Inter-user equipment (UE) coordination for sidelinks in unlicensed or shared spectrum

Abstract

Methods, systems, and devices for wireless communication are described. A first user equipment (UE) may receive an inter-UE coordination request message from a second UE, the inter-UE coordination request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The first UE may transmit, to the second UE, an inter-UE coordination response message including the scheduling information, the scheduling information including an indication of one or more of: a resource block set and an interleaving mode frequency configuration for multi-slot burst communication between the first UE and the second UE, or a start slot and slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. patent application No. 17 / 951,539, filed by LIU et al. on September 23, 2022, entitled “INTER-USE REQUIPMENT (UE) COORDINATION FOR SIDELINK IN AN UNLICENSED OR SHARED SPECTRUM,” which is assigned to the assignee of this application and is expressly incorporated herein by reference in its entirety. Technical Field

[0003] The following relates to wireless communications including inter-user equipment (UE) coordination for sidelink in unlicensed or shared spectrum. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be able to support communication with multiple users by sharing 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, advanced LTE (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 techniques 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 communication system may include one or more base stations, each of which supports wireless communication of a communication device, which may be referred to as a user equipment (UE). Summary of the invention

[0005] The described technology relates to improved methods, systems, devices and apparatuses for supporting inter-user equipment (UE) coordination (IUC) for side links in unlicensed or shared spectrum. For example, the described technology provides an IUC technology with improved resource signaling for inter-UE communication. A first UE may communicate wirelessly with a second UE (e.g., using a side link or PC5 interface). The first UE may receive or otherwise obtain an IUC request message from the second UE. The IUC request message may carry or otherwise convey information identifying a request for resource scheduling information for the first UE, the second UE, or both the first UE and the second UE. For example, the IUC request message may indicate preferred resources to be used and / or non-preferred resources to be avoided for the first UE, the second UE, or both UEs. The first UE may send or otherwise provide an IUC response message to the second UE. The IUC response message may carry or otherwise convey an indication of scheduling information to the second UE. The scheduling information may include, for example, an indication of a resource block (RB) set and an interleaving pattern frequency configuration, a starting time slot and a time-slot burst length configuration, or both for multi-slot burst communication between the first UE and the second UE.

[0006] A method for wireless communication at a first UE is described. The method may include: receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0007] An apparatus for wireless communication at a first UE is described. The apparatus may include: a processor; a memory in electronic communication with the processor; and instructions stored in the memory. The instructions may be executed by the processor to: receive an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and send an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0008] Another apparatus for wireless communication at a first UE is described. The apparatus may include: a component for receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and a component for sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0009] A non-transitory computer-readable medium storing code for wireless communication at a first UE is described. The code may include instructions executable by a processor to perform the following operations: receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of the following: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying, based on the IUC request message, a first RB set and an interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for multi-slot burst communication between a first UE and a second UE, wherein the indicated RB set and interleaving pattern frequency configuration may be based on the first RB set and the interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration may be based on the first starting time slot and time slot burst length configuration.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first RB set and the interleaving pattern frequency configuration include a field indicating the number of consecutive RB sets and the starting RB set, or a bitmap, wherein each bit in the bitmap can be configured to indicate the starting RB set and consecutive or discontinuous RB sets.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first RB set and interleaving pattern frequency configuration includes the number of contiguous or non-contiguous RB sets and the starting RB set, and the interleaving pattern for the starting RB set and the contiguous or non-contiguous RB sets.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first starting time slot and time slot burst length configuration includes a timing resource indication value identifying a number of time slots and a starting time slot included for multi-slot burst communication between a first UE and a second UE.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the IUC response message may include operations, features, components, or instructions for sending the indication of a starting time slot and a time slot burst length configuration in the IUC response message, the starting time slot and the time slot burst length configuration including a timing resource indication value identifying a number of time slots included for multi-slot burst communication between the first UE and the second UE and a starting time slot.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of the number of time slots included for multi-slot burst communication includes: a shared indication of the number of time slots that may be included in each instance of multi-slot burst communication, a first indication of the number of time slots that may be included in a first instance of multi-slot burst communication and a second indication of the number of time slots that may be included in one or more additional instances of multi-slot burst communication, or a separate indication of the number of time slots that may be included for each instance of multi-slot burst communication.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of the number of time slots included for multi-slot burst communication includes one or more fields indicating the number of time slots included for multi-slot burst communication, wherein each of the one or more fields may have a shared field length or a different field length.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication of the timing resource indication value includes an earliest starting time slot for multi-slot burst communication.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an IUC response message may include operations, features, components, or instructions for sending an indication of an RB set and an interleaving pattern frequency configuration in the IUC response message, the RB set and the interleaving pattern frequency configuration including a number of contiguous or non-contiguous RB sets and a starting RB set, and an interleaving pattern for the starting RB set and the contiguous or non-contiguous RB sets.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication of the interleaving pattern includes an interleaving pattern of a starting interleaving pattern for a first instance of the multi-slot burst communication and a shared offset value identifying an offset between each instance of the multi-slot burst communication.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of an interleaving pattern includes a bitmap, wherein each bit in the bitmap can be configured to identify a starting interleaving pattern for a first instance of a multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

[0021] A method for wireless communication at a second UE is described. The method may include: sending an IUC request message from a first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0022] An apparatus for wireless communication at a second UE is described. The apparatus may include: a processor; a memory in electronic communication with the processor; and instructions stored in the memory. The instructions may be executed by the processor to: send an IUC request message from a first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and receive an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0023] Another apparatus for wireless communication at a second UE is described. The apparatus may include: means for sending an IUC request message from a first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and means for receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0024] A non-transitory computer-readable medium storing code for wireless communication at a second UE is described. The code may include instructions executable by a processor to perform the following operations: sending an IUC request message from a first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of the following: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying, based on the IUC request message, a first RB set and an interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for multi-slot burst communication between a first UE and a second UE, wherein the indicated RB set and interleaving pattern frequency configuration may be based on the first RB set and the interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration may be based on the first starting time slot and time slot burst length configuration.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first RB set and the interleaving pattern frequency configuration include a field indicating the number of consecutive RB sets and the starting RB set, or a bitmap, wherein each bit in the bitmap can be configured to indicate the starting RB set and consecutive or discontinuous RB sets.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first RB set and interleaving pattern frequency configuration includes the number of contiguous or non-contiguous RB sets and the starting RB set, and the interleaving pattern for the starting RB set and the contiguous or non-contiguous RB sets.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first starting time slot and time slot burst length configuration includes a timing resource indication value identifying a number of time slots and a starting time slot included for multi-slot burst communication between a first UE and a second UE.

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying, based on the IUC response message, an indication of a starting time slot and a time slot burst length configuration, the starting time slot and the time slot burst length configuration including a timing resource indication value identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and a starting time slot.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of the number of time slots included for multi-slot burst communication includes: a shared indication of the number of time slots that may be included in each instance of multi-slot burst communication, a first indication of the number of time slots that may be included in a first instance of multi-slot burst communication and a second indication of the number of time slots that may be included in one or more additional instances of multi-slot burst communication, or a separate indication of the number of time slots that may be included for each instance of multi-slot burst communication.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of the number of time slots included for multi-slot burst communication includes one or more fields indicating the number of time slots included for multi-slot burst communication, wherein each of the one or more fields may have a shared field length or a different field length.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication of the timing resource indication value includes an earliest starting time slot for multi-slot burst communication.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying an indication of an RB set and an interleaving pattern frequency configuration based at least in part on the IUC response message, the RB set and the interleaving pattern frequency configuration including a number of contiguous or non-contiguous RB sets and a starting RB set, and an interleaving pattern for the starting RB set and the contiguous or non-contiguous RB sets.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication of the interleaving pattern includes an interleaving pattern of a starting interleaving pattern for a first instance of the multi-slot burst communication and a shared offset value identifying an offset between each instance of the multi-slot burst communication.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, an indication of an interleaving pattern includes a bitmap, wherein each bit in the bitmap can be configured to identify a starting interleaving pattern for a first instance of a multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 An example of a wireless communication system supporting inter-UE coordination for sidelink in unlicensed or shared spectrum in accordance with one or more aspects of the present disclosure is illustrated.

[0037] Figure 2An example of a wireless communication system supporting inter-UE coordination for sidelink in unlicensed or shared spectrum in accordance with one or more aspects of the present disclosure is illustrated.

[0038] Figure 3 An example of resource configuration supporting inter-UE coordination for sidelink in unlicensed or shared spectrum in accordance with one or more aspects of the present disclosure is illustrated.

[0039] Figure 4 An example of resource configuration supporting inter-UE coordination for sidelink in unlicensed or shared spectrum in accordance with one or more aspects of the present disclosure is illustrated.

[0040] Figure 5 and Figure 6 A block diagram of an apparatus supporting inter-UE coordination for a sidelink in an unlicensed or shared spectrum is shown in accordance with one or more aspects of the present disclosure.

[0041] Figure 7 A block diagram of a communication manager supporting inter-UE coordination for sidelinks in unlicensed or shared spectrum is shown in accordance with one or more aspects of the present disclosure.

[0042] Figure 8 A diagram of a system including a device supporting inter-UE coordination for sidelink in unlicensed or shared spectrum is shown in accordance with one or more aspects of the present disclosure.

[0043] Figures 9 to 12 A flow chart illustrating a method for supporting inter-UE coordination for a sidelink in an unlicensed or shared spectrum in accordance with one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0044] A wireless network may support inter-UE coordination (IUC) between user equipment (UEs). For example, a first UE may communicate with a second UE via a side link. The first UE may send an IUC message to the second UE, the IUC message identifying a preferred set of resources or a non-preferred set of resources that may be used by the second UE for scheduling decisions. The preferred or non-preferred resources may include resources associated with the first UE or resources associated with the second UE.

[0045] The first UE may transmit the IUC message as a response to the IUC request message received from the second UE.The IUC request message may also indicate preferred or non-preferred resources associated with the first UE or the second UE.

[0046] However, in some cases, the communication between UEs may include multi-slot burst communication performed using one or more resource block (RB) sets. In addition, different instances of the communication may be repeated across multiple time slots according to the burst mode. Conventional IUC technology does not provide a mechanism for the first UE or the second UE to indicate (e.g., in an IUC request message and / or in an IUC response message) timing and frequency information (e.g., signaling RB set information and repetition and offset information) that supports multi-slot burst communication between UEs.

