecutive RB sets.

[0167] Aspect 12: A method for wireless communication performed by a user equipment (UE), the method comprising: monitoring at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications; and transmitting a subset of PSFCH communications in a physical sidelink feedback channel (PSFCH) communications set using a second plurality of resource blocks (RBs), the second plurality of resource blocks (RBs) set being selected from a first plurality of RBs corresponding to the PSFCH communications set associated with the plurality of sidelink communications using a group-based selection operation.

[0168] Aspect 13: According to the method of aspect 12, the second plurality of RB sets are selected based on the selection of a first group of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values, and each weighted priority value in the set of weighted priority values ​​is associated with a corresponding group of consecutive RB sets.

[0169] Aspect 14: According to the method of aspect 13, wherein the second plurality of RB sets includes the first group of consecutive RB sets, wherein the second plurality of RB sets excludes the second group of consecutive RB sets having a second weighted priority value in the set of weighted priority values, and wherein the second weighted priority value is higher than the first weighted priority value.

[0170] Aspect 15: The method according to any one of Aspects 13 or 14, wherein the first group of consecutive RB sets comprises at least two RB sets, wherein each of the at least two RB sets is associated with an equivalent channel occupancy time (COT) state.

[0171] Aspect 16: The method according to any one of Aspects 13 to 15, wherein the first group of consecutive RB sets comprises at least two RB sets, wherein each of the at least two RB sets is associated with an equivalent energy level.

[0172] Aspect 17: The method according to aspect 16, wherein the equivalent energy level includes a received signal strength indicator.

[0173] Aspect 18: The method according to any one of claims 16 or 17, wherein the equivalent energy level includes the reference signal received power.

[0174] Aspect 19: The method according to any one of Aspects 16 to 18, wherein an indication of the equivalent energy level is maintained in one or more memories of the UE.

[0175] Aspect 20: The method according to any one of aspects 16 to 19, the method further comprising: receiving a radio resource control message indicating the equivalent energy level.

[0176] Aspect 21: The method according to any one of Aspects 12 to 20, wherein the second plurality of RB sets is further based on a PSFCH discard operation associated with a third plurality of RB sets, wherein the third plurality of RB sets are selected from the first plurality of RB sets using the group-based selection operation.

[0177] Aspect 22: The method according to any one of aspects 12 to 21, wherein at least one RB set in the third plurality of RB sets includes the outermost RB set in the third plurality of RB sets, and the at least one RB set is omitted from the second plurality of RB sets.

[0178] Aspect 23: The method according to any one of Aspects 12 to 22, wherein each of the second plurality of RB sets includes an initial PSFCH communication, wherein the initial PSFCH communication has the lowest priority value among at least one priority value associated with the RB set, and wherein the at least one PSFCH communication is omitted in association with at least one PSFCH communication in the PSFCH communication set having the highest priority value among at least two priority values ​​associated with the RB set in the second plurality of RB sets.

[0179] Aspect 24: The method according to any one of Aspects 12 to 23, wherein the at least one PSFCH communication is omitted in association with the highest weighted priority value among at least two weighted priority values ​​associated with the second plurality of RB sets.

[0180] Aspect 25: The method according to aspect 24, wherein the at least one PSFCH communication is associated with the outermost RB set in a third plurality of RB sets, the at least one PSFCH communication having the highest weighted priority value, wherein the third plurality of RB sets are selected from the first plurality of RB sets using the group-based selection operation.

[0181] Aspect 26: A method of wireless communication performed by a user equipment (UE), the method comprising: monitoring at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications; and transmitting a set of physical sidelink feedback channel (PSFCH) communications associated with the plurality of sidelink communications in a plurality of non-contiguous resource block (RB) sets, wherein at least one of the plurality of RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in the at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

[0182] Aspect 27: The method according to aspect 26, wherein transmitting the common interleaving in the at least one RB set includes transmitting the common interleaving in the at least one RB set according to configuration information.

[0183] Aspect 28: According to the method of aspect 27, the configuration information is maintained in one or more memories of the UE.

