Beam management block for sidelink

Abstract

In general, various aspects of the present disclosure relate to wireless communications. In some aspects, a user equipment (UE) may perform sensing in a sidelink resource pool. The UE may select one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, where each sidelink beam management block includes at least one reference signal and sidelink control information. The UE may transmit the one or more sidelink beam management blocks in the sidelink beam management block burst using the one or more sidelink resources. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Non-Provisional Patent Application No. 18 / 458,980, filed on August 30, 2023, entitled "BEAM MANAGEMENT BLOCK FOR SIDELINK", and U.S. Provisional Patent Application No. 63 / 375,903, filed on September 16, 2022, entitled "REFERENCE SIGNAL BLOCK FOR SIDELINK", and the above applications are assigned to the assignee of this application. The disclosure of the prior application is considered a part of this patent application and is incorporated into this patent application by reference. Technical Field

[0003]

[0011] Generally speaking, aspects of the present disclosure relate to wireless communications and to techniques and apparatus for a beam management block for a sidelink. Background Art

[0004] Wireless communication systems have been widely deployed to provide a variety of telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices such as one or more user equipments (UEs). A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, among other examples).

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a city-wide, national-wide, regional-wide and / or global scale. New Radio (NR) (which may also be referred to as 5G) is an enhanced set of LTE mobile standards released by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, making full use of new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink) to better integrate with other open standards, and support beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR and other radio access technologies remain effective. Summary of the invention

[0007] Some aspects described herein relate to an apparatus of a user equipment (UE) for wireless communication. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to perform sensing in a sidelink resource pool. The one or more processors may be configured to select one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block includes at least one beam management signal and sidelink control information (SCI). The one or more processors may be configured to send the one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources.

[0008] Some aspects described herein relate to an apparatus for a UE for wireless communication. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to monitor one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool. The one or more processors may be configured to receive the one or more sidelink beam management blocks in the sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and an SCI. The one or more processors may be configured to select a beam based at least in part on the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0009] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include: performing sensing in a sidelink resource pool. The method may include: selecting one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block includes at least one beam management signal and an SCI. The method may include: sending the one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources.

[0010] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include monitoring one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool. The method may include receiving the one or more sidelink beam management blocks in the sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and an SCI. The method may include selecting a beam based at least in part on the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0011] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: perform sensing in a sidelink resource pool. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: select one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block includes at least one beam management signal and an SCI. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: send the one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: monitor one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: receive the one or more sidelink beam management blocks in the sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and an SCI. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: select a beam based at least in part on the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for performing sensing in a sidelink resource pool. The apparatus may include means for selecting one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block includes at least one beam management signal and an SCI. The apparatus may include means for transmitting the one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for monitoring one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool. The apparatus may include: means for receiving the one or more sidelink beam management blocks in the sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and an SCI. The apparatus may include: means for selecting a beam based at least in part on the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0015] Some aspects described herein relate to a method of wireless communication performed by an apparatus of a UE. The method may include monitoring one or more sidelink beam management blocks (e.g., reference signal blocks (S-RSBs)) in an S-RSB burst in a sidelink resource pool. The method may include receiving the one or more S-RSBs in the S-RSB burst, wherein each S-RSB in the S-RSB burst includes at least one reference signal (RS) and an SCI. The method may include selecting a beam based at least in part on the one or more S-RSBs in the S-RSB burst.

[0016] Some aspects described herein relate to a method of wireless communication performed by an apparatus of a UE. The method may include: performing sensing in a sidelink resource pool. The method may include: selecting one or more sidelink resources for one or more S-RSBs based at least in part on the sensing, wherein each S-RSB includes at least one RS and an SCI. The method may include: sending the one or more S-RSBs in an S-RSB burst using the one or more sidelink resources.

[0017] Some aspects described herein relate to an apparatus for a UE for wireless communication. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to perform sensing in a sidelink resource pool. The one or more processors may be configured to select one or more sidelink resources for one or more S-RSBs based at least in part on the sensing, wherein each S-RSB includes at least one RS and an SCI. The one or more processors may be configured to send the one or more S-RSBs in an S-RSB burst using the one or more sidelink resources.

[0018] Some aspects described herein relate to an apparatus for a UE for wireless communication. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to monitor one or more S-RSBs in an S-RSB burst in a sidelink resource pool. The one or more processors may be configured to receive the one or more S-RSBs in the S-RSB burst, wherein each S-RSB in the S-RSB burst includes at least one RS and an SCI. The one or more processors may be configured to select a beam based at least in part on the one or more S-RSBs in the S-RSB burst.

[0019] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: perform sensing in a sidelink resource pool. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: select one or more sidelink resources for one or more S-RSBs based at least in part on the sensing, wherein each S-RSB includes at least one RS and an SCI. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: send the one or more S-RSBs in an S-RSB burst using the one or more sidelink resources.

[0020] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: monitor one or more S-RSBs in an S-RSB burst in a sidelink resource pool. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: receive the one or more S-RSBs in the S-RSB burst, wherein each S-RSB in the S-RSB burst includes at least one RS and an SCI. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform the following operations: select a beam based at least in part on the one or more S-RSBs in the S-RSB burst.

[0021] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for performing sensing in a sidelink resource pool. The apparatus may include: means for selecting one or more sidelink resources for one or more S-RSBs based at least in part on the sensing, wherein each S-RSB includes at least one RS and an SCI. The apparatus may include: means for sending the one or more S-RSBs in an S-RSB burst using the one or more sidelink resources.

[0022] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: a unit for monitoring one or more S-RSBs in an S-RSB burst in a sidelink resource pool. The apparatus may include: a unit for receiving the one or more S-RSBs in the S-RSB burst, wherein each S-RSB in the S-RSB burst includes at least one RS and an SCI. The apparatus may include: a unit for selecting a beam based at least in part on the one or more S-RSBs in the S-RSB burst.

[0023] In summary, various aspects include methods, apparatus, systems, computer program products, non-transitory computer-readable media, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to and as illustrated by the drawings and description.

[0024] The foregoing has been fairly broadly summarized according to the features and technical advantages of the examples of the present disclosure, so that the following detailed description can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for the same purpose of achieving the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood according to the description below. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, and is not intended to be a definition of the limitations of the claims.

[0025] Although various aspects are described in this application by the description of some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. Different platform types, devices, systems, shapes, sizes and / or packaging arrangements can be used to implement the innovation described herein. For example, some aspects can be implemented via integrated chip embodiments and other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchase equipment, medical devices and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The device incorporating the described aspects and features may include additional components and features for the realization and implementation of the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or adders). The innovation described herein is intended to be implemented in various devices, components, systems, distributed arrangements and / or end-user devices with different sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to understand the above-described features of the present disclosure in detail, the present application provides a more specific description with reference to some aspects for the above brief summary, some of which are illustrated in the accompanying drawings. However, it should be noted that since the specification permits other equivalent effective aspects, these drawings only depict certain typical aspects of the present disclosure, which should not be considered to limit the scope of protection of the present invention. The same reference numerals in different drawings may identify the same or similar elements.

[0027] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0028] Figure 2 is a diagram illustrating an example of a network node communicating with a user equipment (UE) in a wireless network according to the present disclosure.

[0029] Figure 3 is a diagram illustrating an example of sidelink communications according to the present disclosure.

[0030] Figure 4 is a diagram showing an example of sidelink communication and access link communication according to the present disclosure.

[0031] Figure 5 is a diagram illustrating an example of a channel state information reference signal beam management process according to the present disclosure.

[0032] Figure 6 is a diagram illustrating an example of sidelink messaging according to the present disclosure.

[0033] Figure 7 is a diagram showing an example associated with sensing and transmitting sidelink reference signal blocks (S-RSBs) according to the present disclosure.

[0034] Figure 8 is a diagram illustrating an example of a beam scanning pattern for beamforming according to the present disclosure.

[0035] Fig. 9 is a diagram illustrating an example of a beam scanning pattern for beam fine-tuning according to the present disclosure.

[0036] Fig.10 is a diagram illustrating an example of a beam scanning pattern for beam fine-tuning according to the present disclosure.

[0037] Fig.11 is a diagram illustrating an example of a beam scanning pattern according to the present disclosure.

[0038] Fig.12 is a diagram illustrating an example of a resource pool for S-RSB according to the present disclosure.

[0039] Fig.13 is a diagram showing an example of resources associated with beams according to the present disclosure.

[0040] Fig.14A and 14B is a diagram showing an example of S-RSB beam scanning according to the present disclosure.

[0041] Fig.15A and 15B is a diagram showing an example of S-RSB beam scanning for beam fine-tuning according to the present disclosure.

[0042] Fig.16 is a diagram illustrating an example process performed, for example, by a UE or an apparatus of a UE according to the present disclosure.

[0043] Fig.17 is a diagram illustrating an example process performed, for example, by a UE or an apparatus of a UE according to the present disclosure.

[0044] Fig.18 is a diagram of an example apparatus for wireless communications in accordance with the present disclosure. DETAILED DESCRIPTION

[0045] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in a variety of different forms, which should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, providing these aspects is only to make the present disclosure thorough and complete, and will fully convey the protection scope of the present disclosure to those of ordinary skill in the art. It should be understood by those of ordinary skill in the art that the protection scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, a device can be implemented or a method can be implemented using any number of aspects set forth herein. In addition, the protection scope of the present disclosure is intended to cover such a device or method, which can be implemented by using other structures, functions, or structures and functions of various aspects of the present disclosure set forth herein, or structures and functions of various aspects of the present disclosure set forth herein that are different from those set forth herein. It should be understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of the present claims.

[0046] Some aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and depicted in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0047] Although terms generally associated with 5G or new radio (NR) radio access technologies (RATs) are used herein to describe various aspects of the present disclosure, various aspects of the present disclosure may also be applied to other RATs (e.g., 3G RATs, 4G RATs, and / or post-5G RATs (e.g., 6G)).

[0048] Figure 11 is a schematic diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G network (e.g., Long Term Evolution (LTE)), etc., or may include elements of a 5G (e.g., NR) network and / or a 4G network (e.g., Long Term Evolution (LTE)), etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), one or more user equipments (UEs) 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, meaning that the converged network node is configured to utilize a radio protocol stack that is physically or locally integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning that the network node 110 is configured to utilize a protocol stack that is physically or locally distributed within two or more nodes (e.g., one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0049] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link (such as an RU). In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link (such as a DU). In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link (such as a CU). In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network device, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (e.g., direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0050] In some examples, the network node 110 can provide communication coverage for a specific geographic area. In the third generation partnership project (3GPP), the term "cell" can refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 can provide communication coverage for a macro cell, a micro cell, a femto cell, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access to UE 120 with a service subscription. A micro cell can cover a relatively small geographic area and can allow unrestricted access to UE 120 with a service subscription. A femto cell can cover a relatively small geographic area (e.g., a residence) and can allow limited access to UE 120 with an association with a femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell can be referred to as a macro network node. A network node 110 for a micro cell can be referred to as a micro network node. The network node 110 for a femto cell may be referred to as a femto network node or an in-home network node. Figure 1 In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0051] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a plurality of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of the functions, or to replicate the execution of at least a portion of the functions, and the term "base station" or "network node" may refer to any one or more of those different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0052] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and send transmissions of the data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0053] The wireless network 100 may be a heterogeneous network including different types of network nodes 110 (e.g., macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc.). These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different effects on interference in the wireless network 100. For example, macro network nodes may have higher transmit power levels (e.g., 5 to 40 watts), while pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 to 2 watts).

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

[0055] UE 120 can be dispersed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, access terminals, terminals, mobile stations, and / or user units. UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric authentication device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio device), a vehicle-mounted component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, a UE functional unit of a network node, and / or any other suitable device configured to communicate via a wireless medium or a wired medium.

[0056] Some UEs 120 may be considered as machine type communication (MTC) UEs or evolved or enhanced machine type communication (eMTC) UEs. For example, an MTC UE and / or an eMTC UE may include a robot, a drone, a remote device, a sensor, a meter, a monitor, and / or a location tag that can communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. The UE 120 may be included in a housing that houses components (e.g., processor components and / or memory components) of the UE 120. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operatively coupled, communicatively coupled, electrically coupled, and / or electronically coupled.

[0057] Generally, in a given geographic area, any number of wireless networks 100 may be deployed. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, an air interface, etc. A frequency may be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

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

[0059] Devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various categories, bands, channels, etc., by frequency or wavelength. For example, devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range names FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as a “below 6 GHz” band in various documents and articles. Similar naming issues sometimes arise with respect to FR2, which is often (interchangeably) referred to as a “millimeter wave” band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz), and the EHF band is identified as a “millimeter wave” band by the International Telecommunication Union (ITU).

[0060] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified an operating band for these mid-band frequencies as the frequency range designation FR3 (7.125 GHz–24.25 GHz). Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and may therefore effectively extend the characteristics of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as the frequency range designations FR4a or FR4–1 (52.6 GHz–71 GHz), FR4 (52.6 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0061] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, it can broadly refer to frequencies that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, it can broadly refer to frequencies that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or can be within the EHF band. It is expected that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0062] In some aspects, the first UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may perform sensing in a sidelink resource pool. The communication manager 140 may select one or more sidelink resources for one or more sidelink beam management blocks (e.g., reference signal blocks (S-RSBs)) based at least in part on the sensing, wherein each sidelink beam management block includes at least one beam management signal and sidelink control information (SCI). The communication manager 140 may send one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0063] In some aspects, the second UE (e.g., UE 120) may include a communications manager 140. As described in more detail elsewhere herein, the communications manager 140 may monitor one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool. The communications manager may receive one or more sidelink beam management blocks in a sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and an SCI. The communications manager 140 may select a beam based at least in part on one or more sidelink beam management blocks in the sidelink beam management block burst. Additionally or alternatively, the communications manager 140 may perform one or more other operations described herein.

[0064] As noted above, Figure 1 is provided as an example. Other examples may differ from those described above. Figure 1 Examples described.

[0065] Figure 2 1 is a schematic diagram illustrating an example 200 in which a network node 110 communicates with a UE 120 in a wireless network 100. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T (T≥1) antennas. The UE 120 may be equipped with a set of antennas 252a to 252r, such as R (R≥1) antennas. The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs, or one or more DUs.

[0066] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​these data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and provide a set of output symbol streams (e.g., T output symbol streams) to a set of corresponding modems 232 (e.g., T modems, shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a respective output symbol stream (e.g., for OFDM) using a respective modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a respective modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas, shown as antennas 234a through 234t).

[0067] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110, and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a respective demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modulator 254, perform MIMO detection on the received symbols (if applicable), and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other examples. In some examples, one or more components of the UE 120 may be included in a housing.

[0068] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. For example, the network controller 130 may include one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0069] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or may be included in one or more antenna panels, one or more antenna groups, one or more antenna element sets, and / or one or more antenna arrays, among other examples. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), coplanar antenna element sets, non-coplanar antenna element sets, and / or antennas coupled to one or more transmit and / or receive components (such as Figure 2 One or more antenna elements of one or more components).

[0070] On the uplink, at the UE 120, the transmit processor 264 may receive data from the data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280, and process the data and control information. The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by the modulator 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. A processor (eg, controller / processor 280) and memory 282 may use a transceiver to perform aspects of any of the methods described herein (eg, with reference to Figure 3-18 ).

[0071] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the demodulator 232 (e.g., a demodulator component, shown as DEMOD of the modem 232), detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of an antenna 234, a modem 232, a MIMO detector 236, a receive processor 238, a transmit processor 220, and / or a TX MIMO processor 230. A processor (e.g., controller / processor 240) and a memory 242 may use the transceiver to perform aspects of any of the methods described herein (e.g., referring to Figure 3-18 ).

[0072] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components in the network node 110 may perform one or more techniques associated with beam sweeping S-RSB, as described in more detail elsewhere herein. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in may perform or direct e.g. Fig.16 The process of 1600 Fig.17 1700 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion, and / or interpretation), may cause one or more processors, UE 120, and / or network node 110 to perform or instruct, for example Fig.16 The process of 1600 Fig.17 The process 1700 and / or operations of other processes as described herein. In some examples, executing instructions can include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, among other examples.

[0073] In some aspects, the UE 120 includes: means for performing sensing in a sidelink resource pool; means for selecting one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block includes at least one beam management signal and an SCI; and / or means for sending one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources. Means for the UE 120 to perform operations described herein may include, for example, one or more of the communications manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0074] In some aspects, UE 120 includes: a unit for monitoring one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool; a unit for receiving one or more sidelink beam management blocks in a sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and an SCI; and / or a unit for selecting a beam based at least in part on one or more sidelink beam management blocks in the sidelink beam management block burst.

[0075] In some aspects, individual processors may perform all functions described as being performed by one or more processors. In some aspects, one or more processors may collectively perform a set of functions. For example, a first group (one or more) of processors in one or more processors may perform a first function described as being performed by one or more processors, and a second group (one or more) of processors in one or more processors may perform a second function described as being performed by one or more processors. The first group of processors and the second group of processors may be the same group of processors, or may be different groups of processors. References to "one or more processors" should be understood to refer to the combination of Figure 2 Any one or more processors described. Figure 2 The memory in the embodiment may include one or more memories. Reference to "one or more memories" should be understood to refer to any one or more memories of the corresponding device, such as in conjunction with Figure 2 For example, functions described as being performed by one or more memories may be performed by the same subset of the one or more memories or by a different subset of the one or more memories.

