Csi report with indication of recommended subcarrier spacing value

Abstract

A user equipment (UE) receives a configuration of a CSI report from a network device (gNB), followed by a CSI-RS reference signal. Thereafter, the UE performs channel measurements, including one or more of Doppler spread, average delay, delay spread, phase noise power, and / or inter-carrier interference level; based on these measurements, the UE determines at least one recommended sub-carrier spacing (SCS) value, and sends back the recommended SCS explicitly or implicitly in the CSI report. The gNB receives the CSI report, checks the target requirements, updates the previous SCS to a new SCS, and transmits a PDCCH to schedule a new PDSCH, where the PDCCH informs the UE of the new SCS.

Description

[0001] Cross-reference of related applications

[0002] This application claims priority to U.S. Patent Application No. 63 / 067,088, filed August 18, 2020, entitled “Apparatus, Methods, and Systems for UE-Initiated Subcarrier Spacing Adaptation,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The subject matter disclosed in this article generally relates to wireless communication, and more specifically to indicating subcarrier spacing values. Background Technology

[0004] In some wireless communication networks, the subcarrier spacing may not be optimal for a given communication. In such networks, the network device may not have all the information needed to select the optimal subcarrier spacing. Summary of the Invention

[0005] A method for indicating subcarrier spacing values ​​is disclosed. Devices and systems also perform the functions of the method. One embodiment of the method at the device includes a configuration for receiving a report from a network device, the report containing an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In some embodiments, the method includes, in response to receiving the configuration, estimating the at least one subcarrier spacing value by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof. In some embodiments, the method includes transmitting a report containing the indication of the at least one subcarrier spacing value.

[0006] An apparatus for indicating a subcarrier spacing value includes means. In some embodiments, the apparatus includes a receiver that receives a configuration report from a network device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In various embodiments, the apparatus includes a processor that, in response to receiving the configuration, estimates the at least one subcarrier spacing value by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof. In some embodiments, the apparatus includes a transmitter that transmits the report including the indication of the at least one subcarrier spacing value.

[0007] Another embodiment of the method for indicating a subcarrier spacing value at a network device includes the configuration of a transmission report to the device, the report containing an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In some embodiments, the method includes receiving a report containing the indication of the at least one subcarrier spacing value. The at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof.

[0008] Another device for indicating a subcarrier spacing value includes a network apparatus. In some embodiments, the device includes a transmitter configured to transmit a report to the apparatus, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In various embodiments, the device includes a receiver that receives a report including the indication of the at least one subcarrier spacing value. The at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof. Attached Figure Description

[0009] A more detailed description of the embodiments briefly described above will be presented with reference to the specific embodiments illustrated in the accompanying drawings. While understanding that these drawings depict only some embodiments and therefore should not be considered limiting, the embodiments will be described and explained in a more specific and detailed manner using the accompanying drawings, in which:

[0010] Figure 1 This is a schematic block diagram illustrating one embodiment of a wireless communication system for indicating subcarrier spacing values;

[0011] Figure 2 This is a schematic block diagram illustrating one embodiment of a device that can be used to indicate subcarrier spacing values;

[0012] Figure 3 This is a schematic block diagram illustrating one embodiment of a device that can be used to indicate subcarrier spacing values;

[0013] Figure 4 This is a schematic block diagram illustrating one embodiment of link adaptation with SCS indication;

[0014] Figure 5 This is a flowchart illustrating an embodiment of a method for indicating subcarrier spacing values; and

[0015] Figure 6 This is a flowchart illustrating another embodiment of a method for indicating subcarrier spacing values. Detailed Implementation

[0016] As those skilled in the art will understand, aspects of the embodiments may be embodied as systems, devices, methods, or program products. Therefore, embodiments may take the form of entirely hardware embodiments, entirely software embodiments (including firmware, resident software, microcode, etc.), or embodiments combining software and hardware aspects, all of which are generally referred to herein as “circuit,” “module,” or “system.” Furthermore, embodiments may take the form of program products embodied in one or more computer-readable storage devices storing machine-readable code, computer-readable code, and / or program code (hereinafter referred to as “code”). The storage device may be tangible, non-transitory, and / or non-transferable. The storage device may not embody signals. In one embodiment, the storage device employs only signals for accessing the code.

[0017] Certain functional units described in this specification may be labeled as modules to more specifically emphasize their implementation independence. For example, a module may be implemented as hardware circuitry that includes custom-designed very large-scale integration (“VLSI”) circuitry or gate arrays, off-the-shelf semiconductors (e.g., logic chips, transistors, or other discrete components). Modules may also be implemented in programmable hardware devices (e.g., field-programmable gate arrays, programmable array logic, programmable logic devices, or the like).

[0018] Modules can also be implemented in code and / or software for execution by various types of processors. For example, an identified module of code may contain one or more physical or logical blocks of executable code, which may be organized, for example, as objects, procedures, or functions. However, executables of identified modules do not need to be physically located together, but may contain disparate instructions stored in different locations that, when logically linked together, encompass the module and implement the module's claimed purpose.

[0019] In fact, a module of code can be a single instruction or multiple instructions, and can even be distributed across several different code segments, different programs, and several memory devices. Similarly, operational data in this document can be identified and described within a module, and can be represented in any suitable form and organized within any suitable type of data structure. Operational data can be collected as a single dataset or distributed across different locations, including across different computer-readable storage devices. Where a module or part of a module is implemented in software, the software portion is stored on one or more computer-readable storage devices.

[0020] Any combination of one or more computer-readable media may be used. The computer-readable media may be a computer-readable storage medium. The computer-readable storage medium may be a storage device for storing code. The storage device may be (e.g., but not limited to) an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor system, device, or apparatus, or any suitable combination thereof.

[0021] More specific examples of storage devices (a non-exhaustive list) will include the following: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (“RAM”), read-only memory (“ROM”), erasable programmable read-only memory (“EPROM” or flash memory), portable optical disc read-only memory (“CD-ROM”), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In the context of this document, computer-readable storage media can be any tangible medium that can contain or store programs for use by or in connection with an instruction execution system, device, or apparatus.

[0022] The code used to implement the operations of the embodiments can be any number of lines and can be written in any combination of one or more programming languages, including object-oriented programming languages ​​(such as Python, Ruby, Java, Smalltalk, C++, etc.), and conventional procedural programming languages ​​(such as the "C" programming language, etc.) and / or machine languages ​​(such as assembly language). The code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer via any type of network (including a local area network ("LAN") or a wide area network ("WAN"), or can be connected to an external computer (e.g., via the Internet provided by an Internet service provider).

[0023] Throughout this specification, the terms "an embodiment," "an embodiment," or similar language refer to a particular feature, structure, or characteristic described in connection with an embodiment that is included in at least one embodiment. Therefore, the phrase "in an embodiment," "in an embodiment," and similar language throughout this specification may (but do not necessarily) refer to the same embodiment, but rather to "one or more, but not all, embodiments," unless explicitly stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless explicitly stated otherwise. An enumerated list of items does not imply that any or all items are mutually exclusive unless explicitly stated otherwise. The terms "a," "an," and "described" also refer to "one or more," unless explicitly stated otherwise.

[0024] Furthermore, the features, structures, or characteristics described in the embodiments can be combined in any suitable manner. In the following description, numerous specific details (e.g., examples of programming, software modules, user selection, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc.) are provided to provide a thorough understanding of the embodiments. However, those skilled in the art will recognize that the embodiments can be practiced without one or more of these specific details or using other methods, components, materials, etc. In other instances, well-known structures, materials, or operations have not been shown or described in detail to avoid obscuring aspects of the embodiments.

[0025] The following description refers to schematic flowcharts and / or schematic block diagrams of methods, apparatus, systems, and program products according to embodiments. It should be understood that each block of the schematic flowcharts and / or schematic block diagrams, and combinations of blocks in the schematic flowcharts and / or schematic block diagrams, can be implemented by code. The code can be provided to a processor of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus to generate machinery, such that instructions executable by the processor of the computer or other programmable data processing apparatus create components for implementing the functions / actions specified in the blocks or portions of the schematic flowcharts and / or schematic block diagrams.

