Low peak-to-average power ratio demodulation reference signal sequences and modes

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may determine one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, each of the one or more demodulation reference signal (DMRS) scrambling sequences corresponding to a respective port of one or more ports, the one or more ports are associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communications are based on Discrete Fourier Transform Expansion Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) communications. The UE may receive the downlink MIMO communication comprising a DMRS according to an intra-slot DMRS pattern, the intra-slot DMRS pattern indicating one or more time domain multiplexed symbols, each of the one or more time domain multiplexed symbols being at least partially allocated with at least one of the one or more DMRS scrambling code sequences. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. non-provisional patent application No. 17 / 812,630, filed on July 14, 2022, entitled "A LOW PEAK-TO-AVERAGE POWER RATIO DEMODULATION REFERENCE SIGNAL SEQUENCE AND PATTERN" and assigned to the assignee of this application. The disclosure of the prior application is considered a part of this patent application and is incorporated into this patent application by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for low peak-to-average power ratio (PAPR) demodulation reference signal (DMRS) sequences and patterns. Background Art

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

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, 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, region and / or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink to better integrate with other open standards, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to fully understand the above-mentioned features of the present disclosure, a more specific description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0008] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0009] 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.

[0010] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0011] Figure 4A and Figure 4B is a diagram of examples associated with low peak-to-average power ratio (PAPR) demodulation reference signal (DMRS) sequences and patterns according to the present disclosure.

[0012] Figure 5 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0013] Figure 6 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0014] Figure 7is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0015] Figure 8 is a diagram of an example apparatus for wireless communications according to the present disclosure. Summary of the invention

[0016] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include: using a low peak-to-average power ratio (PAPR) sequence generator to determine one or more demodulation reference signal (DMRS) scrambling sequences, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink multiple-input multiple-output (MIMO) communication, wherein the downlink MIMO communication is a communication based on discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM). The method may include: receiving the downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, and each of the one or more time-domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0017] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include: using a low PAPR sequence generator to determine one or more DMRS scrambling sequences, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication. The method may include: sending the downlink MIMO communication including DMRS according to a DMRS pattern in a time slot, wherein the DMRS pattern in the time slot indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0018] Some aspects described herein relate to a UE for wireless communication. The UE may include a memory; and one or more processors, the one or more processors being coupled to the memory. The one or more processors may be configured to determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, the one or more ports being associated with downlink MIMO communication, wherein the downlink MIMO communication is a communication based on DFT-s-OFDM. The one or more processors may be configured to receive the downlink MIMO communication including DMRS according to a DMRS pattern within a time slot, wherein the DMRS pattern within the time slot indicates one or more time domain multiplexing symbols, each of the one or more time domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0019] Some aspects described herein relate to a network node for wireless communication. The network node may include a memory; and one or more processors, the one or more processors coupled to the memory. The one or more processors may be configured to determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is based on DFT-s-OFDM communication. The one or more processors may be configured to send the downlink MIMO communication including DMRS according to a DMRS pattern in a time slot, wherein the DMRS pattern in the time slot indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0020] 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 determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is a communication based on DFT-s-OFDM. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive the downlink MIMO communication including DMRS according to a DMRS pattern within a time slot, wherein the DMRS pattern within the time slot indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0021] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to use a low PAPR sequence generator to determine one or more DMRS scrambling sequences, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is a communication based on DFT-s-OFDM. The instruction set, when executed by one or more processors of the network node, may cause the network node to send the downlink MIMO communication including DMRS according to a DMRS pattern in a time slot, wherein the DMRS pattern in the time slot indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0022] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: a component for determining one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication. The apparatus may include: a component for receiving the downlink MIMO communication including DMRS according to a DMRS pattern within a time slot, wherein the DMRS pattern within the time slot indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0023] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: a component for determining one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication. The apparatus may include: a component for sending the downlink MIMO communication including DMRS according to a DMRS pattern in a time slot, wherein the DMRS pattern in the time slot indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0024] The various aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0025] The features and technical advantages of the examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, and not as a definition of the limitations of the claims.

[0026] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. DETAILED DESCRIPTION

[0027] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the protection scope of the present disclosure will be fully conveyed to those skilled in the art. It should be appreciated by those skilled in the art 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 may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functionality, or structures and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present invention.

[0028] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0029] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT and / or RATs beyond 5G (e.g., 6G).

[0030] Figure 1 1 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 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). For another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0031] In some examples, the network node 110 is or includes a network node (such as an RU) that communicates with the UE 120 via a radio access link. In some examples, the network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, the network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, the network node 110 may include an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0032] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1In 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. The 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 the mobile network node 110 (e.g., a mobile network node).

[0033] In some aspects, the term "base station" or "network node" may refer to an aggregated 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 a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0034] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0035] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0036] 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 link or a wired backhaul link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0037] UE 120 may be dispersed throughout the 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 smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0038] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors and / or location tags, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included in a housing that houses components of 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, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0039] Generally speaking, 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. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0040] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more side link channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0041] The devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various categories, bands, channels, etc., according to frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz 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 "below 6 GHz" band in various documents and articles. A similar naming problem 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).

[0042] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz to 24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6GHz to 71GHz), FR4 (52.6GHz to 114.25GHz) and FR5 (114.25GHz to 300GHz). Each of these higher frequency bands falls within the EHF band.

