Modulation and coding scheme capabilities for high frequency band wireless communication

Abstract

Aspects presented herein can enable a UE to limit a MCS and / or a K1 offset for communicating with a base station to a threshold based at least in part on a SCS for the communication. In some aspects, based on a subcarrier spacing selected for the communication with the base station, the UE limits at least one of the MCS or the K1 offset: to be less than or equal to a MCS threshold, or to be greater than or equal to a K1 offset threshold, the K1 offset being a number of slots between receiving DL data and transmitting ACK / NACK feedback. The UE communicates with the base station based at least on one of the MCS being less than or equal to the MCS threshold or the K1 offset being greater than or equal to the K1 offset threshold.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit and priority of U.S. Provisional Application Serial No. 63 / 137,656, filed January 14, 2021, entitled "MODULATION AND CODING SCHEME CAPABILITY FOR HIGH BAND WIRELESS COMMUNICATION", and U.S. Patent Application No. 17 / 646,985, filed January 4, 2022, entitled "MODULATION AND CODING SCHEME CAPABILITY FOR HIGH BAND WIRELESS COMMUNICATION", the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] This disclosure generally relates to communication systems, and more specifically, to wireless communication including modulation and decoding schemes (MCS). Background Technology

[0004] Wireless communication systems are widely deployed to provide various telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources. Examples of such multiple access technologies include Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), and Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, national, regional, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the Continuous Mobile Broadband Evolution (CMB) program mandated by the 3rd Generation Partnership Project (3GPP) to meet new requirements related to latency, reliability, security, and scalability (e.g., the Internet of Things (IoT), among others). 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. 5G NR technology requires further improvement. These improvements should also apply to other multiple access technologies and telecommunications standards that employ these technologies. Summary of the Invention

[0006] The following is a simplified overview of one or more aspects to provide a basic understanding of such aspects of the invention. This overview is not a comprehensive summary of all anticipated aspects and is neither intended to identify key or essential elements of all aspects nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that follows.

[0007] In one aspect of this disclosure, a method, computer-readable medium, and apparatus are provided. Based on a subcarrier spacing selected for communication with a base station, the apparatus limits at least one of MCS or K1 offset: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, where K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback. The apparatus communicates with the base station based on at least one of the following conditions: the MCS is less than or equal to the MCS threshold or the K1 offset is greater than or equal to the K1 offset threshold.

[0008] In one aspect of this disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus receives from a user equipment (UE) a capability message indicating the maximum MCS or minimum K1 offset that the UE can support, the maximum MCS or minimum K1 offset being based on subcarrier spacing. The apparatus communicates with the UE at least based on one of two conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset.

[0009] In one aspect of this disclosure, a method, computer-readable medium, and apparatus for wireless communication at a UE are provided. The apparatus determines a subcarrier spacing for communication with a base station. Based on the determined subcarrier spacing, the apparatus determines to limit at least one of an MCS or a K1 offset: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, wherein the K1 offset is the number of time slots between receiving downlink (DL) data and sending ACK / NACK feedback. The apparatus communicates with the base station based on at least one of the following conditions: the MCS is less than or equal to the determined MCS threshold or the K1 offset is greater than or equal to the K1 offset threshold.

[0010] In one aspect of this disclosure, a method, computer-readable medium, and apparatus for wireless communication at a base station are provided. The apparatus receives from a UE a capability message indicating a maximum MCS or minimum K1 offset that the UE can support, the maximum MCS or minimum K1 offset being based on subcarrier spacing. The apparatus communicates with the UE based on at least one of the following two conditions: the MCS is less than or equal to the maximum MCS, or the K1 offset is greater than or equal to the minimum K1 offset.

[0011] To achieve the foregoing and related results, one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and figures illustrate certain illustrative features of one or more aspects in detail. However, these features only indicate a few of the various ways in which the principles of each aspect can be employed, and this description is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0012] Figure 1 This is a diagram illustrating examples of wireless communication systems and access networks based on the aspects presented herein.

[0013] Figure 2A This is a diagram illustrating an example of the first frame according to various aspects of this disclosure.

[0014] Figure 2B This is a diagram illustrating an example of an intra-frame DL channel according to various aspects of this disclosure.

[0015] Figure 2C This is a diagram illustrating an example of a second frame according to various aspects of this disclosure.

[0016] Figure 2D This is a diagram illustrating an example of an intra-frame UL channel according to various aspects of this disclosure.

[0017] Figure 3 This is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0018] Figure 4 This is a communication flow example illustrating an MCS that restricts communication between a UE and a base station based on an SCS according to various aspects of this disclosure.

[0019] Figure 5 This is a communication flow that illustrates an example of the HARQ feedback process.

[0020] Figure 6 This is an example of a communication flow that illustrates a K1 offset for limiting communication between a UE and a base station based on an SCS or an MCS associated with an SCS, according to various aspects of this disclosure.

[0021] Figure 7 This is a flowchart of various wireless communication methods presented in this article.

[0022] Figure 8 This is a diagram illustrating an example of the hardware implementation of the example device according to the aspects presented herein.

[0023] Figure 9 This is a flowchart of various wireless communication methods presented in this article.

[0024] Figure 10 This is a diagram illustrating an example of the hardware implementation of the example device according to the aspects presented herein.

[0025] Figure 11 This is a flowchart of various wireless communication methods presented in this article.

[0026] Figure 12 This is a diagram illustrating an example of the hardware implementation of the example device according to the aspects presented herein. Detailed Implementation

[0027] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein can be practiced. For a thorough understanding of the various concepts, the detailed description includes specific details. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0028] Several aspects of a telecommunications system will now be presented with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system.

[0029] As an example, an element, any part of an element, or any combination of elements can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, logic gates, discrete hardware circuits, and other suitable hardware configured to implement the various functions described in this disclosure. One or more processors in a processing system can run software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other forms, software should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, and so on.

[0030] Therefore, in one or more example embodiments, the described functions can be implemented in hardware, software, or any combination thereof. If implemented in software, the function can be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available medium that is accessible to a computer. By way of example and not limitation, such computer-readable storage media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disc storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the foregoing types, or any other medium that can be used to store computer-executable code in the form of computer-accessible instructions or data structures.

[0031] While aspects and multiple implementations are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations and / or uses may be via integrated chip implementations and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchasing devices, medical devices, artificial intelligence (AI) enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide range of applicability to the described innovations is possible. The scope of implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals must involve multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, one or more processors, interleavers, adders / summers, etc.). The intention is to enable the innovations described herein to be implemented in devices, chip-level components, systems, distributed arrangements, aggregated or non-aggregated components, end-user equipment, etc., of various sizes, shapes, and constructions.

[0032] Figure 1This diagram illustrates an example of a wireless communication system and access network 100. The wireless communication system (also known as a wireless wide area network (WWAN)) includes base station 102, UE 104, evolved packet core network (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0033] In some aspects, UE 104 may include an MCS / K1 threshold determination component 198 configured to limit the MCS and / or K1 offset used for communicating with the base station to a threshold, at least in part based on the SCS used for communication. In one configuration, the MCS / K1 threshold determination component 198 may be configured to determine a subcarrier spacing used for communicating with the base station. In such a configuration, based on the determined subcarrier spacing, the MCS / K1 threshold determination component 198 may determine to limit at least one of the MCS or K1 offset: limiting the MCS to less than or equal to the MCS threshold or limiting the K1 offset to greater than or equal to the K1 offset threshold, where the K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback. In such a configuration, the MCS / K1 threshold determination component 198 may communicate with the base station based on at least one of the following conditions: the MCS is less than or equal to the determined MCS threshold or the K1 offset is greater than or equal to the K1 offset threshold.

[0034] In some aspects, base station 102 / 180 may include an MCS / K1 threshold processing component 199 configured to communicate with a UE (e.g., UE 104) based on an MCS and / or K1 offset indicated by the UE. In one configuration, the MCS / K1 threshold processing component 199 may be configured to receive from the UE a capability message indicating a maximum MCS or minimum K1 offset that the UE can support, based on subcarrier spacing. In such a configuration, the MCS / K1 threshold processing component 199 may communicate with the UE based on at least one of the following two conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset.

[0035] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: user data transmission, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, RAN information management (RIM), paging, location, and delivery of warning messages. Base station 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) via third backhaul link 134 (e.g., X2 interface). First backhaul link 132, second backhaul link 184 and third backhaul link 134 can be wired or wireless.

[0036] Base station 102 can wirelessly communicate with UE 104. Each base station 102 can provide communication coverage for its respective geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, small cell 102' may have coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolution Node B (eNB) (HeNB) that can provide service to a restricted group referred to as a Closed Subscriber Group (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also known as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may carry one or more carriers. Base station 102 / UE 104 can allocate up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.) of spectrum bandwidth for each carrier in carrier aggregation up to a total of Yx MHz (x component carriers) for transmission in each direction. Carriers can be adjacent to each other or not. Carrier allocation can be asymmetrical relative to DL and UL (e.g., more or fewer carriers can be allocated to DL compared to UL). Component carriers can include primary component carriers and one or more secondary component carriers. The primary component carrier can be referred to as the primary cell (PCell), while the secondary component carrier can be referred to as the secondary cell (SCell).