[0026] The code may also be stored in a storage device, which may instruct a computer, other programmable data processing equipment or other devices to operate in a particular manner, such that the instructions stored in the storage device produce an article of writing containing instructions that implement functions / actions specified in the blocks or blocks of the schematic flowchart and / or schematic block diagram.

[0027] The code may also be loaded onto a computer, other programmable data processing apparatus or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer-implemented process, such that the code executing on the computer or other programmable device provides a process for implementing the functions / actions specified in the boxes or blocks of the flowchart and / or block diagram.

[0028] The schematic flowcharts and / or block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of devices, systems, methods, and program products according to various embodiments. In this regard, each block in the schematic flowcharts and / or block diagrams may represent a module, segment, or portion of code containing one or more executable instructions for implementing one or more specified logical functions.

[0029] It should also be noted that in some alternative implementations, the functions mentioned in the boxes may not appear in the order shown in the figures. For example, in fact, depending on the functionality involved, two boxes shown consecutively may be executed substantially simultaneously, or the boxes may sometimes be executed in reverse order. Other steps and methods that are functionally, logically, or effectively equivalent to one or more boxes or portions thereof in the illustrated figures may be considered.

[0030] While various arrow and line types may be used in flowcharts and / or block diagrams, they are not intended to limit the scope of the corresponding embodiments. In fact, some arrows or other connecting symbols may be used only to indicate the logical flow of the depicted embodiment. For example, an arrow may indicate a wait or monitoring period of unspecified duration between enumeration steps in a depicted embodiment. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system or a combination of dedicated hardware and code that performs the specified function or action.

[0031] In each figure, the description of an element may refer to an element in a previous figure. In all figures, the same numbers refer to the same elements, including alternative embodiments containing the same elements.

[0032] Figure 1 An embodiment of a wireless communication system 100 for indicating subcarrier spacing values ​​is depicted. In one embodiment, the wireless communication system 100 includes a remote unit 102 and a network unit 104. Although in Figure 1 A specific number of remote units 102 and network units 104 are depicted, but those skilled in the art will recognize that the wireless communication system 100 may contain any number of remote units 102 and network units 104.

[0033] In one embodiment, remote unit 102 may include a computing device, such as a desktop computer, laptop computer, personal digital assistant (“PDA”), tablet computer, smartphone, smart TV (e.g., a TV connected to the Internet), set-top box, game console, security system (including security cameras), in-vehicle computer, network device (e.g., router, switch, modem), aircraft, drone, or the like. In some embodiments, remote unit 102 includes a wearable device, such as a smartwatch, fitness tracker, optical head-mounted display, or the like. Furthermore, remote unit 102 may be referred to as a subscriber unit, mobile device, mobile station, user, terminal, mobile terminal, fixed terminal, subscriber station, UE, user terminal, device, or other terms used in the art. Remote unit 102 may communicate directly with one or more of network units 104 via UL communication signals. In some embodiments, remote unit 102 may communicate directly with other remote units 102 via sidelink communication.

[0034] Network unit 104 can be distributed across a geographical area. In some embodiments, network element 104 may also be referred to as and / or may include one or more of the following: access point, access terminal, base station, base station, location server, core network (“CN”), radio network entity, node B, evolved node B (“eNB”), 5G node B (“gNB”), home node B, relay node, device, core network, air server, radio access node, access point (“AP”), new radio (“NR”), network entity, access and mobility management function (“AMF”), unified data management (“UDM”), unified data repository (“UDR”), UDM / UDR, policy control function (“PCF”), radio access network (“RAN”), network slice selection function (“NSSF”), operations administration and management (“OAM”), session management function (“SMF”), user plane function (“UPF”), application function, authentication server function (“AUSF”), security anchor functionality (“SEAF”), trusted non-3GPP gateway function (“TNGF”), or other terms used in the art. Network unit 104 is typically part of a radio access network that includes one or more controllers communicatively coupled to one or more corresponding network units 104. The radio access network is typically communicatively coupled to one or more core networks, which may be coupled to other networks, such as the Internet and public switched telephone networks, and other networks. These and other elements of the radio access and core networks are not described, but are generally well known to those skilled in the art.

[0035] In one implementation, the wireless communication system 100 conforms to the NR protocol standardized in the 3rd Generation Partnership Project (“3GPP”), wherein network unit 104 uses an OFDM modulation scheme for transmission on the downlink (“DL”), and remote unit 102 uses a single-carrier frequency division multiple access (“SC-FDMA”) or orthogonal frequency division multiple access (“OFDM”) scheme for transmission on the uplink (“UL”). However, more generally, the wireless communication system 100 may implement other open or proprietary communication protocols, such as WiMAX, IEEE 802.11 variants, GSM, GPRS, UMTS, LTE variants, and CDMA2000. ZigBee, Sigfoxx, and other protocols. This disclosure is not intended to be limited to any particular wireless communication system architecture or protocol implementation.

[0036] Network unit 104 can serve a number of remote units 102 within a service area, such as a cell or a cell sector, via a wireless communication link. Network unit 104 transmits DL communication signals to serve the remote units 102 in the time domain, frequency domain, and / or spatial domain.

[0037] In various embodiments, remote unit 102 may receive a configuration report from a network device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In some embodiments, remote unit 102 may, in response to receiving the configuration, estimate at least one subcarrier spacing value by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof. In some embodiments, remote unit 102 may transmit a report including an indication of at least one subcarrier spacing value. Therefore, remote unit 102 can be used to indicate a subcarrier spacing value.

[0038] In some embodiments, network unit 104 may transmit a report configuration to the device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In some embodiments, network unit 104 may receive a report including an indication of at least one subcarrier spacing value. The at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof. Therefore, network unit 104 can be used to indicate the subcarrier spacing value.

[0039] Figure 2 An embodiment of a device 200 for indicating subcarrier spacing values ​​is depicted. Device 200 includes one embodiment of a remote unit 102. Furthermore, the remote unit 102 may include a processor 202, a memory 204, an input device 206, a display 208, a transmitter 210, and a receiver 212. In some embodiments, the input device 206 and the display 208 are combined into a single device, such as a touchscreen. In some embodiments, the remote unit 102 may not include any input device 206 and / or display 208. In various embodiments, the remote unit 102 may include one or more of the processor 202, memory 204, transmitter 210, and receiver 212, and may not include an input device 206 and / or display 208.

[0040] In one embodiment, processor 202 may include any known controller capable of executing computer-readable instructions and / or performing logical operations. For example, processor 202 may be a microcontroller, microprocessor, central processing unit (“CPU”), graphics processing unit (“GPU”), auxiliary processing unit, field-programmable gate array (“FPGA”), or similar programmable controller. In some embodiments, processor 202 executes instructions stored in memory 204 to perform the methods and routines described herein. Processor 202 may be communicatively coupled to memory 204, input device 206, display 208, transmitter 210, and receiver 212.

[0041] In one embodiment, memory 204 is a computer-readable storage medium. In some embodiments, memory 204 includes volatile computer storage media. For example, memory 204 may include RAM, including dynamic RAM (“DRAM”), synchronous dynamic RAM (“SDRAM”), and / or static RAM (“SRAM”). In some embodiments, memory 204 includes non-volatile computer storage media. For example, memory 204 may include a hard disk drive, flash memory, or any other suitable non-volatile computer storage device. In some embodiments, memory 204 includes both volatile and non-volatile computer storage media. In some embodiments, memory 204 also stores program code and related data, such as an operating system or other controller algorithms operating on remote unit 102.

[0042] In one embodiment, input device 206 may include any known computer input device, including a touch panel, buttons, keyboard, stylus, microphone, or the like. In some embodiments, input device 206 may be integrated with display 208, for example, as a touchscreen or similar touch-sensitive display. In some embodiments, input device 206 includes a touchscreen, enabling text input using a virtual keyboard displayed on the touchscreen and / or by handwriting on the touchscreen. In some embodiments, input device 206 includes two or more different devices, such as a keyboard and a touch panel.

