Terminal device, network device and method

Abstract

The embodiments of the present disclosure relate to a method, an apparatus, and a computer-readable storage medium for communication. The method includes receiving, in a terminal device deployed with multiple antenna port sets, a downlink control information (DCI) message for scheduling at least one uplink transmission via at least two of the multiple antenna port sets, the DCI message indicating first information on a sounding reference signal (SRS) resource associated with the at least one uplink transmission, second information on the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission, and transmitting the at least one uplink transmission to a network via the at least two of the multiple antenna port sets based on the DCI message. In this way, simultaneous transmission across multiple panels is appropriately supported.

Description

[Technical field]

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

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

[0003] In order to improve the transmission performance, it is required to support STxMP technology. Although there have been some discussions on STxMP, there are still several open issues that need to be discussed so that CB-based PUSCH STxMP can be better supported. Summary of the Invention [Problem to be solved by the invention]

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

[0005] In a first aspect, a method of communication is provided, comprising: receiving, in a terminal device deployed with multiple antenna port sets, a downlink control information (DCI) message for scheduling at least one uplink transmission over at least two of the multiple antenna port sets, the DCI message indicating first information on SRS resources associated with the at least one uplink transmission, second information on the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission; and transmitting the at least one uplink transmission to a network via the at least two of the multiple antenna port sets based on the DCI message.

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

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

[0008] In a fourth aspect, a method of communication is provided, comprising: transmitting, in a network device, to a terminal device deployed with multiple antenna port sets, a DCI message for scheduling at least one uplink transmission via at least two of the multiple antenna port sets, the DCI message indicating first information on SRS resources associated with the at least one uplink transmission, second information on the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission; and receiving from the terminal device the at least one uplink transmission transmitted via the at least two of the multiple antenna port sets based on the DCI message.

[0009] In a fifth aspect, a method of communication is provided, the method including: receiving, in a network device, transmission information from a terminal device, the transmission information including first waveform information used by the terminal device to perform at least one uplink transmission and included in a DCI message or a MAC CE message, second waveform information used by the terminal device when performing a latest SRS transmission, and precoding information used by the terminal device to perform at least one uplink transmission; and determining a TPMI or a combination of TPMIs based on the transmission information.

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

[0011] In a seventh aspect, there is provided a terminal device, the terminal device comprising circuitry configured to perform a method according to the second aspect of the present disclosure.

[0012] In an eighth aspect, there is provided a terminal device, the terminal device comprising circuitry configured to perform a method according to the third aspect of the present disclosure.

[0013] In a ninth aspect, there is provided a network device, said network device comprising circuitry configured to perform a method according to the fourth aspect of the present disclosure.

[0014] In a tenth aspect, there is provided a network device, said network device comprising circuitry configured to perform a method according to the fifth aspect of the present disclosure.

[0015] In an eleventh aspect, there is provided a computer readable medium having stored thereon instructions which, when executed on at least one processor, cause the at least one processor to perform a method according to any one of the above first to fifth aspects of the present disclosure.

[0016] It should be understood that this summary is not intended to identify key or essential features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure will be readily apparent from the following description. [Brief description of the drawings]

[0017] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description of several embodiments of the present disclosure in the accompanying drawings.

[0018] [Figure 1A] FIG. 2 illustrates a signaling flow for scheduling CB-based PUSCH transmission in a related solution.

[0019] [Figure 1B] FIG. 1 shows an example of a coherent type of related solution.

[0020] [Figure 1C] FIG. 2 shows an example of a full power mode in a related solution.

[0021] [Figure 2A] FIG. 1 illustrates an exemplary communications network in which embodiments of the present disclosure may be implemented. [Figure 2B] FIG. 1 illustrates an exemplary communications network in which embodiments of the present disclosure may be implemented. [Figure 2C] FIG. 1 illustrates an exemplary communications network in which embodiments of the present disclosure may be implemented.

[0022] [Diagram 3] FIG. 2 illustrates a signaling flow for communication in accordance with some example embodiments of the present disclosure.

[0023] [Figure 4A] 1A and 1B are diagrams illustrating examples of different transmission modes. [Figure 4B] 1A and 1B are diagrams illustrating examples of different transmission modes. [Figure 4C] 1A and 1B are diagrams illustrating examples of different transmission modes.

[0024] [Figure 5A] 1A and 1B are diagrams illustrating examples of different transmission modes. [Figure 5B] 1A and 1B are diagrams illustrating examples of different transmission modes. [Figure 5C] 1A and 1B are diagrams illustrating examples of different transmission modes. [Figure 5D] 1A and 1B are diagrams illustrating examples of different transmission modes.

[0025] [Figure 6] FIG. 1 illustrates an example for controlling transmission power.

[0026] [Figure 7] A diagram showing the timing for determining a TPMI or a combination of TPMIs based on the first waveform information and precoding information indicated by a DCI message.

[0027] [Figure 8] FIG. 11 is a diagram showing the timing for determining a TPMI or a combination of TPMIs based on precoding information indicated by a DCI message and second waveform information.

[0028] [Figure 9] A diagram showing the timing at which a TPMI or a combination of TPMIs based on first waveform information is indicated by an MEC CE message.

[0029] [Figure 10] 4 is a flowchart illustrating an example method performed by a terminal device according to some embodiments of the present disclosure.

[0030] [Figure 11] 4 is a flowchart illustrating an example method performed by a terminal device according to some embodiments of the present disclosure.

[0031] [Figure 12] 4 is a flowchart illustrating an example method performed by a terminal device according to some embodiments of the present disclosure.

[0032] [Figure 13] 4 is a flowchart illustrating an example method performed by a network device according to some embodiments of the present disclosure.

[0033] [Figure 14] 4 is a flowchart illustrating an example method performed by a network device according to some embodiments of the present disclosure.

[0034] [Figure 15] FIG. 1 is a schematic block diagram of an apparatus suitable for implementing embodiments of the present disclosure.

[0035] In the drawings, the same or similar reference numbers represent the same or similar elements. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] The principles of the present disclosure will now be described with reference to some exemplary embodiments. It should be understood that these embodiments are set forth for illustrative purposes only, to assist those skilled in the art in understanding and implementing the present disclosure, and do not imply any limitations on the scope of the present disclosure. The embodiments described herein can be implemented in various 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 meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0038] References in this disclosure to "one embodiment," "an embodiment," "an exemplary embodiment," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but each embodiment does not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Moreover, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is believed to be within the knowledge of one of ordinary skill in the art to affect such feature, structure, or characteristic in connection with other embodiments, whether or not explicitly described.

[0039] It should be understood that although the terms "first" and "second" etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the exemplary embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0040] The terms used herein are used only for the purpose of describing particular embodiments and are not intended to limit the exemplary embodiments. As used herein, the singular forms "a," "an," and "said" include the plural forms unless the context clearly indicates otherwise. It should be further understood that, as used herein, the terms "including," "including," "having," "comprising," "having," and / or "having" specify the presence of stated features, elements, and / or components, etc., but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0041] In some instances, values, procedures, or devices are referred to as "best," "lowest," "highest," "minimum," "maximum," etc. It should be understood that such descriptions are intended to illustrate that selections can be made from among many functional alternatives used, and that such selections are not necessarily better, smaller, higher, or otherwise more preferred than other selections.

[0042] The term "network device" as used herein means a device capable of providing or hosting a cell or coverage in which a terminal device can communicate. Examples of network devices include, but are not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a Node B for New Radio Access (gNB), a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), a low power node such as a femto node or a pico node, a satellite network device, an aircraft network device, etc. In the following, for the sake of explanation, some exemplary embodiments are 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 capable of wireless communication. By way of example and not limitation, a terminal device may be referred to as a communication device, user equipment (UE), subscriber station (SS), portable subscriber station, mobile station (MS), or access terminal (AT). Terminal devices may include mobile phones, cellular phones, smartphones, voice over IP (VoIP) phones, wireless local loop phones, tablets, wearable terminals, personal digital assistants (PDAs), portable computers, desktop computers, imaging terminals such as digital cameras, gaming terminals, music storage and playback devices, in-vehicle wireless terminals, wireless endpoints, mobile stations, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), USB dongles, smart devices, wireless customer-premises equipment (CPE), Internet of Things (IoT), and the like. Examples of such devices include, but are not limited to, 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 electronic devices, devices operating on commercial and / or industrial wireless networks, etc. In the following description, the terms "terminal device", "communication device", "terminal", "user equipment" and "UE" may be used interchangeably.

[0044] As used herein, the term "communication network" refers to a network conforming to any suitable 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), Narrow Band Internet of Things (NB-IoT), and the like. Furthermore, communication between terminal devices and network devices in a communication network may be realized according to any suitable generation of communication protocols, 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 now known or developed in the future. Embodiments of the present disclosure may be applied to various communication systems. In view of the rapid development of communication, there will naturally be future types of communication technologies and systems in which the present disclosure can be embodied, which should not be considered as limiting the scope of the present disclosure only to the aforementioned systems.

[0045] The term "circuitry" as used herein may refer to a hardware circuit and / or a combination of a hardware circuit and software. For example, a circuit may be a combination of analog and / or digital hardware circuitry and software / firmware. As yet another example, a circuit may be any portion of a hardware processor having software, including a digital signal processor, software, and one or more memories, that cooperate to cause a device, such as a terminal device or a 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 portion thereof, that requires software / firmware for operation, but the software may not be present if not required for operation. As used herein, the term "circuitry" also includes implementations of only a hardware circuit or one or more processors, or a portion of a hardware circuit or one or more processors and its (or their) associated software and / or firmware.

[0046] While the functions described herein may be performed in fixed and / or wireless network nodes in various exemplary embodiments, in other exemplary embodiments, the functions may be implemented in user equipment equipment (e.g., a mobile phone, a tablet computer, a laptop computer, a desktop computer, a mobile IOT device, or a fixed IOT device). For example, the user equipment equipment may include corresponding capabilities described in connection with the fixed and / or wireless network nodes, as appropriate. The user equipment equipment may be a user equipment and / or a control device, such as a chipset or processor, configured to control the user equipment when installed within the user equipment. Examples of such functions include a bootstrap server function and / or a home subscriber server, which may be implemented within the user equipment equipment by providing the user equipment equipment with software configured to cause the user equipment equipment to perform from the perspective of these functions / nodes.

[0047] The wireless communication network includes at least one network device and at least one terminal device, and the terminal device may transmit an uplink transmission (eg, a PUSCH transmission) to the network device.

