Time-invariant and time-varying partitioning for doppler channel state information

Abstract

Various aspects of the present disclosure generally relate to wireless communications. For example, time-varying channel state information (CSI) content may be associated with group 2 of CSI portion 2, such that the time-varying CSI content may be first omitted from CSI portion 2. Some aspects are more particularly directed to associating content related to Doppler domain base selection, coefficient quantization associated with Doppler domain bases having an index greater than zero, and / or a non-zero coefficient selection bitmap, and / or content related to channel quality indicators for slots in a CSI window other than a first slot, with CSI Part 2, Group 2. Thus, the time-varying CSI content associated with group 2 of CSI part 2 may be finally packed and / or first omitted in the event that an uplink resource allocation for CSI part 2 is insufficient for all of the CSI content extrapolated by the UE for the CSI window.

Description

Technical Field

[0001] All aspects of this disclosure relate to wireless communication in general, and more specifically to techniques and apparatus associated with time-invariant and time-varying segmentation for Doppler channel state information (CSI). Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access radio access technologies (RATs) capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth or transmit power). Examples of such multiple access RATs 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0003] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different wireless communication devices to communicate at the city, national, regional, or global levels. An example telecommunications standard is New Radio (NR). NR (also known as 5G) is part of the Continuous Mobile Broadband Evolution (CMBE) program issued by 3GPP. NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink, and CP-OFDM or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. As the demand for mobile broadband access continues to grow, further improvements to NR are possible, and other radio access technologies, such as 6G, can be introduced to further advance mobile broadband evolution.

[0004] User equipment (UE) can report channel state information (CSI) feedback associated with the channel between the UE and the network node. For example, a characteristic of 5G systems is the use of MIMO transmission schemes to achieve high system throughput compared to previous generations of mobile systems. MIMO transmission typically requires the availability of accurate CSI at the network node to perform signal pre-decoding using pre-decoding matrices for data and control information. The complex framework for CSI reporting can be defined, for example, by wireless communication standards such as 3GPP. In the first step, CSI is obtained at the UE based on the CSI reference signal (CSI-RS) received from the network node. In the second step, the UE can determine the pre-decoding matrix (e.g., based on the estimated channel matrix) from a predefined set of matrices called a "codebook". The selected pre-decoding matrix is ​​reported by the UE (e.g., in CSI reporting) in the third step in the form of a pre-decoding matrix indicator (PMI) and a rank indicator (RI).

[0005] In some examples where uplink resource allocation (e.g., Physical Uplink Shared Channel (PUSCH) resource allocation) is insufficient to carry the full content of a CSI report, the UE may discard portions of one or more CSI reports. This scenario can occur when a network node does not accurately allocate PUSCH resources when scheduling one or more CSI reports. In such examples, the UE may discard portions of the CSI, such as information associated with one or more CSI reports (this may be referred to as uplink control information (UCI) omission or CSI omission). For example, the UE may transmit a UCI carrying one or more CSI reports via uplink resource allocation. UCI omission can be achieved by breaking down the content of the CSI report into groups associated with different priority levels. Each priority level can be associated with a group of CSI reports. The UE may discard information associated with one or more groups with lower priorities, such that the total payload size of the UCI (e.g., including one or more CSI reports) is suitable for the uplink resource allocation (e.g., PUSCH resource allocation) for the UCI. For example, the UCI packing order (e.g., the order in which information will be included in a given CSI report) or the UCI omission order (e.g., the order in which information associated with all CSI reports to be included in UCI transmission will be discarded) can be defined by the priority level of the corresponding group associated with one or more CSI reports.

[0006] In some examples, the UE is capable of moving at medium or high speeds. In such examples, the channel conditions associated with the UE can change rapidly over time. Therefore, the pre-decoding matrix associated with the channel and the UE can change rapidly over time. To handle the changing pre-decoding matrix, a time-domain basis codebook can be used by the UE to report CSI (e.g., for reporting PMI). For example, in addition to the frequency-domain basis and spatial-domain basis, the pre-decoding matrix associated with the CSI report can be associated with a time-domain basis. The introduction of a time-domain basis codebook (or Doppler-domain basis codebook) can provide useful CSI information (e.g., PMI) in medium-speed or high-speed scenarios. For example, because the UE can include the time-domain basis and coefficients (e.g., the non-zero coefficients (NZC) of the coefficient matrix of the time-domain basis codebook) in the CSI report sent to the network node, the network node can predict the CSI or pre-decoding matrix of one or more future time slots based on the extrapolated time-domain basis and coefficients indicated by the UE. This can improve communication performance in medium-speed or high-speed scenarios where the channel conditions associated with the UE may change rapidly.

[0007] In some examples, the UE may perform UCI omitting based on the UCI packing order or the UCI omitting order (e.g., defined by the priority level of the corresponding group associated with the CSI report, as described above). However, in some cases, the UCI omitting order may cause the UE to include coefficients associated with the Doppler domain base having an index of 0 and omit coefficients associated with the Doppler domain base having an index greater than 0. In such cases, when the network node receives only coefficients associated with the Doppler domain base having an index of 0 due to the UCI omitting order, these coefficients are generally considered time-invariant (similar to the old-style CSI which is considered constant over time). Therefore, in such cases, including time-varying or otherwise time-domain-specific elements in CSI section 2 (such as extrapolation or prediction pre-decoders associated with future time windows) may result in unnecessary overhead. Summary of the Invention

[0008] Some aspects described herein relate to a user equipment (UE) for wireless communication. The UE may include at least one memory and at least one processor coupled to the at least one memory. The at least one processor is operable to cause the UE to receive CSI-RS at each of a plurality of Channel State Information (CSI) Reference Signal (CSI-RS) times. The at least one processor is operable to cause the UE to send a CSI report to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-varying CSI content types, and the CSI report omits at least a portion of second CSI content associated with measurements in the plurality of CSI-RS times and with one or more time-varying CSI content types, in association with one or more omission rules associated with the CSI report.

[0009] Some aspects described herein relate to a method for wireless communication performed by a UE. The method may include: receiving a CSI-RS in each of a plurality of CSI-RS times. The method may include: sending a CSI report to a network node that is associated with a measurement in the plurality of CSI-RS times and with one or more time-invariant CSI content types, and the CSI report omitting at least a portion of a second CSI content associated with the measurement in the plurality of CSI-RS times and with one or more time-varying CSI content types, in association with one or more omission rules associated with the CSI report.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. When executed by one or more processors of the UE, the set of instructions enables the UE to receive CSI-RS at each of a plurality of CSI-RS times. When executed by one or more processors of the UE, the set of instructions enables the UE to send to a network node a CSI report associated with measurements in the plurality of CSI-RS times and associated with one or more time-varying CSI content types, and the CSI report omits at least a portion of second CSI content associated with measurements in the plurality of CSI-RS times and associated with one or more time-varying CSI content types, in association with one or more omission rules associated with the CSI report.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for receiving CSI-RS in each of a plurality of CSI-RS times. The apparatus may include components for transmitting to a network node a CSI report associated with a measurement in the plurality of CSI-RS times and associated with one or more time-varying CSI content types, wherein the CSI report omits at least a portion of second CSI content associated with the measurement in the plurality of CSI-RS times and associated with one or more time-varying CSI content types, in association with one or more omission rules associated with the CSI report.

[0012] The entirety of the terms includes, as fully described with reference to the accompanying drawings and description, and as illustrated in the accompanying drawings and description, methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network nodes, network entities, wireless communication devices, or processing systems.

[0013] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily utilized as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics (both in their organization and operation) of the concepts disclosed herein, as well as their associated advantages, will be better understood in conjunction with the accompanying drawings, based on the following description. Each figure in the accompanying drawings is provided for illustrative and descriptive purposes and not as a limitation of the definitions in the claims. Attached Figure Description

[0014] To gain a full understanding of the foregoing features of this disclosure, a more detailed 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 drawings illustrate only some typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. The same reference numerals in different drawings may identify the same or similar elements.

[0015] Figure 1 This is a diagram illustrating an example of a wireless network according to the present disclosure.

[0016] Figure 2 This is a diagram illustrating communication between an example network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0017] Figures 3A to 3C This is a diagram illustrating an example of a codebook structure that can be used to report Doppler channel state information (CSI) according to this disclosure.

[0018] Figure 4 This is a diagram illustrating an example of a CSI window in the time domain according to this disclosure.

[0019] Figure 5 This is a diagram illustrating an example of CSI packaging and priority sorting according to this disclosure.

[0020] Figure 6 This is a diagram illustrating an example of priority ordering for a coefficient matrix according to this disclosure.

[0021] Figures 7A to 7C This is a diagram illustrating examples of time-invariant and time-varying segmentation for Doppler CSI according to this disclosure.

[0022] Figure 8 This is a flowchart illustrating an example procedure performed by a UE, for example, to support time-invariant and time-varying segmentation for Doppler CSI, according to this disclosure.

[0023] Figure 9 This is a diagram of an example device for wireless communication that supports time-invariant and time-varying segmentation for Doppler CSI. Detailed Implementation

[0024] Various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of protection of this disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods practiced using structures, functionalities, or structures and functionalities other than or different from the various aspects of the disclosure set forth herein. Any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0025] Various devices and techniques will now be used to illustrate several aspects of a telecommunications system. These devices and techniques will be described in detail below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively, “elements”). These elements may be implemented using hardware, software, or a combination of hardware and software. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0026] Various aspects as a whole involve associating time-domain-dependent CSI content (e.g., time-varying channel state information (CSI)) and / or time-domain-independent CSI content (e.g., time-invariant CSI) with different groups within CSI Part 1 and / or CSI Part 2, such that certain time-varying CSI content can be initially omitted from CSI Part 2 (e.g., when the user equipment (UE) only reports coefficients or time-invariant CSI associated with the Doppler domain having an index of 0 to the network node). Some aspects more specifically involve associating content related to the selection of the Doppler domain basis with Doppler domain bases having an index greater than 0. Content related to coefficient quantization and its association with Doppler domain base indexes greater than 0. Content related to the Non-Zero Coefficient (NZC) selection bitmap and / or content related to the Channel Quality Indicator (CQI) for slots other than the first slot of the CSI window are associated with group 2 of CSI section 2. In some examples, if the uplink resource allocation for CSI section 2 is insufficient to carry all CSI content extrapolated or predicted by the UE for the CSI window, the time-varying CSI content associated with group 2 of CSI section 2 may be packaged last and / or omitted first. Furthermore, in some examples, some extrapolated or predicted CSI content may be included in group 1 of CSI section 2 or group 0 of CSI section 2, or may be included in CSI section 1, depending on the relative importance, relevance, and / or payload size of the CSI content.

[0027] Specific aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. In some examples, the described techniques can be used to reduce overhead associated with CSI reports in which some CSI content is time-invariant (e.g., associated with a Doppler domain base selection with an index of 0) and / or some time-varying CSI content is omitted from the CSI report (e.g., CSI content associated with a Doppler domain base selection with an index greater than 0). For example, when a UE omits time-varying CSI content from a CSI report according to one or more CSI omission rules due to insufficient uplink resource allocation to carry all content associated with CSI section 2, the payload for carrying time-varying content that is only related to future Doppler domain bases and can be omitted from the CSI report may be wasted (e.g., unusable by network nodes because the correlation coefficient is omitted). In this way, associating time-varying CSI content with group 2 of CSI section 2 may result in the time-varying CSI content being omitted in the first place, which can save resources that would otherwise be wasted by delivering irrelevant time-varying content from the UE to the network node.

[0028] Figure 1This 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 or a 6G network, or may include elements of a 5G (e.g., NR) network or a 6G network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node (NN) 110a, network node 110b, network node 110c, and network node 110d), one UE 120 or more UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities.

[0029] Network node 110 may include one or more devices that enable communication between UE 120 and wireless network 100. Network node 110 may include, for example, an NR network node, a 6G network node, a node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point (AP) or transmit / receive point (TRP), a network mobility element, a core network node, network elements, network equipment, and / or a radio access network (RAN) node. As shown, network node 110 may include one or more network nodes. In some aspects, network node 110 may be an aggregated network node, meaning that network node 110 may utilize a radio protocol stack physically and / or logically integrated within a single RAN node. For example, network node 110 (aggregated network node) may include a single standalone base station or a single TRP that may utilize a radio protocol stack (such as a complete gNB protocol stack) to facilitate communication between UE 120 and the core network associated with wireless network 100.

[0030] In some respects, network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), meaning that network node 110 may utilize a protocol stack that is physically and / or logically distributed among two or more nodes in the same or different geographical locations. For example, network node 110 may include one or more central units (CUs), one or more distributed units (DUs), one or more radio units (RUs), one or more integrated access and backhaul (IAB) nodes, one or more near real-time (near-RT) RAN intelligent controllers (RICs), and / or non-real-time (non-RT) RICs, or a combination thereof, within wireless network 100. For example, "one / the network node 110" may refer to a node implementing a portion of the protocol stack, a node implementing the complete protocol stack, or a collection of nodes collectively implementing the protocol stack. In some cases, CUs, DUs, and / or RUs may be implemented as virtual units, such as virtual central units (VCUs), virtual distributed units (VDUs), or virtual radio units (VRUs), etc.