[0043] Considering the above examples, unless otherwise explicitly stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise explicitly stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0044] In some aspects, the UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may determine one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communications are discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-s-OFDM) based communications; and receive the downlink MIMO communications including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one of the one or more DMRS scrambling sequences. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0045] In some aspects, the network node may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communications, wherein the downlink MIMO communications are DFT-s-OFDM-based communications; and transmit the downlink MIMO communications including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0046] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0047] Figure 22 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0048] At the network node 110, the transmit processor 220 may receive data intended for the UE 120 (or a set of UEs 120) from the data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQI) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may further process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 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 to 234t).

[0049] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0050] 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.

[0051] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or 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.

[0052] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (eg, with reference to FIG. 4A to FIG. 8 ).

[0053] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232 shown as DEMOD), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., reference 20 to FIG. 1 ). FIG. 4A to FIG. 8 ).

[0054] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 5 The process of 500 Figure 6 600 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 that stores 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 5 The process of 500 Figure 6 The process 600 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0055] In some aspects, a UE (e.g., UE 120) includes: means for determining one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication; and / or means for receiving the downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences. Means for UE 120 to perform operations described herein may include, for example, one or more of the 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.

[0056] In some aspects, a network node (e.g., network node 110) includes: means for determining one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication; and / or means for transmitting the downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences. In some aspects, means for a network node to perform operations described herein may include, for example, one or more of a communication manager 150, a transmit processor 220, a TX MIMO processor 230, a modem 232, an antenna 234, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0057] Although Figure 2 The blocks in the 200 and 210 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0058] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0059] The deployment of a communication system (such as a 5G NR system) may be arranged with various components or components in a variety of ways. In a 5GNR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment may be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality may be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. 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).

[0060] An aggregated base station (e.g., an aggregated 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, a 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 distributed across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a 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), and the like.

[0061] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0062] Figure 3 3 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310, which may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0063] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of these units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, and the wireless interface may include a receiver, a transmitter, or a transceiver (such as an RF transceiver), which is configured to receive signals or send signals to one or more of the other units via a wireless transmission medium, or both.

[0064] In some aspects, CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 310. CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface such as an E1 interface. As needed, CU 310 may be implemented to communicate with DU 330 for network control and signaling.

[0065] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partition such as that defined by 3GPP. In some aspects, one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0066] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions based on functional partitioning (e.g., functional partitioning defined by 3GPP) such as lower layer functional partitioning, or low PHY layer functions such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In such an 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 communicating with the control plane and user plane of 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.

[0067] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RTRIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0068] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0069] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0070] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0071] According to some wireless communication standards, an Orthogonal Frequency Division Multiplexing (OFDM) waveform is the only configurable waveform that can be used for downlink data communications, such as physical downlink shared channel (PDSCH) communications. It is worth noting that some wireless communication standards support the use of a discrete Fourier transform spread OFDM (DFT-s-OFDM) based waveform (also known as transform precoding), but only for uplink communications with a single spatial layer.

[0072] Additionally, a demodulation reference signal (DMRS) scrambling sequence to be used for PDSCH communication may be based on a pseudo-random quadrature phase shift keying (QPSK) sequence, wherein the scrambling sequence is determined based on the output of a Gold sequence generator. Such scrambling sequences are designed such that the peak-to-average power ratio (PAPR) of the DMRS does not exceed the PAPR of symbols carrying data in downlink communication, assuming that an OFDM waveform is used for downlink communication.

[0073] It is noteworthy that when operating in sub-terahertz (sub-THz) bands (e.g., bands at or above approximately 52 gigahertz (GHz)), a single-carrier waveform (such as DFT-s-OFDM) is preferred over OFDM for downlink multiple-input multiple-output (MIMO) communications. One reason that a single-carrier waveform is preferred over OFDM for downlink MIMO communications is that strong phase noise is expected in the sub-THZ band (due to the relatively high carrier frequency), and the single-carrier waveform provides improved phase noise resilience by allowing the use of a time-domain phase tracking reference signal (PTRS) to provide phase noise suppression. Another reason that a single-carrier waveform is preferred over OFDM for downlink MIMO communications in sub-THz bands is that efficient power amplifier (PA) design is challenging, and PAs in sub-THz bands suffer from inefficiency and limited linear regions. To suppress this problem, a single-carrier waveform that naturally exhibits lower PAPR characteristics is preferred.

[0074] In one illustrative example, the following table shows the throughput (TP) gain achievable using a DFT-s-OFDM waveform compared to an OFDM waveform for different signal-to-noise ratio (SNR) values:

[0075] SNR[dB] OFDM TP[Gbps] DFT-s-OFDM TP[Gbps] TP gain [%] 15 47.7 57.6 22％ 20 67.5 79.9 18％ 25 89.3 104.1 17％ 30 103.8 122.5 18％ 35 112.4 138.8 25％

[0076] In this example, simulations were used assuming a 4×4 downlink MIMO use case at a carrier frequency of 144 GHz (and assumptions on the associated phase noise mask), with a bandwidth of 7.5 GHz and a subcarrier spacing (SCS) of 960 kilohertz (kHz).

[0077] However, even when a DFT-s-OFDM waveform is available for downlink MIMO communications, the DMRS symbols associated with downlink MIMO communications will still be OFDM-based. This is required to achieve frequency domain equalization that is only possible with OFDM-based DMRS.

[0078] When considering the low PAPR of the DFT-s-OFDM waveform (compared to the OFDM waveform), the DMRS scrambling sequence determined based on the Golden sequence generator is no longer sufficient, because the DMRS symbols can exhibit a higher PAPR than the PAPR of the symbols carrying data for downlink MIMO communication. The severity of this problem increases for wireless communications in sub-Thz bands, where large bandwidths (e.g., in the order of Ghz) are used to support extreme data rates, which can result in higher PAPRs. With this in mind, the DMRS scrambling sequence generation should be adjusted so that the PAPR of the DMRS is equal to or lower than the PAPR of the symbols carrying data in downlink MIMO communication.