[0043] In one embodiment, display 208 may include any known electronically controllable display or display device. Display 208 may be designed to output visual, auditory, and / or tactile signals. In some embodiments, display 208 includes an electronic display capable of outputting visual data to a user. For example, display 208 may include, but is not limited to, a liquid crystal display (“LCD”), a light-emitting diode (“LED”) display, an organic light-emitting diode (“OLED”) display, a projector, or a similar display device capable of outputting images, text, or the like to a user. As another non-limiting example, display 208 may include a wearable display, such as a smartwatch, smart glasses, a heads-up display, or the like. Furthermore, display 208 may be a component of a smartphone, personal digital assistant, television, desktop computer, laptop computer, personal computer, vehicle dashboard, or the like.

[0044] In some embodiments, display 208 includes one or more speakers for generating sound. For example, display 208 may generate audible alarms or notifications (e.g., beeps or chimes). In some embodiments, display 208 includes one or more haptic devices for generating vibration, motion, or other haptic feedback. In some embodiments, all or part of display 208 may be integrated with input device 206. For example, input device 206 and display 208 may form a touchscreen or similar touch-sensitive display. In other embodiments, display 208 may be positioned near input device 206.

[0045] In some embodiments, receiver 212 receives a configuration report from a network device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In various embodiments, processor 202, in response to receiving the configuration, estimates at least one subcarrier spacing value by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof. In some embodiments, transmitter 210 transmits a report including an indication of at least one subcarrier spacing value.

[0046] Although only one transmitter 210 and one receiver 212 are described, the remote unit 102 may have any suitable number of transmitters 210 and receivers 212. The transmitters 210 and receivers 212 may be of any suitable type. In one embodiment, the transmitters 210 and receivers 212 may be part of a transceiver.

[0047] Figure 3An embodiment of a device 300 for indicating subcarrier spacing values ​​is depicted. Device 300 includes one embodiment of a network unit 104. Furthermore, network unit 104 may include a processor 302, a memory 304, an input device 306, a display 308, a transmitter 310, and a receiver 312. As will be understood, processor 302, memory 304, input device 306, display 308, transmitter 310, and receiver 312 may be substantially similar to processor 202, memory 204, input device 206, display 208, transmitter 210, and receiver 212 of remote unit 102, respectively.

[0048] In some embodiments, transmitter 310 transmits a report configured to the apparatus, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In various embodiments, receiver 312 receives the report including an indication of at least one subcarrier spacing value. The at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof.

[0049] In some embodiments, user equipment (“UE”)-initiated adaptive subcarrier spacing can be enhanced for link adaptation used for data and / or control transmissions. In some embodiments, higher subcarrier spacing (“SCS”) values ​​exceeding 120 kHz can be used in frequency ranges exceeding 52.6 GHz (“FR”) to compensate for phase noise. However, selecting an SCS value based on frequency range is not the only criterion. As will be understood, the selection of channel conditions and modulation and coding scheme (“MCS”) can play a significant role in determining the SCS value. For example, if channel conditions are not very good (e.g., low signal-to-noise ratio (“SNR”) range), a lower SCS value of 120 kHz or 240 kHz may be better because the noise is more noticeable than inter-carrier interference caused by phase noise. If channel conditions are moderate (e.g., medium SNR range), then a slightly higher SCS value (e.g., 480 kHz) may be better. For very good channel conditions (e.g., high SNR), a 960 kHz SCS value may be optimal (e.g., phase noise is dominant, and therefore, if the cyclic prefix (“CP”) is sufficient, reducing phase noise interference by increasing subcarrier spacing has better performance), all assuming similar movement speeds. In various embodiments, performance requirements in terms of target block error rate (“BLER”) and / or throughput may be critical in determining the appropriate value for SCS, as well as other parameters such as MCS, rank, etc.

[0050] In some embodiments, the UE estimates channel conditions such as phase noise, inter-cell interference (“ICI”), Doppler effect, and channel quality indication (“CQI”), and some of these estimates are based on supported receiver algorithms, thus giving the UE a clearer understanding of the channel conditions compared to the gNB. As can be understood, reporting a large set of measurements to the gNB can incur significant overhead. In various embodiments, the SCS value selection may be based on the channel conditions estimated by the UE, such as phase noise, ICI, CQI, Doppler, etc., and corresponding indications may be introduced to report new SCS values ​​in the physical layer (“PHY”).

[0051] It should be noted that the terms numerology and SCS are used interchangeably in this article.

[0052] In some embodiments, a feedback mechanism from an RX node to a TX node can be used to indicate at least one SCS value (e.g., explicitly or implicitly) based on channel measurements at the RX node and required performance metrics, use cases, and / or service requirements. Channel measurements may be based on one or more RSs received by the RX node. One example is... Figure 4The description includes the following: 1) Initial physical downlink shared channel (“PDSCH”) transmission is performed using SCS1 and MCS1, and a channel state information (“CSI”) reference signal (“RS”) (“CSI-RS”) is transmitted for CSI acquisition; 2) The UE performs channel measurements, which include one or more of the following: reference signal received power (“RSRP”), reference signal received quality (“RSRQ”), signal-to-interference-plus-noise ratio (“SINR”), Doppler shift, Doppler spread, average delay, delay spread, measured phase noise power and / or ICI level, and based on one or more of these measurements, the UE calculates a CSI-RS resource indicator (“CRI”) (e.g., beam index), CQI, precoding matrix indicator (“PMI”) and / or rank indicator (“RI”), which may be supported for the target transport block BLER and the recommended SCS, and the recommended SCS may be included in the CSI report. In some embodiments, the UE may recommend a new RS structure, such as a phase tracking reference signal (“PTRS”) and / or a demodulation reference signal (“DMRS”), which may or may not include (e.g., a bandwidth portion (“BWP”) based SCS) recommended SCS. In one instance, the reported CQI, PMI, and / or RI are conditional on the CRI (e.g., if present) and the recommended SCS; 3) the UE sends the recommended new SCS and / or the new corresponding RS structure back to the gNB in ​​the CSI report and / or uplink (“UL”) control signaling, and the UE may indicate the maximum allowed time for the recommended SCS to be valid in the report, wherein the maximum allowed time is derived based on the channel coherence time; 4) the gNB considers the CSI report and / or UL control signaling, checks the target requirements, and updates the MCS to MCS2 and the SCS to SCS2 and / or the corresponding RS structure (such as PTR and / or DMRS) for subsequent data and / or control transmissions; and 5) the gNB explicitly and / or implicitly indicates the new SCS.

[0053] Figure 4 This is a schematic block diagram 400 illustrating one embodiment of link adaptation with SCS indication. As illustrated, a first physical downlink shared channel (“PDSCH”) transmission is scheduled using a first SCS (SCS1) and a first MCS (MCS1), then a CSI report is transmitted using a physical uplink control channel (“PUCCH”) transmission and includes information for updating the SCS, and then, based on the CSI report, a second PDSCH transmission is scheduled using a second SCS (SCS2) and a second MCS (MCS2).

[0054] As may be understood, in some embodiments, UE-initiated SCS adaptation based on channel conditions measured at the UE may be enabled, which may be beneficial, and the UE may be able to transmit subsequent data and / or control with a more suitable SCS value than otherwise possible.

[0055] In a first embodiment, the SCS is explicitly indicated in the CSI report. In this first embodiment, the CSI report can be enhanced to allow the UE to indicate at least one digital value μ to the network device (e.g., gNB) based on channel measurements and target performance requirements (e.g., target transport block (“TB”) BLER). The indicated digital value μ may have wideband granularity. Furthermore, in the first embodiment, the UE may be configured with a CSI-ReportConfig, where the higher-layer parameter reportQuantity is set to “cri-RI-PMI-CQI-SCSi”, “cri-RI-il-SCSi”, “cri-RI-CQI-SCSi”, “cri-RI-LI-PMI-CQI-SCSi”, or simply “SCSi”. If the UE is configured with any of the indicated reportQuantities, then it is expected that the UE will indicate at least one digital value μ to the network device in the CSI report. If the UE is configured with reportQuantity='SCSi', then the processing timeline for CSI is expected to be shorter compared to at least all other reports where SCS is configured to be indicated. It should be noted that SCSi is an instance marker of the SCS indication in the CSI report, and any other marker can be used.

