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] FIELD Exemplary embodiments of the present disclosure relate generally to the field of communications technology, 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 CB-based PUSCH transmission, a network device may determine a transmit precoding matrix index (TPMI) based on sounding reference signal (SRS) measurements and a predefined codebook, and indicate the determined TPMI to a terminal device (e.g., user equipment, UE). It has also been proposed that a terminal device may be deployed with two or more panels. Conventionally, even if a terminal device has multiple panels, it can only transmit on one panel at a time.

[0003] To improve transmission performance, it is required to support STxMP technology. Although there has been some discussion about 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 communications 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 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 transmitting the at least one uplink transmission to a network over 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 a combination of TPMIs 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 TPMIs.

[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 most recent 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 communications is provided, the method including: 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 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 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 most recent 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 the 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 the 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 the method according to the third aspect of the present disclosure.

[0013] In a ninth aspect, there is provided a network device, the 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, the 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 that, when executed on at least one processor, cause the at least one processor to perform a method according to any one of the first to fifth aspects of the present disclosure.

[0016] It should be understood that this Summary of the Invention 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 explanation 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. 1 illustrates a signaling flow for scheduling CB-based PUSCH transmissions in a related solution.

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

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

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

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

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

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

[0025] [Figure 6] FIG. 10 illustrates an example for controlling transmission power.

[0026] [Figure 7] FIG. 10 is a diagram showing the timing for determining a TPMI or a combination of TPMIs based on first waveform information and precoding information indicated by a DCI message.

[0027] [Figure 8] FIG. 10 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] FIG. 10 is 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] 1 is a flowchart illustrating an exemplary method performed by a terminal device, according to some embodiments of the present disclosure.

[0030] [Figure 11] 1 is a flowchart illustrating an exemplary method performed by a terminal device, according to some embodiments of the present disclosure.

[0031] [Figure 12] 1 is a flowchart illustrating an exemplary method performed by a terminal device, according to some embodiments of the present disclosure.

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

[0033] [Figure 14] 4 is a flowchart illustrating an exemplary 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 INVENTION

[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 aid those skilled in the art in understanding and practicing the present disclosure, and do not imply any limitation 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 defined otherwise, 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," "embodiment," "exemplary embodiment," etc., indicate that the described embodiment may include a particular feature, structure, or characteristic, but do not necessarily mean that each embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Furthermore, 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] While the terms "first," "second," and the like may be used herein to describe various elements, it should be understood that 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 terminology used herein is used only for the purpose of describing particular embodiments and is not intended to limit example 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 "comprise," "include," "have," "comprise," "comprises," and / or "have" 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 choices may be made from among many functional alternatives used, and that such choices are not necessarily better, smaller, higher, or otherwise more preferred than other choices.

[0042] As used herein, the term "network device" refers to a device that can provide or host a cell or coverage area in which a terminal device can communicate. Examples of network devices include, but are not limited to, a Node B (Node B or NB), an evolved Node B (eNode B or eNB), a New Radio Access Node B (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. For illustrative purposes, some exemplary embodiments will be described below 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 (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 devices, personal digital assistants (PDAs), portable computers, desktop computers, imaging devices such as digital cameras, gaming devices, music storage and playback devices, in-vehicle wireless devices, 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. These may 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," "communications 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 appropriate communication standard, such as New Radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), Narrow Band Internet of Things (NB-IoT), etc. Furthermore, communications between terminal devices and network devices in a communication network may be implemented in accordance with any appropriate generation of communication protocol, including, but not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) communication protocols, and / or any other protocol 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 communications, there will naturally be future types of communications technologies and systems in which the present disclosure can be embodied, which should not be considered to limit the scope of the present disclosure to only the aforementioned systems.

[0045] As used herein, the term "circuitry" 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 with 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 portion thereof, that requires software / firmware for operation, although the software may not be present if not necessary for operation. As used herein, the term "circuitry" also includes implementations of only a hardware circuit or one or more processors, or a hardware circuit or portion of one or more processors and its (or their) accompanying 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 device and / or a control device, such as a chipset or processor, configured to control the user device 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 uplink transmissions (e.g., PUSCH transmissions) 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 a four-layer transmission with four antenna ports, with transform precoding disabled. [Table 1]

[0050] Referring to Figure 1A, Figure 1A shows a signaling flow 100 for CB-based PUSCH. As shown in Figure 1A, the terminal device and the network device may transmit information regarding UE capabilities 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 full coherence, partial coherence, and noncoherence. 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, for a particular coherence type, only a subset of precoders may be used.

[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 full power mode 180 in a related solution. Specifically, in full power mode 0, the terminal device can provide a maximum output power of 23 dBm because the transmit power is divided equally among 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 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, such as maxLength and dmrs-Type, It is shown as follows.

[0056] The terminal device may then transmit 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 an appropriate 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 a 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 160 a CB-based PUSCH transmission to the network device.

