Reference signal timing offset reporting for multiple transmit-receive point coherent joint transmit channel state information feedback

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive configuration information associated with sending an inter-configuration indication (TCI) downlink timing offset reporting operation. The UE may receive a first reference signal associated with the first TCI state. The UE may receive a second reference signal associated with a second TCI state. The UE may transmit inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information. Numerous other aspects are described.

Description

Technical Field

[0001] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for coherently jointly transmitting reference signal timing offset reports for channel state information feedback by multiple transmission and reception points. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting 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 communication for wireless communication devices, such as user equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink and uplink communications. A "downlink" (or "DL") refers to the communication link from the network node to the UE, and an "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, 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, national, regional, 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 better integrating with other open standards by using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink and 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; as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies remain valuable. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] In order that the above-mentioned features of the present disclosure may be fully understood, a more particular description of the invention briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are not therefore to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0006] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0007] 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.

[0008] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0009] Figure 4 is a diagram illustrating an example of multiple transmission reception point (mTRP) communication according to the present disclosure.

[0010] Figure 5 is a diagram illustrating an example associated with reference signal timing offset reporting for mTRP coherent joint transmission (CJT) channel state information (CSI) feedback according to the present disclosure.

[0011] Figure 6 is a diagram illustrating an example associated with reference signal timing offset reporting for mTRP CJT CSI feedback according to the present disclosure.

[0012] Figure 7 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0013] Figure 8 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0014] Figure 9 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0015] Figure 10 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0016] Figure 11 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0017] Figure 12is a diagram of an example apparatus for wireless communications according to the present disclosure. Summary of the Invention

[0018] Some aspects described herein relate to a user equipment (UE) for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive configuration information associated with sending an inter-configuration indication (inter-TCI) downlink timing offset report operation. The one or more processors may be configured to receive a first reference signal associated with a first TCI state. The one or more processors may be configured to receive a second reference signal associated with a second TCI state. The one or more processors may be configured to send inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0019] Some aspects described herein relate to a network node for wireless communication. The network node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send configuration information associated with an inter-TCI downlink timing offset reporting operation. The one or more processors may be configured to send a first reference signal associated with a first TCI state. The one or more processors may be configured to send a second reference signal associated with a second TCI state. The one or more processors may be configured to receive, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state.

[0020] Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive configuration information associated with a multi-transmit-receive point (mTRP) coherent joint transmission (CJT) channel state information (CSI) reporting operation, the configuration information indicating an inter-CSI-RS (inter-CMR) downlink timing offset reporting operation for CSI measurement. The one or more processors may be configured to receive a first CMR associated with a first transmit-receive point (TRP). The one or more processors may be configured to receive a second CMR associated with a second TRP. The one or more processors may be configured to send CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0021] Some aspects described herein relate to a network node for wireless communication. The network node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send configuration information associated with an mTRPCJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. The one or more processors may be configured to send a first CMR associated with a first TRP. The one or more processors may be configured to send a second CMR associated with a second TRP. The one or more processors may be configured to receive CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0022] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include receiving configuration information associated with an inter-TCI downlink timing offset reporting operation. The method may include receiving a first reference signal associated with a first TCI state. The method may include receiving a second reference signal associated with a second TCI state. The method may include transmitting inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0023] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending configuration information associated with an inter-TCI downlink timing offset reporting operation. The method may include sending a first reference signal associated with a first TCI state. The method may include sending a second reference signal associated with a second TCI state. The method may include receiving, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state.

[0024] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include receiving configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. The method may include receiving a first CMR associated with a first TRP. The method may include receiving a second CMR associated with a second TRP. The method may include sending CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0025] Certain aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. The method may include sending a first CMR associated with a first TRP. The method may include sending a second CMR associated with a second TRP. The method may include receiving CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0026] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive configuration information associated with an inter-TCI downlink timing offset reporting operation. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive a first reference signal associated with a first TCI state. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive a second reference signal associated with a second TCI state. The instruction set, when executed by one or more processors of the UE, may cause the UE to send inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0027] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to transmit configuration information associated with an inter-TCI downlink timing offset reporting operation. The set of instructions, when executed by the one or more processors of the network node, may cause the network node to transmit a first reference signal associated with a first TCI state. The set of instructions, when executed by the one or more processors of the network node, may cause the network node to transmit a second reference signal associated with a second TCI state. The set of instructions, when executed by the one or more processors of the network node, may cause the network node to receive, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state.

[0028] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. When executed by one or more processors of the UE, the instruction set may cause the UE to receive configuration information associated with an mTRP CJT CSI reporting operation. The configuration information may indicate an inter-CMR downlink timing offset reporting operation. When executed by one or more processors of the UE, the instruction set may cause the UE to receive a first CMR associated with a first TRP and a second CMR associated with a second TRP. When executed by one or more processors of the UE, the instruction set may cause the UE to send CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0029] Certain aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. When executed by one or more processors of the network node, the instruction set may cause the network node to send configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. When executed by the one or more processors of the network node, the instruction set may cause the network node to send a first CMR associated with a first TRP. When executed by the one or more processors of the network node, the instruction set may cause the network node to send a second CMR associated with a second TRP. When executed by the one or more processors of the network node, the instruction set may cause the network node to receive CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0030] Certain aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving configuration information associated with an inter-TCI downlink timing offset reporting operation. The apparatus may include means for receiving a first reference signal associated with a first TCI state. The apparatus may include means for receiving a second reference signal associated with a second TCI state. The apparatus may include means for transmitting inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0031] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for transmitting configuration information associated with an inter-TCI downlink timing offset reporting operation. The apparatus may include means for transmitting a first reference signal associated with a first TCI state. The apparatus may include means for transmitting a second reference signal associated with a second TCI state. The apparatus may include means for receiving, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state.

[0032] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. The apparatus may include means for receiving a first CMR associated with a first TRP. The apparatus may include means for receiving a second CMR associated with a second TRP. The apparatus may include means for sending CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0033] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. The apparatus may include means for sending a first CMR associated with a first TRP. The apparatus may include means for sending a second CMR associated with a second TRP. The apparatus may include means for receiving CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0034] The various 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 accompanying drawings and description, and as illustrated in the accompanying drawings and description.

[0035] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes 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 limitations to the claims.

[0036] 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 incorporated into 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 compositions. DETAILED DESCRIPTION

[0037] In some cases, due to differences in the propagation paths of the signals received from the first transmit receive point (TRP) and the second TRP, the downlink timing of the signals may be misaligned. For example, the downlink timing misalignment may be caused by time synchronization errors between the TRPs and / or the propagation delay difference between the user equipment (UE) and the two TRPs. In some cases, due to independent clock drift in the first TRP and the second TRB and / or the movement of the UE, the downlink timing difference between the TRPs may vary over time, which may result in a time-varying propagation delay difference between the UE and the two TRPs. The downlink timing misalignment may result in inaccurate channel state information (CSI) reporting, especially in the case of multi-TRP (mTRP) coherent joint transmission (CJT) CSI reporting.

[0038] Some aspects of the techniques and apparatus described herein may facilitate reference signal timing offset reporting for mTRP CJT CSI feedback. For example, in some aspects, a network node may configure a UE to provide inter-TCI downlink timing offset information associated with a reference signal. The reference signal may include a synchronization signal block (SSB) and / or a tracking reference signal (TRS), and the inter-TCI downlink timing offset information may be used to facilitate compensation for timing associated with subsequent channel state information reference signals (CSI-RS) and / or other communications. For example, based on the reported inter-TCI downlink timing offset synchronization information, the network node may send a CSI-RS based on the inter-TCI downlink timing offset compensation. In some other aspects, the network node may configure the UE to report inter-CSI-RS (inter-CMR) downlink timing offset reporting information for CSI measurement. For example, the network node may send a CMR, and the UE may report the inter-CMR downlink timing offset information as part of the CSI report. Based on the inter-CMR downlink timing offset information, the network node may send communications via a physical downlink shared channel (PDSCH) and / or a physical downlink control channel (PDCCH) based on the inter-CMR downlink timing offset compensation. In this manner, some aspects may facilitate compensating for misalignments between downlink timing associated with multiple TRPs, thereby facilitating more efficient quantization and / or more reliable communication of CSI, and thereby positively impacting device and / or network performance.

[0039] 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 construed as limited to any specific structure or function presented throughout the present disclosure. Rather, these aspects are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of protection of the present disclosure to those skilled in the art. It will be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice method. Furthermore, the scope of the present disclosure is intended to cover such apparatus or methods implemented using other structures, functionality, or structure and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present claims.

[0040] The aspects and examples generally include methods, apparatus, network nodes, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as described or substantially described herein with reference to the figures and description and as illustrated in the figures and description.

[0041] The present disclosure can be easily used as a basis for modifying or designing other structures for carrying out 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 their organization and method of operation) and the associated advantages will be better understood from the following description when considered 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 limitations to the claims.

[0042] Although various aspects are described in the present disclosure by illustrating some examples, 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 incorporated into 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. Various aspects described herein can be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of different sizes, shapes and compositions.

[0043] 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, or algorithms (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0044] Although various aspects may be described herein using terminology generally associated with 5G or New Radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT, and / or post-5G (e.g., 6G) RATs.

[0045] Figure 11 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 (illustrated as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (illustrated 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, meaning 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). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning that the network node 110 is configured to utilize a protocol stack that is physically or 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)).

[0046] In some examples, network node 110 is or includes a network node (such as an RU) that communicates with UE 120 via a radio access link. In some examples, network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, network node 110 (such as a converged 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. 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, an RU, a CU, a mobility element of a network, a core network node, a network element, 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 using any suitable transport network via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks.

[0047] In some examples, 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 the coverage area of ​​network node 110 and / or a network node subsystem serving that coverage area, depending on the context in which the term is used. Network node 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and / or another type of cell. A macrocell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 120 with service subscriptions. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions. A femtocell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 associated with the femtocell (e.g., UEs 120 in a closed subscriber group (CSG)). A network node 110 for a macrocell may be referred to as a macro network node. A network node 110 for a picocell may be referred to as a pico 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 1 In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0048] In some aspects, the term "base station" or "network node" may refer to a converged 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 multiple 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.

[0049] 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 can relay transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110 d (e.g., a relay network node) may communicate with a network node 110 a (e.g., a macro network node) and a UE 120 d to facilitate communications between the network node 110 a and the UE 120 d. 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.

[0050] 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).

[0051] The network controller 130 may be coupled to or in communication with a set 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 backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0052] UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smartphone), 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 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, 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.

[0053] Some UEs 120 may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. The UE 120 may be included within a housing that houses components of the 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, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0054] 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. A RAT may be referred to as a radio technology, air interface, etc. A frequency may be referred to as a carrier, 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.

[0055] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 can 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 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0056] 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, devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations 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 "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0057] 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 frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus 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 operation 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.

[0058] With the above examples in mind, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a, FR4-1, and / or FR5, or may 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) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0059] In some aspects, a UE (e.g., UE 120) may include a communications manager 140. As described in greater detail elsewhere herein, the communications manager 140 may: receive configuration information associated with sending an inter-configuration indication (TCI) downlink timing offset reporting operation; receive a first reference signal associated with a first TCI state; receive a second reference signal associated with a second TCI state; and send inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0060] In some aspects, the communication manager 140 may: receive configuration information associated with a multiple transmit-receive point (mTRP) coherent joint transmit (CJT) channel state information (CSI) reporting operation, the configuration information indicating an inter-CSI-RS (inter-CMR) downlink timing offset reporting operation for CSI measurement; receive a first CMR associated with a first transmit-receive point (TRP); receive a second CMR associated with a second TRP; and send CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0061] 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 configuration information associated with an inter-TCI downlink timing offset reporting operation; send a first reference signal associated with a first TCI state; send a second reference signal associated with a second TCI state; and receive inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0062] In some aspects, the communication manager 150 may: transmit configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation; transmit a first CMR associated with a TRP; transmit a second CMR associated with a second TRP; and receive CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0063] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0064] Figure 22 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 through 234t, such as T antennas (T ≥ 1). The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1). The network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 232. 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 radio frequency components, such as one or more CUs or one or more DUs, that facilitate direct communication with the UE 120.