[0056] In one embodiment of the first embodiment, the number of bits required to report SCSi is proportional to the number of SCS values ​​enabled (e.g., permitted) for one or more data and / or control channel transmissions. The enabled SCS values ​​may be configured based on UE capabilities or by a higher layer (e.g., Radio Resource Control (“RRC”) or Media Access Control (“MAC”) element (“CE”) (“MAC-CE”)), or may depend on the FR. For example, in FR 1 (“FR1”), support for 15kHz and 30kHz may be enforced. Therefore, only one bit may be indicated, where '0' indicates the lower SCS value of 15kHz and '1' indicates the higher SCS value of 30kHz. If more than two values ​​are enabled, then a greater number of bits can be configured.

[0057] In another embodiment of the first embodiment, the number of bits required to report SCSi is proportional to the number of possible SCS values ​​based on the BWPs configured for the UE. For example, if the UE is configured with four downlink (“DL”) BWPs, and each BWP is associated with a different SCS value, then up to two bits may be needed to indicate SCSi in the CSI report. In another instance, if the UE is configured with four DL BWPs, but only two SCS values ​​are associated with them, such as BWP1 having 15kHz, BWP2 having 30kHz, BWP3 having 15kHz, and BWP4 having 15kHz, then only one bit is needed, where '0' will indicate the lowest value among the SCS values ​​(e.g., 15kHz) and '1' will indicate the highest value among the SCS values ​​(e.g., 30kHz).

[0058] In another embodiment of the first embodiment, more than one SCS value (e.g., as a series or multiple specific values) may be indicated in the CSI report for different BLER, throughput, and / or latency requirements. In one instance, two values ​​are indicated, where a first value is expected to apply to a first transmission on the PDSCH, and a second indicated value is expected to apply to retransmissions and / or repetitions of the initial transmission on the PDSCH. In another instance, two or more SCS values ​​are indicated for the first transmission to enable the gNB to select the appropriate SCS for achieving a specific Quality of Service (“QoS”) objective and / or to meet other UE scheduling requirements.

[0059] In one embodiment of the first embodiment, the UE indicates multiple SCS values ​​(or digital values) via an index having corresponding values ​​in bits, as shown in Table 1. In another embodiment of the first embodiment, the UE indicates the optimal SCS and also indicates the step size of the next possible SCS value. For example, the UE may indicate 0100 for SCS 240kHz, with additional bits 0 and 1 to indicate that the next possible SCS is one step down (e.g., 120kHz) and the last possible SCS is one step up (e.g., 480kHz) (e.g., a one-bit difference up and / or down indication relative to the indicated optimal (first complete) SCS), or additional bits 0 and 0 to indicate that the next possible SCS is one step down (e.g., 120kHz) and the last possible SCS is two steps down (e.g., 60kHz), etc. (e.g., a one-bit difference up and / or down indication relative to the previous or most recent SCS).

[0060] Table 1: Multiple values ​​of SCS

[0061] index SCS value 0 120kHz, 240kHz 1 240kHz, 480kHz 2 480kHz, 960kHz 3 960kHz

[0062] In another embodiment of the first embodiment, the UE is semi-statically configured using an SCSi table, where each index points to one or more values ​​of the SCS. If the UE is configured to report the SCSi in a CSI report, then the UE indicates one of the indexes in the configured table.

[0063] In another embodiment of the first embodiment, the SCS indication is bound to the CQI indication, wherein each value or set of values ​​in the CQI table is associated with an SCSi value (or digital value), and a previously existing CQI table may be modified to include an SCSi field, as shown in Table 2. If the UE is configured to report both CQI and SCSi, then a newly modified table for CQI may be used. If the UE is configured to report only CQI, then a table containing only MCS values ​​may be used. If only SCSi is configured to be reported, then, according to other embodiments, a specific SCSi field may be used. In one instance, for a given SCSi value, only a subgroup of CQI values ​​(e.g., from the MCS table) may be reported.

[0064] Table 2: SCSi and CQI

[0065]

[0066] In some embodiments of the first embodiment, the CSI report setting or CSI report configuration includes a first CSI resource configuration for channel measurement (e.g., non-zero power (“NZP”) CSI-RS) and a first CSI resource configuration interference measurement (“IM”) based on a first SCS (e.g., the SCS of the currently active BWP) (e.g., CSI IM (“CSI-IM”) and / or NZP CSI-RS IM report (“IMR”)). The UE determines a preferred or recommended SCSi (e.g., which may differ from the first SCS) based on the first CSI resource configuration associated with the first SCS (e.g., receiving a CSI-RS associated with at least one of the first CSI resource configurations). In one instance, the reported CQI, PMI, and / or RI are conditional on the CRI (e.g., if present) and the recommended SCSi. The CSI report may include at least one of CQI, PMI, RI, and / or CRI, and the recommended SCSi is transmitted on the UL channel in the BWP associated with the first SCS. CSI processing time can be based on multiple assumptions with different values ​​of the first SCS and SCSi.

[0067] In some embodiments of the first embodiment, the CSI reporting settings or CSI reporting configuration include a first CSI resource configuration (e.g., NZP CSI-RS) for channel measurements and a first CSI resource configuration interference measurement (e.g., CSI-IM and / or NZP CSI-RS IMR) based on a first SCS (e.g., the SCS of the currently active BWP), and a second CSI resource configuration (e.g., NZP CSI-RS) for channel measurements and a second CSI resource configuration interference measurement (e.g., CSI-IM and / or NZP CSI-RS IMR) based on a second SCS (e.g., the second SCS is different from the first SCS). In one instance, the second CSI resource configuration may be configured in the same BWP as the first SCS, or it may be configured in a different BWP than the BWP associated with the first SCS. The CSI-RS may be an aperiodic CSI-RS triggered by the PDCCH (e.g., in the BWP associated with the first SCS). The UE can determine the recommended SCSi in the first SCS and the second SCS based on the received CSI-RS associated with the first CSI resource configuration and the second CSI resource configuration. In one instance, the reported CQI, PMI, and / or RI are conditional on the CRI (e.g., if present) and the recommended SCSi, and are based on the CSI resource configuration corresponding to the recommended SCSi. In another instance, for a beam or quasi-co-location (“QCL”) type D (“QCL type D”) nature reference RS, the UE assumes that the second CSI resource configuration is the same as the beam or QCL type D nature reference RS of the corresponding first CSI resource configuration. The CSI report may include at least one of CQI, PMI, RI, and / or CRI, and the recommended SCSi is transmitted on the UL channel in the BWP associated with the first SCS. The CSI processing time may be based on the first SCS and the second SCS. For aperiodic CSI-RS, the CSI-RS associated with the second CSI-RS resource configuration is received only after the PDCCH triggers the end of the aperiodic CSI report. In one instance, where the first SCS < the second SCS, the minimum trigger delay is quantized to the start of the next slot in the numerator of the second SCS.

[0068] In various implementations of the first embodiment, the UE may use, for example, uplink assistance information or UL control signaling of MAC CE to report the recommended SCS.

[0069] In some embodiments of the first embodiment, the UE may indicate in the report the maximum allowed time period for symbols and / or time slots until the recommended SCS is valid, wherein the maximum allowed time is derived based on the channel coherence time, which can be calculated using a receiver algorithm such as Doppler spread.

[0070] In the second embodiment, an implicit indication of SCS may exist in the CSI report. In the second embodiment, the CSI report is enhanced to indicate at least one configured BWP index (e.g., each associated with an SCS value) based on channel measurements and target performance requirements (e.g., indicated by the UE to a network device (e.g., gNB)). According to the second embodiment, the UE may be configured with CSI-ReportConfig, where the higher-layer parameter reportQuantity is set to “cri-RI-PMI-CQI-BWPi”, “cri-RI-il-BWPi”, “cri-RI-CQI-BWPi”, “cri-RI-LI-PMI-CQI-BWPi”, or simply “BWPi”. If the UE is configured with reportQuantity, it is expected that the UE will indicate at least one of the configured BWP index values ​​μ in the CSI report provided to the network device. If the UE is configured with reportQuantity = 'BWPi', the CSI processing timeline is expected to be shorter compared to the number of other reports where SCS is configured to be indicated. It should be noted that BWPi is the instance marker for BWP indication in the CSI report (any other marker may be used).