[0047] The described technology relates to improved methods, systems, devices and apparatuses for supporting inter-UE coordination for side links in unlicensed or shared spectrum. For example, the described technology provides improved IUC technology for improving resource configuration for inter-UE communication. A first UE may perform communication with a second UE (e.g., using cellular Uu interface technology and / or using side link PC5 interface technology). The first UE may receive or otherwise obtain an IUC request message from the second UE. The IUC request message may carry or otherwise convey information identifying a request for resource scheduling information for the first UE, the second UE, or both the first UE and the second UE. For example, the IUC request message may indicate preferred resources and / or resources to be avoided for the first UE, the second UE, or both UEs. The first UE may send or otherwise provide an IUC response message to the second UE. The IUC response message may carry or otherwise convey an indication of scheduling information to the second UE. The scheduling information may include an indication of RB sets and interleaving mode frequency configurations, start slots and slot-time burst length configurations, or both for multi-slot burst communication between the first UE and the second UE.

[0048] Aspects of the present disclosure are first described in the context of wireless communication systems. Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow diagrams related to IUC for sidelinks in unlicensed or shared spectrum.

[0049] Figure 1 An example of a wireless communication system 100 supporting IUC for a sidelink in an unlicensed or shared spectrum in accordance with one or more aspects of the present disclosure is illustrated. The wireless communication 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 communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating according to other systems and radio technologies (including future systems and radio technologies not explicitly mentioned herein).

[0050] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may include devices in different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, etc. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) within which the UE 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 within which the network entity 105 and the UE 115 may support signal communication according to one or more radio access technologies (RATs).

[0051] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or both stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1 . The UEs 115 described herein may be capable of supporting communication with various types of devices, such as Figure 1 Communicate with other UEs 115 or network entities 105) as shown.

[0052] As described herein, a node of the wireless communication 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, the node may be a UE 115. As another example, the 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 node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from a second node.

[0053] In some examples, the network entities 105 may communicate with the core network 130, or with each other, or both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, the network entities 105 may communicate with each other directly (e.g., directly between each network entity 105) or indirectly (e.g., via the core network 130) via the backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, the network entities 105 may communicate with each other via midhaul communication links 162 (e.g., according to a midhaul interface protocol) or fronthaul communication links 168 (e.g., according to 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., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0054] 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 transceiver base 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 gigabit NodeB (any 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 terms). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, stand-alone) 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).

[0055] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration initiated by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, the network entity 105 may include one or more of the following: 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. The 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 transmit receive point (TRP). One or more components of the network entity 105 in the decomposed RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0056] The functional split between CU 160, DU 165, and 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 combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may host higher protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality and signaling (e.g., radio resource control (RRC), service data adaptation 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 the DUs 165 and RUs 170, such that the DUs 165 may support one or more layers of the protocol stack, and the RUs 170 may support one or more different layers of the protocol stack. The DUs 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between CU 160 and DU 165 or between DU 165 and RU 170 may be within the protocol layer (e.g., some functions of the protocol layer may be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by different ones of CU 160, DU 165, or RU 170). CU 160 may be further functionally split into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions. CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented based on interfaces (eg, channels) between layers of a protocol stack supported by respective network entities 105 that communicate via those communication links.

[0057] In a wireless communication system (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby 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 donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate 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). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a coupled IAB donor's DU 165. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0058] For example, an access network (AN) or RAN may include an access node (e.g., an IAB donor), communications between an IAB node 104, and one or more UEs 115. The IAB donor may facilitate connectivity between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, the IAB donor may refer to a RAN node having a wired or wireless connection to the core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). The IAB donor and the IAB node 104 may communicate via an F1 interface according to a protocol defining signaling messages (e.g., an F1 AP protocol). Additionally or alternatively, CU 160 may communicate with the core network via an interface (which may be an example of a portion of a backhaul link) and may communicate with other CUs 160 (e.g., CUs 160 associated with an alternative IAB donor) via an Xn-C interface (which may be an example of a portion of a backhaul link).

[0059] An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UE 115, wireless self-backhaul capabilities, etc.). DU 165 may act as a distributed scheduling node toward child nodes associated with IAB node 104, and IAB-MT may act as a scheduled node toward a parent node associated with IAB node 104. That is, an IAB donor may be referred to as a parent node that communicates with one or more child nodes (e.g., an IAB donor may relay transmissions to a UE through one or more other IAB nodes 104). Additionally or alternatively, depending on the relay chain or configuration of the AN, an IAB node 104 may also be referred to as a parent node or child node of other IAB nodes 104. Thus, the IAB-MT entity of the IAB node 104 may provide a Uu interface for the child IAB node 104 to receive signaling from the parent IAB node 104 , and a DU interface (eg, DU 165 ) may provide a Uu interface for the parent IAB node 104 to signal to the child IAB node 104 or the UE 115 .

[0060] For example, the IAB node 104 may be referred to as a parent node supporting communications to a child IAB node or as a child IAB node associated with an IAB donor, or both. The IAB donor may include a CU 160 having a wired or wireless connection (e.g., backhaul communication link 120) to the core network 130, and may act as a parent node of the IAB node 104. For example, the DU 165 of the IAB donor may relay transmissions to the UE 115 through the IAB node 104, or may directly signal the transmissions to the UE 115, or both. The CU 160 of the IAB donor may signal the establishment of a communication link to the IAB node 104 via the F1 interface, and the IAB node 104 may schedule transmissions (e.g., transmissions relayed from the IAB donor to the UE 115) via the DU 165. That is, data may be relayed to and from the IAB node 104 via signaling via the NR Uu interface of the MT to the IAB node 104. Communications with the IAB node 104 may be scheduled by the DU 165 of the IAB donor, and communications with the IAB node 104 may be scheduled by the DU 165 of the IAB node 104 .

[0061] In the case where the techniques described herein are applied to the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support IUC for sidelinks in unlicensed or shared spectrum 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., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0062] 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 term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. 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, UE 115 may include or may 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 communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0063] The UE 115 described herein may be capable of communicating with various types of devices, such as Figure 1The illustrated embodiments communicate with other UEs 115, which may sometimes act as relays, as well as the network entity 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc.

[0064] The UE 115 and the network entity 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" may refer to a set of RF spectrum resources having a physical layer structure defined for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion (e.g., bandwidth portion (BWP)) of an RF spectrum band that operates 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 for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any portion (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send," "receive," or "communicate" when referring to the network entity 105 may refer to any portion of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0065] In some examples, such as in a carrier aggregation configuration, a carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute RF Channel Number (EARFCN)) and may be identified based on a channel raster for discovery by UE 115. A carrier may operate in a standalone mode, in which case initial acquisition and connection may be made by UE 115 via the carrier, or a carrier may operate in a non-standalone mode, in which case a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0066] The communication link 125 shown in the wireless communication system 100 may include downlink transmissions (e.g., forward link transmissions) from the network entity 105 to the UE 115, uplink transmissions (e.g., return link transmissions) from the UE 115 to the network entity 105, or both, as well as other transmission configurations. A carrier may carry downlink communications or uplink communications (e.g., in FDD mode), or may be configured to carry downlink communications and uplink communications (e.g., in TDD mode).

[0067] A carrier may be associated with a particular bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths of carriers of a particular radio access technology (e.g., 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). A device of the wireless communication system 100 (e.g., a network entity 105, a UE 115, or both) may have a hardware configuration that supports communications using a particular carrier bandwidth, or may be capable of being configured to support communications using one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a network entity 105 or a UE 115 that supports concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0068] The signal waveform transmitted via the carrier may be composed 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 using MCM techniques, a resource element may refer to a symbol period (e.g., the duration of a modulation symbol) and a resource of a subcarrier, in which case the symbol period and the subcarrier spacing may be inversely related. The number 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), so that a relatively higher number of resource elements (e.g., in the transmission duration) and a relatively higher order modulation scheme may correspond to a relatively higher communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers, beams), and the use of multiple spatial resources may increase the data rate or data integrity of communications with UE 115.

[0069] One or more parameter sets for a carrier may be supported, and the parameter sets may include subcarrier spacing (Δf) and cyclic prefixes. A carrier may be divided into one or more BWPs with the same or different parameter sets. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications of a UE 115 may be constrained to one or more active BWPs.

[0070] The time interval for the network entity 105 or the UE 115 may be expressed in multiples of a basic time unit, which may be, for example, T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources 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., in the range of 0 to 1023).

[0071] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a certain number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a certain number of symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, the time slot may be further divided into a plurality of micro time 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 The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0072] A subframe, a time slot, a mini-time slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the amount of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0073] Carriers may be used to multiplex physical channels for communication according to various techniques. Physical control channels and physical data channels may be multiplexed via downlink carriers for signaling, for example, using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0074] The network entity 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with the network entity 105 (e.g., using a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other cell identifier) ​​used to distinguish adjacent cells. In some examples, a cell may also refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) within which the logical communication entity operates. Depending on various factors such as the capabilities of the network entity 105, such cells may range from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell may be or may include a building, a subset of a building, or an external space between or overlapping coverage areas 110, etc.

[0075] A macro cell typically covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have service subscriptions with a network provider that supports the macro cell. Small cells may be associated with lower power network entities 105 (e.g., lower power base stations 140) than macro cells, and small cells may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with small cells (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). The network entity 105 may support one or more cells, and may also use one or more component carriers to support communications via one or more cells.

[0076] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0077] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile coverage areas 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, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for respective coverage areas 110 using the same or different radio access technologies.

[0078] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the network entities 105 (e.g., base stations 140) may have similar frame timing, and transmissions from different network entities 105 may be approximately aligned in time. For asynchronous operation, the network entities 105 may have different frame timing, and in some examples, transmissions from different network entities 105 may not be aligned in time. The techniques described herein may be used for either synchronous operation or asynchronous operation.

[0079] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a network entity 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, wildlife monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0080] Some UEs 115 may be configured to employ an operating mode that reduces power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception but does not transmit and receive concurrently). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power saving deep sleep mode when not engaged in active communications, operating using limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0081] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). The UE 115 may be designed to support ultra-reliable, low-latency or critical functions. Ultra-reliable communication 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.

[0082] In some examples, a UE 115 may be configured to support direct communication with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 in such a group may be outside of the coverage area 110 of the network entity 105, or may otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication 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, network entity 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105.

[0083] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these items. The vehicle can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units), or communicate with the network via one or more network nodes (e.g., network entity 105, base station 140, RU 170) using vehicle-to-network (V2N) communication, or both.

[0084] 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 a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access layer (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a network entity 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be delivered through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0085] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from about 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 these waves may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than communications using smaller frequencies and longer wavelengths in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0086] The wireless communication system 100 may also operate in a super high frequency (SHF) region (also known as a centimeter band) in the range of 3 GHz to 30 GHz or in an extremely high frequency (EHF) region (e.g., 30 GHz to 300 GHz) (also known as a millimeter band) using a spectrum. In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between UE 115 and network entity 105 (e.g., base station 140, RU 170), and the EHF antenna of the corresponding device may be smaller and closer than the UHF antenna. In some examples, such technology may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may have even greater attenuation and a shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted across transmissions using one or more different frequency regions, and the use of frequency bands specified across these frequency regions may vary by country or regulatory agency.