[0048] As mentioned above, CB-based PUSCH transmission is a conventional uplink transmission scheme. During CB-based PUSCH transmission, the vector

number

number

[0049] Table 1 below is an example codebook for four-layer transmission with four antenna ports, with transform precoding disabled. [Table 1]

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

[0051] An example of a UE capability is the coherence type supported by the terminal device, where the coherence type may be one of fullCoherent, partialCoherent, and nonCoherent. In one particular exemplary embodiment, the coherence type may be reported using an information element (IE) pusch-TransCoherence. Figure 1B illustrates an example 170 of coherence types in a related solution. Additionally, only a subset of precoders may 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 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). FIG. 1B illustrates an example 180 of a full power mode in a related solution. Specifically, in full power mode 0, the terminal device can provide a maximum output power of 23 dBm since the transmission power is divided equally between the non-zero PUSCH antennas. In full power mode 1, the terminal device can transmit with a total maximum output power of 23 dBm on the PUSCH using precoder {1,1}, which means that precoders {1,0} and {0,1} cannot provide maximum output power. In the case of full power mode 2, the terminal device can transmit with a total maximum output power of 23 dBm on the PUSCH using precoder {1,1} through the TPMI reporting and antenna virtualization procedures.

[0053] Additionally, full power modes may be reported in IEs 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, only a subset of precoders may be used for a particular full power capability.

[0054] Other UE capabilities may be 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 to refer to FIG. 1A, the network device may configure the CB-based PUSCH by sending a radio resource control (RRC) (re)configuration message 120. Some information configured by the RRC (re)configuration message is: SRS settings, PUSCH settings, such as transformPrecoder, maxRank, codebookSubset and full power mode, Demodulation reference signal (DMRS) settings, e.g. maxLength and dmrs-Type, It is shown as follows.

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

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

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

[0059] As mentioned above, it is proposed that a terminal device may be deployed to have more than one panel. Furthermore, it is required to support STxMP technology to improve transmission performance. In particular, it is required that multiple panels be deployed in a terminal device, the multiple panels can be activated at one time, and one or more panels can be used for transmission simultaneously.

[0060] Currently, the STxMP technology is not fully discussed, and more will be discussed in the next 3GPP Release 18.

[0061] Specifically, it is required to consider and, if necessary, specify the following in order to facilitate simultaneous multi-panel uplink transmission to achieve higher uplink throughput / reliability: focus on FR2 and multi-TRP; assume up to two transmit and receive points (TRP) and up to two panels; and target CPE / FWA / vehicles / industrial equipment (where applicable). > Uplink precoding instructions for PUSCH where no new codebook for simultaneous multi-panel transmission is introduced ◆ Considering single DCI and multi-DCI based multi-TRP operation, the total number of layers is maximum 4 across all panels, and the total number of codewords is maximum 2 across all panels. > Uplink beam direction for physical uplink control channel (PUCCH) / PUSCH, where a unified TCI framework extension is envisaged in Objective 2, considering single DCI and multi-DCI based multi-TRP operation ◆ In case of multi-DCI based multi-TRP operation, only PUSCH+PUSCH or PUCCH+PUCCH are transmitted across two panels in the same component carrier.

[0062] Although some discussions have already been held about STxMP, it can be seen that such discussions are mainly about some assumptions and generalized concepts, rather than specific and clear technical solutions. In other words, there are several open issues that need to be discussed.

[0063] One open question is how to exchange capability information. For example, terminal devices with multiple panels at the same time may have more complex coherence types, since the antenna ports may be in the same panel or across multiple panels. Furthermore, for single or multiple panels, total power constraints per UE or per panel may be considered.

[0064] Another open problem is how to configure the SRS resource set associated with the CB-based PUSCH STxMP. Specifically, in the related solution, the SRS resource sets applicable to the PUSCH scheduled by DCI format 0_1 ​​and DCI format 0_2 are defined by the entries of the upper layer parameters srs-ResourceSetToAddModList and srs-ResourceSetToAddModListDCI-0-2 in SRS-config, respectively. Furthermore, if the upper layer parameter usage in SRS-ResourceSet is set to "codebook", only one SRS resource set can be configured in srs-ResourceSetToAddModList, and if the upper layer parameter usage in SRS-ResourceSet is set to "codebook", only one SRS resource set can be configured in srs-ResourceSetToAddModListDCI-0-2. However, one SRS resource set may not be enough to support the CB-based PUSCH STxMP.

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

[0066] Additionally, in related 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 related solutions, the waveform information used for the PUSCH is indicated by an RRC message. However, the transmission period of the RRC message is relatively long. Therefore, it is required to support dynamic waveform switching. How to realize dynamic waveform switching and how to determine the precoder when dynamic waveform switching is enabled have not yet been solved.

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

[0068] In this disclosure, some terms may refer to the same or similar physical meaning and may be used interchangeably. Some illustrative examples are given below. The terms “ports used for uplink transmission”, “ports used for PUSCH transmission”, “ports with non-zero PUSCH transmit power” and “ports with non-zero uplink transmit power” may be used interchangeably. The terms “panel used for uplink transmission”, “panel used for PUSCH transmission”, “panel with non-zero PUSCH transmit power” and “panel with non-zero uplink transmit 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 state”, “transmit configuration indicator”, “quasi co-location (QCL)”, “quasi co-location”, “QCL ​​parameters”, “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-controlled resource set pool", "multi-TRP", "multi-TCI state", "multi-TCI", "multi-CORESET" and "multi-controlled resource set pool", "MTRP" and "M-TCI", "M-TPR" may be used interchangeably. The terms "resource", "resources in a resource set", and "resource set" may be used interchangeably. The terms "group," "subset," and "set" may be used interchangeably.

[0069] Furthermore, a panel as described herein refers to one or more antenna elements deployed in a certain area of ​​a terminal device. A panel as described herein may refer to a downlink panel, an uplink panel, a panel type, a panel status, a capability value set, a reference signal (RS) resource, an RS resource set, an antenna port, an antenna port group, a beam, or a beam group. In this regard, the terms (and their equivalents) "panel", "panel type", "antenna port set", "antenna element", and "antenna array" may be used interchangeably.

[0070] Additionally, the panel information described in this specification may refer to UE panel index / identification (ID), downlink panel ID, uplink panel ID, panel type indication, panel status indication, capability set index, RS resource ID, RS resource set ID, antenna port ID, antenna port group ID, beam ID, beam group ID.

[0071] As used herein, the term "TRP" refers to an antenna array (having one or more antenna elements) available to a network device located at a particular geographic location. Although some embodiments of the present disclosure have been described with reference to a multi-TRP scenario (or a single-TRP scenario) as an example, these embodiments are for illustrative purposes only and are intended to assist those skilled in the art in understanding and implementing 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 various ways different from the way described below.

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

[0073] As used herein, a "network" / "network device" refers to one or more network devices. Thus, the terms "network," "network device," and "one or more network devices" may be used interchangeably. Example environment

[0074] 2A illustrates an exemplary communications network 200 (which may also be referred to as a "network" for brevity) in which embodiments of the present disclosure may be implemented. Communications network 200 includes network device 210-1 and optional network device 210-2 (collectively or individually referred to as network device 210). Network device 210 may provide services to end device 220. For purposes of explanation, network device 210-1 will be referred to as a first network device 210-1, and network device 210-2 will be referred to as a second network device 210-2. Additionally, first network device 210-1 and second network device 210-2 may be referred to as a first network device 210-1 and a second network device 210-2. 210-2 may communicate with each other.

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

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

[0077] Additionally, the terminal device 220 may be deployed to have more than one panel. As shown in Fig. 1A, the terminal device 220 is deployed to have panels 225-1 and 225-2. Hereinafter, the 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. In one specific example, the first panel 225-1 corresponds to a first set of antenna ports and the second panel 225-2 corresponds to the second antenna port set.

[0079] Additionally, in some embodiments, panels 225-1 and 225-2 may each correspond to a different set of performance parameters.

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

[0081] Further, in the embodiment of Fig. 2A, multi-TRP transmission is also supported. As shown in Fig. 1A, the terminal device 220 may communicate with two TRPs, namely, TRPs 230-1 and 230-2 (collectively or individually referred to as TRPs 230). For purposes of explanation, 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] Further, to support multiple TRPs and / or multiple panels, the network device 210 may include one or more TRPs. For example, the network device 210 may be coupled to multiple TRPs in different geographic locations to achieve better coverage. In one particular exemplary embodiment, the first network device 210-1 includes 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 include 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 a first control resource set pool and the second TRP 230-2 is associated with a second control resource set pool.

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

[0085] As 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 included in the same serving cell or different serving cells, in other words, both inter-cell and intra-cell transmissions are supported by the embodiment of FIG.

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

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

[0089] communication networkCommunications in 200 may conform to any suitable standard, including, but not limited to, Long Term Evolution (LTE), LTE-Evolution, LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Global System for Mobile Communications (GSM), and the like. Furthermore, communications may be performed according to any generation of communications protocols now known or developed in the future. Examples of communications 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 networks, or sixth generation (6G) communications protocols.

[0090] It should be understood that the number of devices (i.e., terminal device 220, panel 225, network device 210, TRP 230, and cell 240) and their connection relationships and types as shown in Figures 2A-2C are used for illustration purposes only and do not imply any limitations. Communication network 200 may include any suitable number of devices suitable for implementing embodiments of the present disclosure. Process Example

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

[0092] The process 300 may involve the terminal device 220, the network device 210 (either or both of the first network device 210-1 and the second network device 210-2), and optionally the 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 antenna port set (represented as ports (p0, ..., p1-1)), and the second panel 225-2 corresponds to a second antenna port set (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 / the second network device 210-2. Additionally, the first TRP 230-1 and the second TRP 230-2 and may be in the same serving cell and in different serving cells.

[0094] In the following text, some embodiments of the present disclosure will be described with reference to two TRPs and two panels, but these embodiments are for illustrative purposes only, to help those skilled in the art understand and practice the present disclosure, and do not imply any limitations on the scope of the present disclosure. It should be understood that the contents of the present disclosure described herein can be implemented in various ways different from the methods described below.

[0095] Further, it should be understood that the operations in 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 by any suitable 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 of the same or similar contents are omitted here.

[0096] Additionally, in the following description, some interactions (e.g., exchange of capability-related information, configuration / scheduling / activation of resources / transmissions, etc.) are performed between the terminal device 220 and the network device 210. It should be understood that the interactions may be realized in one signaling / message or multiple signaling / messages, including system information, RRC messages, DCI messages, uplink control information (UCI) messages, MAC CE, etc. The present disclosure is not limited in this respect.

