Compensation or performance indication for channel state information reporting

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may generate an indication of phase compensation per unit of time associated with channel state information (CSI) reporting for one or more transmit receive points (TRPs) relative to the reference TRPs. The UE may transmit the indication in association with the CSI report. 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 compensating or providing performance indications for channel state information reports. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth or 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 base stations that support communications for a user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink communications and uplink communications. A "downlink" (or "DL") refers to the communication link from a base station to a UE, and an "uplink" (or "UL") refers to the communication link from a UE to a base station.

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

[0005] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include generating an indication of a phase compensation per time unit associated with a channel state information (CSI) report for one or more TRPs relative to a reference transmit receive point (TRP). The method may include sending the indication in association with the CSI report.

[0006] Some aspects described herein relate to a method of wireless communication performed by a network entity. The method may include receiving an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The method may include sending a physical downlink shared channel (PDSCH) communication based at least in part on the indication.

[0007] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include generating an indication of performance of a CSI report. The method may include sending the indication in association with the CSI report.

[0008] Some aspects described herein relate to a method of wireless communication performed by a network entity. The method may include receiving an indication of performance of a CSI report. The method may include sending a PDSCH communication based at least in part on the CSI report and the indication of the performance of the CSI report.

[0009] 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 generate an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The one or more processors may be configured to send the indication in association with the CSI report.

[0010] Some aspects described herein relate to a network entity for wireless communication. The network entity may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The one or more processors may be configured to send a PDSCH communication based at least in part on the indication.

[0011] 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 generate an indication of performance of a CSI report. The one or more processors may be configured to send the indication in association with the CSI report.

[0012] Some aspects described herein relate to a network entity for wireless communication. The network entity may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive an indication of performance of a CSI report. The one or more processors may be configured to send a PDSCH communication based at least in part on the CSI report and the indication of the performance of the CSI report.

[0013] 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 generate an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The instruction set, when executed by one or more processors of the UE, may cause the UE to send the indication in association with the CSI report.

[0014] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network entity. The instruction set, when executed by one or more processors of the network entity, may cause the network entity to receive an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The instruction set, when executed by one or more processors of the network entity, may cause the network entity to send a PDSCH communication based at least in part on the indication.

[0015] 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 generate an indication of performance of a CSI report. The instruction set, when executed by one or more processors of the UE, may cause the UE to send the indication in association with the CSI report.

[0016] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network entity. The instruction set, when executed by one or more processors of the network entity, may cause the network entity to receive an indication of performance of a CSI report. The instruction set, when executed by one or more processors of the network entity, may cause the network entity to send a PDSCH communication based at least in part on the CSI report and the indication of the performance of the CSI report.

[0017] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for generating an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The apparatus may include means for sending the indication in association with the CSI report.

[0018] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The apparatus may include means for sending a PDSCH communication based at least in part on the indication.

[0019]

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for generating an indication of performance of a CSI report. The apparatus may include means for sending the indication in association with the CSI report.

[0020]

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving an indication of performance of a CSI report. The apparatus may include means for sending a PDSCH communication based at least in part on the CSI report and the indication of the performance of the CSI report.

[0021] Aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, UEs, base stations, network entities, wireless communication devices, and / or processing systems as fully described herein with reference to and as illustrated in the drawings and description.

[0022] The features and technical advantages of examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0023] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to fully understand the above-mentioned features of the present disclosure, a more specific description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0025] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0026] Figure 2 is a diagram illustrating an example of a network entity (eg, a base station) communicating with a user equipment (UE) in a wireless network according to the present disclosure.

[0027] Figure 3 is a diagram illustrating an example of a decomposed base station according to the present disclosure.

[0028] Figure 4 An example logical architecture of a distributed random access network according to the present disclosure is illustrated.

[0029] Figure 5 is a diagram illustrating an example of multiple transmit-receive point (TRP) communication (sometimes referred to as multi-panel communication) according to the present disclosure.

[0030] Figure 6is a diagram illustrating an example of a channel state information (CSI) reference signal beam management process according to the present disclosure.

[0031] Figure 7 is a diagram illustrating examples of coherent joint transmission (CJT) and non-coherent joint transmission (NCJT) for multiple TRPs according to the present disclosure.

[0032] Figure 8 is a diagram illustrating an example of a CJT for multiple TRPs according to the present disclosure.

[0033] Fig. 9 is a diagram illustrating an example of Doppler frequency shift according to the present disclosure.

[0034] Fig.10 is a diagram illustrating an example of performance of indicating CSI reporting according to the present disclosure.

[0035] Fig.11 is a diagram illustrating an example of phase compensation of a CSI report according to the present disclosure.

[0036] Fig.12 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0037] Fig.13 is a diagram illustrating an example process performed, for example, by a network entity according to the present disclosure.

[0038] Fig.14 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0039] Fig.15 is a diagram illustrating an example process performed, for example, by a network entity according to the present disclosure.

[0040] Fig.16 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0041] Fig.17 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0042] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the protection scope of the present disclosure will be fully conveyed to those skilled in the art. It should 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 it is 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 a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functionality, or structures 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 claim.

[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, etc. (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 terms 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 5G and beyond (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 a user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e). The wireless network 100 may also include one or more network entities, such as a base station 110 (shown as BS110a, BS110b, BS110c, and BS110d) and / or other network entities. The base station 110 is a network entity that communicates with the UE 120. Base station 110 (sometimes referred to as BS) 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, and / or a transmit receive point (TRP). Each base station 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to a coverage area of ​​a base station 110 and / or a base station subsystem serving the coverage area, depending on the context in which the term is used.

[0046] Base station 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UE 120 associated with the femto cell (e.g., UE 120 in a closed subscriber group (CSG)). A base station 110 for a macro cell may be referred to as a macro base station. A base station 110 for a pico cell may be referred to as a pico base station. A base station 110 for a femto cell may be referred to as a femto base station or a home base station. In Figure 1 In the example shown in , BS 110a may be a macro base station for macro cell 102a, BS 110b may be a pico base station for pico cell 102b, and BS 110c may be a femto base station for femto cell 102c. A base station may support one or more (eg, three) cells.

[0047] In some examples, the cell may not necessarily be fixed, and the geographic area of ​​the cell may move according to the location of the mobile base station 110 (e.g., a mobile base station). In some examples, the base stations 110 may be interconnected with each other and / or to one or more other base stations 110 or network entities in the wireless network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0048] In some aspects, the term "base station" (e.g., base station 110) or "network entity" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, and / or one or more components thereof. For example, in some aspects, a "base station" or "network entity" may refer to a central unit (CU), a distributed unit (DU), a radio unit (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 entity" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with base station 110). In some aspects, the term "base station" or "network entity" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a plurality of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of the function, and the term "base station" or "network entity" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network entity" may refer to one or more virtual base stations and / 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 entity" may refer to one of the base station functions but not another. 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 entity that can receive transmissions of data from an upstream station (e.g., a network entity or UE 120) and transmit transmissions of data to a downstream station (e.g., a UE 120 or a network entity). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown in FIG, BS 110d (eg, a relay base station) may communicate with BS 110a (eg, a macro base station) and UE 120d to facilitate communication between BS 110a and UE 120d. Base station 110 that relays communication may be referred to as a relay station, relay base station, relay, or the like.

[0050] The wireless network 100 may be a heterogeneous network having network entities including different types of BSs, such as macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations 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 base station may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico base station, a femto base station, and a relay base station 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 entities and may provide coordination and control for the network entities. The network controller 130 may communicate with the base station 110 via a backhaul communication link. The network entities may also communicate directly with each other or indirectly via a wireless or wired backhaul communication link.

[0052] UE 120 may be dispersed throughout the 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 smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, and / or any other suitable device configured to communicate via a wireless medium.

[0053] Some UEs 120 may be considered as 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, which may communicate with a network entity, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included in a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0054] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology or air interface, etc. Frequency may be referred to as a carrier or 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) may communicate directly (e.g., without using a network entity as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0056] The devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various categories, bands, channels, etc., according to frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although 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 bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6GHz to 71GHz), FR4 (52.6GHz to 114.25GHz), and FR5 (114.25GHz to 300GHz). Each of these higher frequency bands falls within the EHF band.

[0058] Considering the above examples, unless otherwise explicitly stated, it should be understood that if the term "below 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. In addition, unless otherwise explicitly 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 or 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, UE 120 may include a communication manager 140. As described in greater detail elsewhere herein, communication manager 140 may generate an indication of a phase compensation per time unit associated with a channel state information (CSI) report for one or more TRPs relative to a reference TRP. Communication manager 140 may send the indication in association with the CSI report.

[0060] In some aspects, the communication manager 140 may generate an indication of the performance of the CSI report. The communication manager 140 may send the indication in association with the CSI report. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0061] In some aspects, a network entity (e.g., base station 110) may include a communication manager 150. As described in greater detail elsewhere herein, the communication manager 150 may receive an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP. The communication manager 150 may send a physical downlink shared channel (PDSCH) communication based at least in part on the indication.

