Terminal devices, network devices, and methods

Abstract

The present invention provides a method, apparatus, and medium for simultaneous transmission across multiple panels. [Solution] A method according to an embodiment of the present disclosure includes a terminal device receiving a DCI (downlink control information) message for scheduling at least one uplink transmission, wherein the DCI message includes first information relating to a sounding reference signal (SRS) resource associated with the at least one uplink transmission, second information relating to the precoding information associated with the at least one uplink transmission, and third information indicating the transmission mode of the at least one uplink transmission, and transmitting the at least one uplink transmission to a network based on the DCI message.

Description

Technical Field

[0001] Exemplary embodiments of the present disclosure relate generally to the field of communication technologies, and more particularly, to methods, apparatuses, and media for simultaneous transmission across multi-panels (StxMP).

Background Art

[0002] Codebook-based physical uplink shared channel (PUSCH) transmission is a conventional uplink transmission scheme. When scheduling codebook-based PUSCH transmission, the network device may determine a transmit precoding matrix index (TPMI) based on sounding reference signal (SRS) measurements and a pre-defined codebook, and indicate it to a terminal device (e.g., a user equipment (UE)). Further, it has been proposed that the terminal device may be deployed to have two or more panels. In the conventional assumption, even if the terminal device has multiple panels, it can only transmit with one panel at a time.

[0003] To improve transmission performance, it is required to support STxMP technology. Although some discussions have been made on STxMP, there are still a number of unresolved issues that need to be discussed to better support codebook-based PUSCH STxMP.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Generally, exemplary embodiments of the present disclosure provide a method, an apparatus, and a computer storage medium for communication. [Means for solving the problem]

[0005] In a first embodiment, a method of communication is provided. The method includes receiving a downlink control information (DCI) message for scheduling at least one uplink transmission over at least two of the multiple antenna port sets in a terminal device deployed to have a plurality of antenna port sets, wherein the DCI message includes first information relating to an SRS resource associated with the at least one uplink transmission, second information relating to precoding information associated with the at least one uplink transmission, and third information indicating the transmission mode of the at least one uplink transmission, and transmitting the at least one uplink transmission over at least two of the multiple antenna port sets to a network based on the DCI message.

[0006] In a second embodiment, a method of communication is provided. The method includes, in a terminal device, transmitting full-power transmit capability information to a network indicating panel-level full-power transmit capability and port-level full-power transmit capability within the panel; receiving from the network a setting indicating TPMI or a combination of TPMI for at least one uplink transmit; and controlling the transmit power of the at least one uplink transmit based on the full-power transmit capability information and the indicated TPMI or combination of TPMI.

[0007] In a third embodiment, a method of communication is provided. The method includes a terminal device receiving transmission information from a network device, which includes: first waveform information used by the terminal device to perform at least one uplink transmission and contained in a DCI message or a media-access-control (MAC) control element (CE) message; second waveform information used by the terminal device when performing the most recent SRS transmission; and precoding information used by the terminal device to perform the at least one uplink transmission; and determining TPMI or a combination of TPMI based on the transmission information.

[0008] A fourth embodiment provides a method of communication, the method comprising: a network device transmitting a DCI message to a terminal device deployed to have a plurality of antenna port sets for scheduling at least one uplink transmission over at least two of the plurality of antenna port sets, wherein the DCI message comprises first information relating to an SRS resource associated with the at least one uplink transmission, second information relating to the precoding information associated with the at least one uplink transmission, and third information indicating the transmission mode of the at least one uplink transmission; and receiving the at least one uplink transmission transmitted over at least two of the plurality of antenna port sets from the terminal device based on the DCI message.

[0009] A fifth embodiment provides a method of communication. The method includes a network device receiving transmission information from a terminal device, which includes a first waveform information used by the terminal device to perform at least one uplink transmission and contained in a DCI message or MAC CE message, a second waveform information used by the terminal device when performing the most recent SRS transmission, and precoding information used by the terminal device to perform at least one uplink transmission; and determining TPMI or a combination of TPMI based on the transmission information.

[0010] In a sixth embodiment, a terminal device is provided, comprising a circuit configured to perform the method according to the first embodiment of the present disclosure.

[0011] In a seventh embodiment, a terminal device is provided. The terminal device comprises a circuit configured to perform the method according to the second embodiment of the present disclosure.

[0012] In an eighth embodiment, a terminal device is provided. The terminal device comprises a circuit configured to perform the method according to the third embodiment of the present disclosure.

[0013] In a ninth embodiment, a network device is provided. The network device comprises a circuit configured to perform the method according to the fourth embodiment of the present disclosure.

[0014] In a tenth embodiment, a network device is provided. The network device comprises a circuit configured to perform the method according to the fifth embodiment of the present disclosure.

[0015] In an eleventh embodiment, a computer-readable medium storing instructions is provided. When the instructions are executed on at least one processor, the instructions cause the at least one processor to perform the method described in any one of the first to fifth embodiments of the present disclosure.

[0016] It should be understood that the summary section of the invention is not intended to identify the important or fundamental features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure should be readily understood from the following description.

Brief Description of the Drawings

[0017] The above and other objects, features and advantages of the present disclosure will be further clarified by describing some embodiments of the present disclosure in more detail in the accompanying drawings.

[0018] [Figure 1A] It is a diagram showing a signaling flow for scheduling CB-based PUSCH transmission in related solutions.

[0019] [Figure 1B] It is a diagram showing an example of a coherent type in related solutions.

[0020] [Figure 1C] It is a diagram showing an example of a full power mode in related solutions.

[0021] [Figure 2A] It is a diagram showing an exemplary communication network in which embodiments of the present disclosure can be implemented. [Figure 2B] It is a diagram showing an exemplary communication network in which embodiments of the present disclosure can be implemented. [Figure 2C] It is a diagram showing an exemplary communication network in which embodiments of the present disclosure can be implemented. [[ID=,39]]

[0022] [Figure 3] It is a diagram showing a signaling flow for communication according to some exemplary embodiments of the present disclosure.

[0023] [Figure 4A] It is a diagram showing examples of different transmission modes. [Figure 4B] It is a diagram showing examples of different transmission modes. [Figure 4C] This figure shows examples of different transmission modes.

[0024] [Figure 5A] This figure shows examples of different transmission modes. [Figure 5B] This figure shows examples of different transmission modes. [Figure 5C] This figure shows examples of different transmission modes. [Figure 5D] This figure shows examples of different transmission modes.

[0025] [Figure 6] This figure shows an example of controlling the transmission power.

[0026] [Figure 7] This figure shows the timing for determining TPMI or a combination of TPMI based on the first waveform information and precoding information indicated by the DCI message.

[0027] [Figure 8] This diagram shows the timing for determining TPMI or a combination of TPMI based on precoding information indicated by the DCI message and second waveform information.

[0028] [Figure 9] This figure shows the timing at which TPMI or a combination of TPMI based on the first waveform information is indicated by the MEC CE message.

[0029] [Figure 10] This flowchart shows an exemplary method performed by a terminal device according to some embodiments of the present disclosure.

[0030] [Figure 11] This flowchart shows an exemplary method performed by a terminal device according to some embodiments of the present disclosure.

[0031] [Figure 12] This flowchart shows an exemplary method performed by a terminal device according to some embodiments of the present disclosure.

[0032] [Figure 13] This flowchart shows an exemplary method performed by a network device according to some embodiments of the present disclosure.

[0033] [Figure 14] This flowchart shows an exemplary method performed by a network device according to some embodiments of the present disclosure.

[0034] [Figure 15] This is a schematic block diagram of a device suitable for implementing an embodiment of the present disclosure.

[0035] In the diagram, identical or similar reference numbers represent identical or similar elements. [Modes for carrying out the invention]

[0036] The principles of this disclosure are described here with reference to several exemplary embodiments. These embodiments are provided for illustrative purposes only and should be understood as helping those skilled in the art to understand and implement this disclosure and not to imply any limitation on the scope of this disclosure. Embodiments described herein can be implemented in a variety of ways different from those described below.

[0037] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art.

[0038] References in this disclosure to “one embodiment,” “embodiment,” “exemplary embodiment,” etc., indicate that the described embodiment may include certain features, structures, or characteristics, but not all embodiments necessarily include such specific features, structures, or characteristics. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when describing certain features, structures, or characteristics in relation to an embodiment, it is considered that the influence of such features, structures, or characteristics in relation to other embodiments, whether or not they are explicitly described, is within the knowledge of those skilled in the art.

[0039] The terms “first,” “second,” etc., may be used in this specification to describe various elements, but it should be understood that these elements should not be limited by these terms. These terms are used solely to distinguish one element from another. For example, without departing from the scope of the exemplary embodiments, the first element may be named the second element, and similarly, the second element may be named the first element. As used herein, the terms “and / or” include any and all combinations of one or more of the terms described.

[0040] The terms used herein are for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments. The singular forms “one” and “the foregoing” as used herein also include the plural forms unless expressly indicated in the context. Where used herein, the terms “include,” “encompass,” “have,” “equip,” “possess,” and / or “have” specify the presence of the described features, elements, and / or components, but should be further understood not to exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0041] In some examples, values, procedures, or devices are referred to as “best,” “worst,” “highest,” “minimum,” “maximum,” etc. Such descriptions are intended to show that a choice can be made from among many usable functional alternatives, and it should be understood that such a choice does not need to be better, smaller, higher, or otherwise more desirable than other choices.

[0042] As used herein, the term “network device” means a device capable of providing or hosting a cell or coverage on which terminal devices can communicate. Examples of network devices include, but are not limited to, Node B (NodeB or NB), Evolved Node B (eNodeB or eNB), Node B for New Radio Access (gNB), Remote Radio Unit (RRU), Radio Head (RH), Remote Radio Head (RRH), low-power nodes such as femtonodes and piconodes, satellite network devices, and aircraft network devices. Hereafter, for illustrative purposes, several exemplary embodiments will be described with reference to an eNB as an example of a network device.

[0043] As used herein, the term “terminal device” refers to any end device that may be capable of wireless communication. For the purposes of this specification, a terminal device may also be referred to as a communication device, user equipment (UE), subscriber station (SS), portable subscriber station, mobile station (MS), or access terminal (AT). A terminal device may also be a mobile phone, cellular phone, smartphone, voice over IP (VoIP) phone, wireless local loop phone, tablet, wearable device, personal digital assistant (PDA), portable computer, desktop computer, imaging device such as a digital camera, game terminal, music storage and playback device, in-vehicle wireless terminal, wireless endpoint, mobile station, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), USB dongle, smart device, wireless customer-premises equipment (CPE), or Internet of Things (IoT). This includes, but is not limited to, devices such as Things (IoT) devices, watches or other wearable devices, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in industrial and / or automated processing chain environments), consumer electronics, and devices operating on commercial and / or industrial wireless networks. In the following description, the terms “Terminal device,” “Communication device,” “Terminal,” “User device,” and “UE” may be used interchangeably.

[0044] As used herein, the term “communication network” means a network conforming to any appropriate communication standard, such as New Radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA®), High-Speed ​​Packet Access (HSPA), and Narrow Band Internet of Things (NB-IoT). Furthermore, communication between terminal devices and network devices in a communication network may be implemented according to any appropriate generation of communication protocol, including but not limited to first-generation (1G), second-generation (2G), 2.5G, 2.75G, third-generation (3G), fourth-generation (4G), 4.5G, fifth-generation (5G) communication protocols, and / or any other protocols currently known or to be developed in the future. Embodiments of this disclosure can be applied to a variety of communication systems. Given the rapid development of communications, there will naturally be future types of communication technologies and systems that can embody this disclosure. This should not be considered to limit the scope of this disclosure to the aforementioned systems only.

[0045] As used herein, the term “circuit” may mean hardware circuitry and / or combinations of hardware circuitry and software. For example, a circuit may be a combination of analog and / or digital hardware circuitry and software / firmware. In yet another example, a circuit may be any part of a hardware processor having a digital signal processor, software and one or more memories, which work together to cause a device such as a terminal or network device to perform various functions. In yet another example, a circuit may be a hardware circuit and / or a processor such as a microprocessor or a part thereof that requires software / firmware for operation, but the software may not be present if it is not required for operation. As used herein, the term “circuit” may include hardware circuitry or one or more processors alone, or parts of hardware circuitry or one or more processors and their (or their) accompanying software and / or firmware implementations.

[0046] The functions described herein can be performed in fixed and / or wireless network nodes in various exemplary embodiments, but in other exemplary embodiments, the functions may be implemented in user device equipment (e.g., mobile phones, tablet computers, laptop computers, desktop computers, mobile IoT devices, or fixed IoT devices). For example, user device equipment may optionally have the corresponding capabilities described in relation to fixed and / or wireless network nodes. User device equipment may be a control device such as a chipset or processor configured to control the user device when installed in the user device and / or within the user device. Examples of such functions include bootstrap server functions and / or home subscriber servers, which may be implemented within the user device equipment by providing the user device equipment with software configured to run on the user device equipment from the perspective of these functions / nodes.

[0047] The wireless communication network comprises at least one network device and at least one terminal device. Furthermore, the terminal device may transmit uplink transmissions (e.g., PUSCH transmissions) to the network device.

[0048] As mentioned above, CB-based push transmission is a conventional uplink transmission method. During CB-based push transmission, vector

number

number

[0049] Table 1 below shows an example codebook for 4-layer transmission using four antenna ports with conversion precoding disabled. [Table 1]

[0050] Referring to Figure 1A, Figure 1A shows a signaling flow 100 for CB-based PUSCH. As shown in Figure 1A, terminal devices and network devices may transmit information about UE capability to each other (110).

[0051] One example of UE capability is a coherence type supported by the terminal device, where the coherence type may be one of full coherent, partial coherent, or noncoherent. In one particular exemplary embodiment, the coherence type may be reported using the information element (IE) push-TransCoherence. Figure 1B shows an example of a coherence type in the relevant solution. Additionally, only a subset of precoders can be used for a particular coherence type.

[0052] Another example of UE capability is a full-power mode supported by the terminal device, which may be one of the following: full-power mode 0 (fullpower or ul-FullPwrMode), full-power mode 1 (ul-FullPwrMode1 or fullpowerMode1), and full-power mode 2 (ul-FullPwrMode2 or fullpowerMode2). Figure 1B shows an example of a full-power mode in the relevant solution. Specifically, in full-power mode 0, the transmit power is evenly divided between the non-zero PUSCH antennas, so the terminal device can supply a maximum output power of 23 dBm. In full-power mode 1, the terminal device can transmit at a total maximum output power of 23 dBm over the PUSCH using precoder {1,1}, which means that precoders {1,0} and {0,1} cannot supply the maximum output power. In full power mode 2, the terminal device can transmit at a total maximum output power of 23 dBm on the PUSCH using the precoder {1,1} through TPMI reporting and antenna virtualization procedures.

[0053] Furthermore, full power modes may be reported in IE including, but not limited to, ul-FullPwrMode-r16, ul-FullPwrMode2-MaxSRS-ResInSet-r16, ul-FullPwrMode2-TPMIGroup-r16, ul-FullPwrMode2-SRSConfig-diffNumSRSPorts-r16, ul-FullPwrMode1-r16, etc. Additionally, certain full power capabilities may only utilize a subset of precoders.

[0054] Other UE capabilities may include the maximum number of uplink layers supported by the terminal device and the maximum number of SRS ports supported by the terminal device.

[0055] Continuing with Figure 1A, the network device may configure CB-based PUSCH by sending a radio resource control (RRC) re-configuration message to 120. Some of the information configured by the RRC re-configuration message is: SRS settings, • Push settings, for example, transformPrecoder, maxRank, codebookSubset, and full power mode. • Demodulation reference signal (DMRS) settings, e.g., maxLength and dmrs-Type. It is shown as follows.