[0076] Although Figure 2 The blocks in the 200 and 210 are shown as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0077] As noted above, Figure 2 is provided as an example. Other examples may differ from those described above. Figure 2 Examples described.

[0078] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways using various components or constituent parts. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station, or a network device can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP, or a cell, and other examples) or one or more units (or one or more components) performing base station functions can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. A "network entity" or a "network node" may refer to a decomposed base station or to one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0079] An aggregated base station (e.g., an aggregated network node) can be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) can be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU can be implemented within a network node, and one or more DUs can be co-located with the CU, or alternatively, can be geographically or virtually distributed in one or more other network nodes. A DU can be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual unit (such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), as well as other examples).

[0080] Base station type operations or network designs may take into account the aggregated nature of base station functions. For example, a decomposed base station may be used in an IAB network, an open radio access network (O-RAN (such as a network configuration sponsored by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate expansion of the communication system by separating base station functions into one or more units that can be deployed separately. A decomposed base station may include functions implemented across two or more units at various physical locations and functions implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0081] Figure 3 is a diagram illustrating an example 300 of sidelink communications in accordance with the present disclosure.

[0082] like Figure 3 As shown, the first UE 305-1 can communicate with the second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. UE 305-1 and 305-2 can use one or more sidelink channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication and / or V2P communication) and / or mesh network to communicate. In some aspects, UE 305 (e.g., UE 305-1 and / or UE 305-2) can correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more sidelink channels 310 can use PC5 interface and / or can operate in high frequency band (e.g., 5.9 GHz band). In addition or alternatively, UE 305 can use global navigation satellite system (GNSS) timing to synchronize the timing of transmission time interval (TTI) (e.g., frame, subframe, time slot or symbol).

[0083] like Figure 3 As further shown, the one or more sidelink channels 310 may include a physical sidelink control channel (PSCCH) 315, a physical sidelink shared channel (PSSCH) 320, and / or a physical sidelink feedback channel (PSFCH) 325. Similar to a physical downlink control channel (PDCCH) and / or a physical uplink control channel (PUCCH) used for cellular communication with the network node 110 via an access link or access channel, the PSCCH 315 may be used to transmit control information. Similar to a physical downlink shared channel (PDSCH) and / or a physical uplink shared channel (PUSCH) used for cellular communication with the network node 110 via an access link or access channel, the PSSCH 320 may be used to transmit data. For example, the PSCCH 315 may carry an SCI 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, and / or space resources), where a transport block (TB) 335 may be carried on the PSSCH 320. The TB 335 may include data. The PSFCH 325 may be used to transmit sidelink feedback 340, such as hybrid automatic repeat request (HARQ) feedback (eg, acknowledgement or negative acknowledgement (ACK / NACK) information), transmit power control (TPC), and / or scheduling request (SR).

[0084] Although shown on the PSCCH 315, in some aspects the SCI 330 may include multiple communications in different phases, such as a first phase SCI (SCI-1) and a second phase SCI (SCI-2). The SCI-1 may be transmitted on the PSCCH 315. The SCI-2 may be transmitted on the PSSCH 320. The SCI-1 may include, for example, an indication of one or more resources (e.g., time resources, frequency resources, and / or space resources) on the PSSCH 320, information for decoding sidelink communications on the PSSCH, a quality of service (QoS) priority value, a resource reservation period, a PSSCH demodulation reference signal (DMRS) pattern, an SCI format for SCI-2, a beta offset for SCI-2, a number of PSSCH DMRS ports, and / or a modulation and coding scheme (MCS). SCI-2 may include information associated with data transmission on the PSSCH 320, such as a hybrid automatic repeat request (HARQ) process ID, a new data indicator (NDI), a source identifier, a destination identifier, and / or a channel state information (CSI) report trigger.

[0085] In some aspects, one or more sidelink channels 310 may use a resource pool. For example, a scheduling assignment (e.g., included in SCI 330) may be sent in a subchannel using specific resource blocks (RBs) across time. In some aspects, a data transmission associated with a scheduling assignment (e.g., on PSSCH 320) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, a scheduling assignment and associated data transmission are not sent on adjacent RBs.

[0086] In some aspects, the UE 305 may operate using a sidelink resource allocation mode (e.g., Mode 1) in which resource selection and / or scheduling is performed by a network node 110 (e.g., a base station, CU, or DU). For example, the UE 305 may receive a grant for sidelink channel access and / or scheduling from the network node 110 (e.g., directly or via one or more network nodes) (e.g., in downlink control information (DCI) or in a radio resource control (RRC) message, such as for a configured grant). In some aspects, the UE 305 may operate using a resource allocation mode (e.g., Mode 2) in which resource selection and / or scheduling is performed by the UE 305 (e.g., instead of the network node 110). In some aspects, the UE 305 may perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 305 may measure RSSI parameters associated with various sidelink channels (e.g., sidelink RSSI (S-RSSI) parameters), may measure RSRP parameters associated with various sidelink channels (e.g., PSSCH-RSRP parameters), and / or may measure RSRQ parameters associated with various sidelink channels (e.g., PSSCH-RSRQ parameters), and may select a channel for transmission of sidelink communications based at least in part on the measurements.

[0087] Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling using the SCI 330 received in the PSCCH 315, which may indicate occupied resources and / or channel parameters. Additionally or alternatively, the UE 305 may perform resource selection and / or scheduling by determining a channel busy rate (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating a maximum number of resource blocks that the UE 305 may use for a particular set of subframes).

[0088] In a resource allocation mode in which resource selection and / or scheduling is performed by the UE 305, the UE 305 may generate a sidelink grant and may send the grant in the SCI 330. The sidelink grant may indicate, for example, one or more parameters (e.g., transmission parameters) for an upcoming sidelink transmission, such as one or more resource blocks (e.g., for TB 335) to be used for the upcoming sidelink transmission on the PSSCH 320, one or more subframes to be used for the upcoming sidelink transmission, and / or a modulation and coding scheme (MCS) to be used for the upcoming sidelink transmission. In some aspects, the UE 305 may generate a sidelink grant that indicates one or more parameters for semi-persistent scheduling (SPS), such as a periodicity of the sidelink transmission. Additionally or alternatively, the UE 305 may generate a sidelink grant for event-driven scheduling (e.g., for an on-demand sidelink message).

[0089] As noted above, Figure 3 is provided as an example. Other examples may differ from those described above. Figure 3 Examples described.

[0090] Figure 4 is a diagram illustrating an example 400 of sidelink and access link communications in accordance with the present disclosure.

[0091] like Figure 4 As shown, Tx / receiver (Rx) UE 405 and Rx / Tx UE 410 can communicate with each other via a side link, as described above in conjunction with Figure 3 As further shown, in some sidelink modes, the network node 110 can communicate with the Tx / Rx UE 405 (e.g., directly or via one or more network nodes), for example, via a first access link. Additionally or alternatively, in some sidelink resource allocation modes, the network node 110 can communicate with the Rx / Tx UE 410 (e.g., directly or via one or more network nodes), for example, via a first access link. The Tx / Rx UE 405 and / or the Rx / Tx UE 410 can correspond to one or more UEs described elsewhere herein, such as Figure 1 120. Thus, a direct link between UEs 120 (e.g., via a PC5 interface) may be referred to as a sidelink, and a direct link between network node 110 and UE 120 (e.g., via a Uu interface) may be referred to as an access link. Sidelink communications may be sent via a sidelink, and access link communications may be sent via an access link. Access link communications may be downlink communications (from network node 110 to UE 120) or uplink communications (from UE 120 to network node 110).

[0092] As noted above, Figure 4 is provided as an example. Other examples may differ from those described above. Figure 4 Examples described.

[0093] Figure 5 5 is a diagram illustrating examples 500, 510, and 520 of a CSI-RS beam management process according to the present disclosure. Figure 5 As shown, examples 500, 510, and 520 include a UE 120 communicating with a network node 110 in a wireless network (e.g., wireless network 100). Figure 5 The devices shown in are provided as examples, and the wireless network may support communication and beam management between other devices (e.g., between UE 120 and network node 110 or TRP, between mobile terminal node and control node, between IAB child node and IAB parent node, and / or between scheduled node and scheduling node). In some aspects, UE 120 and network node 110 may be in a connected state (e.g., RRC connected state).

[0094] The network node 110 may send a synchronization signal block (SSB) to the UE. The SSB may carry information used by the UE for initial network acquisition and synchronization, such as PSS, SSS, physical broadcast channel (PBCH), and PBCH DMRS. The SSB is sometimes referred to as a synchronization signal / PBCH (SS / PBCH) block. In some aspects, the network node 110 may send multiple SSBs on multiple corresponding beams, and the SSBs may be used for beam selection.

[0095] like Figure 5 As shown, example 500 may include a network node 110 (e.g., one or more network node devices, such as RU, DU, and / or CU, among other examples) and a UE 120 communicating to perform beam management using CSI-RS. Example 500 depicts a first beam management process (e.g., P1 beam management). The first beam management process may be referred to as a beam selection process, an initial beam acquisition process, a beam scanning process, a cell search process, and / or a beam search process. Figure 5 As shown in example 500, CSI-RS may be configured to be sent from network node 110 to UE 120. CSI-RS may be configured to be periodic (e.g., using RRC signaling), semi-persistent (e.g., using medium access control (MAC) control element (MAC-CE) signaling), and / or aperiodic (e.g., using DCI).

[0096] The first beam management process may include the network node 110 performing beam scanning on multiple Tx beams. The network node 110 may use each transmit beam for beam management to send CSI-RS. In order to enable the UE 120 to perform Rx beam scanning, the network node may use the transmit beam to send each CSI-RS multiple times (e.g., with repetitions) within the same RS resource set, so that the UE 120 can sweep the receive beam in multiple transmission instances. For example, if the network node 110 has a set of N transmit beams and the UE 120 has a set of M receive beams, the CSI-RS may be sent M times on each of the N transmit beams, so that the UE 120 can receive M instances of the CSI-RS for each transmit beam. In other words, for each transmit beam of the network node 110, the UE 120 can perform beam scanning on the receive beam of the UE 120. Thus, the first beam management process may enable UE 120 to measure CSI-RS on different transmit beams using different receive beams to support selection of a network node 110 transmit beam / UE 120 receive beam pair. UE 120 may report the measurements to network node 110 to enable network node 110 to select one or more beam pairs for communication between network node 110 and UE 120. Although example 500 has been described in conjunction with CSI-RS, the first beam management process may also use SSB for beam management in a similar manner as described above.

[0097] like Figure 5 As shown, example 510 may include network node 110 and UE 120 communicating to perform beam management using CSI-RS. Example 510 depicts a second beam management process (e.g., P2 beam management). The second beam management process may be referred to as a beam refinement process, a network node beam refinement process, a TRP beam refinement process, and / or a transmit beam refinement process. Figure 5As shown in example 510, the CSI-RS may be configured to be sent from the network node 110 to the UE 120. The CSI-RS may be configured to be aperiodic (e.g., using DCI). The second beam management process may include the network node 110 performing beam scanning on one or more transmit beams. The one or more transmit beams may be a subset of all transmit beams associated with the network node 110 (e.g., determined at least in part based on measurements reported by the UE 120 in conjunction with the first beam management process). The network node 110 may use each of the one or more transmit beams for beam management to send the CSI-RS. The UE 120 may measure each CSI-RS using a single (e.g., the same) receive beam (e.g., determined at least in part based on measurements performed in conjunction with the first beam management process). The second beam management process may enable the network node 110 to select the best transmit beam based at least in part on measurements of the CSI-RS reported by the UE 120 (e.g., measured by the UE 120 using a single receive beam).

[0098] like Figure 5 As shown, example 520 depicts a third beam management process (e.g., P3 beam management). The third beam management process may be referred to as a beam refinement process, a UE beam refinement process, and / or a receive beam refinement process. Figure 5 As shown in example 520, one or more CSI-RS may be configured to be sent from the network node 110 to the UE 120. The CSI-RS may be configured to be non-periodic (e.g., using DCI). The third beam management process may include the network node 110 sending one or more CSI-RS using a single transmit beam (e.g., determined based at least in part on measurements reported by the UE 120 in conjunction with the first beam management process and / or the second beam management process). In order to enable the UE 120 to perform receive beam scanning, the network node may use the transmit beam to send the CSI-RS multiple times (e.g., with repetitions) within the same RS resource set, so that the UE 120 can sweep across one or more receive beams in multiple transmission instances. The one or more receive beams may be a subset of all receive beams associated with the UE 120 (e.g., determined based at least in part on measurements performed in conjunction with the first beam management process and / or the second beam management process). The third beam management process may enable the network node 110 and / or the UE 120 to select the best receive beam based at least in part on reported measurements received from the UE 120 (eg, CSI-RS of a transmit beam using one or more receive beams).

[0099] Similar beam management procedures may be used for sidelink beam management operations between UEs. Sidelink beam management operations may include initial beam pairing or beamforming, beam fine-tuning, beam maintenance, and beam failure recovery. Beam fine-tuning may involve selection of a beam direction and limited beam scanning around the beam direction. Limited beam scanning may use narrower beams and / or more granularity in the beam direction.

[0100] As noted above, Figure 5 is provided as an example of a beam management process. Other examples of beam management processes may be related to Figure 5 For example, UE 120 and network node 110 may perform the third beam management procedure before performing the second beam management procedure, and / or UE 120 and node 110 may perform a similar beam management procedure to select a UE transmit beam.

[0101] Figure 6 are diagrams illustrating examples 600, 602, and 604 of sidelink messaging according to the present disclosure.

[0102] Sidelink beam management may involve synchronization timing between UEs. The sidelink synchronization process may define a hierarchy of priorities associated with different synchronization references and require all UEs to continuously search the hierarchy to obtain the highest quality synchronization reference that can be found. When the UE cannot find any other synchronization reference (such as a global navigation satellite system (GNSS) or a base station) directly or indirectly (relay), the UE may use its own internal clock to send an NR sidelink synchronization signal block (S-SSB). Example 600 shows that the S-SSB may include a physical sidelink broadcast channel (PSBCH), a sidelink primary synchronization signal (S-PSS), and a sidelink secondary synchronization signal (S-SSS) on almost all of the 14 symbols of a time slot. The UE may send one or more S-SSBs with a period of 160 milliseconds (ms) based on a digital scheme used to communicate on the sidelink channel.

[0103] The UE may also send NR SCI. Example 602 shows a first stage SCI on PSCCH (2 symbols) transmitted with PSSCH. The SCI indicates the time-frequency resources reserved for future transmissions with PSSCH. The SCI transmission is used by the sensing UE to maintain a record of which resources have been reserved by other UEs in the recent past. For semi-persistent scheduling (SPS) on the sidelink, the resource reservation period field may indicate the time interval for future periodic transmissions. Example 604 shows a 3-symbol PSCCH.

[0104] The UE may send NR sidelink CSI reports. For sidelink link adaptation and rank adaptation in unicast transmissions, the transmitting UE may send a sidelink CSI reference signal (CSI-RS) multiplexed with the PSSCH transmission. The CSI request field (e.g., in SCI Part 2) may indicate an aperiodic sidelink CSI report from a receiving UE (via a medium access control control element (MAC CE)). The transmitting UE waits for the next CSI report from a given receiving UE to be triggered until the previous report has been received or the latency limit has expired.

[0105] For the Uu downlink, the base station (e.g., gNB) can scan SSBs or CSI-RS with different transmit beams for beamforming and fine-tuning, beam monitoring through measurement, and candidate beam detection for beam recovery. However, for sidelink communications, due to the control of the sidelink synchronization reference quality, only synchronization reference (SyncRef) UEs are allowed to send sidelink SSBs. A SyncRef UE is a UE that has not received any SSBs and has determined to use its own clock to send SSBs. Non-SyncRef UEs or sidelink UEs that do not provide synchronization assistance may cause interference to the synchronization reference when scanning sidelink SSBs on different beams for beam management, similar to the base station periodically scanning SSBs on the Uu interface for beam management.

[0106] For sidelink unicast, the transmitting UE may send a sidelink CSI-RS on the PSSCH together with the data transmission. Therefore, the transmitting UE may need to scan the sidelink CSI-RS with different beams at the granularity of a time slot. This scanning may require multiple time slots (one time slot for each beam direction), which will increase the delay of beamforming, beam measurement, or beam recovery. Similarly, as shown in Example 600, almost all 14 symbols are used for each SSB. If such an SSB is sent in each beam direction of the beam scan, a large amount of signaling resources is consumed. In sidelink resource allocation mode 2 without base station coordination, resource consumption may have a greater impact. Compared with beam scanning for Uu, sidelink SSB may consume 3-4 times the resources. Multiple UEs transmitting large SSBs in beam scanning mode can also generate a lot of interference. In addition, with more dynamic channels in FR2 frequencies, beamforming or beam switching may occur more frequently. This may increase latency, resource usage and interference.

[0107] As noted above, Figure 6 is provided as an example. Other examples may differ from those described above. Figure 6 Examples described.

[0108] Figure 7is a diagram illustrating an example 700 associated with sensing and transmitting S-RSBs according to the present disclosure. Figure 7 As shown, a first UE 710 (eg, UE 120) and a second UE 720 (eg, UE 120) may communicate with each other over a sidelink channel.

[0109] According to various aspects described herein, a sidelink UE may perform sensing-based beam scanning and send a sidelink beam management block based on the sensing, such as a beam shorter than Figure 6 The S-RSBs (eg, S-RSB 702, S-RSB 704) of the sidelink SSB 600 are shown. In this manner, the sidelink UE can save power and signaling resources while reducing interference and latency.