[0079] Some techniques and apparatuses described herein implement low PAPR DMRS sequences and patterns. In some aspects, a wireless communication device (e.g., a UE, a network node, etc.) may use a low PAPR sequence generator to determine one or more DMRS scrambling sequences, wherein each DMRS scrambling sequence corresponds to a corresponding port in one or more ports associated with downlink MIMO communication (e.g., DFT-s-OFDM-based communication). The wireless communication device may then communicate (e.g., send or receive) downlink MIMO communication including DMRS according to an intra-time slot DMRS pattern, wherein the intra-time slot DMRS pattern indicates one or more time domain multiplexing symbols, each of the one or more time domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0080] In some aspects, the techniques and apparatus described herein enable low PAPR DFT-s-OFDM waveforms to be used for downlink MIMO transmissions (e.g., in sub-Thz bands), thereby enabling the increased throughput, range extension, and power efficiency provided by using low PAPR DFT-s-OFDM waveforms. For example, as described herein, a low PAPR DMRS scrambling sequence may cause the PAPR in one or more DMRS symbols to be approximately equal to or lower than the PAPR in a symbol carrying data for downlink MIMO communications, thereby facilitating the use of low PAPR DFT-s-OFDM waveforms for downlink MIMO transmissions. In addition, the intra-slot DMRS patterns described herein may be used to achieve low PAPR in one or more DMRS symbols, further facilitating the use of low PAPR DFT-s-OFDM waveforms for downlink MIMO transmissions. Additionally, the techniques and apparatus described herein may enable support for a large number of ports (e.g., more than 12 ports) to be used for downlink MIMO communications. Additional details are provided below.

[0081] Figure 4A and Figure 4B 4 is a diagram of an example 400 associated with low PAPR DMRS sequences and patterns according to the present disclosure. Figure 4A As shown, example 400 includes communications between a network node 110 and a UE 120. In some aspects, the network node 110 and the UE 120 may be included in a wireless network, such as the wireless network 100. The network node 110 and the UE 120 may communicate via a wireless access link, which may include an uplink and a downlink.

[0082] As shown in the figure 402, UE 120 can use a low PAPR sequence generator to determine one or more DMRS scrambling sequences. In some aspects, each of the one or more DMRS scrambling sequences may correspond to a corresponding port in one or more ports, wherein each of the one or more ports is associated with downlink MIMO communication. That is, downlink MIMO communication can be scheduled to be sent by network node 110 and received by UE 120 via one or more ports. Here, each of the one or more DMRS scrambling sequences determined by the low PAPR sequence generator may correspond to different ports in one or more ports. In some aspects, downlink communication is communication based on DFT-s-OFDM.

[0083] In some aspects, the low PAPR sequence generator is a Zadoff-Chu (ZC) sequence generator. That is, in some aspects, the UE 120 is configured with a low PAPR sequence generator that is configured to generate one or more DMRS scrambling sequences based on one or more ZC sequences. It is noteworthy that the number of ZC sequences that can be generated by the UE 120 is not significantly limited in higher frequency bands (e.g., sub-THz bands) because the required sequence length is relatively large due to the relatively large bandwidth being used for wireless communications in higher frequency bands. In addition, the relatively high attenuation of wireless communications in sub-THz bands, together with the directivity of the transmit beam used for wireless communications, reduces cross-cell interference.

[0084] Additionally, the ZC sequence is a constant amplitude zero autocorrelation waveform (CAZAC) sequence that maintains the property of time-frequency domain equivalence, which means that the inverse DFT of a given ZC sequence results in another scaled ZC sequence. Therefore, the use of ZC sequences can enable extremely low PAPR. However, this property is not maintained when orthogonal cover codes (OCC) and frequency domain multiplexing (FDM) of multiple sequences (the multiple sequences corresponding to different ports) are used in DMRS symbols to support downlink MIMO communications. In some aspects, this limitation can be alleviated by implementing an intra-slot DMRS pattern in which each DMRS symbol is at least partially allocated with a sequence corresponding to a single spatial layer (i.e., a single port), and different spatial layers are time domain multiplexed (TDM). In some aspects, such an intra-slot DMRS pattern eliminates the need for OCC and FDM to support multiple ports. Additional details about the intra-slot DMRS pattern are described below.

[0085] As shown by reference numeral 404, the network node 110 may determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each DMRS scrambling sequence corresponds to a respective port of one or more ports associated with downlink MIMO communication. In some aspects, the network node 110 may determine the one or more DMRS scrambling sequences in a manner similar to the manner in which the UE 120 determines the one or more DMRS scrambling sequences, as described herein.

[0086] The network node 110 may transmit according to the intra-slot DMRS pattern and the UE 120 may receive the downlink MIMO communication including the DMRS according to the intra-slot DMRS pattern, as shown by reference numeral 406. In some aspects, the downlink MIMO communication is communicated (e.g., transmitted by the network node 110 or received by the UE 120) at a frequency greater than about 52 GHz. For example, in some aspects, the downlink MIMO communication may be communicated in a sub-THz frequency band.

[0087] In some aspects, the intra-slot DMRS pattern indicates one or more time domain multiplexing symbols, wherein each of the one or more time domain multiplexing symbols is at least partially allocated with at least one of the one or more DMRS scrambling sequences. It is noteworthy that such intra-slot DMRS patterns eliminate the need for OCC and FDM to support the use of multiple ports to convey the downlink MIMO communication. In some aspects, the intra-slot DMRS pattern enables support for communication via a large number of ports (e.g., more than 12 ports). For sub-Thz situations, such a large number of ports can be used, for example, for lens MIMO, where each port corresponds to a different beam.

