Orthogonal time-frequency spatial index modulation using selection of sub-blocks

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may transmit capability signaling indicating orthogonal time-frequency spatial index modulation (OTFS-IM) is supported by the UE. The UE may receive an indication of a sub-block size of a sub-block for the OTFS-IM and an indexed modulation mode associated with the sub-block based at least in part on the capability signaling. The UE may perform communications based at least in part on the indication of the sub-block size and the indexed modulation mode for the OTFS-IM. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Patent Application No. 18 / 166,289, filed on February 8, 2023, entitled “ORTHOGONAL TIME FREQUENCYSPACE INDEX MODULATION USING A SELECTION OF SUBBLOCKS,” and assigned to the assignee of the present application. The disclosure of the prior application is considered a part of and incorporated by reference into this patent application. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for Orthogonal Time-Frequency-Space Indexed Modulation (OTFS-IM) using selection of subblocks. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth or transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communication for wireless communication devices, such as user equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink and uplink communications. A "downlink" (or "DL") refers to the communication link from the network node to the UE, and an "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, regional, and / or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and better integrating with other open standards by using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink and CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink; as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] Some aspects described herein relate to an apparatus for wireless communication at a user equipment (UE). The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send capability signaling indicating that orthogonal time-frequency space index modulation (OTFS-IM) is supported by the UE. The one or more processors may be configured to receive an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling. The one or more processors may be configured to perform communication based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM.

[0008] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive capability signaling indicating that OTFS-IM is supported by a UE. The one or more processors may be configured to send an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling. The one or more processors may be configured to perform communication based at least in part on the indication of the subblock size and the index modulation mode associated with the OTFS-IM.

[0009] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include sending capability signaling indicating that OTFS-IM is supported by the UE. The method may include receiving an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling. The method may include performing communication based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM.

[0010] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include receiving capability signaling indicating that OTFS-IM is supported by a UE. The method may include sending an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling. The method may include performing communication based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM.

[0011] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to send capability signaling indicating that OTFS-IM is supported by the UE. The instruction set, when executed by the one or more processors of the UE, may cause the UE to receive, based at least in part on the capability signaling, an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock. The instruction set, when executed by the one or more processors of the UE, may cause the UE to perform communication based at least in part on the indication of the subblock size and index modulation mode used for the OTFS-IM.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: receive capability signaling indicating that OTFS-IM is supported by a UE. The set of instructions, when executed by the one or more processors of the network node, may cause the network node to send an indication of a sub-block size for a sub-block used for the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling. The set of instructions, when executed by the one or more processors of the network node, may cause the network node to perform communication based at least in part on the indication of the sub-block size and the index modulation mode used for the OTFS-IM.

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending capability signaling indicating that OTFS-IM is supported by the apparatus. The apparatus may include means for receiving, based at least in part on the capability signaling, an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock. The apparatus may include means for performing communication based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving capability signaling indicating that OTFS-IM is supported by a UE. The apparatus may include means for transmitting, based at least in part on the capability signaling, an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock. The apparatus may include means for performing communication based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM.

[0015] The various aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices, and / or processing systems as fully described herein with reference to the accompanying drawings and description, and as illustrated in the accompanying drawings and description.

[0016] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations of the claims.

[0017] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporated into the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and compositions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order that the above-mentioned features of the present disclosure may be fully understood, a more particular description of the invention briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are not therefore to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0022] Figure 4 is a diagram illustrating an example of an Orthogonal Time-Frequency-Space (OTFS) technique at a transmitter according to the present disclosure.

[0023] Figure 5 is a diagram illustrating an example of Orthogonal Frequency Division Multiplexing Index Modulation (OFDM-IM) according to the present disclosure.

[0024] Figure 6is a diagram illustrating an example of OTFS index modulation (OTFS-IM) according to the present disclosure.

[0025] Figures 7 to 11 is a diagram illustrating an example associated with OTFS-IM using selection of sub-blocks according to the present disclosure.

[0026] Figures 12 to 13 is a diagram illustrating an example process associated with OTFS-IM using selection of sub-blocks according to the present disclosure.

[0027] Figures 14 and 15 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0028] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of protection of the present disclosure will be fully conveyed to those skilled in the art. Those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using other structures, functionality, or structure and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of the present claims.

[0029] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] Although various aspects may be described herein using terminology generally associated with 5G or New Radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT, and / or post-5G (e.g., 6G) RATs.

[0031] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (illustrated as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (illustrated as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, meaning that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0032] In some examples, network node 110 is or includes a network node (such as an RU) that communicates with UE 120 via a radio access link. In some examples, network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, network node 110 (such as a converged network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. Network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, an RU, a CU, a mobility element of a network, a core network node, a network element, network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 using any suitable transport network via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks.

[0033] In some examples, network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​network node 110 and / or a network node subsystem serving that coverage area, depending on the context in which the term is used. Network node 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and / or another type of cell. A macrocell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 120 with service subscriptions. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions. A femtocell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 associated with the femtocell (e.g., UEs 120 in a closed subscriber group (CSG)). A network node 110 for a macrocell may be referred to as a macro network node. A network node 110 for a picocell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0034] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near-RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions, such as those described herein in conjunction with network node 110. In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0035] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110 d (e.g., a relay network node) may communicate with a network node 110 a (e.g., a macro network node) and a UE 120 d to facilitate communications between the network node 110 a and the UE 120 d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, or the like.

[0036] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, or relay network nodes. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0037] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

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

[0039] Some UEs 120 may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. The UE 120 may be included within a housing that houses components of the UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0040] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology or air interface, etc. A frequency may be referred to as a carrier or frequency channel, etc. Each frequency in a given geographic area may support a single RAT to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0041] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0042] Devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0043] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz to 24.25 GHz). The frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation to more than 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0044] With the above examples in mind, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a, FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0045] In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in greater detail elsewhere herein, the communication manager 140 may send capability signaling indicating that orthogonal time-frequency space index modulation (OTFS-IM) is supported by the UE; receive an indication of a subblock size for a subblock used for the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling; and perform communications based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0046] In some aspects, a network node (e.g., network node 110) may include a communication manager 150. As described in greater detail elsewhere herein, the communication manager 150 may receive capability signaling indicating that OTFS-IM is supported by the UE; send an indication of a sub-block size for a sub-block used for the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling; and perform communication based at least in part on the indication of the sub-block size and the index modulation mode used for the OTFS-IM. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0047] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0048] Figure 2 2 is a diagram illustrating example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ≥ 1). The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1). The network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 232. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include radio frequency components, such as one or more CUs or one or more DUs, that facilitate direct communication with the UE 120.

[0049] At network node 110, transmit processor 220 may receive data intended for UE 120 (or a group of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCS) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols for UE 120. Transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, as applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a through 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or frequency upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0050] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use the demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols, if applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine, among other things, a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter. In some examples, one or more components of the UE 120 may be included in a housing 284.