[0056] Next, the terminal device may send an SRS transmission to the network device in accordance with the received RRC(re)configuration message (130). The network device then measures the SRS, searches for an appropriate precoder (140), and determines the number of layers and TPMI.

[0057] Following the above procedure, the network device may send an uplink permission (i.e., a DCI message) to schedule a CB-based push transmission (150). Specifically, the DCI message includes an SRI field and a TPMI field.

[0058] Based on the received uplink permission, the terminal device may send a CB-based PUSCH transmission to the network device (160).

[0059] As mentioned above, it has been proposed that the terminal device may be deployed to have two or more panels. Furthermore, support for STxMP technology is required to improve transmission performance. Specifically, it is required that multiple panels be deployed in the terminal device, that these multiple panels can be activated at once, and that one or more panels can be used for transmission simultaneously.

[0060] Currently, the STxMP technology has not been sufficiently discussed, and more discussion is expected in the upcoming 3GPP® release 18.

[0061] Specifically, the requirements include focusing on FR2 and multi-TRP to facilitate simultaneous multi-panel uplink transmission and achieve higher uplink throughput / reliability, assuming a maximum of two transmit and receive points (TRP) and a maximum of two panels, and targeting CPE / FWA / vehicles / industrial equipment (where applicable), and specifying these if necessary. Uplink precoding instructions for PUSCH, which do not have a new codebook for multi-panel simultaneous transmission. ◆Considering single DCI and multi-DCI based multi-TRP operations, the total number of layers is a maximum of 4 across all panels, and the total number of codewords is a maximum of 2 across all panels. Considering single-DCI and multi-DCI-based multi-TRP operations, the extension of the integrated TCI framework in Objective 2 is envisioned for uplink beam indication for physical uplink control channels (PUCCH) / PUSCH. ◆In the case of multi-DCI-based multi-TRP operation, only PUSCH+PUSCH or PUCCH+PUCCH will be transmitted across two panels on the same component carrier.

[0062] While some discussion has already taken place regarding STxMP, it appears that such discussions have primarily focused on assumptions and generalized concepts rather than specific, clear technical solutions. In other words, there are several unresolved issues that need to be discussed.

[0063] One unresolved issue is how to exchange capability information. For example, terminal devices with multiple panels simultaneously may have more complex coherence types, as antenna ports may be on the same panel or span multiple panels. Furthermore, for single-panel or multi-panel configurations, total power constraints per UE or per panel may be considered.

[0064] Another unresolved issue is how to configure the SRS resource sets associated with CB-based PUSCH STxMP. Specifically, in the relevant solution, the SRS resource sets applicable to PUSCH scheduled by DCI format 0_1 ​​and DCI format 0_2 are defined by entries in the higher-level parameters srs-ResourceSetToAddModList and srs-ResourceSetToAddModListDCI-0-2 within SRS-config. Furthermore, if the higher-level parameter usage within SRS-ResourceSet is set to "codebook", it is possible that only one SRS resource set can be configured within srs-ResourceSetToAddModList, and if the higher-level parameter usage within SRS-ResourceSet is set to "codebook", it is possible that only one SRS resource set can be configured within srs-ResourceSetToAddModListDCI-0-2. However, one SRS resource set may not be sufficient to support CB-based PUSCH STxMP.

[0065] Another unresolved issue is how to schedule CB-based PUSCH STxMP. Specifically, generally speaking, a DCI message may include an SRI field indicating the SRS resource set and a TMPI field indicating precoding information and layer number. In this case, a conventional DCI message cannot indicate two uplink beams. Furthermore, conventional DCI messages cannot support scheduling CB-based PUSCH STxMP.

[0066] Additionally, in the relevant solutions, different waveforms may correspond to different codebooks, and the terminal device may determine the precoder based on both the currently used codebook and the TPMI indicated in the DCI message. In the relevant solutions, the waveform information used for PUSCH is indicated by an RRC message. However, the transmission period of the RRC message is relatively long. Therefore, support for dynamic waveform switching is required. How to implement dynamic waveform switching and how to determine the precoder when dynamic waveform switching is enabled remains unresolved.

[0067] Some embodiments of this disclosure support details for supporting CB-based PUSCH STxMP and dynamic waveform switching.

[0068] In this disclosure, some terms may refer to the same or similar physical meanings and may be used interchangeably. Some illustrative examples are given below. The terms “port used for uplink transmission,” “port used for push transmission,” “port with non-zero push transmission power,” and “port with non-zero uplink transmission power” may be used interchangeably. The terms “panel used for uplink transmission,” “panel used for push transmission,” “panel with non-zero push transmission power,” and “panel with non-zero uplink transmission power” may be used interchangeably. The terms "Transmission Capability Information," "UE Capability Information," "Capability-Related Information," "Capability Value Set," "Panel Information," and "Panel-Related Information" may be used interchangeably. The terms "precoder," "precoding," "precoding matrix," "beam," "spatial relationship information," "spatial relationship info," "TPMI," "precoding information," "precoding information and number of layers," "precoding matrix indicator (PMI)," "precoding matrix indicator," "transmit precoding matrix indication," "precoding matrix indication," "TCI status," "transmit setting indicator," "quasi co-location (QCL)," "quasi co-location," "QCL parameter," "QCL assumption," "QCL relationship," and "spatial relationship" may be used interchangeably. The terms "Single TRP," "Single TCI State," "Single TCI," "S-TCI," "Single CORESET," "Single Control Resource Set Pool," "S-TRP," and "S-TCI State" may be used interchangeably. The terms "Multi-TRP," "Multi-TCI State," "Multi-CORESET," "Multi-Control Resource Set Pool," "Multi-TRP," "Multi-TCI State," "Multi-TCI," "Multi-CORESET," and "Multi-Control Resource Set Pool," "MTRP," "M-TCI," and "M-TPR" may be used interchangeably. The terms "resource," "resource within a resource set," and "resource set" may be used interchangeably. The terms “group,” “subset,” and “set” may be used interchangeably.

[0069] Furthermore, as described herein, a panel refers to one or more antenna elements deployed in a certain area of ​​a terminal device. The panels described herein may also refer to downlink panels, uplink panels, panel types, panel statuses, capability sets, reference signal (RS) resources, RS resource sets, antenna ports, antenna port groups, beams, and beam groups. In this regard, the terms (and their equivalent expressions) “panel,” “panel type,” “antenna port set,” “antenna element,” and “antenna array” may be used interchangeably.

[0070] In addition, the panel information described herein may refer to UE panel index / identification (ID), downlink panel ID, uplink panel ID, panel type indicator, panel status indicator, capability value set index, RS resource ID, RS resource set ID, antenna port ID, antenna port group ID, beam ID, and beam group ID.

[0071] As used herein, the term “TRP” means an antenna array (having one or more antenna elements) available to a network device located at a specific geographical location. While some embodiments of this disclosure have been described with reference to multi-TRP scenarios (or single-TRP scenarios) as examples, these embodiments are for illustrative purposes only and are intended to help those skilled in the art understand and implement this disclosure, and do not imply any limitation on the scope of this disclosure. It should be understood that the contents of this disclosure described herein can be implemented in a variety of ways different from those described below.

[0072] As used herein, the term "SRS transmission" refers to the transmission of an SRS resource identified by the SRS signal resource indicator (SRI) in a DCI message for uplink authorization. Therefore, the term "recent SRS transmission" refers to the most recent transmission of an SRS resource identified by the SRI in a DCI message for uplink authorization.

[0073] As used herein, “Network” / “Network Device” refers to one or more network devices. Therefore, the terms “Network,” “Network Device,” and “One or More Network Devices” may be used interchangeably. Environment example

[0074] Figure 2A shows an exemplary communication network 200 (sometimes referred to as the “Network” for brevity) that can implement embodiments of the present disclosure. The communication network 200 includes a network device 210-1 and an optional network device 210-2 (collectively or individually referred to as network device 210). Network device 210 may provide services to terminal devices 220. For illustrative purposes, network device 210-1 is referred to as the first network device 210-1, and network device 210-2 is referred to as the second network device 210-2. Furthermore, the first network device 210-1 and the second network device 210-2 may communicate with each other.

[0075] In the communication network 200, the link from network device 210 (for example, the first network device 210-1 or the second network device 210-2) to terminal device 220 is called a downlink, and the link from terminal device 220 to network device 210 (for example, the first network device 210-1 or the second network device 210-2) is called an uplink. In the downlink, the first network device 210-1 or the second network device 210-2 is a transmitting (TX) device (or transmitter), and terminal device 220 is a receiving (RX) device (or receiver). In the uplink, terminal device 220 is a transmitting TX device (or transmitter), and the first network device 210-1 or the second network device 210-2 is an RX device (or receiver).

[0076] In some embodiments, the network device 210 and the terminal device 220 may communicate using a direct link / channel.

[0077] Additionally, the terminal device 220 may be deployed to have two or more panels. As shown in Figure 1A, the terminal device 220 is deployed to have panels 225-1 and 225-2. Hereinafter, panels 225-1 and 225-2 may be referred to as the first panel 225-1 and the second panel 225-2, respectively.

[0078] In some embodiments, the first panel 225-1 and the second panel 225-2 correspond to different sets of antenna ports / antenna elements / antenna arrays. As one specific example, the first panel 225-1 corresponds to a first set of antenna ports, and the second panel 225-2 corresponds to a second set of antenna ports.

[0079] Furthermore, in some embodiments, panels 225-1 and 225-2 may correspond to different sets of capability parameters.

[0080] In the communication network 200, CB-based PUSCH STxMP is supported. Specifically, terminal device 220 may execute CB-based PUSCH simultaneously on both panels 225-1 and 225-2.

[0081] Furthermore, in the specific example shown in Figure 2A, multi-TRP transmission is also supported. As shown in Figure 1A, the terminal device 220 may communicate with two TRPs, namely TRP 230-1 and 230-2 (collectively or individually referred to as TRP 230). For illustrative purposes, TRP 230-1 is referred to as the first TRP 230-1, and TRP 230-2 is referred to as the second TRP 230-2.

[0082] Furthermore, to support multi-TRP and / or multi-panel configurations, the network device 210 may comprise one or more TRPs. For example, the network device 210 may be coupled to multiple TRPs at different geographical locations to achieve better coverage. In one particular exemplary embodiment, the first network device 210-1 comprises a first TRP 230-1 and a second TRP 230-2. Alternatively, in another particular exemplary embodiment, the first network device 210-1 and the second network device 210-2 each comprise a first TRP 230-1 and a second TRP 230-2, respectively.

[0083] In some embodiments, the first TRP 230-1 and the second TRP 230-2 are associated with different control resource set pools (CORESET pools). For example, the first TRP 230-1 is associated with the first control resource set pool, and the second TRP 230-2 is associated with the second control resource set pool.

[0084] Furthermore, both single-TRP mode transmission and multi-TRP transmission are supported by the specific example shown in Figure 2A. Specifically, in single-TRP mode, terminal device 220 communicates with the network via the first TRP 230-1 / second TRP 230-2. Alternatively, in multi-TRP mode, terminal device 220 communicates with the network via both the first TRP 230-1 and the second TRP 230-2.

[0085] In one particular exemplary embodiment, during a CB-based PUSCH STxMP, the terminal device 220 simultaneously communicates with a first TRP 230-1 via panel 225-1 and with a second TRP 230-2 via panel 225-2.

[0086] Furthermore, the network device 210 may provide one or more serving cells, and the first TRP 230-1 and the second TRP 230-2 may be contained within the same serving cell or different serving cells. In other words, both inter-cell transmission and intra-cell transmission are supported by the specific example in Figure 2A.

[0087] Figure 2B shows an exemplary scenario of the communication network 200 shown in Figure 2A. In the specific example in Figure 2B, the first TRP 230-1 and the second TRP 230-2 are contained within the same serving cell 240. In this case, multi-TRP transmission is performed as an intra-cell transmission.

[0088] Figure 2C shows another exemplary scenario of the communication network 200 shown in Figure 2A. In the specific example in Figure 2C, the first TRP 230-1 and the second TRP 230-2 are located within different serving cells 240-1 and 240-2. In this case, multi-TRP transmission is performed as inter-cell transmission.

[0089] Communications in the communication network 200 may comply with any appropriate standard, including but not limited to Long-Term Evolution (LTE), LTE-Evolution, LTE-Advanced (LTE-A), Broadband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), and Global System for Mobile Communications (GSM). Furthermore, communications may be performed in accordance with any generation of communication protocol currently known or to be developed in the future. Examples of communication protocols include, but are not limited to, first-generation (1G), second-generation (2G), 2.5G, 2.75G, third-generation (3G), fourth-generation (4G), 4.5G, fifth-generation (5G), 5.5G, 5G-Advanced network, or sixth-generation (6G) communication protocols.

[0090] It should be understood that the number and types of devices shown in Figures 2A-2C (i.e., terminal devices 220, panels 225, network devices 210, TRP 230, and cells 240), as well as their connections and types, are for illustrative purposes only and do not imply any limitation. The communication network 200 may comprise any suitable number of devices appropriate for carrying out embodiments of the present disclosure. Process example

[0091] The principles and embodiments of this disclosure will be described in detail below with reference to Figure 3, which shows a signaling chart illustrating communication process 300 according to several embodiments of this disclosure. For illustrative purposes, process 300 will be described with reference to Figures 2A-2C.

[0092] Process 300 may involve a terminal device 220, a network device 210 (either or both of the first network device 210-1 and the second network device 210-2), and optionally, a TRP 230 (including the first TRP 230-1 and the second TRP 230-2). In other words, the implementation of some embodiments does not depend on the TRP 230. The terminal device 220 may be deployed to have a first panel 225-1 and a second panel 225-2. Furthermore, the first panel 225-1 corresponds to a first set of antenna ports (represented as ports (p0, ..., p1-1)), and the second panel 225-2 corresponds to a second set of antenna ports (represented as ports (p1, ..., p-1)).

[0093] Additionally, the first TRP 230-1 is connected to the first network device 210-1, and the second TRP 230-2 is connected to the first network device 210-1 / second network device 210-2. Additionally, the first TRP 230-1 and the second TRP 230-2 may be located in the same serving cell or in different serving cells.

[0094] The following text describes several embodiments of the present disclosure with reference to two TRPs and two panels, but these embodiments are for illustrative purposes only and are intended to help those skilled in the art understand and implement the present disclosure and do not imply any limitation on the scope of the present disclosure. It should be understood that the contents of the present disclosure described herein can be implemented in a variety of ways other than those described below.

[0095] Furthermore, it should be understood that the operations of the terminal device 220 and the network device 210 should be coordinated. In other words, the network device 210 and the terminal device 220 should have a common understanding of settings, parameters, etc. Such a common understanding may be achieved through any appropriate interaction between the network device 210 and the terminal device 220, or by both the network device 210 and the terminal device 220 applying the same rules / policies. In the following, some operations are described from the perspective of the terminal device 220, but it should be understood that the corresponding operations should be performed by the network device 210. Similarly, some operations are described from the perspective of the network device 210, but it should be understood that the corresponding operations should be performed by the terminal device 220. For the sake of brevity, some identical or similar content is omitted here.

[0096] In addition, in the following description, several interactions (e.g., exchange of capability-related information, resource / transmission configuration / scheduling / activation, etc.) are performed between the terminal device 220 and the network device 210. It should be understood that these interactions may be implemented within one signaling / message or multiple signaling / messages, including system information, RRC messages, DCI messages, uplink control information (UCI) messages, MAC CE, etc. This disclosure is not limited in this respect.

