EP4639823A1

EP4639823A1 - Resource selection for interlace resource block-based transmissions

Info

Publication number: EP4639823A1
Application number: EP22968920.3A
Authority: EP
Inventors: Shaozhen GUO; Changlong Xu; Jing Sun; Chih-Hao Liu; Siyi Chen; Luanxia YANG; Xiaoxia Zhang; Hao Xu
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2025-10-29
Also published as: WO2024130619A1; CN120419119A

Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive an indication of at least one parameter from a higher layer of the UE. The at least one parameter may be used at the UE for selection of resources for interlace resource block-based (RB-based) communications. The at least one parameter may indicate an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The UE may perform a resource identification procedure on a set of candidate resources to select the set of available resources. The set of available resources may be selected from the frequency domain resource allocation and the set of candidate resources may be based on the RB set assignment, the subchannel assignment, or both. The UE may transmit the interlace RB-based sidelink communication using one or more resources of the set of available resources.

Description

RESOURCE SELECTION FOR INTERLACE RESOURCE BLOCK-BASED TRANSMISSIONS

FIELD OF TECHNOLOGY
The following relates to wireless communication, including resource selection for interlace resource block-based (RB-based) transmissions.

BACKGROUND

Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) . Some communications systems may support a resource allocation mode in which a UE may select resources for transmission of a sidelink communication. In some cases, resource selection procedures performed at the UE may be deficient.
SUMMARY
The described techniques relate to improved methods, systems, devices, and apparatuses that support resource selection for interlace resource block-based (RB-based) transmissions. For example, the described techniques provide a framework for selecting resources for an interlace RB-based sidelink communication. In some examples, a lower layer of a UE may receive an indication of at least one parameter from a higher layer of the UE. The at least one parameter may be used at the UE for selection of resources for interlace RB-based communications. In some examples, the at least one parameter may indicate an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The UE may perform a resource identification procedure on a set of candidate resources to select the set of available resources for the interlace RB-based sidelink communication. In some examples, the set of available resources may be selected from the frequency domain resource allocation. Additionally, in some examples, the set of candidate resources may be based on the RB set assignment, the subchannel assignment, or both. The UE may transmit the interlace RB-based sidelink communication to another UE using one or more resources of the set of available resources.
A method for wireless communication at a UE is described. The method may include Receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation, performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both, and transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
An apparatus for wireless communication at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation, perform a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both, and transmit the interlace RB-based sidelink communication using one or more resources of the set of available resources.
Another apparatus for wireless communication at a UE is described. The apparatus may include means for Receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation, means for performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both, and means for transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to receive, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation, perform a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both, and transmit the interlace RB-based sidelink communication using one or more resources of the set of available resources.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the indication may include operations, features, means, or instructions for receiving the indication of the at least one parameter that identifies a quantity of subchannels associated with each RB set included in the frequency domain resource allocation, where the quantity of subchannels indicates the subchannel assignment and the RB set assignment for the frequency domain resource allocation.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the indication may include operations, features, means, or instructions for receiving the indication of the at least one parameter that identifies a quantity of RB sets and one or more quantities of subchannels associated with the quantity of RB sets, where the quantity of RB sets identifies the RB set assignment and the one or more quantities of subchannels identifies the subchannel assignment.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the one or more quantities of subchannels may be a single quantity of subchannels common to each RB set of the quantity of RB sets.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the one or more quantities of subchannels may be a set of multiple quantities of subchannels and each quantity of subchannels of the set of multiple quantities of subchannels may be associated with a respective RB set of the quantity of RB sets.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the indication may include operations, features, means, or instructions for receiving the indication of the at least one parameter that identifies a frequency resource indicator value, where the RB set assignment and the subchannel assignment may be identified based on the frequency resource indicator value.
Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the higher layer of the UE, a report that indicates the set of available resources and receiving, from the higher layer of the UE, scheduling information for the interlace RB-based sidelink communication based on the report, where the scheduling information identifies the one or more resources used for transmitting the interlace RB-based sidelink communication.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the report may include operations, features, means, or instructions for transmitting an indication of one or more available subchannels that identifies the set of available resources, where each available subchannel of the one or more available subchannels may be associated with an RB set included in the frequency domain resource allocation.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the report may include operations, features, means, or instructions for transmitting an indication of one or more available single-slot resources that identifies the set of available resources, where each available single-slot resource of the one or more available single-slot resources includes one or more subchannels associated with one or more RB sets included in the frequency domain resource allocation.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the report may include operations, features, means, or instructions for transmitting an indication of one or more available single-slot resource sets that identifies the set of available resources, where each available single-slot resource set of the one or more available single-slot resource sets includes one or more subchannels associated with a quantity of contiguous RB sets included in the frequency domain resource allocation.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each subchannel of the one or more subchannels may be included in each RB set of the quantity of contiguous RB sets and corresponds to a respective subchannel index that may be common to the quantity of contiguous RB sets.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each subchannel of the one or more subchannels may be included in an RB set of the quantity of contiguous RB sets.
Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a proportion of available single-slot resources associated with each RB set included in the frequency domain resource allocation based on the resource identification procedure, where selecting the set of available resources may be based on the determination.
Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a maximum quantity of available subchannels associated with each RB set included in the frequency domain resource allocation based on the resource identification procedure, where selecting the set of available resources may be based on the determination.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the interlace RB-based sidelink communication includes a multiple consecutive slot transmission and the at least one parameter may be associated with one or more slots.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each available resource of the set of available resources includes a set of consecutive single-slot resources that may be associated with a set of multiple slots.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each consecutive single-slot resource of the set of consecutive single-slot resources may be associated with a slot of the set of multiple slots and a set of RB sets included in the frequency domain resource allocation.
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, each consecutive single-slot resource of the set of consecutive single-slot resources may be associated with the set of multiple slots and a same set of RB sets included in the frequency domain resource allocation.
The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.
While aspects and embodiments are described in this application by illustration to some examples, those skilled in the art will understand that additional implementations and use cases may come about in many different arrangements and scenarios. Innovations described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, packaging arrangements. For example, embodiments and/or uses may come about via integrated chip embodiments and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described innovations may occur. Implementations may range in spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating described aspects and features may also necessarily include additional components and features for implementation and practice of claimed and described embodiments. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, radio frequency (RF) -chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders/summers, etc. ) . It is intended that innovations described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of a wireless communications system that supports resource selection for interlace resource block-based (RB-based) transmissions in accordance with one or more aspects of the present disclosure.
FIG. 2 illustrates an example of a network architecture that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIG. 3 illustrates an example of a wireless communications systems that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIGs. 4 through 6 each illustrate an example of an RB set configuration that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIG. 7 illustrates an example of a process flow that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIGs. 8 and 9 illustrate block diagrams of devices that support resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIG. 10 illustrates a block diagram of a communications manager that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIG. 11 illustrates a diagram of a system including a device that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.
FIGs. 12 through 14 illustrate flowcharts showing methods that support resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure.