[0062] In some aspects, the communication manager 150 may receive an indication of performance of the CSI report. The communication manager 150 may send a PDSCH communication based at least in part on the CSI report and the indication of performance of the CSI report. 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 2 2 is a diagram illustrating an example 200 of a network entity (e.g., base station 110) communicating with UE 120 in a wireless network 100 according to the present disclosure. Base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1).

[0065] At the base station 110, the transmit processor 220 may receive data intended for the UE 120 (or a set of UEs 120) from the data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQI) received from the UE 120. The base station 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may further process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0066] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the base station 110 and / or other base stations 110, and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a 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 a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the 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 network entities 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 groups of antenna elements, and / or one or more antenna arrays, etc. An antenna panel, antenna group, group of antenna elements, and / or antenna array may include one or more antenna elements (in a single housing or multiple housings), a group of coplanar antenna elements, a group 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] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to a network entity. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, with reference to Figures 4 to 17 ) any aspects of any of the methods described herein.

[0070] At a network entity (e.g., base station 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 of modem 232 shown as DEMOD), detected by MIMO detector 236 (where applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. The network entity may include a communication unit 244 and may communicate with network controller 130 via communication unit 244. The network entity may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network entity may include a modulator and a demodulator. In some examples, the network entity includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform operations described herein (e.g., with reference to Figures 4 to 17 ) any aspects of any of the methods described herein.

[0071] As described in more detail elsewhere herein, a controller / processor of a network entity (e.g., controller / processor 240 of base station 110), controller / processor 280 of UE 120, and / or Figure 2 Any other component of may perform one or more techniques associated with compensating for CSI reporting or indicating performance of CSI reporting. For example, controller / processor 240 of base station 110, controller / processor 280 of UE 120, and / or Figure 2 Any other component of the Fig.12 The process 1200 Fig.13 Process 1300, Fig.14 The process of 1400 Fig.15 1500 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for a network entity and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium that stores one or more instructions (e.g., code and / or program code) for wireless communication. For example, one or more instructions, when executed (e.g., directly, or after compilation, conversion, and / or interpretation) by one or more processors of a network entity and / or UE 120, may cause the one or more processors, UE 120, and / or the network entity to perform or direct, for example, Fig.12 The process 1200 Fig.13 Process 1300, Fig.14 The process of 1400 Fig.15 The operations of process 1500 and / or other processes described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0072] In some aspects, the UE 120 includes: means for generating an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP; and / or means for sending the indication in association with the CSI report. Means for the UE 120 to perform operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0073] In some aspects, the UE 120 includes means for generating an indication of performance of a CSI report and / or means for sending the indication in association with the CSI report.

[0074] In some aspects, a network entity (e.g., base station 110) includes: means for receiving an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP; and / or means for sending a PDSCH communication based at least in part on the indication. In some aspects, means for the network entity to perform operations described herein may include, for example, one or more of the following: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0075] In some aspects, the network entity includes: means for receiving an indication of performance of a CSI report; and / or means for sending a PDSCH communication based at least in part on the CSI report and the indication of performance of the CSI report.

[0076] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0077] Figure 3 is a diagram illustrating an example of a decomposed base station 300 according to the present disclosure.

[0078] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or a network equipment (such as a base station, or one or more units (or one or more components) that perform base station functionality can be implemented in an aggregated architecture or a decomposed architecture. For example, a BS (such as a node B, an evolved NB (eNB), an NR BS, a 5GNB, an access point (AP), a TRP or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0079] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack 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 aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a 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).

[0080] Base station type operations or network designs 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 (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functions across two or more units at various physical locations, as well as virtually distributing the functions of at least one unit, which may enable flexibility in network design. Various units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0081] The decomposed base station 300 architecture may include one or more CUs 310 that may communicate directly with the core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed base station units (such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via corresponding midhaul links, such as an F1 interface. The DU 330 may communicate with one or more RUs 340 via corresponding fronthaul links. Fronthaul links, midhaul links, and backhaul links may generally be referred to as "communication links." The RU 340 may communicate with a corresponding UE 120 via one or more RF access links. In some aspects, a UE 120 may be served by multiple RUs 340 simultaneously. The DU 330 and the RU 340 may also be referred to as "O-RAN DU (O-DU)" and "O-RAN RU (O-RU)", respectively. The network entity may include a CU, DU, RU, or any combination of CU, DU, and RU. The network entity may include a decomposed base station or one or more components of a decomposed base station, such as a CU, DU, RU, or any combination of CU, DU, and RU. The network entity may also include one or more of the following: a TRP, a relay station, a passive device, an intelligent reflective surface (IRS), or other components that may provide a network interface or service for a UE, a mobile station, a sensor / actuator, or other wireless device.

[0082] Each of the units (i.e., CU 310, DU 330, RU 340, and near-RT RIC 325, non-RT RIC 315, and SMO framework 305) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interfaces of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface that is configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally, the unit may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) that is configured to receive or send signals, or both, to one or more of the other units on a wireless transmission medium.

[0083] In some aspects, CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 310. CU 310 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, 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, CU 310 may be implemented to communicate with DU 330 for network control and signaling.

[0084] DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RU 340. In some aspects, DU 330 may host one or more of the following depending at least in part on a functional split such as that defined by 3GPP: a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.). In some aspects, DU 330 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 330 or with control functions hosted by CU 310.

[0085] The lower layer functionality may be implemented by one or more RUs 340. In some deployments, a RU 340 controlled by a DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing Fast Fourier Transform (FFT), Inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 340 may be implemented to handle over-the-air (OTA) communications with one or more UEs 120. In some implementations, real-time and non-real-time aspects of communicating with the control plane and user plane of the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable the implementation of the DU 330 and the CU 310 in a cloud-based RAN architecture (such as a vRAN architecture).

[0086] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some specific implementations, the SMO framework 305 may communicate directly with one or more RUs 340 via the O1 interface. The SMO framework 305 may also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305 .

[0087] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0088] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to adjust RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0089] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0090] Figure 4 An example logical architecture of a distributed RAN 400 according to the present disclosure is illustrated.

[0091] The 5G access node 405 may include an access node controller 410. The access node controller 410 may be a CU of the distributed RAN 400. In some aspects, a backhaul interface to the 5G core network 415 may terminate at the access node controller 410. The 5G core network 415 may include a 5G control plane component 420 and a 5G user plane component 425 (e.g., a 5G gateway), and a backhaul interface for one or both of the 5G control plane and the 5G user plane may terminate at the access node controller 410. Additionally or alternatively, a backhaul interface to one or more neighboring access nodes 430 (e.g., another 5G access node 405 and / or an LTE access node) may terminate at the access node controller 410.

[0092] The access node controller 410 may include one or more TRPs 435 and / or may communicate with one or more TRPs (e.g., via an F1 control (F1-C) interface and / or an F1 user (F1-U) interface). The TRP 435 may be a DU of the distributed RAN 400. In some aspects, the TRP 435 may correspond to the above combined Figure 1435. For example, different TRPs 435 may be included in different base stations 110. Additionally or alternatively, multiple TRPs 435 may be included in a single base station 110. In some aspects, a base station 110 may include a CU (e.g., an access node controller 410) and / or one or more DUs (e.g., one or more TRPs 435). In some cases, a TRP 435 may be referred to as a cell, a panel, an antenna array, or an array.

[0093] The TRP 435 may be connected to a single access node controller 410 or to multiple access node controllers 410. In some aspects, there may be a dynamic configuration of split logical functions within the architecture of the distributed RAN 400. For example, the PDCP layer, the RLC layer, and / or the MAC layer may be configured to terminate at the access node controller 410 or the TRP 435.

[0094] In some aspects, multiple TRPs 435 may transmit communications (e.g., the same communication or different communications) in the same transmit time interval (TTI) (e.g., time slot, mini-slot, subframe, or symbol) or in different TTIs using different quasi-co-location (QCL) relationships (e.g., different spatial parameters, different transmit configuration indicator (TCI) states, different pre-coding parameters, and / or different beamforming parameters). In some aspects, the TCI state may be used to indicate one or more QCL relationships. A TRP 435 may be configured to provide services to a UE 120 individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission with one or more other TRPs 435).

[0095] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0096] Figure 5 5 is a diagram illustrating an example 500 of multiple TRP (multi-TRP) communication (sometimes referred to as multi-panel communication) according to the present disclosure. Figure 5 As shown, multiple TRPs 505 can communicate with the same UE 120. TRP 505 can correspond to the above combined Figure 4 The TRP 435.

[0097] Multiple TRPs 505 (shown as TRP A and TRP B) may 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 505 may coordinate such communications via an interface between the TRPs 505 (e.g., a backhaul interface and / or an access node controller 410). When the TRPs 505 are co-located at the same base station 110 (e.g., when the TRPs 505 are different antenna arrays or panels of the same base station 110), the interface may have less latency and / or higher capacity, and when the TRPs 505 are located at different base stations 110, the interface may have greater latency and / or lower capacity (compared to co-location). Different TRPs 505 may 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 multi-layer communications).

