User equipment and base station and wireless communication method performed by same

Abstract

A UE and a base station and a wireless communication method performed by the UE and the base station are provided. The wireless communication method performed by a user equipment (UE) comprises: receiving downlink control information (DCI), the downlink control information scheduling a first repetition set of uplink communication according to a first transmission parameter set and scheduling a second repetition set of uplink communication according to a second transmission parameter set; and transmitting the PTRS in the first repetition set and the second repetition set based at least in part on one or more first phase tracking reference signal (PTRS) port and demodulation reference signal (DMRS) port associations of the first repetition set and one or more second PTRS port and DMRS port associations of the second repetition set.

Description

[0001] This application is a divisional application of an invention patent application with an application date of February 24, 2020, application number 202080096081.3, and invention name “Association of phase tracking reference signal ports and demodulation reference signal ports for multi-beam uplink repetition”. Technical Field

[0002] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for association of phase tracking reference signal ports and demodulation reference signal ports for multi-beam uplink repetition. Background Art

[0003] 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 collection of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0004] A wireless communication network may include multiple base stations (BSs) that can support communication for multiple user equipment (UEs). User equipment (UEs) may communicate with a base station (BS) via a downlink and an uplink. A downlink (or forward link) refers to a communication link from a BS to a UE, and an uplink (or reverse link) refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0005] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at municipal, national, regional and even global levels. New Radio (NR), also known as 5G, is a collection of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (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) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) to better integrate with other open standards, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the invention

[0006] In some aspects, a method of wireless communication performed by a user equipment (UE) may include receiving downlink control information (DCI) that schedules a first repetition set of uplink communications based on a first set of transmission parameters, and scheduling a second repetition set of uplink communications based on a second set of transmission parameters; determining one or more first phase tracking reference signal (PTRS) port and demodulation reference signal (DMRS) port associations for the first set repetition, and one or more second PTRS port and DMRS port associations for the second repetition set; and sending the PTRS with the first repetition set and the second repetition set based at least in part on the one or more first phase tracking reference signal PTRS port and demodulation reference signal DMRS port associations of the first repetition set and the one or more second PTRS port and DMRS port associations of the second repetition set.

[0007] In some aspects, a method of wireless communication performed by a base station (BS) may include determining that a first repetition set of uplink communications will be sent by a UE according to a first transmission parameter set, and that a second repetition set of uplink communications will be sent by the UE according to a second transmission parameter set; and sending a DCI that schedules the first repetition set according to the first transmission parameter set and schedules the second repetition set according to the second transmission parameter set, so that the UE can determine one or more first PTRS port and DMRS port associations for the first repetition set, and one or more second PTRS port and DMRS port associations for the second repetition set.

[0008] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: receive a DCI that schedules a first repetition set of uplink communications according to a first set of transmission parameters and a second repetition set of uplink communications according to a second set of transmission parameters; determine one or more first PTRS ports and DMRS port associations for the first repetition set and one or more second PTRS ports and DMRS port associations for the second repetition set; and send the PTRS with the first repetition set and the second repetition set based at least in part on one or more first phase tracking reference signal PTRS ports and demodulation reference signal DMRS port associations of the first repetition set and one or more second PTRS ports and DMRS port associations of the second repetition set.

[0009] In some aspects, a BS for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: determine that a first repetition set of uplink communications will be sent by a UE according to a first set of transmission parameters, and a second repetition set of uplink communications will be sent by the UE according to a second set of transmission parameters; and send a DCI that schedules the first repetition set according to the first set of transmission parameters and schedules the second repetition set according to the second set of transmission parameters to enable the UE to determine one or more first PTRS ports and DMRS port associations for the first repetition set, and one or more second PTRS ports and DMRS port associations for the second repetition set.

[0010] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: receive a DCI that schedules a first repetition set of uplink communications according to a first set of transmission parameters and a second repetition set of uplink communications according to a second set of transmission parameters; determine one or more first PTRS ports and DMRS port associations for the first repetition set and one or more second PTRS ports and DMRS port associations for the second repetition set; and send PTRS in the first repetition set and the second repetition set based at least in part on the one or more first PTRS ports and DMRS port associations and the one or more second PTRS ports and DMRS port associations.

[0011] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: determine that a first repetition set of uplink communications will be sent by the UE according to a first set of transmission parameters, and a second repetition set of uplink communications will be sent by the UE according to a second set of transmission parameters; and send a DCI that schedules the first repetition set according to the first set of transmission parameters and schedules the second repetition set according to the second set of transmission parameters to enable the UE to determine one or more first PTRS ports and DMRS port associations for the first repetition set, and one or more second PTRS ports and DMRS port associations for the second repetition set.

[0012] In some aspects, an apparatus for wireless communication may include: a component for receiving a DCI that schedules a first repetition set of uplink communications based on a first transmission parameter set and a second repetition set of uplink communications based on a second transmission parameter set; a component for determining one or more first PTRS port and DMRS port associations for the first repetition set and one or more second PTRS port and DMRS port associations for the second repetition set; and a component for sending PTRS in the first repetition set and the second repetition set based at least in part on the one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations.

[0013] In some aspects, an apparatus for wireless communication may include: a component for determining that a first repetition set of uplink communications will be sent by a UE according to a first transmission parameter set, and a second repetition set of uplink communications will be sent by the UE according to a second transmission parameter set; and a component for sending a DCI, which schedules the first repetition set according to the first transmission parameter set and schedules the second repetition set according to the second transmission parameter set, so that the UE can determine one or more first PTRS port and DMRS port associations for the first repetition set, and one or more second PTRS port and DMRS port associations for the second repetition set.

