Transmitting channel state information according to priority of reconfigurable smart surfaces

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive, from a network node or a control UE, an indication of a priority of one or more reconfigurable smart surfaces (RISs) between the UE and the network node and one or more sub-RISs of the one or more RISs. The UE may prepare a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority. The UE may send the CSI report to the network node. Numerous other aspects are described.

Description

Technical Field

[0001] Various aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for sending channel state information (CSI) according to priorities for a reconfigurable smart surface (RIS). Background Art

[0002] Wireless communication systems are 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).

[0003] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple 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 side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0004] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink, CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink to better integrate with other open standards; and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0005] In some specific implementations, a user equipment (UE) includes: a memory; and one or more processors, the one or more processors coupled to the memory and configured to: receive an indication of the priority of one or more reconfigurable intelligent surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs from a network node or a controlling UE; prepare a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; and send the CSI report to the network node.

[0006] In some specific implementations, a network node includes: a memory; and one or more processors, the one or more processors coupled to the memory and configured to: send an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node to a UE; and receive a CSI report for the one or more RISs and the one or more sub-RISs from the UE, wherein the CSI report is prepared at least in part based on the indication of the priority.

[0007] In some specific implementations, a method of wireless communication performed by a UE includes: receiving an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node from a network node or a controlling UE; preparing a CSI report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; and sending the CSI report to the network node.

[0008] In some specific implementations, a method of wireless communication performed by a network node includes: sending an indication of the priority of one or more RISs between the UE and the network node and one or more sub-RISs in the one or more RISs to a UE; and receiving a CSI report for the one or more RISs and the one or more sub-RISs from the UE, wherein the CSI report is prepared at least in part based on the indication of the priority.

[0009] In some specific implementations, a non-transitory computer-readable medium storing an instruction set for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node from a network node or a controlling UE; prepare a CSI report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; and send the CSI report to the network node.

[0010] In some specific implementations, a non-transitory computer-readable medium storing an instruction set for wireless communication includes one or more instructions that, when executed by one or more processors of a network node, cause the network node to: send an indication of priorities of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node to a UE; and receive a CSI report for the one or more RISs and the one or more sub-RISs from the UE, wherein the CSI report is prepared based at least in part on the indication of the priority.

[0011] In some specific implementations, an apparatus for wireless communication includes: a component for receiving an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the apparatus and the network node from a network node or a controlling UE; a component for preparing a CSI report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; and a component for sending the CSI report to the network node.

[0012] In some specific implementations, an apparatus for wireless communication includes: a component for sending an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the apparatus to a UE; and a component for receiving a CSI report for the one or more RISs and the one or more sub-RISs from the UE, wherein the CSI report is prepared at least in part based on the indication of the priority.

[0013] Aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0014] The features and technical advantages of examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, and not as a definition of the limitations of the claims.

[0015] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment 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 equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to be able to understand the above-mentioned features of the present disclosure in detail, a more specific description briefly summarized above can be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0017] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0018] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0019] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0020] Figure 4 is a diagram illustrating an example of a reconfigurable smart surface (RIS) according to the present disclosure.

[0021] Figure 5 is a diagram illustrating an example of reference signal based precoder selection according to the present disclosure.

[0022] Figure 6 is a diagram illustrating an example of partial channel state information (CSI) omission according to the present disclosure.

[0023] Figures 7 to 11 is a diagram illustrating an example associated with transmitting CSI according to a priority of RIS according to the present disclosure.

[0024] Figure 12 to Figure 13 is a diagram illustrating an example process associated with transmitting CSI according to priorities of RIS according to the present disclosure.

[0025] Figure 14 to Figure 15 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0026] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is independently or in combination with any other aspect of the disclosure. For example, any number of aspects stated herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functionality, or structure and functionality in addition to the various aspects of the disclosure stated herein or different from the various aspects of the disclosure stated herein. It should be understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of the present invention.

[0027] Several 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 illustrated 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 a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0028] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or 5G and beyond (e.g., 6G) RATs.

[0029] Figure 1 1 is a diagram illustrating 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 (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, 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), user equipment (UE) 120 or multiple 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 in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). For another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0030] 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 equipment, 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 (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0031] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to a coverage area of ​​the network node 110 and / or a network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a micro cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A micro cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with a femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a micro cell may 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 a home network node. Figure 1In the example shown in , 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).

[0032] 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 a function, or to repeatedly perform at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions 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.

[0033] 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 transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110d (e.g., a relay network node) can communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communication 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.

[0034] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as 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 impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0035] The network controller 130 may be coupled to or communicate with a collection of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless or wired backhaul communication link. In some aspects, the network controller 130 may be, or may include, a CU or a core network device.

[0036] 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 subscriber 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 computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0037] Some UE 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UE. MTC UE and / or eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor and / or a location tag, which may communicate with a network node, another device (e.g., a remote device) or some other entity. Some UE 120 may be considered as an Internet of Things (IoT) device and / or may be implemented as a NB-IoT (narrowband IoT) device. Some UE 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. 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 operably coupled, communicatively coupled, electronically coupled and / or electrically coupled.

[0038] Generally speaking, any number of wireless networks 100 may be deployed in a given geographic area. 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. 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.

[0039] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more side link channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0040] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the 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 ranges designated 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 the "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0041] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, so the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6GHz-71GHz), FR4 (52.6GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0042] In view of the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term can be broadly referred to as a frequency that can be lower 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, the term can be broadly referred to as a frequency 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 contemplated 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.

[0043] In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive an indication of a priority of one or more reconfigurable intelligent surfaces (RIS) and one or more sub-RISs in the one or more RISs between the UE and the network node from a network node or a controlling UE. Prepare a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; and send the CSI report to the network node. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0044] In some aspects, a network node (e.g., network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may send an indication of a priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node to the UE. And receive a CSI report for the one or more RISs and one or more sub-RISs from the UE, wherein the CSI report is prepared based at least in part on the indication of the priority. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0045] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0046] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). 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.

[0047] 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 allocation 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) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of 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 corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0048] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) can receive downlink signals from the network node 110 and / or other network nodes 110 and can 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 can be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 can use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert and / or digitize) the received signal to obtain input samples. Each modem 254 can use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 can obtain received symbols from the modem 254, can perform MIMO detection on the received symbols where applicable, and can 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 things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0049] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0050] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2One or more antenna elements of one or more components in.

[0051] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 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. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, reference Figures 7 to 15 )Aspects of any of the methods described herein.

[0052] 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 modem 232 (e.g., a demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted 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 communication and / or uplink communication. 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 antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform operations described herein (e.g., with reference to Figures 7 to 15 )Aspects of any of the methods described herein.

[0053] 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 the network node 110 may perform one or more techniques associated with sending CSI according to the priority of RIS, 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 of the can perform or direct e.g. Fig.12 The process 1200 Fig.13 1300 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, the 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 the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Fig.12 The process 1200 Fig.13 The process 1300 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0054] In some aspects, a UE (e.g., UE 120) includes: a component for receiving an indication of a priority of one or more RISs and one or more sub-RISs in one or more RISs between the UE and the network node from a network node or controlling the UE; a component for preparing a CSI report for one or more RISs and one or more sub-RISs based at least in part on the indication of the priority; and / or a component for sending the CSI report to the network node. In some aspects, the components for the UE to perform the operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0055] In some aspects, a network node (e.g., network node 110) includes: a component for sending an indication of a priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node to the UE; and / or a component for receiving a CSI report for one or more RISs and one or more sub-RISs from the UE, wherein the CSI report is prepared based at least in part on the indication of the priority. In some aspects, the components for the network node to perform the operations described herein may include, for example, one or more of the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0056] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described for 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.

[0057] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0058] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. 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 network equipment 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, etc.) or one or more units (or one or more components) that perform base station functionality 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 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).

[0059] 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, the 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 across one or more other network nodes. The 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), and the like.

[0060] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that may be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality 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.

[0061] Figure 3 3 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310, which may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links (such as via an F1 interface). Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0062] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of the units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, the wireless interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, or both.