DETAILED DESCRIPTION

Some wireless communications systems may support a resource allocation mode for sidelink communication in which a user equipment (UE) may select resources of a radio frequency spectrum band for transmission of a sidelink communication. For example, prior to transmitting a sidelink communication, such as a physical sidelink shared channel (PSSCH) or physical sidelink control channel (PSCCH) communication, a higher layer of a protocol stack at the UE may trigger a lower layer of the protocol stack to perform resource identification (e.g., resource sensing and resource exclusion) . In some examples, the higher layer may be a medium access control (MAC) layer and the lower layer may be a physical (PHY) layer, which may also be referred to as Layer 1 (L1) . The higher layer may trigger the lower layer to perform a resource identification procedure on a set of candidate resources within a frequency domain resource allocation of a resource pool or a sidelink resource pool for wireless communication. In some examples, the lower layer may use the resource identification procedure to determine a subset of resources from the set of candidate resources that may be available for the sidelink communication. That is, the lower layer may use the resource identification procedure to determine a set of available resources from the set of candidate resources. The lower layer of the protocol stack may report the set of available resources to the higher layer and the higher layer may use the set of available resources to schedule the sidelink communication at the lower layer. In some examples, the resource identification procedure may be designed for contiguous RB-based transmissions. For example, a candidate resource of the set of candidate resources may include a set of contiguous subchannels, in which a contiguous subchannel may include one or more contiguous RBs. That is, a frequency domain resource allocation granularity associated with contiguous RB-based transmissions may include a set of contiguous RBs.
In some examples, a wireless communications system may support sidelink communication via a shared radio frequency spectrum band (e.g., an unlicensed wireless spectrum) . However, the wireless communications system may not support contiguous RB-based communications via the shared radio frequency spectrum, for example, due to occupied channel bandwidth (OCB) constraints. For example, the wireless communications system may instead support interlace RB-based communications in which a candidate resource may include non-contiguous RBs. For instance, a candidate resource for interlace RB-based communications may include one or more subchannels, in which a subchannel may include one or more sets of non-contiguous RBs. In some examples, a set of non-contiguous RBs may be referred to as an interlace. Because a frequency domain resource allocation granularity associated with interlace RB-based communications may be constrained to a set of non-contiguous RBs (e.g., an interlace) , resource identification procedures based on contiguous RB-based communications may not support interlace RB-based communications via the shared radio frequency spectrum band. For example, such procedures may lack a mechanism, much less an effective mechanism, for providing the lower layer with parameters for determining a subset of available resources for an interlace RB-based sidelink communication.
Various aspects of the present disclosure generally relate to techniques for resource selection for interlace resource RB-based transmissions, and more specifically, to a framework for determining a set of available resources for an interlace RB-based sidelink transmission. For example, the higher layer of the protocol stack used at the UE may indicate an RB set assignment, a subchannel assignment, or both, to the lower layer of the protocol stack. The lower layer may use the RB set assignment or the subchannel assignment, or both, for determining a set of candidate resources for an interlace RB-based sidelink transmission. That is, the lower layer may use the RB set assignment or the subchannel assignment, or both, for determining a set of candidate resources on which the lower layer may perform resource identification to determine a set of available resources for the interlace RB-based transmission. For example, the UE may be configured with a frequency domain resource allocation, which may include multiple RB sets. In such an example, the RB set assignment may include one or more RB sets included in the frequency domain resource allocation that the UE may use for interlace RB-based sidelink communications. Additionally, the subchannel assignment may include one or more subchannels within the one or more RB sets.
In some examples, the higher layer may indicate the RB set assignment or the subchannel assignment, or both, to the lower layer via one or more parameters. For example, the higher layer may provide the lower layer with a parameter that indicates a quantity of subchannels across multiple RB sets included in the frequency domain resource allocation. In such an example, the lower layer may determine the RB set assignment and the subchannel assignment using the indicated quantity of subchannels. In some other examples, the higher layer may provide the lower layer with one or more parameters that indicate a quantity of RB sets and a quantity of subchannels associated with each RB set. In such examples, the lower layer may use the quantity of RB sets to determine the RB set assignment and the quantity of subchannels to determine the subchannel assignment. In some examples, the one or more parameters may include a frequency resource indicator. For example, the lower layer may map a value of the frequency resource indicator to a quantity of RB sets and a quantity of subchannels associated with each RB set. In some examples, the higher layer may trigger the lower layer to perform resource selection for an interlace RB-based transmission across multiple consecutive slots. In such examples, the higher layer may provide the lower layer with one or multiple sets of parameters. For example, the higher layer may provide the lower layer with a same set of parameters for the multiple consecutive slots or multiple (e.g., different) sets of parameters for the multiple consecutive slots. Additionally, or alternatively, the lower layer may report the set of available resources to the higher layer, in which an available resource may include a single-slot resource or a multi-slot resource.
In some examples, providing the UE with a framework for determining a set of available resources for an interlace RB-based sidelink transmission may lead to improved sidelink communications via the shared radio frequency spectrum band, among other possible benefits. Aspects of the disclosure are initially described in the context of wireless communications systems and a network architecture. Aspects of the disclosure are also described in the context of RB set configurations and a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to resource selection for interlace RB-based transmissions.
FIG. 1 illustrates an example of a wireless communications system 100 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-APro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.
As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) , one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140) .
In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more RUs 170) . In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.
In wireless communications systems (e.g., wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140) . The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120) . IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.
In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support resource selection for interlace RB-based transmissions as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180) .
A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105) .
Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of T _s=1/ (Δf _max·N _f) seconds, for which Δf _max may represent a supported subcarrier spacing, and N _f may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., N _f) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.
The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
In some systems, a D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) . In some examples, vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., network entities 105, base stations 140, RUs 170) using vehicle-to-network (V2N) communications, or with both.
The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
The wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.
The wireless communications system 100 may support a resource allocation mode in which a UE 115 may select resources for transmission of a sidelink communication. In some cases, a procedure performed at the UE 115 to select the resources for transmission of the sidelink communication may be deficient for sidelink communications via a shared radio frequency spectrum band. For example, the procedure for resource selection (e.g., a resource identification procedure) may be based on contiguous RB-based communications and may lack a mechanism for providing a lower layer of the UE 115 with parameters for determining a set of available resources for an interlace RB-based sidelink communication (e.g., via the shared radio frequency spectrum band) .
In some examples, the wireless communications system 100 may support a framework for providing the lower layer of the UE 115 with one or more parameters for determining the set of available resources for an interlace RB-based sidelink communication. For example, the lower layer of a UE 115 may receive an indication of at least one parameter from a higher layer of the UE 115. The at least one parameter may be used at the UE 115 for selection of resources for interlace RB-based communications. In some examples, the at least one parameter may indicate an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation (e.g., within a resource pool allocated for sidelink communication in unlicensed radio spectrum) . The UE 115 may perform a resource identification procedure on a set of candidate resources to select the set of available resources for the interlace RB-based sidelink communication. In some examples, the set of available resources may be selected from the frequency domain resource allocation and the set of candidate resources may be based on the RB set assignment, the subchannel assignment, or both. The UE 115 may transmit the interlace RB-based sidelink communication (e.g., to another UE 115) using one or more resources of the set of available resources. In some examples, by providing the lower layer with the at least one parameter for determining the RB set assignment, the subchannel assignment, or both, the higher layer of the UE 115 may improve a throughput and reliability of sidelink communications via the shared radio frequency spectrum band, among other possible benefits.
FIG. 2 illustrates an example of a network architecture 200 (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The network architecture 200 may illustrate an example for implementing one or more aspects of the wireless communications system 100. The network architecture 200 may include one or more CUs 160-a that may communicate directly with a core network 130-a via a backhaul communication link 120-a, or indirectly with the core network 130-a through one or more disaggregated network entities 105 (e.g., a Near-RT RIC 175-b via an E2 link, or a Non-RT RIC 175-aassociated with an SMO 180-a (e.g., an SMO Framework) , or both) . A CU 160-a may communicate with one or more DUs 165-a via respective midhaul communication links 162-a (e.g., an F1 interface) . The DUs 165-a may communicate with one or more RUs 170-a via respective fronthaul communication links 168-a. The RUs 170-a may be associated with respective coverage areas 110-a and may communicate with UEs 115-avia one or more communication links 125-a. In some implementations, a UE 115-a may be simultaneously served by multiple RUs 170-a.
Each of the network entities 105 of the network architecture 200 (e.g., CUs 160-a, DUs 165-a, RUs 170-a, Non-RT RICs 175-a, Near-RT RICs 175-b, SMOs 180-a, Open Clouds (O-Clouds) 205, Open eNBs (O-eNBs) 210) may include one or more interfaces or may be coupled with one or more interfaces configured to receive or transmit signals (e.g., data, information) via a wired or wireless transmission medium. Each network entity 105, or an associated processor (e.g., controller) providing instructions to an interface of the network entity 105, may be configured to communicate with one or more of the other network entities 105 via the transmission medium. For example, the network entities 105 may include a wired interface configured to receive or transmit signals over a wired transmission medium to one or more of the other network entities 105. Additionally, or alternatively, the network entities 105 may include a wireless interface, which may include a receiver, a transmitter, or transceiver (e.g., an RF transceiver) configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other network entities 105.
In some examples, a CU 160-a may host one or more higher layer control functions. Such control functions may include RRC, PDCP, SDAP, or the like. Each control function may be implemented with an interface configured to communicate signals with other control functions hosted by the CU 160-a. A CU 160-a may be configured to handle user plane functionality (e.g., CU-UP) , control plane functionality (e.g., CU-CP) , or a combination thereof. In some examples, a CU 160-a may be logically split into one or more CU-UP units and one or more CU-CP units. A CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration. A CU 160-a may be implemented to communicate with a DU 165-a, as necessary, for network control and signaling.
A DU 165-a may correspond to a logical unit that includes one or more functions (e.g., base station functions, RAN functions) to control the operation of one or more RUs 170-a. In some examples, a DU 165-a may host, at least partially, one or more of an RLC layer, a MAC layer, and one or more aspects of a PHY layer (e.g., a high PHY layer, such as modules for FEC encoding and decoding, scrambling, modulation and demodulation, or the like) depending, at least in part, on a functional split, such as those defined by the 3rd Generation Partnership Project (3GPP) . In some examples, a DU 165-a may further host one or more low PHY layers. Each layer may be implemented with an interface configured to communicate signals with other layers hosted by the DU 165-a, or with control functions hosted by a CU 160-a.
In some examples, lower-layer functionality may be implemented by one or more RUs 170-a. For example, an RU 170-a, controlled by a DU 165-a, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (e.g., performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower-layer functional split. In such an architecture, an RU 170-a may be implemented to handle over the air (OTA) communication with one or more UEs 115-a. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 170-a may be controlled by the corresponding DU 165-a. In some examples, such a configuration may enable a DU 165-a and a CU 160-a to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
The SMO 180-a may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network entities 105. For non-virtualized network entities 105, the SMO 180-a may be configured to support the deployment of dedicated physical resources for RAN coverage requirements which may be managed via an operations and maintenance interface (e.g., an O1 interface) . For virtualized network entities 105, the SMO 180-a may be configured to interact with a cloud computing platform (e.g., an O-Cloud 205) to perform network entity life cycle management (e.g., to instantiate virtualized network entities 105) via a cloud computing platform interface (e.g., an O2 interface) . Such virtualized network entities 105 can include, but are not limited to, CUs 160-a, DUs 165-a, RUs 170-a, and Near-RT RICs 175-b. In some implementations, the SMO 180-a may communicate with components configured in accordance with a 4G RAN (e.g., via an O1 interface) . Additionally, or alternatively, in some implementations, the SMO 180-a may communicate directly with one or more RUs 170-a via an O1 interface. The SMO 180-a also may include a Non-RT RIC 175-a configured to support functionality of the SMO 180-a.
The Non-RT RIC 175-a may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence (AI) or Machine Learning (ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 175-b. The Non-RT RIC 175-a may be coupled to or communicate with (e.g., via an A1 interface) the Near-RT RIC 175-b. The Near-RT RIC 175-b may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (e.g., via an E2 interface) connecting one or more CUs 160-a, one or more DUs 165-a, or both, as well as an O-eNB 210, with the Near-RT RIC 175-b.
In some examples, to generate AI/ML models to be deployed in the Near-RT RIC 175-b, the Non-RT RIC 175-a may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 175-b and may be received at the SMO 180-a or the Non-RT RIC 175-a from non- network data sources or from network functions. In some examples, the Non-RT RIC 175-a or the Near-RT RIC 175-b may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 175-a may monitor long-term trends and patterns for performance and employ AI or ML models to perform corrective actions through the SMO 180-a (e.g., reconfiguration via O1) or via generation of RAN management policies (e.g., A1 policies) .
In some examples, the network architecture 200 may support a framework for providing a lower layer of a UE 115 with one or more parameters for determining a subset of available resources for an interlace RB-based sidelink communication. For example, the lower layer of a UE 115 may receive an indication of at least one parameter from a higher layer of the UE 115. The at least one parameter may be used at the UE 115 for selection of resources for interlace RB-based communications. In some examples, the at least one parameter may indicate an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The UE 115 may perform a resource identification procedure on a set of candidate resources to select the set of available resources for the interlace RB-based sidelink communication. In some examples, the set of available resources may be selected from the frequency domain resource allocation and the set of candidate resources may be based on the RB set assignment, the subchannel assignment, or both. The UE 115 may transmit the interlace RB-based sidelink communication (e.g., to another UE 115) using one or more resources of the set of available resources. In some examples, the framework may lead to increased reliability and throughput for sidelink communications between the UEs 115, among other possible benefits.
FIG. 3 illustrates an example of a wireless communications system 300 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The wireless communications system 300 may implement or be implemented at one or more aspects of the wireless communications system 100 and the network architecture 200. For example, the wireless communications system 300 may include a UE 315-a and a UE 315-b, which may be examples of a UE illustrated by and described with reference to FIGs. 1 and 2. The UEs 315 may communicate via a communication link 310, which may be an example of a communication link illustrated by and described with reference to FIGs. 1 and 2. In the example of FIG. 3, the communication link 310 may be an example of a sidelink (e.g., a PC5 interface) .