[0051] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0052] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, or be included within, one or more antenna panels, one or more antenna groups, one or more groups of antenna elements, and / or one or more antenna arrays, etc. An antenna panel, antenna group, group of antenna elements, and / or antenna array may include one or more antenna elements (within a single housing or multiple housings), a group of coplanar antenna elements, a group of non-coplanar antenna elements, and / or be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0053] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, if applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to execute the instructions herein (eg, reference Figures 7 to 15 ) any aspects of any of the methods described.

[0054] At network node 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., a demodulator component (shown as DEMOD) of modem 232), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller / processor 240. Network node 110 may include a communication unit 244 and may communicate with network controller 130 via communication unit 244. Network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, modem 232 of network node 110 may include a modulator and a demodulator. In some examples, network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute the instructions herein (e.g., reference 242). Figures 7 to 15 ) any aspects of any of the methods described.

[0055] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components of the may perform one or more techniques associated with using OTFS-IM for selection of sub-blocks, as described in more detail elsewhere herein. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the may perform or direct e.g. Figure 12 The process of 1200 Figure 13 1300 and / or other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of network node 110 and / or UE 120, may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 12 The process of 1200 Figure 13 The process 1300 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, among other things.

[0056] In some aspects, a UE (e.g., UE 120) includes means for transmitting capability signaling indicating that OTFS-IM is supported by the UE (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the modem 254, the antenna 252, or the memory 282, etc.); means for receiving an indication of a sub-block size for a sub-block used for OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling (e.g., using the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the controller / processor 280, or the memory 282, etc.); and / or means for receiving an indication of a sub-block size for a sub-block used for OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the indication of the sub-block size and index modulation mode for OTFS-IM (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the modem 254, the antenna 252, or the memory 282, etc.). 254, antenna 252, or memory 282, or the like, or means for performing communications using antenna 252, modem 254, MIMO detector 256, receive processor 258, controller / processor 280, or memory 282. Means for the UE to perform the operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0057] In some aspects, a network node (e.g., network node 110) includes means for receiving capability signaling indicating that OTFS-IM is supported by the UE (e.g., using antenna 234, modem 232, MIMO detector 236, receive processor 238, controller / processor 240, or memory 242, etc.); means for sending an indication of a sub-block size for a sub-block used for OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling (using controller / processor 240, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, or memory 242, etc.); and / or means for transmitting an indication of a sub-block size and an index modulation mode associated with the sub-block based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM (e.g., using antenna 234, modem 232, MIMO detector 236, receive processor 238, controller / processor 240, or memory 242, etc., or using controller / processor 240, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, or memory 242, etc.). 230, modem 232, antenna 234, or memory 242) to perform communications. Means for the network node to perform operations described herein may include, for example, one or more of the following: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0058] Although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0059] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0060] The deployment of a communication system such as a 5G NR system can be arranged in a variety of ways with various components or constituent parts. In a 5G NR system or network, a network node, a network entity, a mobility element of the network, a RAN node, a core network node, a network element, a base station or network equipment may be implemented in an aggregated architecture or a decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality may be implemented as an aggregated base station (also known as an independent base station or a monolithic base station) or a decomposed base station. A “network entity” or a “network node” may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs or a combination thereof).

[0061] A converged base station (e.g., a converged network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually spread across one or more other network nodes. The DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), among others.

[0062] Base station type operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate scaling of the communication system by separating base station functionality into one or more units that can be deployed separately. A disaggregated base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Various units of the disaggregated base station may be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

[0063] Figure 3FIG2 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0064] Each of the units (including the CU 310, DU 330, RU 340) and the near-RT RIC 325, the non-RT RIC 315, and the SMO framework 305 may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit, may be configured to communicate with one or more of the other units via the transmission medium. In some examples, each of the units may include a wired interface configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, and a wireless interface that may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) configured to receive signals or transmit signals to one or more of the other units via a wireless transmission medium, or both.

[0065] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, among others. Each control function may be implemented using an interface configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0066] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more higher physical (PHY) layers, at least in part according to a functional split (such as that defined by 3GPP). In some aspects, the one or more higher PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like. In some aspects, the DU 330 may also host one or more lower PHY layers, such as those implemented by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, or physical random access channel (PRACH) extraction and filtering. Each layer (which may also be referred to as a module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0067] Each RU 340 may implement low-layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions based on functional split (e.g., functional split defined by 3GPP) (such as low-layer functional split), such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0068] The SMO framework 305 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 305 can be configured to interact with a cloud computing platform (such as the Open Cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements can include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some implementations, the SMO framework 305 can communicate with hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0069] The non-RT RIC 315 can be configured to include logic that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 can be coupled to or in communication with the near-RT RIC 325 (e.g., via an A1 interface). The near-RT RIC 325 can be configured to include logic that enables near-real-time control and optimization of RAN elements and resources through data collection and actions over an interface (e.g., via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0070] In some implementations, the non-RT RIC 315 can receive parameters or external enrichment information from an external server to generate an AI / ML model to be deployed in the near-RT RIC 325. Such information can be utilized by the near-RT RIC 325 and can be received from non-network data sources or from network functions at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 can be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 can monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or through the creation of RAN management policies (such as A1 interface policies).

[0071] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0072] OTFS is a two-dimensional (2D) modulation technique that transforms information carried in a delay-Doppler coordinate system. Information in the delay-Doppler coordinate system can be transformed into the time-frequency domain, as utilized by traditional modulation schemes such as time division multiple access (TDMA), code division multiple access (CDMA), and orthogonal frequency division multiplexing (OFDM). OTFS is a waveform designed to handle high-Doppler channels by transmitting in the delay-Doppler domain. In OTFS, 2D discrete Fourier transform (DFT) (2D-DFT) precoding can be applied to information symbols in the delay-Doppler domain, where these information symbols can later be mapped to the time-frequency domain.

[0073] The Index Modulation (IM) scheme for OFDM (OFDM-IM) can be used to improve OFDM performance. In OFDM-IM, subcarriers can be split into subblocks, and IM can be implemented for each subblock. Similarly, IM can be used to improve the performance of OTFS. In OTFS-IM, the delay-Doppler grid can be split into subblocks, and IM can be implemented for each subblock.

[0074] Figure 4 is a diagram illustrating an example 400 of an OTFS technique at a transmitter according to the present disclosure.

[0075] like Figure 4 As shown, in an OTFS waveform at the transmitter, a delay-Doppler information symbol can be represented by M×LQ-QAMMLlog2Q bits, where M is associated with the delay domain and L is associated with the Doppler domain. The delay-Doppler information symbol can be converted to the time-frequency domain using a 2D-DFT, which may involve applying an inverse DFT (IDFT) L and applying a DFTM to the delay-Doppler information symbol. Converting the delay-Doppler information symbol to the time-frequency domain using a 2D-DFT may result in a time-frequency domain signal. The time domain may be associated with L symbols, while the frequency domain may be associated with M subcarriers. The symbols at the output of the D2-DFT transform may represent the time-frequency domain. An inverse fast Fourier transform (IFFT) (e.g., IFFTN) may be applied to the time-frequency domain signal, which may result in a time-domain signal. In other words, an IFFT may be applied to obtain a time-domain signal.