[0097] In some embodiments, one or more interactions may be specific to a particular panel, TRP, capability value, control resource set (CORESET), etc. This allows for flexible configuration and activation of CB-based PUSCH STxMP.

[0098] Furthermore, although features / operations have been described separately in specific exemplary embodiments, it should be understood that, unless explicitly stated otherwise, these features / operations described in different exemplary embodiments may be used in any appropriate combination. Example of a process for exchanging transmission capability information

[0099] According to some embodiments of this disclosure, the terminal device 220 and the network device 210 may communicate transmission capability information (which may also be referred to as "UE capability information," "capability-related information," "capability value set," "panel information," or "panel-related information") to realize the embodiments of this disclosure described below.

[0100] Referring now to Figure 3, which shows a signaling flow 300 for communication according to some exemplary embodiments of the present disclosure. As shown in Figure 3, the terminal device 220 transmits transmit capability information to the network device 210 (310). During this interactive procedure, certain rules associated with embodiments of the present disclosure may be defined, and relevant redefined / newly introduced parameters may be exchanged between the terminal device 220 and the network device 210.

[0101] In some embodiments, transmit capability information is transmitted via RRC messages. In some other embodiments, transmit capability information is transmitted via DCI messages, MAC CEs, and any appropriate signaling / messages.

[0102] In some embodiments, the transmit capability information includes the transmit mode associated with STxMP (i.e., simultaneous transmit using the multiple panel / antenna port sets). Some of the transmit modes defined in this disclosure are described below.

[0103] In some exemplary embodiments, the transmission mode is • Coherent joint transmission (CJT) using multiple activated panel / antenna port sets. • Non-coherent joint transmission (NCJT) using multiple activated panel / antenna port sets. >Different layers or different layers to different TRPs for each panel / antenna port set, > Different TB or different TRP for each panel / antenna port set, • Each panel / antenna port set uses either the same transport block (TB) space division multiplexing (SDM) repeat (referred to as SDM repeat for brevity) push, or one of the following: from the same TB SDM repeat push to a different TRP.

[0104] Figure 4A shows an example of the CJT transmission mode 400. As shown in Figure 4A, all antenna ports may be used jointly (regardless of whether the antenna port is included in the first panel 225-1 or the second panel 225-2).

[0105] Figure 4B shows an example of the NCJT transmit mode 420. As shown in Figure 4B, the first panel 225-1 and the second panel 225-2 are non-coherent, and the antenna ports within the same panel are coherent. In the specific example in Figure 4B, both 1 CW transmit and 2 CW transmit are supported. In some embodiments, the CW-to-layer mapping allows 2 CW transmits to be transmitted using four or more layers, and the two CWs can be supported by transmitting one TB per panel / TRP, with each of the two CWs being able to be mapped to layers #1 to #4.

[0106] In the specific example shown in Figure 4B, one codeword (CW), i.e., one TB, is divided into four layers (Layers #1 to #4).

[0107] In some embodiments, different layers may be transmitted simultaneously by different panels. Specifically, layers (0, ..., v1-1) are transmitted by a first panel 225-1, and layers (v1, ..., v-1) are transmitted by a second panel 225-2, where v1 is the number of layers transmitted via the first panel 225-1, and v is the total number of CW layers transmitted via both the first and second panels 225. As shown in Figure 4B, layers #1 and #2 are transmitted via the first panel 225-1, and layers #3 and #4 are transmitted via the second panel 225-2.

[0108] In some embodiments, different precoding matrices (i.e., precoders) may be used by different panels. Specifically, a first precoding matrix may be used by a first panel 225-1, and a second precoding matrix may be used by a second panel 225-2. As shown in Figure 4B, precoding matrix #1 / precoder #1 may be used by a first panel 225-1, and precoding matrix #2 / precoder #2 may be used by a second panel 225-2.

[0109] In some embodiments, different beamforming is used by different panels. As a result, a first beam may be formed by a first panel 225-1 and directed to a first TRP 230-1, and a second beam may be formed by a second panel 225-2 and directed to a second TRP 230-2. Thus, the first and second TRPs 230 may jointly process PUSCH received in an uplink transmission (e.g., CB-based PUSCH STxMP).

[0110] As a general rule, non-coherent joint transmission may be performed between different panels / ports / beams / layers and to different TRPs.

[0111] Figure 4C shows an example 440 of transmit mode SDM repetition. As shown in Figure 4C, the first panel 225-1 and the second panel 225-2 are non-coherent, while the antenna ports within the same panel are coherent.

[0112] In some embodiments, the same TB is transmitted simultaneously to multiple different TRPs via different panels. Specifically, the same number of layers is assumed for different panels. Specifically, layers (0, ..., v-1) are transmitted by the first panel 225-1 and the second panel 225-2, where v is the total number of CW layers via both the first and second panels 225.

[0113] In some embodiments, different precoding matrices (i.e., precoders) may be used by different panels. Specifically, a first precoding matrix may be used by a first panel 225-1, and a second precoding matrix may be used by a second panel 225-2. As shown in Figure 4C, precoding matrix #1 / precoder #1 may be used by a first panel 225-1, and precoding matrix #2 / precoder #2 may be used by a second panel 225-2.

[0114] In some embodiments, different beamforming is used by different panels. As a result, a first beam may be formed by a first panel 225-1 and directed to a first TRP 230-1, and a second beam may be formed by a second panel 225-2 and directed to a second TRP 230-2. Thus, the first and second TRPs 230 may process the PUSCH received in the uplink transmission (e.g., CB-based PUSCH STxMP) jointly (by soft combining) or separately.

[0115] In some embodiments, the transmission capability information includes a hybrid beamforming type associated with both a digital precoding scheme and an analog beamforming scheme.

[0116] In some embodiments, the digital precoding method is • Joint precoding for multiple TRPs across panels. • Separate precoding for each panel / each TRP. It may be one of several different layers / TBs for each panel / TRP.

[0117] In some embodiments, the analog beamforming method is • Fully connected: One antenna port is connected to all antenna elements. >The same beam is formed by multiple panels / toward different TRPs. • Subarray connection: One antenna port is connected to a subset of antenna elements. >It may be one of the following: different beams are formed by one panel / toward different TRPs.

[0118] Figures 5A to 5D show four examples of antenna structures corresponding to different hybrid beamforming types.

[0119] Other transmission capability information is, • The first coherence type, which exhibits panel-level coherence capability. • A second coherence type that indicates port-level coherence capability within the panel. • The first full power mode, which shows the full power capability at the panel level, or • Includes a second full-power mode that demonstrates the full power capability at the port level within the panel.

[0120] In some embodiments, the first full power mode is one of the following: • A first panel-level full-power mode indicating that full power is achieved regardless of the number of panels used for uplink transmission. That is, a panel-level full-power mode is supported, and the terminal device 220 can transmit at maximum power even if a subset of the panels are used for transmission, which may be done as a per-UE power constraint. • A second panel-level full-power mode indicating that full power can be supplied when all panels of the terminal device 220 are used for uplink transmission. That is, panel-level full-power mode 1 is supported, and the terminal device 220 can transmit at maximum output only when all panels are used for transmission. Or, A third panel-level full-power mode indicating that full power is possible when all panels of the terminal device 220 are used for uplink transmission, or when at least one specific precoding matrix indicator (TPMI) or TPMI combination is set. That is, panel-level full-power mode 2 is supported, and the terminal device 220 is able to transmit at maximum power only when all panels are used for transmission, or when the reported TPMI / TPMI combination is indicated.

[0121] In addition, in some embodiments, if the first full power mode is a third panel-level full power mode, the transmit capability information further includes information about the at least one specific TPMI or combination of TPMIs.

[0122] Additionally, the coherence types (including the first and second coherence types) and full-power modes (including the first and second full-power modes) depend on either or both of the supported STxMP modes (i.e., transmit modes) and UE hybrid beamforming types (i.e., hybrid beamforming types). Specifically, in some embodiments, the first coherence type, the second coherence type, the first full-power mode, and the second full-power mode are associated with the transmit mode. Alternatively or additionally, in some other embodiments, the first coherence type, the second coherence type, the first full-power mode, and the second full-power mode are associated with hybrid beamforming types associated with digital precoding and analog beamforming schemes. Such associations are illustrated with reference to Figures 5A-5D.

[0123] Figure 5A shows an antenna structure that supports a combination of joint precoding and full coherence. In the specific example in Figure 5A, the coherence type is fully coherent, and both the first and second antennas may be in full power mode 0, full power mode 1, or full power mode 2. Such an antenna structure is particularly suitable for uplink CJT (e.g., coherent STxMP push transmission).

[0124] Figure 5B shows an antenna structure that supports a combination of separate precoding and subarrays (i.e., isolated digital precoding and subarray-connected analog beamforming). In the specific example in Figure 5B, the transmit mode is NCJT (e.g., non-coherent STxMP push transmit), and the coherence type is partially coherent (i.e., fully coherent within the first / second panel and non-coherent across the first panel 225-1 and the second panel 225-2). Furthermore, in the specific example in Figure 5B, the first full-power mode is full-power mode 1 or 2 (i.e., full-power mode 1 or 2 across the first panel 225-1 and the second panel 225-2), and the second full-power mode is full-power mode 0 (i.e., full-power mode 0 within the first / second panel). Such an antenna structure is particularly suitable for uplink NCJT, or uplink simultaneous SDM repetition where the same TB is replaced by a subset of layers.

[0125] Figure 5C shows an antenna structure that supports a combination of joint precoding and subarrays (i.e., joint precoding and subarray-connected analog beamforming). In the specific example in Figure 5C, the coherence type is partially coherent (i.e., fully coherent within the first / second panel and non-coherent across the first panel 225-1 and the second panel 225-2). Furthermore, in the specific example in Figure 5C, the first full power mode is full power mode 1 or 2 (i.e., full power mode 1 or 2 across the first panel 225-1 and the second panel 225-2), and the second full power mode is full power mode 0 (i.e., full power mode 0 within the first / second panel). Such an antenna structure is particularly suitable for uplink simultaneous SDM repetition.

[0126] Figure 5D shows an antenna structure that supports a combination of separate precoding and full connectivity (i.e., separate precoding and full connectivity analog beamforming). In the specific example in Figure 5D, the coherence type is fully coherent, and both the first and second may be full power mode 0, full power mode 1, or full power mode 2.

[0127] In some embodiments, the capability value set corresponds to a panel (physical or logical entity) deployed in the terminal device 220.

[0128] Alternatively or additionally, in some embodiments, the capability value set may correspond to a specific panel type. In one exemplary embodiment, the panel type may be defined by the number of supported SRS ports, for example, type #1 corresponds to 1-port SRS, type #2 corresponds to 2-port SRS, type #3 corresponds to 4-port SRS, and so on.

[0129] Alternatively or additionally, in some embodiments, the capability value set may correspond to a specific panel status. In one exemplary embodiment, a panel status may be defined by the number of activated panels, for example, status #1 for single-panel transmission, status #2 for simultaneous transmission of two panels, status #3 for simultaneous transmission of four panels, and so on. This exemplary embodiment is particularly suitable for scenarios where multi-panel simultaneous transmission is supported.

[0130] Due to the different interpretations of the capability set described above, the terminal device 220 may report transmission capability information through different combinations of capability sets. This disclosure is not limited in this respect.

[0131] In one specific example, terminal device 220 transmits the following set of capability values ​​to network device 210 as transmission capability information. Capability value set #1 includes the maximum number of SRS ports per panel (e.g., 2 ports), the number of repeating capability value set #s (e.g., 2, suggesting that terminal device 220 has two symmetric panels), and one of the following: the second coherence type indicating port-level coherence capability within the panel, and the second full-power mode indicating port-level full-power capability within the panel. Capability value set #2: Includes one of the following: the maximum number of SRS ports for STxMP (e.g., 4 ports); a transmit mode associated with simultaneous transmission using the multiple antenna port sets; the hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme; the first coherence type indicating panel-level coherence capability; the second coherence type indicating port-level coherence capability within the panel; the first full power mode indicating panel-level full power capability; and the second full power mode indicating port-level full power capability within the panel.

[0132] According to the above procedure, capability information regarding STxMP can be exchanged more effectively between the terminal device 220 and the network device 210.

[0133] It should be understood that the transmission capability information provided above is for illustrative purposes only. In other embodiments, any appropriate transmission capability information associated with the embodiments described herein may be communicated during this stage. This disclosure is not limited in this respect. Example process for configuring and scheduling STxMP

[0134] Continuing with Figure 3, the network device 210 may generate and send to the terminal device 220 an SRS configuration (e.g., an RRC message) that allows the configuration of SRS resources for executing PUSCH STxMP (320). In some embodiments, the SRS configuration includes the number of SRS resource sets, the SRS resources within the SRS resource sets, the SRS ports, and so on. Additionally, in some embodiments, an SRS resource set (including "usage" = "codebook") may be configured specifically for STxMP PUSCH.

[0135] In some embodiments, the SRS setting is generated based on the transmit capability information described above. Specifically, the SRS setting is generated depending on at least one of the following factors: capability value set, transmit mode (i.e., STxMP mode), hybrid beamforming type (i.e., UE hybrid beamforming type), first coherence type, second coherence type, first full power mode, and second full power mode. In addition, the SRS setting may be generated depending on waveform information and DCI transmit mode (i.e., single DCI mode or multi-DCI mode).

[0136] Furthermore, one or more SRS resource sets may be indicated within the SRS configuration. In one particular exemplary embodiment, the terminal device 220 comprises two 2-port panels (e.g., a first panel 225-1 and a second panel 225-2), and one or both of the panels can be used for uplink transmission to two TRPs (e.g., TRP 230). In this particular exemplary embodiment, the relevant SRS resource sets that may be indicated by the SRS configuration are: • A first SRS resource set associated with the first panel or first capability value set of terminal device 220, i.e., SRS resource set #1 for the first panel 225-1 or the first TRP 230-1, • A second SRS resource set associated with the second panel or second capability value set of terminal device 220, i.e., SRS resource set #2 for the second panel 225-2 or second TRP 230-2, • A third SRS resource set associated with both the first and second panels of terminal device 220 or both the first and second capability value sets, namely SRS resource set #3 for STxMP PUSCH, This includes at least a portion of them.

[0137] The SRS configuration may refer to one or more of the first to third SRS resource sets, as described in detail below.

[0138] Furthermore, in this specific example, a 2-port SRS resource is included in SRS resource set #1, another 2-port SRS resource is included in SRS resource set #2, and a 4-port SRS resource is included in SRS resource set #3.

[0139] Additionally, the ports of the 4-port SRS resource included in SRS resource set #3 may be divided into different port groups, for example, a first port group (e.g., port group #1: {port 0, port 1}) and a second port group (e.g., port group #2: {port 2, port 3}).

[0140] Additionally, two uplink beams can be configured per resource by sharing two integrated uplink TCI states or two integrated coupled TCI states using two reference signals in the QCL-info settings or spatial relationship information, or by applying two beams reported together with panel information in the correspondence report. Additionally, one uplink beam is applied to one port group.

[0141] In this way, a dedicated SRS resource set can be configured for PSUCH STxMP.

[0142] The terminal device 220 may then perform an SRS transmission to the network device 210 (330). By measuring the SRS transmission, the network device 210 may generate and send an uplink permission (i.e., a DCI message) to the terminal device 220 for scheduling an uplink transmission (i.e., an STxMP push) through at least two of a set of antenna ports (340). Specifically, the DCI message contains first information about the SRS resources associated with the uplink transmission, second information about the precoding information associated with the uplink transmission, and third information indicating the transmission mode of the uplink transmission.