In some examples, the wireless communications system 300 may support a resource allocation mode for sidelink communications in which the UEs 315 may select resources of a radio frequency spectrum band for transmission of a sidelink communication (e.g., a PSSCH transmission or a PSCCH transmission) . For example, the wireless communications system 300 may support a resource allocation mode for sidelink communications in which the UEs 315 may autonomously allocate resources of a licensed radio frequency spectrum band, which may be referred to as a licensed spectrum, for transmission of a PSSCH transmission or a PSCCH transmission. In some examples, prior to transmitting the sidelink communication a higher layer of a protocol stack at the UE 315-a may trigger a lower layer (e.g., L1) of the protocol stack to perform resource identification (e.g., a resource sensing procedure and a resource exclusion procedure) . In some examples, the higher layer may trigger L1 to perform the resource sensing procedure and the resource exclusion procedure on a set of candidate resources within a resource pool or a sidelink resource pool, to determine (and report) a subset of resources from the set of candidate resources that may be available for the sidelink communication. That is, the higher layer may trigger L1 to report a set of available resources for the sidelink communication (e.g., a PSSCH transmission or a PSCCH transmission) .
In some examples in which L1 may be triggered to report the set of available resources, a set of parameters may be provided to L1 by the higher layer of the UE. For example, the higher layer may provide L1 with an L1 priority (prio _TX) associated with the sidelink communication, a remaining packet delay budget (PDB) associated with the sidelink communication, a quantity of subchannels to be used for the sidelink communication (L _subCH) , a resource reservation interval (e.g., a reservation periodicity) associated with the sidelink communication (P _{rsvp_TX}) , or any combination thereof. The quantity of subchannels (L _subCH) may indicate a quantity of sub-channels to be used for the sidelink communication in a slot (e.g., a slot 330) . In some examples, the UE may perform L1 candidate resource identification (e.g., including the resource sensing procedure and the resource exclusion procedure) based on the set of parameters. That is, in response to receiving the set of parameters from the higher layer, L1 may use the set of parameters to identify the set of candidate resources (e.g., on which L1 may perform the resource sensing and the resource exclusion procedures to select the set of available resources) .
In some examples in which L1 may report the set of available resources to the higher layer, L1 may report available single-slot resources in a set (S _A) of candidate single-slot resources (e.g., a set of all the candidate single-slot resources) to the higher layer. That is, in some examples, the set of candidate resources may include a set of candidate single-slot resources. In some examples, such as for contiguous RB-based transmissions, a candidate single-slot resource for a contiguous RB-based transmission (R _x, y) may be defined as a set of L _subCH contiguous subchannels (e.g., contiguous with subchannel x+j in slot in which denotes a slot that may belong to a sidelink resource pool) . That is, for contiguous RB-based transmissions, a frequency domain resource allocation granularity may be (e.g., be constrained to) a set of L _subCH contiguous subchannels.
For example, if a value of L _subCH is 2, a single-slot resource may include two contiguous subchannels in a frequency domain and one slot in a time domain. That is, if a first slot (e.g., slot 0) includes 4 contiguous subchannels indexed from 0 to 3, a quantity of candidate single-slot resources associated with the first slot may be 3 (e.g., may be up to 3) . For example, if a value of L _subCH is 2, candidate single-slot resources associated with the first slot (e.g., slot 0) may include a first candidate single-slot resource including subchannels with indices 0 and 1 (R _0, 0) , a second candidate single-slot resource including subchannels with indices 1 and 2 (R _0, 1) , and a third candidate single-slot resource including subchannels with indices 2 and 3 (R _0, 2) . Similarly, if a value of L _subCH is 2, candidate single-slot resources associated with a second slot (e.g., slot 1) that includes 4 contiguous subchannels index from 4 to 7 may include a first candidate single-slot resource including subchannels with indices 4 and 5 (R _1, 0) , a second candidate single-slot resource including subchannels with indices 5 and 6 (R _1, 1) , and a third candidate single-slot resource including subchannels with indices 6 and 7 (R _1, 2) . In such examples, the set (S _A) of candidate single-slot resources for slot 0 and slot 1 may include 6 candidate single-slot resources (e.g., R _0, 0, R _0, 1, R _0, 2, R _1, 0, R _1, 1, R _1, 2) .
In some examples, L1 may perform the resource exclusion procedure using the set (S _A) of candidate single-slot resources for slot 0 and slot 1. In such examples, if a quantity of candidate single-slot resources remaining in the set (S _A) is less than a value of P·M _total (e.g., after performing the resource exclusion procedure) , a reference signal received power (RSRP) threshold used as part of the resource exclusion procedure may be increased by a quantity (e.g., about 3 dB) for each receiver priority value associated with the transmitter priority (prio _TX) and the resource exclusion procedure may continue (e.g., repeat) . In such examples, P may be an internal parameter based on the parameter prio _TX and M _total may be a quantity of candidate single-slot resources (e.g., a total quantity of candidate single-slot resources, the 6 candidate single-slot resources) . For example, in response to resource selection being triggered, L1 may identify the set of candidate single-slot resources and may exclude one or more (e.g., any) candidate single-slot resource that satisfy one or more criteria from the set of candidate single-slot resources. For instance, L1 may exclude a candidate single-slot resource (e.g., from the subset, from the set of available resources) if a value of an RSRP measurement performed at L1 on the candidate single-slot resource is satisfies (e.g., is greater than) the RSRP threshold. In such an example, if the quantity of candidate single-slot resources remaining in the set (S _A) of candidate single-slot resources is smaller than P·M _total, the UE may increase the RSRP threshold by the quantity (e.g., about 3 dB) and continue (e.g., repeat) the resource exclusion procedure.
In some examples, one or more subchannels in the first slot (e.g., the contiguous subchannels indexed from 0 to 3) or the second slot (e.g., the contiguous subchannels indexed from 4 to 7) , or both, may be unavailable. For example, based on the resource identification procedure, L1 may determine that the subchannel with an index of 2 may be unavailable. In such an example, L1 may determine to exclude candidate single-slot resources that include the subchannel with the index of 2 (e.g., the second candidate resource of the first slot (R _0, 1, ) and the third candidate resource of the first slot (R _0, 2) ) . Additionally, or alternatively, based on the resource identification procedure, L1 may determine that the subchannel with an index of 7 may be unavailable. In such an example, the UE may determine to exclude candidate single-slot resources that include the subchannel with the index of 7 (e.g., the third candidate resource of the second slot (R _0, 2) ) . In some examples, the quantity (e.g., subset) of candidate single-slot resources remaining in the set (S _A) of candidate single-slot resources after one or more exclusion procedures may include the set of available resources.
In some examples, the wireless communications system 300 may be extended to support sidelink transmissions via the shared radio frequency spectrum band, which may be referred to as an unlicensed radio frequency spectrum band (e.g., an unlicensed spectrum) . For example, for PSCCH and PSSCH transmissions using the unlicensed spectrum (e.g., for sidelink unlicensed (SL-U) ) , the wireless communications system 300 may support interlace RB-based sidelink transmissions. In some examples, for interlace RB-based sidelink transmissions (e.g., for interlace RB-based transmissions for PSCCH and PSSCH in SL-U) , a frequency domain resource allocation granularity may include one subchannel for a PSSCH transmission or a PSCCH transmission. In such an example, the PSSCH transmission (or the PSCCH transmission) may occupy one or more interlaces. That is, a subchannel used for the PSSCH transmission may include (e.g., correspond to) a quantity (K) of interlaces. For example, a frequency domain resource allocation granularity (e.g., a minimum frequency domain resource allocation granularity) for interlace RB-based PSSCH transmissions may be one interlace. In such an example, the PSSCH transmission may occupy an interlace, and coded bits associated with the PSSCH transmission may be included in multiple (e.g., different) RBs of the interlace, for example using rate-matching. That is, the UE 315-amay encode data in the PSSCH and rate-match the data to multiple (e.g., different) RBs included in the interlace.
As illustrated in the example of FIG. 3, an interlace may include a set of RBs which are non-contiguous and repeat in accordance with a pattern (e.g., a fixed interval) . For example, an RB set 325 may include multiple interlaces, which may each include multiple RBs. In the example of FIG. 3, the RB set 325 may include 5 interlaces. In some examples, each interlace included in the RB set 325 may have a pattern (e.g., a fixed pattern) . For example, a value of K may be 1, such that a subchannel 340 may include an interlace (e.g., a single interlace) . In some examples, the interlace may include 5 RBs and a quantity of RBs between each of the 5 RBs may be fixed. That is, a same quantity of RBs may occur between two RBs of the interlace, such that the RBs of an interlace may repeat according to a pattern (e.g., an interlace pattern) . For example, 4 RBs may occur between an RB 335-a and an RB 335-b. In some examples, an RB 335-c of the subchannel 340 may be included in a gap between the RB set 325 and a subsequent RB set. That is, the RB set 325 may be succeeded by (e.g., followed by) the RB 335-c and a guard band 345 (e.g., to create a gap between the RB set 325 and the subsequent RB set) . In the example of FIG. 3, the subchannel 340 may correspond to a first subchannel of the 5 subchannels included in the RB set 325. Accordingly, the subchannel 340 may have an index of 0.
In some examples, the frequency domain resource allocation granularity (e.g., a value of K) may be fixed. For example, the value of K may be 1 or another configured or pre-configured value. In some other examples, the value of K may change (e.g., dynamically or semi-statically) . Additionally, or alternatively, the value of K may be based on a subcarrier spacing associated with the PSSCH transmission. For example, the UE may determine that a subchannel equals K interlaces, in which at least K=1 and K=2 may be supported for a first subcarrier spacing (e.g., a 15 kHz subcarrier spacing) and at least K=1 may be supported for a second subcarrier spacing (e.g., a 30 kHz subcarrier spacing) . That is, a subchannel may occupy one interlace (K=1) or two interlaces (K=2) for a PSSCH transmission associated with the first subcarrier spacing and one interlace (K=1) for a PSSCH transmission associated with the second subcarrier spacing. In some examples, if a PSSCH transmission is to occupy one subchannel, the UE may use the value of K to determine the quantity of interlaces to be use for the PSSCH transmission.
In some examples, used interlace indices may be based on an RB set. For example, the used interlace indexes may be common to (or different across) multiple RB sets. That is, subsequent to a value of K being configured (or preconfigured) , the value of K may be common to multiple (e.g., all) RB sets. In other words, each subchannel may include a same number of interlaces. In some instances, however, the quantity of subchannels, interlaces, or subchannel/interlace indices, or both, used at the UE across the multiple RB sets may be same or different. In some examples, the UE 315-a may use one or more parameters to indicate a frequency domain resource used for an interlace RB-based PSSCH transmission to the UE 315-b (e.g., and one or more other UEs) . For example, the UE 315-a may transmit a first frequency domain resource indication for an interlace RB-based PSSCH transmission that may indicate whether the UE 315-a used one interlace index (e.g., a same interlace index) or multiple interlace indices (e.g., different interlace indices) across multiple RB sets. That is, each interlace may correspond to a respective interlace index and the first frequency domain resource indication may indicate whether one or more interlaces used for an interlace RB-based PSSCH transmission in a first RB set may also be used the interlace RB-based transmission in one or more other RB sets.
In some examples, if multiple (e.g., more than one) RB sets are used for an interlace RB-based PSSCH transmission, the UE 315-a may determine to use (e.g., may down-select) a same one or more interlace indices across the multiple RB sets. For example, the UE 315-a may determine to use a same one or more interlace indices in the multiple RB sets. In such examples, the first frequency domain resource indication may indicate the quantity of interlaces/subchannels or the interlace/subchannel indices, or both, used for the interlace RB-based PSSCH transmission (e.g., for each RB set occupied by the interlace RB-based PSSCH transmission) . Additionally, or alternatively, the UE 315-a may determine to use multiple (e.g., different) interlace indices across the multiple RB sets. In such an example, the first frequency domain resource indication may indicate a respective quantity of interlaces/subchannels or respective interlace/subchannel indices, or both, for each RB set used for the interlace RB-based PSSCH transmission.
Additionally, or alternatively, the UE 315-a may transmit a second frequency domain resource indication for the interlace RB-based PSSCH transmission that may indicate one or more RB sets, used for the interlace RB-based PSSCH transmission. For example, the UE 315-a may use (e.g., down-select) the second frequency domain resource indication to explicitly indicate one or more RB set indices used for the interlace RB-based PSSCH transmission. In some other examples, the UE 315-a may use (e.g., down-select) the second frequency domain resource indication to explicitly indicate the one or more subchannel indices that may be used for the interlace RB-based PSSCH transmission. In such examples, while the one or more RB set indices may not be explicitly indicated, the UE 315-b may identify the one or more RB set indices based on the one or more subchannel indices. For example, multiple subchannels may be indexed across the multiple RB sets (e.g., each subchannel index may map to a subchannel and a corresponding RB set) . In such an example, the UE 315-b may determine the one or more RB sets (e.g., the one or more RB set indices) based on the one or more subchannel indices. In some examples, the first frequency domain resource indication or the second frequency domain resource indication, or both, may be included in sidelink control information (SCI) .
In some examples, the wireless communications system 300 may support multiple consecutive slot transmission (MCSt) operation in SL-U. In such examples, if L1 is triggered for reporting a subset of candidate resources for MCSt (e.g., a set of available resources for MCSt) , one set of parameters (e.g., prio _TX, remaining PDB, L _subCH and P _{rsvp_TX}) may be provided to L1 for the resource selection procedure (e.g., in L1) . For example, the higher layer may provide L1 with one set of parameters for transmission of a single TB or multiple TBs. In such examples, the one set of parameters may apply to each (e.g., all) RB sets included in the frequency domain resource allocation. In some other examples, the higher layer may provide multiple (e.g., different) sets of parameters (e.g., prio _TX, remaining PDB, L _subCH and P _{rsvp_TX}) to L1 for the resource selection procedure (e.g., in L1) . In such examples, a set parameters of the multiple sets of parameters may apply to a respective RB set included in the frequency domain resource allocation. In some examples, other information may be provided to L1 for MCSt.
In some examples, L1 may report the set of available resources for MCSt to the higher layer. For example, multi-slot resource selection may be identified by L1. In such an example, L1 may report candidate multi-slot resources in the set (S _A) of candidate single-slot resources. For example, a candidate multi-slot resource may include a set of single-slot resources that may be consecutive in the time domain. In some examples, the set of single-slot resources within a candidate multi-slot resource may include a different quantity of subchannels (e.g., a different L _subCH sizes) . In some other examples, L1 may report candidate single-slot resources in the set (S _A) of candidate single-slot resources. In such an example, the higher layer may (e.g., the MAC layer) may select a set of single-slot resources that may be consecutive (e.g., in logical slots) . In some examples, L1 may report consecutive single-slot candidate resources in the set (S _A) of candidate single-slot resources. In such examples, the consecutive single-slot candidate resources may include multiple (e.g., different) quantities of subchannels (e.g., a different L _subCH sizes) . In some examples, other information may be reported to the higher layer or provided to L1. That is, other information may be utilized at the higher layer, L1, or both, for MCSt. For example, the other information may indicate a duration for a clear channel access procedure, such as a listen-before-talk (LBT) procedure. In some examples, the other information may indicate the duration (e.g., additional LBT time) in a sidelink resource allocation (e.g., including the frequency domain resource allocation) .
In some examples, however, for PSCCH and PSSCH transmissions using the unlicensed spectrum (e.g., for SL-U) , the wireless communications system 300 may not support contiguous RB-based communications. For example, the wireless communications system 300 may not support contiguous RB-based communications via the unlicensed spectrum due to OCB constraints. In such an example, to satisfy OCB constraints associated with the unlicensed spectrum (e.g., to enable the UE to perform an LBT procedure for accessing resources of the unlicensed spectrum) , the wireless communications system 300 may support interlace RB-based communications in which frequency domain resources may be non-contiguous. In other words, some sidelink procedures may be designed for the licensed spectrum and include frequency domain resource allocations that are constrained to sets of contiguous RBs (e.g., contiguous sets of subchannels) . However, the wireless communications system 300 may be extended to support the unlicensed spectrum in which interlace RB-based transmissions may be used to satisfy the OCB constraints (e.g., requirements) .
In some examples, a frequency granularity (e.g., a frequency domain resource allocation granularity) for interlace RB-based transmissions may be an interlace (e.g., a set of non-contiguous RBs) . That is, in some examples of interlace RB-based transmission, a subchannel may equal a quantity (K) of interlaces, in which a value of K may be fixed or preconfigured. Additionally, or alternatively, a frequency domain resource allocation for interlace RB-based transmissions may include an RB set assignment (Y) and a sub-channel assignment (X) . In such an example, resource selection procedures designed for contiguous RB-based transmissions may not accommodate resource selection for interlace RB-based transmissions. For example, some L1 resource selection procedures designed for contiguous RB transmissions may lack a mechanism, much less an effective mechanism, for providing L1 with parameters for selecting resources for interlace RB-based transmissions. For example, if an L1 resource selection is triggered, the higher layer may provide L1 with a quantity of subchannels (e.g., contiguous subchannels) as the frequency domain resource allocation granularity of a candidate single-slot resource. In some examples, however, the frequency domain resource allocation for interlace RB-based transmission may include the RB set assignment (Y) and the subchannel assignment (X) . In such examples, a mechanism for determination of the RB set assignment (Y) and the subchannel assignment (X) at L1 may be unclear. In other words, parameters communicated between the higher layer and L1 as part of resource selection procedures designed for contiguous RB-based transmissions may not accommodate a resource selection procedure for interlace RB-based transmissions.