[0037] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be performed through various wireless D2D communication systems, such as WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0038] The wireless communication system may also include a Wi-Fi access point (AP) 150, which communicates with a Wi-Fi station (STA) 152 via a communication link 154, for example, in an unlicensed 5 GHz spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0039] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as the Wi-Fi AP 150. Using NR in unlicensed spectrum can increase coverage and / or capacity of the access network.

[0040] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410MHz 7.125GHz) and FR2 (24.25GHz 52.6GHz). Although a portion of FR1 is greater than 6GHz, FR1 is generally (alternatively) referred to as the "sub-6GHz" band in various documents and articles. Similar naming issues sometimes arise with FR2; although different from the Extremely High Frequency (EHF) band (30GHz-300GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is generally (alternatively) referred to as the "millimeter wave" band in documents and articles.

[0041] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR studies have designated the operating frequency bands of these mid-band frequencies as the frequency range designation FR3 (7.125GHz 24.25GHz). Frequency bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the characteristics of FR1 and / or FR2 to mid-band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation above 52.6GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR2-2 (52.6GHz 71GHz), FR4 (71GHz-114.25GHz), and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0042] In light of the foregoing, unless otherwise expressly stated, it should be understood that the terms "below 6 GHz" and the like (if used herein) can broadly refer to frequencies that may be less than 6 GHz, frequencies that may be within FR1, or frequencies that may include mid-band frequencies. Furthermore, unless otherwise expressly stated, it should be understood that the terms "millimeter wave" and the like (if used herein) can broadly refer to frequencies that may include mid-band frequencies, frequencies that may be within FR2, FR4, or FR2-2 and / or FR5, or frequencies that may be within the EHF band.

[0043] Base station 102, whether a small cell 102' or a large cell (e.g., a macro base station), may include and / or be referred to as an eNB, g-node B (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in the conventional sub-6 GHz spectrum at millimeter-wave frequencies and / or communicate with UE 104 at near-millimeter-wave frequencies. When gNB 180 operates at millimeter-wave or near-millimeter-wave frequencies, it may be referred to as a millimeter-wave base station. Millimeter-wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and short range. Base station 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0044] Base station 180 can transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 can receive beamformed signals from base station 180 in one or more receive directions 182'. UE 104 can also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 can receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 can perform beam training to determine the optimal receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions of base station 180 can be the same or different. The transmit and receive directions of UE 104 can be the same or different.

[0045] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Typically, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 provides functionality for MBMS user service configuration and delivery. It can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can distribute MBMS traffic to base station 102 within a Multicast-Broadcast Single Frequency Network (MBSFN) area belonging to a broadcast-specific service, and is responsible for session management (start / stop) and collecting billing information related to eMBMS.

[0046] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 can communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS streaming and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP services 197. IP services 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), Packet Switching (PS) Streaming (PSS) service, and / or other IP services.

[0047] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), Transmitter Receiver Point (TRP), or other suitable terms. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablets, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UE 104 may be referred to as IoT devices (e.g., parking meters, air pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as station, mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or certain other suitable terms. In some scenarios, the term UE may also be applied to one or more accompanying devices, such as in a device constellation arrangement. One or more of these devices may jointly access the network and / or individually access the network.

[0048] Figure 2A Figure 200 shows an example of the first subframe within a 5G NR frame structure. Figure 2B Figure 230 shows an example of a DL channel within a 5G NR subframe. Figure 2C Figure 250 shows an example of a second subframe within a 5G NR frame structure. Figure 2D Figure 280 illustrates an example of a UL channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD), where subframes within a specific set of subcarriers (carrier system bandwidth) are dedicated to either DL or UL; or the 5G NR frame structure can be Time Division Duplex (TDD), where subframes within a specific set of subcarriers (carrier system bandwidth) are dedicated to both DL and UL. Figure 2A and Figure 2CIn the provided example, it is assumed that the 5G NR frame structure is TDD, where subframe 4 is configured with slot format 28 (primarily DL), where D is DL, U is UL, and F is used flexibly between DL / UL, and subframe 3 is configured with slot format 1 (all UL). Although subframes 3 and 4 are shown with slot formats 1 and 28 respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all DL and all UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The slot format is configured for the UE via the received Slot Format Indicator (SFI) (dynamically via DL Control Information (DCI) or semi-statically / statically via Radio Resource Control (RRC) signaling). Note that the following description also applies to the TDD 5G NR frame structure.

[0049] Figure 2A-2D The frame structure is illustrated, and aspects of this disclosure are applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10 milliseconds) can be divided into 10 equal-sized subframes (1 milliseconds). Each subframe may include one or more time slots. Subframes may also include smaller time slots, which may include 7, 4, or 2 symbols. Depending on whether the cyclic prefix (CP) is normal or extended, each time slot may include 14 or 12 symbols. For normal CP, each time slot may include 14 symbols, and for extended CP, each time slot may include 12 symbols. Symbols on the DL may be CP Orthogonal Frequency Division Multiplexing (OFDM) (CP-OFDM) symbols. Symbols on the UL may be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Extended OFDM (DFT-s-OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the CP and the digital parameters (numerology). The digital parameters define the subcarrier spacing (SCS) and effectively define the time slot length / duration, which is equal to 1 / SCS.

[0050]

[0051] For a standard CP (14 symbols / slot), different digital parameters μ (0 to 4) allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For an extended CP, the digital parameter 2 allows 4 slots per subframe. Therefore, for a standard CP and digital parameter μ, there are 14 symbols per slot and 2 slots per subframe. μ One time slot. The subcarrier spacing can be equal to 2. μ*15kHz, where μ is a digital parameter from 0 to 4. Similarly, digital parameter μ = 0 has a subcarrier spacing of 15kHz, and digital parameter μ = 4 has a subcarrier spacing of 240kHz. Symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A to 2D An example of a standard CP is provided, in which each time slot has 14 symbols, and for the digital parameter μ = 2, each subframe has 4 time slots. The time slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, there may be one or more distinct bandwidth portions (BWPs) (see [link to relevant documentation]). Figure 2B These are frequency division multiplexed (BWPs). Each BWP may have a specific digital parameter and CP (normal or extended).

[0052] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) that extends 12 consecutive subcarriers (also known as a physical RB (PRB)). The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0053] like Figure 2A As explained, some REs carry reference (pilot) signals (RS) for the UE. RSs may include demodulation RS (DM-RS) (indicated as R for a particular configuration, but other DM-RS configurations are also possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. RSs may also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0054] Figure 2BExamples of various DL channels within a subframe of a frame are shown. The Physical Downlink Control Channel (PDCCH) carries the DCI in one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising six RE Groups (REGs), each REG comprising twelve consecutive REs in the OFDM symbols of the RB. A PDCCH within a BWP can be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during PDCCH monitoring timing on the CORESET, where PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can reside at higher and / or lower frequencies on the channel bandwidth. The Primary Synchronization Signal (PSS) can be within symbol 2 of a specific subframe of the frame. UE 104 uses the PSS to determine subframe / symbol timing and physical layer identification. The Secondary Synchronization Signal (SSS) can be within symbol 4 of a specific subframe of the frame. The UE uses the SSS to determine the Physical Layer Cell Identifier Group Number and radio frame timing. Based on the Physical Layer Identifier and Physical Layer Cell Identifier Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) can be logically grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also known as an SS block (SSB)). The MIB provides many RBs and System Frame Numbers (SFNs) in the system bandwidth. The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH, such as System Information Blocks (SIBs) and paging messages.

[0055] like Figure 2C As explained, some REs carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are also possible). The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be transmitted in the first one or two symbols preceding the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the comb teeth. The base station can use the SRS for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0056] Figure 2DExamples of various UL channels within a subframe of a frame are shown. The PUCCH can be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), pre-decoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs). The PUCCH carries data and may additionally be used to carry buffer status reports (BSR), power headroom reports (PHR), and / or UCIs.

[0057] Figure 3 This is a block diagram of base station 310 communicating with UE 350 in the access network. In the DL, IP packets from EPC 160 can be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functions. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides RRC layer functions associated with broadcasting system information (e.g., MIB and SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with upper-layer packet data unit (PDU) delivery, error correction via ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and delivery channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.

[0058] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the delivery channel, forward error correction (FEC) decoding / decoding of the delivery channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols can then be segmented into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially pre-decoded to generate multiple spatial streams. The channel estimate from channel estimator 374 can be used to determine the decoding and modulation scheme, as well as for spatial processing. The channel estimate can be derived from the reference signal transmitted by UE 350 and / or channel condition feedback. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can modulate a radio frequency (RF) carrier with the corresponding spatial stream for transmission.