[0071] In one embodiment of the second embodiment, the number of bits required to report BWPi is proportional to the number of BWPs configured for the DL channel and / or signal.

[0072] In another embodiment of the second embodiment, more than one BWP index value may be indicated in the CSI report (e.g., as a series or multiple specific values).

[0073] In some implementations of the second embodiment, the BWP index value is bound to a CQI indicator. Each value or group of values ​​in the CQI table is associated with a BWP index value. The CQI table can be modified to include a BWP index field, as shown in Table 3. If the UE is configured to report both CQI and BWPi, then the modified table containing the BWP index field can be used. If the UE is configured to report only CQI, then the CQI table (e.g., containing only MCS values) can be used. If only BWPi is configured to be reported, then a specific SCSi field can be used. In one instance, for a given BWPi value, only a subgroup of CQI values ​​(e.g., from the MCS table) can be reported.

[0074] In some embodiments of the second embodiment, the CSI report setting or CSI report configuration includes a first CSI resource configuration (e.g., NZP CSI-RS) for channel measurement and a first CSI resource configuration interference measurement (e.g., CSI-IM and / or NZP CSI-RS IMR) on a first BWP (e.g., the currently active BWP) associated with the first SCS. The UE determines a preferred or recommended BWPi (e.g., which may be different from the first BWP and have a second SCS different from the first SCS) based on the first CSI resource configuration on the first BWP (e.g., receiving the CSI-RS associated with the first CSI resource configuration). In one instance, the reported CQI, PMI, and / or RI are conditional on the CRI (e.g., if present) and the recommended BWPi (e.g., and the associated SCS). The CSI report includes at least one of CQI, PMI, RI, and / or CRI, and the recommended BWPi is transmitted on the UL channel in the first BWP. The CSI processing time may be based on multiple assumptions about different values ​​of the first SCS and BWPi of the first BWP.

[0075] In various embodiments of the second embodiment, the CSI report setting or CSI report configuration includes a first CSI resource configuration (e.g., NZP CSI-RS) for channel measurements and a first CSI resource configuration interference measurement (e.g., CSI-IM and / or NZP CSI-RS IMR) on a first BWP (e.g., the currently active BWP) having a first SCS, and a second CSI resource configuration (e.g., NZP CSI-RS) for channel measurements and a second CSI resource configuration interference measurement (e.g., CSI-IM and / or NZP CSI-RS IMR) on a second BWP having a second SCS (e.g., the second SCS is different from the first SCS). The CSI-RS may be a non-periodic CSI-RS triggered by the PDCCH (e.g., in a BWP associated with the first SCS). The UE determines the recommended BWPi in the first and second BWPs based on the received CSI-RS associated with the first and second CSI resource configurations. In one instance, the reported CQI, PMI, and / or RI can be conditional on the CRI (e.g., if present) and the SCS associated with the recommended BWPi, and based on the CSI resource configuration corresponding to the recommended BWPi. In another instance, for a beam or QCL type D nature reference RS, the UE assumes that the second CSI resource configuration is the same as the beam or QCL type D nature reference RS of the corresponding first CSI resource configuration. The CSI report includes at least one of CQI, PMI, RI, and / or CRI, and the recommended BWPi is transmitted on the UL channel in the first BWP. The CSI processing time can be based on the first SCS of the first BWP and the second SCS of the second BWP. For aperiodic CSI-RS, the CSI-RS associated with the second CSI-RS resource configuration on the second BWP is received only after the PDCCH triggers the end of the aperiodic CSI report on the first BWP. In one instance, if the first SCS < the second SCS, then the minimum trigger delay is quantized to the start of the next slot in the numerator of the second SCS associated with the second BWP.

[0076] Table 3: BWPi and CQI

[0077]

[0078] In a third embodiment, an indication of the SCS (Self-Controlled Switching Component) may exist, transmitted from a network device (e.g., a gNB) to the UE for receiving DL (Deep Streaming) transmissions. In this third embodiment, the gNB indicates the SCS value for transmission to the UE explicitly or implicitly, instructing the UE to switch to a different SCS value. In one implementation of the third embodiment, multiple SCS values ​​may be associated with a single BWP (Browser Window) index, and the gNB indicates both the BWP index value and the SCS index value in the DCI (Digital Channel Interface). If the indicated BWP index is the same as a previous transmission, and only the new SCS index value is indicated, then depending on the UE's capabilities, the expected SCS handover delay is less than the BWP handover delay. In other words, different handover delay values ​​(e.g., depending on capabilities) can be configured via transmissions from the gNB to the UE. In one instance, if the UE is configured with a single BWP index for DL ​​but has multiple SCS indices, then the existing bit fields used for the BWP indication can be interpreted differently to indicate SCS values ​​within the same BWP.

[0079] In another embodiment of the third embodiment, if the UE reports back multiple SCS and / or BWP values ​​in the CSI report, then the gNB may signal an indication of the index of multiple values ​​for receiving DL transmissions and further retransmissions and / or repetitions.

[0080] In another embodiment of the third embodiment, if the gNB has configured the UE with a new, enhanced, and / or modified CQI and MCS table with additional fields indicating SCS and / or BWP values, then the MCS field in the DCI can signal an index to the table indicating both the MCS value and the SCS value to be used for receiving DL transmissions.

[0081] In the fourth embodiment, the SCS can be indicated in the CSI report within the SL. In the fourth embodiment, the CSI report of the SL can be enhanced to indicate an additional field with the SCS value to be used for receiving SL transmissions. For reporting from the receiver (“RX”) UE to the transmitting (“TX”) UE, and according to the fourth embodiment, the RX UE can report a recommended SCS value to be used. In one instance, a MAC CE is defined for reporting the recommended SCS. In another instance, one or two bits are defined as part of the existing CSI report MAC CE structure for CQI and RI to indicate the recommended SCS depending on the frequency range. In yet another instance, in any of the embodiments described herein, the recommended SCS is implicitly indicated along with the CQI value.

[0082] For MAC CE, the gNB can configure and / or pre-configure fixed priority values ​​and delay limits for transmitting MAC CE. Multiple bits can be configured and / or pre-configured by the gNB, or fixed values ​​based on FRs specified in the specification can exist. UE-to-UE (“PC5”) RRC signaling can be used to exchange one or more parameters such as priority values, delay limits, periodicity, sidelink BWP handover delay, supported SCSs, and / or configured sidelink BWPs.

[0083] For Mode 2 - Autonomous Resource Selection, the TX UE may indicate a sidelink BWP handover in the second sidelink control information (“SCI”). The second SCI format may be defined and may indicate a new BWP identifier (“ID”), and may be implemented for sidelinks similar to those in the third embodiment.

[0084] The TX UE can perform new resource selection and / or reselection triggering based on reports received from the RX UE. The resource selection and / or reselection triggering may contain one or more parameters, including a new SCS and a corresponding resource pool ID, for performing candidate resource selection and exclusion.

[0085] In some embodiments, for reporting Mode 1 (e.g., gNB-controlled sidelinks) from the TX UE to the gNB, the TX UE may consider the supported SCS or configured sidelink BWP from the RX UE and report the recommended SCS and / or CP type to the gNB. In one embodiment, the CSI report for the sidelink can be used in the PUCCH or PUSCH. In another embodiment, a new MAC CE can be used for reporting and can be performed on the UE-to-network (“Uu”) interface. In such embodiments, the gNB may indicate a sidelink BWP handover for the sidelink in the DCI (e.g., DCI format 3_0 or a new DCI format). A new sidelink BWP ID may be specified, and the offset in the DCI format 3_0 field may include the sidelink BWP handover delay.