[0031] Decomposed network nodes 110 in wireless network 100 can be utilized in IAB networks, Open Radio Access Networks (O-RAN (such as network configurations initiated by the O-RAN Alliance)), or Virtualized Radio Access Networks (vRAN, also known as Cloud Radio Access Networks (C-RAN)) to facilitate scaling of the communication system by decoupling base station functionality into one or more separately deployable units. In some examples, network node 110 may be or includes network nodes (such as DUs) that communicate with other network nodes 110 via fronthaul or midhaul links. For example, a DU may facilitate communication between an RU and a CU. In some examples, network node 110 may be or includes network nodes (such as CUs) that communicate with other network nodes 110 via midhaul links or with the core network via backhaul links.

[0032] Network node 110 in relay communication may be referred to as a relay station, relay network node, or relay. The relay station can receive data transmissions from upstream stations (e.g., network node 110 or UE 120) and transmit data to downstream stations (e.g., UE 120 or network node 110). Figure 1 In the example shown, network node 110d (e.g., a relay network node) can communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. Additionally and / or alternatively, UE 120 can be a relay station capable of relaying transmissions to other UEs 120, or can operate as such a relay station. UE 120 relaying communication can be referred to as a UE repeater or relay UE, etc.

[0033] In some examples, network node 110 may be or include network nodes such as RU, TRP, or base stations that communicate with UE 120 via a radio access link (which may be referred to as a "Uu" link). The radio access link may include a downlink and an uplink. A "downlink" (or "DL") refers to the communication link from network node 110 to UE 120, while an "uplink" (or "UL") refers to the communication link from UE 120 to network node 110. The downlink may include one or more control channels on which control information (e.g., scheduling information, reference signals, configuration information) can be transmitted and received, and one or more data channels on which data (e.g., data associated with UE 120) can be transmitted and received. The one or more control channels may include one or more physical downlink control channels (PDCCH), and the one or more data channels may include one or more physical downlink shared channels (PDSCH). The uplink may include one or more control channels on which control information (e.g., feedback, reference signals transmitted for one or more downlinks) can be transmitted and received, and one or more data channels on which data (e.g., data associated with UE 120) can be transmitted and received. The one or more control channels may include one or more Physical Uplink Control Channels (PUCCHs), and the one or more data channels may include one or more Physical Uplink Shared Channels (PUSCHs). The downlink and uplink may each include a set of resources on which network node 110 and UE 120 can communicate.

[0034] Resources for downlink and resources for uplink may each include one or more time-domain resources (frames, subframes, time slots, symbols), frequency-domain resources (bands, frequency carriers, subcarriers, resource blocks, resource elements), spatial-domain resources (specific transmission directions or beam parameters), or combinations thereof. Frequency-domain resources for downlink and / or frequency-domain resources for uplink may be divided into one or more bandwidth portions (BWPs). A bandwidth portion may refer to a contiguous block of frequency-domain resources allocated for one or more UEs 120. Bandwidth portions may be dynamically configured (e.g., configured by network node 110 sending Dynamic Control Information (DCI) to one or more UEs 120) and / or reconfigured, meaning that bandwidth portions can be adjusted in real-time (or near real-time) based on changing network conditions in the wireless network 100 and / or based on the specific requirements of one or more UEs 120. This allows for more efficient use of available frequency-domain resources in the wireless network 100.

[0035] Some network nodes 110 (e.g., base stations, RUs, TRPs) can provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), depending on the context in which the term is used, the term "cell" can refer to the coverage area of ​​network node 110 or a network node subsystem serving that coverage area. In some examples, network node 110 can provide communication coverage for macrocells, picocells, femtocells, or another type of cell. A macrocell can cover a relatively large geographic area (e.g., with a radius of several kilometers) and can allow unrestricted access by UE 120 with a service subscription. A picocell can cover a relatively small geographic area and can allow unrestricted access by UE 120 with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a residential area) and can allow restricted access by UE 120 associated with that femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). A network node 110 used for a macrocell can be referred to as a macro network node. A network node 110 used for a picocell can be referred to as a pico network node. The network node 110 used for femtocells can be referred to as a femtocell network node or a home network node.

[0036] Wireless network 100 can be a heterogeneous network, comprising different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, aggregation network nodes, and / or decomposition network nodes, etc. Compared to other types of network nodes, some types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different effects on interference in wireless network 100. For example, macro network nodes may have high transmit power levels (e.g., 5 watts to 40 watts), while pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 watts to 2 watts). Figure 1 In the example shown, network node 110a can be a macro network node for macro cell 102a, network node 110b can be a pico network node for pico cell 102b, and network node 110c can be a femto network node for femto cell 102c. Network nodes can support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographical area of ​​the cells may move depending on the location of mobile network nodes 110 (e.g., mobile network nodes, such as trains, satellite base stations, drones, or non-terrestrial network (NTN) network nodes).

[0037] Network controller 130 may be coupled to or communicate with a set of network nodes 110, and may provide coordination and control for these network nodes 110. In some aspects, wireless network 100 includes one or more network controllers 130. Additionally and / or alternatively, a core network associated with wireless network 100 may include one or more network controllers 130. Network controller 130 may communicate with network nodes 110 via a backhaul communication link. The backhaul link facilitates communication between wireless network 100 and the core network. In some aspects, network controller 130 may be a CU or a core network device, may include a CU or a core network device, or may be included in a CU or a core network device.

[0038] UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may be, for example, an access terminal, terminal, mobile station, or subscriber unit, and may include, for example, an access terminal, terminal, mobile station, or subscriber unit, or may be included in, for example, an access terminal, terminal, mobile station, or subscriber unit. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, or a satellite radio), a vehicle component or sensor, a smart meter or sensor, industrial manufacturing equipment, a global positioning system device (or other positioning device), a UE function of a network node, or any other suitable device or function that can communicate via a wireless medium.

[0039] Some UEs 120 can be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC UEs or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, or location tags, which can communicate with network nodes, another device (e.g., a remote device), or some other entity. Some UEs 120 can be considered Internet of Things (IoT) devices, or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 can be considered customer premises equipment.

[0040] UE 120 may include or be contained within a housing that houses components of UE 120, such as processor components or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.

[0041] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without communicating through a network node 110 acting as an intermediary). As an example, UE 120a may send sidelink communication directly to UE 120e on a sidelink, instead of sending it to network node 110 on an uplink, so that network node 110 then sends it to UE 120e on a downlink. UEs 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, vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In some examples, network node 110 may still schedule and / or allocate resources for sidelink communication between UEs 120 in the wireless network 100. Alternatively, instead of network node 110, UE 120 may perform scheduling operations, resource selection operations, and / or other operations for sidelink communication as described elsewhere herein.

[0042] Devices of the wireless network 100 (e.g., UE 120, network node 110) can communicate using the electromagnetic spectrum, which can be subdivided by frequency or wavelength into various categories, frequency bands, carriers, and / or channels. For example, devices of the wireless network 100 can communicate using one or more operating frequency bands. In some aspects, multiple wireless networks 100 can be deployed in a given geographic area. Each wireless network 100 can support a specific radio access technology (RAT) and can operate on one or more carrier frequencies in one or more frequency ranges (such as 410MHz to 7.125GHz or 24.25GHz to 52.6GHz, etc.). The RAT may also be referred to as an air interface and can include 4G RAT, 5G / NR RAT, and / or 6G RAT, etc. In some examples, when multiple RATs are deployed in a given geographic area, each RAT in the geographic area can operate on a different frequency to avoid interference between wireless networks of different RATs.

[0043] In 5G NR, two initial operating frequency bands have been designated as frequency ranges FR1 (410MHz to 7.125GHz) and FR2 (24.25GHz to 52.6GHz). Although a portion of FR1 is greater than 6GHz, in various documents and articles, FR1 is generally (interchangeably) referred to as the "sub-6GHz" band. Similar naming issues sometimes arise with FR2, although it is not the Very High Frequency (EHF) band (30GHz to 300GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is generally (interchangeably) referred to as the "millimeter wave" band in various documents and articles.

[0044] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) frequencies. The operating band of these IF frequencies may be referred to as the frequency range designation FR3 (7.125 GHz to 24.25 GHz). Bands falling within FR3 can inherit the characteristics of FR1 or FR2, thus effectively extending the features of FR1 or FR2 into the IF frequencies. Furthermore, higher frequency bands can extend 5G NR operation, 6G operation, and / or other RATs beyond 52.6 GHz. For example, three higher operating frequency bands may be referred to as the frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0045] Considering the examples above, unless otherwise specifically stated, the term "below 6 GHz" as used herein can broadly refer to frequencies less than 6 GHz, within FR1, or including intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, the term "millimeter wave" as used herein can broadly refer to frequencies that can include intermediate frequency band frequencies, within FR2, FR4, FR4-a, FR4-1, or FR5, or within the EHF band. It is conceivable that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0046] In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive CSI-RS at each of a plurality of CSI-RS times; and send to network node 110 a CSI report associated with measurements in the plurality of CSI-RS times and associated with one or more time-invariant CSI content types, wherein the CSI report omits at least a portion of second CSI content associated with measurements in the plurality of CSI-RS times and associated with one or more time-varying CSI content types in connection with one or more omission rules associated with the CSI report. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0047] Figure 2 This is a diagram illustrating example 200 of communication between a network node and a UE in a wireless network according to this disclosure. The network node may correspond to... Figure 1 Network node 110. Similarly, the UE can correspond to Figure 1 UE 120.

[0048] like Figure 2 As shown, network node 110 may include a data source 212, a transmit processor 220, a transmit (TX) multiple-input multiple-output (MIMO) processor 230, a set of modems 232 (such as 232a to 232t, where t≥1), a set of antennas 234 (such as 234a to 234t, where t≥1), a MIMO detector 236, a receive processor 238, a data sink 238, a controller / processor 240, a memory 242, a communication unit 244, and / or a scheduler 246, etc. In some aspects, one or a combination of the antennas 234, modems 232, MIMO detectors 236, receive processors 238, transmit processors 220, or TX MIMO processors 230 may be included in a transceiver incorporated into network node 110. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein. In some aspects, network node 110 may include another interface, another communication component, and / or another component (such as a network interface) that facilitates communication with UE 120 or another network node. Some network nodes 110 (such as one or more CUs or one or more DUs) may not include radio frequency components that facilitate direct communication with UE 120.

[0049] For downlink communication, the transmitting processor 220 may receive data from the data source 212. This data may be intended for use by UE 120 (or a set of UEs 120) and may therefore be referred to as downlink data. In some implementations, the transmitting processor 220 may select one or more modulation and decoding schemes (MCS) for UE 120 based on one or more channel quality indicators (CQIs) received from UE 120. The network node 110 may process the data to be transmitted to UE 120 on the downlink (e.g., may encode the data) to generate data symbols based on the MCS selected for UE 120 and may provide data symbols to UE 120. The transmitting processor 220 may process system information (e.g., semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, or upper-layer signaling) and provide overhead symbols and control symbols. The transmitting processor 220 can generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), demodulation reference signals (DMRS), or channel state information (CSI) reference signals) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)).

[0050] The TX MIMO processor 230 can perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, or reference symbols where applicable, and can provide a set of output symbol streams (e.g., T output symbol streams) to a set of modems 232. For example, each output symbol stream can be provided to a corresponding modulator component (shown as MOD) of the modem 232. Each modem 232 can use the corresponding modulator component to process (e.g., modulate) the corresponding output symbol stream (e.g., for Orthogonal Frequency Division Multiplexing (OFDM)) to obtain an output sample stream. Each modem 232 can also use the corresponding modulator component to process (e.g., convert to analog, amplify, filter, or up-convert) the output sample stream to obtain a downlink signal.

[0051] Modems 232a to 232t can transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234. Downlink signals may include DCI communication, Media Access Control (MAC) Control Element (MAC-CE) communication, RRC communication, or another type of downlink communication. Downlink signals may carry one or more transport blocks of data. A transport block can refer to a data unit transmitted via the air interface in the wireless network 100. A data stream can be encoded into multiple transport blocks for transmission via the air interface. The number of transport blocks used for a particular data stream can be associated with the transport block size. This transport block size can be based on or otherwise associated with the radio channel conditions on the air interface, the MCS used to encode the data, the downlink resources allocated for transmitting the data, and / or another parameter. Generally, a larger transport block size allows for a larger amount of data to be transmitted in a single transmission, reducing signaling overhead. However, a larger transport block size may increase the likelihood of transmission and / or reception errors, which can be mitigated by more robust error correction techniques.

[0052] One or more antennas in the set of antennas 234 may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, etc., or may be included in the one or more antenna panels, the one or more antenna groups, the one or more sets of antenna elements, or the one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, or with one or more transmitting or receiving components (such as...). Figure 2 One or more antenna elements coupled to one or more components.

[0053] Each antenna element of antenna 234 may include one or more sub-elements for radiating or receiving radio frequency signals. For example, a single antenna element may include a first sub-element cross-polarized with a second sub-element, which can be used to independently transmit cross-polarized signals. Antenna elements may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between antenna elements may allow signals transmitted individually by antenna elements at desired wavelengths to interact or interfere (e.g., to form a desired beam). For example, given a desired wavelength or frequency range, the spacing may provide a quarter wavelength, half wavelength, or other fraction of the wavelength between adjacent antenna elements to allow interaction or interference of signals transmitted by individual antenna elements within that desired range.