[0059] At UE 350, each receiver 354RX receives signals through its respective antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides this information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams leading to UE 350. If multiple spatial streams are leading to UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. By determining the most probable signal constellation points transmitted by the base station 310, the symbols on each subcarrier and the reference signal are recovered and demodulated. These soft decisions can be based on a channel estimate calculated by the channel estimator 358. The soft decision is then decoded and deinterleaved to recover the data and control signals originally transmitted by base station 310 on the physical channel. The data and control signals are then provided to controller / processor 359, which implements Layer 3 and Layer 2 functions.

[0060] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the delivery channel and the logical channel to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0061] Similar to the functions described in the DL transmission combined with base station 310, controller / processor 359 provides RRC layer functions associated with system information (e.g., MIB and SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, and integrity verification); RLC layer functions associated with upper-layer PDU transmission, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and delivery channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.

[0062] The channel estimate derived by the channel estimator 358 from the reference signal or feedback transmitted from the base station 310 can be used by the TX processor 368 to select an appropriate decoding and modulation scheme and facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via individual transmitters 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0063] The UL transmission is processed at base station 310 in a manner similar to that described in conjunction with the receiver function at UE 350. Each receiver 318RX receives the signal via its respective antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides this information to RX processor 370.

[0064] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the delivery channel and the logical channel to recover IP packets from the UE 350. IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0065] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform operations related to... Figure 1 The MCS / K1 threshold determination component 198 is related to various aspects.

[0066] At least one of the TX processor 316, RX processor 370, and controller / processor 375 can be configured to perform operations related to... Figure 1 The various aspects related to the MCS / K1 threshold processing component 199.

[0067] With the continuous development of wireless technology, higher frequency bands above FR2 (e.g., 24.25 GHz to 52.6 GHz), including bands between 52.6 GHz and 71 GHz, and sub-terahertz (sub-THz) bands above 140 GHz or between 300 GHz and 3 THz, can be used. Compared to beamformations of FR2 or below, higher frequency radio technologies, such as the sub-THz frequency range, can achieve narrower beamformations because more radiating elements can be placed in each given area of ​​the antenna due to the smaller wavelength. Higher frequency bands can have shorter delay spreads (e.g., a few nanoseconds) and can be translated into coherent frequency bandwidths of tens of MHz. Therefore, higher operating frequency bands allow UEs to communicate with base stations or with other UEs using larger bandwidths with higher throughput. However, transmissions between wireless devices using larger bandwidths and / or higher operating frequencies may encounter higher phase noise due to frequency oscillator mismatch between transmitting and receiving wireless devices. As carrier frequencies increase, phase noise effects between wireless devices can become more severe, potentially leading to common phase error (CPE) and / or inter-carrier interference (ICI). CPE can cause identical rotation of received symbols in each subcarrier, while ICI can result in a loss of orthogonality between subcarriers.

[0068] To combat or reduce the effects of phase noise (such as CPE and / or ICI), wireless devices can use a phase tracking reference signal (PT-RS) to track the phase and mitigate performance losses due to phase noise. For example, a receiving wireless device can estimate the transmitted CPE and / or ICI based on the PT-RS transmitted from a transmitting wireless device, and can then perform CPE compensation and / or ICI compensation on the transmission based on the estimated CPE and / or ICI. In other examples, to combat phase noise, the subcarrier spacing (SCS) of the OFDM symbols used by the wireless device can be increased (e.g., increased to 960 kHz, 1920 kHz, 3840 kHz, etc.). For example, with a larger SCS, the wireless device may find it easier to estimate and compensate for phase noise. Furthermore, CPE compensation may be computationally less expensive than ICI compensation. In some examples, for communications in higher frequency bands (e.g., 52.6 GHz, 71 GHz, or higher), the receiving wireless device can apply CPE compensation for transmissions involving large SCS (e.g., 960 kHz) to achieve reasonably good performance without applying ICI compensation. However, for transmissions involving smaller SCS (e.g., 120 kHz), the receiving wireless device can be configured to also apply ICI compensation to achieve the same performance.

[0069] In some examples, the radio frequency (RF) module at the UE may be the primary contributor to phase noise, and the quality of the RF module may vary from UE to UE. For example, for a UE with a higher-quality RF module (e.g., an RF module with higher capability / performance), it may be sufficient for the UE to apply CPE compensation to communications using most modulation and decoding scheme (MCS) values ​​without applying ICI compensation. On the other hand, for a UE with a lower-quality RF module (e.g., an RF module with lower capability / performance), the UE may be configured to apply ICI compensation to communications using some of the MCS values ​​to achieve the same performance, as for communications using 64 quadrature amplitude modulation (QAM) MCS. Besides RF module quality, the UE's processing power may also limit its phase noise compensation capabilities. For example, the UE's processing power may allow it to perform CPE compensation but not ICI compensation, or the UE may be able to perform ICI compensation using a limited number of filter taps, which may not be sufficient for high MCS values.

[0070] The aspects presented herein enable a UE to communicate with a base station using an MCS determined at least in part based on an SCS associated with the communication. When the SCS used for communication with the base station is below an SCS threshold (e.g., if SCS < SCS threshold, MCS < MCS threshold), the aspects presented herein enable the UE to limit the MCS used for communication with the base station to the MCS threshold. For example, if the UE is communicating with the base station at a higher frequency band (e.g., 52.6 GHz 71 GHz), the UE can limit the MCS to 16QAM MCS or lower when the SCS is 120 kHz or lower. The MCS table can be defined or modified for the UE based on the SCS and / or the UE's capabilities, allowing the UE to determine whether to limit the MCS and / or the MCS threshold based on the MCS table. Therefore, the aspects presented herein enable the UE to limit the throughput achievable by the UE to reduce or avoid ICI, or when the ICI is above an ICI threshold.

[0071] Figure 4 This is a communication flow 400 illustrating an example of an MCS that restricts communication between a UE and a base station based on an SCS, according to various aspects of this disclosure. As shown in communication flow 400, at 406, the UE 402 can determine an SCS 408 to be used for communication with the base station 404. The length of the OFDM symbol used for communication can be inversely proportional to the size of the SCS 408 (e.g., OFDM symbol length = 1 / SCS), such that the size of the OFDM symbol can decrease as the SCS increases. For example, as shown in Table 410, which illustrates examples of OFDM symbol lengths (e.g., Tsymb) for different SCSs, an OFDM symbol with an SCS of 30 kHz can have a symbol length of 33333 nanoseconds (ns), an OFDM symbol with an SCS of 120 kHz can have a symbol length of 8333.3 ns, and an OFDM symbol with an SCS of 960 kHz can have a symbol length of 1041.7 ns, etc.

[0072] At 412, UE 402 may determine to limit the MCS (e.g., the MCS used for communication with base station 404) to less than or equal to an MCS threshold 414, wherein the MCS threshold 414 may be determined at least in part based on the determined SCS 408. For example, an MCS table 416 may be defined for UE 402 (or modified from an existing table), which may indicate or specify the MCS threshold 414 for which UE 402 can use different SCSs. For example, in a specific frequency band (e.g., 52.6-71 GHz), if UE 402 selects 120 kHz for SCS 408, then MCS table 416 may indicate that a modulation scheme of 16QAM or lower can be used for communication, and if UE 402 selects 960 kHz for SCS 408, then MCS table 416 may indicate that a modulation scheme of 256QAM or lower can be used for communication, and so on. In some examples, the modulation scheme may include at least one of π / 2-BPSK, QPSK, 16QAM, 64QAM and / or 256QAM.

[0073] In one example, UE 402 may determine, at least in part, whether to limit MCS to less than or equal to MCS threshold 414 based on whether ICI is detected and / or the level of ICI. For example, UE 402 may measure ICI for communication between UE 402 and base station 404. Then, if UE 402 determines that ICI is greater than the ICI threshold, UE 402 may determine to limit MCS to less than MCS threshold 414.

[0074] At 418, UE 402 may send a capability message 420 to base station 404, wherein the capability message 420 may indicate the maximum MCS (e.g., MCS threshold 414) that UE 402 can support. In some examples, capability message 420 may also indicate an overhead parameter that can be associated with the indicated MCS (e.g., MCS threshold 414). For example, UE 402 may recommend an overhead parameter value to base station 404, wherein the overhead parameter may be used by base station 404 to determine the size of transport blocks (TBs) used for communication and / or for scheduling communication. In some examples, the overhead parameter may be selected from a set {0, 6, 12, 18}. In other examples, UE 402 may determine the overhead parameter based on PT-RS density, wherein the PT-RS density may be determined based on PT-RS received from base station 404. For example, an overhead parameter may be assigned to or associated with a PT-RS density or a subset / range of PT-RS densities. Alternatively or additionally, the overhead parameter may also be a function of the determined / used MCS (e.g., MCS threshold 414) and / or the allocation of physical resource blocks (PRBs) associated with the communication.

