Inter-user equipment coordination for resource management

Abstract

Methods, systems, and devices for wireless communication are described. A receiving user equipment (UE) may broadcast a message containing inter-UE coordination (IUC) information using multiple beams. The IUC information transmitted on each beam may be different for each beam of the receiving UE. For example, each piece of IUC information may contain a different preferred or non-preferred resource for a receiving UE to receive a transmission from a transmitting UE. The transmitting UE may receive a message including the IUC information from one of the beams of the receiving UE, and transmit a signal using a resource based on the IUC information included in the received message. In some examples, a transmitting UE may transmit a channel busy ratio (CBR) request to a receiving UE. The CBR request may specify a transmission configuration indicator (TCI) state, spatial relationship, spatial domain filter, or beam from which the receiving UE is to measure the CBR.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. patent application No. 17 / 943,157, filed by Ryu et al. on September 12, 2022, and entitled “INTER-USE REQUIPMENT COORDINATION FOR RESOURCE MANAGEMENT”; the above application is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following relates to wireless communications including inter-user equipment coordination (IUC) for resource management. 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, improved 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 for a communication device (which may be referred to as a user equipment (UE)).

[0005] A UE may communicate directly with another UE via sidelink communications (eg, using a device-to-device communication link). Summary of the invention

[0006] The described techniques relate to improved methods, systems, devices, and apparatuses that support inter-user equipment coordination (IUC) for resource management. For example, the described techniques provide for a first user equipment (UE) to send an IUC message on one or more beams supported by the first UE, the IUC message indicating a preferred set of resources associated with the beam, the preferred set of resources being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure. In some cases, the IUC message may include an indication of a channel busy ratio (CBR) measurement. The first UE may receive sidelink control signaling from a second UE on one of the one or more beams based on a preferred set of resources associated with the beam and, in some examples, based on the CBR measurement. The first UE may establish or modify a connection between the first UE and the second UE based on the random access procedure or the beam failure recovery procedure, at least in part based on the sidelink control signaling.

[0007] An apparatus for wireless communication at a first UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to perform the following operations: sending an inter-UE coordination message indicating a preferred resource set associated with the beam on each corresponding beam of one or more beams supported by the first UE, the preferred resource set being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; receiving sidelink control signaling from a second UE on a beam of the one or more beams according to the preferred resource set associated with the beam; and establishing or modifying a connection between the first UE and the second UE according to the random access procedure or the beam failure recovery procedure based on the sidelink control signaling.

[0008] A method for wireless communication at a first user equipment (UE) is described. The method may include: sending an inter-UE coordination message on each corresponding beam of one or more beams supported by the first UE, the inter-UE coordination message indicating a preferred set of resources associated with the beam, the preferred set of resources being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; receiving the sidelink control signaling from a second UE on a beam of the one or more beams according to the set of preferred resources associated with the beam; and establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling according to the random access procedure or the beam failure recovery procedure.

[0009] Another apparatus for wireless communication at a first UE is described. The apparatus may include: a unit for sending an inter-UE coordination message on each corresponding beam of one or more beams supported by the first UE, the inter-UE coordination message indicating a preferred set of resources associated with the beam, the preferred set of resources being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; a unit for receiving the sidelink control signaling from a second UE on a beam of the one or more beams according to the set of preferred resources associated with the beam; and a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling according to the random access procedure or the beam failure recovery procedure.

[0010] 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: sending an inter-UE coordination message on each corresponding beam of one or more beams supported by the first UE, the inter-UE coordination message indicating a preferred resource set associated with the beam, the preferred resource set used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; receiving the sidelink control signaling from a second UE on a beam of the one or more beams according to the set of preferred resources associated with the beam; and establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling according to the random access procedure or the beam failure recovery procedure.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the inter-UE coordination message may include operations, features, units, or instructions for performing the following operations: sending an inter-UE coordination request, the inter-UE coordination request instructing the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: receiving an indication of the one or more preferred resources in the second set of preferred resources in response to the inter-UE coordination request, wherein the sidelink control signaling includes the indication; and sending the response to the sidelink control signaling based on the one or more preferred resources in the second set of preferred resources.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, establishing or modifying the connection may include operations, features, units, or instructions for performing the following operations: in response to the sidelink control signaling, sending a beam failure recovery response associated with the beam failure recovery process or a random access response associated with the random access process, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: receiving a request for the inter-UE coordination message, wherein sending the inter-UE coordination message may be in response to the request.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: receiving sidelink control information from one or more UEs indicating scheduling information for the one or more UEs, wherein the inter-UE coordination message indicates an updated preferred resource set based on the scheduling information for the one or more UEs.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the inter-UE coordination message may be sent to the second UE on the beam based on a spatial filter, and receiving the sidelink control signaling may be based on the spatial filter.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the inter-UE coordination message may include operations, features, units, or instructions for performing the following operations: sending synchronization information associated with the first UE, system information associated with the first UE, or both on each corresponding beam in the set of multiple beams supported by the first UE.

[0018] An apparatus for wireless communication at a first UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to perform the following operations: send an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred resource set associated with the beam for receiving sidelink signaling; and receive the sidelink signaling from a second UE on a beam of the one or more beams according to the preferred resource set associated with the beam.

[0019] A method for wireless communication at a first UE is described. The method may include sending an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred resource set associated with the beam for receiving sidelink signaling; and receiving the sidelink signaling from a second UE on a beam of the one or more beams according to the preferred resource set associated with the beam.

[0020] Another apparatus for wireless communication at a first UE is described. The apparatus may include: means for sending an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred resource set associated with the beam for receiving sidelink signaling; and means for receiving the sidelink signaling from a second UE on a beam of the one or more beams according to the preferred resource set associated with the beam.

[0021] 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: send an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred resource set associated with the beam for receiving sidelink signaling; and receive the sidelink signaling from a second UE on a beam of the one or more beams according to the preferred resource set associated with the beam.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the sidelink signaling may be associated with a random access procedure or a beam failure recovery procedure.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the channel busy ratio measurement may be associated with the one or more beams.

[0024] Some examples of methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving a request for the channel busy ratio measurement, wherein sending the channel busy ratio measurement may be based on the request.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the request for the channel busy ratio measurement indicates a transmission configuration indicator state for the one or more beams, a spatial relationship for the one or more beams, a spatial domain filter for the one or more beams, the one or more beams, or any combination thereof.

[0026] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving a request for the inter-UE coordination message, wherein sending the channel busy ratio measurement may be based on the request.

[0027] Some examples of methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving a data transmission based on one or more transmission parameters corresponding to the channel busy ratio measurement.

[0028] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for performing the following operations: performing the channel busy ratio measurement based on the preferred resource set.

[0029] An apparatus for wireless communication at a second UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to perform the following operations: receiving an inter-UE coordination message indicating a preferred resource set associated with a beam for sending sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; sending the sidelink control signaling to a first UE on the beam according to the preferred resource set associated with the beam; and establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0030] A method for wireless communication at a second UE is described. The method may include: receiving, on a beam for sending sidelink control signaling associated with a random access procedure or a beam failure recovery procedure, an inter-UE coordination message indicating a preferred resource set associated with the beam; sending, on the beam, the sidelink control signaling to a first UE according to the preferred resource set associated with the beam; and establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0031] Another apparatus for wireless communication at a second UE is described. The apparatus may include: a unit for receiving, on a beam for sending sidelink control signaling associated with a random access procedure or a beam failure recovery procedure, an inter-UE coordination message indicating a preferred resource set associated with the beam; a unit for sending the sidelink control signaling to a first UE on the beam according to the preferred resource set associated with the beam; and a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0032] 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: receiving an inter-UE coordination message indicating a preferred resource set associated with a beam for sending sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; sending the sidelink control signaling to a first UE on the beam according to the preferred resource set associated with the beam; and establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the inter-UE coordination message may include operations, features, units, or instructions for performing the following operations: receiving an inter-UE coordination request, the inter-UE coordination request indicating that the second UE provides one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: sending an indication of the one or more preferred resources in the second set of preferred resources in response to the inter-UE coordination request, wherein the sidelink control signaling includes the indication; and receiving the response to the sidelink control signaling based on the one or more preferred resources in the second set of preferred resources.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, establishing or modifying the connection may include operations, features, units, or instructions for performing the following operations: in response to the sidelink control signaling, receiving a beam failure recovery response associated with the beam failure recovery process or a random access response associated with the random access process, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

[0036] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for sending a request for the inter-UE coordination message, wherein receiving the inter-UE coordination message may be in response to the request.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: sending sidelink control information to a first UE indicating scheduling information for the first UE, wherein the inter-UE coordination message indicates an updated preferred resource set based on the scheduling information for the first UE.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the inter-UE coordination message may be received from the first UE on the beam based on a spatial filter, and the sidelink control signaling may be sent based on the spatial filter.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the inter-UE coordination message may include operations, features, units, or instructions for performing the following operations: receiving synchronization information associated with the first UE, system information associated with the first UE, or both on the beam.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the inter-UE coordination message may include operations, features, units, or instructions for performing the following operations: receiving a channel busy ratio measurement associated with the beam on the beam.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: sending a request for the channel busy ratio measurement for the beam, wherein receiving the channel busy ratio measurement may be based on the request.

[0042] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the request for the channel busy ratio measurement indicates a transmission configuration indicator state for the beam, a spatial relationship for the beam, a spatial domain filter for the beam, the beam, or any combination thereof.

[0043] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for sending a request for the inter-UE coordination message, wherein receiving the channel busy ratio measurement may be based on the request.

[0044] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for sending a data transmission on the beam based on one or more transmission parameters corresponding to the channel busy ratio measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 An example of a wireless communication system supporting inter-user equipment coordination (IUC) for resource management in accordance with one or more aspects of the present disclosure is shown.

[0046] Figure 2 An example of a wireless communication system supporting IUC for resource management in accordance with one or more aspects of the present disclosure is shown.

[0047] Figure 3 An example of a resource map supporting IUC for resource management in accordance with one or more aspects of the present disclosure is shown.

[0048] Figure 4 An example of a process flow supporting IUC for resource management in accordance with one or more aspects of the present disclosure is shown.

[0049] Figure 5 and Figure 6 A block diagram of a device supporting IUC for resource management according to one or more aspects of the present disclosure is shown.

[0050] Figure 7 A block diagram of a communication manager supporting IUC for resource management is shown in accordance with one or more aspects of the present disclosure.

[0051] Figure 8 A diagram of a system including a device supporting IUC for resource management is shown in accordance with one or more aspects of the present disclosure.