[0076] The time-domain signal may be associated with L symbols, with N samples per symbol, where L may depend on the geometric coherence time and the delay. The geometric coherence time is the duration during which scattering and Doppler shift remain constant. The geometric coherence time may depend on velocity, angle of arrival (AoA), and / or angle of departure (AoD). For example, in the case of slot-based OTFS transmission, L may be selected as 14.

[0077] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0078] In OTFS, the input signal can be associated with the delay-Doppler domain. The output signal can be based at least in part on the input signal and the channel. When the channel is a delay-Doppler channel, the OTFS input-output relationship can be a 2D warped convolution with a varying phase shift. Due to its low-spread nature, the channel may only occupy a small portion of the delay-Doppler grid (near the origin).

[0079] Figure 5 is a diagram illustrating an example 500 of OFDM-IM according to the present disclosure.

[0080] As Figure 5 shown, in OFDM-IM, subcarriers can be split into OFDM sub-blocks at the transmitter (e.g., using OFDM-IM sub-block creator 1 to OFDM-IM sub-block creator G, where OFDM-IM sub-block creator 1 can be at least partially based on index selection and M-array modulation). Index selection can determine the non-zero positioning in the OFDM sub-block. In each OFDM sub-block, k out of L subcarriers (k < L) are mapped by the constellation alphabet M, while the other (L - k) subcarriers remain empty. Additionally, bits, p2 = klog2M bits and bits / subcarrier, where k and L can be selected to maximize the spectral efficiency (SE) and energy efficiency.

[0081] As indicated above, Figure 5 is provided as an example. Other examples may be different from the example described with respect to Figure 5 which.

[0082] Figure 6 is a diagram illustrating Example 600 of OTFS-IM according to the present disclosure.

[0083] As Figure 6 shown, in OTFS-IM, delay-Doppler domain resources can be randomly split into sub-blocks at the transmitter (e.g., using an OTFS block creator, which can occur after bit splitting, index selection, and M-array mapper). In each sub-block, k out of L resources (k < L) are mapped by the constellation alphabet M, where bits / resource, and k and L can be selected to maximize the spectral efficiency and energy efficiency.

[0084] After the OTFS block creator can be an inverse symplectic FFT (ISFFT) and Heisenberg transform, cyclic prefix (CP) addition, parallel-to-serial (PS) conversion, and digital-to-analog (D / A) conversion. The transmitter can send the resulting signal over the channel, where the signal can be received by the receiver. The receiver can perform analog-to-digital (A / D) conversion, CP removal, serial-to-parallel (SP) conversion, symplectic FFT (SFFT) and Wigner transform, and detection. The receiver can also perform index demapping and M-array demapping to obtain the received bits.

[0085] As indicated above, Figure 6 is provided as an example. Other examples may be different from the example described with respect to Figure 6 which.

[0086] In OTFS-IM, the delay-Doppler grid can be split into sub-blocks, but the sub-block selection can be considered random and does not follow a specific design, and thus does not provide other benefits. In other words, randomly splitting the delay-Doppler grid into sub-blocks does not provide other advantages, such as improved peak-to-average power ratio (PAPR). Past solutions have not included splitting the delay-Doppler grid using a specific scheme that provides other benefits (such as improved PAPR).

[0087] In various aspects of the techniques and apparatus described herein, a UE may send capability signaling to a network node indicating that OTFS-IM is supported by the UE. The capability signaling may also indicate a maximum subblock size supported by the UE. The UE may receive, from the network node and based at least in part on the capability signaling, an indication of a subblock size for a subblock used for OTFS-IM and an index modulation mode associated with the subblock. The subblock size and the index modulation mode may be based at least in part on PAPR requirements and / or data requirements. The subblock may be associated with a delay dimension and a Doppler dimension. The index modulation mode may indicate a non-zero pattern (e.g., a pattern of ones and zeros) associated with the subblock. The UE may perform communications with the network node based at least in part on the indication of the subblock size and index modulation mode used for OTFS-IM. When performing the communications, the UE may receive an OTFS-IM waveform based at least in part on the indication of the subblock size and index modulation mode used for OTFS-IM, wherein the OTFS-IM may be detectable by the UE based at least in part on the indication of the subblock size and index modulation mode used for OTFS-IM. The UE, when performing communications, may transmit an OTFS-IM waveform based at least in part on the indication of the sub-block size and index modulation mode used for the OTFS-IM.

[0088] In some aspects, to improve the performance of OTFS-IM, subblocks in the delay-Doppler domain may be selected in a specific manner that yields other benefits, such as improved PAPR. The network node may select subblocks in the delay-Doppler domain (e.g., subblock size and index modulation mode) and may indicate the subblocks in the delay-Doppler domain to the UE. The UE may use such subblocks in the delay-Doppler domain, thereby benefiting from the improved PAPR. In other words, instead of using randomly selected subblocks that do not provide any benefit in terms of PAPR, the UE may use subblocks specifically selected by the network node to improve PAPR.

[0089] Figure 7 is a diagram illustrating an example 700 associated with OTFS-IM using selection of sub-blocks. Figure 7As shown, example 700 includes communications between a UE (e.g., UE 120) and a network node (e.g., network node 110). In some aspects, the UE and the network node may be included in a wireless network (such as wireless network 100).

[0090] As shown by reference numeral 702, the UE may send capability signaling to the network node indicating that OTFS-IM is supported by the UE. The capability signaling may indicate the maximum sub-block size supported by the UE. In other words, the UE may indicate its capabilities for OTFS-IM and the maximum sub-block size that can be detected by the UE in OTFS-IM. The maximum sub-block size supported by the UE may be based at least in part on the processing capabilities of the UE.

[0091] As indicated by reference numeral 704, a UE may receive, from a network node and based at least in part on capability signaling, an indication of a subblock size for a subblock used for OTFS-IM and an index modulation mode associated with the subblock. The subblock size may be based at least in part on a PAPR requirement and / or a data requirement, which may be specific to the UE and / or the network node. The network node may select the subblock size and index modulation mode for OTFS-IM based at least in part on the PAPR requirement and the data requirement, and the network node may indicate the subblock size and index modulation mode to the UE. The data requirement may be based at least in part on spectral efficiency and / or energy efficiency. The index modulation mode may also be based at least in part on the PAPR requirement and / or the data requirement. The subblock may be associated with a delay dimension and a Doppler dimension. The index modulation mode may indicate a non-zero pattern associated with the subblock. In other words, the index modulation mode may indicate the number of zeros and / or the number of non-zeros associated with the subblock.

[0092] In some aspects, the subblock size may be based at least in part on the modulation order. In other words, subblock selection may be a function of the modulation order, which may affect the PAPR. For example, a lower modulation order may be associated with a smaller subblock size, and a higher modulation order may be associated with a larger subblock size.

[0093] In some aspects, subblocks may be selected based at least in part on the Doppler dimension, where multiple Doppler resources corresponding to delays may be selected as subblocks, and a certain number of resources in the subblock may be selected as non-zero, while the remaining resources in the subblock may be selected as zero. In some aspects, the network node may select subblocks based at least in part on the Doppler dimension. Multiple Doppler resources corresponding to delays (e.g., all Doppler resources corresponding to each delay) (where the subblock size is L) may be selected as subblocks. In each subblock, only k resources may be selected as non-zero, and the remaining (Lk) resources may remain empty. In some aspects, selecting subblocks based at least in part on the Doppler dimension may improve the PAPR of the OTFS-IM waveform. The PAPR of OTFS may depend on the FFT in the Doppler dimension, and the (Lk) zeros in the Doppler dimension may help reduce the PAPR. Furthermore, the zeros in the Doppler domain may reduce Doppler domain interference. Furthermore, uniform power distribution can be provided in the delay domain (eg, the power in each delay dimension can be the same), which can facilitate delay-time-based equalizers for OTFS.