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

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

[0061] Specifically, in order to facilitate simultaneous multi-panel uplink transmission and achieve higher uplink throughput / reliability, the following should be considered and, if necessary, specified: a focus on FR2 and multi-TRP; a maximum of two transmit and receive points (TRP) and two panels should be assumed; and CPE / FWA / vehicles / industrial equipment (if applicable) should be targeted. > Uplink precoding instructions for PUSCH without the introduction of a new codebook for simultaneous multi-panel transmission ◆Considering single DCI and multi-DCI based multi-TRP operation, the total number of layers is up to 4 across all panels, and the total number of codewords is up to 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. ◆For 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 taken place about STxMP, it can be seen that such discussions are mainly about some assumptions and generalized concepts, rather than specific, 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, a terminal device with multiple panels 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 an SRS resource set associated with CB-based PUSCH STxMP. Specifically, in related solutions, the SRS resource sets applicable to PUSCHs scheduled by DCI format 0_1 ​​and DCI format 0_2 are defined by entries in 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 sufficient to support CB-based PUSCH STxMP.

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

[0066] Additionally, in a related solution, different waveforms may correspond to different codebooks, and the terminal device may determine a precoder based on both the currently used codebook and the TPMI indicated in the DCI message. In the related solution, 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 a precoder when dynamic waveform switching is enabled have not yet been resolved.

[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 "port used for uplink transmission", "port used for PUSCH transmission", "port with non-zero PUSCH transmit power" and "port 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 within 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 "panel," "panel type," "antenna port set," "antenna element," and "antenna array" (and their equivalents) may be used interchangeably.

[0070] Additionally, panel information described herein may refer to UE panel index / identification (ID), downlink panel ID, uplink panel ID, panel type indication, panel status indication, capability value 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 practicing 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 those described below.

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

[0073] As used herein, "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 (sometimes 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 devices 220. For purposes of explanation, network device 210-1 will be referred to as first network device 210-1, and network device 210-2 will be referred to as second network device 210-2. Furthermore, first network device 210-1 and second network device 210-2 may be connected to each other via a single line. 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 referred to as a downlink, and a link from a terminal device 220 to a network device 210 (e.g., the first network device 210-1 or the second network device 210-2) is referred to as an uplink. 210-2is a transmitting (TX) device (or transmitter), and terminal device 220 is a receiving (RX) device (or receiver). In the uplink, terminal device 220 is a transmitting TX device (or transmitter), and first network device 210-1 or second network device 210-2 is an RX device (or receiver).

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

[0077] Additionally, terminal device 220 may be deployed to have two or more panels. As shown in Figure 1A, terminal device 220 is deployed to have panels 225-1 and 225-2. Hereinafter, panels 225-1 and 225-2 may be referred to as first panel 225-1 and 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 communication network 200. Specifically, terminal device 220 may run CB-based PUSCH simultaneously on both panels 225-1 and 225-2.

[0081] Additionally, in the example of Figure 2A, multi-TRP transmission is also supported. As shown in Figure 1A, 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 will be referred to as the first TRP 230-1, and TRP 230-2 will be referred to as the second TRP 230-2.

[0082] Additionally, to support multiple TRPs and / or 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), e.g., the first TRP 230-1 is associated with the first control resource set pool and the second TRP 230-2 is associated with the second control resource set pool.

[0084] Furthermore, both single-TRP mode transmission and multi-TRP transmission are supported by the example of Figure 2A. Specifically, in single-TRP mode, the terminal device 220 communicates with the network via the first TRP 230-1 / second TRP 230-2. Alternatively, in multi-TRP 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, terminal device 220 simultaneously communicates with a first TRP 230-1 via panel 225-1 and 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 example of FIG. 2A.

[0087] Figure 2B illustrates an example scenario for 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, multi-TRP transmission is performed as an intra-cell transmission.

[0088] Figure 2C illustrates another exemplary scenario for 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, 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), and Global System for Mobile Communications (GSM). Furthermore, communications may be performed according to any currently known or future-developed generation of communications protocol. 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] 2A-2C (i.e., terminal device 220, panel 225, network device 210, TRP 230, and cell 240) and their connection relationships and types are for illustrative 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 now be described in detail with reference to Figure 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 Figures 2A-2C.

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

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

[0094] In the following text, several 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 those described below.

[0095] Furthermore, it should be understood that operations at the terminal device 220 and the network device 210 should be coordinated. In other words, the network device 210 and the terminal device 220 should have a common understanding of settings, parameters, etc. Such a common understanding may be achieved through any 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 brevity, some identical or similar content will be omitted herein.

[0096] Additionally, in the following description, several interactions (e.g., exchange of capability-related information, configuration / scheduling / activation of resources / transmissions, etc.) are performed between terminal device 220 and 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 value, 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, unless expressly indicated to the contrary, these features / operations described in different exemplary embodiments may be used in any suitable combination. Example Process for Exchanging Transmission Capability Information

[0099] According to some embodiments of the present disclosure, the terminal device 220 and the network device 210 may realize the 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]

[0033] Referring now to Figure 3, Figure 3 illustrates a signaling flow 300 for communication in accordance with some example embodiments of the present disclosure. As shown in Figure 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, while in some other embodiments, the transmission capability information is transmitted via a DCI message, a MAC CE, or any suitable signaling / messaging.

