Codebook subset restriction for time domain channel state information

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive information associated with a codebook subset restriction (CBSR) for type II Doppler channel state information (CSI), where the information associated with the CBSR indicates broadband power restrictions for one or more spatial domain (SD) bases in the time domain for a layer. The UE may transmit type II Doppler channel state information (CSI) according to the CBSR. Numerous other aspects are described.

Description

Technical Field

[0001] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for codebook subset restriction (CBSR) for time-domain channel state information (CSI). Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0003] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, among other examples).

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

[0005] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving information associated with a codebook subset restriction (CBSR) for type II Doppler channel state information (CSI), wherein the information associated with the CBSR indicates wideband power restrictions for one or more spatial domain (SD) bases in a time domain for a layer. The method may include sending type II Doppler CSI according to the CBSR.

[0006] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include: sending information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit for one or more SD bases in a time domain for a layer. The method may include: receiving the Type II Doppler CSI based on the CBSR.

[0007] Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to: receive information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit of one or more SD bases in a time domain for a layer. The one or more processors may be configured to: send Type II Doppler CSI according to the CBSR.

[0008] Some aspects described herein relate to a network node for wireless communication. The network node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to: send information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit of one or more SD bases in a time domain for a layer. The one or more processors may be configured to: receive the Type II Doppler CSI according to the CBSR.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive information associated with a CBSR for a Type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit of one or more SD bases in a time domain for a layer. The set of instructions, when executed by one or more processors of the UE, may cause the UE to send a Type II Doppler CSI according to the CBSR.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to send information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in a time domain for a layer. The set of instructions, when executed by one or more processors of the network node, may cause the network node to receive Type II Doppler CSI according to the CBSR.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in a time domain for a layer. The apparatus may include means for sending the Type II Doppler CSI according to the CBSR.

[0012] Some aspects described herein are directed to an apparatus for wireless communication. The apparatus may include means for sending information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in a time domain for a layer. The apparatus may include means for receiving Type II Doppler CSI based on the CBSR.

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

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

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

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

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

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

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

[0020] Figure 4 is a diagram illustrating an example of physical channels and reference signals in a wireless network according to the present disclosure.

[0021] FIG. 5A to FIG. 5E is a diagram illustrating an example set of codebook structures according to the present disclosure.

[0022] Figure 6is a diagram illustrating an example associated with codebook subset restriction (CBSR) for time domain channel state information (CSI) according to aspects of the present disclosure.

[0023] Figure 7 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0024] Figure 8 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0025] Fig. 9 and Fig.10 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

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

[0027] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

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

[0029] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network or may include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). For another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0030] In some examples, the network node 110 is or includes a network node (such as an RU) that communicates with the UE 120 via a radio access link. In some examples, the network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, the network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, the network node 110 may include an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks, using any suitable transport network.

[0031] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0032] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with the network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0033] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

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

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

[0036] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0037] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, a processor component and a memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0038] In general, any number of wireless networks 100 may be deployed in a corresponding geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, an air interface, etc. Frequency may be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a corresponding geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

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

[0040] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the “below 6 GHz” band in various documents and articles. Similar naming issues sometimes occur with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

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

[0042] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0043] In some aspects, the UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive information associated with a codebook subset restriction (CBSR) for type II Doppler channel state information (CSI), wherein the information associated with the CBSR indicates wideband power restrictions for one or more spatial domain (SD) bases in the time domain for a layer; and send the type II Doppler CSI according to the CBSR. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0044] In some aspects, the network node may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may send information associated with a CBSR for a Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in a time domain for a layer; and receive the Type II Doppler CSI based on the CBSR. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

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

[0046] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0047] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas) (shown as antennas 234a through 234t).

[0048] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

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

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

[0051] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by a TX MIMO processor 266, where applicable, further processed by a modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, reference Figures 6 to 10 ) or any aspect of any of the methods described herein.

[0052] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232 shown as DEMOD), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform the operations described herein (e.g., with reference to Figures 6 to 10 ) or any aspect of any of the methods described herein.

[0053] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 7 The process 700 Figure 8 800 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion and / or interpretation), may cause the one or more processors, the UE 120 and / or the network node 110 to perform or direct, for example, Figure 7 The process 700 Figure 8 The process 800 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0054] In some aspects, the UE 120 includes: means for receiving information associated with a CBSR for type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit for one or more SD bases in the time domain for a layer; and means for sending type II Doppler CSI according to the CBSR. Means for the UE 120 to perform operations described herein may include, for example, one or more of the following: the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0055] In some aspects, the network node 110 includes: a means for sending information associated with a CBSR for type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit of one or more SD bases in the time domain for a layer; and a means for receiving type II Doppler CSI according to the CBSR. In some aspects, the means for the network node 110 to perform operations described herein may include, for example, one or more of the following: a communication manager 150, a transmit processor 220, a TX MIMO processor 230, a modem 232, an antenna 234, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0056] Although Figure 2 The blocks in the 200 and 210 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

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

[0058] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5GNR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0059] An aggregated base station (e.g., an aggregated network node) can be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) can be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU can be implemented within a network node, and one or more DUs can be co-located with the CU, or alternatively, can be geographically or virtually distributed across one or more other network nodes. The DU can be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

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

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

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

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

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

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

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

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

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

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

[0070] Figure 4 4 is a diagram illustrating an example 400 of physical channels and reference signals in a wireless network according to the present disclosure. Figure 4 As shown, the downlink channel and the downlink reference signal may carry information from the network node 110 to the UE 120 , and the uplink channel and the uplink reference signal may carry information from the UE 120 to the network node 110 .