[0110] The sidelink beam management block may include at least one beam management signal and an SCI. The beam management signal may include a signal for beam management, such as a reference signal or a sequence for a reference signal. In some aspects, the beam management signal may include a synchronization signal or a sequence for a synchronization signal. The sidelink beam management block may include a plurality of symbols, such as a symbol for a beam management signal and a symbol for an SCI. Another symbol may be used for another beam management signal, such as a beam management signal for beamforming, beam fine-tuning, or beam measurement.

[0111] In one example, the S-RSB may include at least one reference signal (RS) and SCI, which other UEs may use for beam management (e.g., using RS) and resource sensing for beam scanning or sidelink communication (e.g., based at least in part on resource reservations indicated in the SCI or measurements such as RSSI, RSRP, RSRQ, or signal to interference plus noise ratio (SINR)). For example, the S-RSB 702 is 3 symbols and includes a first RS that may be used for automatic gain control (AGC), a one-symbol SCI, and a second RS for other beam management operations. The second RS may be used for beamforming, beam fine-tuning, and / or beam measurement. The second RS may be the same as or different from the first RS. The first RS and / or the second RS may be a Zadoff–Chu (ZC) sequence or at least one m-sequence mapped to each resource element or subcarrier of x physical resource blocks (PRBs) or subchannels (e.g., for a sequence similar to a synchronization signal generated using an identifier for beam management), similar to a Uu synchronization signal. The RS may be a pseudo-random sequence that is continuously mapped (e.g., with a density of 1) or discontinuously mapped on y PRBs or subchannels (e.g., an even number of PRBs with a density of 0.5), similar to the Uu CSI-RS (e.g., a sequence of similar reference signals initiated with an identifier for beam management). The ZC sequence may be used for synchronization of LTE. The m sequence may be used for synchronization of NR. The pseudo-random sequence may be a sequence of RS (e.g., DMRS, CSI-RS). In some aspects, the sidelink beam management block may include the SCI and one or more other types of synchronization signals that may be used for sidelink beam management.

[0112] The SCI may indicate time and frequency resources reserved for one or more sidelink beam management block transmissions (e.g., S-RSB transmissions), respectively. The SCI may indicate time and frequency resources reserved for future S-RSB transmissions in one or more S-RSB bursts (e.g., non-repeating, non-periodic) or a semi-persistent schedule (SPS) for future sidelink beam management block bursts (e.g., semi-periodic S-RSB bursts with a repetitive period or time interval), so that other UEs are aware of one or more S-RSB bursts (e.g., non-periodic) or an S-RSB transmission pattern (e.g., semi-periodic) of an S-RSB burst at the reserved resources. Other UEs may schedule transmissions and / or receptions around the received sidelink beam management block (e.g., based on decoded SCI or measurements of S-RSB transmissions received within one or more S-RSB bursts) to avoid transmission conflicts (e.g., conflicts between S-RSB bursts from different UEs or conflicts between S-RSB bursts and other sidelink communications such as beam reports from different UEs). In addition, the SCI may include beam information (e.g., a transmission configuration indicator (TCI) state with a quasi-co-location (QCL) type (such as type A or type D), or a spatial filter for special receive beam parameters or for beam association or correspondence, a beam identifier or beam index for sending a sidelink beam management block for beam association or resource mapping) and sidelink beam management block information, such as S-RSB information (e.g., an S-RSB index of an S-RSB within an S-RSB burst for beam association or resource mapping, an S-RSB structure or configuration for the UE to identify the correct S-RSB burst. The S-RSB structure or configuration information may include an S-RSB configuration index (e.g., a code point of an S-RSB burst duration and an S-RSB burst period based at least in part on a digital scheme combination configured for a sidelink bandwidth part (BWP). The SCI may include a source identifier (ID), such as a layer 1 (L1) source ID of a transmitter for identifying one or more sidelink beam management block bursts (e.g., an S-RSB burst). For example, the Rx UE may determine whether to pair a receive beam with a transmit beam of the Tx UE and whether to report beam measurements to the Tx UE based at least in part on the ID of the Tx UE. The SCI may include a destination ID, such as an L1 destination ID for identifying the Rx UE, which the Tx UE may utilize for beam scanning for transmit beam fine-tuning or receive beam fine-tuning. The SCI may indicate the type of beam management operation, whether initial beamforming, beam fine-tuning of a transmit (Tx) beam, beam fine-tuning of a receive (Rx) beam, beam measurement, or beam recovery (e.g., the Rx UE may detect a correct S-RSB burst for beamforming or beam fine-tuning).In another example, the S-RSB 704 spans 4 symbols and includes 2 symbols of the SCI. The SCI may include SCI part 1 and SCI part 2. SCI part 2 (carried on the PSSCH, e.g., Figure 6 The preferred resource or non-preferred resource associated with the S-RSB of the S-RSB burst may be indicated in FIG. 1 . Alternatively, SCI part 2 may include a source ID, a destination ID, and / or other identifiers or information for beam management operations. If the S-RSB is 4 symbols, SCI part 2 may be included in the third symbol (and may be part of the second symbol). The second RS may be included in the fourth symbol. In some aspects, the RS signal may be interleaved with SCI part 1 and / or SCI part 2 having a comb structure.

[0113] Example 700 illustrates sensing of transmissions involving beam scanning and sidelink beam management blocks (such as S-RSBs). As indicated by reference numeral 725, UE 710 may perform sensing (e.g., based at least in part on decoding an SCI having each S-RSB and / or sidelink RSRP, RSSI, or RSRQ measurement for reserved resources) to sense or detect reserved resources or resource patterns for S-RSB bursts sent or to be sent by other UEs in a sidelink resource pool. UE 710 may then select resources or resource patterns from the sidelink resource pool that can be used to send one or more S-RSB bursts without colliding with S-RSB bursts of other UEs. This may include sensing using beam scanning in multiple directions, for example, covering an angular range of S-RSB bursts of UE 710. As indicated by reference numeral 730, UE 710 may select sidelink resources (e.g., time and frequency resources) for S-RSBs based at least in part on selected resources or resource patterns that can be used to send one or more S-RSB bursts. UE 720 may select sidelink resources from the sidelink resource pool to avoid collision with S-RSB bursts of other UEs on the same resources with a particular beam direction.

[0114] As shown in reference numeral 735, UE 710 may send one or more S-RSBs in one or more S-RSB bursts in a beam scanning mode. UE 710 may send S-RSBs using the selected sidelink resources. Each S-RSB may have an S-RSB index or S-RSB resource indication (e.g., for beam association or resource mapping) within the S-RSB burst. The S-RSB burst may be constructed or configured with a burst offset 770 (e.g., a starting point within a subframe or frame), a burst offset time slot 772 (e.g., a starting point within a time slot), an S-RSB interval 774 between adjacent S-RSBs (e.g., in symbols), a burst duration 776 of an S-RSB burst (e.g., in time slots or subframes, in frames, in absolute time), the number of S-RSBs 778 within an S-RSB burst, and / or a burst period 780 between S-RSB bursts (e.g., a time slot, a subframe, a frame, or a time period in absolute time). There may be S-RSB burst structures or configurations for beamforming and S-RSB burst structures or configurations for other operations such as beam fine-tuning. The S-RSB within an S-RSB burst may indicate structure or configuration information (e.g., an S-RSB configuration index). Additionally or alternatively, an S-RSB burst structure or configuration may be specified, preconfigured, or configured for one or more sidelink services based at least in part on a digital scheme with a sidelink BWP. In this case, the UE may select resources for one or more S-RSB bursts based at least in part on an S-RSB burst structure or configuration with associated resources in a resource pool without the need for SCI-based resource sensing and selection (e.g., the SCI may be excluded from S-RSB transmissions of one or more S-RSB bursts).

[0115] UE 710 may send one or more S-RSB bursts in a sidelink resource pool. The sidelink resource pool may be used for sidelink beam management. The sidelink resource pool may be dedicated to S-RSB bursts. The sidelink resource pool for S-RSB bursts may be frequency division multiplexed (FDM) or time division multiplexed (TDM) with other transmit and / or receive pools. As shown in reference numeral 740, UE 720 may be monitoring S-RSBs in the sidelink resource pool.

[0116] In some aspects, the UE 720 may receive one or more S-RSB bursts using a receive beam (e.g., using a receive beam for one or more S-RSB bursts with a transmit beam set) or a receive beam scanning mode (e.g., using a first receive beam for a first S-RSB burst with a transmit beam set, using a second receive beam for a second S-RSB burst with a transmit beam set, and so on). The receive beam scanning mode may also be used for receive beam fine-tuning (e.g., scanning a receive beam for an S-RSB burst using a fixed transmit beam). As indicated by reference numeral 745, the UE 720 may select a beam based at least in part on the S-RSB. The UE 720 may select a beam based at least in part on a measurement of the S-RSBs in one or more S-RSB bursts (e.g., a beam with the highest RSRP, RSRQ, SINR measurement or a beam with an RSRP, RSRQ, or SINR measurement above a pre-configured, configured, or activated threshold). The UE 720 may select an S-RSB or a beam associated with an S-RSB in one or more S-RSB bursts using a receive beam paired with a selected beam as part of a beam pair link. The S-RSB with the best measurement may be associated with the best transmit beam or receive beam for beam selection during initial beamforming or transmit / receive beam fine-tuning or candidate beam selection for beam recovery.

[0117] Measurements of different S-RSBs associated with different beams used for beam monitoring can be used to determine beam switching during beam maintenance or beam recovery based on the reported measurements. Some examples are provided. In some aspects associated with initial beamforming, UE 720 can scan transmit beams with different S-RSB transmissions in an S-RSB burst. UE 720 (a receiving UE for S-RSB transmission) can use a first receive beam to measure all S-RSBs sent on different transmit beams of UE 710 (a transmitting UE for S-RSB transmission) during a first S-RSB burst, and select a first transmit beam associated with a first S-RSB with a first best measurement (e.g., the highest RSRP, RSRQ, or SINR). UE 720 can use a second receive beam to measure all S-RSBs sent on different transmit beams of UE 710 during a second S-RSB burst, and select a second transmit beam associated with a second S-RSB with a second best measurement, and so on. The UE 720 may select a best transmit beam among the first transmit beam, the second transmit beam, etc., having the highest measurement among the first best measurement, the second best measurement, etc., etc. The UE 720 may select a receive beam for measuring an S-RSB associated with the best transmit beam based at least in part on the best measurement, or select a best receive beam among the first receive beam, the second receive beam, etc.

[0118] In some aspects associated with initial beamforming, the UE 720 may scan receive beams with the same S-RSB transmission on a transmit beam in an S-RSB burst. The UE 720 (receiving UE for S-RSB transmission) may measure a first S-RSB using a first receive beam and a second S-RSB using a second Rx beam, and so on, where all S-RSBs are transmitted with a first S-RSB burst on a first transmit beam of the UE 710 (transmitting UE for S-RSB transmission), and a first receive beam associated with a first best measurement (e.g., highest RSRP, RSRQ, or SINR) of a first S-RSB burst on the first transmit beam is selected. The UE 720 may select a second receive beam associated with a second best measurement of a second S-RSB burst on a second transmit beam, and so on. The UE 720 may select a best receive beam with the highest measurement of the first best measurement, the second best measurement, and so on, among the first receive beam, the second receive beam, and so on. UE 720 may select a transmit beam for transmitting the S-RSB burst associated with the highest measurement (eg, select the best transmit beam of the first transmit beam, the second transmit beam, etc.).

[0119] In some aspects associated with utilizing a receive beam for transmit beam fine-tuning, the UE 720 may scan transmit beams having different S-RSB transmissions (monitored using a receive beam) in one or more S-RSB bursts, and select the best transmit beam associated with the S-RSB having the best measurement. In some aspects associated with utilizing a transmit beam for receive beam fine-tuning, the UE 720 may scan receive beams having the same S-RSB transmission on a transmit beam in one or more S-RSB bursts, and select the best receive beam associated with the S-RSB having the best measurement.

[0120] In some aspects associated with transmit beam monitoring with receive beams, similar to transmit beam scanning or monitoring transmit beam fine-tuning, the report may include measurements of all transmit beams (rather than the selected transmit beam based on the best measurement). In this case, the UE 710 may determine transmit beam switching based on the received measurement report. In some aspects associated with candidate beam selection for beam recovery, the UE 720 may scan the transmit beam like transmit beam fine-tuning, or scan the receive beam like receive beam fine-tuning, or scan both the transmit beam and receive beam like initial beamforming. The report may include the selected transmit or receive beam (such as initial beamforming or transmit / receive beam fine-tuning (beam selection is performed by the UE 720)) or beam measurement (such as beam monitoring (beam selection is performed by the UE 710 based on the received measurement report)).

[0121] The UE 720 may communicate using the selected beam. For example, in some aspects, the UE 720 may perform sensing of sidelink communications, as shown in reference numeral 750. As shown in reference numeral 755, the UE 720 may select resources (e.g., time and frequency) for sidelink communications based at least in part on the selected beam. The UE 720 may sense the resource set and select resources from the resource set based at least in part on a configured duration after an S-RSB in one or more S-RSBs in one or more S-RSB bursts, a mapping of a resource set to an S-RSB in one or more S-RSBs in one or more S-RSB bursts, and / or an SCI part 2 included in an S-RSB in one or more S-RSBs in one or more S-RSB bursts. The S-RSB may be associated with the selected beam, as described in conjunction with reference numeral 745. UE720 can map a resource set to an S-RSB of an S-RSB burst based at least in part on a received beam ID, beam index, or S-RSB index or S-RSB resource indication (as preconfigured or configured with an S-RSB structure or configuration or dynamically indicated in an S-RSB associated with a selected beam).

[0122] As indicated by reference numeral 760, UE 720 may send sidelink communications using beams and resources. Sidelink communications may be discovery messages (e.g., peer discovery or relay UE discovery after initial beamforming), direct communication requests (DCRs) (e.g., for establishing a PC5 RRC connection after initial beamforming), or beam reports (e.g., reporting a selected Tx beam and / or associated sidelink beam pair or sidelink beam pair link after initial beamforming). UE 720 may send sidelink communications using a transmit beam associated with or corresponding to a receive beam of UE 720 that is paired with a selected transmit beam from UE 710. The UE 720 may determine the transmit beam based at least in part on a selected beam ID associated with the selected beam preconfigured, configured, or indicated in the S-RSB, a selected beam index, an S-RSB index, or an S-RSB resource indication, a TCI state preconfigured, configured, or indicated by an SCI in the S-RSB associated with the selected beam (e.g., a QCL type of the RS of the UE 720), and / or a spatial filter preconfigured, configured, or indicated in the S-RSB (e.g., a beamforming parameter). As indicated by reference numeral 765, the UE 710 may monitor the sidelink communication based at least in part on each of the one or more S-RSBs of the one or more S-RSB bursts. The UE 710 may monitor sidelink communications in one or more resource sets (in a sidelink resource pool) based at least in part on a configured duration after each of the one or more S-RSBs in the one or more S-RSB bursts, a mapping of each of the one or more resource sets to a corresponding S-RSB in the one or more S-RSB bursts, and / or an SCI part 2 included in each of the one or more S-RSBs in the one or more S-RSB bursts. The UE 710 may monitor sidelink communications using one or more receive beams based at least in part on one or more corresponding transmit beams (e.g., based on beam correspondence) associated with each of the one or more S-RSBs in the one or more S-RSB bursts. The UE 710 may receive sidelink communications.

[0123] Due to the sensing-based transmission of the S-RSB bursts, the sidelink communication between UE 710 and UE 720 and other sidelink UEs is improved because there will be less interference. In the case where the S-RSB has a smaller size compared to the sidelink SSB, less signaling resources are used, latency is reduced, and power is saved, which improves the overall sidelink system resource utilization and performance.

[0124] As noted above, Figure 7 is provided as an example. Other examples may differ from those described above. Figure 7 Examples described.

[0125] Figure 8 is a diagram illustrating an example 800 of a beam scanning pattern for beamforming in accordance with the present disclosure.

[0126] A UE may transmit long sidelink beam management block bursts (e.g., S-RSB bursts) using multiple sidelink beam management block transmissions (e.g., S-RSB transmissions) on multiple corresponding beams in a beam scanning pattern. The beam scanning pattern may include a wide range of beam directions. For example, S-RSB bursts for beamforming may be specified, preconfigured, or configured (e.g., via system information such as SIB12 or SIB x or a common or broadcast RRC message) so that all UEs supporting FR2 for sidelink communications may obtain such information for initial beamforming or pairing on the sidelink. The information may include, for example, a burst offset, a burst offset in a time slot, a burst duration, a burst period, a number of repeated S-RSBs per burst, and / or an S-RSB interval. Example 800 illustrates beamforming with a burst offset of 0 slots (e.g., starting from the first slot of a subframe) and a burst offset in a slot of 0 symbols (e.g., starting from the first symbol of a slot), a burst duration of 4 slots, a burst period of i subframes or i milliseconds (in time), 12 S-RSBs per burst, and an S-RSB interval of 4 symbols (using 3-symbol S-RSBs). The burst duration can be long with a wide Tx beam scanning angle range for beamforming or beam pairing. For example, the burst duration of an S-RSB burst for beamforming may include 12 S-RSBs in 4 slots, with 3 RSBs in one slot. In a sidelink BWP of an FR2 digital scheme with a 60kHz subcarrier spacing (SCS), there may be 4 slots per subframe. Each S-RSB of an S-RSB burst is transmitted in a Tx beam, and thus the beam scanning pattern in Example 800 includes 12 beams in a 360 degree pattern. For example, S-RSB0 is transmitted on one beam direction (TxBeam0) and S-RSB3 is transmitted on another beam direction (TxBeam3) which is the fourth beam in the beam scanning mode. The S-RSB burst duration in Example 800 is 4 slots, 1 subframe, or 1 ms, with 12 3-symbol S-RSBs. In some aspects, the S-RSB burst duration can be reduced by utilizing a smaller size S-RSB (e.g., RS with SCI part 1 or SCI part 2 on PSSCH and interleaved on PSSCH symbols or a 2-symbol S-RSB without SCI part 1 and SCI part 2) based at least in part on the structure or configuration of the preconfigured or configured S-RSB burst.