[0052] Figures 9 to 12 A flow chart illustrating a method of supporting IUC for resource management according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0053] In some wireless communication systems, the auxiliary information transmitted in the inter-user equipment coordination (IUC) message may be different, depending on which beam of the receiving user equipment (UE) is used for sidelink communication with the transmitting UE. In addition, or alternatively, the receiving UE may perform channel sensing to communicate with the transmitting UE, but the receiving UE may not be able to sense resource usage in the network area where the transmitting UE is located. This may cause beam pair establishment problems, and the receiving UE and the transmitting UE may select a relatively poor beam set for sidelink communication.

[0054] According to the examples disclosed herein, a receiving UE may broadcast a message containing IUC information using multiple beams of the receiving UE. In some examples, the IUC information in each message may be different so that each message may be specific to the beam of the receiving UE used to carry the message. For example, each IUC information may contain different preferred resources or non-preferred resources for use by the receiving UE to receive transmissions from the sending UE. The sending UE may receive a message containing IUC information from one of the beams of the receiving UE. The sending UE may send a signal (e.g., a random access channel (RACH) signal or a beam failure recovery (BFR) signal) using resources based on the IUC information contained in the received message. Therefore, the receiving UE and the sending UE may establish a beam pair based on the IUC information specific to the receiving beam used by the receiving UE.

[0055] In some examples, the sending UE may send a message for requesting a channel busy ratio (CBR) from the receiving UE. For example, the sending UE may send a request for IUC information to the receiving UE, the request including a request for CBR. In some examples, the message may specify a transmission configuration indicator (TCI) state, a spatial relationship, a spatial domain filter, or a beam according to which the receiving UE is to measure the CBR. The receiving UE may measure the CBR and send a message including IUC information, which may indicate the measured CBR. In some cases, the IUC information may include preferred resources or non-preferred resources of the receiving UE. The receiving UE may measure the CBR based on resources other than the preferred resources of the receiving UE or the non-preferred resources of the receiving UE. Therefore, the sending UE may obtain channel information from the busy area in which the receiving UE is operating.

[0056] Various aspects of the disclosure are first described in the context of a wireless communication system. Various aspects of the disclosure are also described in the context of resource diagrams and process flows. Various aspects of the disclosure are further illustrated by apparatus diagrams, system diagrams, and flow diagrams relating to IUC for resource management, and various aspects of the disclosure are described with reference to these diagrams.

[0057] Figure 1An example of a wireless communication system 100 supporting IUC for resource management according to one or more aspects of the present disclosure is shown. 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.

[0058] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may include devices of different forms or with different capabilities. In different examples, the network entities 105 may be referred to as network elements, mobile elements, radio access network (RAN) nodes, or network devices, among other nomenclatures. In some examples, the network entities 105 and the UEs 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) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the network entity 105 and the UEs 115 may support signal communications according to one or more radio access technologies (RATs).

[0059] 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, at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein can support communication with various types of devices, such as other UEs 115 or network entities 105, such as Figure 1 shown.

[0060] 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 other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosing UE 115, network entity 105, apparatus, device, computing system, or node, etc. For example, disclosing that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from the second node.

[0061] In some examples, the network entities 105 can communicate with the core network 130, or with each other, or both. For example, the network entities 105 can 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 can communicate with each other directly (e.g., directly between the network entities 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 can 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 link 120, the midhaul communication link 162, or the fronthaul communication link 168 can 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), other instances thereof, or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0062] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base station transceiver, a radio base station, a NR base station, an access point, a radio transceiver, a node B, an evolved node B (eNB), a next generation node B, or a gigabit node B (any of which may be referred to as a gNB), a 5G NB, a next generation eNB (ng-eNB), a home node B, a home evolved node B, 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, independent) 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).

[0063] In some examples, the network entity 105 can be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture), which can be configured to utilize a protocol stack 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 sponsored 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 central units (CU) 160, distributed units (DU) 165, radio units (RU) 170, RAN intelligent controllers (RIC) 175 (e.g., near real-time RIC (Near-RT RIC), non-real-time RIC (Non-RT RIC)), service management and orchestration (SMO) system 180, 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 at 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)).

[0064] The functional split between CU 160, DU 165, and RU 170 is flexible and can support different functions, depending on the functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack can be employed between CU 160 and DU 165 such that CU 160 can support one or more layers of a protocol stack and DU 165 can support one or more different layers of a protocol stack. In some examples, CU 160 can host upper protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functions 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) functions and signaling, and each may be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between the CU 160 and the DU 165, or the functional split between the DU 165 and the RU 170 can be within the protocol layer (e.g., some functions for the protocol layer can be performed by one of the CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by different functions in the CU 160, DU 165, or RU 170). The CU 160 can be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. The CU 160 can be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and the DU 165 can 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 according to interfaces (eg, channels) between layers of a protocol stack supported by the respective network entities 105 communicating via such communication links.

[0065] In a wireless communication system (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access can support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to the core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) can partially control each other. One or more IAB nodes 104 can be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 can be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) can 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 DU 165 coupled to the IAB donor. 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., the same antennas 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 a case, 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.

[0066] Where the techniques described herein are applied to the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture may be configured to support IUC for resource management, 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 decomposed RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0067] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where 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.

[0068] like Figure 1 As shown, the UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as network entities 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc.

[0069] The UE 115 and the network entity 105 can use resources associated with one or more carriers to wirelessly communicate with each other via one or more communication links 125 (e.g., access links). The term "carrier" can refer to a set of RF spectrum resources with a defined physical layer structure to support the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) 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 can 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 can support communication with the UE 115 using carrier aggregation or multi-carrier operation. According to the carrier aggregation configuration, the UE 115 can be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between a device and any portion (e.g., entity, sub-entity) of the network entity 105. For example, the terms "sending," "receiving," or "communicating," when referring to the network entity 105, may refer to any portion of the network entity 105 of the RAN (e.g., base station 140, CU 160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0070] 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 employing MCM techniques, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and the subcarrier spacing are inversely related. The amount 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 amount of resource elements (e.g., within the transmission duration) and a relatively higher modulation scheme order 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 used for communication with UE 115.

[0071] The time interval for the network entity 105 or the UE 115 may be expressed in multiples of a basic time unit, for example, T s =1 / (Δf max ·N f ) seconds sampling period, for its Δf max It can indicate 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 radio frame having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0072] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a 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 number of symbol periods (e.g., depending on the length of the cyclic prefix appended in front of each symbol period). In some wireless communication systems 100, a 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 ) sampling period. The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0073] A subframe, slot, mini-slot, or 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)).

[0074] According to various techniques, physical channels may be multiplexed using carriers for communication. For example, physical control channels and physical data channels for signaling may be multiplexed via downlink carriers 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 group of UEs 115. For example, one or more of UEs 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 a plurality of UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0075] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and, therefore, 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 various coverage areas 110 using the same or different radio access technologies.

[0076] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC). UE 115 can be designed to support ultra-reliable, low-latency or critical functions. Ultra-reliable communication can include private communication or group communication, and can be supported by one or more services (such as push-to-talk, video or data). Support for ultra-reliable, low-latency functions can include prioritization of services, and such services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency and ultra-reliable low-latency can be used interchangeably in this article.

[0077] In some examples, the UE 115 may be configured to support communication directly with other UEs 115 via 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 various aspects of such D2D communication configured by the network entity 105 (e.g., scheduled by the network entity 105). In some examples, one or more UEs 115 in such a group may be located 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.

[0078] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connection, 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 for managing access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity for routing packets to an external network or interconnecting to an external network (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of a 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 user plane entities, which may provide IP address allocation and other functions. The user plane entity may be connected to an IP service 150 for 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.

[0079] The wireless communication system 100 can operate using one or more frequency bands, which can range from 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, 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 in length from about 1 decimeter to 1 meter. 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 distances (e.g., less than 100 kilometers) compared to communications using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0080] The wireless communication system 100 can utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 can use unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band, using 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 entities 105 and UE 115 can use carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands can be based on a carrier aggregation configuration combined with component carriers operating using licensed bands (e.g., LAA). Operations using unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0081] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas, which may 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 beamforming 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 row and column set of antenna ports, which the network entity 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays, which may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0082] 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., network entity 105, UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals transmitted via antenna elements of an antenna array so that signals propagating in a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals transmitted 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 direction).

[0083] 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 transmitted multiple times by the network entity 105 in different directions. For example, the network entity 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device (e.g., network entity 105), or by a receiving device (e.g., UE 115)) beam directions for the network entity 105 to transmit or receive later.

[0084] 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.

[0085] In some examples, transmissions by a device (e.g., 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 set of beams across a system bandwidth or one or more subbands. Network entity 105 may send reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)), which may or may not be precoded. UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-faceted 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 employ similar techniques to send signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by UE 115), or to send signals along a single direction (e.g., for sending data to a receiving device).

[0086] When receiving various signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) from a receiving device (e.g., network entity 105), the receiving device (e.g., UE 115) may perform receiving operations according to multiple receiving configurations (e.g., directional listening). For example, the receiving device may perform reception according to multiple receiving directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receiving beamforming weight sets applied to signals received at multiple antenna elements of an antenna array (e.g., different directional listening weight sets), or by processing 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).

[0087] In some examples, UE 115, such as a sending UE, can perform sidelink communication according to different modes. For example, in one mode, UE 115 can rely on network entity 105 to manage sidelink communication resources. In this mode, the network entity can send a message to UE 115, and the message indicates the sidelink communication resources. In another mode, for example, UE 115 can determine the sidelink communication resources. In the case where the sending UE 115 determines the sidelink communication resources, the sending UE 115 can sense the resources used by other sending UEs 115, and the sending UE 115 can determine the available sidelink communication resources for communicating with the receiving UE 115. For example, some sending UEs 115 can use sidelink control information (SCI) to reserve communication resources. The sending UE 115 can sense the channel by, for example, receiving SCI from a nearby sending UE 115, and determine the resources that can be used for the sending UE 115 in future sidelink communications.

[0088] In some examples, UE 115 may perform an IUC process. In some cases (e.g., Scheme 1), the sending UE 115 may select or reselect a communication resource based on the auxiliary information received from the nearby sidelink UE 115. For example, the nearby sidelink UE 115 may indicate a preferred resource or a non-preferred resource to the sending UE 115. In some examples, the auxiliary information may be sent by the UE 115 based on a request from the sending UE 115. In other examples, the auxiliary information may be sent by the UE 115 based on satisfying a condition at the UE 115. In some cases (e.g., Scheme 2), the sending UE 115 may select a communication resource and broadcast a reservation message. The nearby UE 115 may receive the reservation message and send a message to the sending UE 115, the message indicating that the nearby UE 115 has a conflict with the resource selected by the sending UE 115.