[0143] Based on the DCI message, terminal device 220 may perform an uplink transmission (i.e., STxMP PUSCH) with network device 210 (360).

[0144] According to some embodiments of this disclosure, configuration messages (i.e., RRC messages) and uplink permission messages (i.e., DCI messages) are extended. In an exemplary embodiment, an SRS resource set configured specifically for StxMP may be introduced and configured via an RRC message. In another exemplary embodiment, the improved DCI message may include fields that dynamically indicate different STxMP modes. Furthermore, the number, bit width, and interpretation of the SRI and TPMI fields in the improved DCI depend on the SRS resource indicator in the DCI message and the SRS configuration in the improved RRC message. Thus, it is possible to properly configure and schedule PUSCH STxMP.

[0145] Furthermore, several other parameters set for PUSCH (e.g., maxRank, codebookSubset, fullpower mode, etc.) may be associated with at least one of the reported transmit capability information (i.e., UE capability value) and transmit mode. In some embodiments, for different transmit modes, the TPMI / SRI fields included in the DCI message correspond to one or more different values ​​of several other parameters set for PUSCH. Specifically, in some embodiments, the values ​​of the other parameters set for PUSCH (e.g., maxRank, codebookSubset, fullpower mode, etc.) may be associated with at least one of the SRI and TPMI fields and the SRS resource being set. Furthermore, the value of any of the other parameters set for PUSCH (e.g., maxRank, codebookSubset, fullpower mode, etc.) may be implicitly or explicitly indicated.

[0146] In some embodiments, in order to schedule uplink transmissions, • First information relating to the SRS resource associated with the at least one uplink transmission, · Second information relating to the precoding information associated with the at least one uplink transmission, or • Third information indicating the transmission mode of at least one uplink transmission, It may be used.

[0147] In one particular exemplary embodiment, the first, second, and third pieces of information are included within the DCI message. Alternatively or additionally, in other particular exemplary embodiments, the first and second pieces of information are included within the DCI message, and the third piece of information is included within the RRC or MAC CE message.

[0148] Including the first and second pieces of information in the DCI message maximizes compatibility with the current uplink transmission scheduling procedure, while including the third piece of information in the DCI / RRC / MAC CE message maximizes the possibility of indicating STxMP mode.

[0149] Furthermore, in some embodiments, the third piece of information is the "SRS resource set indicator" field within the DCI message. Specifically, different states of the "SRS resource set indicator" field correspond to different STxMP modes. Thus, different states of the "SRS resource set indicator" field within the DCI enable dynamic indication of different STxMP modes.

[0150] To better understand, let's explain a few examples of what is being processed one by one. Example process associated with three SRS resource sets

[0151] In some embodiments, the terminal device 220 is • A first SRS resource set associated with the first panel or first capability value set of the terminal device 220, • A second SRS resource set associated with the second panel or second capability value set of the terminal device 220, A third SRS resource set associated with both the first and second panels of the terminal device 220 or both the first and second capability value sets, Receives the first SRS setting indicating the following.

[0152] In some embodiments, the network device 210 may determine the number of layers and precoder for subsequent push transmissions by first using the SRS resources included in the third SRS resource set by the terminal device 220.

[0153] According to some embodiments of this disclosure, the first SRS resource set and the second SRS resource set may be configured / triggered on demand, and DCIs having different structures may be generated accordingly.

[0154] In some embodiments, the SRS resources in the third SRS resource set include two port groups, where the number of ports in the first port group is equal to the number of ports in the SRS resources in the first SRS resource set, and the number of ports in the second group is equal to the number of ports in the SRS resources in the second SRS resource set.

[0155] In some embodiments, when the transmission mode is NCJT, the network device 210 may set / trigger SRS resources included in SRS resource sets #1 and #2 based on the total rank obtained in SRS resource set #3, thereby enabling the acquisition of precoders for each panel / or each TRP. Thus, in some embodiments, when the third information indicates that the uplink transmission is an NCJT transmission, the DCI message includes first information and second information, where the first information includes a first SRI associated with a first SRS resource set and a second SRI associated with a second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0156] In some embodiments, if third information indicates that the uplink transmission is an NCJT transmission and that the uplink transmission is transmitted using a single codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Specifically, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a single codeword.

[0157] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to layers (0, ..., v1-1) corresponding to a first SRI, and the second TPMI represents a second precoder applied to layers (v1, ..., v-1) corresponding to a second SRI, where v1 is the number of layers transmitted through the first UE panel (i.e., the first panel 225-1) and v is the total number of layers in one CW through both panels (i.e., the first panel 225-1 and the second panel 225-2).

[0158] In some embodiments, if the third information indicates that the uplink transmission is an NCJT transmission and that the uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Specifically, the number of the at least one layer corresponds to the first codeword, and the number of the at least one other layer corresponds to the second codeword.

[0159] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to the layers (0, ..., v1-1) corresponding to the first SRI, and the second TPMI represents a second precoder applied to the layers (0, ..., v2-1) corresponding to the second SRI, where v1 is the number of layers of the first CW and v2 is the number of layers of the second CW.

[0160] Additionally, in some embodiments, if there are two CWs (i.e., TBs), the DCI message includes two modulation and coding scheme (MCS) / redundancy version (RV) / new data indicator (NDI) fields. In light of this, whether one CW or two CWs are applied can be determined by the number of MCS / RV / NDI fields.

[0161] In some embodiments, when the transmission mode is SDM, the network device 210 may configure / trigger the SRS resources included in SRS resource sets #1 and #2 to have two uplink beams. Thus, in some embodiments, when the third information indicates that the uplink transmission is an SDM transmission, the DCI message includes first information and second information, where the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0162] In some embodiments, if third information indicates that the uplink transmission is an SDM repetition, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0163] Additionally, in some embodiments, for SDM iterations (e.g., PUSCH iteration type A or PUSCH iteration type B), the first port group and the second port group are applied simultaneously to K iterations (type A) or K nominal iterations (type B) having all K consecutive slots.

[0164] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), the number of ports associated with the first TPMI corresponds to the number of ports of the SRS resource associated with the first SRI, and the number of ports associated with the second TPMI corresponds to the number of ports of the SRS resource associated with the second SRI.

[0165] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one maxRank value among a first maxRank value associated with the first TPMI (e.g., r1), a second maxRank value associated with the second TPMI (e.g., r2), and a third maxRank value associated with both the first and second TPMIs (e.g., r, r=r1+r2) may be set for PUSCH transmission. In some embodiments, only the third maxRank value is set, and the first maxRank value associated with the first TPMI is ceil(r / 2) (or floor(r / 2)), and the second maxRank value associated with the second TPMI is floor(r / 2) (or ceil(r / 2)) accordingly. The first, second, and third maxRank values ​​are determined based on UE capabilities, for example, to be the maximum number of supported SRS ports or the maximum number of supported uplink layers for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. Additionally, the same maxRank values ​​are associated with the first and second TPMIs.

[0166] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one codebookSubset value among a first codebookSubset value associated with the first TPMI, a second codebookSubset value associated with the second TPMI, and a third codebookSubset value associated with both the first and second TPMIs may be set for PUSCH transmission. The first, second, and third codebookSubset values ​​are determined based on UE capability and are determined to be of the coherent type, for example, for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. The codebookSubset value may be one of fullAndPartialAndNonCoherent, partialAndNonCoherent, and nonCoherent. Additionally, the same codebookSubset value is associated with both the first and second TPMIs.

[0167] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one fullpowermode value among a first fullpowermode value associated with the first TPMI, a second fullpowermode value associated with the second TPMI, a third fullpowermode value associated with both the first and second TPMIs, and a fourth fullpowermode value applied between the first and second TPMIs may be set for PUSCH transmission. The first, second, and third fullpowermode values ​​are determined based on UE capability to be, for example, full power mode within the first panel 225-1, the second panel 225-2, and within each panel 225, respectively. The fourth fullpowermode value is determined based on UE capability to be, for example, full power mode at the panel level. Any of the first, second, and third fullpowermode values ​​may be one of the port-level fullpowermode0, port-level fullpowermode1, or port-level fullpowermode2. The fourth fullpowermode value may be one of the panel-level fullpowermode0, panel-level fullpowermode1, or panel-level fullpowermode2. Additionally, the same fullpowermode value is associated with both the first and second TPMIs.

[0168] In some embodiments, when the transmission mode is CJT, the network device 210 may calculate the rank by measuring the 4-port SRS, assuming an ideal backhaul between two TRPs for joint channel acquisition. Thus, in some embodiments, when the third information indicates that the uplink transmission is a CJT transmission, the DCI message includes the first information and the second information, where the first information includes a third SRI associated with a third SRS resource set, and the second information includes a third TPMI corresponding to the third SRI.

[0169] In one particular exemplary embodiment, the third TPMI represents a third precoder applied on layers (0, ..., v-1) corresponding to the third SRI. As a result, the third SRS resource set and the third SRI correspond to a capability value set with a greater number of SRS ports. Alternatively, the third SRS resource set and the third SRI correspond to an SRS resource set with a greater number of SRS ports.

[0170] In some embodiments, when the transmission mode is CJT, or when a DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), the number of ports associated with the third TPMI corresponds to the number of ports of the SRS resource associated with the third SRI.

[0171] In some embodiments, if the transmission mode is CJT, or if the DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), a fourth maxRank value associated with the third TPMI may be set for PUSCH transmission. The fourth maxRank value is determined based on UE capabilities, for example, to be the maximum number of supported SRS ports or the maximum number of supported uplink layers for both the first and second panels 225.

[0172] In some embodiments, when the transmission mode is CJT, or when the DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), the codebookSubset value set for PUSCH transmission may be a fourth codebookSubset value associated with the third TPMI. The fourth codebookSubset value is determined based on UE capability, for example, to be of the coherent type for both the first and second panels 225. The codebookSubset value may be fullAndPartialAndNonCoherent.

[0173] In some embodiments, when the transmission mode is CJT, or when the DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), at least one of a fifth fullpowermode value and a sixth fullpowermode value associated with the third TPMI may be set for PUSCH transmission. The fifth fullpowermode value is determined based on UE capability, for example, to be in full power mode within each panel 225. The sixth fullpowermode value is determined based on UE capability, for example, to be in full power mode at the panel level. The fifth fullpowermode value may be one of port-level fullpowermode0, port-level fullpowermode1, or port-level fullpowermode2. The sixth fullpowermode value may be one of panel-level fullpowermode0, panel-level fullpowermode1, or panel-level fullpowermode2.

[0174] It should be understood that, depending on the bit width of the related field (i.e., the third piece of information), the DCI message may optionally reserve some code points for other scenarios. Example process associated with one SRS resource set

[0175] In some embodiments, the terminal device 220 is The terminal device 220 receives a first SRS configuration that indicates a third SRS resource set associated with both the first and second panels or both the first and second capability value sets.

[0176] In other words, the third SRS resource set is sent independently, and the first and second SRS resource sets are not needed. To put it another way, the SRS resource set (including "usage" = "codebook") may be configured specifically for PUSCH STxMP.

[0177] Accordingly, in some embodiments, the DCI message includes first information and second information, where the first information includes a third SRI associated with a third SRS resource set, and the second information includes at least one TPMI associated with at least one transmit precoder selected from the uplink codebook. Specifically, the at least one transmit precoder has a corresponding number of ports for the at least one TPMI. In one particular exemplary embodiment, a 4-port SRS is transmitted and a 2-port TPMI is used (for example, in the NCJT STxMP mode scenario).

[0178] In some embodiments, when the transmission mode is NCJT, the network device 210 calculates restricted ranks within different port groups (e.g., port group #1 and port group #2), and each TRP can still determine the panel rank and precoder per TRP / UE. Thus, in some embodiments, when the third information indicates that the uplink transmission is an NCJT transmission, the DCI message includes the first information and the second information, where the first information includes a third SRI associated with a third SRS resource set, and the second information includes a first TPMI corresponding to a first port group of the third SRS resource set and a second TPMI corresponding to a second port group of the third SRS resource set.

[0179] In some embodiments, the number of ports in a first port group and the number of ports in a second port group for the corresponding TPMI can be explicitly indicated, based on UE panel capabilities, based on port group settings, etc.

[0180] Specifically, in some embodiments, the number of ports in the first port group and the number of ports in the second port group, or both, are determined by the terminal device 220 and the network device 210. • Port group information included in DCI messages • Number of ports corresponding to the first TPMI, • Number of second ports supporting the second TPMI, • Number of ports for SRS resources included in the third SRS resource set, • Port group information included in the second SRS configuration, or • Capability information corresponding to the first and second control resource set pools of the terminal device 220, It is determined based on at least one of the following.

[0181] In some embodiments, the number of ports in the first or second port group is half the number of ports in the SRS resources in the third SRS resource set.

[0182] Additionally, each TRP may perform measurements independently. In other words, the network device 210 may determine the number of first port groups and the number of second port groups based on the measured signal quality of each port of the terminal device 220. Thus, the network device 210 can determine the number of first port groups and the number of second port groups even without explicit port group configuration.

[0183] In some embodiments, if third information indicates that the uplink transmission is an NCJT transmission and that the uplink transmission is transmitted using a single codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Specifically, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a single codeword.

[0184] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to layers (0, ..., v1-1), and the second TPMI represents a second precoder applied to (v1, ..., v-1), where v1 is the number of layers transmitted through the first UE panel (i.e., the first panel 225-1) and v is the total number of layers in one CW through both panels (i.e., the first panel 225-1 and the second panel 225-2).

[0185] In some embodiments, if the third information indicates that the uplink transmission is an NCJT transmission and that the uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Specifically, the number of the at least one layer corresponds to the first codeword, and the number of the at least one other layer corresponds to the second codeword.

[0186] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to layers (0, ..., v1-1), and the second TPMI represents a second precoder applied to layers (0, ..., v2-1), where v1 is the number of layers of the first CW and v2 is the number of layers of the second CW.

[0187] In some embodiments, when the transmission mode is SDM, the network device 210 determines on a per-port-group basis. Thus, in some embodiments, when the third information indicates that the uplink transmission is an SDM transmission, the DCI message includes the first information and the second information, where the first information includes a third SRI associated with the third SRS resource set, and the second information includes a first TPMI corresponding to the first port group of the third SRS resource set and a second TPMI corresponding to the second port group of the third SRS resource set.

[0188] The determination of the number of the first and second port groups is similar to that described for the NCJT scenario. For brevity, identical or similar explanations are omitted here.

[0189] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to layers (0, ..., v1-1), and the second TPMI represents a second precoder applied to (v1, ..., v-1), where v1 is the number of layers transmitted through the first UE panel (i.e., the first panel 225-1) and v is the total number of layers in one CW through both panels (i.e., the first panel 225-1 and the second panel 225-2).

[0190] In some embodiments, if third information indicates that the uplink transmission is an SDM repetition, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0191] In one particular exemplary embodiment, if the third SRS resource set corresponds to a 4-port SRS resource, and each of the first and second port groups contains a 2-port resource, then the first TPMI is associated with the first port group (i.e., 2 ports), and the second TPMI is associated with the second port group (i.e., another 2 ports).

[0192] Additionally, in some embodiments, for SDM iterations (e.g., PUSCH iteration type A or PUSCH iteration type B), the first port group and the second port group are applied simultaneously to K iterations (type A) or K nominal iterations (type B) having all K consecutive slots.

[0193] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and one SRI (e.g., a third SRI), the number of ports associated with the first TPMI corresponds to the number of ports in the first group of ports of the SRS resource associated with the third SRI, and the number of ports associated with the second TPMI corresponds to the number of ports in the second group of ports of the SRS resource associated with the third SRI.