In some examples, one or more techniques for resource selection for interlace RB-based transmissions, as described herein, may provide a framework for determining suitable parameters for a resource selection procedure for interlace RB-based transmissions. For example, in accordance with such techniques, a lower layer (e.g., L1) of the UE 315-a may receive an indication of at least one parameter from a higher layer (e.g., a MAC layer) of the UE 315-a. In such an example, the at least one parameter may be used at the UE 315-a (e.g., at L1) for selection of resources for interlace RB-based communications. For example, the at least one parameter may indicate an RB set assignment (Y) , a subchannel assignment (X) , or both, for a frequency domain resource allocation for an interlace RB-based sidelink communication 320 (e.g., an interlace RB-based PSSCH transmission or an interlace RB-based PSCCH transmission) . In such an example, the UE 315-a (e.g., L1) may perform a resource identification procedure 305 (e.g., include a resource selection procedure and a resource exclusion procedure) on a set of candidate resources (e.g., a set of candidate single-slot resources) . For example, the UE 315-a may perform the resource identification procedure 305 on the second of candidate resources to select the set of available resources (e.g., a subset of the set of candidate single-slot resources) for the interlace RB-based sidelink communication 320. In some examples, the set of candidate resources may be based on the RB set assignment (Y) , the subchannel assignment (X) , or both. The UE 315-a may transmit the interlace RB-based sidelink communication 320 to the UE 315-b using one or more resources of the set of available resources. In some examples, using the at least one parameter to provide L1 with the RB set assignment (Y) , the subchannel assignment (X) , or both, may lead to increased efficiency and reliability of sidelink communications between the UE 315-a and the UE 315-b, among other possible benefits.
FIG. 4 illustrates an example of an RB set configuration 400 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The RB set configuration 400 may implement or be implemented at one or more aspects of the wireless communications system 100, the network architecture 200, and the wireless communications system 300. For example, the RB set configuration 400 may be implemented at a UE, which may be an example of a UE illustrated by and described with reference to FIGs. 1 through 3. The RB set configuration 400 may include one or more RB sets 405 (e.g., an RB set 405-a, an RB set 405-b, an RB set 405-c, and an RB set 405-d) , which may be examples of an RB set illustrated by and described with reference to FIG. 3.
In some examples, the UE may support single-slot L1 resource selection for interlace RB-based sidelink communications. For example, the UE may be configured with a frequency domain resource allocation 406 for a slot 430 that includes the RB set 405-a (e.g., RB set 0) , the RB set 405-b (e.g., RB set 1) , the RB set 405-c (e.g., RB set 2) ) , and the RB set 405-d (e.g., RB set 3) . In such an example, a higher layer (e.g., a MAC layer) of a protocol stack supported at the UE may provide a lower layer of the protocol stack (e.g., L1) with one or more parameters for selecting a set of available resources from the frequency domain resource allocation for a interlace RB-based sidelink communication (e.g., for L1 resource selection for an interlace RB-based sidelink communication using the frequency domain resource allocation 406) . That is, for the interlace RB based transmission, such as an interlace RB-based PSSCH transmission or an interlace RB-based PSCCH transmission, the higher layer may trigger L1 to report the set of available resources (e.g., a subset of candidate resources) and may provide L1 with one or more parameters for the identifying the set of available resources. For example, the higher layer may provide L1 with one or more parameters for identifying an RB set assignment, a subchannel assignment, or both, for the frequency domain resource allocation 406. In some examples, L1 may use the RB set assignment, the subchannel assignment, or both, for identifying a set of candidate resources (e.g., a set of candidate subchannels or a set of candidate single-slot resources) .
In some examples, the set of parameters may include prio _TX, a remaining PDB, a quantity of subchannels (L _subCH) , and P _{rsvp_TX}. In such examples, the quantity of subchannels (L _subCH) may indicate the quantity of subchannels across the RB sets 405 (e.g., all RB sets to be used for the PSSCH transmission or the PSCCH transmission) . That is, the higher layer may provide the L1 with a parameter that identifies a quantity of subchannels (L _subCH) across the RB sets 405 included in the frequency domain resource allocation 406. In some examples, the quantity of subchannels (L _subCH) may indicate the subchannel assignment and the RB set assignment for the frequency domain resource allocation 406.
In some other examples, the set of parameters may include prio _TX, a remaining PDB, a quantity of RB sets (Y _RBset) , a quantity of subchannels per RB set (X _i, in which i=0, 1, …, Y _RBset-1) , and P _{rsvp_TX}. That is, the higher layer may provide L1 with a parameter (Y _RBset) that identifies a quantity of RB sets and another parameter (X _i) that identifies one or more quantities of subchannels associated with the quantity of RB sets. In such examples, the quantity of RB sets (Y _RBset) may identify (e.g., correspond to) the RB set assignment and the one or more quantities of subchannels (X _i) may identify (e.g., correspond to) the subchannel assignment. For example, the quantity of RB sets may be 4 RB sets (Y _RBset=4) . In such an example, the RB set assignment may include 4 RB sets (e.g., the RB set 405-a, the RB set 405-b, the RB set 405-c, and the RB set 405-d) .
In some examples, one or more interlace indices used at the UE in multiple (e.g., different) RB sets may be the same. For example, Y _RBset may be set to a value of 4 and X _i may be set to a value of 1. In such an example, the UE may use an interlace included in the subchannel 410, an interlace included in the subchannel 412, an interlace included in the subchannel 414, and the interlace included in the subchannel 416, which may each have an interlace index of 0 (e.g., corresponding to a subchannel index of 0) . In such an example, the interlace index (e.g., interlace index 0) used in multiple RB sets (e.g., the RB set 405-a, the RB set 405-b, the RB set 405-c, and the RB set 405-d) may be the same. Additionally, if the same interlace index is used across multiple (e.g., different) RB sets, a single quantity of subchannels per RB set (X) may be provided to L1 and applied to each RB set of the Y _RBset RB sets (e.g., the RB set 405-a, the RB set 405-b, the RB set 405-c, and the RB set 405-d) . That is, the one or more quantities of subchannels may be a single quantity of subchannels common to each RB set of the quantity of RB sets (Y _RBset) . Additionally, in such an example, the quantity of subchannels may be 1 subchannel (X=1) and the subchannel assignment may include 4 subchannels (e.g., the subchannel 410, the subchannel 412, the subchannel 414, and the subchannel 416) . In some other examples, if one or more interlace indices used at the UE in multiple (e.g., different) RB sets is different, the higher layer may provide L1 with multiple quantities of subchannels and each quantity of subchannels may be associated with a respective RB set of the quantity of RB sets (Y _RBset) . For example, the higher layer may provide L1 with multiple quantities of (X _i, in which i=0,1, …, Y _RBset-1) in which X _i denotes the quantity of subchannels corresponding to RB set i of the Y _RBset RB sets (e.g., the RB set 405-a, the RB set 405-b, the RB set 405-c, and the RB set 405-d) . That is, X ₀ may denote a quantity of subchannels associated with the RB set 405-a (e.g., RB set 0) and X ₁ may denote a quantity of subchannels associated with the RB set 405-b (e.g., RB set 1) .
In some examples, the set of parameters may include prio _TX , a remaining PDB, a frequency resource indicator, and P _{rsvp_TX}. That is, the higher layer may provide L1 with a parameter that identifies a frequency resource indicator value. In such an example, L1 may use the frequency resource indicator value to identify the RB set assignment and the subchannel assignment. For example, the frequency resource indicator value may be mapped (e.g., uniquely mapped) to a pair of (Y, X) values. In some examples, the frequency resource indicator value may be mapped to a pair of (Y, X) values based on a rule (e.g., a fixed rule, such as an equation) . For example, the frequency resource indicator value may be mapped to a pair of (Y, X) values in accordance with the following Equation 1:
in which N _{subCHperRBset} may correspond to a quantity of subchannels per RB set and N _RBset may correspond to a quantity of RB sets. In such examples, a value of Y may identify the RB set assignment and a value of X may identify the subchannel assignment.
In some examples, L1 may use the set of parameters (e.g., including the one or more parameters that identify the RB set assignment or the subchannel assignment, or both) provided by the higher layer to perform resource selection (e.g., L1 resource identification) . For example, L1 may use the RB set assignment or the subchannel assignment, or both, to identify the set of candidate resources on which the UE will perform resource identification (e.g., L1 resource selection and exclusion) . In such an example, the UE may select one or more candidate single-slot resources. For example, L1 may report a subset of the set of candidate resources that may be available for an interlace RB-based transmission (e.g., the set of available resources) to the higher layer. In some examples, L1 may report candidate single-slot resources to the higher layer, in which a candidate single-slot resource may be defined in accordance with a frequency domain granularity.
In some examples, the frequency domain granularity may be a subchannel. For example, L1 may report candidate subchannels (e.g., a set of available subchannels) to the higher layer, in which a candidate subchannel (e.g., a subchannel included in the set of candidate subchannels) may include K interlaces. In the example of FIG. 4, the frequency domain resource allocation 406 may include 4 RB sets (e.g., the RB sets 405) . Although the example of FIG. 4 illustrates the frequency domain resource allocation 406 being associated with a single-slot, the UE may be configured to perform resource selection (e.g., may use) across a resource selection window, which may include one or multiple slots. In other words, the resource identification procedure, which includes resource selection, may be performed over a set of slots within a resource selection window to identify available resources for the interlaced RB-based transmission. In the example of FIG. 4, the L1 may identify a set of candidate subchannels across the RB sets 405 (e.g., a total quantity of candidate subchannels) . For example, a subchannel may include one interlace and each RB set 405 may support 5 interlaces. That is, 5 interlaces (e.g., 5 subchannels) may be indexed in positions 0 to 4 that repeat over a respective RB set. For example, an interlace may occupy position 0 (e.g., the subchannel 410) , which occurs periodically across the RB set 405-a. In the example of FIG. 4, indices 0 to 4 occur (e.g., repeat) 5 times, thus each interlace may occupy 5 RBs. In the example of FIG. 4, the interlace indexed in position 0 (e.g., the interlace that occupies the subchannel 410) may exclude an RB 450. For example, the RB 450 and a guard band 425 may occur within a gap 420. In some examples, a value of K may be 1 and the quantity of subchannels across the RB sets 405 (e.g., the total quantity of candidate subchannels) is 20 subchannels. In other words, because the value of K is 1 and because the RB sets 405 each support 5 interlaces, each RB set 405 includes 5 subchannels and the set of candidate subchannels (the set of candidate resources) includes 20 subchannels.
In some examples, the frequency domain resource allocation 406 includes 4 RB sets (e.g., the RB sets 405) and the set of candidate subchannels in the frequency domain resource allocation 406 includes 20 subchannels (e.g., across the 4 RB sets) . That is, based on resource pool configuration, L1 may determine that each RB set 405 includes 5 candidate subchannels (e.g., a candidate subchannel indexed at position 0, a candidate subchannel indexed at position 1, a candidate subchannel indexed at position 2, a candidate subchannel indexed at position 3, and a candidate subchannel indexed at position 4) and, therefore, the set of candidate subchannels in the frequency domain resource allocation 406 includes 20 subchannels.
In some examples, L1 may determine that one or more of the candidate subchannels included in the set of candidate subchannels may be unavailable. For example (e.g., based on the resource identification procedure) , L1 may determine that subchannels indexed at position 0 (e.g., a subchannel 410, a subchannel 412, a subchannel 414, a subchannel 416) are available. Additionally, or alternatively, L1 may determine that a subchannel indexed at position 2 in the RB set 405-a (e.g., a subchannel 411) , a subchannel indexed at position 4 in the RB set 405-b (e.g., a subchannel 413) , a subchannel indexed at position 4 in the RB set 405-c (e.g., a subchannel 415) , and a subchannel indexed at position 3 in the RB set 405-d (e.g., a subchannel 417) are unavailable (e.g., are unavailable subchannels 445) . Although the example of FIG. 4 illustrates a single available subchannel 440 in the RB sets 405 (e.g., in each of the RB set 405) , the RB sets 405 may include multiple available subchannels. For example, a subchannel 418 in the RB set 405-d may also be an available subchannel. That is, in some examples, the RB sets 405 may include 4 available subchannels (e.g., 4 interlaces) and 1 unavailable subchannel. In such examples, L1 may determine that a quantity of candidate subchannels available for the interlace RB-based communication is 16. That is, L1 may determine (e.g., and report) that a set of available resources includes 16 subchannels. In other words, L1 may report (e.g., transmit an indication of) a set of available subchannels (e.g., one or more available subchannels) that identifies the set of available resources, and each available subchannel of the set of available subchannels may be associated with a respective RB set included in the frequency domain resource allocation 406 (e.g., one of the RB sets 405) . For example, because the subchannel indexed at position 2 in the RB set 405-a (e.g., a subchannel 411) , the subchannel indexed at position 4 in the RB set 405-b (e.g., a subchannel 413) , the subchannel indexed at position 4 in the RB set 405-c (e.g., a subchannel 415) , and the subchannel indexed at position 3 (e.g., a subchannel 417) are unavailable, L1 may determine that the frequency domain resource allocation 406 may include 16 available subchannels and, therefore, the set of available resources includes 16 subchannels. In such an example, each of the 16 subchannels may occur within a respective RB set 405. For example, the set of available subchannels may include the subchannel indexed at position 0 in the RB set 405-a (e.g., the subchannel 410) . In such examples, the higher layer (e.g., the MAC layer) may select a quantity of RB sets and a quantity of subchannels (e.g., per RB set) based on the reported set of available subchannels. That is, the higher layer may determine a value of Y _RBset and a value of X _i from the set of available subchannels reported by L1.
In some other examples, the frequency domain granularity may be determined for a single-slot resource. For example, L1 may report candidate single-slot resources (e.g., a set of available single-slot resources) to the higher layer in which a candidate single-slot resource (e.g., included in the set of candidate single-slot resources) may be defined using one or more parameters. That is, the set of candidate resources may include a set of candidate single-slot resources. Accordingly, L1 may perform the resource selection and report the set of available resource using a frequency domain granularity of a single-slot resources, such that the set of available resources includes a set of available single-slot resources. In some examples, a candidate single-slot resource may be defined as (e.g., may include) a set of L _subCH subchannels (e.g., L _subCH contiguous or non-contiguous subchannels) . For example, the candidate single-slot resource may include a set of L _subCH subchannels across one or multiple RB sets with subchannels in slot In such an example, j _l≠j _k if l≠k and may denote a quantity of subchannels that may be used for sidelink communication (e.g., a PSSCH transmission or a PSCCH transmission) in a sidelink resource pool (e.g., the frequency domain resource allocation 406) . Additionally, may denote a slot that belongs to the sidelink resource pool (e.g., a slot that belongs to the set of candidate single-slot resources, such as the slot 430) . That is, L1 may identify (e.g., and report to the higher layer) a quantity of available single-slot resources (e.g., the set of available resources) and the higher layer (e.g., the MAC layer) may select a quantity of RB sets and a quantity of subchannels (e.g., per RB set) based on the reported candidate single-slot resources (e.g., the set of available single-slot resources) . That is, the higher layer may determine a value of Y _RBset and a value of X _i from the set of available single-slot resources reported by L1.
In the example of FIG. 4, the higher layer may indicate to L1 (or L1 may otherwise determine, such as based on a rule) that the quantity of L _subCH subchannels across the RB sets 405 (e.g., across all RB sets) is 2. For example, the higher layer may indicate that a value of L _subCH is 2. That is, the higher layer may indicate, to L1, that an interlace RB-based sidelink communication may occupy 2 subchannels. In such examples, based on the value of L _subCH, L1 may identify a set of candidate single-slot resources, in which a candidate single-slot resource may include 2 subchannels (e.g., 2 contiguous or non-contiguous subchannels) . In the example of FIG. 4, the quantity of subchannels across the RB sets 405 may be 20 subchannels. Accordingly, L1 may determine that the set of candidate single-slot resources (e.g., a total quantity of candidate single-slot resources) across the RB sets 405 may be 190 candidate single-slot resources. That is, for a set n and a subset size r, a quantity of combinations (C) may be determined in accordance with the following Equation 2:
In the example of FIG. 4, the set (n) is the quantity of subchannels across the RB sets 405, the subset size (r) is the quantity of subchannels (L _subCH) , and the quantity of combinations is the set of candidate single-slot resources. Thus, for the set of candidate resources that includes 20 subchannels (e.g., for n=20) , a set of 190 candidate single-slot resources that each include two subchannels (e.g., r=2) may be obtained from the set of candidate resources In some examples, L1 may determine (e.g., and report) a set of available candidate single-slot resources from the set of candidate single-slot resources (e.g., the set of 190 candidate single-slot resources) . For example, L1 may determine that the set of candidate resources includes 16 available subchannels. That is, L1 may determine that the set of available resources includes 16 subchannels. Additionally, L1 may determine that a set of 120 available single-slot resources that each include two subchannels may be obtained from the set of available resources In other words, L1 may report (e.g., transmit an indication of) one or more available single-slot resources that identifies the set of available resources and each single-slot resource of the one or more available single-slot resources may be associated with one or more respective RB sets included in the frequency domain resource allocation 406 (e.g., one of the RB sets 405) . For example, an available single-slot resource may include subchannel 410 from the RB set 405-a and subchannel 418 from the RB set 405-d. In such examples, the higher layer (e.g., the MAC layer) may select a quantity of RB sets and a quantity of subchannels (e.g., per RB set) based on the reported candidate single-slot resources (e.g., the set of available single-slot resources) . That is, the higher layer may determine a value of Y _RBset and a value of X _i from the set of available single-slot resources reported from L1.
In some examples, L1 may report candidate single-slot resources to the higher layer, in which a candidate single-slot resource may be a candidate single-slot resource set. For example, a candidate single-slot resource may be defined as (e.g., may include) Y _RBset candidate single-slot single-RB set resources in Y _RBset contiguous resource sets in slot In such an example, a candidate single-slot single-RB set resource (e.g., a candidate single-slot resource set) may be defined as a set of X _i subchannels with subchannels in which j _l≠j _k if l≠k and may denote a slot that belongs to the sidelink resource pool (e.g., that belongs to the set of candidate single-slot resource sets, such as the slot 430) . That is, within each RB set of Y _RBset contiguous RB sets, a candidate single-slot resource set may include multiple subchannels (e.g., X _i contiguous or non-contiguous subchannels) .
In some examples, a candidate single-slot resource set (e.g., a candidate singe-slot single-RB set resource) may be define as X _i (i=1, 2, …, Y _RBset) subchannels with contiguous subchannel indices in an RB set (e.g., in each RB set of Y _RBset contiguous RB sets) . That is, a candidate single-slot resource set within each ith RB set may include X _i contiguous subchannels. In some other examples, a candidate single-slot resource set may be define as X _i (i=1, 2, …, Y _RBset) subchannels with contiguous or non-contiguous subchannel indices (e.g., any X _i subchannels in an RB set) . That is, X _i subchannels in an RB set may be associated with contiguous subchannel indices or non-contiguous subchannel indices. In other words, a candidate single-slot resource set within each ith RB set may include X _i contiguous or non-contiguous subchannels. For X _i subchannels with non-contiguous subchannel indices, the candidate single-slot resource set may include multiple (e.g., any) non-contiguous subchannel indices. Additionally, or alternatively, for X _i subchannels with non-contiguous subchannel indices, the candidate single-slot resource set may include a subset of subchannel indices (e.g., a subset of predefined subchannel indices) . That is, the UE may be configured (or preconfigured) with a set of subchannel indices.
In some examples, L1 may select a set of available single-slot resource sets from the set of candidate single-slot resource sets. For example, L1 may select the set of available single-slot resource sets for an RB set combination in which an RB set combination may include Y _RBset contiguous RB sets (e.g., contiguous in the frequency domain) . In some examples, each subchannel of the X _i subchannels included in each RB set (e.g., of the Y _RBset contiguous RB sets) may correspond to a respective subchannel index that is common to the quantity of contiguous RB sets. For example, one or more interlace indices used at L1 across multiple (e.g., different) RB sets may be the same. In such an example, the candidate single-slot resources (e.g., for an RB set combination) may include candidate single-slot single-RB set resources (e.g., a candidate single-slot resource set) in each RB set of the RB set combination associated with the same subchannel indices. In other words, a candidate single-slot resource set associated with an RB set includes candidate single-slot resources within the RB set (e.g., a single RB set) . That is, a candidate single-slot resource set associated with an RB set includes candidate single-slot single-RB set resources within the RB set.
In some examples, the higher layer may indicate to L1 (or L1 may otherwise determine, such as based on a rule) that Y _RBset has a value of 2. That is, the higher layer may indicate that each RB set combination includes 2 contiguous RB sets. In other words, each Y _RBset contiguous RB sets included in the frequency domain resource allocation 406 may be referred to as an RB set combination. In other words, an RB set combination includes Y _RBset contiguous RB sets of the RB sets included in the frequency domain resource allocation 406. As illustrated in the example of FIG. 4, if the value of Y _RBset is 2 (e.g., if each Y _RBset contiguous RB set includes 2 contiguous RB sets from the frequency domain resource allocation 406) L1 may use three RB set combinations (e.g., three Y _RBset contiguous RB sets) from the frequency domain resource allocation 406. In some examples, the RB set combinations may include a first RB set combination corresponding to the RB set 405-a and the RB set 405-b, a second RB set combination corresponding to the RB set 405-b and the RB set 405-c, and a third RB set combination corresponding to the RB set 405-c and the RB set 405-d. In such an example, if a same one or more interlaces (e.g., a same one or more interlace indices) are used across the RB sets 405, the higher layer may provide L1 with a same quantity of subchannels (X _i) for each RB set included in each RB set combination. For example, the higher layer may indicate to L1 (or L1 may otherwise determine, such as based on a rule) that each RB set of each RB set combination includes one subchannel (e.g., X _i=X=1) . In such an example, a candidate single-slot resource set (e.g., a quantity of single-slot resources) per RB set combination may include 5 candidate single-slot resources In some examples, L1 may determine and report a set of available single-slot resources (e.g., an available single-slot resource set) for each RB set combination. In such examples, if a subchannel is unavailable for one RB set included in an RB set combination, the subchannel may be unavailable for both RB sets included in the RB set combination. For example, the subchannel 411 and the subchannel 413 (which occupy interlace indices 2 and 4, respectively) may be unavailable for the first RB set combination (e.g., including the RB set 405-a and the RB set 405-b) . Accordingly, L1 may determine that an available single-slot resource set for the first RB set combination includes three single-slot resources For example, an available single-slot resource set for the first RB set combination may include the subchannel 410 (e.g., an interlace with an index of 0 in the RB set 405-a) and subchannel 412 (e.g., an interlace with an index of 0 in the RB set 405-b) . Additionally, or alternatively, the subchannel 413 and the subchannel 415 (which both occupy an interlace index of 4) may be unavailable for the second RB set combination (e.g., including the RB set 405-b and the RB set 405-c) . Accordingly, L1 may determine that an available single-slot resource set for the second RB set combination includes 4 single-slot resources In some examples, the subchannel 415 and the subchannel 417 (which occupy interlace indices 4 and 3, respectively) may be unavailable for the third RB set combination (e.g., including the RB set 405-c and the RB set 405-d) . Accordingly, L1 may determine that an available single-slot resource set for the third RB set combination includes 3 single-slot resources
In some other examples, one or more interlace indices used at L1 across multiple (e.g., different) RB sets may be different. In such an example, the candidate single-slot resources (e.g., for an RB set combination) may include a combination of the single-slot single-RB set resources (e.g., a candidate single-slot resource set) in each RB set of the RB set combination. As illustrated in the example of FIG. 4, the higher layer may indicate to L1 (or L1 may otherwise determine, such as based on a rule) that a first RB set of each RB set combination includes one subchannel (e.g., X ₀=1) and a second RB set of each RB set combination includes one subchannel (e.g., X ₁=1) . In such an example, a candidate single-slot resource set (e.g., a quantity of single-slot resources) per RB set may include 5 candidate single-slot resources and a candidate single-slot resource set (e.g., a quantity of single-slot resources) per RB set combination may include 25 candidate single-slot resources In some examples, L1 may determine and report a set of available single-slot resources (e.g., an available single-slot resource set) for each RB set combination. For example, because the RB sets 405 include one unavailable subchannel (e.g., because each of the RB sets 405 include one unavailable subchannel) , L1 may determine that an available single-slot resource set (e.g., a quantity of single-slot resources) per RB set may include 4 available single-slot resources and an available single-slot resource set for each RB set combination includes 16 available single-slot resources For example, an available single-slot resource set for the third RB set combination may include the subchannel 414 (e.g., an interlace with an index of 0 in the RB set 405-c) and subchannel 418 (e.g., an interlace with an index of 4 in the RB set 405-d) . In some examples, if a subchannel includes an interlace (e.g., if a value of K is 1) , an index of the subchannel may correspond to an index of the interlace.
FIG. 5 illustrates an example of an RB set configuration 500 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The RB set configuration 500 may implement or be implemented at one or more aspects of the wireless communications system 100, the network architecture 200, the wireless communications system 300, and the RB set configuration 400. For example, the RB set configuration 500 may be implemented at a UE, which may be an example of a UE illustrated by and described with reference to FIGs. 1 through 4. The RB set configuration 500 may include one or more RB sets 505 (e.g., an RB set 505-a, an RB set 505-b, an RB set 505-c, and an RB set 505-d) , which may be examples of an RB set illustrated by and described with reference to FIGs. 3 and 4. For example, the RB sets 505 may include one or more available subchannels 540 (e.g., a subchannel 510) and one or more unavailable subchannels 545 (e.g., a subchannel 511) . Although the example of FIG. 5 illustrates a single available subchannel 540 in each RB set 505, each RB set 505 may include multiple available subchannels. For example, a subchannel 512 in the RB set 505-a may also be an available subchannel. In some examples, a guard band 525 may occur between two of the RB sets 505. In the example of FIG. 5, each RB set 505 may include 5 subchannels (e.g., a subchannel indexed at position 0, a subchannel indexed at position 1, a subchannel indexed at position 2, a subchannel indexed at position 3, and a subchannel indexed at position 4) .
In some examples, the UE may support single-slot L1 resource selection for interlace RB-based sidelink communications. For example, the UE may be configured with a frequency domain resource allocation 506 for a slot 530 that includes the RB set 505-a (e.g., RB set 0) , the RB set 505-b (e.g., RB set 1) , the RB set 505-c (e.g., an RB set 2) , and the RB set 505-d (e.g., an RB set 3) . In such an example, a higher layer (e.g., a MAC layer) of a protocol stack supported at the UE may trigger a lower layer of the protocol stack (e.g., L1) to report a set of available single-slot resources and may provide L1 with one or more parameters for the identifying the set of available single-slot resources. For example, the higher layer may provide L1 with a quantity of subchannels (L _subCH) across the RB sets 505 (e.g., across all RB sets included in a frequency domain resource allocation 506) . In some examples, L1 may determine a quantity of RB sets (Y _RBset) and a quantity of subchannels (X _i) for each ith RB set of the Y _RBset RB sets (e.g., i=0, 1, …, Y _RBset) based on the indicated quantity of subchannels. In some examples, the higher layer (e.g., the MAC layer) may provide L1 with a parameter that defines the quantity of subchannels across multiple RB sets (e.g., may provide L1 with a value of L _subCH) , for example in response to L1 resource selection being triggered. In such examples, L1 may determine the quantity of RB sets (Y _RBset) and the quantity of subchannels for each RB set (X _i) .
In some examples (e.g., after a resource exclusion procedure) , L1 may calculate a proportion of available single-slot resources for a pair (e.g., any pair) of (Y _RBset, X _i) , in which i=0, 1, …, Y _RBset-1. That is, L1 may determine a respective proportion of candidate single-slot resources in each set of candidate single-slot resources corresponding to a (Y _RBset, X _i) pair that may be available for an interlace RB-based sidelink communication. In other words, L1 may determine a proportion of available single-slot resources associated with each RB set 505 included in the frequency domain resource allocation 506 (e.g., based on the resource exclusion procedure) . In some examples, L1 may select one or more pairs of (Y _RBset, X _i) . For example, L1 may select one or more pairs of (Y _RBset, X _i) that correspond to one or more relatively large proportions of the available single-slot resources (e.g., a first largest portion, a first largest portion and a second largest portion) . That is, L1 may select sets of available single-slot resources which may correspond to a relatively large portion of the set of candidate single-slot resources from which the set of available single-slot resources may be selected.
In some examples, a summation of the quantity of subchannels in the quantity (Y _RBset) of RB sets may be determined in accordance with the following Equation 3:
That is, the quantity of subchannels in the quantity (Y _RBset) of RB sets may equal the indicated quantity of subchannels across the RB sets 505. In some examples, one or more interlace indices used at L1 in multiple (e.g., different) RB sets may be the same For example, the higher layer may indicate to L1 (or L1 may otherwise determine) that the quantity of subchannels is 2 (e.g., L _subCH=2) . In such an example, possible (Y _RBset, X _i) pairs may include (Y _RBset=1, X ₁=2) or (Y _RBset=2, X ₁=X ₂=1) . In some examples, L1 may calculate a first proportion p1 for the pair (Y _RBset=1, X ₁=2) and a second proportion p2 for the pair (Y _RBset=2, X ₁=X ₂=1) . Additionally, in some examples, L1 may select the pair (Y _RBset=1, X ₁=2) to report the candidate resources (e.g., candidate single-slot resources) if p1>p2. That is, if a value of p1 is greater than a value of p2, L1 may report a set of available resources selected from a set of candidate resources corresponding to the pair (Y _RBset=1, X ₁=2) . Additionally, or alternatively, L1 may select the pair (Y _RBset=2, X ₁=X ₂=1) to report the candidate resources if p1<p2. That is, if a value of p1 is less than a value of p2, L1 may report a set of available resources selected from a set of candidate resources corresponding to the pair (Y _RBset=2, X ₁=X ₂=1) . In some examples, if p1=p2, L1 may select a (Y _RBset, X _i) pair associated with a smaller value of Y _RBset or may randomly select a (Y _RBset, X _i) pair to report the candidate resources.
For the pair (Y _RBset=1, X=2) , a candidate resource (e.g., a candidate single-slot resource) may include two subchannels within a single RB set. As illustrated in the example of FIG. 5, the frequency domain resource allocation 506 may include 4 RB sets (e.g., the RB sets 505) and each RB set 505 may include 5 subchannels. Accordingly, a quantity of candidate resource (M _Total) across the RB sets 505 for the pair (Y _RBset=1, X=2) may be 40 In some examples, L1 may determine that the RB set 505-a includes 4 available subchannels, the RB set 505-b includes 3 available subchannels, the RB set 505-c includes 4 available subchannels, and the RB set 505-d includes 2 available subchannels. In such examples, a quantity of available resources (M _available) across the RB sets 505 for the pair (Y _RBset=1, X=2) may be 16 Additionally, or alternatively, L1 may determine that the proportion example, p1 is 0.40 In some examples, for the pair (Y _RBset=2, X=1) , a candidate resource may include a subchannel within two RB sets (e.g., two contiguous RB sets) . As illustrated in the example of FIG. 5, the resource allocation may include four RB sets (e.g., the RB sets 505) and three RB set combinations (e.g., three sets of two contiguous RB sets) . For example, the RB set combinations may include a first RB set combination corresponding to the RB set 505-a and the RB set 505-b, a second RB set combination corresponding to the RB set 505-b and the RB set 505-c, and a third RB set combination corresponding to the RB set 505-c and the RB set 505-d. In such an example, a quantity of candidate resources (M _Total) across the RB set combinations for the pair (Y _RBset=2, X=1) may be 15 In some examples, L1 may determine that the first RB set combination includes 3 available subchannels, the second RB set combination includes 3 available subchannels, and the third RB set combination includes 1 available subchannel. In such examples, a quantity of available resources (M _available) across the RB set combinations for the pair (Y _RBset=2, X=1) may be 7 Additionally, or alternatively, L1 may determine that the proportion example, p2 is 0.47 Accordingly, L1 may determine that a value of p2 is great than a value of p1 (e.g., p2>p1) and may determine to select the pair (Y _RBset=2, X=1) to report candidate resources.
In some other examples (e.g., after the resource exclusion procedure) , L1 may identify a quantity (e.g., a maximum quantity or an otherwise suitable quantity) of available subchannels across the RB sets 505 (e.g., across all RB sets included in the frequency domain resource allocation 506) and may determine a quantity of subchannels per RB set (X) as a value (e.g., a minimum value or an otherwise suitable value) between L _subCH and For example, the higher layer may indicate to L1 (or L1 may otherwise determine) that the quantity of subchannels is 2 (e.g., L _subCH=2) . As illustrated in the example of FIG. 5, a quantity of available subchannels for the RB set 505-a (e.g., RB set 0) may be 4 aquantity of available subchannels for the RB set 505-b (e.g., RB set 1) may be 3 a quantity of available subchannels for the RB set 505-c (e.g., RB set 2) may be 4 and a quantity of available subchannels for the RB set 505-d (e.g., RB set 3) may be 2 Accordingly, the quantity of available subchannels across the RB sets 505 may be determined in accordance with the following Equation 4:
and the quantity of subchannels per RB set (e.g., X) may be determined in accordance with the following Equation 5:
In some examples (e.g., to reduce or minimize the quantity of RB sets used for a single-slot resource) , L1 may determine a quantity of RB sets (e.g., Y _RBset) in accordance with the following Equation 5:
Y _RBset=L _subCH/X=1. (6 )
In such examples, L1 may select (Y _RBset=1, X=2) to report candidate resources to the higher layer. Although the example of FIG. 5 considers one slot (e.g., the slot 530) , each slot in a resource selection window may be considered for calculating the proportion of available candidate resources. In other words, the resource identification procedure, which includes resource selection, may be performed over a set of slots within a resource selection window to identify available resources for the interlaced RB-based transmission.