[0089] The sending UE 115 may send a request (e.g., an IUC request message) for a nearby UE 115 to provide auxiliary information (e.g., IUC information) about preferred or non-preferred resources for transmission from the sending UE 115 to the nearby UE 115. For example, the request may include a priority value for transmission, a number of subchannels for transmission, a resource reservation interval, a start time and an end time of a resource selection window, or a combination thereof. In some examples, the auxiliary information may include an indication that the nearby UE 115 may prefer the sending UE 115 for transmission (e.g., preferred resources). In addition, or alternatively, the auxiliary information may include an indication that the nearby UE 115 may prefer the sending UE 115 for not using the transmission (e.g., non-preferred resources). The sending UE 115 may receive the auxiliary information indicating the preferred resources, and the sending UE 115 may attempt to use the indicated preferred resources for transmission. Similarly, the sending UE 115 may receive the auxiliary information indicating the non-preferred resources, and the sending UE may avoid using the non-preferred resources for transmission.

[0090] In some examples, the receiving UE 115 may select a preferred resource or a non-preferred resource based on resource usage by a nearby transmitting UE 115. For example, the receiving UE 115 may sense (e.g., receive) a reservation SCI for reserving a first resource from a nearby transmitting UE 115, and the receiving UE 115 may select a second resource different from the first resource as a preferred resource. Additionally or alternatively, the UE 115 may select the first resource as a non-preferred resource. The receiving UE 115 may send a message (e.g., IUC information) indicating a preferred resource or a non-preferred resource, which may help avoid interfering with transmissions of nearby transmitting UEs 115.

[0091] In some cases, if the receiving UE 115 is the intended recipient of the transmission of the transmitting UE 115, and the transmitting UE 115 selects resources determined to be available by the receiving UE 115 for the transmission, the transmitting UE 115 may request preferred resources from the receiving UE 115. Similarly, if the receiving UE 115 is the intended recipient for the transmission, and the transmitting UE 115 selects resources to avoid interference from nearby transmissions, the transmitting UE 115 may request non-preferred resources from the receiving UE 115. Additionally, or alternatively, if the receiving UE 115 is not the intended recipient for the transmission, the transmitting UE 115 may request non-preferred resources to avoid interfering with transmissions received by the receiving UE 115.

[0092] The transmitting UE 115 may receive IUC information from the receiving UE 115, the IUC information indicating a preferred resource set or a non-preferred resource set. The transmitting UE 115 may transmit using resources based on the IUC information received from the receiving UE 115 and, in some cases, sensing performed by the transmitting UE 115 or IUC information received from other UEs 115. In some cases, the transmitting UE 115 may check whether the number of candidate resources is below a threshold, and if so, the transmitting UE 115 may include resources outside the preferred resource set or resources within the non-preferred resource set until the threshold is reached.

[0093] In some examples, UE 115 may send IUC information using a medium access control (MAC) control element (MAC-CE) message or an SCI2-C message. In some cases, UE 115 may use a MAC-CE message to indicate more than two preferred resources or non-preferred resources, and UE 115 may use a MAC-CE or SCI 2-C ​​message when indicating 2 or less preferred resources or non-preferred resources. Preferred resources or non-preferred resources may be indicated using one or more of a time resource indicator value (TRIV), a frequency resource indicator value (FRIV), and a resource reservation interval (RRI).

[0094] The message containing the IUC information may include one or more fields corresponding to: an indicator for providing or requesting information, a resource combination, a first resource position, a reference time slot position, a resource set type, and a lowest subchannel index for the first resource position of each TRIV. In some examples, the field size (e.g., in bits) for the field corresponding to the resource combination may be given by the following formula 1, where N corresponds to the number of resources indicated in the IUC information, Provided by the high-level parameter sl-NumSubchannel, and Y is given by the following formula 2, where N rsv_period is the number of entries in the higher-level parameter sl-resourcereservePeriodList (if the higher-level parameter is configured), and Y is zero (if the higher-level parameter is not configured).

[0095]

[0096] Y=log2N rsv_period (2)

[0097] In a further example, the field size for the field corresponding to the first resource location may be given by Formula 3 below, where X is provided by the maximum value of the configured or preconfigured slot offset for the case where the message is used as a container for IUC information.

[0098] (N-1)*log2X(3)

[0099] The field size for the field corresponding to the reference first time slot position can be given by the following Formula 4, where μ is a value of zero, one, two or three corresponding to a subcarrier spacing (SCS) of 15kHz, 30kHz, 60kHz or 120kHz, respectively.

[0100] 10+log2(10*2 μ )(4)

[0101] The field size for the field of the lowest sub-channel index corresponding to the first resource position of each TRIV may be given by Formula 5 below.

[0102]

[0103] In some examples, UE 115 may determine the CBR, for example, in a CBR measurement window, which may be a calculation of resource usage of the network sensed by UE 115 divided by the total amount of available resources. UE 115 may sense resource usage of the network based on a sidelink received signal strength indicator (SL RSSI), which may be a linear average of the total received power observed in the configured subchannels, starting from the second OFDM symbol, in OFDM symbols in a time slot configured for sidelink data and control transmissions. Depending on the frequency range for the SL RSSI, UE 115 may determine the CBR based on a reference point for the SL RSSI (which may be an antenna connector of UE 115), or based on a combined signal from antenna elements corresponding to a receive branch of UE 115. For example, UE 115 may use the CBR measurement to select the number of HARQ retransmissions, parameters for sidelink transmissions in a time slot (e.g., L subCH ), modulation and coding scheme (MCS) selection, and channel occupancy rate (CR) limit selection.

[0104] In some cases, the auxiliary information determined by the receiving UE 115 and transmitted in the IUC message may depend on which beam of the receiving UE 115 is being used for sidelink communication with the transmitting UE 115. In addition, the transmitting UE 115 may perform channel sensing for upcoming communication with the receiving UE 115 located in a busy area of ​​the network, which may be an area with a relatively large number of transmission or transmission devices. However, the transmitting UE 115 may not be able to sense resource usage in the busy area of ​​the network where the receiving UE 115 is located. This may cause beam pair establishment problems, and the receiving UE 115 and the transmitting UE 115 may select a relatively poor beam set for sidelink communication.

[0105] According to examples as disclosed herein, a receiving UE 115 may broadcast a message containing IUC information using multiple beams of the receiving UE 115. In some examples, for each beam of the receiving UE 115, the IUC information in each message sent on each beam may be different. For example, each IUC information may contain different preferred resources or non-preferred resources to be used by the receiving UE 115 to receive a transmission from the sending UE 115. The sending UE 115 may receive a message containing IUC information from one of the beams of the receiving UE 115. The sending UE may send a signal (e.g., a RACH signal or a BFR signal) using a resource based on the IUC information contained in the received message. Therefore, the receiving UE 115 and the sending UE 115 may establish a beam pair based on the IUC information specific to the receiving beam used by the receiving UE 115.

[0106] In some examples, the sending UE 115 may send a message for requesting a CBR from the receiving UE 115. For example, the sending UE 115 may send a request for IUC information to the receiving UE 115, the request including a request for CBR. In some examples, the message may specify a TCI state, a spatial relationship, a spatial domain filter, or a beam according to which the receiving UE 115 is to measure the CBR. The receiving UE 115 may measure the CBR and send a message including the IUC information, the message may indicate the measured CBR. In some cases, the IUC information may include a preferred resource or a non-preferred resource of the receiving UE 115. The receiving UE 115 may measure the CBR for a preferred resource of the receiving UE 115 or for a resource other than a non-preferred resource of the receiving UE 115. Therefore, the sending UE 115 may obtain channel information from a busy area of ​​the network in which the receiving UE 115 is operating.

[0107] Figure 2 An example of a wireless communication system 200 is shown that supports IUC for resource management according to one or more aspects of the present disclosure. The wireless communication system 200 may be as described herein with reference to Figure 1 The wireless communication system 200 may include UE 115-a, UE 115-b, UE 115-c, UE 115-d, UE 115-e, UE 115-f, and UE 115-g, which may be as described herein. Figure 1 UE 115a may support sidelink communications with other UEs 115 via communication links 240-a, 240-b, 240-c, and 240-d, which may be referred to herein. Figure 1 An example of a communication link 125 is described.

[0108] In some examples, UE 115 may perform sidelink communications using one or more beams 205 to receive or send sidelink messages. For example, UE 115-a may support sidelink communications using beam 205-a, beam 205-b, beam 205-c, and beam 205-d. Similarly, UE 115-b may support communications using beam 205-e, UE 115-c may use beam 205-f, UE 115-d may use beam 205-g, UE 115-e may use beam 205-h, UE 115-f may use beam 205-i, and UE 115-g may use beam 205-j.

[0109] In some examples, one or more UEs 115 may use IUC messages 215 to transmit assistance information to assist in performing sidelink communications. However, in some cases, the assistance information may be different depending on which beam 205 the UE 115 is using to receive the sidelink communication. In addition, the receiving UE 115 may perform channel sensing for communicating with a transmitting UE 115 located in a busy area 210, which may be an area with a relatively large number of transmission or transmitting devices, but the receiving UE 115 may not be able to sense resource usage in the busy area 210. This may cause beam pair establishment problems, and the receiving UE 115 and the transmitting UE 115 may select a relatively poor beam set for transmission.

[0110] According to examples as described herein, UE 115-a may send an IUC message 215 via one or more beams 205. For example, UE 115-a may send an IUC message 215 on each of beam 205-a, beam 205-b, beam 205-c, and beam 205-d. In some examples, the IUC message 215 may be different for each beam 205. For example, each IUC message 215 may indicate resources (e.g., RACH resources), such as preferred resources or non-preferred resources for sidelink communications corresponding to each respective beam 205. That is, UE 115-a may determine preferred resources or non-preferred resources for receiving signals (e.g., BFR or RACH signals) on one or more beams 205. UE 115-a may then broadcast an IUC message on each respective beam 205, the IUC message indicating the preferred resources or non-preferred resources associated with each respective beam 205.

[0111] UE 115-a may select preferred resources or non-preferred resources to be included in the IUC message 215 via channel sensing. Some transmitting UEs 115 may reserve communication resources using SCI. UE 115-a may perform channel sensing by, for example, receiving SCI from a nearby transmitting UE 115. UE 115-a may determine resources available for sidelink communications based on channel sensing. In some examples, UE 115-a may select preferred resources or non-preferred resources for beam 205-a to reduce interference in communications using beam 205-a. Similarly, UE 115-a may select non-preferred resources based on resources in use by the transmitting UE 115. Preferred resources and non-preferred resources are referred to herein as Figure 3 Shown in more detail.

[0112] In some examples, the IUC message 215 may indicate a time during which the UE 115-a is to listen for a control signal (e.g., a RACH or BFR signal) from another UE 115. In some cases, the IUC message 215 may include or be sent with a master information block (MIB) or a system information block (SIB). The UE 115-a may use a spatial filter to send the IUC message 215. In some cases, the IUC message 215 may include a request (e.g., an IUC request) that may instruct the receiving UE 115 to include information about preferred resources or non-preferred resources for receiving a response signal 225 (e.g., a BFR or RACH response) in the control signal 220 (e.g., a BFR or RACH signal). In some examples, the IUC message 215 may include synchronization information or other system information.