[0014] In some aspects, a wireless communication method performed by a user equipment UE includes: receiving downlink control information DCI, which schedules a first repetition set of uplink communications according to a first transmission parameter set, and scheduling a second repetition set of the uplink communications according to a second transmission parameter set; and sending a phase tracking reference signal PTRS in the first repetition set and the second repetition set based at least in part on one or more first PTRS ports and demodulation reference signal DMRS port associations of the first repetition set and one or more second PTRS ports and DMRS port associations of the second repetition set.

[0015] In some aspects, a wireless communication method performed by a base station includes: determining that a first repetition set of uplink communications will be sent by a user equipment UE according to a first transmission parameter set, and that a second repetition set of the uplink communications will be sent by the UE according to a second transmission parameter set; and sending downlink control information DCI, which schedules the first repetition set according to the first transmission parameter set, and schedules the second repetition set according to the second transmission parameter set, wherein the DCI indicates an association between one or more first phase tracking reference signal PTRS ports and demodulation reference signal DMRS ports of the first repetition set, and an association between one or more second PTRS ports and DMRS ports of the second repetition set.

[0016] In some aspects, a user equipment (UE) for wireless communication comprises: one or more memories; and one or more processors operably coupled to the one or more memories, the one or more processors being configured to: receive downlink control information (DCI), which schedules a first repetition set of uplink communications according to a first transmission parameter set, and schedules a second repetition set of the uplink communications according to a second transmission parameter set; and send a phase tracking reference signal (PTRS) in the first repetition set and the second repetition set based at least in part on one or more first PTRS ports and demodulation reference signal (DMRS) port associations of the first repetition set and one or more second PTRS ports and DMRS port associations of the second repetition set.

[0017] In some aspects, a base station for wireless communication comprises: one or more memories; and one or more processors operably coupled to the one or more memories, the one or more processors being configured to: determine that a first repetition set of uplink communications will be sent by a user equipment UE according to a first transmission parameter set, and that a second repetition set of the uplink communications will be sent by the UE according to a second transmission parameter set; and send downlink control information DCI, the downlink control information scheduling the first repetition set according to the first transmission parameter set, and scheduling the second repetition set according to the second transmission parameter set, wherein the DCI indicates an association between one or more first phase tracking reference signal PTRS ports and demodulation reference signal DMRS ports of the first repetition set, and an association between one or more second PTRS ports and DMRS ports of the second repetition set.

[0018] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to and illustrated by the accompanying drawings and description.

[0019] The foregoing has outlined the features and technical advantages of examples according to the present disclosure in a rather broad manner 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. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and methods of operation) and the associated advantages will be better understood from the description below. Each of the accompanying drawings is provided for the purpose of illustration and description and is not intended to be a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to be able to understand the above features of the present disclosure in detail, a more specific description of the content briefly summarized above can be obtained by reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only show certain typical aspects of the present disclosure and should not be considered as limiting its scope, as the description may allow other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0021] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0022] Figure 2is a block diagram conceptually illustrating an example of a base station (BS) communicating with a user equipment (UE) in a wireless communication network according to various aspects of the present disclosure.

[0023] Figure 3 and Figure 4 is a diagram illustrating an example of association of phase tracking reference signal ports and demodulation reference signal ports for multi-beam uplink repetition according to various aspects of the present disclosure.

[0024] Figure 5 is a diagram illustrating example processes performed, for example, by a UE according to various aspects of the present disclosure.

[0025] Figure 6 is a diagram illustrating example processes performed, for example, by a BS according to various aspects of the present disclosure. DETAILED DESCRIPTION

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

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

[0028] Note that although various aspects may be described herein using terminology generally associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied to other generation-based communication systems, such as 5G and later communication systems, including NR technologies.

[0029] Figure 1is a diagram showing a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a plurality of base stations (BSs) 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0030] A BS 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., several kilometers in radius) and may allow unrestricted access to UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0031] In some aspects, the cell may not necessarily be fixed, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.) using any suitable transport network.

[0032] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0033] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0034] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0035] UE 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE 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 or equipment, a biosensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0036] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc. that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120 (such as processor components, memory components, etc.). In some aspects, 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, electrically coupled, etc.

[0037] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can 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 can be deployed.

[0038] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary for communicating with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0039] As mentioned above, providing Figure 1 As an example. Other examples may differ from the Figure 1 The content described.

[0040] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown, which may be Figure 1Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0041] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for the UE based at least in part on the (multiple) MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). If applicable, the transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0042] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may also process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0043] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. If applicable, the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by MIMO detectors 236 (if applicable), and further processed by receive processors 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0044] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the base station 110 may perform one or more techniques related to the association of phase tracking reference signal (PTRS) ports and demodulation reference signal (DMRS) ports for multi-beam uplink repetition, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of may perform or direct e.g. Figure 5 The process of 500 Figure 6 The operations of process 600 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, conversion, interpretation, etc.), may 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 aspects, executing instructions may include running instructions, converting instructions, compiling instructions, interpreting instructions, etc. The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0045] In some aspects, UE 120 may include: components for receiving downlink control information (DCI) that schedules a first repetition set of uplink communications according to a first set of transmission parameters and a second repetition set of uplink communications according to a second set of transmission parameters; components for determining one or more first PTRS ports and DMRS port associations for the first repetition set and one or more second PTRS ports and DMRS port associations for the second repetition set; components for sending PTRS in the first repetition set and the second repetition set based at least in part on the one or more first PTRS ports and DMRS port associations and the one or more second PTRS ports and DMRS port associations, etc. In some aspects, such components may include in conjunction with Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0046] In some aspects, base station 110 may include: a component for determining that a first repetition set of uplink communications will be sent by the UE according to a first transmission parameter set, and a second repetition set of uplink communications will be sent by the UE according to a second transmission parameter set; a component for sending a DCI that schedules the first repetition set according to the first transmission parameter set and schedules the second repetition set according to the second transmission parameter set to enable the UE to determine one or more first PTRS ports and DMRS port associations for the first repetition set and one or more second PTRS ports and DMRS port associations for the second repetition set, etc. In some aspects, such components may include combining Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0047] As mentioned above, providing Figure 2 As an example. Other examples may differ from the Figure 2 The content described.