[0087] The wireless communication system 100 may utilize both licensed RF spectrum bands and unlicensed RF spectrum bands. For example, the wireless communication system 100 may use unlicensed bands such as the 5 GHz Industrial, Scientific, and Medical (ISM) band to employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating using unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 may employ carrier sensing for conflict detection and avoidance. In some examples, operations performed using unlicensed bands may be based on carrier aggregation configuration in conjunction with component carriers (e.g., LAA) that operate using licensed bands. Operations performed using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0088] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the network entity 105 or UE 115 may be located in 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 the network entity 105 may be located at different geographical locations. The network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that the network entity 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0089] The network entity 105 or UE 115 may use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technology may be referred to as spatial multiplexing. The multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technologies include: single-user MIMO (SU-MIMO), in which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to multiple devices.

[0090] 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 direct 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 signals conveyed via antenna elements of an antenna array so that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other orientation).

[0091] The network entity 105 or UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the network entity 105 (e.g., base station 140, RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the network entity 105 along different directions. For example, the network entity 105 may send signals according to different sets of beamforming weights associated with different transmission directions. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device (such as network entity 105), or by a receiving device (such as UE 115)) beam directions for later transmission or reception by the network entity 105.

[0092] Some signals, such as data signals associated with a particular receiving device, may be sent by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., a direction associated with a receiving device (such as receiving network entity 105 or receiving UE 115)). In some examples, a beam direction associated with transmission along a single beam direction may be determined based on signals sent along one or more beam directions. For example, UE 115 may receive one or more of the signals sent by network entity 105 along different directions, and may report to network entity 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0093] In some examples, transmission by a device (e.g., by network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured beam set across a system bandwidth or one or more subbands. Network entity 105 may send a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)), which may be precoded or unprecoded. UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel codebook, a linear combination codebook, a port selection codebook). Although these techniques are described with reference to signals sent along one or more directions by a network entity 105 (e.g., base station 140, RU 170), UE 115 may use similar techniques to send signals multiple times along different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115), or to send signals along a single direction (e.g., to send data to a receiving device).

[0094] A receiving device (e.g., UE 115) may perform receiving operations according to multiple receiving configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a receiving device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple receiving directions by receiving via different antenna subarrays, processing the received signals according to different antenna subarrays, receiving according to different receiving beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing the received signals according to different receiving beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receiving configurations or receiving directions. In some examples, the receiving device may use a single receiving configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0095] The wireless communication 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. The RLC layer may perform packet segmentation and reassembly to communicate via logical channels. The MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also implement error detection techniques, error correction techniques, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer may provide the establishment, configuration, and maintenance of an RRC connection that supports radio bearers of user plane data between the UE 115 and the network entity 105 or the core network 130. The PHY layer may map transport channels to physical channels.

[0096] UE 115 and network entity 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood of correctly receiving data via a communication link (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve the throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot or according to some other time interval.

[0097] A first UE (e.g., UE 115) may receive an IUC request message from a second UE (e.g., a different UE 115), the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The first UE may send an IUC response message including scheduling information to the second UE. The scheduling information may include an indication of one or more of: an RB set and an interleaving pattern frequency for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length for multi-slot burst communication between the first UE and the second UE.

[0098] The second UE (e.g., another UE 115) may send an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The second UE may receive an IUC response message including scheduling information from the first UE. The scheduling information may include an indication of one or more of: an RB set and an interleaving pattern frequency for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length for multi-slot burst communication between the first UE and the second UE.

[0099] Figure 2An example of a wireless communication system 200 that supports IUC for a side link in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is illustrated. The wireless communication system 200 may implement aspects of the wireless communication system 100. The wireless communication system 200 may include a UE 205 and a UE 210, which may be examples of corresponding devices described herein. That is, the UE 205 and the UE 210 may each be an example of a UE. However, the UE 205 may also be referred to as a first UE, and the UE 210 may also be referred to as a second UE. The reference to the first UE or the second UE is intended to distinguish between a UE that sends an IUC request message and a UE that sends an IUC response message. In Figure 2 In the illustrated non-limiting example, UE 210 sends an IUC request message (eg, referring to the second UE), and UE 205 sends an IUC response message (eg, referring to the first UE).

[0100] The wireless communication system 200 may support IUC between UE 205 and UE 210. In general, IUC techniques (such as the techniques described herein) may be employed to improve wireless communications broadly. For example, the IUC technique may be triggered by a condition occurring for a specific UE (e.g., a UE experiences a threshold interference from another UE) or by a condition occurring more broadly for the network (e.g., increased network traffic may result in a need for improved coordination between UEs). In some examples, the IUC technique is triggered by an IUC request message. The IUC technique may typically be enabled or disabled by the network (e.g., using RRC signaling, medium access control-control element (MAC-CE) signaling, or downlink control information (DCI) signaling). As a result, the IUC may improve communications between coordinated UEs, or may improve communications between one of the coordinated UEs communicating with different UEs or network entities. The IUC technique may be used for cellular communications (e.g., Uu interface), sidelink communications (e.g., PC5 interface), or other communication protocols.

[0101] An IUC technique according to a request-based triggering method may include a second UE (UE 210 in this example) sending or otherwise providing an IUC request message to a first UE (UE 205 in this example). In some examples, the second UE uses an IUC request message to indicate its preferred resources. For example, the first UE may be the intended receiver of the second UE. In this case, the second UE may want to use resources determined to be available from the perspective of the second UE. This enables the second UE to perform transmission resource selection based on physical layer channel sensing determined by the second UE. When determining the preferred resource set indicated in the IUC request, the first UE typically uses the parameters provided in the IUC request (e.g., a request for resource scheduling information) to apply a traditional resource selection process. For example, the first UE may exclude candidate single-slot resources belonging to a time slot in which the first UE is not expected to perform sidelink reception of a transmission block due to half-duplex operation.

[0102] In some examples, the IUC request message may signal or otherwise indicate non-preferred resources. For example, if the first UE is the intended receiver of the second UE, the second UE may want to know in which resources the first UE is receiving a lot of interference from nearby UEs so that the second UE can avoid these resources. In the case where the first UE is not the intended receiver of the second UE, the second UE may not want to cause interference to the first UE, and therefore want to know which resources to avoid or want to minimize interference to the first UE. Therefore, the IUC request message may carry or otherwise convey a request for scheduling information (e.g., resources) for the first UE, the second UE, or both UEs.

[0103] IUC may occur between the first UE and the second UE using various signaling techniques. For example, the IUC request message may be signaled using a sidelink control information (SCI) two (SCI 2) message, MAC-CE signaling, or other signaling techniques. SCI message format 2-C may include all the same fields in SCI message format 2-A, except for the broadcast type indicator. For example, the IUC request may include a resource pool level (pre) configuration, which may enable one of the following alternatives. The first alternative may include using MAC CE and SCI 2 as a container for an explicit IUC request sent from the second UE to the first UE. When both SCI format 2-C and MAC-CE are used as containers for explicit IUC requests for IUC information, the same bit field size used for transporting requests in SCI format 2-C may be applied to MAC-CE. In some examples, SCI message format 2-C may be optional for the receiving UE. Whether to use MAC-CE signaling or additionally use SCI 2 signaling generally depends on the UE specific implementation. The second alternative may include using MAC-CE signaling as a container for explicit IUC requests sent. When MAC-CE signaling is used as a container for explicit IUC requests requesting IUC information, the same bit field size used for the IUC request message in SCI 2 may be applied to the MAC-CE signaling.

[0104] For example, a conventional IUC request message (e.g., using MAC-CE or MAC-CE and SCI 2 signaling) may include a bit indicating whether the IUC request is a request for (non-) preferred resources or is offering (non-) preferred resources (e.g., an offer / request indicator). The IUC request message may include a bit indicating the priority of the IUC request. The IUC request message may include a bit indicating the number of subchannels (e.g., (non-) preferred resources of the first UE or the second UE). For example, the IUC request message may indicate: in The IUC request message may include an indication of the resource reservation period. For example, the IUC request message may indicate Y, where Where N rsv_period is the number of entries in the higher layer parameter sl-ResourceReservePeriodList if the higher layer parameter sl-MultiReserveResource is configured. Otherwise Y=0. The IUC request message may indicate a resource selection window position that identifies the time slots to be used for sensing (e.g., time slots n+T1 and n+T2). For example, the IUC request message may indicate Where u is 0, 1, 2 or 3 for SCS of 15kHz, 30kHz, 60kHz or 120kHz, respectively. The IUC request message may include a resource set type, which uses a bit to indicate whether the IUC request is for preferred resources or non-preferred resources (e.g., when the parameter determineResourceSetTypeScheme1 is set to "UE-B'srequest"). Otherwise, no bit is allocated to the resource set type field.

[0105] Thus, both MAC-CE and SCI 2 may be used to convey an IUC request message as well as an IUC response message, wherein both MAC-CE and SCI 2 formats use the same or similar fields. Each (non-) preferred resource indicated in the IUC request message and / or the IUC response message may indicate a timing resource indicator value (TRIV), a frequency resource indicator value (FRIV), and a resource repetition indicator (RRI), which identifies an offset between repetitions of a first resource combination in the time domain. For the IUC response message, MAC-CE signaling techniques may be used to signal N>2 (non-) preferred resource combinations. For N<2 (non-) preferred resource combinations, MAC-CE and additional SCI 2 signaling may be used for the IUC response message.

[0106] In the SCI 2 signaling example, the IUC response message (also referred to as IUC information for short) carried in the SCI message format 2-C may include the same fields as the SCI message format 2-A, except for the broadcast type indicator. In some examples, when the broadcast type of the IUC response message is a unicast broadcast type, SCI 2 may be used in addition to MAC-CE signaling. When both SCI 2 and MAC-CE signaling are used as containers for the IUC information, slot offsets up to 255 may be supported.

[0107] In the SCI 2IUC response message example, the IUC response message may also include a bit indicating whether the IUC response message is providing an indication of a (non-) preferred resource or requesting an indication of a (non-) preferred resource. The SCI 2IUC response message may also indicate a resource combination. For example, the SCI 2IUC response message may indicate: in Provided by the higher layer parameter sl-NumSubchannel. is the number of entries in the higher layer parameter sl-ResourceReservePeriodList if the higher layer parameter sl-MultiReserveResource is configured. Otherwise Y=0.