[0113] UE 115-b may receive an IUC message 215 broadcasted by UE 115-a via beam 205-a via beam 205-e. For example, UE 115-b may scan channels for IUC message 215 for initial access from any UE 115. UE 115-b may detect and receive IUC message 215 from UE 115-a via beam 205-e. UE 115-b may decide to connect with UE 115-a (e.g., initiate sidelink communication) and send a control signal 220 (e.g., a BFR or RACH signal) to UE 115-a. UE 115-b may send control signal 220 via beam 205-e using the preferred resources indicated in the IUC message 215 received from UE 115-a. Additionally or alternatively, UE 115-b may send control signal 220 via beam 205-e using resources that are not non-preferred resources indicated in IUC message 215 received from UE 115-a. In some examples, UE 115-b may send control signal 220 for a duration indicated in IUC message 215 during which UE 115-a is to monitor control signals via beam 205-a. In some cases, UE 115-b may send control signal 220 using a spatial filter used to receive IUC message 215 from UE 115-a. In some examples, UE 115-b may include preferred resource or non-preferred resource information in control signal 220 or another message (e.g., IUC message 215), such as when UE 115-a requests in IUC message 215.

[0114] UE 115-a may receive control signal 220 from UE 115-b via beam 205-a. For example, UE 115-a may receive control signal 220 via resources indicated in IUC message 215 sent via beam 205-a. In some examples, control signal 220 may be received during a duration indicated in IUC message 215 during which UE 115-a monitors control signal 220 via beam 205-a. UE 115-a may send response signal 225 (e.g., RACH or BFR response signal) to UE 115-b. In some examples, such as when IUC message 215 includes a request for UE 115-b to provide preferred resource or non-preferred resource information, UE 115-a may send response signal 225 using preferred resources of UE 115-b or resources that are not non-preferred resources.

[0115] In some examples, UE 115-a may adjust transmission parameters to minimize interference to other UEs 115 in a busy area 210 (e.g., an area with a relatively high number of transmission or transmitting devices). For example, if UE 115-a is communicating with UE 115-b, which may be outside of busy area 210, UE 115-a may avoid adjusting transmission parameters to reduce interference. At the same time, if UE 115-a is communicating with UE 115-e, UE 115-a may use adjusted transmission parameters, such as by using a reduced transmission bandwidth for transmission. However, UE 115-a may not be aware that UE 115-e is located within busy area 210 because UE 115-a may not be able to perform channel sensing within busy area 210.

[0116] Thus, UE 115-a may send a CBR request 230 to UE 115-e to help determine whether to adjust the transmission parameters. For example, UE 115-a may use beam 205-b (e.g., via communication link 240-c) to send CBR request 230 to UE 115-e. In some examples, CBR request 230 may be part of an IUC message 215 (e.g., a request for IUC information). For example, a request for IUC information may implicitly include a request for CBR measurement. In some cases, CBR request 230 may specify a TCI state, spatial relationship, spatial domain filter, beam, or combination thereof for which UE 115-e should measure CBR. For example, UE 115-a may indicate to UE 115-e in CBR request 230 that beam 205-h is used to perform CBR measurement. In some examples, such as when CBR request 230 is part of IUC message 215, CBR request 230 may include preferred resources or non-preferred resources.

[0117] The UE 115-e may perform a CBR measurement (e.g., receive a CBR measurement) based on the received CBR request 230. For example, the UE 115-e may receive the CBR request 230 (e.g., as part of the IUC message 215) and perform the CBR measurement by sensing resource usage in the busy area 210, as described herein with reference to Figure 1230. In some examples, the UE 115-e may perform CBR measurements using TCI states, spatial relationships, beams 205, spatial domain filters, or a combination thereof (e.g., as specified in the CBR request 230). The UE 115-e may perform CBR measurements based on preferred resources or non-preferred resources associated with the CBR request 230. For example, the CBR measurement may be performed on a preferred resource associated with the CBR request 230. In some other examples, the CBR measurement may be performed on a resource that is not a non-preferred resource associated with the CBR request 230.

[0118] UE 115-e may send a message including a CBR indication 235, which may indicate to UE 115-a the CBR measurement performed by UE 115-e. Accordingly, UE 115-a may adjust transmission parameters based on the CBR measurement performed by UE 115-e within busy area 210, and UE 115-a may decide to use a reduced transmission bandwidth for sidelink transmissions with UE 115-e.

[0119] Figure 3 An example of a resource map 300 that supports IUC for resource management according to one or more aspects of the present disclosure is shown. Resource map 300 shows resources 305, which may be as described herein with reference to Figure 1 and Figure 2 The resource map 300 shows resource information 310-a and resource information 310-b, which can be as described herein. Figure 2 Examples of information included in IUC message 215 are described.

[0120] In some examples, UE 115 may select preferred resources 305-b or non-preferred resources 305-a based on resource usage of nearby transmitting UE 115. For example, receiving UE 115 may sense (e.g., receive) a reserved SCI for reserving first resources 305 from a nearby transmitting UE 115. Receiving UE 115 may select a second resource different from the first resource as a preferred resource. Additionally or alternatively, UE 115 may select the first resource as a non-preferred resource. Receiving UE 115 may send a message (e.g., IUC information) indicating a preferred resource or a non-preferred resource, which may help avoid interference with transmissions of nearby transmitting UE 115.

[0121] In some examples, such as when the receiving UE 115 knows or assumes the properties of the expected transmission from the sending UE 115, the receiving UE 115 can perform physical layer channel sensing to determine available resources. For example, the receiving UE 115 can perform physical layer resource exclusion on the resource set 305 in the resource selection window based on the time slots that were not sensed by the receiving UE 115. The receiving UE 115 can then check whether the amount of remaining resources 305 is below a threshold amount, where the threshold amount can be based on one or more parameters (e.g., a parameter corresponding to the priority of the sending UE 115, prio Tx ), and reinitialize the set to include resources 305 in the resource sensing window. The receiving UE 115 may then perform resource exclusion on the set based on the SCI received from the nearby UEs 115. The receiving UE 115 may check whether the amount of remaining resources 305 is below a threshold amount, and if so, reinitialize the set after combining one or more internal parameters associated with the received priority field and the priority of the receiving UE 115 (e.g., Th(p)). i ,p j )) increases by a certain amount (e.g., 3 decibels (dB)), restart the physical layer resource exclusion process. Otherwise, the receiving UE 115 can send a message (e.g., a MAC-CE message) to the sending UE 115 to indicate the resource set.

[0122] In other examples, such as when the receiving UE 115 is unaware of the properties of the expected transmission from the transmitting UE 115, the receiving UE 115 may measure the reference signal received power (RSRP) of the transmissions of the nearby transmitting UEs 115, and the receiving UE 115 may calculate the priority and resource reservation of the nearby transmitting UEs 115. In some examples, the preferred resources 305-b (e.g., candidate single-slot resources) for the receiving UE 115 may exclude resources that overlap with the reserved resources 305 of the transmitting UE 115 and have RSRP measurements exceeding a threshold RSRP. In some examples, the receiving UE 115 may select the preferred resources 305-b (e.g., candidate single-slot resources) for the receiving UE 115 based on one or more parameters (e.g., resource window start and end times prio 1). Tx , the amount of subchannels used for transmission (L subCH ), and resource reservation interval (P rsvp_Tx )) to determine the preferred resource 305-b. For example, the receiving UE 115 may determine the preferred resource 305-b based on a parameter corresponding to the priority of the sending UE 115 (e.g., Prio Tx ) to determine the threshold RSRP. In some cases, one or more parameters may be provided in a request for IUC information by the sending UE 115. Additionally or alternatively, the receiving UE 115 may determine one or more parameters, which may be configured or preconfigured to the receiving UE 115.

[0123] In some cases, the receiving UE 115 may determine the non-preferred resources 305-a as resources 305 reserved by other UEs 115 that have a measured RSRP greater than an RSRP threshold configured for the receiving UE 115, and the RSRP threshold may be based on a priority value of the other UEs 115 indicated in the SCI. This may help the receiving UE 115 avoid interference from the other UEs 115 when receiving transmissions. Additionally or alternatively, the receiving UE 115 may determine the non-preferred resources 305-a as resources 305 of the other UEs 115 that are used to transmit to the receiving UE 115 and have a measured RSRP less than the RSRP threshold. This may avoid transmissions received by the receiving UE 115 from interfering with other transmissions received by the receiving UE 115.

[0124] The first UE 115 may send an indication of preferred resources or non-preferred resources (e.g., in IUC information) to the second UE 115 to facilitate sidelink communications. For example, the first UE 115 may send IUC information regarding preferred resources or non-preferred resources for transmission from the second UE 115 to the first UE 115. In another example, the first UE 115 may indicate preferred resources or non-preferred resources for use by the second UE 115 in CBR measurement (e.g., in a CBR request). Figure 2 These applications are described in more detail.

[0125] In some examples, the first UE 115 may send a message (e.g., an IUC message) indicating resource information 310-a to the second UE 115, which may include one or more non-preferred resources 305-a. The second UE 115 may perform operations based on resources 305 other than the non-preferred resources 305-a. For example, the second UE 115 may perform CBR measurements using resources 305 other than the non-preferred resources 305-a. In some other examples, the second UE 115 may perform sidelink communications with the UE 115 using resources 305 other than the non-preferred resources 305-a.

[0126] In a further example, the first UE 115 may send a message (e.g., an IUC message) indicating resource information 310-b to the second UE 115, which may include one or more preferred resources 305-b. The second UE 115 may perform operations based on the preferred resources 305-b. For example, the second UE 115 may perform CBR measurements using the preferred resources 305-b. In another example, the second UE 115 may perform sidelink communications with the UE 115 using the preferred resources 305-b.

[0127] Figure 4 An example of a process flow 400 that supports IUC for resource management according to one or more aspects of the present disclosure is shown. The process flow 400 may be performed by a process flow 400 as described herein with reference to Figure 1 and 2 The process flow 400 illustrates communication between the UE 115-h and the UE 115-i, which may be implemented as described herein with reference to the wireless communication system 100 or the wireless communication system 200. Figure 1-3 An example of a UE 115 is described. In the following description of process flow 400, operations performed by the device may be performed in a different order or at a different time. Additionally or alternatively, some operations may be omitted from process flow 400, and other operations may be added to process flow 400.

[0128] At 405, UE 115-i may send a request for CBR measurement to UE 115-h. The request for CBR measurement may indicate a TCI state, a spatial relationship, a spatial domain filter, one or more beams, or any combination thereof to be used for UE 115-i to perform CBR measurement. In some examples, the request for CBR measurement may be sent in an IUC message.