[0094] In some aspects, one of the plurality of Doppler resources corresponding to the delay may be selected as non-zero. The network node may select one of the L Doppler resources for each delay as non-zero (e.g., only one of the L Doppler resources for each delay may be selected as non-zero), which may result in bits / resource. For example, the first resource of the L Doppler resources for each delay can be selected to be non-zero, while the remaining resources of the L Doppler resources for each delay can be zero. Since one resource of the L Doppler resources for each delay can be non-zero, each delayed symbol after the IDFT can contain uniform power over time, which can result in the same PAPR for OTFS as in the DFT-s-OFDM waveform.

[0095] In some aspects, a subblock may be selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, wherein a certain number of resources in the subblock may be selected as non-zero and the remaining resources in the subblock may be selected as zero. In some aspects, the network node may select Doppler resources corresponding to a plurality of delays (e.g., all Doppler resources corresponding to a plurality of delays) as a subblock. In this case, the subblock may have a subblock size mL, where m is the number of delays in each subblock. For example, Doppler resources corresponding to two delays (m=2) may be selected as a subblock. In each subblock, only k resources may be selected as non-zero and the remaining (Lk) resources may remain empty. In some aspects, selecting Doppler resources corresponding to multiple delays as subblocks may result in higher spectral efficiency for indexed modulation because more resources may be selected as subblocks with a PAPR tradeoff. However, the PAPR may still be better compared to a random selection of subblocks. The resulting spectral efficiency may be given by Bits / resource representation.

[0096] In some aspects, a sub-block may be selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, wherein a certain number of resources in the sub-block may be selected as non-zero and the remaining resources in the sub-block may be selected as zero. The network node may select the delay resources corresponding to the plurality of Doppler resources (e.g., all delay resources corresponding to the plurality of Doppler resources) as a sub-block. In this case, the sub-block may have a sub-block size lM, where l is the number of Doppler resources in each sub-block. For example, delay resources corresponding to two Doppler resources (l=2) may be selected as a sub-block. In each sub-block, only k resources may be selected as non-zero and the remaining (Lk) resources may remain empty. In some aspects, selecting delay resources corresponding to the plurality of Doppler resources as sub-blocks may result in higher spectral efficiency for index modulation because more resources may be selected as sub-blocks with a PAPR tradeoff. The resulting spectral efficiency may be given by Bits / resource representation.

[0097] In some aspects, the number of non-zero resources in each subblock may vary (e.g., k may vary for each subblock). The number of non-zero resources may vary across different subblocks. In multiple subblocks, the number of non-zero resources may be different between the subblocks in the multiple subblocks. For example, a first subblock may have 10 non-zero resources, while a second subblock may have 8 non-zero resources. Alternatively, the number of non-zero resources in each subblock may be the same. In multiple subblocks, the number of non-zero resources may be the same between the subblocks in the multiple subblocks. In some aspects, the zero resources in a subblock may be replaced with a non-zero constellation, where the non-zero constellation may be different from the constellation used for the non-zero resources in the subblock. The zero resources in each subblock may be replaced with a non-zero constellation, but the non-zero constellation may need to be different from the constellation used for the non-zero resources (e.g., k resources). "Zero resources" refers to resources associated with the value "0", rather than referring to "no resources". In some aspects, index modulation can be performed on the in-phase component and the quadrature (I / Q) component, wherein in each sub-block, a fraction of the I / Q portion of the resource can be selected to be modulated separately using pulse amplitude modulation (PAM). The index modulation can be applied separately to the real portion of the resource and to the imaginary portion of the resource, wherein the real portion can correspond to the in-phase component and the imaginary portion can correspond to the quadrature component, and wherein different constellations can be used to select the real and imaginary portions.

[0098] As indicated by reference numeral 706, the UE may perform communications to the network node based at least in part on an indication of a subblock size and index modulation mode to use for OTFS-IM. In some aspects, the UE may receive an OTFS-IM waveform from the network node in a downlink direction based at least in part on the indication of the subblock size and index modulation mode to use for OTFS-IM. The UE may be capable of detecting OTFS-IM based at least in part on the indication of the subblock size and index modulation mode to use for OTFS-IM. In some aspects, the UE may transmit an OTFS-IM waveform to the network node in an uplink direction based at least in part on the indication of the subblock size and index modulation mode to use for OTFS-IM. The UE may be capable of transmitting the OTFS-IM waveform based at least in part on the indication of the subblock size and index modulation mode to use for OTFS-IM.

[0099] In some aspects, the subblock size may be a data subblock size (a subblock size for data), and the index modulation mode may be a data-indexed modulation mode (an index modulation mode for data). The network node may send a reference signal to the UE, which may indicate the subblock size and the index modulation mode. In other words, the indication of the subblock size and the index modulation mode may be conveyed via the reference signal. The reference signal may be based at least in part on a reference signal subblock size (a subblock size for the reference signal) and a reference signal indexed modulation mode (an index modulation mode for the reference signal), which may be different from the data subblock size and the data-indexed modulation mode. In other words, the reference signal and the data may be associated with different subblock sizes and different indexed modulation modes. The indication of the reference signal subblock size and the reference signal indexed modulation mode may be stored by the UE and used by the UE to detect the reference signal. The reference signal used to transmit the indication of the data subblock size and the data-indexed modulation mode may itself be indexed modulated, where the reference signal subblock size for the reference signal may be fixed and known to the UE. Therefore, the UE may be able to detect the reference signal and then be able to determine the data subblock size and the data index modulation mode according to the detected reference signal.

[0100] As indicated above, Figure 7 are provided as examples. Other examples can be found in the Figure 7 The examples described are different.

[0101] Figure 8 is a diagram illustrating an example 800 associated with OTFS-IM using selection of sub-blocks.

[0102] like Figure 8 As shown, a sub-block may be selected based at least in part on the Doppler dimension. A plurality of Doppler resources corresponding to delays (e.g., all Doppler resources corresponding to each delay) (where the sub-block size is L) may be selected as a sub-block. In each sub-block, only k resources may be selected as non-zero, and the remaining (Lk) resources may remain empty.

[0103] As indicated above, Figure 8 are provided as examples. Other examples can be found in the Figure 8 The examples described are different.

[0104] Figure 9 is a diagram illustrating an example 900 associated with OTFS-IM using selection of sub-blocks.

[0105] like Figure 9As shown, one of the L Doppler resources for each delay may be selected as non-zero (e.g., only one of the L Doppler resources for each delay may be selected as non-zero), which may result in bits / resource. For example, the first resource of the L Doppler resources for each delay can be selected to be non-zero, while the remaining resources of the L Doppler resources for each delay can be zero. Since one resource of the L Doppler resources for each delay can be non-zero, each delayed symbol after the IDFT can contain uniform power over time, which can result in the same PAPR for OTFS as in the DFT-s-OFDM waveform.