[0088] Figure 4B 1 is a diagram illustrating an example of a DMRS pattern within a time slot, the DMRS pattern within the time slot indicating one or more time domain multiplexing symbols, each of the one or more time domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences. Figure 4B In the example shown, the intra-slot DMRS pattern is used for a group of time slots (e.g., Figure 4B The first time slot (eg, as shown in time slots 1 to 3) is shown Figure 4Bin the identified time slot 1). Here, as shown in the figure, within this time slot, the DMRS pattern indicates that the first time-domain multiplexing symbol (e.g., symbol 0) of the first time slot is at least partially allocated with a first DMRS scrambling sequence (e.g., DMRS scrambling sequence A), where the first DMRS scrambling sequence corresponds to a first port (e.g., port 1) associated with the downlink MIMO communication. The DMRS pattern within the time slot also indicates that the second time-domain multiplexing symbol (e.g., symbol 1) of the first time slot is at least partially allocated with a second DMRS scrambling sequence (e.g., DMRS scrambling sequence B), where the second DMRS scrambling sequence corresponds to a second port (e.g., port 2) associated with the downlink MIMO communication. The DMRS pattern within the time slot also indicates that the third time-domain multiplexing symbol (e.g., symbol 2) of the first time slot is at least partially allocated with a third DMRS scrambling sequence (e.g., DMRS scrambling sequence C), where the third DMRS scrambling sequence corresponds to a third port (e.g., port 3) associated with the downlink MIMO communication. The DMRS pattern within the time slot also indicates that the fourth time-domain multiplexing symbol (e.g., symbol 3) of the first time slot is at least partially allocated with a fourth DMRS scrambling sequence (e.g., DMRS scrambling sequence D), where the fourth DMRS scrambling sequence corresponds to a fourth port (e.g., port 4) associated with the downlink MIMO communication. As shown in the figure, the other symbols of the first time slot (as well as the symbols of time slot 2 and time slot 3) may carry data associated with the downlink MIMO communication. The DMRS pattern within the time slot (such as Figure 4B the DMRS pattern within the time slot illustrated) can keep the PAPR of the symbols carrying DMRS at a low PAPR (e.g., less than or approximately equal to the PAPR of the symbols carrying data), which means that the PAPR of the DMRS symbols is not a limiting factor for conveying the downlink MIMO communication. Additionally, using the DMRS pattern within the time slot (such as Figure 4B the DMRS pattern within the time slot illustrated) achieves a low PAPR in the symbols carrying DMRS, providing channel estimation processing gain.

[0089] In some aspects, the DMRS pattern within the time slot may indicate that a given symbol among the one or more time-domain multiplexing symbols is partially allocated with a single DMRS scrambling sequence among the one or more DMRS scrambling sequences. For example, the given symbol may include N frequency resources (e.g., subcarriers, resource blocks, etc.), and the DMRS pattern within the time slot may indicate that M (M < N) of the N frequency resources are allocated with the single DMRS scrambling sequence. In some aspects, the partial allocation of the given symbol with a single DMRS scrambling sequence may provide inter-carrier interference (ICI) suppression (e.g., caused by phase noise impairment) on the given symbol, or may improve channel estimation.

[0090] Additionally or alternatively, the intra-slot DMRS pattern may indicate that a given symbol of the one or more time-domain multiplexed symbols is completely allocated with a single DMRS scrambling sequence of the one or more DMRS scrambling sequences. For example, the given symbol may include N frequency resources, and the intra-slot DMRS pattern may indicate that each of the N frequency resources is allocated with the single DMRS scrambling sequence. In some aspects, the complete allocation of the given symbol with a single sequence may provide a channel estimation processing gain (e.g., due to increased frequency domain resolution). Additionally, the complete allocation of the given symbol may increase the possible number of sequences that can be used, which facilitates the use of a low PAPR sequence generator, as described above.

[0091] In some aspects, whether a given symbol is fully allocated or partially allocated can be based at least in part on a dominant impairment associated with the symbol. In some aspects, a determination of whether a given symbol is fully allocated or partially allocated can be independent of such a determination for another symbol (e.g., each symbol can be allocated independently).

[0092] In some aspects, the partial allocation of DMRS-carrying symbols may be performed using different combing factors depending on the dominant impairment (e.g., controlling the number of zero-power resource elements (REs) between the allocated REs). In some aspects, assuming that each DMRS symbol contains only a single layer (while the symbols carrying data of the slot contain all layers), the network node 110 may be configured (e.g., in accordance with the applicable wireless communication standard) with a DMRS boosting factor to be applied to the full allocation of DMRS symbols. In some aspects, the DMRS boosting factor may be adjusted so that the power of the DMRS-carrying symbols will be increased (e.g., maximized) at different PAPR values.

[0093] In some aspects, the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences. For example, the intra-slot DMRS pattern may indicate that M1 (M1 ≥ 1) frequency resources (e.g., subcarrier resource blocks, etc.) of the given symbol are allocated with a first DMRS scrambling sequence, and M2 (M2 ≥ 1) frequency resources (e.g., subcarrier resource blocks, etc.) of the given symbol are allocated with a second DMRS scrambling sequence, wherein the given symbol includes N frequency resources. In this example, the sum of M1 and M2 is less than or equal to N. In some aspects, multiple DMRS scrambling sequences (e.g., two DMRS scrambling sequences) each corresponding to a corresponding port may be multiplexed on a given DMRS symbol while still utilizing the intra-slot DMRS pattern described herein to, for example, reduce DMRS overhead.