[0098] 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 505 (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 505 (e.g., where one codeword is mapped to a first set of layers sent by a first TRP 505 and is mapped to a second set of layers sent by a second TRP 505). As another example, communications may be sent using multiple codewords, where different codewords are sent by different TRPs 505 (e.g., using different sets of layers). In either case, different TRPs 505 may use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers. For example, the first TRP 505 may use a first QCL relationship or a first TCI state for a first DMRS port set corresponding to a first layer set, and the second TRP 505 may use a second (different) QCL relationship or a second (different) TCI state for a second (different) DMRS port set corresponding to a second (different) layer set. In some aspects, the TCI state in the downlink control information (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).

[0099] 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 for each PDSCH). In this case, the first PDCCH may schedule a first codeword to be sent by the first TRP 505, and the second PDCCH may schedule a second codeword to be sent by the second TRP 505. In addition, a first DCI (e.g., sent by the first TRP 505) 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 use with the first TRP 505, and a second DCI (e.g., sent by the second TRP 505) 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 use with the second TRP 505. In this case, the DCI (e.g., having DCI format 1_0 or DCI format 1_1) may indicate a corresponding TCI state corresponding to the DCI for the TRP 505. The TCI field of the DCI indicates the corresponding TCI state (e.g., the TCI field of the first DCI indicates the first TCI state and the TCI field of the second DCI indicates the second TCI state).

[0100] As indicated above, Figure 5 are provided as examples. Other examples can be found in relation to Figure 5 The examples described are different.

[0101] Figure 6 600, 610, and 620 are diagrams illustrating examples of a CSI reference signal (CSI-RS) beam management process according to the present disclosure. Figure 6 As shown, example 600, example 610, and example 620 include UE 120 communicating with a network entity (e.g., base station 110) in a wireless network (e.g., wireless network 100). Figure 6 The devices shown are provided as examples, and the wireless network may support communication and beam management between other devices (e.g., between UE 120 and base station 110 or TRP, between mobile terminal nodes and control nodes, between IAB child nodes and IAB parent nodes, and / or between scheduled nodes and scheduling nodes). In some aspects, UE 120 and base station 110 may be in a connected state (e.g., an RRC connected state).

[0102] like Figure 6As shown, example 600 may include base station 110 and UE 120 communicating to perform beam management using CSI-RS. Example 600 depicts a first beam management process (e.g., P1 CSI-RS beam management). The first beam management process may be referred to as a beam selection process, an initial beam acquisition process, a beam scanning process, a cell search process, and / or a beam search process. Figure 6 As shown in example 600, CSI-RS may be configured to be sent from base station 110 to UE 120. CSI-RS may be configured to be periodic (e.g., using RRC signaling), semi-persistent (e.g., using MAC control element (MAC-CE) signaling), and / or aperiodic (e.g., using DCI).

[0103] The first beam management procedure may include the base station 110 performing beam scanning on multiple transmit (Tx) beams. The base station 110 may use each transmit beam to transmit a CSI-RS for beam management. In order to enable the UE 120 to perform receive (Rx) beam scanning, the base station may use the transmit beam to transmit each CSI-RS multiple times within the same RS resource set (e.g., using repetition) so that the UE 120 can scan through the receive beam in multiple transmit instances. For example, if the base station 110 has a set of N transmit beams and the UE 120 has a set of M receive beams, the CSI-RS may be transmitted M times on each of the N transmit beams, so that the UE 120 can receive M instances of the CSI-RS per transmit beam. In other words, for each transmit beam of the base station 110, the UE 120 may perform beam scanning through the receive beam of the UE 120. Thus, the first beam management procedure may enable UE 120 to measure CSI-RS on different transmit beams using different receive beams to support selection of base station 110 transmit beam / UE 120 receive beam pairs. UE 120 may report the measurements to base station 110 to enable base station 110 to select one or more beam pairs for communication between base station 110 and UE 120. Although example 600 has been described in conjunction with CSI-RS, the first beam management procedure may also use synchronization signal blocks (SSBs) to perform beam management in a similar manner as described above.

[0104] like Figure 6 As shown, example 610 may include base station 110 and UE 120 communicating to perform beam management using CSI-RS. Example 610 depicts a second beam management procedure (e.g., P2 CSI-RS beam management). The second beam management procedure may be referred to as a beam refinement procedure, a base station beam refinement procedure, a TRP beam refinement procedure, and / or a transmit beam refinement procedure. Figure 6As shown in example 610, the CSI-RS may be configured to be sent from the base station 110 to the UE 120. The CSI-RS may be configured to be non-periodic (e.g., using DCI). The second beam management procedure may include the base station 110 performing beam scanning on one or more transmit beams. The one or more transmit beams may be a subset of all transmit beams associated with the base station 110 (e.g., determined at least in part based on measurements reported by the UE 120 in conjunction with the first beam management procedure). The base station 110 may use each of the one or more transmit beams to transmit the CSI-RS for beam management. The UE 120 may measure each CSI-RS using a single (e.g., the same) receive beam (e.g., determined at least in part based on measurements performed in conjunction with the first beam management procedure). The second beam management procedure may enable the base station 110 to select the best transmit beam based at least in part on measurements of the CSI-RS reported by the UE 120 (e.g., measured by the UE 120 using a single receive beam).

[0105] like Figure 6 As shown, example 620 depicts a third beam management process (e.g., P3 CSI-RS beam management). The third beam management process may be referred to as a beam refinement process, a UE beam refinement process, and / or a receive beam refinement process. Figure 6 As shown in example 620, one or more CSI-RS may be configured to be sent from base station 110 to UE 120. The CSI-RS may be configured to be non-periodic (e.g., using DCI). The third beam management process may include base station 110 sending one or more CSI-RS using a single transmit beam (e.g., determined at least in part based on measurements reported by UE 120 in conjunction with the first beam management procedure and / or the second beam management procedure). In order to enable UE 120 to perform receive beam scanning, the base station may use the transmit beam to send CSI-RS multiple times (e.g., using repetition) within the same RS resource set, so that UE 120 can scan through one or more receive beams in multiple transmission instances. The one or more receive beams may be a subset of all receive beams associated with UE 120 (e.g., determined at least in part based on measurements performed in conjunction with the first beam management procedure and / or the second beam management procedure). The third beam management procedure may enable base station 110 and / or UE 120 to select the best receive beam based at least in part on reported measurements received from UE 120 (eg, measurements of the CSI-RS of the transmit beam using one or more receive beams).

[0106] As indicated above, Figure 6 is provided as an example of a beam management process. Other examples of beam management processes may be found with respect to Figure 6For example, UE 120 and base station 110 may perform the third beam management procedure before performing the second beam management procedure, and / or UE 120 and base station 110 may perform a similar beam management procedure to select a UE transmit beam.

[0107] Figure 7 is a diagram of example 700 illustrating coherent joint transmission (CJT) and non-coherent joint transmission (NCJT) for multiple TRPs according to the present disclosure.

[0108] CJT involves multiple transmitters that each transmit a message with a phase that is constructively combined at the receiver. CJT may include beamforming using antennas that are not co-located and correspond to different TRPs. CJT may improve signal power and spatial diversity for communications in NR networks.

[0109] UE 120 may measure the CSI-RS and send a CSI report indicating the CSI, such as a precoding matrix indicator (PMI). PMI is a matrix that indicates how data is transformed to antenna ports. The CSI report may include a codebook, which is a set of precoders or one or more PMIs. Type I codebooks may include predefined matrices. Type II codebooks may include more detailed CSI reports for multi-user MIMO and may include beam groups. CSI acquisition may be enhanced for CJT of multiple TRPs (e.g., up to 4 TRPs). An enhanced Type II codebook (eType-II codebook) may be an eType-II codebook structure, which may be generalized as where the pre-decoder for a specific layer on N3 subbands is written as where c i,m,l is the combination coefficient for the ith spatial basis (beam) and the mth frequency basis, and is a 2L×M matrix containing all coefficients, such as YesN t ×1 space domain (SD) basis, W1 is N containing all SD bases t ×2L matrix, and It is 1×N3FD basis; is an M×N3 matrix containing all FD bases. L can be a space domain basis such as a beam configuration or a TRP. M can be a frequency domain basis. The eType-II extension to CJT can be applied to the TRPs individually and then combined by co-phasing: where W(1) and W(2) are the associated eType-II pre-decoders for TRP1 and TRP2, and is a scaler for common phase (or vector for different subbands). The eType-II pre-decoder can be applied jointly across TRPs, where And the difference relative to 1 is that W(1) and W(2) are calculated jointly.

[0110] For eType-IICSI, the parameters may include an SD cardinality configuration represented as #SD:L={2,4,6}. The frequency domain cardinality may be represented as #FD: and The coefficients may include an amplitude scaling factor (p) and a beta shift factor (β). The non-zero coefficients (NZC) may be represented as #NZC: The network entity may configure a combination (1 out of 8) of (L, p1, p3, β) using RRC messages.