[0129] At 410, UE 115-h may send an IUC request to UE 115-i. In some examples, the IUC request may indicate or request UE 115-i to provide one or more preferred resources associated with receiving a response message (e.g., a BFR or RACH response) from UE 115-h. Additionally or alternatively, the IUC request may indicate or request UE 115-i to provide one or more non-preferred resources associated with receiving a response message from UE 115-h. In some examples, the IUC request may be an example of an IUC message.

[0130] At 415, UE 115-h may send an IUC message to UE 115-i on each corresponding beam of one or more beams supported by UE 115-h. Each IUC message may indicate to UE 115-i a preferred set of resources of UE 115-h associated with the corresponding beam. In addition, or alternatively, the IUC message may indicate to UE 115-i a non-preferred set of resources of UE 115-h associated with the corresponding beam. Preferred resources or non-preferred resources may be associated with a RACH process or a BFR process. For example, UE 115-i may determine resources for sending a RACH signal or a BFR signal based on preferred resources or non-preferred resources. In some examples, an IUC request may be sent as part of an IUC message. In some cases, UE 115-h may send an IUC message based on a request for an IUC message received from UE 115-i. UE 115-h may send an IUC message based on a spatial filter. In some examples, the IUC message may be or include synchronization information associated with the UE 115 - h , system information associated with the UE 115 - h , or both.

[0131] In some examples, the IUC message may include an indication of the CBR measurement, such as when the UE 115-h receives a request for a CBR measurement from the UE 115-h. The CBR measurement may be based on the request for the CBR measurement. For example, the CBR measurement may be performed by the UE 115-h based on a TCI state, a spatial relationship, a spatial domain filter, one or more beams, or any combination thereof as indicated in the request for the CBR measurement. In some examples, the CBR measurement may be associated with one or more beams supported by the UE 115-h.

[0132] At 420, UE 115-i may send sidelink control signaling to UE 115-h based on the indicated preferred resource set or the indicated non-preferred resource set. For example, UE 115-i may use one or more of the resources indicated in the preferred resource set to send sidelink control signaling. In addition, or alternatively, UE 115-i may use one or more resources other than the resources indicated in the non-preferred resource set to send sidelink control signaling. Sidelink control signaling may be an example of a BFR signal or a RACH signal. In some cases, such as when UE 115-i receives an IUC request from UE 115-h, the sidelink control signaling may include an indication of a second set of preferred resources or non-preferred resources for UE 115-i to receive a response to the sidelink control signaling. UE 115-i may send sidelink control signaling based on a spatial filter used by UE 115-i to receive an IUC message 415 from UE 115-h. In some examples, UE 115 - i may adjust transmission bandwidth based on received indications of CBR measurements.

[0133] At 425, the UE 115-h may establish or modify a connection based on the received sidelink control signaling. For example, the UE 115-h may establish or modify a connection based on a RACH procedure or a BFR procedure. In some cases, the UE 115-h may establish or modify a connection based on a received indication of a second set of preferred resources or non-preferred resources.

[0134] At 430, UE 115-h may send a response message to UE 115-i. In some examples, the response message may be a BFR response message or a RACH response message. UE 115-h may send the response message based on the preferred resources or the second set of non-preferred resources. For example, UE 115-h may send sidelink control signaling using one or more resources of the resources indicated in the second set of preferred resources. Additionally or alternatively, UE 115-h may send sidelink control signaling using one or more resources other than the resources indicated in the second set of non-preferred resources.

[0135] Figure 5 A block diagram 500 of a device 505 supporting IUC for resource management according to one or more aspects of the present disclosure is shown. The device 505 can be an example of aspects of a UE 115 as described herein. The device 505 can include a receiver 510, a transmitter 515, and a communication manager 520. The device 505 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0136] The receiver 510 may provide a means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels related to IUC for resource management, data channels, information channels). The information may be passed to other components of the device 505. The receiver 510 may use a single antenna or a collection of multiple antennas.

[0137] The transmitter 515 may provide a 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 related to IUC for resource management, data channels, information channels). In some examples, the transmitter 515 may be collocated with the receiver 510 in the transceiver module. The transmitter 515 may use a single antenna or a collection of multiple antennas.

[0138] 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 resource management 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.

[0139] 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., with communication management circuitry). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof, which is configured as or otherwise supports a unit for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0140] 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 using code executed by a processor (e.g., implemented as communication management software or firmware). If implemented in code executed by a processor, the functions 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, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting means for performing the functions described in the present disclosure).

[0141] In some examples, the communication manager 520 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 510, the transmitter 515, or both. For example, the communication manager 520 can receive information from the receiver 510, send information to the transmitter 515, or be integrated with the receiver 510, the transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.

[0142] According to the examples 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 unit for sending an IUC message on each corresponding beam of one or more beams supported by the first UE, the IUC message indicating a preferred resource set associated with the beam, the preferred resource set being used to receive sidelink control signaling associated with a random access procedure or a BFR procedure. The communication manager 520 may be configured to or otherwise support a unit for receiving sidelink control signaling from a second UE on a beam in one or more beams according to a set of preferred resources associated with the beam. The communication manager 520 may be configured to or otherwise support a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling according to a random access procedure or a BFR procedure.

[0143] Additionally or alternatively, according to examples as disclosed herein, the communication manager 520 may support wireless communications at the first UE. For example, the communication manager 520 may be configured to or otherwise support a unit for sending an IUC message on a beam supported by the first UE, the IUC message indicating a CBR measurement and a preferred resource set associated with the beam for receiving sidelink signaling. The communication manager 520 may be configured to or otherwise support a unit for receiving sidelink signaling from a second UE on a beam in one or more beams according to a preferred resource set associated with the beam.

[0144] 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 unit for receiving an IUC message indicating a preferred resource set associated with a beam on a beam used to send sidelink control signaling associated with a random access procedure or a BFR procedure. The communication manager 520 may be configured to or otherwise support a unit for sending sidelink control signaling to the first UE on a beam according to a preferred resource set associated with the beam. The communication manager 520 may be configured to or otherwise support a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0145] By including or configuring the communication manager 520 according to examples as described herein, the device 505 (e.g., a processor controlling or otherwise coupled to the receiver 510, the transmitter 515, the communication manager 520, or a combination thereof) can support techniques for IUC for resource management, which can result in more efficient utilization of communication resources.

[0146] Figure 6 A block diagram 600 of a device 605 supporting IUC for resource management 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).

[0147] 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 related to IUC for resource management, data channels, information channels). The information may be passed to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0148] The transmitter 615 may provide a 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 related to IUC for resource management, data channels, information channels). In some examples, the transmitter 615 may be collocated with the receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0149] The communication manager 605 or its various components may be examples of units for performing various aspects of IUC for resource management as described herein. For example, the communication manager 620 may include an IUC message component 625, a sidelink control component 630, a sidelink connection manager 635, a CBR component 640, a preferred resource manager 645, or any combination thereof. The communication manager 620 may be an example of aspects of the communication manager 520 as described herein. In some examples, the communication manager 620 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using the receiver 610, the transmitter 615, or both or otherwise in cooperation with the receiver 610, the transmitter 615, or both. For example, the communication manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated to obtain information, output information, or perform various other operations as described herein in combination with the receiver 610, the transmitter 615, or both.

[0150] According to examples as disclosed herein, the communication manager 620 may support wireless communications at a first UE. The IUC message component 625 may be configured to or otherwise support a unit for sending an IUC message on each corresponding beam of one or more beams supported by the first UE, the IUC message indicating a preferred set of resources associated with the beam, the preferred set of resources being used to receive sidelink control signaling associated with a random access procedure or a BFR procedure. The sidelink control component 630 may be configured to or otherwise support a unit for receiving sidelink control signaling from a second UE on a beam in one or more beams according to a set of preferred resources associated with the beam. The sidelink connection manager 635 may be configured to or otherwise support a unit for establishing or modifying a connection between a first UE and a second UE based on the sidelink control signaling according to a random access procedure or a BFR procedure.

[0151] Additionally or alternatively, according to examples as disclosed herein, the communication manager 620 can support wireless communications at the first UE. The CBR component 640 can be configured as or otherwise support means for sending an IUC message on a beam supported by the first UE, the IUC message indicating a CBR measurement and a preferred set of resources associated with the beam for receiving sidelink signaling. The sidelink connection manager 635 can be configured as or otherwise support means for receiving sidelink signaling from a second UE on a beam in one or more beams according to a set of preferred resources associated with the beam.

[0152] Additionally or alternatively, according to examples as disclosed herein, the communication manager 620 may support wireless communications at the second UE. The preferred resource manager 645 may be configured to or otherwise support a unit for receiving an IUC message indicating a preferred set of resources associated with a beam on a beam used to send sidelink control signaling associated with a random access procedure or a BFR procedure. The sidelink control component 630 may be configured to or otherwise support a unit for sending sidelink control signaling to the first UE on a beam based on a set of preferred resources associated with the beam. The sidelink connection manager 635 may be configured to or otherwise support a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0153] Figure 7 A block diagram 700 of a communication manager 720 supporting IUC for resource management 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 units for performing various aspects of the IUC for resource management as described herein. For example, the communication manager 720 may include an IUC message component 725, a sidelink control component 730, a sidelink connection manager 735, a CBR component 740, a preferred resource manager 745, a BFR manager 750, an IUC request manager 755, a CBR request manager 760, a scheduling manager 765, a synchronization manager 770, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0154] According to examples as disclosed herein, the communication manager 720 may support wireless communications at a first UE. The IUC message component 725 may be configured to or otherwise support a unit for sending an IUC message on each corresponding beam of one or more beams supported by the first UE, the IUC message indicating a preferred resource set associated with the beam, the preferred resource set being used to receive sidelink control signaling associated with a random access procedure or a BFR procedure. The sidelink control component 730 may be configured to or otherwise support a unit for receiving sidelink control signaling from a second UE on a beam in one or more beams according to a set of preferred resources associated with the beam. The sidelink connection manager 735 may be configured to or otherwise support a unit for establishing or modifying a connection between a first UE and a second UE based on the sidelink control signaling according to a random access procedure or a BFR procedure.

[0155] In some examples, to support sending an IUC message, the IUC message component 725 can be configured as or otherwise support a unit for sending an IUC request, wherein the IUC request indicates or requests the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

[0156] In some examples, sidelink control component 730 can be configured or otherwise support means for receiving, in response to the IUC request, an indication of one or more preferred resources in a second set of preferred resources, wherein the sidelink control signaling includes the indication. In some examples, BFR manager 750 can be configured or otherwise support means for sending a response to the sidelink control signaling based on the one or more preferred resources in the second set of preferred resources.