[0063] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0064] Each DU 330 may correspond to a logical unit including one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional split such as defined by 3GPP. In some aspects, one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may further host one or more low PHY layers, such as by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0065] Each RU 340 may implement lower layer functionality. In some deployments, a RU 340 controlled by a DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. based on a functional split (e.g., a functional split defined by 3GPP) (such as a lower layer functional split). In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0066] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via an O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0067] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or communicate with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0068] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0069] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0070] Massive MIMO can achieve increased throughput in NR systems. Massive MIMO can achieve high beamforming gain by using active antenna units. Massive MIMO can involve separate RF chains for each antenna port. High beamforming gain and / or separate RF chains for each antenna port can partially enable increased throughput. In the case of massive MIMO, power consumption may increase significantly due to the use of active antenna units (AAUs).

[0071] RIS is a network element for extending NR coverage with negligible power consumption. RIS may be a mirror-like near-passive device. RIS may include an X element in the horizontal direction and a Y element in the vertical direction. In other words, RIS may consist of X times Y elements. Each element may reflect a waveform incident on the surface of the element. The waveform may be sent by a network node or a UE. Each element may reflect a waveform based at least in part on a reflection coefficient so that the waveform may be reflected in one direction. The waveform striking the element may be an incident waveform, and the waveform reflected from the element may be a reflected waveform. The direction in which the waveform is reflected may be a function of the reflection coefficient and / or phase associated with the element reflecting the waveform.

[0072] The direction in which the waveform is reflected or the reflection direction may be controlled by the network node. For example, the network node may send an indication of the reflection direction to a RIS controller associated with the RIS. The indication of the reflection direction may indicate a reflection coefficient and / or phase of each element associated with the RIS. The RIS controller may adjust the reflection coefficient and / or phase of each element based at least in part on the indication received from the network node.

[0073] Figure 4is a diagram illustrating an example 400 of a RIS according to the present disclosure.

[0074] As indicated by reference numeral 402, a first network node (gNB1) may send a first downlink transmission to a first UE (UE1). A second network node (gNB2) may send a second downlink transmission to a second UE (UE2). The first UE and the second UE may be separated by an obstruction. Therefore, the downlink transmission from the first network node may not be received by the second UE, and the downlink transmission from the second network node may not be received by the first UE.

[0075] As shown in reference numeral 404, the RIS may be employed near an obstruction. The first network node may send a first downlink transmission to the first UE and send a second downlink transmission to the RIS. The RIS may include a plurality of elements that reflect the second downlink transmission in a direction toward the second UE. Thus, the first network node may effectively perform a downlink transmission to the second UE via the RIS even if there is an obstruction between the first network node and the second UE.

[0076] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0077] Figure 5 is a diagram illustrating an example 500 of reference signal based precoder selection according to the present disclosure.

[0078] As indicated by reference numeral 502, the network node may send multiple reference signals (e.g., RS1, RS2, ..., RS M) in the downlink to the RIS. Each reference signal may be associated with a phase and a reference signal opportunity. Multiple reference signals may be associated with M reference signal opportunities. Multiple reference signals may be reflected toward multiple directions (e.g., φ1, φ2, ..., φM). As indicated by reference numeral 504, multiple reference signals may be reflected from the RIS and received at the UE. The RIS may use a different precoder (e.g., codebook or non-codebook precoder) and / or phase for each reference signal associated with each reference signal opportunity.

[0079] The UE may measure a power level (e.g., RSRP) associated with each of a plurality of reference signals associated with M reference signal opportunities. The UE may identify a reference signal having the highest power level compared to other reference signals. The UE may send a reference signal index associated with the reference signal having the highest power level to a controller associated with the RIS and / or a network node. The reference signal having the highest power level may be a reference signal having the best energy, RSRP, RSRQ, signal-to-interference-and-noise ratio (SINR), channel quality indicator (CQI), and / or channel metric compared to other reference signals. The network node and / or controller may select a pre-decoder for the reference signal opportunity associated with the reference signal having the highest power level. Thus, the network node and / or controller may be able to determine which pre-decoder or RIS beamformer is optimal for serving the UE. In some cases, the network node may send multiple reference signals to the RIS in the downlink. Alternatively, the UE may send multiple reference signals to the RIS in the uplink.

[0080] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0081] Priorities and conflict rules may be defined in the NR system. Two or more channel state information (CSI) reports may conflict with each other so that two or more CSI reports may be scheduled to be sent from the UE to the network node at the same time. For example, a periodic CSI report and an aperiodic CSI report may be scheduled to be sent at the same time. In some cases, the number of CSI reports scheduled to be sent simultaneously may result in a payload size that is too large to fit in the uplink control information (UCI) container, which may be due to the need for hybrid automatic repeat request acknowledgment (HARQ-ACK) and / or scheduling request (SR) to be multiplexed additionally. In these cases, some CSI reports may be discarded or omitted.

[0082] Multiple prioritization rules may be defined for determining which CSI reports should be dropped or omitted by the UE and which CSI reports should be sent to the network node. The CSI reports may be prioritized first based on the corresponding time domain behavior and physical channel, where a more dynamic CSI report may be prioritized over a less dynamic CSI report, and where the priority of the physical uplink shared channel (PUSCH) may be higher than the priority of the physical uplink control channel (PUCCH). Aperiodic CSI reports may have a higher priority than semi-persistent CSI reports on PUSCH. Semi-persistent CSI reports on PUSCH may have a higher priority than semi-persistent CSI reports on PUCCH. Semi-persistent CSI reports on PUCCH may have a higher priority than periodic CSI reports.

[0083] When multiple CSI reports with the same time domain behavior and physical channel collide with each other, the CSI reports can be further prioritized based on the CSI content. Beam reports (e.g., Layer 1 (L1)-RSRP reports) can have a higher priority than regular CSI reports. CSI reports can be conditional on the serving beam, so if the beam is not correct, the CSI report may not be useful.

[0084] The CSI reports may be further prioritized based at least in part on which serving cell the CSI report corresponds to (e.g., in the case of carrier aggregation operation). A CSI report corresponding to a primary cell (PCell) may have a higher priority than a CSI report corresponding to a secondary cell (SCell). Additionally, to avoid ambiguity in sending CSI reports, the CSI reports may be prioritized based at least in part on a report configuration identifier (reportConfigID).

[0085] Prioritization rules may be applied so that only a single CSI report is sent in case of CSI report collisions, with the exception of when multiple PUCCH-based CSI reports collide. In this case, the UE may be configured with a larger multi-CSIPUCCH resource, where multiple CSI reports may be multiplexed in case of CSI report collisions. The UE may send as many CSI reports as possible in the multi-CSIPUCCH resource as long as the maximum UCI code rate is not exceeded.

[0086] For PUSCH-based CSI reporting and in particular for type IICSI reporting, the CSI payload size may vary depending on the rank indicator (RI) selection. For example, for type IICSI reporting, the size of the precoding matrix indicator (PMI) payload for RI=2 is approximately twice the size of the PMI payload for RI=1. Since the RI selection is unknown to the network node before scheduling aperiodic CSI reporting on PUSCH, the network node may use an estimate of the RI selection to allocate PUSCH resources (e.g., in the frequency domain and in the time domain). For example, the network node may allocate PUSCH resources based at least in part on historical RI reports. In some cases, the network node may allocate PUSCH resources assuming that the UE will report RI=1, but the UE may actually report RI=2 later. In this case, the CSI payload may not fit in the PUSCH container (e.g., the code rate may exceed a threshold, or the uncoded systematic bits may not fit in the PUSCH container). A scheme for partial CSI omission for PUSCH-based CSI in NR may be implemented instead of discarding the entire CSI report (which would be wasteful). Still, a portion of the CSI payload may be reported which may provide information about the RI selection so that the network node may allocate appropriate PUSCH resources for the next aperiodic CSI request.