[0111] For eType-II with respect to CJT, further design considerations may be necessary for multiple TRPs. If multiple TRPs are supported (such as up to 4 TRPs), the UE may report the PMI for all TRPs jointly, and the UE may be expected to indicate the selection hypothesis. In order to indicate the channel conditions of different TRPs while balancing the feedback overhead (e.g., bitmaps for coefficient indication, coefficient feedback), different TRPs may have different numbering for the spatial domain basis (L) or the frequency domain basis (M). It may be necessary to support different codebooks based on, for example, a common phase across different TRPs (where the coefficients of the TRPs are calculated independently). The codebooks may be jointly calculated and reported across TRPs.

[0112] For NCJT based on spatial domain multiplexing (SDM), data is pre-coded separately on different TRPs. For example, pre-coder A is pre-coded for one TRP, and pre-coder B is pre-coded for a separate TRP. This can be expressed as: The non-bold letters are used for data of pre-decoder A and the first TRP, and the bold letters are used for data of pre-decoder B and the second TRP. V A :4×1,V B :4×2 may indicate a precoder for a specific TRP and rank (indicated by the rank indicator (RI)). Data (RI TRP ×1)X A :1×1,X B :2×1 can indicate data through TRP and RI.

[0113] For CJT, data is pre-coded jointly at different TRPs. For example, this can be expressed as: Pre-decoder V A :4×2,V B :4×2 and data(RI CJT×1)X:2×1. Reference numeral 702 shows joint precoding for multiple TRPs, rather than separate precoding as shown for NCJT. Reference numeral 704 shows 2 layers being jointly precoded. Reference numeral 706 shows a precoder for one layer of the eType-II codebook structure, which is generalized as

[0114] As indicated above, Figure 7 are provided as examples. Other examples can be found in the Figure 7 The examples described are different.

[0115] Figure 8 are diagrams illustrating examples 800 and 802 of CJT for multiple TRPs according to the present disclosure.

[0116] Type II codebook refinement for CJT may be used for multiple TRPs (e.g., up to 4 TRPs). The refinement may target frequency division duplex (FDD) and associated CSI reporting. A precoder utilizing Type II codebook reporting in the low band may enable a large number of ports for CJT via multiple TRPs or panels.

[0117] Example 800 shows a representation of a frequency domain (FD) joint codebook for TRP A and TRP B. For co-located TRPs (e.g., TRP A and TRP B with the same or different orientations), the FD joint codebook structure can be total (non-diagonal).

[0118] Example 802 shows the representation of the FD independent codebook. For distributed TRP, the FD independent codebook structure with the same phase / amplitude can be total (diagonal). The in-phase / amplitude factor q may also be implicit (i.e., absorbed into coefficients, without the need for explicit feedback).

[0119] As indicated above, Figure 8 Some examples are provided. Other examples can be found in Figure 8 The examples described are different.

[0120] Fig. 9 is a diagram illustrating an example 900 of Doppler frequency shift according to the present disclosure.

[0121] Example 900 shows UE 120 moving between TRP A and TRP B. Because UE 120 moves away from TRP A and toward TRP B during signaling, there may be a Doppler effect relative to both TRPs. That is, due to the movement of UE 120, the frequency at each TRP may be shifted relative to UE 120. For example, there may be a first Doppler shift 902f between TRP A and UE 120. D1 , and there may be a second Doppler frequency shift 904f between TRP B and UE 120 D2 , and in the worst case f D1 =-f D2 In such worst-case scenarios, even for relatively low UE movement speeds (e.g., 10 kilometers per hour (km / h)), the Doppler effect may cause more severe problems for multiple TRPs than for a single TRP. In the worst-case scenario for two TRPs, UE 120 may move away from TRP A and toward TRP B on the line between TRP A and TRP B. For a UE speed of 10 km / h, UE 120 may be able to reach the target position within 40 milliseconds (ms) (for f) after perfect phase alignment through PMI reporting at time t=0. c =700MHz) and within 15ms (for f c =2GHz) experiences a deep fade. Example phase error at 700MHz for a period of t=40ms It may be 56° at 3 km / h, 187° at 10 km / h and 560° at 30 km / h. An example phase error at 2 GHz may be 160° at 3 km / h, 533° at 10 km / h and 1600° at 30 km / h.

[0122] Example 900 also shows that each TRP may have a corresponding oscillator. Although the TRPs attempt to operate synchronously between the TRPs, because the TRPs operate through separate oscillators, the oscillator rate of TRP B may be slightly different from the oscillator rate of TRP A. This difference may be referred to as "oscillator drift." Example 900 shows oscillator drift 906 that may occur at TRP B relative to TRP A. If there are more than two TRPs, there may be multiple oscillator drifts.

[0123] UE 120 may experience Doppler frequency shift and / or oscillator drift. The Doppler effect can be caused by Doppler: The oscillator (XO) drift can be expressed as follows: f XOerr =ef cThe value e = 0.05 parts per million may be equivalent to v = 54 km / h, and e = 1 part per billion may be equivalent to v = 1.08 km / h. For the worst case scenario with two TRPs, the effect can be calculated by ±f D or XOerr to double. The oscillator drift may be TRP pair specific, while the Doppler shift may also be UE specific. On the UE side, the Doppler shift and the oscillator drift of the TRP may be compounded, and the UE 120 may not be able to distinguish between the drift and the frequency shift. If the UE 120 sends a CSI report and the network is unaware of such frequency shift and drift, the network may utilize inaccurate CSI reports. Therefore, the scheduling and transmission of PDSCH communications based on the CSI reports may not be optimal, and the communication may be degraded. The degraded communication wastes power and signaling resources.

[0124] As indicated above, Fig. 9 are provided as examples. Other examples can be found in the Fig. 9 The examples described are different.

[0125] According to various aspects described herein, a UE may indicate the performance of a CSI report. The performance may include a confidence level or an accuracy level of the CSI report. The CSI report may be associated with a validity timer during which the performance is valid (e.g., achieving a minimum confidence level, a minimum accuracy level, or a minimum block error rate (BLER)). In some aspects, the UE may indicate a phase compensation (per time unit) that may be applied to a predecoder to compensate for one or more Doppler shifts and / or one or more oscillator drifts. The time unit may be a symbol, a time slot, a sub-time slot, a time duration, or another time unit. The total phase compensation may be a phase compensation per time unit multiplied by the number of time units. The predecoder for one or more TRPs may be compensated relative to a reference TRP. By indicating the performance of a CSI report or how to compensate for a CSI report for Doppler and oscillator drift, the network may utilize a more accurate CSI report. Accurate CSI reporting improves PDSCH communications, which saves power and processing resources.

[0126] Fig.10 1 is a diagram illustrating an example 1000 of indicating the performance of CSI reporting according to the present disclosure. Example 1000 shows a network entity 1010 (e.g., base station 110) and a UE 1020 (e.g., UE 120) that can communicate with each other via a wireless network (e.g., wireless network 100). Network entity 1010 can control or operate with one or more TRPs.

[0127] Example 1000 illustrates a process of indicating performance of a CSI report. As indicated by reference numeral 1025, the UE 1020 may generate an indication of performance of the CSI report, which indicates whether the CSI report meets a threshold confidence level or accuracy level. The indication of performance may include a measure (e.g., percentage, value) of confidence or accuracy.

[0128] As indicated by reference numeral 1030, the UE 1020 may send an indication. The indication may be sent in association with the CSI report, which may include sending in the CSI report, with the CSI report, or in a message separate from but associated with the CSI report.

[0129] In some aspects, the UE 1020 may use a validity timer during which performance is applicable. The validity timer may be a time duration during which the UE 1020 ensures performance of the CSI report or the precoder (indicated by the PMI) in the CSI report. After expiration of the time duration or validity timer, the UE 1020 may not ensure performance of the CSI report.

[0130] In some aspects, the timer value (e.g., number of time slots or OFDM symbols, time duration, value range) of the validity timer may be predefined (in stored configuration information) or configured by the network. The timer value may be based at least in part on the number of configured TRPs (N). TRP ). A greater number of TRPs may be more likely to have a greater relative Doppler shift (ie, a greater effective total Doppler spread). The timer value may be based at least in part on the particular TRP selected.

[0131] In some aspects, the timer value may be based at least in part on the carrier frequency f c (because ), subcarrier spacing (SCS), or a combination thereof. The absolute timer value (e.g., in ms) may vary with f c And decrease.

[0132] In some aspects, the UE 1020 may send an indication of a timer value for the validity timer. The indication of the timer value may be included with the CSI report (e.g., with the PMI). The indication may be an explicit value and may be based at least in part on UE measurements. The explicit value may be a range of values ​​associated with a plurality of thresholds (e.g., thr1, thr2, ...). An index may be used to indicate a fixed value, a low value (e.g., less than thr1), an intermediate value (e.g., between thr1 and thr2), and a high value (e.g., greater than thr2). Such values ​​are shown in Table 1.

[0133] index Time changes 00 still 01 Low (0<timer value≤thr1) 10 Medium (thr1<timer value≤thr2) 11 High (timer value > thr2)

[0134] Table 1

[0135] In some aspects, the UE 1020 may implicitly indicate a timer value for the validity timer, where the timer value corresponds to the TRP selection. For example, there may be a list of configured timer values ​​based at least in part on the number of TRPs. The UE 1020 may report the selected N<=N TRP TRPs, and N may correspond to a timer value. Network entity 1010 may determine a validity timer or a value of a validity timer based at least in part on the TRP selection. A particular value may correspond to a particular number of TRPs or a particular combination of TRPs.