[0108] The IUC response message may include a first resource location field and a reference time slot location field. The first resource location (eg, in the time domain) may use bits to signal a starting time slot (eg, a reference time slot). The reference time slot location may indicate Where u is 0, 1, 2, or 3 for SCS of 15 kHz, 30 kHz, 60 kHz, or 120 kHz, respectively. The IUC request message may include a resource set type that uses a bit to indicate whether the IUC request is for preferred resources or non-preferred resources (e.g., when the parameter determineResourceSetTypeScheme1 is set to "UE-B'srequest"). Otherwise, no bits are allocated to the resource set type field. The IUC response message may include the lowest subchannel index of the first resource position of each TRIV. For example, this field may indicate in Provided by the higher layer parameter sl-NumSubChannel. In some examples, the lowest subchannel index of the first resource position of each TRIV may be indicated separately in the IUC response message. In some examples, the IUC response message may include the actual number of resource combinations field. In the IUC response message, the field size of the indication of resource combinations using the SCI 2 format may be determined based on N=2. The indication of may be for FRIV, the indication of "9" or some other value may be for TRIV, and the indication of Y may be for RRI. The indication of the first resource position of each TRIV may be an indication of a slot offset relative to a reference slot.

[0109] In the MAC-CE signaling example, the IUC response message carried in the MAC-CE may include fields similar to the SCI 2 format. However, the number of resources indicated using the MAC-CE signaling may be greater than 2 (e.g., N does not have to be equal to 2). The MAC-CE IUC response message may include an Offer / Request Indicator field. The MAC-CE IUC response message may indicate a Resource Combination field. For example, the Resource Combination field may indicate in Provided by the higher layer parameter sl-NumSubchannel. is the number of entries in the higher layer parameter sl-ResourceReservePeriodList if the higher layer parameter sl-MultiReserveResource is configured. Otherwise Y=0.

[0110] The MAC-CE IUC response message may include a first resource location field and a reference time slot location field. The first resource location (eg, in the time domain) may be represented using bits to Wherein, for the case when only MAC-CE is used as a container for the IUC response message, X is provided by the (pre)configured maximum value of the timeslot offset. The reference timeslot position may indicate Where u is 0, 1, 2, or 3 for SCS of 15 kHz, 30 kHz, 60 kHz, or 120 kHz, respectively. The MAC-CE IUC request message may include a resource set type that uses bits to indicate whether the IUC request is for preferred resources or non-preferred resources. The MAC-CE IUC response message may include the lowest subchannel index of the first resource position of each TRIV. For example, this field may indicate in Provided by the higher layer parameter sl-NumSubChannel. In some examples, the maximum value of N resource combinations conveyed in the IUC information may be defined so that the total payload size of the IUC response message does not result in an excessive size of the transport block (TB) carrying the MAC-CE. For the slot offset that is (pre)configured to indicate the first resource position of each TRIV relative to the reference slot, the granularity of the slot offset may be 1 logical slot, the (pre)configured maximum value of the slot offset may be up to 8000, and when both SCI 2 and MAC-CE are used as containers for the IUC response, the maximum value of the slot offset may be 255. When MAC-CE is used as the only container for carrying the IUC information, the maximum value of the slot offset may be the (pre)configured maximum value.

[0111] In some examples, SCI may be used to schedule multiple transmission time intervals (TTIs) (e.g., SCI may be used to schedule multiple physical sidelink control channel (PSCCH) transmissions and / or physical sidelink shared channel (PSSCH) transmissions) to save control signaling. For example, embedded SCI in PSSCH (Alternative 1) and decoupled SCI pools (Alternative 2) may be considered. For frequency range two (FR2), Alternative 2 may be preferred because one SCI may include quasi-co-location (QCL) information in the SCI and allow the receiver to apply the appropriate QCL for PSSCH decoding. SCI 1 may reserve up to 2 future time slot bursts for multi-TB retransmissions. A new time resource allocation field (K0 and the number of consecutive time slots) may be applied. The number of consecutive time slots for retransmission may be the same as that used in the first transmission, or may be RRC configured separately. A time domain resource allocation (TDRA) indication or a frequency domain resource allocation (FDRA) indication may reserve future time slot / mini-slot bursts for PSSCH retransmissions. Additionally, the TDRA field or the FDRA field may be used to reserve control micro-slots for future rescheduling of the SCI for the decoupled control pool. Additionally, SCI 1 may include a common FDRA field and MCS field for all PSSCH time slots, a β offset for SCI 2, and a reserved transmit beam index and transmitter identifier if beam reservation is supported. SCI 2 for scheduling burst communications typically carries a HARQ identifier and a service area identifier (SAI) for the first scheduled PSSCH time slot, and these values ​​are virtual for subsequent PSSCH time slots. A single K1 and PRI for HARQ feedback, a source / destination identifier, a new data indicator (NDI) and a redundancy version (RV) for each scheduled PSSCH time slot, and a transmit configuration indicator (TCI) status for all scheduled PSSCH time slots may be indicated in SCI 2 for scheduling multiple TBs (Alternative 2).

[0112] In some examples, communications may be performed on unlicensed or shared radio bands. In unlicensed cellular communications, PUSCH resource allocation for NR-U may use (X, Y) to indicate resource allocation. X may indicate which interlaces are being allocated, and Y may indicate which RB sets are being allocated. For the X indication in the 30kHz SCS case, a five-bit bitmap may be used to support any interlace combination. For the 15kHz SCS case, continuous interlace allocation may be supported, where some (conventional) interlace allocation sets are supported using RIV. For the Y indication, continuous RBs are supported for allocation. For independent SL-U deployments, SL nodes may not use the same point A (e.g., frequency grid), and the absolute interlace index definitions may be different. In some examples, FDRA may be used in the form of a relative allocation starting from the current subchannel, where FDRA indicates how many subchannels are allocated.

[0113] However, these techniques limit the utilization of IUC processes. For example, a transmitter may prefer to clear the listen-before-talk (LBT) process and transmit in certain RB sets because there is less interference (e.g., WiFi interference) in a 20MHz channel and the receiving node may not know the interference around the transmitter. Therefore, the transmitter may want to transmit the recommended RB set to help the receiver select preferred resources. However, conventional techniques only support (e.g., carried in an IUC request message and / or in an IUC response message) IUC information that can only signal up to N (N to up to 3) TRIVs with (N-1) first resource positions, the first resource position indicating an offset from a reference time slot to the first resource indicated in the TRIV. The first TRIV is relative to the reference time slot, while the second TRIV or the third TRIV is relative to the indicated first resource position (which is relative to the reference time slot). Each TRIV can signal up to three time slots within 32 time slots from the reference point. For sidelink U operation, the sidelink node may select or reserve multiple consecutive time slots to handle LBT uncertainty or burst traffic, and TRIV, FRIV, or both signaling according to such conventional techniques do not support such resource signaling in IUC exchanges. As an example of FRIV indicated in IUC information, signaling needs to indicate RB sets and interleaving information, such as for supporting sidelink U.

[0114] Thus, aspects of the techniques discussed herein provide relative (X, Y) indications in IUC exchanges (such as for supporting sidelink U PSSCH). Relative X (bitmap or RIV) relative to scheduled SCI 1 interlaces may be supported. The X bitmap may indicate which interlaces are allocated, which utilizes wraparound (e.g., repetition of the indicated interlace). Relative Y may be relative to the SCI 1 receive RB set (e.g., may indicate the number of occupied RB sets starting from the SCI 1 receive RB set). The improved signaling techniques described may be applicable to IUC request messages, IUC response messages, or both.

[0115] For example, UE 210 may send or otherwise provide (and UE 205 may receive or otherwise obtain) an IUC request message. In some aspects, the IUC request message may indicate a priority value, a number of subchannels, a time interval between periodic transmissions, a resource selection window, etc. For example, the IUC request message may include a prio indicating the priority of the intended transmission of the second UE. TX field (priority value), indicating the expected transmission of the second UE subCH field (logical number of the subchannel) and the second UE's intended transmission P rsvp_Txfield (reservation period of the time interval between the periodic transmissions of the second UE). The start / end time of the resource selection window may be based on the packet delay budget (PDB) of the transmissions of the second UE. The start / end time of the resource selection window (RSW) may be in the form of a combination of a dual frequency network (DFN) index and a timeslot index. If the first UE is the intended receiver, the UE 205 may provide preferred resources based on the modified resource selection or non-preferred resources with a high amount of interference in the IUC response message.

[0116] In the unlicensed sidelink, the second UE may prefer a certain set of RBs (e.g., in a 20 MHz channel) in which the second UE can more easily clear LBT (e.g., identify suspected clean channels). Therefore, the second UE may determine whether the first UE will provide an indication of a preferred set of preferred RB sets in the IUC response message. The second UE may want to provide a burst of preferred time slots to the first UE to carry multiple TBs (e.g., for eMBB services) or resolve LBT uncertainty. Therefore, the second UE may want to recommend the number of time slots in the preferred burst.

[0117] Thus, in some examples, in addition to or in lieu of the information discussed above, the IUC request message may carry or otherwise convey the requested RB set and interleaving pattern frequency configuration and the starting time slot and time slot burst length configuration for multi-slot burst communication between UE 205 and UE 210. For example, an IUC request message requesting resource scheduling information for (non-) preferred resources may include an indication of the number of time slots in a burst of preferred time slots and the recommended RB set. The second UE may suggest the recommended RB set to the first UE in the IUC request message so that the second UE may make a resource selection (scheduling decision) within the recommended RB set. In the sidelink unlicensed two-part FDRA (X, Y) indication, Y may be used to indicate the number of consecutive RB sets and the starting RB set, and X may be used to indicate which interleaving is allocated.

[0118] Broadly, the requested RB set and interleaving pattern frequency in the IUC request message may include an indication of the starting RB set and an indication of the number of continuous RB sets, or a bitmap using each bit to indicate the starting RB set and continuous or discontinuous RB sets. That is, different options may be used to indicate the recommended RB set in the IUC request message. One option may include that the IUC request message includes an indication of the number of continuous RB sets and the starting RB set (e.g., reusing Y encoding technology). Another option may include that the IUC request message includes a bitmap of the recommended RB set. That is, each bit in the bitmap may correspond to a unique RB set, and the bit of the bitmap may be set or otherwise configured to indicate whether the corresponding RB set is allocated. This may enable signaling of discontinuous RB sets and the starting RB set (e.g., the RB set with the lowest index) in the IUC request (e.g., the requested RB set and interleaving frequency configuration and the requested starting time slot and time slot burst length configuration). The number of bits included in the bitmap may be based on the number of potential RB sets that can be allocated for communication. Likewise, if the second UE knows the number of timeslots required (e.g., for eMBB traffic and / or to clear the LBT process), the IUC request message may signal the recommended number of timeslots in a burst of preferred timeslots. The first UE may then make a resource selection based on the recommendation and return a preferred burst resource with the desired length in the IUC response message. This may signal the interleaving pattern to be used during the burst resource.