[0065] At network node 110, transmit processor 220 may receive data intended for UE 120 (or a set of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCS) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols for UE 120. 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., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, as 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 through 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 upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas) (shown as antennas 234a through 234t).

[0066] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use the demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols, if applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a 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, among other things, 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. In some examples, one or more components of the UE 120 may be included in a housing 284.

[0067] 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.

[0068] 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. The antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0069] Each of the antenna elements may include one or more sub-elements for radiating or receiving radio frequency signals. For example, a single antenna element may include a first sub-element that is cross-polarized with a second sub-element that can be used to independently transmit cross-polarized signals. The antenna elements may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between the antenna elements may be such that signals having desired wavelengths transmitted individually by the antenna elements can interact or interfere (e.g., to form a desired beam). For example, given a desired wavelength or frequency range, the spacing may provide a quarter wavelength, half a wavelength, or other fraction of a wavelength of the spacing between adjacent antenna elements to allow interaction or interference of signals transmitted by individual antenna elements within the desired range.

[0070] Antenna elements and / or subelements may be used to generate beams. A "beam" may refer to a wireless signal that is transmitted in a directional manner, such as in the direction of a receiving device. A beam may include a directional signal, a direction associated with the signal, a set of directional resources associated with the signal (e.g., angle of arrival, horizontal direction, vertical direction), and / or a set of parameters indicating one or more aspects of the directional signal, the direction associated with the signal, and / or the set of directional resources associated with the signal.

[0071] As indicated above, antenna elements and / or sub-elements can be used to generate beams. For example, antenna elements can be individually selected or deselected for transmission of a signal (or multiple signals) by controlling the amplitude of one or more corresponding amplifiers. Beamforming involves generating a beam using multiple signals on different antenna elements, where one or more or all of the multiple signals are shifted in phase relative to each other. The formed beam can carry physical or higher layer reference signals or information. When each of the multiple signals is radiated from the corresponding antenna element, the radiated signals interact with each other, interfere (constructively and destructively), and amplify to form the resulting beam. The shape (such as amplitude, width, and / or presence of side lobes) and direction (such as the angle of the beam relative to the surface of the antenna array) can be dynamically controlled by modifying the phase shift or phase offset of the multiple signals relative to each other.

[0072] Beamforming can be used for communication between a UE and a network node, such as for millimeter wave communication. In this case, the network node may provide the UE with a configuration of a transmit configuration indicator (TCI) state, which respectively indicates a beam that can be used by the UE, such as for receiving a physical downlink shared channel (PDSCH). The TCI state indicates the spatial parameters used for communication. For example, the TCI state used for communication may identify a source signal (such as a synchronization signal block, a channel state information reference signal, etc.) and the spatial parameters to be derived from the source signal for the purpose of sending or receiving communication. For example, the TCI state may indicate a quasi-co-location (QCL) type. The QCL type may indicate one or more spatial parameters to be derived from the source signal. The source signal may be referred to as a QCL source. The network node may indicate the activated TCI state to the UE, and the UE may use the activated TCI state to select a beam for receiving the PDSCH.

[0073] The beam indication may be or include a TCI state information element, a beam identifier (ID), spatial relationship information, a TCI state ID, a closed loop index, a panel ID, a TRP ID, and / or a sounding reference signal (SRS) set ID, etc. The TCI state information element (referred to herein as TCI state) may indicate information associated with a beam, such as a downlink beam. For example, the TCI state information element may indicate a TCI state identifier (e.g., tci-StateID), a QCL type (e.g., qcl-Type1, qcl-Type2, qcl-TypeA, qcl-TypeB, qcl-TypeC, qcl-TypeD, etc.), a cell identifier (e.g., ServCellIndex), a bandwidth part identifier (bwp-Id), a reference signal identifier (such as CSI-RS (e.g., NZP-CSI-RS-ResourceId, SSB-Index, etc.)), etc. The spatial relationship information may similarly indicate information associated with an uplink beam.

[0074] The beam indication can be a joint or individual downlink (DL) / uplink (UL) beam indication in a unified TCI framework. In some cases, the network can use at least UE-specific (unicast) downlink control information (DCI) to indicate a joint or individual DL / UL beam indication from an active TCI state, thereby supporting beam indication based on layer 1 (L1). In some cases, existing DCI formats 1_1 and / or 1_2 can be reused for beam indication. The network may include a support mechanism for the UE to confirm successful decoding of the beam indication. For example, the acknowledgement / negative acknowledgement (ACK / NACK) of the PDSCH scheduled by the DCI carrying the beam indication can also be used as an ACK for the DCI.

[0075] Beam indication may be provided for carrier aggregation (CA) scenarios. In a unified TCI framework, the network may support common TCI state ID updates and activations to provide common QCL information and / or one or more common UL transmit spatial filters across a set of configured component carriers (CCs). This type of beam indication may be applicable to intra-band CA as well as joint DL / UL beam indication and individual DL / UL beam indication. Common TCI state ID may mean that a reference signal (RS) determined according to the TCI state indicated by the common TCI state ID is used to provide QCL type D indication and determine the UL transmit spatial filter across a set of configured CCs.

[0076] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. 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, if 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 execute the instructions herein (eg, reference Figures 5 to 12 ) any aspects of any of the methods described.

[0077] At network node 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., a demodulator component (shown as DEMOD) of modem 232), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller / processor 240. Network node 110 may include a communication unit 244 and may communicate with network controller 130 via communication unit 244. Network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, modem 232 of network node 110 may include a modulator and a demodulator. In some examples, 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 execute the instructions herein (e.g., reference 242). Figures 5 to 12 ) any aspects of any of the methods described.

[0078] In some aspects, the controller / processor 280 may be a component of a processing system. A processing system may generally be a system or series of machines or components that receives input and processes the input to produce a set of outputs, which may be communicated to other systems or components, such as the UE 120. For example, the processing system of the UE 120 may be a system that includes various other components or subcomponents of the UE 120.

[0079] The processing system of UE 120 may interface with one or more other components of UE 120, may process information (such as input or signals) received from one or more other components, or may output information to one or more other components. For example, a chip or modem of UE 120 may include: a processing system, a first interface for receiving or obtaining information, and a second interface for outputting, sending, or providing information. In some examples, the first interface may be an interface between the processing system of the chip or modem and a receiver, allowing UE 120 to receive information or signal input and pass the information to the processing system. In some examples, the second interface may be an interface between the processing system of the chip or modem and a transmitter, allowing UE 120 to transmit information output from the chip or modem. One of ordinary skill in the art will readily recognize that the second interface may also obtain or receive information or signal input, and the first interface may also output, send, or provide information.

[0080] In some aspects, controller / processor 240 may be a component of a processing system. A processing system may generally be a system or series of machines or components that receives input and processes the input to produce a set of outputs that may be passed to other systems or components, such as network node 110. For example, the processing system of network node 110 may be a system that includes various other components or subcomponents of network node 110.

[0081] The processing system of network node 110 may interface with one or more other components of network node 110, process information (such as input or signals) received from one or more other components, or output information to one or more other components. For example, a chip or modem of network node 110 may include a processing system, a first interface for receiving or obtaining information, and a second interface for outputting, sending, or providing information. In some examples, the first interface may be an interface between the processing system of the chip or modem and a receiver, allowing network node 110 to receive information or signal input and pass information to the processing system. In some examples, the second interface may be an interface between the processing system of the chip or modem and a transmitter, allowing network node 110 to transmit information output from the chip or modem. Those skilled in the art will readily appreciate that the second interface may also obtain or receive information or signal input, and the first interface may also output, send, or provide information.

[0082] 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 controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with reference signal timing offset reporting for mTRP CJT CSI feedback, as described in more detail elsewhere herein. Figure 2 Any other component of the may perform or direct e.g. Figure 7 The process of 700 Figure 8 The process of 800 Figure 9 The process of 900 Figure 101000 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 (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of network node 110 and / or UE 120, may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 7 The process of 700 Figure 8 The process of 800 Figure 9 The process of 900 Figure 10 The operations of process 1000 and / or other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, among others.

[0083] In some aspects, a UE (e.g., UE 120) includes: means for receiving configuration information associated with an inter-TCI downlink timing offset reporting operation; means for receiving a first reference signal associated with a first TCI state; means for receiving a second reference signal associated with a second TCI state; and / or means for sending inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information. Means for the UE to perform the operations described herein may include, for example, one or more of the communications 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.

[0084] In some aspects, a UE (e.g., UE 120) includes: means for receiving configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation; means for receiving a first CMR associated with a first TRP; means for receiving a second CMR associated with a second TRP; and / or means for sending CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR. Means for the UE to perform the operations described herein may include, for example, one or more of the communications 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.

[0085] In some aspects, a network node (e.g., network node 110) includes: means for transmitting configuration information associated with an inter-TCI downlink timing offset reporting operation; means for transmitting a first reference signal associated with a first TCI state; means for transmitting a second reference signal associated with a second TCI state; and / or means for receiving inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information. Means for the network node to perform the operations described herein may include, for example, one or more of the following: 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.

[0086] In some aspects, a network node (e.g., network node 110) includes: means for sending configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation; means for sending a first CMR associated with a first TRP; means for sending a second CMR associated with a second TRP; and / or means for receiving CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR. Means for the network node to perform the operations described herein may include, for example, one or more of the following: 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.

[0087] Although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0088] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0089] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of the network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated architecture or a decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as an aggregated base station (also known 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).

[0090] A converged base station (e.g., a converged 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 may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually spread across one or more other network nodes. The DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may 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), among others.

[0091] Base station type operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated 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 scaling of the communication system by separating base station functionality into one or more units that can be deployed separately. A disaggregated 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. Each unit of the disaggregated base station may be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

[0092] Figure 3 FIG2 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 that 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, 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.

[0093] Each of the units (including the CU 310, DU 330, RU 340) and the near-RT RIC 325, the non-RT RIC 315, and the SMO framework 305 may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, 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 the transmission medium. In some examples, each of the units may include a wired interface configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, and a wireless interface that may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) configured to receive signals or transmit signals to one or more of the other units via a wireless transmission medium, or both.

[0094] 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, among others. Each control function may be implemented using an interface that is 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 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.

[0095] Each DU 330 may correspond to a logical unit that includes 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 medium access control (MAC) layer, and one or more higher physical (PHY) layers, at least in part according to a functional split (such as that defined by 3GPP). In some aspects, the one or more higher PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like. In some aspects, the DU 330 may also host one or more lower PHY layers, such as those implemented by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, or physical random access channel (PRACH) extraction and filtering. 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.

[0096] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions based on functional split (e.g., functional split defined by 3GPP) (such as lower layer functional split), such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering. In such an 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).

[0097] The SMO framework 305 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 305 can be configured to interact with a cloud computing platform (such as the 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 the O2 interface). Such virtualized network elements can include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some implementations, the SMO framework 305 can communicate with hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 311) via the 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.

[0098] The non-RT RIC 315 can 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 can be coupled to or in communication with the near-RT RIC 325 (e.g., via an A1 interface). The near-RT RIC 325 can be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources through data collection and actions via an interface (e.g., 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.

[0099] In some implementations, the non-RT RIC 315 can receive parameters or external enrichment information from an external server in order to generate an AI / ML model to be deployed in the near-RT RIC 325. Such information can be utilized by the near-RT RIC 325 and can be received from non-network data sources or from network functions 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 can be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 can monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or through the creation of RAN management policies (such as A1 interface policies).