[0136] Example 1000 illustrates possible timer values ​​for a validity timer. In some aspects, the validity timer may be set at a CSI reference resource (n CSI_ref ), which can be defined for validation tests (e.g., target BLER 10%) with reported CQI (and PMI, if also reported). The frequency resource can be the same resource as the CSI-RS measured in the frequency domain. The time resource can be the valid downlink time slot nn CSI_ref (before the uplink timeslot n in which CSI is reported). For periodic or semi-periodic reporting, n CSI_ref Can be greater than or equal to (single CSI-RS) or greater than or equal to The minimum value of (multiple CSI-RS) makes the time slot nn CSI_ref Corresponds to the valid downlink (DL) time slot. For aperiodic reporting, n CSI_ref Can be greater than or equal to The minimum value of time slot nn CSI_ref Corresponds to a valid DL time slot (where Z′ is the minimum processing timeline from CSI-RS to reporting physical uplink shared channel (PUSCH) communication). Alternatively, in some aspects, the validity timer may start at reporting time slot n. The validity timer may start at the beginning of time slot n or at the end of time slot n.

[0137] As indicated by reference numeral 1035, the network entity 1010 may send a PDSCH communication based at least in part on the indication. The sending based at least in part on the indication may include adjusting a parameter of the sending of the PDSCH communication based at least in part on the performance of the CSI report. The parameter may be a scheduled transmission time, a transmission power, or a combination thereof. If the performance of the CSI report meets a performance threshold (e.g., a minimum confidence level), the network entity 1010 may schedule the PDSCH communication. If the performance does not meet the performance threshold, the network entity 1010 may move the transmission time of the PDSCH communication or reduce the transmission power of the PDSCH communication. By indicating the performance of the CSI report, the UE 1020 may assist the network entity 1010 in more accurately utilizing the CSI and improving communications. The improved communication saves power, processing resources, and signaling resources.

[0138] As indicated above, Fig.10 are provided as examples. Other examples can be found in the Fig.10 The examples described are different.

[0139] Fig.11 is a diagram illustrating an example 1100 of phase compensation for CSI reporting according to the present disclosure.

[0140] In some aspects, the UE 1020 may assist the network entity 1010 in compensating the pre-decoder in the CSI report to count Doppler shift and / or oscillator drift for one or more TRPs. As shown in the reference numeral 1105, the UE 1020 may generate an indication of phase compensation per time unit (e.g., symbol, time slot, sub-time slot, time duration). Phase compensation may also be referred to as delta phi (ΔΦ) compensation. Phase compensation per time unit may be applied to one or more TRPs relative to a reference TRP. That is, the phase compensation per time unit may be based at least in part on a corresponding difference between the Doppler shift of the corresponding TRP and the reference TRP and / or a corresponding difference between the corresponding oscillator drift of the corresponding TRP relative to the reference TRP.

[0141] In one example, the reported (CSI reported) PMI may be for N TRPs with N-1 time domain (TD) compensation phase rotations Δφ n , n=2, ..., N (TRP 1 can be a reference TRP without TD phase compensation). For two TRPs (TRP1 and TRP 2), Δφ2=2π(f D2 -f D1 )t unit ,φ2=2π(f D2 -f D1 )(t1-t0)=lΔφ2, where f D1 、f D2is the Doppler shift measured for TRP 1 and TRP 2, respectively (e.g., via a tracking reference signal (TRS)), t1 is the time of a potential PDSCH transmission / reception (e.g., a specific symbol of the PDSCH), and t0 is the time of the CSI-RS measurement (at a CSI reference resource slot). The time instances of t0, t1, or t1-t0 shown in example 1100 may be at a symbol level or a slot level. That is, the pre-decoder in the CSI report may be based at least in part on t0 and t1.

[0142] In some aspects, the UE 1020 may generate an indication based at least in part on a compensation window (shown in example 1100) during which the UE 1020 and / or the network entity 1010 uses phase compensation per time unit. L may represent the compensation window size, which may be, for example, tens of time slots per ms. Using the pre-decoder series reported over time, The pre-decoder W for reference TRP 1 TRP#1 Without TD compensation (phase compensation), the compensated predecoder reported at a specific time unit l (e.g., symbol l) for TRP 2 is: W over time TRP#2 It can be: Where symbol 0 corresponds to time t0 and a particular symbol l corresponds to time t1, in the above equation φ2 = 2π(f D2 -f D1 )(t1-t0)=lΔφ2.

[0143] In some aspects, the backoff window may start (t0) at the CSI reference resource slot (at the beginning or end of the slot). In some aspects, the start t0 may be no later than the last symbol of the latest CSI-RS opportunity (of the TRP) of the CSI reference resource. If different TRPs have different last symbols of the latest CSI-RS opportunity, the UE 1020 may use the latest last symbol.

[0144] In some aspects, the size L of the backoff window may be based at least in part on the validity timer. For example, the backoff window may be less than or equal to the time duration of the validity timer. Fig.10The validity timer described may also be applied to example 1100. Doppler spread is the broadening of the spectrum of a narrowband signal transmitted over multiple paths. When UE 1020 is moving, Doppler spread occurs due to the different Doppler shift frequencies associated with the multiple paths. Doppler spread may still exist even if the relative Doppler shifts of all other TRPs relative to a reference TRP are eliminated. In some aspects, UE 1020 may send an indication of a validation timer (e.g., a timer value, a CSI window size) because the effective Doppler spread after compensation is the phase compensation (φ) reported by the UE. n (s)) confirmed.

[0145] In some aspects, the measurement of Doppler shift with respect to one or more TRPs may be based at least in part on one or more first bursts of a single-port CSI-RS, and the measurement of Doppler shift with a reference TRP may be based at least in part on a second burst of a single-port CSI-RS. Dn -f D1 ), in this case of TD compensated PMI reporting for multi-TRP CJT, the TRS for the TRP (or burst of single-port CSI-RS) may be configured with a normal multi-port CSI-RS for the TRP. The burst may be identified in the CSI report configuration (e.g., nzp-CSI-RS-ResourceSetList in CSI-RereportConfig). The CSI report configuration may indicate a multi-port CSI-RS set 1 (TRP 1) for a single resource, a multi-port CSI-RS set 2 (TRP 2) for a single resource, TRS1 (TRP 1) for a burst of single-port CSI-RS, and / or TRS2 (TRP 2) for a burst of single-port CSI-RS.

[0146] In some aspects, a phase compensation per time unit is utilized to compensate a precoder in a CSI report for one or more TRPs. The reported phase compensation per time unit may be based at least in part on the Doppler shift f Dn The Doppler resolution of (for N TRPs, n=1, ..., N) and thus based on the relative Doppler shift f Dn -f D1 The resolution of phase compensation per time unit may be reported as a UE capability. The UE 1020 may send an indication of the UE capability for using phase compensation or an indication of phase compensation.

[0147] In some aspects, the PDSCH communication may include a DMRS. The PDSCH DMRS may be QCL to the TCI state of the TRS / CSI-RS of the reference TRP. The QCL TCI state may be applicable when the PDSCH communication is configured with explicit parameters by RRC (e.g., cjtSchemePdsch is configured) to distinguish the phase coherence characteristics between CSI-RS measurement (and providing CSI reports) and receiving PDSCH communications. For example, the UE 1020 may receive the PDSCH scheme parameters and receive the PDSCH DMRS using the QCL TCI state of the TRS or CSI-RS of the reference TRP based at least in part on the PDSCH scheme parameters.

[0148] In some aspects, for single Doppler QCL, the PDSCH DMRS may be QCLed to the TCI state of the TRS / CSI-RS of all TRPs, but the Doppler shift (or with Doppler spread) of TRPs other than the reference TRP becomes invalid. For example, the UE 1020 may receive PDSCH scheme parameters and receive the PDSCH DMRS using the QCL TCI state of the TRS or CSI-RS of one or more TRPs based at least in part on the PDSCH scheme parameters. The UE 1020 may avoid using Doppler shift or Doppler spread measurements for one or more TRPs.

[0149] As indicated by reference numeral 1110, the UE 1030 may send an indication of phase compensation per time unit in association with the CSI report. As indicated by reference numeral 1115, the network entity 1010 may compensate the predecoder in the CSI report for one or more TRPs using the phase compensation per time unit for a certain number of time units. As indicated by reference numeral 1120, the network entity 1010 may send a PDSCH communication (e.g., using the compensated predecoder) based at least in part on the indication. By indicating how the CSI report will be compensated in the time domain (e.g., phase) due to Doppler shift, Doppler spread, and / or oscillator drift, the UE 1020 may assist the network entity 1010 in utilizing more accurate CSI reports, which may improve communications and save power, processing resources, and signaling resources.

[0150] As indicated above, Fig.11 are provided as examples. Other examples can be found in the Fig.11 The examples described are different.

[0151] Fig.12 is a diagram illustrating an example process 1200, performed, for example, by a UE, according to the present disclosure. Example process 1200 is an example in which a UE (eg, UE 120, UE 1020) performs operations associated with CSI reporting or compensation of a precoder for CSI reporting.