[0071] As shown, the downlink channels may include a physical downlink control channel (PDCCH) carrying downlink control information (DCI), a physical downlink shared channel (PDSCH) carrying downlink data, or a physical broadcast channel (PBCH) carrying system information, etc. In some aspects, PDSCH communications may be scheduled by PDCCH communications. As further shown, uplink channels may include a physical uplink control channel (PUCCH) carrying uplink control information (UCI), a physical uplink shared channel (PUSCH) carrying uplink data, or a PRACH for initial network access, as well as other examples. In some aspects, UE 120 may send acknowledgement (ACK) or negative acknowledgement (NACK) feedback (e.g., ACK / NACK feedback or ACK / NACK information) in the UCI on the PUCCH and / or PUSCH.

[0072] As further shown in the figure, the downlink reference signal may include a synchronization signal block (SSB), a CSI reference signal (CSI-RS), a DMRS, a positioning reference signal (PRS), or a phase tracking reference signal (PTRS), etc. As also shown in the figure, the uplink reference signal may include a sounding reference signal (SRS), a DMRS, or a PTRS, etc.

[0073] The SSB may carry information used for initial network acquisition and synchronization, such as PSS, SSS, PBCH, and PBCH DMRS. The SSB is sometimes referred to as a synchronization signal / PBCH (SS / PBCH) block. In some aspects, the network node 110 may send multiple SSBs on multiple corresponding beams, and the SSBs may be used for beam selection.

[0074] The CSI-RS may carry information for downlink channel estimation (e.g., downlink CSI acquisition), which may be used for scheduling, link adaptation, or beam management, etc. The network node 110 may configure a CSI-RS set for the UE 120, and the UE 120 may measure the configured CSI-RS set. Based at least in part on the measurements, the UE 120 may perform channel estimation and may report channel estimation parameters (e.g., in a CSI report) such as CQI, a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a layer indicator (LI), a rank indicator (RI), or RSRP, etc., to the network node 110. The network node 110 may use the CSI report to select transmission parameters for downlink communication with the UE 120, such as the number of transmission layers (e.g., rank), a precoding matrix (e.g., a precoder), an MCS, or a refined downlink beam (e.g., using a beam refinement procedure or a beam management procedure), etc. Generally, a UE (e.g., UE 120) receives one or more CSI-RS when generating CSI, such as Type II Doppler CSI (also known as time domain CSI). In some aspects, the techniques and apparatus described herein in association with CBSR for time domain CSI may be used to generate or transmit CSI reports, such as with respect to Figure 4 described.

[0075] DMRS may carry information used to estimate a radio channel to demodulate an associated physical channel (e.g., PDCCH, PDSCH, PBCH, PUCCH, or PUSCH). The design and mapping of DMRS may be specific to the physical channel that the DMRS is used to estimate. DMRS is UE-specific, may be beamformed, may be restricted to scheduled resources (e.g., rather than being sent over a wideband), and may be sent only when necessary. As shown, DMRS is used for both downlink and uplink communications.

[0076] PTRS can carry information for compensating for oscillator phase noise. Typically, phase noise increases with increasing oscillator carrier frequency. Therefore, PTRS can be used at high carrier frequencies (such as millimeter wave frequencies) to mitigate phase noise. PTRS can be used to track the phase of the local oscillator and to achieve suppression of phase noise and common phase error (CPE). As shown, PTRS is used for both downlink communications (e.g., on PDSCH) and uplink communications (e.g., on PUSCH).

[0077] The PRS may carry information for implementing timing or ranging measurements of the UE 120 based on signals sent by the network node 110 to improve observed time difference of arrival (OTDOA) positioning performance. For example, the PRS may be a pseudo-random quadrature phase shift keying (QPSK) sequence mapped in a diagonal pattern with a frequency offset and a time offset to avoid collisions with cell-specific reference signals and control channels (e.g., PDCCH). In general, the PRS may be designed to improve detectability of the UE 120, which may be configured to detect downlink signals from multiple neighboring network nodes in order to perform OTDOA-based positioning. Thus, the UE 120 may receive the PRS from multiple cells (e.g., a reference cell and one or more neighboring cells), and may report a reference signal time difference (RSTD) based on OTDOA measurements associated with the PRS received from the multiple cells. In some aspects, the network node 110 may then calculate the position of the UE 120 based on the RSTD measurements reported by the UE 120.

[0078] The SRS may carry information for uplink channel estimation, which may be used for scheduling, link adaptation, pre-decoder selection, or beam management, etc. The network node 110 may configure one or more SRS resource sets for the UE 120, and the UE 120 may send the SRS on the configured SRS resource sets. The SRS resource sets may have configured usages, such as uplink CSI acquisition, downlink CSI acquisition for reciprocity-based operation, uplink beam management, etc. The network node 110 may measure the SRS, may perform channel estimation based at least in part on these measurements, and may use the SRS measurements to configure communications with the UE 120.

[0079] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 Different than described.

[0080] FIG. 5A to FIG. 5E is a diagram illustrating a set of examples 500 of codebook structures according to the present disclosure.

[0081] Figure 5AAn example of a precoder for 3GPP Release 16 (Rel-16) eType-II CSI supporting up to rank 4 is shown. Each layer (e.g., layers 0 to 3 as shown) corresponds to a different data stream. For each layer, the precoder across the number N3 PMI subbands is N t ×N3 matrix W such that In this case, W1 is common to the layers, represents the discrete Fourier transform (DFT) basis, and is N t ×2 LSD basis matrix (which may also be called a “beam”), where N t is configured by RRC, and N t =2N1O1N2O2, which represents the number of transmit antennas with O1 and O2 oversampling. In addition, is layer-specific, represents the DFT basis, and is an M×N3 frequency-domain basis matrix, where M represents the number of frequency-domain bases and is rank-pair specific, such that for rank {1,2}, M1=M2, and for rank {3,4}, M3=M4 (and M1 or M3 is RRC configured). In addition, is layer-specific and forms a 2L×M matrix with up to K0 non-zero coefficients for each layer (and where K0 is an RRC configured parameter). Across all layers, the UE may report up to 2K0 non-zero coefficients, where unreported coefficients are set to zero. Figure 5B Another example of a pre-decoder for a Rel-16e Type-IICSI pre-coding matrix for a layer is shown, where Where W1 represents the selected space domain basis, represents the selected frequency domain basis, and represents the coefficient matrix, as described in more detail above.