[0094] It is worth noting that while the intra-slot DMRS pattern described herein may be used for a DFT-s-OFDM-based waveform, the intra-slot DMRS pattern may also be applied to communications using an OFDM waveform (e.g., with or without a ZC sequence). In some aspects, applying the intra-slot DMRS pattern to an OFDM waveform may reduce the PAPR in symbols carrying the DMRS to increase channel estimation processing gain.

[0095] In some aspects, the network node 110 may send and the UE 120 may receive a configuration indicating the DMRS pattern within the time slot. In some aspects, the configuration is communicated (e.g., sent or received) via downlink control information (DCI), medium access control (MAC) control element (CE), or radio resource control (RRC) signaling. In some aspects, the network node 110 may send the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold. For example, the network node 110 may send the configuration for the DMRS pattern within the time slot to the UE 120 based at least in part on determining that the SNR of the channel associated with the downlink MIMO communication satisfies a threshold. In this way, the network node 110 may (dynamically) adjust the mode within the time slot (e.g., change a given symbol from a partial allocation to a full allocation, or vice versa) to increase throughput, reliability, etc. of wireless communication.

[0096] In some aspects, the network node 110 may transmit the DMRS according to an inter-slot DMRS pattern, and the UE 120 may receive the DMRS according to an inter-slot DMRS pattern that indicates one or more time slots in a plurality of time slots for the downlink MIMO communication in which the DMRS is to be received. Figure 4B , the inter-slot pattern indicates that the DMRS is communicated only in the first slot of a plurality of slots (e.g., slot 1, slot 2, and slot 3). In some aspects, the inter-slot DMRS pattern indicates that the DMRS is carried in a relatively small number of slots (e.g., one slot in every eight slots) in a given plurality of slots. Such an inter-slot DMRS pattern may be referred to as a sparse inter-slot DMRS pattern. In some aspects, a sparse inter-slot DMRS pattern may result in a reduction in PDSCH pilot overhead and an increase in data rate (e.g., compared to a less sparse inter-slot DMRS pattern). In some aspects, a sparse inter-slot DMRS pattern may be utilized in combination with an intra-slot DMRS pattern described herein to reduce overhead (e.g., even though the number of symbols carrying the DMRS according to the intra-slot DMRS pattern is greater than the number of symbols typically used to carry the DMRS).

[0097] In some aspects, the sparse inter-slot DMRS pattern may be suitable for downlink MIMO communications in sub-THz bands because it is expected that UEs 120 using the sub-THz bands will be relatively static (e.g., low mobility) and the channels in the sub-THz bands will be relatively flat (e.g., due to low delay spread and strong line-of-sight components).

[0098] In some aspects, the network node 110 may send and the UE 120 may receive a configuration indicating the inter-slot DMRS pattern. In some aspects, the configuration is communicated (e.g., sent or received) via DCI, MAC-CE, or RRC signaling. In some aspects, the network node 110 may send the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold. For example, the network node 110 may send the configuration for the inter-slot DMRS pattern to the UE 120 based at least in part on determining that an SNR of a channel associated with the downlink MIMO communication satisfies (e.g., is above or below) a threshold. In this way, the network node 110 may (dynamically) adjust the inter-slot pattern to increase throughput, reliability, etc. of wireless communication.

[0099] As indicated above, Figure 4A and Figure 4B are provided as examples. Other examples can be found in the Figure 4A and Figure 4B The examples described are different.

[0100] Figure 5 is a diagram illustrating an example process 500 performed, for example, by a UE in accordance with the present disclosure. Example process 500 is an example in which a UE (eg, UE 120) performs operations associated with low PAPR DMRS sequences and patterns.

[0101] like Figure 5 As shown, in some aspects, process 500 may include determining, using a low PAPR sequence generator, one or more DMRS scrambling sequences, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communication, wherein the downlink MIMO communication is DFT-s-OFDM-based communication (block 510). For example, a UE (e.g., using Figure 7The communication manager 140 and / or the low PAPR scrambling sequence generator 708 depicted in the figure can use the low PAPR sequence generator to determine one or more DMRS scrambling sequences, wherein each DMRS scrambling sequence of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports, the one or more ports being associated with downlink MIMO communication, wherein the downlink MIMO communication is DFT-s-OFDM based communication, as described above.

[0102] like Figure 5 As further shown, in some aspects, process 500 may include receiving the downlink MIMO communication including the DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences (block 520). For example, a UE (e.g., using Figure 7 The communication manager 140 and / or receiving component 702 depicted in the figure can receive the downlink MIMO communication including DMRS according to a time slot DMRS pattern, wherein the time slot DMRS pattern indicates one or more time domain multiplexing symbols, each symbol of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences, as described above.

[0103] Process 500 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.

[0104] In a first aspect, the intra-slot DMRS pattern indicates that symbols of the one or more time-domain multiplexing symbols are partially allocated with a single DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0105] In a second aspect, alone or in combination with the first aspect, the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0106] In a third aspect, either alone or in combination with one or more of the first and second aspects, the intra-time slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and is at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0107] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the low PAPR sequence generator is a Zadoff-Chu sequence generator.

[0108] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the downlink MIMO communication is received at a frequency greater than about 52 GHz.

[0109] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the process 500 includes receiving a configuration indicating a DMRS pattern within the time slot.

[0110] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the configuration is received via at least one of DCI, MAC-CE or RRC signaling.

[0111] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, the DMRS is received according to an inter-slot DMRS pattern, which indicates one or more time slots in multiple time slots of the downlink MIMO communication in which the DMRS is to be received.

[0112] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the process 500 includes receiving a configuration indicating the inter-slot DMRS pattern.

[0113] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the configuration is received via at least one of DCI, MAC-CE or RRC signaling.