[0152] like Fig.12 As shown in FIG. 1 , in some aspects, process 1200 may include generating an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP (block 1210). For example, a UE (e.g., using Fig.16 The communication manager 1608 and / or compensation component 1610 depicted in FIG. 1 may generate an indication of phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP, as described above.

[0153] like Fig.12 As further shown, in some aspects, process 1200 may include sending an indication in association with the CSI report (block 1220). Fig.16 The communication manager 1608 and / or the sending component 1604 depicted in FIG. 1 may send an indication in association with a CSI report, as described above.

[0154] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0155] In a first aspect, the phase compensation per time unit is based at least in part on a difference between one or more Doppler shifts about the one or more TRPs and a Doppler shift about the reference TRP, a difference between one or more oscillator drifts about the one or more TRPs and an oscillator drift about the reference TRP, or a combination thereof.

[0156] In a second aspect, alone or in combination with the first aspect, a pre-decoder in the CSI report is based at least in part on a time for measuring the CSI-RS and a time for receiving PDSCH communications.

[0157] In a third aspect, either alone or in combination with one or more of the first and second aspects, the measurement of the one or more Doppler shifts with respect to the one or more TRPs is based at least in part on one or more first bursts of a single-port CSI-RS, and the measurement of the Doppler shift with respect to the reference TRP is based at least in part on a second burst of a single-port CSI-RS.

[0158] In a fourth aspect, alone or in combination with one or more of the first to third aspects, generating the indication comprises generating the indication based at least in part on a compensation window for using the phase compensation per time unit.

[0159] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a size of the backoff window is based at least in part on a validity timer for the CSI report.

[0160] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, process 1200 includes one or more of: receiving a configuration of the validity timer or sending an indication of the validity timer.

[0161] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the start of the backoff window is based at least in part on a CSI reference resource slot.

[0162] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the start of the back-off window is based at least in part on a last symbol of a latest CSI reference signal opportunity.

[0163] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the phase compensation per time unit is utilized to compensate a pre-decoder in the CSI report for the one or more TRPs.

[0164] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, process 1200 includes receiving a PDSCH scheme parameter, and receiving a PDSCH DMRS using a QCL TCI state of a TRS or CSI-RS of the reference TRP based at least in part on the PDSCH scheme parameter.

[0165] In an eleventh aspect, either alone or in combination with one or more of aspects one to ten, process 1200 includes receiving PDSCH scheme parameters, receiving PDSCH DMRS using the QCL TCI state of the TRS or CSI-RS of the one or more TRPs based at least in part on the PDSCH scheme parameters, and avoiding using Doppler shift or Doppler spread measurements for the one or more TRPs.

[0166] although Fig.12 An example block diagram of process 1200 is shown, but in some aspects, process 1200 may include Fig.12 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1200. Additionally or alternatively, two or more blocks of the blocks of process 1200 may be performed in parallel.

[0167] Fig.13is a diagram illustrating an example process 1300, for example, performed by a network entity, according to the present disclosure. The example process 1300 is an example in which a network entity (eg, base station 110, network entity 1010) performs operations associated with compensating a precoder for CSI reporting.

[0168] like Fig.13 As shown in FIG. 1 , in some aspects, process 1300 may include receiving an indication of a phase compensation per time unit associated with a CSI report (e.g., a PMI in a CSI report) for one or more TRPs relative to a reference TRP (block 1310). For example, a network entity (e.g., using Fig.17 The communication manager 1708 and / or receiving component 1702 depicted in FIG. 1 may receive an indication of a phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP, as described above.

[0169] like Fig.13 As further shown in FIG. 1 , in some aspects, process 1300 may include sending a PDSCH communication based at least in part on the indication (block 1320). For example, a network entity (e.g., using Fig.17 The communication manager 1708 and / or the sending component 1704 depicted in FIG. 1 may send a PDSCH communication based at least in part on the indication, as described above.

[0170] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0171] In a first aspect, the phase compensation per time unit is based at least in part on a difference between one or more Doppler shifts about the one or more TRPs and a Doppler shift about the reference TRP, a difference between one or more oscillator drifts about the one or more TRPs and an oscillator drift about the reference TRP, or a combination thereof.

[0172] In a second aspect, alone or in combination with the first aspect, a precoder in the CSI report is based at least in part on a time used to measure a CSI reference signal and a time used to send the PDSCH communication.

[0173] In a third aspect, alone or in combination with one or more of the first and second aspects, sending the PDSCH communication includes using the phase compensation per time unit to compensate a pre-decoder in the CSI report for the one or more TRPs.

[0174] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 1300 includes sending an indication of a validity timer associated with a compensation window to which the phase compensation per time unit applies.

[0175] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 1300 includes sending PDSCH scheme parameters associated with the DMRS in the PDSCH communication using the QCL TCI state of the TRS or CSI-RS of the reference TRP or one of the one or more TRPs.

[0176] although Fig.13 Example blocks of process 1300 are shown, but in some aspects, process 1300 may include Fig.13 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1300. Additionally or alternatively, two or more blocks of the blocks of process 1300 may be performed in parallel.

[0177] Fig.14 14 is a diagram illustrating an example process 1400 performed, for example, by a UE according to the present disclosure. Example process 1400 is an example in which a UE (eg, UE 120, UE 1020) performs operations associated with indicating a CSI report or performance of a precoder of a CSI report.

[0178] like Fig.14 As shown, in some aspects, process 1400 may include generating an indication of the performance of the CSI report (block 1410). For example, a UE (e.g., using Fig.16 The communications manager 1608 and / or performance component 1612 depicted in FIG. 1 may generate an indication of the performance of the CSI report, as described above.

[0179] like Fig.14 As further shown, in some aspects, process 1400 may include sending an indication in association with the CSI report (block 1420). Fig.16 The communication manager 1608 and / or the sending component 1604 depicted in FIG. 1 may send an indication in association with a CSI report, as described above.

[0180] Process 1400 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.

[0181] In a first aspect, process 1400 includes using a validity timer during which the capability applies.

[0182] In a second aspect, alone or in combination with the first aspect, process 1400 includes receiving a configuration of the validity timer.

[0183] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication indicates a value of the validity timer.

[0184] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the value of the validity timer is associated with a TRP selection.

[0185] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the value of the validity timer is based at least in part on the carrier frequency, the SCS, or a combination thereof.

[0186] although Fig.14 Example blocks of process 1400 are shown, but in some aspects, process 1400 may include Fig.14 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1400. Additionally or alternatively, two or more blocks of the blocks of process 1400 may be performed in parallel.

[0187] Fig.15 is a diagram illustrating an example process 1500, performed, for example, by a network entity, in accordance with the present disclosure. Example process 1500 is an example in which a network entity (eg, base station 110, network entity 1010) performs operations associated with using performance indications for CSI reporting.

[0188] like Fig.15 As shown, in some aspects, process 1500 may include receiving an indication of performance of CSI reporting (block 1510). For example, a network entity (e.g., using Fig.17 The communication manager 1708 and / or receiving component 1702 depicted in FIG. 1 may receive an indication of the performance of the CSI report, as described above.

[0189] like Fig.15 As further shown, in some aspects, process 1500 may include sending a PDSCH communication based at least in part on the CSI report and an indication of the performance of the CSI report (block 1520). Fig.17 The communication manager 1708 and / or the transmitting component 1704 depicted in FIG. 1 may transmit a PDSCH communication based at least in part on the CSI report and the indication of the performance of the CSI report, as described above.

[0190] Process 1500 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.

[0191] In a first aspect, transmitting the PDSCH communication includes adjusting parameters of the transmission of the PDSCH communication based at least in part on the performance of the CSI report.

[0192] In a second aspect, alone or in combination with the first aspect, process 1500 includes sending configuration of a validity timer during which the capability is applicable.

[0193] In a third aspect, either alone or in combination with one or more of the first and second aspects, process 1500 includes receiving an indication of a validity timer during which the performance is applicable, or determining the validity timer based at least in part on TRP selection.

[0194] although Fig.15 Example blocks of process 1500 are shown, but in some aspects, process 1500 may include Fig.15 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1500. Additionally or alternatively, two or more blocks of the blocks of process 1500 may be performed in parallel.

[0195] Fig.16 1 is a diagram of an example apparatus 1600 for wireless communication according to the present disclosure. Apparatus 1600 may be a UE (e.g., UE 120, UE 1020), or a UE may include apparatus 1600. In some aspects, apparatus 1600 includes a receiving component 1602 and a transmitting component 1604, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1600 may communicate with another apparatus 1606 (such as a UE, a base station, or another wireless communication device) using receiving component 1602 and transmitting component 1604. As further shown, apparatus 1600 may include a communication manager 1608. Communication manager 1608 may control and / or otherwise manage one or more operations of receiving component 1602 and / or transmitting component 1604. In some aspects, communication manager 1608 may include a communication manager 1608 in conjunction with Figure 2 One or more antennas, modems, controllers / processors, memories, or combinations thereof of the UE described herein. The communication manager 1608 may be or be similar to Figure 1 and Figure 2For example, in some aspects, the communication manager 1608 may be configured to perform one or more of the functions described as being performed by the communication manager 140. In some aspects, the communication manager 1608 may include a receiving component 1602 and / or a sending component 1604. The communication manager 1608 may include a compensation component 1610 and / or a performance component 1612, among others.