[0082] Figure 5C The pre-coding matrix can be used to represent the rapid changes at time instance n. In this case, the coefficient matrix of n=0,…,N4–1 can be compressed into the Doppler domain. In addition, the spatial domain basis and the frequency domain basis (W1 and ) is constant at time instance n. It is worth noting that the coefficient matrix Compression to the Doppler domain reduces the reporting overhead. The CSI generated using the time domain codebook can be called Type II Doppler CSI or time domain CSI. Therefore, in order to construct the precoding matrix, the UE may report one or more CSI-RS observations (N ob =N4, where N obIndicates the number of observations), compression is performed at the UE and prediction is performed at the network node (e.g., base station). Additionally or alternatively, the UE may report the one or more CSI-RS observation and extrapolation sets so that both compression and prediction are performed at the UE.

[0083] Figure 5D and Figure 5E An example of a possible codebook structure is shown. Figure 5D The first possible codebook structure can be expressed as in represents the Kronecker product, and is the selected time domain (TD) basis set. Similarly, in Figure 5E The second possible codebook structure can be expressed as In both the first possible codebook structure and the second possible codebook structure, comprises the same set of entries but in an alternative arrangement. For example, in a first possible codebook structure, The arrangement is 2LM×S, and in the second possible codebook structure, The arrangement of is 2L×MS. In each possible codebook, the TD basis selection is common to all beams. In other words, for All rows of use a common W (e.g., with a selected subset of S=2 TD bases) t .

[0084] As indicated above, FIG. 5A to FIG. 5E are provided as examples. Other examples can be found in the FIG. 5A to FIG. 5E Different than described.

[0085] In a wireless communication system, it may be advantageous to restrict the set of precoding matrix candidates that can be selected from a codebook to generate CSI. For example, a network node may restrict the set of precoding matrix candidates that a UE may select to provide interference reduction or mitigation in one or more spatial directions in a wireless communication system. Such restrictions are referred to as CBSR.

[0086] To implement CBSR for Rel-16e Type-II codebook, the network node may configure the bit sequence B=B1B2 for the UE 120 for frequency domain (FD) average power limitation of certain SD bases. Here, B1 represents four selected SD oversampling groups, using bits (e.g., for oversampling factors O1=4 and O2=4, B1 is 11 bits). B2 represents the power limit for each spatial basis in the selected SD oversampling group, where two bits (soft limit) are used to represent the maximum amplitude γ of each SD basis i for both polarizations p=0,1 iThe SD basis may correspond to or be associated with a specific direction or a specific beam. More specifically, the SD basis may be described by the following values:

[0087]

[0088] The value of N1 and the value of N2 are configured by higher layer parameters (eg, n1 to n2, respectively).

[0089] For four SD oversampling groups, each SD oversampling group has N1N2 SD bases, and a total of 8N1N2 bits are used for B2. Regarding the CBSR of the Rel-16eType-II codebook, the maximum amplitude is shown in the following table:

[0090]

[0091]

[0092] In addition, the average coefficient amplitude is constrained by equation (1):

[0093]

[0094] For layers l = 1, ..., υ and polarizations p = 0, 1, where l is the layer, i is the SD basis, L is the number of selected SD bases, f is the FD basis, and the value From the non-zero coefficient (NZC) bitmap and has a value of 0 or a value of 1. However, due to the time domain aspect of Type II Doppler CSI, the CBSR specified by the Rel-16e Type-II codebook cannot be applied to Type II Doppler CSI. That is, the CBSR specified by the Rel-16e Type-II codebook cannot be applied to Type II Doppler CSI because the CBSR specified by the Rel-16e Type-II codebook has no time domain aspect and therefore cannot be used to express power limits on time instances in the time domain.

[0095] Some techniques and apparatus described herein provide techniques and apparatus associated with CBSR for Type II Doppler CSI (i.e., time domain CSI). In some aspects, a network node may send and a UE may receive information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates a broadband power limit for one or more SD bases in the time domain for a layer. In some aspects, a UE may send and a network node may receive Type II Doppler CSI according to the CBSR. By enabling a CBSR that indicates a broadband power limit for one or more SD bases in the time domain, the techniques and apparatus described herein implement a CBSR for Type II Doppler CSI (e.g., by enabling a power limit expressed at a time instance in the time domain), thereby facilitating interference reduction or mitigation in scenarios where the UE needs to provide Type II Doppler CSI (e.g., when the UE moves at a relatively high speed relative to the network node). Additional details are provided below.

[0096] Figure 6 6 is a diagram illustrating an example 600 associated with CBSR for time domain CSI according to aspects of the present disclosure. Figure 6 As shown in , example 600 includes communication between a network node 110 and a UE 120. In some aspects, the network node 110 and the UE 120 may be included in a wireless network, such as the wireless network 100. The network node 110 and the UE 120 may communicate via a wireless access link, which may include an uplink and a downlink.

[0097] like Figure 6 As shown in reference 602 in , the network node 110 may send and the UE 120 may receive information associated with a CBSR for Type II Doppler CSI. In some aspects, the information associated with the CBSR indicates (e.g., for each layer in a corresponding layer and / or multiple layers) a wideband power limit of one or more SD bases in the time domain.