[0106] As indicated above, Figure 9 are provided as examples. Other examples can be found in the Figure 9 The examples described are different.

[0107] Figure 10 is a diagram illustrating an example 1000 associated with OTFS-IM using selection of sub-blocks.

[0108] like Figure 10 As shown, Doppler resources corresponding to multiple delays (e.g., all Doppler resources corresponding to multiple delays) can be selected as sub-blocks. In this case, the sub-blocks can have a sub-block size mL, where m is the number of delays in each sub-block. For example, Doppler resources corresponding to two delays (m=2) can be selected as sub-blocks. In each sub-block, only k resources can be selected as non-zero, and the remaining (Lk) resources can remain empty.

[0109] As indicated above, Figure 10 are provided as examples. Other examples can be found in the Figure 10 The examples described are different.

[0110] Figure 11 is a diagram illustrating an example 1100 associated with OTFS-IM using selection of sub-blocks.

[0111] like Figure 11 As shown, delay resources corresponding to multiple Doppler resources (e.g., all delay resources corresponding to multiple Doppler resources) can be selected as sub-blocks. In this case, the sub-blocks can have a sub-block size of lM, where l is the number of Doppler resources in each sub-block. For example, delay resources corresponding to two Doppler resources (l=2) can be selected as sub-blocks. In each sub-block, only k resources can be selected as non-zero, and the remaining (Lk) resources can remain empty.

[0112] As indicated above, Figure 11 are provided as examples. Other examples can be found in the Figure 11The examples described are different.

[0113] Figure 12 is a diagram illustrating an example process 1200, performed, for example, by a UE, according to the present disclosure. Example process 1200 is an example in which a UE (eg, UE 120) performs operations associated with OTFS-IM using selection of sub-blocks.

[0114] like Figure 12 As shown, in some aspects, process 1200 may include sending capability signaling indicating that OTFS-IM is supported by the UE (block 1210). For example, the UE (e.g., using Figure 14 The depicted transmitting component 1404 and / or communication manager 1406) may transmit capability signaling indicating that OTFS-IM is supported by the UE, as described above, for example with reference to Figures 7 to 11 described.

[0115] like Figure 12 As further shown, in some aspects, process 1200 may include receiving an indication of a subblock size for a subblock of the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling (block 1220). Figure 14 The depicted receiving component 1402 and / or communication manager 1406) can receive an indication of a sub-block size for the sub-block of the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling, as described above, for example, with reference to Figures 7 to 11 described.

[0116] like Figure 12 As further shown, in some aspects, process 1200 may include performing communication based at least in part on the indication of the sub-block size and the index modulation mode for the OTFS-IM (block 1230). Figure 14 The depicted communication manager 1406) may perform communications based at least in part on an indication of the sub-block size and the index modulation mode for the OTFS-IM, as described above, for example, with reference to Figures 7 to 11 described.

[0117] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0118] In a first aspect, process 1200 includes receiving an OTFS-IM waveform based at least in part on the indication of the subblock size and the index modulation mode for OTFS-IM, the OTFS-IM detectable by the UE based at least in part on the indication of the subblock size and the index modulation mode for OTFS-IM.

[0119] In a second aspect, alone or in combination with the first aspect, process 1200 includes transmitting an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

[0120] In a third aspect, alone or in combination with one or more of the first and second aspects, the subblock size and the index modulation mode are based at least in part on one or more of: a PAPR requirement or a data requirement.

[0121] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the sub-block is associated with a delay dimension and a Doppler dimension, and the index modulation pattern indicates a non-zero pattern associated with the sub-block.

[0122] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the capability signaling indicates a maximum sub-block size supported by the UE.

[0123] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the sub-block size is based at least in part on a modulation order.

[0124] In a seventh aspect, alone or in combination with one or more of aspects 1 to 6, the subblock size is a data subblock size, and the index modulation mode is a data index modulation mode, wherein the indication of the subblock size and the index modulation mode is received via a reference signal, wherein the reference signal is at least partially based on a reference signal subblock size and a reference signal index modulation mode, and wherein the indication of the reference signal subblock size and the reference signal index modulation mode is stored by the UE and used to detect the reference signal.

[0125] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the sub-block is selected at least in part based on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, and a certain number of resources in the sub-block are selected to be non-zero, while the remaining resources in the sub-block are selected to be zero.

[0126] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, a Doppler resource of the plurality of Doppler resources corresponding to the delay is selected to be non-zero.

[0127] In a tenth aspect, alone or in combination with one or more of aspects 1 to 9, the sub-block is selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, and a certain number of resources in the sub-block are selected to be non-zero, while the remaining resources in the sub-block are selected to be zero.

[0128] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the sub-block is selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, and a certain number of resources in the sub-block are selected to be non-zero, while the remaining resources in the sub-block are selected to be zero.

[0129] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the number of non-zero resources varies across different sub-blocks.

[0130] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the zero resources in the sub-block can be replaced with a non-zero constellation, wherein the non-zero constellation is different from the constellation used for the non-zero resources in the sub-block.

[0131] although Figure 12 Example blocks of process 1200 are shown, but in some aspects, process 1200 may include Figure 12 The blocks depicted may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 1200 may be performed in parallel.

[0132] Figure 13 is a diagram illustrating an example process 1300, for example, performed by a network node, in accordance with the present disclosure. The example process 1300 is an example in which the network node (eg, network node 110) performs operations associated with OTFS-IM using selection of sub-blocks.

[0133] like Figure 13 As shown, in some aspects, process 1300 may include receiving capability signaling indicating that OTFS-IM is supported by the UE (block 1310). For example, the network node (e.g., using Figure 15 The depicted receiving component 1502 and / or communication manager 1506) can receive capability signaling indicating that OTFS-IM is supported by the UE, as described above, for example with reference to Figures 7 to 11 described.

[0134] like Figure 13As further shown, in some aspects, process 1300 may include sending an indication of a sub-block size for the OTFS-IM sub-block and an index modulation mode associated with the sub-block based at least in part on the capability signaling (block 1320). Figure 15 The depicted transmitting component 1504 and / or communication manager 1506) may transmit an indication of a sub-block size for the sub-block of the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling, as described above, for example, with reference to Figures 7 to 11 described.

[0135] like Figure 13 As further shown, in some aspects, process 1300 may include performing communication based at least in part on the indication of the sub-block size and the index modulation mode for the OTFS-IM (block 1330). Figure 15 The depicted communication manager 1506) may perform communications based at least in part on an indication of the sub-block size and the index modulation mode for the OTFS-IM, as described above, for example, with reference to Figures 7 to 11 described.

[0136] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0137] In a first aspect, process 1300 transmits an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

[0138] In a second aspect, alone or in combination with the first aspect, process 1300 includes receiving an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

[0139] In a third aspect, alone or in combination with one or more of the first and second aspects, the subblock size and the index modulation mode are based at least in part on one or more of: a PAPR requirement or a data requirement.