[0194] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and one SRI (e.g., a third SRI), at least one maxRank value among a first maxRank value associated with the first TPMI (e.g., r1), a second maxRank value associated with the second TPMI (e.g., r2), and a third maxRank value associated with both the first and second TPMIs (e.g., r, r=r1+r2) may be set for PUSCH transmission. In some embodiments, only the third maxRank value is set, and the first maxRank value associated with the first TPMI is ceil(r / 2) (or floor(r / 2)), and the second maxRank value associated with the second TPMI is floor(r / 2) (or ceil(r / 2)) accordingly. The first, second, and third maxRank values ​​may be determined based on UE capabilities, for example, to be the maximum number of supported SRS ports or the maximum number of supported uplink layers for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. Additionally, the same maxRank values ​​are associated with the first and second TPMIs.

[0195] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and one SRI (e.g., a third SRI), at least one codebookSubset value among a first codebookSubset value associated with the first TPMI, a second codebookSubset value associated with the second TPMI, and a third codebookSubset value associated with both the first and second TPMIs may be set for PUSCH transmission. The first, second, and third codebookSubset values ​​may be determined based on UE capability, for example, to be of the coherent type for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. The codebookSubset value may be one of fullAndPartialAndNonCoherent, partialAndNonCoherent, or nonCoherent. Additionally, the same codebookSubset value is associated with both the first and second TPMIs.

[0196] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and one SRI (e.g., a third SRI), at least one fullpowermode value among a first fullpowermode value associated with the first TPMI, a second fullpowermode value associated with the second TPMI, a third fullpowermode value associated with both the first and second TPMIs, and a fourth fullpowermode value applied between the first and second TPMIs may be set for PUSCH transmission. The first, second, and third fullpowermode values ​​may be determined based on UE capability, for example, to be full power mode within the first panel 225-1, the second panel 225-2, and each panel 225, respectively. The fourth fullpowermode value is determined based on UE capability, for example, to be full power mode at the panel level. Any of the first, second, and third fullpowermode values ​​may be one of the port-level fullpowermode0, port-level fullpowermode1, or port-level fullpowermode2. The fourth fullpowermode value may be one of the panel-level fullpowermode0, panel-level fullpowermode1, or panel-level fullpowermode2. Additionally, the same fullpowermode value is associated with both the first and second TPMIs.

[0197] In some embodiments, if third information indicates that the uplink transmission is a CJT transmission, the DCI message includes first information and second information, where first information includes a third SRI associated with a third SRS resource set, and second information includes a third TPMI corresponding to the third SRI.

[0198] In some embodiments, when the transmission mode is CJT, or when the DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), the maxRank value set for PUSCH transmission may be a fourth maxRank value associated with the third TPMI. The fourth maxRank value is determined based on UE capabilities, for example, to be the maximum number of supported SRS ports or the maximum number of supported UL layers for both the first and second panels 225.

[0199] In some embodiments, when the transmission mode is CJT, or when the DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), the codebookSubset value set for PUSCH transmission may be a fourth codebookSubset value associated with the third TPMI. The fourth codebookSubset value is determined based on UE capability, for example, to be of the coherent type for both the first and second panels 225. The codebookSubset value may be fullAndPartialAndNonCoherent.

[0200] In some embodiments, when the transmission mode is CJT, or when the DCI message includes one TPMI (e.g., a third TPMI) and one SRI (e.g., a third SRI), at least one of a fifth fullpowermode value and a sixth fullpowermode value associated with the third TPMI may be set for PUSCH transmission. The fifth fullpowermode value is determined based on UE capability, for example, to be in full power mode within each panel. The sixth fullpowermode value may also be determined based on UE capability, for example, to be in full power mode at the panel level. The fifth fullpowermode may be one of port-level fullpowermode0, port-level fullpowermode1, or port-level fullpowermode2. The sixth fullpowermode value may be one of panel-level fullpowermode0, panel-level fullpowermode1, or panel-level fullpowermode2.

[0201] It should be understood that, depending on the bit width of the related field (i.e., the third piece of information), the DCI message may optionally reserve some code points for other scenarios. Example process associated with two SRS resource sets

[0202] In some embodiments, there is no newly introduced SRS resource set (including "usage" = "codebook") that is configured specifically for PUSCHSTxMP.

[0203] In some embodiments, the terminal device 220 is • A first SRS resource set associated with the first panel or first capability value set of the terminal device 220, • A second SRS resource set associated with the second panel or second capability value set of the terminal device 220, A third SRS setting is received, indicating the following.

[0204] Additionally, in some embodiments, it is possible to determine the number of layers and precoders for PUSCH STxMP by supporting the simultaneous use of resources included in the first and second first SRS resource sets.

[0205] Alternatively, in some other embodiments, assuming ideal separation (i.e., UE transmissions across panels do not interfere with each other), from the perspective of each TRP, two SRS resources can be transmitted at locations in different time domains. In light of this, the concept of simultaneous transmission of two SRS resources can be relaxed. For example, the transmission of two SRS resources can be performed within a time window.

[0206] In one particular exemplary embodiment, with respect to a terminal device having two 2-port panels, one or both can be used for uplink transmission to two TRPs. In this specific example, the first SRS set corresponds to the first panel 225-1, and the second SRS set corresponds to the second panel 225-2. In this particular specific embodiment, multiple 2-port SRS transmissions are performed, thereby determining a 4-port TPMI (especially in the case of CJT STxMP mode). Furthermore, in this particular specific embodiment, the first 2-port SRS resource (corresponding to the first SRS set) is transmitted using ports {0,1}, and the second 2-port SRS resource (corresponding to the second SRS set) is transmitted using ports with port ID offsets, for example, ports {2,3}.

[0207] Accordingly, in some embodiments, the DCI message includes first information and second information, where the first information includes a first SRI associated with a first SRS resource set and a second SRI associated with a second SRS resource set, and the second information includes at least one TPMI associated with a transmit precoder selected from an uplink codebook. Specifically, the transmit precoder has a number of ports corresponding to the sum of the number of ports associated with the first and second SRIs.

[0208] In some embodiments, for NCJT transmissions, the total rank is determined by a first rank obtained from a first SRS resource set and a second rank obtained from a second SRS set. Thus, in some embodiments, if third information indicates that an uplink transmission is an NCJT transmission, the DCI message includes first information and second information, where the first information includes a first SRI associated with a first SRS resource set and a second SRI associated with a second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0209] In some embodiments, if third information indicates that the uplink transmission is an NCJT transmission and that the uplink transmission is transmitted using a single codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Specifically, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a single codeword.

[0210] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to layers (0, ..., v1-1) corresponding to a first SRI, and the second TPMI represents a second precoder applied to layers (v1, ..., v-1) corresponding to a second SRI, where v1 is the number of layers transmitted through the first UE panel (i.e., the first panel 225-1) and v is the total number of layers in one CW through both panels (i.e., the first panel 225-1 and the second panel 225-2).

[0211] In some embodiments, if the third information indicates that the uplink transmission is an NCJT transmission and that the uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, the number of which corresponds to the first codeword, and the second TPMI indicates a second precoder applied on at least one other layer, specifically, the number of which corresponds to the second codeword.

[0212] In one particular exemplary embodiment, the first TPMI represents a first precoder applied to the layers (0, ..., v1-1) corresponding to the first SRI, and the second TPMI represents a second precoder applied to the layers (0, ..., v2-1) corresponding to the second SRI, where v1 is the number of layers of the first CW and v2 is the number of layers of the second CW.

[0213] Additionally, in some embodiments, if there are two CWs (i.e., TBs), the DCI message includes two modulation and coding scheme (MCS) / redundancy version (RV) / new data indicator (NDI) fields. In light of this, whether one CW or two CWs are applied can be determined by the number of MCS / RV / NDI fields.

[0214] In some embodiments, for SDM transmissions, the appropriate rank is determined to be min(first rank obtained from the first SRS resource set, second rank obtained from the second SRS set). Thus, in some embodiments, if third information indicates that the uplink transmission is an NCJT transmission, the DCI message includes first information and second information, where first information includes a first SRI associated with a first SRS resource set and a second SRI associated with a second SRS resource set, and second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0215] In some embodiments, if third information indicates that the uplink transmission is an SDM repetition, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0216] Additionally, in some embodiments, for SDM iterations (e.g., PUSCH iteration type A or PUSCH iteration type B), the first port group and the second port group are applied simultaneously to K iterations (type A) or K nominal iterations (type B) having all K consecutive slots.

[0217] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one maxRank value among a first maxRank value associated with the first TPMI (e.g., r1), a second maxRank value associated with the second TPMI (e.g., r2), and a third maxRank value associated with both the first and second TPMIs (e.g., r, r=r1+r2) may be set for PUSCH transmission. In some embodiments, only the third maxRank value is set, and the first maxRank value associated with the first TPMI is ceil(r / 2) (or floor(r / 2)), and the second maxRank value associated with the second TPMI is floor(r / 2) (or ceil(r / 2)) accordingly. The first, second, and third maxRank values ​​may be determined based on UE capabilities, for example, to be the maximum number of supported SRS ports or the maximum number of supported uplink layers for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively.

[0218] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one codebookSubset value among a first codebookSubset value associated with the first TPMI, a second codebookSubset value associated with the second TPMI, and a third codebookSubset value associated with both the first and second TPMIs may be set for PUSCH transmission. The first, first, and third codebookSubset values ​​may be determined based on UE capability, for example, to be of the coherent type for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. The codebookSubset value may be one of fullAndPartialAndNonCoherent, partialAndNonCoherent, or nonCoherent.

[0219] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one fullpowermode value among a first fullpowermode value associated with the first TPMI, a second fullpowermode value associated with the second TPMI, a third fullpowermode value associated with both the first and second TPMIs, and a fourth fullpowermode value applied between the first and second TPMIs may be set for PUSCH transmission. The first, first, and third fullpowermode values ​​may be determined based on UE capability, for example, to be in full power mode within the first panel 225-1, the second panel 225-2, and each panel 225, respectively. The fourth fullpowermode value may be determined based on UE capability, for example, to be in full power mode at the panel level. Any of the first, second, and third fullpowermode values ​​may be one of the port-level fullpowermode0, port-level fullpowermode1, or port-level fullpowermode2. The fourth fullpowermode value may be one of the panel-level fullpowermode0, panel-level fullpowermode1, or panel-level fullpowermode2.

[0220] In some embodiments, in the case of CJT transmission, the total rank can be obtained by the network device 210 through joint measurement of multiple SRS resources (e.g., first and second SRS resource sets). Thus, in some embodiments, if the third information indicates that the uplink transmission is a CJT transmission, the DCI message includes first and second information, where the first information includes a first SRI associated with a first SRS resource set and a second SRI associated with a second SRS resource set, and the second information includes a fourth TPMI associated with the first and second SRIs. Alternatively, in some embodiments, if the third information indicates that the uplink transmission is a CJT transmission, the second information includes a fifth and sixth TPMI jointly associated with the first and second SRIs.

[0221] In some embodiments, when the transmission mode is CJT, or when the DCI message includes two SRIs (e.g., a first SRI and a second SRI) and one TPMI (e.g., a fourth TPMI), the number of ports associated with the fourth TPMI corresponds to the sum of the number of ports of the SRS resource associated with the first SRI and the number of ports of the SRS resource associated with the second SRI.

[0222] In some embodiments, when the transmission mode is CJT, or when the DCI message includes two SRIs (e.g., a first SRI and a second SRI) and one TPMI (e.g., a fourth TPMI), the maxRank value set for PUSCH transmission may be the fourth maxRank value associated with the fourth TPMI. In some embodiments, when the transmission mode is CJT, or when the DCI message includes two SRIs (e.g., a first SRI and a second SRI) and one TPMI (e.g., a fourth TPMI), the maxRank value associated with the fourth TPMI may be set as twice the maxRank value set for PUSCH transmission. The fourth maxRank value is determined based on UE capability, for example, to be the maximum number of supported SRS ports or the maximum number of supported UL layers for both panels. Alternatively, in some embodiments, when the transmission mode is CJT, fifth and sixth maxRank values ​​associated with fifth and sixth TPMIs, respectively, may be set for PUSCH transmission. The fifth and sixth maxRank values ​​are determined based on UE capabilities, for example, to be the maximum number of supported SRS ports or the maximum number of supported uplink layers for the first panel 225-1 and the second panel 225-2, respectively.

[0223] In some embodiments, when the transmission mode is CJT, or when the DCI message includes two SRIs (e.g., a first SRI and a second SRI) and one TPMI (e.g., a fourth TPMI), the codebookSubset value set for PUSCH transmission may be the fourth codebookSubset value associated with the fourth TPMI. The fourth codebookSubset value is determined based on UE capability, for example, to be of the coherent type for both the first and second panels 225. The codebookSubset value may be fullAndPartialAndNonCoherent. Alternatively, in some embodiments, when the transmission mode is CJT, fifth and sixth codebookSubset values ​​associated with fifth and sixth TPMIs, respectively, may be set for PUSCH transmission. The fifth and sixth codebookSubset values ​​are determined based on UE capability, for example, to be of the coherent type for the first and second panels, respectively. The codebookSubset value may be fullAndPartialAndNonCoherent.

[0224] In some embodiments, when the transmit mode is CJT, a fourth TPMI, or at least one of the fifth and sixth fullpowermode values ​​associated with the fifth and sixth TPMIs, may be set for push transmission. The fifth fullpowermode value is determined based on UE capability, for example, to be full power mode within each panel. The sixth fullpowermode value is determined based on UE capability, for example, to be panel-level full power mode. The fifth fullpowermode value may be one of port-level fullpowermode0, port-level fullpowermode1, or port-level fullpowermode2. The sixth fullpowermode value may be one of panel-level fullpowermode0, panel-level fullpowermode1, or panel-level fullpowermode2.

[0225]

[0226] It should be understood that, depending on the bit width of the related field (i.e., the third piece of information), the DCI message may optionally reserve some code points for other scenarios. Example process for scaling transmit power

[0227] According to some embodiments of the present disclosure, the process for scaling the transmit power is extended. Continuing to refer to Figure 3, the terminal device 220 may control the transmit power before the PUSCH transmission (360).

[0228] Specifically, terminal device 220 transmits full-power transmission capability information to network device 210, where full-power transmission capability refers to both panel-level full-power transmission capability and port-level full-power transmission capability within the panel. Terminal device 220 then receives a setting for uplink transmission (e.g., a DCI message) from network device 210, which indicates TPMI or a combination of TPMIs. Based on the full-power transmission capability information and the indicated TPMI or TPMI combination, terminal device 220 may control the transmission power for uplink transmission.

[0229] This enables power constraints per UE and per panel. Furthermore, the terminal device 220 may report multiple values ​​for the maximum number of SRS ports via a capability value set report.

[0230] In some embodiments, the terminal device 220 scales the transmit power using a first scaling factor (represented as s') and a second scaling factor (represented as s), where the first scaling factor is calculated at least partially based on the full power transmit capability at the panel level, and the second scaling factor is calculated at least partially based on the full power transmit capability at the port level within the panel.

[0231] In some embodiments, the first scaling factor "s'" is 1, or a first ratio of the number of panels with non-zero push transmit power to the maximum number of panels supported / activated by the terminal device 220. Specifically, the first scaling factor s' is 1 or a first ratio, depending on the full power mode of the panel level set and supported by the terminal device 220.

[0232] In some embodiments, the second scaling factor "s" is 1, or a second ratio of the number of antenna ports with non-zero push transmit power to the maximum number of SRS ports supported by the UE within one SRS resource per panel. Specifically, the second scaling factor s is 1 or a second ratio, depending on the full power mode of the port level set and supported by the UE.