[0098] In some aspects, the information associated with the CBSR indicates that the broadband power limit of one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units (referred to herein as time instances / units) in the time domain of the Type II Doppler CSI. That is, for the corresponding layer, the broadband power limit (i.e., FD average power limit) of one or more SD bases (i.e., codebook subsets) can be defined in the time domain as an average power limit in the time domain (e.g., a time instance / unit for Type II Doppler CSI). In some aspects, the time instance / unit can represent a period of time corresponding to one or more symbols or one or more time slots, as well as other examples.

[0099] In some aspects, the information associated with the CBSR may include configuring or indicating one or more SD bases and one or more maximum values ​​(eg, amplitudes) γ corresponding to each of the one or more SD bases. i For example, in some aspects, the information associated with the CBSR may indicate a bit sequence B=B1B2, where B1 represents one or more SD bases and B2 represents the corresponding maximum value of the one or more SD bases. In some aspects, the information associated with the CBSR may include information indicating that the UE 120 will use a limitation on the average power of multiple times / units in the time domain of the Type II Doppler CSI. Additionally or alternatively, in some aspects, the information associated with the CBSR may include information indicating that the UE 120 will use a limitation on the power of each time instance / unit in the time domain of the Type II Doppler CSI.

[0100] In some such aspects, for two polarizations p (p=0, 1) and one or more SD bases, the average power of each SD base i in the FD and time domains (i.e., the broadband power average in the time domain) is limited to a maximum value (e.g., amplitude) γ according to equation (2). i (For the same SD basis i, the two polarizations are configured with the same maximum value, which means that γ i =γ i+pL ):

[0101]

[0102] Where l is the layer, i is the SD basis, L is the number of selected SD basis, f is the FD basis, M is the number of selected FD basis, t is the time domain basis, S is the number of selected TD basis (not excluding TD basis selected by SD / FD basis), and the value Z l,i+pL,f,t comes from the NZC bitmap and has a value of 0 or a value of 1. Furthermore, in the above equation, is associated with layer l and polarization p Reference differential magnitude of coefficients, p l,i+pL,f,t is an associated SD basis i, polarization p, FD basis f, and TD basis t The magnitude of the difference in coefficients, where represents the coefficient matrix in the eType-II-Doppler pre-decoder as described above. In some aspects, the maximum value γ associated with the first polarization i (i.e., power limit) is equal to the maximum value γ associated with the second polarization of the same SD basis i i+L In some aspects, as shown in equation (2), the average power is limited to a maximum value γ based at least in part on the summation in the time domain i It is worth noting that the maximum value γ determined using equation (1) iis not based at least in part on summation in the time domain.

[0103] Alternatively, in some aspects, the information associated with the CBSR indicates that the wideband power limit of one or more SD bases in the time domain is a limit on the power of each time instance / unit in the time domain of the Type II Doppler CSI. That is, for the corresponding layer, the wideband power limit (i.e., FD average power limit) of one or more SD bases (i.e., codebook subsets) can be defined in the time domain as a power limit for each time instance / unit in the time domain in some aspects.

[0104] In some such aspects, for a particular time instance / cell n, for two polarizations p (p=0, 1) and one or more SD bases, the broadband power (i.e., the average power in the FD) of each SD base i is subject to the maximum value (e.g., amplitude) γ according to Equation 3. i Limitations:

[0105]

[0106] in, is associated with the SD basis i+pL and the FD basis f at time instance / unit n A coefficient of here, is associated with SD basis i (and polarization p), FD basis f, and TD basis t A coefficient of , and the coefficient Can be zero or an NZC value (e.g., for NZC, Amplitude The magnitude can be expressed as In addition, d i,f,t (n) is the TD basis vector d i,f,t The nth element of (the TD basis vector set t=0,…,S-1 can be selected according to the SD basis or the FD basis, that is, depending on i and / or f). Regarding equation (3), Representation coefficient In addition, C norm (i+pL,n) is a normalization factor and can be defined as the non-zero value for all selected FD bases f=0,…,M-1 at time instance / unit n In some aspects, as shown in equation (3), for a corresponding time instance / unit, the power of each time instance / unit in the time domain is limited by a maximum value γ of coefficients associated with the SD basis i and all associated FD basis at the corresponding time instance / unit. i It is worth noting that the maximum value γ determined using equation (1) iNot based at least in part on coefficients associated with the SD basis and all associated FD basis at time instance / unit n.

[0107] In some aspects, if the wideband power limit of one or more SD bases in the time domain is a limit on the power of each time instance / unit in the time domain of Type II Doppler CSI, the power limit may be applied only to the predicted portion of the Type II Doppler CSI. That is, the CBSR may only apply to the predicted parameters (e.g., predicted PMI) and not to the actually observed or measured parameters (e.g., measured observed PMI). Therefore, in some aspects, the UE 120 may generate the Type II Doppler CSI such that the wideband power limit of one or more SD bases in the time domain is applied only to a portion of the Type II Doppler CSI (e.g., only to the predicted time instance / unit of the Type II Doppler CSI).

[0108] In some aspects, the limitation of the power per time instance / unit in the time domain will be applied to all reported time instances / units of Type II Doppler CSI. That is, in connection with generating or transmitting Type II Doppler CSI, UE 120 may be configured in some aspects to apply the limitation of the power per time unit in the time domain to all reported time instances / units of Type II Doppler CSI (e.g., n=0, ..., N4-1).

[0109] In some aspects, the limitation of the power per time instance / unit in the time domain will be applied only to a portion of the time instances / units of the Type II Doppler CSI. That is, in connection with generating or transmitting Type II Doppler CSI, the UE 120 may be configured in some aspects to apply the limitation of the power per time instance / unit in the time domain to a portion of the time instances / units of the Type II Doppler CSI. The portion of the time instances / units to which the limitation of the power per time instance / unit in the time domain will be applied may be, for example, a predicted time instance / unit of the Type II Doppler CSI (e.g., n=N ob ,…,N4-1).