[0097] In some embodiments, the one or more interactions may be specific to a particular panel, TRP, capability, control resource set (CORESET), etc. In this way, CB-based PUSCH STxMP can be flexibly configured / activated.

[0098] Also, although features / operations are described separately in particular exemplary embodiments, it should be understood that these features / operations described in different exemplary embodiments may be used in any suitable combination, unless expressly indicated to the contrary. Example Process for Exchanging Transmission Capability Information

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

[0100]

[0036] Now referring to FIG. 3, FIG. 3 illustrates a signaling flow 300 for communication in accordance with some example embodiments of the present disclosure. As shown in FIG. 3, the terminal device 220 transmits transmission capability information to the network device 210 ( 310 During this interactive procedure, certain rules associated with the 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, the transmission capability information is transmitted via an RRC message, hi some other embodiments, the transmission capability information is transmitted via a DCI message, a MAC CE, or any suitable signaling / message.

[0102] In some embodiments, the transmission capability information includes a transmission mode associated with the STxMP (i.e., simultaneous transmission using the multiple panels / antenna port sets). Some transmission modes defined in this disclosure are described as follows:

[0103] In some exemplary embodiments, the transmission mode is: Coherent joint transmission (CJT) using multiple activated panels / antenna port sets; Non-coherent joint transmission (NCJT) using multiple activated panels / antenna port sets; > Different tiers or different tiers to different TRPs for each panel / antenna port set, > Different TB for each panel / antenna port set or different TB to different TRP, One of the following: same transport block (TB) space division multiplexing (SDM) repetition (for brevity, referred to as SDM repetition) PUSCH per panel / antenna port set or same TB SDM repetition PUSCH to different TRPs.

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

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

[0106] In the specific example of FIG. 4B, one codeword (CW), ie, 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 the first panel 225-1, and layers (v1,...,v-1) are transmitted by the second panel 225-2, where v1 is the number of layers transmitted through the first panel 225-1, and v is the total number of layers of the CW through both the first and second panels 225. As shown in FIG. 4B, layers #1 and #2 are transmitted through the first panel 225-1, and layers #3 and #4 are transmitted through 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 is ​​used by the first panel 225-1, and a second precoding matrix is ​​used by the second panel 225-2. As shown in FIG. 4B, precoding matrix #1 / precoder #1 is used by the first panel 225-1, and precoding matrix #2 / precoder #2 is used by the 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 the first panel 225-1 and directed to the first TRP 230-1, and a second beam may be formed by the second panel 225-2 and directed to the second TRP 230-2. In this way, the first and second TRPs 230 may jointly process the received PUSCH 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] FIG. 4C shows an example of a transmit mode SDM repeat. 440 As shown in Figure 4C, the first panel 225-1 and the second panel 225-2 are non-coherent, and the antenna ports within the same panel are coherent.

[0112] In some embodiments, the same TB is sent to different TRPs simultaneously through different panels. Specifically, the same number of layers is assumed for different panels. Specifically, layers (0,..., v-1 ) is transmitted by the first panel 225-1 and the second panel 225-2, where v is the total number of layers of the CW through 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 is ​​used by the first panel 225-1, and a second precoding matrix is ​​used by the second panel 225-2. As shown in FIG. 4C, precoding matrix #1 / precoder #1 is used by the first panel 225-1, and precoding matrix #2 / precoder #2 is used by the 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 the first panel 225-1 and directed to the first TRP 230-1, and a second beam may be formed by the second panel 225-2 and directed to the second TRP 230-2. Thus, the first and second TRPs 230 may jointly (by soft combining) or separately process the received PUSCH in an uplink transmission (e.g., CB-based PUSCH STxMP).

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

[0116] In some embodiments, the digital precoding scheme comprises: Joint precoding across panels / multiple TRPs, Separate precoding for each panel / each TRP, > Different layers / TB for each panel / TRP.

[0117] In some embodiments, the analog beamforming scheme comprises: Fully connected: one antenna port is connected to all antenna elements, > The same beam is formed by multiple panels / towards different TRPs, Subarray connection: one antenna port is connected to a subset of antenna elements, > Different beams are formed by one panel / towards different TRPs.

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

[0119] Other transmission capability information is The first coherence type indicates the panel-level coherence capability; A second coherence type that indicates the port-level coherence capability within the panel; The first full power mode indicates full power capability at the panel level, or Includes a second full power mode, which indicates 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, i.e., panel-level full power mode is supported and the terminal device 220 can transmit at full power even if a subset of panels is 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 provided when all panels of the terminal device 220 are used for uplink transmission, i.e., panel-level full power mode 1 is supported and the terminal device 220 can transmit at maximum power only when all panels are used for transmission, or A third panel-level full power mode indicating that full power is possible if all panels of the terminal device 220 are used for uplink transmission or if at least one specific precoding matrix indicator (TPMI) or TPMI combination is set, i.e. panel-level full power mode 2 is supported and the terminal device 220 can transmit at full power only if all panels are used for transmission or if a reported TPMI / TPMI combination is indicated.

[0121] Additionally, in some embodiments, when the first full power mode is a third panel level full power mode, the transmission capability information further includes information regarding the at least one particular TPMI or combination of TPMIs.

[0122] Additionally, the coherence type (including the first coherence type and the second coherence type) and the full power mode (including the first full power mode and the second full power mode) depend on one or both of the supported STxMP modes (i.e., transmission 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 transmission modes. 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 a hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme. Such associations are described with reference to FIGS. 5A-5D.

[0123] Figure 5A shows an antenna structure in which a combination of joint precoding and full connection is supported. In the example of Figure 5A, the coherent type is full coherent, and both the first and second can be 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 PUSCH transmission).

[0124] FIG. 5B shows an antenna structure in which a combination of separate precoding and subarrays (i.e., separate digital precoding and subarray-connected analog beamforming) is supported. In the example of FIG. 5B, the transmission mode is NCJT (e.g., non-coherent STxMP PUSCH transmission), and the coherence type is partial coherence (i.e., fully coherent within the first / second panel and partially coherent within the first panel). 225 -1 and 2nd Panel 225In addition, in the example of FIG. 5B, the first full power mode is full power mode 1 or 2 (i.e., the first panel 225 -1 and 2nd Panel 225 -2) and the second full power mode is full power mode 0 (i.e. full power mode 0 in the first / second panels). 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] FIG. 5C shows an antenna structure in which a combination of joint precoding and subarrays (i.e., joint precoding and subarray-connected analog beamforming) is supported. In the example of FIG. 5C, the coherence type is partial coherence (i.e., complete coherence within the first / second panel and partial coherence within the first panel). 225 -1 and 2nd Panel 225 In addition, in the embodiment of FIG. 5C, the first full power mode is full power mode 1 or 2 (i.e., the first panel 225 -1 and 2nd Panel 225 -2) and the second full power mode is full power mode 0 (i.e. full power mode 0 in the first / second panel). Such an antenna structure is particularly suitable for uplink simultaneous SDM repetitions.

[0126] 5D shows an antenna structure in which a combination of separate precoding and full connection (i.e., separate precoding and full connection analog beamforming) is supported. In the example of FIG. 5D, the coherent type is full 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 set corresponds to a panel (physical or logical entity) deployed on the terminal device 220 .

[0128] Alternatively or additionally, in some embodiments, a capability set may correspond to a particular panel type. In one exemplary embodiment, a panel type may be defined by the number of SRS ports supported, e.g., Type #1 corresponds to a 1-port SRS, Type #2 corresponds to a 2-port SRS, Type #3 corresponds to a 4-port SRS, etc.

[0129] Alternatively or additionally, in some embodiments, a capability score set may correspond to a particular panel status. In one exemplary embodiment, a panel status may be defined by the number of activated panels, e.g., status #1 corresponding to a single panel transmission, status #2 corresponding to a two panel simultaneous transmission, status #3 corresponding to a four panel simultaneous transmission, etc. This exemplary embodiment is particularly suited to scenarios in which multiple panel simultaneous transmissions are supported.

[0130] Due to the different interpretations of the capability value sets, terminal device 220 may report transmission capability information via different combinations of the capability value sets, although this disclosure is not limited in this respect.

[0131] In one specific example, the terminal device 220 transmits the following set of capability values ​​to the network device 210 as transmission capability information: Capability Value Set #1: Includes one of the following: maximum number of SRS ports per panel (e.g., 2 ports), number of repeated capability value sets # (e.g., 2, suggesting that the terminal device 220 has two symmetrical panels), 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: a maximum number of SRS ports for STxMP (e.g., 4 ports); a transmission 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 a panel-level coherence capability; the second coherence type indicating a port-level coherence capability within a panel; the first full power mode indicating a panel-level full power capability; and the second full power mode indicating a port-level full power capability within a panel.

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

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

[0134] 3, the network device 210 may generate and send 320 to the terminal device 220 an SRS configuration (e.g., an RRC message) that may configure SRS resources for performing PUSCH STxMP. In some embodiments, the SRS configuration includes the number of SRS resource sets, the SRS resources in the SRS resource set, the SRS port, etc. Additionally, in some embodiments, an SRS resource set (including "usage"="codebook") may be dedicated for STxMP PUSCH.

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

[0136] Additionally, one or more SRS resource sets may be indicated in the SRS configuration. In one particular exemplary embodiment, the terminal device 220 includes two two-port panels (e.g., a first panel 225-1 and a second panel 225-2) and may use one or both of the panels for uplink transmission to two TRPs (e.g., TRP 230). In this particular exemplary embodiment, the associated SRS resource sets that may be indicated by the SRS configuration are: A first SRS resource set associated with a first panel or a first capability set of the 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 a second panel or a second capability set of the terminal device 220, i.e., 2 Panel 225-2 or 2 SRS Resource Set #2 for TRP 230-2 of 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, i.e., an SRS resource set #3 for STxMP PUSCH; The present invention includes at least a portion of the above.

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

[0138] Furthermore, in this 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, such as 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 aggregated uplink TCI states or two aggregated combined TCI states using two reference signals in the QCL-info configuration or spatial relationship information, or by applying two beams reported with panel information in the correspondence report. Additionally, one uplink beam is applied to one port group.

[0141] Thus, a dedicated SRS resource set can be configured for the PSUCH STxMP.