[0140] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the sub-block is associated with a delay dimension and a Doppler dimension, and the index modulation pattern indicates a non-zero pattern associated with the sub-block.

[0141] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the capability signaling indicates a maximum sub-block size supported by the UE.

[0142] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the sub-block size is based at least in part on a modulation order.

[0143] In a seventh aspect, alone or in combination with one or more of aspects 1 to 6, the subblock size is a data subblock size, and the index modulation mode is a data index modulation mode, wherein the indication of the subblock size and the index modulation mode is sent via a reference signal, and the reference signal is at least partially based on a reference signal subblock size and a reference signal index modulation mode.

[0144] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the sub-block is selected at least in part based on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, and a certain number of resources in the sub-block are selected to be non-zero, while the remaining resources in the sub-block are selected to be zero.

[0145] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, a Doppler resource of the plurality of Doppler resources corresponding to the delay is selected to be non-zero.

[0146] In a tenth aspect, alone or in combination with one or more of aspects 1 to 9, the sub-block is selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, and a certain number of resources in the sub-block are selected to be non-zero, while the remaining resources in the sub-block are selected to be zero.

[0147] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the sub-block is selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, and a certain number of resources in the sub-block are selected to be non-zero, while the remaining resources in the sub-block are selected to be zero.

[0148] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the number of non-zero resources varies across different sub-blocks.

[0149] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the zero resources in the sub-block can be replaced with a non-zero constellation, wherein the non-zero constellation is different from the constellation used for the non-zero resources in the sub-block.

[0150] although Figure 13 Example blocks of process 1300 are shown, but in some aspects, process 1300 may include Figure 13The blocks depicted may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 1300 may be performed in parallel.

[0151] Figure 14 1 is a diagram of an example apparatus 1400 for wireless communication according to the present disclosure. Apparatus 1400 may be a UE, or a UE may include apparatus 1400. In some aspects, apparatus 1400 includes a receiving component 1402, a sending component 1404, and / or a communication manager 1406, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1406 is a communication manager that is configured to communicate with one another. Figure 1 The communication manager 140 is depicted. As shown, the device 1400 can utilize a receiving component 1402 and a sending component 1404 to communicate with another device 1408, such as a UE or a network node such as a CU, DU, RU, or base station.

[0152] In some aspects, the apparatus 1400 may be configured to perform Figures 7 to 11 Additionally or alternatively, the apparatus 1400 may be configured to perform one or more of the processes described herein, such as Figure 12 The process 1200. In some aspects, Figure 14 The device 1400 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, one or more components of the UE described. Figure 14 One or more of the components shown may be combined Figure 2 Additionally or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0153] The receiving component 1402 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1408. The receiving component 1402 may provide the received communications to one or more other components of the device 1400. In some aspects, the receiving component 1402 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1400. In some aspects, the receiving component 1402 may include in conjunction with Figure 2One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0154] The transmitting component 1404 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1408. In some aspects, one or more other components of the apparatus 1400 may generate communications and may provide the generated communications to the transmitting component 1404 for transmission to the apparatus 1408. In some aspects, the transmitting component 1404 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the apparatus 1408. In some aspects, the transmitting component 1404 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1404 can be co-located with the receive component 1402 in a transceiver.

[0155] The communications manager 1406 can support the operation of the receiving component 1402 and / or the sending component 1404. For example, the communications manager 1406 can receive information associated with configuring the receipt of communications by the receiving component 1402 and / or the sending of communications by the sending component 1404. Additionally or alternatively, the communications manager 1406 can generate and / or provide control information to the receiving component 1402 and / or the sending component 1404 to control the receipt and / or sending of communications.

[0156] Transmitting component 1404 may transmit capability signaling indicating that OTFS-IM is supported by the UE. Receiving component 1402 may receive, based at least in part on the capability signaling, an indication of a sub-block size for a sub-block used for OTFS-IM and an index modulation mode associated with the sub-block. Communication manager 1406 may perform communication based at least in part on the indication of the sub-block size and index modulation mode used for OTFS-IM.

[0157] Figure 14 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 14 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 14 Two or more components shown may be implemented in a single component, or Figure 14 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 14 The illustrated set of components (one or more) may be described as being executable by Figure 14Another group of components is shown performing one or more functions.

[0158] Figure 15 1 is a diagram of an example apparatus 1500 for wireless communication according to the present disclosure. Apparatus 1500 may be a network node, or a network node may include apparatus 1500. In some aspects, apparatus 1500 includes a receiving component 1502, a sending component 1504, and / or a communication manager 1506, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1506 is a communication manager that is configured to communicate with one another. Figure 1 The communication manager 150 is depicted. As shown, the apparatus 1500 can communicate with another apparatus 1508, such as a UE or a network node, such as a CU, DU, RU, or base station, using a receiving component 1502 and a sending component 1504.

[0159] In some aspects, the apparatus 1500 may be configured to perform Figures 7 to 11 Additionally or alternatively, the apparatus 1500 may be configured to perform one or more of the processes described herein, such as Figure 13 The process 1300. In some aspects, Figure 15 The illustrated apparatus 1500 and / or one or more components may include a combination of Figure 2 Additionally or alternatively, one or more components of the described network node. Figure 15 One or more of the components shown may be combined Figure 2 Additionally or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0160] Receive component 1502 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from device 1508. Receive component 1502 may provide the received communications to one or more other components of device 1500. In some aspects, receive component 1502 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of device 1500. In some aspects, receive component 1502 may include processing the received communications in conjunction with one or more other components of device 1500. Figure 2One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the receiving component 1502 and / or the transmitting component 1504 may include or be included in a network interface. The network interface may be configured to obtain and / or output signals for the device 1500 via one or more communication links (such as a backhaul link, a midhaul link, and / or a fronthaul link).

[0161] The transmitting component 1504 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1508. In some aspects, one or more other components of the apparatus 1500 may generate communications and may provide the generated communications to the transmitting component 1504 for transmission to the apparatus 1508. In some aspects, the transmitting component 1504 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the apparatus 1508. In some aspects, the transmitting component 1504 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof, of the described network nodes. In some aspects, the transmit component 1504 can be co-located with the receive component 1502 in a transceiver.

[0162] The communications manager 1506 can support the operation of the receiving component 1502 and / or the sending component 1504. For example, the communications manager 1506 can receive information associated with configuring the receipt of communications by the receiving component 1502 and / or the sending of communications by the sending component 1504. Additionally or alternatively, the communications manager 1506 can generate and / or provide control information to the receiving component 1502 and / or the sending component 1504 to control the receipt and / or sending of communications.

[0163] Receiving component 1502 may receive capability signaling indicating that OTFS-IM is supported by the UE. Sending component 1504 may transmit an indication of a sub-block size for a sub-block used for OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling. Communication manager 1506 may perform communication based at least in part on the indication of the sub-block size and index modulation mode used for OTFS-IM.

[0164] Figure 15 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 15 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 15Two or more components shown may be implemented in a single component, or Figure 15 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 15 The illustrated set of components (one or more) may be described as being executable by Figure 15 Another group of components is shown performing one or more functions.