[0110] In some aspects, the time-domain average wideband power limit will be applied to a portion of the time instances / units of the Type II Doppler CSI. That is, in connection with generating or transmitting the Type II Doppler CSI, the UE 120 can be configured in some aspects to apply the time-domain average wideband power limit to a portion of the time instances / units of the Type II Doppler CSI. The portion of the time instance / unit to which the power limit for each time instance / unit in the time domain is to be applied can be, for example, the predicted time instance / unit of the Type II Doppler CSI (e.g., n=N ob ,…,N4-1).

[0111] In some such aspects, the time-domain average broadband power of the portion of the time instance / unit is limited according to equation (4):

[0112]

[0113] Among them, C′ norm (i+pL) is a normalization factor and can be defined as for all selected FD bases f=0,…,M-1 and time instances / units n=N ob ,…,N4-1 is non-zero The number of

[0114] In some aspects, Type II Doppler CSI may be generated without applying a wideband power limit to one or more SD bases in the time domain. For example, as described above, the wideband power limit may be a limit on the power of each time instance / cell in the time domain of the Type II Doppler CSI, and the UE 120 may be configured to apply the limit on the power of each time instance / cell in the time domain only to the predicted time instances / cells of the Type II Doppler CSI. Here, if the UE 120 determines (e.g., based at least in part on an indication from the network node 110) that the Type II Doppler CSI does not include the predicted time instances / cells in the time domain, the UE 120 may generate the Type II Doppler CSI without applying the wideband power limit (because the limit only applies to the predicted time instances / cells, which are not included in the Type II Doppler CSI).

[0115] As another example, as described above, the wideband power limit may be a time-domain average wideband power limit to be applied to the predicted time instances / cells of the Type II Doppler CSI. Here, if the UE 120 determines (e.g., based at least in part on an indication from the network node 110) that the Type II Doppler CSI does not include the predicted time instances / cells in the time domain, the UE 120 may generate the Type II Doppler CSI without applying the wideband power limit (because the limit applies only to the predicted time instances / cells, which are not included in the Type II Doppler CSI).

[0116] As shown at reference 604, the UE 120 may generate a Type II Doppler CSI based at least in part on information associated with the CBSR. For example, the UE 120 may perform one or more measurements (e.g., based at least in part on one or more received CSI-RS) and generate a Type II Doppler CSI based at least in part on the CBSR.

[0117] For example, if the broadband power limit of one or more SD bases in the time domain is a limit on the average power of multiple time instances / units in the time domain of the Type II Doppler CSI, the UE 120 can generate the Type II Doppler CSI according to the limit on the average power of multiple time instances / units in the time domain. For another example, if the broadband power limit of one or more SD bases in the time domain is a limit on the power of each time instance / unit in the time domain of the Type II Doppler CSI, the UE 120 can generate the Type II Doppler CSI according to the limit on the power of each time instance / unit in the time domain (for example, by applying the limit on the power of each time instance / unit in the time domain to all reported time instances / units, or applying the limit on the power of each time instance / unit in the time domain to a portion of the time instance / unit, or applying the limit on the power of each time instance / unit in the time domain to the predicted time instance / unit, etc.). In some aspects, as described above, the broadband power limit of one or more SD bases in the time domain is not applied to the Type II Doppler CSI, and the Type II Doppler CSI does not include the predicted time instance / unit.

[0118] As shown at reference 606, according to the CBSR, the UE 120 may transmit and the network node 110 may receive the Type II Doppler CSI.

[0119] In this manner, CBSR may be enabled for Type II Doppler CSI, thereby facilitating interference reduction or mitigation in scenarios where UE 120 needs to provide Type II Doppler CSI (eg, when UE 120 moves at a relatively high speed relative to network nodes).

[0120] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 Different than described.

[0121] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a UE according to the present disclosure. Example process 700 is an example of a UE (eg, UE 120) performing operations associated with CBSR for time domain CSI.

[0122] like Figure 7 As shown, in some aspects, process 700 may include receiving information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in the time domain for a layer (block 710). For example, a UE (e.g., using Fig. 9The communication manager 140 and / or receiving component 902 depicted in FIG. 1 may receive information associated with a CBSR for a Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in the time domain for a layer, as described above.

[0123] like Figure 7 As further shown, in some aspects, process 700 may include transmitting Type II Doppler CSI according to the CBSR (block 720). Fig. 9 The communication manager 140 and / or the transmitting component 904 depicted in FIG. 1 may transmit Type II Doppler CSI according to the CBSR, as described above.

[0124] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0125] In a first aspect, the information associated with the CBSR indicates that the wideband power limit of one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of Type II Doppler CSI.

[0126] In a second aspect, either alone or in combination with the first aspect, the average power is limited to a maximum value based at least in part on a summation in the time domain.

[0127] In a third aspect, alone or in combination with one or more of the first aspect and the second aspect, the information associated with the CBSR indicates that the broadband power limit of one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

[0128] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, process 700 includes generating Type II Doppler CSI such that wideband power limitations of one or more SD bases in the time domain are applied only to a portion of the Type II Doppler CSI.

[0129] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, for a corresponding time instance or time unit, the limitation of the power at each time instance or time unit in the time domain is limited to a maximum value that is at least partially based on coefficients associated with the SD basis and all associated frequency domain bases at the corresponding time instance or time unit.

[0130] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the limitation of the power per time instance or time unit in the time domain is applied to all reported time instances or time units of Type II Doppler CSI.

[0131] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the limitation of the power per time instance or time unit in the time domain will be applied only to a portion of the time instances or time units of Type II Doppler CSI.

[0132] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, a time-domain average wideband power limit is applied to a portion of a time instance or time unit of a Type II Doppler CSI.