[0102] In some embodiments, the transmission capability information includes a transmission mode associated with the STxMP (i.e., simultaneous transmission using the multiple panel / 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 panel / antenna port sets; Non-coherent joint transmission (NCJT) using multiple activated panel / antenna port sets; > Different layers per panel / antenna port set or from different layers to different TRPs, > Different TBs or different TBs to different TRPs for each panel / antenna port set, 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 an NCJT transmission mode. As shown in FIG. 4B, the first panel 225-1 and the second panel 225-2 are noncoherent, and the antenna ports within the same panel are coherent. In the example of FIG. 4B, both 1 CW transmission and 2 CW transmission are supported. In some embodiments, CW-to-layer mapping allows 2 CW transmissions to be transmitted using four or more layers, and two CWs can be supported by transmitting one TB per panel / TRP, with each of the two CWs being 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 simultaneously transmitted 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 Figure 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 for uplink transmission (e.g., CB-based PUSCH STxMP).

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

[0111] Figure 4C shows an example of SDM repeating in transmit mode. 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 transmitted simultaneously to different TRPs via 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 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 process the received PUSCH in an uplink transmission (e.g., CB-based PUSCH STxMP) jointly (by soft combining) or separately.

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

[0116] In some embodiments, the digital precoding scheme is: Joint precoding across panels / multiple TRPs, Separate precoding per panel / for each TRP, >It may be one of the following: 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, Sub-array connection: one antenna port is connected to a subset of antenna elements, > Different beams are formed by one panel / towards different TRPs.

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

[0119] Other transmission capability information is The first coherence type indicates the panel-level coherence capability. A second coherence type that indicates port-level coherence capabilities within the panel, The first full power mode indicates full panel-level power capability, 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 indicates that full power is achieved regardless of the number of panels used for uplink transmission. That is, 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 a per-UE power constraint. A second panel-level full power mode indicating that full power can be supplied when all panels of the terminal device 220 are used for uplink transmission, 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 when all panels of the terminal device 220 are used for uplink transmission or when at least one specific precoding matrix indicator (TPMI) or TPMI combination is set. That is, panel-level full power mode 2 is supported and the terminal device 220 can transmit at full power only when all panels are used for transmission or when the 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 Figures 5A-5D.

[0123] 5A shows an antenna structure that supports a combination of joint precoding and full connection. In the example of FIG. 5A, the coherence type is full coherence, and both the first and second antennas may 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] 5B shows an antenna structure that supports a combination of separate precoding and subarrays (i.e., separate digital precoding and subarray-connected analog beamforming). In the example of FIG. 5B, the transmission mode is NCJT (e.g., noncoherent 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 2 panels 225Furthermore, 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 2 panels 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 NCJT or uplink simultaneous SDM repetition where the same TB is replaced by a subset of layers.

[0125] 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 the first panel). 225 -1 and 2 panels 225 5C, the first full power mode is full power mode 1 or 2 (i.e., the first panel 225 -1 and 2 panels 225 The first full power mode is full power mode 1 or 2 (i.e., full power mode 1 or 2 across the first and second panels), and the second full power mode is full power mode 0 (i.e., full power mode 0 within the first / second panel). Such an antenna structure is particularly suitable for uplink simultaneous SDM repetition.

[0126] 5D shows an antenna structure in which a combination of separate precoding and full connection (i.e., separate precoding and fully connected analog beamforming) is supported. In the example of FIG. 5D, the coherence type is full coherence, and both the first and second antennas may be full power mode 0, full power mode 1, or full power mode 2.

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

[0128] Alternatively or additionally, in some embodiments, a capability value 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 transmission is supported.

[0130] Because of these 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: the maximum number of SRS ports per panel (e.g., 2 ports), the 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: the 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 panel-level coherence capability; the second coherence type indicating port-level coherence capability within a panel; the first full power mode indicating panel-level full power capability; and the second full power mode indicating port-level full power capability within a panel.

[0132] According to the above procedure, capability information regarding 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 present disclosure is not limited in this respect. Example Process for Configuring and Scheduling STxMP

[0134] Continuing to refer to FIG. 3, network device 210 may generate and send 320 to terminal device 220 an SRS configuration (e.g., an RRC message) that allows configuration of SRS resources for performing PUSCH STxMP. In some embodiments, the SRS configuration includes the number of SRS resource sets, SRS resources within the SRS resource set, SRS ports, 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., the UE hybrid beamforming type), the first coherence type, the second coherence type, the first full power mode, or the second full power mode. Additionally, the SRS configuration may be generated depending on 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, terminal device 220 includes two two-port panels (e.g., first panel 225-1 and 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 value set of the terminal device 220, i.e., an 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 value set of the terminal device 220, i.e., 2 Panel 225-2 or No. 2 SRS Resource Set #2 for TRP 230-2 and A third SRS resource set, i.e., SRS resource set #3 for STxMP PUSCH, associated with both the first and second panels or both the first and second capability value sets of the terminal device 220; The present invention includes at least a part of the above.

[0137] The SRS configuration may indicate one or more of first to 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, for example, a first port group (e.g., port group #1: {port 0, port 1}) and a second port group (e.g., port group #2: {port 2, port 3}).

[0140] Additionally, two uplink beams can be configured per resource by sharing two 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 transmit an uplink grant (i.e., a DCI message) to terminal device 220 for scheduling uplink transmission (i.e., STxMP PUSCH) over at least two of the plurality of antenna port sets (340). Specifically, 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 for the uplink transmission.

[0143] Based on the DCI message, terminal device 220 may perform uplink transmission (ie, STxMP PUSCH) with 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 enhanced 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 enhanced DCI depend on the SRS resource indicator in the DCI message and the SRS configuration in the enhanced RRC message. In this way, PUSCH STxMP can be appropriately configured and scheduled.