[0127] The S-RSB burst period may be the number of i subframes or time slots or the duration of i ms, which may be used for semi-persistent S-RSB bursts using SPS-based resource reservation as indicated in the SCI. The SCI of S-RSB0 in the first burst may indicate S-RSB0 transmission at a resource reserved by the resource reservation period field set using the S-RSB burst period in the second burst, or the SCI of S-RSB3 in the first burst may indicate S-RSB3 transmission at a resource reserved by the resource reservation period field set using the S-RSB burst period in the second burst. In some aspects, the S-RSB burst period may be used for one or more S-RSB bursts using resource reservation as indicated in the SCI. The SCI of S-RSB0 in the first burst may indicate S-RSB0 transmission at a resource reserved at least in part based on the S-RSB burst period in the second burst, or the SCI of S-RSB3 in the first burst may indicate S-RSB3 transmission at a resource reserved at least in part based on the S-RSB burst period in the second burst. Example 800 also illustrates the receive beams (e.g., swept receive beams) being used by the receiving UE (e.g., Rx beam m for the first S-RSB burst and Rx beam n for the second S-RSB burst). In some aspects, the receiving UE may use a first Rx beam (e.g., RxBeam1) to select a first Tx beam (e.g., TxBeam1) associated with an S-RSB of a first S-RSB burst having a first best (preferred) beam measurement (e.g., RSRP1 or RSRQ1), and use a second Rx beam to select a second Tx beam (e.g., TxBeam2) associated with an S-RSB of a second S-RSB burst having a second best beam measurement (e.g., RSRP2 or RSRQ2). The receiving UE may determine the best Tx beam and the associated beam pair based at least in part on comparing the first and second best beam measurements (e.g., if the first best beam measurement is better than the second best beam measurement, TxBeam1 is determined as the best Tx beam, and TxBeam1 and RxBeam1 are determined as the associated beam pair). For different Rx beams or the first Rx beam, the first Tx beam and the second Tx beam may be the same or different. For different Rx beams or any other combination, the second Rx beam may be the same or different.

[0128] In some aspects, the receiving UE can report the selected best Tx beam (e.g., from one antenna or panel) and / or the associated corresponding sidelink beam pair or sidelink beam pair link to the transmitting UE using a transmit beam corresponding to the receive beam (e.g., based at least in part on beam correspondence), after beam pairing or beamforming, the receive beam is paired with the selected best Tx beam at a resource set associated or mapped to the selected best Tx beam. In some aspects, the receiving UE may report the selected multiple best Tx beams (e.g., from different antennas or panels) and / or the associated corresponding sidelink beam pairs or sidelink beam pair links to the transmitting UE using a transmit beam corresponding to a receive beam (e.g., based at least in part on beam correspondence), which is paired with one of the selected multiple best Tx beams at a resource set associated with or mapped to one of the selected multiple best Tx beams (e.g., based on the highest RSRP or RSRQ measurement, available resources in one of the resource sets, channel congestion levels such as CBR measurements, etc.). The receiving UE may use multiple transmit beams corresponding to the multiple receive beams, respectively (e.g., beam correspondences to different antennas or panels), which are paired with the selected multiple best Tx beams at resource sets associated with or mapped to the selected multiple best Tx beams, respectively, after beam pairing or beamforming.

[0129] In some aspects, a receiving UE (e.g., Figure 7 UE 720 shown in FIG. 7 can monitor signals from different Tx UEs (eg, Figure 7 The receiving UE may select a plurality of Tx beams respectively associated with the plurality of Tx UEs, and report the selected plurality of Tx beams to the plurality of Tx UEs respectively using a plurality of transmit beams respectively corresponding to the plurality of receive beams (e.g., based on beam correspondence), and after beam pairing or beamforming, the plurality of receive beams are paired with the selected plurality of Tx beams at resource sets respectively associated with or mapped to the selected plurality of Tx beams.

[0130] In some aspects, multiple receiving UEs (e.g., Figure 7 UE 720 shown in FIG. 1 may monitor a Tx UE (eg, Figure 7710) of the same S-RSB burst of the Tx UE 710 shown in the figure, the Tx UE being identified by the source ID indicated in the SCI of each S-RSB of the S-RSB burst. Multiple UEs may select one or more Tx beams together with the Tx UE. Similarly, each receiving UE may report the selected one or more Tx beams and / or the associated corresponding sidelink beam pair or sidelink beam pair link to the transmitting UE using a transmit beam corresponding to the receive beam (e.g., based at least in part on the beam correspondence), the receive beam being paired with one of the selected one or more Tx beams at a resource set associated with or mapped to one of the selected one or more best Tx beams (e.g., based on the highest RSRP or RSRQ measurement, available resources in one of the resource sets, a channel congestion level such as a CBR measurement). The receiving UE may use multiple transmit beams corresponding to multiple receive beams, respectively (e.g., beam correspondences with different antennas or panels), which are paired with the selected multiple Tx beams at resource sets respectively associated with or mapped to the selected multiple best Tx beams after beam pairing or beamforming. The transmitting UE may monitor transmissions from multiple receiving UEs at each resource set associated with or mapped to each S-RSB of one or more S-RSB bursts using receive beams corresponding to transmit beams respectively associated with S-RSBs of one or more S-RSB bursts.

[0131] As noted above, Figure 8 is provided as an example of beamforming. Other examples may differ from those described above. Figure 8 An example of description.

[0132] Fig. 9 is a diagram illustrating an example 900 of a beam scanning pattern for beam fine-tuning according to the present disclosure.Beam fine-tuning may be used for a transmit (Tx) beam.

[0133] Tx beam scanning for beam fine-tuning of a transmit beam using a fixed Rx beam may include fewer sidelink beam management blocks (e.g., S-RSBs) associated with fine Tx beams in a narrow angular range of the Tx beam direction. Sidelink beam management block bursts (e.g., S-RSB bursts) for Tx beam fine-tuning may be preconfigured or configured (e.g., via a public or broadcast RRC message for UEs in coverage of the network, via a UE-specific RRC message for a specific UE identified by a destination ID in an S-RSB within an S-RSB burst). The S-RSB burst may use, for example, a burst offset and a burst offset in a time slot. The S-RSB burst may have a burst duration, a burst period, a number of S-RSBs per burst, and / or an S-RSB interval. Example 900 illustrates a Tx beam fine tuning S-RSB burst with a burst offset of 1 slot (e.g., starting from the second slot of a subframe), a burst offset in a slot of 1 symbol (e.g., starting from the second symbol of a slot), a burst duration of one slot, a burst period of j ms over j slots or subframes or time, 3 S-RSBs per burst, and an S-RSB interval of 4 symbols (using 3-symbol S-RSB). The burst duration may be short with a narrow, fine Tx beam scan angle range for fine tuning the Tx beam in one direction (e.g., associated with Tx wide beam). For example, 3 S-RSBs (using 3-symbol S-RSB) in 3 fine beams in slot 1 of subframe 0 or subframe j may be scanned in a particular direction (e.g., associated with Tx beam TxWideBeam 1). There may be multiple S-RSB transmissions on multiple corresponding fine beams, but the intra-burst Tx beam scan may be within a narrow range of directions. The number of beams used for beam fine-tuning and / or the angle of the beam scanning pattern (e.g., within 90 degrees) can be configured via signaling or stored pre-configuration information. In example 900, the angular range of the beam scanning pattern is 60 degrees with a sidelink FR2 digital scheme (e.g., SCS=120kHz, with 8 time slots per subframe). In addition, the SCI of the S-RSB of the first burst (e.g., the first S-RSB of the first burst in time slot 1 of subframe 0) can indicate the resources reserved for the first S-RSB transmission in the second burst (e.g., the first S-RSB of the second burst in time slot 1 of subframe j) based on a burst period of j subframes or j ms.

[0134] As noted above, Fig. 9 is provided as an example. Other examples may differ from those described above. Fig. 9 Examples described.

[0135] Fig.10is a diagram illustrating an example 1000 of a beam scanning pattern for beam fine-tuning according to the present disclosure. Beam fine-tuning may be used for receive (Rx) beams.

[0136] Rx beam scanning for beam fine-tuning of the receive beam using a fixed Tx beam can include fewer repeated sidelink beam management blocks (e.g., S-RSBs) in a short sidelink beam management block burst (e.g., S-RSB burst). The S-RSB burst for Rx beam fine-tuning can be preconfigured or configured (e.g., via a public or broadcast RRC message for UEs in the coverage of the network, or via a UE-specific RRC message for a specific UE). The S-RSB burst can be identified by the destination ID in the SCI of the S-RSB within the S-RSB burst. The S-RSB burst can use a burst offset, a burst offset in a time slot, a burst period, and / or an S-RSB interval. The S-RSB burst can have a burst duration or the number of repeated S-RSBs. Example 1000 illustrates an Rx beam fine tuning S-RSB burst with a burst offset of 0 slots (e.g., starting from the first slot of a subframe), a burst offset in a slot of 1 symbol (e.g., starting from the second symbol of a slot), a burst duration of 2 slots, a burst period of k subframes or km ms in time, 4 S-RSBs per burst, and an S-RSB interval of 5 symbols (using 4-symbol S-RSBs). The burst duration can be short with a narrow fine Rx beam scan angle range for fine tuning the Rx beam in one direction (e.g., associated with a Tx beam). For example, the Rx scan pattern can be within 90 degrees with a short S-RSB burst of 4 repeated S-RSBs over 2 slots (e.g., slot 0 and slot 1 of subframe 0 or subframe k). In some aspects, the S-RSBs in the Rx beam fine tuning burst can include repetitions of the same S-RSB. The S-RSB burst duration is four 4-symbol S-RSBs in two slots transmitted on a Tx beam (e.g., Tx beam r) based on a sidelink FR2 digital scheme (e.g., SCS=120 kHz, where each subframe has 8 slots). In addition, the SCI of the S-RSB of the first burst (e.g., the first S-RSB of the first burst in slot 0 of subframe 0) can indicate resources reserved for the first S-RSB transmission in the second burst (e.g., the first S-RSB of the second burst in slot 0 of subframe k) based at least in part on the burst period k subframes or km ms in time.

[0137] As noted above, Fig.10 is provided as an example. Other examples may differ from those described above. Fig.10 Examples described.

[0138] Fig.111 is a diagram showing an example 1100 of an association between a sidelink beam management block burst (e.g., S-RSB burst) for beamforming and an S-RSB burst for Tx or Rx beam fine-tuning with different beam scanning modes according to the present disclosure. Example 1100 shows a first beam scanning mode for beamforming and a second beam scanning mode for Tx beam fine-tuning and a third beam scanning mode for Rx beam fine-tuning. There may be one or more S-RSB bursts for beamforming, one or more S-RSB bursts for beam fine-tuning of a Tx beam, and one or more S-RSB bursts for beam fine-tuning of an Rx beam. The association between different types of S-RSB bursts may be specified, preconfigured, or configured with a specified association or mapping, for example, via a public or broadcast RRC message for all UEs in the coverage of the network or a dedicated RRC message for a specific UE (e.g., identified by a destination ID in an S-RSB within an S-RSB burst).

[0139] For a Tx beam associated with an S-RSB of a beamformed S-RSB burst (e.g., Tx beam i of S-RSB burst x), there is an S-RSB burst (e.g., S-RSB burst y associated with Tx beam i) for beam fine-tuning the Tx beam by, for example, mapping via a time interval and / or frequency offset (e.g., preconfigured or configured) or via a mapping table having time and frequency resource allocation indexed by an ID or index of the Tx beam or an index of the S-RSB associated with the Tx beam or a resource indication of the S-RSB (e.g., preconfigured or configured). For a Tx beam associated with an S-RSB of a beamformed S-RSB burst (e.g., Tx beam i of S-RSB burst x) or an S-RSB of a Tx beam having a beamformed S-RSB burst (e.g., S-RSB 4 of Tx beam i with S-RSB burst x), there is an S-RSB burst for beam fine-tuning the Tx beam (e.g., S-RSB burst y associated with Tx beam i or S-RSB 4) by, for example, mapping via a time interval and / or frequency offset (e.g., preconfigured or configured) or having a mapping table of time and frequency resource allocation indexed by an ID or index of the Tx beam (e.g., Tx beam i) or an index of the associated S-RSB (e.g., S-RSB 4). For a Tx beam associated with an S-RSB of a beamformed S-RSB burst (e.g., Tx beam i of S-RSB burst x) or an S-RSB of a Tx beam with a beamformed S-RSB burst (e.g., S-RSB 4 of Tx beam i with S-RSB burst x), or for a Tx fine beam associated with an S-RSB of a Tx beam fine-tuning S-RSB burst (e.g., Tx fine beam i0 of S-RSB burst y) or an S-RSB with a Tx beam fine-tuning S-RSB burst (e.g., S-RSB0 of Tx fine beam i0 with S-RSB burst y), there is an S-RSB burst for beam fine-tuning the Rx beam using the Tx beam or the Tx fine beam (e.g., S-RSB burst z associated with Tx beam i or Tx fine beam i0). Beam fine-tuning may involve, for example, mapping via a time interval and / or frequency offset (e.g., preconfigured or configured) or with time and frequency resource allocation indexed by a Tx beam ID or index (e.g., Tx beam i for S-RSB burst x) or a Tx fine beam ID or index (e.g., Tx fine beam i0 for S-RSB burst y) or an index of an associated S-RSB (e.g., S-RSB4 for Tx beam i for S-RSB burst x or S-RSB0 for Tx fine beam i0 for S-RSB burst y). Figure 8 The described operation can be used for a beamformed S-RSB burst x, with respect to Fig. 9 The described operation can be used to tune the S-RSB burst y of Tx beam i, and with respect to Fig.10 The described operations may be used to tune the S-RSB burst z of Tx beam i Tx fine beam i0.

[0140] As noted above, Fig.11 is provided as an example. Other examples may differ from those described above. Fig.11 Examples described.

[0141] Fig.12 is a diagram illustrating an example 1200 of a resource pool for S-RSB according to the present disclosure.

[0142] Example 1200 illustrates that a dedicated resource pool for sidelink beam management block bursts (e.g., S-RSB bursts) can be FDM or TDM with one or more sidelink communication transmit and / or receive pools. The UE can switch from a dedicated resource pool for beamforming to a transmit or receive pool for sending or receiving sidelink communications (such as discovery messages (e.g., beamForm2Discovery), DCRs (e.g., beamForm2DCRs), or beam measurement reports) using a timeline (e.g., configured via signaling or stored preconfiguration information). In some aspects, dedicated resources or resource pools may be preconfigured or configured based at least in part on an S-RSB burst structure or configuration for beam management (e.g., initial beamforming, beam fine-tuning, beam monitoring, or beam recovery), for example, following one or more S-RSB bursts (e.g., a burst set comprising one or more S-RSB bursts), wherein the one or more S-RSB bursts may be semi-persistent (e.g., S-RSB bursts for initial beamforming or beam fine-tuning or beam monitoring at resources reserved using a resource reservation period for SPS scheduling) or event-triggered (e.g., S-RSB bursts for beam fine-tuning or beam recovery (e.g., at selected and / or reserved resources if a beam measurement is below a threshold)).

[0143] In some aspects, the UE may switch between dedicated resources or resource pools (e.g., for S-RSB scanning from a first UE and monitoring by a second UE) and shared transmit and receive resources or resource pools (e.g., for beam reporting, discovery or direct communication request messages, or other sidelink communications sent from a second UE or monitored by a first UE). In some aspects, the UE may switch to resources or resource pools for S-RSB bursts for initial beamforming, and then switch to resources or resource pools for beam reporting (e.g., the selected transmit beam and / or receive beam) or discovery or direct communication messages, for example, based at least in part on the determination for initial beamforming. In some aspects, the UE may switch to resources or resource pools for S-RSB bursts for beam fine-tuning or beam monitoring, and then switch to resources or resource pools for beam reporting or beam measurement, for example, based on the configuration for beam fine-tuning or beam monitoring. In some aspects, for example, if the beam measurement is below a threshold or a beam failure is detected, the UE may be triggered to switch to a resource or resource pool for S-RSB bursts for beam fine-tuning or beam recovery, and then to a resource or resource pool for beam reporting or beam measurement.

[0144] The receiving UE may use one or more transmit beams respectively associated with one or more selected Tx beams from the transmitting UE in a resource range (e.g., a resource set) mapped to the one or more selected Tx beams, or S-RSBs respectively associated with the one or more selected Tx beams or indicated in SCI part 2 sent using each of the S-RSBs respectively associated with the one or more selected Tx beams. The transmitting UE may use a receive beam respectively associated with its Tx beam or the S-RSB of its S-RSB burst at a resource (e.g., a resource set) mapped to its Tx beam S-RSB of its S-RSB burst or indicated in SCI part 2 sent using each of the S-RSBs of its S-RSB burst.