[0086] For shared spectrum between Uu and SL (Mode 1), if shared spectrum exists between Uu and the sidelink, the UE can independently report the recommended SCS for both Uu and SL to the gNB. In one implementation, if the recommended SCS differs for Uu and SL, the gNB can compare the data priority of the corresponding UL or SL service with its corresponding scheduling request (“SR”) and / or buffer status report (“BSR”), and can select an SCS from the recommended SCSs from UL and SL. The selected SCS can be applied to both Uu and SL, so that the UE does not need to have handover delay between Uu and SL. In another implementation, the gNB can compare the data priority of the corresponding UL or SL service and can perform BWP and / or SCS handover. In yet another implementation, the UE can report a combined report considering the recommended SCSs for both Uu and SL.

[0087] For shared spectrum between Uu and SL (Mode 2 - Autonomous Resource Selection), if shared spectrum exists between Uu and the sidelink, the UE can estimate the recommended SCS for the Uu link based on channel measurements and receive the recommended SCS for the sidelink from the RX UE. In one implementation, if the SCS differs for Uu and SL, the TX UE can prioritize the UL or SL based on the priority of services from their respective UL or SL TB. If the UL is prioritized compared to the SL, the TX UE can signal the recommended SCS to the gNB. In another implementation, if the SL is prioritized compared to the UL, the TX UE can perform an autonomous BWP handover to the recommended SCS received from the RX UE.

[0088] In the fifth embodiment, the cyclic prefix length can be indicated and / or updated based on the SCS adaptation. According to the fifth embodiment, the CSI report can be enhanced to indicate whether a normal cyclic prefix or an extended cyclic prefix is ​​used with the SCS and / or BWP adaptation. For very high SCS, or depending on channel measurements, a further extended CP with much higher overhead can be considered.

[0089] In one embodiment of the fifth embodiment, additional bits in the CSI report may be used to indicate which CP type is available for further transmission. In another embodiment of the fifth embodiment, the CP type may be indicated as a portion of the SCSi, BWPi, and / or CQI tables having additional columns indicating the CP type.

[0090] In some embodiments of the fifth embodiment, instead of explicitly indicating the CP type, the CP type may be implicitly assumed to be indicated by the UE for a specific indicated SCS value. In such embodiments, the UE may be configured with a table mapping different SCS values ​​to CP types, and based on said table, the CP type is adapted when the SCS is adapted.

[0091] In various embodiments of the fifth embodiment, the UE may indicate in the report the maximum allowed time period for symbols and / or time slots until the recommended CP type is valid, wherein the maximum allowed time is derived based on the channel coherence bandwidth, which can be calculated using, for example, a receiver algorithm with delay spread.

[0092] Figure 5 This is a flowchart illustrating one embodiment of a method 500 for indicating subcarrier spacing values. In some embodiments, method 500 is performed by a device such as remote unit 102. In some embodiments, method 500 may be performed by a processor executing program code, such as a microcontroller, microprocessor, CPU, GPU, auxiliary processing unit, FPGA, or the like.

[0093] In various embodiments, method 500 includes receiving a report 502 from a network device, the report containing an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In some embodiments, method 500 includes estimating at least one subcarrier spacing value 504 by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof in response to receiving the configuration. In some embodiments, method 500 includes transmitting a report 506 containing an indication of at least one subcarrier spacing value.

[0094] In some embodiments, method 500 further includes transmitting information indicating the capability to support a set of subcarrier spacing values ​​corresponding to a frequency band, wherein at least one subcarrier spacing value indicated in the report is a portion of the set of subcarrier spacing values. In some embodiments, the magnitude of the indication in the report is determined based on the number of subcarrier spacing values ​​in the set of subcarrier spacing values ​​indicating capability information. In various embodiments, the magnitude of the indication in the report is determined based on the number of bandwidth portions configured for the device and the subcarrier spacing values ​​associated with the bandwidth portions used for transmission, reception, or a combination thereof.

[0095] In one embodiment, a bandwidth portion is associated with a subcarrier spacing value, and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth portion. In some embodiments, method 500 further includes receiving a subcarrier spacing table containing at least two columns including an index value and at least one corresponding subcarrier spacing value. In some embodiments, the report includes at least one index value from the subcarrier spacing table.

[0096] In various embodiments, the subcarrier spacing values ​​in the table are subgroups of all supported subcarrier spacing values. In one embodiment, the subgroups are based on the carrier frequency used for transmission. In some embodiments, the subgroups are based on a portion of the bandwidth for a corresponding transmission configuration.

[0097] In some embodiments, method 500 further includes a received channel quality indicator table, the channel quality indicator table including multiple columns indicating subcarrier spacing, digitization, bandwidth portion index value, modulation order, code rate, spectral efficiency, or combinations thereof. In various embodiments, the report includes a cyclic prefix type for the subcarrier spacing value, a cyclic prefix length for the subcarrier spacing value, a bandwidth portion for the subcarrier spacing value, a cyclic prefix type for the bandwidth portion, a cyclic prefix length for the bandwidth portion, or a combination thereof. In one embodiment, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement of the first channel state information resource configuration on a first bandwidth portion associated with the first subcarrier spacing.

[0098] In some embodiments, method 500 further includes determining a bandwidth portion index based on a first channel state information resource configuration associated with a first subcarrier spacing. In some embodiments, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement based on the first channel state information resource configuration of the first subcarrier spacing, and a second channel state information resource configuration for channel measurement and interference measurement based on a second channel state information resource configuration of a second subcarrier spacing different from the first subcarrier spacing. In various embodiments, the report includes information indicating at least one subcarrier spacing value, at least one bandwidth portion, or a combination thereof, for receiving subsequent sidelink transmissions.

[0099] Figure 6 This is a flowchart illustrating another embodiment of a method 600 for indicating subcarrier spacing values. In some embodiments, method 600 is performed by a device such as network unit 104. In some embodiments, method 600 may be performed by a processor executing program code, such as a microcontroller, microprocessor, CPU, GPU, auxiliary processing unit, FPGA, or the like.

[0100] In various embodiments, method 600 includes transmitting a report 602 to the device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof. In some embodiments, method 600 includes receiving a report 604 including an indication of at least one subcarrier spacing value. The at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof.

[0101] In some embodiments, method 600 further includes receiving information indicating a capability to support a set of subcarrier spacing values ​​corresponding to a frequency band, wherein at least one subcarrier spacing value indicated in the report is a portion of the set of subcarrier spacing values. In some embodiments, the magnitude of the indication in the report is determined based on the number of subcarrier spacing values ​​in the set of subcarrier spacing values ​​indicating capability information. In various embodiments, the magnitude of the indication in the report is determined based on the number of bandwidth portions configured for the device and the subcarrier spacing values ​​associated with the bandwidth portions used for transmission, reception, or a combination thereof.

[0102] In one embodiment, a bandwidth portion is associated with a subcarrier spacing value, and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth portion. In some embodiments, method 600 further includes transmitting a subcarrier spacing table containing at least two columns including an index value and at least one corresponding subcarrier spacing value. In some embodiments, the report includes at least one index value from the subcarrier spacing table.

[0103] In various embodiments, the subcarrier spacing values ​​in the table are subgroups of all supported subcarrier spacing values. In one embodiment, the subgroups are based on the carrier frequency used for transmission. In some embodiments, the subgroups are based on a portion of the bandwidth for a corresponding transmission configuration.

[0104] In some embodiments, method 600 further includes a transmission channel quality indicator table, the channel quality indicator table including multiple columns indicating subcarrier spacing, digitization, bandwidth portion index value, modulation order, code rate, spectral efficiency, or combinations thereof. In various embodiments, the report includes a cyclic prefix type for the subcarrier spacing value, a cyclic prefix length for the subcarrier spacing value, a bandwidth portion for the subcarrier spacing value, a cyclic prefix type for the bandwidth portion, a cyclic prefix length for the bandwidth portion, or a combination thereof.

[0105] In one embodiment, the configuration includes a first channel state information resource configuration for channel measurement and first channel state information resource configuration interference measurement on a first bandwidth portion associated with a first subcarrier spacing. In some embodiments, the configuration includes a first channel state information resource configuration for channel measurement and first channel state information resource configuration interference measurement based on a first subcarrier spacing, and a second channel state information resource configuration for channel measurement and second channel state information resource configuration interference measurement based on a second subcarrier spacing different from the first subcarrier spacing. In some embodiments, the report includes information indicating at least one subcarrier spacing value, at least one bandwidth portion, or a combination thereof, for transmission of subsequent sidelink transmissions.