FIG. 6 illustrates an example of an RB set configuration 600 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The RB set configuration 600 may implement or be implemented at one or more aspects of the wireless communications system 100, the network architecture 200, the wireless communications system 300, the RB set configuration 400, and the RB set configuration 500. For example, the RB set configuration 600 may be implemented at a UE, which may be an example of a UE illustrated by and described with reference to FIGs. 1 through 5. The RB set configuration 600 may include a frequency domain resource allocation 606 that includes one or more RB sets 605 (e.g., an RB set 605-a, an RB set 605-b, an RB set 605-c, and an RB set 605-d) , which may be examples of an RB set illustrated by and described with reference to FIGs. 3 through 5. In the example of FIG. 6, each RB set 605 may include 5 subchannels (e.g., a subchannel indexed at position 0, a subchannel indexed at position 1, a subchannel indexed at position 2, a subchannel indexed at position 3, and a subchannel indexed at position 4) .
In some examples, in a slot 630-a, the RB sets 605 may include one or more available subchannels 640 (e.g., a subchannel 610) and one or more unavailable subchannels 645 (e.g., a subchannel 611) . Additionally, in a slot 630-a, the RB sets 605 may include one or more available subchannels 640 (e.g., a subchannel 612) and one or more unavailable subchannels 645 (e.g., a subchannel 613) . In some examples, for a same RB set, subchannels that are available (or unavailable) during the slot 630-a may not be available (or unavailable) during the slot 630-b. For example, a subchannel indexed at position 2 in the RB set 605-b may be available during the slot 630-a and unavailable during the slot 630-b. Additionally, subchannels indexed at positions 1 and 2 in the RB set 605-d may be available during the slot 630-a and unavailable during the slot 630-b. Although the example of FIG. 6, illustrates a single available subchannel 640 in each RB set 605 in each slot 630, each RB set 605 may include multiple available subchannels. For example, a subchannel 614 in the RB set 605-b in slot 630-b may also be an available subchannel. In some examples, a guard band 625 may occur between two of the RB sets 605.
In some examples, the UE may support multi-slot L1 resource selection for interlace RB-based sidelink communications. For example, the UE may support MCSt with interlace RB-based transmission. In such an example, the UE may be configured with multiple consecutive slots. Although the example of FIG. 6 illustrates two consecutive slots, the UE may be configured with 3 or 4 (or more) consecutive slots for the MCSt. In other words, the resource identification procedure, which includes the L1 resource selection, may be performed over a set of slots within a resource selection window to identify available resources for the MCSt with interlace RB-based transmission. In such an example, a higher layer (e.g., a MAC layer) of a protocol stack at the UE may trigger a lower layer (e.g., L1) of the protocol stack to report a subset of candidate resources (e.g., a set of available resources) and may provide L1 with one or more sets of parameters for selecting the set of available resources. In some examples, the higher layer may provide L1 with a single set of parameters for the MCSt. For example, the higher layer may provide L1 with a quantity of subchannels (L _subCH) across the RB sets 605 (e.g., all RB sets included in the frequency domain resource allocation 606) . That is, the frequency domain resource allocation 606 may include the RB set 605-a (e.g., RB set 0) , the RB set 605-b (e.g., RB set 1) , the RB set 605-c (e.g., an RB set 2) , and the RB set 605-d (e.g., an RB set 3) . In such an example, the UE may apply the quantity of subchannels (L _subCH) for each slot of the MCSt (e.g., the slot 630-a and the slot 630-b) . Additionally, or alternatively, the higher layer may provide L1 with a quantity of RB sets (Y _RBset) and a quantity of subchannels per RB set (X _i, i=0,1, …, Y _RBset-1) . In such an example, the UE may apply the quantity of RB sets (Y _RBset) and the quantity of subchannels per RB set (X _i) for each slot of the MCSt (e.g., the slot 630-a and the slot 630-b) .
In some other examples, the higher layer may provide L1 with multiple sets of parameters for the MCSt. For example, the higher layer may provide L1 with a first set of parameters for slot 630-a and a second set of parameters for slot 630-b. In some examples, each set of parameters may include a quantity of subchannels (L _subCH) across the RB sets 605 (e.g., all RB sets included in the frequency domain resource allocation 606) . For example, the first set of parameters may include a parameter which indicates a quantity of subchannels (L _subCH, 1) across the RB sets 605 included in the slot 630-a. Additionally, the second set of parameters may include a parameter which indicates a quantity of subchannels (L _subCH, 2) across the RB sets 605 included in the slot 630-b.
In some other examples, each set of parameters may include a quantity of RB sets (Y _RBset) and a quantity of subchannels per RB set (X _i) . In such an example, the first set of parameters may include one or more parameters that indicate a quantity of RB sets (Y _RBset, 1) for the slot 630-a and a quantity of subchannels per RB set (X ₁) for the slot 630-a. Additionally, or alternatively, the second set of parameters may include one or more parameters that indicate a quantity of RB sets (Y _RBset, 2) for the slot 630-b and a quantity of subchannels per RB set (X ₂) for the slot 630-b.
In some examples, L1 may report a subset of candidate resources for interlace RB-based transmission to the higher layer. For example, L1 may report candidate single-slot resources or candidate multi-slot resources to the higher layer. In some examples, for a single-slot resource report, L1 may report candidate single-slot resources in which a candidate single-slot resource may be defined in accordance with one or more parameters. For example, a candidate single-slot resource may include a candidate subchannel that may include K interlaces. Additionally, or alternatively, a candidate single-slot resource may include a quantity (L _subCH) of contiguous subchannels or non-contiguous subchannels, or both, within each of the RB sets 605 or across multiple of the RB sets 605.
In some other examples, for a multi-slot resource report, a candidate multi-slot resource may include a set of single-slot resources that are consecutive in the time domain. For example, the higher layer may indicate to L1 (or L1 may otherwise determine) that, for slot 630-a (e.g., slot 0) the quantity of RB sets is 2 and the quantity of subchannels per RB set is 1 (e.g., Y _RBset, 1=2, X ₁=1 ) . Additionally, the higher layer may indicate to L1 (or L1 may otherwise determine) that, for slot 630-b (e.g., slot 1) the quantity of RB sets is 2 and the quantity of subchannels per RB set is 1 (e.g., Y _RBset, 2=2, X ₂=1 ) . That is, for the slot 630-a and the slot 630-b, an RB set combination may include two consecutive RB sets (e.g., for Y _RBset, 1=Y _RBset, 2=2) and the frequency domain resource allocation 606 for the slot 630-a and the slot 630-b may include three RB set combinations (e.g., three sets of two contiguous RB sets) . For example, the RB set combinations may include a first RB set combination corresponding to the RB set 605-a (e.g., RB set 0) and the RB set 605-b (e.g., RB set 1) , a second RB set combination corresponding to the RB set 605-b (e.g., RB set 1) and the RB set 605-c (e.g., RB set 2) , and a third RB set combination corresponding to the RB set 605-c (e.g., RB set 2) and the RB set 605-d (e.g., RB set 3) .
In some examples, L1 may determine a quantity of candidate resources and a quantity of available resources for the RB set combinations (e.g., the first RB set combination, the second RB set combination, and the third RB set combination) in the slot 630-a (e.g., slot 0) and slot 630-b (e.g., slot 1) . For instance, the determined quantity of candidate resources and the determined quantity of available resources for the RB set combinations in the slot 630-a (e.g., slot 0) and slot 630-b (e.g., slot 1) may be illustrated in the following Table 1:
In some examples, for a multi-slot resource report, a candidate multi-slot resource may include a set of single-slot resources that may consecutive the time domain. In such an example, in the frequency domain, a single-slot resource in a slot may include Y _RBset candidate single-slot resources per RB set in Y _RBset contiguous RB sets. For example, a quantity of candidate resource across the RB set combinations for the slot 630-a is 15 and a quantity of candidate resource across the RB set combinations for the slot 630-b is also 15 Accordingly, a quantity of candidate resource (M _total) across the RB sets for slot 630-a and slot 630-b is 225 Additionally, or alternatively, L1 may determine that a quantity of available resources across the RB set combinations for the slot 630-a is 10 and a quantity of available resources across the RB set combinations for the slot 630-b is 7 Accordingly, a quantity of available resources (M _available) across the RB sets for slot 630-a and slot 630-b is 70
In some other examples, a candidate multi-slot resource may include a set of single-slot resources that may be consecutive in the time domain and belong to a same one or more RB sets. In such an example, in the frequency domain, a candidate single-slot resource in a slot may include of Y _RBset single-slot resources per RB set in Y _RBset contiguous RB sets. For example, a quantity of candidate resource across the slots 630 for the first RB set combination, the second RB set combination, and the third RB set combination is 25 Accordingly, a quantity of candidate resource (M _total) across the slots 630 for the RB set combinations is 75 Additionally, or alternatively, L1 may determine that a quantity of available resources across the slots 630 for the first RB set combination is 9 a quantity of available resources across the slots 630 for the second RB set combination is 12 and a quantity of available resources across the slots 630 for the third RB set combination is 3 Accordingly, a quantity of available resources (M _available) across the RB sets for slot 630-a and slot 630-b is 24
FIG. 7 illustrates an example of a process flow 700 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The process flow 700 may implement or be implemented at one or more aspects of the wireless communications system 100, the network architecture 200, the wireless communications system 300, the RB set configuration 400, the RB set configuration 500, and the RB set configuration 600. For example, the process flow 700 may include example operations associated with a UE 715-a and a UE 715-b, which may be examples of a UE as described with reference to FIGs. 1 through 6. The operations performed at the UEs 715 may support improvements to communications between the UEs 715, among other benefits. In the following description of the process flow 700, the operations performed at the UEs 715 may occur in a different order than the example order shown. Additionally, the operations performed at the UEs 715 may be performed at different times. Some operations may be combined and some operations may be omitted.
At 720, a lower layer 714 (e.g., L1) of a protocol stack at the UE 715-a may receive (e.g., from a higher layer 713 of the protocol stack, such as a MAC layer) an indication of at least one parameter to be used at the UE 715-a for selection of resources for interlace RB-based communications. In some examples, the at least one parameter may indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. For example, the at least one parameter may include L _subCH, which may indicate a quantity of subchannels across multiple (e.g., all) RB sets included in the frequency domain resource allocation. Additionally, or alternatively, the at least one parameter may include Y _RBset, which may indicate a quantity of RB sets, X _i, which may indicate a quantity of subchannels per RB set, or both. In some examples, the at least one parameter may include a frequency domain resource indicator, which may identify a (Y _RBset, X _i) pair. In some examples, the lower layer 714 may use one or more techniques illustrated by and described with reference to FIGs. 4–6 to determine the RB set assignment, the subchannel assignment, or both, based on the one or more parameters. For example, in response to receiving the parameter L _subCH, the lower layer 714 may use a value of the parameter L _subCH and a quantity of RB sets included in the frequency domain resource allocation to determine the RB set assignment and the subchannel assignment.
At 725, the lower layer 714 may perform a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication (e.g., an interlace RB-based PSSCH transmission or an interlace RB-based PSCCH transmission) . In such an example, the set of candidate resources may be based on the RB set assignment, the subchannel assignment, or both. For example, the lower layer 714 may use one or more techniques illustrated by and described with reference to FIGs. 4–6 to identify the set of candidate resources (e.g., to be evaluated for availability for the interlace RB-based sidelink communication) based on the RB set assignment, the subchannel assignment, or both. In some examples, the set of candidate resources may include candidate subchannels, candidate single-slot resources, or candidate multi-slot resources, as described throughout the present disclosure, including with reference to FIGs. 4–6. Additionally, in some examples, the resource identification procedure may be an example of a resource identification procedure as described throughout the present disclosure, including with reference to FIGs. 3–6. For example, the resource identification procedure may include a resource selection procedure and a resource exclusion procedure.
In some examples, at 730, the lower layer 714 may transmit (e.g., to the higher layer 713) a report that indicates the set of available resources. In some examples, the set of available resources may include a set of available subchannels, a set of available single-slot resources, a set of available multi-slot resources, or an available single-slot resource set (e.g., a set of available single-slot single-RB resources) as described throughout the present disclosure, including with reference to FIGs. 4–6.
In some examples, at 735, the lower layer 714 may receive (e.g., from the higher layer 713) scheduling information for the interlace RB-based sidelink communication based on the report. In such examples, the scheduling information may identifies the one or more resources used for transmitting the interlace RB-based sidelink communication.
At 740, the lower layer 714 may transmit the interlace RB-based sidelink communication to the UE 715-b using one or more resources of the set of available resources. In some examples, the interlace RB-based sidelink communication may include an interlace RB-based PSSCH transmission or an interlace RB-based PSCCH transmission as described throughout the present disclosure, including with reference to FIGs 3–6.
FIG. 8 illustrates a block diagram 800 of a device 805 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to resource selection for interlace RB-based transmissions) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to resource selection for interlace RB-based transmissions) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
The communications manager 820, the receiver 810, the transmitter 815, or various combinations thereof or various components thereof may be examples of means for performing various aspects of resource selection for interlace RB-based transmissions as described herein. For example, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
In some examples, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory) .
Additionally, or alternatively, in some examples, the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure) .
In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
The communications manager 820 may support wireless communication at a UE (e.g., the device 805) in accordance with examples as disclosed herein. For example, the communications manager 820 may be configured as or otherwise support a means for receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The communications manager 820 may be configured as or otherwise support a means for performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The communications manager 820 may be configured as or otherwise support a means for transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 (e.g., a processor controlling or otherwise coupled with the receiver 810, the transmitter 815, the communications manager 820, or a combination thereof) may support techniques for more efficient utilization of communication resources.
FIG. 9 illustrates a block diagram 900 of a device 905 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a device 805 or a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
The receiver 910 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to resource selection for interlace RB-based transmissions) . Information may be passed on to other components of the device 905. The receiver 910 may utilize a single antenna or a set of multiple antennas.
The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to resource selection for interlace RB-based transmissions) . In some examples, the transmitter 915 may be co-located with a receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.
The device 905, or various components thereof, may be an example of means for performing various aspects of resource selection for interlace RB-based transmissions as described herein. For example, the communications manager 920 may include a parameter indication component 925, a resource identification component 930, an interlace component 935, or any combination thereof. The communications manager 920 may be an example of aspects of a communications manager 820 as described herein. In some examples, the communications manager 920, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
The communications manager 920 may support wireless communication at a UE (e.g., the device 905) in accordance with examples as disclosed herein. The parameter indication component 925 may be configured as or otherwise support a means for receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The resource identification component 930 may be configured as or otherwise support a means for performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The interlace component 935 may be configured as or otherwise support a means for transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
FIG. 10 illustrates a block diagram 1000 of a communications manager 1020 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The communications manager 1020 may be an example of aspects of a communications manager 820, a communications manager 920, or both, as described herein. The communications manager 1020, or various components thereof, may be an example of means for performing various aspects of resource selection for interlace RB-based transmissions as described herein. For example, the communications manager 1020 may include a parameter indication component 1025, a resource identification component 1030, an interlace component 1035, an available resource component 1040, a scheduling component 1045, an available single-slot resource component 1050, an available subchannel component 1055, or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
The communications manager 1020 may support wireless communication at a UE in accordance with examples as disclosed herein. The parameter indication component 1025 may be configured as or otherwise support a means for receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The resource identification component 1030 may be configured as or otherwise support a means for performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The interlace component 1035 may be configured as or otherwise support a means for transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