[0119] Therefore, to resolve LBT uncertainty or burst traffic, the second UE may indicate in the IUC request message a burst of time slots for initial transmission and retransmission, as well as a starting time slot and a time slot burst length (e.g., the number of time slots included for multi-slot burst communication). Therefore, in some examples, the RB set and interleaving pattern frequency configuration indicated in the IUC response message may be based on the requested RB set and interleaving pattern frequency configuration. Similarly, the starting time slot and time slot burst length configuration indicated in the IUC response message may be based on the requested starting time slot and time slot burst length indicated in the IUC request message.

[0120] UE 205 may respond to the IUC request message by sending an IUC response message to UE 210. As discussed, the IUC response message may carry additional information of resources supporting multi-slot burst communication. In some aspects, the resource information indicated in the IUC response message may be based at least to some extent on the resource information indicated in the IUC request message. Therefore, the IUC response message may carry or otherwise convey an indication of the starting time slot and the length of the time slot burst (e.g., a TRIV identifying the number of time slots and the starting time slot included for multi-slot burst communication). That is, the IUC response message may support resource scheduling information identifying a burst supporting communication in a (non-) preferred time slot. In some aspects, this may include using a TRIV for each (non-) preferred resource combination, and including an additional length field to indicate the length of the time slot burst after the time slot indicated by the TRIV.

[0121] In some examples, the indication of the number of time slots included for the multi-slot burst communication may include a shared indication of the number of time slots included in each instance of the multi-slot burst communication. For example, the same time slot burst length may be used for each instance of the multi-slot burst communication. This may use a common burst duration field in the IUC response message for (non-) preferred resources.

[0122] In some examples, the indication of the number of time slots included for the multi-slot burst communication may include a first indication of the number of time slots included in the first instance of the multi-slot burst communication and a second indication of the number of time slots included in the additional instance of the multi-slot burst communication. For example, for (non-) preferred resources, a different number of consecutive time slots may be signaled in the IUC response message. Different burst duration fields may be used for the initial (e.g., first) instance and subsequent instances of the multi-slot burst communication.

[0123] In some examples, the indication of the number of time slots included for multi-slot burst communication may include a separate indication of the number of time slots included for each instance of multi-slot burst communication. That is, the time slots indicated by each TRIV may be signaled together with its own indication of the number of consecutive time slots for each instance of multi-slot burst communication. In some examples, the field length used for the time slots indicated by each signaled TRIV may be the same or different. That is, an alternative may be to share a common length field between each indicated instance, or to use different field lengths for time slot bursts (e.g., each instance has its own time slot burst length field size).

[0124] In some examples, the wireless communication system 200 can support overbooking on a reserved channel occupancy time (COT) (e.g., the time in which a channel is reserved after a successful LBT process). Thus, the IUC exchange can support resource selection and reservation using different starting positions. Even when some resources are reserved, the first UE may want to indicate a preferred resource with a shorter common phase error (CPE) or a later starting position when overlapping with a reserved COT resource.

[0125] Thus, in some examples, the IUC response message may indicate the earliest starting time slot for multi-slot burst communication. For example, the IUC response message may carry or otherwise convey an indication of the starting position of the (non) preferred resource. For example, the first UE (e.g., UE 205) may indicate the earliest starting position based on its resource selection. If the first UE identifies a reservation with a specific starting position within a starting position set associated with a given priority, the first UE may select a later starting position within the set (such as a starting position just after the reserved starting position). The second UE may select a starting position that is no earlier than the starting position indicated in the preferred resource (e.g., in the IUC response message). This may enable the second UE to yield to the first UE, which reserves an earlier starting position (sensed by the first UE) in the IUC response message.

[0126] If the second UE determines that an earlier starting position within the starting position set associated with a given priority is not available for a preferred resource, then that resource may be overloaded.The second UE may attempt to pick a resource from the preferred resources that is less overloaded.

[0127] Thus, the resource combination field in the IUC response message may include N FRIVs for N (non) preferred resource sets. In order to support frequency resource allocation in terms of RB sets and interleaving (e.g., in an unlicensed side link), the FRIV field of the IUC response message may also be enhanced. In some aspects, this may include using a two-part FDRA (X, Y) for the FRIV indication, and including a reference RB set and interleaving in the IUC response message. The IUC response message may carry or otherwise convey an indication of the starting RB set in the FDRA (e.g., in addition to or in place of the starting subchannel indication) and an indication of the starting interleaving of the first resource. That is, the IUC response message may carry or otherwise convey an indication of the RB set and interleaving pattern frequency configuration, which includes the number of RB sets (e.g., continuous or non-continuous) and the starting RB set and the interleaving pattern for the number of RB sets and the starting RB set.

[0128] For Y parts (RB sets), there may be K RB sets in the resource pool. In a non-limiting example where contiguous RB sets are allocated, the UE 205 may jointly encode the number of RB sets and the starting RB set using up to three (N) resources. This may include using Units, where N = 2, or use Units digit, where N=3.

[0129] For X parts (interlaces), joint encoding of the initial assignment and future reservation offsets is possible (e.g., when indicating consecutive time slots). For N=Y+1 (Y future reservations), there may be a total of M interlaces (e.g., if L interlaces are allocated), and the IUC response message may indicate signaling (ML) Y The FDRA indicated in the IUC response message may contain Units, where N = 2, or use bits, where N = 3. To use a relative bitmap to indicate non-continuous interleaving (assuming a total of M interleavings), assuming that Y future reservations may use the same interleaving pattern but with different relative interleaving offsets, the resulting indication may use an M-bit bitmap for the first resource and a 1-bit bitmap for 1 future reservation. additional bits and are reserved for future use Additional bits.

[0130] Thus, the IUC request message and the IUC response message may carry or otherwise convey an indication of time and / or frequency resources suitable for multi-slot burst communications between UE 205 and UE 210 .

[0131] Figure 3 An example of a resource configuration 300 for supporting IUC for a sidelink in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is illustrated. The resource configuration 300 may implement aspects of the wireless communication system 100 and / or 200. Aspects of the resource configuration 300 may be implemented at or by a UE, which may be an example of a corresponding device described herein.

[0132] As discussed above, aspects of the techniques described herein provide improved IUC exchanges between UEs. These improvements generally support IUC request messages, IUC response messages, or both, thereby indicating frequency and time resources at the RB set level, identifying timing (e.g., offset, delay, repetition) parameters for multi-slot burst communications between UEs, etc. Resource configuration 300 illustrates a non-limiting example of resources configured (e.g., indicated in an IUC request or response message) or resources scheduled in response to an IUC message.

[0133] For example, the first UE may send or otherwise provide an IUC response message to the second UE. The IUC response message may be triggered by the occurrence of an event or condition, or may be triggered by an IUC request message received from the second UE. The IUC response message may carry or otherwise convey scheduling information. The scheduling information may include an RB set and an interleaving pattern frequency, a starting time slot and a time slot burst length, or both for multi-slot burst communication. In some examples, the IUC request message may indicate a requested RB set and an interleaving pattern frequency configuration, a requested starting time slot and a time slot burst length, or both for multi-slot burst communication.

[0134] Resource configuration 300 illustrates an example of resource scheduling for multi-slot burst communication, which can be signaled or otherwise based on IUC message exchange. For example, the IUC response message can indicate a first resource configuration 305 and a second resource configuration 310. Each resource combination can identify a set of time slots starting at a reference time slot 315, which can be used for a first multi-slot burst communication set using the first resource combination 305. The first set of time slots starting at the reference time slot 315 can include three time slots, which can be scheduled by the first TRIV and FRIV indications, by way of example only. For example, the first TRIV indicated in the IUC response message can identify the first three time slots (the time slot burst length is three time slots) as the first instance of multi-slot burst communication. The first three time slots may be signaled in the IUC response message using the improved TRIV indication discussed above (e.g., starting time slot and time slot burst length in the time domain, or both), the improved FRIV indication discussed above (e.g., starting RB and number of RB sets in the frequency domain, such as using an (X, Y) indication feature), or both. The X portion of the FRIV indication may be used to indicate the interleaving of the resource combination (e.g., an interleaving pattern frequency configuration).

[0135] The second resource combination 310 may be indicated relative to the reference time slot 315 using a time slot offset 320. Similar to the first resource combination 305, the second resource combination 310 may be indicated using a second TRIV or FRIV field in the IUC response message. The second TRIV or FRIV field may be an absolute TRIV, or the FRIV indication may be signaled for the first resource combination 305 (e.g., relative to the reference time slot 315).

[0136] Figure 4An example of a resource configuration 400 for supporting IUC for a sidelink in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is illustrated. The resource configuration 400 may implement aspects of the wireless communication system 100 and / or 200 and / or aspects of the resource configuration 300. Aspects of the resource configuration 400 may be implemented at or by a UE, which may be an example of a corresponding device described herein.

[0137] As discussed above, aspects of the technology described herein provide improved IUC exchanges between UEs. These improvements generally support IUC request messages, IUC response messages, or both, thereby indicating frequency and time resources at the RB set level, identifying timing (e.g., offset, delay, repetition, or interleaving) parameters for multi-slot burst communication between UEs, etc.

[0138] For example, the first UE may send or otherwise provide an IUC response message to the second UE. The IUC response message may be triggered by the occurrence of an event or condition, or may be triggered by an IUC request message received from the second UE. The IUC response message may carry or otherwise convey scheduling information. The scheduling information may include an RB set and an interleaving pattern frequency, a starting time slot and a time slot burst length, or both for multi-slot burst communication. In some examples, the IUC request message may indicate a requested RB set and an interleaving pattern frequency configuration, a requested starting time slot and a time slot burst length, or both for multi-slot burst communication.

[0139] Resource configuration 400 illustrates an example of resource scheduling for multi-slot burst communication, which can be signaled or otherwise based on IUC message exchanges. For example, an IUC response message can indicate a resource with a shorter CPR or a later starting position when overlapping with a reserved COT resource. Resource configuration 400 illustrates an example in which the indication of TRIV indicates the earliest starting slot for multi-slot burst communication.

[0140] For example, a sensing window 405 may be defined during which the UE may monitor one or more channels for channel measurements and performance procedures. Thus, during the sensing window 405, the UE may identify or otherwise determine which channels are most suitable for communication. After resource selection has been triggered, the UE may have a time period T1 during which the UE selects resources to be used from the resource selection window. The UE may select a resource with a starting position at T1>T0. Thus, the IUC response message may indicate the earliest starting time slot, which may improve the UE's resource selection for (non) preferred resources 410.

[0141] Figure 5A block diagram 500 of a device 505 supporting IUC for a sidelink in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The device 505 may be an example of aspects of a UE 115 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communication manager 520. The device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0142] The receiver 510 may provide 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 IUC for sidelinks in unlicensed or shared spectrum). The information may be communicated to other components of the device 505. The receiver 510 may utilize a single antenna or a collection of multiple antennas.

[0143] The transmitter 515 may provide means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 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 IUC for side links in unlicensed or shared spectrum). In some examples, the transmitter 515 may be co-located with the receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a collection of multiple antennas.