[0087] Partial CSI omission of PUSCH-based CSI in NR can be achieved by ordering the CSI content in a specific way. When multiple CSI reports are sent in PUSCH, the wideband CSI components (e.g., wideband PMI and channel quality indicator (CQI)) for multiple CSI reports (e.g., all CSI reports) can be mapped to the most significant bits of UCI. Subsequently, the subband CSI for each CSI report can be mapped according to some priority rules, where the subband CSI for even-numbered subbands can be mapped first, followed by the subband CSI for odd-numbered subbands.

[0088] When the resulting code rate of UCI exceeds a threshold, a portion of the least significant UCI bits may be omitted until the code rate drops below the threshold. Subband CSI for odd-numbered subbands for CSI reporting may be omitted first. The network node may have subband PMI and CQI for any other subband in the frequency domain, which may enable the network node to interpolate PMI / CQI between two reported subbands to attempt to estimate the missing PMI / CQI value for the middle subband. Such reconstruction may provide better performance than omitting CSI for an entire block of consecutive subbands.

[0089] Figure 6 is a diagram illustrating an example 600 of partial CSI omission according to the present disclosure.

[0090] like Figure 6 As shown in , the wideband CSI components for multiple CSI reports can be mapped to the most significant bits of UCI. The subband CSI for each CSI report can be mapped according to the priority rule. The subband CSI for the even-numbered subbands for CSI reporting can be mapped before the subbands for the odd-numbered subbands for CSI reporting. For example, UCI may include even subband CSI report #1, odd subband CSI report #1, and even subband CSI report #2. A portion of the least significant CSI bits can be omitted. For example, odd subband CSI report #2, even subband CSI report #N, and odd subband CSI report #N can be omitted.

[0091] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0092] CSI reports can be reported with a priority value Pri iCSI (y,k,c,s)=2·N cells ·M s y+N cells ·M s ·k+M s c+s, where y=0 indicates an aperiodic CSI report to be carried on PUSCH, y=1 indicates a semi-persistent CSI report to be carried on PUSCH, y=2 indicates a semi-persistent CSI report to be carried on PUCCH, and y=3 indicates a periodic CSI report to be carried on PUCCH. In addition, k=0 indicates a CSI report carrying L1-RSRP or L1-SINR, and k=1 indicates a CSI report not carrying L1-RSRP or L1-SINR. In addition, c is the serving cell index, and N cells is the value of the maximum number of serving cells (maxNrofServingCells) higher layer parameter. In addition, s is the report configuration identifier (reportConfigID), and M s is the value of the maximum number of CSI report configurations (maxNrofCSI-ReportConfigurations) higher layer parameter.

[0093] When the associated Pri iCSlWhen the (y,k,c,s) value is lower for the first CSI report than for the second CSI report, the first CSI report may have a higher priority than the second CSI report. For example, when the time occupancy of the physical channels scheduled to carry two CSI reports overlaps in at least one OFDM symbol and are sent on the same carrier, the two CSI reports may conflict with each other. When the UE is configured to send two conflicting CSI reports, and when the y value is different between the two CSI reports, certain rules may apply, except for the case when one of the y values ​​is 2 and the other y value is 3 for a CSI report sent on PUSCH or PUCCH. According to these rules, the one with the higher Priority is prioritized. iCSI The CSI report for the (y, k, c, s) value may not be transmitted by the UE. Otherwise, the two CSI reports may be multiplexed, or either CSI report may be dropped based at least in part on the corresponding priority value.

[0094] A UE may be requested to measure and report CSI associated with a sub-RIS (or cluster) within a RIS (a RIS). A sub-RIS may be a RIS element within a RIS. A RIS may include multiple sub-RISs (or multiple clusters or RIS elements). A sub-RIS may serve a certain area or a group of UEs within a certain area. CSI associated with some sub-RISs may be more important than CSI associated with other sub-RISs. When a certain sub-RIS is serving multiple UEs, a new UE that is trying to use the sub-RIS may be given a lower priority than another sub-RIS (or multiple RISs) that is serving a lower number of UEs. A higher priority RIS may be based at least in part on whether the RIS has an active component (e.g., whether the RIS has a power amplifier on some sub-RISs). When a sub-RIS within a RIS has a power amplifier and other sub-RISs do not have a power amplifier, the sub-RIS may have a higher priority than other sub-RISs within the RIS.

[0095] The UE may measure CSI associated with multiple sub-RISs (and potentially multiple RISs) within a specific RIS. The UE may measure CSI based at least in part on one or more reference signals received from a network node. As part of a training procedure, the network node may send one or more reference signals. The UE may measure CSI of multiple sub-RISs. The UE may need to report CSI to the network node. However, the UE may not be configured to bundle CSI from multiple sub-RISs for transmission to the network node. In addition, when the total payload size meets a threshold, the UE may not be configured to discard certain CSI from multiple sub-RISs. Therefore, when attempting to bundle and transmit CSI for multiple sub-RISs that conflict with each other, some CSI that may be considered more important than other CSI may be inadvertently discarded, which may reduce the performance of the UE.

[0096] In various aspects of the techniques and devices described herein, a UE may receive an indication of the priority of one or more RISs and one or more sub-RISs in one or more RISs between the UE and the network node from a network node or a controlling UE. The indication may indicate the priority of each RIS in one or more RISs and / or each sub-RIS of a specific RIS. The UE may prepare a CSI report for one or more RISs and one or more sub-RISs based at least in part on the indication of the priority. When preparing the CSI report, the UE may multiplex or discard the CSI associated with a specific RIS in one or more RISs and / or a specific sub-RIS in one or more sub-RISs based at least in part on the indication of the priority. The UE may send a CSI report to the network node. In some aspects, the UE may multiplex or discard the CSI associated with the RIS and / or sub-RIS based at least in part on the priority associated with each of the RIS and / or sub-RIS. Therefore, the UE may send a higher priority CSI and only discard a lower priority CSI, thereby improving the performance of the UE. The UE may not inadvertently discard a higher priority CSI, which would otherwise degrade the performance of the UE.

[0097] Figure 7 is a diagram illustrating an example 700 associated with transmitting CSI according to a priority of RIS according to the present disclosure. Figure 7 As shown in , example 700 includes communications between a UE (e.g., UE 120), a RIS (e.g., RIS 122), and a network node (e.g., network node 110). In some aspects, the UE, RIS, and network node may be included in a wireless network (such as wireless network 100).

[0098] As shown in reference numeral 702, the UE may receive an indication of the priority of one or more RISs and one or more sub-RISs in one or more RISs between the UE and the network node from a network node or a controlling UE. The UE may receive an indication of the priority via one or more RISs and / or one or more sub-RISs. The UE may receive an indication of the priority of each RIS and / or sub-RIS. The sub-RIS may be a RIS element within a specific RIS. In other words, a RIS may include multiple sub-RISs. The UE may be able to convey signals to multiple RISs at a given time. Different RISs and / or sub-RISs may be associated with different priorities depending on the relative importance level of the RIS and / or sub-RIS. For example, a RIS including a power amplifier may have a higher priority than a RIS not including a power amplifier. Each RIS and / or sub-RIS may serve a group of UEs within an area or a certain area.

[0099] As indicated by reference numeral 704, the UE may prepare a CSI report for one or more RISs and one or more sub-RISs based at least in part on the indication of the priority. When preparing the CSI report, the UE may multiplex the CSI associated with a specific RIS in the one or more RISs and / or a specific sub-RIS in the one or more sub-RISs based at least in part on the indication of the priority. When preparing the CSI report, the UE may discard the CSI associated with a specific RIS in the one or more RISs and / or a specific sub-RIS in the one or more sub-RISs based at least in part on the indication of the priority. In other words, the UE may use the indication of the priority to determine how to multiplex / bundle / discard the CSI associated with certain RISs and / or sub-RISs and prepare the CSI report.

[0100] In some aspects, the UE may receive one or more reference signals for training one or more RISs from a network node during a training procedure. The UE may receive one or more reference signals for training one or more sub-RISs in one or more RISs from a network node during a training procedure. The UE may prepare a CSI report based at least in part on CSI associated with one or more reference signals for training one or more RISs and one or more reference signals for training one or more sub-RISs. In other words, the UE may perform measurements of reference signals for training the RIS and / or sub-RISs, and the UE may report the measurements in a CSI report. The CSI report indicating the CSI may include measurements of reference signals for training the RIS and / or sub-RISs.