[0133] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, process 700 includes generating Type II Doppler CSI based at least in part on determining that the Type II Doppler CSI does not include a predicted time instance or time unit in the time domain, without applying wideband power limitations on one or more SD bases in the time domain.

[0134] although Figure 7 An example block diagram of process 700 is shown, but in some aspects, process 700 may include Figure 7 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 700. Additionally or alternatively, two or more blocks of the blocks of process 700 may be performed in parallel.

[0135] Figure 8 is a diagram illustrating an example process 800 performed, for example, by a network node in accordance with the present disclosure. The example process 800 is an example of a network node (eg, the network node 110) performing operations associated with CBSR for time domain CSI.

[0136] like Figure 8 As shown, in some aspects, process 800 may include sending information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in the time domain for a layer (block 810). For example, a network node (e.g., using Fig.10 The communication manager 150 and / or the transmitting component 1004 depicted in FIG. 1004 may transmit information associated with a CBSR for a Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in the time domain for a layer, as described above.

[0137] like Figure 8As further shown, in some aspects, process 800 may include receiving Type II Doppler CSI according to the CBSR (block 820). For example, a network node (e.g., using Fig.10 The communication manager 150 and / or receiving component 1002 depicted in FIG. 1004 may receive Type II Doppler CSI based on the CBSR, as described above.

[0138] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0139] In a first aspect, the information associated with the CBSR indicates that the wideband power limit of one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of Type II Doppler CSI.

[0140] In a second aspect, either alone or in combination with the first aspect, the average power is limited to a maximum value based at least in part on a summation in the time domain.

[0141] In a third aspect, alone or in combination with one or more of the first aspect and the second aspect, the information associated with the CBSR indicates that the broadband power limit of one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

[0142] In a fourth aspect, alone or in combination with one or more of the first to third aspects, one or more SD-based wideband power limits are applied only to a portion of the Type II Doppler CSI.

[0143] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, for a corresponding time instance or time unit, the limitation of the power at each time instance or time unit in the time domain is limited to a maximum value that is at least partially based on coefficients associated with the SD basis and all frequency domain bases at the corresponding time instance or time unit.

[0144] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the limitation of the power per time instance or time unit in the time domain is applied to all reported time instances or time units of Type II Doppler CSI.

[0145] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the limitation of the power per time instance or time unit in the time domain will be applied only to a portion of the time instances or time units of Type II Doppler CSI.

[0146] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, a time-domain average wideband power limit is applied to a portion of a time instance or time unit of a Type II Doppler CSI.

[0147] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, wideband power limitation of one or more SD bases in the time domain is not applied to Type II Doppler CSI, and the Type II Doppler CSI does not include a prediction time instance or time unit.

[0148] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 800. Additionally or alternatively, two or more blocks of the blocks of process 800 may be performed in parallel.

[0149] Fig. 9 is a diagram of an example apparatus 900 for wireless communication according to the present disclosure. The apparatus 900 may be a UE, or the UE may include the apparatus 900. In some aspects, the apparatus 900 includes a receiving component 902 and a transmitting component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 900 may communicate with another apparatus 906 (such as a UE, a network node, a base station, or another wireless communication device) using the receiving component 902 and the transmitting component 904. As further shown, the apparatus 900 may include a communication manager 140. The communication manager 140 may include a CSI component 908 and other examples.

[0150] In some aspects, the apparatus 900 may be configured to perform Figure 6 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as Figure 7 In some aspects, the apparatus 900 and / or Fig. 9 One or more of the components shown in the figure may include a combination of Figure 2 Additionally or alternatively, Fig. 9 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0151] The receiving component 902 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 906. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the device 900. In some aspects, the receiving component 902 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a described UE.

[0152] Transmit component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 900 may generate communications and may provide the generated communications to transmit component 904 for transmission to device 906. In some aspects, transmit component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 906. In some aspects, transmit component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 904 can be co-located with the receive component 902 in a transceiver.

[0153] Receiving component 902 can receive information associated with a CBSR for a Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in a time domain for a layer. Transmitting component 904 can transmit the Type II Doppler CSI in accordance with the CBSR.

[0154] The CSI component 908 can generate the Type II Doppler CSI such that the wideband power limitation of one or more SD bases in the time domain is applied only to a portion of the Type II Doppler CSI.

[0155] The CSI component 908 can generate the Type II Doppler CSI without applying wideband power limits for one or more SD bases in the time domain based at least in part on determining that the Type II Doppler CSI does not include a prediction time instance or time unit in the time domain.

[0156] Fig. 9 The number and arrangement of components shown are provided as examples. In practice, there may be Fig. 9Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig. 9 Two or more components shown may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The component set (one or more components) shown may be described as being executable by Fig. 9 Another component shown may be a collection of components that perform one or more functions.

[0157] Fig.10 1 is a diagram of an example apparatus 1000 for wireless communication according to the present disclosure. Apparatus 1000 may be a network node, or a network node may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a sending component 1004, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a network node, a base station, or another wireless communication device) using receiving component 1002 and sending component 1004. As further shown, apparatus 1000 may include a communication manager 150.

[0158] In some aspects, the apparatus 1000 may be configured to perform Figure 6 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 8 The process 800. In some aspects, Fig.10 The apparatus 1000 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 One or more components of the network node. Additionally or alternatively, Fig.10 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0159] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1006. The receiving component 1002 may provide the received communications to one or more other components of the device 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the device 1000. In some aspects, the receiving component 1002 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories or combinations thereof of the network node.

[0160] The transmitting component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1006. In some aspects, one or more other components of the device 1000 may generate communications and may provide the generated communications to the transmitting component 1004 for transmission to the device 1006. In some aspects, the transmitting component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1006. In some aspects, the transmitting component 1004 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the network node. In some aspects, the transmit component 1004 can be co-located with the receive component 1002 in a transceiver.