[0144] The communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of IUC for sidelink in unlicensed or shared spectrum as described herein. For example, the communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0145] In some examples, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). 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 that is configured to or otherwise supports components for performing the functions described herein. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0146] Additionally or alternatively, in some examples, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functionality described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0147] In some examples, communication manager 520 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 510, transmitter 515, or both. For example, communication manager 520 may receive information from receiver 510, transmit information to transmitter 515, or be integrated in conjunction with receiver 510, transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.

[0148] According to examples as disclosed herein, the communication manager 520 may support wireless communication at the first UE. For example, the communication manager 520 may be configured to or otherwise support a component for receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The communication manager 520 may be configured to or otherwise support a component for sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0149] Additionally or alternatively, according to examples as disclosed herein, the communication manager 520 may support wireless communication at the second UE. For example, the communication manager 520 may be configured to or otherwise support a component for sending an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The communication manager 520 may be configured to or otherwise support a component for receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0150] By including or configuring a communication manager 520 according to examples as described herein, the device 505 (e.g., a processor controlling the receiver 510, the transmitter 515, the communication manager 520, or a combination thereof or otherwise coupled thereto) can support techniques for improved IUC message content to support RB level resource signaling, start slot and slot burst length indication, and other improvements for scheduling multi-slot burst communications.

[0151] Figure 6 A block diagram 600 of a device 605 supporting IUC for a sidelink in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 or UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0152] The receiver 610 may provide 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 IUC for sidelinks in unlicensed or shared spectrum). The information may be communicated to other components of the device 605. The receiver 610 may utilize a single antenna or a collection of multiple antennas.

[0153] The transmitter 615 may provide means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 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 IUC for side links in unlicensed or shared spectrum). In some examples, the transmitter 615 may be co-located with the receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0154] The device 605 or its various components may be examples of components for performing various aspects of IUC for side links in unlicensed or shared spectrum as described herein. For example, the communication manager 620 may include an IUC request manager 625, an IUC response manager 630, or any combination thereof. The communication manager 620 may be an example of various aspects of the communication manager 520 as described herein. In some examples, the communication manager 620 or its various components may be configured to use or otherwise cooperate with the receiver 610, the transmitter 615, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 620 may receive information from the receiver 610, transmit information to the transmitter 615, or integrate with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0155] According to examples as disclosed herein, the communication manager 620 may support wireless communication at the first UE. The IUC request manager 625 may be configured to or otherwise support components for receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The IUC response manager 630 may be configured to or otherwise support components for sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0156] Additionally or alternatively, according to examples as disclosed herein, the communication manager 620 may support wireless communication at the second UE. The IUC request manager 625 may be configured to or otherwise support a component for sending an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The IUC response manager 630 may be configured to or otherwise support a component for receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0157] Figure 7A block diagram 700 of a communication manager 720 supporting IUC for a side link in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The communication manager 720 may be an example of aspects of the communication manager 520, the communication manager 620, or both as described herein. The communication manager 720 or its various components may be examples of components for performing various aspects of IUC for a side link in an unlicensed or shared spectrum as described herein. For example, the communication manager 720 may include an IUC request manager 725, an IUC response manager 730, an IUC request frequency manager 735, an IUC timing manager 740, an IUC response frequency manager 745, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0158] According to examples as disclosed herein, the communication manager 720 may support wireless communication at the first UE. The IUC request manager 725 may be configured to or otherwise support a component for receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The IUC response manager 730 may be configured to or otherwise support a component for sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0159] In some examples, the IUC request frequency manager 735 may be configured to or otherwise support components for identifying a first resource block set and interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for multi-slot burst communication between a first UE and a second UE based on an IUC request message, wherein the indicated resource block set and interleaving pattern frequency configuration are based on the first resource block set and interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are based on the first starting time slot and time slot burst length configuration.

[0160] In some examples, the first resource block set and interleaving pattern frequency configuration include a field indicating the number of consecutive resource block sets and the starting resource block set, or a bitmap, wherein each bit in the bitmap is configured to indicate the starting resource block set and the consecutive or non-consecutive resource block set. In some examples, the first resource block set and interleaving pattern frequency configuration include the number of consecutive or non-consecutive resource block sets and the starting resource block set, and the interleaving pattern used for the starting resource block set and the consecutive or non-consecutive resource block set. In some examples, the first starting time slot and time slot burst length configuration include a timing resource indication value that identifies the number of time slots included for multi-slot burst communication between the first UE and the second UE and the starting time slot.

[0161] In some examples, to support sending an IUC response message, the IUC timing manager 740 may be configured or otherwise support components for sending an indication of a starting time slot and a time slot burst length configuration in the IUC response message, the starting time slot and the time slot burst length configuration including a timing resource indication value identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and the starting time slot.

[0162] In some examples, the indication of the number of time slots included for multi-slot burst communication includes: a shared indication of the number of time slots included in each instance of multi-slot burst communication, a first indication of the number of time slots included in a first instance of multi-slot burst communication and a second indication of the number of time slots included in one or more additional instances of multi-slot burst communication, or a separate indication of the number of time slots included for each instance of multi-slot burst communication. In some examples, the indication of the number of time slots included for multi-slot burst communication includes one or more fields indicating the number of time slots included for multi-slot burst communication, wherein each of the one or more fields has a shared field length or a different field length. In some examples, the indication of the timing resource indication value includes the earliest starting time slot for multi-slot burst communication.

[0163] In some examples, to support sending an IUC response message, the IUC response frequency manager 745 may be configured or otherwise support components for sending an indication of a resource block set and an interleaving pattern frequency configuration in the IUC response message, the resource block set and the interleaving pattern frequency configuration including the number of contiguous or non-contiguous resource block sets and the starting resource block set, and the interleaving pattern for the starting resource block set and the contiguous or non-contiguous resource block sets.

[0164] In some examples, the indication of the interleaving pattern includes an interleaving pattern for a starting interleaving pattern for a first instance of a multi-slot burst communication, and a shared offset value identifying an offset between each instance of the multi-slot burst communication. In some examples, the indication of the interleaving pattern includes a bitmap, wherein each bit in the bitmap is configured to identify the starting interleaving pattern for the first instance of the multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

[0165] Additionally or alternatively, according to examples as disclosed herein, the communication manager 720 may support wireless communication at the second UE. In some examples, the IUC request manager 725 may be configured to or otherwise support a component for sending an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. In some examples, the IUC response manager 730 may be configured to or otherwise support a component for receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0166] In some examples, the IUC request frequency manager 735 may be configured to or otherwise support components for identifying a first resource block set and interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for multi-slot burst communication between a first UE and a second UE based on an IUC request message, wherein the indicated resource block set and interleaving pattern frequency configuration are based on the first resource block set and interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are based on the first starting time slot and time slot burst length configuration.

[0167] In some examples, the first resource block set and interleaving pattern frequency configuration include a field indicating the number of consecutive resource block sets and the starting resource block set, or a bitmap, wherein each bit in the bitmap is configured to indicate the starting resource block set and the consecutive or non-consecutive resource block set. In some examples, the first resource block set and interleaving pattern frequency configuration include the number of consecutive or non-consecutive resource block sets and the starting resource block set, and the interleaving pattern used for the starting resource block set and the consecutive or non-consecutive resource block set. In some examples, the first starting time slot and time slot burst length configuration include a timing resource indication value that identifies the number of time slots included for multi-slot burst communication between the first UE and the second UE and the starting time slot.

[0168] In some examples, the IUC timing manager 740 may be configured to or otherwise support components for identifying an indication of a starting time slot and a time slot burst length configuration based on the IUC response message, the starting time slot and the time slot burst length configuration including a timing resource indication value identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and the starting time slot.

[0169] In some examples, the indication of the number of time slots included for multi-slot burst communication includes: a shared indication of the number of time slots included in each instance of multi-slot burst communication, a first indication of the number of time slots included in a first instance of multi-slot burst communication and a second indication of the number of time slots included in one or more additional instances of multi-slot burst communication, or a separate indication of the number of time slots included for each instance of multi-slot burst communication.

[0170] In some examples, the indication of the number of time slots included for multi-slot burst communication includes one or more fields indicating the number of time slots included for multi-slot burst communication, wherein each of the one or more fields has a shared field length or a different field length. In some examples, the indication of the timing resource indication value includes the earliest starting time slot for multi-slot burst communication.

[0171] In some examples, the IUC response frequency manager 745 may be configured to or otherwise support components for identifying an indication of a resource block set and an interleaving pattern frequency configuration based at least in part on the IUC response message, the resource block set and the interleaving pattern frequency configuration including a number of contiguous or non-contiguous resource block sets and a starting resource block set, and an interleaving pattern for the starting resource block set and the contiguous or non-contiguous resource block sets.

[0172] In some examples, the indication of the interleaving pattern includes an interleaving pattern for a starting interleaving pattern for a first instance of a multi-slot burst communication, and a shared offset value identifying an offset between each instance of the multi-slot burst communication. In some examples, the indication of the interleaving pattern includes a bitmap, wherein each bit in the bitmap is configured to identify the starting interleaving pattern for the first instance of the multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

[0173] Figure 8A diagram of a system 800 including a device 805 supporting IUC for a sidelink in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The device 805 may be an example of a device 505, a device 605, or a UE 115 as described herein, or include components thereof. The device 805 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, a memory 830, a code 835, and a processor 840. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 845).

[0174] I / O controller 810 can manage input signals and output signals of device 805. I / O controller 810 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 810 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 810 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 810 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 810 may be implemented as part of a processor such as processor 840. In some cases, a user may interact with device 805 via I / O controller 810 or via hardware components controlled by I / O controller 810.

[0175] In some cases, the device 805 may include a single antenna 825. However, in some other cases, the device 805 may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bidirectionally via one or more antennas 825, wired or wireless links as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 815 may also include a modem for: modulating packets, providing the modulated packets to one or more antennas 825 for transmission; and demodulating packets received from one or more antennas 825. The transceiver 815 or the transceiver 815 and one or more antennas 825 may be examples of transmitters 515, transmitters 615, receivers 510, receivers 610, or any combination thereof or components thereof as described herein.

[0176] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed by the processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 830 may also include, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0177] The processor 840 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 840 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 830) to enable the device 805 to perform various functions (e.g., functions or tasks supporting IUC for a side link in an unlicensed or shared spectrum). For example, the device 805 or a component of the device 805 may include a processor 840 and a memory 830 coupled to or coupled to the processor 840, and the processor 840 and the memory 830 are configured to perform the various functions described herein.