[0157] In some examples, to support establishing or modifying a connection, the BFR manager 750 may be configured as or otherwise support a unit for sending a BFR response associated with a BFR procedure or a random access response associated with a random access procedure in response to sidelink control signaling, wherein the sidelink control signaling includes a BFR signal or a random access signal.

[0158] In some examples, IUC request manager 755 may be configured or otherwise support means for receiving a request for an IUC message, wherein sending the IUC message is in response to the request.

[0159] In some examples, the sidelink control component 730 can be configured as or otherwise support a unit for receiving sidelink control information from one or more UEs indicating scheduling information for the one or more UEs, wherein the IUC message indicates an updated preferred resource set based on the scheduling information for the one or more UEs.

[0160] In some examples, the IUC message is sent to the second UE on a beam according to a spatial filter. In some examples, the receiving side link control signaling is according to a spatial filter.

[0161] In some examples, to support sending IUC messages, the IUC message component 725 can be configured as or otherwise support a unit for sending synchronization information associated with the first UE, system information associated with the first UE, or both on each corresponding beam in a plurality of beam sets supported by the first UE.

[0162] Additionally or alternatively, according to examples as disclosed herein, the communication manager 720 can support wireless communications at the first UE. The CBR component 740 can be configured as or otherwise support a unit for sending an IUC message on a beam supported by the first UE, the IUC message indicating a CBR measurement and a preferred set of resources associated with the beam for receiving sidelink signaling. In some examples, the sidelink connection component 735 can be configured as or otherwise support a unit for receiving sidelink signaling from a second UE on a beam in one or more beams based on a set of preferred resources associated with the beam.

[0163] In some examples, the sidelink signaling is associated with a random access procedure or a BFR procedure. In some examples, the CBR measurement is associated with one or more beams.

[0164] In some examples, the CBR request manager 760 can be configured as or otherwise support a unit for receiving a request for a CBR measurement, wherein sending the CBR measurement is based on the request. In some examples, the request for the CBR measurement indicates a TCI state for one or more beams, a spatial relationship for one or more beams, a spatial domain filter for one or more beams, one or more beams, or any combination thereof.

[0165] In some examples, the IUC request manager 755 can be configured to or otherwise support means for receiving a request for an IUC message, wherein sending the CBR measurement is based on the request. In some examples, the CBR component 740 can be configured to or otherwise support means for receiving a data transmission based on one or more transmission parameters corresponding to the CBR measurement. In some examples, the CBR component 740 can be configured to or otherwise support means for performing CBR measurements based on a set of preferred resources.

[0166] Additionally or alternatively, according to examples as disclosed herein, the communication manager 720 may support wireless communications at a second UE. The preferred resource manager 745 may be configured to or otherwise support a unit for receiving an IUC message indicating a preferred set of resources associated with a beam on a beam used to send sidelink control signaling associated with a random access procedure or a BFR procedure. In some examples, the sidelink control component 730 may be configured to or otherwise support a unit for sending sidelink control signaling to a first UE on a beam based on a set of preferred resources associated with the beam. In some examples, the sidelink connection manager 735 may be configured to or otherwise support a unit for establishing or modifying a connection between a first UE and a second UE based on the sidelink control signaling.

[0167] In some examples, to support receiving IUC messages, the preferred resource manager 745 can be configured as or otherwise support a unit for receiving an IUC request, wherein the IUC request indicates or requests the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

[0168] In some examples, the preferred resource manager 745 can be configured or otherwise support means for sending, in response to the IUC request, an indication of one or more preferred resources in the second set of preferred resources, wherein the sidelink control signaling includes the indication. In some examples, the sidelink control component 730 can be configured or otherwise support means for receiving a response to the sidelink control signaling based on the one or more preferred resources in the second set of preferred resources.

[0169] In some examples, to support establishing or modifying a connection, the BFR manager 750 may be configured as or otherwise support a unit for receiving a BFR response associated with a BFR procedure or a random access response associated with a random access procedure in response to sidelink control signaling, wherein the sidelink control signaling includes a BFR signal or a random access signal.

[0170] In some examples, IUC request manager 755 may be configured or otherwise support means for sending a request for an IUC message, wherein receiving the IUC message is in response to the request.

[0171] In some examples, the scheduling manager 765 can be configured as or otherwise support a unit for sending sidelink control information to a first UE indicating scheduling information for the first UE, wherein the IUC message indicates an updated preferred resource set based on the scheduling information for the first UE.

[0172] In some examples, the IUC message is received from the first UE on a beam according to a spatial filter. In some examples, the sidelink control signaling is transmitted according to a spatial filter.

[0173] In some examples, to support receiving IUC messages, the synchronization manager 770 may be configured as or otherwise support means for receiving synchronization information associated with the first UE, system information associated with the first UE, or both on a beam.

[0174] In some examples, to support receiving IUC messages, CBR component 740 can be configured or otherwise support means for receiving CBR measurements associated with the beam on the beam.

[0175] In some examples, the CBR request manager 760 can be configured as or otherwise support a unit for sending a request for a CBR measurement for a beam, wherein receiving the CBR measurement is based on the request. In some examples, the request for the CBR measurement indicates a TCI state for the beam, a spatial relationship for the beam, a spatial domain filter for the beam, the beam, or any combination thereof.

[0176] In some examples, IUC request manager 755 may be configured or otherwise support means for sending a request for an IUC message, wherein receiving a CBR measurement is based on the request.

[0177] In some examples, CBR component 740 can be configured or otherwise support means for sending a data transmission on a beam based on one or more transmission parameters corresponding to the CBR measurement.

[0178] Figure 8 A diagram of a system 800 including a device 805 supporting IUC for resource management according to one or more aspects of the present disclosure is shown. The device 805 may be an example of or include components of a device 505, a device 605, or a UE 115 as described herein. 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 in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 845).

[0179] I / O controller 810 can manage input 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 a plurality of external peripheral devices such as , or other known operating systems. 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 (e.g., 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.

[0180] 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 able to send or receive multiple wireless transmissions at the same time. As described herein, the transceiver 815 can communicate bidirectionally via one or more antennas 825, wired or wireless links. For example, the transceiver 815 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 815 may also include a modem for modulating packets and providing 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, can be an example of a transmitter 515, a transmitter 615, a receiver 510, a receiver 610, or any combination thereof or components thereof, as described herein.

[0181] 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, which includes 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 other type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but may cause the computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, the memory 830 may contain, 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.

[0182] 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 device, 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) so that the device 805 performs various functions (e.g., functions or tasks supporting an IUC for resource management). 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 various functions described herein.

[0183] According to the examples 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 unit for sending an IUC message on each corresponding beam of one or more beams supported by the first UE, the IUC message indicating a preferred resource set associated with the beam, the preferred resource set being used to receive sidelink control signaling associated with a random access procedure or a BFR procedure. The communication manager 820 may be configured to or otherwise support a unit for receiving sidelink control signaling from a second UE on a beam in one or more beams according to a set of preferred resources associated with the beam. The communication manager 820 may be configured to or otherwise support a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling according to a random access procedure or a BFR procedure.

[0184] Additionally or alternatively, according to examples as disclosed herein, the communication manager 820 may support wireless communications at the first UE. For example, the communication manager 820 may be configured to or otherwise support a unit for sending an IUC message on a beam supported by the first UE, the IUC message indicating a CBR measurement and a preferred resource set associated with the beam for receiving sidelink signaling. The communication manager 820 may be configured to or otherwise support receiving sidelink signaling from a second UE on a beam in one or more beams according to a preferred resource set associated with the beam.

[0185] 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 unit for receiving an IUC message indicating a preferred resource set associated with a beam on a beam used to send sidelink control signaling associated with a random access procedure or a BFR procedure. The communication manager 820 may be configured to or otherwise support a unit for sending sidelink control signaling to the first UE on a beam according to a preferred resource set associated with the beam. The communication manager 820 may be configured to or otherwise support a unit for establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling.

[0186] By including or configuring the communication manager 820 according to examples as described herein, the device 805 can support techniques for resource managed IUC, which can result in improved communication reliability, improved coordination between devices, and an improved user experience associated with the improved reliability.

[0187] In some examples, the communication manager 820 can 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 shown 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 executable by the processor 840 to cause the device 805 to perform various aspects of the IUC for resource management as described herein, or the processor 840 and the memory 830 may be otherwise configured to perform or support such operations.

[0188] Fig. 9 A flow chart illustrating a method 900 for supporting IUC for resource management 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 a component thereof as described herein. For example, the operations of the method 900 may be implemented by a UE or a component thereof as described herein. Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0189] At 905, the method may include: sending an IUC message on each corresponding beam of one or more beams supported by the first UE, the IUC message indicating a preferred resource set associated with the beam, the preferred resource set for receiving sidelink control signaling associated with a random access procedure or a BFR procedure. 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 with reference to Figure 7 The IUC message component 725 described above is executed.

[0190] At 910, the method may include receiving sidelink control signaling from a second UE on a beam in one or more beams according to a set of preferred resources associated with the beam. 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 with reference to Figure 7 The sidelink control component 730 described is executed.

[0191] At 915, the method may include: establishing or modifying a connection between the first UE and the second UE based on sidelink control signaling according to a random access procedure or a BFR procedure. The operation of 915 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 915 may be performed as described with reference to Figure 7 The described sidelink connection manager 735 is executed.

[0192] Fig.10 A flow chart illustrating a method 1000 for supporting IUC for resource management according to one or more aspects of the present disclosure is shown. As described herein, the operations of the method 1000 may be implemented by a UE or a component thereof. For example, the operations of the method 1000 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0193] At 1005, the method may include: sending an IUC message on each corresponding beam of one or more beams supported by the first UE, the IUC message indicating a preferred resource set associated with the beam, the preferred resource set for receiving sidelink control signaling associated with a random access procedure or a BFR procedure. The operations of 1005 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1005 may be performed as described with reference to Figure 7 The IUC message component 725 described above is executed.

[0194] At 1010, the method may include sending an IUC request indicating that the second UE provides one or more preferred resources for receiving a response to the sidelink control signaling. 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 with reference to Figure 7 The IUC message component 725 described above is executed.

[0195] At 1015, the method may include: receiving sidelink control signaling from a second UE on a beam of the one or more beams according to a preferred resource set associated with the beam. 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 with reference to Figure 7 The sidelink control component 730 described is executed.

[0196] At 1020, the method may include: in response to the IUC request, receiving an indication of one or more preferred resources in the second set of preferred resources, wherein the sidelink control signaling includes the indication. The operations of 1020 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1020 may be performed as described with reference to Figure 7 The sidelink control component 730 described is executed.