[0161] Transmitting component 1004 can transmit information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates wideband power limits for one or more SD bases in the time domain for a layer. Receiving component 1002 can receive Type II Doppler CSI according to the CBSR.

[0162] Fig.10 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.10 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.10 Two or more components shown may be implemented in a single component, or Fig.10 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The component set (one or more components) shown may be described as being executable by Fig.10 Another component shown may be a collection of components that perform one or more functions.

[0163] The following provides an overview of some aspects of the disclosure:

[0164] Aspect 1: A method of wireless communication performed by a UE, the method comprising: receiving information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit for one or more SD bases in a time domain for a layer; and sending Type II Doppler CSI according to the CBSR.

[0165] Aspect 2: A method according to Aspect 1, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of the Type II Doppler CSI.

[0166] Aspect 3: The method according to aspect 2, wherein the average power is limited to a maximum value based at least in part on the summation in the time domain.

[0167] Aspect 4: A method according to Aspect 1, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

[0168] Aspect 5: According to the method of Aspect 4, the method also includes: generating the Type II Doppler CSI so that the wideband power limitation of the one or more SD bases in the time domain is only applied to a portion of the Type II Doppler CSI.

[0169] Aspect 6: A method according to any one of Aspect 4, wherein, for a corresponding time instance or time unit, the limiting of the power of each time instance or time unit in the time domain is limited to a maximum value, and the maximum value is at least partially based on coefficients associated with the SD basis and all associated frequency domain bases at the corresponding time instance or time unit.

[0170] Aspect 7: The method according to any one of aspects 4 to 6, wherein the limitation of the power of each time instance or time unit in the time domain will be applied to all reported time instances or time units of the Type II Doppler CSI.

[0171] Aspect 8: The method according to any one of aspects 4 to 6, wherein the limitation of the power of each time instance or time unit in the time domain will only be applied to a portion of the time instances or time units of the Type II Doppler CSI.

[0172] Aspect 9: The method according to any one of aspects 1 to 8, wherein a time-domain average wideband power limit is applied to a portion of a time instance or a time unit of the Type II Doppler CSI.

[0173] Aspect 10: According to the method described in any one of Aspects 1 to 9, the method further includes: generating the Type II Doppler CSI without applying the wideband power limitation of the one or more SD bases in the time domain, at least in part based on determining that the Type II Doppler CSI does not include a predicted time instance or time unit in the time domain.

[0174] Aspect 11: A method of wireless communication performed by a network node, the method comprising: sending information associated with a CBSR for Type II Doppler CSI, wherein the information associated with the CBSR indicates a wideband power limit for one or more SD bases in a time domain for a layer; and receiving Type II Doppler CSI based on the CBSR.

[0175] Aspect 12: A method according to Aspect 11, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of the Type II Doppler CSI.

[0176] Aspect 13: The method according to aspect 12, wherein the average power is limited to a maximum value based at least in part on the summation in the time domain.

[0177] Aspect 14: A method according to Aspect 11, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

[0178] Aspect 15: The method according to aspect 14, wherein the wideband power limitation of the one or more SD bases is applied only to a portion of the Type II Doppler CSI.

[0179] Aspect 16: A method according to any one of Aspects 14 to 15, wherein, for a corresponding time instance or time unit, the limiting of the power of each time instance or time unit in the time domain is limited to a maximum value, and the maximum value is at least partially based on coefficients associated with the SD basis and all frequency domain bases at the corresponding time instance or time unit.

[0180] Aspect 17: The method according to any one of Aspects 14 to 16, wherein the limitation of the power of each time instance or time unit in the time domain will be applied to all reported time instances or time units of the Type II Doppler CSI.

[0181] Aspect 18: The method according to any one of aspects 14 to 16, wherein the limitation of the power per time unit in the time domain will only be applied to a portion of the time instance or time unit of the Type II Doppler CSI.

[0182] Aspect 19: The method according to any one of aspects 11 to 18, wherein a time-domain average wideband power limit is applied to a portion of a time instance or time unit of the Type II Doppler CSI.

[0183] Aspect 20: A method according to any one of Aspects 11 to 19, wherein the wideband power limitation of the one or more SD bases in the time domain is not applied to the Type II Doppler CSI, and the Type II Doppler CSI does not include a prediction time instance or time unit.

[0184] Aspect 21: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 10.

[0185] Aspect 22: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 10.

[0186] Aspect 23: An apparatus for wireless communication, the apparatus comprising at least one component configured to perform the method according to one or more of aspects 1 to 10.

[0187] Aspect 24: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 10.

[0188] Aspect 25: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 10.

[0189] Aspect 26: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 11 to 20.

[0190] Aspect 27: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 11 to 20.

[0191] Aspect 28: An apparatus for wireless communication, the apparatus comprising at least one component configured to perform the method according to one or more of aspects 11 to 20.

[0192] Aspect 29: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 11 to 20.

[0193] Aspect 30: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 11 to 20.

[0194] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be acquired from practice of the various aspects.

[0195] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, there is no reference to a specific software code herein to describe the operation and behavior of the system and / or method, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0196] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0197] Although the specific combination of features is stated in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically stated in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (it includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (for example, 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 sorting of a, b and c).

[0198] Any element, action or instruction used herein should not be interpreted as key or necessary, unless clearly stated. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If you only want to refer to a project, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "the element of having" A can also have B). In addition, the phrase "based on" is intended to represent "at least partially based on", unless otherwise clearly stated. In addition, as used herein, the term "or" is intended to be open when used in a series, and can be used interchangeably with "and / or", unless otherwise clearly stated (for example, if used in combination with "any" or "only one").

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: Memory; and one or more processors coupled to the memory and configured to: receiving information associated with a codebook subset restriction (CBSR) for Type II Doppler channel state information (CSI), wherein the information associated with the CBSR indicates, for a layer, wideband power limits on one or more spatial domain (SD) bases in a time domain; and Type II Doppler CSI is sent according to the CBSR.