[0142] Terminal device 220 may then perform an SRS transmission to network device 210 (330). By measuring the SRS transmission, network device 210 may generate and send an uplink grant (i.e., a DCI message) to terminal device 220 for scheduling an uplink transmission (i.e., a STxMP PUSCH) over at least two of the multiple antenna port sets (340). In particular, the DCI message indicates first information regarding SRS resources associated with the uplink transmission, second information regarding precoding information associated with the uplink transmission, and third information indicating a transmission mode of the uplink transmission.

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

[0144] According to some embodiments of the present disclosure, the configuration message (i.e., RRC message) and the uplink grant (i.e., DCI message) are enhanced. In an exemplary aspect, an SRS resource set dedicated for StxMP may be introduced and configured via an RRC message. In another exemplary aspect, the improved DCI message may include a field that dynamically indicates 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. In this way, it is possible to properly configure and schedule the PUSCH STxMP.

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

[0146] In some embodiments, to schedule an uplink transmission, first information regarding SRS resources associated with the at least one uplink transmission; second information regarding the precoding information associated with the at least one uplink transmission; or third information indicating a transmission mode of the at least one uplink transmission; may be utilized.

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

[0148] Including the first and second information in the DCI message maximizes compatibility with current uplink transmission scheduling procedures, and including the third information in the DCI / RRC / MAC CE message maximizes the possibilities for indicating the STxMP mode.

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

[0150] For better understanding, some examples will be described one by one. Example process associated with three SRS resource sets

[0151] In some embodiments, the terminal device 220 includes: A first SRS resource set associated with a first panel or a first capability set of the terminal device 220; A second SRS resource set associated with a second panel or a second capability 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 sets of the terminal device 220; A first SRS setting indicating

[0152] In some embodiments, the SRS resources included in the third SRS resource set may be used first by terminal device 220 so that network device 210 can determine the number of layers and the precoder for the subsequent PUSCH transmission.

[0153] According to some embodiments of the present disclosure, the first SRS resource set and the second SRS resource set may be configured / triggered on demand, and DCIs with 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 of 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 of the SRS resources in the second SRS resource set.

[0155] In some embodiments, when the transmission mode is NCJT, the network device 210 may configure / trigger the SRS resources included in the SRS resource sets #1 and #2 based on the total rank obtained in the SRS resource set #3, thereby obtaining a precoder 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 the first information and the 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.

[0156] In some embodiments, when the uplink transmission is an NCJT transmission and the third information indicates that the uplink transmission is transmitted using one codeword, 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 one codeword.

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

[0158] In some embodiments, if the uplink transmission is an NCJT transmission and the third information indicates that the uplink transmission is transmitted using a first codeword and a second codeword, 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, a first TPMI denotes a first precoder applied to layers (0, ..., v1-1) corresponding to a first SRI, and a second TPMI denotes a second precoder applied to layers (0, ..., v2-1) corresponding to a second SRI, where v1 is the layer number of the first CW and v2 is the layer number 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 view 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 the first information and the 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 the third information indicates that the uplink transmission is an SDM repetition, the number of layers associated with the first TPMI and the number of layers associated with the second TPMI are the same.

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

[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 resources associated with the first SRI, and the number of ports associated with the second TPMI corresponds to the number of ports of the SRS resources 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 may be configured for the PUSCH transmission among a first maxRank value (e.g., r1) associated with the first TPMI, a second maxRank value (e.g., r2) associated with the second TPMI, and a third maxRank value (e.g., r, r=r1+r2) associated with both the first and second TPMIs. In some embodiments, only the third maxRank value is configured, 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, e.g., determined to be the maximum supported number of SRS ports or the maximum supported uplink tier for the first panel 225-1, the second panel 225-2 and both the first and second panels 225, respectively. Additionally, the same maxRank value is associated with the first TPMI and the second TPMI.

[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 of the following codebookSubset values ​​may be configured for the PUSCH transmission: 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. The first, second, and third codebookSubset values ​​are determined based on the UE capabilities, e.g., to be of coherent type for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. The value of codebookSubset may be one of fullAndPartialAndNonCoherent, partialAndNonCoherent, and nonCoherent. Additionally, the same codebookSubset value is associated with the first TPMI and the second TPMI.

[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 may be configured for the PUSCH transmission 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. The first, second, and third fullpowermode values ​​are determined based on the UE capabilities, e.g., to be full power modes in the first panel 225-1, the second panel 225-2, and each panel 225, respectively. The fourth fullpowermode value is determined based on the UE capabilities, e.g., to be a panel-level full power mode. Any of the first, second and third fullpowermode values ​​may be one of: a port-level fullpowermode0, a port-level fullpowermode1 and a port-level fullpowermode2. The fourth fullpowermode value may be one of: a panel-level fullpowermode0, a panel-level fullpowermode1 and a panel-level fullpowermode2. Additionally, the same fullpowermode value is associated with the first TPMI and the second TPMI.

[0168] In some embodiments, when the transmission mode is CJT, the network device 210 may calculate the rank by measuring the four-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 the 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 indicates a third precoder applied on layer (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 having a higher number of SRS ports. Alternatively, the third SRS resource set and the third SRI correspond to an SRS resource set having a higher number of SRS ports.

[0170] 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 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., the third TPMI) and one SRI (e.g., the third SRI), a fourth maxRank value associated with the third TPMI may be configured for PUSCH transmission. The fourth maxRank value is determined based on the UE capabilities, for example, to be the maximum supported SRS port number or the maximum supported uplink layer for both the first and second panels 225.

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

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

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

[0175] In some embodiments, the terminal device 220 includes: Receiving a first SRS configuration indicating a third SRS resource set associated with both the first and second panels or both the first and second sets of capability values ​​of the terminal device 220.

[0176] That is, the third SRS resource set is transmitted alone, and the first and second SRS resource sets are not necessary. In other words, the SRS resource set (including “usage”=“codebook”) may be dedicated for the PUSCH STxMP.

[0177] Thus, 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 an uplink codebook. Specifically, the at least one transmit precoder has a corresponding port number corresponding to the at least one TPMI. In one particular exemplary embodiment, a four-port SRS is transmitted and a two-port TPMI is used (e.g., for an NCJT STxMP mode scenario).

[0178] In some embodiments, when the transmission mode is NCJT, the network device 210 calculates the restricted ranks in different port groups (e.g., port group #1 and port group #2), respectively, and each TRP can still determine the panel rank and precoder per TRP / per 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 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.

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

[0180] Specifically, in some embodiments, the number of ports in the first port group and / or the number of ports in the second port group are determined by the terminal device 220 and the network device 210 as follows: -Port group information included in DCI messages, A first port number corresponding to a first TPMI, A second port number corresponding to a second TPMI, The number of ports of the SRS resources in the third SRS resource set, Port group information contained in the second SRS configuration, or Capability information corresponding to the first and second control resource set pools of the terminal device 220; 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 of the SRS resources in the third SRS resource set.

[0182] Additionally, each TRP may perform measurement 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. In this way, even without explicit port group configuration, the network device 210 can determine the number of first port groups and the number of second port groups.

[0183] In some embodiments, when the uplink transmission is an NCJT transmission and the third information indicates that the uplink transmission is transmitted using one codeword, 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 one codeword.

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

[0185] In some embodiments, if the uplink transmission is an NCJT transmission and the third information indicates that the uplink transmission is transmitted using a first codeword and a second codeword, 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, a first TPMI denotes a first precoder applied to layer (0, ..., v1-1) and a second TPMI denotes a second precoder applied to layer (0, ..., v2-1), where v1 is the layer number of the first CW and v2 is the layer number of the second CW.

[0187] In some embodiments, if the transmission mode is SDM, network device 210 determines on a per port group basis. Thus, in some embodiments, if 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 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.

[0188] The determination of the number of first port groups and the number of second port groups is similar to that described for the NCJT scenario, and for the sake of brevity, the same or similar description will be omitted here.

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

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

[0191] In one particular exemplary embodiment, when the third SRS resource set corresponds to SRS resources for four ports and the first and second port groups each include resources for two ports, the first TPMI is associated with the first port group (i.e., the two ports) and the second TPMI is associated with the second port group (i.e., the other two ports).

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

[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 a first group of ports of SRS resources associated with the third SRI, and the number of ports associated with the second TPMI corresponds to the number of ports in a second group of ports of SRS resources 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 may be configured for the PUSCH transmission among a first maxRank value (e.g., r1) associated with the first TPMI, a second maxRank value (e.g., r2) associated with the second TPMI, and a third maxRank value (e.g., r, r=r1+r2) associated with both the first and second TPMIs. In some embodiments, only the third maxRank value is configured, 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, such as to be the maximum supported number of SRS ports or the maximum supported uplink tiers for the first panel 225-1, the second panel 225-2 and both the first and second panels 225, respectively. Additionally, the same maxRank value is associated with the first TPMI and the second TPMI.

[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 of 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 configured for the PUSCH transmission. The first, second, and third codebookSubset values ​​may be determined based on the UE capabilities, e.g., to be of coherent type for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. The value of codebookSubset may be one of fullAndPartialAndNonCoherent, partialAndNonCoherent, and nonCoherent. Additionally, the same codebookSubset value is associated with the first TPMI and the second TPMI.

[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 may be configured for the PUSCH transmission 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. The first, second, and third fullpowermode values ​​may be determined based on UE capabilities, e.g., to be full power modes in 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 capabilities, e.g., to be a panel-level full power mode. Any of the first, second and third fullpowermode values ​​may be one of: a port-level fullpowermode0, a port-level fullpowermode1 and a port-level fullpowermode2. The fourth fullpowermode value may be one of: a panel-level fullpowermode0, a panel-level fullpowermode1 and a panel-level fullpowermode2. Additionally, the same fullpowermode value is associated with the first TPMI and the second TPMI.

[0197] 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.

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

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

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

[0201] It should be understood that depending on the bit width of the associated field (ie, the third 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 (with 'usage' = 'codebook') that is dedicated for PUSCHSTxMP.

[0203] In some embodiments, the terminal device 220 includes: A first SRS resource set associated with a first panel or a first capability set of the terminal device 220; A second SRS resource set associated with a second panel or a second capability set of the terminal device 220; and A third SRS setting indicating

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

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

[0206] As one particular exemplary embodiment, for a terminal device with two two-port panels, one or both can be used for uplink transmission to two TRPs. In this 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 two-port SRS transmissions can be performed, which can determine a four-port TPMI (especially for CJT STxMP mode). Furthermore, in this particular specific embodiment, the first two-port SRS resource (corresponding to the first SRS set) is transmitted using ports {0,1}, and the second two-port SRS resource (corresponding to the second SRS set) is transmitted using a port with a port ID offset, for example, ports {2,3}.