[0101] In some aspects, the UE may receive an indication of different priority levels for each CSI report or each CSI resource from a network node. The indication of different priority levels may define a first level associated with an aperiodic CSI report, a semi-persistent CSI report, or a periodic CSI report. The indication of different priority levels may define a second level associated with a beam management CSI report or a channel quality indicator CSI report. The indication of different priority levels may define a third level associated with a CSI report for each component carrier. The indication of different priority levels may define a fourth level associated with a CSI report for each report identifier. The indication of different priority levels may define a fifth level associated with a CSI report for each RIS identifier. The indication of different priority levels may define a sixth level associated with a CSI report for each sub-RIS identifier. In other words, a new priority may be defined for each CSI report or for each CSI resource to distinguish between a legacy CSI report, a RIS CSI report, or a sub-RIS CSI report.

[0102] In some aspects, when preparing a CSI report, the UE may bundle CSI starting with the highest priority RIS CSI (e.g., CSI associated with the highest priority RIS compared to other RISs). Depending on the available payload size of the CSI report, the UE may discard the lower priority of each sub-RIS CSI (e.g., CSI associated with a lower priority sub-RIS). In other words, for CSI report bundling across RISs and sub-RISs within one RIS, the UE may start with the high priority RIS CSI and then start discarding each sub-RIS CSI as needed. In some aspects, when preparing a CSI report, the UE may bundle CSI starting with the highest priority sub-RIS CSI (e.g., CSI associated with the highest priority sub-RIS compared to other sub-RISs). The UE may combine sub-RIS CSIs across RISs. Depending on the available payload size of the CSI report, the UE may discard the lower priority of each RIS CSI (e.g., CSI associated with a lower priority RIS compared to other RISs). In other words, for CSI report bundling across RISs and sub-RISs within one RIS, the UE may start with high priority CSI between sub-RISs of one RIS, combine the CSI across RISs, and then drop per RIS CSI as needed.

[0103] In some aspects, the CSI report may indicate the best beam from each of the one or more sub-RISs and the best beam for each of the one or more RISs. The CSI report may indicate the worst beam from each of the one or more sub-RISs and the worst beam for each of the one or more RISs. The CSI report may indicate the best common phase vector used between the sub-RISs within the RIS in one or more RISs or between the RISs in one or more RISs. The CSI report may indicate the best sub-RIS from each of the one or more RISs and the best common phase vector of the sub-RIS across the one or more RISs. In some aspects, the CSI report may be associated with the RIS in one or more RISs. The CSI report may indicate the average CSI of the sub-RIS across the RIS, or the CSI report may indicate the CSI of each RIS. In some aspects, the UE may generate multiple CSI reports, each of which may be associated with a CSI report priority. In other words, each CSI report in the multiple CSI reports may have its own priority. The CSI report priority may be based at least in part on the priority of each of the one or more RISs and the priority of each of the one or more sub-RISs.

[0104] In some aspects, the UE may generate multiple CSI reports, such as a first CSI report and a second CSI report. In some aspects, the first CSI report may be associated with a RIS in one or more RISs. The second CSI report may also be associated with a RIS. The first CSI report may conflict with the second CSI report. When preparing the CSI report, the UE may multiplex or discard one of the first CSI report or the second CSI report based at least in part on an indication of priority. In some aspects, the first CSI report may be associated with the RIS, and the second CSI report may be associated with a direct link between the UE and the network node, or the second CSI report may be associated with a sidelink interface of the UE. When preparing the CSI report, the UE may multiplex or discard one of the first CSI report or the second CSI report based at least in part on an indication of priority.

[0105] In some aspects, the UE may receive from the network node an on-off pattern of one or more sub-RISs of the RIS in one or more RISs, wherein the pattern may be associated with training of the RIS. With respect to serving the UE, the pattern may be defined for each RIS. The UE may receive the pattern from the network node via L1 signaling, layer 2 (L2) signaling, or layer 3 (L3) signaling.

[0106] As indicated by reference numeral 706, the UE may send a CSI report to the network node. The CSI report may indicate CSI of one or more RISs and / or one or more sub-RISs. The CSI may indicate RSRP, RSRQ, SINR, CQI, and / or channel metrics associated with the one or more RISs and / or one or more sub-RISs, which may be based at least in part on one or more reference signals. The UE may send the CSI report to the network node via one of the one or more RISs (e.g., a RIS associated with the best CSI compared to the other RISs).

[0107] As indicated above, Figure 7 are provided as examples. Other examples can be found in the Figure 7 The examples described are different.

[0108] In some aspects, a network node (or a controlling UE capable of controlling a RIS and / or a sub-RIS) may send an indication to a UE regarding a particular priority of each RIS or sub-RIS. For example, the indication may indicate that a certain RIS has a higher priority than another RIS, and / or that a certain sub-RIS within a RIS has a higher priority than another sub-RIS within a RIS. The UE may multiplex or bundle CSI associated with multiple sub-RISs (and potentially multiple RISs) based at least in part on the indication. The UE may prepare a CSI report with CSI based at least in part on the indication. In other words, a UE calculating CSI may use the indication received from the network node when multiplexing, bundling and / or discarding CSI for transmission to the network node.

[0109] In some aspects, the new priority may be defined per report or per resource to distinguish between legacy CSI reports, RIS-related CSI reports, and / or sub-RIS-related CSI reports. A priority scheme with different priority levels may define a first level, which may be associated with aperiodic, semi-persistent, or periodic CSI reports. For example, aperiodic CSI reports may have a higher priority than semi-persistent or periodic CSI reports. The priority scheme may define a second level, which may be associated with CSI reports related to beam management or CQI. For example, CSI reports related to beam management may have a higher priority than CSI reports related to CQI. The priority scheme may define a third level, which may include component carriers. For example, a CSI report with a higher component carrier number may have a higher priority than a CSI report with a lower component carrier number, or vice versa. The priority scheme may include a fourth level, which may include a report identifier. For example, a CSI report with a higher report identifier may have a higher priority than a CSI report with a lower report identifier, or vice versa. The priority scheme may define a fifth level, which may be a RIS identifier. For example, a CSI report with a higher RIS identifier may have a higher priority than a CSI report with a lower RIS identifier, or vice versa. The priority scheme may define a sixth level, which may be a sub-RIS identifier. For example, a CSI report with a higher sub-RIS identifier may have a higher priority than a CSI report with a lower sub-RIS identifier, or vice versa.

[0110] Figure 8 is a diagram illustrating an example 800 associated with transmitting CSI according to priorities of RIS according to the present disclosure.

[0111] like Figure 8As shown in , the CSI content may include RIS1 and sub-RIS1 CSI, RIS1 and sub-RIS2 CSI, RIS1 and sub-RIS3 CSI, and RIS1 and sub-RIS-K CSI. The CSI content may include RIS2 and sub-RIS1 CSI, RIS2 and sub-RIS2 CSI, RIS2 and sub-RIS3 CSI, and RIS2 and sub-RIS-K CSI. For each RIS, the CSI content may include CSI associated with each sub-RIS of a particular RIS. The CSI associated with each sub-RIS and the CSI of each RIS may be multiplexed or bundled together to form CSI content, which may be sent by the UE to the network node.

[0112] As indicated above, Figure 8 are provided as examples. Other examples can be found in the Figure 8 The examples described are different.

[0113] Fig. 9 is a diagram illustrating an example 900 associated with transmitting CSI according to priorities of RIS according to the present disclosure.

[0114] like Fig. 9 As shown in , during the training procedure, the network node may send one or more reference signals to train one or more RISs and train one or more sub-RISs within the one or more RISs. The UE may receive one or more training signals from the network node via the one or more RISs and / or via the one or more sub-RISs. The UE may perform measurements associated with the one or more training signals. The UE may send a UE report to the network node to indicate the measurements. When preparing the UE report, the UE may multiplex or bundle CSI associated with the one or more RISs and / or the one or more sub-RISs based at least in part on priorities associated with the one or more RISs and / or the one or more sub-RISs.