In some examples, to support receiving the indication, the parameter indication component 1025 may be configured as or otherwise support a means for receiving the indication of the at least one parameter that identifies a quantity of subchannels associated with each RB set included in the frequency domain resource allocation, where the quantity of subchannels indicates the subchannel assignment and the RB set assignment for the frequency domain resource allocation.
In some examples, to support receiving the indication, the parameter indication component 1025 may be configured as or otherwise support a means for receiving the indication of the at least one parameter that identifies a quantity of RB sets and one or more quantities of subchannels associated with the quantity of RB sets, where the quantity of RB sets identifies the RB set assignment and the one or more quantities of subchannels identifies the subchannel assignment.
In some examples, the one or more quantities of subchannels is a single quantity of subchannels common to each RB set of the quantity of RB sets. In some examples, the one or more quantities of subchannels is a set of multiple quantities of subchannels. In some examples, each quantity of subchannels of the set of multiple quantities of subchannels is associated with a respective RB set of the quantity of RB sets.
In some examples, to support receiving the indication, the parameter indication component 1025 may be configured as or otherwise support a means for receiving the indication of the at least one parameter that identifies a frequency resource indicator value, where the RB set assignment and the subchannel assignment are identified based on the frequency resource indicator value.
In some examples, the available resource component 1040 may be configured as or otherwise support a means for transmitting, to the higher layer of the UE, a report that indicates the set of available resources. In some examples, the scheduling component 1045 may be configured as or otherwise support a means for receiving, from the higher layer of the UE, scheduling information for the interlace RB-based sidelink communication based on the report, where the scheduling information identifies the one or more resources used for transmitting the interlace RB-based sidelink communication.
In some examples, to support transmitting the report, the available subchannel component 1055 may be configured as or otherwise support a means for transmitting an indication of one or more available subchannels that identifies the set of available resources, where each available subchannel of the one or more available subchannels is associated with an RB set included in the frequency domain resource allocation.
In some examples, to support transmitting the report, the available single-slot resource component 1050 may be configured as or otherwise support a means for transmitting an indication of one or more available single-slot resources that identifies the set of available resources, where each available single-slot resource of the one or more available single-slot resources includes one or more subchannels associated with one or more RB sets included in the frequency domain resource allocation.
In some examples, to support transmitting the report, the available single-slot resource component 1050 may be configured as or otherwise support a means for transmitting an indication of one or more available single-slot resource sets that identifies the set of available resources, where each available single-slot resource set of the one or more available single-slot resource sets includes one or more subchannels associated with a quantity of contiguous RB sets included in the frequency domain resource allocation.
In some examples, each subchannel of the one or more subchannels is included in each RB set of the quantity of contiguous RB sets and corresponds to a respective subchannel index that is common to the quantity of contiguous RB sets. In some examples, each subchannel of the one or more subchannels is included in an RB set of the quantity of contiguous RB sets.
In some examples, the available single-slot resource component 1050 may be configured as or otherwise support a means for determining a proportion of available single-slot resources associated with each RB set included in the frequency domain resource allocation based on the resource identification procedure, where selecting the set of available resources is based on the determination.
In some examples, the available subchannel component 1055 may be configured as or otherwise support a means for determining a maximum quantity of available subchannels associated with each RB set included in the frequency domain resource allocation based on the resource identification procedure, where selecting the set of available resources is based on the determination.
In some examples, the interlace RB-based sidelink communication includes a MCSt. In some examples, the at least one parameter is associated with one or more slots. In some examples, each available resource of the set of available resources includes a set of consecutive single-slot resources that are associated with a set of multiple slots.
In some examples, each consecutive single-slot resource of the set of consecutive single-slot resources is associated with a slot of the set of multiple slots and a set of RB sets included in the frequency domain resource allocation. In some examples, each consecutive single-slot resource of the set of consecutive single-slot resources is associated with the set of multiple slots and a same set of RB sets included in the frequency domain resource allocation.
FIG. 11 illustrates a diagram of a system 1100 including a device 1105 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of or include the components of a device 805, a device 905, or a UE 115 as described herein. The device 1105 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1120, an input/output (I/O) controller 1110, a transceiver 1115, an antenna 1125, a memory 1130, code 1135, and a processor 1140. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1145) .
The I/O controller 1110 may manage input and output signals for the device 1105. The I/O controller 1110 may also manage peripherals not integrated into the device 1105. In some cases, the I/O controller 1110 may represent a physical connection or port to an external peripheral. In some cases, the I/O controller 1110 may utilize an operating system such as or another known operating system. Additionally or alternatively, the I/O controller 1110 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller 1110 may be implemented as part of a processor, such as the processor 1140. In some cases, a user may interact with the device 1105 via the I/O controller 1110 or via hardware components controlled by the I/O controller 1110.
In some cases, the device 1105 may include a single antenna 1125. However, in some other cases, the device 1105 may have more than one antenna 1125, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1115 may communicate bi-directionally, via the one or more antennas 1125, wired, or wireless links as described herein. For example, the transceiver 1115 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1115 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1125 for transmission, and to demodulate packets received from the one or more antennas 1125. The transceiver 1115, or the transceiver 1115 and one or more antennas 1125, may be an example of a transmitter 815, a transmitter 915, a receiver 810, a receiver 910, or any combination thereof or component thereof, as described herein.
The memory 1130 may include random access memory (RAM) and read-only memory (ROM) . The memory 1130 may store computer-readable, computer-executable code 1135 including instructions that, when executed by the processor 1140, cause the device 1105 to perform various functions described herein. The code 1135 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1135 may not be directly executable by the processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory 1130 may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
The processor 1140 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some cases, the processor 1140 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor 1140. The processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting resource selection for interlace RB-based transmissions) . For example, the device 1105 or a component of the device 1105 may include a processor 1140 and memory 1130 coupled with or to the processor 1140, the processor 1140 and memory 1130 configured to perform various functions described herein.
The communications manager 1120 may support wireless communication at a UE (e.g., the device 1105) in accordance with examples as disclosed herein. For example, the communications manager 1120 may be configured as or otherwise support a means for receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The communications manager 1120 may be configured as or otherwise support a means for performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The communications manager 1120 may be configured as or otherwise support a means for transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
By including or configuring the communications manager 1120 in accordance with examples as described herein, the device 1105 may support techniques for improved communication reliability, reduced latency, and more efficient utilization of communication resources.
In some examples, the communications manager 1120 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1115, the one or more antennas 1125, or any combination thereof. Although the communications manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1120 may be supported by or performed by the processor 1140, the memory 1130, the code 1135, or any combination thereof. For example, the code 1135 may include instructions executable by the processor 1140 to cause the device 1105 to perform various aspects of resource selection for interlace RB-based transmissions as described herein, or the processor 1140 and the memory 1130 may be otherwise configured to perform or support such operations.
FIG. 12 illustrates a flowchart showing a method 1200 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
At 1205, the method may include receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation. The operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by a parameter indication component 1025 as described with reference to FIG. 10.
At 1210, the method may include performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by a resource identification component 1030 as described with reference to FIG. 10.
At 1215, the method may include transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources. The operations of 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by an interlace component 1035 as described with reference to FIG. 10.
FIG. 13 illustrates a flowchart showing a method 1300 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE or its components as described herein. For example, the operations of the method 1300 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
At 1305, the method may include receiving an indication of at least one parameter that identifies a quantity of subchannels associated with each RB set included in a frequency domain resource allocation, where the quantity of subchannels indicates a subchannel assignment and an RB set assignment for the frequency domain resource allocation. The operations of 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a parameter indication component 1025 as described with reference to FIG. 10.
At 1310, the method may include performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The operations of 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a resource identification component 1030 as described with reference to FIG. 10.
At 1315, the method may include transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources. The operations of 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by an interlace component 1035 as described with reference to FIG. 10.
FIG. 14 illustrates a flowchart showing a method 1400 that supports resource selection for interlace RB-based transmissions in accordance with one or more aspects of the present disclosure. The operations of the method 1400 may be implemented by a UE or its components as described herein. For example, the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 11. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
At 1405, the method may include receiving an indication of at least one parameter that identifies a quantity of RB sets and one or more quantities of subchannels associated with the quantity of RB sets, where the quantity of RB sets identifies an RB set assignment and the one or more quantities of subchannels identifies a subchannel assignment. The operations of 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a parameter indication component 1025 as described with reference to FIG. 10.
At 1410, the method may include performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, where the set of candidate resources is based on the RB set assignment, the subchannel assignment, or both. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a resource identification component 1030 as described with reference to FIG. 10.
At 1415, the method may include transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources. The operations of 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by an interlace component 1035 as described with reference to FIG. 10.
The following provides an overview of aspects of the present disclosure:
Aspect 1: A method for wireless communication at a UE, comprising: Receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace RB-based communications, the at least one parameter indicating an RB set assignment, a subchannel assignment, or both, for a frequency domain resource allocation; performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace RB-based sidelink communication, wherein the set of candidate resources is based at least in part on the RB set assignment, the subchannel assignment, or both; and transmitting the interlace RB-based sidelink communication using one or more resources of the set of available resources.
Aspect 2: The method of aspect 1, wherein receiving the indication comprises: receiving the indication of the at least one parameter that identifies a quantity of subchannels associated with each RB set included in the frequency domain resource allocation, wherein the quantity of subchannels indicates the subchannel assignment and the RB set assignment for the frequency domain resource allocation.
Aspect 3: The method of aspect 1, wherein receiving the indication comprises: receiving the indication of the at least one parameter that identifies a quantity of RB sets and one or more quantities of subchannels associated with the quantity of RB sets, wherein the quantity of RB sets identifies the RB set assignment and the one or more quantities of subchannels identifies the subchannel assignment.
Aspect 4: The method of aspect 3, wherein the one or more quantities of subchannels is a single quantity of subchannels common to each RB set of the quantity of RB sets.
Aspect 5: The method of aspect 3, wherein the one or more quantities of subchannels is a plurality of quantities of subchannels, and each quantity of subchannels of the plurality of quantities of subchannels is associated with a respective RB set of the quantity of RB sets.
Aspect 6: The method of aspect 1, wherein receiving the indication comprises: receiving the indication of the at least one parameter that identifies a frequency resource indicator value, wherein the RB set assignment and the subchannel assignment are identified based at least in part on the frequency resource indicator value.
Aspect 7: The method of any of aspects 1 through 6, further comprising: transmitting, to the higher layer of the UE, a report that indicates the set of available resources; and receiving, from the higher layer of the UE, scheduling information for the interlace RB-based sidelink communication based at least in part on the report, wherein the scheduling information identifies the one or more resources used for transmitting the interlace RB-based sidelink communication.
Aspect 8: The method of aspect 7, wherein transmitting the report comprises: transmitting an indication of one or more available subchannels that identifies the set of available resources, wherein each available subchannel of the one or more available subchannels is associated with an RB set included in the frequency domain resource allocation.
Aspect 9: The method of aspect 7, wherein transmitting the report comprises: transmitting an indication of one or more available single-slot resources that identifies the set of available resources, wherein each available single-slot resource of the one or more available single-slot resources comprises one or more subchannels associated with one or more RB sets included in the frequency domain resource allocation.
Aspect 10: The method of aspect 7, wherein transmitting the report comprises: transmitting an indication of one or more available single-slot resource sets that identifies the set of available resources, wherein each available single-slot resource set of the one or more available single-slot resource sets comprises one or more subchannels associated with a quantity of contiguous RB sets included in the frequency domain resource allocation.
Aspect 11: The method of aspect 10, wherein each subchannel of the one or more subchannels is included in each RB set of the quantity of contiguous RB sets and corresponds to a respective subchannel index that is common to the quantity of contiguous RB sets.
Aspect 12: The method of aspect 10, wherein each subchannel of the one or more subchannels is included in an RB set of the quantity of contiguous RB sets.
Aspect 13: The method of any of aspects 1 through 12, further comprising: determining a proportion of available single-slot resources associated with each RB set included in the frequency domain resource allocation based at least in part on the resource identification procedure, wherein selecting the set of available resources is based at least in part on the determination.
Aspect 14: The method of any of aspects 1 through 12, further comprising: determining a maximum quantity of available subchannels associated with each RB set included in the frequency domain resource allocation based at least in part on the resource identification procedure, wherein selecting the set of available resources is based at least in part on the determination.
Aspect 15: The method of any of aspects 1 through 14, wherein the interlace RB-based sidelink communication comprises a multiple consecutive slot transmission, and the at least one parameter is associated with one or more slots.
Aspect 16: The method of aspect 15, wherein each available resource of the set of available resources comprises a set of consecutive single-slot resources that are associated with a plurality of slots.
Aspect 17: The method of aspect 16, wherein each consecutive single-slot resource of the set of consecutive single-slot resources is associated with a slot of the plurality of slots and a set of RB sets included in the frequency domain resource allocation.
Aspect 18: The method of aspect 16, wherein each consecutive single-slot resource of the set of consecutive single-slot resources is associated with the plurality of slots and a same set of RB sets included in the frequency domain resource allocation.
Aspect 19: An apparatus for wireless communication at a UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 18.
Aspect 20: An apparatus for wireless communication at a UE, comprising at least one means for performing a method of any of aspects 1 through 18.
Aspect 21: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 18.
It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.
As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.
The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration, ” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