[0184] Aspect 29: The method according to any one of Aspects 27 or 28, the method further comprising: receiving a radio resource control message indicating the configuration information.

[0185] Aspect 30: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more of aspects 1 to 11.

[0186] Aspect 31: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more of aspects 1 to 11.

[0187] Aspect 32: 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.

[0188] Aspect 33: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by one or more processors to perform the method according to one or more of aspects 1 to 11.

[0189] Aspect 34: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1 to 11.

[0190] Aspect 35: A device for wireless communication, the device comprising: a processing system including one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more of aspects 1 to 11.

[0191] Aspect 36: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform the method according to one or more of aspects 1 to 11.

[0192] Aspect 37: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more of aspects 12 to 25.

[0193] Aspect 38: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more of aspects 12 to 25.

[0194] Aspect 39: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 12 to 25.

[0195] Aspect 40: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by one or more processors to perform the method according to one or more of aspects 12 to 25.

[0196] Aspect 41: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 12 to 25.

[0197] Aspect 42: A device for wireless communication, the device comprising: a processing system including one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more of aspects 12 to 25.

[0198] Aspect 43: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform the method according to one or more of aspects 12 to 25.

[0199] Aspect 44: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more of aspects 26 to 29.

[0200] Aspect 45: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more of aspects 26 to 29.

[0201] Aspect 46: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 26 to 29.

[0202] Aspect 47: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by one or more processors to perform the method according to one or more of aspects 26 to 29.

[0203] Aspect 48: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 26 to 29.

[0204] Aspect 49: A device for wireless communication, the device comprising: a processing system including one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more of aspects 26 to 29.

[0205] Aspect 50: An apparatus for wireless communication at a device, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform the method according to one or more of aspects 26 to 29.

[0206] While the foregoing disclosure provides examples and descriptions, it is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made based on the foregoing disclosure, or from various forms of practice.

[0207] As used herein, the term "component" is intended to be broadly interpreted as hardware or a combination of hardware and software. "Software" should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, threads of execution, procedures, or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, a "processor" is implemented in hardware or a combination of hardware and software. It will be apparent that the systems or methods described herein can be implemented in various forms of hardware or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems or methods is not limited in any way. Therefore, the operation and behavior of these systems or methods are described herein without reference to any specific software code, as those skilled in the art will understand that the software and hardware can be designed to implement these systems or methods, at least in part, based on the description herein.

[0208] As used in this article, depending on the context, "meeting the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0209] As used herein, the term "determine" or "determine" encompasses a wide variety of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, lookup (such as by searching in a table, database, or other data structure), identification, reasoning, discovery, and similar actions. Additionally, "determine" can include receiving (such as receiving information or receiving instructions), accessing (such as accessing data stored in memory), sending (such as sending information), etc. Furthermore, "determine" can include parsing, selecting, obtaining, choosing, creating, and other similar actions. The term "identify" also encompasses a wide variety of actions, and therefore, "identify" can include calculation, computation, processing, derivation, investigation, lookup (such as by searching in a table, database, or other data structure), reasoning, discovery, and similar actions. Additionally, "identify" can include receiving (such as receiving information or receiving instructions), accessing (such as accessing data stored in memory), sending (such as sending information), etc. Furthermore, "identify" can include parsing, selecting, obtaining, choosing, creating, and other similar actions.

[0210] Although specific combinations of features are set forth in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically stated in the claims or disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with each other claim in the claim set. As used herein, the phrase “at least one of” in the list of items refers to any combination of these items, including a single member. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination having 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 ordering of a, b, and c).