[0100] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0101] A network node (e.g., network node 110) may send a number of beams to a UE (e.g., UE 120). A "beam" may refer to a directional transmission, such as a wireless signal sent in the direction of a receiving device. A beam may include a directional signal, a direction associated with the signal, a set of directional resources associated with the signal (e.g., angle of arrival, horizontal direction, vertical direction), and / or a set of parameters indicating one or more aspects of the directional signal, the direction associated with the signal, and / or the set of directional resources associated with the signal. For example, a network node may generate a beam using an antenna panel that generates beams that are spatially and / or phase-shifted with respect to each other. The network node and the UE may select a set of beams to be used for communication between the network node and the UE. For example, a set of beams sent from a network node to a UE may be referred to herein as a communication link, a downlink, etc. The communication link between the network node and the UE may propagate in a medium and / or over various geometric paths, which are collectively referred to herein as a channel between the network node and the UE.

[0102] In some aspects, a UE may select a beam set for communicating with a network node. For example, the UE may select the beam set based at least in part on a beam set associated with favorable characteristics, such as satisfactory received power and a satisfactory signal-to-interference-plus-noise ratio (SINR) value. The UE may generate a codeword indicating the beam set and parameters to be used for using a codebook based at least in part on performing channel estimation of a channel between the network node and the UE.

[0103] One such codebook is the Type II codebook specified in 5G / NR. A Type II codebook may generate codewords using a two-stage process: a first stage in which a beam set is selected for the wideband of the communication link (e.g., sometimes referred to herein as W1), and a second stage in which a linear combination is performed for the subband set using the beam set for each subband set. The codeword may be based at least in part on the linear combination and may indicate the beam set and / or corresponding amplitude, phase coefficients, etc. Thus, a UE may provide an indication of the channel state at the UE and may request a beam set to be used for the UE. A Type II codebook may provide a more accurate designation of the channel state than a Type I codebook, which may provide a predefined codeword-based method for designating the selected beam. Thus, a Type II codebook may be referred to as a high-resolution codebook compared to a Type I codebook. A Type II codebook may improve MU-MIMO performance on a communication link.

[0104] For one type of Type II codebook (e.g., the codebook specified in Release 15 of the 3GPP standard for 5G / NR), the precoder of the codebook is based at least in part on a linear combination of discrete Fourier transform (DFT) beams. The linear combination may define the precoder W as W = W1W2, where the spatial domain compression matrix in are L spatial domain basis vectors of dimension N1N2×1 (mapped to two polarizations, so 2L in total), P=2N1N2 indicates the number of dimensions (sometimes denoted as D), and the combination coefficient matrix W2 consists of K=2Lυ linear combination coefficients, where υ indicates the total number of layers. Each column in W2 indicates a linear combination of complex coefficients (i.e., amplitude and phase) for one layer, where the amplitude coefficient is given by Given, where l=0,…,v-1, and and are the broadband coefficient and the subband coefficient respectively. The phase coefficient is given by Given, where l=0,…,v-1, and c i It is one of the 8-phase shift keying (8PSK) constellation points or the quadrature phase shift keying (QPSK) constellation points.

[0105] The UE may use CSI feedback to report the above values ​​and / or other values ​​associated with channel estimation. CSI feedback for a type II codebook may include two parts: a first part (sometimes referred to as CSI part I) and a second part (sometimes referred to as CSI part II). In some cases, the first part may have a smaller payload than the second part and / or may have a fixed payload. For example, the first part may have a payload size of less than about 50 bits, while the second part may have a variable payload size that may depend on the first part. In some cases, the second part may have a payload size of approximately 100 bits to 600 bits, but other values ​​may be used.

[0106] In some cases, the first part may identify one or more of the following: a rank indicator (RI) (e.g., 1 bit indicating one layer v=1 or two layers υ=2 when the configured maximum rank is 2); wideband and subband differential CQI, whose total payload size may depend on the number of subbands (e.g., approximately 4+18×2=40 bits for 19 subbands); and / or a non-zero wideband amplitude coefficient Q for each layer. l In some cases, the second portion may identify one or more of: a wideband and / or subband precoding matrix indicator (PMI) including a spatial basis vector selection indication; wideband and subband amplitude coefficients; and / or subband phase coefficients; among other examples.

[0107] In some cases, Type IICSI feedback may use a compressed Type II precoder. This may reduce the overhead of Type IICSI feedback. A compressed precoder may exploit sparsity in the spatial and / or frequency domains. For example, an example of a compressed Type II precoder W is represented by Given, where the precoder matrix W has P = 2N1N2 rows (denoting the spatial domain and the number of ports) and N3 columns (where N3 is the frequency domain compression unit of resource blocks or reporting subbands). The W1 matrix described above is a spatial basis consisting of L beams per polarization group (thus a total of 2L beams). The matrix W indicates all required linear combination complex coefficients (amplitude and co-phase), which are called "CSI coefficients", similar to what was described above. f The matrix is ​​composed of the basis vectors used to perform compression in the frequency domain, W f =[f0f1…f M-1 ],in are M orthogonal DFT vectors of size N3×1 for each spatial basis i = 0, …, 2L−1. The above type IICSI feedback may be referred to in some cases as enhanced or modified type IICSI feedback (e.g., enhanced relative to approaches that do not use basis vectors in the spatial and frequency domains to compress the feedback size).

[0108] The CSI feedback for this enhanced type IICSI feedback may include a spatial domain basis vector selection similar to the approach described in connection with the type IICSI feedback configuration. The CSI feedback may also include a frequency domain (FD) basis subset selection (where M basis vectors out of a total of N3 basis vectors are selected). In some cases, a common FD basis vector may be used for all 2L spatial beams, which is referred to herein as alternative 1. In these cases, the M basis vectors are dynamically selected and reported. The value of M may be configured by the network or reported by the UE. In other cases, referred to herein as alternative 2, independent FD basis vectors may be used for each spatial domain basis vector, where there may be potentially different numbers and / or selections of FD basis vectors for each spatial domain basis vector. The total number of FD basis vectors across all 2L spatial beams may be configurable. <X

[0109] The enhanced type IICSI feedback may also include[[ID=X0000276]] the FD coefficients (e.g., amplitude and phase) in. For alternative 1 (common FD basis vector subset selection), the enhanced type IICSI feedback may report only a subset K0 < K = 2LM of the coefficients. For alternative 2 (independent basis subset selection), the enhanced type IICSI feedback may report amplitude and phase coefficients, where M i is the number of FD basis vectors associated with one spatial beam.

[0110] The UE may communicate with multiple TRPs using beams. A TRP is a network node configured to transmit and receive signals. For example, a TRP may include one or more components of a base station. In some cases, the UE may communicate with multiple TRPs (mTRPs) simultaneously (e.g., at the same time) according to an mTRP configuration. In mTRP downlink communication, the UE may receive multiple communications, each from a different TRP.

[0111] Figure 4 is a diagram illustrating example 400 of mTRP communication (sometimes referred to as multi-panel communication) according to the present disclosure. As Figure 4 shown, multiple TRPs 405 may communicate with the same UE 120. The network nodes may include multiple TRPs 405, or multiple TRPs 405 may be distributed across multiple network nodes.

[0112] Multiple TRPs 405 (shown as TRP A and TRP B) can communicate with the same UE 120 in a coordinated manner (e.g., using coordinated multipoint transmission) to improve reliability and / or increase throughput. The TRPs 405 can coordinate such communications via an interface between the TRPs 405 (e.g., a backhaul interface and / or an access node controller). When the TRPs 405 are co-located at the same network node (e.g., when the TRPs 405 are different antenna arrays or panels of the same network node), the interface can have lower latency and / or higher capacity, and when the TRPs 405 are located at different network nodes, the interface can have higher latency and / or lower capacity (compared to co-location). Different TRPs 405 can communicate with the UE 120 using different QCL relationships (e.g., different TCI states), different DMRS ports, and / or different layers (e.g., different layers in a multi-layer communication).

[0113] In a first multi-TRP transmission mode (e.g., Mode 1), a single physical downlink control channel (PDCCH) may be used to schedule downlink data communications for a single PDSCH. In this case, multiple TRPs 405 (e.g., TRP A and TRP B) may send communications to UE 120 on the same PDSCH. For example, communications may be sent using a single codeword with different spatial layers for different TRPs 405 (e.g., where one codeword is mapped to a first set of layers sent by a first TRP 405 and to a second set of layers sent by a second TRP 405). As another example, communications may be sent using multiple codewords, where different codewords are sent by different TRPs 405 (e.g., using different sets of layers). In either case, different TRPs 405 may use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers. For example, the first TRP 405 may use a first QCL relationship or a first TCI state for a first set of DMRS ports corresponding to a first layer set, and the second TRP 405 may use a second (different) QCL relationship or a second (different) TCI state for a second (different) set of DMRS ports corresponding to a second (different) layer set. In some aspects, the TCI state in the DCI (e.g., sent on the PDCCH, such as DCI format 1_0 or DCI format 1_1) may indicate a first QCL relationship (e.g., by indicating a first TCI state) and a second QCL relationship (e.g., by indicating a second TCI state). The first TCI state and the second TCI state may be indicated using a TCI field in the DCI. Generally speaking, in the multi-TRP transmission mode (e.g., mode 1), the TCI field may indicate a single TCI state (for single TRP transmission) or multiple TCI states (for multi-TRP transmission as discussed herein).

[0114] In a second multi-TRP transmission mode (e.g., mode 2), multiple PDCCHs may be used to schedule downlink data communications for multiple corresponding PDSCHs (e.g., one PDCCH per PDSCH). In this case, a first PDCCH may schedule a first codeword to be transmitted by the first TRP 405, and a second PDCCH may schedule a second codeword to be transmitted by the second TRP 405. In addition, a first DCI (e.g., transmitted by the first TRP 405) may schedule a first PDSCH communication associated with a first DMRS port set having a first QCL relationship (e.g., indicated by a first TCI state) for the first TRP 405, and a second DCI (e.g., transmitted by the second TRP 405) may schedule a second PDSCH communication associated with a second DMRS port set having a second QCL relationship (e.g., indicated by a second TCI state) for the second TRP 405. In this case, the DCI (e.g., having DCI format 1_0 or DCI format 1_1) may indicate a corresponding TCI state for the TRP 405 corresponding to the DCI. The TCI field of the DCI indicates a corresponding TCI state (eg, the TCI field of the first DCI indicates a first TCI state and the TCI field of the second DCI indicates a second TCI state).

[0115] Each communication in the mTRP configuration can be a spatial layer of a joint communication associated with the PDSCH. A joint communication is a communication that includes more than one signal sharing one or more time resources. Each TRP can be set at a different location than each other TRP, and therefore, each respective communication can be associated with one or more different respective spatial resources. Therefore, each respective communication can be a spatial layer of the joint communication. A spatial layer of the joint communication is a portion of the joint communication corresponding to a set of spatial resources. For example, the joint communication may include a first spatial layer corresponding to a first set of spatial resources and a second spatial layer corresponding to a second set of spatial resources.

[0116] To receive joint communications from multiple TRPs, a single wide beam corresponding to a single TCI state may be used. However, a single wide beam may result in the application of a single spatial filter applied to all layers of the joint communication, which may not be coherent (e.g., the layers of the joint communication may not have corresponding phases such that the layers may constructively combine at the receiving device). A spatial filter is a mechanism (e.g., a process, procedure, circuitry, and / or software, etc.) used to direct electromagnetic signals into a specific path. In some cases, a CJT configuration may be used for coherent joint communications to facilitate more efficient application of spatial filters, which may result in fewer lost signals and higher spectral efficiency.