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

[0146] In some embodiments, to schedule uplink transmissions, 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 used.

[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. In this way, 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 processes associated with three SRS resource sets

[0151] In some embodiments, the terminal device 220 a first SRS resource set associated with a first panel or a first capability value set of the terminal device 220; a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220; 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; 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, allowing network device 210 to determine the number of layers and precoder for subsequent PUSCH transmissions.

[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 SRS resource sets #1 and #2 based on the total rank obtained in 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 first information and second information, where the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[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 the first SRI, and the second TPMI indicates a second precoder applied to layers (v1, ..., v-1) corresponding to the 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, 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, and the second TPMI indicates a second precoder applied on at least one other layer, where 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, network device 210 may configure / trigger the SRS resources included in SRS resource sets #1 and #2 to have two uplink beams. Thus, in some embodiments, when the third information indicates that the uplink transmission is an SDM transmission, the DCI message includes first information and second information, where the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a first TPMI corresponding to the first SRI and a second TPMI corresponding to the second SRI.

[0162] In some embodiments, if 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, for 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 PUSCH transmission: 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., to be the maximum supported number of SRS ports or the maximum supported uplink layer 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 codebookSubset value from among a first codebookSubset value associated with the first TPMI, a second codebookSubset value associated with the second TPMI, and a third codebookSubset value associated with both the first and second TPMIs may be configured for the PUSCH transmission. The first, second, and third codebookSubset values ​​are determined based on UE capabilities, for example, 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. 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 from 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 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 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. 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 a 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 first information and 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 larger number of SRS ports. Alternatively, the third SRS resource set and the third SRI correspond to an SRS resource set having a larger number of SRS ports.

[0170] 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 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 UE capabilities, for example, to be the maximum supported number of SRS ports or the maximum supported uplink layer for both the first and second panels 225.

[0172] In some embodiments, when the transmission mode is CJT or when the DCI message includes one TPMI (e.g., the third TPMI) and one SRI (e.g., the third SRI), the codebookSubset value configured for the PUSCH transmission may be the fourth codebookSubset value associated with the third TPMI. The fourth codebookSubset value is determined based on the UE capabilities, for example, 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 a fifth fullpowermode value and a sixth fullpowermode value associated with the third TPMI may be configured for PUSCH transmission. The fifth fullpowermode value is determined based on UE capabilities, e.g., to be a full power mode within each panel 225. 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, or a port-level fullpowermode2. The sixth fullpowermode value may be one of a panel-level fullpowermode0, a panel-level fullpowermode1, or a panel-level fullpowermode2.

[0174] It should be understood that depending on the bit width of the associated field (i.e., 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 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 required. In other words, the SRS resource set (including 'usage' = 'codebook') may be dedicated for 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 constrained 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 first information and 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 the 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, The first port number corresponding to the 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; The determination is 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 measurements independently. In other words, the network device 210 may determine the number of first port groups and the number of second port groups based on the measured signal quality of each port of the terminal device 220. 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 indicates a first precoder applied to layers (0, ..., v1-1), and the second TPMI indicates 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, 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, and the second TPMI indicates a second precoder applied on at least one other layer, where the number of the at least one layer corresponds to the first codeword and the number of the at least one other layer corresponds to the second codeword.

[0186] In one particular exemplary embodiment, the first TPMI denotes a first precoder applied to layer (0, ..., v1-1), and the 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 first information and second information, where the first information includes a third SRI associated with the third SRS resource set, and the second information includes a first TPMI corresponding to the first port group of the third SRS resource set and a second TPMI corresponding to the second port group of the third SRS resource set.

[0188] The determination of the number of 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 indicates a first precoder applied to layers (0, ..., v1-1), and the second TPMI indicates 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, if 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, then the first TPMI is associated with the first port group (i.e., two ports) and the second TPMI is associated with the second port group (i.e., another two ports).

[0192] Additionally, in some embodiments, for 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).

[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 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 the maximum supported number of SRS ports or the maximum supported uplink layer 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 codebookSubset value from among a first codebookSubset value associated with the first TPMI, a second codebookSubset value associated with the second TPMI, and a third codebookSubset value associated with both the first and second TPMIs may be configured for the PUSCH transmission. The first, second, and third codebookSubset values ​​may be determined based on UE capabilities, for example, 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. 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 PUSCH transmission from 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 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. 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 the 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 PUSCH transmission may be the 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 number of SRS ports or the maximum supported UL layer for both the first and second panels 225.

[0199] In some embodiments, when the transmission mode is CJT or when the DCI message includes one TPMI (e.g., the third TPMI) and one SRI (e.g., the third SRI), the codebookSubset value configured for the PUSCH transmission may be the fourth codebookSubset value associated with the third TPMI. The fourth codebookSubset value is determined based on the UE capabilities, for example, 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 of a fifth fullpowermode value and a sixth fullpowermode value associated with the third TPMI may be configured for PUSCH transmission. The fifth fullpowermode value may be determined based on UE capabilities, e.g., to be a full power mode within each panel. The sixth fullpowermode value may be determined based on UE capabilities, 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, or a port-level fullpowermode2. The sixth fullpowermode value may be one of a panel-level fullpowermode0, a panel-level fullpowermode1, or a panel-level fullpowermode2.