[0145] As noted above, Fig.12 is provided as an example. Other examples may differ from those described above. Fig.12 Examples described.

[0146] Fig.13 is a diagram illustrating an example 1300 of resources associated with a beam in accordance with the present disclosure.

[0147] In some aspects, a sidelink beam management block (such as an S-RSB (e.g., associated with a Tx beam) of an S-RSB burst scanned with different S-RSBs (e.g., different Tx beams) from a first UE (e.g., UE 710)) can be associated with a resource set and an Rx beam at a second UE (e.g., UE 720) (e.g., beam pairing between the Tx beam and the Rx beam). Thus, sidelink resources for sidelink communication from the second UE (e.g., UE 720) can be mapped accordingly. For example, a Tx beam can be associated with an S-RSB (e.g., Tx beam i or Tx beam j of an S-RSB burst x) sent by a first UE (e.g., UE 710) and selected by a second UE (e.g., UE 720). There may be resource sets associated with or mapped in a dedicated S-RSB pool (e.g., resource set p mapped to Tx beam i and its paired Rx beam, or resource set q mapped to Tx beam j and its paired Rx beam) and / or resource sets associated with or mapped in a sidelink transmit or receive pool (e.g., resource set r mapped to Tx beam i and its paired Rx beam, or resource set s mapped to Tx beam j and its paired Rx beam) for use in sidelink communication messages (e.g., discovery, DCR, or beam report messages) from a second UE to a first UE after beamforming a link (e.g., SBPL k, which is formed by a selected Tx beam from the first UE and a paired Rx beam at the second UE) using a sidelink beam pair link. The resource set association or mapping can be specified, preconfigured, configured (e.g., a common or dedicated RRC configuration), activated (e.g., a MAC CE) (e.g., based at least in part on the ID or index of the selected Tx beam, or the index of the S-RSB, or a resource indication of the S-RSB associated with the selected Tx beam), or indicated by an SCI part 2 having preferred resources for the S-RSB associated with the selected Tx beam.

[0148] In some aspects, sidelink beam correspondence may be enabled based at least in part on the capabilities of the UE. A Tx beam from a first UE (e.g., UE 710) may be associated with an S-RSB of a beamformed S-RSB burst (e.g., S-RSB k associated with Tx beam k of S-RSB burst x), which is transmitted by the first UE and selected by a second UE (e.g., UE 720) via beamforming with a first sidelink beam pair link using an Rx beam (e.g., SBPL k is formed by Tx beam k and Rx beam k). A receive beam (e.g., receive beam 1) for the first UE may be present to monitor a sidelink communication message (e.g., discovery, DCR, or beam report message) from the second UE. In some aspects, a receive beam (e.g., receive beam 1) at a first UE corresponds to a Tx beam (e.g., Tx beam k), e.g., based on QCL Type-D (same spatial filter) between a first RS associated with an S-RSB (e.g., S-RSB k with Tx beam k) selected from the first UE and a second RS associated with an S-RSB for a transmit beam (e.g., transmit beam 1) for the second UE to send a sidelink communication message to the first UE from a second UE (not shown) (e.g., transmit beam 1 at the second UE corresponds to Rx beam k, e.g., based on QCL Type-D). The transmit beam and the receive beam may form a second sidelink beam pair link (e.g., SBPL 1 is formed by transmit beam 1 and receive beam 1) based at least in part on the sidelink beam correspondence.

[0149] As noted above, Fig.13 is provided as an example. Other examples may differ from those described above. Fig.13 Examples described.

[0150] Fig.14A and 14B is a diagram illustrating an example 1400 of S-RSB beam scanning according to the present disclosure. A first Tx UE 1410 and a second Tx UE 1415 may communicate with an Rx UE 1420 on a sidelink channel.

[0151] Fig.14AThe UE is shown performing beam finding or beam forming operations on the sidelink. As indicated by reference numeral 1422, UE 1410, UE 1415, and UE 1420 may be configured with a FR2 configuration for one or more services. The UE may be configured (via signaling or stored pre-configuration information) with parameters related to FR2 operation (e.g., SL-FR2Config) having a FR2 frequency list and associated one or more digital schemes for one or more sidelink BWPs, respectively. The UE may be configured with a dedicated sidelink beam management block resource pool (e.g., an S-RSB resource pool) and a transmit and / or receive resource pool for each sidelink BWP. The UE may be configured with S-RSB burst parameters such as burst duration, burst period, burst offset, burst offset slot, number of S-RSBs for an S-RSB burst, S-RSB interval, and / or S-RSB structure for each digital scheme of a dedicated RSB resource pool. The UE may be configured with a resource set association or mapping for each Tx beam or S-RSB burst in a dedicated resource pool or a shared transmit and / or receive pool for sidelink communication.

[0152] The UE may be part of a beam finding or beam forming operation. As indicated by reference numeral 1424, UE 1410 and UE 1415 may perform sensing in a dedicated S-RSB resource pool. UE 1410 and UE 1415 may perform sensing in a dedicated S-RSB resource pool based at least in part on decoding an SCI indicating resources reserved for S-RSB transmission and / or sidelink RSRP, RSRQ, or SINR measurement (e.g., resource reservation for S-RSBs in nested S-RSB bursts based at least in part on an S-RSB burst duration and an S-RSB period).

[0153] As indicated at reference numeral 1426, UE 1410 and UE 1415 may select one or more resources for one or more S-RSB bursts based at least in part on the sensing.As indicated at reference numeral 1428, UE 1420 may begin monitoring a dedicated S-RSB resource pool for S-RSB bursts.

[0154] As shown in reference numeral 1430, UE 1410 may transmit one or more S-RSB bursts with a source ID (e.g., UE 1410 ID) and / or a destination ID (e.g., UE 1420 ID or a service ID or sidelink communication ID for unicast between UE 1410 and UE 1420), a beamforming indication, a beam index, a beam ID, a spatial filter or TCI, an S-RSB index or an S-RSB resource indication, an S-RSB burst configuration index, or other information indicated in each S-RSB transmission. As shown in reference numeral 1432, UE 1420 may determine one or more selected Tx beams from UE 1410 based at least in part on measurements (e.g., sidelink RSRP, sidelink RSRQ, or sidelink SINR), beamforming indications, beam indexes or IDs, and / or spatial filters or TCIs indicated in received S-RSBs associated with one or more selected Tx beams from UE 1410.

[0155] As indicated by reference numeral 1434, UE 1415 may transmit one or more S-RSB bursts with a source ID (e.g., UE 1415 ID) and / or a destination ID (e.g., UE 1420 ID or a service ID or sidelink communication ID for unicast between UE 1415 and UE 1420), a beamforming indication, a beam index, a beam ID, a spatial filter or TCI, an S-RSB index or an S-RSB resource indication, an S-RSB burst configuration index, or other information indicated in each S-RSB transmission. As indicated by reference numeral 1436, UE 1420 may determine one or more selected Tx beams from UE 1410 based at least in part on a measurement (e.g., a sidelink RSRP, a sidelink RSRQ, or a sidelink SINR) and a beamforming indication, a beam index or ID, and / or a spatial filter or TCI indicated in a received S-RSB associated with one or more selected Tx beams from UE 1415.

[0156] In some aspects, UE 1420 may send sidelink communications with peer discovery, DCR, or beam report messages, such as Fig. 14B, as shown in a continuation of example 1400 in . As indicated by reference numeral 1440, UE 1420 may perform sensing and resource selection (e.g., using an Rx beam paired with the selected Tx beam during beamforming) within a resource set mapped to an S-RSB associated with a selected Tx beam from UE 1410 (e.g., identified by a source ID (Tx UE) or a destination ID (service or sidelink communication) in an S-RSB associated with the selected Tx beam). UE 1420 may perform resource selection based at least in part on an S-RSB index or an S-RSB resource indication, a Tx beam ID, or a Tx beam index. The resource selection may be within a preferred resource indicated in an S-RSB associated with a selected Tx beam from UE 1410. As indicated by reference numeral 1442, UE 1410 may begin monitoring sidelink communications with discovery messages, DCRs, or beam reports at resource sets mapped to each S-RSB or Tx beam within its S-RSB burst, respectively. UE 1410 may use receive beams corresponding to each S-RSB or Tx beam within its S-RSB burst, respectively, based at least in part on the sidelink beam correspondence. As indicated by reference numeral 1444, UE 1420 may send sidelink communications with discovery messages, DCRs, or beam reports to UE 1410 at selected resources within the resource set on transmit beams corresponding to Rx beams paired with selected Tx beams from UE 1410, respectively.

[0157] As indicated by reference numeral 1446, the UE 1420 may perform sensing and resource selection (e.g., using an Rx beam paired with the selected Tx beam during beamforming) within a resource set mapped to the S-RSB associated with the selected Tx beam from the UE 1415 (e.g., identified by a source ID (Tx UE) or a destination ID (service or sidelink communication) in the S-RSB associated with the selected Tx beam). The selection may be based at least in part on an S-RSB index or an S-RSB resource indication, a Tx beam ID or a Tx beam index, and / or within a preferred resource indicated in the S-RSB associated with the selected Tx beam from the UE 1415. As indicated by reference numeral 1448, the UE 1415 may begin monitoring for sidelink communications with discovery messages, DCRs, or beam reports at a resource set mapped to each S-RSB or Tx beam, respectively, within its S-RSB burst. UE 1415 may use a receive beam corresponding to each S-RSB or Tx beam within its S-RSB burst, respectively, based at least in part on the sidelink beam correspondence.

[0158] As indicated by reference numeral 1450, UE 1420 may send a sidelink communication with a discovery message, a DCR, or a beam report to UE 1415 at selected resources within one or more resource sets on one or more transmit beams associated with one or more Rx beams paired with one or more selected Tx beams from UE 1415. UE 1420 may transmit on one or more transmit beams based at least in part on beam correspondence of one or more Rx beams paired with one or more selected Tx beams, respectively. The sidelink beam correspondence may include beam information provided by an S-RSB of an S-RSB burst.

[0159] As noted above, Figures 14A-14B is provided as an example. Other examples may differ from those described above. Figures 14A-14B Examples described.

[0160] Fig.15A and 15B is a diagram illustrating an example 1500 of S-RSB beam scanning for beam fine-tuning in accordance with the present disclosure.

[0161] Fig.15A As shown in Figure 1502, UE 1410 may use Fig.14A 1404 to establish a sidelink beam pair link (SBPL), such as SBPL 1, with UE 1420. SBPL 1 may have paired Tx beam 1 and Rx beam 1. As shown in reference numeral 1504, UE 1415 may also use Fig.14A The beam discovery or beamforming operation described in the embodiment of the present invention is used to establish an SBPL with the UE 1420. The SBPL 2 may have a paired Tx beam 2 and Rx beam 2.

[0162] As indicated by reference numeral 1506, after beam pairing or beamforming, UE 1420 may optionally perform sensing and select resources in a dedicated sidelink beam management block pool (e.g., an S-RSB resource pool) or a transmit resource pool of UE 1420 based at least in part on a resource set mapped to an S-RSB associated with a selected Tx beam (e.g., Tx beam 1) from UE 1410, or based on a resource set mapped to a selected Tx beam (e.g., Tx beam 2) from UE 1415, or preferred resources indicated in an S-RSB associated with a selected Tx beam (e.g., Tx beam 1) from UE 1410, or preferred resources indicated in an S-RSB associated with a selected Tx beam (e.g., Tx beam 2) from UE 1413. As indicated by reference numeral 1508, UE 1420 may report one or more selected Tx beams (e.g., Tx beam 1 as shown, optionally including paired Rx beams) from UE 1410. As indicated by reference numeral 1510, UE 1420 may report one or more selected Tx beams (e.g., Tx beam 2 as shown, optionally including paired Rx beams) from UE 1415.

[0163] In some aspects, UE 1420 may report the selected (e.g., maximum RSRP, RSSI, or SINR) Tx beam to each Tx UE at the selected resources using a transmit beam corresponding to the Rx beam of UE 1420 (e.g., Tx beam 1 is reported to UE 1410 and Tx beam 2 is reported to UE 1415, optionally including a paired Rx beam). During beamforming, the Rx beam may be paired with the selected Tx beam of each Tx UE (e.g., based at least in part on beam correspondence or QCL Type-D, if supported). In addition, the beam report may be indicated via a PC5 RRC message or PC5 MAC CE or SCI part 2. The beam report may indicate a beam ID or index, an associated S-RSB index or S-RSB resource indication, and / or a spatial filter or TCI, as included in a receive SCI sent with the S-RSB associated with the selected Tx beam. UE 1410 and UE 1415 may monitor a possible transmission from UE 1420 at a resource set in a dedicated S-RSB resource pool or a receive resource pool of UE 1410 or UE 1415 based at least in part on a resource mapping for each Tx beam or each S-RSB of its S-RSB burst or a preferred resource indicated in each S-RSB of its S-RS burst. UE 1420 may send communications to UE 1410 or UE 1415 using a transmit beam corresponding to an Rx beam paired with a selected Tx beam from UE 1410 or UE 1415 (e.g., based at least in part on beam correspondence or QCL Type-D, if supported).

[0164] As indicated by reference numeral 1512, UE 1410 may sense and select a resource for an S-RSB burst for beam fine-tuning a Tx beam. Resource selection may be based at least in part on a specified, preconfigured, configured, or activated S-RSB burst association (e.g., Fig.11 ), or a resource set mapped to an S-RSB associated with a selected Tx beam reported to UE 1410 (e.g., a selected Tx beam Tx beam 1 reported to UE 1420), or a preferred resource indicated in an S-RSB associated with a selected Tx beam reported to UE 1410. As indicated by reference numeral 1514, UE 1415 may sense and select a resource for an S-RSB burst of a beam fine-tuning Tx beam. Resource selection for UE 1415 may be similar to resource selection described for UE 1410.

[0165] As indicated by reference numeral 1516, UE 1420 may begin monitoring S-RSB bursts for fine tuning of Tx beam 1 or Tx beam 2. For example, the monitoring may be based at least in part on a specified, preconfigured, configured, or activated S-RSB burst association (e.g., as combined with Fig.11 ). The monitoring may be based at least in part on a resource set mapped to an S-RSB associated with a reported selected Tx beam (e.g., selected Tx beam Tx beam 1 reported to UE 1410 and selected Tx beam Tx beam 2 reported to UE 1415), or on preferred resources indicated in an S-RSB associated with a selected Tx beam reported to UE 1410 or UE 1415.

[0166] As indicated by reference numeral 1518, UE 1410 may transmit one or more S-RSB bursts to scan a Tx fine beam associated with the reported Tx beam Tx beam 1. As indicated by reference numeral 1520, UE 1420 may select a Tx fine beam of UE 1410. As indicated by reference numeral 1522, UE 1415 may transmit one or more S-RSB bursts to scan a Tx fine beam associated with the reported Tx beam Tx beam 2. As indicated by reference numeral 1524, UE 1420 may select a Tx fine beam of UE 1415. UE 1410 and UE 1415 may send an S-RSB burst for Tx beam fine-tuning having a source ID (e.g., identifying UE 1410 or UE 1415), a beam fine-tuning indication of the Tx beam, a Tx fine beam index or ID, a spatial filter or TCI, an S-RSB index or S-RSB resource indication, and / or an S-RSB burst configuration index, as indicated in each S-RSB transmission during an S-RSB burst for Tx beam fine-tuning.

[0167] As indicated by reference numeral 1526, UE 1420 may sense and select resources for reporting the selected Tx fine beam. For example, UE 1420 may determine one or more selected Tx beams from UE 1410 and UE 1415 based at least in part on measurements (e.g., RSRP, RSRQ, or SINR), beam fine tuning (if indicated by the Tx beam), a Tx fine beam index or ID, and / or a spatial filter or TCI indicated in a received S-RSB associated with the selected Tx fine beams from UE 1410 and UE 1415 during one or more S-RSB bursts for Tx beam fine tuning. UE 1420 may then perform sensing and select resources in a dedicated S-RSB resource pool or a transmit resource pool for UE 1420 for reporting the selected Tx fine beams from UE 1410 and UE 1415 based at least in part on a resource set mapped to the S-RSB associated with the selected Tx fine beam or a preferred resource indicated in the S-RSB associated with the selected Tx fine beam.

[0168] As indicated by reference numeral 1528, UE 1420 may report the selected Tx fine beam Tx beam 1x to UE 1410. As indicated by reference numeral 1530, UE 1420 may report the selected Tx fine beam Tx beam 2x to UE 1415. UE 1420 may report Tx beam 1x and Tx beam 2x (optionally including paired Rx beams) at the selected resources using a fine transmit beam corresponding to the Rx beam of UE 1420 (e.g., based at least in part on beam correspondence or QCL Type-D if supported). During Tx beam fine tuning, the Rx beam may be paired with the selected Tx fine beam of UE 1410 or UE 1415. In addition, the report can be indicated via a PC5 RRC message or PC5 MAC CE or SCI part 2 (e.g., indicating a Tx fine beam ID or index, an associated S-RSB index or S-RSB resource indication, a spatial filter or TCI included in a received S-RSB associated with the selected Tx fine beam). UE 1410 and UE 1415 can monitor possible transmissions from UE 1420 at a set of resources in a dedicated S-RSB resource pool or a receive resource pool of UE 1410 and UE 1415 based at least in part on a resource mapping indicated in each S-RSB in its S-RSB burst for Tx beam fine-tuning or a preferred resource indicated in each S-RSB in its S-RSB burst for Tx beam fine-tuning. The monitoring may perform Tx beam fine tuning using a fine receive beam corresponding to a Tx fine beam associated with each S-RSB of its S-RSB burst (eg, based at least in part on beam correspondence or QCL Type-D, if supported).