[0117] The CJT configuration can be used for PDSCH communications, physical uplink control channel (PUCCH) communications, and / or physical uplink shared channel (PUSCH) communications. CJT is a joint transmission where each layer of the joint transmission is transmitted with a corresponding phase so that the layers can be constructively combined at the receiving device.

[0118] In some cases, the mTRP CJT codebook can be used for port selection in the mTRP CJT scenario. In some cases, the mTRP CJT codebook may come from the Release 16e Type IICSI codebook or the Release 17 Fe Type IICSI port selection codebook. One of the differences in the Fe Type II codebook compared to the e Type II codebook is the FD basis selection. In the e Type II codebook, when N3≤19, the FD basis is selected arbitrarily in the entire FD domain, and when N3>19, the FD basis is selected in a fairly large window on both sides of FD basis 0. In the Fe Type II codebook, regardless of the number of PMI subbands (N3), when M=2, the FD basis selection window is the basis {0,1} (when N=2) or {0,1,2,3} (when N=4). Therefore, FD basis 0 is always selected, and the other candidate bases are close to basis 0 (for example, each FD basis window starts from FD basis 0).

[0119] In some cases, the downlink timing of signals received from TRP A and TRP B may be misaligned due to differences in the propagation paths of the signals. For example, the downlink timing misalignment may be caused by inter-TRP time synchronization errors and / or propagation delay differences between UE 120 and the two TRPs. In some cases, the downlink timing difference between the TRPs may vary over time due to independent clock drift in TRP A and TRP B and / or movement of UE 120, which may result in a time-varying propagation delay difference between UE 120 and the two TRPs.

[0120] In some cases, with CJT precoding, UE 120 may observe a composite channel with a large delay spread on the PDSCH demodulation reference signal (DMRS). The resolvable delay span D for type-e IICSI feedback may be determined by the bandwidth of the precoding matrix indicator (PMI) subband. In addition, in the delay domain, taps larger than the resolvable delay span may be aliased. For example, in the case of R=2, where each channel quality indicator (CQI) subband has two PMI subbands, the resolvable delay span may be doubled. For N3 frequency domain (FD) bases, each FD basis represents one delay tap with a granularity of D / N3.

[0121] In some cases, using type e IICSI feedback, the precoding for all tones within a subband can be quantized to common coefficients. In the absence of aliasing, the quantized precoding coefficients for the tones within a subband can be a reasonable approximation. However, when aliasing is present, the expected precoding coefficients for the tones within the subband may show large variations. Therefore, without compensating for timing misalignment, quantizing the common coefficients for all tones within a subband may not provide reasonable precoding.

[0122] Some aspects of the techniques and apparatus described herein may facilitate reference signal timing offset reporting for mTRP CJT CSI feedback. For example, in some aspects, a network node may configure a UE to provide inter-TCI downlink timing offset information associated with a reference signal. The reference signal may include a synchronization signal block (SSB) and / or a tracking reference signal (TRS), and the inter-TCI downlink timing offset information may be used to facilitate compensation for timing associated with subsequent channel state information reference signals (CSI-RS) and / or other communications. For example, based on the reported inter-TCI downlink timing offset information, the network node may send a CSI-RS based on the inter-TCI downlink timing offset compensation. In some other aspects, the network node may configure the UE to report inter-CSI-RS (inter-CMR) downlink timing offset information for CSI measurement. For example, the network node may send a CMR, and the UE may report the inter-CMR downlink timing offset information as part of the CSI report. Based on the inter-CMR downlink timing offset information, the network node may send communications via a physical downlink shared channel (PDSCH) and / or a physical downlink control channel (PDCCH) based on the inter-CMR downlink timing offset compensation. In this manner, some aspects may facilitate compensating for misalignments between downlink timing associated with multiple TRPs, thereby facilitating more efficient quantization and / or more reliable communication of CSI, and thereby positively impacting device and / or network performance.

[0123] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0124] Figure 5 5 is a diagram illustrating an example 500 associated with reference signal timing offset reporting for mTRP CJT CSI feedback according to the present disclosure. Figure 5 As shown, UE 502 and network node 504 can communicate with each other. In some aspects, UE 502 can be, be similar to, or include Figures 1 to 4 The depicted UE 120, or included in the UE. In some aspects, the network node 504 can be, be similar to, or include Figure 1 、 Figure 2 and Figure 4 The depicted network node 110 and / or Figure 3 One or more components of the depicted decomposed base station architecture 300 may be or be included in the network node and / or the one or more components. The network node 504 may be or include multiple TRPs.

[0125] As indicated by reference numeral 506, the network node 504 may send and the UE 502 may receive configuration information. The configuration information may be associated with reporting CSI associated with multiple TRPs for mTRP CJT. In some aspects, the configuration information may be associated with an inter-TCI downlink timing offset reporting operation. The inter-TCI downlink timing offset reporting operation may be an operation performed by the UE 502 to report inter-TCI downlink timing offset information. The inter-TCI downlink timing offset information may indicate a downlink timing offset associated with at least one of a first TCI state or a second TCI state (or any number of other TCI states).

[0126] In some aspects, the inter-TCI downlink timing offset information associated with the first TCI state and / or the second TCI state may be based on a reference TCI state. For example, the inter-TCI downlink timing offset information may include a timing difference between a first timing associated with the first TCI state and a second timing associated with the second TCI state. The first timing and the second timing may each be determined based on the reference TCI state. In some aspects, for example, configuration information may indicate the reference TCI state. In some other aspects, the wireless communication standard may specify the reference TCI state. In some aspects, the reference TCI state may include an activated TCI state having a TCI state index among multiple activated TCI states that satisfies a reference TCI state condition (e.g., the lowest TCI state index among multiple TCI indices associated with the multiple activated TCI states). In some aspects, the reference TCI state may include an activated TCI state having an associated reference signal received power (RSRP) among multiple activated TCI states that satisfies the reference TCI state condition. For example, the reference TCI state may be the activated TCI state having the highest RSRP among multiple RSRPs associated with the multiple activated TCI states.

[0127] In some aspects, the configuration information may indicate a reporting periodicity associated with the inter-TCI downlink timing offset reporting operation. For example, the inter-TCI downlink timing offset information may be reported periodically, and the configuration information may indicate the reporting periodicity. For example, the configuration information may indicate the number of milliseconds between each report. In some aspects, the configuration information or a subsequent triggered communication may trigger aperiodic reporting of the inter-TCI downlink timing offset information. In some aspects, the configuration information may configure event-triggered reporting. For example, the configuration information may indicate a triggering event for triggering the inter-TCI downlink timing offset reporting operation. In some aspects, for example, the triggering event may be a determination that the inter-TCI downlink timing offset meets a reporting condition (e.g., the inter-TCI downlink timing offset exceeds a threshold).

[0128] As indicated by reference numeral 508, the network node 504 may transmit and the UE 502 may receive a first reference signal associated with a first TCI state, and as indicated by reference numeral 510, the network node 504 may transmit and the UE 502 may receive a second reference signal associated with a second TCI state. Reference signals may be associated with (e.g., transmitted by) multiple TRPs. In some aspects, the first reference signal may include a first periodic downlink reference signal, and the second reference signal may include a second periodic downlink reference signal. In some aspects, for example, the first reference signal and / or the second reference signal may be an SSB or a TRS. In some aspects, the network node 504 may transmit any number of additional reference signals.

[0129] As shown by reference numeral 512, in some aspects, the UE 502 may detect the occurrence of a triggering event. For example, as described above, the detection of the occurrence of the triggering event may include determining that the downlink timing offset meets the reporting condition (e.g., exceeds the reporting threshold). As shown by reference numeral 514, the UE 502 may send and the network node 504 may receive inter-TCI downlink timing offset information. The inter-TCI downlink timing offset information may be based on the configuration information and the first reference signal and the second reference signal. The inter-TCI downlink timing offset information may indicate a downlink timing offset associated with at least one of the first TCI state or the second TCI state. In some aspects, the downlink timing offset may include a timing difference measurement between a first timing associated with the first TCI state and a second timing associated with the second TCI state. In some aspects, the first timing and / or the second timing may be based on a reference timing associated with a reference TCI state.

[0130] In some aspects, the UE 502 may transmit the inter-TCI downlink timing offset information by transmitting a quantized downlink timing offset. For example, the quantized downlink timing offset may include at least one resolvable delay span associated with the enhanced type IICSI feedback. In some aspects, the quantized downlink timing offset may include at least one frequency-domain based delay unit associated with the enhanced type IICSI feedback.

[0131] As indicated by reference numeral 516, based on the inter-TCI downlink timing offset compensation, the network node 504 may transmit and the UE 502 may receive at least one CSI-RS. The inter-TCI downlink timing offset compensation may be based on the inter-TCI downlink timing offset information. For example, the inter-TCI downlink timing offset compensation may include a per-UE cyclic shift of time domain samples associated with the post-inverse Fast Fourier Transform (post-iFFT) processed signal. In some aspects, the inter-TCI downlink timing offset compensation may include a per-UE phase ramp of frequency domain samples associated with the pre-iFFT processed signal.

[0132] As indicated by reference numeral 518, the network node 504 may send and the UE 502 may receive communications based on the inter-TCI downlink timing offset compensation. The inter-TCI downlink timing offset compensation may be based on the inter-TCI downlink timing offset information, as described above in conjunction with the at least one CSI-RS. In some aspects, receiving the communication may include receiving the communication via at least one of a PDCCH or a PDSCH.

[0133] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0134] Figure 6 6 is a diagram illustrating an example 600 associated with reference signal timing offset reporting for mTRP CJT CSI feedback according to the present disclosure. Figure 6 As shown, UE 602 and network node 604 can communicate with each other. In some aspects, UE 602 can be, be similar to, or include Figure 5 UE 502 and / or Figures 1 to 4 In some aspects, the network node 604 may be, be similar to, or include the UE 120 depicted in FIG. Figure 5 The network node 504 depicted in Figure 1 、 Figure 2 and Figure 4 The network node 110 depicted in FIG. Figure 3The network node 604 may be or include one or more components of the decomposed base station architecture 300 depicted in FIG.

[0135] As indicated by reference numeral 606, the network node 604 may send and the UE 602 may receive configuration information. The configuration information may be associated with reporting CSI associated with multiple TRPs for mTRP CJT. In some aspects, the configuration information may be associated with an inter-CMR downlink timing offset reporting operation. The inter-CMR downlink timing offset reporting operation may be an operation performed by the UE 602 to report inter-CMR downlink timing offset information. The inter-CMR downlink timing offset information may indicate a downlink timing offset associated with at least one of the first CMR or the second CMR (or any number of other CMRs).

[0136] For example, the timing offset may include a timing difference measurement between a first timing associated with a first CMR and a second timing associated with a second CMR. In some aspects, the first timing and / or the second timing may be based on a reference timing associated with a reference CMR index. In some aspects, the configuration information may indicate the reference CMR index. For example, in some aspects, the configuration information may include an explicit indication of the reference CMR index. In some other aspects, the configuration information may indicate that the reference CMR index includes a CMR index from a plurality of CMR indexes that satisfies a CMR reference condition. For example, the reference CMR index may be a CMR index associated with the strongest spatial domain basis.

[0137] As shown at 608, the network node 604 may send and the UE 602 may receive a first CMR associated with the first TRP. As shown at 610, the network node 604 may send and the UE 602 may receive a second CMR associated with the second TRP. As shown at 612, based on the first and second CMRs, the UE 602 may send and the network node 604 may receive CSI feedback information. The UE 602 may send the CSI feedback information based on the configuration information.