[0048] Figure 3 is a diagram illustrating an example 300 of association of PTRS ports and DMRS ports for multi-beam uplink repetition in accordance with various aspects of the present disclosure.

[0049] PTRS can be used to correct phase noise (e.g., oscillator phase noise), particularly for millimeter wave communications. PTRS can be sent on a layer mapped to a specific DMRS port (such as a DMRS port associated with the strongest signal). In some cases, the UE can identify multiple PTRS ports and / or multiple DMRS ports that can be used. Therefore, the DCI scheduling uplink communications can indicate one or more PTRS port and DMRS port associations, each association identifying a specific DMRS port to be used to send a specific PTRS.

[0050] In a non-codebook-based uplink, the UE may identify one or more PTRS ports based at least in part on a sounding reference signal (SRS) resource indicator (SRI). For example, the SRI may identify one or more SRS resources, and each SRS resource may be configured with a specific PTRS port. In a codebook-based uplink, the UE may identify one or more PTRS ports based at least in part on a transmit precoding matrix indicator (TPMI) and the number of layers indicated, as described below. In addition, the UE may be configured to use a specific maximum number of PTRS ports, which may be one or two. When the UE is fully coherent, the UE may be configured to use one PTRS port. When the UE is non-coherent or partially coherent, the UE may be configured to use a maximum of two PTRS ports (e.g., when the transmission uses a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform, the UE may be configured to use two PTRS ports).

[0051] If the UE recognizes a single PTRS port (e.g., PTRS port 0), the DCI may indicate an index value of mapping 305 to identify the DMRS port associated with the PTRS port (wherein the first scheduled DMRS port may refer to the DMRS port mapped to the first layer to be transmitted, etc.). If the UE recognizes multiple PTRS ports (e.g., PTRS port 0 and PTRS port 1), the DCI may indicate two index values ​​of mapping 310 to identify the corresponding DMRS ports associated with the multiple PTRS ports.

[0052] As shown in mapping 310, a first index value (i.e., a most significant bit (MSB)) can identify a DMRS port in a set of DMRS ports that share a first PTRS port (e.g., PTRS port 0), and a second index value (i.e., a least significant bit (LSB)) can identify a DMRS port in a set of DMRS ports that share a second PTRS port (e.g., PTRS port 1). In a non-codebook-based uplink, DMRS ports and SRS resources have a one-to-one mapping, so DMRS ports mapped to SRS resources configured with the same PTRS port can share a PTRS port. In a codebook-based uplink, a first antenna set (e.g., antennas 0 and 2) of a precoding matrix (identified by the TPMI and the indicated number of layers) can be associated with the first PTRS port (e.g., PTRS port 0), and a second antenna set (e.g., antennas 1 and 3) of a precoding matrix can be associated with a second PTRS port (e.g., PTRS port 1). Therefore, DMRS ports of a layer mapped to a precoding matrix to be transmitted using antennas in a specific antenna set may share a PTRS port associated with the specific antenna set.

[0053] In some wireless telecommunication systems, a UE may send multiple repetitions of uplink communications that are received by different TRPs, antenna panels, antennas, etc. of a BS. This may improve the reliability and performance of the uplink communications. In some cases, the UE may determine (e.g., based at least in part on the DCI) that the same PTRS port and DMRS port associations are used for the multiple repetitions. However, the performance of the PTRS is improved when the PTRS is sent on the DMRS port associated with the strongest signal, which may not be the same DMRS port for different receivers of the multiple repetitions.

[0054] Some techniques and apparatus described herein enable a UE to determine corresponding PTRS ports and DMRS port associations for multiple repetition sets of uplink communications to be sent using different transmission parameters (e.g., using different beams). In this way, the DMRS port indicated for the repetition set associated with the strongest signal can be used to transmit the PTRS for the repetition set, thereby improving the performance of the PTRS and the performance of the repetition set.

[0055] As mentioned above, providing Figure 3 As an example. Other examples may differ from the Figure 3 The content described.

[0056] Figure 4 4 is a diagram illustrating an example 400 of association of PTRS ports and DMRS ports for multi-beam uplink repetition according to various aspects of the present disclosure. Figure 4 As shown, UE 120 and BS 110 may communicate in conjunction with uplink communications in a physical uplink shared channel (PUSCH).

[0057] As indicated by reference numeral 405, BS 110 may send DCI, and UE 120 may receive the DCI. The DCI may schedule multiple repetitions (i.e., PUSCH transmission opportunities) of uplink communications for UE 120. For example, the DCI may schedule a first repetition set (set 1) of uplink communications according to a first set of transmission parameters, and a second repetition set (set 2) of uplink communications according to a second set of transmission parameters. That is, the DCI may provide uplink grants for the first and second repetition sets, and may indicate the corresponding transmission parameter sets for the first and second repetition sets. In some aspects, the repetitions may have multiple layers.