[0201] It should be understood that depending on the bit width of the associated field (i.e., 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') dedicated for PUSCHSTxMP.

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

[0204] Additionally, in some embodiments, it is possible to determine the number of layers and precoders for 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 light 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 a specific example embodiment, for a terminal device with two two-port panels, one or both can be used for uplink transmission to the two TRPs. In this example, a first SRS set corresponds to the first panel 225-1, and a second SRS set corresponds to the second panel 225-2. In this specific example, multiple two-port SRS transmissions can be performed, thereby determining a four-port TPMI (particularly in the case of CJT STxMP mode). Furthermore, in this specific example, 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, e.g., 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 numbers 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 the first rank obtained with the first SRS resource set and the 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 the first SRI, and the second TPMI indicates a second precoder applied to layers (v1, ..., v-1) corresponding to the 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 the 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 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, if the third information indicates that the uplink transmission is an NCJT transmission, the DCI message includes first information and second information, where the first information includes a first SRI associated with 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, for 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).

[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 PUSCH transmission: 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 layer for the first panel 225-1, the second panel 225-2, and both the first and second panels 225, respectively.

[0218] In some embodiments, when the transmission mode is NCJT or SDM, or when the DCI message includes two TPMIs (e.g., a first TPMI and a second TPMI) and two SRIs (e.g., a first SRI and a second SRI), at least one codebookSubset value from among a first codebookSubset value associated with the first TPMI, a second codebookSubset value associated with the second TPMI, and a third codebookSubset value associated with both the first and second TPMIs may be configured for the PUSCH transmission. The first, first, and third codebookSubset values ​​may be determined based on UE capabilities, for example, 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 PUSCH transmission from 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 aggregate rank may be obtained by network device 210 through joint measurement of multiple SRS resources (e.g., first and second SRS resource sets). Thus, in some embodiments, if the third information indicates that the uplink transmission is a CJT transmission, the DCI message includes first information and second information, where the first information includes a first SRI associated with the first SRS resource set and a second SRI associated with the second SRS resource set, and the second information includes a 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, when the transmission mode is CJT or when 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 configured for PUSCH transmission may be the fourth maxRank value associated with the fourth TPMI. In some embodiments, when the transmission mode is CJT or when the DCI message includes two SRIs (e.g., 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 configured for PUSCH transmission. The fourth maxRank value is determined based on UE capabilities, for example, to be the maximum supported number of SRS ports or the maximum supported UL layer for both panels. Alternatively, in some embodiments, when the transmission mode is CJT, fifth and sixth maxRank values ​​associated with the fifth and sixth TPMIs, respectively, may be configured for 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 UE capabilities, for example, 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 UE capabilities, for example, 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 of a fifth fullpowermode value and a sixth fullpowermode value associated with the fourth TPMI or 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 within 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, or a port-level fullpowermode2. The sixth fullpowermode value may be one of a panel-level fullpowermode0, a panel-level fullpowermode1, or a panel-level fullpowermode2.

[0225]

[0226] It should be understood that depending on the bit width of the associated field (i.e., 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 PUSCH transmission.

[0228] Specifically, terminal device 220 transmits full power transmission capability information to 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, terminal device 220 receives a configuration (e.g., a DCI message) for uplink transmission from network device 210, where the configuration indicates a TPMI or a combination of TPMIs. Based on the full power transmission capability information and the indicated TPMI or combination of TPMIs, 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, 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. Specifically, the first scaling factor s' is 1 or a first ratio, and depends 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, and depends on the port-level full power mode configured and supported by the UE.

[0233] In some embodiments, the first scaling factor is: Panel-level full power transmission capability, The TPMI or combination of TPMIs configured for uplink transmission, the number of panels used for uplink transmission, the number of activated panels of the terminal 220; The number of panels corresponding to the TMPT or TPMI combination, or The 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; The TPMI or combination of TPMIs configured for uplink transmission, The number of ports in the panel that are used for uplink transmission, the number of activated ports in the panel, The 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 the 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 multiple panels, i.e., the sum

number

[0239] For a better understanding, please refer to Fig. 6, which shows an example 600 of controlling transmission power. In the specific example of Fig. 6, the maximum transmission power is 23 dBm, and a four-port, one-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 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 having 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 the 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, and s is the ratio of the number of antenna ports with non-zero PUSCH transmit power to the number of SRS ports for the remaining TPMIs, and 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 resource indicated by the SRS field in the DCI format scheduling the 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 resource 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, and an SRS resource with a single port is indicated by the SRS field in the 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 PUSCH-Config is set to full power;

[0241] Also, if 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 with non-zero PUSCH transmit power to the maximum number of SRS ports supported by the terminal device 220 within 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 , terminal device 220 receives transmission information from network device 210 (370). Specifically, the transmission information includes first waveform information and second waveform information, where the first waveform information is used by terminal device 220 to perform uplink transmission, and the second waveform information is used by terminal device 220 when performing the most recent 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 terminal device 220 to perform uplink transmission. Then, 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 explicitly indicated: specifically, 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 waveform or the 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 a change of waveform.