[0178] According to examples as disclosed herein, the communication manager 820 may support wireless communication at the first UE. For example, the communication manager 820 may be configured to or otherwise support a component for receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The communication manager 820 may be configured to or otherwise support a component for sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of the following: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0179] Additionally or alternatively, according to examples as disclosed herein, the communication manager 820 may support wireless communication at the second UE. For example, the communication manager 820 may be configured to or otherwise support a component for sending an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The communication manager 820 may be configured to or otherwise support a component for receiving an IUC response message from the first UE including scheduling information, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE.

[0180] By including or configuring a communication manager 820 according to examples as described herein, the device 805 can support techniques for improved IUC message content to support RB level resource signaling, start slot and slot burst length indication, and other improvements to schedule multi-slot burst communications.

[0181] In some examples, the communication manager 820 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 815, one or more antennas 825, or any combination thereof. Although the communication manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 820 may be supported or performed by the processor 840, the memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions that are executable by the processor 840 to cause the device 805 to perform various aspects of IUC for a sidelink in an unlicensed or shared spectrum as described herein, or the processor 840 and the memory 830 may be otherwise configured to perform or support such operations.

[0182] Fig. 9 A flow chart illustrating a method 900 for supporting IUC for a side link in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The operations of the method 900 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 900 may be implemented by a UE or components thereof as described herein. Figures 1 to 8 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0183] At 905, the method may include: receiving an IUC request message from the second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The operations of 905 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 905 may be performed as described in reference to Figure 7 The IUC request manager 725 is used to execute.

[0184] At 910, the method may include: sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE. The operations of 910 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 910 may be performed as described in reference to Figure 7 The IUC response manager 730 is used to execute.

[0185] Fig.10 A flow chart illustrating a method 1000 for supporting IUC for a side link in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The operations of the method 1000 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 1000 may be implemented by a UE or components thereof as described herein. Figures 1 to 8 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0186] At 1005, the method may include: receiving an IUC request message from the second UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The operations of 1005 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed as described in reference to Figure 7 The IUC request manager 725 is used to execute.

[0187] At 1010, the method may include: identifying, based on the IUC request message, a first resource block set and an interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for multi-slot burst communication between the first UE and the second UE, wherein the indicated resource block set and the interleaving pattern frequency configuration are based on the first resource block set and the interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are based on the first starting time slot and time slot burst length configuration. The operations of 1010 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1010 may be performed as described in reference to Figure 7The IUC requests the frequency manager 735 to execute.

[0188] At 1015, the method may include: sending an IUC response message including scheduling information to the second UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE. The operations of 1015 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1015 may be performed as described in reference to Figure 7 The IUC response manager 730 is used to execute.

[0189] Fig.11 A flow chart illustrating a method 1100 for supporting IUC for a side link in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The operations of the method 1100 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 1100 may be implemented by a UE or components thereof as described herein. Figures 1 to 8 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0190] At 1105, the method may include: sending an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The operations of 1105 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed as described in reference to Figure 7 The IUC request manager 725 is used to execute.

[0191] At 1110, the method may include: receiving an IUC response message including scheduling information from the first UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE. The operations of 1110 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed as described in reference to Figure 7 The IUC response manager 730 is used to execute.

[0192] Fig.12A flow chart illustrating a method 1200 for supporting IUC for a side link in an unlicensed or shared spectrum according to one or more aspects of the present disclosure is shown. The operations of the method 1200 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 1200 may be implemented by a UE or components thereof as described herein. Figures 1 to 8 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0193] At 1205, the method may include: sending an IUC request message from the first UE, the IUC request message identifying a request for resource scheduling information for the first UE, the second UE, or both. The operations of 1205 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed as described in reference to Figure 7 The IUC request manager 725 is used to execute.

[0194] At 1210, the method may include: receiving an IUC response message including scheduling information from the first UE, the scheduling information including an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for multi-slot burst communication between the first UE and the second UE. The operations of 1210 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed as described in reference to Figure 7 The IUC response manager 730 is used to execute.

[0195] At 1215, the method may include: identifying an indication of a starting time slot and a time slot burst length configuration based on the IUC response message, the starting time slot and the time slot burst length configuration including a timing resource indication value identifying a number of time slots included for multi-slot burst communication between the first UE and the second UE and a starting time slot. The operations of 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed as described in reference to Figure 7 The IUC timing manager 740 is used to execute.

[0196] The following provides an overview of various aspects of the disclosure:

[0197] Aspect 1: A method for wireless communication at a first UE, the method comprising: receiving an IUC request message from a second UE, the IUC request message identifying a request for resource scheduling information of the first UE, the second UE, or both; and sending an IUC response message including the scheduling information to the second UE, the scheduling information including an indication of one or more of the following: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

[0198] Aspect 2: According to the method of Aspect 1, the method also includes: identifying a first RB set and an interleaving mode frequency configuration and a first starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE based at least in part on the IUC request message, wherein the indicated RB set and the interleaving mode frequency configuration are at least in part based on the first RB set and the interleaving mode frequency configuration, and the indicated starting time slot and time slot burst length configuration are at least in part based on the first starting time slot and time slot burst length configuration.

[0199] Aspect 3: A method according to Aspect 2, wherein the first RB set and the interleaving pattern frequency configuration include a field indicating the number of consecutive RB sets and the starting RB set, or a bitmap, wherein each bit in the bitmap is configured to indicate the starting RB set and consecutive or discontinuous RB sets.

[0200] Aspect 4: The method according to any one of Aspects 2 to 3, wherein the first RB set and interleaving pattern frequency configuration includes the number of consecutive or non-consecutive RB sets and a starting RB set, and an interleaving pattern for the starting RB set and consecutive or non-consecutive RB sets.

[0201] Aspect 5: A method according to any one of Aspects 2 to 4, wherein the first starting time slot and time slot burst length configuration includes an identifier of the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

[0202] Aspect 6: A method according to any one of Aspects 1 to 5, wherein sending the IUC response message includes: sending the indication of the starting time slot and time slot burst length configuration in the IUC response message, the starting time slot and time slot burst length configuration including an identifier of the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

[0203] Aspect 7: A method according to Aspect 6, wherein the indication of the number of time slots included for multi-slot burst communication includes: a shared indication of the number of time slots included in each instance of the multi-slot burst communication, a first indication of the number of time slots included in a first instance of the multi-slot burst communication and a second indication of the number of time slots included in one or more additional instances of the multi-slot burst communication, or a separate indication of the number of time slots included for each instance of the multi-slot burst communication.

[0204] Aspect 8: A method according to any one of Aspects 6 to 7, wherein the indication of the number of time slots included for the multi-slot burst communication includes one or more fields indicating the number of time slots included for the multi-slot burst communication, wherein each of the one or more fields has a shared field length or a different field length.

[0205] Aspect 9: The method according to any one of aspects 6 to 8, wherein the indication of the timing resource indication value comprises an earliest starting time slot for the multi-slot burst communication.

[0206] Aspect 10: A method according to any one of Aspects 1 to 9, wherein sending the IUC response message includes: sending the indication of the RB set and interleaving pattern frequency configuration in the IUC response message, the RB set and interleaving pattern frequency configuration including the number of consecutive or discontinuous RB sets and the starting RB set, and the interleaving pattern used for the starting RB set and the consecutive or discontinuous RB set.

[0207] Aspect 11: A method according to aspect 10, wherein the indication of the interleaving pattern includes an interleaving pattern of a starting interleaving pattern for a first instance of the multi-slot burst communication, and a shared offset value identifying an offset between each instance of the multi-slot burst communication.

[0208] Aspect 12: A method according to any one of Aspects 10 to 11, wherein the indication of the interleaving pattern comprises a bitmap, wherein each bit in the bitmap is configured to identify a starting interleaving pattern for a first instance of the multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

[0209] Aspect 13: A method for wireless communication at a second UE, the method comprising: sending an IUC request message from a first UE, the IUC request message identifying a request for resource scheduling information of the first UE, the second UE, or both; and receiving an IUC response message including the scheduling information from the first UE, the scheduling information including an indication of one or more of: an RB set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

[0210] Aspect 14: According to the method of Aspect 13, the method also includes: identifying a first RB set and an interleaving mode frequency configuration and a first starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE based at least in part on the IUC request message, wherein the indicated RB set and the interleaving mode frequency configuration are at least in part based on the first RB set and the interleaving mode frequency configuration, and the indicated starting time slot and time slot burst length configuration are at least in part based on the first starting time slot and time slot burst length configuration.

[0211] Aspect 15: A method according to Aspect 14, wherein the first RB set and interleaving pattern frequency configuration includes a field indicating the number of consecutive RB sets and the starting RB set, or a bitmap, wherein each bit in the bitmap is configured to indicate the starting RB set and consecutive or discontinuous RB sets.

[0212] Aspect 16: A method according to any one of Aspects 14 to 15, wherein the first RB set and interleaving pattern frequency configuration includes the number of consecutive or non-consecutive RB sets and a starting RB set, and an interleaving pattern for the starting RB set and consecutive or non-consecutive RB sets.

[0213] Aspect 17: A method according to any one of Aspects 14 to 16, wherein the first starting time slot and time slot burst length configuration includes an identifier of the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

[0214] Aspect 18: [Proposal 2] According to any one of Aspects 13 to 17, the method also includes: identifying the indication of the starting time slot and time slot burst length configuration based at least in part on the IUC response message, the starting time slot and time slot burst length configuration including identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

[0215] Aspect 19: A method according to Aspect 18, wherein the indication of the number of time slots included for multi-slot burst communication includes: a shared indication of the number of time slots included in each instance of the multi-slot burst communication, a first indication of the number of time slots included in a first instance of the multi-slot burst communication and a second indication of the number of time slots included in one or more additional instances of the multi-slot burst communication, or a separate indication of the number of time slots included for each instance of the multi-slot burst communication.

[0216] Aspect 20: A method according to any one of Aspects 18 to 19, wherein the indication of the number of time slots included for the multi-slot burst communication includes one or more fields indicating the number of time slots included for the multi-slot burst communication, wherein each of the one or more fields has a shared field length or a different field length.

[0217] Aspect 21: The method according to any one of aspects 18 to 20, wherein the indication of the timing resource indication value comprises an earliest starting time slot for the multi-slot burst communication.

[0218] Aspect 22: According to the method described in any one of Aspects 13 to 21, the method further includes: identifying the indication of the RB set and the interleaving pattern frequency configuration based at least in part on the IUC response message, wherein the RB set and the interleaving pattern frequency configuration include the number of continuous or discontinuous RB sets and the starting RB set, and the interleaving pattern used for the starting RB set and the continuous or discontinuous RB set.

[0219] Aspect 23: A method according to aspect 22, wherein the indication of the interleaving pattern includes an interleaving pattern of a starting interleaving pattern for a first instance of the multi-slot burst communication, and a shared offset value identifying an offset between each instance of the multi-slot burst communication.