[0115] As indicated above, Fig. 9 are provided as examples. Other examples can be found in the Fig. 9 The examples described are different.

[0116] In some aspects, a CSI report received from a RIS may indicate an average CSI across multiple sub-RISs of a RIS and / or the CSI of each sub-RIS. The CSI report may indicate the best K beams from each sub-RIS of the RIS, and the best Y beams from each RIS (these beams may be averaged across multiple sub-RISs within the RIS, or have specific beam training for the entire RIS). The CSI report may indicate the worst E beams from each sub-RIS of the RIS, and the worst F beams from each RIS (these beams may be averaged across multiple sub-RISs within the RIS, or have specific beam training for the entire RIS). The CSI report may indicate the best common phase vector used between sub-RISs within the RIS and / or between RISs. For example, the CSI report may indicate the best Z combinations for each RIS and across multiple RISs. The CSI report may indicate the best sub-RIS from each RIS and the best common phase across those sub-RISs.

[0117] In some aspects, different CSI reports may have their own priorities. For example, a first CSI report indicating the best K beams from each sub-RIS of a RIS and the best Y beams from each RIS may have a different priority than a second CSI report indicating the worst E beams from each sub-RIS of a RIS and the worst F beams from each RIS. When a CSI report is based at least in part on a combination of a RIS and a sub-RIS, the priority associated with the CSI report may be based at least in part on the highest priority among all RISs and sub-RISs in a RIS and a sub-RIS, or a new priority may be given for each combination of a RIS and a sub-RIS. In some aspects, for CSI report bundling across RISs and across sub-RISs within a RIS, the UE may start with a high priority between RISs and then start discarding each sub-RIS CSI as needed. Alternatively, the UE may start with a high priority between the sub-RISs of each RIS, and then the UE may combine across RISs and then discard the CSI of each RIS as needed.

[0118] Fig.10 is a diagram illustrating an example 1000 associated with transmitting CSI according to priorities of RIS according to the present disclosure.

[0119] like Fig.10As shown in , the CSI report may indicate CSI for multiple RISs. For example, the CSI report may indicate the average CSI of RIS1, the average CSI of RIS2, and the average CSI of RIS#N. RIS1 may have the highest priority, RIS2 may have the second highest priority, and so on. The CSI report may then indicate one or more sub-RISs for each RIS. For example, the CSI may indicate the even sub-RIS CSI of RIS1, the odd sub-RIS of RIS1, the even sub-RIS CSI of RIS#N, and the odd sub-RIS CSI of RIS#N. In other words, the CSI report may include CSI for multiple RISs, where each of the multiple RISs may have at least one sub-RIS.

[0120] As indicated above, Fig.10 are provided as examples. Other examples can be found in the Fig.10 The examples described are different.

[0121] In some aspects, when a UE is configured with two CSI reports for a particular RIS and the two CSI reports conflict with each other in the PHY layer, the UE may implement multiplexing and dropping rules across the CSI reports from the particular RIS (e.g., the entire CSI report from the RIS). The UE may use the highest priority indication of the RIS to resolve the conflict (or contradiction) between the two CSI reports.

[0122] In some aspects, the UE may have its own CSI report. The CSI report may be used for a direct link between the UE and the network node. The UE may send a CSI report (e.g., a CSI report associated with the sidelink interface of the UE) to the network node from a sidelink, wherein at least one of the CSI reports may be a legacy CSI report. The UE may also have a CSI report associated with a RIS and / or a sub-RIS associated with the RIS. The UE may multiplex or discard certain CSI reports (e.g., the UE's own CSI report and a CSI report associated with the RIS and / or the sub-RIS) based at least in part on the priority of each CSI report. After multiplexing or discarding, the UE may send a CSI report that may have a type 1 report (e.g., a CSI report for the RIS and / or the sub-RIS) and a legacy CSI report (e.g., a CSI report associated with a wideband and / or a sub-band).

[0123] In some aspects, when training a RIS, an on / off pattern across sub-RISs may be used. The pattern may be defined for each RIS, regardless of the serving UE. The pattern may be defined for multiple RISs (e.g., all RISs) based at least in part on a procedure for splitting the RIS surface into sub-RISs. The network node or controlling UE may indicate the pattern to the UE via L1, L2, or L3 signaling.

[0124] Fig.11 is a diagram illustrating an example 1100 associated with transmitting CSI according to priorities of RIS according to the present disclosure.

[0125] like Fig.11 As shown in , a mode can define the on / off of sub-RIS across RIS. A mode can indicate that the first sub-RIS should be on. A mode can indicate that the second sub-RIS should be off. A mode can indicate that the third sub-RIS should be on. A mode can indicate that the fourth sub-RIS should be off. This mode can be used when training RIS.

[0126] As indicated above, Fig.11 are provided as examples. Other examples can be found in the Fig.11 The examples described are different.

[0127] Fig.12 is a diagram illustrating an example process 1200 performed, for example, by a UE according to the present disclosure. Example process 1200 is an example in which a UE (eg, UE 120) performs operations associated with sending CSI according to priorities of RIS.

[0128] like Fig.12 As shown in FIG. 1 , in some aspects, process 1200 may include receiving, from a network node or a controlling UE, an indication of a priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node (block 1210). For example, a UE (e.g., using Fig.14 The communication manager 140 and / or receiving component 1402 depicted in FIG. 1 may receive an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node from the network node or controlling the UE, as described above.

[0129] like Fig.12 As further shown in FIG. 1 , in some aspects, process 1200 may include preparing a CSI report for one or more RISs and one or more sub-RISs based at least in part on an indication of a priority (block 1220). For example, a UE (e.g., using Fig.14The communication manager 140 and / or the preparing component 1408 depicted in FIG. 140 may prepare CSI reports for one or more RISs and one or more sub-RISs based at least in part on the indication of the priority, as described above.

[0130] like Fig.12 As further shown, in some aspects, process 1200 may include sending a CSI report to a network node (block 1230). For example, a UE (e.g., using Fig.14 The communication manager 140 and / or sending component 1404 depicted in FIG. 1404 may send a CSI report to a network node as described above.

[0131] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0132] In a first aspect, process 1200 includes multiplexing CSI associated with one or more of: a particular RIS of one or more RISs or a particular sub-RIS of one or more sub-RISs based at least in part on an indication of priority.

[0133] In a second aspect, alone or in combination with the first aspect, process 1200 includes discarding CSI associated with one or more of: a particular RIS in the one or more RISs or a particular sub-RIS in the one or more sub-RISs based at least in part on the indication of the priority.

[0134] In a third aspect, alone or in combination with one or more of the first aspect and the second aspect, process 1200 includes: receiving, from the network node, an indication of different priority levels for each CSI report or each CSI resource, wherein the indication of different priority levels defines: a first level associated with a non-periodic CSI report, a semi-persistent CSI report, or a periodic CSI report; a second level associated with a beam management CSI report or a CQI CSI report; a third level associated with a CSI report for each component carrier; a fourth level associated with a CSI report for each report identifier; a fifth level associated with a CSI report for each RIS identifier; and a sixth level associated with a CSI report for each sub-RIS identifier, wherein the CSI report is sent based at least in part on the indication of the different priority levels.

[0135] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 1200 includes: receiving one or more reference signals for training the one or more RISs from the network node during a training procedure; and receiving one or more reference signals for training the one or more sub-RISs in the one or more RISs from the network node during the training procedure, wherein the CSI report is prepared at least in part based on CSI associated with the one or more reference signals for training the one or more RISs and the one or more reference signals for training the one or more sub-RISs.

[0136] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the CSI report is associated with a RIS in the one or more RISs, and the CSI report indicates an average CSI across sub-RISs of the RIS, or the CSI report indicates the CSI of each RIS.