[0169] Fig. 15B FIG. 4 shows beam fine-tuning for a receive beam. Similar to beam fine-tuning for an Rx beam, FIG. Fig.15A , UE 1410 may perform sensing and select a resource in a dedicated S-RSB resource pool, as indicated by reference numeral 1532, and UE 1415 may perform sensing and select a resource in a dedicated S-RSB resource pool, as indicated by reference numeral 1534. Resource selection may be based at least in part on S-RSB burst association (e.g., as combined with Fig.11, described), a resource set mapped to an S-RSB associated with a reported selected Tx beam (e.g., the selected Tx beam Tx beam 1 reported to UE 1410 and the selected Tx beam Tx beam 2 reported to UE 1415), a reported selected Tx fine beam (e.g., the selected Tx beam 1x reported to UE 1410 and the selected Tx beam 2x reported to UE 1415), and / or a preferred resource indicated in an S-RSB associated with the reported selected Tx beam or the reported selected Tx fine beam.

[0170] As indicated by reference numeral 1536, UE 1420 may start monitoring S-RSB bursts with a fixed Tx beam. For example, the monitoring may be for one or more S-RSB bursts for Rx beam fine-tuning (e.g., S-RSB bursts with a fixed Tx beam (such as Tx beam 1 or Tx beam 1x from UE 1410 or Tx beam 2 or Tx beam 2x from UE 1415)). The monitoring may be based at least in part on S-RSB burst association (e.g., as combined with Fig.11 , described), a resource set mapped to the S-RSB associated with the reported selected Tx beam (e.g., the selected Tx beam 1 reported to UE 1410 and the selected Tx beam 2 reported to UE 1415), a reported selected Tx fine beam (e.g., the selected Tx beam 1x reported to UE 1410 and the selected Tx beam 2x reported to UE 1415), and / or preferred resources indicated in the S-RSB associated with the reported selected Tx beam or the reported selected Tx fine beam.

[0171] As shown in reference numeral 1538, UE 1410 may transmit one or more S-RSB bursts scanned using a Tx beam (e.g., Tx beam 1 or Tx beam 1x). As shown in reference numeral 1540, UE 1420 may select an Rx beam paired with a Tx beam or Tx fine beam of UE 1410. As shown in reference numeral 1542, UE 1415 may transmit one or more S-RSB bursts scanned using a Tx beam (e.g., Tx beam 2 or Tx beam 2x). As shown in reference numeral 1544, UE 1420 may determine to select an Rx beam paired with a Tx beam or Tx fine beam of UE 1415. UE 1410 and UE 1415 may each send an S-RSB burst for Rx beam fine-tuning having a source ID, a beam fine-tuning indication of the Rx beam, a fixed Tx beam or Tx fine beam index or ID, a spatial filter or TCI, an S-RSB index or S-RSB resource indication and / or an S-RSB burst configuration index indicated in each S-RSB transmission during the S-RSB burst for Rx beam fine-tuning. UE 1420 may perform frequency scanning utilizing an Rx fine beam associated with an Rx beam paired with a selected Tx beam during beamforming with UE 1410 and UE 1415 (e.g., Rx beam 1 with UE 1410 or Rx beam 2 with Tx UE 1415) or an Rx beam corresponding to a selected Tx fine beam (e.g., based at least in part on sidelink beam correspondence) during Tx beam fine-tuning with UE 1410 and UE 1415 (e.g., Tx beam 1x with UE 1410 or Tx beam 2x with UE 1415). UE 1420 can determine one or more Rx fine beams based at least in part on beam measurements (e.g., RSRP, RSRQ, SINR) indicated in each S-RSB associated with the selected Tx beam or the selected Tx fine beam from UE 1410 and UE 1415, respectively, a beam fine-tuning indication of the Rx beam, a Tx beam or Tx fine beam index or ID, and / or a spatial filter or TCI.

[0172] UE 1410 and / or UE 1415 may exchange sidelink communications (e.g., sidelink messages with peer discovery, DCR, beam reports, or sidelink data packets) with corresponding fine-tuned Tx and / or Rx beams with UE 1420. As indicated by reference numeral 1546, UE 1410 may exchange sidelink communications on a fine sidelink beam pair link between UE 1410 and UE 1420. As indicated by reference numeral 1548, UE 1415 may exchange sidelink communications on a fine sidelink beam pair link between UE 1415 and UE 1420.

[0173] In some aspects, Tx beam or Rx beam fine-tuning may be based at least in part on the correlation (in time sequence) between the S-RSB burst for beamforming and the S-RSB burst for Tx or Rx beam fine-tuning (e.g., as Fig.11 S-RSB burst association shown). A first S-RSB burst for beamforming is followed by a second S-RSB burst for Tx beam fine-tuning or Rx beam fine-tuning. The UE can establish a fine-tuning sidelink beam pair link via such an association (in time series) between the S-RSB burst for beamforming and the S-RSB bursts for Tx beam fine-tuning and Rx beam fine-tuning, which association can be specified, preconfigured, configured or activated. In this case, the S-RSB burst for fine-tuning the Tx beam or Rx beam can be shared by one or more UEs that monitor the S-RSB burst for fine-tuning the Tx beam or Rx beam, and thus only the source ID or destination ID (e.g., a source ID identifying the UE sending the S-RSB burst or a destination ID identifying a service or sidelink communication in which one or more UEs participate) can be indicated in the S-RSB to identify the UE sending the S-RSB burst for beam fine-tuning.

[0174] In some aspects, Tx beam or Rx beam fine-tuning may be triggered by one of the paired UEs, for example, based at least in part on beam measurement or beam report. UE 1420 may trigger Tx beam fine-tuning or Rx beam fine-tuning based at least in part on beam measurement, and then send a Tx or Rx fine-tuning request together with its beam report. UE 1410 or UE 1415 may determine Tx beam fine-tuning or Rx beam fine-tuning based at least in part on the received beam report. In this case, the S-RSB burst for fine-tuning the Tx beam or Rx beam may be dedicated to the paired UE for triggered Tx or Rx fine-tuning (e.g., dedicated to UE1410 and UE 1420 or UE 1415 and UE 1420), and thus both the source ID (e.g., identifying UE 1410 or UE 1415) and the destination ID (e.g., identifying UE 1420) may be indicated in the S-RSB for identifying the UE that sends the triggered S-RSB burst for Tx or Rx beam fine-tuning and identifying the UE that monitors the triggered S-RSB burst for Tx and Rx beam fine-tuning. Dedicated Tx and Rx fine-tuning are respectively indicated in Fig.15A and Fig. 15B Described in detail in.

[0175] By using S-RSB in beam scanning mode for beamforming, beam fine-tuning, beam pairing, and other sidelink beam management operations, the sidelink UE can save power and signaling resources while reducing latency and interference.

[0176] As noted above, Figures 15A-15B is provided as an example. Other examples may differ from those described above. Figures 15A-15B Examples described.

[0177] As described above, the first UE (eg, Figure 7-10 and UE 710 in 13, or Figures 14A-15B The UE 1410 or UE 1415 in the example may use the Tx beam to send one or more sidelink beam management block bursts (e.g., S-RSB bursts) for beamforming or Tx or Rx beam fine-tuning. The second UE (e.g., Figure 7-10 and UE 720 in 13, or Figures 14A-15B UE 1420 in the communication channel may monitor one or more sidelink beam management block bursts (e.g., S-RSB bursts) to select a Tx beam to pair with its Rx beam, or to fine-tune a Tx or Rx beam, for a sidelink beam pair link for at least a sidelink communication from a first UE as a Tx UE to a second UE as an Rx UE. For reverse sidelink communication from the second UE as a Tx UE and the first UE as an Rx UE, sidelink beam correspondence may be applied to the second UE to determine a transmit beam, and to the first UE to determine a receive beam (without beamforming or fine-tuning) (for UEs that support sidelink beam correspondence (e.g., as indicated by UE capabilities, e.g., during the time when a PC5 RRC connection or a unicast connection is established between the first and second UEs)).

[0178] However, for UEs that cannot support sidelink beam correspondence (e.g., not indicated by UE capabilities, for example, during the time when a PC5 RRC connection or a unicast connection is established between the first and second UEs), the second UE may send an S-RSB burst for beamforming or Tx or Rx fine-tuning. The first UE may monitor the S-RSB burst, select a Tx beam from the second UE, and pair its Rx beam with the selected Tx beam from the second UE, respectively. The first UE may fine-tune the Tx beam or Rx beam, and then report the selected Tx beam and / or Rx beam to the second UE. That is, a sidelink beam pair link for reverse sidelink communication (e.g., from the second UE to the first UE) may be established via reverse beamforming or Tx or Rx beam fine-tuning (e.g., not based on sidelink beam correspondence). In this case, the sidelink beam pair link from the first UE to the second UE may be different from the sidelink beam pair link from the second UE to the first UE (e.g., not spatially symmetric or not QCL type D). Fig.1614 is a diagram illustrating an example process 1600 performed, for example, by a UE or an apparatus of a UE, according to the present disclosure. Example process 1600 is an example in which a UE (eg, UE 120, UE 1410, UE 1415) performs operations associated with reference signal blocks for a sidelink.

[0179] like Fig.16 As shown, in some aspects, process 1600 may include: performing sensing in a sidelink resource pool (block 1610). For example, a UE (e.g., using Fig.18 The communication manager 1808 and / or sensing component 1810 depicted in the figure can perform sensing in the sidelink resource pool as described above.

[0180] like Fig.16 As further shown, in some aspects, process 1600 may include selecting, based at least in part on the sensing, one or more sidelink resources for one or more sidelink beam management blocks (e.g., S-RSBs), wherein each sidelink beam management block (e.g., S-RSB) includes at least one beam management signal (e.g., RS) and / or SCI (block 1620). For example, a UE (e.g., using Fig.18 The communication manager 1808 and / or selection component 1812 depicted in the figure can select one or more sidelink resources for one or more sidelink beam management blocks (e.g., S-RSBs) based at least in part on sensing, wherein each sidelink beam management block (e.g., S-RSB) includes at least one beam management signal (e.g., RS) and / or SCI, as described above.

[0181] like Fig.16 As further shown, in some aspects, process 1600 may include: transmitting one or more sidelink beam management blocks (e.g., S-RSBs in an S-RSB burst) in a sidelink beam management block burst using one or more sidelink resources (block 1630). For example, a UE (e.g., using Fig.18 The communication manager 1808 and / or the transmitting component 1804 depicted in the figure can use one or more sidelink resources to send one or more sidelink beam management blocks in a sidelink beam management block burst (e.g., S-RSBs in an S-RSB burst), as described above.

[0182] Process 1600 may include additional aspects, such as any single aspect or any combination of the aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0183] In the first aspect, the sidelink resource pool is a resource pool used for sidelink beam management.

[0184] In a second aspect, alone or in combination with the first aspect, an S-RSB burst includes a number of S-RSBs within the S-RSB burst, has a specified duration, uses a time period to transmit the S-RSB burst, and / or uses an offset to start the S-RSB burst.

[0185] In a third aspect, alone or in combination with one or more of the first and second aspects, the SCI indicates a time interval for resource reservation based at least in part on a time period for transmission of an S-RSB burst.

[0186] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the SCI indicates one or more time and frequency resources reserved for one or more S-RSB transmissions in one or more S-RSB bursts, respectively.

[0187] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the SCI indicates an S-RSB index of an S-RSB within an S-RSB burst.

[0188] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the SCI indicates a TCI state or a spatial filter of a beam used to transmit an S-RSB.

[0189] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the SCI indicates an ID or index of a beam used to transmit the S-RSB.

[0190] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the SCI comprises a source identifier.

[0191] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the SCI indicates a beam management operation, wherein the beam management operation includes beam forming, beam fine tuning, or beam measurement.

[0192] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the SCI is SCI part 1, and the S-RSB includes SCI part 2 indicating one or more of a source ID or a destination ID.

[0193] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the SCI is SCI part 1, and the S-RSB includes SCI part 2 indicating preferred resources or non-preferred resources associated with the S-RSB.

[0194] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the at least one RS includes a first RS for AGC.

[0195] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, at least one RS includes a second RS for beamforming, beam fine-tuning, or beam measurement.

[0196] In a fourteenth aspect, either alone or in combination with one or more of aspects one to thirteen, process 1600 comprises: monitoring sidelink communications based at least in part on each of one or more S-RSBs in an S-RSB burst; and receiving sidelink communications.

[0197] In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, monitoring the sidelink communication includes: monitoring the sidelink communication in one or more resource sets based at least in part on one or more of the following: a configured duration after each S-RSB in one or more S-RSBs in an S-RSB burst, a mapping of each resource set in one or more resource sets to a corresponding S-RSB in one or more S-RSBs in an S-RSB burst, or an SCI part 2 included in each S-RSB in one or more S-RSBs in an S-RSB burst.

[0198] In the sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, monitoring the sidelink communication includes: monitoring the sidelink communication using one or more receive beams, wherein the one or more receive beams are at least partially based on one or more corresponding transmit beams associated with each S-RSB in one or more S-RSBs in the S-RSB burst.

[0199] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the sidelink communication comprises a discovery message, a DCR, or a beam report.

[0200] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, sending one or more S-RSBs in an S-RSB burst comprises sending one or more S-RSBs in a first beam scanning mode.

[0201] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, the process 1600 includes: transmitting the S-RSB in a second beam scanning mode.

[0202] In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, the process 1600 includes receiving an indication of a selected beam associated with a second beam scanning pattern.

[0203] In a twenty-first aspect, alone or in combination with one or more of the first to twentieth aspects, the first beam scanning pattern is used for beamforming, and the S-RSB of the first beam scanning pattern is mapped to a second beam scanning pattern for beam fine-tuning.

[0204] In a twenty-second aspect, alone or in combination with one or more of aspects one to twenty-first, sending one or more S-RSBs in an S-RSB burst comprises sending a repetition of the S-RSB.

[0205] Although Fig.16 An example block diagram of process 1600 is shown, but in some aspects, process 1600 may include Fig.16 The blocks depicted in the process 1600 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1600. Additionally or alternatively, two or more blocks in the blocks of the process 1600 may be executed in parallel.

[0206] Fig.17 17 is a diagram illustrating an example process 1700 performed, for example, by a UE or an apparatus of a UE, according to the present disclosure. Example process 1700 is an example in which a UE (eg, UE 120, UE 1420) performs operations associated with reference signal blocks for a sidelink.

[0207] like Fig.17 As shown, in some aspects, process 1700 may include monitoring one or more sidelink beam management blocks (e.g., S-RSBs in an S-RSB burst) in a sidelink beam management block burst in a sidelink resource pool (block 1710). For example, a UE (e.g., using Fig.18 The communication manager 1808 and / or monitoring component 1814 depicted in the figure can monitor one or more sidelink beam management blocks (e.g., S-RSBs in an S-RSB burst) in a sidelink beam management block burst in a sidelink resource pool, as described above.

[0208] like Fig.17As further shown, in some aspects, process 1700 may include receiving one or more sidelink beam management blocks (e.g., S-RSBs in an S-RSB burst) in a sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst (e.g., S-RSBs in an S-RSB burst) includes at least one beam management signal (e.g., RS) and / or SCI (block 1720). For example, a UE (e.g., using Fig.18 The communication manager 1808 and / or receiving component 1802 depicted in the figure can receive one or more sidelink beam management blocks (e.g., S-RSBs in an S-RSB burst) in a sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst (e.g., S-RSBs in an S-RSB burst) includes at least one beam management signal (e.g., RS) and / or SCI, as described above.

[0209] like Fig.17 As further shown, in some aspects, process 1700 may include selecting a beam based at least in part on one or more sidelink beam management blocks in a sidelink beam management block burst (e.g., an S-RSB in an S-RSB burst) (block 1730). For example, a UE (e.g., using Fig.18 The communication manager 1808 and / or selection component 1812 depicted in the figure can select a beam based at least in part on one or more sidelink beam management blocks in a sidelink beam management block burst (e.g., an S-RSB in an S-RSB burst), as described above.

[0210] Process 1700 may include additional aspects, such as any single aspect or any combination of the aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0211] In a first aspect, process 1700 includes: performing sensing for sidelink communications; selecting resources for sidelink communications based at least in part on a selected beam; and transmitting the sidelink communications. In some aspects, sensing may be performed in a sidelink resource pool.

[0212] In a second aspect, in combination with the first aspect, selecting resources includes: selecting resources from a resource set based at least in part on one or more of: a configured duration after each S-RSB in one or more S-RSBs in an S-RSB burst, a mapping of a resource set to an S-RSB in one or more S-RSBs in an S-RSB burst, or an SCI part 2 included in each S-RSB in one or more S-RSBs in an S-RSB burst.

[0213] In a third aspect, in combination with one or more of the first and second aspects, transmitting the sidelink communication comprises transmitting the sidelink communication using a transmit beam associated with the selected beam.

[0214] In a fourth aspect, in combination with one or more of the first to third aspects, the sidelink communication comprises a discovery message, a DCR or a beam report.

[0215] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the SCI indicates one or more time and frequency resources reserved for one or more S-RSB transmissions in one or more S-RSB bursts, respectively.

[0216] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the SCI indicates an S-RSB index of an S-RSB within an S-RSB burst.

[0217] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the SCI indicates a TCI state or a spatial filter of a beam used to transmit an S-RSB.