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

[0248] Additionally, dynamic switching of uplink waveforms is only applicable to some specific scenarios, such as scenarios where at least one indicated TPMI / TPMI combination satisfies the condition that it 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). Tables 2 and 3 below show two examples of 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 precoding information are indicated by the DCI message, the terminal device 220 determines the TPMI or a combination of TPMIs based on the first waveform information and precoding information indicated by the DCI message. Figure 7 shows timing 700 for determining the TPMI or a combination of TPMIs based on the first waveform information and precoding information indicated by the DCI message.

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

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

[0252] In addition to explicit indication, the first waveform information may be implicitly indicated. Specifically, in some embodiments, the first waveform information is indicated by an SRS resource having a first preset correspondence to a specific waveform. As one specific 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 indicates 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 specific 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 enabled transform precoding and the second SRS resource set corresponds to disabled transform precoding. 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 waveform switching, the precoding information is not associated with a TPMI index 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 indicated with dynamic waveform switching (e.g., a TPMI having any index of {12, 14, 17, 19, 20, 22, 25, 27}).

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

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

[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 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.

[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 plurality of antenna port sets includes a first antenna port set corresponding to a first panel or a first capability set of terminal device 220 and a second antenna port set corresponding to a second panel or a second capability set of terminal device 220. Further, the at least one uplink transmission is a CB-based PUSCH and is performed over a plurality of 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 the total number of layers of the first and second precoders is equal to the 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 the 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 the 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 first port groups and the number of 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, the 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. Specifically, simultaneous use of resources included in the first and second 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 the sum of the numbers 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 second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and 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 panel-level coherence capability, a second coherence type indicating port-level coherence capability within the panel, a first full power mode indicating panel-level full power capability, or a second full power mode indicating port-level full power capability within the panel.

[0276] In some embodiments, terminal device 220 receives an SRS configuration that is generated based on the transmit 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 supplied when all panels of the terminal device 220 are used for the at least one uplink transmission, or a third panel-level full power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission or when at least one specific TPMI or 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 such as those shown in FIGS.

[0281] In block 1110, the terminal device 220 transmits full power transmission capability information to the network, where the full power transmission capability information indicates a panel-level full power transmission capability and a port-level full power transmission 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] In block 1130, terminal device 220 controls the 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, terminal device 220 scales transmit power using a first scaling factor calculated at least in part based on panel-level full power transmit capability and a second scaling factor calculated at least in part based on 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 the following: 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, the TPMI or combination of TPMIs configured for the at least one uplink transmission, the number of ports in the panel used for the at least one uplink transmission, the number of activated ports in the panel, the number of ports corresponding to the TPMI or combination of TPMIs, or the total number of ports in the panel.

[0287] 12 is a flowchart of an exemplary method 1200 according to some embodiments of the present disclosure. For example, the method 1200 may be implemented in a terminal device 220 such as those 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 the 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 a combination of TPMIs based on the transmitted information.

[0290] In some embodiments, the first waveform information is one of a first indication indicating whether the first waveform or the second waveform is enabled, a second indication indicating whether to switch the currently applied waveform, or information about a panel or capability value 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 TPMIs includes one of determining the TPMI or combination of TPMIs based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or combination of TPMIs 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 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 when performing the latest SRS.

[0293] In some embodiments, the first waveform information is indicated by an SRS resource having a first preset correspondence to a particular waveform, or an SRS resource set having a second preset correspondence to a particular waveform.

[0294] In some embodiments, if 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.

[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 shown in FIGS. 2A-2C.

[0297] At block 1310, network device 210 transmits a DCI message to 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, wherein the DCI message indicates 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, based on the DCI message, the at least one uplink transmission from terminal device 220 transmitted via the at least two of the plurality of antenna port sets.

[0299] In some embodiments, the plurality of antenna port sets includes a first antenna port set corresponding to a first panel or a first capability set of terminal device 220 and a second antenna port set corresponding to a second panel or a second capability set of terminal device 220. Further, the at least one uplink transmission is a CB-based PUSCH and is performed over a plurality of 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 the total number of layers of the first and second precoders is equal to the 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 the 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 the 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 capability value sets 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 first port groups and the number of 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 the terminal device 220, and the measured signal quality of each port of the terminal device 220.

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

[0311] In some embodiments, 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. Furthermore, simultaneous use of resources included in the first and second 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 the sum of the numbers 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 second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and second SRI.

[0314] In some embodiments, network device 210 receives transmission capability information from 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 panel-level coherence capability, a second coherence type indicating port-level coherence capability within a panel, a first full power mode indicating panel-level full power capability, or a second full power mode indicating port-level full power capability within a panel.

[0315] In some embodiments, 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 supplied when all panels of the terminal device 220 are used for the at least one uplink transmission, or a third panel-level full power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission or when at least one specific TPMI or 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 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 the latest SRS transmission, and precoding information used by the terminal device 220 to perform at least one uplink transmission.

[0321] In block 1420, the network device 210 determines 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 indicating whether the first waveform or the second waveform is enabled, a second indication indicating whether to switch the currently applied waveform, or information about a panel or capability value 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 the combination of TPMIs includes one of determining the TPMI or the combination of TPMIs based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or the combination of TPMIs 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 preset correspondence to a particular waveform, or an SRS resource set having a second preset correspondence to a particular waveform.

[0326] In some embodiments, if 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.

[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}. Device 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 over 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 over the at least two of the plurality of antenna port sets based on the DCI message.