[0207] Thus, in some embodiments, 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 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, in the case of an NCJT transmission, the total rank is determined by a first rank obtained with the first SRS resource set and a second rank obtained with the second SRS set. 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 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.

[0209] In some embodiments, when the uplink transmission is an NCJT transmission and the third information indicates that the uplink transmission is transmitted using one codeword, 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 one codeword.

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

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

[0212] In one particular exemplary embodiment, a first TPMI denotes a first precoder applied to layers (0, ..., v1-1) corresponding to a first SRI, and a second TPMI denotes a second precoder applied to layers (0, ..., v2-1) corresponding to a second SRI, where v1 is the layer number of the first CW and v2 is the layer number 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 view 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 an SDM transmission, the appropriate rank is determined to be min(first rank obtained with the first SRS resource set, second rank obtained with the second SRS set). 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 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.

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

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

[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 may be configured for the PUSCH transmission among a first maxRank value (e.g., r1) associated with the first TPMI, a second maxRank value (e.g., r2) associated with the second TPMI, and a third maxRank value (e.g., r, r=r1+r2) associated with both the first and second TPMIs. In some embodiments, only the third maxRank value is configured, 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 supported number of SRS ports or the maximum supported uplink tiers 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 of 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 configured for the PUSCH transmission. The first, first, and third codebookSubset values ​​may be determined based on UE capabilities, e.g., to be coherent types for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively. The value of codebookSubset may be one of fullAndPartialAndNonCoherent, partialAndNonCoherent, and 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 may be configured for the PUSCH transmission 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. The first, first, and third fullpowermode values ​​may be determined based on UE capabilities, e.g., to be full power modes in 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 capabilities, e.g., to be panel-level full power mode. Any of the first, second and third fullpowermode values ​​may be one of: port-level fullpowermode0, port-level fullpowermode1, and port-level fullpowermode2. The fourth fullpowermode value may be one of: panel-level fullpowermode0, panel-level fullpowermode1, and panel-level fullpowermode2.

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

[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 resources associated with the first SRI and the number of ports of the SRS resources associated with the second SRI.

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

[0224] In some embodiments, when the transmission mode is CJT, at least one fullpowermode value of the fourth TPMI or a fifth fullpowermode value and a sixth fullpowermode value associated with the fifth and sixth TPMIs may be configured for PUSCH transmission. The fifth fullpowermode value is determined based on UE capabilities, e.g., to be a full power mode in each panel. The sixth fullpowermode value is determined based on UE capabilities, e.g., to be a panel-level full power mode. The fifth fullpowermode value may be one of a port-level fullpowermode0, a port-level fullpowermode1, and a port-level fullpowermode2. The sixth fullpowermode value may be one of a panel-level fullpowermode0, a panel-level fullpowermode1, and a panel-level fullpowermode2.

[0225]

[0226] It should be understood that depending on the bit width of the associated field (ie, the third 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 transmit power is enhanced. Continuing with reference to FIG. 3, terminal device 220 may control transmit power (360) prior to a PUSCH transmission.

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

[0229] This allows for per UE and per panel power constraints. Additionally, 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 (denoted as s') and a second scaling factor (denoted as s), where the first scaling factor is calculated at least in part based on a panel-level full power transmit capability and the second scaling factor is calculated at least in part based on a port-level full power transmit capability 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 PUSCH transmit power to the maximum number of panels supported / activated by terminal device 220. In particular, the first scaling factor s′ is 1 or a first ratio, depending on the full power mode of the panel levels configured and supported by 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 PUSCH transmit power to the maximum number of SRS ports supported by the UE in one SRS resource per panel. Specifically, the second scaling factor s is 1 or a second ratio, depending on the port-level full power mode configured and supported by the UE.

[0233] In some embodiments, the first scaling factor is: Full power transmission capability at panel level; A configured TPMI or combination of TPMIs for uplink transmission, · the number of panels used for uplink transmission, the number of activated panels of the terminal 220; Number of panels corresponding to the TMPT or TPMI combination, or Total number of panels of the terminal device 220, The calculation is based on at least one of the following:

[0234] In some embodiments, the second scaling factor is: Port-level full power transmit capability; A configured TPMI or combination of TPMIs for uplink transmission, The number of ports in the panel that are used for uplink transmission, The number of activated ports in the panel, Number of ports corresponding to the TPMI or combination of TPMIs, or Total number of ports in the panel, The calculation is based on at least one of the following:

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

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

number

[0237] In this particular embodiment, the terminal device 220 scales the linear values ​​within a particular panel by a second scaling factor s, i.e.,

number

[0238] Furthermore, in this particular embodiment, the terminal device 220 multiplies the linear value by a second factor s′ across the panels, i.e., the sum

number

[0239] For better understanding, please refer to Fig. 6 which shows an example 600 of controlling transmission power. In the example of Fig. 6, the maximum transmission power is 23 dBm and a 4-port 1-layer transmission is performed. Fig. 6 shows different combinations of panel-level full power mode and per-panel full power mode that can provide the maximum transmission power.

[0240] In some embodiments, in the case of single panel or panel transparent uplink transmission, if ul-FullPowerTransmission in the PUSCH-Config is provided, the UE scales P̂_(“PUSCH”,b,f,c) (i,j,q_d,l) by s, where - ul-FullPowerTransmission in PUSCH-Config is set to fullpowerMode1 and each SRS resource in the SRS-ResourceSet with usage set to "codebook" has two or more SRS ports, and s is a ratio of the number of antenna ports with non-zero PUSCH transmit power to the maximum number of SRS ports supported by the UE in one SRS resource associated with a corresponding capability set report; - If ul-FullPowerTransmission in PUSCH-Config is set to fullpowerMode2, - for a full power TPMI reported by the terminal device 220, s = 1, s being the ratio of the number of antenna ports with non-zero PUSCH transmit power to the number of SRS ports for the remaining TPMI, where if two or more SRS resources associated with the corresponding capability set report are configured in the SRS-ResourceSet with usage set to "codebook" or indicated by a configured grant of type 1, the number of SRS ports is associated with the SRS resources indicated by the SRS field in the DCI format for scheduling PUSCH transmission, or if only one SRS resource is configured in the SRS-ResourceSet with usage set to "codebook", the number of SRS ports is associated with the SRS resources associated with the corresponding capability set, - when two or more SRS resources are provided in the SRS-ResourceSet with usage set to "codebook" or indicated by a configured grant of type 1, an SRS resource with a single port is indicated by an SRS field in a DCI format for scheduling a PUSCH transmission, or if only one SRS resource with a single port is provided in the SRS-ResourceSet with usage set to "codebook", then s=1; - s=1 if ul-FullPowerTransmission in the PUSCH-Config is set to fullpower;

[0241] In addition, when each SRS resource in an SRS-ResourceSet with usage 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 having non-zero PUSCH transmit power to the maximum number of SRS ports supported by the terminal device 220 in one SRS resource. Process example for dynamic waveform switching

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

[0243] Continuing to refer to FIG. 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 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 included in a DCI message or a MAC CE message. Additionally, the transmission information further includes precoding information used by the terminal device 220 to perform uplink transmission. Then, the terminal device 220 determines a TPMI or a combination of TPMIs based on the transmission information.

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

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

[0246] Alternatively, in another specific embodiment, the first waveform information is a second indication of whether 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 change of the waveform.

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

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

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

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

[0251] Alternatively, when 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 the TPMI or combination of TPMI based on the first waveform information and the precoding information until the first waveform information is used in performing the latest SRS. Figure 9 shows timing 900 when the TPMI or combination of TPMI based on the first waveform information is indicated by the MAC CE message.

[0252] In addition to an 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. As one particular exemplary embodiment, the first SRS resource (including "usage"="codebook") corresponds to transform precoding being enabled, and the second SRS resource corresponds to transform precoding being disabled. In this case, the SRI included in the DCI message means whether transform precoding is enabled or disabled. Additionally, the TPMI in the DCI depends on the indicated SRI.

[0253] Alternatively, in some other embodiments, the first waveform information is indicated by an SRS resource set having a second pre-configured correspondence to a particular waveform.

[0254] As one particular example embodiment, the first SRS resource set and the second SRS resource set are configured to have "usage"="codebook", where the first SRS resource set corresponds to transform precoding being enabled and the second SRS resource set corresponds to transform precoding being disabled. In this case, the "SRS resource set indicator" in the DCI indicates whether transform precoding is enabled or disabled. 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 that is configured to have different precoding matrices in the first codebook for the first waveform and the second codebook for the second waveform, i.e., the terminal device 220 does not expect such a TPMI (e.g., a TPMI having an index of any of {12, 14, 17, 19, 20, 22, 25, 27}) that is indicated with dynamic waveform switching.

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

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

[0258] In block 1010, a terminal device 220 deployed with multiple antenna port sets receives a DCI message for scheduling at least one uplink transmission via at least two of the multiple antenna port sets, the DCI message indicating first information on SRS resources associated with the at least one uplink transmission, second information on the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission.

[0259] In block 1020, terminal device 220 sends the at least one uplink transmission to a network via the at least two of the plurality of antenna port sets based on the DCI message.

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

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

[0262] In some embodiments, when 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 repetition, the number of layers associated with the first TPMI and the number of layers associated with the second TPMI are the same.

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

[0266] In some embodiments, when 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, terminal device 220 receives a second SRS configuration indicating a third SRS resource set associated with both the first and second panels of terminal device 220 or both the first and second sets of capability values.

[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, the at least one transmit precoder having a corresponding port number corresponding to the at least one TPMI.

[0269] In some embodiments, when 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 the first port groups and the number of the second port groups is determined based on at least one of port group information included in the DCI message, a first number of ports corresponding to the first TPMI, a second number of ports corresponding to the second TPMI, a number of ports of SRS resources 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 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, terminal device 220 receives a third SRS configuration indicating a first SRS resource set associated with a first panel or a first capability set of terminal device 220 and a second SRS resource set associated with a second panel or a second capability set of terminal device 220. In particular, 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, and 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 a sum of a number of ports associated with the first and second SRIs.

[0274] In some embodiments, when 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 SRI and a second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and the second SRI.

[0275] In some embodiments, terminal device 220 transmits transmission capability information to network device 210 via at least two of the plurality of antenna port sets, the transmission capability information including at least one of 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 a panel-level coherence capability, a second coherence type indicating a port-level coherence capability within the panel, a first full power mode indicating a panel-level full power capability, or a second full power mode indicating a port-level full power capability within the panel.