[0114] although Figure 5 An example block diagram of process 500 is shown, but in some aspects, process 500 may include Figure 5 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 500. Additionally or alternatively, two or more of the blocks in the process 500 may be performed in parallel.

[0115] Figure 6 is a diagram illustrating an example process 600 performed, for example, by a network node in accordance with the present disclosure. The example process 600 is an example in which a network node (eg, network node 110) performs operations associated with low PAPR DMRS sequences and patterns.

[0116] like Figure 6As shown, in some aspects, process 600 may include determining, using a low PAPR sequence generator, one or more DMRS scrambling sequences, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communication, wherein the downlink MIMO communication is DFT-s-OFDM-based communication (block 610). For example, a network node (e.g., using Figure 8 The communication manager 150 and / or the low PAPR scrambling sequence generator 808 depicted in the figure can use the low PAPR sequence generator to determine one or more DMRS scrambling sequences, wherein each DMRS scrambling sequence of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports, the one or more ports being associated with downlink MIMO communication, wherein the downlink MIMO communication is DFT-s-OFDM based communication, as described above.

[0117] like Figure 6 As further shown, in some aspects, process 600 may include: transmitting the downlink MIMO communication including the DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences (block 620). For example, a network node (e.g., using Figure 8 The communication manager 150 and / or the sending component 804 depicted in the figure can send the downlink MIMO communication including DMRS according to a time slot DMRS pattern, wherein the time slot DMRS pattern indicates one or more time domain multiplexing symbols, each symbol of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences, as described above.

[0118] Process 600 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.

[0119] In a first aspect, the intra-slot DMRS pattern indicates that a symbol of the one or more time-domain multiplexing symbols is at least partially allocated with a single DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0120] In a second aspect, alone or in combination with the first aspect, the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0121] In a third aspect, either alone or in combination with one or more of the first and second aspects, the intra-time slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and is at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0122] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the low PAPR sequence generator is a Zadoff-Chu sequence generator.

[0123] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the downlink MIMO communication is transmitted at a frequency greater than about 52 GHz.

[0124] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, process 600 includes sending a configuration indicating a DMRS pattern within the time slot.

[0125] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the configuration is sent via at least one of DCI, MAC-CE or RRC signaling.

[0126] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, process 600 includes sending the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

[0127] In the ninth aspect, alone or in combination with one or more of the first to eighth aspects, the DMRS is received according to an inter-slot DMRS pattern, which indicates one or more time slots in multiple time slots of the downlink MIMO communication in which the DMRS is to be sent.

[0128] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, process 600 includes: sending a configuration indicating the inter-slot DMRS pattern.

[0129] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the configuration is sent via at least one of DCI, MAC-CE or RRC signaling.

[0130] In a twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, process 600 includes sending the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

[0131] although Figure 6 An example block diagram of process 600 is shown, but in some aspects, process 600 may include Figure 6 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 600. Additionally or alternatively, two or more of the blocks in the process 600 may be performed in parallel.

[0132] Figure 7 is a diagram of an example apparatus 700 for wireless communication according to the present disclosure. The apparatus 700 may be a UE, or the UE may include the apparatus 700. In some aspects, the apparatus 700 includes a receiving component 702 and a transmitting component 704 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 700 may communicate with another apparatus 706 (such as a UE, a base station, or another wireless communication device) using the receiving component 702 and the transmitting component 704. As further shown, the apparatus 700 may include a communication manager 140. The communication manager 140 may include a low PAPR scrambling code sequence generator 708, etc.

[0133] In some aspects, the apparatus 700 may be configured to perform Figure 4A and Figure 4B Additionally or alternatively, the apparatus 700 may be configured to perform one or more processes described herein, such as Figure 5 In some aspects, the apparatus 700 and / or Figure 7 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Figure 7 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the 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 codes 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.

[0134] The receiving component 702 may receive communications from the device 706, such as reference signals, control information, data communications, or combinations thereof. The receiving component 702 may provide the received communications to one or more other components of the device 700. In some aspects, the receiving component 702 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 700. In some aspects, the receiving component 702 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a described UE.

[0135] The transmitting component 704 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 706. In some aspects, one or more other components of the device 700 may generate communications and may provide the generated communications to the transmitting component 704 for transmission to the device 706. In some aspects, the transmitting component 704 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 706. In some aspects, the transmitting component 704 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 704 can be co-located with the receive component 702 in a transceiver.

[0136] The low PAPR scrambling sequence generator 708 may determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication. The receiving component 702 may receive the downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0137] Receiving component 702 can receive a configuration indicating a DMRS pattern within the time slot.

[0138] Receiving component 702 can receive a configuration indicating the inter-slot DMRS pattern.

[0139] Figure 7 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 7 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 7 Two or more components shown may be implemented in a single component, or Figure 7 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 7 The illustrated set of component(s) may be described as being executable by Figure 7 Another collection of components shown performs one or more functions.

[0140] Figure 8 800 is a diagram of an example apparatus 800 for wireless communication according to the present disclosure. Apparatus 800 may be a network node, or a network node may include apparatus 800. In some aspects, apparatus 800 includes a receiving component 802 and a transmitting component 804 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 800 may communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device) using receiving component 802 and transmitting component 804. As further shown, apparatus 800 may include a communication manager 150. Communication manager 150 may include a low PAPR scrambling code sequence generator 808, among other things.

[0141] In some aspects, the apparatus 800 may be configured to perform Figure 4A and Figure 4B Additionally or alternatively, the apparatus 800 may be configured to perform one or more processes described herein, such as Figure 6 The process 600. In some aspects, Figure 8 The device 800 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Figure 8 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the 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 codes 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.