[0137] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the CSI report indicates one of: the best beam from each of the one or more sub-RISs and the best beam for each of the one or more RISs; the worst beam from each of the one or more sub-RISs and the worst beam for each of the one or more RISs; the best common phase vector used between sub-RISs within a RIS in the one or more RISs or between RISs in the one or more RISs; or the best sub-RIS from each of the one or more RISs and the best common phase vector of sub-RISs across the one or more RISs.

[0138] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the CSI report is associated with a CSI report priority, and the CSI report priority is based at least in part on the priority of each of the one or more RISs and the priority of each of the one or more sub-RISs.

[0139] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the process 1200 includes: bundling CSI starting with the highest priority RIS CSI; and discarding lower priority of each sub-RIS CSI.

[0140] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 1200 includes: bundling CSI starting with the highest priority sub-RIS CSI; combining sub-RIS CSIs across RISs; and discarding lower priorities of each RIS CSI.

[0141] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the CSI report is a first CSI report associated with a RIS in the one or more RISs, wherein the first CSI report conflicts with a second CSI report associated with the RIS, and process 1200 includes: multiplexing or discarding one of the first CSI report or the second CSI report based at least in part on the indication of the priority.

[0142] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the CSI is a first CSI report associated with a RIS in the one or more RISs, wherein a second CSI report is associated with a direct link between the UE and the network node, or the second CSI report is associated with a sidelink interface of the UE, and process 1200 includes: multiplexing or discarding one of the first CSI report or the second CSI report based at least in part on the indication of the priority.

[0143] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, process 1200 includes: receiving from the network node an on-off pattern of the one or more sub-RISs across the one or more RISs in the one or more RISs, wherein the pattern is associated with training of the RIS.

[0144] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the pattern is defined for each RIS regardless of the served UE, and wherein the pattern is received from the network node via L1, L2 or L3 signaling.

[0145] although Fig.12 An example block diagram of process 1200 is shown, but in some aspects, process 1200 may include Fig.12 The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 1200 may be performed in parallel.

[0146] Fig.13 is a diagram illustrating an example process 1300 performed, for example, by a network node according to the present disclosure. The example process 1300 is an example in which the network node (eg, network node 110) performs operations associated with sending CSI according to priorities of RIS.

[0147] like Fig.13As shown in FIG. 1 , in some aspects, process 1300 may include sending to a UE an indication of a priority of one or more RISs and one or more sub-RISs in one or more RISs between the UE and a network node (block 1310). For example, a network node (e.g., using Fig.15 The sending component 1504 depicted in FIG. 1504 may send to the UE an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node, as described above.

[0148] like Fig.13 As further shown in FIG. 1 , in some aspects, process 1300 may include receiving a CSI report for one or more RISs and one or more sub-RISs from a UE, wherein the CSI report is prepared based at least in part on an indication of a priority (block 1320). For example, a network node (e.g., using Fig.15 The receiving component 1502 depicted in can receive a CSI report for one or more RISs and one or more sub-RISs from a UE, wherein the CSI report is prepared based at least in part on an indication of a priority, as described above.

[0149] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0150] although Fig.13 An example block diagram of process 1300 is shown, but in some aspects, process 1300 may include Fig.13 The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 1300 may be performed in parallel.

[0151] Fig.14 1 is a diagram of an example apparatus 1400 for wireless communication according to the present disclosure. Apparatus 1400 may be a UE, or a UE may include apparatus 1400. In some aspects, apparatus 1400 includes a receiving component 1402 and a sending component 1404, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1400 may communicate with another apparatus 1406 (such as a UE, a base station, or another wireless communication device) using receiving component 1402 and sending component 1404. As further shown, apparatus 1400 may include a communication manager 140. Communication manager 140 may include a preparation component 1408, etc.

[0152] In some aspects, the apparatus 1400 may be configured to perform Figures 7 to 11Additionally or alternatively, the apparatus 1400 may be configured to perform one or more processes described herein, such as Fig.12 The process 1200. In some aspects, Fig.14 The apparatus 1400 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 Additionally or alternatively, Fig.14 One or more of the components shown in the figure may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as an instruction or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0153] The receiving component 1402 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the apparatus 1406. The receiving component 1402 may provide the received communications to one or more other components of the apparatus 1400. In some aspects, the receiving component 1402 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to the one or more other components of the apparatus 1400. In some aspects, the receiving component 1402 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0154] The transmitting component 1404 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the apparatus 1406. In some aspects, one or more other components of the apparatus 1400 may generate communications and may provide the generated communications to the transmitting component 1404 for transmission to the apparatus 1406. In some aspects, the transmitting component 1404 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the apparatus 1406. In some aspects, the transmitting component 1404 may include combining 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 1404 can be co-located with the receive component 1402 in a transceiver.

[0155] The receiving component 1402 may receive an indication of a priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node from the network node or the controlling UE. The preparing component 1408 may prepare a CSI report for the one or more RISs and one or more sub-RISs based at least in part on the indication of the priority. The sending component 1404 may send the CSI report to the network node.

[0156] The preparing component 1408 can multiplex CSI associated with one or more of the following based at least in part on the indication of priority: a specific RIS in the one or more RISs or a specific sub-RIS in the one or more sub-RISs. The preparing component 1408 can discard CSI associated with one or more of the following based at least in part on the indication of priority: a specific RIS in the one or more RISs or a specific sub-RIS in the one or more sub-RISs.

[0157] The receiving component 1402 may receive an indication of different priority levels for each CSI report or each CSI resource from a network node. The sending component 1404 may send the CSI report based at least in part on the indication of the different priority levels. The receiving component 1402 may receive one or more reference signals for training one or more RISs from the network node during a training procedure. The receiving component 1402 may receive one or more reference signals for training one or more sub-RISs in one or more RISs from the network node during a training procedure. The preparing component 1408 may prepare a CSI report based at least in part on CSI associated with one or more reference signals for training one or more RISs and one or more reference signals for training one or more sub-RISs.

[0158] The preparation component 1408 can bundle CSI starting with the highest priority RIS CSI. The preparation component 1408 can discard lower priorities of each sub-RIS CSI. The preparation component 1408 can bundle CSI starting with the highest priority sub-RIS CSI. The preparation component 1408 can combine sub-RIS CSI across RIS. The preparation component 1408 can discard lower priorities of each RIS CSI. The receiving component 1402 can receive, from a network node, an on-off pattern of one or more sub-RISs across RISs in one or more RISs, wherein the pattern is associated with training of the RIS.

[0159] Fig.14 The number and arrangement of components shown in the diagram are provided as examples. In practice, there may be Fig.14 Additional components, fewer components, different components, or components arranged in a different manner than those shown in FIG. Fig.14Two or more components shown in may be implemented in a single component, or Fig.14 The single component shown in can be implemented as multiple distributed components. Additionally or alternatively, Fig.14 The collection of (one or more) components shown in can perform the operations described by Fig.14 Another collection of components shown in the figure performs one or more functions.

[0160] Fig.15 1 is a diagram of an example apparatus 1500 for wireless communication according to the present disclosure. Apparatus 1500 may be a network node, or a network node may include apparatus 1500. In some aspects, apparatus 1500 includes a receiving component 1502 and a sending component 1504, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1500 may communicate with another apparatus 1506 (such as a UE, a base station, or another wireless communication device) using receiving component 1502 and sending component 1504.

[0161] In some aspects, the apparatus 1500 may be configured to perform Figures 7 to 11 Additionally or alternatively, the apparatus 1500 may be configured to perform one or more processes described herein, such as Fig.13 The process 1300. In some aspects, Fig.15 The apparatus 1500 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 Additionally or alternatively, Fig.15 One or more of the components shown in the figure may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as an instruction or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0162] Receiving component 1502 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from apparatus 1506. Receiving component 1502 may provide the received communications to one or more other components of apparatus 1500. In some aspects, receiving component 1502 may perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to the one or more other components of apparatus 1500. In some aspects, receiving component 1502 may include combining Figure 2One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof, of the described network nodes.