[0276] In some embodiments, terminal device 220 receives an SRS configuration that is generated based on the 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 being associated with a digital precoding scheme and an analog beamforming scheme.

[0278] In some embodiments, the first coherence mode is one of 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 provided 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 combination of TPMIs is set.

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

[0280] 11 is a flowchart of an example method 1100 according to some embodiments of the present disclosure. For example, the method 1100 may be implemented in a terminal device 220 as shown in FIGS.

[0281] In block 1110, the terminal device 220 transmits full power transmit capability information to the network, where the full power transmit capability information indicates a panel level full power transmit capability and a port level full power transmit capability within the panel.

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

[0283] At block 1130, terminal device 220 controls transmit power of the at least one uplink transmission based on the 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 in part based on a panel-level full power transmit capability and a second scaling factor calculated at least in part based on a port-level full power transmit capability within the panel.

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

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

[0287] 12 is a flowchart of an example method 1200 according to some embodiments of the present disclosure. For example, the method 1200 may be implemented in a terminal device 220 as shown in FIGS.

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

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

[0290] In some embodiments, the first waveform information is one of a first indication of whether the first waveform or the second waveform is enabled, a second indication of whether to switch the currently applied waveform, or information regarding a panel or capability score set of the terminal device 220 that corresponds to a particular 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 combination of TPMI includes one of determining the TPMI or combination of TPMI based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or combination of TPMI based on the precoding information and the second waveform information indicated by the DCI message.

[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 combination of TPMI includes determining the TPMI or combination of TPMI based on the first waveform information and the precoding information until the first waveform information is used when performing a latest SRS.

[0293] In some embodiments, the first waveform information is indicated by an SRS resource having a first pre-configured correspondence to a particular waveform, or an SRS resource set having a second pre-configured correspondence to a particular 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 configured 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-phase transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}.

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

[0297] In block 1310, the network device 210 transmits a DCI message to a terminal device 220 deployed with multiple antenna port sets for scheduling at least one uplink transmission over at least two of the multiple antenna port sets, the DCI message indicating first information regarding SRS resources associated with the at least one uplink transmission, second information regarding the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission.

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

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

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

[0301] In some embodiments, when 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 repetition, the number of layers associated with the first TPMI and the number of layers associated with the second TPMI are the same.

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

[0305] In some embodiments, when 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, network device 210 transmits a second SRS configuration indicating a third SRS resource set associated with both the first and second panels or both the first and second sets of capability values ​​of terminal device 220.

[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, the at least one transmit precoder having a corresponding port number corresponding to the at least one TPMI.

[0308] In some embodiments, when 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 the first port groups and the number of the second port groups is determined based on at least one of the port group information included in the DCI message, the port group information included in the second SRS setting, the first number of ports corresponding to the first TPMI, the second number of ports corresponding to the second TPMI, the number of ports of SRS resources included in the third SRS set, capability information corresponding to the first and second control resource set pools of terminal device 220, and the measured signal quality of each port of 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, network device 210 transmits a third SRS configuration indicating a first SRS resource set associated with a first panel or a first set of capabilities of terminal device 220 and a second SRS resource set associated with a second panel or a second set of capabilities of terminal device 220. Additionally, 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, and 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 a sum of a number of ports associated with the first and second SRIs.

[0313] In some embodiments, when 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 SRI and a second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and the second SRI.

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

[0315] In some embodiments, network device 210 generates an SRS configuration that is generated based on the transmission capability information and transmits the SRS configuration to 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 being associated with a digital precoding scheme and an analog beamforming scheme.

[0317] In some embodiments, the first coherence mode is one of 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 provided 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 combination of TPMIs is set.

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

[0319] 14 is a flowchart of an example method 1400 according to some embodiments of the present disclosure. For example, the method 1400 may be implemented in the network device 210 as shown in FIGS. 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 used by the terminal device 220 to perform at least one uplink transmission and included in a DCI message or a MAC CE message, second waveform information used by the terminal device 220 when performing a latest SRS transmission, and precoding information used by the terminal device 220 to perform at least one uplink transmission.

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

[0322] In some embodiments, the first waveform information is one of a first indication of whether the first waveform or the second waveform is enabled, a second indication of whether to switch the currently applied waveform, or information regarding a panel or capability score set of the terminal device 220 that corresponds to a particular waveform.

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

[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 combination of TPMIs includes determining the TPMI or combination of TPMIs based on the first waveform information and the precoding information until the first waveform information is used in performing a latest SRS.

[0325] In some embodiments, the first waveform information is indicated by an SRS resource having a first pre-configured correspondence to a particular waveform, or an SRS resource set having a second pre-configured correspondence to a particular 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 configured 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-phase transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}. Equipment example

[0328] In some exemplary embodiments, a terminal device 220 deployed with a plurality of antenna port sets comprises circuitry configured to receive a DCI message for scheduling at least one uplink transmission via at least two of the plurality of antenna port sets, the DCI message indicating first information regarding SRS resources associated with the at least one uplink transmission, second information regarding the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission, and to transmit the at least one uplink transmission to a network via the at least two of the plurality of antenna port sets based on the DCI message.

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

[0330] In some embodiments, the circuitry is further configured to receive a first SRS configuration, where the first SRS configuration indicates a first SRS resource set associated with a first panel or a first capability value set of terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of 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 terminal device 220.

[0331] In some embodiments, when 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 repetition, the number of layers associated with the first TPMI and the number of layers associated with the second TPMI are the same.

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

[0335] In some embodiments, when 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 circuitry is further configured to receive a second SRS configuration indicating 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.

[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, the at least one transmit precoder having a corresponding port number corresponding to the at least one TPMI.

[0338] In some embodiments, when 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 the first port groups and the number of the second port groups is determined based on at least one of the port group information included in the DCI message, the first number of ports corresponding to the first TPMI, the second number of ports corresponding to the second TPMI, the number of ports of the SRS resources included in the third SRS set, the 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 circuitry is further configured to transmit a third SRS configuration indicating a first SRS resource set associated with a first panel or a first capability set of terminal device 220 and a second SRS resource set associated with a second panel or a second capability set of terminal device 220. In particular, 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, and 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 a sum of a number of ports associated with the first and second SRIs.

[0343] In some embodiments, when 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 SRI and a second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and the second SRI.

[0344] In some embodiments, the circuitry is further configured to transmit 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 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 a panel-level coherence capability, a second coherence type indicating a port-level coherence capability within a panel, a first full power mode indicating a panel-level full power capability, or a second full power mode indicating a port-level full power capability within a panel.

[0345] In some embodiments, the circuitry is further configured to receive an SRS configuration 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 being associated with a digital precoding scheme and an analog beamforming scheme.

[0347] In some embodiments, the first coherence mode is one of 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 provided 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 combination of TPMIs is set.

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

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

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

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

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

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

[0354] In some embodiments, the first waveform information is one of a first indication of whether the first waveform or the second waveform is enabled, a second indication of whether to switch the currently applied waveform, or information regarding a panel or capability score set of the terminal device 220 that corresponds to a particular 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 combination of TPMI includes one of determining the TPMI or combination of TPMI based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or combination of TPMI based on the precoding information and the second waveform information indicated by the DCI message.

[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 combination of TPMI includes determining the TPMI or combination of TPMI based on the first waveform information and the precoding information until the first waveform information is used when performing a latest SRS.

[0357] In some embodiments, the first waveform information is indicated by an SRS resource having a first pre-configured correspondence to a particular waveform, or an SRS resource set having a second pre-configured correspondence to a particular 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 configured 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-phase 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, network device 210 comprises circuitry configured to: send a DCI message to a terminal device 220 deployed with multiple antenna port sets for scheduling at least one uplink transmission via at least two of the multiple antenna port sets, the DCI message indicating first information regarding SRS resources associated with the at least one uplink transmission, second information regarding the precoding information associated with the at least one uplink transmission, and third information indicating a transmission mode of the at least one uplink transmission; and receive from the terminal device 220 the at least one uplink transmission transmitted via the at least two of the multiple antenna port sets based on the DCI message.

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

[0362] In some embodiments, the circuitry is further configured to transmit a first SRS configuration indicating a first SRS resource set associated with a first panel or a first capability value set of terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of 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 terminal device 220.

[0363] In some embodiments, when 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 repetition, the number of layers associated with the first TPMI and the number of layers associated with the second TPMI are the same.

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

[0367] In some embodiments, when 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 circuitry is further configured to transmit a second SRS configuration indicating a third SRS resource set associated with both the first panel and the second panel of the terminal device 220 or both the first set of capability values ​​and the second set of capability values.

[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, the at least one transmit precoder having a corresponding port number corresponding to the at least one TPMI.

[0370] In some embodiments, when 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 the first port groups and the number of the second port groups is determined based on at least one of the port group information included in the DCI message, the port group information included in the second SRS setting, the first number of ports corresponding to the first TPMI, the second number of ports corresponding to the second TPMI, the number of ports of SRS resources included in the third SRS set, capability information corresponding to the first and second control resource set pools of terminal device 220, and the measured signal quality of each port of 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 circuitry is further configured to transmit a third SRS configuration indicating a first SRS resource set associated with a first panel or a first capability set of terminal device 220 and a second SRS resource set associated with a second panel or a second capability set of terminal device 220. Further, simultaneous use of resources included in the first and second 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, and 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 a sum of a number of ports associated with the first and second SRIs.

[0375] In some embodiments, when 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 SRI and a second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and the second SRI.

[0376] In some embodiments, the circuitry is further configured to receive transmission capability information from the terminal device 220 via at least two of the plurality of antenna port sets, the transmission capability information including at least one of 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 a panel-level coherence capability, a second coherence type indicating a port-level coherence capability within a panel, a first full power mode indicating a panel-level full power capability, or a second full power mode indicating a port-level full power capability within a panel.

[0377] In some embodiments, the circuitry is further configured to generate an SRS configuration based on the transmission capabilities information and to transmit the SRS configuration 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 being associated with a digital precoding scheme and an analog beamforming scheme.

[0379] In some embodiments, the first coherence mode is one of 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 provided 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 combination of TPMIs is set.

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

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

[0382] In some embodiments, the first waveform information is one of a first indication of whether the first waveform or the second waveform is enabled, a second indication of whether to switch the currently applied waveform, or information regarding a panel or capability score set of the terminal device 220 that corresponds to a particular waveform.