[0218] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the SCI indicates an identifier or index of a beam used to transmit the S-RSB.

[0219] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the SCI comprises a source identifier.

[0220] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the SCI indicates a beam management operation, and selecting the beam comprises: selecting the beam based at least in part on the beam management operation.

[0221] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the SCI is SCI part 1, and the S-RSB includes SCI part 2 indicating one or more of a source ID or a destination ID.

[0222] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the SCI is SCI part 1, and the S-RSB includes SCI part 2 indicating preferred resources or non-preferred resources associated with the S-RSB.

[0223] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the at least one RS includes a first RS for automatic gain control.

[0224] In a fourteenth aspect, alone in combination with the thirteenth aspect or further in combination with one or more of the first to twelfth aspects, at least one RS includes a second RS for beamforming, beam fine-tuning, or beam measurement.

[0225] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, selecting a beam comprises selecting a beam based at least in part on a measurement of one or more S-RSBs in an S-RSB burst.

[0226] In a sixteenth aspect, alone or in combination with one or more of aspects one to fifteen, process 1700 includes mapping a resource set to an S-RSB in one or more S-RSBs of an S-RSB burst based at least in part on a received beam identifier, a beam index, or an S-RSB index indicated in an S-RSB associated with a selected beam.

[0227] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, process 1700 includes: determining a transmit beam based at least in part on a beam ID, a beam index, an S-RSB index, a TCI state indicated in an S-RSB associated with a selected beam, or a spatial filter indicated by the SCI.

[0228] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, receiving one or more S-RSBs in an S-RSB burst comprises receiving the one or more S-RSBs using a receive beam scanning mode.

[0229] In a nineteenth aspect, alone in combination with the eighteenth aspect or further in combination with one or more of the first to seventeenth aspects, the receive beam scanning pattern includes a beam scanning pattern for beam fine tuning.

[0230] In the twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, receiving one or more S-RSBs in an S-RSB burst comprises receiving one or more S-RSBs in an S-RSB burst using a receive beam paired with a selected beam as part of a beam pair link.

[0231] In aspect twenty-first, in combination with one or more of aspects one to eighteen, selecting one or more sidelink resources for one or more sidelink beam management blocks includes selecting the sidelink resources to avoid conflicts with other sidelink beam management blocks.

[0232] Although Fig.17An example block diagram of process 1700 is shown, but in some aspects, process 1700 may include Fig.17 The blocks depicted in the process 1700 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1700. Additionally or alternatively, two or more blocks in the blocks of process 1700 may be executed in parallel.

[0233] Fig.18 is a diagram of an example apparatus 1800 for wireless communication. Apparatus 1800 may be a UE, or a UE may include apparatus 1800. In some aspects, apparatus 1800 includes a receiving component 1802 and a transmitting component 1804, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1800 may communicate with another apparatus 1806 (such as a UE, a base station, or another wireless communication device) using receiving component 1802 and transmitting component 1804. As further shown, apparatus 1800 may include a communication manager 1808. Communication manager 1808 may control and / or otherwise manage one or more operations of receiving component 1802 and / or transmitting component 1804. In some aspects, communication manager 1808 may include a communication manager 1808 in conjunction with Figure 2 One or more antennas, modems, controllers / processors, memories, or combinations thereof of the UE described herein. The communication manager 1808 may be or be similar to Figure 1 and Figure 2 For example, in some aspects, the communication manager 1808 can be configured to perform one or more functions described as being performed by the communication manager 140. In some aspects, the communication manager 1808 can include a receiving component 1802 and / or a sending component 1804. The communication manager 1808 can include a sensing component 1810, a selecting component 1812, and / or a monitoring component 1814, among other examples.

[0234] In some aspects, the apparatus 1800 may be configured to perform the Figure 1-15B Additionally or alternatively, the apparatus 1800 may be configured to perform one or more processes described herein, such as Fig.16 The process of 600 Fig.17 In some aspects, Fig.18 The apparatus 1800 and / or one or more components shown in the drawings may include a combination of Figure 2 Additionally or alternatively, Fig.18 One or more of the components shown in the figure may be combined with Figure 2In addition or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0235] The receiving component 1802 may receive communications from the apparatus 1806, such as reference signals, control information, data communications, or a combination thereof. The receiving component 1802 may provide the received communications to one or more other components of the apparatus 1800. In some aspects, the receiving component 1802 may perform signal processing (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the apparatus 1800. In some aspects, the receiving component 1802 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a UE are described.

[0236] Transmit component 1804 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to device 1806. In some aspects, one or more other components of device 1800 may generate communications and may provide the generated communications to transmit component 1804 for transmission to device 1806. In some aspects, transmit component 1806 may perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communications and may transmit the processed signals to device 1806. In some aspects, transmit component 1804 may include in conjunction with Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1804 can be co-located with the receive component 1802 in a transceiver.

[0237] In some aspects, sensing component 1810 may perform sensing in a sidelink resource pool. Selection component 1812 may select one or more sidelink resources for one or more sidelink beam management blocks (e.g., S-RSBs) based at least in part on the sensing, wherein each S-RSB includes at least one RS and / or SCI. Transmission component 1804 may transmit one or more S-RSBs in an S-RSB burst using the one or more sidelink resources. Transmission component 1804 may transmit the S-RSBs in a second beam scanning mode.

[0238] Monitoring component 1814 can monitor sidelink communications based at least in part on each of one or more S-RSBs in the S-RSB burst.Receiving component 1802 can receive the sidelink communications.Receiving component 1802 can receive an indication of a selected beam associated with a second beam scanning pattern.

[0239] In some aspects, monitoring component 1814 can monitor one or more sidelink beam management blocks (e.g., S-RSBs in an S-RSB burst) in a sidelink beam management block burst in a sidelink resource pool. Receiving component 1802 can receive one or more S-RSBs in an S-RSB burst, wherein each S-RSB in the S-RSB burst includes at least one RS and / or SCI. Selecting component 1812 can select a beam based at least in part on one or more S-RSBs in the S-RSB burst.

[0240] Sensing component 1810 can perform sensing for sidelink communications.Selecting component 1812 can select resources for sidelink communications based at least in part on the selected beam.Transmitting component 1804 can transmit the sidelink communications.

[0241] The selection component 1812 can map the resource set to an S-RSB in one or more S-RSBs of the S-RSB burst based at least in part on a received beam identifier, a beam index, or an S-RSB index indicated in an S-RSB associated with the selected beam. The selection component 1812 can determine the transmit beam based at least in part on the beam identifier, the beam index, the S-RSB index, a TCI state indicated in an S-RSB associated with the selected beam, or a spatial filter indicated by the SCI.

[0242] Fig.18 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.18 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.18 Two or more components shown may be implemented in a single component, or Fig.18 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.18 The illustrated set (one or more) of components may perform the operations described as being performed by Fig.18 Another group of components shown performs one or more functions.

[0243] The following provides a summary of some aspects of the disclosure:

[0244] Aspect 1: A method of wireless communication performed by an apparatus of a user equipment (UE), comprising: performing sensing in a sidelink resource pool; selecting one or more sidelink resources for one or more sidelink reference signal blocks (S-RSBs) based at least in part on the sensing, wherein each S-RSB comprises at least one reference signal (RS) and sidelink control information (SCI); and sending the one or more S-RSBs in an S-RSB burst using the one or more sidelink resources.

[0245] Aspect 2: The method according to Aspect 1, wherein the sidelink resource pool is a resource pool for sidelink beam management.

[0246] Aspect 3: A method according to Aspect 1 or 2, wherein the S-RSB burst meets one or more of the following items: including a number of S-RSBs within the S-RSB burst, having a specified duration, using a time period to transmit the S-RSB burst, or using an offset to start the S-RSB burst.

[0247] Aspect 4: The method according to aspect 3, wherein the SCI indicates a time interval for resource reservation based at least in part on a time period for transmission of the S-RSB burst.

[0248] Aspect 5: The method according to any one of aspects 1-4, wherein the SCI indicates one or more time and frequency resources reserved for one or more S-RSB transmissions in one or more S-RSB bursts respectively.

[0249] Aspect 6: The method according to any one of aspects 1-5, wherein the SCI indicates an S-RSB index of the S-RSB within the S-RSB burst.

[0250] Aspect 7: The method according to any one of aspects 1 to 6, wherein the SCI indicates a transmission configuration indicator (TCI) state or a spatial filter of a beam used to transmit the S-RSB.

[0251] Aspect 8: The method according to any one of aspects 1 to 7, wherein the SCI indicates an identifier or index of a beam used to transmit the S-RSB.

[0252] Aspect 9: The method according to any one of aspects 1-8, wherein the SCI includes a source identifier.

[0253] Aspect 10: The method according to any one of aspects 1-9, wherein the SCI indicates a beam management operation, wherein the beam management operation includes beam forming, beam fine-tuning or beam measurement.

[0254] Aspect 11: A method according to any one of aspects 1-10, wherein the SCI is SCI part 1, and wherein the S-RSB includes SCI part 2 indicating one or more of a source identifier (ID) or a destination ID.

[0255] Aspect 12: The method according to any one of aspects 1-11, wherein the SCI is SCI part 1, and wherein the S-RSB includes SCI part 2 indicating preferred resources or non-preferred resources associated with the S-RSB.

[0256] Aspect 13: The method according to any one of aspects 1-12, wherein the at least one RS comprises a first RS for automatic gain control.

[0257] Aspect 14: The method according to any one of aspects 1 to 13, wherein the at least one RS includes a second RS used for beamforming, beam fine-tuning or beam measurement.

[0258] Aspect 15: The method according to any one of aspects 1-14 also includes: monitoring sidelink communication based at least in part on each of the one or more S-RSBs in the S-RSB burst; and receiving the sidelink communication.

[0259] Aspect 16: A method according to Aspect 15, wherein monitoring the sidelink communication includes: monitoring the sidelink communication in one or more resource sets based at least in part on one or more of the following: a configured duration after each S-RSB in the one or more S-RSBs in the S-RSB burst, a mapping of each resource set in the one or more resource sets to a corresponding S-RSB in the one or more S-RSBs in the S-RSB burst, or an SCI part 2 included in each of the one or more S-RSBs in the S-RSB burst.

[0260] Aspect 17: A method according to Aspect 15 or 16, wherein monitoring the sidelink communication includes: monitoring the sidelink communication using one or more receive beams, and the one or more receive beams are at least partially based on one or more corresponding transmit beams associated with each of the one or more S-RSBs in the S-RSB burst.

[0261] Aspect 18: A method according to any one of Aspects 15-17, wherein the sidelink communication includes a discovery message, a direct communication request (DCR) or a beam report.

[0262] Aspect 19: The method according to any one of aspects 1-18, wherein sending the one or more S-RSBs in the S-RSB burst includes: sending the one or more S-RSBs in a first beam scanning mode.

[0263] Aspect 20: The method according to Aspect 19 further includes: transmitting the S-RSB in a second beam scanning mode.

[0264] Aspect 21: The method according to aspect 20 further includes: receiving an indication of the selected beam associated with the second beam scanning pattern.

[0265] Aspect 22: The method according to aspect 20 or 21, wherein the first beam scanning pattern is used for beamforming, and wherein the S-RSB of the first beam scanning pattern is mapped to the second beam scanning pattern for beam fine-tuning.

[0266] Aspect 23: The method according to any one of aspects 1-22, wherein sending the one or more S-RSBs in the S-RSB burst includes: sending a repetition of the S-RSB.

[0267] Aspect 24: A method of wireless communication performed by a device of a user equipment (UE), comprising: monitoring one or more sidelink reference signal block (S-RSB) in a sidelink resource pool; receiving the one or more S-RSBs in the S-RSB burst, wherein each S-RSB in the S-RSB burst includes at least one reference signal (RS) and sidelink control information (SCI); and selecting a beam based at least in part on the one or more S-RSBs in the S-RSB burst.

[0268] Aspect 25: The method according to Aspect 24 also includes: performing sensing on sidelink communication; selecting resources for the sidelink communication based at least in part on the selected beam; and sending the sidelink communication.

[0269] Aspect 26: A method according to Aspect 25, wherein selecting the resource includes: selecting the resource from the resource set based at least in part on one or more of the following: a configured duration after each S-RSB in the one or more S-RSBs in the S-RSB burst, a mapping of the resource set to the S-RSBs in the one or more S-RSBs in the S-RSB burst, or an SCI part 2 included in each of the one or more S-RSBs in the S-RSB burst.

[0270] Aspect 27: A method according to Aspect 25 or 26, wherein sending the sidelink communication includes: sending the sidelink communication using a transmit beam associated with the selected beam.

[0271] Aspect 28: A method according to any one of Aspects 25-27, wherein the sidelink communication includes a discovery message, a direct communication request (DCR) or a beam report.

[0272] Aspect 29: A method according to any one of aspects 24-28, wherein the SCI indicates one or more time and frequency resources reserved for one or more S-RSB transmissions in one or more S-RSB bursts, respectively.

[0273] Aspect 30: A method according to any one of aspects 24-29, wherein the SCI indicates an S-RSB index of the S-RSB within the S-RSB burst.

[0274] Aspect 31: A method according to any one of aspects 24-30, wherein the SCI indicates a transmission configuration indicator (TCI) state or a spatial filter of a beam used to transmit the S-RSB.

[0275] Aspect 32: A method according to any one of aspects 24-31, wherein the SCI indicates an identifier or index of a beam used to transmit the S-RSB.

[0276] Aspect 33: A method according to any one of Aspects 24-32, wherein the SCI includes a source identifier.

[0277] Aspect 34: A method according to any one of aspects 24-33, wherein the SCI indicates a beam management operation, and wherein selecting the beam includes: selecting the beam based at least in part on the beam management operation.

[0278] Aspect 35: A method according to any one of aspects 24-34, wherein the SCI is SCI part 1, and wherein the S-RSB includes SCI part 2 indicating one or more of a source identifier (ID) or a destination ID.

[0279] Aspect 36: A method according to any one of aspects 24-35, wherein the SCI is SCI part 1, and wherein the S-RSB includes SCI part 2 indicating preferred resources or non-preferred resources associated with the S-RSB.

[0280] Aspect 37: The method according to any one of aspects 24-36, wherein the at least one RS comprises a first RS for automatic gain control.

[0281] Aspect 38: The method according to aspect 37, wherein the at least one RS includes a second RS used for beamforming, beam fine-tuning or beam measurement.

[0282] Aspect 39: A method according to any one of aspects 24-38, wherein selecting the beam includes: selecting the beam based at least in part on a measurement of the one or more S-RSBs in the S-RSB burst.

[0283] Aspect 40: The method according to any one of Aspects 24-39 further includes: mapping a resource set to an S-RSB among the one or more S-RSBs of the S-RSB burst based at least in part on a received beam identifier, a beam index, or an S-RSB index indicated in the S-RSB associated with the selected beam.

[0284] Aspect 41: The method according to any one of Aspects 24-40 further includes: determining a transmit beam based at least in part on a beam identifier, a beam index, an S-RSB index, a transmission configuration indicator (TCI) state indicated in an S-RSB associated with the selected beam, or a spatial filter indicated by the SCI.

[0285] Aspect 42: The method according to any one of aspects 24-41, wherein receiving the one or more S-RSBs in the S-RSB burst includes: receiving the one or more S-RSBs using a receive beam scanning mode.

[0286] Aspect 43: The method according to Aspect 42, wherein the receiving beam scanning pattern includes a beam scanning pattern for beam fine-tuning.

[0287] Aspect 44: A method according to any one of Aspects 24-43, wherein receiving the one or more S-RSBs in the S-RSB burst includes: using a receiving beam paired with a selected beam as part of a beam pair link to receive the one or more S-RSBs in the S-RSB burst.

[0288] Aspect 45: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform a method according to one or more of Aspects 1-44.

[0289] Aspect 46: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1-44.

[0290] Aspect 47: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of aspects 1-44.

[0291] Aspect 48: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1-44.

[0292] Aspect 49: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions, which, when executed by one or more processors of a device, causes the device to perform a method according to one or more of Aspects 1-44.

[0293] Aspect 50: A method of wireless communication performed by a user equipment (UE), comprising: performing sensing in a sidelink resource pool; selecting one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block comprises at least one beam management signal and sidelink control information (SCI); and sending the one or more sidelink beam management blocks in a sidelink beam management block burst using the one or more sidelink resources.

[0294] Aspect 51: The method according to Aspect 50, wherein the sidelink resource pool is a resource pool for sidelink beam management.

[0295] Aspect 52: A method according to any one of Aspects 50-51, wherein the sidelink beam management block burst meets one or more of the following: including a number of sidelink beam management blocks within the sidelink beam management block burst, having a specified duration, using a time period to transmit the sidelink beam management block burst, or using an offset to start the sidelink beam management block burst.

[0296] Aspect 53: A method according to Aspect 52, wherein the SCI indicates a time interval for resource reservation based at least in part on a time period for transmission of the sidelink beam management block burst.

[0297] Aspect 54: A method according to any one of Aspects 50-53, wherein the SCI indicates one or more time and frequency resources reserved for one or more sidelink beam management block transmissions in one or more sidelink beam management block bursts, respectively.

[0298] Aspect 55: A method according to any one of Aspects 50-54, wherein the SCI indicates a sidelink beam management block index of the sidelink beam management block within the sidelink beam management block burst.

[0299] Aspect 56: A method according to any one of Aspects 50-55, wherein the SCI indicates a transmission configuration indicator (TCI) state or a spatial filter of a beam used to send the sidelink beam management block.