[0054] Antenna elements and / or sub-elements can be used to generate beams. A “beam” can specify the direction of transmission, such as a wireless signal transmitted in the direction of a receiving device. A beam can include a directional signal, a direction associated with the signal, a set of directional resources associated with the signal (e.g., angle of arrival, horizontal direction, vertical direction), and / or a set of parameters indicating one or more aspects of the directional signal, the direction associated with the signal, and / or the set of directional resources associated with the signal. Antenna elements can be individually selected or deselected for the transmission of a signal (or multiple signals) by controlling the amplitude of one or more corresponding amplifiers. Beamforming involves generating a beam using multiple signals on different antenna elements, wherein one or more or all of the multiple signals are phase-shifted relative to each other. The formed beam can carry physical or higher-level reference signals or information. As each of the multiple signals is radiated from a corresponding antenna element, the radiated signals interact with each other, interfere (constructive interference and destructive interference), and are amplified to form the resulting beam. Shape (such as amplitude, width, and / or the presence of sidelobes) and orientation (such as the angle of the beam relative to the surface of the antenna array) can be dynamically controlled by modifying the phase shift or phase offset of multiple signals relative to each other.

[0055] Beamforming can be used for communication between UE 120 and network node 110, such as for millimeter-wave communication. In this case, network node 110 can provide UE 120 with a configuration of Transmit Configuration Indicator (TCI) states, which indicate beams that UE 120 can use, for example, to receive PDSCH. Network node 110 can indicate an active TCI state to UE 120, which UE 120 can use to select the beam for receiving PDSCH.

[0056] Beam indication can be or includes TCI state information elements, beam identifiers (IDs), spatial relationship information, TCI state IDs, closed-loop indexes, panel IDs, TRP IDs, and / or sounding reference signal (SRS) set IDs, etc. TCI state information elements (referred to herein as TCI states) can indicate information associated with beams such as downlink beams. For example, TCI state information elements can indicate TCI state identifiers (e.g., tci-StateID), quasi-co-location (QCL) types (e.g., qcl-Type1, qcl-Type2, qcl-TypeA, qcl-TypeB, qcl-TypeC, and / or qcl-TypeD), cell identifiers (e.g., ServCellIndex), bandwidth portion identifiers (bwp-Id), and / or reference signal identifiers, such as CSI-RS (e.g., NZP-CSI-RS-ResourceId and / or SSB-Index). Spatial relationship information can similarly indicate information associated with uplink beams.

[0057] Beam indication can be a joint or separate downlink / uplink beam indication within a unified TCI framework. In some cases, the network may use at least UE-specific (unicast) DCIs to indicate joint or separate DL / UL beam indications from active TCI states to support Layer 1 (L1) based beam indication. In some cases, existing DCI formats 1_1 and / or 1_2 may be reused for beam indication. Network node 110 may include support mechanisms for UE 120 to acknowledge successful decoding of the beam indication. For example, acknowledgment / negation of PDSCH scheduled via a DCI carrying the beam indication may also be used as ACK for the DCI.

[0058] Beam indication can be provided for carrier aggregation scenarios. Within the unified TCI framework, the information network can support the updating and activation of a common TCI state ID to provide a common QCL and / or one or more common UL transmit spatial filters across a configured set of component carriers. This type of beam indication can be applied to in-band CA as well as joint DL / UL beam indication and individual DL / UL beam indication. The common TCI state ID can refer to a reference signal determined based on the TCI state indicated by the common TCI state ID, used to provide QCL type D indication and determine the UL transmit spatial filters across a configured set of CCs.

[0059] For uplink communication, uplink signals from UE 120 or other UEs may be received on the uplink by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232, shown as DEMOD), detected where applicable by MIMO detector 236 (e.g., receive (Rx) MIMO processor), and / or 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 term "controller / processor" may refer to one or more controllers and / or one or more processors.

[0060] Network node 110 can use communication unit 244 to communicate with network controller 130. Communication unit 244 can support wired and / or wireless communication protocols and / or connections, such as Ethernet, fiber optic and / or Universal Public Radio Interface (CPRI), etc. Network node 110 can use communication unit 244 to communicate with network controller 130 to send and / or receive data associated with UE 120 or to execute network control signaling, etc.

[0061] Network node 110 may use scheduler 246 to schedule one or more UEs 120 for downlink or uplink communication. In some aspects, scheduler 246 may use DCI to dynamically schedule transmissions to and / or from UE 120. In some aspects, scheduler 246 may use RRC configuration (e.g., semi-static configuration) to perform semi-persistent scheduling (SPS) or configured permissioned (CG) configuration for UE 120, wherein scheduler 246 may allocate cyclic time-domain resources and / or frequency-domain resources that UE 120 may use to transmit and / or receive communication in wireless network 100.

[0062] One or more of the following may be included in the RF chain of network node 110: transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, and / or controller / processor 240. The RF chain may include filters, mixers, oscillators, amplifiers, analog-to-digital converters (ADCs), and / or other devices for converting analog signals (such as those used for transmission or reception over an air interface) to digital signals (such as those used for processing by one or more processors of network node 110).

[0063] UE 120 may include a set of antennas 252 (shown as antennas 252a to 252r, where r ≥ 1), a set of modems 254 (shown as modems 254a to 254r, where r ≥ 1), a MIMO detector, a receive processor 258, a data sink 260, a data source 262, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, a memory 282, and / or a communication manager 140, etc. One or more components of UE 120 may be included in housing 284. In some aspects, one or a combination of antennas 252, modems 254, MIMO detector 256, receive processor 258, transmit processor 264, or TX MIMO processor 266 may be included in a transceiver incorporated into UE 120. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein. In some respects, UE 120 may include another interface, another communication component, and / or another component that facilitates communication with network node 110 or another UE 120.

[0064] One or more antennas in the set of antennas 252 may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, etc., or may be included in the one or more antenna panels, the one or more antenna groups, the one or more sets of antenna elements, or the one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, or with one or more transmitting or receiving components (such as...). Figure 2 One or more antenna elements coupled to one or more components. In some aspects, each antenna element of antenna 234 may include one or more sub-elements for radiating or receiving radio frequency signals.

[0065] For downlink communication, the set of antennas 252 can receive downlink signals from network node 110 or other network nodes 110, and can provide a set of received signals (e.g., R received signals) to the set of modems 254. For example, each received signal can be provided to a corresponding demodulator component (shown as DEMOD) of modem 254. Each modem 254 can use the corresponding demodulator component to condition (e.g., filter, amplify, downconvert, or digitize) the received signal to obtain an input sample. Each modem 254 can use the corresponding demodulator component to further demodulate or process the input sample (e.g., for OFDM) to obtain the received symbols. MIMO detector 256 can obtain the received symbols from the set of modems 254, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. Receiver processor 258 can process (e.g., decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280.

[0066] For uplink communication, the transmitting processor 264 can receive and process data from the data source 262 and control information from the controller / processor 280. The data may include data to be transmitted to network node 110 and / or another UE. The control information may include one or more parameters, feedback, one or more signal measurements, and / or other types of control information. In some aspects, the receiving processor 258 and / or the controller / processor 280 can determine one or more parameters for receiving signals (such as those received from network node 110 or another UE), such as Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, CQI parameters, or Transmit Power Control (TPC) parameters, etc. The control information may include indications of RSRP, RSSI, RSRQ, CQI, and / or other parameters. This control information may facilitate parameter selection and / or scheduling for UE 120 by network node 110.

[0067] Transmitter 264 can generate reference symbols for one or more reference signals, such as uplink DMRS, uplink SRS, and / or another type of reference signal. Symbols from transmitter 264 can be pre-decoded by TX MIMO processor 266, where applicable, and further processed by an assembly of modems 254 (e.g., for DFT-s-OFDM or CP-OFDM). TX MIMO processor 266 can perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide an assembly of output symbol streams (e.g., R output symbol streams) to the assembly of modems 254. For example, each output symbol stream can be provided to a corresponding modulator component (shown as MOD) of modem 254. Each modem 254 can use the corresponding modulator component to process (e.g., modulate) the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 254 can also use the corresponding modulator component to process (e.g., convert to analog, amplify, filter, or up-convert) the output sample stream to obtain an uplink signal.

[0068] Modems 254a to 254r can transmit a set of uplink signals (e.g., R downlink signals) via a corresponding set of antennas 252. Uplink signals may include uplink control information (UCI) communications, MAC-CE communications, RRC communications, or another type of uplink communication. Uplink signals may carry one or more transport blocks of data. Sidelink data and control transmission (i.e., transmission directly between two or more UEs 120) typically uses techniques similar to those described for uplink data and control transmission and may use sidelink-specific channels such as the Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Control Channel (PSCCH), or Physical Sidelink Feedback Channel (PSFCH).

[0069] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in the core network. Network controller 130 may communicate with network node 110 via communication unit 294 on a backhaul link. Network controller 130 may provide UE 120 with access to a local area network (LAN), a wide area network (WAN) such as the Internet, a storage area network, a local data network, a private network, a content delivery network (CDN), and / or another network communicatively connected to the core network (via network node 110 and the core network). In some aspects, network controller 130 may facilitate UE 120 access to one or more services hosted in the core network, such as content delivery services, gaming services, storage services, streaming services, and / or another type of service.

[0070] The controller / processor 240 of network node 110, the controller / processor 280 of UE 120, or Figure 2 Any other component may implement one or more techniques or perform one or more operations associated with time-invariant and time-varying segmentation for Doppler CSI, as described in more detail elsewhere herein. For example, the controller / processor 240 of network node 110, the controller / processor 280 of UE 120, or... Figure 2 Any other component that can execute or direct, for example Figure 8 The operation of process 800 or other processes as described herein. Memory 242 and memory 282 may store data and program code for network node 110 and UE 120, respectively. In some examples, memory 242 or memory 282 may include a non-transitory computer-readable medium storing a set of instructions (e.g., code or program code) for wireless communication. For example, the set of instructions may be executed by one or more processors of network node 110 or UE 120 (e.g., directly, or after compilation, transformation, or interpretation). Figure 8 The process 800 or other processes as described herein. In some examples, the execution instructions may include run instructions, transform instructions, compile instructions, or interpret instructions, etc.

[0071] In some aspects, UE 120 includes: components for receiving CSI-RS in each of a plurality of CSI-RS times; and / or components for sending to network node 110 a CSI report associated with measurements in the plurality of CSI-RS times and associated with one or more time-invariant CSI content types, wherein the CSI report omits at least a portion of second CSI content associated with measurements in the plurality of CSI-RS times and associated with one or more time-invariant CSI content types in association with one or more omission rules associated with the CSI report. Components for UE 120 to perform the operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0072] Figures 3A to 3C This is an illustration of example 300 of a codebook structure that can be used to report Doppler CSI according to this disclosure. Specifically, Figure 3A An example predecoder supporting Enhanced Type II (eType-II) CSI up to rank 4 is shown. Each layer (e.g., such as...) Figure 3ALayers 0 through 3 shown correspond to different data streams. For each layer, the pre-decoder spans N3 pre-decoder matrix indicator (PMI) subbands. t The ×N3 matrix W makes the pre-decoder .in this case, It is shared by all layers, representing the Discrete Fourier Transform (DFT) basis, and is N. t ×2L spatial domain (SD) basis (which may also be called "SD beam") matrix, where N t Configured by Radio Resource Control (RRC) signaling, and N t =2N1O1N2O2, which represents the amount of transmit antenna oversampling with O1 and O2. Furthermore, L can be configured by RRC signaling and can have values ​​of 2, 4, or 6. It is layer-specific, represents the DFT basis, and is an M×N3 frequency domain basis matrix, where M represents the quantity of the frequency domain basis and is rank-pair-specific such that for rank 1 or rank 2, M1=M2, and for rank 3 or rank 4, M3=M4, and M1 or M3 is an RRC configuration. Furthermore, It is layer-specific and forms a 2L×M coefficient matrix, where for each layer there are up to K0 non-zero coefficients (NZCs) (and where K0 is a parameter of the RRC configuration). Across all layers, the UE can report up to 2K0 NZCs, where unreported coefficients are set to zero. Furthermore, in some cases, One or more of the coefficients in the code can be quantized. Generally, this is done when the UE sends a CSI report to the network node to instruct the pre-decoder. Subsequently, the network nodes assume a pre-decoder It is constant over a certain period of time, and a pre-decoder is used to pre-decode one or more PDSCH transmissions until the next CSI report is provided.

[0073] Figure 3B Another example of an eType-II CSI pre-decoding matrix for a layer is shown, where ,in This represents the chosen spatial basis. This represents the selected frequency domain basis, and The coefficient matrix is ​​represented as described in more detail above. One challenge associated with Type II CSI feedback as described in this paper is the relatively large feedback overhead for reporting coefficients on a subband basis. This feedback overhead can increase (e.g., approximately linearly) with the amount of subbands. Therefore, for a large number of subbands, the overhead associated with CSI reporting can become substantial. Consequently, the eType-II codebook has been (e.g., by 3GPP) defined to overcome the large feedback overhead associated with previous Type-II CSI feedback.