[0058] In some aspects, the first transmission parameter set and the second transmission parameter set may be different. For example, the first transmission parameter set may indicate one or more of a first uplink beam (e.g., spatial parameters such as quasi co-location (QCL) parameters, transmission configuration indicator (TCI) status, spatial domain filter, etc.), a first uplink power control parameter set, or a first TPMI, and the second transmission parameter set may indicate one or more of a second uplink beam (e.g., spatial parameters such as QCL parameters, TCI status, spatial domain filter, etc.), a second uplink power control parameter set, or a second TPMI.

[0059] In some aspects, the DCI may indicate (e.g., in the antenna port field of the DCI) the same or corresponding set of DMRS ports for the first and second repetition sets. In some aspects, (e.g., in a non-codebook based uplink) the DCI may indicate the same or corresponding SRI for the first and second repetition sets. In some aspects, (e.g., in a codebook based uplink) the DCI may indicate the same or corresponding TPMI and number of layers (e.g., precoding matrix) for the first and second repetition sets. As in conjunction with Figure 3 As described, UE 120 may identify one or more PTRS ports for the first repetition set and the second repetition set based at least in part on the SRI and / or TPMI and the number of layers indicated by the DCI. In some aspects, UE 120 may identify different numbers of PTRS ports for the first and second repetition sets.

[0060] In some aspects, the DCI may indicate one or more PTRS port and DMRS port association indications, which identify one or more PTRS port and DMRS port associations. The PTRS port and DMRS port association indication may be referred to herein as a PTRS-DMRS association indication, and the PTRS port and DMRS port association may be referred to herein as a PTRS-DMRS association. The DCI may identify one or more PTRS-DMRS associations in the PTRS-DMRS association field. Therefore, the value of the PTRS-DMRS association field may be a PTRS-DMRS association indication.

[0061] In some aspects, the PTRS-DMRS association field may be allocated two bits of the DCI, and the DCI may indicate a single PTRS-DMRS association indication. When the UE 120 identifies a single PTRS port, the single PTRS-DMRS association indication may indicate a single index value (e.g., of mapping 305), or when the UE 120 identifies multiple PTRS ports, the single PTRS-DMRS association indication may indicate two index values ​​(e.g., of mapping 310). In some aspects, the PTRS-DMRS association field may be allocated four bits of the DCI, and the DCI may indicate the corresponding PTRS-DMRS association indication for the repetition set. As described above, each corresponding PTRS-DMRS association indication may be a single PTRS-DMRS association indication. In some aspects, when the repetition has a maximum of two layers (e.g., exactly two layers), the PTRS-DMRS association field may be allocated two bits of the DCI, which are reused to indicate the corresponding PTRS-DMRS associations for the first and second repetition sets.

[0062] As indicated by reference numeral 410, UE 120 may determine PTRS-DMRS associations for the first repetition set and the second repetition set. For example, UE 120 may determine one or more first PTRS-DMRS associations (PTRS-DMRS association 1) for the first repetition set and one or more second PTRS-DMRS associations (PTRS-DMRS association 2) for the second repetition set.

[0063] In some aspects, as described above, UE 120 may determine one or more first PTRS-DMRS associations and one or more second PTRS-DMRS associations based at least in part on a single PTRS-DMRS association indication of the DCI (e.g., using two bits of a PTRS-DMRS association field of the DCI). For example, the single PTRS-DMRS association indication may be an index value identifying a PTRS-DMRS association (e.g., according to mapping 305) (e.g., when UE 120 identifies a single PTRS port), or two index values ​​identifying two PTRS-DMRS associations (e.g., when UE 120 identifies multiple PTRS ports) (e.g., according to mapping 310).

[0064] Thus, UE 120 may determine one or more first PTRS-DMRS associations for a first repetition set based at least in part on a single PTRS-DMRS association indication, and may determine one or more second PTRS-DMRS associations for a second repetition set based at least in part on a single PTRS-DMRS association indication. A single PTRS-DMRS association indication (e.g., a single index value of mapping 305 or two index values ​​of mapping 310) may identify different PTRS-DMRS associations for the first and second repetition sets, because the first and second repetition sets may use different numbers of PTRS ports, different DMRS port sets may be indicated for the first and second repetition sets, and so on.

[0065] Thus, for example, UE 120 may determine one or two PTRS-DMRS associations for a first repetition set based at least in part on a single PTRS-DMRS association indication, and determine one or two PTRS-DMRS associations for a second repetition set based at least in part on a single PTRS-DMRS association indication. For example, the single PTRS-DMRS association indication may have a value of 01, UE 120 may identify one PTRS port for the first repetition set, and UE 120 may identify two PTRS ports for the second repetition set. In this example, UE 120 may determine one PTRS-DMRS association for the first repetition set based on a DMRS port association of 01 (e.g., a value of 1) in mapping 305, and determine two PTRS-DMRS associations for the second repetition set based on a DMRS port association of 01 (e.g., an MSB value of 0 and an LSB value of 1) in mapping 310.

[0066] In some aspects, when the DCI indicates one or more different transmission parameters for a first repetition set and a second repetition set, the UE 120 may determine one or more first PTRS-DMRS associations for the first repetition set and one or more second PTRS-DMRS associations for the second repetition set using a single PTRS-DMRS association indication. For example, the DCI may indicate a first TPMI or a first number of layers (e.g., a first precoding matrix) for the first repetition set, and a second TPMI or a second number of layers (e.g., a second precoding matrix) for the second repetition set. As another example, the DCI may indicate a first set of DMRS ports for the first repetition set, and a second set of DMRS ports for the second repetition set. As yet another example, the DCI may indicate a first set of SRS resources for the first repetition set (e.g., based on a first SRI), and indicate a second set of SRS resources for the second repetition set (e.g., based on a second SRI).