[0300] Aspect 57: A method according to any one of Aspects 50-56, wherein the SCI indicates an identifier or index of a beam used to send the sidelink beam management block.

[0301] Aspect 58: A method according to any one of aspects 50-57, wherein the SCI includes a source identifier.

[0302] Aspect 59: A method according to any one of Aspects 50-58, wherein the SCI indicates a beam management operation, wherein the beam management operation includes beam forming, beam fine-tuning or beam measurement.

[0303] Aspect 60: A method according to any one of Aspects 50-59, wherein the SCI is SCI part 1, and wherein the sidelink beam management block includes an SCI part 2 indicating one or more of a source identifier (ID) or a destination ID.

[0304] Aspect 61: A method according to any one of Aspects 50-60, wherein the SCI is SCI part 1, and wherein the sidelink beam management block includes an SCI part 2 indicating preferred resources or non-preferred resources associated with the sidelink beam management block.

[0305] Aspect 62: A method according to any one of aspects 50-61, wherein the at least one beam management signal comprises a first reference signal for automatic gain control.

[0306] Aspect 63: A method according to any one of Aspects 50-62, wherein the at least one beam management signal comprises a reference signal, a synchronization signal, a sequence for a synchronization signal, or a sequence for a reference signal.

[0307] Aspect 64: The method according to any one of aspects 50-63, wherein the at least one beam management signal comprises a second beam management signal for beam forming, beam fine tuning or beam measurement.

[0308] Aspect 65: The method according to any one of Aspects 50-64 further includes: monitoring sidelink communications based at least in part on each of the one or more sidelink beam management blocks in the sidelink beam management block burst; and receiving the sidelink communications.

[0309] Aspect 66: A method according to Aspect 65, wherein monitoring the sidelink communication includes monitoring the sidelink communication in one or more resource sets based at least in part on one or more of the following: a configured duration after each sidelink beam management block in the one or more sidelink beam management blocks in the sidelink beam management block burst, a mapping of each resource set in the one or more resource sets to a corresponding sidelink beam management block in the one or more sidelink beam management blocks in the sidelink beam management block burst, or an SCI part 2 included in each of the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0310] Aspect 67: A method according to Aspect 65, wherein monitoring the sidelink communication includes: monitoring the sidelink communication using one or more receive beams, and the one or more receive beams are at least partially based on one or more corresponding transmit beams associated with each sidelink beam management block in the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0311] Aspect 68: A method according to Aspect 65, wherein the sidelink communication includes a discovery message, a direct communication request (DCR) or a beam report.

[0312] Aspect 69: A method according to any one of Aspects 50-68, wherein sending the one or more sidelink beam management blocks in the sidelink beam management block burst includes: sending the one or more sidelink beam management blocks in a first beam scanning mode.

[0313] Aspect 70: The method according to Aspect 69 further includes: sending a sidelink beam management block in a second beam scanning mode.

[0314] Aspect 71: The method according to aspect 70 further includes: receiving an indication of the selected beam associated with the second beam scanning pattern.

[0315] Aspect 72: A method according to Aspect 69, wherein the first beam scanning pattern is used for beamforming, and wherein the sidelink beam management block of the first beam scanning pattern is mapped to a second beam scanning pattern for beam fine-tuning.

[0316] Aspect 73: A method according to any one of Aspects 50-72, wherein sending the one or more sidelink beam management blocks in the sidelink beam management block burst includes: sending a repetition of the sidelink beam management block.

[0317] Aspect 74: A method according to any one of Aspects 50-73, wherein selecting the one or more sidelink resources for the one or more sidelink beam management blocks includes: selecting the sidelink resources to avoid conflicts with other sidelink beam management blocks.

[0318] Aspect 75: A method of wireless communication performed by a user equipment (UE), comprising: monitoring one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool; receiving the one or more sidelink beam management blocks in the sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst includes at least one beam management signal and sidelink control information (SCI); and selecting a beam based at least in part on the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0319] Aspect 76: The method according to Aspect 75 also includes: performing sensing on sidelink communication; selecting resources for the sidelink communication based at least in part on the selected beam; and sending the sidelink communication.

[0320] Aspect 77: A method according to Aspect 76, wherein selecting the resource includes: selecting the resource from the resource set based at least in part on one or more of: a configured duration after each of the one or more sidelink beam management blocks in the sidelink beam management block burst, a mapping of the resource set to the sidelink beam management blocks in the one or more sidelink beam management blocks in the sidelink beam management block burst, or an SCI part 2 included in each of the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0321] Aspect 78: A method according to Aspect 76, wherein sending the sidelink communication includes: sending the sidelink communication using a transmit beam associated with the selected beam.

[0322] Aspect 79: A method according to Aspect 76, wherein the sidelink communication includes a discovery message, a direct communication request (DCR) or a beam report.

[0323] Aspect 80: A method according to any one of Aspects 75-76, wherein the SCI indicates one or more time and frequency resources reserved for one or more sidelink beam management block transmissions in one or more sidelink beam management block bursts, respectively.

[0324] Aspect 81: A method according to any one of Aspects 75-80, wherein the SCI indicates a sidelink beam management block index of the sidelink beam management block within the sidelink beam management block burst.

[0325] Aspect 82: A method according to any one of Aspects 75-81, wherein the SCI indicates a transmission configuration indicator (TCI) state or a spatial filter of the beam used to send the sidelink beam management block.

[0326] Aspect 83: A method according to any one of Aspects 75-82, wherein the SCI indicates an identifier or index of the beam used to send the sidelink beam management block.

[0327] Aspect 84: A method according to any one of Aspects 75-83, wherein the SCI includes a source identifier.

[0328] Aspect 85: A method according to any one of aspects 75-84, wherein selecting the beam includes: selecting the beam based at least in part on the beam management operation.

[0329] Aspect 86: A method according to any one of Aspects 75-85, wherein the SCI is SCI part 1, and wherein the sidelink beam management block includes an SCI part 2 indicating one or more of a source identifier (ID) or a destination ID.

[0330] Aspect 87: A method according to any one of Aspects 75-86, wherein the SCI is SCI part 1, and wherein the sidelink beam management block includes an SCI part 2 indicating preferred resources or non-preferred resources associated with the sidelink beam management block.

[0331] Aspect 88: A method according to any one of aspects 75-87, wherein the at least one beam management signal comprises a first beam management signal for automatic gain control.

[0332] Aspect 89: The method according to aspect 88, wherein the at least one beam management signal comprises a second beam management signal for beam forming, beam fine-tuning or beam measurement.

[0333] Aspect 90: A method according to any one of Aspects 75-89, wherein selecting the beam includes: selecting the beam based at least in part on measurements of the one or more sidelink beam management blocks in the sidelink beam management block burst.

[0334] Aspect 91: The method according to any one of Aspects 75-90 further includes: mapping a resource set to a sidelink beam management block in the one or more sidelink beam management blocks of the sidelink beam management block burst based at least in part on a received beam identifier, a beam index, or a sidelink beam management block index indicated by an SCI in a sidelink beam management block associated with the selected beam.

[0335] Aspect 92: The method according to any one of Aspects 75-91 also includes: determining a transmit beam based at least in part on a beam identifier, a beam index, a sidelink beam management block index, a transmission configuration indicator (TCI) state indicated by an SCI in a sidelink beam management block associated with the selected beam, or a spatial filter indicated by the SCI.

[0336] Aspect 93: A method according to any one of Aspects 75-92, wherein receiving the one or more sidelink beam management blocks in the sidelink beam management block burst includes: using a receive beam scanning mode to receive the one or more sidelink beam management blocks.

[0337] Aspect 94: The method according to Aspect 93, wherein the receiving beam scanning pattern includes a beam scanning pattern for beam fine-tuning.

[0338] Aspect 95: A method according to any one of Aspects 75-94, wherein receiving the one or more sidelink beam management blocks in the sidelink beam management block burst includes: receiving the one or more S-RSBs in the sidelink beam management block burst using a receiving beam paired with a selected beam as part of a beam pair link.

[0339] Aspect 96: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform a method according to one or more of Aspects 50-95.

[0340] Aspect 97: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 50-95.

[0341] Aspect 98: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of aspects 50-95.

[0342] Aspect 99: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 50-95.

[0343] Aspect 100: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 50-95.

[0344] The above disclosure provides illustration and description, but is not intended to be exhaustive or to limit these aspects to the precise forms disclosed. Modifications and variations may be made based on the above disclosure or may be acquired from practice of these aspects.

[0345] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions and other examples. As used herein, a "processor" is implemented with a combination of hardware and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented with a combination of hardware and / or hardware and software in different forms. The actual special control hardware or software code for implementing these systems and / or methods is not to limit various aspects. Therefore, the operation and behavior of the system and / or method are described herein without citing a specific software code, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method at least in part based on the description herein.

[0346] As used herein, "satisfies a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0347] Although specific combinations of features are recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically recorded in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim in conjunction with each other claim in the claim set. As used herein, a phrase referring to "at least one of" a list item refers to any combination of these items (including a single member). For example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0348] Any element, action or instruction used in this article should not be interpreted as being critical or fundamental, unless so clearly described. In addition, as used herein, the article "a" and "an" are intended to include one or more, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more quoted in conjunction with the article "the", which can be used interchangeably with "one or more". In addition, as used herein, the term "set" and "group" are intended to include one or more, and can be used interchangeably with "one or more". If only want to refer to an item, phrase "only one" or similar terms will be used. In addition, as used herein, the term "has", "have", "having" etc. are intended to be open terms, and the open terms do not limit the elements (for example, "having" A elements can also have (have) B) of its revision. In addition, the phrase "based on" is intended to mean "based on at least in part", unless otherwise clearly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and used interchangeably with "and / or" unless expressly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for a user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, the one or more processors configured to cause the UE to perform the following operations: performing sensing in a sidelink resource pool; selecting one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block comprises at least one beam management signal and sidelink control information (SCI); and The one or more sidelink beam management blocks are sent in a sidelink beam management block burst using the one or more sidelink resources.

2. The device according to claim 1, wherein: The sidelink resource pool is a resource pool used for sidelink beam management.

3. The device according to claim 1, wherein: The sidelink beam management block burst complies with one or more of the following: comprising a number of sidelink beam management blocks within said sidelink beam management block burst, has a specified duration, using a time period to transmit the sidelink beam management block burst, Alternatively, an offset is used to start the sidelink beam management block burst.

4. The device according to claim 3, wherein: The SCI indicates a time interval for resource reservation based at least in part on a time period for transmission of the sidelink beam management block burst.

5. The device according to claim 1, wherein: The SCI indicates one or more time and frequency resources reserved for one or more sidelink beam management block transmissions in one or more sidelink beam management block bursts, respectively.

6. The device according to claim 1, wherein: The SCI indicates a sidelink beam management block index of a sidelink beam management block within the sidelink beam management block burst.

7. The device according to claim 1, wherein: The SCI indicates a transmission configuration indicator (TCI) state or a spatial filter of a beam used to transmit the sidelink beam management block.

8. The device according to claim 1, wherein: The SCI indicates an identifier or index of a beam used to transmit the sidelink beam management block.

9. The device according to claim 1, wherein: The SCI includes a source identifier.

10. The device according to claim 1, wherein: The SCI is SCI part 1, and wherein the sidelink beam management block includes an SCI part 2 indicating one or more of a source identifier (ID) or a destination ID.

11. The device according to claim 1, wherein: The at least one beam management signal comprises a first beam management signal for automatic gain control.

12. The device according to claim 1, wherein: The at least one beam management signal includes a reference signal, a synchronization signal, a sequence for a synchronization signal, or a sequence for a reference signal.

13. The device according to claim 1, wherein: The at least one beam management signal includes a second beam management signal used for beam forming, beam fine tuning or beam measurement.

14. The device according to claim 1, wherein: The one or more processors are configured to: monitoring sidelink communications based at least in part on each of the one or more sidelink beam management blocks in the sidelink beam management block burst; and The sidelink communication is received.

15. The device according to claim 14, wherein: To monitor the sidelink communication, the one or more processors are configured to monitor the sidelink communication in one or more resource sets based at least in part on one or more of: a configured duration after each of the one or more sidelink beam management blocks in the sidelink beam management block burst, a mapping of each of the one or more resource sets to a corresponding sidelink beam management block in the one or more sidelink beam management blocks in the sidelink beam management block burst, or The SCI part 2 is included in each of the one or more sidelink beam management blocks in the sidelink beam management block burst.

16. The device according to claim 14, wherein: In order to monitor the sidelink communication, the one or more processors are configured to: monitor the sidelink communication using one or more receive beams, and the one or more receive beams are at least partially based on one or more corresponding transmit beams associated with each sidelink beam management block in the one or more sidelink beam management blocks in the sidelink beam management block burst.

17. The device according to claim 14, wherein: The sidelink communication includes a discovery message, a direct communication request (DCR), or a beam report.

18. The device according to claim 1, wherein: To send the one or more sidelink beam management blocks in the sidelink beam management block burst, the one or more processors are configured to: send a repetition of a sidelink beam management block.

19. The device according to claim 1, wherein: To select the one or more sidelink resources for the one or more sidelink beam management blocks, the one or more processors are configured to select sidelink resources to avoid conflicts with other sidelink beam management blocks.

20. An apparatus for a user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, the one or more processors configured to cause the UE to perform the following operations: monitoring one or more sidelink beam management blocks in a sidelink beam management block burst in a sidelink resource pool; receiving the one or more sidelink beam management blocks in the sidelink beam management block burst, wherein each sidelink beam management block in the sidelink beam management block burst comprises at least one beam management signal and sidelink control information (SCI); and A beam is selected based at least in part on the one or more sidelink beam management blocks in the sidelink beam management block burst.

21. The device according to claim 20, wherein: The one or more processors are configured to: performing sensing for sidelink communications; selecting resources for the sidelink communication based at least in part on the selected beam; and The sidelink communication is transmitted.

22. The device according to claim 21, wherein To select the resource, the one or more processors are configured to select the resource from a set of resources based at least in part on one or more of: a configured duration after each of the one or more sidelink beam management blocks in the sidelink beam management block burst, a mapping of the resource set to a sidelink beam management block in the one or more sidelink beam management blocks in the sidelink beam management block burst, or The SCI part 2 is included in each of the one or more sidelink beam management blocks in the sidelink beam management block burst.

23. The device according to claim 21, wherein To transmit the sidelink communication, the one or more processors are configured to transmit the sidelink communication using a transmit beam associated with the selected beam.

24. The device according to claim 21, wherein The sidelink communication includes a discovery message, a direct communication request (DCR), or a beam report.

25. The device according to claim 20, wherein: The SCI indicates one or more time and frequency resources reserved for one or more sidelink beam management block transmissions in one or more sidelink beam management block bursts, respectively.

26. The device according to claim 20, wherein: The SCI indicates a sidelink beam management block index of the sidelink beam management block within the sidelink beam management block burst.

27. The device according to claim 20, wherein: The SCI indicates a transmission configuration indicator (TCI) state or a spatial filter of a beam used to transmit the sidelink beam management block.

28. The device according to claim 20, wherein: The SCI indicates an identifier or index of a beam used to transmit the sidelink beam management block.

29. The device according to claim 20, wherein: The SCI includes a source identifier.

30. The device according to claim 20, wherein: The SCI is SCI part 1, and wherein the sidelink beam management block includes an SCI part 2 indicating one or more of a source identifier (ID) or a destination ID.

31. The device according to claim 20, wherein: The at least one beam management signal comprises a first beam management signal for automatic gain control.

32. The device according to claim 31, wherein The at least one beam management signal includes a second beam management signal used for beam forming, beam fine tuning or beam measurement.

33. The apparatus of claim 20, wherein: To select the beam, the one or more processors are configured to select the beam based at least in part on measurements of the one or more sidelink beam management blocks in the sidelink beam management block burst.

34. The apparatus of claim 20, wherein: The one or more processors are configured to map a resource set to a sidelink beam management block in the one or more sidelink beam management blocks of the sidelink beam management block burst based at least in part on a received beam identifier, a beam index, or a sidelink beam management block index indicated by an SCI in a sidelink beam management block associated with the selected beam.

35. The apparatus of claim 20, wherein: The one or more processors are configured to determine a transmit beam based at least in part on a beam identifier, a beam index, a sidelink beam management block index, a transmission configuration indicator (TCI) state indicated by an SCI in a sidelink beam management block associated with the selected beam, or a spatial filter indicated by the SCI.

36. The apparatus of claim 20, wherein: In order to receive the one or more sidelink beam management blocks in the sidelink beam management block burst, the one or more processors are configured to: receive the one or more sidelink beam management blocks in the sidelink beam management block burst using a receiving beam paired with the selected beam as part of a beam pair link.

37. A method of wireless communication performed by an apparatus of a user equipment (UE), comprising: performing sensing in a sidelink resource pool; selecting one or more sidelink resources for one or more sidelink beam management blocks based at least in part on the sensing, wherein each sidelink beam management block comprises at least one beam management signal and sidelink control information (SCI); and The one or more sidelink beam management blocks are sent in a beam management burst using the one or more sidelink resources.

38. A method of wireless communication performed by an apparatus of a user equipment (UE), comprising: monitoring one or more sidelink beam management blocks in a beam management block burst in a sidelink resource pool; receiving the one or more sidelink beam management blocks in the beam management block burst, wherein each S-RSB in the beam management block burst comprises at least one beam management signal and sidelink control information (SCI); and A beam is selected based at least in part on the one or more S-RSBs in the beam management block burst.

Images