[0165] The following provides an overview of some aspects of the disclosure:

[0166] Aspect 1: A method of wireless communication performed by a user equipment (UE), the method comprising: sending capability signaling indicating that orthogonal time-frequency space index modulation (OTFS-IM) is supported by the UE; receiving an indication of a subblock size of a subblock used for the OTFS-IM and an index modulation mode associated with the subblock based at least in part on the capability signaling; and performing communication based at least in part on the indication of the subblock size and the index modulation mode used for the OTFS-IM.

[0167] Aspect 2: The method of aspect 1, wherein performing the communication further comprises: receiving an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode used for OTFS-IM, the OTFS-IM being detectable by the UE based at least in part on the indication of the sub-block size and the index modulation mode used for OTFS-IM.

[0168] Aspect 3: The method of any one of aspects 1 to 2, wherein performing the communication further comprises: transmitting an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

[0169] Aspect 4: The method according to any one of aspects 1 to 3, wherein the sub-block size and the index modulation mode are based at least in part on one or more of the following: peak-to-average power ratio (PAPR) requirements or data requirements.

[0170] Aspect 5: The method according to any one of aspects 1 to 4, wherein the sub-block is associated with a delay dimension and a Doppler dimension, and wherein the index modulation pattern indicates a non-zero pattern associated with the sub-block.

[0171] Aspect 6: The method according to any one of aspects 1 to 5, wherein the capability signaling indicates a maximum sub-block size supported by the UE.

[0172] Aspect 7: The method according to any one of aspects 1 to 6, wherein the sub-block size is based at least in part on a modulation order.

[0173] Aspect 8: A method according to any one of Aspects 1 to 7, wherein the subblock size is a data subblock size and the index modulation mode is a data index modulation mode, wherein the indication of the subblock size and the index modulation mode is received via a reference signal, wherein the reference signal is at least partially based on a reference signal subblock size and a reference signal index modulation mode, and wherein the indication of the reference signal subblock size and the reference signal index modulation mode is stored by the UE and used to detect the reference signal.

[0174] Aspect 9: A method according to any one of Aspects 1 to 8, wherein the sub-block is selected at least in part based on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, and wherein a certain number of resources in the sub-block are selected as non-zero, and the remaining resources in the sub-block are selected as zero.

[0175] Aspect 10: The method according to aspect 9, wherein one Doppler resource of the plurality of Doppler resources corresponding to the delay is selected to be non-zero.

[0176] Aspect 11: A method according to any one of Aspects 1 to 10, wherein the sub-block is selected at least in part based on a plurality of Doppler resources corresponding to a plurality of delays, and wherein a certain number of resources in the sub-block are selected as non-zero and the remaining resources in the sub-block are selected as zero.

[0177] Aspect 12: A method according to any one of Aspects 1 to 11, wherein the sub-block is selected at least in part based on a plurality of delay resources corresponding to a plurality of Doppler resources, and wherein a certain number of resources in the sub-block are selected as non-zero and the remaining resources in the sub-block are selected as zero.

[0178] Aspect 13: The method according to any one of aspects 1 to 12, wherein the number of non-zero resources varies across different sub-blocks.

[0179] Aspect 14: The method according to any one of aspects 1 to 13, wherein the zero resources in the sub-block can be replaced with a non-zero constellation, wherein the non-zero constellation is different from the constellation used for the non-zero resources in the sub-block.

[0180] Aspect 15: A method of wireless communication performed by a network node, the method comprising: receiving capability signaling indicating that orthogonal time-frequency space index modulation (OTFS-IM) is supported by a user equipment (UE); sending an indication of a sub-block size of a sub-block used for the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling; and performing communication based at least in part on the indication of the sub-block size and the index modulation mode used for the OTFS-IM.

[0181] Aspect 16: The method of aspect 15, wherein performing the communicating further comprises transmitting an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

[0182] Aspect 17: The method of any one of aspects 15 to 16, wherein performing the communication further comprises receiving an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

[0183] Aspect 18: The method according to any one of aspects 15 to 17, wherein the sub-block size and the index modulation mode are based at least in part on one or more of the following: peak to average power ratio (PAPR) requirements or data requirements.

[0184] Aspect 19: The method according to any one of aspects 15 to 18, wherein the sub-block is associated with a delay dimension and a Doppler dimension, and wherein the index modulation pattern indicates a non-zero pattern associated with the sub-block.

[0185] Aspect 20: The method according to any one of aspects 15 to 19, wherein the capability signaling indicates a maximum sub-block size supported by the UE.

[0186] Aspect 21: The method according to any one of aspects 15 to 20, wherein the sub-block size is based at least in part on a modulation order.

[0187] Aspect 22: A method according to any one of Aspects 15 to 21, wherein the subblock size is a data subblock size and the index modulation mode is a data index modulation mode, wherein the indication of the subblock size and the index modulation mode is sent via a reference signal, and wherein the reference signal is at least partially based on a reference signal subblock size and a reference signal index modulation mode.

[0188] Aspect 23: A method according to any one of Aspects 15 to 22, wherein the sub-block is selected at least in part based on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, and wherein a certain number of resources in the sub-block are selected as non-zero, and the remaining resources in the sub-block are selected as zero.

[0189] Aspect 24: The method according to aspect 23, wherein one of the plurality of Doppler resources corresponding to the delay is selected to be non-zero.

[0190] Aspect 25: A method according to any one of Aspects 15 to 24, wherein the sub-block is selected at least in part based on a plurality of Doppler resources corresponding to a plurality of delays, and wherein a certain number of resources in the sub-block are selected as non-zero and the remaining resources in the sub-block are selected as zero.

[0191] Aspect 26: A method according to any one of Aspects 15 to 25, wherein the sub-block is selected at least in part based on a plurality of delay resources corresponding to a plurality of Doppler resources, and wherein a certain number of resources in the sub-block are selected as non-zero and the remaining resources in the sub-block are selected as zero.

[0192] Aspect 27: The method according to any one of aspects 15 to 26, wherein the number of non-zero resources varies across different sub-blocks.

[0193] Aspect 28: The method according to any one of aspects 15 to 27, wherein the zero resources in the sub-block can be replaced with a non-zero constellation, wherein the non-zero constellation is different from the constellation used for the non-zero resources in the sub-block.

[0194] Aspect 29: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in aspects 1 to 14.

[0195] Aspect 30: A device for wireless communication, the device comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 14.

[0196] Aspect 31: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 14.

[0197] Aspect 32: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 14.

[0198] Aspect 33: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 14.

[0199] Aspect 34: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in aspects 15 to 28.

[0200] Aspect 35: A device for wireless communication, the device comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 15 to 28.

[0201] Aspect 36: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 15 to 28.

[0202] Aspect 37: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 15 to 28.

[0203] Aspect 38: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 15 to 28.

[0204] While the foregoing disclosure provides illustration and description, it is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0205] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of different forms of hardware and / or hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, no reference is made herein to specific software code to describe the operation and behavior of the systems and / or methods, as those skilled in the art will appreciate that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0206] As used herein, "satisfying a threshold" may mean that a value is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, or not equal to a threshold, etc., depending on the context.

[0207] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" a list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b, or c" is intended to encompass a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination of multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other arrangement of a, b, and c).