[0075] In other words, the UE can send a capability message to the base station indicating the maximum MCS the UE can support, along with a recommendation of overhead parameters that can be used for TB calculation. The base station can then schedule the UE based on this recommendation. In some examples, the UE's ability to limit / reduce MCS can be a function of SCS, such that the MCS used by the UE can depend on the SCS. In some examples, the recommended overhead parameters can be tied to PT-RS density, i.e., assigning different values ​​to each PT-RS density. In other examples, the recommended overhead parameters can be a function of the MCS used and / or PRB allocation. The disclosed MCS threshold (e.g., 414) can differ from the MCS cap / limit of a UE with reduced / lower capabilities (e.g., a RedCap UE) because the MCS threshold can depend on the SCS.

[0076] At 422, after UE 402 determines SCS 408 and / or MCS threshold 414, UE 402 can communicate with base station 404 at least based on an MCS less than or equal to the determined MCS threshold 414. For example, if UE 402 (e.g., via capability message 420) indicates to base station 404 that it can support modulation schemes up to 16QAM, then UE 402 can communicate with base station 404 based on an MCS equal to or less than 16QAM (e.g., 16QAM, QPSK, etc.).

[0077] The UE can use HARQ feedback (e.g., ACK or NACK) to indicate the decoding result of the received PDSCH to the base station. Figure 5Communication flow 500 illustrates an example of the HARQ feedback process. At 506, base station 504 may send DL grant 508 to UE 502 (e.g., in the DCI of PDCCH), where DL grant 508 may schedule resources for UE 502 to receive PDSCH 512. DL grant 508 may request UE 502 to provide HARQ feedback for PDSCH 512, and DL grant 508 may also include offset K1 514 (e.g., a feedback gap indicator), which may correspond to the time gap between the time when UE 502 receives PDSCH 512 and the time when UE 502 is expected to send corresponding HARQ feedback for PDSCH 512, for example, via a PUCCH message. At 510, UE 502 may receive the scheduled PDSCH 512 from base station 504. Based on the decoding result of PDSCH 512, at point 516, UE 502 can send HARQ feedback 518 to base station 504. This HARQ feedback indicates whether PDSCH 512 has been successfully decoded, and HARQ feedback 518 can be sent in PUCCH. For example, if UE 502 successfully decodes PDSCH 512, then at point 510, UE 502 can send positive HARQ feedback (e.g., ACK) to base station 504. On the other hand, if UE 502 cannot decode PDSCH 512, for example, if it did not receive PDSCH or the decoding failed, then at point 510, UE 502 can send negative HARQ feedback (e.g., NACK) to base station 504.

[0078] In another aspect of this disclosure, a K1 offset (e.g., a new K1 offset or a modified K1 offset) can be defined for MCSs involved in ICI compensation (e.g., higher-level MCSs), while MCSs not involved in ICI compensation can use another K1 offset (e.g., the original K1 offset or an unmodified K1 offset). In this way, the K1 offset value can be configured to depend on the SCS, which can reduce the burden of processing complexity associated with ICI compensation for the UE.

[0079] Figure 6 This is a communication flow 600 illustrating an example of limiting the K1 offset for communication between a UE and a base station based on an SCS or an MCS associated with an SCS, according to various aspects of this disclosure. As shown in communication flow 600, at 606, the UE 602 can determine an SCS 608 to be used for communication with the base station 604. The length of the OFDM symbol can be inversely proportional to the size of the SCS (e.g., OFDM symbol length = 1 / SCS), such that the size of the OFDM symbol can decrease as the SCS increases. For example, as shown in Table 610, Table 610 shows examples of OFDM symbol lengths (e.g., Tsymb) for different SCSs.

[0080] At 612, UE 602 may determine that the K1 offset between receiving DL data and sending ACK / NACK feedback is limited to a K1 offset threshold 614, wherein the K1 offset threshold 614 may be determined at least in part based on the determined SCS 608. For example, a K1 offset table 616 may be defined for UE 602 (or modified from an existing table), which may indicate or specify the K1 offset threshold 614 that UE 602 may use for different SCSs and / or MCSs. The value of the K1 offset threshold 614 may be determined at least in part based on whether ICI compensation is involved for the corresponding SCS and / or MCS. For example, if UE 602 selects 120 kHz for SCS 608 using a 64QAM MCS and involving ICI compensation, then the K1 offset table 616 may indicate that the minimum value of the K1 offset threshold 614 is eight (8) slots. On the other hand, if the SCS 608 selected by UE 602 does not involve ICI compensation, then UE 602 may apply another K1 offset threshold 614. For example, if UE 602 selects 960KHz for SCS 608 using 256QAM MCS and not involving ICI compensation, then K1 offset table 616 may indicate that the minimum value of K1 offset threshold 614 is four (4) time slots.

[0081] In one example, UE 602 may determine, at least in part, whether to limit the KI offset to be greater than or equal to the K1 offset threshold 614 based on whether an ICI is detected and / or the level of the ICI. For example, UE 602 may measure the ICI for communication between UE 602 and base station 604. Then, if UE 602 determines that the ICI is greater than the ICI threshold, UE 602 may determine to limit the K1 offset to be greater than the K1 offset threshold 614.

[0082] At 618, UE 602 may send a capability message 620 to base station 604, wherein the capability message 620 may indicate the minimum K1 offset that UE 602 can support (e.g., K1 offset threshold 614). In some examples, the capability message 620 may also indicate an overhead parameter associated with the MCS. For example, UE 602 may recommend an overhead parameter value to base station 604, wherein the overhead parameter may be used by base station 604 to determine the size of the transport block (TB) for communication and / or for scheduling communication. In some examples, the overhead parameter may be selected from one of the set {0, 6, 12, 18}. In other examples, UE 602 may determine the overhead parameter based on the PT-RS density, wherein the PT-RS density may be determined based on the PT-RS received from base station 604. For example, an overhead parameter may be assigned to or associated with the PT-RS density or a subset / range of the PT-RS density.

[0083] In other words, for UEs with a more lenient (e.g., longer) SCS and / or MCS that do not involve ICI compensation, a new timeline / offset K1' involving ICI compensation can be defined. For example, a high MCS (e.g., 64 or 256QAM) used with a low SCS (e.g., 120 kHz) can use a different offset K1 (e.g., a shorter offset K1 or the original offset K1). Therefore, the offset K1 can be SCS-dependent, which can reduce the processing complexity burden on the UE.

[0084] At 622, after UE 602 determines SCS 608 and / or K1 offset threshold 614, UE 602 may communicate with base station 604 at least based on the K1 offset being greater than or equal to the determined K1 offset threshold 614. For example, if UE 602 indicates to base station 604 (e.g., via capability message 620) that it can support a minimum K1 offset threshold of eight (8) time slots, then base station 604 may schedule an offset K1 (e.g., 514) equal to or greater than eight time slots (e.g., K1 ≥ 8 time slots) for UE 602.

[0085] Figure 7 This is a flowchart 700 of a wireless communication method. The method can be executed by a UE or a component of a UE (e.g., UE 104, 350, 402, 502, 602; device 702; processing system, which may include memory 360 and may be the entire UE 350 or components of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). The method enables the UE to limit the MCS and / or K1 offset used for communicating with the base station to a threshold, at least in part, based on the SCS used for communication.

[0086] At 702, the UE can determine the subcarrier spacing used for communication with the base station, for example, by combining... Figure 4 and Figure 6 As described above. For example, at 406, UE 402 can determine SCS 408 for communicating with base station 404. The subcarrier spacing can be determined, for example, by... Figure 8 The SCS determination component 840 of the device 802 in the middle is used to perform this.

[0087] At 704, based on the determined subcarrier spacing, the UE can determine to limit at least one of the MCS or K1 offset: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, where the K1 offset can be the number of time slots between receiving DL data and sending ACK / NACK feedback, such as in combination with Figure 4 and Figure 6 As described above. For example, at 412, UE 402 can determine, based on the determined SCS 408, to limit the MCS to less than or equal to the MCS threshold 414, or at 612, UE can determine, based on the determined SCS 608, to limit the K1 offset between receiving DL data and sending ACK / NACK feedback to greater than or equal to the K1 offset threshold 614. This can be achieved, for example, by... Figure 8 The device 802 in the middle uses the MCS / K1 threshold component 842 to perform the determination of limiting MCS and / or K1 offset.

[0088] At point 706, if the UE determines to limit the MCS to less than or equal to the MCS threshold, the UE can send a capability message to the base station indicating the maximum MCS that the UE can support, where the maximum MCS can be the MCS threshold, for example, combined with... Figure 4 As described above. For example, at 418, UE 402 can send a capability message 420 indicating the maximum MCS that UE 402 can support. The transmission of the capability message can, for example, be... Figure 8 The device 802 in the middle is used to perform the message component 844 and / or the transmission component 834.