[0196] In some aspects, the apparatus 1600 may be configured to perform Figures 1 to 11 Additionally or alternatively, the apparatus 1600 may be configured to perform one or more processes described herein, such as Fig.12 The process 1200 Fig.14 In some aspects, Fig.16 The device 1600 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Fig.16 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in a 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 codes 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.

[0197] The receiving component 1602 may receive communications from the device 1606, such as reference signals, control information, data communications, or a combination thereof. The receiving component 1602 may provide the received communications to one or more other components of the device 1600. In some aspects, the receiving component 1602 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 1600. In some aspects, the receiving component 1602 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0198] Transmit component 1604 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1606. In some aspects, one or more other components of device 1600 may generate communications and may provide the generated communications to transmit component 1604 for transmission to device 1606. In some aspects, transmit component 1604 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1606. In some aspects, transmit component 1604 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 1604 can be co-located with the receive component 1602 in a transceiver.

[0199] In some aspects, compensation component 1610 may generate an indication of phase compensation per time unit associated with a CSI report for one or more TRPs relative to a reference TRP.Sending component 1604 may send the indication in association with the CSI report.

[0200] The receiving component 1602 may receive the PDSCH scheme parameters. The receiving component 1602 may receive the PDSCH DMRS using the QCL TCI state of the TRS or CSI-RS of the reference TRP based at least in part on the PDSCH scheme parameters. The receiving component 1602 may receive the PDSCH DMRS using the QCL TCI state of the TRS or CSI-RS of one or more TRPs based at least in part on the PDSCH scheme parameters. The compensation component 1610 may avoid using Doppler shift or Doppler spread measurements for one or more TRPs.

[0201] In some aspects, performance component 1612 may generate an indication of performance of the CSI report.Sending component 1604 may send the indication in association with the CSI report.

[0202] The performance component 1612 can use a validity timer during which the performance is applicable. The receiving component 1602 can receive a configuration of the validity timer.

[0203] Fig.16 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.16 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.16 Two or more components shown may be implemented in a single component, or Fig.16 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.16 The illustrated set (one or more) of components may be described as being executable by Fig.16 Another group of components shown performs one or more functions.

[0204] Fig.17 1700 is a diagram of an example apparatus 1700 for wireless communication according to the present disclosure. Apparatus 1700 may be a network entity (e.g., base station 110, network entity 1010), or a network entity may include apparatus 1700. In some aspects, apparatus 1700 includes a receiving component 1702 and a sending component 1704, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1700 may communicate with another apparatus 1706 (such as a UE, a base station, or another wireless communication device) using receiving component 1702 and sending component 1704. As further shown, apparatus 1700 may include a communication manager 1708. Communication manager 1708 may control and / or otherwise manage one or more operations of receiving component 1702 and / or sending component 1704. In some aspects, communication manager 1708 may include a communication manager 1708 in conjunction with Figure 2 One or more antennas, modems, controllers / processors, memories, or combinations thereof of the network entities described. The communication manager 1708 may be or be similar to Figure 1 and Figure 2 For example, in some aspects, the communication manager 1708 can be configured to perform one or more of the functions described as being performed by the communication manager 1708. In some aspects, the communication manager 1708 can include a receiving component 1702 and / or a sending component 1704. The communication manager 1708 can include an adjustment component 1710, among others.

[0205] In some aspects, the apparatus 1700 may be configured to perform Figures 1 to 11 Additionally or alternatively, the apparatus 1700 may be configured to perform one or more of the processes described herein, such as Fig.13 Process 1300, Fig.15 In some aspects, Fig.17 The apparatus 1700 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 Additionally or alternatively, Fig.17 One or more of the components shown may be combined with Figure 2Additionally or alternatively, one or more components in a 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 codes 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.

[0206] The receiving component 1702 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1706. The receiving component 1702 may provide the received communications to one or more other components of the device 1700. In some aspects, the receiving component 1702 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 1700. In some aspects, the receiving component 1702 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described network entities.

[0207] The transmitting component 1704 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1706. In some aspects, one or more other components of the device 1700 may generate communications and may provide the generated communications to the transmitting component 1704 for transmission to the device 1706. In some aspects, the transmitting component 1704 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 1706. In some aspects, the transmitting component 1704 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 network entities. In some aspects, the transmit component 1704 can be co-located with the receive component 1702 in a transceiver.

[0208] In some aspects, receiving component 1702 may receive an indication of phase compensation per time unit associated with CSI reporting for one or more TRPs relative to a reference TRP. Transmitting component 1704 may transmit a PDSCH communication based at least in part on the indication.

[0209] The transmitting component 1704 may transmit an indication of a validity timer associated with a compensation window to which the phase compensation per time unit is applied. The transmitting component 1704 may transmit PDSCH scheme parameters associated with the DMRS in a PDSCH communication using a QCL TCI state of a TRS or CSI-RS of a reference TRP or one of the one or more TRPs.

[0210] In some aspects, receiving component 1702 may receive an indication of performance of the CSI report.Transmitting component 1704 may transmit a PDSCH communication based at least in part on the CSI report and the indication of performance of the CSI report.

[0211] Transmitting component 1704 can transmit a configuration of a validity timer during which the performance is applicable. Receiving component 1702 can receive an indication of a validity timer during which the performance is applicable. Adjusting component 1710 can determine a validity timer based at least in part on a TRP selection.

[0212] Fig.17 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.17 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.17 Two or more components shown may be implemented in a single component, or Fig.17 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.17 The illustrated set (one or more) of components may be described as being executable by Fig.17 Another group of components shown performs one or more functions.

[0213] The following provides an overview of some aspects of the disclosure:

[0214] Aspect 1: A method of wireless communication performed by a user equipment (UE), the method comprising: generating an indication of phase compensation per time unit associated with a channel state information (CSI) report for one or more TRPs relative to a reference transmit receive point (TRP); and sending the indication in association with the CSI report.

[0215] Aspect 2: A method according to Aspect 1, wherein the phase compensation per time unit is based at least in part on the difference between one or more Doppler shifts with respect to the one or more TRPs and the Doppler shift with respect to the reference TRP, the difference between one or more oscillator drifts with respect to the one or more TRPs and the oscillator drift with respect to the reference TRP, or a combination thereof.

[0216] Aspect 3: The method of aspect 2, wherein the pre-decoder in the CSI report is based at least in part on a time for measuring a CSI reference signal and a time for receiving a physical downlink shared channel communication.

[0217] Aspect 4: A method according to Aspect 2 or 3, wherein the measurement of the one or more Doppler frequency shifts with respect to the one or more TRPs is at least partially based on one or more first bursts of a single-port CSI reference signal (CSI-RS), and the measurement of the Doppler frequency shift with respect to the reference TRP is at least partially based on a second burst of a single-port CSI-RS.

[0218] Aspect 5: The method according to any one of aspects 1 to 4, wherein generating the indication comprises generating the indication based at least in part on a compensation window for using the phase compensation per time unit.

[0219] Aspect 6: The method according to aspect 5, wherein the size of the backoff window is based at least in part on a validity timer for the CSI report.

[0220] Aspect 7: The method according to aspect 6 further comprises one or more of the following: receiving configuration of the validity timer or sending an indication of the validity timer.

[0221] Aspect 8: The method according to aspect 5, wherein the start of the backoff window is based at least in part on a CSI reference resource slot.

[0222] Aspect 9: The method of aspect 5, wherein the start of the compensation window is based at least in part on a last symbol of a latest CSI reference signal opportunity.

[0223] Aspect 10: A method according to any one of Aspects 1 to 9, wherein the phase compensation per time unit is used to compensate the pre-decoder in the CSI report for the one or more TRPs.

[0224] Aspect 11: According to the method described in any one of Aspects 1 to 10, the method further includes: receiving physical downlink shared channel (PDSCH) scheme parameters; and receiving a PDSCH demodulation reference signal using a quasi-co-site transmission configuration indicator state of a tracking reference signal or a CSI reference signal of the reference TRP based at least in part on the PDSCH scheme parameters.

[0225] Aspect 12: According to the method described in any one of Aspects 1 to 10, the method further includes: receiving physical downlink shared channel (PDSCH) scheme parameters; receiving a PDSCH demodulation reference signal using a quasi-co-site transmission configuration indicator state of a tracking reference signal or a CSI reference signal of the one or more TRPs based at least in part on the PDSCH scheme parameters; and avoiding using Doppler shift or Doppler spread measurements for the one or more TRPs.

[0226] Aspect 13: A method of wireless communication performed by a network entity, the method comprising: receiving an indication of phase compensation per time unit associated with a channel state information (CSI) report for one or more TRPs relative to a reference transmit receive point (TRP); and sending a physical downlink shared channel (PDSCH) communication based at least in part on the indication.