[0138] In some aspects, for example, CSI feedback information may be included in a Type II CSI report. In some aspects, the CSI feedback information may indicate a reference CMR index. In some aspects, the reference CMR index may be a CMR index among multiple CMR indices that satisfies a reference CMR index condition. In some aspects, the CSI feedback information may include inter-CMR downlink timing offset information indicating a timing offset associated with at least one of a first CMR or a second CMR. In some aspects, the inter-CMR downlink timing offset information may indicate a downlink timing offset comprising a timing difference between a first timing associated with the first CMR and a second timing associated with the second CMR. In some aspects, the CSI feedback information may include a reporting bitmap indicating a timing offset reporting status for each of a plurality of CMRs including the first CMR and the second CMR. The timing offset reporting status may indicate whether inter-CMR downlink timing is reported for the indicated CMR. In some aspects, whether to report the inter-CMR downlink timing may be based on the presence of a non-zero CSI coefficient associated with the CMR. In some aspects, the CSI feedback information may include inter-CMR downlink timing offset information based on whether a reporting condition is satisfied. For example, in some aspects, the UE 602 may omit the inter-CMR timing downlink timing offset information when the measured timing offset is below a threshold.

[0139] In some aspects, the inter-CMR downlink timing offset information may be reported as a quantization of the timing offset. For example, in some aspects, the quantization of the timing offset may include at least one resolvable delay span associated with the enhanced type IICSI feedback. In some aspects, the quantization of the timing offset may include at least one frequency-domain basis delay unit associated with the enhanced type IICSI feedback.

[0140] As indicated by reference numeral 614, based on the inter-CMR downlink timing offset compensation, the network node 604 may send and the UE 602 may receive communications. In some aspects, the communications may be received via the PDCCH and / or the PDSCH. In some aspects, the inter-CMR downlink timing offset compensation may be based on the inter-CMR downlink timing offset information. For example, in some aspects, the inter-CMR downlink timing offset compensation may include a per-UE cyclic shift of frequency domain samples associated with the post-iFFT processed signal. In some other aspects, the inter-CMR downlink timing offset compensation may include a per-UE phase ramp of frequency domain samples associated with the pre-iFFT processed signal.

[0141] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0142] Figure 7is a diagram illustrating an example process 700, performed, for example, by a UE, in accordance with the present disclosure. Example process 700 is an example of operations in which a UE (eg, UE 120) performs operations associated with reference signal timing offset reporting for mTRP CJT CSI feedback.

[0143] like Figure 7 As shown, in some aspects, process 700 may include receiving configuration information associated with inter-TCI downlink timing offset reporting operations (block 710). For example, a UE (e.g., using Figure 11 The receiving component 1102 and / or the communication manager 1106 depicted in FIG may receive configuration information associated with the inter-TCI downlink timing offset reporting operation, as described above.

[0144] like Figure 7 As further shown, in some aspects, process 700 may include receiving a first reference signal associated with a first TCI state (block 720). For example, a UE (e.g., using Figure 11 The receiving component 1102 and / or the communication manager 1106 depicted in FIG may receive a first reference signal associated with a first TCI state, as described above.

[0145] like Figure 7 As further shown, in some aspects, process 700 may include receiving a second reference signal associated with a second TCI state (block 730). For example, a UE (e.g., using Figure 11 The receiving component 1102 and / or the communication manager 1106 depicted in FIG may receive a second reference signal associated with a second TCI state, as described above.

[0146] like Figure 7 As further shown, in some aspects, process 700 may include sending inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information (block 740). Figure 11 The sending component 1104 and / or the communication manager 1106 depicted in the figure may send inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information, as described above.

[0147] Process 700 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.

[0148] In a first aspect, the first reference signal comprises a first periodic downlink reference signal and the second reference signal comprises a second periodic downlink reference signal. In a second aspect, either alone or in combination with the first aspect, at least one of the first reference signal or the second reference signal comprises at least one of a synchronization signal block or a tracking reference signal. In a third aspect, either alone or in combination with one or more of the first and second aspects, process 700 comprises receiving at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal.

[0149] In a fourth aspect, either alone or in combination with one or more of aspects 1 to 3, the downlink timing offset comprises a timing difference measurement between a first timing associated with a first TCI state and a second timing associated with a second TCI state. In a fifth aspect, either alone or in combination with one or more of aspects 1 to 4, the first timing is based on a reference timing associated with a reference TCI state. In a fifth aspect, either alone or in combination with one or more of aspects 1 to 4, the configuration information indicates a reference TCI state. In a seventh aspect, either alone or in combination with one or more of aspects 1 to 6, the reference TCI state comprises an activated TCI state having a TCI state index satisfying a reference TCI state condition from among multiple activated TCI states. In an eighth aspect, either alone or in combination with one or more of aspects 1 to 7, the reference TCI state comprises an activated TCI state having an associated RSRP satisfying a reference TCI state condition from among multiple activated TCI states.

[0150] In a ninth aspect, either alone or in combination with one or more of aspects 1 to 8, transmitting inter-TCI downlink timing offset information comprises transmitting a quantized downlink timing offset. In a tenth aspect, either alone or in combination with one or more of aspects 1 to 9, the quantized downlink timing offset comprises at least one resolvable delay span associated with enhanced type IICSI feedback. In an eleventh aspect, either alone or in combination with one or more of aspects 1 to 10, the quantized downlink timing offset comprises at least one frequency-domain basis delay unit associated with enhanced type IICSI feedback.

[0151] In the twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the configuration information indicates a reporting periodicity associated with the inter-TCI downlink timing offset reporting operation. In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the inter-TCI downlink timing offset reporting operation includes a non-periodic reporting operation. In the fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the configuration information indicates a triggering event for triggering the inter-TCI downlink timing offset reporting operation, and sending the inter-TCI downlink timing offset information includes sending the inter-TCI downlink timing offset information based on detection of the occurrence of the triggering event. In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the detection of the occurrence of the triggering event includes determining that the downlink timing offset satisfies a reporting condition.

[0152] In a sixteenth aspect, alone or in combination with one or more of aspects 1 to 15, process 700 comprises receiving at least one CSI-RS based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on inter-TCI downlink timing offset information. In a seventeenth aspect, alone or in combination with one or more of aspects 1 to 16, process 700 comprises receiving communications based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information. In an eighteenth aspect, alone or in combination with one or more of aspects 1 to 17, receiving communications comprises receiving communications via at least one of a PDCCH or a PDSCH.

[0153] In a nineteenth aspect, either alone or in combination with one or more of aspects 1 to 18, the inter-TCI downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the iFFT post-processed signal. In a twentieth aspect, either alone or in combination with one or more of aspects 1 to 19, the inter-TCI downlink timing offset compensation comprises a per-UE phase ramp of frequency domain samples associated with the iFFT pre-processed signal.

[0154] although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 may include Figure 7 7. In some embodiments, the process 700 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 700 may be executed in parallel.

[0155] Figure 8is a diagram illustrating an example process 800, for example, performed by a network node, in accordance with the present disclosure. Example process 800 is an example of operations in which a network node (eg, network node 110) performs operations associated with reference signal timing offset reporting for mTRP CJT CSI feedback.

[0156] like Figure 8 As shown, in some aspects, process 800 may include sending configuration information associated with inter-TCI downlink timing offset reporting operations (block 810). For example, a network node (e.g., using Figure 12 The sending component 1204 and / or the communication manager 1206 depicted in FIG may send configuration information associated with the inter-TCI downlink timing offset reporting operation, as described above.

[0157] like Figure 8 As further shown, in some aspects, process 800 may include sending a first reference signal associated with a first TCI state (block 820). For example, a network node (e.g., using Figure 12 The transmitting component 1204 and / or the communication manager 1206 depicted in FIG may transmit a first reference signal associated with a first TCI state, as described above.

[0158] like Figure 8 As further shown, in some aspects, process 800 may include sending a second reference signal associated with a second TCI state (block 830). For example, a network node (e.g., using Figure 12 The transmitting component 1204 and / or the communication manager 1206 depicted in FIG may transmit a second reference signal associated with a second TCI state, as described above.

[0159] like Figure 8 As further shown, in some aspects, process 800 may include receiving, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state (block 840). For example, a network node (e.g., using Figure 12 The receiving component 1202 and / or the communication manager 1206 depicted in the figure can receive inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information, as described above.

[0160] Process 800 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.

[0161] In a first aspect, the first reference signal comprises a first periodic downlink reference signal and the second reference signal comprises a second periodic downlink reference signal. In a second aspect, either alone or in combination with the first aspect, at least one of the first reference signal or the second reference signal comprises at least one of a synchronization signal block or a tracking reference signal. In a third aspect, either alone or in combination with one or more of the first and second aspects, process 800 comprises transmitting at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal.

[0162] In a fourth aspect, either alone or in combination with one or more of aspects 1 to 3, the downlink timing offset comprises a timing difference measurement between a first timing associated with a first TCI state and a second timing associated with a second TCI state. In a fifth aspect, either alone or in combination with one or more of aspects 1 to 4, the first timing is based on a reference timing associated with a reference TCI state. In a fifth aspect, either alone or in combination with one or more of aspects 1 to 4, the configuration information indicates a reference TCI state. In a seventh aspect, either alone or in combination with one or more of aspects 1 to 6, the reference TCI state comprises an activated TCI state, from among a plurality of activated TCI states, having a TCI state index that satisfies a reference TCI state condition.

[0163] In an eighth aspect, either alone or in combination with one or more of aspects 1 to 7, the reference TCI state comprises an activated TCI state having an associated RSRP that satisfies a reference TCI state condition among a plurality of activated TCI states. In a ninth aspect, either alone or in combination with one or more of aspects 1 to 8, receiving inter-TCI downlink timing offset information comprises receiving a quantized downlink timing offset. In a tenth aspect, either alone or in combination with one or more of aspects 1 to 9, the quantized downlink timing offset comprises at least one resolvable delay span associated with enhanced type IICSI feedback. In an eleventh aspect, either alone or in combination with one or more of aspects 1 to 10, the quantized downlink timing offset comprises at least one frequency-domain based delay unit associated with enhanced type IICSI feedback.

[0164] In the twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the configuration information indicates a reporting periodicity associated with the inter-TCI downlink timing offset reporting operation. In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the inter-TCI downlink timing offset reporting operation includes a non-periodic reporting operation. In the fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the configuration information indicates a triggering event for triggering the inter-TCI downlink timing offset reporting operation, and receiving the inter-TCI downlink timing offset information includes receiving the inter-TCI downlink timing offset information based on detection of the occurrence of the triggering event. In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the detection of the occurrence of the triggering event includes determining that the downlink timing offset satisfies a reporting condition.

[0165] In a sixteenth aspect, alone or in combination with one or more of aspects 1 to 15, process 800 comprises transmitting at least one CSI-RS based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on inter-TCI downlink timing offset information. In a seventeenth aspect, alone or in combination with one or more of aspects 1 to 16, process 800 comprises transmitting a communication based on the inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information. In an eighteenth aspect, alone or in combination with one or more of aspects 1 to 17, transmitting the communication comprises transmitting the communication via at least one of a PDCCH or a PDSCH.

[0166] In a nineteenth aspect, either alone or in combination with one or more of aspects 1 to 18, the inter-TCI downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the iFFT post-processed signal. In a twentieth aspect, either alone or in combination with one or more of aspects 1 to 19, the inter-TCI downlink timing offset compensation comprises a per-UE phase ramp of frequency domain samples associated with the iFFT pre-processed signal.

[0167] although Figure 8 Example blocks of process 800 are shown, but in some aspects, process 800 may include Figure 8 800. In some embodiments, the process 800 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 800 may be executed in parallel.

[0168] Figure 9is a diagram illustrating an example process 900, performed, for example, by a UE, in accordance with the present disclosure. Example process 900 is an example in which a UE (eg, UE 120) performs operations associated with reference signal timing offset reporting for mTRP CJT CSI feedback.

[0169] like Figure 9 As shown, in some aspects, process 900 may include receiving configuration information associated with mTRP CJT CSI reporting operation, the configuration information indicating inter-CMR downlink timing offset reporting operation (block 910). For example, a UE (e.g., using Figure 11 The receiving component 1102 and / or the communication manager 1106 depicted in FIG may receive configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation, as described above.