[0089] In one example, the capability message can also indicate overhead parameters associated with the MCS. In such an example, the UE can determine the overhead parameters based on the PT-RS density received from the base station.

[0090] In one example, after sending a capability message, the UE can receive communication from the base station, where scheduling can be based on the sent capability message.

[0091] In another example, the UE can determine that the ICI is greater than a threshold when communicating with the base station, so that the determination of limiting the MCS to less than or equal to the MCS threshold can also be based on the ICI being greater than the threshold.

[0092] At point 708, if the UE determines that it will limit the K1 offset to a value greater than or equal to the K1 offset threshold, the UE can send a capability message to the base station indicating the minimum K1 offset that the UE can support, where the minimum K1 offset can be the K1 offset threshold, for example, combined with... Figure 6 As described above. For example, at 618, UE 602 can send a capability message 620 indicating the minimum K1 offset that the UE can support. The transmission of the capability message can, for example, be... Figure 8 The device 802 in the middle is used to perform the message component 844 and / or the transmission component 834.

[0093] In one example, the UE can determine that the ICI is greater than a threshold when communicating with the base station, such that the determination of limiting the K1 offset to be greater than or equal to the K1 offset threshold can also be based on the ICI being greater than that threshold.

[0094] At point 710, the UE can communicate with the base station based on at least one of the following two conditions: the MCS is less than or equal to the determined MCS threshold, or the K1 offset is greater than or equal to the K1 offset threshold. Figure 4 and Figure 6 As described above. For example, at 422, UE 402 can communicate with base station 404 based on MCS being less than or equal to a determined MCS threshold 414, or at 622, UE 602 can communicate with base station 604 based on K1 offset being greater than or equal to a determined K1 offset threshold 614. Communication can, for example, be provided by... Figure 8 The communication component 846, the receiving component 830, and / or the transmission component 834 of the device 802 are used to perform this function.

[0095] Figure 8 Figure 800 illustrates an example of a hardware implementation for device 802. Device 802 is a UE and includes a cellular baseband processor 804 (also referred to as a modem) coupled to a cellular RF transceiver 822 and one or more Subscriber Identity Module (SIM) cards 820, an application processor 806 coupled to a Secure Digital Card (SD) card 808 and a screen 810, a Bluetooth module 812, a Wireless Local Area Network (WLAN) module 814, a Global Positioning System (GPS) module 816, and a power supply 818. The cellular baseband processor 804 communicates with the UE 104 and / or BS 102 / 180 via the cellular RF transceiver 822. The cellular baseband processor 804 may include a computer-readable medium / memory. This computer-readable medium / memory may be non-transitory. The cellular baseband processor 804 is responsible for general processing, including executing software stored on the computer-readable medium / memory. When executed by the cellular baseband processor 804, this software causes the cellular baseband processor 804 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 804 during software execution. The cellular baseband processor 804 also includes a receiving component 830, a communication manager 832, and a transmission component 834. The communication manager 832 includes one or more of the components shown. The components within the communication manager 832 can be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 804. The cellular baseband processor 804 can be a component of the UE 350 and can include a memory 360 and / or at least one of a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 802 can be a modem chip and includes only the baseband processor 804; in another configuration, the device 802 can be the entire UE (e.g., see...). Figure 3(350), and includes an additional module of device 802.

[0096] Communication manager 832 includes SCS determination component 840, which is configured to determine the subcarrier spacing used for communication with the base station, for example, as in combination with Figure 7 As described in section 702. The communication manager 832 also includes an MCS / K1 threshold component 842, which is configured to determine, based on a determined subcarrier spacing, to limit at least one of the MCS or K1 offset: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, wherein the K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback, for example, as in combination Figure 7 As described in 704. The communication manager 832 also includes a capability message component 844 configured to send a capability message to the base station indicating the maximum MCS that the UE can support, where the maximum MCS is an MCS threshold and / or indicating the minimum K1 offset that the UE can support, where the minimum K1 offset is a K1 offset threshold, for example, as in combination with... Figure 7 As described in 706 and / or 708. The communication manager 832 also includes a communication component 846 configured to communicate with the base station based on at least one of the following two conditions: the MCS is less than or equal to a determined MCS threshold or the K1 offset is greater than or equal to a K1 offset threshold, for example, as in combination with... Figure 7 As stated in 710.

[0097] The apparatus may include execution Figure 7 Each of the additional components in the algorithm's box in the flowchart is an additional component. Thus, in Figure 7 Each box in the flowchart can be executed by a component, and the apparatus can include one or more of those components. A component can be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for processor implementation, or some combination thereof.

[0098] In one configuration, device 802, particularly cellular baseband processor 804, includes components for determining a subcarrier spacing for communicating with a base station (e.g., SCS determination component 840). Device 802 includes components (e.g., MCS / K1 component 842) for determining, based on the determined subcarrier spacing, to limit at least one of MCS or K1 offset: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, where the K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback. Device 802 includes components (e.g., communication component 846, receiving component 830, and / or transmission component 834) for communicating with the base station based on at least one of the following conditions: the MCS is less than or equal to the determined MCS threshold or the K1 offset is greater than or equal to the K1 offset threshold.

[0099] In one configuration, if device 802 determines that the MCS is limited to be less than or equal to an MCS threshold, device 802 may include components for sending a capability message to the base station indicating the maximum MCS that device 802 can support, wherein the maximum MCS may be the MCS threshold (e.g., capability message component 844 and / or transmission component 834). In such a configuration, the capability message may also indicate overhead parameters associated with the MCS. In such a configuration, device 802 may determine the overhead parameters based on the PT-RS density received from the base station.

[0100] In one configuration, after sending a capability message, the device 802 can receive communication from a base station, wherein scheduling can be based on the sent capability message.

[0101] In one configuration, the device 802 may include components for determining that the ICI is greater than a threshold when communicating with a base station, such that the components for determining that the MCS is limited to be less than or equal to the MCS threshold may also be based on the ICI being greater than the threshold.

[0102] In one configuration, if device 802 determines that the K1 offset is limited to be greater than or equal to a K1 offset threshold, then device 802 may include components for sending a capability message to a base station indicating the minimum K1 offset that device 802 can support, wherein the minimum K1 offset may be the K1 offset threshold (e.g., capability message component 844 and / or transmission component 834). In such a configuration, device 802 may include components for determining that the ICI is greater than a threshold when communicating with a base station, such that the determination of limiting the K1 offset to be greater than or equal to the K1 offset threshold may also be based on the ICI being greater than the threshold.

[0103] The component may be one or more of the components of device 802, configured to perform the functions described therein. As described above, device 802 may include TX processor 368, RX processor 356, and controller / processor 359. Thus, in one configuration, the component may be TX processor 368, RX processor 356, and controller / processor 359 configured to perform the functions described therein.

[0104] Figure 9 This is a flowchart 900 of a wireless communication method. The method can be executed by a base station or components of a base station (e.g., base stations 102, 180, 310, 404, 504, 604; device 1002; a processing system that may include memory 376 and may be the entire base station 310 or components of base station 310, such as TX processor 316RX, RX processor 370, and / or controller / processor 375). The method enables the base station to communicate with a UE (e.g., UE 104) based on an MCS and / or K1 offset indicated or supported by the UE.

[0105] At position 902, the base station can receive a capability message from the UE indicating the maximum MCS or minimum K1 offset that the UE can support. This maximum MCS or minimum K1 offset can be based on the subcarrier spacing, such as in combination with... Figure 4 and Figure 6 As described above. For example, at 418, base station 404 can receive a capability message 420 from UE 402 indicating the maximum MCS that UE 402 can support, or at 618, base station 604 can receive a capability message 620 from UE 602 indicating the minimum K1 offset that UE can support. The reception of the capability message can, for example, be performed by... Figure 10 The device 1002 in the middle is capable of message processing component 1040 and / or receiving component 1030 to perform the operation.

[0106] At position 904, the base station can send PT-RS to the UE. In one example, this capability message can also indicate an overhead parameter associated with the maximum MCS, where the overhead parameter can be based on the PT-RS density, such as in combination with... Figure 4 The PT-RS transmission can be, for example, by... Figure 10 The PT-RS component 1042 and / or transmission component 1034 of the device 1002 are used to perform this function.

[0107] At 906, the base station can determine the size of the TB used for communication with the UE based on overhead parameters, wherein communication with the UE can be based on the size determined for the TB, for example, as combined with Figure 4 The TB size can be determined, for example, by... Figure 10The TB size determination component 1044 of the device 1002 in the middle is used to perform this.

[0108] At point 908, the base station can send a communication schedule to the UE, which can be based on received capability messages, such as combined with... Figure 4 and Figure 6 The scheduled transmission can, for example, be... Figure 10 The transmission component 1034 of the intermediate device 1002 is executed.