[0142] The receiving component 802 may receive communications from the device 806, such as reference signals, control information, data communications, or combinations thereof. The receiving component 802 may provide the received communications to one or more other components of the device 800. In some aspects, the receiving component 802 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 800. In some aspects, the receiving component 802 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof, of the described network nodes.

[0143] The transmitting component 804 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 806. In some aspects, one or more other components of the device 800 may generate communications and may provide the generated communications to the transmitting component 804 for transmission to the device 806. In some aspects, the transmitting component 804 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 806. In some aspects, the transmitting component 804 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 804 can be co-located with the receive component 802 in a transceiver.

[0144] The low PAPR scrambling sequence generator 808 may determine one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication. The transmitting component 804 may transmit the downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time domain multiplexing symbols, each of the one or more time domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0145] Transmitting component 804 can transmit a configuration indicating a DMRS pattern within the time slot.

[0146] Transmitting component 804 can transmit the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

[0147] Transmitting component 804 can transmit a configuration indicating the inter-slot DMRS pattern.

[0148] Transmitting component 804 can transmit the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

[0149] Figure 8 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 8 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 8 Two or more components shown may be implemented in a single component, or Figure 8 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The illustrated set of component(s) may be described as being executable by Figure 8 Another collection of components shown performs one or more functions.

[0150] The following provides an overview of some aspects of the disclosure:

[0151] Aspect 1: A method of wireless communication performed by a UE, the method comprising: determining one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, the one or more ports being associated with downlink MIMO communication, wherein the downlink MIMO communication is DFT-s-OFDM-based communication; and receiving the downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, wherein the intra-slot DMRS pattern indicates one or more time-domain multiplexing symbols, each of the one or more time-domain multiplexing symbols being at least partially allocated with at least one DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0152] Aspect 2: The method according to aspect 1, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is partially allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0153] Aspect 3: The method according to any one of aspects 1 to 2, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0154] Aspect 4: A method according to any one of Aspects 1 to 3, wherein the intra-time slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and is at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0155] Aspect 5: The method according to any one of aspects 1 to 4, wherein the low PAPR sequence generator is a Zadoff-Chu sequence generator.

[0156] Aspect 6: The method according to any one of aspects 1 to 5, wherein the downlink MIMO communication is received at a frequency greater than about 52 GHz.

[0157] Aspect 7: According to the method according to any one of aspects 1 to 6, the method further includes: receiving a configuration indicating a DMRS pattern within the time slot.

[0158] Aspect 8: The method according to aspect 7, wherein the configuration is received via at least one of DCI, MAC-CE or RRC signaling.

[0159] Aspect 9: A method according to any one of aspects 1 to 8, wherein the DMRS is received according to an inter-slot DMRS pattern, the inter-slot DMRS pattern indicating one or more time slots in a plurality of time slots of the downlink MIMO communication in which the DMRS is to be received.

[0160] Aspect 10: The method according to aspect 9 further comprises: receiving a configuration indicating the inter-slot DMRS pattern.

[0161] Aspect 11: The method according to aspect 10, wherein the configuration is received via at least one of DCI, MAC-CE or RRC signaling.

[0162] Aspect 12: A method of wireless communication performed by a network node, the method comprising: determining one or more DMRS scrambling sequences using a low PAPR sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a corresponding port in one or more ports, and the one or more ports are associated with downlink MIMO communication, wherein the downlink MIMO communication is a DFT-s-OFDM-based communication; and sending the downlink MIMO communication including DMRS according to an intra-time slot DMRS pattern, wherein the intra-time slot DMRS pattern indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

[0163] Aspect 13: The method according to aspect 12, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is at least partially allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0164] Aspect 14: The method according to any one of aspects 12 to 13, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0165] Aspect 15: A method according to any one of Aspects 12 to 14, wherein the intra-time slot DMRS pattern indicates that a symbol in the one or more time domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and is at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences.

[0166] Aspect 16: The method according to any one of Aspects 12 to 15, wherein the low PAPR sequence generator is a Zadoff-Chu sequence generator.

[0167] Aspect 17: The method according to any one of aspects 12 to 16, wherein the downlink MIMO communication is sent at a frequency greater than about 52 GHz.

[0168] Aspect 18: According to the method according to any one of aspects 12 to 17, the method further comprises: sending a configuration indicating a DMRS pattern within the time slot.

[0169] Aspect 19: The method according to aspect 18, wherein the configuration is sent via at least one of DCI, MAC-CE or RRC signaling.

[0170] Aspect 20: The method according to any one of aspects 18 to 19, the method further comprising: sending the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

[0171] Aspect 21: A method according to any one of aspects 12 to 20, wherein the DMRS is sent according to an inter-slot DMRS pattern, the inter-slot DMRS pattern indicating one or more time slots in a plurality of time slots of the downlink MIMO communication in which the DMRS is to be sent.

[0172] Aspect 22: According to the method of aspect 21, the method further comprises: sending a configuration indicating the inter-time slot DMRS pattern.

[0173] Aspect 23: The method according to aspect 22, wherein the configuration is sent via at least one of DCI, MAC-CE or RRC signaling.

[0174] Aspect 24: The method according to any one of aspects 22 to 23, the method further comprising: sending the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

[0175] Aspect 25: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 11.

[0176] Aspect 26: A device for wireless communication, the device comprising a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 11.

[0177] Aspect 27: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method according to one or more of aspects 1 to 11.

[0178] Aspect 28: 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 11.

[0179] Aspect 29: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 11.

[0180] Aspect 30: 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 12 to 24.

[0181] Aspect 31: A device for wireless communication, the device comprising a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 12 to 24.

[0182] Aspect 32: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method according to one or more of aspects 12 to 24.