[0170] like Figure 9 As further shown, in some aspects, process 900 may include receiving a first CMR associated with a first TRP (block 920). For example, a UE (e.g., using Figure 11 The receiving component 1102 and / or the communication manager 1106 depicted in FIG may receive a first CMR associated with a first TRP, as described above.

[0171] like Figure 9 As further shown, in some aspects, process 900 may include receiving a second CMR associated with a second TRP (block 930). For example, a UE (e.g., using Figure 11 The receiving component 1102 and / or the communication manager 1106 depicted in FIG may receive a second CMR associated with a second TRP, as described above.

[0172] like Figure 9 As further shown, in some aspects, process 900 may include sending CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR (block 940). Figure 11 The sending component 1104 and / or the communication manager 1106 depicted in the figure may send CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR, as described above.

[0173] Process 900 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.

[0174] In a first aspect, the timing offset comprises a timing difference measurement between a first timing associated with a first CMR and a second timing associated with a second CMR. In a second aspect, alone or in combination with the first aspect, the first timing is based on a reference timing associated with a reference CMR index. In a third aspect, alone or in combination with one or more of the first and second aspects, the configuration information indicates the reference CMR index. In a fourth aspect, alone or in combination with one or more of the first to third aspects, the configuration information includes an explicit indication of the reference CMR index. In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the inter-CMR downlink timing offset information indicates that the downlink timing offset comprises a timing difference between a first timing associated with the first CMR and a second timing associated with the reference CMR index. In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the configuration information indicates that the reference CMR index comprises a CMR index that satisfies a CMR reference condition among a plurality of CMR indexes.

[0175] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the CSI feedback information includes a reporting bitmap indicating a timing offset reporting status for each of a plurality of CMRs including a first CMR and a second CMR. In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the CSI feedback information includes inter-CMR downlink timing offset information based on satisfied reporting conditions.

[0176] In a ninth aspect, either alone or in combination with one or more of aspects 1 to 8, the inter-CMR downlink timing offset information comprises quantization of the timing offset. In a tenth aspect, either alone or in combination with one or more of aspects 1 to 9, the quantization of the timing offset comprises at least one resolvable delay span associated with enhanced type IICSI feedback. In an eleventh aspect, either alone or in combination with one or more of aspects 1 to 10, the quantization of the timing offset comprises at least one frequency-domain basis delay unit associated with enhanced type IICSI feedback.

[0177] In a twelfth aspect, either alone or in combination with one or more of aspects 1 to eleven, process 900 comprises receiving communications based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on inter-CMR downlink timing offset information. In a thirteenth aspect, either alone or in combination with one or more of aspects 1 to twelfth, receiving communications comprises receiving communications via at least one of a PDCCH or a PDSCH. In a fourteenth aspect, either alone or in combination with one or more of aspects 1 to thirteen, the inter-CMR downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the iFFT post-processed signal. In a fifteenth aspect, either alone or in combination with one or more of aspects 1 to fourteen, the inter-CMR downlink timing offset compensation comprises a per-UE phase ramp of frequency domain samples associated with the iFFT pre-processed signal.

[0178] although Figure 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Figure 9 900. In some embodiments, the process 900 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 900 may be executed in parallel.

[0179] Figure 10 is a diagram illustrating an example process 1000, for example, performed by a network node, in accordance with the present disclosure. Example process 1000 is an example of operations in which a network node (e.g., network node 110) performs operations associated with reference signal timing offset reporting for mTRP CJT CSI feedback.

[0180] like Figure 10 As shown, in some aspects, process 1000 may include sending configuration information associated with mTRP CJT CSI reporting operation, the configuration information indicating inter-CMR downlink timing offset reporting operation (block 1010). For example, a network node (e.g., using Figure 12 The transmitting component 1204 and / or the communication manager 1206 depicted in FIG may transmit configuration information associated with the mTRP CJT CSI reporting operation, the configuration information indicating the inter-CMR downlink timing offset reporting operation, as described above.

[0181] like Figure 10 As further shown, in some aspects, process 1000 may include sending a first CMR associated with a first TRP (block 1020). For example, a network node (e.g., using Figure 12 The sending component 1204 and / or the communication manager 1206 depicted in FIG may send a first CMR associated with a first TRP, as described above.

[0182] like Figure 10 As further shown, in some aspects, process 1000 may include sending a second CMR associated with a second TRP (block 1030). For example, a network node (e.g., using Figure 12 The sending component 1204 and / or the communication manager 1206 depicted in FIG may send a second CMR associated with the second TRP, as described above.

[0183] like Figure 10 As further shown, in some aspects, process 1000 may include receiving CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR (block 1040). For example, a network node (e.g., using Figure 12 The receiving component 1202 and / or the communication manager 1206 depicted in the figure may receive CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR, as described above.

[0184] Process 1000 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.

[0185] In a first aspect, the timing offset comprises a timing difference measurement between a first timing associated with a first CMR and a second timing associated with a second CMR. In a second aspect, alone or in combination with the first aspect, the first timing is based on a reference timing associated with a reference CMR index. In a third aspect, alone or in combination with one or more of the first and second aspects, the configuration information indicates the reference CMR index. In a fourth aspect, alone or in combination with one or more of the first to third aspects, the configuration information includes an explicit indication of the reference CMR index. In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the inter-CMR downlink timing offset information indicates that the downlink timing offset comprises a timing difference between a first timing associated with the first CMR and a second timing associated with the reference CMR index. In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the configuration information indicates that the reference CMR index comprises a CMR index that satisfies a CMR reference condition among a plurality of CMR indexes.

[0186] In a seventh aspect, either alone or in combination with one or more of aspects 1 to 6, the CSI feedback information includes a reporting bitmap indicating a timing offset reporting status for each of a plurality of CMRs, including a first CMR and a second CMR. In an eighth aspect, either alone or in combination with one or more of aspects 1 to 7, the CSI feedback information includes inter-CMR downlink timing offset information based on satisfying a reporting condition. In a ninth aspect, either alone or in combination with one or more of aspects 1 to 8, the inter-CMR downlink timing offset information includes quantization of the timing offset. In a tenth aspect, either alone or in combination with one or more of aspects 1 to 9, the quantization of the timing offset includes at least one resolvable delay span associated with enhanced type IICSI feedback. In an eleventh aspect, either alone or in combination with one or more of aspects 1 to 10, the quantization of the timing offset includes at least one frequency-domain basis delay unit associated with enhanced type IICSI feedback.

[0187] In a twelfth aspect, either alone or in combination with one or more of aspects 1 to eleven, process 1000 comprises sending communications based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on inter-CMR downlink timing offset information. In a thirteenth aspect, either alone or in combination with one or more of aspects 1 to twelfth, sending communications comprises sending communications via at least one of a PDCCH or a PDSCH. In a fourteenth aspect, either alone or in combination with one or more of aspects 1 to thirteen, the inter-CMR downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with a post-IFFT processed signal. In a fifteenth aspect, either alone or in combination with one or more of aspects 1 to fourteen, the inter-CMR downlink timing offset compensation comprises a per-UE phase ramp of frequency domain samples associated with a pre-iFFT processed signal.

[0188] although Figure 10 Example blocks of process 1000 are shown, but in some aspects, process 1000 may include Figure 10 1000. In some embodiments, the process 1000 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 1000 may be executed in parallel.

[0189] Figure 111 is a diagram of an example apparatus 1100 for wireless communication according to the present disclosure. Apparatus 1100 may be a UE, or a UE may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102, a sending component 1104, and / or a communication manager 1106, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1106 is a communication manager that is configured to communicate with one another. Figure 1 The described communication manager 140. As shown, the device 1100 can communicate with another device 1108, such as a UE or a network node (such as a CU, DU, RU, or base station), using a receiving component 1102 and a sending component 1104.

[0190] In some aspects, the apparatus 1100 may be configured to perform Figure 5 and Figure 6 Additionally or alternatively, the apparatus 1100 may be configured to perform one or more of the processes described herein, such as Figure 7 The process of 700 Figure 9 In some aspects, Figure 11 The device 1100 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, one or more components of the UE described. Figure 11 One or more of the components shown may be combined Figure 2 Additionally or alternatively, one or more components in the set of components 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 instructions or code that are stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0191] The receiving component 1102 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1108. The receiving component 1102 may provide the received communications to one or more other components of the device 1100. In some aspects, the receiving component 1102 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 one or more other components of the device 1100. In some aspects, the receiving component 1102 may include a combination of Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0192] The transmitting component 1104 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1108. In some aspects, one or more other components of the device 1100 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1108. In some aspects, the transmitting component 1104 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 the device 1108. In some aspects, the transmitting component 1104 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 1104 can be co-located with the receive component 1102 in a transceiver.

[0193] The communications manager 1106 can support the operation of the receiving component 1102 and / or the sending component 1104. For example, the communications manager 1106 can receive information associated with configuring the receipt of communications by the receiving component 1102 and / or the sending of communications by the sending component 1104. Additionally or alternatively, the communications manager 1106 can generate and / or provide control information to the receiving component 1102 and / or the sending component 1104 to control the receipt and / or sending of communications.

[0194] Receiving component 1102 may receive configuration information associated with an inter-TCI downlink timing offset reporting operation. Receiving component 1102 may receive a first reference signal associated with a first TCI state. Receiving component 1102 may receive a second reference signal associated with a second TCI state. Transmitting component 1104 may transmit, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state. Receiving component 1102 may receive at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal. Receiving component 1102 may receive at least one CSI-RS based on an inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information. Receiving component 1102 may receive a communication based on the inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

[0195] Receiving component 1102 may receive configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. Receiving component 1102 may receive a first CMR associated with a first TRP. Receiving component 1102 may receive a second CMR associated with a second TRP. Transmitting component 1104 may transmit CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR. Receiving component 1102 may receive communications based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on the inter-CMR downlink timing offset information.

[0196] Figure 11 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 11 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 11 Two or more components shown may be implemented in a single component, or Figure 11 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 11 The illustrated set of component(s) may be described as being executable by Figure 11 Another collection of components shown performs one or more functions.

[0197] Figure 12 1 is a diagram of an example apparatus 1200 for wireless communication according to the present disclosure. Apparatus 1200 may be a network node, or a network node may include apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202, a sending component 1204, and / or a communication manager 1206, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1206 is a communication manager that is configured to communicate with one another. Figure 1 The described communication manager 150. As shown, the device 1200 can communicate with another device 1208, such as a UE or a network node (such as a CU, DU, RU, or base station), using a receiving component 1202 and a sending component 1204.

[0198] In some aspects, the apparatus 1200 may be configured to perform Figure 5 and Figure 6 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more of the processes described herein, such as Figure 8 The process of 800 Figure 10In some aspects, Figure 12 The apparatus 1200 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 Additionally or alternatively, one or more components of the described network node. Figure 12 One or more of the components shown may be combined Figure 2 Additionally or alternatively, one or more components in the set of components 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 instructions or code that are stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0199] The receiving component 1202 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1208. The receiving component 1202 may provide the received communications to one or more other components of the device 1200. In some aspects, the receiving component 1202 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 one or more other components of the device 1200. In some aspects, the receiving component 1202 may include in conjunction with Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the receiving component 1202 and / or the transmitting component 1204 may include or be included in a network interface. The network interface may be configured to obtain and / or output signals for the device 1200 via one or more communication links (such as a backhaul link, a midhaul link, and / or a fronthaul link).

[0200] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1208. In some aspects, one or more other components of the device 1200 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the device 1208. In some aspects, the transmitting component 1204 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 the device 1208. In some aspects, the transmitting component 1204 may include combining Figure 2One 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 1204 can be co-located with the receive component 1202 in a transceiver.