[0067] In some aspects, as described above, UE 120 may determine one or more first PTRS-DMRS associations and one or more second PTRS-DMRS associations based at least in part on corresponding PTRS-DMRS association indications of the DCI (e.g., using four bits of the PTRS-DMRS association field of the DCI). In this example, the first two bits may indicate a single PTRS-DMRS association indication (e.g., a single index value of mapping 305 or two index values ​​of mapping 310) that identifies one or more PTRS-DMRS associations for the first repetition set, and the second two bits may indicate a single PTRS-DMRS association indication (e.g., a single index value of mapping 305 or two index values ​​of mapping 310) that identifies one or more PTRS-DMRS associations for the second repetition set. For example, the first two bits of the single PTRS-DMRS association indication may identify one or two PTRS-DMRS associations for the first repetition set based at least in part on whether UE 120 identifies one or two PTRS ports for the first repetition set, and so on.

[0068] In some aspects, as described above, UE 120 may adopt an interpretation of the two bits of the PTRS-DMRS association field of the DCI that is different from that described above in order to determine one or more first PTRS-DMRS associations and one or more second PTRS-DMRS associations. In this example, the first bit of the PTRS-DMRS association field of the DCI may be used to indicate the one or more first PTRS-DMRS associations, and the second bit of the PTRS-DMRS association field of the DCI may be used to indicate the one or more second PTRS-DMRS associations. In some aspects, UE 120 may adopt this interpretation when the repetition has a maximum of two layers. For example, UE 120 may adopt this interpretation when indicating that one or more DMRS port sets for the first and second repetition sets include a maximum of two DMRS ports per DMRS port set.

[0069] In some aspects, the value of the first bit may be based at least in part on a first number of PTRS ports that UE 120 has identified for the first repetition set, and the value of the second bit may be based at least in part on a second number of PTRS ports that UE 120 has identified for the second repetition set. Figure 3As described, the UE 120 may identify the number of PTRS ports to be transmitted by the repetition set based at least in part on the SRS resources indicated by the DCI for the repetition set (in the case of a non-codebook based uplink) or the TPMI and number of layers indicated by the DCI for the repetition set (in the case of a codebook based uplink). In some aspects, the UE 120 may determine the same or different number of PTRS ports for the first and second repetition sets based at least in part on whether the DCI indicates the same or different SRS resources or TPMI and number of layers for the first and second repetition sets.

[0070] In some aspects, if UE 120 is non-coherent or partially coherent, the number of PTRS ports may be one or two PTRS ports. In some aspects, if UE 120 is fully coherent, the number of PTRS ports may be one PTRS port.

[0071] In some aspects, if the UE 120 identifies one PTRS port for the first repetition set, the value of the first bit may indicate whether the one PTRS port is associated with the first DMRS port or the second DMRS port in the set of DMRS ports indicated for the first repetition set (which may include two DMRS ports, as described above). Similarly, if the UE 120 identifies one PTRS port for the second repetition set, the value of the second bit may indicate whether the one PTRS port is associated with the first DMRS port or the second DMRS port in the set of DMRS ports indicated for the second repetition set (which may include two DMRS ports, as described above).

[0072] In some aspects, if UE 120 identifies two PTRS ports for a first repetition set, UE 120 may determine a mapping of the two PTRS ports to a set of DMRS ports indicating the first repetition set (which may include two DMRS ports, as described above). The mapping may be determined (e.g., uniquely determined) by an implementation of UE 120. Similarly, if UE 120 identifies two PTRS ports for a second repetition set, UE 120 may determine (e.g., by an implementation of UE 120) a mapping of the two PTRS ports to a set of DMRS ports indicating the second repetition set (which may include two DMRS ports, as described above).

[0073] As indicated by reference numeral 415, the UE 120 may transmit and the BS 110 may receive a first repetition set of uplink communications and a second repetition set of uplink communications. For example, the UE 120 may transmit the first repetition set based at least in part on one or more first PTRS-DMRS associations determined by the UE 120, and transmit the second repetition set based at least in part on one or more second PTRS-DMRS associations determined by the UE 120. That is, the UE 120 may transmit one or more first PTRSs in the first repetition set using one or more DMRS ports according to the one or more first PTRS-DMRS associations (identified by the UE 120 for the first repetition set, as described above), and transmit one or more second PTRSs in the second repetition set using one or more DMRS ports according to the one or more second PTRS-DMRS associations (identified by the UE 120 for the second repetition set, as described above). In this way, the performance of PTRS and uplink communications may be improved.

[0074] In some aspects, UE 120 may send a first repetition set to a first TRP, antenna panel, antenna, etc. of BS 110 and a second repetition set to a second TRP, antenna panel, antenna, etc. of BS 110. In some aspects, the first TRP, antenna panel, antenna, etc. and the second TRP, antenna panel, antenna, etc. may be associated with different BSs.

[0075] As mentioned above, providing Figure 4 As an example. Other examples may differ from Figure 4 The content described.

[0076] Figure 5 is a diagram illustrating an example process 500, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 500 is an example of operations performed by a UE (eg, UE 120, etc.) related to association of PTRS ports and DMRS ports for multi-beam uplink repetition.

[0077] like Figure 5 As shown, in some aspects, process 500 may include receiving DCI that schedules a first repetition set of uplink communications according to a first set of transmission parameters and a second repetition set of uplink communications according to a second set of transmission parameters (block 510). For example, as described above, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive DCI that schedules a first repetition set of uplink communications according to a first set of transmission parameters and a second repetition set of uplink communications according to a second set of transmission parameters.