[0163] Transmit component 1504 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1506. In some aspects, one or more other components of device 1500 may generate communications and may provide the generated communications to transmit component 1504 for transmission to device 1506. In some aspects, transmit component 1504 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1506. In some aspects, transmit component 1504 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 network nodes. In some aspects, the transmit component 1504 can be co-located with the receive component 1502 in a transceiver.

[0164] The sending component 1504 can send an indication of the priority of one or more RISs and one or more sub-RISs in the one or more RISs between the UE and the network node to the UE. The receiving component 1502 can receive a CSI report for the one or more RISs and one or more sub-RISs from the UE, wherein the CSI report is prepared based at least in part on the indication of the priority.

[0165] Fig.15 The number and arrangement of components shown in the diagram are provided as examples. In practice, there may be Fig.15 Additional components, fewer components, different components, or components arranged in a different manner than those shown in FIG. Fig.15 Two or more components shown in may be implemented in a single component, or Fig.15 The single component shown in can be implemented as multiple distributed components. Additionally or alternatively, Fig.15 The collection of (one or more) components shown in can perform the operations described by Fig.15 Another collection of components shown in the figure performs one or more functions.

[0166] The following provides an overview of some aspects of the disclosure:

[0167] Aspect 1: A method of wireless communication performed by a user equipment (UE), the method comprising: receiving an indication of the priority of one or more reconfigurable smart surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs from a network node or a controlling UE; preparing a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; and sending the CSI report to the network node.

[0168] Aspect 2: A method according to aspect 1, wherein preparing the CSI report includes: multiplexing CSI associated with one or more of the following items based at least in part on the indication of the priority: a specific RIS among the one or more RISs or a specific sub-RIS among the one or more sub-RISs.

[0169] Aspect 3: A method according to any one of Aspects 1 to 2, wherein preparing the CSI report includes: discarding CSI associated with one or more of the following items based at least in part on the indication of the priority: a specific RIS among the one or more RISs or a specific sub-RIS among the one or more sub-RISs.

[0170] Aspect 4: According to the method described in any one of Aspects 1 to 3, the method further includes: receiving indications of different priority levels for each CSI report or each CSI resource from the network node, wherein the indications of different priority levels define: a first level associated with a non-periodic CSI report, a semi-persistent CSI report, or a periodic CSI report; a second level associated with a beam management CSI report or a channel quality indicator CSI report; a third level associated with a CSI report for each component carrier; a fourth level associated with a CSI report for each report identifier; a fifth level associated with a CSI report for each RIS identifier; and a sixth level associated with a CSI report for each sub-RIS identifier, wherein the CSI report is sent based at least in part on the indications of different priority levels.

[0171] Aspect 5: According to the method described in any one of Aspects 1 to 4, the method further includes: receiving one or more reference signals for training the one or more RISs from the network node during a training procedure; and receiving one or more reference signals for training the one or more sub-RISs in the one or more RISs from the network node during the training procedure, wherein the CSI report is prepared at least in part based on the CSI associated with the one or more reference signals for training the one or more RISs and the one or more reference signals for training the one or more sub-RISs.

[0172] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the CSI report is associated with a RIS in the one or more RISs, and wherein the CSI report indicates an average CSI across sub-RISs of the RIS, or the CSI report indicates the CSI of each RIS.

[0173] Aspect 7: A method according to any one of Aspects 1 to 6, wherein the CSI report indicates one of the following: the best beam from each of the one or more sub-RISs and the best beam for each of the one or more RISs; the worst beam from each of the one or more sub-RISs and the worst beam for each of the one or more RISs; the best common phase vector used between sub-RISs within a RIS in the one or more RISs or between RISs in the one or more RISs; or the best sub-RIS from each of the one or more RISs and the best common phase vector of sub-RISs across the one or more RISs.

[0174] Aspect 8: A method according to any one of Aspects 1 to 7, wherein the CSI report is associated with a CSI report priority, and wherein the CSI report priority is at least partially based on the priority of each RIS in the one or more RISs and the priority of each sub-RIS in the one or more sub-RISs.

[0175] Aspect 9: The method according to any one of aspects 1 to 8, wherein preparing the CSI report comprises: bundling CSI starting with the highest priority RIS CSI; and discarding the lower priority of each sub-RIS CSI.

[0176] Aspect 10: The method according to any one of aspects 1 to 9, wherein preparing the CSI report comprises: bundling CSI starting with the highest priority sub-RIS CSI; combining sub-RIS CSI across RIS; and discarding lower priority of each RIS CSI.

[0177] Aspect 11: A method according to any one of Aspects 1 to 10, wherein the CSI report is a first CSI report associated with a RIS in the one or more RISs, wherein the first CSI report conflicts with a second CSI report associated with the RIS, and wherein preparing the CSI report includes: multiplexing or discarding one of the first CSI report or the second CSI report based at least in part on the indication of the priority.

[0178] Aspect 12: A method according to any one of Aspects 1 to 11, wherein the CSI is a first CSI report associated with a RIS in the one or more RISs, wherein a second CSI report is associated with a direct link between the UE and the network node, or the second CSI report is associated with a sidelink interface of the UE, and wherein preparing the CSI report includes: multiplexing or discarding one of the first CSI report or the second CSI report based at least in part on the indication of the priority.

[0179] Aspect 13: According to the method described in any one of Aspects 1 to 12, the method further comprises: receiving an on-off pattern of the one or more sub-RISs across the RIS in the one or more RISs from the network node, wherein the pattern is associated with the training of the RIS.

[0180] Aspect 14: The method according to aspect 13, wherein the pattern is defined for each RIS regardless of the served UE, and wherein the pattern is received from the network node via layer 1, layer 2 or layer 3 signaling.

[0181] Aspect 15: A method of wireless communication performed by a network node, the method comprising: sending an indication of the priority of one or more reconfigurable smart surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs to a user equipment (UE); and receiving a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs from the UE, wherein the CSI report is prepared at least in part based on the indication of the priority.

[0182] Aspect 16: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 14.

[0183] Aspect 17: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 14.

[0184] Aspect 18: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 14.

[0185] Aspect 19: 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 to 14.

[0186] Aspect 20: 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 one or more of the methods described in aspects 1 to 14.

[0187] Aspect 21: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to Aspect 14.

[0188] Aspect 22: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to perform the method according to aspect 14.

[0189] Aspect 23: An apparatus for wireless communication, the apparatus comprising: at least one component for performing the method according to aspect 14.

[0190] Aspect 24: 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 aspect 14.

[0191] Aspect 25: 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 the method according to aspect 14.

[0192] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0193] 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, procedures and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, there is no reference to a specific software code herein to describe the operation and behavior of the system and / or method, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0194] As used herein, "satisfying a threshold" may mean a value is 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.

[0195] Although the specific combination of features is set forth 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 described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, 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).

[0196] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly described as such. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one project is intended to be referred to, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "having" A elements can also have B). In addition, the phrase "based on" is intended to represent "based at least in part", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and may be used interchangeably with "and / or" unless explicitly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A user equipment (UE), the user equipment (UE) comprising: Memory; and one or more processors coupled to the memory and configured to: receiving, from a network node or a controlling UE, an indication of a priority of one or more reconfigurable intelligent surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs; preparing a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; as well as The CSI report is sent to the network node.

2. The UE of claim 1 , wherein to prepare the CSI report, the one or more processors are configured to: CSI associated with one or more of: a particular RIS of the one or more RISs or a particular sub-RIS of the one or more sub-RISs is multiplexed based at least in part on the indication of the priority.

3. The UE of claim 1 , wherein to prepare the CSI report, the one or more processors are configured to: CSI associated with one or more of: a particular RIS of the one or more RISs or a particular sub-RIS of the one or more sub-RISs is discarded based at least in part on the indication of the priority.