[0201] The communications manager 1206 can support the operation of the receiving component 1202 and / or the sending component 1204. For example, the communications manager 1206 can receive information associated with configuring the receipt of communications by the receiving component 1202 and / or the sending of communications by the sending component 1204. Additionally or alternatively, the communications manager 1206 can generate and / or provide control information to the receiving component 1202 and / or the sending component 1204 to control the receipt and / or sending of communications.

[0202] The transmitting component 1204 may transmit configuration information associated with an inter-TCI downlink timing offset reporting operation. The transmitting component 1204 may transmit a first reference signal associated with a first TCI state. The transmitting component 1204 may transmit a second reference signal associated with a second TCI state. The receiving component 1202 may receive, based on the configuration information, inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state.

[0203] The transmitting component 1204 may transmit at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal. The transmitting component 1204 may transmit at least one CSI-RS based on the inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information. The transmitting component 1204 may transmit communications based on the inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

[0204] Transmitting component 1204 may transmit configuration information associated with an mTRP CJT CSI reporting operation, the configuration information indicating an inter-CMR downlink timing offset reporting operation. Transmitting component 1204 may transmit a first CMR associated with a first TRP. Transmitting component 1204 may transmit a second CMR associated with a second TRP. Receiving component 1202 may receive CSI feedback information based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR. Transmitting component 1204 may transmit communications based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on the inter-CMR downlink timing offset information.

[0205] Figure 12 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 12 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 12 Two or more components shown may be implemented in a single component, or Figure 12 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 12 The illustrated set of component(s) may be described as being executable by Figure 12 Another collection of components shown performs one or more functions.

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

[0207] Aspect 1: A method of wireless communication performed by a user equipment (UE), the method comprising: receiving configuration information associated with sending an inter-configuration indication (TCI) downlink timing offset reporting operation; receiving a first reference signal associated with a first TCI state; receiving a second reference signal associated with a second TCI state; and sending inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0208] Aspect 2: The method according to aspect 1, wherein the first reference signal comprises a first periodic downlink reference signal and the second reference signal comprises a second periodic downlink reference signal.

[0209] Aspect 3: The method according to any one of claims 1 or 2, wherein at least one of the first reference signal or the second reference signal comprises at least one of a synchronization signal block or a tracking reference signal.

[0210] Aspect 4: According to the method described in any one of Aspects 1 to 3, the method further includes receiving at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal.

[0211] Aspect 5: The method according to any one of aspects 1 to 4, wherein the downlink timing offset comprises a timing difference measurement between a first timing associated with the first TCI state and a second timing associated with the second TCI state.

[0212] Aspect 6: The method according to aspect 5, wherein the first timing is based on a reference timing associated with a reference TCI state.

[0213] Aspect 7: The method according to aspect 6, wherein the configuration information indicates the reference TCI state.

[0214] Aspect 8: The method according to any one of Aspects 6 or 7, wherein the reference TCI state comprises an activated TCI state having a TCI state index that satisfies a reference TCI state condition among a plurality of activated TCI states.

[0215] Aspect 9: The method according to any one of aspects 6 to 8, wherein the reference TCI state comprises an activated TCI state having an associated reference signal received power (RSRP) satisfying a reference TCI state condition among a plurality of activated TCI states.

[0216] Aspect 10: The method according to any one of aspects 1 to 9, wherein sending the inter-TCI downlink timing offset information includes sending a quantized downlink timing offset.

[0217] Aspect 11: The method of aspect 10, wherein the quantized downlink timing offset comprises at least one resolvable delay span associated with enhanced type II channel state information (CSI) feedback.

[0218] Aspect 12: The method according to any one of aspects 10 or 11, wherein the quantized downlink timing offset comprises at least one frequency-domain based delay unit associated with enhanced type II channel state information (CSI) feedback.

[0219] Aspect 13: The method according to any one of aspects 1 to 12, wherein the configuration information indicates a reporting periodicity associated with the inter-TCI downlink timing offset reporting operation.

[0220] Aspect 14: The method according to any one of aspects 1 to 13, wherein the inter-TCI downlink timing offset reporting operation includes an aperiodic reporting operation.

[0221] Aspect 15: A method according to any one of Aspects 1 to 14, wherein the configuration information indicates a triggering event for triggering the inter-TCI downlink timing offset reporting operation, and wherein sending the inter-TCI downlink timing offset information includes sending the inter-TCI downlink timing offset information based on detection of the occurrence of the triggering event.

[0222] Aspect 16: The method according to aspect 15, wherein the detection of the occurrence of the triggering event includes determining that the downlink timing offset meets a reporting condition.

[0223] Aspect 17: According to any one of Aspects 1 to 16, the method also includes receiving at least one channel state information (CSI) reference signal (CSI-RS) based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

[0224] Aspect 18: The method according to any one of aspects 1 to 17, further comprising receiving communications based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

[0225] Aspect 19: The method of aspect 18, wherein receiving the communication comprises receiving the communication via a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0226] Aspect 20: The method according to any one of aspects 18 or 19, wherein the inter-TCI downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the inverse fast Fourier transform post-processing signal.

[0227] Aspect 21: The method according to any one of aspects 18 to 20, wherein the inter-TCI downlink timing offset compensation comprises a per-UE phase ramp-up of frequency domain samples associated with the inverse fast Fourier transform pre-processed signal.

[0228] Aspect 22: A method of wireless communication performed by a network node, the method comprising: sending configuration information associated with a sending inter-configuration indication (TCI) downlink timing offset reporting operation; sending a first reference signal associated with a first TCI state; sending a second reference signal associated with a second TCI state; and receiving inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state based on the configuration information.

[0229] Aspect 23: The method according to aspect 22, wherein the first reference signal comprises a first periodic downlink reference signal and the second reference signal comprises a second periodic downlink reference signal.

[0230] Aspect 24: The method according to any one of aspects 22 or 23, wherein at least one of the first reference signal or the second reference signal comprises at least one of a synchronization signal block or a tracking reference signal.

[0231] Aspect 25: According to the method described in any one of Aspects 22 to 24, the method further includes sending at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal.

[0232] Aspect 26: The method according to any one of aspects 22 to 25, wherein the downlink timing offset comprises a timing difference measurement between a first timing associated with the first TCI state and a second timing associated with the second TCI state.

[0233] Aspect 27: The method according to aspect 26, wherein the first timing is based on a reference timing associated with a reference TCI state.

[0234] Aspect 28: The method according to aspect 27, wherein the configuration information indicates the reference TCI state.

[0235] Aspect 29: The method according to any one of Aspects 27 or 28, wherein the reference TCI state comprises an activated TCI state having a TCI state index satisfying a reference TCI state condition among a plurality of activated TCI states.

[0236] Aspect 30: The method according to any one of aspects 27 to 29, wherein the reference TCI state comprises an activated TCI state having an associated reference signal received power (RSRP) satisfying a reference TCI state condition among a plurality of activated TCI states.

[0237] Aspect 31: The method according to any one of aspects 22 to 30, wherein receiving the inter-TCI downlink timing offset information includes receiving a quantized downlink timing offset.

[0238] Aspect 32: The method of aspect 31, wherein the quantized downlink timing offset comprises at least one resolvable delay span associated with enhanced type II channel state information (CSI) feedback.

[0239] Aspect 33: The method according to any one of aspects 31 or 32, wherein the quantized downlink timing offset comprises at least one frequency-domain based delay unit associated with enhanced type II channel state information (CSI) feedback.

[0240] Aspect 34: The method according to any one of aspects 22 to 33, wherein the configuration information indicates a reporting periodicity associated with the inter-TCI downlink timing offset reporting operation.

[0241] Aspect 35: The method according to any one of aspects 22 to 34, wherein the inter-TCI downlink timing offset reporting operation includes an aperiodic reporting operation.

[0242] Aspect 36: A method according to any one of Aspects 22 to 35, wherein the configuration information indicates a triggering event for triggering the inter-TCI downlink timing offset reporting operation, and wherein receiving the inter-TCI downlink timing offset information includes receiving the inter-TCI downlink timing offset information based on detection of the occurrence of the triggering event.

[0243] Aspect 37: The method according to aspect 36, wherein the detection of the occurrence of the triggering event includes determining that the downlink timing offset meets a reporting condition.

[0244] Aspect 38: According to any one of Aspects 22 to 37, the method also includes sending at least one channel state information (CSI) reference signal (CSI-RS) based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

[0245] Aspect 39: The method according to any one of aspects 22 to 38 further includes sending communications based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

[0246] Aspect 40: The method of aspect 39, wherein transmitting the communication comprises transmitting the communication via a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0247] Aspect 41: The method according to any one of aspects 39 or 40, wherein the inter-TCI downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the inverse fast Fourier transform post-processing signal.

[0248] Aspect 42: The method according to any one of aspects 39 to 41, wherein the inter-TCI downlink timing offset compensation comprises a per-UE phase ramp-up of frequency domain samples associated with the inverse fast Fourier transform pre-processed signal.

[0249] Aspect 43: A method of wireless communication performed by a user equipment (UE), the method comprising: receiving configuration information associated with a multiple transmit-receive point (mTRP) coherent joint transmission (CJT) channel state information (CSI) reporting operation, the configuration information indicating an inter-CSI-RS (inter-CMR) downlink timing offset reporting operation for CSI measurement; receiving a first CMR associated with a first transmit-receive point (TRP); receiving a second CMR associated with a second TRP; and sending CSI feedback information based on the configuration information, the CSI feedback information comprising inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0250] Aspect 44: The method of aspect 43, wherein the timing offset comprises a timing difference measurement between a first timing associated with the first CMR and a second timing associated with the second CMR.

[0251] Aspect 45: The method according to aspect 44, wherein the first timing is based on a reference timing associated with a reference CMR index.

[0252] Aspect 46: The method according to aspect 45, wherein the configuration information indicates the reference CMR index.

[0253] Aspect 47: The method according to aspect 46, wherein the configuration information includes an explicit indication of the reference CMR index.

[0254] Aspect 48: The method according to aspect 47, wherein the inter-CMR downlink timing offset information indicates a downlink timing offset including a timing difference between a first timing associated with the first CMR and a second timing associated with the second CMR.

[0255] Aspect 49: The method according to any one of aspects 46 to 48, wherein the configuration information indicates that the reference CMR index includes a CMR index that satisfies a CMR reference condition among a plurality of CMR indexes.

[0256] Aspect 50: The method according to any one of aspects 43 to 49, wherein the CSI feedback information includes a reporting bitmap, the reporting bitmap indicating a timing offset reporting status for each of a plurality of CMRs including the first CMR and the second CMR.

[0257] Aspect 51: The method according to any one of aspects 43 to 50, wherein the CSI feedback information includes the inter-CMR downlink timing offset information based on satisfying a reporting condition.

[0258] Aspect 52: The method according to any one of aspects 43 to 51, wherein the inter-CMR downlink timing offset information comprises a quantization of the timing offset.

[0259] Aspect 53: The method of aspect 52, wherein the quantization of the timing offset comprises at least one resolvable delay span associated with enhanced type II channel state information (CSI) feedback.

[0260] Aspect 54: The method according to any one of aspects 52 or 53, wherein the quantization of the timing offset comprises at least one frequency-domain based delay unit associated with enhanced type II channel state information (CSI) feedback.

[0261] Aspect 55: The method according to any one of aspects 43 to 54, further comprising receiving communications based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on the inter-CMR downlink timing offset information.

[0262] Aspect 56: The method of aspect 55, wherein receiving the communication comprises receiving the communication via a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0263] Aspect 57: The method according to any one of aspects 55 or 56, wherein the inter-CMR downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the inverse fast Fourier transformed post-processed signal.