[0183] Aspect 33: 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 12 to 24.

[0184] Aspect 34: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 12 to 24.

[0185] 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.

[0186] 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, processes and / or functions implemented, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be clear that the systems and / or methods described herein can be implemented by different forms of hardware and / or a combination of 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, the operation and behavior of the system and / or method are not described herein with reference to specific software codes, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0187] As used herein, "satisfying a threshold" may mean 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, not equal to a threshold, etc., depending on the context.

[0188] 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 that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (including a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (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 ordering of a, b and c).

[0189] Any element, action or instruction used herein should not be interpreted as key or necessary unless clearly stated. Moreover, as used herein, the articles "one" and "a kind of" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms are used. Moreover, as used herein, the terms "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "elements with" A can also have B). In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated. Also, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: Memory; and one or more processors coupled to the memory and configured to: determining one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports, the one or more ports being associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communication is based on discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM); and receiving said downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, The intra-time slot DMRS pattern indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences. 2 . The UE according to claim 1 , wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is partially allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences. 3 . The UE according to claim 1 , wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

4. The UE according to claim 1, wherein the intra-time slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and is at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences. 5 . The UE according to claim 1 , wherein the low PAPR sequence generator is a Zadoff-Chu sequence generator.

6. The UE of claim 1, wherein the downlink MIMO communications are received at a frequency greater than approximately 52 gigahertz (GHz).

7. The UE of claim 1, wherein the one or more processors are further configured to receive a configuration indicating a DMRS pattern within the time slot.

8. The UE of claim 7, wherein the configuration is received via at least one of downlink control information (DCI), medium access control (MAC) control element (CE), or radio resource control (RRC) signaling.

9. The UE of claim 1, wherein the DMRS is received according to an inter-slot DMRS pattern indicating one or more time slots in which the DMRS is to be received among a plurality of time slots of the downlink MIMO communication.

10. The UE of claim 9, wherein the one or more processors are further configured to receive a configuration indicating the inter-slot DMRS pattern.

11. The UE of claim 10, wherein the configuration is received via at least one of downlink control information (DCI), medium access control (MAC) control element (CE), or radio resource control (RRC) signaling.

12. A network node for wireless communication, the network node comprising: Memory; and one or more processors coupled to the memory and configured to: determining one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports, the one or more ports being associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communication is based on discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM); and transmitting said downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, The intra-time slot DMRS pattern indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

13. The network node of claim 12, wherein the intra-slot DMRS pattern indicates that a symbol of the one or more time-domain multiplexing symbols is at least partially allocated with a single DMRS scrambling sequence of the one or more DMRS scrambling sequences.

14. The network node of claim 12, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

15. The network node of claim 12, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is at least partially allocated with a first DMRS scrambling sequence in the one or more DMRS scrambling sequences, and is at least partially allocated with a second DMRS scrambling sequence in the one or more DMRS scrambling sequences.

16. The network node of claim 12, wherein the low PAPR sequence generator is a Zadoff-Chu sequence generator.

17. The network node of claim 12, wherein the downlink MIMO communications are transmitted at a frequency greater than approximately 52 gigahertz (GHz).

18. The network node of claim 12, wherein the one or more processors are further configured to send a configuration indicating a DMRS pattern within the time slot.

19. The network node of claim 18, wherein the configuration is sent via at least one of downlink control information (DCI), medium access control (MAC) control element (CE), or radio resource control (RRC) signaling.

20. The network node of claim 18, wherein the one or more processors are further configured to send the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

21. The network node of claim 12, wherein the DMRS is transmitted according to an inter-slot DMRS pattern indicating one or more time slots in a plurality of time slots of the downlink MIMO communication in which the DMRS is to be transmitted.

22. The network node of claim 21, wherein the one or more processors are further configured to send a configuration indicating the inter-slot DMRS pattern.

23. The network node of claim 22, wherein the configuration is sent via at least one of downlink control information (DCI), medium access control (MAC) control element (CE), or radio resource control (RRC) signaling.

24. The network node of claim 22, wherein the one or more processors are further configured to send the configuration based at least in part on determining that a characteristic of a channel associated with the downlink MIMO communication satisfies a threshold.

25. A method of wireless communication performed by a user equipment (UE), the method comprising: determining one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports, the one or more ports being associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communication is based on discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM); and receiving said downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, The intra-time slot DMRS pattern indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

26. The method of claim 25, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is partially allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

27. The method of claim 25, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

28. A method of wireless communication performed by a network node, the method comprising: determining one or more demodulation reference signal (DMRS) scrambling sequences using a low peak-to-average power ratio (PAPR) sequence generator, wherein each of the one or more DMRS scrambling sequences corresponds to a respective port of one or more ports, the one or more ports being associated with downlink multiple-input multiple-output (MIMO) communications, wherein the downlink MIMO communication is based on discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM); and transmitting said downlink MIMO communication including DMRS according to an intra-slot DMRS pattern, The intra-time slot DMRS pattern indicates one or more time domain multiplexing symbols, and each of the one or more time domain multiplexing symbols is at least partially allocated with at least one DMRS scrambling sequence of the one or more DMRS scrambling sequences.

29. The method of claim 28, wherein the intra-slot DMRS pattern indicates that a symbol of the one or more time-domain multiplexing symbols is at least partially allocated with a single DMRS scrambling sequence of the one or more DMRS scrambling sequences.

30. The method of claim 28, wherein the intra-slot DMRS pattern indicates that a symbol in the one or more time-domain multiplexing symbols is completely allocated with a single DMRS scrambling sequence in the one or more DMRS scrambling sequences.

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