[0078] like Figure 5 As further shown, in some aspects, process 500 may include determining one or more first PTRS port and DMRS port associations for a first repetition set, and one or more second PTRS port and DMRS port associations for a second repetition set (block 520). For example, as described above, the UE (e.g., using controller / processor 280, etc.) may determine one or more first PTRS port and DMRS port associations for a first repetition set, and one or more second PTRS port and DMRS port associations for a second repetition set.

[0079] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include transmitting PTRS in a first repetition set and a second repetition set based at least in part on one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations (block 530). For example, as described above, the UE (e.g., using controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) may transmit PTRS in a first repetition set and a second repetition set based at least in part on one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations.

[0080] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or described in conjunction with one or more other processes described elsewhere herein.

[0081] In a first aspect, the first repetition set and the second repetition set are scheduled to have more than one layer.

[0082] In a second aspect, alone or in combination with the first aspect, a first transmission parameter set indicates one or more of a first uplink beam, a first spatial domain filter, a first uplink power control parameter set, or a first TPMI, and a second transmission parameter set indicates one or more of a second uplink beam, a second spatial domain filter, a second uplink power control parameter set, or a second TPMI.

[0083] In a third aspect, alone or in combination with one or more of the first and second aspects, one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations are determined at least in part based on a single PTRS port and DMRS port association indication of a DCI. In a fourth aspect, alone or in combination with one or more of the first to third aspects, one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations are determined at least in part based on a single PTRS port and DMRS port association indication when at least one of the following occurs: the DCI indicates a first TPMI or a first number of layers for a first repetition set and a second TPMI or a second number of layers for a second repetition set; the DCI indicates a first DMRS port set for the first repetition set and a second DMRS port set for the second repetition set; or the DCI indicates a first SRS resource for the first repetition set and a second SRS resource for the second repetition set.

[0084] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations are determined at least in part based on corresponding PTRS port and DMRS port association indications of the DCI.

[0085] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, a first bit of a field of the DCI is used to indicate that one or more first PTRS ports are associated with a DMRS port, and a second bit of a field of the DCI is used to indicate that one or more second PTRS ports are associated with a DMRS port. In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, a first repetition set and a second repetition set are scheduled with a maximum of two layers.

[0086] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the value of the first bit is based at least in part on a first number of PTRS ports to be used for the first repetition set, and the value of the second bit is based at least in part on a second number of PTRS ports to be used for the second repetition set. In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the value of the first bit (when the first number of PTRS ports is one) or the value of the second bit (when the second number of PTRS ports is one) indicates whether a single PTRS port is associated with a first DMRS port or a second DMRS port. In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, when the first number of PTRS ports is two, the association of one or more first PTRS ports with the DMRS port is determined without reference to the value of the first bit, and when the second number of PTRS ports is two, the association of one or more second PTRS ports with the DMRS port is determined without reference to the value of the second bit.

[0087] although Figure 5 Example blocks of process 500 are shown, but in some aspects process 500 may include additional blocks, fewer blocks, different blocks, or different Figure 5 Additionally or alternatively, two or more blocks of process 500 may be executed in parallel.

[0088] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a BS, in accordance with various aspects of the present disclosure. Example process 600 is an example of operations performed by a BS (eg, BS 110, etc.) related to association of PTRS ports and DMRS ports for multi-beam uplink repetition.

[0089] like Figure 6 As shown, in some aspects, process 600 may include determining that a first repetition set of uplink communications is to be sent by the UE according to a first set of transmission parameters, and a second repetition set of uplink communications is to be sent by the UE according to a second set of transmission parameters (block 610). For example, as described above, the BS (e.g., using controller / processor 240, etc.) may determine that the first repetition set of uplink communications is to be sent by the UE according to the first set of transmission parameters, and the second repetition set of uplink communications is to be sent by the UE according to the second set of transmission parameters.

[0090] like Figure 6As further shown in FIG. 6 , in some aspects, process 600 may include sending a DCI that schedules a first repetition set according to a first set of transmission parameters and a second repetition set according to a second set of transmission parameters to enable a UE to determine one or more first PTRS ports and DMRS port associations for the first repetition set and one or more second PTRS ports and DMRS port associations for the second repetition set (block 620). For example, a BS (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may send a DCI that schedules the first repetition set according to the first set of transmission parameters and a second repetition set according to the second set of transmission parameters to enable a UE to determine one or more first PTRS ports and DMRS port associations for the first repetition set and one or more second PTRS ports and DMRS port associations for the second repetition set, as described above.

[0091] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0092] In a first aspect, the first repetition set and the second repetition set are scheduled to have more than one layer.

[0093] In a second aspect, alone or in combination with the first aspect, a first transmission parameter set indicates one or more of a first uplink beam, a first spatial domain filter, a first uplink power control parameter set, or a first TPMI, and a second transmission parameter set indicates one or more of a second uplink beam, a second spatial domain filter, a second uplink power control parameter set, or a second TPMI.

[0094] In a third aspect, alone or in combination with one or more of the first and second aspects, one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations are determined at least in part based on a single PTRS port and DMRS port association indication of a DCI. In a fourth aspect, alone or in combination with one or more of the first to third aspects, one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations are determined at least in part based on a single PTRS port and DMRS port association indication when at least one of the following occurs: the DCI indicates a first TPMI or a first number of layers for a first repetition set and a second TPMI or a second number of layers for a second repetition set; the DCI indicates a first DMRS port set for the first repetition set and a second DMRS port set for the second repetition set; or the DCI indicates a first SRS resource for the first repetition set and a second SRS resource for the second repetition set.