[0264] Aspect 58: The method according to any one of aspects 55 to 57, wherein the inter-CMR downlink timing offset compensation comprises a per-UE phase ramp-up of frequency domain samples associated with the inverse fast Fourier transform pre-processed signal.

[0265] Aspect 59: A method of wireless communication performed by a network node, the method comprising: sending configuration information associated with a multiple transmit-receive point (mTRP) coherent joint transmission (CJT) channel state information (CSI) reporting operation, the configuration information indicating an inter-CSI-RS (inter-CMR) downlink timing offset reporting operation for CSI measurement; sending a first CMR associated with a first transmit-receive point (TRP); sending a second CMR associated with a second TRP; and receiving CSI feedback information based on the configuration information, the CSI feedback information comprising inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

[0266] Aspect 60: The method of aspect 59, wherein the timing offset comprises a timing difference measurement between a first timing associated with the first CMR and a second timing associated with the second CMR.

[0267] Aspect 61: The method according to aspect 60, wherein the first timing is based on a reference timing associated with a reference CMR index.

[0268] Aspect 62: The method according to aspect 61, wherein the configuration information indicates the reference CMR index.

[0269] Aspect 63: The method according to aspect 62, wherein the configuration information includes an explicit indication of the reference CMR index.

[0270] Aspect 64: The method according to aspect 63, wherein the inter-CMR downlink timing offset information indicates a downlink timing offset including a timing difference between a first timing associated with the first CMR and a second timing associated with the second CMR.

[0271] Aspect 65: The method according to any one of Aspects 62 to 64, wherein the configuration information indicates that the reference CMR index includes a CMR index satisfying a CMR reference condition among a plurality of CMR indexes.

[0272] Aspect 66: The method according to any one of aspects 59 to 65, wherein the CSI feedback information includes a reporting bitmap, the reporting bitmap indicating a timing offset reporting status for each of a plurality of CMRs including the first CMR and the second CMR.

[0273] Aspect 67: The method according to any one of aspects 59 to 66, wherein the CSI feedback information includes the inter-CMR downlink timing offset information based on satisfying a reporting condition.

[0274] Aspect 68: The method according to any one of aspects 59 to 67, wherein the inter-CMR downlink timing offset information includes a quantization of the timing offset.

[0275] Aspect 69: The method of aspect 68, wherein the quantization of the timing offset comprises at least one resolvable delay span associated with enhanced type II channel state information (CSI) feedback.

[0276] Aspect 70: The method according to any one of aspects 68 or 69, wherein the quantization of the timing offset comprises at least one frequency-domain based delay unit associated with enhanced type II channel state information (CSI) feedback.

[0277] Aspect 71: The method according to any one of aspects 59 to 70, further comprising sending communications based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on the inter-CMR downlink timing offset information.

[0278] Aspect 72: The method of aspect 71, wherein sending the communication comprises sending the communication via a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).

[0279] Aspect 73: The method according to any one of aspects 71 or 72, wherein the inter-CMR downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with the inverse fast Fourier transformed post-processed signal.

[0280] Aspect 74: The method according to any one of aspects 71 to 73, wherein the inter-CMR downlink timing offset compensation comprises a per-UE phase ramp-up of frequency domain samples associated with the inverse fast Fourier transform pre-processed signal.

[0281] Aspect 75: 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 a method according to one or more of Aspects 1 to 21.

[0282] Aspect 76: 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 one or more aspects of aspects 1 to 21.

[0283] Aspect 77: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more aspects of aspects 1 to 21.

[0284] Aspect 78: 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 aspects of aspects 1 to 21.

[0285] Aspect 79: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 1 to 21.

[0286] Aspect 80: 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 a method according to one or more of Aspects 22 to 42.

[0287] Aspect 81: 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 one or more aspects of aspects 22 to 42.

[0288] Aspect 82: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 22 to 42.

[0289] Aspect 83: 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 aspects of aspects 22 to 42.

[0290] Aspect 84: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 22 to 42.

[0291] Aspect 85: 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 a method according to one or more of Aspects 43 to 58.

[0292] Aspect 86: 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 one or more aspects of aspects 43 to 58.

[0293] Aspect 87: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more aspects of aspects 43 to 58.

[0294] Aspect 88: 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 aspects of aspects 43 to 58.

[0295] Aspect 89: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more aspects of aspects 43 to 58.

[0296] Aspect 90: 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 a method according to one or more of Aspects 59 to 74.

[0297] Aspect 91: 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 one or more aspects of aspects 59 to 74.

[0298] Aspect 92: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 59 to 74.

[0299] Aspect 93: 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 aspects of aspects 59 to 74.

[0300] Aspect 94: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 59 to 74.

[0301] While the foregoing disclosure provides illustration and description, it is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

[0302] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions, 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 different forms of hardware and / or hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, no reference is made herein to specific software code to describe the operation and behavior of the systems and / or methods, as those skilled in the art will appreciate that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0303] As used herein, "satisfying a threshold" may mean that 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.

[0304] Although specific combinations of features are 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 not specifically described in the claims and / or 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, a phrase referring to "at least one of" a 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 encompass a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination of 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 arrangement of a, b, and c).

[0305] 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 articles "one" and "a kind of" are intended to include one or more projects and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more projects connected with 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 projects and can be used interchangeably with "one or more". If only want to refer to a project, 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, "an element with" A can also have B). In addition, the phrase "based on" is intended to represent "based at least in part on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and 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) for wireless communication, the user equipment (UE) comprising: Memory; and one or more processors coupled to the memory and configured to cause the UE to: receiving and sending configuration information associated with downlink timing offset reporting between configuration indicators (TCIs); receiving a first reference signal associated with a first TCI state; receiving a second reference signal associated with a second TCI state; as well as Inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state is transmitted based on the configuration information. 2 . The UE of claim 1 , wherein the first reference signal comprises a first periodic downlink reference signal and the second reference signal comprises a second periodic downlink reference signal.

3. The UE of claim 1, wherein at least one of the first reference signal or the second reference signal comprises at least one of a synchronization signal block or a tracking reference signal.

4. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to receive at least one additional reference signal, wherein the inter-TCI downlink timing offset information indicates at least one additional downlink timing offset associated with the at least one additional reference signal.

5. The UE of claim 1 , wherein the downlink timing offset comprises a timing difference measurement between a first timing associated with the first TCI state and a second timing associated with the second TCI state.

6. The UE of claim 5, wherein the first timing is based on a reference timing associated with a reference TCI state, wherein the reference TCI state is satisfied by a TCI state in a plurality of activated TCI states based on at least one of a reference TCI state configuration or a reference TCI state condition.

7. The UE of claim 1 , wherein in order for the UE to transmit the inter-TCI downlink timing offset information, the one or more processors are configured to cause the UE to transmit a quantized downlink timing offset.

8. The UE of claim 7, wherein the quantized downlink timing offset comprises at least one of a resolvable delay span associated with enhanced type II channel state information (CSI) feedback or a frequency domain based delay unit associated with enhanced type II channel state information (CSI) feedback.

9. The UE according to claim 1, wherein the configuration information indicates a reporting periodicity associated with the inter-TCI downlink timing offset reporting operation.

10. The UE according to claim 1, wherein the inter-TCI downlink timing offset reporting operation comprises an aperiodic reporting operation.

11. The UE of claim 1 , wherein the configuration information indicates a triggering event for triggering the inter-TCI downlink timing offset reporting operation, and wherein, in order for the UE to send the inter-TCI downlink timing offset information, the one or more processors are configured to cause the UE to send the inter-TCI downlink timing offset information based on detection of an occurrence of the triggering event, wherein the detection of the occurrence of the triggering event includes determining that the downlink timing offset satisfies a reporting condition.

12. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to receive at least one channel state information (CSI) reference signal (CSI-RS) based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

13. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to receive at least one of a physical downlink control channel (PDCCH) communication or a physical downlink shared channel (PDSCH) communication based on inter-TCI downlink timing offset compensation, wherein the inter-TCI downlink timing offset compensation is based on the inter-TCI downlink timing offset information.

14. The UE of claim 13, wherein the inter-TCI downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with an inverse fast Fourier transform (IFFT)-processed signal.

15. The UE of claim 13, wherein the inter-TCI downlink timing offset compensation comprises a per-UE phase ramp of frequency domain samples associated with an inverse fast Fourier transform (IFFT) pre-processed signal.

16. A network node for wireless communication, the network node comprising: Memory; and one or more processors coupled to the memory and configured to cause the network node to: Sending configuration information associated with a downlink timing offset reporting operation between transmit configuration indications (TCIs); sending a first reference signal associated with a first TCI state; sending a second reference signal associated with a second TCI state; as well as Inter-TCI downlink timing offset information indicating a downlink timing offset associated with at least one of the first TCI state or the second TCI state is received based on the configuration information.

17. The network node of claim 16, wherein the downlink timing offset comprises a timing difference measurement between a first timing associated with the first TCI state and a second timing associated with the second TCI state.

18. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: Memory; and one or more processors coupled to the memory and configured to cause the UE to: receiving configuration information associated with a multiple transmit receive point (mTRP) coherent joint transmission (CJT) channel state information (CSI) reporting operation, the configuration information indicating an inter-CSI-RS (inter-CMR) downlink timing offset reporting operation for CSI measurement; receiving a first CMR associated with a first transmit reception point (TRP); receiving a second CMR associated with a second TRP; as well as CSI feedback information is sent based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

19. The UE of claim 18, wherein the timing offset comprises a timing difference measurement between a first timing associated with the first CMR and a second timing associated with the second CMR. 20 . The UE of claim 19 , wherein the first timing is based on a reference timing associated with a reference CMR index, wherein the reference CMR index is satisfied by a CMR index among a plurality of CMR indexes based on at least one of a reference CMR index configuration or a reference CMR state condition. 21 . The UE according to claim 18 , wherein the CSI feedback information includes a reporting bitmap indicating a timing offset reporting status for each of a plurality of CMRs including the first CMR and the second CMR.

22. The UE according to claim 18, wherein the CSI feedback information includes the inter-CMR downlink timing offset information based on satisfying a reporting condition.

23. The UE of claim 18, wherein the inter-CMR downlink timing offset information comprises a quantization of the timing offset.

24. The UE of claim 23, wherein the quantization of the timing offset comprises at least one of a resolvable delay span associated with enhanced type II channel state information (CSI) feedback or a frequency domain based delay unit associated with enhanced type II channel state information (CSI) feedback.

25. The UE of claim 18, wherein the one or more processors are further configured to cause the UE to receive at least one of a physical downlink control channel (PDCCH) communication or a physical downlink shared channel (PDSCH) communication based on inter-CMR downlink timing offset compensation, wherein the inter-CMR downlink timing offset compensation is based on the inter-CMR downlink timing offset information.

26. The UE of claim 25, wherein the inter-CMR downlink timing offset compensation comprises a per-UE cyclic shift of time domain samples associated with an inverse fast Fourier transform (IFFT)-post-processed signal.

27. The UE of claim 25, wherein the inter-CMR downlink timing offset compensation comprises a per-UE phase ramp of frequency domain samples associated with an inverse fast Fourier transform pre-processed signal.

28. A network node for wireless communication, the network node comprising: Memory; and one or more processors coupled to the memory and configured to: Sending configuration information associated with a multiple transmit receive point (mTRP) coherent joint transmission (CJT) channel state information (CSI) reporting operation, the configuration information indicating an inter-CSI-RS (inter-CMR) downlink timing offset reporting operation for CSI measurement; sending a first CMR associated with a first transmit-receive point (TRP); Sending a second CMR associated with the second TRP; as well as CSI feedback information is received based on the configuration information, the CSI feedback information including inter-CMR downlink timing offset information indicating a timing offset associated with at least one of the first CMR or the second CMR.

29. The network node of claim 28, wherein the timing offset comprises a timing difference measurement between a first timing associated with the first CMR and a second timing associated with the second CMR.

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