[0074] like Figure 3B As shown, the eType-II pre-decoder matrix can be a three-level pre-decoder (e.g., three components) that depends on a three-level codebook. .matrix It can be similar to the matrix described above. And it can be independent of the layer (r). Matrix It can contain quantities of SD basis vectors selected from the space codebook. Matrix It can be layer-dependent and can be used to select frequency-domain (or delay-domain) basis vectors from a DFT-based matrix (which may be called a delay codebook). Matrix It can be layer-dependent and can include quantities for combining SD basis vectors and frequency domain basis vectors selected respectively from the spatial codebook and the delay codebook. For example... Figure 3B As shown, the matrix It can contain: N t There are N rows, where N is a row. t It represents the quantity of spatial domain basis candidates or antenna ports; and 2L columns, where L is the quantity of CSI-RS ports selected per polarization (e.g., the quantity of CSI-RS ports selected for a given transmit layer). Matrix It can have N3 columns and M rows, where N3 is the configured orthogonal DFT basis vector or frequency domain candidate quantity, and M is the quantity of the selected frequency domain basis vector. The value of N3 can depend on the quantity of the CQI subband and the quantity of the PMI subband, which can be values ​​configured by RRC. The value of M can be based on parameters configured by RRC, such as the RRC CSI codebook parameter P. v For example, the value of M could be... , where R is the PMI subband size indicator (e.g., it could be configured with RRC). Matrix It can have 2L rows and M columns, where M is the amount of the selected frequency domain basis vector.

[0075] matrix It can be a linear combination coefficient matrix comprising 2L∙M coefficients, used to linearly combine the selected M frequency domain basis vectors for the selected 2L CSI-RS ports. The UE can report (e.g., in a CSI report) from the matrix. NZC. For example, for layer l, only A subset of the coefficients is non-zero and is reported. The remainder (2L∙M)- Some coefficients are not reported by the UE (e.g., in the CSI report) and are considered zero. In some examples, ,in It is the maximum amount of NZC in each layer, determined by It means that among them These are parameters configured for RRC. The NZC selected for each layer l. This can be indicated via a bitmap (e.g., having a size of 2LM). For example, a value "1" in the bitmap can indicate that the coefficient corresponding to that bit is non-zero, selected by the UE, and reported. A value "0" in the bitmap can indicate that the coefficient corresponding to that bit is zero, and therefore not reported by the UE. The bitmap can be included in the CSI report. For example, the bitmap can be included in section 2 of the CSI report, which may also be referred to as UCI or CSI section 2 (e.g., as in combination). Figure 5 (To describe and depict in more detail).

[0076] Configurations associated with CSI reporting (e.g., RRC configuration) may indicate: parameters indicating the amount of spatial domain basis vectors to be selected by the UE from the spatial codebook for the computation of W1, and parameters indicating the amount of spatial domain basis vectors to be selected by the UE from the delay codebook layer by layer for W1. f The parameters of the calculated frequency domain (or delay domain) basis vectors. The value of N1 or N3, etc. The UE may send a CSI report, which includes the rank indication (RI) (e.g., a quantity indicating the selected layer of the pre-decoding matrix), CQI, and the quantity of NZC selected by the UE. Additionally, the CSI report may include an indication of the PMI. The PMI may include an indication of a spatial domain subset indicator (SD basis indicator), which indicates the spatial domain basis vector (i) selected for the RI layer of the pre-decoding matrix. 1,1 i 1,2 (e.g., the selected beam); a frequency domain subset indicator that indicates the frequency domain basis vectors (i) selected for each layer (0 to RI-1). 1,5 and i 1,6,l For each layer (0 to RI-1), the strongest coefficient indicator (SCI) indicates the coefficient relative to the strongest coefficient (not reported) (i 1,8,l The associated SD base index (or SD and frequency domain base index); a layer bitmap that indicates the NZC (i) associated with each layer. 1,7,l The associated SD base index and frequency domain base index; or the selected NZC (i 2,3,l i 2,4,l i 2,5,l Quantization of frequency domain vectors; etc. For example, one or more frequency domain vectors can be indexed. (against )and To identify and indicate. The amplitude coefficient indicator can be... and The phase coefficient indicator can be... Its non-zero bit identifier and Which coefficients in the bitmap are reported can be obtained from... instruct.

[0077] Figure 3C The diagram shows a pre-decoding matrix that can be used to represent rapid changes (e.g., over time instance n). Examples of time-domain codebooks. For instance, in medium-speed or high-speed channels (e.g., when the UE and / or network node are moving at medium or high speeds), rapid changes may exist in the channel-associated pre-decoder or CSI, and the time-domain codebook can be used to represent time-related channel changes in the CSI report provided by the UE to the network node. Therefore, compared to older CSI reporting techniques (e.g., such as...),... Figures 3A to 3B (As shown) In contrast, in this older CSI reporting technique, the UE reports a pre-decoder, which is assumed to be constant over a certain period of time until the next CSI report is provided. Figure 3C The illustrated time-domain codebook and CSI reporting techniques can be used to extrapolate CSI in the time domain to obtain future pre-decoders for rapidly changing channels, which would otherwise require more frequent CSI reporting. Furthermore, one or more time-domain compression techniques can be applied to the future pre-decoder to reduce the overhead associated with CSI reporting that indicates the future pre-decoder.

[0078] For example, such as Figure 3C As shown and as described in this paper, for n=0,…,N⁴–1, the coefficient matrix… It can be compressed into the Doppler domain, which is interchangeably referred to as the time domain. Furthermore, spatial domain bases and frequency domain bases ( and The coefficient matrix is ​​constant over time instance n. It is worth noting that the coefficient matrix... Compression into the Doppler domain (or time domain) reduces reporting overhead. CSI generated using a time-domain codebook can be called Type II Doppler CSI or time-domain CSI. Therefore, to construct the pre-decoded matrix, the UE can report one or more CSI-RS observations (where N... ob =N4, where N ob The quantity representing the observation is compressed at the UE and predicted at a network node (e.g., a base station). Alternatively or additionally, the UE may report one or more CSI-RS observations and an extrapolation set based on one or more CSI-RS observations, such that both compression and prediction are performed at the UE.

[0079] For example, the UE can measure CSI-RS on bursts of CSI-RS timings (e.g., multiple CSI-RS timings within a threshold time period), and the UE can extrapolate the measurements to predict or otherwise obtain future pre-decoders. ,for In this case, spatial domain basis and frequency domain basis , The coefficient matrix is ​​assumed to be constant over time and extrapolated. It is compressed into the Doppler domain to reduce the overhead of Type II Doppler CSI reported by the UE. For example, as Figure 3C As shown, the UE can measure CSI-RS at multiple CSI-RS bursts to obtain an observation time series (e.g., CSI-RS measurement), then extrapolate this time series over future time intervals from time n=0 to N4 to obtain a set of future pre-decoders, and then compress this set of future pre-decoders from the time domain t to the Doppler domain q. For example, in Figure 3C In the diagram, the future pre-decoder comprises five slices (shown in the shaded pattern), which are switched according to the Q-domain or Doppler ratio (e.g., Q in the time domain). Figure 3C The value of 3 is compressed, which results in the five future predecoders being represented as the three predecoders corresponding to indices 0, Q-2 and Q-1 in the Doppler field, thereby reducing the overhead associated with reporting (extrapolated) future predecoders.

[0080] Figure 4 This is a diagram illustrating Example 400 of a CSI window in the time domain according to this disclosure. In some aspects, as described herein, a CSI window can generally refer to a future time window or future duration associated with extrapolated or predicted CSI feedback reported by the UE to the network node. For example, the UE uses time-domain codebook extrapolation, prediction, or otherwise to obtain one or more future pre-decoders based on CSI measurements or observations performed in a burst of CSI-RS timing. In this case, the UE reports to the network node information regarding one or more future pre-decoders. The CSI feedback (e.g., after compression to the Doppler domain) can be compared with the CSI window (W). CSI (related to)

[0081] In some aspects, the CSI window may include a starting slot l, which may have a value dependent on (e.g., provided by the network node and / or wireless communication standard) and a window size equal to dN4 slots. For example, in a first configuration 410, the starting slot of the CSI window may correspond to a legacy reference resource (e.g., four or five slots prior to slot n in which the UE transmits a CSI report carrying extrapolated or predicted CSI feedback). In another example, in a second configuration 420, the starting slot of the CSI window may correspond to slot n in which the UE transmits a CSI report carrying extrapolated or predicted CSI feedback plus an increment δ, which may have a value of 0, 1, or 2 (e.g., associated with the delay of the network node applied to the PMI reported in the CSI feedback). Furthermore, for the window size, N4 is related to the time-domain base length (e.g., the future pre-decoder represented in the compressed CSI feedback). The quantity is a unitless value corresponding to the PMI time granularity reported in the CSI feedback, and d is a quantity of time slot corresponding to the time granularity of the PMI reported in the CSI feedback (e.g., the quantity of time slot corresponding to the future pre-decoder in compressed CSI feedback). The amount of time slot associated with each pre-decoder in the dataset). For example, in Figure 4 In the first configuration 410 and the second configuration 420, the window size is 4 time slots, based on the time domain length of N4=4 and the time granularity of PMI with 1 time slot.

[0082] In some aspects, when the UE sends a PUSCH message carrying a CSI report (which indicates an extrapolated or predicted CSI feedback associated with the CSI window), the UE can indicate X CQIs in the time domain for one or more slots within the CSI window. For example, in the first configuration 430, the UE can report one CQI (X=1) in the time domain, in which case the extrapolated or predicted CSI feedback can include the CQI value for the starting slot only within the CSI window. Additionally or alternatively, in the second configuration 440, the UE can indicate X CQIs for the starting slot l and the ending slot l+W of the CSI window. SCI The average of the CQIs of -1 is used to report one CQI in the time domain (X=1). Alternatively, in a third configuration 450, the UE may report two CQIs in the time domain (X=2), where these two CQIs may correspond to the start time slot l and the middle time slot of the CSI window, i.e., l+W of the CSI window. SCI / 2.

[0083] Figure 5 This is a diagram illustrating example 500 of CSI packaging and priority sorting according to this disclosure. For example... Figure 5As shown, a CSI report or UCI may comprise two parts, referred to as CSI Part 1 and CSI Part 2. "CSI Part 1" and "UCI Part 1" are used interchangeably herein. Similarly, "CSI Part 2" and "UCI Part 2" are used interchangeably herein. The contents included in CSI Part 1 and CSI Part 2 may be defined in wireless communication standards or otherwise fixed (e.g., 3GPP Specification 38.214, Section 5.2.3 may define the contents included in CSI Part 1 and CSI Part 2 and their priority order).

[0084] like Figure 5 As shown, CSI section 1 may include indications of the following: the amount of RI, CQI, and NZC associated with PMI (or the number of non-zero coefficients (NNZC)). CSI section 2 may include: the SD basis vectors selected for the RI layer of the pre-decoded matrix (i 1,1 i 1,2 (e.g., the selected beam); a frequency domain subset indicator that indicates the frequency domain basis vectors (i) selected for each layer (0 to RI-1). 1,5 and i 1,6,l For each layer (0 to RI-1), the SCI indicates the relationship with the strongest coefficient (i). 1,8,l The associated SD base index (or SD and frequency domain base index); a bitmap for coefficient selection for each layer, indicating the non-zero coefficients (i) of each layer. 1,7,l The associated SD base index and frequency domain base index; and / or the selected non-zero coefficients (i 2,3,l i 2,4,l i 2,5,l Quantification of ) ; etc. Part Two of CSI is not necessarily based on Figure 5 The order shown is packaged. CSI Part 1 typically has a higher priority than CSI Part 2. For example, when determining what will be included in a CSI report, the content included in CSI Part 1 may have a higher priority than the content included in CSI Part 2. Furthermore, because CSI Part 1 has a higher priority than CSI Part 2, CSI Part 1 has a smaller and fixed payload size and is transmitted with higher reliability than CSI Part 2, which has a variable payload size depending on the content of CSI Part 1. For example, because frequency domain basis selection, SCI, coefficient selection, and quantized NZC can be provided for layer zero (0) to layer RI-1, the RI (or layer quantity) indicated in CSI Part 1 and / or the NNZC value indicated in CSI Part 1 can determine the payload size of CSI Part 2. Frequency domain basis selection may include one or more parameters that indicate the... Each frequency domain basis is for each layer Selected from the frequency domain bases of the configured quantities, SCI can indicate each layer. The position of the strongest coefficient is indicated by the coefficient selection for each layer. The location of the NZC within the cell, and the quantized NZC can indicate the amplitude and / or phase quantization of the NZC (e.g., differential quantization based on SCI).