[0095] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, one or more first PTRS port and DMRS port associations and one or more second PTRS port and DMRS port associations are determined at least in part based on corresponding PTRS port and DMRS port association indications of the DCI.

[0096] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, a first bit of a field of the DCI is used to indicate that one or more first PTRS ports are associated with a DMRS port, and a second bit of a field of the DCI is used to indicate that one or more second PTRS ports are associated with a DMRS port. In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, a first repetition set and a second repetition set are scheduled with a maximum of two layers.

[0097] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the value of the first bit is based at least in part on a first number of PTRS ports to be used for the first repetition set, and the value of the second bit is based at least in part on a second number of PTRS ports to be used for the second repetition set. In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the value of the first bit (when the first number of PTRS ports is one) or the value of the second bit (when the second number of PTRS ports is one) indicates whether a single PTRS port is associated with a first DMRS port or a second DMRS port. In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, when the first number of PTRS ports is two, one or more first PTRS ports and DMRS port associations will be determined without reference to the value of the first bit, and when the second number of PTRS ports is two, one or more second PTRS ports and DMRS port associations will be determined without reference to the value of the second bit.

[0098] although Figure 6 Example blocks of process 600 are shown, but in some aspects process 600 may include additional blocks, fewer blocks, different blocks, or different Figure 6 Additionally or alternatively, two or more blocks of process 600 may be performed in parallel.

[0099] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the various aspects to the precise forms disclosed. Modifications and variations may be made based on the above disclosure, or may be acquired from the practice of various aspects.

[0100] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0101] As used herein, satisfying a threshold may refer to a value 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, and / or the like, depending on the context.

[0102] It is apparent that the systems and / or methods described herein can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting in any way. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, and it is understood that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0103] Even if a particular combination of features is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in a manner that is not specifically recorded in the claims and / or specifically disclosed in the specification. Although each dependent claim listed below may be directly subordinate to only one claim, the disclosure of the various aspects includes the combination of each dependent claim with each other claim in the claim set. The phrase referring to "at least one of" a list of items refers to any combination of those items, including a single member. As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other arrangement of a, b, and c).

[0104] None of the elements, actions or instructions used herein should be interpreted as key or necessary, unless clearly described as such. In addition, as used herein, the articles "one" and "an" are intended to include one or more projects, and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (e.g., related projects, unrelated projects, combinations of related projects and unrelated projects and / or the like), and can be used interchangeably with "one or more". In the case of only expecting one project, the phrase "only one" or similar language is used. In addition, as used herein, the terms "has", "have", "having" and / or similar terms are intended to be open terms. In addition, unless otherwise expressly stated, the phrase "based on" is intended to mean "based at least in part on".

Claims

1. A wireless communication method performed by a user equipment UE, comprising: receiving downlink control information DCI, the downlink control information scheduling a first repetition set of uplink communications according to a first set of transmission parameters and scheduling a second repetition set of the uplink communications according to a second set of transmission parameters; as well as The PTRS is sent in the first repetition set and the second repetition set based at least in part on one or more first phase tracking reference signal PTRS port and demodulation reference signal DMRS port associations of the first repetition set and one or more second PTRS port and DMRS port associations of the second repetition set.

2. The method according to claim 1, wherein: The first repetition set is scheduled with more than one layer, and the second repetition set is scheduled with more than one layer.

3. The method according to claim 1, wherein: The first transmission parameter set indicates one or more of a first uplink beam, a first spatial domain filter, a first uplink power control parameter set, or a first transmit precoding matrix indicator TPMI, and the second transmission parameter set indicates one or more of a second uplink beam, a second spatial domain filter, a second uplink power control parameter set, or a second TPMI.

4. The method according to claim 1, wherein: The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on a single PTRS port and DMRS port association indication of the DCI.

5. The method according to claim 4, wherein: When at least one of the following occurs: The DCI indicates a first transmit precoding matrix indicator TPMI or a first layer number for the first repetition set, and a second TPMI or a second layer number for the second repetition set, The DCI indicates a first DMRS port set for the first repetition set and a second DMRS port set for the second repetition set, or The DCI indicates a first sounding reference signal (SRS) resource for the first repetition set and a second SRS resource for the second repetition set, The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on a single PTRS port and DMRS port association indication.

6. The method according to claim 1, wherein: The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on respective PTRS port and DMRS port association indications of the DCI.

7. The method according to claim 1, wherein: A first bit of the field of the DCI is used to indicate that the one or more first PTRS ports are associated with a DMRS port, and a second bit of the field of the DCI is used to indicate that the one or more second PTRS ports are associated with a DMRS port.

8. The method according to claim 7, wherein: The first repetition set is scheduled with a maximum of two layers, and the second repetition set is scheduled with a maximum of two layers.

9. The method according to claim 7, wherein: The value of the first bit is based at least in part on a first number of PTRS ports to be used for the first repetition set, and the value of the second bit is based at least in part on a second number of PTRS ports to be used for the second repetition set.

10. The method according to claim 9, wherein: The value of the first bit when the first number of PTRS ports is one, or the value of the second bit when the second number of PTRS ports is one, indicates whether a single PTRS port is associated with a first DMRS port or a second DMRS port.

11. The method according to claim 9, wherein: When the first number of PTRS ports is two, the association between the one or more first PTRS ports and the DMRS port is determined without reference to the value of the first bit, and when the second number of PTRS ports is two, the association between the one or more second PTRS ports and the DMRS port is determined without reference to the value of the second bit.