[0211] No element, action, or instruction used herein should be construed as essential or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are interchangeable with “one or more.” Furthermore, as used herein, the article “described” is intended to include one or more items mentioned in connection with the article “described” and is interchangeable with “one or more.” Furthermore, as used herein, the terms “group” and “cluster” are intended to include one or more items and are interchangeable with “one or more.” If only one item is desired, the phrase “only one” or similar terminology will be used. Moreover, as used herein, the terms “having” and similar terms are intended as open-ended terms that do not limit the elements they modify (e.g., “having” A may also have B). Furthermore, as used herein, “based on” is intended to be interpreted in an inclusive sense unless otherwise explicitly indicated. For example, unless otherwise explicitly indicated, “based on” is interchangeable with “at least partially based on,” “associated with,” or “according to.” Specifically, unless the phrase in the context refers to "based on 'one' only" or an equivalent, it can be based solely on "one" or on a combination of "one" and one or more other factors, conditions, or information, whether it is "based on 'one'" or "at least partially based on 'one'". Furthermore, as used herein, the term "or" is intended to be inclusive when used consecutively and is interchangeable with "and / or" unless otherwise explicitly stated (e.g., if used in conjunction with "either of the two" or "only one of them").

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, said one or more processors coupled to said one or more memories, at least one of said one or more processors being configured to cause the UE to: Monitoring of at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and A subset of PSFCH communications in the Physical Side Link Feedback Channel (PSFCH) communications set is transmitted using a second set of multiple resource blocks (RBs) that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using an initial PSFCH selection process.

2. The apparatus of claim 1, wherein the second plurality of RB sets are selected using an additional PSFCH selection process, wherein the additional PSFCH selection process includes a continuation of the initial PSFCH selection process.

3. The apparatus of claim 1, wherein the second plurality of RB sets are selected using a set of weighted priority values, and wherein each weighted priority value in the set of weighted priority values ​​is associated with a corresponding PSFCH communication in the set of PSFCH communications.

4. The apparatus of claim 3, wherein the second plurality of RB sets includes a first RB set having a first weighted priority value in the set of weighted priority values, wherein the second plurality of RB sets excludes a second RB set having a second weighted priority value in the set of weighted priority values, and wherein the second weighted priority value is higher than the first weighted priority value.

5. The apparatus of claim 4, wherein the first weighted priority value comprises the average priority value of two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

6. The apparatus of claim 4, wherein the first weighted priority value includes the highest priority value among two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

7. The apparatus of claim 4, wherein the first weighted priority value comprises the lowest priority value among two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set.

8. The apparatus of claim 4, wherein the first weighted priority value comprises a function of two or more priority values ​​corresponding to two or more PSFCH communications in the PSFCH communication set associated with the first RB set, wherein the function comprises a second weighted priority value associated with the first RB set and a product of the amount of PSFCH communications associated with the first RB set.

9. The apparatus of claim 2, wherein the second plurality of RB sets are selected based on the selection of a first group of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values, and wherein each weighted priority value in the set of weighted priority values ​​is associated with a corresponding group of consecutive RB sets.

10. The apparatus of claim 9, wherein the second plurality of RB sets comprises the first group of consecutive RB sets, wherein the second plurality of RB sets excludes the second group of consecutive RB sets having a second weighted priority value in the set of weighted priority values, and wherein the second weighted priority value is higher than the first weighted priority value.

11. The apparatus of claim 9, wherein the first weighted priority value comprises a function of two or more priority values ​​corresponding to two or more RB sets in the first group of consecutive RB sets, wherein the function is associated with the amount of PSFCH communication associated with the first group of consecutive RB sets.

12. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, said one or more processors coupled to said one or more memories, at least one of said one or more processors being configured to cause the UE to: Monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; as well as A second set of multiple resource blocks (RBs) is used to transmit a subset of PSFCH communications in the Physical Sidelink Feedback Channel (PSFCH) communications set, the second set of multiple resource blocks (RBs) being selected from a first set of multiple RBs corresponding to the PSFCH communications set associated with the multiple sidelink communications using a group-based selection operation.

13. The apparatus of claim 12, wherein the second plurality of RB sets are selected based on the selection of a first group of consecutive RB sets in the first plurality of RB sets using a set of weighted priority values, and wherein each weighted priority value in the set of weighted priority values ​​is associated with a corresponding group of consecutive RB sets.