[0085] In some cases, when reporting CSI feedback, the UE may apply CSI packing and / or CSI omission rules for PUSCH-based resource allocation. For example, in scenarios where uplink resource allocation (e.g., PUSCH resource allocation) is insufficient to carry the full content of one or more CSI reports, the UE may discard or omit parts of one or more CSI reports. CSI omission may occur when network nodes do not accurately allocate PUSCH resources when scheduling CSI reports. For example, a network node may allocate resources for a rank 1 (RI=1) CSI report, but the UE may determine that a rank 2 CSI report is being sent and that the report size exceeds the size of the allocated PUSCH resources. In other words, when the network (e.g., one or more network nodes) allocates uplink resources for CSI reports, the network may not know the RI value that will be selected by the UE, which may result in the allocated uplink resources being insufficient (e.g., not large enough) to carry the full content of the CSI report. Additionally or alternatively, if a network node is attempting to reduce the overhead associated with a CSI report, the allocated uplink resources may be insufficient to carry the full content of the CSI report.

[0086] In such examples, the UE may discard a portion of the CSI content (e.g., this may be referred to as CSI omission or CSI packing with omission rules). Discarding a portion of CSI content from one or more CSI reports can be achieved by breaking down the CSI payload associated with the CSI report into groups associated with different priority levels. Each priority level is associated with a group of information or some content associated with the CSI report. Similarly, content associated with a CSI report can be associated with a group that defines the priority level of the corresponding content. Generally, as described herein, the UE may discard content included in a lower-priority CSI group until the payload size of the CSI report is suitable for uplink resource allocation (e.g., PUSCH resource allocation) for the CSI report. The size of CSI Part 1 may be fixed, while the size of CSI Part 2 may vary depending on the RI and / or other factors selected by the UE. Because network nodes may require information indicated by CSI Part 1 to decode CSI Part 2, CSI omission and / or prioritized CSI packing may be performed on CSI Part 2 (e.g., instead of CSI Part 1). In other words, information associated with CSI Part 1 will not be discarded by the UE.

[0087] like Figure 5 As shown, the content associated with CSI Part 2 can be divided into different groups. For example, the first group with the highest priority (e.g., referred to as group 0) may include: the spatial domain basis vectors (i) selected for the RI layer of the pre-decoding matrix. 1,1 i 1,2 (e.g., the selected beam) and the SCI for each layer (0 to RI-1), which indicates the relationship with the strongest coefficient (i 1,8,l The associated SD base index (or SD and frequency domain base index). As further shown, a second group with intermediate priority (e.g., referred to as group 1) may include: the selected frequency domain basis vector (i 1,5 i 1,6,l ); and the selected NZC (i 2,3,l The reference magnitude of the weakest polarization associated with ); the selected NZC (i 2,4,l i 2,5,l The first half of ) (e.g., Quantization of the highest priority NZC; and indication of the selected NZC (i 1,7,l The first half of ) (e.g., A bitmap of spatial and frequency domain indices associated with the highest priority bit. As further shown, a third group with the lowest priority (e.g., referred to as group 2) may include: the selected NZC (i 2,4,l i 2,5,l The second half (e.g., the remainder) The quantification of the lowest priority NZC and the indication of the selected NZC (i 1,7,l The second half (e.g., the remainder) A bitmap of spatial and frequency domain indices associated with the lowest priority bit.

[0088] As described in this article, for a given CSI report, group 0 may have the highest priority, followed by group 1, and then group 2. For example, in Figure 5 In the figure, reference numeral 510 indicates the CSI Part 2 packing order that the UE may apply when generating a single CSI report. As shown, the UE may include content (e.g., a packable CSI report) that first has content associated with Group 0, followed by content associated with Group 1 (e.g., if there is sufficient space in the uplink resource allocation after packing all content associated with Group 0), followed by content associated with Group 2 (e.g., if there is sufficient space in the uplink resource allocation after packing all content associated with Group 0 and all content associated with Group 1). Additionally or alternatively, CSI packing with omission rules may be associated with the CSI omission order. For example, as Figure 5 As indicated by reference numeral 520 in the accompanying figure, the CSI omission order can be associated with the index value associated with the CSI report. For example, CSI report 0 may have a higher priority than CSI report 1, CSI report 1 may have a higher priority than CSI report 2, and so on. Additionally, the CSI omission order can be associated with the content group associated with a given CSI report, as described above. For example, across multiple CSI reports, payloads including content associated with group 0 are packaged together with a priority of 0, and payloads including content associated with groups 1 and 2 are packaged with priorities 1, 2, ..., 2N. report -1, 2N report (where N) report This is related to the total number of CSI reports.

[0089] For example, assuming a PUSCH resource is associated with two CSI reports (e.g., CSI Report 1 and CSI Report 2), the order in which information from CSI Part 2 carried via the PUSCH resource is omitted or discarded can follow... Figure 5The omission rules described herein. For example, an omission rule may indicate that information associated with group 2 of CSI report 2 (or information associated with odd-numbered subbands of CSI report 2) will be omitted or discarded first. An omission rule may indicate that information associated with group 1 of CSI report 2 (or information associated with even-numbered subbands of CSI report 2) will be omitted or discarded second. An omission rule may indicate that information associated with group 2 of CSI report 1 (or information associated with odd-numbered subbands of CSI report 1) will be omitted or discarded third. An omission rule may indicate that information associated with group 1 of CSI report 1 (or information associated with even-numbered subbands of CSI report 1) will be omitted or discarded fourth. An omission rule may indicate that information associated with group 0 of all CSI reports will be omitted (or discarded last). When the PUSCH resources allocated for CSI reporting are insufficient to indicate all information associated with a CSI report, following the omission rules for CSI section 2 allows the UE to include more important information in the CSI report.

[0090] Figure 6 This is a diagram illustrating example 600 of prioritizing a coefficient matrix according to this disclosure. For example, refer to... Figure 6 The horizontal axis corresponds to the frequency domain (FD), while the vertical axis corresponds to the layer in the spatial domain (SD). Generally speaking, such as Figure 6 As indicated by the thick arrows, the packing order of coefficients in the coefficient matrix can begin with layer 0 and SD 0 associated with FD 0, and then proceed to the next FD after all coefficients associated with FD 0 have been packed (e.g., as shown in the image). Figure 6 (As shown by the dashed line in the image). In other words, both the coefficients and the bitmap are based on priority. Sort from highest to lowest priority, where It is a layer index. It is a spatial domain base index, and It is a frequency domain base index. Furthermore, in the context of CSI omission in CSI extrapolation or prediction involving one or more time domain bases, The order in which coefficients are packed can be such that coefficients of the Doppler basis with a value of 0 are packed first, followed by coefficients of the Doppler basis with a value greater than 0. For example, in some aspects, coefficients and bitmaps can be packed according to priority. Sort from highest to lowest priority, where λ is the level index. It is a spatial domain index. It is a frequency domain base index, and It is either a Doppler domain or a time-domain base index. Furthermore, the quantity chosen for the time-domain base for each layer is Q=2, where a Doppler domain base with index 0 is always chosen for each layer, and the UE only needs to report another chosen Doppler domain base with a positive zero index from index {1,…,N4-1}. For example, in… Figure 6 middle, The first half of the coefficients is associated with q=0, corresponding to the Doppler or time-domain basis with index 0, and The second half of the coefficient is associated with q=1, corresponding to a Doppler or time-domain basis with an index greater than 0.

[0091] Therefore, in the UE report associated with the Doppler domain base with index 0 The first half of the coefficient, and the network node receives the first half (for example, due to the reference above). Figure 5 The CSI omission rule describes omitting the Doppler domain base associated with an index greater than 0. The second half of the coefficients (which are included in group 2 of CSI section 2) still allows network nodes to derive a working pre-decoder from the coefficients associated with the Doppler domain basis with index 0. However, when network nodes receive only the coefficients associated with the Doppler domain basis with index 0 due to CSI omission, these coefficients are time-invariant (similar to the old-style CSI which is considered constant over time). Therefore, in such cases, including time-varying or otherwise time-domain-specific elements in CSI section 2 (such as pre-decoders with extrapolation or prediction associated with future time windows) could result in unnecessary overhead.

[0092] Various aspects as a whole involve associating time-domain-dependent CSI content (e.g., time-varying CSI) and / or time-independent CSI content (e.g., time-invariant CSI) with different groups within CSI Part 1 and / or CSI Part 2, such that certain time-varying CSI content can be initially omitted from CSI Part 2 (e.g., when the UE only reports coefficients or time-invariant CSI associated with the Doppler domain having an index of 0 to the network node). Some aspects more specifically involve associating content related to the selection of the Doppler domain base with a Doppler domain base having an index greater than 0. Content related to coefficient quantization and its association with Doppler domain base indexes greater than 0. NZC selects bitmap-related content and / or CQI-related content for slots other than the first slot for the CSI window to be associated with group 2 of CSI section 2. In some examples, if the uplink resource allocation for CSI section 2 is insufficient to carry all CSI content extrapolated or predicted by the UE for the CSI window, the time-varying CSI content associated with group 2 of CSI section 2 may be packaged last and / or omitted first. Furthermore, in some examples, some extrapolated or predicted CSI content may be included in group 1 of CSI section 2 or group 0 of CSI section 2, or may be included in CSI section 1, depending on the relative importance, relevance, and / or payload size of the CSI content.

[0093] Specific aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. In some examples, the described techniques can be used to reduce overhead associated with CSI reports in which some CSI content is time-invariant (e.g., associated with a Doppler domain base selection with an index of 0) and / or some time-varying CSI content is omitted from the CSI report (e.g., CSI content associated with a Doppler domain base selection with an index greater than 0). For example, when a UE omits time-varying CSI content from a CSI report according to one or more CSI omission rules due to insufficient uplink resource allocation to carry all content associated with CSI section 2, the payload for carrying time-varying content that is only related to future Doppler domain bases and can be omitted from the CSI report may be wasted (e.g., unusable by network nodes because the correlation coefficient is omitted). In this way, associating time-varying CSI content with group 2 of CSI section 2 may result in the time-varying CSI content being omitted in the first place, which can save resources that would otherwise be wasted by delivering irrelevant time-varying content from the UE to the network node.

[0094] Figures 7A to 7C This is an illustration of example 700 for time-invariant and time-varying segmentation of Doppler CSI according to this disclosure. Figure 7A As shown, network node 110 (e.g., CU, DU, and / or RU) can communicate with UE 120. In some aspects, network node 110 and UE 120 can be part of a wireless network (e.g., wireless network 100). UE 120 and network node 110 may... Figure 7A The operation shown has been performed with a wireless connection already established.

[0095] As used herein, "sending" communication from network node 110 to UE 120 can refer to direct transmission (e.g., from network node 110 to UE 120) or indirect transmission via one or more other network nodes or devices. For example, if network node 110 is a DU, indirect transmission to UE 120 could include the DU sending communication to an RU and the RU sending communication to UE 120. Similarly, "sending" communication from UE 120 to network node 110 can refer to direct transmission (e.g., from UE 120 to network node 110) or indirect transmission via one or more other network nodes or devices. For example, if network node 110 is a DU, indirect transmission to network node 110 could include the UE 120 sending communication to an RU and the RU sending communication to the DU.

[0096] like Figure 7A As shown, in the first operation 710, network node 110 may send configuration information, and UE 120 may receive the configuration information. In some aspects, UE 120 may receive the configuration information via RRC signaling, MAC-CE, and / or DCI, etc. In some aspects, the configuration information may include indications of one or more configuration parameters for UE 120 to select (e.g., stored by UE 120 or previously indicated by network node 110 or other network devices) or explicit configuration information for UE 120 to use in configuring itself.

[0097] In some respects, configuration information may be associated with CSI configuration or CSI-RS configuration. For example, UE 120 may be configured with one or more non-zero power (NZP) CSI-RS resource set configurations, as indicated by the higher-layer parameters CSI-ResourceConfig and NZP-CSI-RS-ResourceSet. In some respects, configuration may be associated with codebook configuration. For example, UE 120 may be configured with the higher-layer parameter codebookType. Codebook configuration may indicate the type of codebook to be used by UE 120 for CSI reporting or PMI reporting. For example, configuration may indicate that the codebook type is a time-domain base codebook or a Doppler-domain base codebook (e.g., as referenced above). Figure 3C (as described).

[0098] In some aspects, configuration information can indicate the values ​​of one or more parameters associated with CSI or PMI reports. For example, UE 120 can be configured with a higher-layer parameter, paramCombination, which indicates... P v Or values ​​such as L. As another example, the UE 120 can be configured with numberOfPMI-SubbandsPerCQI-Subband. As described elsewhere in this document, this parameter controls the pre-decoding matrix. The total amount, indicated by the PMI, is a function of the following: the amount of subband configured in the csi-ReportingBand, the subband size configured by the higher-level parameter subbandSize, and the total amount of PRB in the bandwidth portion associated with UE 120. In some aspects, UE 120 may (e.g., via higher-level parameters or RRC parameters) configure the amount N4 of the time-domain basis or Doppler domain basis to be associated with the codebook.

[0099] In some respects, configuration information may instruct UE 120 to report CSI or PMI for: spatial domain basis index values, frequency domain basis index values, and Doppler domain (or time domain) basis index values. For example, configuration information may instruct UE 120 to be configured with a codebook associated with time domain basis index values ​​and coefficients. For example, the higher-level parameter codebookType may instruct UE 120 to be configured with a time domain basis codebook in which the time domain basis is commonly selected for all spatial domain and frequency domain bases (e.g., ...). , , or ,in (This refers to the time-domain basis of the channel), or the codebook associated with the time-domain basis can be independently selected for different spatial and frequency-domain bases.