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

[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 combination of TPMIs includes determining the TPMI or combination of TPMIs based on the first waveform information and the precoding information until the first waveform information is used in performing a latest SRS.

[0385] In some embodiments, the first waveform information is indicated by an SRS resource having a first pre-configured correspondence to a particular waveform, or an SRS resource set having a second pre-configured correspondence to a particular 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 configured 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-phase transmission using four antenna ports, and the TPMI index is one of the values ​​{12, 14, 17, 19, 20, 22, 25, 27}.

[0388] 15 is a schematic block diagram of an apparatus 1500 suitable for implementing an embodiment of the present disclosure. The apparatus 1500 is considered as another exemplary implementation of the terminal apparatus 220 and the network apparatuses 210-1 and 210-2 shown in FIGS. 2A-2C. Thus, the apparatus 1500 may be implemented in the terminal apparatus 220 and the network apparatuses 210-1 and 210-2, or as at least a part thereof.

[0389] As shown, the apparatus 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. 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 nodes referred to herein may in practice have multiple antennas. The communication interface may represent any interface required 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 an Uu interface for communication between an eNB and a terminal device.

[0390] The 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 3-14. The embodiments of the present disclosure may be implemented by computer software executable by the processor 1510 of the device 1500, or 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, the 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] The 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, by way of non-limiting example, non-transitory computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory. Although only one memory 1520 is shown in the device 1500, there may be several physically different memory modules in the device 1500. The processor 1510 may be of any type suitable for a local technology network and may include, by way of non-limiting example, one or more of a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (DSP) and a processor based on a multi-core processor architecture. The device 1500 may have multiple processors, for example application specific integrated circuit chips time-slaved to a clock that synchronizes the main processor.

[0392] Overall, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of the present disclosure have been illustrated and described using block diagrams, flow charts, or some other pictorial representations, it should be understood that the blocks, devices, systems, techniques, or methods described herein may be implemented, by way of non-limiting examples, in hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing device, or any combination thereof.

[0393] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions, such as instructions included in a program module, that execute in a device on a target real or virtual processor to perform the process or method described above with reference to Figures 3 to 14. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. In various embodiments, the functionality of the program modules may be combined or split between program modules as appropriate. The machine-executable instructions of the program modules may be executed in local or distributed devices. In a distributed device, the program modules may be located in both local and remote storage media.

[0394] Program codes for carrying out the methods of the present 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 special purpose computer, or other programmable data processing device, and when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may run entirely on the machine, partially on the machine, as a separate software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0395] The above program code may be implemented on a machine-readable medium, which may be any tangible medium that can contain or store a program 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, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any suitable combination of the aforementioned media. More specific examples of the machine-readable storage medium may include an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the aforementioned.

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

[0397] Although the present disclosure has been described in language specific to structural features and / or methodological acts, it should be understood that the present disclosure, as defined in the appended claims, is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. 1. A method of communication comprising:

1. In a terminal device deployed with a plurality of antenna port sets, receiving a downlink control information (DCI) message for scheduling at least one uplink transmission over at least two of the plurality of antenna port sets, the DCI message comprising: first information regarding a sounding reference signal (SRS) resource associated with the at least one uplink transmission; and second information regarding precoding information associated with the at least one uplink transmission; third information indicating a transmission mode of the at least one uplink transmission; and transmitting the at least one uplink transmission to a network via the at least two of the plurality of antenna port sets based on the DCI message; The method includes:

2. The plurality of antenna port sets include: a first antenna port set corresponding to a first panel or a first capability value set of the terminal device; a second antenna port set corresponding to a second panel or a second capability value set of the terminal device; The at least one uplink transmission is a codebook-based (CB-based) physical uplink shared channel transmission (PUSCH) and is performed via multiple transmit and receive points (TRPs). The method of claim 1.

3. A first SRS resource set associated with a first panel or a first capability value set of the terminal device; A second SRS resource set associated with a second panel or a second capability set of the terminal device; 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; receiving a first SRS configuration indicating The method of claim 1 or 2, further comprising:

4. If the third information indicates that the at least one uplink transmission is a space division multiplexing (SDM) repetition or non-coherent joint transmission (NCJT) transmission, the first information is a first SRS resource indicator (SRI) associated with the first SRS resource set; and a second SRI associated with the second SRS resource set; The second information is a first transmit precoding matrix indicator (TPMI) corresponding to the first SRI; and a second TPMI corresponding to the second SRI; The method according to claim 3.

5. If the third information indicates that the at least one uplink transmission is the SDM repetition, a number of layers associated with the first TPMI and a number of layers associated with the second TPMI are the same. The method according to claim 4.

6. When the third information indicates that the at least one uplink transmission is the NCJT transmission and that the at least one uplink transmission is transmitted using one codeword, 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; The total number of layers of the first and second precoders is equal to the number of layers corresponding to one codeword. The method according to claim 4.

7. When the at least one uplink transmission is the NCJT transmission and the third information indicates that the at least one uplink transmission is transmitted using a first codeword and a second codeword, the first TPMI indicates a first precoder applied on at least one layer, and a number of the at least one layer corresponds to the first codeword, and the second TPMI indicates a second precoder applied on at least one other layer, and a number of the at least one other layer corresponds to the second codeword. The method according to claim 4.

8. When the third information indicates that the at least one uplink transmission is a coherent joint transmission (CJT) transmission, the first information is a third SRS resource indicator (SRI) associated with the third SRS resource set; The second information is and a third transmit precoding matrix indicator (TPMI) corresponding to the third SRI. The method according to claim 3.

9. receiving a second SRS configuration indicating a third SRS resource set associated with both the first and second panels or both the first and second capability sets of the terminal device; The method of claim 1 or 2, further comprising:

10. The first information is a third SRS resource indicator (SRI) associated with the third SRS resource set; The second information is and at least one transmit precoding matrix indicator (TPMI) associated with at least one transmit precoder selected from an uplink codebook, the at least one transmit precoder having a corresponding port number corresponding to the at least one TPMI.

10. The method of claim 9.

11. If the third information indicates that the at least one uplink transmission is a space division multiplexing (SDM) repetition or non-coherent joint transmission (NCJT) transmission, the at least one TPMI is: a first TPMI corresponding to a first port group of the third SRS resource set; a second TPMI corresponding to a second port group of the third SRS resource set; and 11. The method of claim 10, comprising:

12. At least one of the number of the first port groups and the number of the second port groups is Port group information included in the DCI message; a first number of ports corresponding to the first TPMI; a second number of ports corresponding to the second TPMI; the number of ports of the SRS resources included in the third SRS 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; The method of claim 11 , wherein the at least one of the following is determined:

13. When the third information indicates that the at least one uplink transmission is a coherent joint transmission (CJT) transmission, the second information is and a third transmit precoding matrix indicator (TPMI) corresponding to the third SRI. The method of claim 10.

14. A first SRS resource set associated with a first panel or a first capability value set of the terminal device; A second SRS resource set associated with a second panel or a second capability set of the terminal device; receiving a third SRS configuration indicating Simultaneous use of resources included in the first and second SRS resource sets is supported. The method according to claim 1 or 2.

15. The first information is a first SRS resource indicator (SRI) associated with the first SRS resource set; and a second SRI associated with the second SRS resource set; The second information is at least one transmit precoding matrix indicator (TPMI) associated with a transmit precoder selected from an uplink codebook, the transmit precoder having a number of ports corresponding to a sum of the number of ports associated with the first and second SRIs. The method of claim 14.

16. If the third information indicates that the at least one uplink transmission is a coherent joint transmission (CJT) transmission, the at least one TPMI is: a fourth TPMI associated with the first SRI and the second SRI; or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and the second SRI; 16. The method of claim 15, comprising one of:

17. and transmitting transmission capability information to the network device via at least two of the plurality of antenna port sets, the transmission capability information comprising: a transmission mode associated with simultaneous transmission using the multiple antenna port sets; A hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme; The first coherence type indicates the panel-level coherence capability; A second coherence type that indicates the port-level coherence capability within the panel; A first full power mode indicating full power capability at the panel level; or A second full power mode that indicates full power capability at the port level within the panel; The method of claim 1 , comprising at least one of:

18. receiving an SRS configuration generated based on the transmission capability information; 20. The method of claim 17 further comprising:

19. The first coherence type, the second coherence type, the first full power mode, and the second full power mode are the transmission mode; The hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme; 20. The method of claim 17, wherein the method is associated with at least one of:

20. The first coherent type is 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 provided when all panels of the terminal device are used for the at least one uplink transmission; or a third panel-level full power mode indicating that the full power is possible if all panels of the terminal device are used for the at least one uplink transmission or if at least one specific transmit precoding matrix indicator (TPMI) or combination of TPMIs is set; 20. The method of claim 17, wherein the method is one of:

21. When the first full power mode is the third panel-level full power mode, the transmission capability information further includes information regarding the at least one particular TPMI or combination of TPMIs.

21. The method of claim 20.

22. 1. A method of communication comprising: In the terminal device, Full power transmission capability at panel level and Full power transmit capability at the port level within the panel; transmitting full power transmit capability information indicative of receiving a configuration from the network indicating a transmit precoding matrix indicator (TPMI) or a combination of TPMIs for at least one uplink transmission; controlling a transmit power of the at least one uplink transmission based on the full power transmit capability information and the indicated TPMI or combination of TPMIs; The method includes:

23. Controlling the transmission power The transmission power is a first scaling factor calculated based at least in part on the full power transmit capability of the panel level; and a second scaling factor calculated at least in part based on the full power transmit capability of the port levels within the panel.