[0106] In one embodiment, the method at the device includes: receiving a configuration of a report from a network device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof; in response to receiving the configuration, estimating the at least one subcarrier spacing value by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof; and transmitting the report including the indication of the at least one subcarrier spacing value.

[0107] In some embodiments, the method further includes transmitting information indicating the ability to support a set of subcarrier spacing values ​​corresponding to a frequency band, wherein at least one subcarrier spacing value indicated in the report is a portion of the set of subcarrier spacing values.

[0108] In some embodiments, the magnitude of the indication in the report is determined based on the number of subcarrier spacing values ​​in the set of subcarrier spacing values ​​that indicate capability information.

[0109] In various embodiments, the magnitude of the indication in the report is determined based on the number of bandwidth portions configured for the device and the subcarrier spacing values ​​associated with the bandwidth portions used for transmission, reception, or a combination thereof.

[0110] In one embodiment, a bandwidth portion is associated with a subcarrier spacing value, and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth portion.

[0111] In some embodiments, the method further includes receiving a subcarrier spacing table, the subcarrier spacing table having at least two columns including an index value and at least one corresponding subcarrier spacing value.

[0112] In some embodiments, the report includes at least one index value from the subcarrier spacing table.

[0113] In various embodiments, the subcarrier spacing values ​​in the table are subgroups of all supported subcarrier spacing values.

[0114] In one embodiment, the subgroup is based on the carrier frequency used for transmission.

[0115] In some embodiments, the subgroup is based on a portion of the bandwidth for the corresponding transmission configuration.

[0116] In some embodiments, the method further includes a channel quality indicator table, the channel quality indicator table including multiple columns indicating subcarrier spacing, digitization, bandwidth portion index value, modulation order, code rate, spectral efficiency, or some combination thereof.

[0117] In various embodiments, the report includes a cyclic prefix type for the subcarrier spacing value, a cyclic prefix length for the subcarrier spacing value, a bandwidth portion for the subcarrier spacing value, a cyclic prefix type for the bandwidth portion, a cyclic prefix length for the bandwidth portion, or a combination thereof.

[0118] In one embodiment, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement of the first channel state information resource configuration on a first bandwidth portion associated with the first subcarrier spacing.

[0119] In some embodiments, the method further includes determining a bandwidth portion index based on a first channel state information resource configuration associated with a first subcarrier spacing.

[0120] In some embodiments, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement based on the first channel state information resource configuration of the first subcarrier spacing, and a second channel state information resource configuration for channel measurement and interference measurement based on a second channel state information resource configuration of the second subcarrier spacing, which is different from the first subcarrier spacing.

[0121] In various embodiments, the report includes information indicating at least one subcarrier spacing value, at least one bandwidth portion, or a combination thereof, for receiving subsequent sidelink transmissions.

[0122] In one embodiment, an apparatus includes means. The apparatus further includes: a receiver that receives a configuration of a report from a network device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof; a processor that, in response to receiving the configuration, estimates the at least one subcarrier spacing value by calculating Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof; and a transmitter that transmits the report including the indication of the at least one subcarrier spacing value.

[0123] In some embodiments, the transmitter transmits information indicating the ability to support a set of subcarrier spacing values ​​corresponding to a frequency band, and at least one subcarrier spacing value indicated in the report is a portion of the set of subcarrier spacing values.

[0124] In some embodiments, the magnitude of the indication in the report is determined based on the number of subcarrier spacing values ​​in the set of subcarrier spacing values ​​that indicate capability information.

[0125] In various embodiments, the magnitude of the indication in the report is determined based on the number of bandwidth portions configured for the device and the subcarrier spacing values ​​associated with the bandwidth portions used for transmission, reception, or a combination thereof.

[0126] In one embodiment, a bandwidth portion is associated with a subcarrier spacing value, and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth portion.

[0127] In some embodiments, the receiver receives a subcarrier spacing table containing at least two columns, including an index value and at least one corresponding subcarrier spacing value.

[0128] In some embodiments, the report includes at least one index value from the subcarrier spacing table.

[0129] In various embodiments, the subcarrier spacing values ​​in the table are subgroups of all supported subcarrier spacing values.

[0130] In one embodiment, the subgroup is based on the carrier frequency used for transmission.

[0131] In some embodiments, the subgroup is based on a portion of the bandwidth for the corresponding transmission configuration.

[0132] In some embodiments, the receiver receives a channel quality indicator table, which includes multiple columns indicating subcarrier spacing, digitization, bandwidth portion index value, modulation order, code rate, spectral efficiency, or combinations thereof.

[0133] In various embodiments, the report includes a cyclic prefix type for the subcarrier spacing value, a cyclic prefix length for the subcarrier spacing value, a bandwidth portion for the subcarrier spacing value, a cyclic prefix type for the bandwidth portion, a cyclic prefix length for the bandwidth portion, or a combination thereof.

[0134] In one embodiment, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement of the first channel state information resource configuration on a first bandwidth portion associated with the first subcarrier spacing.

[0135] In some embodiments, the processor determines the bandwidth portion index based on a first channel state information resource configuration associated with the first subcarrier spacing.

[0136] In some embodiments, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement based on the first channel state information resource configuration of the first subcarrier spacing, and a second channel state information resource configuration for channel measurement and interference measurement based on a second channel state information resource configuration of the second subcarrier spacing, which is different from the first subcarrier spacing.

[0137] In various embodiments, the report includes information indicating at least one subcarrier spacing value, at least one bandwidth portion, or a combination thereof, for receiving subsequent sidelink transmissions.

[0138] In one embodiment, the method at a network device includes: transmitting a configuration report to the device, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof; and receiving the report including the indication of the at least one subcarrier spacing value, wherein the at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof.

[0139] In some embodiments, the method further includes receiving information indicating the capability to support a set of subcarrier spacing values ​​corresponding to a frequency band, wherein at least one subcarrier spacing value indicated in the report is a portion of the set of subcarrier spacing values.

[0140] In some embodiments, the magnitude of the indication in the report is determined based on the number of subcarrier spacing values ​​in the set of subcarrier spacing values ​​that indicate capability information.

[0141] In various embodiments, the magnitude of the indication in the report is determined based on the number of bandwidth portions configured for the device and the subcarrier spacing values ​​associated with the bandwidth portions used for transmission, reception, or a combination thereof.

[0142] In one embodiment, a bandwidth portion is associated with a subcarrier spacing value, and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth portion.

[0143] In some embodiments, the method further includes transmitting a subcarrier spacing table, the subcarrier spacing table having at least two columns including an index value and at least one corresponding subcarrier spacing value.

[0144] In some embodiments, the report includes at least one index value from the subcarrier spacing table.

[0145] In various embodiments, the subcarrier spacing values ​​in the table are subgroups of all supported subcarrier spacing values.

[0146] In one embodiment, the subgroup is based on the carrier frequency used for transmission.

[0147] In some embodiments, the subgroup is based on a portion of the bandwidth for the corresponding transmission configuration.

[0148] In some embodiments, the method further includes a transmission channel quality indicator table, the channel quality indicator table including multiple columns indicating subcarrier spacing, digitization, bandwidth portion index value, modulation order, code rate, spectral efficiency, or some combination thereof.

[0149] In various embodiments, the report includes a cyclic prefix type for the subcarrier spacing value, a cyclic prefix length for the subcarrier spacing value, a bandwidth portion for the subcarrier spacing value, a cyclic prefix type for the bandwidth portion, a cyclic prefix length for the bandwidth portion, or a combination thereof.

[0150] In one embodiment, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement of the first channel state information resource configuration on a first bandwidth portion associated with the first subcarrier spacing.

[0151] In some embodiments, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement based on the first channel state information resource configuration of the first subcarrier spacing, as well as a second channel state information resource configuration for channel measurement and interference measurement based on a second channel state information resource configuration of the second subcarrier spacing, which is different from the first subcarrier spacing.