[0197] At 1025, the method may include: establishing or modifying a connection between the first UE and the second UE based on sidelink control signaling according to a random access procedure or a BFR procedure. The operations of 1025 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1025 may be performed as described with reference to Figure 7 The described sidelink connection manager 735 is executed.

[0198] At 1030, the method may include: sending a response to the sidelink control signaling according to one or more preferred resources. The operations of 1030 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1030 may be performed as described with reference to Figure 7 The BFR manager 750 described above is executed.

[0199] Fig.11 1 is a flow chart of a method 1100 for supporting IUC for resource management according to one or more aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1100 may be implemented by a UE or a component thereof as described herein. Figures 1 to 8 The UE 115 described herein performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0200] At 1105, the method may include sending an IUC message on a beam supported by the first UE, the IUC message indicating a CBR measurement and a preferred set of resources associated with the beam for receiving sidelink signaling. 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 with reference to Figure 7 The CBR component 740 described above is performed.

[0201] At 1110, the method may include receiving sidelink signaling from a second UE on a beam of the one or more beams according to a preferred resource set associated with the beam. 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 with reference to Figure 7 The described sidelink connection manager 735 is executed.

[0202] Fig.12 A flow chart illustrating a method 1200 for supporting IUC for resource management 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 performs. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0203] At 1205, the method may include: receiving, on a beam used to send sidelink control signaling associated with a random access procedure or a BFR procedure, an IUC message indicating a preferred resource set associated with the beam. 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 with reference to Figure 7 The preferred resource manager 745 described is executed.

[0204] At 1210, the method may include: sending sidelink control signaling to the first UE on the beam according to the preferred resource set associated with the beam. The operations of 1210 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1210 may be performed as described with reference to Figure 7 The sidelink control component 730 described is executed.

[0205] At 1215, the method may include: establishing or modifying a connection between the first UE and the second UE based on the sidelink control signaling. 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 with reference to Figure 7 The described sidelink connection manager 735 is executed.

[0206] The following provides an overview of various aspects of the present disclosure:

[0207] Aspect 1: A method for performing wireless communication at a first UE, comprising: sending an inter-UE coordination message on each corresponding beam of one or more beams supported by the first UE, the inter-UE coordination message indicating a preferred resource set associated with the beam, the preferred resource set being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; receiving the sidelink control signaling from a second UE on a beam among the one or more beams according to the set of preferred resources associated with the beam; and establishing or modifying a connection between the first UE and the second UE based at least in part on the sidelink control signaling according to the random access procedure or the beam failure recovery procedure.

[0208] Aspect 2: A method according to Aspect 1, wherein sending the inter-UE coordination message includes: sending an inter-UE coordination request, wherein the inter-UE coordination request indicates that the second UE provides one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

[0209] Aspect 3: The method according to Aspect 2 further includes: receiving an indication of the one or more preferred resources in the second set of preferred resources in response to the inter-UE coordination request, wherein the sidelink control signaling includes the indication; and sending the response to the sidelink control signaling based on the one or more preferred resources in the second set of preferred resources.

[0210] Aspect 4: A method according to any aspect of Aspects 1 to 3, wherein establishing or modifying the connection includes: in response to the sidelink control signaling, sending a beam failure recovery response associated with the beam failure recovery process or a random access response associated with the random access process, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

[0211] Aspect 5: The method according to any of aspects 1 to 4 further includes: receiving a request for the inter-UE coordination message, wherein sending the inter-UE coordination message is in response to the request.

[0212] Aspect 6: The method according to any aspect of Aspects 1 to 5 further includes: receiving sidelink control information from one or more UEs for indicating scheduling information for the one or more UEs, wherein the inter-UE coordination message indicates an updated preferred resource set based at least in part on the scheduling information for the one or more UEs.

[0213] Aspect 7: A method according to any of Aspects 1 to 6, wherein the inter-UE coordination message is sent to the second UE on the beam according to a spatial filter, and the sidelink control signaling is received according to the spatial filter.

[0214] Aspect 8: A method according to any aspect of Aspects 1 to 7, wherein sending the inter-UE coordination message includes: sending synchronization information associated with the first UE, system information associated with the first UE, or both on each corresponding beam of the multiple beams supported by the first UE.

[0215] Aspect 9: A method for performing wireless communication at a first UE, comprising: sending an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred resource set associated with the beam for receiving sidelink signaling; and receiving the sidelink signaling from a second UE on a beam among the one or more beams based on the preferred resource set associated with the beam.

[0216] Aspect 10: The method according to Aspect 9, wherein the sidelink signaling is associated with a random access procedure or a beam failure recovery procedure.

[0217] Aspect 11: The method according to any of aspects 9 to 10, wherein the channel busy ratio measurement is associated with the one or more beams.

[0218] Aspect 12: The method according to any of aspects 9 to 11, further comprising: receiving a request for the channel busy ratio measurement, wherein sending the channel busy ratio measurement is based at least in part on the request.

[0219] Aspect 13: A method according to Aspect 12, wherein the request for the channel busy ratio measurement indicates a transmission configuration indicator state for the one or more beams, a spatial relationship for the one or more beams, a spatial domain filter for the one or more beams, the one or more beams, or any combination thereof.

[0220] Aspect 14: The method according to any of aspects 9 to 13 further comprises: receiving a request for the inter-UE coordination message, wherein sending the channel busy ratio measurement is based at least in part on the request.

[0221] Aspect 15: The method according to any of aspects 9 to 14, further comprising: receiving a data transmission based at least in part on one or more transmission parameters corresponding to the channel busy ratio measurement.

[0222] Aspect 16: The method according to any of aspects 9 to 15, further comprising: performing the channel busy ratio measurement based at least in part on the preferred resource set.

[0223] Aspect 17: A method for wireless communication for a second UE, comprising: receiving, on a beam used to send sidelink control signaling associated with a random access procedure or a beam failure recovery procedure, an inter-UE coordination message indicating a preferred resource set associated with the beam; sending the sidelink control signaling to a first UE on the beam based on the preferred resource set associated with the beam; and establishing or modifying a connection between the first UE and the second UE based at least in part on the sidelink control signaling.

[0224] Aspect 18: A method according to Aspect 17, wherein receiving the inter-UE coordination message includes: receiving an inter-UE coordination request, wherein the inter-UE coordination request indicates that the second UE provides one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

[0225] Aspect 19: The method according to Aspect 18 further includes: sending an indication of the one or more preferred resources in the second set of preferred resources in response to the inter-UE coordination request, wherein the sidelink control signaling includes the indication; and receiving the response to the sidelink control signaling based on the one or more preferred resources in the second set of preferred resources.

[0226] Aspect 20: A method according to any aspect of Aspects 17 to 19, wherein establishing or modifying the connection includes: in response to the sidelink control signaling, receiving a beam failure recovery response associated with the beam failure recovery process or a random access response associated with the random access process, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

[0227] Aspect 21: The method according to any of aspects 17 to 20 further comprises: sending a request for the inter-UE coordination message, wherein receiving the inter-UE coordination message is in response to the request.

[0228] Aspect 22: The method according to any aspect of Aspects 17 to 21 further includes: sending side link control information to the first UE for indicating scheduling information for the first UE, wherein the inter-UE coordination message indicates an updated preferred resource set based at least in part on the scheduling information for the first UE.

[0229] Aspect 23: A method according to any of Aspects 17 to 22, wherein the inter-UE coordination message is received from the first UE on the beam according to a spatial filter, and the sidelink control signaling is sent according to the spatial filter.

[0230] Aspect 24: A method according to any of Aspects 17 to 23, wherein receiving the inter-UE coordination message includes: receiving synchronization information associated with the first UE, system information associated with the first UE, or both on the beam.

[0231] Aspect 25: The method according to any of aspects 17 to 24, wherein receiving the inter-UE coordination message includes: receiving a channel busy ratio measurement associated with the beam on the beam.

[0232] Aspect 26: The method according to aspect 25 further comprises: sending a request for the channel busy ratio measurement for the beam, wherein receiving the channel busy ratio measurement is based at least in part on the request.

[0233] Aspect 27: A method according to Aspect 26, wherein the request for the channel busy ratio measurement indicates a transmission configuration indicator state for the beam, a spatial relationship for the beam, a spatial domain filter for the beam, the beam, or any combination thereof.

[0234] Aspect 28: The method according to any of aspects 25 to 27 further comprises: sending a request for the inter-UE coordination message, wherein receiving the channel busy ratio measurement is based at least in part on the request.

[0235] Aspect 29: The method according to any of aspects 25 to 28 further comprises: sending data transmission on the beam based at least in part on one or more transmission parameters corresponding to the channel busy ratio measurement.

[0236] Aspect 30: An apparatus for wireless communication at a first UE, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor so that the apparatus performs a method according to any one of Aspects 1 to 8.

[0237] Aspect 31: An apparatus for wireless communication at a first UE, comprising at least one unit for performing the method according to any one of aspects 1 to 8.

[0238] Aspect 32: A non-transitory computer-readable medium storing code for wireless communication at a first UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 8.

[0239] Aspect 33: An apparatus for wireless communication at a first UE, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor so that the apparatus performs a method according to any one of Aspects 9 to 16.

[0240] Aspect 34: An apparatus for wireless communication at a first UE, comprising at least one unit for performing a method according to any one of aspects 9 to 16.

[0241] Aspect 35: A non-transitory computer-readable medium storing code for wireless communication at a first UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 9 to 16.

[0242] Aspect 36: An apparatus for wireless communication at a second UE, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor so that the apparatus performs a method according to any one of Aspects 17 to 29.

[0243] Aspect 37: An apparatus for wireless communication at a second UE, comprising at least one unit for performing the method according to any one of aspects 17 to 29.

[0244] Aspect 38: A non-transitory computer-readable medium storing code for wireless communication at a second UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 17 to 29.

[0245] It should be noted that the methods described herein describe possible implementations, and that 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.

[0246] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the specification, the techniques described herein are applicable beyond 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.

[0247] 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 mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0248] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed by a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in 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, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0249] 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 on a computer-readable medium using one or more instructions or codes, or may be sent on a computer-readable medium. Other examples and implementations are within the scope of this 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.

[0250] Computer-readable media include non-transitory computer storage media and communication media, including any medium that helps to transfer a computer program from one place to another.Non-transitory storage media can be any available medium that can be accessed by a general or special computer.By way of example and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage device, or can be used for carrying or storing desired program code units and any other non-transitory media that can be accessed by a general or special computer or a general or special processor in the form of an instruction or data structure.Moreover, any connection is appropriately referred to as computer-readable media.For example, if software is sent from a website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of computer-readable media.Disks and optical discs used herein include CD, laser optical disc, optical optical disc, digital versatile disc (DVD), floppy disk and blue-ray disc. Magnetic disks can reproduce data magnetically, while optical disks can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0251] As used herein, including in the claims, "or", when used in a list of items (e.g., a list of items ending with 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" can 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."