[0208] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly described as such. In addition, as used herein, the articles "one" and "a kind of" are intended to include one or more projects and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more projects connected with the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects and can be used interchangeably with "one or more". If only want to refer to a project, then use the phrase "only one" or similar terms. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element with" A can also have B). In addition, the phrase "based on" is intended to represent "at least partially based on", unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and one or more processors coupled to the memory, the one or more processors configured to: sending capability signaling indicating that Orthogonal Time-Frequency-Space Index Modulation (OTFS-IM) is supported by the UE; receiving, based at least in part on the capability signaling, an indication of a sub-block size for a sub-block of the OTFS-IM and an index modulation mode associated with the sub-block; and Communicating is performed based at least in part on the indication of the sub-block size and the index modulation mode for the OTFS-IM.

2. The apparatus of claim 1 , wherein to perform the communication, the one or more processors are configured to: An OTFS-IM waveform is received based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM, the OTFS-IM being detectable by the UE based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

3. The apparatus of claim 1 , wherein to perform the communication, the one or more processors are configured to: An OTFS-IM waveform is transmitted based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

4. The apparatus of claim 1 , wherein the sub-block size and the index modulation pattern are based at least in part on one or more of: a peak-to-average power ratio (PAPR) requirement or a data requirement, wherein the sub-block is associated with a delay dimension and a Doppler dimension, and wherein the index modulation pattern indicates a non-zero pattern associated with the sub-block.

5. The apparatus of claim 1, wherein the capability signaling indicates a maximum subblock size supported by the UE, and wherein the subblock size is based at least in part on a modulation order.

6. The apparatus of claim 1 , wherein the subblock size is a data subblock size and the index modulation mode is a data index modulation mode, wherein the indication of the subblock size and the index modulation mode is received via a reference signal, wherein the reference signal is based at least in part on a reference signal subblock size and a reference signal index modulation mode, and wherein the indication of the reference signal subblock size and the reference signal index modulation mode is stored by the UE and used to detect the reference signal.

7. The apparatus of claim 1 , wherein the sub-block is selected based at least in part on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero, and wherein one Doppler resource of the plurality of Doppler resources corresponding to the delay is selected to be non-zero.

8. The apparatus of claim 1 , wherein the sub-block is selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero.

9. The apparatus of claim 1 , wherein the sub-block is selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero.

10. The apparatus of claim 1, wherein the number of non-zero resources varies across different sub-blocks.

11. The apparatus of claim 1 , wherein the zero resources in the sub-block can be replaced with a non-zero constellation, wherein the non-zero constellation is different from a constellation used for the non-zero resources in the sub-block.

12. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and one or more processors coupled to the memory, the one or more processors configured to: receiving capability signaling indicating that Orthogonal Time-Frequency-Space Index Modulation (OTFS-IM) is supported by a user equipment (UE); sending an indication of a sub-block size for a sub-block of the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling; and Communicating is performed based at least in part on the indication of the sub-block size and the index modulation mode for the OTFS-IM.

13. The apparatus of claim 12, wherein to perform the communication, the one or more processors are configured to: An OTFS-IM waveform is transmitted based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

14. The apparatus of claim 12, wherein to perform the communication, the one or more processors are configured to: An OTFS-IM waveform is received based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

15. The apparatus of claim 12 , wherein the sub-block size and the index modulation pattern are based at least in part on one or more of: a peak-to-average power ratio (PAPR) requirement or a data requirement, wherein the sub-block is associated with a delay dimension and a Doppler dimension, and wherein the index modulation pattern indicates a non-zero pattern associated with the sub-block.

16. The apparatus of claim 12, wherein the capability signaling indicates a maximum subblock size supported by the UE, and wherein the subblock size is based at least in part on a modulation order.

17. The apparatus of claim 12, wherein the subblock size is a data subblock size and the index modulation mode is a data index modulation mode, wherein the indication of the subblock size and the index modulation mode is sent via a reference signal, and wherein the reference signal is based at least in part on a reference signal subblock size and a reference signal index modulation mode.

18. The apparatus of claim 12 , wherein the sub-block is selected based at least in part on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, wherein a number of resources in the sub-block are selected to be non-zero and remaining resources in the sub-block are selected to be zero, and wherein one Doppler resource of the plurality of Doppler resources corresponding to the delay is selected to be non-zero.

19. The apparatus of claim 12, wherein the sub-block is selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero.

20. The apparatus of claim 12, wherein the sub-block is selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero.

21. The apparatus of claim 12, wherein the number of non-zero resources varies across different sub-blocks.

22. The apparatus of claim 12, wherein the zero resources in the sub-block can be replaced with a non-zero constellation, wherein the non-zero constellation is different from the constellation used for the non-zero resources in the sub-block.

23. A method of wireless communication performed by a user equipment (UE), the method comprising: sending capability signaling indicating that Orthogonal Time-Frequency-Space Index Modulation (OTFS-IM) is supported by the UE; receiving, based at least in part on the capability signaling, an indication of a sub-block size for a sub-block of the OTFS-IM and an index modulation mode associated with the sub-block; and Communicating is performed based at least in part on the indication of the sub-block size and the index modulation mode for the OTFS-IM.

24. The method of claim 23, wherein performing the communication further comprises: receiving an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM, the OTFS-IM being detectable by the UE based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM; or An OTFS-IM waveform is transmitted based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

25. The method of claim 23, wherein the sub-blocks are associated with a delay dimension and a Doppler dimension, and wherein the index modulation pattern indicates a non-zero pattern associated with the sub-blocks.

26. The method of claim 23, wherein: The sub-block is selected based at least in part on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero; The sub-block is selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, and wherein a number of resources in the sub-block are selected to be non-zero and a remaining number of resources in the sub-block are selected to be zero; or The sub-block is selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero.

27. A method of wireless communication performed by a network node, the method comprising: receiving capability signaling indicating that Orthogonal Time-Frequency-Space Index Modulation (OTFS-IM) is supported by a user equipment (UE); sending an indication of a sub-block size for a sub-block of the OTFS-IM and an index modulation mode associated with the sub-block based at least in part on the capability signaling; and Communicating is performed based at least in part on the indication of the sub-block size and the index modulation mode for the OTFS-IM.

28. The method of claim 27, wherein performing the communication further comprises: transmitting an OTFS-IM waveform based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM; or An OTFS-IM waveform is received based at least in part on the indication of the sub-block size and the index modulation mode for OTFS-IM.

29. The method of claim 27, wherein the sub-blocks are associated with a delay dimension and a Doppler dimension, and wherein the index modulation pattern indicates a non-zero pattern associated with the sub-blocks.

30. The method of claim 27, wherein: The sub-block is selected based at least in part on a Doppler dimension, wherein a plurality of Doppler resources corresponding to delays are selected as the sub-block, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero; The sub-block is selected based at least in part on a plurality of Doppler resources corresponding to a plurality of delays, and wherein a number of resources in the sub-block are selected to be non-zero and a remaining number of resources in the sub-block are selected to be zero; or The sub-block is selected based at least in part on a plurality of delay resources corresponding to a plurality of Doppler resources, and wherein a number of resources in the sub-block are selected to be non-zero and the remaining resources in the sub-block are selected to be zero.

Images