[0329] In some embodiments, the plurality of antenna port sets includes a first antenna port set corresponding to a first panel or a first capability set of terminal device 220 and a second antenna port set corresponding to a second panel or a second capability set of terminal device 220. Further, the at least one uplink transmission is a CB-based PUSCH and is performed over a plurality of 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 the terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220, and a third SRS resource set associated with both the first and second panels or both the first and second capability value sets of the terminal device 220.

[0331] In some embodiments, 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 the total number of layers of the first and second precoders is equal to the 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 the 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 the 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 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.

[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 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. Specifically, simultaneous use of resources included in the first and second 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 the sum of the numbers 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 second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and 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 transmit 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 supplied when all panels of the terminal device 220 are used for the at least one uplink transmission, or a third panel-level full power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission or when at least one specific TPMI or 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 demonstrative 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 from the network a configuration indicating a TPMI or combination of TPMIs for at least one uplink transmission, and control 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.

[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 the following: 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, the TPMI or combination of TPMIs configured for the at least one uplink transmission, the number of ports in the panel used for the at least one uplink transmission, the number of activated ports in the panel, the number of ports corresponding to the TPMI or combination of TPMIs, or the total number of ports in the panel.

[0353] In some exemplary embodiments, terminal device 220 comprises circuitry configured to receive transmission information from network device 210, the transmission information including first waveform information used by 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 terminal device 220 when performing a most recent SRS transmission, and precoding information used by 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 indicating whether the first waveform or the second waveform is enabled, a second indication indicating whether to switch the currently applied waveform, or information about a panel or capability value 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 TPMIs includes one of determining the TPMI or combination of TPMIs based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or combination of TPMIs 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 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 when performing the latest SRS.

[0357] In some embodiments, the first waveform information is indicated by an SRS resource having a first preset correspondence to a particular waveform, or an SRS resource set having a second preset correspondence to a particular waveform.

[0358] In some embodiments, if 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.

[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 demonstrative embodiments, network device 210 comprises circuitry configured to: send a DCI message to 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; and receive from terminal device 220 the at least one uplink transmission transmitted over the at least two of the multiple antenna port sets based on the DCI message.

[0361] In some embodiments, the plurality of antenna port sets includes a first antenna port set corresponding to a first panel or a first capability set of terminal device 220 and a second antenna port set corresponding to a second panel or a second capability set of terminal device 220. Further, the at least one uplink transmission is a CB-based PUSCH and is performed over a plurality of 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 the terminal device 220, a second SRS resource set associated with a second panel or a second capability value set of the terminal device 220, and a third SRS resource set associated with both the first and second panels or both the first and second capability value sets of the terminal device 220.

[0363] In some embodiments, 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 the total number of layers of the first and second precoders is equal to the 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 the 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 the 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 first port groups and the number of 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 the terminal device 220, and the measured signal quality of each port of the terminal device 220.

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

[0373] In some embodiments, the 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 value set of terminal device 220 and a second SRS resource set associated with a second panel or a second capability value 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 the sum of the numbers 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 second SRI, or a fifth TPMI and a sixth TPMI jointly associated with the first SRI and 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 panel-level coherence capability, a second coherence type indicating port-level coherence capability within a panel, a first full power mode indicating panel-level full power capability, or a second full power mode indicating port-level full power capability within a panel.

[0377] In some embodiments, the circuitry is further configured to generate an SRS configuration based on the transmission capability information and 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 supplied when all panels of the terminal device 220 are used for the at least one uplink transmission, or a third panel-level full power mode indicating that the full power is possible when all panels of the terminal device 220 are used for the at least one uplink transmission or when at least one specific TPMI or 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, network device 210 comprises circuitry configured to receive transmission information from terminal device 220, the transmission information being used by terminal device 220 to perform at least one uplink transmission, the transmission information including first waveform information included in a DCI message or a MAC CE message, second waveform information used by terminal device 220 when performing a most recent SRS transmission, and precoding information used by 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 indicating whether the first waveform or the second waveform is enabled, a second indication indicating whether to switch the currently applied waveform, or information about a panel or capability value 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 the combination of TPMIs includes one of determining the TPMI or the combination of TPMIs based on the first waveform information and the precoding information indicated by the DCI message, or determining the TPMI or the combination of TPMIs 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 preset correspondence to a particular waveform, or an SRS resource set having a second preset correspondence to a particular waveform.

[0386] In some embodiments, if 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.

[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 embodiments of the present disclosure. The apparatus 1500 can be considered as another exemplary implementation of the terminal device 220 and the network devices 210-1 and 210-2 shown in FIGS. 2A-2C. Accordingly, the apparatus 1500 may be implemented in, or as at least a part of, the terminal device 220 and the network devices 210-1 and 210-2.

[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 actually 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 a 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 herein may be implemented by computer software executable by the processor 1510 of the device 1500, by hardware, or by a combination of software and hardware. The processor 1510 may be configured to implement various embodiments of the present disclosure. Furthermore, 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] Memory 1520 may be of any type suitable for a local technology network and may be implemented using any suitable data storage technology, including, 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. While only one memory 1520 is shown in device 1500, there may be several physically distinct memory modules within device 1500. 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. 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 executable by a controller, microprocessor, or other computing device. While various aspects of embodiments of the present disclosure have been illustrated and described using block diagrams, flowcharts, or 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 example, 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 program modules, that execute in a device on a target real or virtual processor to perform the processes or methods described above with reference to FIGS. 3 through 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 desired. The machine-executable instructions of the program modules may be executed in local or distributed devices. In a distributed device, program modules may be located in both local and remote storage media.