22. The method of claim 21.

24. The first scaling factor is Full power transmission capability at panel level, a transmit precoding matrix indicator (TPMI) or combination of TPMIs configured for the at least one uplink transmission; a number of panels used for said at least one uplink transmission; the number of activated panels of said terminal device; The number of panels corresponding to the TMPT or TPMI combination, or the total number of panels of the terminal device; 23. The method of claim 22, wherein the calculation is based on at least one of:

25. The second scaling factor is said port level full power transmit capability; a transmit precoding matrix indicator (TPMI) or combination of TPMIs configured for the at least one uplink transmission; the number of ports in the panel used for said at least one uplink transmission; The number of activated ports in the panel, the number of ports corresponding to said TPMI or combination of said TPMIs; or the total number of ports in said panel; 23. The method of claim 22, wherein the calculation is based on at least one of:

26. 1. A method of communication comprising: In the terminal device, from the network device, First waveform information used by the terminal device to perform at least one uplink transmission and included in a downlink control information (DCI) message or a media-access-control (MAC CE) control element (CE) message; Second waveform information used by the terminal device when performing a latest sounding reference signal (SRS) transmission; and precoding information used by the terminal device to perform the at least one uplink transmission; receiving transmission information including: determining a transmit precoding matrix indicator (TPMI) or a combination of TPMIs based on the transmission information; The method includes:

27. The first waveform information is a first indication of whether the first waveform or the second waveform is enabled; a second indication of whether to switch the currently applied waveform; or Information regarding a panel or a capability set corresponding to a specific waveform of the terminal device; 27. The method of claim 26, wherein the method is one of:

28. When the first waveform information and the precoding information are indicated by the DCI information, determining the TPMI or a combination of TPMIs includes: determining the TPMI or a combination of TPMIs based on the first waveform information and the precoding information indicated by the DCI message; or determining the TPMI or a combination of TPMIs based on the precoding information indicated by the DCI message and the second waveform information; 27. The method of claim 26, comprising one of:

29. 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 a combination of TPMIs includes: determining the TPMI or a combination of TPMIs based on the first waveform information and the precoding information until the first waveform information is used in performing an updated SRS.

27. The method of claim 26.

30. The first waveform information is a sounding reference signal (SRS) resource having a first pre-configured correspondence to a particular waveform; or an SRS resource set having a second pre-configured correspondence to a particular waveform; 27. The method of claim 26, represented by one of:

31. If the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index configured to have different precoding matrices in a first codebook for a first waveform and a second codebook for a second waveform.

27. The method of claim 26.

32. The at least one uplink transmission is a single-phase transmission using four antenna ports, and the TPMI index is one of the values ​​12, 14, 17, 19, 20, 22, 25, and 27.

32. The method of claim 31 .

33. 1. A method of communication comprising:

1. A method for scheduling at least one uplink transmission over at least two of a plurality of antenna port sets, comprising: transmitting, in a network device, a downlink control information (DCI) message to a terminal device deployed with a plurality of antenna port sets for scheduling at least one uplink transmission over at least two of the plurality of antenna port sets, the DCI message comprising: first information regarding a sounding reference signal (SRS) resource associated with the at least one uplink transmission; and second information regarding the precoding information associated with the at least one uplink transmission; third information indicating a transmission mode of the at least one uplink transmission; and receiving from the terminal device the at least one uplink transmission transmitted via the at least two of the plurality of antenna port sets based on the DCI message; The method includes:

34. The plurality of antenna port sets include: a first antenna port set corresponding to a first panel or a first capability value set of the terminal device; a second antenna port set corresponding to a second panel or a second capability value set of the terminal device; The at least one uplink transmission is a codebook-based (CB-based) physical uplink shared channel transmission (PUSCH) and is performed via multiple transmit and receive points (TRPs).

34. The method of claim 33.

35. A first SRS resource set associated with a first panel or a first capability value set of the terminal device; A second SRS resource set associated with a second panel or a second capability set of the terminal device; 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; transmitting a first SRS configuration indicating 35. The method of claim 33 or 34, further comprising:

36. If the third information indicates that the at least one uplink transmission is a space division multiplexing (SDM) repetition or non-coherent joint transmission (NCJT) transmission, the first information is a first SRS resource indicator (SRI) associated with the first SRS resource set; and a second SRI associated with the second SRS resource set; The second information is a first transmit precoding matrix indicator (TPMI) corresponding to the first SRI; and a second TPMI corresponding to the second SRI; 36. The method of claim 35.

37. If the third information indicates that the at least one uplink transmission is the SDM repetition, a number of layers associated with the first TPMI and a number of layers associated with the second TPMI are the same.

37. The method of claim 36.

38. When 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 one codeword, 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; The total number of layers of the first and second precoders is equal to the number of layers corresponding to one codeword.

37. The method of claim 36.

39. If the third information indicates that the at least one uplink transmission is the NCJT transmission and that the at least one uplink transmission is transmitted using a first codeword and a second codeword, The first TPMI indicates a first precoder applied on at least one layer, the number of the at least one layer corresponding to the first codeword; The second TPMI indicates a second precoder applied on at least one other layer, and a number of the at least one other layer corresponds to the second codeword.

37. The method of claim 36.

40. When the third information indicates that the at least one uplink transmission is a coherent joint transmission (CJT) transmission, the first information is a third SRS resource indicator (SRI) associated with the third SRS resource set; The second information is and a third transmit precoding matrix indicator (TPMI) corresponding to the third SRI.

36. The method of claim 35.

41. Transmitting a second SRS configuration indicating 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.

35. The method of claim 33 or 34, further comprising:

42. The first information is a third SRS resource indicator (SRI) associated with the third SRS resource set; The second information is and at least one transmit precoding matrix indicator (TPMI) associated with at least one transmit precoder selected from an uplink codebook, the at least one transmit precoder having a corresponding port number corresponding to the at least one TPMI.

42. The method of claim 41.

43. If the third information indicates that the at least one uplink transmission is a space division multiplexing (SDM) repetition or non-coherent joint transmission (NCJT) transmission, the at least one TPMI is: a first TPMI corresponding to a first port group of the third SRS resource set; a second TPMI corresponding to a second port group of the third SRS resource set; and 43. The method of claim 42, comprising:

44. At least one of the number of the first port groups and the number of the second port groups is Port group information included in the DCI message; Port group information included in the second SRS configuration; a first number of ports corresponding to the first TPMI; a second number of ports corresponding to the second TPMI; the number of ports of the SRS resources included in the third SRS set; Capability information corresponding to the first and second control resource set pools of the terminal device; the measured signal quality of each port of said terminal equipment; 44. The method of claim 43, wherein the at least one of the following is determined:

45. When the third information indicates that the at least one uplink transmission is a coherent joint transmission (CJT) transmission, the second information is and a third transmit precoding matrix indicator (TPMI) corresponding to the third SRI.

43. The method of claim 42.

46. A first SRS resource set associated with a first panel or a first capability value set of the terminal device; A second SRS resource set associated with a second panel or a second capability set of the terminal device; transmitting a third SRS configuration indicating Simultaneous use of resources included in the first and second SRS resource sets is supported.

35. The method of claim 33 or 34.

47. The first information is a first SRS resource indicator (SRI) associated with the first SRS resource set; and a second SRI associated with the second SRS resource set; The second information is at least one transmit precoding matrix indicator (TPMI) associated with a transmit precoder selected from an uplink codebook, the transmit precoder having a number of ports corresponding to a sum of the number of ports associated with the first and second SRIs.

47. The method of claim 46.

48. If the third information indicates that the at least one uplink transmission is a coherent joint transmission (CJT) transmission, the at least one TPMI is: a fourth TPMI associated with the first SRI and the second SRI; or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and the second SRI; 48. The method of claim 47, comprising one of:

49. and receiving transmission capability information from the terminal device via at least two of the plurality of antenna port sets, the transmission capability information being: a transmission mode associated with simultaneous transmission using the multiple antenna port sets; A hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme; The first coherence type indicates the panel-level coherence capability; A second coherence type that indicates the port-level coherence capability within the panel; A first full power mode indicating full power capability at the panel level; or A second full power mode that indicates full power capability at the port level within the panel; 34. The method of claim 33, comprising at least one of:

50. generating an SRS configuration based on the transmission capability information; Transmitting the SRS configuration to the terminal device; 50. The method of claim 49, further comprising:

51. The first coherence type, the second coherence type, the first full power mode, and the second full power mode are the transmission mode; The hybrid beamforming type associated with a digital precoding scheme and an analog beamforming scheme; 50. The method of claim 49, wherein the method is associated with at least one of:

52. The first coherent type is 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 provided when all panels of the terminal device are used for the at least one uplink transmission; or a third panel-level full power mode indicating that the full power is possible if all panels of the terminal device are used for the at least one uplink transmission or if at least one specific transmit precoding matrix indicator (TPMI) or combination of TPMIs is set; 50. The method of claim 49, wherein the method is one of:

53. When the first full power mode is the third panel-level full power mode, the transmission capability information further includes information regarding the at least one particular TPMI or combination of TPMIs.

53. The method of claim 52.

54. 1. A method of communication comprising: In the network device, from the terminal device, First waveform information used by the terminal device to perform at least one uplink transmission and included in a downlink control information (DCI) message or a media-access-control (MAC) control element (CE) message; Second waveform information used by the terminal device when performing a latest sounding reference signal (SRS) transmission; and precoding information used by the terminal device to perform at least one uplink transmission; receiving transmission information including: determining a transmit precoding matrix indicator (TPMI) or a combination of TPMIs based on the transmission information; The method includes:

55. The first waveform information is a first indication of whether the first waveform or the second waveform is enabled; a second indication of whether to switch the currently applied waveform; or Information regarding a panel or a capability set corresponding to a specific waveform of the terminal device; 55. The method of claim 54, wherein the method is one of:

56. When the first waveform information and the precoding information are indicated by the DCI information, determining the TPMI or a combination of TPMIs includes: determining the TPMI or a combination of TPMIs based on the first waveform information and the precoding information indicated by the DCI message; or determining the TPMI or a combination of TPMIs based on the precoding information indicated by the DCI message and the second waveform information; 55. The method of claim 54, comprising one of:

57. 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 a combination of TPMIs includes: determining the TPMI or a combination of TPMIs based on the first waveform information and the precoding information until the first waveform information is used in performing an updated SRS.

55. The method of claim 54.

58. The first waveform information is a sounding reference signal (SRS) resource having a first pre-configured correspondence to a particular waveform; or an SRS resource set having a second pre-configured correspondence to a particular waveform; 55. The method of claim 54, represented by one of:

59. If the first waveform information indicates a waveform switch, the precoding information is not associated with a TPMI index configured to have different precoding matrices in a first codebook for a first waveform and a second codebook for a second waveform.

55. The method of claim 54.

60. The at least one uplink transmission is a single-phase transmission using four antenna ports, and the TPMI index is one of the values ​​12, 14, 17, 19, 20, 22, 25, and 27.

60. The method of claim 59.

61. 1. A terminal device comprising: a processor; and a memory coupled to the processor and storing instructions, The instructions, when executed by the processor, perform a method according to any one of claims 1 to 32. Terminal device.

62. 1. A network device comprising: a processor; and a memory coupled to the processor and storing instructions, The instructions, when executed by the processor, perform a method according to any one of claims 33 to 60. Network device.

63. storing instructions which, when executed on at least one processor, cause said at least one processor to perform the method of any one of claims 1 to 60; Computer-readable medium.

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