[0233] In some embodiments, the first scaling factor is • Panel-level full-power transmission capability, • TPMI or a combination of TPMI configured for uplink transmission. • Number of panels used for uplink transmission • Number of activated panels in terminal device 220 • The number of panels corresponding to the TMPT or TPMI combination, or • Total number of panels in terminal device 220, It is calculated based on at least one of the following:

[0234] In some embodiments, the second scaling factor is • Full power transmission capability at the aforementioned port level, • TPMI or a combination of TPMI configured for uplink transmission. • The number of ports used for uplink transmission within the panel. • Number of activated ports in the panel • The number of ports that support TPMI or a combination of TPMI, or • Total number of ports in the panel It is calculated based on at least one of the following:

[0235] In one particular exemplary embodiment, the terminal device 220 reports a plurality of values for the maximum number of SRS ports via a capability set report. For example, the 2-port SRS is for the first panel 225-1 and the second panel 225-2, and the 4-port SRS is for STxMP.

[0236] The terminal device 220 calculates the transmission power P and the linear value of the transmission power

Number

[0237] In this specific embodiment, the terminal device 220 scales the linear value by a second scaling factor s within a specific panel, that is,

Number

[0238] Furthermore, in this specific embodiment, the terminal device 220 scales the linear value by a second factor s' across multiple panels, that is, the total

Number

[0239] For better understanding, refer to FIG. 6 showing an example 600 of controlling transmission power. In the specific example of FIG. 6, the maximum transmission power is 23 dBm and 4-port 1-layer transmission is performed. FIG. 6 shows different combinations of panel-level full power modes and per-panel full power modes that can supply the maximum transmission power.

[0240] In some embodiments, in the case of single-panel or panel-transparent uplink transmission, when ul-FullPowerTransmission in PUSCH-Config is provided, the UE scales P^_("PUSCH",b,f,c) (i,j,q_d,l) by s, where - ul-FullPowerTransmission in PUSCH-Config is set to full power mode 1, each SRS resource in the SRS-ResourceSet with the usage set to "codebook" has two or more SRS ports, and s is the ratio of the number of antenna ports with non-zero PUSCH transmission power to the maximum number of SRS ports supported by the UE within one SRS resource associated with the corresponding capability value set report. - If ul-FullPowerTransmission in PUSCH-Config is set to fullpowerMode2, - For full-power TPMI reported by terminal device 220, s=1, where s is the ratio of the number of antenna ports with non-zero push transmit power to the number of SRS ports for the remaining TPMI, and if two or more SRS resources associated with the corresponding capability value set report are configured in an SRS-ResourceSet with usage set in "codebook", or as indicated by a type 1 configured permission, the number of SRS ports is associated with the SRS resource indicated by the SRS field in the DCI format that schedules push transmits, or if only one SRS resource is configured in an SRS-ResourceSet with usage set in "codebook", the number of SRS ports is associated with the SRS resource associated with the corresponding capability value set. - When two or more SRS resources are provided within an SRS-ResourceSet having usage set in "codebook", or indicated by a type 1 configured permission, if an SRS resource with a single port is indicated by the SRS field in the DCI format that schedules a PUSCH transmission, or if only one SRS resource with a single port is provided within an SRS-ResourceSet having usage set in "codebook", then s=1, - If ul-FullPowerTransmission in PUSCH-Config is set to fullpower, then s=1,

[0241] Furthermore, if each SRS resource in an SRS-ResourceSet where usage is set to "codebook" has two or more SRS ports, the terminal device 220 scales the linear value by the ratio of the number of antenna ports with non-zero push transmit power to the maximum number of SRS ports supported by the terminal device 220 within a single SRS resource. Example process for dynamic waveform switching

[0242] According to some exemplary embodiments of this disclosure, dynamic waveform switching is enabled. In some embodiments, the waveform may be a single-carrier waveform or a multi-carrier waveform. In view, waveform switching refers to switching between a single-carrier waveform and a multi-carrier waveform. Furthermore, when transform precoding is enabled, it means a single-carrier waveform (in New Radio (NR), discrete fourier transform spreading orthogonal frequency division multiplexing (DFT-s-OFDM)), and when transform precoding is disabled, it means a multi-carrier waveform (in NR, cyclic prefix orthogonal frequency-division multiplexing (CP-OFDM)).

[0243] Continuing with Figure 3, the terminal device 220 receives transmission information from the network device 210 (370). Specifically, the transmission information includes first waveform information and second waveform information, where the first waveform information is used by the terminal device 220 to perform an uplink transmission, and the second waveform information is used by the terminal device 220 when performing the latest SRS transmission. In some embodiments, the first waveform information is contained within a DCI message or a MAC CE message. In addition, the transmission information further includes precoding information used by the terminal device 220 to perform an uplink transmission. The terminal device 220 then determines TPMI or a combination of TPMI based on the transmission information.

[0244] In some embodiments, the first waveform information is explicitly indicated. Specifically, an additional field is included in the DCI message to indicate whether conversion precoding is enabled or disabled.

[0245] In one particular embodiment, the first waveform information is a first indication that either the first or second waveform is enabled. For example, a field "transform precoding indication" having 1 bit is introduced, where "0" indicates enabled and "1" indicates disabled.

[0246] Alternatively, in another specific embodiment, the first waveform information is a second instruction indicating whether or not to switch the currently applied waveform. For example, a field "transform precoding indication" having 1 bit is introduced, where "0" indicates no change and "1" indicates a change in waveform.

[0247] Alternatively, the first waveform information is information about the terminal device 220, and the capability value set is information about the panel or capability value set corresponding to a specific waveform. For example, a field called "transform precoding indication" having m bits is introduced, where the m-th bit points to the m-th UE panel / m-th TRP.

[0248] Additionally, dynamic switching of the uplink waveform applies only to certain specific scenarios, such as those where at least one of the indicated TPMI / TPMI combinations satisfies the condition that it is a single-layer transmission using four antenna ports and the TPMI index is one of the values ​​(12, 14, 17, 19, 20, 22, 25, 27). Tables 2 and 3 below show two examples of single-layer transmission using four antenna ports for the first and second waveform schemes. [Table 2] [Table 3]

[0249] In some embodiments, when first waveform information and precoding information are indicated by a DCI message, the terminal device 220 determines TPMI or a TPMI combination based on the first waveform information and precoding information indicated by the DCI message. Figure 7 shows the timing 700 at which TPMI or a TPMI combination is determined based on the first waveform information and precoding information indicated by the DCI message.

[0250] Alternatively, if the first waveform information and precoding information are indicated by a DCI message, the terminal device 220 determines TPMI or a TPMI combination based on the precoding information indicated by the DCI message and the second waveform information. Figure 8 shows the timing 800 for determining TPMI or a TPMI combination based on the precoding information indicated by the DCI message and the second waveform information.

[0251] Alternatively, if the first waveform information is indicated by a MAC CE message and the precoding information is indicated by a DCI message, the terminal device 220 determines TPMI or a TPMI combination based on the first waveform information and the precoding information until the first waveform information is used when performing the latest SRS. Figure 9 shows the timing 900 in which TPMI or a TPMI combination based on the first waveform information is indicated by a MAC CE message.

[0252] In addition to explicit indication, the first waveform information may be implicitly indicated. Specifically, in some embodiments, the first waveform information is indicated by an SRS resource having a first pre-configured correspondence to a particular waveform. In one particular exemplary embodiment, the first SRS resource (containing "usage" = "codebook") corresponds to the conversion precoding being enabled, and the second SRS resource corresponds to the conversion precoding being disabled. In this case, the SRI included in the DCI message means whether the conversion precoding is enabled or disabled. Additionally, the TPMI within the DCI depends on the indicated SRI.

[0253] Alternatively, in some other embodiments, the first waveform information is represented by a set of SRS resources having a second set of predefined correspondences to specific waveforms.

[0254] As one specific exemplary embodiment, the first SRS resource set and the second SRS resource set are set to have "usage" = "codebook", where the first SRS resource set corresponds to the activation of transform precoding, and the second SRS resource set corresponds to the deactivation of transform precoding. In this case, the "SRS resource set indicator" in the DCI suggests whether transform precoding is activated or deactivated. Additionally, the TPMI in the DCI message depends on the "SRS resource set indicator" and the "SRI".

[0255] In some other embodiments, when the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index set to have different precoding matrices in the first codebook for the first waveform and the second codebook for the second waveform. That is, the terminal device 220 does not expect such a TPMI (e.g., a TPMI having any index among {12, 14, 17, 19, 20, 22, 25, 27}) indicated with dynamic waveform switching.

[0256] Additionally, in some other embodiments, the uplink transmission is single-layer transmission using four antenna ports, and the TPMI index is among {12, 14, 17, 19, 20, 22, 25, 27}. Method Example

[0257] FIG. 10 is a flowchart of an exemplary method 1000 according to some embodiments of the present disclosure. For example, the method 1000 may be implemented in the terminal device 220 as shown in FIGS. 2A - 2C.

[0258] In block 1010, a terminal device 220 deployed to have a plurality of antenna port sets receives a DCI message for scheduling at least one uplink transmission through at least two of the plurality of antenna port sets, the DCI message comprising: first information relating to the SRS resource associated with the at least one uplink transmission; second information relating to the precoding information associated with the at least one uplink transmission; and third information indicating the transmission mode of the at least one uplink transmission.

[0259] In block 1020, the terminal device 220 transmits the at least one uplink transmission to the network via at least two of the set of antenna ports based on the DCI message.

[0260] In some embodiments, the plurality of antenna port sets include a first antenna port set corresponding to a first panel or first capability set of the terminal device 220, and a second antenna port set corresponding to a second panel or second capability set of the terminal device 220. Furthermore, the at least one uplink transmission is a CB-based push and is performed via a plurality of TRPs.

[0261] In some embodiments, the terminal device 220 receives a first SRS setting which includes a first SRS resource set associated with a first panel or a first capability value set of the terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220, and a third SRS resource set associated with both the first and second panels or both the first and second capability value sets of the terminal device 220.

[0262] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0263] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repeat, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0264] In some embodiments, if third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Furthermore, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a codeword.

[0265] In some embodiments, if the third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, the number of which corresponds to the first codeword, and the second TPMI indicates a second precoder applied on at least one other layer, the number of which corresponds to the second codeword.

[0266] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the first information includes a third SRI associated with a third SRS resource set, and the second information includes a third TPMI corresponding to the third SRI.

[0267] In some embodiments, the terminal device 220 receives a second SRS configuration indicating a third SRS resource set associated with either the first and second panels of the terminal device 220 or both the first and second capability value sets.

[0268] In some embodiments, the first information includes a third SRI associated with the third SRS resource set, and the second information includes at least one TPMI associated with at least one transmit precoder selected from an uplink codebook, wherein the at least one transmit precoder has a corresponding number of ports for the at least one TPMI.

[0269] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the at least one TPMI includes a first TPMI corresponding to a first port group of the third SRS resource set and a second TPMI corresponding to a second port group of the third SRS resource set.

[0270] In some embodiments, at least one of the number of first port groups and the number of second port groups is determined based on at least one of the following: port group information included in the DCI message, the number of first ports corresponding to the first TPMI, the number of second ports corresponding to the second TPMI, the number of ports of the SRS resource included in the third SRS set, port group information included in the second SRS setting, or capability information corresponding to the first and second control resource set pools of the terminal device 220.

[0271] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the second information includes a third TPMI corresponding to a third SRI.

[0272] In some embodiments, the terminal device 220 receives a third SRS setting that includes a first SRS resource set associated with a first panel or first capability value set of the terminal device 220, and a second SRS resource set associated with a second panel or second capability value set of the terminal device 220. Specifically, simultaneous use of resources included in the first and second first SRS resource sets is supported.

[0273] In some embodiments, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, wherein the second information includes at least one TPMI associated with a transmit precoder selected from an uplink codebook, the transmit precoder having a number of ports corresponding to the sum of the number of ports associated with the first and second SRIs.

[0274] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the at least one TPMI includes one of a fourth TPMI associated with the first and second SRIs, or a fifth and sixth TPMI jointly associated with the first and second SRIs.

[0275] In some embodiments, the terminal device 220 transmits transmission capability information to the network device 210 via at least two of the plurality of antenna port sets, the transmission capability information including at least one of the following: a transmission mode associated with simultaneous transmission using the plurality of antenna port sets; a hybrid beamforming type associated with a digital precoding method and an analog beamforming method; a first coherence type indicating panel-level coherence capability; a second coherence type indicating port-level coherence capability within the panel; a first full-power mode indicating panel-level full-power capability; or a second full-power mode indicating port-level full-power capability within the panel.

[0276] In some embodiments, the terminal device 220 receives SRS settings generated based on transmission capability information.

[0277] In some embodiments, the first coherence type, the second coherence type, the first full power mode, and the second full power mode are associated with at least one of the transmission mode, the hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme.

[0278] In some embodiments, the first coherence mode is one of the following: a first panel-level full-power mode indicating that full power is achieved regardless of the number of panels used for the at least one uplink transmission; a second panel-level full-power mode indicating that the full power can be supplied when all panels of the terminal device 220 are used for the at least one uplink transmission; or a third panel-level full-power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission, or when at least one specific TPMI or TPMI combination is configured.

[0279] In some embodiments, if the first full-power mode is a third panel-level full-power mode, the transmit capability information further includes information about the at least one specific TPMI or combination of TPMIs.

[0280] Figure 11 is a flowchart of an exemplary method 1100 according to some embodiments of the present disclosure. For example, method 1100 may be implemented in a terminal device 220 as shown in Figures 2A-2C.

[0281] In block 1110, the terminal device 220 transmits full-power transmission capability information to the network, which indicates the full-power transmission capability at the panel level and the full-power transmission capability at the port level within the panel.

[0282] In block 1120, terminal device 220 receives a configuration from the network for at least one uplink transmission, which indicates TPMI or a combination of TPMI.

[0283] In block 1130, the terminal device 220 controls the transmit power of the at least one uplink transmit based on full-power transmit capability information and the indicated TPMI or combination of TPMIs.

[0284] In some embodiments, the terminal device 220 scales the transmit power using a first scaling factor calculated at least partially based on the full-power transmit capability at the panel level and a second scaling factor calculated at least partially based on the full-power transmit capability at the port level within the panel.

[0285] In some embodiments, the first scaling factor is calculated based on at least one of the following: full power transmit capability at the panel level, TPMI or TPMI combination configured for the at least one uplink transmit, the number of panels used for the at least one uplink transmit, the number of activated panels in the terminal device 220, the number of panels corresponding to the TMPT or TPMI combination, or the total number of panels in the terminal device 220.

[0286] In some embodiments, the second scaling factor is calculated based on at least one of the following: the port-level full-power transmit capability, the TPMI or TPMI combination configured for the at least one uplink transmit, the number of ports in the panel used for the at least one uplink transmit, the number of activated ports in the panel, the number of ports corresponding to the TPMI or the TPMI combination, or the total number of ports in the panel.

[0287] Figure 12 is a flowchart of an exemplary method 1200 according to some embodiments of the present disclosure. For example, method 1200 may be implemented in a terminal device 220 as shown in Figures 2A-2C.

[0288] In block 1210, the terminal device 220 receives transmission information from the network device 210, the transmission information including first waveform information contained in a DCI message or MAC CE message and used by the terminal device 220 to perform at least one uplink transmission, second waveform information used by the terminal device 220 when performing the most recent SRS transmission, and precoding information used by the terminal device 220 to perform at least one uplink transmission.

[0289] In block 1220, the terminal device 220 determines TPMI or a combination of TPMI based on the transmitted information.