[0394] Program code 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, cause the program code to implement the functions / acts specified in the flowcharts and / or block diagrams. 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-described program code may be embodied 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, apparatus, or device. 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, apparatus, or device, or any suitable combination of the aforementioned media. More specific examples of a 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 above.

[0396] It should be noted that, although operations have been described in a particular order, it should not be understood that performing such operations in the particular order shown, or in any sequential order, or performing all of the operations described, is required to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Similarly, while several 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 particular embodiments. Some features that are described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately 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. means for receiving downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, a first transmit precoding matrix indication (TPMI), and a second TPMI; means for sending an uplink transmission to a network device based on the downlink control information; When a first transmission mode of simultaneous uplink transmission of multiple panels is configured via a radio resource control (RRC) message, the first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate a second precoder applied on at least one layer {v1...v-1} of the uplink transmission corresponding to the second SRI, where v1 is the first layer number indicated by the first TPMI, v-v1 is equal to the second layer number indicated by the second TPMI, and v is the layer number of one codeword of the uplink transmission; When a second transmission mode of simultaneous uplink transmission of multiple panels is configured via the RRC message, the first TPMI is used to indicate the first precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate the second precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the second SRI. Terminal device.

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

3. In the first transmission mode, different layers of the uplink transmission are transmitted separately to two transmit and receive points (TRPs); In the second transmission mode, the same layer of the uplink transmission is transmitted to the two TRPs. The terminal device according to claim 1 .

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

5. The maximum number of layers parameter is set corresponding to different transmission modes, The same value of the parameter is associated with the first TPMI and the second TPMI. The terminal device according to claim 1 .

6. Transmission capability information associated with the first transmission mode or the second transmission mode is transmitted to the network device. The terminal device according to claim 1 .

7. means for transmitting downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, a first transmit precoding matrix indication (TPMI), and a second TPMI; means for receiving, from a terminal device, an uplink transmission associated with the downlink control information; When a first transmission mode of simultaneous uplink transmission of multiple panels is configured via a radio resource control (RRC) message, the first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate a second precoder applied on at least one layer {v1...v-1} of the uplink transmission corresponding to the second SRI, where v1 is the first layer number indicated by the first TPMI, v-v1 is equal to the second layer number indicated by the second TPMI, and v is the layer number of one codeword of the uplink transmission; When a second transmission mode of simultaneous uplink transmission of multiple panels is configured via the RRC message, the first TPMI is used to indicate the first precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate the second precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the second SRI. Network equipment.

8. The first precoder indicated by the first TPMI and the second precoder indicated by the second TPMI correspond to different antenna ports. The network device according to claim 7.

9. For the first transmission mode, different layers of the uplink transmission are transmitted separately to two transmit and receive points (TRPs); For the second transmission mode, the same layer of the uplink transmission is transmitted to the two TRPs. The network device according to claim 7.

10. The first SRI and the first TPMI are associated with a first sounding reference signal (SRS) resource set, and the second SRI and the second TPMI are associated with a second SRS resource set. The network device according to claim 7.

11. The maximum number of layers parameter is set corresponding to different transmission modes, The same value of the parameter is associated with the first TPMI and the second TPMI. The network device according to claim 7.

12. The transmission capability information associated with the first transmission mode or the second transmission mode is received from the terminal device. The network device according to claim 7.

13. 1. A method performed by a terminal device, comprising: receiving downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, a first transmit precoding matrix indication (TPMI), and a second TPMI; sending an uplink transmission to a network device based on the downlink control information; When a first transmission mode of simultaneous uplink transmission of multiple panels is configured via a radio resource control (RRC) message, the first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate a second precoder applied on at least one layer {v1...v-1} of the uplink transmission corresponding to the second SRI, where v1 is the first layer number indicated by the first TPMI, v-v1 is equal to the second layer number indicated by the second TPMI, and v is the layer number of one codeword of the uplink transmission; When a second transmission mode of simultaneous uplink transmission of multiple panels is configured via the RRC message, the first TPMI is used to indicate the first precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate the second precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the second SRI. method.

14. 1. A method performed by a network device, comprising: transmitting downlink control information including a first sounding reference signal resource indicator (SRI), a second SRI, a first transmit precoding matrix indication (TPMI), and the second TPMI; receiving, from a terminal device, an uplink transmission associated with the downlink control information; When a first transmission mode of simultaneous uplink transmission of multiple panels is configured via a radio resource control (RRC) message, the first TPMI is used to indicate a first precoder applied on at least one layer {0...v1-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate a second precoder applied on at least one layer {v1...v-1} of the uplink transmission corresponding to the second SRI, where v1 is the first layer number indicated by the first TPMI, v-v1 is equal to the second layer number indicated by the second TPMI, and v is the layer number of one codeword of the uplink transmission; When a second transmission mode of simultaneous uplink transmission of multiple panels is configured via the RRC message, the first TPMI is used to indicate the first precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the first SRI, and the second TPMI is used to indicate the second precoder applied on at least one layer {0...v-1} of the uplink transmission corresponding to the second SRI. method.

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