[0100] As another example, configuration information may indicate that the codebook is a Doppler domain-based codebook. For example, the Doppler domain may be associated with or related to the time domain (while the delay domain may be associated with or related to the frequency domain). For example, the codebook may be associated with a Doppler domain basis that is commonly chosen for all spatial and frequency domain bases (e.g., , , or ,in (This refers to the Doppler domain basis for the channel). As another example, the Doppler domain basis can be selected independently for different spatial and frequency domain bases. In some other examples, configuration information may indicate that the eType-II codebook associated with the time domain base will be used by the UE 120.

[0101] In some aspects, the configuration information may indicate a portion of the CSI or UCI associated with the time-domain base (e.g., part 1 or part 2). In other aspects, this portion of the CSI or UCI associated with the time-domain base (e.g., part 1 or part 2) may be defined by a wireless communication standard (such as 3GPP) or otherwise fixed (e.g., and not indicated in the configuration information). In some aspects, the time-domain base may be included in CSI (or UCI) part 2 (e.g., CSI part 2 as described in more detail elsewhere herein). For example, UE 120 may be configured to select a time-domain base for all layers (e.g., from layer 0 to layer RI-1). The selection of the time-domain base for all layers may be associated with CSI (or UCI) part 2. Other content associated with CSI (or UCI) part 1 and CSI (or UCI) part 2 may be similar or the same as described elsewhere herein. Additionally or alternatively, the configuration information may indicate a group (e.g., group 0, group 1, or group 2) associated with time-varying content (e.g., extrapolated or predicted CSI content) that is included in or otherwise associated with CSI section 2. In some other aspects, the group associated with the time-varying content (e.g., group 0, group 1, or group 2 of CSI section 2) may be defined by a wireless communication standard (such as 3GPP) or otherwise fixed.

[0102] In some respects, UE 120 can send a capability report, and network node 110 can receive the capability report. In some respects, the capability report can indicate that the UE supports a time-domain basecode or a Doppler-domain basecode, as described above. For example, UE 120 can indicate support for the aforementioned references. Figure 3C The described method performs time-domain base selection for CSI or PMI reporting. In some aspects, the configuration information may be based at least partially on capability reports. For example, UE 120 may respond to a capability report indicating that UE 120 supports a time-domain base codebook or Doppler domain base codebook configured for CSI reporting. In some aspects, UE 120 may configure itself at least partially based on configuration information. In some aspects, UE 120 may be configured to perform one or more of the operations described herein, at least partially based on configuration information.

[0103] In some aspects, during the second operation 720, network node 110 may send an indication of uplink resources associated with reporting CSI, and UE 120 may receive an indication of uplink resources associated with reporting CSI. For example, the uplink resource may be a PUSCH resource. For instance, upon successful decoding of a DCI that triggers an aperiodic CSI trigger state (e.g., a DCI associated with DCI format 0_1 ​​or DCI format 0_2, as defined by 3GPP or otherwise fixed), UE 120 may use the PUSCH on the serving cell associated with network node 110 to perform aperiodic CSI reporting. The aperiodic CSI trigger state may be configured for UE 120 via configuration information. As another example, UE 120 may perform semi-persistent CSI reporting on the PUSCH based at least in part on the successful decoding of a DCI that activates a semi-persistent CSI trigger state (e.g., a DCI associated with DCI format 0_1 ​​or DCI format 0_2). Semi-persistent CSI trigger states can be configured for UE 120 via configuration information. The DCI may include a CSI request field, which indicates the semi-persistent CSI trigger state to be activated or deactivated.

[0104] As described elsewhere in this document, for CSI feedback on the PUSCH, the CSI report may include two parts. CSI Part 1 may have a fixed payload size and may be used to identify the amount of information bits in CSI Part 2. UE 120 may send the entire CSI Part 1 before sending CSI Part 2. CSI Part 1 may include indications of RI (if reported), CQI, and the total amount of non-zero amplitude coefficients across layers. Fields of CSI Part 1 (e.g., RI (if reported), CQI, and the total amount of non-zero amplitude coefficients across layers) may be encoded separately by UE 120 (from CSI Part 2). CSI Part 2 may include indications of PMI. For example, CSI Part 2 may include time-domain base indexes and coefficients. Additionally, CSI Part 2 may include: a spatial domain subset indicator (SD base indicator) that indicates the spatial domain basis vector (i) selected for the RI layer of the pre-decoded matrix. 1,1 i 1,2 (e.g., the selected beam); a frequency domain subset indicator that indicates the frequency domain basis vectors (i) selected for each layer (0 to RI-1). 1,5 and i 1,6,l For each layer (0 to RI-1), the SCI indicates the relationship with the strongest coefficient (i). 1,8,l The associated SD base index (or SD and frequency domain base index); a layer bitmap that indicates the NZC (i) for each layer. 1,7,lThe associated time-domain base index, spatial-domain base index, and frequency-domain base index; and / or the selected NZC (i 2,3,l i 2,4,l i 2,5,l Quantification of ) ; etc.

[0105] In some aspects, in the third operation 730, network node 110 may transmit a reference signal (e.g., a downlink reference signal), and UE 120 may receive a reference signal (e.g., a downlink reference signal). For example, the reference signal may be CSI-RS, etc. CSI-RS may be aperiodic, semi-persistent, or periodic CSI-RS transmitted in bursts of CSI-RS timing (e.g., multiple CSI-RS timings occurring within a threshold time period). UE 120 may measure the CSI-RS in the CSI-RS timing burst to generate multiple CSI-RS observations. In the fourth operation 740, UE 120 may determine CSI or PMI information associated with the reference signal measurement in the CSI-RS timing burst, wherein the CSI or PMI information may include an extrapolated or predicted pre-decoder over a future time window, which is then compressed into the Doppler domain, as elsewhere herein (e.g., reference...). Figure 3C This is described in further detail. For example, UE 120 can perform measurements associated with various spatial domain basis candidates or frequency domain basis candidates as indicated by a codebook associated with a CSI report. UE 120 can select a spatial domain basis or a frequency domain basis based on the measurements. Additionally, UE 120 can select one or more time domain or Doppler domain bases. For example, UE 120 can observe (e.g., measure) multiple time instances (e.g., bases) of the PMI. UE 120 can then extrapolate one or more other time instances (e.g., bases) of the PMI, at least in part, based on the observed time instances.

[0106] In the fifth operation 750, UE 120 may perform CSI omission in response to determining (e.g., as indicated by network node 110 in the second operation 720) that uplink resources are insufficient to carry all CSI content generated by UE 120. As used herein, "insufficient" uplink resources can mean that the uplink resources are not large enough to carry all the information associated with one or more CSI reports to be transmitted via the uplink resources. For example, uplink resource allocation (e.g., PUSCH resource allocation) may be insufficient to carry the full content of one or more CSI reports. For example, CSI omission may occur when network node 110 does not allocate PUSCH resources accurately or adequately when scheduling CSI reports. For example, a network node may allocate resources for rank 1 (RI=1) CSI reports, but the UE may determine that rank 2 reports are being transmitted and that the report size exceeds the size of the allocated PUSCH resources. In other words, when network node 110 allocates uplink resources for a CSI report, network node 110 may not know the RI value that will be selected by UE 120. Therefore, in some cases, the allocated uplink resources may be insufficient (e.g., not large enough) to carry the entire contents of the CSI report. In such examples, UE 120 may omit some information from one or more CSI reports so that UE 120 can send other information via the insufficient uplink resources. When the CSI report on the PUSCH consists of two parts, UE 120 may omit a portion of CSI part 2. The omission of CSI part 2 may be performed according to the priority order of one or more groups associated with CSI part 2.

[0107] For example, groups can be associated with corresponding priority levels. When content associated with CSI section 2 for a specific priority level is omitted, UE 120 can omit all information for that priority level. For example, one or more groups may include: those associated with spatial domain beam index values ​​and strongest coefficient index values ​​(e.g., index...). (If reported) (If reported) and The first group associated with (e.g., group 0); and the frequency domain basis index values ​​and coefficient matrix. The first part of the NZC is associated with a second group (e.g., group 1), the coefficient matrix of which is associated with a Doppler domain base with index 0; and the first half of the NZC selection bitmap associated with the Doppler domain base with index 0. Furthermore, as described herein, one or more groups may include a third group (e.g., group 2), which is typically included last in the CSI report (e.g., in the case of a single CSI report) or omitted initially (e.g., in the case of multiple CSI reports) when the uplink resources allocated by network node 110 are insufficient to carry all CSI content generated by UE 120.

[0108] For example, in some respects, the content associated with group 2 of CSI part 2 (and therefore packaged last or omitted first) may include Doppler domain base selection (e.g., for selecting Doppler domain bases with indices greater than zero from those using...). (Selected from N4-1 Doppler bases). As described herein, time-domain base selection and Doppler base selection are Fourier transform pairs, therefore any references to Doppler base selection and time-domain base selection herein can be treated in the same or similar manner. Generally, because a Doppler base with index 0 is always selected for each layer, the UE120 may need to select only one additional Doppler base (with an index greater than 0) from the Doppler bases with indices from 1 to N4-1. Alternatively, in some cases, Doppler base selection may be associated with group 1 of CSI section 2 (and thus packed after group 0 or omitted after group 2), because Doppler base selection typically has a relatively small payload (e.g., Position, because Therefore, it corresponds to a maximum of 3 bits.

[0109] Additionally or alternatively, the contents associated with group 2 of CSI section 2 (and therefore either packaged last or omitted first) may include a coefficient matrix. At least a portion of the coefficient matrix indicates coefficient quantization associated with one or more Doppler domain bases having indices greater than 0. For example, Figure 7B The coefficient matrix is ​​described 752, the coefficient matrix includes a first set (shown in gray) of coefficients corresponding to Doppler basis selections with indices 0 (corresponding to q=0) and a second set (shown in white) of coefficients corresponding to Doppler basis selections with indices greater than 0 (corresponding to q=1). In this case, the content associated with group 2 of CSI section 2 may include content indicating the quantization of coefficients associated with Doppler basis selections with indices greater than 0 (corresponding to q=1).

[0110] For example, in some respects, with the coefficient matrix The associated NZC can be divided into two parts, each of which is equal to or approximately equal to the coefficient matrix. Half of NZC in the CSI, wherein the first part can be associated with group 1 of CSI part 2, and the second part can be associated with group 2 of CSI part 2. For example, in some aspects, the one with the highest priority Each NZC can be associated with group 1 of CSI part 2 and has the lowest priority remaining Each NZC can be associated with group 2 of CSI part 2, where This is the total number of NZCs (e.g., reported in CSI Part 1). Alternatively, in some aspects, the first portion of the NZCs associated with group 1 of CSI Part 2 may include NZCs associated with Doppler domain bases having index 0 (for all layers), and the second portion of the NZCs associated with group 2 of CSI Part 2 may include NZCs associated with Doppler domain bases greater than 0 (for all layers). Thus, in such cases, the NZCs associated with group 1 of CSI Part 2 represent only the time-invariant PMI and do not include the NZCs associated with group 2 of CSI Part 2. Furthermore, in some aspects, additional It can be included in CSI Part 1 (e.g., using Bit).

[0111] Additionally or alternatively, the contents associated with group 2 of CSI section 2 (and therefore either packaged last or omitted first) may include a coefficient matrix. At least a portion of the coefficient matrix indicates an NZC selection bitmap associated with one or more Doppler domain bases having indices greater than 0. For example, refer to Figure 7B Figure 754 depicts a set of bitmaps used to indicate the location of NZC, in which Q different 2D bitmaps are used, and each 2D bitmap reuses a legacy bitmap design (e.g., the size of the bitmap for each selected Doppler domain basis vector is 2LM). v ).

[0112] For example, such as Figure 7B As indicated by reference numeral 754 in the accompanying drawings, the three-dimensional (3D) bitmap includes a first 2D bitmap corresponding to a Doppler domain base with index 0 (corresponding to q=0) and a second 2D bitmap corresponding to a Doppler domain base selection with an index greater than 0 (corresponding to q=1). In such a case, the NZC selection bitmap may be divided into a first portion associated with group 1 of CSI section 2 and a second portion associated with group 2 of CSI section 2. For example, in some aspects, the first portion of the NZC selection associated with group 1 may include... Bits, and the second part of the NZC selection bitmap associated with group 2 may include Bits (e.g., similar to the older approach used for time-invariant CSI). Alternatively, since Q=2 (UE 120 is configured to report CSI associated with up to two Doppler domain bases), for the NZC selection bitmap associated with the selected Doppler domain base having an index of 0 (corresponding to q=0) and an index greater than 0 (corresponding to q=1), respectively, The bits are included in either group 1 or group 2 of CSI section 2. In other words, group 1 of CSI section 2 reports the NZC selection bitmap associated with the Doppler domain base having an index of 0, and group 2 of CSI section 2 reports the NZC selection bitmap associated with the Doppler domain base having an index greater than 0. In this case, based on rules (e.g., a “diamond” centered on SCI), each layer may include 2LM bits for each group, or a subset of 2LM bits for each layer.