[0152] In some embodiments, the report includes information indicating at least one subcarrier spacing value, at least one bandwidth portion, or a combination thereof, for use in transmitting subsequent sidelink transmissions.

[0153] In one embodiment, an apparatus includes a network device. The apparatus further includes: a transmitter that transmits a configuration report to the apparatus, the report including an indication of at least one subcarrier spacing value for transmitting a physical channel, receiving a physical channel, or a combination thereof; and a receiver that receives the report including the indication of the at least one subcarrier spacing value, wherein the at least one subcarrier spacing value is estimated based on Doppler spread, average delay, delay spread, phase noise power, inter-carrier interference level, or a combination thereof.

[0154] In some embodiments, the receiver receives information indicating the capability to support a set of subcarrier spacing values ​​corresponding to a frequency band, wherein at least one subcarrier spacing value indicated in the report is a portion of the set of subcarrier spacing values.

[0155] In some embodiments, the magnitude of the indication in the report is determined based on the number of subcarrier spacing values ​​in the set of subcarrier spacing values ​​that indicate capability information.

[0156] In various embodiments, the magnitude of the indication in the report is determined based on the number of bandwidth portions configured for the device and the subcarrier spacing values ​​associated with the bandwidth portions used for transmission, reception, or a combination thereof.

[0157] In one embodiment, a bandwidth portion is associated with a subcarrier spacing value, and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth portion.

[0158] In some embodiments, the transmitter transmits a subcarrier spacing table, which contains at least two columns including an index value and at least one corresponding subcarrier spacing value.

[0159] In some embodiments, the report includes at least one index value from the subcarrier spacing table.

[0160] In various embodiments, the subcarrier spacing values ​​in the table are subgroups of all supported subcarrier spacing values.

[0161] In one embodiment, the subgroup is based on the carrier frequency used for transmission.

[0162] In some embodiments, the subgroup is based on a portion of the bandwidth for the corresponding transmission configuration.

[0163] In some embodiments, the transmitter transmits a channel quality indicator table, which includes multiple columns indicating subcarrier spacing, digitization, bandwidth portion index value, modulation order, code rate, spectral efficiency, or combinations thereof.

[0164] In various embodiments, the report includes a cyclic prefix type for the subcarrier spacing value, a cyclic prefix length for the subcarrier spacing value, a bandwidth portion for the subcarrier spacing value, a cyclic prefix type for the bandwidth portion, a cyclic prefix length for the bandwidth portion, or a combination thereof.

[0165] In one embodiment, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement of the first channel state information resource configuration on a first bandwidth portion associated with the first subcarrier spacing.

[0166] In some embodiments, the configuration includes a first channel state information resource configuration for channel measurement and interference measurement based on the first channel state information resource configuration of the first subcarrier spacing, as well as a second channel state information resource configuration for channel measurement and interference measurement based on a second channel state information resource configuration of the second subcarrier spacing, which is different from the first subcarrier spacing.

[0167] In some embodiments, the report includes information indicating at least one subcarrier spacing value, at least one bandwidth portion, or a combination thereof, for use in transmitting subsequent sidelink transmissions.

[0168] Other specific embodiments may be practiced. The described embodiments should be considered illustrative and non-limiting in all respects. Therefore, the scope of the invention is indicated by the appended claims rather than the foregoing description. All modifications within the meaning and equivalent scope of the claims should be included within its scope.

Claims

1. A method at a device, the method comprising: receiving a configuration of a report from a network device, the report comprising an indication of at least one subcarrier spacing value for transmission of a physical channel, reception of the physical channel, or a combination thereof; in response to receiving the configuration, estimating the at least one subcarrier spacing value by calculating a Doppler spread, a mean delay, a delay spread, a phase noise power, an interference level between carriers, or some combination thereof; and transmitting the report comprising the indication of the at least one subcarrier spacing value, wherein a bandwidth part is associated with a subcarrier spacing value and the device implicitly reports the subcarrier spacing value by reporting an index of the bandwidth part.

2. The method of claim 1, further comprising transmitting information indicating a capability to support a set of subcarrier spacing values corresponding to a frequency band, wherein the at least one subcarrier spacing value indicated in the report is part of the set of subcarrier spacing values.

3. The method of claim 2, wherein a first number of bits required for the indication in the report is determined based on a number of subcarrier spacing values in the set of subcarrier spacing values indicated as capability information.

4. The method of claim 1, wherein a second number of bits required for the indication in the report is determined based on a number of bandwidth parts configured for the device and a subcarrier spacing value associated with the bandwidth part for transmission, reception, or a combination thereof.

5. The method of claim 1, further comprising receiving a subcarrier spacing table containing at least two columns comprising an index value and at least one corresponding subcarrier spacing value.

6. The method of claim 5, wherein the report comprises at least one index value from the subcarrier spacing table.

7. The method of claim 5, wherein a subset is based on a carrier frequency for transmission.

8. The method of claim 1, further comprising receiving a channel quality indicator table comprising a plurality of columns indicating a subcarrier spacing, numerology, a bandwidth part index value, a modulation order, a code rate, a spectral efficiency, or some combination thereof.

9. The method of claim 1, wherein the configuration comprises a first channel state information resource configuration for channel measurement and a first channel state information resource configuration interference measurement on a first bandwidth part associated with a first subcarrier spacing.

10. The method of claim 9, further comprising determining a bandwidth part index based on the first channel state information resource configuration associated with the first subcarrier spacing.

11. The method of claim 1, wherein the configuration comprises a first channel state information resource configuration for channel measurement and a first channel state information resource configuration interference measurement based on a first subcarrier spacing, and a second channel state information resource configuration for channel measurement and a second channel state information resource configuration interference measurement based on a second subcarrier spacing different from the first subcarrier spacing.

12. The method of claim 11, wherein the report comprises information indicating at least one subcarrier spacing value, at least one bandwidth part, or a combination thereof, for receiving a subsequent sidelink transmission.

13. An apparatus, the apparatus comprising: a processor; and a memory coupled to the processor, the processor configured to cause the apparatus to: receive, from a network device, a configuration of a report comprising an indication of at least one subcarrier spacing value for transmission of a physical channel, reception of the physical channel, or a combination thereof; in response to receiving the configuration, estimate the at least one subcarrier spacing value by calculating a Doppler spread, a mean delay, a delay spread, a phase noise power, an interference level between carriers, or a combination thereof; and transmit the report comprising the indication of the at least one subcarrier spacing value, wherein one bandwidth part is associated with one subcarrier spacing value and the apparatus implicitly reports the subcarrier spacing value by reporting an index of a bandwidth part.

14. An apparatus, the apparatus comprising: a processor; and a memory coupled to the processor, the processor configured to cause the apparatus to: transmit, to a device, a configuration of a report comprising an indication of at least one subcarrier spacing value for transmission of a physical channel, reception of the physical channel, or a combination thereof; and receive the report comprising the indication of the at least one subcarrier spacing value, wherein the at least one subcarrier spacing value is estimated based on a Doppler spread, a mean delay, a delay spread, a phase noise power, an interference level between carriers, or a combination thereof, wherein one bandwidth part is associated with one subcarrier spacing value and the apparatus implicitly reports the subcarrier spacing value by reporting an index of a bandwidth part.

15. The apparatus of claim 14, wherein the processor is configured to cause the apparatus to receive information indicating a capability to support a set of subcarrier spacing values corresponding to a frequency band, and the at least one subcarrier spacing value indicated in the report is part of the set of subcarrier spacing values.

16. The apparatus of claim 15, wherein a first number of bits required for the indication in the report is determined based on a number of subcarrier spacing values in the set of subcarrier spacing values indicated as capability information.

17. The apparatus of claim 14, wherein a first number of bits required for the indication in the report is determined based on a number of bandwidth parts configured for the device and a subcarrier spacing value associated with the bandwidth part for transmission, reception, or a combination thereof.

18. The apparatus of claim 14, wherein the processor is configured to cause the apparatus to transmit a subcarrier spacing table containing at least two columns comprising an index value and at least one corresponding subcarrier spacing value. ​ ​

Images