14. The apparatus of claim 13, wherein the second plurality of RB sets comprises the first group of consecutive RB sets, wherein the second plurality of RB sets excludes the second group of consecutive RB sets having a second weighted priority value in the set of weighted priority values, and wherein the second weighted priority value is higher than the first weighted priority value.

15. The apparatus of claim 13, wherein the first group of consecutive RB sets comprises at least two RB sets, wherein each of the at least two RB sets is associated with at least one of an equivalent channel occupancy time (COT) state or an equivalent energy level.

16. The apparatus of claim 15, wherein the equivalent energy level includes at least one of a received signal strength indicator or a reference signal received power.

17. The apparatus of claim 15, wherein the indication of the equivalent energy level is maintained in one or more memories of the UE.

18. The apparatus of claim 15, wherein at least one of the one or more processors is further configured to cause the UE to receive a radio resource control message indicating the equivalent energy level.

19. The apparatus of claim 12, wherein the second plurality of RB sets is further based on a PSFCH discard operation associated with a third plurality of RB sets, wherein the third plurality of RB sets are selected from the first plurality of RB sets using the group-based selection operation.

20. The apparatus of claim 19, wherein at least one of the third plurality of RB sets includes the outermost RB set of the third plurality of RB sets, and the second plurality of RB sets excludes the at least one RB set.

21. The apparatus of claim 12, wherein each of the second plurality of RB sets includes an initial PSFCH communication, wherein the initial PSFCH communication has the lowest priority value among at least one priority value associated with the RB set, and wherein the at least one PSFCH communication is omitted in association with at least one PSFCH communication in the PSFCH communication set having the highest priority value among at least two priority values ​​associated with the RB set in the second plurality of RB sets.

22. The apparatus of claim 12, wherein the subset of PSFCH communications and at least one PSFCH communication in the set of PSFCH communications are omitted in association with the highest weighted priority value among at least two weighted priority values ​​associated with the second plurality of RB sets.

23. The apparatus of claim 22, wherein the at least one PSFCH communication is associated with the outermost RB set in a third plurality of RB sets, the at least one PSFCH communication having the highest weighted priority value, wherein the third plurality of RB sets are selected from the first plurality of RB sets using the group-based selection operation.

24. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, said one or more processors coupled to said one or more memories, at least one of said one or more processors being configured to cause the UE to: Monitoring of at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; and Transmit a set of Physical Sidelink Feedback Channel (PSFCH) communications associated with the plurality of sidelink communications in a plurality of non-contiguous sets of resource blocks (RBs), wherein at least one of the plurality of RB sets omits PSFCH communications, and wherein transmitting the set of PSFCH communications includes transmitting a common interleaving in the at least one RB set, wherein the common interleaving is associated with the set of PSFCH communications.

25. The apparatus of claim 24, wherein, in order for the UE to transmit the common interleaving in the at least one RB set, the at least one of the one or more processors is configured to cause the UE to transmit the common interleaving in the at least one RB set according to configuration information.

26. The apparatus of claim 25, wherein the configuration information is maintained in one or more memories of the UE.

27. The apparatus of claim 25, wherein at least one of the one or more processors is further configured to cause the UE to receive a radio resource control message indicating the configuration information.

28. A method for wireless communication performed by a user equipment (UE), the method comprising: Monitoring at least one sidelink channel associated with unlicensed spectrum for multiple sidelink communications; as well as A subset of PSFCH communications in the Physical Side Link Feedback Channel (PSFCH) communications set is transmitted using a second set of multiple resource blocks (RBs) that are consecutive in the frequency domain, wherein the second set of multiple RBs is selected from a first set of multiple RBs corresponding to the PSFCH communications set, and wherein the first set of multiple RBs is selected using an initial PSFCH selection process.

29. The method of claim 28, wherein the second plurality of RB sets are selected using an additional PSFCH selection process, wherein the additional PSFCH selection process includes a continuation of the initial PSFCH selection process.

30. The method of claim 28, wherein the second plurality of RB sets are selected using a set of weighted priority values, and wherein each weighted priority value in the set of weighted priority values ​​is associated with a corresponding PSFCH communication in the set of PSFCH communications.

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