2. A UE according to claim 1, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of the Type II Doppler CSI.

3. The UE of claim 2, wherein the average power is limited to a maximum value based at least in part on the summation in the time domain.

4. The UE according to claim 1, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

5. The UE according to claim 4, wherein the one or more processors are further configured to: generate the type II Doppler CSI so that the wideband power limitation of the one or more SD bases in the time domain is only applied to a portion of the type II Doppler CSI.

6. The UE according to claim 4, wherein: The limiting of the power at each time instance or time unit in the time domain is, for a corresponding time instance or time unit, limited to a maximum value based at least in part on coefficients associated with the SD basis and all associated frequency domain bases at the corresponding time instance or time unit.

7. The UE according to claim 4, wherein the limitation of the power per time instance or time unit in the time domain is to be applied to all reported time instances or time units of the Type II Doppler CSI.

8. The UE according to claim 4, wherein the limitation of the power per time instance or time unit in the time domain will be applied only to a portion of the time instances or time units of the Type II Doppler CSI.

9. The UE of claim 1, wherein a time-domain average wideband power limit is to be applied to a portion of a time instance or a time unit of the Type II Doppler CSI.

10. A UE according to claim 1, wherein the one or more processors are further configured to: generate the Type II Doppler CSI without applying the wideband power limit of the one or more SD bases in the time domain based at least in part on determining that the Type II Doppler CSI does not include a predicted time instance or time unit in the time domain.

11. A network node for wireless communication, the network node comprising: Memory; and one or more processors coupled to the memory and configured to: transmitting information associated with a codebook subset restriction (CBSR) for Type II Doppler channel state information (CSI), wherein the information associated with the CBSR indicates, for a layer, wideband power limits on one or more spatial domain (SD) bases in a time domain; and Type II Doppler CSI is received according to the CBSR.

12. The network node of claim 11, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of the Type II Doppler CSI.

13. The network node of claim 12, wherein the average power is limited to a maximum value based at least in part on the summation in the time domain.

14. The network node of claim 11, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

15. The network node of claim 14, wherein the one or more SD-based wideband power limits are applied only to a portion of the Type II Doppler CSI.

16. The network node according to claim 14, wherein: The limiting of the power of each time instance or time unit in the time domain is, for a corresponding time instance or time unit, limited to a maximum value based at least in part on coefficients associated with the SD basis and all frequency domain bases at the corresponding time instance or time unit.

17. The network node according to claim 14, wherein the limitation of the power per time instance or time unit in the time domain is to be applied to all reported time instances or time units of the Type II Doppler CSI.

18. The network node according to claim 14, wherein the limitation of the power per time instance or time unit in the time domain is to be applied only to a portion of the time instances or time units of the Type II Doppler CSI.

19. The network node of claim 11, wherein a time-domain average wideband power limit is to be applied to a portion of a time instance or time unit of the Type II Doppler CSI.

20. The network node of claim 11, wherein the wideband power limit of the one or more SD bases in the time domain is not applied to the Type II Doppler CSI, and the Type II Doppler CSI does not include a prediction time instance or time unit.

21. A method of wireless communication performed by a user equipment (UE), the method comprising: receiving information associated with a codebook subset restriction (CBSR) for Type II Doppler channel state information (CSI), wherein the information associated with the CBSR indicates, for a layer, wideband power limits on one or more spatial domain (SD) bases in a time domain; and Type II Doppler CSI is sent according to the CBSR.

22. The method of claim 21, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of the Type II Doppler CSI.

23. The method of claim 22, wherein the average power is limited to a maximum value based at least in part on the summation in the time domain.

24. The method of claim 21, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

25. The method according to claim 24, further comprising: The Type II Doppler CSI is generated such that the wideband power limitation of the one or more SD bases in the time domain is applied only to a portion of the Type II Doppler CSI.

26. The method according to claim 24, wherein: The limiting of the power at each time instance or time unit in the time domain is, for a corresponding time instance or time unit, limited to a maximum value based at least in part on coefficients associated with the SD basis and all associated frequency domain bases at the corresponding time instance or time unit.

27. The method of claim 24, wherein the limitation of the power per time instance or time unit in the time domain is to be applied to all reported time instances or time units of the Type II Doppler CSI.

28. The method of claim 24, wherein the limitation of the power per time instance or time unit in the time domain will be applied only to a portion of the time instances or time units of the Type II Doppler CSI.

29. The method of claim 21, wherein a time-domain average wideband power limit is applied to a portion of a time instance or time unit of the Type II Doppler CSI.

30. A method of wireless communication performed by a network node, the method comprising: transmitting information associated with a codebook subset restriction (CBSR) for Type II Doppler channel state information (CSI), wherein the information associated with the CBSR indicates, for a layer, wideband power limits on one or more spatial domain (SD) bases in a time domain; and Type II Doppler CSI is received according to the CBSR.

31. A method according to claim 30, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the average power of multiple time instances or time units in the time domain of the Type II Doppler CSI.

32. The method of claim 31, wherein the average power is limited to a maximum value based at least in part on the summation of the time domain.

33. The method of claim 30, wherein the information associated with the CBSR indicates that the wideband power limit of the one or more SD bases in the time domain is a limit on the power of each time instance or time unit in the time domain of the Type II Doppler CSI.

34. The method of claim 33, wherein the one or more SD-based wideband power limits are applied only to a portion of the Type II Doppler CSI.

35. The method of claim 33, wherein: The limiting of the power of each time instance or time unit in the time domain is, for a corresponding time instance or time unit, limited to a maximum value based at least in part on coefficients associated with the SD basis and all frequency domain bases at the corresponding time instance or time unit.

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