[0109] At point 910, the base station can communicate with the UE based on at least one of the following two conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset. (This is in conjunction with...) Figure 4 and Figure 6 As described above. For example, at 422, base station 404 can communicate with UE 402 based on an MCS less than or equal to the maximum MCS (e.g., MCS threshold 414), or at 622, base station 604 can communicate with UE 602 based on a K1 offset greater than or equal to the minimum K1 offset (e.g., K1 offset threshold 614). Communication can, for example, be provided by... Figure 10 The communication component 1046, receiving component 1030, and / or transmitting component 1034 of the device 1002 are used to perform this function.

[0110] Figure 10 Figure 1000 illustrates an example of a hardware implementation for device 1002. Device 1002 is a BS and includes a baseband unit 1004. Baseband unit 1004 can communicate with UE 104 via a cellular RF transceiver. Baseband unit 1004 may include computer-readable medium / memory. Baseband unit 1004 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. When executed by baseband unit 1004, the software causes baseband unit 1004 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by baseband unit 1004 during software execution. Baseband unit 1004 also includes a receiving component 1030, a communication manager 1032, and a transmitting component 1034. Communication manager 1032 includes one or more of the components shown. Components within communication manager 1032 may be stored in computer-readable medium / memory and / or configured as hardware within baseband unit 1004. The baseband unit 1004 may be a component of the BS 310 and may include at least one of the memory 376 and / or the TX processor 316, the RX processor 370, and the controller / processor 375.

[0111] Communication manager 1032 includes capability processing component 1040, which is configured to receive from the UE a capability message indicating the maximum MCS or minimum K1 offset that the UE can support, the maximum MCS or the minimum K1 offset being based on subcarrier spacing, for example, as combined with Figure 9 As described in 902. The communication manager 1032 also includes a PT-RS component 1042 configured to transmit PT-RS to the UE, the overhead parameter being based on the PT-RS density, for example, as in conjunction with... Figure 9 As described in 904. The communication manager 1032 also includes a TB size determination component 1044, which is configured to determine the size of the TB used for communication with the UE based on overhead parameters, wherein communication with the UE is based on the size determined for the TB, for example, as in combination with Figure 9 As described in 906. The communication manager 1032 also includes a communication component 1046 configured to communicate with the UE based on at least one of the following two conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset, for example, as in combination with Figure 9 As stated in 910.

[0112] The device may include execution Figure 9 Each of the additional components in the algorithm's box in the flowchart is an additional component. Thus, in Figure 9 Each box in the flowchart can be executed by a component, and the apparatus can include one or more of those components. A component can be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for processor implementation, or some combination thereof.

[0113] In one configuration, the device 1002, particularly the baseband unit 1004, includes components for receiving from the UE a capability message indicating the maximum MCS or minimum K1 offset that the UE can support, the maximum MCS or minimum K1 offset being based on subcarrier spacing (e.g., capability processing component 1040 and / or receiving component 1030). The device 1002 also includes components for communicating with the UE based on at least one of the following conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset (e.g., communication component 1046, receiving component 1030, and / or transmission component 1034).

[0114] In one configuration, the capability message also indicates an overhead parameter associated with the maximum MCS. In such a configuration, the apparatus 1002 includes components for determining the size of the TB used for communication with the UE based on the overhead parameter, wherein communication with the UE is based on the determined TB size (e.g., TB size determination component 1044 and / or communication component 1046). In such a configuration, the apparatus 1002 includes components for transmitting PT-RS to the UE, the overhead parameter being based on the PT-RS density (e.g., transmission component 1034).

[0115] In another configuration, the device 1002 includes components (e.g., transmission component 1034) for sending a scheduling of communications to the UE based on a received capability message.

[0116] The component may be one or more of the components of device 1002, configured to perform the functions described therein. As described above, device 1002 may include TX processor 316, RX processor 370, and controller / processor 375. Thus, in one configuration, the component may be TX processor 316, RX processor 370, and controller / processor 375 configured to perform the functions described therein.

[0117] Figure 11 This is a flowchart 1100 of a wireless communication method. The method can be executed by a UE or a component of a UE (e.g., UE 104, 350, 402, 502, 602; device 1202; processing system, which may include memory 360 and may be the entire UE 350 or components of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). The method enables the UE to limit the MCS and / or K1 offset used for communicating with the base station to a threshold, at least in part, based on the SCS used for communication.

[0118] At 1102, based on the subcarrier spacing selected for communication with the base station, the UE can limit at least one of the MCS or K1 offset: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, where the K1 offset can be the number of time slots between receiving DL data and sending ACK / NACK feedback, such as in combination with... Figure 4 and Figure 6 As described above. For example, at 412, UE 402 can limit MCS to less than or equal to MCS threshold 414 based on SCS 408, or at 612, UE can determine, based on SCS 608, to limit the K1 offset between receiving DL data and sending ACK / NACK feedback to greater than or equal to K1 offset threshold 614. This can be achieved, for example, by... Figure 12 The MCS / K1 limiting component 1240 of the device 1202 in the middle performs the limiting of MCS and / or K1 offset.

[0119] In one example, if the UE limits the MCS to less than or equal to an MCS threshold, the UE can send a capability message to the base station indicating the maximum MCS that the UE can support, where the maximum MCS can be the MCS threshold, for example, combined with... Figure 4 For example, at 418, UE 402 may send a capability message 420 indicating the maximum MCS that UE 402 can support.

[0120] In another example, the capability message can also indicate overhead parameters associated with the MCS. In such an example, the UE can determine the overhead parameters based on the PT-RS density received from the base station.

[0121] In another example, after sending a capability message, the UE can receive communication from the base station, where scheduling can be based on the sent capability message.

[0122] In another example, the UE can measure ICI while communicating with the base station, and the limitation that MCS is less than or equal to the MCS threshold can also be based on ICI being greater than the ICI threshold.

[0123] In another example, if the UE limits the K1 offset to be greater than or equal to a K1 offset threshold, the UE can send a capability message to the base station indicating the minimum K1 offset that the UE can support, where the minimum K1 offset can be the K1 offset threshold, for example, combined with... Figure 6 For example, at 618, UE 602 may send a capability message 620 indicating the minimum K1 offset that the UE can support.

[0124] In another example, the UE can measure ICI while communicating with the base station, such that the limitation that K1 offset is greater than or equal to a K1 offset threshold can also be based on ICI being greater than that threshold.

[0125] At point 1104, the UE can communicate with the base station based on at least one of the following two conditions: MCS is less than or equal to the MCS threshold or K1 offset is greater than or equal to the K1 offset threshold, such as combining... Figure 4 and Figure 6 As described above. For example, at 422, UE 402 can communicate with base station 404 based on MCS being less than or equal to MCS threshold 414, or at 622, UE 602 can communicate with base station 604 based on K1 offset being greater than or equal to K1 offset threshold 614. Communication can, for example, be provided by... Figure 12The communication component 1242, the receiving component 1230, and / or the transmission component 1234 of the device 1202 are used to perform this function.

[0126] Figure 12 Figure 1200 illustrates an example of a hardware implementation for device 1202. Device 1202 is a UE and includes a cellular baseband processor 1204 (also referred to as a modem) coupled to a cellular RF transceiver 1222 and one or more Subscriber Identity Module (SIM) cards 1220, an application processor 1206 coupled to a Secure Digital Card (SD) card 1208 and a screen 1210, a Bluetooth module 1212, a Wireless Local Area Network (WLAN) module 1214, a Global Positioning System (GPS) module 1216, and a power supply 1218. The cellular baseband processor 1204 communicates with the UE 104 and / or BS 102 / 180 via the cellular RF transceiver 1222. The cellular baseband processor 1204 may include computer-readable media / memory. The computer-readable media / memory may be non-transitory. The cellular baseband processor 1204 is responsible for general processing, including executing software stored on the computer-readable media / memory. When executed by the cellular baseband processor 1204, the software causes the cellular baseband processor 1204 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 1204 during software execution. The cellular baseband processor 1204 also includes a receiving component 1230, a communication manager 1232, and a transmission component 1234. The communication manager 1232 includes one or more of the components shown. The components within the communication manager 1232 can be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1204. The cellular baseband processor 1204 can be a component of the UE 350 and can include a memory 360 and / or at least one of a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 1202 can be a modem chip and includes only the baseband processor 1204; in another configuration, the device 1202 can be the entire UE (e.g., see...). Figure 3 (350), and includes an additional module of device 1202.

[0127] Communication manager 1232 also includes an MCS / K1 threshold limiting component 1240, which is configured to limit at least one of the MCS or K1 offset based on the subcarrier spacing selected for communication with the base station: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, wherein the K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback, for example, as in combination Figure 11As described in 1102. The communication manager 1232 also includes a communication configuration component 1242, which is configured to communicate with the base station based on at least one of the following two conditions: the MCS is less than or equal to a determined MCS threshold or the K1 offset is greater than or equal to a K1 offset threshold, for example, as in combination with Figure 11 As stated in 1104.