[0227] Aspect 14: A method according to Aspect 13, wherein the phase compensation per time unit is based at least in part on the difference between one or more Doppler shifts with respect to the one or more TRPs and the Doppler shift with respect to the reference TRP, the difference between one or more oscillator drifts with respect to the one or more TRPs and the oscillator drift with respect to the reference TRP, or a combination thereof.

[0228] Aspect 15: The method according to aspect 13 or 14, wherein the precoder in the CSI report is based at least in part on the time used to measure the CSI reference signal and the time used to send the PDSCH communication.

[0229] Aspect 16: A method according to any one of Aspects 13 to 15, wherein sending the PDSCH communication includes using the phase compensation per time unit to compensate for a predecoder in the CSI report for the one or more TRPs.

[0230] Aspect 17: The method according to aspect 16, the method further comprising sending an indication of a validity timer associated with a compensation window to which the phase compensation per time unit applies.

[0231] Aspect 18: According to the method described in any one of Aspects 13 to 17, the method further includes sending PDSCH scheme parameters associated with the demodulation reference signal in the PDSCH communication using a quasi-co-location transmission configuration indicator state of a tracking reference signal or a CSI reference signal of the reference TRP or one of the one or more TRPs.

[0232] Aspect 19: A method of wireless communication performed by a user equipment (UE), the method comprising: generating an indication of performance of a channel state information (CSI) report; and sending the indication in association with the CSI report.

[0233] Aspect 20: The method according to aspect 19, further comprising using a validity timer, during which the performance is applicable.

[0234] Aspect 21: The method according to aspect 20 further comprises receiving a configuration of the validity timer.

[0235] Aspect 22: The method according to aspect 20 or 21, wherein the indication indicates the value of the validity timer.

[0236] Aspect 23: A method according to any one of Aspects 20 to 22, wherein the value of the validity timer is associated with TRP selection.

[0237] Aspect 24: A method according to any one of aspects 20 to 23, wherein the value of the validity timer is based at least in part on carrier frequency, subcarrier spacing, or a combination thereof.

[0238] Aspect 25: A method of wireless communication performed by a network entity, the method comprising: receiving an indication of the performance of a channel state information (CSI) report; and sending a physical downlink shared channel (PDSCH) communication based at least in part on the CSI report and the indication of the performance of the CSI report.

[0239] Aspect 26: The method of aspect 25, wherein transmitting the PDSCH communication comprises adjusting parameters of the transmission of the PDSCH communication based at least in part on the performance of the CSI report.

[0240] Aspect 27: The method according to aspect 25 or 26, the method further comprising sending a configuration of a validity timer, during which the performance is applicable.

[0241] Aspect 28: The method according to any one of Aspects 25 to 27, further comprising: receiving an indication of a validity timer during which the performance is applicable, or determining the validity timer at least in part based on TRP selection.

[0242] Aspect 29: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 28.

[0243] Aspect 30: A device for wireless communication, the device comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 28.

[0244] Aspect 31: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 28.

[0245] Aspect 32: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 28.

[0246] Aspect 33: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 28.

[0247] 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 these aspects.

[0248] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of 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, executables, threads of execution, processes and / or functions, etc. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by different forms of hardware and / or a combination of 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 to specific software codes to describe the operation and behavior of the systems and / or methods herein, because those skilled in the art will understand that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0249] 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, or not equal to a threshold, etc., depending on the context.

[0250] 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 that is not specifically set forth in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0251] Any element, action or instruction used herein should not be interpreted as key or necessary unless clearly described as such. In addition, as used herein, the articles "one" and "a kind of" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "group" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms are used. Moreover, as used herein, the term "having" etc. is intended to be an open term, which does not limit the elements they modify (for example, "having" A elements can also have B). In addition, the phrase "based on" is intended to mean "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 expressly 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; as well as one or more processors coupled to the memory and configured to: generating an indication of a phase compensation per time unit associated with a channel state information (CSI) report for one or more TRPs relative to a reference transmit reception point (TRP); and The indication is sent in association with the CSI report.

2. The UE of claim 1, wherein the phase compensation per time unit is based at least in part on a difference between one or more Doppler shifts with respect to the one or more TRPs and a Doppler shift with respect to the reference TRP, a difference between one or more oscillator drifts with respect to the one or more TRPs and an oscillator drift with respect to the reference TRP, or a combination thereof.

3. The UE of claim 2, wherein a precoder in the CSI report is based at least in part on a time for measuring a CSI reference signal and a time for receiving a physical downlink shared channel communication.

4. A UE according to claim 2, wherein the measurement of the one or more Doppler frequency shifts with respect to the one or more TRPs is at least partially based on one or more first bursts of a single-port CSI reference signal (CSI-RS), and the measurement of the Doppler frequency shift with respect to the reference TRP is at least partially based on a second burst of a single-port CSI-RS. 5 . The UE of claim 1 , wherein to generate the indication, the one or more processors are configured to generate the indication based at least in part on a compensation window for using the phase compensation per time unit.

6. The UE of claim 5, wherein a size of the backoff window is based at least in part on a validity timer for the CSI report.

7. The UE of claim 6, wherein the one or more processors are configured to do one or more of: receive a configuration of the validity timer or send an indication of the validity timer.

8. The UE of claim 5, wherein a start of the backoff window is based at least in part on a CSI reference resource slot.

9. The UE of claim 5, wherein a start of the backoff window is based at least in part on a last symbol of a latest CSI reference signal opportunity.

10. The UE of claim 1, wherein the phase compensation per time unit is utilized to compensate a pre-decoder in the CSI report for the one or more TRPs.

11. The UE of claim 1 , wherein the one or more processors are configured to: receiving a physical downlink shared channel (PDSCH) scheme parameter; and A PDSCH demodulation reference signal is received based at least in part on the PDSCH scheme parameters using a tracking reference signal of the reference TRP or a quasi co-site transmission configuration indicator state of a CSI reference signal.

12. The UE of claim 1, wherein the one or more processors are configured to: receiving a physical downlink shared channel (PDSCH) scheme parameter; receiving a PDSCH demodulation reference signal using a quasi co-located transmission configuration indicator state of a tracking reference signal or a CSI reference signal of the one or more TRPs based at least in part on the PDSCH scheme parameter; and Avoid using Doppler shift or Doppler spread measurements for the one or more TRPs.

13. A network entity for wireless communication, the network entity comprising: Memory; as well as one or more processors coupled to the memory and configured to: receiving an indication of a phase compensation per time unit associated with a channel state information (CSI) report for one or more TRPs relative to a reference transmit-receive point (TRP); and A physical downlink shared channel (PDSCH) communication is sent based at least in part on the indication.

14. A network entity according to claim 13, wherein the phase compensation per time unit is based at least in part on a difference between one or more Doppler shifts with respect to the one or more TRPs and a Doppler shift with respect to the reference TRP, a difference between one or more oscillator drifts with respect to the one or more TRPs and an oscillator drift with respect to the reference TRP, or a combination thereof.

15. The network entity of claim 13, wherein a precoder in the CSI report is based at least in part on a time used to measure a CSI reference signal and a time used to send the PDSCH communication.

16. The network entity of claim 13, wherein to send the PDSCH communication, the one or more processors are configured to compensate a pre-decoder in the CSI report for the one or more TRPs using the phase compensation per time unit.

17. The network entity of claim 16, wherein the one or more processors are configured to send an indication of a validity timer associated with a compensation window to which the phase compensation per time unit applies.

18. A network entity according to claim 13, wherein the one or more processors are configured to use a quasi-co-location transmission configuration indicator state of a tracking reference signal or a CSI reference signal of the reference TRP or one of the one or more TRPs to send PDSCH scheme parameters associated with a demodulation reference signal in the PDSCH communication.

19. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: Memory; as well as one or more processors coupled to the memory and configured to: generating an indication of performance of a channel state information (CSI) report; and The indication is sent in association with the CSI report.

20. The UE of claim 19, wherein the one or more processors are configured to use a validity timer during which the capability is applicable.

21. The UE of claim 20, wherein the one or more processors are configured to receive a configuration of the validity timer.

22. The UE of claim 20, wherein the indication indicates a value of the validity timer.

23. The UE of claim 20, wherein the value of the validity timer is associated with TRP selection.

24. The UE of claim 20, wherein a value of the validity timer is based at least in part on a carrier frequency, a subcarrier spacing, or a combination thereof.

25. A network entity for wireless communication, the network entity comprising: Memory; as well as one or more processors coupled to the memory and configured to: receiving an indication of performance of a channel state information (CSI) report; and A physical downlink shared channel (PDSCH) communication is transmitted based at least in part on the CSI report and the indication of the performance of the CSI report.

26. The network entity of claim 25, wherein to transmit the PDSCH communication, the one or more processors are configured to adjust parameters of transmission of the PDSCH communication based at least in part on the performance of the CSI report.

27. The network entity of claim 25, wherein the one or more processors are configured to send a configuration of a validity timer during which the capability is applicable.

28. The network entity of claim 25, wherein the one or more processors are configured to: receiving an indication of a validity timer during which the capability is applicable, or The validity timer is determined based at least in part on the TRP selection.

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