[0113] Additional or alternative land, Figure 7B Reference numeral 756 in the figure illustrates the following example: a bitmap used to indicate the location of NZC includes: a size of The first 2D bitmap, used to report the frequency domain and Doppler domain basis vectors. The selected pairs; and the size is The second 2D bitmap, used to indicate the location of the NZC, has each row corresponding to the selected spatial domain basis vectors, and each column corresponding to the frequency domain and Doppler domain basis vectors. One of the selected pairs. In this case, in the first example, all pairs associated with the first graph. Bits and all associated with the second bitmap Bits may be associated with group 1 of CSI section 2, and no bits are associated with group 2 of CSI section 2. Alternatively, group 1 of CSI section 2 may include bits associated with the first bit diagram. The bits and their association with the first part of the second bitmap Bits, and group 2 of CSI part 2 may include the remainder of the second bitmap, which includes Bit.

[0114] Additionally or alternatively, the content associated with group 2 of CSI section 2 (and therefore either packaged last or omitted first) may include at least the CQI associated with any slot in the CSI window other than the first slot in the CSI window. For example, as referenced above. Figure 4 As described, the UE can be configured to report two CQIs in the time domain (e.g., the start and middle time slots based on the CSI window). For example, refer to... Figure 7BAs indicated by reference numeral 758 in the attached figure, UE 120 may report a CQI (X=1) in the time domain. In this case, the extrapolated or predicted CSI feedback may include the CQI value for the start time slot only within the CSI window. Additionally or alternatively, UE 120 may report the CQI value for the start time slot l and the end time slot l+W of the CSI window. SCI The average of the CQIs from -1 is used to report one CQI in the time domain (X=1). Alternatively, the UE 120 may report two CQIs in the time domain (X=2), where these two CQIs correspond to the start time slot l and the middle time slot of the CSI window, i.e., l+W of the CSI window. SCI / 2. Therefore, by omitting group 2 of CSI section 2, such that the coefficients reported to network node 110 are limited to time-invariant coefficients, the second CQI corresponding to the middle time slot of the CSI window may be wasted information unavailable to network node 110 because there is no time-series information associated with the second CQI corresponding to the middle time slot of the CSI window. In some respects, any CQI associated with time slots of the CSI window other than the first time slot (such as the CQI associated with the middle time slot of the CSI window) can therefore be associated with group 2 of CSI section 2, and thus omitted along with other contents included in group 2 of CSI section 2.

[0115] For example, when UE 120 is configured to report two CQIs in the time domain and the second CQI is reported independently of or different from the first CQI, the second CQI (e.g., at least a sub-band CQI in the frequency domain) may be associated with group 2 of CSI section 2. Alternatively, in some aspects, the second CQI in the time domain may be associated with group 0 of CSI section 1 or CSI section 2 (and therefore not omitted or omitted last). For example, when the second CQI in the time domain indicates a wideband CQI, the wideband CQI may be associated with group 0 of CSI section 1 or CSI section 2 because wideband CQIs are generally associated with small payload sizes, while one or more sub-band CQIs may be associated with group 2 of CSI section 2. Alternatively, in some aspects, both the wideband CQI and the sub-band CQI may be associated with group 0 of CSI section 1 or CSI section 2. In some aspects, in If the coefficients are not packed using the Doppler domain basis, wideband CQIs and / or subband CQIs may be packed in group 0 of CSI section 1 or CSI section 2, but the frequency domain is still used as the outermost index (e.g., PMI is still time-varying and may require time-domain CQIs, thus CQIs should have higher priority). Additionally or alternatively, if the UE 120 is configured to report one CQI in the time domain (e.g., when configured to report only a single-slot CQI or a single CQI by averaging the CQIs of the start and end slots of the CSI window), all wideband and subband CQIs in the frequency domain may be reported in CSI section 1 (e.g., following the legacy rules for reporting time-invariant CSIs).

[0116] Therefore, in Figure 7A In the fifth operation 750, UE 120 may perform CSI omission in response to insufficient uplink resources to be used for transmitting CSI (e.g., taking into account the time-varying CSI content included in the various groups of CSI Part 2). For example, the size of the uplink resources may be insufficient to carry all the content generated for the CSI report. In such an example, UE 120 may include CSI content in the following order (e.g., packing order): first, information associated with a first group (e.g., group 0 of CSI Part 2); second, content associated with a second group (e.g., group 1 of CSI Part 2); and third (e.g., last), content associated with a third group (e.g., group 2 of CSI Part 2). In other words, UE 120 may omit information associated with at least one group from one or more groups, at least in part, based on prioritizing one or more groups (e.g., prioritizing the first group over the second and third groups and prioritizing the second group over the third group).

[0117] In some respects, uplink resources (e.g., PUSCH) may be associated with multiple CSI reports. In such examples, UE 120 may omit information associated with one or more CSI reports based at least in part on prioritizing the CSI reports from multiple CSI reports according to the order of their index values. For example, in addition to prioritizing a group of given CSI reports, UE 120 may also prioritize multiple CSI reports based on their index values. For example, CSI report 0 may have a higher priority than CSI report 1, CSI report 1 may have a higher priority than CSI report 2, and so on.

[0118] In the sixth operation 760, UE 120 may use uplink resources (e.g., the uplink resources indicated by network node 110 in the second operation 720) to transmit a UCI (e.g., information indicating association with one or more CSI reports), and network node 110 may use uplink resources (e.g., the uplink resources indicated by network node 110 in the second operation 720) to receive a UCI (e.g., information indicating association with one or more CSI reports). For example, UE 120 may transmit a UCI that includes a CSI report indicating a PMI value (e.g., base index and NZC, etc.). The UCI may be associated with one or more groups used for packing priority of uplink resources, as explained in more detail elsewhere herein. In some aspects, UE 120 may avoid transmitting some information associated with CSI reports, at least in part, based on performing CSI omission (e.g., in the fifth operation 750). For example, UE 120 may avoid including one or more content types associated with Group 2 according to a CSI omission rule that indicates that CSI content will be packaged in the CSI report in the following order: content associated with Group 0 is included in the CSI report first, then content associated with Group 1 is included only if there is sufficient remaining space in the uplink allocation after all Group 0 content has been packaged, and further, content associated with Group 2 is included only if there is sufficient remaining space in the uplink allocation after all Group 0 and Group 1 content has been packaged.

[0119] For example, Figure 7C The example CSI Part 2 packing order is depicted, which can be used to associate content with a single CSI report in a manner further described in detail herein. In the illustrated example, the CSI content generated by UE 120 includes the Doppler domain base selection and the CQI for the end gap of the CSI window, which are associated with Group 2 of CSI Part 2 in the illustrated example (however, it should be noted that in some examples, the Doppler domain base selection may be packed in Group 1, as described elsewhere in this document). Therefore, if UE 120 omits Group 2 of CSI Part 2 or does not pack Group 2 of CSI Part 2 into the CSI report, the Doppler domain base selection and the CQI for the end gap of the CSI window, along with... The lowest priority NZC and NZC selection bitmap The lowest priority bits are omitted from or not included in the CSI report.

[0120] Network node 110 may determine one or more communication parameters for UE 120 based at least in part on information included in the CSI report. For example, network node 110 may determine the pre-decoder based at least in part on the PMI included in the CSI report. UE 120 and network node 110 (e.g., RU) may use one or more communication parameters determined by network node 110 or another network node 110 (e.g., DU or CU) to communicate (e.g., send or receive).

[0121] Figure 8 This is a flowchart illustrating an example procedure 800 performed by a UE, for example, to support time-invariant and time-varying segmentation for Doppler CSI, according to this disclosure. Example procedure 800 is an example in which a UE (e.g., UE 120) performs operations associated with time-invariant and time-varying segmentation for Doppler CSI.

[0122] like Figure 8 As shown, in some aspects, process 800 may include: receiving CSI-RS in each of a plurality of CSI-RS times (block 810). For example, a UE (such as by using...) Figure 9 The communication manager 906 or receiving component 902 depicted herein can receive CSI-RS in each of a plurality of CSI-RS times, as described above.

[0123] like Figure 8 As further shown, in some aspects, process 800 may include: sending a CSI report to a network node that is associated with measurements in multiple CSI-RS moments and with one or more time-invariant CSI content types, and the CSI report omitting at least a portion of second CSI content associated with measurements in multiple CSI-RS moments and with one or more time-varying CSI content types in association with one or more omission rules associated with the CSI report (box 820). For example, a UE (such as by using...) Figure 9 The communication manager 906 or transmitting component 904 described herein may transmit to a network node a CSI report associated with measurements in multiple CSI-RS times and associated with one or more time-invariant CSI content types, and the CSI report may omit at least a portion of a second CSI content associated with measurements in multiple CSI-RS times and associated with one or more time-invariant CSI content types, as described above, in association with one or more omission rules associated with the CSI report.

[0124] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described in conjunction with one or more other processes described elsewhere herein.

[0125] In the first additional aspect, the portion of the second CSI content omitted from the CSI report is associated with group 2 of CSI section 2.

[0126] In a second additional aspect, either alone or in combination with the first aspect, a portion of the second CSI content omitted from the CSI report includes Doppler geometry for future time windows.

[0127] In a third additional aspect, either alone or in combination with one or more of the first and second aspects, the portion of the second CSI content omitted from the CSI report includes at least a portion of the quantized NZC associated with the non-zero Doppler base.

[0128] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the portion of the quantified NZC omitted from the CSI report includes half of the quantified NZC associated with the lowest priority.

[0129] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, the portion of the quantified NZC omitted from the CSI report includes a portion of the quantified NZC associated with the non-zero Doppler base used for future time windows.

[0130] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, a portion of the second CSI content omitted from the CSI report includes at least a portion of the NZC selection bitmap associated with the non-zero Doppler base for future time windows.

[0131] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the portion of the NZC selection bitmap omitted from the CSI report includes at least in part the number of bits based on: rank, the size of the NZC selection bitmap for each Doppler level, and the number of different bitmaps included in the CSI report.

[0132] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, a first NZC selection bitmap associated with zero Doppler bases is included in group 1 of CSI section 2, and a second NZC selection bitmap associated with non-zero Doppler bases is included in group 2 of CSI section 2.

[0133] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, a portion of the NZC selection bitmap omitted from the CSI report includes at least in part the number of bits based on: rank, the first size of the first bitmap used to report the number of selected pairs of frequency basis vectors and Doppler basis vectors, and the second size of the second bitmap used to report the location of the NZC selection.

[0134] In the tenth additional aspect, either alone or in combination with one or more of the first to ninth aspects, a portion of the second CSI content omitted from the CSI report includes CQI for one or more slots in the CSI window other than the initial slot.

[0135] In the eleventh additional aspect, either alone or in combination with one or more of the first to tenth aspects, the CQI omitted from the CSI report includes one or more sub-band CQIs in the frequency domain.

[0136] In the twelfth additional aspect, one or more Doppler options are included in Group 1 of the CSI report, either alone or in combination with one or more of the first to eleventh aspects.

[0137] In the thirteenth additional aspect, either alone or in combination with one or more of the first to twelfth aspects, one or more CQIs in the time domain are included in group 1 or group 0 of the CSI report or in CSI section 1.

[0138] although Figure 8 An example box of process 800 is shown, but in some respects, process 800 may include... Figure 8 The boxes depicted in the process 800 may be additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively or additionally, two or more boxes in the process 800 may be executed in parallel.

[0139] Figure 9 This is a diagram of an example device 900 for wireless communication supporting time-invariant and time-varying segmentation for Doppler CSI according to this disclosure. Device 900 may be a UE, or a UE may include device 900. In some aspects, device 900 includes a receiving component 902, a transmitting component 904, and a communication manager 906 that can communicate with each other (e.g., via one or more buses). As shown, device 900 can use the receiving component 902 and the transmitting component 904 to communicate with another device 908 (such as a UE, a network node, or another wireless communication device).

[0140] In some respects, device 900 is operable to perform the functions described herein. Figures 7A to 7COne or more operations described herein. Additionally or alternatively, device 900 is operable to perform one or more processes described herein, such as... Figure 8 The process 800. In some aspects, the device 900 may include the above-described combination. Figure 2 One or more components of the UE as described.

[0141] Receiver 902 may receive communications from device 908, such as reference signals, control information, and / or data communications. Receiver 902 may provide the received communications to one or more other components of device 900, such as communication manager 906. In some aspects, receiver 902 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components. In some aspects, receiver 902 may include the combinations described above. Figure 2 The described UE includes one or more antennas, modems, demodulators, MIMO detectors, receiver processors, controllers / processors, and / or memory.

[0142] Transmitting component 904 can transmit communications, such as reference signals, control information, and / or data communications, to device 908. In some aspects, communication manager 906 can generate communications and transmit the generated communications to transmitting component 904 for transmission to device 908. In some aspects, transmitting component 904 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and transmit the processed signals to device 908. In some aspects, transmitting component 904 can include the combinations described above. Figure 2 The described UE includes one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, and / or memory. In some aspects, the transmit component 904 may be co-located with the receive component 902 in a transceiver.