12. A wireless communication method performed by a base station, comprising: Determining that a first repetition set of uplink communications is to be sent by a user equipment UE according to a first set of transmission parameters, and that a second repetition set of the uplink communications is to be sent by the UE according to a second set of transmission parameters; as well as Downlink control information DCI is sent, wherein the downlink control information schedules the first repetition set according to the first transmission parameter set, and schedules the second repetition set according to the second transmission parameter set, wherein the DCI indicates an association between one or more first phase tracking reference signal PTRS ports and demodulation reference signal DMRS ports of the first repetition set, and an association between one or more second PTRS ports and DMRS ports of the second repetition set.

13. The method according to claim 12, wherein: The first repetition set is scheduled with more than one layer, and the second repetition set is scheduled with more than one layer.

14. The method according to claim 12, wherein: The first transmission parameter set indicates one or more of a first uplink beam, a first spatial domain filter, a first uplink power control parameter set, or a first transmit precoding matrix indicator TPMI, and the second transmission parameter set indicates one or more of a second uplink beam, a second spatial domain filter, a second uplink power control parameter set, or a second TPMI.

15. The method according to claim 12, wherein: The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on a single PTRS port and DMRS port association indication of the DCI.

16. The method according to claim 15, wherein: When at least one of the following occurs: The DCI indicates a first transmit precoding matrix indicator TPMI or a first layer number for the first repetition set, and a second TPMI or a second layer number for the second repetition set, The DCI indicates a first DMRS port set for the first repetition set and a second DMRS port set for the second repetition set, or The DCI indicates a first sounding reference signal (SRS) resource for the first repetition set and a second SRS resource for the second repetition set, The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on the single PTRS port and DMRS port association indication.

17. The method according to claim 12, wherein: The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on respective PTRS port and DMRS port association indications of the DCI.

18. The method according to claim 12, wherein: A first bit of the field of the DCI is used to indicate that the one or more first PTRS ports are associated with a DMRS port, and a second bit of the field of the DCI is used to indicate that the one or more second PTRS ports are associated with a DMRS port.

19. The method according to claim 18, wherein: The first repetition set and the second repetition set are scheduled in a maximum of two layers.

20. The method according to claim 18, wherein: The value of the first bit is based at least in part on a first number of PTRS ports to be used for the first repetition set, and the value of the second bit is based at least in part on a second number of PTRS ports to be used for the second repetition set.

21. The method according to claim 20, wherein: The value of the first bit when the first number of PTRS ports is one, or the value of the second bit when the second number of PTRS ports is one, indicates whether a single PTRS port is associated with a first DMRS port or a second DMRS port.

22. The method according to claim 20, wherein: When the first number of PTRS ports is two, the one or more first PTRS port and DMRS port associations will be determined without reference to the value of the first bit, and when the second number of PTRS ports is two, the one or more second PTRS port and DMRS port associations will be determined without reference to the value of the second bit.

23. The method according to claim 1, wherein: The number of PTRS transmitted in the first repetition set or the second repetition set is based at least in part on a sounding reference signal (SRS) resource indicated by the DCI.

24. A user equipment UE for wireless communication, comprising: one or more memories; and One or more processors operably coupled to the one or more memories, the one or more processors configured to: receiving downlink control information DCI, the downlink control information scheduling a first repetition set of uplink communications according to a first set of transmission parameters and scheduling a second repetition set of the uplink communications according to a second set of transmission parameters; as well as The PTRS is sent in the first repetition set and the second repetition set based at least in part on one or more first phase tracking reference signal PTRS port and demodulation reference signal DMRS port associations of the first repetition set and one or more second PTRS port and DMRS port associations of the second repetition set.

25. The UE according to claim 24, wherein: The first transmission parameter set indicates one or more of a first uplink beam, a first spatial domain filter, a first uplink power control parameter set, or a first transmit precoding matrix indicator TPMI, and the second transmission parameter set indicates one or more of a second uplink beam, a second spatial domain filter, a second uplink power control parameter set, or a second TPMI.

26. The UE according to claim 24, wherein: The one or more first PTRS port and DMRS port associations and the one or more second PTRS port and DMRS port associations are based at least in part on respective PTRS port and DMRS port association indications of the DCI.

27. The UE according to claim 24, wherein: A first bit of the field of the DCI is used to indicate that the one or more first PTRS ports are associated with a DMRS port, and a second bit of the field of the DCI is used to indicate that the one or more second PTRS ports are associated with a DMRS port.

28. The UE according to claim 24, wherein: The first repetition set is scheduled with a maximum of two layers, and the second repetition set is scheduled with a maximum of two layers.

29. The UE according to claim 24, wherein: The number of PTRS transmitted in the first repetition set or the second repetition set is based at least in part on a sounding reference signal (SRS) resource indicated by the DCI.

30. A base station for wireless communication, comprising: one or more memories; and One or more processors operably coupled to the one or more memories, the one or more processors configured to: Determining that a first repetition set of uplink communications is to be sent by a user equipment UE according to a first set of transmission parameters, and that a second repetition set of the uplink communications is to be sent by the UE according to a second set of transmission parameters; as well as Downlink control information DCI is sent, wherein the downlink control information schedules the first repetition set according to the first transmission parameter set, and schedules the second repetition set according to the second transmission parameter set, wherein the DCI indicates an association between one or more first phase tracking reference signal PTRS ports and demodulation reference signal DMRS ports of the first repetition set, and an association between one or more second PTRS ports and DMRS ports of the second repetition set.

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