[0290] In some embodiments, the first waveform information is one of the following: a first instruction indicating whether a first or second waveform is activated; a second instruction indicating whether or not to switch the currently applied waveform; or information regarding a panel or capability value set of the terminal device 220 corresponding to a specific waveform.

[0291] In some embodiments, when the first waveform information and the precoding information are indicated by the DCI information, the terminal device 220 determining the TPMI or TPMI combination includes one of the following: determining the TPMI or TPMI combination based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or TPMI combination based on the precoding information indicated by the DCI message and the second waveform information.

[0292] In some embodiments, when the first waveform information is indicated by the MAC CE message and the precoding information is indicated by the DCI information, the terminal device 220 determining the TPMI or TPMI combination includes determining the TPMI or TPMI combination based on the first waveform information and the precoding information until the first waveform information is used when performing the latest SRS.

[0293] In some embodiments, the first waveform information is represented by an SRS resource having a first pre-configured correspondence to a specific waveform, or a set of SRS resources having a second pre-configured correspondence to a specific waveform.

[0294] In some embodiments, when the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index that is set to have different precoding matrices in a first codebook for the first waveform and a second codebook for the second waveform.

[0295] In some embodiments, the at least one uplink transmission is a single-layer transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}.

[0296] Figure 13 is a flowchart of an exemplary method 1300 according to some embodiments of the present disclosure. For example, method 1300 may be implemented in a network device 210 as shown in Figures 2A-2C.

[0297] In block 1310, the network device 210 sends a DCI message to a terminal device 220, which is deployed to have a plurality of antenna port sets, for scheduling at least one uplink transmission through at least two of the plurality of antenna port sets. The DCI message includes first information relating to the SRS resource associated with the at least one uplink transmission, second information relating to the precoding information associated with the at least one uplink transmission, and third information indicating the transmission mode of the at least one uplink transmission.

[0298] In block 1320, the network device 210 receives from the terminal device 220, based on the DCI message, at least one uplink transmission transmitted via at least two of the plurality of antenna port sets.

[0299] In some embodiments, the plurality of antenna port sets include a first antenna port set corresponding to a first panel or first capability set of the terminal device 220, and a second antenna port set corresponding to a second panel or second capability set of the terminal device 220. Furthermore, the at least one uplink transmission is a CB-based push and is performed via a plurality of TRPs.

[0300] In some embodiments, the network device 210 transmits a first SRS configuration that includes a first SRS resource set associated with a first panel or a first capability value set of the terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220, and a third SRS resource set associated with both the first and second panels or both the first and second capability value sets of the terminal device 220.

[0301] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0302] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repeat, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0303] In some embodiments, if third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Furthermore, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a codeword.

[0304] In some embodiments, if the third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, the number of which corresponds to the first codeword, and the second TPMI indicates a second precoder applied on at least one other layer, the number of which corresponds to the second codeword.

[0305] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the first information includes a third SRI associated with a third SRS resource set, and the second information includes a third TPMI corresponding to the third SRI.

[0306] In some embodiments, the network device 210 transmits a second SRS configuration indicating a third SRS resource set associated with both the first and second panels of the terminal device 220 or with both the first and second capability value sets.

[0307] In some embodiments, the first information includes a third SRI associated with the third SRS resource set, and the second information includes at least one TPMI associated with at least one transmit precoder selected from an uplink codebook, wherein the at least one transmit precoder has a corresponding number of ports for the at least one TPMI.

[0308] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the at least one TPMI includes a first TPMI corresponding to a first port group of the third SRS resource set and a second TPMI corresponding to a second port group of the third SRS resource set.

[0309] In some embodiments, at least one of the number of first port groups and the number of second port groups is determined based on at least one of the following: port group information included in the DCI message, port group information included in the second SRS setting, the number of first ports corresponding to the first TPMI, the number of second ports corresponding to the second TPMI, the number of ports of the SRS resource included in the third SRS set, capability information corresponding to the first and second control resource set pools of the terminal device 220, and the measured signal quality of each port of the terminal device 220.

[0310] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the second information includes a third TPMI corresponding to a third SRI.

[0311] In some embodiments, the network device 210 transmits a third SRS configuration indicating a first SRS resource set associated with a first panel or first capability value set of the terminal device 220, and a second SRS resource set associated with a second panel or second capability value set of the terminal device 220. Furthermore, simultaneous use of resources included in the first and second first SRS resource sets is supported.

[0312] In some embodiments, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, wherein the second information includes at least one TPMI associated with a transmit precoder selected from an uplink codebook, the transmit precoder having a number of ports corresponding to the sum of the number of ports associated with the first and second SRIs.

[0313] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the at least one TPMI includes one of a fourth TPMI associated with the first and second SRIs, or a fifth and sixth TPMI jointly associated with the first and second SRIs.

[0314] In some embodiments, the network device 210 receives transmission capability information from the terminal device 220 via at least two of the plurality of antenna port sets, the transmission capability information includes at least one of the following: a transmission mode associated with simultaneous transmission using the plurality of antenna port sets; a hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme; a first coherence type indicating panel-level coherence capability; a second coherence type indicating port-level coherence capability within a panel; a first full-power mode indicating panel-level full-power capability; or a second full-power mode indicating port-level full-power capability within a panel.

[0315] In some embodiments, the network device 210 generates SRS settings based on transmission capability information and transmits the SRS settings to the terminal device 220.

[0316] In some embodiments, the first coherence type, the second coherence type, the first full power mode, and the second full power mode are associated with at least one of the transmission mode, the hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme.

[0317] In some embodiments, the first coherence mode is one of the following: a first panel-level full-power mode indicating that full power is achieved regardless of the number of panels used for the at least one uplink transmission; a second panel-level full-power mode indicating that the full power can be supplied when all panels of the terminal device 220 are used for the at least one uplink transmission; or a third panel-level full-power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission, or when at least one specific TPMI or TPMI combination is configured.

[0318] In some embodiments, if the first full-power mode is a third panel-level full-power mode, the transmit capability information further includes information about the at least one specific TPMI or combination of TPMIs.

[0319] Figure 14 is a flowchart of an exemplary method 1400 according to some embodiments of the present disclosure. For example, method 1400 may be implemented in a network device 210 as shown in Figures 2A-2C.

[0320] In block 1410, the network device 210 receives transmission information from the terminal device 220, the transmission information including first waveform information contained in a DCI message or MAC CE message and used by the terminal device 220 to perform at least one uplink transmission, second waveform information used by the terminal device 220 when performing the latest SRS transmission, and precoding information used by the terminal device 220 to perform at least one uplink transmission.

[0321] In block 1420, the network device 210 determines TPMI or a combination of TPMI based on the transmitted information.

[0322] In some embodiments, the first waveform information is one of the following: a first instruction indicating whether a first or second waveform is activated; a second instruction indicating whether or not to switch the currently applied waveform; or information regarding a panel or capability value set of the terminal device 220 corresponding to a specific waveform.

[0323] In some embodiments, when the first waveform information and the precoding information are indicated by the DCI information, determining the TPMI or TPMI combination includes one of the following: determining the TPMI or TPMI combination based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or TPMI combination based on the precoding information indicated by the DCI message and the second waveform information.

[0324] In some embodiments, when the first waveform information is indicated by the MAC CE message and the precoding information is indicated by the DCI information, determining the TPMI or TPMI combination includes determining the TPMI or TPMI combination based on the first waveform information and the precoding information until the first waveform information is used when performing the latest SRS.

[0325] In some embodiments, the first waveform information is represented by an SRS resource having a first pre-configured correspondence to a specific waveform, or a set of SRS resources having a second pre-configured correspondence to a specific waveform.

[0326] In some embodiments, when the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index that is set to have different precoding matrices in a first codebook for the first waveform and a second codebook for the second waveform.

[0327] In some embodiments, the at least one uplink transmission is a single-layer transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}. Example of a device

[0328] In some exemplary embodiments, a terminal device 220 deployed to have a plurality of antenna port sets comprises a circuit that receives a DCI message for scheduling at least one uplink transmission over at least two of the plurality of antenna port sets, wherein the DCI message comprises first information relating to an SRS resource associated with the at least one uplink transmission, second information relating to the precoding information associated with the at least one uplink transmission, and third information indicating the transmission mode of the at least one uplink transmission, and is configured to transmit the at least one uplink transmission over at least two of the plurality of antenna port sets to the network based on the DCI message.

[0329] In some embodiments, the plurality of antenna port sets include a first antenna port set corresponding to a first panel or first capability set of the terminal device 220, and a second antenna port set corresponding to a second panel or second capability set of the terminal device 220. Furthermore, the at least one uplink transmission is a CB-based push and is performed via a plurality of TRPs.

[0330] In some embodiments, the circuit is further configured to receive a first SRS setting, where the first SRS setting includes a first SRS resource set associated with a first panel or a first capability value set of the terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220, and a third SRS resource set associated with both the first and second panels or both the first and second capability value sets of the terminal device 220.

[0331] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0332] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repeat, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0333] In some embodiments, if third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Furthermore, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a codeword.

[0334] In some embodiments, if the third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, the number of which corresponds to the first codeword, and the second TPMI indicates a second precoder applied on at least one other layer, the number of which corresponds to the second codeword.

[0335] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the first information includes a third SRI associated with a third SRS resource set, and the second information includes a third TPMI corresponding to the third SRI.

[0336] In some embodiments, the circuit is further configured to receive a second SRS setting indicating a third SRS resource set associated with either the first and second panels of the terminal device 220 or both the first and second capability value sets.

[0337] In some embodiments, the first information includes a third SRI associated with the third SRS resource set, and the second information includes at least one TPMI associated with at least one transmit precoder selected from an uplink codebook, wherein the at least one transmit precoder has a corresponding number of ports for the at least one TPMI.

[0338] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the at least one TPMI includes a first TPMI corresponding to a first port group of the third SRS resource set and a second TPMI corresponding to a second port group of the third SRS resource set.

[0339] In some embodiments, at least one of the number of first port groups and the number of second port groups is determined based on at least one of the following: port group information included in the DCI message, the number of first ports corresponding to the first TPMI, the number of second ports corresponding to the second TPMI, the number of ports of the SRS resource included in the third SRS set, port group information included in the second SRS setting, or capability information corresponding to the first and second control resource set pools of the terminal device 220.

[0340] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the second information includes a third TPMI corresponding to a third SRI.

[0341] In some embodiments, the circuit is further configured to transmit a third SRS setting indicating a first SRS resource set associated with a first panel or first capability value set of the terminal device 220, and a second SRS resource set associated with a second panel or second capability value set of the terminal device 220. Specifically, simultaneous use of resources included in the first and second first SRS resource sets is supported.

[0342] In some embodiments, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, wherein the second information includes at least one TPMI associated with a transmit precoder selected from an uplink codebook, the transmit precoder having a number of ports corresponding to the sum of the number of ports associated with the first and second SRIs.

[0343] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the at least one TPMI includes one of a fourth TPMI associated with the first and second SRIs, or a fifth and sixth TPMI jointly associated with the first and second SRIs.

[0344] In some embodiments, the circuit is further configured to transmit transmit capability information to the network device 210 via at least two of the plurality of antenna port sets, the transmit capability information including at least one of a transmit mode associated with simultaneous transmission using the plurality of antenna port sets, a hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme, a first coherence type indicating panel-level coherence capability, a second coherence type indicating port-level coherence capability within the panel, a first full-power mode indicating panel-level full-power capability, or a second full-power mode indicating port-level full-power capability within the panel.

[0345] In some embodiments, the circuit is further configured to receive SRS settings generated based on the transmission capability information.

[0346] In some embodiments, the first coherence type, the second coherence type, the first full power mode, and the second full power mode are associated with at least one of the transmission mode, the hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme.

[0347] In some embodiments, the first coherence mode is one of the following: a first panel-level full-power mode indicating that full power is achieved regardless of the number of panels used for the at least one uplink transmission; a second panel-level full-power mode indicating that the full power can be supplied when all panels of the terminal device 220 are used for the at least one uplink transmission; or a third panel-level full-power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission, or when at least one specific TPMI or TPMI combination is configured.

[0348] In some embodiments, if the first full-power mode is a third panel-level full-power mode, the transmit capability information further includes information about the at least one specific TPMI or combination of TPMIs.

[0349] In some exemplary embodiments, the terminal device 220 includes a circuit that transmits full-power transmit capability information to a network indicating full-power transmit capability at the panel level and full-power transmit capability at the port level within the panel, receives a setting from the network indicating TPMI or a combination of TPMI for at least one uplink transmit, and is configured to control the transmit power of the at least one uplink transmit based on the full-power transmit capability information and the indicated TPMI or combination of TPMI.

[0350] In some embodiments, the circuit is further configured to scale the transmit power using a first scaling factor calculated at least partially based on the full-power transmit capability at the panel level and a second scaling factor calculated at least partially based on the full-power transmit capability at the port level within the panel.

[0351] In some embodiments, the first scaling factor is calculated based on at least one of the following: full power transmit capability at the panel level, TPMI or TPMI combination configured for the at least one uplink transmit, the number of panels used for the at least one uplink transmit, the number of activated panels in the terminal device 220, the number of panels corresponding to the TMPT or TPMI combination, or the total number of panels in the terminal device 220.

[0352] In some embodiments, the second scaling factor is calculated based on at least one of the following: the port-level full-power transmit capability, the TPMI or TPMI combination configured for the at least one uplink transmit, the number of ports in the panel used for the at least one uplink transmit, the number of activated ports in the panel, the number of ports corresponding to the TPMI or the TPMI combination, or the total number of ports in the panel.

[0353] In some exemplary embodiments, the terminal device 220 comprises a circuit that receives transmission information from the network device 210, the transmission information comprising a first waveform information contained in a DCI message or MAC CE message and used by the terminal device 220 to perform at least one uplink transmission, a second waveform information used by the terminal device 220 when performing the most recent SRS transmission, and precoding information used by the terminal device 220 to perform the at least one uplink transmission, and is configured to determine TPMI or a combination of TPMI based on the transmission information.

[0354] In some embodiments, the first waveform information is one of the following: a first instruction indicating whether a first or second waveform is activated; a second instruction indicating whether or not to switch the currently applied waveform; or information regarding a panel or capability value set of the terminal device 220 corresponding to a specific waveform.

[0355] In some embodiments, when the first waveform information and the precoding information are indicated by the DCI information, the terminal device 220 determining the TPMI or TPMI combination includes one of the following: determining the TPMI or TPMI combination based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or TPMI combination based on the precoding information indicated by the DCI message and the second waveform information.

[0356] In some embodiments, when the first waveform information is indicated by the MAC CE message and the precoding information is indicated by the DCI information, the terminal device 220 determining the TPMI or TPMI combination includes determining the TPMI or TPMI combination based on the first waveform information and the precoding information until the first waveform information is used when performing the latest SRS.

[0357] In some embodiments, the first waveform information is represented by an SRS resource having a first pre-configured correspondence to a specific waveform, or a set of SRS resources having a second pre-configured correspondence to a specific waveform.

[0358] In some embodiments, when the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index that is set to have different precoding matrices in a first codebook for the first waveform and a second codebook for the second waveform.

[0359] In some embodiments, the at least one uplink transmission is a single-layer transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}.

[0360] In some exemplary embodiments, the network device 210 comprises a circuit that sends a DCI message to a terminal device 220, which is deployed to have a plurality of antenna port sets, for scheduling at least one uplink transmission over at least two of the plurality of antenna port sets, wherein the DCI message comprises first information relating to the SRS resources associated with the at least one uplink transmission, second information relating to the precoding information associated with the at least one uplink transmission, and third information indicating the transmission mode of the at least one uplink transmission, and is configured to receive the at least one uplink transmission transmitted over at least two of the plurality of antenna port sets from the terminal device 220 based on the DCI message.