[0128] The device may include execution Figure 11 Each of the additional components in the algorithm's box in the flowchart is an additional component. Thus, in Figure 11 Each box in the flowchart can be executed by a component, and the apparatus can include one or more of those components. A component can be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for processor implementation, or some combination thereof.

[0129] In one configuration, device 1202, particularly cellular baseband processor 1204, includes components for limiting at least one of MCS or K1 offset based on a subcarrier spacing selected for communication with a base station: limiting the MCS to less than or equal to an MCS threshold or limiting the K1 offset to greater than or equal to a K1 offset threshold, where the K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback (e.g., MCS / K1 limiting component 1240). Device 1202 includes components for communicating with a base station based on at least one of the following conditions: the MCS is less than or equal to the MCS threshold or the K1 offset is greater than or equal to the K1 offset threshold (e.g., communication configuration component 1242, receiving component 1230, and / or transmitting component 1234).

[0130] In one configuration, if the apparatus 1202 includes components for limiting the MCS to less than or equal to an MCS threshold, then the apparatus 1202 may include components for sending a capability message to the base station indicating the maximum MCS that the apparatus 1202 can support, wherein the maximum MCS may be the MCS threshold (e.g., capability message component 1244 and / or transmission component 1234). In such a configuration, the capability message may also indicate overhead parameters associated with the MCS. In such a configuration, the apparatus 1202 may determine the overhead parameters based on the PT-RS density received from the base station.

[0131] In one configuration, after sending a capability message, the device 1202 can receive communication from a base station, wherein scheduling can be based on the sent capability message.

[0132] In one configuration, the device 1202 may include components for measuring ICI when communicating with a base station, such that components for determining that the MCS is limited to less than or equal to an MCS threshold may also be based on the ICI being greater than the threshold.

[0133] In one configuration, if the apparatus 1202 includes components for limiting the K1 offset to be greater than or equal to a K1 offset threshold, then the apparatus 1202 may include components for sending a capability message to a base station indicating a minimum K1 offset that the apparatus 1202 can support, wherein the minimum K1 offset may be a K1 offset threshold (e.g., capability message component 1244 and / or transmission component 1234). In such a configuration, the apparatus 1202 may include components for determining that the ICI is greater than a threshold when communicating with a base station, such that the determination of limiting the K1 offset to be greater than or equal to the K1 offset threshold may also be based on the ICI being greater than the threshold.

[0134] The component may be one or more of the components of device 1202, configured to perform the functions described therein. As described above, device 1202 may include TX processor 368, RX processor 356, and controller / processor 359. Thus, in one configuration, the component may be TX processor 368, RX processor 356, and controller / processor 359 configured to perform the functions described therein.

[0135] The following examples illustrate additional aspects and are merely illustrative, and their aspects may be combined with aspects or teachings of other embodiments described herein without limitation.

[0136] Aspect 1 is a method for wireless communication at a UE, the method comprising: determining a subcarrier spacing for communicating with a base station; determining, based on the determined subcarrier spacing, to limit at least one of MCS or K1 offset: limiting MCS to less than or equal to an MCS threshold or limiting K1 offset to greater than or equal to a K1 offset threshold, wherein the K1 offset is the number of time slots between receiving DL data and sending ACK / NACK feedback; and communicating with the base station based on at least one of the following two conditions: MCS is less than or equal to the determined MCS threshold or K1 offset is greater than or equal to the K1 offset threshold.

[0137] In aspect 2, the method according to aspect 1 further includes: determining to restrict at least one of MCS or K1 offset: restricting MCS to less than or equal to an MCS threshold or restricting K1 offset to greater than or equal to a K1 offset threshold, including determining to restrict MCS to less than or equal to an MCS threshold.

[0138] In aspect 3, the method according to aspect 1 or aspect 2 further includes: when communicating with a base station, determining that the ICI is greater than a threshold, wherein the determination of limiting the MCS to be less than or equal to the MCS threshold is also based on the ICI being greater than the threshold.

[0139] In aspect 4, the method according to any one of aspects 1-3 further includes: sending a capability message to the base station indicating the maximum MCS that the UE can support, the maximum MCS being an MCS threshold.

[0140] In aspect 5, the method according to any one of aspects 1-4 further includes the capability message also indicating overhead parameters associated with the MCS.

[0141] In aspect 6, the method according to any one of aspects 1-5 further includes determining overhead parameters based on the PT-RS density received from the base station.

[0142] In aspect 7, the method according to any one of aspects 1-6 further includes receiving communication from a base station and scheduling based on the sent capability message.

[0143] In aspect 8, the method according to any one of aspects 1-7 further includes: determining to limit at least one of MCS or K1 offset: limiting MCS to less than or equal to an MCS threshold or limiting K1 offset to greater than or equal to a K1 offset threshold, including determining to limit K1 offset to greater than or equal to a K1 offset threshold.

[0144] In aspect 9, the method according to any one of aspects 1-8 further includes: when communicating with a base station, determining that ICI is greater than a threshold, wherein the determination of limiting K1 offset to be greater than or equal to the K1 offset threshold is also based on ICI being greater than the threshold.

[0145] In aspect 10, the method according to any one of aspects 1-9 further includes: sending a capability message to the base station indicating a minimum K1 offset that the UE can support, the minimum K1 offset being a K1 offset threshold.

[0146] Aspect 11 is an apparatus for wireless communication, comprising at least one processor coupled to a memory and configured to implement the method as described in any one of aspects 1 to 10.

[0147] Aspect 12 is an apparatus for wireless communication, including components for implementing the method described in any one of aspects 1-10.

[0148] Aspect 13 is a non-transitory computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement the method as described in any one of aspects 1 to 10.

[0149] Aspect 14 is a method for wireless communication at a base station, comprising: receiving from a UE a capability message indicating a maximum MCS or a minimum K1 offset that the UE can support, the maximum MCS or the minimum K1 offset being based on a subcarrier spacing; and communicating with the UE based on at least one of the following two conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset.

[0150] In aspect 15, the method according to aspect 14 also includes the capability message further indicating the overhead parameter associated with the maximum MCS.

[0151] In aspect 16, the method according to aspect 14 or aspect 15 further includes determining the size of the TB for communicating with the UE based on an overhead parameter, wherein the communication with the UE is based on the size determined for the TB.

[0152] In aspect 17, the method according to any one of aspects 14-16 further includes sending a PT-RS to the UE, the overhead parameter being based on the PT-RS density.

[0153] In aspect 18, the method according to any one of aspects 14-17 further includes sending a scheduling for communication to the UE, the scheduling being based on a received capability message.

[0154] Aspect 19 is an apparatus for wireless communication, comprising at least one processor coupled to a memory and configured to implement the method as described in any one of aspects 14 to 18.

[0155] Aspect 20 is an apparatus for wireless communication, including components for implementing the method described in any one of aspects 14 to 18.

[0156] Aspect 21 is a non-transitory computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement the method as described in any one of aspects 14 to 18.

[0157] Aspect 22 is an apparatus for wireless communication, the apparatus including at least one processor coupled to a memory and configured to: limit at least one of MCS or K1 offset based on a subcarrier spacing selected for communication with a base station: limiting MCS to less than or equal to an MCS threshold or limiting K1 offset to greater than or equal to a K1 offset threshold, the K1 offset being the number of time slots between receiving DL data and sending ACK / NACK feedback; and communicate with the base station based on at least one of the following two conditions: MCS is less than or equal to the MCS threshold or K1 offset is greater than or equal to the K1 offset threshold.

[0158] Aspect 23 is the apparatus according to aspect 22, wherein, in order to limit at least one of MCS or K1 offset: limiting MCS to less than or equal to an MCS threshold or limiting K1 offset to greater than or equal to a K1 offset threshold, at least one processor and memory are further configured to limit MCS to less than or equal to an MCS threshold.

[0159] Aspect 24 is an apparatus according to any one of aspects 22 and 23, wherein at least one processor and memory are further configured to: measure ICI when communicating with a base station, wherein limiting MCS to less than or equal to an MCS threshold is also based on ICI being greater than an ICI threshold.

[0160] Aspect 25 is an apparatus according to any one of aspects 22 to 24, wherein at least one processor and memory are further configured to: send a capability message to the base station indicating the maximum MCS that the UE can support, the maximum MCS being an MCS threshold.

[0161] Aspect 26 is the apparatus according to any one of aspects 22 to 25, wherein the capability message further indicates overhead parameters associated with the MCS.

[0162] Aspect 27 is an apparatus according to any one of aspects 22 to 26, wherein at least one processor and memory are further configured to select overhead parameters based on the PT-RS density received from the base station.