An apparatus for wireless communication at a user equipment (UE) , comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace resource block-based communications, the at least one parameter indicating a resource block set assignment, a subchannel assignment, or both, for a frequency domain resource allocation;

perform a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace resource block-based sidelink communication, wherein the set of candidate resources is based at least in part on the resource block set assignment, the subchannel assignment, or both; and

transmit the interlace resource block-based sidelink communication using one or more resources of the set of available resources.
The apparatus of claim 1, wherein the instructions to receive the indication are executable by the processor to cause the apparatus to:

receive the indication of the at least one parameter that identifies a quantity of subchannels associated with each resource block set included in the frequency domain resource allocation, wherein the quantity of subchannels indicates the subchannel assignment and the resource block set assignment for the frequency domain resource allocation.
The apparatus of claim 1, wherein the instructions to receive the indication are executable by the processor to cause the apparatus to:

receive the indication of the at least one parameter that identifies a quantity of resource block sets and one or more quantities of subchannels associated with the quantity of resource block sets, wherein the quantity of resource block sets identifies the resource block set assignment and the one or more quantities of subchannels identifies the subchannel assignment.
The apparatus of claim 3, wherein the one or more quantities of subchannels is a single quantity of subchannels common to each resource block set of the quantity of resource block sets.
The apparatus of claim 3, wherein the one or more quantities of subchannels is a plurality of quantities of subchannels, and each quantity of subchannels of the plurality of quantities of subchannels is associated with a respective resource block set of the quantity of resource block sets.
The apparatus of claim 1, wherein the instructions to receive the indication are executable by the processor to cause the apparatus to:

receive the indication of the at least one parameter that identifies a frequency resource indicator value, wherein the resource block set assignment and the subchannel assignment are identified based at least in part on the frequency resource indicator value.
The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to:

transmit, to the higher layer of the UE, a report that indicates the set of available resources; and

receive, from the higher layer of the UE, scheduling information for the interlace resource block-based sidelink communication based at least in part on the report, wherein the scheduling information identifies the one or more resources used for transmitting the interlace resource block-based sidelink communication.
The apparatus of claim 7, wherein the instructions to transmit the report are executable by the processor to cause the apparatus to:

transmit an indication of one or more available subchannels that identifies the set of available resources, wherein each available subchannel of the one or more available subchannels is associated with a resource block set included in the frequency domain resource allocation.
The apparatus of claim 7, wherein the instructions to transmit the report are executable by the processor to cause the apparatus to:

transmit an indication of one or more available single-slot resources that identifies the set of available resources, wherein each available single-slot resource of the one or more available single-slot resources comprises one or more subchannels associated with one or more resource block sets included in the frequency domain resource allocation.
The apparatus of claim 7, wherein the instructions to transmit the report are executable by the processor to cause the apparatus to:

transmit an indication of one or more available single-slot resource sets that identifies the set of available resources, wherein each available single-slot resource set of the one or more available single-slot resource sets comprises one or more subchannels associated with a quantity of contiguous resource block sets included in the frequency domain resource allocation.
The apparatus of claim 10, wherein each subchannel of the one or more subchannels is included in each resource block set of the quantity of contiguous resource block sets and corresponds to a respective subchannel index that is common to the quantity of contiguous resource block sets.
The apparatus of claim 10, wherein each subchannel of the one or more subchannels is included in a resource block set of the quantity of contiguous resource block sets.
The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to:

determine a proportion of available single-slot resources associated with each resource block set included in the frequency domain resource allocation based at least in part on the resource identification procedure, wherein selecting the set of available resources is based at least in part on the determination.
The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to:

determine a maximum quantity of available subchannels associated with each resource block set included in the frequency domain resource allocation based at least in part on the resource identification procedure, wherein selecting the set of available resources is based at least in part on the determination.
The apparatus of claim 1, wherein the interlace resource block-based sidelink communication comprises a multiple consecutive slot transmission, and the at least one parameter is associated with one or more slots.
The apparatus of claim 15, wherein each available resource of the set of available resources comprises a set of consecutive single-slot resources that are associated with a plurality of slots.
The apparatus of claim 16, wherein each consecutive single-slot resource of the set of consecutive single-slot resources is associated with a slot of the plurality of slots and a set of resource block sets included in the frequency domain resource allocation.
The apparatus of claim 16, wherein each consecutive single-slot resource of the set of consecutive single-slot resources is associated with the plurality of slots and a same set of resource block sets included in the frequency domain resource allocation.
A method for wireless communication at a user equipment (UE) , comprising:

receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace resource block-based communications, the at least one parameter indicating a resource block set assignment, a subchannel assignment, or both, for a frequency domain resource allocation;

performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace resource block-based sidelink communication, wherein the set of candidate resources is based at least in part on the resource block set assignment, the subchannel assignment, or both; and

transmitting the interlace resource block-based sidelink communication using one or more resources of the set of available resources.
The method of claim 19, wherein receiving the indication comprises:

receiving the indication of the at least one parameter that identifies a quantity of subchannels associated with each resource block set included in the frequency domain resource allocation, wherein the quantity of subchannels indicates the subchannel assignment and the resource block set assignment for the frequency domain resource allocation.
The method of claim 19, wherein receiving the indication comprises:

receiving the indication of the at least one parameter that identifies a quantity of resource block sets and one or more quantities of subchannels associated with the quantity of resource block sets, wherein the quantity of resource block sets identifies the resource block set assignment and the one or more quantities of subchannels identifies the subchannel assignment.
The method of claim 21, wherein the one or more quantities of subchannels is a single quantity of subchannels common to each resource block set of the quantity of resource block sets.
The method of claim 21, wherein the one or more quantities of subchannels is a plurality of quantities of subchannels, and each quantity of subchannels of the plurality of quantities of subchannels is associated with a respective resource block set of the quantity of resource block sets.
The method of claim 19, wherein receiving the indication comprises:

receiving the indication of the at least one parameter that identifies a frequency resource indicator value, wherein the resource block set assignment and the subchannel assignment are identified based at least in part on the frequency resource indicator value.
The method of claim 19, further comprising:

transmitting, to the higher layer of the UE, a report that indicates the set of available resources; and

receiving, from the higher layer of the UE, scheduling information for the interlace resource block-based sidelink communication based at least in part on the report, wherein the scheduling information identifies the one or more resources used for transmitting the interlace resource block-based sidelink communication.
The method of claim 19, further comprising:

determining a proportion of available single-slot resources associated with each resource block set included in the frequency domain resource allocation based at least in part on the resource identification procedure, wherein selecting the set of available resources is based at least in part on the determination.
The method of claim 19, further comprising:

determining a maximum quantity of available subchannels associated with each resource block set included in the frequency domain resource allocation based at least in part on the resource identification procedure, wherein selecting the set of available resources is based at least in part on the determination.
The method of claim 19, wherein the interlace resource block-based sidelink communication comprises a multiple consecutive slot transmission, and the at least one parameter is associated with one or more slots.
An apparatus for wireless communication at a user equipment (UE) , comprising:

means for receiving, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace resource block-based communications, the at least one parameter indicating a resource block set assignment, a subchannel assignment, or both, for a frequency domain resource allocation;

means for performing a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace resource block-based sidelink communication, wherein the set of candidate resources is based at least in part on the resource block set assignment, the subchannel assignment, or both; and

means for transmitting the interlace resource block-based sidelink communication using one or more resources of the set of available resources.
A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE) , the code comprising instructions executable by a processor to:

receive, from a higher layer of the UE, an indication of at least one parameter to be used at the UE for selection of resources for interlace resource block-based communications, the at least one parameter indicating a resource block set assignment, a subchannel assignment, or both, for a frequency domain resource allocation;

perform a resource identification procedure on a set of candidate resources to select a set of available resources from the frequency domain resource allocation for an interlace resource block-based sidelink communication, wherein the set of candidate resources is based at least in part on the resource block set assignment, the subchannel assignment, or both; and

transmit the interlace resource block-based sidelink communication using one or more resources of the set of available resources.