4. The UE of claim 1, wherein the one or more processors are further configured to: receiving, from the network node, an indication of different priority levels for each CSI report or each CSI resource, wherein the indication of different priority levels defines: a first level associated with aperiodic CSI reporting, semi-persistent CSI reporting, or periodic CSI reporting; a second level associated with a beam management CSI report or a channel quality indicator CSI report; a third level associated with a CSI report for each component carrier; a fourth level associated with a CSI report per reporting identifier; a fifth level associated with a CSI report for each RIS identifier; and a sixth level, the sixth level being associated with a CSI report for each sub-RIS identifier, The CSI report is sent based at least in part on the indication of different priority levels.

5. The UE of claim 1, wherein the one or more processors are further configured to: receiving one or more reference signals for training the one or more RISs from the network node during a training procedure; and receiving, from the network node during the training procedure, one or more reference signals for training the one or more sub-RISs in the one or more RISs, Wherein the CSI report is prepared based at least in part on CSI associated with the one or more reference signals used for training the one or more RISs and the one or more reference signals used for training the one or more sub-RISs.

6. The UE of claim 1, wherein the CSI report is associated with a RIS among the one or more RISs, and wherein the CSI report indicates an average CSI across sub-RISs of the RIS, or the CSI report indicates CSI for each RIS.

7. The UE of claim 1 , wherein the CSI report indicates one of: a best beam from each of the one or more sub-RISs and a best beam for each of the one or more RISs; a worst beam from each of the one or more sub-RISs and a worst beam for each of the one or more RISs; the best common phase vector used between sub-RISs within a RIS in the one or more RISs or between RISs in the one or more RISs; or A best sub-RIS from each of the one or more RISs and a best common vector across the sub-RISs of the one or more RISs.

8. The UE of claim 1 , wherein the CSI report is associated with a CSI report priority, and wherein the CSI report priority is based at least in part on the priority of each of the one or more RISs and the priority of each of the one or more sub-RISs.

9. The UE of claim 1 , wherein to prepare the CSI report, the one or more processors are configured to: Bundle the CSIs starting with the highest priority RIS CSI; and The lower priority of each sub-RIS CSI is discarded.

10. The UE of claim 1 , wherein to prepare the CSI report, the one or more processors are configured to: Bundle the CSIs starting with the highest priority sub-RIS CSI; Cross-RIS Combinator Sub-RIS CSI; and The lower priority of each RIS CSI is discarded.

11. The UE of claim 1 , wherein the CSI report is a first CSI report associated with a RIS of the one or more RISs, wherein the first CSI report conflicts with a second CSI report associated with the RIS, and wherein to prepare the CSI report, the one or more processors are configured to: One of the first CSI report or the second CSI report is multiplexed or dropped based at least in part on the indication of the priority.

12. The UE of claim 1 , wherein the CSI is a first CSI report associated with a RIS of the one or more RISs, wherein a second CSI report is associated with a direct link between the UE and the network node, or the second CSI report is associated with a sidelink interface of the UE, and wherein to prepare the CSI report, the one or more processors are configured to: One of the first CSI report or the second CSI report is multiplexed or dropped based at least in part on the indication of the priority.

13. The UE of claim 1, wherein the one or more processors are further configured to: An on-off pattern of the one or more sub-RISs across a RIS of the one or more RISs is received from the network node, wherein the pattern is associated with training of the RIS.

14. The UE of claim 13, wherein the pattern is defined for each RIS regardless of the served UE, and wherein the pattern is received from the network node via layer 1, layer 2 or layer 3 signaling.

15. A network node, comprising: Memory; and one or more processors coupled to the memory and configured to: sending, to a user equipment (UE), an indication of a priority of one or more reconfigurable intelligent surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs; as well as A channel state information (CSI) report is received from the UE for the one or more RISs and the one or more sub-RISs, wherein the CSI report is prepared based at least in part on the indication of the priority.

16. A method of wireless communication performed by a user equipment (UE), the method comprising: receiving, from a network node or a controlling UE, an indication of a priority of one or more reconfigurable intelligent surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs; preparing a channel state information (CSI) report for the one or more RISs and the one or more sub-RISs based at least in part on the indication of the priority; as well as The CSI report is sent to the network node.

17. The method of claim 16, wherein preparing the CSI report comprises: CSI associated with one or more of: a particular RIS of the one or more RISs or a particular sub-RIS of the one or more sub-RISs is multiplexed based at least in part on the indication of the priority.

18. The method of claim 16, wherein preparing the CSI report comprises: CSI associated with one or more of: a particular RIS of the one or more RISs or a particular sub-RIS of the one or more sub-RISs is discarded based at least in part on the indication of the priority.

19. The method according to claim 16, further comprising: receiving, from the network node, an indication of different priority levels for each CSI report or each CSI resource, wherein the indication of different priority levels defines: a first level associated with aperiodic CSI reporting, semi-persistent CSI reporting, or periodic CSI reporting; a second level associated with a beam management CSI report or a channel quality indicator CSI report; a third level associated with a CSI report for each component carrier; a fourth level associated with a CSI report per reporting identifier; a fifth level associated with a CSI report for each RIS identifier; and a sixth level, the sixth level being associated with a CSI report for each sub-RIS identifier, The CSI report is sent based at least in part on the indication of different priority levels.

20. The method according to claim 16, further comprising: receiving one or more reference signals for training the one or more RISs from the network node during a training procedure; as well as receiving, from the network node during the training procedure, one or more reference signals for training the one or more sub-RISs in the one or more RISs, Wherein the CSI report is prepared based at least in part on CSI associated with the one or more reference signals used for training the one or more RISs and the one or more reference signals used for training the one or more sub-RISs.

21. The method of claim 16, wherein the CSI report is associated with a RIS of the one or more RISs, and wherein the CSI report indicates an average CSI across sub-RISs of the RIS, or the CSI report indicates CSI for each RIS.

22. The method of claim 16, wherein the CSI report indicates one of: a best beam from each of the one or more sub-RISs and a best beam for each of the one or more RISs; a worst beam from each of the one or more sub-RISs and a worst beam for each of the one or more RISs; the best common phase vector used between sub-RISs within a RIS in the one or more RISs or between RISs in the one or more RISs; or A best sub-RIS from each of the one or more RISs and a best common vector across the sub-RISs of the one or more RISs.

23. The method of claim 16, wherein the CSI report is associated with a CSI report priority, and wherein the CSI report priority is based at least in part on the priority of each of the one or more RISs and the priority of each of the one or more sub-RISs.

24. The method of claim 16, wherein preparing the CSI report comprises: Bundle the CSIs starting with the highest priority RIS CSI; as well as The lower priority of each sub-RIS CSI is discarded.

25. The method of claim 16, wherein preparing the CSI report comprises: Bundle the CSIs starting with the highest priority sub-RIS CSI; Cross-RIS combination sub-RIS CSI; as well as The lower priority of each RIS CSI is discarded.

26. The method of claim 16, wherein the CSI report is a first CSI report associated with a RIS of the one or more RISs, wherein the first CSI report conflicts with a second CSI report associated with the RIS, and wherein preparing the CSI report comprises: One of the first CSI report or the second CSI report is multiplexed or dropped based at least in part on the indication of the priority.

27. The method of claim 16, wherein the CSI is a first CSI report associated with a RIS of the one or more RISs, wherein a second CSI report is associated with a direct link between the UE and the network node, or the second CSI report is associated with a sidelink interface of the UE, and wherein preparing the CSI report comprises: One of the first CSI report or the second CSI report is multiplexed or dropped based at least in part on the indication of the priority.

28. The method of claim 16, further comprising: An on-off pattern of the one or more sub-RISs across a RIS of the one or more RISs is received from the network node, wherein the pattern is associated with training of the RIS.

29. The method of claim 28, wherein the pattern is defined for each RIS regardless of the served UE, and wherein the pattern is received from the network node via layer 1, layer 2 or layer 3 signaling.

30. A method of wireless communication performed by a network node, the method comprising: sending, to a user equipment (UE), an indication of a priority of one or more reconfigurable intelligent surfaces (RIS) between the UE and the network node and one or more sub-RISs in the one or more RISs; as well as A channel state information (CSI) report is received from the UE for the one or more RISs and the one or more sub-RISs, wherein the CSI report is prepared based at least in part on the indication of the priority.

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