[0163] Aspect 28 is an apparatus according to any one of aspects 22 to 27, wherein at least one processor and memory are further configured to: receive a scheduling for communication from a base station, the scheduling being based on a transmitted capability message.

[0164] Aspect 29 is an apparatus according to aspects 22 to 28, wherein, in order to limit at least one of MCS or K1 offset: limiting MCS to less than or equal to an MCS threshold or limiting K1 offset to greater than or equal to a K1 offset threshold, at least one processor and memory are further configured to limit K1 offset to greater than or equal to a K1 offset threshold.

[0165] Aspect 30 is an apparatus according to any one of aspects 22 to 29, wherein at least one processor and memory are further configured to: measure ICI when communicating with a base station, wherein limiting K1 offset to be greater than or equal to a K1 offset threshold is also based on ICI being greater than an ICI threshold.

[0166] Aspect 31 is an apparatus according to any one of aspects 22 to 30, wherein at least one processor and memory are further configured to: send a capability message to the base station indicating a minimum K1 offset that the UE can support, the minimum K1 offset being a K1 offset threshold.

[0167] Aspect 32 is a method for implementing wireless communication in any of aspects 22 to 31.

[0168] Aspect 33 is a device for wireless communication, including components for implementing any one of aspects 22 to 31.

[0169] Aspect 34 is a computer-readable medium storing computer-executable code, wherein when executed by a processor, the code causes the processor to implement any one of aspects 22 to 31.

[0170] Aspect 35 is an apparatus for wireless communication, the apparatus including at least one processor coupled to a memory and configured to: receive from a UE a capability message indicating the maximum MCS or minimum K1 offset that the UE can support, the maximum MCS or the minimum K1 offset being based on a subcarrier spacing; and communicate with the UE based on at least one of the following two conditions: the MCS is less than or equal to the maximum MCS or the K1 offset is greater than or equal to the minimum K1 offset.

[0171] Aspect 36 is the apparatus according to aspect 35, wherein the capability message also indicates overhead parameters associated with the maximum MCS.

[0172] Aspect 37 is an apparatus according to any one of aspects 35 and 36, wherein at least one processor and memory are further configured to select the size of the TB for communicating with the UE based on an overhead parameter, wherein the communication with the UE is based on the size of the TB.

[0173] Aspect 38 is an apparatus according to any one of aspects 35 to 37, wherein at least one processor and memory are further configured to: transmit PT-RS to the UE, the overhead parameter being based on the PT-RS density.

[0174] Aspect 39 is an apparatus according to any one of aspects 35 to 38, wherein at least one processor and memory are further configured to: send a scheduling for communication to the UE, the scheduling being based on a received capability message.

[0175] Aspect 40 is a method for implementing wireless communication in any of aspects 35 to 39.

[0176] Aspect 41 is a device for wireless communication, including components for implementing any one of aspects 35 to 39.

[0177] Aspect 42 is a computer-readable medium storing computer-executable code, wherein when executed by a processor, the code causes the processor to implement any one of aspects 35 to 39.

[0178] It should be understood that the specific order or hierarchy of blocks in the disclosed process / flowchart is illustrative of the exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of blocks in the process / flowchart can be rearranged. Furthermore, some blocks can be combined or omitted. The claims of the appended method present the elements of the various blocks in a sample order and are not intended to limit the specific order or hierarchy presented.

[0179] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to limit themselves to the aspects shown herein, but should be given the full scope consistent with the language of the claims, wherein, unless specifically stated otherwise, references to elements in the singular form do not mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the time of,” should be interpreted as meaning “under this condition,” rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to the occurrence of an action or during the occurrence of an action, but only imply that an action will occur when a condition is met, without requiring a specific or immediate temporal constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless expressly stated otherwise, the term “some” means one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are known or hereafter known to those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Moreover, regardless of whether the contents disclosed herein are expressly recited in the claims, they are not intended to be disclosed to the public. The words “module,” “mechanism,” “component,” and “device” may not replace the word “part.” Therefore, unless an element is explicitly stated using the phrase “part for…,” no claim to an element should be interpreted as a part plus a function.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor, the at least one processor being coupled to the memory and configured to: When the communication frequency used for communication with the base station is higher than 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, the modulation and decoding scheme (MCS) used for the communication is limited to less than or equal to 16-quadrature amplitude modulation (16-QAM). When the communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, a capability message indicating that the maximum MCS that the UE can support is 16-QAM is sent to the base station; as well as When the communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, an MCS with a frequency less than or equal to the 16-QAM is used to communicate with the base station.

2. The apparatus of claim 1, wherein, The at least one processor and the memory are further configured to: When communicating with the base station, inter-carrier interference (ICI) is measured, wherein limiting the MCS to be less than or equal to the 16-QAM is also based on the ICI being greater than the ICI threshold.

3. The apparatus of claim 1, wherein the capability message further indicates overhead parameters associated with the MCS.

4. The apparatus of claim 3, wherein, The at least one processor and the memory are further configured to: The overhead parameters are selected based on the phase tracking reference signal (PT-RS) density.

5. The apparatus of claim 1, wherein, The at least one processor and the memory are further configured to: The system receives a schedule for the communication from the base station, the schedule being based on the capability message.

6. A method for conducting wireless communication at a user equipment (UE), comprising: When the communication frequency used for communication with the base station is higher than 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, the modulation and decoding scheme (MCS) used for the communication is limited to less than or equal to 16-quadrature amplitude modulation (16-QAM). When the communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, a capability message indicating that the maximum MCS that the UE can support is 16-QAM is sent to the base station; as well as When the communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, an MCS with a frequency less than or equal to the 16-QAM is used to communicate with the base station.

7. The method of claim 6, further comprising: When communicating with the base station, inter-carrier interference (ICI) is measured, wherein limiting the MCS to be less than or equal to the 16-QAM is also based on the ICI being greater than the ICI threshold.

8. The method of claim 6, wherein the capability message further indicates overhead parameters associated with the MCS.

9. The method of claim 8, further comprising: The overhead parameters are selected based on the phase tracking reference signal (PT-RS) density.

10. The method of claim 6, further comprising: The system receives a schedule for the communication from the base station, the schedule being based on the capability message.

11. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor, the at least one processor being coupled to the memory and configured to: When communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, the user equipment (UE) receives capability information indicating that the maximum modulation and decoding scheme (MCS) that the UE can support is 16-quadrature amplitude modulation (16-QAM). as well as When the communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, an MCS with a frequency less than or equal to the 16-QAM is used to communicate with the UE.

12. The apparatus of claim 11, wherein, The capability message also indicates the overhead parameters associated with the maximum MCS.

13. The apparatus of claim 12, wherein, The at least one processor and the memory are also configured to select the size of the transport block (TB) for communicating with the UE based on the overhead parameter, wherein the communication with the UE is based on the size of the TB.

14. The apparatus of claim 12, wherein, The at least one processor and the memory are further configured to send a phase tracking reference signal (PT-RS) to the UE, the overhead parameter being based on the PT-RS density.

15. The apparatus of claim 12, wherein, The at least one processor and the memory are further configured to send a schedule for the communication to the UE, the schedule being based on the received capability message.

16. A method for conducting wireless communication at a base station, comprising: When communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, the user equipment (UE) receives capability information indicating that the maximum modulation and decoding scheme (MCS) that the UE can support is 16-quadrature amplitude modulation (16-QAM). as well as When the communication is above 52.6 GHz and the subcarrier spacing selected for the communication is 120 kHz or lower, an MCS with a frequency less than or equal to the 16-QAM is used to communicate with the UE.

17. The method of claim 16, wherein, The capability message also indicates the overhead parameters associated with the maximum MCS.

18. The method of claim 17, further comprising selecting the size of a transport block (TB) for communicating with the UE based on the overhead parameter, wherein, Communication with the UE is based on the size of the TB.

19. The method of claim 17, further comprising transmitting a phase tracking reference signal (PT-RS) to the UE, the overhead parameter being based on the PT-RS density.

20. The method of claim 17, further comprising: A schedule for the communication is sent to the UE, the schedule being based on the received capability message.

21. An apparatus for wireless communication at a user equipment (UE), comprising components for performing a method of wireless communication according to any one of claims 6-10.

22. An apparatus for wireless communication at a base station, comprising components for performing a method of wireless communication according to any one of claims 16-20.

23. A computer-readable medium having computer instructions recorded thereon, which, when executed by a processor of a user equipment (UE), cause the processor to perform a wireless communication method according to any one of claims 6-10.

24. A computer-readable medium having computer instructions recorded thereon, which, when executed by a processor of a base station, cause the processor to perform a wireless communication method according to any one of claims 16-20.

25. A computer program product comprising computer instructions that, when executed by a processor of a user equipment (UE), cause the processor to perform a wireless communication method according to any one of claims 6-10.

26. A computer program product comprising computer instructions that, when executed by a processor of a base station, cause the processor to perform a wireless communication method according to any one of claims 16-20.

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