[0143] Communication manager 906 may receive CSI-RS at each of a plurality of CSI-RS times, or may cause receiving component 902 to receive CSI-RS at each of a plurality of CSI-RS times. Communication manager 906 may send a CSI report to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types, or may cause sending component 904 to send a CSI report to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types, and the CSI report omits at least a portion of second CSI content associated with measurements in the plurality of CSI-RS times and with one or more time-varying CSI content types, in association with one or more omission rules associated with the CSI report. In some aspects, communication manager 906 may perform one or more operations as described elsewhere herein as being performed by one or more components of communication manager 906.

[0144] Communication Manager 906 may include the above-mentioned features. Figure 2 The described UE includes a controller / processor and / or memory. In some aspects, the communication manager 906 includes a collection of components. Alternatively, this collection of components may be separate from and distinct from the communication manager 906. In some aspects, one or more components in this collection may include those described above. Figure 2 The described UE's controller / processor and / or memory, or may be implemented therein. Additionally or alternatively, one or more components in this set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0145] The receiving component 902 can receive CSI-RS in each of the multiple CSI-RS times. The transmitting component 904 can transmit to the network node a CSI report associated with measurements in the multiple CSI-RS times and associated with one or more time-varying CSI content types, and the CSI report omits at least a portion of second CSI content associated with measurements in the multiple CSI-RS times and associated with one or more time-varying CSI content types in association with one or more omission rules associated with the CSI report.

[0146] Figure 9 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 9 The components shown are compared to additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 9 The two or more components shown can be implemented within a single component, or Figure 9 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 9 The collection of (one or more) components shown can perform actions described as being performed by Figure 9 The set of other components shown performs one or more functions.

[0147] The following provides an overview of some aspects of this disclosure:

[0148] Aspect 1: A method for wireless communication performed by a UE, the method comprising: receiving a CSI-RS at each of a plurality of CSI-RS times; and sending to a network node a CSI report associated with a measurement in the plurality of CSI-RS times and associated with one or more time-invariant CSI content types, wherein the CSI report omits at least a portion of a second CSI content associated with the measurement in the plurality of CSI-RS times and associated with one or more time-invariant CSI content types in association with one or more omission rules associated with the CSI report.

[0149] Aspect 2: According to the method of aspect 1, the portion of the second CSI content omitted from the CSI report is associated with group 2 of CSI section 2.

[0150] Aspect 3: The method according to any one of Aspects 1 to 2, wherein the portion of the second CSI content omitted from the CSI report includes a Doppler profile for a future time window.

[0151] Aspect 4: The method according to any one of Aspects 1 to 3, wherein the portion of the second CSI content omitted from the CSI report includes at least a portion of the quantized NZC associated with a non-zero Doppler base.

[0152] Aspect 5: According to the method of aspect 4, the portion of the quantified NZC omitted from the CSI report includes half of the quantified NZC associated with the lowest priority.

[0153] Aspect 6: According to the method of aspect 4, the portion of the quantized NZC omitted from the CSI report includes a portion of the quantized NZC associated with a non-zero Doppler base for a future time window.

[0154] Aspect 7: The method according to any one of Aspects 1 to 6, wherein the portion of the second CSI content omitted from the CSI report includes at least a portion of the NZC selection bitmap associated with a non-zero Doppler base for a future time window.

[0155] Aspect 8: According to the method of aspect 7, the portion of the NZC selection bitmap omitted from the CSI report includes at least in part the number of bits based on the following: rank, size of the NZC selection bitmap for each Doppler base, and number of different bitmaps included in the CSI report.

[0156] Aspect 9: According to the method of aspect 7, a first NZC selection bitmap associated with a zero Doppler base is included in group 1 of CSI section 2, and a second NZC selection bitmap associated with a non-zero Doppler base is included in group 2 of CSI section 2.

[0157] Aspect 10: According to the method of aspect 7, the portion of the NZC selection bitmap omitted from the CSI report includes at least in part the number of bits based on the following: rank, a first size of the first bitmap for reporting the number of selected pairs of frequency basis vectors and Doppler basis vectors, and a second size of the second bitmap for reporting the location of the NZC selection.

[0158] Aspect 11: The method according to any one of Aspects 1 to 10, wherein the portion of the second CSI content omitted from the CSI report includes CQI for one or more time slots in the CSI window other than the initial time slot.

[0159] Aspect 12: The method according to aspect 11, wherein the CQI omitted from the CSI report includes one or more sub-band CQIs in the frequency domain.

[0160] Aspect 13: The method according to any one of aspects 1 to 12, wherein one or more Doppler selections are included in group 1 of the CSI report.

[0161] Aspect 14: The method according to any one of Aspects 1 to 13, wherein one or more CQIs in the time domain are included in Group 1 or Group 0 of the CSI report or are included in CSI Section 1.

[0162] Aspect 15: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods according to aspects 1 to 14.

[0163] Aspect 16: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors being configured to perform the method according to one or more of aspects 1 to 14.

[0164] Aspect 17: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 14.

[0165] Aspect 18: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the method according to one or more of aspects 1 to 14.

[0166] Aspect 19: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1 to 14.

[0167] While the foregoing disclosure provides examples and descriptions, it is not intended to be exhaustive or to limit aspects to the precise forms disclosed. Modifications and variations may be made based on the foregoing disclosure, or from practice of these aspects.

[0168] As used herein, the term "component" is intended to be broadly interpreted as hardware or a combination of at least one of hardware and software or firmware. "Software" should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, threads of execution, procedures, or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. As used herein, a "processor" is implemented in hardware or a combination of hardware and software. It will be apparent that the systems or methods described herein may be implemented in various forms of hardware or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems or methods is not limited in any way. Therefore, the operation and behavior of these systems or methods are described herein without reference to any specific software code, as those skilled in the art will understand that the software and hardware can be designed to implement these systems or methods, at least in part, based on the description herein.

[0169] As used in this article, depending on the context, "meeting the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0170] Although specific combinations of features are set forth in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically stated in the claims or disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with each other claim in the set of claims. As used herein, the phrase referring to “at least one of” in the list of items refers to any combination of these items (including a single member). As an example, “at least one of the following: a, b, or c” is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination with multiple of the same element (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 order of a, b, and c).

[0171] Unless explicitly stated otherwise, no element, action, or instruction used herein should be construed as essential or necessary. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are used interchangeably with “one or more.” Similarly, as used herein, the article “described” is intended to include one or more items mentioned in connection with the article “described” and is used interchangeably with “one or more.” Furthermore, as used herein, the terms “collection” and “group” are intended to include one or more items and are used interchangeably with “one or more.” If only one item is desired, the phrase “only one” or similar terminology is used. Moreover, as used herein, the terms “having,” “containing,” “including,” and similar terms are intended as open-ended terms that do not limit the elements they modify (e.g., the element “containing” A may also contain B). Additionally, unless explicitly stated otherwise, the phrase “based on” is intended to mean “based on or otherwise associated with.” Furthermore, as used herein, the term “or” is intended to be inclusive when used consecutively and is interchangeable with “and / or” unless otherwise expressly stated (e.g., if used in conjunction with “either of the two” or “only one of them”).

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: At least one memory; and At least one processor, the at least one processor being coupled to the at least one memory and being operable to enable the UE to: Receive CSI-RS in each CSI-RS timing among multiple Channel State Information (CSI) Reference Signal (CSI-RS) timings; as well as A CSI report is sent to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types, and the CSI report omits at least a portion of a second CSI content associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types in association with one or more omission rules associated with the CSI report.

2. The UE of claim 1, wherein the portion of the second CSI content omitted from the CSI report is associated with group 2 of CSI section 2.

3. The UE of claim 1, wherein the portion of the second CSI content omitted from the CSI report includes a Doppler spectrum for a future time window.

4. The UE of claim 1, wherein the portion of the second CSI content omitted from the CSI report includes at least a portion of the quantized nonzero coefficients associated with the nonzero Doppler base.

5. The UE of claim 4, wherein the portion of the quantized nonzero coefficient omitted from the CSI report includes half of the quantized nonzero coefficient associated with the lowest priority.

6. The UE of claim 4, wherein the portion of the quantized nonzero coefficients omitted from the CSI report includes a portion of the quantized nonzero coefficients associated with the nonzero Doppler base for future time windows.

7. The UE of claim 1, wherein the portion of the second CSI content omitted from the CSI report includes at least a portion of a non-zero coefficient selection bitmap associated with a non-zero Doppler base for a future time window.

8. The UE of claim 7, wherein the portion of the non-zero coefficient selection bitmap omitted from the CSI report comprises at least in part the number of bits based on: rank, size of the non-zero coefficient selection bitmap for each Doppler base, and number of different bitmaps included in the CSI report.

9. The UE of claim 7, wherein a first non-zero coefficient selection bitmap associated with a zero Doppler base is included in group 1 of CSI section 2, and wherein a second non-zero coefficient selection bitmap associated with a non-zero Doppler base is included in group 2 of CSI section 2.

10. The UE of claim 7, wherein the portion of the non-zero coefficient selection bitmap omitted from the CSI report comprises at least in part bit depth based on: rank, a first size of the first bitmap for reporting the number of selected pairs of frequency basis vectors and Doppler basis vectors, and a second size of the second bitmap for reporting the position of the non-zero coefficient selection.

11. The UE of claim 1, wherein the portion of the second CSI content omitted from the CSI report includes channel quality indications (CQI) for one or more time slots in the CSI window other than the initial time slot.

12. The UE of claim 11, wherein the CQI omitted from the CSI report includes one or more sub-band CQIs in the frequency domain.

13. The UE of claim 1, wherein one or more Doppler selections are included in group 1 of the CSI report.

14. The UE of claim 1, wherein one or more Channel Quality Indicators (CQIs) in the time domain are included in group 1 or group 0 of the CSI report or are included in CSI section 1.

15. A method for wireless communication performed by a user equipment (UE), the method comprising: Receive CSI-RS in each CSI-RS timing among multiple Channel State Information (CSI) Reference Signal (CSI-RS) timings; as well as A CSI report is sent to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types, and the CSI report omits at least a portion of a second CSI content associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types in association with one or more omission rules associated with the CSI report.

16. The method of claim 15, wherein the portion of the second CSI content omitted from the CSI report is associated with group 2 of CSI section 2.

17. The method of claim 15, wherein the portion of the second CSI content omitted from the CSI report includes a Doppler profile for a future time window.

18. The method of claim 15, wherein the portion of the second CSI content omitted from the CSI report includes at least a portion of the quantized nonzero coefficients associated with the nonzero Doppler base.

19. The method of claim 18, wherein the portion of the quantized nonzero coefficient omitted from the CSI report includes half of the quantized nonzero coefficient associated with the lowest priority.

20. The method of claim 18, wherein the portion of the quantized nonzero coefficients omitted from the CSI report includes a portion of the quantized nonzero coefficients associated with the nonzero Doppler base for future time windows.

21. The method of claim 15, wherein the portion of the second CSI content omitted from the CSI report includes at least a portion of a non-zero coefficient selection bitmap associated with a non-zero Doppler base for a future time window.

22. The method of claim 21, wherein the portion of the non-zero coefficient selection bitmap omitted from the CSI report comprises at least in part the number of bits based on: rank, the size of the non-zero coefficient selection bitmap for each Doppler base, and the number of different bitmaps included in the CSI report.

23. The method of claim 21, wherein a first non-zero coefficient selection bitmap associated with a zero Doppler base is included in group 1 of CSI section 2, and wherein a second non-zero coefficient selection bitmap associated with a non-zero Doppler base is included in group 2 of CSI section 2.

24. The method of claim 21, wherein the portion of the non-zero coefficient selection bitmap omitted from the CSI report comprises at least in part based on the following bit lengths: rank, a first size of the first bitmap for reporting the number of selected pairs of frequency basis vectors and Doppler basis vectors, and a second size of the second bitmap for reporting the position of the non-zero coefficient selection.

25. The method of claim 15, wherein the portion of the second CSI content omitted from the CSI report includes channel quality indications (CQI) for one or more time slots in the CSI window other than the initial time slot.

26. The method of claim 25, wherein the CQI omitted from the CSI report includes one or more sub-band CQIs in the frequency domain.

27. The method of claim 15, wherein one or more Doppler selections are included in group 1 of the CSI report.

28. The method of claim 15, wherein one or more Channel Quality Indicators (CQIs) in the time domain are included in group 1 or group 0 of the CSI report or in CSI section 1.

29. 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 user equipment (UE), cause the UE to: Receive CSI-RS in each CSI-RS timing among multiple Channel State Information (CSI) Reference Signal (CSI-RS) timings; as well as A CSI report is sent to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types, and the CSI report omits at least a portion of a second CSI content associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types in association with one or more omission rules associated with the CSI report.

30. An apparatus for wireless communication, the apparatus comprising: A component for receiving CSI-RS in each CSI-RS timing among multiple Channel State Information (CSI) Reference Signal (CSI-RS) timings; as well as A component for sending a CSI report to a network node that is associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types, and the CSI report omits at least a portion of second CSI content associated with measurements in the plurality of CSI-RS times and with one or more time-invariant CSI content types in association with one or more omission rules associated with the CSI report.

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