[0220] Aspect 24: A method according to any one of Aspects 22 to 23, wherein the indication of the interleaving pattern comprises a bitmap, wherein each bit in the bitmap is configured to identify a starting interleaving pattern for a first instance of the multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

[0221] Aspect 25: An apparatus for wireless communication at a first UE, the apparatus comprising: a processor; a memory, the memory being in electronic communication with the processor; and instructions, the instructions being stored in the memory, wherein the instructions are executable by the processor to perform a method according to any one of Aspects 1 to 12.

[0222] Aspect 26: An apparatus for wireless communication at a first UE, the apparatus comprising: at least one component for performing the method according to any one of aspects 1 to 12.

[0223] Aspect 27: A non-transitory computer-readable medium storing a code for wireless communication at a first UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 1 to 12.

[0224] Aspect 28: An apparatus for wireless communication at a second UE, the apparatus comprising: a processor; a memory, the memory being in electronic communication with the processor; and instructions, the instructions being stored in the memory, wherein the instructions are executable by the processor to perform a method according to any one of Aspects 13 to 24.

[0225] Aspect 29: An apparatus for wireless communication at a second UE, the apparatus comprising at least one component for performing a method according to any one of aspects 13 to 24.

[0226] Aspect 30: A non-transitory computer-readable medium storing a code for wireless communication at a second UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 13 to 24.

[0227] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0228] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication 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, and other systems and radio technologies not explicitly mentioned herein.

[0229] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0230] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, DSP, ASIC, CPU, 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 an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0231] 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 one or more instructions or codes of a computer-readable medium, or sent using a computer-readable medium. Other examples and specific implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that the various parts of the functions are implemented at different physical locations.

[0232] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that promotes computer program to be transmitted from one position to another position.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.By way of example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing desired program code parts and any other non-transient medium that can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. As used herein, disks and discs include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks can reproduce data magnetically, and discs can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0233] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items introduced by a phrase such as "at least one of..." or "one or more of...") indicates an inclusive list, so 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). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on".

[0234] The term "determining" encompasses various actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, etc. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.

[0235] In the drawings, similar components or features may have the same reference label. In addition, components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label, regardless of the second or other subsequent reference labels.

[0236] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." The specific embodiments include specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0237] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a first user equipment (UE), the apparatus comprising: processor; a memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by the processor to: receiving an inter-UE coordination request message from a second UE, the inter-UE coordination request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and An inter-UE coordination response message including the scheduling information is sent to the second UE, wherein the scheduling information includes an indication of one or more of the following: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

2. The apparatus of claim 1 , wherein the instructions are further executable by the processor to: A first resource block set and interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE are identified at least in part based on the inter-UE coordination request message, wherein the indicated resource block set and interleaving pattern frequency configuration are at least in part based on the first resource block set and interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are at least in part based on the first starting time slot and time slot burst length configuration.

3. The apparatus of claim 2, wherein the first resource block set and the interleaving pattern frequency configuration comprises a field indicating the number of consecutive resource block sets and the starting resource block set, or a bitmap, wherein each bit in the bitmap is configured to indicate the starting resource block set and consecutive or non-consecutive resource block sets.

4. The apparatus of claim 2, wherein the first resource block set and interleaving pattern frequency configuration comprises the number of consecutive or non-consecutive resource block sets and a starting resource block set, and an interleaving pattern for the starting resource block set and consecutive or non-consecutive resource block sets.

5. The apparatus of claim 2, wherein the first starting time slot and time slot burst length configuration comprises a timing resource indicator value identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and the starting time slot.

6. The apparatus of claim 1, wherein the instructions executable by the processor to send the inter-UE coordination response message comprise instructions executable by the processor to: The indication of the starting time slot and time slot burst length configuration is sent in the inter-UE coordination response message, and the starting time slot and time slot burst length configuration includes an identifier of the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

7. The apparatus of claim 6, wherein the indication of the number of time slots included for multi-slot burst communication comprises: a shared indication of the number of time slots included in each instance of the multi-slot burst communication, a first indication of the number of time slots included in a first instance of the multi-slot burst communication and a second indication of the number of time slots included in one or more additional instances of the multi-slot burst communication, or a separate indication of the number of time slots included for each instance of the multi-slot burst communication.

8. The apparatus of claim 6, wherein the indication of the number of time slots included for the multi-slot burst communication comprises one or more fields indicating the number of time slots included for the multi-slot burst communication, wherein each of the one or more fields has a shared field length or a different field length.

9. The apparatus of claim 6, wherein the indication of the timing resource indicator value comprises an earliest starting time slot for the multi-slot burst communication.

10. The apparatus of claim 1, wherein the instructions executable by the processor to send the inter-UE coordination response message comprise instructions executable by the processor to: The indication of the resource block set and interleaving pattern frequency configuration is sent in the inter-UE coordination response message, and the resource block set and interleaving pattern frequency configuration include the number of consecutive or non-consecutive resource block sets and the starting resource block set, and the interleaving pattern used for the starting resource block set and the consecutive or non-consecutive resource block sets.

11. The apparatus of claim 10, wherein the indication of the interleaving pattern comprises an interleaving pattern of a starting interleaving pattern for a first instance of the multi-slot burst communication and a shared offset value identifying an offset between each instance of the multi-slot burst communication.

12. The apparatus of claim 10 , wherein the indication of the interleaving pattern comprises a bitmap, wherein each bit in the bitmap is configured to identify a starting interleaving pattern for a first instance of the multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

13. An apparatus for wireless communication at a second user equipment (UE), the apparatus comprising: processor; a memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by the processor to: sending an inter-UE coordination request message from a first UE, the inter-UE coordination request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and An inter-UE coordination response message including the scheduling information is received from the first UE, wherein the scheduling information includes an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

14. The apparatus of claim 13, wherein the instructions are further executable by the processor to: A first resource block set and interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE are identified at least in part based on the inter-UE coordination request message, wherein the indicated resource block set and interleaving pattern frequency configuration are at least in part based on the first resource block set and interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are at least in part based on the first starting time slot and time slot burst length configuration.

15. The apparatus of claim 14, wherein the first resource block set and interleaving pattern frequency configuration comprises a field indicating the number of consecutive resource block sets and the starting resource block set, or a bitmap, wherein each bit in the bitmap is configured to indicate the starting resource block set and consecutive or non-consecutive resource block sets.

16. The apparatus of claim 14, wherein the first resource block set and interleaving pattern frequency configuration comprises a number of consecutive or non-consecutive resource block sets and a starting resource block set, and an interleaving pattern for the starting resource block set and consecutive or non-consecutive resource block sets.

17. The apparatus of claim 14, wherein the first starting time slot and time slot burst length configuration comprises a timing resource indicator value identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and the starting time slot.

18. The apparatus of claim 13, wherein the instructions are further executable by the processor to: The indication of the starting time slot and time slot burst length configuration is identified at least in part based on the inter-UE coordination response message, and the starting time slot and time slot burst length configuration includes identifying the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

19. The apparatus of claim 18, wherein the indication of the number of time slots included for multi-slot burst communication comprises: a shared indication of the number of time slots included in each instance of the multi-slot burst communication, a first indication of the number of time slots included in a first instance of the multi-slot burst communication and a second indication of the number of time slots included in one or more additional instances of the multi-slot burst communication, or a separate indication of the number of time slots included for each instance of the multi-slot burst communication.

20. The apparatus of claim 18, wherein the indication of the number of time slots included for the multi-slot burst communication comprises one or more fields indicating the number of time slots included for the multi-slot burst communication, wherein each of the one or more fields has a shared field length or a different field length.

21. The apparatus of claim 18, wherein the indication of the timing resource indicator value comprises an earliest starting time slot for the multi-slot burst communication.

22. The apparatus of claim 13, wherein the instructions are further executable by the processor to: The indication of the resource block sets and interleaving pattern frequency configuration is identified at least in part based on the inter-UE coordination response message, and the resource block sets and interleaving pattern frequency configuration include the number of consecutive or non-consecutive resource block sets and the starting resource block set, and the interleaving pattern used for the starting resource block set and the consecutive or non-consecutive resource block sets.

23. The apparatus of claim 22, wherein the indication of the interleaving pattern comprises an interleaving pattern of a starting interleaving pattern for a first instance of the multi-slot burst communication and a shared offset value identifying an offset between each instance of the multi-slot burst communication.

24. The apparatus of claim 22, wherein the indication of the interleaving pattern comprises a bitmap, wherein each bit in the bitmap is configured to identify a starting interleaving pattern for a first instance of the multi-slot burst communication, and a separate offset value for each subsequent instance of the multi-slot burst communication identifying an offset between each instance.

25. A method for wireless communication at a first user equipment (UE), the method comprising: receiving an inter-UE coordination request message from a second UE, the inter-UE coordination request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and An inter-UE coordination response message including the scheduling information is sent to the second UE, wherein the scheduling information includes an indication of one or more of the following: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

26. The method according to claim 25, further comprising: A first resource block set and interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE are identified at least in part based on the inter-UE coordination request message, wherein the indicated resource block set and interleaving pattern frequency configuration are at least in part based on the first resource block set and interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are at least in part based on the first starting time slot and time slot burst length configuration.

27. The method according to claim 25, wherein sending the inter-UE coordination response message comprises: The indication of the starting time slot and time slot burst length configuration is sent in the inter-UE coordination response message, and the starting time slot and time slot burst length configuration includes an identifier of the number of time slots included for multi-slot burst communication between the first UE and the second UE and a timing resource indication value of the starting time slot.

28. The method of claim 25, wherein sending the inter-UE coordination response message comprises: The indication of the resource block set and interleaving pattern frequency configuration is sent in the inter-UE coordination response message, and the resource block set and interleaving pattern frequency configuration include the number of consecutive or non-consecutive resource block sets and the starting resource block set, and the interleaving pattern used for the starting resource block set and the consecutive or non-consecutive resource block sets.

29. A method for wireless communication at a second user equipment (UE), the method comprising: sending an inter-UE coordination request message from a first UE, the inter-UE coordination request message identifying a request for resource scheduling information for the first UE, the second UE, or both; and An inter-UE coordination response message including the scheduling information is received from the first UE, wherein the scheduling information includes an indication of one or more of: a resource block set and an interleaving pattern frequency configuration for multi-slot burst communication between the first UE and the second UE, or a starting time slot and a time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE.

30. The method according to claim 29, further comprising: A first resource block set and interleaving pattern frequency configuration and a first starting time slot and time slot burst length configuration for the multi-slot burst communication between the first UE and the second UE are identified at least in part based on the inter-UE coordination request message, wherein the indicated resource block set and interleaving pattern frequency configuration are at least in part based on the first resource block set and interleaving pattern frequency configuration, and the indicated starting time slot and time slot burst length configuration are at least in part based on the first starting time slot and time slot burst length configuration.

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