[0252] The terms "determine" or "determining" encompass a wide variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database, or another data structure), ascertaining, etc. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Furthermore, "determining" may include solving, obtaining, selecting, choosing, establishing, and other such similar operations.

[0253] As used herein, the phrase "set" should be interpreted as including the possibility of a set having one member. That is, the phrase "set" should be interpreted in the same manner as "one or more".

[0254] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number to distinguish between similar components. If only the first reference number is used in this application, the description applies to any similar component having the same first reference number, regardless of the second or other subsequent reference numbers.

[0255] 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." Specific embodiments include specific details for providing an understanding of the technology. However, these technologies may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the examples.

[0256] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those 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. Therefore, the present disclosure is not limited to the examples and designs described herein, but is given 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), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: sending, on each corresponding beam of one or more beams supported by the first UE, an inter-UE coordination message indicating a preferred set of resources associated with the beam, the preferred set of resources being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; receiving, on a beam of the one or more beams, the sidelink control signaling from a second UE according to the preferred set of resources associated with the beam; as well as A connection between the first UE and the second UE is established or modified based at least in part on the sidelink control signaling according to the random access procedure or the beam failure recovery procedure.

2. The device according to claim 1, wherein: The instructions for sending the inter-UE coordination message are executable by the processor to cause the apparatus to: An inter-UE coordination request is sent, the inter-UE coordination request instructing the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

3. The device according to claim 2, wherein: The instructions are also executable by the processor to cause the apparatus to: receiving, in response to the inter-UE coordination request, an indication of the one or more preferred resources in the second set of preferred resources, wherein the sidelink control signaling includes the indication; and The response to the sidelink control signaling is sent according to the one or more preferred resources in the second set of preferred resources.

4. The device according to claim 1, wherein: The instructions for establishing or modifying the connection are executable by the processor to cause the apparatus to: In response to the sidelink control signaling, a beam failure recovery response associated with the beam failure recovery procedure or a random access response associated with the random access procedure is sent, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

5. The device according to claim 1, wherein: The instructions are also executable by the processor to cause the apparatus to: A request for the inter-UE coordination message is received, wherein sending the inter-UE coordination message is in response to the request.

6. The device according to claim 1, wherein: The instructions are also executable by the processor to cause the apparatus to: Sidelink control information is received from one or more UEs indicating scheduling information for the one or more UEs, wherein the inter-UE coordination message indicates an updated preferred set of resources based at least in part on the scheduling information for the one or more UEs.

7. The device according to claim 1, wherein: The inter-UE coordination message is sent to the second UE on the beam according to a spatial filter, and the sidelink control signaling is received according to the spatial filter.

8. The device according to claim 1, wherein: The instructions for sending the inter-UE coordination message are executable by the processor to cause the apparatus to: Synchronization information associated with the first UE, system information associated with the first UE, or both are transmitted on each respective beam of the one or more beams supported by the first UE.

9. An apparatus for wireless communication at a first user equipment (UE), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: sending an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred set of resources associated with the beam for receiving sidelink signaling; and The sidelink signaling from the second UE is received on a beam of one or more beams supported by the first UE according to the preferred resource set associated with the beam.

10. The device according to claim 9, wherein: The sidelink signaling is associated with a random access procedure or a beam failure recovery procedure.

11. The device according to claim 9, wherein: The channel busy ratio measurement is associated with the one or more beams.

12. The device according to claim 9, wherein: The instructions are also executable by the processor to cause the apparatus to: A request for the channel busy ratio measurement is received, wherein sending the channel busy ratio measurement is based at least in part on the request.

13. The device according to claim 12, wherein: The request for the channel busy ratio measurement indicates a transmission configuration indicator state for the one or more beams, a spatial relationship for the one or more beams, a spatial domain filter for the one or more beams, the one or more beams, or any combination thereof.

14. The device according to claim 9, wherein: The instructions are also executable by the processor to cause the apparatus to: A request for the inter-UE coordination message is received, wherein sending the channel busy ratio measurement is based at least in part on the request.

15. The device according to claim 9, wherein: The instructions are also executable by the processor to cause the apparatus to: A data transmission is received based at least in part on one or more transmission parameters corresponding to the channel busy ratio measurement.

16. The device according to claim 9, wherein: The instructions are also executable by the processor to cause the apparatus to: The measuring of the channel busy ratio is performed based at least in part on the preferred set of resources.

17. An apparatus for wireless communication of a second user equipment (UE), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving, on a beam used for sending sidelink control signaling associated with a random access procedure or a beam failure recovery procedure, an inter-UE coordination message indicating a preferred resource set associated with the beam; sending the sidelink control signaling to the first UE on the beam according to the preferred resource set associated with the beam; as well as Based at least in part on the sidelink control signaling, a connection between the first UE and the second UE is established or modified.

18. The device according to claim 17, wherein: The instructions for receiving the inter-UE coordination message are executable by the processor to cause the apparatus to: An inter-UE coordination request is received, the inter-UE coordination request instructing the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

19. The device according to claim 18, wherein: The instructions are also executable by the processor to cause the apparatus to: sending, in response to the inter-UE coordination request, an indication of the one or more preferred resources in the second set of preferred resources, wherein the sidelink control signaling includes the indication; and The response to the sidelink control signaling is received according to the one or more preferred resources in the second set of preferred resources.

20. The device according to claim 17, wherein: The instructions for establishing or modifying the connection are executable by the processor to cause the apparatus to: In response to the sidelink control signaling, a beam failure recovery response associated with the beam failure recovery procedure or a random access response associated with the random access procedure is received, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

21. The device according to claim 17, wherein: The instructions are also executable by the processor to cause the apparatus to: A request for the inter-UE coordination message is sent, wherein receiving the inter-UE coordination message is in response to the request.

22. The device according to claim 17, wherein: The instructions are also executable by the processor to cause the apparatus to: Sending sidelink control information to the first UE indicating scheduling information for the first UE, wherein the inter-UE coordination message indicates an updated preferred set of resources based at least in part on the scheduling information for the first UE.

23. The device according to claim 17, wherein: The inter-UE coordination message is received from the first UE on the beam according to a spatial filter, and the sidelink control signaling is sent according to the spatial filter.

24. The device according to claim 17, wherein: The instructions for receiving the inter-UE coordination message are executable by the processor to cause the apparatus to: Synchronization information associated with the first UE, system information associated with the first UE, or both are received on the beam.

25. The apparatus of claim 17, wherein: The instructions for receiving the inter-UE coordination message are executable by the processor to cause the apparatus to: A channel busy ratio measurement associated with the beam is received on the beam.

26. The device according to claim 25, wherein The instructions are also executable by the processor to cause the apparatus to: A request for the channel busy ratio measurement is sent for the beam, wherein receiving the channel busy ratio measurement is based at least in part on the request.

27. The device according to claim 26, wherein: The request for the channel busy ratio measurement indicates a transmission configuration indicator state for the beam, a spatial relationship for the beam, a spatial domain filter for the beam, the beam, or any combination thereof.

28. The device according to claim 25, wherein: The instructions are also executable by the processor to cause the apparatus to: A request for the inter-UE coordination message is sent, wherein receiving the channel busy ratio measurement is based at least in part on the request.

29. The device according to claim 25, wherein: The instructions are also executable by the processor to cause the apparatus to: A data transmission is sent on the beam based at least in part on one or more transmission parameters corresponding to the channel busy ratio measurement.

30. A method for wireless communication at a first user equipment (UE), comprising: sending, on each corresponding beam of one or more beams supported by the first UE, an inter-UE coordination message indicating a preferred set of resources associated with the beam, the preferred set of resources being used to receive sidelink control signaling associated with a random access procedure or a beam failure recovery procedure; receiving, on a beam of the one or more beams, the sidelink control signaling from a second UE according to the preferred set of resources associated with the beam; as well as A connection between the first UE and the second UE is established or modified based at least in part on the sidelink control signaling according to the random access procedure or the beam failure recovery procedure.

31. The method according to claim 30, wherein: Sending the inter-UE coordination message includes: An inter-UE coordination request is sent, the inter-UE coordination request instructing the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

32. The method of claim 31 further comprising: receiving, in response to the inter-UE coordination request, an indication of the one or more preferred resources in the second set of preferred resources, wherein the sidelink control signaling includes the indication; and The response to the sidelink control signaling is sent according to the one or more preferred resources in the second set of preferred resources.

33. The method of claim 30, wherein: Establishing or modifying the connection includes: In response to the sidelink control signaling, a beam failure recovery response associated with the beam failure recovery procedure or a random access response associated with the random access procedure is sent, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

34. A method for wireless communication at a first user equipment (UE), comprising: sending an inter-UE coordination message on a beam supported by the first UE, the inter-UE coordination message indicating a channel busy ratio measurement and a preferred set of resources associated with the beam for receiving sidelink signaling; and The sidelink signaling from the second UE is received on a beam of one or more beams supported by the first UE according to the preferred resource set associated with the beam.

35. The method of claim 34, wherein: The sidelink signaling is associated with a random access procedure or a beam failure recovery procedure.

36. The method of claim 34, wherein: The channel busy ratio measurement is associated with the one or more beams.

37. The method of claim 34, further comprising: A request for the channel busy ratio measurement is received, wherein sending the channel busy ratio measurement is based at least in part on the request.

38. The method of claim 37, wherein: The request for the channel busy ratio measurement indicates a transmission configuration indicator state for the one or more beams, a spatial relationship for the one or more beams, a spatial domain filter for the one or more beams, the one or more beams, or any combination thereof.

39. A method for wireless communication of a second user equipment (UE), comprising: receiving, on a beam used for sending sidelink control signaling associated with a random access procedure or a beam failure recovery procedure, an inter-UE coordination message indicating a preferred resource set associated with the beam; sending the sidelink control signaling to the first UE on the beam according to the preferred resource set associated with the beam; as well as Based at least in part on the sidelink control signaling, a connection between the first UE and the second UE is established or modified.

40. The method of claim 39, wherein: Receiving the inter-UE coordination message includes: An inter-UE coordination request is received, the inter-UE coordination request instructing the second UE to provide one or more preferred resources from a second set of preferred resources for receiving a response to the sidelink control signaling.

41. The method of claim 40, further comprising: sending, in response to the inter-UE coordination request, an indication of the one or more preferred resources in the second set of preferred resources, wherein the sidelink control signaling includes the indication; and The response to the sidelink control signaling is received according to the one or more preferred resources in the second set of preferred resources.

42. The method of claim 39, wherein: Establishing or modifying the connection includes: In response to the sidelink control signaling, a beam failure recovery response associated with the beam failure recovery procedure or a random access response associated with the random access procedure is received, wherein the sidelink control signaling includes a beam failure recovery signal or a random access signal.

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