[0361] In some embodiments, the plurality of antenna port sets include a first antenna port set corresponding to a first panel or first capability set of the terminal device 220, and a second antenna port set corresponding to a second panel or second capability set of the terminal device 220. Furthermore, the at least one uplink transmission is a CB-based push and is performed via a plurality of TRPs.

[0362] In some embodiments, the circuit is further configured to transmit a first SRS setting that includes a first SRS resource set associated with a first panel or a first capability value set of the terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220, and a third SRS resource set associated with both the first and second panels or both the first and second capability value sets of the terminal device 220.

[0363] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0364] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repeat, then the number of layers associated with the first TPMI is the same as the number of layers associated with the second TPMI.

[0365] In some embodiments, if third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a codeword, then the first TPMI indicates a first precoder applied on at least one layer, and the second TPMI indicates a second precoder applied on at least one other layer. Furthermore, the total number of layers of the first and second precoders is equal to the number of layers corresponding to a codeword.

[0366] In some embodiments, if the third information indicates that the at least one uplink transmission is an NCJT transmission and that the at least one uplink transmission is transmitted using a first codeword and a second codeword, then the first TPMI indicates a first precoder applied on at least one layer, the number of which corresponds to the first codeword, and the second TPMI indicates a second precoder applied on at least one other layer, the number of which corresponds to the second codeword.

[0367] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the first information includes a third SRI associated with a third SRS resource set, and the second information includes a third TPMI corresponding to the third SRI.

[0368] In some embodiments, the circuit is further configured to transmit a second SRS setting indicating a third SRS resource set associated with either the first and second panels of the terminal device 220 or both the first and second capability value sets.

[0369] In some embodiments, the first information includes a third SRI associated with the third SRS resource set, and the second information includes at least one TPMI associated with at least one transmit precoder selected from an uplink codebook, wherein the at least one transmit precoder has a corresponding number of ports for the at least one TPMI.

[0370] In some embodiments, if the third information indicates that the at least one uplink transmission is an SDM repetition or an NCJT transmission, the at least one TPMI includes a first TPMI corresponding to a first port group of the third SRS resource set and a second TPMI corresponding to a second port group of the third SRS resource set.

[0371] In some embodiments, at least one of the number of first port groups and the number of second port groups is determined based on at least one of the following: port group information included in the DCI message, port group information included in the second SRS setting, the number of first ports corresponding to the first TPMI, the number of second ports corresponding to the second TPMI, the number of ports of the SRS resource included in the third SRS set, capability information corresponding to the first and second control resource set pools of the terminal device 220, and the measured signal quality of each port of the terminal device 220.

[0372] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the second information includes a third TPMI corresponding to a third SRI.

[0373] In some embodiments, the circuit is further configured to transmit a third SRS setting indicating a first SRS resource set associated with a first panel or first capability value set of the terminal device 220, and a second SRS resource set associated with a second panel or second capability value set of the terminal device 220. Furthermore, simultaneous use of resources included in the first and second first SRS resource sets is supported.

[0374] In some embodiments, the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, wherein the second information includes at least one TPMI associated with a transmit precoder selected from an uplink codebook, the transmit precoder having a number of ports corresponding to the sum of the number of ports associated with the first and second SRIs.

[0375] In some embodiments, if the third information indicates that the at least one uplink transmission is a CJT transmission, the at least one TPMI includes one of a fourth TPMI associated with the first and second SRIs, or a fifth and sixth TPMI jointly associated with the first and second SRIs.

[0376] In some embodiments, the circuit is further configured to receive transmit capability information from the terminal device 220 via at least two of the plurality of antenna port sets, the transmit capability information including at least one of a transmit mode associated with simultaneous transmission using the plurality of antenna port sets, a hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme, a first coherence type indicating panel-level coherence capability, a second coherence type indicating port-level coherence capability within the panel, a first full-power mode indicating panel-level full-power capability, or a second full-power mode indicating port-level full-power capability within the panel.

[0377] In some embodiments, the circuit is further configured to generate an SRS setting based on the transmission capability information and to transmit the SRS setting to the terminal device 220.

[0378] In some embodiments, the first coherence type, the second coherence type, the first full power mode, and the second full power mode are associated with at least one of the transmission mode, the hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme.

[0379] In some embodiments, the first coherence mode is one of the following: a first panel-level full-power mode indicating that full power is achieved regardless of the number of panels used for the at least one uplink transmission; a second panel-level full-power mode indicating that the full power can be supplied when all panels of the terminal device 220 are used for the at least one uplink transmission; or a third panel-level full-power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission, or when at least one specific TPMI or TPMI combination is configured.

[0380] In some embodiments, if the first full-power mode is a third panel-level full-power mode, the transmit capability information further includes information about the at least one specific TPMI or combination of TPMIs.

[0381] In some exemplary embodiments, the network device 210 includes a circuit that receives transmission information from a terminal device 220, the transmission information which includes a first waveform information contained in a DCI message or MAC CE message and used by the terminal device 220 to perform at least one uplink transmission, a second waveform information used by the terminal device 220 when performing the most recent SRS transmission, and precoding information used by the terminal device 220 to perform at least one uplink transmission, and is configured to determine TPMI or a combination of TPMI based on the transmission information.

[0382] In some embodiments, the first waveform information is one of the following: a first instruction indicating whether a first or second waveform is activated; a second instruction indicating whether or not to switch the currently applied waveform; or information regarding a panel or capability value set of the terminal device 220 corresponding to a specific waveform.

[0383] In some embodiments, when the first waveform information and the precoding information are indicated by the DCI information, determining the TPMI or TPMI combination includes one of the following: determining the TPMI or TPMI combination based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or TPMI combination based on the precoding information indicated by the DCI message and the second waveform information.

[0384] In some embodiments, when the first waveform information is indicated by the MAC CE message and the precoding information is indicated by the DCI information, determining the TPMI or TPMI combination includes determining the TPMI or TPMI combination based on the first waveform information and the precoding information until the first waveform information is used when performing the latest SRS.

[0385] In some embodiments, the first waveform information is represented by an SRS resource having a first pre-configured correspondence to a specific waveform, or a set of SRS resources having a second pre-configured correspondence to a specific waveform.

[0386] In some embodiments, when the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index that is set to have different precoding matrices in a first codebook for the first waveform and a second codebook for the second waveform.

[0387] In some embodiments, the at least one uplink transmission is a single-layer transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}.

[0388] Figure 15 is a schematic block diagram of a device 1500 suitable for implementing an embodiment of the present disclosure. Device 1500 can be considered as another exemplary embodiment of the terminal device 220 and network devices 210-1 and 210-2 shown in Figures 2A to 2C. Thus, device 1500 may be implemented in the terminal device 220 and network devices 210-1 and 210-2, or as at least a part thereof.

[0389] As illustrated, the device 1500 comprises a processor 1510, a memory 1520 coupled to the processor 1510, a suitable transmitter (TX) and receiver (RX) 1540 coupled to the processor 1510, and a communication interface coupled to the TX / RX 1540. The memory 1520 stores at least a portion of the program 1530. The TX / RX 1540 is used for bidirectional communication. The TX / RX 1540 has at least one antenna to facilitate communication, although the access node referred to herein may actually have multiple antennas. The communication interface may represent any interface necessary for communication with other network elements, such as an X2 interface for bidirectional communication between eNBs, an S1 interface for communication between a Mobility Management Entity (MME) / Serving Gateway (S-GW) and an eNB, an Un interface for communication between an eNB and a relay node (RN), or a Uu interface for communication between an eNB and a terminal device.

[0390] Program 1530 is assumed to include program instructions that, when executed by the associated processor 1510, enable the device 1500 to operate according to embodiments of the present disclosure, as described herein with reference to Figures 3 to 14. Embodiments of the present disclosure may be implemented by computer software executable by the processor 1510 of the device 1500, by hardware, or by a combination of software and hardware. The processor 1510 may be configured to implement various embodiments of the present disclosure. Furthermore, a combination of the processor 1510 and the memory 1520 may form a processing means 1550 suitable for implementing various embodiments of the present disclosure.

[0391] Memory 1520 may be of any type suitable for a local technology network and may be implemented using any suitable data storage technology, such as non-temporary computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. Although only one memory 1520 is shown in device 1500, there may be several physically different memory modules in device 1500. Processor 1510 may be of any type suitable for a local technology network and may include, as non-limiting examples, one or more of general-purpose computers, dedicated computers, microprocessors, digital signal processors (DSPs), and processors based on multicore processor architectures. Device 1500 may have multiple processors, for example, application-specific integrated circuit chips that are time-dependent to a clock that synchronizes the main processor.

[0392] Overall, various embodiments of the Disclosure may be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some embodiments may be implemented in hardware, while others may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device. Although various embodiments of the Disclosure are illustrated and described using block diagrams, flowcharts, or any other pictorial representation, it should be understood that any blocks, devices, systems, techniques, or methods described herein may be implemented, in non-limiting examples, in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or any combination thereof.

[0393] This disclosure also provides at least one computer program product tangibly stored on a non-temporary computer-readable storage medium. The computer program product includes computer-executable instructions, such as instructions contained in a program module, which are executed within a device on a real or virtual processor of interest to perform the processes or methods described above with reference to Figures 3 to 14. Generally, a program module includes routines, programs, libraries, objects, classes, components, data structures, etc., that perform a specific task or realize a specific abstract data type. In various embodiments, the functions of program modules may be combined or separated among program modules as needed. The machine-executable instructions of a program module may be executed within a local or distributed device. In a distributed device, the program module may reside in both local and remote storage media.

[0394] Program code for performing the methods of this disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a dedicated computer, or other programmable data processing device, and when executed by the processor or controller, the program code may implement the functions / operations specified in the flowcharts and / or block diagrams. The program code may run entirely on a machine, partially on a machine, as an independent software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0395] The program code described above may be implemented on a machine-readable medium, which may be any tangible medium that can contain or store programs used by or associated with an instruction execution system, device, or apparatus. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatus, or any suitable combination of the aforementioned mediums. More specific examples of machine-readable storage media may include electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0396] While the operations have been described in a specific order, it should not be understood that, in order to obtain the desired results, these operations must be performed in the specific order shown, or in a sequential order, or that all of the described operations must be performed. In some cases, multitasking and parallel processing may be advantageous. Similarly, while some specific implementation details are included in the above discussion, these should not be interpreted as limitations on the scope of this disclosure, but rather as descriptions of features that may be specific to a particular embodiment. Some features described in the context of individual embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may be implemented separately or in any suitable subcombination in multiple embodiments.

[0397] While this disclosure has been described in language specific to structural features and / or methodological behavior, it should be understood that the disclosure as defined in the attached claims is not necessarily limited to the specific features or behaviors described above. Rather, the specific features and behaviors described above are disclosed as exemplary forms of implementing the claims.

Claims

1. A means for receiving downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, information regarding a first transmit precoding matrix indicator (TPMI), and information regarding a second TPMI. The system includes means for transmitting an uplink transmission to a network device based on the downlink control information, If the first information for simultaneous uplink transmission from multiple panels is set via a radio resource control (RRC) message, The first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, The aforementioned v1 is the first number of layers indicated by the first TPMI, The second TPMI is used to indicate a second precoder applied on at least one layer {v1...v2+v1-1} of the uplink transmission corresponding to the second SRI, The aforementioned v2 is equal to the second number of layers indicated by the second TPMI, The number of layers in the uplink transmission is the sum of v1 and v2. Terminal device.

2. If the second information for simultaneous uplink transmission of the multiple panels is set via the Radio Resource Control (RRC) message, The first TPMI is used to indicate the first precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate the second precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the second SRI. The terminal device according to claim 1.

3. The first precoder indicated by the first TPMI and the second precoder indicated by the second TPMI correspond to different antenna ports. The terminal device according to claim 1.

4. When the first information is set, the different layers of the uplink transmission are transmitted separately to the two transmit and receive points (TRPs). When the second information is set, the same layer of the uplink transmission is transmitted to the two TRPs. The terminal device according to claim 2.

5. The first SRI and the first TPMI are associated with a first sounding reference signal (SRS) resource set, and the second SRI and the second TPMI are associated with a second SRS resource set. The terminal device according to claim 1.

6. The parameter for the maximum number of layers is set in accordance with the first information or the second information. The same value of the aforementioned parameter is associated with the first TPMI and the second TPMI. The terminal device according to claim 2.

7. The transmission capability information associated with the first information or the second information is transmitted to the network device. The terminal device according to claim 2.

8. A means for transmitting downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, information regarding a first transmit precoding matrix indicator (TPMI), and information regarding a second TPMI. The system includes means for receiving an uplink transmission associated with the downlink control information from a terminal device, If the first information for simultaneous uplink transmission from multiple panels is set via a radio resource control (RRC) message, The first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, The aforementioned v1 is the first number of layers indicated by the first TPMI, The second TPMI is used to indicate a second precoder applied on at least one layer {v1...v2+v1-1} of the uplink transmission corresponding to the second SRI, The aforementioned v2 is equal to the second number of layers indicated by the second TPMI, The number of layers in the uplink transmission is the sum of v1 and v2. Network device.

9. If the second information for simultaneous uplink transmission of the multiple panels is set via the Radio Resource Control (RRC) message, The first TPMI is used to indicate the first precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate the second precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the second SRI. The network device according to claim 8.

10. The first precoder indicated by the first TPMI and the second precoder indicated by the second TPMI correspond to different antenna ports. The network device according to claim 8.

11. When the first information is set, the different layers of the uplink transmission are transmitted separately to the two transmit and receive points (TRPs). When the second information is set, the same layer of the uplink transmission is transmitted to the two TRPs. The network device according to claim 9.

12. The first SRI and the first TPMI are associated with a first sounding reference signal (SRS) resource set, and the second SRI and the second TPMI are associated with a second SRS resource set. The network device according to claim 8.

13. The parameter for the maximum number of layers is set in accordance with the first information or the second information. The same value of the aforementioned parameter is associated with the first TPMI and the second TPMI. The network device according to claim 9.

14. The transmission capability information associated with the first information or the second information is received from the terminal device. The network device according to claim 9.

15. A method performed by a terminal device, Receiving downlink control information including information about a first sounding reference signal resource indicator (SRI), a second SRI, a first transmit precoding matrix indicator (TPMI), and information about the second TPMI, This includes transmitting an uplink transmission to a network device based on the downlink control information, If the first information for simultaneous uplink transmission from multiple panels is set via a radio resource control (RRC) message, The first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, The aforementioned v1 is the first number of layers indicated by the first TPMI, The second TPMI is used to indicate a second precoder applied on at least one layer {v1...v2+v1-1} of the uplink transmission corresponding to the second SRI, The aforementioned v2 is equal to the second number of layers indicated by the second TPMI, The number of layers in the uplink transmission is the sum of v1 and v2. method.

16. A method performed by a network device, Transmitting downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, information regarding a first transmit precoding matrix indicator (TPMI), and information regarding a second TPMI. This includes receiving an uplink transmission associated with the downlink control information from the terminal device, If the first information for simultaneous uplink transmission from multiple panels is set via a radio resource control (RRC) message, The first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, The aforementioned v1 is the first number of layers indicated by the first TPMI, The second TPMI is used to indicate a second precoder applied on at least one layer {v1...v2+v1-1} of the uplink transmission corresponding to the second SRI, The aforementioned v2 is equal to the second number of layers indicated by the second TPMI, The number of layers in the uplink transmission is the sum of v1 and v2. method.

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